/*-------------------------------------------------------------------------
- SDCCgen51.c - source file for code generation for 8051
+ gen.c - source file for code generation for 8051
Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
and - Jean-Louis VERN.jlvern@writeme.com (1999)
#include "gen.h"
char *aopLiteral (value * val, int offset);
+char *aopLiteralLong (value * val, int offset, int size);
extern int allocInfo;
/* this is the down and dirty file with all kinds of
char *fReturn8051[] =
{"dpl", "dph", "b", "a"};
-unsigned fReturnSizeMCS51 = 4; /* shared with ralloc.c */
+unsigned fReturnSizeMCS51 = 4; /* shared with ralloc.c */
char **fReturn = fReturn8051;
static char *accUse[] =
{"a", "b"};
static unsigned short rbank = -1;
+#define REG_WITH_INDEX mcs51_regWithIdx
+
+#define AOP(op) op->aop
+#define AOP_TYPE(op) AOP(op)->type
+#define AOP_SIZE(op) AOP(op)->size
+#define IS_AOP_PREG(x) (AOP(x) && (AOP_TYPE(x) == AOP_R1 || \
+ AOP_TYPE(x) == AOP_R0))
+
+#define AOP_NEEDSACC(x) (AOP(x) && (AOP_TYPE(x) == AOP_CRY || \
+ AOP_TYPE(x) == AOP_DPTR || \
+ AOP(x)->paged))
+
+#define AOP_INPREG(x) (x && (x->type == AOP_REG && \
+ (x->aopu.aop_reg[0] == REG_WITH_INDEX(R0_IDX) || \
+ x->aopu.aop_reg[0] == REG_WITH_INDEX(R1_IDX) )))
+
+#define SYM_BP(sym) (SPEC_OCLS (sym->etype)->paged ? "_bpx" : "_bp")
+
+#define R0INB _G.bu.bs.r0InB
+#define R1INB _G.bu.bs.r1InB
+#define OPINB _G.bu.bs.OpInB
+#define BINUSE _G.bu.BInUse
+
static struct
{
short r0Pushed;
short r1Pushed;
+ union
+ {
+ struct
+ {
+ short r0InB : 2;//2 so we can see it overflow
+ short r1InB : 2;//2 so we can see it overflow
+ short OpInB : 2;//2 so we can see it overflow
+ } bs;
+ short BInUse;
+ } bu;
short accInUse;
short inLine;
short debugLine;
short nRegsSaved;
set *sendSet;
iCode *current_iCode;
+ symbol *currentFunc;
}
_G;
static char *rb1regs[] = {
- "b1_0","b1_1","b1_2","b1_3","b1_4","b1_5","b1_6","b1_7"
+ "b1_0","b1_1","b1_2","b1_3","b1_4","b1_5","b1_6","b1_7",
+ "b0", "b1", "b2", "b3", "b4", "b5", "b6", "b7"
};
-extern int mcs51_ptrRegReq;
-extern int mcs51_nRegs;
extern FILE *codeOutFile;
static void saveRBank (int, iCode *, bool);
+
#define RESULTONSTACK(x) \
(IC_RESULT(x) && IC_RESULT(x)->aop && \
IC_RESULT(x)->aop->type == AOP_STK )
-#define MOVA(x) mova(x) /* use function to avoid multiple eval */
-#define CLRC emitcode("clr","c")
-#define SETC emitcode("setb","c")
+#define MOVA(x) mova(x) /* use function to avoid multiple eval */
+#define MOVB(x) movb(x)
+
+#define CLRC emitcode("clr","c")
+#define SETC emitcode("setb","c")
static lineNode *lineHead = NULL;
static lineNode *lineCurr = NULL;
if (inst && *inst)
{
if (fmt && *fmt)
- sprintf (lb, "%s\t", inst);
+ {
+ SNPRINTF (lb, sizeof(lb), "%s\t", inst);
+ }
else
- sprintf (lb, "%s", inst);
- vsprintf (lb + (strlen (lb)), fmt, ap);
+ {
+ SNPRINTF (lb, sizeof(lb), "%s", inst);
+ }
+
+ tvsprintf (lb + strlen(lb), sizeof(lb) - strlen(lb), fmt, ap);
}
else
- vsprintf (lb, fmt, ap);
+ {
+ tvsprintf (lb, sizeof(lb), fmt, ap);
+ }
- while (isspace (*lbp))
- lbp++;
+ while (isspace ((unsigned char)*lbp))
+ {
+ lbp++;
+ }
if (lbp && *lbp)
- lineCurr = (lineCurr ?
- connectLine (lineCurr, newLineNode (lb)) :
- (lineHead = newLineNode (lb)));
+ {
+ lineCurr = (lineCurr ?
+ connectLine (lineCurr, newLineNode (lb)) :
+ (lineHead = newLineNode (lb)));
+ }
+
lineCurr->isInline = _G.inLine;
lineCurr->isDebug = _G.debugLine;
lineCurr->ic = _G.current_iCode;
va_end (ap);
}
+static void
+emitLabel (symbol *tlbl)
+{
+ emitcode ("", "%05d$:", tlbl->key + 100);
+}
+
+/*-----------------------------------------------------------------*/
+/* mcs51_emitDebuggerSymbol - associate the current code location */
+/* with a debugger symbol */
+/*-----------------------------------------------------------------*/
+void
+mcs51_emitDebuggerSymbol (char * debugSym)
+{
+ _G.debugLine = 1;
+ emitcode ("", "%s ==.", debugSym);
+ _G.debugLine = 0;
+}
+
/*-----------------------------------------------------------------*/
/* mova - moves specified value into accumulator */
/*-----------------------------------------------------------------*/
mova (const char *x)
{
/* do some early peephole optimization */
- if (!strcmp(x, "a") || !strcmp(x, "acc"))
+ if (!strncmp(x, "a", 2) || !strncmp(x, "acc", 4))
+ return;
+
+ emitcode("mov", "a,%s", x);
+}
+
+/*-----------------------------------------------------------------*/
+/* movb - moves specified value into register b */
+/*-----------------------------------------------------------------*/
+static void
+movb (const char *x)
+{
+ /* do some early peephole optimization */
+ if (!strncmp(x, "b", 2))
return;
- emitcode("mov","a,%s", x);
+ emitcode("mov","b,%s", x);
+}
+
+/*-----------------------------------------------------------------*/
+/* movc - moves specified value into the carry */
+/*-----------------------------------------------------------------*/
+static void
+movc (const char *s)
+{
+ if (s == zero)
+ CLRC;
+ else if (s == one)
+ SETC;
+ else if (strcmp (s, "c"))
+ {/* it's not in carry already */
+ MOVA (s);
+ /* set C, if a >= 1 */
+ emitcode ("add", "a,#0xff");
+ }
+}
+
+/*-----------------------------------------------------------------*/
+/* pushB - saves register B if necessary */
+/*-----------------------------------------------------------------*/
+static bool
+pushB (void)
+{
+ bool pushedB = FALSE;
+
+ if (BINUSE)
+ {
+ emitcode ("push", "b");
+// printf("B was in use !\n");
+ pushedB = TRUE;
+ }
+ else
+ {
+ OPINB++;
+ }
+ return pushedB;
+}
+
+/*-----------------------------------------------------------------*/
+/* popB - restores value of register B if necessary */
+/*-----------------------------------------------------------------*/
+static void
+popB (bool pushedB)
+{
+ if (pushedB)
+ {
+ emitcode ("pop", "b");
+ }
+ else
+ {
+ OPINB--;
+ }
+}
+
+/*-----------------------------------------------------------------*/
+/* pushReg - saves register */
+/*-----------------------------------------------------------------*/
+static bool
+pushReg (int index, bool bits_pushed)
+{
+ regs * reg = REG_WITH_INDEX (index);
+ if (reg->type == REG_BIT)
+ {
+ if (!bits_pushed)
+ emitcode ("push", "%s", reg->base);
+ return TRUE;
+ }
+ else
+ emitcode ("push", "%s", reg->dname);
+ return bits_pushed;
+}
+
+/*-----------------------------------------------------------------*/
+/* popReg - restores register */
+/*-----------------------------------------------------------------*/
+static bool
+popReg (int index, bool bits_popped)
+{
+ regs * reg = REG_WITH_INDEX (index);
+ if (reg->type == REG_BIT)
+ {
+ if (!bits_popped)
+ emitcode ("pop", "%s", reg->base);
+ return TRUE;
+ }
+ else
+ emitcode ("pop", "%s", reg->dname);
+ return bits_popped;
}
/*-----------------------------------------------------------------*/
static regs *
getFreePtr (iCode * ic, asmop ** aopp, bool result)
{
- bool r0iu = FALSE, r1iu = FALSE;
- bool r0ou = FALSE, r1ou = FALSE;
+ bool r0iu, r1iu;
+ bool r0ou, r1ou;
/* the logic: if r0 & r1 used in the instruction
then we are in trouble otherwise */
ic->rUsed = bitVectSetBit (ic->rUsed, R0_IDX);
(*aopp)->type = AOP_R0;
- return (*aopp)->aopu.aop_ptr = mcs51_regWithIdx (R0_IDX);
+ return (*aopp)->aopu.aop_ptr = REG_WITH_INDEX (R0_IDX);
}
/* if no usage of r1 then return it */
ic->rUsed = bitVectSetBit (ic->rUsed, R1_IDX);
(*aopp)->type = AOP_R1;
- return (*aopp)->aopu.aop_ptr = mcs51_regWithIdx (R1_IDX);
+ return (*aopp)->aopu.aop_ptr = REG_WITH_INDEX (R1_IDX);
}
/* now we know they both have usage */
if (!r0iu)
{
/* push it if not already pushed */
- if (!_G.r0Pushed)
- {
- emitcode ("push", "%s",
- mcs51_regWithIdx (R0_IDX)->dname);
- _G.r0Pushed++;
- }
+ if (ic->op == IPUSH)
+ {
+ MOVB (REG_WITH_INDEX (R0_IDX)->dname);
+ R0INB++;
+ }
+ else if (!_G.r0Pushed)
+ {
+ emitcode ("push", "%s",
+ REG_WITH_INDEX (R0_IDX)->dname);
+ _G.r0Pushed++;
+ }
ic->rUsed = bitVectSetBit (ic->rUsed, R0_IDX);
(*aopp)->type = AOP_R0;
- return (*aopp)->aopu.aop_ptr = mcs51_regWithIdx (R0_IDX);
+ return (*aopp)->aopu.aop_ptr = REG_WITH_INDEX (R0_IDX);
}
/* if r1 not used then */
if (!r1iu)
{
/* push it if not already pushed */
- if (!_G.r1Pushed)
- {
- emitcode ("push", "%s",
- mcs51_regWithIdx (R1_IDX)->dname);
- _G.r1Pushed++;
- }
+ if (ic->op == IPUSH)
+ {
+ MOVB (REG_WITH_INDEX (R1_IDX)->dname);
+ R1INB++;
+ }
+ else if (!_G.r1Pushed)
+ {
+ emitcode ("push", "%s",
+ REG_WITH_INDEX (R1_IDX)->dname);
+ _G.r1Pushed++;
+ }
ic->rUsed = bitVectSetBit (ic->rUsed, R1_IDX);
(*aopp)->type = AOP_R1;
- return mcs51_regWithIdx (R1_IDX);
+ return REG_WITH_INDEX (R1_IDX);
}
+
endOfWorld:
/* I said end of world, but not quite end of world yet */
- if (result) {
- /* we can push it on the stack */
- (*aopp)->type = AOP_STK;
- return NULL;
- } else {
- /* in the case that result AND left AND right needs a pointer reg
- we can safely use the result's */
- if (bitVectBitValue (mcs51_rUmaskForOp(IC_RESULT(ic)), R0_IDX)) {
+ /* if this is a result then we can push it on the stack */
+ if (result)
+ {
+ (*aopp)->type = AOP_STK;
+ return NULL;
+ }
+ /* in the case that result AND left AND right needs a pointer reg
+ we can safely use the result's */
+ if (bitVectBitValue (mcs51_rUmaskForOp(IC_RESULT(ic)), R0_IDX))
+ {
(*aopp)->type = AOP_R0;
- return mcs51_regWithIdx (R0_IDX);
+ return REG_WITH_INDEX (R0_IDX);
}
- if (bitVectBitValue (mcs51_rUmaskForOp(IC_RESULT(ic)), R1_IDX)) {
+ if (bitVectBitValue (mcs51_rUmaskForOp(IC_RESULT(ic)), R1_IDX))
+ {
(*aopp)->type = AOP_R1;
- return mcs51_regWithIdx (R1_IDX);
+ return REG_WITH_INDEX (R1_IDX);
}
- }
/* now this is REALLY the end of the world */
werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "getFreePtr should never reach here");
+ "getFreePtr should never reach here");
exit (1);
}
+
+/*-----------------------------------------------------------------*/
+/* getTempRegs - initialize an array of pointers to GPR registers */
+/* that are not in use. Returns 1 if the requested */
+/* number of registers were available, 0 otherwise. */
+/*-----------------------------------------------------------------*/
+int
+getTempRegs(regs **tempRegs, int size, iCode *ic)
+{
+ bitVect * freeRegs;
+ int i;
+ int offset;
+
+ if (!ic)
+ ic = _G.current_iCode;
+ if (!ic)
+ return 0;
+ if (!_G.currentFunc)
+ return 0;
+
+ freeRegs = newBitVect(8);
+ bitVectSetBit (freeRegs, R2_IDX);
+ bitVectSetBit (freeRegs, R3_IDX);
+ bitVectSetBit (freeRegs, R4_IDX);
+ bitVectSetBit (freeRegs, R5_IDX);
+ bitVectSetBit (freeRegs, R6_IDX);
+ bitVectSetBit (freeRegs, R7_IDX);
+
+ if (IFFUNC_CALLEESAVES(_G.currentFunc->type))
+ {
+ bitVect * newfreeRegs;
+ newfreeRegs = bitVectIntersect (freeRegs, _G.currentFunc->regsUsed);
+ freeBitVect(freeRegs);
+ freeRegs = newfreeRegs;
+ }
+ freeRegs = bitVectCplAnd (freeRegs, ic->rMask);
+
+ offset = 0;
+ for (i=0; i<freeRegs->size; i++)
+ {
+ if (bitVectBitValue(freeRegs,i))
+ tempRegs[offset++] = REG_WITH_INDEX(i);
+ if (offset>=size)
+ {
+ freeBitVect(freeRegs);
+ return 1;
+ }
+ }
+
+ freeBitVect(freeRegs);
+ return 0;
+}
+
+
/*-----------------------------------------------------------------*/
/* newAsmop - creates a new asmOp */
/*-----------------------------------------------------------------*/
aop = Safe_calloc (1, sizeof (asmop));
aop->type = type;
+ aop->allocated = 1;
return aop;
}
}
-
/*-----------------------------------------------------------------*/
/* leftRightUseAcc - returns size of accumulator use by operands */
/*-----------------------------------------------------------------*/
static int
leftRightUseAcc(iCode *ic)
{
+ operand *op;
+ int size;
+ int accuseSize = 0;
int accuse = 0;
- if (ic && IC_LEFT (ic) && IS_SYMOP (IC_LEFT (ic))
- && OP_SYMBOL (IC_LEFT (ic)) && OP_SYMBOL (IC_LEFT (ic))->accuse)
- accuse = (accuse < OP_SYMBOL (IC_LEFT (ic))->nRegs)
- ? OP_SYMBOL (IC_LEFT (ic))->nRegs : accuse;
+ if (!ic)
+ {
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "null iCode pointer");
+ return 0;
+ }
- if (ic && IC_RIGHT (ic) && IS_SYMOP (IC_RIGHT (ic))
- && OP_SYMBOL (IC_RIGHT (ic)) && OP_SYMBOL (IC_RIGHT (ic))->accuse)
- accuse = (accuse < OP_SYMBOL (IC_RIGHT (ic))->nRegs)
- ? OP_SYMBOL (IC_RIGHT (ic))->nRegs : accuse;
+ if (ic->op == IFX)
+ {
+ op = IC_COND (ic);
+ if (IS_SYMOP (op) && OP_SYMBOL (op) && OP_SYMBOL (op)->accuse)
+ {
+ accuse = 1;
+ size = getSize (OP_SYMBOL (op)->type);
+ if (size>accuseSize)
+ accuseSize = size;
+ }
+ }
+ else if (ic->op == JUMPTABLE)
+ {
+ op = IC_JTCOND (ic);
+ if (IS_SYMOP (op) && OP_SYMBOL (op) && OP_SYMBOL (op)->accuse)
+ {
+ accuse = 1;
+ size = getSize (OP_SYMBOL (op)->type);
+ if (size>accuseSize)
+ accuseSize = size;
+ }
+ }
+ else
+ {
+ op = IC_LEFT (ic);
+ if (IS_SYMOP (op) && OP_SYMBOL (op) && OP_SYMBOL (op)->accuse)
+ {
+ accuse = 1;
+ size = getSize (OP_SYMBOL (op)->type);
+ if (size>accuseSize)
+ accuseSize = size;
+ }
+ op = IC_RIGHT (ic);
+ if (IS_SYMOP (op) && OP_SYMBOL (op) && OP_SYMBOL (op)->accuse)
+ {
+ accuse = 1;
+ size = getSize (OP_SYMBOL (op)->type);
+ if (size>accuseSize)
+ accuseSize = size;
+ }
+ }
- return accuse;
+ if (accuseSize)
+ return accuseSize;
+ else
+ return accuse;
}
-
/*-----------------------------------------------------------------*/
/* aopForSym - for a true symbol */
/*-----------------------------------------------------------------*/
{
asmop *aop;
memmap *space;
+ bool accuse = leftRightUseAcc (ic) || _G.accInUse;
wassertl (ic != NULL, "Got a null iCode");
wassertl (sym != NULL, "Got a null symbol");
/* if already has one */
if (sym->aop)
- return sym->aop;
+ {
+ sym->aop->allocated++;
+ return sym->aop;
+ }
/* assign depending on the storage class */
/* if it is on the stack or indirectly addressable */
/* now assign the address of the variable to
the pointer register */
if (aop->type != AOP_STK)
- {
-
- if (sym->onStack)
- {
- if (_G.accInUse || leftRightUseAcc (ic))
- emitcode ("push", "acc");
-
- emitcode ("mov", "a,_bp");
- emitcode ("add", "a,#0x%02x",
- ((sym->stack < 0) ?
- ((char) (sym->stack - _G.nRegsSaved)) :
- ((char) sym->stack)) & 0xff);
- emitcode ("mov", "%s,a",
- aop->aopu.aop_ptr->name);
-
- if (_G.accInUse || leftRightUseAcc (ic))
- emitcode ("pop", "acc");
- }
- else
- emitcode ("mov", "%s,#%s",
- aop->aopu.aop_ptr->name,
- sym->rname);
- aop->paged = space->paged;
- }
+ {
+ if (sym->onStack)
+ {
+ signed char offset = ((sym->stack < 0) ?
+ ((signed char) (sym->stack - _G.nRegsSaved)) :
+ ((signed char) sym->stack)) & 0xff;
+
+ if ((abs(offset) <= 3) ||
+ (accuse && (abs(offset) <= 7)))
+ {
+ emitcode ("mov", "%s,%s",
+ aop->aopu.aop_ptr->name, SYM_BP (sym));
+ while (offset < 0)
+ {
+ emitcode ("dec", aop->aopu.aop_ptr->name);
+ offset++;
+ }
+ while (offset > 0)
+ {
+ emitcode ("inc", aop->aopu.aop_ptr->name);
+ offset--;
+ }
+ }
+ else
+ {
+ if (accuse)
+ emitcode ("push", "acc");
+ emitcode ("mov", "a,%s", SYM_BP (sym));
+ emitcode ("add", "a,#0x%02x", offset);
+ emitcode ("mov", "%s,a", aop->aopu.aop_ptr->name);
+ if (accuse)
+ emitcode ("pop", "acc");
+ }
+ }
+ else
+ {
+ emitcode ("mov", "%s,#%s",
+ aop->aopu.aop_ptr->name,
+ sym->rname);
+ }
+ aop->paged = space->paged;
+ }
else
- aop->aopu.aop_stk = sym->stack;
+ aop->aopu.aop_stk = sym->stack;
return aop;
}
/* if it is in direct space */
if (IN_DIRSPACE (space))
{
+ //printf("aopForSym, using AOP_DIR for %s (%x)\n", sym->name, sym);
+ //printTypeChainRaw(sym->type, NULL);
+ //printf("space = %s\n", space ? space->sname : "NULL");
sym->aop = aop = newAsmop (AOP_DIR);
aop->aopu.aop_dir = sym->rname;
aop->size = getSize (sym->type);
if (IS_FUNC (sym->type))
{
sym->aop = aop = newAsmop (AOP_IMMD);
- aop->aopu.aop_immd.aop_immd1 = Safe_calloc (1, strlen (sym->rname) + 1);
- strcpy (aop->aopu.aop_immd.aop_immd1, sym->rname);
- aop->size = FPTRSIZE;
+ aop->aopu.aop_immd.aop_immd1 = Safe_strdup(sym->rname);
+ aop->size = getSize (sym->type);
return aop;
}
{
iCode *ic = sym->rematiCode;
asmop *aop = newAsmop (AOP_IMMD);
- int ptr_type=0;
+ int ptr_type = 0;
int val = 0;
for (;;)
{
if (ic->op == '+')
- val += (int) operandLitValue (IC_RIGHT (ic));
+ val += (int) operandLitValue (IC_RIGHT (ic));
else if (ic->op == '-')
- val -= (int) operandLitValue (IC_RIGHT (ic));
+ val -= (int) operandLitValue (IC_RIGHT (ic));
else if (IS_CAST_ICODE(ic)) {
- sym_link *from_type = operandType(IC_RIGHT(ic));
- aop->aopu.aop_immd.from_cast_remat = 1;
- ic = OP_SYMBOL (IC_RIGHT (ic))->rematiCode;
- ptr_type = DCL_TYPE(from_type);
- if (ptr_type == IPOINTER) {
- // bug #481053
- ptr_type = POINTER;
- }
- continue ;
+ sym_link *from_type = operandType(IC_RIGHT(ic));
+ aop->aopu.aop_immd.from_cast_remat = 1;
+ ic = OP_SYMBOL (IC_RIGHT (ic))->rematiCode;
+ ptr_type = pointerTypeToGPByte (DCL_TYPE(from_type), NULL, NULL);
+ continue;
} else break;
ic = OP_SYMBOL (IC_LEFT (ic))->rematiCode;
}
if (val)
- sprintf (buffer, "(%s %c 0x%04x)",
- OP_SYMBOL (IC_LEFT (ic))->rname,
- val >= 0 ? '+' : '-',
- abs (val) & 0xffff);
+ {
+ SNPRINTF (buffer, sizeof(buffer),
+ "(%s %c 0x%04x)",
+ OP_SYMBOL (IC_LEFT (ic))->rname,
+ val >= 0 ? '+' : '-',
+ abs (val) & 0xffff);
+ }
else
- strcpy (buffer, OP_SYMBOL (IC_LEFT (ic))->rname);
+ {
+ strncpyz (buffer, OP_SYMBOL (IC_LEFT (ic))->rname, sizeof(buffer));
+ }
- aop->aopu.aop_immd.aop_immd1 = Safe_calloc (1, strlen (buffer) + 1);
- strcpy (aop->aopu.aop_immd.aop_immd1, buffer);
+ aop->aopu.aop_immd.aop_immd1 = Safe_strdup(buffer);
/* set immd2 field if required */
- if (aop->aopu.aop_immd.from_cast_remat) {
- sprintf(buffer,"#0x%02x",ptr_type);
- aop->aopu.aop_immd.aop_immd2 = Safe_calloc (1, strlen (buffer) + 1);
- strcpy (aop->aopu.aop_immd.aop_immd2, buffer);
- }
+ if (aop->aopu.aop_immd.from_cast_remat)
+ {
+ SNPRINTF (buffer, sizeof(buffer), "#0x%02x", ptr_type);
+ aop->aopu.aop_immd.aop_immd2 = Safe_strdup(buffer);
+ }
return aop;
}
{
int j;
if (!sym1->regs[i])
- continue;
+ continue;
for (j = 0; j < sym2->nRegs; j++)
- {
- if (!sym2->regs[j])
- continue;
+ {
+ if (!sym2->regs[j])
+ continue;
- if (sym2->regs[j] == sym1->regs[i])
- return TRUE;
- }
+ if (sym2->regs[j] == sym1->regs[i])
+ return TRUE;
+ }
}
return FALSE;
{
symbol *sym1, *sym2;
- /* if they not symbols */
+ /* if they're not symbols */
if (!IS_SYMOP (op1) || !IS_SYMOP (op2))
return FALSE;
if (sym1 == sym2)
return TRUE;
- if (strcmp (sym1->rname, sym2->rname) == 0)
+ /* if they have the same rname */
+ if (sym1->rname[0] && sym2->rname[0] &&
+ strcmp (sym1->rname, sym2->rname) == 0 &&
+ !(IS_PARM (op2) && IS_ITEMP (op1)))
return TRUE;
-
/* if left is a tmp & right is not */
if (IS_ITEMP (op1) &&
!IS_ITEMP (op2) &&
return FALSE;
}
+/*-----------------------------------------------------------------*/
+/* sameByte - two asmops have the same address at given offsets */
+/*-----------------------------------------------------------------*/
+static bool
+sameByte (asmop * aop1, int off1, asmop * aop2, int off2)
+{
+ if (aop1 == aop2 && off1 == off2)
+ return TRUE;
+
+ if (aop1->type != AOP_REG && aop1->type != AOP_CRY)
+ return FALSE;
+
+ if (aop1->type != aop2->type)
+ return FALSE;
+
+ if (aop1->aopu.aop_reg[off1] != aop2->aopu.aop_reg[off2])
+ return FALSE;
+
+ return TRUE;
+}
+
/*-----------------------------------------------------------------*/
/* sameRegs - two asmops have the same registers */
/*-----------------------------------------------------------------*/
if (aop1 == aop2)
return TRUE;
- if (aop1->type != AOP_REG ||
- aop2->type != AOP_REG)
+ if (aop1->type != AOP_REG && aop1->type != AOP_CRY)
+ return FALSE;
+
+ if (aop1->type != aop2->type)
return FALSE;
if (aop1->size != aop2->size)
return FALSE;
for (i = 0; i < aop1->size; i++)
- if (aop1->aopu.aop_reg[i] !=
- aop2->aopu.aop_reg[i])
+ if (aop1->aopu.aop_reg[i] != aop2->aopu.aop_reg[i])
return FALSE;
return TRUE;
}
/* if already has a asmop then continue */
- if (op->aop )
- return;
+ if (op->aop)
+ {
+ op->aop->allocated++;
+ return;
+ }
/* if the underlying symbol has a aop */
if (IS_SYMOP (op) && OP_SYMBOL (op)->aop)
{
op->aop = OP_SYMBOL (op)->aop;
+ op->aop->allocated++;
return;
}
}
/* this is a temporary : this has
- only four choices :
+ only five choices :
a) register
b) spillocation
c) rematerialize
/* rematerialize it NOW */
if (sym->remat)
- {
- sym->aop = op->aop = aop =
- aopForRemat (sym);
- aop->size = getSize (sym->type);
- return;
- }
+ {
+ sym->aop = op->aop = aop =
+ aopForRemat (sym);
+ aop->size = getSize (sym->type);
+ return;
+ }
if (sym->accuse)
- {
- int i;
- aop = op->aop = sym->aop = newAsmop (AOP_ACC);
- aop->size = getSize (sym->type);
- for (i = 0; i < 2; i++)
- aop->aopu.aop_str[i] = accUse[i];
- return;
- }
+ {
+ int i;
+ aop = op->aop = sym->aop = newAsmop (AOP_ACC);
+ aop->size = getSize (sym->type);
+ for (i = 0; i < 2; i++)
+ aop->aopu.aop_str[i] = accUse[i];
+ return;
+ }
if (sym->ruonly)
- {
- unsigned i;
-
- aop = op->aop = sym->aop = newAsmop (AOP_STR);
- aop->size = getSize (sym->type);
- for (i = 0; i < fReturnSizeMCS51; i++)
- aop->aopu.aop_str[i] = fReturn[i];
- return;
- }
-
- /* else spill location */
- if (sym->usl.spillLoc && getSize(sym->type) != getSize(sym->usl.spillLoc->type)) {
- /* force a new aop if sizes differ */
- sym->usl.spillLoc->aop = NULL;
- }
- sym->aop = op->aop = aop =
- aopForSym (ic, sym->usl.spillLoc, result);
+ {
+ unsigned i;
+
+ aop = op->aop = sym->aop = newAsmop (AOP_STR);
+ aop->size = getSize (sym->type);
+ for (i = 0; i < fReturnSizeMCS51; i++)
+ aop->aopu.aop_str[i] = fReturn[i];
+ return;
+ }
+
+ if (sym->usl.spillLoc)
+ {
+ asmop *oldAsmOp = NULL;
+
+ if (getSize(sym->type) != getSize(sym->usl.spillLoc->type))
+ {
+ /* force a new aop if sizes differ */
+ oldAsmOp = sym->usl.spillLoc->aop;
+ sym->usl.spillLoc->aop = NULL;
+ }
+ sym->aop = op->aop = aop =
+ aopForSym (ic, sym->usl.spillLoc, result);
+ if (getSize(sym->type) != getSize(sym->usl.spillLoc->type))
+ {
+ /* Don't reuse the new aop, go with the last one */
+ sym->usl.spillLoc->aop = oldAsmOp;
+ }
+ aop->size = getSize (sym->type);
+ return;
+ }
+
+ /* else must be a dummy iTemp */
+ sym->aop = op->aop = aop = newAsmop (AOP_DUMMY);
aop->size = getSize (sym->type);
return;
}
+ /* if the type is a bit register */
+ if (sym->regType == REG_BIT)
+ {
+ sym->aop = op->aop = aop = newAsmop (AOP_CRY);
+ aop->size = sym->nRegs;//1???
+ aop->aopu.aop_reg[0] = sym->regs[0];
+ aop->aopu.aop_dir = sym->regs[0]->name;
+ return;
+ }
+
/* must be in a register */
sym->aop = op->aop = aop = newAsmop (AOP_REG);
aop->size = sym->nRegs;
if (!aop)
return;
- if (aop->freed)
- goto dealloc;
+ aop->allocated--;
- aop->freed = 1;
+ if (aop->allocated)
+ goto dealloc;
- /* depending on the asmop type only three cases need work AOP_RO
- , AOP_R1 && AOP_STK */
+ /* depending on the asmop type only three cases need work
+ AOP_R0, AOP_R1 & AOP_STK */
switch (aop->type)
{
case AOP_R0:
- if (_G.r0Pushed)
- {
- if (pop)
- {
- emitcode ("pop", "ar0");
- _G.r0Pushed--;
- }
- }
+ if (R0INB)
+ {
+ emitcode ("mov", "r0,b");
+ R0INB--;
+ }
+ else if (_G.r0Pushed)
+ {
+ if (pop)
+ {
+ emitcode ("pop", "ar0");
+ _G.r0Pushed--;
+ }
+ }
bitVectUnSetBit (ic->rUsed, R0_IDX);
break;
case AOP_R1:
- if (_G.r1Pushed)
- {
- if (pop)
- {
- emitcode ("pop", "ar1");
- _G.r1Pushed--;
- }
- }
+ if (R1INB)
+ {
+ emitcode ("mov", "r1,b");
+ R1INB--;
+ }
+ else if (_G.r1Pushed)
+ {
+ if (pop)
+ {
+ emitcode ("pop", "ar1");
+ _G.r1Pushed--;
+ }
+ }
bitVectUnSetBit (ic->rUsed, R1_IDX);
break;
case AOP_STK:
{
- int sz = aop->size;
- int stk = aop->aopu.aop_stk + aop->size - 1;
- bitVectUnSetBit (ic->rUsed, R0_IDX);
- bitVectUnSetBit (ic->rUsed, R1_IDX);
-
- getFreePtr (ic, &aop, FALSE);
-
- if (stk)
- {
- emitcode ("mov", "a,_bp");
- emitcode ("add", "a,#0x%02x", ((char) stk) & 0xff);
- emitcode ("mov", "%s,a", aop->aopu.aop_ptr->name);
- }
- else
- {
- emitcode ("mov", "%s,_bp", aop->aopu.aop_ptr->name);
- }
-
- while (sz--)
- {
- emitcode ("pop", "acc");
- emitcode ("mov", "@%s,a", aop->aopu.aop_ptr->name);
- if (!sz)
- break;
- emitcode ("dec", "%s", aop->aopu.aop_ptr->name);
- }
- op->aop = aop;
- freeAsmop (op, NULL, ic, TRUE);
- if (_G.r1Pushed)
- {
- emitcode ("pop", "ar1");
- _G.r1Pushed--;
- }
-
- if (_G.r0Pushed)
- {
- emitcode ("pop", "ar0");
- _G.r0Pushed--;
- }
+ int sz = aop->size;
+ int stk = aop->aopu.aop_stk + aop->size - 1;
+ bitVectUnSetBit (ic->rUsed, R0_IDX);
+ bitVectUnSetBit (ic->rUsed, R1_IDX);
+
+ getFreePtr (ic, &aop, FALSE);
+
+ if (stk)
+ {
+ emitcode ("mov", "a,_bp");
+ emitcode ("add", "a,#0x%02x", ((char) stk) & 0xff);
+ emitcode ("mov", "%s,a", aop->aopu.aop_ptr->name);
+ }
+ else
+ {
+ emitcode ("mov", "%s,_bp", aop->aopu.aop_ptr->name);
+ }
+
+ while (sz--)
+ {
+ emitcode ("pop", "acc");
+ emitcode ("mov", "@%s,a", aop->aopu.aop_ptr->name);
+ if (!sz)
+ break;
+ emitcode ("dec", "%s", aop->aopu.aop_ptr->name);
+ }
+ op->aop = aop;
+ freeAsmop (op, NULL, ic, TRUE);
+ if (_G.r1Pushed)
+ {
+ emitcode ("pop", "ar1");
+ _G.r1Pushed--;
+ }
+ if (_G.r0Pushed)
+ {
+ emitcode ("pop", "ar0");
+ _G.r0Pushed--;
+ }
}
+ break;
}
dealloc:
{
op->aop = NULL;
if (IS_SYMOP (op))
- {
- OP_SYMBOL (op)->aop = NULL;
- /* if the symbol has a spill */
- if (SPIL_LOC (op))
- SPIL_LOC (op)->aop = NULL;
- }
+ {
+ OP_SYMBOL (op)->aop = NULL;
+ /* if the symbol has a spill */
+ if (SPIL_LOC (op))
+ SPIL_LOC (op)->aop = NULL;
+ }
}
}
-/*-----------------------------------------------------------------*/
-/* aopGetUsesAcc - indicates ahead of time whether aopGet() will */
-/* clobber the accumulator */
-/*-----------------------------------------------------------------*/
-static bool
-aopGetUsesAcc (asmop *aop, int offset)
+/*------------------------------------------------------------------*/
+/* freeForBranchAsmop - partial free up of Asmop for a branch; just */
+/* pop r0 or r1 off stack if pushed */
+/*------------------------------------------------------------------*/
+static void
+freeForBranchAsmop (operand * op)
{
- if (offset > (aop->size - 1))
- return FALSE;
+ asmop *aop;
+
+ if (!op)
+ return;
+
+ aop = op->aop;
+
+ if (!aop)
+ return;
+
+ if (!aop->allocated)
+ return;
+
+ switch (aop->type)
+ {
+ case AOP_R0:
+ if (R0INB)
+ {
+ emitcode ("mov", "r0,b");
+ }
+ else if (_G.r0Pushed)
+ {
+ emitcode ("pop", "ar0");
+ }
+ break;
+
+ case AOP_R1:
+ if (R1INB)
+ {
+ emitcode ("mov", "r1,b");
+ }
+ else if (_G.r1Pushed)
+ {
+ emitcode ("pop", "ar1");
+ }
+ break;
+
+ case AOP_STK:
+ {
+ int sz = aop->size;
+ int stk = aop->aopu.aop_stk + aop->size - 1;
+
+ emitcode ("mov", "b,r0");
+ if (stk)
+ {
+ emitcode ("mov", "a,_bp");
+ emitcode ("add", "a,#0x%02x", ((char) stk) & 0xff);
+ emitcode ("mov", "r0,a");
+ }
+ else
+ {
+ emitcode ("mov", "r0,_bp");
+ }
+
+ while (sz--)
+ {
+ emitcode ("pop", "acc");
+ emitcode ("mov", "@r0,a");
+ if (!sz)
+ break;
+ emitcode ("dec", "r0");
+ }
+ emitcode ("mov", "r0,b");
+ }
+ }
+
+}
+
+/*-----------------------------------------------------------------*/
+/* aopGetUsesAcc - indicates ahead of time whether aopGet() will */
+/* clobber the accumulator */
+/*-----------------------------------------------------------------*/
+static bool
+aopGetUsesAcc (operand * oper, int offset)
+{
+ asmop * aop = AOP (oper);
+
+ if (offset > (aop->size - 1))
+ return FALSE;
switch (aop->type)
{
case AOP_R0:
case AOP_R1:
if (aop->paged)
- return TRUE;
+ return TRUE;
return FALSE;
case AOP_DPTR:
return TRUE;
case AOP_CRY:
return TRUE;
case AOP_ACC:
+ if (offset)
+ return FALSE;
return TRUE;
case AOP_LIT:
return FALSE;
case AOP_STR:
if (strcmp (aop->aopu.aop_str[offset], "a") == 0)
- return TRUE;
+ return TRUE;
+ return FALSE;
+ case AOP_DUMMY:
return FALSE;
default:
/* Error case --- will have been caught already */
}
}
-
-/*-----------------------------------------------------------------*/
-/* aopGet - for fetching value of the aop */
-/*-----------------------------------------------------------------*/
+/*-------------------------------------------------------------------*/
+/* aopGet - for fetching value of the aop */
+/*-------------------------------------------------------------------*/
static char *
-aopGet (asmop * aop, int offset, bool bit16, bool dname)
+aopGet (operand * oper, int offset, bool bit16, bool dname)
{
- char *s = buffer;
- char *rs;
+ asmop * aop = AOP (oper);
/* offset is greater than
size then zero */
/* depending on type */
switch (aop->type)
{
+ case AOP_DUMMY:
+ return zero;
case AOP_R0:
case AOP_R1:
/* if we need to increment it */
while (offset > aop->coff)
- {
- emitcode ("inc", "%s", aop->aopu.aop_ptr->name);
- aop->coff++;
- }
+ {
+ emitcode ("inc", "%s", aop->aopu.aop_ptr->name);
+ aop->coff++;
+ }
while (offset < aop->coff)
- {
- emitcode ("dec", "%s", aop->aopu.aop_ptr->name);
- aop->coff--;
- }
+ {
+ emitcode ("dec", "%s", aop->aopu.aop_ptr->name);
+ aop->coff--;
+ }
aop->coff = offset;
if (aop->paged)
- {
- emitcode ("movx", "a,@%s", aop->aopu.aop_ptr->name);
- return (dname ? "acc" : "a");
- }
- sprintf (s, "@%s", aop->aopu.aop_ptr->name);
- rs = Safe_calloc (1, strlen (s) + 1);
- strcpy (rs, s);
- return rs;
+ {
+ emitcode ("movx", "a,@%s", aop->aopu.aop_ptr->name);
+ return (dname ? "acc" : "a");
+ }
+ SNPRINTF (buffer, sizeof(buffer), "@%s", aop->aopu.aop_ptr->name);
+ return Safe_strdup(buffer);
case AOP_DPTR:
if (aop->code && aop->coff==0 && offset>=1) {
- emitcode ("mov", "a,#0x%02x", offset);
- emitcode ("movc", "a,@a+dptr");
- return (dname ? "acc" : "a");
+ emitcode ("mov", "a,#0x%02x", offset);
+ emitcode ("movc", "a,@a+dptr");
+ return (dname ? "acc" : "a");
}
while (offset > aop->coff)
- {
- emitcode ("inc", "dptr");
- aop->coff++;
- }
+ {
+ emitcode ("inc", "dptr");
+ aop->coff++;
+ }
while (offset < aop->coff)
- {
- emitcode ("lcall", "__decdptr");
- aop->coff--;
- }
+ {
+ emitcode ("lcall", "__decdptr");
+ aop->coff--;
+ }
aop->coff = offset;
if (aop->code)
- {
- emitcode ("clr", "a");
- emitcode ("movc", "a,@a+dptr");
- }
+ {
+ emitcode ("clr", "a");
+ emitcode ("movc", "a,@a+dptr");
+ }
else
- {
- emitcode ("movx", "a,@dptr");
- }
+ {
+ emitcode ("movx", "a,@dptr");
+ }
return (dname ? "acc" : "a");
-
case AOP_IMMD:
- if (aop->aopu.aop_immd.from_cast_remat && (offset == (aop->size-1))) {
- sprintf(s,"%s",aop->aopu.aop_immd.aop_immd2);
- } else if (bit16)
- sprintf (s, "#%s", aop->aopu.aop_immd.aop_immd1);
+ if (aop->aopu.aop_immd.from_cast_remat && (offset == (aop->size-1)))
+ {
+ SNPRINTF(buffer, sizeof(buffer),
+ "%s",aop->aopu.aop_immd.aop_immd2);
+ }
+ else if (bit16)
+ {
+ SNPRINTF(buffer, sizeof(buffer),
+ "#%s", aop->aopu.aop_immd.aop_immd1);
+ }
else if (offset)
- sprintf (s, "#(%s >> %d)",
- aop->aopu.aop_immd.aop_immd1,
- offset * 8);
+ {
+ SNPRINTF (buffer, sizeof(buffer),
+ "#(%s >> %d)",
+ aop->aopu.aop_immd.aop_immd1,
+ offset * 8);
+ }
else
- sprintf (s, "#%s",
- aop->aopu.aop_immd.aop_immd1);
- rs = Safe_calloc (1, strlen (s) + 1);
- strcpy (rs, s);
- return rs;
+ {
+ SNPRINTF (buffer, sizeof(buffer),
+ "#%s",
+ aop->aopu.aop_immd.aop_immd1);
+ }
+ return Safe_strdup(buffer);
case AOP_DIR:
- if (offset)
- sprintf (s, "(%s + %d)",
- aop->aopu.aop_dir,
- offset);
+ if (SPEC_SCLS (getSpec (operandType (oper))) == S_SFR && offset)
+ {
+ SNPRINTF (buffer, sizeof(buffer),
+ "(%s >> %d)",
+ aop->aopu.aop_dir, offset * 8);
+ }
+ else if (offset)
+ {
+ SNPRINTF (buffer, sizeof(buffer),
+ "(%s + %d)",
+ aop->aopu.aop_dir,
+ offset);
+ }
else
- sprintf (s, "%s", aop->aopu.aop_dir);
- rs = Safe_calloc (1, strlen (s) + 1);
- strcpy (rs, s);
- return rs;
+ {
+ SNPRINTF (buffer, sizeof(buffer),
+ "%s",
+ aop->aopu.aop_dir);
+ }
+
+ return Safe_strdup(buffer);
case AOP_REG:
if (dname)
- return aop->aopu.aop_reg[offset]->dname;
+ return aop->aopu.aop_reg[offset]->dname;
else
- return aop->aopu.aop_reg[offset]->name;
+ return aop->aopu.aop_reg[offset]->name;
case AOP_CRY:
emitcode ("clr", "a");
case AOP_ACC:
if (!offset && dname)
- return "acc";
+ return "acc";
return aop->aopu.aop_str[offset];
case AOP_LIT:
case AOP_STR:
aop->coff = offset;
if (strcmp (aop->aopu.aop_str[offset], "a") == 0 &&
- dname)
- return "acc";
+ dname)
+ return "acc";
return aop->aopu.aop_str[offset];
}
werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "aopget got unsupported aop->type");
+ "aopget got unsupported aop->type");
exit (1);
}
+
/*-----------------------------------------------------------------*/
-/* aopPut - puts a string for a aop */
+/* aopPutUsesAcc - indicates ahead of time whether aopPut() will */
+/* clobber the accumulator */
/*-----------------------------------------------------------------*/
-static void
-aopPut (asmop * aop, const char *s, int offset, bool bvolatile)
+static bool
+aopPutUsesAcc (operand * oper, const char *s, int offset)
+{
+ asmop * aop = AOP (oper);
+
+ if (offset > (aop->size - 1))
+ return FALSE;
+
+ switch (aop->type)
+ {
+ case AOP_DUMMY:
+ return TRUE;
+ case AOP_DIR:
+ return FALSE;
+ case AOP_REG:
+ wassert(strcmp(aop->aopu.aop_reg[offset]->name, "a"));
+ return FALSE;
+ case AOP_DPTR:
+ return TRUE;
+ case AOP_R0:
+ case AOP_R1:
+ return ((aop->paged) || (*s == '@'));
+ case AOP_STK:
+ return (*s == '@');
+ case AOP_CRY:
+ return (!aop->aopu.aop_dir || strcmp(s, aop->aopu.aop_dir));
+ case AOP_STR:
+ return FALSE;
+ case AOP_IMMD:
+ return FALSE;
+ case AOP_ACC:
+ return FALSE;
+ default:
+ /* Error case --- will have been caught already */
+ wassert(0);
+ return FALSE;
+ }
+}
+
+/*-----------------------------------------------------------------*/
+/* aopPut - puts a string for a aop and indicates if acc is in use */
+/*-----------------------------------------------------------------*/
+static bool
+aopPut (operand * result, const char *s, int offset)
{
- char *d = buffer;
+ bool bvolatile = isOperandVolatile (result, FALSE);
+ bool accuse = FALSE;
+ asmop * aop = AOP (result);
if (aop->size && offset > (aop->size - 1))
{
werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "aopPut got offset > aop->size");
+ "aopPut got offset > aop->size");
exit (1);
}
/* depending on where it is ofcourse */
switch (aop->type)
{
+ case AOP_DUMMY:
+ MOVA (s); /* read s in case it was volatile */
+ accuse = TRUE;
+ break;
+
case AOP_DIR:
- if (offset)
- sprintf (d, "(%s + %d)",
- aop->aopu.aop_dir, offset);
+ if (SPEC_SCLS (getSpec (operandType (result))) == S_SFR && offset)
+ {
+ SNPRINTF (buffer, sizeof(buffer),
+ "(%s >> %d)",
+ aop->aopu.aop_dir, offset * 8);
+ }
+ else if (offset)
+ {
+ SNPRINTF (buffer, sizeof(buffer),
+ "(%s + %d)",
+ aop->aopu.aop_dir, offset);
+ }
else
- sprintf (d, "%s", aop->aopu.aop_dir);
-
- if (strcmp (d, s) ||
- bvolatile)
- emitcode ("mov", "%s,%s", d, s);
+ {
+ SNPRINTF (buffer, sizeof(buffer),
+ "%s",
+ aop->aopu.aop_dir);
+ }
+ if (strcmp (buffer, s) || bvolatile)
+ {
+ emitcode ("mov", "%s,%s", buffer, s);
+ }
+ if (!strcmp (buffer, "acc"))
+ {
+ accuse = TRUE;
+ }
break;
case AOP_REG:
if (strcmp (aop->aopu.aop_reg[offset]->name, s) != 0 &&
- strcmp (aop->aopu.aop_reg[offset]->dname, s) != 0)
- {
- if (*s == '@' ||
- strcmp (s, "r0") == 0 ||
- strcmp (s, "r1") == 0 ||
- strcmp (s, "r2") == 0 ||
- strcmp (s, "r3") == 0 ||
- strcmp (s, "r4") == 0 ||
- strcmp (s, "r5") == 0 ||
- strcmp (s, "r6") == 0 ||
- strcmp (s, "r7") == 0)
- emitcode ("mov", "%s,%s",
- aop->aopu.aop_reg[offset]->dname, s);
- else
- emitcode ("mov", "%s,%s",
- aop->aopu.aop_reg[offset]->name, s);
- }
+ strcmp (aop->aopu.aop_reg[offset]->dname, s) != 0)
+ {
+ if (*s == '@' ||
+ strcmp (s, "r0") == 0 ||
+ strcmp (s, "r1") == 0 ||
+ strcmp (s, "r2") == 0 ||
+ strcmp (s, "r3") == 0 ||
+ strcmp (s, "r4") == 0 ||
+ strcmp (s, "r5") == 0 ||
+ strcmp (s, "r6") == 0 ||
+ strcmp (s, "r7") == 0)
+ {
+ emitcode ("mov", "%s,%s",
+ aop->aopu.aop_reg[offset]->dname, s);
+ }
+ else
+ {
+ emitcode ("mov", "%s,%s",
+ aop->aopu.aop_reg[offset]->name, s);
+ }
+ }
break;
case AOP_DPTR:
if (aop->code)
- {
- werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "aopPut writing to code space");
- exit (1);
- }
+ {
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "aopPut writing to code space");
+ exit (1);
+ }
while (offset > aop->coff)
- {
- aop->coff++;
- emitcode ("inc", "dptr");
- }
+ {
+ aop->coff++;
+ emitcode ("inc", "dptr");
+ }
while (offset < aop->coff)
- {
- aop->coff--;
- emitcode ("lcall", "__decdptr");
- }
+ {
+ aop->coff--;
+ emitcode ("lcall", "__decdptr");
+ }
aop->coff = offset;
- /* if not in accumulater */
+ /* if not in accumulator */
MOVA (s);
emitcode ("movx", "@dptr,a");
case AOP_R0:
case AOP_R1:
while (offset > aop->coff)
- {
- aop->coff++;
- emitcode ("inc", "%s", aop->aopu.aop_ptr->name);
- }
+ {
+ aop->coff++;
+ emitcode ("inc", "%s", aop->aopu.aop_ptr->name);
+ }
while (offset < aop->coff)
- {
- aop->coff--;
- emitcode ("dec", "%s", aop->aopu.aop_ptr->name);
- }
+ {
+ aop->coff--;
+ emitcode ("dec", "%s", aop->aopu.aop_ptr->name);
+ }
aop->coff = offset;
if (aop->paged)
- {
- MOVA (s);
- emitcode ("movx", "@%s,a", aop->aopu.aop_ptr->name);
-
- }
+ {
+ MOVA (s);
+ emitcode ("movx", "@%s,a", aop->aopu.aop_ptr->name);
+ }
else if (*s == '@')
- {
- MOVA (s);
- emitcode ("mov", "@%s,a", aop->aopu.aop_ptr->name);
- }
+ {
+ MOVA (s);
+ emitcode ("mov", "@%s,a", aop->aopu.aop_ptr->name);
+ }
else if (strcmp (s, "r0") == 0 ||
- strcmp (s, "r1") == 0 ||
- strcmp (s, "r2") == 0 ||
- strcmp (s, "r3") == 0 ||
- strcmp (s, "r4") == 0 ||
- strcmp (s, "r5") == 0 ||
- strcmp (s, "r6") == 0 ||
- strcmp (s, "r7") == 0)
- {
- char buffer[10];
- sprintf (buffer, "a%s", s);
- emitcode ("mov", "@%s,%s",
- aop->aopu.aop_ptr->name, buffer);
- }
+ strcmp (s, "r1") == 0 ||
+ strcmp (s, "r2") == 0 ||
+ strcmp (s, "r3") == 0 ||
+ strcmp (s, "r4") == 0 ||
+ strcmp (s, "r5") == 0 ||
+ strcmp (s, "r6") == 0 ||
+ strcmp (s, "r7") == 0)
+ {
+ char buffer[10];
+ SNPRINTF (buffer, sizeof(buffer), "a%s", s);
+ emitcode ("mov", "@%s,%s",
+ aop->aopu.aop_ptr->name, buffer);
+ }
else
- emitcode ("mov", "@%s,%s", aop->aopu.aop_ptr->name, s);
-
+ {
+ emitcode ("mov", "@%s,%s", aop->aopu.aop_ptr->name, s);
+ }
break;
case AOP_STK:
if (strcmp (s, "a") == 0)
- emitcode ("push", "acc");
+ emitcode ("push", "acc");
else
- if (*s=='@') {
- MOVA(s);
- emitcode ("push", "acc");
- } else {
- emitcode ("push", s);
- }
+ if (*s=='@') {
+ MOVA(s);
+ emitcode ("push", "acc");
+ } else {
+ emitcode ("push", s);
+ }
break;
case AOP_CRY:
- /* if bit variable */
+ /* if not bit variable */
if (!aop->aopu.aop_dir)
- {
- emitcode ("clr", "a");
- emitcode ("rlc", "a");
- }
+ {
+ /* inefficient: move carry into A and use jz/jnz */
+ emitcode ("clr", "a");
+ emitcode ("rlc", "a");
+ accuse = TRUE;
+ }
else
- {
- if (s == zero)
- emitcode ("clr", "%s", aop->aopu.aop_dir);
- else if (s == one)
- emitcode ("setb", "%s", aop->aopu.aop_dir);
- else if (!strcmp (s, "c"))
- emitcode ("mov", "%s,c", aop->aopu.aop_dir);
- else
- {
- if (strcmp (s, "a"))
- {
- MOVA (s);
- }
- {
- /* set C, if a >= 1 */
- emitcode ("add", "a,#0xff");
- emitcode ("mov", "%s,c", aop->aopu.aop_dir);
- }
- }
- }
+ {
+ if (s == zero)
+ emitcode ("clr", "%s", aop->aopu.aop_dir);
+ else if (s == one)
+ emitcode ("setb", "%s", aop->aopu.aop_dir);
+ else if (!strcmp (s, "c"))
+ emitcode ("mov", "%s,c", aop->aopu.aop_dir);
+ else if (strcmp (s, aop->aopu.aop_dir))
+ {
+ MOVA (s);
+ /* set C, if a >= 1 */
+ emitcode ("add", "a,#0xff");
+ emitcode ("mov", "%s,c", aop->aopu.aop_dir);
+ }
+ }
break;
case AOP_STR:
aop->coff = offset;
- if (strcmp (aop->aopu.aop_str[offset], s) ||
- bvolatile)
- emitcode ("mov", "%s,%s", aop->aopu.aop_str[offset], s);
+ if (strcmp (aop->aopu.aop_str[offset], s) || bvolatile)
+ emitcode ("mov", "%s,%s", aop->aopu.aop_str[offset], s);
break;
case AOP_ACC:
+ accuse = TRUE;
aop->coff = offset;
- if (!offset && (strcmp (s, "acc") == 0) &&
- !bvolatile)
- break;
+ if (!offset && (strcmp (s, "acc") == 0) && !bvolatile)
+ break;
- if (strcmp (aop->aopu.aop_str[offset], s) &&
- !bvolatile)
- emitcode ("mov", "%s,%s", aop->aopu.aop_str[offset], s);
+ if (strcmp (aop->aopu.aop_str[offset], s) && !bvolatile)
+ emitcode ("mov", "%s,%s", aop->aopu.aop_str[offset], s);
break;
default:
werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "aopPut got unsupported aop->type");
+ "aopPut got unsupported aop->type");
exit (1);
}
+ return accuse;
}
case AOP_R0:
case AOP_R1:
while (count--)
- emitcode ("inc", "%s", aop->aopu.aop_ptr->name);
+ emitcode ("inc", "%s", aop->aopu.aop_ptr->name);
break;
case AOP_DPTR:
while (count--)
- emitcode ("inc", "dptr");
+ emitcode ("inc", "dptr");
break;
}
static void
reAdjustPreg (asmop * aop)
{
- if ((aop->coff==0) || aop->size <= 1)
+ if ((aop->coff==0) || (aop->size <= 1))
return;
switch (aop->type)
case AOP_R0:
case AOP_R1:
while (aop->coff--)
- emitcode ("dec", "%s", aop->aopu.aop_ptr->name);
+ emitcode ("dec", "%s", aop->aopu.aop_ptr->name);
break;
case AOP_DPTR:
while (aop->coff--)
- {
- emitcode ("lcall", "__decdptr");
- }
+ {
+ emitcode ("lcall", "__decdptr");
+ }
break;
}
aop->coff = 0;
}
-#define AOP(op) op->aop
-#define AOP_TYPE(op) AOP(op)->type
-#define AOP_SIZE(op) AOP(op)->size
-#define IS_AOP_PREG(x) (AOP(x) && (AOP_TYPE(x) == AOP_R1 || \
- AOP_TYPE(x) == AOP_R0))
-
-#define AOP_NEEDSACC(x) (AOP(x) && (AOP_TYPE(x) == AOP_CRY || \
- AOP_TYPE(x) == AOP_DPTR || AOP(x)->paged))
-
-#define AOP_INPREG(x) (x && (x->type == AOP_REG && \
- (x->aopu.aop_reg[0] == mcs51_regWithIdx(R0_IDX) || \
- x->aopu.aop_reg[0] == mcs51_regWithIdx(R1_IDX) )))
-
-
/*-----------------------------------------------------------------*/
/* opIsGptr: returns non-zero if the passed operand is */
/* a generic pointer type. */
{
sym_link *type = operandType (op);
if (IS_GENPTR (type))
- {
- /* generic pointer; arithmetic operations
- * should ignore the high byte (pointer type).
- */
- size--;
- }
+ {
+ /* generic pointer; arithmetic operations
+ * should ignore the high byte (pointer type).
+ */
+ size--;
+ }
}
return size;
}
size = getDataSize (result);
if (size)
{
- aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", 0);
size--;
offset = 1;
/* unsigned or positive */
while (size--)
- {
- aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE));
- }
+ {
+ aopPut (result, zero, offset++);
+ }
}
}
{
/* if the result is bit */
if (AOP_TYPE (result) == AOP_CRY)
- aopPut (AOP (result), "c", 0, isOperandVolatile (result, FALSE));
+ {
+ aopPut (result, "c", 0);
+ }
else
{
emitcode ("clr", "a");
{
int size = AOP_SIZE (oper) - 1;
int offset = 1;
- MOVA (aopGet (AOP (oper), 0, FALSE, FALSE));
- while (size--)
- emitcode ("orl", "a,%s", aopGet (AOP (oper), offset++, FALSE, FALSE));
+ bool AccUsed = FALSE;
+ bool pushedB;
+
+ while (!AccUsed && size--)
+ {
+ AccUsed |= aopGetUsesAcc(oper, offset++);
+ }
+
+ size = AOP_SIZE (oper) - 1;
+ offset = 1;
+ MOVA (aopGet (oper, 0, FALSE, FALSE));
+ if (size && AccUsed && (AOP (oper)->type != AOP_ACC))
+ {
+ pushedB = pushB ();
+ emitcode("mov", "b,a");
+ while (--size)
+ {
+ MOVA (aopGet (oper, offset++, FALSE, FALSE));
+ emitcode ("orl", "b,a");
+ }
+ MOVA (aopGet (oper, offset++, FALSE, FALSE));
+ emitcode ("orl", "a,b");
+ popB (pushedB);
+ }
+ else
+ {
+ while (size--)
+ {
+ emitcode ("orl", "a,%s",
+ aopGet (oper, offset++, FALSE, FALSE));
+ }
+ }
+}
+
+
+/*-------------------------------------------------------------------*/
+/* xch_a_aopGet - for exchanging acc with value of the aop */
+/*-------------------------------------------------------------------*/
+static char *
+xch_a_aopGet (operand * oper, int offset, bool bit16, bool dname)
+{
+ char * l;
+
+ if (aopGetUsesAcc (oper, offset))
+ {
+ emitcode("mov", "b,a");
+ MOVA (aopGet (oper, offset, bit16, dname));
+ emitcode("xch", "a,b");
+ aopPut (oper, "a", offset);
+ emitcode("xch", "a,b");
+ l = "b";
+ }
+ else
+ {
+ l = aopGet (oper, offset, bit16, dname);
+ emitcode("xch", "a,%s", l);
+ }
+ return l;
}
{
symbol *tlbl;
- D(emitcode ("; genNot",""));
+ D (emitcode (";", "genNot"));
/* assign asmOps to operand & result */
aopOp (IC_LEFT (ic), ic, FALSE);
/* if in bit space then a special case */
if (AOP_TYPE (IC_LEFT (ic)) == AOP_CRY)
{
- emitcode ("mov", "c,%s", IC_LEFT (ic)->aop->aopu.aop_dir);
- emitcode ("cpl", "c");
- outBitC (IC_RESULT (ic));
+ /* if left==result then cpl bit */
+ if (sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))))
+ {
+ emitcode ("cpl", "%s", IC_LEFT (ic)->aop->aopu.aop_dir);
+ }
+ else
+ {
+ emitcode ("mov", "c,%s", IC_LEFT (ic)->aop->aopu.aop_dir);
+ emitcode ("cpl", "c");
+ outBitC (IC_RESULT (ic));
+ }
goto release;
}
toBoolean (IC_LEFT (ic));
+ /* set C, if a == 0 */
tlbl = newiTempLabel (NULL);
emitcode ("cjne", "a,#0x01,%05d$", tlbl->key + 100);
- emitcode ("", "%05d$:", tlbl->key + 100);
+ emitLabel (tlbl);
outBitC (IC_RESULT (ic));
release:
/* release the aops */
- freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? 0 : 1));
freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? 0 : 1));
}
int offset = 0;
int size;
symbol *tlbl;
+ sym_link *letype = getSpec (operandType (IC_LEFT (ic)));
- D(emitcode ("; genCpl",""));
+ D(emitcode (";", "genCpl"));
/* assign asmOps to operand & result */
aopOp (IC_LEFT (ic), ic, FALSE);
aopOp (IC_RESULT (ic), ic, TRUE);
/* special case if in bit space */
- if (AOP_TYPE (IC_RESULT (ic)) == AOP_CRY) {
- if (AOP_TYPE (IC_LEFT (ic)) == AOP_CRY) {
- emitcode ("mov", "c,%s", IC_LEFT (ic)->aop->aopu.aop_dir);
- emitcode ("cpl", "c");
- emitcode ("mov", "%s,c", IC_RESULT (ic)->aop->aopu.aop_dir);
+ if (AOP_TYPE (IC_RESULT (ic)) == AOP_CRY)
+ {
+ char *l;
+
+ if (AOP_TYPE (IC_LEFT (ic)) == AOP_CRY ||
+ (SPEC_USIGN (letype) && IS_CHAR (letype)))
+ {
+ /* promotion rules are responsible for this strange result:
+ bit -> int -> ~int -> bit
+ uchar -> int -> ~int -> bit
+ */
+ emitcode ("setb", "%s", IC_RESULT (ic)->aop->aopu.aop_dir);
+ goto release;
+ }
+
+ tlbl=newiTempLabel(NULL);
+ l = aopGet (IC_LEFT (ic), offset++, FALSE, FALSE);
+ if ((AOP_TYPE (IC_LEFT (ic)) == AOP_ACC && offset == 0) ||
+ AOP_TYPE (IC_LEFT (ic)) == AOP_REG ||
+ IS_AOP_PREG (IC_LEFT (ic)))
+ {
+ emitcode ("cjne", "%s,#0xFF,%05d$", l, tlbl->key + 100);
+ }
+ else
+ {
+ MOVA (l);
+ emitcode ("cjne", "a,#0xFF,%05d$", tlbl->key + 100);
+ }
+ emitLabel (tlbl);
+ outBitC (IC_RESULT(ic));
goto release;
}
- tlbl=newiTempLabel(NULL);
- emitcode ("cjne", "%s,#0x01,%05d$",
- aopGet(AOP(IC_LEFT(ic)), 0, FALSE,FALSE), tlbl->key+100);
- emitcode ("", "%05d$:", tlbl->key+100);
- outBitC (IC_RESULT(ic));
- goto release;
- }
size = AOP_SIZE (IC_RESULT (ic));
while (size--)
{
- char *l = aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE);
+ char *l = aopGet (IC_LEFT (ic), offset, FALSE, FALSE);
MOVA (l);
emitcode ("cpl", "a");
- aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
+ aopPut (IC_RESULT (ic), "a", offset++);
}
release:
/* release the aops */
- freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? 0 : 1));
freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? 0 : 1));
}
/*-----------------------------------------------------------------*/
int size, offset = 0;
char *l;
- D(emitcode ("; genUminusFloat",""));
+ D (emitcode (";", "genUminusFloat"));
/* for this we just copy and then flip the bit */
while (size--)
{
- aopPut (AOP (result),
- aopGet (AOP (op), offset, FALSE, FALSE),
- offset,
- isOperandVolatile (result, FALSE));
+ aopPut (result,
+ aopGet (op, offset, FALSE, FALSE),
+ offset);
offset++;
}
- l = aopGet (AOP (op), offset, FALSE, FALSE);
-
+ l = aopGet (op, offset, FALSE, FALSE);
MOVA (l);
emitcode ("cpl", "acc.7");
- aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", offset);
}
/*-----------------------------------------------------------------*/
genUminus (iCode * ic)
{
int offset, size;
- sym_link *optype, *rtype;
-
+ sym_link *optype;
- D(emitcode ("; genUminus",""));
+ D (emitcode (";", "genUminus"));
/* assign asmops */
aopOp (IC_LEFT (ic), ic, FALSE);
}
optype = operandType (IC_LEFT (ic));
- rtype = operandType (IC_RESULT (ic));
/* if float then do float stuff */
if (IS_FLOAT (optype))
/* otherwise subtract from zero */
size = AOP_SIZE (IC_LEFT (ic));
offset = 0;
- //CLRC ;
while (size--)
{
- char *l = aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE);
+ char *l = aopGet (IC_LEFT (ic), offset, FALSE, FALSE);
if (!strcmp (l, "a"))
- {
- if (offset == 0)
- SETC;
- emitcode ("cpl", "a");
- emitcode ("addc", "a,#0");
- }
+ {
+ if (offset == 0)
+ SETC;
+ emitcode ("cpl", "a");
+ emitcode ("addc", "a,#0");
+ }
else
- {
- if (offset == 0)
- CLRC;
- emitcode ("clr", "a");
- emitcode ("subb", "a,%s", l);
- }
- aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
+ {
+ if (offset == 0)
+ CLRC;
+ emitcode ("clr", "a");
+ emitcode ("subb", "a,%s", l);
+ }
+ aopPut (IC_RESULT (ic), "a", offset++);
}
/* if any remaining bytes in the result */
emitcode ("rlc", "a");
emitcode ("subb", "a,acc");
while (size--)
- aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
+ aopPut (IC_RESULT (ic), "a", offset++);
}
release:
/* release the aops */
- freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? 0 : 1));
freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? 0 : 1));
}
/*-----------------------------------------------------------------*/
if (ic->regsSaved)
return;
if (IS_SYMOP(IC_LEFT(ic)) &&
- (IFFUNC_CALLEESAVES(OP_SYMBOL(IC_LEFT(ic))->type) ||
- IFFUNC_ISNAKED(OP_SYM_TYPE(IC_LEFT (ic)))))
+ (IFFUNC_CALLEESAVES (OP_SYMBOL (IC_LEFT (ic))->type) ||
+ IFFUNC_ISNAKED (OP_SYM_TYPE (IC_LEFT (ic)))))
return;
-
- /* safe the registers in use at this time but skip the
+
+ /* save the registers in use at this time but skip the
ones for the result */
- rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
- mcs51_rUmaskForOp (IC_RESULT(ic)));
+ rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
+ mcs51_rUmaskForOp (IC_RESULT(ic)));
ic->regsSaved = 1;
if (options.useXstack)
{
- if (bitVectBitValue (rsave, R0_IDX))
- emitcode ("mov", "b,r0");
- emitcode ("mov", "r0,%s", spname);
- for (i = 0; i < mcs51_nRegs; i++)
- {
- if (bitVectBitValue (rsave, i))
- {
- if (i == R0_IDX)
- emitcode ("mov", "a,b");
- else
- emitcode ("mov", "a,%s", mcs51_regWithIdx (i)->name);
- emitcode ("movx", "@r0,a");
- emitcode ("inc", "r0");
- }
- }
- emitcode ("mov", "%s,r0", spname);
- if (bitVectBitValue (rsave, R0_IDX))
- emitcode ("mov", "r0,b");
- }
- else
- for (i = 0; i < mcs51_nRegs; i++)
- {
- if (bitVectBitValue (rsave, i))
- emitcode ("push", "%s", mcs51_regWithIdx (i)->dname);
- }
+ bitVect *rsavebits = bitVectIntersect (bitVectCopy (mcs51_allBitregs ()), rsave);
+ int nBits = bitVectnBitsOn (rsavebits);
+ int count = bitVectnBitsOn (rsave);
+
+ if (nBits != 0)
+ {
+ count = count - nBits + 1;
+ /* remove all but the first bits as they are pushed all at once */
+ rsave = bitVectCplAnd (rsave, rsavebits);
+ rsave = bitVectSetBit (rsave, bitVectFirstBit (rsavebits));
+ }
+
+ if (count == 1)
+ {
+ regs * reg = REG_WITH_INDEX (bitVectFirstBit (rsave));
+ if (reg->type == REG_BIT)
+ {
+ emitcode ("mov", "a,%s", reg->base);
+ }
+ else
+ {
+ emitcode ("mov", "a,%s", reg->name);
+ }
+ emitcode ("mov", "r0,%s", spname);
+ emitcode ("inc", "%s", spname);// allocate before use
+ emitcode ("movx", "@r0,a");
+ if (bitVectBitValue (rsave, R0_IDX))
+ emitcode ("mov", "r0,a");
+ }
+ else if (count != 0)
+ {
+ if (bitVectBitValue (rsave, R0_IDX))
+ {
+ emitcode ("push", "%s", REG_WITH_INDEX (R0_IDX)->dname);
+ }
+ emitcode ("mov", "r0,%s", spname);
+ MOVA ("r0");
+ emitcode ("add", "a,#%d", count);
+ emitcode ("mov", "%s,a", spname);
+ for (i = 0; i < mcs51_nRegs; i++)
+ {
+ if (bitVectBitValue (rsave, i))
+ {
+ regs * reg = REG_WITH_INDEX (i);
+ if (i == R0_IDX)
+ {
+ emitcode ("pop", "acc");
+ emitcode ("push", "acc");
+ }
+ else if (reg->type == REG_BIT)
+ {
+ emitcode ("mov", "a,%s", reg->base);
+ }
+ else
+ {
+ emitcode ("mov", "a,%s", reg->name);
+ }
+ emitcode ("movx", "@r0,a");
+ if (--count)
+ {
+ emitcode ("inc", "r0");
+ }
+ }
+ }
+ if (bitVectBitValue (rsave, R0_IDX))
+ {
+ emitcode ("pop", "%s", REG_WITH_INDEX (R0_IDX)->dname);
+ }
+ }
+ }
+ else
+ {
+ bool bits_pushed = FALSE;
+ for (i = 0; i < mcs51_nRegs; i++)
+ {
+ if (bitVectBitValue (rsave, i))
+ {
+ bits_pushed = pushReg (i, bits_pushed);
+ }
+ }
+ }
}
/*-----------------------------------------------------------------*/
/* restore the registers in use at this time but skip the
ones for the result */
- rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
- mcs51_rUmaskForOp (IC_RESULT(ic)));
+ rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
+ mcs51_rUmaskForOp (IC_RESULT(ic)));
if (options.useXstack)
{
- emitcode ("mov", "r0,%s", spname);
- for (i = mcs51_nRegs; i >= 0; i--)
- {
- if (bitVectBitValue (rsave, i))
- {
- emitcode ("dec", "r0");
- emitcode ("movx", "a,@r0");
- if (i == R0_IDX)
- emitcode ("mov", "b,a");
- else
- emitcode ("mov", "%s,a", mcs51_regWithIdx (i)->name);
- }
-
- }
- emitcode ("mov", "%s,r0", spname);
- if (bitVectBitValue (rsave, R0_IDX))
- emitcode ("mov", "r0,b");
+ bitVect *rsavebits = bitVectIntersect (bitVectCopy (mcs51_allBitregs ()), rsave);
+ int nBits = bitVectnBitsOn (rsavebits);
+ int count = bitVectnBitsOn (rsave);
+
+ if (nBits != 0)
+ {
+ count = count - nBits + 1;
+ /* remove all but the first bits as they are popped all at once */
+ rsave = bitVectCplAnd (rsave, rsavebits);
+ rsave = bitVectSetBit (rsave, bitVectFirstBit (rsavebits));
+ }
+
+ if (count == 1)
+ {
+ regs * reg = REG_WITH_INDEX (bitVectFirstBit (rsave));
+ emitcode ("mov", "r0,%s", spname);
+ emitcode ("dec", "r0");
+ emitcode ("movx", "a,@r0");
+ if (reg->type == REG_BIT)
+ {
+ emitcode ("mov", "%s,a", reg->base);
+ }
+ else
+ {
+ emitcode ("mov", "%s,a", reg->name);
+ }
+ emitcode ("dec", "%s", spname);
+ }
+ else if (count != 0)
+ {
+ emitcode ("mov", "r0,%s", spname);
+ for (i = mcs51_nRegs; i >= 0; i--)
+ {
+ if (bitVectBitValue (rsave, i))
+ {
+ regs * reg = REG_WITH_INDEX (i);
+ emitcode ("dec", "r0");
+ emitcode ("movx", "a,@r0");
+ if (i == R0_IDX)
+ {
+ emitcode ("push", "acc");
+ }
+ else if (reg->type == REG_BIT)
+ {
+ emitcode ("mov", "%s,a", reg->base);
+ }
+ else
+ {
+ emitcode ("mov", "%s,a", reg->name);
+ }
+ }
+ }
+ emitcode ("mov", "%s,r0", spname);
+ if (bitVectBitValue (rsave, R0_IDX))
+ {
+ emitcode ("pop", "ar0");
+ }
+ }
}
else
- for (i = mcs51_nRegs; i >= 0; i--)
- {
- if (bitVectBitValue (rsave, i))
- emitcode ("pop", "%s", mcs51_regWithIdx (i)->dname);
- }
-
+ {
+ bool bits_popped = FALSE;
+ for (i = mcs51_nRegs; i >= 0; i--)
+ {
+ if (bitVectBitValue (rsave, i))
+ {
+ bits_popped = popReg (i, bits_popped);
+ }
+ }
+ }
}
/*-----------------------------------------------------------------*/
-/* pushSide - */
+/* pushSide - */
/*-----------------------------------------------------------------*/
static void
pushSide (operand * oper, int size)
int offset = 0;
while (size--)
{
- char *l = aopGet (AOP (oper), offset++, FALSE, TRUE);
+ char *l = aopGet (oper, offset++, FALSE, TRUE);
if (AOP_TYPE (oper) != AOP_REG &&
- AOP_TYPE (oper) != AOP_DIR &&
- strcmp (l, "a"))
- {
- emitcode ("mov", "a,%s", l);
- emitcode ("push", "acc");
- }
+ AOP_TYPE (oper) != AOP_DIR &&
+ strcmp (l, "a"))
+ {
+ MOVA (l);
+ emitcode ("push", "acc");
+ }
else
- emitcode ("push", "%s", l);
+ {
+ emitcode ("push", "%s", l);
+ }
}
}
/*-----------------------------------------------------------------*/
-/* assignResultValue - */
+/* assignResultValue - also indicates if acc is in use afterwards */
/*-----------------------------------------------------------------*/
-static void
-assignResultValue (operand * oper)
+static bool
+assignResultValue (operand * oper, operand * func)
{
int offset = 0;
int size = AOP_SIZE (oper);
+ bool accuse = FALSE;
+ bool pushedA = FALSE;
+
+ if (func && IS_BIT (OP_SYM_ETYPE (func)))
+ {
+ outBitC (oper);
+ return FALSE;
+ }
+
+ if ((size > 3) && aopPutUsesAcc (oper, fReturn[offset], offset))
+ {
+ emitcode ("push", "acc");
+ pushedA = TRUE;
+ }
while (size--)
{
- aopPut (AOP (oper), fReturn[offset], offset, isOperandVolatile (oper, FALSE));
+ if ((offset == 3) && pushedA)
+ emitcode ("pop", "acc");
+ accuse |= aopPut (oper, fReturn[offset], offset);
offset++;
}
+ return accuse;
}
regs *r;
int size, offset = 0;
- D(emitcode ("; genXpush",""));
+ D (emitcode (";", "genXpush"));
aopOp (IC_LEFT (ic), ic, FALSE);
r = getFreePtr (ic, &aop, FALSE);
-
- emitcode ("mov", "%s,_spx", r->name);
-
size = AOP_SIZE (IC_LEFT (ic));
- while (size--)
- {
- char *l = aopGet (AOP (IC_LEFT (ic)),
- offset++, FALSE, FALSE);
- MOVA (l);
+ if (size == 1)
+ {
+ MOVA (aopGet (IC_LEFT (ic), 0, FALSE, FALSE));
+ emitcode ("mov", "%s,%s", r->name, spname);
+ emitcode ("inc", "%s", spname); // allocate space first
emitcode ("movx", "@%s,a", r->name);
- emitcode ("inc", "%s", r->name);
-
}
+ else
+ {
+ // allocate space first
+ emitcode ("mov", "%s,%s", r->name, spname);
+ MOVA (r->name);
+ emitcode ("add", "a,#%d", size);
+ emitcode ("mov", "%s,a", spname);
-
- emitcode ("mov", "_spx,%s", r->name);
+ while (size--)
+ {
+ MOVA (aopGet (IC_LEFT (ic), offset++, FALSE, FALSE));
+ emitcode ("movx", "@%s,a", r->name);
+ emitcode ("inc", "%s", r->name);
+ }
+ }
freeAsmop (NULL, aop, ic, TRUE);
freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
-/* genIpush - genrate code for pushing this gets a little complex */
+/* genIpush - generate code for pushing this gets a little complex */
/*-----------------------------------------------------------------*/
static void
genIpush (iCode * ic)
{
int size, offset = 0;
char *l;
+ char *prev = "";
- D(emitcode ("; genIpush",""));
+ D (emitcode (";", "genIpush"));
/* if this is not a parm push : ie. it is spill push
and spill push is always done on the local stack */
/* and the item is spilt then do nothing */
if (OP_SYMBOL (IC_LEFT (ic))->isspilt)
- return;
+ return;
aopOp (IC_LEFT (ic), ic, FALSE);
size = AOP_SIZE (IC_LEFT (ic));
/* push it on the stack */
while (size--)
- {
- l = aopGet (AOP (IC_LEFT (ic)), offset++, FALSE, TRUE);
- if (*l == '#')
- {
- MOVA (l);
- l = "acc";
- }
- emitcode ("push", "%s", l);
- }
+ {
+ l = aopGet (IC_LEFT (ic), offset++, FALSE, TRUE);
+ if (*l == '#')
+ {
+ MOVA (l);
+ l = "acc";
+ }
+ emitcode ("push", "%s", l);
+ }
return;
}
- /* this is a paramter push: in this case we call
+ /* this is a parameter push: in this case we call
the routine to find the call and save those
registers that need to be saved */
saveRegisters (ic);
/* then do the push */
aopOp (IC_LEFT (ic), ic, FALSE);
-
// pushSide(IC_LEFT(ic), AOP_SIZE(IC_LEFT(ic)));
size = AOP_SIZE (IC_LEFT (ic));
while (size--)
{
- l = aopGet (AOP (IC_LEFT (ic)), offset++, FALSE, TRUE);
+ l = aopGet (IC_LEFT (ic), offset++, FALSE, TRUE);
if (AOP_TYPE (IC_LEFT (ic)) != AOP_REG &&
- AOP_TYPE (IC_LEFT (ic)) != AOP_DIR &&
- strcmp (l, "a"))
- {
- emitcode ("mov", "a,%s", l);
- emitcode ("push", "acc");
- }
+ AOP_TYPE (IC_LEFT (ic)) != AOP_DIR)
+ {
+ if (strcmp (l, prev) || *l == '@')
+ MOVA (l);
+ emitcode ("push", "acc");
+ }
else
- emitcode ("push", "%s", l);
+ {
+ emitcode ("push", "%s", l);
+ }
+ prev = l;
}
freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
{
int size, offset;
- D(emitcode ("; genIpop",""));
+ D (emitcode (";", "genIpop"));
/* if the temp was not pushed then */
if (OP_SYMBOL (IC_LEFT (ic))->isspilt)
size = AOP_SIZE (IC_LEFT (ic));
offset = (size - 1);
while (size--)
- emitcode ("pop", "%s", aopGet (AOP (IC_LEFT (ic)), offset--,
- FALSE, TRUE));
+ {
+ emitcode ("pop", "%s", aopGet (IC_LEFT (ic), offset--,
+ FALSE, TRUE));
+ }
freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
-/* unsaveRBank - restores the resgister bank from stack */
+/* saveRBank - saves an entire register bank on the stack */
/*-----------------------------------------------------------------*/
static void
-unsaveRBank (int bank, iCode * ic, bool popPsw)
+saveRBank (int bank, iCode * ic, bool pushPsw)
{
int i;
+ int count = 8 + ((mcs51_nRegs > 8) ? 1 : 0) + (pushPsw ? 1 : 0);
asmop *aop = NULL;
regs *r = NULL;
if (options.useXstack)
- {
+ {
if (!ic)
- {
- /* Assume r0 is available for use. */
- r = mcs51_regWithIdx (R0_IDX);;
- }
+ {
+ /* Assume r0 is available for use. */
+ r = REG_WITH_INDEX (R0_IDX);;
+ }
else
- {
- aop = newAsmop (0);
- r = getFreePtr (ic, &aop, FALSE);
- }
- emitcode ("mov", "%s,_spx", r->name);
- }
-
- if (popPsw)
+ {
+ aop = newAsmop (0);
+ r = getFreePtr (ic, &aop, FALSE);
+ }
+ // allocate space first
+ emitcode ("mov", "%s,%s", r->name, spname);
+ MOVA (r->name);
+ emitcode ("add", "a,#%d", count);
+ emitcode ("mov", "%s,a", spname);
+ }
+
+ for (i = 0; i < 8; i++)
{
if (options.useXstack)
- {
- emitcode ("movx", "a,@%s", r->name);
- emitcode ("mov", "psw,a");
- emitcode ("dec", "%s", r->name);
- }
+ {
+ emitcode ("mov", "a,(%s+%d)",
+ regs8051[i].base, 8 * bank + regs8051[i].offset);
+ emitcode ("movx", "@%s,a", r->name);
+ if (--count)
+ emitcode ("inc", "%s", r->name);
+ }
else
- {
- emitcode ("pop", "psw");
- }
+ emitcode ("push", "(%s+%d)",
+ regs8051[i].base, 8 * bank + regs8051[i].offset);
}
- for (i = (mcs51_nRegs - 1); i >= 0; i--)
+ if (mcs51_nRegs > 8)
{
if (options.useXstack)
- {
- emitcode ("movx", "a,@%s", r->name);
- emitcode ("mov", "(%s+%d),a",
- regs8051[i].base, 8 * bank + regs8051[i].offset);
- emitcode ("dec", "%s", r->name);
-
- }
+ {
+ emitcode ("mov", "a,bits");
+ emitcode ("movx", "@%s,a", r->name);
+ if (--count)
+ emitcode ("inc", "%s", r->name);
+ }
else
- emitcode ("pop", "(%s+%d)",
- regs8051[i].base, 8 * bank + regs8051[i].offset);
+ {
+ emitcode ("push", "bits");
+ }
+ BitBankUsed = 1;
}
- if (options.useXstack)
+ if (pushPsw)
{
- emitcode ("mov", "_spx,%s", r->name);
+ if (options.useXstack)
+ {
+ emitcode ("mov", "a,psw");
+ emitcode ("movx", "@%s,a", r->name);
+ }
+ else
+ {
+ emitcode ("push", "psw");
+ }
+
+ emitcode ("mov", "psw,#0x%02x", (bank << 3) & 0x00ff);
}
-
+
if (aop)
+ {
+ freeAsmop (NULL, aop, ic, TRUE);
+ }
+
+ if (ic)
{
- freeAsmop (NULL, aop, ic, TRUE);
- }
+ ic->bankSaved = 1;
+ }
}
/*-----------------------------------------------------------------*/
-/* saveRBank - saves an entire register bank on the stack */
+/* unsaveRBank - restores the register bank from stack */
/*-----------------------------------------------------------------*/
static void
-saveRBank (int bank, iCode * ic, bool pushPsw)
+unsaveRBank (int bank, iCode * ic, bool popPsw)
{
int i;
asmop *aop = NULL;
if (options.useXstack)
{
if (!ic)
- {
- /* Assume r0 is available for use. */
- r = mcs51_regWithIdx (R0_IDX);;
- }
+ {
+ /* Assume r0 is available for use. */
+ r = REG_WITH_INDEX (R0_IDX);;
+ }
else
- {
- aop = newAsmop (0);
- r = getFreePtr (ic, &aop, FALSE);
- }
- emitcode ("mov", "%s,_spx", r->name);
+ {
+ aop = newAsmop (0);
+ r = getFreePtr (ic, &aop, FALSE);
+ }
+ emitcode ("mov", "%s,%s", r->name, spname);
}
- for (i = 0; i < mcs51_nRegs; i++)
+ if (popPsw)
{
if (options.useXstack)
- {
- emitcode ("inc", "%s", r->name);
- emitcode ("mov", "a,(%s+%d)",
- regs8051[i].base, 8 * bank + regs8051[i].offset);
- emitcode ("movx", "@%s,a", r->name);
- }
+ {
+ emitcode ("dec", "%s", r->name);
+ emitcode ("movx", "a,@%s", r->name);
+ emitcode ("mov", "psw,a");
+ }
else
- emitcode ("push", "(%s+%d)",
- regs8051[i].base, 8 * bank + regs8051[i].offset);
+ {
+ emitcode ("pop", "psw");
+ }
}
- if (pushPsw)
+ if (mcs51_nRegs > 8)
{
if (options.useXstack)
- {
- emitcode ("mov", "a,psw");
- emitcode ("movx", "@%s,a", r->name);
- emitcode ("inc", "%s", r->name);
- emitcode ("mov", "_spx,%s", r->name);
-
- }
+ {
+ emitcode ("dec", "%s", r->name);
+ emitcode ("movx", "a,@%s", r->name);
+ emitcode ("mov", "bits,a");
+ }
else
- {
- emitcode ("push", "psw");
- }
+ {
+ emitcode ("pop", "bits");
+ }
+ }
- emitcode ("mov", "psw,#0x%02x", (bank << 3) & 0x00ff);
+ for (i = 7; i >= 0; i--)
+ {
+ if (options.useXstack)
+ {
+ emitcode ("dec", "%s", r->name);
+ emitcode ("movx", "a,@%s", r->name);
+ emitcode ("mov", "(%s+%d),a",
+ regs8051[i].base, 8 * bank + regs8051[i].offset);
+ }
+ else
+ {
+ emitcode ("pop", "(%s+%d)",
+ regs8051[i].base, 8 * bank + regs8051[i].offset);
+ }
}
- if (aop)
+ if (options.useXstack)
{
- freeAsmop (NULL, aop, ic, TRUE);
+ emitcode ("mov", "%s,%s", spname, r->name);
}
- if (ic)
- {
- ic->bankSaved = 1;
- }
+ if (aop)
+ {
+ freeAsmop (NULL, aop, ic, TRUE);
+ }
}
/*-----------------------------------------------------------------*/
-/* genSend - gen code for SEND */
+/* genSend - gen code for SEND */
/*-----------------------------------------------------------------*/
static void genSend(set *sendSet)
{
- iCode *sic;
- int rb1_count = 0 ;
+ iCode *sic;
+ int bit_count = 0;
+
+ /* first we do all bit parameters */
+ for (sic = setFirstItem (sendSet); sic;
+ sic = setNextItem (sendSet))
+ {
+ if (sic->argreg > 12)
+ {
+ int bit = sic->argreg-13;
+
+ aopOp (IC_LEFT (sic), sic, FALSE);
- for (sic = setFirstItem (_G.sendSet); sic;
- sic = setNextItem (_G.sendSet)) {
- int size, offset = 0;
- aopOp (IC_LEFT (sic), sic, FALSE);
- size = AOP_SIZE (IC_LEFT (sic));
+ /* if left is a literal then
+ we know what the value is */
+ if (AOP_TYPE (IC_LEFT (sic)) == AOP_LIT)
+ {
+ if (((int) operandLitValue (IC_LEFT (sic))))
+ emitcode ("setb", "b[%d]", bit);
+ else
+ emitcode ("clr", "b[%d]", bit);
+ }
+ else if (AOP_TYPE (IC_LEFT (sic)) == AOP_CRY)
+ {
+ char *l = AOP (IC_LEFT (sic))->aopu.aop_dir;
+ if (strcmp (l, "c"))
+ emitcode ("mov", "c,%s", l);
+ emitcode ("mov", "b[%d],c", bit);
+ }
+ else
+ {
+ /* we need to or */
+ toBoolean (IC_LEFT (sic));
+ /* set C, if a >= 1 */
+ emitcode ("add", "a,#0xff");
+ emitcode ("mov", "b[%d],c", bit);
+ }
+ bit_count++;
+ BitBankUsed = 1;
+
+ freeAsmop (IC_LEFT (sic), NULL, sic, TRUE);
+ }
+ }
+
+ if (bit_count)
+ {
+ saveRegisters (setFirstItem (sendSet));
+ emitcode ("mov", "bits,b");
+ }
+
+ /* then we do all other parameters */
+ for (sic = setFirstItem (sendSet); sic;
+ sic = setNextItem (sendSet))
+ {
+ if (sic->argreg <= 12)
+ {
+ int size, offset = 0;
+ aopOp (IC_LEFT (sic), sic, FALSE);
+ size = AOP_SIZE (IC_LEFT (sic));
+
+ if (sic->argreg == 1)
+ {
+ while (size--)
+ {
+ char *l = aopGet (IC_LEFT (sic), offset, FALSE, FALSE);
+ if (strcmp (l, fReturn[offset]))
+ {
+ emitcode ("mov", "%s,%s", fReturn[offset], l);
+ }
+ offset++;
+ }
+ }
+ else
+ {
+ while (size--)
+ {
+ emitcode ("mov","%s,%s", rb1regs[sic->argreg+offset-5],
+ aopGet (IC_LEFT (sic), offset,FALSE, FALSE));
+ offset++;
+ }
+ }
+ freeAsmop (IC_LEFT (sic), NULL, sic, TRUE);
+ }
+ }
+}
- if (sic->argreg == 1) {
- while (size--) {
- char *l = aopGet (AOP (IC_LEFT (sic)), offset,
- FALSE, FALSE);
- if (strcmp (l, fReturn[offset]))
- emitcode ("mov", "%s,%s", fReturn[offset], l);
- offset++;
- }
- rb1_count = 0;
- } else {
- while (size--) {
- emitcode ("mov","b1_%d,%s",rb1_count++,
- aopGet (AOP (IC_LEFT (sic)), offset++,FALSE, FALSE));
- }
- }
- freeAsmop (IC_LEFT (sic), NULL, sic, TRUE);
+/*-----------------------------------------------------------------*/
+/* selectRegBank - emit code to select the register bank */
+/*-----------------------------------------------------------------*/
+static void
+selectRegBank (short bank, bool keepFlags)
+{
+ /* if f.e. result is in carry */
+ if (keepFlags)
+ {
+ emitcode ("anl", "psw,#0xE7");
+ if (bank)
+ emitcode ("orl", "psw,#0x%02x", (bank << 3) & 0xff);
+ }
+ else
+ {
+ emitcode ("mov", "psw,#0x%02x", (bank << 3) & 0xff);
}
}
genCall (iCode * ic)
{
sym_link *dtype;
+ sym_link *etype;
// bool restoreBank = FALSE;
bool swapBanks = FALSE;
+ bool accuse = FALSE;
+ bool accPushed = FALSE;
+ bool resultInF0 = FALSE;
+ bool assignResultGenerated = FALSE;
- D(emitcode("; genCall",""));
+ D (emitcode (";", "genCall"));
dtype = operandType (IC_LEFT (ic));
- /* if send set is not empty the assign */
+ etype = getSpec(dtype);
+ /* if send set is not empty then assign */
if (_G.sendSet)
{
- if (IFFUNC_ISREENT(dtype)) { /* need to reverse the send set */
- genSend(reverseSet(_G.sendSet));
- } else {
- genSend(_G.sendSet);
- }
-
+ if (IFFUNC_ISREENT(dtype)) { /* need to reverse the send set */
+ genSend(reverseSet(_G.sendSet));
+ } else {
+ genSend(_G.sendSet);
+ }
_G.sendSet = NULL;
}
/* if we are calling a not _naked function that is not using
the same register bank then we need to save the
destination registers on the stack */
- dtype = operandType (IC_LEFT (ic));
if (currFunc && dtype && !IFFUNC_ISNAKED(dtype) &&
(FUNC_REGBANK (currFunc->type) != FUNC_REGBANK (dtype)) &&
!IFFUNC_ISISR (dtype))
- {
+ {
swapBanks = TRUE;
- }
+ }
/* if caller saves & we have not saved then */
if (!ic->regsSaved)
saveRegisters (ic);
if (swapBanks)
- {
+ {
emitcode ("mov", "psw,#0x%02x",
((FUNC_REGBANK(dtype)) << 3) & 0xff);
- }
+ }
/* make the call */
- emitcode ("lcall", "%s", (OP_SYMBOL (IC_LEFT (ic))->rname[0] ?
- OP_SYMBOL (IC_LEFT (ic))->rname :
- OP_SYMBOL (IC_LEFT (ic))->name));
+ if (IFFUNC_ISBANKEDCALL (dtype) && !SPEC_STAT(getSpec(dtype)))
+ {
+ if (IFFUNC_CALLEESAVES(dtype))
+ {
+ werror (E_BANKED_WITH_CALLEESAVES);
+ }
+ else
+ {
+ char *l = (OP_SYMBOL (IC_LEFT (ic))->rname[0] ?
+ OP_SYMBOL (IC_LEFT (ic))->rname :
+ OP_SYMBOL (IC_LEFT (ic))->name);
+
+ emitcode ("mov", "r0,#%s", l);
+ emitcode ("mov", "r1,#(%s >> 8)", l);
+ emitcode ("mov", "r2,#(%s >> 16)", l);
+ emitcode ("lcall", "__sdcc_banked_call");
+ }
+ }
+ else
+ {
+ emitcode ("lcall", "%s", (OP_SYMBOL (IC_LEFT (ic))->rname[0] ?
+ OP_SYMBOL (IC_LEFT (ic))->rname :
+ OP_SYMBOL (IC_LEFT (ic))->name));
+ }
if (swapBanks)
- {
- emitcode ("mov", "psw,#0x%02x",
- ((FUNC_REGBANK(currFunc->type)) << 3) & 0xff);
- }
+ {
+ selectRegBank (FUNC_REGBANK(currFunc->type), IS_BIT (etype));
+ }
/* if we need assign a result value */
if ((IS_ITEMP (IC_RESULT (ic)) &&
+ !IS_BIT (OP_SYM_ETYPE (IC_RESULT (ic))) &&
(OP_SYMBOL (IC_RESULT (ic))->nRegs ||
- OP_SYMBOL (IC_RESULT (ic))->accuse ||
- OP_SYMBOL (IC_RESULT (ic))->spildir)) ||
+ OP_SYMBOL (IC_RESULT (ic))->accuse ||
+ OP_SYMBOL (IC_RESULT (ic))->spildir)) ||
IS_TRUE_SYMOP (IC_RESULT (ic)))
{
aopOp (IC_RESULT (ic), ic, FALSE);
_G.accInUse--;
- assignResultValue (IC_RESULT (ic));
+ accuse = assignResultValue (IC_RESULT (ic), IC_LEFT (ic));
+ assignResultGenerated = TRUE;
freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
}
- /* adjust the stack for parameters if
- required */
+ /* adjust the stack for parameters if required */
if (ic->parmBytes)
{
int i;
if (ic->parmBytes > 3)
- {
- emitcode ("mov", "a,%s", spname);
- emitcode ("add", "a,#0x%02x", (-ic->parmBytes) & 0xff);
- emitcode ("mov", "%s,a", spname);
- }
- else
- for (i = 0; i < ic->parmBytes; i++)
- emitcode ("dec", "%s", spname);
+ {
+ if (accuse)
+ {
+ emitcode ("push", "acc");
+ accPushed = TRUE;
+ }
+ if (IS_BIT (OP_SYM_ETYPE (IC_LEFT (ic))) &&
+ IS_BIT (OP_SYM_ETYPE (IC_RESULT (ic))) &&
+ !assignResultGenerated)
+ {
+ emitcode ("mov", "F0,c");
+ resultInF0 = TRUE;
+ }
+
+ emitcode ("mov", "a,%s", spname);
+ emitcode ("add", "a,#0x%02x", (-ic->parmBytes) & 0xff);
+ emitcode ("mov", "%s,a", spname);
+
+ /* unsaveRegisters from xstack needs acc, but */
+ /* unsaveRegisters from stack needs this popped */
+ if (accPushed && !options.useXstack)
+ {
+ emitcode ("pop", "acc");
+ accPushed = FALSE;
+ }
+ }
+ else
+ for (i = 0; i < ic->parmBytes; i++)
+ emitcode ("dec", "%s", spname);
}
- /* if we hade saved some registers then unsave them */
+ /* if we had saved some registers then unsave them */
if (ic->regsSaved && !IFFUNC_CALLEESAVES(dtype))
- unsaveRegisters (ic);
+ {
+ if (accuse && !accPushed && options.useXstack)
+ {
+ /* xstack needs acc, but doesn't touch normal stack */
+ emitcode ("push", "acc");
+ accPushed = TRUE;
+ }
+ unsaveRegisters (ic);
+ }
// /* if register bank was saved then pop them */
// if (restoreBank)
// unsaveRBank (FUNC_REGBANK (dtype), ic, FALSE);
+
+ if (IS_BIT (OP_SYM_ETYPE (IC_RESULT (ic))) && !assignResultGenerated)
+ {
+ if (resultInF0)
+ emitcode ("mov", "c,F0");
+
+ aopOp (IC_RESULT (ic), ic, FALSE);
+ assignResultValue (IC_RESULT (ic), IC_LEFT (ic));
+ freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ }
+
+ if (accPushed)
+ emitcode ("pop", "acc");
}
/*-----------------------------------------------------------------*/
-/* -10l - generates a call by pointer statement */
+/* genPcall - generates a call by pointer statement */
/*-----------------------------------------------------------------*/
static void
genPcall (iCode * ic)
{
sym_link *dtype;
+ sym_link *etype;
symbol *rlbl = newiTempLabel (NULL);
// bool restoreBank=FALSE;
bool swapBanks = FALSE;
+ bool resultInF0 = FALSE;
- D(emitcode("; genPCall",""));
+ D (emitcode (";", "genPcall"));
+ dtype = operandType (IC_LEFT (ic))->next;
+ etype = getSpec(dtype);
/* if caller saves & we have not saved then */
if (!ic->regsSaved)
saveRegisters (ic);
/* if we are calling a not _naked function that is not using
the same register bank then we need to save the
destination registers on the stack */
- dtype = operandType (IC_LEFT (ic))->next;
if (currFunc && dtype && !IFFUNC_ISNAKED(dtype) &&
(FUNC_REGBANK (currFunc->type) != FUNC_REGBANK (dtype)) &&
!IFFUNC_ISISR (dtype))
- {
+ {
// saveRBank (FUNC_REGBANK (dtype), ic, TRUE);
// restoreBank=TRUE;
swapBanks = TRUE;
// need caution message to user here
- }
-
- /* push the return address on to the stack */
- emitcode ("mov", "a,#%05d$", (rlbl->key + 100));
- emitcode ("push", "acc");
- emitcode ("mov", "a,#(%05d$ >> 8)", (rlbl->key + 100));
- emitcode ("push", "acc");
+ }
- /* now push the calling address */
- aopOp (IC_LEFT (ic), ic, FALSE);
+ if (IS_LITERAL(etype))
+ {
+ /* if send set is not empty then assign */
+ if (_G.sendSet)
+ {
+ genSend(reverseSet(_G.sendSet));
+ _G.sendSet = NULL;
+ }
- pushSide (IC_LEFT (ic), FPTRSIZE);
+ if (swapBanks)
+ {
+ emitcode ("mov", "psw,#0x%02x",
+ ((FUNC_REGBANK(dtype)) << 3) & 0xff);
+ }
- freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
+ if (IFFUNC_ISBANKEDCALL (dtype) && !SPEC_STAT(getSpec(dtype)))
+ {
+ if (IFFUNC_CALLEESAVES(dtype))
+ {
+ werror (E_BANKED_WITH_CALLEESAVES);
+ }
+ else
+ {
+ char *l = aopLiteralLong (OP_VALUE (IC_LEFT (ic)), 0, 2);
- /* if send set is not empty the assign */
- if (_G.sendSet)
- {
- genSend(reverseSet(_G.sendSet));
- _G.sendSet = NULL;
+ emitcode ("mov", "r0,#%s", l);
+ emitcode ("mov", "r1,#(%s >> 8)", l);
+ emitcode ("mov", "r2,#(%s >> 16)", l);
+ emitcode ("lcall", "__sdcc_banked_call");
+ }
+ }
+ else
+ {
+ emitcode ("lcall", "%s", aopLiteralLong (OP_VALUE (IC_LEFT (ic)), 0, 2));
+ }
}
+ else
+ {
+ if (IFFUNC_ISBANKEDCALL (dtype) && !SPEC_STAT(getSpec(dtype)))
+ {
+ if (IFFUNC_CALLEESAVES(dtype))
+ {
+ werror (E_BANKED_WITH_CALLEESAVES);
+ }
+ else
+ {
+ aopOp (IC_LEFT (ic), ic, FALSE);
- if (swapBanks)
- {
- emitcode ("mov", "psw,#0x%02x",
- ((FUNC_REGBANK(dtype)) << 3) & 0xff);
- }
+ if (!swapBanks)
+ {
+ emitcode ("mov", "ar0,%s", aopGet(IC_LEFT (ic), 0, FALSE, FALSE));
+ emitcode ("mov", "ar1,%s", aopGet(IC_LEFT (ic), 1, FALSE, FALSE));
+ emitcode ("mov", "ar2,%s", aopGet(IC_LEFT (ic), 2, FALSE, FALSE));
+ }
+ else
+ {
+ int reg = ((FUNC_REGBANK(dtype)) << 3) & 0xff;
+ emitcode ("mov", "0x%02x,%s", reg++, aopGet(IC_LEFT (ic), 0, FALSE, FALSE));
+ emitcode ("mov", "0x%02x,%s", reg++, aopGet(IC_LEFT (ic), 1, FALSE, FALSE));
+ emitcode ("mov", "0x%02x,%s", reg, aopGet(IC_LEFT (ic), 2, FALSE, FALSE));
+ }
- /* make the call */
- emitcode ("ret", "");
- emitcode ("", "%05d$:", (rlbl->key + 100));
+ freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
+
+ /* if send set is not empty then assign */
+ if (_G.sendSet)
+ {
+ genSend(reverseSet(_G.sendSet));
+ _G.sendSet = NULL;
+ }
+
+ if (swapBanks)
+ {
+ emitcode ("mov", "psw,#0x%02x",
+ ((FUNC_REGBANK(dtype)) << 3) & 0xff);
+ }
+
+ /* make the call */
+ emitcode ("lcall", "__sdcc_banked_call");
+ }
+ }
+ else
+ {
+ /* push the return address on to the stack */
+ emitcode ("mov", "a,#%05d$", (rlbl->key + 100));
+ emitcode ("push", "acc");
+ emitcode ("mov", "a,#(%05d$ >> 8)", (rlbl->key + 100));
+ emitcode ("push", "acc");
+
+ /* now push the calling address */
+ aopOp (IC_LEFT (ic), ic, FALSE);
+
+ pushSide (IC_LEFT (ic), FPTRSIZE);
+ freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
+ /* if send set is not empty the assign */
+ if (_G.sendSet)
+ {
+ genSend(reverseSet(_G.sendSet));
+ _G.sendSet = NULL;
+ }
+
+ if (swapBanks)
+ {
+ emitcode ("mov", "psw,#0x%02x",
+ ((FUNC_REGBANK(dtype)) << 3) & 0xff);
+ }
+
+ /* make the call */
+ emitcode ("ret", "");
+ emitLabel (rlbl);
+ }
+ }
if (swapBanks)
- {
- emitcode ("mov", "psw,#0x%02x",
- ((FUNC_REGBANK(currFunc->type)) << 3) & 0xff);
- }
+ {
+ selectRegBank (FUNC_REGBANK(currFunc->type), IS_BIT (etype));
+ }
/* if we need assign a result value */
if ((IS_ITEMP (IC_RESULT (ic)) &&
+ !IS_BIT (OP_SYM_ETYPE (IC_RESULT (ic))) &&
(OP_SYMBOL (IC_RESULT (ic))->nRegs ||
- OP_SYMBOL (IC_RESULT (ic))->spildir)) ||
+ OP_SYMBOL (IC_RESULT (ic))->spildir)) ||
IS_TRUE_SYMOP (IC_RESULT (ic)))
{
aopOp (IC_RESULT (ic), ic, FALSE);
_G.accInUse--;
- assignResultValue (IC_RESULT (ic));
+ assignResultValue (IC_RESULT (ic), IC_LEFT (ic));
freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
}
- /* adjust the stack for parameters if
- required */
+ /* adjust the stack for parameters if required */
if (ic->parmBytes)
{
int i;
if (ic->parmBytes > 3)
- {
- emitcode ("mov", "a,%s", spname);
- emitcode ("add", "a,#0x%02x", (-ic->parmBytes) & 0xff);
- emitcode ("mov", "%s,a", spname);
- }
- else
- for (i = 0; i < ic->parmBytes; i++)
- emitcode ("dec", "%s", spname);
+ {
+ if (IS_BIT (OP_SYM_ETYPE (IC_LEFT (ic))) &&
+ IS_BIT (OP_SYM_ETYPE (IC_RESULT (ic))))
+ {
+ emitcode ("mov", "F0,c");
+ resultInF0 = TRUE;
+ }
+ emitcode ("mov", "a,%s", spname);
+ emitcode ("add", "a,#0x%02x", (-ic->parmBytes) & 0xff);
+ emitcode ("mov", "%s,a", spname);
+ }
+ else
+ for (i = 0; i < ic->parmBytes; i++)
+ emitcode ("dec", "%s", spname);
}
// /* if register bank was saved then unsave them */
// if (restoreBank)
// unsaveRBank (FUNC_REGBANK (dtype), ic, TRUE);
- /* if we hade saved some registers then
- unsave them */
+ /* if we had saved some registers then unsave them */
if (ic->regsSaved && !IFFUNC_CALLEESAVES(dtype))
unsaveRegisters (ic);
+
+ if (IS_BIT (OP_SYM_ETYPE (IC_RESULT (ic))))
+ {
+ if (resultInF0)
+ emitcode ("mov", "c,F0");
+
+ aopOp (IC_RESULT (ic), ic, FALSE);
+ assignResultValue (IC_RESULT (ic), IC_LEFT (ic));
+ freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ }
}
/*-----------------------------------------------------------------*/
{
symbol *sym = OP_SYMBOL (IC_RESULT (ic));
if (sym->remat && !POINTER_SET (ic))
- return 1;
+ return 1;
}
return 0;
static void
genFunction (iCode * ic)
{
- symbol *sym;
+ symbol *sym = OP_SYMBOL (IC_LEFT (ic));
sym_link *ftype;
- bool switchedPSW = FALSE;
- int calleesaves_saved_register = -1;
+ bool switchedPSW = FALSE;
+ int calleesaves_saved_register = -1;
+ int stackAdjust = sym->stack;
+ int accIsFree = sym->recvSize < 4;
+ iCode *ric = (ic->next && ic->next->op == RECEIVE) ? ic->next : NULL;
+ bool fReentrant = (IFFUNC_ISREENT (sym->type) || options.stackAuto);
_G.nRegsSaved = 0;
/* create the function header */
emitcode (";", "-----------------------------------------");
- emitcode (";", " function %s", (sym = OP_SYMBOL (IC_LEFT (ic)))->name);
+ emitcode (";", " function %s", sym->name);
emitcode (";", "-----------------------------------------");
emitcode ("", "%s:", sym->rname);
ftype = operandType (IC_LEFT (ic));
+ _G.currentFunc = sym;
if (IFFUNC_ISNAKED(ftype))
{
return;
}
- /* if critical function then turn interrupts off */
- if (IFFUNC_ISCRITICAL (ftype))
- emitcode ("clr", "ea");
-
/* here we need to generate the equates for the
register bank if required */
if (FUNC_REGBANK (ftype) != rbank)
rbank = FUNC_REGBANK (ftype);
for (i = 0; i < mcs51_nRegs; i++)
- {
- if (strcmp (regs8051[i].base, "0") == 0)
- emitcode ("", "%s = 0x%02x",
- regs8051[i].dname,
- 8 * rbank + regs8051[i].offset);
- else
- emitcode ("", "%s = %s + 0x%02x",
- regs8051[i].dname,
- regs8051[i].base,
- 8 * rbank + regs8051[i].offset);
- }
+ {
+ if (regs8051[i].type != REG_BIT)
+ {
+ if (strcmp (regs8051[i].base, "0") == 0)
+ emitcode ("", "%s = 0x%02x",
+ regs8051[i].dname,
+ 8 * rbank + regs8051[i].offset);
+ else
+ emitcode ("", "%s = %s + 0x%02x",
+ regs8051[i].dname,
+ regs8051[i].base,
+ 8 * rbank + regs8051[i].offset);
+ }
+ }
}
/* if this is an interrupt service routine then
save acc, b, dpl, dph */
if (IFFUNC_ISISR (sym->type))
{
-
if (!inExcludeList ("acc"))
- emitcode ("push", "acc");
+ emitcode ("push", "acc");
if (!inExcludeList ("b"))
- emitcode ("push", "b");
+ emitcode ("push", "b");
if (!inExcludeList ("dpl"))
- emitcode ("push", "dpl");
+ emitcode ("push", "dpl");
if (!inExcludeList ("dph"))
- emitcode ("push", "dph");
+ emitcode ("push", "dph");
/* if this isr has no bank i.e. is going to
run with bank 0 , then we need to save more
registers :-) */
if (!FUNC_REGBANK (sym->type))
- {
-
- /* if this function does not call any other
- function then we can be economical and
- save only those registers that are used */
- if (!IFFUNC_HASFCALL(sym->type))
- {
- int i;
-
- /* if any registers used */
- if (sym->regsUsed)
- {
- /* save the registers used */
- for (i = 0; i < sym->regsUsed->size; i++)
- {
- if (bitVectBitValue (sym->regsUsed, i) ||
- (mcs51_ptrRegReq && (i == R0_IDX || i == R1_IDX)))
- emitcode ("push", "%s", mcs51_regWithIdx (i)->dname);
- }
- }
-
- }
- else
- {
-
- /* this function has a function call cannot
- determines register usage so we will have to push the
- entire bank */
- saveRBank (0, ic, FALSE);
- if (options.parms_in_bank1) {
- int i;
- for (i=0; i < 8 ; i++ ) {
- emitcode ("push","%s",rb1regs[i]);
- }
- }
- }
- }
- else
- {
- /* This ISR uses a non-zero bank.
- *
- * We assume that the bank is available for our
- * exclusive use.
- *
- * However, if this ISR calls a function which uses some
- * other bank, we must save that bank entirely.
- */
- unsigned long banksToSave = 0;
-
- if (IFFUNC_HASFCALL(sym->type))
- {
+ {
+ int i;
+
+ /* if this function does not call any other
+ function then we can be economical and
+ save only those registers that are used */
+ if (!IFFUNC_HASFCALL(sym->type))
+ {
+ /* if any registers used */
+ if (sym->regsUsed)
+ {
+ bool bits_pushed = FALSE;
+ /* save the registers used */
+ for (i = 0; i < sym->regsUsed->size; i++)
+ {
+ if (bitVectBitValue (sym->regsUsed, i))
+ bits_pushed = pushReg (i, bits_pushed);
+ }
+ }
+ }
+ else
+ {
+ /* this function has a function call. We cannot
+ determine register usage so we will have to push the
+ entire bank */
+ saveRBank (0, ic, FALSE);
+ if (options.parms_in_bank1) {
+ for (i=0; i < 8 ; i++ ) {
+ emitcode ("push","%s",rb1regs[i]);
+ }
+ }
+ }
+ }
+ else
+ {
+ /* This ISR uses a non-zero bank.
+ *
+ * We assume that the bank is available for our
+ * exclusive use.
+ *
+ * However, if this ISR calls a function which uses some
+ * other bank, we must save that bank entirely.
+ */
+ unsigned long banksToSave = 0;
+
+ if (IFFUNC_HASFCALL(sym->type))
+ {
#define MAX_REGISTER_BANKS 4
- iCode *i;
- int ix;
-
- for (i = ic; i; i = i->next)
- {
- if (i->op == ENDFUNCTION)
- {
- /* we got to the end OK. */
- break;
- }
-
- if (i->op == CALL)
- {
- sym_link *dtype;
-
- dtype = operandType (IC_LEFT(i));
- if (dtype
- && FUNC_REGBANK(dtype) != FUNC_REGBANK(sym->type))
- {
- /* Mark this bank for saving. */
- if (FUNC_REGBANK(dtype) >= MAX_REGISTER_BANKS)
- {
- werror(E_NO_SUCH_BANK, FUNC_REGBANK(dtype));
- }
- else
- {
- banksToSave |= (1 << FUNC_REGBANK(dtype));
- }
-
- /* And note that we don't need to do it in
- * genCall.
- */
- i->bankSaved = 1;
- }
- }
- if (i->op == PCALL)
- {
- /* This is a mess; we have no idea what
- * register bank the called function might
- * use.
- *
- * The only thing I can think of to do is
- * throw a warning and hope.
- */
- werror(W_FUNCPTR_IN_USING_ISR);
- }
- }
-
- if (banksToSave && options.useXstack)
- {
- /* Since we aren't passing it an ic,
- * saveRBank will assume r0 is available to abuse.
- *
- * So switch to our (trashable) bank now, so
- * the caller's R0 isn't trashed.
- */
- emitcode ("push", "psw");
- emitcode ("mov", "psw,#0x%02x",
- (FUNC_REGBANK (sym->type) << 3) & 0x00ff);
- switchedPSW = TRUE;
- }
-
- for (ix = 0; ix < MAX_REGISTER_BANKS; ix++)
- {
- if (banksToSave & (1 << ix))
- {
- saveRBank(ix, NULL, FALSE);
- }
- }
- }
- // TODO: this needs a closer look
- SPEC_ISR_SAVED_BANKS(currFunc->etype) = banksToSave;
- }
+ iCode *i;
+ int ix;
+
+ for (i = ic; i; i = i->next)
+ {
+ if (i->op == ENDFUNCTION)
+ {
+ /* we got to the end OK. */
+ break;
+ }
+
+ if (i->op == CALL)
+ {
+ sym_link *dtype;
+
+ dtype = operandType (IC_LEFT(i));
+ if (dtype
+ && FUNC_REGBANK(dtype) != FUNC_REGBANK(sym->type))
+ {
+ /* Mark this bank for saving. */
+ if (FUNC_REGBANK(dtype) >= MAX_REGISTER_BANKS)
+ {
+ werror(E_NO_SUCH_BANK, FUNC_REGBANK(dtype));
+ }
+ else
+ {
+ banksToSave |= (1 << FUNC_REGBANK(dtype));
+ }
+
+ /* And note that we don't need to do it in
+ * genCall.
+ */
+ i->bankSaved = 1;
+ }
+ }
+ if (i->op == PCALL)
+ {
+ /* This is a mess; we have no idea what
+ * register bank the called function might
+ * use.
+ *
+ * The only thing I can think of to do is
+ * throw a warning and hope.
+ */
+ werror(W_FUNCPTR_IN_USING_ISR);
+ }
+ }
+
+ if (banksToSave && options.useXstack)
+ {
+ /* Since we aren't passing it an ic,
+ * saveRBank will assume r0 is available to abuse.
+ *
+ * So switch to our (trashable) bank now, so
+ * the caller's R0 isn't trashed.
+ */
+ emitcode ("push", "psw");
+ emitcode ("mov", "psw,#0x%02x",
+ (FUNC_REGBANK (sym->type) << 3) & 0x00ff);
+ switchedPSW = TRUE;
+ }
+
+ for (ix = 0; ix < MAX_REGISTER_BANKS; ix++)
+ {
+ if (banksToSave & (1 << ix))
+ {
+ saveRBank(ix, NULL, FALSE);
+ }
+ }
+ }
+ // TODO: this needs a closer look
+ SPEC_ISR_SAVED_BANKS(currFunc->etype) = banksToSave;
+ }
+
+ /* Set the register bank to the desired value if nothing else */
+ /* has done so yet. */
+ if (!switchedPSW)
+ {
+ emitcode ("push", "psw");
+ emitcode ("mov", "psw,#0x%02x", (FUNC_REGBANK (sym->type) << 3) & 0x00ff);
+ }
}
else
{
+ /* This is a non-ISR function. The caller has already switched register */
+ /* banks, if necessary, so just handle the callee-saves option. */
+
/* if callee-save to be used for this function
then save the registers being used in this function */
if (IFFUNC_CALLEESAVES(sym->type))
- {
- int i;
+ {
+ int i;
- /* if any registers used */
- if (sym->regsUsed)
- {
- /* save the registers used */
- for (i = 0; i < sym->regsUsed->size; i++)
- {
- if (bitVectBitValue (sym->regsUsed, i) ||
- (mcs51_ptrRegReq && (i == R0_IDX || i == R1_IDX)))
- {
- /* remember one saved register for later usage */
- if (calleesaves_saved_register < 0)
- calleesaves_saved_register = i;
- emitcode ("push", "%s", mcs51_regWithIdx (i)->dname);
- _G.nRegsSaved++;
- }
- }
- }
- }
+ /* if any registers used */
+ if (sym->regsUsed)
+ {
+ bool bits_pushed = FALSE;
+ /* save the registers used */
+ for (i = 0; i < sym->regsUsed->size; i++)
+ {
+ if (bitVectBitValue (sym->regsUsed, i))
+ {
+ /* remember one saved register for later usage */
+ if (calleesaves_saved_register < 0)
+ calleesaves_saved_register = i;
+ bits_pushed = pushReg (i, bits_pushed);
+ _G.nRegsSaved++;
+ }
+ }
+ }
+ }
}
- /* set the register bank to the desired value */
- if (( /* FUNC_REGBANK (sym->type) || */ IFFUNC_ISISR (sym->type))
- && !switchedPSW)
+ if (fReentrant)
{
- emitcode ("push", "psw");
- emitcode ("mov", "psw,#0x%02x", (FUNC_REGBANK (sym->type) << 3) & 0x00ff);
+ if (options.useXstack)
+ {
+ if (sym->xstack || FUNC_HASSTACKPARM(sym->type))
+ {
+ emitcode ("mov", "r0,%s", spname);
+ emitcode ("inc", "%s", spname);
+ emitcode ("xch", "a,_bpx");
+ emitcode ("movx", "@r0,a");
+ emitcode ("inc", "r0");
+ emitcode ("mov", "a,r0");
+ emitcode ("xch", "a,_bpx");
+ }
+ if (sym->stack)
+ {
+ emitcode ("push", "_bp"); /* save the callers stack */
+ emitcode ("mov", "_bp,sp");
+ }
+ }
+ else
+ {
+ if (sym->stack || FUNC_HASSTACKPARM(sym->type))
+ {
+ /* set up the stack */
+ emitcode ("push", "_bp"); /* save the callers stack */
+ emitcode ("mov", "_bp,sp");
+ }
+ }
}
- if (IFFUNC_ISREENT (sym->type) || options.stackAuto)
+ /* For some cases it is worthwhile to perform a RECEIVE iCode */
+ /* before setting up the stack frame completely. */
+ if (ric && ric->argreg == 1 && IC_RESULT (ric))
{
+ symbol * rsym = OP_SYMBOL (IC_RESULT (ric));
- if (options.useXstack)
- {
- emitcode ("mov", "r0,%s", spname);
- emitcode ("mov", "a,_bp");
- emitcode ("movx", "@r0,a");
- emitcode ("inc", "%s", spname);
- }
- else
- {
- /* set up the stack */
- emitcode ("push", "_bp"); /* save the callers stack */
- }
- emitcode ("mov", "_bp,%s", spname);
+ if (rsym->isitmp)
+ {
+ if (rsym && rsym->regType == REG_CND)
+ rsym = NULL;
+ if (rsym && (rsym->accuse || rsym->ruonly))
+ rsym = NULL;
+ if (rsym && (rsym->isspilt || rsym->nRegs == 0) && rsym->usl.spillLoc)
+ rsym = rsym->usl.spillLoc;
+ }
+
+ /* If the RECEIVE operand immediately spills to the first entry on the */
+ /* stack, we can push it directly (since sp = _bp + 1 at this point) */
+ /* rather than the usual @r0/r1 machinations. */
+ if (!options.useXstack && rsym && rsym->onStack && rsym->stack == 1)
+ {
+ int ofs;
+
+ _G.current_iCode = ric;
+ D(emitcode ("; genReceive",""));
+ for (ofs=0; ofs < sym->recvSize; ofs++)
+ {
+ if (!strcmp (fReturn[ofs], "a"))
+ emitcode ("push", "acc");
+ else
+ emitcode ("push", fReturn[ofs]);
+ }
+ stackAdjust -= sym->recvSize;
+ if (stackAdjust<0)
+ {
+ assert (stackAdjust>=0);
+ stackAdjust = 0;
+ }
+ _G.current_iCode = ic;
+ ric->generated = 1;
+ accIsFree = 1;
+ }
+ /* If the RECEIVE operand is 4 registers, we can do the moves now */
+ /* to free up the accumulator. */
+ else if (rsym && rsym->nRegs && sym->recvSize == 4)
+ {
+ int ofs;
+
+ _G.current_iCode = ric;
+ D(emitcode ("; genReceive",""));
+ for (ofs=0; ofs < sym->recvSize; ofs++)
+ {
+ emitcode ("mov", "%s,%s", rsym->regs[ofs]->name, fReturn[ofs]);
+ }
+ _G.current_iCode = ic;
+ ric->generated = 1;
+ accIsFree = 1;
+ }
}
/* adjust the stack for the function */
- if (sym->stack)
+ if (stackAdjust)
{
-
- int i = sym->stack;
+ int i = stackAdjust;
if (i > 256)
- werror (W_STACK_OVERFLOW, sym->name);
-
- if (i > 3 && sym->recvSize < 4)
- {
+ werror (W_STACK_OVERFLOW, sym->name);
- emitcode ("mov", "a,sp");
- emitcode ("add", "a,#0x%02x", ((char) sym->stack & 0xff));
- emitcode ("mov", "sp,a");
-
- }
+ if (i > 3 && accIsFree)
+ {
+ emitcode ("mov", "a,sp");
+ emitcode ("add", "a,#0x%02x", ((char) sym->stack & 0xff));
+ emitcode ("mov", "sp,a");
+ }
else if (i > 5)
{
- if (IFFUNC_CALLEESAVES(sym->type))
- {
- /* if it's a callee-saves function we need a saved register */
- if (calleesaves_saved_register >= 0)
- {
- emitcode ("mov", "%s,a", mcs51_regWithIdx (calleesaves_saved_register)->dname);
- emitcode ("mov", "a,sp");
- emitcode ("add", "a,#0x%02x", ((char) sym->stack & 0xff));
- emitcode ("mov", "sp,a");
- emitcode ("mov", "a,%s", mcs51_regWithIdx (calleesaves_saved_register)->dname);
- }
- else
- /* do it the hard way */
- while (i--)
- emitcode ("inc", "sp");
- }
- else
- {
- /* not callee-saves, we can clobber r0 */
- emitcode ("mov", "r0,a");
- emitcode ("mov", "a,sp");
- emitcode ("add", "a,#0x%02x", ((char) sym->stack & 0xff));
- emitcode ("mov", "sp,a");
- emitcode ("mov", "a,r0");
- }
- }
+ /* The accumulator is not free, so we will need another register */
+ /* to clobber. No need to worry about a possible conflict with */
+ /* the above early RECEIVE optimizations since they would have */
+ /* freed the accumulator if they were generated. */
+
+ if (IFFUNC_CALLEESAVES(sym->type))
+ {
+ /* if it's a callee-saves function we need a saved register */
+ if (calleesaves_saved_register >= 0)
+ {
+ emitcode ("mov", "%s,a", REG_WITH_INDEX (calleesaves_saved_register)->dname);
+ emitcode ("mov", "a,sp");
+ emitcode ("add", "a,#0x%02x", ((char) sym->stack & 0xff));
+ emitcode ("mov", "sp,a");
+ emitcode ("mov", "a,%s", REG_WITH_INDEX (calleesaves_saved_register)->dname);
+ }
+ else
+ /* do it the hard way */
+ while (i--)
+ emitcode ("inc", "sp");
+ }
+ else
+ {
+ /* not callee-saves, we can clobber r0 */
+ emitcode ("mov", "r0,a");
+ emitcode ("mov", "a,sp");
+ emitcode ("add", "a,#0x%02x", ((char) sym->stack & 0xff));
+ emitcode ("mov", "sp,a");
+ emitcode ("mov", "a,r0");
+ }
+ }
else
- while (i--)
- emitcode ("inc", "sp");
+ while (i--)
+ emitcode ("inc", "sp");
}
if (sym->xstack)
{
+ char i = ((char) sym->xstack & 0xff);
- emitcode ("mov", "a,_spx");
- emitcode ("add", "a,#0x%02x", ((char) sym->xstack & 0xff));
- emitcode ("mov", "_spx,a");
+ if (i > 3 && accIsFree)
+ {
+ emitcode ("mov", "a,_spx");
+ emitcode ("add", "a,#0x%02x", i);
+ emitcode ("mov", "_spx,a");
+ }
+ else if (i > 5)
+ {
+ emitcode ("push", "acc");
+ emitcode ("mov", "a,_spx");
+ emitcode ("add", "a,#0x%02x", i);
+ emitcode ("mov", "_spx,a");
+ emitcode ("pop", "acc");
+ }
+ else
+ {
+ while (i--)
+ emitcode ("inc", "_spx");
+ }
}
+ /* if critical function then turn interrupts off */
+ if (IFFUNC_ISCRITICAL (ftype))
+ {
+ symbol *tlbl = newiTempLabel (NULL);
+ emitcode ("setb", "c");
+ emitcode ("jbc", "ea,%05d$", (tlbl->key + 100)); /* atomic test & clear */
+ emitcode ("clr", "c");
+ emitLabel (tlbl);
+ emitcode ("push", "psw"); /* save old ea via c in psw */
+ }
}
/*-----------------------------------------------------------------*/
static void
genEndFunction (iCode * ic)
{
- symbol *sym = OP_SYMBOL (IC_LEFT (ic));
+ symbol *sym = OP_SYMBOL (IC_LEFT (ic));
+ lineNode *lnp = lineCurr;
+ bitVect *regsUsed;
+ bitVect *regsUsedPrologue;
+ bitVect *regsUnneeded;
+ int idx;
+ _G.currentFunc = NULL;
if (IFFUNC_ISNAKED(sym->type))
{
emitcode(";", "naked function: no epilogue.");
+ if (options.debug && currFunc)
+ debugFile->writeEndFunction (currFunc, ic, 0);
return;
}
- if (IFFUNC_ISREENT (sym->type) || options.stackAuto)
+ if (IFFUNC_ISCRITICAL (sym->type))
{
- emitcode ("mov", "%s,_bp", spname);
- }
-
- /* if use external stack but some variables were
- added to the local stack then decrement the
- local stack */
- if (options.useXstack && sym->stack)
- {
- emitcode ("mov", "a,sp");
- emitcode ("add", "a,#0x%02x", ((char) -sym->stack) & 0xff);
- emitcode ("mov", "sp,a");
+ if (IS_BIT (OP_SYM_ETYPE (IC_LEFT (ic))))
+ {
+ emitcode ("rlc", "a"); /* save c in a */
+ emitcode ("pop", "psw"); /* restore ea via c in psw */
+ emitcode ("mov", "ea,c");
+ emitcode ("rrc", "a"); /* restore c from a */
+ }
+ else
+ {
+ emitcode ("pop", "psw"); /* restore ea via c in psw */
+ emitcode ("mov", "ea,c");
+ }
}
-
if ((IFFUNC_ISREENT (sym->type) || options.stackAuto))
{
if (options.useXstack)
- {
- emitcode ("mov", "r0,%s", spname);
- emitcode ("movx", "a,@r0");
- emitcode ("mov", "_bp,a");
- emitcode ("dec", "%s", spname);
- }
- else
- {
- emitcode ("pop", "_bp");
- }
+ {
+ if (sym->stack)
+ {
+ emitcode ("mov", "sp,_bp");
+ emitcode ("pop", "_bp");
+ }
+ if (sym->xstack || FUNC_HASSTACKPARM(sym->type))
+ {
+ emitcode ("xch", "a,_bpx");
+ emitcode ("mov", "r0,a");
+ emitcode ("dec", "r0");
+ emitcode ("movx", "a,@r0");
+ emitcode ("xch", "a,_bpx");
+ emitcode ("mov", "%s,r0", spname); //read before freeing stack space (interrupts)
+ }
+ }
+ else if (sym->stack || FUNC_HASSTACKPARM(sym->type))
+ {
+ if (sym->stack)
+ emitcode ("mov", "sp,_bp");
+ emitcode ("pop", "_bp");
+ }
}
/* restore the register bank */
if ( /* FUNC_REGBANK (sym->type) || */ IFFUNC_ISISR (sym->type))
{
- if (/* !FUNC_REGBANK (sym->type) || */ !IFFUNC_ISISR (sym->type)
+ if (!FUNC_REGBANK (sym->type) || !IFFUNC_ISISR (sym->type)
|| !options.useXstack)
{
/* Special case of ISR using non-zero bank with useXstack
*/
emitcode ("pop", "psw");
}
- }
+ }
+
+ if (IFFUNC_ISISR (sym->type))
+ {
+
+ /* now we need to restore the registers */
+ /* if this isr has no bank i.e. is going to
+ run with bank 0 , then we need to save more
+ registers :-) */
+ if (!FUNC_REGBANK (sym->type))
+ {
+ int i;
+ /* if this function does not call any other
+ function then we can be economical and
+ save only those registers that are used */
+ if (!IFFUNC_HASFCALL(sym->type))
+ {
+ /* if any registers used */
+ if (sym->regsUsed)
+ {
+ bool bits_popped = FALSE;
+ /* save the registers used */
+ for (i = sym->regsUsed->size; i >= 0; i--)
+ {
+ if (bitVectBitValue (sym->regsUsed, i))
+ bits_popped = popReg (i, bits_popped);
+ }
+ }
+ }
+ else
+ {
+ if (options.parms_in_bank1) {
+ for (i = 7 ; i >= 0 ; i-- ) {
+ emitcode ("pop","%s",rb1regs[i]);
+ }
+ }
+ /* this function has a function call cannot
+ determines register usage so we will have to pop the
+ entire bank */
+ unsaveRBank (0, ic, FALSE);
+ }
+ }
+ else
+ {
+ /* This ISR uses a non-zero bank.
+ *
+ * Restore any register banks saved by genFunction
+ * in reverse order.
+ */
+ unsigned savedBanks = SPEC_ISR_SAVED_BANKS(currFunc->etype);
+ int ix;
+
+ for (ix = MAX_REGISTER_BANKS - 1; ix >= 0; ix--)
+ {
+ if (savedBanks & (1 << ix))
+ {
+ unsaveRBank(ix, NULL, FALSE);
+ }
+ }
+
+ if (options.useXstack)
+ {
+ /* Restore bank AFTER calling unsaveRBank,
+ * since it can trash r0.
+ */
+ emitcode ("pop", "psw");
+ }
+ }
+
+ if (!inExcludeList ("dph"))
+ emitcode ("pop", "dph");
+ if (!inExcludeList ("dpl"))
+ emitcode ("pop", "dpl");
+ if (!inExcludeList ("b"))
+ emitcode ("pop", "b");
+ if (!inExcludeList ("acc"))
+ emitcode ("pop", "acc");
+
+ /* if debug then send end of function */
+ if (options.debug && currFunc)
+ {
+ debugFile->writeEndFunction (currFunc, ic, 1);
+ }
+
+ emitcode ("reti", "");
+ }
+ else
+ {
+ if (IFFUNC_CALLEESAVES(sym->type))
+ {
+ int i;
+
+ /* if any registers used */
+ if (sym->regsUsed)
+ {
+ /* save the registers used */
+ for (i = sym->regsUsed->size; i >= 0; i--)
+ {
+ if (bitVectBitValue (sym->regsUsed, i) ||
+ (mcs51_ptrRegReq && (i == R0_IDX || i == R1_IDX)))
+ emitcode ("pop", "%s", REG_WITH_INDEX (i)->dname);
+ }
+ }
+ else if (mcs51_ptrRegReq)
+ {
+ emitcode ("pop", "%s", REG_WITH_INDEX (R1_IDX)->dname);
+ emitcode ("pop", "%s", REG_WITH_INDEX (R0_IDX)->dname);
+ }
+
+ }
+
+ /* if debug then send end of function */
+ if (options.debug && currFunc)
+ {
+ debugFile->writeEndFunction (currFunc, ic, 1);
+ }
+
+ if (IFFUNC_ISBANKEDCALL (sym->type) && !SPEC_STAT(getSpec(sym->type)))
+ {
+ emitcode ("ljmp", "__sdcc_banked_ret");
+ }
+ else
+ {
+ emitcode ("ret", "");
+ }
+ }
- if (IFFUNC_ISISR (sym->type))
- {
+ if (!port->peep.getRegsRead || !port->peep.getRegsWritten || options.nopeep)
+ return;
- /* now we need to restore the registers */
- /* if this isr has no bank i.e. is going to
- run with bank 0 , then we need to save more
- registers :-) */
- if (!FUNC_REGBANK (sym->type))
- {
- /* if this function does not call any other
- function then we can be economical and
- save only those registers that are used */
- if (!IFFUNC_HASFCALL(sym->type))
- {
- int i;
-
- /* if any registers used */
- if (sym->regsUsed)
- {
- /* save the registers used */
- for (i = sym->regsUsed->size; i >= 0; i--)
- {
- if (bitVectBitValue (sym->regsUsed, i) ||
- (mcs51_ptrRegReq && (i == R0_IDX || i == R1_IDX)))
- emitcode ("pop", "%s", mcs51_regWithIdx (i)->dname);
- }
- }
-
- }
- else
- {
- if (options.parms_in_bank1) {
- int i;
- for (i = 7 ; i >= 0 ; i-- ) {
- emitcode ("pop","%s",rb1regs[i]);
- }
- }
- /* this function has a function call cannot
- determines register usage so we will have to pop the
- entire bank */
- unsaveRBank (0, ic, FALSE);
- }
- }
- else
- {
- /* This ISR uses a non-zero bank.
- *
- * Restore any register banks saved by genFunction
- * in reverse order.
- */
- unsigned savedBanks = SPEC_ISR_SAVED_BANKS(currFunc->etype);
- int ix;
-
- for (ix = MAX_REGISTER_BANKS - 1; ix >= 0; ix--)
- {
- if (savedBanks & (1 << ix))
- {
- unsaveRBank(ix, NULL, FALSE);
- }
- }
-
- if (options.useXstack)
- {
- /* Restore bank AFTER calling unsaveRBank,
- * since it can trash r0.
- */
- emitcode ("pop", "psw");
- }
- }
+ /* If this was an interrupt handler using bank 0 that called another */
+ /* function, then all registers must be saved; nothing to optimized. */
+ if (IFFUNC_ISISR (sym->type) && IFFUNC_HASFCALL(sym->type)
+ && !FUNC_REGBANK(sym->type))
+ return;
- if (!inExcludeList ("dph"))
- emitcode ("pop", "dph");
- if (!inExcludeList ("dpl"))
- emitcode ("pop", "dpl");
- if (!inExcludeList ("b"))
- emitcode ("pop", "b");
- if (!inExcludeList ("acc"))
- emitcode ("pop", "acc");
+ /* There are no push/pops to optimize if not callee-saves or ISR */
+ if (!(FUNC_CALLEESAVES (sym->type) || FUNC_ISISR (sym->type)))
+ return;
- if (IFFUNC_ISCRITICAL (sym->type))
- emitcode ("setb", "ea");
+ /* If there were stack parameters, we cannot optimize without also */
+ /* fixing all of the stack offsets; this is too dificult to consider. */
+ if (FUNC_HASSTACKPARM(sym->type))
+ return;
- /* if debug then send end of function */
- if (options.debug && currFunc)
- {
- _G.debugLine = 1;
- emitcode ("", "C$%s$%d$%d$%d ==.",
- FileBaseName (ic->filename), currFunc->lastLine,
- ic->level, ic->block);
- if (IS_STATIC (currFunc->etype))
- emitcode ("", "XF%s$%s$0$0 ==.", moduleName, currFunc->name);
- else
- emitcode ("", "XG$%s$0$0 ==.", currFunc->name);
- _G.debugLine = 0;
- }
+ /* Compute the registers actually used */
+ regsUsed = newBitVect (mcs51_nRegs);
+ regsUsedPrologue = newBitVect (mcs51_nRegs);
+ while (lnp)
+ {
+ if (lnp->ic && lnp->ic->op == FUNCTION)
+ regsUsedPrologue = bitVectUnion (regsUsedPrologue, port->peep.getRegsWritten(lnp));
+ else
+ regsUsed = bitVectUnion (regsUsed, port->peep.getRegsWritten(lnp));
- emitcode ("reti", "");
+ if (lnp->ic && lnp->ic->op == FUNCTION && lnp->prev
+ && lnp->prev->ic && lnp->prev->ic->op == ENDFUNCTION)
+ break;
+ if (!lnp->prev)
+ break;
+ lnp = lnp->prev;
}
- else
- {
- if (IFFUNC_ISCRITICAL (sym->type))
- emitcode ("setb", "ea");
- if (IFFUNC_CALLEESAVES(sym->type))
- {
- int i;
-
- /* if any registers used */
- if (sym->regsUsed)
- {
- /* save the registers used */
- for (i = sym->regsUsed->size; i >= 0; i--)
- {
- if (bitVectBitValue (sym->regsUsed, i) ||
- (mcs51_ptrRegReq && (i == R0_IDX || i == R1_IDX)))
- emitcode ("pop", "%s", mcs51_regWithIdx (i)->dname);
- }
- }
-
- }
+ if (bitVectBitValue (regsUsedPrologue, CND_IDX)
+ && !bitVectBitValue (regsUsed, CND_IDX))
+ {
+ regsUsed = bitVectUnion (regsUsed, regsUsedPrologue);
+ if (IFFUNC_ISISR (sym->type) && !FUNC_REGBANK (sym->type)
+ && !sym->stack && !FUNC_ISCRITICAL (sym->type))
+ bitVectUnSetBit (regsUsed, CND_IDX);
+ }
+ else
+ regsUsed = bitVectUnion (regsUsed, regsUsedPrologue);
- /* if debug then send end of function */
- if (options.debug && currFunc)
- {
- _G.debugLine = 1;
- emitcode ("", "C$%s$%d$%d$%d ==.",
- FileBaseName (ic->filename), currFunc->lastLine,
- ic->level, ic->block);
- if (IS_STATIC (currFunc->etype))
- emitcode ("", "XF%s$%s$0$0 ==.", moduleName, currFunc->name);
- else
- emitcode ("", "XG$%s$0$0 ==.", currFunc->name);
- _G.debugLine = 0;
- }
+ /* If this was an interrupt handler that called another function */
+ /* function, then assume A, B, DPH, & DPL may be modified by it. */
+ if (IFFUNC_ISISR (sym->type) && IFFUNC_HASFCALL(sym->type))
+ {
+ regsUsed = bitVectSetBit (regsUsed, DPL_IDX);
+ regsUsed = bitVectSetBit (regsUsed, DPH_IDX);
+ regsUsed = bitVectSetBit (regsUsed, B_IDX);
+ regsUsed = bitVectSetBit (regsUsed, A_IDX);
+ regsUsed = bitVectSetBit (regsUsed, CND_IDX);
+ }
- emitcode ("ret", "");
+ /* Remove the unneeded push/pops */
+ regsUnneeded = newBitVect (mcs51_nRegs);
+ while (lnp)
+ {
+ if (lnp->ic && (lnp->ic->op == FUNCTION || lnp->ic->op == ENDFUNCTION))
+ {
+ if (!strncmp(lnp->line, "push", 4))
+ {
+ idx = bitVectFirstBit (port->peep.getRegsRead(lnp));
+ if (idx>=0 && !bitVectBitValue (regsUsed, idx))
+ {
+ connectLine (lnp->prev, lnp->next);
+ regsUnneeded = bitVectSetBit (regsUnneeded, idx);
+ }
+ }
+ if (!strncmp(lnp->line, "pop", 3) || !strncmp(lnp->line, "mov", 3))
+ {
+ idx = bitVectFirstBit (port->peep.getRegsWritten(lnp));
+ if (idx>=0 && !bitVectBitValue (regsUsed, idx))
+ {
+ connectLine (lnp->prev, lnp->next);
+ regsUnneeded = bitVectSetBit (regsUnneeded, idx);
+ }
+ }
+ }
+ lnp = lnp->next;
}
+ for (idx = 0; idx < regsUnneeded->size; idx++)
+ if (bitVectBitValue (regsUnneeded, idx))
+ emitcode (";", "eliminated unneeded push/pop %s", REG_WITH_INDEX (idx)->dname);
+
+ freeBitVect (regsUnneeded);
+ freeBitVect (regsUsed);
+ freeBitVect (regsUsedPrologue);
}
/*-----------------------------------------------------------------*/
{
int size, offset = 0, pushed = 0;
- D(emitcode ("; genRet",""));
+ D (emitcode (";", "genRet"));
/* if we have no return value then
just generate the "ret" */
aopOp (IC_LEFT (ic), ic, FALSE);
size = AOP_SIZE (IC_LEFT (ic));
+ if (IS_BIT(_G.currentFunc->etype))
+ {
+ movc (aopGet (IC_LEFT (ic), 0, FALSE, FALSE));
+ size = 0;
+ }
+
while (size--)
{
char *l;
if (AOP_TYPE (IC_LEFT (ic)) == AOP_DPTR)
- {
- /* #NOCHANGE */
- l = aopGet (AOP (IC_LEFT (ic)), offset++,
- FALSE, TRUE);
- emitcode ("push", "%s", l);
- pushed++;
- }
+ {
+ /* #NOCHANGE */
+ l = aopGet (IC_LEFT (ic), offset++,
+ FALSE, TRUE);
+ emitcode ("push", "%s", l);
+ pushed++;
+ }
else
- {
- l = aopGet (AOP (IC_LEFT (ic)), offset,
- FALSE, FALSE);
- if (strcmp (fReturn[offset], l))
- emitcode ("mov", "%s,%s", fReturn[offset++], l);
- }
+ {
+ l = aopGet (IC_LEFT (ic), offset,
+ FALSE, FALSE);
+ if (strcmp (fReturn[offset], l))
+ emitcode ("mov", "%s,%s", fReturn[offset++], l);
+ }
}
- if (pushed)
+ while (pushed)
{
- while (pushed)
- {
- pushed--;
- if (strcmp (fReturn[pushed], "a"))
- emitcode ("pop", fReturn[pushed]);
- else
- emitcode ("pop", "acc");
- }
+ pushed--;
+ if (strcmp (fReturn[pushed], "a"))
+ emitcode ("pop", fReturn[pushed]);
+ else
+ emitcode ("pop", "acc");
}
freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
/* generate a jump to the return label
if the next is not the return statement */
if (!(ic->next && ic->next->op == LABEL &&
- IC_LABEL (ic->next) == returnLabel))
+ IC_LABEL (ic->next) == returnLabel))
emitcode ("ljmp", "%05d$", (returnLabel->key + 100));
count++;
/* If we have any pushes or pops, we cannot predict the distance.
- I don't like this at all, this should be dealt with in the
- back-end */
+ I don't like this at all, this should be dealt with in the
+ back-end */
if (ic->op == IPUSH || ic->op == IPOP) {
- return 0;
+ return 0;
}
if (ic->op == LABEL && IC_LABEL (ic)->key == key)
- {
- return count;
- }
+ {
+ return count;
+ }
}
return 0;
if (AOP_TYPE (IC_RIGHT (ic)) != AOP_LIT)
return FALSE;
- /* if the literal value of the right hand side
- is greater than 4 then it is not worth it */
- if ((icount = (unsigned int) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit)) > 4)
- return FALSE;
+ icount = (unsigned int) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit);
D(emitcode ("; genPlusIncr",""));
/* if increment >=16 bits in register or direct space */
if ((AOP_TYPE(IC_LEFT(ic)) == AOP_REG || AOP_TYPE(IC_LEFT(ic)) == AOP_DIR ) &&
- sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))) &&
+ sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))) &&
+ !isOperandVolatile (IC_RESULT (ic), FALSE) &&
(size > 1) &&
(icount == 1))
{
* jumps straight to that target.
*/
if (ic->next && ic->next->op == GOTO
- && (labelRange = findLabelBackwards (ic, IC_LABEL (ic->next)->key)) != 0
- && labelRange <= 10)
- {
- emitcode (";", "tail increment optimized");
- tlbl = IC_LABEL (ic->next);
- emitTlbl = 0;
- }
+ && (labelRange = findLabelBackwards (ic, IC_LABEL (ic->next)->key)) != 0
+ && labelRange <= 10)
+ {
+ D (emitcode (";", "tail increment optimized (range %d)", labelRange));
+ tlbl = IC_LABEL (ic->next);
+ emitTlbl = 0;
+ }
else
- {
- tlbl = newiTempLabel (NULL);
- emitTlbl = 1;
- }
- emitcode ("inc", "%s", aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE));
+ {
+ tlbl = newiTempLabel (NULL);
+ emitTlbl = 1;
+ }
+ emitcode ("inc", "%s", aopGet (IC_RESULT (ic), LSB, FALSE, FALSE));
if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG ||
- IS_AOP_PREG (IC_RESULT (ic)))
- emitcode ("cjne", "%s,#0x00,%05d$",
- aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE),
- tlbl->key + 100);
+ IS_AOP_PREG (IC_RESULT (ic)))
+ emitcode ("cjne", "%s,#0x00,%05d$",
+ aopGet (IC_RESULT (ic), LSB, FALSE, FALSE),
+ tlbl->key + 100);
else
- {
- emitcode ("clr", "a");
- emitcode ("cjne", "a,%s,%05d$",
- aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE),
- tlbl->key + 100);
- }
-
- emitcode ("inc", "%s", aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE));
+ {
+ emitcode ("clr", "a");
+ emitcode ("cjne", "a,%s,%05d$",
+ aopGet (IC_RESULT (ic), LSB, FALSE, FALSE),
+ tlbl->key + 100);
+ }
+
+ emitcode ("inc", "%s", aopGet (IC_RESULT (ic), MSB16, FALSE, FALSE));
if (size > 2)
- {
- if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG ||
- IS_AOP_PREG (IC_RESULT (ic)))
- emitcode ("cjne", "%s,#0x00,%05d$",
- aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE),
- tlbl->key + 100);
- else
- emitcode ("cjne", "a,%s,%05d$",
- aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE),
- tlbl->key + 100);
-
- emitcode ("inc", "%s", aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE));
- }
+ {
+ if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG ||
+ IS_AOP_PREG (IC_RESULT (ic)))
+ emitcode ("cjne", "%s,#0x00,%05d$",
+ aopGet (IC_RESULT (ic), MSB16, FALSE, FALSE),
+ tlbl->key + 100);
+ else
+ emitcode ("cjne", "a,%s,%05d$",
+ aopGet (IC_RESULT (ic), MSB16, FALSE, FALSE),
+ tlbl->key + 100);
+
+ emitcode ("inc", "%s", aopGet (IC_RESULT (ic), MSB24, FALSE, FALSE));
+ }
if (size > 3)
- {
- if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG ||
- IS_AOP_PREG (IC_RESULT (ic)))
- emitcode ("cjne", "%s,#0x00,%05d$",
- aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE),
- tlbl->key + 100);
- else
- {
- emitcode ("cjne", "a,%s,%05d$",
- aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE),
- tlbl->key + 100);
- }
- emitcode ("inc", "%s", aopGet (AOP (IC_RESULT (ic)), MSB32, FALSE, FALSE));
- }
+ {
+ if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG ||
+ IS_AOP_PREG (IC_RESULT (ic)))
+ emitcode ("cjne", "%s,#0x00,%05d$",
+ aopGet (IC_RESULT (ic), MSB24, FALSE, FALSE),
+ tlbl->key + 100);
+ else
+ {
+ emitcode ("cjne", "a,%s,%05d$",
+ aopGet (IC_RESULT (ic), MSB24, FALSE, FALSE),
+ tlbl->key + 100);
+ }
+ emitcode ("inc", "%s", aopGet (IC_RESULT (ic), MSB32, FALSE, FALSE));
+ }
if (emitTlbl)
- {
- emitcode ("", "%05d$:", tlbl->key + 100);
- }
+ {
+ emitLabel (tlbl);
+ }
+ return TRUE;
+ }
+
+ /* if result is dptr */
+ if ((AOP_TYPE (IC_RESULT (ic)) == AOP_STR) &&
+ (AOP_SIZE (IC_RESULT (ic)) == 2) &&
+ !strncmp(AOP (IC_RESULT (ic))->aopu.aop_str[0], "dpl", 4) &&
+ !strncmp(AOP (IC_RESULT (ic))->aopu.aop_str[1], "dph", 4))
+ {
+ if (aopGetUsesAcc (IC_LEFT (ic), 0))
+ return FALSE;
+
+ if (icount > 9)
+ return FALSE;
+
+ if ((AOP_TYPE (IC_LEFT (ic)) != AOP_DIR) && (icount > 5))
+ return FALSE;
+
+ aopPut (IC_RESULT (ic), aopGet (IC_LEFT (ic), 0, FALSE, FALSE), 0);
+ aopPut (IC_RESULT (ic), aopGet (IC_LEFT (ic), 1, FALSE, FALSE), 1);
+ while (icount--)
+ emitcode ("inc", "dptr");
+
return TRUE;
}
+ /* if the literal value of the right hand side
+ is greater than 4 then it is not worth it */
+ if (icount > 4)
+ return FALSE;
+
/* if the sizes are greater than 1 then we cannot */
if (AOP_SIZE (IC_RESULT (ic)) > 1 ||
AOP_SIZE (IC_LEFT (ic)) > 1)
same */
if (sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))))
{
-
if (icount > 3)
- {
- MOVA (aopGet (AOP (IC_LEFT (ic)), 0, FALSE, FALSE));
- emitcode ("add", "a,#0x%02x", ((char) icount) & 0xff);
- aopPut (AOP (IC_RESULT (ic)), "a", 0, isOperandVolatile (IC_RESULT (ic), FALSE));
- }
+ {
+ MOVA (aopGet (IC_LEFT (ic), 0, FALSE, FALSE));
+ emitcode ("add", "a,#0x%02x", ((char) icount) & 0xff);
+ aopPut (IC_RESULT (ic), "a", 0);
+ }
else
- {
-
- while (icount--)
- emitcode ("inc", "%s", aopGet (AOP (IC_LEFT (ic)), 0, FALSE, FALSE));
- }
+ {
+ while (icount--)
+ {
+ emitcode ("inc", "%s", aopGet (IC_LEFT (ic), 0, FALSE, FALSE));
+ }
+ }
return TRUE;
}
/* if the result is a bit */
if (AOP_TYPE (result) == AOP_CRY)
{
- aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", 0);
}
else
{
emitcode ("jz", "%05d$", tlbl->key + 100);
emitcode ("mov", "a,%s", one);
- emitcode ("", "%05d$:", tlbl->key + 100);
+ emitLabel (tlbl);
outAcc (result);
}
}
static void
genPlusBits (iCode * ic)
{
- D(emitcode ("; genPlusBits",""));
+ D (emitcode (";", "genPlusBits"));
if (AOP_TYPE (IC_RESULT (ic)) == AOP_CRY)
{
emitcode ("mov", "c,%s", AOP (IC_LEFT (ic))->aopu.aop_dir);
emitcode ("jnb", "%s,%05d$", AOP (IC_RIGHT (ic))->aopu.aop_dir, (lbl->key + 100));
emitcode ("cpl", "c");
- emitcode ("", "%05d$:", (lbl->key + 100));
+ emitLabel (lbl);
outBitC (IC_RESULT (ic));
}
else
emitcode ("mov", "c,%s", AOP (IC_LEFT (ic))->aopu.aop_dir);
emitcode ("rlc", "a");
emitcode ("mov", "c,%s", AOP (IC_RIGHT (ic))->aopu.aop_dir);
- emitcode ("addc", "a,#0x00");
+ emitcode ("addc", "a,%s", zero);
outAcc (IC_RESULT (ic));
}
}
if (AOP_SIZE (IC_RESULT (ic)) == 3 &&
AOP_SIZE (IC_LEFT (ic)) == 3 &&
!sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic))))
- aopPut (AOP (IC_RESULT (ic)),
- aopGet (AOP (IC_LEFT (ic)), 2, FALSE, FALSE),
- 2,
- isOperandVolatile (IC_RESULT (ic), FALSE));
+ aopPut (IC_RESULT (ic),
+ aopGet (IC_LEFT (ic)), 2, FALSE, FALSE),
+ 2);
if (AOP_SIZE (IC_RESULT (ic)) == 3 &&
AOP_SIZE (IC_RIGHT (ic)) == 3 &&
!sameRegs (AOP (IC_RESULT (ic)), AOP (IC_RIGHT (ic))))
- aopPut (AOP (IC_RESULT (ic)),
- aopGet (AOP (IC_RIGHT (ic)), 2, FALSE, FALSE),
- 2,
- isOperandVolatile (IC_RESULT (ic), FALSE));
+ aopPut (IC_RESULT (ic),
+ aopGet (IC_RIGHT (ic)), 2, FALSE, FALSE),
+ 2);
if (AOP_SIZE (IC_RESULT (ic)) == 3 &&
AOP_SIZE (IC_LEFT (ic)) < 3 &&
!sameRegs (AOP (IC_RESULT (ic)), AOP (IC_RIGHT (ic))))
{
char buffer[5];
- sprintf (buffer, "#%d", pointerCode (getSpec (operandType (IC_LEFT (ic)))));
- aopPut (AOP (IC_RESULT (ic)), buffer, 2, isOperandVolatile (IC_RESULT (ic), FALSE));
+ sprintf (buffer, "#%d", pointerTypeToGPByte (pointerCode (getSpec (operandType (IC_LEFT (ic)))), NULL, NULL));
+ aopPut (IC_RESULT (ic), buffer, 2);
}
}
#else
opIsGptr (IC_LEFT (ic)) &&
!sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic))))
{
- aopPut (AOP (IC_RESULT (ic)),
- aopGet (AOP (IC_LEFT (ic)), GPTRSIZE - 1, FALSE, FALSE),
- GPTRSIZE - 1,
- isOperandVolatile (IC_RESULT (ic), FALSE));
+ aopPut (IC_RESULT (ic),
+ aopGet (IC_LEFT (ic), GPTRSIZE - 1, FALSE, FALSE),
+ GPTRSIZE - 1);
}
if (opIsGptr (IC_RESULT (ic)) &&
opIsGptr (IC_RIGHT (ic)) &&
!sameRegs (AOP (IC_RESULT (ic)), AOP (IC_RIGHT (ic))))
{
- aopPut (AOP (IC_RESULT (ic)),
- aopGet (AOP (IC_RIGHT (ic)), GPTRSIZE - 1, FALSE, FALSE),
- GPTRSIZE - 1,
- isOperandVolatile (IC_RESULT (ic), FALSE));
+ aopPut (IC_RESULT (ic),
+ aopGet (IC_RIGHT (ic), GPTRSIZE - 1, FALSE, FALSE),
+ GPTRSIZE - 1);
}
if (opIsGptr (IC_RESULT (ic)) &&
!sameRegs (AOP (IC_RESULT (ic)), AOP (IC_RIGHT (ic))))
{
char buffer[5];
- sprintf (buffer, "#%d", pointerCode (getSpec (operandType (IC_LEFT (ic)))));
- aopPut (AOP (IC_RESULT (ic)), buffer, GPTRSIZE - 1, isOperandVolatile (IC_RESULT (ic), FALSE));
+ SNPRINTF (buffer, sizeof(buffer),
+ "#%d", pointerTypeToGPByte (pointerCode (getSpec (operandType (IC_LEFT (ic)))), NULL, NULL));
+ aopPut (IC_RESULT (ic), buffer, GPTRSIZE - 1);
}
}
#endif
genPlus (iCode * ic)
{
int size, offset = 0;
- char *add;
- asmop *leftOp, *rightOp;
+ int skip_bytes = 0;
+ char *add = "add";
+ bool swappedLR = FALSE;
+ operand *leftOp, *rightOp;
+ operand * op;
- /* special cases :- */
+ D (emitcode (";", "genPlus"));
- D(emitcode ("; genPlus",""));
+ /* special cases :- */
aopOp (IC_LEFT (ic), ic, FALSE);
aopOp (IC_RIGHT (ic), ic, FALSE);
operand *t = IC_RIGHT (ic);
IC_RIGHT (ic) = IC_LEFT (ic);
IC_LEFT (ic) = t;
+ swappedLR = TRUE;
}
/* if both left & right are in bit
emitcode ("mov", "c,%s", AOP (IC_LEFT (ic))->aopu.aop_dir);
/* if result in bit space */
if (AOP_TYPE (IC_RESULT (ic)) == AOP_CRY)
- {
- if ((unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit) != 0L)
- emitcode ("cpl", "c");
- outBitC (IC_RESULT (ic));
- }
+ {
+ if ((unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit) != 0L)
+ emitcode ("cpl", "c");
+ outBitC (IC_RESULT (ic));
+ }
else
- {
- size = getDataSize (IC_RESULT (ic));
- while (size--)
- {
- MOVA (aopGet (AOP (IC_RIGHT (ic)), offset, FALSE, FALSE));
- emitcode ("addc", "a,#00");
- aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
- }
- }
+ {
+ size = getDataSize (IC_RESULT (ic));
+ while (size--)
+ {
+ MOVA (aopGet (IC_RIGHT (ic), offset, FALSE, FALSE));
+ emitcode ("addc", "a,%s", zero);
+ aopPut (IC_RESULT (ic), "a", offset++);
+ }
+ }
goto release;
}
goto release;
size = getDataSize (IC_RESULT (ic));
+ leftOp = IC_LEFT(ic);
+ rightOp = IC_RIGHT(ic);
+ op = IC_LEFT(ic);
+
+ /* if this is an add for an array access
+ at a 256 byte boundary */
+ if ( 2 == size
+ && AOP_TYPE (op) == AOP_IMMD
+ && IS_SYMOP (op)
+ && IS_SPEC (OP_SYM_ETYPE (op))
+ && SPEC_ABSA (OP_SYM_ETYPE (op))
+ && (SPEC_ADDR (OP_SYM_ETYPE (op)) & 0xff) == 0
+ )
+ {
+ D(emitcode ("; genPlus aligned array",""));
+ aopPut (IC_RESULT (ic),
+ aopGet (rightOp, 0, FALSE, FALSE),
+ 0);
+
+ if( 1 == getDataSize (IC_RIGHT (ic)) )
+ {
+ aopPut (IC_RESULT (ic),
+ aopGet (leftOp, 1, FALSE, FALSE),
+ 1);
+ }
+ else
+ {
+ MOVA (aopGet (IC_LEFT (ic), 1, FALSE, FALSE));
+ emitcode ("add", "a,%s", aopGet (rightOp, 1, FALSE, FALSE));
+ aopPut (IC_RESULT (ic), "a", 1);
+ }
+ goto release;
+ }
- leftOp = AOP(IC_LEFT(ic));
- rightOp = AOP(IC_RIGHT(ic));
- add = "add";
+ /* if the lower bytes of a literal are zero skip the addition */
+ if (AOP_TYPE (IC_RIGHT (ic)) == AOP_LIT )
+ {
+ while ((0 == ((unsigned int) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit) & (0xff << skip_bytes*8))) &&
+ (skip_bytes+1 < size))
+ {
+ skip_bytes++;
+ }
+ if (skip_bytes)
+ D(emitcode ("; genPlus shortcut",""));
+ }
while (size--)
{
- if (aopGetUsesAcc (leftOp, offset) && aopGetUsesAcc (rightOp, offset))
- {
- emitcode("mov", "b,a");
- MOVA (aopGet (leftOp, offset, FALSE, TRUE));
- emitcode("xch", "a,b");
- MOVA (aopGet (rightOp, offset, FALSE, TRUE));
- emitcode (add, "a,b");
- }
- else if (aopGetUsesAcc (leftOp, offset))
- {
- MOVA (aopGet (leftOp, offset, FALSE, TRUE));
- emitcode (add, "a,%s", aopGet (rightOp, offset, FALSE, TRUE));
- }
+ if( offset >= skip_bytes )
+ {
+ if (aopGetUsesAcc (leftOp, offset) && aopGetUsesAcc (rightOp, offset))
+ {
+ bool pushedB;
+ MOVA (aopGet (leftOp, offset, FALSE, TRUE));
+ pushedB = pushB ();
+ emitcode("xch", "a,b");
+ MOVA (aopGet (rightOp, offset, FALSE, TRUE));
+ emitcode (add, "a,b");
+ popB (pushedB);
+ }
+ else if (aopGetUsesAcc (leftOp, offset))
+ {
+ MOVA (aopGet (leftOp, offset, FALSE, TRUE));
+ emitcode (add, "a,%s", aopGet (rightOp, offset, FALSE, TRUE));
+ }
+ else
+ {
+ MOVA (aopGet (rightOp, offset, FALSE, TRUE));
+ emitcode (add, "a,%s", aopGet (leftOp, offset, FALSE, TRUE));
+ }
+ aopPut (IC_RESULT (ic), "a", offset);
+ add = "addc"; /* further adds must propagate carry */
+ }
else
- {
- MOVA (aopGet (rightOp, offset, FALSE, TRUE));
- emitcode (add, "a,%s", aopGet (leftOp, offset, FALSE, TRUE));
- }
- aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
- add = "addc"; /* further adds must propagate carry */
+ {
+ if( !sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))) ||
+ isOperandVolatile (IC_RESULT (ic), FALSE))
+ {
+ /* just move */
+ aopPut (IC_RESULT (ic),
+ aopGet (leftOp, offset, FALSE, FALSE),
+ offset);
+ }
+ }
+ offset++;
}
adjustArithmeticResult (ic);
release:
- freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (IC_RIGHT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ if (!swappedLR)
+ {
+ freeAsmop (IC_RIGHT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ }
+ else
+ {
+ freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (IC_RIGHT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ }
}
/*-----------------------------------------------------------------*/
-/* genMinusDec :- does subtraction with deccrement if possible */
+/* genMinusDec :- does subtraction with decrement if possible */
/*-----------------------------------------------------------------*/
static bool
genMinusDec (iCode * ic)
if ((icount = (unsigned int) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit)) > 4)
return FALSE;
- D(emitcode ("; genMinusDec",""));
+ D (emitcode (";", "genMinusDec"));
/* if decrement >=16 bits in register or direct space */
if ((AOP_TYPE(IC_LEFT(ic)) == AOP_REG || AOP_TYPE(IC_LEFT(ic)) == AOP_DIR) &&
* jumps straight to that target.
*/
if (ic->next && ic->next->op == GOTO
- && (labelRange = findLabelBackwards (ic, IC_LABEL (ic->next)->key)) != 0
- && labelRange <= 10)
- {
- emitcode (";", "tail decrement optimized");
- tlbl = IC_LABEL (ic->next);
- emitTlbl = 0;
- }
+ && (labelRange = findLabelBackwards (ic, IC_LABEL (ic->next)->key)) != 0
+ && labelRange <= 10)
+ {
+ D (emitcode (";", "tail decrement optimized (range %d)", labelRange));
+ tlbl = IC_LABEL (ic->next);
+ emitTlbl = 0;
+ }
else
- {
- tlbl = newiTempLabel (NULL);
- emitTlbl = 1;
- }
+ {
+ tlbl = newiTempLabel (NULL);
+ emitTlbl = 1;
+ }
- emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE));
+ emitcode ("dec", "%s", aopGet (IC_RESULT (ic), LSB, FALSE, FALSE));
if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG ||
- IS_AOP_PREG (IC_RESULT (ic)))
- emitcode ("cjne", "%s,#0xff,%05d$"
- ,aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE)
- ,tlbl->key + 100);
+ IS_AOP_PREG (IC_RESULT (ic)))
+ emitcode ("cjne", "%s,#0xff,%05d$"
+ ,aopGet (IC_RESULT (ic), LSB, FALSE, FALSE)
+ ,tlbl->key + 100);
else
- {
- emitcode ("mov", "a,#0xff");
- emitcode ("cjne", "a,%s,%05d$"
- ,aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE)
- ,tlbl->key + 100);
- }
- emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE));
+ {
+ emitcode ("mov", "a,#0xff");
+ emitcode ("cjne", "a,%s,%05d$"
+ ,aopGet (IC_RESULT (ic), LSB, FALSE, FALSE)
+ ,tlbl->key + 100);
+ }
+ emitcode ("dec", "%s", aopGet (IC_RESULT (ic), MSB16, FALSE, FALSE));
if (size > 2)
- {
- if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG ||
- IS_AOP_PREG (IC_RESULT (ic)))
- emitcode ("cjne", "%s,#0xff,%05d$"
- ,aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE)
- ,tlbl->key + 100);
- else
- {
- emitcode ("cjne", "a,%s,%05d$"
- ,aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE)
- ,tlbl->key + 100);
- }
- emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE));
- }
+ {
+ if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG ||
+ IS_AOP_PREG (IC_RESULT (ic)))
+ emitcode ("cjne", "%s,#0xff,%05d$"
+ ,aopGet (IC_RESULT (ic), MSB16, FALSE, FALSE)
+ ,tlbl->key + 100);
+ else
+ {
+ emitcode ("cjne", "a,%s,%05d$"
+ ,aopGet (IC_RESULT (ic), MSB16, FALSE, FALSE)
+ ,tlbl->key + 100);
+ }
+ emitcode ("dec", "%s", aopGet (IC_RESULT (ic), MSB24, FALSE, FALSE));
+ }
if (size > 3)
- {
- if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG ||
- IS_AOP_PREG (IC_RESULT (ic)))
- emitcode ("cjne", "%s,#0xff,%05d$"
- ,aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE)
- ,tlbl->key + 100);
- else
- {
- emitcode ("cjne", "a,%s,%05d$"
- ,aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE)
- ,tlbl->key + 100);
- }
- emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), MSB32, FALSE, FALSE));
- }
+ {
+ if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG ||
+ IS_AOP_PREG (IC_RESULT (ic)))
+ emitcode ("cjne", "%s,#0xff,%05d$"
+ ,aopGet (IC_RESULT (ic), MSB24, FALSE, FALSE)
+ ,tlbl->key + 100);
+ else
+ {
+ emitcode ("cjne", "a,%s,%05d$"
+ ,aopGet (IC_RESULT (ic), MSB24, FALSE, FALSE)
+ ,tlbl->key + 100);
+ }
+ emitcode ("dec", "%s", aopGet (IC_RESULT (ic), MSB32, FALSE, FALSE));
+ }
if (emitTlbl)
- {
- emitcode ("", "%05d$:", tlbl->key + 100);
- }
+ {
+ emitLabel (tlbl);
+ }
return TRUE;
}
same */
if (sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))))
{
+ char *l;
+
+ if (aopGetUsesAcc (IC_LEFT (ic), 0))
+ {
+ MOVA (aopGet (IC_RESULT (ic), 0, FALSE, FALSE));
+ l = "a";
+ }
+ else
+ {
+ l = aopGet (IC_RESULT (ic), 0, FALSE, FALSE);
+ }
while (icount--)
- emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), 0, FALSE, FALSE));
+ {
+ emitcode ("dec", "%s", l);
+ }
+
+ if (AOP_NEEDSACC (IC_RESULT (ic)))
+ aopPut (IC_RESULT (ic), "a", 0);
return TRUE;
}
if (size > 0)
{
if (sign)
- {
- emitcode ("rlc", "a");
- emitcode ("subb", "a,acc");
- while (size--)
- aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
- }
+ {
+ emitcode ("rlc", "a");
+ emitcode ("subb", "a,acc");
+ while (size--)
+ {
+ aopPut (result, "a", offset++);
+ }
+ }
else
- while (size--)
- aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE));
+ {
+ while (size--)
+ {
+ aopPut (result, zero, offset++);
+ }
+ }
}
}
{
symbol *lbl = newiTempLabel (NULL);
- D(emitcode ("; genMinusBits",""));
+ D (emitcode (";", "genMinusBits"));
if (AOP_TYPE (IC_RESULT (ic)) == AOP_CRY)
{
emitcode ("mov", "c,%s", AOP (IC_LEFT (ic))->aopu.aop_dir);
emitcode ("jnb", "%s,%05d$", AOP (IC_RIGHT (ic))->aopu.aop_dir, (lbl->key + 100));
emitcode ("cpl", "c");
- emitcode ("", "%05d$:", (lbl->key + 100));
+ emitLabel (lbl);
outBitC (IC_RESULT (ic));
}
else
emitcode ("subb", "a,acc");
emitcode ("jnb", "%s,%05d$", AOP (IC_LEFT (ic))->aopu.aop_dir, (lbl->key + 100));
emitcode ("inc", "a");
- emitcode ("", "%05d$:", (lbl->key + 100));
- aopPut (AOP (IC_RESULT (ic)), "a", 0, isOperandVolatile (IC_RESULT (ic), FALSE));
+ emitLabel (lbl);
+ aopPut (IC_RESULT (ic), "a", 0);
addSign (IC_RESULT (ic), MSB16, SPEC_USIGN (getSpec (operandType (IC_RESULT (ic)))));
}
}
{
int size, offset = 0;
- D(emitcode ("; genMinus",""));
+ D (emitcode (";", "genMinus"));
aopOp (IC_LEFT (ic), ic, FALSE);
aopOp (IC_RIGHT (ic), ic, FALSE);
if (AOP_TYPE (IC_RIGHT (ic)) == AOP_LIT)
{
unsigned long lit = 0L;
+ bool useCarry = FALSE;
lit = (unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit);
lit = -(long) lit;
while (size--)
- {
- MOVA (aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE));
- /* first add without previous c */
- if (!offset) {
- if (!size && lit== (unsigned long) -1) {
- emitcode ("dec", "a");
- } else {
- emitcode ("add", "a,#0x%02x",
- (unsigned int) (lit & 0x0FFL));
- }
- } else {
- emitcode ("addc", "a,#0x%02x",
- (unsigned int) ((lit >> (offset * 8)) & 0x0FFL));
- }
- aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
- }
+ {
+ if (useCarry || ((lit >> (offset * 8)) & 0x0FFL))
+ {
+ MOVA (aopGet (IC_LEFT (ic), offset, FALSE, FALSE));
+ if (!offset && !size && lit== (unsigned long) -1)
+ {
+ emitcode ("dec", "a");
+ }
+ else if (!useCarry)
+ {
+ /* first add without previous c */
+ emitcode ("add", "a,#0x%02x",
+ (unsigned int) ((lit >> (offset * 8)) & 0x0FFL));
+ useCarry = TRUE;
+ }
+ else
+ {
+ emitcode ("addc", "a,#0x%02x",
+ (unsigned int) ((lit >> (offset * 8)) & 0x0FFL));
+ }
+ aopPut (IC_RESULT (ic), "a", offset++);
+ }
+ else
+ {
+ /* no need to add zeroes */
+ if (!sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic))))
+ {
+ aopPut (IC_RESULT (ic), aopGet (IC_LEFT (ic), offset, FALSE, FALSE),
+ offset);
+ }
+ offset++;
+ }
+ }
}
else
{
- asmop *leftOp, *rightOp;
+ operand *leftOp, *rightOp;
- leftOp = AOP(IC_LEFT(ic));
- rightOp = AOP(IC_RIGHT(ic));
+ leftOp = IC_LEFT(ic);
+ rightOp = IC_RIGHT(ic);
while (size--)
- {
- if (aopGetUsesAcc(rightOp, offset)) {
- wassertl(!aopGetUsesAcc(leftOp, offset), "accumulator clash");
- MOVA (aopGet(rightOp, offset, FALSE, TRUE));
- if (offset == 0) {
- emitcode( "setb", "c");
- }
- emitcode("subb", "a,%s", aopGet(leftOp, offset, FALSE, TRUE));
- emitcode("cpl", "a");
- } else {
- MOVA (aopGet (leftOp, offset, FALSE, FALSE));
- if (offset == 0)
- CLRC;
- emitcode ("subb", "a,%s",
- aopGet(rightOp, offset, FALSE, TRUE));
- }
-
- aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
- }
- }
-
-
+ {
+ if (aopGetUsesAcc(rightOp, offset)) {
+ if (aopGetUsesAcc(leftOp, offset)) {
+ bool pushedB;
+
+ MOVA (aopGet (rightOp, offset, FALSE, FALSE));
+ pushedB = pushB ();
+ emitcode ("mov", "b,a");
+ if (offset == 0)
+ CLRC;
+ MOVA (aopGet (leftOp, offset, FALSE, FALSE));
+ emitcode ("subb", "a,b");
+ popB (pushedB);
+ } else {
+ /* reverse subtraction with 2's complement */
+ if (offset == 0)
+ emitcode( "setb", "c");
+ else
+ emitcode( "cpl", "c");
+ wassertl(!aopGetUsesAcc(leftOp, offset), "accumulator clash");
+ MOVA (aopGet(rightOp, offset, FALSE, TRUE));
+ emitcode("subb", "a,%s", aopGet(leftOp, offset, FALSE, TRUE));
+ emitcode("cpl", "a");
+ if (size) /* skip if last byte */
+ emitcode( "cpl", "c");
+ }
+ } else {
+ MOVA (aopGet (leftOp, offset, FALSE, FALSE));
+ if (offset == 0)
+ CLRC;
+ emitcode ("subb", "a,%s",
+ aopGet(rightOp, offset, FALSE, TRUE));
+ }
+
+ aopPut (IC_RESULT (ic), "a", offset++);
+ }
+ }
+
adjustArithmeticResult (ic);
release:
- freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (IC_RIGHT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ freeAsmop (IC_RIGHT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
}
/*-----------------------------------------------------------------*/
static void
genMultbits (operand * left,
- operand * right,
- operand * result)
+ operand * right,
+ operand * result)
+{
+ D (emitcode (";", "genMultbits"));
+
+ emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
+ emitcode ("anl", "c,%s", AOP (right)->aopu.aop_dir);
+ outBitC (result);
+}
+
+/*-----------------------------------------------------------------*/
+/* genMultOneByte : 8*8=8/16 bit multiplication */
+/*-----------------------------------------------------------------*/
+static void
+genMultOneByte (operand * left,
+ operand * right,
+ operand * result)
{
- D(emitcode ("; genMultbits",""));
+ symbol *lbl;
+ int size = AOP_SIZE (result);
+ bool runtimeSign, compiletimeSign;
+ bool lUnsigned, rUnsigned, pushedB;
+
+ D (emitcode (";", "genMultOneByte"));
+
+ if (size < 1 || size > 2)
+ {
+ /* this should never happen */
+ fprintf (stderr, "size!=1||2 (%d) in %s at line:%d \n",
+ AOP_SIZE(result), __FILE__, lineno);
+ exit (1);
+ }
+
+ /* (if two literals: the value is computed before) */
+ /* if one literal, literal on the right */
+ if (AOP_TYPE (left) == AOP_LIT)
+ {
+ operand *t = right;
+ right = left;
+ left = t;
+ /* emitcode (";", "swapped left and right"); */
+ }
+ /* if no literal, unsigned on the right: shorter code */
+ if ( AOP_TYPE (right) != AOP_LIT
+ && SPEC_USIGN (getSpec (operandType (left))))
+ {
+ operand *t = right;
+ right = left;
+ left = t;
+ }
+
+ lUnsigned = SPEC_USIGN (getSpec (operandType (left)));
+ rUnsigned = SPEC_USIGN (getSpec (operandType (right)));
+
+ pushedB = pushB ();
+
+ if (size == 1 /* no, this is not a bug; with a 1 byte result there's
+ no need to take care about the signedness! */
+ || (lUnsigned && rUnsigned))
+ {
+ /* just an unsigned 8 * 8 = 8 multiply
+ or 8u * 8u = 16u */
+ /* emitcode (";","unsigned"); */
+ /* TODO: check for accumulator clash between left & right aops? */
+
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ /* moving to accumulator first helps peepholes */
+ MOVA (aopGet (left, 0, FALSE, FALSE));
+ emitcode ("mov", "b,%s", aopGet (right, 0, FALSE, FALSE));
+ }
+ else
+ {
+ emitcode ("mov", "b,%s", aopGet (right, 0, FALSE, FALSE));
+ MOVA (aopGet (left, 0, FALSE, FALSE));
+ }
+
+ emitcode ("mul", "ab");
+ aopPut (result, "a", 0);
+ if (size == 2)
+ aopPut (result, "b", 1);
+
+ popB (pushedB);
+ return;
+ }
+
+ /* we have to do a signed multiply */
+ /* emitcode (";", "signed"); */
+
+ /* now sign adjust for both left & right */
- emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
- emitcode ("anl", "c,%s", AOP (right)->aopu.aop_dir);
- outBitC (result);
-}
+ /* let's see what's needed: */
+ /* apply negative sign during runtime */
+ runtimeSign = FALSE;
+ /* negative sign from literals */
+ compiletimeSign = FALSE;
+ if (!lUnsigned)
+ {
+ if (AOP_TYPE(left) == AOP_LIT)
+ {
+ /* signed literal */
+ signed char val = (char) floatFromVal (AOP (left)->aopu.aop_lit);
+ if (val < 0)
+ compiletimeSign = TRUE;
+ }
+ else
+ /* signed but not literal */
+ runtimeSign = TRUE;
+ }
-/*-----------------------------------------------------------------*/
-/* genMultOneByte : 8*8=8/16 bit multiplication */
-/*-----------------------------------------------------------------*/
-static void
-genMultOneByte (operand * left,
- operand * right,
- operand * result)
-{
- sym_link *opetype = operandType (result);
- symbol *lbl;
- int size=AOP_SIZE(result);
+ if (!rUnsigned)
+ {
+ if (AOP_TYPE(right) == AOP_LIT)
+ {
+ /* signed literal */
+ signed char val = (char) floatFromVal (AOP (right)->aopu.aop_lit);
+ if (val < 0)
+ compiletimeSign ^= TRUE;
+ }
+ else
+ /* signed but not literal */
+ runtimeSign = TRUE;
+ }
- D(emitcode ("; genMultOneByte",""));
+ /* initialize F0, which stores the runtime sign */
+ if (runtimeSign)
+ {
+ if (compiletimeSign)
+ emitcode ("setb", "F0"); /* set sign flag */
+ else
+ emitcode ("clr", "F0"); /* reset sign flag */
+ }
- if (size<1 || size>2) {
- // this should never happen
- fprintf (stderr, "size!=1||2 (%d) in %s at line:%d \n",
- AOP_SIZE(result), __FILE__, lineno);
- exit (1);
- }
+ /* save the signs of the operands */
+ if (AOP_TYPE(right) == AOP_LIT)
+ {
+ signed char val = (char) floatFromVal (AOP (right)->aopu.aop_lit);
- /* (if two literals: the value is computed before) */
- /* if one literal, literal on the right */
- if (AOP_TYPE (left) == AOP_LIT)
+ if (!rUnsigned && val < 0)
+ emitcode ("mov", "b,#0x%02x", -val);
+ else
+ emitcode ("mov", "b,#0x%02x", (unsigned char) val);
+ }
+ else /* ! literal */
{
- operand *t = right;
- right = left;
- left = t;
- //emitcode (";", "swapped left and right");
- }
-
- if (SPEC_USIGN(opetype)
- // ignore the sign of left and right, what else can we do?
- || (SPEC_USIGN(operandType(left)) &&
- SPEC_USIGN(operandType(right)))) {
- // just an unsigned 8*8=8/16 multiply
- //emitcode (";","unsigned");
- // TODO: check for accumulator clash between left & right aops?
- emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE));
- MOVA (aopGet (AOP (left), 0, FALSE, FALSE));
- emitcode ("mul", "ab");
- aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
- if (size==2) {
- aopPut (AOP (result), "b", 1, isOperandVolatile (result, FALSE));
+ if (rUnsigned) /* emitcode (";", "signed"); */
+ emitcode ("mov", "b,%s", aopGet (right, 0, FALSE, FALSE));
+ else
+ {
+ MOVA (aopGet (right, 0, FALSE, FALSE));
+ lbl = newiTempLabel (NULL);
+ emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100));
+ emitcode ("cpl", "F0"); /* complement sign flag */
+ emitcode ("cpl", "a"); /* 2's complement */
+ emitcode ("inc", "a");
+ emitLabel (lbl);
+ emitcode ("mov", "b,a");
+ }
}
- return;
- }
- // we have to do a signed multiply
-
- //emitcode (";", "signed");
- emitcode ("clr", "F0"); // reset sign flag
- MOVA (aopGet (AOP (left), 0, FALSE, FALSE));
-
- lbl=newiTempLabel(NULL);
- emitcode ("jnb", "acc.7,%05d$", lbl->key+100);
- // left side is negative, 8-bit two's complement, this fails for -128
- emitcode ("setb", "F0"); // set sign flag
- emitcode ("cpl", "a");
- emitcode ("inc", "a");
-
- emitcode ("", "%05d$:", lbl->key+100);
-
- /* if literal */
- if (AOP_TYPE(right)==AOP_LIT) {
- signed char val=(signed char)floatFromVal (AOP (right)->aopu.aop_lit);
- /* AND literal negative */
- if (val < 0) {
- emitcode ("cpl", "F0"); // complement sign flag
- emitcode ("mov", "b,#0x%02x", -val);
- } else {
- emitcode ("mov", "b,#0x%02x", val);
- }
- } else {
- lbl=newiTempLabel(NULL);
- emitcode ("mov", "b,a");
- emitcode ("mov", "a,%s", aopGet (AOP (right), 0, FALSE, FALSE));
- emitcode ("jnb", "acc.7,%05d$", lbl->key+100);
- // right side is negative, 8-bit two's complement
- emitcode ("cpl", "F0"); // complement sign flag
- emitcode ("cpl", "a");
- emitcode ("inc", "a");
- emitcode ("", "%05d$:", lbl->key+100);
- }
- emitcode ("mul", "ab");
+ if (AOP_TYPE(left) == AOP_LIT)
+ {
+ signed char val = (char) floatFromVal (AOP (left)->aopu.aop_lit);
- lbl=newiTempLabel(NULL);
- emitcode ("jnb", "F0,%05d$", lbl->key+100);
- // only ONE op was negative, we have to do a 8/16-bit two's complement
- emitcode ("cpl", "a"); // lsb
- if (size==1) {
- emitcode ("inc", "a");
- } else {
- emitcode ("add", "a,#1");
- emitcode ("xch", "a,b");
- emitcode ("cpl", "a"); // msb
- emitcode ("addc", "a,#0");
- emitcode ("xch", "a,b");
- }
+ if (!lUnsigned && val < 0)
+ emitcode ("mov", "a,#0x%02x", -val);
+ else
+ emitcode ("mov", "a,#0x%02x", (unsigned char) val);
+ }
+ else /* ! literal */
+ {
+ MOVA (aopGet (left, 0, FALSE, FALSE));
- emitcode ("", "%05d$:", lbl->key+100);
- aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
- if (size==2) {
- aopPut (AOP (result), "b", 1, isOperandVolatile (result, FALSE));
- }
+ if (!lUnsigned)
+ {
+ lbl = newiTempLabel (NULL);
+ emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100));
+ emitcode ("cpl", "F0"); /* complement sign flag */
+ emitcode ("cpl", "a"); /* 2's complement */
+ emitcode ("inc", "a");
+ emitLabel (lbl);
+ }
+ }
+
+ /* now the multiplication */
+ emitcode ("mul", "ab");
+ if (runtimeSign || compiletimeSign)
+ {
+ lbl = newiTempLabel (NULL);
+ if (runtimeSign)
+ emitcode ("jnb", "F0,%05d$", (lbl->key + 100));
+ emitcode ("cpl", "a"); /* lsb 2's complement */
+ if (size != 2)
+ emitcode ("inc", "a"); /* inc doesn't set carry flag */
+ else
+ {
+ emitcode ("add", "a,#1"); /* this sets carry flag */
+ emitcode ("xch", "a,b");
+ emitcode ("cpl", "a"); /* msb 2's complement */
+ emitcode ("addc", "a,#0");
+ emitcode ("xch", "a,b");
+ }
+ emitLabel (lbl);
+ }
+ aopPut (result, "a", 0);
+ if (size == 2)
+ aopPut (result, "b", 1);
+
+ popB (pushedB);
}
/*-----------------------------------------------------------------*/
operand *right = IC_RIGHT (ic);
operand *result = IC_RESULT (ic);
- D(emitcode ("; genMult",""));
+ D (emitcode (";", "genMult"));
- /* assign the amsops */
+ /* assign the asmops */
aopOp (left, ic, FALSE);
aopOp (right, ic, FALSE);
aopOp (result, ic, TRUE);
/* should have been converted to function call */
fprintf (stderr, "left: %d right: %d\n", getSize(OP_SYMBOL(left)->type),
- getSize(OP_SYMBOL(right)->type));
+ getSize(OP_SYMBOL(right)->type));
assert (0);
release:
/*-----------------------------------------------------------------*/
static void
genDivbits (operand * left,
- operand * right,
- operand * result)
+ operand * right,
+ operand * result)
{
-
char *l;
+ bool pushedB;
D(emitcode ("; genDivbits",""));
+ pushedB = pushB ();
+
/* the result must be bit */
- emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE));
- l = aopGet (AOP (left), 0, FALSE, FALSE);
+ emitcode ("mov", "b,%s", aopGet (right, 0, FALSE, FALSE));
+ l = aopGet (left, 0, FALSE, FALSE);
MOVA (l);
emitcode ("div", "ab");
emitcode ("rrc", "a");
- aopPut (AOP (result), "c", 0, isOperandVolatile (result, FALSE));
+
+ popB (pushedB);
+
+ aopPut (result, "c", 0);
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
static void
genDivOneByte (operand * left,
- operand * right,
- operand * result)
+ operand * right,
+ operand * result)
{
- sym_link *opetype = operandType (result);
- char *l;
+ bool lUnsigned, rUnsigned, pushedB;
+ bool runtimeSign, compiletimeSign;
+ bool accuse = FALSE;
+ bool pushedA = FALSE;
symbol *lbl;
int size, offset;
D(emitcode ("; genDivOneByte",""));
+ /* Why is it necessary that genDivOneByte() can return an int result?
+ Have a look at:
+
+ volatile unsigned char uc;
+ volatile signed char sc1, sc2;
+ volatile int i;
+
+ uc = 255;
+ sc1 = -1;
+ i = uc / sc1;
+
+ Or:
+
+ sc1 = -128;
+ sc2 = -1;
+ i = sc1 / sc2;
+
+ In all cases a one byte result would overflow, the following cast to int
+ would return the wrong result.
+
+ Two possible solution:
+ a) cast operands to int, if ((unsigned) / (signed)) or
+ ((signed) / (signed))
+ b) return an 16 bit signed int; this is what we're doing here!
+ */
+
size = AOP_SIZE (result) - 1;
offset = 1;
+ lUnsigned = SPEC_USIGN (getSpec (operandType (left)));
+ rUnsigned = SPEC_USIGN (getSpec (operandType (right)));
+
+ pushedB = pushB ();
+
/* signed or unsigned */
- if (SPEC_USIGN (opetype))
+ if (lUnsigned && rUnsigned)
{
/* unsigned is easy */
- emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE));
- l = aopGet (AOP (left), 0, FALSE, FALSE);
- MOVA (l);
+ emitcode ("mov", "b,%s", aopGet (right, 0, FALSE, FALSE));
+ MOVA (aopGet (left, 0, FALSE, FALSE));
emitcode ("div", "ab");
- aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", 0);
while (size--)
- aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE));
+ aopPut (result, zero, offset++);
+
+ popB (pushedB);
return;
}
/* signed is a little bit more difficult */
+ /* now sign adjust for both left & right */
+
+ /* let's see what's needed: */
+ /* apply negative sign during runtime */
+ runtimeSign = FALSE;
+ /* negative sign from literals */
+ compiletimeSign = FALSE;
+
+ if (!lUnsigned)
+ {
+ if (AOP_TYPE(left) == AOP_LIT)
+ {
+ /* signed literal */
+ signed char val = (char) floatFromVal (AOP (left)->aopu.aop_lit);
+ if (val < 0)
+ compiletimeSign = TRUE;
+ }
+ else
+ /* signed but not literal */
+ runtimeSign = TRUE;
+ }
+
+ if (!rUnsigned)
+ {
+ if (AOP_TYPE(right) == AOP_LIT)
+ {
+ /* signed literal */
+ signed char val = (char) floatFromVal (AOP (right)->aopu.aop_lit);
+ if (val < 0)
+ compiletimeSign ^= TRUE;
+ }
+ else
+ /* signed but not literal */
+ runtimeSign = TRUE;
+ }
+
+ /* initialize F0, which stores the runtime sign */
+ if (runtimeSign)
+ {
+ if (compiletimeSign)
+ emitcode ("setb", "F0"); /* set sign flag */
+ else
+ emitcode ("clr", "F0"); /* reset sign flag */
+ }
+
/* save the signs of the operands */
- l = aopGet (AOP (left), 0, FALSE, FALSE);
- MOVA (l);
- emitcode ("xrl", "a,%s", aopGet (AOP (right), 0, FALSE, TRUE));
- emitcode ("push", "acc"); /* save it on the stack */
+ if (AOP_TYPE(right) == AOP_LIT)
+ {
+ signed char val = (char) floatFromVal (AOP (right)->aopu.aop_lit);
- /* now sign adjust for both left & right */
- l = aopGet (AOP (right), 0, FALSE, FALSE);
- MOVA (l);
- lbl = newiTempLabel (NULL);
- emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100));
- emitcode ("cpl", "a");
- emitcode ("inc", "a");
- emitcode ("", "%05d$:", (lbl->key + 100));
- emitcode ("mov", "b,a");
+ if (!rUnsigned && val < 0)
+ emitcode ("mov", "b,#0x%02x", -val);
+ else
+ emitcode ("mov", "b,#0x%02x", (unsigned char) val);
+ }
+ else /* ! literal */
+ {
+ if (rUnsigned)
+ emitcode ("mov", "b,%s", aopGet (right, 0, FALSE, FALSE));
+ else
+ {
+ MOVA (aopGet (right, 0, FALSE, FALSE));
+ lbl = newiTempLabel (NULL);
+ emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100));
+ emitcode ("cpl", "F0"); /* complement sign flag */
+ emitcode ("cpl", "a"); /* 2's complement */
+ emitcode ("inc", "a");
+ emitLabel (lbl);
+ emitcode ("mov", "b,a");
+ }
+ }
- /* sign adjust left side */
- l = aopGet (AOP (left), 0, FALSE, FALSE);
- MOVA (l);
+ if (AOP_TYPE(left) == AOP_LIT)
+ {
+ signed char val = (char) floatFromVal (AOP (left)->aopu.aop_lit);
- lbl = newiTempLabel (NULL);
- emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100));
- emitcode ("cpl", "a");
- emitcode ("inc", "a");
- emitcode ("", "%05d$:", (lbl->key + 100));
+ if (!lUnsigned && val < 0)
+ emitcode ("mov", "a,#0x%02x", -val);
+ else
+ emitcode ("mov", "a,#0x%02x", (unsigned char) val);
+ }
+ else /* ! literal */
+ {
+ MOVA (aopGet (left, 0, FALSE, FALSE));
+
+ if (!lUnsigned)
+ {
+ lbl = newiTempLabel (NULL);
+ emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100));
+ emitcode ("cpl", "F0"); /* complement sign flag */
+ emitcode ("cpl", "a"); /* 2's complement */
+ emitcode ("inc", "a");
+ emitLabel (lbl);
+ }
+ }
/* now the division */
emitcode ("div", "ab");
- /* we are interested in the lower order
- only */
- emitcode ("mov", "b,a");
- lbl = newiTempLabel (NULL);
- emitcode ("pop", "acc");
- /* if there was an over flow we don't
- adjust the sign of the result */
- emitcode ("jb", "ov,%05d$", (lbl->key + 100));
- emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100));
- CLRC;
- emitcode ("clr", "a");
- emitcode ("subb", "a,b");
- emitcode ("mov", "b,a");
- emitcode ("", "%05d$:", (lbl->key + 100));
- /* now we are done */
- aopPut (AOP (result), "b", 0, isOperandVolatile (result, FALSE));
- if (size > 0)
+ if (runtimeSign || compiletimeSign)
{
- emitcode ("mov", "c,b.7");
- emitcode ("subb", "a,acc");
+ lbl = newiTempLabel (NULL);
+ if (runtimeSign)
+ emitcode ("jnb", "F0,%05d$", (lbl->key + 100));
+ emitcode ("cpl", "a"); /* lsb 2's complement */
+ emitcode ("inc", "a");
+ emitLabel (lbl);
+
+ accuse = aopPut (result, "a", 0);
+ if (size > 0)
+ {
+ /* msb is 0x00 or 0xff depending on the sign */
+ if (runtimeSign)
+ {
+ if (accuse)
+ {
+ emitcode ("push", "acc");
+ pushedA = TRUE;
+ }
+ emitcode ("mov", "c,F0");
+ emitcode ("subb", "a,acc");
+ while (size--)
+ aopPut (result, "a", offset++);
+ }
+ else /* compiletimeSign */
+ {
+ if (aopPutUsesAcc (result, "#0xFF", offset))
+ {
+ emitcode ("push", "acc");
+ pushedA = TRUE;
+ }
+ while (size--)
+ aopPut (result, "#0xff", offset++);
+ }
+ }
+ }
+ else
+ {
+ aopPut (result, "a", 0);
+ while (size--)
+ aopPut (result, zero, offset++);
}
- while (size--)
- aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
+ if (pushedA)
+ emitcode ("pop", "acc");
+ popB (pushedB);
}
/*-----------------------------------------------------------------*/
operand *right = IC_RIGHT (ic);
operand *result = IC_RESULT (ic);
- D(emitcode ("; genDiv",""));
+ D (emitcode (";", "genDiv"));
/* assign the amsops */
aopOp (left, ic, FALSE);
/* should have been converted to function call */
assert (0);
release:
+ freeAsmop (result, NULL, ic, TRUE);
freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
static void
genModbits (operand * left,
- operand * right,
- operand * result)
+ operand * right,
+ operand * result)
{
-
char *l;
+ bool pushedB;
+
+ D (emitcode (";", "genModbits"));
- D(emitcode ("; genModbits",""));
+ pushedB = pushB ();
/* the result must be bit */
- emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE));
- l = aopGet (AOP (left), 0, FALSE, FALSE);
+ emitcode ("mov", "b,%s", aopGet (right, 0, FALSE, FALSE));
+ l = aopGet (left, 0, FALSE, FALSE);
MOVA (l);
emitcode ("div", "ab");
emitcode ("mov", "a,b");
emitcode ("rrc", "a");
- aopPut (AOP (result), "c", 0, isOperandVolatile (result, FALSE));
+
+ popB (pushedB);
+
+ aopPut (result, "c", 0);
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
static void
genModOneByte (operand * left,
- operand * right,
- operand * result)
+ operand * right,
+ operand * result)
{
- sym_link *opetype = operandType (result);
- char *l;
+ bool lUnsigned, rUnsigned, pushedB;
+ bool runtimeSign, compiletimeSign;
symbol *lbl;
+ int size, offset;
+
+ D (emitcode (";", "genModOneByte"));
+
+ size = AOP_SIZE (result) - 1;
+ offset = 1;
+ lUnsigned = SPEC_USIGN (getSpec (operandType (left)));
+ rUnsigned = SPEC_USIGN (getSpec (operandType (right)));
+
+ /* if right is a literal, check it for 2^n */
+ if (AOP_TYPE(right) == AOP_LIT)
+ {
+ unsigned char val = abs((int) operandLitValue(right));
+ symbol *lbl2 = NULL;
+
+ switch (val)
+ {
+ case 1: /* sometimes it makes sense (on tricky code and hardware)... */
+ case 2:
+ case 4:
+ case 8:
+ case 16:
+ case 32:
+ case 64:
+ case 128:
+ if (lUnsigned)
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "modulus of unsigned char by 2^n literal shouldn't be processed here");
+ /* because iCode should have been changed to genAnd */
+ /* see file "SDCCopt.c", function "convertToFcall()" */
+
+ MOVA (aopGet (left, 0, FALSE, FALSE));
+ emitcode ("mov", "c,acc.7");
+ emitcode ("anl", "a,#0x%02x", val - 1);
+ lbl = newiTempLabel (NULL);
+ emitcode ("jz", "%05d$", (lbl->key + 100));
+ emitcode ("jnc", "%05d$", (lbl->key + 100));
+ emitcode ("orl", "a,#0x%02x", 0xff ^ (val - 1));
+ if (size)
+ {
+ int size2 = size;
+ int offs2 = offset;
+
+ aopPut (result, "a", 0);
+ while (size2--)
+ aopPut (result, "#0xff", offs2++);
+ lbl2 = newiTempLabel (NULL);
+ emitcode ("sjmp", "%05d$", (lbl2->key + 100));
+ }
+ emitLabel (lbl);
+ aopPut (result, "a", 0);
+ while (size--)
+ aopPut (result, zero, offset++);
+ if (lbl2)
+ {
+ emitLabel (lbl2);
+ }
+ return;
+
+ default:
+ break;
+ }
+ }
- D(emitcode ("; genModOneByte",""));
+ pushedB = pushB ();
/* signed or unsigned */
- if (SPEC_USIGN (opetype))
+ if (lUnsigned && rUnsigned)
{
/* unsigned is easy */
- emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE));
- l = aopGet (AOP (left), 0, FALSE, FALSE);
- MOVA (l);
+ emitcode ("mov", "b,%s", aopGet (right, 0, FALSE, FALSE));
+ MOVA (aopGet (left, 0, FALSE, FALSE));
emitcode ("div", "ab");
- aopPut (AOP (result), "b", 0, isOperandVolatile (result, FALSE));
+ aopPut (result, "b", 0);
+ while (size--)
+ aopPut (result, zero, offset++);
+
+ popB (pushedB);
return;
}
/* signed is a little bit more difficult */
- /* save the signs of the operands */
- l = aopGet (AOP (left), 0, FALSE, FALSE);
- MOVA (l);
+ /* now sign adjust for both left & right */
- emitcode ("xrl", "a,%s", aopGet (AOP (right), 0, FALSE, FALSE));
- emitcode ("push", "acc"); /* save it on the stack */
+ /* modulus: sign of the right operand has no influence on the result! */
+ if (AOP_TYPE(right) == AOP_LIT)
+ {
+ signed char val = (char) operandLitValue(right);
- /* now sign adjust for both left & right */
- l = aopGet (AOP (right), 0, FALSE, FALSE);
- MOVA (l);
+ if (!rUnsigned && val < 0)
+ emitcode ("mov", "b,#0x%02x", -val);
+ else
+ emitcode ("mov", "b,#0x%02x", (unsigned char) val);
+ }
+ else /* not literal */
+ {
+ if (rUnsigned)
+ emitcode ("mov", "b,%s", aopGet (right, 0, FALSE, FALSE));
+ else
+ {
+ MOVA (aopGet (right, 0, FALSE, FALSE));
+ lbl = newiTempLabel (NULL);
+ emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100));
+ emitcode ("cpl", "a"); /* 2's complement */
+ emitcode ("inc", "a");
+ emitLabel (lbl);
+ emitcode ("mov", "b,a");
+ }
+ }
- lbl = newiTempLabel (NULL);
- emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100));
- emitcode ("cpl", "a");
- emitcode ("inc", "a");
- emitcode ("", "%05d$:", (lbl->key + 100));
- emitcode ("mov", "b,a");
+ /* let's see what's needed: */
+ /* apply negative sign during runtime */
+ runtimeSign = FALSE;
+ /* negative sign from literals */
+ compiletimeSign = FALSE;
/* sign adjust left side */
- l = aopGet (AOP (left), 0, FALSE, FALSE);
- MOVA (l);
+ if (AOP_TYPE(left) == AOP_LIT)
+ {
+ signed char val = (char) floatFromVal (AOP (left)->aopu.aop_lit);
- lbl = newiTempLabel (NULL);
- emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100));
- emitcode ("cpl", "a");
- emitcode ("inc", "a");
- emitcode ("", "%05d$:", (lbl->key + 100));
+ if (!lUnsigned && val < 0)
+ {
+ compiletimeSign = TRUE; /* set sign flag */
+ emitcode ("mov", "a,#0x%02x", -val);
+ }
+ else
+ emitcode ("mov", "a,#0x%02x", (unsigned char) val);
+ }
+ else /* ! literal */
+ {
+ MOVA (aopGet (left, 0, FALSE, FALSE));
- /* now the multiplication */
+ if (!lUnsigned)
+ {
+ runtimeSign = TRUE;
+ emitcode ("clr", "F0"); /* clear sign flag */
+
+ lbl = newiTempLabel (NULL);
+ emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100));
+ emitcode ("setb", "F0"); /* set sign flag */
+ emitcode ("cpl", "a"); /* 2's complement */
+ emitcode ("inc", "a");
+ emitLabel (lbl);
+ }
+ }
+
+ /* now the modulus */
emitcode ("div", "ab");
- /* we are interested in the lower order
- only */
- lbl = newiTempLabel (NULL);
- emitcode ("pop", "acc");
- /* if there was an over flow we don't
- adjust the sign of the result */
- emitcode ("jb", "ov,%05d$", (lbl->key + 100));
- emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100));
- CLRC;
- emitcode ("clr", "a");
- emitcode ("subb", "a,b");
- emitcode ("mov", "b,a");
- emitcode ("", "%05d$:", (lbl->key + 100));
- /* now we are done */
- aopPut (AOP (result), "b", 0, isOperandVolatile (result, FALSE));
+ if (runtimeSign || compiletimeSign)
+ {
+ emitcode ("mov", "a,b");
+ lbl = newiTempLabel (NULL);
+ if (runtimeSign)
+ emitcode ("jnb", "F0,%05d$", (lbl->key + 100));
+ emitcode ("cpl", "a"); /* 2's complement */
+ emitcode ("inc", "a");
+ emitLabel (lbl);
+
+ aopPut (result, "a", 0);
+ if (size > 0)
+ {
+ /* msb is 0x00 or 0xff depending on the sign */
+ if (runtimeSign)
+ {
+ emitcode ("mov", "c,F0");
+ emitcode ("subb", "a,acc");
+ while (size--)
+ aopPut (result, "a", offset++);
+ }
+ else /* compiletimeSign */
+ while (size--)
+ aopPut (result, "#0xff", offset++);
+ }
+ }
+ else
+ {
+ aopPut (result, "b", 0);
+ while (size--)
+ aopPut (result, zero, offset++);
+ }
+ popB (pushedB);
}
/*-----------------------------------------------------------------*/
operand *right = IC_RIGHT (ic);
operand *result = IC_RESULT (ic);
- D(emitcode ("; genMod",""));
+ D (emitcode (";", "genMod"));
- /* assign the amsops */
+ /* assign the asmops */
aopOp (left, ic, FALSE);
aopOp (right, ic, FALSE);
aopOp (result, ic, TRUE);
assert (0);
release:
+ freeAsmop (result, NULL, ic, TRUE);
freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
/* genIfxJump :- will create a jump depending on the ifx */
/*-----------------------------------------------------------------*/
static void
-genIfxJump (iCode * ic, char *jval)
+genIfxJump (iCode * ic, char *jval, operand *left, operand *right, operand *result)
{
symbol *jlbl;
symbol *tlbl = newiTempLabel (NULL);
char *inst;
- D(emitcode ("; genIfxJump",""));
+ D (emitcode (";", "genIfxJump"));
/* if true label then we jump if condition
supplied is true */
{
jlbl = IC_TRUE (ic);
inst = ((strcmp (jval, "a") == 0 ? "jz" :
- (strcmp (jval, "c") == 0 ? "jnc" : "jnb")));
+ (strcmp (jval, "c") == 0 ? "jnc" : "jnb")));
}
else
{
/* false label is present */
jlbl = IC_FALSE (ic);
inst = ((strcmp (jval, "a") == 0 ? "jnz" :
- (strcmp (jval, "c") == 0 ? "jc" : "jb")));
+ (strcmp (jval, "c") == 0 ? "jc" : "jb")));
}
if (strcmp (inst, "jb") == 0 || strcmp (inst, "jnb") == 0)
emitcode (inst, "%s,%05d$", jval, (tlbl->key + 100));
else
emitcode (inst, "%05d$", tlbl->key + 100);
+ freeForBranchAsmop (result);
+ freeForBranchAsmop (right);
+ freeForBranchAsmop (left);
emitcode ("ljmp", "%05d$", jlbl->key + 100);
- emitcode ("", "%05d$:", tlbl->key + 100);
+ emitLabel (tlbl);
/* mark the icode as generated */
ic->generated = 1;
/*-----------------------------------------------------------------*/
static void
genCmp (operand * left, operand * right,
- operand * result, iCode * ifx, int sign, iCode *ic)
+ operand * result, iCode * ifx, int sign, iCode *ic)
{
int size, offset = 0;
unsigned long lit = 0L;
bool rightInB;
- D(emitcode ("; genCmp",""));
+ D (emitcode (";", "genCmp"));
/* if left & right are bit variables */
if (AOP_TYPE (left) == AOP_CRY &&
/* if unsigned char cmp with lit, do cjne left,#right,zz */
if ((size == 1) && !sign &&
- (AOP_TYPE (right) == AOP_LIT && AOP_TYPE (left) != AOP_DIR))
- {
- symbol *lbl = newiTempLabel (NULL);
- emitcode ("cjne", "%s,%s,%05d$",
- aopGet (AOP (left), offset, FALSE, FALSE),
- aopGet (AOP (right), offset, FALSE, FALSE),
- lbl->key + 100);
- emitcode ("", "%05d$:", lbl->key + 100);
- }
+ (AOP_TYPE (right) == AOP_LIT && AOP_TYPE (left) != AOP_DIR))
+ {
+ symbol *lbl = newiTempLabel (NULL);
+ emitcode ("cjne", "%s,%s,%05d$",
+ aopGet (left, offset, FALSE, FALSE),
+ aopGet (right, offset, FALSE, FALSE),
+ lbl->key + 100);
+ emitLabel (lbl);
+ }
else
- {
- if (AOP_TYPE (right) == AOP_LIT)
- {
- lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit);
- /* optimize if(x < 0) or if(x >= 0) */
- if (lit == 0L)
- {
- if (!sign)
- {
- CLRC;
- }
- else
- {
- MOVA (aopGet (AOP (left), AOP_SIZE (left) - 1, FALSE, FALSE));
- if (!(AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result)) && ifx)
- {
- genIfxJump (ifx, "acc.7");
- return;
- }
- else
- emitcode ("rlc", "a");
- }
- goto release;
- }
- }
- CLRC;
- while (size--)
- {
- rightInB = aopGetUsesAcc(AOP (right), offset);
- if (rightInB)
- emitcode ("mov", "b,%s", aopGet (AOP (right), offset, FALSE, FALSE));
- MOVA (aopGet (AOP (left), offset, FALSE, FALSE));
- if (sign && size == 0)
- {
- emitcode ("xrl", "a,#0x80");
- if (AOP_TYPE (right) == AOP_LIT)
- {
- unsigned long lit = (unsigned long)
- floatFromVal (AOP (right)->aopu.aop_lit);
- emitcode ("subb", "a,#0x%02x",
- 0x80 ^ (unsigned int) ((lit >> (offset * 8)) & 0x0FFL));
- }
- else
- {
- if (!rightInB)
- emitcode ("mov", "b,%s", aopGet (AOP (right), offset, FALSE, FALSE));
- emitcode ("xrl", "b,#0x80");
- emitcode ("subb", "a,b");
- }
- }
- else
- {
- if (rightInB)
- emitcode ("subb", "a,b");
- else
- emitcode ("subb", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE));
- }
- offset++;
- }
- }
+ {
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit);
+ /* optimize if(x < 0) or if(x >= 0) */
+ if (lit == 0L)
+ {
+ if (!sign)
+ {
+ CLRC;
+ }
+ else
+ {
+ MOVA (aopGet (left, AOP_SIZE (left) - 1, FALSE, FALSE));
+ if (!(AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result)) && ifx)
+ {
+ genIfxJump (ifx, "acc.7", left, right, result);
+ freeAsmop (right, NULL, ic, TRUE);
+ freeAsmop (left, NULL, ic, TRUE);
+
+ return;
+ }
+ else
+ {
+ emitcode ("rlc", "a");
+ }
+ }
+ goto release;
+ }
+ else
+ {//nonzero literal
+ int bytelit = ((lit >> (offset * 8)) & 0x0FFL);
+ while (size && (bytelit == 0))
+ {
+ offset++;
+ bytelit = ((lit >> (offset * 8)) & 0x0FFL);
+ size--;
+ }
+ CLRC;
+ while (size--)
+ {
+ MOVA (aopGet (left, offset, FALSE, FALSE));
+ if (sign && size == 0)
+ {
+ emitcode ("xrl", "a,#0x80");
+ emitcode ("subb", "a,#0x%02x",
+ 0x80 ^ (unsigned int) ((lit >> (offset * 8)) & 0x0FFL));
+ }
+ else
+ {
+ emitcode ("subb", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ }
+ offset++;
+ }
+ goto release;
+ }
+ }
+ CLRC;
+ while (size--)
+ {
+ bool pushedB = FALSE;
+ rightInB = aopGetUsesAcc(right, offset);
+ if (rightInB)
+ {
+ pushedB = pushB ();
+ emitcode ("mov", "b,%s", aopGet (right, offset, FALSE, FALSE));
+ }
+ MOVA (aopGet (left, offset, FALSE, FALSE));
+ if (sign && size == 0)
+ {
+ emitcode ("xrl", "a,#0x80");
+ if (!rightInB)
+ {
+ pushedB = pushB ();
+ rightInB++;
+ MOVB (aopGet (right, offset, FALSE, FALSE));
+ }
+ emitcode ("xrl", "b,#0x80");
+ emitcode ("subb", "a,b");
+ }
+ else
+ {
+ if (rightInB)
+ emitcode ("subb", "a,b");
+ else
+ emitcode ("subb", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ }
+ if (rightInB)
+ popB (pushedB);
+ offset++;
+ }
+ }
}
release:
ifx conditional branch then generate
code a little differently */
if (ifx)
- genIfxJump (ifx, "c");
+ {
+ genIfxJump (ifx, "c", NULL, NULL, result);
+ }
else
- outBitC (result);
+ {
+ outBitC (result);
+ }
/* leave the result in acc */
}
}
sym_link *letype, *retype;
int sign;
- D(emitcode ("; genCmpGt",""));
+ D (emitcode (";", "genCmpGt"));
left = IC_LEFT (ic);
right = IC_RIGHT (ic);
letype = getSpec (operandType (left));
retype = getSpec (operandType (right));
- sign = !(SPEC_USIGN (letype) | SPEC_USIGN (retype));
+ sign = !((SPEC_USIGN (letype) && !(IS_CHAR (letype) && IS_LITERAL (letype))) ||
+ (SPEC_USIGN (retype) && !(IS_CHAR (retype) && IS_LITERAL (retype))));
/* assign the amsops */
+ aopOp (result, ic, TRUE);
aopOp (left, ic, FALSE);
aopOp (right, ic, FALSE);
- aopOp (result, ic, TRUE);
- genCmp (right, left, result, ifx, sign,ic);
+ genCmp (right, left, result, ifx, sign, ic);
freeAsmop (result, NULL, ic, TRUE);
}
sym_link *letype, *retype;
int sign;
- D(emitcode ("; genCmpLt",""));
+ D (emitcode (";", "genCmpLt"));
left = IC_LEFT (ic);
right = IC_RIGHT (ic);
letype = getSpec (operandType (left));
retype = getSpec (operandType (right));
- sign = !(SPEC_USIGN (letype) | SPEC_USIGN (retype));
-
+ sign = !((SPEC_USIGN (letype) && !(IS_CHAR (letype) && IS_LITERAL (letype))) ||
+ (SPEC_USIGN (retype) && !(IS_CHAR (retype) && IS_LITERAL (retype))));
/* assign the amsops */
+ aopOp (result, ic, TRUE);
aopOp (left, ic, FALSE);
aopOp (right, ic, FALSE);
- aopOp (result, ic, TRUE);
- genCmp (left, right, result, ifx, sign,ic);
+ genCmp (left, right, result, ifx, sign, ic);
freeAsmop (result, NULL, ic, TRUE);
}
int offset = 0;
unsigned long lit = 0L;
+ D (emitcode (";", "gencjneshort"));
+
/* if the left side is a literal or
if the right is in a pointer register and left
is not */
if ((AOP_TYPE (left) == AOP_LIT) ||
+ (AOP_TYPE (left) == AOP_IMMD) ||
(IS_AOP_PREG (right) && !IS_AOP_PREG (left)))
{
operand *t = right;
right = left;
left = t;
}
+
if (AOP_TYPE (right) == AOP_LIT)
lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit);
AOP_TYPE (left) != AOP_IMMD)
{
while (size--)
- {
- emitcode ("cjne", "%s,%s,%05d$",
- aopGet (AOP (left), offset, FALSE, FALSE),
- aopGet (AOP (right), offset, FALSE, FALSE),
- lbl->key + 100);
- offset++;
- }
+ {
+ emitcode ("cjne", "%s,%s,%05d$",
+ aopGet (left, offset, FALSE, FALSE),
+ aopGet (right, offset, FALSE, FALSE),
+ lbl->key + 100);
+ offset++;
+ }
}
/* if the right side is in a register or in direct space or
if the left is a pointer register & right is not */
else if (AOP_TYPE (right) == AOP_REG ||
- AOP_TYPE (right) == AOP_DIR ||
- AOP_TYPE (right) == AOP_LIT ||
- (AOP_TYPE (left) == AOP_DIR && AOP_TYPE (right) == AOP_LIT) ||
- (IS_AOP_PREG (left) && !IS_AOP_PREG (right)))
+ AOP_TYPE (right) == AOP_DIR ||
+ AOP_TYPE (right) == AOP_LIT ||
+ AOP_TYPE (right) == AOP_IMMD ||
+ (AOP_TYPE (left) == AOP_DIR && AOP_TYPE (right) == AOP_LIT) ||
+ (IS_AOP_PREG (left) && !IS_AOP_PREG (right)))
{
while (size--)
- {
- MOVA (aopGet (AOP (left), offset, FALSE, FALSE));
- if ((AOP_TYPE (left) == AOP_DIR && AOP_TYPE (right) == AOP_LIT) &&
- ((unsigned int) ((lit >> (offset * 8)) & 0x0FFL) == 0))
- emitcode ("jnz", "%05d$", lbl->key + 100);
- else
- emitcode ("cjne", "a,%s,%05d$",
- aopGet (AOP (right), offset, FALSE, TRUE),
- lbl->key + 100);
- offset++;
- }
+ {
+ MOVA (aopGet (left, offset, FALSE, FALSE));
+ if ((AOP_TYPE (left) == AOP_DIR && AOP_TYPE (right) == AOP_LIT) &&
+ ((unsigned int) ((lit >> (offset * 8)) & 0x0FFL) == 0))
+ emitcode ("jnz", "%05d$", lbl->key + 100);
+ else
+ emitcode ("cjne", "a,%s,%05d$",
+ aopGet (right, offset, FALSE, TRUE),
+ lbl->key + 100);
+ offset++;
+ }
}
else
{
/* right is a pointer reg need both a & b */
while (size--)
- {
- char *l = aopGet (AOP (left), offset, FALSE, FALSE);
- if (strcmp (l, "b"))
- emitcode ("mov", "b,%s", l);
- MOVA (aopGet (AOP (right), offset, FALSE, FALSE));
- emitcode ("cjne", "a,b,%05d$", lbl->key + 100);
- offset++;
- }
+ {
+ //if B in use: push B; mov B,left; mov A,right; clrc; subb A,B; pop B; jnz
+ wassertl(!BINUSE, "B was in use");
+ MOVB (aopGet (left, offset, FALSE, FALSE));
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ emitcode ("cjne", "a,b,%05d$", lbl->key + 100);
+ offset++;
+ }
}
}
{
symbol *tlbl = newiTempLabel (NULL);
+ D (emitcode (";", "gencjne"));
+
gencjneshort (left, right, lbl);
emitcode ("mov", "a,%s", one);
emitcode ("sjmp", "%05d$", tlbl->key + 100);
- emitcode ("", "%05d$:", lbl->key + 100);
+ emitLabel (lbl);
emitcode ("clr", "a");
- emitcode ("", "%05d$:", tlbl->key + 100);
+ emitLabel (tlbl);
}
/*-----------------------------------------------------------------*/
static void
genCmpEq (iCode * ic, iCode * ifx)
{
+ bool swappedLR = FALSE;
operand *left, *right, *result;
- D(emitcode ("; genCmpEq",""));
+ D (emitcode (";", "genCmpEq"));
aopOp ((left = IC_LEFT (ic)), ic, FALSE);
aopOp ((right = IC_RIGHT (ic)), ic, FALSE);
operand *t = IC_RIGHT (ic);
IC_RIGHT (ic) = IC_LEFT (ic);
IC_LEFT (ic) = t;
+ swappedLR = TRUE;
}
if (ifx && !AOP_SIZE (result))
symbol *tlbl;
/* if they are both bit variables */
if (AOP_TYPE (left) == AOP_CRY &&
- ((AOP_TYPE (right) == AOP_CRY) || (AOP_TYPE (right) == AOP_LIT)))
- {
- if (AOP_TYPE (right) == AOP_LIT)
- {
- unsigned long lit = (unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit);
- if (lit == 0L)
- {
- emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
- emitcode ("cpl", "c");
- }
- else if (lit == 1L)
- {
- emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
- }
- else
- {
- emitcode ("clr", "c");
- }
- /* AOP_TYPE(right) == AOP_CRY */
- }
- else
- {
- symbol *lbl = newiTempLabel (NULL);
- emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
- emitcode ("jb", "%s,%05d$", AOP (right)->aopu.aop_dir, (lbl->key + 100));
- emitcode ("cpl", "c");
- emitcode ("", "%05d$:", (lbl->key + 100));
- }
- /* if true label then we jump if condition
- supplied is true */
- tlbl = newiTempLabel (NULL);
- if (IC_TRUE (ifx))
- {
- emitcode ("jnc", "%05d$", tlbl->key + 100);
- emitcode ("ljmp", "%05d$", IC_TRUE (ifx)->key + 100);
- }
- else
- {
- emitcode ("jc", "%05d$", tlbl->key + 100);
- emitcode ("ljmp", "%05d$", IC_FALSE (ifx)->key + 100);
- }
- emitcode ("", "%05d$:", tlbl->key + 100);
- }
+ ((AOP_TYPE (right) == AOP_CRY) || (AOP_TYPE (right) == AOP_LIT)))
+ {
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ unsigned long lit = (unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit);
+ if (lit == 0L)
+ {
+ emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
+ emitcode ("cpl", "c");
+ }
+ else if (lit == 1L)
+ {
+ emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
+ }
+ else
+ {
+ emitcode ("clr", "c");
+ }
+ /* AOP_TYPE(right) == AOP_CRY */
+ }
+ else
+ {
+ symbol *lbl = newiTempLabel (NULL);
+ emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
+ emitcode ("jb", "%s,%05d$", AOP (right)->aopu.aop_dir, (lbl->key + 100));
+ emitcode ("cpl", "c");
+ emitLabel (lbl);
+ }
+ /* if true label then we jump if condition
+ supplied is true */
+ tlbl = newiTempLabel (NULL);
+ if (IC_TRUE (ifx))
+ {
+ emitcode ("jnc", "%05d$", tlbl->key + 100);
+ freeForBranchAsmop (result);
+ freeForBranchAsmop (right);
+ freeForBranchAsmop (left);
+ emitcode ("ljmp", "%05d$", IC_TRUE (ifx)->key + 100);
+ }
+ else
+ {
+ emitcode ("jc", "%05d$", tlbl->key + 100);
+ freeForBranchAsmop (result);
+ freeForBranchAsmop (right);
+ freeForBranchAsmop (left);
+ emitcode ("ljmp", "%05d$", IC_FALSE (ifx)->key + 100);
+ }
+ emitLabel (tlbl);
+ }
else
- {
- tlbl = newiTempLabel (NULL);
- gencjneshort (left, right, tlbl);
- if (IC_TRUE (ifx))
- {
- emitcode ("ljmp", "%05d$", IC_TRUE (ifx)->key + 100);
- emitcode ("", "%05d$:", tlbl->key + 100);
- }
- else
- {
- symbol *lbl = newiTempLabel (NULL);
- emitcode ("sjmp", "%05d$", lbl->key + 100);
- emitcode ("", "%05d$:", tlbl->key + 100);
- emitcode ("ljmp", "%05d$", IC_FALSE (ifx)->key + 100);
- emitcode ("", "%05d$:", lbl->key + 100);
- }
- }
+ {
+ tlbl = newiTempLabel (NULL);
+ gencjneshort (left, right, tlbl);
+ if (IC_TRUE (ifx))
+ {
+ freeForBranchAsmop (result);
+ freeForBranchAsmop (right);
+ freeForBranchAsmop (left);
+ emitcode ("ljmp", "%05d$", IC_TRUE (ifx)->key + 100);
+ emitLabel (tlbl);
+ }
+ else
+ {
+ symbol *lbl = newiTempLabel (NULL);
+ emitcode ("sjmp", "%05d$", lbl->key + 100);
+ emitLabel (tlbl);
+ freeForBranchAsmop (result);
+ freeForBranchAsmop (right);
+ freeForBranchAsmop (left);
+ emitcode ("ljmp", "%05d$", IC_FALSE (ifx)->key + 100);
+ emitLabel (lbl);
+ }
+ }
/* mark the icode as generated */
ifx->generated = 1;
goto release;
((AOP_TYPE (right) == AOP_CRY) || (AOP_TYPE (right) == AOP_LIT)))
{
if (AOP_TYPE (right) == AOP_LIT)
- {
- unsigned long lit = (unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit);
- if (lit == 0L)
- {
- emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
- emitcode ("cpl", "c");
- }
- else if (lit == 1L)
- {
- emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
- }
- else
- {
- emitcode ("clr", "c");
- }
- /* AOP_TYPE(right) == AOP_CRY */
- }
+ {
+ unsigned long lit = (unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit);
+ if (lit == 0L)
+ {
+ emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
+ emitcode ("cpl", "c");
+ }
+ else if (lit == 1L)
+ {
+ emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
+ }
+ else
+ {
+ emitcode ("clr", "c");
+ }
+ /* AOP_TYPE(right) == AOP_CRY */
+ }
else
- {
- symbol *lbl = newiTempLabel (NULL);
- emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
- emitcode ("jb", "%s,%05d$", AOP (right)->aopu.aop_dir, (lbl->key + 100));
- emitcode ("cpl", "c");
- emitcode ("", "%05d$:", (lbl->key + 100));
- }
+ {
+ symbol *lbl = newiTempLabel (NULL);
+ emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
+ emitcode ("jb", "%s,%05d$", AOP (right)->aopu.aop_dir, (lbl->key + 100));
+ emitcode ("cpl", "c");
+ emitLabel (lbl);
+ }
/* c = 1 if egal */
if (AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result))
- {
- outBitC (result);
- goto release;
- }
+ {
+ outBitC (result);
+ goto release;
+ }
if (ifx)
- {
- genIfxJump (ifx, "c");
- goto release;
- }
+ {
+ genIfxJump (ifx, "c", left, right, result);
+ goto release;
+ }
/* if the result is used in an arithmetic operation
then put the result in place */
outBitC (result);
{
gencjne (left, right, newiTempLabel (NULL));
if (AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result))
- {
- aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
- goto release;
- }
+ {
+ aopPut (result, "a", 0);
+ goto release;
+ }
if (ifx)
- {
- genIfxJump (ifx, "a");
- goto release;
- }
+ {
+ genIfxJump (ifx, "a", left, right, result);
+ goto release;
+ }
/* if the result is used in an arithmetic operation
then put the result in place */
if (AOP_TYPE (result) != AOP_CRY)
- outAcc (result);
+ outAcc (result);
/* leave the result in acc */
}
release:
- freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (result, NULL, ic, TRUE);
+ if (!swappedLR)
+ {
+ freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ }
+ else
+ {
+ freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ }
}
/*-----------------------------------------------------------------*/
/* hasInc - operand is incremented before any other use */
/*-----------------------------------------------------------------*/
static iCode *
-hasInc (operand *op, iCode *ic,int osize)
+hasInc (operand *op, iCode *ic, int osize)
{
sym_link *type = operandType(op);
sym_link *retype = getSpec (type);
iCode *lic = ic->next;
int isize ;
-
+
/* this could from a cast, e.g.: "(char xdata *) 0x7654;" */
if (!IS_SYMOP(op)) return NULL;
while (lic) {
/* if operand of the form op = op + <sizeof *op> */
if (lic->op == '+' && isOperandEqual(IC_LEFT(lic),op) &&
- isOperandEqual(IC_RESULT(lic),op) &&
- isOperandLiteral(IC_RIGHT(lic)) &&
- operandLitValue(IC_RIGHT(lic)) == isize) {
+ isOperandEqual(IC_RESULT(lic),op) &&
+ isOperandLiteral(IC_RIGHT(lic)) &&
+ operandLitValue(IC_RIGHT(lic)) == isize) {
return lic;
}
/* if the operand used or deffed */
- if (bitVectBitValue(OP_USES(op),lic->key) || (unsigned) lic->defKey == op->key) {
+ if (bitVectBitValue(OP_USES(op),lic->key) || lic->defKey == op->key) {
return NULL;
}
/* if GOTO or IFX */
operand *left, *right, *result;
symbol *tlbl;
- D(emitcode ("; genAndOp",""));
+ D (emitcode (";", "genAndOp"));
/* note here that && operations that are in an
if statement are taken away by backPatchLabels
toBoolean (left);
emitcode ("jz", "%05d$", tlbl->key + 100);
toBoolean (right);
- emitcode ("", "%05d$:", tlbl->key + 100);
+ emitLabel (tlbl);
outBitAcc (result);
}
+ freeAsmop (result, NULL, ic, TRUE);
freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (result, NULL, ic, TRUE);
}
operand *left, *right, *result;
symbol *tlbl;
- D(emitcode ("; genOrOp",""));
+ D (emitcode (";", "genOrOp"));
/* note here that || operations that are in an
if statement are taken away by backPatchLabels
toBoolean (left);
emitcode ("jnz", "%05d$", tlbl->key + 100);
toBoolean (right);
- emitcode ("", "%05d$:", tlbl->key + 100);
+ emitLabel (tlbl);
outBitAcc (result);
}
+ freeAsmop (result, NULL, ic, TRUE);
freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
/* jmpTrueOrFalse - */
/*-----------------------------------------------------------------*/
static void
-jmpTrueOrFalse (iCode * ic, symbol * tlbl)
+jmpTrueOrFalse (iCode * ic, symbol * tlbl, operand *left, operand *right, operand *result)
{
// ugly but optimized by peephole
if (IC_TRUE (ic))
{
symbol *nlbl = newiTempLabel (NULL);
emitcode ("sjmp", "%05d$", nlbl->key + 100);
- emitcode ("", "%05d$:", tlbl->key + 100);
+ emitLabel (tlbl);
+ freeForBranchAsmop (result);
+ freeForBranchAsmop (right);
+ freeForBranchAsmop (left);
emitcode ("ljmp", "%05d$", IC_TRUE (ic)->key + 100);
- emitcode ("", "%05d$:", nlbl->key + 100);
+ emitLabel (nlbl);
}
else
{
+ freeForBranchAsmop (result);
+ freeForBranchAsmop (right);
+ freeForBranchAsmop (left);
emitcode ("ljmp", "%05d$", IC_FALSE (ic)->key + 100);
- emitcode ("", "%05d$:", tlbl->key + 100);
+ emitLabel (tlbl);
}
ic->generated = 1;
}
int bytelit = 0;
char buffer[10];
- D(emitcode ("; genAnd",""));
+ D (emitcode (";", "genAnd"));
aopOp ((left = IC_LEFT (ic)), ic, FALSE);
aopOp ((right = IC_RIGHT (ic)), ic, FALSE);
#ifdef DEBUG_TYPE
emitcode ("", "; Type res[%d] = l[%d]&r[%d]",
- AOP_TYPE (result),
- AOP_TYPE (left), AOP_TYPE (right));
+ AOP_TYPE (result),
+ AOP_TYPE (left), AOP_TYPE (right));
emitcode ("", "; Size res[%d] = l[%d]&r[%d]",
- AOP_SIZE (result),
- AOP_SIZE (left), AOP_SIZE (right));
+ AOP_SIZE (result),
+ AOP_SIZE (left), AOP_SIZE (right));
#endif
/* if left is a literal & right is not then exchange them */
left = tmp;
}
- /* if result = right then exchange them */
+ /* if result = right then exchange left and right */
if (sameRegs (AOP (result), AOP (right)))
{
operand *tmp = right;
{
// c = bit & literal;
if (AOP_TYPE (right) == AOP_LIT)
- {
- if (lit & 1)
- {
- if (size && sameRegs (AOP (result), AOP (left)))
- // no change
- goto release;
- emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
- }
- else
- {
- // bit(result) = 0;
- if (size && (AOP_TYPE (result) == AOP_CRY))
- {
- emitcode ("clr", "%s", AOP (result)->aopu.aop_dir);
- goto release;
- }
- if ((AOP_TYPE (result) == AOP_CRY) && ifx)
- {
- jumpIfTrue (ifx);
- goto release;
- }
- emitcode ("clr", "c");
- }
- }
+ {
+ if (lit & 1)
+ {
+ if (size && sameRegs (AOP (result), AOP (left)))
+ // no change
+ goto release;
+ emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
+ }
+ else
+ {
+ // bit(result) = 0;
+ if (size && (AOP_TYPE (result) == AOP_CRY))
+ {
+ emitcode ("clr", "%s", AOP (result)->aopu.aop_dir);
+ goto release;
+ }
+ if ((AOP_TYPE (result) == AOP_CRY) && ifx)
+ {
+ jumpIfTrue (ifx);
+ goto release;
+ }
+ emitcode ("clr", "c");
+ }
+ }
else
- {
- if (AOP_TYPE (right) == AOP_CRY)
- {
- // c = bit & bit;
- emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
- emitcode ("anl", "c,%s", AOP (left)->aopu.aop_dir);
- }
- else
- {
- // c = bit & val;
- MOVA (aopGet (AOP (right), 0, FALSE, FALSE));
- // c = lsb
- emitcode ("rrc", "a");
- emitcode ("anl", "c,%s", AOP (left)->aopu.aop_dir);
- }
- }
+ {
+ if (AOP_TYPE (right) == AOP_CRY)
+ {
+ // c = bit & bit;
+ emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
+ emitcode ("anl", "c,%s", AOP (left)->aopu.aop_dir);
+ }
+ else
+ {
+ // c = bit & val;
+ MOVA (aopGet (right, 0, FALSE, FALSE));
+ // c = lsb
+ emitcode ("rrc", "a");
+ emitcode ("anl", "c,%s", AOP (left)->aopu.aop_dir);
+ }
+ }
// bit = c
// val = c
if (size)
- outBitC (result);
+ outBitC (result);
// if(bit & ...)
else if ((AOP_TYPE (result) == AOP_CRY) && ifx)
- genIfxJump (ifx, "c");
+ genIfxJump (ifx, "c", left, right, result);
goto release;
}
int posbit = isLiteralBit (lit);
/* left & 2^n */
if (posbit)
- {
- posbit--;
- MOVA (aopGet (AOP (left), posbit >> 3, FALSE, FALSE));
- // bit = left & 2^n
- if (size)
- emitcode ("mov", "c,acc.%d", posbit & 0x07);
- // if(left & 2^n)
- else
- {
- if (ifx)
- {
- sprintf (buffer, "acc.%d", posbit & 0x07);
- genIfxJump (ifx, buffer);
- }
- goto release;
- }
- }
+ {
+ posbit--;
+ MOVA (aopGet (left, posbit >> 3, FALSE, FALSE));
+ // bit = left & 2^n
+ if (size)
+ {
+ switch (posbit & 0x07)
+ {
+ case 0: emitcode ("rrc", "a");
+ break;
+ case 7: emitcode ("rlc", "a");
+ break;
+ default: emitcode ("mov", "c,acc.%d", posbit & 0x07);
+ break;
+ }
+ }
+ // if(left & 2^n)
+ else
+ {
+ if (ifx)
+ {
+ SNPRINTF (buffer, sizeof(buffer),
+ "acc.%d", posbit & 0x07);
+ genIfxJump (ifx, buffer, left, right, result);
+ }
+ else
+ {// what is this case? just found it in ds390/gen.c
+ emitcode ("anl","a,#!constbyte",1 << (posbit & 0x07));
+ }
+ goto release;
+ }
+ }
else
- {
- symbol *tlbl = newiTempLabel (NULL);
- int sizel = AOP_SIZE (left);
- if (size)
- emitcode ("setb", "c");
- while (sizel--)
- {
- if ((bytelit = ((lit >> (offset * 8)) & 0x0FFL)) != 0x0L)
- {
- MOVA (aopGet (AOP (left), offset, FALSE, FALSE));
- // byte == 2^n ?
- if ((posbit = isLiteralBit (bytelit)) != 0)
- emitcode ("jb", "acc.%d,%05d$", (posbit - 1) & 0x07, tlbl->key + 100);
- else
- {
- if (bytelit != 0x0FFL)
- emitcode ("anl", "a,%s",
- aopGet (AOP (right), offset, FALSE, TRUE));
- emitcode ("jnz", "%05d$", tlbl->key + 100);
- }
- }
- offset++;
- }
- // bit = left & literal
- if (size)
- {
- emitcode ("clr", "c");
- emitcode ("", "%05d$:", tlbl->key + 100);
- }
- // if(left & literal)
- else
- {
- if (ifx)
- jmpTrueOrFalse (ifx, tlbl);
- goto release;
- }
- }
+ {
+ symbol *tlbl = newiTempLabel (NULL);
+ int sizel = AOP_SIZE (left);
+ if (size)
+ emitcode ("setb", "c");
+ while (sizel--)
+ {
+ if ((bytelit = ((lit >> (offset * 8)) & 0x0FFL)) != 0x0L)
+ {
+ MOVA (aopGet (left, offset, FALSE, FALSE));
+ // byte == 2^n ?
+ if ((posbit = isLiteralBit (bytelit)) != 0)
+ emitcode ("jb", "acc.%d,%05d$", (posbit - 1) & 0x07, tlbl->key + 100);
+ else
+ {
+ if (bytelit != 0x0FFL)
+ emitcode ("anl", "a,%s",
+ aopGet (right, offset, FALSE, TRUE));
+ emitcode ("jnz", "%05d$", tlbl->key + 100);
+ }
+ }
+ offset++;
+ }
+ // bit = left & literal
+ if (size)
+ {
+ emitcode ("clr", "c");
+ emitLabel (tlbl);
+ }
+ // if(left & literal)
+ else
+ {
+ if (ifx)
+ jmpTrueOrFalse (ifx, tlbl, left, right, result);
+ else
+ emitLabel (tlbl);
+ goto release;
+ }
+ }
outBitC (result);
goto release;
}
if (sameRegs (AOP (result), AOP (left)))
{
for (; size--; offset++)
- {
- if (AOP_TYPE (right) == AOP_LIT)
- {
- if ((bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL)) == 0x0FF)
- continue;
- else if (bytelit == 0)
- {
- aopPut (AOP (result), zero, offset, isOperandVolatile (result, FALSE));
- }
- else if (IS_AOP_PREG (result))
- {
- MOVA (aopGet (AOP (right), offset, FALSE, FALSE));
- emitcode ("anl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE));
- aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
- }
- else
- emitcode ("anl", "%s,%s",
- aopGet (AOP (left), offset, FALSE, TRUE),
- aopGet (AOP (right), offset, FALSE, FALSE));
- }
- else
- {
- if (AOP_TYPE (left) == AOP_ACC)
- emitcode ("anl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE));
- else
- {
- MOVA (aopGet (AOP (right), offset, FALSE, FALSE));
- if (IS_AOP_PREG (result))
- {
- emitcode ("anl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE));
- aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
-
- }
- else
- emitcode ("anl", "%s,a",
- aopGet (AOP (left), offset, FALSE, TRUE));
- }
- }
- }
+ {
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL);
+ if (bytelit == 0x0FF)
+ {
+ /* dummy read of volatile operand */
+ if (isOperandVolatile (left, FALSE))
+ MOVA (aopGet (left, offset, FALSE, FALSE));
+ else
+ continue;
+ }
+ else if (bytelit == 0)
+ {
+ aopPut (result, zero, offset);
+ }
+ else if (IS_AOP_PREG (result))
+ {
+ MOVA (aopGet (left, offset, FALSE, TRUE));
+ emitcode ("anl", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ aopPut (result, "a", offset);
+ }
+ else
+ emitcode ("anl", "%s,%s",
+ aopGet (left, offset, FALSE, TRUE),
+ aopGet (right, offset, FALSE, FALSE));
+ }
+ else
+ {
+ if (AOP_TYPE (left) == AOP_ACC)
+ {
+ if (offset)
+ emitcode("mov", "a,b");
+ emitcode ("anl", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ }
+ else if (aopGetUsesAcc (left, offset) && aopGetUsesAcc (right, offset))
+ {
+ emitcode ("mov", "b,%s", aopGet (left, offset, FALSE, FALSE));
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ emitcode ("anl", "a,b");
+ aopPut (result, "a", offset);
+ }
+ else if (aopGetUsesAcc (left, offset))
+ {
+ MOVA (aopGet (left, offset, FALSE, FALSE));
+ emitcode ("anl", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ aopPut (result, "a", offset);
+ }
+ else
+ {
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ if (IS_AOP_PREG (result))
+ {
+ emitcode ("anl", "a,%s", aopGet (left, offset, FALSE, TRUE));
+ aopPut (result, "a", offset);
+ }
+ else
+ emitcode ("anl", "%s,a",
+ aopGet (left, offset, FALSE, TRUE));
+ }
+ }
+ }
}
else
{
// left & result in different registers
if (AOP_TYPE (result) == AOP_CRY)
- {
- // result = bit
- // if(size), result in bit
- // if(!size && ifx), conditional oper: if(left & right)
- symbol *tlbl = newiTempLabel (NULL);
- int sizer = min (AOP_SIZE (left), AOP_SIZE (right));
- if (size)
- emitcode ("setb", "c");
- while (sizer--)
- {
- if (AOP_TYPE(right)==AOP_REG && AOP_TYPE(left)==AOP_ACC) {
- emitcode ("anl", "a,%s",
- aopGet (AOP (right), offset, FALSE, FALSE));
- } else {
- if (AOP_TYPE(left)==AOP_ACC) {
- emitcode("mov", "b,a");
- MOVA (aopGet (AOP (right), offset, FALSE, FALSE));
- emitcode("anl", "a,b");
- }else {
- MOVA (aopGet (AOP (right), offset, FALSE, FALSE));
- emitcode ("anl", "a,%s",
- aopGet (AOP (left), offset, FALSE, FALSE));
- }
- }
- emitcode ("jnz", "%05d$", tlbl->key + 100);
- offset++;
- }
- if (size)
- {
- CLRC;
- emitcode ("", "%05d$:", tlbl->key + 100);
- outBitC (result);
- }
- else if (ifx)
- jmpTrueOrFalse (ifx, tlbl);
- }
+ {
+ // result = bit
+ // if(size), result in bit
+ // if(!size && ifx), conditional oper: if(left & right)
+ symbol *tlbl = newiTempLabel (NULL);
+ int sizer = min (AOP_SIZE (left), AOP_SIZE (right));
+ if (size)
+ emitcode ("setb", "c");
+ while (sizer--)
+ {
+ if ((AOP_TYPE(right)==AOP_REG || IS_AOP_PREG(right) || AOP_TYPE(right)==AOP_DIR)
+ && AOP_TYPE(left)==AOP_ACC)
+ {
+ if (offset)
+ emitcode("mov", "a,b");
+ emitcode ("anl", "a,%s",
+ aopGet (right, offset, FALSE, FALSE));
+ } else {
+ if (AOP_TYPE(left)==AOP_ACC)
+ {
+ if (!offset)
+ {
+ bool pushedB = pushB ();
+ emitcode("mov", "b,a");
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ emitcode("anl", "a,b");
+ popB (pushedB);
+ }
+ else
+ {
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ emitcode("anl", "a,b");
+ }
+ } else {
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ emitcode ("anl", "a,%s",
+ aopGet (left, offset, FALSE, FALSE));
+ }
+ }
+ emitcode ("jnz", "%05d$", tlbl->key + 100);
+ offset++;
+ }
+ if (size)
+ {
+ CLRC;
+ emitLabel (tlbl);
+ outBitC (result);
+ }
+ else if (ifx)
+ jmpTrueOrFalse (ifx, tlbl, left, right, result);
+ else
+ emitLabel (tlbl);
+ }
else
- {
- for (; (size--); offset++)
- {
- // normal case
- // result = left & right
- if (AOP_TYPE (right) == AOP_LIT)
- {
- if ((bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL)) == 0x0FF)
- {
- aopPut (AOP (result),
- aopGet (AOP (left), offset, FALSE, FALSE),
- offset,
- isOperandVolatile (result, FALSE));
- continue;
- }
- else if (bytelit == 0)
- {
- /* dummy read of volatile operand */
- if (isOperandVolatile (left, FALSE))
- MOVA (aopGet (AOP (left), offset, FALSE, FALSE));
- aopPut (AOP (result), zero, offset, isOperandVolatile (result, FALSE));
- continue;
- }
- }
- // faster than result <- left, anl result,right
- // and better if result is SFR
- if (AOP_TYPE (left) == AOP_ACC)
- emitcode ("anl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE));
- else
- {
- MOVA (aopGet (AOP (right), offset, FALSE, FALSE));
- emitcode ("anl", "a,%s",
- aopGet (AOP (left), offset, FALSE, FALSE));
- }
- aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
- }
- }
+ {
+ for (; (size--); offset++)
+ {
+ // normal case
+ // result = left & right
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL);
+ if (bytelit == 0x0FF)
+ {
+ aopPut (result,
+ aopGet (left, offset, FALSE, FALSE),
+ offset);
+ continue;
+ }
+ else if (bytelit == 0)
+ {
+ /* dummy read of volatile operand */
+ if (isOperandVolatile (left, FALSE))
+ MOVA (aopGet (left, offset, FALSE, FALSE));
+ aopPut (result, zero, offset);
+ continue;
+ }
+ else if (AOP_TYPE (left) == AOP_ACC)
+ {
+ if (!offset)
+ {
+ emitcode ("anl", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ aopPut (result, "a", offset);
+ continue;
+ }
+ else
+ {
+ emitcode ("anl", "b,%s", aopGet (right, offset, FALSE, FALSE));
+ aopPut (result, "b", offset);
+ continue;
+ }
+ }
+ }
+ // faster than result <- left, anl result,right
+ // and better if result is SFR
+ if (AOP_TYPE (left) == AOP_ACC)
+ {
+ if (offset)
+ emitcode("mov", "a,b");
+ emitcode ("anl", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ }
+ else if (aopGetUsesAcc (left, offset) && aopGetUsesAcc (right, offset))
+ {
+ emitcode ("mov", "b,%s", aopGet (left, offset, FALSE, FALSE));
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ emitcode ("anl", "a,b");
+ }
+ else if (aopGetUsesAcc (left, offset))
+ {
+ MOVA (aopGet (left, offset, FALSE, FALSE));
+ emitcode ("anl", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ }
+ else
+ {
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ emitcode ("anl", "a,%s", aopGet (left, offset, FALSE, FALSE));
+ }
+ aopPut (result, "a", offset);
+ }
+ }
}
release:
+ freeAsmop (result, NULL, ic, TRUE);
freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
operand *left, *right, *result;
int size, offset = 0;
unsigned long lit = 0L;
+ int bytelit = 0;
- D(emitcode ("; genOr",""));
+ D (emitcode (";", "genOr"));
aopOp ((left = IC_LEFT (ic)), ic, FALSE);
aopOp ((right = IC_RIGHT (ic)), ic, FALSE);
#ifdef DEBUG_TYPE
emitcode ("", "; Type res[%d] = l[%d]&r[%d]",
- AOP_TYPE (result),
- AOP_TYPE (left), AOP_TYPE (right));
+ AOP_TYPE (result),
+ AOP_TYPE (left), AOP_TYPE (right));
emitcode ("", "; Size res[%d] = l[%d]&r[%d]",
- AOP_SIZE (result),
- AOP_SIZE (left), AOP_SIZE (right));
+ AOP_SIZE (result),
+ AOP_SIZE (left), AOP_SIZE (right));
#endif
/* if left is a literal & right is not then exchange them */
if (AOP_TYPE (left) == AOP_CRY)
{
if (AOP_TYPE (right) == AOP_LIT)
- {
- // c = bit | literal;
- if (lit)
- {
- // lit != 0 => result = 1
- if (AOP_TYPE (result) == AOP_CRY)
- {
- if (size)
- emitcode ("setb", "%s", AOP (result)->aopu.aop_dir);
- else if (ifx)
- continueIfTrue (ifx);
- goto release;
- }
- emitcode ("setb", "c");
- }
- else
- {
- // lit == 0 => result = left
- if (size && sameRegs (AOP (result), AOP (left)))
- goto release;
- emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
- }
- }
+ {
+ // c = bit | literal;
+ if (lit)
+ {
+ // lit != 0 => result = 1
+ if (AOP_TYPE (result) == AOP_CRY)
+ {
+ if (size)
+ emitcode ("setb", "%s", AOP (result)->aopu.aop_dir);
+ else if (ifx)
+ continueIfTrue (ifx);
+ goto release;
+ }
+ emitcode ("setb", "c");
+ }
+ else
+ {
+ // lit == 0 => result = left
+ if (size && sameRegs (AOP (result), AOP (left)))
+ goto release;
+ emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
+ }
+ }
else
- {
- if (AOP_TYPE (right) == AOP_CRY)
- {
- // c = bit | bit;
- emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
- emitcode ("orl", "c,%s", AOP (left)->aopu.aop_dir);
- }
- else
- {
- // c = bit | val;
- symbol *tlbl = newiTempLabel (NULL);
- if (!((AOP_TYPE (result) == AOP_CRY) && ifx))
- emitcode ("setb", "c");
- emitcode ("jb", "%s,%05d$",
- AOP (left)->aopu.aop_dir, tlbl->key + 100);
- toBoolean (right);
- emitcode ("jnz", "%05d$", tlbl->key + 100);
- if ((AOP_TYPE (result) == AOP_CRY) && ifx)
- {
- jmpTrueOrFalse (ifx, tlbl);
- goto release;
- }
- else
- {
- CLRC;
- emitcode ("", "%05d$:", tlbl->key + 100);
- }
- }
- }
+ {
+ if (AOP_TYPE (right) == AOP_CRY)
+ {
+ // c = bit | bit;
+ emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
+ emitcode ("orl", "c,%s", AOP (left)->aopu.aop_dir);
+ }
+ else
+ {
+ // c = bit | val;
+ symbol *tlbl = newiTempLabel (NULL);
+ if (!((AOP_TYPE (result) == AOP_CRY) && ifx))
+ emitcode ("setb", "c");
+ emitcode ("jb", "%s,%05d$",
+ AOP (left)->aopu.aop_dir, tlbl->key + 100);
+ toBoolean (right);
+ emitcode ("jnz", "%05d$", tlbl->key + 100);
+ if ((AOP_TYPE (result) == AOP_CRY) && ifx)
+ {
+ jmpTrueOrFalse (ifx, tlbl, left, right, result);
+ goto release;
+ }
+ else
+ {
+ CLRC;
+ emitLabel (tlbl);
+ }
+ }
+ }
// bit = c
// val = c
if (size)
- outBitC (result);
+ outBitC (result);
// if(bit | ...)
else if ((AOP_TYPE (result) == AOP_CRY) && ifx)
- genIfxJump (ifx, "c");
+ genIfxJump (ifx, "c", left, right, result);
goto release;
}
(AOP_TYPE (left) != AOP_CRY))
{
if (lit)
- {
- // result = 1
- if (size)
- emitcode ("setb", "%s", AOP (result)->aopu.aop_dir);
- else
- continueIfTrue (ifx);
- goto release;
- }
+ {
+ // result = 1
+ if (size)
+ emitcode ("setb", "%s", AOP (result)->aopu.aop_dir);
+ else
+ continueIfTrue (ifx);
+ goto release;
+ }
else
- {
- // lit = 0, result = boolean(left)
- if (size)
- emitcode ("setb", "c");
- toBoolean (right);
- if (size)
- {
- symbol *tlbl = newiTempLabel (NULL);
- emitcode ("jnz", "%05d$", tlbl->key + 100);
- CLRC;
- emitcode ("", "%05d$:", tlbl->key + 100);
- }
- else
- {
- genIfxJump (ifx, "a");
- goto release;
- }
- }
+ {
+ // lit = 0, result = boolean(left)
+ if (size)
+ emitcode ("setb", "c");
+ toBoolean (right);
+ if (size)
+ {
+ symbol *tlbl = newiTempLabel (NULL);
+ emitcode ("jnz", "%05d$", tlbl->key + 100);
+ CLRC;
+ emitLabel (tlbl);
+ }
+ else
+ {
+ genIfxJump (ifx, "a", left, right, result);
+ goto release;
+ }
+ }
outBitC (result);
goto release;
}
if (sameRegs (AOP (result), AOP (left)))
{
for (; size--; offset++)
- {
- if (AOP_TYPE (right) == AOP_LIT)
- {
- if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)
- {
- /* dummy read of volatile operand */
- if (isOperandVolatile (left, FALSE))
- MOVA (aopGet (AOP (left), offset, FALSE, FALSE));
- else
- continue;
- }
- else if (IS_AOP_PREG (left))
- {
- MOVA (aopGet (AOP (right), offset, FALSE, FALSE));
- emitcode ("orl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE));
- aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
- }
- else
- emitcode ("orl", "%s,%s",
- aopGet (AOP (left), offset, FALSE, TRUE),
- aopGet (AOP (right), offset, FALSE, FALSE));
- }
- else
- {
- if (AOP_TYPE (left) == AOP_ACC)
- emitcode ("orl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE));
- else
- {
- MOVA (aopGet (AOP (right), offset, FALSE, FALSE));
- if (IS_AOP_PREG (left))
- {
- emitcode ("orl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE));
- aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
- }
- else
- emitcode ("orl", "%s,a",
- aopGet (AOP (left), offset, FALSE, TRUE));
- }
- }
- }
+ {
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL);
+ if (bytelit == 0)
+ {
+ /* dummy read of volatile operand */
+ if (isOperandVolatile (left, FALSE))
+ MOVA (aopGet (left, offset, FALSE, FALSE));
+ else
+ continue;
+ }
+ else if (bytelit == 0x0FF)
+ {
+ aopPut (result, "#0xFF", offset);
+ }
+ else if (IS_AOP_PREG (left))
+ {
+ MOVA (aopGet (left, offset, FALSE, TRUE));
+ emitcode ("orl", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ aopPut (result, "a", offset);
+ }
+ else
+ {
+ emitcode ("orl", "%s,%s",
+ aopGet (left, offset, FALSE, TRUE),
+ aopGet (right, offset, FALSE, FALSE));
+ }
+ }
+ else
+ {
+ if (AOP_TYPE (left) == AOP_ACC)
+ {
+ if (offset)
+ emitcode("mov", "a,b");
+ emitcode ("orl", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ }
+ else if (aopGetUsesAcc (left, offset) && aopGetUsesAcc (right, offset))
+ {
+ emitcode ("mov", "b,%s", aopGet (left, offset, FALSE, FALSE));
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ emitcode ("orl", "a,b");
+ aopPut (result, "a", offset);
+ }
+ else if (aopGetUsesAcc (left, offset))
+ {
+ MOVA (aopGet (left, offset, FALSE, FALSE));
+ emitcode ("orl", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ aopPut (result, "a", offset);
+ }
+ else
+ {
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ if (IS_AOP_PREG (left))
+ {
+ emitcode ("orl", "a,%s", aopGet (left, offset, FALSE, TRUE));
+ aopPut (result, "a", offset);
+ }
+ else
+ {
+ emitcode ("orl", "%s,a",
+ aopGet (left, offset, FALSE, TRUE));
+ }
+ }
+ }
+ }
}
else
{
// left & result in different registers
if (AOP_TYPE (result) == AOP_CRY)
- {
- // result = bit
- // if(size), result in bit
- // if(!size && ifx), conditional oper: if(left | right)
- symbol *tlbl = newiTempLabel (NULL);
- int sizer = max (AOP_SIZE (left), AOP_SIZE (right));
- if (size)
- emitcode ("setb", "c");
- while (sizer--)
- {
- if (AOP_TYPE(right)==AOP_REG && AOP_TYPE(left)==AOP_ACC) {
- emitcode ("orl", "a,%s",
- aopGet (AOP (right), offset, FALSE, FALSE));
- } else {
- MOVA (aopGet (AOP (right), offset, FALSE, FALSE));
- emitcode ("orl", "a,%s",
- aopGet (AOP (left), offset, FALSE, FALSE));
- }
- emitcode ("jnz", "%05d$", tlbl->key + 100);
- offset++;
- }
- if (size)
- {
- CLRC;
- emitcode ("", "%05d$:", tlbl->key + 100);
- outBitC (result);
- }
- else if (ifx)
- jmpTrueOrFalse (ifx, tlbl);
- }
+ {
+ // result = bit
+ // if(size), result in bit
+ // if(!size && ifx), conditional oper: if(left | right)
+ symbol *tlbl = newiTempLabel (NULL);
+ int sizer = max (AOP_SIZE (left), AOP_SIZE (right));
+ if (size)
+ emitcode ("setb", "c");
+ while (sizer--)
+ {
+ if (AOP_TYPE(right)==AOP_REG && AOP_TYPE(left)==AOP_ACC) {
+ if (offset)
+ emitcode("mov", "a,b");
+ emitcode ("orl", "a,%s",
+ aopGet (right, offset, FALSE, FALSE));
+ } else {
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ emitcode ("orl", "a,%s",
+ aopGet (left, offset, FALSE, FALSE));
+ }
+ emitcode ("jnz", "%05d$", tlbl->key + 100);
+ offset++;
+ }
+ if (size)
+ {
+ CLRC;
+ emitLabel (tlbl);
+ outBitC (result);
+ }
+ else if (ifx)
+ jmpTrueOrFalse (ifx, tlbl, left, right, result);
+ else
+ emitLabel (tlbl);
+ }
else
- for (; (size--); offset++)
- {
- // normal case
- // result = left & right
- if (AOP_TYPE (right) == AOP_LIT)
- {
- if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)
- {
- aopPut (AOP (result),
- aopGet (AOP (left), offset, FALSE, FALSE),
- offset,
- isOperandVolatile (result, FALSE));
- continue;
- }
- }
- // faster than result <- left, anl result,right
- // and better if result is SFR
- if (AOP_TYPE (left) == AOP_ACC)
- emitcode ("orl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE));
- else
- {
- MOVA (aopGet (AOP (right), offset, FALSE, FALSE));
- emitcode ("orl", "a,%s",
- aopGet (AOP (left), offset, FALSE, FALSE));
- }
- aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
- }
+ {
+ for (; (size--); offset++)
+ {
+ // normal case
+ // result = left | right
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL);
+ if (bytelit == 0)
+ {
+ aopPut (result,
+ aopGet (left, offset, FALSE, FALSE),
+ offset);
+ continue;
+ }
+ else if (bytelit == 0x0FF)
+ {
+ /* dummy read of volatile operand */
+ if (isOperandVolatile (left, FALSE))
+ MOVA (aopGet (left, offset, FALSE, FALSE));
+ aopPut (result, "#0xFF", offset);
+ continue;
+ }
+ }
+ // faster than result <- left, anl result,right
+ // and better if result is SFR
+ if (AOP_TYPE (left) == AOP_ACC)
+ {
+ if (offset)
+ emitcode("mov", "a,b");
+ emitcode ("orl", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ }
+ else if (aopGetUsesAcc (left, offset) && aopGetUsesAcc (right, offset))
+ {
+ emitcode ("mov", "b,%s", aopGet (left, offset, FALSE, FALSE));
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ emitcode ("orl", "a,b");
+ }
+ else if (aopGetUsesAcc (left, offset))
+ {
+ MOVA (aopGet (left, offset, FALSE, FALSE));
+ emitcode ("orl", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ }
+ else
+ {
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ emitcode ("orl", "a,%s", aopGet (left, offset, FALSE, FALSE));
+ }
+ aopPut (result, "a", offset);
+ }
+ }
}
release:
+ freeAsmop (result, NULL, ic, TRUE);
freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
operand *left, *right, *result;
int size, offset = 0;
unsigned long lit = 0L;
+ int bytelit = 0;
- D(emitcode ("; genXor",""));
+ D (emitcode (";", "genXor"));
aopOp ((left = IC_LEFT (ic)), ic, FALSE);
aopOp ((right = IC_RIGHT (ic)), ic, FALSE);
#ifdef DEBUG_TYPE
emitcode ("", "; Type res[%d] = l[%d]&r[%d]",
- AOP_TYPE (result),
- AOP_TYPE (left), AOP_TYPE (right));
+ AOP_TYPE (result),
+ AOP_TYPE (left), AOP_TYPE (right));
emitcode ("", "; Size res[%d] = l[%d]&r[%d]",
- AOP_SIZE (result),
- AOP_SIZE (left), AOP_SIZE (right));
+ AOP_SIZE (result),
+ AOP_SIZE (left), AOP_SIZE (right));
#endif
/* if left is a literal & right is not ||
if (AOP_TYPE (left) == AOP_CRY)
{
if (AOP_TYPE (right) == AOP_LIT)
- {
- // c = bit & literal;
- if (lit >> 1)
- {
- // lit>>1 != 0 => result = 1
- if (AOP_TYPE (result) == AOP_CRY)
- {
- if (size)
- emitcode ("setb", "%s", AOP (result)->aopu.aop_dir);
- else if (ifx)
- continueIfTrue (ifx);
- goto release;
- }
- emitcode ("setb", "c");
- }
- else
- {
- // lit == (0 or 1)
- if (lit == 0)
- {
- // lit == 0, result = left
- if (size && sameRegs (AOP (result), AOP (left)))
- goto release;
- emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
- }
- else
- {
- // lit == 1, result = not(left)
- if (size && sameRegs (AOP (result), AOP (left)))
- {
- emitcode ("cpl", "%s", AOP (result)->aopu.aop_dir);
- goto release;
- }
- else
- {
- emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
- emitcode ("cpl", "c");
- }
- }
- }
-
- }
+ {
+ // c = bit & literal;
+ if (lit >> 1)
+ {
+ // lit>>1 != 0 => result = 1
+ if (AOP_TYPE (result) == AOP_CRY)
+ {
+ if (size)
+ emitcode ("setb", "%s", AOP (result)->aopu.aop_dir);
+ else if (ifx)
+ continueIfTrue (ifx);
+ goto release;
+ }
+ emitcode ("setb", "c");
+ }
+ else
+ {
+ // lit == (0 or 1)
+ if (lit == 0)
+ {
+ // lit == 0, result = left
+ if (size && sameRegs (AOP (result), AOP (left)))
+ goto release;
+ emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
+ }
+ else
+ {
+ // lit == 1, result = not(left)
+ if (size && sameRegs (AOP (result), AOP (left)))
+ {
+ emitcode ("cpl", "%s", AOP (result)->aopu.aop_dir);
+ goto release;
+ }
+ else
+ {
+ emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
+ emitcode ("cpl", "c");
+ }
+ }
+ }
+
+ }
else
- {
- // right != literal
- symbol *tlbl = newiTempLabel (NULL);
- if (AOP_TYPE (right) == AOP_CRY)
- {
- // c = bit ^ bit;
- emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
- }
- else
- {
- int sizer = AOP_SIZE (right);
- // c = bit ^ val
- // if val>>1 != 0, result = 1
- emitcode ("setb", "c");
- while (sizer)
- {
- MOVA (aopGet (AOP (right), sizer - 1, FALSE, FALSE));
- if (sizer == 1)
- // test the msb of the lsb
- emitcode ("anl", "a,#0xfe");
- emitcode ("jnz", "%05d$", tlbl->key + 100);
- sizer--;
- }
- // val = (0,1)
- emitcode ("rrc", "a");
- }
- emitcode ("jnb", "%s,%05d$", AOP (left)->aopu.aop_dir, (tlbl->key + 100));
- emitcode ("cpl", "c");
- emitcode ("", "%05d$:", (tlbl->key + 100));
- }
+ {
+ // right != literal
+ symbol *tlbl = newiTempLabel (NULL);
+ if (AOP_TYPE (right) == AOP_CRY)
+ {
+ // c = bit ^ bit;
+ emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
+ }
+ else
+ {
+ int sizer = AOP_SIZE (right);
+ // c = bit ^ val
+ // if val>>1 != 0, result = 1
+ emitcode ("setb", "c");
+ while (sizer)
+ {
+ MOVA (aopGet (right, sizer - 1, FALSE, FALSE));
+ if (sizer == 1)
+ // test the msb of the lsb
+ emitcode ("anl", "a,#0xfe");
+ emitcode ("jnz", "%05d$", tlbl->key + 100);
+ sizer--;
+ }
+ // val = (0,1)
+ emitcode ("rrc", "a");
+ }
+ emitcode ("jnb", "%s,%05d$", AOP (left)->aopu.aop_dir, (tlbl->key + 100));
+ emitcode ("cpl", "c");
+ emitLabel (tlbl);
+ }
// bit = c
// val = c
if (size)
- outBitC (result);
+ outBitC (result);
// if(bit | ...)
else if ((AOP_TYPE (result) == AOP_CRY) && ifx)
- genIfxJump (ifx, "c");
+ genIfxJump (ifx, "c", left, right, result);
goto release;
}
+ /* if left is same as result */
if (sameRegs (AOP (result), AOP (left)))
{
- /* if left is same as result */
for (; size--; offset++)
- {
- if (AOP_TYPE (right) == AOP_LIT)
- {
- if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)
- continue;
- else if (IS_AOP_PREG (left))
- {
- MOVA (aopGet (AOP (right), offset, FALSE, FALSE));
- emitcode ("xrl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE));
- aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
- }
- else
- emitcode ("xrl", "%s,%s",
- aopGet (AOP (left), offset, FALSE, TRUE),
- aopGet (AOP (right), offset, FALSE, FALSE));
- }
- else
- {
- if (AOP_TYPE (left) == AOP_ACC)
- emitcode ("xrl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE));
- else
- {
- MOVA (aopGet (AOP (right), offset, FALSE, FALSE));
- if (IS_AOP_PREG (left))
- {
- emitcode ("xrl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE));
- aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
- }
- else
- emitcode ("xrl", "%s,a",
- aopGet (AOP (left), offset, FALSE, TRUE));
- }
- }
- }
+ {
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL);
+ if (bytelit == 0)
+ {
+ /* dummy read of volatile operand */
+ if (isOperandVolatile (left, FALSE))
+ MOVA (aopGet (left, offset, FALSE, FALSE));
+ else
+ continue;
+ }
+ else if (IS_AOP_PREG (left))
+ {
+ MOVA (aopGet (left, offset, FALSE, TRUE));
+ emitcode ("xrl", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ aopPut (result, "a", offset);
+ }
+ else
+ {
+ emitcode ("xrl", "%s,%s",
+ aopGet (left, offset, FALSE, TRUE),
+ aopGet (right, offset, FALSE, FALSE));
+ }
+ }
+ else
+ {
+ if (AOP_TYPE (left) == AOP_ACC)
+ {
+ if (offset)
+ emitcode("mov", "a,b");
+ emitcode ("xrl", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ }
+ else if (aopGetUsesAcc (left, offset) && aopGetUsesAcc (right, offset))
+ {
+ emitcode ("mov", "b,%s", aopGet (left, offset, FALSE, FALSE));
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ emitcode ("xrl", "a,b");
+ aopPut (result, "a", offset);
+ }
+ else if (aopGetUsesAcc (left, offset))
+ {
+ MOVA (aopGet (left, offset, FALSE, FALSE));
+ emitcode ("xrl", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ aopPut (result, "a", offset);
+ }
+ else
+ {
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ if (IS_AOP_PREG (left))
+ {
+ emitcode ("xrl", "a,%s", aopGet (left, offset, FALSE, TRUE));
+ aopPut (result, "a", offset);
+ }
+ else
+ emitcode ("xrl", "%s,a",
+ aopGet (left, offset, FALSE, TRUE));
+ }
+ }
+ }
}
else
{
// left & result in different registers
if (AOP_TYPE (result) == AOP_CRY)
- {
- // result = bit
- // if(size), result in bit
- // if(!size && ifx), conditional oper: if(left ^ right)
- symbol *tlbl = newiTempLabel (NULL);
- int sizer = max (AOP_SIZE (left), AOP_SIZE (right));
- if (size)
- emitcode ("setb", "c");
- while (sizer--)
- {
- if ((AOP_TYPE (right) == AOP_LIT) &&
- (((lit >> (offset * 8)) & 0x0FFL) == 0x00L))
- {
- MOVA (aopGet (AOP (left), offset, FALSE, FALSE));
- }
- else
- {
- if (AOP_TYPE(right)==AOP_REG && AOP_TYPE(left)==AOP_ACC) {
- emitcode ("xrl", "a,%s",
- aopGet (AOP (right), offset, FALSE, FALSE));
- } else {
- MOVA (aopGet (AOP (right), offset, FALSE, FALSE));
- emitcode ("xrl", "a,%s",
- aopGet (AOP (left), offset, FALSE, FALSE));
- }
- }
- emitcode ("jnz", "%05d$", tlbl->key + 100);
- offset++;
- }
- if (size)
- {
- CLRC;
- emitcode ("", "%05d$:", tlbl->key + 100);
- outBitC (result);
- }
- else if (ifx)
- jmpTrueOrFalse (ifx, tlbl);
- }
+ {
+ // result = bit
+ // if(size), result in bit
+ // if(!size && ifx), conditional oper: if(left ^ right)
+ symbol *tlbl = newiTempLabel (NULL);
+ int sizer = max (AOP_SIZE (left), AOP_SIZE (right));
+
+ if (size)
+ emitcode ("setb", "c");
+ while (sizer--)
+ {
+ if ((AOP_TYPE (right) == AOP_LIT) &&
+ (((lit >> (offset * 8)) & 0x0FFL) == 0x00L))
+ {
+ MOVA (aopGet (left, offset, FALSE, FALSE));
+ }
+ else
+ {
+ if (AOP_TYPE(right)==AOP_REG && AOP_TYPE(left)==AOP_ACC) {
+ if (offset)
+ emitcode("mov", "a,b");
+ emitcode ("xrl", "a,%s",
+ aopGet (right, offset, FALSE, FALSE));
+ } else {
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ emitcode ("xrl", "a,%s",
+ aopGet (left, offset, FALSE, FALSE));
+ }
+ }
+ emitcode ("jnz", "%05d$", tlbl->key + 100);
+ offset++;
+ }
+ if (size)
+ {
+ CLRC;
+ emitLabel (tlbl);
+ outBitC (result);
+ }
+ else if (ifx)
+ jmpTrueOrFalse (ifx, tlbl, left, right, result);
+ }
else
- for (; (size--); offset++)
- {
- // normal case
- // result = left & right
- if (AOP_TYPE (right) == AOP_LIT)
- {
- if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)
- {
- aopPut (AOP (result),
- aopGet (AOP (left), offset, FALSE, FALSE),
- offset,
- isOperandVolatile (result, FALSE));
- continue;
- }
- }
- // faster than result <- left, anl result,right
- // and better if result is SFR
- if (AOP_TYPE (left) == AOP_ACC)
- emitcode ("xrl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE));
- else
- {
- MOVA (aopGet (AOP (right), offset, FALSE, FALSE));
- emitcode ("xrl", "a,%s",
- aopGet (AOP (left), offset, FALSE, TRUE));
- }
- aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
- }
+ {
+ for (; (size--); offset++)
+ {
+ // normal case
+ // result = left ^ right
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL);
+ if (bytelit == 0)
+ {
+ aopPut (result,
+ aopGet (left, offset, FALSE, FALSE),
+ offset);
+ continue;
+ }
+ }
+ // faster than result <- left, anl result,right
+ // and better if result is SFR
+ if (AOP_TYPE (left) == AOP_ACC)
+ {
+ if (offset)
+ emitcode("mov", "a,b");
+ emitcode ("xrl", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ }
+ else if (aopGetUsesAcc (left, offset) && aopGetUsesAcc (right, offset))
+ {
+ emitcode ("mov", "b,%s", aopGet (left, offset, FALSE, FALSE));
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ emitcode ("xrl", "a,b");
+ }
+ else if (aopGetUsesAcc (left, offset))
+ {
+ MOVA (aopGet (left, offset, FALSE, FALSE));
+ emitcode ("xrl", "a,%s", aopGet (right, offset, FALSE, FALSE));
+ }
+ else
+ {
+ MOVA (aopGet (right, offset, FALSE, FALSE));
+ emitcode ("xrl", "a,%s", aopGet (left, offset, FALSE, TRUE));
+ }
+ aopPut (result, "a", offset);
+ }
+ }
}
release:
+ freeAsmop (result, NULL, ic, TRUE);
freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
{
char *buffer, *bp, *bp1;
- D(emitcode ("; genInline",""));
+ D (emitcode (";", "genInline"));
_G.inLine += (!options.asmpeep);
- buffer = bp = bp1 = Safe_calloc(1, strlen(IC_INLINE(ic))+1);
- strcpy (buffer, IC_INLINE (ic));
+ buffer = bp = bp1 = Safe_strdup(IC_INLINE(ic));
/* emit each line as a code */
while (*bp)
{
if (*bp == '\n')
- {
- *bp++ = '\0';
- emitcode (bp1, "");
- bp1 = bp;
- }
+ {
+ *bp++ = '\0';
+ emitcode (bp1, "");
+ bp1 = bp;
+ }
else
- {
- if (*bp == ':')
- {
- bp++;
- *bp = '\0';
- bp++;
- emitcode (bp1, "");
- bp1 = bp;
- }
- else
- bp++;
- }
+ {
+ /* Add \n for labels, not dirs such as c:\mydir */
+ if ( (*bp == ':') && (isspace((unsigned char)bp[1])) )
+ {
+ bp++;
+ *bp = '\0';
+ bp++;
+ emitcode (bp1, "");
+ bp1 = bp;
+ }
+ else
+ bp++;
+ }
}
if (bp1 != bp)
emitcode (bp1, "");
genRRC (iCode * ic)
{
operand *left, *result;
- int size, offset = 0;
+ int size, offset;
char *l;
- D(emitcode ("; genRRC",""));
+ D (emitcode (";", "genRRC"));
/* rotate right with carry */
left = IC_LEFT (ic);
size = AOP_SIZE (result);
offset = size - 1;
if (size == 1) { /* special case for 1 byte */
- l = aopGet (AOP (left), offset, FALSE, FALSE);
+ l = aopGet (left, offset, FALSE, FALSE);
MOVA (l);
emitcode ("rr", "a");
goto release;
}
- CLRC;
+ /* no need to clear carry, bit7 will be written later */
while (size--)
{
- l = aopGet (AOP (left), offset, FALSE, FALSE);
+ l = aopGet (left, offset, FALSE, FALSE);
MOVA (l);
emitcode ("rrc", "a");
if (AOP_SIZE (result) > 1)
- aopPut (AOP (result), "a", offset--, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", offset--);
}
/* now we need to put the carry into the
highest order byte of the result */
if (AOP_SIZE (result) > 1)
{
- l = aopGet (AOP (result), AOP_SIZE (result) - 1, FALSE, FALSE);
+ l = aopGet (result, AOP_SIZE (result) - 1, FALSE, FALSE);
MOVA (l);
}
emitcode ("mov", "acc.7,c");
release:
- aopPut (AOP (result), "a", AOP_SIZE (result) - 1, isOperandVolatile (result, FALSE));
- freeAsmop (left, NULL, ic, TRUE);
+ aopPut (result, "a", AOP_SIZE (result) - 1);
freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (left, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
genRLC (iCode * ic)
{
operand *left, *result;
- int size, offset = 0;
+ int size, offset;
char *l;
- D(emitcode ("; genRLC",""));
+ D (emitcode (";", "genRLC"));
/* rotate right with carry */
left = IC_LEFT (ic);
offset = 0;
if (size--)
{
- l = aopGet (AOP (left), offset, FALSE, FALSE);
+ l = aopGet (left, offset, FALSE, FALSE);
MOVA (l);
if (size == 0) { /* special case for 1 byte */
- emitcode("rl","a");
- goto release;
+ emitcode("rl","a");
+ goto release;
}
- emitcode ("add", "a,acc");
+ emitcode("rlc","a"); /* bit0 will be written later */
if (AOP_SIZE (result) > 1)
- aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
+ {
+ aopPut (result, "a", offset++);
+ }
+
while (size--)
- {
- l = aopGet (AOP (left), offset, FALSE, FALSE);
- MOVA (l);
- emitcode ("rlc", "a");
- if (AOP_SIZE (result) > 1)
- aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
- }
+ {
+ l = aopGet (left, offset, FALSE, FALSE);
+ MOVA (l);
+ emitcode ("rlc", "a");
+ if (AOP_SIZE (result) > 1)
+ aopPut (result, "a", offset++);
+ }
}
/* now we need to put the carry into the
highest order byte of the result */
if (AOP_SIZE (result) > 1)
{
- l = aopGet (AOP (result), 0, FALSE, FALSE);
+ l = aopGet (result, 0, FALSE, FALSE);
MOVA (l);
}
emitcode ("mov", "acc.0,c");
release:
- aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
- freeAsmop (left, NULL, ic, TRUE);
+ aopPut (result, "a", 0);
freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (left, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
{
operand *left, *result;
- D(emitcode ("; genGetHbit",""));
+ D (emitcode (";", "genGetHbit"));
left = IC_LEFT (ic);
result = IC_RESULT (ic);
aopOp (result, ic, FALSE);
/* get the highest order byte into a */
- MOVA (aopGet (AOP (left), AOP_SIZE (left) - 1, FALSE, FALSE));
+ MOVA (aopGet (left, AOP_SIZE (left) - 1, FALSE, FALSE));
if (AOP_TYPE (result) == AOP_CRY)
{
emitcode ("rlc", "a");
outAcc (result);
}
+ freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (left, NULL, ic, TRUE);
+}
+
+/*-----------------------------------------------------------------*/
+/* genGetAbit - generates code get a single bit */
+/*-----------------------------------------------------------------*/
+static void
+genGetAbit (iCode * ic)
+{
+ operand *left, *right, *result;
+ int shCount;
+
+ D (emitcode (";", "genGetAbit"));
+
+ left = IC_LEFT (ic);
+ right = IC_RIGHT (ic);
+ result = IC_RESULT (ic);
+ aopOp (left, ic, FALSE);
+ aopOp (right, ic, FALSE);
+ aopOp (result, ic, FALSE);
+
+ shCount = (int) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit);
+
+ /* get the needed byte into a */
+ MOVA (aopGet (left, shCount / 8, FALSE, FALSE));
+ shCount %= 8;
+ if (AOP_TYPE (result) == AOP_CRY)
+ {
+ if ((shCount) == 7)
+ emitcode ("rlc", "a");
+ else if ((shCount) == 0)
+ emitcode ("rrc", "a");
+ else
+ emitcode ("mov", "c,acc[%d]", shCount);
+ outBitC (result);
+ }
+ else
+ {
+ switch (shCount)
+ {
+ case 2:
+ emitcode ("rr", "a");
+ //fallthrough
+ case 1:
+ emitcode ("rr", "a");
+ //fallthrough
+ case 0:
+ emitcode ("anl", "a,#0x01");
+ break;
+ case 3:
+ case 5:
+ emitcode ("mov", "c,acc[%d]", shCount);
+ emitcode ("clr", "a");
+ emitcode ("rlc", "a");
+ break;
+ case 4:
+ emitcode ("swap", "a");
+ emitcode ("anl", "a,#0x01");
+ break;
+ case 6:
+ emitcode ("rl", "a");
+ //fallthrough
+ case 7:
+ emitcode ("rl", "a");
+ emitcode ("anl", "a,#0x01");
+ break;
+ }
+ outAcc (result);
+ }
+
+ freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (right, NULL, ic, TRUE);
+ freeAsmop (left, NULL, ic, TRUE);
+}
+
+/*-----------------------------------------------------------------*/
+/* genGetByte - generates code get a single byte */
+/*-----------------------------------------------------------------*/
+static void
+genGetByte (iCode * ic)
+{
+ operand *left, *right, *result;
+ int offset;
+
+ D (emitcode (";", "genGetByte"));
+
+ left = IC_LEFT (ic);
+ right = IC_RIGHT (ic);
+ result = IC_RESULT (ic);
+ aopOp (left, ic, FALSE);
+ aopOp (right, ic, FALSE);
+ aopOp (result, ic, FALSE);
+
+ offset = (int)floatFromVal (AOP (right)->aopu.aop_lit) / 8;
+ aopPut (result,
+ aopGet (left, offset, FALSE, FALSE),
+ 0);
+
+ freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (right, NULL, ic, TRUE);
+ freeAsmop (left, NULL, ic, TRUE);
+}
+
+/*-----------------------------------------------------------------*/
+/* genGetWord - generates code get two bytes */
+/*-----------------------------------------------------------------*/
+static void
+genGetWord (iCode * ic)
+{
+ operand *left, *right, *result;
+ int offset;
+
+ D (emitcode (";", "genGetWord"));
+ left = IC_LEFT (ic);
+ right = IC_RIGHT (ic);
+ result = IC_RESULT (ic);
+ aopOp (left, ic, FALSE);
+ aopOp (right, ic, FALSE);
+ aopOp (result, ic, FALSE);
+
+ offset = (int)floatFromVal (AOP (right)->aopu.aop_lit) / 8;
+ aopPut (result,
+ aopGet (left, offset, FALSE, FALSE),
+ 0);
+ aopPut (result,
+ aopGet (left, offset+1, FALSE, FALSE),
+ 1);
+
+ freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (right, NULL, ic, TRUE);
freeAsmop (left, NULL, ic, TRUE);
+}
+
+/*-----------------------------------------------------------------*/
+/* genSwap - generates code to swap nibbles or bytes */
+/*-----------------------------------------------------------------*/
+static void
+genSwap (iCode * ic)
+{
+ operand *left, *result;
+
+ D(emitcode ("; genSwap",""));
+
+ left = IC_LEFT (ic);
+ result = IC_RESULT (ic);
+ aopOp (left, ic, FALSE);
+ aopOp (result, ic, FALSE);
+
+ switch (AOP_SIZE (left))
+ {
+ case 1: /* swap nibbles in byte */
+ MOVA (aopGet (left, 0, FALSE, FALSE));
+ emitcode ("swap", "a");
+ aopPut (result, "a", 0);
+ break;
+ case 2: /* swap bytes in word */
+ if (AOP_TYPE(left) == AOP_REG && sameRegs(AOP(left), AOP(result)))
+ {
+ MOVA (aopGet (left, 0, FALSE, FALSE));
+ aopPut (result, aopGet (left, 1, FALSE, FALSE), 0);
+ aopPut (result, "a", 1);
+ }
+ else if (operandsEqu (left, result))
+ {
+ char * reg = "a";
+ bool pushedB = FALSE, leftInB = FALSE;
+
+ MOVA (aopGet (left, 0, FALSE, FALSE));
+ if (aopGetUsesAcc(left, 1) || aopGetUsesAcc(result, 0))
+ {
+ pushedB = pushB ();
+ emitcode ("mov", "b,a");
+ reg = "b";
+ leftInB = TRUE;
+ }
+ aopPut (result, aopGet (left, 1, FALSE, FALSE), 0);
+ aopPut (result, reg, 1);
+
+ if (leftInB)
+ popB (pushedB);
+ }
+ else
+ {
+ aopPut (result, aopGet (left, 1, FALSE, FALSE), 0);
+ aopPut (result, aopGet (left, 0, FALSE, FALSE), 1);
+ }
+ break;
+ default:
+ wassertl(FALSE, "unsupported SWAP operand size");
+ }
+
freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (left, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
static void
AccRol (int shCount)
{
- shCount &= 0x0007; // shCount : 0..7
+ shCount &= 0x0007; // shCount : 0..7
switch (shCount)
{
if (shCount != 0)
{
if (shCount == 1)
- emitcode ("add", "a,acc");
+ emitcode ("add", "a,acc");
else if (shCount == 2)
- {
- emitcode ("add", "a,acc");
- emitcode ("add", "a,acc");
- }
+ {
+ emitcode ("add", "a,acc");
+ emitcode ("add", "a,acc");
+ }
else
- {
- /* rotate left accumulator */
- AccRol (shCount);
- /* and kill the lower order bits */
- emitcode ("anl", "a,#0x%02x", SLMask[shCount]);
- }
+ {
+ /* rotate left accumulator */
+ AccRol (shCount);
+ /* and kill the lower order bits */
+ emitcode ("anl", "a,#0x%02x", SLMask[shCount]);
+ }
}
}
if (shCount != 0)
{
if (shCount == 1)
- {
- CLRC;
- emitcode ("rrc", "a");
- }
+ {
+ CLRC;
+ emitcode ("rrc", "a");
+ }
else
- {
- /* rotate right accumulator */
- AccRol (8 - shCount);
- /* and kill the higher order bits */
- emitcode ("anl", "a,#0x%02x", SRMask[shCount]);
- }
+ {
+ /* rotate right accumulator */
+ AccRol (8 - shCount);
+ /* and kill the higher order bits */
+ emitcode ("anl", "a,#0x%02x", SRMask[shCount]);
+ }
}
}
if (shCount != 0)
{
if (shCount == 1)
- {
- emitcode ("mov", "c,acc.7");
- emitcode ("rrc", "a");
- }
+ {
+ emitcode ("mov", "c,acc.7");
+ emitcode ("rrc", "a");
+ }
else if (shCount == 2)
- {
- emitcode ("mov", "c,acc.7");
- emitcode ("rrc", "a");
- emitcode ("mov", "c,acc.7");
- emitcode ("rrc", "a");
- }
+ {
+ emitcode ("mov", "c,acc.7");
+ emitcode ("rrc", "a");
+ emitcode ("mov", "c,acc.7");
+ emitcode ("rrc", "a");
+ }
else
- {
- tlbl = newiTempLabel (NULL);
- /* rotate right accumulator */
- AccRol (8 - shCount);
- /* and kill the higher order bits */
- emitcode ("anl", "a,#0x%02x", SRMask[shCount]);
- emitcode ("jnb", "acc.%d,%05d$", 7 - shCount, tlbl->key + 100);
- emitcode ("orl", "a,#0x%02x",
- (unsigned char) ~SRMask[shCount]);
- emitcode ("", "%05d$:", tlbl->key + 100);
- }
+ {
+ tlbl = newiTempLabel (NULL);
+ /* rotate right accumulator */
+ AccRol (8 - shCount);
+ /* and kill the higher order bits */
+ emitcode ("anl", "a,#0x%02x", SRMask[shCount]);
+ emitcode ("jnb", "acc.%d,%05d$", 7 - shCount, tlbl->key + 100);
+ emitcode ("orl", "a,#0x%02x",
+ (unsigned char) ~SRMask[shCount]);
+ emitLabel (tlbl);
+ }
}
}
/*-----------------------------------------------------------------*/
static void
shiftR1Left2Result (operand * left, int offl,
- operand * result, int offr,
- int shCount, int sign)
+ operand * result, int offr,
+ int shCount, int sign)
{
- MOVA (aopGet (AOP (left), offl, FALSE, FALSE));
+ MOVA (aopGet (left, offl, FALSE, FALSE));
/* shift right accumulator */
if (sign)
AccSRsh (shCount);
else
AccRsh (shCount);
- aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", offr);
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
static void
shiftL1Left2Result (operand * left, int offl,
- operand * result, int offr, int shCount)
+ operand * result, int offr, int shCount)
{
char *l;
- l = aopGet (AOP (left), offl, FALSE, FALSE);
+ l = aopGet (left, offl, FALSE, FALSE);
MOVA (l);
/* shift left accumulator */
AccLsh (shCount);
- aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", offr);
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
static void
movLeft2Result (operand * left, int offl,
- operand * result, int offr, int sign)
+ operand * result, int offr, int sign)
{
char *l;
if (!sameRegs (AOP (left), AOP (result)) || (offl != offr))
{
- l = aopGet (AOP (left), offl, FALSE, FALSE);
+ l = aopGet (left, offl, FALSE, FALSE);
if (*l == '@' && (IS_AOP_PREG (result)))
- {
- emitcode ("mov", "a,%s", l);
- aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE));
- }
+ {
+ emitcode ("mov", "a,%s", l);
+ aopPut (result, "a", offr);
+ }
else
- {
- if (!sign)
- aopPut (AOP (result), l, offr, isOperandVolatile (result, FALSE));
- else
- {
- /* MSB sign in acc.7 ! */
- if (getDataSize (left) == offl + 1)
- {
- emitcode ("mov", "a,%s", l);
- aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE));
- }
- }
- }
+ {
+ if (!sign)
+ {
+ aopPut (result, l, offr);
+ }
+ else
+ {
+ /* MSB sign in acc.7 ! */
+ if (getDataSize (left) == offl + 1)
+ {
+ MOVA (l);
+ aopPut (result, "a", offr);
+ }
+ }
+ }
}
}
break;
case 3:
case 4:
- case 5: // AAAAABBB:CCCCCDDD
+ case 5: // AAAAABBB:CCCCCDDD
- AccRol (shCount); // BBBAAAAA:CCCCCDDD
+ AccRol (shCount); // BBBAAAAA:CCCCCDDD
emitcode ("anl", "a,#0x%02x",
- SLMask[shCount]); // BBB00000:CCCCCDDD
+ SLMask[shCount]); // BBB00000:CCCCCDDD
- emitcode ("xch", "a,%s", x); // CCCCCDDD:BBB00000
+ emitcode ("xch", "a,%s", x); // CCCCCDDD:BBB00000
- AccRol (shCount); // DDDCCCCC:BBB00000
+ AccRol (shCount); // DDDCCCCC:BBB00000
- emitcode ("xch", "a,%s", x); // BBB00000:DDDCCCCC
+ emitcode ("xch", "a,%s", x); // BBB00000:DDDCCCCC
- emitcode ("xrl", "a,%s", x); // (BBB^DDD)CCCCC:DDDCCCCC
+ emitcode ("xrl", "a,%s", x); // (BBB^DDD)CCCCC:DDDCCCCC
- emitcode ("xch", "a,%s", x); // DDDCCCCC:(BBB^DDD)CCCCC
+ emitcode ("xch", "a,%s", x); // DDDCCCCC:(BBB^DDD)CCCCC
emitcode ("anl", "a,#0x%02x",
- SLMask[shCount]); // DDD00000:(BBB^DDD)CCCCC
+ SLMask[shCount]); // DDD00000:(BBB^DDD)CCCCC
- emitcode ("xch", "a,%s", x); // (BBB^DDD)CCCCC:DDD00000
+ emitcode ("xch", "a,%s", x); // (BBB^DDD)CCCCC:DDD00000
- emitcode ("xrl", "a,%s", x); // BBBCCCCC:DDD00000
+ emitcode ("xrl", "a,%s", x); // BBBCCCCC:DDD00000
break;
- case 6: // AAAAAABB:CCCCCCDD
+ case 6: // AAAAAABB:CCCCCCDD
emitcode ("anl", "a,#0x%02x",
- SRMask[shCount]); // 000000BB:CCCCCCDD
- emitcode ("mov", "c,acc.0"); // c = B
- emitcode ("xch", "a,%s", x); // CCCCCCDD:000000BB
+ SRMask[shCount]); // 000000BB:CCCCCCDD
+ emitcode ("mov", "c,acc.0"); // c = B
+ emitcode ("xch", "a,%s", x); // CCCCCCDD:000000BB
#if 0 // REMOVE ME
- AccAXRrl1 (x); // BCCCCCCD:D000000B
- AccAXRrl1 (x); // BBCCCCCC:DD000000
+ AccAXRrl1 (x); // BCCCCCCD:D000000B
+ AccAXRrl1 (x); // BBCCCCCC:DD000000
#else
- emitcode("rrc","a");
- emitcode("xch","a,%s", x);
- emitcode("rrc","a");
- emitcode("mov","c,acc.0"); //<< get correct bit
- emitcode("xch","a,%s", x);
-
- emitcode("rrc","a");
- emitcode("xch","a,%s", x);
- emitcode("rrc","a");
- emitcode("xch","a,%s", x);
+ emitcode("rrc","a");
+ emitcode("xch","a,%s", x);
+ emitcode("rrc","a");
+ emitcode("mov","c,acc.0"); //<< get correct bit
+ emitcode("xch","a,%s", x);
+
+ emitcode("rrc","a");
+ emitcode("xch","a,%s", x);
+ emitcode("rrc","a");
+ emitcode("xch","a,%s", x);
#endif
break;
- case 7: // a:x <<= 7
+ case 7: // a:x <<= 7
emitcode ("anl", "a,#0x%02x",
- SRMask[shCount]); // 0000000B:CCCCCCCD
+ SRMask[shCount]); // 0000000B:CCCCCCCD
- emitcode ("mov", "c,acc.0"); // c = B
+ emitcode ("mov", "c,acc.0"); // c = B
- emitcode ("xch", "a,%s", x); // CCCCCCCD:0000000B
+ emitcode ("xch", "a,%s", x); // CCCCCCCD:0000000B
- AccAXRrl1 (x); // BCCCCCCC:D0000000
+ AccAXRrl1 (x); // BCCCCCCC:D0000000
break;
default:
break;
case 1:
CLRC;
- AccAXRrl1 (x); // 0->a:x
+ AccAXRrl1 (x); // 0->a:x
break;
case 2:
CLRC;
- AccAXRrl1 (x); // 0->a:x
+ AccAXRrl1 (x); // 0->a:x
CLRC;
- AccAXRrl1 (x); // 0->a:x
+ AccAXRrl1 (x); // 0->a:x
break;
case 3:
case 4:
- case 5: // AAAAABBB:CCCCCDDD = a:x
+ case 5: // AAAAABBB:CCCCCDDD = a:x
- AccRol (8 - shCount); // BBBAAAAA:DDDCCCCC
+ AccRol (8 - shCount); // BBBAAAAA:DDDCCCCC
- emitcode ("xch", "a,%s", x); // CCCCCDDD:BBBAAAAA
+ emitcode ("xch", "a,%s", x); // CCCCCDDD:BBBAAAAA
- AccRol (8 - shCount); // DDDCCCCC:BBBAAAAA
+ AccRol (8 - shCount); // DDDCCCCC:BBBAAAAA
emitcode ("anl", "a,#0x%02x",
- SRMask[shCount]); // 000CCCCC:BBBAAAAA
+ SRMask[shCount]); // 000CCCCC:BBBAAAAA
- emitcode ("xrl", "a,%s", x); // BBB(CCCCC^AAAAA):BBBAAAAA
+ emitcode ("xrl", "a,%s", x); // BBB(CCCCC^AAAAA):BBBAAAAA
- emitcode ("xch", "a,%s", x); // BBBAAAAA:BBB(CCCCC^AAAAA)
+ emitcode ("xch", "a,%s", x); // BBBAAAAA:BBB(CCCCC^AAAAA)
emitcode ("anl", "a,#0x%02x",
- SRMask[shCount]); // 000AAAAA:BBB(CCCCC^AAAAA)
+ SRMask[shCount]); // 000AAAAA:BBB(CCCCC^AAAAA)
- emitcode ("xch", "a,%s", x); // BBB(CCCCC^AAAAA):000AAAAA
+ emitcode ("xch", "a,%s", x); // BBB(CCCCC^AAAAA):000AAAAA
- emitcode ("xrl", "a,%s", x); // BBBCCCCC:000AAAAA
+ emitcode ("xrl", "a,%s", x); // BBBCCCCC:000AAAAA
- emitcode ("xch", "a,%s", x); // 000AAAAA:BBBCCCCC
+ emitcode ("xch", "a,%s", x); // 000AAAAA:BBBCCCCC
break;
- case 6: // AABBBBBB:CCDDDDDD
+ case 6: // AABBBBBB:CCDDDDDD
emitcode ("mov", "c,acc.7");
- AccAXLrl1 (x); // ABBBBBBC:CDDDDDDA
+ AccAXLrl1 (x); // ABBBBBBC:CDDDDDDA
emitcode ("mov", "c,acc.7");
- AccAXLrl1 (x); // BBBBBBCC:DDDDDDAA
+ AccAXLrl1 (x); // BBBBBBCC:DDDDDDAA
- emitcode ("xch", "a,%s", x); // DDDDDDAA:BBBBBBCC
+ emitcode ("xch", "a,%s", x); // DDDDDDAA:BBBBBBCC
emitcode ("anl", "a,#0x%02x",
- SRMask[shCount]); // 000000AA:BBBBBBCC
+ SRMask[shCount]); // 000000AA:BBBBBBCC
break;
- case 7: // ABBBBBBB:CDDDDDDD
+ case 7: // ABBBBBBB:CDDDDDDD
- emitcode ("mov", "c,acc.7"); // c = A
+ emitcode ("mov", "c,acc.7"); // c = A
- AccAXLrl1 (x); // BBBBBBBC:DDDDDDDA
+ AccAXLrl1 (x); // BBBBBBBC:DDDDDDDA
- emitcode ("xch", "a,%s", x); // DDDDDDDA:BBBBBBCC
+ emitcode ("xch", "a,%s", x); // DDDDDDDA:BBBBBBCC
emitcode ("anl", "a,#0x%02x",
- SRMask[shCount]); // 0000000A:BBBBBBBC
+ SRMask[shCount]); // 0000000A:BBBBBBBC
break;
default:
break;
case 1:
emitcode ("mov", "c,acc.7");
- AccAXRrl1 (x); // s->a:x
+ AccAXRrl1 (x); // s->a:x
break;
case 2:
emitcode ("mov", "c,acc.7");
- AccAXRrl1 (x); // s->a:x
+ AccAXRrl1 (x); // s->a:x
emitcode ("mov", "c,acc.7");
- AccAXRrl1 (x); // s->a:x
+ AccAXRrl1 (x); // s->a:x
break;
case 3:
case 4:
- case 5: // AAAAABBB:CCCCCDDD = a:x
+ case 5: // AAAAABBB:CCCCCDDD = a:x
tlbl = newiTempLabel (NULL);
- AccRol (8 - shCount); // BBBAAAAA:CCCCCDDD
+ AccRol (8 - shCount); // BBBAAAAA:CCCCCDDD
- emitcode ("xch", "a,%s", x); // CCCCCDDD:BBBAAAAA
+ emitcode ("xch", "a,%s", x); // CCCCCDDD:BBBAAAAA
- AccRol (8 - shCount); // DDDCCCCC:BBBAAAAA
+ AccRol (8 - shCount); // DDDCCCCC:BBBAAAAA
emitcode ("anl", "a,#0x%02x",
- SRMask[shCount]); // 000CCCCC:BBBAAAAA
+ SRMask[shCount]); // 000CCCCC:BBBAAAAA
- emitcode ("xrl", "a,%s", x); // BBB(CCCCC^AAAAA):BBBAAAAA
+ emitcode ("xrl", "a,%s", x); // BBB(CCCCC^AAAAA):BBBAAAAA
- emitcode ("xch", "a,%s", x); // BBBAAAAA:BBB(CCCCC^AAAAA)
+ emitcode ("xch", "a,%s", x); // BBBAAAAA:BBB(CCCCC^AAAAA)
emitcode ("anl", "a,#0x%02x",
- SRMask[shCount]); // 000AAAAA:BBB(CCCCC^AAAAA)
+ SRMask[shCount]); // 000AAAAA:BBB(CCCCC^AAAAA)
- emitcode ("xch", "a,%s", x); // BBB(CCCCC^AAAAA):000AAAAA
+ emitcode ("xch", "a,%s", x); // BBB(CCCCC^AAAAA):000AAAAA
- emitcode ("xrl", "a,%s", x); // BBBCCCCC:000AAAAA
+ emitcode ("xrl", "a,%s", x); // BBBCCCCC:000AAAAA
- emitcode ("xch", "a,%s", x); // 000SAAAA:BBBCCCCC
+ emitcode ("xch", "a,%s", x); // 000SAAAA:BBBCCCCC
emitcode ("jnb", "acc.%d,%05d$", 7 - shCount, tlbl->key + 100);
emitcode ("orl", "a,#0x%02x",
- (unsigned char) ~SRMask[shCount]); // 111AAAAA:BBBCCCCC
+ (unsigned char) ~SRMask[shCount]); // 111AAAAA:BBBCCCCC
- emitcode ("", "%05d$:", tlbl->key + 100);
- break; // SSSSAAAA:BBBCCCCC
+ emitLabel (tlbl);
+ break; // SSSSAAAA:BBBCCCCC
- case 6: // AABBBBBB:CCDDDDDD
+ case 6: // AABBBBBB:CCDDDDDD
tlbl = newiTempLabel (NULL);
emitcode ("mov", "c,acc.7");
- AccAXLrl1 (x); // ABBBBBBC:CDDDDDDA
+ AccAXLrl1 (x); // ABBBBBBC:CDDDDDDA
emitcode ("mov", "c,acc.7");
- AccAXLrl1 (x); // BBBBBBCC:DDDDDDAA
+ AccAXLrl1 (x); // BBBBBBCC:DDDDDDAA
- emitcode ("xch", "a,%s", x); // DDDDDDAA:BBBBBBCC
+ emitcode ("xch", "a,%s", x); // DDDDDDAA:BBBBBBCC
emitcode ("anl", "a,#0x%02x",
- SRMask[shCount]); // 000000AA:BBBBBBCC
+ SRMask[shCount]); // 000000AA:BBBBBBCC
emitcode ("jnb", "acc.%d,%05d$", 7 - shCount, tlbl->key + 100);
emitcode ("orl", "a,#0x%02x",
- (unsigned char) ~SRMask[shCount]); // 111111AA:BBBBBBCC
+ (unsigned char) ~SRMask[shCount]); // 111111AA:BBBBBBCC
- emitcode ("", "%05d$:", tlbl->key + 100);
+ emitLabel (tlbl);
break;
- case 7: // ABBBBBBB:CDDDDDDD
+ case 7: // ABBBBBBB:CDDDDDDD
tlbl = newiTempLabel (NULL);
- emitcode ("mov", "c,acc.7"); // c = A
+ emitcode ("mov", "c,acc.7"); // c = A
- AccAXLrl1 (x); // BBBBBBBC:DDDDDDDA
+ AccAXLrl1 (x); // BBBBBBBC:DDDDDDDA
- emitcode ("xch", "a,%s", x); // DDDDDDDA:BBBBBBCC
+ emitcode ("xch", "a,%s", x); // DDDDDDDA:BBBBBBCC
emitcode ("anl", "a,#0x%02x",
- SRMask[shCount]); // 0000000A:BBBBBBBC
+ SRMask[shCount]); // 0000000A:BBBBBBBC
emitcode ("jnb", "acc.%d,%05d$", 7 - shCount, tlbl->key + 100);
emitcode ("orl", "a,#0x%02x",
- (unsigned char) ~SRMask[shCount]); // 1111111A:BBBBBBBC
+ (unsigned char) ~SRMask[shCount]); // 1111111A:BBBBBBBC
- emitcode ("", "%05d$:", tlbl->key + 100);
+ emitLabel (tlbl);
break;
default:
break;
/*-----------------------------------------------------------------*/
static void
shiftL2Left2Result (operand * left, int offl,
- operand * result, int offr, int shCount)
+ operand * result, int offr, int shCount)
{
+ char * x;
+ bool pushedB = FALSE;
+ bool usedB = FALSE;
+
if (sameRegs (AOP (result), AOP (left)) &&
((offl + MSB16) == offr))
{
/* don't crash result[offr] */
- MOVA (aopGet (AOP (left), offl, FALSE, FALSE));
- emitcode ("xch", "a,%s", aopGet (AOP (left), offl + MSB16, FALSE, FALSE));
+ MOVA (aopGet (left, offl, FALSE, FALSE));
+ x = xch_a_aopGet (left, offl + MSB16, FALSE, FALSE);
+ usedB = !strncmp(x, "b", 1);
+ }
+ else if (aopGetUsesAcc (result, offr))
+ {
+ movLeft2Result (left, offl, result, offr, 0);
+ pushedB = pushB ();
+ usedB = TRUE;
+ emitcode ("mov", "b,%s", aopGet (left, offl + MSB16, FALSE, FALSE));
+ MOVA (aopGet (result, offr, FALSE, FALSE));
+ emitcode ("xch", "a,b");
+ x = "b";
}
else
{
movLeft2Result (left, offl, result, offr, 0);
- MOVA (aopGet (AOP (left), offl + MSB16, FALSE, FALSE));
+ MOVA (aopGet (left, offl + MSB16, FALSE, FALSE));
+ x = aopGet (result, offr, FALSE, FALSE);
}
/* ax << shCount (x = lsb(result)) */
- AccAXLsh (aopGet (AOP (result), offr, FALSE, FALSE), shCount);
- aopPut (AOP (result), "a", offr + MSB16, isOperandVolatile (result, FALSE));
+ AccAXLsh (x, shCount);
+ if (usedB)
+ {
+ emitcode ("xch", "a,b");
+ aopPut (result, "a", offr);
+ aopPut (result, "b", offr + MSB16);
+ popB (pushedB);
+ }
+ else
+ {
+ aopPut (result, "a", offr + MSB16);
+ }
}
/*-----------------------------------------------------------------*/
static void
shiftR2Left2Result (operand * left, int offl,
- operand * result, int offr,
- int shCount, int sign)
+ operand * result, int offr,
+ int shCount, int sign)
{
+ char * x;
+ bool pushedB = FALSE;
+ bool usedB = FALSE;
+
if (sameRegs (AOP (result), AOP (left)) &&
((offl + MSB16) == offr))
{
/* don't crash result[offr] */
- MOVA (aopGet (AOP (left), offl, FALSE, FALSE));
- emitcode ("xch", "a,%s", aopGet (AOP (left), offl + MSB16, FALSE, FALSE));
+ MOVA (aopGet (left, offl, FALSE, FALSE));
+ x = xch_a_aopGet (left, offl + MSB16, FALSE, FALSE);
+ usedB = !strncmp(x, "b", 1);
+ }
+ else if (aopGetUsesAcc (result, offr))
+ {
+ movLeft2Result (left, offl, result, offr, 0);
+ pushedB = pushB ();
+ usedB = TRUE;
+ emitcode ("mov", "b,%s", aopGet (result, offr, FALSE, FALSE));
+ MOVA (aopGet (left, offl + MSB16, FALSE, FALSE));
+ x = "b";
}
else
{
movLeft2Result (left, offl, result, offr, 0);
- MOVA (aopGet (AOP (left), offl + MSB16, FALSE, FALSE));
+ MOVA (aopGet (left, offl + MSB16, FALSE, FALSE));
+ x = aopGet (result, offr, FALSE, FALSE);
}
/* a:x >> shCount (x = lsb(result)) */
if (sign)
- AccAXRshS (aopGet (AOP (result), offr, FALSE, FALSE), shCount);
+ AccAXRshS (x, shCount);
else
- AccAXRsh (aopGet (AOP (result), offr, FALSE, FALSE), shCount);
+ AccAXRsh (x, shCount);
+ if (usedB)
+ {
+ emitcode ("xch", "a,b");
+ aopPut (result, "a", offr);
+ emitcode ("xch", "a,b");
+ popB (pushedB);
+ }
if (getDataSize (result) > 1)
- aopPut (AOP (result), "a", offr + MSB16, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", offr + MSB16);
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
static void
shiftLLeftOrResult (operand * left, int offl,
- operand * result, int offr, int shCount)
+ operand * result, int offr, int shCount)
{
- MOVA (aopGet (AOP (left), offl, FALSE, FALSE));
+ MOVA (aopGet (left, offl, FALSE, FALSE));
/* shift left accumulator */
AccLsh (shCount);
/* or with result */
- emitcode ("orl", "a,%s", aopGet (AOP (result), offr, FALSE, FALSE));
+ if (aopGetUsesAcc (result, offr))
+ {
+ emitcode ("xch", "a,b");
+ MOVA (aopGet (result, offr, FALSE, FALSE));
+ emitcode ("orl", "a,b");
+ }
+ else
+ {
+ emitcode ("orl", "a,%s", aopGet (result, offr, FALSE, FALSE));
+ }
/* back to result */
- aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", offr);
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
static void
shiftRLeftOrResult (operand * left, int offl,
- operand * result, int offr, int shCount)
+ operand * result, int offr, int shCount)
{
- MOVA (aopGet (AOP (left), offl, FALSE, FALSE));
+ MOVA (aopGet (left, offl, FALSE, FALSE));
/* shift right accumulator */
AccRsh (shCount);
/* or with result */
- emitcode ("orl", "a,%s", aopGet (AOP (result), offr, FALSE, FALSE));
+ if (aopGetUsesAcc(result, offr))
+ {
+ emitcode ("xch", "a,b");
+ MOVA (aopGet (result, offr, FALSE, FALSE));
+ emitcode ("orl", "a,b");
+ }
+ else
+ {
+ emitcode ("orl", "a,%s", aopGet (result, offr, FALSE, FALSE));
+ }
/* back to result */
- aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", offr);
}
/*-----------------------------------------------------------------*/
static void
genlshOne (operand * result, operand * left, int shCount)
{
- D(emitcode ("; genlshOne",""));
+ D (emitcode (";", "genlshOne"));
shiftL1Left2Result (left, LSB, result, LSB, shCount);
}
{
int size;
- D(emitcode ("; genlshTwo",""));
+ D (emitcode (";", "genlshTwo"));
size = getDataSize (result);
shCount -= 8;
if (size > 1)
- {
- if (shCount)
- shiftL1Left2Result (left, LSB, result, MSB16, shCount);
- else
- movLeft2Result (left, LSB, result, MSB16, 0);
- }
- aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE));
+ {
+ if (shCount)
+ shiftL1Left2Result (left, LSB, result, MSB16, shCount);
+ else
+ movLeft2Result (left, LSB, result, MSB16, 0);
+ }
+ aopPut (result, zero, LSB);
}
/* 1 <= shCount <= 7 */
else
{
if (size == 1)
- shiftL1Left2Result (left, LSB, result, LSB, shCount);
+ shiftL1Left2Result (left, LSB, result, LSB, shCount);
else
- shiftL2Left2Result (left, LSB, result, LSB, shCount);
+ shiftL2Left2Result (left, LSB, result, LSB, shCount);
}
}
if (size >= LSB + offr)
{
- l = aopGet (AOP (left), LSB, FALSE, FALSE);
+ l = aopGet (left, LSB, FALSE, FALSE);
MOVA (l);
emitcode ("add", "a,acc");
if (sameRegs (AOP (left), AOP (result)) &&
- size >= MSB16 + offr && offr != LSB)
- emitcode ("xch", "a,%s",
- aopGet (AOP (left), LSB + offr, FALSE, FALSE));
+ size >= MSB16 + offr && offr != LSB)
+ xch_a_aopGet (left, LSB + offr, FALSE, FALSE);
else
- aopPut (AOP (result), "a", LSB + offr, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", LSB + offr);
}
if (size >= MSB16 + offr)
{
if (!(sameRegs (AOP (result), AOP (left)) && size >= MSB16 + offr && offr != LSB))
- {
- l = aopGet (AOP (left), MSB16, FALSE, FALSE);
- MOVA (l);
- }
+ {
+ l = aopGet (left, MSB16, FALSE, FALSE);
+ MOVA (l);
+ }
emitcode ("rlc", "a");
if (sameRegs (AOP (left), AOP (result)) &&
- size >= MSB24 + offr && offr != LSB)
- emitcode ("xch", "a,%s",
- aopGet (AOP (left), MSB16 + offr, FALSE, FALSE));
+ size >= MSB24 + offr && offr != LSB)
+ xch_a_aopGet (left, MSB16 + offr, FALSE, FALSE);
else
- aopPut (AOP (result), "a", MSB16 + offr, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", MSB16 + offr);
}
if (size >= MSB24 + offr)
{
- if (!(sameRegs (AOP (left), AOP (left)) && size >= MSB24 + offr && offr != LSB))
- {
- l = aopGet (AOP (left), MSB24, FALSE, FALSE);
- MOVA (l);
- }
+ if (!(sameRegs (AOP (result), AOP (left)) && size >= MSB24 + offr && offr != LSB))
+ {
+ l = aopGet (left, MSB24, FALSE, FALSE);
+ MOVA (l);
+ }
emitcode ("rlc", "a");
if (sameRegs (AOP (left), AOP (result)) &&
- size >= MSB32 + offr && offr != LSB)
- emitcode ("xch", "a,%s",
- aopGet (AOP (left), MSB24 + offr, FALSE, FALSE));
+ size >= MSB32 + offr && offr != LSB)
+ xch_a_aopGet (left, MSB24 + offr, FALSE, FALSE);
else
- aopPut (AOP (result), "a", MSB24 + offr, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", MSB24 + offr);
}
if (size > MSB32 + offr)
{
if (!(sameRegs (AOP (result), AOP (left)) && size >= MSB32 + offr && offr != LSB))
- {
- l = aopGet (AOP (left), MSB32, FALSE, FALSE);
- MOVA (l);
- }
+ {
+ l = aopGet (left, MSB32, FALSE, FALSE);
+ MOVA (l);
+ }
emitcode ("rlc", "a");
- aopPut (AOP (result), "a", MSB32 + offr, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", MSB32 + offr);
}
if (offr != LSB)
- aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE));
+ aopPut (result, zero, LSB);
}
/*-----------------------------------------------------------------*/
{
int size;
- D(emitcode ("; genlshFour",""));
+ D (emitcode (";", "genlshFour"));
size = AOP_SIZE (result);
{
shCount -= 24;
if (shCount)
- /* lowest order of left goes to the highest
- order of the destination */
- shiftL1Left2Result (left, LSB, result, MSB32, shCount);
+ /* lowest order of left goes to the highest
+ order of the destination */
+ shiftL1Left2Result (left, LSB, result, MSB32, shCount);
else
- movLeft2Result (left, LSB, result, MSB32, 0);
- aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE));
- aopPut (AOP (result), zero, MSB16, isOperandVolatile (result, FALSE));
- aopPut (AOP (result), zero, MSB24, isOperandVolatile (result, FALSE));
+ movLeft2Result (left, LSB, result, MSB32, 0);
+ aopPut (result, zero, LSB);
+ aopPut (result, zero, MSB16);
+ aopPut (result, zero, MSB24);
return;
}
shCount -= 16;
/* if some more remaining */
if (shCount)
- shiftL2Left2Result (left, LSB, result, MSB24, shCount);
+ shiftL2Left2Result (left, LSB, result, MSB24, shCount);
else
- {
- movLeft2Result (left, MSB16, result, MSB32, 0);
- movLeft2Result (left, LSB, result, MSB24, 0);
- }
- aopPut (AOP (result), zero, MSB16, isOperandVolatile (result, FALSE));
- aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE));
+ {
+ movLeft2Result (left, MSB16, result, MSB32, 0);
+ movLeft2Result (left, LSB, result, MSB24, 0);
+ }
+ aopPut (result, zero, MSB16);
+ aopPut (result, zero, LSB);
return;
}
/* lower order three bytes goes to higher order three bytes */
shCount -= 8;
if (size == 2)
- {
- if (shCount)
- shiftL1Left2Result (left, LSB, result, MSB16, shCount);
- else
- movLeft2Result (left, LSB, result, MSB16, 0);
- }
+ {
+ if (shCount)
+ shiftL1Left2Result (left, LSB, result, MSB16, shCount);
+ else
+ movLeft2Result (left, LSB, result, MSB16, 0);
+ }
else
- { /* size = 4 */
- if (shCount == 0)
- {
- movLeft2Result (left, MSB24, result, MSB32, 0);
- movLeft2Result (left, MSB16, result, MSB24, 0);
- movLeft2Result (left, LSB, result, MSB16, 0);
- aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE));
- }
- else if (shCount == 1)
- shiftLLong (left, result, MSB16);
- else
- {
- shiftL2Left2Result (left, MSB16, result, MSB24, shCount);
- shiftL1Left2Result (left, LSB, result, MSB16, shCount);
- shiftRLeftOrResult (left, LSB, result, MSB24, 8 - shCount);
- aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE));
- }
- }
+ { /* size = 4 */
+ if (shCount == 0)
+ {
+ movLeft2Result (left, MSB24, result, MSB32, 0);
+ movLeft2Result (left, MSB16, result, MSB24, 0);
+ movLeft2Result (left, LSB, result, MSB16, 0);
+ aopPut (result, zero, LSB);
+ }
+ else if (shCount == 1)
+ shiftLLong (left, result, MSB16);
+ else
+ {
+ shiftL2Left2Result (left, MSB16, result, MSB24, shCount);
+ shiftL1Left2Result (left, LSB, result, MSB16, shCount);
+ shiftRLeftOrResult (left, LSB, result, MSB24, 8 - shCount);
+ aopPut (result, zero, LSB);
+ }
+ }
}
/* 1 <= shCount <= 7 */
{
shiftLLong (left, result, LSB);
if (shCount == 2)
- shiftLLong (result, result, LSB);
+ shiftLLong (result, result, LSB);
}
/* 3 <= shCount <= 7, optimize */
else
/*-----------------------------------------------------------------*/
static void
genLeftShiftLiteral (operand * left,
- operand * right,
- operand * result,
- iCode * ic)
+ operand * right,
+ operand * result,
+ iCode * ic)
{
int shCount = (int) floatFromVal (AOP (right)->aopu.aop_lit);
int size;
- D(emitcode ("; genLeftShiftLiteral",""));
+ D (emitcode (";", "genLeftShiftLiteral"));
freeAsmop (right, NULL, ic, TRUE);
#if VIEW_SIZE
emitcode ("; shift left ", "result %d, left %d", size,
- AOP_SIZE (left));
+ AOP_SIZE (left));
#endif
/* I suppose that the left size >= result size */
if (shCount == 0)
{
while (size--)
- {
- movLeft2Result (left, size, result, size, 0);
- }
+ {
+ movLeft2Result (left, size, result, size, 0);
+ }
}
-
else if (shCount >= (size * 8))
- while (size--)
- aopPut (AOP (result), zero, size, isOperandVolatile (result, FALSE));
+ {
+ while (size--)
+ {
+ aopPut (result, zero, size);
+ }
+ }
else
{
switch (size)
- {
- case 1:
- genlshOne (result, left, shCount);
- break;
-
- case 2:
- genlshTwo (result, left, shCount);
- break;
-
- case 4:
- genlshFour (result, left, shCount);
- break;
- default:
- werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "*** ack! mystery literal shift!\n");
- break;
- }
+ {
+ case 1:
+ genlshOne (result, left, shCount);
+ break;
+
+ case 2:
+ genlshTwo (result, left, shCount);
+ break;
+
+ case 4:
+ genlshFour (result, left, shCount);
+ break;
+ default:
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "*** ack! mystery literal shift!\n");
+ break;
+ }
}
- freeAsmop (left, NULL, ic, TRUE);
freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (left, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
int size, offset;
char *l;
symbol *tlbl, *tlbl1;
+ bool pushedB;
- D(emitcode ("; genLeftShift",""));
+ D (emitcode (";", "genLeftShift"));
right = IC_RIGHT (ic);
left = IC_LEFT (ic);
more that 32 bits make no sense anyway, ( the
largest size of an object can be only 32 bits ) */
- emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE));
+ pushedB = pushB ();
+ MOVB (aopGet (right, 0, FALSE, FALSE));
emitcode ("inc", "b");
freeAsmop (right, NULL, ic, TRUE);
aopOp (left, ic, FALSE);
aopOp (result, ic, FALSE);
-
- /* now move the left to the result if they are not the
- same */
+
+ /* now move the left to the result if they are not the same */
if (!sameRegs (AOP (left), AOP (result)) &&
AOP_SIZE (result) > 1)
{
size = AOP_SIZE (result);
offset = 0;
while (size--)
- {
- l = aopGet (AOP (left), offset, FALSE, TRUE);
- if (*l == '@' && (IS_AOP_PREG (result)))
- {
+ {
+ l = aopGet (left, offset, FALSE, TRUE);
+ if (*l == '@' && (IS_AOP_PREG (result)))
+ {
- emitcode ("mov", "a,%s", l);
- aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
- }
- else
- aopPut (AOP (result), l, offset, isOperandVolatile (result, FALSE));
- offset++;
- }
+ emitcode ("mov", "a,%s", l);
+ aopPut (result, "a", offset);
+ }
+ else
+ aopPut (result, l, offset);
+ offset++;
+ }
}
tlbl = newiTempLabel (NULL);
{
symbol *tlbl1 = newiTempLabel (NULL);
- l = aopGet (AOP (left), 0, FALSE, FALSE);
+ l = aopGet (left, 0, FALSE, FALSE);
MOVA (l);
emitcode ("sjmp", "%05d$", tlbl1->key + 100);
- emitcode ("", "%05d$:", tlbl->key + 100);
+ emitLabel (tlbl);
emitcode ("add", "a,acc");
- emitcode ("", "%05d$:", tlbl1->key + 100);
+ emitLabel (tlbl1);
emitcode ("djnz", "b,%05d$", tlbl->key + 100);
- aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
+ popB (pushedB);
+ aopPut (result, "a", 0);
goto release;
}
reAdjustPreg (AOP (result));
emitcode ("sjmp", "%05d$", tlbl1->key + 100);
- emitcode ("", "%05d$:", tlbl->key + 100);
- l = aopGet (AOP (result), offset, FALSE, FALSE);
+ emitLabel (tlbl);
+ l = aopGet (result, offset, FALSE, FALSE);
MOVA (l);
emitcode ("add", "a,acc");
- aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", offset++);
while (--size)
{
- l = aopGet (AOP (result), offset, FALSE, FALSE);
+ l = aopGet (result, offset, FALSE, FALSE);
MOVA (l);
emitcode ("rlc", "a");
- aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", offset++);
}
reAdjustPreg (AOP (result));
- emitcode ("", "%05d$:", tlbl1->key + 100);
+ emitLabel (tlbl1);
emitcode ("djnz", "b,%05d$", tlbl->key + 100);
+ popB (pushedB);
release:
- freeAsmop (left, NULL, ic, TRUE);
freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (left, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
static void
genrshOne (operand * result, operand * left,
- int shCount, int sign)
+ int shCount, int sign)
{
- D(emitcode ("; genrshOne",""));
+ D (emitcode (";", "genrshOne"));
shiftR1Left2Result (left, LSB, result, LSB, shCount, sign);
}
/*-----------------------------------------------------------------*/
static void
genrshTwo (operand * result, operand * left,
- int shCount, int sign)
+ int shCount, int sign)
{
- D(emitcode ("; genrshTwo",""));
+ D (emitcode (";", "genrshTwo"));
/* if shCount >= 8 */
if (shCount >= 8)
{
shCount -= 8;
if (shCount)
- shiftR1Left2Result (left, MSB16, result, LSB,
- shCount, sign);
+ shiftR1Left2Result (left, MSB16, result, LSB, shCount, sign);
else
- movLeft2Result (left, MSB16, result, LSB, sign);
+ movLeft2Result (left, MSB16, result, LSB, sign);
addSign (result, MSB16, sign);
}
/*-----------------------------------------------------------------*/
static void
shiftRLong (operand * left, int offl,
- operand * result, int sign)
+ operand * result, int sign)
{
- int isSameRegs=sameRegs(AOP(left),AOP(result));
+ bool overlapping = regsInCommon (left, result) || operandsEqu(left, result);
- if (isSameRegs && offl>1) {
- // we are in big trouble, but this shouldn't happen
- werror(E_INTERNAL_ERROR, __FILE__, __LINE__);
- }
+ if (overlapping && offl>1)
+ {
+ // we are in big trouble, but this shouldn't happen
+ werror(E_INTERNAL_ERROR, __FILE__, __LINE__);
+ }
- MOVA (aopGet (AOP (left), MSB32, FALSE, FALSE));
-
- if (offl==MSB16) {
- // shift is > 8
- if (sign) {
- emitcode ("rlc", "a");
- emitcode ("subb", "a,acc");
- if (isSameRegs)
- emitcode ("xch", "a,%s", aopGet(AOP(left), MSB32, FALSE, FALSE));
- else {
- aopPut (AOP (result), "a", MSB32, isOperandVolatile (result, FALSE));
- MOVA (aopGet (AOP (left), MSB32, FALSE, FALSE));
- }
- } else {
- aopPut (AOP(result), zero, MSB32, isOperandVolatile (result, FALSE));
+ MOVA (aopGet (left, MSB32, FALSE, FALSE));
+
+ if (offl==MSB16)
+ {
+ // shift is > 8
+ if (sign)
+ {
+ emitcode ("rlc", "a");
+ emitcode ("subb", "a,acc");
+ if (overlapping && sameByte (AOP (left), MSB32, AOP (result), MSB32))
+ {
+ xch_a_aopGet (left, MSB32, FALSE, FALSE);
+ }
+ else
+ {
+ aopPut (result, "a", MSB32);
+ MOVA (aopGet (left, MSB32, FALSE, FALSE));
+ }
+ }
+ else
+ {
+ if (aopPutUsesAcc (result, zero, MSB32))
+ {
+ emitcode("xch", "a,b");
+ aopPut (result, zero, MSB32);
+ emitcode("xch", "a,b");
+ }
+ else
+ {
+ aopPut (result, zero, MSB32);
+ }
+ }
}
- }
- if (!sign) {
- emitcode ("clr", "c");
- } else {
- emitcode ("mov", "c,acc.7");
- }
+ if (!sign)
+ {
+ emitcode ("clr", "c");
+ }
+ else
+ {
+ emitcode ("mov", "c,acc.7");
+ }
emitcode ("rrc", "a");
- if (isSameRegs && offl==MSB16) {
- emitcode ("xch", "a,%s",aopGet (AOP (left), MSB24, FALSE, FALSE));
- } else {
- aopPut (AOP (result), "a", MSB32-offl, isOperandVolatile (result, FALSE));
- MOVA (aopGet (AOP (left), MSB24, FALSE, FALSE));
- }
+ if (overlapping && offl==MSB16 &&
+ sameByte (AOP (left), MSB24, AOP (result), MSB32-offl))
+ {
+ xch_a_aopGet (left, MSB24, FALSE, FALSE);
+ }
+ else
+ {
+ aopPut (result, "a", MSB32 - offl);
+ MOVA (aopGet (left, MSB24, FALSE, FALSE));
+ }
emitcode ("rrc", "a");
- if (isSameRegs && offl==1) {
- emitcode ("xch", "a,%s",aopGet (AOP (left), MSB16, FALSE, FALSE));
- } else {
- aopPut (AOP (result), "a", MSB24-offl, isOperandVolatile (result, FALSE));
- MOVA (aopGet (AOP (left), MSB16, FALSE, FALSE));
- }
- emitcode ("rrc", "a");
- aopPut (AOP (result), "a", MSB16 - offl, isOperandVolatile (result, FALSE));
+ if (overlapping && offl==MSB16 &&
+ sameByte (AOP (left), MSB16, AOP (result), MSB24-offl))
+ {
+ xch_a_aopGet (left, MSB16, FALSE, FALSE);
+ }
+ else
+ {
+ aopPut (result, "a", MSB24 - offl);
+ MOVA (aopGet (left, MSB16, FALSE, FALSE));
+ }
- if (offl == LSB)
+ emitcode ("rrc", "a");
+ if (offl != LSB)
+ {
+ aopPut (result, "a", MSB16 - offl);
+ }
+ else
{
- MOVA (aopGet (AOP (left), LSB, FALSE, FALSE));
+ if (overlapping &&
+ sameByte (AOP (left), LSB, AOP (result), MSB16-offl))
+ {
+ xch_a_aopGet (left, LSB, FALSE, FALSE);
+ }
+ else
+ {
+ aopPut (result, "a", MSB16 - offl);
+ MOVA (aopGet (left, LSB, FALSE, FALSE));
+ }
emitcode ("rrc", "a");
- aopPut (AOP (result), "a", LSB, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", LSB);
}
}
/*-----------------------------------------------------------------*/
static void
genrshFour (operand * result, operand * left,
- int shCount, int sign)
+ int shCount, int sign)
{
- D(emitcode ("; genrshFour",""));
+ D (emitcode (";", "genrshFour"));
/* if shifting more that 3 bytes */
if (shCount >= 24)
{
shCount -= 24;
if (shCount)
- shiftR1Left2Result (left, MSB32, result, LSB, shCount, sign);
+ shiftR1Left2Result (left, MSB32, result, LSB, shCount, sign);
else
- movLeft2Result (left, MSB32, result, LSB, sign);
+ movLeft2Result (left, MSB32, result, LSB, sign);
addSign (result, MSB16, sign);
}
else if (shCount >= 16)
{
shCount -= 16;
if (shCount)
- shiftR2Left2Result (left, MSB24, result, LSB, shCount, sign);
+ shiftR2Left2Result (left, MSB24, result, LSB, shCount, sign);
else
- {
- movLeft2Result (left, MSB24, result, LSB, 0);
- movLeft2Result (left, MSB32, result, MSB16, sign);
- }
+ {
+ movLeft2Result (left, MSB24, result, LSB, 0);
+ movLeft2Result (left, MSB32, result, MSB16, sign);
+ }
addSign (result, MSB24, sign);
}
else if (shCount >= 8)
{
shCount -= 8;
if (shCount == 1)
- shiftRLong (left, MSB16, result, sign);
+ {
+ shiftRLong (left, MSB16, result, sign);
+ }
else if (shCount == 0)
- {
- movLeft2Result (left, MSB16, result, LSB, 0);
- movLeft2Result (left, MSB24, result, MSB16, 0);
- movLeft2Result (left, MSB32, result, MSB24, sign);
- addSign (result, MSB32, sign);
- }
+ {
+ movLeft2Result (left, MSB16, result, LSB, 0);
+ movLeft2Result (left, MSB24, result, MSB16, 0);
+ movLeft2Result (left, MSB32, result, MSB24, sign);
+ addSign (result, MSB32, sign);
+ }
else
- {
- shiftR2Left2Result (left, MSB16, result, LSB, shCount, 0);
- shiftLLeftOrResult (left, MSB32, result, MSB16, 8 - shCount);
- /* the last shift is signed */
- shiftR1Left2Result (left, MSB32, result, MSB24, shCount, sign);
- addSign (result, MSB32, sign);
- }
+ {
+ shiftR2Left2Result (left, MSB16, result, LSB, shCount, 0);
+ shiftLLeftOrResult (left, MSB32, result, MSB16, 8 - shCount);
+ /* the last shift is signed */
+ shiftR1Left2Result (left, MSB32, result, MSB24, shCount, sign);
+ addSign (result, MSB32, sign);
+ }
}
else
- { /* 1 <= shCount <= 7 */
+ {
+ /* 1 <= shCount <= 7 */
if (shCount <= 2)
- {
- shiftRLong (left, LSB, result, sign);
- if (shCount == 2)
- shiftRLong (result, LSB, result, sign);
- }
+ {
+ shiftRLong (left, LSB, result, sign);
+ if (shCount == 2)
+ shiftRLong (result, LSB, result, sign);
+ }
else
- {
- shiftR2Left2Result (left, LSB, result, LSB, shCount, 0);
- shiftLLeftOrResult (left, MSB24, result, MSB16, 8 - shCount);
- shiftR2Left2Result (left, MSB24, result, MSB24, shCount, sign);
- }
+ {
+ shiftR2Left2Result (left, LSB, result, LSB, shCount, 0);
+ shiftLLeftOrResult (left, MSB24, result, MSB16, 8 - shCount);
+ shiftR2Left2Result (left, MSB24, result, MSB24, shCount, sign);
+ }
}
}
/*-----------------------------------------------------------------*/
static void
genRightShiftLiteral (operand * left,
- operand * right,
- operand * result,
- iCode * ic,
- int sign)
+ operand * right,
+ operand * result,
+ iCode * ic,
+ int sign)
{
int shCount = (int) floatFromVal (AOP (right)->aopu.aop_lit);
int size;
- D(emitcode ("; genRightShiftLiteral",""));
+ D (emitcode (";", "genRightShiftLiteral"));
freeAsmop (right, NULL, ic, TRUE);
#if VIEW_SIZE
emitcode ("; shift right ", "result %d, left %d", AOP_SIZE (result),
- AOP_SIZE (left));
+ AOP_SIZE (left));
#endif
size = getDataSize (left);
{
size = getDataSize (result);
while (size--)
- movLeft2Result (left, size, result, size, 0);
+ movLeft2Result (left, size, result, size, 0);
}
else if (shCount >= (size * 8))
{
- if (sign) {
- /* get sign in acc.7 */
- MOVA (aopGet (AOP (left), size - 1, FALSE, FALSE));
- }
+ if (sign)
+ {
+ /* get sign in acc.7 */
+ MOVA (aopGet (left, size - 1, FALSE, FALSE));
+ }
addSign (result, LSB, sign);
}
else
{
switch (size)
- {
- case 1:
- genrshOne (result, left, shCount, sign);
- break;
-
- case 2:
- genrshTwo (result, left, shCount, sign);
- break;
-
- case 4:
- genrshFour (result, left, shCount, sign);
- break;
- default:
- break;
- }
+ {
+ case 1:
+ genrshOne (result, left, shCount, sign);
+ break;
+
+ case 2:
+ genrshTwo (result, left, shCount, sign);
+ break;
+
+ case 4:
+ genrshFour (result, left, shCount, sign);
+ break;
+ default:
+ break;
+ }
}
- freeAsmop (left, NULL, ic, TRUE);
freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (left, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
int size, offset;
char *l;
symbol *tlbl, *tlbl1;
+ bool pushedB;
- D(emitcode ("; genSignedRightShift",""));
+ D (emitcode (";", "genSignedRightShift"));
/* we do it the hard way put the shift count in b
and loop thru preserving the sign */
more that 32 bits make no sense anyway, ( the
largest size of an object can be only 32 bits ) */
- emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE));
+ pushedB = pushB ();
+ MOVB (aopGet (right, 0, FALSE, FALSE));
emitcode ("inc", "b");
freeAsmop (right, NULL, ic, TRUE);
aopOp (left, ic, FALSE);
size = AOP_SIZE (result);
offset = 0;
while (size--)
- {
- l = aopGet (AOP (left), offset, FALSE, TRUE);
- if (*l == '@' && IS_AOP_PREG (result))
- {
+ {
+ l = aopGet (left, offset, FALSE, TRUE);
+ if (*l == '@' && IS_AOP_PREG (result))
+ {
- emitcode ("mov", "a,%s", l);
- aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
- }
- else
- aopPut (AOP (result), l, offset, isOperandVolatile (result, FALSE));
- offset++;
- }
+ emitcode ("mov", "a,%s", l);
+ aopPut (result, "a", offset);
+ }
+ else
+ aopPut (result, l, offset);
+ offset++;
+ }
}
/* mov the highest order bit to OVR */
size = AOP_SIZE (result);
offset = size - 1;
- emitcode ("mov", "a,%s", aopGet (AOP (left), offset, FALSE, FALSE));
+ MOVA (aopGet (left, offset, FALSE, FALSE));
emitcode ("rlc", "a");
emitcode ("mov", "ov,c");
/* if it is only one byte then */
if (size == 1)
{
- l = aopGet (AOP (left), 0, FALSE, FALSE);
+ l = aopGet (left, 0, FALSE, FALSE);
MOVA (l);
emitcode ("sjmp", "%05d$", tlbl1->key + 100);
- emitcode ("", "%05d$:", tlbl->key + 100);
+ emitLabel (tlbl);
emitcode ("mov", "c,ov");
emitcode ("rrc", "a");
- emitcode ("", "%05d$:", tlbl1->key + 100);
+ emitLabel (tlbl1);
emitcode ("djnz", "b,%05d$", tlbl->key + 100);
- aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
+ popB (pushedB);
+ aopPut (result, "a", 0);
goto release;
}
reAdjustPreg (AOP (result));
emitcode ("sjmp", "%05d$", tlbl1->key + 100);
- emitcode ("", "%05d$:", tlbl->key + 100);
+ emitLabel (tlbl);
emitcode ("mov", "c,ov");
while (size--)
{
- l = aopGet (AOP (result), offset, FALSE, FALSE);
+ l = aopGet (result, offset, FALSE, FALSE);
MOVA (l);
emitcode ("rrc", "a");
- aopPut (AOP (result), "a", offset--, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", offset--);
}
reAdjustPreg (AOP (result));
- emitcode ("", "%05d$:", tlbl1->key + 100);
+ emitLabel (tlbl1);
emitcode ("djnz", "b,%05d$", tlbl->key + 100);
+ popB (pushedB);
release:
- freeAsmop (left, NULL, ic, TRUE);
freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (left, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
genRightShift (iCode * ic)
{
operand *right, *left, *result;
- sym_link *retype;
+ sym_link *letype;
int size, offset;
char *l;
symbol *tlbl, *tlbl1;
+ bool pushedB;
- D(emitcode ("; genRightShift",""));
+ D (emitcode (";", "genRightShift"));
/* if signed then we do it the hard way preserve the
sign bit moving it inwards */
- retype = getSpec (operandType (IC_RESULT (ic)));
+ letype = getSpec (operandType (IC_LEFT (ic)));
- if (!SPEC_USIGN (retype))
+ if (!SPEC_USIGN (letype))
{
genSignedRightShift (ic);
return;
more that 32 bits make no sense anyway, ( the
largest size of an object can be only 32 bits ) */
- emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE));
+ pushedB = pushB ();
+ MOVB (aopGet (right, 0, FALSE, FALSE));
emitcode ("inc", "b");
freeAsmop (right, NULL, ic, TRUE);
aopOp (left, ic, FALSE);
if (!sameRegs (AOP (left), AOP (result)) &&
AOP_SIZE (result) > 1)
{
-
size = AOP_SIZE (result);
offset = 0;
while (size--)
- {
- l = aopGet (AOP (left), offset, FALSE, TRUE);
- if (*l == '@' && IS_AOP_PREG (result))
- {
+ {
+ l = aopGet (left, offset, FALSE, TRUE);
+ if (*l == '@' && IS_AOP_PREG (result))
+ {
- emitcode ("mov", "a,%s", l);
- aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
- }
- else
- aopPut (AOP (result), l, offset, isOperandVolatile (result, FALSE));
- offset++;
- }
+ emitcode ("mov", "a,%s", l);
+ aopPut (result, "a", offset);
+ }
+ else
+ aopPut (result, l, offset);
+ offset++;
+ }
}
tlbl = newiTempLabel (NULL);
/* if it is only one byte then */
if (size == 1)
{
- l = aopGet (AOP (left), 0, FALSE, FALSE);
+ l = aopGet (left, 0, FALSE, FALSE);
MOVA (l);
emitcode ("sjmp", "%05d$", tlbl1->key + 100);
- emitcode ("", "%05d$:", tlbl->key + 100);
+ emitLabel (tlbl);
CLRC;
emitcode ("rrc", "a");
- emitcode ("", "%05d$:", tlbl1->key + 100);
+ emitLabel (tlbl1);
emitcode ("djnz", "b,%05d$", tlbl->key + 100);
- aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
+ popB (pushedB);
+ aopPut (result, "a", 0);
goto release;
}
reAdjustPreg (AOP (result));
emitcode ("sjmp", "%05d$", tlbl1->key + 100);
- emitcode ("", "%05d$:", tlbl->key + 100);
+ emitLabel (tlbl);
CLRC;
while (size--)
{
- l = aopGet (AOP (result), offset, FALSE, FALSE);
+ l = aopGet (result, offset, FALSE, FALSE);
MOVA (l);
emitcode ("rrc", "a");
- aopPut (AOP (result), "a", offset--, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", offset--);
}
reAdjustPreg (AOP (result));
- emitcode ("", "%05d$:", tlbl1->key + 100);
+ emitLabel (tlbl1);
emitcode ("djnz", "b,%05d$", tlbl->key + 100);
+ popB (pushedB);
release:
- freeAsmop (left, NULL, ic, TRUE);
freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (left, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
emitcode ("mov", "b,a");
emitcode ("movx", "a,@%s", rname);
break;
-
+
case FPOINTER:
if (preserveAinB)
emitcode ("mov", "b,a");
MOVA (src);
emitcode ("movx", "@%s,a", rname);
break;
-
+
case FPOINTER:
MOVA (src);
emitcode ("movx", "@dptr,a");
/* genUnpackBits - generates code for unpacking bits */
/*-----------------------------------------------------------------*/
static void
-genUnpackBits (operand * result, char *rname, int ptype)
-{
- int offset = 0; /* result byte offset */
- int rsize; /* result size */
- int rlen = 0; /* remaining bitfield length */
- sym_link *etype; /* bitfield type information */
- int blen; /* bitfield length */
- int bstr; /* bitfield starting bit within byte */
+genUnpackBits (operand * result, char *rname, int ptype, iCode *ifx)
+{
+ int offset = 0; /* result byte offset */
+ int rsize; /* result size */
+ int rlen = 0; /* remaining bitfield length */
+ sym_link *etype; /* bitfield type information */
+ int blen; /* bitfield length */
+ int bstr; /* bitfield starting bit within byte */
+ char buffer[10];
D(emitcode ("; genUnpackBits",""));
blen = SPEC_BLEN (etype);
bstr = SPEC_BSTR (etype);
+ if (ifx && blen <= 8)
+ {
+ emitPtrByteGet (rname, ptype, FALSE);
+ if (blen == 1)
+ {
+ SNPRINTF (buffer, sizeof(buffer),
+ "acc.%d", bstr);
+ genIfxJump (ifx, buffer, NULL, NULL, NULL);
+ }
+ else
+ {
+ if (blen < 8)
+ emitcode ("anl", "a,#0x%02x",
+ (((unsigned char) -1) >> (8 - blen)) << bstr);
+ genIfxJump (ifx, "a", NULL, NULL, NULL);
+ }
+ return;
+ }
+ wassert (!ifx);
+
/* If the bitfield length is less than a byte */
if (blen < 8)
{
emitPtrByteGet (rname, ptype, FALSE);
- AccRsh (bstr);
+ AccRol (8 - bstr);
emitcode ("anl", "a,#0x%02x", ((unsigned char) -1) >> (8 - blen));
- aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
+ if (!SPEC_USIGN (etype))
+ {
+ /* signed bitfield */
+ symbol *tlbl = newiTempLabel (NULL);
+
+ emitcode ("jnb", "acc.%d,%05d$", blen - 1, tlbl->key + 100);
+ emitcode ("orl", "a,#0x%02x", (unsigned char) (0xff << blen));
+ emitLabel (tlbl);
+ }
+ aopPut (result, "a", offset++);
goto finish;
}
for (rlen=blen;rlen>=8;rlen-=8)
{
emitPtrByteGet (rname, ptype, FALSE);
- aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", offset++);
if (rlen>8)
emitcode ("inc", "%s", rname);
}
{
emitPtrByteGet (rname, ptype, FALSE);
emitcode ("anl", "a,#0x%02x", ((unsigned char) -1) >> (8-rlen));
- aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
+ if (!SPEC_USIGN (etype))
+ {
+ /* signed bitfield */
+ symbol *tlbl = newiTempLabel (NULL);
+
+ emitcode ("jnb", "acc.%d,%05d$", rlen - 1, tlbl->key + 100);
+ emitcode ("orl", "a,#0x%02x", (unsigned char) (0xff << rlen));
+ emitLabel (tlbl);
+ }
+ aopPut (result, "a", offset++);
}
finish:
if (offset < rsize)
{
+ char *source;
+
+ if (SPEC_USIGN (etype))
+ source = zero;
+ else
+ {
+ /* signed bitfield: sign extension with 0x00 or 0xff */
+ emitcode ("rlc", "a");
+ emitcode ("subb", "a,acc");
+
+ source = "a";
+ }
rsize -= offset;
while (rsize--)
- aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE));
+ aopPut (result, source, offset++);
}
}
/*-----------------------------------------------------------------*/
static void
genDataPointerGet (operand * left,
- operand * result,
- iCode * ic)
+ operand * result,
+ iCode * ic)
{
char *l;
char buffer[256];
int size, offset = 0;
- D(emitcode ("; genDataPointerGet",""));
+ D (emitcode (";", "genDataPointerGet"));
aopOp (result, ic, TRUE);
/* get the string representation of the name */
- l = aopGet (AOP (left), 0, FALSE, TRUE);
+ l = aopGet (left, 0, FALSE, TRUE);
size = AOP_SIZE (result);
while (size--)
{
if (offset)
- sprintf (buffer, "(%s + %d)", l + 1, offset);
+ {
+ SNPRINTF (buffer, sizeof(buffer),
+ "(%s + %d)", l + 1, offset);
+ }
else
- sprintf (buffer, "%s", l + 1);
- aopPut (AOP (result), buffer, offset++, isOperandVolatile (result, FALSE));
+ {
+ SNPRINTF (buffer, sizeof(buffer),
+ "%s", l + 1);
+ }
+ aopPut (result, buffer, offset++);
}
- freeAsmop (left, NULL, ic, TRUE);
freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (left, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
static void
genNearPointerGet (operand * left,
- operand * result,
- iCode * ic,
- iCode * pi)
+ operand * result,
+ iCode * ic,
+ iCode * pi,
+ iCode * ifx)
{
asmop *aop = NULL;
regs *preg = NULL;
sym_link *ltype = operandType (left);
char buffer[80];
- D(emitcode ("; genNearPointerGet",""));
+ D (emitcode (";", "genNearPointerGet"));
rtype = operandType (result);
retype = getSpec (rtype);
aopOp (left, ic, FALSE);
/* if left is rematerialisable and
- result is not bit variable type and
+ result is not bitfield variable type and
the left is pointer to data space i.e
lower 128 bytes of space */
if (AOP_TYPE (left) == AOP_IMMD &&
- !IS_BITVAR (retype) &&
+ !IS_BITFIELD (retype) &&
DCL_TYPE (ltype) == POINTER)
{
genDataPointerGet (left, result, ic);
if (!AOP_INPREG (AOP (left)))
{
if (IS_AOP_PREG (left))
- {
- // Aha, it is a pointer, just in disguise.
- rname = aopGet (AOP (left), 0, FALSE, FALSE);
- if (*rname != '@')
- {
- fprintf(stderr, "probable internal error: unexpected rname @ %s:%d\n",
- __FILE__, __LINE__);
- }
- else
- {
- // Expected case.
- emitcode ("mov", "a%s,%s", rname + 1, rname);
- rname++; // skip the '@'.
- }
- }
+ {
+ // Aha, it is a pointer, just in disguise.
+ rname = aopGet (left, 0, FALSE, FALSE);
+ if (*rname != '@')
+ {
+ fprintf(stderr, "probable internal error: unexpected rname @ %s:%d\n",
+ __FILE__, __LINE__);
+ }
+ else
+ {
+ // Expected case.
+ emitcode ("mov", "a%s,%s", rname + 1, rname);
+ rname++; // skip the '@'.
+ }
+ }
else
- {
- /* otherwise get a free pointer register */
- aop = newAsmop (0);
- preg = getFreePtr (ic, &aop, FALSE);
- emitcode ("mov", "%s,%s",
- preg->name,
- aopGet (AOP (left), 0, FALSE, TRUE));
- rname = preg->name;
- }
+ {
+ /* otherwise get a free pointer register */
+ aop = newAsmop (0);
+ preg = getFreePtr (ic, &aop, FALSE);
+ emitcode ("mov", "%s,%s",
+ preg->name,
+ aopGet (left, 0, FALSE, TRUE));
+ rname = preg->name;
+ }
}
else
- rname = aopGet (AOP (left), 0, FALSE, FALSE);
+ rname = aopGet (left, 0, FALSE, FALSE);
//aopOp (result, ic, FALSE);
aopOp (result, ic, result?TRUE:FALSE);
/* if bitfield then unpack the bits */
- if (IS_BITVAR (retype))
- genUnpackBits (result, rname, POINTER);
+ if (IS_BITFIELD (retype))
+ genUnpackBits (result, rname, POINTER, ifx);
else
{
/* we have can just get the values */
int offset = 0;
while (size--)
- {
- if (IS_AOP_PREG (result) || AOP_TYPE (result) == AOP_STK)
- {
-
- emitcode ("mov", "a,@%s", rname);
- aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
- }
- else
- {
- sprintf (buffer, "@%s", rname);
- aopPut (AOP (result), buffer, offset, isOperandVolatile (result, FALSE));
- }
- offset++;
- if (size || pi)
- emitcode ("inc", "%s", rname);
- }
+ {
+ if (ifx || IS_AOP_PREG (result) || AOP_TYPE (result) == AOP_STK)
+ {
+
+ emitcode ("mov", "a,@%s", rname);
+ if (!ifx)
+ aopPut (result, "a", offset);
+ }
+ else
+ {
+ SNPRINTF (buffer, sizeof(buffer), "@%s", rname);
+ aopPut (result, buffer, offset);
+ }
+ offset++;
+ if (size || pi)
+ emitcode ("inc", "%s", rname);
+ }
}
/* now some housekeeping stuff */
if (aop) /* we had to allocate for this iCode */
{
if (pi) { /* post increment present */
- aopPut(AOP ( left ),rname,0, isOperandVolatile (left, FALSE));
+ aopPut (left, rname, 0);
}
freeAsmop (NULL, aop, ic, RESULTONSTACK (ic) ? FALSE : TRUE);
}
we have to point it back to where it
belongs */
if ((AOP_SIZE (result) > 1 &&
- !OP_SYMBOL (left)->remat &&
- (OP_SYMBOL (left)->liveTo > ic->seq ||
- ic->depth)) &&
- !pi)
- {
- int size = AOP_SIZE (result) - 1;
- while (size--)
- emitcode ("dec", "%s", rname);
- }
+ !OP_SYMBOL (left)->remat &&
+ (OP_SYMBOL (left)->liveTo > ic->seq ||
+ ic->depth)) &&
+ !pi)
+ {
+ int size = AOP_SIZE (result) - 1;
+ while (size--)
+ emitcode ("dec", "%s", rname);
+ }
+ }
+
+ if (ifx && !ifx->generated)
+ {
+ genIfxJump (ifx, "a", left, NULL, result);
}
/* done */
/*-----------------------------------------------------------------*/
static void
genPagedPointerGet (operand * left,
- operand * result,
- iCode * ic,
- iCode *pi)
+ operand * result,
+ iCode * ic,
+ iCode *pi,
+ iCode *ifx)
{
asmop *aop = NULL;
regs *preg = NULL;
char *rname;
sym_link *rtype, *retype;
- D(emitcode ("; genPagedPointerGet",""));
+ D (emitcode (";", "genPagedPointerGet"));
rtype = operandType (result);
retype = getSpec (rtype);
aop = newAsmop (0);
preg = getFreePtr (ic, &aop, FALSE);
emitcode ("mov", "%s,%s",
- preg->name,
- aopGet (AOP (left), 0, FALSE, TRUE));
+ preg->name,
+ aopGet (left, 0, FALSE, TRUE));
rname = preg->name;
}
else
- rname = aopGet (AOP (left), 0, FALSE, FALSE);
+ rname = aopGet (left, 0, FALSE, FALSE);
aopOp (result, ic, FALSE);
/* if bitfield then unpack the bits */
- if (IS_BITVAR (retype))
- genUnpackBits (result, rname, PPOINTER);
+ if (IS_BITFIELD (retype))
+ genUnpackBits (result, rname, PPOINTER, ifx);
else
{
/* we have can just get the values */
int offset = 0;
while (size--)
- {
+ {
- emitcode ("movx", "a,@%s", rname);
- aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
+ emitcode ("movx", "a,@%s", rname);
+ if (!ifx)
+ aopPut (result, "a", offset);
- offset++;
+ offset++;
- if (size || pi)
- emitcode ("inc", "%s", rname);
- }
+ if (size || pi)
+ emitcode ("inc", "%s", rname);
+ }
}
/* now some housekeeping stuff */
if (aop) /* we had to allocate for this iCode */
{
- if (pi) aopPut ( AOP (left), rname, 0, isOperandVolatile (left, FALSE));
+ if (pi)
+ aopPut (left, rname, 0);
freeAsmop (NULL, aop, ic, TRUE);
}
else
we have to point it back to where it
belongs */
if ((AOP_SIZE (result) > 1 &&
- !OP_SYMBOL (left)->remat &&
- (OP_SYMBOL (left)->liveTo > ic->seq ||
- ic->depth)) &&
- !pi)
- {
- int size = AOP_SIZE (result) - 1;
- while (size--)
- emitcode ("dec", "%s", rname);
- }
+ !OP_SYMBOL (left)->remat &&
+ (OP_SYMBOL (left)->liveTo > ic->seq ||
+ ic->depth)) &&
+ !pi)
+ {
+ int size = AOP_SIZE (result) - 1;
+ while (size--)
+ emitcode ("dec", "%s", rname);
+ }
+ }
+
+ if (ifx && !ifx->generated)
+ {
+ genIfxJump (ifx, "a", left, NULL, result);
}
/* done */
- freeAsmop (left, NULL, ic, TRUE);
freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (left, NULL, ic, TRUE);
if (pi) pi->generated = 1;
+}
+/*--------------------------------------------------------------------*/
+/* loadDptrFromOperand - load dptr (and optionally B) from operand op */
+/*--------------------------------------------------------------------*/
+static void
+loadDptrFromOperand (operand *op, bool loadBToo)
+{
+ if (AOP_TYPE (op) != AOP_STR)
+ {
+ /* if this is rematerializable */
+ if (AOP_TYPE (op) == AOP_IMMD)
+ {
+ emitcode ("mov", "dptr,%s", aopGet (op, 0, TRUE, FALSE));
+ if (loadBToo)
+ {
+ if (AOP(op)->aopu.aop_immd.from_cast_remat)
+ emitcode ("mov", "b,%s",aopGet (op, AOP_SIZE(op)-1, FALSE, FALSE));
+ else
+ {
+ wassertl(FALSE, "need pointerCode");
+ emitcode ("", "; mov b,???");
+ /* genPointerGet and genPointerSet originally did different
+ ** things for this case. Both seem wrong.
+ ** from genPointerGet:
+ ** emitcode ("mov", "b,#%d", pointerCode (retype));
+ ** from genPointerSet:
+ ** emitcode ("mov", "b,%s + 1", aopGet (result, 0, TRUE, FALSE));
+ */
+ }
+ }
+ }
+ else if (AOP_TYPE (op) == AOP_DPTR)
+ {
+ if (loadBToo)
+ {
+ MOVA (aopGet (op, 0, FALSE, FALSE));
+ emitcode ("push", "acc");
+ MOVA (aopGet (op, 1, FALSE, FALSE));
+ emitcode ("push", "acc");
+ emitcode ("mov", "b,%s", aopGet (op, 2, FALSE, FALSE));
+ emitcode ("pop", "dph");
+ emitcode ("pop", "dpl");
+ }
+ else
+ {
+ MOVA (aopGet (op, 0, FALSE, FALSE));
+ emitcode ("push", "acc");
+ emitcode ("mov", "dph,%s", aopGet (op, 1, FALSE, FALSE));
+ emitcode ("pop", "dpl");
+ }
+ }
+ else
+ { /* we need to get it byte by byte */
+ emitcode ("mov", "dpl,%s", aopGet (op, 0, FALSE, FALSE));
+ emitcode ("mov", "dph,%s", aopGet (op, 1, FALSE, FALSE));
+ if (loadBToo)
+ emitcode ("mov", "b,%s", aopGet (op, 2, FALSE, FALSE));
+ }
+ }
}
/*-----------------------------------------------------------------*/
-/* genFarPointerGet - gget value from far space */
+/* genFarPointerGet - get value from far space */
/*-----------------------------------------------------------------*/
static void
genFarPointerGet (operand * left,
- operand * result, iCode * ic, iCode * pi)
+ operand * result, iCode * ic, iCode * pi, iCode * ifx)
{
int size, offset;
sym_link *retype = getSpec (operandType (result));
- D(emitcode ("; genFarPointerGet",""));
+ D (emitcode (";", "genFarPointerGet"));
aopOp (left, ic, FALSE);
+ loadDptrFromOperand (left, FALSE);
- /* if the operand is already in dptr
- then we do nothing else we move the value to dptr */
- if (AOP_TYPE (left) != AOP_STR)
- {
- /* if this is remateriazable */
- if (AOP_TYPE (left) == AOP_IMMD)
- emitcode ("mov", "dptr,%s", aopGet (AOP (left), 0, TRUE, FALSE));
- else
- { /* we need to get it byte by byte */
- emitcode ("mov", "dpl,%s", aopGet (AOP (left), 0, FALSE, FALSE));
- emitcode ("mov", "dph,%s", aopGet (AOP (left), 1, FALSE, FALSE));
- }
- }
- /* so dptr know contains the address */
+ /* so dptr now contains the address */
aopOp (result, ic, FALSE);
/* if bit then unpack */
- if (IS_BITVAR (retype))
- genUnpackBits (result, "dptr", FPOINTER);
+ if (IS_BITFIELD (retype))
+ genUnpackBits (result, "dptr", FPOINTER, ifx);
else
{
size = AOP_SIZE (result);
offset = 0;
while (size--)
- {
- emitcode ("movx", "a,@dptr");
- aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
- if (size || pi)
- emitcode ("inc", "dptr");
- }
- }
-
- if (pi && AOP_TYPE (left) != AOP_IMMD && AOP_TYPE (left) != AOP_STR) {
- aopPut ( AOP (left), "dpl", 0, isOperandVolatile (left, FALSE));
- aopPut ( AOP (left), "dph", 1, isOperandVolatile (left, FALSE));
- pi->generated = 1;
- }
- freeAsmop (left, NULL, ic, TRUE);
+ {
+ emitcode ("movx", "a,@dptr");
+ if (!ifx)
+ aopPut (result, "a", offset++);
+ if (size || pi)
+ emitcode ("inc", "dptr");
+ }
+ }
+
+ if (pi && AOP_TYPE (left) != AOP_IMMD && AOP_TYPE (left) != AOP_STR)
+ {
+ aopPut (left, "dpl", 0);
+ aopPut (left, "dph", 1);
+ pi->generated = 1;
+ }
+
+ if (ifx && !ifx->generated)
+ {
+ genIfxJump (ifx, "a", left, NULL, result);
+ }
+
freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (left, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
-/* genCodePointerGet - gget value from code space */
+/* genCodePointerGet - get value from code space */
/*-----------------------------------------------------------------*/
static void
genCodePointerGet (operand * left,
- operand * result, iCode * ic, iCode *pi)
+ operand * result, iCode * ic, iCode *pi, iCode *ifx)
{
int size, offset;
sym_link *retype = getSpec (operandType (result));
- D(emitcode ("; genCodePointerGet",""));
+ D (emitcode (";", "genCodePointerGet"));
aopOp (left, ic, FALSE);
+ loadDptrFromOperand (left, FALSE);
- /* if the operand is already in dptr
- then we do nothing else we move the value to dptr */
- if (AOP_TYPE (left) != AOP_STR)
- {
- /* if this is remateriazable */
- if (AOP_TYPE (left) == AOP_IMMD)
- emitcode ("mov", "dptr,%s", aopGet (AOP (left), 0, TRUE, FALSE));
- else
- { /* we need to get it byte by byte */
- emitcode ("mov", "dpl,%s", aopGet (AOP (left), 0, FALSE, FALSE));
- emitcode ("mov", "dph,%s", aopGet (AOP (left), 1, FALSE, FALSE));
- }
- }
- /* so dptr know contains the address */
+ /* so dptr now contains the address */
aopOp (result, ic, FALSE);
/* if bit then unpack */
- if (IS_BITVAR (retype))
- genUnpackBits (result, "dptr", CPOINTER);
+ if (IS_BITFIELD (retype))
+ genUnpackBits (result, "dptr", CPOINTER, ifx);
else
{
size = AOP_SIZE (result);
offset = 0;
while (size--)
- {
- if (pi)
- {
- emitcode ("clr", "a");
- emitcode ("movc", "a,@a+dptr");
- aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
- emitcode ("inc", "dptr");
- }
- else
- {
- emitcode ("mov", "a,#0x%02x", offset);
- emitcode ("movc", "a,@a+dptr");
- aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
- }
- }
- }
-
- if (pi && AOP_TYPE (left) != AOP_IMMD && AOP_TYPE (left) != AOP_STR) {
- aopPut ( AOP (left), "dpl", 0, isOperandVolatile (left, FALSE));
- aopPut ( AOP (left), "dph", 1, isOperandVolatile (left, FALSE));
- pi->generated = 1;
- }
- freeAsmop (left, NULL, ic, TRUE);
+ {
+ emitcode ("clr", "a");
+ emitcode ("movc", "a,@a+dptr");
+ if (!ifx)
+ aopPut (result, "a", offset++);
+ if (size || pi)
+ emitcode ("inc", "dptr");
+ }
+ }
+
+ if (pi && AOP_TYPE (left) != AOP_IMMD && AOP_TYPE (left) != AOP_STR)
+ {
+ aopPut (left, "dpl", 0);
+ aopPut (left, "dph", 1);
+ pi->generated = 1;
+ }
+
+ if (ifx && !ifx->generated)
+ {
+ genIfxJump (ifx, "a", left, NULL, result);
+ }
+
freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (left, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
-/* genGenPointerGet - gget value from generic pointer space */
+/* genGenPointerGet - get value from generic pointer space */
/*-----------------------------------------------------------------*/
static void
genGenPointerGet (operand * left,
- operand * result, iCode * ic, iCode *pi)
+ operand * result, iCode * ic, iCode *pi, iCode *ifx)
{
int size, offset;
sym_link *retype = getSpec (operandType (result));
- D(emitcode ("; genGenPointerGet",""));
+ D (emitcode (";", "genGenPointerGet"));
aopOp (left, ic, FALSE);
+ loadDptrFromOperand (left, TRUE);
- /* if the operand is already in dptr
- then we do nothing else we move the value to dptr */
- if (AOP_TYPE (left) != AOP_STR)
- {
- /* if this is remateriazable */
- if (AOP_TYPE (left) == AOP_IMMD)
- {
- emitcode ("mov", "dptr,%s", aopGet (AOP (left), 0, TRUE, FALSE));
- if (AOP(left)->aopu.aop_immd.from_cast_remat)
- emitcode ("mov", "b,%s",aopGet(AOP (left), AOP_SIZE(left)-1, FALSE, FALSE));
- else
- emitcode ("mov", "b,#%d", pointerCode (retype));
- }
- else
- { /* we need to get it byte by byte */
- emitcode ("mov", "dpl,%s", aopGet (AOP (left), 0, FALSE, FALSE));
- emitcode ("mov", "dph,%s", aopGet (AOP (left), 1, FALSE, FALSE));
- emitcode ("mov", "b,%s", aopGet (AOP (left), 2, FALSE, FALSE));
- }
- }
- /* so dptr know contains the address */
+ /* so dptr now contains the address */
aopOp (result, ic, FALSE);
/* if bit then unpack */
- if (IS_BITVAR (retype))
- genUnpackBits (result, "dptr", GPOINTER);
+ if (IS_BITFIELD (retype))
+ {
+ genUnpackBits (result, "dptr", GPOINTER, ifx);
+ }
else
{
size = AOP_SIZE (result);
offset = 0;
while (size--)
- {
- emitcode ("lcall", "__gptrget");
- aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
- if (size || pi)
- emitcode ("inc", "dptr");
- }
- }
-
- if (pi && AOP_TYPE (left) != AOP_IMMD && AOP_TYPE (left) != AOP_STR) {
- aopPut ( AOP (left), "dpl", 0, isOperandVolatile (left, FALSE));
- aopPut ( AOP (left), "dph", 1, isOperandVolatile (left, FALSE));
- pi->generated = 1;
- }
- freeAsmop (left, NULL, ic, TRUE);
+ {
+ emitcode ("lcall", "__gptrget");
+ if (!ifx)
+ aopPut (result, "a", offset++);
+ if (size || pi)
+ emitcode ("inc", "dptr");
+ }
+ }
+
+ if (pi && AOP_TYPE (left) != AOP_IMMD && AOP_TYPE (left) != AOP_STR)
+ {
+ aopPut (left, "dpl", 0);
+ aopPut (left, "dph", 1);
+ pi->generated = 1;
+ }
+
+ if (ifx && !ifx->generated)
+ {
+ genIfxJump (ifx, "a", left, NULL, result);
+ }
+
freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (left, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
/* genPointerGet - generate code for pointer get */
/*-----------------------------------------------------------------*/
static void
-genPointerGet (iCode * ic, iCode *pi)
+genPointerGet (iCode * ic, iCode *pi, iCode *ifx)
{
operand *left, *result;
sym_link *type, *etype;
int p_type;
- D(emitcode ("; genPointerGet",""));
+ D (emitcode (";", "genPointerGet"));
left = IC_LEFT (ic);
result = IC_RESULT (ic);
+ if (getSize (operandType (result))>1)
+ ifx = NULL;
+
/* depending on the type of pointer we need to
move it to the correct pointer register */
type = operandType (left);
/* special case when cast remat */
if (p_type == GPOINTER && OP_SYMBOL(left)->remat &&
- IS_CAST_ICODE(OP_SYMBOL(left)->rematiCode)) {
- left = IC_RIGHT(OP_SYMBOL(left)->rematiCode);
- type = operandType (left);
- p_type = DCL_TYPE (type);
- }
+ IS_CAST_ICODE(OP_SYMBOL(left)->rematiCode))
+ {
+ left = IC_RIGHT(OP_SYMBOL(left)->rematiCode);
+ type = operandType (left);
+ p_type = DCL_TYPE (type);
+ }
/* now that we have the pointer type we assign
the pointer values */
switch (p_type)
case POINTER:
case IPOINTER:
- genNearPointerGet (left, result, ic, pi);
+ genNearPointerGet (left, result, ic, pi, ifx);
break;
case PPOINTER:
- genPagedPointerGet (left, result, ic, pi);
+ genPagedPointerGet (left, result, ic, pi, ifx);
break;
case FPOINTER:
- genFarPointerGet (left, result, ic, pi);
+ genFarPointerGet (left, result, ic, pi, ifx);
break;
case CPOINTER:
- genCodePointerGet (left, result, ic, pi);
+ genCodePointerGet (left, result, ic, pi, ifx);
break;
case GPOINTER:
- genGenPointerGet (left, result, ic, pi);
+ genGenPointerGet (left, result, ic, pi, ifx);
break;
}
-
}
-
/*-----------------------------------------------------------------*/
/* genPackBits - generates code for packed bit storage */
/*-----------------------------------------------------------------*/
static void
genPackBits (sym_link * etype,
- operand * right,
- char *rname, int p_type)
+ operand * right,
+ char *rname, int p_type)
{
- int offset = 0; /* source byte offset */
- int rlen = 0; /* remaining bitfield length */
- int blen; /* bitfield length */
- int bstr; /* bitfield starting bit within byte */
- int litval; /* source literal value (if AOP_LIT) */
- unsigned char mask; /* bitmask within current byte */
+ int offset = 0; /* source byte offset */
+ int rlen = 0; /* remaining bitfield length */
+ int blen; /* bitfield length */
+ int bstr; /* bitfield starting bit within byte */
+ int litval; /* source literal value (if AOP_LIT) */
+ unsigned char mask; /* bitmask within current byte */
D(emitcode ("; genPackBits",""));
if (blen < 8)
{
mask = ((unsigned char) (0xFF << (blen + bstr)) |
- (unsigned char) (0xFF >> (8 - bstr)));
+ (unsigned char) (0xFF >> (8 - bstr)));
if (AOP_TYPE (right) == AOP_LIT)
{
emitcode ("mov", "c,%s", AOP(right)->aopu.aop_dir);
else
{
- MOVA (aopGet (AOP (right), 0, FALSE, FALSE));
+ MOVA (aopGet (right, 0, FALSE, FALSE));
emitcode ("rrc","a");
}
emitPtrByteGet (rname, p_type, FALSE);
}
else
{
+ bool pushedB;
/* Case with a bitfield length < 8 and arbitrary source
*/
- MOVA (aopGet (AOP (right), 0, FALSE, FALSE));
+ MOVA (aopGet (right, 0, FALSE, FALSE));
/* shift and mask source value */
AccLsh (bstr);
emitcode ("anl", "a,#0x%02x", (~mask) & 0xff);
- /* transfer A to B and get next byte */
+ pushedB = pushB ();
+ /* transfer A to B and get next byte */
emitPtrByteGet (rname, p_type, TRUE);
emitcode ("anl", "a,#0x%02x", mask);
emitcode ("orl", "a,b");
if (p_type == GPOINTER)
emitcode ("pop", "b");
+
+ popB (pushedB);
}
}
/* all except the partial byte at the end */
for (rlen=blen;rlen>=8;rlen-=8)
{
- emitPtrByteSet (rname, p_type,
- aopGet (AOP (right), offset++, FALSE, TRUE) );
+ emitPtrByteSet (rname, p_type,
+ aopGet (right, offset++, FALSE, TRUE) );
if (rlen>8)
emitcode ("inc", "%s", rname);
}
if (rlen)
{
mask = (((unsigned char) -1 << rlen) & 0xff);
-
+
if (AOP_TYPE (right) == AOP_LIT)
{
/* Case with partial byte and literal source
}
else
{
+ bool pushedB;
/* Case with partial byte and arbitrary source
*/
- MOVA (aopGet (AOP (right), offset++, FALSE, FALSE));
+ MOVA (aopGet (right, offset++, FALSE, FALSE));
emitcode ("anl", "a,#0x%02x", (~mask) & 0xff);
- /* transfer A to B and get next byte */
+ pushedB = pushB ();
+ /* transfer A to B and get next byte */
emitPtrByteGet (rname, p_type, TRUE);
emitcode ("anl", "a,#0x%02x", mask);
emitcode ("orl", "a,b");
if (p_type == GPOINTER)
emitcode ("pop", "b");
+
+ popB (pushedB);
}
emitPtrByteSet (rname, p_type, "a");
}
-
}
/*-----------------------------------------------------------------*/
static void
genDataPointerSet (operand * right,
- operand * result,
- iCode * ic)
+ operand * result,
+ iCode * ic)
{
int size, offset = 0;
char *l, buffer[256];
- D(emitcode ("; genDataPointerSet",""));
+ D (emitcode (";", "genDataPointerSet"));
aopOp (right, ic, FALSE);
- l = aopGet (AOP (result), 0, FALSE, TRUE);
+ l = aopGet (result, 0, FALSE, TRUE);
size = AOP_SIZE (right);
while (size--)
{
if (offset)
- sprintf (buffer, "(%s + %d)", l + 1, offset);
+ SNPRINTF (buffer, sizeof(buffer), "(%s + %d)", l + 1, offset);
else
- sprintf (buffer, "%s", l + 1);
+ SNPRINTF (buffer, sizeof(buffer), "%s", l + 1);
emitcode ("mov", "%s,%s", buffer,
- aopGet (AOP (right), offset++, FALSE, FALSE));
+ aopGet (right, offset++, FALSE, FALSE));
}
- freeAsmop (right, NULL, ic, TRUE);
freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (right, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
static void
genNearPointerSet (operand * right,
- operand * result,
- iCode * ic,
- iCode * pi)
+ operand * result,
+ iCode * ic,
+ iCode * pi)
{
asmop *aop = NULL;
regs *preg = NULL;
sym_link *retype, *letype;
sym_link *ptype = operandType (result);
- D(emitcode ("; genNearPointerSet",""));
+ D (emitcode (";", "genNearPointerSet"));
retype = getSpec (operandType (right));
letype = getSpec (ptype);
+
aopOp (result, ic, FALSE);
/* if the result is rematerializable &
then don't need anything more */
if (!AOP_INPREG (AOP (result)))
{
- if (
- //AOP_TYPE (result) == AOP_STK
- IS_AOP_PREG(result)
- )
- {
- // Aha, it is a pointer, just in disguise.
- rname = aopGet (AOP (result), 0, FALSE, FALSE);
- if (*rname != '@')
- {
- fprintf(stderr, "probable internal error: unexpected rname @ %s:%d\n",
- __FILE__, __LINE__);
- }
- else
- {
- // Expected case.
- emitcode ("mov", "a%s,%s", rname + 1, rname);
- rname++; // skip the '@'.
- }
- }
- else
- {
- /* otherwise get a free pointer register */
- aop = newAsmop (0);
- preg = getFreePtr (ic, &aop, FALSE);
- emitcode ("mov", "%s,%s",
- preg->name,
- aopGet (AOP (result), 0, FALSE, TRUE));
- rname = preg->name;
- }
+ if (
+ //AOP_TYPE (result) == AOP_STK
+ IS_AOP_PREG(result)
+ )
+ {
+ // Aha, it is a pointer, just in disguise.
+ rname = aopGet (result, 0, FALSE, FALSE);
+ if (*rname != '@')
+ {
+ fprintf(stderr, "probable internal error: unexpected rname @ %s:%d\n",
+ __FILE__, __LINE__);
+ }
+ else
+ {
+ // Expected case.
+ emitcode ("mov", "a%s,%s", rname + 1, rname);
+ rname++; // skip the '@'.
+ }
+ }
+ else
+ {
+ /* otherwise get a free pointer register */
+ aop = newAsmop (0);
+ preg = getFreePtr (ic, &aop, FALSE);
+ emitcode ("mov", "%s,%s",
+ preg->name,
+ aopGet (result, 0, FALSE, TRUE));
+ rname = preg->name;
+ }
}
else
{
- rname = aopGet (AOP (result), 0, FALSE, FALSE);
+ rname = aopGet (result, 0, FALSE, FALSE);
}
aopOp (right, ic, FALSE);
/* if bitfield then unpack the bits */
- if (IS_BITVAR (retype) || IS_BITVAR (letype))
- genPackBits ((IS_BITVAR (retype) ? retype : letype), right, rname, POINTER);
+ if (IS_BITFIELD (retype) || IS_BITFIELD (letype))
+ genPackBits ((IS_BITFIELD (retype) ? retype : letype), right, rname, POINTER);
else
{
- /* we have can just get the values */
+ /* we can just get the values */
int size = AOP_SIZE (right);
int offset = 0;
while (size--)
- {
- l = aopGet (AOP (right), offset, FALSE, TRUE);
- if (*l == '@')
- {
- MOVA (l);
- emitcode ("mov", "@%s,a", rname);
- }
- else
- emitcode ("mov", "@%s,%s", rname, l);
- if (size || pi)
- emitcode ("inc", "%s", rname);
- offset++;
- }
+ {
+ l = aopGet (right, offset, FALSE, TRUE);
+ if ((*l == '@') || (strcmp (l, "acc") == 0))
+ {
+ MOVA (l);
+ emitcode ("mov", "@%s,a", rname);
+ }
+ else
+ emitcode ("mov", "@%s,%s", rname, l);
+ if (size || pi)
+ emitcode ("inc", "%s", rname);
+ offset++;
+ }
}
/* now some housekeeping stuff */
if (aop) /* we had to allocate for this iCode */
{
if (pi)
- aopPut (AOP (result), rname, 0, isOperandVolatile (result, FALSE));
+ aopPut (result, rname, 0);
freeAsmop (NULL, aop, ic, TRUE);
}
else
we have to point it back to where it
belongs */
if ((AOP_SIZE (right) > 1 &&
- !OP_SYMBOL (result)->remat &&
- (OP_SYMBOL (result)->liveTo > ic->seq ||
- ic->depth)) &&
- !pi)
- {
- int size = AOP_SIZE (right) - 1;
- while (size--)
- emitcode ("dec", "%s", rname);
- }
+ !OP_SYMBOL (result)->remat &&
+ (OP_SYMBOL (result)->liveTo > ic->seq ||
+ ic->depth)) &&
+ !pi)
+ {
+ int size = AOP_SIZE (right) - 1;
+ while (size--)
+ emitcode ("dec", "%s", rname);
+ }
}
/* done */
/*-----------------------------------------------------------------*/
static void
genPagedPointerSet (operand * right,
- operand * result,
- iCode * ic,
- iCode * pi)
+ operand * result,
+ iCode * ic,
+ iCode * pi)
{
asmop *aop = NULL;
regs *preg = NULL;
char *rname, *l;
sym_link *retype, *letype;
- D(emitcode ("; genPagedPointerSet",""));
+ D (emitcode (";", "genPagedPointerSet"));
retype = getSpec (operandType (right));
letype = getSpec (operandType (result));
aop = newAsmop (0);
preg = getFreePtr (ic, &aop, FALSE);
emitcode ("mov", "%s,%s",
- preg->name,
- aopGet (AOP (result), 0, FALSE, TRUE));
+ preg->name,
+ aopGet (result, 0, FALSE, TRUE));
rname = preg->name;
}
else
- rname = aopGet (AOP (result), 0, FALSE, FALSE);
+ rname = aopGet (result, 0, FALSE, FALSE);
aopOp (right, ic, FALSE);
/* if bitfield then unpack the bits */
- if (IS_BITVAR (retype) || IS_BITVAR (letype))
- genPackBits ((IS_BITVAR (retype) ? retype : letype), right, rname, PPOINTER);
+ if (IS_BITFIELD (retype) || IS_BITFIELD (letype))
+ genPackBits ((IS_BITFIELD (retype) ? retype : letype), right, rname, PPOINTER);
else
{
/* we have can just get the values */
int offset = 0;
while (size--)
- {
- l = aopGet (AOP (right), offset, FALSE, TRUE);
-
- MOVA (l);
- emitcode ("movx", "@%s,a", rname);
+ {
+ l = aopGet (right, offset, FALSE, TRUE);
+ MOVA (l);
+ emitcode ("movx", "@%s,a", rname);
- if (size || pi)
- emitcode ("inc", "%s", rname);
+ if (size || pi)
+ emitcode ("inc", "%s", rname);
- offset++;
- }
+ offset++;
+ }
}
/* now some housekeeping stuff */
if (aop) /* we had to allocate for this iCode */
{
if (pi)
- aopPut (AOP (result), rname, 0, isOperandVolatile (result, FALSE));
+ aopPut (result, rname, 0);
freeAsmop (NULL, aop, ic, TRUE);
}
else
we have to point it back to where it
belongs */
if (AOP_SIZE (right) > 1 &&
- !OP_SYMBOL (result)->remat &&
- (OP_SYMBOL (result)->liveTo > ic->seq ||
- ic->depth))
- {
- int size = AOP_SIZE (right) - 1;
- while (size--)
- emitcode ("dec", "%s", rname);
- }
+ !OP_SYMBOL (result)->remat &&
+ (OP_SYMBOL (result)->liveTo > ic->seq ||
+ ic->depth))
+ {
+ int size = AOP_SIZE (right) - 1;
+ while (size--)
+ emitcode ("dec", "%s", rname);
+ }
}
/* done */
if (pi) pi->generated = 1;
freeAsmop (result, NULL, ic, TRUE);
freeAsmop (right, NULL, ic, TRUE);
-
-
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
static void
genFarPointerSet (operand * right,
- operand * result, iCode * ic, iCode * pi)
+ operand * result, iCode * ic, iCode * pi)
{
int size, offset;
sym_link *retype = getSpec (operandType (right));
D(emitcode ("; genFarPointerSet",""));
aopOp (result, ic, FALSE);
+ loadDptrFromOperand (result, FALSE);
- /* if the operand is already in dptr
- then we do nothing else we move the value to dptr */
- if (AOP_TYPE (result) != AOP_STR)
- {
- /* if this is remateriazable */
- if (AOP_TYPE (result) == AOP_IMMD)
- emitcode ("mov", "dptr,%s", aopGet (AOP (result), 0, TRUE, FALSE));
- else
- { /* we need to get it byte by byte */
- emitcode ("mov", "dpl,%s", aopGet (AOP (result), 0, FALSE, FALSE));
- emitcode ("mov", "dph,%s", aopGet (AOP (result), 1, FALSE, FALSE));
- }
- }
- /* so dptr know contains the address */
+ /* so dptr now contains the address */
aopOp (right, ic, FALSE);
/* if bit then unpack */
- if (IS_BITVAR (retype) || IS_BITVAR (letype))
- genPackBits ((IS_BITVAR (retype) ? retype : letype), right, "dptr", FPOINTER);
+ if (IS_BITFIELD (retype) || IS_BITFIELD (letype))
+ genPackBits ((IS_BITFIELD (retype) ? retype : letype), right, "dptr", FPOINTER);
else
{
size = AOP_SIZE (right);
offset = 0;
while (size--)
- {
- char *l = aopGet (AOP (right), offset++, FALSE, FALSE);
- MOVA (l);
- emitcode ("movx", "@dptr,a");
- if (size || pi)
- emitcode ("inc", "dptr");
- }
+ {
+ char *l = aopGet (right, offset++, FALSE, FALSE);
+ MOVA (l);
+ emitcode ("movx", "@dptr,a");
+ if (size || pi)
+ emitcode ("inc", "dptr");
+ }
}
if (pi && AOP_TYPE (result) != AOP_STR && AOP_TYPE (result) != AOP_IMMD) {
- aopPut (AOP(result), "dpl", 0, isOperandVolatile (result, FALSE));
- aopPut (AOP(result), "dph", 1, isOperandVolatile (result, FALSE));
+ aopPut (result, "dpl", 0);
+ aopPut (result, "dph", 1);
pi->generated=1;
}
freeAsmop (result, NULL, ic, TRUE);
/*-----------------------------------------------------------------*/
static void
genGenPointerSet (operand * right,
- operand * result, iCode * ic, iCode * pi)
+ operand * result, iCode * ic, iCode * pi)
{
int size, offset;
sym_link *retype = getSpec (operandType (right));
sym_link *letype = getSpec (operandType (result));
- D(emitcode ("; genGenPointerSet",""));
+ D (emitcode (";", "genGenPointerSet"));
aopOp (result, ic, FALSE);
+ loadDptrFromOperand (result, TRUE);
- /* if the operand is already in dptr
- then we do nothing else we move the value to dptr */
- if (AOP_TYPE (result) != AOP_STR)
- {
- /* if this is remateriazable */
- if (AOP_TYPE (result) == AOP_IMMD)
- {
- emitcode ("mov", "dptr,%s", aopGet (AOP (result), 0, TRUE, FALSE));
- if (AOP(result)->aopu.aop_immd.from_cast_remat)
- emitcode ("mov", "b,%s",aopGet(AOP (result), AOP_SIZE(result)-1, FALSE, FALSE));
- else
- emitcode ("mov", "b,%s + 1", aopGet (AOP (result), 0, TRUE, FALSE));
- }
- else
- { /* we need to get it byte by byte */
- emitcode ("mov", "dpl,%s", aopGet (AOP (result), 0, FALSE, FALSE));
- emitcode ("mov", "dph,%s", aopGet (AOP (result), 1, FALSE, FALSE));
- emitcode ("mov", "b,%s", aopGet (AOP (result), 2, FALSE, FALSE));
- }
- }
- /* so dptr know contains the address */
+ /* so dptr now contains the address */
aopOp (right, ic, FALSE);
/* if bit then unpack */
- if (IS_BITVAR (retype) || IS_BITVAR (letype))
- genPackBits ((IS_BITVAR (retype) ? retype : letype), right, "dptr", GPOINTER);
+ if (IS_BITFIELD (retype) || IS_BITFIELD (letype))
+ {
+ genPackBits ((IS_BITFIELD (retype) ? retype : letype), right, "dptr", GPOINTER);
+ }
else
{
size = AOP_SIZE (right);
offset = 0;
while (size--)
- {
- char *l = aopGet (AOP (right), offset++, FALSE, FALSE);
- MOVA (l);
- emitcode ("lcall", "__gptrput");
- if (size || pi)
- emitcode ("inc", "dptr");
- }
+ {
+ char *l = aopGet (right, offset++, FALSE, FALSE);
+ MOVA (l);
+ emitcode ("lcall", "__gptrput");
+ if (size || pi)
+ emitcode ("inc", "dptr");
+ }
}
if (pi && AOP_TYPE (result) != AOP_STR && AOP_TYPE (result) != AOP_IMMD) {
- aopPut (AOP(result), "dpl", 0, isOperandVolatile (result, FALSE));
- aopPut (AOP(result), "dph", 1, isOperandVolatile (result, FALSE));
+ aopPut (result, "dpl", 0);
+ aopPut (result, "dph", 1);
pi->generated=1;
}
freeAsmop (result, NULL, ic, TRUE);
sym_link *type, *etype;
int p_type;
- D(emitcode ("; genPointerSet",""));
+ D (emitcode (";", "genPointerSet"));
right = IC_RIGHT (ic);
result = IC_RESULT (ic);
/* special case when cast remat */
if (p_type == GPOINTER && OP_SYMBOL(result)->remat &&
IS_CAST_ICODE(OP_SYMBOL(result)->rematiCode)) {
- result = IC_RIGHT(OP_SYMBOL(result)->rematiCode);
- type = operandType (result);
- p_type = DCL_TYPE (type);
+ result = IC_RIGHT(OP_SYMBOL(result)->rematiCode);
+ type = operandType (result);
+ p_type = DCL_TYPE (type);
}
+
/* now that we have the pointer type we assign
the pointer values */
switch (p_type)
break;
default:
- werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "genPointerSet: illegal pointer type");
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "genPointerSet: illegal pointer type");
}
-
}
/*-----------------------------------------------------------------*/
{
operand *cond = IC_COND (ic);
int isbit = 0;
+ char *dup = NULL;
- D(emitcode ("; genIfx",""));
+ D (emitcode (";", "genIfx"));
aopOp (cond, ic, FALSE);
/* get the value into acc */
if (AOP_TYPE (cond) != AOP_CRY)
- toBoolean (cond);
+ {
+ toBoolean (cond);
+ }
else
- isbit = 1;
- /* the result is now in the accumulator */
+ {
+ isbit = 1;
+ if (AOP(cond)->aopu.aop_dir)
+ dup = Safe_strdup(AOP(cond)->aopu.aop_dir);
+ }
+
+ /* the result is now in the accumulator or a directly addressable bit */
freeAsmop (cond, NULL, ic, TRUE);
/* if there was something to be popped then do it */
if (popIc)
genIpop (popIc);
- /* if the condition is a bit variable */
- if (isbit && IS_ITEMP (cond) &&
- SPIL_LOC (cond))
- genIfxJump (ic, SPIL_LOC (cond)->rname);
+ /* if the condition is a bit variable */
+ if (isbit && dup)
+ genIfxJump(ic, dup, NULL, NULL, NULL);
+ else if (isbit && IS_ITEMP (cond) && SPIL_LOC (cond))
+ genIfxJump (ic, SPIL_LOC (cond)->rname, NULL, NULL, NULL);
else if (isbit && !IS_ITEMP (cond))
- genIfxJump (ic, OP_SYMBOL (cond)->rname);
+ genIfxJump (ic, OP_SYMBOL (cond)->rname, NULL, NULL, NULL);
else
- genIfxJump (ic, "a");
+ genIfxJump (ic, "a", NULL, NULL, NULL);
ic->generated = 1;
}
symbol *sym = OP_SYMBOL (IC_LEFT (ic));
int size, offset;
- D(emitcode ("; genAddrOf",""));
+ D (emitcode (";", "genAddrOf"));
aopOp (IC_RESULT (ic), ic, FALSE);
variable */
if (sym->onStack)
{
- /* if it has an offset then we need to compute
- it */
+ /* if it has an offset then we need to compute it */
if (sym->stack)
- {
- emitcode ("mov", "a,_bp");
- emitcode ("add", "a,#0x%02x", ((sym->stack < 0) ?
- ((char) (sym->stack - _G.nRegsSaved)) :
- ((char) sym->stack)) & 0xff);
- aopPut (AOP (IC_RESULT (ic)), "a", 0, isOperandVolatile (IC_RESULT (ic), FALSE));
- }
+ {
+ emitcode ("mov", "a,%s", SYM_BP (sym));
+ emitcode ("add", "a,#0x%02x", ((sym->stack < 0) ?
+ ((char) (sym->stack - _G.nRegsSaved)) :
+ ((char) sym->stack)) & 0xff);
+ aopPut (IC_RESULT (ic), "a", 0);
+ }
else
- {
- /* we can just move _bp */
- aopPut (AOP (IC_RESULT (ic)), "_bp", 0, isOperandVolatile (IC_RESULT (ic), FALSE));
- }
+ {
+ /* we can just move _bp */
+ aopPut (IC_RESULT (ic), SYM_BP (sym), 0);
+ }
/* fill the result with zero */
size = AOP_SIZE (IC_RESULT (ic)) - 1;
offset = 1;
while (size--)
- {
- aopPut (AOP (IC_RESULT (ic)), zero, offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
- }
-
+ {
+ aopPut (IC_RESULT (ic), zero, offset++);
+ }
goto release;
}
{
char s[SDCC_NAME_MAX];
if (offset)
- sprintf (s, "#(%s >> %d)",
- sym->rname,
- offset * 8);
+ sprintf (s, "#(%s >> %d)",
+ sym->rname,
+ offset * 8);
else
- sprintf (s, "#%s", sym->rname);
- aopPut (AOP (IC_RESULT (ic)), s, offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
+ SNPRINTF (s, sizeof(s), "#%s", sym->rname);
+ aopPut (IC_RESULT (ic), s, offset++);
}
release:
int offset = 0;
char *l;
- D(emitcode ("; genFarFarAssign",""));
+ D (emitcode (";", "genFarFarAssign"));
/* first push the right side on to the stack */
while (size--)
{
- l = aopGet (AOP (right), offset++, FALSE, FALSE);
+ l = aopGet (right, offset++, FALSE, FALSE);
MOVA (l);
emitcode ("push", "acc");
}
while (size--)
{
emitcode ("pop", "acc");
- aopPut (AOP (result), "a", --offset, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", --offset);
}
freeAsmop (result, NULL, ic, FALSE);
-
}
/*-----------------------------------------------------------------*/
int size, offset;
unsigned long lit = 0L;
- D(emitcode("; genAssign",""));
+ D (emitcode (";", "genAssign"));
result = IC_RESULT (ic);
right = IC_RIGHT (ic);
IS_TRUE_SYMOP (result) &&
isOperandInFarSpace (result))
{
-
genFarFarAssign (result, right, ic);
return;
}
/* if the result is a bit */
if (AOP_TYPE (result) == AOP_CRY)
{
-
/* if the right size is a literal then
we know what the value is */
if (AOP_TYPE (right) == AOP_LIT)
- {
- if (((int) operandLitValue (right)))
- aopPut (AOP (result), one, 0, isOperandVolatile (result, FALSE));
- else
- aopPut (AOP (result), zero, 0, isOperandVolatile (result, FALSE));
- goto release;
- }
+ {
+ if (((int) operandLitValue (right)))
+ aopPut (result, one, 0);
+ else
+ aopPut (result, zero, 0);
+ goto release;
+ }
/* the right is also a bit variable */
if (AOP_TYPE (right) == AOP_CRY)
- {
- emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
- aopPut (AOP (result), "c", 0, isOperandVolatile (result, FALSE));
- goto release;
- }
+ {
+ emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
+ aopPut (result, "c", 0);
+ goto release;
+ }
/* we need to or */
toBoolean (right);
- aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", 0);
goto release;
}
offset = 0;
if (AOP_TYPE (right) == AOP_LIT)
lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit);
+
if ((size > 1) &&
(AOP_TYPE (result) != AOP_REG) &&
(AOP_TYPE (right) == AOP_LIT) &&
!IS_FLOAT (operandType (right)) &&
(lit < 256L))
{
- emitcode ("clr", "a");
+ while ((size) && (lit))
+ {
+ aopPut (result,
+ aopGet (right, offset, FALSE, FALSE),
+ offset);
+ lit >>= 8;
+ offset++;
+ size--;
+ }
+ /* And now fill the rest with zeros. */
+ if (size)
+ {
+ emitcode ("clr", "a");
+ }
while (size--)
- {
- if ((unsigned int) ((lit >> (size * 8)) & 0x0FFL) == 0)
- aopPut (AOP (result), "a", size, isOperandVolatile (result, FALSE));
- else
- aopPut (AOP (result),
- aopGet (AOP (right), size, FALSE, FALSE),
- size,
- isOperandVolatile (result, FALSE));
- }
+ {
+ aopPut (result, "a", offset);
+ offset++;
+ }
}
else
{
while (size--)
- {
- aopPut (AOP (result),
- aopGet (AOP (right), offset, FALSE, FALSE),
- offset,
- isOperandVolatile (result, FALSE));
- offset++;
- }
+ {
+ aopPut (result,
+ aopGet (right, offset, FALSE, FALSE),
+ offset);
+ offset++;
+ }
}
release:
- freeAsmop (right, NULL, ic, TRUE);
freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (right, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
-/* genJumpTab - genrates code for jump table */
+/* genJumpTab - generates code for jump table */
/*-----------------------------------------------------------------*/
static void
genJumpTab (iCode * ic)
{
- symbol *jtab;
+ symbol *jtab,*jtablo,*jtabhi;
char *l;
+ unsigned int count;
- D(emitcode ("; genJumpTab",""));
+ D (emitcode (";", "genJumpTab"));
- aopOp (IC_JTCOND (ic), ic, FALSE);
- /* get the condition into accumulator */
- l = aopGet (AOP (IC_JTCOND (ic)), 0, FALSE, FALSE);
- MOVA (l);
- /* multiply by three */
- emitcode ("add", "a,acc");
- emitcode ("add", "a,%s", aopGet (AOP (IC_JTCOND (ic)), 0, FALSE, FALSE));
- freeAsmop (IC_JTCOND (ic), NULL, ic, TRUE);
+ count = elementsInSet( IC_JTLABELS (ic) );
+
+ if( count <= 16 )
+ {
+ /* this algorithm needs 9 cycles and 7 + 3*n bytes
+ if the switch argument is in a register.
+ (8 cycles and 6+2*n bytes if peepholes can change ljmp to sjmp) */
+ /* Peephole may not convert ljmp to sjmp or ret
+ labelIsReturnOnly & labelInRange must check
+ currPl->ic->op != JUMPTABLE */
+ aopOp (IC_JTCOND (ic), ic, FALSE);
+ /* get the condition into accumulator */
+ l = aopGet (IC_JTCOND (ic), 0, FALSE, FALSE);
+ MOVA (l);
+ /* multiply by three */
+ if (aopGetUsesAcc (IC_JTCOND (ic), 0))
+ {
+ emitcode ("mov", "b,#3");
+ emitcode ("mul", "ab");
+ }
+ else
+ {
+ emitcode ("add", "a,acc");
+ emitcode ("add", "a,%s", aopGet (IC_JTCOND (ic), 0, FALSE, FALSE));
+ }
+ freeAsmop (IC_JTCOND (ic), NULL, ic, TRUE);
+
+ jtab = newiTempLabel (NULL);
+ emitcode ("mov", "dptr,#%05d$", jtab->key + 100);
+ emitcode ("jmp", "@a+dptr");
+ emitLabel (jtab);
+ /* now generate the jump labels */
+ for (jtab = setFirstItem (IC_JTLABELS (ic)); jtab;
+ jtab = setNextItem (IC_JTLABELS (ic)))
+ emitcode ("ljmp", "%05d$", jtab->key + 100);
+ }
+ else
+ {
+ /* this algorithm needs 14 cycles and 13 + 2*n bytes
+ if the switch argument is in a register.
+ For n>6 this algorithm may be more compact */
+ jtablo = newiTempLabel (NULL);
+ jtabhi = newiTempLabel (NULL);
+
+ /* get the condition into accumulator.
+ Using b as temporary storage, if register push/pop is needed */
+ aopOp (IC_JTCOND (ic), ic, FALSE);
+ l = aopGet (IC_JTCOND (ic), 0, FALSE, FALSE);
+ if ((AOP_TYPE (IC_JTCOND (ic)) == AOP_R0 && _G.r0Pushed) ||
+ (AOP_TYPE (IC_JTCOND (ic)) == AOP_R1 && _G.r1Pushed))
+ {
+ // (MB) what if B is in use???
+ wassertl(!BINUSE, "B was in use");
+ emitcode ("mov", "b,%s", l);
+ l = "b";
+ }
+ freeAsmop (IC_JTCOND (ic), NULL, ic, TRUE);
+ MOVA (l);
+ if( count <= 112 )
+ {
+ emitcode ("add", "a,#(%05d$-3-.)", jtablo->key + 100);
+ emitcode ("movc", "a,@a+pc");
+ emitcode ("push", "acc");
+
+ MOVA (l);
+ emitcode ("add", "a,#(%05d$-3-.)", jtabhi->key + 100);
+ emitcode ("movc", "a,@a+pc");
+ emitcode ("push", "acc");
+ }
+ else
+ {
+ /* this scales up to n<=255, but needs two more bytes
+ and changes dptr */
+ emitcode ("mov", "dptr,#%05d$", jtablo->key + 100);
+ emitcode ("movc", "a,@a+dptr");
+ emitcode ("push", "acc");
- jtab = newiTempLabel (NULL);
- emitcode ("mov", "dptr,#%05d$", jtab->key + 100);
- emitcode ("jmp", "@a+dptr");
- emitcode ("", "%05d$:", jtab->key + 100);
- /* now generate the jump labels */
- for (jtab = setFirstItem (IC_JTLABELS (ic)); jtab;
- jtab = setNextItem (IC_JTLABELS (ic)))
- emitcode ("ljmp", "%05d$", jtab->key + 100);
+ MOVA (l);
+ emitcode ("mov", "dptr,#%05d$", jtabhi->key + 100);
+ emitcode ("movc", "a,@a+dptr");
+ emitcode ("push", "acc");
+ }
+
+ emitcode ("ret", "");
+ /* now generate jump table, LSB */
+ emitLabel (jtablo);
+ for (jtab = setFirstItem (IC_JTLABELS (ic)); jtab;
+ jtab = setNextItem (IC_JTLABELS (ic)))
+ emitcode (".db", "%05d$", jtab->key + 100);
+
+ /* now generate jump table, MSB */
+ emitLabel (jtabhi);
+ for (jtab = setFirstItem (IC_JTLABELS (ic)); jtab;
+ jtab = setNextItem (IC_JTLABELS (ic)))
+ emitcode (".db", "%05d$>>8", jtab->key + 100);
+ }
}
/*-----------------------------------------------------------------*/
operand *right = IC_RIGHT (ic);
int size, offset;
- D(emitcode("; genCast",""));
+ D (emitcode (";", "genCast"));
/* if they are equivalent then do nothing */
if (operandsEqu (IC_RESULT (ic), IC_RIGHT (ic)))
aopOp (result, ic, FALSE);
/* if the result is a bit (and not a bitfield) */
- // if (AOP_TYPE (result) == AOP_CRY)
- if (IS_BITVAR (OP_SYMBOL (result)->type)
- && !IS_BITFIELD (OP_SYMBOL (result)->type) )
+ if (IS_BIT (OP_SYMBOL (result)->type))
{
/* if the right size is a literal then
we know what the value is */
if (AOP_TYPE (right) == AOP_LIT)
- {
- if (((int) operandLitValue (right)))
- aopPut (AOP (result), one, 0, isOperandVolatile (result, FALSE));
- else
- aopPut (AOP (result), zero, 0, isOperandVolatile (result, FALSE));
+ {
+ if (((int) operandLitValue (right)))
+ aopPut (result, one, 0);
+ else
+ aopPut (result, zero, 0);
- goto release;
- }
+ goto release;
+ }
/* the right is also a bit variable */
if (AOP_TYPE (right) == AOP_CRY)
- {
- emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
- aopPut (AOP (result), "c", 0, isOperandVolatile (result, FALSE));
- goto release;
- }
+ {
+ emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
+ aopPut (result, "c", 0);
+ goto release;
+ }
/* we need to or */
toBoolean (right);
- aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", 0);
goto release;
}
-
/* if they are the same size : or less */
if (AOP_SIZE (result) <= AOP_SIZE (right))
{
/* if they are in the same place */
if (sameRegs (AOP (right), AOP (result)))
- goto release;
+ goto release;
/* if they in different places then copy */
size = AOP_SIZE (result);
offset = 0;
while (size--)
- {
- aopPut (AOP (result),
- aopGet (AOP (right), offset, FALSE, FALSE),
- offset,
- isOperandVolatile (result, FALSE));
- offset++;
- }
+ {
+ aopPut (result,
+ aopGet (right, offset, FALSE, FALSE),
+ offset);
+ offset++;
+ }
goto release;
}
-
/* if the result is of type pointer */
if (IS_PTR (ctype))
{
/* pointer to generic pointer */
if (IS_GENPTR (ctype))
- {
- if (IS_PTR (type))
- p_type = DCL_TYPE (type);
- else
- {
- if (SPEC_SCLS(etype)==S_REGISTER) {
- // let's assume it is a generic pointer
- p_type=GPOINTER;
- } else {
- /* we have to go by the storage class */
- p_type = PTR_TYPE (SPEC_OCLS (etype));
- }
- }
-
- /* the first two bytes are known */
- size = GPTRSIZE - 1;
- offset = 0;
- while (size--)
- {
- aopPut (AOP (result),
- aopGet (AOP (right), offset, FALSE, FALSE),
- offset,
- isOperandVolatile (result, FALSE));
- offset++;
- }
- /* the last byte depending on type */
- {
- int gpVal = pointerTypeToGPByte(p_type, NULL, NULL);
- char gpValStr[10];
-
- if (gpVal == -1)
- {
- // pointerTypeToGPByte will have bitched.
- exit(1);
- }
-
- sprintf(gpValStr, "#0x%d", gpVal);
- aopPut (AOP (result), gpValStr, GPTRSIZE - 1, isOperandVolatile (result, FALSE));
- }
- goto release;
- }
+ {
+ if (IS_PTR (type))
+ {
+ p_type = DCL_TYPE (type);
+ }
+ else
+ {
+ if (SPEC_SCLS(etype)==S_REGISTER) {
+ // let's assume it is a generic pointer
+ p_type=GPOINTER;
+ } else {
+ /* we have to go by the storage class */
+ p_type = PTR_TYPE (SPEC_OCLS (etype));
+ }
+ }
+
+ /* the first two bytes are known */
+ size = GPTRSIZE - 1;
+ offset = 0;
+ while (size--)
+ {
+ aopPut (result,
+ aopGet (right, offset, FALSE, FALSE),
+ offset);
+ offset++;
+ }
+ /* the last byte depending on type */
+ {
+ int gpVal = pointerTypeToGPByte(p_type, NULL, NULL);
+ char gpValStr[10];
+
+ if (gpVal == -1)
+ {
+ // pointerTypeToGPByte will have bitched.
+ exit(1);
+ }
+
+ sprintf(gpValStr, "#0x%x", gpVal);
+ aopPut (result, gpValStr, GPTRSIZE - 1);
+ }
+ goto release;
+ }
/* just copy the pointers */
size = AOP_SIZE (result);
offset = 0;
while (size--)
- {
- aopPut (AOP (result),
- aopGet (AOP (right), offset, FALSE, FALSE),
- offset,
- isOperandVolatile (result, FALSE));
- offset++;
- }
+ {
+ aopPut (result,
+ aopGet (right, offset, FALSE, FALSE),
+ offset);
+ offset++;
+ }
goto release;
}
offset = 0;
while (size--)
{
- aopPut (AOP (result),
- aopGet (AOP (right), offset, FALSE, FALSE),
- offset,
- isOperandVolatile (result, FALSE));
+ aopPut (result,
+ aopGet (right, offset, FALSE, FALSE),
+ offset);
offset++;
}
if (!IS_SPEC (rtype) || SPEC_USIGN (rtype) || AOP_TYPE(right)==AOP_CRY)
{
while (size--)
- aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE));
+ aopPut (result, zero, offset++);
}
else
{
/* we need to extend the sign :{ */
- char *l = aopGet (AOP (right), AOP_SIZE (right) - 1,
- FALSE, FALSE);
+ char *l = aopGet (right, AOP_SIZE (right) - 1,
+ FALSE, FALSE);
MOVA (l);
emitcode ("rlc", "a");
emitcode ("subb", "a,acc");
while (size--)
- aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
+ aopPut (result, "a", offset++);
}
/* we are done hurray !!!! */
release:
- freeAsmop (right, NULL, ic, TRUE);
freeAsmop (result, NULL, ic, TRUE);
-
+ freeAsmop (right, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
if (!ifx)
return 0;
- D(emitcode ("; genDjnz",""));
-
/* if the if condition has a false label
then we cannot save */
if (IC_FALSE (ifx))
return 0;
- /* if the minus is not of the form
- a = a - 1 */
+ /* if the minus is not of the form a = a - 1 */
if (!isOperandEqual (IC_RESULT (ic), IC_LEFT (ic)) ||
!IS_OP_LITERAL (IC_RIGHT (ic)))
return 0;
return 0;
/* otherwise we can save BIG */
+
+ D (emitcode (";", "genDjnz"));
+
lbl = newiTempLabel (NULL);
lbl1 = newiTempLabel (NULL);
* the accumulator, we must explicitly write
* it back after the decrement.
*/
- char *rByte = aopGet(AOP(IC_RESULT(ic)), 0, FALSE, FALSE);
-
+ char *rByte = aopGet (IC_RESULT(ic), 0, FALSE, FALSE);
+
if (strcmp(rByte, "a"))
{
/* Something is hopelessly wrong */
fprintf(stderr, "*** warning: internal error at %s:%d\n",
- __FILE__, __LINE__);
+ __FILE__, __LINE__);
/* We can just give up; the generated code will be inefficient,
* but what the hey.
*/
return 0;
}
emitcode ("dec", "%s", rByte);
- aopPut(AOP(IC_RESULT(ic)), rByte, 0, isOperandVolatile (IC_RESULT (ic), FALSE));
+ aopPut (IC_RESULT (ic), rByte, 0);
emitcode ("jnz", "%05d$", lbl->key + 100);
}
else if (IS_AOP_PREG (IC_RESULT (ic)))
{
emitcode ("dec", "%s",
- aopGet (AOP (IC_RESULT (ic)), 0, FALSE, FALSE));
- emitcode ("mov", "a,%s", aopGet (AOP (IC_RESULT (ic)), 0, FALSE, FALSE));
+ aopGet (IC_RESULT (ic), 0, FALSE, FALSE));
+ MOVA (aopGet (IC_RESULT (ic), 0, FALSE, FALSE));
+ freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ ifx->generated = 1;
emitcode ("jnz", "%05d$", lbl->key + 100);
}
else
{
- emitcode ("djnz", "%s,%05d$", aopGet (AOP (IC_RESULT (ic)), 0, FALSE, FALSE),
- lbl->key + 100);
+ emitcode ("djnz", "%s,%05d$", aopGet (IC_RESULT (ic), 0, FALSE, FALSE),
+ lbl->key + 100);
}
emitcode ("sjmp", "%05d$", lbl1->key + 100);
- emitcode ("", "%05d$:", lbl->key + 100);
+ emitLabel (lbl);
emitcode ("ljmp", "%05d$", IC_TRUE (ifx)->key + 100);
- emitcode ("", "%05d$:", lbl1->key + 100);
+ emitLabel (lbl1);
- freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ if (!ifx->generated)
+ freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
ifx->generated = 1;
return 1;
}
static void
genReceive (iCode * ic)
{
- int size = getSize (operandType (IC_RESULT (ic)));
- int offset = 0;
- D(emitcode ("; genReceive",""));
-
- if (ic->argreg == 1) { /* first parameter */
- if (isOperandInFarSpace (IC_RESULT (ic)) &&
- (OP_SYMBOL (IC_RESULT (ic))->isspilt ||
- IS_TRUE_SYMOP (IC_RESULT (ic)))) {
-
- offset = fReturnSizeMCS51 - size;
- while (size--) {
- emitcode ("push", "%s", (strcmp (fReturn[fReturnSizeMCS51 - offset - 1], "a") ?
- fReturn[fReturnSizeMCS51 - offset - 1] : "acc"));
- offset++;
- }
- aopOp (IC_RESULT (ic), ic, FALSE);
- size = AOP_SIZE (IC_RESULT (ic));
- offset = 0;
- while (size--) {
- emitcode ("pop", "acc");
- aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
- }
-
- } else {
- _G.accInUse++;
- aopOp (IC_RESULT (ic), ic, FALSE);
- _G.accInUse--;
- assignResultValue (IC_RESULT (ic));
- }
- } else { /* second receive onwards */
+ int size = getSize (operandType (IC_RESULT (ic)));
+ int offset = 0;
+
+ D (emitcode (";", "genReceive"));
+
+ if (ic->argreg == 1)
+ { /* first parameter */
+ if ((isOperandInFarSpace (IC_RESULT (ic)) ||
+ isOperandInPagedSpace (IC_RESULT (ic))) &&
+ (OP_SYMBOL (IC_RESULT (ic))->isspilt ||
+ IS_TRUE_SYMOP (IC_RESULT (ic))))
+ {
+ regs *tempRegs[4];
+ int receivingA = 0;
+ int roffset = 0;
+
+ for (offset = 0; offset<size; offset++)
+ if (!strcmp (fReturn[offset], "a"))
+ receivingA = 1;
+
+ if (!receivingA)
+ {
+ if (size==1 || getTempRegs(tempRegs, size-1, ic))
+ {
+ for (offset = size-1; offset>0; offset--)
+ emitcode("mov","%s,%s", tempRegs[roffset++]->name, fReturn[offset]);
+ emitcode("mov","a,%s", fReturn[0]);
+ _G.accInUse++;
+ aopOp (IC_RESULT (ic), ic, FALSE);
+ _G.accInUse--;
+ aopPut (IC_RESULT (ic), "a", offset);
+ for (offset = 1; offset<size; offset++)
+ aopPut (IC_RESULT (ic), tempRegs[--roffset]->name, offset);
+ goto release;
+ }
+ }
+ else
+ {
+ if (getTempRegs(tempRegs, size, ic))
+ {
+ for (offset = 0; offset<size; offset++)
+ emitcode("mov","%s,%s", tempRegs[offset]->name, fReturn[offset]);
+ aopOp (IC_RESULT (ic), ic, FALSE);
+ for (offset = 0; offset<size; offset++)
+ aopPut (IC_RESULT (ic), tempRegs[offset]->name, offset);
+ goto release;
+ }
+ }
+
+ offset = fReturnSizeMCS51 - size;
+ while (size--)
+ {
+ emitcode ("push", "%s", (strcmp (fReturn[fReturnSizeMCS51 - offset - 1], "a") ?
+ fReturn[fReturnSizeMCS51 - offset - 1] : "acc"));
+ offset++;
+ }
+ aopOp (IC_RESULT (ic), ic, FALSE);
+ size = AOP_SIZE (IC_RESULT (ic));
+ offset = 0;
+ while (size--)
+ {
+ emitcode ("pop", "acc");
+ aopPut (IC_RESULT (ic), "a", offset++);
+ }
+ }
+ else
+ {
+ _G.accInUse++;
+ aopOp (IC_RESULT (ic), ic, FALSE);
+ _G.accInUse--;
+ assignResultValue (IC_RESULT (ic), NULL);
+ }
+ }
+ else if (ic->argreg > 12)
+ { /* bit parameters */
+ if (OP_SYMBOL (IC_RESULT (ic))->regs[0]->rIdx != ic->argreg-5)
+ {
+ aopOp (IC_RESULT (ic), ic, FALSE);
+ emitcode ("mov", "c,%s", rb1regs[ic->argreg-5]);
+ outBitC(IC_RESULT (ic));
+ }
+ }
+ else
+ { /* other parameters */
int rb1off ;
aopOp (IC_RESULT (ic), ic, FALSE);
rb1off = ic->argreg;
- while (size--) {
- aopPut (AOP (IC_RESULT (ic)), rb1regs[rb1off++ -5], offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
- }
- }
+ while (size--)
+ {
+ aopPut (IC_RESULT (ic), rb1regs[rb1off++ -5], offset++);
+ }
+ }
+
+release:
freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
}
static void
genDummyRead (iCode * ic)
{
- operand *right;
+ operand *op;
int size, offset;
- D(emitcode("; genDummyRead",""));
+ D (emitcode(";", "genDummyRead"));
- right = IC_RIGHT (ic);
+ op = IC_RIGHT (ic);
+ if (op && IS_SYMOP (op))
+ {
+ aopOp (op, ic, FALSE);
- aopOp (right, ic, FALSE);
+ /* if the result is a bit */
+ if (AOP_TYPE (op) == AOP_CRY)
+ emitcode ("mov", "c,%s", AOP (op)->aopu.aop_dir);
+ else
+ {
+ /* bit variables done */
+ /* general case */
+ size = AOP_SIZE (op);
+ offset = 0;
+ while (size--)
+ {
+ MOVA (aopGet (op, offset, FALSE, FALSE));
+ offset++;
+ }
+ }
- /* if the result is a bit */
- if (AOP_TYPE (right) == AOP_CRY)
+ freeAsmop (op, NULL, ic, TRUE);
+ }
+
+ op = IC_LEFT (ic);
+ if (op && IS_SYMOP (op))
{
- emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
- goto release;
+ aopOp (op, ic, FALSE);
+
+ /* if the result is a bit */
+ if (AOP_TYPE (op) == AOP_CRY)
+ emitcode ("mov", "c,%s", AOP (op)->aopu.aop_dir);
+ else
+ {
+ /* bit variables done */
+ /* general case */
+ size = AOP_SIZE (op);
+ offset = 0;
+ while (size--)
+ {
+ MOVA (aopGet (op, offset, FALSE, FALSE));
+ offset++;
+ }
+ }
+
+ freeAsmop (op, NULL, ic, TRUE);
}
+}
- /* bit variables done */
- /* general case */
- size = AOP_SIZE (right);
- offset = 0;
- while (size--)
+/*-----------------------------------------------------------------*/
+/* genCritical - generate code for start of a critical sequence */
+/*-----------------------------------------------------------------*/
+static void
+genCritical (iCode *ic)
+{
+ symbol *tlbl = newiTempLabel (NULL);
+
+ D (emitcode(";", "genCritical"));
+
+ if (IC_RESULT (ic))
{
- emitcode ("mov", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE));
- offset++;
+ aopOp (IC_RESULT (ic), ic, TRUE);
+ aopPut (IC_RESULT (ic), one, 0); /* save old ea in an operand */
+ emitcode ("jbc", "ea,%05d$", (tlbl->key + 100)); /* atomic test & clear */
+ aopPut (IC_RESULT (ic), zero, 0);
+ emitLabel (tlbl);
+ freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ }
+ else
+ {
+ emitcode ("setb", "c");
+ emitcode ("jbc", "ea,%05d$", (tlbl->key + 100)); /* atomic test & clear */
+ emitcode ("clr", "c");
+ emitLabel (tlbl);
+ emitcode ("push", "psw"); /* save old ea via c in psw on top of stack*/
}
+}
-release:
- freeAsmop (right, NULL, ic, TRUE);
+/*-----------------------------------------------------------------*/
+/* genEndCritical - generate code for end of a critical sequence */
+/*-----------------------------------------------------------------*/
+static void
+genEndCritical (iCode *ic)
+{
+ D(emitcode("; genEndCritical",""));
+
+ if (IC_RIGHT (ic))
+ {
+ aopOp (IC_RIGHT (ic), ic, FALSE);
+ if (AOP_TYPE (IC_RIGHT (ic)) == AOP_CRY)
+ {
+ emitcode ("mov", "c,%s", IC_RIGHT (ic)->aop->aopu.aop_dir);
+ emitcode ("mov", "ea,c");
+ }
+ else
+ {
+ if (AOP_TYPE (IC_RIGHT (ic)) != AOP_DUMMY)
+ MOVA (aopGet (IC_RIGHT (ic), 0, FALSE, FALSE));
+ emitcode ("rrc", "a");
+ emitcode ("mov", "ea,c");
+ }
+ freeAsmop (IC_RIGHT (ic), NULL, ic, TRUE);
+ }
+ else
+ {
+ emitcode ("pop", "psw"); /* restore ea via c in psw on top of stack */
+ emitcode ("mov", "ea,c");
+ }
}
/*-----------------------------------------------------------------*/
{
iCode *ic;
int cln = 0;
+ /* int cseq = 0; */
+ _G.currentFunc = NULL;
lineHead = lineCurr = NULL;
/* print the allocation information */
/* if debug information required */
if (options.debug && currFunc)
{
- debugFile->writeFunction(currFunc);
- _G.debugLine = 1;
- if (IS_STATIC (currFunc->etype))
- emitcode ("", "F%s$%s$0$0 ==.", moduleName, currFunc->name);
- else
- emitcode ("", "G$%s$0$0 ==.", currFunc->name);
- _G.debugLine = 0;
+ debugFile->writeFunction (currFunc, lic);
}
/* stack pointer name */
if (options.useXstack)
for (ic = lic; ic; ic = ic->next)
{
_G.current_iCode = ic;
-
+
if (ic->lineno && cln != ic->lineno)
- {
- if (options.debug)
- {
- _G.debugLine = 1;
- emitcode ("", "C$%s$%d$%d$%d ==.",
- FileBaseName (ic->filename), ic->lineno,
- ic->level, ic->block);
- _G.debugLine = 0;
- }
- if (!options.noCcodeInAsm) {
- emitcode ("", ";%s:%d: %s", ic->filename, ic->lineno,
- printCLine(ic->filename, ic->lineno));
- }
- cln = ic->lineno;
- }
+ {
+ if (options.debug)
+ {
+ debugFile->writeCLine (ic);
+ }
+ if (!options.noCcodeInAsm) {
+ emitcode ("", ";\t%s:%d: %s", ic->filename, ic->lineno,
+ printCLine(ic->filename, ic->lineno));
+ }
+ cln = ic->lineno;
+ }
+ #if 0
+ if (ic->seqPoint && ic->seqPoint != cseq)
+ {
+ emitcode ("", "; sequence point %d", ic->seqPoint);
+ cseq = ic->seqPoint;
+ }
+ #endif
if (options.iCodeInAsm) {
- char regsInUse[80];
- int i;
-
- for (i=0; i<8; i++) {
- sprintf (®sInUse[i],
- "%c", ic->riu & (1<<i) ? i+'0' : '-');
- }
- regsInUse[i]=0;
- emitcode("", "; [%s] ic:%d: %s", regsInUse, ic->seq, printILine(ic));
+ char regsInUse[80];
+ int i;
+
+ #if 0
+ for (i=0; i<8; i++) {
+ sprintf (®sInUse[i],
+ "%c", ic->riu & (1<<i) ? i+'0' : '-'); /* show riu */
+ regsInUse[i]=0;
+ #else
+ strcpy (regsInUse, "--------");
+ for (i=0; i < 8; i++) {
+ if (bitVectBitValue (ic->rMask, i))
+ {
+ int offset = regs8051[i].offset;
+ regsInUse[offset] = offset + '0'; /* show rMask */
+ }
+ #endif
+ }
+ emitcode("", "; [%s] ic:%d: %s", regsInUse, ic->seq, printILine(ic));
}
/* if the result is marked as
spilt and rematerializable or code for
this has already been generated then
do nothing */
if (resultRemat (ic) || ic->generated)
- continue;
+ continue;
/* depending on the operation */
switch (ic->op)
- {
- case '!':
- genNot (ic);
- break;
-
- case '~':
- genCpl (ic);
- break;
-
- case UNARYMINUS:
- genUminus (ic);
- break;
-
- case IPUSH:
- genIpush (ic);
- break;
-
- case IPOP:
- /* IPOP happens only when trying to restore a
- spilt live range, if there is an ifx statement
- following this pop then the if statement might
- be using some of the registers being popped which
- would destory the contents of the register so
- we need to check for this condition and handle it */
- if (ic->next &&
- ic->next->op == IFX &&
- regsInCommon (IC_LEFT (ic), IC_COND (ic->next)))
- genIfx (ic->next, ic);
- else
- genIpop (ic);
- break;
-
- case CALL:
- genCall (ic);
- break;
-
- case PCALL:
- genPcall (ic);
- break;
-
- case FUNCTION:
- genFunction (ic);
- break;
-
- case ENDFUNCTION:
- genEndFunction (ic);
- break;
-
- case RETURN:
- genRet (ic);
- break;
-
- case LABEL:
- genLabel (ic);
- break;
-
- case GOTO:
- genGoto (ic);
- break;
-
- case '+':
- genPlus (ic);
- break;
-
- case '-':
- if (!genDjnz (ic, ifxForOp (IC_RESULT (ic), ic)))
- genMinus (ic);
- break;
-
- case '*':
- genMult (ic);
- break;
-
- case '/':
- genDiv (ic);
- break;
-
- case '%':
- genMod (ic);
- break;
-
- case '>':
- genCmpGt (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case '<':
- genCmpLt (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case LE_OP:
- case GE_OP:
- case NE_OP:
-
- /* note these two are xlated by algebraic equivalence
- during parsing SDCC.y */
- werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "got '>=' or '<=' shouldn't have come here");
- break;
-
- case EQ_OP:
- genCmpEq (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case AND_OP:
- genAndOp (ic);
- break;
-
- case OR_OP:
- genOrOp (ic);
- break;
-
- case '^':
- genXor (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case '|':
- genOr (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case BITWISEAND:
- genAnd (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case INLINEASM:
- genInline (ic);
- break;
-
- case RRC:
- genRRC (ic);
- break;
-
- case RLC:
- genRLC (ic);
- break;
-
- case GETHBIT:
- genGetHbit (ic);
- break;
-
- case LEFT_OP:
- genLeftShift (ic);
- break;
-
- case RIGHT_OP:
- genRightShift (ic);
- break;
-
- case GET_VALUE_AT_ADDRESS:
- genPointerGet (ic, hasInc(IC_LEFT(ic),ic,getSize(operandType(IC_RESULT(ic)))));
- break;
-
- case '=':
- if (POINTER_SET (ic))
- genPointerSet (ic, hasInc (IC_RESULT(ic),ic,getSize(operandType(IC_RIGHT(ic)))));
- else
- genAssign (ic);
- break;
-
- case IFX:
- genIfx (ic, NULL);
- break;
-
- case ADDRESS_OF:
- genAddrOf (ic);
- break;
-
- case JUMPTABLE:
- genJumpTab (ic);
- break;
-
- case CAST:
- genCast (ic);
- break;
-
- case RECEIVE:
- genReceive (ic);
- break;
-
- case SEND:
- addSet (&_G.sendSet, ic);
- break;
-
- case DUMMY_READ_VOLATILE:
- genDummyRead (ic);
- break;
-
- default:
- ic = ic;
- }
+ {
+ case '!':
+ genNot (ic);
+ break;
+
+ case '~':
+ genCpl (ic);
+ break;
+
+ case UNARYMINUS:
+ genUminus (ic);
+ break;
+
+ case IPUSH:
+ genIpush (ic);
+ break;
+
+ case IPOP:
+ /* IPOP happens only when trying to restore a
+ spilt live range, if there is an ifx statement
+ following this pop then the if statement might
+ be using some of the registers being popped which
+ would destory the contents of the register so
+ we need to check for this condition and handle it */
+ if (ic->next &&
+ ic->next->op == IFX &&
+ regsInCommon (IC_LEFT (ic), IC_COND (ic->next)))
+ genIfx (ic->next, ic);
+ else
+ genIpop (ic);
+ break;
+
+ case CALL:
+ genCall (ic);
+ break;
+
+ case PCALL:
+ genPcall (ic);
+ break;
+
+ case FUNCTION:
+ genFunction (ic);
+ break;
+
+ case ENDFUNCTION:
+ genEndFunction (ic);
+ break;
+
+ case RETURN:
+ genRet (ic);
+ break;
+
+ case LABEL:
+ genLabel (ic);
+ break;
+
+ case GOTO:
+ genGoto (ic);
+ break;
+
+ case '+':
+ genPlus (ic);
+ break;
+
+ case '-':
+ if (!genDjnz (ic, ifxForOp (IC_RESULT (ic), ic)))
+ genMinus (ic);
+ break;
+
+ case '*':
+ genMult (ic);
+ break;
+
+ case '/':
+ genDiv (ic);
+ break;
+
+ case '%':
+ genMod (ic);
+ break;
+
+ case '>':
+ genCmpGt (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case '<':
+ genCmpLt (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case LE_OP:
+ case GE_OP:
+ case NE_OP:
+
+ /* note these two are xlated by algebraic equivalence
+ in decorateType() in SDCCast.c */
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "got '>=' or '<=' shouldn't have come here");
+ break;
+
+ case EQ_OP:
+ genCmpEq (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case AND_OP:
+ genAndOp (ic);
+ break;
+
+ case OR_OP:
+ genOrOp (ic);
+ break;
+
+ case '^':
+ genXor (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case '|':
+ genOr (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case BITWISEAND:
+ genAnd (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case INLINEASM:
+ genInline (ic);
+ break;
+
+ case RRC:
+ genRRC (ic);
+ break;
+
+ case RLC:
+ genRLC (ic);
+ break;
+
+ case GETHBIT:
+ genGetHbit (ic);
+ break;
+
+ case GETABIT:
+ genGetAbit (ic);
+ break;
+
+ case GETBYTE:
+ genGetByte (ic);
+ break;
+
+ case GETWORD:
+ genGetWord (ic);
+ break;
+
+ case LEFT_OP:
+ genLeftShift (ic);
+ break;
+
+ case RIGHT_OP:
+ genRightShift (ic);
+ break;
+
+ case GET_VALUE_AT_ADDRESS:
+ genPointerGet (ic,
+ hasInc (IC_LEFT (ic), ic,
+ getSize (operandType (IC_RESULT (ic)))),
+ ifxForOp (IC_RESULT (ic), ic) );
+ break;
+
+ case '=':
+ if (POINTER_SET (ic))
+ genPointerSet (ic,
+ hasInc (IC_RESULT (ic), ic,
+ getSize (operandType (IC_RIGHT (ic)))));
+ else
+ genAssign (ic);
+ break;
+
+ case IFX:
+ genIfx (ic, NULL);
+ break;
+
+ case ADDRESS_OF:
+ genAddrOf (ic);
+ break;
+
+ case JUMPTABLE:
+ genJumpTab (ic);
+ break;
+
+ case CAST:
+ genCast (ic);
+ break;
+
+ case RECEIVE:
+ genReceive (ic);
+ break;
+
+ case SEND:
+ addSet (&_G.sendSet, ic);
+ break;
+
+ case DUMMY_READ_VOLATILE:
+ genDummyRead (ic);
+ break;
+
+ case CRITICAL:
+ genCritical (ic);
+ break;
+
+ case ENDCRITICAL:
+ genEndCritical (ic);
+ break;
+
+ case SWAP:
+ genSwap (ic);
+ break;
+
+ default:
+ ic = ic;
+ }
}
_G.current_iCode = NULL;
projects / fw / sdcc / blobdiff