/*-------------------------------------------------------------------------
- avrgen.c - source file for code generation for ATMEL AVR
+ gen.c - source file for code generation for ATMEL AVR
Written By - Sandeep Dutta . sandeep.dutta@usa.net (2000)
#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)
-#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 *one = "0x01";
static char *spname;
-char *fReturnAVR[] =
-{"r16", "r17", "r18", "r19"};
+char *fReturnAVR[] = { "r16", "r17", "r18", "r19" };
unsigned fAVRReturnSize = 4; /* shared with ralloc.c */
char **fAVRReturn = fReturnAVR;
-static short rbank = -1;
-static char *larray[4] =
-{"lo8", "hi8", "hlo8", "hhi8"};
-static char *tscr[4] =
-{"r0", "r1", "r24", "r25"};
-static struct
- {
- short xPushed;
- short zPushed;
- short accInUse;
- short inLine;
- short debugLine;
- short nRegsSaved;
- set *sendSet;
- }
-_G;
+static char *larray[4] = { ">", "<", "hlo8", "hhi8" };
+
+static struct {
+ short xPushed;
+ short zPushed;
+ short accInUse;
+ short inLine;
+ short debugLine;
+ short nRegsSaved;
+ set *sendSet;
+} _G;
extern int avr_ptrRegReq;
extern int avr_nRegs;
extern FILE *codeOutFile;
-static void saverbank (int, iCode *, bool);
#define RESULTONSTACK(x) \
(IC_RESULT(x) && IC_RESULT(x)->aop && \
IC_RESULT(x)->aop->type == AOP_STK )
#define MOVR0(x) if (strcmp(x,"r0")) emitcode("mov","r0,%s",x);
+#define MOVR24(x) if (strcmp(x,"r24")) emitcode("mov","r24,%s",x);
+#define AOP_ISHIGHREG(a,n) (a->type == AOP_REG && a->aopu.aop_reg[n] && a->aopu.aop_reg[n]->rIdx >= R16_IDX)
#define CLRC emitcode("clc","")
#define SETC emitcode("stc","")
#define MOVA(x)
static lineNode *lineHead = NULL;
static lineNode *lineCurr = NULL;
-static unsigned char SLMask[] =
-{0xFF, 0xFE, 0xFC, 0xF8, 0xF0,
- 0xE0, 0xC0, 0x80, 0x00};
-static unsigned char SRMask[] =
-{0xFF, 0x7F, 0x3F, 0x1F, 0x0F,
- 0x07, 0x03, 0x01, 0x00};
-
#define LSB 0
#define MSB16 1
#define MSB24 2
#define MSB32 3
+#if 0
+// PENDING: Unused.
+/*-----------------------------------------------------------------*/
+/* reAdjustPreg - points a register back to where it should */
+/*-----------------------------------------------------------------*/
+static void
+reAdjustPreg (asmop * aop)
+{
+ int size;
+
+ aop->coff = 0;
+ if ((size = aop->size) <= 1)
+ return;
+ size--;
+ switch (aop->type) {
+ case AOP_X:
+ case AOP_Z:
+ emitcode ("sbiw", "%s,%d", aop->aopu.aop_ptr->name, size);
+ break;
+ }
+
+}
+
+/*-----------------------------------------------------------------*/
+/* outBitC - output a bit C */
+/*-----------------------------------------------------------------*/
+static void
+outBitC (operand * result)
+{
+ emitcode ("clr", "r0");
+ emitcode ("rol", "r0");
+ outAcc (result);
+}
+
+/*-----------------------------------------------------------------*/
+/* inExcludeList - return 1 if the string is in exclude Reg list */
+/*-----------------------------------------------------------------*/
+static bool
+inExcludeList (char *s)
+{
+ int i = 0;
+
+ if (options.excludeRegs[i] &&
+ STRCASECMP (options.excludeRegs[i], "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;
+}
+
+/*-----------------------------------------------------------------*/
+/* findLabelBackwards: walks back through the iCode chain looking */
+/* for the given label. Returns number of iCode instructions */
+/* between that label and given ic. */
+/* Returns zero if label not found. */
+/*-----------------------------------------------------------------*/
+static int
+findLabelBackwards (iCode * ic, int key)
+{
+ int count = 0;
+
+ while (ic->prev) {
+ ic = ic->prev;
+ count++;
+
+ if (ic->op == LABEL && IC_LABEL (ic)->key == key) {
+ /* printf("findLabelBackwards = %d\n", count); */
+ return count;
+ }
+ }
+
+ return 0;
+}
+
+/*-----------------------------------------------------------------*/
+/* addSign - complete with sign */
+/*-----------------------------------------------------------------*/
+static void
+addSign (operand * result, int offset, int sign)
+{
+ int size = (getDataSize (result) - offset);
+ if (size > 0) {
+ if (sign) {
+ emitcode ("rlc", "a");
+ emitcode ("subb", "a,acc");
+ while (size--)
+ aopPut (AOP (result), "a", offset++);
+ }
+ else
+ while (size--)
+ aopPut (AOP (result), zero, offset++);
+ }
+}
+
+/*-----------------------------------------------------------------*/
+/* isLiteralBit - test if lit == 2^n */
+/*-----------------------------------------------------------------*/
+static int
+isLiteralBit (unsigned long lit)
+{
+ unsigned long pw[32] = { 1L, 2L, 4L, 8L, 16L, 32L, 64L, 128L,
+ 0x100L, 0x200L, 0x400L, 0x800L,
+ 0x1000L, 0x2000L, 0x4000L, 0x8000L,
+ 0x10000L, 0x20000L, 0x40000L, 0x80000L,
+ 0x100000L, 0x200000L, 0x400000L, 0x800000L,
+ 0x1000000L, 0x2000000L, 0x4000000L, 0x8000000L,
+ 0x10000000L, 0x20000000L, 0x40000000L, 0x80000000L
+ };
+ int idx;
+
+ for (idx = 0; idx < 32; idx++)
+ if (lit == pw[idx])
+ return idx + 1;
+ return 0;
+}
+
+/*-----------------------------------------------------------------*/
+/* outAcc - output Acc */
+/*-----------------------------------------------------------------*/
+static void
+outAcc (operand * result)
+{
+ int size, offset;
+ size = getDataSize (result);
+ if (size) {
+ aopPut (AOP (result), "r0", 0);
+ size--;
+ offset = 1;
+ /* unsigned or positive */
+ while (size--) {
+ aopPut (AOP (result), zero, offset++);
+ }
+ }
+}
+
+#endif // End Unused code section
+
/*-----------------------------------------------------------------*/
/* emitcode - writes the code into a file : for now it is simple */
/*-----------------------------------------------------------------*/
static void
-emitcode (char *inst, char *fmt,...)
+emitcode (char *inst, char *fmt, ...)
+{
+ va_list ap;
+ char lb[INITIAL_INLINEASM];
+ char *lbp = lb;
+
+ va_start (ap, fmt);
+
+ if (inst && *inst) {
+ if (fmt && *fmt)
+ sprintf (lb, "%s\t", inst);
+ else
+ sprintf (lb, "%s", inst);
+ vsprintf (lb + (strlen (lb)), fmt, ap);
+ }
+ else
+ vsprintf (lb, fmt, ap);
+
+ while (isspace ((unsigned char)*lbp))
+ lbp++;
+
+ if (lbp && *lbp)
+ lineCurr = (lineCurr ?
+ connectLine (lineCurr, newLineNode (lb)) :
+ (lineHead = newLineNode (lb)));
+ lineCurr->isInline = _G.inLine;
+ lineCurr->isDebug = _G.debugLine;
+ va_end (ap);
+}
+
+/*-----------------------------------------------------------------*/
+/* avr_emitDebuggerSymbol - associate the current code location */
+/* with a debugger symbol */
+/*-----------------------------------------------------------------*/
+void
+avr_emitDebuggerSymbol (char * debugSym)
+{
+ _G.debugLine = 1;
+ emitcode ("", "%s ==.", debugSym);
+ _G.debugLine = 0;
+}
+
+/*-----------------------------------------------------------------*/
+/* hasInc - operand is incremented before any other use */
+/*-----------------------------------------------------------------*/
+static iCode *
+hasInc (operand *op, iCode *ic)
{
- va_list ap;
- char lb[MAX_INLINEASM];
- char *lbp = lb;
-
- va_start (ap, fmt);
-
- if (inst && *inst)
- {
- if (fmt && *fmt)
- sprintf (lb, "%s\t", inst);
- else
- sprintf (lb, "%s", inst);
- vsprintf (lb + (strlen (lb)), fmt, ap);
- }
- else
- vsprintf (lb, fmt, ap);
-
- while (isspace (*lbp))
- lbp++;
-
- if (lbp && *lbp)
- lineCurr = (lineCurr ?
- connectLine (lineCurr, newLineNode (lb)) :
- (lineHead = newLineNode (lb)));
- lineCurr->isInline = _G.inLine;
- lineCurr->isDebug = _G.debugLine;
- va_end (ap);
+ sym_link *type = operandType(op);
+ sym_link *retype = getSpec (type);
+ iCode *lic = ic->next;
+ int isize ;
+
+ if (IS_BITVAR(retype)||!IS_PTR(type)) return NULL;
+ if (IS_AGGREGATE(type->next)) return NULL;
+ isize = getSize(type->next);
+ while (lic) {
+ /* if operand of the form op = op + <sizeof *op> */
+ if (lic->op == '+' && isOperandEqual(IC_LEFT(lic),op) &&
+ isOperandEqual(IC_RESULT(lic),op) &&
+ isOperandLiteral(IC_RIGHT(lic)) &&
+ operandLitValue(IC_RIGHT(lic)) == isize) {
+ return lic;
+ }
+ /* if the operand used or deffed */
+ if (bitVectBitValue(OP_USES(op),lic->key) || (lic->defKey == op->key)) {
+ return NULL;
+ }
+ lic = lic->next;
+ }
+ return NULL;
}
/*-----------------------------------------------------------------*/
static regs *
getFreePtr (iCode * ic, asmop ** aopp, bool result, bool zonly)
{
- bool xiu = FALSE, ziu = FALSE;
- bool xou = FALSE, zou = FALSE;
-
- /* the logic: if x & z used in the instruction
- then we are in trouble otherwise */
-
- /* first check if x & z are used by this
- instruction, in which case we are in trouble */
- if ((xiu = bitVectBitValue (ic->rUsed, X_IDX)) &&
- (ziu = bitVectBitValue (ic->rUsed, Z_IDX)))
- {
- goto endOfWorld;
- }
-
- xou = bitVectBitValue (ic->rMask, X_IDX);
- zou = bitVectBitValue (ic->rMask, Z_IDX);
-
- /* if no usage of Z then return it */
- if (!ziu && !zou)
- {
- ic->rUsed = bitVectSetBit (ic->rUsed, Z_IDX);
- (*aopp)->type = AOP_Z;
-
- (*aopp)->aop_ptr2 = avr_regWithIdx (R31_IDX);
- return (*aopp)->aopu.aop_ptr = avr_regWithIdx (R30_IDX);
- }
-
- /* if no usage of X then return it */
- if (!xiu && !xou && !zonly)
- {
- ic->rUsed = bitVectSetBit (ic->rUsed, X_IDX);
- (*aopp)->type = AOP_X;
-
- (*aopp)->aop_ptr2 = avr_regWithIdx (R27_IDX);
- return (*aopp)->aopu.aop_ptr = avr_regWithIdx (R26_IDX);
- }
-
- /* if z not used then */
-
- if (!ziu)
- {
- /* push it if not already pushed */
- if (!_G.zPushed)
- {
- emitcode ("push", "%s",
- avr_regWithIdx (R30_IDX)->dname);
- emitcode ("push", "%s",
- avr_regWithIdx (R31_IDX)->dname);
- _G.zPushed++;
- }
-
- ic->rUsed = bitVectSetBit (ic->rUsed, Z_IDX);
- (*aopp)->type = AOP_Z;
- (*aopp)->aop_ptr2 = avr_regWithIdx (R31_IDX);
- return (*aopp)->aopu.aop_ptr = avr_regWithIdx (R30_IDX);
- }
-
- /* now we know they both have usage */
- /* if x not used in this instruction */
- if (!xiu && !zonly)
- {
- /* push it if not already pushed */
- if (!_G.xPushed)
- {
- emitcode ("push", "%s",
- avr_regWithIdx (R26_IDX)->dname);
- emitcode ("push", "%s",
- avr_regWithIdx (R27_IDX)->dname);
- _G.xPushed++;
- }
-
- ic->rUsed = bitVectSetBit (ic->rUsed, X_IDX);
- (*aopp)->type = AOP_X;
-
- (*aopp)->aop_ptr2 = avr_regWithIdx (R27_IDX);
- return (*aopp)->aopu.aop_ptr = avr_regWithIdx (R26_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;
- }
-
- piCode (ic, stdout);
- /* other wise this is true end of the world */
- werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "getFreePtr should never reach here");
- exit (0);
+ bool xiu = FALSE, ziu = FALSE;
+ bool xou = FALSE, zou = FALSE;
+
+ /* the logic: if x & z used in the instruction
+ then we are in trouble otherwise */
+
+ /* first check if x & z are used by this
+ instruction, in which case we are in trouble */
+ if ((xiu = bitVectBitValue (ic->rUsed, X_IDX)) &&
+ (ziu = bitVectBitValue (ic->rUsed, Z_IDX))) {
+ goto endOfWorld;
+ }
+
+ xou = bitVectBitValue (ic->rMask, X_IDX);
+ zou = bitVectBitValue (ic->rMask, Z_IDX);
+
+ /* if no usage of Z then return it */
+ if (!ziu && !zou) {
+ ic->rUsed = bitVectSetBit (ic->rUsed, Z_IDX);
+ (*aopp)->type = AOP_Z;
+
+ (*aopp)->aop_ptr2 = avr_regWithIdx (R31_IDX);
+ return (*aopp)->aopu.aop_ptr = avr_regWithIdx (R30_IDX);
+ }
+
+ /* if no usage of X then return it */
+ if (!xiu && !xou && !zonly) {
+ ic->rUsed = bitVectSetBit (ic->rUsed, X_IDX);
+ (*aopp)->type = AOP_X;
+
+ (*aopp)->aop_ptr2 = avr_regWithIdx (R27_IDX);
+ return (*aopp)->aopu.aop_ptr = avr_regWithIdx (R26_IDX);
+ }
+
+ /* if z not used then */
+
+ if (!ziu) {
+ /* push it if not already pushed */
+ if (!_G.zPushed) {
+ emitcode ("push", "%s",
+ avr_regWithIdx (R30_IDX)->dname);
+ emitcode ("push", "%s",
+ avr_regWithIdx (R31_IDX)->dname);
+ _G.zPushed++;
+ }
+
+ ic->rUsed = bitVectSetBit (ic->rUsed, Z_IDX);
+ (*aopp)->type = AOP_Z;
+ (*aopp)->aop_ptr2 = avr_regWithIdx (R31_IDX);
+ return (*aopp)->aopu.aop_ptr = avr_regWithIdx (R30_IDX);
+ }
+
+ /* now we know they both have usage */
+ /* if x not used in this instruction */
+ if (!xiu && !zonly) {
+ /* push it if not already pushed */
+ if (!_G.xPushed) {
+ emitcode ("push", "%s",
+ avr_regWithIdx (R26_IDX)->dname);
+ emitcode ("push", "%s",
+ avr_regWithIdx (R27_IDX)->dname);
+ _G.xPushed++;
+ }
+
+ ic->rUsed = bitVectSetBit (ic->rUsed, X_IDX);
+ (*aopp)->type = AOP_X;
+
+ (*aopp)->aop_ptr2 = avr_regWithIdx (R27_IDX);
+ return (*aopp)->aopu.aop_ptr = avr_regWithIdx (R26_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;
+ }
+
+ /* other wise this is true end of the world */
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "getFreePtr should never reach here");
+ exit (0);
}
/*-----------------------------------------------------------------*/
static asmop *
newAsmop (short type)
{
- asmop *aop;
+ asmop *aop;
- aop = Safe_calloc (1, sizeof (asmop));
- aop->type = type;
- return aop;
+ aop = Safe_calloc (1, sizeof (asmop));
+ aop->type = type;
+ return aop;
}
/*-----------------------------------------------------------------*/
pointerCode (sym_link * etype)
{
- return PTR_TYPE (SPEC_OCLS (etype));
+ return PTR_TYPE (SPEC_OCLS (etype));
}
static asmop *
aopForSym (iCode * ic, symbol * sym, bool result)
{
- asmop *aop;
- memmap *space = SPEC_OCLS (sym->etype);
-
- /* if already has one */
- if (sym->aop)
- return sym->aop;
-
- /* assign depending on the storage class */
- /* if it is on the stack */
- if (sym->onStack)
- {
- sym->aop = aop = newAsmop (0);
- aop->size = getSize (sym->type);
-
- /* we can use std / ldd instruction */
- if (sym->stack > 0 && (sym->stack + getSize (sym->type) - 1) <= 63)
- {
- aop->type = AOP_STK_D;
- aop->aopu.aop_stk = sym->stack;
- return aop;
- }
-
- /* otherwise get a free pointer register X/Z */
- aop->aopu.aop_ptr = getFreePtr (ic, &aop, result, FALSE);
-
- /* now assign the address of the variable to
- the pointer register */
- if (aop->type != AOP_STK)
- {
- emitcode ("movw", "%s,r28", aop->aopu.aop_ptr->name);
- if (sym->stack < 0)
- {
- if ((sym->stack - _G.nRegsSaved) > -63)
- {
- emitcode ("sbiw", "%s,0x%02x",
- aop->aopu.aop_ptr->name,
- (sym->stack - _G.nRegsSaved));
+ asmop *aop;
+ memmap *space = SPEC_OCLS (sym->etype);
+
+ /* if already has one */
+ if (sym->aop)
+ return sym->aop;
+
+ /* assign depending on the storage class */
+ /* if it is on the stack */
+ if (sym->onStack) {
+ sym->aop = aop = newAsmop (0);
+ aop->size = getSize (sym->type);
+
+ /* we can use std / ldd instruction */
+ if (sym->stack > 0
+ && (sym->stack + getSize (sym->type) - 1) <= 63) {
+ aop->type = AOP_STK_D;
+ aop->aopu.aop_stk = sym->stack;
+ return aop;
}
- else
- {
- emitcode ("subi", "%s,lo8(%d)", aop->aopu.aop_ptr->name,
- sym->stack - _G.nRegsSaved);
- emitcode ("sbci", "%s,hi8(%d)", aop->aop_ptr2->name,
- sym->stack - _G.nRegsSaved);
- }
- }
- else
- {
- if (sym->stack <= 63)
- {
- emitcode ("adiw", "%s,0x%02x", aop->aopu.aop_ptr->name, sym->stack);
+
+ /* otherwise get a free pointer register X/Z */
+ aop->aopu.aop_ptr = getFreePtr (ic, &aop, result, FALSE);
+
+ /* now assign the address of the variable to
+ the pointer register */
+ if (aop->type != AOP_STK) {
+ emitcode ("movw", "%s,r28", aop->aopu.aop_ptr->name);
+ if (sym->stack < 0) {
+ if ((sym->stack - _G.nRegsSaved) > -63) {
+ emitcode ("sbiw", "%s,0x%02x",
+ aop->aopu.aop_ptr->name,
+ (sym->stack -
+ _G.nRegsSaved));
+ }
+ else {
+ emitcode ("subi", "%s,<(%d)",
+ aop->aopu.aop_ptr->name,
+ sym->stack - _G.nRegsSaved);
+ emitcode ("sbci", "%s,>(%d)",
+ aop->aop_ptr2->name,
+ sym->stack - _G.nRegsSaved);
+ }
+ }
+ else {
+ if (sym->stack <= 63) {
+ emitcode ("adiw", "%s,0x%02x",
+ aop->aopu.aop_ptr->name,
+ sym->stack);
+ }
+ else {
+ emitcode ("subi", "%s,<(-%d)",
+ aop->aopu.aop_ptr->name,
+ sym->stack);
+ emitcode ("sbci", "%s,>(-%d)",
+ aop->aop_ptr2->name,
+ sym->stack);
+ }
+ }
}
- else
- {
- emitcode ("subi", "%s,lo8(-%d)", aop->aopu.aop_ptr->name, sym->stack);
- emitcode ("sbci", "%s,hi8(-%d)", aop->aop_ptr2->name, sym->stack);
- }
- }
- }
- return aop;
- }
-
- /* if in bit space */
- if (IN_BITSPACE (space))
- {
- sym->aop = aop = newAsmop (AOP_CRY);
- aop->aopu.aop_dir = sym->rname;
- aop->size = getSize (sym->type);
- return aop;
- }
- /* if it is in direct space */
- if (IN_DIRSPACE (space))
- {
- sym->aop = aop = newAsmop (AOP_DIR);
- aop->aopu.aop_dir = sym->rname;
- aop->size = getSize (sym->type);
- return aop;
- }
-
- /* special case for a function */
- 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->size = FPTRSIZE;
- return aop;
- }
-
- /* only remaining is code / eeprom which will need pointer reg */
- /* if it is in code space */
-
- sym->aop = aop = newAsmop (0);
-
- if (IN_CODESPACE (space))
- aop->code = 1;
-
- aop->aopu.aop_ptr = getFreePtr (ic, &aop, result, aop->code);
- aop->size = getSize (sym->type);
- emitcode ("ldi", "%s,lo8(%s)", aop->aopu.aop_ptr->name, sym->rname);
- emitcode ("ldi", "%s,hi8(%s)", aop->aop_ptr2);
-
- return aop;
+ return aop;
+ }
+
+ /* if in bit space */
+ if (IN_BITSPACE (space)) {
+ sym->aop = aop = newAsmop (AOP_CRY);
+ aop->aopu.aop_dir = sym->rname;
+ aop->size = getSize (sym->type);
+ return aop;
+ }
+ /* if it is in direct space */
+ if (IN_DIRSPACE (space)) {
+ sym->aop = aop = newAsmop (AOP_DIR);
+ aop->aopu.aop_dir = sym->rname;
+ aop->size = getSize (sym->type);
+ return aop;
+ }
+
+ /* special case for a function */
+ 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->size = FPTRSIZE;
+ return aop;
+ }
+
+ /* only remaining is code / eeprom which will need pointer reg */
+ /* if it is in code space */
+
+ sym->aop = aop = newAsmop (0);
+
+ if (IN_CODESPACE (space))
+ aop->code = 1;
+
+ aop->aopu.aop_ptr = getFreePtr (ic, &aop, result, aop->code);
+ aop->size = getSize (sym->type);
+ emitcode ("ldi", "%s,<(%s)", aop->aopu.aop_ptr->name, sym->rname);
+ emitcode ("ldi", "%s,>(%s)", aop->aop_ptr2);
+
+ return aop;
}
/*-----------------------------------------------------------------*/
static asmop *
aopForRemat (symbol * sym)
{
- iCode *ic = sym->rematiCode;
- asmop *aop = newAsmop (AOP_IMMD);
- int val = 0;
-
- for (;;)
- {
- if (ic->op == '+')
- val += (int) operandLitValue (IC_RIGHT (ic));
- else if (ic->op == '-')
- val -= (int) operandLitValue (IC_RIGHT (ic));
- else
- break;
-
- ic = OP_SYMBOL (IC_LEFT (ic))->rematiCode;
- }
-
- if (val)
- sprintf (buffer, "(%s %c 0x%04x)",
- OP_SYMBOL (IC_LEFT (ic))->rname,
- val >= 0 ? '+' : '-',
- abs (val) & 0xffff);
- 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);
- return aop;
+ iCode *ic = sym->rematiCode;
+ asmop *aop = newAsmop (AOP_IMMD);
+ int val = 0;
+
+ for (;;) {
+ if (ic->op == '+')
+ val += (int) operandLitValue (IC_RIGHT (ic));
+ else if (ic->op == '-')
+ val -= (int) operandLitValue (IC_RIGHT (ic));
+ else
+ break;
+
+ ic = OP_SYMBOL (IC_LEFT (ic))->rematiCode;
+ }
+
+ if (val)
+ sprintf (buffer, "(%s %c 0x%04x)",
+ OP_SYMBOL (IC_LEFT (ic))->rname,
+ val >= 0 ? '+' : '-', abs (val) & 0xffff);
+ 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);
+ return aop;
}
/*-----------------------------------------------------------------*/
static bool
regsInCommon (operand * op1, operand * op2)
{
- symbol *sym1, *sym2;
- int i;
+ symbol *sym1, *sym2;
+ int i;
- /* if they have registers in common */
- if (!IS_SYMOP (op1) || !IS_SYMOP (op2))
- return FALSE;
+ /* if they have registers in common */
+ if (!IS_SYMOP (op1) || !IS_SYMOP (op2))
+ return FALSE;
- sym1 = OP_SYMBOL (op1);
- sym2 = OP_SYMBOL (op2);
+ sym1 = OP_SYMBOL (op1);
+ sym2 = OP_SYMBOL (op2);
- if (sym1->nRegs == 0 || sym2->nRegs == 0)
- return FALSE;
+ if (sym1->nRegs == 0 || sym2->nRegs == 0)
+ return FALSE;
- for (i = 0; i < sym1->nRegs; i++)
- {
- int j;
- if (!sym1->regs[i])
- continue;
+ for (i = 0; i < sym1->nRegs; i++) {
+ int j;
+ if (!sym1->regs[i])
+ continue;
- for (j = 0; j < sym2->nRegs; j++)
- {
- if (!sym2->regs[j])
- continue;
+ for (j = 0; j < sym2->nRegs; j++) {
+ if (!sym2->regs[j])
+ continue;
- if (sym2->regs[j] == sym1->regs[i])
- return TRUE;
+ if (sym2->regs[j] == sym1->regs[i])
+ return TRUE;
+ }
}
- }
- return FALSE;
+ return FALSE;
}
/*-----------------------------------------------------------------*/
static bool
operandsEqu (operand * op1, operand * op2)
{
- symbol *sym1, *sym2;
+ symbol *sym1, *sym2;
- /* if they not symbols */
- if (!IS_SYMOP (op1) || !IS_SYMOP (op2))
- return FALSE;
+ /* if they not symbols */
+ if (!IS_SYMOP (op1) || !IS_SYMOP (op2))
+ return FALSE;
- sym1 = OP_SYMBOL (op1);
- sym2 = OP_SYMBOL (op2);
+ sym1 = OP_SYMBOL (op1);
+ sym2 = OP_SYMBOL (op2);
- /* if both are itemps & one is spilt
- and the other is not then false */
- if (IS_ITEMP (op1) && IS_ITEMP (op2) &&
- sym1->isspilt != sym2->isspilt)
- return FALSE;
+ /* if both are itemps & one is spilt
+ and the other is not then false */
+ if (IS_ITEMP (op1) && IS_ITEMP (op2) &&
+ sym1->isspilt != sym2->isspilt) return FALSE;
- /* if they are the same */
- if (sym1 == sym2)
- return TRUE;
+ /* if they are the same */
+ if (sym1 == sym2)
+ return TRUE;
- if (strcmp (sym1->rname, sym2->rname) == 0)
- return TRUE;
+ if (strcmp (sym1->rname, sym2->rname) == 0)
+ return TRUE;
- /* if left is a tmp & right is not */
- if (IS_ITEMP (op1) &&
- !IS_ITEMP (op2) &&
- sym1->isspilt &&
- (sym1->usl.spillLoc == sym2))
- return TRUE;
+ /* if left is a tmp & right is not */
+ if (IS_ITEMP (op1) &&
+ !IS_ITEMP (op2) && sym1->isspilt && (sym1->usl.spillLoc == sym2))
+ return TRUE;
- if (IS_ITEMP (op2) &&
- !IS_ITEMP (op1) &&
- sym2->isspilt &&
- sym1->level > 0 &&
- (sym2->usl.spillLoc == sym1))
- return TRUE;
+ if (IS_ITEMP (op2) &&
+ !IS_ITEMP (op1) &&
+ sym2->isspilt && sym1->level > 0 && (sym2->usl.spillLoc == sym1))
+ return TRUE;
- return FALSE;
+ return FALSE;
}
/*-----------------------------------------------------------------*/
static bool
sameRegs (asmop * aop1, asmop * aop2)
{
- int i;
+ int i;
- if (aop1 == aop2)
- return TRUE;
+ if (aop1 == aop2)
+ return TRUE;
- if (aop1->type != AOP_REG ||
- aop2->type != AOP_REG)
- return FALSE;
+ if (aop1->type != AOP_REG || aop2->type != AOP_REG)
+ return FALSE;
- if (aop1->size != aop2->size)
- return FALSE;
+ if (aop1->size != aop2->size)
+ return FALSE;
- for (i = 0; i < aop1->size; i++)
- if (aop1->aopu.aop_reg[i] !=
- aop2->aopu.aop_reg[i])
- return FALSE;
+ for (i = 0; i < aop1->size; i++)
+ if (aop1->aopu.aop_reg[i] != aop2->aopu.aop_reg[i])
+ return FALSE;
- return TRUE;
+ return TRUE;
}
/*-----------------------------------------------------------------*/
static int
isRegPair (asmop * aop)
{
- if (!aop || aop->size != 2)
- return 0;
- if (aop->type == AOP_X || aop->type == AOP_Z)
- return 1;
- if (aop->type != AOP_REG)
- return 0;
- if ((aop->aopu.aop_reg[1]->rIdx -
- aop->aopu.aop_reg[0]->rIdx) == 1)
- return 1;
- return 0;
+ if (!aop || aop->size < 2)
+ return 0;
+ if (aop->type == AOP_X || aop->type == AOP_Z)
+ return 1;
+ if (aop->type != AOP_REG)
+ return 0;
+ if ( ((aop->aopu.aop_reg[1]->rIdx - aop->aopu.aop_reg[0]->rIdx) == 1) &&
+ (aop->aopu.aop_reg[0]->rIdx & 1) == 0)
+
+ return 1;
+ return 0;
+}
+
+/*-----------------------------------------------------------------*/
+/* allHigh - all registers are high registers */
+/*-----------------------------------------------------------------*/
+static int allHigh (asmop * aop)
+{
+ int i;
+
+ if (aop->type == AOP_X || aop->type == AOP_Z)
+ return 1;
+ if (aop->type != AOP_REG)
+ return 0;
+ for (i=0; i < aop->size ; i++ )
+ if (aop->aopu.aop_reg[i]->rIdx < R16_IDX) return 0;
+ return 1;
}
/*-----------------------------------------------------------------*/
static void
aopOp (operand * op, iCode * ic, bool result)
{
- asmop *aop;
- symbol *sym;
- int i;
-
- if (!op)
- return;
-
- /* if this a literal */
- if (IS_OP_LITERAL (op))
- {
- op->aop = aop = newAsmop (AOP_LIT);
- aop->aopu.aop_lit = op->operand.valOperand;
- aop->size = getSize (operandType (op));
- return;
- }
-
- /* if already has a asmop then continue */
- if (op->aop)
- return;
-
- /* if the underlying symbol has a aop */
- if (IS_SYMOP (op) && OP_SYMBOL (op)->aop)
- {
- op->aop = OP_SYMBOL (op)->aop;
- return;
- }
-
- /* if this is a true symbol */
- if (IS_TRUE_SYMOP (op))
- {
- op->aop = aopForSym (ic, OP_SYMBOL (op), result);
- return;
- }
-
- /* this is a temporary : this has
- only four choices :
- a) register
- b) spillocation
- c) rematerialize
- d) conditional
- e) can be a return use only */
-
- sym = OP_SYMBOL (op);
-
-
- /* if the type is a conditional */
- if (sym->regType == REG_CND)
- {
- aop = op->aop = sym->aop = newAsmop (AOP_CRY);
- aop->size = 0;
- return;
- }
-
- /* if it is spilt then two situations
- a) is rematerialize
- b) has a spill location */
- if (sym->isspilt || sym->nRegs == 0)
- {
-
- /* rematerialize it NOW */
- if (sym->remat)
- {
- sym->aop = op->aop = aop =
- aopForRemat (sym);
- aop->size = getSize (sym->type);
- return;
- }
-
- if (sym->accuse)
- {
- assert ("ACC_USE cannot happen in AVR\n");
- }
-
- if (sym->ruonly)
- {
- int i;
- aop = op->aop = sym->aop = newAsmop (AOP_STR);
- aop->size = getSize (sym->type);
- for (i = 0; i < (int) fAVRReturnSize; i++)
- aop->aopu.aop_str[i] = fAVRReturn[i];
- return;
- }
-
- /* else spill location */
- sym->aop = op->aop = aop =
- aopForSym (ic, sym->usl.spillLoc, result);
- aop->size = getSize (sym->type);
- return;
- }
-
- /* must be in a register */
- sym->aop = op->aop = aop = newAsmop (AOP_REG);
- aop->size = sym->nRegs;
- for (i = 0; i < sym->nRegs; i++)
- aop->aopu.aop_reg[i] = sym->regs[i];
+ asmop *aop;
+ symbol *sym;
+ int i;
+
+ if (!op)
+ return;
+
+ /* if this a literal */
+ if (IS_OP_LITERAL (op)) {
+ op->aop = aop = newAsmop (AOP_LIT);
+ aop->aopu.aop_lit = op->operand.valOperand;
+ aop->size = getSize (operandType (op));
+ return;
+ }
+
+ /* if already has a asmop then continue */
+ if (op->aop)
+ return;
+
+ /* if the underlying symbol has a aop */
+ if (IS_SYMOP (op) && OP_SYMBOL (op)->aop) {
+ op->aop = OP_SYMBOL (op)->aop;
+ return;
+ }
+
+ /* if this is a true symbol */
+ if (IS_TRUE_SYMOP (op)) {
+ op->aop = aopForSym (ic, OP_SYMBOL (op), result);
+ return;
+ }
+
+ /* this is a temporary : this has
+ only four choices :
+ a) register
+ b) spillocation
+ c) rematerialize
+ d) conditional
+ e) can be a return use only */
+
+ sym = OP_SYMBOL (op);
+
+
+ /* if the type is a conditional */
+ if (sym->regType & REG_CND) {
+ aop = op->aop = sym->aop = newAsmop (AOP_CRY);
+ aop->size = 0;
+ return;
+ }
+
+ /* if it is spilt then two situations
+ a) is rematerialize
+ b) has a spill location */
+ if (sym->isspilt || sym->nRegs == 0) {
+
+ /* rematerialize it NOW */
+ if (sym->remat) {
+ sym->aop = op->aop = aop = aopForRemat (sym);
+ aop->size = getSize (sym->type);
+ return;
+ }
+
+ if (sym->accuse) {
+ assert ("ACC_USE cannot happen in AVR\n");
+ }
+
+ if (sym->ruonly) {
+ int i;
+ aop = op->aop = sym->aop = newAsmop (AOP_STR);
+ aop->size = getSize (sym->type);
+ for (i = 0; i < (int) fAVRReturnSize; i++)
+ aop->aopu.aop_str[i] = fAVRReturn[i];
+ return;
+ }
+
+ /* else spill location */
+ if (sym->usl.spillLoc && getSize(sym->type) != getSize(sym->usl.spillLoc->type)) {
+ /* force a new aop if sizes differ */
+ sym->usl.spillLoc->aop = NULL;
+ }
+ sym->aop = op->aop = aop =
+ aopForSym (ic, sym->usl.spillLoc, result);
+ aop->size = getSize (sym->type);
+ return;
+ }
+
+ /* must be in a register */
+ sym->aop = op->aop = aop = newAsmop (AOP_REG);
+ aop->size = sym->nRegs;
+ for (i = 0; i < sym->nRegs; i++)
+ aop->aopu.aop_reg[i] = sym->regs[i];
}
/*-----------------------------------------------------------------*/
static void
freeAsmop (operand * op, asmop * aaop, iCode * ic, bool pop)
{
- asmop *aop;
-
- if (!op)
- aop = aaop;
- else
- aop = op->aop;
-
- if (!aop)
- return;
-
- if (aop->freed)
- goto dealloc;
-
- aop->freed = 1;
-
- /* depending on the asmop type only three cases need work AOP_RO
- , AOP_R1 && AOP_STK */
- switch (aop->type)
- {
- case AOP_X:
- if (_G.xPushed)
- {
- if (pop)
- {
- emitcode ("pop", "r26");
- emitcode ("pop", "r27");
- _G.xPushed--;
- }
- }
- bitVectUnSetBit (ic->rUsed, X_IDX);
- break;
-
- case AOP_Z:
- if (_G.zPushed)
- {
- if (pop)
- {
- emitcode ("pop", "r30");
- emitcode ("pop", "r31");
- _G.zPushed--;
- }
- }
- bitVectUnSetBit (ic->rUsed, Z_IDX);
- break;
-
- case AOP_STK:
- {
- int sz = aop->size;
- int stk = aop->aopu.aop_stk + aop->size;
- bitVectUnSetBit (ic->rUsed, X_IDX);
- bitVectUnSetBit (ic->rUsed, Z_IDX);
-
- getFreePtr (ic, &aop, FALSE, 0);
-
- emitcode ("movw", "%s,r28");
- if (stk)
- {
- if (stk <= 63 && stk > 0)
- {
- emitcode ("adiw", "%s,0x%02x", aop->aopu.aop_ptr->name, stk + 1);
- }
- else
- {
- emitcode ("subi", "%s,lo8(%d)", aop->aopu.aop_ptr->name, -(stk + 1));
- emitcode ("sbci", "%s,hi8(%d)", aop->aop_ptr2->name, -(stk + 1));
- }
- }
-
- while (sz--)
- {
- emitcode ("pop", "r24");
- emitcode ("st", "-%s,r24", aop->type == AOP_X ? "X" : "Z");
- if (!sz)
- break;
- }
- op->aop = aop;
- freeAsmop (op, NULL, ic, TRUE);
- if (_G.xPushed)
- {
- emitcode ("pop", "r26");
- emitcode ("pop", "r27");
- _G.xPushed--;
- }
-
- if (_G.zPushed)
- {
- emitcode ("pop", "r30");
- emitcode ("pop", "r31");
- _G.zPushed--;
- }
- }
- }
-
-dealloc:
- /* all other cases just dealloc */
- if (op)
- {
- op->aop = NULL;
- if (IS_SYMOP (op))
- {
- OP_SYMBOL (op)->aop = NULL;
- /* if the symbol has a spill */
- if (SPIL_LOC (op))
- SPIL_LOC (op)->aop = NULL;
- }
- }
+ asmop *aop;
+
+ if (!op)
+ aop = aaop;
+ else
+ aop = op->aop;
+
+ if (!aop)
+ return;
+
+ if (aop->freed)
+ goto dealloc;
+
+ aop->freed = 1;
+
+ /* depending on the asmop type only three cases need work AOP_RO
+ , AOP_R1 && AOP_STK */
+ switch (aop->type) {
+ case AOP_X:
+ if (_G.xPushed) {
+ if (pop) {
+ emitcode ("pop", "r26");
+ emitcode ("pop", "r27");
+ _G.xPushed--;
+ }
+ }
+ bitVectUnSetBit (ic->rUsed, X_IDX);
+ break;
+
+ case AOP_Z:
+ if (_G.zPushed) {
+ if (pop) {
+ emitcode ("pop", "r30");
+ emitcode ("pop", "r31");
+ _G.zPushed--;
+ }
+ }
+ bitVectUnSetBit (ic->rUsed, Z_IDX);
+ break;
+
+ case AOP_STK:
+ {
+ int sz = aop->size;
+ int stk = aop->aopu.aop_stk + aop->size;
+ bitVectUnSetBit (ic->rUsed, X_IDX);
+ bitVectUnSetBit (ic->rUsed, Z_IDX);
+
+ getFreePtr (ic, &aop, FALSE, 0);
+
+ emitcode ("movw", "%s,r28");
+ if (stk) {
+ if (stk <= 63 && stk > 0) {
+ emitcode ("adiw", "%s,0x%02x",
+ aop->aopu.aop_ptr->name,
+ stk + 1);
+ }
+ else {
+ emitcode ("subi", "%s,<(%d)",
+ aop->aopu.aop_ptr->name,
+ -(stk + 1));
+ emitcode ("sbci", "%s,>(%d)",
+ aop->aop_ptr2->name,
+ -(stk + 1));
+ }
+ }
+
+ while (sz--) {
+ emitcode ("pop", "r24");
+ emitcode ("st", "-%s,r24",
+ aop->type == AOP_X ? "X" : "Z");
+ if (!sz)
+ break;
+ }
+ op->aop = aop;
+ freeAsmop (op, NULL, ic, TRUE);
+ if (_G.xPushed) {
+ emitcode ("pop", "r26");
+ emitcode ("pop", "r27");
+ _G.xPushed--;
+ }
+
+ if (_G.zPushed) {
+ emitcode ("pop", "r30");
+ emitcode ("pop", "r31");
+ _G.zPushed--;
+ }
+ }
+ }
+
+ dealloc:
+ /* all other cases just dealloc */
+ if (op) {
+ op->aop = NULL;
+ if (IS_SYMOP (op)) {
+ OP_SYMBOL (op)->aop = NULL;
+ /* if the symbol has a spill */
+ if (SPIL_LOC (op))
+ SPIL_LOC (op)->aop = NULL;
+ }
+ }
}
/*-----------------------------------------------------------------*/
static char *
aopGet (asmop * aop, int offset)
{
- char *s = buffer;
- char *rs;
-
- /* offset is greater than
- size then zero */
- if (offset > (aop->size - 1) &&
- aop->type != AOP_LIT)
- return zero;
-
- /* depending on type */
- switch (aop->type)
- {
-
- case AOP_X:
- if (offset > aop->coff)
- {
- emitcode ("adiw", "%s,%d", aop->aopu.aop_ptr->name, offset - aop->coff);
- }
-
- if (offset < aop->coff)
- {
- emitcode ("sbiw", "%s,%d", aop->aopu.aop_ptr->name, aop->coff - offset);
- }
-
- aop->coff = offset;
- emitcode ("ld", "%s,x",
- (rs = ((offset & 1) ? "r25" : "r24")));
- return rs;
-
- case AOP_Z:
- if (aop->code)
- {
- if (offset > aop->coff)
- {
- emitcode ("adiw", "r30,%d", offset - aop->coff);
- }
- else
- {
- emitcode ("sbiw", "r30,%d", aop->coff - offset);
- }
- emitcode ("lpm", "%s,z", (rs = ((offset & 1) ? "r25" : "r24")));
- }
- else
- {
- /* we can use lds */
- if (offset > aop->coff)
- {
- emitcode ("ldd", "%s,z+%d", (rs = ((offset & 1) ? "r25" : "r24")),
- offset - aop->coff);
- }
- else
- {
- emitcode ("sbiw", "%s,%d", aop->aopu.aop_ptr->name, aop->coff - offset);
- aop->coff = offset;
- emitcode ("ld", "%s,z", (rs = ((offset & 1) ? "r25" : "r24")));
- }
- }
- return rs;
-
- case AOP_IMMD:
-
- emitcode ("lds", "%s,(%s)+%d",
- (rs = ((offset & 1) ? "r25" : "r24")),
- aop->aopu.aop_immd, offset);
- return rs;
-
- case AOP_DIR:
- emitcode ("lds", "%s,(%s)+%d",
- (rs = ((offset & 1) ? "r25" : "r24")),
- aop->aopu.aop_dir, offset);
- return rs;
-
- case AOP_REG:
- return aop->aopu.aop_reg[offset]->name;
-
- case AOP_CRY:
- assert ("cannot be in bit space AOP_CRY\n");
- break;
-
- case AOP_LIT:
- s = aopLiteral (aop->aopu.aop_lit, offset);
- emitcode ("ldi", "%s,lo8(%s)", (rs = ((offset & 1) ? "r24" : "r25")), s);
- return rs;
-
- case AOP_STR:
- aop->coff = offset;
- return aop->aopu.aop_str[offset];
-
- case AOP_STK_D:
- emitcode ("ldd", "%s,Y+%d",
- (rs = ((offset & 1) ? "r25" : "r24")),
- aop->aopu.aop_stk + offset);
- return rs;
- }
-
- werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "aopget got unsupported aop->type");
- exit (0);
+ char *s = buffer;
+ char *rs;
+
+ /* offset is greater than
+ size then zero */
+ if (offset > (aop->size - 1) && aop->type != AOP_LIT)
+ return zero;
+
+ /* depending on type */
+ switch (aop->type) {
+
+ case AOP_X:
+ if (offset > aop->coff) {
+ emitcode ("adiw", "%s,%d", aop->aopu.aop_ptr->name,
+ offset - aop->coff);
+ }
+
+ if (offset < aop->coff) {
+ emitcode ("sbiw", "%s,%d", aop->aopu.aop_ptr->name,
+ aop->coff - offset);
+ }
+
+ aop->coff = offset;
+ emitcode ("ld", "%s,x",
+ (rs = ((offset & 1) ? "r25" : "r24")));
+ return rs;
+
+ case AOP_Z:
+ if (aop->code) {
+ if (offset > aop->coff) {
+ emitcode ("adiw", "r30,%d",
+ offset - aop->coff);
+ }
+ else {
+ emitcode ("sbiw", "r30,%d",
+ aop->coff - offset);
+ }
+ emitcode ("lpm", "%s,z",
+ (rs = ((offset & 1) ? "r25" : "r24")));
+ }
+ else {
+ /* we can use lds */
+ if (offset > aop->coff) {
+ emitcode ("ldd", "%s,z+%d",
+ (rs =
+ ((offset & 1) ? "r25" : "r24")),
+ offset - aop->coff);
+ }
+ else {
+ emitcode ("sbiw", "%s,%d",
+ aop->aopu.aop_ptr->name,
+ aop->coff - offset);
+ aop->coff = offset;
+ emitcode ("ld", "%s,z",
+ (rs =
+ ((offset & 1) ? "r25" : "r24")));
+ }
+ }
+ return rs;
+
+ case AOP_IMMD:
+
+ emitcode ("lds", "%s,(%s)+%d",
+ (rs = ((offset & 1) ? "r25" : "r24")),
+ aop->aopu.aop_immd, offset);
+ return rs;
+
+ case AOP_DIR:
+ emitcode ("lds", "%s,(%s)+%d",
+ (rs = ((offset & 1) ? "r25" : "r24")),
+ aop->aopu.aop_dir, offset);
+ return rs;
+
+ case AOP_REG:
+ return aop->aopu.aop_reg[offset]->name;
+
+ case AOP_CRY:
+ assert ("cannot be in bit space AOP_CRY\n");
+ break;
+
+ case AOP_LIT:
+ s = aopLiteral (aop->aopu.aop_lit, offset);
+ emitcode ("ldi", "%s,<(%s)",
+ (rs = ((offset & 1) ? "r24" : "r25")), s);
+ return rs;
+
+ case AOP_STR:
+ aop->coff = offset;
+ return aop->aopu.aop_str[offset];
+
+ case AOP_STK_D:
+ emitcode ("ldd", "%s,Y+%d",
+ (rs = ((offset & 1) ? "r25" : "r24")),
+ aop->aopu.aop_stk + offset);
+ return rs;
+ }
+
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "aopget got unsupported aop->type");
+ exit (0);
}
+
/*-----------------------------------------------------------------*/
/* aopPut - puts a string for a aop */
/*-----------------------------------------------------------------*/
static void
aopPut (asmop * aop, char *s, int offset)
{
- char *d = buffer;
-
- if (aop->size && offset > (aop->size - 1))
- {
- werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "aopPut got offset > aop->size");
- exit (0);
- }
-
- /* will assign value to value */
- /* depending on where it is ofcourse */
- switch (aop->type)
- {
- case AOP_DIR:
- if (offset)
- {
- sprintf (d, "(%s)+%d", aop->aopu.aop_dir, offset);
- }
- else
- {
- sprintf (d, "%s", aop->aopu.aop_dir);
- }
-
- emitcode ("sts", "%s,%s", d, s);
- break;
-
- case AOP_REG:
- if (toupper (*s) != 'R')
- {
- if (s == zero)
- {
- emitcode ("clr", "%s", aop->aopu.aop_reg[offset]->name);
- }
- else
- {
- emitcode ("ldi", "r25,%s", s);
- emitcode ("mov", "%s,r35", aop->aopu.aop_reg[offset]->name);
- }
- }
- else
- {
- if (strcmp (aop->aopu.aop_reg[offset]->name, s))
- {
- emitcode ("mov", "%s,%s", aop->aopu.aop_reg[offset]->name, s);
- }
- }
- break;
-
- case AOP_X:
- if (offset > aop->coff)
- {
- emitcode ("adiw", "%s,%d", aop->aopu.aop_ptr->name, offset - aop->coff);
- }
-
- if (offset < aop->coff)
- {
- emitcode ("sbiw", "%s,%d", aop->aopu.aop_ptr->name, aop->coff - offset);
- }
-
- aop->coff = offset;
- emitcode ("st", "x,%s", s);
- break;
-
- case AOP_Z:
- if (aop->code)
- {
- if (offset > aop->coff)
- {
- emitcode ("adiw", "r30,%d", offset - aop->coff);
- }
- else
- {
- emitcode ("sbiw", "r30,%d", aop->coff - offset);
- }
- emitcode ("lpm", "%s,z", s);
- }
- else
- {
- /* we can use lds */
- if (offset > aop->coff)
- {
- emitcode ("sdd", "z+%d,%s", offset - aop->coff, s);
- }
- else
- {
- emitcode ("sbiw", "%s,%d", aop->aopu.aop_ptr->name, aop->coff - offset);
- aop->coff = offset;
- emitcode ("ld", "%s,z", s);
- }
- }
- break;
-
- case AOP_STK:
- emitcode ("push", "%s", s);
- break;
-
- case AOP_CRY:
- /* if used only for a condition code check */
- assert (toupper (*s) == 'R');
- if (offset == 0)
- {
- emitcode ("xrl", "r0,r0");
- emitcode ("cpi", "%s,0", s);
- }
- else
- {
- emitcode ("cpc", "r0,%s", s);
- }
- break;
-
- case AOP_STR:
- aop->coff = offset;
- if (strcmp (aop->aopu.aop_str[offset], s))
- emitcode ("mov", "%s,%s", aop->aopu.aop_str[offset], s);
- break;
-
- case AOP_STK_D:
- emitcode ("std", "y+%d,%s", offset, s);
- break;
-
- default:
- werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "aopPut got unsupported aop->type");
- exit (0);
- }
+ char *d = buffer;
-}
+ if (aop->size && offset > (aop->size - 1)) {
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "aopPut got offset > aop->size");
+ exit (0);
+ }
-/*-----------------------------------------------------------------*/
-/* reAdjustPreg - points a register back to where it should */
-/*-----------------------------------------------------------------*/
-static void
-reAdjustPreg (asmop * aop)
-{
- int size;
-
- aop->coff = 0;
- if ((size = aop->size) <= 1)
- return;
- size--;
- switch (aop->type)
- {
- case AOP_X:
- case AOP_Z:
- emitcode ("sbiw", "%s,%d", aop->aopu.aop_ptr->name, size);
- break;
- }
+ /* will assign value to value */
+ /* depending on where it is ofcourse */
+ switch (aop->type) {
+ case AOP_DIR:
+ if (offset) {
+ sprintf (d, "(%s)+%d", aop->aopu.aop_dir, offset);
+ }
+ else {
+ sprintf (d, "%s", aop->aopu.aop_dir);
+ }
+
+ emitcode ("sts", "%s,%s", d, s);
+ break;
+
+ case AOP_REG:
+ if (toupper ((unsigned char)*s) != 'R') {
+ if (s == zero) {
+ emitcode ("clr", "%s",
+ aop->aopu.aop_reg[offset]->name);
+ }
+ else {
+ emitcode ("ldi", "r25,%s", s);
+ emitcode ("mov", "%s,r35",
+ aop->aopu.aop_reg[offset]->name);
+ }
+ }
+ else {
+ if (strcmp (aop->aopu.aop_reg[offset]->name, s)) {
+ emitcode ("mov", "%s,%s",
+ aop->aopu.aop_reg[offset]->name, s);
+ }
+ }
+ break;
+
+ case AOP_X:
+ if (offset > aop->coff) {
+ emitcode ("adiw", "%s,%d", aop->aopu.aop_ptr->name,
+ offset - aop->coff);
+ }
+
+ if (offset < aop->coff) {
+ emitcode ("sbiw", "%s,%d", aop->aopu.aop_ptr->name,
+ aop->coff - offset);
+ }
+
+ aop->coff = offset;
+ emitcode ("st", "x,%s", s);
+ break;
+
+ case AOP_Z:
+ if (aop->code) {
+ if (offset > aop->coff) {
+ emitcode ("adiw", "r30,%d",
+ offset - aop->coff);
+ }
+ else {
+ emitcode ("sbiw", "r30,%d",
+ aop->coff - offset);
+ }
+ emitcode ("lpm", "%s,z", s);
+ }
+ else {
+ /* we can use lds */
+ if (offset > aop->coff) {
+ emitcode ("sdd", "z+%d,%s",
+ offset - aop->coff, s);
+ }
+ else {
+ emitcode ("sbiw", "%s,%d",
+ aop->aopu.aop_ptr->name,
+ aop->coff - offset);
+ aop->coff = offset;
+ emitcode ("ld", "%s,z", s);
+ }
+ }
+ break;
+
+ case AOP_STK:
+ emitcode ("push", "%s", s);
+ break;
+
+ case AOP_CRY:
+ /* if used only for a condition code check */
+ assert (toupper ((unsigned char)*s) == 'R');
+ if (offset == 0) {
+ emitcode ("xrl", "r0,r0");
+ emitcode ("cpi", "%s,0", s);
+ }
+ else {
+ emitcode ("cpc", "r0,%s", s);
+ }
+ break;
+
+ case AOP_STR:
+ aop->coff = offset;
+ if (strcmp (aop->aopu.aop_str[offset], s))
+ emitcode ("mov", "%s,%s", aop->aopu.aop_str[offset],
+ s);
+ break;
+
+ case AOP_STK_D:
+ emitcode ("std", "y+%d,%s", offset, s);
+ break;
+
+ default:
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "aopPut got unsupported aop->type");
+ exit (0);
+ }
}
#define IS_AOP_PREG(x) (AOP(x) && (AOP_TYPE(x) == AOP_X || \
AOP_TYPE(x) == AOP_Z))
#define AOP_INPREG(x) (x && (x->type == AOP_REG && \
- (x->aopu.aop_reg[0] == avr_regWithIdx(R26_IDX) || \
- x->aopu.aop_reg[0] == avr_regWithIdx(R30_IDX) )))
+ ((x->aopu.aop_reg[0] == avr_regWithIdx(R26_IDX) && x->aopu.aop_reg[1] == avr_regWithIdx(R27_IDX)) || \
+ (x->aopu.aop_reg[0] == avr_regWithIdx(R30_IDX) && x->aopu.aop_reg[1] == avr_regWithIdx(R31_IDX)) )))
+#define AOP_ISX(x) (x && (x->type == AOP_REG && \
+ ((x->aopu.aop_reg[0] == avr_regWithIdx(R26_IDX) && x->aopu.aop_reg[1] == avr_regWithIdx(R27_IDX)))))
+#define AOP_ISZ(x) (x && (x->type == AOP_REG && \
+ ((x->aopu.aop_reg[0] == avr_regWithIdx(R30_IDX) && x->aopu.aop_reg[1] == avr_regWithIdx(R31_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++);
- MOVR0 (l);
-
- while (size--)
- {
- emitcode ("or", "R0,%s", aopGet (op->aop, offset++));
- }
- tlbl = newiTempLabel (NULL);
-
- tlbl = newiTempLabel (NULL);
- aopPut (res->aop, zero, 1);
- emitcode ("cpi", "r0,0");
- emitcode ("breq", "L%05d", tlbl->key);
- aopPut (res->aop, one, 1);
- emitcode ("", "L%05d:", tlbl->key);
-
- size = res->aop->size - 2;
- offset = 2;
- /* put zeros in the rest */
- while (size--)
- aopPut (res->aop, zero, offset++);
+ 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++);
+ MOVR0 (l);
+
+ while (size--) {
+ emitcode ("or", "R0,%s", aopGet (op->aop, offset++));
+ }
+ tlbl = newiTempLabel (NULL);
+
+ tlbl = newiTempLabel (NULL);
+ aopPut (res->aop, zero, 1);
+ emitcode ("cpi", "r0,0");
+ emitcode ("breq", "L%05d", tlbl->key);
+ aopPut (res->aop, one, 1);
+ emitcode ("", "L%05d:", tlbl->key);
+
+ size = res->aop->size - 2;
+ offset = 2;
+ /* put zeros in the rest */
+ while (size--)
+ aopPut (res->aop, zero, offset++);
}
/*-----------------------------------------------------------------*/
static int
opIsGptr (operand * op)
{
- sym_link *type = operandType (op);
+ sym_link *type = operandType (op);
- if ((AOP_SIZE (op) == GPTRSIZE) && IS_GENPTR (type))
- {
- return 1;
- }
- return 0;
+ if ((AOP_SIZE (op) == GPTRSIZE) && IS_GENPTR (type)) {
+ return 1;
+ }
+ return 0;
}
/*-----------------------------------------------------------------*/
static int
getDataSize (operand * op)
{
- int size;
- size = AOP_SIZE (op);
- if (size == GPTRSIZE)
- {
- sym_link *type = operandType (op);
- if (IS_GENPTR (type))
- {
- /* generic pointer; arithmetic operations
- * should ignore the high byte (pointer type).
- */
- size--;
- }
- }
- return size;
-}
-
-/*-----------------------------------------------------------------*/
-/* outAcc - output Acc */
-/*-----------------------------------------------------------------*/
-static void
-outAcc (operand * result)
-{
- int size, offset;
- size = getDataSize (result);
- if (size)
- {
- aopPut (AOP (result), "r0", 0);
- size--;
- offset = 1;
- /* unsigned or positive */
- while (size--)
- {
- aopPut (AOP (result), zero, offset++);
- }
- }
-}
-
-/*-----------------------------------------------------------------*/
-/* outBitC - output a bit C */
-/*-----------------------------------------------------------------*/
-static void
-outBitC (operand * result)
-{
- emitcode ("clr", "r0");
- emitcode ("rol", "r0");
- outAcc (result);
+ int size;
+ size = AOP_SIZE (op);
+ if (size == GPTRSIZE) {
+ sym_link *type = operandType (op);
+ if (IS_GENPTR (type)) {
+ /* generic pointer; arithmetic operations
+ * should ignore the high byte (pointer type).
+ */
+ size--;
+ }
+ }
+ return size;
}
/*-----------------------------------------------------------------*/
static void
toBoolean (operand * oper, char *r, bool clr)
{
- int size = AOP_SIZE (oper);
- int offset = 0;
- if (clr)
- emitcode ("clr", "%s", r);
- while (size--)
- emitcode ("or", "%s,%s", r, aopGet (AOP (oper), offset++));
+ int size = AOP_SIZE (oper);
+ int offset = 0;
+ if (clr) {
+ emitcode ("clr", "%s", r);
+ while (size--)
+ emitcode ("or", "%s,%s", r, aopGet (AOP (oper), offset++));
+ } else {
+ size--;
+ emitcode("mov","%s,%s",r,aopGet (AOP (oper), offset++));
+ if (size) while (size--) emitcode ("or", "%s,%s", r, aopGet (AOP (oper), offset++));
+ }
}
static void
genNot (iCode * ic)
{
- symbol *tlbl;
- sym_link *optype = operandType (IC_LEFT (ic));
- int size, offset = 1;
-
- /* assign asmOps to operand & result */
- aopOp (IC_LEFT (ic), ic, FALSE);
- aopOp (IC_RESULT (ic), ic, TRUE);
-
- /* if type float then do float */
- if (IS_FLOAT (optype))
- {
- genNotFloat (IC_LEFT (ic), IC_RESULT (ic));
- goto release;
- }
- emitcode ("clr", "r0");
- tlbl = newiTempLabel (NULL);
- size = AOP_SIZE (IC_LEFT (ic));
- offset = 0;
- if (size == 1)
- {
- emitcode ("cpse", "%s,r0", aopGet (AOP (IC_LEFT (ic)), 0));
- }
- else
- {
- while (size--)
- {
- if (offset)
- emitcode ("cpc", "%s,r0", aopGet (AOP (IC_LEFT (ic)), offset));
- else
- emitcode ("cpi", "%s,0", aopGet (AOP (IC_LEFT (ic)), offset));
- offset++;
- }
- emitcode ("bne", "L%05d", tlbl->key);
- }
- emitcode ("ldi", "r0,1");
- emitcode ("", "L%05d:", tlbl->key);
- aopPut (AOP (IC_RESULT (ic)), "r0", 0);
- size = AOP_SIZE (IC_RESULT (ic)) - 1;
- offset = 1;
- while (size--)
- aopPut (AOP (IC_RESULT (ic)), zero, offset++);
-
-
-release:
- /* release the aops */
- freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? 0 : 1));
- freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ symbol *tlbl;
+ sym_link *optype = operandType (IC_LEFT (ic));
+ int size, offset = 1;
+
+ /* assign asmOps to operand & result */
+ aopOp (IC_LEFT (ic), ic, FALSE);
+ aopOp (IC_RESULT (ic), ic, TRUE);
+
+ /* if type float then do float */
+ if (IS_FLOAT (optype)) {
+ genNotFloat (IC_LEFT (ic), IC_RESULT (ic));
+ goto release;
+ }
+ emitcode ("clr", "r24");
+ tlbl = newiTempLabel (NULL);
+ size = AOP_SIZE (IC_LEFT (ic));
+ offset = 0;
+ if (size == 1) {
+ emitcode ("cpse", "%s,r24", aopGet (AOP (IC_LEFT (ic)), 0));
+ }
+ else {
+ while (size--) {
+ if (offset)
+ emitcode ("cpc", "%s,r24",
+ aopGet (AOP (IC_LEFT (ic)),
+ offset));
+ else
+ emitcode ("cpi", "%s,0",
+ aopGet (AOP (IC_LEFT (ic)),
+ offset));
+ offset++;
+ }
+ emitcode ("bne", "L%05d", tlbl->key);
+ }
+ emitcode ("ldi", "r24,1");
+ emitcode ("", "L%05d:", tlbl->key);
+ aopPut (AOP (IC_RESULT (ic)), "r24", 0);
+ size = AOP_SIZE (IC_RESULT (ic)) - 1;
+ offset = 1;
+ while (size--)
+ aopPut (AOP (IC_RESULT (ic)), zero, offset++);
+
+
+ release:
+ /* release the aops */
+ freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? 0 : 1));
+ freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
}
static void
genCpl (iCode * ic)
{
- int offset = 0;
- int size;
- int samer;
-
- /* assign asmOps to operand & result */
- aopOp (IC_LEFT (ic), ic, FALSE);
- aopOp (IC_RESULT (ic), ic, TRUE);
- samer = sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic)));
- size = AOP_SIZE (IC_RESULT (ic));
- while (size--)
- {
- char *l = aopGet (AOP (IC_LEFT (ic)), offset);
- if (samer)
- {
- emitcode ("com", "%s", l);
- }
- else
- {
- aopPut (AOP (IC_RESULT (ic)), l, offset);
- emitcode ("com", "%s", aopGet (AOP (IC_RESULT (ic)), offset));
- }
- offset++;
- }
-
- /* release the aops */
- freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? 0 : 1));
- freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ int offset = 0;
+ int size;
+ int samer;
+
+ /* assign asmOps to operand & result */
+ aopOp (IC_LEFT (ic), ic, FALSE);
+ aopOp (IC_RESULT (ic), ic, TRUE);
+ samer = sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic)));
+ size = AOP_SIZE (IC_RESULT (ic));
+ while (size--) {
+ char *l = aopGet (AOP (IC_LEFT (ic)), offset);
+ if (samer) {
+ emitcode ("com", "%s", l);
+ }
+ else {
+ aopPut (AOP (IC_RESULT (ic)), l, offset);
+ emitcode ("com", "%s",
+ aopGet (AOP (IC_RESULT (ic)), offset));
+ }
+ offset++;
+ }
+
+ /* release the aops */
+ freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? 0 : 1));
+ freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
static void
genUminusFloat (operand * op, operand * result)
{
- 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);
-
- emitcode ("ldi", "r24,0x80");
- if (sameRegs (AOP (op), AOP (result)))
- {
- emitcode ("eor", "%s,r24", l);
- }
- else
- {
- aopPut (AOP (result), l, 3);
- emitcode ("eor", "%s,r24", aopGet (AOP (result), 3));
- }
- while (size--)
- {
- aopPut (AOP (result), aopGet (AOP (op), offset), offset);
- offset++;
- }
+ 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);
+
+ emitcode ("ldi", "r24,0x80");
+ if (sameRegs (AOP (op), AOP (result))) {
+ emitcode ("eor", "%s,r24", l);
+ }
+ else {
+ aopPut (AOP (result), l, 3);
+ emitcode ("eor", "%s,r24", aopGet (AOP (result), 3));
+ }
+ while (size--) {
+ aopPut (AOP (result), aopGet (AOP (op), offset), offset);
+ offset++;
+ }
}
/*-----------------------------------------------------------------*/
static void
genUminus (iCode * ic)
{
- int offset, size;
- sym_link *optype, *rtype;
- int samer;
-
- /* assign asmops */
- aopOp (IC_LEFT (ic), ic, FALSE);
- aopOp (IC_RESULT (ic), ic, TRUE);
-
- optype = operandType (IC_LEFT (ic));
- rtype = operandType (IC_RESULT (ic));
-
- /* if float then do float stuff */
- if (IS_FLOAT (optype))
- {
- genUminusFloat (IC_LEFT (ic), IC_RESULT (ic));
- goto release;
- }
-
- /* otherwise subtract from zero */
- size = AOP_SIZE (IC_LEFT (ic));
- offset = 0;
- samer = sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic)));
- if (size == 1)
- {
- if (samer)
- {
- emitcode ("neg", "%s", aopGet (AOP (IC_LEFT (ic)), 0));
- }
- else
- {
- aopPut (AOP (IC_RESULT (ic)), aopGet (AOP (IC_LEFT (ic)), 0), 0);
- emitcode ("neg", "%s", aopGet (AOP (IC_RESULT (ic)), 0));
- }
- }
- else
- {
- offset = size - 1;
- while (size--)
- {
- char *l = aopGet (AOP (IC_LEFT (ic)), offset);
- if (!samer)
- {
- aopPut (AOP (IC_RESULT (ic)), l, offset);
- l = aopGet (AOP (IC_RESULT (ic)), offset);
- }
- if (offset)
- emitcode ("com", "%s", l);
- else
- emitcode ("neg", "%s", l);
- offset--;
- }
- size = AOP_SIZE (IC_LEFT (ic)) - 1;
- offset = 1;
- while (size--)
- {
- emitcode ("sbci", "%s,lo8(-1)", aopGet (AOP (IC_RESULT (ic)), offset++));
- }
- }
-
- /* if any remaining bytes in the result */
- /* we just need to propagate the sign */
- if ((size = (AOP_SIZE (IC_RESULT (ic)) - AOP_SIZE (IC_LEFT (ic)))))
- {
- symbol *tlbl = newiTempLabel (NULL);
- emitcode ("clr", "r0");
- emitcode ("brcc", "L%05d", tlbl->key);
- emitcode ("com", "r0");
- emitcode ("", "L%05d:", tlbl->key);
- while (size--)
- aopPut (AOP (IC_RESULT (ic)), "r0", offset++);
- }
-
-release:
- /* release the aops */
- freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? 0 : 1));
- freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ int offset, size;
+ sym_link *optype, *rtype;
+ int samer;
+
+ /* assign asmops */
+ aopOp (IC_LEFT (ic), ic, FALSE);
+ aopOp (IC_RESULT (ic), ic, TRUE);
+
+ optype = operandType (IC_LEFT (ic));
+ rtype = operandType (IC_RESULT (ic));
+
+ /* if float then do float stuff */
+ if (IS_FLOAT (optype)) {
+ genUminusFloat (IC_LEFT (ic), IC_RESULT (ic));
+ goto release;
+ }
+
+ /* otherwise subtract from zero */
+ size = AOP_SIZE (IC_LEFT (ic));
+ offset = 0;
+ samer = sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic)));
+ if (size == 1) {
+ if (samer) {
+ emitcode ("neg", "%s",
+ aopGet (AOP (IC_LEFT (ic)), 0));
+ }
+ else {
+ aopPut (AOP (IC_RESULT (ic)),
+ aopGet (AOP (IC_LEFT (ic)), 0), 0);
+ emitcode ("neg", "%s",
+ aopGet (AOP (IC_RESULT (ic)), 0));
+ }
+ }
+ else {
+ offset = size - 1;
+ while (size--) {
+ char *l = aopGet (AOP (IC_LEFT (ic)), offset);
+ if (!samer) {
+ aopPut (AOP (IC_RESULT (ic)), l, offset);
+ l = aopGet (AOP (IC_RESULT (ic)), offset);
+ }
+ if (offset)
+ emitcode ("com", "%s", l);
+ else
+ emitcode ("neg", "%s", l);
+ offset--;
+ }
+ size = AOP_SIZE (IC_LEFT (ic)) - 1;
+ offset = 1;
+ while (size--) {
+ emitcode ("sbci", "%s,0xff",
+ aopGet (AOP (IC_RESULT (ic)), offset++));
+ }
+ }
+
+ /* if any remaining bytes in the result */
+ /* we just need to propagate the sign */
+ if ((size = (AOP_SIZE (IC_RESULT (ic)) - AOP_SIZE (IC_LEFT (ic))))) {
+ symbol *tlbl = newiTempLabel (NULL);
+ emitcode ("clr", "r0");
+ emitcode ("brcc", "L%05d", tlbl->key);
+ emitcode ("com", "r0");
+ emitcode ("", "L%05d:", tlbl->key);
+ while (size--)
+ aopPut (AOP (IC_RESULT (ic)), "r0", offset++);
+ }
+
+ release:
+ /* release the aops */
+ freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? 0 : 1));
+ freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
static void
assignResultValue (operand * oper)
{
- int offset = 0;
- int size = AOP_SIZE (oper);
- while (size--)
- {
- aopPut (AOP (oper), fAVRReturn[offset], offset);
- offset++;
- }
+ int offset = 0;
+ int size = AOP_SIZE (oper);
+ while (size--) {
+ aopPut (AOP (oper), fAVRReturn[offset], offset);
+ offset++;
+ }
}
/*-----------------------------------------------------------------*/
static void
saveZreg (iCode * ic)
{
- /* only if live accross this call */
- if (ic->regsSaved == 0 &&
- (bitVectBitValue (ic->rMask, R30_IDX) ||
- bitVectBitValue (ic->rMask, R31_IDX)))
- {
- ic->regsSaved = 1;
- emitcode ("push", "r30");
- emitcode ("push", "r31");
- }
+ /* only if live accross this call */
+ if (ic->regsSaved == 0 &&
+ (bitVectBitValue (ic->rMask, R30_IDX) ||
+ bitVectBitValue (ic->rMask, R31_IDX))) {
+ ic->regsSaved = 1;
+ emitcode ("push", "r30");
+ emitcode ("push", "r31");
+ }
}
/*-----------------------------------------------------------------*/
static void
popZreg (iCode * ic)
{
- if (ic->regsSaved)
- {
- emitcode ("pop", "r31");
- emitcode ("pop", "r30");
- }
+ if (ic->regsSaved) {
+ emitcode ("pop", "r31");
+ emitcode ("pop", "r30");
+ }
}
/*-----------------------------------------------------------------*/
static void
genIpush (iCode * ic)
{
- int size, offset = 0;
- char *l;
+ int size, offset = 0;
+ char *l;
- if (!ic->parmPush)
- {
- /* and the item is spilt then do nothing */
- if (OP_SYMBOL (IC_LEFT (ic))->isspilt)
- return;
- }
- else
- {
- iCode *lic;
- for (lic = ic->next; lic; lic = lic->next)
- if (lic->op == PCALL)
- break;
- if (lic)
- saveZreg (lic);
- }
-
- /* this is a paramter push */
- aopOp (IC_LEFT (ic), ic, FALSE);
- size = AOP_SIZE (IC_LEFT (ic));
- while (size--)
- {
- l = aopGet (AOP (IC_LEFT (ic)), offset++);
- emitcode ("push", "%s", l);
- }
-
- freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
+ if (!ic->parmPush) {
+ /* and the item is spilt then do nothing */
+ if (OP_SYMBOL (IC_LEFT (ic))->isspilt)
+ return;
+ }
+ else {
+ iCode *lic;
+ for (lic = ic->next; lic; lic = lic->next)
+ if (lic->op == PCALL)
+ break;
+ if (lic)
+ saveZreg (lic);
+ }
+
+ /* this is a paramter push */
+ aopOp (IC_LEFT (ic), ic, FALSE);
+ size = AOP_SIZE (IC_LEFT (ic));
+ while (size--) {
+ l = aopGet (AOP (IC_LEFT (ic)), offset++);
+ emitcode ("push", "%s", l);
+ }
+
+ freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
static void
genIpop (iCode * ic)
{
- int size, offset;
+ int size, offset;
- /* if the temp was not pushed then */
- if (OP_SYMBOL (IC_LEFT (ic))->isspilt)
- return;
+ /* if the temp was not pushed then */
+ if (OP_SYMBOL (IC_LEFT (ic))->isspilt)
+ return;
- aopOp (IC_LEFT (ic), ic, FALSE);
- size = AOP_SIZE (IC_LEFT (ic));
- offset = (size - 1);
- while (size--)
- emitcode ("pop", "%s", aopGet (AOP (IC_LEFT (ic)), offset--));
+ aopOp (IC_LEFT (ic), ic, FALSE);
+ size = AOP_SIZE (IC_LEFT (ic));
+ offset = (size - 1);
+ while (size--)
+ emitcode ("pop", "%s", aopGet (AOP (IC_LEFT (ic)), offset--));
- freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
+ freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
genCall (iCode * ic)
{
- /* if send set is not empty the assign */
- if (_G.sendSet)
- {
- iCode *sic;
- int rnum = 16;
- 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);
- char *b = buffer;
- sprintf (buffer, "r%d", rnum++);
- if (strcmp (l, b))
- emitcode ("mov", "%s,%s", b, l);
- offset++;
- }
- freeAsmop (IC_LEFT (sic), NULL, sic, TRUE);
- }
- _G.sendSet = NULL;
- }
- /* make the call */
- emitcode ("call", "%s", (OP_SYMBOL (IC_LEFT (ic))->rname[0] ?
- OP_SYMBOL (IC_LEFT (ic))->rname :
- OP_SYMBOL (IC_LEFT (ic))->name));
-
- /* if we need assign a result value */
- if ((IS_ITEMP (IC_RESULT (ic)) &&
- (OP_SYMBOL (IC_RESULT (ic))->nRegs ||
- OP_SYMBOL (IC_RESULT (ic))->spildir)) ||
- IS_TRUE_SYMOP (IC_RESULT (ic)))
- {
-
- aopOp (IC_RESULT (ic), ic, FALSE);
- assignResultValue (IC_RESULT (ic));
- freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
- }
-
- /* adjust the stack for parameters if required */
- if (IC_LEFT (ic)->parmBytes)
- {
- if (IC_LEFT (ic)->parmBytes > 63)
- {
- emitcode ("sbiw", "r28,%d", IC_LEFT (ic)->parmBytes);
- }
- else
- {
- emitcode ("subi", "r28,lo8(%d)", IC_LEFT (ic)->parmBytes);
- emitcode ("sbci", "r29,hi8(%d)", IC_LEFT (ic)->parmBytes);
- }
- }
+ /* if send set is not empty then assign */
+ if (_G.sendSet) {
+ iCode *sic;
+ int rnum = 16;
+ 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);
+ char *b = buffer;
+ sprintf (buffer, "r%d", rnum++);
+ if (strcmp (l, b))
+ emitcode ("mov", "%s,%s", b, l);
+ offset++;
+ }
+ freeAsmop (IC_LEFT (sic), NULL, sic, TRUE);
+ }
+ _G.sendSet = NULL;
+ }
+ /* make the call */
+ emitcode ("call", "%s", (OP_SYMBOL (IC_LEFT (ic))->rname[0] ?
+ OP_SYMBOL (IC_LEFT (ic))->rname :
+ OP_SYMBOL (IC_LEFT (ic))->name));
+
+ /* if we need assign a result value */
+ if ((IS_ITEMP (IC_RESULT (ic)) &&
+ (OP_SYMBOL (IC_RESULT (ic))->nRegs ||
+ OP_SYMBOL (IC_RESULT (ic))->spildir)) ||
+ IS_TRUE_SYMOP (IC_RESULT (ic))) {
+
+ aopOp (IC_RESULT (ic), ic, FALSE);
+ assignResultValue (IC_RESULT (ic));
+ freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ }
+
+ /* adjust the stack for parameters if required */
+ if (ic->parmBytes) {
+ if (ic->parmBytes > 63) {
+ emitcode ("sbiw", "r28,%d", ic->parmBytes);
+ }
+ else {
+ emitcode ("subi", "r28,<(%d)",
+ ic->parmBytes);
+ emitcode ("sbci", "r29,>(%d)",
+ ic->parmBytes);
+ }
+ }
}
genPcall (iCode * ic)
{
- if (!ic->regsSaved)
- saveZreg (ic);
-
- aopOp (IC_LEFT (ic), ic, FALSE);
- emitcode ("mov", "r30", aopGet (AOP (IC_LEFT (ic)), 0));
- emitcode ("mov", "r31", aopGet (AOP (IC_RIGHT (ic)), 0));
- freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
-
- /* if send set is not empty the assign */
- if (_G.sendSet)
- {
- iCode *sic;
- int rnum = 16;
- 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);
- char *b = buffer;
- sprintf (b, "r%d", rnum++);
- if (strcmp (l, b))
- emitcode ("mov", "%s,%s", b, l);
- offset++;
- }
- freeAsmop (IC_LEFT (sic), NULL, sic, TRUE);
- }
- _G.sendSet = NULL;
- }
-
- emitcode ("icall", "");
-
- /* if we need assign a result value */
- if ((IS_ITEMP (IC_RESULT (ic)) &&
- (OP_SYMBOL (IC_RESULT (ic))->nRegs ||
- OP_SYMBOL (IC_RESULT (ic))->spildir)) ||
- IS_TRUE_SYMOP (IC_RESULT (ic)))
- {
-
- aopOp (IC_RESULT (ic), ic, FALSE);
-
- assignResultValue (IC_RESULT (ic));
- freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
- }
-
- /* adjust the stack for parameters if
- required */
- if (IC_LEFT (ic)->parmBytes)
- {
- int i;
- if (IC_LEFT (ic)->parmBytes > 3)
- {
- emitcode ("mov", "a,%s", spname);
- emitcode ("add", "a,#0x%02x", (-IC_LEFT (ic)->parmBytes) & 0xff);
- emitcode ("mov", "%s,a", spname);
- }
- else
- for (i = 0; i < IC_LEFT (ic)->parmBytes; i++)
- emitcode ("dec", "%s", spname);
-
- }
-
- /* adjust the stack for parameters if required */
- if (IC_LEFT (ic)->parmBytes)
- {
- if (IC_LEFT (ic)->parmBytes > 63)
- {
- emitcode ("sbiw", "r28,%d", IC_LEFT (ic)->parmBytes);
- }
- else
- {
- emitcode ("subi", "r28,lo8(%d)", IC_LEFT (ic)->parmBytes);
- emitcode ("sbci", "r29,hi8(%d)", IC_LEFT (ic)->parmBytes);
- }
- }
- if (ic->regsSaved)
- popZreg (ic);
+ if (!ic->regsSaved)
+ saveZreg (ic);
+
+ aopOp (IC_LEFT (ic), ic, FALSE);
+ emitcode ("mov", "r30", aopGet (AOP (IC_LEFT (ic)), 0));
+ emitcode ("mov", "r31", aopGet (AOP (IC_RIGHT (ic)), 0));
+ freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
+
+ /* if send set is not empty the assign */
+ if (_G.sendSet) {
+ iCode *sic;
+ int rnum = 16;
+ 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);
+ char *b = buffer;
+ sprintf (b, "r%d", rnum++);
+ if (strcmp (l, b))
+ emitcode ("mov", "%s,%s", b, l);
+ offset++;
+ }
+ freeAsmop (IC_LEFT (sic), NULL, sic, TRUE);
+ }
+ _G.sendSet = NULL;
+ }
+
+ emitcode ("icall", "");
+
+ /* if we need assign a result value */
+ if ((IS_ITEMP (IC_RESULT (ic)) &&
+ (OP_SYMBOL (IC_RESULT (ic))->nRegs ||
+ OP_SYMBOL (IC_RESULT (ic))->spildir)) ||
+ IS_TRUE_SYMOP (IC_RESULT (ic))) {
+
+ aopOp (IC_RESULT (ic), ic, FALSE);
+
+ assignResultValue (IC_RESULT (ic));
+ freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ }
+
+ /* adjust the stack for parameters if
+ required */
+ if (ic->parmBytes) {
+ int i;
+ if (ic->parmBytes > 3) {
+ emitcode ("mov", "a,%s", spname);
+ emitcode ("add", "a,#0x%02x",
+ (-ic->parmBytes) & 0xff);
+ emitcode ("mov", "%s,a", spname);
+ }
+ else
+ for (i = 0; i < ic->parmBytes; i++)
+ emitcode ("dec", "%s", spname);
+
+ }
+
+ /* adjust the stack for parameters if required */
+ if (ic->parmBytes) {
+ if (ic->parmBytes > 63) {
+ emitcode ("sbiw", "r28,%d", ic->parmBytes);
+ }
+ else {
+ emitcode ("subi", "r28,<(%d)",
+ ic->parmBytes);
+ emitcode ("sbci", "r29,>(%d)",
+ ic->parmBytes);
+ }
+ }
+ if (ic->regsSaved)
+ popZreg (ic);
}
/*-----------------------------------------------------------------*/
static int
resultRemat (iCode * ic)
{
- if (SKIP_IC (ic) || ic->op == IFX)
- return 0;
+ if (SKIP_IC (ic) || ic->op == IFX)
+ return 0;
- if (IC_RESULT (ic) && IS_ITEMP (IC_RESULT (ic)))
- {
- symbol *sym = OP_SYMBOL (IC_RESULT (ic));
- if (sym->remat && !POINTER_SET (ic))
- return 1;
- }
+ if (IC_RESULT (ic) && IS_ITEMP (IC_RESULT (ic))) {
+ symbol *sym = OP_SYMBOL (IC_RESULT (ic));
+ if (sym->remat && !POINTER_SET (ic))
+ return 1;
+ }
- return 0;
+ return 0;
}
#if defined(__BORLANDC__) || defined(_MSC_VER)
#define STRCASECMP strcasecmp
#endif
-/*-----------------------------------------------------------------*/
-/* inExcludeList - return 1 if the string is in exclude Reg list */
-/*-----------------------------------------------------------------*/
-static bool
-inExcludeList (char *s)
-{
- int i = 0;
-
- if (options.excludeRegs[i] &&
- STRCASECMP (options.excludeRegs[i], "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;
-}
-
/*-----------------------------------------------------------------*/
/* genFunction - generated code for function entry */
/*-----------------------------------------------------------------*/
static void
genFunction (iCode * ic)
{
- symbol *sym;
- sym_link *fetype;
- int i = 0;
-
- _G.nRegsSaved = 0;
- /* create the function header */
- emitcode (";", "-----------------------------------------");
- emitcode (";", " function %s", (sym = OP_SYMBOL (IC_LEFT (ic)))->name);
- emitcode (";", "-----------------------------------------");
-
- emitcode ("", "%s:", sym->rname);
- fetype = getSpec (operandType (IC_LEFT (ic)));
-
- /* if critical function then turn interrupts off */
- if (SPEC_CRTCL (fetype))
- emitcode ("cli", "");
-
- if (IS_ISR (sym->etype))
- {
- }
-
- /* save the preserved registers that are used in this function */
- for (i = R2_IDX; i <= R15_IDX; i++)
- {
- if (bitVectBitValue (sym->regsUsed, i))
- {
- _G.nRegsSaved++;
- emitcode ("push", "%s", avr_regWithIdx (i)->name);
- }
- }
- /* now for the pointer registers */
- if (bitVectBitValue (sym->regsUsed, R26_IDX))
- {
- _G.nRegsSaved++;
- emitcode ("push", "r26");
- }
- if (bitVectBitValue (sym->regsUsed, R27_IDX))
- {
- _G.nRegsSaved++;
- emitcode ("push", "r27");
- }
- if (bitVectBitValue (sym->regsUsed, R30_IDX))
- {
- _G.nRegsSaved++;
- emitcode ("push", "r30");
- }
- if (bitVectBitValue (sym->regsUsed, R31_IDX))
- {
- _G.nRegsSaved++;
- emitcode ("push", "r31");
- }
- /* adjust the stack for the function */
- if (sym->stack)
- {
- emitcode ("push", "r28");
- emitcode ("push", "r29");
- emitcode ("in", "r28,__SP_L__");
- emitcode ("in", "r29,__SP_H__");
- if (sym->stack <= 63)
- {
- emitcode ("sbiw", "r28,%d", sym->stack);
- }
- else
- {
- emitcode ("subi", "r28,lo8(%d)", sym->stack);
- emitcode ("sbci", "r29,hi8(%d)", sym->stack);
- }
- emitcode ("out", "__SP_L__,r28");
- emitcode ("out", "__SP_H__,r29");
- }
+ symbol *sym;
+ sym_link *ftype;
+ int i = 0;
+
+ _G.nRegsSaved = 0;
+ /* create the function header */
+ emitcode (";", "-----------------------------------------");
+ emitcode (";", " function %s",
+ (sym = OP_SYMBOL (IC_LEFT (ic)))->name);
+ emitcode (";", "-----------------------------------------");
+
+ emitcode ("", "%s:", sym->rname);
+ ftype = operandType (IC_LEFT (ic));
+
+ /* if critical function then turn interrupts off */
+ if (IFFUNC_ISCRITICAL (ftype))
+ emitcode ("cli", "");
+
+ if (IFFUNC_ISISR (sym->type)) {
+ }
+
+ /* save the preserved registers that are used in this function */
+ for (i = R2_IDX; i <= R15_IDX; i++) {
+ if (bitVectBitValue (sym->regsUsed, i)) {
+ _G.nRegsSaved++;
+ emitcode ("push", "%s", avr_regWithIdx (i)->name);
+ }
+ }
+ /* now for the pointer registers */
+ if (bitVectBitValue (sym->regsUsed, R26_IDX)) {
+ _G.nRegsSaved++;
+ emitcode ("push", "r26");
+ }
+ if (bitVectBitValue (sym->regsUsed, R27_IDX)) {
+ _G.nRegsSaved++;
+ emitcode ("push", "r27");
+ }
+ if (bitVectBitValue (sym->regsUsed, R30_IDX)) {
+ _G.nRegsSaved++;
+ emitcode ("push", "r30");
+ }
+ if (bitVectBitValue (sym->regsUsed, R31_IDX)) {
+ _G.nRegsSaved++;
+ emitcode ("push", "r31");
+ }
+ /* adjust the stack for the function */
+ if (sym->stack) {
+ emitcode ("push", "r28");
+ emitcode ("push", "r29");
+ emitcode ("in", "r28,__SP_L__");
+ emitcode ("in", "r29,__SP_H__");
+ if (sym->stack <= 63) {
+ emitcode ("sbiw", "r28,%d", sym->stack);
+ }
+ else {
+ emitcode ("subi", "r28,<(%d)", sym->stack);
+ emitcode ("sbci", "r29,>(%d)", sym->stack);
+ }
+ emitcode ("out", "__SP_L__,r28");
+ emitcode ("out", "__SP_H__,r29");
+ }
}
/*-----------------------------------------------------------------*/
static void
genEndFunction (iCode * ic)
{
- symbol *sym = OP_SYMBOL (IC_LEFT (ic));
- int i;
-
- /* restore stack pointer */
- if (sym->stack)
- {
- if (sym->stack <= 63)
- {
- emitcode ("adiw", "r28,%d", sym->stack);
- }
- else
- {
- emitcode ("subi", "r28,lo8(-%d)", sym->stack);
- emitcode ("sbci", "r29,hi8(-%d)", sym->stack);
- }
- emitcode ("out", "__SP_L__,r28");
- emitcode ("out", "__SP_H__,r29");
-
- /* pop frame pointer */
- emitcode ("pop", "r29");
- emitcode ("pop", "r28");
- }
- /* restore preserved registers */
- if (bitVectBitValue (sym->regsUsed, R31_IDX))
- {
- _G.nRegsSaved--;
- emitcode ("pop", "r31");
- }
- if (bitVectBitValue (sym->regsUsed, R30_IDX))
- {
- _G.nRegsSaved--;
- emitcode ("pop", "r30");
- }
- if (bitVectBitValue (sym->regsUsed, R27_IDX))
- {
- _G.nRegsSaved--;
- emitcode ("push", "r27");
- }
- if (bitVectBitValue (sym->regsUsed, R26_IDX))
- {
- _G.nRegsSaved--;
- emitcode ("push", "r26");
- }
- for (i = R15_IDX; i >= R2_IDX; i--)
- {
- if (bitVectBitValue (sym->regsUsed, i))
- {
- _G.nRegsSaved--;
- emitcode ("pop", "%s", avr_regWithIdx (i)->name);
- }
- }
-
- if (SPEC_CRTCL (sym->etype))
- emitcode ("sti", "");
-
- if (IS_ISR (sym->etype))
- {
- emitcode ("rti", "");
- }
- else
- {
- emitcode ("ret", "");
- }
+ symbol *sym = OP_SYMBOL (IC_LEFT (ic));
+ int i;
+
+ /* restore stack pointer */
+ if (sym->stack) {
+ if (sym->stack <= 63) {
+ emitcode ("adiw", "r28,%d", sym->stack);
+ }
+ else {
+ emitcode ("subi", "r28,<(-%d)", sym->stack);
+ emitcode ("sbci", "r29,>(-%d)", sym->stack);
+ }
+ emitcode ("out", "__SP_L__,r28");
+ emitcode ("out", "__SP_H__,r29");
+
+ /* pop frame pointer */
+ emitcode ("pop", "r29");
+ emitcode ("pop", "r28");
+ }
+ /* restore preserved registers */
+ if (bitVectBitValue (sym->regsUsed, R31_IDX)) {
+ _G.nRegsSaved--;
+ emitcode ("pop", "r31");
+ }
+ if (bitVectBitValue (sym->regsUsed, R30_IDX)) {
+ _G.nRegsSaved--;
+ emitcode ("pop", "r30");
+ }
+ if (bitVectBitValue (sym->regsUsed, R27_IDX)) {
+ _G.nRegsSaved--;
+ emitcode ("pop", "r27");
+ }
+ if (bitVectBitValue (sym->regsUsed, R26_IDX)) {
+ _G.nRegsSaved--;
+ emitcode ("pop", "r26");
+ }
+ for (i = R15_IDX; i >= R2_IDX; i--) {
+ if (bitVectBitValue (sym->regsUsed, i)) {
+ _G.nRegsSaved--;
+ emitcode ("pop", "%s", avr_regWithIdx (i)->name);
+ }
+ }
+
+ if (IFFUNC_ISCRITICAL (sym->type))
+ emitcode ("sti", "");
+
+ if (options.debug && currFunc) {
+ debugFile->writeEndFunction (currFunc, ic, 1);
+ }
+
+ if (IFFUNC_ISISR (sym->type)) {
+ emitcode ("rti", "");
+ }
+ else {
+ emitcode ("ret", "");
+ }
}
static void
genRet (iCode * ic)
{
- int size, offset = 0;
-
- /* if we have no return value then
- just generate the "ret" */
- if (!IC_LEFT (ic))
- goto jumpret;
-
- /* we have something to return then
- move the return value into place */
- aopOp (IC_LEFT (ic), ic, FALSE);
- size = AOP_SIZE (IC_LEFT (ic));
-
- while (size--)
- {
- if (AOP_TYPE (IC_LEFT (ic)) == AOP_LIT)
- {
- emitcode ("ldi", "%s,%s(%d)", fAVRReturn[offset], larray[offset],
- (int) floatFromVal (AOP (IC_LEFT (ic))->aopu.aop_lit), offset);
- }
- else
- {
- char *l;
- l = aopGet (AOP (IC_LEFT (ic)), offset);
- if (strcmp (fAVRReturn[offset], l))
- emitcode ("mov", "%s,%s", fAVRReturn[offset], l);
+ int size, offset = 0;
+
+ /* if we have no return value then
+ just generate the "ret" */
+ if (!IC_LEFT (ic))
+ goto jumpret;
+
+ /* we have something to return then
+ move the return value into place */
+ aopOp (IC_LEFT (ic), ic, FALSE);
+ size = AOP_SIZE (IC_LEFT (ic));
+
+ while (size--) {
+ if (AOP_TYPE (IC_LEFT (ic)) == AOP_LIT) {
+ emitcode ("ldi", "%s,%s(%d)", fAVRReturn[offset],
+ larray[offset],
+ (int) floatFromVal (AOP (IC_LEFT (ic))->
+ aopu.aop_lit), offset);
+ }
+ else {
+ char *l;
+ l = aopGet (AOP (IC_LEFT (ic)), offset);
+ if (strcmp (fAVRReturn[offset], l))
+ emitcode ("mov", "%s,%s", fAVRReturn[offset],
+ l);
+ }
+ offset++;
}
- offset++;
- }
- freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
+ freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
-jumpret:
- /* generate a jump to the return label
- if the next is not the return statement */
- if (!(ic->next && ic->next->op == LABEL &&
- IC_LABEL (ic->next) == returnLabel))
+ jumpret:
+ /* generate a jump to the return label
+ if the next is not the return statement */
+ if (!(ic->next && ic->next->op == LABEL &&
+ IC_LABEL (ic->next) == returnLabel))
- emitcode ("rjmp", "L%05d", returnLabel->key);
+ emitcode ("rjmp", "L%05d", returnLabel->key);
}
static void
genLabel (iCode * ic)
{
- /* special case never generate */
- if (IC_LABEL (ic) == entryLabel)
- return;
+ /* special case never generate */
+ if (IC_LABEL (ic) == entryLabel)
+ return;
- emitcode ("", "L%05d:", IC_LABEL (ic)->key);
+ emitcode ("", "L%05d:", IC_LABEL (ic)->key);
}
/*-----------------------------------------------------------------*/
static void
genGoto (iCode * ic)
{
- emitcode ("rjmp", "L%05d:", (IC_LABEL (ic)->key + 100));
+ emitcode ("rjmp", "L%05d", (IC_LABEL (ic)->key));
}
/*-----------------------------------------------------------------*/
-/* findLabelBackwards: walks back through the iCode chain looking */
-/* for the given label. Returns number of iCode instructions */
-/* between that label and given ic. */
-/* Returns zero if label not found. */
+/* genPlusIncr :- does addition with increment if possible */
/*-----------------------------------------------------------------*/
-static int
-findLabelBackwards (iCode * ic, int key)
+static bool
+genPlusIncr (iCode * ic)
{
- int count = 0;
-
- while (ic->prev)
- {
- ic = ic->prev;
- count++;
+ unsigned int icount;
+ int offset = 0;
+
+ /* will try to generate an increment */
+ /* if the right side is not a literal
+ we cannot */
+ if (AOP_TYPE (IC_RIGHT (ic)) != AOP_LIT)
+ return FALSE;
+
+ icount = (unsigned int) floatFromVal (AOP (IC_RIGHT (ic))->aopu.
+ aop_lit);
+
+ /* if the sizes are greater than 2 or they are not the same regs
+ then we cannot */
+ if (!sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))))
+ return FALSE;
+
+ /* so we know LEFT & RESULT in the same registers and add
+ amount <= 63 */
+ /* for short & char types */
+ if (AOP_SIZE (IC_RESULT (ic)) < 2) {
+ if (icount == 1) {
+ emitcode ("inc", "%s",
+ aopGet (AOP (IC_LEFT (ic)), 0));
+ return TRUE;
+ }
+ if (AOP_ISHIGHREG( AOP (IC_LEFT (ic)),0)) {
+ emitcode ("subi", "%s,<(%d)",
+ aopGet (AOP (IC_LEFT (ic)), 0), 0-icount);
+ return TRUE;
+ }
+ }
- if (ic->op == LABEL && IC_LABEL (ic)->key == key)
- {
- /* printf("findLabelBackwards = %d\n", count); */
- return count;
+ for (offset = 0 ; offset < AOP_SIZE(IC_RESULT(ic)) ; offset++) {
+ if (!(AOP_ISHIGHREG(AOP(IC_RESULT(ic)),offset))) return FALSE;
}
- }
- return 0;
-}
+ if (AOP_SIZE (IC_RESULT (ic)) <= 3) {
+ /* if register pair and starts with 26/30 then adiw */
+ if (isRegPair (AOP (IC_RESULT (ic))) && icount > 0
+ && icount < 64
+ && (IS_REGIDX (AOP (IC_RESULT (ic)), R26_IDX) ||
+ IS_REGIDX (AOP (IC_RESULT (ic)), R24_IDX) ||
+ IS_REGIDX (AOP (IC_RESULT (ic)), R30_IDX))) {
+ emitcode ("adiw", "%s,%d",
+ aopGet (AOP (IC_RESULT (ic)), 0), icount);
+ return TRUE;
+ }
-/*-----------------------------------------------------------------*/
-/* genPlusIncr :- does addition with increment if possible */
-/*-----------------------------------------------------------------*/
-static bool
-genPlusIncr (iCode * ic)
-{
- unsigned int icount;
-
- /* will try to generate an increment */
- /* if the right side is not a literal
- we cannot */
- if (AOP_TYPE (IC_RIGHT (ic)) != AOP_LIT)
- return FALSE;
-
- icount = (unsigned int) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit);
-
- /* if the sizes are greater than 2 or they are not the same regs
- then we cannot */
- if (!sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))))
- return FALSE;
-
- /* so we know LEFT & RESULT in the same registers and add
- amount <= 63 */
- /* for short & char types */
- if (AOP_SIZE (IC_RESULT (ic)) < 2)
- {
- if (icount == 1)
- {
- emitcode ("inc", "%s", aopGet (AOP (IC_LEFT (ic)), 0));
- return TRUE;
- }
- emitcode ("subi", "%s,lo8(%d)", aopGet (AOP (IC_LEFT (ic)), 0), -icount);
- return TRUE;
- }
-
- if (AOP_SIZE (IC_RESULT (ic)) <= 3)
- {
- /* if register pair and starts with 26/30 then adiw */
- if (isRegPair (AOP (IC_RESULT (ic))) && icount > 0 && icount < 64 &&
- (IS_REGIDX (AOP (IC_RESULT (ic)), R26_IDX) ||
- IS_REGIDX (AOP (IC_RESULT (ic)), R30_IDX)))
- {
- emitcode ("adiw", "%s,%d", aopGet (AOP (IC_RESULT (ic)), 0), icount);
- return TRUE;
- }
-
- /* use subi */
- emitcode ("subi", "%s,lo8(%d)", aopGet (AOP (IC_RESULT (ic)), 0), -icount);
- emitcode ("sbci", "%s,hi8(%d)", aopGet (AOP (IC_RESULT (ic)), 1), -icount);
- return TRUE;
- }
-
- /* for 32 bit longs */
- emitcode ("subi", "%s,lo8(%d)", aopGet (AOP (IC_RESULT (ic)), 0), -icount);
- emitcode ("sbci", "%s,hi8(%d)", aopGet (AOP (IC_RESULT (ic)), 1), -icount);
- emitcode ("sbci", "%s,hlo8(%d)", aopGet (AOP (IC_RESULT (ic)), 2), -icount);
- emitcode ("sbci", "%s,hhi8(%d)", aopGet (AOP (IC_RESULT (ic)), 3), -icount);
- return TRUE;
+ /* use subi */
+ emitcode ("subi", "%s,<(%d)",
+ aopGet (AOP (IC_RESULT (ic)), 0), 0-icount);
+ emitcode ("sbci", "%s,>(%d)",
+ aopGet (AOP (IC_RESULT (ic)), 1), 0-icount);
+ return TRUE;
+ }
+
+ /* for 32 bit longs */
+ emitcode ("subi", "%s,<(%d)", aopGet (AOP (IC_RESULT (ic)), 0),
+ 0-icount);
+ emitcode ("sbci", "%s,>(%d)", aopGet (AOP (IC_RESULT (ic)), 1),
+ 0-icount);
+ emitcode ("sbci", "%s,hlo8(%d)", aopGet (AOP (IC_RESULT (ic)), 2),
+ 0-icount);
+ emitcode ("sbci", "%s,hhi8(%d)", aopGet (AOP (IC_RESULT (ic)), 3),
+ 0-icount);
+ return TRUE;
}
static void
adjustArithmeticResult (iCode * ic)
{
- if (opIsGptr (IC_RESULT (ic)) &&
- opIsGptr (IC_LEFT (ic)) &&
- !sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic))))
- {
- aopPut (AOP (IC_RESULT (ic)),
- aopGet (AOP (IC_LEFT (ic)), GPTRSIZE - 1),
- GPTRSIZE - 1);
- }
-
- if (opIsGptr (IC_RESULT (ic)) &&
- opIsGptr (IC_RIGHT (ic)) &&
- !sameRegs (AOP (IC_RESULT (ic)), AOP (IC_RIGHT (ic))))
- {
- aopPut (AOP (IC_RESULT (ic)),
- aopGet (AOP (IC_RIGHT (ic)), GPTRSIZE - 1),
- GPTRSIZE - 1);
- }
-
- if (opIsGptr (IC_RESULT (ic)) &&
- AOP_SIZE (IC_LEFT (ic)) < GPTRSIZE &&
- AOP_SIZE (IC_RIGHT (ic)) < GPTRSIZE &&
- !sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic))) &&
- !sameRegs (AOP (IC_RESULT (ic)), AOP (IC_RIGHT (ic))))
- {
- char buffer[5];
- sprintf (buffer, "%d", pointerCode (getSpec (operandType (IC_LEFT (ic)))));
- aopPut (AOP (IC_RESULT (ic)), buffer, GPTRSIZE - 1);
- }
+ if (opIsGptr (IC_RESULT (ic)) &&
+ opIsGptr (IC_LEFT (ic)) &&
+ !sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic)))) {
+ aopPut (AOP (IC_RESULT (ic)),
+ aopGet (AOP (IC_LEFT (ic)), GPTRSIZE - 1),
+ GPTRSIZE - 1);
+ }
+
+ if (opIsGptr (IC_RESULT (ic)) &&
+ opIsGptr (IC_RIGHT (ic)) &&
+ !sameRegs (AOP (IC_RESULT (ic)), AOP (IC_RIGHT (ic)))) {
+ aopPut (AOP (IC_RESULT (ic)),
+ aopGet (AOP (IC_RIGHT (ic)), GPTRSIZE - 1),
+ GPTRSIZE - 1);
+ }
+
+ if (opIsGptr (IC_RESULT (ic)) &&
+ AOP_SIZE (IC_LEFT (ic)) < GPTRSIZE &&
+ AOP_SIZE (IC_RIGHT (ic)) < GPTRSIZE &&
+ !sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic))) &&
+ !sameRegs (AOP (IC_RESULT (ic)), AOP (IC_RIGHT (ic)))) {
+ char buffer[5];
+ sprintf (buffer, "%d",
+ pointerCode (getSpec (operandType (IC_LEFT (ic)))));
+ aopPut (AOP (IC_RESULT (ic)), buffer, GPTRSIZE - 1);
+ }
}
/*-----------------------------------------------------------------*/
static void
genPlus (iCode * ic)
{
- int size, offset = 0;
- int samer;
- char *l;
-
- /* special cases :- */
+ int size, offset = 0;
+ int samer;
+ char *l;
- aopOp (IC_LEFT (ic), ic, FALSE);
- aopOp (IC_RIGHT (ic), ic, FALSE);
- aopOp (IC_RESULT (ic), ic, TRUE);
+ /* special cases :- */
- /* if I can do an increment instead
- of add then GOOD for ME */
- if (genPlusIncr (ic) == TRUE)
- goto release;
+ aopOp (IC_LEFT (ic), ic, FALSE);
+ aopOp (IC_RIGHT (ic), ic, FALSE);
+ aopOp (IC_RESULT (ic), ic, TRUE);
- size = getDataSize (IC_RESULT (ic));
- samer = sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic)));
+ /* if I can do an increment instead
+ of add then GOOD for ME */
+ if (genPlusIncr (ic) == TRUE)
+ goto release;
- while (size--)
- {
- if (!samer)
- aopPut (AOP (IC_RESULT (ic)), aopGet (AOP (IC_LEFT (ic)), offset), offset);
+ size = getDataSize (IC_RESULT (ic));
+ samer = sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic)));
- if (AOP_TYPE (IC_RIGHT (ic)) != AOP_LIT)
- {
+ while (size--) {
+ if (!samer)
+ aopPut (AOP (IC_RESULT (ic)),
+ aopGet (AOP (IC_LEFT (ic)), offset), offset);
- if (offset == 0)
- l = "add";
- else
- l = "adc";
+ if (AOP_TYPE (IC_RIGHT (ic)) != AOP_LIT) {
- emitcode (l, "%s,%s", aopGet (AOP (IC_RESULT (ic)), offset),
- aopGet (AOP (IC_RIGHT (ic)), offset));
- }
- else
- {
- if (offset == 0)
- l = "subi";
- else
- l = "sbci";
+ if (offset == 0)
+ l = "add";
+ else
+ l = "adc";
- emitcode (l, "%s,%s(-%d)", aopGet (AOP (IC_RESULT (ic)), offset),
- larray[offset],
- (int) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit));
+ emitcode (l, "%s,%s",
+ aopGet (AOP (IC_RESULT (ic)), offset),
+ aopGet (AOP (IC_RIGHT (ic)), offset));
+ }
+ else {
+ if (AOP_ISHIGHREG( AOP( IC_RESULT(ic)),offset)) {
+ if (offset == 0)
+ l = "subi";
+ else
+ l = "sbci";
+
+ emitcode (l, "%s,%s(-%d)",
+ aopGet (AOP (IC_RESULT (ic)), offset),
+ larray[offset],
+ (int) floatFromVal (AOP (IC_RIGHT (ic))->
+ aopu.aop_lit));
+ } else {
+ if (offset == 0)
+ l = "add";
+ else
+ l = "adc";
+
+ emitcode (l, "%s,%s",
+ aopGet (AOP (IC_RESULT (ic)), offset),
+ aopGet (AOP (IC_RIGHT (ic)), offset));
+ }
+ }
+ offset++;
}
- offset++;
- }
- adjustArithmeticResult (ic);
+ adjustArithmeticResult (ic);
-release:
- freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (IC_RIGHT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ release:
+ freeAsmop (IC_LEFT (ic), NULL, ic,
+ (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (IC_RIGHT (ic), NULL, ic,
+ (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
static bool
genMinusDec (iCode * ic)
{
- unsigned int icount;
-
- /* will try to generate an increment */
- /* if the right side is not a literal
- we cannot */
- if (AOP_TYPE (IC_RIGHT (ic)) != AOP_LIT)
- return FALSE;
-
- icount = (unsigned int) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit);
-
- /* if the sizes are greater than 2 or they are not the same regs
- then we cannot */
- if (!sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RIGHT (ic))))
- return FALSE;
-
- /* so we know LEFT & RESULT in the same registers and add
- amount <= 63 */
- /* for short & char types */
- if (AOP_SIZE (IC_RESULT (ic)) < 2)
- {
- if (icount == 1)
- {
- emitcode ("dec", "%s", aopGet (AOP (IC_LEFT (ic)), 0));
- return TRUE;
- }
- emitcode ("subi", "%s,lo8(%d)", aopGet (AOP (IC_LEFT (ic)), 0), icount);
- return TRUE;
- }
-
- if (AOP_SIZE (IC_RESULT (ic)) <= 3)
- {
- /* if register pair and starts with 26/30 then adiw */
- if (isRegPair (AOP (IC_RESULT (ic))) && icount > 0 && icount < 64 &&
- (IS_REGIDX (AOP (IC_RESULT (ic)), R26_IDX) ||
- IS_REGIDX (AOP (IC_RESULT (ic)), R30_IDX)))
- {
- emitcode ("sbiw", "%s,%d", aopGet (AOP (IC_RESULT (ic)), 0), icount);
- return TRUE;
- }
-
- /* use subi */
- emitcode ("subi", "%s,lo8(%d)", aopGet (AOP (IC_RESULT (ic)), 0), icount);
- emitcode ("sbci", "%s,hi8(%d)", aopGet (AOP (IC_RESULT (ic)), 1), icount);
- return TRUE;
- }
- /* for 32 bit longs */
- emitcode ("subi", "%s,lo8(%d)", aopGet (AOP (IC_RESULT (ic)), 0), icount);
- emitcode ("sbci", "%s,hi8(%d)", aopGet (AOP (IC_RESULT (ic)), 1), icount);
- emitcode ("sbci", "%s,hlo8(%d)", aopGet (AOP (IC_RESULT (ic)), 2), icount);
- emitcode ("sbci", "%s,hhi8(%d)", aopGet (AOP (IC_RESULT (ic)), 3), icount);
- return TRUE;
+ unsigned int icount;
+ int offset ;
+
+ /* will try to generate an increment */
+ /* if the right side is not a literal
+ we cannot */
+ if (AOP_TYPE (IC_RIGHT (ic)) != AOP_LIT)
+ return FALSE;
+
+ icount =
+ (unsigned int) floatFromVal (AOP (IC_RIGHT (ic))->aopu.
+ aop_lit);
+
+ /* if the sizes are greater than 2 or they are not the same regs
+ then we cannot */
+ if (!sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))))
+ return FALSE;
+
+ /* so we know LEFT & RESULT in the same registers and add
+ amount <= 63 */
+ /* for short & char types */
+ if (AOP_SIZE (IC_RESULT (ic)) < 2) {
+ if (icount == 1) {
+ emitcode ("dec", "%s",
+ aopGet (AOP (IC_LEFT (ic)), 0));
+ return TRUE;
+ }
+ if (AOP_ISHIGHREG( AOP ( IC_LEFT(ic)),0)) {
+ emitcode ("subi", "%s,<(%d)",
+ aopGet (AOP (IC_LEFT (ic)), 0), icount);
+ return TRUE;
+ }
+ }
-}
+ for (offset = 0 ; offset < AOP_SIZE(IC_RESULT(ic)) ; offset++) {
+ if (!(AOP_ISHIGHREG(AOP(IC_RESULT(ic)),offset))) return FALSE;
+ }
+
+ if (AOP_SIZE (IC_RESULT (ic)) <= 3) {
+ /* if register pair and starts with 26/30 then adiw */
+ if (isRegPair (AOP (IC_RESULT (ic))) && icount > 0
+ && icount < 64
+ && (IS_REGIDX (AOP (IC_RESULT (ic)), R26_IDX) ||
+ IS_REGIDX (AOP (IC_RESULT (ic)), R24_IDX) ||
+ IS_REGIDX (AOP (IC_RESULT (ic)), R30_IDX))) {
+ emitcode ("sbiw", "%s,%d",
+ aopGet (AOP (IC_RESULT (ic)), 0), icount);
+ return TRUE;
+ }
+
+ /* use subi */
+ emitcode ("subi", "%s,<(%d)",
+ aopGet (AOP (IC_RESULT (ic)), 0), icount);
+ emitcode ("sbci", "%s,>(%d)",
+ aopGet (AOP (IC_RESULT (ic)), 1), icount);
+ return TRUE;
+ }
+ /* for 32 bit longs */
+ emitcode ("subi", "%s,<(%d)", aopGet (AOP (IC_RESULT (ic)), 0),
+ icount);
+ emitcode ("sbci", "%s,>(%d)", aopGet (AOP (IC_RESULT (ic)), 1),
+ icount);
+ emitcode ("sbci", "%s,hlo8(%d)", aopGet (AOP (IC_RESULT (ic)), 2),
+ icount);
+ emitcode ("sbci", "%s,hhi8(%d)", aopGet (AOP (IC_RESULT (ic)), 3),
+ icount);
+ return TRUE;
-/*-----------------------------------------------------------------*/
-/* addSign - complete with sign */
-/*-----------------------------------------------------------------*/
-static void
-addSign (operand * result, int offset, int sign)
-{
- int size = (getDataSize (result) - offset);
- if (size > 0)
- {
- if (sign)
- {
- emitcode ("rlc", "a");
- emitcode ("subb", "a,acc");
- while (size--)
- aopPut (AOP (result), "a", offset++);
- }
- else
- while (size--)
- aopPut (AOP (result), zero, offset++);
- }
}
/*-----------------------------------------------------------------*/
static void
genMinus (iCode * ic)
{
- int size, offset = 0, samer;
- char *l;
-
- aopOp (IC_LEFT (ic), ic, FALSE);
- aopOp (IC_RIGHT (ic), ic, FALSE);
- aopOp (IC_RESULT (ic), ic, TRUE);
-
- /* if I can do an decrement instead
- of subtract then GOOD for ME */
- if (genMinusDec (ic) == TRUE)
- goto release;
-
- size = getDataSize (IC_RESULT (ic));
- samer = sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic)));
- while (size--)
- {
- if (!samer)
- aopPut (AOP (IC_RESULT (ic)), aopGet (AOP (IC_LEFT (ic)), offset), offset);
-
- if (AOP_TYPE (IC_RIGHT (ic)) != AOP_LIT)
- {
-
- if (offset == 0)
- l = "sub";
- else
- l = "sbc";
-
- emitcode (l, "%s,%s", aopGet (AOP (IC_RESULT (ic)), offset),
- aopGet (AOP (IC_RIGHT (ic)), offset));
- }
- else
- {
- if (offset == 0)
- l = "subi";
- else
- l = "sbci";
-
- emitcode (l, "%s,%s(%d)", aopGet (AOP (IC_RESULT (ic)), offset),
- larray[offset],
- (int) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit));
- }
- offset++;
- }
-
- adjustArithmeticResult (ic);
-
-release:
- freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (IC_RIGHT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ int size, offset = 0, samer;
+ char *l;
+
+ aopOp (IC_LEFT (ic), ic, FALSE);
+ aopOp (IC_RIGHT (ic), ic, FALSE);
+ aopOp (IC_RESULT (ic), ic, TRUE);
+
+ /* if I can do an decrement instead
+ of subtract then GOOD for ME */
+ if (genMinusDec (ic) == TRUE)
+ goto release;
+
+ size = getDataSize (IC_RESULT (ic));
+ samer = sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic)));
+ while (size--) {
+ if (!samer)
+ aopPut (AOP (IC_RESULT (ic)),
+ aopGet (AOP (IC_LEFT (ic)), offset), offset);
+
+ if (AOP_TYPE (IC_RIGHT (ic)) != AOP_LIT) {
+
+ if (offset == 0)
+ l = "sub";
+ else
+ l = "sbc";
+
+ emitcode (l, "%s,%s",
+ aopGet (AOP (IC_RESULT (ic)), offset),
+ aopGet (AOP (IC_RIGHT (ic)), offset));
+ }
+ else {
+ if (AOP_ISHIGHREG(AOP (IC_RESULT (ic)),offset)) {
+ if (offset == 0)
+ l = "subi";
+ else
+ l = "sbci";
+
+ emitcode (l, "%s,%s(%d)",
+ aopGet (AOP (IC_RESULT (ic)), offset),
+ larray[offset],
+ (int) floatFromVal (AOP (IC_RIGHT (ic))->
+ aopu.aop_lit));
+ } else {
+ if (offset == 0)
+ l = "sub";
+ else
+ l = "sbc";
+
+ emitcode (l, "%s,%s",
+ aopGet (AOP (IC_RESULT (ic)), offset),
+ aopGet (AOP (IC_RIGHT (ic)), offset));
+ }
+ }
+ offset++;
+ }
+
+ adjustArithmeticResult (ic);
+
+ release:
+ freeAsmop (IC_LEFT (ic), NULL, ic,
+ (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (IC_RIGHT (ic), NULL, ic,
+ (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
/* genMultOneByte : 8 bit multiplication & division */
/*-----------------------------------------------------------------*/
static void
-genMultOneByte (operand * left,
- operand * right,
- operand * result)
+genMultOneByte (operand * left, operand * right, operand * result)
{
- sym_link *opetype = operandType (result);
- symbol *lbl;
- int size, offset;
-
- /* (if two literals, the value is computed before) */
- /* if one literal, literal on the right */
- if (AOP_TYPE (left) == AOP_LIT)
- {
- operand *t = right;
- right = left;
- left = t;
- }
-
- size = AOP_SIZE (result);
-
- if (SPEC_USIGN (opetype))
- {
- emitcode ("mul", "%s,%s", aopGet (AOP (left), 0), aopGet (AOP (right), 0));
- }
- else
- {
- emitcode ("muls", "%s,%s", aopGet (AOP (left), 0),
- aopGet (AOP (right), 0));
- }
- aopPut (AOP (result), "r0", 0);
- if (size > 1)
- {
- aopPut (AOP (result), "r1", 1);
- offset = 2;
- size -= 2;
- if (SPEC_USIGN (opetype))
- {
- while (size--)
- {
- aopPut (AOP (result), zero, offset++);
- }
- }
- else
- {
- if (size)
- {
- lbl = newiTempLabel (NULL);
- emitcode ("ldi", "r24,0");
- emitcode ("brcc", "L%05d", lbl->key);
- emitcode ("ldi", "r24,lo8(-1)");
- emitcode ("", "L%05d:", lbl->key);
- while (size--)
- aopPut (AOP (result), "r24", offset++);
- }
+ sym_link *opetype = operandType (result);
+ symbol *lbl;
+ int size, offset;
+
+ /* (if two literals, the value is computed before) */
+ /* if one literal, literal on the right */
+ if (AOP_TYPE (left) == AOP_LIT) {
+ operand *t = right;
+ right = left;
+ left = t;
+ }
+
+ size = AOP_SIZE (result);
+
+ if (SPEC_USIGN (opetype)) {
+ emitcode ("mul", "%s,%s", aopGet (AOP (left), 0),
+ aopGet (AOP (right), 0));
+ }
+ else {
+ emitcode ("muls", "%s,%s", aopGet (AOP (left), 0),
+ aopGet (AOP (right), 0));
+ }
+ aopPut (AOP (result), "r0", 0);
+ if (size > 1) {
+ aopPut (AOP (result), "r1", 1);
+ offset = 2;
+ size -= 2;
+ if (SPEC_USIGN (opetype)) {
+ while (size--) {
+ aopPut (AOP (result), zero, offset++);
+ }
+ }
+ else {
+ if (size) {
+ lbl = newiTempLabel (NULL);
+ emitcode ("ldi", "r24,0");
+ emitcode ("brcc", "L%05d", lbl->key);
+ emitcode ("ldi", "r24,0xff)");
+ emitcode ("", "L%05d:", lbl->key);
+ while (size--)
+ aopPut (AOP (result), "r24",
+ offset++);
+ }
+ }
}
- }
- return;
+ return;
}
/*-----------------------------------------------------------------*/
static void
genMult (iCode * ic)
{
- operand *left = IC_LEFT (ic);
- operand *right = IC_RIGHT (ic);
- operand *result = IC_RESULT (ic);
-
- /* assign the amsops */
- aopOp (left, ic, FALSE);
- aopOp (right, ic, FALSE);
- aopOp (result, ic, TRUE);
-
- /* if both are of size == 1 */
- if (AOP_SIZE (left) == 1 &&
- AOP_SIZE (right) == 1)
- {
- genMultOneByte (left, right, result);
- goto release;
- }
-
- /* should have been converted to function call */
- assert (1);
-
-release:
- freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (result, NULL, ic, TRUE);
+ operand *left = IC_LEFT (ic);
+ operand *right = IC_RIGHT (ic);
+ operand *result = IC_RESULT (ic);
+
+ /* assign the amsops */
+ aopOp (left, ic, FALSE);
+ aopOp (right, ic, FALSE);
+ aopOp (result, ic, TRUE);
+
+ /* if both are of size == 1 */
+ if (AOP_SIZE (left) == 1 && AOP_SIZE (right) == 1) {
+ genMultOneByte (left, right, result);
+ goto release;
+ }
+
+ /* should have been converted to function call */
+ assert (0);
+
+ release:
+ freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
static void
genDiv (iCode * ic)
{
- /* should have been converted to function call */
- assert (1);
+ /* should have been converted to function call */
+ assert (0);
}
/*-----------------------------------------------------------------*/
static void
genMod (iCode * ic)
{
- /* should have been converted to function call */
- assert (1);
+ /* should have been converted to function call */
+ assert (0);
}
-enum
-{
- AVR_EQ = 0,
- AVR_NE,
- AVR_LT,
- AVR_GE
+enum {
+ AVR_EQ = 0,
+ AVR_NE,
+ AVR_LT,
+ AVR_GE
};
/*-----------------------------------------------------------------*/
static int
revavrcnd (int type)
{
- static struct
- {
- int type, rtype;
- }
- rar[] =
- {
- {
- AVR_EQ, AVR_NE
- }
- ,
- {
- AVR_LT, AVR_GE
- }
- };
- int i;
-
- for (i = 0; i < (sizeof (rar) / sizeof (rar[0])); i++)
- {
- if (rar[i].type == type)
- return rar[i].rtype;
- if (rar[i].rtype == type)
- return rar[i].type;
- }
- assert (1); /* cannot happen */
- return 0; /* makes the compiler happy */
+ static struct {
+ int type, rtype;
+ } rar[] = {
+ {
+ AVR_EQ, AVR_NE}
+ , {
+ AVR_LT, AVR_GE}
+ };
+ int i;
+
+ for (i = 0; i < (sizeof (rar) / sizeof (rar[0])); i++) {
+ if (rar[i].type == type)
+ return rar[i].rtype;
+ if (rar[i].rtype == type)
+ return rar[i].type;
+ }
+ assert (0); /* cannot happen */
+ return 0; /* makes the compiler happy */
}
-static char *br_name[4] =
-{"breq", "brne", "brlt", "brge"};
-static char *br_uname[4] =
-{"breq", "brne", "brlo", "brcc"};
+static char *br_name[4] = { "breq", "brne", "brlt", "brge" };
+static char *br_uname[4] = { "breq", "brne", "brlo", "brcc" };
/*-----------------------------------------------------------------*/
/* genBranch - generate the branch instruction */
static void
genBranch (iCode * ifx, int br_type, int sign)
{
- int tj = (IC_TRUE (ifx) ? 1 : 0);
-
- if (tj)
- { /* if true jump */
- char *nm = (sign ? br_name[br_type] : br_uname[br_type]);
- emitcode (nm, "L%05d", IC_TRUE (ifx)->key);
- }
- else
- { /* if false jump */
- int rtype = revavrcnd (br_type);
- char *nm = (sign ? br_name[rtype] : br_uname[rtype]);
- emitcode (nm, "L%05d", IC_FALSE (ifx)->key);
- }
- ifx->generated = 1;
+ int tj = (IC_TRUE (ifx) ? 1 : 0);
+
+ if (tj) { /* if true jump */
+ char *nm = (sign ? br_name[br_type] : br_uname[br_type]);
+ emitcode (nm, "L%05d", IC_TRUE (ifx)->key);
+ }
+ else { /* if false jump */
+ int rtype = revavrcnd (br_type);
+ char *nm = (sign ? br_name[rtype] : br_uname[rtype]);
+ emitcode (nm, "L%05d", IC_FALSE (ifx)->key);
+ }
+ ifx->generated = 1;
}
/*-----------------------------------------------------------------*/
static void
genCmp (iCode * ic, iCode * ifx, int br_type)
{
- operand *left, *right, *result;
- sym_link *letype, *retype;
- symbol *lbl;
- int sign, size, offset = 0;
-
- left = IC_LEFT (ic);
- right = IC_RIGHT (ic);
- result = IC_RESULT (ic);
-
- letype = getSpec (operandType (left));
- retype = getSpec (operandType (right));
- sign = !(SPEC_USIGN (letype) | SPEC_USIGN (retype));
-
- /* assign the amsops */
- aopOp (left, ic, FALSE);
- aopOp (right, ic, FALSE);
- aopOp (result, ic, TRUE);
- size = AOP_SIZE (left);
-
- if (ifx)
- {
- if (size == 1)
- {
- if (AOP_TYPE (right) == AOP_LIT)
- {
- emitcode ("cpi", "%s,lo8(%d)", aopGet (AOP (left), 0),
- (int) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit));
- genBranch (ifx, br_type, sign);
- }
- else
- { /* right != literal */
- emitcode ("cp", "%s,%s", aopGet (AOP (left), 0), aopGet (AOP (right), 0));
- genBranch (ifx, br_type, sign);
- }
- }
- else
- { /* size != 1 */
- while (size--)
- {
- if (offset == 0)
- emitcode ("cp", "%s,%s", aopGet (AOP (left), 0), aopGet (AOP (right), 0));
- else
- emitcode ("cpc", "%s,%s", aopGet (AOP (left), offset), aopGet (AOP (right), offset));
- offset++;
- }
- genBranch (ifx, br_type, sign);
- }
- }
- else
- { /* no ifx */
- emitcode ("clr", "r0");
- while (size--)
- {
- if (offset == 0)
- emitcode ("cp", "%s,%s", aopGet (AOP (left), 0), aopGet (AOP (right), 0));
- else
- emitcode ("cpc", "%s,%s", aopGet (AOP (left), offset), aopGet (AOP (right), offset));
- offset++;
- }
- lbl = newiTempLabel (NULL);
- br_type = revavrcnd (br_type);
- if (sign)
- emitcode (br_uname[br_type], "L%05d", lbl->key);
- else
- emitcode (br_name[br_type], "L%05d", lbl->key);
- emitcode ("inc", "r0");
- emitcode ("", "L%05d:", lbl->key);
- aopPut (AOP (result), "r0", 0);
- size = AOP_SIZE (result) - 1;
- offset = 1;
- while (size--)
- aopPut (AOP (result), zero, offset++);
- }
-
- freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (result, NULL, ic, TRUE);
+ operand *left, *right, *result;
+ sym_link *letype, *retype;
+ symbol *lbl;
+ int sign, size, offset = 0;
+
+ left = IC_LEFT (ic);
+ right = IC_RIGHT (ic);
+ result = IC_RESULT (ic);
+
+ letype = getSpec (operandType (left));
+ retype = getSpec (operandType (right));
+ sign = !(SPEC_USIGN (letype) | SPEC_USIGN (retype));
+
+ /* assign the amsops */
+ aopOp (left, ic, FALSE);
+ aopOp (right, ic, FALSE);
+ aopOp (result, ic, TRUE);
+ size = AOP_SIZE (left);
+
+ if (ifx) {
+ if (size == 1) {
+ if (AOP_TYPE (right) == AOP_LIT) {
+ emitcode ("cpi", "%s,<(%d)",
+ aopGet (AOP (left), 0),
+ (int)
+ floatFromVal (AOP (IC_RIGHT (ic))->
+ aopu.aop_lit));
+ genBranch (ifx, br_type, sign);
+ }
+ else { /* right != literal */
+ emitcode ("cp", "%s,%s",
+ aopGet (AOP (left), 0),
+ aopGet (AOP (right), 0));
+ genBranch (ifx, br_type, sign);
+ }
+ }
+ else { /* size != 1 */
+ while (size--) {
+ if (offset == 0)
+ emitcode ("cp", "%s,%s",
+ aopGet (AOP (left), 0),
+ aopGet (AOP (right), 0));
+ else
+ emitcode ("cpc", "%s,%s",
+ aopGet (AOP (left), offset),
+ aopGet (AOP (right),
+ offset));
+ offset++;
+ }
+ genBranch (ifx, br_type, sign);
+ }
+ }
+ else { /* no ifx */
+ emitcode ("clr", "r0");
+ while (size--) {
+ if (offset == 0)
+ emitcode ("cp", "%s,%s",
+ aopGet (AOP (left), 0),
+ aopGet (AOP (right), 0));
+ else
+ emitcode ("cpc", "%s,%s",
+ aopGet (AOP (left), offset),
+ aopGet (AOP (right), offset));
+ offset++;
+ }
+ lbl = newiTempLabel (NULL);
+ br_type = revavrcnd (br_type);
+ if (sign)
+ emitcode (br_uname[br_type], "L%05d", lbl->key);
+ else
+ emitcode (br_name[br_type], "L%05d", lbl->key);
+ emitcode ("inc", "r0");
+ emitcode ("", "L%05d:", lbl->key);
+ aopPut (AOP (result), "r0", 0);
+ size = AOP_SIZE (result) - 1;
+ offset = 1;
+ while (size--)
+ aopPut (AOP (result), zero, offset++);
+ }
+
+ freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
static void
genCmpGt (iCode * ic, iCode * ifx)
{
- /* should have transformed by the parser */
- assert (1);
+ /* should have transformed by the parser */
+ assert (0);
}
/*-----------------------------------------------------------------*/
static void
genCmpLt (iCode * ic, iCode * ifx)
{
- genCmp (ic, ifx, AVR_LT);
+ genCmp (ic, ifx, AVR_LT);
}
/*-----------------------------------------------------------------*/
static void
genCmpEq (iCode * ic, iCode * ifx)
{
- genCmp (ic, ifx, AVR_EQ);
+ genCmp (ic, ifx, AVR_EQ);
}
/*-----------------------------------------------------------------*/
static void
genCmpNe (iCode * ic, iCode * ifx)
{
- genCmp (ic, ifx, AVR_NE);
+ genCmp (ic, ifx, AVR_NE);
}
/*-----------------------------------------------------------------*/
static void
genCmpGe (iCode * ic, iCode * ifx)
{
- genCmp (ic, ifx, AVR_GE);
+ genCmp (ic, ifx, AVR_GE);
}
/*-----------------------------------------------------------------*/
static void
genCmpLe (iCode * ic, iCode * ifx)
{
- operand *left = IC_LEFT (ic);
- operand *right = IC_RIGHT (ic);
+ operand *left = IC_LEFT (ic);
+ operand *right = IC_RIGHT (ic);
- IC_RIGHT (ic) = left;
- IC_LEFT (ic) = right;
- genCmp (ic, ifx, AVR_GE);
+ IC_RIGHT (ic) = left;
+ IC_LEFT (ic) = right;
+ genCmp (ic, ifx, AVR_GE);
}
/*-----------------------------------------------------------------*/
static iCode *
ifxForOp (operand * op, iCode * ic)
{
- /* if true symbol then needs to be assigned */
- if (IS_TRUE_SYMOP (op))
- return NULL;
-
- /* if this has register type condition and
- the next instruction is ifx with the same operand
- and live to of the operand is upto the ifx only then */
- if (ic->next &&
- ic->next->op == IFX &&
- IC_COND (ic->next)->key == op->key &&
- OP_SYMBOL (op)->liveTo <= ic->next->seq)
- return ic->next;
-
- return NULL;
+ /* if true symbol then needs to be assigned */
+ if (IS_TRUE_SYMOP (op))
+ return NULL;
+
+ /* if this has register type condition and
+ the next instruction is ifx with the same operand
+ and live to of the operand is upto the ifx only then */
+ if (ic->next &&
+ ic->next->op == IFX &&
+ IC_COND (ic->next)->key == op->key &&
+ OP_SYMBOL (op)->liveTo <= ic->next->seq) return ic->next;
+
+ return NULL;
}
+
/*-----------------------------------------------------------------*/
/* genAndOp - for && operation */
/*-----------------------------------------------------------------*/
static void
genAndOp (iCode * ic)
{
- operand *left, *right, *result;
- symbol *tlbl;
- int size, offset;
-
- /* note here that && operations that are in an
- if statement are taken away by backPatchLabels
- only those used in arthmetic operations remain */
- aopOp ((left = IC_LEFT (ic)), ic, FALSE);
- aopOp ((right = IC_RIGHT (ic)), ic, FALSE);
- aopOp ((result = IC_RESULT (ic)), ic, FALSE);
-
- tlbl = newiTempLabel (NULL);
- toBoolean (left, "r0", TRUE);
- toBoolean (right, "r1", TRUE);
- emitcode ("and", "r0,r1");
- emitcode ("ldi", "r24,1");
- emitcode ("breq", "L%05d", tlbl->key);
- emitcode ("dec", "r24");
- emitcode ("", "L%05d:", tlbl->key);
- aopPut (AOP (result), "r24", 0);
- size = AOP_SIZE (result) - 1;
- offset = 1;
- while (size--)
- aopPut (AOP (result), zero, offset++);
-
- freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (result, NULL, ic, TRUE);
+ operand *left, *right, *result;
+ symbol *tlbl;
+ int size, offset;
+
+ /* note here that && operations that are in an
+ if statement are taken away by backPatchLabels
+ only those used in arthmetic operations remain */
+ aopOp ((left = IC_LEFT (ic)), ic, FALSE);
+ aopOp ((right = IC_RIGHT (ic)), ic, FALSE);
+ aopOp ((result = IC_RESULT (ic)), ic, FALSE);
+
+ tlbl = newiTempLabel (NULL);
+ toBoolean (left, "r0", TRUE);
+ toBoolean (right, "r1", TRUE);
+ emitcode ("and", "r0,r1");
+ emitcode ("ldi", "r24,1");
+ emitcode ("breq", "L%05d", tlbl->key);
+ emitcode ("dec", "r24");
+ emitcode ("", "L%05d:", tlbl->key);
+ aopPut (AOP (result), "r24", 0);
+ size = AOP_SIZE (result) - 1;
+ offset = 1;
+ while (size--)
+ aopPut (AOP (result), zero, offset++);
+
+ freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (result, NULL, ic, TRUE);
}
static void
genOrOp (iCode * ic)
{
- operand *left, *right, *result;
- symbol *tlbl;
- int size, offset;
-
- /* note here that || operations that are in an
- if statement are taken away by backPatchLabels
- only those used in arthmetic operations remain */
- aopOp ((left = IC_LEFT (ic)), ic, FALSE);
- aopOp ((right = IC_RIGHT (ic)), ic, FALSE);
- aopOp ((result = IC_RESULT (ic)), ic, FALSE);
-
- tlbl = newiTempLabel (NULL);
- toBoolean (left, "r0", TRUE);
- toBoolean (right, "r0", FALSE);
- emitcode ("ldi", "r24,1");
- emitcode ("breq", "L%05d", tlbl->key);
- emitcode ("dec", "r24");
- emitcode ("", "L%05d:", tlbl->key);
- aopPut (AOP (result), "r24", 0);
- size = AOP_SIZE (result) - 1;
- offset = 1;
- while (size--)
- aopPut (AOP (result), zero, offset++);
-
- freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (result, NULL, ic, TRUE);
-}
+ operand *left, *right, *result;
+ symbol *tlbl;
+ int size, offset;
+
+ /* note here that || operations that are in an
+ if statement are taken away by backPatchLabels
+ only those used in arthmetic operations remain */
+ aopOp ((left = IC_LEFT (ic)), ic, FALSE);
+ aopOp ((right = IC_RIGHT (ic)), ic, FALSE);
+ aopOp ((result = IC_RESULT (ic)), ic, FALSE);
+
+ tlbl = newiTempLabel (NULL);
+ toBoolean (left, "r0", TRUE);
+ toBoolean (right, "r0", FALSE);
+ emitcode ("ldi", "r24,1");
+ emitcode ("breq", "L%05d", tlbl->key);
+ emitcode ("dec", "r24");
+ emitcode ("", "L%05d:", tlbl->key);
+ aopPut (AOP (result), "r24", 0);
+ size = AOP_SIZE (result) - 1;
+ offset = 1;
+ while (size--)
+ aopPut (AOP (result), zero, offset++);
-/*-----------------------------------------------------------------*/
-/* isLiteralBit - test if lit == 2^n */
-/*-----------------------------------------------------------------*/
-static int
-isLiteralBit (unsigned long lit)
-{
- unsigned long pw[32] =
- {1L, 2L, 4L, 8L, 16L, 32L, 64L, 128L,
- 0x100L, 0x200L, 0x400L, 0x800L,
- 0x1000L, 0x2000L, 0x4000L, 0x8000L,
- 0x10000L, 0x20000L, 0x40000L, 0x80000L,
- 0x100000L, 0x200000L, 0x400000L, 0x800000L,
- 0x1000000L, 0x2000000L, 0x4000000L, 0x8000000L,
- 0x10000000L, 0x20000000L, 0x40000000L, 0x80000000L};
- int idx;
-
- for (idx = 0; idx < 32; idx++)
- if (lit == pw[idx])
- return idx + 1;
- return 0;
+ freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (result, NULL, ic, TRUE);
}
-enum
-{
- AVR_AND = 0, AVR_OR, AVR_XOR
+enum {
+ AVR_AND = 0, AVR_OR, AVR_XOR
};
-static char *bopnames_lit[] =
-{"andi", "ori"};
-static char *bopnames[] =
-{"and", "or", "eor"};
+static char *bopnames_lit[] = { "andi", "ori" };
+static char *bopnames[] = { "and", "or", "eor" };
/*-----------------------------------------------------------------*/
/* genBitWise - generate bitwise operations */
/*-----------------------------------------------------------------*/
static void
genBitWise (iCode * ic, iCode * ifx, int bitop)
{
- operand *left, *right, *result;
- int size, offset = 0;
- char *l;
- symbol *lbl, *lbl1;
- int samerl, samerr;
-
- aopOp ((left = IC_LEFT (ic)), ic, FALSE);
- aopOp ((right = IC_RIGHT (ic)), ic, FALSE);
- aopOp ((result = IC_RESULT (ic)), ic, TRUE);
-
- size = AOP_SIZE (left);
- offset = 0;
- if (ifx)
- { /* used only for jumps */
- if (AOP_TYPE (right) == AOP_LIT &&
- (bitop == AVR_AND || bitop == AVR_OR))
- {
- int lit = (int) floatFromVal (AOP (right)->aopu.aop_lit);
- int p2 = powof2 (lit);
- if (bitop == AVR_AND && p2)
- { /* right side is a power of 2 */
- l = aopGet (AOP (left), p2 / 8);
- if (IC_TRUE (ifx))
- {
- emitcode ("sbrc", "%s,%d", l, (p2 % 8));
- emitcode ("rjmp", "L%05d", IC_TRUE (ifx)->key);
- }
- else
- {
- emitcode ("sbrs", "%s,%d", l, (p2 % 8));
- emitcode ("rjmp", "L%05d", IC_FALSE (ifx)->key);
- }
- }
- else
- { /* right not power of two */
- int eh = OP_SYMBOL (left)->liveTo <= ic->seq;
- if (size == 1)
- {
- if (eh)
- {
- emitcode (bopnames_lit[bitop], "%s,lo8(%d)",
- aopGet (AOP (IC_LEFT (ic)), 0), lit);
- }
- else
- {
- MOVR0 (aopGet (AOP (IC_LEFT (ic)), 0));
- emitcode (bopnames_lit[bitop], "r0,lo8(%d)", lit);
- }
- lbl = newiTempLabel (NULL);
- if (IC_TRUE (ifx))
- {
- emitcode ("breq", "L%05d", lbl->key);
- emitcode ("rjmp", "L%05d", IC_TRUE (ifx)->key);
- }
- else
- {
- emitcode ("brne", "L%05d", lbl->key);
- emitcode ("rjmp", "L%05d", IC_FALSE (ifx)->key);
- }
- emitcode ("", "L%05d:", lbl->key);
- }
- else if (size == 2)
- {
- emitcode ("mov", "r24,%s", aopGet (AOP (IC_LEFT (ic)), 0));
- emitcode ("mov", "r25,%s", aopGet (AOP (IC_LEFT (ic)), 1));
- emitcode (bopnames_lit[bitop], "r24,lo8(%d)", lit);
- emitcode (bopnames_lit[bitop], "r25,hi8(%d)", lit);
- emitcode ("sbiw", "r24,0");
- lbl = newiTempLabel (NULL);
- if (IC_TRUE (ifx))
- {
- emitcode ("breq", "L%05d", lbl->key);
- emitcode ("rjmp", "L%05d", IC_TRUE (ifx)->key);
- }
- else
- {
- emitcode ("brne", "L%05d", lbl->key);
- emitcode ("rjmp", "L%05d", IC_FALSE (ifx)->key);
- }
- emitcode ("", "L%05d:", lbl->key);
- }
- else
- {
- lbl = newiTempLabel (NULL);
- lbl1 = newiTempLabel (NULL);
- while (size--)
- {
- if (eh)
- {
- emitcode (bopnames_lit[bitop], "%s,lo8(%d)",
- aopGet (AOP (IC_LEFT (ic)), offset), lit);
+ operand *left, *right, *result;
+ int size, offset = 0;
+ char *l;
+ symbol *lbl, *lbl1;
+ int samerl, samerr;
+
+ aopOp ((left = IC_LEFT (ic)), ic, FALSE);
+ aopOp ((right = IC_RIGHT (ic)), ic, FALSE);
+ aopOp ((result = IC_RESULT (ic)), ic, TRUE);
+
+ size = AOP_SIZE (left);
+ offset = 0;
+ if (ifx) { /* used only for jumps */
+ if (AOP_TYPE (right) == AOP_LIT &&
+ (bitop == AVR_AND || bitop == AVR_OR)) {
+ int lit =
+ (int) floatFromVal (AOP (right)->aopu.
+ aop_lit);
+ int p2 = powof2 (lit);
+ if (bitop == AVR_AND && p2) { /* right side is a power of 2 */
+ l = aopGet (AOP (left), p2 / 8);
+ if (IC_TRUE (ifx)) {
+ emitcode ("sbrc", "%s,%d", l,
+ (p2 % 8));
+ emitcode ("rjmp", "L%05d",
+ IC_TRUE (ifx)->key);
+ }
+ else {
+ emitcode ("sbrs", "%s,%d", l,
+ (p2 % 8));
+ emitcode ("rjmp", "L%05d",
+ IC_FALSE (ifx)->key);
+ }
}
- else
- {
- MOVR0 (aopGet (AOP (IC_LEFT (ic)), offset));
- emitcode ("andi", "r0,lo8(%d)", lit);
+ else { /* right not power of two */
+ int eh = OP_SYMBOL (left)->liveTo <= ic->seq;
+ if (size == 1) {
+ if (eh && AOP_ISHIGHREG(AOP(IC_LEFT(ic)),0)) {
+ emitcode (bopnames_lit[bitop],
+ "%s,<(%d)",
+ aopGet (AOP (IC_LEFT (ic)), 0), lit);
+ }
+ else {
+ MOVR24 (aopGet (AOP (IC_LEFT (ic)), 0));
+ emitcode (bopnames_lit[bitop], "r24,<(%d)", lit);
+ }
+ lbl = newiTempLabel (NULL);
+ if (IC_TRUE (ifx)) {
+ emitcode ("breq", "L%05d", lbl->key);
+ emitcode ("rjmp", "L%05d", IC_TRUE (ifx)->key);
+ }
+ else {
+ emitcode ("brne", "L%05d", lbl->key);
+ emitcode ("rjmp", "L%05d", IC_FALSE (ifx)-> key);
+ }
+ emitcode ("", "L%05d:", lbl->key);
+ }
+ else if (size == 2) {
+ emitcode ("mov", "r24,%s", aopGet (AOP (IC_LEFT (ic)), 0));
+ emitcode ("mov", "r25,%s", aopGet (AOP (IC_LEFT (ic)), 1));
+ emitcode (bopnames_lit[bitop], "r24,<(%d)", lit);
+ emitcode (bopnames_lit[bitop], "r25,>(%d)", lit);
+ emitcode ("sbiw", "r24,0");
+ lbl = newiTempLabel (NULL);
+ if (IC_TRUE (ifx)) {
+ emitcode ("breq", "L%05d", lbl->key);
+ emitcode ("rjmp", "L%05d", IC_TRUE (ifx)->key);
+ }
+ else {
+ emitcode ("brne", "L%05d", lbl->key);
+ emitcode ("rjmp", "L%05d", IC_FALSE (ifx)->key);
+ }
+ emitcode ("", "L%05d:", lbl->key);
+ }
+ else {
+ lbl = newiTempLabel (NULL);
+ lbl1 = newiTempLabel (NULL);
+ while (size--) {
+ if (eh && AOP_ISHIGHREG(AOP(IC_LEFT(ic)),offset)) {
+ emitcode (bopnames_lit [bitop], "%s,<(%d)",
+ aopGet (AOP (IC_LEFT (ic)), offset),
+ lit);
+ }
+ else {
+ char *l = aopGet (AOP (IC_LEFT (ic)), offset);
+ MOVR24 (l);
+ emitcode ("andi", "r24,<(%d)", lit);
+ }
+ emitcode ("brne", "L%05d", lbl->key);
+ offset++;
+ }
+ /* all are zero */
+ if (IC_FALSE (ifx))
+ emitcode ("rjmp", "L%05d", IC_FALSE (ifx)-> key);
+ else
+ emitcode ("rjmp", "L%05d", lbl1->key);
+ emitcode ("", "L%05d:", lbl->key);
+ /* not zero */
+ if (IC_TRUE (ifx))
+ emitcode ("rjmp", "L%05d", IC_TRUE (ifx)->key);
+ emitcode ("", "L%05d:", lbl1->key);
+
+ }
}
- emitcode ("brne", "L%05d", lbl->key);
- offset++;
- }
- /* all are zero */
- if (IC_FALSE (ifx))
- emitcode ("rjmp", "L%05d", IC_FALSE (ifx)->key);
- else
- emitcode ("rjmp", "L%05d", lbl1->key);
- emitcode ("", "L%05d:", lbl->key);
- /* not zero */
- if (IC_TRUE (ifx))
- emitcode ("rjmp", "L%05d", IC_TRUE (ifx)->key);
- emitcode ("", "L%05d:", lbl1->key);
-
- }
- }
- }
- else
- { /* right is not a literal */
- int eh = OP_SYMBOL (left)->liveTo <= ic->seq;
- int reh = OP_SYMBOL (right)->liveTo <= ic->seq;
- if (size == 1)
- {
- if (eh)
- {
- emitcode (bopnames[bitop], "%s,%s",
- aopGet (AOP (IC_LEFT (ic)), 0),
- aopGet (AOP (IC_RIGHT (ic)), 0));
}
- else if (reh)
- {
- emitcode (bopnames[bitop], "%s,%s",
- aopGet (AOP (IC_RIGHT (ic)), 0),
- aopGet (AOP (IC_LEFT (ic)), 0));
+ else { /* right is not a literal */
+ int eh = OP_SYMBOL (left)->liveTo <= ic->seq;
+ int reh = OP_SYMBOL (right)->liveTo <= ic->seq;
+ if (size == 1) {
+ if (eh) {
+ emitcode (bopnames[bitop], "%s,%s", aopGet (AOP (IC_LEFT (ic)), 0),
+ aopGet (AOP (IC_RIGHT (ic)), 0));
+ }
+ else if (reh) {
+ emitcode (bopnames[bitop], "%s,%s",
+ aopGet (AOP (IC_RIGHT (ic)), 0),
+ aopGet (AOP (IC_LEFT (ic)), 0));
+ }
+ else {
+ MOVR0 (aopGet (AOP (IC_LEFT (ic)), 0));
+ emitcode (bopnames[bitop], "r0,%s",
+ aopGet (AOP (IC_RIGHT (ic)), 0));
+ }
+ lbl = newiTempLabel (NULL);
+ if (IC_TRUE (ifx)) {
+ emitcode ("breq", "L%05d", lbl->key);
+ emitcode ("rjmp", "L%05d",
+ IC_TRUE (ifx)->key);
+ }
+ else {
+ emitcode ("brne", "L%05d", lbl->key);
+ emitcode ("rjmp", "L%05d",
+ IC_FALSE (ifx)->key);
+ }
+ emitcode ("", "L%05d:", lbl->key);
+ }
+ else if (size == 2) {
+ emitcode ("mov", "r24,%s",
+ aopGet (AOP (IC_LEFT (ic)), 0));
+ emitcode ("mov", "r25,%s",
+ aopGet (AOP (IC_LEFT (ic)), 1));
+ emitcode (bopnames[bitop], "r24,%s",
+ aopGet (AOP (IC_RIGHT (ic)), 0));
+ emitcode (bopnames[bitop], "r25,%s",
+ aopGet (AOP (IC_RIGHT (ic)), 1));
+ emitcode ("sbiw", "r24,0");
+ lbl = newiTempLabel (NULL);
+ if (IC_TRUE (ifx)) {
+ emitcode ("breq", "L%05d", lbl->key);
+ emitcode ("rjmp", "L%05d", IC_TRUE (ifx)->key);
+ }
+ else {
+ emitcode ("brne", "L%05d", lbl->key);
+ emitcode ("rjmp", "L%05d", IC_FALSE (ifx)->key);
+ }
+ emitcode ("", "L%05d:", lbl->key);
+ }
+ else {
+ lbl = newiTempLabel (NULL);
+ lbl1 = newiTempLabel (NULL);
+ while (size--) {
+ if (eh) {
+ emitcode (bopnames[bitop], "%s,%s",
+ aopGet (AOP (IC_LEFT (ic)), offset),
+ aopGet (AOP (IC_RIGHT (ic)), offset));
+ }
+ else if (reh) {
+ emitcode (bopnames[bitop], "%s,%s",
+ aopGet (AOP (IC_RIGHT (ic)), offset),
+ aopGet (AOP (IC_LEFT (ic)), offset));
+ }
+ else {
+ MOVR0 (aopGet (AOP (IC_LEFT (ic)), offset));
+ emitcode (bopnames[bitop], "r0,%s",
+ aopGet (AOP (IC_RIGHT (ic)), offset));
+ }
+ emitcode ("brne", "L%05d", lbl->key);
+ offset++;
+ }
+ /* all are zero */
+ if (IC_FALSE (ifx))
+ emitcode ("rjmp", "L%05d", IC_FALSE (ifx)->key);
+ else
+ emitcode ("rjmp", "L%05d", lbl1->key);
+ emitcode ("", "L%05d:", lbl->key);
+ /* not zero */
+ if (IC_TRUE (ifx))
+ emitcode ("rjmp", "L%05d", IC_TRUE (ifx)->key);
+ emitcode ("", "L%05d:", lbl1->key);
+
+ }
}
- else
- {
- MOVR0 (aopGet (AOP (IC_LEFT (ic)), 0));
- emitcode (bopnames[bitop], "r0,%s", aopGet (AOP (IC_RIGHT (ic)), 0));
+ goto release;
+ }
+
+ /* result needs to go a register */
+ samerl = sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic)));
+ samerr = sameRegs (AOP (IC_RESULT (ic)), AOP (IC_RIGHT (ic)));
+ while (size--) {
+ if (AOP_TYPE (right) == AOP_LIT) {
+ unsigned int lit =
+ (int) floatFromVal (AOP (right)->aopu.
+ aop_lit);
+ if (((lit >> (8 * offset)) & 0xff) == 0) {
+ if (bitop == AVR_AND) {
+ aopPut (AOP (result), zero, offset++);
+ continue;
+ }
+ else if (bitop == AVR_OR) {
+ if (!samerl)
+ aopPut (AOP (result),
+ aopGet (AOP (left),
+ offset),
+ offset);
+ offset++;
+ continue;
+ }
+ }
}
- lbl = newiTempLabel (NULL);
- if (IC_TRUE (ifx))
- {
- emitcode ("breq", "L%05d", lbl->key);
- emitcode ("rjmp", "L%05d", IC_TRUE (ifx)->key);
+ if (samerl) {
+ if (AOP_TYPE (IC_RIGHT (ic)) == AOP_LIT &&
+ AOP_ISHIGHREG(AOP(IC_LEFT(ic)),offset) &&
+ (bitop == AVR_AND || bitop == AVR_OR)) {
+ emitcode (bopnames_lit[bitop], "%s,%s(%d)",
+ aopGet (AOP (IC_LEFT (ic)), offset),
+ larray[offset],
+ (int) floatFromVal (AOP (right)-> aopu.aop_lit));
+ }
+ else {
+ emitcode (bopnames[bitop], "%s,%s",
+ aopGet (AOP (IC_LEFT (ic)), offset),
+ aopGet (AOP (IC_RIGHT (ic)), offset));
+ }
}
- else
- {
- emitcode ("brne", "L%05d", lbl->key);
- emitcode ("rjmp", "L%05d", IC_FALSE (ifx)->key);
- }
- emitcode ("", "L%05d:", lbl->key);
- }
- else if (size == 2)
- {
- emitcode ("mov", "r24,%s", aopGet (AOP (IC_LEFT (ic)), 0));
- emitcode ("mov", "r25,%s", aopGet (AOP (IC_LEFT (ic)), 1));
- emitcode (bopnames[bitop], "r24,%s", aopGet (AOP (IC_RIGHT (ic)), 0));
- emitcode (bopnames[bitop], "r25,%s", aopGet (AOP (IC_RIGHT (ic)), 1));
- emitcode ("sbiw", "r24,0");
- lbl = newiTempLabel (NULL);
- if (IC_TRUE (ifx))
- {
- emitcode ("breq", "L%05d", lbl->key);
- emitcode ("rjmp", "L%05d", IC_TRUE (ifx)->key);
+ else if (samerr) {
+ emitcode (bopnames[bitop], "%s,%s",
+ aopGet (AOP (IC_RIGHT (ic)), offset),
+ aopGet (AOP (IC_LEFT (ic)), offset));
}
- else
- {
- emitcode ("brne", "L%05d", lbl->key);
- emitcode ("rjmp", "L%05d", IC_FALSE (ifx)->key);
- }
- emitcode ("", "L%05d:", lbl->key);
- }
- else
- {
- lbl = newiTempLabel (NULL);
- lbl1 = newiTempLabel (NULL);
- while (size--)
- {
- if (eh)
- {
- emitcode (bopnames[bitop], "%s,%s",
- aopGet (AOP (IC_LEFT (ic)), offset),
- aopGet (AOP (IC_RIGHT (ic)), offset));
- }
- else if (reh)
- {
- emitcode (bopnames[bitop], "%s,%s",
- aopGet (AOP (IC_RIGHT (ic)), offset),
- aopGet (AOP (IC_LEFT (ic)), offset));
- }
- else
- {
- MOVR0 (aopGet (AOP (IC_LEFT (ic)), offset));
- emitcode (bopnames[bitop], "r0,%s", aopGet (AOP (IC_RIGHT (ic)), offset));
- }
- emitcode ("brne", "L%05d", lbl->key);
- offset++;
- }
- /* all are zero */
- if (IC_FALSE (ifx))
- emitcode ("rjmp", "L%05d", IC_FALSE (ifx)->key);
- else
- emitcode ("rjmp", "L%05d", lbl1->key);
- emitcode ("", "L%05d:", lbl->key);
- /* not zero */
- if (IC_TRUE (ifx))
- emitcode ("rjmp", "L%05d", IC_TRUE (ifx)->key);
- emitcode ("", "L%05d:", lbl1->key);
-
- }
- }
- goto release;
- }
-
- /* result needs to go a register */
- samerl = sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic)));
- samerr = sameRegs (AOP (IC_RESULT (ic)), AOP (IC_RIGHT (ic)));
- while (size--)
- {
- if (AOP_TYPE (right) == AOP_LIT)
- {
- unsigned int lit = (int) floatFromVal (AOP (right)->aopu.aop_lit);
- if (((lit >> (8 * offset)) & 0xff) == 0)
- {
- if (bitop == AVR_AND)
- {
- aopPut (AOP (result), zero, offset++);
- continue;
+ else {
+ aopPut (AOP (IC_RESULT (ic)),
+ aopGet (AOP (IC_LEFT (ic)), offset), offset);
+ emitcode (bopnames[bitop],
+ aopGet (AOP (IC_RESULT (ic)), offset),
+ aopGet (AOP (IC_RIGHT (ic)), offset));
}
- else if (bitop == AVR_OR)
- {
- if (!samerl)
- aopPut (AOP (result), aopGet (AOP (left), offset), offset);
- offset++;
- continue;
- }
- }
- }
- if (samerl)
- {
- if (AOP_TYPE (IC_RIGHT (ic)) == AOP_LIT && (bitop == AVR_AND || bitop == AVR_OR))
- {
- emitcode (bopnames_lit[bitop], "%s,%s(%d)", aopGet (AOP (IC_LEFT (ic)), offset),
- larray[offset], (int) floatFromVal (AOP (right)->aopu.aop_lit));
- }
- else
- {
- emitcode (bopnames[bitop], "%s,%s", aopGet (AOP (IC_LEFT (ic)), offset),
- aopGet (AOP (IC_RIGHT (ic)), offset));
- }
- }
- else if (samerr)
- {
- emitcode (bopnames[bitop], "%s,%s", aopGet (AOP (IC_RIGHT (ic)), offset),
- aopGet (AOP (IC_LEFT (ic)), offset));
- }
- else
- {
- aopPut (AOP (IC_RESULT (ic)), aopGet (AOP (IC_LEFT (ic)), offset), offset);
- emitcode (bopnames[bitop], aopGet (AOP (IC_RESULT (ic)), offset),
- aopGet (AOP (IC_RIGHT (ic)), offset));
- }
- offset++;
- }
-release:
- freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
- freeAsmop (result, NULL, ic, TRUE);
+ offset++;
+ }
+ release:
+ freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
+ freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
static void
genAnd (iCode * ic, iCode * ifx)
{
- genBitWise (ic, ifx, AVR_AND);
+ genBitWise (ic, ifx, AVR_AND);
}
/*-----------------------------------------------------------------*/
static void
genOr (iCode * ic, iCode * ifx)
{
- genBitWise (ic, ifx, AVR_OR);
+ genBitWise (ic, ifx, AVR_OR);
}
/*-----------------------------------------------------------------*/
static void
genXor (iCode * ic, iCode * ifx)
{
- genBitWise (ic, ifx, AVR_XOR);
+ genBitWise (ic, ifx, AVR_XOR);
}
/*-----------------------------------------------------------------*/
static void
genInline (iCode * ic)
{
- char buffer[MAX_INLINEASM];
- char *bp = buffer;
- char *bp1 = buffer;
-
- _G.inLine += (!options.asmpeep);
- strcpy (buffer, IC_INLINE (ic));
-
- /* emit each line as a code */
- while (*bp)
- {
- if (*bp == '\n')
- {
- *bp++ = '\0';
- emitcode (bp1, "");
- bp1 = bp;
- }
- else
- {
- if (*bp == ':')
- {
- bp++;
- *bp = '\0';
- bp++;
- emitcode (bp1, "");
- bp1 = bp;
- }
- else
- bp++;
- }
- }
- if (bp1 != bp)
- emitcode (bp1, "");
- /* emitcode("",buffer); */
- _G.inLine -= (!options.asmpeep);
+ char *buffer, *bp, *bp1;
+
+ _G.inLine += (!options.asmpeep);
+
+ buffer = bp = bp1 = Safe_calloc(1, strlen(IC_INLINE(ic))+1);
+ strcpy (buffer, IC_INLINE (ic));
+
+ /* emit each line as a code */
+ while (*bp) {
+ if (*bp == '\n') {
+ *bp++ = '\0';
+ emitcode (bp1, "");
+ bp1 = bp;
+ }
+ else {
+ if (*bp == ':') {
+ bp++;
+ *bp = '\0';
+ bp++;
+ emitcode (bp1, "");
+ bp1 = bp;
+ }
+ else
+ bp++;
+ }
+ }
+ if (bp1 != bp)
+ emitcode (bp1, "");
+ /* emitcode("",buffer); */
+ _G.inLine -= (!options.asmpeep);
}
/*-----------------------------------------------------------------*/
static void
genRotC (iCode * ic, int lr)
{
- operand *left, *result;
- int size, offset = 0;
-
- /* rotate right with carry */
- left = IC_LEFT (ic);
- result = IC_RESULT (ic);
- aopOp (left, ic, FALSE);
- aopOp (result, ic, FALSE);
-
- /* move it to the result */
- size = AOP_SIZE (result);
- if (!sameRegs (AOP (left), AOP (result)))
- {
- offset = 0;
- while (size--)
- {
- aopPut (AOP (result),
- aopGet (AOP (left), offset),
- offset);
- offset++;
- }
- size = AOP_SIZE (result);
- }
- if (lr)
- offset = size - 1;
- else
- offset = 0;
-
- CLRC;
- emitcode ("sbrc", "%s,%d", aopGet (AOP (result), offset),
- (lr ? 0 : 7));
- emitcode ("sec", "");
-
- while (size--)
- {
- emitcode ((lr ? "ror" : "rol"), "%s", aopGet (AOP (result), offset));
- if (lr)
- offset--;
- else
- offset++;
- }
- freeAsmop (left, NULL, ic, TRUE);
- freeAsmop (result, NULL, ic, TRUE);
+ operand *left, *result;
+ int size, offset = 0;
+
+ /* rotate right with carry */
+ left = IC_LEFT (ic);
+ result = IC_RESULT (ic);
+ aopOp (left, ic, FALSE);
+ aopOp (result, ic, FALSE);
+
+ /* move it to the result */
+ size = AOP_SIZE (result);
+ if (!sameRegs (AOP (left), AOP (result))) {
+ offset = 0;
+ while (size--) {
+ aopPut (AOP (result),
+ aopGet (AOP (left), offset), offset);
+ offset++;
+ }
+ size = AOP_SIZE (result);
+ }
+ if (lr)
+ offset = size - 1;
+ else
+ offset = 0;
+
+ CLRC;
+ emitcode ("sbrc", "%s,%d", aopGet (AOP (result), offset),
+ (lr ? 0 : 7));
+ emitcode ("sec", "");
+
+ while (size--) {
+ emitcode ((lr ? "ror" : "rol"), "%s",
+ aopGet (AOP (result), offset));
+ if (lr)
+ offset--;
+ else
+ offset++;
+ }
+ freeAsmop (left, NULL, ic, TRUE);
+ freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
static void
genRRC (iCode * ic)
{
- genRotC (ic, 1);
+ genRotC (ic, 1);
}
/*-----------------------------------------------------------------*/
static void
genRLC (iCode * ic)
{
- genRotC (ic, 0);
+ genRotC (ic, 0);
}
/*-----------------------------------------------------------------*/
static void
genGetHbit (iCode * ic)
{
- operand *left, *result;
- int size, offset;
-
- left = IC_LEFT (ic);
- result = IC_RESULT (ic);
- aopOp (left, ic, FALSE);
- aopOp (result, ic, FALSE);
-
- size = AOP_SIZE (result);
- if (!sameRegs (AOP (left), AOP (result)))
- {
- emitcode ("clr", "%s", aopGet (AOP (result), size - 1));
- emitcode ("sbrc", "%s,7", aopGet (AOP (left), size - 1));
- emitcode ("subi", "%s,lo8(-1)", aopGet (AOP (result), size - 1));
- }
- else
- {
- emitcode ("clr", "r0");
- emitcode ("sbrc", "%s,7", aopGet (AOP (left), size - 1));
- emitcode ("subi", "r0,lo8(-1)");
- aopPut (AOP (result), "r0", 0);
- }
- offset = 1;
- size--;
- while (size--)
- {
- emitcode ("clr", aopGet (AOP (result), offset++));
- }
- freeAsmop (left, NULL, ic, TRUE);
- freeAsmop (result, NULL, ic, TRUE);
+ operand *left, *result;
+ int size, offset;
+
+ left = IC_LEFT (ic);
+ result = IC_RESULT (ic);
+ aopOp (left, ic, FALSE);
+ aopOp (result, ic, FALSE);
+
+ size = AOP_SIZE (result);
+ if (!sameRegs (AOP (left), AOP (result))) {
+ emitcode ("clr", "%s", aopGet (AOP (result), size - 1));
+ emitcode ("sbrc", "%s,7", aopGet (AOP (left), size - 1));
+ emitcode ("subi", "%s,<(-1)",
+ aopGet (AOP (result), size - 1));
+ }
+ else {
+ emitcode ("clr", "r0");
+ emitcode ("sbrc", "%s,7", aopGet (AOP (left), size - 1));
+ emitcode ("subi", "r0,<(-1)");
+ aopPut (AOP (result), "r0", 0);
+ }
+ offset = 1;
+ size--;
+ while (size--) {
+ emitcode ("clr", aopGet (AOP (result), offset++));
+ }
+ freeAsmop (left, NULL, ic, TRUE);
+ freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
static void
genShiftLeftLit (iCode * ic)
{
- operand *left, *right, *result;
- int size, shCount, offset = 0;
- int lByteZ = 0;
-
- right = IC_RIGHT (ic);
- left = IC_LEFT (ic);
- result = IC_RESULT (ic);
-
- aopOp (left, ic, FALSE);
- aopOp (result, ic, FALSE);
- size = AOP_SIZE (result);
- shCount = (int) floatFromVal (AOP (right)->aopu.aop_lit);
-
- if (shCount > (size * 8 - 1))
- {
- while (size--)
- aopPut (AOP (result), zero, offset++);
- goto release;
- }
- switch (size)
- {
- case 1:
- if (!sameRegs (AOP (left), AOP (result)))
- aopPut (AOP (result), aopGet (AOP (left), 0), 0);
- if (shCount >= 4)
- {
- emitcode ("swap", "%s", aopGet (AOP (result), 0));
- emitcode ("andi", "%s,0xf0");
- shCount -= 4;
- }
- if (shCount == 1)
- {
- emitcode ("add", "%s,%s", aopGet (AOP (result), 0), aopGet (AOP (result), 0));
- shCount--;
- }
- while (shCount--)
- emitcode ("lsl", "%s", aopGet (AOP (result), 0));
- break;
- case 2:
- if (shCount >= 12)
- {
- aopPut (AOP (result), aopGet (AOP (left), 0), 1);
- aopPut (AOP (result), zero, 0);
- emitcode ("swap", "%s", aopGet (AOP (result), 1));
- emitcode ("andi", "%s,0xf0", aopGet (AOP (result), 1));
- shCount -= 12;
- lByteZ = 1;
- }
- if (shCount >= 8)
- {
- aopPut (AOP (result), aopGet (AOP (left), 0), 1);
- aopPut (AOP (result), zero, 0);
- shCount -= 8;
- lByteZ = 1;
- }
- if (shCount >= 4)
- {
- shCount -= 4;
- if (!sameRegs (AOP (left), AOP (result)))
- {
- aopPut (AOP (result), aopGet (AOP (left), 0), 0);
- aopPut (AOP (result), aopGet (AOP (left), 1), 1);
- }
- emitcode ("mov", "r1,%s", aopGet (AOP (result), 0));
- emitcode ("swap", "%s", aopGet (AOP (result), 0));
- emitcode ("andi", "%s,0xf0", aopGet (AOP (result), 0));
- emitcode ("andi", "r1,0x0f");
- emitcode ("swap", "%s", aopGet (AOP (result), 1));
- emitcode ("andi", "%s,0xf0", aopGet (AOP (result), 1));
- emitcode ("or", "%s,r1", aopGet (AOP (result), 1));
- while (shCount--)
- {
- emitcode ("lsl", "%s", aopGet (AOP (result), 0));
- emitcode ("rol", "%s", aopGet (AOP (result), 1));
- }
- }
- if (!lByteZ && !sameRegs (AOP (result), AOP (left)) && shCount)
- {
- offset = 0;
- while (size--)
- {
- aopPut (AOP (result), aopGet (AOP (left), offset), offset);
- offset++;
- }
- }
- while (shCount--)
- {
- if (lByteZ)
- {
- emitcode ("lsl", "%s", aopGet (AOP (result), 1));
- }
- else
- {
- emitcode ("lsl", "%s", aopGet (AOP (result), 0));
- emitcode ("rol", "%s", aopGet (AOP (result), 1));
- }
- }
- break;
- case 3:
- assert ("shifting generic pointer ?\n");
- break;
- case 4:
- /* 32 bits we do only byte boundaries */
- if (shCount >= 24)
- {
- aopPut (AOP (result), aopGet (AOP (left), 0), 3);
- aopPut (AOP (result), zero, 2);
- aopPut (AOP (result), zero, 1);
- aopPut (AOP (result), zero, 0);
- lByteZ = 3;
- shCount -= 24;
- }
- if (shCount >= 16)
- {
- aopPut (AOP (result), aopGet (AOP (left), 0), 3);
- aopPut (AOP (result), aopGet (AOP (left), 1), 2);
- aopPut (AOP (result), zero, 1);
- aopPut (AOP (result), zero, 0);
- lByteZ = 2;
- shCount -= 16;
- }
- if (shCount >= 8)
- {
- aopPut (AOP (result), aopGet (AOP (left), 0), 3);
- aopPut (AOP (result), aopGet (AOP (left), 1), 2);
- aopPut (AOP (result), aopGet (AOP (left), 2), 1);
- aopPut (AOP (result), zero, 0);
- shCount -= 8;
- lByteZ = 1;
- }
- if (!lByteZ && !sameRegs (AOP (left), AOP (right)))
- {
- offset = 0;
- while (size--)
- {
- aopPut (AOP (result), aopGet (AOP (left), offset), offset);
- offset++;
- }
- offset = 0;
- size = AOP_SIZE (result);
- }
- if (shCount)
- {
- switch (lByteZ)
- {
- case 0:
- while (shCount--)
- {
- emitcode ("lsl", "%s", aopGet (AOP (result), 0));
- emitcode ("rol", "%s", aopGet (AOP (result), 1));
- emitcode ("rol", "%s", aopGet (AOP (result), 2));
- emitcode ("rol", "%s", aopGet (AOP (result), 3));
- }
- break;
- case 1:
- while (shCount--)
- {
- emitcode ("lsl", "%s", aopGet (AOP (result), 1));
- emitcode ("rol", "%s", aopGet (AOP (result), 2));
- emitcode ("rol", "%s", aopGet (AOP (result), 3));
+ operand *left, *right, *result;
+ int size, shCount, offset = 0;
+ int lByteZ = 0;
+
+ right = IC_RIGHT (ic);
+ left = IC_LEFT (ic);
+ result = IC_RESULT (ic);
+
+ aopOp (left, ic, FALSE);
+ aopOp (result, ic, FALSE);
+ size = AOP_SIZE (result);
+ shCount = (int) floatFromVal (AOP (right)->aopu.aop_lit);
+
+ if (shCount > (size * 8 - 1)) {
+ while (size--)
+ aopPut (AOP (result), zero, offset++);
+ goto release;
+ }
+ switch (size) {
+ case 1:
+ if (!sameRegs (AOP (left), AOP (result)))
+ aopPut (AOP (result), aopGet (AOP (left), 0), 0);
+ if (shCount >= 4) {
+ if (AOP_ISHIGHREG(AOP(result),0)) {
+ emitcode ("swap", "%s", aopGet (AOP (result), 0));
+ emitcode ("andi", "%s,0xf0");
+ } else {
+ emitcode ("ldi","r24,0xf0");
+ emitcode ("swap", "%s", aopGet (AOP (result), 0));
+ emitcode ("and", "%s,r24");
+ }
+ shCount -= 4;
+ }
+ if (shCount == 1) {
+ emitcode ("add", "%s,%s", aopGet (AOP (result), 0),
+ aopGet (AOP (result), 0));
+ shCount--;
+ }
+ while (shCount--)
+ emitcode ("lsl", "%s", aopGet (AOP (result), 0));
+ break;
+ case 2:
+ if (shCount >= 12) {
+ aopPut (AOP (result), aopGet (AOP (left), 0), 1);
+ aopPut (AOP (result), zero, 0);
+ emitcode ("swap", "%s", aopGet (AOP (result), 1));
+ if (AOP_ISHIGHREG(AOP(result),1)) {
+ emitcode ("andi", "%s,0xf0", aopGet (AOP (result), 1));
+ } else {
+ emitcode ("ldi","r24,0xf0");
+ emitcode ("and", "%s,r24", aopGet (AOP (result), 1));
+ }
+ shCount -= 12;
+ lByteZ = 1;
+ }
+ if (shCount >= 8) {
+ aopPut (AOP (result), aopGet (AOP (left), 0), 1);
+ aopPut (AOP (result), zero, 0);
+ shCount -= 8;
+ lByteZ = 1;
+ }
+ if (shCount >= 4) {
+ shCount -= 4;
+ if (!sameRegs (AOP (left), AOP (result))) {
+ aopPut (AOP (result), aopGet (AOP (left), 0),
+ 0);
+ aopPut (AOP (result), aopGet (AOP (left), 1),
+ 1);
+ }
+ emitcode ("mov", "r24,%s", aopGet (AOP (result), 0));
+ emitcode ("andi", "r24,0x0f");
+ if (!(AOP_ISHIGHREG(AOP(result),0) && AOP_ISHIGHREG(AOP(result),1))) {
+ emitcode("ldi","r25,0xf0");
+ }
+ emitcode ("swap", "%s", aopGet (AOP (result), 0));
+ if (AOP_ISHIGHREG(AOP(result),0)) {
+ emitcode ("andi", "%s,0xf0", aopGet (AOP (result), 0));
+ } else {
+ emitcode ("and", "%s,r25", aopGet (AOP (result), 0));
+ }
+ emitcode ("swap", "%s", aopGet (AOP (result), 1));
+ if (AOP_ISHIGHREG(AOP(result),1)) {
+ emitcode ("andi", "%s,0xf0", aopGet (AOP (result), 1));
+ } else {
+ emitcode ("and", "%s,r25", aopGet (AOP (result), 1));
+ }
+ emitcode ("or", "%s,r24", aopGet (AOP (result), 1));
+ while (shCount--) {
+ emitcode ("lsl", "%s", aopGet (AOP (result), 0));
+ emitcode ("rol", "%s", aopGet (AOP (result), 1));
+ }
+ }
+ if (!lByteZ && !sameRegs (AOP (result), AOP (left))
+ && shCount) {
+ offset = 0;
+ while (size--) {
+ aopPut (AOP (result),
+ aopGet (AOP (left), offset), offset);
+ offset++;
+ }
+ }
+ while (shCount--) {
+ if (lByteZ) {
+ emitcode ("lsl", "%s", aopGet (AOP (result), 1));
+ }
+ else {
+ emitcode ("lsl", "%s", aopGet (AOP (result), 0));
+ emitcode ("rol", "%s", aopGet (AOP (result), 1));
+ }
+ }
+ break;
+ case 3:
+ assert ("shifting generic pointer ?\n");
+ break;
+ case 4:
+ /* 32 bits we do only byte boundaries */
+ if (shCount >= 24) {
+ aopPut (AOP (result), aopGet (AOP (left), 0), 3);
+ aopPut (AOP (result), zero, 2);
+ aopPut (AOP (result), zero, 1);
+ aopPut (AOP (result), zero, 0);
+ lByteZ = 3;
+ shCount -= 24;
+ }
+ if (shCount >= 16) {
+ aopPut (AOP (result), aopGet (AOP (left), 0), 3);
+ aopPut (AOP (result), aopGet (AOP (left), 1), 2);
+ aopPut (AOP (result), zero, 1);
+ aopPut (AOP (result), zero, 0);
+ lByteZ = 2;
+ shCount -= 16;
+ }
+ if (shCount >= 8) {
+ aopPut (AOP (result), aopGet (AOP (left), 0), 3);
+ aopPut (AOP (result), aopGet (AOP (left), 1), 2);
+ aopPut (AOP (result), aopGet (AOP (left), 2), 1);
+ aopPut (AOP (result), zero, 0);
+ shCount -= 8;
+ lByteZ = 1;
+ }
+ if (!lByteZ && !sameRegs (AOP (left), AOP (right))) {
+ offset = 0;
+ while (size--) {
+ aopPut (AOP (result),
+ aopGet (AOP (left), offset), offset);
+ offset++;
+ }
+ offset = 0;
+ size = AOP_SIZE (result);
+ }
+ if (shCount) {
+ switch (lByteZ) {
+ case 0:
+ while (shCount--) {
+ emitcode ("lsl", "%s", aopGet (AOP (result), 0));
+ emitcode ("rol", "%s", aopGet (AOP (result), 1));
+ emitcode ("rol", "%s", aopGet (AOP (result), 2));
+ emitcode ("rol", "%s", aopGet (AOP (result), 3));
+ }
+ break;
+ case 1:
+ while (shCount--) {
+ emitcode ("lsl", "%s", aopGet (AOP (result), 1));
+ emitcode ("rol", "%s", aopGet (AOP (result), 2));
+ emitcode ("rol", "%s", aopGet (AOP (result), 3));
+ }
+ break;
+ case 2:
+ while (shCount--) {
+ emitcode ("lsl", "%s", aopGet (AOP (result), 2));
+ emitcode ("rol", "%s", aopGet (AOP (result), 3));
+ }
+ break;
+ case 3:
+ while (shCount--) {
+ emitcode ("lsl", "%s", aopGet (AOP (result), 3));
+ }
+ break;
+ }
+ }
+ }
+
+ release:
+ freeAsmop (left, NULL, ic, TRUE);
+ freeAsmop (right, NULL, ic, TRUE);
+ freeAsmop (result, NULL, ic, TRUE);
+}
+
+/*-----------------------------------------------------------------*/
+/* genLeftShift - generates code for left shifting */
+/*-----------------------------------------------------------------*/
+static void
+genLeftShift (iCode * ic)
+{
+ operand *left, *right, *result;
+ int size, offset;
+ symbol *tlbl;
+
+ right = IC_RIGHT (ic);
+ left = IC_LEFT (ic);
+ result = IC_RESULT (ic);
+
+ aopOp (right, ic, FALSE);
+
+ if (AOP_TYPE (right) == AOP_LIT) {
+ genShiftLeftLit (ic);
+ return;
+ }
+
+ /* unknown count */
+ aopOp (left, ic, FALSE);
+ aopOp (result, ic, FALSE);
+ size = AOP_SIZE (result);
+ offset = 0;
+ if (AOP_SIZE (right) > 1) {
+ if (isRegPair (AOP (right))) {
+ emitcode ("movw", "r24,%s", aopGet (AOP (right), 0));
+ }
+ else {
+ emitcode ("mov", "r24,%s", aopGet (AOP (right), 0));
+ emitcode ("mov", "r25,%s", aopGet (AOP (right), 1));
+ }
+ }
+ else {
+ emitcode ("mov", "r24,%s", aopGet (AOP (right), 0));
+ }
+ if (!sameRegs (AOP (left), AOP (result))) {
+ while (size--) {
+ aopPut (AOP (result), aopGet (AOP (left), offset),
+ offset);
+ offset++;
+ }
+ size = AOP_SIZE (result);
+ }
+ tlbl = newiTempLabel (NULL);
+ emitcode ("", "L%05d:", tlbl->key);
+ offset = 0;
+ while (size--) {
+ if (offset)
+ emitcode ("rol", "%s", aopGet (AOP (result), offset));
+ else
+ emitcode ("lsl", "%s", aopGet (AOP (result), 0));
+ offset++;
+ }
+ if (AOP_SIZE (right) > 1)
+ emitcode ("sbiw", "r24,1");
+ else
+ emitcode ("dec", "r24");
+ emitcode ("brne", "L%05d", tlbl->key);
+
+ freeAsmop (left, NULL, ic, TRUE);
+ freeAsmop (right, NULL, ic, TRUE);
+ freeAsmop (result, NULL, ic, TRUE);
+}
+
+/*-----------------------------------------------------------------*/
+/* genShiftRightLit - generate for right shift with known count */
+/*-----------------------------------------------------------------*/
+static void
+genShiftRightLit (iCode * ic)
+{
+ operand *left = IC_LEFT (ic)
+ , *right = IC_RIGHT (ic)
+ , *result = IC_RESULT (ic);
+ int size, shCount, offset = 0;
+ int hByteZ = 0;
+ sym_link *letype = getSpec (operandType (left));
+ int sign = !SPEC_USIGN (letype);
+
+ right = IC_RIGHT (ic);
+ left = IC_LEFT (ic);
+ result = IC_RESULT (ic);
+
+ aopOp (left, ic, FALSE);
+ aopOp (result, ic, FALSE);
+ size = AOP_SIZE (result);
+ shCount = (int) floatFromVal (AOP (right)->aopu.aop_lit);
+
+ /* if signed then give up and use a loop to shift */
+ if (sign) {
+ symbol *tlbl;
+ if (!sameRegs (AOP (left), AOP (result))) {
+ while (size--) {
+ aopPut (AOP (result),
+ aopGet (AOP (left), offset), offset);
+ offset++;
+ }
+ size = AOP_SIZE (result);
+ offset = 0;
+ }
+ /* be as economical as possible */
+ if (shCount <= 4) {
+ while (shCount--) {
+ size = AOP_SIZE (result);
+ offset = size - 1;
+ while (size--) {
+ /* highest order byte */
+ if (offset == (AOP_SIZE(result)-1))
+ emitcode ("asr", "%s", aopGet (AOP (result), offset));
+ else
+ emitcode ("ror", "%s", aopGet (AOP (result), offset));
+ offset--;
+ }
+ }
+ }
+ else {
+ emitcode ("ldi", "r24,<(%d)", shCount);
+ tlbl = newiTempLabel (NULL);
+ emitcode ("", "L%05d:", tlbl->key);
+ offset = size - 1;
+ while (size--) {
+ if (offset == (AOP_SIZE(result) - 1))
+ emitcode ("asr", "%s", aopGet (AOP (result), offset));
+ else
+ emitcode ("ror", "%s", aopGet (AOP (result), offset));
+ offset--;
+ }
+ emitcode ("dec", "r24");
+ emitcode ("brne", "L%05d", tlbl->key);
+ }
+ goto release;
+ }
+ if (shCount > (size * 8 - 1)) {
+ while (size--)
+ aopPut (AOP (result), zero, offset++);
+ goto release;
+ }
+ /* for unsigned we can much more efficient */
+ switch (size) {
+ case 1:
+ if (!sameRegs (AOP (left), AOP (result)))
+ aopPut (AOP (result), aopGet (AOP (left), 0), 0);
+ if (shCount >= 4) {
+ emitcode ("swap", "%s", aopGet (AOP (result), 0));
+ if (AOP_ISHIGHREG(AOP(result),0)) {
+ emitcode ("andi", "%s,0x0f",aopGet(AOP(result),0));
+ } else {
+ emitcode ("ldi","r24,0x0f");
+ emitcode ("and", "%s,r24",aopGet(AOP(result),0));
+ }
+ shCount -= 4;
+ }
+ while (shCount--)
+ emitcode ("lsr", "%s", aopGet (AOP (result), 0));
+ break;
+ case 2:
+ if (shCount >= 12) {
+ aopPut (AOP (result), aopGet (AOP (left), 1), 0);
+ aopPut (AOP (result), zero, 1);
+ emitcode ("swap", "%s", aopGet (AOP (result), 0));
+ if (AOP_ISHIGHREG(AOP(result),0)) {
+ emitcode ("andi", "%s,0x0f", aopGet (AOP (result), 0));
+ } else {
+ emitcode ("ldi","r24,0x0f");
+ emitcode ("and", "%s,r24",aopGet(AOP(result),0));
+ }
+ shCount -= 12;
+ hByteZ = 1;
+ }
+ if (shCount >= 8) {
+ aopPut (AOP (result), aopGet (AOP (left), 1), 0);
+ aopPut (AOP (result), zero, 1);
+ shCount -= 8;
+ hByteZ = 1;
+ }
+ if (shCount >= 4) {
+ shCount -= 4;
+ if (!sameRegs (AOP (left), AOP (result))) {
+ aopPut (AOP (result), aopGet (AOP (left), 0), 0);
+ aopPut (AOP (result), aopGet (AOP (left), 1), 1);
+ }
+ if (!(AOP_ISHIGHREG(AOP(result),0) && AOP_ISHIGHREG(AOP(result),1))) {
+ emitcode("ldi","r25,0x0f");
+ }
+ emitcode ("mov", "r24,%s", aopGet (AOP (result), 1));
+ emitcode ("andi", "r24,0xf0");
+ emitcode ("swap", "%s", aopGet (AOP (result), 0));
+ if (AOP_ISHIGHREG(AOP(result),0)) {
+ emitcode ("andi", "%s,0x0f", aopGet (AOP (result), 0));
+ } else {
+ emitcode ("and", "%s,r25", aopGet (AOP (result), 0));
+ }
+ emitcode ("or", "%s,r24", aopGet (AOP (result), 0));
+ emitcode ("swap", "%s", aopGet (AOP (result), 1));
+ if (AOP_ISHIGHREG(AOP(result),1)) {
+ emitcode ("andi", "%s,0x0f", aopGet (AOP (result), 1));
+ } else {
+ emitcode ("and", "%s,r24", aopGet (AOP (result), 1));
+ }
+ while (shCount--) {
+ emitcode ("lsr", "%s", aopGet (AOP (result), 1));
+ emitcode ("ror", "%s", aopGet (AOP (result), 0));
+ }
+
+ }
+ if (!hByteZ && !sameRegs (AOP (result), AOP (left))
+ && shCount) {
+ offset = 0;
+ while (size--) {
+ aopPut (AOP (result), aopGet (AOP (left), offset), offset);
+ offset++;
+ }
+ }
+ while (shCount--) {
+ if (hByteZ) {
+ emitcode ("lsr", "%s", aopGet (AOP (result), 0));
+ }
+ else {
+ emitcode ("lsr", "%s", aopGet (AOP (result), 1));
+ emitcode ("ror", "%s", aopGet (AOP (result), 0));
+ }
}
- break;
- case 2:
- while (shCount--)
- {
- emitcode ("lsl", "%s", aopGet (AOP (result), 2));
- emitcode ("rol", "%s", aopGet (AOP (result), 3));
+ break;
+
+ case 3:
+ assert ("shifting generic pointer ?\n");
+ break;
+ case 4:
+ /* 32 bits we do only byte boundaries */
+ if (shCount >= 24) {
+ aopPut (AOP (result), aopGet (AOP (left), 3), 0);
+ aopPut (AOP (result), zero, 1);
+ aopPut (AOP (result), zero, 2);
+ aopPut (AOP (result), zero, 3);
+ hByteZ = 3;
+ shCount -= 24;
}
- break;
- case 3:
- while (shCount--)
- {
- emitcode ("lsl", "%s", aopGet (AOP (result), 3));
+ if (shCount >= 16) {
+ aopPut (AOP (result), aopGet (AOP (left), 3), 1);
+ aopPut (AOP (result), aopGet (AOP (left), 2), 0);
+ aopPut (AOP (result), zero, 2);
+ aopPut (AOP (result), zero, 3);
+ hByteZ = 2;
+ shCount -= 16;
+ }
+ if (shCount >= 8) {
+ aopPut (AOP (result), aopGet (AOP (left), 1), 0);
+ aopPut (AOP (result), aopGet (AOP (left), 2), 1);
+ aopPut (AOP (result), aopGet (AOP (left), 3), 2);
+ aopPut (AOP (result), zero, 3);
+ shCount -= 8;
+ hByteZ = 1;
+ }
+ if (!hByteZ && !sameRegs (AOP (left), AOP (right))) {
+ offset = 0;
+ while (size--) {
+ aopPut (AOP (result),
+ aopGet (AOP (left), offset), offset);
+ offset++;
+ }
+ offset = 0;
+ size = AOP_SIZE (result);
+ }
+ if (shCount) {
+ switch (hByteZ) {
+ case 0:
+ while (shCount--) {
+ emitcode ("lsr", "%s", aopGet (AOP (result), 3));
+ emitcode ("ror", "%s", aopGet (AOP (result), 2));
+ emitcode ("ror", "%s", aopGet (AOP (result), 1));
+ emitcode ("ror", "%s", aopGet (AOP (result), 0));
+ }
+ break;
+ case 1:
+ while (shCount--) {
+ emitcode ("lsr", "%s", aopGet (AOP (result), 2));
+ emitcode ("ror", "%s", aopGet (AOP (result), 1));
+ emitcode ("ror", "%s", aopGet (AOP (result), 0));
+ }
+ break;
+ case 2:
+ while (shCount--) {
+ emitcode ("lsr", "%s", aopGet (AOP (result), 1));
+ emitcode ("ror", "%s", aopGet (AOP (result), 0));
+ }
+ break;
+ case 3:
+ while (shCount--) {
+ emitcode ("lsr", "%s", aopGet (AOP (result), 0));
+ }
+ break;
+ }
}
- break;
- }
}
- }
-
-release:
- freeAsmop (left, NULL, ic, TRUE);
- freeAsmop (right, NULL, ic, TRUE);
- freeAsmop (result, NULL, ic, TRUE);
-}
-
-/*-----------------------------------------------------------------*/
-/* genLeftShift - generates code for left shifting */
-/*-----------------------------------------------------------------*/
-static void
-genLeftShift (iCode * ic)
-{
- operand *left, *right, *result;
- int size, offset;
- symbol *tlbl;
-
- right = IC_RIGHT (ic);
- left = IC_LEFT (ic);
- result = IC_RESULT (ic);
-
- aopOp (right, ic, FALSE);
-
- if (AOP_TYPE (right) == AOP_LIT)
- {
- genShiftLeftLit (ic);
- return;
- }
-
- /* unknown count */
- aopOp (left, ic, FALSE);
- aopOp (result, ic, FALSE);
- size = AOP_SIZE (result);
- offset = 0;
- if (AOP_SIZE (right) > 1)
- {
- if (isRegPair (AOP (right)))
- {
- emitcode ("movw", "r24,%s", aopGet (AOP (right), 0));
- }
- else
- {
- emitcode ("mov", "r24,%s", aopGet (AOP (right), 0));
- emitcode ("mov", "r25,%s", aopGet (AOP (right), 1));
- }
- }
- else
- {
- emitcode ("mov", "r24,%s", aopGet (AOP (right), 0));
- }
- if (!sameRegs (AOP (left), AOP (result)))
- {
- while (size--)
- {
- aopPut (AOP (result), aopGet (AOP (left), offset), offset);
- offset++;
- }
- size = AOP_SIZE (result);
- }
- tlbl = newiTempLabel (NULL);
- emitcode ("", "L%05d:", tlbl->key);
- offset = 0;
- while (size--)
- {
- if (offset)
- emitcode ("rol", "%s", aopGet (AOP (result), offset));
- else
- emitcode ("lsl", "%s", aopGet (AOP (result), 0));
- offset++;
- }
- if (AOP_SIZE (right) > 1)
- emitcode ("sbiw", "r24,1");
- else
- emitcode ("dec", "r24");
- emitcode ("brne", "L%05d", tlbl->key);
-
- freeAsmop (left, NULL, ic, TRUE);
- freeAsmop (right, NULL, ic, TRUE);
- freeAsmop (result, NULL, ic, TRUE);
+ release:
+ freeAsmop (left, NULL, ic, TRUE);
+ freeAsmop (right, NULL, ic, TRUE);
+ freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
-/* genShiftRightLit - generate for right shift with known count */
+/* genRightShift - generate code for right shifting */
/*-----------------------------------------------------------------*/
static void
-genShiftRightLit (iCode * ic)
+genRightShift (iCode * ic)
{
- operand *left = IC_LEFT (ic)
- ,*right = IC_RIGHT (ic)
- ,*result = IC_RESULT (ic);
- int size, shCount, offset = 0;
- int hByteZ = 0;
- sym_link *letype = getSpec (operandType (left));
- int sign = !SPEC_USIGN (letype);
-
- right = IC_RIGHT (ic);
- left = IC_LEFT (ic);
- result = IC_RESULT (ic);
-
- aopOp (left, ic, FALSE);
- aopOp (result, ic, FALSE);
- size = AOP_SIZE (result);
- shCount = (int) floatFromVal (AOP (right)->aopu.aop_lit);
-
- /* if signed then give up and use a loop to shift */
- if (sign)
- {
- symbol *tlbl;
- if (!sameRegs (AOP (left), AOP (result)))
- {
- while (size--)
- {
- aopPut (AOP (result), aopGet (AOP (left), offset), offset);
- offset++;
- }
- size = size = AOP_SIZE (result);
- offset = 0;
- }
- /* be as economical as possible */
- if (shCount <= 4)
- {
- offset = size - 1;
- while (shCount--)
- {
- offset = size - 1;
- size = AOP_SIZE (result);
- while (size--)
- {
- if (offset == (size - 1))
- emitcode ("asr", "%s", aopGet (AOP (result), offset));
- else
- emitcode ("lsr", "%s", aopGet (AOP (result), offset));
- offset--;
- }
- }
- }
- else
- {
- emitcode ("ldi", "r24,lo8(%d)", shCount);
- tlbl = newiTempLabel (NULL);
- emitcode ("", "L%05d:", tlbl->key);
- offset = size - 1;
- while (size--)
- {
- if (offset == (size - 1))
- emitcode ("asr", "%s", aopGet (AOP (result), offset));
- else
- emitcode ("lsr", "%s", aopGet (AOP (result), offset));
- offset--;
- }
- emitcode ("dec", "r24");
- emitcode ("brne", "L%05d", tlbl->key);
- }
- goto release;
- }
- if (shCount > (size * 8 - 1))
- {
- while (size--)
- aopPut (AOP (result), zero, offset++);
- goto release;
- }
- /* for unsigned we can much more efficient */
- switch (size)
- {
- case 1:
- if (!sameRegs (AOP (left), AOP (result)))
- aopPut (AOP (result), aopGet (AOP (left), 0), 0);
- if (shCount >= 4)
- {
- emitcode ("swap", "%s", aopGet (AOP (result), 0));
- emitcode ("andi", "%s,0x0f");
- shCount -= 4;
- }
- while (shCount--)
- emitcode ("lsr", "%s", aopGet (AOP (result), 0));
- break;
- case 2:
- if (shCount >= 12)
- {
- aopPut (AOP (result), aopGet (AOP (left), 1), 0);
- aopPut (AOP (result), zero, 1);
- emitcode ("swap", "%s", aopGet (AOP (result), 0));
- emitcode ("andi", "%s,0x0f", aopGet (AOP (result), 0));
- shCount -= 12;
- hByteZ = 1;
- }
- if (shCount >= 8)
- {
- aopPut (AOP (result), aopGet (AOP (left), 1), 0);
- aopPut (AOP (result), zero, 1);
- shCount -= 8;
- hByteZ = 1;
- }
- if (shCount >= 4)
- {
- shCount -= 4;
- if (!sameRegs (AOP (left), AOP (result)))
- {
- aopPut (AOP (result), aopGet (AOP (left), 0), 0);
- aopPut (AOP (result), aopGet (AOP (left), 1), 1);
- }
- emitcode ("mov", "r1,%s", aopGet (AOP (result), 1));
- emitcode ("swap", "%s", aopGet (AOP (result), 0));
- emitcode ("andi", "%s,0x0f", aopGet (AOP (result), 0));
- emitcode ("andi", "r1,0xf0");
- emitcode ("or", "%s,r1", aopGet (AOP (result), 0));
- emitcode ("swap", "%s", aopGet (AOP (result), 1));
- emitcode ("andi", "%s,0x0f", aopGet (AOP (result), 1));
- while (shCount--)
- {
- emitcode ("lsr", "%s", aopGet (AOP (result), 1));
- emitcode ("ror", "%s", aopGet (AOP (result), 0));
- }
-
- }
- if (!hByteZ && !sameRegs (AOP (result), AOP (left)) && shCount)
- {
- offset = 0;
- while (size--)
- {
- aopPut (AOP (result), aopGet (AOP (left), offset), offset);
- offset++;
- }
- }
- while (shCount--)
- {
- if (hByteZ)
- {
- emitcode ("lsr", "%s", aopGet (AOP (result), 0));
- }
- else
- {
- emitcode ("lsr", "%s", aopGet (AOP (result), 1));
- emitcode ("ror", "%s", aopGet (AOP (result), 0));
- }
- }
- break;
-
- case 3:
- assert ("shifting generic pointer ?\n");
- break;
- case 4:
- /* 32 bits we do only byte boundaries */
- if (shCount >= 24)
- {
- aopPut (AOP (result), aopGet (AOP (left), 3), 0);
- aopPut (AOP (result), zero, 1);
- aopPut (AOP (result), zero, 2);
- aopPut (AOP (result), zero, 3);
- hByteZ = 3;
- shCount -= 24;
- }
- if (shCount >= 16)
- {
- aopPut (AOP (result), aopGet (AOP (left), 3), 1);
- aopPut (AOP (result), aopGet (AOP (left), 2), 0);
- aopPut (AOP (result), zero, 2);
- aopPut (AOP (result), zero, 3);
- hByteZ = 2;
- shCount -= 16;
- }
- if (shCount >= 8)
- {
- aopPut (AOP (result), aopGet (AOP (left), 1), 0);
- aopPut (AOP (result), aopGet (AOP (left), 2), 1);
- aopPut (AOP (result), aopGet (AOP (left), 3), 2);
- aopPut (AOP (result), zero, 3);
- shCount -= 8;
- hByteZ = 1;
- }
- if (!hByteZ && !sameRegs (AOP (left), AOP (right)))
- {
- offset = 0;
- while (size--)
- {
- aopPut (AOP (result), aopGet (AOP (left), offset), offset);
- offset++;
- }
- offset = 0;
- size = AOP_SIZE (result);
- }
- if (shCount)
- {
- switch (hByteZ)
- {
- case 0:
- while (shCount--)
- {
- emitcode ("lsr", "%s", aopGet (AOP (result), 3));
- emitcode ("ror", "%s", aopGet (AOP (result), 2));
- emitcode ("ror", "%s", aopGet (AOP (result), 1));
- emitcode ("ror", "%s", aopGet (AOP (result), 0));
- }
- break;
- case 1:
- while (shCount--)
- {
- emitcode ("lsr", "%s", aopGet (AOP (result), 2));
- emitcode ("ror", "%s", aopGet (AOP (result), 1));
- emitcode ("ror", "%s", aopGet (AOP (result), 0));
+ operand *right, *left, *result;
+ sym_link *letype;
+ int size, offset;
+ int sign = 0, first = 1;
+ symbol *tlbl;
+
+ aopOp (right = IC_RIGHT (ic), ic, FALSE);
+
+ if (AOP_TYPE (right) == AOP_LIT) {
+ genShiftRightLit (ic);
+ return;
+ }
+ /* unknown count */
+ if (AOP_SIZE (right) > 1) {
+ if (isRegPair (AOP (right))) {
+ emitcode ("movw", "r24,%s", aopGet (AOP (right), 0));
}
- break;
- case 2:
- while (shCount--)
- {
- emitcode ("lsr", "%s", aopGet (AOP (result), 1));
- emitcode ("ror", "%s", aopGet (AOP (result), 0));
- }
- break;
- case 3:
- while (shCount--)
- {
- emitcode ("lsr", "%s", aopGet (AOP (result), 0));
+ else {
+ emitcode ("mov", "r24,%s", aopGet (AOP (right), 0));
+ emitcode ("mov", "r25,%s", aopGet (AOP (right), 1));
}
- break;
- }
}
- }
-release:
- freeAsmop (left, NULL, ic, TRUE);
- freeAsmop (right, NULL, ic, TRUE);
- freeAsmop (result, NULL, ic, TRUE);
+ else {
+ emitcode ("mov", "r24,%s", aopGet (AOP (right), 0));
+ }
+ aopOp (left = IC_LEFT (ic), ic, FALSE);
+ aopOp (result = IC_RESULT (ic), ic, FALSE);
+ size = AOP_SIZE (result);
+ tlbl = newiTempLabel (NULL);
+ emitcode ("", "L%05d:", tlbl->key);
+ offset = size - 1;
+ letype = getSpec (operandType (left));
+ sign = !SPEC_USIGN (letype);
+ if (!sameRegs (AOP (left), AOP (result))) {
+ while (size--) {
+ aopPut (AOP (result), aopGet (AOP (left), offset), offset);
+ offset++;
+ }
+ size = AOP_SIZE (result);
+ }
+ size = AOP_SIZE (result);
+ while (size--) {
+ if (first) {
+ if (sign)
+ emitcode ("asr", "%s", aopGet (AOP (result), offset));
+ else
+ emitcode ("lsr", "%s", aopGet (AOP (result), offset));
+ first = 0;
+ }
+ else
+ emitcode ("ror", "%s", aopGet (AOP (result), offset));
+ offset--;
+ }
+ if (AOP_SIZE (right) > 1)
+ emitcode ("sbiw", "r24,1");
+ else
+ emitcode ("dec", "r24");
+ emitcode ("brne", "L%05d", tlbl->key);
+
+ freeAsmop (left, NULL, ic, TRUE);
+ freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
-/* genRightShift - generate code for right shifting */
+/* RRsh - shift right rn by known count */
/*-----------------------------------------------------------------*/
static void
-genRightShift (iCode * ic)
+RRsh (int shCount,int reg)
{
- operand *right, *left, *result;
- sym_link *letype;
- int size, offset;
- int sign = 0, first = 1;
- symbol *tlbl;
-
- aopOp (right = IC_RIGHT (ic), ic, FALSE);
- if (AOP_TYPE (right) == AOP_LIT)
- {
- genShiftRightLit (ic);
- return;
- }
- /* unknown count */
- if (AOP_SIZE (right) > 1)
- {
- if (isRegPair (AOP (right)))
- {
- emitcode ("movw", "r24,%s", aopGet (AOP (right), 0));
- }
- else
- {
- emitcode ("mov", "r24,%s", aopGet (AOP (right), 0));
- emitcode ("mov", "r25,%s", aopGet (AOP (right), 1));
- }
- }
- else
- {
- emitcode ("mov", "r24,%s", aopGet (AOP (right), 0));
- }
- aopOp (left = IC_LEFT (ic), ic, FALSE);
- aopOp (result = IC_RESULT (ic), ic, FALSE);
- size = AOP_SIZE (result);
- tlbl = newiTempLabel (NULL);
- emitcode ("", "L%05d:", tlbl->key);
- offset = size - 1;
- letype = getSpec (operandType (left));
- sign = !SPEC_USIGN (letype);
- if (!sameRegs (AOP (left), AOP (result)))
- {
- while (size--)
- {
- aopPut (AOP (result), aopGet (AOP (left), offset), offset);
- offset++;
- }
- size = AOP_SIZE (result);
- }
- size = AOP_SIZE (result);
- while (size--)
- {
- if (first)
- {
- if (sign)
- emitcode ("asr", "%s", aopGet (AOP (result), offset));
- else
- emitcode ("lsr", "%s", aopGet (AOP (result), offset));
- first = 0;
- }
- else
- emitcode ("ror", "%s", aopGet (AOP (result), offset));
- offset--;
- }
- if (AOP_SIZE (right) > 1)
- emitcode ("sbiw", "r24,1");
- else
- emitcode ("dec", "r24");
- emitcode ("brne", "L%05d", tlbl->key);
-
- freeAsmop (left, NULL, ic, TRUE);
- freeAsmop (result, NULL, ic, TRUE);
+ shCount &= 0x0007; // shCount : 0..7
+
+ switch (shCount) {
+ case 0:
+ break;
+ case 1:
+ emitcode ("lsr", "r%d",reg);
+ break;
+ case 2:
+ emitcode ("lsr", "r%d",reg);
+ emitcode ("lsr", "r%d",reg);
+ break;
+ case 3:
+ emitcode ("swap", "r%d",reg);
+ emitcode ("lsl", "r%d",reg);
+ break;
+ case 4:
+ emitcode ("swap", "r%d",reg);
+ break;
+ case 5:
+ emitcode ("swap", "r%d",reg);
+ emitcode ("lsr", "r%d",reg);
+ break;
+ case 6:
+ emitcode ("swap","r%d",reg);
+ emitcode ("lsr", "r%d",reg);
+ emitcode ("lsr", "r%d",reg);
+ break;
+ case 7:
+ emitcode ("swap","r%d",reg);
+ emitcode ("lsr", "r%d",reg);
+ emitcode ("lsr", "r%d",reg);
+ emitcode ("lsr", "r%d",reg);
+ break;
+ }
}
/*-----------------------------------------------------------------*/
-/* R0Rsh - shift right r0 by known count */
+/* RLsh - shift left rn by known count */
/*-----------------------------------------------------------------*/
static void
-R0Rsh (int shCount)
+RLsh (int shCount, int reg)
{
- shCount &= 0x0007; // shCount : 0..7
-
- switch (shCount)
- {
- case 0:
- break;
- case 1:
- emitcode ("lsr", "r0");
- break;
- case 2:
- emitcode ("lsr", "r0");
- emitcode ("lsr", "r0");
- break;
- case 3:
- emitcode ("swap", "r0");
- emitcode ("lsl", "r0");
- break;
- case 4:
- emitcode ("swap", "r0");
- break;
- case 5:
- emitcode ("swap", "r0");
- emitcode ("lsr", "r0");
- break;
- case 6:
- emitcode ("swap", "r0");
- emitcode ("lsr", "r0");
- emitcode ("lsr", "r0");
- break;
- case 7:
- emitcode ("swap", "r0");
- emitcode ("lsr", "r0");
- emitcode ("lsr", "r0");
- emitcode ("lsr", "r0");
- break;
- }
+ shCount &= 0x0007; // shCount : 0..7
+
+ switch (shCount) {
+ case 0:
+ break;
+ case 1:
+ emitcode ("lsl", "r%d",reg);
+ break;
+ case 2:
+ emitcode ("lsl", "r%d",reg);
+ emitcode ("lsl", "r%d",reg);
+ break;
+ case 3:
+ emitcode ("swap","r%d",reg);
+ emitcode ("lsr", "r%d",reg);
+ break;
+ case 4:
+ emitcode ("swap", "r%d",reg);
+ break;
+ case 5:
+ emitcode ("swap","r%d",reg);
+ emitcode ("lsl", "r%d",reg);
+ break;
+ case 6:
+ emitcode ("swap","r%d",reg);
+ emitcode ("lsl", "r%d",reg);
+ emitcode ("lsl", "r%d",reg);
+ break;
+ case 7:
+ emitcode ("swap","r%d",reg);
+ emitcode ("lsl", "r%d",reg);
+ emitcode ("lsl", "r%d",reg);
+ emitcode ("lsl", "r%d",reg);
+ break;
+ }
}
/*-----------------------------------------------------------------*/
static void
genUnpackBits (operand * result, char *rname, int ptype)
{
- int shCnt;
- int rlen = 0;
- sym_link *etype;
- int offset = 0;
-
- etype = getSpec (operandType (result));
-
- /* read the first byte */
- switch (ptype)
- {
-
- case POINTER:
- case IPOINTER:
- case PPOINTER:
- case FPOINTER:
- emitcode ("ld", "r0,%s+", rname);
- break;
-
- case CPOINTER:
- emitcode ("ldm", "r0,%s+", rname);
- break;
-
- case GPOINTER:
- emitcode ("call", "__gptrget_pi");
- break;
- }
-
- /* 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))
- {
-
- /* shift right r0 */
- R0Rsh (shCnt);
- emitcode ("andi", "r0,0x%02x",
- ((unsigned char) -1) >> (8 - SPEC_BLEN (etype)));
-
- aopPut (AOP (result), "r0", offset);
- return;
- }
-
- /* bit field did not fit in a byte */
- rlen = SPEC_BLEN (etype) - 8;
- aopPut (AOP (result), "a", offset++);
-
- while (1)
- {
-
- switch (ptype)
- {
+ 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) {
+
case POINTER:
case IPOINTER:
case PPOINTER:
case FPOINTER:
- emitcode ("ld", "r0,%s+", rname);
- break;
+ emitcode ("ld", "r24,%s+", rname);
+ break;
case CPOINTER:
- emitcode ("ldm", "r0,%s+", rname);
- break;
+ emitcode ("lpm", "r24,%s+", rname);
+ break;
case GPOINTER:
- emitcode ("lcall", "__gptrget_pi");
- break;
+ emitcode ("call","__gptrget_pi");
+ emitcode ("mov","r24,r0");
+ break;
}
- rlen -= 8;
- /* if we are done */
- if (rlen <= 0)
- 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)) {
- aopPut (AOP (result), "r0", offset++);
+ /* shift right acc */
+ RRsh (shCnt,24);
- }
+ emitcode ("andi", "r24,lo(0x%x)",
+ ((unsigned char) -1) >> (8 - SPEC_BLEN (etype)));
+ aopPut (AOP (result), "r24", offset++);
+ goto finish;
+ }
- if (rlen)
- {
- emitcode ("andi", "r0,#0x%02x", ((unsigned char) -1) >> (-rlen));
- aopPut (AOP (result), "r0", offset);
- }
+ /* bit field did not fit in a byte */
+ aopPut (AOP (result), "r24", offset++);
- return;
-}
+ while (1) {
+
+ switch (ptype) {
+
+ case POINTER:
+ case IPOINTER:
+ case PPOINTER:
+ case FPOINTER:
+ emitcode ("ld", "r24,%s+");
+ break;
+
+ case CPOINTER:
+ emitcode ("lpm", "r24,%s+");
+ break;
+
+ case GPOINTER:
+ emitcode ("call", "__gptrget_pi");
+ break;
+ }
+
+ rlen -= 8;
+ /* if we are done */
+ if (rlen < 8)
+ break;
+
+ aopPut (AOP (result), "r24", offset++);
+
+ }
+ if (rlen) {
+ aopPut (AOP (result), "r24", offset++);
+ }
+
+ finish:
+ if (offset < rsize) {
+ rsize -= offset;
+ while (rsize--)
+ aopPut (AOP (result), zero, offset++);
+ }
+ return;
+}
/*-----------------------------------------------------------------*/
/* genDataPointerGet - generates code when ptr offset is known */
/*-----------------------------------------------------------------*/
static void
-genDataPointerGet (operand * left,
- operand * result,
- iCode * ic)
+genDataPointerGet (operand * left, operand * result, iCode * ic)
{
- char *l;
- char buffer[256];
- int size, offset = 0;
- aopOp (result, ic, TRUE);
-
- /* get the string representation of the name */
- l = aopGet (AOP (left), 0);
- size = AOP_SIZE (result);
- while (size--)
- {
- if (offset)
- sprintf (buffer, "(%s + %d)", l + 1, offset);
- else
- sprintf (buffer, "%s", l + 1);
- emitcode ("lds", "%s,%s", aopGet (AOP (result), offset++), buffer);
- }
-
- freeAsmop (left, NULL, ic, TRUE);
- freeAsmop (result, NULL, ic, TRUE);
+ char *l;
+ char buffer[256];
+ int size, offset = 0;
+ aopOp (result, ic, TRUE);
+
+ /* get the string representation of the name */
+ l = aopGet (AOP (left), 0);
+ size = AOP_SIZE (result);
+ while (size--) {
+ if (offset)
+ sprintf (buffer, "(%s + %d)", l, offset);
+ else
+ sprintf (buffer, "%s", l);
+ emitcode ("lds", "%s,%s", aopGet (AOP (result), offset++),
+ buffer);
+ }
+
+ freeAsmop (left, NULL, ic, TRUE);
+ freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
/* genNearPointerGet - emitcode for near pointer fetch */
/*-----------------------------------------------------------------*/
static void
-genNearPointerGet (operand * left,
- operand * result,
- iCode * ic)
+genMemPointerGet (operand * left, operand * result, iCode * ic, iCode *pi)
{
- asmop *aop = NULL;
- regs *preg = NULL;
- char *rname;
- sym_link *rtype, *retype;
- sym_link *ltype = operandType (left);
- char buffer[80];
-
- rtype = operandType (result);
- retype = getSpec (rtype);
-
- aopOp (left, ic, FALSE);
-
- /* if left is rematerialisable and
- result is not bit variable type and
- the left is pointer to data space i.e
- lower 128 bytes of space */
- if (AOP_TYPE (left) == AOP_IMMD &&
- !IS_BITVAR (retype) &&
- DCL_TYPE (ltype) == POINTER)
- {
- genDataPointerGet (left, result, ic);
- return;
- }
-
- /* 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, 0);
- emitcode ("mov", "%s,%s",
- preg->name,
- aopGet (AOP (left), 0));
- rname = preg->name;
- }
- else
- rname = aopGet (AOP (left), 0);
-
- freeAsmop (left, NULL, ic, TRUE);
- aopOp (result, ic, FALSE);
-
- /* if bitfield then unpack the bits */
- if (IS_BITVAR (retype))
- genUnpackBits (result, rname, POINTER);
- else
- {
- /* we have can just get the values */
- int size = AOP_SIZE (result);
- int offset = 0;
-
- while (size--)
- {
- if (IS_AOP_PREG (result) || AOP_TYPE (result) == AOP_STK)
- {
-
- emitcode ("mov", "a,@%s", rname);
- aopPut (AOP (result), "a", offset);
- }
- else
- {
- sprintf (buffer, "@%s", rname);
- aopPut (AOP (result), buffer, offset);
- }
- offset++;
- if (size)
- emitcode ("inc", "%s", rname);
- }
- }
-
- /* now some housekeeping stuff */
- if (aop)
- {
- /* we had to allocate for this iCode */
- freeAsmop (NULL, aop, ic, TRUE);
- }
- else
- {
- /* we did not allocate which means left
- already in a pointer register, then
- if size > 0 && this could be used again
- we have to point it back to where it
- belongs */
- if (AOP_SIZE (result) > 1 &&
- !OP_SYMBOL (left)->remat &&
- (OP_SYMBOL (left)->liveTo > ic->seq ||
- ic->depth))
- {
- int size = AOP_SIZE (result) - 1;
- while (size--)
- emitcode ("dec", "%s", rname);
- }
- }
-
- /* done */
- freeAsmop (result, NULL, ic, TRUE);
-
-}
+ asmop *aop = NULL;
+ regs *preg = NULL;
+ int gotFreePtr = 0;
+ char *rname, *frname = NULL;
+ sym_link *rtype, *retype;
+ sym_link *ltype = operandType (left);
+
+ rtype = operandType (result);
+ retype = getSpec (rtype);
+
+ aopOp (left, ic, FALSE);
+
+ /* if left is rematerialisable and
+ result is not bit variable type and
+ the left is pointer to data space i.e
+ lower 128 bytes of space */
+ if (AOP_TYPE (left) == AOP_IMMD &&
+ !IS_BITVAR (retype) && DCL_TYPE (ltype) == POINTER) {
+ genDataPointerGet (left, result, ic);
+ return;
+ }
+
+ /* 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, 0);
+ if (isRegPair (AOP (left) )) {
+ emitcode ("movw", "%s,%s",
+ aop->aopu.aop_ptr->name,
+ aopGet(AOP(left),0));
+ } else {
+ emitcode ("mov", "%s,%s", aop->aopu.aop_ptr->name,
+ aopGet (AOP (left), 0));
+ emitcode ("mov", "%s,%s", aop->aop_ptr2->name,
+ aopGet (AOP (left), 1));
+ }
+ gotFreePtr = 1;
+ }
+ else {
+ aop = AOP(left);
+ frname = aopGet(aop,0);
+ }
+ if (AOP_ISX(aop)) {
+ rname = "X";
+ } else if (AOP_ISZ(aop)) {
+ rname = "Z";
+ } else {
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "pointer not in correct register");
+ exit (0);
+ }
+
+ aopOp (result, ic, FALSE);
+
+ /* if bitfield then unpack the bits */
+ if (IS_BITVAR (retype))
+ genUnpackBits (result, rname, POINTER);
+ else {
+ /* we have can just get the values */
+ int size = AOP_SIZE (result);
+ int offset = 0;
+
+ while (size--) {
+ if (size || pi) {
+ emitcode ("ld","%s,%s+",aopGet(AOP(result),offset), rname);
+ } else {
+ emitcode ("ld","%s,%s",aopGet(AOP(result),offset), rname);
+ }
+ }
+ }
-/*-----------------------------------------------------------------*/
-/* genPagedPointerGet - emitcode for paged pointer fetch */
-/*-----------------------------------------------------------------*/
-static void
-genPagedPointerGet (operand * left,
- operand * result,
- iCode * ic)
-{
- asmop *aop = NULL;
- regs *preg = NULL;
- char *rname;
- sym_link *rtype, *retype;
-
- rtype = operandType (result);
- retype = getSpec (rtype);
-
- aopOp (left, ic, FALSE);
-
- /* 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, 0);
- emitcode ("mov", "%s,%s",
- preg->name,
- aopGet (AOP (left), 0));
- rname = preg->name;
- }
- else
- rname = aopGet (AOP (left), 0);
-
- freeAsmop (left, NULL, ic, TRUE);
- aopOp (result, ic, FALSE);
-
- /* if bitfield then unpack the bits */
- if (IS_BITVAR (retype))
- genUnpackBits (result, rname, PPOINTER);
- else
- {
- /* we have can just get the values */
- int size = AOP_SIZE (result);
- int offset = 0;
-
- while (size--)
- {
-
- emitcode ("movx", "a,@%s", rname);
- aopPut (AOP (result), "a", offset);
-
- offset++;
-
- if (size)
- emitcode ("inc", "%s", rname);
- }
- }
-
- /* now some housekeeping stuff */
- if (aop)
- {
- /* we had to allocate for this iCode */
- freeAsmop (NULL, aop, ic, TRUE);
- }
- else
- {
- /* we did not allocate which means left
- already in a pointer register, then
- if size > 0 && this could be used again
- we have to point it back to where it
- belongs */
- if (AOP_SIZE (result) > 1 &&
- !OP_SYMBOL (left)->remat &&
- (OP_SYMBOL (left)->liveTo > ic->seq ||
- ic->depth))
- {
- int size = AOP_SIZE (result) - 1;
- while (size--)
- emitcode ("dec", "%s", rname);
- }
- }
-
- /* done */
- freeAsmop (result, NULL, ic, TRUE);
+ /* now some housekeeping stuff */
+ if (gotFreePtr) {
+ /* we had to allocate for this iCode */
+ if (pi) {
+ if (isRegPair (AOP (left) )) {
+ emitcode ("movw", "%s,%s",
+ aopGet (AOP(left),0),
+ aop->aopu.aop_ptr->name);
+ } else {
+ emitcode ("mov", "%s,%s",
+ aopGet (AOP (left), 0),
+ aop->aopu.aop_ptr->name);
+ emitcode ("mov", "%s,%s",
+ aopGet (AOP (left), 1),
+ aop->aop_ptr2->name);
+ }
+ }
+ freeAsmop (NULL, aop, ic, TRUE);
+ } else {
+
+ /* we did not allocate which means left
+ already in a pointer register, then
+ if size > 0 && this could be used again
+ we have to point it back to where it
+ belongs */
+ if ((AOP_SIZE (result) > 1 &&
+ !OP_SYMBOL (left)->remat &&
+ (OP_SYMBOL (left)->liveTo > ic->seq || ic->depth)) && !pi) {
+ int size = AOP_SIZE (result) - 1;
+ emitcode ("sbiw", "%s,%d",frname,size);
+ }
+ }
+ /* done */
+ if (pi) pi->generated = 1;
+ freeAsmop (left, NULL, ic, TRUE);
+ freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
-/* genFarPointerGet - gget value from far space */
+/* genCodePointerGet - gget value from code space */
/*-----------------------------------------------------------------*/
static void
-genFarPointerGet (operand * left,
- operand * result, iCode * ic)
+genCodePointerGet (operand * left, operand * result, iCode * ic, iCode *pi)
{
- int size, offset;
- sym_link *retype = getSpec (operandType (result));
-
- aopOp (left, ic, FALSE);
-
- /* if the operand is already in dptr
- then we do nothing else we move the value to dptr */
- if (AOP_TYPE (left) != AOP_STR)
- {
- /* if this is remateriazable */
- if (AOP_TYPE (left) == AOP_IMMD)
- emitcode ("mov", "dptr,%s", aopGet (AOP (left), 0));
- else
- { /* we need to get it byte by byte */
- emitcode ("mov", "dpl,%s", aopGet (AOP (left), 0));
- emitcode ("mov", "dph,%s", aopGet (AOP (left), 1));
- if (options.model == MODEL_FLAT24)
- {
- emitcode ("mov", "dpx,%s", aopGet (AOP (left), 2));
- }
- }
- }
- /* so dptr know contains the address */
- freeAsmop (left, NULL, ic, TRUE);
- aopOp (result, ic, FALSE);
-
- /* if bit then unpack */
- if (IS_BITVAR (retype))
- genUnpackBits (result, "dptr", FPOINTER);
- else
- {
- size = AOP_SIZE (result);
- offset = 0;
-
- while (size--)
- {
- emitcode ("movx", "a,@dptr");
- aopPut (AOP (result), "a", offset++);
- if (size)
- emitcode ("inc", "dptr");
- }
- }
-
- freeAsmop (result, NULL, ic, TRUE);
-}
+ int size, offset;
+ sym_link *retype = getSpec (operandType (result));
+ asmop *aop = NULL;
+ int gotFreePtr = 0;
+
+ aopOp (left, ic, FALSE);
+
+ /* if the operand is already in Z register
+ then we do nothing else we move the value to Z register */
+ if (AOP_ISZ(AOP(left))) {
+ aop = AOP (left);
+ } else {
+ aop = newAsmop(0);
+ getFreePtr(ic,&aop,FALSE,TRUE);
+ if (isRegPair(AOP (left))) {
+ emitcode ("movw","r30,%s",aopGet (AOP (left), 0));
+ } else {
+ emitcode ("mov", "r30,%s", aopGet (AOP (left), 0));
+ emitcode ("mov", "r31,%s", aopGet (AOP (left), 1));
+ }
+ gotFreePtr = 1;
+ }
+
+ aopOp (result, ic, FALSE);
+
+ /* if bit then unpack */
+ if (IS_BITVAR (retype))
+ genUnpackBits (result, "Z", CPOINTER);
+ else {
+ size = AOP_SIZE (result);
+ offset = 0;
+
+ while (size--) {
+ if (size || pi) {
+ emitcode ("lpm","%s,Z+",aopGet(AOP(result),offset++));
+ } else {
+ emitcode ("lpm","%s,Z",aopGet(AOP(result),offset++));
+ }
+ }
+ }
+
+ /* now some housekeeping stuff */
+ if (gotFreePtr) {
+ /* we had to allocate for this iCode */
+ if (pi) {
+ if (isRegPair(AOP (left))) {
+ emitcode ("movw","%s,r30",aopGet (AOP (left), 0));
+ } else {
+ emitcode ("mov", "%s,r30", aopGet (AOP (left), 0));
+ emitcode ("mov", "%s,r31", aopGet (AOP (left), 1));
+ }
+ }
+ freeAsmop (NULL, aop, ic, TRUE);
+ } else {
+
+ /* we did not allocate which means left
+ already in a pointer register, then
+ if size > 0 && this could be used again
+ we have to point it back to where it
+ belongs */
+ if ((AOP_SIZE (result) > 1 &&
+ !OP_SYMBOL (left)->remat &&
+ (OP_SYMBOL (left)->liveTo > ic->seq || ic->depth)) &&
+ !pi) {
+ int size = AOP_SIZE (result) - 1;
+ emitcode ("sbiw", "r30,%d",size);
+ }
+ }
+
+ /* done */
+ if (pi) pi->generated=1;
+ freeAsmop (left, NULL, ic, TRUE);
+ freeAsmop (result, NULL, ic, TRUE);
-/*-----------------------------------------------------------------*/
-/* emitcodePointerGet - gget value from code space */
-/*-----------------------------------------------------------------*/
-static void
-emitcodePointerGet (operand * left,
- operand * result, iCode * ic)
-{
- int size, offset;
- sym_link *retype = getSpec (operandType (result));
-
- aopOp (left, ic, FALSE);
-
- /* if the operand is already in dptr
- then we do nothing else we move the value to dptr */
- if (AOP_TYPE (left) != AOP_STR)
- {
- /* if this is remateriazable */
- if (AOP_TYPE (left) == AOP_IMMD)
- emitcode ("mov", "dptr,%s", aopGet (AOP (left), 0));
- else
- { /* we need to get it byte by byte */
- emitcode ("mov", "dpl,%s", aopGet (AOP (left), 0));
- emitcode ("mov", "dph,%s", aopGet (AOP (left), 1));
- if (options.model == MODEL_FLAT24)
- {
- emitcode ("mov", "dpx,%s", aopGet (AOP (left), 2));
- }
- }
- }
- /* so dptr know contains the address */
- freeAsmop (left, NULL, ic, TRUE);
- aopOp (result, ic, FALSE);
-
- /* if bit then unpack */
- if (IS_BITVAR (retype))
- genUnpackBits (result, "dptr", CPOINTER);
- else
- {
- size = AOP_SIZE (result);
- offset = 0;
-
- while (size--)
- {
- emitcode ("clr", "a");
- emitcode ("movc", "a,@a+dptr");
- aopPut (AOP (result), "a", offset++);
- if (size)
- emitcode ("inc", "dptr");
- }
- }
-
- freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
/* genGenPointerGet - gget value from generic pointer space */
/*-----------------------------------------------------------------*/
static void
-genGenPointerGet (operand * left,
- operand * result, iCode * ic)
+genGenPointerGet (operand * left, operand * result, iCode * ic, iCode *pi)
{
- int size, offset;
- sym_link *retype = getSpec (operandType (result));
-
- aopOp (left, ic, FALSE);
-
- /* if the operand is already in dptr
- then we do nothing else we move the value to dptr */
- if (AOP_TYPE (left) != AOP_STR)
- {
- /* if this is remateriazable */
- if (AOP_TYPE (left) == AOP_IMMD)
- {
- emitcode ("mov", "dptr,%s", aopGet (AOP (left), 0));
- emitcode ("mov", "b,#%d", pointerCode (retype));
- }
- else
- { /* we need to get it byte by byte */
- emitcode ("mov", "dpl,%s", aopGet (AOP (left), 0));
- emitcode ("mov", "dph,%s", aopGet (AOP (left), 1));
- if (options.model == MODEL_FLAT24)
- {
- emitcode ("mov", "dpx,%s", aopGet (AOP (left), 2));
- emitcode ("mov", "b,%s", aopGet (AOP (left), 3));
- }
- else
- {
- emitcode ("mov", "b,%s", aopGet (AOP (left), 2));
- }
- }
- }
- /* so dptr know contains the address */
- freeAsmop (left, NULL, ic, TRUE);
- aopOp (result, ic, FALSE);
-
- /* if bit then unpack */
- if (IS_BITVAR (retype))
- genUnpackBits (result, "dptr", GPOINTER);
- else
- {
- size = AOP_SIZE (result);
- offset = 0;
-
- while (size--)
- {
- emitcode ("lcall", "__gptrget");
- aopPut (AOP (result), "a", offset++);
- if (size)
- emitcode ("inc", "dptr");
- }
- }
-
- freeAsmop (result, NULL, ic, TRUE);
+ int size, offset;
+ int gotFreePtr = 0;
+ sym_link *retype = getSpec (operandType (result));
+ asmop *aop = NULL;
+
+ aopOp (left, ic, FALSE);
+
+ /* if the operand is already in dptr
+ then we do nothing else we move the value to dptr */
+ if (AOP_ISZ(AOP(left))) {
+ aop = AOP(left);
+ } else {
+ aop = newAsmop(0);
+ getFreePtr(ic,&aop,FALSE,TRUE);
+ if (isRegPair(AOP(left))) {
+ emitcode ("movw", "r30,%s", aopGet (AOP (left), 0));
+ } else {
+ emitcode ("mov", "r30,%s", aopGet (AOP (left), 0));
+ emitcode ("mov", "r31,%s", aopGet (AOP (left), 1));
+ }
+ emitcode ("mov", "r24,%s", aopGet (AOP (left), 2));
+ gotFreePtr=1;
+ }
+
+ /* so Z register now contains the address */
+
+ aopOp (result, ic, FALSE);
+
+ /* if bit then unpack */
+ if (IS_BITVAR (retype))
+ genUnpackBits (result, "Z", GPOINTER);
+ else {
+ size = AOP_SIZE (result);
+ offset = 0;
+
+ while (size--) {
+ if (size || pi)
+ emitcode ("call", "__gptrget_pi");
+ else
+ emitcode ("call", "__gptrget");
+ aopPut (AOP (result), "r0", offset++);
+ }
+ }
+
+
+ /* now some housekeeping stuff */
+ if (gotFreePtr) {
+ /* we had to allocate for this iCode */
+ if (pi) {
+ if (isRegPair(AOP (left))) {
+ emitcode ("movw","%s,r30",aopGet (AOP (left), 0));
+ } else {
+ emitcode ("mov", "%s,r30", aopGet (AOP (left), 0));
+ emitcode ("mov", "%s,r31", aopGet (AOP (left), 1));
+ }
+ }
+ freeAsmop (NULL, aop, ic, TRUE);
+ } else {
+
+ /* we did not allocate which means left
+ already in a pointer register, then
+ if size > 0 && this could be used again
+ we have to point it back to where it
+ belongs */
+ if ((AOP_SIZE (result) > 1 &&
+ !OP_SYMBOL (left)->remat &&
+ (OP_SYMBOL (left)->liveTo > ic->seq || ic->depth)) &&
+ !pi) {
+ int size = AOP_SIZE (result) - 1;
+ emitcode ("sbiw", "r30,%d",size);
+ }
+ }
+ if (pi) pi->generated=1;
+ freeAsmop (left, NULL, ic, TRUE);
+ freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
/* genPointerGet - generate code for pointer get */
/*-----------------------------------------------------------------*/
static void
-genPointerGet (iCode * ic)
+genPointerGet (iCode * ic, iCode *pi)
{
- operand *left, *result;
- sym_link *type, *etype;
- int p_type;
-
- left = IC_LEFT (ic);
- result = IC_RESULT (ic);
-
- /* depending on the type of pointer we need to
- move it to the correct pointer register */
- type = operandType (left);
- etype = getSpec (type);
- /* if left is of type of pointer then it is simple */
- if (IS_PTR (type) && !IS_FUNC (type->next))
- p_type = DCL_TYPE (type);
- else
- {
- /* we have to go by the storage class */
- p_type = PTR_TYPE (SPEC_OCLS (etype));
-
- /* if (SPEC_OCLS(etype)->codesp ) { */
- /* p_type = CPOINTER ; */
- /* } */
- /* else */
- /* if (SPEC_OCLS(etype)->fmap && !SPEC_OCLS(etype)->paged) */
- /* p_type = FPOINTER ; */
- /* else */
- /* if (SPEC_OCLS(etype)->fmap && SPEC_OCLS(etype)->paged) */
- /* p_type = PPOINTER; */
- /* else */
- /* if (SPEC_OCLS(etype) == idata ) */
- /* p_type = IPOINTER; */
- /* else */
- /* p_type = POINTER ; */
- }
-
- /* now that we have the pointer type we assign
- the pointer values */
- switch (p_type)
- {
-
- case POINTER:
- case IPOINTER:
- genNearPointerGet (left, result, ic);
- break;
-
- case PPOINTER:
- genPagedPointerGet (left, result, ic);
- break;
-
- case FPOINTER:
- genFarPointerGet (left, result, ic);
- break;
-
- case CPOINTER:
- emitcodePointerGet (left, result, ic);
- break;
-
- case GPOINTER:
- genGenPointerGet (left, result, ic);
- break;
- }
+ operand *left, *result;
+ sym_link *type, *etype;
+ int p_type;
+
+ left = IC_LEFT (ic);
+ result = IC_RESULT (ic);
+
+ /* depending on the type of pointer we need to
+ move it to the correct pointer register */
+ type = operandType (left);
+ etype = getSpec (type);
+ /* if left is of type of pointer then it is simple */
+ if (IS_PTR (type) && !IS_FUNC (type->next))
+ p_type = DCL_TYPE (type);
+ else {
+ /* we have to go by the storage class */
+ p_type = PTR_TYPE (SPEC_OCLS (etype));
+
+
+ }
+
+ /* now that we have the pointer type we assign
+ the pointer values */
+ switch (p_type) {
+
+ case POINTER:
+ case IPOINTER:
+ case PPOINTER:
+ case FPOINTER:
+ genMemPointerGet (left, result, ic, pi);
+ break;
+
+ case CPOINTER:
+ genCodePointerGet (left, result, ic, pi);
+ break;
+
+ case GPOINTER:
+ genGenPointerGet (left, result, ic, pi);
+ break;
+ }
}
operand * right,
char *rname, int p_type)
{
- int shCount = 0;
- int offset = 0;
- int rLen = 0;
- int blen, bstr;
- char *l;
-
- blen = SPEC_BLEN (etype);
- bstr = SPEC_BSTR (etype);
-
- l = aopGet (AOP (right), offset++);
- MOVA (l);
-
- /* if the bit lenth is less than or */
- /* it exactly fits a byte then */
- if (SPEC_BLEN (etype) <= 8)
- {
- shCount = SPEC_BSTR (etype);
-
- /* shift left acc */
- // AccLsh(shCount);
-
- 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 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)
- {
-
- l = aopGet (AOP (right), offset++);
-
- rLen -= 8;
- if (rLen <= 0)
- break;
-
- switch (p_type)
- {
- case POINTER:
- if (*l == '@')
- {
- MOVA (l);
- emitcode ("mov", "@%s,a", rname);
- }
- else
- emitcode ("mov", "@%s,%s", rname, l);
- break;
+ int shCount = 0;
+ int offset = 0;
+ int rLen = 0;
+ int blen, bstr;
+ char *l;
+
+ blen = SPEC_BLEN (etype);
+ bstr = SPEC_BSTR (etype);
+
+ l = aopGet (AOP (right), offset++);
+ MOVR24 (l);
+
+ /* if the bit lenth is less than or */
+ /* it exactly fits a byte then */
+ if (SPEC_BLEN (etype) <= 8) {
+ shCount = SPEC_BSTR (etype);
+
+ /* shift left acc */
+ RLsh (shCount,24);
+
+ if (SPEC_BLEN (etype) < 8) { /* if smaller than a byte */
+
+ switch (p_type) {
+ case POINTER:
+ case IPOINTER:
+ case PPOINTER:
+ case FPOINTER:
+ emitcode ("ld", "r1,%s",rname);
+ break;
+
+ case GPOINTER:
+ emitcode ("push", "r1");
+ emitcode ("push", "r24");
+ emitcode ("call", "__gptrget");
+ emitcode ("pop", "r1");
+ emitcode ("mov","r24,r0");
+ break;
+ }
+
+ emitcode ("andi", "r24,#0x%02x", (unsigned char)
+ ((unsigned char) (0xFF << (blen + bstr)) |
+ (unsigned char) (0xFF >> (8 - bstr))));
+ emitcode ("or", "r24,r1");
+ if (p_type == GPOINTER)
+ emitcode ("pop", "r1");
+ }
+ }
+ switch (p_type) {
+ case POINTER:
+ case IPOINTER:
+ case PPOINTER:
case FPOINTER:
- MOVA (l);
- emitcode ("movx", "@dptr,a");
- break;
+ emitcode("st","%s+,r24");
+ break;
case GPOINTER:
- MOVA (l);
- emitcode ("lcall", "__gptrput");
- break;
+ emitcode("mov","r0,r24");
+ emitcode ("call", "__gptrput_pi");
+ break;
}
- emitcode ("inc", "%s", rname);
- }
- MOVA (l);
+ /* if we r done */
+ if (SPEC_BLEN (etype) <= 8)
+ return;
- /* last last was not complete */
- if (rLen)
- {
- /* save the byte & read byte */
- switch (p_type)
- {
- case POINTER:
- emitcode ("mov", "b,a");
- emitcode ("mov", "a,@%s", rname);
- break;
+ rLen = SPEC_BLEN (etype);
- case FPOINTER:
- emitcode ("mov", "b,a");
- emitcode ("movx", "a,@dptr");
- break;
+ /* now generate for lengths greater than one byte */
+ while (1) {
- case GPOINTER:
- emitcode ("push", "b");
- emitcode ("push", "acc");
- emitcode ("lcall", "__gptrget");
- emitcode ("pop", "b");
- break;
- }
+ l = aopGet (AOP (right), offset++);
- emitcode ("anl", "a,#0x%02x", ((unsigned char) -1 << -rLen));
- emitcode ("orl", "a,b");
- }
+ rLen -= 8;
+ if (rLen < 8)
+ break;
- if (p_type == GPOINTER)
- emitcode ("pop", "b");
+ switch (p_type) {
+ case POINTER:
+ case IPOINTER:
+ case PPOINTER:
+ case FPOINTER:
+ emitcode ("st", "%s+,%s",rname,l);
+ break;
- switch (p_type)
- {
+ case GPOINTER:
+ MOVR0 (l);
+ emitcode ("lcall", "__gptrput_pi");
+ break;
+ }
+ }
- case POINTER:
- emitcode ("mov", "@%s,a", rname);
- break;
+ MOVR24 (l);
+
+ /* last last was not complete */
+ if (rLen) {
+ /* save the byte & read byte */
+ switch (p_type) {
+ case POINTER:
+ case IPOINTER:
+ case PPOINTER:
+ case FPOINTER:
+ emitcode ("st","%s+,r24",rname);
+ break;
+ case GPOINTER:
+ emitcode ("push", "r1");
+ emitcode ("push", "r24");
+ emitcode ("lcall", "__gptrget");
+ emitcode ("mov","r24,r0");
+ emitcode ("pop", "r1");
+ break;
+ }
- case FPOINTER:
- emitcode ("movx", "@dptr,a");
- break;
+ emitcode ("andi", "r24,0x%02x", (((unsigned char) -1 << rLen) & 0xff));
+ emitcode ("or", "r24,r1");
+ }
- case GPOINTER:
- emitcode ("lcall", "__gptrput");
- break;
- }
-}
-/*-----------------------------------------------------------------*/
-/* genDataPointerSet - remat pointer to data space */
-/*-----------------------------------------------------------------*/
-static void
-genDataPointerSet (operand * right,
- operand * result,
- iCode * ic)
-{
- int size, offset = 0;
- char *l, buffer[256];
-
- aopOp (right, ic, FALSE);
-
- l = aopGet (AOP (result), 0);
- size = AOP_SIZE (right);
- while (size--)
- {
- if (offset)
- sprintf (buffer, "(%s + %d)", l + 1, offset);
- else
- sprintf (buffer, "%s", l + 1);
- emitcode ("mov", "%s,%s", buffer,
- aopGet (AOP (right), offset++));
- }
-
- freeAsmop (right, NULL, ic, TRUE);
- freeAsmop (result, NULL, ic, TRUE);
-}
+ if (p_type == GPOINTER)
+ emitcode ("pop", "r1");
-/*-----------------------------------------------------------------*/
-/* genNearPointerSet - emitcode for near pointer put */
-/*-----------------------------------------------------------------*/
-static void
-genNearPointerSet (operand * right,
- operand * result,
- iCode * ic)
-{
- asmop *aop = NULL;
- regs *preg = NULL;
- char *rname, *l;
- sym_link *retype;
- sym_link *ptype = operandType (result);
-
- retype = getSpec (operandType (right));
-
- aopOp (result, ic, FALSE);
-
- /* if the result is rematerializable &
- in data space & not a bit variable */
- if (AOP_TYPE (result) == AOP_IMMD &&
- DCL_TYPE (ptype) == POINTER &&
- !IS_BITVAR (retype))
- {
- 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, 0);
- emitcode ("mov", "%s,%s",
- preg->name,
- aopGet (AOP (result), 0));
- rname = preg->name;
- }
- else
- rname = aopGet (AOP (result), 0);
-
- freeAsmop (result, NULL, ic, TRUE);
- aopOp (right, ic, FALSE);
-
- /* if bitfield then unpack the bits */
- if (IS_BITVAR (retype))
- genPackBits (retype, right, rname, POINTER);
- else
- {
- /* we have can just get the values */
- int size = AOP_SIZE (right);
- int offset = 0;
-
- while (size--)
- {
- l = aopGet (AOP (right), offset);
- if (*l == '@')
- {
- MOVA (l);
- emitcode ("mov", "@%s,a", rname);
- }
- else
- emitcode ("mov", "@%s,%s", rname, l);
- if (size)
- emitcode ("inc", "%s", rname);
- offset++;
- }
- }
-
- /* now some housekeeping stuff */
- if (aop)
- {
- /* we had to allocate for this iCode */
- freeAsmop (NULL, aop, ic, TRUE);
- }
- else
- {
- /* we did not allocate which means left
- already in a pointer register, then
- if size > 0 && this could be used again
- we have to point it back to where it
- belongs */
- if (AOP_SIZE (right) > 1 &&
- !OP_SYMBOL (result)->remat &&
- (OP_SYMBOL (result)->liveTo > ic->seq ||
- ic->depth))
- {
- int size = AOP_SIZE (right) - 1;
- while (size--)
- emitcode ("dec", "%s", rname);
- }
- }
-
- /* done */
- freeAsmop (right, NULL, ic, TRUE);
+ switch (p_type) {
+ case POINTER:
+ case IPOINTER:
+ case PPOINTER:
+ case FPOINTER:
+ emitcode ("st", "%s,r24", rname);
+ break;
+ case GPOINTER:
+ emitcode ("mov","r0,r24");
+ emitcode ("call", "__gptrput");
+ break;
+ }
}
/*-----------------------------------------------------------------*/
-/* genPagedPointerSet - emitcode for Paged pointer put */
+/* genDataPointerSet - remat pointer to data space */
/*-----------------------------------------------------------------*/
static void
-genPagedPointerSet (operand * right,
- operand * result,
- iCode * ic)
+genDataPointerSet (operand * right, operand * result, iCode * ic)
{
- asmop *aop = NULL;
- regs *preg = NULL;
- char *rname, *l;
- sym_link *retype;
-
- retype = getSpec (operandType (right));
-
- aopOp (result, ic, FALSE);
-
- /* 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, 0);
- emitcode ("mov", "%s,%s",
- preg->name,
- aopGet (AOP (result), 0));
- rname = preg->name;
- }
- else
- rname = aopGet (AOP (result), 0);
-
- freeAsmop (result, NULL, ic, TRUE);
- aopOp (right, ic, FALSE);
-
- /* if bitfield then unpack the bits */
- if (IS_BITVAR (retype))
- genPackBits (retype, right, rname, PPOINTER);
- else
- {
- /* we have can just get the values */
- int size = AOP_SIZE (right);
- int offset = 0;
-
- while (size--)
- {
- l = aopGet (AOP (right), offset);
-
- MOVA (l);
- emitcode ("movx", "@%s,a", rname);
-
- if (size)
- emitcode ("inc", "%s", rname);
-
- offset++;
- }
- }
-
- /* now some housekeeping stuff */
- if (aop)
- {
- /* we had to allocate for this iCode */
- freeAsmop (NULL, aop, ic, TRUE);
- }
- else
- {
- /* we did not allocate which means left
- already in a pointer register, then
- if size > 0 && this could be used again
- we have to point it back to where it
- belongs */
- if (AOP_SIZE (right) > 1 &&
- !OP_SYMBOL (result)->remat &&
- (OP_SYMBOL (result)->liveTo > ic->seq ||
- ic->depth))
- {
- int size = AOP_SIZE (right) - 1;
- while (size--)
- emitcode ("dec", "%s", rname);
- }
- }
-
- /* done */
- freeAsmop (right, NULL, ic, TRUE);
+ int size, offset = 0;
+ char *l, buffer[256];
+
+ aopOp (right, ic, FALSE);
+ l = aopGet (AOP (result), 0);
+ size = AOP_SIZE (right);
+ while (size--) {
+ if (offset)
+ sprintf (buffer, "(%s + %d)", l, offset);
+ else
+ sprintf (buffer, "%s", l);
+ emitcode ("sts", "%s,%s", buffer,
+ aopGet (AOP (right), offset++));
+ }
+ freeAsmop (right, NULL, ic, TRUE);
+ freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
-/* genFarPointerSet - set value from far space */
+/* genNearPointerSet - emitcode for near pointer put */
/*-----------------------------------------------------------------*/
static void
-genFarPointerSet (operand * right,
- operand * result, iCode * ic)
+genMemPointerSet (operand * right, operand * result, iCode * ic, iCode *pi)
{
- int size, offset;
- sym_link *retype = getSpec (operandType (right));
-
- 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));
- else
- { /* we need to get it byte by byte */
- emitcode ("mov", "dpl,%s", aopGet (AOP (result), 0));
- emitcode ("mov", "dph,%s", aopGet (AOP (result), 1));
- if (options.model == MODEL_FLAT24)
- {
- emitcode ("mov", "dpx,%s", aopGet (AOP (result), 2));
- }
- }
- }
- /* so dptr know contains the address */
- freeAsmop (result, NULL, ic, TRUE);
- aopOp (right, ic, FALSE);
-
- /* if bit then unpack */
- if (IS_BITVAR (retype))
- genPackBits (retype, right, "dptr", FPOINTER);
- else
- {
- size = AOP_SIZE (right);
- offset = 0;
-
- while (size--)
- {
- char *l = aopGet (AOP (right), offset++);
- MOVA (l);
- emitcode ("movx", "@dptr,a");
- if (size)
- emitcode ("inc", "dptr");
- }
- }
-
- freeAsmop (right, NULL, ic, TRUE);
+ asmop *aop = NULL;
+ char *frname = NULL, *rname, *l;
+ int gotFreePtr = 0;
+ sym_link *retype;
+ sym_link *ptype = operandType (result);
+
+ retype = getSpec (operandType (right));
+
+ aopOp (result, ic, FALSE);
+
+ /* if the result is rematerializable &
+ in data space & not a bit variable */
+ if (AOP_TYPE (result) == AOP_IMMD &&
+ DCL_TYPE (ptype) == POINTER && !IS_BITVAR (retype)) {
+ genDataPointerSet (right, result, ic);
+ return;
+ }
+ if (!AOP_INPREG(AOP(result))) {
+ /* otherwise get a free pointer register */
+ aop = newAsmop (0);
+ getFreePtr (ic, &aop, FALSE, 0);
+ if (isRegPair (AOP (result) )) {
+ emitcode ("movw", "%s,%s",aop->aopu.aop_ptr->name,
+ aopGet(AOP (result), 0));
+ } else {
+ emitcode ("mov", "%s,%s", aop->aopu.aop_ptr->name,
+ aopGet (AOP (result), 0));
+ emitcode ("mov", "%s,%s", aop->aop_ptr2->name,
+ aopGet (AOP (result), 1));
+ }
+ gotFreePtr = 1;
+ } else {
+ aop = AOP(result);
+ frname = aopGet(aop,0);
+ }
+
+ aopOp (right, ic, FALSE);
+ if (AOP_ISX(aop)) {
+ rname = "X";
+ } else if (AOP_ISZ(aop)) {
+ rname = "Z";
+ } else {
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "pointer not in correct register");
+ exit (0);
+ }
+ /* if bitfield then unpack the bits */
+ if (IS_BITVAR (retype))
+ genPackBits (retype, right, rname, POINTER);
+ else {
+ /* we have can just get the values */
+ int size = AOP_SIZE (right);
+ int offset = 0;
+
+ while (size--) {
+ l = aopGet (AOP (right), offset);
+ if (size || pi)
+ emitcode ("st", "%s+,%s", rname,l);
+ else
+ emitcode ("st", "%s,%s", rname,l);
+ offset++;
+ }
+ }
+
+ /* now some housekeeping stuff */
+ if (gotFreePtr) {
+ /* we had to allocate for this iCode */
+ if (pi) {
+ if (isRegPair (AOP (result) )) {
+ emitcode ("movw", "%s,%s",
+ aopGet(AOP(result),0),
+ aop->aopu.aop_ptr->name);
+ } else {
+ emitcode ("mov", "%s,%s", aop->aopu.aop_ptr->name,
+ aopGet (AOP (result), 0));
+ emitcode ("mov", "%s,%s", aop->aop_ptr2->name,
+ aopGet (AOP (result), 1));
+ }
+ }
+ freeAsmop (NULL, aop, ic, TRUE);
+ } else {
+
+ /* we did not allocate which means left
+ already in a pointer register, then
+ if size > 0 && this could be used again
+ we have to point it back to where it
+ belongs */
+ if ((AOP_SIZE (right) > 1 &&
+ !OP_SYMBOL (result)->remat &&
+ (OP_SYMBOL (right)->liveTo > ic->seq || ic->depth)) && !pi) {
+ int size = AOP_SIZE (right) - 1;
+ emitcode ("sbiw", "%s,%d",frname,size);
+ }
+ }
+
+ /* done */
+ if (pi) pi->generated = 1;
+ freeAsmop (result, NULL, ic, TRUE);
+ freeAsmop (right, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
/* genGenPointerSet - set value from generic pointer space */
/*-----------------------------------------------------------------*/
static void
-genGenPointerSet (operand * right,
- operand * result, iCode * ic)
+genGenPointerSet (operand * right, operand * result, iCode * ic, iCode *pi)
{
- int size, offset;
- sym_link *retype = getSpec (operandType (right));
-
- 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));
- emitcode ("mov", "b,%s + 1", aopGet (AOP (result), 0));
- }
- else
- { /* we need to get it byte by byte */
- emitcode ("mov", "dpl,%s", aopGet (AOP (result), 0));
- emitcode ("mov", "dph,%s", aopGet (AOP (result), 1));
- if (options.model == MODEL_FLAT24)
- {
- emitcode ("mov", "dpx,%s", aopGet (AOP (result), 2));
- emitcode ("mov", "b,%s", aopGet (AOP (result), 3));
- }
- else
- {
- emitcode ("mov", "b,%s", aopGet (AOP (result), 2));
- }
- }
- }
- /* so dptr know contains the address */
- freeAsmop (result, NULL, ic, TRUE);
- aopOp (right, ic, FALSE);
-
- /* if bit then unpack */
- if (IS_BITVAR (retype))
- genPackBits (retype, right, "dptr", GPOINTER);
- else
- {
- size = AOP_SIZE (right);
- offset = 0;
-
- while (size--)
- {
- char *l = aopGet (AOP (right), offset++);
- MOVA (l);
- emitcode ("lcall", "__gptrput");
- if (size)
- emitcode ("inc", "dptr");
- }
- }
-
- freeAsmop (right, NULL, ic, TRUE);
+ int size, offset;
+ int gotFreePtr = 0;
+ sym_link *retype = getSpec (operandType (right));
+ asmop *aop = NULL;
+
+ aopOp (result, ic, FALSE);
+
+ /* if the operand is already in dptr
+ then we do nothing else we move the value to dptr */
+ if (AOP_ISZ(AOP(result))) {
+ aop = AOP(right);
+ } else {
+ aop = newAsmop(0);
+ getFreePtr(ic,&aop,FALSE,TRUE);
+ if (isRegPair(AOP(result))) {
+ emitcode ("movw", "r30,%s", aopGet (AOP (result), 0));
+ } else {
+ emitcode ("mov", "r30,%s", aopGet (AOP (result), 0));
+ emitcode ("mov", "r31,%s", aopGet (AOP (result), 1));
+ }
+ emitcode ("mov", "r24,%s", aopGet (AOP (result), 2));
+ gotFreePtr=1;
+ }
+
+ /* so Z register now contains the address */
+ aopOp (right, ic, FALSE);
+
+ /* if bit then unpack */
+ if (IS_BITVAR (retype))
+ genUnpackBits (result, "Z", GPOINTER);
+ else {
+ size = AOP_SIZE (right);
+ offset = 0;
+
+ while (size--) {
+ char *l = aopGet(AOP (right), offset++);
+ MOVR0(l);
+
+ if (size || pi)
+ emitcode ("call", "__gptrput_pi");
+ else
+ emitcode ("call", "__gptrput");
+ }
+ }
+
+ /* now some housekeeping stuff */
+ if (gotFreePtr) {
+ /* we had to allocate for this iCode */
+ if (pi) {
+ if (isRegPair(AOP(result))) {
+ emitcode ("movw", "%s,r30", aopGet (AOP (result), 0));
+ } else {
+ emitcode ("mov", "%s,r30", aopGet (AOP (result), 0));
+ emitcode ("mov", "%s,r31", aopGet (AOP (result), 1));
+ }
+ }
+ freeAsmop (NULL, aop, ic, TRUE);
+ } else {
+
+ /* we did not allocate which means left
+ already in a pointer register, then
+ if size > 0 && this could be used again
+ we have to point it back to where it
+ belongs */
+ if ((AOP_SIZE (right) > 1 &&
+ !OP_SYMBOL (result)->remat &&
+ (OP_SYMBOL (result)->liveTo > ic->seq || ic->depth)) && !pi) {
+ int size = AOP_SIZE (right) - 1;
+ emitcode ("sbiw", "r30,%d",size);
+ }
+ }
+ if (pi) pi->generated = 1;
+ freeAsmop (right, NULL, ic, TRUE);
+ freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
/* genPointerSet - stores the value into a pointer location */
/*-----------------------------------------------------------------*/
static void
-genPointerSet (iCode * ic)
+genPointerSet (iCode * ic, iCode *pi)
{
- operand *right, *result;
- sym_link *type, *etype;
- int p_type;
-
- right = IC_RIGHT (ic);
- result = IC_RESULT (ic);
-
- /* depending on the type of pointer we need to
- move it to the correct pointer register */
- type = operandType (result);
- etype = getSpec (type);
- /* if left is of type of pointer then it is simple */
- if (IS_PTR (type) && !IS_FUNC (type->next))
- {
- p_type = DCL_TYPE (type);
- }
- else
- {
- /* we have to go by the storage class */
- p_type = PTR_TYPE (SPEC_OCLS (etype));
-
- /* if (SPEC_OCLS(etype)->codesp ) { */
- /* p_type = CPOINTER ; */
- /* } */
- /* else */
- /* if (SPEC_OCLS(etype)->fmap && !SPEC_OCLS(etype)->paged) */
- /* p_type = FPOINTER ; */
- /* else */
- /* if (SPEC_OCLS(etype)->fmap && SPEC_OCLS(etype)->paged) */
- /* p_type = PPOINTER ; */
- /* else */
- /* if (SPEC_OCLS(etype) == idata ) */
- /* p_type = IPOINTER ; */
- /* else */
- /* p_type = POINTER ; */
- }
-
- /* now that we have the pointer type we assign
- the pointer values */
- switch (p_type)
- {
-
- case POINTER:
- case IPOINTER:
- genNearPointerSet (right, result, ic);
- break;
-
- case PPOINTER:
- genPagedPointerSet (right, result, ic);
- break;
-
- case FPOINTER:
- genFarPointerSet (right, result, ic);
- break;
-
- case GPOINTER:
- genGenPointerSet (right, result, ic);
- break;
- }
+ operand *right, *result;
+ sym_link *type, *etype;
+ int p_type;
+
+ right = IC_RIGHT (ic);
+ result = IC_RESULT (ic);
+
+ /* depending on the type of pointer we need to
+ move it to the correct pointer register */
+ type = operandType (result);
+ etype = getSpec (type);
+ /* if left is of type of pointer then it is simple */
+ if (IS_PTR (type) && !IS_FUNC (type->next)) {
+ p_type = DCL_TYPE (type);
+ }
+ else {
+ /* we have to go by the storage class */
+ p_type = PTR_TYPE (SPEC_OCLS (etype));
+
+ }
+
+ /* now that we have the pointer type we assign
+ the pointer values */
+ switch (p_type) {
+
+ case POINTER:
+ case IPOINTER:
+ case PPOINTER:
+ case FPOINTER:
+ genMemPointerSet (right, result, ic, pi);
+ break;
+
+ case GPOINTER:
+ genGenPointerSet (right, result, ic, pi);
+ break;
+
+ default:
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "genPointerSet: illegal pointer type");
+ }
}
static void
genIfx (iCode * ic, iCode * popIc)
{
- operand *cond = IC_COND (ic);
- int isbit = 0;
-
- aopOp (cond, ic, FALSE);
-
- /* get the value into acc */
- if (AOP_TYPE (cond) != AOP_CRY)
- toBoolean (cond, "", 0);
- else
- isbit = 1;
- /* the result is now in the accumulator */
- freeAsmop (cond, NULL, ic, TRUE);
-
- /* if there was something to be popped then do it */
- if (popIc)
- genIpop (popIc);
-
- /* if the condition is a bit variable */
- /* if (isbit && IS_ITEMP(cond) && SPIL_LOC(cond)) { */
- /* // genIfxJump(ic,SPIL_LOC(cond)->rname); */
- /* } */
- /* else */
- /* if (isbit && !IS_ITEMP(cond)) */
- /* // genIfxJump(ic,OP_SYMBOL(cond)->rname); */
- /* else */
- /* // genIfxJump(ic,"a"); */
-
- ic->generated = 1;
+ operand *cond = IC_COND (ic);
+ char *cname ;
+ symbol *lbl;
+ int tob = 0;
+
+ aopOp (cond, ic, FALSE);
+
+ /* get the value into acc */
+ if (AOP_SIZE(cond) == 1 && AOP_ISHIGHREG(AOP(cond),0)) {
+ cname = aopGet(AOP(cond),0);
+ } else {
+ toBoolean (cond, "r24", 0);
+ tob = 1;
+ cname = "r24";
+ }
+ /* the result is now in the accumulator */
+ freeAsmop (cond, NULL, ic, TRUE);
+
+ /* if there was something to be popped then do it */
+ if (popIc) {
+ genIpop (popIc);
+ emitcode("cpi","%s,0",cname);
+ } else if (!tob) emitcode("cpi","%s,0",cname);
+
+ lbl = newiTempLabel(NULL);
+ if (IC_TRUE(ic)) {
+ emitcode ("breq","L%05d",lbl->key);
+ emitcode ("jmp","L%05d",IC_TRUE(ic)->key);
+ emitcode ("","L%05d:",lbl->key);
+ } else {
+ emitcode ("brne","L%05d",lbl->key);
+ emitcode ("jmp","L%05d",IC_FALSE(ic)->key);
+ emitcode ("","L%05d:",lbl->key);
+ }
+ ic->generated = 1;
}
/*-----------------------------------------------------------------*/
static void
genAddrOf (iCode * ic)
{
- symbol *sym = OP_SYMBOL (IC_LEFT (ic));
- int size, offset;
-
- aopOp (IC_RESULT (ic), ic, FALSE);
-
- /* if the operand is on the stack then we
- need to get the stack offset of this
- variable */
- if (sym->onStack)
- {
- /* if it has an offset then we need to compute
- it */
- if (sym->stack)
- {
- emitcode ("mov", "a,_bp");
- emitcode ("add", "a,#0x%02x", ((char) sym->stack & 0xff));
- aopPut (AOP (IC_RESULT (ic)), "a", 0);
- }
- else
- {
- /* we can just move _bp */
- aopPut (AOP (IC_RESULT (ic)), "_bp", 0);
- }
- /* fill the result with zero */
- size = AOP_SIZE (IC_RESULT (ic)) - 1;
-
-
- if (options.stack10bit && size < (FPTRSIZE - 1))
- {
- fprintf (stderr,
- "*** warning: pointer to stack var truncated.\n");
- }
-
- offset = 1;
- while (size--)
- {
- /* Yuck! */
- if (options.stack10bit && offset == 2)
- {
- aopPut (AOP (IC_RESULT (ic)), "#0x40", offset++);
- }
- else
- {
- aopPut (AOP (IC_RESULT (ic)), zero, offset++);
- }
- }
-
- goto release;
- }
-
- /* object not on stack then we need the name */
- size = AOP_SIZE (IC_RESULT (ic));
- offset = 0;
-
- while (size--)
- {
- char s[SDCC_NAME_MAX];
- if (offset)
- sprintf (s, "#(%s >> %d)",
- sym->rname,
- offset * 8);
- else
- sprintf (s, "#%s", sym->rname);
- aopPut (AOP (IC_RESULT (ic)), s, offset++);
- }
-
-release:
- freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ symbol *sym = OP_SYMBOL (IC_LEFT (ic));
+ int size, offset;
+
+ aopOp (IC_RESULT (ic), ic, FALSE);
+ assert(AOP_SIZE(IC_RESULT(ic)) >= 2);
+ /* if the operand is on the stack then we
+ need to get the stack offset of this
+ variable */
+ if (sym->onStack) {
+ /* if it has an offset then we need to compute it */
+ if (sym->stack) {
+ if (allHigh(AOP(IC_RESULT(ic)))) {
+ if (isRegPair (AOP(IC_RESULT(ic)))) {
+ emitcode ("movw","%s,r28",aopGet(AOP(IC_RESULT(ic)),0));
+ } else {
+ emitcode ("mov","%s,r28",aopGet(AOP(IC_RESULT(ic)),0));
+ emitcode ("mov","%s,r29",aopGet(AOP(IC_RESULT(ic)),1));
+ }
+ if (sym->stack < 0) {
+ emitcode("subi","%s,<(%d)",aopGet(AOP(IC_RESULT(ic)),0),-sym->stack);
+ emitcode("sbci","%s,>(%d)",aopGet(AOP(IC_RESULT(ic)),1),-sym->stack);
+ } else {
+ emitcode("subi","%s,<(-%d)",aopGet(AOP(IC_RESULT(ic)),0),sym->stack);
+ emitcode("sbci","%s,>(-%d)",aopGet(AOP(IC_RESULT(ic)),1),sym->stack);
+ }
+ } else {
+ emitcode("movw","r24,r28");
+ if (sym->stack > -63 && sym->stack < 63) {
+ if (sym->stack < 0)
+ emitcode("sbiw","r24,%d",-sym->stack);
+ else
+ emitcode("sbiw","r24,%d",sym->stack);
+ } else {
+ if (sym->stack < 0) {
+ emitcode("subi","r24,<(%d)",-sym->stack);
+ emitcode("sbci","r25,>(%d)",-sym->stack);
+ } else {
+ emitcode("subi","r24,<(-%d)",sym->stack);
+ emitcode("sbci","r25,>(-%d)",sym->stack);
+ }
+ }
+
+ aopPut(AOP(IC_RESULT(ic)),"r24",0);
+ aopPut(AOP(IC_RESULT(ic)),"r25",1);
+ }
+ }
+ else {
+ aopPut(AOP(IC_RESULT(ic)),"r28",0);
+ aopPut(AOP(IC_RESULT(ic)),"r29",1);
+ }
+ /* fill the result with zero */
+ size = AOP_SIZE (IC_RESULT (ic)) - 2;
+ offset = 2;
+ while (size--) {
+ aopPut (AOP (IC_RESULT (ic)), zero, offset++);
+ }
+
+ goto release;
+ }
+
+ /* object not on stack then we need the name */
+ size = AOP_SIZE (IC_RESULT (ic));
+ offset = 0;
+ assert(size<=2);
+ while (size--) {
+ char s[SDCC_NAME_MAX];
+ if (offset)
+ sprintf (s, ">(%s)", sym->rname);
+ else
+ sprintf (s, "<(%s)", sym->rname);
+ aopPut (AOP (IC_RESULT (ic)), s, offset++);
+ }
+
+ release:
+ freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
}
static void
genFarFarAssign (operand * result, operand * right, iCode * ic)
{
- int size = AOP_SIZE (right);
- int offset = 0;
- char *l;
- /* first push the right side on to the stack */
- while (size--)
- {
- l = aopGet (AOP (right), offset++);
- MOVA (l);
- emitcode ("push", "acc");
- }
-
- freeAsmop (right, NULL, ic, FALSE);
- /* now assign DPTR to result */
- aopOp (result, ic, FALSE);
- size = AOP_SIZE (result);
- while (size--)
- {
- emitcode ("pop", "acc");
- aopPut (AOP (result), "a", --offset);
- }
- freeAsmop (result, NULL, ic, FALSE);
+ int size = AOP_SIZE (right);
+ int offset = 0;
+ char *l;
+ /* first push the right side on to the stack */
+ while (size--) {
+ l = aopGet (AOP (right), offset++);
+ MOVA (l);
+ emitcode ("push", "acc");
+ }
+
+ freeAsmop (right, NULL, ic, FALSE);
+ /* now assign DPTR to result */
+ aopOp (result, ic, FALSE);
+ size = AOP_SIZE (result);
+ while (size--) {
+ emitcode ("pop", "acc");
+ aopPut (AOP (result), "a", --offset);
+ }
+ freeAsmop (result, NULL, ic, FALSE);
}
static void
genAssign (iCode * ic)
{
- operand *result, *right;
- int size, offset;
- unsigned long lit = 0L;
-
- result = IC_RESULT (ic);
- right = IC_RIGHT (ic);
-
- /* if they are the same */
- if (operandsEqu (IC_RESULT (ic), IC_RIGHT (ic)))
- return;
-
- aopOp (right, ic, FALSE);
-
- /* special case both in far space */
- if (AOP_TYPE (right) == AOP_DPTR &&
- IS_TRUE_SYMOP (result) &&
- isOperandInFarSpace (result))
- {
-
- genFarFarAssign (result, right, ic);
- return;
- }
-
- aopOp (result, ic, TRUE);
-
- /* if they are the same registers */
- if (sameRegs (AOP (right), AOP (result)))
- goto release;
-
- /* if the result is a bit */
- if (AOP_TYPE (result) == AOP_CRY)
- {
-
- /* if the right size is a literal then
- we know what the value is */
- if (AOP_TYPE (right) == AOP_LIT)
- {
- if (((int) operandLitValue (right)))
- aopPut (AOP (result), one, 0);
- else
- aopPut (AOP (result), zero, 0);
- goto release;
- }
-
- /* the right is also a bit variable */
- if (AOP_TYPE (right) == AOP_CRY)
- {
- emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
- aopPut (AOP (result), "c", 0);
- goto release;
- }
-
- /* we need to or */
- toBoolean (right, "", 0);
- aopPut (AOP (result), "a", 0);
- goto release;
- }
-
- /* bit variables done */
- /* general case */
- size = AOP_SIZE (result);
- offset = 0;
- if (AOP_TYPE (right) == AOP_LIT)
- lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit);
- if ((size > 1) &&
- (AOP_TYPE (result) != AOP_REG) &&
- (AOP_TYPE (right) == AOP_LIT) &&
- !IS_FLOAT (operandType (right)) &&
- (lit < 256L))
- {
- emitcode ("clr", "a");
- while (size--)
- {
- if ((unsigned int) ((lit >> (size * 8)) & 0x0FFL) == 0)
- aopPut (AOP (result), "a", size);
- else
- aopPut (AOP (result),
- aopGet (AOP (right), size),
- size);
- }
- }
- else
- {
- while (size--)
- {
- aopPut (AOP (result),
- aopGet (AOP (right), offset),
- offset);
- offset++;
- }
- }
-
-release:
- freeAsmop (right, NULL, ic, FALSE);
- freeAsmop (result, NULL, ic, TRUE);
+ operand *result, *right;
+ int size, offset;
+ unsigned long lit = 0L;
+
+ result = IC_RESULT (ic);
+ right = IC_RIGHT (ic);
+
+ /* if they are the same */
+ if (operandsEqu (IC_RESULT (ic), IC_RIGHT (ic)))
+ return;
+
+ aopOp (right, ic, FALSE);
+
+ /* special case both in far space */
+ if (AOP_TYPE (right) == AOP_DPTR &&
+ IS_TRUE_SYMOP (result) && isOperandInFarSpace (result)) {
+
+ genFarFarAssign (result, right, ic);
+ return;
+ }
+
+ aopOp (result, ic, TRUE);
+
+ /* if they are the same registers */
+ if (sameRegs (AOP (right), AOP (result)))
+ goto release;
+
+ /* if the result is a bit */
+ if (AOP_TYPE (result) == AOP_CRY) {
+
+ /* if the right size is a literal then
+ we know what the value is */
+ if (AOP_TYPE (right) == AOP_LIT) {
+ if (((int) operandLitValue (right)))
+ aopPut (AOP (result), one, 0);
+ else
+ aopPut (AOP (result), zero, 0);
+ goto release;
+ }
+
+ /* the right is also a bit variable */
+ if (AOP_TYPE (right) == AOP_CRY) {
+ emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
+ aopPut (AOP (result), "c", 0);
+ goto release;
+ }
+
+ /* we need to or */
+ toBoolean (right, "", 0);
+ aopPut (AOP (result), "a", 0);
+ goto release;
+ }
+
+ /* bit variables done */
+ /* general case */
+ size = AOP_SIZE (result);
+ offset = 0;
+ if (AOP_TYPE (right) == AOP_LIT)
+ lit =
+ (unsigned long) floatFromVal (AOP (right)->aopu.
+ aop_lit);
+ if ((size > 1) && (AOP_TYPE (result) != AOP_REG)
+ && (AOP_TYPE (right) == AOP_LIT)
+ && !IS_FLOAT (operandType (right)) && (lit < 256L)) {
+ emitcode ("clr", "a");
+ while (size--) {
+ if ((unsigned int) ((lit >> (size * 8)) & 0x0FFL) ==
+ 0) aopPut (AOP (result), "a", size);
+ else
+ aopPut (AOP (result),
+ aopGet (AOP (right), size), size);
+ }
+ }
+ else {
+ while (size--) {
+ aopPut (AOP (result),
+ aopGet (AOP (right), offset), offset);
+ offset++;
+ }
+ }
+
+ release:
+ freeAsmop (right, NULL, ic, FALSE);
+ freeAsmop (result, NULL, ic, TRUE);
}
/*-----------------------------------------------------------------*/
static void
genJumpTab (iCode * ic)
{
- symbol *jtab;
- char *l;
-
- aopOp (IC_JTCOND (ic), ic, FALSE);
- /* get the condition into accumulator */
- l = aopGet (AOP (IC_JTCOND (ic)), 0);
- MOVA (l);
- /* multiply by three */
- emitcode ("add", "a,acc");
- emitcode ("add", "a,%s", aopGet (AOP (IC_JTCOND (ic)), 0));
- freeAsmop (IC_JTCOND (ic), NULL, ic, TRUE);
-
- jtab = newiTempLabel (NULL);
- emitcode ("mov", "dptr,#%05d$", jtab->key + 100);
- emitcode ("jmp", "@a+dptr");
- emitcode ("", "%05d$:", jtab->key + 100);
- /* now generate the jump labels */
- for (jtab = setFirstItem (IC_JTLABELS (ic)); jtab;
- jtab = setNextItem (IC_JTLABELS (ic)))
- emitcode ("ljmp", "%05d$", jtab->key + 100);
+ symbol *jtab;
+ char *l;
+
+ aopOp (IC_JTCOND (ic), ic, FALSE);
+ /* get the condition into accumulator */
+ l = aopGet (AOP (IC_JTCOND (ic)), 0);
+ MOVA (l);
+ /* multiply by three */
+ emitcode ("add", "a,acc");
+ emitcode ("add", "a,%s", aopGet (AOP (IC_JTCOND (ic)), 0));
+ freeAsmop (IC_JTCOND (ic), NULL, ic, TRUE);
+
+ jtab = newiTempLabel (NULL);
+ emitcode ("mov", "dptr,#%05d$", jtab->key + 100);
+ emitcode ("jmp", "@a+dptr");
+ emitcode ("", "%05d$:", jtab->key + 100);
+ /* now generate the jump labels */
+ for (jtab = setFirstItem (IC_JTLABELS (ic)); jtab;
+ jtab = setNextItem (IC_JTLABELS (ic)))
+ emitcode ("ljmp", "%05d$", jtab->key + 100);
}
static void
genCast (iCode * ic)
{
- operand *result = IC_RESULT (ic);
- sym_link *ctype = operandType (IC_LEFT (ic));
- sym_link *rtype = operandType (IC_RIGHT (ic));
- operand *right = IC_RIGHT (ic);
- int size, offset;
-
- /* if they are equivalent then do nothing */
- if (operandsEqu (IC_RESULT (ic), IC_RIGHT (ic)))
- return;
-
- aopOp (right, ic, FALSE);
- aopOp (result, ic, FALSE);
-
- /* if the result is a bit */
- if (AOP_TYPE (result) == AOP_CRY)
- {
- /* if the right size is a literal then
- we know what the value is */
- if (AOP_TYPE (right) == AOP_LIT)
- {
- if (((int) operandLitValue (right)))
- aopPut (AOP (result), one, 0);
- else
- aopPut (AOP (result), zero, 0);
-
- goto release;
- }
-
- /* the right is also a bit variable */
- if (AOP_TYPE (right) == AOP_CRY)
- {
- emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
- aopPut (AOP (result), "c", 0);
- goto release;
- }
-
- /* we need to or */
- toBoolean (right, "", 0);
- aopPut (AOP (result), "a", 0);
- goto release;
- }
-
- /* if they are the same size : or less */
- if (AOP_SIZE (result) <= AOP_SIZE (right))
- {
-
- /* if they are in the same place */
- if (sameRegs (AOP (right), AOP (result)))
- goto release;
-
- /* if they in different places then copy */
- size = AOP_SIZE (result);
- offset = 0;
- while (size--)
- {
- aopPut (AOP (result),
- aopGet (AOP (right), offset),
- offset);
- offset++;
- }
- goto release;
- }
-
-
- /* if the result is of type pointer */
- if (IS_PTR (ctype))
- {
-
- int p_type;
- sym_link *type = operandType (right);
- sym_link *etype = getSpec (type);
-
- /* pointer to generic pointer */
- if (IS_GENPTR (ctype))
- {
- char *l = zero;
-
- if (IS_PTR (type))
- p_type = DCL_TYPE (type);
- else
- {
- /* we have to go by the storage class */
- p_type = PTR_TYPE (SPEC_OCLS (etype));
- }
-
- /* the first two bytes are known */
- size = GPTRSIZE - 1;
- offset = 0;
- while (size--)
- {
- aopPut (AOP (result),
- aopGet (AOP (right), offset),
- offset);
- 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 PPOINTER:
- 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);
- goto release;
- }
-
- /* just copy the pointers */
- size = AOP_SIZE (result);
- offset = 0;
- while (size--)
- {
- aopPut (AOP (result),
- aopGet (AOP (right), offset),
- offset);
- offset++;
- }
- goto release;
- }
-
- /* so we now know that the size of destination is greater
- than the size of the source */
- /* we move to result for the size of source */
- size = AOP_SIZE (right);
- offset = 0;
- while (size--)
- {
- aopPut (AOP (result),
- aopGet (AOP (right), offset),
- offset);
- 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))
- {
- while (size--)
- aopPut (AOP (result), zero, offset++);
- }
- else
- {
- /* we need to extend the sign :{ */
- char *l = aopGet (AOP (right), AOP_SIZE (right) - 1);
- MOVA (l);
- emitcode ("rlc", "a");
- emitcode ("subb", "a,acc");
- while (size--)
- aopPut (AOP (result), "a", offset++);
- }
-
- /* we are done hurray !!!! */
-
-release:
- freeAsmop (right, NULL, ic, TRUE);
- freeAsmop (result, NULL, ic, TRUE);
+ operand *result = IC_RESULT (ic);
+ sym_link *ctype = operandType (IC_LEFT (ic));
+ sym_link *rtype = operandType (IC_RIGHT (ic));
+ operand *right = IC_RIGHT (ic);
+ int size, offset;
+
+ /* if they are equivalent then do nothing */
+ if (operandsEqu (IC_RESULT (ic), IC_RIGHT (ic)))
+ return;
+
+ aopOp (right, ic, FALSE);
+ aopOp (result, ic, FALSE);
+
+ /* if the result is a bit */
+ if (AOP_TYPE (result) == AOP_CRY) {
+ /* if the right size is a literal then
+ we know what the value is */
+ if (AOP_TYPE (right) == AOP_LIT) {
+ if (((int) operandLitValue (right)))
+ aopPut (AOP (result), one, 0);
+ else
+ aopPut (AOP (result), zero, 0);
+
+ goto release;
+ }
+
+ /* the right is also a bit variable */
+ if (AOP_TYPE (right) == AOP_CRY) {
+ emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
+ aopPut (AOP (result), "c", 0);
+ goto release;
+ }
+
+ /* we need to or */
+ toBoolean (right, "", 0);
+ aopPut (AOP (result), "a", 0);
+ goto release;
+ }
+
+ /* if they are the same size : or less */
+ if (AOP_SIZE (result) <= AOP_SIZE (right)) {
+
+ /* if they are in the same place */
+ if (sameRegs (AOP (right), AOP (result)))
+ goto release;
+
+ /* if they in different places then copy */
+ size = AOP_SIZE (result);
+ offset = 0;
+ while (size--) {
+ aopPut (AOP (result),
+ aopGet (AOP (right), offset), offset);
+ offset++;
+ }
+ goto release;
+ }
+
+
+ /* if the result is of type pointer */
+ if (IS_PTR (ctype)) {
+
+ int p_type;
+ sym_link *type = operandType (right);
+ sym_link *etype = getSpec (type);
+
+ /* pointer to generic pointer */
+ if (IS_GENPTR (ctype)) {
+ if (IS_PTR (type))
+ p_type = DCL_TYPE (type);
+ else {
+ /* we have to go by the storage class */
+ p_type = PTR_TYPE (SPEC_OCLS (etype));
+ }
+
+ /* the first two bytes are known */
+ size = GPTRSIZE - 1;
+ offset = 0;
+ while (size--) {
+ aopPut (AOP (result),
+ aopGet (AOP (right), offset), offset);
+ offset++;
+ }
+
+ /* the last byte depending on type */
+ {
+ int gpVal = pointerTypeToGPByte(p_type, NULL, NULL);
+ char gpValStr[10];
+
+ if (gpVal == -1)
+ {
+ // pointerTypeToGPByte will have bitched.
+ exit(1);
+ }
+
+ sprintf(gpValStr, "#0x%x", gpVal);
+ aopPut (AOP (result), gpValStr, GPTRSIZE - 1);
+ }
+ goto release;
+ }
+
+ /* just copy the pointers */
+ size = AOP_SIZE (result);
+ offset = 0;
+ while (size--) {
+ aopPut (AOP (result),
+ aopGet (AOP (right), offset), offset);
+ offset++;
+ }
+ goto release;
+ }
+
+ /* so we now know that the size of destination is greater
+ than the size of the source */
+ /* we move to result for the size of source */
+ size = AOP_SIZE (right);
+ offset = 0;
+ while (size--) {
+ aopPut (AOP (result), aopGet (AOP (right), offset), offset);
+ 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)) {
+ while (size--)
+ aopPut (AOP (result), zero, offset++);
+ }
+ else {
+ /* we need to extend the sign :{ */
+ // PENDING: Does nothing on avr
+#if 0
+ char *l = aopGet (AOP (right), AOP_SIZE (right) - 1);
+ MOVA (l);
+#endif
+ emitcode ("rlc", "a");
+ emitcode ("subb", "a,acc");
+ while (size--)
+ aopPut (AOP (result), "a", offset++);
+ }
+
+ /* we are done hurray !!!! */
+
+ release:
+ freeAsmop (right, NULL, ic, TRUE);
+ freeAsmop (result, NULL, ic, TRUE);
}
static int
genDjnz (iCode * ic, iCode * ifx)
{
- symbol *lbl, *lbl1;
- if (!ifx)
- return 0;
-
- /* if the if condition has a false label
- then we cannot save */
- if (IC_FALSE (ifx))
- return 0;
-
- /* if the minus is not of the form
- a = a - 1 */
- if (!isOperandEqual (IC_RESULT (ic), IC_LEFT (ic)) ||
- !IS_OP_LITERAL (IC_RIGHT (ic)))
- return 0;
-
- if (operandLitValue (IC_RIGHT (ic)) != 1)
- return 0;
-
- /* if the size of this greater than one then no
- saving */
- if (getSize (operandType (IC_RESULT (ic))) > 1)
- return 0;
-
- /* otherwise we can save BIG */
- lbl = newiTempLabel (NULL);
- lbl1 = newiTempLabel (NULL);
-
- aopOp (IC_RESULT (ic), ic, FALSE);
-
- if (IS_AOP_PREG (IC_RESULT (ic)))
- {
- emitcode ("dec", "%s",
- aopGet (AOP (IC_RESULT (ic)), 0));
- emitcode ("mov", "a,%s", aopGet (AOP (IC_RESULT (ic)), 0));
- emitcode ("jnz", "%05d$", lbl->key + 100);
- }
- else
- {
- emitcode ("djnz", "%s,%05d$", aopGet (AOP (IC_RESULT (ic)), 0),
- lbl->key + 100);
- }
- emitcode ("sjmp", "%05d$", lbl1->key + 100);
- emitcode ("", "%05d$:", lbl->key + 100);
- emitcode ("ljmp", "%05d$", IC_TRUE (ifx)->key + 100);
- emitcode ("", "%05d$:", lbl1->key + 100);
-
- freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
- ifx->generated = 1;
- return 1;
+ symbol *lbl, *lbl1;
+ if (!ifx)
+ return 0;
+
+ /* if the if condition has a false label
+ then we cannot save */
+ if (IC_FALSE (ifx))
+ return 0;
+
+ /* if the minus is not of the form
+ a = a - 1 */
+ if (!isOperandEqual (IC_RESULT (ic), IC_LEFT (ic)) ||
+ !IS_OP_LITERAL (IC_RIGHT (ic)))
+ return 0;
+
+ if (operandLitValue (IC_RIGHT (ic)) != 1)
+ return 0;
+
+ /* if the size of this greater than one then no
+ saving */
+ if (getSize (operandType (IC_RESULT (ic))) > 1)
+ return 0;
+
+ /* otherwise we can save BIG */
+ lbl = newiTempLabel (NULL);
+ lbl1 = newiTempLabel (NULL);
+
+ aopOp (IC_RESULT (ic), ic, FALSE);
+
+ if (IS_AOP_PREG (IC_RESULT (ic))) {
+ emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), 0));
+ emitcode ("mov", "a,%s", aopGet (AOP (IC_RESULT (ic)), 0));
+ emitcode ("jnz", "%05d$", lbl->key + 100);
+ }
+ else {
+ emitcode ("djnz", "%s,%05d$",
+ aopGet (AOP (IC_RESULT (ic)), 0), lbl->key + 100);
+ }
+ emitcode ("sjmp", "%05d$", lbl1->key + 100);
+ emitcode ("", "%05d$:", lbl->key + 100);
+ emitcode ("ljmp", "%05d$", IC_TRUE (ifx)->key + 100);
+ emitcode ("", "%05d$:", lbl1->key + 100);
+
+ freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ ifx->generated = 1;
+ return 1;
}
-static char *recvregs[8] =
-{
- "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23"
+static char *recvregs[8] = {
+ "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23"
};
-static recvCnt = 0;
+
+static int recvCnt = 0;
/*-----------------------------------------------------------------*/
/* genReceive - generate code for a receive iCode */
static void
genReceive (iCode * ic)
{
- int size, offset = 0;
- aopOp (IC_RESULT (ic), ic, FALSE);
- size = AOP_SIZE (IC_RESULT (ic));
- while (size--)
- {
- aopPut (AOP (IC_RESULT (ic)), recvregs[recvCnt++], offset);
- offset++;
- }
- freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+ int size, offset = 0;
+ aopOp (IC_RESULT (ic), ic, FALSE);
+ size = AOP_SIZE (IC_RESULT (ic));
+ while (size--) {
+ aopPut (AOP (IC_RESULT (ic)), recvregs[recvCnt++], offset);
+ offset++;
+ }
+ freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
+}
+
+/*-----------------------------------------------------------------*/
+/* genDummyRead - generate code for dummy read of volatiles */
+/*-----------------------------------------------------------------*/
+static void
+genDummyRead (iCode * ic)
+{
+ emitcode ("; genDummyRead","");
+ emitcode ("; not implemented","");
+
+ ic = ic;
}
/*-----------------------------------------------------------------*/
void
genAVRCode (iCode * lic)
{
- iCode *ic;
- int cln = 0;
-
- lineHead = lineCurr = NULL;
- recvCnt = 0;
- /* print the allocation information */
- if (allocInfo)
- printAllocInfo (currFunc, codeOutFile);
- /* if debug information required */
- /* if (options.debug && currFunc) { */
- if (currFunc)
- {
- cdbSymbol (currFunc, cdbFile, FALSE, TRUE);
- _G.debugLine = 1;
- if (IS_STATIC (currFunc->etype))
- emitcode ("", "F%s$%s$0$0 ==.", moduleName, currFunc->name);
- else
- emitcode ("", "G$%s$0$0 ==.", currFunc->name);
- _G.debugLine = 0;
- }
- /* stack pointer name */
- if (options.useXstack)
- spname = "_spx";
- else
- spname = "sp";
-
-
- for (ic = lic; ic; ic = ic->next)
- {
-
- if (cln != ic->lineno)
- {
- if (options.debug)
- {
- _G.debugLine = 1;
- emitcode ("", "C$%s$%d$%d$%d ==.",
- FileBaseName (ic->filename), ic->lineno,
- ic->level, ic->block);
- _G.debugLine = 0;
- }
- emitcode (";", "%s %d", ic->filename, ic->lineno);
- cln = ic->lineno;
- }
- /* if the result is marked as
- spilt and rematerializable or code for
- this has already been generated then
- do nothing */
- if (resultRemat (ic) || ic->generated)
- continue;
-
- /* depending on the operation */
- switch (ic->op)
- {
- case '!':
- genNot (ic);
- break;
-
- case '~':
- genCpl (ic);
- break;
-
- case UNARYMINUS:
- genUminus (ic);
- break;
-
- case IPUSH:
- genIpush (ic);
- break;
-
- case IPOP:
- /* IPOP happens only when trying to restore a
- spilt live range, if there is an ifx statement
- following this pop then the if statement might
- be using some of the registers being popped which
- would destory the contents of the register so
- we need to check for this condition and handle it */
- if (ic->next &&
- ic->next->op == IFX &&
- regsInCommon (IC_LEFT (ic), IC_COND (ic->next)))
- genIfx (ic->next, ic);
- else
- genIpop (ic);
- break;
-
- case CALL:
- genCall (ic);
- break;
-
- case PCALL:
- genPcall (ic);
- break;
-
- case FUNCTION:
- genFunction (ic);
- break;
-
- case ENDFUNCTION:
- genEndFunction (ic);
- break;
-
- case RETURN:
- genRet (ic);
- break;
-
- case LABEL:
- genLabel (ic);
- break;
-
- case GOTO:
- genGoto (ic);
- break;
-
- case '+':
- genPlus (ic);
- break;
-
- case '-':
- if (!genDjnz (ic, ifxForOp (IC_RESULT (ic), ic)))
- genMinus (ic);
- break;
-
- case '*':
- genMult (ic);
- break;
-
- case '/':
- genDiv (ic);
- break;
-
- case '%':
- genMod (ic);
- break;
-
- case '>':
- genCmpGt (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case '<':
- genCmpLt (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case LE_OP:
- genCmpLe (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case GE_OP:
- genCmpGe (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case NE_OP:
- genCmpNe (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case EQ_OP:
- genCmpEq (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case AND_OP:
- genAndOp (ic);
- break;
-
- case OR_OP:
- genOrOp (ic);
- break;
-
- case '^':
- genXor (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case '|':
- genOr (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case BITWISEAND:
- genAnd (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case INLINEASM:
- genInline (ic);
- break;
-
- case RRC:
- genRRC (ic);
- break;
-
- case RLC:
- genRLC (ic);
- break;
-
- case GETHBIT:
- genGetHbit (ic);
- break;
-
- case LEFT_OP:
- genLeftShift (ic);
- break;
-
- case RIGHT_OP:
- genRightShift (ic);
- break;
-
- case GET_VALUE_AT_ADDRESS:
- genPointerGet (ic);
- break;
-
- case '=':
- if (POINTER_SET (ic))
- genPointerSet (ic);
- else
- genAssign (ic);
- break;
+ iCode *ic;
+ int cln = 0;
+
+ lineHead = lineCurr = NULL;
+ recvCnt = 0;
+ /* print the allocation information */
+ if (allocInfo)
+ printAllocInfo (currFunc, codeOutFile);
+ /* if debug information required */
+ if (options.debug && currFunc) {
+ debugFile->writeFunction (currFunc, lic);
+ }
+ /* stack pointer name */
+ spname = "sp";
- case IFX:
- genIfx (ic, NULL);
- break;
- case ADDRESS_OF:
- genAddrOf (ic);
- break;
+ for (ic = lic; ic; ic = ic->next) {
- case JUMPTABLE:
- genJumpTab (ic);
- break;
+ if (cln != ic->lineno) {
+ if (options.debug) {
+ debugFile->writeCLine (ic);
+ }
+ emitcode (";", "%s %d", ic->filename, ic->lineno);
+ cln = ic->lineno;
+ }
+ /* if the result is marked as
+ spilt and rematerializable or code for
+ this has already been generated then
+ do nothing */
+ if (resultRemat (ic) || ic->generated)
+ continue;
+
+ /* depending on the operation */
+ switch (ic->op) {
+ case '!':
+ genNot (ic);
+ break;
+
+ case '~':
+ genCpl (ic);
+ break;
+
+ case UNARYMINUS:
+ genUminus (ic);
+ break;
+
+ case IPUSH:
+ genIpush (ic);
+ break;
+
+ case IPOP:
+ /* IPOP happens only when trying to restore a
+ spilt live range, if there is an ifx statement
+ following this pop then the if statement might
+ be using some of the registers being popped which
+ would destory the contents of the register so
+ we need to check for this condition and handle it */
+ if (ic->next &&
+ ic->next->op == IFX &&
+ regsInCommon (IC_LEFT (ic), IC_COND (ic->next)))
+ genIfx (ic->next, ic);
+ else
+ genIpop (ic);
+ break;
+
+ case CALL:
+ genCall (ic);
+ break;
+
+ case PCALL:
+ genPcall (ic);
+ break;
+
+ case FUNCTION:
+ genFunction (ic);
+ break;
+
+ case ENDFUNCTION:
+ genEndFunction (ic);
+ break;
+
+ case RETURN:
+ genRet (ic);
+ break;
+
+ case LABEL:
+ genLabel (ic);
+ break;
+
+ case GOTO:
+ genGoto (ic);
+ break;
+
+ case '+':
+ genPlus (ic);
+ break;
+
+ case '-':
+ if (!genDjnz (ic, ifxForOp (IC_RESULT (ic), ic)))
+ genMinus (ic);
+ break;
+
+ case '*':
+ genMult (ic);
+ break;
+
+ case '/':
+ genDiv (ic);
+ break;
+
+ case '%':
+ genMod (ic);
+ break;
+
+ case '>':
+ genCmpGt (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case '<':
+ genCmpLt (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case LE_OP:
+ genCmpLe (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case GE_OP:
+ genCmpGe (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case NE_OP:
+ genCmpNe (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case EQ_OP:
+ genCmpEq (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case AND_OP:
+ genAndOp (ic);
+ break;
+
+ case OR_OP:
+ genOrOp (ic);
+ break;
+
+ case '^':
+ genXor (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case '|':
+ genOr (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case BITWISEAND:
+ genAnd (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case INLINEASM:
+ genInline (ic);
+ break;
+
+ case RRC:
+ genRRC (ic);
+ break;
+
+ case RLC:
+ genRLC (ic);
+ break;
+
+ case GETHBIT:
+ genGetHbit (ic);
+ break;
+
+ case LEFT_OP:
+ genLeftShift (ic);
+ break;
+
+ case RIGHT_OP:
+ genRightShift (ic);
+ break;
+
+ case GET_VALUE_AT_ADDRESS:
+ genPointerGet (ic, hasInc(IC_LEFT(ic),ic));
+ break;
+
+ case '=':
+ if (POINTER_SET (ic))
+ genPointerSet (ic, hasInc(IC_RESULT(ic),ic));
+ else
+ genAssign (ic);
+ break;
- case CAST:
- genCast (ic);
- break;
+ case IFX:
+ genIfx (ic, NULL);
+ break;
- case RECEIVE:
- genReceive (ic);
- break;
+ case ADDRESS_OF:
+ genAddrOf (ic);
+ break;
- case SEND:
- addSet (&_G.sendSet, ic);
- break;
+ case JUMPTABLE:
+ genJumpTab (ic);
+ break;
- default:
- ic = ic;
- /* piCode(ic,stdout); */
+ case CAST:
+ genCast (ic);
+ break;
+
+ case RECEIVE:
+ genReceive (ic);
+ break;
+ case SEND:
+ addSet (&_G.sendSet, ic);
+ break;
+
+ case DUMMY_READ_VOLATILE:
+ genDummyRead (ic);
+ break;
+
+ default:
+ ic = ic;
+ }
}
- }
- /* now we are ready to call the
- peep hole optimizer */
- if (!options.nopeep)
- peepHole (&lineHead);
+ /* now we are ready to call the
+ peep hole optimizer */
+ if (!options.nopeep)
+ peepHole (&lineHead);
- /* now do the actual printing */
- printLine (lineHead, codeOutFile);
- return;
+ /* now do the actual printing */
+ printLine (lineHead, codeOutFile);
+ return;
}
projects / fw / sdcc / blobdiff