Made everything static
-------------------------------------------------------------------------*/
-#define D(x)
-//#define D(x) x
+//#define D(x)
+#define D(x) x
#include <stdio.h>
#include <stdlib.h>
#include "SDCCglobl.h"
#include "newalloc.h"
-#ifdef HAVE_SYS_ISA_DEFS_H
-#include <sys/isa_defs.h>
-#else
-#ifdef HAVE_ENDIAN_H
-#include <endian.h>
-#else
-#if !defined(__BORLANDC__) && !defined(_MSC_VER) && !defined(__MINGW32__) && !defined(__CYGWIN__)
-#warning "Cannot determine ENDIANESS of this machine assuming LITTLE_ENDIAN"
-#warning "If you running sdcc on an INTEL 80x86 Platform you are okay"
-#endif
-#endif
-#endif
-
#include "common.h"
#include "SDCCpeeph.h"
#include "ralloc.h"
static char *accUse[] =
{"a", "b"};
-static short rbank = -1;
+static unsigned short rbank = -1;
static struct
{
short debugLine;
short nRegsSaved;
set *sendSet;
+ iCode *current_iCode;
}
_G;
+static char *rb1regs[] = {
+ "b1_0","b1_1","b1_2","b1_3","b1_4","b1_5","b1_6","b1_7"
+};
+
extern int mcs51_ptrRegReq;
extern int mcs51_nRegs;
extern FILE *codeOutFile;
(IC_RESULT(x) && IC_RESULT(x)->aop && \
IC_RESULT(x)->aop->type == AOP_STK )
-#define MOVA(x) if (strcmp(x,"a") && strcmp(x,"acc")) emitcode("mov","a,%s",x);
+#define MOVA(x) mova(x) /* use function to avoid multiple eval */
#define CLRC emitcode("clr","c")
#define SETC emitcode("setb","c")
/* emitcode - writes the code into a file : for now it is simple */
/*-----------------------------------------------------------------*/
static void
-emitcode (char *inst, char *fmt,...)
+emitcode (char *inst, const char *fmt,...)
{
va_list ap;
char lb[INITIAL_INLINEASM];
(lineHead = newLineNode (lb)));
lineCurr->isInline = _G.inLine;
lineCurr->isDebug = _G.debugLine;
+ lineCurr->ic = _G.current_iCode;
+ lineCurr->isComment = (*lbp==';');
va_end (ap);
}
+/*-----------------------------------------------------------------*/
+/* mova - moves specified value into accumulator */
+/*-----------------------------------------------------------------*/
+static void
+mova (const char *x)
+{
+ /* do some early peephole optimization */
+ if (!strcmp(x, "a") || !strcmp(x, "acc"))
+ return;
+
+ emitcode("mov","a,%s", x);
+}
+
/*-----------------------------------------------------------------*/
/* getFreePtr - returns r0 or r1 whichever is free or can be pushed */
/*-----------------------------------------------------------------*/
(*aopp)->type = AOP_R1;
return mcs51_regWithIdx (R1_IDX);
}
-
endOfWorld:
- /* I said end of world but not quite end of world yet */
- /* if this is a result then we can push it on the stack */
- if (result)
- {
- (*aopp)->type = AOP_STK;
- return NULL;
+ /* 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)) {
+ (*aopp)->type = AOP_R0;
+ return mcs51_regWithIdx (R0_IDX);
+ }
+ if (bitVectBitValue (mcs51_rUmaskForOp(IC_RESULT(ic)), R1_IDX)) {
+ (*aopp)->type = AOP_R1;
+ return mcs51_regWithIdx (R1_IDX);
}
+ }
- /* other wise this is true end of the world */
+ /* now this is REALLY the end of the world */
werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
"getFreePtr should never reach here");
exit (1);
}
+
+/*-----------------------------------------------------------------*/
+/* 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)
+ {
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "null iCode pointer");
+ return 0;
+ }
+
+ 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;
+ }
+ }
+
+ if (accuseSize)
+ return accuseSize;
+ else
+ return accuse;
+}
+
+
/*-----------------------------------------------------------------*/
/* aopForSym - for a true symbol */
/*-----------------------------------------------------------------*/
if (sym->onStack)
{
- if (_G.accInUse)
+ if (_G.accInUse || leftRightUseAcc (ic))
emitcode ("push", "acc");
emitcode ("mov", "a,_bp");
emitcode ("mov", "%s,a",
aop->aopu.aop_ptr->name);
- if (_G.accInUse)
+ if (_G.accInUse || leftRightUseAcc (ic))
emitcode ("pop", "acc");
}
else
/* 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 = Safe_calloc (1, strlen (sym->rname) + 1);
- strcpy (aop->aopu.aop_immd, sym->rname);
+ 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;
return aop;
}
{
iCode *ic = sym->rematiCode;
asmop *aop = newAsmop (AOP_IMMD);
+ int ptr_type=0;
int val = 0;
for (;;)
val += (int) operandLitValue (IC_RIGHT (ic));
else if (ic->op == '-')
val -= (int) operandLitValue (IC_RIGHT (ic));
- else
- break;
+ 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 ;
+ } else break;
ic = OP_SYMBOL (IC_LEFT (ic))->rematiCode;
}
else
strcpy (buffer, OP_SYMBOL (IC_LEFT (ic))->rname);
- aop->aopu.aop_immd = Safe_calloc (1, strlen (buffer) + 1);
- strcpy (aop->aopu.aop_immd, buffer);
+ aop->aopu.aop_immd.aop_immd1 = Safe_calloc (1, strlen (buffer) + 1);
+ strcpy (aop->aopu.aop_immd.aop_immd1, 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);
+ }
+
return aop;
}
}
/* if already has a asmop then continue */
- if (op->aop)
+ if (op->aop )
return;
/* if the underlying symbol has a aop */
return;
}
- /* else spill location */
- sym->aop = op->aop = aop =
- aopForSym (ic, sym->usl.spillLoc, result);
+ if (sym->usl.spillLoc)
+ {
+ if (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);
+ 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;
}
case AOP_STK:
{
int sz = aop->size;
- int stk = aop->aopu.aop_stk + aop->size;
+ int stk = aop->aopu.aop_stk + aop->size - 1;
bitVectUnSetBit (ic->rUsed, R0_IDX);
bitVectUnSetBit (ic->rUsed, R1_IDX);
}
op->aop = aop;
freeAsmop (op, NULL, ic, TRUE);
- if (_G.r0Pushed)
- {
- emitcode ("pop", "ar0");
- _G.r0Pushed--;
- }
-
if (_G.r1Pushed)
{
emitcode ("pop", "ar1");
_G.r1Pushed--;
}
+
+ if (_G.r0Pushed)
+ {
+ emitcode ("pop", "ar0");
+ _G.r0Pushed--;
+ }
}
}
}
}
+/*-----------------------------------------------------------------*/
+/* aopGetUsesAcc - indicates ahead of time whether aopGet() will */
+/* clobber the accumulator */
+/*-----------------------------------------------------------------*/
+static bool
+aopGetUsesAcc (asmop *aop, int offset)
+{
+ if (offset > (aop->size - 1))
+ return FALSE;
+
+ switch (aop->type)
+ {
+
+ case AOP_R0:
+ case AOP_R1:
+ if (aop->paged)
+ return TRUE;
+ return FALSE;
+ case AOP_DPTR:
+ return TRUE;
+ case AOP_IMMD:
+ return FALSE;
+ case AOP_DIR:
+ return FALSE;
+ case AOP_REG:
+ wassert(strcmp(aop->aopu.aop_reg[offset]->name, "a"));
+ return FALSE;
+ case AOP_CRY:
+ return TRUE;
+ case AOP_ACC:
+ return TRUE;
+ case AOP_LIT:
+ return FALSE;
+ case AOP_STR:
+ if (strcmp (aop->aopu.aop_str[offset], "a") == 0)
+ return TRUE;
+ return FALSE;
+ case AOP_DUMMY:
+ return FALSE;
+ default:
+ /* Error case --- will have been caught already */
+ wassert(0);
+ return FALSE;
+ }
+}
+
/*-----------------------------------------------------------------*/
/* aopGet - for fetching value of the aop */
/*-----------------------------------------------------------------*/
/* depending on type */
switch (aop->type)
{
-
+ case AOP_DUMMY:
+ return zero;
+
case AOP_R0:
case AOP_R1:
/* if we need to increment it */
return rs;
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");
+ }
+
while (offset > aop->coff)
{
emitcode ("inc", "dptr");
case AOP_IMMD:
- if (bit16)
- sprintf (s, "#%s", aop->aopu.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);
else if (offset)
sprintf (s, "#(%s >> %d)",
- aop->aopu.aop_immd,
+ aop->aopu.aop_immd.aop_immd1,
offset * 8);
else
sprintf (s, "#%s",
- aop->aopu.aop_immd);
+ aop->aopu.aop_immd.aop_immd1);
rs = Safe_calloc (1, strlen (s) + 1);
strcpy (rs, s);
return rs;
/* aopPut - puts a string for a aop */
/*-----------------------------------------------------------------*/
static void
-aopPut (asmop * aop, char *s, int offset)
+aopPut (asmop * aop, const char *s, int offset, bool bvolatile)
{
char *d = buffer;
/* depending on where it is ofcourse */
switch (aop->type)
{
+ case AOP_DUMMY:
+ MOVA (s); /* read s in case it was volatile */
+ break;
+
case AOP_DIR:
if (offset)
sprintf (d, "(%s + %d)",
else
sprintf (d, "%s", aop->aopu.aop_dir);
- if (strcmp (d, s))
+ if (strcmp (d, s) ||
+ bvolatile)
emitcode ("mov", "%s,%s", d, s);
break;
if (aop->code)
{
werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "aopPut writting to code space");
+ "aopPut writing to code space");
exit (1);
}
if (strcmp (s, "a") == 0)
emitcode ("push", "acc");
else
- emitcode ("push", "%s", s);
+ if (*s=='@') {
+ MOVA(s);
+ emitcode ("push", "acc");
+ } else {
+ emitcode ("push", s);
+ }
break;
MOVA (s);
}
{
- symbol *lbl = newiTempLabel (NULL);
- emitcode ("clr", "c");
- emitcode ("jz", "%05d$", lbl->key + 100);
- emitcode ("cpl", "c");
- emitcode ("", "%05d$:", lbl->key + 100);
+ /* set C, if a >= 1 */
+ emitcode ("add", "a,#0xff");
emitcode ("mov", "%s,c", aop->aopu.aop_dir);
}
}
case AOP_STR:
aop->coff = offset;
- if (strcmp (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:
aop->coff = offset;
- if (!offset && (strcmp (s, "acc") == 0))
+ if (!offset && (strcmp (s, "acc") == 0) &&
+ !bvolatile)
break;
- if (strcmp (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;
(x->aopu.aop_reg[0] == mcs51_regWithIdx(R0_IDX) || \
x->aopu.aop_reg[0] == mcs51_regWithIdx(R1_IDX) )))
-/*-----------------------------------------------------------------*/
-/* genNotFloat - generates not for float operations */
-/*-----------------------------------------------------------------*/
-static void
-genNotFloat (operand * op, operand * res)
-{
- int size, offset;
- char *l;
- symbol *tlbl;
-
- /* we will put 127 in the first byte of
- the result */
- aopPut (AOP (res), "#127", 0);
- size = AOP_SIZE (op) - 1;
- offset = 1;
-
- l = aopGet (op->aop, offset++, FALSE, FALSE);
- MOVA (l);
-
- while (size--)
- {
- emitcode ("orl", "a,%s",
- aopGet (op->aop,
- offset++, FALSE, FALSE));
- }
-
- tlbl = newiTempLabel (NULL);
- aopPut (res->aop, one, 1);
- emitcode ("jz", "%05d$", (tlbl->key + 100));
- aopPut (res->aop, zero, 1);
- emitcode ("", "%05d$:", (tlbl->key + 100));
-
- size = res->aop->size - 2;
- offset = 2;
- /* put zeros in the rest */
- while (size--)
- aopPut (res->aop, zero, offset++);
-}
/*-----------------------------------------------------------------*/
/* opIsGptr: returns non-zero if the passed operand is */
size = getDataSize (result);
if (size)
{
- aopPut (AOP (result), "a", 0);
+ aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
size--;
offset = 1;
/* unsigned or positive */
while (size--)
{
- aopPut (AOP (result), zero, offset++);
+ aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE));
}
}
}
{
/* if the result is bit */
if (AOP_TYPE (result) == AOP_CRY)
- aopPut (AOP (result), "c", 0);
+ aopPut (AOP (result), "c", 0, isOperandVolatile (result, FALSE));
else
{
emitcode ("clr", "a");
genNot (iCode * ic)
{
symbol *tlbl;
- sym_link *optype = operandType (IC_LEFT (ic));
+
+ D(emitcode ("; genNot",""));
/* assign asmOps to operand & result */
aopOp (IC_LEFT (ic), ic, FALSE);
goto release;
}
- /* if type float then do float */
- if (IS_FLOAT (optype))
- {
- genNotFloat (IC_LEFT (ic), IC_RESULT (ic));
- goto release;
- }
-
toBoolean (IC_LEFT (ic));
tlbl = newiTempLabel (NULL);
{
int offset = 0;
int size;
+ symbol *tlbl;
+ D(emitcode ("; genCpl",""));
/* assign asmOps to operand & result */
aopOp (IC_LEFT (ic), ic, FALSE);
aopOp (IC_RESULT (ic), ic, TRUE);
- /* if both are in bit space then
- a special case */
- if (AOP_TYPE (IC_RESULT (ic)) == AOP_CRY &&
- AOP_TYPE (IC_LEFT (ic)) == AOP_CRY)
+ /* 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);
+ goto release;
+ }
- 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);
+ tlbl=newiTempLabel(NULL);
+ if (AOP_TYPE (IC_LEFT (ic)) == AOP_ACC ||
+ AOP_TYPE (IC_LEFT (ic)) == AOP_REG ||
+ IS_AOP_PREG (IC_LEFT (ic)))
+ {
+ emitcode ("cjne", "%s,#0x01,%05d$",
+ aopGet (AOP (IC_LEFT (ic)), 0, FALSE, FALSE),
+ tlbl->key + 100);
+ }
+ else
+ {
+ char *l = aopGet (AOP (IC_LEFT (ic)), 0, FALSE, FALSE);
+ MOVA (l);
+ emitcode ("cjne", "a,#0x01,%05d$", tlbl->key + 100);
+ }
+ emitcode ("", "%05d$:", tlbl->key + 100);
+ outBitC (IC_RESULT(ic));
goto release;
}
char *l = aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE);
MOVA (l);
emitcode ("cpl", "a");
- aopPut (AOP (IC_RESULT (ic)), "a", offset++);
+ aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
}
{
int size, offset = 0;
char *l;
- /* for this we just need to flip the
- first it then copy the rest in place */
- size = AOP_SIZE (op) - 1;
- l = aopGet (AOP (op), 3, FALSE, FALSE);
- MOVA (l);
+ D(emitcode ("; genUminusFloat",""));
- emitcode ("cpl", "acc.7");
- aopPut (AOP (result), "a", 3);
+ /* for this we just copy and then flip the bit */
+
+ size = AOP_SIZE (op) - 1;
while (size--)
{
aopPut (AOP (result),
aopGet (AOP (op), offset, FALSE, FALSE),
- offset);
+ offset,
+ isOperandVolatile (result, FALSE));
offset++;
}
+
+ l = aopGet (AOP (op), offset, FALSE, FALSE);
+
+ MOVA (l);
+
+ emitcode ("cpl", "acc.7");
+ aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
}
/*-----------------------------------------------------------------*/
sym_link *optype, *rtype;
+ D(emitcode ("; genUminus",""));
+
/* assign asmops */
aopOp (IC_LEFT (ic), ic, FALSE);
aopOp (IC_RESULT (ic), ic, TRUE);
emitcode ("clr", "a");
emitcode ("subb", "a,%s", l);
}
- aopPut (AOP (IC_RESULT (ic)), "a", offset++);
+ aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
}
/* if any remaining bytes in the result */
emitcode ("rlc", "a");
emitcode ("subb", "a,acc");
while (size--)
- aopPut (AOP (IC_RESULT (ic)), "a", offset++);
+ aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
}
release:
int i;
iCode *ic;
bitVect *rsave;
- sym_link *detype;
/* look for call */
for (ic = lic; ic; ic = ic->next)
/* if the registers have been saved already or don't need to be then
do nothing */
- if (ic->regsSaved || (OP_SYMBOL (IC_LEFT (ic))->calleeSave) ||
- SPEC_NAKED(OP_SYM_ETYPE(IC_LEFT (ic))))
+ if (ic->regsSaved)
return;
-
- /* find the registers in use at this time
- and push them away to safety */
- rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
- ic->rUsed);
+ if (IS_SYMOP(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
+ ones for the result */
+ rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
+ mcs51_rUmaskForOp (IC_RESULT(ic)));
ic->regsSaved = 1;
if (options.useXstack)
if (bitVectBitValue (rsave, i))
emitcode ("push", "%s", mcs51_regWithIdx (i)->dname);
}
-
- detype = getSpec (operandType (IC_LEFT (ic)));
-
}
+
/*-----------------------------------------------------------------*/
/* unsaveRegisters - pop the pushed registers */
/*-----------------------------------------------------------------*/
{
int i;
bitVect *rsave;
- /* find the registers in use at this time
- and push them away to safety */
- rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
- ic->rUsed);
+
+ /* 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)));
if (options.useXstack)
{
int size = AOP_SIZE (oper);
while (size--)
{
- aopPut (AOP (oper), fReturn[offset], offset);
+ aopPut (AOP (oper), fReturn[offset], offset, isOperandVolatile (oper, FALSE));
offset++;
}
}
regs *r;
int size, offset = 0;
+ D(emitcode ("; genXpush",""));
+
aopOp (IC_LEFT (ic), ic, FALSE);
r = getFreePtr (ic, &aop, FALSE);
int size, offset = 0;
char *l;
- 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 */
{
int size, offset;
+ D(emitcode ("; genIpop",""));
/* if the temp was not pushed then */
if (OP_SYMBOL (IC_LEFT (ic))->isspilt)
}
}
+/*-----------------------------------------------------------------*/
+/* genSend - gen code for SEND */
+/*-----------------------------------------------------------------*/
+static void genSend(set *sendSet)
+{
+ iCode *sic;
+ int rb1_count = 0 ;
+
+ 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 (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);
+ }
+}
+
/*-----------------------------------------------------------------*/
/* genCall - generates a call statement */
/*-----------------------------------------------------------------*/
static void
genCall (iCode * ic)
{
- sym_link *detype;
- bool restoreBank = FALSE;
+ sym_link *dtype;
+// bool restoreBank = FALSE;
bool swapBanks = FALSE;
- D(emitcode(";", "genCall"));
+ D(emitcode("; genCall",""));
+
+ dtype = operandType (IC_LEFT (ic));
/* if send set is not empty the assign */
if (_G.sendSet)
{
- iCode *sic;
-
- 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));
- 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++;
- }
- freeAsmop (IC_LEFT (sic), NULL, sic, TRUE);
+ 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 */
- detype = getSpec (operandType (IC_LEFT (ic)));
- if (detype && !SPEC_NAKED(detype) &&
- (SPEC_BANK (currFunc->etype) != SPEC_BANK (detype)) &&
- IS_ISR (currFunc->etype))
+ dtype = operandType (IC_LEFT (ic));
+ if (currFunc && dtype && !IFFUNC_ISNAKED(dtype) &&
+ (FUNC_REGBANK (currFunc->type) != FUNC_REGBANK (dtype)) &&
+ !IFFUNC_ISISR (dtype))
{
- if (!ic->bankSaved)
- {
- /* This is unexpected; the bank should have been saved in
- * genFunction.
- */
- saveRBank (SPEC_BANK (detype), ic, FALSE);
- restoreBank = TRUE;
- }
- swapBanks = TRUE;
- }
-
+ swapBanks = TRUE;
+ }
+
/* if caller saves & we have not saved then */
if (!ic->regsSaved)
saveRegisters (ic);
if (swapBanks)
{
- emitcode ("mov", "psw,#0x%02x",
- ((SPEC_BANK(detype)) << 3) & 0xff);
+ emitcode ("mov", "psw,#0x%02x",
+ ((FUNC_REGBANK(dtype)) << 3) & 0xff);
}
/* make the call */
if (swapBanks)
{
- emitcode ("mov", "psw,#0x%02x",
- ((SPEC_BANK(currFunc->etype)) << 3) & 0xff);
+ emitcode ("mov", "psw,#0x%02x",
+ ((FUNC_REGBANK(currFunc->type)) << 3) & 0xff);
}
/* if we need assign a result value */
if ((IS_ITEMP (IC_RESULT (ic)) &&
(OP_SYMBOL (IC_RESULT (ic))->nRegs ||
+ OP_SYMBOL (IC_RESULT (ic))->accuse ||
OP_SYMBOL (IC_RESULT (ic))->spildir)) ||
IS_TRUE_SYMOP (IC_RESULT (ic)))
{
}
/* if we hade saved some registers then unsave them */
- if (ic->regsSaved && !(OP_SYMBOL (IC_LEFT (ic))->calleeSave))
+ if (ic->regsSaved && !IFFUNC_CALLEESAVES(dtype))
unsaveRegisters (ic);
- /* if register bank was saved then pop them */
- if (restoreBank)
- unsaveRBank (SPEC_BANK (detype), ic, FALSE);
+// /* if register bank was saved then pop them */
+// if (restoreBank)
+// unsaveRBank (FUNC_REGBANK (dtype), ic, FALSE);
}
/*-----------------------------------------------------------------*/
-/* genPcall - generates a call by pointer statement */
+/* -10l - generates a call by pointer statement */
/*-----------------------------------------------------------------*/
static void
genPcall (iCode * ic)
{
- sym_link *detype;
+ sym_link *dtype;
symbol *rlbl = newiTempLabel (NULL);
+// bool restoreBank=FALSE;
+ bool swapBanks = FALSE;
+ D(emitcode("; genPCall",""));
/* if caller saves & we have not saved then */
if (!ic->regsSaved)
saveRegisters (ic);
- /* if we are calling a function that is not using
+ /* 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 */
- detype = getSpec (operandType (IC_LEFT (ic)));
- if (detype &&
- IS_ISR (currFunc->etype) &&
- (SPEC_BANK (currFunc->etype) != SPEC_BANK (detype)))
- saveRBank (SPEC_BANK (detype), ic, TRUE);
-
+ 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));
/* if send set is not empty the assign */
if (_G.sendSet)
{
- iCode *sic;
-
- 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));
- 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++;
- }
- freeAsmop (IC_LEFT (sic), NULL, sic, TRUE);
- }
- _G.sendSet = NULL;
+ genSend(reverseSet(_G.sendSet));
+ _G.sendSet = NULL;
}
+ if (swapBanks)
+ {
+ emitcode ("mov", "psw,#0x%02x",
+ ((FUNC_REGBANK(dtype)) << 3) & 0xff);
+ }
+
+ /* make the call */
emitcode ("ret", "");
emitcode ("", "%05d$:", (rlbl->key + 100));
+ if (swapBanks)
+ {
+ emitcode ("mov", "psw,#0x%02x",
+ ((FUNC_REGBANK(currFunc->type)) << 3) & 0xff);
+ }
+
/* if we need assign a result value */
if ((IS_ITEMP (IC_RESULT (ic)) &&
(OP_SYMBOL (IC_RESULT (ic))->nRegs ||
}
- /* if register bank was saved then unsave them */
- if (detype &&
- (SPEC_BANK (currFunc->etype) !=
- SPEC_BANK (detype)))
- unsaveRBank (SPEC_BANK (detype), ic, TRUE);
+// /* 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 (ic->regsSaved)
+ if (ic->regsSaved && !IFFUNC_CALLEESAVES(dtype))
unsaveRegisters (ic);
-
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
/* inExcludeList - return 1 if the string is in exclude Reg list */
/*-----------------------------------------------------------------*/
+static int
+regsCmp(void *p1, void *p2)
+{
+ return (STRCASECMP((char *)p1, (char *)(p2)) == 0);
+}
+
static bool
inExcludeList (char *s)
{
- int i = 0;
+ const char *p = setFirstItem(options.excludeRegsSet);
- if (options.excludeRegs[i] &&
- STRCASECMP (options.excludeRegs[i], "none") == 0)
+ if (p == NULL || STRCASECMP(p, "none") == 0)
return FALSE;
- for (i = 0; options.excludeRegs[i]; i++)
- {
- if (options.excludeRegs[i] &&
- STRCASECMP (s, options.excludeRegs[i]) == 0)
- return TRUE;
- }
- return FALSE;
+
+ return isinSetWith(options.excludeRegsSet, s, regsCmp);
}
/*-----------------------------------------------------------------*/
genFunction (iCode * ic)
{
symbol *sym;
- sym_link *fetype;
+ sym_link *ftype;
bool switchedPSW = FALSE;
+ int calleesaves_saved_register = -1;
_G.nRegsSaved = 0;
/* create the function header */
emitcode (";", "-----------------------------------------");
emitcode ("", "%s:", sym->rname);
- fetype = getSpec (operandType (IC_LEFT (ic)));
+ ftype = operandType (IC_LEFT (ic));
- if (SPEC_NAKED(fetype))
+ if (IFFUNC_ISNAKED(ftype))
{
emitcode(";", "naked function: no prologue.");
return;
}
- /* if critical function then turn interrupts off */
- if (SPEC_CRTCL (fetype))
- emitcode ("clr", "ea");
-
/* here we need to generate the equates for the
register bank if required */
- if (SPEC_BANK (fetype) != rbank)
+ if (FUNC_REGBANK (ftype) != rbank)
{
int i;
- rbank = SPEC_BANK (fetype);
+ rbank = FUNC_REGBANK (ftype);
for (i = 0; i < mcs51_nRegs; i++)
{
if (strcmp (regs8051[i].base, "0") == 0)
/* if this is an interrupt service routine then
save acc, b, dpl, dph */
- if (IS_ISR (sym->etype))
+ if (IFFUNC_ISISR (sym->type))
{
if (!inExcludeList ("acc"))
/* if this isr has no bank i.e. is going to
run with bank 0 , then we need to save more
registers :-) */
- if (!SPEC_BANK (sym->etype))
+ 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 (!sym->hasFcall)
+ if (!IFFUNC_HASFCALL(sym->type))
{
int i;
}
else
{
+
/* this function has a function call cannot
determines register usage so we will have to push the
entire bank */
- saveRBank (0, ic, FALSE);
+ saveRBank (0, ic, FALSE);
+ if (options.parms_in_bank1) {
+ int i;
+ for (i=0; i < 8 ; i++ ) {
+ emitcode ("push","%s",rb1regs[i]);
+ }
+ }
}
}
else
*/
unsigned long banksToSave = 0;
- if (sym->hasFcall)
+ if (IFFUNC_HASFCALL(sym->type))
{
#define MAX_REGISTER_BANKS 4
if (i->op == CALL)
{
- sym_link *detype;
+ sym_link *dtype;
- detype = getSpec(operandType (IC_LEFT(i)));
- if (detype
- && SPEC_BANK(detype) != SPEC_BANK(sym->etype))
+ dtype = operandType (IC_LEFT(i));
+ if (dtype
+ && FUNC_REGBANK(dtype) != FUNC_REGBANK(sym->type))
{
/* Mark this bank for saving. */
- if (SPEC_BANK(detype) >= MAX_REGISTER_BANKS)
+ if (FUNC_REGBANK(dtype) >= MAX_REGISTER_BANKS)
{
- werror(E_NO_SUCH_BANK, SPEC_BANK(detype));
+ werror(E_NO_SUCH_BANK, FUNC_REGBANK(dtype));
}
else
{
- banksToSave |= (1 << SPEC_BANK(detype));
+ banksToSave |= (1 << FUNC_REGBANK(dtype));
}
/* And note that we don't need to do it in
*/
emitcode ("push", "psw");
emitcode ("mov", "psw,#0x%02x",
- (SPEC_BANK (sym->etype) << 3) & 0x00ff);
+ (FUNC_REGBANK (sym->type) << 3) & 0x00ff);
switchedPSW = TRUE;
}
}
}
}
+ // TODO: this needs a closer look
SPEC_ISR_SAVED_BANKS(currFunc->etype) = banksToSave;
}
}
{
/* if callee-save to be used for this function
then save the registers being used in this function */
- if (sym->calleeSave)
+ if (IFFUNC_CALLEESAVES(sym->type))
{
int 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++;
}
}
/* set the register bank to the desired value */
- if ((SPEC_BANK (sym->etype) || IS_ISR (sym->etype))
+ if (( /* FUNC_REGBANK (sym->type) || */ IFFUNC_ISISR (sym->type))
&& !switchedPSW)
{
emitcode ("push", "psw");
- emitcode ("mov", "psw,#0x%02x", (SPEC_BANK (sym->etype) << 3) & 0x00ff);
+ emitcode ("mov", "psw,#0x%02x", (FUNC_REGBANK (sym->type) << 3) & 0x00ff);
}
- if (IS_RENT (sym->etype) || options.stackAuto)
+ if (IFFUNC_ISREENT (sym->type) || options.stackAuto)
{
if (options.useXstack)
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");
+ }
+ }
else
while (i--)
emitcode ("inc", "sp");
emitcode ("add", "a,#0x%02x", ((char) sym->xstack & 0xff));
emitcode ("mov", "_spx,a");
}
-
+
+ /* 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");
+ emitcode ("", "%05d$:", (tlbl->key + 100));
+ emitcode ("push", "psw"); /* save old ea via c in psw */
+ }
}
/*-----------------------------------------------------------------*/
{
symbol *sym = OP_SYMBOL (IC_LEFT (ic));
- if (SPEC_NAKED(sym->etype))
+ if (IFFUNC_ISNAKED(sym->type))
{
emitcode(";", "naked function: no epilogue.");
return;
}
+
+ if (IFFUNC_ISCRITICAL (sym->type))
+ {
+ emitcode ("pop", "psw"); /* restore ea via c in psw */
+ emitcode ("mov", "ea,c");
+ }
- if (IS_RENT (sym->etype) || options.stackAuto)
+ if (IFFUNC_ISREENT (sym->type) || options.stackAuto)
{
emitcode ("mov", "%s,_bp", spname);
}
}
- if ((IS_RENT (sym->etype) || options.stackAuto))
+ if ((IFFUNC_ISREENT (sym->type) || options.stackAuto))
{
if (options.useXstack)
{
}
/* restore the register bank */
- if (SPEC_BANK (sym->etype) || IS_ISR (sym->etype))
+ if ( /* FUNC_REGBANK (sym->type) || */ IFFUNC_ISISR (sym->type))
{
- if (!SPEC_BANK (sym->etype) || !IS_ISR (sym->etype)
+ if (/* !FUNC_REGBANK (sym->type) || */ !IFFUNC_ISISR (sym->type)
|| !options.useXstack)
{
/* Special case of ISR using non-zero bank with useXstack
}
}
- if (IS_ISR (sym->etype))
+ 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 (!SPEC_BANK (sym->etype))
+ 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 (!sym->hasFcall)
+ if (!IFFUNC_HASFCALL(sym->type))
{
int i;
}
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 */
if (!inExcludeList ("acc"))
emitcode ("pop", "acc");
- if (SPEC_CRTCL (sym->etype))
- emitcode ("setb", "ea");
-
/* if debug then send end of function */
- /* if (options.debug && currFunc) */
if (options.debug && currFunc)
{
_G.debugLine = 1;
}
else
{
- if (SPEC_CRTCL (sym->etype))
- emitcode ("setb", "ea");
-
- if (sym->calleeSave)
+ if (IFFUNC_CALLEESAVES(sym->type))
{
int i;
{
int size, offset = 0, pushed = 0;
+ D(emitcode ("; genRet",""));
+
/* if we have no return value then
just generate the "ret" */
if (!IC_LEFT (ic))
ic = ic->prev;
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 */
+ if (ic->op == IPUSH || ic->op == IPOP) {
+ return 0;
+ }
+
if (ic->op == LABEL && IC_LABEL (ic)->key == key)
{
- /* printf("findLabelBackwards = %d\n", count); */
return count;
}
}
if ((icount = (unsigned int) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit)) > 4)
return FALSE;
- /* if increment 16 bits in register */
- if (sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))) &&
+ 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))) &&
(size > 1) &&
(icount == 1))
{
emitcode ("inc", "%s", aopGet (AOP (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);
+ emitcode ("cjne", "%s,#0x00,%05d$",
+ aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE),
+ tlbl->key + 100);
else
{
emitcode ("clr", "a");
- emitcode ("cjne", "a,%s,%05d$"
- ,aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE)
- ,tlbl->key + 100);
+ emitcode ("cjne", "a,%s,%05d$",
+ aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE),
+ tlbl->key + 100);
}
emitcode ("inc", "%s", aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE));
{
if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG ||
IS_AOP_PREG (IC_RESULT (ic)))
- emitcode ("cjne", "%s,#0x00,%05d$"
- ,aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE)
- ,tlbl->key + 100);
+ 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 ("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 (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE)
- ,tlbl->key + 100);
+ 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 ("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));
}
{
MOVA (aopGet (AOP (IC_LEFT (ic)), 0, FALSE, FALSE));
emitcode ("add", "a,#0x%02x", ((char) icount) & 0xff);
- aopPut (AOP (IC_RESULT (ic)), "a", 0);
+ aopPut (AOP (IC_RESULT (ic)), "a", 0, isOperandVolatile (IC_RESULT (ic), FALSE));
}
else
{
/* if the result is a bit */
if (AOP_TYPE (result) == AOP_CRY)
{
- aopPut (AOP (result), "a", 0);
+ aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
}
else
{
static void
genPlusBits (iCode * ic)
{
+ D(emitcode ("; genPlusBits",""));
+
if (AOP_TYPE (IC_RESULT (ic)) == AOP_CRY)
{
symbol *lbl = newiTempLabel (NULL);
!sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic))))
aopPut (AOP (IC_RESULT (ic)),
aopGet (AOP (IC_LEFT (ic)), 2, FALSE, FALSE),
- 2);
+ 2,
+ isOperandVolatile (IC_RESULT (ic), FALSE));
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);
+ 2,
+ isOperandVolatile (IC_RESULT (ic), FALSE));
if (AOP_SIZE (IC_RESULT (ic)) == 3 &&
AOP_SIZE (IC_LEFT (ic)) < 3 &&
{
char buffer[5];
sprintf (buffer, "#%d", pointerCode (getSpec (operandType (IC_LEFT (ic)))));
- aopPut (AOP (IC_RESULT (ic)), buffer, 2);
+ aopPut (AOP (IC_RESULT (ic)), buffer, 2, isOperandVolatile (IC_RESULT (ic), FALSE));
}
}
#else
{
aopPut (AOP (IC_RESULT (ic)),
aopGet (AOP (IC_LEFT (ic)), GPTRSIZE - 1, FALSE, FALSE),
- GPTRSIZE - 1);
+ GPTRSIZE - 1,
+ isOperandVolatile (IC_RESULT (ic), FALSE));
}
if (opIsGptr (IC_RESULT (ic)) &&
{
aopPut (AOP (IC_RESULT (ic)),
aopGet (AOP (IC_RIGHT (ic)), GPTRSIZE - 1, FALSE, FALSE),
- GPTRSIZE - 1);
+ GPTRSIZE - 1,
+ isOperandVolatile (IC_RESULT (ic), FALSE));
}
if (opIsGptr (IC_RESULT (ic)) &&
{
char buffer[5];
sprintf (buffer, "#%d", pointerCode (getSpec (operandType (IC_LEFT (ic)))));
- aopPut (AOP (IC_RESULT (ic)), buffer, GPTRSIZE - 1);
+ aopPut (AOP (IC_RESULT (ic)), buffer, GPTRSIZE - 1, isOperandVolatile (IC_RESULT (ic), FALSE));
}
}
#endif
genPlus (iCode * ic)
{
int size, offset = 0;
+ int skip_bytes = 0;
+ char *add = "add";
+ asmop *leftOp, *rightOp;
+ operand * op;
/* special cases :- */
+ D(emitcode ("; genPlus",""));
+
aopOp (IC_LEFT (ic), ic, FALSE);
aopOp (IC_RIGHT (ic), ic, FALSE);
aopOp (IC_RESULT (ic), ic, TRUE);
{
MOVA (aopGet (AOP (IC_RIGHT (ic)), offset, FALSE, FALSE));
emitcode ("addc", "a,#00");
- aopPut (AOP (IC_RESULT (ic)), "a", offset++);
+ aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
}
}
goto release;
goto release;
size = getDataSize (IC_RESULT (ic));
+ leftOp = AOP(IC_LEFT(ic));
+ rightOp = AOP(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 (AOP (IC_RESULT (ic)),
+ aopGet (rightOp, 0, FALSE, FALSE),
+ 0,
+ isOperandVolatile (IC_RESULT (ic), FALSE));
- while (size--)
- {
- if (AOP_TYPE (IC_LEFT (ic)) == AOP_ACC)
+ if( 1 == getDataSize (IC_RIGHT (ic)) )
{
- MOVA (aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE));
- if (offset == 0)
- emitcode ("add", "a,%s",
- aopGet (AOP (IC_RIGHT (ic)), offset, FALSE, FALSE));
- else
- emitcode ("addc", "a,%s",
- aopGet (AOP (IC_RIGHT (ic)), offset, FALSE, FALSE));
+ aopPut (AOP (IC_RESULT (ic)),
+ aopGet (leftOp, 1, FALSE, FALSE),
+ 1,
+ isOperandVolatile (IC_RESULT (ic), FALSE));
}
else
- {
- MOVA (aopGet (AOP (IC_RIGHT (ic)), offset, FALSE, FALSE));
- if (offset == 0)
- emitcode ("add", "a,%s",
- aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE));
+ {
+ MOVA (aopGet (AOP (IC_LEFT (ic)), 1, FALSE, FALSE));
+ emitcode ("add", "a,%s", aopGet (rightOp, 1, FALSE, FALSE));
+ aopPut (AOP (IC_RESULT (ic)), "a", 1, isOperandVolatile (IC_RESULT (ic), FALSE));
+ }
+ goto release;
+ }
+
+ /* 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( offset >= skip_bytes )
+ {
+ 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));
+ }
else
- emitcode ("addc", "a,%s",
- aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE));
+ {
+ 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 */
+ }
+ else
+ {
+ if( !sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))) ||
+ isOperandVolatile (IC_RESULT (ic), FALSE))
+ {
+ /* just move */
+ aopPut (AOP (IC_RESULT (ic)),
+ aopGet (leftOp, offset, FALSE, FALSE),
+ offset,
+ isOperandVolatile (IC_RESULT (ic), FALSE));
+ }
}
- aopPut (AOP (IC_RESULT (ic)), "a", offset++);
+ offset++;
}
adjustArithmeticResult (ic);
if ((icount = (unsigned int) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit)) > 4)
return FALSE;
- /* if decrement 16 bits in register */
- if (sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))) &&
+ 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) &&
+ sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))) &&
(size > 1) &&
(icount == 1))
{
emitcode ("rlc", "a");
emitcode ("subb", "a,acc");
while (size--)
- aopPut (AOP (result), "a", offset++);
+ aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
}
else
while (size--)
- aopPut (AOP (result), zero, offset++);
+ aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE));
}
}
genMinusBits (iCode * ic)
{
symbol *lbl = newiTempLabel (NULL);
+
+ 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_LEFT (ic))->aopu.aop_dir, (lbl->key + 100));
emitcode ("inc", "a");
emitcode ("", "%05d$:", (lbl->key + 100));
- aopPut (AOP (IC_RESULT (ic)), "a", 0);
+ aopPut (AOP (IC_RESULT (ic)), "a", 0, isOperandVolatile (IC_RESULT (ic), FALSE));
addSign (IC_RESULT (ic), MSB16, SPEC_USIGN (getSpec (operandType (IC_RESULT (ic)))));
}
}
genMinus (iCode * ic)
{
int size, offset = 0;
- unsigned long lit = 0L;
+
+ D(emitcode ("; genMinus",""));
aopOp (IC_LEFT (ic), ic, FALSE);
aopOp (IC_RIGHT (ic), ic, FALSE);
size = getDataSize (IC_RESULT (ic));
- if (AOP_TYPE (IC_RIGHT (ic)) != AOP_LIT)
- {
- CLRC;
- }
- else
+ /* if literal, add a,#-lit, else normal subb */
+ if (AOP_TYPE (IC_RIGHT (ic)) == AOP_LIT)
{
+ unsigned long lit = 0L;
+
lit = (unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit);
lit = -(long) lit;
- }
- /* if literal, add a,#-lit, else normal subb */
- while (size--)
- {
- MOVA (aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE));
- if (AOP_TYPE (IC_RIGHT (ic)) != AOP_LIT)
- emitcode ("subb", "a,%s",
- aopGet (AOP (IC_RIGHT (ic)), offset, FALSE, FALSE));
- else
+ while (size--)
{
+ MOVA (aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE));
/* first add without previous c */
if (!offset) {
- if (!size && lit==-1) {
+ if (!size && lit== (unsigned long) -1) {
emitcode ("dec", "a");
} else {
- emitcode ("add", "a,#0x%02x",
+ 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));
}
- aopPut (AOP (IC_RESULT (ic)), "a", offset++);
}
+ else
+ {
+ asmop *leftOp, *rightOp;
+ leftOp = AOP(IC_LEFT(ic));
+ rightOp = AOP(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));
+ }
+ }
+
+
adjustArithmeticResult (ic);
release:
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);
symbol *lbl;
int size=AOP_SIZE(result);
+ D(emitcode ("; genMultOneByte",""));
+
if (size<1 || size>2) {
// this should never happen
- fprintf (stderr, "size!=1||2 (%d) in %s at line:%d \n",
+ fprintf (stderr, "size!=1||2 (%d) in %s at line:%d \n",
AOP_SIZE(result), __FILE__, lineno);
exit (1);
}
if (SPEC_USIGN(opetype)
// ignore the sign of left and right, what else can we do?
- || (SPEC_USIGN(operandType(left)) &&
+ || (SPEC_USIGN(operandType(left)) &&
SPEC_USIGN(operandType(right)))) {
// just an unsigned 8*8=8/16 multiply
//emitcode (";","unsigned");
- emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE));
- MOVA (aopGet (AOP (left), 0, FALSE, FALSE));
+ // TODO: check for accumulator clash between left & right aops?
+
+ if( AOP_TYPE(right)==AOP_LIT ){
+ // moving to accumulator first helps peepholes
+ MOVA (aopGet (AOP (left), 0, FALSE, FALSE));
+ emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE));
+ } else {
+ 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);
+ aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
if (size==2) {
- aopPut (AOP (result), "b", 1);
+ aopPut (AOP (result), "b", 1, isOperandVolatile (result, FALSE));
}
return;
}
/* if literal */
if (AOP_TYPE(right)==AOP_LIT) {
- signed char val=floatFromVal (AOP (right)->aopu.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 ("", "%05d$:", lbl->key+100);
}
emitcode ("mul", "ab");
-
+
lbl=newiTempLabel(NULL);
emitcode ("jnb", "F0,%05d$", lbl->key+100);
// only ONE op was negative, we have to do a 8/16-bit two's complement
}
emitcode ("", "%05d$:", lbl->key+100);
- aopPut (AOP (result), "a", 0);
+ aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
if (size==2) {
- aopPut (AOP (result), "b", 1);
+ aopPut (AOP (result), "b", 1, isOperandVolatile (result, FALSE));
}
}
operand *right = IC_RIGHT (ic);
operand *result = IC_RESULT (ic);
+ D(emitcode ("; genMult",""));
+
/* assign the amsops */
aopOp (left, ic, FALSE);
aopOp (right, ic, FALSE);
}
/* if both are of size == 1 */
- if (AOP_SIZE (left) == 1 &&
- AOP_SIZE (right) == 1)
+#if 0 // one of them can be a sloc shared with the result
+ if (AOP_SIZE (left) == 1 && AOP_SIZE (right) == 1)
+#else
+ if (getSize(operandType(left)) == 1 &&
+ getSize(operandType(right)) == 1)
+#endif
{
genMultOneByte (left, right, result);
goto release;
}
/* should have been converted to function call */
- assert (1);
+ fprintf (stderr, "left: %d right: %d\n", getSize(OP_SYMBOL(left)->type),
+ getSize(OP_SYMBOL(right)->type));
+ assert (0);
release:
- freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
}
/*-----------------------------------------------------------------*/
char *l;
+ D(emitcode ("; genDivbits",""));
+
/* the result must be bit */
emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE));
l = aopGet (AOP (left), 0, FALSE, FALSE);
emitcode ("div", "ab");
emitcode ("rrc", "a");
- aopPut (AOP (result), "c", 0);
+ aopPut (AOP (result), "c", 0, isOperandVolatile (result, FALSE));
}
/*-----------------------------------------------------------------*/
symbol *lbl;
int size, offset;
+ D(emitcode ("; genDivOneByte",""));
+
size = AOP_SIZE (result) - 1;
offset = 1;
/* signed or unsigned */
l = aopGet (AOP (left), 0, FALSE, FALSE);
MOVA (l);
emitcode ("div", "ab");
- aopPut (AOP (result), "a", 0);
+ aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
while (size--)
- aopPut (AOP (result), zero, offset++);
+ aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE));
return;
}
emitcode ("", "%05d$:", (lbl->key + 100));
/* now we are done */
- aopPut (AOP (result), "b", 0);
+ aopPut (AOP (result), "b", 0, isOperandVolatile (result, FALSE));
if (size > 0)
{
emitcode ("mov", "c,b.7");
emitcode ("subb", "a,acc");
}
while (size--)
- aopPut (AOP (result), "a", offset++);
+ aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
}
operand *right = IC_RIGHT (ic);
operand *result = IC_RESULT (ic);
+ D(emitcode ("; genDiv",""));
+
/* assign the amsops */
aopOp (left, ic, FALSE);
aopOp (right, ic, FALSE);
}
/* should have been converted to function call */
- assert (1);
+ assert (0);
release:
- freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (result, NULL, ic, TRUE);
}
char *l;
+ D(emitcode ("; genModbits",""));
+
/* the result must be bit */
emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE));
l = aopGet (AOP (left), 0, FALSE, FALSE);
emitcode ("div", "ab");
emitcode ("mov", "a,b");
emitcode ("rrc", "a");
- aopPut (AOP (result), "c", 0);
+ aopPut (AOP (result), "c", 0, isOperandVolatile (result, FALSE));
}
/*-----------------------------------------------------------------*/
char *l;
symbol *lbl;
+ D(emitcode ("; genModOneByte",""));
+
/* signed or unsigned */
if (SPEC_USIGN (opetype))
{
l = aopGet (AOP (left), 0, FALSE, FALSE);
MOVA (l);
emitcode ("div", "ab");
- aopPut (AOP (result), "b", 0);
+ aopPut (AOP (result), "b", 0, isOperandVolatile (result, FALSE));
return;
}
emitcode ("", "%05d$:", (lbl->key + 100));
/* now we are done */
- aopPut (AOP (result), "b", 0);
+ aopPut (AOP (result), "b", 0, isOperandVolatile (result, FALSE));
}
operand *right = IC_RIGHT (ic);
operand *result = IC_RESULT (ic);
+ D(emitcode ("; genMod",""));
+
/* assign the amsops */
aopOp (left, ic, FALSE);
aopOp (right, ic, FALSE);
}
/* should have been converted to function call */
- assert (1);
+ assert (0);
release:
- freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (result, NULL, ic, TRUE);
}
symbol *tlbl = newiTempLabel (NULL);
char *inst;
+ D(emitcode ("; genIfxJump",""));
+
/* if true label then we jump if condition
supplied is true */
if (IC_TRUE (ic))
{
int size, offset = 0;
unsigned long lit = 0L;
+ bool rightInB;
+
+ D(emitcode ("; genCmp",""));
/* if left & right are bit variables */
if (AOP_TYPE (left) == AOP_CRY &&
AOP_TYPE (right) == AOP_CRY)
{
emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
- emitcode ("anl", "c,/%s", AOP (left)->aopu.aop_dir);
+ emitcode ("anl", "c,%s", AOP (left)->aopu.aop_dir);
}
else
{
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)
{
}
else
{
- emitcode ("mov", "b,%s", aopGet (AOP (right), offset++, FALSE, FALSE));
+ if (!rightInB)
+ emitcode ("mov", "b,%s", aopGet (AOP (right), offset, FALSE, FALSE));
emitcode ("xrl", "b,#0x80");
emitcode ("subb", "a,b");
}
}
else
- emitcode ("subb", "a,%s", aopGet (AOP (right), offset++, FALSE, FALSE));
+ {
+ if (rightInB)
+ emitcode ("subb", "a,b");
+ else
+ emitcode ("subb", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE));
+ }
+ offset++;
}
}
}
release:
- freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
if (AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result))
{
outBitC (result);
sym_link *letype, *retype;
int sign;
+ D(emitcode ("; genCmpGt",""));
+
left = IC_LEFT (ic);
right = IC_RIGHT (ic);
result = IC_RESULT (ic);
sym_link *letype, *retype;
int sign;
+ D(emitcode ("; genCmpLt",""));
+
left = IC_LEFT (ic);
right = IC_RIGHT (ic);
result = IC_RESULT (ic);
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);
/* if the right side is a literal then anything goes */
if (AOP_TYPE (right) == AOP_LIT &&
- AOP_TYPE (left) != AOP_DIR)
+ AOP_TYPE (left) != AOP_DIR &&
+ AOP_TYPE (left) != AOP_IMMD)
{
while (size--)
{
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 (right) == AOP_IMMD ||
(AOP_TYPE (left) == AOP_DIR && AOP_TYPE (right) == AOP_LIT) ||
(IS_AOP_PREG (left) && !IS_AOP_PREG (right)))
{
{
operand *left, *right, *result;
+ D(emitcode ("; genCmpEq",""));
+
aopOp ((left = IC_LEFT (ic)), ic, FALSE);
aopOp ((right = IC_RIGHT (ic)), ic, FALSE);
aopOp ((result = IC_RESULT (ic)), ic, TRUE);
gencjne (left, right, newiTempLabel (NULL));
if (AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result))
{
- aopPut (AOP (result), "a", 0);
+ aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
goto release;
}
if (ifx)
}
release:
- freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (result, NULL, ic, TRUE);
}
/* hasInc - operand is incremented before any other use */
/*-----------------------------------------------------------------*/
static iCode *
-hasInc (operand *op, iCode *ic)
+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;
+
if (IS_BITVAR(retype)||!IS_PTR(type)) return NULL;
- isize = getSize(type->next);
+ if (IS_AGGREGATE(type->next)) return NULL;
+ if (osize != (isize = getSize(type->next))) return NULL;
+
while (lic) {
/* if operand of the form op = op + <sizeof *op> */
if (lic->op == '+' && isOperandEqual(IC_LEFT(lic),op) &&
if (bitVectBitValue(OP_USES(op),lic->key) || (unsigned) lic->defKey == op->key) {
return NULL;
}
+ /* if GOTO or IFX */
+ if (lic->op == IFX || lic->op == GOTO || lic->op == LABEL) break;
lic = lic->next;
}
return NULL;
operand *left, *right, *result;
symbol *tlbl;
+ D(emitcode ("; genAndOp",""));
+
/* note here that && operations that are in an
if statement are taken away by backPatchLabels
only those used in arthmetic operations remain */
outBitAcc (result);
}
- freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : 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",""));
+
/* note here that || operations that are in an
if statement are taken away by backPatchLabels
only those used in arthmetic operations remain */
outBitAcc (result);
}
- freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (result, NULL, ic, TRUE);
}
int bytelit = 0;
char buffer[10];
+ D(emitcode ("; genAnd",""));
+
aopOp ((left = IC_LEFT (ic)), ic, FALSE);
aopOp ((right = IC_RIGHT (ic)), ic, FALSE);
aopOp ((result = IC_RESULT (ic)), ic, TRUE);
{
if (ifx)
jmpTrueOrFalse (ifx, tlbl);
+ else
+ emitcode ("", "%05d$:", tlbl->key + 100);
goto release;
}
}
if ((bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL)) == 0x0FF)
continue;
else if (bytelit == 0)
- aopPut (AOP (result), zero, offset);
+ {
+ aopPut (AOP (result), zero, offset, isOperandVolatile (result, FALSE));
+ }
else if (IS_AOP_PREG (result))
{
MOVA (aopGet (AOP (right), offset, FALSE, FALSE));
emitcode ("anl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE));
- aopPut (AOP (result), "a", offset);
+ aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
}
else
emitcode ("anl", "%s,%s",
if (IS_AOP_PREG (result))
{
emitcode ("anl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE));
- aopPut (AOP (result), "a", offset);
+ aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
}
else
}
else if (ifx)
jmpTrueOrFalse (ifx, tlbl);
+ else
+ emitcode ("", "%05d$:", tlbl->key + 100);
}
else
{
{
aopPut (AOP (result),
aopGet (AOP (left), offset, FALSE, FALSE),
- offset);
+ offset,
+ isOperandVolatile (result, FALSE));
continue;
}
else if (bytelit == 0)
{
- aopPut (AOP (result), zero, offset);
+ /* 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;
}
}
emitcode ("anl", "a,%s",
aopGet (AOP (left), offset, FALSE, FALSE));
}
- aopPut (AOP (result), "a", offset);
+ aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
}
}
}
release:
- freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (result, NULL, ic, TRUE);
}
int size, offset = 0;
unsigned long lit = 0L;
+ D(emitcode ("; genOr",""));
+
aopOp ((left = IC_LEFT (ic)), ic, FALSE);
aopOp ((right = IC_RIGHT (ic)), ic, FALSE);
aopOp ((result = IC_RESULT (ic)), ic, TRUE);
{
if (AOP_TYPE (right) == AOP_LIT)
{
- // c = bit & literal;
+ // c = bit | literal;
if (lit)
{
// lit != 0 => result = 1
if (AOP_TYPE (right) == AOP_LIT)
{
if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)
- continue;
+ {
+ /* 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);
+ aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
}
else
emitcode ("orl", "%s,%s",
if (IS_AOP_PREG (left))
{
emitcode ("orl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE));
- aopPut (AOP (result), "a", offset);
+ aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
}
else
emitcode ("orl", "%s,a",
}
else if (ifx)
jmpTrueOrFalse (ifx, tlbl);
+ else
+ emitcode ("", "%05d$:", tlbl->key + 100);
}
else
for (; (size--); offset++)
{
aopPut (AOP (result),
aopGet (AOP (left), offset, FALSE, FALSE),
- offset);
+ offset,
+ isOperandVolatile (result, FALSE));
continue;
}
}
emitcode ("orl", "a,%s",
aopGet (AOP (left), offset, FALSE, FALSE));
}
- aopPut (AOP (result), "a", offset);
+ aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
}
}
release:
- freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
freeAsmop (result, NULL, ic, TRUE);
}
int size, offset = 0;
unsigned long lit = 0L;
+ D(emitcode ("; genXor",""));
+
aopOp ((left = IC_LEFT (ic)), ic, FALSE);
aopOp ((right = IC_RIGHT (ic)), ic, FALSE);
aopOp ((result = IC_RESULT (ic)), ic, TRUE);
{
MOVA (aopGet (AOP (right), offset, FALSE, FALSE));
emitcode ("xrl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE));
- aopPut (AOP (result), "a", offset);
+ aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
}
else
emitcode ("xrl", "%s,%s",
if (IS_AOP_PREG (left))
{
emitcode ("xrl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE));
- aopPut (AOP (result), "a", offset);
+ aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
}
else
emitcode ("xrl", "%s,a",
{
aopPut (AOP (result),
aopGet (AOP (left), offset, FALSE, FALSE),
- offset);
+ offset,
+ isOperandVolatile (result, FALSE));
continue;
}
}
emitcode ("xrl", "a,%s",
aopGet (AOP (left), offset, FALSE, TRUE));
}
- aopPut (AOP (result), "a", offset);
+ aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
}
}
release:
- freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : 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",""));
+
_G.inLine += (!options.asmpeep);
buffer = bp = bp1 = Safe_calloc(1, strlen(IC_INLINE(ic))+1);
int size, offset = 0;
char *l;
+ D(emitcode ("; genRRC",""));
+
/* rotate right with carry */
left = IC_LEFT (ic);
result = IC_RESULT (ic);
MOVA (l);
emitcode ("rrc", "a");
if (AOP_SIZE (result) > 1)
- aopPut (AOP (result), "a", offset--);
+ aopPut (AOP (result), "a", offset--, isOperandVolatile (result, FALSE));
}
/* now we need to put the carry into the
highest order byte of the result */
}
emitcode ("mov", "acc.7,c");
release:
- aopPut (AOP (result), "a", AOP_SIZE (result) - 1);
+ aopPut (AOP (result), "a", AOP_SIZE (result) - 1, isOperandVolatile (result, FALSE));
freeAsmop (left, NULL, ic, TRUE);
freeAsmop (result, NULL, ic, TRUE);
}
int size, offset = 0;
char *l;
+ D(emitcode ("; genRLC",""));
+
/* rotate right with carry */
left = IC_LEFT (ic);
result = IC_RESULT (ic);
}
emitcode ("add", "a,acc");
if (AOP_SIZE (result) > 1)
- aopPut (AOP (result), "a", offset++);
+ aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
while (size--)
{
l = aopGet (AOP (left), offset, FALSE, FALSE);
MOVA (l);
emitcode ("rlc", "a");
if (AOP_SIZE (result) > 1)
- aopPut (AOP (result), "a", offset++);
+ aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
}
}
/* now we need to put the carry into the
}
emitcode ("mov", "acc.0,c");
release:
- aopPut (AOP (result), "a", 0);
+ aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
freeAsmop (left, NULL, ic, TRUE);
freeAsmop (result, NULL, ic, TRUE);
}
genGetHbit (iCode * ic)
{
operand *left, *result;
+
+ D(emitcode ("; genGetHbit",""));
+
left = IC_LEFT (ic);
result = IC_RESULT (ic);
aopOp (left, ic, FALSE);
freeAsmop (result, 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 (AOP (left), 0, FALSE, FALSE));
+ emitcode ("swap", "a");
+ aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
+ break;
+ case 2: /* swap bytes in word */
+ if (AOP_TYPE(left) == AOP_REG && sameRegs(AOP(left), AOP(result)))
+ {
+ MOVA (aopGet (AOP (left), 0, FALSE, FALSE));
+ aopPut (AOP (result), aopGet (AOP (left), 1, FALSE, FALSE),
+ 0, isOperandVolatile (result, FALSE));
+ aopPut (AOP (result), "a", 1, isOperandVolatile (result, FALSE));
+ }
+ else if (operandsEqu (left, result))
+ {
+ char * reg = "a";
+ MOVA (aopGet (AOP (left), 0, FALSE, FALSE));
+ if (aopGetUsesAcc(AOP (left), 1) || aopGetUsesAcc(AOP (result), 0))
+ {
+ emitcode ("mov", "b,a");
+ reg = "b";
+ }
+ aopPut (AOP (result), aopGet (AOP (left), 1, FALSE, FALSE),
+ 0, isOperandVolatile (result, FALSE));
+ aopPut (AOP (result), reg, 1, isOperandVolatile (result, FALSE));
+ }
+ else
+ {
+ aopPut (AOP (result), aopGet (AOP (left), 1, FALSE, FALSE),
+ 0, isOperandVolatile (result, FALSE));
+ aopPut (AOP (result), aopGet (AOP (left), 0, FALSE, FALSE),
+ 1, isOperandVolatile (result, FALSE));
+ }
+ break;
+ default:
+ wassertl(FALSE, "unsupported SWAP operand size");
+ }
+
+ freeAsmop (left, NULL, ic, TRUE);
+ freeAsmop (result, NULL, ic, TRUE);
+}
+
+
/*-----------------------------------------------------------------*/
/* AccRol - rotate left accumulator by known count */
/*-----------------------------------------------------------------*/
AccSRsh (shCount);
else
AccRsh (shCount);
- aopPut (AOP (result), "a", offr);
+ aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE));
}
/*-----------------------------------------------------------------*/
MOVA (l);
/* shift left accumulator */
AccLsh (shCount);
- aopPut (AOP (result), "a", offr);
+ aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE));
}
/*-----------------------------------------------------------------*/
if (*l == '@' && (IS_AOP_PREG (result)))
{
emitcode ("mov", "a,%s", l);
- aopPut (AOP (result), "a", offr);
+ aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE));
}
else
{
if (!sign)
- aopPut (AOP (result), l, offr);
+ 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);
+ aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE));
}
}
}
emitcode ("mov", "c,acc.7");
AccAXLrl1 (x); // ABBBBBBC:CDDDDDDA
+ emitcode ("mov", "c,acc.7");
AccAXLrl1 (x); // BBBBBBCC:DDDDDDAA
emitcode ("xch", "a,%s", x); // DDDDDDAA:BBBBBBCC
emitcode ("mov", "c,acc.7");
AccAXLrl1 (x); // ABBBBBBC:CDDDDDDA
+ emitcode ("mov", "c,acc.7");
AccAXLrl1 (x); // BBBBBBCC:DDDDDDAA
emitcode ("xch", "a,%s", x); // DDDDDDAA:BBBBBBCC
}
/* ax << shCount (x = lsb(result)) */
AccAXLsh (aopGet (AOP (result), offr, FALSE, FALSE), shCount);
- aopPut (AOP (result), "a", offr + MSB16);
+ aopPut (AOP (result), "a", offr + MSB16, isOperandVolatile (result, FALSE));
}
else
AccAXRsh (aopGet (AOP (result), offr, FALSE, FALSE), shCount);
if (getDataSize (result) > 1)
- aopPut (AOP (result), "a", offr + MSB16);
+ aopPut (AOP (result), "a", offr + MSB16, isOperandVolatile (result, FALSE));
}
/*-----------------------------------------------------------------*/
/* or with result */
emitcode ("orl", "a,%s", aopGet (AOP (result), offr, FALSE, FALSE));
/* back to result */
- aopPut (AOP (result), "a", offr);
+ aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE));
}
/*-----------------------------------------------------------------*/
/* or with result */
emitcode ("orl", "a,%s", aopGet (AOP (result), offr, FALSE, FALSE));
/* back to result */
- aopPut (AOP (result), "a", offr);
+ aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE));
}
/*-----------------------------------------------------------------*/
static void
genlshOne (operand * result, operand * left, int shCount)
{
+ D(emitcode ("; genlshOne",""));
+
shiftL1Left2Result (left, LSB, result, LSB, shCount);
}
{
int size;
+ D(emitcode ("; genlshTwo",""));
+
size = getDataSize (result);
/* if shCount >= 8 */
else
movLeft2Result (left, LSB, result, MSB16, 0);
}
- aopPut (AOP (result), zero, LSB);
+ aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE));
}
/* 1 <= shCount <= 7 */
emitcode ("xch", "a,%s",
aopGet (AOP (left), LSB + offr, FALSE, FALSE));
else
- aopPut (AOP (result), "a", LSB + offr);
+ aopPut (AOP (result), "a", LSB + offr, isOperandVolatile (result, FALSE));
}
if (size >= MSB16 + offr)
emitcode ("xch", "a,%s",
aopGet (AOP (left), MSB16 + offr, FALSE, FALSE));
else
- aopPut (AOP (result), "a", MSB16 + offr);
+ aopPut (AOP (result), "a", MSB16 + offr, isOperandVolatile (result, FALSE));
}
if (size >= MSB24 + offr)
emitcode ("xch", "a,%s",
aopGet (AOP (left), MSB24 + offr, FALSE, FALSE));
else
- aopPut (AOP (result), "a", MSB24 + offr);
+ aopPut (AOP (result), "a", MSB24 + offr, isOperandVolatile (result, FALSE));
}
if (size > MSB32 + offr)
MOVA (l);
}
emitcode ("rlc", "a");
- aopPut (AOP (result), "a", MSB32 + offr);
+ aopPut (AOP (result), "a", MSB32 + offr, isOperandVolatile (result, FALSE));
}
if (offr != LSB)
- aopPut (AOP (result), zero, LSB);
+ aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE));
}
/*-----------------------------------------------------------------*/
{
int size;
+ D(emitcode ("; genlshFour",""));
+
size = AOP_SIZE (result);
/* if shifting more that 3 bytes */
shiftL1Left2Result (left, LSB, result, MSB32, shCount);
else
movLeft2Result (left, LSB, result, MSB32, 0);
- aopPut (AOP (result), zero, LSB);
- aopPut (AOP (result), zero, MSB16);
- aopPut (AOP (result), zero, MSB24);
+ aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE));
+ aopPut (AOP (result), zero, MSB16, isOperandVolatile (result, FALSE));
+ aopPut (AOP (result), zero, MSB24, isOperandVolatile (result, FALSE));
return;
}
movLeft2Result (left, MSB16, result, MSB32, 0);
movLeft2Result (left, LSB, result, MSB24, 0);
}
- aopPut (AOP (result), zero, MSB16);
- aopPut (AOP (result), zero, LSB);
+ aopPut (AOP (result), zero, MSB16, isOperandVolatile (result, FALSE));
+ aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE));
return;
}
movLeft2Result (left, MSB24, result, MSB32, 0);
movLeft2Result (left, MSB16, result, MSB24, 0);
movLeft2Result (left, LSB, result, MSB16, 0);
- aopPut (AOP (result), zero, LSB);
+ aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE));
}
else if (shCount == 1)
shiftLLong (left, result, MSB16);
shiftL2Left2Result (left, MSB16, result, MSB24, shCount);
shiftL1Left2Result (left, LSB, result, MSB16, shCount);
shiftRLeftOrResult (left, LSB, result, MSB24, 8 - shCount);
- aopPut (AOP (result), zero, LSB);
+ aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE));
}
}
}
int shCount = (int) floatFromVal (AOP (right)->aopu.aop_lit);
int size;
+ D(emitcode ("; genLeftShiftLiteral",""));
+
freeAsmop (right, NULL, ic, TRUE);
aopOp (left, ic, FALSE);
else if (shCount >= (size * 8))
while (size--)
- aopPut (AOP (result), zero, size);
+ aopPut (AOP (result), zero, size, isOperandVolatile (result, FALSE));
else
{
switch (size)
genlshFour (result, left, shCount);
break;
default:
- fprintf(stderr, "*** ack! mystery literal shift!\n");
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "*** ack! mystery literal shift!\n");
break;
}
}
char *l;
symbol *tlbl, *tlbl1;
+ D(emitcode ("; genLeftShift",""));
+
right = IC_RIGHT (ic);
left = IC_LEFT (ic);
result = IC_RESULT (ic);
{
emitcode ("mov", "a,%s", l);
- aopPut (AOP (result), "a", offset);
+ aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
}
else
- aopPut (AOP (result), l, offset);
+ aopPut (AOP (result), l, offset, isOperandVolatile (result, FALSE));
offset++;
}
}
emitcode ("add", "a,acc");
emitcode ("", "%05d$:", tlbl1->key + 100);
emitcode ("djnz", "b,%05d$", tlbl->key + 100);
- aopPut (AOP (result), "a", 0);
+ aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
goto release;
}
l = aopGet (AOP (result), offset, FALSE, FALSE);
MOVA (l);
emitcode ("add", "a,acc");
- aopPut (AOP (result), "a", offset++);
+ aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
while (--size)
{
l = aopGet (AOP (result), offset, FALSE, FALSE);
MOVA (l);
emitcode ("rlc", "a");
- aopPut (AOP (result), "a", offset++);
+ aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
}
reAdjustPreg (AOP (result));
genrshOne (operand * result, operand * left,
int shCount, int sign)
{
+ D(emitcode ("; genrshOne",""));
+
shiftR1Left2Result (left, LSB, result, LSB, shCount, sign);
}
genrshTwo (operand * result, operand * left,
int shCount, int sign)
{
+ D(emitcode ("; genrshTwo",""));
+
/* if shCount >= 8 */
if (shCount >= 8)
{
if (sign) {
emitcode ("rlc", "a");
emitcode ("subb", "a,acc");
- emitcode ("xch", "a,%s", aopGet(AOP(left), MSB32, FALSE, FALSE));
+ 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);
+ aopPut (AOP(result), zero, MSB32, isOperandVolatile (result, FALSE));
}
}
if (isSameRegs && offl==MSB16) {
emitcode ("xch", "a,%s",aopGet (AOP (left), MSB24, FALSE, FALSE));
} else {
- aopPut (AOP (result), "a", MSB32);
+ aopPut (AOP (result), "a", MSB32-offl, isOperandVolatile (result, FALSE));
MOVA (aopGet (AOP (left), MSB24, FALSE, FALSE));
}
if (isSameRegs && offl==1) {
emitcode ("xch", "a,%s",aopGet (AOP (left), MSB16, FALSE, FALSE));
} else {
- aopPut (AOP (result), "a", MSB24);
+ 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);
+ aopPut (AOP (result), "a", MSB16 - offl, isOperandVolatile (result, FALSE));
if (offl == LSB)
{
MOVA (aopGet (AOP (left), LSB, FALSE, FALSE));
emitcode ("rrc", "a");
- aopPut (AOP (result), "a", LSB);
+ aopPut (AOP (result), "a", LSB, isOperandVolatile (result, FALSE));
}
}
genrshFour (operand * result, operand * left,
int shCount, int sign)
{
+ D(emitcode ("; genrshFour",""));
+
/* if shifting more that 3 bytes */
if (shCount >= 24)
{
int shCount = (int) floatFromVal (AOP (right)->aopu.aop_lit);
int size;
+ D(emitcode ("; genRightShiftLiteral",""));
+
freeAsmop (right, NULL, ic, TRUE);
aopOp (left, ic, FALSE);
else if (shCount >= (size * 8))
{
- if (sign)
+ if (sign) {
/* get sign in acc.7 */
MOVA (aopGet (AOP (left), size - 1, FALSE, FALSE));
+ }
addSign (result, LSB, sign);
}
else
default:
break;
}
-
- freeAsmop (left, NULL, ic, TRUE);
- freeAsmop (result, NULL, ic, TRUE);
}
+ freeAsmop (left, NULL, ic, TRUE);
+ freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
char *l;
symbol *tlbl, *tlbl1;
+ D(emitcode ("; genSignedRightShift",""));
+
/* we do it the hard way put the shift count in b
and loop thru preserving the sign */
{
emitcode ("mov", "a,%s", l);
- aopPut (AOP (result), "a", offset);
+ aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
}
else
- aopPut (AOP (result), l, offset);
+ aopPut (AOP (result), l, offset, isOperandVolatile (result, FALSE));
offset++;
}
}
emitcode ("rrc", "a");
emitcode ("", "%05d$:", tlbl1->key + 100);
emitcode ("djnz", "b,%05d$", tlbl->key + 100);
- aopPut (AOP (result), "a", 0);
+ aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
goto release;
}
l = aopGet (AOP (result), offset, FALSE, FALSE);
MOVA (l);
emitcode ("rrc", "a");
- aopPut (AOP (result), "a", offset--);
+ aopPut (AOP (result), "a", offset--, isOperandVolatile (result, FALSE));
}
reAdjustPreg (AOP (result));
emitcode ("", "%05d$:", tlbl1->key + 100);
genRightShift (iCode * ic)
{
operand *right, *left, *result;
- sym_link *retype;
+ sym_link *letype;
int size, offset;
char *l;
symbol *tlbl, *tlbl1;
+ 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;
{
emitcode ("mov", "a,%s", l);
- aopPut (AOP (result), "a", offset);
+ aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
}
else
- aopPut (AOP (result), l, offset);
+ aopPut (AOP (result), l, offset, isOperandVolatile (result, FALSE));
offset++;
}
}
emitcode ("rrc", "a");
emitcode ("", "%05d$:", tlbl1->key + 100);
emitcode ("djnz", "b,%05d$", tlbl->key + 100);
- aopPut (AOP (result), "a", 0);
+ aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
goto release;
}
l = aopGet (AOP (result), offset, FALSE, FALSE);
MOVA (l);
emitcode ("rrc", "a");
- aopPut (AOP (result), "a", offset--);
+ aopPut (AOP (result), "a", offset--, isOperandVolatile (result, FALSE));
}
reAdjustPreg (AOP (result));
}
/*-----------------------------------------------------------------*/
-/* genUnpackBits - generates code for unpacking bits */
+/* emitPtrByteGet - emits code to get a byte into A through a */
+/* pointer register (R0, R1, or DPTR). The */
+/* original value of A can be preserved in B. */
/*-----------------------------------------------------------------*/
static void
-genUnpackBits (operand * result, char *rname, int ptype)
+emitPtrByteGet (char *rname, int p_type, bool preserveAinB)
{
- int shCnt;
- int rlen = 0;
- sym_link *etype;
- int offset = 0;
- int rsize;
-
- etype = getSpec (operandType (result));
- rsize = getSize (operandType (result));
- /* read the first byte */
- switch (ptype)
+ switch (p_type)
{
-
- case POINTER:
case IPOINTER:
+ case POINTER:
+ if (preserveAinB)
+ emitcode ("mov", "b,a");
emitcode ("mov", "a,@%s", rname);
break;
case PPOINTER:
+ if (preserveAinB)
+ emitcode ("mov", "b,a");
emitcode ("movx", "a,@%s", rname);
break;
-
+
case FPOINTER:
+ if (preserveAinB)
+ emitcode ("mov", "b,a");
emitcode ("movx", "a,@dptr");
break;
case CPOINTER:
+ if (preserveAinB)
+ emitcode ("mov", "b,a");
emitcode ("clr", "a");
emitcode ("movc", "a,@a+dptr");
break;
case GPOINTER:
+ if (preserveAinB)
+ {
+ emitcode ("push", "b");
+ emitcode ("push", "acc");
+ }
emitcode ("lcall", "__gptrget");
+ if (preserveAinB)
+ emitcode ("pop", "b");
break;
}
+}
- rlen = SPEC_BLEN (etype);
-
- /* if we have bitdisplacement then it fits */
- /* into this byte completely or if length is */
- /* less than a byte */
- if ((shCnt = SPEC_BSTR (etype)) ||
- (SPEC_BLEN (etype) <= 8))
+/*-----------------------------------------------------------------*/
+/* emitPtrByteSet - emits code to set a byte from src through a */
+/* pointer register (R0, R1, or DPTR). */
+/*-----------------------------------------------------------------*/
+static void
+emitPtrByteSet (char *rname, int p_type, char *src)
+{
+ switch (p_type)
{
+ case IPOINTER:
+ case POINTER:
+ if (*src=='@')
+ {
+ MOVA (src);
+ emitcode ("mov", "@%s,a", rname);
+ }
+ else
+ emitcode ("mov", "@%s,%s", rname, src);
+ break;
- /* shift right acc */
- AccRsh (shCnt);
-
- emitcode ("anl", "a,#0x%02x",
- ((unsigned char) -1) >> (8 - SPEC_BLEN (etype)));
- aopPut (AOP (result), "a", offset++);
- goto finish;
- }
-
- /* bit field did not fit in a byte */
- aopPut (AOP (result), "a", offset++);
-
- while (1)
- {
-
- switch (ptype)
- {
- case POINTER:
- case IPOINTER:
- emitcode ("inc", "%s", rname);
- emitcode ("mov", "a,@%s", rname);
- break;
-
- case PPOINTER:
- emitcode ("inc", "%s", rname);
- emitcode ("movx", "a,@%s", rname);
- break;
+ case PPOINTER:
+ MOVA (src);
+ emitcode ("movx", "@%s,a", rname);
+ break;
+
+ case FPOINTER:
+ MOVA (src);
+ emitcode ("movx", "@dptr,a");
+ break;
- case FPOINTER:
- emitcode ("inc", "dptr");
- emitcode ("movx", "a,@dptr");
- break;
+ case GPOINTER:
+ MOVA (src);
+ emitcode ("lcall", "__gptrput");
+ break;
+ }
+}
- case CPOINTER:
- emitcode ("clr", "a");
- emitcode ("inc", "dptr");
- emitcode ("movc", "a,@a+dptr");
- break;
+/*-----------------------------------------------------------------*/
+/* 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 */
- case GPOINTER:
- emitcode ("inc", "dptr");
- emitcode ("lcall", "__gptrget");
- break;
- }
+ D(emitcode ("; genUnpackBits",""));
- rlen -= 8;
- /* if we are done */
- if (rlen < 8)
- break;
+ etype = getSpec (operandType (result));
+ rsize = getSize (operandType (result));
+ blen = SPEC_BLEN (etype);
+ bstr = SPEC_BSTR (etype);
- aopPut (AOP (result), "a", offset++);
+ /* If the bitfield length is less than a byte */
+ if (blen < 8)
+ {
+ emitPtrByteGet (rname, ptype, FALSE);
+ AccRsh (bstr);
+ emitcode ("anl", "a,#0x%02x", ((unsigned char) -1) >> (8 - blen));
+ aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
+ goto finish;
+ }
+ /* Bit field did not fit in a byte. Copy all
+ but the partial byte at the end. */
+ for (rlen=blen;rlen>=8;rlen-=8)
+ {
+ emitPtrByteGet (rname, ptype, FALSE);
+ aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
+ if (rlen>8)
+ emitcode ("inc", "%s", rname);
}
+ /* Handle the partial byte at the end */
if (rlen)
{
- // emitcode("anl","a,#0x%02x",((unsigned char)-1)>>(rlen));
- AccLsh (8 - rlen);
- aopPut (AOP (result), "a", offset++);
+ emitPtrByteGet (rname, ptype, FALSE);
+ emitcode ("anl", "a,#0x%02x", ((unsigned char) -1) >> (8-rlen));
+ aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
}
finish:
{
rsize -= offset;
while (rsize--)
- aopPut (AOP (result), zero, offset++);
+ aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE));
}
- return;
}
char *l;
char buffer[256];
int size, offset = 0;
+
+ D(emitcode ("; genDataPointerGet",""));
+
aopOp (result, ic, TRUE);
/* get the string representation of the name */
sprintf (buffer, "(%s + %d)", l + 1, offset);
else
sprintf (buffer, "%s", l + 1);
- aopPut (AOP (result), buffer, offset++);
+ aopPut (AOP (result), buffer, offset++, isOperandVolatile (result, FALSE));
}
freeAsmop (left, NULL, ic, TRUE);
sym_link *ltype = operandType (left);
char buffer[80];
+ D(emitcode ("; genNearPointerGet",""));
+
rtype = operandType (result);
retype = getSpec (rtype);
return;
}
- /* if the value is already in a pointer register
+ /* if the value is already in a pointer register
then don't need anything more */
if (!AOP_INPREG (AOP (left)))
{
- /* 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;
+ 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 '@'.
+ }
+ }
+ 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;
+ }
}
else
rname = aopGet (AOP (left), 0, FALSE, FALSE);
-
+
//aopOp (result, ic, FALSE);
aopOp (result, ic, result?TRUE:FALSE);
{
emitcode ("mov", "a,@%s", rname);
- aopPut (AOP (result), "a", offset);
+ aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
}
else
{
sprintf (buffer, "@%s", rname);
- aopPut (AOP (result), buffer, offset);
+ aopPut (AOP (result), buffer, offset, isOperandVolatile (result, FALSE));
}
offset++;
if (size || pi)
if (aop) /* we had to allocate for this iCode */
{
if (pi) { /* post increment present */
- aopPut(AOP ( left ),rname,0);
+ aopPut(AOP ( left ),rname,0, isOperandVolatile (left, FALSE));
}
- freeAsmop (NULL, aop, ic, TRUE);
+ freeAsmop (NULL, aop, ic, RESULTONSTACK (ic) ? FALSE : TRUE);
}
else
{
}
/* done */
+ freeAsmop (result, NULL, ic, RESULTONSTACK (ic) ? FALSE : TRUE);
freeAsmop (left, NULL, ic, TRUE);
- freeAsmop (result, NULL, ic, TRUE);
if (pi) pi->generated = 1;
}
char *rname;
sym_link *rtype, *retype;
+ D(emitcode ("; genPagedPointerGet",""));
+
rtype = operandType (result);
retype = getSpec (rtype);
{
emitcode ("movx", "a,@%s", rname);
- aopPut (AOP (result), "a", offset);
+ aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE));
offset++;
/* now some housekeeping stuff */
if (aop) /* we had to allocate for this iCode */
{
- if (pi) aopPut ( AOP (left), rname, 0);
+ if (pi) aopPut ( AOP (left), rname, 0, isOperandVolatile (left, FALSE));
freeAsmop (NULL, aop, ic, TRUE);
}
else
}
+/*--------------------------------------------------------------------*/
+/* 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 remateriazable */
+ if (AOP_TYPE (op) == AOP_IMMD)
+ {
+ emitcode ("mov", "dptr,%s", aopGet (AOP (op), 0, TRUE, FALSE));
+ if (loadBToo)
+ {
+ if (AOP(op)->aopu.aop_immd.from_cast_remat)
+ emitcode ("mov", "b,%s",aopGet(AOP (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 (AOP (result), 0, TRUE, FALSE));
+ */
+ }
+ }
+ }
+ else if (AOP_TYPE (op) == AOP_DPTR)
+ {
+ if (loadBToo)
+ {
+ MOVA (aopGet (AOP (op), 0, FALSE, FALSE));
+ emitcode ("push", "acc");
+ MOVA (aopGet (AOP (op), 1, FALSE, FALSE));
+ emitcode ("push", "acc");
+ emitcode ("mov", "b,%s", aopGet (AOP (op), 2, FALSE, FALSE));
+ emitcode ("pop", "dph");
+ emitcode ("pop", "dpl");
+ }
+ else
+ {
+ MOVA (aopGet (AOP (op), 0, FALSE, FALSE));
+ emitcode ("push", "acc");
+ emitcode ("mov", "dph,%s", aopGet (AOP (op), 1, FALSE, FALSE));
+ emitcode ("pop", "dpl");
+ }
+ }
+ else
+ { /* we need to get it byte by byte */
+ emitcode ("mov", "dpl,%s", aopGet (AOP (op), 0, FALSE, FALSE));
+ emitcode ("mov", "dph,%s", aopGet (AOP (op), 1, FALSE, FALSE));
+ if (loadBToo)
+ emitcode ("mov", "b,%s", aopGet (AOP (op), 2, FALSE, FALSE));
+ }
+ }
+}
+
/*-----------------------------------------------------------------*/
/* genFarPointerGet - gget value from far space */
/*-----------------------------------------------------------------*/
int size, offset;
sym_link *retype = getSpec (operandType (result));
- aopOp (left, ic, FALSE);
+ D(emitcode ("; genFarPointerGet",""));
- /* 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 */
+ aopOp (left, ic, FALSE);
+ loadDptrFromOperand (left, FALSE);
+
+ /* so dptr now contains the address */
aopOp (result, ic, FALSE);
/* if bit then unpack */
while (size--)
{
emitcode ("movx", "a,@dptr");
- aopPut (AOP (result), "a", offset++);
+ 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);
- aopPut ( AOP (left), "dph", 1);
+ aopPut ( AOP (left), "dpl", 0, isOperandVolatile (left, FALSE));
+ aopPut ( AOP (left), "dph", 1, isOperandVolatile (left, FALSE));
pi->generated = 1;
}
freeAsmop (left, NULL, ic, TRUE);
int size, offset;
sym_link *retype = getSpec (operandType (result));
- aopOp (left, ic, FALSE);
+ D(emitcode ("; genCodePointerGet",""));
- /* 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 */
+ aopOp (left, ic, FALSE);
+ loadDptrFromOperand (left, FALSE);
+
+ /* so dptr now contains the address */
aopOp (result, ic, FALSE);
/* if bit then unpack */
while (size--)
{
- emitcode ("clr", "a");
- emitcode ("movc", "a,@a+dptr");
- aopPut (AOP (result), "a", offset++);
- if (size || pi)
- emitcode ("inc", "dptr");
+ 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);
- aopPut ( AOP (left), "dph", 1);
+ aopPut ( AOP (left), "dpl", 0, isOperandVolatile (left, FALSE));
+ aopPut ( AOP (left), "dph", 1, isOperandVolatile (left, FALSE));
pi->generated = 1;
}
freeAsmop (left, NULL, ic, TRUE);
int size, offset;
sym_link *retype = getSpec (operandType (result));
- aopOp (left, ic, FALSE);
+ D(emitcode ("; genGenPointerGet",""));
- /* 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));
- 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));
- }
- }
+ aopOp (left, ic, FALSE);
+ loadDptrFromOperand (left, TRUE);
+
/* so dptr know contains the address */
aopOp (result, ic, FALSE);
while (size--)
{
emitcode ("lcall", "__gptrget");
- aopPut (AOP (result), "a", offset++);
+ 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);
- aopPut ( AOP (left), "dph", 1);
+ aopPut ( AOP (left), "dpl", 0, isOperandVolatile (left, FALSE));
+ aopPut ( AOP (left), "dph", 1, isOperandVolatile (left, FALSE));
pi->generated = 1;
}
freeAsmop (left, NULL, ic, TRUE);
sym_link *type, *etype;
int p_type;
+ D(emitcode ("; genPointerGet",""));
+
left = IC_LEFT (ic);
result = IC_RESULT (ic);
p_type = PTR_TYPE (SPEC_OCLS (etype));
}
+ /* 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);
+ }
/* now that we have the pointer type we assign
the pointer values */
switch (p_type)
}
+
+
/*-----------------------------------------------------------------*/
/* genPackBits - generates code for packed bit storage */
/*-----------------------------------------------------------------*/
operand * right,
char *rname, int p_type)
{
- int shCount = 0;
- int offset = 0;
- int rLen = 0;
- int blen, bstr;
- char *l;
+ 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",""));
blen = SPEC_BLEN (etype);
bstr = SPEC_BSTR (etype);
- l = aopGet (AOP (right), offset++, FALSE, FALSE);
- MOVA (l);
-
- /* if the bit lenth is less than or */
- /* it exactly fits a byte then */
- if (SPEC_BLEN (etype) <= 8)
+ /* If the bitfield length is less than a byte */
+ if (blen < 8)
{
- shCount = SPEC_BSTR (etype);
-
- /* shift left acc */
- AccLsh (shCount);
+ mask = ((unsigned char) (0xFF << (blen + bstr)) |
+ (unsigned char) (0xFF >> (8 - bstr)));
- if (SPEC_BLEN (etype) < 8)
- { /* if smaller than a byte */
-
-
- switch (p_type)
- {
- case POINTER:
- emitcode ("mov", "b,a");
- emitcode ("mov", "a,@%s", rname);
- break;
-
- case FPOINTER:
- emitcode ("mov", "b,a");
- emitcode ("movx", "a,@dptr");
- break;
-
- case GPOINTER:
- emitcode ("push", "b");
- emitcode ("push", "acc");
- emitcode ("lcall", "__gptrget");
- emitcode ("pop", "b");
- break;
- }
-
- emitcode ("anl", "a,#0x%02x", (unsigned char)
- ((unsigned char) (0xFF << (blen + bstr)) |
- (unsigned char) (0xFF >> (8 - bstr))));
- emitcode ("orl", "a,b");
- if (p_type == GPOINTER)
- emitcode ("pop", "b");
- }
- }
-
- switch (p_type)
- {
- case POINTER:
- emitcode ("mov", "@%s,a", rname);
- break;
-
- case FPOINTER:
- emitcode ("movx", "@dptr,a");
- break;
-
- case GPOINTER:
- emitcode ("lcall", "__gptrput");
- break;
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ /* Case with a bitfield length <8 and literal source
+ */
+ litval = (int) floatFromVal (AOP (right)->aopu.aop_lit);
+ litval <<= bstr;
+ litval &= (~mask) & 0xff;
+ emitPtrByteGet (rname, p_type, FALSE);
+ if ((mask|litval)!=0xff)
+ emitcode ("anl","a,#0x%02x", mask);
+ if (litval)
+ emitcode ("orl","a,#0x%02x", litval);
+ }
+ else
+ {
+ if ((blen==1) && (p_type!=GPOINTER))
+ {
+ /* Case with a bitfield length == 1 and no generic pointer
+ */
+ if (AOP_TYPE (right) == AOP_CRY)
+ emitcode ("mov", "c,%s", AOP(right)->aopu.aop_dir);
+ else
+ {
+ MOVA (aopGet (AOP (right), 0, FALSE, FALSE));
+ emitcode ("rrc","a");
+ }
+ emitPtrByteGet (rname, p_type, FALSE);
+ emitcode ("mov","acc.%d,c",bstr);
+ }
+ else
+ {
+ /* Case with a bitfield length < 8 and arbitrary source
+ */
+ MOVA (aopGet (AOP (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 */
+ emitPtrByteGet (rname, p_type, TRUE);
+
+ emitcode ("anl", "a,#0x%02x", mask);
+ emitcode ("orl", "a,b");
+ if (p_type == GPOINTER)
+ emitcode ("pop", "b");
+ }
+ }
+
+ emitPtrByteSet (rname, p_type, "a");
+ return;
}
- /* if we r done */
- if (SPEC_BLEN (etype) <= 8)
- return;
-
- emitcode ("inc", "%s", rname);
- rLen = SPEC_BLEN (etype);
-
- /* now generate for lengths greater than one byte */
- while (1)
+ /* Bit length is greater than 7 bits. In this case, copy */
+ /* all except the partial byte at the end */
+ for (rlen=blen;rlen>=8;rlen-=8)
{
-
- l = aopGet (AOP (right), offset++, FALSE, TRUE);
-
- rLen -= 8;
- if (rLen < 8)
- break;
-
- switch (p_type)
- {
- case POINTER:
- if (*l == '@')
- {
- MOVA (l);
- emitcode ("mov", "@%s,a", rname);
- }
- else
- emitcode ("mov", "@%s,%s", rname, l);
- break;
-
- case FPOINTER:
- MOVA (l);
- emitcode ("movx", "@dptr,a");
- break;
-
- case GPOINTER:
- MOVA (l);
- emitcode ("lcall", "__gptrput");
- break;
- }
- emitcode ("inc", "%s", rname);
+ emitPtrByteSet (rname, p_type,
+ aopGet (AOP (right), offset++, FALSE, TRUE) );
+ if (rlen>8)
+ emitcode ("inc", "%s", rname);
}
- MOVA (l);
-
- /* last last was not complete */
- if (rLen)
+ /* If there was a partial byte at the end */
+ if (rlen)
{
- /* save the byte & read byte */
- switch (p_type)
- {
- case POINTER:
- emitcode ("mov", "b,a");
- emitcode ("mov", "a,@%s", rname);
- break;
-
- case FPOINTER:
- emitcode ("mov", "b,a");
- emitcode ("movx", "a,@dptr");
- break;
+ mask = (((unsigned char) -1 << rlen) & 0xff);
+
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ /* Case with partial byte and literal source
+ */
+ litval = (int) floatFromVal (AOP (right)->aopu.aop_lit);
+ litval >>= (blen-rlen);
+ litval &= (~mask) & 0xff;
+ emitPtrByteGet (rname, p_type, FALSE);
+ if ((mask|litval)!=0xff)
+ emitcode ("anl","a,#0x%02x", mask);
+ if (litval)
+ emitcode ("orl","a,#0x%02x", litval);
+ }
+ else
+ {
+ /* Case with partial byte and arbitrary source
+ */
+ MOVA (aopGet (AOP (right), offset++, FALSE, FALSE));
+ emitcode ("anl", "a,#0x%02x", (~mask) & 0xff);
- case GPOINTER:
- emitcode ("push", "b");
- emitcode ("push", "acc");
- emitcode ("lcall", "__gptrget");
- emitcode ("pop", "b");
- break;
- }
+ /* transfer A to B and get next byte */
+ emitPtrByteGet (rname, p_type, TRUE);
- emitcode ("anl", "a,#0x%02x", (((unsigned char) -1 << rLen) & 0xff));
- emitcode ("orl", "a,b");
+ emitcode ("anl", "a,#0x%02x", mask);
+ emitcode ("orl", "a,b");
+ if (p_type == GPOINTER)
+ emitcode ("pop", "b");
+ }
+ emitPtrByteSet (rname, p_type, "a");
}
- if (p_type == GPOINTER)
- emitcode ("pop", "b");
-
- switch (p_type)
- {
-
- case POINTER:
- emitcode ("mov", "@%s,a", rname);
- break;
+}
- case FPOINTER:
- emitcode ("movx", "@dptr,a");
- break;
- case GPOINTER:
- emitcode ("lcall", "__gptrput");
- break;
- }
-}
/*-----------------------------------------------------------------*/
/* genDataPointerSet - remat pointer to data space */
/*-----------------------------------------------------------------*/
int size, offset = 0;
char *l, buffer[256];
+ D(emitcode ("; genDataPointerSet",""));
+
aopOp (right, ic, FALSE);
l = aopGet (AOP (result), 0, FALSE, TRUE);
sym_link *retype, *letype;
sym_link *ptype = operandType (result);
+ D(emitcode ("; genNearPointerSet",""));
+
retype = getSpec (operandType (right));
letype = getSpec (ptype);
aopOp (result, ic, FALSE);
genDataPointerSet (right, result, ic);
return;
}
-
+
/* if the value is already in a pointer register
then don't need anything more */
if (!AOP_INPREG (AOP (result)))
{
- /* 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 (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;
+ }
+ }
+ else
+ {
+ rname = aopGet (AOP (result), 0, FALSE, FALSE);
}
- else
- rname = aopGet (AOP (result), 0, FALSE, FALSE);
aopOp (right, ic, FALSE);
/* now some housekeeping stuff */
if (aop) /* we had to allocate for this iCode */
{
- if (pi) aopPut (AOP (result),rname,0);
+ if (pi)
+ aopPut (AOP (result), rname, 0, isOperandVolatile (result, FALSE));
freeAsmop (NULL, aop, ic, TRUE);
}
else
char *rname, *l;
sym_link *retype, *letype;
+ D(emitcode ("; genPagedPointerSet",""));
+
retype = getSpec (operandType (right));
letype = getSpec (operandType (result));
/* now some housekeeping stuff */
if (aop) /* we had to allocate for this iCode */
{
- if (pi) aopPut (AOP (result),rname,0);
+ if (pi)
+ aopPut (AOP (result), rname, 0, isOperandVolatile (result, FALSE));
freeAsmop (NULL, aop, ic, TRUE);
}
else
int size, offset;
sym_link *retype = getSpec (operandType (right));
sym_link *letype = getSpec (operandType (result));
- aopOp (result, ic, 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));
- }
- }
+ D(emitcode ("; genFarPointerSet",""));
+
+ aopOp (result, ic, FALSE);
+ loadDptrFromOperand (result, FALSE);
+
/* so dptr know contains the address */
aopOp (right, ic, FALSE);
}
}
if (pi && AOP_TYPE (result) != AOP_STR && AOP_TYPE (result) != AOP_IMMD) {
- aopPut (AOP(result),"dpl",0);
- aopPut (AOP(result),"dph",1);
+ aopPut (AOP(result), "dpl", 0, isOperandVolatile (result, FALSE));
+ aopPut (AOP(result), "dph", 1, isOperandVolatile (result, FALSE));
pi->generated=1;
}
freeAsmop (result, NULL, ic, TRUE);
sym_link *retype = getSpec (operandType (right));
sym_link *letype = getSpec (operandType (result));
- aopOp (result, ic, FALSE);
+ D(emitcode ("; genGenPointerSet",""));
- /* 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));
- 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));
- }
- }
+ aopOp (result, ic, FALSE);
+ loadDptrFromOperand (result, TRUE);
+
/* so dptr know contains the address */
aopOp (right, ic, FALSE);
}
if (pi && AOP_TYPE (result) != AOP_STR && AOP_TYPE (result) != AOP_IMMD) {
- aopPut (AOP(result),"dpl",0);
- aopPut (AOP(result),"dph",1);
+ aopPut (AOP(result), "dpl", 0, isOperandVolatile (result, FALSE));
+ aopPut (AOP(result), "dph", 1, isOperandVolatile (result, FALSE));
pi->generated=1;
}
freeAsmop (result, NULL, ic, TRUE);
sym_link *type, *etype;
int p_type;
+ D(emitcode ("; genPointerSet",""));
+
right = IC_RIGHT (ic);
result = IC_RESULT (ic);
p_type = PTR_TYPE (SPEC_OCLS (etype));
}
+ /* 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);
+ }
/* now that we have the pointer type we assign
the pointer values */
switch (p_type)
case GPOINTER:
genGenPointerSet (right, result, ic, pi);
break;
+
+ default:
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "genPointerSet: illegal pointer type");
}
}
operand *cond = IC_COND (ic);
int isbit = 0;
+ D(emitcode ("; genIfx",""));
+
aopOp (cond, ic, FALSE);
/* get the value into acc */
symbol *sym = OP_SYMBOL (IC_LEFT (ic));
int size, offset;
+ D(emitcode ("; genAddrOf",""));
+
aopOp (IC_RESULT (ic), ic, FALSE);
/* if the operand is on the stack then we
if (sym->stack)
{
emitcode ("mov", "a,_bp");
- emitcode ("add", "a,#0x%02x", ((char) sym->stack & 0xff));
- aopPut (AOP (IC_RESULT (ic)), "a", 0);
+ 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));
}
else
{
/* we can just move _bp */
- aopPut (AOP (IC_RESULT (ic)), "_bp", 0);
+ aopPut (AOP (IC_RESULT (ic)), "_bp", 0, isOperandVolatile (IC_RESULT (ic), FALSE));
}
/* fill the result with zero */
size = AOP_SIZE (IC_RESULT (ic)) - 1;
offset = 1;
while (size--)
{
- aopPut (AOP (IC_RESULT (ic)), zero, offset++);
+ aopPut (AOP (IC_RESULT (ic)), zero, offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
}
goto release;
offset * 8);
else
sprintf (s, "#%s", sym->rname);
- aopPut (AOP (IC_RESULT (ic)), s, offset++);
+ aopPut (AOP (IC_RESULT (ic)), s, offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
}
release:
int size = AOP_SIZE (right);
int offset = 0;
char *l;
+
+ D(emitcode ("; genFarFarAssign",""));
+
/* first push the right side on to the stack */
while (size--)
{
while (size--)
{
emitcode ("pop", "acc");
- aopPut (AOP (result), "a", --offset);
+ aopPut (AOP (result), "a", --offset, isOperandVolatile (result, FALSE));
}
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);
/* if they are the same */
- if (operandsEqu (IC_RESULT (ic), IC_RIGHT (ic)))
+ if (operandsEqu (result, right) &&
+ !isOperandVolatile (result, FALSE) &&
+ !isOperandVolatile (right, FALSE))
return;
aopOp (right, ic, FALSE);
aopOp (result, ic, TRUE);
/* if they are the same registers */
- if (sameRegs (AOP (right), AOP (result)))
+ if (sameRegs (AOP (right), AOP (result)) &&
+ !isOperandVolatile (result, FALSE) &&
+ !isOperandVolatile (right, FALSE))
goto release;
/* if the result is a bit */
if (AOP_TYPE (right) == AOP_LIT)
{
if (((int) operandLitValue (right)))
- aopPut (AOP (result), one, 0);
+ aopPut (AOP (result), one, 0, isOperandVolatile (result, FALSE));
else
- aopPut (AOP (result), zero, 0);
+ aopPut (AOP (result), zero, 0, isOperandVolatile (result, FALSE));
goto release;
}
if (AOP_TYPE (right) == AOP_CRY)
{
emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
- aopPut (AOP (result), "c", 0);
+ aopPut (AOP (result), "c", 0, isOperandVolatile (result, FALSE));
goto release;
}
/* we need to or */
toBoolean (right);
- aopPut (AOP (result), "a", 0);
+ aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
goto release;
}
while (size--)
{
if ((unsigned int) ((lit >> (size * 8)) & 0x0FFL) == 0)
- aopPut (AOP (result), "a", size);
+ aopPut (AOP (result), "a", size, isOperandVolatile (result, FALSE));
else
aopPut (AOP (result),
aopGet (AOP (right), size, FALSE, FALSE),
- size);
+ size,
+ isOperandVolatile (result, FALSE));
}
}
else
{
aopPut (AOP (result),
aopGet (AOP (right), offset, FALSE, FALSE),
- offset);
+ offset,
+ isOperandVolatile (result, FALSE));
offset++;
}
}
symbol *jtab;
char *l;
+ D(emitcode ("; genJumpTab",""));
+
aopOp (IC_JTCOND (ic), ic, FALSE);
/* get the condition into accumulator */
l = aopGet (AOP (IC_JTCOND (ic)), 0, FALSE, FALSE);
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 (right, ic, FALSE);
aopOp (result, ic, FALSE);
- /* if the result is a bit */
- // if (AOP_TYPE (result) == AOP_CRY /* works only for true symbols */
- if (IS_BITVAR(OP_SYMBOL(result)->type))
+ /* 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 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);
+ aopPut (AOP (result), one, 0, isOperandVolatile (result, FALSE));
else
- aopPut (AOP (result), zero, 0);
+ aopPut (AOP (result), zero, 0, isOperandVolatile (result, FALSE));
goto release;
}
if (AOP_TYPE (right) == AOP_CRY)
{
emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
- aopPut (AOP (result), "c", 0);
+ aopPut (AOP (result), "c", 0, isOperandVolatile (result, FALSE));
goto release;
}
/* we need to or */
toBoolean (right);
- aopPut (AOP (result), "a", 0);
+ aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE));
goto release;
}
+
/* if they are the same size : or less */
if (AOP_SIZE (result) <= AOP_SIZE (right))
{
{
aopPut (AOP (result),
aopGet (AOP (right), offset, FALSE, FALSE),
- offset);
+ offset,
+ isOperandVolatile (result, FALSE));
offset++;
}
goto release;
/* pointer to generic pointer */
if (IS_GENPTR (ctype))
{
- char *l = zero;
-
if (IS_PTR (type))
p_type = DCL_TYPE (type);
else
{
aopPut (AOP (result),
aopGet (AOP (right), offset, FALSE, FALSE),
- offset);
+ offset,
+ isOperandVolatile (result, FALSE));
offset++;
}
/* the last byte depending on type */
- switch (p_type)
{
- case IPOINTER:
- case POINTER:
- l = zero;
- break;
- case FPOINTER:
- l = one;
- break;
- case CPOINTER:
- l = "#0x02";
- break;
- case GPOINTER:
- l = "0x03";
- break;
- case PPOINTER: // what the fck is this?
- l = "#0x03";
- break;
-
- default:
- /* this should never happen */
- werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "got unknown pointer type");
- exit (1);
- }
- aopPut (AOP (result), l, GPTRSIZE - 1);
+ 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;
}
{
aopPut (AOP (result),
aopGet (AOP (right), offset, FALSE, FALSE),
- offset);
+ offset,
+ isOperandVolatile (result, FALSE));
offset++;
}
goto release;
{
aopPut (AOP (result),
aopGet (AOP (right), offset, FALSE, FALSE),
- offset);
+ offset,
+ isOperandVolatile (result, FALSE));
offset++;
}
/* now depending on the sign of the source && destination */
size = AOP_SIZE (result) - AOP_SIZE (right);
/* if unsigned or not an integral type */
- if (SPEC_USIGN (rtype) || !IS_SPEC (rtype) || AOP_TYPE(right)==AOP_CRY)
+ if (!IS_SPEC (rtype) || SPEC_USIGN (rtype) || AOP_TYPE(right)==AOP_CRY)
{
while (size--)
- aopPut (AOP (result), zero, offset++);
+ aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE));
}
else
{
emitcode ("rlc", "a");
emitcode ("subb", "a,acc");
while (size--)
- aopPut (AOP (result), "a", offset++);
+ aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE));
}
/* we are done hurray !!!! */
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;
}
emitcode ("dec", "%s", rByte);
- aopPut(AOP(IC_RESULT(ic)), rByte, 0);
+ aopPut(AOP(IC_RESULT(ic)), rByte, 0, isOperandVolatile (IC_RESULT (ic), FALSE));
emitcode ("jnz", "%05d$", lbl->key + 100);
}
else if (IS_AOP_PREG (IC_RESULT (ic)))
static void
genReceive (iCode * ic)
{
- if (isOperandInFarSpace (IC_RESULT (ic)) &&
- (OP_SYMBOL (IC_RESULT (ic))->isspilt ||
- IS_TRUE_SYMOP (IC_RESULT (ic))))
- {
+ int size = getSize (operandType (IC_RESULT (ic)));
+ int offset = 0;
+ D(emitcode ("; genReceive",""));
- int size = getSize (operandType (IC_RESULT (ic)));
- int offset = fReturnSizeMCS51 - size;
- while (size--)
- {
- emitcode ("push", "%s", (strcmp (fReturn[fReturnSizeMCS51 - offset - 1], "a") ?
- fReturn[fReturnSizeMCS51 - offset - 1] : "acc"));
- offset++;
- }
+ 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 rb1off ;
aopOp (IC_RESULT (ic), ic, FALSE);
- size = AOP_SIZE (IC_RESULT (ic));
- offset = 0;
- while (size--)
+ rb1off = ic->argreg;
+ while (size--) {
+ aopPut (AOP (IC_RESULT (ic)), rb1regs[rb1off++ -5], offset++, isOperandVolatile (IC_RESULT (ic), FALSE));
+ }
+ }
+ freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+}
+
+/*-----------------------------------------------------------------*/
+/* genDummyRead - generate code for dummy read of volatiles */
+/*-----------------------------------------------------------------*/
+static void
+genDummyRead (iCode * ic)
+{
+ operand *op;
+ int size, offset;
+
+ D(emitcode("; genDummyRead",""));
+
+ op = IC_RIGHT (ic);
+ if (op && IS_SYMOP (op))
+ {
+ 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
{
- emitcode ("pop", "acc");
- aopPut (AOP (IC_RESULT (ic)), "a", offset++);
+ /* bit variables done */
+ /* general case */
+ size = AOP_SIZE (op);
+ offset = 0;
+ while (size--)
+ {
+ MOVA (aopGet (AOP (op), offset, FALSE, FALSE));
+ offset++;
+ }
}
+ freeAsmop (op, NULL, ic, TRUE);
}
- else
+
+ op = IC_LEFT (ic);
+ if (op && IS_SYMOP (op))
{
- _G.accInUse++;
- aopOp (IC_RESULT (ic), ic, FALSE);
- _G.accInUse--;
- assignResultValue (IC_RESULT (ic));
- }
+ aopOp (op, ic, FALSE);
- freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ /* 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 (AOP (op), offset, FALSE, FALSE));
+ offset++;
+ }
+ }
+
+ freeAsmop (op, NULL, ic, TRUE);
+ }
}
/*-----------------------------------------------------------------*/
-/* gen51AggregateAssign - copy complete array's or structures */
+/* genCritical - generate code for start of a critical sequence */
/*-----------------------------------------------------------------*/
-void gen51AggregateAssign(iCode *ic) {
- operand *left=IC_LEFT(ic);
- operand *right=IC_RIGHT(ic);
- char *fromName=OP_SYMBOL(right)->rname;
- char *toName=OP_SYMBOL(left)->rname;
- int fromSize=getSize(OP_SYMBOL(right)->type);
- int toSize=getSize(OP_SYMBOL(left)->type);
- int count=toSize;
+static void
+genCritical (iCode *ic)
+{
+ symbol *tlbl = newiTempLabel (NULL);
- if (SPEC_OCLS(OP_SYMBOL(left)->etype)!=xdata ||
- SPEC_OCLS(OP_SYMBOL(right)->etype)!=code) {
- // well, this code isn't used yet from anywhere else as for initialising
- fprintf (stderr, "*** error: %s:%d can only assign aggregates from cseg to xseg for now\n", ic->filename, ic->lineno);
- exit (457);
- }
+ D(emitcode("; genCritical",""));
+
+ if (IC_RESULT (ic))
+ aopOp (IC_RESULT (ic), ic, TRUE);
- if (fromSize!=toSize) {
- fprintf (stderr, "*** error: %s:%d aggregates have different size\n",
- ic->filename, ic->lineno);
- exit (821);
- }
+ emitcode ("setb", "c");
+ emitcode ("jbc", "ea,%05d$", (tlbl->key + 100)); /* atomic test & clear */
+ emitcode ("clr", "c");
+ emitcode ("", "%05d$:", (tlbl->key + 100));
-#if 1
- // use the generic memcpy() for now
- emitcode (";", "initialize %s", OP_SYMBOL(IC_LEFT(ic))->name);
- emitcode ("mov", "dptr,#_memcpy_PARM_2");
- emitcode ("mov", "a,#%s", fromName);
- emitcode ("movx", "@dptr,a");
- emitcode ("inc", "dptr");
- emitcode ("mov", "a,#(%s>>8)", fromName);
- emitcode ("movx", "@dptr,a");
- emitcode ("inc", "dptr");
- emitcode ("mov", "a,#%02x; only from cseg for now", 2);
- emitcode ("movx", "@dptr,a");
- emitcode ("mov", "dptr,#_memcpy_PARM_3");
- emitcode ("mov", "a,#(%d>>0); number of bytes", count);
- emitcode ("movx", "@dptr,a");
- emitcode ("inc", "dptr");
- emitcode ("mov", "a,#(%d>>8)", count);
- emitcode ("movx", "@dptr,a");
- emitcode ("mov", "dptr,#%s", toName);
- emitcode ("mov", "b,#%02x; only to xseg for now", 1);
- emitcode ("lcall", "_memcpy");
-#else
- // more efficient, but will require the native_memcpy_cs2xs
- emitcode ("mov", "r0,#%s", fromName);
- emitcode ("mov", "r1,#(%s>>8)", fromName);
- emitcode ("mov", "r2,#%s", toName);
- emitcode ("mov", "r3,#(%s>>8)", toName);
- emitcode ("mov", "r4,#%d", count);
- emitcode ("mov", "r5,#(%d>>8)", count);
- emitcode ("lcall", "_native_memcpy_cs2xs");
-#endif
+ if (IC_RESULT (ic))
+ outBitC (IC_RESULT (ic)); /* save old ea in an operand */
+ else
+ emitcode ("push", "psw"); /* save old ea via c in psw on top of stack*/
+
+ if (IC_RESULT (ic))
+ freeAsmop (IC_RESULT (ic), 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
+ {
+ MOVA (aopGet (AOP (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");
+ }
+}
+
+
/*-----------------------------------------------------------------*/
/* gen51Code - generate code for 8051 based controllers */
/*-----------------------------------------------------------------*/
lineHead = lineCurr = NULL;
/* print the allocation information */
- if (allocInfo)
+ if (allocInfo && currFunc)
printAllocInfo (currFunc, codeOutFile);
/* if debug information required */
- /* if (options.debug && currFunc) { */
if (options.debug && currFunc)
{
- cdbSymbol (currFunc, cdbFile, FALSE, TRUE);
+ debugFile->writeFunction(currFunc);
_G.debugLine = 1;
if (IS_STATIC (currFunc->etype))
emitcode ("", "F%s$%s$0$0 ==.", moduleName, currFunc->name);
for (ic = lic; ic; ic = ic->next)
{
-
- if (cln != ic->lineno)
+ _G.current_iCode = ic;
+
+ if (ic->lineno && cln != ic->lineno)
{
if (options.debug)
{
ic->level, ic->block);
_G.debugLine = 0;
}
- emitcode (";", "%s %d", ic->filename, ic->lineno);
+ if (!options.noCcodeInAsm) {
+ emitcode ("", ";%s:%d: %s", ic->filename, ic->lineno,
+ printCLine(ic->filename, ic->lineno));
+ }
cln = ic->lineno;
}
+ 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));
+ }
/* if the result is marked as
spilt and rematerializable or code for
this has already been generated then
break;
case GET_VALUE_AT_ADDRESS:
- genPointerGet (ic, hasInc(IC_LEFT(ic),ic));
+ 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));
+ genPointerSet (ic, hasInc (IC_RESULT(ic),ic,getSize(operandType(IC_RIGHT(ic)))));
else
genAssign (ic);
break;
addSet (&_G.sendSet, ic);
break;
- case ARRAYINIT:
- gen51AggregateAssign(ic);
+ case DUMMY_READ_VOLATILE:
+ genDummyRead (ic);
+ break;
+
+ case CRITICAL:
+ genCritical (ic);
+ break;
+
+ case ENDCRITICAL:
+ genEndCritical (ic);
+ break;
+
+ case SWAP:
+ genSwap (ic);
break;
default:
}
}
+ _G.current_iCode = NULL;
/* now we are ready to call the
peep hole optimizer */
projects / fw / sdcc / blobdiff