1 /*-------------------------------------------------------------------------
2 gen.c - source file for code generation for DS80C390
4 Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
5 and - Jean-Louis VERN.jlvern@writeme.com (1999)
6 Bug Fixes - Wojciech Stryjewski wstryj1@tiger.lsu.edu (1999 v2.1.9a)
7 DS390 adaptation by Kevin Vigor <kevin@vigor.nu>
9 This program is free software; you can redistribute it and/or modify it
10 under the terms of the GNU General Public License as published by the
11 Free Software Foundation; either version 2, or (at your option) any
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 In other words, you are welcome to use, share and improve this program.
24 You are forbidden to forbid anyone else to use, share and improve
25 what you give them. Help stamp out software-hoarding!
26 -------------------------------------------------------------------------*/
36 #include "SDCCglobl.h"
39 #ifdef HAVE_SYS_ISA_DEFS_H
40 #include <sys/isa_defs.h>
42 #ifdef HAVE_MACHINE_ENDIAN_H
43 #include <machine/endian.h>
48 #if !defined(__BORLANDC__) && !defined(_MSC_VER) && !defined(__MINGW32__) && !defined(__CYGWIN__)
49 #warning "Cannot determine ENDIANESS of this machine assuming LITTLE_ENDIAN"
50 #warning "If you running sdcc on an INTEL 80x86 Platform you are okay"
56 #define BETTER_LITERAL_SHIFT
58 char *aopLiteral (value * val, int offset);
61 /* this is the down and dirty file with all kinds of
62 kludgy & hacky stuff. This is what it is all about
63 CODE GENERATION for a specific MCU . some of the
64 routines may be reusable, will have to see */
66 static char *zero = "#0";
67 static char *one = "#1";
72 #define TR_DPTR(s) if (options.model != MODEL_FLAT24) { emitcode(";", " Use_DPTR1 %s ", s); }
73 #define TR_AP(s) if (options.model != MODEL_FLAT24) { emitcode(";", " Use_AP %s ", s); }
75 unsigned fReturnSizeDS390 = 5; /* shared with ralloc.c */
76 static char *fReturn24[] =
77 {"dpl", "dph", "dpx", "b", "a"};
78 static char *fReturn16[] =
79 {"dpl", "dph", "b", "a"};
80 static char **fReturn = fReturn24;
81 static char *accUse[] =
83 static char *dptrn[2][3];
84 static char *javaRet[] = { "r0","r1","r2","r3"};
85 static short rbank = -1;
102 static char *rb1regs[] = {
103 "b1_0","b1_1","b1_2","b1_3","b1_4","b1_5","b1_6","b1_7"
106 static void saveRBank (int, iCode *, bool);
108 #define RESULTONSTACK(x) \
109 (IC_RESULT(x) && IC_RESULT(x)->aop && \
110 IC_RESULT(x)->aop->type == AOP_STK )
112 /* #define MOVA(x) if (strcmp(x,"a") && strcmp(x,"acc")) emitcode("mov","a,%s",x); */
113 #define MOVA(x) { char *_mova_tmp = strdup(x); \
114 if (strcmp(_mova_tmp,"a") && strcmp(_mova_tmp,"acc")) \
116 emitcode("mov","a,%s",_mova_tmp); \
120 #define CLRC emitcode("clr","c")
121 #define SETC emitcode("setb","c")
123 // A scratch register which will be used to hold
124 // result bytes from operands in far space via DPTR2.
125 #define DP2_RESULT_REG "_ap"
127 static lineNode *lineHead = NULL;
128 static lineNode *lineCurr = NULL;
130 static unsigned char SLMask[] =
131 {0xFF, 0xFE, 0xFC, 0xF8, 0xF0,
132 0xE0, 0xC0, 0x80, 0x00};
133 static unsigned char SRMask[] =
134 {0xFF, 0x7F, 0x3F, 0x1F, 0x0F,
135 0x07, 0x03, 0x01, 0x00};
141 #define PROTECT_SP {if (options.protect_sp_update) { \
142 symbol *lbl = newiTempLabel(NULL); \
143 emitcode ("setb","F1"); \
144 emitcode ("jbc","EA,!tlabel",lbl->key+100); \
145 emitcode ("clr","F1"); \
146 emitcode ("","!tlabeldef",lbl->key+100); \
148 #define UNPROTECT_SP { if (options.protect_sp_update) { \
149 symbol *lbl = newiTempLabel(NULL); \
150 emitcode ("jnb","F1,!tlabel",lbl->key+100); \
151 emitcode ("setb","EA"); \
152 emitcode ("","!tlabeldef",lbl->key+100); \
156 /*-----------------------------------------------------------------*/
157 /* emitcode - writes the code into a file : for now it is simple */
158 /*-----------------------------------------------------------------*/
160 emitcode (char *inst, char *fmt,...)
163 char lb[INITIAL_INLINEASM];
171 sprintf (lb, "%s\t", inst);
173 sprintf (lb, "%s", inst);
174 tvsprintf (lb + (strlen (lb)), fmt, ap);
177 tvsprintf (lb, fmt, ap);
179 while (isspace (*lbp))
183 lineCurr = (lineCurr ?
184 connectLine (lineCurr, newLineNode (lb)) :
185 (lineHead = newLineNode (lb)));
186 lineCurr->isInline = _G.inLine;
187 lineCurr->isDebug = _G.debugLine;
191 /*-----------------------------------------------------------------*/
192 /* getFreePtr - returns r0 or r1 whichever is free or can be pushed */
193 /*-----------------------------------------------------------------*/
195 getFreePtr (iCode * ic, asmop ** aopp, bool result)
197 bool r0iu = FALSE, r1iu = FALSE;
198 bool r0ou = FALSE, r1ou = FALSE;
200 /* the logic: if r0 & r1 used in the instruction
201 then we are in trouble otherwise */
203 /* first check if r0 & r1 are used by this
204 instruction, in which case we are in trouble */
205 r0iu = bitVectBitValue (ic->rUsed, R0_IDX);
206 r1iu = bitVectBitValue (ic->rUsed, R1_IDX);
211 r0ou = bitVectBitValue (ic->rMask, R0_IDX);
212 r1ou = bitVectBitValue (ic->rMask, R1_IDX);
214 /* if no usage of r0 then return it */
217 ic->rUsed = bitVectSetBit (ic->rUsed, R0_IDX);
218 (*aopp)->type = AOP_R0;
220 return (*aopp)->aopu.aop_ptr = ds390_regWithIdx (R0_IDX);
223 /* if no usage of r1 then return it */
226 ic->rUsed = bitVectSetBit (ic->rUsed, R1_IDX);
227 (*aopp)->type = AOP_R1;
229 return (*aopp)->aopu.aop_ptr = ds390_regWithIdx (R1_IDX);
232 /* now we know they both have usage */
233 /* if r0 not used in this instruction */
236 /* push it if not already pushed */
239 emitcode ("push", "%s",
240 ds390_regWithIdx (R0_IDX)->dname);
244 ic->rUsed = bitVectSetBit (ic->rUsed, R0_IDX);
245 (*aopp)->type = AOP_R0;
247 return (*aopp)->aopu.aop_ptr = ds390_regWithIdx (R0_IDX);
250 /* if r1 not used then */
254 /* push it if not already pushed */
257 emitcode ("push", "%s",
258 ds390_regWithIdx (R1_IDX)->dname);
262 ic->rUsed = bitVectSetBit (ic->rUsed, R1_IDX);
263 (*aopp)->type = AOP_R1;
264 return ds390_regWithIdx (R1_IDX);
268 /* I said end of world but not quite end of world yet */
269 /* if this is a result then we can push it on the stack */
272 (*aopp)->type = AOP_STK;
276 /* other wise this is true end of the world */
277 werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
278 "getFreePtr should never reach here");
282 /*-----------------------------------------------------------------*/
283 /* newAsmop - creates a new asmOp */
284 /*-----------------------------------------------------------------*/
286 newAsmop (short type)
290 aop = Safe_calloc (1, sizeof (asmop));
295 static int _currentDPS; /* Current processor DPS. */
296 static int _desiredDPS; /* DPS value compiler thinks we should be using. */
297 static int _lazyDPS = 0; /* if non-zero, we are doing lazy evaluation of DPS changes. */
299 /*-----------------------------------------------------------------*/
300 /* genSetDPTR: generate code to select which DPTR is in use (zero */
301 /* selects standard DPTR (DPL/DPH/DPX), non-zero selects DS390 */
302 /* alternate DPTR (DPL1/DPH1/DPX1). */
303 /*-----------------------------------------------------------------*/
308 /* If we are doing lazy evaluation, simply note the desired
309 * change, but don't emit any code yet.
319 emitcode ("mov", "dps,#0");
324 emitcode ("mov", "dps,#1");
328 /*-----------------------------------------------------------------*/
329 /* _startLazyDPSEvaluation: call to start doing lazy DPS evaluation */
331 /* Any code that operates on DPTR (NB: not on the individual */
332 /* components, like DPH) *must* call _flushLazyDPS() before using */
333 /* DPTR within a lazy DPS evaluation block. */
335 /* Note that aopPut and aopGet already contain the proper calls to */
336 /* _flushLazyDPS, so it is safe to use these calls within a lazy */
337 /* DPS evaluation block. */
339 /* Also, _flushLazyDPS must be called before any flow control */
340 /* operations that could potentially branch out of the block. */
342 /* Lazy DPS evaluation is simply an optimization (though an */
343 /* important one), so if in doubt, leave it out. */
344 /*-----------------------------------------------------------------*/
346 _startLazyDPSEvaluation (void)
350 #ifdef BETTER_LITERAL_SHIFT
357 /*-----------------------------------------------------------------*/
358 /* _flushLazyDPS: emit code to force the actual DPS setting to the */
359 /* desired one. Call before using DPTR within a lazy DPS evaluation */
361 /*-----------------------------------------------------------------*/
371 if (_desiredDPS != _currentDPS)
375 emitcode ("inc", "dps");
379 emitcode ("dec", "dps");
381 _currentDPS = _desiredDPS;
385 /*-----------------------------------------------------------------*/
386 /* _endLazyDPSEvaluation: end lazy DPS evaluation block. */
388 /* Forces us back to the safe state (standard DPTR selected). */
389 /*-----------------------------------------------------------------*/
391 _endLazyDPSEvaluation (void)
393 #ifdef BETTER_LITERAL_SHIFT
412 /*-----------------------------------------------------------------*/
413 /* pointerCode - returns the code for a pointer type */
414 /*-----------------------------------------------------------------*/
416 pointerCode (sym_link * etype)
419 return PTR_TYPE (SPEC_OCLS (etype));
423 /*-----------------------------------------------------------------*/
424 /* aopForSym - for a true symbol */
425 /*-----------------------------------------------------------------*/
427 aopForSym (iCode * ic, symbol * sym, bool result, bool useDP2)
430 memmap *space = SPEC_OCLS (sym->etype);
432 /* if already has one */
436 /* assign depending on the storage class */
437 /* if it is on the stack or indirectly addressable */
438 /* space we need to assign either r0 or r1 to it */
439 if ((sym->onStack && !options.stack10bit) || sym->iaccess)
441 sym->aop = aop = newAsmop (0);
442 aop->aopu.aop_ptr = getFreePtr (ic, &aop, result);
443 aop->size = getSize (sym->type);
445 /* now assign the address of the variable to
446 the pointer register */
447 if (aop->type != AOP_STK)
453 emitcode ("push", "acc");
456 emitcode ("push", "b");
458 emitcode ("mov", "a,_bp");
459 emitcode ("add", "a,#!constbyte",
461 ((char) (sym->stack - _G.nRegsSaved)) :
462 ((char) sym->stack)) & 0xff);
463 emitcode ("mov", "%s,a",
464 aop->aopu.aop_ptr->name);
467 emitcode ("pop", "b");
470 emitcode ("pop", "acc");
473 emitcode ("mov", "%s,#%s",
474 aop->aopu.aop_ptr->name,
476 aop->paged = space->paged;
479 aop->aopu.aop_stk = sym->stack;
483 if (sym->onStack && options.stack10bit)
485 short stack_val = -((sym->stack < 0) ?
486 ((short) (sym->stack - _G.nRegsSaved)) :
487 ((short) sym->stack)) ;
488 if (useDP2 && _G.dptr1InUse) {
489 emitcode ("push","dpl1");
490 emitcode ("push","dph1");
491 emitcode ("push","dpx1");
492 } else if (_G.dptrInUse ) {
493 emitcode ("push","dpl");
494 emitcode ("push","dph");
495 emitcode ("push","dpx");
497 /* It's on the 10 bit stack, which is located in
500 if (stack_val < 0 && stack_val > -5) { /* between -5 & -1 */
502 if (options.model == MODEL_FLAT24)
503 emitcode ("mov", "dpx1,#!constbyte", (options.stack_loc >> 16) & 0xff);
505 emitcode ("mov", "dph1,_bpx+1");
506 emitcode ("mov", "dpl1,_bpx");
507 emitcode ("mov","dps,#1");
509 if (options.model == MODEL_FLAT24)
510 emitcode ("mov", "dpx,#!constbyte", (options.stack_loc >> 16) & 0xff);
511 emitcode ("mov", "dph,_bpx+1");
512 emitcode ("mov", "dpl,_bpx");
514 stack_val = -stack_val;
515 while (stack_val--) {
516 emitcode ("inc","dptr");
519 emitcode("mov","dps,#0");
523 emitcode ("push", "acc");
526 emitcode ("push", "b");
528 emitcode ("mov", "a,_bpx");
529 emitcode ("clr","c");
530 emitcode ("subb", "a,#!constbyte", stack_val & 0xff);
531 emitcode ("mov","b,a");
532 emitcode ("mov","a,_bpx+1");
533 emitcode ("subb","a,#!constbyte",(stack_val >> 8) & 0xff);
535 if (options.model == MODEL_FLAT24)
536 emitcode ("mov", "dpx1,#!constbyte", (options.stack_loc >> 16) & 0xff);
538 emitcode ("mov", "dph1,a");
539 emitcode ("mov", "dpl1,b");
541 if (options.model == MODEL_FLAT24)
542 emitcode ("mov", "dpx,#!constbyte", (options.stack_loc >> 16) & 0xff);
543 emitcode ("mov", "dph,a");
544 emitcode ("mov", "dpl,b");
548 emitcode ("pop", "b");
551 emitcode ("pop", "acc");
553 sym->aop = aop = newAsmop ((short) (useDP2 ? AOP_DPTR2 : AOP_DPTR));
554 aop->size = getSize (sym->type);
558 /* if in bit space */
559 if (IN_BITSPACE (space))
561 sym->aop = aop = newAsmop (AOP_CRY);
562 aop->aopu.aop_dir = sym->rname;
563 aop->size = getSize (sym->type);
566 /* if it is in direct space */
567 if (IN_DIRSPACE (space))
569 sym->aop = aop = newAsmop (AOP_DIR);
570 aop->aopu.aop_dir = sym->rname;
571 aop->size = getSize (sym->type);
575 /* special case for a function */
576 if (IS_FUNC (sym->type))
578 sym->aop = aop = newAsmop (AOP_IMMD);
579 aop->aopu.aop_immd.aop_immd1 = Safe_calloc (1, strlen (sym->rname) + 1);
580 strcpy (aop->aopu.aop_immd.aop_immd1, sym->rname);
581 aop->size = FPTRSIZE;
585 /* only remaining is far space */
586 /* in which case DPTR gets the address */
587 sym->aop = aop = newAsmop ((short) (useDP2 ? AOP_DPTR2 : AOP_DPTR));
592 emitcode ("mov", "dptr,#%s", sym->rname);
597 emitcode ("mov", "dptr,#%s", sym->rname);
599 aop->size = getSize (sym->type);
601 /* if it is in code space */
602 if (IN_CODESPACE (space))
608 /*-----------------------------------------------------------------*/
609 /* aopForRemat - rematerialzes an object */
610 /*-----------------------------------------------------------------*/
612 aopForRemat (symbol * sym)
614 iCode *ic = sym->rematiCode;
615 asmop *aop = newAsmop (AOP_IMMD);
622 val += (int) operandLitValue (IC_RIGHT (ic));
623 else if (ic->op == '-')
624 val -= (int) operandLitValue (IC_RIGHT (ic));
625 else if (IS_CAST_ICODE(ic)) {
626 sym_link *from_type = operandType(IC_RIGHT(ic));
627 aop->aopu.aop_immd.from_cast_remat = 1;
628 ic = OP_SYMBOL (IC_RIGHT (ic))->rematiCode;
629 ptr_type = DCL_TYPE(from_type);
630 if (ptr_type == IPOINTER) {
637 ic = OP_SYMBOL (IC_LEFT (ic))->rematiCode;
641 sprintf (buffer, "(%s %c 0x%04x)",
642 OP_SYMBOL (IC_LEFT (ic))->rname,
643 val >= 0 ? '+' : '-',
646 if (IS_ASSIGN_ICODE(ic) && isOperandLiteral(IC_RIGHT(ic)))
647 sprintf(buffer,"0x%x",(int) operandLitValue (IC_RIGHT (ic)));
649 strcpy (buffer, OP_SYMBOL (IC_LEFT (ic))->rname);
652 aop->aopu.aop_immd.aop_immd1 = Safe_calloc (1, strlen (buffer) + 1);
653 strcpy (aop->aopu.aop_immd.aop_immd1, buffer);
654 /* set immd2 field if required */
655 if (aop->aopu.aop_immd.from_cast_remat) {
656 tsprintf(buffer,"#!constbyte",ptr_type);
657 aop->aopu.aop_immd.aop_immd2 = Safe_calloc (1, strlen (buffer) + 1);
658 strcpy (aop->aopu.aop_immd.aop_immd2, buffer);
664 /*-----------------------------------------------------------------*/
665 /* aopHasRegs - returns true if aop has regs between from-to */
666 /*-----------------------------------------------------------------*/
667 static int aopHasRegs(asmop *aop, int from, int to)
671 if (aop->type != AOP_REG) return 0; /* if not assigned to regs */
673 for (; size < aop->size ; size++) {
675 for (reg = from ; reg <= to ; reg++)
676 if (aop->aopu.aop_reg[size] == ds390_regWithIdx(reg)) return 1;
681 /*-----------------------------------------------------------------*/
682 /* regsInCommon - two operands have some registers in common */
683 /*-----------------------------------------------------------------*/
685 regsInCommon (operand * op1, operand * op2)
690 /* if they have registers in common */
691 if (!IS_SYMOP (op1) || !IS_SYMOP (op2))
694 sym1 = OP_SYMBOL (op1);
695 sym2 = OP_SYMBOL (op2);
697 if (sym1->nRegs == 0 || sym2->nRegs == 0)
700 for (i = 0; i < sym1->nRegs; i++)
706 for (j = 0; j < sym2->nRegs; j++)
711 if (sym2->regs[j] == sym1->regs[i])
719 /*-----------------------------------------------------------------*/
720 /* operandsEqu - equivalent */
721 /*-----------------------------------------------------------------*/
723 operandsEqu (operand * op1, operand * op2)
727 /* if they not symbols */
728 if (!IS_SYMOP (op1) || !IS_SYMOP (op2))
731 sym1 = OP_SYMBOL (op1);
732 sym2 = OP_SYMBOL (op2);
734 /* if both are itemps & one is spilt
735 and the other is not then false */
736 if (IS_ITEMP (op1) && IS_ITEMP (op2) &&
737 sym1->isspilt != sym2->isspilt)
740 /* if they are the same */
744 if (strcmp (sym1->rname, sym2->rname) == 0)
748 /* if left is a tmp & right is not */
749 if (IS_ITEMP (op1) &&
752 (sym1->usl.spillLoc == sym2))
755 if (IS_ITEMP (op2) &&
759 (sym2->usl.spillLoc == sym1))
765 /*-----------------------------------------------------------------*/
766 /* sameRegs - two asmops have the same registers */
767 /*-----------------------------------------------------------------*/
769 sameRegs (asmop * aop1, asmop * aop2)
775 if (aop1->type == AOP_DPTR || aop1->type == AOP_DPTR2)
782 if (aop1->type != AOP_REG ||
783 aop2->type != AOP_REG)
786 if (aop1->size != aop2->size)
789 for (i = 0; i < aop1->size; i++)
790 if (aop1->aopu.aop_reg[i] !=
791 aop2->aopu.aop_reg[i])
797 /*-----------------------------------------------------------------*/
798 /* aopOp - allocates an asmop for an operand : */
799 /*-----------------------------------------------------------------*/
801 aopOp (operand * op, iCode * ic, bool result, bool useDP2)
810 /* if this a literal */
811 if (IS_OP_LITERAL (op))
813 op->aop = aop = newAsmop (AOP_LIT);
814 aop->aopu.aop_lit = op->operand.valOperand;
815 aop->size = getSize (operandType (op));
819 /* if already has a asmop then continue */
823 /* if the underlying symbol has a aop */
824 if (IS_SYMOP (op) && OP_SYMBOL (op)->aop)
826 op->aop = OP_SYMBOL (op)->aop;
830 /* if this is a true symbol */
831 if (IS_TRUE_SYMOP (op))
833 op->aop = aopForSym (ic, OP_SYMBOL (op), result, useDP2);
837 /* this is a temporary : this has
843 e) can be a return use only */
845 sym = OP_SYMBOL (op);
848 /* if the type is a conditional */
849 if (sym->regType == REG_CND)
851 aop = op->aop = sym->aop = newAsmop (AOP_CRY);
856 /* if it is spilt then two situations
858 b) has a spill location */
859 if (sym->isspilt || sym->nRegs == 0)
862 /* rematerialize it NOW */
865 sym->aop = op->aop = aop =
867 aop->size = getSize (sym->type);
874 aop = op->aop = sym->aop = newAsmop (AOP_ACC);
875 aop->size = getSize (sym->type);
876 for (i = 0; i < 2; i++)
877 aop->aopu.aop_str[i] = accUse[i];
887 /* a AOP_STR uses DPTR, but DPTR is already in use;
890 werror(E_INTERNAL_ERROR,__FILE__,__LINE__,"AOP_STR with DPTR in use!");
893 aop = op->aop = sym->aop = newAsmop (AOP_STR);
894 aop->size = getSize (sym->type);
895 for (i = 0; i < (int) fReturnSizeDS390; i++)
896 aop->aopu.aop_str[i] = fReturn[i];
900 if (sym->dptr) { /* has been allocated to a DPTRn */
901 aop = op->aop = sym->aop = newAsmop (AOP_DPTRn);
902 aop->size = getSize (sym->type);
903 aop->aopu.dptr = sym->dptr;
906 /* else spill location */
907 if (sym->usl.spillLoc && getSize(sym->type) != getSize(sym->usl.spillLoc->type)) {
908 /* force a new aop if sizes differ */
909 sym->usl.spillLoc->aop = NULL;
911 sym->aop = op->aop = aop =
912 aopForSym (ic, sym->usl.spillLoc, result, useDP2);
913 aop->size = getSize (sym->type);
917 /* must be in a register */
918 sym->aop = op->aop = aop = newAsmop (AOP_REG);
919 aop->size = sym->nRegs;
920 for (i = 0; i < sym->nRegs; i++)
921 aop->aopu.aop_reg[i] = sym->regs[i];
924 /*-----------------------------------------------------------------*/
925 /* freeAsmop - free up the asmop given to an operand */
926 /*----------------------------------------------------------------*/
928 freeAsmop (operand * op, asmop * aaop, iCode * ic, bool pop)
945 /* depending on the asmop type only three cases need work AOP_RO
946 , AOP_R1 && AOP_STK */
954 emitcode ("pop", "ar0");
958 bitVectUnSetBit (ic->rUsed, R0_IDX);
966 emitcode ("pop", "ar1");
970 bitVectUnSetBit (ic->rUsed, R1_IDX);
976 int stk = aop->aopu.aop_stk + aop->size;
977 bitVectUnSetBit (ic->rUsed, R0_IDX);
978 bitVectUnSetBit (ic->rUsed, R1_IDX);
980 getFreePtr (ic, &aop, FALSE);
982 if (options.stack10bit)
984 /* I'm not sure what to do here yet... */
987 "*** Warning: probably generating bad code for "
988 "10 bit stack mode.\n");
993 emitcode ("mov", "a,_bp");
994 emitcode ("add", "a,#!constbyte", ((char) stk) & 0xff);
995 emitcode ("mov", "%s,a", aop->aopu.aop_ptr->name);
999 emitcode ("mov", "%s,_bp", aop->aopu.aop_ptr->name);
1004 emitcode ("pop", "acc");
1005 emitcode ("mov", "@%s,a", aop->aopu.aop_ptr->name);
1008 emitcode ("dec", "%s", aop->aopu.aop_ptr->name);
1011 freeAsmop (op, NULL, ic, TRUE);
1014 emitcode ("pop", "ar0");
1020 emitcode ("pop", "ar1");
1025 if (_G.dptr1InUse) {
1026 emitcode ("pop","dpx1");
1027 emitcode ("pop","dph1");
1028 emitcode ("pop","dpl1");
1033 emitcode ("pop","dpx");
1034 emitcode ("pop","dph");
1035 emitcode ("pop","dpl");
1040 /* all other cases just dealloc */
1046 OP_SYMBOL (op)->aop = NULL;
1047 /* if the symbol has a spill */
1049 SPIL_LOC (op)->aop = NULL;
1054 /*------------------------------------------------------------------*/
1055 /* aopGet - for fetching value of the aop */
1057 /* Set canClobberACC if you are sure it is OK to clobber the value */
1058 /* in the accumulator. Set it FALSE otherwise; FALSE is always safe, */
1059 /* just less efficient. */
1060 /*------------------------------------------------------------------*/
1063 aopGet (asmop * aop,
1072 /* offset is greater than
1074 if (offset > (aop->size - 1) &&
1075 aop->type != AOP_LIT)
1078 /* depending on type */
1084 /* if we need to increment it */
1085 while (offset > aop->coff)
1087 emitcode ("inc", "%s", aop->aopu.aop_ptr->name);
1091 while (offset < aop->coff)
1093 emitcode ("dec", "%s", aop->aopu.aop_ptr->name);
1100 emitcode ("movx", "a,@%s", aop->aopu.aop_ptr->name);
1101 return (dname ? "acc" : "a");
1103 sprintf (s, "@%s", aop->aopu.aop_ptr->name);
1104 rs = Safe_calloc (1, strlen (s) + 1);
1109 assert(offset <= 3);
1110 return dptrn[aop->aopu.dptr][offset];
1115 if (aop->type == AOP_DPTR2)
1121 emitcode ("xch", "a, %s", DP2_RESULT_REG);
1127 while (offset > aop->coff)
1129 emitcode ("inc", "dptr");
1133 while (offset < aop->coff)
1135 emitcode ("lcall", "__decdptr");
1142 emitcode ("clr", "a");
1143 emitcode ("movc", "a,@a+dptr");
1147 emitcode ("movx", "a,@dptr");
1150 if (aop->type == AOP_DPTR2)
1156 emitcode ("xch", "a, %s", DP2_RESULT_REG);
1157 return DP2_RESULT_REG;
1160 return (dname ? "acc" : "a");
1163 if (aop->aopu.aop_immd.from_cast_remat && (offset == (aop->size-1))) {
1164 sprintf(s,"%s",aop->aopu.aop_immd.aop_immd2);
1166 sprintf (s, "#%s", aop->aopu.aop_immd.aop_immd1);
1170 tsprintf(s,"#!his",aop->aopu.aop_immd.aop_immd1);
1173 tsprintf(s,"#!hihis",aop->aopu.aop_immd.aop_immd1);
1176 tsprintf(s,"#!hihihis",aop->aopu.aop_immd.aop_immd1);
1178 default: /* should not need this (just in case) */
1179 sprintf (s, "#(%s >> %d)",
1180 aop->aopu.aop_immd.aop_immd1,
1186 aop->aopu.aop_immd.aop_immd1);
1187 rs = Safe_calloc (1, strlen (s) + 1);
1193 sprintf (s, "(%s + %d)",
1197 sprintf (s, "%s", aop->aopu.aop_dir);
1198 rs = Safe_calloc (1, strlen (s) + 1);
1204 return aop->aopu.aop_reg[offset]->dname;
1206 return aop->aopu.aop_reg[offset]->name;
1209 emitcode ("clr", "a");
1210 emitcode ("mov", "c,%s", aop->aopu.aop_dir);
1211 emitcode ("rlc", "a");
1212 return (dname ? "acc" : "a");
1215 if (!offset && dname)
1217 return aop->aopu.aop_str[offset];
1220 return aopLiteral (aop->aopu.aop_lit, offset);
1224 if (strcmp (aop->aopu.aop_str[offset], "a") == 0 &&
1228 return aop->aopu.aop_str[offset];
1232 werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
1233 "aopget got unsupported aop->type");
1236 /*-----------------------------------------------------------------*/
1237 /* aopPut - puts a string for a aop */
1238 /*-----------------------------------------------------------------*/
1240 aopPut (asmop * aop, char *s, int offset)
1244 if (aop->size && offset > (aop->size - 1))
1246 werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
1247 "aopPut got offset > aop->size");
1251 /* will assign value to value */
1252 /* depending on where it is ofcourse */
1257 sprintf (d, "(%s + %d)",
1258 aop->aopu.aop_dir, offset);
1260 sprintf (d, "%s", aop->aopu.aop_dir);
1263 emitcode ("mov", "%s,%s", d, s);
1268 if (strcmp (aop->aopu.aop_reg[offset]->name, s) != 0 &&
1269 strcmp (aop->aopu.aop_reg[offset]->dname, s) != 0)
1272 strcmp (s, "r0") == 0 ||
1273 strcmp (s, "r1") == 0 ||
1274 strcmp (s, "r2") == 0 ||
1275 strcmp (s, "r3") == 0 ||
1276 strcmp (s, "r4") == 0 ||
1277 strcmp (s, "r5") == 0 ||
1278 strcmp (s, "r6") == 0 ||
1279 strcmp (s, "r7") == 0)
1280 emitcode ("mov", "%s,%s",
1281 aop->aopu.aop_reg[offset]->dname, s);
1283 emitcode ("mov", "%s,%s",
1284 aop->aopu.aop_reg[offset]->name, s);
1289 emitcode ("mov","%s,%s",dptrn[aop->aopu.dptr][offset],s);
1295 if (aop->type == AOP_DPTR2)
1303 werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
1304 "aopPut writting to code space");
1308 while (offset > aop->coff)
1311 emitcode ("inc", "dptr");
1314 while (offset < aop->coff)
1317 emitcode ("lcall", "__decdptr");
1322 /* if not in accumulater */
1325 emitcode ("movx", "@dptr,a");
1327 if (aop->type == AOP_DPTR2)
1335 while (offset > aop->coff)
1338 emitcode ("inc", "%s", aop->aopu.aop_ptr->name);
1340 while (offset < aop->coff)
1343 emitcode ("dec", "%s", aop->aopu.aop_ptr->name);
1350 emitcode ("movx", "@%s,a", aop->aopu.aop_ptr->name);
1356 emitcode ("mov", "@%s,a", aop->aopu.aop_ptr->name);
1358 else if (strcmp (s, "r0") == 0 ||
1359 strcmp (s, "r1") == 0 ||
1360 strcmp (s, "r2") == 0 ||
1361 strcmp (s, "r3") == 0 ||
1362 strcmp (s, "r4") == 0 ||
1363 strcmp (s, "r5") == 0 ||
1364 strcmp (s, "r6") == 0 ||
1365 strcmp (s, "r7") == 0)
1368 sprintf (buffer, "a%s", s);
1369 emitcode ("mov", "@%s,%s",
1370 aop->aopu.aop_ptr->name, buffer);
1373 emitcode ("mov", "@%s,%s", aop->aopu.aop_ptr->name, s);
1378 if (strcmp (s, "a") == 0)
1379 emitcode ("push", "acc");
1383 emitcode ("push", "acc");
1385 emitcode ("push", s);
1391 /* if bit variable */
1392 if (!aop->aopu.aop_dir)
1394 emitcode ("clr", "a");
1395 emitcode ("rlc", "a");
1400 emitcode ("clr", "%s", aop->aopu.aop_dir);
1402 emitcode ("setb", "%s", aop->aopu.aop_dir);
1403 else if (!strcmp (s, "c"))
1404 emitcode ("mov", "%s,c", aop->aopu.aop_dir);
1407 if (strcmp (s, "a"))
1412 /* set C, if a >= 1 */
1413 emitcode ("add", "a,#!constbyte",0xff);
1414 emitcode ("mov", "%s,c", aop->aopu.aop_dir);
1422 if (strcmp (aop->aopu.aop_str[offset], s))
1423 emitcode ("mov", "%s,%s", aop->aopu.aop_str[offset], s);
1428 if (!offset && (strcmp (s, "acc") == 0))
1431 if (strcmp (aop->aopu.aop_str[offset], s))
1432 emitcode ("mov", "%s,%s", aop->aopu.aop_str[offset], s);
1436 werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
1437 "aopPut got unsupported aop->type");
1444 /*--------------------------------------------------------------------*/
1445 /* reAdjustPreg - points a register back to where it should (coff==0) */
1446 /*--------------------------------------------------------------------*/
1448 reAdjustPreg (asmop * aop)
1450 if ((aop->coff==0) || (aop->size <= 1)) {
1459 emitcode ("dec", "%s", aop->aopu.aop_ptr->name);
1463 if (aop->type == AOP_DPTR2)
1470 emitcode ("lcall", "__decdptr");
1473 if (aop->type == AOP_DPTR2)
1483 #define AOP(op) op->aop
1484 #define AOP_TYPE(op) AOP(op)->type
1485 #define AOP_SIZE(op) AOP(op)->size
1486 #define IS_AOP_PREG(x) (AOP(x) && (AOP_TYPE(x) == AOP_R1 || \
1487 AOP_TYPE(x) == AOP_R0))
1489 #define AOP_NEEDSACC(x) (AOP(x) && (AOP_TYPE(x) == AOP_CRY || \
1490 AOP_TYPE(x) == AOP_DPTR || AOP_TYPE(x) == AOP_DPTR2 || \
1493 #define AOP_INPREG(x) (x && (x->type == AOP_REG && \
1494 (x->aopu.aop_reg[0] == ds390_regWithIdx(R0_IDX) || \
1495 x->aopu.aop_reg[0] == ds390_regWithIdx(R1_IDX) )))
1496 #define AOP_INDPTRn(x) (AOP_TYPE(x) == AOP_DPTRn)
1497 #define AOP_USESDPTR(x) (AOP_TYPE(x) == AOP_DPTR || AOP_TYPE(x) == AOP_STR)
1499 /* Workaround for DS80C390 bug: div ab may return bogus results
1500 * if A is accessed in instruction immediately before the div.
1502 * Will be fixed in B4 rev of processor, Dallas claims.
1505 #define LOAD_AB_FOR_DIV(LEFT, RIGHT, L) \
1506 if (!AOP_NEEDSACC(RIGHT)) \
1508 /* We can load A first, then B, since \
1509 * B (the RIGHT operand) won't clobber A, \
1510 * thus avoiding touching A right before the div. \
1512 D(emitcode(";", "DS80C390 div bug: rearranged ops.");); \
1513 L = aopGet(AOP(LEFT),0,FALSE,FALSE,TRUE); \
1515 emitcode("mov","b,%s",aopGet(AOP(RIGHT),0,FALSE,FALSE,FALSE));\
1519 /* Just stuff in a nop after loading A. */ \
1520 emitcode("mov","b,%s",aopGet(AOP(RIGHT),0,FALSE,FALSE,FALSE));\
1521 L = aopGet(AOP(LEFT),0,FALSE,FALSE,TRUE); \
1523 emitcode("nop", "; workaround for DS80C390 div bug."); \
1526 /*-----------------------------------------------------------------*/
1527 /* genNotFloat - generates not for float operations */
1528 /*-----------------------------------------------------------------*/
1530 genNotFloat (operand * op, operand * res)
1536 D (emitcode (";", "genNotFloat ");
1539 /* we will put 127 in the first byte of
1541 aopPut (AOP (res), "#127", 0);
1542 size = AOP_SIZE (op) - 1;
1545 _startLazyDPSEvaluation ();
1546 l = aopGet (op->aop, offset++, FALSE, FALSE, TRUE);
1551 emitcode ("orl", "a,%s",
1553 offset++, FALSE, FALSE, FALSE));
1555 _endLazyDPSEvaluation ();
1557 tlbl = newiTempLabel (NULL);
1558 aopPut (res->aop, one, 1);
1559 emitcode ("jz", "!tlabel", (tlbl->key + 100));
1560 aopPut (res->aop, zero, 1);
1561 emitcode ("", "!tlabeldef", (tlbl->key + 100));
1563 size = res->aop->size - 2;
1565 /* put zeros in the rest */
1567 aopPut (res->aop, zero, offset++);
1570 /*-----------------------------------------------------------------*/
1571 /* opIsGptr: returns non-zero if the passed operand is */
1572 /* a generic pointer type. */
1573 /*-----------------------------------------------------------------*/
1575 opIsGptr (operand * op)
1577 sym_link *type = operandType (op);
1579 if ((AOP_SIZE (op) == GPTRSIZE) && IS_GENPTR (type))
1586 /*-----------------------------------------------------------------*/
1587 /* getDataSize - get the operand data size */
1588 /*-----------------------------------------------------------------*/
1590 getDataSize (operand * op)
1593 size = AOP_SIZE (op);
1594 if (size == GPTRSIZE)
1596 sym_link *type = operandType (op);
1597 if (IS_GENPTR (type))
1599 /* generic pointer; arithmetic operations
1600 * should ignore the high byte (pointer type).
1608 /*-----------------------------------------------------------------*/
1609 /* outAcc - output Acc */
1610 /*-----------------------------------------------------------------*/
1612 outAcc (operand * result)
1615 size = getDataSize (result);
1618 aopPut (AOP (result), "a", 0);
1621 /* unsigned or positive */
1624 aopPut (AOP (result), zero, offset++);
1629 /*-----------------------------------------------------------------*/
1630 /* outBitC - output a bit C */
1631 /*-----------------------------------------------------------------*/
1633 outBitC (operand * result)
1635 /* if the result is bit */
1636 if (AOP_TYPE (result) == AOP_CRY)
1638 aopPut (AOP (result), "c", 0);
1642 emitcode ("clr", "a");
1643 emitcode ("rlc", "a");
1648 /*-----------------------------------------------------------------*/
1649 /* toBoolean - emit code for orl a,operator(sizeop) */
1650 /*-----------------------------------------------------------------*/
1652 toBoolean (operand * oper)
1654 int size = AOP_SIZE (oper) - 1;
1658 /* The generic part of a generic pointer should
1659 * not participate in it's truth value.
1661 * i.e. 0x10000000 is zero.
1663 if (opIsGptr (oper))
1665 D (emitcode (";", "toBoolean: generic ptr special case.");
1670 _startLazyDPSEvaluation ();
1671 if (AOP_NEEDSACC (oper) && size)
1674 emitcode ("push", "b");
1675 emitcode ("mov", "b, %s", aopGet (AOP (oper), 0, FALSE, FALSE, FALSE));
1679 MOVA (aopGet (AOP (oper), 0, FALSE, FALSE, TRUE));
1685 emitcode ("orl", "b,%s", aopGet (AOP (oper), offset++, FALSE, FALSE, FALSE));
1689 emitcode ("orl", "a,%s", aopGet (AOP (oper), offset++, FALSE, FALSE, FALSE));
1692 _endLazyDPSEvaluation ();
1696 emitcode ("mov", "a,b");
1697 emitcode ("pop", "b");
1702 /*-----------------------------------------------------------------*/
1703 /* genNot - generate code for ! operation */
1704 /*-----------------------------------------------------------------*/
1709 sym_link *optype = operandType (IC_LEFT (ic));
1711 D (emitcode (";", "genNot ");
1714 /* assign asmOps to operand & result */
1715 aopOp (IC_LEFT (ic), ic, FALSE, FALSE);
1716 aopOp (IC_RESULT (ic), ic, TRUE, AOP_TYPE (IC_LEFT (ic)) == AOP_DPTR);
1718 /* if in bit space then a special case */
1719 if (AOP_TYPE (IC_LEFT (ic)) == AOP_CRY)
1721 emitcode ("mov", "c,%s", IC_LEFT (ic)->aop->aopu.aop_dir);
1722 emitcode ("cpl", "c");
1723 outBitC (IC_RESULT (ic));
1727 /* if type float then do float */
1728 if (IS_FLOAT (optype))
1730 genNotFloat (IC_LEFT (ic), IC_RESULT (ic));
1734 toBoolean (IC_LEFT (ic));
1736 tlbl = newiTempLabel (NULL);
1737 emitcode ("cjne", "a,#1,!tlabel", tlbl->key + 100);
1738 emitcode ("", "!tlabeldef", tlbl->key + 100);
1739 outBitC (IC_RESULT (ic));
1742 /* release the aops */
1743 freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? 0 : 1));
1744 freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
1748 /*-----------------------------------------------------------------*/
1749 /* genCpl - generate code for complement */
1750 /*-----------------------------------------------------------------*/
1758 D (emitcode (";", "genCpl ");
1762 /* assign asmOps to operand & result */
1763 aopOp (IC_LEFT (ic), ic, FALSE, FALSE);
1764 aopOp (IC_RESULT (ic), ic, TRUE, AOP_TYPE (IC_LEFT (ic)) == AOP_DPTR);
1766 /* special case if in bit space */
1767 if (AOP_TYPE (IC_RESULT (ic)) == AOP_CRY) {
1768 if (AOP_TYPE (IC_LEFT (ic)) == AOP_CRY) {
1769 emitcode ("mov", "c,%s", IC_LEFT (ic)->aop->aopu.aop_dir);
1770 emitcode ("cpl", "c");
1771 emitcode ("mov", "%s,c", IC_RESULT (ic)->aop->aopu.aop_dir);
1774 tlbl=newiTempLabel(NULL);
1775 emitcode ("cjne", "%s,#0x01,%05d$",
1776 aopGet(AOP(IC_LEFT(ic)), 0, FALSE,FALSE,TRUE), tlbl->key+100);
1777 emitcode ("", "%05d$:", tlbl->key+100);
1778 outBitC (IC_RESULT(ic));
1782 size = AOP_SIZE (IC_RESULT (ic));
1783 _startLazyDPSEvaluation ();
1786 char *l = aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE, TRUE);
1788 emitcode ("cpl", "a");
1789 aopPut (AOP (IC_RESULT (ic)), "a", offset++);
1791 _endLazyDPSEvaluation ();
1795 /* release the aops */
1796 freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? 0 : 1));
1797 freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
1800 /*-----------------------------------------------------------------*/
1801 /* genUminusFloat - unary minus for floating points */
1802 /*-----------------------------------------------------------------*/
1804 genUminusFloat (operand * op, operand * result)
1806 int size, offset = 0;
1808 /* for this we just need to flip the
1809 first it then copy the rest in place */
1810 D (emitcode (";", "genUminusFloat");
1813 _startLazyDPSEvaluation ();
1814 size = AOP_SIZE (op) - 1;
1815 l = aopGet (AOP (op), 3, FALSE, FALSE, TRUE);
1818 emitcode ("cpl", "acc.7");
1819 aopPut (AOP (result), "a", 3);
1823 aopPut (AOP (result),
1824 aopGet (AOP (op), offset, FALSE, FALSE, FALSE),
1828 _endLazyDPSEvaluation ();
1831 /*-----------------------------------------------------------------*/
1832 /* genUminus - unary minus code generation */
1833 /*-----------------------------------------------------------------*/
1835 genUminus (iCode * ic)
1838 sym_link *optype, *rtype;
1840 D (emitcode (";", "genUminus ");
1845 aopOp (IC_LEFT (ic), ic, FALSE, FALSE);
1846 aopOp (IC_RESULT (ic), ic, TRUE, AOP_TYPE (IC_LEFT (ic)) == AOP_DPTR);
1848 /* if both in bit space then special
1850 if (AOP_TYPE (IC_RESULT (ic)) == AOP_CRY &&
1851 AOP_TYPE (IC_LEFT (ic)) == AOP_CRY)
1854 emitcode ("mov", "c,%s", IC_LEFT (ic)->aop->aopu.aop_dir);
1855 emitcode ("cpl", "c");
1856 emitcode ("mov", "%s,c", IC_RESULT (ic)->aop->aopu.aop_dir);
1860 optype = operandType (IC_LEFT (ic));
1861 rtype = operandType (IC_RESULT (ic));
1863 /* if float then do float stuff */
1864 if (IS_FLOAT (optype))
1866 genUminusFloat (IC_LEFT (ic), IC_RESULT (ic));
1870 /* otherwise subtract from zero */
1871 size = AOP_SIZE (IC_LEFT (ic));
1873 _startLazyDPSEvaluation ();
1876 char *l = aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE, TRUE);
1877 if (!strcmp (l, "a"))
1881 emitcode ("cpl", "a");
1882 emitcode ("addc", "a,#0");
1888 emitcode ("clr", "a");
1889 emitcode ("subb", "a,%s", l);
1891 aopPut (AOP (IC_RESULT (ic)), "a", offset++);
1893 _endLazyDPSEvaluation ();
1895 /* if any remaining bytes in the result */
1896 /* we just need to propagate the sign */
1897 if ((size = (AOP_SIZE (IC_RESULT (ic)) - AOP_SIZE (IC_LEFT (ic)))))
1899 emitcode ("rlc", "a");
1900 emitcode ("subb", "a,acc");
1902 aopPut (AOP (IC_RESULT (ic)), "a", offset++);
1906 /* release the aops */
1907 freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? 0 : 1));
1908 freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
1911 /*-----------------------------------------------------------------*/
1912 /* savermask - saves registers in the mask */
1913 /*-----------------------------------------------------------------*/
1914 static void savermask(bitVect *rs_mask)
1917 if (options.useXstack) {
1918 if (bitVectBitValue (rs_mask, R0_IDX))
1919 emitcode ("mov", "b,r0");
1920 emitcode ("mov", "r0,%s", spname);
1921 for (i = 0; i < ds390_nRegs; i++) {
1922 if (bitVectBitValue (rs_mask, i)) {
1924 emitcode ("mov", "a,b");
1926 emitcode ("mov", "a,%s", ds390_regWithIdx (i)->name);
1927 emitcode ("movx", "@r0,a");
1928 emitcode ("inc", "r0");
1931 emitcode ("mov", "%s,r0", spname);
1932 if (bitVectBitValue (rs_mask, R0_IDX))
1933 emitcode ("mov", "r0,b");
1935 for (i = 0; i < ds390_nRegs; i++) {
1936 if (bitVectBitValue (rs_mask, i))
1937 emitcode ("push", "%s", ds390_regWithIdx (i)->dname);
1942 /*-----------------------------------------------------------------*/
1943 /* saveRegisters - will look for a call and save the registers */
1944 /*-----------------------------------------------------------------*/
1946 saveRegisters (iCode * lic)
1952 for (ic = lic; ic; ic = ic->next)
1953 if (ic->op == CALL || ic->op == PCALL)
1958 fprintf (stderr, "found parameter push with no function call\n");
1962 /* if the registers have been saved already then
1964 if (ic->regsSaved || IFFUNC_ISNAKED(OP_SYM_TYPE(IC_LEFT(ic)))) return ;
1966 /* special case if DPTR alive across a function call then must save it
1967 even though callee saves */
1968 if (IFFUNC_CALLEESAVES(OP_SYMBOL (IC_LEFT (ic))->type)) {
1970 rsave = newBitVect(ic->rMask->size);
1971 for (i = DPL_IDX ; i <= B_IDX ; i++ ) {
1972 if (bitVectBitValue(ic->rMask,i))
1973 rsave = bitVectSetBit(rsave,i);
1975 rsave = bitVectCplAnd(rsave,ds390_rUmaskForOp (IC_RESULT(ic)));
1977 /* safe the registers in use at this time but skip the
1978 ones for the result */
1979 rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
1980 ds390_rUmaskForOp (IC_RESULT(ic)));
1986 /*-----------------------------------------------------------------*/
1987 /* usavermask - restore registers with mask */
1988 /*-----------------------------------------------------------------*/
1989 static void unsavermask(bitVect *rs_mask)
1992 if (options.useXstack) {
1993 emitcode ("mov", "r0,%s", spname);
1994 for (i = ds390_nRegs; i >= 0; i--) {
1995 if (bitVectBitValue (rs_mask, i)) {
1996 emitcode ("dec", "r0");
1997 emitcode ("movx", "a,@r0");
1999 emitcode ("mov", "b,a");
2001 emitcode ("mov", "%s,a", ds390_regWithIdx (i)->name);
2004 emitcode ("mov", "%s,r0", spname);
2005 if (bitVectBitValue (rs_mask, R0_IDX))
2006 emitcode ("mov", "r0,b");
2008 for (i = ds390_nRegs; i >= 0; i--) {
2009 if (bitVectBitValue (rs_mask, i))
2010 emitcode ("pop", "%s", ds390_regWithIdx (i)->dname);
2015 /*-----------------------------------------------------------------*/
2016 /* unsaveRegisters - pop the pushed registers */
2017 /*-----------------------------------------------------------------*/
2019 unsaveRegisters (iCode * ic)
2023 if (IFFUNC_CALLEESAVES(OP_SYMBOL (IC_LEFT (ic))->type)) {
2025 rsave = newBitVect(ic->rMask->size);
2026 for (i = DPL_IDX ; i <= B_IDX ; i++ ) {
2027 if (bitVectBitValue(ic->rMask,i))
2028 rsave = bitVectSetBit(rsave,i);
2030 rsave = bitVectCplAnd(rsave,ds390_rUmaskForOp (IC_RESULT(ic)));
2032 /* restore the registers in use at this time but skip the
2033 ones for the result */
2034 rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
2035 ds390_rUmaskForOp (IC_RESULT(ic)));
2041 /*-----------------------------------------------------------------*/
2043 /*-----------------------------------------------------------------*/
2045 pushSide (operand * oper, int size)
2048 _startLazyDPSEvaluation ();
2051 char *l = aopGet (AOP (oper), offset++, FALSE, TRUE, FALSE);
2052 if (AOP_TYPE (oper) != AOP_REG &&
2053 AOP_TYPE (oper) != AOP_DIR &&
2056 emitcode ("mov", "a,%s", l);
2057 emitcode ("push", "acc");
2060 emitcode ("push", "%s", l);
2062 _endLazyDPSEvaluation ();
2065 /*-----------------------------------------------------------------*/
2066 /* assignResultValue - */
2067 /*-----------------------------------------------------------------*/
2069 assignResultValue (operand * oper)
2072 int size = AOP_SIZE (oper);
2074 _startLazyDPSEvaluation ();
2077 aopPut (AOP (oper), fReturn[offset], offset);
2080 _endLazyDPSEvaluation ();
2084 /*-----------------------------------------------------------------*/
2085 /* genXpush - pushes onto the external stack */
2086 /*-----------------------------------------------------------------*/
2088 genXpush (iCode * ic)
2090 asmop *aop = newAsmop (0);
2092 int size, offset = 0;
2094 D (emitcode (";", "genXpush ");
2097 aopOp (IC_LEFT (ic), ic, FALSE, FALSE);
2098 r = getFreePtr (ic, &aop, FALSE);
2101 emitcode ("mov", "%s,_spx", r->name);
2103 size = AOP_SIZE (IC_LEFT (ic));
2104 _startLazyDPSEvaluation ();
2108 char *l = aopGet (AOP (IC_LEFT (ic)),
2109 offset++, FALSE, FALSE, TRUE);
2111 emitcode ("movx", "@%s,a", r->name);
2112 emitcode ("inc", "%s", r->name);
2115 _endLazyDPSEvaluation ();
2118 emitcode ("mov", "_spx,%s", r->name);
2120 freeAsmop (NULL, aop, ic, TRUE);
2121 freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
2124 /*-----------------------------------------------------------------*/
2125 /* genIpush - genrate code for pushing this gets a little complex */
2126 /*-----------------------------------------------------------------*/
2128 genIpush (iCode * ic)
2130 int size, offset = 0;
2133 D (emitcode (";", "genIpush ");
2136 /* if this is not a parm push : ie. it is spill push
2137 and spill push is always done on the local stack */
2141 /* and the item is spilt then do nothing */
2142 if (OP_SYMBOL (IC_LEFT (ic))->isspilt || OP_SYMBOL(IC_LEFT(ic))->dptr)
2145 aopOp (IC_LEFT (ic), ic, FALSE, FALSE);
2146 size = AOP_SIZE (IC_LEFT (ic));
2147 /* push it on the stack */
2148 _startLazyDPSEvaluation ();
2151 l = aopGet (AOP (IC_LEFT (ic)), offset++, FALSE, TRUE, TRUE);
2157 emitcode ("push", "%s", l);
2159 _endLazyDPSEvaluation ();
2163 /* this is a paramter push: in this case we call
2164 the routine to find the call and save those
2165 registers that need to be saved */
2168 /* if use external stack then call the external
2169 stack pushing routine */
2170 if (options.useXstack)
2176 /* then do the push */
2177 aopOp (IC_LEFT (ic), ic, FALSE, FALSE);
2179 // pushSide(IC_LEFT(ic), AOP_SIZE(IC_LEFT(ic)));
2180 size = AOP_SIZE (IC_LEFT (ic));
2182 _startLazyDPSEvaluation ();
2185 l = aopGet (AOP (IC_LEFT (ic)), offset++, FALSE, TRUE, FALSE);
2186 if (AOP_TYPE (IC_LEFT (ic)) != AOP_REG &&
2187 AOP_TYPE (IC_LEFT (ic)) != AOP_DIR &&
2190 emitcode ("mov", "a,%s", l);
2191 emitcode ("push", "acc");
2194 emitcode ("push", "%s", l);
2196 _endLazyDPSEvaluation ();
2198 freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
2201 /*-----------------------------------------------------------------*/
2202 /* genIpop - recover the registers: can happen only for spilling */
2203 /*-----------------------------------------------------------------*/
2205 genIpop (iCode * ic)
2209 D (emitcode (";", "genIpop ");
2213 /* if the temp was not pushed then */
2214 if (OP_SYMBOL (IC_LEFT (ic))->isspilt || OP_SYMBOL (IC_LEFT (ic))->dptr)
2217 aopOp (IC_LEFT (ic), ic, FALSE, FALSE);
2218 size = AOP_SIZE (IC_LEFT (ic));
2219 offset = (size - 1);
2220 _startLazyDPSEvaluation ();
2223 emitcode ("pop", "%s", aopGet (AOP (IC_LEFT (ic)), offset--,
2224 FALSE, TRUE, TRUE));
2226 _endLazyDPSEvaluation ();
2228 freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
2231 /*-----------------------------------------------------------------*/
2232 /* unsaveRBank - restores the resgister bank from stack */
2233 /*-----------------------------------------------------------------*/
2235 unsaveRBank (int bank, iCode * ic, bool popPsw)
2241 if (options.useXstack)
2245 /* Assume r0 is available for use. */
2246 r = ds390_regWithIdx (R0_IDX);;
2251 r = getFreePtr (ic, &aop, FALSE);
2253 emitcode ("mov", "%s,_spx", r->name);
2258 if (options.useXstack)
2260 emitcode ("movx", "a,@%s", r->name);
2261 emitcode ("mov", "psw,a");
2262 emitcode ("dec", "%s", r->name);
2266 emitcode ("pop", "psw");
2270 for (i = 7; i >= 0; i--) /* only R7-R0 needs to be popped */
2272 if (options.useXstack)
2274 emitcode ("movx", "a,@%s", r->name);
2275 emitcode ("mov", "(%s+%d),a",
2276 regs390[i].base, 8 * bank + regs390[i].offset);
2277 emitcode ("dec", "%s", r->name);
2281 emitcode ("pop", "(%s+%d)",
2282 regs390[i].base, 8 * bank + regs390[i].offset);
2285 if (options.useXstack)
2287 emitcode ("mov", "_spx,%s", r->name);
2292 freeAsmop (NULL, aop, ic, TRUE);
2296 /*-----------------------------------------------------------------*/
2297 /* saveRBank - saves an entire register bank on the stack */
2298 /*-----------------------------------------------------------------*/
2300 saveRBank (int bank, iCode * ic, bool pushPsw)
2306 if (options.useXstack)
2310 /* Assume r0 is available for use. */
2311 r = ds390_regWithIdx (R0_IDX);;
2316 r = getFreePtr (ic, &aop, FALSE);
2318 emitcode ("mov", "%s,_spx", r->name);
2321 for (i = 0; i < 8 ; i++) /* only R0-R7 needs saving */
2323 if (options.useXstack)
2325 emitcode ("inc", "%s", r->name);
2326 emitcode ("mov", "a,(%s+%d)",
2327 regs390[i].base, 8 * bank + regs390[i].offset);
2328 emitcode ("movx", "@%s,a", r->name);
2331 emitcode ("push", "(%s+%d)",
2332 regs390[i].base, 8 * bank + regs390[i].offset);
2337 if (options.useXstack)
2339 emitcode ("mov", "a,psw");
2340 emitcode ("movx", "@%s,a", r->name);
2341 emitcode ("inc", "%s", r->name);
2342 emitcode ("mov", "_spx,%s", r->name);
2346 emitcode ("push", "psw");
2349 emitcode ("mov", "psw,#!constbyte", (bank << 3) & 0x00ff);
2354 freeAsmop (NULL, aop, ic, TRUE);
2363 /*-----------------------------------------------------------------*/
2364 /* genSend - gen code for SEND */
2365 /*-----------------------------------------------------------------*/
2366 static void genSend(set *sendSet)
2370 static int rb1_count = 0;
2372 for (sic = setFirstItem (sendSet); sic;
2373 sic = setNextItem (sendSet)) {
2374 int size, offset = 0;
2376 size=getSize(operandType(IC_LEFT(sic)));
2377 D (emitcode (";", "genSend argreg = %d, size = %d ",sic->argreg,size));
2378 if (sendCount == 0) { /* first parameter */
2379 // we know that dpl(hxb) is the result, so
2381 _startLazyDPSEvaluation ();
2383 aopOp (IC_LEFT (sic), sic, FALSE,
2384 (IS_SYMOP(IC_LEFT(sic)) && OP_SYMBOL(IC_LEFT(sic))->ruonly ? FALSE : TRUE));
2386 aopOp (IC_LEFT (sic), sic, FALSE, FALSE);
2389 char *l = aopGet (AOP (IC_LEFT (sic)), offset,
2390 FALSE, FALSE, TRUE);
2391 if (strcmp (l, fReturn[offset])) {
2392 emitcode ("mov", "%s,%s",
2398 _endLazyDPSEvaluation ();
2399 freeAsmop (IC_LEFT (sic), NULL, sic, TRUE);
2401 } else { /* if more parameter in registers */
2402 aopOp (IC_LEFT (sic), sic, FALSE, TRUE);
2404 emitcode ("mov","b1_%d,%s",rb1_count++,aopGet (AOP (IC_LEFT (sic)), offset++,
2405 FALSE, FALSE, TRUE));
2407 freeAsmop (IC_LEFT (sic), NULL, sic, TRUE);
2413 /*-----------------------------------------------------------------*/
2414 /* genCall - generates a call statement */
2415 /*-----------------------------------------------------------------*/
2417 genCall (iCode * ic)
2420 bool restoreBank = FALSE;
2421 bool swapBanks = FALSE;
2423 D (emitcode (";", "genCall "););
2425 /* if we are calling a not _naked function that is not using
2426 the same register bank then we need to save the
2427 destination registers on the stack */
2428 dtype = operandType (IC_LEFT (ic));
2429 if (currFunc && dtype && !IFFUNC_ISNAKED(dtype) &&
2430 (FUNC_REGBANK (currFunc->type) != FUNC_REGBANK (dtype)) &&
2431 IFFUNC_ISISR (currFunc->type))
2435 /* This is unexpected; the bank should have been saved in
2438 saveRBank (FUNC_REGBANK (dtype), ic, FALSE);
2444 /* if caller saves & we have not saved then */
2448 /* if send set is not empty the assign */
2449 /* We've saved all the registers we care about;
2450 * therefore, we may clobber any register not used
2451 * in the calling convention (i.e. anything not in
2456 if (IFFUNC_ISREENT(dtype)) { /* need to reverse the send set */
2457 genSend(reverseSet(_G.sendSet));
2459 genSend(_G.sendSet);
2466 emitcode ("mov", "psw,#!constbyte",
2467 ((FUNC_REGBANK(dtype)) << 3) & 0xff);
2471 emitcode ("lcall", "%s", (OP_SYMBOL (IC_LEFT (ic))->rname[0] ?
2472 OP_SYMBOL (IC_LEFT (ic))->rname :
2473 OP_SYMBOL (IC_LEFT (ic))->name));
2477 emitcode ("mov", "psw,#!constbyte",
2478 ((FUNC_REGBANK(currFunc->type)) << 3) & 0xff);
2481 /* if we need assign a result value */
2482 if ((IS_ITEMP (IC_RESULT (ic)) &&
2483 (OP_SYMBOL (IC_RESULT (ic))->nRegs ||
2484 OP_SYMBOL (IC_RESULT (ic))->accuse ||
2485 OP_SYMBOL (IC_RESULT (ic))->spildir)) ||
2486 IS_TRUE_SYMOP (IC_RESULT (ic)))
2488 if (isOperandInFarSpace (IC_RESULT (ic))
2489 && getSize (operandType (IC_RESULT (ic))) <= 2)
2491 int size = getSize (operandType (IC_RESULT (ic)));
2493 /* Special case for 1 or 2 byte return in far space. */
2497 emitcode ("mov", "b,%s", fReturn[1]);
2500 aopOp (IC_RESULT (ic), ic, FALSE, FALSE);
2501 aopPut (AOP (IC_RESULT (ic)), "a", 0);
2505 aopPut (AOP (IC_RESULT (ic)), "b", 1);
2507 freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
2512 aopOp (IC_RESULT (ic), ic, FALSE, TRUE);
2515 assignResultValue (IC_RESULT (ic));
2517 freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
2521 /* adjust the stack for parameters if
2523 if (ic->parmBytes) {
2525 if (options.stack10bit) {
2526 if (ic->parmBytes <= 10) {
2527 emitcode(";","stack adjustment for parms");
2528 for (i=0; i < ic->parmBytes ; i++) {
2529 emitcode("pop","acc");
2533 emitcode ("clr","c");
2534 emitcode ("mov","a,sp");
2535 emitcode ("subb","a,#!constbyte",ic->parmBytes & 0xff);
2536 emitcode ("mov","sp,a");
2537 emitcode ("mov","a,esp");
2538 emitcode ("anl","a,#3");
2539 emitcode ("subb","a,#!constbyte",(ic->parmBytes >> 8) & 0xff);
2540 emitcode ("mov","esp,a");
2544 if (ic->parmBytes > 3) {
2545 emitcode ("mov", "a,%s", spname);
2546 emitcode ("add", "a,#!constbyte", (-ic->parmBytes) & 0xff);
2547 emitcode ("mov", "%s,a", spname);
2549 for (i = 0; i < ic->parmBytes; i++)
2550 emitcode ("dec", "%s", spname);
2554 /* if we hade saved some registers then unsave them */
2556 unsaveRegisters (ic);
2558 /* if register bank was saved then pop them */
2560 unsaveRBank (FUNC_REGBANK (dtype), ic, FALSE);
2563 /*-----------------------------------------------------------------*/
2564 /* genPcall - generates a call by pointer statement */
2565 /*-----------------------------------------------------------------*/
2567 genPcall (iCode * ic)
2570 symbol *rlbl = newiTempLabel (NULL);
2571 bool restoreBank=FALSE;
2573 D (emitcode (";", "genPcall ");
2577 /* if caller saves & we have not saved then */
2581 /* if we are calling a function that is not using
2582 the same register bank then we need to save the
2583 destination registers on the stack */
2584 dtype = operandType (IC_LEFT (ic));
2585 if (currFunc && dtype && !IFFUNC_ISNAKED(dtype) &&
2586 IFFUNC_ISISR (currFunc->type) &&
2587 (FUNC_REGBANK (currFunc->type) != FUNC_REGBANK (dtype))) {
2588 saveRBank (FUNC_REGBANK (dtype), ic, TRUE);
2592 /* push the return address on to the stack */
2593 emitcode ("mov", "a,#!tlabel", (rlbl->key + 100));
2594 emitcode ("push", "acc");
2595 emitcode ("mov", "a,#!hil", (rlbl->key + 100));
2596 emitcode ("push", "acc");
2598 if (options.model == MODEL_FLAT24)
2600 emitcode ("mov", "a,#!hihil", (rlbl->key + 100));
2601 emitcode ("push", "acc");
2604 /* now push the calling address */
2605 aopOp (IC_LEFT (ic), ic, FALSE, FALSE);
2607 pushSide (IC_LEFT (ic), FPTRSIZE);
2609 freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
2611 /* if send set is not empty the assign */
2614 genSend(reverseSet(_G.sendSet));
2618 emitcode ("ret", "");
2619 emitcode ("", "!tlabeldef", (rlbl->key + 100));
2622 /* if we need assign a result value */
2623 if ((IS_ITEMP (IC_RESULT (ic)) &&
2624 (OP_SYMBOL (IC_RESULT (ic))->nRegs ||
2625 OP_SYMBOL (IC_RESULT (ic))->spildir)) ||
2626 IS_TRUE_SYMOP (IC_RESULT (ic)))
2630 aopOp (IC_RESULT (ic), ic, FALSE, TRUE);
2633 assignResultValue (IC_RESULT (ic));
2635 freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
2638 /* adjust the stack for parameters if
2643 if (options.stack10bit) {
2644 if (ic->parmBytes <= 10) {
2645 emitcode(";","stack adjustment for parms");
2646 for (i=0; i < ic->parmBytes ; i++) {
2647 emitcode("pop","acc");
2651 emitcode ("clr","c");
2652 emitcode ("mov","a,sp");
2653 emitcode ("subb","a,#!constbyte",ic->parmBytes & 0xff);
2654 emitcode ("mov","sp,a");
2655 emitcode ("mov","a,esp");
2656 emitcode ("anl","a,#3");
2657 emitcode ("subb","a,#!constbyte",(ic->parmBytes >> 8) & 0xff);
2658 emitcode ("mov","esp,a");
2662 if (ic->parmBytes > 3) {
2663 emitcode ("mov", "a,%s", spname);
2664 emitcode ("add", "a,#!constbyte", (-ic->parmBytes) & 0xff);
2665 emitcode ("mov", "%s,a", spname);
2668 for (i = 0; i < ic->parmBytes; i++)
2669 emitcode ("dec", "%s", spname);
2673 /* if register bank was saved then unsave them */
2675 unsaveRBank (FUNC_REGBANK (dtype), ic, TRUE);
2677 /* if we hade saved some registers then
2680 unsaveRegisters (ic);
2684 /*-----------------------------------------------------------------*/
2685 /* resultRemat - result is rematerializable */
2686 /*-----------------------------------------------------------------*/
2688 resultRemat (iCode * ic)
2690 if (SKIP_IC (ic) || ic->op == IFX)
2693 if (IC_RESULT (ic) && IS_ITEMP (IC_RESULT (ic)))
2695 symbol *sym = OP_SYMBOL (IC_RESULT (ic));
2696 if (sym->remat && !POINTER_SET (ic))
2703 #if defined(__BORLANDC__) || defined(_MSC_VER)
2704 #define STRCASECMP stricmp
2706 #define STRCASECMP strcasecmp
2709 /*-----------------------------------------------------------------*/
2710 /* inExcludeList - return 1 if the string is in exclude Reg list */
2711 /*-----------------------------------------------------------------*/
2713 inExcludeList (char *s)
2717 if (options.excludeRegs[i] &&
2718 STRCASECMP (options.excludeRegs[i], "none") == 0)
2721 for (i = 0; options.excludeRegs[i]; i++)
2723 if (options.excludeRegs[i] &&
2724 STRCASECMP (s, options.excludeRegs[i]) == 0)
2730 /*-----------------------------------------------------------------*/
2731 /* genFunction - generated code for function entry */
2732 /*-----------------------------------------------------------------*/
2734 genFunction (iCode * ic)
2738 bool switchedPSW = FALSE;
2740 D (emitcode (";", "genFunction "););
2743 /* create the function header */
2744 emitcode (";", "-----------------------------------------");
2745 emitcode (";", " function %s", (sym = OP_SYMBOL (IC_LEFT (ic)))->name);
2746 emitcode (";", "-----------------------------------------");
2748 emitcode ("", "%s:", sym->rname);
2749 ftype = operandType (IC_LEFT (ic));
2751 if (IFFUNC_ISNAKED(ftype))
2753 emitcode(";", "naked function: no prologue.");
2757 if (options.stack_probe)
2758 emitcode ("lcall","__stack_probe");
2759 /* if critical function then turn interrupts off */
2760 if (IFFUNC_ISCRITICAL (ftype))
2761 emitcode ("clr", "ea");
2763 /* here we need to generate the equates for the
2764 register bank if required */
2765 if (FUNC_REGBANK (ftype) != rbank)
2769 rbank = FUNC_REGBANK (ftype);
2770 for (i = 0; i < ds390_nRegs; i++)
2772 if (regs390[i].print) {
2773 if (strcmp (regs390[i].base, "0") == 0)
2774 emitcode ("", "%s !equ !constbyte",
2776 8 * rbank + regs390[i].offset);
2778 emitcode ("", "%s !equ %s + !constbyte",
2781 8 * rbank + regs390[i].offset);
2786 /* if this is an interrupt service routine then
2787 save acc, b, dpl, dph */
2788 if (IFFUNC_ISISR (sym->type))
2790 if (!inExcludeList ("acc"))
2791 emitcode ("push", "acc");
2792 if (!inExcludeList ("b"))
2793 emitcode ("push", "b");
2794 if (!inExcludeList ("dpl"))
2795 emitcode ("push", "dpl");
2796 if (!inExcludeList ("dph"))
2797 emitcode ("push", "dph");
2798 if (options.model == MODEL_FLAT24 && !inExcludeList ("dpx"))
2800 emitcode ("push", "dpx");
2801 /* Make sure we're using standard DPTR */
2802 emitcode ("push", "dps");
2803 emitcode ("mov", "dps,#0");
2804 if (options.stack10bit)
2806 /* This ISR could conceivably use DPTR2. Better save it. */
2807 emitcode ("push", "dpl1");
2808 emitcode ("push", "dph1");
2809 emitcode ("push", "dpx1");
2810 emitcode ("push", DP2_RESULT_REG);
2813 /* if this isr has no bank i.e. is going to
2814 run with bank 0 , then we need to save more
2816 if (!FUNC_REGBANK (sym->type))
2820 /* if this function does not call any other
2821 function then we can be economical and
2822 save only those registers that are used */
2823 if (!IFFUNC_HASFCALL(sym->type))
2826 /* if any registers used */
2829 /* save the registers used */
2830 for (i = 0; i < sym->regsUsed->size; i++)
2832 if (bitVectBitValue (sym->regsUsed, i) ||
2833 (ds390_ptrRegReq && (i == R0_IDX || i == R1_IDX)))
2834 emitcode ("push", "%s", ds390_regWithIdx (i)->dname);
2841 /* this function has a function call cannot
2842 determines register usage so we will have to push the
2844 saveRBank (0, ic, FALSE);
2845 if (options.parms_in_bank1) {
2846 for (i=0; i < 8 ; i++ ) {
2847 emitcode ("push","%s",rb1regs[i]);
2854 /* This ISR uses a non-zero bank.
2856 * We assume that the bank is available for our
2859 * However, if this ISR calls a function which uses some
2860 * other bank, we must save that bank entirely.
2862 unsigned long banksToSave = 0;
2864 if (IFFUNC_HASFCALL(sym->type))
2867 #define MAX_REGISTER_BANKS 4
2872 for (i = ic; i; i = i->next)
2874 if (i->op == ENDFUNCTION)
2876 /* we got to the end OK. */
2884 dtype = operandType (IC_LEFT(i));
2886 && FUNC_REGBANK(dtype) != FUNC_REGBANK(sym->type))
2888 /* Mark this bank for saving. */
2889 if (FUNC_REGBANK(dtype) >= MAX_REGISTER_BANKS)
2891 werror(E_NO_SUCH_BANK, FUNC_REGBANK(dtype));
2895 banksToSave |= (1 << FUNC_REGBANK(dtype));
2898 /* And note that we don't need to do it in
2906 /* This is a mess; we have no idea what
2907 * register bank the called function might
2910 * The only thing I can think of to do is
2911 * throw a warning and hope.
2913 werror(W_FUNCPTR_IN_USING_ISR);
2917 if (banksToSave && options.useXstack)
2919 /* Since we aren't passing it an ic,
2920 * saveRBank will assume r0 is available to abuse.
2922 * So switch to our (trashable) bank now, so
2923 * the caller's R0 isn't trashed.
2925 emitcode ("push", "psw");
2926 emitcode ("mov", "psw,#!constbyte",
2927 (FUNC_REGBANK (sym->type) << 3) & 0x00ff);
2931 for (ix = 0; ix < MAX_REGISTER_BANKS; ix++)
2933 if (banksToSave & (1 << ix))
2935 saveRBank(ix, NULL, FALSE);
2939 // jwk: this needs a closer look
2940 SPEC_ISR_SAVED_BANKS(currFunc->etype) = banksToSave;
2945 /* if callee-save to be used for this function
2946 then save the registers being used in this function */
2947 if (IFFUNC_CALLEESAVES(sym->type))
2951 /* if any registers used */
2954 /* save the registers used */
2955 for (i = 0; i < sym->regsUsed->size; i++)
2957 if (bitVectBitValue (sym->regsUsed, i) ||
2958 (ds390_ptrRegReq && (i == R0_IDX || i == R1_IDX)))
2960 emitcode ("push", "%s", ds390_regWithIdx (i)->dname);
2968 /* set the register bank to the desired value */
2969 if ((FUNC_REGBANK (sym->type) || FUNC_ISISR (sym->type))
2972 emitcode ("push", "psw");
2973 emitcode ("mov", "psw,#!constbyte", (FUNC_REGBANK (sym->type) << 3) & 0x00ff);
2976 if ( (IFFUNC_ISREENT (sym->type) || options.stackAuto) &&
2977 (sym->stack || FUNC_HASSTACKPARM(sym->type))) {
2978 if (options.stack10bit) {
2979 emitcode ("push","_bpx");
2980 emitcode ("push","_bpx+1");
2981 emitcode ("mov","_bpx,%s",spname);
2982 emitcode ("mov","_bpx+1,esp");
2983 emitcode ("anl","_bpx+1,#3");
2985 if (options.useXstack) {
2986 emitcode ("mov", "r0,%s", spname);
2987 emitcode ("mov", "a,_bp");
2988 emitcode ("movx", "@r0,a");
2989 emitcode ("inc", "%s", spname);
2991 /* set up the stack */
2992 emitcode ("push", "_bp"); /* save the callers stack */
2994 emitcode ("mov", "_bp,%s", spname);
2998 /* adjust the stack for the function */
3001 if (options.stack10bit) {
3002 if ( i > 1024) werror (W_STACK_OVERFLOW, sym->name);
3003 assert (sym->recvSize <= 4);
3004 if (sym->stack <= 8) {
3005 while (i--) emitcode ("push","acc");
3008 emitcode ("mov","a,sp");
3009 emitcode ("add","a,#!constbyte", ((short) sym->stack & 0xff));
3010 emitcode ("mov","sp,a");
3011 emitcode ("mov","a,esp");
3012 emitcode ("anl","a,#3");
3013 emitcode ("addc","a,#!constbyte", (((short) sym->stack) >> 8) & 0xff);
3014 emitcode ("mov","esp,a");
3019 werror (W_STACK_OVERFLOW, sym->name);
3021 if (i > 3 && sym->recvSize < 4) {
3023 emitcode ("mov", "a,sp");
3024 emitcode ("add", "a,#!constbyte", ((char) sym->stack & 0xff));
3025 emitcode ("mov", "sp,a");
3029 emitcode ("inc", "sp");
3036 emitcode ("mov", "a,_spx");
3037 emitcode ("add", "a,#!constbyte", ((char) sym->xstack & 0xff));
3038 emitcode ("mov", "_spx,a");
3043 /*-----------------------------------------------------------------*/
3044 /* genEndFunction - generates epilogue for functions */
3045 /*-----------------------------------------------------------------*/
3047 genEndFunction (iCode * ic)
3049 symbol *sym = OP_SYMBOL (IC_LEFT (ic));
3051 D (emitcode (";", "genEndFunction "););
3053 if (IFFUNC_ISNAKED(sym->type))
3055 emitcode(";", "naked function: no epilogue.");
3059 if ((IFFUNC_ISREENT (sym->type) || options.stackAuto) &&
3060 (sym->stack || FUNC_HASSTACKPARM(sym->type))) {
3062 if (options.stack10bit) {
3064 emitcode ("mov", "sp,_bpx", spname);
3065 emitcode ("mov", "esp,_bpx+1", spname);
3068 emitcode ("mov", "%s,_bp", spname);
3072 /* if use external stack but some variables were
3073 added to the local stack then decrement the
3075 if (options.useXstack && sym->stack) {
3076 emitcode ("mov", "a,sp");
3077 emitcode ("add", "a,#!constbyte", ((char) -sym->stack) & 0xff);
3078 emitcode ("mov", "sp,a");
3082 if ((IFFUNC_ISREENT (sym->type) || options.stackAuto) &&
3083 (sym->stack || FUNC_HASSTACKPARM(sym->type))) {
3085 if (options.useXstack) {
3086 emitcode ("mov", "r0,%s", spname);
3087 emitcode ("movx", "a,@r0");
3088 emitcode ("mov", "_bp,a");
3089 emitcode ("dec", "%s", spname);
3091 if (options.stack10bit) {
3092 emitcode ("pop", "_bpx+1");
3093 emitcode ("pop", "_bpx");
3095 emitcode ("pop", "_bp");
3100 /* restore the register bank */
3101 if (FUNC_REGBANK (sym->type) || IFFUNC_ISISR (sym->type))
3103 if (!FUNC_REGBANK (sym->type) || !IFFUNC_ISISR (sym->type)
3104 || !options.useXstack)
3106 /* Special case of ISR using non-zero bank with useXstack
3109 emitcode ("pop", "psw");
3113 if (IFFUNC_ISISR (sym->type))
3116 /* now we need to restore the registers */
3117 /* if this isr has no bank i.e. is going to
3118 run with bank 0 , then we need to save more
3120 if (!FUNC_REGBANK (sym->type))
3123 /* if this function does not call any other
3124 function then we can be economical and
3125 save only those registers that are used */
3126 if (!IFFUNC_HASFCALL(sym->type))
3129 /* if any registers used */
3132 /* save the registers used */
3133 for (i = sym->regsUsed->size; i >= 0; i--)
3135 if (bitVectBitValue (sym->regsUsed, i) ||
3136 (ds390_ptrRegReq && (i == R0_IDX || i == R1_IDX)))
3137 emitcode ("pop", "%s", ds390_regWithIdx (i)->dname);
3144 /* this function has a function call cannot
3145 determines register usage so we will have to pop the
3147 if (options.parms_in_bank1) {
3148 for (i = 7 ; i >= 0 ; i-- ) {
3149 emitcode ("pop","%s",rb1regs[i]);
3152 unsaveRBank (0, ic, FALSE);
3157 /* This ISR uses a non-zero bank.
3159 * Restore any register banks saved by genFunction
3162 // jwk: this needs a closer look
3163 unsigned savedBanks = SPEC_ISR_SAVED_BANKS(currFunc->etype);
3166 for (ix = MAX_REGISTER_BANKS - 1; ix >= 0; ix--)
3168 if (savedBanks & (1 << ix))
3170 unsaveRBank(ix, NULL, FALSE);
3174 if (options.useXstack)
3176 /* Restore bank AFTER calling unsaveRBank,
3177 * since it can trash r0.
3179 emitcode ("pop", "psw");
3183 if (options.model == MODEL_FLAT24 && !inExcludeList ("dpx"))
3185 if (options.stack10bit)
3187 emitcode ("pop", DP2_RESULT_REG);
3188 emitcode ("pop", "dpx1");
3189 emitcode ("pop", "dph1");
3190 emitcode ("pop", "dpl1");
3192 emitcode ("pop", "dps");
3193 emitcode ("pop", "dpx");
3195 if (!inExcludeList ("dph"))
3196 emitcode ("pop", "dph");
3197 if (!inExcludeList ("dpl"))
3198 emitcode ("pop", "dpl");
3199 if (!inExcludeList ("b"))
3200 emitcode ("pop", "b");
3201 if (!inExcludeList ("acc"))
3202 emitcode ("pop", "acc");
3204 if (IFFUNC_ISCRITICAL (sym->type))
3205 emitcode ("setb", "ea");
3207 /* if debug then send end of function */
3208 if (options.debug && currFunc) {
3210 emitcode ("", "C$%s$%d$%d$%d ==.",
3211 FileBaseName (ic->filename), currFunc->lastLine,
3212 ic->level, ic->block);
3213 if (IS_STATIC (currFunc->etype))
3214 emitcode ("", "XF%s$%s$0$0 ==.", moduleName, currFunc->name);
3216 emitcode ("", "XG$%s$0$0 ==.", currFunc->name);
3220 emitcode ("reti", "");
3224 if (IFFUNC_ISCRITICAL (sym->type))
3225 emitcode ("setb", "ea");
3227 if (IFFUNC_CALLEESAVES(sym->type))
3231 /* if any registers used */
3234 /* save the registers used */
3235 for (i = sym->regsUsed->size; i >= 0; i--)
3237 if (bitVectBitValue (sym->regsUsed, i) ||
3238 (ds390_ptrRegReq && (i == R0_IDX || i == R1_IDX)))
3239 emitcode ("pop", "%s", ds390_regWithIdx (i)->dname);
3245 /* if debug then send end of function */
3246 if (options.debug && currFunc)
3249 emitcode ("", "C$%s$%d$%d$%d ==.",
3250 FileBaseName (ic->filename), currFunc->lastLine,
3251 ic->level, ic->block);
3252 if (IS_STATIC (currFunc->etype))
3253 emitcode ("", "XF%s$%s$0$0 ==.", moduleName, currFunc->name);
3255 emitcode ("", "XG$%s$0$0 ==.", currFunc->name);
3259 emitcode ("ret", "");
3264 /*-----------------------------------------------------------------*/
3265 /* genJavaNativeRet - generate code for return JavaNative */
3266 /*-----------------------------------------------------------------*/
3267 static void genJavaNativeRet(iCode *ic)
3271 aopOp (IC_LEFT (ic), ic, FALSE,
3272 (IS_SYMOP(IC_LEFT(ic)) && OP_SYMBOL(IC_LEFT(ic))->ruonly ? FALSE :TRUE));
3273 size = AOP_SIZE (IC_LEFT (ic));
3277 /* it is assigned to GPR0-R3 then push them */
3278 if (aopHasRegs(AOP(IC_LEFT(ic)),R0_IDX,R1_IDX) ||
3279 aopHasRegs(AOP(IC_LEFT(ic)),R2_IDX,R3_IDX)) {
3280 for (i = 0 ; i < size ; i++ ) {
3281 emitcode ("push","%s",aopGet(AOP(IC_LEFT(ic)),i,FALSE,TRUE,FALSE));
3283 for (i = (size-1) ; i >= 0 ; i--) {
3284 emitcode ("pop","a%s",javaRet[i]);
3287 for (i = 0 ; i < size ; i++)
3288 emitcode ("mov","%s,%s",javaRet[i],aopGet(AOP(IC_LEFT(ic)),i,FALSE,TRUE,FALSE));
3290 for (i = size ; i < 4 ; i++ )
3291 emitcode ("mov","%s,#0",javaRet[i]);
3295 /*-----------------------------------------------------------------*/
3296 /* genRet - generate code for return statement */
3297 /*-----------------------------------------------------------------*/
3301 int size, offset = 0, pushed = 0;
3303 D (emitcode (";", "genRet ");
3306 /* if we have no return value then
3307 just generate the "ret" */
3311 /* if this is a JavaNative function then return
3312 value in different register */
3313 if (IFFUNC_ISJAVANATIVE(currFunc->type)) {
3314 genJavaNativeRet(ic);
3317 /* we have something to return then
3318 move the return value into place */
3319 aopOp (IC_LEFT (ic), ic, FALSE,
3320 (IS_SYMOP(IC_LEFT(ic)) && OP_SYMBOL(IC_LEFT(ic))->ruonly ? FALSE :TRUE));
3321 size = AOP_SIZE (IC_LEFT (ic));
3323 _startLazyDPSEvaluation ();
3327 if (AOP_TYPE (IC_LEFT (ic)) == AOP_DPTR)
3329 l = aopGet (AOP (IC_LEFT (ic)), offset++,
3330 FALSE, TRUE, FALSE);
3331 emitcode ("push", "%s", l);
3336 /* Since A is the last element of fReturn,
3337 * is is OK to clobber it in the aopGet.
3339 l = aopGet (AOP (IC_LEFT (ic)), offset,
3340 FALSE, FALSE, TRUE);
3341 if (strcmp (fReturn[offset], l))
3342 emitcode ("mov", "%s,%s", fReturn[offset++], l);
3345 _endLazyDPSEvaluation ();
3352 if (strcmp (fReturn[pushed], "a"))
3353 emitcode ("pop", fReturn[pushed]);
3355 emitcode ("pop", "acc");
3358 freeAsmop (IC_LEFT (ic), NULL, ic, TRUE);
3361 /* generate a jump to the return label
3362 if the next is not the return statement */
3363 if (!(ic->next && ic->next->op == LABEL &&
3364 IC_LABEL (ic->next) == returnLabel))
3366 emitcode ("ljmp", "!tlabel", (returnLabel->key + 100));
3370 /*-----------------------------------------------------------------*/
3371 /* genLabel - generates a label */
3372 /*-----------------------------------------------------------------*/
3374 genLabel (iCode * ic)
3376 /* special case never generate */
3377 if (IC_LABEL (ic) == entryLabel)
3380 D (emitcode (";", "genLabel ");
3383 emitcode ("", "!tlabeldef", (IC_LABEL (ic)->key + 100));
3386 /*-----------------------------------------------------------------*/
3387 /* genGoto - generates a ljmp */
3388 /*-----------------------------------------------------------------*/
3390 genGoto (iCode * ic)
3392 D (emitcode (";", "genGoto ");
3394 emitcode ("ljmp", "!tlabel", (IC_LABEL (ic)->key + 100));
3397 /*-----------------------------------------------------------------*/
3398 /* findLabelBackwards: walks back through the iCode chain looking */
3399 /* for the given label. Returns number of iCode instructions */
3400 /* between that label and given ic. */
3401 /* Returns zero if label not found. */
3402 /*-----------------------------------------------------------------*/
3404 findLabelBackwards (iCode * ic, int key)
3413 /* If we have any pushes or pops, we cannot predict the distance.
3414 I don't like this at all, this should be dealt with in the
3416 if (ic->op == IPUSH || ic->op == IPOP) {
3420 if (ic->op == LABEL && IC_LABEL (ic)->key == key)
3422 /* printf("findLabelBackwards = %d\n", count); */
3430 /*-----------------------------------------------------------------*/
3431 /* genPlusIncr :- does addition with increment if possible */
3432 /*-----------------------------------------------------------------*/
3434 genPlusIncr (iCode * ic)
3436 unsigned int icount;
3437 unsigned int size = getDataSize (IC_RESULT (ic));
3439 /* will try to generate an increment */
3440 /* if the right side is not a literal
3442 if (AOP_TYPE (IC_RIGHT (ic)) != AOP_LIT)
3445 /* if the literal value of the right hand side
3446 is greater than 4 then it is not worth it */
3447 if ((icount = (unsigned int) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit)) > 4)
3450 if (size == 1 && AOP(IC_LEFT(ic)) == AOP(IC_RESULT(ic)) &&
3451 AOP_TYPE(IC_LEFT(ic)) == AOP_DIR ) {
3453 emitcode("inc","%s",aopGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE,FALSE));
3457 /* if increment 16 bits in register */
3459 AOP_TYPE (IC_LEFT (ic)) == AOP_REG &&
3460 AOP_TYPE (IC_RESULT (ic)) == AOP_REG &&
3461 sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))) &&
3469 /* If the next instruction is a goto and the goto target
3470 * is <= 5 instructions previous to this, we can generate
3471 * jumps straight to that target.
3473 if (ic->next && ic->next->op == GOTO
3474 && (labelRange = findLabelBackwards (ic, IC_LABEL (ic->next)->key)) != 0
3477 emitcode (";", "tail increment optimized (range %d)", labelRange);
3478 tlbl = IC_LABEL (ic->next);
3483 tlbl = newiTempLabel (NULL);
3486 emitcode ("inc", "%s", aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE, FALSE));
3487 if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG ||
3488 IS_AOP_PREG (IC_RESULT (ic)))
3489 emitcode ("cjne", "%s,#0,!tlabel"
3490 ,aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE, FALSE)
3494 emitcode ("clr", "a");
3495 emitcode ("cjne", "a,%s,!tlabel"
3496 ,aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE, FALSE)
3500 emitcode ("inc", "%s", aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE, FALSE));
3503 if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG ||
3504 IS_AOP_PREG (IC_RESULT (ic)))
3505 emitcode ("cjne", "%s,#0,!tlabel"
3506 ,aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE, FALSE)
3509 emitcode ("cjne", "a,%s,!tlabel"
3510 ,aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE, FALSE)
3513 emitcode ("inc", "%s", aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE, FALSE));
3517 if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG ||
3518 IS_AOP_PREG (IC_RESULT (ic)))
3519 emitcode ("cjne", "%s,#0,!tlabel"
3520 ,aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE, FALSE)
3524 emitcode ("cjne", "a,%s,!tlabel"
3525 ,aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE, FALSE)
3528 emitcode ("inc", "%s", aopGet (AOP (IC_RESULT (ic)), MSB32, FALSE, FALSE, FALSE));
3533 emitcode ("", "!tlabeldef", tlbl->key + 100);
3538 if (AOP_TYPE(IC_RESULT(ic))==AOP_STR && IS_ITEMP(IC_RESULT(ic)) &&
3539 !AOP_USESDPTR(IC_LEFT(ic)) && icount <= 5 && size <= 3 &&
3540 options.model == MODEL_FLAT24 ) {
3544 emitcode ("mov","dpx,%s",aopGet(AOP (IC_LEFT (ic)), 2, FALSE, FALSE, FALSE));
3546 emitcode ("mov","dph,%s",aopGet(AOP (IC_LEFT (ic)), 1, FALSE, FALSE, FALSE));
3548 emitcode ("mov","dpl,%s",aopGet(AOP (IC_LEFT (ic)), 0, FALSE, FALSE, FALSE));
3551 while (icount--) emitcode ("inc","dptr");
3555 if (AOP_INDPTRn(IC_LEFT(ic)) && AOP_INDPTRn(IC_RESULT(ic)) &&
3556 AOP(IC_LEFT(ic))->aopu.dptr == AOP(IC_RESULT(ic))->aopu.dptr &&
3558 emitcode ("mov","dps,#!constbyte",AOP(IC_LEFT(ic))->aopu.dptr);
3559 while (icount--) emitcode ("inc","dptr");
3560 emitcode ("mov","dps,#0");
3564 /* if the sizes are greater than 1 then we cannot */
3565 if (AOP_SIZE (IC_RESULT (ic)) > 1 ||
3566 AOP_SIZE (IC_LEFT (ic)) > 1)
3569 /* we can if the aops of the left & result match or
3570 if they are in registers and the registers are the
3573 AOP_TYPE (IC_LEFT (ic)) == AOP_REG &&
3574 AOP_TYPE (IC_RESULT (ic)) == AOP_REG &&
3575 sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))))
3580 MOVA (aopGet (AOP (IC_LEFT (ic)), 0, FALSE, FALSE, TRUE));
3581 emitcode ("add", "a,#!constbyte", ((char) icount) & 0xff);
3582 aopPut (AOP (IC_RESULT (ic)), "a", 0);
3587 _startLazyDPSEvaluation ();
3590 emitcode ("inc", "%s", aopGet (AOP (IC_LEFT (ic)), 0, FALSE, FALSE, FALSE));
3592 _endLazyDPSEvaluation ();
3601 /*-----------------------------------------------------------------*/
3602 /* outBitAcc - output a bit in acc */
3603 /*-----------------------------------------------------------------*/
3605 outBitAcc (operand * result)
3607 symbol *tlbl = newiTempLabel (NULL);
3608 /* if the result is a bit */
3609 if (AOP_TYPE (result) == AOP_CRY)
3611 aopPut (AOP (result), "a", 0);
3615 emitcode ("jz", "!tlabel", tlbl->key + 100);
3616 emitcode ("mov", "a,%s", one);
3617 emitcode ("", "!tlabeldef", tlbl->key + 100);
3622 /*-----------------------------------------------------------------*/
3623 /* genPlusBits - generates code for addition of two bits */
3624 /*-----------------------------------------------------------------*/
3626 genPlusBits (iCode * ic)
3628 D (emitcode (";", "genPlusBits ");
3630 if (AOP_TYPE (IC_RESULT (ic)) == AOP_CRY)
3632 symbol *lbl = newiTempLabel (NULL);
3633 emitcode ("mov", "c,%s", AOP (IC_LEFT (ic))->aopu.aop_dir);
3634 emitcode ("jnb", "%s,!tlabel", AOP (IC_RIGHT (ic))->aopu.aop_dir, (lbl->key + 100));
3635 emitcode ("cpl", "c");
3636 emitcode ("", "!tlabeldef", (lbl->key + 100));
3637 outBitC (IC_RESULT (ic));
3641 emitcode ("clr", "a");
3642 emitcode ("mov", "c,%s", AOP (IC_LEFT (ic))->aopu.aop_dir);
3643 emitcode ("rlc", "a");
3644 emitcode ("mov", "c,%s", AOP (IC_RIGHT (ic))->aopu.aop_dir);
3645 emitcode ("addc", "a,#0");
3646 outAcc (IC_RESULT (ic));
3651 adjustArithmeticResult (iCode * ic)
3653 if (opIsGptr (IC_RESULT (ic)) &&
3654 opIsGptr (IC_LEFT (ic)) &&
3655 !sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic))))
3657 aopPut (AOP (IC_RESULT (ic)),
3658 aopGet (AOP (IC_LEFT (ic)), GPTRSIZE - 1, FALSE, FALSE, FALSE),
3662 if (opIsGptr (IC_RESULT (ic)) &&
3663 opIsGptr (IC_RIGHT (ic)) &&
3664 !sameRegs (AOP (IC_RESULT (ic)), AOP (IC_RIGHT (ic))))
3666 aopPut (AOP (IC_RESULT (ic)),
3667 aopGet (AOP (IC_RIGHT (ic)), GPTRSIZE - 1, FALSE, FALSE, FALSE),
3671 if (opIsGptr (IC_RESULT (ic)) &&
3672 AOP_SIZE (IC_LEFT (ic)) < GPTRSIZE &&
3673 AOP_SIZE (IC_RIGHT (ic)) < GPTRSIZE &&
3674 !sameRegs (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic))) &&
3675 !sameRegs (AOP (IC_RESULT (ic)), AOP (IC_RIGHT (ic))))
3678 sprintf (buffer, "#%d", pointerCode (getSpec (operandType (IC_LEFT (ic)))));
3679 aopPut (AOP (IC_RESULT (ic)), buffer, GPTRSIZE - 1);
3683 #ifdef KEVIN_SCREWED_UP
3684 // Macro to aopOp all three operands of an ic. If this cannot be done,
3685 // the IC_LEFT and IC_RIGHT operands will be aopOp'd, and the rc parameter
3686 // will be set TRUE. The caller must then handle the case specially, noting
3687 // that the IC_RESULT operand is not aopOp'd.
3688 #define AOP_OP_3_NOFATAL(ic, rc) \
3689 aopOp (IC_RIGHT(ic),ic,FALSE, FALSE); \
3690 aopOp (IC_LEFT(ic),ic,FALSE, (AOP_TYPE(IC_RIGHT(ic)) == AOP_DPTR) || \
3691 ((OP_SYMBOL(IC_RESULT(ic))->ruonly) && !isOperandEqual(IC_LEFT(ic),IC_RESULT(ic)))); \
3692 if (AOP_TYPE(IC_LEFT(ic)) == AOP_DPTR2 && \
3693 (isOperandInFarSpace(IC_RESULT(ic)) || (OP_SYMBOL(IC_RESULT(ic))->ruonly && !isOperandEqual(IC_LEFT(ic),IC_RESULT(ic))))) \
3695 /* No can do; DPTR & DPTR2 in use, and we need another. */ \
3700 aopOp (IC_RESULT(ic),ic,TRUE, (AOP_TYPE(IC_LEFT(ic)) == AOP_DPTR) || \
3701 (AOP_TYPE(IC_RIGHT(ic)) == AOP_DPTR)); \
3703 if (AOP_TYPE(IC_LEFT(ic)) == AOP_DPTR2 && \
3704 AOP_TYPE(IC_RESULT(ic)) == AOP_DPTR2) \
3706 /* werror(E_INTERNAL_ERROR,__FILE__,__LINE__, */ \
3708 "Ack: got unexpected DP2! (%s:%d %s:%d)\n", __FILE__, __LINE__, ic->filename, ic->lineno); \
3712 // aopOp the left & right operands of an ic.
3713 #define AOP_OP_2(ic) \
3714 aopOp (IC_RIGHT(ic),ic,FALSE, FALSE); \
3715 aopOp (IC_LEFT(ic),ic,FALSE, (AOP_TYPE(IC_RIGHT(ic)) == AOP_DPTR));
3717 #else // Kevin didn't screw up...
3719 #define AOP_IS_STR(x) (IS_SYMOP(x) && OP_SYMBOL(x)->ruonly)
3721 // The guts of AOP_OP_3_NOFATAL. Generates the left & right opcodes of an IC,
3722 // generates the result if possible. If result is generated, returns TRUE; otherwise
3723 // returns false and caller must deal with fact that result isn't aopOp'd.
3724 bool aopOp3(iCode * ic)
3726 bool dp1InUse, dp2InUse;
3728 // First, generate the right opcode. DPTR may be used if neither left nor result are
3731 D(emitcode(";", "aopOp3: AOP_IS_STR left: %s right %s result: %s",
3732 AOP_IS_STR(IC_LEFT(ic)) ? "true" : "false",
3733 AOP_IS_STR(IC_RIGHT(ic)) ? "true" : "false",
3734 AOP_IS_STR(IC_RESULT(ic)) ? "true" : "false");
3737 aopOp (IC_RIGHT(ic),ic,FALSE, AOP_IS_STR(IC_LEFT(ic)) || AOP_IS_STR(IC_RESULT(ic)));
3739 // Now, the left opcode. This can use DPTR if the right didn't AND the result is not
3740 // AOP_STR (however, if the result is the same operand as the left, then DPTR may be used).
3741 aopOp (IC_LEFT(ic),ic,FALSE, AOP_USESDPTR(IC_RIGHT(ic)) ||
3742 (AOP_IS_STR(IC_RESULT(ic)) && !isOperandEqual(IC_LEFT(ic),IC_RESULT(ic))));
3744 // We've op'd the left. So, if left & result are the same operand, we know aopOp
3745 // will succeed, and we can just do it & bail.
3746 if (isOperandEqual(IC_LEFT(ic),IC_RESULT(ic)))
3748 D(emitcode(";", "aopOp3: left & result equal"););
3749 aopOp(IC_RESULT(ic),ic,TRUE, FALSE);
3753 // Note which dptrs are currently in use.
3754 dp1InUse = (AOP_TYPE(IC_RIGHT(ic)) == AOP_DPTR) || (AOP_TYPE(IC_LEFT(ic)) == AOP_DPTR) ||
3755 AOP_IS_STR(IC_RIGHT(ic)) || AOP_IS_STR(IC_LEFT(ic));
3756 dp2InUse = (AOP_TYPE(IC_RIGHT(ic)) == AOP_DPTR2) || (AOP_TYPE(IC_LEFT(ic)) == AOP_DPTR2);
3758 // OK, now if either left or right uses DPTR and the result is an AOP_STR, we cannot generate it.
3759 if (dp1InUse && AOP_IS_STR(IC_RESULT(ic)))
3764 // or, if both dp1 & dp2 are in use and the result needs a dptr, we're out of luck
3765 if (dp1InUse && dp2InUse && isOperandInFarSpace(IC_RESULT(ic)))
3770 aopOp (IC_RESULT(ic),ic,TRUE, dp1InUse);
3772 // SOme sanity checking...
3773 if (AOP_TYPE(IC_LEFT(ic)) == AOP_DPTR2 &&
3774 AOP_TYPE(IC_RESULT(ic)) == AOP_DPTR2)
3777 "Ack: got unexpected DP2! (%s:%d %s:%d)\n",
3778 __FILE__, __LINE__, ic->filename, ic->lineno);
3784 // Macro to aopOp all three operands of an ic. If this cannot be done,
3785 // the IC_LEFT and IC_RIGHT operands will be aopOp'd, and the rc parameter
3786 // will be set TRUE. The caller must then handle the case specially, noting
3787 // that the IC_RESULT operand is not aopOp'd.
3789 #define AOP_OP_3_NOFATAL(ic, rc) \
3790 do { rc = !aopOp3(ic); } while (0)
3792 // aopOp the left & right operands of an ic.
3793 #define AOP_OP_2(ic) \
3794 aopOp (IC_RIGHT(ic),ic,FALSE, AOP_IS_STR(IC_LEFT(ic))); \
3795 aopOp (IC_LEFT(ic),ic,FALSE, AOP_USESDPTR(IC_RIGHT(ic)));
3799 // convienience macro.
3800 #define AOP_SET_LOCALS(ic) \
3801 left = IC_LEFT(ic); \
3802 right = IC_RIGHT(ic); \
3803 result = IC_RESULT(ic);
3806 // Given an integer value of pushedSize bytes on the stack,
3807 // adjust it to be resultSize bytes, either by discarding
3808 // the most significant bytes or by zero-padding.
3810 // On exit from this macro, pushedSize will have been adjusted to
3811 // equal resultSize, and ACC may be trashed.
3812 #define ADJUST_PUSHED_RESULT(pushedSize, resultSize) \
3813 /* If the pushed data is bigger than the result, \
3814 * simply discard unused bytes. Icky, but works. \
3816 while (pushedSize > resultSize) \
3818 D (emitcode (";", "discarding unused result byte."););\
3819 emitcode ("pop", "acc"); \
3822 if (pushedSize < resultSize) \
3824 emitcode ("clr", "a"); \
3825 /* Conversly, we haven't pushed enough here. \
3826 * just zero-pad, and all is well. \
3828 while (pushedSize < resultSize) \
3830 emitcode("push", "acc"); \
3834 assert(pushedSize == resultSize);
3836 /*-----------------------------------------------------------------*/
3837 /* genPlus - generates code for addition */
3838 /*-----------------------------------------------------------------*/
3840 genPlus (iCode * ic)
3842 int size, offset = 0;
3843 bool pushResult = FALSE;
3846 D (emitcode (";", "genPlus "););
3848 /* special cases :- */
3849 if ( IS_SYMOP(IC_LEFT(ic)) && OP_SYMBOL(IC_LEFT(ic))->ruonly &&
3850 isOperandLiteral(IC_RIGHT(ic)) && OP_SYMBOL(IC_RESULT(ic))->ruonly) {
3851 aopOp (IC_RIGHT (ic), ic, TRUE, FALSE);
3852 size = floatFromVal (AOP (IC_RIGHT(ic))->aopu.aop_lit);
3854 while (size--) emitcode ("inc","dptr");
3856 emitcode ("mov","a,dpl");
3857 emitcode ("add","a,#!constbyte",size & 0xff);
3858 emitcode ("mov","dpl,a");
3859 emitcode ("mov","a,dph");
3860 emitcode ("addc","a,#!constbyte",(size >> 8) & 0xff);
3861 emitcode ("mov","dph,a");
3862 emitcode ("mov","a,dpx");
3863 emitcode ("addc","a,#!constbyte",(size >> 16) & 0xff);
3864 emitcode ("mov","dpx,a");
3866 freeAsmop (IC_RIGHT (ic), NULL, ic, FALSE);
3869 if ( IS_SYMOP(IC_LEFT(ic)) &&
3870 OP_SYMBOL(IC_LEFT(ic))->remat &&
3871 isOperandInFarSpace(IC_RIGHT(ic))) {
3872 operand *op = IC_RIGHT(ic);
3873 IC_RIGHT(ic) = IC_LEFT(ic);
3877 AOP_OP_3_NOFATAL (ic, pushResult);
3880 D (emitcode (";", "genPlus: must push result: 3 ops in far space"););
3885 /* if literal, literal on the right or
3886 if left requires ACC or right is already
3888 if ((AOP_TYPE (IC_LEFT (ic)) == AOP_LIT)
3889 || ((AOP_NEEDSACC (IC_LEFT (ic))) && !(AOP_NEEDSACC (IC_RIGHT (ic))))
3890 || AOP_TYPE (IC_RIGHT (ic)) == AOP_ACC)
3892 operand *t = IC_RIGHT (ic);
3893 IC_RIGHT (ic) = IC_LEFT (ic);
3895 emitcode (";", "Swapped plus args.");
3898 /* if both left & right are in bit
3900 if (AOP_TYPE (IC_LEFT (ic)) == AOP_CRY &&
3901 AOP_TYPE (IC_RIGHT (ic)) == AOP_CRY)
3907 /* if left in bit space & right literal */
3908 if (AOP_TYPE (IC_LEFT (ic)) == AOP_CRY &&
3909 AOP_TYPE (IC_RIGHT (ic)) == AOP_LIT)
3911 emitcode ("mov", "c,%s", AOP (IC_LEFT (ic))->aopu.aop_dir);
3912 /* if result in bit space */
3913 if (AOP_TYPE (IC_RESULT (ic)) == AOP_CRY)
3915 if ((unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit) != 0L)
3916 emitcode ("cpl", "c");
3917 outBitC (IC_RESULT (ic));
3921 size = getDataSize (IC_RESULT (ic));
3922 _startLazyDPSEvaluation ();
3925 MOVA (aopGet (AOP (IC_RIGHT (ic)), offset, FALSE, FALSE, TRUE));
3926 emitcode ("addc", "a,#0");
3927 aopPut (AOP (IC_RESULT (ic)), "a", offset++);
3929 _endLazyDPSEvaluation ();
3934 /* if I can do an increment instead
3935 of add then GOOD for ME */
3936 if (genPlusIncr (ic) == TRUE)
3938 emitcode (";", "did genPlusIncr");
3943 size = getDataSize (pushResult ? IC_LEFT (ic) : IC_RESULT (ic));
3945 _startLazyDPSEvaluation ();
3948 if (AOP_TYPE(IC_LEFT(ic)) == AOP_ACC && !AOP_NEEDSACC(IC_RIGHT(ic)))
3950 MOVA (aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE, TRUE));
3952 emitcode ("add", "a,%s",
3953 aopGet (AOP (IC_RIGHT (ic)), offset, FALSE, FALSE, FALSE));
3955 emitcode ("addc", "a,%s",
3956 aopGet (AOP (IC_RIGHT (ic)), offset, FALSE, FALSE, FALSE));
3960 if (AOP_TYPE(IC_LEFT(ic)) == AOP_ACC && (offset == 0))
3962 /* right is going to use ACC or we would have taken the
3965 assert(AOP_NEEDSACC(IC_RIGHT(ic)));
3967 D(emitcode(";", "+ AOP_ACC special case."););
3968 emitcode("xch", "a, %s", DP2_RESULT_REG);
3970 MOVA (aopGet (AOP (IC_RIGHT (ic)), offset, FALSE, FALSE, TRUE));
3973 if (AOP_TYPE(IC_LEFT(ic)) == AOP_ACC)
3976 emitcode("add", "a, %s", DP2_RESULT_REG);
3980 emitcode ("add", "a,%s",
3981 aopGet (AOP(IC_LEFT(ic)), offset, FALSE, FALSE, FALSE));
3986 emitcode ("addc", "a,%s",
3987 aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE, FALSE));
3992 aopPut (AOP (IC_RESULT (ic)), "a", offset);
3996 emitcode ("push", "acc");
4000 _endLazyDPSEvaluation ();
4004 aopOp (IC_RESULT (ic), ic, TRUE, FALSE);
4006 size = getDataSize (IC_LEFT (ic));
4007 rSize = getDataSize (IC_RESULT (ic));
4009 ADJUST_PUSHED_RESULT(size, rSize);
4011 _startLazyDPSEvaluation ();
4014 emitcode ("pop", "acc");
4015 aopPut (AOP (IC_RESULT (ic)), "a", size);
4017 _endLazyDPSEvaluation ();
4020 adjustArithmeticResult (ic);
4023 freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
4024 freeAsmop (IC_RIGHT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
4025 freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
4028 /*-----------------------------------------------------------------*/
4029 /* genMinusDec :- does subtraction with deccrement if possible */
4030 /*-----------------------------------------------------------------*/
4032 genMinusDec (iCode * ic)
4034 unsigned int icount;
4035 unsigned int size = getDataSize (IC_RESULT (ic));
4037 /* will try to generate an increment */
4038 /* if the right side is not a literal
4040 if (AOP_TYPE (IC_RIGHT (ic)) != AOP_LIT)
4043 /* if the literal value of the right hand side
4044 is greater than 4 then it is not worth it */
4045 if ((icount = (unsigned int) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit)) > 4)
4048 if (size == 1 && AOP(IC_LEFT(ic)) == AOP(IC_RESULT(ic)) &&
4049 AOP_TYPE(IC_LEFT(ic)) == AOP_DIR ) {
4051 emitcode("dec","%s",aopGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE,FALSE));
4055 /* if decrement 16 bits in register */
4056 if (AOP_TYPE (IC_LEFT (ic)) == AOP_REG &&
4057 AOP_TYPE (IC_RESULT (ic)) == AOP_REG &&
4058 sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))) &&
4066 /* If the next instruction is a goto and the goto target
4067 * is <= 5 instructions previous to this, we can generate
4068 * jumps straight to that target.
4070 if (ic->next && ic->next->op == GOTO
4071 && (labelRange = findLabelBackwards (ic, IC_LABEL (ic->next)->key)) != 0
4074 emitcode (";", "tail decrement optimized (range %d)", labelRange);
4075 tlbl = IC_LABEL (ic->next);
4080 tlbl = newiTempLabel (NULL);
4084 emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE, FALSE));
4085 if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG ||
4086 AOP_TYPE (IC_RESULT (ic)) == AOP_DPTR ||
4087 IS_AOP_PREG (IC_RESULT (ic)))
4088 emitcode ("cjne", "%s,#!constbyte,!tlabel"
4089 ,aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE, FALSE), 0xff
4093 emitcode ("mov", "a,#!constbyte",0xff);
4094 emitcode ("cjne", "a,%s,!tlabel"
4095 ,aopGet (AOP (IC_RESULT (ic)), LSB, FALSE, FALSE, FALSE)
4098 emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE, FALSE));
4101 if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG ||
4102 AOP_TYPE (IC_RESULT (ic)) == AOP_DPTR ||
4103 IS_AOP_PREG (IC_RESULT (ic)))
4104 emitcode ("cjne", "%s,#!constbyte,!tlabel"
4105 ,aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE, FALSE),0xff
4109 emitcode ("cjne", "a,%s,!tlabel"
4110 ,aopGet (AOP (IC_RESULT (ic)), MSB16, FALSE, FALSE, FALSE)
4113 emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE, FALSE));
4117 if (AOP_TYPE (IC_RESULT (ic)) == AOP_REG ||
4118 AOP_TYPE (IC_RESULT (ic)) == AOP_DPTR ||
4119 IS_AOP_PREG (IC_RESULT (ic)))
4120 emitcode ("cjne", "%s,#!constbyte,!tlabel"
4121 ,aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE, FALSE),0xff
4125 emitcode ("cjne", "a,%s,!tlabel"
4126 ,aopGet (AOP (IC_RESULT (ic)), MSB24, FALSE, FALSE, FALSE)
4129 emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), MSB32, FALSE, FALSE, FALSE));
4133 emitcode ("", "!tlabeldef", tlbl->key + 100);
4138 /* if the sizes are greater than 1 then we cannot */
4139 if (AOP_SIZE (IC_RESULT (ic)) > 1 ||
4140 AOP_SIZE (IC_LEFT (ic)) > 1)
4143 /* we can if the aops of the left & result match or
4144 if they are in registers and the registers are the
4147 AOP_TYPE (IC_LEFT (ic)) == AOP_REG &&
4148 AOP_TYPE (IC_RESULT (ic)) == AOP_REG &&
4149 sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))))
4152 _startLazyDPSEvaluation ();
4155 emitcode ("dec", "%s", aopGet (AOP (IC_RESULT (ic)), 0, FALSE, FALSE, FALSE));
4157 _endLazyDPSEvaluation ();
4165 /*-----------------------------------------------------------------*/
4166 /* addSign - complete with sign */
4167 /*-----------------------------------------------------------------*/
4169 addSign (operand * result, int offset, int sign)
4171 int size = (getDataSize (result) - offset);
4174 _startLazyDPSEvaluation();
4177 emitcode ("rlc", "a");
4178 emitcode ("subb", "a,acc");
4181 aopPut (AOP (result), "a", offset++);
4188 aopPut (AOP (result), zero, offset++);
4191 _endLazyDPSEvaluation();
4195 /*-----------------------------------------------------------------*/
4196 /* genMinusBits - generates code for subtraction of two bits */
4197 /*-----------------------------------------------------------------*/
4199 genMinusBits (iCode * ic)
4201 symbol *lbl = newiTempLabel (NULL);
4203 D (emitcode (";", "genMinusBits "););
4205 if (AOP_TYPE (IC_RESULT (ic)) == AOP_CRY)
4207 emitcode ("mov", "c,%s", AOP (IC_LEFT (ic))->aopu.aop_dir);
4208 emitcode ("jnb", "%s,!tlabel", AOP (IC_RIGHT (ic))->aopu.aop_dir, (lbl->key + 100));
4209 emitcode ("cpl", "c");
4210 emitcode ("", "!tlabeldef", (lbl->key + 100));
4211 outBitC (IC_RESULT (ic));
4215 emitcode ("mov", "c,%s", AOP (IC_RIGHT (ic))->aopu.aop_dir);
4216 emitcode ("subb", "a,acc");
4217 emitcode ("jnb", "%s,!tlabel", AOP (IC_LEFT (ic))->aopu.aop_dir, (lbl->key + 100));
4218 emitcode ("inc", "a");
4219 emitcode ("", "!tlabeldef", (lbl->key + 100));
4220 aopPut (AOP (IC_RESULT (ic)), "a", 0);
4221 addSign (IC_RESULT (ic), MSB16, SPEC_USIGN (getSpec (operandType (IC_RESULT (ic)))));
4225 /*-----------------------------------------------------------------*/
4226 /* genMinus - generates code for subtraction */
4227 /*-----------------------------------------------------------------*/
4229 genMinus (iCode * ic)
4231 int size, offset = 0;
4233 unsigned long lit = 0L;
4234 bool pushResult = FALSE;
4236 D (emitcode (";", "genMinus "););
4238 aopOp (IC_LEFT (ic), ic, FALSE, FALSE);
4239 aopOp (IC_RIGHT (ic), ic, FALSE,
4240 (AOP_INDPTRn(IC_LEFT(ic)) ? FALSE : (AOP_USESDPTR(IC_LEFT(ic)) ? TRUE : FALSE)));
4241 if ((AOP_TYPE (IC_LEFT (ic)) == AOP_DPTR) &&
4242 ((AOP_TYPE (IC_RIGHT (ic)) == AOP_DPTR2)
4243 || OP_SYMBOL(IC_RESULT(ic))->ruonly))
4249 aopOp (IC_RESULT (ic), ic, TRUE, AOP_TYPE (IC_LEFT (ic)) == AOP_DPTR);
4251 /* special cases :- */
4252 /* if both left & right are in bit space */
4253 if (AOP_TYPE (IC_LEFT (ic)) == AOP_CRY &&
4254 AOP_TYPE (IC_RIGHT (ic)) == AOP_CRY)
4260 /* if I can do an decrement instead
4261 of subtract then GOOD for ME */
4262 if (genMinusDec (ic) == TRUE)
4267 size = getDataSize (pushResult ? IC_LEFT (ic) : IC_RESULT (ic));
4269 if (AOP_TYPE (IC_RIGHT (ic)) != AOP_LIT)
4275 lit = (unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit);
4280 /* if literal, add a,#-lit, else normal subb */
4281 _startLazyDPSEvaluation ();
4283 MOVA (aopGet (AOP (IC_LEFT (ic)), offset, FALSE, FALSE, TRUE));
4284 if (AOP_TYPE (IC_RIGHT (ic)) != AOP_LIT) {
4285 if (AOP_USESDPTR(IC_RIGHT(ic))) {
4286 emitcode ("mov","b,a");
4287 MOVA(aopGet (AOP (IC_RIGHT (ic)), offset, FALSE, FALSE, FALSE));
4288 emitcode ("xch","a,b");
4289 emitcode ("subb","a,b");
4291 emitcode ("subb", "a,%s",
4292 aopGet (AOP (IC_RIGHT (ic)), offset, FALSE, FALSE, FALSE));
4295 /* first add without previous c */
4297 if (!size && lit==-1) {
4298 emitcode ("dec", "a");
4300 emitcode ("add", "a,#!constbyte",
4301 (unsigned int) (lit & 0x0FFL));
4304 emitcode ("addc", "a,#!constbyte",
4305 (unsigned int) ((lit >> (offset * 8)) & 0x0FFL));
4310 emitcode ("push", "acc");
4312 aopPut (AOP (IC_RESULT (ic)), "a", offset);
4316 _endLazyDPSEvaluation ();
4320 aopOp (IC_RESULT (ic), ic, TRUE, FALSE);
4322 size = getDataSize (IC_LEFT (ic));
4323 rSize = getDataSize (IC_RESULT (ic));
4325 ADJUST_PUSHED_RESULT(size, rSize);
4327 _startLazyDPSEvaluation ();
4330 emitcode ("pop", "acc");
4331 aopPut (AOP (IC_RESULT (ic)), "a", size);
4333 _endLazyDPSEvaluation ();
4336 adjustArithmeticResult (ic);
4339 freeAsmop (IC_LEFT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
4340 freeAsmop (IC_RIGHT (ic), NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
4341 freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
4345 /*-----------------------------------------------------------------*/
4346 /* genMultbits :- multiplication of bits */
4347 /*-----------------------------------------------------------------*/
4349 genMultbits (operand * left,
4354 emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
4355 emitcode ("anl", "c,%s", AOP (right)->aopu.aop_dir);
4356 aopOp(result, ic, TRUE, FALSE);
4361 /*-----------------------------------------------------------------*/
4362 /* genMultOneByte : 8*8=8/16 bit multiplication */
4363 /*-----------------------------------------------------------------*/
4365 genMultOneByte (operand * left,
4370 sym_link *opetype = operandType (result);
4374 /* (if two literals: the value is computed before) */
4375 /* if one literal, literal on the right */
4376 if (AOP_TYPE (left) == AOP_LIT)
4381 emitcode (";", "swapped left and right");
4384 if (SPEC_USIGN(opetype)
4385 // ignore the sign of left and right, what else can we do?
4386 || (SPEC_USIGN(operandType(left)) &&
4387 SPEC_USIGN(operandType(right)))) {
4388 // just an unsigned 8*8=8/16 multiply
4389 //emitcode (";","unsigned");
4390 emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE, TRUE));
4391 MOVA (aopGet (AOP (left), 0, FALSE, FALSE, TRUE));
4392 emitcode ("mul", "ab");
4394 _G.accInUse++; _G.bInUse++;
4395 aopOp(result, ic, TRUE, FALSE);
4397 if (AOP_SIZE(result)<1 || AOP_SIZE(result)>2)
4399 // this should never happen
4400 fprintf (stderr, "size!=1||2 (%d) in %s at line:%d \n",
4401 AOP_SIZE(result), __FILE__, lineno);
4405 aopPut (AOP (result), "a", 0);
4406 _G.accInUse--; _G.bInUse--;
4407 if (AOP_SIZE(result)==2)
4409 aopPut (AOP (result), "b", 1);
4414 // we have to do a signed multiply
4416 emitcode (";", "signed");
4417 emitcode ("clr", "F0"); // reset sign flag
4418 MOVA (aopGet (AOP (left), 0, FALSE, FALSE, TRUE));
4420 lbl=newiTempLabel(NULL);
4421 emitcode ("jnb", "acc.7,!tlabel", lbl->key+100);
4422 // left side is negative, 8-bit two's complement, this fails for -128
4423 emitcode ("setb", "F0"); // set sign flag
4424 emitcode ("cpl", "a");
4425 emitcode ("inc", "a");
4427 emitcode ("", "!tlabeldef", lbl->key+100);
4430 if (AOP_TYPE(right)==AOP_LIT) {
4431 signed char val=floatFromVal (AOP (right)->aopu.aop_lit);
4432 /* AND literal negative */
4433 if ((int) val < 0) {
4434 emitcode ("cpl", "F0"); // complement sign flag
4435 emitcode ("mov", "b,#!constbyte", -val);
4437 emitcode ("mov", "b,#!constbyte", val);
4440 lbl=newiTempLabel(NULL);
4441 emitcode ("mov", "b,a");
4442 emitcode ("mov", "a,%s", aopGet (AOP (right), 0, FALSE, FALSE, TRUE));
4443 emitcode ("jnb", "acc.7,!tlabel", lbl->key+100);
4444 // right side is negative, 8-bit two's complement
4445 emitcode ("cpl", "F0"); // complement sign flag
4446 emitcode ("cpl", "a");
4447 emitcode ("inc", "a");
4448 emitcode ("", "!tlabeldef", lbl->key+100);
4450 emitcode ("mul", "ab");
4452 _G.accInUse++;_G.bInUse++;
4453 aopOp(result, ic, TRUE, FALSE);
4455 if (AOP_SIZE(result)<1 || AOP_SIZE(result)>2)
4457 // this should never happen
4458 fprintf (stderr, "size!=1||2 (%d) in %s at line:%d \n",
4459 AOP_SIZE(result), __FILE__, lineno);
4463 lbl=newiTempLabel(NULL);
4464 emitcode ("jnb", "F0,!tlabel", lbl->key+100);
4465 // only ONE op was negative, we have to do a 8/16-bit two's complement
4466 emitcode ("cpl", "a"); // lsb
4467 if (AOP_SIZE(result)==1) {
4468 emitcode ("inc", "a");
4470 emitcode ("add", "a,#1");
4471 emitcode ("xch", "a,b");
4472 emitcode ("cpl", "a"); // msb
4473 emitcode ("addc", "a,#0");
4474 emitcode ("xch", "a,b");
4477 emitcode ("", "!tlabeldef", lbl->key+100);
4478 aopPut (AOP (result), "a", 0);
4479 _G.accInUse--;_G.bInUse--;
4480 if (AOP_SIZE(result)==2) {
4481 aopPut (AOP (result), "b", 1);
4485 /*-----------------------------------------------------------------*/
4486 /* genMultTwoByte - use the DS390 MAC unit to do 16*16 multiply */
4487 /*-----------------------------------------------------------------*/
4488 static void genMultTwoByte (operand *left, operand *right,
4489 operand *result, iCode *ic)
4491 sym_link *retype = getSpec(operandType(right));
4492 sym_link *letype = getSpec(operandType(left));
4493 int umult = SPEC_USIGN(retype) | SPEC_USIGN(letype);
4496 if (AOP_TYPE (left) == AOP_LIT) {
4501 /* save EA bit in F1 */
4502 lbl = newiTempLabel(NULL);
4503 emitcode ("setb","F1");
4504 emitcode ("jbc","EA,!tlabel",lbl->key+100);
4505 emitcode ("clr","F1");
4506 emitcode("","!tlabeldef",lbl->key+100);
4508 /* load up MB with right */
4510 emitcode("clr","F0");
4511 if (AOP_TYPE(right) == AOP_LIT) {
4512 int val=floatFromVal (AOP (right)->aopu.aop_lit);
4514 emitcode("setb","F0");
4517 emitcode ("mov","mb,#!constbyte",val & 0xff);
4518 emitcode ("mov","mb,#!constbyte",(val >> 8) & 0xff);
4520 lbl = newiTempLabel(NULL);
4521 emitcode ("mov","b,%s",aopGet(AOP(right),0,FALSE,FALSE,TRUE));
4522 emitcode ("mov","a,%s",aopGet(AOP(right),1,FALSE,FALSE,TRUE));
4523 emitcode ("jnb","acc.7,!tlabel",lbl->key+100);
4524 emitcode ("xch", "a,b");
4525 emitcode ("cpl","a");
4526 emitcode ("add", "a,#1");
4527 emitcode ("xch", "a,b");
4528 emitcode ("cpl", "a"); // msb
4529 emitcode ("addc", "a,#0");
4530 emitcode ("setb","F0");
4531 emitcode ("","!tlabeldef",lbl->key+100);
4532 emitcode ("mov","mb,b");
4533 emitcode ("mov","mb,a");
4536 emitcode ("mov","mb,%s",aopGet(AOP(right),0,FALSE,FALSE,TRUE));
4537 emitcode ("mov","mb,%s",aopGet(AOP(right),1,FALSE,FALSE,TRUE));
4539 /* load up MA with left */
4541 lbl = newiTempLabel(NULL);
4542 emitcode ("mov","b,%s",aopGet(AOP(left),0,FALSE,FALSE,TRUE));
4543 emitcode ("mov","a,%s",aopGet(AOP(left),1,FALSE,FALSE,TRUE));
4544 emitcode ("jnb","acc.7,!tlabel",lbl->key+100);
4545 emitcode ("xch", "a,b");
4546 emitcode ("cpl","a");
4547 emitcode ("add", "a,#1");
4548 emitcode ("xch", "a,b");
4549 emitcode ("cpl", "a"); // msb
4550 emitcode ("addc","a,#0");
4551 emitcode ("jbc","F0,!tlabel",lbl->key+100);
4552 emitcode ("setb","F0");
4553 emitcode ("","!tlabeldef",lbl->key+100);
4554 emitcode ("mov","ma,b");
4555 emitcode ("mov","ma,a");
4557 emitcode ("mov","ma,%s",aopGet(AOP(left),0,FALSE,FALSE,TRUE));
4558 emitcode ("mov","ma,%s",aopGet(AOP(left),1,FALSE,FALSE,TRUE));
4560 /* wait for multiplication to finish */
4561 lbl = newiTempLabel(NULL);
4562 emitcode("","!tlabeldef", lbl->key+100);
4563 emitcode("mov","a,mcnt1");
4564 emitcode("anl","a,#!constbyte",0x80);
4565 emitcode("jnz","!tlabel",lbl->key+100);
4567 freeAsmop (left, NULL, ic, TRUE);
4568 freeAsmop (right, NULL, ic,TRUE);
4569 aopOp(result, ic, TRUE, FALSE);
4571 /* if unsigned then simple */
4573 emitcode ("mov","a,ma");
4574 if (AOP_SIZE(result) >= 4) aopPut(AOP(result),"a",3);
4575 emitcode ("mov","a,ma");
4576 if (AOP_SIZE(result) >= 3) aopPut(AOP(result),"a",2);
4577 aopPut(AOP(result),"ma",1);
4578 aopPut(AOP(result),"ma",0);
4580 emitcode("push","ma");
4581 emitcode("push","ma");
4582 emitcode("push","ma");
4584 /* negate result if needed */
4585 lbl = newiTempLabel(NULL);
4586 emitcode("jnb","F0,!tlabel",lbl->key+100);
4587 emitcode("cpl","a");
4588 emitcode("add","a,#1");
4589 emitcode("","!tlabeldef", lbl->key+100);
4590 if (AOP_TYPE(result) == AOP_ACC)
4592 D(emitcode(";", "ACC special case."););
4593 /* We know result is the only live aop, and
4594 * it's obviously not a DPTR2, so AP is available.
4596 emitcode("mov", "%s,acc", DP2_RESULT_REG);
4600 aopPut(AOP(result),"a",0);
4603 emitcode("pop","acc");
4604 lbl = newiTempLabel(NULL);
4605 emitcode("jnb","F0,!tlabel",lbl->key+100);
4606 emitcode("cpl","a");
4607 emitcode("addc","a,#0");
4608 emitcode("","!tlabeldef", lbl->key+100);
4609 aopPut(AOP(result),"a",1);
4610 emitcode("pop","acc");
4611 if (AOP_SIZE(result) >= 3) {
4612 lbl = newiTempLabel(NULL);
4613 emitcode("jnb","F0,!tlabel",lbl->key+100);
4614 emitcode("cpl","a");
4615 emitcode("addc","a,#0");
4616 emitcode("","!tlabeldef", lbl->key+100);
4617 aopPut(AOP(result),"a",2);
4619 emitcode("pop","acc");
4620 if (AOP_SIZE(result) >= 4) {
4621 lbl = newiTempLabel(NULL);
4622 emitcode("jnb","F0,!tlabel",lbl->key+100);
4623 emitcode("cpl","a");
4624 emitcode("addc","a,#0");
4625 emitcode("","!tlabeldef", lbl->key+100);
4626 aopPut(AOP(result),"a",3);
4628 if (AOP_TYPE(result) == AOP_ACC)
4630 /* We stashed the result away above. */
4631 emitcode("mov", "acc,%s", DP2_RESULT_REG);
4635 freeAsmop (result, NULL, ic, TRUE);
4637 /* restore EA bit in F1 */
4638 lbl = newiTempLabel(NULL);
4639 emitcode ("jnb","F1,!tlabel",lbl->key+100);
4640 emitcode ("setb","EA");
4641 emitcode("","!tlabeldef",lbl->key+100);
4645 /*-----------------------------------------------------------------*/
4646 /* genMult - generates code for multiplication */
4647 /*-----------------------------------------------------------------*/
4649 genMult (iCode * ic)
4651 operand *left = IC_LEFT (ic);
4652 operand *right = IC_RIGHT (ic);
4653 operand *result = IC_RESULT (ic);
4655 D (emitcode (";", "genMult "););
4657 /* assign the amsops */
4660 /* special cases first */
4662 if (AOP_TYPE (left) == AOP_CRY &&
4663 AOP_TYPE (right) == AOP_CRY)
4665 genMultbits (left, right, result, ic);
4669 /* if both are of size == 1 */
4670 if (AOP_SIZE (left) == 1 &&
4671 AOP_SIZE (right) == 1)
4673 genMultOneByte (left, right, result, ic);
4677 if (AOP_SIZE (left) == 2 && AOP_SIZE(right) == 2) {
4678 /* use the ds390 ARITHMETIC accel UNIT */
4679 genMultTwoByte (left, right, result, ic);
4682 /* should have been converted to function call */
4686 freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
4687 freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
4688 freeAsmop (result, NULL, ic, TRUE);
4691 /*-----------------------------------------------------------------*/
4692 /* genDivbits :- division of bits */
4693 /*-----------------------------------------------------------------*/
4695 genDivbits (operand * left,
4703 /* the result must be bit */
4704 LOAD_AB_FOR_DIV (left, right, l);
4705 emitcode ("div", "ab");
4706 emitcode ("rrc", "a");
4707 aopOp(result, ic, TRUE, FALSE);
4709 aopPut (AOP (result), "c", 0);
4712 /*-----------------------------------------------------------------*/
4713 /* genDivOneByte : 8 bit division */
4714 /*-----------------------------------------------------------------*/
4716 genDivOneByte (operand * left,
4721 sym_link *opetype = operandType (result);
4727 /* signed or unsigned */
4728 if (SPEC_USIGN (opetype))
4730 /* unsigned is easy */
4731 LOAD_AB_FOR_DIV (left, right, l);
4732 emitcode ("div", "ab");
4735 aopOp(result, ic, TRUE, FALSE);
4736 aopPut (AOP (result), "a", 0);
4739 size = AOP_SIZE (result) - 1;
4743 aopPut (AOP (result), zero, offset++);
4748 /* signed is a little bit more difficult */
4750 /* save the signs of the operands */
4751 l = aopGet (AOP (left), 0, FALSE, FALSE, TRUE);
4753 emitcode ("xrl", "a,%s", aopGet (AOP (right), 0, FALSE, TRUE, FALSE));
4754 emitcode ("push", "acc"); /* save it on the stack */
4756 /* now sign adjust for both left & right */
4757 l = aopGet (AOP (right), 0, FALSE, FALSE, TRUE);
4759 lbl = newiTempLabel (NULL);
4760 emitcode ("jnb", "acc.7,!tlabel", (lbl->key + 100));
4761 emitcode ("cpl", "a");
4762 emitcode ("inc", "a");
4763 emitcode ("", "!tlabeldef", (lbl->key + 100));
4764 emitcode ("mov", "b,a");
4766 /* sign adjust left side */
4767 l = aopGet (AOP (left), 0, FALSE, FALSE, TRUE);
4770 lbl = newiTempLabel (NULL);
4771 emitcode ("jnb", "acc.7,!tlabel", (lbl->key + 100));
4772 emitcode ("cpl", "a");
4773 emitcode ("inc", "a");
4774 emitcode ("", "!tlabeldef", (lbl->key + 100));
4776 /* now the division */
4777 emitcode ("nop", "; workaround for DS80C390 div bug.");
4778 emitcode ("div", "ab");
4779 /* we are interested in the lower order
4781 emitcode ("mov", "b,a");
4782 lbl = newiTempLabel (NULL);
4783 emitcode ("pop", "acc");
4784 /* if there was an over flow we don't
4785 adjust the sign of the result */
4786 emitcode ("jb", "ov,!tlabel", (lbl->key + 100));
4787 emitcode ("jnb", "acc.7,!tlabel", (lbl->key + 100));
4789 emitcode ("clr", "a");
4790 emitcode ("subb", "a,b");
4791 emitcode ("mov", "b,a");
4792 emitcode ("", "!tlabeldef", (lbl->key + 100));
4794 /* now we are done */
4795 _G.accInUse++; _G.bInUse++;
4796 aopOp(result, ic, TRUE, FALSE);
4798 aopPut (AOP (result), "b", 0);
4800 size = AOP_SIZE (result) - 1;
4804 emitcode ("mov", "c,b.7");
4805 emitcode ("subb", "a,acc");
4809 aopPut (AOP (result), "a", offset++);
4811 _G.accInUse--; _G.bInUse--;
4815 /*-----------------------------------------------------------------*/
4816 /* genDivTwoByte - use the DS390 MAC unit to do 16/16 divide */
4817 /*-----------------------------------------------------------------*/
4818 static void genDivTwoByte (operand *left, operand *right,
4819 operand *result, iCode *ic)
4821 sym_link *retype = getSpec(operandType(right));
4822 sym_link *letype = getSpec(operandType(left));
4823 int umult = SPEC_USIGN(retype) | SPEC_USIGN(letype);
4826 /* save EA bit in F1 */
4827 lbl = newiTempLabel(NULL);
4828 emitcode ("setb","F1");
4829 emitcode ("jbc","EA,!tlabel",lbl->key+100);
4830 emitcode ("clr","F1");
4831 emitcode("","!tlabeldef",lbl->key+100);
4833 /* load up MA with left */
4835 emitcode("clr","F0");
4836 lbl = newiTempLabel(NULL);
4837 emitcode ("mov","b,%s",aopGet(AOP(left),0,FALSE,FALSE,TRUE));
4838 emitcode ("mov","a,%s",aopGet(AOP(left),1,FALSE,FALSE,TRUE));
4839 emitcode ("jnb","acc.7,!tlabel",lbl->key+100);
4840 emitcode ("xch", "a,b");
4841 emitcode ("cpl","a");
4842 emitcode ("add", "a,#1");
4843 emitcode ("xch", "a,b");
4844 emitcode ("cpl", "a"); // msb
4845 emitcode ("addc","a,#0");
4846 emitcode ("setb","F0");
4847 emitcode ("","!tlabeldef",lbl->key+100);
4848 emitcode ("mov","ma,b");
4849 emitcode ("mov","ma,a");
4851 emitcode ("mov","ma,%s",aopGet(AOP(left),0,FALSE,FALSE,TRUE));
4852 emitcode ("mov","ma,%s",aopGet(AOP(left),1,FALSE,FALSE,TRUE));
4855 /* load up MB with right */
4857 if (AOP_TYPE(right) == AOP_LIT) {
4858 int val=floatFromVal (AOP (right)->aopu.aop_lit);
4860 lbl = newiTempLabel(NULL);
4861 emitcode ("jbc","F0,!tlabel",lbl->key+100);
4862 emitcode("setb","F0");
4863 emitcode ("","!tlabeldef",lbl->key+100);
4866 emitcode ("mov","mb,#!constbyte",val & 0xff);
4867 emitcode ("mov","mb,#!constbyte",(val >> 8) & 0xff);
4869 lbl = newiTempLabel(NULL);
4870 emitcode ("mov","b,%s",aopGet(AOP(right),0,FALSE,FALSE,TRUE));
4871 emitcode ("mov","a,%s",aopGet(AOP(right),1,FALSE,FALSE,TRUE));
4872 emitcode ("jnb","acc.7,!tlabel",lbl->key+100);
4873 emitcode ("xch", "a,b");
4874 emitcode ("cpl","a");
4875 emitcode ("add", "a,#1");
4876 emitcode ("xch", "a,b");
4877 emitcode ("cpl", "a"); // msb
4878 emitcode ("addc", "a,#0");
4879 emitcode ("jbc","F0,!tlabel",lbl->key+100);
4880 emitcode ("setb","F0");
4881 emitcode ("","!tlabeldef",lbl->key+100);
4882 emitcode ("mov","mb,b");
4883 emitcode ("mov","mb,a");
4886 emitcode ("mov","mb,%s",aopGet(AOP(right),0,FALSE,FALSE,TRUE));
4887 emitcode ("mov","mb,%s",aopGet(AOP(right),1,FALSE,FALSE,TRUE));
4890 /* wait for multiplication to finish */
4891 lbl = newiTempLabel(NULL);
4892 emitcode("","!tlabeldef", lbl->key+100);
4893 emitcode("mov","a,mcnt1");
4894 emitcode("anl","a,#!constbyte",0x80);
4895 emitcode("jnz","!tlabel",lbl->key+100);
4897 freeAsmop (left, NULL, ic, TRUE);
4898 freeAsmop (right, NULL, ic,TRUE);
4899 aopOp(result, ic, TRUE, FALSE);
4901 /* if unsigned then simple */
4903 aopPut(AOP(result),"ma",1);
4904 aopPut(AOP(result),"ma",0);
4906 emitcode("push","ma");
4908 /* negate result if needed */
4909 lbl = newiTempLabel(NULL);
4910 emitcode("jnb","F0,!tlabel",lbl->key+100);
4911 emitcode("cpl","a");
4912 emitcode("add","a,#1");
4913 emitcode("","!tlabeldef", lbl->key+100);
4914 aopPut(AOP(result),"a",0);
4915 emitcode("pop","acc");
4916 lbl = newiTempLabel(NULL);
4917 emitcode("jnb","F0,!tlabel",lbl->key+100);
4918 emitcode("cpl","a");
4919 emitcode("addc","a,#0");
4920 emitcode("","!tlabeldef", lbl->key+100);
4921 aopPut(AOP(result),"a",1);
4923 freeAsmop (result, NULL, ic, TRUE);
4924 /* restore EA bit in F1 */
4925 lbl = newiTempLabel(NULL);
4926 emitcode ("jnb","F1,!tlabel",lbl->key+100);
4927 emitcode ("setb","EA");
4928 emitcode("","!tlabeldef",lbl->key+100);
4932 /*-----------------------------------------------------------------*/
4933 /* genDiv - generates code for division */
4934 /*-----------------------------------------------------------------*/
4938 operand *left = IC_LEFT (ic);
4939 operand *right = IC_RIGHT (ic);
4940 operand *result = IC_RESULT (ic);
4942 D (emitcode (";", "genDiv "););
4944 /* assign the amsops */
4947 /* special cases first */
4949 if (AOP_TYPE (left) == AOP_CRY &&
4950 AOP_TYPE (right) == AOP_CRY)
4952 genDivbits (left, right, result, ic);
4956 /* if both are of size == 1 */
4957 if (AOP_SIZE (left) == 1 &&
4958 AOP_SIZE (right) == 1)
4960 genDivOneByte (left, right, result, ic);
4964 if (AOP_SIZE (left) == 2 && AOP_SIZE(right) == 2) {
4965 /* use the ds390 ARITHMETIC accel UNIT */
4966 genDivTwoByte (left, right, result, ic);
4969 /* should have been converted to function call */
4972 freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
4973 freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
4974 freeAsmop (result, NULL, ic, TRUE);
4977 /*-----------------------------------------------------------------*/
4978 /* genModbits :- modulus of bits */
4979 /*-----------------------------------------------------------------*/
4981 genModbits (operand * left,
4989 /* the result must be bit */
4990 LOAD_AB_FOR_DIV (left, right, l);
4991 emitcode ("div", "ab");
4992 emitcode ("mov", "a,b");
4993 emitcode ("rrc", "a");
4994 aopOp(result, ic, TRUE, FALSE);
4995 aopPut (AOP (result), "c", 0);
4998 /*-----------------------------------------------------------------*/
4999 /* genModOneByte : 8 bit modulus */
5000 /*-----------------------------------------------------------------*/
5002 genModOneByte (operand * left,
5007 sym_link *opetype = operandType (result);
5011 /* signed or unsigned */
5012 if (SPEC_USIGN (opetype))
5014 /* unsigned is easy */
5015 LOAD_AB_FOR_DIV (left, right, l);
5016 emitcode ("div", "ab");
5017 aopOp(result, ic, TRUE, FALSE);
5018 aopPut (AOP (result), "b", 0);
5022 /* signed is a little bit more difficult */
5024 /* save the signs of the operands */
5025 l = aopGet (AOP (left), 0, FALSE, FALSE, TRUE);
5028 emitcode ("xrl", "a,%s", aopGet (AOP (right), 0, FALSE, FALSE, FALSE));
5029 emitcode ("push", "acc"); /* save it on the stack */
5031 /* now sign adjust for both left & right */
5032 l = aopGet (AOP (right), 0, FALSE, FALSE, TRUE);
5035 lbl = newiTempLabel (NULL);
5036 emitcode ("jnb", "acc.7,!tlabel", (lbl->key + 100));
5037 emitcode ("cpl", "a");
5038 emitcode ("inc", "a");
5039 emitcode ("", "!tlabeldef", (lbl->key + 100));
5040 emitcode ("mov", "b,a");
5042 /* sign adjust left side */
5043 l = aopGet (AOP (left), 0, FALSE, FALSE, TRUE);
5046 lbl = newiTempLabel (NULL);
5047 emitcode ("jnb", "acc.7,!tlabel", (lbl->key + 100));
5048 emitcode ("cpl", "a");
5049 emitcode ("inc", "a");
5050 emitcode ("", "!tlabeldef", (lbl->key + 100));
5052 /* now the multiplication */
5053 emitcode ("nop", "; workaround for DS80C390 div bug.");
5054 emitcode ("div", "ab");
5055 /* we are interested in the lower order
5057 lbl = newiTempLabel (NULL);
5058 emitcode ("pop", "acc");
5059 /* if there was an over flow we don't
5060 adjust the sign of the result */
5061 emitcode ("jb", "ov,!tlabel", (lbl->key + 100));
5062 emitcode ("jnb", "acc.7,!tlabel", (lbl->key + 100));
5064 emitcode ("clr", "a");
5065 emitcode ("subb", "a,b");
5066 emitcode ("mov", "b,a");
5067 emitcode ("", "!tlabeldef", (lbl->key + 100));
5070 /* now we are done */
5071 aopOp(result, ic, TRUE, FALSE);
5072 aopPut (AOP (result), "b", 0);
5077 /*-----------------------------------------------------------------*/
5078 /* genModTwoByte - use the DS390 MAC unit to do 16%16 modulus */
5079 /*-----------------------------------------------------------------*/
5080 static void genModTwoByte (operand *left, operand *right,
5081 operand *result, iCode *ic)
5083 sym_link *retype = getSpec(operandType(right));
5084 sym_link *letype = getSpec(operandType(left));
5085 int umult = SPEC_USIGN(retype) | SPEC_USIGN(letype);
5088 /* load up MA with left */
5089 /* save EA bit in F1 */
5090 lbl = newiTempLabel(NULL);
5091 emitcode ("setb","F1");
5092 emitcode ("jbc","EA,!tlabel",lbl->key+100);
5093 emitcode ("clr","F1");
5094 emitcode("","!tlabeldef",lbl->key+100);
5097 lbl = newiTempLabel(NULL);
5098 emitcode ("mov","b,%s",aopGet(AOP(left),0,FALSE,FALSE,TRUE));
5099 emitcode ("mov","a,%s",aopGet(AOP(left),1,FALSE,FALSE,TRUE));
5100 emitcode ("jnb","acc.7,!tlabel",lbl->key+100);
5101 emitcode ("xch", "a,b");
5102 emitcode ("cpl","a");
5103 emitcode ("add", "a,#1");
5104 emitcode ("xch", "a,b");
5105 emitcode ("cpl", "a"); // msb
5106 emitcode ("addc","a,#0");
5107 emitcode ("","!tlabeldef",lbl->key+100);
5108 emitcode ("mov","ma,b");
5109 emitcode ("mov","ma,a");
5111 emitcode ("mov","ma,%s",aopGet(AOP(left),0,FALSE,FALSE,TRUE));
5112 emitcode ("mov","ma,%s",aopGet(AOP(left),1,FALSE,FALSE,TRUE));
5115 /* load up MB with right */
5117 if (AOP_TYPE(right) == AOP_LIT) {
5118 int val=floatFromVal (AOP (right)->aopu.aop_lit);
5122 emitcode ("mov","mb,#!constbyte",val & 0xff);
5123 emitcode ("mov","mb,#!constbyte",(val >> 8) & 0xff);
5125 lbl = newiTempLabel(NULL);
5126 emitcode ("mov","b,%s",aopGet(AOP(right),0,FALSE,FALSE,TRUE));
5127 emitcode ("mov","a,%s",aopGet(AOP(right),1,FALSE,FALSE,TRUE));
5128 emitcode ("jnb","acc.7,!tlabel",lbl->key+100);
5129 emitcode ("xch", "a,b");
5130 emitcode ("cpl","a");
5131 emitcode ("add", "a,#1");
5132 emitcode ("xch", "a,b");
5133 emitcode ("cpl", "a"); // msb
5134 emitcode ("addc", "a,#0");
5135 emitcode ("","!tlabeldef",lbl->key+100);
5136 emitcode ("mov","mb,b");
5137 emitcode ("mov","mb,a");
5140 emitcode ("mov","mb,%s",aopGet(AOP(right),0,FALSE,FALSE,TRUE));
5141 emitcode ("mov","mb,%s",aopGet(AOP(right),1,FALSE,FALSE,TRUE));
5144 /* wait for multiplication to finish */
5145 lbl = newiTempLabel(NULL);
5146 emitcode("","!tlabeldef", lbl->key+100);
5147 emitcode("mov","a,mcnt1");
5148 emitcode("anl","a,#!constbyte",0x80);
5149 emitcode("jnz","!tlabel",lbl->key+100);
5151 freeAsmop (left, NULL, ic, TRUE);
5152 freeAsmop (right, NULL, ic,TRUE);
5153 aopOp(result, ic, TRUE, FALSE);
5155 aopPut(AOP(result),"mb",1);
5156 aopPut(AOP(result),"mb",0);
5157 freeAsmop (result, NULL, ic, TRUE);
5159 /* restore EA bit in F1 */
5160 lbl = newiTempLabel(NULL);
5161 emitcode ("jnb","F1,!tlabel",lbl->key+100);
5162 emitcode ("setb","EA");
5163 emitcode("","!tlabeldef",lbl->key+100);
5167 /*-----------------------------------------------------------------*/
5168 /* genMod - generates code for division */
5169 /*-----------------------------------------------------------------*/
5173 operand *left = IC_LEFT (ic);
5174 operand *right = IC_RIGHT (ic);
5175 operand *result = IC_RESULT (ic);
5177 D (emitcode (";", "genMod "); );
5179 /* assign the amsops */
5182 /* special cases first */
5184 if (AOP_TYPE (left) == AOP_CRY &&
5185 AOP_TYPE (right) == AOP_CRY)
5187 genModbits (left, right, result, ic);
5191 /* if both are of size == 1 */
5192 if (AOP_SIZE (left) == 1 &&
5193 AOP_SIZE (right) == 1)
5195 genModOneByte (left, right, result, ic);
5199 if (AOP_SIZE (left) == 2 && AOP_SIZE(right) == 2) {
5200 /* use the ds390 ARITHMETIC accel UNIT */
5201 genModTwoByte (left, right, result, ic);
5205 /* should have been converted to function call */
5209 freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5210 freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5211 freeAsmop (result, NULL, ic, TRUE);
5214 /*-----------------------------------------------------------------*/
5215 /* genIfxJump :- will create a jump depending on the ifx */
5216 /*-----------------------------------------------------------------*/
5218 genIfxJump (iCode * ic, char *jval)
5221 symbol *tlbl = newiTempLabel (NULL);
5224 D (emitcode (";", "genIfxJump ");
5227 /* if true label then we jump if condition
5231 jlbl = IC_TRUE (ic);
5232 inst = ((strcmp (jval, "a") == 0 ? "jz" :
5233 (strcmp (jval, "c") == 0 ? "jnc" : "jnb")));
5237 /* false label is present */
5238 jlbl = IC_FALSE (ic);
5239 inst = ((strcmp (jval, "a") == 0 ? "jnz" :
5240 (strcmp (jval, "c") == 0 ? "jc" : "jb")));
5242 if (strcmp (inst, "jb") == 0 || strcmp (inst, "jnb") == 0)
5243 emitcode (inst, "%s,!tlabel", jval, (tlbl->key + 100));
5245 emitcode (inst, "!tlabel", tlbl->key + 100);
5246 emitcode ("ljmp", "!tlabel", jlbl->key + 100);
5247 emitcode ("", "!tlabeldef", tlbl->key + 100);
5249 /* mark the icode as generated */
5253 /*-----------------------------------------------------------------*/
5254 /* genCmp :- greater or less than comparison */
5255 /*-----------------------------------------------------------------*/
5257 genCmp (operand * left, operand * right,
5258 iCode * ic, iCode * ifx, int sign)
5260 int size, offset = 0;
5261 unsigned long lit = 0L;
5264 D (emitcode (";", "genCmp");
5267 result = IC_RESULT (ic);
5269 /* if left & right are bit variables */
5270 if (AOP_TYPE (left) == AOP_CRY &&
5271 AOP_TYPE (right) == AOP_CRY)
5273 emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
5274 emitcode ("anl", "c,/%s", AOP (left)->aopu.aop_dir);
5278 /* subtract right from left if at the
5279 end the carry flag is set then we know that
5280 left is greater than right */
5281 size = max (AOP_SIZE (left), AOP_SIZE (right));
5283 /* if unsigned char cmp with lit, do cjne left,#right,zz */
5284 if ((size == 1) && !sign &&
5285 (AOP_TYPE (right) == AOP_LIT && AOP_TYPE (left) != AOP_DIR && AOP_TYPE (left) != AOP_STR))
5287 symbol *lbl = newiTempLabel (NULL);
5288 emitcode ("cjne", "%s,%s,!tlabel",
5289 aopGet (AOP (left), offset, FALSE, FALSE, FALSE),
5290 aopGet (AOP (right), offset, FALSE, FALSE, FALSE),
5292 emitcode ("", "!tlabeldef", lbl->key + 100);
5296 if (AOP_TYPE (right) == AOP_LIT)
5298 lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit);
5299 /* optimize if(x < 0) or if(x >= 0) */
5308 MOVA (aopGet (AOP (left), AOP_SIZE (left) - 1, FALSE, FALSE, TRUE));
5310 freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5311 freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5313 aopOp (result, ic, FALSE, FALSE);
5315 if (!(AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result)) && ifx)
5317 freeAsmop (result, NULL, ic, TRUE);
5318 genIfxJump (ifx, "acc.7");
5323 emitcode ("rlc", "a");
5325 goto release_freedLR;
5333 //emitcode (";", "genCmp #1: %d/%d/%d", size, sign, offset);
5334 MOVA (aopGet (AOP (left), offset, FALSE, FALSE, TRUE));
5335 //emitcode (";", "genCmp #2");
5336 if (sign && (size == 0))
5338 //emitcode (";", "genCmp #3");
5339 emitcode ("xrl", "a,#!constbyte",0x80);
5340 if (AOP_TYPE (right) == AOP_LIT)
5342 unsigned long lit = (unsigned long)
5343 floatFromVal (AOP (right)->aopu.aop_lit);
5344 //emitcode (";", "genCmp #3.1");
5345 emitcode ("subb", "a,#!constbyte",
5346 0x80 ^ (unsigned int) ((lit >> (offset * 8)) & 0x0FFL));
5350 //emitcode (";", "genCmp #3.2");
5351 if (AOP_NEEDSACC (right))
5353 emitcode ("push", "acc");
5355 emitcode ("mov", "b,%s", aopGet (AOP (right), offset++,
5356 FALSE, FALSE, FALSE));
5357 emitcode ("xrl", "b,#!constbyte",0x80);
5358 if (AOP_NEEDSACC (right))
5360 emitcode ("pop", "acc");
5362 emitcode ("subb", "a,b");
5369 //emitcode (";", "genCmp #4");
5370 if (AOP_NEEDSACC (right))
5373 //emitcode (";", "genCmp #4.1");
5374 emitcode ("xch", "a, b");
5375 MOVA (aopGet (AOP (right), offset++, FALSE, FALSE, TRUE));
5376 emitcode ("xch", "a, b");
5381 //emitcode (";", "genCmp #4.2");
5382 s = aopGet (AOP (right), offset++, FALSE, FALSE, FALSE);
5385 emitcode ("subb", "a,%s", s);
5392 /* Don't need the left & right operands any more; do need the result. */
5393 freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5394 freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5396 aopOp (result, ic, FALSE, FALSE);
5400 if (AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result))
5406 /* if the result is used in the next
5407 ifx conditional branch then generate
5408 code a little differently */
5411 genIfxJump (ifx, "c");
5417 /* leave the result in acc */
5419 freeAsmop (result, NULL, ic, TRUE);
5422 /*-----------------------------------------------------------------*/
5423 /* genCmpGt :- greater than comparison */
5424 /*-----------------------------------------------------------------*/
5426 genCmpGt (iCode * ic, iCode * ifx)
5428 operand *left, *right;
5429 sym_link *letype, *retype;
5432 D (emitcode (";", "genCmpGt ");
5435 left = IC_LEFT (ic);
5436 right = IC_RIGHT (ic);
5438 letype = getSpec (operandType (left));
5439 retype = getSpec (operandType (right));
5440 sign = !(SPEC_USIGN (letype) | SPEC_USIGN (retype));
5442 /* assign the left & right amsops */
5445 genCmp (right, left, ic, ifx, sign);
5448 /*-----------------------------------------------------------------*/
5449 /* genCmpLt - less than comparisons */
5450 /*-----------------------------------------------------------------*/
5452 genCmpLt (iCode * ic, iCode * ifx)
5454 operand *left, *right;
5455 sym_link *letype, *retype;
5458 D (emitcode (";", "genCmpLt "););
5460 left = IC_LEFT (ic);
5461 right = IC_RIGHT (ic);
5463 letype = getSpec (operandType (left));
5464 retype = getSpec (operandType (right));
5465 sign = !(SPEC_USIGN (letype) | SPEC_USIGN (retype));
5467 /* assign the left & right amsops */
5470 genCmp (left, right, ic, ifx, sign);
5473 /*-----------------------------------------------------------------*/
5474 /* gencjneshort - compare and jump if not equal */
5475 /*-----------------------------------------------------------------*/
5477 gencjneshort (operand * left, operand * right, symbol * lbl)
5479 int size = max (AOP_SIZE (left), AOP_SIZE (right));
5481 unsigned long lit = 0L;
5483 D (emitcode (";", "gencjneshort");
5486 /* if the left side is a literal or
5487 if the right is in a pointer register and left
5489 if ((AOP_TYPE (left) == AOP_LIT) ||
5490 (IS_AOP_PREG (right) && !IS_AOP_PREG (left)))
5497 if (AOP_TYPE (right) == AOP_LIT)
5498 lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit);
5500 if (opIsGptr (left) || opIsGptr (right))
5502 /* We are comparing a generic pointer to something.
5503 * Exclude the generic type byte from the comparison.
5506 D (emitcode (";", "cjneshort: generic ptr special case.");
5511 /* if the right side is a literal then anything goes */
5512 if (AOP_TYPE (right) == AOP_LIT &&
5513 AOP_TYPE (left) != AOP_DIR)
5517 char *l = aopGet (AOP (left), offset, FALSE, FALSE, TRUE);
5519 emitcode ("cjne", "a,%s,!tlabel",
5520 aopGet (AOP (right), offset, FALSE, FALSE, FALSE),
5526 /* if the right side is in a register or in direct space or
5527 if the left is a pointer register & right is not */
5528 else if (AOP_TYPE (right) == AOP_REG ||
5529 AOP_TYPE (right) == AOP_DIR ||
5530 (AOP_TYPE (left) == AOP_DIR && AOP_TYPE (right) == AOP_LIT) ||
5531 (IS_AOP_PREG (left) && !IS_AOP_PREG (right)))
5535 MOVA (aopGet (AOP (left), offset, FALSE, FALSE, TRUE));
5536 if ((AOP_TYPE (left) == AOP_DIR && AOP_TYPE (right) == AOP_LIT) &&
5537 ((unsigned int) ((lit >> (offset * 8)) & 0x0FFL) == 0))
5538 emitcode ("jnz", "!tlabel", lbl->key + 100);
5540 emitcode ("cjne", "a,%s,!tlabel",
5541 aopGet (AOP (right), offset, FALSE, TRUE, FALSE),
5548 /* right is a pointer reg need both a & b */
5551 char *l = aopGet (AOP (left), offset, FALSE, FALSE, TRUE);
5552 if (strcmp (l, "b"))
5553 emitcode ("mov", "b,%s", l);
5554 MOVA (aopGet (AOP (right), offset, FALSE, FALSE, TRUE));
5555 emitcode ("cjne", "a,b,!tlabel", lbl->key + 100);
5561 /*-----------------------------------------------------------------*/
5562 /* gencjne - compare and jump if not equal */
5563 /*-----------------------------------------------------------------*/
5565 gencjne (operand * left, operand * right, symbol * lbl)
5567 symbol *tlbl = newiTempLabel (NULL);
5569 D (emitcode (";", "gencjne");
5572 gencjneshort (left, right, lbl);
5574 emitcode ("mov", "a,%s", one);
5575 emitcode ("sjmp", "!tlabel", tlbl->key + 100);
5576 emitcode ("", "!tlabeldef", lbl->key + 100);
5577 emitcode ("clr", "a");
5578 emitcode ("", "!tlabeldef", tlbl->key + 100);
5581 /*-----------------------------------------------------------------*/
5582 /* genCmpEq - generates code for equal to */
5583 /*-----------------------------------------------------------------*/
5585 genCmpEq (iCode * ic, iCode * ifx)
5587 operand *left, *right, *result;
5589 D (emitcode (";", "genCmpEq ");
5593 AOP_SET_LOCALS (ic);
5595 /* if literal, literal on the right or
5596 if the right is in a pointer register and left
5598 if ((AOP_TYPE (IC_LEFT (ic)) == AOP_LIT) ||
5599 (IS_AOP_PREG (right) && !IS_AOP_PREG (left)))
5601 operand *t = IC_RIGHT (ic);
5602 IC_RIGHT (ic) = IC_LEFT (ic);
5606 if (ifx && /* !AOP_SIZE(result) */
5607 OP_SYMBOL (result) &&
5608 OP_SYMBOL (result)->regType == REG_CND)
5611 /* if they are both bit variables */
5612 if (AOP_TYPE (left) == AOP_CRY &&
5613 ((AOP_TYPE (right) == AOP_CRY) || (AOP_TYPE (right) == AOP_LIT)))
5615 if (AOP_TYPE (right) == AOP_LIT)
5617 unsigned long lit = (unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit);
5620 emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
5621 emitcode ("cpl", "c");
5625 emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
5629 emitcode ("clr", "c");
5631 /* AOP_TYPE(right) == AOP_CRY */
5635 symbol *lbl = newiTempLabel (NULL);
5636 emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
5637 emitcode ("jb", "%s,!tlabel", AOP (right)->aopu.aop_dir, (lbl->key + 100));
5638 emitcode ("cpl", "c");
5639 emitcode ("", "!tlabeldef", (lbl->key + 100));
5641 /* if true label then we jump if condition
5643 tlbl = newiTempLabel (NULL);
5646 emitcode ("jnc", "!tlabel", tlbl->key + 100);
5647 emitcode ("ljmp", "!tlabel", IC_TRUE (ifx)->key + 100);
5651 emitcode ("jc", "!tlabel", tlbl->key + 100);
5652 emitcode ("ljmp", "!tlabel", IC_FALSE (ifx)->key + 100);
5654 emitcode ("", "!tlabeldef", tlbl->key + 100);
5658 tlbl = newiTempLabel (NULL);
5659 gencjneshort (left, right, tlbl);
5662 emitcode ("ljmp", "!tlabel", IC_TRUE (ifx)->key + 100);
5663 emitcode ("", "!tlabeldef", tlbl->key + 100);
5667 symbol *lbl = newiTempLabel (NULL);
5668 emitcode ("sjmp", "!tlabel", lbl->key + 100);
5669 emitcode ("", "!tlabeldef", tlbl->key + 100);
5670 emitcode ("ljmp", "!tlabel", IC_FALSE (ifx)->key + 100);
5671 emitcode ("", "!tlabeldef", lbl->key + 100);
5674 /* mark the icode as generated */
5677 freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5678 freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5682 /* if they are both bit variables */
5683 if (AOP_TYPE (left) == AOP_CRY &&
5684 ((AOP_TYPE (right) == AOP_CRY) || (AOP_TYPE (right) == AOP_LIT)))
5686 if (AOP_TYPE (right) == AOP_LIT)
5688 unsigned long lit = (unsigned long) floatFromVal (AOP (IC_RIGHT (ic))->aopu.aop_lit);
5691 emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
5692 emitcode ("cpl", "c");
5696 emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
5700 emitcode ("clr", "c");
5702 /* AOP_TYPE(right) == AOP_CRY */
5706 symbol *lbl = newiTempLabel (NULL);
5707 emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
5708 emitcode ("jb", "%s,!tlabel", AOP (right)->aopu.aop_dir, (lbl->key + 100));
5709 emitcode ("cpl", "c");
5710 emitcode ("", "!tlabeldef", (lbl->key + 100));
5713 freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5714 freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5716 aopOp (result, ic, TRUE, FALSE);
5719 if (AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result))
5726 genIfxJump (ifx, "c");
5729 /* if the result is used in an arithmetic operation
5730 then put the result in place */
5735 gencjne (left, right, newiTempLabel (NULL));
5737 freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5738 freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5740 aopOp (result, ic, TRUE, FALSE);
5742 if (AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result))
5744 aopPut (AOP (result), "a", 0);
5749 genIfxJump (ifx, "a");
5752 /* if the result is used in an arithmetic operation
5753 then put the result in place */
5754 if (AOP_TYPE (result) != AOP_CRY)
5756 /* leave the result in acc */
5760 freeAsmop (result, NULL, ic, TRUE);
5763 /*-----------------------------------------------------------------*/
5764 /* ifxForOp - returns the icode containing the ifx for operand */
5765 /*-----------------------------------------------------------------*/
5767 ifxForOp (operand * op, iCode * ic)
5769 /* if true symbol then needs to be assigned */
5770 if (IS_TRUE_SYMOP (op))
5773 /* if this has register type condition and
5774 the next instruction is ifx with the same operand
5775 and live to of the operand is upto the ifx only then */
5777 ic->next->op == IFX &&
5778 IC_COND (ic->next)->key == op->key &&
5779 OP_SYMBOL (op)->liveTo <= ic->next->seq)
5784 /*-----------------------------------------------------------------*/
5785 /* hasInc - operand is incremented before any other use */
5786 /*-----------------------------------------------------------------*/
5788 hasInc (operand *op, iCode *ic, int osize)
5790 sym_link *type = operandType(op);
5791 sym_link *retype = getSpec (type);
5792 iCode *lic = ic->next;
5795 /* this could from a cast, e.g.: "(char xdata *) 0x7654;" */
5796 if (!IS_SYMOP(op)) return NULL;
5798 if (IS_BITVAR(retype)||!IS_PTR(type)) return NULL;
5799 if (IS_AGGREGATE(type->next)) return NULL;
5800 if (osize != (isize = getSize(type->next))) return NULL;
5803 /* if operand of the form op = op + <sizeof *op> */
5804 if (lic->op == '+' && isOperandEqual(IC_LEFT(lic),op) &&
5805 isOperandEqual(IC_RESULT(lic),op) &&
5806 isOperandLiteral(IC_RIGHT(lic)) &&
5807 operandLitValue(IC_RIGHT(lic)) == isize) {
5810 /* if the operand used or deffed */
5811 if (bitVectBitValue(OP_USES(op),lic->key) || (unsigned) lic->defKey == op->key) {
5814 /* if GOTO or IFX */
5815 if (lic->op == IFX || lic->op == GOTO || lic->op == LABEL) break;
5821 /*-----------------------------------------------------------------*/
5822 /* genAndOp - for && operation */
5823 /*-----------------------------------------------------------------*/
5825 genAndOp (iCode * ic)
5827 operand *left, *right, *result;
5830 D (emitcode (";", "genAndOp "););
5832 /* note here that && operations that are in an
5833 if statement are taken away by backPatchLabels
5834 only those used in arthmetic operations remain */
5836 AOP_SET_LOCALS (ic);
5838 /* if both are bit variables */
5839 if (AOP_TYPE (left) == AOP_CRY &&
5840 AOP_TYPE (right) == AOP_CRY)
5842 emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
5843 emitcode ("anl", "c,%s", AOP (right)->aopu.aop_dir);
5844 freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5845 freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5847 aopOp (result,ic,FALSE, FALSE);
5852 tlbl = newiTempLabel (NULL);
5854 emitcode ("jz", "!tlabel", tlbl->key + 100);
5856 emitcode ("", "!tlabeldef", tlbl->key + 100);
5857 freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5858 freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5860 aopOp (result,ic,FALSE, FALSE);
5863 freeAsmop (result, NULL, ic, TRUE);
5867 /*-----------------------------------------------------------------*/
5868 /* genOrOp - for || operation */
5869 /*-----------------------------------------------------------------*/
5871 genOrOp (iCode * ic)
5873 operand *left, *right, *result;
5876 D (emitcode (";", "genOrOp "););
5878 /* note here that || operations that are in an
5879 if statement are taken away by backPatchLabels
5880 only those used in arthmetic operations remain */
5882 AOP_SET_LOCALS (ic);
5884 /* if both are bit variables */
5885 if (AOP_TYPE (left) == AOP_CRY &&
5886 AOP_TYPE (right) == AOP_CRY)
5888 emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
5889 emitcode ("orl", "c,%s", AOP (right)->aopu.aop_dir);
5890 freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5891 freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5893 aopOp (result,ic,FALSE, FALSE);
5899 tlbl = newiTempLabel (NULL);
5901 emitcode ("jnz", "!tlabel", tlbl->key + 100);
5903 emitcode ("", "!tlabeldef", tlbl->key + 100);
5904 freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5905 freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
5907 aopOp (result,ic,FALSE, FALSE);
5912 freeAsmop (result, NULL, ic, TRUE);
5915 /*-----------------------------------------------------------------*/
5916 /* isLiteralBit - test if lit == 2^n */
5917 /*-----------------------------------------------------------------*/
5919 isLiteralBit (unsigned long lit)
5921 unsigned long pw[32] =
5922 {1L, 2L, 4L, 8L, 16L, 32L, 64L, 128L,
5923 0x100L, 0x200L, 0x400L, 0x800L,
5924 0x1000L, 0x2000L, 0x4000L, 0x8000L,
5925 0x10000L, 0x20000L, 0x40000L, 0x80000L,
5926 0x100000L, 0x200000L, 0x400000L, 0x800000L,
5927 0x1000000L, 0x2000000L, 0x4000000L, 0x8000000L,
5928 0x10000000L, 0x20000000L, 0x40000000L, 0x80000000L};
5931 for (idx = 0; idx < 32; idx++)
5937 /*-----------------------------------------------------------------*/
5938 /* continueIfTrue - */
5939 /*-----------------------------------------------------------------*/
5941 continueIfTrue (iCode * ic)
5944 emitcode ("ljmp", "!tlabel", IC_TRUE (ic)->key + 100);
5948 /*-----------------------------------------------------------------*/
5950 /*-----------------------------------------------------------------*/
5952 jumpIfTrue (iCode * ic)
5955 emitcode ("ljmp", "!tlabel", IC_FALSE (ic)->key + 100);
5959 /*-----------------------------------------------------------------*/
5960 /* jmpTrueOrFalse - */
5961 /*-----------------------------------------------------------------*/
5963 jmpTrueOrFalse (iCode * ic, symbol * tlbl)
5965 // ugly but optimized by peephole
5968 symbol *nlbl = newiTempLabel (NULL);
5969 emitcode ("sjmp", "!tlabel", nlbl->key + 100);
5970 emitcode ("", "!tlabeldef", tlbl->key + 100);
5971 emitcode ("ljmp", "!tlabel", IC_TRUE (ic)->key + 100);
5972 emitcode ("", "!tlabeldef", nlbl->key + 100);
5976 emitcode ("ljmp", "!tlabel", IC_FALSE (ic)->key + 100);
5977 emitcode ("", "!tlabeldef", tlbl->key + 100);
5982 // Generate code to perform a bit-wise logic operation
5983 // on two operands in far space (assumed to already have been
5984 // aopOp'd by the AOP_OP_3_NOFATAL macro), storing the result
5985 // in far space. This requires pushing the result on the stack
5986 // then popping it into the result.
5988 genFarFarLogicOp(iCode *ic, char *logicOp)
5990 int size, resultSize, compSize;
5994 D(emitcode(";", "%s special case for 3 far operands.", logicOp););
5995 compSize = AOP_SIZE(IC_LEFT(ic)) < AOP_SIZE(IC_RIGHT(ic)) ?
5996 AOP_SIZE(IC_LEFT(ic)) : AOP_SIZE(IC_RIGHT(ic));
5998 _startLazyDPSEvaluation();
5999 for (size = compSize; (size--); offset++)
6001 MOVA (aopGet (AOP (IC_LEFT(ic)), offset, FALSE, FALSE, TRUE));
6002 emitcode ("mov", "%s, acc", DP2_RESULT_REG);
6003 MOVA (aopGet (AOP (IC_RIGHT(ic)), offset, FALSE, FALSE, TRUE));
6005 emitcode (logicOp, "a,%s", DP2_RESULT_REG);
6006 emitcode ("push", "acc");
6008 _endLazyDPSEvaluation();
6010 freeAsmop (IC_LEFT(ic), NULL, ic, RESULTONSTACK (ic) ? FALSE : TRUE);
6011 freeAsmop (IC_RIGHT(ic), NULL, ic, RESULTONSTACK (ic) ? FALSE : TRUE);
6012 aopOp (IC_RESULT(ic),ic,TRUE, FALSE);
6014 resultSize = AOP_SIZE(IC_RESULT(ic));
6016 ADJUST_PUSHED_RESULT(compSize, resultSize);
6018 _startLazyDPSEvaluation();
6021 emitcode ("pop", "acc");
6022 aopPut (AOP (IC_RESULT (ic)), "a", compSize);
6024 _endLazyDPSEvaluation();
6025 freeAsmop(IC_RESULT (ic), NULL, ic, TRUE);
6029 /*-----------------------------------------------------------------*/
6030 /* genAnd - code for and */
6031 /*-----------------------------------------------------------------*/
6033 genAnd (iCode * ic, iCode * ifx)
6035 operand *left, *right, *result;
6036 int size, offset = 0;
6037 unsigned long lit = 0L;
6042 D (emitcode (";", "genAnd "););
6044 AOP_OP_3_NOFATAL (ic, pushResult);
6045 AOP_SET_LOCALS (ic);
6049 genFarFarLogicOp(ic, "anl");
6054 emitcode ("", "; Type res[%d] = l[%d]&r[%d]",
6056 AOP_TYPE (left), AOP_TYPE (right));
6057 emitcode ("", "; Size res[%d] = l[%d]&r[%d]",
6059 AOP_SIZE (left), AOP_SIZE (right));
6062 /* if left is a literal & right is not then exchange them */
6063 if ((AOP_TYPE (left) == AOP_LIT && AOP_TYPE (right) != AOP_LIT)
6064 #ifdef LOGIC_OPS_BROKEN
6065 || AOP_NEEDSACC (left)
6069 operand *tmp = right;
6074 /* if result = right then exchange them */
6075 if (sameRegs (AOP (result), AOP (right)))
6077 operand *tmp = right;
6082 /* if right is bit then exchange them */
6083 if (AOP_TYPE (right) == AOP_CRY &&
6084 AOP_TYPE (left) != AOP_CRY)
6086 operand *tmp = right;
6090 if (AOP_TYPE (right) == AOP_LIT)
6091 lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit);
6093 size = AOP_SIZE (result);
6096 // result = bit & yy;
6097 if (AOP_TYPE (left) == AOP_CRY)
6099 // c = bit & literal;
6100 if (AOP_TYPE (right) == AOP_LIT)
6104 if (size && sameRegs (AOP (result), AOP (left)))
6107 emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
6112 if (size && (AOP_TYPE (result) == AOP_CRY))
6114 emitcode ("clr", "%s", AOP (result)->aopu.aop_dir);
6117 if ((AOP_TYPE (result) == AOP_CRY) && ifx)
6122 emitcode ("clr", "c");
6127 if (AOP_TYPE (right) == AOP_CRY)
6130 emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
6131 emitcode ("anl", "c,%s", AOP (left)->aopu.aop_dir);
6136 MOVA (aopGet (AOP (right), 0, FALSE, FALSE, TRUE));
6138 emitcode ("rrc", "a");
6139 emitcode ("anl", "c,%s", AOP (left)->aopu.aop_dir);
6147 else if ((AOP_TYPE (result) == AOP_CRY) && ifx)
6148 genIfxJump (ifx, "c");
6152 // if(val & 0xZZ) - size = 0, ifx != FALSE -
6153 // bit = val & 0xZZ - size = 1, ifx = FALSE -
6154 if ((AOP_TYPE (right) == AOP_LIT) &&
6155 (AOP_TYPE (result) == AOP_CRY) &&
6156 (AOP_TYPE (left) != AOP_CRY))
6158 int posbit = isLiteralBit (lit);
6163 MOVA (aopGet (AOP (left), posbit >> 3, FALSE, FALSE, TRUE));
6166 emitcode ("mov", "c,acc.%d", posbit & 0x07);
6172 sprintf (buffer, "acc.%d", posbit & 0x07);
6173 genIfxJump (ifx, buffer);
6177 emitcode ("anl","a,#!constbyte",1 << (posbit & 0x07));
6184 symbol *tlbl = newiTempLabel (NULL);
6185 int sizel = AOP_SIZE (left);
6187 emitcode ("setb", "c");
6190 if ((bytelit = ((lit >> (offset * 8)) & 0x0FFL)) != 0x0L)
6192 MOVA (aopGet (AOP (left), offset, FALSE, FALSE, TRUE));
6194 if ((posbit = isLiteralBit (bytelit)) != 0)
6195 emitcode ("jb", "acc.%d,!tlabel", (posbit - 1) & 0x07, tlbl->key + 100);
6198 if (bytelit != 0x0FFL)
6199 emitcode ("anl", "a,%s",
6200 aopGet (AOP (right), offset, FALSE, TRUE, FALSE));
6201 emitcode ("jnz", "!tlabel", tlbl->key + 100);
6206 // bit = left & literal
6209 emitcode ("clr", "c");
6210 emitcode ("", "!tlabeldef", tlbl->key + 100);
6212 // if(left & literal)
6216 jmpTrueOrFalse (ifx, tlbl);
6224 /* if left is same as result */
6225 if (sameRegs (AOP (result), AOP (left)))
6227 for (; size--; offset++)
6229 if (AOP_TYPE (right) == AOP_LIT)
6231 if ((bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL)) == 0x0FF)
6233 else if (bytelit == 0)
6234 aopPut (AOP (result), zero, offset);
6235 else if (IS_AOP_PREG (result))
6237 MOVA (aopGet (AOP (right), offset, FALSE, FALSE, TRUE));
6238 emitcode ("anl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE, FALSE));
6239 aopPut (AOP (result), "a", offset);
6242 emitcode ("anl", "%s,%s",
6243 aopGet (AOP (left), offset, FALSE, TRUE, FALSE),
6244 aopGet (AOP (right), offset, FALSE, FALSE, FALSE));
6248 if (AOP_TYPE (left) == AOP_ACC)
6249 emitcode ("anl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE, FALSE));
6252 MOVA (aopGet (AOP (right), offset, FALSE, FALSE, TRUE));
6253 if (IS_AOP_PREG (result))
6255 emitcode ("anl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE, FALSE));
6256 aopPut (AOP (result), "a", offset);
6260 emitcode ("anl", "%s,a",
6261 aopGet (AOP (left), offset, FALSE, TRUE, FALSE));
6268 // left & result in different registers
6269 if (AOP_TYPE (result) == AOP_CRY)
6272 // if(size), result in bit
6273 // if(!size && ifx), conditional oper: if(left & right)
6274 symbol *tlbl = newiTempLabel (NULL);
6275 int sizer = min (AOP_SIZE (left), AOP_SIZE (right));
6277 emitcode ("setb", "c");
6280 if (AOP_TYPE(right)==AOP_REG && AOP_TYPE(left)==AOP_ACC) {
6281 emitcode ("anl", "a,%s",
6282 aopGet (AOP (right), offset, FALSE, FALSE, FALSE));
6284 if (AOP_TYPE(left)==AOP_ACC) {
6285 emitcode("mov", "b,a");
6286 MOVA (aopGet (AOP (right), offset, FALSE, FALSE, TRUE));
6287 emitcode("anl", "a,b");
6289 MOVA (aopGet (AOP (right), offset, FALSE, FALSE, TRUE));
6290 emitcode ("anl", "a,%s",
6291 aopGet (AOP (left), offset, FALSE, FALSE, FALSE));
6294 emitcode ("jnz", "!tlabel", tlbl->key + 100);
6300 emitcode ("", "!tlabeldef", tlbl->key + 100);
6304 jmpTrueOrFalse (ifx, tlbl);
6308 for (; (size--); offset++)
6311 // result = left & right
6312 if (AOP_TYPE (right) == AOP_LIT)
6314 if ((bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL)) == 0x0FF)
6316 aopPut (AOP (result),
6317 aopGet (AOP (left), offset, FALSE, FALSE, FALSE),
6321 else if (bytelit == 0)
6323 aopPut (AOP (result), zero, offset);
6326 D (emitcode (";", "better literal AND."););
6327 MOVA (aopGet (AOP (left), offset, FALSE, FALSE, TRUE));
6328 emitcode ("anl", "a, %s", aopGet (AOP (right), offset,
6329 FALSE, FALSE, FALSE));
6334 // faster than result <- left, anl result,right
6335 // and better if result is SFR
6336 if (AOP_TYPE (left) == AOP_ACC)
6338 emitcode ("anl", "a,%s", aopGet (AOP (right), offset,
6339 FALSE, FALSE, FALSE));
6343 char *rOp = aopGet (AOP (right), offset, FALSE, FALSE, TRUE);
6344 if (!strcmp(rOp, "a") || !strcmp(rOp, "acc"))
6346 emitcode("mov", "b,a");
6350 MOVA (aopGet (AOP (left), offset, FALSE, FALSE, TRUE));
6351 emitcode ("anl", "a,%s", rOp);
6354 aopPut (AOP (result), "a", offset);
6360 freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
6361 freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
6362 freeAsmop (result, NULL, ic, TRUE);
6366 /*-----------------------------------------------------------------*/
6367 /* genOr - code for or */
6368 /*-----------------------------------------------------------------*/
6370 genOr (iCode * ic, iCode * ifx)
6372 operand *left, *right, *result;
6373 int size, offset = 0;
6374 unsigned long lit = 0L;
6377 D (emitcode (";", "genOr "););
6379 AOP_OP_3_NOFATAL (ic, pushResult);
6380 AOP_SET_LOCALS (ic);
6384 genFarFarLogicOp(ic, "orl");
6390 emitcode ("", "; Type res[%d] = l[%d]&r[%d]",
6392 AOP_TYPE (left), AOP_TYPE (right));
6393 emitcode ("", "; Size res[%d] = l[%d]&r[%d]",
6395 AOP_SIZE (left), AOP_SIZE (right));
6398 /* if left is a literal & right is not then exchange them */
6399 if ((AOP_TYPE (left) == AOP_LIT && AOP_TYPE (right) != AOP_LIT)
6400 #ifdef LOGIC_OPS_BROKEN
6401 || AOP_NEEDSACC (left) // I think this is a net loss now.
6405 operand *tmp = right;
6410 /* if result = right then exchange them */
6411 if (sameRegs (AOP (result), AOP (right)))
6413 operand *tmp = right;
6418 /* if right is bit then exchange them */
6419 if (AOP_TYPE (right) == AOP_CRY &&
6420 AOP_TYPE (left) != AOP_CRY)
6422 operand *tmp = right;
6426 if (AOP_TYPE (right) == AOP_LIT)
6427 lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit);
6429 size = AOP_SIZE (result);
6433 if (AOP_TYPE (left) == AOP_CRY)
6435 if (AOP_TYPE (right) == AOP_LIT)
6437 // c = bit & literal;
6440 // lit != 0 => result = 1
6441 if (AOP_TYPE (result) == AOP_CRY)
6444 emitcode ("setb", "%s", AOP (result)->aopu.aop_dir);
6446 continueIfTrue (ifx);
6449 emitcode ("setb", "c");
6453 // lit == 0 => result = left
6454 if (size && sameRegs (AOP (result), AOP (left)))
6456 emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
6461 if (AOP_TYPE (right) == AOP_CRY)
6464 emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
6465 emitcode ("orl", "c,%s", AOP (left)->aopu.aop_dir);
6470 symbol *tlbl = newiTempLabel (NULL);
6471 if (!((AOP_TYPE (result) == AOP_CRY) && ifx))
6472 emitcode ("setb", "c");
6473 emitcode ("jb", "%s,!tlabel",
6474 AOP (left)->aopu.aop_dir, tlbl->key + 100);
6476 emitcode ("jnz", "!tlabel", tlbl->key + 100);
6477 if ((AOP_TYPE (result) == AOP_CRY) && ifx)
6479 jmpTrueOrFalse (ifx, tlbl);
6485 emitcode ("", "!tlabeldef", tlbl->key + 100);
6494 else if ((AOP_TYPE (result) == AOP_CRY) && ifx)
6495 genIfxJump (ifx, "c");
6499 // if(val | 0xZZ) - size = 0, ifx != FALSE -
6500 // bit = val | 0xZZ - size = 1, ifx = FALSE -
6501 if ((AOP_TYPE (right) == AOP_LIT) &&
6502 (AOP_TYPE (result) == AOP_CRY) &&
6503 (AOP_TYPE (left) != AOP_CRY))
6509 emitcode ("setb", "%s", AOP (result)->aopu.aop_dir);
6511 continueIfTrue (ifx);
6516 // lit = 0, result = boolean(left)
6518 emitcode ("setb", "c");
6522 symbol *tlbl = newiTempLabel (NULL);
6523 emitcode ("jnz", "!tlabel", tlbl->key + 100);
6525 emitcode ("", "!tlabeldef", tlbl->key + 100);
6529 genIfxJump (ifx, "a");
6537 /* if left is same as result */
6538 if (sameRegs (AOP (result), AOP (left)))
6540 for (; size--; offset++)
6542 if (AOP_TYPE (right) == AOP_LIT)
6544 if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)
6550 if (IS_AOP_PREG (left))
6552 MOVA (aopGet (AOP (right), offset, FALSE, FALSE, TRUE));
6553 emitcode ("orl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE, FALSE));
6554 aopPut (AOP (result), "a", offset);
6558 emitcode ("orl", "%s,%s",
6559 aopGet (AOP (left), offset, FALSE, TRUE, FALSE),
6560 aopGet (AOP (right), offset, FALSE, FALSE, FALSE));
6566 if (AOP_TYPE (left) == AOP_ACC)
6568 emitcode ("orl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE, FALSE));
6572 MOVA (aopGet (AOP (right), offset, FALSE, FALSE, TRUE));
6573 if (IS_AOP_PREG (left))
6575 emitcode ("orl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE, FALSE));
6576 aopPut (AOP (result), "a", offset);
6580 emitcode ("orl", "%s,a",
6581 aopGet (AOP (left), offset, FALSE, TRUE, FALSE));
6589 // left & result in different registers
6590 if (AOP_TYPE (result) == AOP_CRY)
6593 // if(size), result in bit
6594 // if(!size && ifx), conditional oper: if(left | right)
6595 symbol *tlbl = newiTempLabel (NULL);
6596 int sizer = max (AOP_SIZE (left), AOP_SIZE (right));
6598 emitcode ("setb", "c");
6601 if (AOP_TYPE(right)==AOP_REG && AOP_TYPE(left)==AOP_ACC) {
6602 emitcode ("orl", "a,%s",
6603 aopGet (AOP (right), offset, FALSE, FALSE, FALSE));
6605 MOVA (aopGet (AOP (right), offset, FALSE, FALSE, TRUE));
6606 emitcode ("orl", "a,%s",
6607 aopGet (AOP (left), offset, FALSE, FALSE, FALSE));
6609 emitcode ("jnz", "!tlabel", tlbl->key + 100);
6615 emitcode ("", "!tlabeldef", tlbl->key + 100);
6619 jmpTrueOrFalse (ifx, tlbl);
6623 _startLazyDPSEvaluation();
6624 for (; (size--); offset++)
6627 // result = left & right
6628 if (AOP_TYPE (right) == AOP_LIT)
6630 if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)
6632 aopPut (AOP (result),
6633 aopGet (AOP (left), offset, FALSE, FALSE, FALSE),
6637 D (emitcode (";", "better literal OR."););
6638 MOVA (aopGet (AOP (left), offset, FALSE, FALSE, TRUE));
6639 emitcode ("orl", "a, %s", aopGet (AOP (right), offset,
6640 FALSE, FALSE, FALSE));
6645 // faster than result <- left, anl result,right
6646 // and better if result is SFR
6647 if (AOP_TYPE (left) == AOP_ACC)
6649 emitcode ("orl", "a,%s", aopGet (AOP (right), offset,
6650 FALSE, FALSE, FALSE));
6654 char *rOp = aopGet (AOP (right), offset, FALSE, FALSE, TRUE);
6656 if (!strcmp(rOp, "a") || !strcmp(rOp, "acc"))
6658 emitcode("mov", "b,a");
6662 MOVA (aopGet (AOP (left), offset, FALSE, FALSE, TRUE));
6663 emitcode ("orl", "a,%s", rOp);
6666 aopPut (AOP (result), "a", offset);
6668 _endLazyDPSEvaluation();
6673 freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
6674 freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
6675 freeAsmop (result, NULL, ic, TRUE);
6678 /*-----------------------------------------------------------------*/
6679 /* genXor - code for xclusive or */
6680 /*-----------------------------------------------------------------*/
6682 genXor (iCode * ic, iCode * ifx)
6684 operand *left, *right, *result;
6685 int size, offset = 0;
6686 unsigned long lit = 0L;
6689 D (emitcode (";", "genXor "););
6691 AOP_OP_3_NOFATAL (ic, pushResult);
6692 AOP_SET_LOCALS (ic);
6696 genFarFarLogicOp(ic, "xrl");
6701 emitcode ("", "; Type res[%d] = l[%d]&r[%d]",
6703 AOP_TYPE (left), AOP_TYPE (right));
6704 emitcode ("", "; Size res[%d] = l[%d]&r[%d]",
6706 AOP_SIZE (left), AOP_SIZE (right));
6709 /* if left is a literal & right is not ||
6710 if left needs acc & right does not */
6711 if ((AOP_TYPE (left) == AOP_LIT && AOP_TYPE (right) != AOP_LIT)
6712 #ifdef LOGIC_OPS_BROKEN
6713 || (AOP_NEEDSACC (left) && !AOP_NEEDSACC (right))
6717 operand *tmp = right;
6722 /* if result = right then exchange them */
6723 if (sameRegs (AOP (result), AOP (right)))
6725 operand *tmp = right;
6730 /* if right is bit then exchange them */
6731 if (AOP_TYPE (right) == AOP_CRY &&
6732 AOP_TYPE (left) != AOP_CRY)
6734 operand *tmp = right;
6738 if (AOP_TYPE (right) == AOP_LIT)
6739 lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit);
6741 size = AOP_SIZE (result);
6745 if (AOP_TYPE (left) == AOP_CRY)
6747 if (AOP_TYPE (right) == AOP_LIT)
6749 // c = bit & literal;
6752 // lit>>1 != 0 => result = 1
6753 if (AOP_TYPE (result) == AOP_CRY)
6756 emitcode ("setb", "%s", AOP (result)->aopu.aop_dir);
6758 continueIfTrue (ifx);
6761 emitcode ("setb", "c");
6768 // lit == 0, result = left
6769 if (size && sameRegs (AOP (result), AOP (left)))
6771 emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
6775 // lit == 1, result = not(left)
6776 if (size && sameRegs (AOP (result), AOP (left)))
6778 emitcode ("cpl", "%s", AOP (result)->aopu.aop_dir);
6783 emitcode ("mov", "c,%s", AOP (left)->aopu.aop_dir);
6784 emitcode ("cpl", "c");
6793 symbol *tlbl = newiTempLabel (NULL);
6794 if (AOP_TYPE (right) == AOP_CRY)
6797 emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
6801 int sizer = AOP_SIZE (right);
6803 // if val>>1 != 0, result = 1
6804 emitcode ("setb", "c");
6807 MOVA (aopGet (AOP (right), sizer - 1, FALSE, FALSE, TRUE));
6809 // test the msb of the lsb
6810 emitcode ("anl", "a,#!constbyte",0xfe);
6811 emitcode ("jnz", "!tlabel", tlbl->key + 100);
6815 emitcode ("rrc", "a");
6817 emitcode ("jnb", "%s,!tlabel", AOP (left)->aopu.aop_dir, (tlbl->key + 100));
6818 emitcode ("cpl", "c");
6819 emitcode ("", "!tlabeldef", (tlbl->key + 100));
6826 else if ((AOP_TYPE (result) == AOP_CRY) && ifx)
6827 genIfxJump (ifx, "c");
6831 if (sameRegs (AOP (result), AOP (left)))
6833 /* if left is same as result */
6834 for (; size--; offset++)
6836 if (AOP_TYPE (right) == AOP_LIT)
6838 if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)
6840 else if (IS_AOP_PREG (left))
6842 MOVA (aopGet (AOP (right), offset, FALSE, FALSE, TRUE));
6843 emitcode ("xrl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE, FALSE));
6844 aopPut (AOP (result), "a", offset);
6847 emitcode ("xrl", "%s,%s",
6848 aopGet (AOP (left), offset, FALSE, TRUE, FALSE),
6849 aopGet (AOP (right), offset, FALSE, FALSE, FALSE));
6853 if (AOP_TYPE (left) == AOP_ACC)
6854 emitcode ("xrl", "a,%s", aopGet (AOP (right), offset, FALSE, FALSE, FALSE));
6857 MOVA (aopGet (AOP (right), offset, FALSE, FALSE, TRUE));
6858 if (IS_AOP_PREG (left))
6860 emitcode ("xrl", "a,%s", aopGet (AOP (left), offset, FALSE, TRUE, FALSE));
6861 aopPut (AOP (result), "a", offset);
6864 emitcode ("xrl", "%s,a",
6865 aopGet (AOP (left), offset, FALSE, TRUE, FALSE));
6872 // left & result in different registers
6873 if (AOP_TYPE (result) == AOP_CRY)
6876 // if(size), result in bit
6877 // if(!size && ifx), conditional oper: if(left ^ right)
6878 symbol *tlbl = newiTempLabel (NULL);
6879 int sizer = max (AOP_SIZE (left), AOP_SIZE (right));
6882 emitcode ("setb", "c");
6885 if ((AOP_TYPE (right) == AOP_LIT) &&
6886 (((lit >> (offset * 8)) & 0x0FFL) == 0x00L))
6888 MOVA (aopGet (AOP (left), offset, FALSE, FALSE, TRUE));
6892 if (AOP_TYPE(right)==AOP_REG && AOP_TYPE(left)==AOP_ACC) {
6893 emitcode ("xrl", "a,%s",
6894 aopGet (AOP (right), offset, FALSE, FALSE, FALSE));
6896 char *rOp = aopGet (AOP (right), offset, FALSE, FALSE, TRUE);
6897 if (!strcmp(rOp, "a") || !strcmp(rOp, "acc"))
6899 emitcode("mov", "b,a");
6903 MOVA (aopGet (AOP (left), offset, FALSE, FALSE, TRUE));
6904 emitcode ("xrl", "a,%s", rOp);
6907 emitcode ("jnz", "!tlabel", tlbl->key + 100);
6913 emitcode ("", "!tlabeldef", tlbl->key + 100);
6917 jmpTrueOrFalse (ifx, tlbl);
6921 for (; (size--); offset++)
6924 // result = left & right
6925 if (AOP_TYPE (right) == AOP_LIT)
6927 if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)
6929 aopPut (AOP (result),
6930 aopGet (AOP (left), offset, FALSE, FALSE, FALSE),
6934 D (emitcode (";", "better literal XOR."););
6935 MOVA (aopGet (AOP (left), offset, FALSE, FALSE, TRUE));
6936 emitcode ("xrl", "a, %s", aopGet (AOP (right), offset,
6937 FALSE, FALSE, FALSE));
6941 // faster than result <- left, anl result,right
6942 // and better if result is SFR
6943 if (AOP_TYPE (left) == AOP_ACC)
6945 emitcode ("xrl", "a,%s", aopGet (AOP (right), offset,
6946 FALSE, FALSE, FALSE));
6950 char *rOp = aopGet (AOP (right), offset, FALSE, FALSE, TRUE);
6951 if (!strcmp(rOp, "a") || !strcmp(rOp, "acc"))
6953 emitcode("mov", "b,a");
6957 MOVA (aopGet (AOP (left), offset, FALSE, FALSE, TRUE));
6958 emitcode ("xrl", "a,%s", rOp);
6961 aopPut (AOP (result), "a", offset);
6968 freeAsmop (left, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
6969 freeAsmop (right, NULL, ic, (RESULTONSTACK (ic) ? FALSE : TRUE));
6970 freeAsmop (result, NULL, ic, TRUE);
6973 /*-----------------------------------------------------------------*/
6974 /* genInline - write the inline code out */
6975 /*-----------------------------------------------------------------*/
6977 genInline (iCode * ic)
6979 char *buffer, *bp, *bp1;
6981 D (emitcode (";", "genInline ");
6984 _G.inLine += (!options.asmpeep);
6986 buffer = bp = bp1 = Safe_calloc(1, strlen(IC_INLINE(ic))+1);
6987 strcpy (buffer, IC_INLINE (ic));
6989 /* emit each line as a code */
7014 /* emitcode("",buffer); */
7015 _G.inLine -= (!options.asmpeep);
7018 /*-----------------------------------------------------------------*/
7019 /* genRRC - rotate right with carry */
7020 /*-----------------------------------------------------------------*/
7024 operand *left, *result;
7025 int size, offset = 0;
7028 D (emitcode (";", "genRRC ");
7031 /* rotate right with carry */
7032 left = IC_LEFT (ic);
7033 result = IC_RESULT (ic);
7034 aopOp (left, ic, FALSE, FALSE);
7035 aopOp (result, ic, FALSE, AOP_TYPE (left) == AOP_DPTR);
7037 /* move it to the result */
7038 size = AOP_SIZE (result);
7042 _startLazyDPSEvaluation ();
7045 l = aopGet (AOP (left), offset, FALSE, FALSE, TRUE);
7047 emitcode ("rrc", "a");
7048 if (AOP_SIZE (result) > 1)
7049 aopPut (AOP (result), "a", offset--);
7051 _endLazyDPSEvaluation ();
7053 /* now we need to put the carry into the
7054 highest order byte of the result */
7055 if (AOP_SIZE (result) > 1)
7057 l = aopGet (AOP (result), AOP_SIZE (result) - 1, FALSE, FALSE, TRUE);
7060 emitcode ("mov", "acc.7,c");
7061 aopPut (AOP (result), "a", AOP_SIZE (result) - 1);
7062 freeAsmop (left, NULL, ic, TRUE);
7063 freeAsmop (result, NULL, ic, TRUE);
7066 /*-----------------------------------------------------------------*/
7067 /* genRLC - generate code for rotate left with carry */
7068 /*-----------------------------------------------------------------*/
7072 operand *left, *result;
7073 int size, offset = 0;
7076 D (emitcode (";", "genRLC ");
7079 /* rotate right with carry */
7080 left = IC_LEFT (ic);
7081 result = IC_RESULT (ic);
7082 aopOp (left, ic, FALSE, FALSE);
7083 aopOp (result, ic, FALSE, AOP_TYPE (left) == AOP_DPTR);
7085 /* move it to the result */
7086 size = AOP_SIZE (result);
7090 l = aopGet (AOP (left), offset, FALSE, FALSE, TRUE);
7092 emitcode ("add", "a,acc");
7093 if (AOP_SIZE (result) > 1)
7095 aopPut (AOP (result), "a", offset++);
7098 _startLazyDPSEvaluation ();
7101 l = aopGet (AOP (left), offset, FALSE, FALSE, TRUE);
7103 emitcode ("rlc", "a");
7104 if (AOP_SIZE (result) > 1)
7105 aopPut (AOP (result), "a", offset++);
7107 _endLazyDPSEvaluation ();
7109 /* now we need to put the carry into the
7110 highest order byte of the result */
7111 if (AOP_SIZE (result) > 1)
7113 l = aopGet (AOP (result), 0, FALSE, FALSE, TRUE);
7116 emitcode ("mov", "acc.0,c");
7117 aopPut (AOP (result), "a", 0);
7118 freeAsmop (left, NULL, ic, TRUE);
7119 freeAsmop (result, NULL, ic, TRUE);
7122 /*-----------------------------------------------------------------*/
7123 /* genGetHbit - generates code get highest order bit */
7124 /*-----------------------------------------------------------------*/
7126 genGetHbit (iCode * ic)
7128 operand *left, *result;
7129 left = IC_LEFT (ic);
7130 result = IC_RESULT (ic);
7131 aopOp (left, ic, FALSE, FALSE);
7132 aopOp (result, ic, FALSE, AOP_TYPE (left) == AOP_DPTR);
7134 D (emitcode (";", "genGetHbit ");
7137 /* get the highest order byte into a */
7138 MOVA (aopGet (AOP (left), AOP_SIZE (left) - 1, FALSE, FALSE, TRUE));
7139 if (AOP_TYPE (result) == AOP_CRY)
7141 emitcode ("rlc", "a");
7146 emitcode ("rl", "a");
7147 emitcode ("anl", "a,#1");
7152 freeAsmop (left, NULL, ic, TRUE);
7153 freeAsmop (result, NULL, ic, TRUE);
7156 /*-----------------------------------------------------------------*/
7157 /* AccRol - rotate left accumulator by known count */
7158 /*-----------------------------------------------------------------*/
7160 AccRol (int shCount)
7162 shCount &= 0x0007; // shCount : 0..7
7169 emitcode ("rl", "a");
7172 emitcode ("rl", "a");
7173 emitcode ("rl", "a");
7176 emitcode ("swap", "a");
7177 emitcode ("rr", "a");
7180 emitcode ("swap", "a");
7183 emitcode ("swap", "a");
7184 emitcode ("rl", "a");
7187 emitcode ("rr", "a");
7188 emitcode ("rr", "a");
7191 emitcode ("rr", "a");
7196 /*-----------------------------------------------------------------*/
7197 /* AccLsh - left shift accumulator by known count */
7198 /*-----------------------------------------------------------------*/
7200 AccLsh (int shCount)
7205 emitcode ("add", "a,acc");
7206 else if (shCount == 2)
7208 emitcode ("add", "a,acc");
7209 emitcode ("add", "a,acc");
7213 /* rotate left accumulator */
7215 /* and kill the lower order bits */
7216 emitcode ("anl", "a,#!constbyte", SLMask[shCount]);
7221 /*-----------------------------------------------------------------*/
7222 /* AccRsh - right shift accumulator by known count */
7223 /*-----------------------------------------------------------------*/
7225 AccRsh (int shCount)
7232 emitcode ("rrc", "a");
7236 /* rotate right accumulator */
7237 AccRol (8 - shCount);
7238 /* and kill the higher order bits */
7239 emitcode ("anl", "a,#!constbyte", SRMask[shCount]);
7244 #ifdef BETTER_LITERAL_SHIFT
7245 /*-----------------------------------------------------------------*/
7246 /* AccSRsh - signed right shift accumulator by known count */
7247 /*-----------------------------------------------------------------*/
7249 AccSRsh (int shCount)
7256 emitcode ("mov", "c,acc.7");
7257 emitcode ("rrc", "a");
7259 else if (shCount == 2)
7261 emitcode ("mov", "c,acc.7");
7262 emitcode ("rrc", "a");
7263 emitcode ("mov", "c,acc.7");
7264 emitcode ("rrc", "a");
7268 tlbl = newiTempLabel (NULL);
7269 /* rotate right accumulator */
7270 AccRol (8 - shCount);
7271 /* and kill the higher order bits */
7272 emitcode ("anl", "a,#!constbyte", SRMask[shCount]);
7273 emitcode ("jnb", "acc.%d,!tlabel", 7 - shCount, tlbl->key + 100);
7274 emitcode ("orl", "a,#!constbyte",
7275 (unsigned char) ~SRMask[shCount]);
7276 emitcode ("", "!tlabeldef", tlbl->key + 100);
7282 #ifdef BETTER_LITERAL_SHIFT
7283 /*-----------------------------------------------------------------*/
7284 /* shiftR1Left2Result - shift right one byte from left to result */
7285 /*-----------------------------------------------------------------*/
7287 shiftR1Left2Result (operand * left, int offl,
7288 operand * result, int offr,
7289 int shCount, int sign)
7291 MOVA (aopGet (AOP (left), offl, FALSE, FALSE, TRUE));
7292 /* shift right accumulator */
7297 aopPut (AOP (result), "a", offr);
7301 #ifdef BETTER_LITERAL_SHIFT
7302 /*-----------------------------------------------------------------*/
7303 /* shiftL1Left2Result - shift left one byte from left to result */
7304 /*-----------------------------------------------------------------*/
7306 shiftL1Left2Result (operand * left, int offl,
7307 operand * result, int offr, int shCount)
7309 MOVA(aopGet (AOP (left), offl, FALSE, FALSE, TRUE));
7310 /* shift left accumulator */
7312 aopPut (AOP (result), "a", offr);
7316 #ifdef BETTER_LITERAL_SHIFT
7317 /*-----------------------------------------------------------------*/
7318 /* movLeft2Result - move byte from left to result */
7319 /*-----------------------------------------------------------------*/
7321 movLeft2Result (operand * left, int offl,
7322 operand * result, int offr, int sign)
7325 if (!sameRegs (AOP (left), AOP (result)) || (offl != offr))
7327 l = aopGet (AOP (left), offl, FALSE, FALSE, TRUE);
7329 if (*l == '@' && (IS_AOP_PREG (result)))
7331 emitcode ("mov", "a,%s", l);
7332 aopPut (AOP (result), "a", offr);
7338 aopPut (AOP (result), l, offr);
7342 /* MSB sign in acc.7 ! */
7343 if (getDataSize (left) == offl + 1)
7345 emitcode ("mov", "a,%s", l);
7346 aopPut (AOP (result), "a", offr);
7354 #ifdef BETTER_LITERAL_SHIFT
7355 /*-----------------------------------------------------------------*/
7356 /* AccAXRrl1 - right rotate c->a:x->c by 1 */
7357 /*-----------------------------------------------------------------*/
7361 emitcode ("rrc", "a");
7362 emitcode ("xch", "a,%s", x);
7363 emitcode ("rrc", "a");
7364 emitcode ("xch", "a,%s", x);
7368 #ifdef BETTER_LITERAL_SHIFT
7370 /*-----------------------------------------------------------------*/
7371 /* AccAXLrl1 - left rotate c<-a:x<-c by 1 */
7372 /*-----------------------------------------------------------------*/
7376 emitcode ("xch", "a,%s", x);
7377 emitcode ("rlc", "a");
7378 emitcode ("xch", "a,%s", x);
7379 emitcode ("rlc", "a");
7383 #ifdef BETTER_LITERAL_SHIFT
7384 /*-----------------------------------------------------------------*/
7385 /* AccAXLsh1 - left shift a:x<-0 by 1 */
7386 /*-----------------------------------------------------------------*/
7390 emitcode ("xch", "a,%s", x);
7391 emitcode ("add", "a,acc");
7392 emitcode ("xch", "a,%s", x);
7393 emitcode ("rlc", "a");
7397 #ifdef BETTER_LITERAL_SHIFT
7398 /*-----------------------------------------------------------------*/
7399 /* AccAXLsh - left shift a:x by known count (0..7) */
7400 /*-----------------------------------------------------------------*/
7402 AccAXLsh (char *x, int shCount)
7417 case 5: // AAAAABBB:CCCCCDDD
7419 AccRol (shCount); // BBBAAAAA:CCCCCDDD
7421 emitcode ("anl", "a,#!constbyte",
7422 SLMask[shCount]); // BBB00000:CCCCCDDD
7424 emitcode ("xch", "a,%s", x); // CCCCCDDD:BBB00000
7426 AccRol (shCount); // DDDCCCCC:BBB00000
7428 emitcode ("xch", "a,%s", x); // BBB00000:DDDCCCCC
7430 emitcode ("xrl", "a,%s", x); // (BBB^DDD)CCCCC:DDDCCCCC
7432 emitcode ("xch", "a,%s", x); // DDDCCCCC:(BBB^DDD)CCCCC
7434 emitcode ("anl", "a,#!constbyte",
7435 SLMask[shCount]); // DDD00000:(BBB^DDD)CCCCC
7437 emitcode ("xch", "a,%s", x); // (BBB^DDD)CCCCC:DDD00000
7439 emitcode ("xrl", "a,%s", x); // BBBCCCCC:DDD00000
7442 case 6: // AAAAAABB:CCCCCCDD
7443 emitcode ("anl", "a,#!constbyte",
7444 SRMask[shCount]); // 000000BB:CCCCCCDD
7445 emitcode ("mov", "c,acc.0"); // c = B
7446 emitcode ("xch", "a,%s", x); // CCCCCCDD:000000BB
7448 AccAXRrl1 (x); // BCCCCCCD:D000000B
7449 AccAXRrl1 (x); // BBCCCCCC:DD000000
7451 emitcode("rrc","a");
7452 emitcode("xch","a,%s", x);
7453 emitcode("rrc","a");
7454 emitcode("mov","c,acc.0"); //<< get correct bit
7455 emitcode("xch","a,%s", x);
7457 emitcode("rrc","a");
7458 emitcode("xch","a,%s", x);
7459 emitcode("rrc","a");
7460 emitcode("xch","a,%s", x);
7463 case 7: // a:x <<= 7
7465 emitcode ("anl", "a,#!constbyte",
7466 SRMask[shCount]); // 0000000B:CCCCCCCD
7468 emitcode ("mov", "c,acc.0"); // c = B
7470 emitcode ("xch", "a,%s", x); // CCCCCCCD:0000000B
7472 AccAXRrl1 (x); // BCCCCCCC:D0000000
7481 #ifdef BETTER_LITERAL_SHIFT
7483 /*-----------------------------------------------------------------*/
7484 /* AccAXRsh - right shift a:x known count (0..7) */
7485 /*-----------------------------------------------------------------*/
7487 AccAXRsh (char *x, int shCount)
7495 AccAXRrl1 (x); // 0->a:x
7500 AccAXRrl1 (x); // 0->a:x
7503 AccAXRrl1 (x); // 0->a:x
7508 case 5: // AAAAABBB:CCCCCDDD = a:x
7510 AccRol (8 - shCount); // BBBAAAAA:DDDCCCCC
7512 emitcode ("xch", "a,%s", x); // CCCCCDDD:BBBAAAAA
7514 AccRol (8 - shCount); // DDDCCCCC:BBBAAAAA
7516 emitcode ("anl", "a,#!constbyte",
7517 SRMask[shCount]); // 000CCCCC:BBBAAAAA
7519 emitcode ("xrl", "a,%s", x); // BBB(CCCCC^AAAAA):BBBAAAAA
7521 emitcode ("xch", "a,%s", x); // BBBAAAAA:BBB(CCCCC^AAAAA)
7523 emitcode ("anl", "a,#!constbyte",
7524 SRMask[shCount]); // 000AAAAA:BBB(CCCCC^AAAAA)
7526 emitcode ("xch", "a,%s", x); // BBB(CCCCC^AAAAA):000AAAAA
7528 emitcode ("xrl", "a,%s", x); // BBBCCCCC:000AAAAA
7530 emitcode ("xch", "a,%s", x); // 000AAAAA:BBBCCCCC
7533 case 6: // AABBBBBB:CCDDDDDD
7535 emitcode ("mov", "c,acc.7");
7536 AccAXLrl1 (x); // ABBBBBBC:CDDDDDDA
7538 AccAXLrl1 (x); // BBBBBBCC:DDDDDDAA
7540 emitcode ("xch", "a,%s", x); // DDDDDDAA:BBBBBBCC
7542 emitcode ("anl", "a,#!constbyte",
7543 SRMask[shCount]); // 000000AA:BBBBBBCC
7546 case 7: // ABBBBBBB:CDDDDDDD
7548 emitcode ("mov", "c,acc.7"); // c = A
7550 AccAXLrl1 (x); // BBBBBBBC:DDDDDDDA
7552 emitcode ("xch", "a,%s", x); // DDDDDDDA:BBBBBBCC
7554 emitcode ("anl", "a,#!constbyte",
7555 SRMask[shCount]); // 0000000A:BBBBBBBC
7564 #ifdef BETTER_LITERAL_SHIFT
7565 /*-----------------------------------------------------------------*/
7566 /* AccAXRshS - right shift signed a:x known count (0..7) */
7567 /*-----------------------------------------------------------------*/
7569 AccAXRshS (char *x, int shCount)
7577 emitcode ("mov", "c,acc.7");
7578 AccAXRrl1 (x); // s->a:x
7582 emitcode ("mov", "c,acc.7");
7583 AccAXRrl1 (x); // s->a:x
7585 emitcode ("mov", "c,acc.7");
7586 AccAXRrl1 (x); // s->a:x
7591 case 5: // AAAAABBB:CCCCCDDD = a:x
7593 tlbl = newiTempLabel (NULL);
7594 AccRol (8 - shCount); // BBBAAAAA:CCCCCDDD
7596 emitcode ("xch", "a,%s", x); // CCCCCDDD:BBBAAAAA
7598 AccRol (8 - shCount); // DDDCCCCC:BBBAAAAA
7600 emitcode ("anl", "a,#!constbyte",
7601 SRMask[shCount]); // 000CCCCC:BBBAAAAA
7603 emitcode ("xrl", "a,%s", x); // BBB(CCCCC^AAAAA):BBBAAAAA
7605 emitcode ("xch", "a,%s", x); // BBBAAAAA:BBB(CCCCC^AAAAA)
7607 emitcode ("anl", "a,#!constbyte",
7608 SRMask[shCount]); // 000AAAAA:BBB(CCCCC^AAAAA)
7610 emitcode ("xch", "a,%s", x); // BBB(CCCCC^AAAAA):000AAAAA
7612 emitcode ("xrl", "a,%s", x); // BBBCCCCC:000AAAAA
7614 emitcode ("xch", "a,%s", x); // 000SAAAA:BBBCCCCC
7616 emitcode ("jnb", "acc.%d,!tlabel", 7 - shCount, tlbl->key + 100);
7617 emitcode ("orl", "a,#!constbyte",
7618 (unsigned char) ~SRMask[shCount]); // 111AAAAA:BBBCCCCC
7620 emitcode ("", "!tlabeldef", tlbl->key + 100);
7621 break; // SSSSAAAA:BBBCCCCC
7623 case 6: // AABBBBBB:CCDDDDDD
7625 tlbl = newiTempLabel (NULL);
7626 emitcode ("mov", "c,acc.7");
7627 AccAXLrl1 (x); // ABBBBBBC:CDDDDDDA
7629 AccAXLrl1 (x); // BBBBBBCC:DDDDDDAA
7631 emitcode ("xch", "a,%s", x); // DDDDDDAA:BBBBBBCC
7633 emitcode ("anl", "a,#!constbyte",
7634 SRMask[shCount]); // 000000AA:BBBBBBCC
7636 emitcode ("jnb", "acc.%d,!tlabel", 7 - shCount, tlbl->key + 100);
7637 emitcode ("orl", "a,#!constbyte",
7638 (unsigned char) ~SRMask[shCount]); // 111111AA:BBBBBBCC
7640 emitcode ("", "!tlabeldef", tlbl->key + 100);
7642 case 7: // ABBBBBBB:CDDDDDDD
7644 tlbl = newiTempLabel (NULL);
7645 emitcode ("mov", "c,acc.7"); // c = A
7647 AccAXLrl1 (x); // BBBBBBBC:DDDDDDDA
7649 emitcode ("xch", "a,%s", x); // DDDDDDDA:BBBBBBCC
7651 emitcode ("anl", "a,#!constbyte",
7652 SRMask[shCount]); // 0000000A:BBBBBBBC
7654 emitcode ("jnb", "acc.%d,!tlabel", 7 - shCount, tlbl->key + 100);
7655 emitcode ("orl", "a,#!constbyte",
7656 (unsigned char) ~SRMask[shCount]); // 1111111A:BBBBBBBC
7658 emitcode ("", "!tlabeldef", tlbl->key + 100);
7666 #ifdef BETTER_LITERAL_SHIFT
7668 _loadLeftIntoAx(char **lsb,
7674 // Get the initial value from left into a pair of registers.
7675 // MSB must be in A, LSB can be any register.
7677 // If the result is held in registers, it is an optimization
7678 // if the LSB can be held in the register which will hold the,
7679 // result LSB since this saves us from having to copy it into
7680 // the result following AccAXLsh.
7682 // If the result is addressed indirectly, this is not a gain.
7683 if (AOP_NEEDSACC(result))
7687 _startLazyDPSEvaluation();
7688 if (AOP_TYPE(left) == AOP_DPTR2)
7691 MOVA(aopGet(AOP(left), offl + MSB16, FALSE, FALSE, TRUE));
7692 // get LSB in DP2_RESULT_REG.
7693 leftByte = aopGet(AOP(left), offl, FALSE, FALSE, FALSE);
7694 assert(!strcmp(leftByte, DP2_RESULT_REG));
7698 // get LSB into DP2_RESULT_REG
7699 leftByte = aopGet (AOP(left), offl, FALSE, FALSE, TRUE);
7700 if (strcmp(leftByte, DP2_RESULT_REG))
7703 emitcode("mov","%s,%s", DP2_RESULT_REG, leftByte);
7706 leftByte = aopGet(AOP(left), offl + MSB16, FALSE, FALSE, TRUE);
7707 assert(strcmp(leftByte, DP2_RESULT_REG));
7710 _endLazyDPSEvaluation();
7711 *lsb = DP2_RESULT_REG;
7715 if (sameRegs (AOP (result), AOP (left)) &&
7716 ((offl + MSB16) == offr))
7718 /* don't crash result[offr] */
7719 MOVA(aopGet(AOP(left), offl, FALSE, FALSE, TRUE));
7720 emitcode ("xch", "a,%s",
7721 aopGet(AOP(left), offl + MSB16, FALSE, FALSE, FALSE));
7725 movLeft2Result (left, offl, result, offr, 0);
7726 MOVA (aopGet (AOP (left), offl + MSB16, FALSE, FALSE, TRUE));
7728 *lsb = aopGet(AOP (result), offr, FALSE, FALSE, FALSE);
7729 assert(strcmp(*lsb,"a"));
7734 _storeAxResults(char *lsb,
7738 _startLazyDPSEvaluation();
7739 if (AOP_NEEDSACC(result))
7741 /* We have to explicitly update the result LSB.
7743 emitcode("xch","a,%s", lsb);
7744 aopPut(AOP(result), "a", offr);
7745 emitcode("mov","a,%s", lsb);
7747 if (getDataSize (result) > 1)
7749 aopPut (AOP (result), "a", offr + MSB16);
7751 _endLazyDPSEvaluation();
7754 /*-----------------------------------------------------------------*/
7755 /* shiftL2Left2Result - shift left two bytes from left to result */
7756 /*-----------------------------------------------------------------*/
7758 shiftL2Left2Result (operand * left, int offl,
7759 operand * result, int offr, int shCount)
7763 _loadLeftIntoAx(&lsb, left, result, offl, offr);
7765 AccAXLsh (lsb, shCount);
7767 _storeAxResults(lsb, result, offr);
7771 #ifdef BETTER_LITERAL_SHIFT
7772 /*-----------------------------------------------------------------*/
7773 /* shiftR2Left2Result - shift right two bytes from left to result */
7774 /*-----------------------------------------------------------------*/
7776 shiftR2Left2Result (operand * left, int offl,
7777 operand * result, int offr,
7778 int shCount, int sign)
7782 _loadLeftIntoAx(&lsb, left, result, offl, offr);
7784 /* a:x >> shCount (x = lsb(result)) */
7787 AccAXRshS(lsb, shCount);
7791 AccAXRsh(lsb, shCount);
7794 _storeAxResults(lsb, result, offr);
7800 /*-----------------------------------------------------------------*/
7801 /* shiftLLeftOrResult - shift left one byte from left, or to result */
7802 /*-----------------------------------------------------------------*/
7804 shiftLLeftOrResult (operand * left, int offl,
7805 operand * result, int offr, int shCount)
7807 MOVA (aopGet (AOP (left), offl, FALSE, FALSE, TRUE));
7808 /* shift left accumulator */
7810 /* or with result */
7811 emitcode ("orl", "a,%s", aopGet (AOP (result), offr, FALSE, FALSE, FALSE));
7812 /* back to result */
7813 aopPut (AOP (result), "a", offr);
7819 /*-----------------------------------------------------------------*/
7820 /* shiftRLeftOrResult - shift right one byte from left,or to result */
7821 /*-----------------------------------------------------------------*/
7823 shiftRLeftOrResult (operand * left, int offl,
7824 operand * result, int offr, int shCount)
7826 MOVA (aopGet (AOP (left), offl, FALSE, FALSE, TRUE));
7827 /* shift right accumulator */
7829 /* or with result */
7830 emitcode ("orl", "a,%s", aopGet (AOP (result), offr, FALSE, FALSE, FALSE));
7831 /* back to result */
7832 aopPut (AOP (result), "a", offr);
7836 #ifdef BETTER_LITERAL_SHIFT
7837 /*-----------------------------------------------------------------*/
7838 /* genlshOne - left shift a one byte quantity by known count */
7839 /*-----------------------------------------------------------------*/
7841 genlshOne (operand * result, operand * left, int shCount)
7843 D (emitcode (";", "genlshOne "););
7844 shiftL1Left2Result (left, LSB, result, LSB, shCount);
7848 #ifdef BETTER_LITERAL_SHIFT
7849 /*-----------------------------------------------------------------*/
7850 /* genlshTwo - left shift two bytes by known amount != 0 */
7851 /*-----------------------------------------------------------------*/
7853 genlshTwo (operand * result, operand * left, int shCount)
7857 D (emitcode (";", "genlshTwo "););
7859 size = getDataSize (result);
7861 /* if shCount >= 8 */
7866 _startLazyDPSEvaluation();
7872 _endLazyDPSEvaluation();
7873 shiftL1Left2Result (left, LSB, result, MSB16, shCount);
7874 aopPut (AOP (result), zero, LSB);
7878 movLeft2Result (left, LSB, result, MSB16, 0);
7879 aopPut (AOP (result), zero, LSB);
7880 _endLazyDPSEvaluation();
7885 aopPut (AOP (result), zero, LSB);
7886 _endLazyDPSEvaluation();
7890 /* 1 <= shCount <= 7 */
7895 shiftL1Left2Result (left, LSB, result, LSB, shCount);
7899 shiftL2Left2Result (left, LSB, result, LSB, shCount);
7907 /*-----------------------------------------------------------------*/
7908 /* shiftLLong - shift left one long from left to result */
7909 /* offl = LSB or MSB16 */
7910 /*-----------------------------------------------------------------*/
7912 shiftLLong (operand * left, operand * result, int offr)
7915 int size = AOP_SIZE (result);
7917 if (size >= LSB + offr)
7919 l = aopGet (AOP (left), LSB, FALSE, FALSE, TRUE);
7921 emitcode ("add", "a,acc");
7922 if (sameRegs (AOP (left), AOP (result)) &&
7923 size >= MSB16 + offr && offr != LSB)
7924 emitcode ("xch", "a,%s",
7925 aopGet (AOP (left), LSB + offr, FALSE, FALSE, FALSE));
7927 aopPut (AOP (result), "a", LSB + offr);
7930 if (size >= MSB16 + offr)
7932 if (!(sameRegs (AOP (result), AOP (left)) && size >= MSB16 + offr && offr != LSB))
7934 l = aopGet (AOP (left), MSB16, FALSE, FALSE, TRUE);
7937 emitcode ("rlc", "a");
7938 if (sameRegs (AOP (left), AOP (result)) &&
7939 size >= MSB24 + offr && offr != LSB)
7940 emitcode ("xch", "a,%s",
7941 aopGet (AOP (left), MSB16 + offr, FALSE, FALSE, FALSE));
7943 aopPut (AOP (result), "a", MSB16 + offr);
7946 if (size >= MSB24 + offr)
7948 if (!(sameRegs (AOP (left), AOP (left)) && size >= MSB24 + offr && offr != LSB))
7950 l = aopGet (AOP (left), MSB24, FALSE, FALSE, TRUE);
7953 emitcode ("rlc", "a");
7954 if (sameRegs (AOP (left), AOP (result)) &&
7955 size >= MSB32 + offr && offr != LSB)
7956 emitcode ("xch", "a,%s",
7957 aopGet (AOP (left), MSB24 + offr, FALSE, FALSE, FALSE));
7959 aopPut (AOP (result), "a", MSB24 + offr);
7962 if (size > MSB32 + offr)
7964 if (!(sameRegs (AOP (result), AOP (left)) && size >= MSB32 + offr && offr != LSB))
7966 l = aopGet (AOP (left), MSB32, FALSE, FALSE, TRUE);
7969 emitcode ("rlc", "a");
7970 aopPut (AOP (result), "a", MSB32 + offr);
7973 aopPut (AOP (result), zero, LSB);
7979 /*-----------------------------------------------------------------*/
7980 /* genlshFour - shift four byte by a known amount != 0 */
7981 /*-----------------------------------------------------------------*/
7983 genlshFour (operand * result, operand * left, int shCount)
7987 D (emitcode (";", "genlshFour ");
7990 size = AOP_SIZE (result);
7992 /* if shifting more that 3 bytes */
7997 /* lowest order of left goes to the highest
7998 order of the destination */
7999 shiftL1Left2Result (left, LSB, result, MSB32, shCount);
8001 movLeft2Result (left, LSB, result, MSB32, 0);
8002 aopPut (AOP (result), zero, LSB);
8003 aopPut (AOP (result), zero, MSB16);
8004 aopPut (AOP (result), zero, MSB24);
8008 /* more than two bytes */
8009 else if (shCount >= 16)
8011 /* lower order two bytes goes to higher order two bytes */
8013 /* if some more remaining */
8015 shiftL2Left2Result (left, LSB, result, MSB24, shCount);
8018 movLeft2Result (left, MSB16, result, MSB32, 0);
8019 movLeft2Result (left, LSB, result, MSB24, 0);
8021 aopPut (AOP (result), zero, MSB16);
8022 aopPut (AOP (result), zero, LSB);
8026 /* if more than 1 byte */
8027 else if (shCount >= 8)
8029 /* lower order three bytes goes to higher order three bytes */
8034 shiftL1Left2Result (left, LSB, result, MSB16, shCount);
8036 movLeft2Result (left, LSB, result, MSB16, 0);
8042 movLeft2Result (left, MSB24, result, MSB32, 0);
8043 movLeft2Result (left, MSB16, result, MSB24, 0);
8044 movLeft2Result (left, LSB, result, MSB16, 0);
8045 aopPut (AOP (result), zero, LSB);
8047 else if (shCount == 1)
8048 shiftLLong (left, result, MSB16);
8051 shiftL2Left2Result (left, MSB16, result, MSB24, shCount);
8052 shiftL1Left2Result (left, LSB, result, MSB16, shCount);
8053 shiftRLeftOrResult (left, LSB, result, MSB24, 8 - shCount);
8054 aopPut (AOP (result), zero, LSB);
8059 /* 1 <= shCount <= 7 */
8060 else if (shCount <= 2)
8062 shiftLLong (left, result, LSB);
8064 shiftLLong (result, result, LSB);
8066 /* 3 <= shCount <= 7, optimize */
8069 shiftL2Left2Result (left, MSB24, result, MSB24, shCount);
8070 shiftRLeftOrResult (left, MSB16, result, MSB24, 8 - shCount);
8071 shiftL2Left2Result (left, LSB, result, LSB, shCount);
8076 #ifdef BETTER_LITERAL_SHIFT
8077 /*-----------------------------------------------------------------*/
8078 /* genLeftShiftLiteral - left shifting by known count */
8079 /*-----------------------------------------------------------------*/
8081 genLeftShiftLiteral (operand * left,
8086 int shCount = (int) floatFromVal (AOP (right)->aopu.aop_lit);
8089 size = getSize (operandType (result));
8091 D(emitcode (";", "genLeftShiftLiteral (%d), size %d", shCount, size););
8093 /* We only handle certain easy cases so far. */
8095 && (shCount < (size * 8))
8099 D(emitcode (";", "genLeftShiftLiteral wimping out"););
8103 freeAsmop (right, NULL, ic, TRUE);
8105 aopOp(left, ic, FALSE, FALSE);
8106 aopOp(result, ic, FALSE, (AOP_TYPE(left) == AOP_DPTR));
8109 if (IS_SYMOP(left) && OP_SYMBOL(left)->aop)
8111 emitcode(";", "left (%s) is %d", OP_SYMBOL(left)->rname, AOP_TYPE(left));
8112 if (!IS_TRUE_SYMOP(left) && OP_SYMBOL(left)->usl.spillLoc)
8114 emitcode(";", "\taka %s", OP_SYMBOL(left)->usl.spillLoc->rname);
8117 if (IS_SYMOP(result) && OP_SYMBOL(result)->aop)
8119 emitcode(";", "result (%s) is %d", OP_SYMBOL(result)->rname, AOP_TYPE(result));
8120 if (!IS_TRUE_SYMOP(result) && OP_SYMBOL(result)->usl.spillLoc)
8122 emitcode(";", "\taka %s", OP_SYMBOL(result)->usl.spillLoc->rname);
8128 emitcode ("; shift left ", "result %d, left %d", size,
8132 /* I suppose that the left size >= result size */
8135 _startLazyDPSEvaluation();
8138 movLeft2Result (left, size, result, size, 0);
8140 _endLazyDPSEvaluation();
8142 else if (shCount >= (size * 8))
8144 _startLazyDPSEvaluation();
8147 aopPut (AOP (result), zero, size);
8149 _endLazyDPSEvaluation();
8156 genlshOne (result, left, shCount);
8160 genlshTwo (result, left, shCount);
8164 genlshFour (result, left, shCount);
8168 fprintf(stderr, "*** ack! mystery literal shift!\n");
8172 freeAsmop (left, NULL, ic, TRUE);
8173 freeAsmop (result, NULL, ic, TRUE);
8178 /*-----------------------------------------------------------------*/
8179 /* genLeftShift - generates code for left shifting */
8180 /*-----------------------------------------------------------------*/
8182 genLeftShift (iCode * ic)
8184 operand *left, *right, *result;
8187 symbol *tlbl, *tlbl1;
8189 D (emitcode (";", "genLeftShift "););
8191 right = IC_RIGHT (ic);
8192 left = IC_LEFT (ic);
8193 result = IC_RESULT (ic);
8195 aopOp (right, ic, FALSE, FALSE);
8198 #ifdef BETTER_LITERAL_SHIFT
8199 /* if the shift count is known then do it
8200 as efficiently as possible */
8201 if (AOP_TYPE (right) == AOP_LIT)
8203 if (genLeftShiftLiteral (left, right, result, ic))
8210 /* shift count is unknown then we have to form
8211 a loop get the loop count in B : Note: we take
8212 only the lower order byte since shifting
8213 more that 32 bits make no sense anyway, ( the
8214 largest size of an object can be only 32 bits ) */
8216 if (AOP_TYPE (right) == AOP_LIT)
8218 /* Really should be handled by genLeftShiftLiteral,
8219 * but since I'm too lazy to fix that today, at least we can make
8220 * some small improvement.
8222 emitcode("mov", "b,#!constbyte",
8223 ((int) floatFromVal (AOP (right)->aopu.aop_lit)) + 1);
8227 emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE, FALSE));
8228 emitcode ("inc", "b");
8230 freeAsmop (right, NULL, ic, TRUE);
8231 aopOp (left, ic, FALSE, FALSE);
8232 aopOp (result, ic, FALSE, AOP_TYPE (left) == AOP_DPTR);
8234 /* now move the left to the result if they are not the
8236 if (!sameRegs (AOP (left), AOP (result)) &&
8237 AOP_SIZE (result) > 1)
8240 size = AOP_SIZE (result);
8242 _startLazyDPSEvaluation ();
8245 l = aopGet (AOP (left), offset, FALSE, TRUE, FALSE);
8246 if (*l == '@' && (IS_AOP_PREG (result)))
8249 emitcode ("mov", "a,%s", l);
8250 aopPut (AOP (result), "a", offset);
8253 aopPut (AOP (result), l, offset);
8256 _endLazyDPSEvaluation ();
8259 tlbl = newiTempLabel (NULL);
8260 size = AOP_SIZE (result);
8262 tlbl1 = newiTempLabel (NULL);
8264 /* if it is only one byte then */
8267 symbol *tlbl1 = newiTempLabel (NULL);
8269 l = aopGet (AOP (left), 0, FALSE, FALSE, TRUE);
8271 emitcode ("sjmp", "!tlabel", tlbl1->key + 100);
8272 emitcode ("", "!tlabeldef", tlbl->key + 100);
8273 emitcode ("add", "a,acc");
8274 emitcode ("", "!tlabeldef", tlbl1->key + 100);
8275 emitcode ("djnz", "b,!tlabel", tlbl->key + 100);
8276 aopPut (AOP (result), "a", 0);
8280 reAdjustPreg (AOP (result));
8282 emitcode ("sjmp", "!tlabel", tlbl1->key + 100);
8283 emitcode ("", "!tlabeldef", tlbl->key + 100);
8284 l = aopGet (AOP (result), offset, FALSE, FALSE, TRUE);
8286 emitcode ("add", "a,acc");
8287 aopPut (AOP (result), "a", offset++);
8288 _startLazyDPSEvaluation ();
8291 l = aopGet (AOP (result), offset, FALSE, FALSE, TRUE);
8293 emitcode ("rlc", "a");
8294 aopPut (AOP (result), "a", offset++);
8296 _endLazyDPSEvaluation ();
8297 reAdjustPreg (AOP (result));
8299 emitcode ("", "!tlabeldef", tlbl1->key + 100);
8300 emitcode ("djnz", "b,!tlabel", tlbl->key + 100);
8302 freeAsmop (left, NULL, ic, TRUE);
8303 freeAsmop (result, NULL, ic, TRUE);
8306 #ifdef BETTER_LITERAL_SHIFT
8307 /*-----------------------------------------------------------------*/
8308 /* genrshOne - right shift a one byte quantity by known count */
8309 /*-----------------------------------------------------------------*/
8311 genrshOne (operand * result, operand * left,
8312 int shCount, int sign)
8314 D (emitcode (";", "genrshOne"););
8315 shiftR1Left2Result (left, LSB, result, LSB, shCount, sign);
8319 #ifdef BETTER_LITERAL_SHIFT
8320 /*-----------------------------------------------------------------*/
8321 /* genrshTwo - right shift two bytes by known amount != 0 */
8322 /*-----------------------------------------------------------------*/
8324 genrshTwo (operand * result, operand * left,
8325 int shCount, int sign)
8327 D (emitcode (";", "genrshTwo"););
8329 /* if shCount >= 8 */
8333 _startLazyDPSEvaluation();
8336 shiftR1Left2Result (left, MSB16, result, LSB,
8341 movLeft2Result (left, MSB16, result, LSB, sign);
8343 addSign (result, MSB16, sign);
8344 _endLazyDPSEvaluation();
8347 /* 1 <= shCount <= 7 */
8350 shiftR2Left2Result (left, LSB, result, LSB, shCount, sign);
8357 /*-----------------------------------------------------------------*/
8358 /* shiftRLong - shift right one long from left to result */
8359 /* offl = LSB or MSB16 */
8360 /*-----------------------------------------------------------------*/
8362 shiftRLong (operand * left, int offl,
8363 operand * result, int sign)
8365 int isSameRegs=sameRegs(AOP(left),AOP(result));
8367 if (isSameRegs && offl>1) {
8368 // we are in big trouble, but this shouldn't happen
8369 werror(E_INTERNAL_ERROR, __FILE__, __LINE__);
8372 MOVA (aopGet (AOP (left), MSB32, FALSE, FALSE));
8377 emitcode ("rlc", "a");
8378 emitcode ("subb", "a,acc");
8379 emitcode ("xch", "a,%s", aopGet(AOP(left), MSB32, FALSE, FALSE));
8381 aopPut (AOP(result), zero, MSB32);
8386 emitcode ("clr", "c");
8388 emitcode ("mov", "c,acc.7");
8391 emitcode ("rrc", "a");
8393 if (isSameRegs && offl==MSB16) {
8394 emitcode ("xch", "a,%s",aopGet (AOP (left), MSB24, FALSE, FALSE));
8396 aopPut (AOP (result), "a", MSB32);
8397 MOVA (aopGet (AOP (left), MSB24, FALSE, FALSE));
8400 emitcode ("rrc", "a");
8401 if (isSameRegs && offl==1) {
8402 emitcode ("xch", "a,%s",aopGet (AOP (left), MSB16, FALSE, FALSE));
8404 aopPut (AOP (result), "a", MSB24);
8405 MOVA (aopGet (AOP (left), MSB16, FALSE, FALSE));
8407 emitcode ("rrc", "a");
8408 aopPut (AOP (result), "a", MSB16 - offl);
8412 MOVA (aopGet (AOP (left), LSB, FALSE, FALSE));
8413 emitcode ("rrc", "a");
8414 aopPut (AOP (result), "a", LSB);
8421 /*-----------------------------------------------------------------*/
8422 /* genrshFour - shift four byte by a known amount != 0 */
8423 /*-----------------------------------------------------------------*/
8425 genrshFour (operand * result, operand * left,
8426 int shCount, int sign)
8428 D (emitcode (";", "genrshFour");
8431 /* if shifting more that 3 bytes */
8436 shiftR1Left2Result (left, MSB32, result, LSB, shCount, sign);
8438 movLeft2Result (left, MSB32, result, LSB, sign);
8439 addSign (result, MSB16, sign);
8441 else if (shCount >= 16)
8445 shiftR2Left2Result (left, MSB24, result, LSB, shCount, sign);
8448 movLeft2Result (left, MSB24, result, LSB, 0);
8449 movLeft2Result (left, MSB32, result, MSB16, sign);
8451 addSign (result, MSB24, sign);
8453 else if (shCount >= 8)
8457 shiftRLong (left, MSB16, result, sign);
8458 else if (shCount == 0)
8460 movLeft2Result (left, MSB16, result, LSB, 0);
8461 movLeft2Result (left, MSB24, result, MSB16, 0);
8462 movLeft2Result (left, MSB32, result, MSB24, sign);
8463 addSign (result, MSB32, sign);
8467 shiftR2Left2Result (left, MSB16, result, LSB, shCount, 0);
8468 shiftLLeftOrResult (left, MSB32, result, MSB16, 8 - shCount);
8469 /* the last shift is signed */
8470 shiftR1Left2Result (left, MSB32, result, MSB24, shCount, sign);
8471 addSign (result, MSB32, sign);
8475 { /* 1 <= shCount <= 7 */
8478 shiftRLong (left, LSB, result, sign);
8480 shiftRLong (result, LSB, result, sign);
8484 shiftR2Left2Result (left, LSB, result, LSB, shCount, 0);
8485 shiftLLeftOrResult (left, MSB24, result, MSB16, 8 - shCount);
8486 shiftR2Left2Result (left, MSB24, result, MSB24, shCount, sign);
8492 #ifdef BETTER_LITERAL_SHIFT
8493 /*-----------------------------------------------------------------*/
8494 /* genRightShiftLiteral - right shifting by known count */
8495 /*-----------------------------------------------------------------*/
8497 genRightShiftLiteral (operand * left,
8503 int shCount = (int) floatFromVal (AOP (right)->aopu.aop_lit);
8506 size = getSize (operandType (result));
8508 D(emitcode (";", "genRightShiftLiteral (%d), size %d", shCount, size););
8510 /* We only handle certain easy cases so far. */
8512 && (shCount < (size * 8))
8516 D(emitcode (";", "genRightShiftLiteral wimping out"););
8520 freeAsmop (right, NULL, ic, TRUE);
8522 aopOp (left, ic, FALSE, FALSE);
8523 aopOp (result, ic, FALSE, AOP_TYPE (left) == AOP_DPTR);
8526 emitcode ("; shift right ", "result %d, left %d", AOP_SIZE (result),
8530 /* test the LEFT size !!! */
8532 /* I suppose that the left size >= result size */
8535 size = getDataSize (result);
8536 _startLazyDPSEvaluation();
8539 movLeft2Result (left, size, result, size, 0);
8541 _endLazyDPSEvaluation();
8543 else if (shCount >= (size * 8))
8547 /* get sign in acc.7 */
8548 MOVA (aopGet (AOP (left), size - 1, FALSE, FALSE, TRUE));
8550 addSign (result, LSB, sign);
8557 genrshOne (result, left, shCount, sign);
8561 genrshTwo (result, left, shCount, sign);
8565 genrshFour (result, left, shCount, sign);
8572 freeAsmop (left, NULL, ic, TRUE);
8573 freeAsmop (result, NULL, ic, TRUE);
8579 /*-----------------------------------------------------------------*/
8580 /* genSignedRightShift - right shift of signed number */
8581 /*-----------------------------------------------------------------*/
8583 genSignedRightShift (iCode * ic)
8585 operand *right, *left, *result;
8588 symbol *tlbl, *tlbl1;
8590 D (emitcode (";", "genSignedRightShift "););
8592 /* we do it the hard way put the shift count in b
8593 and loop thru preserving the sign */
8595 right = IC_RIGHT (ic);
8596 left = IC_LEFT (ic);
8597 result = IC_RESULT (ic);
8599 aopOp (right, ic, FALSE, FALSE);
8601 #ifdef BETTER_LITERAL_SHIFT
8602 if (AOP_TYPE (right) == AOP_LIT)
8604 if (genRightShiftLiteral (left, right, result, ic, 1))
8610 /* shift count is unknown then we have to form
8611 a loop get the loop count in B : Note: we take
8612 only the lower order byte since shifting
8613 more that 32 bits make no sense anyway, ( the
8614 largest size of an object can be only 32 bits ) */
8616 if (AOP_TYPE (right) == AOP_LIT)
8618 /* Really should be handled by genRightShiftLiteral,
8619 * but since I'm too lazy to fix that today, at least we can make
8620 * some small improvement.
8622 emitcode("mov", "b,#!constbyte",
8623 ((int) floatFromVal (AOP (right)->aopu.aop_lit)) + 1);
8627 emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE, FALSE));
8628 emitcode ("inc", "b");
8630 freeAsmop (right, NULL, ic, TRUE);
8631 aopOp (left, ic, FALSE, FALSE);
8632 aopOp (result, ic, FALSE, AOP_TYPE (left) == AOP_DPTR);
8634 /* now move the left to the result if they are not the
8636 if (!sameRegs (AOP (left), AOP (result)) &&
8637 AOP_SIZE (result) > 1)
8640 size = AOP_SIZE (result);
8642 _startLazyDPSEvaluation ();
8645 l = aopGet (AOP (left), offset, FALSE, TRUE, FALSE);
8646 if (*l == '@' && IS_AOP_PREG (result))
8649 emitcode ("mov", "a,%s", l);
8650 aopPut (AOP (result), "a", offset);
8653 aopPut (AOP (result), l, offset);
8656 _endLazyDPSEvaluation ();
8659 /* mov the highest order bit to OVR */
8660 tlbl = newiTempLabel (NULL);
8661 tlbl1 = newiTempLabel (NULL);
8663 size = AOP_SIZE (result);
8665 emitcode ("mov", "a,%s", aopGet (AOP (left), offset, FALSE, FALSE, FALSE));
8666 emitcode ("rlc", "a");
8667 emitcode ("mov", "ov,c");
8668 /* if it is only one byte then */
8671 l = aopGet (AOP (left), 0, FALSE, FALSE, TRUE);
8673 emitcode ("sjmp", "!tlabel", tlbl1->key + 100);
8674 emitcode ("", "!tlabeldef", tlbl->key + 100);
8675 emitcode ("mov", "c,ov");
8676 emitcode ("rrc", "a");
8677 emitcode ("", "!tlabeldef", tlbl1->key + 100);
8678 emitcode ("djnz", "b,!tlabel", tlbl->key + 100);
8679 aopPut (AOP (result), "a", 0);
8683 reAdjustPreg (AOP (result));
8684 emitcode ("sjmp", "!tlabel", tlbl1->key + 100);
8685 emitcode ("", "!tlabeldef", tlbl->key + 100);
8686 emitcode ("mov", "c,ov");
8687 _startLazyDPSEvaluation ();
8690 l = aopGet (AOP (result), offset, FALSE, FALSE, TRUE);
8692 emitcode ("rrc", "a");
8693 aopPut (AOP (result), "a", offset--);
8695 _endLazyDPSEvaluation ();
8696 reAdjustPreg (AOP (result));
8697 emitcode ("", "!tlabeldef", tlbl1->key + 100);
8698 emitcode ("djnz", "b,!tlabel", tlbl->key + 100);
8701 freeAsmop (left, NULL, ic, TRUE);
8702 freeAsmop (result, NULL, ic, TRUE);
8705 /*-----------------------------------------------------------------*/
8706 /* genRightShift - generate code for right shifting */
8707 /*-----------------------------------------------------------------*/
8709 genRightShift (iCode * ic)
8711 operand *right, *left, *result;
8715 symbol *tlbl, *tlbl1;
8717 D (emitcode (";", "genRightShift "););
8719 /* if signed then we do it the hard way preserve the
8720 sign bit moving it inwards */
8721 retype = getSpec (operandType (IC_RESULT (ic)));
8723 if (!SPEC_USIGN (retype))
8725 genSignedRightShift (ic);
8729 /* signed & unsigned types are treated the same : i.e. the
8730 signed is NOT propagated inwards : quoting from the
8731 ANSI - standard : "for E1 >> E2, is equivalent to division
8732 by 2**E2 if unsigned or if it has a non-negative value,
8733 otherwise the result is implementation defined ", MY definition
8734 is that the sign does not get propagated */
8736 right = IC_RIGHT (ic);
8737 left = IC_LEFT (ic);
8738 result = IC_RESULT (ic);
8740 aopOp (right, ic, FALSE, FALSE);
8742 #ifdef BETTER_LITERAL_SHIFT
8743 /* if the shift count is known then do it
8744 as efficiently as possible */
8745 if (AOP_TYPE (right) == AOP_LIT)
8747 if (genRightShiftLiteral (left, right, result, ic, 0))
8754 /* shift count is unknown then we have to form
8755 a loop get the loop count in B : Note: we take
8756 only the lower order byte since shifting
8757 more that 32 bits make no sense anyway, ( the
8758 largest size of an object can be only 32 bits ) */
8760 if (AOP_TYPE (right) == AOP_LIT)
8762 /* Really should be handled by genRightShiftLiteral,
8763 * but since I'm too lazy to fix that today, at least we can make
8764 * some small improvement.
8766 emitcode("mov", "b,#!constbyte",
8767 ((int) floatFromVal (AOP (right)->aopu.aop_lit)) + 1);
8771 emitcode ("mov", "b,%s", aopGet (AOP (right), 0, FALSE, FALSE, FALSE));
8772 emitcode ("inc", "b");
8774 freeAsmop (right, NULL, ic, TRUE);
8775 aopOp (left, ic, FALSE, FALSE);
8776 aopOp (result, ic, FALSE, AOP_TYPE (left) == AOP_DPTR);
8778 /* now move the left to the result if they are not the
8780 if (!sameRegs (AOP (left), AOP (result)) &&
8781 AOP_SIZE (result) > 1)
8784 size = AOP_SIZE (result);
8786 _startLazyDPSEvaluation ();
8789 l = aopGet (AOP (left), offset, FALSE, TRUE, FALSE);
8790 if (*l == '@' && IS_AOP_PREG (result))
8793 emitcode ("mov", "a,%s", l);
8794 aopPut (AOP (result), "a", offset);
8797 aopPut (AOP (result), l, offset);
8800 _endLazyDPSEvaluation ();
8803 tlbl = newiTempLabel (NULL);
8804 tlbl1 = newiTempLabel (NULL);
8805 size = AOP_SIZE (result);
8808 /* if it is only one byte then */
8811 l = aopGet (AOP (left), 0, FALSE, FALSE, TRUE);
8813 emitcode ("sjmp", "!tlabel", tlbl1->key + 100);
8814 emitcode ("", "!tlabeldef", tlbl->key + 100);
8816 emitcode ("rrc", "a");
8817 emitcode ("", "!tlabeldef", tlbl1->key + 100);
8818 emitcode ("djnz", "b,!tlabel", tlbl->key + 100);
8819 aopPut (AOP (result), "a", 0);
8823 reAdjustPreg (AOP (result));
8824 emitcode ("sjmp", "!tlabel", tlbl1->key + 100);
8825 emitcode ("", "!tlabeldef", tlbl->key + 100);
8827 _startLazyDPSEvaluation ();
8830 l = aopGet (AOP (result), offset, FALSE, FALSE, TRUE);
8832 emitcode ("rrc", "a");
8833 aopPut (AOP (result), "a", offset--);
8835 _endLazyDPSEvaluation ();
8836 reAdjustPreg (AOP (result));
8838 emitcode ("", "!tlabeldef", tlbl1->key + 100);
8839 emitcode ("djnz", "b,!tlabel", tlbl->key + 100);
8842 freeAsmop (left, NULL, ic, TRUE);
8843 freeAsmop (result, NULL, ic, TRUE);
8846 /*-----------------------------------------------------------------*/
8847 /* genUnpackBits - generates code for unpacking bits */
8848 /*-----------------------------------------------------------------*/
8850 genUnpackBits (operand * result, char *rname, int ptype)
8857 D (emitcode (";", "genUnpackBits ");
8860 etype = getSpec (operandType (result));
8862 /* read the first byte */
8868 emitcode ("mov", "a,@%s", rname);
8872 emitcode ("movx", "a,@%s", rname);
8876 emitcode ("movx", "a,@dptr");
8880 emitcode ("clr", "a");
8881 emitcode ("movc", "a,@a+dptr");
8885 emitcode ("lcall", "__gptrget");
8889 /* if we have bitdisplacement then it fits */
8890 /* into this byte completely or if length is */
8891 /* less than a byte */
8892 if ((shCnt = SPEC_BSTR (etype)) ||
8893 (SPEC_BLEN (etype) <= 8))
8896 /* shift right acc */
8899 emitcode ("anl", "a,#!constbyte",
8900 ((unsigned char) -1) >> (8 - SPEC_BLEN (etype)));
8901 aopPut (AOP (result), "a", offset);
8905 /* bit field did not fit in a byte */
8906 rlen = SPEC_BLEN (etype) - 8;
8907 aopPut (AOP (result), "a", offset++);
8916 emitcode ("inc", "%s", rname);
8917 emitcode ("mov", "a,@%s", rname);
8921 emitcode ("inc", "%s", rname);
8922 emitcode ("movx", "a,@%s", rname);
8926 emitcode ("inc", "dptr");
8927 emitcode ("movx", "a,@dptr");
8931 emitcode ("clr", "a");
8932 emitcode ("inc", "dptr");
8933 emitcode ("movc", "a,@a+dptr");
8937 emitcode ("inc", "dptr");
8938 emitcode ("lcall", "__gptrget");
8943 /* if we are done */
8947 aopPut (AOP (result), "a", offset++);
8953 emitcode ("anl", "a,#!constbyte", ((unsigned char) -1) >> (rlen));
8954 aopPut (AOP (result), "a", offset);
8961 /*-----------------------------------------------------------------*/
8962 /* genDataPointerGet - generates code when ptr offset is known */
8963 /*-----------------------------------------------------------------*/
8965 genDataPointerGet (operand * left,
8971 int size, offset = 0;
8972 aopOp (result, ic, TRUE, FALSE);
8974 /* get the string representation of the name */
8975 l = aopGet (AOP (left), 0, FALSE, TRUE, FALSE);
8976 size = AOP_SIZE (result);
8977 _startLazyDPSEvaluation ();
8981 sprintf (buffer, "(%s + %d)", l + 1, offset);
8983 sprintf (buffer, "%s", l + 1);
8984 aopPut (AOP (result), buffer, offset++);
8986 _endLazyDPSEvaluation ();
8988 freeAsmop (left, NULL, ic, TRUE);
8989 freeAsmop (result, NULL, ic, TRUE);
8992 /*-----------------------------------------------------------------*/
8993 /* genNearPointerGet - emitcode for near pointer fetch */
8994 /*-----------------------------------------------------------------*/
8996 genNearPointerGet (operand * left,
9004 sym_link *rtype, *retype, *letype;
9005 sym_link *ltype = operandType (left);
9008 rtype = operandType (result);
9009 retype = getSpec (rtype);
9010 letype = getSpec (ltype);
9012 aopOp (left, ic, FALSE, FALSE);
9014 /* if left is rematerialisable and
9015 result is not bit variable type and
9016 the left is pointer to data space i.e
9017 lower 128 bytes of space */
9018 if (AOP_TYPE (left) == AOP_IMMD &&
9019 !IS_BITVAR (retype) &&
9020 !IS_BITVAR (letype) &&
9021 DCL_TYPE (ltype) == POINTER)
9023 genDataPointerGet (left, result, ic);
9027 /* if the value is already in a pointer register
9028 then don't need anything more */
9029 if (!AOP_INPREG (AOP (left)))
9031 /* otherwise get a free pointer register */
9033 preg = getFreePtr (ic, &aop, FALSE);
9034 emitcode ("mov", "%s,%s",
9036 aopGet (AOP (left), 0, FALSE, TRUE, FALSE));
9040 rname = aopGet (AOP (left), 0, FALSE, FALSE, FALSE);
9042 freeAsmop (left, NULL, ic, TRUE);
9043 aopOp (result, ic, FALSE, FALSE);
9045 /* if bitfield then unpack the bits */
9046 if (IS_BITVAR (retype) || IS_BITVAR (letype))
9047 genUnpackBits (result, rname, POINTER);
9050 /* we have can just get the values */
9051 int size = AOP_SIZE (result);
9056 if (IS_AOP_PREG (result) || AOP_TYPE (result) == AOP_STK)
9059 emitcode ("mov", "a,@%s", rname);
9060 aopPut (AOP (result), "a", offset);
9064 sprintf (buffer, "@%s", rname);
9065 aopPut (AOP (result), buffer, offset);
9069 emitcode ("inc", "%s", rname);
9073 /* now some housekeeping stuff */
9076 /* we had to allocate for this iCode */
9077 if (pi) { /* post increment present */
9078 aopPut(AOP ( left ),rname,0);
9080 freeAsmop (NULL, aop, ic, TRUE);
9084 /* we did not allocate which means left
9085 already in a pointer register, then
9086 if size > 0 && this could be used again
9087 we have to point it back to where it
9089 if (AOP_SIZE (result) > 1 &&
9090 !OP_SYMBOL (left)->remat &&
9091 (OP_SYMBOL (left)->liveTo > ic->seq ||
9095 int size = AOP_SIZE (result) - 1;
9097 emitcode ("dec", "%s", rname);
9102 freeAsmop (result, NULL, ic, TRUE);
9103 if (pi) pi->generated = 1;
9106 /*-----------------------------------------------------------------*/
9107 /* genPagedPointerGet - emitcode for paged pointer fetch */
9108 /*-----------------------------------------------------------------*/
9110 genPagedPointerGet (operand * left,
9118 sym_link *rtype, *retype, *letype;
9120 rtype = operandType (result);
9121 retype = getSpec (rtype);
9122 letype = getSpec (operandType (left));
9123 aopOp (left, ic, FALSE, FALSE);
9125 /* if the value is already in a pointer register
9126 then don't need anything more */
9127 if (!AOP_INPREG (AOP (left)))
9129 /* otherwise get a free pointer register */
9131 preg = getFreePtr (ic, &aop, FALSE);
9132 emitcode ("mov", "%s,%s",
9134 aopGet (AOP (left), 0, FALSE, TRUE, FALSE));
9138 rname = aopGet (AOP (left), 0, FALSE, FALSE, FALSE);
9140 freeAsmop (left, NULL, ic, TRUE);
9141 aopOp (result, ic, FALSE, FALSE);
9143 /* if bitfield then unpack the bits */
9144 if (IS_BITVAR (retype) || IS_BITVAR (letype))
9145 genUnpackBits (result, rname, PPOINTER);
9148 /* we have can just get the values */
9149 int size = AOP_SIZE (result);
9155 emitcode ("movx", "a,@%s", rname);
9156 aopPut (AOP (result), "a", offset);
9161 emitcode ("inc", "%s", rname);
9165 /* now some housekeeping stuff */
9168 /* we had to allocate for this iCode */
9169 if (pi) aopPut ( AOP (left), rname, 0);
9170 freeAsmop (NULL, aop, ic, TRUE);
9174 /* we did not allocate which means left
9175 already in a pointer register, then
9176 if size > 0 && this could be used again
9177 we have to point it back to where it
9179 if (AOP_SIZE (result) > 1 &&
9180 !OP_SYMBOL (left)->remat &&
9181 (OP_SYMBOL (left)->liveTo > ic->seq ||
9185 int size = AOP_SIZE (result) - 1;
9187 emitcode ("dec", "%s", rname);
9192 freeAsmop (result, NULL, ic, TRUE);
9193 if (pi) pi->generated = 1;
9196 /*-----------------------------------------------------------------*/
9197 /* genFarPointerGet - gget value from far space */
9198 /*-----------------------------------------------------------------*/
9200 genFarPointerGet (operand * left,
9201 operand * result, iCode * ic, iCode *pi)
9203 int size, offset, dopi=1;
9204 sym_link *retype = getSpec (operandType (result));
9205 sym_link *letype = getSpec (operandType (left));
9206 D (emitcode (";", "genFarPointerGet");
9209 aopOp (left, ic, FALSE, FALSE);
9211 /* if the operand is already in dptr
9212 then we do nothing else we move the value to dptr */
9213 if (AOP_TYPE (left) != AOP_STR && !AOP_INDPTRn(left) )
9215 /* if this is remateriazable */
9216 if (AOP_TYPE (left) == AOP_IMMD)
9218 emitcode ("mov", "dptr,%s", aopGet (AOP (left), 0, TRUE, FALSE, FALSE));
9222 /* we need to get it byte by byte */
9223 _startLazyDPSEvaluation ();
9224 if (AOP_TYPE (left) != AOP_DPTR)
9226 emitcode ("mov", "dpl,%s", aopGet (AOP (left), 0, FALSE, FALSE, TRUE));
9227 emitcode ("mov", "dph,%s", aopGet (AOP (left), 1, FALSE, FALSE, TRUE));
9228 if (options.model == MODEL_FLAT24)
9229 emitcode ("mov", "dpx,%s", aopGet (AOP (left), 2, FALSE, FALSE, TRUE));
9233 /* We need to generate a load to DPTR indirect through DPTR. */
9234 D (emitcode (";", "genFarPointerGet -- indirection special case.");
9236 emitcode ("push", "%s", aopGet (AOP (left), 0, FALSE, TRUE, TRUE));
9237 emitcode ("push", "%s", aopGet (AOP (left), 1, FALSE, TRUE, TRUE));
9238 if (options.model == MODEL_FLAT24)
9239 emitcode ("mov", "dpx,%s", aopGet (AOP (left), 2, FALSE, FALSE, TRUE));
9240 emitcode ("pop", "dph");
9241 emitcode ("pop", "dpl");
9244 _endLazyDPSEvaluation ();
9247 /* so dptr know contains the address */
9248 aopOp (result, ic, FALSE, (AOP_INDPTRn(left) ? FALSE : TRUE));
9250 /* if bit then unpack */
9251 if (IS_BITVAR (retype) || IS_BITVAR (letype)) {
9252 if (AOP_INDPTRn(left)) {
9253 genSetDPTR(AOP(left)->aopu.dptr);
9255 genUnpackBits (result, "dptr", FPOINTER);
9256 if (AOP_INDPTRn(left)) {
9261 size = AOP_SIZE (result);
9264 if (AOP_INDPTRn(left) && AOP_USESDPTR(result)) {
9266 genSetDPTR(AOP(left)->aopu.dptr);
9267 emitcode ("movx", "a,@dptr");
9268 if (size || (dopi && pi && AOP_TYPE (left) != AOP_IMMD))
9269 emitcode ("inc", "dptr");
9271 aopPut (AOP (result), "a", offset++);
9274 _startLazyDPSEvaluation ();
9276 if (AOP_INDPTRn(left)) {
9277 genSetDPTR(AOP(left)->aopu.dptr);
9283 emitcode ("movx", "a,@dptr");
9284 if (size || (dopi && pi && AOP_TYPE (left) != AOP_IMMD))
9285 emitcode ("inc", "dptr");
9287 aopPut (AOP (result), "a", offset++);
9289 _endLazyDPSEvaluation ();
9292 if (dopi && pi && AOP_TYPE (left) != AOP_IMMD) {
9293 if (!AOP_INDPTRn(left)) {
9294 aopPut ( AOP (left), "dpl", 0);
9295 aopPut ( AOP (left), "dph", 1);
9296 if (options.model == MODEL_FLAT24)
9297 aopPut ( AOP (left), "dpx", 2);
9300 } else if ((OP_SYMBOL(left)->ruonly || AOP_INDPTRn(left)) &&
9301 AOP_SIZE(result) > 1 &&
9302 (OP_SYMBOL (left)->liveTo > ic->seq || ic->depth)) {
9304 size = AOP_SIZE (result) - 1;
9305 if (AOP_INDPTRn(left)) {
9306 genSetDPTR(AOP(left)->aopu.dptr);
9308 while (size--) emitcode ("lcall","__decdptr");
9309 if (AOP_INDPTRn(left)) {
9314 freeAsmop (left, NULL, ic, TRUE);
9315 freeAsmop (result, NULL, ic, TRUE);
9318 /*-----------------------------------------------------------------*/
9319 /* genCodePointerGet - get value from code space */
9320 /*-----------------------------------------------------------------*/
9322 genCodePointerGet (operand * left,
9323 operand * result, iCode * ic, iCode *pi)
9325 int size, offset, dopi=1;
9326 sym_link *retype = getSpec (operandType (result));
9328 aopOp (left, ic, FALSE, FALSE);
9330 /* if the operand is already in dptr
9331 then we do nothing else we move the value to dptr */
9332 if (AOP_TYPE (left) != AOP_STR && !AOP_INDPTRn(left))
9334 /* if this is remateriazable */
9335 if (AOP_TYPE (left) == AOP_IMMD)
9337 emitcode ("mov", "dptr,%s", aopGet (AOP (left), 0, TRUE, FALSE, FALSE));
9340 { /* we need to get it byte by byte */
9341 _startLazyDPSEvaluation ();
9342 if (AOP_TYPE (left) != AOP_DPTR)
9344 emitcode ("mov", "dpl,%s", aopGet (AOP (left), 0, FALSE, FALSE, TRUE));
9345 emitcode ("mov", "dph,%s", aopGet (AOP (left), 1, FALSE, FALSE, TRUE));
9346 if (options.model == MODEL_FLAT24)
9347 emitcode ("mov", "dpx,%s", aopGet (AOP (left), 2, FALSE, FALSE, TRUE));
9351 /* We need to generate a load to DPTR indirect through DPTR. */
9352 D (emitcode (";", "gencodePointerGet -- indirection special case.");
9354 emitcode ("push", "%s", aopGet (AOP (left), 0, FALSE, TRUE, TRUE));
9355 emitcode ("push", "%s", aopGet (AOP (left), 1, FALSE, TRUE, TRUE));
9356 if (options.model == MODEL_FLAT24)
9357 emitcode ("mov", "dpx,%s", aopGet (AOP (left), 2, FALSE, FALSE, TRUE));
9358 emitcode ("pop", "dph");
9359 emitcode ("pop", "dpl");
9362 _endLazyDPSEvaluation ();
9365 /* so dptr know contains the address */
9366 aopOp (result, ic, FALSE, (AOP_INDPTRn(left) ? FALSE : TRUE));
9368 /* if bit then unpack */
9369 if (IS_BITVAR (retype)) {
9370 if (AOP_INDPTRn(left)) {
9371 genSetDPTR(AOP(left)->aopu.dptr);
9373 genUnpackBits (result, "dptr", CPOINTER);
9374 if (AOP_INDPTRn(left)) {
9379 size = AOP_SIZE (result);
9381 if (AOP_INDPTRn(left) && AOP_USESDPTR(result)) {
9383 genSetDPTR(AOP(left)->aopu.dptr);
9384 emitcode ("clr", "a");
9385 emitcode ("movc", "a,@a+dptr");
9386 if (size || (dopi && pi && AOP_TYPE (left) != AOP_IMMD))
9387 emitcode ("inc", "dptr");
9389 aopPut (AOP (result), "a", offset++);
9392 _startLazyDPSEvaluation ();
9395 if (AOP_INDPTRn(left)) {
9396 genSetDPTR(AOP(left)->aopu.dptr);
9402 emitcode ("clr", "a");
9403 emitcode ("movc", "a,@a+dptr");
9404 if (size || (dopi && pi && AOP_TYPE (left) != AOP_IMMD))
9405 emitcode ("inc", "dptr");
9406 aopPut (AOP (result), "a", offset++);
9408 _endLazyDPSEvaluation ();
9411 if (dopi && pi && AOP_TYPE (left) != AOP_IMMD) {
9412 if (!AOP_INDPTRn(left)) {
9413 aopPut ( AOP (left), "dpl", 0);
9414 aopPut ( AOP (left), "dph", 1);
9415 if (options.model == MODEL_FLAT24)
9416 aopPut ( AOP (left), "dpx", 2);
9419 } else if ((OP_SYMBOL(left)->ruonly || AOP_INDPTRn(left)) &&
9420 AOP_SIZE(result) > 1 &&
9421 (OP_SYMBOL (left)->liveTo > ic->seq || ic->depth)) {
9423 size = AOP_SIZE (result) - 1;
9424 if (AOP_INDPTRn(left)) {
9425 genSetDPTR(AOP(left)->aopu.dptr);
9427 while (size--) emitcode ("lcall","__decdptr");
9428 if (AOP_INDPTRn(left)) {
9433 freeAsmop (left, NULL, ic, TRUE);
9434 freeAsmop (result, NULL, ic, TRUE);
9437 /*-----------------------------------------------------------------*/
9438 /* genGenPointerGet - gget value from generic pointer space */
9439 /*-----------------------------------------------------------------*/
9441 genGenPointerGet (operand * left,
9442 operand * result, iCode * ic, iCode * pi)
9445 sym_link *retype = getSpec (operandType (result));
9446 sym_link *letype = getSpec (operandType (left));
9448 D (emitcode (";", "genGenPointerGet "); );
9450 aopOp (left, ic, FALSE, (OP_SYMBOL(left)->ruonly ? FALSE : TRUE));
9452 /* if the operand is already in dptr
9453 then we do nothing else we move the value to dptr */
9454 if (AOP_TYPE (left) != AOP_STR)
9456 /* if this is remateriazable */
9457 if (AOP_TYPE (left) == AOP_IMMD)
9459 emitcode ("mov", "dptr,%s", aopGet (AOP (left), 0, TRUE, FALSE, FALSE));
9460 if (AOP(left)->aopu.aop_immd.from_cast_remat)
9461 emitcode ("mov", "b,%s",aopGet(AOP (left), AOP_SIZE(left)-1, FALSE, FALSE, FALSE));
9463 emitcode ("mov", "b,#%d", pointerCode (retype));
9466 { /* we need to get it byte by byte */
9467 _startLazyDPSEvaluation ();
9468 #if 0 // I see no point at all to this code.
9469 // So I yanked it. Kill at some future date if no bugs rear their heads.
9470 if (AOP(left)->type==AOP_DPTR2) {
9472 l=aopGet(AOP(left),0,FALSE,FALSE,TRUE);
9475 emitcode ("mov", "dpl,%s", l);
9476 l=aopGet(AOP(left),1,FALSE,FALSE,TRUE);
9479 emitcode ("mov", "dph,%s", l);
9480 if (options.model == MODEL_FLAT24) {
9481 l=aopGet(AOP(left),2,FALSE,FALSE,TRUE);
9484 emitcode ("mov", "dpx,%s", l);
9485 emitcode ("mov", "b,%s", aopGet (AOP(left),3,FALSE,FALSE,TRUE));
9487 emitcode ("mov", "b,%s", aopGet (AOP(left),2,FALSE,FALSE,TRUE));
9493 emitcode ("mov", "dpl,%s", aopGet (AOP(left),0,FALSE,FALSE,TRUE));
9494 emitcode ("mov", "dph,%s", aopGet (AOP(left),1,FALSE,FALSE,TRUE));
9495 if (options.model == MODEL_FLAT24) {
9496 emitcode ("mov", "dpx,%s", aopGet (AOP(left),2,FALSE,FALSE,TRUE));
9497 emitcode ("mov", "b,%s", aopGet (AOP(left),3,FALSE,FALSE,TRUE));
9499 emitcode ("mov", "b,%s", aopGet (AOP(left),2,FALSE,FALSE,TRUE));
9502 _endLazyDPSEvaluation ();
9506 /* so dptr-b now contains the address */
9508 aopOp (result, ic, FALSE, TRUE);
9511 /* if bit then unpack */
9512 if (IS_BITVAR (retype) || IS_BITVAR (letype))
9513 genUnpackBits (result, "dptr", GPOINTER);
9516 size = AOP_SIZE (result);
9523 emitcode("push", "b");
9524 emitcode ("lcall", "__gptrgetWord");
9525 aopPut (AOP (result), "b", offset++);
9526 aopPut (AOP (result), "a", offset++);
9527 emitcode("pop", "b");
9532 emitcode ("lcall", "__gptrget");
9533 aopPut (AOP (result), "a", offset++);
9536 if (size || (pi && AOP_TYPE (left) != AOP_IMMD))
9538 emitcode ("inc", "dptr");
9543 if (pi && AOP_TYPE (left) != AOP_IMMD) {
9544 aopPut ( AOP (left), "dpl", 0);
9545 aopPut ( AOP (left), "dph", 1);
9546 if (options.model == MODEL_FLAT24) {
9547 aopPut ( AOP (left), "dpx", 2);
9548 aopPut ( AOP (left), "b", 3);
9549 } else aopPut ( AOP (left), "b", 2);
9551 } else if (OP_SYMBOL(left)->ruonly && AOP_SIZE(result) > 1 &&
9552 (OP_SYMBOL (left)->liveTo > ic->seq || ic->depth)) {
9554 size = AOP_SIZE (result) - 1;
9555 while (size--) emitcode ("lcall","__decdptr");
9558 freeAsmop (left, NULL, ic, TRUE);
9559 freeAsmop (result, NULL, ic, TRUE);
9562 /*-----------------------------------------------------------------*/
9563 /* genPointerGet - generate code for pointer get */
9564 /*-----------------------------------------------------------------*/
9566 genPointerGet (iCode * ic, iCode *pi)
9568 operand *left, *result;
9569 sym_link *type, *etype;
9572 D (emitcode (";", "genPointerGet ");
9575 left = IC_LEFT (ic);
9576 result = IC_RESULT (ic);
9578 /* depending on the type of pointer we need to
9579 move it to the correct pointer register */
9580 type = operandType (left);
9581 etype = getSpec (type);
9582 /* if left is of type of pointer then it is simple */
9583 if (IS_PTR (type) && !IS_FUNC (type->next))
9584 p_type = DCL_TYPE (type);
9587 /* we have to go by the storage class */
9588 p_type = PTR_TYPE (SPEC_OCLS (etype));
9590 /* special case when cast remat */
9591 if (p_type == GPOINTER && OP_SYMBOL(left)->remat &&
9592 IS_CAST_ICODE(OP_SYMBOL(left)->rematiCode)) {
9593 left = IC_RIGHT(OP_SYMBOL(left)->rematiCode);
9594 type = operandType (left);
9595 p_type = DCL_TYPE (type);
9597 /* now that we have the pointer type we assign
9598 the pointer values */
9604 genNearPointerGet (left, result, ic, pi);
9608 genPagedPointerGet (left, result, ic, pi);
9612 genFarPointerGet (left, result, ic, pi);
9616 genCodePointerGet (left, result, ic, pi);
9620 genGenPointerGet (left, result, ic, pi);
9626 /*-----------------------------------------------------------------*/
9627 /* genPackBits - generates code for packed bit storage */
9628 /*-----------------------------------------------------------------*/
9630 genPackBits (sym_link * etype,
9632 char *rname, int p_type)
9640 blen = SPEC_BLEN (etype);
9641 bstr = SPEC_BSTR (etype);
9643 l = aopGet (AOP (right), offset++, FALSE, FALSE, TRUE);
9646 /* if the bit lenth is less than or */
9647 /* it exactly fits a byte then */
9648 if (SPEC_BLEN (etype) <= 8)
9650 shCount = SPEC_BSTR (etype);
9652 /* shift left acc */
9655 if (SPEC_BLEN (etype) < 8)
9656 { /* if smaller than a byte */
9662 emitcode ("mov", "b,a");
9663 emitcode ("mov", "a,@%s", rname);
9667 emitcode ("mov", "b,a");
9668 emitcode ("movx", "a,@dptr");
9672 emitcode ("push", "b");
9673 emitcode ("push", "acc");
9674 emitcode ("lcall", "__gptrget");
9675 emitcode ("pop", "b");
9679 emitcode ("anl", "a,#!constbyte", (unsigned char)
9680 ((unsigned char) (0xFF << (blen + bstr)) |
9681 (unsigned char) (0xFF >> (8 - bstr))));
9682 emitcode ("orl", "a,b");
9683 if (p_type == GPOINTER)
9684 emitcode ("pop", "b");
9691 emitcode ("mov", "@%s,a", rname);
9695 emitcode ("movx", "@dptr,a");
9699 emitcode ("lcall", "__gptrput");
9704 if (SPEC_BLEN (etype) <= 8)
9707 emitcode ("inc", "%s", rname);
9708 rLen = SPEC_BLEN (etype);
9710 /* now generate for lengths greater than one byte */
9714 l = aopGet (AOP (right), offset++, FALSE, TRUE, FALSE);
9726 emitcode ("mov", "@%s,a", rname);
9729 emitcode ("mov", "@%s,%s", rname, l);
9734 emitcode ("movx", "@dptr,a");
9739 emitcode ("lcall", "__gptrput");
9742 emitcode ("inc", "%s", rname);
9747 /* last last was not complete */
9750 /* save the byte & read byte */
9754 emitcode ("mov", "b,a");
9755 emitcode ("mov", "a,@%s", rname);
9759 emitcode ("mov", "b,a");
9760 emitcode ("movx", "a,@dptr");
9764 emitcode ("push", "b");
9765 emitcode ("push", "acc");
9766 emitcode ("lcall", "__gptrget");
9767 emitcode ("pop", "b");
9771 emitcode ("anl", "a,#!constbyte", ((unsigned char) -1 << rLen));
9772 emitcode ("orl", "a,b");
9775 if (p_type == GPOINTER)
9776 emitcode ("pop", "b");
9782 emitcode ("mov", "@%s,a", rname);
9786 emitcode ("movx", "@dptr,a");
9790 emitcode ("lcall", "__gptrput");
9794 /*-----------------------------------------------------------------*/
9795 /* genDataPointerSet - remat pointer to data space */
9796 /*-----------------------------------------------------------------*/
9798 genDataPointerSet (operand * right,
9802 int size, offset = 0;
9803 char *l, buffer[256];
9805 aopOp (right, ic, FALSE, FALSE);
9807 l = aopGet (AOP (result), 0, FALSE, TRUE, FALSE);
9808 size = AOP_SIZE (right);
9812 sprintf (buffer, "(%s + %d)", l + 1, offset);
9814 sprintf (buffer, "%s", l + 1);
9815 emitcode ("mov", "%s,%s", buffer,
9816 aopGet (AOP (right), offset++, FALSE, FALSE, FALSE));
9819 freeAsmop (right, NULL, ic, TRUE);
9820 freeAsmop (result, NULL, ic, TRUE);
9823 /*-----------------------------------------------------------------*/
9824 /* genNearPointerSet - emitcode for near pointer put */
9825 /*-----------------------------------------------------------------*/
9827 genNearPointerSet (operand * right,
9835 sym_link *retype, *letype;
9836 sym_link *ptype = operandType (result);
9838 retype = getSpec (operandType (right));
9839 letype = getSpec (ptype);
9841 aopOp (result, ic, FALSE, FALSE);
9843 /* if the result is rematerializable &
9844 in data space & not a bit variable */
9845 if (AOP_TYPE (result) == AOP_IMMD &&
9846 DCL_TYPE (ptype) == POINTER &&
9847 !IS_BITVAR (retype) &&
9848 !IS_BITVAR (letype))
9850 genDataPointerSet (right, result, ic);
9854 /* if the value is already in a pointer register
9855 then don't need anything more */
9856 if (!AOP_INPREG (AOP (result)))
9858 /* otherwise get a free pointer register */
9860 preg = getFreePtr (ic, &aop, FALSE);
9861 emitcode ("mov", "%s,%s",
9863 aopGet (AOP (result), 0, FALSE, TRUE, FALSE));
9867 rname = aopGet (AOP (result), 0, FALSE, FALSE, FALSE);
9869 aopOp (right, ic, FALSE, FALSE);
9871 /* if bitfield then unpack the bits */
9872 if (IS_BITVAR (retype) || IS_BITVAR (letype))
9873 genPackBits ((IS_BITVAR (retype) ? retype : letype), right, rname, POINTER);
9876 /* we have can just get the values */
9877 int size = AOP_SIZE (right);
9882 l = aopGet (AOP (right), offset, FALSE, TRUE, FALSE);
9886 emitcode ("mov", "@%s,a", rname);
9889 emitcode ("mov", "@%s,%s", rname, l);
9891 emitcode ("inc", "%s", rname);
9896 /* now some housekeeping stuff */
9899 /* we had to allocate for this iCode */
9900 if (pi) aopPut (AOP (result),rname,0);
9901 freeAsmop (NULL, aop, ic, TRUE);
9905 /* we did not allocate which means left
9906 already in a pointer register, then
9907 if size > 0 && this could be used again
9908 we have to point it back to where it
9910 if (AOP_SIZE (right) > 1 &&
9911 !OP_SYMBOL (result)->remat &&
9912 (OP_SYMBOL (result)->liveTo > ic->seq ||
9916 int size = AOP_SIZE (right) - 1;
9918 emitcode ("dec", "%s", rname);
9923 if (pi) pi->generated = 1;
9924 freeAsmop (result, NULL, ic, TRUE);
9925 freeAsmop (right, NULL, ic, TRUE);
9930 /*-----------------------------------------------------------------*/
9931 /* genPagedPointerSet - emitcode for Paged pointer put */
9932 /*-----------------------------------------------------------------*/
9934 genPagedPointerSet (operand * right,
9942 sym_link *retype, *letype;
9944 retype = getSpec (operandType (right));
9945 letype = getSpec (operandType (result));
9947 aopOp (result, ic, FALSE, FALSE);
9949 /* if the value is already in a pointer register
9950 then don't need anything more */
9951 if (!AOP_INPREG (AOP (result)))
9953 /* otherwise get a free pointer register */
9955 preg = getFreePtr (ic, &aop, FALSE);
9956 emitcode ("mov", "%s,%s",
9958 aopGet (AOP (result), 0, FALSE, TRUE, FALSE));
9962 rname = aopGet (AOP (result), 0, FALSE, FALSE, FALSE);
9964 aopOp (right, ic, FALSE, FALSE);
9966 /* if bitfield then unpack the bits */
9967 if (IS_BITVAR (retype) || IS_BITVAR (letype))
9968 genPackBits ((IS_BITVAR (retype) ? retype : letype), right, rname, PPOINTER);
9971 /* we have can just get the values */
9972 int size = AOP_SIZE (right);
9977 l = aopGet (AOP (right), offset, FALSE, TRUE, TRUE);
9980 emitcode ("movx", "@%s,a", rname);
9983 emitcode ("inc", "%s", rname);
9989 /* now some housekeeping stuff */
9992 if (pi) aopPut (AOP (result),rname,0);
9993 /* we had to allocate for this iCode */
9994 freeAsmop (NULL, aop, ic, TRUE);
9998 /* we did not allocate which means left
9999 already in a pointer register, then
10000 if size > 0 && this could be used again
10001 we have to point it back to where it
10003 if (AOP_SIZE (right) > 1 &&
10004 !OP_SYMBOL (result)->remat &&
10005 (OP_SYMBOL (result)->liveTo > ic->seq ||
10009 int size = AOP_SIZE (right) - 1;
10011 emitcode ("dec", "%s", rname);
10016 if (pi) pi->generated = 1;
10017 freeAsmop (result, NULL, ic, TRUE);
10018 freeAsmop (right, NULL, ic, TRUE);
10023 /*-----------------------------------------------------------------*/
10024 /* genFarPointerSet - set value from far space */
10025 /*-----------------------------------------------------------------*/
10027 genFarPointerSet (operand * right,
10028 operand * result, iCode * ic, iCode *pi)
10030 int size, offset, dopi=1;
10031 sym_link *retype = getSpec (operandType (right));
10032 sym_link *letype = getSpec (operandType (result));
10034 aopOp (result, ic, FALSE, FALSE);
10036 /* if the operand is already in dptr
10037 then we do nothing else we move the value to dptr */
10038 if (AOP_TYPE (result) != AOP_STR && !AOP_INDPTRn(result))
10040 /* if this is remateriazable */
10041 if (AOP_TYPE (result) == AOP_IMMD)
10042 emitcode ("mov", "dptr,%s", aopGet (AOP (result), 0, TRUE, FALSE, FALSE));
10045 /* we need to get it byte by byte */
10046 _startLazyDPSEvaluation ();
10047 if (AOP_TYPE (result) != AOP_DPTR)
10049 emitcode ("mov", "dpl,%s", aopGet (AOP (result), 0, FALSE, FALSE, TRUE));
10050 emitcode ("mov", "dph,%s", aopGet (AOP (result), 1, FALSE, FALSE, TRUE));
10051 if (options.model == MODEL_FLAT24)
10052 emitcode ("mov", "dpx,%s", aopGet (AOP (result), 2, FALSE, FALSE, TRUE));
10056 /* We need to generate a load to DPTR indirect through DPTR. */
10057 D (emitcode (";", "genFarPointerSet -- indirection special case.");
10059 emitcode ("push", "%s", aopGet (AOP (result), 0, FALSE, TRUE, TRUE));
10060 emitcode ("push", "%s", aopGet (AOP (result), 1, FALSE, TRUE, TRUE));
10061 if (options.model == MODEL_FLAT24)
10062 emitcode ("mov", "dpx,%s", aopGet (AOP (result), 2, FALSE, FALSE, TRUE));
10063 emitcode ("pop", "dph");
10064 emitcode ("pop", "dpl");
10067 _endLazyDPSEvaluation ();
10070 /* so dptr know contains the address */
10071 aopOp (right, ic, FALSE, (AOP_INDPTRn(result) ? FALSE : TRUE));
10073 /* if bit then unpack */
10074 if (IS_BITVAR (retype) || IS_BITVAR (letype)) {
10075 if (AOP_INDPTRn(result)) {
10076 genSetDPTR(AOP(result)->aopu.dptr);
10078 genPackBits ((IS_BITVAR (retype) ? retype : letype), right, "dptr", FPOINTER);
10079 if (AOP_INDPTRn(result)) {
10083 size = AOP_SIZE (right);
10085 if (AOP_INDPTRn(result) && AOP_USESDPTR(right)) {
10087 char *l = aopGet (AOP (right), offset++, FALSE, FALSE, TRUE);
10090 genSetDPTR(AOP(result)->aopu.dptr);
10091 emitcode ("movx", "@dptr,a");
10092 if (size || (dopi && pi && AOP_TYPE (result) != AOP_IMMD))
10093 emitcode ("inc", "dptr");
10097 _startLazyDPSEvaluation ();
10099 char *l = aopGet (AOP (right), offset++, FALSE, FALSE, TRUE);
10102 if (AOP_INDPTRn(result)) {
10103 genSetDPTR(AOP(result)->aopu.dptr);
10109 emitcode ("movx", "@dptr,a");
10110 if (size || (dopi && pi && AOP_TYPE (result) != AOP_IMMD))
10111 emitcode ("inc", "dptr");
10113 _endLazyDPSEvaluation ();
10117 if (dopi && pi && AOP_TYPE (result) != AOP_IMMD) {
10118 if (!AOP_INDPTRn(result)) {
10119 aopPut (AOP(result),"dpl",0);
10120 aopPut (AOP(result),"dph",1);
10121 if (options.model == MODEL_FLAT24)
10122 aopPut (AOP(result),"dpx",2);
10125 } else if ((OP_SYMBOL(result)->ruonly || AOP_INDPTRn(result)) &&
10126 AOP_SIZE(right) > 1 &&
10127 (OP_SYMBOL (result)->liveTo > ic->seq || ic->depth)) {
10129 size = AOP_SIZE (right) - 1;
10130 if (AOP_INDPTRn(result)) {
10131 genSetDPTR(AOP(result)->aopu.dptr);
10133 while (size--) emitcode ("lcall","__decdptr");
10134 if (AOP_INDPTRn(result)) {
10138 freeAsmop (result, NULL, ic, TRUE);
10139 freeAsmop (right, NULL, ic, TRUE);
10142 /*-----------------------------------------------------------------*/
10143 /* genGenPointerSet - set value from generic pointer space */
10144 /*-----------------------------------------------------------------*/
10146 genGenPointerSet (operand * right,
10147 operand * result, iCode * ic, iCode *pi)
10150 sym_link *retype = getSpec (operandType (right));
10151 sym_link *letype = getSpec (operandType (result));
10153 aopOp (result, ic, FALSE, OP_SYMBOL(result)->ruonly ? FALSE : TRUE);
10155 /* if the operand is already in dptr
10156 then we do nothing else we move the value to dptr */
10157 if (AOP_TYPE (result) != AOP_STR)
10159 _startLazyDPSEvaluation ();
10160 /* if this is remateriazable */
10161 if (AOP_TYPE (result) == AOP_IMMD)
10163 emitcode ("mov", "dptr,%s", aopGet (AOP (result), 0, TRUE, FALSE, FALSE));
10164 if (AOP(result)->aopu.aop_immd.from_cast_remat)
10165 emitcode ("mov", "b,%s",aopGet(AOP (result), AOP_SIZE(result)-1, FALSE, FALSE, FALSE));
10167 emitcode ("mov", "b,%s + 1", aopGet (AOP (result), 0, TRUE, FALSE, FALSE));
10170 { /* we need to get it byte by byte */
10171 emitcode ("mov", "dpl,%s", aopGet (AOP (result), 0, FALSE, FALSE, TRUE));
10172 emitcode ("mov", "dph,%s", aopGet (AOP (result), 1, FALSE, FALSE, TRUE));
10173 if (options.model == MODEL_FLAT24) {
10174 emitcode ("mov", "dpx,%s", aopGet (AOP (result), 2, FALSE, FALSE, TRUE));
10175 emitcode ("mov", "b,%s", aopGet (AOP (result), 3, FALSE, FALSE, TRUE));
10177 emitcode ("mov", "b,%s", aopGet (AOP (result), 2, FALSE, FALSE, TRUE));
10180 _endLazyDPSEvaluation ();
10182 /* so dptr know contains the address */
10183 aopOp (right, ic, FALSE, TRUE);
10185 /* if bit then unpack */
10186 if (IS_BITVAR (retype) || IS_BITVAR (letype))
10187 genPackBits ((IS_BITVAR (retype) ? retype : letype), right, "dptr", GPOINTER);
10190 size = AOP_SIZE (right);
10193 _startLazyDPSEvaluation ();
10196 char *l = aopGet (AOP (right), offset++, FALSE, FALSE, TRUE);
10202 emitcode ("lcall", "__gptrput");
10203 if (size || (pi && AOP_TYPE (result) != AOP_IMMD))
10204 emitcode ("inc", "dptr");
10206 _endLazyDPSEvaluation ();
10209 if (pi && AOP_TYPE (result) != AOP_IMMD) {
10210 aopPut (AOP(result),"dpl",0);
10211 aopPut (AOP(result),"dph",1);
10212 if (options.model == MODEL_FLAT24) {
10213 aopPut (AOP(result),"dpx",2);
10214 aopPut (AOP(result),"b",3);
10216 aopPut (AOP(result),"b",2);
10219 } else if (OP_SYMBOL(result)->ruonly && AOP_SIZE(right) > 1 &&
10220 (OP_SYMBOL (result)->liveTo > ic->seq || ic->depth)) {
10222 size = AOP_SIZE (right) - 1;
10223 while (size--) emitcode ("lcall","__decdptr");
10225 freeAsmop (result, NULL, ic, TRUE);
10226 freeAsmop (right, NULL, ic, TRUE);
10229 /*-----------------------------------------------------------------*/
10230 /* genPointerSet - stores the value into a pointer location */
10231 /*-----------------------------------------------------------------*/
10233 genPointerSet (iCode * ic, iCode *pi)
10235 operand *right, *result;
10236 sym_link *type, *etype;
10239 D (emitcode (";", "genPointerSet ");
10242 right = IC_RIGHT (ic);
10243 result = IC_RESULT (ic);
10245 /* depending on the type of pointer we need to
10246 move it to the correct pointer register */
10247 type = operandType (result);
10248 etype = getSpec (type);
10249 /* if left is of type of pointer then it is simple */
10250 if (IS_PTR (type) && !IS_FUNC (type->next))
10252 p_type = DCL_TYPE (type);
10256 /* we have to go by the storage class */
10257 p_type = PTR_TYPE (SPEC_OCLS (etype));
10259 /* special case when cast remat */
10260 if (p_type == GPOINTER && OP_SYMBOL(result)->remat &&
10261 IS_CAST_ICODE(OP_SYMBOL(result)->rematiCode)) {
10262 result = IC_RIGHT(OP_SYMBOL(result)->rematiCode);
10263 type = operandType (result);
10264 p_type = DCL_TYPE (type);
10267 /* now that we have the pointer type we assign
10268 the pointer values */
10274 genNearPointerSet (right, result, ic, pi);
10278 genPagedPointerSet (right, result, ic, pi);
10282 genFarPointerSet (right, result, ic, pi);
10286 genGenPointerSet (right, result, ic, pi);
10290 werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
10291 "genPointerSet: illegal pointer type");
10296 /*-----------------------------------------------------------------*/
10297 /* genIfx - generate code for Ifx statement */
10298 /*-----------------------------------------------------------------*/
10300 genIfx (iCode * ic, iCode * popIc)
10302 operand *cond = IC_COND (ic);
10305 D (emitcode (";", "genIfx "););
10307 aopOp (cond, ic, FALSE, FALSE);
10309 /* get the value into acc */
10310 if (AOP_TYPE (cond) != AOP_CRY)
10314 /* the result is now in the accumulator */
10315 freeAsmop (cond, NULL, ic, TRUE);
10317 /* if there was something to be popped then do it */
10321 /* if the condition is a bit variable */
10322 if (isbit && IS_ITEMP (cond) &&
10324 genIfxJump (ic, SPIL_LOC (cond)->rname);
10325 else if (isbit && !IS_ITEMP (cond))
10326 genIfxJump (ic, OP_SYMBOL (cond)->rname);
10328 genIfxJump (ic, "a");
10333 /*-----------------------------------------------------------------*/
10334 /* genAddrOf - generates code for address of */
10335 /*-----------------------------------------------------------------*/
10337 genAddrOf (iCode * ic)
10339 symbol *sym = OP_SYMBOL (IC_LEFT (ic));
10342 D (emitcode (";", "genAddrOf ");
10345 aopOp (IC_RESULT (ic), ic, FALSE, FALSE);
10347 /* if the operand is on the stack then we
10348 need to get the stack offset of this
10350 if (sym->onStack) {
10352 /* if 10 bit stack */
10353 if (options.stack10bit) {
10355 tsprintf(buff,"#!constbyte",(options.stack_loc >> 16) & 0xff);
10356 /* if it has an offset then we need to compute it */
10357 /* emitcode ("subb", "a,#!constbyte", */
10358 /* -((sym->stack < 0) ? */
10359 /* ((short) (sym->stack - _G.nRegsSaved)) : */
10360 /* ((short) sym->stack)) & 0xff); */
10361 /* emitcode ("mov","b,a"); */
10362 /* emitcode ("mov","a,#!constbyte",(-((sym->stack < 0) ? */
10363 /* ((short) (sym->stack - _G.nRegsSaved)) : */
10364 /* ((short) sym->stack)) >> 8) & 0xff); */
10366 emitcode ("mov", "a,_bpx");
10367 emitcode ("add", "a,#!constbyte", ((sym->stack < 0) ?
10368 ((char) (sym->stack - _G.nRegsSaved)) :
10369 ((char) sym->stack )) & 0xff);
10370 emitcode ("mov", "b,a");
10371 emitcode ("mov", "a,_bpx+1");
10372 emitcode ("addc","a,#!constbyte", (((sym->stack < 0) ?
10373 ((short) (sym->stack - _G.nRegsSaved)) :
10374 ((short) sym->stack )) >> 8) & 0xff);
10375 aopPut (AOP (IC_RESULT (ic)), "b", 0);
10376 aopPut (AOP (IC_RESULT (ic)), "a", 1);
10377 aopPut (AOP (IC_RESULT (ic)), buff, 2);
10379 /* we can just move _bp */
10380 aopPut (AOP (IC_RESULT (ic)), "_bpx", 0);
10381 aopPut (AOP (IC_RESULT (ic)), "_bpx+1", 1);
10382 aopPut (AOP (IC_RESULT (ic)), buff, 2);
10385 /* if it has an offset then we need to compute it */
10387 emitcode ("mov", "a,_bp");
10388 emitcode ("add", "a,#!constbyte", ((char) sym->stack & 0xff));
10389 aopPut (AOP (IC_RESULT (ic)), "a", 0);
10391 /* we can just move _bp */
10392 aopPut (AOP (IC_RESULT (ic)), "_bp", 0);
10394 /* fill the result with zero */
10395 size = AOP_SIZE (IC_RESULT (ic)) - 1;
10398 if (options.stack10bit && size < (FPTRSIZE - 1)) {
10400 "*** warning: pointer to stack var truncated.\n");
10405 aopPut (AOP (IC_RESULT (ic)), zero, offset++);
10411 /* object not on stack then we need the name */
10412 size = AOP_SIZE (IC_RESULT (ic));
10417 char s[SDCC_NAME_MAX];
10421 tsprintf(s,"!his",sym->rname);
10424 tsprintf(s,"!hihis",sym->rname);
10427 tsprintf(s,"!hihihis",sym->rname);
10429 default: /* should not need this (just in case) */
10430 sprintf (s, "#(%s >> %d)",
10435 sprintf (s, "#%s", sym->rname);
10436 aopPut (AOP (IC_RESULT (ic)), s, offset++);
10440 freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
10444 /*-----------------------------------------------------------------*/
10445 /* genArrayInit - generates code for address of */
10446 /*-----------------------------------------------------------------*/
10448 genArrayInit (iCode * ic)
10450 literalList *iLoop;
10452 int elementSize = 0, eIndex;
10453 unsigned val, lastVal;
10455 operand *left=IC_LEFT(ic);
10457 D (emitcode (";", "genArrayInit "););
10459 aopOp (IC_LEFT(ic), ic, FALSE, FALSE);
10461 if (AOP_TYPE(IC_LEFT(ic)) == AOP_IMMD)
10463 // Load immediate value into DPTR.
10464 emitcode("mov", "dptr, %s",
10465 aopGet(AOP(IC_LEFT(ic)), 0, TRUE, FALSE, TRUE));
10467 else if (AOP_TYPE(IC_LEFT(ic)) != AOP_DPTR)
10470 werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
10471 "Unexpected operand to genArrayInit.\n");
10474 // a regression because of SDCCcse.c:1.52
10475 emitcode ("mov", "dpl,%s", aopGet (AOP (left), 0, FALSE, FALSE, TRUE));
10476 emitcode ("mov", "dph,%s", aopGet (AOP (left), 1, FALSE, FALSE, TRUE));
10477 if (options.model == MODEL_FLAT24)
10478 emitcode ("mov", "dpx,%s", aopGet (AOP (left), 2, FALSE, FALSE, TRUE));
10482 type = operandType(IC_LEFT(ic));
10484 if (type && type->next)
10486 elementSize = getSize(type->next);
10490 werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
10491 "can't determine element size in genArrayInit.\n");
10495 iLoop = IC_ARRAYILIST(ic);
10500 bool firstpass = TRUE;
10502 emitcode(";", "store %d x 0x%x to DPTR (element size %d)",
10503 iLoop->count, (int)iLoop->literalValue, elementSize);
10509 symbol *tlbl = NULL;
10511 count = ix > 256 ? 256 : ix;
10515 tlbl = newiTempLabel (NULL);
10516 if (firstpass || (count & 0xff))
10518 emitcode("mov", "b, #!constbyte", count & 0xff);
10521 emitcode ("", "!tlabeldef", tlbl->key + 100);
10526 for (eIndex = 0; eIndex < elementSize; eIndex++)
10528 val = (((int)iLoop->literalValue) >> (eIndex * 8)) & 0xff;
10529 if (val != lastVal)
10531 emitcode("mov", "a, #!constbyte", val);
10535 emitcode("movx", "@dptr, a");
10536 emitcode("inc", "dptr");
10541 emitcode("djnz", "b, !tlabel", tlbl->key + 100);
10547 iLoop = iLoop->next;
10550 freeAsmop (IC_LEFT(ic), NULL, ic, TRUE);
10553 /*-----------------------------------------------------------------*/
10554 /* genFarFarAssign - assignment when both are in far space */
10555 /*-----------------------------------------------------------------*/
10557 genFarFarAssign (operand * result, operand * right, iCode * ic)
10559 int size = AOP_SIZE (right);
10561 symbol *rSym = NULL;
10565 /* quick & easy case. */
10566 D(emitcode(";","genFarFarAssign (1 byte case)"););
10567 MOVA(aopGet(AOP(right), 0, FALSE, FALSE, TRUE));
10568 freeAsmop (right, NULL, ic, FALSE);
10569 /* now assign DPTR to result */
10571 aopOp(result, ic, FALSE, FALSE);
10573 aopPut(AOP(result), "a", 0);
10574 freeAsmop(result, NULL, ic, FALSE);
10578 /* See if we've got an underlying symbol to abuse. */
10579 if (IS_SYMOP(result) && OP_SYMBOL(result))
10581 if (IS_TRUE_SYMOP(result))
10583 rSym = OP_SYMBOL(result);
10585 else if (IS_ITEMP(result) && OP_SYMBOL(result)->isspilt && OP_SYMBOL(result)->usl.spillLoc)
10587 rSym = OP_SYMBOL(result)->usl.spillLoc;
10591 if (size > 1 && rSym && rSym->rname && !rSym->onStack)
10593 /* We can use the '390 auto-toggle feature to good effect here. */
10595 D(emitcode(";","genFarFarAssign (390 auto-toggle fun)"););
10596 emitcode("mov", "dps,#!constbyte",0x21); /* Select DPTR2 & auto-toggle. */
10597 emitcode ("mov", "dptr,#%s", rSym->rname);
10598 /* DP2 = result, DP1 = right, DP1 is current. */
10601 emitcode("movx", "a,@dptr");
10602 emitcode("movx", "@dptr,a");
10605 emitcode("inc", "dptr");
10606 emitcode("inc", "dptr");
10609 emitcode("mov", "dps,#0");
10610 freeAsmop (right, NULL, ic, FALSE);
10612 some alternative code for processors without auto-toggle
10613 no time to test now, so later well put in...kpb
10614 D(emitcode(";","genFarFarAssign (dual-dptr fun)"););
10615 emitcode("mov", "dps,#1"); /* Select DPTR2. */
10616 emitcode ("mov", "dptr,#%s", rSym->rname);
10617 /* DP2 = result, DP1 = right, DP1 is current. */
10621 emitcode("movx", "a,@dptr");
10623 emitcode("inc", "dptr");
10624 emitcode("inc", "dps");
10625 emitcode("movx", "@dptr,a");
10627 emitcode("inc", "dptr");
10628 emitcode("inc", "dps");
10630 emitcode("mov", "dps,#0");
10631 freeAsmop (right, NULL, ic, FALSE);
10636 D (emitcode (";", "genFarFarAssign"););
10637 aopOp (result, ic, TRUE, TRUE);
10639 _startLazyDPSEvaluation ();
10643 aopPut (AOP (result),
10644 aopGet (AOP (right), offset, FALSE, FALSE, FALSE), offset);
10647 _endLazyDPSEvaluation ();
10648 freeAsmop (result, NULL, ic, FALSE);
10649 freeAsmop (right, NULL, ic, FALSE);
10653 /*-----------------------------------------------------------------*/
10654 /* genAssign - generate code for assignment */
10655 /*-----------------------------------------------------------------*/
10657 genAssign (iCode * ic)
10659 operand *result, *right;
10661 unsigned long lit = 0L;
10663 D (emitcode (";", "genAssign ");
10666 result = IC_RESULT (ic);
10667 right = IC_RIGHT (ic);
10669 /* if they are the same */
10670 if (operandsEqu (IC_RESULT (ic), IC_RIGHT (ic)))
10673 aopOp (right, ic, FALSE, FALSE);
10675 emitcode (";", "genAssign: resultIsFar = %s",
10676 isOperandInFarSpace (result) ?
10679 /* special case both in far space */
10680 if ((AOP_TYPE (right) == AOP_DPTR ||
10681 AOP_TYPE (right) == AOP_DPTR2) &&
10682 /* IS_TRUE_SYMOP(result) && */
10683 isOperandInFarSpace (result))
10685 genFarFarAssign (result, right, ic);
10689 aopOp (result, ic, TRUE, FALSE);
10691 /* if they are the same registers */
10692 if (sameRegs (AOP (right), AOP (result)))
10695 /* if the result is a bit */
10696 if (AOP_TYPE (result) == AOP_CRY) /* works only for true symbols */
10698 /* if the right size is a literal then
10699 we know what the value is */
10700 if (AOP_TYPE (right) == AOP_LIT)
10702 if (((int) operandLitValue (right)))
10703 aopPut (AOP (result), one, 0);
10705 aopPut (AOP (result), zero, 0);
10709 /* the right is also a bit variable */
10710 if (AOP_TYPE (right) == AOP_CRY)
10712 emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
10713 aopPut (AOP (result), "c", 0);
10717 /* we need to or */
10719 aopPut (AOP (result), "a", 0);
10723 /* bit variables done */
10725 size = AOP_SIZE (result);
10727 if (AOP_TYPE (right) == AOP_LIT)
10728 lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit);
10731 (AOP_TYPE (result) != AOP_REG) &&
10732 (AOP_TYPE (right) == AOP_LIT) &&
10733 !IS_FLOAT (operandType (right)))
10735 _startLazyDPSEvaluation ();
10736 while (size && ((unsigned int) (lit >> (offset * 8)) != 0))
10738 aopPut (AOP (result),
10739 aopGet (AOP (right), offset, FALSE, FALSE, TRUE),
10744 /* And now fill the rest with zeros. */
10747 emitcode ("clr", "a");
10751 aopPut (AOP (result), "a", offset++);
10753 _endLazyDPSEvaluation ();
10757 _startLazyDPSEvaluation ();
10760 aopPut (AOP (result),
10761 aopGet (AOP (right), offset, FALSE, FALSE, FALSE),
10765 _endLazyDPSEvaluation ();
10769 freeAsmop (right, NULL, ic, FALSE);
10770 freeAsmop (result, NULL, ic, TRUE);
10773 /*-----------------------------------------------------------------*/
10774 /* genJumpTab - generates code for jump table */
10775 /*-----------------------------------------------------------------*/
10777 genJumpTab (iCode * ic)
10782 D (emitcode (";", "genJumpTab ");
10785 aopOp (IC_JTCOND (ic), ic, FALSE, FALSE);
10786 /* get the condition into accumulator */
10787 l = aopGet (AOP (IC_JTCOND (ic)), 0, FALSE, FALSE, TRUE);
10789 /* multiply by four! */
10790 emitcode ("add", "a,acc");
10791 emitcode ("add", "a,acc");
10792 freeAsmop (IC_JTCOND (ic), NULL, ic, TRUE);
10794 jtab = newiTempLabel (NULL);
10795 emitcode ("mov", "dptr,#!tlabel", jtab->key + 100);
10796 emitcode ("jmp", "@a+dptr");
10797 emitcode ("", "!tlabeldef", jtab->key + 100);
10798 /* now generate the jump labels */
10799 for (jtab = setFirstItem (IC_JTLABELS (ic)); jtab;
10800 jtab = setNextItem (IC_JTLABELS (ic)))
10801 emitcode ("ljmp", "!tlabel", jtab->key + 100);
10805 /*-----------------------------------------------------------------*/
10806 /* genCast - gen code for casting */
10807 /*-----------------------------------------------------------------*/
10809 genCast (iCode * ic)
10811 operand *result = IC_RESULT (ic);
10812 sym_link *ctype = operandType (IC_LEFT (ic));
10813 sym_link *rtype = operandType (IC_RIGHT (ic));
10814 operand *right = IC_RIGHT (ic);
10817 D (emitcode (";", "genCast ");
10820 /* if they are equivalent then do nothing */
10821 if (operandsEqu (IC_RESULT (ic), IC_RIGHT (ic)))
10824 aopOp (right, ic, FALSE, FALSE);
10825 aopOp (result, ic, FALSE, AOP_TYPE (right) == AOP_DPTR);
10827 /* if the result is a bit */
10828 // if (AOP_TYPE (result) == AOP_CRY) /* works only for true symbols */
10829 if (IS_BITVAR(OP_SYMBOL(result)->type))
10831 /* if the right size is a literal then
10832 we know what the value is */
10833 if (AOP_TYPE (right) == AOP_LIT)
10835 if (((int) operandLitValue (right)))
10836 aopPut (AOP (result), one, 0);
10838 aopPut (AOP (result), zero, 0);
10843 /* the right is also a bit variable */
10844 if (AOP_TYPE (right) == AOP_CRY)
10846 emitcode ("mov", "c,%s", AOP (right)->aopu.aop_dir);
10847 aopPut (AOP (result), "c", 0);
10851 /* we need to or */
10853 aopPut (AOP (result), "a", 0);
10857 /* if they are the same size : or less */
10858 if (AOP_SIZE (result) <= AOP_SIZE (right))
10861 /* if they are in the same place */
10862 if (sameRegs (AOP (right), AOP (result)))
10865 /* if they in different places then copy */
10866 size = AOP_SIZE (result);
10868 _startLazyDPSEvaluation ();
10871 aopPut (AOP (result),
10872 aopGet (AOP (right), offset, FALSE, FALSE, FALSE),
10876 _endLazyDPSEvaluation ();
10881 /* if the result is of type pointer */
10882 if (IS_PTR (ctype))
10886 sym_link *type = operandType (right);
10888 /* pointer to generic pointer */
10889 if (IS_GENPTR (ctype))
10893 p_type = DCL_TYPE (type);
10897 #if OLD_CAST_BEHAVIOR
10898 /* KV: we are converting a non-pointer type to
10899 * a generic pointer. This (ifdef'd out) code
10900 * says that the resulting generic pointer
10901 * should have the same class as the storage
10902 * location of the non-pointer variable.
10904 * For example, converting an int (which happens
10905 * to be stored in DATA space) to a pointer results
10906 * in a DATA generic pointer; if the original int
10907 * in XDATA space, so will be the resulting pointer.
10909 * I don't like that behavior, and thus this change:
10910 * all such conversions will be forced to XDATA and
10911 * throw a warning. If you want some non-XDATA
10912 * type, or you want to suppress the warning, you
10913 * must go through an intermediate cast, like so:
10915 * char _generic *gp = (char _xdata *)(intVar);
10917 sym_link *etype = getSpec (type);
10919 /* we have to go by the storage class */
10920 if (SPEC_OCLS (etype) != generic)
10922 p_type = PTR_TYPE (SPEC_OCLS (etype));
10927 /* Converting unknown class (i.e. register variable)
10928 * to generic pointer. This is not good, but
10929 * we'll make a guess (and throw a warning).
10932 werror (W_INT_TO_GEN_PTR_CAST);
10936 /* the first two bytes are known */
10937 size = GPTRSIZE - 1;
10939 _startLazyDPSEvaluation ();
10942 aopPut (AOP (result),
10943 aopGet (AOP (right), offset, FALSE, FALSE, FALSE),
10947 _endLazyDPSEvaluation ();
10949 /* the last byte depending on type */
10951 int gpVal = pointerTypeToGPByte(p_type, NULL, NULL);
10956 // pointerTypeToGPByte will have bitched.
10960 sprintf(gpValStr, "#0x%d", gpVal);
10961 aopPut (AOP (result), gpValStr, GPTRSIZE - 1);
10966 /* just copy the pointers */
10967 size = AOP_SIZE (result);
10969 _startLazyDPSEvaluation ();
10972 aopPut (AOP (result),
10973 aopGet (AOP (right), offset, FALSE, FALSE, FALSE),
10977 _endLazyDPSEvaluation ();
10981 /* so we now know that the size of destination is greater
10982 than the size of the source */
10983 /* we move to result for the size of source */
10984 size = AOP_SIZE (right);
10986 _startLazyDPSEvaluation ();
10989 aopPut (AOP (result),
10990 aopGet (AOP (right), offset, FALSE, FALSE, FALSE),
10994 _endLazyDPSEvaluation ();
10996 /* now depending on the sign of the source && destination */
10997 size = AOP_SIZE (result) - AOP_SIZE (right);
10998 /* if unsigned or not an integral type */
10999 /* also, if the source is a bit, we don't need to sign extend, because
11000 * it can't possibly have set the sign bit.
11002 if (SPEC_USIGN (rtype) || !IS_SPEC (rtype) || AOP_TYPE (right) == AOP_CRY)
11006 aopPut (AOP (result), zero, offset++);
11011 /* we need to extend the sign :{ */
11012 char *l = aopGet (AOP (right), AOP_SIZE (right) - 1,
11013 FALSE, FALSE, TRUE);
11015 emitcode ("rlc", "a");
11016 emitcode ("subb", "a,acc");
11018 aopPut (AOP (result), "a", offset++);
11021 /* we are done hurray !!!! */
11024 freeAsmop (right, NULL, ic, TRUE);
11025 freeAsmop (result, NULL, ic, TRUE);
11029 /*-----------------------------------------------------------------*/
11030 /* genDjnz - generate decrement & jump if not zero instrucion */
11031 /*-----------------------------------------------------------------*/
11033 genDjnz (iCode * ic, iCode * ifx)
11035 symbol *lbl, *lbl1;
11039 /* if the if condition has a false label
11040 then we cannot save */
11041 if (IC_FALSE (ifx))
11044 /* if the minus is not of the form
11046 if (!isOperandEqual (IC_RESULT (ic), IC_LEFT (ic)) ||
11047 !IS_OP_LITERAL (IC_RIGHT (ic)))
11050 if (operandLitValue (IC_RIGHT (ic)) != 1)
11053 /* if the size of this greater than one then no
11055 if (getSize (operandType (IC_RESULT (ic))) > 1)
11058 /* otherwise we can save BIG */
11059 D(emitcode(";", "genDjnz"););
11061 lbl = newiTempLabel (NULL);
11062 lbl1 = newiTempLabel (NULL);
11064 aopOp (IC_RESULT (ic), ic, FALSE, FALSE);
11066 if (AOP_NEEDSACC(IC_RESULT(ic)))
11068 /* If the result is accessed indirectly via
11069 * the accumulator, we must explicitly write
11070 * it back after the decrement.
11072 char *rByte = aopGet(AOP(IC_RESULT(ic)), 0, FALSE, FALSE, TRUE);
11074 if (strcmp(rByte, "a"))
11076 /* Something is hopelessly wrong */
11077 fprintf(stderr, "*** warning: internal error at %s:%d\n",
11078 __FILE__, __LINE__);
11079 /* We can just give up; the generated code will be inefficient,
11080 * but what the hey.
11082 freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
11085 emitcode ("dec", "%s", rByte);
11086 aopPut(AOP(IC_RESULT(ic)), rByte, 0);
11087 emitcode ("jnz", "!tlabel", lbl->key + 100);
11089 else if (IS_AOP_PREG (IC_RESULT (ic)))
11091 emitcode ("dec", "%s",
11092 aopGet (AOP (IC_RESULT (ic)), 0, FALSE, FALSE, FALSE));
11093 emitcode ("mov", "a,%s", aopGet (AOP (IC_RESULT (ic)), 0, FALSE, FALSE, FALSE));
11094 emitcode ("jnz", "!tlabel", lbl->key + 100);
11098 emitcode ("djnz", "%s,!tlabel", aopGet (AOP (IC_RESULT (ic)), 0, FALSE, TRUE, FALSE),
11101 emitcode ("sjmp", "!tlabel", lbl1->key + 100);
11102 emitcode ("", "!tlabeldef", lbl->key + 100);
11103 emitcode ("ljmp", "!tlabel", IC_TRUE (ifx)->key + 100);
11104 emitcode ("", "!tlabeldef", lbl1->key + 100);
11106 freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
11107 ifx->generated = 1;
11111 /*-----------------------------------------------------------------*/
11112 /* genReceive - generate code for a receive iCode */
11113 /*-----------------------------------------------------------------*/
11115 genReceive (iCode * ic)
11118 int size = getSize (operandType (IC_RESULT (ic)));
11122 D (emitcode (";", "genReceive ");
11125 if (ic->argreg == 1) { /* first parameter */
11126 if (isOperandInFarSpace (IC_RESULT (ic)) &&
11127 (OP_SYMBOL (IC_RESULT (ic))->isspilt ||
11128 IS_TRUE_SYMOP (IC_RESULT (ic))))
11130 offset = fReturnSizeDS390 - size;
11133 emitcode ("push", "%s", (strcmp (fReturn[fReturnSizeDS390 - offset - 1], "a") ?
11134 fReturn[fReturnSizeDS390 - offset - 1] : "acc"));
11137 aopOp (IC_RESULT (ic), ic, FALSE, FALSE);
11138 size = AOP_SIZE (IC_RESULT (ic));
11142 emitcode ("pop", "acc");
11143 aopPut (AOP (IC_RESULT (ic)), "a", offset++);
11148 aopOp (IC_RESULT (ic), ic, FALSE, FALSE);
11150 assignResultValue (IC_RESULT (ic));
11152 } else { /* second receive onwards */
11153 /* this gets a little tricky since unused recevies will be
11154 eliminated, we have saved the reg in the type field . and
11155 we use that to figure out which register to use */
11156 aopOp (IC_RESULT (ic), ic, FALSE, FALSE);
11157 rb1off = ic->argreg;
11159 aopPut (AOP (IC_RESULT (ic)), rb1regs[rb1off++ -5], offset++);
11163 freeAsmop (IC_RESULT (ic), NULL, ic, TRUE);
11166 /*-----------------------------------------------------------------*/
11167 /* genMemcpyX2X - gen code for memcpy xdata to xdata */
11168 /*-----------------------------------------------------------------*/
11169 static void genMemcpyX2X( iCode *ic, int nparms, operand **parms, int fromc)
11171 operand *from , *to , *count;
11176 /* we know it has to be 3 parameters */
11177 assert (nparms == 3);
11179 rsave = newBitVect(16);
11180 /* save DPTR if it needs to be saved */
11181 for (i = DPL_IDX ; i <= B_IDX ; i++ ) {
11182 if (bitVectBitValue(ic->rMask,i))
11183 rsave = bitVectSetBit(rsave,i);
11185 rsave = bitVectIntersect(rsave,bitVectCplAnd (bitVectCopy (ic->rMask),
11186 ds390_rUmaskForOp (IC_RESULT(ic))));
11193 aopOp (from, ic->next, FALSE, FALSE);
11195 /* get from into DPTR1 */
11196 emitcode ("mov", "dpl1,%s", aopGet (AOP (from), 0, FALSE, FALSE, TRUE));
11197 emitcode ("mov", "dph1,%s", aopGet (AOP (from), 1, FALSE, FALSE, TRUE));
11198 if (options.model == MODEL_FLAT24) {
11199 emitcode ("mov", "dpx1,%s", aopGet (AOP (from), 2, FALSE, FALSE, TRUE));
11202 freeAsmop (from, NULL, ic, FALSE);
11203 aopOp (to, ic, FALSE, FALSE);
11204 /* get "to" into DPTR */
11205 /* if the operand is already in dptr
11206 then we do nothing else we move the value to dptr */
11207 if (AOP_TYPE (to) != AOP_STR) {
11208 /* if already in DPTR then we need to push */
11209 if (AOP_TYPE(to) == AOP_DPTR) {
11210 emitcode ("push", "%s", aopGet (AOP (to), 0, FALSE, TRUE, TRUE));
11211 emitcode ("push", "%s", aopGet (AOP (to), 1, FALSE, TRUE, TRUE));
11212 if (options.model == MODEL_FLAT24)
11213 emitcode ("mov", "dpx,%s", aopGet (AOP (to), 2, FALSE, FALSE, TRUE));
11214 emitcode ("pop", "dph");
11215 emitcode ("pop", "dpl");
11217 _startLazyDPSEvaluation ();
11218 /* if this is remateriazable */
11219 if (AOP_TYPE (to) == AOP_IMMD) {
11220 emitcode ("mov", "dptr,%s", aopGet (AOP (to), 0, TRUE, FALSE, FALSE));
11221 } else { /* we need to get it byte by byte */
11222 emitcode ("mov", "dpl,%s", aopGet (AOP (to), 0, FALSE, FALSE, TRUE));
11223 emitcode ("mov", "dph,%s", aopGet (AOP (to), 1, FALSE, FALSE, TRUE));
11224 if (options.model == MODEL_FLAT24) {
11225 emitcode ("mov", "dpx,%s", aopGet (AOP (to), 2, FALSE, FALSE, TRUE));
11228 _endLazyDPSEvaluation ();
11231 freeAsmop (to, NULL, ic, FALSE);
11232 _G.dptrInUse = _G.dptr1InUse = 1;
11233 aopOp (count, ic->next->next, FALSE,FALSE);
11234 lbl =newiTempLabel(NULL);
11236 /* now for the actual copy */
11237 if (AOP_TYPE(count) == AOP_LIT &&
11238 (int)floatFromVal (AOP(count)->aopu.aop_lit) <= 256) {
11239 emitcode ("mov", "b,%s",aopGet(AOP(count),0,FALSE,FALSE,FALSE));
11241 emitcode ("lcall","__bi_memcpyc2x_s");
11243 emitcode ("lcall","__bi_memcpyx2x_s");
11245 freeAsmop (count, NULL, ic, FALSE);
11247 symbol *lbl1 = newiTempLabel(NULL);
11249 emitcode (";"," Auto increment but no djnz");
11250 emitcode ("mov","_ap,%s",aopGet (AOP (count), 0, FALSE, TRUE, TRUE));
11251 emitcode ("mov","b,%s",aopGet (AOP (count), 1, FALSE, TRUE, TRUE));
11252 freeAsmop (count, NULL, ic, FALSE);
11253 emitcode ("mov", "dps,#!constbyte",0x21); /* Select DPTR2 & auto-toggle. */
11254 emitcode ("","!tlabeldef",lbl->key+100);
11256 emitcode ("clr","a");
11257 emitcode ("movc", "a,@a+dptr");
11259 emitcode ("movx", "a,@dptr");
11260 emitcode ("movx", "@dptr,a");
11261 emitcode ("inc", "dptr");
11262 emitcode ("inc", "dptr");
11263 emitcode ("mov","a,b");
11264 emitcode ("orl","a,_ap");
11265 emitcode ("jz","!tlabel",lbl1->key+100);
11266 emitcode ("mov","a,_ap");
11267 emitcode ("add","a,#!constbyte",0xFF);
11268 emitcode ("mov","_ap,a");
11269 emitcode ("mov","a,b");
11270 emitcode ("addc","a,#!constbyte",0xFF);
11271 emitcode ("mov","b,a");
11272 emitcode ("sjmp","!tlabel",lbl->key+100);
11273 emitcode ("","!tlabeldef",lbl1->key+100);
11275 emitcode ("mov", "dps,#0");
11276 _G.dptrInUse = _G.dptr1InUse = 0;
11277 unsavermask(rsave);
11281 /*-----------------------------------------------------------------*/
11282 /* genMemcmpX2X - gen code for memcmp xdata to xdata */
11283 /*-----------------------------------------------------------------*/
11284 static void genMemcmpX2X( iCode *ic, int nparms, operand **parms, int fromc)
11286 operand *from , *to , *count;
11291 /* we know it has to be 3 parameters */
11292 assert (nparms == 3);
11294 rsave = newBitVect(16);
11295 /* save DPTR if it needs to be saved */
11296 for (i = DPL_IDX ; i <= B_IDX ; i++ ) {
11297 if (bitVectBitValue(ic->rMask,i))
11298 rsave = bitVectSetBit(rsave,i);
11300 rsave = bitVectIntersect(rsave,bitVectCplAnd (bitVectCopy (ic->rMask),
11301 ds390_rUmaskForOp (IC_RESULT(ic))));
11308 aopOp (from, ic->next, FALSE, FALSE);
11310 /* get from into DPTR1 */
11311 emitcode ("mov", "dpl1,%s", aopGet (AOP (from), 0, FALSE, FALSE, TRUE));
11312 emitcode ("mov", "dph1,%s", aopGet (AOP (from), 1, FALSE, FALSE, TRUE));
11313 if (options.model == MODEL_FLAT24) {
11314 emitcode ("mov", "dpx1,%s", aopGet (AOP (from), 2, FALSE, FALSE, TRUE));
11317 freeAsmop (from, NULL, ic, FALSE);
11318 aopOp (to, ic, FALSE, FALSE);
11319 /* get "to" into DPTR */
11320 /* if the operand is already in dptr
11321 then we do nothing else we move the value to dptr */
11322 if (AOP_TYPE (to) != AOP_STR) {
11323 /* if already in DPTR then we need to push */
11324 if (AOP_TYPE(to) == AOP_DPTR) {
11325 emitcode ("push", "%s", aopGet (AOP (to), 0, FALSE, TRUE, TRUE));
11326 emitcode ("push", "%s", aopGet (AOP (to), 1, FALSE, TRUE, TRUE));
11327 if (options.model == MODEL_FLAT24)
11328 emitcode ("mov", "dpx,%s", aopGet (AOP (to), 2, FALSE, FALSE, TRUE));
11329 emitcode ("pop", "dph");
11330 emitcode ("pop", "dpl");
11332 _startLazyDPSEvaluation ();
11333 /* if this is remateriazable */
11334 if (AOP_TYPE (to) == AOP_IMMD) {
11335 emitcode ("mov", "dptr,%s", aopGet (AOP (to), 0, TRUE, FALSE, FALSE));
11336 } else { /* we need to get it byte by byte */
11337 emitcode ("mov", "dpl,%s", aopGet (AOP (to), 0, FALSE, FALSE, TRUE));
11338 emitcode ("mov", "dph,%s", aopGet (AOP (to), 1, FALSE, FALSE, TRUE));
11339 if (options.model == MODEL_FLAT24) {
11340 emitcode ("mov", "dpx,%s", aopGet (AOP (to), 2, FALSE, FALSE, TRUE));
11343 _endLazyDPSEvaluation ();
11346 freeAsmop (to, NULL, ic, FALSE);
11347 _G.dptrInUse = _G.dptr1InUse = 1;
11348 aopOp (count, ic->next->next, FALSE,FALSE);
11349 lbl =newiTempLabel(NULL);
11350 lbl2 =newiTempLabel(NULL);
11352 /* now for the actual compare */
11353 if (AOP_TYPE(count) == AOP_LIT &&
11354 (int)floatFromVal (AOP(count)->aopu.aop_lit) <= 256) {
11355 emitcode ("mov", "b,%s",aopGet(AOP(count),0,FALSE,FALSE,FALSE));
11357 emitcode("lcall","__bi_memcmpc2x_s");
11359 emitcode("lcall","__bi_memcmpx2x_s");
11360 freeAsmop (count, NULL, ic, FALSE);
11361 aopOp (IC_RESULT(ic), ic, FALSE,FALSE);
11362 aopPut(AOP(IC_RESULT(ic)),"a",0);
11363 freeAsmop (IC_RESULT(ic), NULL, ic, FALSE);
11365 symbol *lbl1 = newiTempLabel(NULL);
11367 emitcode("push","ar0");
11368 emitcode (";"," Auto increment but no djnz");
11369 emitcode ("mov","_ap,%s",aopGet (AOP (count), 0, FALSE, TRUE, TRUE));
11370 emitcode ("mov","b,%s",aopGet (AOP (count), 1, FALSE, TRUE, TRUE));
11371 freeAsmop (count, NULL, ic, FALSE);
11372 emitcode ("mov", "dps,#!constbyte",0x21); /* Select DPTR2 & auto-toggle. */
11373 emitcode ("","!tlabeldef",lbl->key+100);
11375 emitcode ("clr","a");
11376 emitcode ("movc", "a,@a+dptr");
11378 emitcode ("movx", "a,@dptr");
11379 emitcode ("mov","r0,a");
11380 emitcode ("movx", "a,@dptr");
11381 emitcode ("clr","c");
11382 emitcode ("subb","a,r0");
11383 emitcode ("jnz","!tlabel",lbl2->key+100);
11384 emitcode ("inc", "dptr");
11385 emitcode ("inc", "dptr");
11386 emitcode ("mov","a,b");
11387 emitcode ("orl","a,_ap");
11388 emitcode ("jz","!tlabel",lbl1->key+100);
11389 emitcode ("mov","a,_ap");
11390 emitcode ("add","a,#!constbyte",0xFF);
11391 emitcode ("mov","_ap,a");
11392 emitcode ("mov","a,b");
11393 emitcode ("addc","a,#!constbyte",0xFF);
11394 emitcode ("mov","b,a");
11395 emitcode ("sjmp","!tlabel",lbl->key+100);
11396 emitcode ("","!tlabeldef",lbl1->key+100);
11397 emitcode ("clr","a");
11398 emitcode ("","!tlabeldef",lbl2->key+100);
11399 aopOp (IC_RESULT(ic), ic, FALSE,FALSE);
11400 aopPut(AOP(IC_RESULT(ic)),"a",0);
11401 freeAsmop (IC_RESULT(ic), NULL, ic, FALSE);
11402 emitcode("pop","ar0");
11403 emitcode ("mov", "dps,#0");
11405 _G.dptrInUse = _G.dptr1InUse = 0;
11406 unsavermask(rsave);
11410 /*-----------------------------------------------------------------*/
11411 /* genInp - gen code for __builtin_inp read data from a mem mapped */
11412 /* port, first parameter output area second parameter pointer to */
11413 /* port third parameter count */
11414 /*-----------------------------------------------------------------*/
11415 static void genInp( iCode *ic, int nparms, operand **parms)
11417 operand *from , *to , *count;
11422 /* we know it has to be 3 parameters */
11423 assert (nparms == 3);
11425 rsave = newBitVect(16);
11426 /* save DPTR if it needs to be saved */
11427 for (i = DPL_IDX ; i <= B_IDX ; i++ ) {
11428 if (bitVectBitValue(ic->rMask,i))
11429 rsave = bitVectSetBit(rsave,i);
11431 rsave = bitVectIntersect(rsave,bitVectCplAnd (bitVectCopy (ic->rMask),
11432 ds390_rUmaskForOp (IC_RESULT(ic))));
11439 aopOp (from, ic->next, FALSE, FALSE);
11441 /* get from into DPTR1 */
11442 emitcode ("mov", "dpl1,%s", aopGet (AOP (from), 0, FALSE, FALSE, TRUE));
11443 emitcode ("mov", "dph1,%s", aopGet (AOP (from), 1, FALSE, FALSE, TRUE));
11444 if (options.model == MODEL_FLAT24) {
11445 emitcode ("mov", "dpx1,%s", aopGet (AOP (from), 2, FALSE, FALSE, TRUE));
11448 freeAsmop (from, NULL, ic, FALSE);
11449 aopOp (to, ic, FALSE, FALSE);
11450 /* get "to" into DPTR */
11451 /* if the operand is already in dptr
11452 then we do nothing else we move the value to dptr */
11453 if (AOP_TYPE (to) != AOP_STR) {
11454 /* if already in DPTR then we need to push */
11455 if (AOP_TYPE(to) == AOP_DPTR) {
11456 emitcode ("push", "%s", aopGet (AOP (to), 0, FALSE, TRUE, TRUE));
11457 emitcode ("push", "%s", aopGet (AOP (to), 1, FALSE, TRUE, TRUE));
11458 if (options.model == MODEL_FLAT24)
11459 emitcode ("mov", "dpx,%s", aopGet (AOP (to), 2, FALSE, FALSE, TRUE));
11460 emitcode ("pop", "dph");
11461 emitcode ("pop", "dpl");
11463 _startLazyDPSEvaluation ();
11464 /* if this is remateriazable */
11465 if (AOP_TYPE (to) == AOP_IMMD) {
11466 emitcode ("mov", "dptr,%s", aopGet (AOP (to), 0, TRUE, FALSE, FALSE));
11467 } else { /* we need to get it byte by byte */
11468 emitcode ("mov", "dpl,%s", aopGet (AOP (to), 0, FALSE, FALSE, TRUE));
11469 emitcode ("mov", "dph,%s", aopGet (AOP (to), 1, FALSE, FALSE, TRUE));
11470 if (options.model == MODEL_FLAT24) {
11471 emitcode ("mov", "dpx,%s", aopGet (AOP (to), 2, FALSE, FALSE, TRUE));
11474 _endLazyDPSEvaluation ();
11477 freeAsmop (to, NULL, ic, FALSE);
11479 _G.dptrInUse = _G.dptr1InUse = 1;
11480 aopOp (count, ic->next->next, FALSE,FALSE);
11481 lbl =newiTempLabel(NULL);
11483 /* now for the actual copy */
11484 if (AOP_TYPE(count) == AOP_LIT &&
11485 (int)floatFromVal (AOP(count)->aopu.aop_lit) <= 256) {
11486 emitcode (";","OH JOY auto increment with djnz (very fast)");
11487 emitcode ("mov", "dps,#!constbyte",0x1); /* Select DPTR2 */
11488 emitcode ("mov", "b,%s",aopGet(AOP(count),0,FALSE,FALSE,FALSE));
11489 freeAsmop (count, NULL, ic, FALSE);
11490 emitcode ("","!tlabeldef",lbl->key+100);
11491 emitcode ("movx", "a,@dptr"); /* read data from port */
11492 emitcode ("dec","dps"); /* switch to DPTR */
11493 emitcode ("movx", "@dptr,a"); /* save into location */
11494 emitcode ("inc", "dptr"); /* point to next area */
11495 emitcode ("inc","dps"); /* switch to DPTR2 */
11496 emitcode ("djnz","b,!tlabel",lbl->key+100);
11498 symbol *lbl1 = newiTempLabel(NULL);
11500 emitcode (";"," Auto increment but no djnz");
11501 emitcode ("mov","_ap,%s",aopGet (AOP (count), 0, FALSE, TRUE, TRUE));
11502 emitcode ("mov","b,%s",aopGet (AOP (count), 1, FALSE, TRUE, TRUE));
11503 freeAsmop (count, NULL, ic, FALSE);
11504 emitcode ("mov", "dps,#!constbyte",0x1); /* Select DPTR2 */
11505 emitcode ("","!tlabeldef",lbl->key+100);
11506 emitcode ("movx", "a,@dptr");
11507 emitcode ("dec","dps"); /* switch to DPTR */
11508 emitcode ("movx", "@dptr,a");
11509 emitcode ("inc", "dptr");
11510 emitcode ("inc","dps"); /* switch to DPTR2 */
11511 /* emitcode ("djnz","b,!tlabel",lbl->key+100); */
11512 /* emitcode ("djnz","_ap,!tlabel",lbl->key+100); */
11513 emitcode ("mov","a,b");
11514 emitcode ("orl","a,_ap");
11515 emitcode ("jz","!tlabel",lbl1->key+100);
11516 emitcode ("mov","a,_ap");
11517 emitcode ("add","a,#!constbyte",0xFF);
11518 emitcode ("mov","_ap,a");
11519 emitcode ("mov","a,b");
11520 emitcode ("addc","a,#!constbyte",0xFF);
11521 emitcode ("mov","b,a");
11522 emitcode ("sjmp","!tlabel",lbl->key+100);
11523 emitcode ("","!tlabeldef",lbl1->key+100);
11525 emitcode ("mov", "dps,#0");
11526 _G.dptrInUse = _G.dptr1InUse = 0;
11527 unsavermask(rsave);
11531 /*-----------------------------------------------------------------*/
11532 /* genOutp - gen code for __builtin_inp write data to a mem mapped */
11533 /* port, first parameter output area second parameter pointer to */
11534 /* port third parameter count */
11535 /*-----------------------------------------------------------------*/
11536 static void genOutp( iCode *ic, int nparms, operand **parms)
11538 operand *from , *to , *count;
11543 /* we know it has to be 3 parameters */
11544 assert (nparms == 3);
11546 rsave = newBitVect(16);
11547 /* save DPTR if it needs to be saved */
11548 for (i = DPL_IDX ; i <= B_IDX ; i++ ) {
11549 if (bitVectBitValue(ic->rMask,i))
11550 rsave = bitVectSetBit(rsave,i);
11552 rsave = bitVectIntersect(rsave,bitVectCplAnd (bitVectCopy (ic->rMask),
11553 ds390_rUmaskForOp (IC_RESULT(ic))));
11560 aopOp (from, ic->next, FALSE, FALSE);
11562 /* get from into DPTR1 */
11563 emitcode ("mov", "dpl1,%s", aopGet (AOP (from), 0, FALSE, FALSE, TRUE));
11564 emitcode ("mov", "dph1,%s", aopGet (AOP (from), 1, FALSE, FALSE, TRUE));
11565 if (options.model == MODEL_FLAT24) {
11566 emitcode ("mov", "dpx1,%s", aopGet (AOP (from), 2, FALSE, FALSE, TRUE));
11569 freeAsmop (from, NULL, ic, FALSE);
11570 aopOp (to, ic, FALSE, FALSE);
11571 /* get "to" into DPTR */
11572 /* if the operand is already in dptr
11573 then we do nothing else we move the value to dptr */
11574 if (AOP_TYPE (to) != AOP_STR) {
11575 /* if already in DPTR then we need to push */
11576 if (AOP_TYPE(to) == AOP_DPTR) {
11577 emitcode ("push", "%s", aopGet (AOP (to), 0, FALSE, TRUE, TRUE));
11578 emitcode ("push", "%s", aopGet (AOP (to), 1, FALSE, TRUE, TRUE));
11579 if (options.model == MODEL_FLAT24)
11580 emitcode ("mov", "dpx,%s", aopGet (AOP (to), 2, FALSE, FALSE, TRUE));
11581 emitcode ("pop", "dph");
11582 emitcode ("pop", "dpl");
11584 _startLazyDPSEvaluation ();
11585 /* if this is remateriazable */
11586 if (AOP_TYPE (to) == AOP_IMMD) {
11587 emitcode ("mov", "dptr,%s", aopGet (AOP (to), 0, TRUE, FALSE, FALSE));
11588 } else { /* we need to get it byte by byte */
11589 emitcode ("mov", "dpl,%s", aopGet (AOP (to), 0, FALSE, FALSE, TRUE));
11590 emitcode ("mov", "dph,%s", aopGet (AOP (to), 1, FALSE, FALSE, TRUE));
11591 if (options.model == MODEL_FLAT24) {
11592 emitcode ("mov", "dpx,%s", aopGet (AOP (to), 2, FALSE, FALSE, TRUE));
11595 _endLazyDPSEvaluation ();
11598 freeAsmop (to, NULL, ic, FALSE);
11600 _G.dptrInUse = _G.dptr1InUse = 1;
11601 aopOp (count, ic->next->next, FALSE,FALSE);
11602 lbl =newiTempLabel(NULL);
11604 /* now for the actual copy */
11605 if (AOP_TYPE(count) == AOP_LIT &&
11606 (int)floatFromVal (AOP(count)->aopu.aop_lit) <= 256) {
11607 emitcode (";","OH JOY auto increment with djnz (very fast)");
11608 emitcode ("mov", "dps,#!constbyte",0x0); /* Select DPTR */
11609 emitcode ("mov", "b,%s",aopGet(AOP(count),0,FALSE,FALSE,FALSE));
11610 emitcode ("","!tlabeldef",lbl->key+100);
11611 emitcode ("movx", "a,@dptr"); /* read data from port */
11612 emitcode ("inc","dps"); /* switch to DPTR2 */
11613 emitcode ("movx", "@dptr,a"); /* save into location */
11614 emitcode ("inc", "dptr"); /* point to next area */
11615 emitcode ("dec","dps"); /* switch to DPTR */
11616 emitcode ("djnz","b,!tlabel",lbl->key+100);
11617 freeAsmop (count, NULL, ic, FALSE);
11619 symbol *lbl1 = newiTempLabel(NULL);
11621 emitcode (";"," Auto increment but no djnz");
11622 emitcode ("mov","_ap,%s",aopGet (AOP (count), 0, FALSE, TRUE, TRUE));
11623 emitcode ("mov","b,%s",aopGet (AOP (count), 1, FALSE, TRUE, TRUE));
11624 freeAsmop (count, NULL, ic, FALSE);
11625 emitcode ("mov", "dps,#!constbyte",0x0); /* Select DPTR */
11626 emitcode ("","!tlabeldef",lbl->key+100);
11627 emitcode ("movx", "a,@dptr");
11628 emitcode ("inc", "dptr");
11629 emitcode ("inc","dps"); /* switch to DPTR2 */
11630 emitcode ("movx", "@dptr,a");
11631 emitcode ("dec","dps"); /* switch to DPTR */
11632 emitcode ("mov","a,b");
11633 emitcode ("orl","a,_ap");
11634 emitcode ("jz","!tlabel",lbl1->key+100);
11635 emitcode ("mov","a,_ap");
11636 emitcode ("add","a,#!constbyte",0xFF);
11637 emitcode ("mov","_ap,a");
11638 emitcode ("mov","a,b");
11639 emitcode ("addc","a,#!constbyte",0xFF);
11640 emitcode ("mov","b,a");
11641 emitcode ("sjmp","!tlabel",lbl->key+100);
11642 emitcode ("","!tlabeldef",lbl1->key+100);
11644 emitcode ("mov", "dps,#0");
11645 _G.dptrInUse = _G.dptr1InUse = 0;
11646 unsavermask(rsave);
11650 /*-----------------------------------------------------------------*/
11651 /* genSwapW - swap lower & high order bytes */
11652 /*-----------------------------------------------------------------*/
11653 static void genSwapW(iCode *ic, int nparms, operand **parms)
11657 assert (nparms==1);
11660 dest=IC_RESULT(ic);
11662 assert(getSize(operandType(src))==2);
11664 aopOp (src, ic, FALSE, FALSE);
11665 emitcode ("mov","a,%s",aopGet(AOP(src),0,FALSE,FALSE,TRUE));
11667 emitcode ("mov","b,%s",aopGet(AOP(src),1,FALSE,FALSE,FALSE));
11669 freeAsmop (src, NULL, ic, FALSE);
11671 aopOp (dest,ic, FALSE, FALSE);
11672 aopPut(AOP(dest),"b",0);
11673 aopPut(AOP(dest),"a",1);
11674 freeAsmop (dest, NULL, ic, FALSE);
11677 /*-----------------------------------------------------------------*/
11678 /* genMemsetX - gencode for memSetX data */
11679 /*-----------------------------------------------------------------*/
11680 static void genMemsetX(iCode *ic, int nparms, operand **parms)
11682 operand *to , *val , *count;
11686 bitVect *rsave = NULL;
11688 /* we know it has to be 3 parameters */
11689 assert (nparms == 3);
11695 /* save DPTR if it needs to be saved */
11696 rsave = newBitVect(16);
11697 for (i = DPL_IDX ; i <= B_IDX ; i++ ) {
11698 if (bitVectBitValue(ic->rMask,i))
11699 rsave = bitVectSetBit(rsave,i);
11701 rsave = bitVectIntersect(rsave,bitVectCplAnd (bitVectCopy (ic->rMask),
11702 ds390_rUmaskForOp (IC_RESULT(ic))));
11705 aopOp (to, ic, FALSE, FALSE);
11706 /* get "to" into DPTR */
11707 /* if the operand is already in dptr
11708 then we do nothing else we move the value to dptr */
11709 if (AOP_TYPE (to) != AOP_STR) {
11710 /* if already in DPTR then we need to push */
11711 if (AOP_TYPE(to) == AOP_DPTR) {
11712 emitcode ("push", "%s", aopGet (AOP (to), 0, FALSE, TRUE, TRUE));
11713 emitcode ("push", "%s", aopGet (AOP (to), 1, FALSE, TRUE, TRUE));
11714 if (options.model == MODEL_FLAT24)
11715 emitcode ("mov", "dpx,%s", aopGet (AOP (to), 2, FALSE, FALSE, TRUE));
11716 emitcode ("pop", "dph");
11717 emitcode ("pop", "dpl");
11719 _startLazyDPSEvaluation ();
11720 /* if this is remateriazable */
11721 if (AOP_TYPE (to) == AOP_IMMD) {
11722 emitcode ("mov", "dptr,%s", aopGet (AOP (to), 0, TRUE, FALSE, FALSE));
11723 } else { /* we need to get it byte by byte */
11724 emitcode ("mov", "dpl,%s", aopGet (AOP (to), 0, FALSE, FALSE, TRUE));
11725 emitcode ("mov", "dph,%s", aopGet (AOP (to), 1, FALSE, FALSE, TRUE));
11726 if (options.model == MODEL_FLAT24) {
11727 emitcode ("mov", "dpx,%s", aopGet (AOP (to), 2, FALSE, FALSE, TRUE));
11730 _endLazyDPSEvaluation ();
11733 freeAsmop (to, NULL, ic, FALSE);
11735 aopOp (val, ic->next->next, FALSE,FALSE);
11736 aopOp (count, ic->next->next, FALSE,FALSE);
11737 lbl =newiTempLabel(NULL);
11738 /* now for the actual copy */
11739 if (AOP_TYPE(count) == AOP_LIT &&
11740 (int)floatFromVal (AOP(count)->aopu.aop_lit) <= 256) {
11741 l = aopGet(AOP (val), 0, FALSE, FALSE, TRUE);
11742 emitcode ("mov", "b,%s",aopGet(AOP(count),0,FALSE,FALSE,FALSE));
11744 emitcode ("","!tlabeldef",lbl->key+100);
11745 emitcode ("movx", "@dptr,a");
11746 emitcode ("inc", "dptr");
11747 emitcode ("djnz","b,!tlabel",lbl->key+100);
11749 symbol *lbl1 = newiTempLabel(NULL);
11751 emitcode ("mov","_ap,%s",aopGet (AOP (count), 0, FALSE, TRUE, TRUE));
11752 emitcode ("mov","b,%s",aopGet (AOP (count), 1, FALSE, TRUE, TRUE));
11753 emitcode ("","!tlabeldef",lbl->key+100);
11754 l = aopGet(AOP (val), 0, FALSE, FALSE, TRUE);
11756 emitcode ("movx", "@dptr,a");
11757 emitcode ("inc", "dptr");
11758 emitcode ("mov","a,b");
11759 emitcode ("orl","a,_ap");
11760 emitcode ("jz","!tlabel",lbl1->key+100);
11761 emitcode ("mov","a,_ap");
11762 emitcode ("add","a,#!constbyte",0xFF);
11763 emitcode ("mov","_ap,a");
11764 emitcode ("mov","a,b");
11765 emitcode ("addc","a,#!constbyte",0xFF);
11766 emitcode ("mov","b,a");
11767 emitcode ("sjmp","!tlabel",lbl->key+100);
11768 emitcode ("","!tlabeldef",lbl1->key+100);
11770 freeAsmop (count, NULL, ic, FALSE);
11771 unsavermask(rsave);
11774 /*-----------------------------------------------------------------*/
11775 /* genNatLibLoadPrimitive - calls TINI api function to load primitive */
11776 /*-----------------------------------------------------------------*/
11777 static void genNatLibLoadPrimitive(iCode *ic, int nparms, operand **parms,int size)
11780 operand *pnum, *result;
11783 assert (nparms==1);
11784 /* save registers that need to be saved */
11785 savermask(rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
11786 ds390_rUmaskForOp (IC_RESULT(ic))));
11789 aopOp (pnum, ic, FALSE, FALSE);
11790 emitcode ("mov","a,%s",aopGet(AOP(pnum),0,FALSE,FALSE,FALSE));
11791 freeAsmop (pnum, NULL, ic, FALSE);
11792 emitcode ("lcall","NatLib_LoadPrimitive");
11793 aopOp (result=IC_RESULT(ic), ic, FALSE, FALSE);
11794 if (aopHasRegs(AOP(result),R0_IDX,R1_IDX) ||
11795 aopHasRegs(AOP(result),R2_IDX,R3_IDX) ) {
11796 for (i = (size-1) ; i >= 0 ; i-- ) {
11797 emitcode ("push","a%s",javaRet[i]);
11799 for (i=0; i < size ; i++ ) {
11800 emitcode ("pop","a%s",aopGet(AOP(result),i,FALSE,FALSE,FALSE));
11803 for (i = 0 ; i < size ; i++ ) {
11804 aopPut(AOP(result),javaRet[i],i);
11807 freeAsmop (result, NULL, ic, FALSE);
11808 unsavermask(rsave);
11811 /*-----------------------------------------------------------------*/
11812 /* genNatLibLoadPointer - calls TINI api function to load pointer */
11813 /*-----------------------------------------------------------------*/
11814 static void genNatLibLoadPointer(iCode *ic, int nparms, operand **parms)
11817 operand *pnum, *result;
11821 assert (nparms==1);
11822 /* save registers that need to be saved */
11823 savermask(rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
11824 ds390_rUmaskForOp (IC_RESULT(ic))));
11827 aopOp (pnum, ic, FALSE, FALSE);
11828 emitcode ("mov","a,%s",aopGet(AOP(pnum),0,FALSE,FALSE,FALSE));
11829 freeAsmop (pnum, NULL, ic, FALSE);
11830 emitcode ("lcall","NatLib_LoadPointer");
11831 aopOp (result=IC_RESULT(ic), ic, FALSE, FALSE);
11832 if (AOP_TYPE(result)!=AOP_STR) {
11833 for (i = 0 ; i < size ; i++ ) {
11834 aopPut(AOP(result),fReturn[i],i);
11837 freeAsmop (result, NULL, ic, FALSE);
11838 unsavermask(rsave);
11841 /*-----------------------------------------------------------------*/
11842 /* genNatLibInstallStateBlock - */
11843 /*-----------------------------------------------------------------*/
11844 static void genNatLibInstallStateBlock(iCode *ic, int nparms,
11845 operand **parms, const char *name)
11848 operand *psb, *handle;
11849 assert (nparms==2);
11851 /* save registers that need to be saved */
11852 savermask(rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
11853 ds390_rUmaskForOp (IC_RESULT(ic))));
11857 /* put pointer to state block into DPTR1 */
11858 aopOp (psb, ic, FALSE, FALSE);
11859 if (AOP_TYPE (psb) == AOP_IMMD) {
11860 emitcode ("mov","dps,#1");
11861 emitcode ("mov", "dptr,%s", aopGet (AOP (psb), 0, TRUE, FALSE, FALSE));
11862 emitcode ("mov","dps,#0");
11864 emitcode ("mov","dpl1,%s",aopGet(AOP(psb),0,FALSE,FALSE,FALSE));
11865 emitcode ("mov","dph1,%s",aopGet(AOP(psb),1,FALSE,FALSE,FALSE));
11866 emitcode ("mov","dpx1,%s",aopGet(AOP(psb),2,FALSE,FALSE,FALSE));
11868 freeAsmop (psb, NULL, ic, FALSE);
11870 /* put libraryID into DPTR */
11871 emitcode ("mov","dptr,#LibraryID");
11873 /* put handle into r3:r2 */
11874 aopOp (handle, ic, FALSE, FALSE);
11875 if (aopHasRegs(AOP(handle),R2_IDX,R3_IDX)) {
11876 emitcode ("push","%s",aopGet(AOP(handle),0,FALSE,TRUE,FALSE));
11877 emitcode ("push","%s",aopGet(AOP(handle),1,FALSE,TRUE,FALSE));
11878 emitcode ("pop","ar3");
11879 emitcode ("pop","ar2");
11881 emitcode ("mov","r2,%s",aopGet(AOP(handle),0,FALSE,TRUE,FALSE));
11882 emitcode ("mov","r3,%s",aopGet(AOP(handle),1,FALSE,TRUE,FALSE));
11884 freeAsmop (psb, NULL, ic, FALSE);
11886 /* make the call */
11887 emitcode ("lcall","NatLib_Install%sStateBlock",name);
11889 /* put return value into place*/
11891 aopOp (IC_RESULT(ic), ic, FALSE, FALSE);
11893 aopPut(AOP(IC_RESULT(ic)),"a",0);
11894 freeAsmop (IC_RESULT(ic), NULL, ic, FALSE);
11895 unsavermask(rsave);
11898 /*-----------------------------------------------------------------*/
11899 /* genNatLibRemoveStateBlock - */
11900 /*-----------------------------------------------------------------*/
11901 static void genNatLibRemoveStateBlock(iCode *ic,int nparms,const char *name)
11907 /* save registers that need to be saved */
11908 savermask(rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
11909 ds390_rUmaskForOp (IC_RESULT(ic))));
11911 /* put libraryID into DPTR */
11912 emitcode ("mov","dptr,#LibraryID");
11913 /* make the call */
11914 emitcode ("lcall","NatLib_Remove%sStateBlock",name);
11915 unsavermask(rsave);
11918 /*-----------------------------------------------------------------*/
11919 /* genNatLibGetStateBlock - */
11920 /*-----------------------------------------------------------------*/
11921 static void genNatLibGetStateBlock(iCode *ic,int nparms,
11922 operand **parms,const char *name)
11925 symbol *lbl = newiTempLabel(NULL);
11928 /* save registers that need to be saved */
11929 savermask(rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
11930 ds390_rUmaskForOp (IC_RESULT(ic))));
11932 /* put libraryID into DPTR */
11933 emitcode ("mov","dptr,#LibraryID");
11934 /* make the call */
11935 emitcode ("lcall","NatLib_Remove%sStateBlock",name);
11936 emitcode ("jnz","!tlabel",lbl->key+100);
11938 /* put return value into place */
11939 aopOp(IC_RESULT(ic),ic,FALSE,FALSE);
11940 if (aopHasRegs(AOP(IC_RESULT(ic)),R2_IDX,R3_IDX)) {
11941 emitcode ("push","ar3");
11942 emitcode ("push","ar2");
11943 emitcode ("pop","%s",aopGet(AOP(IC_RESULT(ic)),0,FALSE,TRUE,FALSE));
11944 emitcode ("pop","%s",aopGet(AOP(IC_RESULT(ic)),1,FALSE,TRUE,FALSE));
11946 aopPut(AOP(IC_RESULT(ic)),"r2",0);
11947 aopPut(AOP(IC_RESULT(ic)),"r3",1);
11949 freeAsmop (IC_RESULT(ic), NULL, ic, FALSE);
11950 emitcode ("","!tlabeldef",lbl->key+100);
11951 unsavermask(rsave);
11954 /*-----------------------------------------------------------------*/
11955 /* genMMMalloc - */
11956 /*-----------------------------------------------------------------*/
11957 static void genMMMalloc (iCode *ic,int nparms, operand **parms,
11958 int size, const char *name)
11963 symbol *lbl = newiTempLabel(NULL);
11965 assert (nparms == 1);
11966 /* save registers that need to be saved */
11967 savermask(rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
11968 ds390_rUmaskForOp (IC_RESULT(ic))));
11971 aopOp (bsize,ic,FALSE,FALSE);
11973 /* put the size in R4-R2 */
11974 if (aopHasRegs(AOP(bsize),R2_IDX, (size==3 ? R4_IDX: R3_IDX))) {
11975 emitcode("push","%s",aopGet(AOP(bsize),0,FALSE,TRUE,FALSE));
11976 emitcode("push","%s",aopGet(AOP(bsize),1,FALSE,TRUE,FALSE));
11978 emitcode("push","%s",aopGet(AOP(bsize),2,FALSE,TRUE,FALSE));
11979 emitcode("pop","ar4");
11981 emitcode("pop","ar3");
11982 emitcode("pop","ar2");
11984 emitcode ("mov","r2,%s",aopGet(AOP(bsize),0,FALSE,TRUE,FALSE));
11985 emitcode ("mov","r3,%s",aopGet(AOP(bsize),1,FALSE,TRUE,FALSE));
11987 emitcode("mov","r4,%s",aopGet(AOP(bsize),2,FALSE,TRUE,FALSE));
11990 freeAsmop (bsize, NULL, ic, FALSE);
11992 /* make the call */
11993 emitcode ("lcall","MM_%s",name);
11994 emitcode ("jz","!tlabel",lbl->key+100);
11995 emitcode ("mov","r2,#!constbyte",0xff);
11996 emitcode ("mov","r3,#!constbyte",0xff);
11997 emitcode ("","!tlabeldef",lbl->key+100);
11998 /* we don't care about the pointer : we just save the handle */
11999 rsym = OP_SYMBOL(IC_RESULT(ic));
12000 if (rsym->liveFrom != rsym->liveTo) {
12001 aopOp(IC_RESULT(ic),ic,FALSE,FALSE);
12002 if (aopHasRegs(AOP(IC_RESULT(ic)),R2_IDX,R3_IDX)) {
12003 emitcode ("push","ar3");
12004 emitcode ("push","ar2");
12005 emitcode ("pop","%s",aopGet(AOP(IC_RESULT(ic)),0,FALSE,TRUE,FALSE));
12006 emitcode ("pop","%s",aopGet(AOP(IC_RESULT(ic)),1,FALSE,TRUE,FALSE));
12008 aopPut(AOP(IC_RESULT(ic)),"r2",0);
12009 aopPut(AOP(IC_RESULT(ic)),"r3",1);
12011 freeAsmop (IC_RESULT(ic), NULL, ic, FALSE);
12013 unsavermask(rsave);
12016 /*-----------------------------------------------------------------*/
12018 /*-----------------------------------------------------------------*/
12019 static void genMMDeref (iCode *ic,int nparms, operand **parms)
12024 assert (nparms == 1);
12025 /* save registers that need to be saved */
12026 savermask(rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
12027 ds390_rUmaskForOp (IC_RESULT(ic))));
12030 aopOp (handle,ic,FALSE,FALSE);
12032 /* put the size in R4-R2 */
12033 if (aopHasRegs(AOP(handle),R2_IDX,R3_IDX)) {
12034 emitcode("push","%s",aopGet(AOP(handle),0,FALSE,TRUE,FALSE));
12035 emitcode("push","%s",aopGet(AOP(handle),1,FALSE,TRUE,FALSE));
12036 emitcode("pop","ar3");
12037 emitcode("pop","ar2");
12039 emitcode ("mov","r2,%s",aopGet(AOP(handle),0,FALSE,TRUE,FALSE));
12040 emitcode ("mov","r3,%s",aopGet(AOP(handle),1,FALSE,TRUE,FALSE));
12042 freeAsmop (handle, NULL, ic, FALSE);
12044 /* make the call */
12045 emitcode ("lcall","MM_Deref");
12048 symbol *rsym = OP_SYMBOL(IC_RESULT(ic));
12049 if (rsym->liveFrom != rsym->liveTo) {
12050 aopOp (IC_RESULT(ic),ic,FALSE,FALSE);
12051 if (AOP_TYPE(IC_RESULT(ic)) != AOP_STR) {
12052 aopPut(AOP(IC_RESULT(ic)),"dpl",0);
12053 aopPut(AOP(IC_RESULT(ic)),"dph",1);
12054 aopPut(AOP(IC_RESULT(ic)),"dpx",2);
12058 freeAsmop (IC_RESULT(ic), NULL, ic, FALSE);
12059 unsavermask(rsave);
12062 /*-----------------------------------------------------------------*/
12063 /* genMMUnrestrictedPersist - */
12064 /*-----------------------------------------------------------------*/
12065 static void genMMUnrestrictedPersist(iCode *ic,int nparms, operand **parms)
12070 assert (nparms == 1);
12071 /* save registers that need to be saved */
12072 savermask(rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
12073 ds390_rUmaskForOp (IC_RESULT(ic))));
12076 aopOp (handle,ic,FALSE,FALSE);
12078 /* put the size in R3-R2 */
12079 if (aopHasRegs(AOP(handle),R2_IDX,R3_IDX)) {
12080 emitcode("push","%s",aopGet(AOP(handle),0,FALSE,TRUE,FALSE));
12081 emitcode("push","%s",aopGet(AOP(handle),1,FALSE,TRUE,FALSE));
12082 emitcode("pop","ar3");
12083 emitcode("pop","ar2");
12085 emitcode ("mov","r2,%s",aopGet(AOP(handle),0,FALSE,TRUE,FALSE));
12086 emitcode ("mov","r3,%s",aopGet(AOP(handle),1,FALSE,TRUE,FALSE));
12088 freeAsmop (handle, NULL, ic, FALSE);
12090 /* make the call */
12091 emitcode ("lcall","MM_UnrestrictedPersist");
12094 symbol *rsym = OP_SYMBOL(IC_RESULT(ic));
12095 if (rsym->liveFrom != rsym->liveTo) {
12096 aopOp (IC_RESULT(ic),ic,FALSE,FALSE);
12097 aopPut(AOP(IC_RESULT(ic)),"a",0);
12098 freeAsmop (IC_RESULT(ic), NULL, ic, FALSE);
12101 unsavermask(rsave);
12104 /*-----------------------------------------------------------------*/
12105 /* genSystemExecJavaProcess - */
12106 /*-----------------------------------------------------------------*/
12107 static void genSystemExecJavaProcess(iCode *ic,int nparms, operand **parms)
12110 operand *handle, *pp;
12112 assert (nparms==2);
12113 /* save registers that need to be saved */
12114 savermask(rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
12115 ds390_rUmaskForOp (IC_RESULT(ic))));
12120 /* put the handle in R3-R2 */
12121 aopOp (handle,ic,FALSE,FALSE);
12122 if (aopHasRegs(AOP(handle),R2_IDX,R3_IDX)) {
12123 emitcode("push","%s",aopGet(AOP(handle),0,FALSE,TRUE,FALSE));
12124 emitcode("push","%s",aopGet(AOP(handle),1,FALSE,TRUE,FALSE));
12125 emitcode("pop","ar3");
12126 emitcode("pop","ar2");
12128 emitcode ("mov","r2,%s",aopGet(AOP(handle),0,FALSE,TRUE,FALSE));
12129 emitcode ("mov","r3,%s",aopGet(AOP(handle),1,FALSE,TRUE,FALSE));
12131 freeAsmop (handle, NULL, ic, FALSE);
12133 /* put pointer in DPTR */
12134 aopOp (pp,ic,FALSE,FALSE);
12135 if (AOP_TYPE(pp) == AOP_IMMD) {
12136 emitcode ("mov", "dptr,%s", aopGet (AOP (pp), 0, TRUE, FALSE, FALSE));
12137 } else if (AOP_TYPE(pp) != AOP_STR) { /* not already in dptr */
12138 emitcode ("mov","dpl,%s",aopGet(AOP(pp),0,FALSE,FALSE,FALSE));
12139 emitcode ("mov","dph,%s",aopGet(AOP(pp),1,FALSE,FALSE,FALSE));
12140 emitcode ("mov","dpx,%s",aopGet(AOP(pp),2,FALSE,FALSE,FALSE));
12142 freeAsmop (handle, NULL, ic, FALSE);
12144 /* make the call */
12145 emitcode ("lcall","System_ExecJavaProcess");
12147 /* put result in place */
12149 symbol *rsym = OP_SYMBOL(IC_RESULT(ic));
12150 if (rsym->liveFrom != rsym->liveTo) {
12151 aopOp (IC_RESULT(ic),ic,FALSE,FALSE);
12152 aopPut(AOP(IC_RESULT(ic)),"a",0);
12153 freeAsmop (IC_RESULT(ic), NULL, ic, FALSE);
12157 unsavermask(rsave);
12160 /*-----------------------------------------------------------------*/
12161 /* genSystemRTCRegisters - */
12162 /*-----------------------------------------------------------------*/
12163 static void genSystemRTCRegisters(iCode *ic,int nparms, operand **parms,
12169 assert (nparms==1);
12170 /* save registers that need to be saved */
12171 savermask(rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
12172 ds390_rUmaskForOp (IC_RESULT(ic))));
12175 /* put pointer in DPTR */
12176 aopOp (pp,ic,FALSE,FALSE);
12177 if (AOP_TYPE (pp) == AOP_IMMD) {
12178 emitcode ("mov","dps,#1");
12179 emitcode ("mov", "dptr,%s", aopGet (AOP (pp), 0, TRUE, FALSE, FALSE));
12180 emitcode ("mov","dps,#0");
12182 emitcode ("mov","dpl1,%s",aopGet(AOP(pp),0,FALSE,FALSE,FALSE));
12183 emitcode ("mov","dph1,%s",aopGet(AOP(pp),1,FALSE,FALSE,FALSE));
12184 emitcode ("mov","dpx1,%s",aopGet(AOP(pp),2,FALSE,FALSE,FALSE));
12186 freeAsmop (pp, NULL, ic, FALSE);
12188 /* make the call */
12189 emitcode ("lcall","System_%sRTCRegisters",name);
12191 unsavermask(rsave);
12194 /*-----------------------------------------------------------------*/
12195 /* genSystemThreadSleep - */
12196 /*-----------------------------------------------------------------*/
12197 static void genSystemThreadSleep(iCode *ic,int nparms, operand **parms, char *name)
12202 assert (nparms==1);
12203 /* save registers that need to be saved */
12204 savermask(rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
12205 ds390_rUmaskForOp (IC_RESULT(ic))));
12208 aopOp(to,ic,FALSE,FALSE);
12209 if (aopHasRegs(AOP(to),R2_IDX,R3_IDX) ||
12210 aopHasRegs(AOP(to),R0_IDX,R1_IDX) ) {
12211 emitcode ("push","%s",aopGet(AOP(to),0,FALSE,TRUE,FALSE));
12212 emitcode ("push","%s",aopGet(AOP(to),1,FALSE,TRUE,FALSE));
12213 emitcode ("push","%s",aopGet(AOP(to),2,FALSE,TRUE,FALSE));
12214 emitcode ("push","%s",aopGet(AOP(to),3,FALSE,TRUE,FALSE));
12215 emitcode ("pop","ar3");
12216 emitcode ("pop","ar2");
12217 emitcode ("pop","ar1");
12218 emitcode ("pop","ar0");
12220 emitcode ("mov","r0,%s",aopGet(AOP(to),0,FALSE,TRUE,FALSE));
12221 emitcode ("mov","r1,%s",aopGet(AOP(to),1,FALSE,TRUE,FALSE));
12222 emitcode ("mov","r2,%s",aopGet(AOP(to),2,FALSE,TRUE,FALSE));
12223 emitcode ("mov","r3,%s",aopGet(AOP(to),3,FALSE,TRUE,FALSE));
12225 freeAsmop (to, NULL, ic, FALSE);
12227 /* suspend in acc */
12229 aopOp(s,ic,FALSE,FALSE);
12230 emitcode ("mov","a,%s",aopGet(AOP(s),0,FALSE,TRUE,FALSE));
12231 freeAsmop (s, NULL, ic, FALSE);
12233 /* make the call */
12234 emitcode ("lcall","System_%s",name);
12236 unsavermask(rsave);
12239 /*-----------------------------------------------------------------*/
12240 /* genSystemThreadResume - */
12241 /*-----------------------------------------------------------------*/
12242 static void genSystemThreadResume(iCode *ic,int nparms, operand **parms)
12247 assert (nparms==2);
12248 /* save registers that need to be saved */
12249 savermask(rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
12250 ds390_rUmaskForOp (IC_RESULT(ic))));
12256 aopOp(pid,ic,FALSE,FALSE);
12257 emitcode ("mov","r0,%s",aopGet(AOP(pid),0,FALSE,TRUE,FALSE));
12258 freeAsmop (pid, NULL, ic, FALSE);
12261 aopOp(tid,ic,FALSE,FALSE);
12262 emitcode ("mov","a,%s",aopGet(AOP(tid),0,FALSE,TRUE,FALSE));
12263 freeAsmop (tid, NULL, ic, FALSE);
12265 emitcode ("lcall","System_ThreadResume");
12267 /* put result into place */
12269 symbol *rsym = OP_SYMBOL(IC_RESULT(ic));
12270 if (rsym->liveFrom != rsym->liveTo) {
12271 aopOp (IC_RESULT(ic),ic,FALSE,FALSE);
12272 aopPut(AOP(IC_RESULT(ic)),"a",0);
12273 freeAsmop (IC_RESULT(ic), NULL, ic, FALSE);
12276 unsavermask(rsave);
12279 /*-----------------------------------------------------------------*/
12280 /* genSystemProcessResume - */
12281 /*-----------------------------------------------------------------*/
12282 static void genSystemProcessResume(iCode *ic,int nparms, operand **parms)
12287 assert (nparms==1);
12288 /* save registers that need to be saved */
12289 savermask(rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
12290 ds390_rUmaskForOp (IC_RESULT(ic))));
12295 aopOp(pid,ic,FALSE,FALSE);
12296 emitcode ("mov","a,%s",aopGet(AOP(pid),0,FALSE,TRUE,FALSE));
12297 freeAsmop (pid, NULL, ic, FALSE);
12299 emitcode ("lcall","System_ProcessResume");
12301 unsavermask(rsave);
12304 /*-----------------------------------------------------------------*/
12306 /*-----------------------------------------------------------------*/
12307 static void genSystem (iCode *ic,int nparms,char *name)
12309 assert(nparms == 0);
12311 emitcode ("lcall","System_%s",name);
12314 /*-----------------------------------------------------------------*/
12315 /* genSystemPoll - */
12316 /*-----------------------------------------------------------------*/
12317 static void genSystemPoll(iCode *ic,int nparms, operand **parms,char *name)
12322 assert (nparms==1);
12323 /* save registers that need to be saved */
12324 savermask(rsave = bitVectCplAnd (bitVectCopy (ic->rMask),
12325 ds390_rUmaskForOp (IC_RESULT(ic))));
12328 aopOp (fp,ic,FALSE,FALSE);
12329 if (AOP_TYPE (fp) == AOP_IMMD) {
12330 emitcode ("mov", "dptr,%s", aopGet (AOP (fp), 0, TRUE, FALSE, FALSE));
12331 } else if (AOP_TYPE(fp) != AOP_STR) { /* not already in dptr */
12332 emitcode ("mov","dpl,%s",aopGet(AOP(fp),0,FALSE,FALSE,FALSE));
12333 emitcode ("mov","dph,%s",aopGet(AOP(fp),1,FALSE,FALSE,FALSE));
12334 emitcode ("mov","dpx,%s",aopGet(AOP(fp),2,FALSE,FALSE,FALSE));
12336 freeAsmop (fp, NULL, ic, FALSE);
12338 emitcode ("lcall","System_%sPoll",name);
12340 /* put result into place */
12342 symbol *rsym = OP_SYMBOL(IC_RESULT(ic));
12343 if (rsym->liveFrom != rsym->liveTo) {
12344 aopOp (IC_RESULT(ic),ic,FALSE,FALSE);
12345 aopPut(AOP(IC_RESULT(ic)),"a",0);
12346 freeAsmop (IC_RESULT(ic), NULL, ic, FALSE);
12349 unsavermask(rsave);
12352 /*-----------------------------------------------------------------*/
12353 /* genSystemGetCurrentID - */
12354 /*-----------------------------------------------------------------*/
12355 static void genSystemGetCurrentID(iCode *ic,int nparms, operand **parms,char *name)
12357 assert (nparms==0);
12359 emitcode ("lcall","System_GetCurrent%sId",name);
12360 /* put result into place */
12362 symbol *rsym = OP_SYMBOL(IC_RESULT(ic));
12363 if (rsym->liveFrom != rsym->liveTo) {
12364 aopOp (IC_RESULT(ic),ic,FALSE,FALSE);
12365 aopPut(AOP(IC_RESULT(ic)),"a",0);
12366 freeAsmop (IC_RESULT(ic), NULL, ic, FALSE);
12371 /*-----------------------------------------------------------------*/
12372 /* genBuiltIn - calls the appropriate function to generating code */
12373 /* for a built in function */
12374 /*-----------------------------------------------------------------*/
12375 static void genBuiltIn (iCode *ic)
12377 operand *bi_parms[MAX_BUILTIN_ARGS];
12382 /* get all the arguments for a built in function */
12383 bi_iCode = getBuiltinParms(ic,&nbi_parms,bi_parms);
12385 /* which function is it */
12386 bif = OP_SYMBOL(IC_LEFT(bi_iCode));
12387 if (strcmp(bif->name,"__builtin_memcpy_x2x")==0) {
12388 genMemcpyX2X(bi_iCode,nbi_parms,bi_parms,0);
12389 } else if (strcmp(bif->name,"__builtin_memcpy_c2x")==0) {
12390 genMemcpyX2X(bi_iCode,nbi_parms,bi_parms,1);
12391 } else if (strcmp(bif->name,"__builtin_memcmp_x2x")==0) {
12392 genMemcmpX2X(bi_iCode,nbi_parms,bi_parms,0);
12393 } else if (strcmp(bif->name,"__builtin_memcmp_c2x")==0) {
12394 genMemcmpX2X(bi_iCode,nbi_parms,bi_parms,1);
12395 } else if (strcmp(bif->name,"__builtin_memset_x")==0) {
12396 genMemsetX(bi_iCode,nbi_parms,bi_parms);
12397 } else if (strcmp(bif->name,"__builtin_inp")==0) {
12398 genInp(bi_iCode,nbi_parms,bi_parms);
12399 } else if (strcmp(bif->name,"__builtin_outp")==0) {
12400 genOutp(bi_iCode,nbi_parms,bi_parms);
12401 } else if (strcmp(bif->name,"__builtin_swapw")==0) {
12402 genSwapW(bi_iCode,nbi_parms,bi_parms);
12403 /* JavaNative builtIns */
12404 } else if (strcmp(bif->name,"NatLib_LoadByte")==0) {
12405 genNatLibLoadPrimitive(bi_iCode,nbi_parms,bi_parms,1);
12406 } else if (strcmp(bif->name,"NatLib_LoadShort")==0) {
12407 genNatLibLoadPrimitive(bi_iCode,nbi_parms,bi_parms,2);
12408 } else if (strcmp(bif->name,"NatLib_LoadInt")==0) {
12409 genNatLibLoadPrimitive(bi_iCode,nbi_parms,bi_parms,4);
12410 } else if (strcmp(bif->name,"NatLib_LoadPointer")==0) {
12411 genNatLibLoadPointer(bi_iCode,nbi_parms,bi_parms);
12412 } else if (strcmp(bif->name,"NatLib_InstallImmutableStateBlock")==0) {
12413 genNatLibInstallStateBlock(bi_iCode,nbi_parms,bi_parms,"Immutable");
12414 } else if (strcmp(bif->name,"NatLib_InstallEphemeralStateBlock")==0) {
12415 genNatLibInstallStateBlock(bi_iCode,nbi_parms,bi_parms,"Ephemeral");
12416 } else if (strcmp(bif->name,"NatLib_RemoveImmutableStateBlock")==0) {
12417 genNatLibRemoveStateBlock(bi_iCode,nbi_parms,"Immutable");
12418 } else if (strcmp(bif->name,"NatLib_RemoveEphemeralStateBlock")==0) {
12419 genNatLibRemoveStateBlock(bi_iCode,nbi_parms,"Ephemeral");
12420 } else if (strcmp(bif->name,"NatLib_GetImmutableStateBlock")==0) {
12421 genNatLibGetStateBlock(bi_iCode,nbi_parms,bi_parms,"Immutable");
12422 } else if (strcmp(bif->name,"NatLib_GetEphemeralStateBlock")==0) {
12423 genNatLibGetStateBlock(bi_iCode,nbi_parms,bi_parms,"Ephemeral");
12424 } else if (strcmp(bif->name,"MM_XMalloc")==0) {
12425 genMMMalloc(bi_iCode,nbi_parms,bi_parms,3,"XMalloc");
12426 } else if (strcmp(bif->name,"MM_Malloc")==0) {
12427 genMMMalloc(bi_iCode,nbi_parms,bi_parms,2,"Malloc");
12428 } else if (strcmp(bif->name,"MM_ApplicationMalloc")==0) {
12429 genMMMalloc(bi_iCode,nbi_parms,bi_parms,2,"ApplicationMalloc");
12430 } else if (strcmp(bif->name,"MM_Free")==0) {
12431 genMMMalloc(bi_iCode,nbi_parms,bi_parms,2,"Free");
12432 } else if (strcmp(bif->name,"MM_Deref")==0) {
12433 genMMDeref(bi_iCode,nbi_parms,bi_parms);
12434 } else if (strcmp(bif->name,"MM_UnrestrictedPersist")==0) {
12435 genMMUnrestrictedPersist(bi_iCode,nbi_parms,bi_parms);
12436 } else if (strcmp(bif->name,"System_ExecJavaProcess")==0) {
12437 genSystemExecJavaProcess(bi_iCode,nbi_parms,bi_parms);
12438 } else if (strcmp(bif->name,"System_GetRTCRegisters")==0) {
12439 genSystemRTCRegisters(bi_iCode,nbi_parms,bi_parms,"Get");
12440 } else if (strcmp(bif->name,"System_SetRTCRegisters")==0) {
12441 genSystemRTCRegisters(bi_iCode,nbi_parms,bi_parms,"Set");
12442 } else if (strcmp(bif->name,"System_ThreadSleep")==0) {
12443 genSystemThreadSleep(bi_iCode,nbi_parms,bi_parms,"ThreadSleep");
12444 } else if (strcmp(bif->name,"System_ThreadSleep_ExitCriticalSection")==0) {
12445 genSystemThreadSleep(bi_iCode,nbi_parms,bi_parms,"ThreadSleep_ExitCriticalSection");
12446 } else if (strcmp(bif->name,"System_ProcessSleep")==0) {
12447 genSystemThreadSleep(bi_iCode,nbi_parms,bi_parms,"ProcessSleep");
12448 } else if (strcmp(bif->name,"System_ProcessSleep_ExitCriticalSection")==0) {
12449 genSystemThreadSleep(bi_iCode,nbi_parms,bi_parms,"ProcessSleep_ExitCriticalSection");
12450 } else if (strcmp(bif->name,"System_ThreadResume")==0) {
12451 genSystemThreadResume(bi_iCode,nbi_parms,bi_parms);
12452 } else if (strcmp(bif->name,"System_SaveThread")==0) {
12453 genSystemThreadResume(bi_iCode,nbi_parms,bi_parms);
12454 } else if (strcmp(bif->name,"System_ThreadResume")==0) {
12455 genSystemThreadResume(bi_iCode,nbi_parms,bi_parms);
12456 } else if (strcmp(bif->name,"System_ProcessResume")==0) {
12457 genSystemProcessResume(bi_iCode,nbi_parms,bi_parms);
12458 } else if (strcmp(bif->name,"System_SaveJavaThreadState")==0) {
12459 genSystem(bi_iCode,nbi_parms,"SaveJavaThreadState");
12460 } else if (strcmp(bif->name,"System_RestoreJavaThreadState")==0) {
12461 genSystem(bi_iCode,nbi_parms,"RestoreJavaThreadState");
12462 } else if (strcmp(bif->name,"System_ProcessYield")==0) {
12463 genSystem(bi_iCode,nbi_parms,"ProcessYield");
12464 } else if (strcmp(bif->name,"System_ProcessSuspend")==0) {
12465 genSystem(bi_iCode,nbi_parms,"ProcessSuspend");
12466 } else if (strcmp(bif->name,"System_RegisterPoll")==0) {
12467 genSystemPoll(bi_iCode,nbi_parms,bi_parms,"Register");
12468 } else if (strcmp(bif->name,"System_RemovePoll")==0) {
12469 genSystemPoll(bi_iCode,nbi_parms,bi_parms,"Remove");
12470 } else if (strcmp(bif->name,"System_GetCurrentThreadId")==0) {
12471 genSystemGetCurrentID(bi_iCode,nbi_parms,bi_parms,"Thread");
12472 } else if (strcmp(bif->name,"System_GetCurrentProcessId")==0) {
12473 genSystemGetCurrentID(bi_iCode,nbi_parms,bi_parms,"Process");
12475 werror(E_INTERNAL_ERROR,__FILE__,__LINE__,"unknown builtin function encountered\n");
12481 /*-----------------------------------------------------------------*/
12482 /* gen390Code - generate code for Dallas 390 based controllers */
12483 /*-----------------------------------------------------------------*/
12485 gen390Code (iCode * lic)
12490 lineHead = lineCurr = NULL;
12491 dptrn[1][0] = "dpl1";
12492 dptrn[1][1] = "dph1";
12493 dptrn[1][2] = "dpx1";
12495 if (options.model == MODEL_FLAT24) {
12496 fReturnSizeDS390 = 5;
12497 fReturn = fReturn24;
12499 fReturnSizeDS390 = 4;
12500 fReturn = fReturn16;
12501 options.stack10bit=0;
12504 /* print the allocation information */
12506 printAllocInfo (currFunc, codeOutFile);
12508 /* if debug information required */
12509 if (options.debug && currFunc)
12511 cdbSymbol (currFunc, cdbFile, FALSE, TRUE);
12513 if (IS_STATIC (currFunc->etype))
12514 emitcode ("", "F%s$%s$0$0 ==.", moduleName, currFunc->name);
12516 emitcode ("", "G$%s$0$0 ==.", currFunc->name);
12519 /* stack pointer name */
12520 if (options.useXstack)
12526 for (ic = lic; ic; ic = ic->next)
12529 if (ic->lineno && cln != ic->lineno)
12534 emitcode ("", "C$%s$%d$%d$%d ==.",
12535 FileBaseName (ic->filename), ic->lineno,
12536 ic->level, ic->block);
12539 emitcode ("", ";\t%s:%d: %s", ic->filename, ic->lineno,
12540 printCLine(ic->filename, ic->lineno));
12543 /* if the result is marked as
12544 spilt and rematerializable or code for
12545 this has already been generated then
12547 if (resultRemat (ic) || ic->generated)
12550 /* depending on the operation */
12570 /* IPOP happens only when trying to restore a
12571 spilt live range, if there is an ifx statement
12572 following this pop then the if statement might
12573 be using some of the registers being popped which
12574 would destory the contents of the register so
12575 we need to check for this condition and handle it */
12577 ic->next->op == IFX &&
12578 regsInCommon (IC_LEFT (ic), IC_COND (ic->next)))
12579 genIfx (ic->next, ic);
12597 genEndFunction (ic);
12617 if (!genDjnz (ic, ifxForOp (IC_RESULT (ic), ic)))
12634 genCmpGt (ic, ifxForOp (IC_RESULT (ic), ic));
12638 genCmpLt (ic, ifxForOp (IC_RESULT (ic), ic));
12645 /* note these two are xlated by algebraic equivalence
12646 during parsing SDCC.y */
12647 werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
12648 "got '>=' or '<=' shouldn't have come here");
12652 genCmpEq (ic, ifxForOp (IC_RESULT (ic), ic));
12664 genXor (ic, ifxForOp (IC_RESULT (ic), ic));
12668 genOr (ic, ifxForOp (IC_RESULT (ic), ic));
12672 genAnd (ic, ifxForOp (IC_RESULT (ic), ic));
12696 genRightShift (ic);
12699 case GET_VALUE_AT_ADDRESS:
12700 genPointerGet (ic,hasInc(IC_LEFT(ic),ic, getSize(operandType(IC_RESULT(ic)))));
12704 if (POINTER_SET (ic))
12705 genPointerSet (ic,hasInc(IC_RESULT(ic),ic,getSize(operandType(IC_RIGHT(ic)))));
12731 if (ic->builtinSEND) genBuiltIn(ic);
12732 else addSet (&_G.sendSet, ic);
12745 /* now we are ready to call the
12746 peep hole optimizer */
12747 if (!options.nopeep)
12748 peepHole (&lineHead);
12750 /* now do the actual printing */
12751 printLine (lineHead, codeOutFile);