X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fmcs51%2Fgen.c;h=a19a133b921859cddfd02b56f157707a21560b29;hb=6d5732239ca066c1757ae16f69942fd4b320e612;hp=0d8b03c3d8701c85278a1e481ef5663fe92288bc;hpb=c0a4bcb6fbc866967eafb49d93e8c56716247548;p=fw%2Fsdcc diff --git a/src/mcs51/gen.c b/src/mcs51/gen.c index 0d8b03c3..a19a133b 100644 --- a/src/mcs51/gen.c +++ b/src/mcs51/gen.c @@ -38,23 +38,6 @@ #include "SDCCglobl.h" #include "newalloc.h" -#ifdef HAVE_SYS_ISA_DEFS_H -#include -#else -#ifdef HAVE_MACHINE_ENDIAN_H -#include -#else -#ifdef HAVE_ENDIAN_H -#include -#else -#if !defined(__BORLANDC__) && !defined(_MSC_VER) && !defined(__MINGW32__) && !defined(__CYGWIN__) -#warning "Cannot determine ENDIANESS of this machine assuming LITTLE_ENDIAN" -#warning "If you running sdcc on an INTEL 80x86 Platform you are okay" -#endif -#endif -#endif -#endif - #include "common.h" #include "SDCCpeeph.h" #include "ralloc.h" @@ -74,22 +57,26 @@ static char *spname; char *fReturn8051[] = {"dpl", "dph", "b", "a"}; -unsigned fReturnSizeMCS51 = 4; /* shared with ralloc.c */ +unsigned fReturnSizeMCS51 = 4; /* shared with ralloc.c */ char **fReturn = fReturn8051; static char *accUse[] = {"a", "b"}; -static short rbank = -1; +static unsigned short rbank = -1; static struct { short r0Pushed; short r1Pushed; + short r0InB; + short r1InB; short accInUse; short inLine; short debugLine; short nRegsSaved; set *sendSet; + iCode *current_iCode; + symbol *currentFunc; } _G; @@ -128,7 +115,7 @@ static unsigned char SRMask[] = /* emitcode - writes the code into a file : for now it is simple */ /*-----------------------------------------------------------------*/ static void -emitcode (char *inst, char *fmt,...) +emitcode (char *inst, const char *fmt,...) { va_list ap; char lb[INITIAL_INLINEASM]; @@ -139,31 +126,45 @@ emitcode (char *inst, char *fmt,...) if (inst && *inst) { if (fmt && *fmt) - sprintf (lb, "%s\t", inst); + SNPRINTF (lb, sizeof(lb), "%s\t", inst); else - sprintf (lb, "%s", inst); - vsprintf (lb + (strlen (lb)), fmt, ap); + SNPRINTF (lb, sizeof(lb), "%s", inst); + tvsprintf (lb + strlen(lb), sizeof(lb) - strlen(lb), fmt, ap); } else - vsprintf (lb, fmt, ap); + tvsprintf (lb, sizeof(lb), fmt, ap); while (isspace (*lbp)) lbp++; if (lbp && *lbp) lineCurr = (lineCurr ? - connectLine (lineCurr, newLineNode (lb)) : - (lineHead = newLineNode (lb))); + connectLine (lineCurr, newLineNode (lb)) : + (lineHead = newLineNode (lb))); lineCurr->isInline = _G.inLine; lineCurr->isDebug = _G.debugLine; + lineCurr->ic = _G.current_iCode; + lineCurr->isComment = (*lbp==';'); va_end (ap); } +/*-----------------------------------------------------------------*/ +/* mcs51_emitDebuggerSymbol - associate the current code location */ +/* with a debugger symbol */ +/*-----------------------------------------------------------------*/ +void +mcs51_emitDebuggerSymbol (char * debugSym) +{ + _G.debugLine = 1; + emitcode ("", "%s ==.", debugSym); + _G.debugLine = 0; +} + /*-----------------------------------------------------------------*/ /* mova - moves specified value into accumulator */ /*-----------------------------------------------------------------*/ static void -mova (char *x) +mova (const char *x) { /* do some early peephole optimization */ if (!strcmp(x, "a") || !strcmp(x, "acc")) @@ -178,8 +179,8 @@ mova (char *x) static regs * getFreePtr (iCode * ic, asmop ** aopp, bool result) { - bool r0iu = FALSE, r1iu = FALSE; - bool r0ou = FALSE, r1ou = FALSE; + bool r0iu, r1iu; + bool r0ou, r1ou; /* the logic: if r0 & r1 used in the instruction then we are in trouble otherwise */ @@ -218,12 +219,18 @@ getFreePtr (iCode * ic, asmop ** aopp, bool result) if (!r0iu) { /* push it if not already pushed */ - if (!_G.r0Pushed) - { - emitcode ("push", "%s", - mcs51_regWithIdx (R0_IDX)->dname); - _G.r0Pushed++; - } + if (ic->op == IPUSH) + { + emitcode ("mov", "b,%s", + mcs51_regWithIdx (R0_IDX)->dname); + _G.r0InB++; + } + else if (!_G.r0Pushed) + { + emitcode ("push", "%s", + mcs51_regWithIdx (R0_IDX)->dname); + _G.r0Pushed++; + } ic->rUsed = bitVectSetBit (ic->rUsed, R0_IDX); (*aopp)->type = AOP_R0; @@ -236,33 +243,102 @@ getFreePtr (iCode * ic, asmop ** aopp, bool result) if (!r1iu) { /* push it if not already pushed */ - if (!_G.r1Pushed) - { - emitcode ("push", "%s", - mcs51_regWithIdx (R1_IDX)->dname); - _G.r1Pushed++; - } + if (ic->op == IPUSH) + { + emitcode ("mov", "b,%s", + mcs51_regWithIdx (R1_IDX)->dname); + _G.r1InB++; + } + else if (!_G.r1Pushed) + { + emitcode ("push", "%s", + mcs51_regWithIdx (R1_IDX)->dname); + _G.r1Pushed++; + } ic->rUsed = bitVectSetBit (ic->rUsed, R1_IDX); (*aopp)->type = AOP_R1; return mcs51_regWithIdx (R1_IDX); } - endOfWorld: - /* I said end of world but not quite end of world yet */ - /* if this is a result then we can push it on the stack */ - if (result) - { - (*aopp)->type = AOP_STK; - return NULL; + /* I said end of world, but not quite end of world yet */ + if (result) { + /* we can push it on the stack */ + (*aopp)->type = AOP_STK; + return NULL; + } else { + /* in the case that result AND left AND right needs a pointer reg + we can safely use the result's */ + if (bitVectBitValue (mcs51_rUmaskForOp(IC_RESULT(ic)), R0_IDX)) { + (*aopp)->type = AOP_R0; + return mcs51_regWithIdx (R0_IDX); + } + if (bitVectBitValue (mcs51_rUmaskForOp(IC_RESULT(ic)), R1_IDX)) { + (*aopp)->type = AOP_R1; + return mcs51_regWithIdx (R1_IDX); } + } - /* other wise this is true end of the world */ + /* now this is REALLY the end of the world */ werror (E_INTERNAL_ERROR, __FILE__, __LINE__, - "getFreePtr should never reach here"); + "getFreePtr should never reach here"); exit (1); } + +/*-----------------------------------------------------------------*/ +/* getTempRegs - initialize an array of pointers to GPR registers */ +/* that are not in use. Returns 1 if the requested */ +/* number of registers were available, 0 otherwise. */ +/*-----------------------------------------------------------------*/ +int +getTempRegs(regs **tempRegs, int size, iCode *ic) +{ + bitVect * freeRegs; + int i; + int offset; + + if (!ic) + ic = _G.current_iCode; + if (!ic) + return 0; + if (!_G.currentFunc) + return 0; + + freeRegs = newBitVect(8); + bitVectSetBit (freeRegs, R2_IDX); + bitVectSetBit (freeRegs, R3_IDX); + bitVectSetBit (freeRegs, R4_IDX); + bitVectSetBit (freeRegs, R5_IDX); + bitVectSetBit (freeRegs, R6_IDX); + bitVectSetBit (freeRegs, R7_IDX); + + if (IFFUNC_CALLEESAVES(_G.currentFunc->type)) + { + bitVect * newfreeRegs; + newfreeRegs = bitVectIntersect (freeRegs, _G.currentFunc->regsUsed); + freeBitVect(freeRegs); + freeRegs = newfreeRegs; + } + freeRegs = bitVectCplAnd (freeRegs, ic->rMask); + + offset = 0; + for (i=0; isize; i++) + { + if (bitVectBitValue(freeRegs,i)) + tempRegs[offset++] = mcs51_regWithIdx(i); + if (offset>=size) + { + freeBitVect(freeRegs); + return 1; + } + } + + freeBitVect(freeRegs); + return 1; +} + + /*-----------------------------------------------------------------*/ /* newAsmop - creates a new asmOp */ /*-----------------------------------------------------------------*/ @@ -287,6 +363,74 @@ pointerCode (sym_link * etype) } + +/*-----------------------------------------------------------------*/ +/* leftRightUseAcc - returns size of accumulator use by operands */ +/*-----------------------------------------------------------------*/ +static int +leftRightUseAcc(iCode *ic) +{ + operand *op; + int size; + int accuseSize = 0; + int accuse = 0; + + if (!ic) + { + werror (E_INTERNAL_ERROR, __FILE__, __LINE__, + "null iCode pointer"); + return 0; + } + + if (ic->op == IFX) + { + op = IC_COND (ic); + if (IS_SYMOP (op) && OP_SYMBOL (op) && OP_SYMBOL (op)->accuse) + { + accuse = 1; + size = getSize (OP_SYMBOL (op)->type); + if (size>accuseSize) + accuseSize = size; + } + } + else if (ic->op == JUMPTABLE) + { + op = IC_JTCOND (ic); + if (IS_SYMOP (op) && OP_SYMBOL (op) && OP_SYMBOL (op)->accuse) + { + accuse = 1; + size = getSize (OP_SYMBOL (op)->type); + if (size>accuseSize) + accuseSize = size; + } + } + else + { + op = IC_LEFT (ic); + if (IS_SYMOP (op) && OP_SYMBOL (op) && OP_SYMBOL (op)->accuse) + { + accuse = 1; + size = getSize (OP_SYMBOL (op)->type); + if (size>accuseSize) + accuseSize = size; + } + op = IC_RIGHT (ic); + if (IS_SYMOP (op) && OP_SYMBOL (op) && OP_SYMBOL (op)->accuse) + { + accuse = 1; + size = getSize (OP_SYMBOL (op)->type); + if (size>accuseSize) + accuseSize = size; + } + } + + if (accuseSize) + return accuseSize; + else + return accuse; +} + + /*-----------------------------------------------------------------*/ /* aopForSym - for a true symbol */ /*-----------------------------------------------------------------*/ @@ -317,32 +461,32 @@ aopForSym (iCode * ic, symbol * sym, bool result) /* now assign the address of the variable to the pointer register */ if (aop->type != AOP_STK) - { - - if (sym->onStack) - { - if (_G.accInUse) - emitcode ("push", "acc"); - - emitcode ("mov", "a,_bp"); - emitcode ("add", "a,#0x%02x", - ((sym->stack < 0) ? - ((char) (sym->stack - _G.nRegsSaved)) : - ((char) sym->stack)) & 0xff); - emitcode ("mov", "%s,a", - aop->aopu.aop_ptr->name); - - if (_G.accInUse) - emitcode ("pop", "acc"); - } - else - emitcode ("mov", "%s,#%s", - aop->aopu.aop_ptr->name, - sym->rname); - aop->paged = space->paged; - } + { + + if (sym->onStack) + { + if (_G.accInUse || leftRightUseAcc (ic)) + emitcode ("push", "acc"); + + emitcode ("mov", "a,_bp"); + emitcode ("add", "a,#0x%02x", + ((sym->stack < 0) ? + ((char) (sym->stack - _G.nRegsSaved)) : + ((char) sym->stack)) & 0xff); + emitcode ("mov", "%s,a", + aop->aopu.aop_ptr->name); + + if (_G.accInUse || leftRightUseAcc (ic)) + emitcode ("pop", "acc"); + } + else + emitcode ("mov", "%s,#%s", + aop->aopu.aop_ptr->name, + sym->rname); + aop->paged = space->paged; + } else - aop->aopu.aop_stk = sym->stack; + aop->aopu.aop_stk = sym->stack; return aop; } @@ -357,6 +501,9 @@ aopForSym (iCode * ic, symbol * sym, bool result) /* if it is in direct space */ if (IN_DIRSPACE (space)) { + //printf("aopForSym, using AOP_DIR for %s (%x)\n", sym->name, sym); + //printTypeChainRaw(sym->type, NULL); + //printf("space = %s\n", space ? space->sname : "NULL"); sym->aop = aop = newAsmop (AOP_DIR); aop->aopu.aop_dir = sym->rname; aop->size = getSize (sym->type); @@ -400,19 +547,19 @@ aopForRemat (symbol * sym) for (;;) { if (ic->op == '+') - val += (int) operandLitValue (IC_RIGHT (ic)); + val += (int) operandLitValue (IC_RIGHT (ic)); else if (ic->op == '-') - val -= (int) operandLitValue (IC_RIGHT (ic)); + val -= (int) operandLitValue (IC_RIGHT (ic)); else if (IS_CAST_ICODE(ic)) { - sym_link *from_type = operandType(IC_RIGHT(ic)); - aop->aopu.aop_immd.from_cast_remat = 1; - ic = OP_SYMBOL (IC_RIGHT (ic))->rematiCode; - ptr_type = DCL_TYPE(from_type); - if (ptr_type == IPOINTER) { - // bug #481053 - ptr_type = POINTER; - } - continue ; + sym_link *from_type = operandType(IC_RIGHT(ic)); + aop->aopu.aop_immd.from_cast_remat = 1; + ic = OP_SYMBOL (IC_RIGHT (ic))->rematiCode; + ptr_type = DCL_TYPE(from_type); + if (ptr_type == IPOINTER) { + // bug #481053 + ptr_type = POINTER; + } + continue ; } else break; ic = OP_SYMBOL (IC_LEFT (ic))->rematiCode; @@ -420,9 +567,9 @@ aopForRemat (symbol * sym) if (val) sprintf (buffer, "(%s %c 0x%04x)", - OP_SYMBOL (IC_LEFT (ic))->rname, - val >= 0 ? '+' : '-', - abs (val) & 0xffff); + OP_SYMBOL (IC_LEFT (ic))->rname, + val >= 0 ? '+' : '-', + abs (val) & 0xffff); else strcpy (buffer, OP_SYMBOL (IC_LEFT (ic))->rname); @@ -430,9 +577,9 @@ aopForRemat (symbol * sym) strcpy (aop->aopu.aop_immd.aop_immd1, buffer); /* set immd2 field if required */ if (aop->aopu.aop_immd.from_cast_remat) { - sprintf(buffer,"#0x%02x",ptr_type); - aop->aopu.aop_immd.aop_immd2 = Safe_calloc (1, strlen (buffer) + 1); - strcpy (aop->aopu.aop_immd.aop_immd2, buffer); + sprintf(buffer,"#0x%02x",ptr_type); + aop->aopu.aop_immd.aop_immd2 = Safe_calloc (1, strlen (buffer) + 1); + strcpy (aop->aopu.aop_immd.aop_immd2, buffer); } return aop; @@ -461,16 +608,16 @@ regsInCommon (operand * op1, operand * op2) { int j; if (!sym1->regs[i]) - continue; + continue; for (j = 0; j < sym2->nRegs; j++) - { - if (!sym2->regs[j]) - continue; + { + if (!sym2->regs[j]) + continue; - if (sym2->regs[j] == sym1->regs[i]) - return TRUE; - } + if (sym2->regs[j] == sym1->regs[i]) + return TRUE; + } } return FALSE; @@ -484,7 +631,7 @@ operandsEqu (operand * op1, operand * op2) { symbol *sym1, *sym2; - /* if they not symbols */ + /* if they're not symbols */ if (!IS_SYMOP (op1) || !IS_SYMOP (op2)) return FALSE; @@ -501,10 +648,11 @@ operandsEqu (operand * op1, operand * op2) if (sym1 == sym2) return TRUE; - if (strcmp (sym1->rname, sym2->rname) == 0) + /* if they have the same rname */ + if (sym1->rname[0] && sym2->rname[0] + && strcmp (sym1->rname, sym2->rname) == 0) return TRUE; - /* if left is a tmp & right is not */ if (IS_ITEMP (op1) && !IS_ITEMP (op2) && @@ -542,7 +690,7 @@ sameRegs (asmop * aop1, asmop * aop2) for (i = 0; i < aop1->size; i++) if (aop1->aopu.aop_reg[i] != - aop2->aopu.aop_reg[i]) + aop2->aopu.aop_reg[i]) return FALSE; return TRUE; @@ -614,41 +762,49 @@ aopOp (operand * op, iCode * ic, bool result) /* rematerialize it NOW */ if (sym->remat) - { - sym->aop = op->aop = aop = - aopForRemat (sym); - aop->size = getSize (sym->type); - return; - } + { + sym->aop = op->aop = aop = + aopForRemat (sym); + aop->size = getSize (sym->type); + return; + } if (sym->accuse) - { - int i; - aop = op->aop = sym->aop = newAsmop (AOP_ACC); - aop->size = getSize (sym->type); - for (i = 0; i < 2; i++) - aop->aopu.aop_str[i] = accUse[i]; - return; - } + { + int i; + aop = op->aop = sym->aop = newAsmop (AOP_ACC); + aop->size = getSize (sym->type); + for (i = 0; i < 2; i++) + aop->aopu.aop_str[i] = accUse[i]; + return; + } if (sym->ruonly) - { - unsigned i; - - aop = op->aop = sym->aop = newAsmop (AOP_STR); - aop->size = getSize (sym->type); - for (i = 0; i < fReturnSizeMCS51; i++) - aop->aopu.aop_str[i] = fReturn[i]; - return; - } + { + unsigned i; - /* 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 = op->aop = sym->aop = newAsmop (AOP_STR); + aop->size = getSize (sym->type); + for (i = 0; i < fReturnSizeMCS51; i++) + aop->aopu.aop_str[i] = fReturn[i]; + return; + } + + if (sym->usl.spillLoc) + { + if (getSize(sym->type) != getSize(sym->usl.spillLoc->type)) + { + /* force a new aop if sizes differ */ + sym->usl.spillLoc->aop = NULL; + } + sym->aop = op->aop = aop = + aopForSym (ic, sym->usl.spillLoc, result); + aop->size = getSize (sym->type); + return; + } + + /* else must be a dummy iTemp */ + sym->aop = op->aop = aop = newAsmop (AOP_DUMMY); aop->size = getSize (sym->type); return; } @@ -686,70 +842,80 @@ freeAsmop (operand * op, asmop * aaop, iCode * ic, bool pop) switch (aop->type) { case AOP_R0: - if (_G.r0Pushed) - { - if (pop) - { - emitcode ("pop", "ar0"); - _G.r0Pushed--; - } - } + if (_G.r0InB) + { + emitcode ("mov", "r0,b"); + _G.r0InB--; + } + else if (_G.r0Pushed) + { + if (pop) + { + emitcode ("pop", "ar0"); + _G.r0Pushed--; + } + } bitVectUnSetBit (ic->rUsed, R0_IDX); break; case AOP_R1: + if (_G.r1InB) + { + emitcode ("mov", "r1,b"); + _G.r1InB--; + } if (_G.r1Pushed) - { - if (pop) - { - emitcode ("pop", "ar1"); - _G.r1Pushed--; - } - } + { + if (pop) + { + emitcode ("pop", "ar1"); + _G.r1Pushed--; + } + } bitVectUnSetBit (ic->rUsed, R1_IDX); break; case AOP_STK: { - int sz = aop->size; - int stk = aop->aopu.aop_stk + aop->size; - bitVectUnSetBit (ic->rUsed, R0_IDX); - bitVectUnSetBit (ic->rUsed, R1_IDX); - - getFreePtr (ic, &aop, FALSE); - - if (stk) - { - emitcode ("mov", "a,_bp"); - emitcode ("add", "a,#0x%02x", ((char) stk) & 0xff); - emitcode ("mov", "%s,a", aop->aopu.aop_ptr->name); - } - else - { - emitcode ("mov", "%s,_bp", aop->aopu.aop_ptr->name); - } - - while (sz--) - { - emitcode ("pop", "acc"); - emitcode ("mov", "@%s,a", aop->aopu.aop_ptr->name); - if (!sz) - break; - emitcode ("dec", "%s", aop->aopu.aop_ptr->name); - } - op->aop = aop; - freeAsmop (op, NULL, ic, TRUE); - if (_G.r0Pushed) - { - emitcode ("pop", "ar0"); - _G.r0Pushed--; - } - - if (_G.r1Pushed) - { - emitcode ("pop", "ar1"); - _G.r1Pushed--; - } + int sz = aop->size; + int stk = aop->aopu.aop_stk + aop->size - 1; + bitVectUnSetBit (ic->rUsed, R0_IDX); + bitVectUnSetBit (ic->rUsed, R1_IDX); + + getFreePtr (ic, &aop, FALSE); + + if (stk) + { + emitcode ("mov", "a,_bp"); + emitcode ("add", "a,#0x%02x", ((char) stk) & 0xff); + emitcode ("mov", "%s,a", aop->aopu.aop_ptr->name); + } + else + { + emitcode ("mov", "%s,_bp", aop->aopu.aop_ptr->name); + } + + while (sz--) + { + emitcode ("pop", "acc"); + emitcode ("mov", "@%s,a", aop->aopu.aop_ptr->name); + if (!sz) + break; + emitcode ("dec", "%s", aop->aopu.aop_ptr->name); + } + op->aop = aop; + freeAsmop (op, NULL, ic, TRUE); + if (_G.r1Pushed) + { + emitcode ("pop", "ar1"); + _G.r1Pushed--; + } + + if (_G.r0Pushed) + { + emitcode ("pop", "ar0"); + _G.r0Pushed--; + } } } @@ -759,13 +925,88 @@ dealloc: { op->aop = NULL; if (IS_SYMOP (op)) - { - OP_SYMBOL (op)->aop = NULL; - /* if the symbol has a spill */ - if (SPIL_LOC (op)) - SPIL_LOC (op)->aop = NULL; - } + { + OP_SYMBOL (op)->aop = NULL; + /* if the symbol has a spill */ + if (SPIL_LOC (op)) + SPIL_LOC (op)->aop = NULL; + } + } +} + +/*------------------------------------------------------------------*/ +/* freeForBranchAsmop - partial free up of Asmop for a branch; just */ +/* pop r0 or r1 off stack if pushed */ +/*------------------------------------------------------------------*/ +static void +freeForBranchAsmop (operand * op) +{ + asmop *aop; + + if (!op) + return; + + aop = op->aop; + + if (!aop) + return; + + if (aop->freed) + return; + + switch (aop->type) + { + case AOP_R0: + if (_G.r0InB) + { + emitcode ("mov", "r0,b"); + } + else if (_G.r0Pushed) + { + emitcode ("pop", "ar0"); + } + break; + + case AOP_R1: + if (_G.r1InB) + { + emitcode ("mov", "r1,b"); + } + else if (_G.r1Pushed) + { + emitcode ("pop", "ar1"); + } + break; + + case AOP_STK: + { + int sz = aop->size; + int stk = aop->aopu.aop_stk + aop->size - 1; + + emitcode ("mov", "b,r0"); + if (stk) + { + emitcode ("mov", "a,_bp"); + emitcode ("add", "a,#0x%02x", ((char) stk) & 0xff); + emitcode ("mov", "r0,a"); + } + else + { + emitcode ("mov", "r0,_bp"); + } + + while (sz--) + { + emitcode ("pop", "acc"); + emitcode ("mov", "@r0,a"); + if (!sz) + break; + emitcode ("dec", "r0"); + } + emitcode ("mov", "r0,b"); + } } + } /*-----------------------------------------------------------------*/ @@ -784,7 +1025,7 @@ aopGetUsesAcc (asmop *aop, int offset) case AOP_R0: case AOP_R1: if (aop->paged) - return TRUE; + return TRUE; return FALSE; case AOP_DPTR: return TRUE; @@ -803,7 +1044,9 @@ aopGetUsesAcc (asmop *aop, int offset) return FALSE; case AOP_STR: if (strcmp (aop->aopu.aop_str[offset], "a") == 0) - return TRUE; + return TRUE; + return FALSE; + case AOP_DUMMY: return FALSE; default: /* Error case --- will have been caught already */ @@ -812,7 +1055,6 @@ aopGetUsesAcc (asmop *aop, int offset) } } - /*-----------------------------------------------------------------*/ /* aopGet - for fetching value of the aop */ /*-----------------------------------------------------------------*/ @@ -831,91 +1073,99 @@ aopGet (asmop * aop, int offset, bool bit16, bool dname) /* depending on type */ switch (aop->type) { + case AOP_DUMMY: + return zero; case AOP_R0: case AOP_R1: /* if we need to increment it */ while (offset > aop->coff) - { - emitcode ("inc", "%s", aop->aopu.aop_ptr->name); - aop->coff++; - } + { + emitcode ("inc", "%s", aop->aopu.aop_ptr->name); + aop->coff++; + } while (offset < aop->coff) - { - emitcode ("dec", "%s", aop->aopu.aop_ptr->name); - aop->coff--; - } + { + emitcode ("dec", "%s", aop->aopu.aop_ptr->name); + aop->coff--; + } aop->coff = offset; if (aop->paged) - { - emitcode ("movx", "a,@%s", aop->aopu.aop_ptr->name); - return (dname ? "acc" : "a"); - } + { + emitcode ("movx", "a,@%s", aop->aopu.aop_ptr->name); + return (dname ? "acc" : "a"); + } sprintf (s, "@%s", aop->aopu.aop_ptr->name); rs = Safe_calloc (1, strlen (s) + 1); strcpy (rs, s); return rs; case AOP_DPTR: + if (aop->code && aop->coff==0 && offset>=1) { + emitcode ("mov", "a,#0x%02x", offset); + emitcode ("movc", "a,@a+dptr"); + return (dname ? "acc" : "a"); + } + while (offset > aop->coff) - { - emitcode ("inc", "dptr"); - aop->coff++; - } + { + emitcode ("inc", "dptr"); + aop->coff++; + } while (offset < aop->coff) - { - emitcode ("lcall", "__decdptr"); - aop->coff--; - } + { + emitcode ("lcall", "__decdptr"); + aop->coff--; + } aop->coff = offset; if (aop->code) - { - emitcode ("clr", "a"); - emitcode ("movc", "a,@a+dptr"); - } + { + emitcode ("clr", "a"); + emitcode ("movc", "a,@a+dptr"); + } else - { - emitcode ("movx", "a,@dptr"); - } + { + emitcode ("movx", "a,@dptr"); + } return (dname ? "acc" : "a"); case AOP_IMMD: if (aop->aopu.aop_immd.from_cast_remat && (offset == (aop->size-1))) { - sprintf(s,"%s",aop->aopu.aop_immd.aop_immd2); + sprintf(s,"%s",aop->aopu.aop_immd.aop_immd2); } else if (bit16) - sprintf (s, "#%s", aop->aopu.aop_immd.aop_immd1); + sprintf (s, "#%s", aop->aopu.aop_immd.aop_immd1); else if (offset) - sprintf (s, "#(%s >> %d)", - aop->aopu.aop_immd.aop_immd1, - offset * 8); + sprintf (s, "#(%s >> %d)", + aop->aopu.aop_immd.aop_immd1, + offset * 8); else - sprintf (s, "#%s", - aop->aopu.aop_immd.aop_immd1); + sprintf (s, "#%s", + aop->aopu.aop_immd.aop_immd1); rs = Safe_calloc (1, strlen (s) + 1); strcpy (rs, s); return rs; case AOP_DIR: if (offset) - sprintf (s, "(%s + %d)", - aop->aopu.aop_dir, - offset); + sprintf (s, "(%s + %d)", + aop->aopu.aop_dir, + offset); else - sprintf (s, "%s", aop->aopu.aop_dir); + sprintf (s, "%s", aop->aopu.aop_dir); rs = Safe_calloc (1, strlen (s) + 1); strcpy (rs, s); return rs; case AOP_REG: if (dname) - return aop->aopu.aop_reg[offset]->dname; + return aop->aopu.aop_reg[offset]->dname; else - return aop->aopu.aop_reg[offset]->name; + return aop->aopu.aop_reg[offset]->name; case AOP_CRY: emitcode ("clr", "a"); @@ -925,7 +1175,7 @@ aopGet (asmop * aop, int offset, bool bit16, bool dname) case AOP_ACC: if (!offset && dname) - return "acc"; + return "acc"; return aop->aopu.aop_str[offset]; case AOP_LIT: @@ -934,29 +1184,29 @@ aopGet (asmop * aop, int offset, bool bit16, bool dname) case AOP_STR: aop->coff = offset; if (strcmp (aop->aopu.aop_str[offset], "a") == 0 && - dname) - return "acc"; + dname) + return "acc"; return aop->aopu.aop_str[offset]; } werror (E_INTERNAL_ERROR, __FILE__, __LINE__, - "aopget got unsupported aop->type"); + "aopget got unsupported aop->type"); exit (1); } /*-----------------------------------------------------------------*/ /* aopPut - puts a string for a aop */ /*-----------------------------------------------------------------*/ static void -aopPut (asmop * aop, char *s, int offset) +aopPut (asmop * aop, const char *s, int offset, bool bvolatile) { char *d = buffer; if (aop->size && offset > (aop->size - 1)) { werror (E_INTERNAL_ERROR, __FILE__, __LINE__, - "aopPut got offset > aop->size"); + "aopPut got offset > aop->size"); exit (1); } @@ -964,58 +1214,63 @@ aopPut (asmop * aop, char *s, int offset) /* depending on where it is ofcourse */ switch (aop->type) { + case AOP_DUMMY: + MOVA (s); /* read s in case it was volatile */ + break; + case AOP_DIR: if (offset) - sprintf (d, "(%s + %d)", - aop->aopu.aop_dir, offset); + sprintf (d, "(%s + %d)", + aop->aopu.aop_dir, offset); else - sprintf (d, "%s", aop->aopu.aop_dir); + sprintf (d, "%s", aop->aopu.aop_dir); - if (strcmp (d, s)) - emitcode ("mov", "%s,%s", d, s); + if (strcmp (d, s) || + bvolatile) + emitcode ("mov", "%s,%s", d, s); break; case AOP_REG: if (strcmp (aop->aopu.aop_reg[offset]->name, s) != 0 && - strcmp (aop->aopu.aop_reg[offset]->dname, s) != 0) - { - if (*s == '@' || - strcmp (s, "r0") == 0 || - strcmp (s, "r1") == 0 || - strcmp (s, "r2") == 0 || - strcmp (s, "r3") == 0 || - strcmp (s, "r4") == 0 || - strcmp (s, "r5") == 0 || - strcmp (s, "r6") == 0 || - strcmp (s, "r7") == 0) - emitcode ("mov", "%s,%s", - aop->aopu.aop_reg[offset]->dname, s); - else - emitcode ("mov", "%s,%s", - aop->aopu.aop_reg[offset]->name, s); - } + strcmp (aop->aopu.aop_reg[offset]->dname, s) != 0) + { + if (*s == '@' || + strcmp (s, "r0") == 0 || + strcmp (s, "r1") == 0 || + strcmp (s, "r2") == 0 || + strcmp (s, "r3") == 0 || + strcmp (s, "r4") == 0 || + strcmp (s, "r5") == 0 || + strcmp (s, "r6") == 0 || + strcmp (s, "r7") == 0) + emitcode ("mov", "%s,%s", + aop->aopu.aop_reg[offset]->dname, s); + else + emitcode ("mov", "%s,%s", + aop->aopu.aop_reg[offset]->name, s); + } break; case AOP_DPTR: if (aop->code) - { - werror (E_INTERNAL_ERROR, __FILE__, __LINE__, - "aopPut writting to code space"); - exit (1); - } + { + werror (E_INTERNAL_ERROR, __FILE__, __LINE__, + "aopPut writing to code space"); + exit (1); + } while (offset > aop->coff) - { - aop->coff++; - emitcode ("inc", "dptr"); - } + { + aop->coff++; + emitcode ("inc", "dptr"); + } while (offset < aop->coff) - { - aop->coff--; - emitcode ("lcall", "__decdptr"); - } + { + aop->coff--; + emitcode ("lcall", "__decdptr"); + } aop->coff = offset; @@ -1028,108 +1283,111 @@ aopPut (asmop * aop, char *s, int offset) case AOP_R0: case AOP_R1: while (offset > aop->coff) - { - aop->coff++; - emitcode ("inc", "%s", aop->aopu.aop_ptr->name); - } + { + aop->coff++; + emitcode ("inc", "%s", aop->aopu.aop_ptr->name); + } while (offset < aop->coff) - { - aop->coff--; - emitcode ("dec", "%s", aop->aopu.aop_ptr->name); - } + { + aop->coff--; + emitcode ("dec", "%s", aop->aopu.aop_ptr->name); + } aop->coff = offset; if (aop->paged) - { - MOVA (s); - emitcode ("movx", "@%s,a", aop->aopu.aop_ptr->name); + { + MOVA (s); + emitcode ("movx", "@%s,a", aop->aopu.aop_ptr->name); - } + } else if (*s == '@') - { - MOVA (s); - emitcode ("mov", "@%s,a", aop->aopu.aop_ptr->name); - } + { + MOVA (s); + emitcode ("mov", "@%s,a", aop->aopu.aop_ptr->name); + } else if (strcmp (s, "r0") == 0 || - strcmp (s, "r1") == 0 || - strcmp (s, "r2") == 0 || - strcmp (s, "r3") == 0 || - strcmp (s, "r4") == 0 || - strcmp (s, "r5") == 0 || - strcmp (s, "r6") == 0 || - strcmp (s, "r7") == 0) - { - char buffer[10]; - sprintf (buffer, "a%s", s); - emitcode ("mov", "@%s,%s", - aop->aopu.aop_ptr->name, buffer); - } + strcmp (s, "r1") == 0 || + strcmp (s, "r2") == 0 || + strcmp (s, "r3") == 0 || + strcmp (s, "r4") == 0 || + strcmp (s, "r5") == 0 || + strcmp (s, "r6") == 0 || + strcmp (s, "r7") == 0) + { + char buffer[10]; + sprintf (buffer, "a%s", s); + emitcode ("mov", "@%s,%s", + aop->aopu.aop_ptr->name, buffer); + } else - emitcode ("mov", "@%s,%s", aop->aopu.aop_ptr->name, s); + emitcode ("mov", "@%s,%s", aop->aopu.aop_ptr->name, s); break; case AOP_STK: if (strcmp (s, "a") == 0) - emitcode ("push", "acc"); + emitcode ("push", "acc"); else - if (*s=='@') { - MOVA(s); - emitcode ("push", "acc"); - } else { - emitcode ("push", s); - } + if (*s=='@') { + MOVA(s); + emitcode ("push", "acc"); + } else { + emitcode ("push", s); + } break; case AOP_CRY: /* if bit variable */ if (!aop->aopu.aop_dir) - { - emitcode ("clr", "a"); - emitcode ("rlc", "a"); - } + { + emitcode ("clr", "a"); + emitcode ("rlc", "a"); + } else - { - if (s == zero) - emitcode ("clr", "%s", aop->aopu.aop_dir); - else if (s == one) - emitcode ("setb", "%s", aop->aopu.aop_dir); - else if (!strcmp (s, "c")) - emitcode ("mov", "%s,c", aop->aopu.aop_dir); - else - { - if (strcmp (s, "a")) - { - MOVA (s); - } - { - /* set C, if a >= 1 */ + { + if (s == zero) + emitcode ("clr", "%s", aop->aopu.aop_dir); + else if (s == one) + emitcode ("setb", "%s", aop->aopu.aop_dir); + else if (!strcmp (s, "c")) + emitcode ("mov", "%s,c", aop->aopu.aop_dir); + else + { + if (strcmp (s, "a")) + { + MOVA (s); + } + { + /* set C, if a >= 1 */ emitcode ("add", "a,#0xff"); - emitcode ("mov", "%s,c", aop->aopu.aop_dir); - } - } - } + emitcode ("mov", "%s,c", aop->aopu.aop_dir); + } + } + } 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); + if (strcmp (aop->aopu.aop_str[offset], s) || + bvolatile) + emitcode ("mov", "%s,%s", aop->aopu.aop_str[offset], s); break; case AOP_ACC: aop->coff = offset; - if (!offset && (strcmp (s, "acc") == 0)) - break; + if (!offset && (strcmp (s, "acc") == 0) && + !bvolatile) + break; - if (strcmp (aop->aopu.aop_str[offset], s)) - emitcode ("mov", "%s,%s", aop->aopu.aop_str[offset], s); + if (strcmp (aop->aopu.aop_str[offset], s) && + !bvolatile) + emitcode ("mov", "%s,%s", aop->aopu.aop_str[offset], s); break; default: werror (E_INTERNAL_ERROR, __FILE__, __LINE__, - "aopPut got unsupported aop->type"); + "aopPut got unsupported aop->type"); exit (1); } @@ -1153,11 +1411,11 @@ pointToEnd (asmop * aop) case AOP_R0: case AOP_R1: while (count--) - emitcode ("inc", "%s", aop->aopu.aop_ptr->name); + emitcode ("inc", "%s", aop->aopu.aop_ptr->name); break; case AOP_DPTR: while (count--) - emitcode ("inc", "dptr"); + emitcode ("inc", "dptr"); break; } @@ -1178,13 +1436,13 @@ reAdjustPreg (asmop * aop) case AOP_R0: case AOP_R1: while (aop->coff--) - emitcode ("dec", "%s", aop->aopu.aop_ptr->name); + emitcode ("dec", "%s", aop->aopu.aop_ptr->name); break; case AOP_DPTR: while (aop->coff--) - { - emitcode ("lcall", "__decdptr"); - } + { + emitcode ("lcall", "__decdptr"); + } break; } aop->coff = 0; @@ -1203,46 +1461,6 @@ reAdjustPreg (asmop * aop) (x->aopu.aop_reg[0] == mcs51_regWithIdx(R0_IDX) || \ x->aopu.aop_reg[0] == mcs51_regWithIdx(R1_IDX) ))) -/*-----------------------------------------------------------------*/ -/* genNotFloat - generates not for float operations */ -/*-----------------------------------------------------------------*/ -static void -genNotFloat (operand * op, operand * res) -{ - int size, offset; - char *l; - symbol *tlbl; - - D(emitcode ("; genNotFloat","")); - - /* we will put 127 in the first byte of - the result */ - aopPut (AOP (res), "#127", 0); - size = AOP_SIZE (op) - 1; - offset = 1; - - l = aopGet (op->aop, offset++, FALSE, FALSE); - MOVA (l); - - while (size--) - { - emitcode ("orl", "a,%s", - aopGet (op->aop, - offset++, FALSE, FALSE)); - } - - tlbl = newiTempLabel (NULL); - aopPut (res->aop, one, 1); - emitcode ("jz", "%05d$", (tlbl->key + 100)); - aopPut (res->aop, zero, 1); - emitcode ("", "%05d$:", (tlbl->key + 100)); - - size = res->aop->size - 2; - offset = 2; - /* put zeros in the rest */ - while (size--) - aopPut (res->aop, zero, offset++); -} /*-----------------------------------------------------------------*/ /* opIsGptr: returns non-zero if the passed operand is */ @@ -1272,12 +1490,12 @@ getDataSize (operand * op) { sym_link *type = operandType (op); if (IS_GENPTR (type)) - { - /* generic pointer; arithmetic operations - * should ignore the high byte (pointer type). - */ - size--; - } + { + /* generic pointer; arithmetic operations + * should ignore the high byte (pointer type). + */ + size--; + } } return size; } @@ -1292,14 +1510,14 @@ outAcc (operand * result) size = getDataSize (result); if (size) { - aopPut (AOP (result), "a", 0); + aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE)); size--; offset = 1; /* unsigned or positive */ while (size--) - { - aopPut (AOP (result), zero, offset++); - } + { + aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE)); + } } } @@ -1311,7 +1529,7 @@ outBitC (operand * result) { /* if the result is bit */ if (AOP_TYPE (result) == AOP_CRY) - aopPut (AOP (result), "c", 0); + aopPut (AOP (result), "c", 0, isOperandVolatile (result, FALSE)); else { emitcode ("clr", "a"); @@ -1341,7 +1559,6 @@ static void genNot (iCode * ic) { symbol *tlbl; - sym_link *optype = operandType (IC_LEFT (ic)); D(emitcode ("; genNot","")); @@ -1358,13 +1575,6 @@ genNot (iCode * ic) goto release; } - /* if type float then do float */ - if (IS_FLOAT (optype)) - { - genNotFloat (IC_LEFT (ic), IC_RESULT (ic)); - goto release; - } - toBoolean (IC_LEFT (ic)); tlbl = newiTempLabel (NULL); @@ -1396,20 +1606,34 @@ genCpl (iCode * ic) aopOp (IC_RESULT (ic), ic, TRUE); /* special case if in bit space */ - if (AOP_TYPE (IC_RESULT (ic)) == AOP_CRY) { - if (AOP_TYPE (IC_LEFT (ic)) == AOP_CRY) { - emitcode ("mov", "c,%s", IC_LEFT (ic)->aop->aopu.aop_dir); - emitcode ("cpl", "c"); - emitcode ("mov", "%s,c", IC_RESULT (ic)->aop->aopu.aop_dir); + if (AOP_TYPE (IC_RESULT (ic)) == AOP_CRY) + { + if (AOP_TYPE (IC_LEFT (ic)) == AOP_CRY) + { + /* promotion rules are responsible for this strange result: */ + emitcode ("setb", "%s", IC_RESULT (ic)->aop->aopu.aop_dir); + goto release; + } + + tlbl=newiTempLabel(NULL); + if (AOP_TYPE (IC_LEFT (ic)) == AOP_ACC || + AOP_TYPE (IC_LEFT (ic)) == AOP_REG || + IS_AOP_PREG (IC_LEFT (ic))) + { + emitcode ("cjne", "%s,#0x01,%05d$", + aopGet (AOP (IC_LEFT (ic)), 0, FALSE, FALSE), + tlbl->key + 100); + } + else + { + char *l = aopGet (AOP (IC_LEFT (ic)), 0, FALSE, FALSE); + MOVA (l); + emitcode ("cjne", "a,#0x01,%05d$", tlbl->key + 100); + } + emitcode ("", "%05d$:", tlbl->key + 100); + outBitC (IC_RESULT(ic)); goto release; } - tlbl=newiTempLabel(NULL); - emitcode ("cjne", "%s,#0x01,%05d$", - aopGet(AOP(IC_LEFT(ic)), 0, FALSE,FALSE), tlbl->key+100); - emitcode ("", "%05d$:", tlbl->key+100); - outBitC (IC_RESULT(ic)); - goto release; - } size = AOP_SIZE (IC_RESULT (ic)); while (size--) @@ -1417,7 +1641,7 @@ genCpl (iCode * ic) char *l = aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE); MOVA (l); emitcode ("cpl", "a"); - aopPut (AOP (IC_RESULT (ic)), "a", offset++); + aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE)); } @@ -1438,23 +1662,25 @@ genUminusFloat (operand * op, operand * result) D(emitcode ("; genUminusFloat","")); - /* for this we just need to flip the - first it then copy the rest in place */ - size = AOP_SIZE (op) - 1; - l = aopGet (AOP (op), 3, FALSE, FALSE); - - MOVA (l); + /* for this we just copy and then flip the bit */ - emitcode ("cpl", "acc.7"); - aopPut (AOP (result), "a", 3); + size = AOP_SIZE (op) - 1; while (size--) { aopPut (AOP (result), - aopGet (AOP (op), offset, FALSE, FALSE), - offset); + aopGet (AOP (op), offset, FALSE, FALSE), + offset, + isOperandVolatile (result, FALSE)); offset++; } + + l = aopGet (AOP (op), offset, FALSE, FALSE); + + MOVA (l); + + emitcode ("cpl", "acc.7"); + aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE)); } /*-----------------------------------------------------------------*/ @@ -1503,20 +1729,20 @@ genUminus (iCode * ic) { char *l = aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE); if (!strcmp (l, "a")) - { - if (offset == 0) - SETC; - emitcode ("cpl", "a"); - emitcode ("addc", "a,#0"); - } + { + if (offset == 0) + SETC; + emitcode ("cpl", "a"); + emitcode ("addc", "a,#0"); + } else - { - if (offset == 0) - CLRC; - emitcode ("clr", "a"); - emitcode ("subb", "a,%s", l); - } - aopPut (AOP (IC_RESULT (ic)), "a", offset++); + { + if (offset == 0) + CLRC; + emitcode ("clr", "a"); + emitcode ("subb", "a,%s", l); + } + aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE)); } /* if any remaining bytes in the result */ @@ -1526,7 +1752,7 @@ genUminus (iCode * ic) emitcode ("rlc", "a"); emitcode ("subb", "a,acc"); while (size--) - aopPut (AOP (IC_RESULT (ic)), "a", offset++); + aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE)); } release: @@ -1558,42 +1784,45 @@ saveRegisters (iCode * lic) /* if the registers have been saved already or don't need to be then do nothing */ - if (ic->regsSaved || IFFUNC_CALLEESAVES(OP_SYMBOL(IC_LEFT(ic))->type) || - IFFUNC_ISNAKED(OP_SYM_TYPE(IC_LEFT (ic)))) + if (ic->regsSaved) + return; + if (IS_SYMOP(IC_LEFT(ic)) && + (IFFUNC_CALLEESAVES(OP_SYMBOL(IC_LEFT(ic))->type) || + IFFUNC_ISNAKED(OP_SYM_TYPE(IC_LEFT (ic))))) return; /* safe the registers in use at this time but skip the ones for the result */ - rsave = bitVectCplAnd (bitVectCopy (ic->rMask), - mcs51_rUmaskForOp (IC_RESULT(ic))); + rsave = bitVectCplAnd (bitVectCopy (ic->rMask), + mcs51_rUmaskForOp (IC_RESULT(ic))); ic->regsSaved = 1; if (options.useXstack) { if (bitVectBitValue (rsave, R0_IDX)) - emitcode ("mov", "b,r0"); + emitcode ("mov", "b,r0"); emitcode ("mov", "r0,%s", spname); for (i = 0; i < mcs51_nRegs; i++) - { - if (bitVectBitValue (rsave, i)) - { - if (i == R0_IDX) - emitcode ("mov", "a,b"); - else - emitcode ("mov", "a,%s", mcs51_regWithIdx (i)->name); - emitcode ("movx", "@r0,a"); - emitcode ("inc", "r0"); - } - } + { + if (bitVectBitValue (rsave, i)) + { + if (i == R0_IDX) + emitcode ("mov", "a,b"); + else + emitcode ("mov", "a,%s", mcs51_regWithIdx (i)->name); + emitcode ("movx", "@r0,a"); + emitcode ("inc", "r0"); + } + } emitcode ("mov", "%s,r0", spname); if (bitVectBitValue (rsave, R0_IDX)) - emitcode ("mov", "r0,b"); + emitcode ("mov", "r0,b"); } else for (i = 0; i < mcs51_nRegs; i++) { - if (bitVectBitValue (rsave, i)) - emitcode ("push", "%s", mcs51_regWithIdx (i)->dname); + if (bitVectBitValue (rsave, i)) + emitcode ("push", "%s", mcs51_regWithIdx (i)->dname); } } @@ -1608,34 +1837,34 @@ unsaveRegisters (iCode * ic) /* restore the registers in use at this time but skip the ones for the result */ - rsave = bitVectCplAnd (bitVectCopy (ic->rMask), - mcs51_rUmaskForOp (IC_RESULT(ic))); + rsave = bitVectCplAnd (bitVectCopy (ic->rMask), + mcs51_rUmaskForOp (IC_RESULT(ic))); if (options.useXstack) { emitcode ("mov", "r0,%s", spname); for (i = mcs51_nRegs; i >= 0; i--) - { - if (bitVectBitValue (rsave, i)) - { - emitcode ("dec", "r0"); - emitcode ("movx", "a,@r0"); - if (i == R0_IDX) - emitcode ("mov", "b,a"); - else - emitcode ("mov", "%s,a", mcs51_regWithIdx (i)->name); - } - - } + { + if (bitVectBitValue (rsave, i)) + { + emitcode ("dec", "r0"); + emitcode ("movx", "a,@r0"); + if (i == R0_IDX) + emitcode ("mov", "b,a"); + else + emitcode ("mov", "%s,a", mcs51_regWithIdx (i)->name); + } + + } emitcode ("mov", "%s,r0", spname); if (bitVectBitValue (rsave, R0_IDX)) - emitcode ("mov", "r0,b"); + emitcode ("mov", "r0,b"); } else for (i = mcs51_nRegs; i >= 0; i--) { - if (bitVectBitValue (rsave, i)) - emitcode ("pop", "%s", mcs51_regWithIdx (i)->dname); + if (bitVectBitValue (rsave, i)) + emitcode ("pop", "%s", mcs51_regWithIdx (i)->dname); } } @@ -1652,14 +1881,14 @@ pushSide (operand * oper, int size) { char *l = aopGet (AOP (oper), offset++, FALSE, TRUE); if (AOP_TYPE (oper) != AOP_REG && - AOP_TYPE (oper) != AOP_DIR && - strcmp (l, "a")) - { - emitcode ("mov", "a,%s", l); - emitcode ("push", "acc"); - } + AOP_TYPE (oper) != AOP_DIR && + strcmp (l, "a")) + { + MOVA (l); + emitcode ("push", "acc"); + } else - emitcode ("push", "%s", l); + emitcode ("push", "%s", l); } } @@ -1673,7 +1902,7 @@ assignResultValue (operand * oper) int size = AOP_SIZE (oper); while (size--) { - aopPut (AOP (oper), fReturn[offset], offset); + aopPut (AOP (oper), fReturn[offset], offset, isOperandVolatile (oper, FALSE)); offset++; } } @@ -1702,7 +1931,7 @@ genXpush (iCode * ic) { char *l = aopGet (AOP (IC_LEFT (ic)), - offset++, FALSE, FALSE); + offset++, FALSE, FALSE); MOVA (l); emitcode ("movx", "@%s,a", r->name); emitcode ("inc", "%s", r->name); @@ -1734,21 +1963,21 @@ genIpush (iCode * ic) /* and the item is spilt then do nothing */ if (OP_SYMBOL (IC_LEFT (ic))->isspilt) - return; + return; aopOp (IC_LEFT (ic), ic, FALSE); size = AOP_SIZE (IC_LEFT (ic)); /* push it on the stack */ while (size--) - { - l = aopGet (AOP (IC_LEFT (ic)), offset++, FALSE, TRUE); - if (*l == '#') - { - MOVA (l); - l = "acc"; - } - emitcode ("push", "%s", l); - } + { + l = aopGet (AOP (IC_LEFT (ic)), offset++, FALSE, TRUE); + if (*l == '#') + { + MOVA (l); + l = "acc"; + } + emitcode ("push", "%s", l); + } return; } @@ -1776,14 +2005,14 @@ genIpush (iCode * ic) { l = aopGet (AOP (IC_LEFT (ic)), offset++, FALSE, TRUE); if (AOP_TYPE (IC_LEFT (ic)) != AOP_REG && - AOP_TYPE (IC_LEFT (ic)) != AOP_DIR && - strcmp (l, "a")) - { - emitcode ("mov", "a,%s", l); - emitcode ("push", "acc"); - } + AOP_TYPE (IC_LEFT (ic)) != AOP_DIR && + strcmp (l, "a")) + { + MOVA (l); + emitcode ("push", "acc"); + } else - emitcode ("push", "%s", l); + emitcode ("push", "%s", l); } freeAsmop (IC_LEFT (ic), NULL, ic, TRUE); @@ -1808,7 +2037,7 @@ genIpop (iCode * ic) offset = (size - 1); while (size--) emitcode ("pop", "%s", aopGet (AOP (IC_LEFT (ic)), offset--, - FALSE, TRUE)); + FALSE, TRUE)); freeAsmop (IC_LEFT (ic), NULL, ic, TRUE); } @@ -1827,55 +2056,55 @@ unsaveRBank (int bank, iCode * ic, bool popPsw) { if (!ic) { - /* Assume r0 is available for use. */ - r = mcs51_regWithIdx (R0_IDX);; - } + /* Assume r0 is available for use. */ + r = mcs51_regWithIdx (R0_IDX);; + } else { - aop = newAsmop (0); - r = getFreePtr (ic, &aop, FALSE); + aop = newAsmop (0); + r = getFreePtr (ic, &aop, FALSE); } - emitcode ("mov", "%s,_spx", r->name); + emitcode ("mov", "%s,_spx", r->name); } - + if (popPsw) { if (options.useXstack) { - emitcode ("movx", "a,@%s", r->name); - emitcode ("mov", "psw,a"); - emitcode ("dec", "%s", r->name); - } + emitcode ("movx", "a,@%s", r->name); + emitcode ("mov", "psw,a"); + emitcode ("dec", "%s", r->name); + } else { - emitcode ("pop", "psw"); + emitcode ("pop", "psw"); } } for (i = (mcs51_nRegs - 1); i >= 0; i--) { if (options.useXstack) - { - emitcode ("movx", "a,@%s", r->name); - emitcode ("mov", "(%s+%d),a", - regs8051[i].base, 8 * bank + regs8051[i].offset); - emitcode ("dec", "%s", r->name); + { + emitcode ("movx", "a,@%s", r->name); + emitcode ("mov", "(%s+%d),a", + regs8051[i].base, 8 * bank + regs8051[i].offset); + emitcode ("dec", "%s", r->name); - } + } else - emitcode ("pop", "(%s+%d)", - regs8051[i].base, 8 * bank + regs8051[i].offset); + emitcode ("pop", "(%s+%d)", + regs8051[i].base, 8 * bank + regs8051[i].offset); } if (options.useXstack) { emitcode ("mov", "_spx,%s", r->name); } - + if (aop) { - freeAsmop (NULL, aop, ic, TRUE); - } + freeAsmop (NULL, aop, ic, TRUE); + } } /*-----------------------------------------------------------------*/ @@ -1892,13 +2121,13 @@ saveRBank (int bank, iCode * ic, bool pushPsw) { if (!ic) { - /* Assume r0 is available for use. */ - r = mcs51_regWithIdx (R0_IDX);; + /* Assume r0 is available for use. */ + r = mcs51_regWithIdx (R0_IDX);; } else { - aop = newAsmop (0); - r = getFreePtr (ic, &aop, FALSE); + aop = newAsmop (0); + r = getFreePtr (ic, &aop, FALSE); } emitcode ("mov", "%s,_spx", r->name); } @@ -1906,30 +2135,30 @@ saveRBank (int bank, iCode * ic, bool pushPsw) for (i = 0; i < mcs51_nRegs; i++) { if (options.useXstack) - { - emitcode ("inc", "%s", r->name); - emitcode ("mov", "a,(%s+%d)", - regs8051[i].base, 8 * bank + regs8051[i].offset); - emitcode ("movx", "@%s,a", r->name); - } + { + emitcode ("inc", "%s", r->name); + emitcode ("mov", "a,(%s+%d)", + regs8051[i].base, 8 * bank + regs8051[i].offset); + emitcode ("movx", "@%s,a", r->name); + } else - emitcode ("push", "(%s+%d)", - regs8051[i].base, 8 * bank + regs8051[i].offset); + emitcode ("push", "(%s+%d)", + regs8051[i].base, 8 * bank + regs8051[i].offset); } if (pushPsw) { if (options.useXstack) - { - emitcode ("mov", "a,psw"); - emitcode ("movx", "@%s,a", r->name); - emitcode ("inc", "%s", r->name); - emitcode ("mov", "_spx,%s", r->name); + { + emitcode ("mov", "a,psw"); + emitcode ("movx", "@%s,a", r->name); + emitcode ("inc", "%s", r->name); + emitcode ("mov", "_spx,%s", r->name); - } + } else { - emitcode ("push", "psw"); + emitcode ("push", "psw"); } emitcode ("mov", "psw,#0x%02x", (bank << 3) & 0x00ff); @@ -1941,41 +2170,41 @@ saveRBank (int bank, iCode * ic, bool pushPsw) } if (ic) - { + { ic->bankSaved = 1; } } /*-----------------------------------------------------------------*/ -/* genSend - gen code for SEND */ +/* genSend - gen code for SEND */ /*-----------------------------------------------------------------*/ static void genSend(set *sendSet) { iCode *sic; int rb1_count = 0 ; - for (sic = setFirstItem (_G.sendSet); sic; - sic = setNextItem (_G.sendSet)) { - int size, offset = 0; - aopOp (IC_LEFT (sic), sic, FALSE); - size = AOP_SIZE (IC_LEFT (sic)); + for (sic = setFirstItem (sendSet); sic; + sic = setNextItem (sendSet)) { + int size, offset = 0; + aopOp (IC_LEFT (sic), sic, FALSE); + size = AOP_SIZE (IC_LEFT (sic)); - if (sic->argreg == 1) { - while (size--) { - char *l = aopGet (AOP (IC_LEFT (sic)), offset, - FALSE, FALSE); - if (strcmp (l, fReturn[offset])) - emitcode ("mov", "%s,%s", fReturn[offset], l); - offset++; - } - rb1_count = 0; - } else { - while (size--) { - emitcode ("mov","b1_%d,%s",rb1_count++, - aopGet (AOP (IC_LEFT (sic)), offset++,FALSE, FALSE)); - } - } - freeAsmop (IC_LEFT (sic), NULL, sic, TRUE); + if (sic->argreg == 1) { + while (size--) { + char *l = aopGet (AOP (IC_LEFT (sic)), offset, + FALSE, FALSE); + if (strcmp (l, fReturn[offset])) + emitcode ("mov", "%s,%s", fReturn[offset], l); + offset++; + } + rb1_count = 0; + } else { + while (size--) { + emitcode ("mov","b1_%d,%s",rb1_count++, + aopGet (AOP (IC_LEFT (sic)), offset++,FALSE, FALSE)); + } + } + freeAsmop (IC_LEFT (sic), NULL, sic, TRUE); } } @@ -1992,14 +2221,14 @@ genCall (iCode * ic) D(emitcode("; genCall","")); dtype = operandType (IC_LEFT (ic)); - /* if send set is not empty the assign */ + /* if send set is not empty then assign */ if (_G.sendSet) { - if (IFFUNC_ISREENT(dtype)) { /* need to reverse the send set */ - genSend(reverseSet(_G.sendSet)); - } else { - genSend(_G.sendSet); - } + if (IFFUNC_ISREENT(dtype)) { /* need to reverse the send set */ + genSend(reverseSet(_G.sendSet)); + } else { + genSend(_G.sendSet); + } _G.sendSet = NULL; } @@ -2012,35 +2241,35 @@ genCall (iCode * ic) (FUNC_REGBANK (currFunc->type) != FUNC_REGBANK (dtype)) && !IFFUNC_ISISR (dtype)) { - swapBanks = TRUE; - } - + swapBanks = TRUE; + } + /* if caller saves & we have not saved then */ if (!ic->regsSaved) saveRegisters (ic); if (swapBanks) { - emitcode ("mov", "psw,#0x%02x", + emitcode ("mov", "psw,#0x%02x", ((FUNC_REGBANK(dtype)) << 3) & 0xff); } /* make the call */ emitcode ("lcall", "%s", (OP_SYMBOL (IC_LEFT (ic))->rname[0] ? - OP_SYMBOL (IC_LEFT (ic))->rname : - OP_SYMBOL (IC_LEFT (ic))->name)); + OP_SYMBOL (IC_LEFT (ic))->rname : + OP_SYMBOL (IC_LEFT (ic))->name)); if (swapBanks) { - emitcode ("mov", "psw,#0x%02x", + emitcode ("mov", "psw,#0x%02x", ((FUNC_REGBANK(currFunc->type)) << 3) & 0xff); } /* if we need assign a result value */ if ((IS_ITEMP (IC_RESULT (ic)) && (OP_SYMBOL (IC_RESULT (ic))->nRegs || - OP_SYMBOL (IC_RESULT (ic))->accuse || - OP_SYMBOL (IC_RESULT (ic))->spildir)) || + OP_SYMBOL (IC_RESULT (ic))->accuse || + OP_SYMBOL (IC_RESULT (ic))->spildir)) || IS_TRUE_SYMOP (IC_RESULT (ic))) { @@ -2059,14 +2288,14 @@ genCall (iCode * ic) { int i; if (ic->parmBytes > 3) - { - emitcode ("mov", "a,%s", spname); - emitcode ("add", "a,#0x%02x", (-ic->parmBytes) & 0xff); - emitcode ("mov", "%s,a", spname); - } + { + 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); + for (i = 0; i < ic->parmBytes; i++) + emitcode ("dec", "%s", spname); } /* if we hade saved some registers then unsave them */ @@ -2125,13 +2354,13 @@ genPcall (iCode * ic) /* if send set is not empty the assign */ if (_G.sendSet) { - genSend(reverseSet(_G.sendSet)); - _G.sendSet = NULL; + genSend(reverseSet(_G.sendSet)); + _G.sendSet = NULL; } if (swapBanks) { - emitcode ("mov", "psw,#0x%02x", + emitcode ("mov", "psw,#0x%02x", ((FUNC_REGBANK(dtype)) << 3) & 0xff); } @@ -2142,14 +2371,14 @@ genPcall (iCode * ic) if (swapBanks) { - emitcode ("mov", "psw,#0x%02x", + emitcode ("mov", "psw,#0x%02x", ((FUNC_REGBANK(currFunc->type)) << 3) & 0xff); } /* if we need assign a result value */ if ((IS_ITEMP (IC_RESULT (ic)) && (OP_SYMBOL (IC_RESULT (ic))->nRegs || - OP_SYMBOL (IC_RESULT (ic))->spildir)) || + OP_SYMBOL (IC_RESULT (ic))->spildir)) || IS_TRUE_SYMOP (IC_RESULT (ic))) { @@ -2168,14 +2397,14 @@ genPcall (iCode * ic) { int i; if (ic->parmBytes > 3) - { - emitcode ("mov", "a,%s", spname); - emitcode ("add", "a,#0x%02x", (-ic->parmBytes) & 0xff); - emitcode ("mov", "%s,a", spname); - } + { + 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); + for (i = 0; i < ic->parmBytes; i++) + emitcode ("dec", "%s", spname); } @@ -2202,7 +2431,7 @@ resultRemat (iCode * ic) { symbol *sym = OP_SYMBOL (IC_RESULT (ic)); if (sym->remat && !POINTER_SET (ic)) - return 1; + return 1; } return 0; @@ -2217,22 +2446,22 @@ resultRemat (iCode * ic) /*-----------------------------------------------------------------*/ /* inExcludeList - return 1 if the string is in exclude Reg list */ /*-----------------------------------------------------------------*/ +static int +regsCmp(void *p1, void *p2) +{ + return (STRCASECMP((char *)p1, (char *)(p2)) == 0); +} + static bool inExcludeList (char *s) { - int i = 0; + const char *p = setFirstItem(options.excludeRegsSet); - if (options.excludeRegs[i] && - STRCASECMP (options.excludeRegs[i], "none") == 0) + if (p == NULL || STRCASECMP(p, "none") == 0) return FALSE; - for (i = 0; options.excludeRegs[i]; i++) - { - if (options.excludeRegs[i] && - STRCASECMP (s, options.excludeRegs[i]) == 0) - return TRUE; - } - return FALSE; + + return isinSetWith(options.excludeRegsSet, s, regsCmp); } /*-----------------------------------------------------------------*/ @@ -2241,19 +2470,23 @@ inExcludeList (char *s) static void genFunction (iCode * ic) { - symbol *sym; + symbol *sym = OP_SYMBOL (IC_LEFT (ic)); sym_link *ftype; bool switchedPSW = FALSE; int calleesaves_saved_register = -1; + int stackAdjust = sym->stack; + int accIsFree = sym->recvSize < 4; + iCode * ric = (ic->next && ic->next->op == RECEIVE) ? ic->next : NULL; _G.nRegsSaved = 0; /* create the function header */ emitcode (";", "-----------------------------------------"); - emitcode (";", " function %s", (sym = OP_SYMBOL (IC_LEFT (ic)))->name); + emitcode (";", " function %s", sym->name); emitcode (";", "-----------------------------------------"); emitcode ("", "%s:", sym->rname); ftype = operandType (IC_LEFT (ic)); + _G.currentFunc = sym; if (IFFUNC_ISNAKED(ftype)) { @@ -2261,10 +2494,6 @@ genFunction (iCode * ic) return; } - /* if critical function then turn interrupts off */ - if (IFFUNC_ISCRITICAL (ftype)) - emitcode ("clr", "ea"); - /* here we need to generate the equates for the register bank if required */ if (FUNC_REGBANK (ftype) != rbank) @@ -2273,17 +2502,17 @@ genFunction (iCode * ic) rbank = FUNC_REGBANK (ftype); for (i = 0; i < mcs51_nRegs; i++) - { - if (strcmp (regs8051[i].base, "0") == 0) - emitcode ("", "%s = 0x%02x", - regs8051[i].dname, - 8 * rbank + regs8051[i].offset); - else - emitcode ("", "%s = %s + 0x%02x", - regs8051[i].dname, - regs8051[i].base, - 8 * rbank + regs8051[i].offset); - } + { + if (strcmp (regs8051[i].base, "0") == 0) + emitcode ("", "%s = 0x%02x", + regs8051[i].dname, + 8 * rbank + regs8051[i].offset); + else + emitcode ("", "%s = %s + 0x%02x", + regs8051[i].dname, + regs8051[i].base, + 8 * rbank + regs8051[i].offset); + } } /* if this is an interrupt service routine then @@ -2292,256 +2521,340 @@ genFunction (iCode * ic) { if (!inExcludeList ("acc")) - emitcode ("push", "acc"); + emitcode ("push", "acc"); if (!inExcludeList ("b")) - emitcode ("push", "b"); + emitcode ("push", "b"); if (!inExcludeList ("dpl")) - emitcode ("push", "dpl"); + emitcode ("push", "dpl"); if (!inExcludeList ("dph")) - emitcode ("push", "dph"); + emitcode ("push", "dph"); /* if this isr has no bank i.e. is going to run with bank 0 , then we need to save more registers :-) */ if (!FUNC_REGBANK (sym->type)) - { - - /* if this function does not call any other - function then we can be economical and - save only those registers that are used */ - if (!IFFUNC_HASFCALL(sym->type)) - { - int i; - - /* if any registers used */ - if (sym->regsUsed) - { - /* save the registers used */ - for (i = 0; i < sym->regsUsed->size; i++) - { - if (bitVectBitValue (sym->regsUsed, i) || - (mcs51_ptrRegReq && (i == R0_IDX || i == R1_IDX))) - emitcode ("push", "%s", mcs51_regWithIdx (i)->dname); - } - } - - } - else - { - - /* this function has a function call cannot - determines register usage so we will have to push the - entire bank */ - saveRBank (0, ic, FALSE); - if (options.parms_in_bank1) { - int i; - for (i=0; i < 8 ; i++ ) { - emitcode ("push","%s",rb1regs[i]); - } - } - } - } - else - { - /* This ISR uses a non-zero bank. - * - * We assume that the bank is available for our - * exclusive use. - * - * However, if this ISR calls a function which uses some - * other bank, we must save that bank entirely. - */ - unsigned long banksToSave = 0; - - if (IFFUNC_HASFCALL(sym->type)) - { + { + + /* if this function does not call any other + function then we can be economical and + save only those registers that are used */ + if (!IFFUNC_HASFCALL(sym->type)) + { + int i; + + /* if any registers used */ + if (sym->regsUsed) + { + /* save the registers used */ + for (i = 0; i < sym->regsUsed->size; i++) + { + if (bitVectBitValue (sym->regsUsed, i)) + emitcode ("push", "%s", mcs51_regWithIdx (i)->dname); + } + } + } + else + { + + /* this function has a function call. We cannot + determines register usage so we will have to push the + entire bank */ + saveRBank (0, ic, FALSE); + if (options.parms_in_bank1) { + int i; + for (i=0; i < 8 ; i++ ) { + emitcode ("push","%s",rb1regs[i]); + } + } + } + } + else + { + /* This ISR uses a non-zero bank. + * + * We assume that the bank is available for our + * exclusive use. + * + * However, if this ISR calls a function which uses some + * other bank, we must save that bank entirely. + */ + unsigned long banksToSave = 0; + + if (IFFUNC_HASFCALL(sym->type)) + { #define MAX_REGISTER_BANKS 4 - iCode *i; - int ix; - - for (i = ic; i; i = i->next) - { - if (i->op == ENDFUNCTION) - { - /* we got to the end OK. */ - break; - } - - if (i->op == CALL) - { - sym_link *dtype; - - dtype = operandType (IC_LEFT(i)); - if (dtype - && FUNC_REGBANK(dtype) != FUNC_REGBANK(sym->type)) - { - /* Mark this bank for saving. */ - if (FUNC_REGBANK(dtype) >= MAX_REGISTER_BANKS) - { - werror(E_NO_SUCH_BANK, FUNC_REGBANK(dtype)); - } - else - { - banksToSave |= (1 << FUNC_REGBANK(dtype)); - } - - /* And note that we don't need to do it in - * genCall. - */ - i->bankSaved = 1; - } - } - if (i->op == PCALL) - { - /* This is a mess; we have no idea what - * register bank the called function might - * use. - * - * The only thing I can think of to do is - * throw a warning and hope. - */ - werror(W_FUNCPTR_IN_USING_ISR); - } - } - - if (banksToSave && options.useXstack) - { - /* Since we aren't passing it an ic, - * saveRBank will assume r0 is available to abuse. - * - * So switch to our (trashable) bank now, so - * the caller's R0 isn't trashed. - */ - emitcode ("push", "psw"); - emitcode ("mov", "psw,#0x%02x", - (FUNC_REGBANK (sym->type) << 3) & 0x00ff); - switchedPSW = TRUE; - } - - for (ix = 0; ix < MAX_REGISTER_BANKS; ix++) - { - if (banksToSave & (1 << ix)) - { - saveRBank(ix, NULL, FALSE); - } - } - } - // jwk: this needs a closer look - SPEC_ISR_SAVED_BANKS(currFunc->etype) = banksToSave; - } + iCode *i; + int ix; + + for (i = ic; i; i = i->next) + { + if (i->op == ENDFUNCTION) + { + /* we got to the end OK. */ + break; + } + + if (i->op == CALL) + { + sym_link *dtype; + + dtype = operandType (IC_LEFT(i)); + if (dtype + && FUNC_REGBANK(dtype) != FUNC_REGBANK(sym->type)) + { + /* Mark this bank for saving. */ + if (FUNC_REGBANK(dtype) >= MAX_REGISTER_BANKS) + { + werror(E_NO_SUCH_BANK, FUNC_REGBANK(dtype)); + } + else + { + banksToSave |= (1 << FUNC_REGBANK(dtype)); + } + + /* And note that we don't need to do it in + * genCall. + */ + i->bankSaved = 1; + } + } + if (i->op == PCALL) + { + /* This is a mess; we have no idea what + * register bank the called function might + * use. + * + * The only thing I can think of to do is + * throw a warning and hope. + */ + werror(W_FUNCPTR_IN_USING_ISR); + } + } + + if (banksToSave && options.useXstack) + { + /* Since we aren't passing it an ic, + * saveRBank will assume r0 is available to abuse. + * + * So switch to our (trashable) bank now, so + * the caller's R0 isn't trashed. + */ + emitcode ("push", "psw"); + emitcode ("mov", "psw,#0x%02x", + (FUNC_REGBANK (sym->type) << 3) & 0x00ff); + switchedPSW = TRUE; + } + + for (ix = 0; ix < MAX_REGISTER_BANKS; ix++) + { + if (banksToSave & (1 << ix)) + { + saveRBank(ix, NULL, FALSE); + } + } + } + // TODO: this needs a closer look + SPEC_ISR_SAVED_BANKS(currFunc->etype) = banksToSave; + } + + /* Set the register bank to the desired value if nothing else */ + /* has done so yet. */ + if (!switchedPSW) + { + emitcode ("push", "psw"); + emitcode ("mov", "psw,#0x%02x", (FUNC_REGBANK (sym->type) << 3) & 0x00ff); + } } else { + /* This is a non-ISR function. The caller has already switched register */ + /* banks, if necessary, so just handle the callee-saves option. */ + /* if callee-save to be used for this function then save the registers being used in this function */ if (IFFUNC_CALLEESAVES(sym->type)) - { - int i; - - /* if any registers used */ - if (sym->regsUsed) - { - /* save the registers used */ - for (i = 0; i < sym->regsUsed->size; i++) - { - if (bitVectBitValue (sym->regsUsed, i) || - (mcs51_ptrRegReq && (i == R0_IDX || i == R1_IDX))) - { - /* remember one saved register for later usage */ - if (calleesaves_saved_register < 0) - calleesaves_saved_register = i; - emitcode ("push", "%s", mcs51_regWithIdx (i)->dname); - _G.nRegsSaved++; - } - } - } - } + { + int i; + + /* if any registers used */ + if (sym->regsUsed) + { + /* save the registers used */ + for (i = 0; i < sym->regsUsed->size; i++) + { + if (bitVectBitValue (sym->regsUsed, i)) + { + /* remember one saved register for later usage */ + if (calleesaves_saved_register < 0) + calleesaves_saved_register = i; + emitcode ("push", "%s", mcs51_regWithIdx (i)->dname); + _G.nRegsSaved++; + } + } + } + } } - /* set the register bank to the desired value */ - if (( /* FUNC_REGBANK (sym->type) || */ IFFUNC_ISISR (sym->type)) - && !switchedPSW) - { - emitcode ("push", "psw"); - emitcode ("mov", "psw,#0x%02x", (FUNC_REGBANK (sym->type) << 3) & 0x00ff); - } if (IFFUNC_ISREENT (sym->type) || options.stackAuto) { if (options.useXstack) - { - emitcode ("mov", "r0,%s", spname); - emitcode ("mov", "a,_bp"); - emitcode ("movx", "@r0,a"); - emitcode ("inc", "%s", spname); - } + { + if (!accIsFree) + emitcode ("push", "acc"); + emitcode ("mov", "r0,%s", spname); + emitcode ("mov", "a,_bp"); + emitcode ("movx", "@r0,a"); + emitcode ("inc", "%s", spname); + if (!accIsFree) + emitcode ("pop", "acc"); + } else - { - /* set up the stack */ - emitcode ("push", "_bp"); /* save the callers stack */ - } + { + /* set up the stack */ + emitcode ("push", "_bp"); /* save the callers stack */ + } emitcode ("mov", "_bp,%s", spname); } + /* For some cases it is worthwhile to perform a RECEIVE iCode */ + /* before setting up the stack frame completely. */ + if (ric && ric->argreg == 1 && IC_RESULT (ric)) + { + symbol * rsym = OP_SYMBOL (IC_RESULT (ric)); + + if (rsym->isitmp) + { + if (rsym && rsym->regType == REG_CND) + rsym = NULL; + if (rsym && (rsym->accuse || rsym->ruonly)) + rsym = NULL; + if (rsym && (rsym->isspilt || rsym->nRegs == 0) && rsym->usl.spillLoc) + rsym = rsym->usl.spillLoc; + } + + /* If the RECEIVE operand immediately spills to the first entry on the */ + /* stack, we can push it directly (since sp = _bp + 1 at this point) */ + /* rather than the usual @r0/r1 machinations. */ + if (!options.useXstack && rsym && rsym->onStack && rsym->stack == 1) + { + int ofs; + + _G.current_iCode = ric; + D(emitcode ("; genReceive","")); + for (ofs=0; ofs < sym->recvSize; ofs++) + { + if (!strcmp (fReturn[ofs], "a")) + emitcode ("push", "acc"); + else + emitcode ("push", fReturn[ofs]); + } + stackAdjust -= sym->recvSize; + if (stackAdjust<0) + { + assert (stackAdjust>=0); + stackAdjust = 0; + } + _G.current_iCode = ic; + ric->generated = 1; + accIsFree = 1; + } + /* If the RECEIVE operand is 4 registers, we can do the moves now */ + /* to free up the accumulator. */ + else if (rsym && rsym->nRegs && sym->recvSize == 4) + { + int ofs; + + _G.current_iCode = ric; + D(emitcode ("; genReceive","")); + for (ofs=0; ofs < sym->recvSize; ofs++) + { + emitcode ("mov", "%s,%s", rsym->regs[ofs]->name, fReturn[ofs]); + } + _G.current_iCode = ic; + ric->generated = 1; + accIsFree = 1; + } + } + /* adjust the stack for the function */ - if (sym->stack) + if (stackAdjust) { - int i = sym->stack; + int i = stackAdjust; if (i > 256) - werror (W_STACK_OVERFLOW, sym->name); + werror (W_STACK_OVERFLOW, sym->name); - if (i > 3 && sym->recvSize < 4) - { + if (i > 3 && accIsFree) + { - emitcode ("mov", "a,sp"); - emitcode ("add", "a,#0x%02x", ((char) sym->stack & 0xff)); - emitcode ("mov", "sp,a"); + emitcode ("mov", "a,sp"); + emitcode ("add", "a,#0x%02x", ((char) sym->stack & 0xff)); + emitcode ("mov", "sp,a"); - } + } else if (i > 5) { - if (IFFUNC_CALLEESAVES(sym->type)) - { - /* if it's a callee-saves function we need a saved register */ - if (calleesaves_saved_register >= 0) - { - emitcode ("mov", "%s,a", mcs51_regWithIdx (calleesaves_saved_register)->dname); - emitcode ("mov", "a,sp"); - emitcode ("add", "a,#0x%02x", ((char) sym->stack & 0xff)); - emitcode ("mov", "sp,a"); - emitcode ("mov", "a,%s", mcs51_regWithIdx (calleesaves_saved_register)->dname); - } - else - /* do it the hard way */ - while (i--) - emitcode ("inc", "sp"); - } - else - { - /* not callee-saves, we can clobber r0 */ - emitcode ("mov", "r0,a"); - emitcode ("mov", "a,sp"); - emitcode ("add", "a,#0x%02x", ((char) sym->stack & 0xff)); - emitcode ("mov", "sp,a"); - emitcode ("mov", "a,r0"); - } - } + /* The accumulator is not free, so we will need another register */ + /* to clobber. No need to worry about a possible conflict with */ + /* the above early RECEIVE optimizations since they would have */ + /* freed the accumulator if they were generated. */ + + if (IFFUNC_CALLEESAVES(sym->type)) + { + /* if it's a callee-saves function we need a saved register */ + if (calleesaves_saved_register >= 0) + { + emitcode ("mov", "%s,a", mcs51_regWithIdx (calleesaves_saved_register)->dname); + emitcode ("mov", "a,sp"); + emitcode ("add", "a,#0x%02x", ((char) sym->stack & 0xff)); + emitcode ("mov", "sp,a"); + emitcode ("mov", "a,%s", mcs51_regWithIdx (calleesaves_saved_register)->dname); + } + else + /* do it the hard way */ + while (i--) + emitcode ("inc", "sp"); + } + else + { + /* not callee-saves, we can clobber r0 */ + emitcode ("mov", "r0,a"); + emitcode ("mov", "a,sp"); + emitcode ("add", "a,#0x%02x", ((char) sym->stack & 0xff)); + emitcode ("mov", "sp,a"); + emitcode ("mov", "a,r0"); + } + } else - while (i--) - emitcode ("inc", "sp"); + while (i--) + emitcode ("inc", "sp"); } if (sym->xstack) { + if (!accIsFree) + emitcode ("push", "acc"); emitcode ("mov", "a,_spx"); emitcode ("add", "a,#0x%02x", ((char) sym->xstack & 0xff)); emitcode ("mov", "_spx,a"); + if (!accIsFree) + emitcode ("pop", "acc"); } + /* if critical function then turn interrupts off */ + if (IFFUNC_ISCRITICAL (ftype)) + { + symbol *tlbl = newiTempLabel (NULL); + emitcode ("setb", "c"); + emitcode ("jbc", "ea,%05d$", (tlbl->key + 100)); /* atomic test & clear */ + emitcode ("clr", "c"); + emitcode ("", "%05d$:", (tlbl->key + 100)); + emitcode ("push", "psw"); /* save old ea via c in psw */ + } } /*-----------------------------------------------------------------*/ @@ -2551,13 +2864,27 @@ static void genEndFunction (iCode * ic) { symbol *sym = OP_SYMBOL (IC_LEFT (ic)); + lineNode *lnp = lineCurr; + bitVect *regsUsed; + bitVect *regsUsedPrologue; + bitVect *regsUnneeded; + int idx; + _G.currentFunc = NULL; if (IFFUNC_ISNAKED(sym->type)) { emitcode(";", "naked function: no epilogue."); + if (options.debug && currFunc) + debugFile->writeEndFunction (currFunc, ic, 0); return; } + if (IFFUNC_ISCRITICAL (sym->type)) + { + emitcode ("pop", "psw"); /* restore ea via c in psw */ + emitcode ("mov", "ea,c"); + } + if (IFFUNC_ISREENT (sym->type) || options.stackAuto) { emitcode ("mov", "%s,_bp", spname); @@ -2577,16 +2904,16 @@ genEndFunction (iCode * ic) if ((IFFUNC_ISREENT (sym->type) || options.stackAuto)) { if (options.useXstack) - { - emitcode ("mov", "r0,%s", spname); - emitcode ("movx", "a,@r0"); - emitcode ("mov", "_bp,a"); - emitcode ("dec", "%s", spname); - } + { + emitcode ("mov", "r0,%s", spname); + emitcode ("movx", "a,@r0"); + emitcode ("mov", "_bp,a"); + emitcode ("dec", "%s", spname); + } else - { - emitcode ("pop", "_bp"); - } + { + emitcode ("pop", "_bp"); + } } /* restore the register bank */ @@ -2610,137 +2937,210 @@ genEndFunction (iCode * ic) run with bank 0 , then we need to save more registers :-) */ if (!FUNC_REGBANK (sym->type)) - { - /* if this function does not call any other - function then we can be economical and - save only those registers that are used */ - if (!IFFUNC_HASFCALL(sym->type)) - { - int i; - - /* if any registers used */ - if (sym->regsUsed) - { - /* save the registers used */ - for (i = sym->regsUsed->size; i >= 0; i--) - { - if (bitVectBitValue (sym->regsUsed, i) || - (mcs51_ptrRegReq && (i == R0_IDX || i == R1_IDX))) - emitcode ("pop", "%s", mcs51_regWithIdx (i)->dname); - } - } - - } - else - { - if (options.parms_in_bank1) { - int i; - for (i = 7 ; i >= 0 ; i-- ) { - emitcode ("pop","%s",rb1regs[i]); - } - } - /* this function has a function call cannot - determines register usage so we will have to pop the - entire bank */ - unsaveRBank (0, ic, FALSE); - } - } - else - { - /* This ISR uses a non-zero bank. - * - * Restore any register banks saved by genFunction - * in reverse order. - */ - // jwk: this needs a closer look - unsigned savedBanks = SPEC_ISR_SAVED_BANKS(currFunc->etype); - int ix; - - for (ix = MAX_REGISTER_BANKS - 1; ix >= 0; ix--) - { - if (savedBanks & (1 << ix)) - { - unsaveRBank(ix, NULL, FALSE); - } - } - - if (options.useXstack) - { - /* Restore bank AFTER calling unsaveRBank, - * since it can trash r0. - */ - emitcode ("pop", "psw"); - } - } + { + /* if this function does not call any other + function then we can be economical and + save only those registers that are used */ + if (!IFFUNC_HASFCALL(sym->type)) + { + int i; + + /* if any registers used */ + if (sym->regsUsed) + { + /* save the registers used */ + for (i = sym->regsUsed->size; i >= 0; i--) + { + if (bitVectBitValue (sym->regsUsed, i)) + emitcode ("pop", "%s", mcs51_regWithIdx (i)->dname); + } + } + } + else + { + if (options.parms_in_bank1) { + int i; + for (i = 7 ; i >= 0 ; i-- ) { + emitcode ("pop","%s",rb1regs[i]); + } + } + /* this function has a function call cannot + determines register usage so we will have to pop the + entire bank */ + unsaveRBank (0, ic, FALSE); + } + } + else + { + /* This ISR uses a non-zero bank. + * + * Restore any register banks saved by genFunction + * in reverse order. + */ + unsigned savedBanks = SPEC_ISR_SAVED_BANKS(currFunc->etype); + int ix; + + for (ix = MAX_REGISTER_BANKS - 1; ix >= 0; ix--) + { + if (savedBanks & (1 << ix)) + { + unsaveRBank(ix, NULL, FALSE); + } + } + + if (options.useXstack) + { + /* Restore bank AFTER calling unsaveRBank, + * since it can trash r0. + */ + emitcode ("pop", "psw"); + } + } if (!inExcludeList ("dph")) - emitcode ("pop", "dph"); + emitcode ("pop", "dph"); if (!inExcludeList ("dpl")) - emitcode ("pop", "dpl"); + emitcode ("pop", "dpl"); if (!inExcludeList ("b")) - emitcode ("pop", "b"); + emitcode ("pop", "b"); if (!inExcludeList ("acc")) - emitcode ("pop", "acc"); - - if (IFFUNC_ISCRITICAL (sym->type)) - emitcode ("setb", "ea"); + emitcode ("pop", "acc"); /* if debug then send end of function */ if (options.debug && currFunc) - { - _G.debugLine = 1; - emitcode ("", "C$%s$%d$%d$%d ==.", - FileBaseName (ic->filename), currFunc->lastLine, - ic->level, ic->block); - if (IS_STATIC (currFunc->etype)) - emitcode ("", "XF%s$%s$0$0 ==.", moduleName, currFunc->name); - else - emitcode ("", "XG$%s$0$0 ==.", currFunc->name); - _G.debugLine = 0; - } + { + debugFile->writeEndFunction (currFunc, ic, 1); + } emitcode ("reti", ""); } else { - if (IFFUNC_ISCRITICAL (sym->type)) - emitcode ("setb", "ea"); - if (IFFUNC_CALLEESAVES(sym->type)) - { - int i; - - /* if any registers used */ - if (sym->regsUsed) - { - /* save the registers used */ - for (i = sym->regsUsed->size; i >= 0; i--) - { - if (bitVectBitValue (sym->regsUsed, i) || - (mcs51_ptrRegReq && (i == R0_IDX || i == R1_IDX))) - emitcode ("pop", "%s", mcs51_regWithIdx (i)->dname); - } - } - - } + { + int i; + + /* if any registers used */ + if (sym->regsUsed) + { + /* save the registers used */ + for (i = sym->regsUsed->size; i >= 0; i--) + { + if (bitVectBitValue (sym->regsUsed, i) || + (mcs51_ptrRegReq && (i == R0_IDX || i == R1_IDX))) + emitcode ("pop", "%s", mcs51_regWithIdx (i)->dname); + } + } + else if (mcs51_ptrRegReq) + { + emitcode ("pop", "%s", mcs51_regWithIdx (R1_IDX)->dname); + emitcode ("pop", "%s", mcs51_regWithIdx (R0_IDX)->dname); + } + + } /* if debug then send end of function */ if (options.debug && currFunc) - { - _G.debugLine = 1; - emitcode ("", "C$%s$%d$%d$%d ==.", - FileBaseName (ic->filename), currFunc->lastLine, - ic->level, ic->block); - if (IS_STATIC (currFunc->etype)) - emitcode ("", "XF%s$%s$0$0 ==.", moduleName, currFunc->name); - else - emitcode ("", "XG$%s$0$0 ==.", currFunc->name); - _G.debugLine = 0; - } + { + debugFile->writeEndFunction (currFunc, ic, 1); + } emitcode ("ret", ""); } + if (!port->peep.getRegsRead || !port->peep.getRegsWritten || options.nopeep) + return; + + /* If this was an interrupt handler using bank 0 that called another */ + /* function, then all registers must be saved; nothing to optimized. */ + if (IFFUNC_ISISR (sym->type) && IFFUNC_HASFCALL(sym->type) + && !FUNC_REGBANK(sym->type)) + return; + + /* There are no push/pops to optimize if not callee-saves or ISR */ + if (!(FUNC_CALLEESAVES (sym->type) || FUNC_ISISR (sym->type))) + return; + + /* If there were stack parameters, we cannot optimize without also */ + /* fixing all of the stack offsets; this is too dificult to consider. */ + if (FUNC_HASSTACKPARM(sym->type)) + return; + + /* Compute the registers actually used */ + regsUsed = newBitVect (mcs51_nRegs); + regsUsedPrologue = newBitVect (mcs51_nRegs); + while (lnp) + { + if (lnp->ic && lnp->ic->op == FUNCTION) + regsUsedPrologue = bitVectUnion (regsUsedPrologue, port->peep.getRegsWritten(lnp)); + else + regsUsed = bitVectUnion (regsUsed, port->peep.getRegsWritten(lnp)); + + if (lnp->ic && lnp->ic->op == FUNCTION && lnp->prev + && lnp->prev->ic && lnp->prev->ic->op == ENDFUNCTION) + break; + if (!lnp->prev) + break; + lnp = lnp->prev; + } + + if (bitVectBitValue (regsUsedPrologue, CND_IDX) + && !bitVectBitValue (regsUsed, CND_IDX)) + { + regsUsed = bitVectUnion (regsUsed, regsUsedPrologue); + if (IFFUNC_ISISR (sym->type) && !FUNC_REGBANK (sym->type) + && !sym->stack && !FUNC_ISCRITICAL (sym->type)) + bitVectUnSetBit (regsUsed, CND_IDX); + } + else + regsUsed = bitVectUnion (regsUsed, regsUsedPrologue); + + /* If this was an interrupt handler that called another function */ + /* function, then assume A, B, DPH, & DPL may be modified by it. */ + if (IFFUNC_ISISR (sym->type) && IFFUNC_HASFCALL(sym->type)) + { + regsUsed = bitVectSetBit (regsUsed, DPL_IDX); + regsUsed = bitVectSetBit (regsUsed, DPH_IDX); + regsUsed = bitVectSetBit (regsUsed, B_IDX); + regsUsed = bitVectSetBit (regsUsed, A_IDX); + regsUsed = bitVectSetBit (regsUsed, CND_IDX); + } + + /* Remove the unneeded push/pops */ + regsUnneeded = newBitVect (mcs51_nRegs); + while (lnp) + { + if (lnp->ic && (lnp->ic->op == FUNCTION || lnp->ic->op == ENDFUNCTION)) + { + if (!strncmp(lnp->line, "push", 4)) + { + idx = bitVectFirstBit (port->peep.getRegsRead(lnp)); + if (idx>=0 && !bitVectBitValue (regsUsed, idx)) + { + connectLine (lnp->prev, lnp->next); + regsUnneeded = bitVectSetBit (regsUnneeded, idx); + } + } + if (!strncmp(lnp->line, "pop", 3) || !strncmp(lnp->line, "mov", 3)) + { + idx = bitVectFirstBit (port->peep.getRegsWritten(lnp)); + if (idx>=0 && !bitVectBitValue (regsUsed, idx)) + { + connectLine (lnp->prev, lnp->next); + regsUnneeded = bitVectSetBit (regsUnneeded, idx); + } + } + } + lnp = lnp->next; + } + + for (idx = 0; idx < regsUnneeded->size; idx++) + if (bitVectBitValue (regsUnneeded, idx)) + emitcode ("", ";\teliminated unneeded push/pop %s", mcs51_regWithIdx (idx)->dname); + + freeBitVect (regsUnneeded); + freeBitVect (regsUsed); + freeBitVect (regsUsedPrologue); } /*-----------------------------------------------------------------*/ @@ -2767,32 +3167,32 @@ genRet (iCode * ic) { char *l; if (AOP_TYPE (IC_LEFT (ic)) == AOP_DPTR) - { - /* #NOCHANGE */ - l = aopGet (AOP (IC_LEFT (ic)), offset++, - FALSE, TRUE); - emitcode ("push", "%s", l); - pushed++; - } + { + /* #NOCHANGE */ + l = aopGet (AOP (IC_LEFT (ic)), offset++, + FALSE, TRUE); + emitcode ("push", "%s", l); + pushed++; + } else - { - l = aopGet (AOP (IC_LEFT (ic)), offset, - FALSE, FALSE); - if (strcmp (fReturn[offset], l)) - emitcode ("mov", "%s,%s", fReturn[offset++], l); - } + { + l = aopGet (AOP (IC_LEFT (ic)), offset, + FALSE, FALSE); + if (strcmp (fReturn[offset], l)) + emitcode ("mov", "%s,%s", fReturn[offset++], l); + } } if (pushed) { while (pushed) - { - pushed--; - if (strcmp (fReturn[pushed], "a")) - emitcode ("pop", fReturn[pushed]); - else - emitcode ("pop", "acc"); - } + { + pushed--; + if (strcmp (fReturn[pushed], "a")) + emitcode ("pop", fReturn[pushed]); + else + emitcode ("pop", "acc"); + } } freeAsmop (IC_LEFT (ic), NULL, ic, TRUE); @@ -2800,7 +3200,7 @@ 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)) + IC_LABEL (ic->next) == returnLabel)) emitcode ("ljmp", "%05d$", (returnLabel->key + 100)); @@ -2845,16 +3245,16 @@ findLabelBackwards (iCode * ic, int key) count++; /* If we have any pushes or pops, we cannot predict the distance. - I don't like this at all, this should be dealt with in the - back-end */ + I don't like this at all, this should be dealt with in the + back-end */ if (ic->op == IPUSH || ic->op == IPOP) { - return 0; + return 0; } if (ic->op == LABEL && IC_LABEL (ic)->key == key) - { - return count; - } + { + return count; + } } return 0; @@ -2882,9 +3282,9 @@ genPlusIncr (iCode * ic) D(emitcode ("; genPlusIncr","")); - /* if increment 16 bits in register */ - if (AOP_TYPE(IC_LEFT(ic)) == AOP_REG && - sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))) && + /* if increment >=16 bits in register or direct space */ + if ((AOP_TYPE(IC_LEFT(ic)) == AOP_REG || AOP_TYPE(IC_LEFT(ic)) == AOP_DIR ) && + sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))) && (size > 1) && (icount == 1)) { @@ -2897,67 +3297,67 @@ genPlusIncr (iCode * ic) * jumps straight to that target. */ if (ic->next && ic->next->op == GOTO - && (labelRange = findLabelBackwards (ic, IC_LABEL (ic->next)->key)) != 0 - && labelRange <= 10) - { - emitcode (";", "tail increment optimized"); - tlbl = IC_LABEL (ic->next); - emitTlbl = 0; - } + && (labelRange = findLabelBackwards (ic, IC_LABEL (ic->next)->key)) != 0 + && labelRange <= 10) + { + emitcode (";", "tail increment optimized"); + tlbl = IC_LABEL (ic->next); + emitTlbl = 0; + } else - { - tlbl = newiTempLabel (NULL); - emitTlbl = 1; - } + { + tlbl = newiTempLabel (NULL); + emitTlbl = 1; + } emitcode ("inc", "%s", aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE)); if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG || - IS_AOP_PREG (IC_RESULT (ic))) - emitcode ("cjne", "%s,#0x00,%05d$", - aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE), - tlbl->key + 100); + IS_AOP_PREG (IC_RESULT (ic))) + emitcode ("cjne", "%s,#0x00,%05d$", + aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE), + tlbl->key + 100); else - { - emitcode ("clr", "a"); - emitcode ("cjne", "a,%s,%05d$", - aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE), - tlbl->key + 100); - } + { + emitcode ("clr", "a"); + emitcode ("cjne", "a,%s,%05d$", + aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE), + tlbl->key + 100); + } emitcode ("inc", "%s", aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE)); if (size > 2) - { - if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG || - IS_AOP_PREG (IC_RESULT (ic))) - emitcode ("cjne", "%s,#0x00,%05d$", - aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE), - tlbl->key + 100); - else - emitcode ("cjne", "a,%s,%05d$", - aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE), - tlbl->key + 100); - - emitcode ("inc", "%s", aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE)); - } + { + if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG || + IS_AOP_PREG (IC_RESULT (ic))) + emitcode ("cjne", "%s,#0x00,%05d$", + aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE), + tlbl->key + 100); + else + emitcode ("cjne", "a,%s,%05d$", + aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE), + tlbl->key + 100); + + emitcode ("inc", "%s", aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE)); + } if (size > 3) - { - if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG || - IS_AOP_PREG (IC_RESULT (ic))) - emitcode ("cjne", "%s,#0x00,%05d$", - aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE), - tlbl->key + 100); - else - { - emitcode ("cjne", "a,%s,%05d$", - aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE), - tlbl->key + 100); - } - emitcode ("inc", "%s", aopGet (AOP (IC_RESULT (ic)), MSB32, FALSE, FALSE)); - } + { + if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG || + IS_AOP_PREG (IC_RESULT (ic))) + emitcode ("cjne", "%s,#0x00,%05d$", + aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE), + tlbl->key + 100); + else + { + emitcode ("cjne", "a,%s,%05d$", + aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE), + tlbl->key + 100); + } + emitcode ("inc", "%s", aopGet (AOP (IC_RESULT (ic)), MSB32, FALSE, FALSE)); + } if (emitTlbl) - { - emitcode ("", "%05d$:", tlbl->key + 100); - } + { + emitcode ("", "%05d$:", tlbl->key + 100); + } return TRUE; } @@ -2973,17 +3373,17 @@ genPlusIncr (iCode * ic) { if (icount > 3) - { - MOVA (aopGet (AOP (IC_LEFT (ic)), 0, FALSE, FALSE)); - emitcode ("add", "a,#0x%02x", ((char) icount) & 0xff); - aopPut (AOP (IC_RESULT (ic)), "a", 0); - } + { + MOVA (aopGet (AOP (IC_LEFT (ic)), 0, FALSE, FALSE)); + emitcode ("add", "a,#0x%02x", ((char) icount) & 0xff); + aopPut (AOP (IC_RESULT (ic)), "a", 0, isOperandVolatile (IC_RESULT (ic), FALSE)); + } else - { + { - while (icount--) - emitcode ("inc", "%s", aopGet (AOP (IC_LEFT (ic)), 0, FALSE, FALSE)); - } + while (icount--) + emitcode ("inc", "%s", aopGet (AOP (IC_LEFT (ic)), 0, FALSE, FALSE)); + } return TRUE; } @@ -3001,7 +3401,7 @@ outBitAcc (operand * result) /* if the result is a bit */ if (AOP_TYPE (result) == AOP_CRY) { - aopPut (AOP (result), "a", 0); + aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE)); } else { @@ -3053,15 +3453,17 @@ adjustArithmeticResult (iCode * ic) AOP_SIZE (IC_LEFT (ic)) == 3 && !sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic)))) aopPut (AOP (IC_RESULT (ic)), - aopGet (AOP (IC_LEFT (ic)), 2, FALSE, FALSE), - 2); + aopGet (AOP (IC_LEFT (ic)), 2, FALSE, FALSE), + 2, + isOperandVolatile (IC_RESULT (ic), FALSE)); if (AOP_SIZE (IC_RESULT (ic)) == 3 && AOP_SIZE (IC_RIGHT (ic)) == 3 && !sameRegs (AOP (IC_RESULT (ic)), AOP (IC_RIGHT (ic)))) aopPut (AOP (IC_RESULT (ic)), - aopGet (AOP (IC_RIGHT (ic)), 2, FALSE, FALSE), - 2); + aopGet (AOP (IC_RIGHT (ic)), 2, FALSE, FALSE), + 2, + isOperandVolatile (IC_RESULT (ic), FALSE)); if (AOP_SIZE (IC_RESULT (ic)) == 3 && AOP_SIZE (IC_LEFT (ic)) < 3 && @@ -3071,7 +3473,7 @@ adjustArithmeticResult (iCode * ic) { char buffer[5]; sprintf (buffer, "#%d", pointerCode (getSpec (operandType (IC_LEFT (ic))))); - aopPut (AOP (IC_RESULT (ic)), buffer, 2); + aopPut (AOP (IC_RESULT (ic)), buffer, 2, isOperandVolatile (IC_RESULT (ic), FALSE)); } } #else @@ -3087,8 +3489,9 @@ adjustArithmeticResult (iCode * ic) !sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic)))) { aopPut (AOP (IC_RESULT (ic)), - aopGet (AOP (IC_LEFT (ic)), GPTRSIZE - 1, FALSE, FALSE), - GPTRSIZE - 1); + aopGet (AOP (IC_LEFT (ic)), GPTRSIZE - 1, FALSE, FALSE), + GPTRSIZE - 1, + isOperandVolatile (IC_RESULT (ic), FALSE)); } if (opIsGptr (IC_RESULT (ic)) && @@ -3096,8 +3499,9 @@ adjustArithmeticResult (iCode * ic) !sameRegs (AOP (IC_RESULT (ic)), AOP (IC_RIGHT (ic)))) { aopPut (AOP (IC_RESULT (ic)), - aopGet (AOP (IC_RIGHT (ic)), GPTRSIZE - 1, FALSE, FALSE), - GPTRSIZE - 1); + aopGet (AOP (IC_RIGHT (ic)), GPTRSIZE - 1, FALSE, FALSE), + GPTRSIZE - 1, + isOperandVolatile (IC_RESULT (ic), FALSE)); } if (opIsGptr (IC_RESULT (ic)) && @@ -3108,7 +3512,7 @@ adjustArithmeticResult (iCode * ic) { char buffer[5]; sprintf (buffer, "#%d", pointerCode (getSpec (operandType (IC_LEFT (ic))))); - aopPut (AOP (IC_RESULT (ic)), buffer, GPTRSIZE - 1); + aopPut (AOP (IC_RESULT (ic)), buffer, GPTRSIZE - 1, isOperandVolatile (IC_RESULT (ic), FALSE)); } } #endif @@ -3120,8 +3524,10 @@ static void genPlus (iCode * ic) { int size, offset = 0; - char *add; + int skip_bytes = 0; + char *add = "add"; asmop *leftOp, *rightOp; + operand * op; /* special cases :- */ @@ -3159,21 +3565,21 @@ genPlus (iCode * ic) emitcode ("mov", "c,%s", AOP (IC_LEFT (ic))->aopu.aop_dir); /* if result in bit space */ if (AOP_TYPE (IC_RESULT (ic)) == AOP_CRY) - { - if ((unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit) != 0L) - emitcode ("cpl", "c"); - outBitC (IC_RESULT (ic)); - } + { + if ((unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit) != 0L) + emitcode ("cpl", "c"); + outBitC (IC_RESULT (ic)); + } else - { - size = getDataSize (IC_RESULT (ic)); - while (size--) - { - MOVA (aopGet (AOP (IC_RIGHT (ic)), offset, FALSE, FALSE)); - emitcode ("addc", "a,#00"); - aopPut (AOP (IC_RESULT (ic)), "a", offset++); - } - } + { + size = getDataSize (IC_RESULT (ic)); + while (size--) + { + MOVA (aopGet (AOP (IC_RIGHT (ic)), offset, FALSE, FALSE)); + emitcode ("addc", "a,#00"); + aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE)); + } + } goto release; } @@ -3183,33 +3589,92 @@ genPlus (iCode * ic) goto release; size = getDataSize (IC_RESULT (ic)); - leftOp = AOP(IC_LEFT(ic)); rightOp = AOP(IC_RIGHT(ic)); - add = "add"; + op=IC_LEFT(ic); + + /* if this is an add for an array access + at a 256 byte boundary */ + if ( 2 == size + && AOP_TYPE (op) == AOP_IMMD + && IS_SYMOP (op) + && IS_SPEC (OP_SYM_ETYPE (op)) + && SPEC_ABSA (OP_SYM_ETYPE (op)) + && (SPEC_ADDR (OP_SYM_ETYPE (op)) & 0xff) == 0 + ) + { + D(emitcode ("; genPlus aligned array","")); + aopPut (AOP (IC_RESULT (ic)), + aopGet (rightOp, 0, FALSE, FALSE), + 0, + isOperandVolatile (IC_RESULT (ic), FALSE)); + + if( 1 == getDataSize (IC_RIGHT (ic)) ) + { + aopPut (AOP (IC_RESULT (ic)), + aopGet (leftOp, 1, FALSE, FALSE), + 1, + isOperandVolatile (IC_RESULT (ic), FALSE)); + } + else + { + MOVA (aopGet (AOP (IC_LEFT (ic)), 1, FALSE, FALSE)); + emitcode ("add", "a,%s", aopGet (rightOp, 1, FALSE, FALSE)); + aopPut (AOP (IC_RESULT (ic)), "a", 1, isOperandVolatile (IC_RESULT (ic), FALSE)); + } + goto release; + } + + /* if the lower bytes of a literal are zero skip the addition */ + if (AOP_TYPE (IC_RIGHT (ic)) == AOP_LIT ) + { + while ((0 == ((unsigned int) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit) & (0xff << skip_bytes*8))) && + (skip_bytes+1 < size)) + { + skip_bytes++; + } + if (skip_bytes) + D(emitcode ("; genPlus shortcut","")); + } while (size--) { - if (aopGetUsesAcc (leftOp, offset) && aopGetUsesAcc (rightOp, offset)) - { - emitcode("mov", "b,a"); - MOVA (aopGet (leftOp, offset, FALSE, TRUE)); - emitcode("xch", "a,b"); - MOVA (aopGet (rightOp, offset, FALSE, TRUE)); - emitcode (add, "a,b"); - } - else if (aopGetUsesAcc (leftOp, offset)) - { - MOVA (aopGet (leftOp, offset, FALSE, TRUE)); - emitcode (add, "a,%s", aopGet (rightOp, offset, FALSE, TRUE)); - } + if( offset >= skip_bytes ) + { + if (aopGetUsesAcc (leftOp, offset) && aopGetUsesAcc (rightOp, offset)) + { + emitcode("mov", "b,a"); + MOVA (aopGet (leftOp, offset, FALSE, TRUE)); + emitcode("xch", "a,b"); + MOVA (aopGet (rightOp, offset, FALSE, TRUE)); + emitcode (add, "a,b"); + } + else if (aopGetUsesAcc (leftOp, offset)) + { + MOVA (aopGet (leftOp, offset, FALSE, TRUE)); + emitcode (add, "a,%s", aopGet (rightOp, offset, FALSE, TRUE)); + } + else + { + MOVA (aopGet (rightOp, offset, FALSE, TRUE)); + emitcode (add, "a,%s", aopGet (leftOp, offset, FALSE, TRUE)); + } + aopPut (AOP (IC_RESULT (ic)), "a", offset, isOperandVolatile (IC_RESULT (ic), FALSE)); + add = "addc"; /* further adds must propagate carry */ + } else - { - MOVA (aopGet (rightOp, offset, FALSE, TRUE)); - emitcode (add, "a,%s", aopGet (leftOp, offset, FALSE, TRUE)); - } - aopPut (AOP (IC_RESULT (ic)), "a", offset++); - add = "addc"; /* further adds must propagate carry */ + { + if( !sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))) || + isOperandVolatile (IC_RESULT (ic), FALSE)) + { + /* just move */ + aopPut (AOP (IC_RESULT (ic)), + aopGet (leftOp, offset, FALSE, FALSE), + offset, + isOperandVolatile (IC_RESULT (ic), FALSE)); + } + } + offset++; } adjustArithmeticResult (ic); @@ -3242,8 +3707,8 @@ genMinusDec (iCode * ic) D(emitcode ("; genMinusDec","")); - /* if decrement 16 bits in register */ - if (AOP_TYPE(IC_LEFT(ic)) == AOP_REG && + /* if decrement >=16 bits in register or direct space */ + if ((AOP_TYPE(IC_LEFT(ic)) == AOP_REG || AOP_TYPE(IC_LEFT(ic)) == AOP_DIR) && sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))) && (size > 1) && (icount == 1)) @@ -3257,67 +3722,67 @@ genMinusDec (iCode * ic) * jumps straight to that target. */ if (ic->next && ic->next->op == GOTO - && (labelRange = findLabelBackwards (ic, IC_LABEL (ic->next)->key)) != 0 - && labelRange <= 10) - { - emitcode (";", "tail decrement optimized"); - tlbl = IC_LABEL (ic->next); - emitTlbl = 0; - } + && (labelRange = findLabelBackwards (ic, IC_LABEL (ic->next)->key)) != 0 + && labelRange <= 10) + { + emitcode (";", "tail decrement optimized"); + tlbl = IC_LABEL (ic->next); + emitTlbl = 0; + } else - { - tlbl = newiTempLabel (NULL); - emitTlbl = 1; - } + { + tlbl = newiTempLabel (NULL); + emitTlbl = 1; + } emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE)); if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG || - IS_AOP_PREG (IC_RESULT (ic))) - emitcode ("cjne", "%s,#0xff,%05d$" - ,aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE) - ,tlbl->key + 100); + IS_AOP_PREG (IC_RESULT (ic))) + emitcode ("cjne", "%s,#0xff,%05d$" + ,aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE) + ,tlbl->key + 100); else - { - emitcode ("mov", "a,#0xff"); - emitcode ("cjne", "a,%s,%05d$" - ,aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE) - ,tlbl->key + 100); - } + { + emitcode ("mov", "a,#0xff"); + emitcode ("cjne", "a,%s,%05d$" + ,aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE) + ,tlbl->key + 100); + } emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE)); if (size > 2) - { - if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG || - IS_AOP_PREG (IC_RESULT (ic))) - emitcode ("cjne", "%s,#0xff,%05d$" - ,aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE) - ,tlbl->key + 100); - else - { - emitcode ("cjne", "a,%s,%05d$" - ,aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE) - ,tlbl->key + 100); - } - emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE)); - } + { + if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG || + IS_AOP_PREG (IC_RESULT (ic))) + emitcode ("cjne", "%s,#0xff,%05d$" + ,aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE) + ,tlbl->key + 100); + else + { + emitcode ("cjne", "a,%s,%05d$" + ,aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE) + ,tlbl->key + 100); + } + emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE)); + } if (size > 3) - { - if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG || - IS_AOP_PREG (IC_RESULT (ic))) - emitcode ("cjne", "%s,#0xff,%05d$" - ,aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE) - ,tlbl->key + 100); - else - { - emitcode ("cjne", "a,%s,%05d$" - ,aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE) - ,tlbl->key + 100); - } - emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), MSB32, FALSE, FALSE)); - } + { + if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG || + IS_AOP_PREG (IC_RESULT (ic))) + emitcode ("cjne", "%s,#0xff,%05d$" + ,aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE) + ,tlbl->key + 100); + else + { + emitcode ("cjne", "a,%s,%05d$" + ,aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE) + ,tlbl->key + 100); + } + emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), MSB32, FALSE, FALSE)); + } if (emitTlbl) - { - emitcode ("", "%05d$:", tlbl->key + 100); - } + { + emitcode ("", "%05d$:", tlbl->key + 100); + } return TRUE; } @@ -3333,7 +3798,7 @@ genMinusDec (iCode * ic) { while (icount--) - emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), 0, FALSE, FALSE)); + emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), 0, FALSE, FALSE)); return TRUE; } @@ -3351,15 +3816,15 @@ addSign (operand * result, int offset, int sign) if (size > 0) { if (sign) - { - emitcode ("rlc", "a"); - emitcode ("subb", "a,acc"); - while (size--) - aopPut (AOP (result), "a", offset++); - } + { + emitcode ("rlc", "a"); + emitcode ("subb", "a,acc"); + while (size--) + aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE)); + } else - while (size--) - aopPut (AOP (result), zero, offset++); + while (size--) + aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE)); } } @@ -3388,7 +3853,7 @@ genMinusBits (iCode * ic) emitcode ("jnb", "%s,%05d$", AOP (IC_LEFT (ic))->aopu.aop_dir, (lbl->key + 100)); emitcode ("inc", "a"); emitcode ("", "%05d$:", (lbl->key + 100)); - aopPut (AOP (IC_RESULT (ic)), "a", 0); + aopPut (AOP (IC_RESULT (ic)), "a", 0, isOperandVolatile (IC_RESULT (ic), FALSE)); addSign (IC_RESULT (ic), MSB16, SPEC_USIGN (getSpec (operandType (IC_RESULT (ic))))); } } @@ -3432,22 +3897,22 @@ genMinus (iCode * ic) lit = -(long) lit; while (size--) - { - MOVA (aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE)); - /* first add without previous c */ - if (!offset) { - if (!size && lit==-1) { - emitcode ("dec", "a"); - } else { - emitcode ("add", "a,#0x%02x", - (unsigned int) (lit & 0x0FFL)); - } - } else { - emitcode ("addc", "a,#0x%02x", - (unsigned int) ((lit >> (offset * 8)) & 0x0FFL)); - } - aopPut (AOP (IC_RESULT (ic)), "a", offset++); - } + { + MOVA (aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE)); + /* first add without previous c */ + if (!offset) { + if (!size && lit== (unsigned long) -1) { + emitcode ("dec", "a"); + } else { + emitcode ("add", "a,#0x%02x", + (unsigned int) (lit & 0x0FFL)); + } + } else { + emitcode ("addc", "a,#0x%02x", + (unsigned int) ((lit >> (offset * 8)) & 0x0FFL)); + } + aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE)); + } } else { @@ -3457,30 +3922,28 @@ genMinus (iCode * ic) rightOp = AOP(IC_RIGHT(ic)); while (size--) - { - if (aopGetUsesAcc(rightOp, offset)) { - wassertl(!aopGetUsesAcc(leftOp, offset), "accumulator clash"); - MOVA (aopGet(rightOp, offset, FALSE, TRUE)); - if (offset > 0) { - emitcode( "cpl", "c"); - } else { - emitcode( "setb", "c"); - } - emitcode("subb", "a,%s", aopGet(leftOp, offset, FALSE, TRUE)); - emitcode("cpl", "a"); - } else { - MOVA (aopGet (leftOp, offset, FALSE, FALSE)); - if (offset == 0) - CLRC; - emitcode ("subb", "a,%s", - aopGet(rightOp, offset, FALSE, TRUE)); - } - - aopPut (AOP (IC_RESULT (ic)), "a", offset++); - } + { + if (aopGetUsesAcc(rightOp, offset)) { + wassertl(!aopGetUsesAcc(leftOp, offset), "accumulator clash"); + MOVA (aopGet(rightOp, offset, FALSE, TRUE)); + if (offset == 0) { + emitcode( "setb", "c"); + } + emitcode("subb", "a,%s", aopGet(leftOp, offset, FALSE, TRUE)); + emitcode("cpl", "a"); + } else { + MOVA (aopGet (leftOp, offset, FALSE, FALSE)); + if (offset == 0) + CLRC; + emitcode ("subb", "a,%s", + aopGet(rightOp, offset, FALSE, TRUE)); + } + + aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE)); + } } - - + + adjustArithmeticResult (ic); release: @@ -3495,8 +3958,8 @@ release: /*-----------------------------------------------------------------*/ static void genMultbits (operand * left, - operand * right, - operand * result) + operand * right, + operand * result) { D(emitcode ("; genMultbits","")); @@ -3505,27 +3968,28 @@ genMultbits (operand * left, outBitC (result); } - /*-----------------------------------------------------------------*/ /* genMultOneByte : 8*8=8/16 bit multiplication */ /*-----------------------------------------------------------------*/ static void genMultOneByte (operand * left, - operand * right, - operand * result) + operand * right, + operand * result) { - sym_link *opetype = operandType (result); symbol *lbl; - int size=AOP_SIZE(result); + int size = AOP_SIZE (result); + bool runtimeSign, compiletimeSign; + bool lUnsigned, rUnsigned; D(emitcode ("; genMultOneByte","")); - if (size<1 || size>2) { - // this should never happen - fprintf (stderr, "size!=1||2 (%d) in %s at line:%d \n", - AOP_SIZE(result), __FILE__, lineno); + if (size < 1 || size > 2) + { + /* this should never happen */ + fprintf (stderr, "size!=1||2 (%d) in %s at line:%d \n", + AOP_SIZE(result), __FILE__, lineno); exit (1); - } + } /* (if two literals: the value is computed before) */ /* if one literal, literal on the right */ @@ -3534,83 +3998,171 @@ genMultOneByte (operand * left, operand *t = right; right = left; left = t; - //emitcode (";", "swapped left and right"); - } - - if (SPEC_USIGN(opetype) - // ignore the sign of left and right, what else can we do? - || (SPEC_USIGN(operandType(left)) && - SPEC_USIGN(operandType(right)))) { - // just an unsigned 8*8=8/16 multiply - //emitcode (";","unsigned"); - // TODO: check for accumulator clash between left & right aops? - emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE)); - MOVA (aopGet (AOP (left), 0, FALSE, FALSE)); - emitcode ("mul", "ab"); - aopPut (AOP (result), "a", 0); - if (size==2) { - aopPut (AOP (result), "b", 1); + /* emitcode (";", "swapped left and right"); */ } - return; - } + /* if no literal, unsigned on the right: shorter code */ + if ( AOP_TYPE (right) != AOP_LIT + && SPEC_USIGN (getSpec (operandType (left)))) + { + operand *t = right; + right = left; + left = t; + } + + lUnsigned = SPEC_USIGN (getSpec (operandType (left))); + rUnsigned = SPEC_USIGN (getSpec (operandType (right))); + + if (size == 1 /* no, this is not a bug; with a 1 byte result there's + no need to take care about the signedness! */ + || (lUnsigned && rUnsigned)) + { + /* just an unsigned 8 * 8 = 8 multiply + or 8u * 8u = 16u */ + /* emitcode (";","unsigned"); */ + /* TODO: check for accumulator clash between left & right aops? */ + + if (AOP_TYPE (right) == AOP_LIT) + { + /* moving to accumulator first helps peepholes */ + MOVA (aopGet (AOP (left), 0, FALSE, FALSE)); + emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE)); + } + else + { + emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE)); + MOVA (aopGet (AOP (left), 0, FALSE, FALSE)); + } - // we have to do a signed multiply + emitcode ("mul", "ab"); + aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE)); + if (size == 2) + aopPut (AOP (result), "b", 1, isOperandVolatile (result, FALSE)); + return; + } - //emitcode (";", "signed"); - emitcode ("clr", "F0"); // reset sign flag - MOVA (aopGet (AOP (left), 0, FALSE, FALSE)); + /* we have to do a signed multiply */ + /* emitcode (";", "signed"); */ - lbl=newiTempLabel(NULL); - emitcode ("jnb", "acc.7,%05d$", lbl->key+100); - // left side is negative, 8-bit two's complement, this fails for -128 - emitcode ("setb", "F0"); // set sign flag - emitcode ("cpl", "a"); - emitcode ("inc", "a"); + /* now sign adjust for both left & right */ - emitcode ("", "%05d$:", lbl->key+100); + /* let's see what's needed: */ + /* apply negative sign during runtime */ + runtimeSign = FALSE; + /* negative sign from literals */ + compiletimeSign = FALSE; - /* if literal */ - if (AOP_TYPE(right)==AOP_LIT) { - signed char val=floatFromVal (AOP (right)->aopu.aop_lit); - /* AND literal negative */ - if (val < 0) { - emitcode ("cpl", "F0"); // complement sign flag - emitcode ("mov", "b,#0x%02x", -val); - } else { - emitcode ("mov", "b,#0x%02x", val); + if (!lUnsigned) + { + if (AOP_TYPE(left) == AOP_LIT) + { + /* signed literal */ + signed char val = (char) floatFromVal (AOP (left)->aopu.aop_lit); + if (val < 0) + compiletimeSign = TRUE; + } + else + /* signed but not literal */ + runtimeSign = TRUE; } - } else { - lbl=newiTempLabel(NULL); - emitcode ("mov", "b,a"); - emitcode ("mov", "a,%s", aopGet (AOP (right), 0, FALSE, FALSE)); - emitcode ("jnb", "acc.7,%05d$", lbl->key+100); - // right side is negative, 8-bit two's complement - emitcode ("cpl", "F0"); // complement sign flag - emitcode ("cpl", "a"); - emitcode ("inc", "a"); - emitcode ("", "%05d$:", lbl->key+100); - } - emitcode ("mul", "ab"); - - lbl=newiTempLabel(NULL); - emitcode ("jnb", "F0,%05d$", lbl->key+100); - // only ONE op was negative, we have to do a 8/16-bit two's complement - emitcode ("cpl", "a"); // lsb - if (size==1) { - emitcode ("inc", "a"); - } else { - emitcode ("add", "a,#1"); - emitcode ("xch", "a,b"); - emitcode ("cpl", "a"); // msb - emitcode ("addc", "a,#0"); - emitcode ("xch", "a,b"); - } - emitcode ("", "%05d$:", lbl->key+100); - aopPut (AOP (result), "a", 0); - if (size==2) { - aopPut (AOP (result), "b", 1); - } + if (!rUnsigned) + { + if (AOP_TYPE(right) == AOP_LIT) + { + /* signed literal */ + signed char val = (char) floatFromVal (AOP (right)->aopu.aop_lit); + if (val < 0) + compiletimeSign ^= TRUE; + } + else + /* signed but not literal */ + runtimeSign = TRUE; + } + + /* initialize F0, which stores the runtime sign */ + if (runtimeSign) + { + if (compiletimeSign) + emitcode ("setb", "F0"); /* set sign flag */ + else + emitcode ("clr", "F0"); /* reset sign flag */ + } + + /* save the signs of the operands */ + if (AOP_TYPE(right) == AOP_LIT) + { + signed char val = (char) floatFromVal (AOP (right)->aopu.aop_lit); + + if (!rUnsigned && val < 0) + emitcode ("mov", "b,#0x%02x", -val); + else + emitcode ("mov", "b,#0x%02x", (unsigned char) val); + } + else /* ! literal */ + { + if (rUnsigned) /* emitcode (";", "signed"); */ + + emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE)); + else + { + MOVA (aopGet (AOP (right), 0, FALSE, FALSE)); + lbl = newiTempLabel (NULL); + emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100)); + emitcode ("cpl", "F0"); /* complement sign flag */ + emitcode ("cpl", "a"); /* 2's complement */ + emitcode ("inc", "a"); + emitcode ("", "%05d$:", (lbl->key + 100)); + emitcode ("mov", "b,a"); + } + } + + if (AOP_TYPE(left) == AOP_LIT) + { + signed char val = (char) floatFromVal (AOP (left)->aopu.aop_lit); + + if (!lUnsigned && val < 0) + emitcode ("mov", "a,#0x%02x", -val); + else + emitcode ("mov", "a,#0x%02x", (unsigned char) val); + } + else /* ! literal */ + { + MOVA (aopGet (AOP (left), 0, FALSE, FALSE)); + + if (!lUnsigned) + { + lbl = newiTempLabel (NULL); + emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100)); + emitcode ("cpl", "F0"); /* complement sign flag */ + emitcode ("cpl", "a"); /* 2's complement */ + emitcode ("inc", "a"); + emitcode ("", "%05d$:", (lbl->key + 100)); + } + } + + /* now the multiplication */ + emitcode ("mul", "ab"); + if (runtimeSign || compiletimeSign) + { + lbl = newiTempLabel (NULL); + if (runtimeSign) + emitcode ("jnb", "F0,%05d$", (lbl->key + 100)); + emitcode ("cpl", "a"); /* lsb 2's complement */ + if (size != 2) + emitcode ("inc", "a"); /* inc doesn't set carry flag */ + else + { + emitcode ("add", "a,#1"); /* this sets carry flag */ + emitcode ("xch", "a,b"); + emitcode ("cpl", "a"); /* msb 2's complement */ + emitcode ("addc", "a,#0"); + emitcode ("xch", "a,b"); + } + emitcode ("", "%05d$:", (lbl->key + 100)); + } + aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE)); + if (size == 2) + aopPut (AOP (result), "b", 1, isOperandVolatile (result, FALSE)); } /*-----------------------------------------------------------------*/ @@ -3643,7 +4195,7 @@ genMult (iCode * ic) #if 0 // one of them can be a sloc shared with the result if (AOP_SIZE (left) == 1 && AOP_SIZE (right) == 1) #else - if (getSize(operandType(left)) == 1 && + if (getSize(operandType(left)) == 1 && getSize(operandType(right)) == 1) #endif { @@ -3653,13 +4205,13 @@ genMult (iCode * ic) /* should have been converted to function call */ fprintf (stderr, "left: %d right: %d\n", getSize(OP_SYMBOL(left)->type), - getSize(OP_SYMBOL(right)->type)); + getSize(OP_SYMBOL(right)->type)); assert (0); release: - freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); - freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); freeAsmop (result, NULL, ic, TRUE); + freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); + freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); } /*-----------------------------------------------------------------*/ @@ -3667,8 +4219,8 @@ release: /*-----------------------------------------------------------------*/ static void genDivbits (operand * left, - operand * right, - operand * result) + operand * right, + operand * result) { char *l; @@ -3683,7 +4235,7 @@ genDivbits (operand * left, emitcode ("div", "ab"); emitcode ("rrc", "a"); - aopPut (AOP (result), "c", 0); + aopPut (AOP (result), "c", 0, isOperandVolatile (result, FALSE)); } /*-----------------------------------------------------------------*/ @@ -3691,87 +4243,192 @@ genDivbits (operand * left, /*-----------------------------------------------------------------*/ static void genDivOneByte (operand * left, - operand * right, - operand * result) + operand * right, + operand * result) { - sym_link *opetype = operandType (result); - char *l; + bool lUnsigned, rUnsigned; + bool runtimeSign, compiletimeSign; symbol *lbl; int size, offset; D(emitcode ("; genDivOneByte","")); + /* Why is it necessary that genDivOneByte() can return an int result? + Have a look at: + + volatile unsigned char uc; + volatile signed char sc1, sc2; + volatile int i; + + uc = 255; + sc1 = -1; + i = uc / sc1; + + Or: + + sc1 = -128; + sc2 = -1; + i = sc1 / sc2; + + In all cases a one byte result would overflow, the following cast to int + would return the wrong result. + + Two possible solution: + a) cast operands to int, if ((unsigned) / (signed)) or + ((signed) / (signed)) + b) return an 16 bit signed int; this is what we're doing here! + */ + size = AOP_SIZE (result) - 1; offset = 1; + lUnsigned = SPEC_USIGN (getSpec (operandType (left))); + rUnsigned = SPEC_USIGN (getSpec (operandType (right))); + /* signed or unsigned */ - if (SPEC_USIGN (opetype)) + if (lUnsigned && rUnsigned) { /* unsigned is easy */ emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE)); - l = aopGet (AOP (left), 0, FALSE, FALSE); - MOVA (l); + MOVA (aopGet (AOP (left), 0, FALSE, FALSE)); emitcode ("div", "ab"); - aopPut (AOP (result), "a", 0); + aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE)); while (size--) - aopPut (AOP (result), zero, offset++); + aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE)); return; } /* signed is a little bit more difficult */ + /* now sign adjust for both left & right */ + + /* let's see what's needed: */ + /* apply negative sign during runtime */ + runtimeSign = FALSE; + /* negative sign from literals */ + compiletimeSign = FALSE; + + if (!lUnsigned) + { + if (AOP_TYPE(left) == AOP_LIT) + { + /* signed literal */ + signed char val = (char) floatFromVal (AOP (left)->aopu.aop_lit); + if (val < 0) + compiletimeSign = TRUE; + } + else + /* signed but not literal */ + runtimeSign = TRUE; + } + + if (!rUnsigned) + { + if (AOP_TYPE(right) == AOP_LIT) + { + /* signed literal */ + signed char val = (char) floatFromVal (AOP (right)->aopu.aop_lit); + if (val < 0) + compiletimeSign ^= TRUE; + } + else + /* signed but not literal */ + runtimeSign = TRUE; + } + + /* initialize F0, which stores the runtime sign */ + if (runtimeSign) + { + if (compiletimeSign) + emitcode ("setb", "F0"); /* set sign flag */ + else + emitcode ("clr", "F0"); /* reset sign flag */ + } + /* save the signs of the operands */ - l = aopGet (AOP (left), 0, FALSE, FALSE); - MOVA (l); - emitcode ("xrl", "a,%s", aopGet (AOP (right), 0, FALSE, TRUE)); - emitcode ("push", "acc"); /* save it on the stack */ + if (AOP_TYPE(right) == AOP_LIT) + { + signed char val = (char) floatFromVal (AOP (right)->aopu.aop_lit); - /* now sign adjust for both left & right */ - l = aopGet (AOP (right), 0, FALSE, FALSE); - MOVA (l); - lbl = newiTempLabel (NULL); - emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100)); - emitcode ("cpl", "a"); - emitcode ("inc", "a"); - emitcode ("", "%05d$:", (lbl->key + 100)); - emitcode ("mov", "b,a"); + if (!rUnsigned && val < 0) + emitcode ("mov", "b,#0x%02x", -val); + else + emitcode ("mov", "b,#0x%02x", (unsigned char) val); + } + else /* ! literal */ + { + if (rUnsigned) + emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE)); + else + { + MOVA (aopGet (AOP (right), 0, FALSE, FALSE)); + lbl = newiTempLabel (NULL); + emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100)); + emitcode ("cpl", "F0"); /* complement sign flag */ + emitcode ("cpl", "a"); /* 2's complement */ + emitcode ("inc", "a"); + emitcode ("", "%05d$:", (lbl->key + 100)); + emitcode ("mov", "b,a"); + } + } - /* sign adjust left side */ - l = aopGet (AOP (left), 0, FALSE, FALSE); - MOVA (l); + if (AOP_TYPE(left) == AOP_LIT) + { + signed char val = (char) floatFromVal (AOP (left)->aopu.aop_lit); - lbl = newiTempLabel (NULL); - emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100)); - emitcode ("cpl", "a"); - emitcode ("inc", "a"); - emitcode ("", "%05d$:", (lbl->key + 100)); + if (!lUnsigned && val < 0) + emitcode ("mov", "a,#0x%02x", -val); + else + emitcode ("mov", "a,#0x%02x", (unsigned char) val); + } + else /* ! literal */ + { + MOVA (aopGet (AOP (left), 0, FALSE, FALSE)); + + if (!lUnsigned) + { + lbl = newiTempLabel (NULL); + emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100)); + emitcode ("cpl", "F0"); /* complement sign flag */ + emitcode ("cpl", "a"); /* 2's complement */ + emitcode ("inc", "a"); + emitcode ("", "%05d$:", (lbl->key + 100)); + } + } /* now the division */ emitcode ("div", "ab"); - /* we are interested in the lower order - only */ - emitcode ("mov", "b,a"); - lbl = newiTempLabel (NULL); - emitcode ("pop", "acc"); - /* if there was an over flow we don't - adjust the sign of the result */ - emitcode ("jb", "ov,%05d$", (lbl->key + 100)); - emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100)); - CLRC; - emitcode ("clr", "a"); - emitcode ("subb", "a,b"); - emitcode ("mov", "b,a"); - emitcode ("", "%05d$:", (lbl->key + 100)); - /* now we are done */ - aopPut (AOP (result), "b", 0); - if (size > 0) + if (runtimeSign || compiletimeSign) { - emitcode ("mov", "c,b.7"); - emitcode ("subb", "a,acc"); - } - while (size--) - aopPut (AOP (result), "a", offset++); + lbl = newiTempLabel (NULL); + if (runtimeSign) + emitcode ("jnb", "F0,%05d$", (lbl->key + 100)); + emitcode ("cpl", "a"); /* lsb 2's complement */ + emitcode ("inc", "a"); + emitcode ("", "%05d$:", (lbl->key + 100)); + aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE)); + if (size > 0) + { + /* msb is 0x00 or 0xff depending on the sign */ + if (runtimeSign) + { + emitcode ("mov", "c,F0"); + emitcode ("subb", "a,acc"); + while (size--) + aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE)); + } + else /* compiletimeSign */ + while (size--) + aopPut (AOP (result), "#0xff", offset++, isOperandVolatile (result, FALSE)); + } + } + else + { + aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE)); + while (size--) + aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE)); + } } /*-----------------------------------------------------------------*/ @@ -3811,8 +4468,8 @@ genDiv (iCode * ic) /* 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 (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); freeAsmop (result, NULL, ic, TRUE); } @@ -3821,8 +4478,8 @@ release: /*-----------------------------------------------------------------*/ static void genModbits (operand * left, - operand * right, - operand * result) + operand * right, + operand * result) { char *l; @@ -3838,7 +4495,7 @@ genModbits (operand * left, emitcode ("div", "ab"); emitcode ("mov", "a,b"); emitcode ("rrc", "a"); - aopPut (AOP (result), "c", 0); + aopPut (AOP (result), "c", 0, isOperandVolatile (result, FALSE)); } /*-----------------------------------------------------------------*/ @@ -3846,76 +4503,136 @@ genModbits (operand * left, /*-----------------------------------------------------------------*/ static void genModOneByte (operand * left, - operand * right, - operand * result) + operand * right, + operand * result) { - sym_link *opetype = operandType (result); - char *l; + bool lUnsigned, rUnsigned; + bool runtimeSign, compiletimeSign; symbol *lbl; + int size, offset; D(emitcode ("; genModOneByte","")); + size = AOP_SIZE (result) - 1; + offset = 1; + lUnsigned = SPEC_USIGN (getSpec (operandType (left))); + rUnsigned = SPEC_USIGN (getSpec (operandType (right))); + /* signed or unsigned */ - if (SPEC_USIGN (opetype)) + if (lUnsigned && rUnsigned) { /* unsigned is easy */ emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE)); - l = aopGet (AOP (left), 0, FALSE, FALSE); - MOVA (l); + MOVA (aopGet (AOP (left), 0, FALSE, FALSE)); emitcode ("div", "ab"); - aopPut (AOP (result), "b", 0); + aopPut (AOP (result), "b", 0, isOperandVolatile (result, FALSE)); + while (size--) + aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE)); return; } /* signed is a little bit more difficult */ - /* save the signs of the operands */ - l = aopGet (AOP (left), 0, FALSE, FALSE); - MOVA (l); - - emitcode ("xrl", "a,%s", aopGet (AOP (right), 0, FALSE, FALSE)); - emitcode ("push", "acc"); /* save it on the stack */ - /* now sign adjust for both left & right */ - l = aopGet (AOP (right), 0, FALSE, FALSE); - MOVA (l); - lbl = newiTempLabel (NULL); - emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100)); - emitcode ("cpl", "a"); - emitcode ("inc", "a"); - emitcode ("", "%05d$:", (lbl->key + 100)); - emitcode ("mov", "b,a"); + /* modulus: sign of the right operand has no influence on the result! */ + if (AOP_TYPE(right) == AOP_LIT) + { + signed char val = (char) floatFromVal (AOP (right)->aopu.aop_lit); + + if (!rUnsigned && val < 0) + emitcode ("mov", "b,#0x%02x", -val); + else + emitcode ("mov", "b,#0x%02x", (unsigned char) val); + } + else /* not literal */ + { + if (rUnsigned) + emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE)); + else + { + MOVA (aopGet (AOP (right), 0, FALSE, FALSE)); + lbl = newiTempLabel (NULL); + emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100)); + emitcode ("cpl", "a"); /* 2's complement */ + emitcode ("inc", "a"); + emitcode ("", "%05d$:", (lbl->key + 100)); + emitcode ("mov", "b,a"); + } + } + + /* let's see what's needed: */ + /* apply negative sign during runtime */ + runtimeSign = FALSE; + /* negative sign from literals */ + compiletimeSign = FALSE; /* sign adjust left side */ - l = aopGet (AOP (left), 0, FALSE, FALSE); - MOVA (l); + if (AOP_TYPE(left) == AOP_LIT) + { + signed char val = (char) floatFromVal (AOP (left)->aopu.aop_lit); - lbl = newiTempLabel (NULL); - emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100)); - emitcode ("cpl", "a"); - emitcode ("inc", "a"); - emitcode ("", "%05d$:", (lbl->key + 100)); + if (!lUnsigned && val < 0) + { + compiletimeSign = TRUE; /* set sign flag */ + emitcode ("mov", "a,#0x%02x", -val); + } + else + emitcode ("mov", "a,#0x%02x", (unsigned char) val); + } + else /* ! literal */ + { + MOVA (aopGet (AOP (left), 0, FALSE, FALSE)); - /* now the multiplication */ + if (!lUnsigned) + { + runtimeSign = TRUE; + emitcode ("clr", "F0"); /* clear sign flag */ + + lbl = newiTempLabel (NULL); + emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100)); + emitcode ("setb", "F0"); /* set sign flag */ + emitcode ("cpl", "a"); /* 2's complement */ + emitcode ("inc", "a"); + emitcode ("", "%05d$:", (lbl->key + 100)); + } + } + + /* now the modulus */ emitcode ("div", "ab"); - /* we are interested in the lower order - only */ - lbl = newiTempLabel (NULL); - emitcode ("pop", "acc"); - /* if there was an over flow we don't - adjust the sign of the result */ - emitcode ("jb", "ov,%05d$", (lbl->key + 100)); - emitcode ("jnb", "acc.7,%05d$", (lbl->key + 100)); - CLRC; - emitcode ("clr", "a"); - emitcode ("subb", "a,b"); - emitcode ("mov", "b,a"); - emitcode ("", "%05d$:", (lbl->key + 100)); - /* now we are done */ - aopPut (AOP (result), "b", 0); + if (runtimeSign || compiletimeSign) + { + emitcode ("mov", "a,b"); + lbl = newiTempLabel (NULL); + if (runtimeSign) + emitcode ("jnb", "F0,%05d$", (lbl->key + 100)); + emitcode ("cpl", "a"); /* 2's complement */ + emitcode ("inc", "a"); + emitcode ("", "%05d$:", (lbl->key + 100)); + aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE)); + if (size > 0) + { + /* msb is 0x00 or 0xff depending on the sign */ + if (runtimeSign) + { + emitcode ("mov", "c,F0"); + emitcode ("subb", "a,acc"); + while (size--) + aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE)); + } + else /* compiletimeSign */ + while (size--) + aopPut (AOP (result), "#0xff", offset++, isOperandVolatile (result, FALSE)); + } + } + else + { + aopPut (AOP (result), "b", 0, isOperandVolatile (result, FALSE)); + while (size--) + aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE)); + } } /*-----------------------------------------------------------------*/ @@ -3956,8 +4673,8 @@ genMod (iCode * ic) assert (0); release: - freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); + freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); freeAsmop (result, NULL, ic, TRUE); } @@ -3965,7 +4682,7 @@ release: /* genIfxJump :- will create a jump depending on the ifx */ /*-----------------------------------------------------------------*/ static void -genIfxJump (iCode * ic, char *jval) +genIfxJump (iCode * ic, char *jval, operand *left, operand *right, operand *result) { symbol *jlbl; symbol *tlbl = newiTempLabel (NULL); @@ -3979,19 +4696,22 @@ genIfxJump (iCode * ic, char *jval) { jlbl = IC_TRUE (ic); inst = ((strcmp (jval, "a") == 0 ? "jz" : - (strcmp (jval, "c") == 0 ? "jnc" : "jnb"))); + (strcmp (jval, "c") == 0 ? "jnc" : "jnb"))); } else { /* false label is present */ jlbl = IC_FALSE (ic); inst = ((strcmp (jval, "a") == 0 ? "jnz" : - (strcmp (jval, "c") == 0 ? "jc" : "jb"))); + (strcmp (jval, "c") == 0 ? "jc" : "jb"))); } if (strcmp (inst, "jb") == 0 || strcmp (inst, "jnb") == 0) emitcode (inst, "%s,%05d$", jval, (tlbl->key + 100)); else emitcode (inst, "%05d$", tlbl->key + 100); + freeForBranchAsmop (result); + freeForBranchAsmop (right); + freeForBranchAsmop (left); emitcode ("ljmp", "%05d$", jlbl->key + 100); emitcode ("", "%05d$:", tlbl->key + 100); @@ -4004,10 +4724,11 @@ genIfxJump (iCode * ic, char *jval) /*-----------------------------------------------------------------*/ static void genCmp (operand * left, operand * right, - operand * result, iCode * ifx, int sign, iCode *ic) + operand * result, iCode * ifx, int sign, iCode *ic) { int size, offset = 0; unsigned long lit = 0L; + bool rightInB; D(emitcode ("; genCmp","")); @@ -4016,7 +4737,7 @@ genCmp (operand * left, operand * right, AOP_TYPE (right) == AOP_CRY) { emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir); - emitcode ("anl", "c,/%s", AOP (left)->aopu.aop_dir); + emitcode ("anl", "c,%s", AOP (left)->aopu.aop_dir); } else { @@ -4027,71 +4748,84 @@ genCmp (operand * left, operand * right, /* if unsigned char cmp with lit, do cjne left,#right,zz */ if ((size == 1) && !sign && - (AOP_TYPE (right) == AOP_LIT && AOP_TYPE (left) != AOP_DIR)) - { - symbol *lbl = newiTempLabel (NULL); - emitcode ("cjne", "%s,%s,%05d$", - aopGet (AOP (left), offset, FALSE, FALSE), - aopGet (AOP (right), offset, FALSE, FALSE), - lbl->key + 100); - emitcode ("", "%05d$:", lbl->key + 100); - } + (AOP_TYPE (right) == AOP_LIT && AOP_TYPE (left) != AOP_DIR)) + { + symbol *lbl = newiTempLabel (NULL); + emitcode ("cjne", "%s,%s,%05d$", + aopGet (AOP (left), offset, FALSE, FALSE), + aopGet (AOP (right), offset, FALSE, FALSE), + lbl->key + 100); + emitcode ("", "%05d$:", lbl->key + 100); + } else - { - if (AOP_TYPE (right) == AOP_LIT) - { - lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit); - /* optimize if(x < 0) or if(x >= 0) */ - if (lit == 0L) - { - if (!sign) - { - CLRC; - } - else - { - MOVA (aopGet (AOP (left), AOP_SIZE (left) - 1, FALSE, FALSE)); - if (!(AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result)) && ifx) - { - genIfxJump (ifx, "acc.7"); - return; - } - else - emitcode ("rlc", "a"); - } - goto release; - } - } - CLRC; - while (size--) - { - MOVA (aopGet (AOP (left), offset, FALSE, FALSE)); - if (sign && size == 0) - { - emitcode ("xrl", "a,#0x80"); - if (AOP_TYPE (right) == AOP_LIT) - { - unsigned long lit = (unsigned long) - floatFromVal (AOP (right)->aopu.aop_lit); - emitcode ("subb", "a,#0x%02x", - 0x80 ^ (unsigned int) ((lit >> (offset * 8)) & 0x0FFL)); - } - else - { - emitcode ("mov", "b,%s", aopGet (AOP (right), offset++, FALSE, FALSE)); - emitcode ("xrl", "b,#0x80"); - emitcode ("subb", "a,b"); - } - } - else - emitcode ("subb", "a,%s", aopGet (AOP (right), offset++, FALSE, FALSE)); - } - } + { + if (AOP_TYPE (right) == AOP_LIT) + { + lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit); + /* optimize if(x < 0) or if(x >= 0) */ + if (lit == 0L) + { + if (!sign) + { + CLRC; + } + else + { + MOVA (aopGet (AOP (left), AOP_SIZE (left) - 1, FALSE, FALSE)); + if (!(AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result)) && ifx) + { + genIfxJump (ifx, "acc.7", left, right, result); + freeAsmop (right, NULL, ic, TRUE); + freeAsmop (left, NULL, ic, TRUE); + + return; + } + else + emitcode ("rlc", "a"); + } + goto release; + } + } + CLRC; + while (size--) + { + rightInB = aopGetUsesAcc(AOP (right), offset); + if (rightInB) + emitcode ("mov", "b,%s", aopGet (AOP (right), offset, FALSE, FALSE)); + MOVA (aopGet (AOP (left), offset, FALSE, FALSE)); + if (sign && size == 0) + { + emitcode ("xrl", "a,#0x80"); + if (AOP_TYPE (right) == AOP_LIT) + { + unsigned long lit = (unsigned long) + floatFromVal (AOP (right)->aopu.aop_lit); + emitcode ("subb", "a,#0x%02x", + 0x80 ^ (unsigned int) ((lit >> (offset * 8)) & 0x0FFL)); + } + else + { + if (!rightInB) + emitcode ("mov", "b,%s", aopGet (AOP (right), offset, FALSE, FALSE)); + emitcode ("xrl", "b,#0x80"); + emitcode ("subb", "a,b"); + } + } + else + { + if (rightInB) + emitcode ("subb", "a,b"); + else + emitcode ("subb", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE)); + } + offset++; + } + } } release: - freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); + freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); if (AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result)) { outBitC (result); @@ -4102,9 +4836,9 @@ release: ifx conditional branch then generate code a little differently */ if (ifx) - genIfxJump (ifx, "c"); + genIfxJump (ifx, "c", NULL, NULL, result); else - outBitC (result); + outBitC (result); /* leave the result in acc */ } } @@ -4127,7 +4861,8 @@ genCmpGt (iCode * ic, iCode * ifx) letype = getSpec (operandType (left)); retype = getSpec (operandType (right)); - sign = !(SPEC_USIGN (letype) | SPEC_USIGN (retype)); + sign = !((SPEC_USIGN (letype) && !(IS_CHAR (letype) && IS_LITERAL (letype))) || + (SPEC_USIGN (retype) && !(IS_CHAR (retype) && IS_LITERAL (retype)))); /* assign the amsops */ aopOp (left, ic, FALSE); aopOp (right, ic, FALSE); @@ -4156,8 +4891,8 @@ genCmpLt (iCode * ic, iCode * ifx) letype = getSpec (operandType (left)); retype = getSpec (operandType (right)); - sign = !(SPEC_USIGN (letype) | SPEC_USIGN (retype)); - + sign = !((SPEC_USIGN (letype) && !(IS_CHAR (letype) && IS_LITERAL (letype))) || + (SPEC_USIGN (retype) && !(IS_CHAR (retype) && IS_LITERAL (retype)))); /* assign the amsops */ aopOp (left, ic, FALSE); aopOp (right, ic, FALSE); @@ -4182,61 +4917,66 @@ gencjneshort (operand * left, operand * right, symbol * lbl) if the right is in a pointer register and left is not */ if ((AOP_TYPE (left) == AOP_LIT) || + (AOP_TYPE (left) == AOP_IMMD) || (IS_AOP_PREG (right) && !IS_AOP_PREG (left))) { operand *t = right; right = left; left = t; } + if (AOP_TYPE (right) == AOP_LIT) lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit); /* if the right side is a literal then anything goes */ if (AOP_TYPE (right) == AOP_LIT && - AOP_TYPE (left) != AOP_DIR) + AOP_TYPE (left) != AOP_DIR && + AOP_TYPE (left) != AOP_IMMD) { while (size--) - { - emitcode ("cjne", "%s,%s,%05d$", - aopGet (AOP (left), offset, FALSE, FALSE), - aopGet (AOP (right), offset, FALSE, FALSE), - lbl->key + 100); - offset++; - } + { + emitcode ("cjne", "%s,%s,%05d$", + aopGet (AOP (left), offset, FALSE, FALSE), + aopGet (AOP (right), offset, FALSE, FALSE), + lbl->key + 100); + offset++; + } } /* if the right side is in a register or in direct space or if the left is a pointer register & right is not */ else if (AOP_TYPE (right) == AOP_REG || - AOP_TYPE (right) == AOP_DIR || - (AOP_TYPE (left) == AOP_DIR && AOP_TYPE (right) == AOP_LIT) || - (IS_AOP_PREG (left) && !IS_AOP_PREG (right))) + AOP_TYPE (right) == AOP_DIR || + AOP_TYPE (right) == AOP_LIT || + AOP_TYPE (right) == AOP_IMMD || + (AOP_TYPE (left) == AOP_DIR && AOP_TYPE (right) == AOP_LIT) || + (IS_AOP_PREG (left) && !IS_AOP_PREG (right))) { while (size--) - { - MOVA (aopGet (AOP (left), offset, FALSE, FALSE)); - if ((AOP_TYPE (left) == AOP_DIR && AOP_TYPE (right) == AOP_LIT) && - ((unsigned int) ((lit >> (offset * 8)) & 0x0FFL) == 0)) - emitcode ("jnz", "%05d$", lbl->key + 100); - else - emitcode ("cjne", "a,%s,%05d$", - aopGet (AOP (right), offset, FALSE, TRUE), - lbl->key + 100); - offset++; - } + { + MOVA (aopGet (AOP (left), offset, FALSE, FALSE)); + if ((AOP_TYPE (left) == AOP_DIR && AOP_TYPE (right) == AOP_LIT) && + ((unsigned int) ((lit >> (offset * 8)) & 0x0FFL) == 0)) + emitcode ("jnz", "%05d$", lbl->key + 100); + else + emitcode ("cjne", "a,%s,%05d$", + aopGet (AOP (right), offset, FALSE, TRUE), + lbl->key + 100); + offset++; + } } else { /* right is a pointer reg need both a & b */ while (size--) - { - char *l = aopGet (AOP (left), offset, FALSE, FALSE); - if (strcmp (l, "b")) - emitcode ("mov", "b,%s", l); - MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); - emitcode ("cjne", "a,b,%05d$", lbl->key + 100); - offset++; - } + { + char *l = aopGet (AOP (left), offset, FALSE, FALSE); + if (strcmp (l, "b")) + emitcode ("mov", "b,%s", l); + MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); + emitcode ("cjne", "a,b,%05d$", lbl->key + 100); + offset++; + } } } @@ -4287,67 +5027,79 @@ genCmpEq (iCode * ic, iCode * ifx) symbol *tlbl; /* if they are both bit variables */ if (AOP_TYPE (left) == AOP_CRY && - ((AOP_TYPE (right) == AOP_CRY) || (AOP_TYPE (right) == AOP_LIT))) - { - if (AOP_TYPE (right) == AOP_LIT) - { - unsigned long lit = (unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit); - if (lit == 0L) - { - emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); - emitcode ("cpl", "c"); - } - else if (lit == 1L) - { - emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); - } - else - { - emitcode ("clr", "c"); - } - /* AOP_TYPE(right) == AOP_CRY */ - } - else - { - symbol *lbl = newiTempLabel (NULL); - emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); - emitcode ("jb", "%s,%05d$", AOP (right)->aopu.aop_dir, (lbl->key + 100)); - emitcode ("cpl", "c"); - emitcode ("", "%05d$:", (lbl->key + 100)); - } - /* if true label then we jump if condition - supplied is true */ - tlbl = newiTempLabel (NULL); - if (IC_TRUE (ifx)) - { - emitcode ("jnc", "%05d$", tlbl->key + 100); - emitcode ("ljmp", "%05d$", IC_TRUE (ifx)->key + 100); - } - else - { - emitcode ("jc", "%05d$", tlbl->key + 100); - emitcode ("ljmp", "%05d$", IC_FALSE (ifx)->key + 100); - } - emitcode ("", "%05d$:", tlbl->key + 100); - } + ((AOP_TYPE (right) == AOP_CRY) || (AOP_TYPE (right) == AOP_LIT))) + { + if (AOP_TYPE (right) == AOP_LIT) + { + unsigned long lit = (unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit); + if (lit == 0L) + { + emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); + emitcode ("cpl", "c"); + } + else if (lit == 1L) + { + emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); + } + else + { + emitcode ("clr", "c"); + } + /* AOP_TYPE(right) == AOP_CRY */ + } + else + { + symbol *lbl = newiTempLabel (NULL); + emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); + emitcode ("jb", "%s,%05d$", AOP (right)->aopu.aop_dir, (lbl->key + 100)); + emitcode ("cpl", "c"); + emitcode ("", "%05d$:", (lbl->key + 100)); + } + /* if true label then we jump if condition + supplied is true */ + tlbl = newiTempLabel (NULL); + if (IC_TRUE (ifx)) + { + emitcode ("jnc", "%05d$", tlbl->key + 100); + freeForBranchAsmop (result); + freeForBranchAsmop (right); + freeForBranchAsmop (left); + emitcode ("ljmp", "%05d$", IC_TRUE (ifx)->key + 100); + } + else + { + emitcode ("jc", "%05d$", tlbl->key + 100); + freeForBranchAsmop (result); + freeForBranchAsmop (right); + freeForBranchAsmop (left); + emitcode ("ljmp", "%05d$", IC_FALSE (ifx)->key + 100); + } + emitcode ("", "%05d$:", tlbl->key + 100); + } else - { - tlbl = newiTempLabel (NULL); - gencjneshort (left, right, tlbl); - if (IC_TRUE (ifx)) - { - emitcode ("ljmp", "%05d$", IC_TRUE (ifx)->key + 100); - emitcode ("", "%05d$:", tlbl->key + 100); - } - else - { - symbol *lbl = newiTempLabel (NULL); - emitcode ("sjmp", "%05d$", lbl->key + 100); - emitcode ("", "%05d$:", tlbl->key + 100); - emitcode ("ljmp", "%05d$", IC_FALSE (ifx)->key + 100); - emitcode ("", "%05d$:", lbl->key + 100); - } - } + { + tlbl = newiTempLabel (NULL); + gencjneshort (left, right, tlbl); + if (IC_TRUE (ifx)) + { + freeForBranchAsmop (result); + freeForBranchAsmop (right); + freeForBranchAsmop (left); + emitcode ("ljmp", "%05d$", IC_TRUE (ifx)->key + 100); + emitcode ("", "%05d$:", tlbl->key + 100); + } + else + { + symbol *lbl = newiTempLabel (NULL); + emitcode ("sjmp", "%05d$", lbl->key + 100); + emitcode ("", "%05d$:", tlbl->key + 100); + freeForBranchAsmop (result); + freeForBranchAsmop (right); + freeForBranchAsmop (left); + emitcode ("ljmp", "%05d$", IC_FALSE (ifx)->key + 100); + emitcode ("", "%05d$:", lbl->key + 100); + } + } /* mark the icode as generated */ ifx->generated = 1; goto release; @@ -4358,42 +5110,42 @@ genCmpEq (iCode * ic, iCode * ifx) ((AOP_TYPE (right) == AOP_CRY) || (AOP_TYPE (right) == AOP_LIT))) { if (AOP_TYPE (right) == AOP_LIT) - { - unsigned long lit = (unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit); - if (lit == 0L) - { - emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); - emitcode ("cpl", "c"); - } - else if (lit == 1L) - { - emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); - } - else - { - emitcode ("clr", "c"); - } - /* AOP_TYPE(right) == AOP_CRY */ - } + { + unsigned long lit = (unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit); + if (lit == 0L) + { + emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); + emitcode ("cpl", "c"); + } + else if (lit == 1L) + { + emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); + } + else + { + emitcode ("clr", "c"); + } + /* AOP_TYPE(right) == AOP_CRY */ + } else - { - symbol *lbl = newiTempLabel (NULL); - emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); - emitcode ("jb", "%s,%05d$", AOP (right)->aopu.aop_dir, (lbl->key + 100)); - emitcode ("cpl", "c"); - emitcode ("", "%05d$:", (lbl->key + 100)); - } + { + symbol *lbl = newiTempLabel (NULL); + emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); + emitcode ("jb", "%s,%05d$", AOP (right)->aopu.aop_dir, (lbl->key + 100)); + emitcode ("cpl", "c"); + emitcode ("", "%05d$:", (lbl->key + 100)); + } /* c = 1 if egal */ if (AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result)) - { - outBitC (result); - goto release; - } + { + outBitC (result); + goto release; + } if (ifx) - { - genIfxJump (ifx, "c"); - goto release; - } + { + genIfxJump (ifx, "c", left, right, result); + goto release; + } /* if the result is used in an arithmetic operation then put the result in place */ outBitC (result); @@ -4402,25 +5154,25 @@ genCmpEq (iCode * ic, iCode * ifx) { gencjne (left, right, newiTempLabel (NULL)); if (AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result)) - { - aopPut (AOP (result), "a", 0); - goto release; - } + { + aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE)); + goto release; + } if (ifx) - { - genIfxJump (ifx, "a"); - goto release; - } + { + genIfxJump (ifx, "a", left, right, result); + goto release; + } /* if the result is used in an arithmetic operation then put the result in place */ if (AOP_TYPE (result) != AOP_CRY) - outAcc (result); + outAcc (result); /* leave the result in acc */ } release: - freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); + freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); freeAsmop (result, NULL, ic, TRUE); } @@ -4456,7 +5208,7 @@ hasInc (operand *op, iCode *ic,int osize) sym_link *retype = getSpec (type); iCode *lic = ic->next; int isize ; - + /* this could from a cast, e.g.: "(char xdata *) 0x7654;" */ if (!IS_SYMOP(op)) return NULL; @@ -4467,13 +5219,13 @@ hasInc (operand *op, iCode *ic,int osize) while (lic) { /* if operand of the form op = op + */ if (lic->op == '+' && isOperandEqual(IC_LEFT(lic),op) && - isOperandEqual(IC_RESULT(lic),op) && - isOperandLiteral(IC_RIGHT(lic)) && - operandLitValue(IC_RIGHT(lic)) == isize) { + isOperandEqual(IC_RESULT(lic),op) && + isOperandLiteral(IC_RIGHT(lic)) && + operandLitValue(IC_RIGHT(lic)) == isize) { return lic; } /* if the operand used or deffed */ - if (bitVectBitValue(OP_USES(op),lic->key) || (unsigned) lic->defKey == op->key) { + if (bitVectBitValue(OP_USES(op),lic->key) || lic->defKey == op->key) { return NULL; } /* if GOTO or IFX */ @@ -4519,8 +5271,8 @@ genAndOp (iCode * ic) outBitAcc (result); } - freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); + freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); freeAsmop (result, NULL, ic, TRUE); } @@ -4561,8 +5313,8 @@ genOrOp (iCode * ic) outBitAcc (result); } - freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); + freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); freeAsmop (result, NULL, ic, TRUE); } @@ -4614,7 +5366,7 @@ jumpIfTrue (iCode * ic) /* jmpTrueOrFalse - */ /*-----------------------------------------------------------------*/ static void -jmpTrueOrFalse (iCode * ic, symbol * tlbl) +jmpTrueOrFalse (iCode * ic, symbol * tlbl, operand *left, operand *right, operand *result) { // ugly but optimized by peephole if (IC_TRUE (ic)) @@ -4622,11 +5374,17 @@ jmpTrueOrFalse (iCode * ic, symbol * tlbl) symbol *nlbl = newiTempLabel (NULL); emitcode ("sjmp", "%05d$", nlbl->key + 100); emitcode ("", "%05d$:", tlbl->key + 100); + freeForBranchAsmop (result); + freeForBranchAsmop (right); + freeForBranchAsmop (left); emitcode ("ljmp", "%05d$", IC_TRUE (ic)->key + 100); emitcode ("", "%05d$:", nlbl->key + 100); } else { + freeForBranchAsmop (result); + freeForBranchAsmop (right); + freeForBranchAsmop (left); emitcode ("ljmp", "%05d$", IC_FALSE (ic)->key + 100); emitcode ("", "%05d$:", tlbl->key + 100); } @@ -4653,11 +5411,11 @@ genAnd (iCode * ic, iCode * ifx) #ifdef DEBUG_TYPE emitcode ("", "; Type res[%d] = l[%d]&r[%d]", - AOP_TYPE (result), - AOP_TYPE (left), AOP_TYPE (right)); + AOP_TYPE (result), + AOP_TYPE (left), AOP_TYPE (right)); emitcode ("", "; Size res[%d] = l[%d]&r[%d]", - AOP_SIZE (result), - AOP_SIZE (left), AOP_SIZE (right)); + AOP_SIZE (result), + AOP_SIZE (left), AOP_SIZE (right)); #endif /* if left is a literal & right is not then exchange them */ @@ -4669,7 +5427,7 @@ genAnd (iCode * ic, iCode * ifx) left = tmp; } - /* if result = right then exchange them */ + /* if result = right then exchange left and right */ if (sameRegs (AOP (result), AOP (right))) { operand *tmp = right; @@ -4696,54 +5454,54 @@ genAnd (iCode * ic, iCode * ifx) { // c = bit & literal; if (AOP_TYPE (right) == AOP_LIT) - { - if (lit & 1) - { - if (size && sameRegs (AOP (result), AOP (left))) - // no change - goto release; - emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); - } - else - { - // bit(result) = 0; - if (size && (AOP_TYPE (result) == AOP_CRY)) - { - emitcode ("clr", "%s", AOP (result)->aopu.aop_dir); - goto release; - } - if ((AOP_TYPE (result) == AOP_CRY) && ifx) - { - jumpIfTrue (ifx); - goto release; - } - emitcode ("clr", "c"); - } - } + { + if (lit & 1) + { + if (size && sameRegs (AOP (result), AOP (left))) + // no change + goto release; + emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); + } + else + { + // bit(result) = 0; + if (size && (AOP_TYPE (result) == AOP_CRY)) + { + emitcode ("clr", "%s", AOP (result)->aopu.aop_dir); + goto release; + } + if ((AOP_TYPE (result) == AOP_CRY) && ifx) + { + jumpIfTrue (ifx); + goto release; + } + emitcode ("clr", "c"); + } + } else - { - if (AOP_TYPE (right) == AOP_CRY) - { - // c = bit & bit; - emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir); - emitcode ("anl", "c,%s", AOP (left)->aopu.aop_dir); - } - else - { - // c = bit & val; - MOVA (aopGet (AOP (right), 0, FALSE, FALSE)); - // c = lsb - emitcode ("rrc", "a"); - emitcode ("anl", "c,%s", AOP (left)->aopu.aop_dir); - } - } + { + if (AOP_TYPE (right) == AOP_CRY) + { + // c = bit & bit; + emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir); + emitcode ("anl", "c,%s", AOP (left)->aopu.aop_dir); + } + else + { + // c = bit & val; + MOVA (aopGet (AOP (right), 0, FALSE, FALSE)); + // c = lsb + emitcode ("rrc", "a"); + emitcode ("anl", "c,%s", AOP (left)->aopu.aop_dir); + } + } // bit = c // val = c if (size) - outBitC (result); + outBitC (result); // if(bit & ...) else if ((AOP_TYPE (result) == AOP_CRY) && ifx) - genIfxJump (ifx, "c"); + genIfxJump (ifx, "c", left, right, result); goto release; } @@ -4756,61 +5514,68 @@ genAnd (iCode * ic, iCode * ifx) int posbit = isLiteralBit (lit); /* left & 2^n */ if (posbit) - { - posbit--; - MOVA (aopGet (AOP (left), posbit >> 3, FALSE, FALSE)); - // bit = left & 2^n - if (size) - emitcode ("mov", "c,acc.%d", posbit & 0x07); - // if(left & 2^n) - else - { - if (ifx) - { - sprintf (buffer, "acc.%d", posbit & 0x07); - genIfxJump (ifx, buffer); - } - goto release; - } - } + { + posbit--; + MOVA (aopGet (AOP (left), posbit >> 3, FALSE, FALSE)); + // bit = left & 2^n + if (size) + emitcode ("mov", "c,acc.%d", posbit & 0x07); + // if(left & 2^n) + else + { + if (ifx) + { + SNPRINTF (buffer, sizeof(buffer), + "acc.%d", posbit & 0x07); + genIfxJump (ifx, buffer, left, right, result); + } + else + {// what is this case? just found it in ds390/gen.c + emitcode ("anl","a,#!constbyte",1 << (posbit & 0x07)); + } + goto release; + } + } else - { - symbol *tlbl = newiTempLabel (NULL); - int sizel = AOP_SIZE (left); - if (size) - emitcode ("setb", "c"); - while (sizel--) - { - if ((bytelit = ((lit >> (offset * 8)) & 0x0FFL)) != 0x0L) - { - MOVA (aopGet (AOP (left), offset, FALSE, FALSE)); - // byte == 2^n ? - if ((posbit = isLiteralBit (bytelit)) != 0) - emitcode ("jb", "acc.%d,%05d$", (posbit - 1) & 0x07, tlbl->key + 100); - else - { - if (bytelit != 0x0FFL) - emitcode ("anl", "a,%s", - aopGet (AOP (right), offset, FALSE, TRUE)); - emitcode ("jnz", "%05d$", tlbl->key + 100); - } - } - offset++; - } - // bit = left & literal - if (size) - { - emitcode ("clr", "c"); - emitcode ("", "%05d$:", tlbl->key + 100); - } - // if(left & literal) - else - { - if (ifx) - jmpTrueOrFalse (ifx, tlbl); - goto release; - } - } + { + symbol *tlbl = newiTempLabel (NULL); + int sizel = AOP_SIZE (left); + if (size) + emitcode ("setb", "c"); + while (sizel--) + { + if ((bytelit = ((lit >> (offset * 8)) & 0x0FFL)) != 0x0L) + { + MOVA (aopGet (AOP (left), offset, FALSE, FALSE)); + // byte == 2^n ? + if ((posbit = isLiteralBit (bytelit)) != 0) + emitcode ("jb", "acc.%d,%05d$", (posbit - 1) & 0x07, tlbl->key + 100); + else + { + if (bytelit != 0x0FFL) + emitcode ("anl", "a,%s", + aopGet (AOP (right), offset, FALSE, TRUE)); + emitcode ("jnz", "%05d$", tlbl->key + 100); + } + } + offset++; + } + // bit = left & literal + if (size) + { + emitcode ("clr", "c"); + emitcode ("", "%05d$:", tlbl->key + 100); + } + // if(left & literal) + else + { + if (ifx) + jmpTrueOrFalse (ifx, tlbl, left, right, result); + else + emitcode ("", "%05d$:", tlbl->key + 100); + goto release; + } + } outBitC (result); goto release; } @@ -4819,123 +5584,138 @@ genAnd (iCode * ic, iCode * ifx) if (sameRegs (AOP (result), AOP (left))) { for (; size--; offset++) - { - if (AOP_TYPE (right) == AOP_LIT) - { - if ((bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL)) == 0x0FF) - continue; - else if (bytelit == 0) - aopPut (AOP (result), zero, offset); - else if (IS_AOP_PREG (result)) - { - MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); - emitcode ("anl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE)); - aopPut (AOP (result), "a", offset); - } - else - emitcode ("anl", "%s,%s", - aopGet (AOP (left), offset, FALSE, TRUE), - aopGet (AOP (right), offset, FALSE, FALSE)); - } - else - { - if (AOP_TYPE (left) == AOP_ACC) - emitcode ("anl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE)); - else - { - MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); - if (IS_AOP_PREG (result)) - { - emitcode ("anl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE)); - aopPut (AOP (result), "a", offset); - - } - else - emitcode ("anl", "%s,a", - aopGet (AOP (left), offset, FALSE, TRUE)); - } - } - } + { + if (AOP_TYPE (right) == AOP_LIT) + { + bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL); + if (bytelit == 0x0FF) + { + /* dummy read of volatile operand */ + if (isOperandVolatile (left, FALSE)) + MOVA (aopGet (AOP (left), offset, FALSE, FALSE)); + else + continue; + } + else if (bytelit == 0) + { + aopPut (AOP (result), zero, offset, isOperandVolatile (result, FALSE)); + } + else if (IS_AOP_PREG (result)) + { + MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); + emitcode ("anl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE)); + aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE)); + } + else + emitcode ("anl", "%s,%s", + aopGet (AOP (left), offset, FALSE, TRUE), + aopGet (AOP (right), offset, FALSE, FALSE)); + } + else + { + if (AOP_TYPE (left) == AOP_ACC) + emitcode ("anl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE)); + else + { + MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); + if (IS_AOP_PREG (result)) + { + emitcode ("anl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE)); + aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE)); + } + else + emitcode ("anl", "%s,a", + aopGet (AOP (left), offset, FALSE, TRUE)); + } + } + } } else { // left & result in different registers if (AOP_TYPE (result) == AOP_CRY) - { - // result = bit - // if(size), result in bit - // if(!size && ifx), conditional oper: if(left & right) - symbol *tlbl = newiTempLabel (NULL); - int sizer = min (AOP_SIZE (left), AOP_SIZE (right)); - if (size) - emitcode ("setb", "c"); - while (sizer--) - { - if (AOP_TYPE(right)==AOP_REG && AOP_TYPE(left)==AOP_ACC) { - emitcode ("anl", "a,%s", - aopGet (AOP (right), offset, FALSE, FALSE)); - } else { - if (AOP_TYPE(left)==AOP_ACC) { - emitcode("mov", "b,a"); - MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); - emitcode("anl", "a,b"); - }else { - MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); - emitcode ("anl", "a,%s", - aopGet (AOP (left), offset, FALSE, FALSE)); - } - } - emitcode ("jnz", "%05d$", tlbl->key + 100); - offset++; - } - if (size) - { - CLRC; - emitcode ("", "%05d$:", tlbl->key + 100); - outBitC (result); - } - else if (ifx) - jmpTrueOrFalse (ifx, tlbl); - } + { + // result = bit + // if(size), result in bit + // if(!size && ifx), conditional oper: if(left & right) + symbol *tlbl = newiTempLabel (NULL); + int sizer = min (AOP_SIZE (left), AOP_SIZE (right)); + if (size) + emitcode ("setb", "c"); + while (sizer--) + { + if (AOP_TYPE(right)==AOP_REG && AOP_TYPE(left)==AOP_ACC) { + emitcode ("anl", "a,%s", + aopGet (AOP (right), offset, FALSE, FALSE)); + } else { + if (AOP_TYPE(left)==AOP_ACC) { + emitcode("mov", "b,a"); + MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); + emitcode("anl", "a,b"); + }else { + MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); + emitcode ("anl", "a,%s", + aopGet (AOP (left), offset, FALSE, FALSE)); + } + } + emitcode ("jnz", "%05d$", tlbl->key + 100); + offset++; + } + if (size) + { + CLRC; + emitcode ("", "%05d$:", tlbl->key + 100); + outBitC (result); + } + else if (ifx) + jmpTrueOrFalse (ifx, tlbl, left, right, result); + else + emitcode ("", "%05d$:", tlbl->key + 100); + } else - { - for (; (size--); offset++) - { - // normal case - // result = left & right - if (AOP_TYPE (right) == AOP_LIT) - { - if ((bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL)) == 0x0FF) - { - aopPut (AOP (result), - aopGet (AOP (left), offset, FALSE, FALSE), - offset); - continue; - } - else if (bytelit == 0) - { - aopPut (AOP (result), zero, offset); - continue; - } - } - // faster than result <- left, anl result,right - // and better if result is SFR - if (AOP_TYPE (left) == AOP_ACC) - emitcode ("anl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE)); - else - { - MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); - emitcode ("anl", "a,%s", - aopGet (AOP (left), offset, FALSE, FALSE)); - } - aopPut (AOP (result), "a", offset); - } - } + { + for (; (size--); offset++) + { + // normal case + // result = left & right + if (AOP_TYPE (right) == AOP_LIT) + { + bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL); + if (bytelit == 0x0FF) + { + aopPut (AOP (result), + aopGet (AOP (left), offset, FALSE, FALSE), + offset, + isOperandVolatile (result, FALSE)); + continue; + } + else if (bytelit == 0) + { + /* dummy read of volatile operand */ + if (isOperandVolatile (left, FALSE)) + MOVA (aopGet (AOP (left), offset, FALSE, FALSE)); + aopPut (AOP (result), zero, offset, isOperandVolatile (result, FALSE)); + continue; + } + } + // faster than result <- left, anl result,right + // and better if result is SFR + if (AOP_TYPE (left) == AOP_ACC) + emitcode ("anl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE)); + else + { + MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); + emitcode ("anl", "a,%s", + aopGet (AOP (left), offset, FALSE, FALSE)); + } + aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE)); + } + } } release: - freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); + freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); freeAsmop (result, NULL, ic, TRUE); } @@ -4948,6 +5728,7 @@ genOr (iCode * ic, iCode * ifx) operand *left, *right, *result; int size, offset = 0; unsigned long lit = 0L; + int bytelit = 0; D(emitcode ("; genOr","")); @@ -4957,11 +5738,11 @@ genOr (iCode * ic, iCode * ifx) #ifdef DEBUG_TYPE emitcode ("", "; Type res[%d] = l[%d]&r[%d]", - AOP_TYPE (result), - AOP_TYPE (left), AOP_TYPE (right)); + AOP_TYPE (result), + AOP_TYPE (left), AOP_TYPE (right)); emitcode ("", "; Size res[%d] = l[%d]&r[%d]", - AOP_SIZE (result), - AOP_SIZE (left), AOP_SIZE (right)); + AOP_SIZE (result), + AOP_SIZE (left), AOP_SIZE (right)); #endif /* if left is a literal & right is not then exchange them */ @@ -4999,66 +5780,66 @@ genOr (iCode * ic, iCode * ifx) if (AOP_TYPE (left) == AOP_CRY) { if (AOP_TYPE (right) == AOP_LIT) - { - // c = bit | literal; - if (lit) - { - // lit != 0 => result = 1 - if (AOP_TYPE (result) == AOP_CRY) - { - if (size) - emitcode ("setb", "%s", AOP (result)->aopu.aop_dir); - else if (ifx) - continueIfTrue (ifx); - goto release; - } - emitcode ("setb", "c"); - } - else - { - // lit == 0 => result = left - if (size && sameRegs (AOP (result), AOP (left))) - goto release; - emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); - } - } + { + // c = bit | literal; + if (lit) + { + // lit != 0 => result = 1 + if (AOP_TYPE (result) == AOP_CRY) + { + if (size) + emitcode ("setb", "%s", AOP (result)->aopu.aop_dir); + else if (ifx) + continueIfTrue (ifx); + goto release; + } + emitcode ("setb", "c"); + } + else + { + // lit == 0 => result = left + if (size && sameRegs (AOP (result), AOP (left))) + goto release; + emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); + } + } else - { - if (AOP_TYPE (right) == AOP_CRY) - { - // c = bit | bit; - emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir); - emitcode ("orl", "c,%s", AOP (left)->aopu.aop_dir); - } - else - { - // c = bit | val; - symbol *tlbl = newiTempLabel (NULL); - if (!((AOP_TYPE (result) == AOP_CRY) && ifx)) - emitcode ("setb", "c"); - emitcode ("jb", "%s,%05d$", - AOP (left)->aopu.aop_dir, tlbl->key + 100); - toBoolean (right); - emitcode ("jnz", "%05d$", tlbl->key + 100); - if ((AOP_TYPE (result) == AOP_CRY) && ifx) - { - jmpTrueOrFalse (ifx, tlbl); - goto release; - } - else - { - CLRC; - emitcode ("", "%05d$:", tlbl->key + 100); - } - } - } + { + if (AOP_TYPE (right) == AOP_CRY) + { + // c = bit | bit; + emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir); + emitcode ("orl", "c,%s", AOP (left)->aopu.aop_dir); + } + else + { + // c = bit | val; + symbol *tlbl = newiTempLabel (NULL); + if (!((AOP_TYPE (result) == AOP_CRY) && ifx)) + emitcode ("setb", "c"); + emitcode ("jb", "%s,%05d$", + AOP (left)->aopu.aop_dir, tlbl->key + 100); + toBoolean (right); + emitcode ("jnz", "%05d$", tlbl->key + 100); + if ((AOP_TYPE (result) == AOP_CRY) && ifx) + { + jmpTrueOrFalse (ifx, tlbl, left, right, result); + goto release; + } + else + { + CLRC; + emitcode ("", "%05d$:", tlbl->key + 100); + } + } + } // bit = c // val = c if (size) - outBitC (result); + outBitC (result); // if(bit | ...) else if ((AOP_TYPE (result) == AOP_CRY) && ifx) - genIfxJump (ifx, "c"); + genIfxJump (ifx, "c", left, right, result); goto release; } @@ -5069,33 +5850,33 @@ genOr (iCode * ic, iCode * ifx) (AOP_TYPE (left) != AOP_CRY)) { if (lit) - { - // result = 1 - if (size) - emitcode ("setb", "%s", AOP (result)->aopu.aop_dir); - else - continueIfTrue (ifx); - goto release; - } + { + // result = 1 + if (size) + emitcode ("setb", "%s", AOP (result)->aopu.aop_dir); + else + continueIfTrue (ifx); + goto release; + } else - { - // lit = 0, result = boolean(left) - if (size) - emitcode ("setb", "c"); - toBoolean (right); - if (size) - { - symbol *tlbl = newiTempLabel (NULL); - emitcode ("jnz", "%05d$", tlbl->key + 100); - CLRC; - emitcode ("", "%05d$:", tlbl->key + 100); - } - else - { - genIfxJump (ifx, "a"); - goto release; - } - } + { + // lit = 0, result = boolean(left) + if (size) + emitcode ("setb", "c"); + toBoolean (right); + if (size) + { + symbol *tlbl = newiTempLabel (NULL); + emitcode ("jnz", "%05d$", tlbl->key + 100); + CLRC; + emitcode ("", "%05d$:", tlbl->key + 100); + } + else + { + genIfxJump (ifx, "a", left, right, result); + goto release; + } + } outBitC (result); goto release; } @@ -5104,107 +5885,136 @@ genOr (iCode * ic, iCode * ifx) if (sameRegs (AOP (result), AOP (left))) { for (; size--; offset++) - { - if (AOP_TYPE (right) == AOP_LIT) - { - if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L) - continue; - else if (IS_AOP_PREG (left)) - { - MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); - emitcode ("orl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE)); - aopPut (AOP (result), "a", offset); - } - else - emitcode ("orl", "%s,%s", - aopGet (AOP (left), offset, FALSE, TRUE), - aopGet (AOP (right), offset, FALSE, FALSE)); - } - else - { - if (AOP_TYPE (left) == AOP_ACC) - emitcode ("orl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE)); - else - { - MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); - if (IS_AOP_PREG (left)) - { - emitcode ("orl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE)); - aopPut (AOP (result), "a", offset); - } - else - emitcode ("orl", "%s,a", - aopGet (AOP (left), offset, FALSE, TRUE)); - } - } - } + { + if (AOP_TYPE (right) == AOP_LIT) + { + bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL); + if (bytelit == 0) + { + /* dummy read of volatile operand */ + if (isOperandVolatile (left, FALSE)) + MOVA (aopGet (AOP (left), offset, FALSE, FALSE)); + else + continue; + } + else if (bytelit == 0x0FF) + { + aopPut (AOP (result), "#0xFF", offset, isOperandVolatile (result, FALSE)); + } + else if (IS_AOP_PREG (left)) + { + MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); + emitcode ("orl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE)); + aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE)); + } + else + { + emitcode ("orl", "%s,%s", + aopGet (AOP (left), offset, FALSE, TRUE), + aopGet (AOP (right), offset, FALSE, FALSE)); + } + } + else + { + if (AOP_TYPE (left) == AOP_ACC) + emitcode ("orl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE)); + else + { + MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); + if (IS_AOP_PREG (left)) + { + emitcode ("orl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE)); + aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE)); + } + else + { + emitcode ("orl", "%s,a", + aopGet (AOP (left), offset, FALSE, TRUE)); + } + } + } + } } else { // left & result in different registers if (AOP_TYPE (result) == AOP_CRY) - { - // result = bit - // if(size), result in bit - // if(!size && ifx), conditional oper: if(left | right) - symbol *tlbl = newiTempLabel (NULL); - int sizer = max (AOP_SIZE (left), AOP_SIZE (right)); - if (size) - emitcode ("setb", "c"); - while (sizer--) - { - if (AOP_TYPE(right)==AOP_REG && AOP_TYPE(left)==AOP_ACC) { - emitcode ("orl", "a,%s", - aopGet (AOP (right), offset, FALSE, FALSE)); - } else { - MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); - emitcode ("orl", "a,%s", - aopGet (AOP (left), offset, FALSE, FALSE)); - } - emitcode ("jnz", "%05d$", tlbl->key + 100); - offset++; - } - if (size) - { - CLRC; - emitcode ("", "%05d$:", tlbl->key + 100); - outBitC (result); - } - else if (ifx) - jmpTrueOrFalse (ifx, tlbl); - } + { + // result = bit + // if(size), result in bit + // if(!size && ifx), conditional oper: if(left | right) + symbol *tlbl = newiTempLabel (NULL); + int sizer = max (AOP_SIZE (left), AOP_SIZE (right)); + if (size) + emitcode ("setb", "c"); + while (sizer--) + { + if (AOP_TYPE(right)==AOP_REG && AOP_TYPE(left)==AOP_ACC) { + emitcode ("orl", "a,%s", + aopGet (AOP (right), offset, FALSE, FALSE)); + } else { + MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); + emitcode ("orl", "a,%s", + aopGet (AOP (left), offset, FALSE, FALSE)); + } + emitcode ("jnz", "%05d$", tlbl->key + 100); + offset++; + } + if (size) + { + CLRC; + emitcode ("", "%05d$:", tlbl->key + 100); + outBitC (result); + } + else if (ifx) + jmpTrueOrFalse (ifx, tlbl, left, right, result); + else + emitcode ("", "%05d$:", tlbl->key + 100); + } else - for (; (size--); offset++) - { - // normal case - // result = left & right - if (AOP_TYPE (right) == AOP_LIT) - { - if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L) - { - aopPut (AOP (result), - aopGet (AOP (left), offset, FALSE, FALSE), - offset); - continue; - } - } - // faster than result <- left, anl result,right - // and better if result is SFR - if (AOP_TYPE (left) == AOP_ACC) - emitcode ("orl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE)); - else - { - MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); - emitcode ("orl", "a,%s", - aopGet (AOP (left), offset, FALSE, FALSE)); - } - aopPut (AOP (result), "a", offset); - } + { + for (; (size--); offset++) + { + // normal case + // result = left | right + if (AOP_TYPE (right) == AOP_LIT) + { + bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL); + if (bytelit == 0) + { + aopPut (AOP (result), + aopGet (AOP (left), offset, FALSE, FALSE), + offset, + isOperandVolatile (result, FALSE)); + continue; + } + else if (bytelit == 0x0FF) + { + /* dummy read of volatile operand */ + if (isOperandVolatile (left, FALSE)) + MOVA (aopGet (AOP (left), offset, FALSE, FALSE)); + aopPut (AOP (result), "#0xFF", offset, isOperandVolatile (result, FALSE)); + continue; + } + } + // faster than result <- left, anl result,right + // and better if result is SFR + if (AOP_TYPE (left) == AOP_ACC) + emitcode ("orl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE)); + else + { + MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); + emitcode ("orl", "a,%s", + aopGet (AOP (left), offset, FALSE, FALSE)); + } + aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE)); + } + } } release: - freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); + freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); freeAsmop (result, NULL, ic, TRUE); } @@ -5217,6 +6027,7 @@ genXor (iCode * ic, iCode * ifx) operand *left, *right, *result; int size, offset = 0; unsigned long lit = 0L; + int bytelit = 0; D(emitcode ("; genXor","")); @@ -5226,11 +6037,11 @@ genXor (iCode * ic, iCode * ifx) #ifdef DEBUG_TYPE emitcode ("", "; Type res[%d] = l[%d]&r[%d]", - AOP_TYPE (result), - AOP_TYPE (left), AOP_TYPE (right)); + AOP_TYPE (result), + AOP_TYPE (left), AOP_TYPE (right)); emitcode ("", "; Size res[%d] = l[%d]&r[%d]", - AOP_SIZE (result), - AOP_SIZE (left), AOP_SIZE (right)); + AOP_SIZE (result), + AOP_SIZE (left), AOP_SIZE (right)); #endif /* if left is a literal & right is not || @@ -5269,202 +6080,215 @@ genXor (iCode * ic, iCode * ifx) if (AOP_TYPE (left) == AOP_CRY) { if (AOP_TYPE (right) == AOP_LIT) - { - // c = bit & literal; - if (lit >> 1) - { - // lit>>1 != 0 => result = 1 - if (AOP_TYPE (result) == AOP_CRY) - { - if (size) - emitcode ("setb", "%s", AOP (result)->aopu.aop_dir); - else if (ifx) - continueIfTrue (ifx); - goto release; - } - emitcode ("setb", "c"); - } - else - { - // lit == (0 or 1) - if (lit == 0) - { - // lit == 0, result = left - if (size && sameRegs (AOP (result), AOP (left))) - goto release; - emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); - } - else - { - // lit == 1, result = not(left) - if (size && sameRegs (AOP (result), AOP (left))) - { - emitcode ("cpl", "%s", AOP (result)->aopu.aop_dir); - goto release; - } - else - { - emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); - emitcode ("cpl", "c"); - } - } - } - - } + { + // c = bit & literal; + if (lit >> 1) + { + // lit>>1 != 0 => result = 1 + if (AOP_TYPE (result) == AOP_CRY) + { + if (size) + emitcode ("setb", "%s", AOP (result)->aopu.aop_dir); + else if (ifx) + continueIfTrue (ifx); + goto release; + } + emitcode ("setb", "c"); + } + else + { + // lit == (0 or 1) + if (lit == 0) + { + // lit == 0, result = left + if (size && sameRegs (AOP (result), AOP (left))) + goto release; + emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); + } + else + { + // lit == 1, result = not(left) + if (size && sameRegs (AOP (result), AOP (left))) + { + emitcode ("cpl", "%s", AOP (result)->aopu.aop_dir); + goto release; + } + else + { + emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir); + emitcode ("cpl", "c"); + } + } + } + + } else - { - // right != literal - symbol *tlbl = newiTempLabel (NULL); - if (AOP_TYPE (right) == AOP_CRY) - { - // c = bit ^ bit; - emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir); - } - else - { - int sizer = AOP_SIZE (right); - // c = bit ^ val - // if val>>1 != 0, result = 1 - emitcode ("setb", "c"); - while (sizer) - { - MOVA (aopGet (AOP (right), sizer - 1, FALSE, FALSE)); - if (sizer == 1) - // test the msb of the lsb - emitcode ("anl", "a,#0xfe"); - emitcode ("jnz", "%05d$", tlbl->key + 100); - sizer--; - } - // val = (0,1) - emitcode ("rrc", "a"); - } - emitcode ("jnb", "%s,%05d$", AOP (left)->aopu.aop_dir, (tlbl->key + 100)); - emitcode ("cpl", "c"); - emitcode ("", "%05d$:", (tlbl->key + 100)); - } + { + // right != literal + symbol *tlbl = newiTempLabel (NULL); + if (AOP_TYPE (right) == AOP_CRY) + { + // c = bit ^ bit; + emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir); + } + else + { + int sizer = AOP_SIZE (right); + // c = bit ^ val + // if val>>1 != 0, result = 1 + emitcode ("setb", "c"); + while (sizer) + { + MOVA (aopGet (AOP (right), sizer - 1, FALSE, FALSE)); + if (sizer == 1) + // test the msb of the lsb + emitcode ("anl", "a,#0xfe"); + emitcode ("jnz", "%05d$", tlbl->key + 100); + sizer--; + } + // val = (0,1) + emitcode ("rrc", "a"); + } + emitcode ("jnb", "%s,%05d$", AOP (left)->aopu.aop_dir, (tlbl->key + 100)); + emitcode ("cpl", "c"); + emitcode ("", "%05d$:", (tlbl->key + 100)); + } // bit = c // val = c if (size) - outBitC (result); + outBitC (result); // if(bit | ...) else if ((AOP_TYPE (result) == AOP_CRY) && ifx) - genIfxJump (ifx, "c"); + genIfxJump (ifx, "c", left, right, result); goto release; } + /* if left is same as result */ if (sameRegs (AOP (result), AOP (left))) { - /* if left is same as result */ for (; size--; offset++) - { - if (AOP_TYPE (right) == AOP_LIT) - { - if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L) - continue; - else if (IS_AOP_PREG (left)) - { - MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); - emitcode ("xrl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE)); - aopPut (AOP (result), "a", offset); - } - else - emitcode ("xrl", "%s,%s", - aopGet (AOP (left), offset, FALSE, TRUE), - aopGet (AOP (right), offset, FALSE, FALSE)); - } - else - { - if (AOP_TYPE (left) == AOP_ACC) - emitcode ("xrl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE)); - else - { - MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); - if (IS_AOP_PREG (left)) - { - emitcode ("xrl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE)); - aopPut (AOP (result), "a", offset); - } - else - emitcode ("xrl", "%s,a", - aopGet (AOP (left), offset, FALSE, TRUE)); - } - } - } + { + if (AOP_TYPE (right) == AOP_LIT) + { + bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL); + if (bytelit == 0) + { + /* dummy read of volatile operand */ + if (isOperandVolatile (left, FALSE)) + MOVA (aopGet (AOP (left), offset, FALSE, FALSE)); + else + continue; + } + else if (IS_AOP_PREG (left)) + { + MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); + emitcode ("xrl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE)); + aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE)); + } + else + { + emitcode ("xrl", "%s,%s", + aopGet (AOP (left), offset, FALSE, TRUE), + aopGet (AOP (right), offset, FALSE, FALSE)); + } + } + else + { + if (AOP_TYPE (left) == AOP_ACC) + emitcode ("xrl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE)); + else + { + MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); + if (IS_AOP_PREG (left)) + { + emitcode ("xrl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE)); + aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE)); + } + else + emitcode ("xrl", "%s,a", + aopGet (AOP (left), offset, FALSE, TRUE)); + } + } + } } else { // left & result in different registers if (AOP_TYPE (result) == AOP_CRY) - { - // result = bit - // if(size), result in bit - // if(!size && ifx), conditional oper: if(left ^ right) - symbol *tlbl = newiTempLabel (NULL); - int sizer = max (AOP_SIZE (left), AOP_SIZE (right)); - if (size) - emitcode ("setb", "c"); - while (sizer--) - { - if ((AOP_TYPE (right) == AOP_LIT) && - (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)) - { - MOVA (aopGet (AOP (left), offset, FALSE, FALSE)); - } - else - { - if (AOP_TYPE(right)==AOP_REG && AOP_TYPE(left)==AOP_ACC) { - emitcode ("xrl", "a,%s", - aopGet (AOP (right), offset, FALSE, FALSE)); - } else { - MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); - emitcode ("xrl", "a,%s", - aopGet (AOP (left), offset, FALSE, FALSE)); - } - } - emitcode ("jnz", "%05d$", tlbl->key + 100); - offset++; - } - if (size) - { - CLRC; - emitcode ("", "%05d$:", tlbl->key + 100); - outBitC (result); - } - else if (ifx) - jmpTrueOrFalse (ifx, tlbl); - } + { + // result = bit + // if(size), result in bit + // if(!size && ifx), conditional oper: if(left ^ right) + symbol *tlbl = newiTempLabel (NULL); + int sizer = max (AOP_SIZE (left), AOP_SIZE (right)); + if (size) + emitcode ("setb", "c"); + while (sizer--) + { + if ((AOP_TYPE (right) == AOP_LIT) && + (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)) + { + MOVA (aopGet (AOP (left), offset, FALSE, FALSE)); + } + else + { + if (AOP_TYPE(right)==AOP_REG && AOP_TYPE(left)==AOP_ACC) { + emitcode ("xrl", "a,%s", + aopGet (AOP (right), offset, FALSE, FALSE)); + } else { + MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); + emitcode ("xrl", "a,%s", + aopGet (AOP (left), offset, FALSE, FALSE)); + } + } + emitcode ("jnz", "%05d$", tlbl->key + 100); + offset++; + } + if (size) + { + CLRC; + emitcode ("", "%05d$:", tlbl->key + 100); + outBitC (result); + } + else if (ifx) + jmpTrueOrFalse (ifx, tlbl, left, right, result); + } else - for (; (size--); offset++) - { - // normal case - // result = left & right - if (AOP_TYPE (right) == AOP_LIT) - { - if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L) - { - aopPut (AOP (result), - aopGet (AOP (left), offset, FALSE, FALSE), - offset); - continue; - } - } - // faster than result <- left, anl result,right - // and better if result is SFR - if (AOP_TYPE (left) == AOP_ACC) - emitcode ("xrl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE)); - else - { - MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); - emitcode ("xrl", "a,%s", - aopGet (AOP (left), offset, FALSE, TRUE)); - } - aopPut (AOP (result), "a", offset); - } + { + for (; (size--); offset++) + { + // normal case + // result = left & right + if (AOP_TYPE (right) == AOP_LIT) + { + bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL); + if (bytelit == 0) + { + aopPut (AOP (result), + aopGet (AOP (left), offset, FALSE, FALSE), + offset, + isOperandVolatile (result, FALSE)); + continue; + } + } + // faster than result <- left, anl result,right + // and better if result is SFR + if (AOP_TYPE (left) == AOP_ACC) + emitcode ("xrl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE)); + else + { + MOVA (aopGet (AOP (right), offset, FALSE, FALSE)); + emitcode ("xrl", "a,%s", + aopGet (AOP (left), offset, FALSE, TRUE)); + } + aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE)); + } + } } release: - freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); + freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE)); freeAsmop (result, NULL, ic, TRUE); } @@ -5487,24 +6311,25 @@ genInline (iCode * ic) while (*bp) { if (*bp == '\n') - { - *bp++ = '\0'; - emitcode (bp1, ""); - bp1 = bp; - } + { + *bp++ = '\0'; + emitcode (bp1, ""); + bp1 = bp; + } else - { - if (*bp == ':') - { - bp++; - *bp = '\0'; - bp++; - emitcode (bp1, ""); - bp1 = bp; - } - else - bp++; - } + { + /* Add \n for labels, not dirs such as c:\mydir */ + if ( (*bp == ':') && (isspace(bp[1])) ) + { + bp++; + *bp = '\0'; + bp++; + emitcode (bp1, ""); + bp1 = bp; + } + else + bp++; + } } if (bp1 != bp) emitcode (bp1, ""); @@ -5546,7 +6371,7 @@ genRRC (iCode * ic) MOVA (l); emitcode ("rrc", "a"); if (AOP_SIZE (result) > 1) - aopPut (AOP (result), "a", offset--); + aopPut (AOP (result), "a", offset--, isOperandVolatile (result, FALSE)); } /* now we need to put the carry into the highest order byte of the result */ @@ -5557,7 +6382,7 @@ genRRC (iCode * ic) } emitcode ("mov", "acc.7,c"); release: - aopPut (AOP (result), "a", AOP_SIZE (result) - 1); + aopPut (AOP (result), "a", AOP_SIZE (result) - 1, isOperandVolatile (result, FALSE)); freeAsmop (left, NULL, ic, TRUE); freeAsmop (result, NULL, ic, TRUE); } @@ -5588,20 +6413,20 @@ genRLC (iCode * ic) l = aopGet (AOP (left), offset, FALSE, FALSE); MOVA (l); if (size == 0) { /* special case for 1 byte */ - emitcode("rl","a"); - goto release; + emitcode("rl","a"); + goto release; } emitcode ("add", "a,acc"); if (AOP_SIZE (result) > 1) - aopPut (AOP (result), "a", offset++); + aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE)); while (size--) - { - l = aopGet (AOP (left), offset, FALSE, FALSE); - MOVA (l); - emitcode ("rlc", "a"); - if (AOP_SIZE (result) > 1) - aopPut (AOP (result), "a", offset++); - } + { + l = aopGet (AOP (left), offset, FALSE, FALSE); + MOVA (l); + emitcode ("rlc", "a"); + if (AOP_SIZE (result) > 1) + aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE)); + } } /* now we need to put the carry into the highest order byte of the result */ @@ -5612,7 +6437,7 @@ genRLC (iCode * ic) } emitcode ("mov", "acc.0,c"); release: - aopPut (AOP (result), "a", 0); + aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE)); freeAsmop (left, NULL, ic, TRUE); freeAsmop (result, NULL, ic, TRUE); } @@ -5651,13 +6476,73 @@ genGetHbit (iCode * ic) freeAsmop (result, NULL, ic, TRUE); } +/*-----------------------------------------------------------------*/ +/* genSwap - generates code to swap nibbles or bytes */ +/*-----------------------------------------------------------------*/ +static void +genSwap (iCode * ic) +{ + operand *left, *result; + + D(emitcode ("; genSwap","")); + + left = IC_LEFT (ic); + result = IC_RESULT (ic); + aopOp (left, ic, FALSE); + aopOp (result, ic, FALSE); + + switch (AOP_SIZE (left)) + { + case 1: /* swap nibbles in byte */ + MOVA (aopGet (AOP (left), 0, FALSE, FALSE)); + emitcode ("swap", "a"); + aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE)); + break; + case 2: /* swap bytes in word */ + if (AOP_TYPE(left) == AOP_REG && sameRegs(AOP(left), AOP(result))) + { + MOVA (aopGet (AOP (left), 0, FALSE, FALSE)); + aopPut (AOP (result), aopGet (AOP (left), 1, FALSE, FALSE), + 0, isOperandVolatile (result, FALSE)); + aopPut (AOP (result), "a", 1, isOperandVolatile (result, FALSE)); + } + else if (operandsEqu (left, result)) + { + char * reg = "a"; + MOVA (aopGet (AOP (left), 0, FALSE, FALSE)); + if (aopGetUsesAcc(AOP (left), 1) || aopGetUsesAcc(AOP (result), 0)) + { + emitcode ("mov", "b,a"); + reg = "b"; + } + aopPut (AOP (result), aopGet (AOP (left), 1, FALSE, FALSE), + 0, isOperandVolatile (result, FALSE)); + aopPut (AOP (result), reg, 1, isOperandVolatile (result, FALSE)); + } + else + { + aopPut (AOP (result), aopGet (AOP (left), 1, FALSE, FALSE), + 0, isOperandVolatile (result, FALSE)); + aopPut (AOP (result), aopGet (AOP (left), 0, FALSE, FALSE), + 1, isOperandVolatile (result, FALSE)); + } + break; + default: + wassertl(FALSE, "unsupported SWAP operand size"); + } + + freeAsmop (left, NULL, ic, TRUE); + freeAsmop (result, NULL, ic, TRUE); +} + + /*-----------------------------------------------------------------*/ /* AccRol - rotate left accumulator by known count */ /*-----------------------------------------------------------------*/ static void AccRol (int shCount) { - shCount &= 0x0007; // shCount : 0..7 + shCount &= 0x0007; // shCount : 0..7 switch (shCount) { @@ -5700,19 +6585,19 @@ AccLsh (int shCount) if (shCount != 0) { if (shCount == 1) - emitcode ("add", "a,acc"); + emitcode ("add", "a,acc"); else if (shCount == 2) - { - emitcode ("add", "a,acc"); - emitcode ("add", "a,acc"); - } + { + emitcode ("add", "a,acc"); + emitcode ("add", "a,acc"); + } else - { - /* rotate left accumulator */ - AccRol (shCount); - /* and kill the lower order bits */ - emitcode ("anl", "a,#0x%02x", SLMask[shCount]); - } + { + /* rotate left accumulator */ + AccRol (shCount); + /* and kill the lower order bits */ + emitcode ("anl", "a,#0x%02x", SLMask[shCount]); + } } } @@ -5725,17 +6610,17 @@ AccRsh (int shCount) if (shCount != 0) { if (shCount == 1) - { - CLRC; - emitcode ("rrc", "a"); - } + { + CLRC; + emitcode ("rrc", "a"); + } else - { - /* rotate right accumulator */ - AccRol (8 - shCount); - /* and kill the higher order bits */ - emitcode ("anl", "a,#0x%02x", SRMask[shCount]); - } + { + /* rotate right accumulator */ + AccRol (8 - shCount); + /* and kill the higher order bits */ + emitcode ("anl", "a,#0x%02x", SRMask[shCount]); + } } } @@ -5749,29 +6634,29 @@ AccSRsh (int shCount) if (shCount != 0) { if (shCount == 1) - { - emitcode ("mov", "c,acc.7"); - emitcode ("rrc", "a"); - } + { + emitcode ("mov", "c,acc.7"); + emitcode ("rrc", "a"); + } else if (shCount == 2) - { - emitcode ("mov", "c,acc.7"); - emitcode ("rrc", "a"); - emitcode ("mov", "c,acc.7"); - emitcode ("rrc", "a"); - } + { + emitcode ("mov", "c,acc.7"); + emitcode ("rrc", "a"); + emitcode ("mov", "c,acc.7"); + emitcode ("rrc", "a"); + } else - { - tlbl = newiTempLabel (NULL); - /* rotate right accumulator */ - AccRol (8 - shCount); - /* and kill the higher order bits */ - emitcode ("anl", "a,#0x%02x", SRMask[shCount]); - emitcode ("jnb", "acc.%d,%05d$", 7 - shCount, tlbl->key + 100); - emitcode ("orl", "a,#0x%02x", - (unsigned char) ~SRMask[shCount]); - emitcode ("", "%05d$:", tlbl->key + 100); - } + { + tlbl = newiTempLabel (NULL); + /* rotate right accumulator */ + AccRol (8 - shCount); + /* and kill the higher order bits */ + emitcode ("anl", "a,#0x%02x", SRMask[shCount]); + emitcode ("jnb", "acc.%d,%05d$", 7 - shCount, tlbl->key + 100); + emitcode ("orl", "a,#0x%02x", + (unsigned char) ~SRMask[shCount]); + emitcode ("", "%05d$:", tlbl->key + 100); + } } } @@ -5780,8 +6665,8 @@ AccSRsh (int shCount) /*-----------------------------------------------------------------*/ static void shiftR1Left2Result (operand * left, int offl, - operand * result, int offr, - int shCount, int sign) + operand * result, int offr, + int shCount, int sign) { MOVA (aopGet (AOP (left), offl, FALSE, FALSE)); /* shift right accumulator */ @@ -5789,7 +6674,7 @@ shiftR1Left2Result (operand * left, int offl, AccSRsh (shCount); else AccRsh (shCount); - aopPut (AOP (result), "a", offr); + aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE)); } /*-----------------------------------------------------------------*/ @@ -5797,14 +6682,14 @@ shiftR1Left2Result (operand * left, int offl, /*-----------------------------------------------------------------*/ static void shiftL1Left2Result (operand * left, int offl, - operand * result, int offr, int shCount) + operand * result, int offr, int shCount) { char *l; l = aopGet (AOP (left), offl, FALSE, FALSE); MOVA (l); /* shift left accumulator */ AccLsh (shCount); - aopPut (AOP (result), "a", offr); + aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE)); } /*-----------------------------------------------------------------*/ @@ -5812,7 +6697,7 @@ shiftL1Left2Result (operand * left, int offl, /*-----------------------------------------------------------------*/ static void movLeft2Result (operand * left, int offl, - operand * result, int offr, int sign) + operand * result, int offr, int sign) { char *l; if (!sameRegs (AOP (left), AOP (result)) || (offl != offr)) @@ -5820,24 +6705,24 @@ movLeft2Result (operand * left, int offl, l = aopGet (AOP (left), offl, FALSE, FALSE); if (*l == '@' && (IS_AOP_PREG (result))) - { - emitcode ("mov", "a,%s", l); - aopPut (AOP (result), "a", offr); - } + { + emitcode ("mov", "a,%s", l); + aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE)); + } else - { - if (!sign) - aopPut (AOP (result), l, offr); - else - { - /* MSB sign in acc.7 ! */ - if (getDataSize (left) == offl + 1) - { - emitcode ("mov", "a,%s", l); - aopPut (AOP (result), "a", offr); - } - } - } + { + if (!sign) + aopPut (AOP (result), l, offr, isOperandVolatile (result, FALSE)); + else + { + /* MSB sign in acc.7 ! */ + if (getDataSize (left) == offl + 1) + { + emitcode ("mov", "a,%s", l); + aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE)); + } + } + } } } @@ -5896,62 +6781,62 @@ AccAXLsh (char *x, int shCount) break; case 3: case 4: - case 5: // AAAAABBB:CCCCCDDD + case 5: // AAAAABBB:CCCCCDDD - AccRol (shCount); // BBBAAAAA:CCCCCDDD + AccRol (shCount); // BBBAAAAA:CCCCCDDD emitcode ("anl", "a,#0x%02x", - SLMask[shCount]); // BBB00000:CCCCCDDD + SLMask[shCount]); // BBB00000:CCCCCDDD - emitcode ("xch", "a,%s", x); // CCCCCDDD:BBB00000 + emitcode ("xch", "a,%s", x); // CCCCCDDD:BBB00000 - AccRol (shCount); // DDDCCCCC:BBB00000 + AccRol (shCount); // DDDCCCCC:BBB00000 - emitcode ("xch", "a,%s", x); // BBB00000:DDDCCCCC + emitcode ("xch", "a,%s", x); // BBB00000:DDDCCCCC - emitcode ("xrl", "a,%s", x); // (BBB^DDD)CCCCC:DDDCCCCC + emitcode ("xrl", "a,%s", x); // (BBB^DDD)CCCCC:DDDCCCCC - emitcode ("xch", "a,%s", x); // DDDCCCCC:(BBB^DDD)CCCCC + emitcode ("xch", "a,%s", x); // DDDCCCCC:(BBB^DDD)CCCCC emitcode ("anl", "a,#0x%02x", - SLMask[shCount]); // DDD00000:(BBB^DDD)CCCCC + SLMask[shCount]); // DDD00000:(BBB^DDD)CCCCC - emitcode ("xch", "a,%s", x); // (BBB^DDD)CCCCC:DDD00000 + emitcode ("xch", "a,%s", x); // (BBB^DDD)CCCCC:DDD00000 - emitcode ("xrl", "a,%s", x); // BBBCCCCC:DDD00000 + emitcode ("xrl", "a,%s", x); // BBBCCCCC:DDD00000 break; - case 6: // AAAAAABB:CCCCCCDD + case 6: // AAAAAABB:CCCCCCDD emitcode ("anl", "a,#0x%02x", - SRMask[shCount]); // 000000BB:CCCCCCDD - emitcode ("mov", "c,acc.0"); // c = B - emitcode ("xch", "a,%s", x); // CCCCCCDD:000000BB + SRMask[shCount]); // 000000BB:CCCCCCDD + emitcode ("mov", "c,acc.0"); // c = B + emitcode ("xch", "a,%s", x); // CCCCCCDD:000000BB #if 0 // REMOVE ME - AccAXRrl1 (x); // BCCCCCCD:D000000B - AccAXRrl1 (x); // BBCCCCCC:DD000000 + AccAXRrl1 (x); // BCCCCCCD:D000000B + AccAXRrl1 (x); // BBCCCCCC:DD000000 #else - emitcode("rrc","a"); - emitcode("xch","a,%s", x); - emitcode("rrc","a"); - emitcode("mov","c,acc.0"); //<< get correct bit - emitcode("xch","a,%s", x); - - emitcode("rrc","a"); - emitcode("xch","a,%s", x); - emitcode("rrc","a"); - emitcode("xch","a,%s", x); + emitcode("rrc","a"); + emitcode("xch","a,%s", x); + emitcode("rrc","a"); + emitcode("mov","c,acc.0"); //<< get correct bit + emitcode("xch","a,%s", x); + + emitcode("rrc","a"); + emitcode("xch","a,%s", x); + emitcode("rrc","a"); + emitcode("xch","a,%s", x); #endif break; - case 7: // a:x <<= 7 + case 7: // a:x <<= 7 emitcode ("anl", "a,#0x%02x", - SRMask[shCount]); // 0000000B:CCCCCCCD + SRMask[shCount]); // 0000000B:CCCCCCCD - emitcode ("mov", "c,acc.0"); // c = B + emitcode ("mov", "c,acc.0"); // c = B - emitcode ("xch", "a,%s", x); // CCCCCCCD:0000000B + emitcode ("xch", "a,%s", x); // CCCCCCCD:0000000B - AccAXRrl1 (x); // BCCCCCCC:D0000000 + AccAXRrl1 (x); // BCCCCCCC:D0000000 break; default: @@ -5971,68 +6856,68 @@ AccAXRsh (char *x, int shCount) break; case 1: CLRC; - AccAXRrl1 (x); // 0->a:x + AccAXRrl1 (x); // 0->a:x break; case 2: CLRC; - AccAXRrl1 (x); // 0->a:x + AccAXRrl1 (x); // 0->a:x CLRC; - AccAXRrl1 (x); // 0->a:x + AccAXRrl1 (x); // 0->a:x break; case 3: case 4: - case 5: // AAAAABBB:CCCCCDDD = a:x + case 5: // AAAAABBB:CCCCCDDD = a:x - AccRol (8 - shCount); // BBBAAAAA:DDDCCCCC + AccRol (8 - shCount); // BBBAAAAA:DDDCCCCC - emitcode ("xch", "a,%s", x); // CCCCCDDD:BBBAAAAA + emitcode ("xch", "a,%s", x); // CCCCCDDD:BBBAAAAA - AccRol (8 - shCount); // DDDCCCCC:BBBAAAAA + AccRol (8 - shCount); // DDDCCCCC:BBBAAAAA emitcode ("anl", "a,#0x%02x", - SRMask[shCount]); // 000CCCCC:BBBAAAAA + SRMask[shCount]); // 000CCCCC:BBBAAAAA - emitcode ("xrl", "a,%s", x); // BBB(CCCCC^AAAAA):BBBAAAAA + emitcode ("xrl", "a,%s", x); // BBB(CCCCC^AAAAA):BBBAAAAA - emitcode ("xch", "a,%s", x); // BBBAAAAA:BBB(CCCCC^AAAAA) + emitcode ("xch", "a,%s", x); // BBBAAAAA:BBB(CCCCC^AAAAA) emitcode ("anl", "a,#0x%02x", - SRMask[shCount]); // 000AAAAA:BBB(CCCCC^AAAAA) + SRMask[shCount]); // 000AAAAA:BBB(CCCCC^AAAAA) - emitcode ("xch", "a,%s", x); // BBB(CCCCC^AAAAA):000AAAAA + emitcode ("xch", "a,%s", x); // BBB(CCCCC^AAAAA):000AAAAA - emitcode ("xrl", "a,%s", x); // BBBCCCCC:000AAAAA + emitcode ("xrl", "a,%s", x); // BBBCCCCC:000AAAAA - emitcode ("xch", "a,%s", x); // 000AAAAA:BBBCCCCC + emitcode ("xch", "a,%s", x); // 000AAAAA:BBBCCCCC break; - case 6: // AABBBBBB:CCDDDDDD + case 6: // AABBBBBB:CCDDDDDD emitcode ("mov", "c,acc.7"); - AccAXLrl1 (x); // ABBBBBBC:CDDDDDDA + AccAXLrl1 (x); // ABBBBBBC:CDDDDDDA emitcode ("mov", "c,acc.7"); - AccAXLrl1 (x); // BBBBBBCC:DDDDDDAA + AccAXLrl1 (x); // BBBBBBCC:DDDDDDAA - emitcode ("xch", "a,%s", x); // DDDDDDAA:BBBBBBCC + emitcode ("xch", "a,%s", x); // DDDDDDAA:BBBBBBCC emitcode ("anl", "a,#0x%02x", - SRMask[shCount]); // 000000AA:BBBBBBCC + SRMask[shCount]); // 000000AA:BBBBBBCC break; - case 7: // ABBBBBBB:CDDDDDDD + case 7: // ABBBBBBB:CDDDDDDD - emitcode ("mov", "c,acc.7"); // c = A + emitcode ("mov", "c,acc.7"); // c = A - AccAXLrl1 (x); // BBBBBBBC:DDDDDDDA + AccAXLrl1 (x); // BBBBBBBC:DDDDDDDA - emitcode ("xch", "a,%s", x); // DDDDDDDA:BBBBBBCC + emitcode ("xch", "a,%s", x); // DDDDDDDA:BBBBBBCC emitcode ("anl", "a,#0x%02x", - SRMask[shCount]); // 0000000A:BBBBBBBC + SRMask[shCount]); // 0000000A:BBBBBBBC break; default: @@ -6053,86 +6938,86 @@ AccAXRshS (char *x, int shCount) break; case 1: emitcode ("mov", "c,acc.7"); - AccAXRrl1 (x); // s->a:x + AccAXRrl1 (x); // s->a:x break; case 2: emitcode ("mov", "c,acc.7"); - AccAXRrl1 (x); // s->a:x + AccAXRrl1 (x); // s->a:x emitcode ("mov", "c,acc.7"); - AccAXRrl1 (x); // s->a:x + AccAXRrl1 (x); // s->a:x break; case 3: case 4: - case 5: // AAAAABBB:CCCCCDDD = a:x + case 5: // AAAAABBB:CCCCCDDD = a:x tlbl = newiTempLabel (NULL); - AccRol (8 - shCount); // BBBAAAAA:CCCCCDDD + AccRol (8 - shCount); // BBBAAAAA:CCCCCDDD - emitcode ("xch", "a,%s", x); // CCCCCDDD:BBBAAAAA + emitcode ("xch", "a,%s", x); // CCCCCDDD:BBBAAAAA - AccRol (8 - shCount); // DDDCCCCC:BBBAAAAA + AccRol (8 - shCount); // DDDCCCCC:BBBAAAAA emitcode ("anl", "a,#0x%02x", - SRMask[shCount]); // 000CCCCC:BBBAAAAA + SRMask[shCount]); // 000CCCCC:BBBAAAAA - emitcode ("xrl", "a,%s", x); // BBB(CCCCC^AAAAA):BBBAAAAA + emitcode ("xrl", "a,%s", x); // BBB(CCCCC^AAAAA):BBBAAAAA - emitcode ("xch", "a,%s", x); // BBBAAAAA:BBB(CCCCC^AAAAA) + emitcode ("xch", "a,%s", x); // BBBAAAAA:BBB(CCCCC^AAAAA) emitcode ("anl", "a,#0x%02x", - SRMask[shCount]); // 000AAAAA:BBB(CCCCC^AAAAA) + SRMask[shCount]); // 000AAAAA:BBB(CCCCC^AAAAA) - emitcode ("xch", "a,%s", x); // BBB(CCCCC^AAAAA):000AAAAA + emitcode ("xch", "a,%s", x); // BBB(CCCCC^AAAAA):000AAAAA - emitcode ("xrl", "a,%s", x); // BBBCCCCC:000AAAAA + emitcode ("xrl", "a,%s", x); // BBBCCCCC:000AAAAA - emitcode ("xch", "a,%s", x); // 000SAAAA:BBBCCCCC + emitcode ("xch", "a,%s", x); // 000SAAAA:BBBCCCCC emitcode ("jnb", "acc.%d,%05d$", 7 - shCount, tlbl->key + 100); emitcode ("orl", "a,#0x%02x", - (unsigned char) ~SRMask[shCount]); // 111AAAAA:BBBCCCCC + (unsigned char) ~SRMask[shCount]); // 111AAAAA:BBBCCCCC emitcode ("", "%05d$:", tlbl->key + 100); - break; // SSSSAAAA:BBBCCCCC + break; // SSSSAAAA:BBBCCCCC - case 6: // AABBBBBB:CCDDDDDD + case 6: // AABBBBBB:CCDDDDDD tlbl = newiTempLabel (NULL); emitcode ("mov", "c,acc.7"); - AccAXLrl1 (x); // ABBBBBBC:CDDDDDDA + AccAXLrl1 (x); // ABBBBBBC:CDDDDDDA emitcode ("mov", "c,acc.7"); - AccAXLrl1 (x); // BBBBBBCC:DDDDDDAA + AccAXLrl1 (x); // BBBBBBCC:DDDDDDAA - emitcode ("xch", "a,%s", x); // DDDDDDAA:BBBBBBCC + emitcode ("xch", "a,%s", x); // DDDDDDAA:BBBBBBCC emitcode ("anl", "a,#0x%02x", - SRMask[shCount]); // 000000AA:BBBBBBCC + SRMask[shCount]); // 000000AA:BBBBBBCC emitcode ("jnb", "acc.%d,%05d$", 7 - shCount, tlbl->key + 100); emitcode ("orl", "a,#0x%02x", - (unsigned char) ~SRMask[shCount]); // 111111AA:BBBBBBCC + (unsigned char) ~SRMask[shCount]); // 111111AA:BBBBBBCC emitcode ("", "%05d$:", tlbl->key + 100); break; - case 7: // ABBBBBBB:CDDDDDDD + case 7: // ABBBBBBB:CDDDDDDD tlbl = newiTempLabel (NULL); - emitcode ("mov", "c,acc.7"); // c = A + emitcode ("mov", "c,acc.7"); // c = A - AccAXLrl1 (x); // BBBBBBBC:DDDDDDDA + AccAXLrl1 (x); // BBBBBBBC:DDDDDDDA - emitcode ("xch", "a,%s", x); // DDDDDDDA:BBBBBBCC + emitcode ("xch", "a,%s", x); // DDDDDDDA:BBBBBBCC emitcode ("anl", "a,#0x%02x", - SRMask[shCount]); // 0000000A:BBBBBBBC + SRMask[shCount]); // 0000000A:BBBBBBBC emitcode ("jnb", "acc.%d,%05d$", 7 - shCount, tlbl->key + 100); emitcode ("orl", "a,#0x%02x", - (unsigned char) ~SRMask[shCount]); // 1111111A:BBBBBBBC + (unsigned char) ~SRMask[shCount]); // 1111111A:BBBBBBBC emitcode ("", "%05d$:", tlbl->key + 100); break; @@ -6146,7 +7031,7 @@ AccAXRshS (char *x, int shCount) /*-----------------------------------------------------------------*/ static void shiftL2Left2Result (operand * left, int offl, - operand * result, int offr, int shCount) + operand * result, int offr, int shCount) { if (sameRegs (AOP (result), AOP (left)) && ((offl + MSB16) == offr)) @@ -6162,7 +7047,7 @@ shiftL2Left2Result (operand * left, int offl, } /* ax << shCount (x = lsb(result)) */ AccAXLsh (aopGet (AOP (result), offr, FALSE, FALSE), shCount); - aopPut (AOP (result), "a", offr + MSB16); + aopPut (AOP (result), "a", offr + MSB16, isOperandVolatile (result, FALSE)); } @@ -6171,8 +7056,8 @@ shiftL2Left2Result (operand * left, int offl, /*-----------------------------------------------------------------*/ static void shiftR2Left2Result (operand * left, int offl, - operand * result, int offr, - int shCount, int sign) + operand * result, int offr, + int shCount, int sign) { if (sameRegs (AOP (result), AOP (left)) && ((offl + MSB16) == offr)) @@ -6192,7 +7077,7 @@ shiftR2Left2Result (operand * left, int offl, else AccAXRsh (aopGet (AOP (result), offr, FALSE, FALSE), shCount); if (getDataSize (result) > 1) - aopPut (AOP (result), "a", offr + MSB16); + aopPut (AOP (result), "a", offr + MSB16, isOperandVolatile (result, FALSE)); } /*-----------------------------------------------------------------*/ @@ -6200,7 +7085,7 @@ shiftR2Left2Result (operand * left, int offl, /*-----------------------------------------------------------------*/ static void shiftLLeftOrResult (operand * left, int offl, - operand * result, int offr, int shCount) + operand * result, int offr, int shCount) { MOVA (aopGet (AOP (left), offl, FALSE, FALSE)); /* shift left accumulator */ @@ -6208,7 +7093,7 @@ shiftLLeftOrResult (operand * left, int offl, /* or with result */ emitcode ("orl", "a,%s", aopGet (AOP (result), offr, FALSE, FALSE)); /* back to result */ - aopPut (AOP (result), "a", offr); + aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE)); } /*-----------------------------------------------------------------*/ @@ -6216,7 +7101,7 @@ shiftLLeftOrResult (operand * left, int offl, /*-----------------------------------------------------------------*/ static void shiftRLeftOrResult (operand * left, int offl, - operand * result, int offr, int shCount) + operand * result, int offr, int shCount) { MOVA (aopGet (AOP (left), offl, FALSE, FALSE)); /* shift right accumulator */ @@ -6224,7 +7109,7 @@ shiftRLeftOrResult (operand * left, int offl, /* or with result */ emitcode ("orl", "a,%s", aopGet (AOP (result), offr, FALSE, FALSE)); /* back to result */ - aopPut (AOP (result), "a", offr); + aopPut (AOP (result), "a", offr, isOperandVolatile (result, FALSE)); } /*-----------------------------------------------------------------*/ @@ -6256,22 +7141,22 @@ genlshTwo (operand * result, operand * left, int shCount) shCount -= 8; if (size > 1) - { - if (shCount) - shiftL1Left2Result (left, LSB, result, MSB16, shCount); - else - movLeft2Result (left, LSB, result, MSB16, 0); - } - aopPut (AOP (result), zero, LSB); + { + if (shCount) + shiftL1Left2Result (left, LSB, result, MSB16, shCount); + else + movLeft2Result (left, LSB, result, MSB16, 0); + } + aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE)); } /* 1 <= shCount <= 7 */ else { if (size == 1) - shiftL1Left2Result (left, LSB, result, LSB, shCount); + shiftL1Left2Result (left, LSB, result, LSB, shCount); else - shiftL2Left2Result (left, LSB, result, LSB, shCount); + shiftL2Left2Result (left, LSB, result, LSB, shCount); } } @@ -6291,57 +7176,57 @@ shiftLLong (operand * left, operand * result, int offr) MOVA (l); emitcode ("add", "a,acc"); if (sameRegs (AOP (left), AOP (result)) && - size >= MSB16 + offr && offr != LSB) - emitcode ("xch", "a,%s", - aopGet (AOP (left), LSB + offr, FALSE, FALSE)); + size >= MSB16 + offr && offr != LSB) + emitcode ("xch", "a,%s", + aopGet (AOP (left), LSB + offr, FALSE, FALSE)); else - aopPut (AOP (result), "a", LSB + offr); + aopPut (AOP (result), "a", LSB + offr, isOperandVolatile (result, FALSE)); } if (size >= MSB16 + offr) { if (!(sameRegs (AOP (result), AOP (left)) && size >= MSB16 + offr && offr != LSB)) - { - l = aopGet (AOP (left), MSB16, FALSE, FALSE); - MOVA (l); - } + { + l = aopGet (AOP (left), MSB16, FALSE, FALSE); + MOVA (l); + } emitcode ("rlc", "a"); if (sameRegs (AOP (left), AOP (result)) && - size >= MSB24 + offr && offr != LSB) - emitcode ("xch", "a,%s", - aopGet (AOP (left), MSB16 + offr, FALSE, FALSE)); + size >= MSB24 + offr && offr != LSB) + emitcode ("xch", "a,%s", + aopGet (AOP (left), MSB16 + offr, FALSE, FALSE)); else - aopPut (AOP (result), "a", MSB16 + offr); + aopPut (AOP (result), "a", MSB16 + offr, isOperandVolatile (result, FALSE)); } if (size >= MSB24 + offr) { if (!(sameRegs (AOP (left), AOP (left)) && size >= MSB24 + offr && offr != LSB)) - { - l = aopGet (AOP (left), MSB24, FALSE, FALSE); - MOVA (l); - } + { + l = aopGet (AOP (left), MSB24, FALSE, FALSE); + MOVA (l); + } emitcode ("rlc", "a"); if (sameRegs (AOP (left), AOP (result)) && - size >= MSB32 + offr && offr != LSB) - emitcode ("xch", "a,%s", - aopGet (AOP (left), MSB24 + offr, FALSE, FALSE)); + size >= MSB32 + offr && offr != LSB) + emitcode ("xch", "a,%s", + aopGet (AOP (left), MSB24 + offr, FALSE, FALSE)); else - aopPut (AOP (result), "a", MSB24 + offr); + aopPut (AOP (result), "a", MSB24 + offr, isOperandVolatile (result, FALSE)); } if (size > MSB32 + offr) { if (!(sameRegs (AOP (result), AOP (left)) && size >= MSB32 + offr && offr != LSB)) - { - l = aopGet (AOP (left), MSB32, FALSE, FALSE); - MOVA (l); - } + { + l = aopGet (AOP (left), MSB32, FALSE, FALSE); + MOVA (l); + } emitcode ("rlc", "a"); - aopPut (AOP (result), "a", MSB32 + offr); + aopPut (AOP (result), "a", MSB32 + offr, isOperandVolatile (result, FALSE)); } if (offr != LSB) - aopPut (AOP (result), zero, LSB); + aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE)); } /*-----------------------------------------------------------------*/ @@ -6361,14 +7246,14 @@ genlshFour (operand * result, operand * left, int shCount) { shCount -= 24; if (shCount) - /* lowest order of left goes to the highest - order of the destination */ - shiftL1Left2Result (left, LSB, result, MSB32, shCount); + /* lowest order of left goes to the highest + order of the destination */ + shiftL1Left2Result (left, LSB, result, MSB32, shCount); else - movLeft2Result (left, LSB, result, MSB32, 0); - aopPut (AOP (result), zero, LSB); - aopPut (AOP (result), zero, MSB16); - aopPut (AOP (result), zero, MSB24); + movLeft2Result (left, LSB, result, MSB32, 0); + aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE)); + aopPut (AOP (result), zero, MSB16, isOperandVolatile (result, FALSE)); + aopPut (AOP (result), zero, MSB24, isOperandVolatile (result, FALSE)); return; } @@ -6379,14 +7264,14 @@ genlshFour (operand * result, operand * left, int shCount) shCount -= 16; /* if some more remaining */ if (shCount) - shiftL2Left2Result (left, LSB, result, MSB24, shCount); + shiftL2Left2Result (left, LSB, result, MSB24, shCount); else - { - movLeft2Result (left, MSB16, result, MSB32, 0); - movLeft2Result (left, LSB, result, MSB24, 0); - } - aopPut (AOP (result), zero, MSB16); - aopPut (AOP (result), zero, LSB); + { + movLeft2Result (left, MSB16, result, MSB32, 0); + movLeft2Result (left, LSB, result, MSB24, 0); + } + aopPut (AOP (result), zero, MSB16, isOperandVolatile (result, FALSE)); + aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE)); return; } @@ -6396,31 +7281,31 @@ genlshFour (operand * result, operand * left, int shCount) /* lower order three bytes goes to higher order three bytes */ shCount -= 8; if (size == 2) - { - if (shCount) - shiftL1Left2Result (left, LSB, result, MSB16, shCount); - else - movLeft2Result (left, LSB, result, MSB16, 0); - } + { + if (shCount) + shiftL1Left2Result (left, LSB, result, MSB16, shCount); + else + movLeft2Result (left, LSB, result, MSB16, 0); + } else - { /* size = 4 */ - if (shCount == 0) - { - movLeft2Result (left, MSB24, result, MSB32, 0); - movLeft2Result (left, MSB16, result, MSB24, 0); - movLeft2Result (left, LSB, result, MSB16, 0); - aopPut (AOP (result), zero, LSB); - } - else if (shCount == 1) - shiftLLong (left, result, MSB16); - else - { - shiftL2Left2Result (left, MSB16, result, MSB24, shCount); - shiftL1Left2Result (left, LSB, result, MSB16, shCount); - shiftRLeftOrResult (left, LSB, result, MSB24, 8 - shCount); - aopPut (AOP (result), zero, LSB); - } - } + { /* size = 4 */ + if (shCount == 0) + { + movLeft2Result (left, MSB24, result, MSB32, 0); + movLeft2Result (left, MSB16, result, MSB24, 0); + movLeft2Result (left, LSB, result, MSB16, 0); + aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE)); + } + else if (shCount == 1) + shiftLLong (left, result, MSB16); + else + { + shiftL2Left2Result (left, MSB16, result, MSB24, shCount); + shiftL1Left2Result (left, LSB, result, MSB16, shCount); + shiftRLeftOrResult (left, LSB, result, MSB24, 8 - shCount); + aopPut (AOP (result), zero, LSB, isOperandVolatile (result, FALSE)); + } + } } /* 1 <= shCount <= 7 */ @@ -6428,7 +7313,7 @@ genlshFour (operand * result, operand * left, int shCount) { shiftLLong (left, result, LSB); if (shCount == 2) - shiftLLong (result, result, LSB); + shiftLLong (result, result, LSB); } /* 3 <= shCount <= 7, optimize */ else @@ -6444,9 +7329,9 @@ genlshFour (operand * result, operand * left, int shCount) /*-----------------------------------------------------------------*/ static void genLeftShiftLiteral (operand * left, - operand * right, - operand * result, - iCode * ic) + operand * right, + operand * result, + iCode * ic) { int shCount = (int) floatFromVal (AOP (right)->aopu.aop_lit); int size; @@ -6462,41 +7347,41 @@ genLeftShiftLiteral (operand * left, #if VIEW_SIZE emitcode ("; shift left ", "result %d, left %d", size, - AOP_SIZE (left)); + AOP_SIZE (left)); #endif /* I suppose that the left size >= result size */ if (shCount == 0) { while (size--) - { - movLeft2Result (left, size, result, size, 0); - } + { + movLeft2Result (left, size, result, size, 0); + } } else if (shCount >= (size * 8)) while (size--) - aopPut (AOP (result), zero, size); + aopPut (AOP (result), zero, size, isOperandVolatile (result, FALSE)); else { switch (size) - { - case 1: - genlshOne (result, left, shCount); - break; - - case 2: - genlshTwo (result, left, shCount); - break; - - case 4: - genlshFour (result, left, shCount); - break; - default: - werror (E_INTERNAL_ERROR, __FILE__, __LINE__, - "*** ack! mystery literal shift!\n"); - break; - } + { + case 1: + genlshOne (result, left, shCount); + break; + + case 2: + genlshTwo (result, left, shCount); + break; + + case 4: + genlshFour (result, left, shCount); + break; + default: + werror (E_INTERNAL_ERROR, __FILE__, __LINE__, + "*** ack! mystery literal shift!\n"); + break; + } } freeAsmop (left, NULL, ic, TRUE); freeAsmop (result, NULL, ic, TRUE); @@ -6513,7 +7398,7 @@ genLeftShift (iCode * ic) char *l; symbol *tlbl, *tlbl1; - D(emitcode ("; genLeftShift","")); + D(emitcode ("; genLeftShift","")); right = IC_RIGHT (ic); left = IC_LEFT (ic); @@ -6550,18 +7435,18 @@ genLeftShift (iCode * ic) size = AOP_SIZE (result); offset = 0; while (size--) - { - l = aopGet (AOP (left), offset, FALSE, TRUE); - if (*l == '@' && (IS_AOP_PREG (result))) - { - - emitcode ("mov", "a,%s", l); - aopPut (AOP (result), "a", offset); - } - else - aopPut (AOP (result), l, offset); - offset++; - } + { + l = aopGet (AOP (left), offset, FALSE, TRUE); + if (*l == '@' && (IS_AOP_PREG (result))) + { + + emitcode ("mov", "a,%s", l); + aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE)); + } + else + aopPut (AOP (result), l, offset, isOperandVolatile (result, FALSE)); + offset++; + } } tlbl = newiTempLabel (NULL); @@ -6581,7 +7466,7 @@ genLeftShift (iCode * ic) emitcode ("add", "a,acc"); emitcode ("", "%05d$:", tlbl1->key + 100); emitcode ("djnz", "b,%05d$", tlbl->key + 100); - aopPut (AOP (result), "a", 0); + aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE)); goto release; } @@ -6592,13 +7477,13 @@ genLeftShift (iCode * ic) l = aopGet (AOP (result), offset, FALSE, FALSE); MOVA (l); emitcode ("add", "a,acc"); - aopPut (AOP (result), "a", offset++); + aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE)); while (--size) { l = aopGet (AOP (result), offset, FALSE, FALSE); MOVA (l); emitcode ("rlc", "a"); - aopPut (AOP (result), "a", offset++); + aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE)); } reAdjustPreg (AOP (result)); @@ -6614,7 +7499,7 @@ release: /*-----------------------------------------------------------------*/ static void genrshOne (operand * result, operand * left, - int shCount, int sign) + int shCount, int sign) { D(emitcode ("; genrshOne","")); @@ -6626,7 +7511,7 @@ genrshOne (operand * result, operand * left, /*-----------------------------------------------------------------*/ static void genrshTwo (operand * result, operand * left, - int shCount, int sign) + int shCount, int sign) { D(emitcode ("; genrshTwo","")); @@ -6635,10 +7520,10 @@ genrshTwo (operand * result, operand * left, { shCount -= 8; if (shCount) - shiftR1Left2Result (left, MSB16, result, LSB, - shCount, sign); + shiftR1Left2Result (left, MSB16, result, LSB, + shCount, sign); else - movLeft2Result (left, MSB16, result, LSB, sign); + movLeft2Result (left, MSB16, result, LSB, sign); addSign (result, MSB16, sign); } @@ -6653,7 +7538,7 @@ genrshTwo (operand * result, operand * left, /*-----------------------------------------------------------------*/ static void shiftRLong (operand * left, int offl, - operand * result, int sign) + operand * result, int sign) { int isSameRegs=sameRegs(AOP(left),AOP(result)); @@ -6663,7 +7548,7 @@ shiftRLong (operand * left, int offl, } MOVA (aopGet (AOP (left), MSB32, FALSE, FALSE)); - + if (offl==MSB16) { // shift is > 8 if (sign) { @@ -6672,11 +7557,11 @@ shiftRLong (operand * left, int offl, if (isSameRegs) emitcode ("xch", "a,%s", aopGet(AOP(left), MSB32, FALSE, FALSE)); else { - aopPut (AOP (result), "a", MSB32); + aopPut (AOP (result), "a", MSB32, isOperandVolatile (result, FALSE)); MOVA (aopGet (AOP (left), MSB32, FALSE, FALSE)); } } else { - aopPut (AOP(result), zero, MSB32); + aopPut (AOP(result), zero, MSB32, isOperandVolatile (result, FALSE)); } } @@ -6691,7 +7576,7 @@ shiftRLong (operand * left, int offl, if (isSameRegs && offl==MSB16) { emitcode ("xch", "a,%s",aopGet (AOP (left), MSB24, FALSE, FALSE)); } else { - aopPut (AOP (result), "a", MSB32-offl); + aopPut (AOP (result), "a", MSB32-offl, isOperandVolatile (result, FALSE)); MOVA (aopGet (AOP (left), MSB24, FALSE, FALSE)); } @@ -6699,17 +7584,17 @@ shiftRLong (operand * left, int offl, if (isSameRegs && offl==1) { emitcode ("xch", "a,%s",aopGet (AOP (left), MSB16, FALSE, FALSE)); } else { - aopPut (AOP (result), "a", MSB24-offl); + aopPut (AOP (result), "a", MSB24-offl, isOperandVolatile (result, FALSE)); MOVA (aopGet (AOP (left), MSB16, FALSE, FALSE)); } emitcode ("rrc", "a"); - aopPut (AOP (result), "a", MSB16 - offl); + aopPut (AOP (result), "a", MSB16 - offl, isOperandVolatile (result, FALSE)); if (offl == LSB) { MOVA (aopGet (AOP (left), LSB, FALSE, FALSE)); emitcode ("rrc", "a"); - aopPut (AOP (result), "a", LSB); + aopPut (AOP (result), "a", LSB, isOperandVolatile (result, FALSE)); } } @@ -6718,7 +7603,7 @@ shiftRLong (operand * left, int offl, /*-----------------------------------------------------------------*/ static void genrshFour (operand * result, operand * left, - int shCount, int sign) + int shCount, int sign) { D(emitcode ("; genrshFour","")); @@ -6727,58 +7612,58 @@ genrshFour (operand * result, operand * left, { shCount -= 24; if (shCount) - shiftR1Left2Result (left, MSB32, result, LSB, shCount, sign); + shiftR1Left2Result (left, MSB32, result, LSB, shCount, sign); else - movLeft2Result (left, MSB32, result, LSB, sign); + movLeft2Result (left, MSB32, result, LSB, sign); addSign (result, MSB16, sign); } else if (shCount >= 16) { shCount -= 16; if (shCount) - shiftR2Left2Result (left, MSB24, result, LSB, shCount, sign); + shiftR2Left2Result (left, MSB24, result, LSB, shCount, sign); else - { - movLeft2Result (left, MSB24, result, LSB, 0); - movLeft2Result (left, MSB32, result, MSB16, sign); - } + { + movLeft2Result (left, MSB24, result, LSB, 0); + movLeft2Result (left, MSB32, result, MSB16, sign); + } addSign (result, MSB24, sign); } else if (shCount >= 8) { shCount -= 8; if (shCount == 1) - shiftRLong (left, MSB16, result, sign); + shiftRLong (left, MSB16, result, sign); else if (shCount == 0) - { - movLeft2Result (left, MSB16, result, LSB, 0); - movLeft2Result (left, MSB24, result, MSB16, 0); - movLeft2Result (left, MSB32, result, MSB24, sign); - addSign (result, MSB32, sign); - } + { + movLeft2Result (left, MSB16, result, LSB, 0); + movLeft2Result (left, MSB24, result, MSB16, 0); + movLeft2Result (left, MSB32, result, MSB24, sign); + addSign (result, MSB32, sign); + } else - { - shiftR2Left2Result (left, MSB16, result, LSB, shCount, 0); - shiftLLeftOrResult (left, MSB32, result, MSB16, 8 - shCount); - /* the last shift is signed */ - shiftR1Left2Result (left, MSB32, result, MSB24, shCount, sign); - addSign (result, MSB32, sign); - } + { + shiftR2Left2Result (left, MSB16, result, LSB, shCount, 0); + shiftLLeftOrResult (left, MSB32, result, MSB16, 8 - shCount); + /* the last shift is signed */ + shiftR1Left2Result (left, MSB32, result, MSB24, shCount, sign); + addSign (result, MSB32, sign); + } } else - { /* 1 <= shCount <= 7 */ + { /* 1 <= shCount <= 7 */ if (shCount <= 2) - { - shiftRLong (left, LSB, result, sign); - if (shCount == 2) - shiftRLong (result, LSB, result, sign); - } + { + shiftRLong (left, LSB, result, sign); + if (shCount == 2) + shiftRLong (result, LSB, result, sign); + } else - { - shiftR2Left2Result (left, LSB, result, LSB, shCount, 0); - shiftLLeftOrResult (left, MSB24, result, MSB16, 8 - shCount); - shiftR2Left2Result (left, MSB24, result, MSB24, shCount, sign); - } + { + shiftR2Left2Result (left, LSB, result, LSB, shCount, 0); + shiftLLeftOrResult (left, MSB24, result, MSB16, 8 - shCount); + shiftR2Left2Result (left, MSB24, result, MSB24, shCount, sign); + } } } @@ -6787,10 +7672,10 @@ genrshFour (operand * result, operand * left, /*-----------------------------------------------------------------*/ static void genRightShiftLiteral (operand * left, - operand * right, - operand * result, - iCode * ic, - int sign) + operand * right, + operand * result, + iCode * ic, + int sign) { int shCount = (int) floatFromVal (AOP (right)->aopu.aop_lit); int size; @@ -6804,7 +7689,7 @@ genRightShiftLiteral (operand * left, #if VIEW_SIZE emitcode ("; shift right ", "result %d, left %d", AOP_SIZE (result), - AOP_SIZE (left)); + AOP_SIZE (left)); #endif size = getDataSize (left); @@ -6815,38 +7700,38 @@ genRightShiftLiteral (operand * left, { size = getDataSize (result); while (size--) - movLeft2Result (left, size, result, size, 0); + movLeft2Result (left, size, result, size, 0); } else if (shCount >= (size * 8)) { - if (sign) - /* get sign in acc.7 */ - MOVA (aopGet (AOP (left), size - 1, FALSE, FALSE)); + if (sign) { + /* get sign in acc.7 */ + MOVA (aopGet (AOP (left), size - 1, FALSE, FALSE)); + } addSign (result, LSB, sign); } else { switch (size) - { - case 1: - genrshOne (result, left, shCount, sign); - break; - - case 2: - genrshTwo (result, left, shCount, sign); - break; - - case 4: - genrshFour (result, left, shCount, sign); - break; - default: - break; - } + { + case 1: + genrshOne (result, left, shCount, sign); + break; + + case 2: + genrshTwo (result, left, shCount, sign); + break; - freeAsmop (left, NULL, ic, TRUE); - freeAsmop (result, NULL, ic, TRUE); + case 4: + genrshFour (result, left, shCount, sign); + break; + default: + break; + } } + freeAsmop (left, NULL, ic, TRUE); + freeAsmop (result, NULL, ic, TRUE); } /*-----------------------------------------------------------------*/ @@ -6898,18 +7783,18 @@ genSignedRightShift (iCode * ic) size = AOP_SIZE (result); offset = 0; while (size--) - { - l = aopGet (AOP (left), offset, FALSE, TRUE); - if (*l == '@' && IS_AOP_PREG (result)) - { - - emitcode ("mov", "a,%s", l); - aopPut (AOP (result), "a", offset); - } - else - aopPut (AOP (result), l, offset); - offset++; - } + { + l = aopGet (AOP (left), offset, FALSE, TRUE); + if (*l == '@' && IS_AOP_PREG (result)) + { + + emitcode ("mov", "a,%s", l); + aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE)); + } + else + aopPut (AOP (result), l, offset, isOperandVolatile (result, FALSE)); + offset++; + } } /* mov the highest order bit to OVR */ @@ -6918,7 +7803,7 @@ genSignedRightShift (iCode * ic) size = AOP_SIZE (result); offset = size - 1; - emitcode ("mov", "a,%s", aopGet (AOP (left), offset, FALSE, FALSE)); + MOVA (aopGet (AOP (left), offset, FALSE, FALSE)); emitcode ("rlc", "a"); emitcode ("mov", "ov,c"); /* if it is only one byte then */ @@ -6932,7 +7817,7 @@ genSignedRightShift (iCode * ic) emitcode ("rrc", "a"); emitcode ("", "%05d$:", tlbl1->key + 100); emitcode ("djnz", "b,%05d$", tlbl->key + 100); - aopPut (AOP (result), "a", 0); + aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE)); goto release; } @@ -6945,7 +7830,7 @@ genSignedRightShift (iCode * ic) l = aopGet (AOP (result), offset, FALSE, FALSE); MOVA (l); emitcode ("rrc", "a"); - aopPut (AOP (result), "a", offset--); + aopPut (AOP (result), "a", offset--, isOperandVolatile (result, FALSE)); } reAdjustPreg (AOP (result)); emitcode ("", "%05d$:", tlbl1->key + 100); @@ -6963,7 +7848,7 @@ static void genRightShift (iCode * ic) { operand *right, *left, *result; - sym_link *retype; + sym_link *letype; int size, offset; char *l; symbol *tlbl, *tlbl1; @@ -6972,9 +7857,9 @@ genRightShift (iCode * ic) /* if signed then we do it the hard way preserve the sign bit moving it inwards */ - retype = getSpec (operandType (IC_RESULT (ic))); + letype = getSpec (operandType (IC_LEFT (ic))); - if (!SPEC_USIGN (retype)) + if (!SPEC_USIGN (letype)) { genSignedRightShift (ic); return; @@ -7022,18 +7907,18 @@ genRightShift (iCode * ic) size = AOP_SIZE (result); offset = 0; while (size--) - { - l = aopGet (AOP (left), offset, FALSE, TRUE); - if (*l == '@' && IS_AOP_PREG (result)) - { - - emitcode ("mov", "a,%s", l); - aopPut (AOP (result), "a", offset); - } - else - aopPut (AOP (result), l, offset); - offset++; - } + { + l = aopGet (AOP (left), offset, FALSE, TRUE); + if (*l == '@' && IS_AOP_PREG (result)) + { + + emitcode ("mov", "a,%s", l); + aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE)); + } + else + aopPut (AOP (result), l, offset, isOperandVolatile (result, FALSE)); + offset++; + } } tlbl = newiTempLabel (NULL); @@ -7052,7 +7937,7 @@ genRightShift (iCode * ic) emitcode ("rrc", "a"); emitcode ("", "%05d$:", tlbl1->key + 100); emitcode ("djnz", "b,%05d$", tlbl->key + 100); - aopPut (AOP (result), "a", 0); + aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE)); goto release; } @@ -7065,7 +7950,7 @@ genRightShift (iCode * ic) l = aopGet (AOP (result), offset, FALSE, FALSE); MOVA (l); emitcode ("rrc", "a"); - aopPut (AOP (result), "a", offset--); + aopPut (AOP (result), "a", offset--, isOperandVolatile (result, FALSE)); } reAdjustPreg (AOP (result)); @@ -7078,116 +7963,158 @@ release: } /*-----------------------------------------------------------------*/ -/* genUnpackBits - generates code for unpacking bits */ +/* emitPtrByteGet - emits code to get a byte into A through a */ +/* pointer register (R0, R1, or DPTR). The */ +/* original value of A can be preserved in B. */ /*-----------------------------------------------------------------*/ static void -genUnpackBits (operand * result, char *rname, int ptype) +emitPtrByteGet (char *rname, int p_type, bool preserveAinB) { - int shCnt; - int rlen = 0; - sym_link *etype; - int offset = 0; - int rsize; - - D(emitcode ("; genUnpackBits","")); - - etype = getSpec (operandType (result)); - rsize = getSize (operandType (result)); - /* read the first byte */ - switch (ptype) + switch (p_type) { - - case POINTER: case IPOINTER: + case POINTER: + if (preserveAinB) + emitcode ("mov", "b,a"); emitcode ("mov", "a,@%s", rname); break; case PPOINTER: + if (preserveAinB) + emitcode ("mov", "b,a"); emitcode ("movx", "a,@%s", rname); break; case FPOINTER: + if (preserveAinB) + emitcode ("mov", "b,a"); emitcode ("movx", "a,@dptr"); break; case CPOINTER: + if (preserveAinB) + emitcode ("mov", "b,a"); emitcode ("clr", "a"); emitcode ("movc", "a,@a+dptr"); break; case GPOINTER: + if (preserveAinB) + { + emitcode ("push", "b"); + emitcode ("push", "acc"); + } emitcode ("lcall", "__gptrget"); + if (preserveAinB) + emitcode ("pop", "b"); break; } +} - rlen = SPEC_BLEN (etype); - - /* if we have bitdisplacement then it fits */ - /* into this byte completely or if length is */ - /* less than a byte */ - if ((shCnt = SPEC_BSTR (etype)) || - (SPEC_BLEN (etype) <= 8)) +/*-----------------------------------------------------------------*/ +/* emitPtrByteSet - emits code to set a byte from src through a */ +/* pointer register (R0, R1, or DPTR). */ +/*-----------------------------------------------------------------*/ +static void +emitPtrByteSet (char *rname, int p_type, char *src) +{ + switch (p_type) { + case IPOINTER: + case POINTER: + if (*src=='@') + { + MOVA (src); + emitcode ("mov", "@%s,a", rname); + } + else + emitcode ("mov", "@%s,%s", rname, src); + break; - /* shift right acc */ - AccRsh (shCnt); - - emitcode ("anl", "a,#0x%02x", - ((unsigned char) -1) >> (8 - SPEC_BLEN (etype))); - aopPut (AOP (result), "a", offset++); - goto finish; - } - - /* bit field did not fit in a byte */ - aopPut (AOP (result), "a", offset++); + case PPOINTER: + MOVA (src); + emitcode ("movx", "@%s,a", rname); + break; - while (1) - { + case FPOINTER: + MOVA (src); + emitcode ("movx", "@dptr,a"); + break; - switch (ptype) - { - case POINTER: - case IPOINTER: - emitcode ("inc", "%s", rname); - emitcode ("mov", "a,@%s", rname); - break; + case GPOINTER: + MOVA (src); + emitcode ("lcall", "__gptrput"); + break; + } +} - case PPOINTER: - emitcode ("inc", "%s", rname); - emitcode ("movx", "a,@%s", rname); - break; +/*-----------------------------------------------------------------*/ +/* genUnpackBits - generates code for unpacking bits */ +/*-----------------------------------------------------------------*/ +static void +genUnpackBits (operand * result, char *rname, int ptype, iCode *ifx) +{ + int offset = 0; /* result byte offset */ + int rsize; /* result size */ + int rlen = 0; /* remaining bitfield length */ + sym_link *etype; /* bitfield type information */ + int blen; /* bitfield length */ + int bstr; /* bitfield starting bit within byte */ + char buffer[10]; - case FPOINTER: - emitcode ("inc", "dptr"); - emitcode ("movx", "a,@dptr"); - break; + D(emitcode ("; genUnpackBits","")); - case CPOINTER: - emitcode ("clr", "a"); - emitcode ("inc", "dptr"); - emitcode ("movc", "a,@a+dptr"); - break; + etype = getSpec (operandType (result)); + rsize = getSize (operandType (result)); + blen = SPEC_BLEN (etype); + bstr = SPEC_BSTR (etype); - case GPOINTER: - emitcode ("inc", "dptr"); - emitcode ("lcall", "__gptrget"); - break; + if (ifx && blen <= 8) + { + emitPtrByteGet (rname, ptype, FALSE); + if (blen == 1) + { + SNPRINTF (buffer, sizeof(buffer), + "acc.%d", bstr); + genIfxJump (ifx, buffer, NULL, NULL, NULL); } + else + { + if (blen < 8) + emitcode ("anl", "a,#0x%02x", + (((unsigned char) -1) >> (8 - blen)) << bstr); + genIfxJump (ifx, "a", NULL, NULL, NULL); + } + return; + } + wassert (!ifx); + + /* If the bitfield length is less than a byte */ + if (blen < 8) + { + emitPtrByteGet (rname, ptype, FALSE); + AccRsh (bstr); + emitcode ("anl", "a,#0x%02x", ((unsigned char) -1) >> (8 - blen)); + aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE)); + goto finish; + } - rlen -= 8; - /* if we are done */ - if (rlen < 8) - break; - - aopPut (AOP (result), "a", offset++); - + /* Bit field did not fit in a byte. Copy all + but the partial byte at the end. */ + for (rlen=blen;rlen>=8;rlen-=8) + { + emitPtrByteGet (rname, ptype, FALSE); + aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE)); + if (rlen>8) + emitcode ("inc", "%s", rname); } + /* Handle the partial byte at the end */ if (rlen) { - // emitcode("anl","a,#0x%02x",((unsigned char)-1)>>(rlen)); - AccLsh (8 - rlen); - aopPut (AOP (result), "a", offset++); + emitPtrByteGet (rname, ptype, FALSE); + emitcode ("anl", "a,#0x%02x", ((unsigned char) -1) >> (8-rlen)); + aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE)); } finish: @@ -7195,9 +8122,8 @@ finish: { rsize -= offset; while (rsize--) - aopPut (AOP (result), zero, offset++); + aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE)); } - return; } @@ -7206,8 +8132,8 @@ finish: /*-----------------------------------------------------------------*/ static void genDataPointerGet (operand * left, - operand * result, - iCode * ic) + operand * result, + iCode * ic) { char *l; char buffer[256]; @@ -7223,10 +8149,10 @@ genDataPointerGet (operand * left, while (size--) { if (offset) - sprintf (buffer, "(%s + %d)", l + 1, offset); + sprintf (buffer, "(%s + %d)", l + 1, offset); else - sprintf (buffer, "%s", l + 1); - aopPut (AOP (result), buffer, offset++); + sprintf (buffer, "%s", l + 1); + aopPut (AOP (result), buffer, offset++, isOperandVolatile (result, FALSE)); } freeAsmop (left, NULL, ic, TRUE); @@ -7238,9 +8164,10 @@ genDataPointerGet (operand * left, /*-----------------------------------------------------------------*/ static void genNearPointerGet (operand * left, - operand * result, - iCode * ic, - iCode * pi) + operand * result, + iCode * ic, + iCode * pi, + iCode * ifx) { asmop *aop = NULL; regs *preg = NULL; @@ -7257,38 +8184,57 @@ genNearPointerGet (operand * left, aopOp (left, ic, FALSE); /* if left is rematerialisable and - result is not bit variable type and + result is not bitfield variable type and the left is pointer to data space i.e lower 128 bytes of space */ if (AOP_TYPE (left) == AOP_IMMD && - !IS_BITVAR (retype) && + !IS_BITFIELD (retype) && DCL_TYPE (ltype) == POINTER) { genDataPointerGet (left, result, ic); return; } - /* if the value is already in a pointer register + /* if the value is already in a pointer register then don't need anything more */ if (!AOP_INPREG (AOP (left))) { - /* otherwise get a free pointer register */ - aop = newAsmop (0); - preg = getFreePtr (ic, &aop, FALSE); - emitcode ("mov", "%s,%s", - preg->name, - aopGet (AOP (left), 0, FALSE, TRUE)); - rname = preg->name; + if (IS_AOP_PREG (left)) + { + // Aha, it is a pointer, just in disguise. + rname = aopGet (AOP (left), 0, FALSE, FALSE); + if (*rname != '@') + { + fprintf(stderr, "probable internal error: unexpected rname @ %s:%d\n", + __FILE__, __LINE__); + } + else + { + // Expected case. + emitcode ("mov", "a%s,%s", rname + 1, rname); + rname++; // skip the '@'. + } + } + else + { + /* otherwise get a free pointer register */ + aop = newAsmop (0); + preg = getFreePtr (ic, &aop, FALSE); + emitcode ("mov", "%s,%s", + preg->name, + aopGet (AOP (left), 0, FALSE, TRUE)); + rname = preg->name; + } } else rname = aopGet (AOP (left), 0, FALSE, FALSE); - + //aopOp (result, ic, FALSE); aopOp (result, ic, result?TRUE:FALSE); /* if bitfield then unpack the bits */ - if (IS_BITVAR (retype)) - genUnpackBits (result, rname, POINTER); + if (IS_BITFIELD (retype)) + genUnpackBits (result, rname, POINTER, ifx); else { /* we have can just get the values */ @@ -7296,31 +8242,32 @@ genNearPointerGet (operand * left, 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 || pi) - emitcode ("inc", "%s", rname); - } + { + if (ifx || IS_AOP_PREG (result) || AOP_TYPE (result) == AOP_STK) + { + + emitcode ("mov", "a,@%s", rname); + if (!ifx) + aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE)); + } + else + { + sprintf (buffer, "@%s", rname); + aopPut (AOP (result), buffer, offset, isOperandVolatile (result, FALSE)); + } + offset++; + if (size || pi) + emitcode ("inc", "%s", rname); + } } /* now some housekeeping stuff */ if (aop) /* we had to allocate for this iCode */ { if (pi) { /* post increment present */ - aopPut(AOP ( left ),rname,0); + aopPut(AOP ( left ),rname,0, isOperandVolatile (left, FALSE)); } - freeAsmop (NULL, aop, ic, TRUE); + freeAsmop (NULL, aop, ic, RESULTONSTACK (ic) ? FALSE : TRUE); } else { @@ -7330,20 +8277,25 @@ genNearPointerGet (operand * left, we have to point it back to where it belongs */ if ((AOP_SIZE (result) > 1 && - !OP_SYMBOL (left)->remat && - (OP_SYMBOL (left)->liveTo > ic->seq || - ic->depth)) && - !pi) - { - int size = AOP_SIZE (result) - 1; - while (size--) - emitcode ("dec", "%s", rname); - } + !OP_SYMBOL (left)->remat && + (OP_SYMBOL (left)->liveTo > ic->seq || + ic->depth)) && + !pi) + { + int size = AOP_SIZE (result) - 1; + while (size--) + emitcode ("dec", "%s", rname); + } + } + + if (ifx && !ifx->generated) + { + genIfxJump (ifx, "a", left, NULL, result); } /* done */ + freeAsmop (result, NULL, ic, RESULTONSTACK (ic) ? FALSE : TRUE); freeAsmop (left, NULL, ic, TRUE); - freeAsmop (result, NULL, ic, TRUE); if (pi) pi->generated = 1; } @@ -7352,9 +8304,10 @@ genNearPointerGet (operand * left, /*-----------------------------------------------------------------*/ static void genPagedPointerGet (operand * left, - operand * result, - iCode * ic, - iCode *pi) + operand * result, + iCode * ic, + iCode *pi, + iCode *ifx) { asmop *aop = NULL; regs *preg = NULL; @@ -7376,8 +8329,8 @@ genPagedPointerGet (operand * left, aop = newAsmop (0); preg = getFreePtr (ic, &aop, FALSE); emitcode ("mov", "%s,%s", - preg->name, - aopGet (AOP (left), 0, FALSE, TRUE)); + preg->name, + aopGet (AOP (left), 0, FALSE, TRUE)); rname = preg->name; } else @@ -7386,8 +8339,8 @@ genPagedPointerGet (operand * left, aopOp (result, ic, FALSE); /* if bitfield then unpack the bits */ - if (IS_BITVAR (retype)) - genUnpackBits (result, rname, PPOINTER); + if (IS_BITFIELD (retype)) + genUnpackBits (result, rname, PPOINTER, ifx); else { /* we have can just get the values */ @@ -7395,22 +8348,23 @@ genPagedPointerGet (operand * left, int offset = 0; while (size--) - { + { - emitcode ("movx", "a,@%s", rname); - aopPut (AOP (result), "a", offset); + emitcode ("movx", "a,@%s", rname); + if (!ifx) + aopPut (AOP (result), "a", offset, isOperandVolatile (result, FALSE)); - offset++; + offset++; - if (size || pi) - emitcode ("inc", "%s", rname); - } + if (size || pi) + emitcode ("inc", "%s", rname); + } } /* now some housekeeping stuff */ if (aop) /* we had to allocate for this iCode */ { - if (pi) aopPut ( AOP (left), rname, 0); + if (pi) aopPut ( AOP (left), rname, 0, isOperandVolatile (left, FALSE)); freeAsmop (NULL, aop, ic, TRUE); } else @@ -7421,15 +8375,20 @@ genPagedPointerGet (operand * left, we have to point it back to where it belongs */ if ((AOP_SIZE (result) > 1 && - !OP_SYMBOL (left)->remat && - (OP_SYMBOL (left)->liveTo > ic->seq || - ic->depth)) && - !pi) - { - int size = AOP_SIZE (result) - 1; - while (size--) - emitcode ("dec", "%s", rname); - } + !OP_SYMBOL (left)->remat && + (OP_SYMBOL (left)->liveTo > ic->seq || + ic->depth)) && + !pi) + { + int size = AOP_SIZE (result) - 1; + while (size--) + emitcode ("dec", "%s", rname); + } + } + + if (ifx && !ifx->generated) + { + genIfxJump (ifx, "a", left, NULL, result); } /* done */ @@ -7439,12 +8398,72 @@ genPagedPointerGet (operand * left, } +/*--------------------------------------------------------------------*/ +/* loadDptrFromOperand - load dptr (and optionally B) from operand op */ +/*--------------------------------------------------------------------*/ +static void +loadDptrFromOperand (operand *op, bool loadBToo) +{ + if (AOP_TYPE (op) != AOP_STR) + { + /* if this is remateriazable */ + if (AOP_TYPE (op) == AOP_IMMD) + { + emitcode ("mov", "dptr,%s", aopGet (AOP (op), 0, TRUE, FALSE)); + if (loadBToo) + { + if (AOP(op)->aopu.aop_immd.from_cast_remat) + emitcode ("mov", "b,%s",aopGet(AOP (op), AOP_SIZE(op)-1, FALSE, FALSE)); + else + { + wassertl(FALSE, "need pointerCode"); + emitcode ("", "; mov b,???"); + /* genPointerGet and genPointerSet originally did different + ** things for this case. Both seem wrong. + ** from genPointerGet: + ** emitcode ("mov", "b,#%d", pointerCode (retype)); + ** from genPointerSet: + ** emitcode ("mov", "b,%s + 1", aopGet (AOP (result), 0, TRUE, FALSE)); + */ + } + } + } + else if (AOP_TYPE (op) == AOP_DPTR) + { + if (loadBToo) + { + MOVA (aopGet (AOP (op), 0, FALSE, FALSE)); + emitcode ("push", "acc"); + MOVA (aopGet (AOP (op), 1, FALSE, FALSE)); + emitcode ("push", "acc"); + emitcode ("mov", "b,%s", aopGet (AOP (op), 2, FALSE, FALSE)); + emitcode ("pop", "dph"); + emitcode ("pop", "dpl"); + } + else + { + MOVA (aopGet (AOP (op), 0, FALSE, FALSE)); + emitcode ("push", "acc"); + emitcode ("mov", "dph,%s", aopGet (AOP (op), 1, FALSE, FALSE)); + emitcode ("pop", "dpl"); + } + } + else + { /* we need to get it byte by byte */ + emitcode ("mov", "dpl,%s", aopGet (AOP (op), 0, FALSE, FALSE)); + emitcode ("mov", "dph,%s", aopGet (AOP (op), 1, FALSE, FALSE)); + if (loadBToo) + emitcode ("mov", "b,%s", aopGet (AOP (op), 2, FALSE, FALSE)); + } + } +} + /*-----------------------------------------------------------------*/ /* genFarPointerGet - gget value from far space */ /*-----------------------------------------------------------------*/ static void genFarPointerGet (operand * left, - operand * result, iCode * ic, iCode * pi) + operand * result, iCode * ic, iCode * pi, iCode * ifx) { int size, offset; sym_link *retype = getSpec (operandType (result)); @@ -7452,45 +8471,42 @@ genFarPointerGet (operand * left, D(emitcode ("; genFarPointerGet","")); aopOp (left, ic, FALSE); + loadDptrFromOperand (left, FALSE); - /* if the operand is already in dptr - then we do nothing else we move the value to dptr */ - if (AOP_TYPE (left) != AOP_STR) - { - /* if this is remateriazable */ - if (AOP_TYPE (left) == AOP_IMMD) - emitcode ("mov", "dptr,%s", aopGet (AOP (left), 0, TRUE, FALSE)); - else - { /* we need to get it byte by byte */ - emitcode ("mov", "dpl,%s", aopGet (AOP (left), 0, FALSE, FALSE)); - emitcode ("mov", "dph,%s", aopGet (AOP (left), 1, FALSE, FALSE)); - } - } - /* so dptr know contains the address */ + /* so dptr now contains the address */ aopOp (result, ic, FALSE); /* if bit then unpack */ - if (IS_BITVAR (retype)) - genUnpackBits (result, "dptr", FPOINTER); + if (IS_BITFIELD (retype)) + genUnpackBits (result, "dptr", FPOINTER, ifx); else { size = AOP_SIZE (result); offset = 0; while (size--) - { - emitcode ("movx", "a,@dptr"); - aopPut (AOP (result), "a", offset++); - if (size || pi) - emitcode ("inc", "dptr"); - } + { + emitcode ("movx", "a,@dptr"); + if (!ifx) + aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE)); + if (size || pi) + emitcode ("inc", "dptr"); + } + } - if (pi && AOP_TYPE (left) != AOP_IMMD && AOP_TYPE (left) != AOP_STR) { - aopPut ( AOP (left), "dpl", 0); - aopPut ( AOP (left), "dph", 1); - pi->generated = 1; - } + if (pi && AOP_TYPE (left) != AOP_IMMD && AOP_TYPE (left) != AOP_STR) + { + aopPut ( AOP (left), "dpl", 0, isOperandVolatile (left, FALSE)); + aopPut ( AOP (left), "dph", 1, isOperandVolatile (left, FALSE)); + pi->generated = 1; + } + + if (ifx && !ifx->generated) + { + genIfxJump (ifx, "a", left, NULL, result); + } + freeAsmop (left, NULL, ic, TRUE); freeAsmop (result, NULL, ic, TRUE); } @@ -7500,7 +8516,7 @@ genFarPointerGet (operand * left, /*-----------------------------------------------------------------*/ static void genCodePointerGet (operand * left, - operand * result, iCode * ic, iCode *pi) + operand * result, iCode * ic, iCode *pi, iCode *ifx) { int size, offset; sym_link *retype = getSpec (operandType (result)); @@ -7508,46 +8524,51 @@ genCodePointerGet (operand * left, D(emitcode ("; genCodePointerGet","")); aopOp (left, ic, FALSE); + loadDptrFromOperand (left, FALSE); - /* if the operand is already in dptr - then we do nothing else we move the value to dptr */ - if (AOP_TYPE (left) != AOP_STR) - { - /* if this is remateriazable */ - if (AOP_TYPE (left) == AOP_IMMD) - emitcode ("mov", "dptr,%s", aopGet (AOP (left), 0, TRUE, FALSE)); - else - { /* we need to get it byte by byte */ - emitcode ("mov", "dpl,%s", aopGet (AOP (left), 0, FALSE, FALSE)); - emitcode ("mov", "dph,%s", aopGet (AOP (left), 1, FALSE, FALSE)); - } - } - /* so dptr know contains the address */ + /* so dptr now contains the address */ aopOp (result, ic, FALSE); /* if bit then unpack */ - if (IS_BITVAR (retype)) - genUnpackBits (result, "dptr", CPOINTER); + if (IS_BITFIELD (retype)) + genUnpackBits (result, "dptr", CPOINTER, ifx); else { size = AOP_SIZE (result); offset = 0; while (size--) - { - emitcode ("clr", "a"); - emitcode ("movc", "a,@a+dptr"); - aopPut (AOP (result), "a", offset++); - if (size || pi) - emitcode ("inc", "dptr"); - } + { + if (pi) + { + emitcode ("clr", "a"); + emitcode ("movc", "a,@a+dptr"); + if (!ifx) + aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE)); + emitcode ("inc", "dptr"); + } + else + { + emitcode ("mov", "a,#0x%02x", offset); + emitcode ("movc", "a,@a+dptr"); + if (!ifx) + aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE)); + } + } + } + + if (pi && AOP_TYPE (left) != AOP_IMMD && AOP_TYPE (left) != AOP_STR) + { + aopPut ( AOP (left), "dpl", 0, isOperandVolatile (left, FALSE)); + aopPut ( AOP (left), "dph", 1, isOperandVolatile (left, FALSE)); + pi->generated = 1; + } + + if (ifx && !ifx->generated) + { + genIfxJump (ifx, "a", left, NULL, result); } - if (pi && AOP_TYPE (left) != AOP_IMMD && AOP_TYPE (left) != AOP_STR) { - aopPut ( AOP (left), "dpl", 0); - aopPut ( AOP (left), "dph", 1); - pi->generated = 1; - } freeAsmop (left, NULL, ic, TRUE); freeAsmop (result, NULL, ic, TRUE); } @@ -7557,7 +8578,7 @@ genCodePointerGet (operand * left, /*-----------------------------------------------------------------*/ static void genGenPointerGet (operand * left, - operand * result, iCode * ic, iCode *pi) + operand * result, iCode * ic, iCode *pi, iCode *ifx) { int size, offset; sym_link *retype = getSpec (operandType (result)); @@ -7565,53 +8586,42 @@ genGenPointerGet (operand * left, D(emitcode ("; genGenPointerGet","")); aopOp (left, ic, FALSE); + loadDptrFromOperand (left, TRUE); - /* if the operand is already in dptr - then we do nothing else we move the value to dptr */ - if (AOP_TYPE (left) != AOP_STR) - { - /* if this is remateriazable */ - if (AOP_TYPE (left) == AOP_IMMD) - { - emitcode ("mov", "dptr,%s", aopGet (AOP (left), 0, TRUE, FALSE)); - if (AOP(left)->aopu.aop_immd.from_cast_remat) - emitcode ("mov", "b,%s",aopGet(AOP (left), AOP_SIZE(left)-1, FALSE, FALSE)); - else - emitcode ("mov", "b,#%d", pointerCode (retype)); - } - else - { /* we need to get it byte by byte */ - emitcode ("mov", "dpl,%s", aopGet (AOP (left), 0, FALSE, FALSE)); - emitcode ("mov", "dph,%s", aopGet (AOP (left), 1, FALSE, FALSE)); - emitcode ("mov", "b,%s", aopGet (AOP (left), 2, FALSE, FALSE)); - } - } /* so dptr know contains the address */ aopOp (result, ic, FALSE); /* if bit then unpack */ - if (IS_BITVAR (retype)) - genUnpackBits (result, "dptr", GPOINTER); + if (IS_BITFIELD (retype)) + genUnpackBits (result, "dptr", GPOINTER, ifx); else { size = AOP_SIZE (result); offset = 0; while (size--) - { - emitcode ("lcall", "__gptrget"); - aopPut (AOP (result), "a", offset++); - if (size || pi) - emitcode ("inc", "dptr"); - } + { + emitcode ("lcall", "__gptrget"); + if (!ifx) + aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE)); + if (size || pi) + emitcode ("inc", "dptr"); + } } - if (pi && AOP_TYPE (left) != AOP_IMMD && AOP_TYPE (left) != AOP_STR) { - aopPut ( AOP (left), "dpl", 0); - aopPut ( AOP (left), "dph", 1); - aopPut ( AOP (left), "b", 2); - pi->generated = 1; - } + if (pi && AOP_TYPE (left) != AOP_IMMD && AOP_TYPE (left) != AOP_STR) + { + aopPut ( AOP (left), "dpl", 0, isOperandVolatile (left, FALSE)); + aopPut ( AOP (left), "dph", 1, isOperandVolatile (left, FALSE)); + pi->generated = 1; + } + + if (ifx && !ifx->generated) + { + genIfxJump (ifx, "a", left, NULL, result); + } + + freeAsmop (left, NULL, ic, TRUE); freeAsmop (result, NULL, ic, TRUE); } @@ -7620,7 +8630,7 @@ genGenPointerGet (operand * left, /* genPointerGet - generate code for pointer get */ /*-----------------------------------------------------------------*/ static void -genPointerGet (iCode * ic, iCode *pi) +genPointerGet (iCode * ic, iCode *pi, iCode *ifx) { operand *left, *result; sym_link *type, *etype; @@ -7630,6 +8640,9 @@ genPointerGet (iCode * ic, iCode *pi) left = IC_LEFT (ic); result = IC_RESULT (ic); + + if (getSize (operandType (result))>1) + ifx = NULL; /* depending on the type of pointer we need to move it to the correct pointer register */ @@ -7647,9 +8660,9 @@ genPointerGet (iCode * ic, iCode *pi) /* special case when cast remat */ if (p_type == GPOINTER && OP_SYMBOL(left)->remat && IS_CAST_ICODE(OP_SYMBOL(left)->rematiCode)) { - left = IC_RIGHT(OP_SYMBOL(left)->rematiCode); - type = operandType (left); - p_type = DCL_TYPE (type); + left = IC_RIGHT(OP_SYMBOL(left)->rematiCode); + type = operandType (left); + p_type = DCL_TYPE (type); } /* now that we have the pointer type we assign the pointer values */ @@ -7658,205 +8671,164 @@ genPointerGet (iCode * ic, iCode *pi) case POINTER: case IPOINTER: - genNearPointerGet (left, result, ic, pi); + genNearPointerGet (left, result, ic, pi, ifx); break; case PPOINTER: - genPagedPointerGet (left, result, ic, pi); + genPagedPointerGet (left, result, ic, pi, ifx); break; case FPOINTER: - genFarPointerGet (left, result, ic, pi); + genFarPointerGet (left, result, ic, pi, ifx); break; case CPOINTER: - genCodePointerGet (left, result, ic, pi); + genCodePointerGet (left, result, ic, pi, ifx); break; case GPOINTER: - genGenPointerGet (left, result, ic, pi); + genGenPointerGet (left, result, ic, pi, ifx); break; } } + + /*-----------------------------------------------------------------*/ /* genPackBits - generates code for packed bit storage */ /*-----------------------------------------------------------------*/ static void genPackBits (sym_link * etype, - operand * right, - char *rname, int p_type) + operand * right, + char *rname, int p_type) { - int shCount = 0; - int offset = 0; - int rLen = 0; - int blen, bstr; - char *l; + int offset = 0; /* source byte offset */ + int rlen = 0; /* remaining bitfield length */ + int blen; /* bitfield length */ + int bstr; /* bitfield starting bit within byte */ + int litval; /* source literal value (if AOP_LIT) */ + unsigned char mask; /* bitmask within current byte */ D(emitcode ("; genPackBits","")); blen = SPEC_BLEN (etype); bstr = SPEC_BSTR (etype); - l = aopGet (AOP (right), offset++, FALSE, FALSE); - MOVA (l); + /* If the bitfield length is less than a byte */ + if (blen < 8) + { + mask = ((unsigned char) (0xFF << (blen + bstr)) | + (unsigned char) (0xFF >> (8 - bstr))); - /* 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"); - } + if (AOP_TYPE (right) == AOP_LIT) + { + /* Case with a bitfield length <8 and literal source + */ + litval = (int) floatFromVal (AOP (right)->aopu.aop_lit); + litval <<= bstr; + litval &= (~mask) & 0xff; + emitPtrByteGet (rname, p_type, FALSE); + if ((mask|litval)!=0xff) + emitcode ("anl","a,#0x%02x", mask); + if (litval) + emitcode ("orl","a,#0x%02x", litval); + } + else + { + if ((blen==1) && (p_type!=GPOINTER)) + { + /* Case with a bitfield length == 1 and no generic pointer + */ + if (AOP_TYPE (right) == AOP_CRY) + emitcode ("mov", "c,%s", AOP(right)->aopu.aop_dir); + else + { + MOVA (aopGet (AOP (right), 0, FALSE, FALSE)); + emitcode ("rrc","a"); + } + emitPtrByteGet (rname, p_type, FALSE); + emitcode ("mov","acc.%d,c",bstr); + } + else + { + /* Case with a bitfield length < 8 and arbitrary source + */ + MOVA (aopGet (AOP (right), 0, FALSE, FALSE)); + /* shift and mask source value */ + AccLsh (bstr); + emitcode ("anl", "a,#0x%02x", (~mask) & 0xff); + + /* transfer A to B and get next byte */ + emitPtrByteGet (rname, p_type, TRUE); + + emitcode ("anl", "a,#0x%02x", mask); + emitcode ("orl", "a,b"); + if (p_type == GPOINTER) + emitcode ("pop", "b"); + } + } + + emitPtrByteSet (rname, p_type, "a"); + return; } - switch (p_type) + /* Bit length is greater than 7 bits. In this case, copy */ + /* all except the partial byte at the end */ + for (rlen=blen;rlen>=8;rlen-=8) { - case POINTER: - emitcode ("mov", "@%s,a", rname); - break; - - case FPOINTER: - emitcode ("movx", "@dptr,a"); - break; - - case GPOINTER: - emitcode ("lcall", "__gptrput"); - break; + emitPtrByteSet (rname, p_type, + aopGet (AOP (right), offset++, FALSE, TRUE) ); + if (rlen>8) + emitcode ("inc", "%s", rname); } - /* 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) + /* If there was a partial byte at the end */ + if (rlen) { + mask = (((unsigned char) -1 << rlen) & 0xff); - l = aopGet (AOP (right), offset++, FALSE, TRUE); - - rLen -= 8; - if (rLen < 8) - break; - - switch (p_type) - { - case POINTER: - if (*l == '@') - { - MOVA (l); - emitcode ("mov", "@%s,a", rname); - } - else - emitcode ("mov", "@%s,%s", rname, l); - break; - - case FPOINTER: - MOVA (l); - emitcode ("movx", "@dptr,a"); - break; - - case GPOINTER: - MOVA (l); - emitcode ("lcall", "__gptrput"); - break; - } - emitcode ("inc", "%s", rname); - } - - MOVA (l); + if (AOP_TYPE (right) == AOP_LIT) + { + /* Case with partial byte and literal source + */ + litval = (int) floatFromVal (AOP (right)->aopu.aop_lit); + litval >>= (blen-rlen); + litval &= (~mask) & 0xff; + emitPtrByteGet (rname, p_type, FALSE); + if ((mask|litval)!=0xff) + emitcode ("anl","a,#0x%02x", mask); + if (litval) + emitcode ("orl","a,#0x%02x", litval); + } + else + { + /* Case with partial byte and arbitrary source + */ + MOVA (aopGet (AOP (right), offset++, FALSE, FALSE)); + emitcode ("anl", "a,#0x%02x", (~mask) & 0xff); - /* 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; - - 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; - } + /* transfer A to B and get next byte */ + emitPtrByteGet (rname, p_type, TRUE); - emitcode ("anl", "a,#0x%02x", (((unsigned char) -1 << rLen) & 0xff)); - emitcode ("orl", "a,b"); + emitcode ("anl", "a,#0x%02x", mask); + emitcode ("orl", "a,b"); + if (p_type == GPOINTER) + emitcode ("pop", "b"); + } + emitPtrByteSet (rname, p_type, "a"); } - if (p_type == GPOINTER) - emitcode ("pop", "b"); - - switch (p_type) - { - - case POINTER: - emitcode ("mov", "@%s,a", rname); - break; +} - case FPOINTER: - emitcode ("movx", "@dptr,a"); - break; - case GPOINTER: - emitcode ("lcall", "__gptrput"); - break; - } -} /*-----------------------------------------------------------------*/ /* genDataPointerSet - remat pointer to data space */ /*-----------------------------------------------------------------*/ static void genDataPointerSet (operand * right, - operand * result, - iCode * ic) + operand * result, + iCode * ic) { int size, offset = 0; char *l, buffer[256]; @@ -7870,11 +8842,11 @@ genDataPointerSet (operand * right, while (size--) { if (offset) - sprintf (buffer, "(%s + %d)", l + 1, offset); + sprintf (buffer, "(%s + %d)", l + 1, offset); else - sprintf (buffer, "%s", l + 1); + sprintf (buffer, "%s", l + 1); emitcode ("mov", "%s,%s", buffer, - aopGet (AOP (right), offset++, FALSE, FALSE)); + aopGet (AOP (right), offset++, FALSE, FALSE)); } freeAsmop (right, NULL, ic, TRUE); @@ -7886,9 +8858,9 @@ genDataPointerSet (operand * right, /*-----------------------------------------------------------------*/ static void genNearPointerSet (operand * right, - operand * result, - iCode * ic, - iCode * pi) + operand * result, + iCode * ic, + iCode * pi) { asmop *aop = NULL; regs *preg = NULL; @@ -7912,50 +8884,51 @@ genNearPointerSet (operand * right, 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))) { - if ( - //AOP_TYPE (result) == AOP_STK - IS_AOP_PREG(result) - ) - { - // Aha, it is a pointer, just in disguise. - rname = aopGet (AOP (result), 0, FALSE, FALSE); - if (*rname != '@') - { - fprintf(stderr, "probable internal error: unexpected rname @ %s:%d\n", - __FILE__, __LINE__); - } - else - { - // Expected case. - rname++; // skip the '@'. - } - } - else - { - /* otherwise get a free pointer register */ - aop = newAsmop (0); - preg = getFreePtr (ic, &aop, FALSE); - emitcode ("mov", "%s,%s", - preg->name, - aopGet (AOP (result), 0, FALSE, TRUE)); - rname = preg->name; - } + if ( + //AOP_TYPE (result) == AOP_STK + IS_AOP_PREG(result) + ) + { + // Aha, it is a pointer, just in disguise. + rname = aopGet (AOP (result), 0, FALSE, FALSE); + if (*rname != '@') + { + fprintf(stderr, "probable internal error: unexpected rname @ %s:%d\n", + __FILE__, __LINE__); + } + else + { + // Expected case. + emitcode ("mov", "a%s,%s", rname + 1, rname); + rname++; // skip the '@'. + } + } + else + { + /* otherwise get a free pointer register */ + aop = newAsmop (0); + preg = getFreePtr (ic, &aop, FALSE); + emitcode ("mov", "%s,%s", + preg->name, + aopGet (AOP (result), 0, FALSE, TRUE)); + rname = preg->name; + } } else { - rname = aopGet (AOP (result), 0, FALSE, FALSE); + rname = aopGet (AOP (result), 0, FALSE, FALSE); } aopOp (right, ic, FALSE); - + /* if bitfield then unpack the bits */ - if (IS_BITVAR (retype) || IS_BITVAR (letype)) - genPackBits ((IS_BITVAR (retype) ? retype : letype), right, rname, POINTER); + if (IS_BITFIELD (retype) || IS_BITFIELD (letype)) + genPackBits ((IS_BITFIELD (retype) ? retype : letype), right, rname, POINTER); else { /* we have can just get the values */ @@ -7963,25 +8936,26 @@ genNearPointerSet (operand * right, int offset = 0; while (size--) - { - l = aopGet (AOP (right), offset, FALSE, TRUE); - if (*l == '@') - { - MOVA (l); - emitcode ("mov", "@%s,a", rname); - } - else - emitcode ("mov", "@%s,%s", rname, l); - if (size || pi) - emitcode ("inc", "%s", rname); - offset++; - } + { + l = aopGet (AOP (right), offset, FALSE, TRUE); + if (*l == '@') + { + MOVA (l); + emitcode ("mov", "@%s,a", rname); + } + else + emitcode ("mov", "@%s,%s", rname, l); + if (size || pi) + emitcode ("inc", "%s", rname); + offset++; + } } /* now some housekeeping stuff */ if (aop) /* we had to allocate for this iCode */ { - if (pi) aopPut (AOP (result),rname,0); + if (pi) + aopPut (AOP (result), rname, 0, isOperandVolatile (result, FALSE)); freeAsmop (NULL, aop, ic, TRUE); } else @@ -7992,15 +8966,15 @@ genNearPointerSet (operand * right, we have to point it back to where it belongs */ if ((AOP_SIZE (right) > 1 && - !OP_SYMBOL (result)->remat && - (OP_SYMBOL (result)->liveTo > ic->seq || - ic->depth)) && - !pi) - { - int size = AOP_SIZE (right) - 1; - while (size--) - emitcode ("dec", "%s", rname); - } + !OP_SYMBOL (result)->remat && + (OP_SYMBOL (result)->liveTo > ic->seq || + ic->depth)) && + !pi) + { + int size = AOP_SIZE (right) - 1; + while (size--) + emitcode ("dec", "%s", rname); + } } /* done */ @@ -8014,9 +8988,9 @@ genNearPointerSet (operand * right, /*-----------------------------------------------------------------*/ static void genPagedPointerSet (operand * right, - operand * result, - iCode * ic, - iCode * pi) + operand * result, + iCode * ic, + iCode * pi) { asmop *aop = NULL; regs *preg = NULL; @@ -8038,8 +9012,8 @@ genPagedPointerSet (operand * right, aop = newAsmop (0); preg = getFreePtr (ic, &aop, FALSE); emitcode ("mov", "%s,%s", - preg->name, - aopGet (AOP (result), 0, FALSE, TRUE)); + preg->name, + aopGet (AOP (result), 0, FALSE, TRUE)); rname = preg->name; } else @@ -8048,8 +9022,8 @@ genPagedPointerSet (operand * right, aopOp (right, ic, FALSE); /* if bitfield then unpack the bits */ - if (IS_BITVAR (retype) || IS_BITVAR (letype)) - genPackBits ((IS_BITVAR (retype) ? retype : letype), right, rname, PPOINTER); + if (IS_BITFIELD (retype) || IS_BITFIELD (letype)) + genPackBits ((IS_BITFIELD (retype) ? retype : letype), right, rname, PPOINTER); else { /* we have can just get the values */ @@ -8057,23 +9031,24 @@ genPagedPointerSet (operand * right, int offset = 0; while (size--) - { - l = aopGet (AOP (right), offset, FALSE, TRUE); + { + l = aopGet (AOP (right), offset, FALSE, TRUE); - MOVA (l); - emitcode ("movx", "@%s,a", rname); + MOVA (l); + emitcode ("movx", "@%s,a", rname); - if (size || pi) - emitcode ("inc", "%s", rname); + if (size || pi) + emitcode ("inc", "%s", rname); - offset++; - } + offset++; + } } /* now some housekeeping stuff */ if (aop) /* we had to allocate for this iCode */ { - if (pi) aopPut (AOP (result),rname,0); + if (pi) + aopPut (AOP (result), rname, 0, isOperandVolatile (result, FALSE)); freeAsmop (NULL, aop, ic, TRUE); } else @@ -8084,14 +9059,14 @@ genPagedPointerSet (operand * right, we have to point it back to where it belongs */ if (AOP_SIZE (right) > 1 && - !OP_SYMBOL (result)->remat && - (OP_SYMBOL (result)->liveTo > ic->seq || - ic->depth)) - { - int size = AOP_SIZE (right) - 1; - while (size--) - emitcode ("dec", "%s", rname); - } + !OP_SYMBOL (result)->remat && + (OP_SYMBOL (result)->liveTo > ic->seq || + ic->depth)) + { + int size = AOP_SIZE (right) - 1; + while (size--) + emitcode ("dec", "%s", rname); + } } /* done */ @@ -8107,7 +9082,7 @@ genPagedPointerSet (operand * right, /*-----------------------------------------------------------------*/ static void genFarPointerSet (operand * right, - operand * result, iCode * ic, iCode * pi) + operand * result, iCode * ic, iCode * pi) { int size, offset; sym_link *retype = getSpec (operandType (right)); @@ -8116,43 +9091,31 @@ genFarPointerSet (operand * right, D(emitcode ("; genFarPointerSet","")); aopOp (result, ic, FALSE); + loadDptrFromOperand (result, FALSE); - /* if the operand is already in dptr - then we do nothing else we move the value to dptr */ - if (AOP_TYPE (result) != AOP_STR) - { - /* if this is remateriazable */ - if (AOP_TYPE (result) == AOP_IMMD) - emitcode ("mov", "dptr,%s", aopGet (AOP (result), 0, TRUE, FALSE)); - else - { /* we need to get it byte by byte */ - emitcode ("mov", "dpl,%s", aopGet (AOP (result), 0, FALSE, FALSE)); - emitcode ("mov", "dph,%s", aopGet (AOP (result), 1, FALSE, FALSE)); - } - } /* so dptr know contains the address */ aopOp (right, ic, FALSE); /* if bit then unpack */ - if (IS_BITVAR (retype) || IS_BITVAR (letype)) - genPackBits ((IS_BITVAR (retype) ? retype : letype), right, "dptr", FPOINTER); + if (IS_BITFIELD (retype) || IS_BITFIELD (letype)) + genPackBits ((IS_BITFIELD (retype) ? retype : letype), right, "dptr", FPOINTER); else { size = AOP_SIZE (right); offset = 0; while (size--) - { - char *l = aopGet (AOP (right), offset++, FALSE, FALSE); - MOVA (l); - emitcode ("movx", "@dptr,a"); - if (size || pi) - emitcode ("inc", "dptr"); - } + { + char *l = aopGet (AOP (right), offset++, FALSE, FALSE); + MOVA (l); + emitcode ("movx", "@dptr,a"); + if (size || pi) + emitcode ("inc", "dptr"); + } } if (pi && AOP_TYPE (result) != AOP_STR && AOP_TYPE (result) != AOP_IMMD) { - aopPut (AOP(result),"dpl",0); - aopPut (AOP(result),"dph",1); + aopPut (AOP(result), "dpl", 0, isOperandVolatile (result, FALSE)); + aopPut (AOP(result), "dph", 1, isOperandVolatile (result, FALSE)); pi->generated=1; } freeAsmop (result, NULL, ic, TRUE); @@ -8164,7 +9127,7 @@ genFarPointerSet (operand * right, /*-----------------------------------------------------------------*/ static void genGenPointerSet (operand * right, - operand * result, iCode * ic, iCode * pi) + operand * result, iCode * ic, iCode * pi) { int size, offset; sym_link *retype = getSpec (operandType (right)); @@ -8173,52 +9136,32 @@ genGenPointerSet (operand * right, D(emitcode ("; genGenPointerSet","")); aopOp (result, ic, FALSE); + loadDptrFromOperand (result, TRUE); - /* if the operand is already in dptr - then we do nothing else we move the value to dptr */ - if (AOP_TYPE (result) != AOP_STR) - { - /* if this is remateriazable */ - if (AOP_TYPE (result) == AOP_IMMD) - { - emitcode ("mov", "dptr,%s", aopGet (AOP (result), 0, TRUE, FALSE)); - if (AOP(result)->aopu.aop_immd.from_cast_remat) - emitcode ("mov", "b,%s",aopGet(AOP (result), AOP_SIZE(result)-1, FALSE, FALSE)); - else - emitcode ("mov", "b,%s + 1", aopGet (AOP (result), 0, TRUE, FALSE)); - } - else - { /* we need to get it byte by byte */ - emitcode ("mov", "dpl,%s", aopGet (AOP (result), 0, FALSE, FALSE)); - emitcode ("mov", "dph,%s", aopGet (AOP (result), 1, FALSE, FALSE)); - emitcode ("mov", "b,%s", aopGet (AOP (result), 2, FALSE, FALSE)); - } - } /* so dptr know contains the address */ aopOp (right, ic, FALSE); /* if bit then unpack */ - if (IS_BITVAR (retype) || IS_BITVAR (letype)) - genPackBits ((IS_BITVAR (retype) ? retype : letype), right, "dptr", GPOINTER); + if (IS_BITFIELD (retype) || IS_BITFIELD (letype)) + genPackBits ((IS_BITFIELD (retype) ? retype : letype), right, "dptr", GPOINTER); else { size = AOP_SIZE (right); offset = 0; while (size--) - { - char *l = aopGet (AOP (right), offset++, FALSE, FALSE); - MOVA (l); - emitcode ("lcall", "__gptrput"); - if (size || pi) - emitcode ("inc", "dptr"); - } + { + char *l = aopGet (AOP (right), offset++, FALSE, FALSE); + MOVA (l); + emitcode ("lcall", "__gptrput"); + if (size || pi) + emitcode ("inc", "dptr"); + } } if (pi && AOP_TYPE (result) != AOP_STR && AOP_TYPE (result) != AOP_IMMD) { - aopPut (AOP(result),"dpl",0); - aopPut (AOP(result),"dph",1); - aopPut (AOP(result),"b",2); + aopPut (AOP(result), "dpl", 0, isOperandVolatile (result, FALSE)); + aopPut (AOP(result), "dph", 1, isOperandVolatile (result, FALSE)); pi->generated=1; } freeAsmop (result, NULL, ic, TRUE); @@ -8258,9 +9201,9 @@ genPointerSet (iCode * ic, iCode *pi) /* special case when cast remat */ if (p_type == GPOINTER && OP_SYMBOL(result)->remat && IS_CAST_ICODE(OP_SYMBOL(result)->rematiCode)) { - result = IC_RIGHT(OP_SYMBOL(result)->rematiCode); - type = operandType (result); - p_type = DCL_TYPE (type); + result = IC_RIGHT(OP_SYMBOL(result)->rematiCode); + type = operandType (result); + p_type = DCL_TYPE (type); } /* now that we have the pointer type we assign the pointer values */ @@ -8285,8 +9228,8 @@ genPointerSet (iCode * ic, iCode *pi) break; default: - werror (E_INTERNAL_ERROR, __FILE__, __LINE__, - "genPointerSet: illegal pointer type"); + werror (E_INTERNAL_ERROR, __FILE__, __LINE__, + "genPointerSet: illegal pointer type"); } } @@ -8319,11 +9262,11 @@ genIfx (iCode * ic, iCode * popIc) /* if the condition is a bit variable */ if (isbit && IS_ITEMP (cond) && SPIL_LOC (cond)) - genIfxJump (ic, SPIL_LOC (cond)->rname); + genIfxJump (ic, SPIL_LOC (cond)->rname, NULL, NULL, NULL); else if (isbit && !IS_ITEMP (cond)) - genIfxJump (ic, OP_SYMBOL (cond)->rname); + genIfxJump (ic, OP_SYMBOL (cond)->rname, NULL, NULL, NULL); else - genIfxJump (ic, "a"); + genIfxJump (ic, "a", NULL, NULL, NULL); ic->generated = 1; } @@ -8349,26 +9292,26 @@ genAddrOf (iCode * ic) /* if it has an offset then we need to compute it */ if (sym->stack) - { - emitcode ("mov", "a,_bp"); - emitcode ("add", "a,#0x%02x", ((sym->stack < 0) ? - ((char) (sym->stack - _G.nRegsSaved)) : - ((char) sym->stack)) & 0xff); - aopPut (AOP (IC_RESULT (ic)), "a", 0); - } + { + emitcode ("mov", "a,_bp"); + emitcode ("add", "a,#0x%02x", ((sym->stack < 0) ? + ((char) (sym->stack - _G.nRegsSaved)) : + ((char) sym->stack)) & 0xff); + aopPut (AOP (IC_RESULT (ic)), "a", 0, isOperandVolatile (IC_RESULT (ic), FALSE)); + } else - { - /* we can just move _bp */ - aopPut (AOP (IC_RESULT (ic)), "_bp", 0); - } + { + /* we can just move _bp */ + aopPut (AOP (IC_RESULT (ic)), "_bp", 0, isOperandVolatile (IC_RESULT (ic), FALSE)); + } /* fill the result with zero */ size = AOP_SIZE (IC_RESULT (ic)) - 1; offset = 1; while (size--) - { - aopPut (AOP (IC_RESULT (ic)), zero, offset++); - } + { + aopPut (AOP (IC_RESULT (ic)), zero, offset++, isOperandVolatile (IC_RESULT (ic), FALSE)); + } goto release; } @@ -8381,12 +9324,12 @@ genAddrOf (iCode * ic) { char s[SDCC_NAME_MAX]; if (offset) - sprintf (s, "#(%s >> %d)", - sym->rname, - offset * 8); + sprintf (s, "#(%s >> %d)", + sym->rname, + offset * 8); else - sprintf (s, "#%s", sym->rname); - aopPut (AOP (IC_RESULT (ic)), s, offset++); + sprintf (s, "#%s", sym->rname); + aopPut (AOP (IC_RESULT (ic)), s, offset++, isOperandVolatile (IC_RESULT (ic), FALSE)); } release: @@ -8421,7 +9364,7 @@ genFarFarAssign (operand * result, operand * right, iCode * ic) while (size--) { emitcode ("pop", "acc"); - aopPut (AOP (result), "a", --offset); + aopPut (AOP (result), "a", --offset, isOperandVolatile (result, FALSE)); } freeAsmop (result, NULL, ic, FALSE); @@ -8443,7 +9386,9 @@ genAssign (iCode * ic) right = IC_RIGHT (ic); /* if they are the same */ - if (operandsEqu (IC_RESULT (ic), IC_RIGHT (ic))) + if (operandsEqu (result, right) && + !isOperandVolatile (result, FALSE) && + !isOperandVolatile (right, FALSE)) return; aopOp (right, ic, FALSE); @@ -8461,7 +9406,9 @@ genAssign (iCode * ic) aopOp (result, ic, TRUE); /* if they are the same registers */ - if (sameRegs (AOP (right), AOP (result))) + if (sameRegs (AOP (right), AOP (result)) && + !isOperandVolatile (result, FALSE) && + !isOperandVolatile (right, FALSE)) goto release; /* if the result is a bit */ @@ -8471,25 +9418,25 @@ genAssign (iCode * ic) /* 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; - } + { + if (((int) operandLitValue (right))) + aopPut (AOP (result), one, 0, isOperandVolatile (result, FALSE)); + else + aopPut (AOP (result), zero, 0, isOperandVolatile (result, FALSE)); + 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; - } + { + emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir); + aopPut (AOP (result), "c", 0, isOperandVolatile (result, FALSE)); + goto release; + } /* we need to or */ toBoolean (right); - aopPut (AOP (result), "a", 0); + aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE)); goto release; } @@ -8507,24 +9454,26 @@ genAssign (iCode * ic) { 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, FALSE, FALSE), - size); - } + { + if ((unsigned int) ((lit >> (size * 8)) & 0x0FFL) == 0) + aopPut (AOP (result), "a", size, isOperandVolatile (result, FALSE)); + else + aopPut (AOP (result), + aopGet (AOP (right), size, FALSE, FALSE), + size, + isOperandVolatile (result, FALSE)); + } } else { while (size--) - { - aopPut (AOP (result), - aopGet (AOP (right), offset, FALSE, FALSE), - offset); - offset++; - } + { + aopPut (AOP (result), + aopGet (AOP (right), offset, FALSE, FALSE), + offset, + isOperandVolatile (result, FALSE)); + offset++; + } } release: @@ -8538,28 +9487,97 @@ release: static void genJumpTab (iCode * ic) { - symbol *jtab; + symbol *jtab,*jtablo,*jtabhi; char *l; + unsigned int count; D(emitcode ("; genJumpTab","")); - aopOp (IC_JTCOND (ic), ic, FALSE); - /* get the condition into accumulator */ - l = aopGet (AOP (IC_JTCOND (ic)), 0, FALSE, FALSE); - MOVA (l); - /* multiply by three */ - emitcode ("add", "a,acc"); - emitcode ("add", "a,%s", aopGet (AOP (IC_JTCOND (ic)), 0, FALSE, FALSE)); - freeAsmop (IC_JTCOND (ic), NULL, ic, TRUE); + count = elementsInSet( IC_JTLABELS (ic) ); - 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$", jtab->key + 100); + if( count <= 16 ) + { + /* this algorithm needs 9 cycles and 7 + 3*n bytes + if the switch argument is in an register. + (8 cycles and 6+2*n bytes if peepholes can change ljmp to sjmp) */ + aopOp (IC_JTCOND (ic), ic, FALSE); + /* get the condition into accumulator */ + l = aopGet (AOP (IC_JTCOND (ic)), 0, FALSE, FALSE); + MOVA (l); + /* multiply by three */ + emitcode ("add", "a,acc"); + emitcode ("add", "a,%s", aopGet (AOP (IC_JTCOND (ic)), 0, FALSE, FALSE)); + freeAsmop (IC_JTCOND (ic), NULL, ic, TRUE); + + jtab = newiTempLabel (NULL); + emitcode ("mov", "dptr,#%05d$", 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); + } + else + { + /* this algorithm needs 14 cycles and 13 + 2*n bytes + if the switch argument is in an register. + For n>6 this algorithm may be more compact */ + jtablo = newiTempLabel (NULL); + jtabhi = newiTempLabel (NULL); + + /* get the condition into accumulator. + Using b as temporary storage, if register push/pop is needed */ + aopOp (IC_JTCOND (ic), ic, FALSE); + l = aopGet (AOP (IC_JTCOND (ic)), 0, FALSE, FALSE); + if ((AOP_TYPE (IC_JTCOND (ic)) == AOP_R0 && _G.r0Pushed) || + (AOP_TYPE (IC_JTCOND (ic)) == AOP_R1 && _G.r1Pushed)) + { + emitcode ("mov", "b,%s", l); + l = "b"; + } + freeAsmop (IC_JTCOND (ic), NULL, ic, TRUE); + MOVA (l); + if( count <= 112 ) + { + emitcode ("add", "a,#(%05d$-3-.)", jtablo->key + 100); + emitcode ("movc", "a,@a+pc"); + emitcode ("push", "acc"); + + MOVA (l); + emitcode ("add", "a,#(%05d$-3-.)", jtabhi->key + 100); + emitcode ("movc", "a,@a+pc"); + emitcode ("push", "acc"); + } + else + { + /* this scales up to n<=255, but needs two more bytes + and changes dptr */ + emitcode ("mov", "dptr,#%05d$", jtablo->key + 100); + emitcode ("movc", "a,@a+dptr"); + emitcode ("push", "acc"); + + MOVA (l); + emitcode ("mov", "dptr,#%05d$", jtabhi->key + 100); + emitcode ("movc", "a,@a+dptr"); + emitcode ("push", "acc"); + } + + emitcode ("ret", ""); + + /* now generate jump table, LSB */ + emitcode ("", "%05d$:", jtablo->key + 100); + for (jtab = setFirstItem (IC_JTLABELS (ic)); jtab; + jtab = setNextItem (IC_JTLABELS (ic))) + emitcode (".db", "%05d$", jtab->key + 100); + + /* now generate jump table, MSB */ + emitcode ("", "%05d$:", jtabhi->key + 100); + for (jtab = setFirstItem (IC_JTLABELS (ic)); jtab; + jtab = setNextItem (IC_JTLABELS (ic))) + emitcode (".db", "%05d$>>8", jtab->key + 100); + + } } @@ -8584,53 +9602,57 @@ genCast (iCode * ic) aopOp (right, ic, FALSE); aopOp (result, ic, FALSE); - /* if the result is a bit */ - if (IS_BITVAR(OP_SYMBOL(result)->type)) + /* if the result is a bit (and not a bitfield) */ + // if (AOP_TYPE (result) == AOP_CRY) + if (IS_BITVAR (OP_SYMBOL (result)->type) + && !IS_BITFIELD (OP_SYMBOL (result)->type) ) { /* if the right size is a literal then we know what the value is */ if (AOP_TYPE (right) == AOP_LIT) - { - if (((int) operandLitValue (right))) - aopPut (AOP (result), one, 0); - else - aopPut (AOP (result), zero, 0); + { + if (((int) operandLitValue (right))) + aopPut (AOP (result), one, 0, isOperandVolatile (result, FALSE)); + else + aopPut (AOP (result), zero, 0, isOperandVolatile (result, FALSE)); - goto release; - } + goto release; + } /* the right is also a bit variable */ if (AOP_TYPE (right) == AOP_CRY) - { - emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir); - aopPut (AOP (result), "c", 0); - goto release; - } + { + emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir); + aopPut (AOP (result), "c", 0, isOperandVolatile (result, FALSE)); + goto release; + } /* we need to or */ toBoolean (right); - aopPut (AOP (result), "a", 0); + aopPut (AOP (result), "a", 0, isOperandVolatile (result, FALSE)); goto release; } + /* if they are the same size : or less */ if (AOP_SIZE (result) <= AOP_SIZE (right)) { /* if they are in the same place */ if (sameRegs (AOP (right), AOP (result))) - goto release; + goto release; /* if they in different places then copy */ size = AOP_SIZE (result); offset = 0; while (size--) - { - aopPut (AOP (result), - aopGet (AOP (right), offset, FALSE, FALSE), - offset); - offset++; - } + { + aopPut (AOP (result), + aopGet (AOP (right), offset, FALSE, FALSE), + offset, + isOperandVolatile (result, FALSE)); + offset++; + } goto release; } @@ -8645,57 +9667,59 @@ genCast (iCode * ic) /* pointer to generic pointer */ if (IS_GENPTR (ctype)) - { - if (IS_PTR (type)) - p_type = DCL_TYPE (type); - else - { - if (SPEC_SCLS(etype)==S_REGISTER) { - // let's assume it is a generic pointer - p_type=GPOINTER; - } else { - /* we have to go by the storage class */ - p_type = PTR_TYPE (SPEC_OCLS (etype)); - } - } - - /* the first two bytes are known */ - size = GPTRSIZE - 1; - offset = 0; - while (size--) - { - aopPut (AOP (result), - aopGet (AOP (right), offset, FALSE, FALSE), - offset); - offset++; - } - /* the last byte depending on type */ - { - int gpVal = pointerTypeToGPByte(p_type, NULL, NULL); - char gpValStr[10]; - - if (gpVal == -1) - { - // pointerTypeToGPByte will have bitched. - exit(1); - } - - sprintf(gpValStr, "#0x%d", gpVal); - aopPut (AOP (result), gpValStr, GPTRSIZE - 1); - } - goto release; - } + { + if (IS_PTR (type)) + p_type = DCL_TYPE (type); + else + { + if (SPEC_SCLS(etype)==S_REGISTER) { + // let's assume it is a generic pointer + p_type=GPOINTER; + } else { + /* we have to go by the storage class */ + p_type = PTR_TYPE (SPEC_OCLS (etype)); + } + } + + /* the first two bytes are known */ + size = GPTRSIZE - 1; + offset = 0; + while (size--) + { + aopPut (AOP (result), + aopGet (AOP (right), offset, FALSE, FALSE), + offset, + isOperandVolatile (result, FALSE)); + offset++; + } + /* the last byte depending on type */ + { + int gpVal = pointerTypeToGPByte(p_type, NULL, NULL); + char gpValStr[10]; + + if (gpVal == -1) + { + // pointerTypeToGPByte will have bitched. + exit(1); + } + + sprintf(gpValStr, "#0x%d", gpVal); + aopPut (AOP (result), gpValStr, GPTRSIZE - 1, isOperandVolatile (result, FALSE)); + } + goto release; + } /* just copy the pointers */ size = AOP_SIZE (result); offset = 0; while (size--) - { - aopPut (AOP (result), - aopGet (AOP (right), offset, FALSE, FALSE), - offset); - offset++; - } + { + aopPut (AOP (result), + aopGet (AOP (right), offset, FALSE, FALSE), + offset, + isOperandVolatile (result, FALSE)); + offset++; + } goto release; } @@ -8707,8 +9731,9 @@ genCast (iCode * ic) while (size--) { aopPut (AOP (result), - aopGet (AOP (right), offset, FALSE, FALSE), - offset); + aopGet (AOP (right), offset, FALSE, FALSE), + offset, + isOperandVolatile (result, FALSE)); offset++; } @@ -8718,18 +9743,18 @@ genCast (iCode * ic) if (!IS_SPEC (rtype) || SPEC_USIGN (rtype) || AOP_TYPE(right)==AOP_CRY) { while (size--) - aopPut (AOP (result), zero, offset++); + aopPut (AOP (result), zero, offset++, isOperandVolatile (result, FALSE)); } else { /* we need to extend the sign :{ */ char *l = aopGet (AOP (right), AOP_SIZE (right) - 1, - FALSE, FALSE); + FALSE, FALSE); MOVA (l); emitcode ("rlc", "a"); emitcode ("subb", "a,acc"); while (size--) - aopPut (AOP (result), "a", offset++); + aopPut (AOP (result), "a", offset++, isOperandVolatile (result, FALSE)); } /* we are done hurray !!!! */ @@ -8784,12 +9809,12 @@ genDjnz (iCode * ic, iCode * ifx) * it back after the decrement. */ char *rByte = aopGet(AOP(IC_RESULT(ic)), 0, FALSE, FALSE); - + if (strcmp(rByte, "a")) { /* Something is hopelessly wrong */ fprintf(stderr, "*** warning: internal error at %s:%d\n", - __FILE__, __LINE__); + __FILE__, __LINE__); /* We can just give up; the generated code will be inefficient, * but what the hey. */ @@ -8797,20 +9822,20 @@ genDjnz (iCode * ic, iCode * ifx) return 0; } emitcode ("dec", "%s", rByte); - aopPut(AOP(IC_RESULT(ic)), rByte, 0); + aopPut(AOP(IC_RESULT(ic)), rByte, 0, isOperandVolatile (IC_RESULT (ic), FALSE)); emitcode ("jnz", "%05d$", lbl->key + 100); } else if (IS_AOP_PREG (IC_RESULT (ic))) { emitcode ("dec", "%s", - aopGet (AOP (IC_RESULT (ic)), 0, FALSE, FALSE)); - emitcode ("mov", "a,%s", aopGet (AOP (IC_RESULT (ic)), 0, FALSE, FALSE)); + aopGet (AOP (IC_RESULT (ic)), 0, FALSE, FALSE)); + MOVA (aopGet (AOP (IC_RESULT (ic)), 0, FALSE, FALSE)); emitcode ("jnz", "%05d$", lbl->key + 100); } else { emitcode ("djnz", "%s,%05d$", aopGet (AOP (IC_RESULT (ic)), 0, FALSE, FALSE), - lbl->key + 100); + lbl->key + 100); } emitcode ("sjmp", "%05d$", lbl1->key + 100); emitcode ("", "%05d$:", lbl->key + 100); @@ -8834,40 +9859,200 @@ genReceive (iCode * ic) if (ic->argreg == 1) { /* first parameter */ if (isOperandInFarSpace (IC_RESULT (ic)) && - (OP_SYMBOL (IC_RESULT (ic))->isspilt || - IS_TRUE_SYMOP (IC_RESULT (ic)))) { - - offset = fReturnSizeMCS51 - size; - while (size--) { - emitcode ("push", "%s", (strcmp (fReturn[fReturnSizeMCS51 - offset - 1], "a") ? - fReturn[fReturnSizeMCS51 - offset - 1] : "acc")); - offset++; - } - aopOp (IC_RESULT (ic), ic, FALSE); - size = AOP_SIZE (IC_RESULT (ic)); - offset = 0; - while (size--) { - emitcode ("pop", "acc"); - aopPut (AOP (IC_RESULT (ic)), "a", offset++); - } - + (OP_SYMBOL (IC_RESULT (ic))->isspilt || + IS_TRUE_SYMOP (IC_RESULT (ic)))) { + + regs *tempRegs[4]; + int receivingA = 0; + int roffset = 0; + + for (offset = 0; offset0; offset--) + emitcode("mov","%s,%s", tempRegs[roffset++]->name, fReturn[offset]); + emitcode("mov","a,%s", fReturn[0]); + _G.accInUse++; + aopOp (IC_RESULT (ic), ic, FALSE); + _G.accInUse--; + aopPut (AOP (IC_RESULT (ic)), "a", offset, + isOperandVolatile (IC_RESULT (ic), FALSE)); + for (offset = 1; offsetname, offset, + isOperandVolatile (IC_RESULT (ic), FALSE)); + goto release; + } + } + else + { + if (getTempRegs(tempRegs, size, ic)) + { + for (offset = 0; offsetname, fReturn[offset]); + aopOp (IC_RESULT (ic), ic, FALSE); + for (offset = 0; offsetname, offset, + isOperandVolatile (IC_RESULT (ic), FALSE)); + goto release; + } + } + + offset = fReturnSizeMCS51 - size; + while (size--) { + emitcode ("push", "%s", (strcmp (fReturn[fReturnSizeMCS51 - offset - 1], "a") ? + fReturn[fReturnSizeMCS51 - offset - 1] : "acc")); + offset++; + } + aopOp (IC_RESULT (ic), ic, FALSE); + size = AOP_SIZE (IC_RESULT (ic)); + offset = 0; + while (size--) { + emitcode ("pop", "acc"); + aopPut (AOP (IC_RESULT (ic)), "a", offset++, isOperandVolatile (IC_RESULT (ic), FALSE)); + } + } else { - _G.accInUse++; - aopOp (IC_RESULT (ic), ic, FALSE); - _G.accInUse--; - assignResultValue (IC_RESULT (ic)); + _G.accInUse++; + aopOp (IC_RESULT (ic), ic, FALSE); + _G.accInUse--; + assignResultValue (IC_RESULT (ic)); } } else { /* second receive onwards */ int rb1off ; aopOp (IC_RESULT (ic), ic, FALSE); rb1off = ic->argreg; while (size--) { - aopPut (AOP (IC_RESULT (ic)), rb1regs[rb1off++ -5], offset++); + aopPut (AOP (IC_RESULT (ic)), rb1regs[rb1off++ -5], offset++, isOperandVolatile (IC_RESULT (ic), FALSE)); } } + +release: freeAsmop (IC_RESULT (ic), NULL, ic, TRUE); } +/*-----------------------------------------------------------------*/ +/* genDummyRead - generate code for dummy read of volatiles */ +/*-----------------------------------------------------------------*/ +static void +genDummyRead (iCode * ic) +{ + operand *op; + int size, offset; + + D(emitcode("; genDummyRead","")); + + op = IC_RIGHT (ic); + if (op && IS_SYMOP (op)) + { + aopOp (op, ic, FALSE); + + /* if the result is a bit */ + if (AOP_TYPE (op) == AOP_CRY) + emitcode ("mov", "c,%s", AOP (op)->aopu.aop_dir); + else + { + /* bit variables done */ + /* general case */ + size = AOP_SIZE (op); + offset = 0; + while (size--) + { + MOVA (aopGet (AOP (op), offset, FALSE, FALSE)); + offset++; + } + } + + freeAsmop (op, NULL, ic, TRUE); + } + + op = IC_LEFT (ic); + if (op && IS_SYMOP (op)) + { + aopOp (op, ic, FALSE); + + /* if the result is a bit */ + if (AOP_TYPE (op) == AOP_CRY) + emitcode ("mov", "c,%s", AOP (op)->aopu.aop_dir); + else + { + /* bit variables done */ + /* general case */ + size = AOP_SIZE (op); + offset = 0; + while (size--) + { + MOVA (aopGet (AOP (op), offset, FALSE, FALSE)); + offset++; + } + } + + freeAsmop (op, NULL, ic, TRUE); + } +} + +/*-----------------------------------------------------------------*/ +/* genCritical - generate code for start of a critical sequence */ +/*-----------------------------------------------------------------*/ +static void +genCritical (iCode *ic) +{ + symbol *tlbl = newiTempLabel (NULL); + + D(emitcode("; genCritical","")); + + if (IC_RESULT (ic)) + aopOp (IC_RESULT (ic), ic, TRUE); + + emitcode ("setb", "c"); + emitcode ("jbc", "ea,%05d$", (tlbl->key + 100)); /* atomic test & clear */ + emitcode ("clr", "c"); + emitcode ("", "%05d$:", (tlbl->key + 100)); + + if (IC_RESULT (ic)) + outBitC (IC_RESULT (ic)); /* save old ea in an operand */ + else + emitcode ("push", "psw"); /* save old ea via c in psw on top of stack*/ + + if (IC_RESULT (ic)) + freeAsmop (IC_RESULT (ic), NULL, ic, TRUE); +} + +/*-----------------------------------------------------------------*/ +/* genEndCritical - generate code for end of a critical sequence */ +/*-----------------------------------------------------------------*/ +static void +genEndCritical (iCode *ic) +{ + D(emitcode("; genEndCritical","")); + + if (IC_RIGHT (ic)) + { + aopOp (IC_RIGHT (ic), ic, FALSE); + if (AOP_TYPE (IC_RIGHT (ic)) == AOP_CRY) + { + emitcode ("mov", "c,%s", IC_RIGHT (ic)->aop->aopu.aop_dir); + emitcode ("mov", "ea,c"); + } + else + { + MOVA (aopGet (AOP (IC_RIGHT (ic)), 0, FALSE, FALSE)); + emitcode ("rrc", "a"); + emitcode ("mov", "ea,c"); + } + freeAsmop (IC_RIGHT (ic), NULL, ic, TRUE); + } + else + { + emitcode ("pop", "psw"); /* restore ea via c in psw on top of stack */ + emitcode ("mov", "ea,c"); + } +} + /*-----------------------------------------------------------------*/ /* gen51Code - generate code for 8051 based controllers */ /*-----------------------------------------------------------------*/ @@ -8876,22 +10061,18 @@ gen51Code (iCode * lic) { iCode *ic; int cln = 0; + /* int cseq = 0; */ + _G.currentFunc = NULL; lineHead = lineCurr = NULL; /* print the allocation information */ - if (allocInfo) + if (allocInfo && currFunc) printAllocInfo (currFunc, codeOutFile); /* if debug information required */ if (options.debug && currFunc) { - cdbSymbol (currFunc, cdbFile, FALSE, TRUE); - _G.debugLine = 1; - if (IS_STATIC (currFunc->etype)) - emitcode ("", "F%s$%s$0$0 ==.", moduleName, currFunc->name); - else - emitcode ("", "G$%s$0$0 ==.", currFunc->name); - _G.debugLine = 0; + debugFile->writeFunction (currFunc, lic); } /* stack pointer name */ if (options.useXstack) @@ -8902,217 +10083,254 @@ gen51Code (iCode * lic) for (ic = lic; ic; ic = ic->next) { + _G.current_iCode = ic; if (ic->lineno && cln != ic->lineno) - { - if (options.debug) - { - _G.debugLine = 1; - emitcode ("", "C$%s$%d$%d$%d ==.", - FileBaseName (ic->filename), ic->lineno, - ic->level, ic->block); - _G.debugLine = 0; - } - emitcode ("", "; %s:%d: %s", ic->filename, ic->lineno, - printCLine(ic->filename, ic->lineno)); - cln = ic->lineno; - } + { + if (options.debug) + { + debugFile->writeCLine(ic); + } + if (!options.noCcodeInAsm) { + emitcode ("", ";%s:%d: %s", ic->filename, ic->lineno, + printCLine(ic->filename, ic->lineno)); + } + cln = ic->lineno; + } + #if 0 + if (ic->seqPoint && ic->seqPoint != cseq) + { + emitcode ("", "; sequence point %d", ic->seqPoint); + cseq = ic->seqPoint; + } + #endif + if (options.iCodeInAsm) { + char regsInUse[80]; + int i; + + for (i=0; i<8; i++) { + sprintf (®sInUse[i], + "%c", ic->riu & (1<seq, printILine(ic)); + } /* if the result is marked as spilt and rematerializable or code for this has already been generated then do nothing */ if (resultRemat (ic) || ic->generated) - continue; + continue; /* depending on the operation */ switch (ic->op) - { - case '!': - genNot (ic); - break; - - case '~': - genCpl (ic); - break; - - case UNARYMINUS: - genUminus (ic); - break; - - case IPUSH: - genIpush (ic); - break; - - case IPOP: - /* IPOP happens only when trying to restore a - spilt live range, if there is an ifx statement - following this pop then the if statement might - be using some of the registers being popped which - would destory the contents of the register so - we need to check for this condition and handle it */ - if (ic->next && - ic->next->op == IFX && - regsInCommon (IC_LEFT (ic), IC_COND (ic->next))) - genIfx (ic->next, ic); - else - genIpop (ic); - break; - - case CALL: - genCall (ic); - break; - - case PCALL: - genPcall (ic); - break; - - case FUNCTION: - genFunction (ic); - break; - - case ENDFUNCTION: - genEndFunction (ic); - break; - - case RETURN: - genRet (ic); - break; - - case LABEL: - genLabel (ic); - break; - - case GOTO: - genGoto (ic); - break; - - case '+': - genPlus (ic); - break; - - case '-': - if (!genDjnz (ic, ifxForOp (IC_RESULT (ic), ic))) - genMinus (ic); - break; - - case '*': - genMult (ic); - break; - - case '/': - genDiv (ic); - break; - - case '%': - genMod (ic); - break; - - case '>': - genCmpGt (ic, ifxForOp (IC_RESULT (ic), ic)); - break; - - case '<': - genCmpLt (ic, ifxForOp (IC_RESULT (ic), ic)); - break; - - case LE_OP: - case GE_OP: - case NE_OP: - - /* note these two are xlated by algebraic equivalence - during parsing SDCC.y */ - werror (E_INTERNAL_ERROR, __FILE__, __LINE__, - "got '>=' or '<=' shouldn't have come here"); - break; - - case EQ_OP: - genCmpEq (ic, ifxForOp (IC_RESULT (ic), ic)); - break; - - case AND_OP: - genAndOp (ic); - break; - - case OR_OP: - genOrOp (ic); - break; - - case '^': - genXor (ic, ifxForOp (IC_RESULT (ic), ic)); - break; - - case '|': - genOr (ic, ifxForOp (IC_RESULT (ic), ic)); - break; - - case BITWISEAND: - genAnd (ic, ifxForOp (IC_RESULT (ic), ic)); - break; - - case INLINEASM: - genInline (ic); - break; - - case RRC: - genRRC (ic); - break; - - case RLC: - genRLC (ic); - break; - - case GETHBIT: - genGetHbit (ic); - break; - - case LEFT_OP: - genLeftShift (ic); - break; - - case RIGHT_OP: - genRightShift (ic); - break; - - case GET_VALUE_AT_ADDRESS: - genPointerGet (ic, hasInc(IC_LEFT(ic),ic,getSize(operandType(IC_RESULT(ic))))); - break; - - case '=': - if (POINTER_SET (ic)) - genPointerSet (ic, hasInc (IC_RESULT(ic),ic,getSize(operandType(IC_RIGHT(ic))))); - else - genAssign (ic); - break; - - case IFX: - genIfx (ic, NULL); - break; - - case ADDRESS_OF: - genAddrOf (ic); - break; - - case JUMPTABLE: - genJumpTab (ic); - break; - - case CAST: - genCast (ic); - break; - - case RECEIVE: - genReceive (ic); - break; - - case SEND: - addSet (&_G.sendSet, ic); - break; - - default: - ic = ic; - } + { + case '!': + genNot (ic); + break; + + case '~': + genCpl (ic); + break; + + case UNARYMINUS: + genUminus (ic); + break; + + case IPUSH: + genIpush (ic); + break; + + case IPOP: + /* IPOP happens only when trying to restore a + spilt live range, if there is an ifx statement + following this pop then the if statement might + be using some of the registers being popped which + would destory the contents of the register so + we need to check for this condition and handle it */ + if (ic->next && + ic->next->op == IFX && + regsInCommon (IC_LEFT (ic), IC_COND (ic->next))) + genIfx (ic->next, ic); + else + genIpop (ic); + break; + + case CALL: + genCall (ic); + break; + + case PCALL: + genPcall (ic); + break; + + case FUNCTION: + genFunction (ic); + break; + + case ENDFUNCTION: + genEndFunction (ic); + break; + + case RETURN: + genRet (ic); + break; + + case LABEL: + genLabel (ic); + break; + + case GOTO: + genGoto (ic); + break; + + case '+': + genPlus (ic); + break; + + case '-': + if (!genDjnz (ic, ifxForOp (IC_RESULT (ic), ic))) + genMinus (ic); + break; + + case '*': + genMult (ic); + break; + + case '/': + genDiv (ic); + break; + + case '%': + genMod (ic); + break; + + case '>': + genCmpGt (ic, ifxForOp (IC_RESULT (ic), ic)); + break; + + case '<': + genCmpLt (ic, ifxForOp (IC_RESULT (ic), ic)); + break; + + case LE_OP: + case GE_OP: + case NE_OP: + + /* note these two are xlated by algebraic equivalence + during parsing SDCC.y */ + werror (E_INTERNAL_ERROR, __FILE__, __LINE__, + "got '>=' or '<=' shouldn't have come here"); + break; + + case EQ_OP: + genCmpEq (ic, ifxForOp (IC_RESULT (ic), ic)); + break; + + case AND_OP: + genAndOp (ic); + break; + + case OR_OP: + genOrOp (ic); + break; + + case '^': + genXor (ic, ifxForOp (IC_RESULT (ic), ic)); + break; + + case '|': + genOr (ic, ifxForOp (IC_RESULT (ic), ic)); + break; + + case BITWISEAND: + genAnd (ic, ifxForOp (IC_RESULT (ic), ic)); + break; + + case INLINEASM: + genInline (ic); + break; + + case RRC: + genRRC (ic); + break; + + case RLC: + genRLC (ic); + break; + + case GETHBIT: + genGetHbit (ic); + break; + + case LEFT_OP: + genLeftShift (ic); + break; + + case RIGHT_OP: + genRightShift (ic); + break; + + case GET_VALUE_AT_ADDRESS: + genPointerGet (ic, + hasInc (IC_LEFT (ic), ic, + getSize (operandType (IC_RESULT (ic)))), + ifxForOp (IC_RESULT (ic), ic) ); + break; + + case '=': + if (POINTER_SET (ic)) + genPointerSet (ic, hasInc (IC_RESULT(ic),ic,getSize(operandType(IC_RIGHT(ic))))); + else + genAssign (ic); + break; + + case IFX: + genIfx (ic, NULL); + break; + + case ADDRESS_OF: + genAddrOf (ic); + break; + + case JUMPTABLE: + genJumpTab (ic); + break; + + case CAST: + genCast (ic); + break; + + case RECEIVE: + genReceive (ic); + break; + + case SEND: + addSet (&_G.sendSet, ic); + break; + + case DUMMY_READ_VOLATILE: + genDummyRead (ic); + break; + + case CRITICAL: + genCritical (ic); + break; + + case ENDCRITICAL: + genEndCritical (ic); + break; + + case SWAP: + genSwap (ic); + break; + + default: + ic = ic; + } } + _G.current_iCode = NULL; /* now we are ready to call the peep hole optimizer */