1 /*-------------------------------------------------------------------------
3 pcode.c - post code generation
4 Written By - Scott Dattalo scott@dattalo.com
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 -------------------------------------------------------------------------*/
23 #include "common.h" // Include everything in the SDCC src directory
28 #include "pcodeflow.h"
32 pCode *findFunction(char *fname);
34 static void FixRegisterBanking(pBlock *pb,int cur_bank);
36 #if defined(__BORLANDC__) || defined(_MSC_VER)
37 #define STRCASECMP stricmp
39 #define STRCASECMP strcasecmp
42 /****************************************************************/
43 /****************************************************************/
45 peepCommand peepCommands[] = {
47 {NOTBITSKIP, "_NOTBITSKIP_"},
48 {BITSKIP, "_BITSKIP_"},
49 {INVERTBITSKIP, "_INVERTBITSKIP_"},
56 // Eventually this will go into device dependent files:
57 pCodeOpReg pc_status = {{PO_STATUS, "STATUS"}, -1, NULL,0,NULL};
58 pCodeOpReg pc_indf = {{PO_INDF, "INDF"}, -1, NULL,0,NULL};
59 pCodeOpReg pc_fsr = {{PO_FSR, "FSR"}, -1, NULL,0,NULL};
60 pCodeOpReg pc_intcon = {{PO_INTCON, "INTCON"}, -1, NULL,0,NULL};
61 pCodeOpReg pc_pcl = {{PO_PCL, "PCL"}, -1, NULL,0,NULL};
62 pCodeOpReg pc_pclath = {{PO_PCLATH, "PCLATH"}, -1, NULL,0,NULL};
64 pCodeOpReg pc_wsave = {{PO_GPR_REGISTER, "WSAVE"}, -1, NULL,0,NULL};
65 pCodeOpReg pc_ssave = {{PO_GPR_REGISTER, "SSAVE"}, -1, NULL,0,NULL};
66 pCodeOpReg pc_psave = {{PO_GPR_REGISTER, "PSAVE"}, -1, NULL,0,NULL};
68 static int mnemonics_initialized = 0;
70 static hTab *pic14MnemonicsHash = NULL;
71 static hTab *pic14pCodePeepCommandsHash = NULL;
74 static pFile *the_pFile = NULL;
75 static pBlock *pb_dead_pcodes = NULL;
77 /* Hardcoded flags to change the behavior of the PIC port */
78 static int peepOptimizing = 1; /* run the peephole optimizer if nonzero */
79 static int functionInlining = 1; /* inline functions if nonzero */
80 int debug_verbose = 0; /* Set true to inundate .asm file */
82 // static int GpCodeSequenceNumber = 1;
85 unsigned maxIdx; /* This keeps track of the maximum register index for call tree register reuse */
86 unsigned peakIdx; /* This keeps track of the peak register index for call tree register reuse */
88 extern void RemoveUnusedRegisters(void);
89 extern void RegsUnMapLiveRanges(void);
90 extern void BuildFlowTree(pBlock *pb);
91 extern void pCodeRegOptimizeRegUsage(int level);
92 extern int picIsInitialized(void);
93 extern const char *pCodeOpType(pCodeOp *pcop);
95 /****************************************************************/
96 /* Forward declarations */
97 /****************************************************************/
99 void unlinkpCode(pCode *pc);
101 static void genericAnalyze(pCode *pc);
102 static void AnalyzeGOTO(pCode *pc);
103 static void AnalyzeSKIP(pCode *pc);
104 static void AnalyzeRETURN(pCode *pc);
107 static void genericDestruct(pCode *pc);
108 static void genericPrint(FILE *of,pCode *pc);
110 static void pCodePrintLabel(FILE *of, pCode *pc);
111 static void pCodePrintFunction(FILE *of, pCode *pc);
112 static void pCodeOpPrint(FILE *of, pCodeOp *pcop);
113 static char *get_op_from_instruction( pCodeInstruction *pcc);
114 char *get_op( pCodeOp *pcop,char *buff,size_t buf_size);
115 int pCodePeepMatchLine(pCodePeep *peepBlock, pCode *pcs, pCode *pcd);
116 int pCodePeepMatchRule(pCode *pc);
117 void pBlockStats(FILE *of, pBlock *pb);
118 pBlock *newpBlock(void);
119 pCodeOp *popCopyGPR2Bit(pCodeOp *pc, int bitval);
120 void pCodeRegMapLiveRanges(pBlock *pb);
123 /****************************************************************/
124 /* PIC Instructions */
125 /****************************************************************/
127 pCodeInstruction pciADDWF = {
128 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
141 1,0, // dest, bit instruction
143 0, // literal operand
145 (PCC_W | PCC_REGISTER), // inCond
146 (PCC_REGISTER | PCC_Z) // outCond
149 pCodeInstruction pciADDFW = {
150 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
163 0,0, // dest, bit instruction
165 0, // literal operand
167 (PCC_W | PCC_REGISTER), // inCond
168 (PCC_W | PCC_Z) // outCond
171 pCodeInstruction pciADDLW = {
172 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
185 0,0, // dest, bit instruction
187 1, // literal operand
189 (PCC_W | PCC_LITERAL), // inCond
190 (PCC_W | PCC_Z | PCC_C | PCC_DC) // outCond
193 pCodeInstruction pciANDLW = {
194 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
207 0,0, // dest, bit instruction
209 1, // literal operand
211 (PCC_W | PCC_LITERAL), // inCond
212 (PCC_W | PCC_Z) // outCond
215 pCodeInstruction pciANDWF = {
216 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
229 1,0, // dest, bit instruction
231 0, // literal operand
233 (PCC_W | PCC_REGISTER), // inCond
234 (PCC_REGISTER | PCC_Z) // outCond
237 pCodeInstruction pciANDFW = {
238 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
251 0,0, // dest, bit instruction
253 0, // literal operand
255 (PCC_W | PCC_REGISTER), // inCond
256 (PCC_W | PCC_Z) // outCond
259 pCodeInstruction pciBCF = {
260 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
273 1,1, // dest, bit instruction
275 0, // literal operand
277 (PCC_REGISTER | PCC_EXAMINE_PCOP), // inCond
278 PCC_REGISTER // outCond
281 pCodeInstruction pciBSF = {
282 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
295 1,1, // dest, bit instruction
297 0, // literal operand
299 (PCC_REGISTER | PCC_EXAMINE_PCOP), // inCond
300 (PCC_REGISTER | PCC_EXAMINE_PCOP) // outCond
303 pCodeInstruction pciBTFSC = {
304 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
317 0,1, // dest, bit instruction
319 0, // literal operand
321 (PCC_REGISTER | PCC_EXAMINE_PCOP), // inCond
322 PCC_EXAMINE_PCOP // outCond
325 pCodeInstruction pciBTFSS = {
326 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
339 0,1, // dest, bit instruction
341 0, // literal operand
343 (PCC_REGISTER | PCC_EXAMINE_PCOP), // inCond
344 PCC_EXAMINE_PCOP // outCond
347 pCodeInstruction pciCALL = {
348 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
361 0,0, // dest, bit instruction
363 0, // literal operand
369 pCodeInstruction pciCOMF = {
370 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
383 1,0, // dest, bit instruction
385 0, // literal operand
387 PCC_REGISTER, // inCond
388 PCC_REGISTER // outCond
391 pCodeInstruction pciCOMFW = {
392 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
405 0,0, // dest, bit instruction
407 0, // literal operand
409 PCC_REGISTER, // inCond
413 pCodeInstruction pciCLRF = {
414 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
427 0,0, // dest, bit instruction
429 0, // literal operand
432 PCC_REGISTER // outCond
435 pCodeInstruction pciCLRW = {
436 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
449 0,0, // dest, bit instruction
451 0, // literal operand
457 pCodeInstruction pciCLRWDT = {
458 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
471 0,0, // dest, bit instruction
473 0, // literal operand
479 pCodeInstruction pciDECF = {
480 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
493 1,0, // dest, bit instruction
495 0, // literal operand
497 PCC_REGISTER, // inCond
498 PCC_REGISTER // outCond
501 pCodeInstruction pciDECFW = {
502 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
515 0,0, // dest, bit instruction
517 0, // literal operand
519 PCC_REGISTER, // inCond
523 pCodeInstruction pciDECFSZ = {
524 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
537 1,0, // dest, bit instruction
539 0, // literal operand
541 PCC_REGISTER, // inCond
542 PCC_REGISTER // outCond
545 pCodeInstruction pciDECFSZW = {
546 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
559 0,0, // dest, bit instruction
561 0, // literal operand
563 PCC_REGISTER, // inCond
567 pCodeInstruction pciGOTO = {
568 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
581 0,0, // dest, bit instruction
583 0, // literal operand
589 pCodeInstruction pciINCF = {
590 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
603 1,0, // dest, bit instruction
605 0, // literal operand
607 PCC_REGISTER, // inCond
608 PCC_REGISTER // outCond
611 pCodeInstruction pciINCFW = {
612 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
625 0,0, // dest, bit instruction
627 0, // literal operand
629 PCC_REGISTER, // inCond
633 pCodeInstruction pciINCFSZ = {
634 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
647 1,0, // dest, bit instruction
649 0, // literal operand
651 PCC_REGISTER, // inCond
652 PCC_REGISTER // outCond
655 pCodeInstruction pciINCFSZW = {
656 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
669 0,0, // dest, bit instruction
671 0, // literal operand
673 PCC_REGISTER, // inCond
677 pCodeInstruction pciIORWF = {
678 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
691 1,0, // dest, bit instruction
693 0, // literal operand
695 (PCC_W | PCC_REGISTER), // inCond
696 (PCC_REGISTER | PCC_Z) // outCond
699 pCodeInstruction pciIORFW = {
700 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
713 0,0, // dest, bit instruction
715 0, // literal operand
717 (PCC_W | PCC_REGISTER), // inCond
718 (PCC_W | PCC_Z) // outCond
721 pCodeInstruction pciIORLW = {
722 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
735 0,0, // dest, bit instruction
737 1, // literal operand
739 (PCC_W | PCC_LITERAL), // inCond
740 (PCC_W | PCC_Z) // outCond
743 pCodeInstruction pciMOVF = {
744 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
757 1,0, // dest, bit instruction
759 0, // literal operand
761 PCC_REGISTER, // inCond
765 pCodeInstruction pciMOVFW = {
766 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
779 0,0, // dest, bit instruction
781 0, // literal operand
783 PCC_REGISTER, // inCond
784 (PCC_W | PCC_Z) // outCond
787 pCodeInstruction pciMOVWF = {
788 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
801 0,0, // dest, bit instruction
803 0, // literal operand
806 PCC_REGISTER // outCond
809 pCodeInstruction pciMOVLW = {
810 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
822 0,0, // dest, bit instruction
824 1, // literal operand
826 (PCC_NONE | PCC_LITERAL), // inCond
830 pCodeInstruction pciNOP = {
831 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
843 0,0, // dest, bit instruction
845 0, // literal operand
851 pCodeInstruction pciRETFIE = {
852 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
865 0,0, // dest, bit instruction
867 0, // literal operand
870 PCC_NONE // outCond (not true... affects the GIE bit too)
873 pCodeInstruction pciRETLW = {
874 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
887 0,0, // dest, bit instruction
889 1, // literal operand
891 PCC_LITERAL, // inCond
895 pCodeInstruction pciRETURN = {
896 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
909 0,0, // dest, bit instruction
911 0, // literal operand
917 pCodeInstruction pciRLF = {
918 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
931 1,0, // dest, bit instruction
933 0, // literal operand
935 (PCC_C | PCC_REGISTER), // inCond
936 (PCC_REGISTER | PCC_Z | PCC_C | PCC_DC) // outCond
939 pCodeInstruction pciRLFW = {
940 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
953 0,0, // dest, bit instruction
955 0, // literal operand
957 (PCC_C | PCC_REGISTER), // inCond
958 (PCC_W | PCC_Z | PCC_C | PCC_DC) // outCond
961 pCodeInstruction pciRRF = {
962 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
975 1,0, // dest, bit instruction
977 0, // literal operand
979 (PCC_C | PCC_REGISTER), // inCond
980 (PCC_REGISTER | PCC_Z | PCC_C | PCC_DC) // outCond
983 pCodeInstruction pciRRFW = {
984 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
997 0,0, // dest, bit instruction
999 0, // literal operand
1001 (PCC_C | PCC_REGISTER), // inCond
1002 (PCC_W | PCC_Z | PCC_C | PCC_DC) // outCond
1005 pCodeInstruction pciSUBWF = {
1006 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
1012 NULL, // from branch
1019 1,0, // dest, bit instruction
1020 0,0, // branch, skip
1021 0, // literal operand
1023 (PCC_W | PCC_REGISTER), // inCond
1024 (PCC_REGISTER | PCC_Z) // outCond
1027 pCodeInstruction pciSUBFW = {
1028 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
1034 NULL, // from branch
1041 0,0, // dest, bit instruction
1042 0,0, // branch, skip
1043 0, // literal operand
1045 (PCC_W | PCC_REGISTER), // inCond
1046 (PCC_W | PCC_Z) // outCond
1049 pCodeInstruction pciSUBLW = {
1050 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
1056 NULL, // from branch
1063 0,0, // dest, bit instruction
1064 0,0, // branch, skip
1065 1, // literal operand
1067 (PCC_W | PCC_LITERAL), // inCond
1068 (PCC_W | PCC_Z | PCC_C | PCC_DC) // outCond
1071 pCodeInstruction pciSWAPF = {
1072 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
1078 NULL, // from branch
1085 1,0, // dest, bit instruction
1086 0,0, // branch, skip
1087 0, // literal operand
1089 (PCC_REGISTER), // inCond
1090 (PCC_REGISTER) // outCond
1093 pCodeInstruction pciSWAPFW = {
1094 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
1100 NULL, // from branch
1107 0,0, // dest, bit instruction
1108 0,0, // branch, skip
1109 0, // literal operand
1111 (PCC_REGISTER), // inCond
1115 pCodeInstruction pciTRIS = {
1116 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
1122 NULL, // from branch
1129 0,0, // dest, bit instruction
1130 0,0, // branch, skip
1131 0, // literal operand
1134 PCC_REGISTER // outCond
1137 pCodeInstruction pciXORWF = {
1138 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
1144 NULL, // from branch
1151 1,0, // dest, bit instruction
1152 0,0, // branch, skip
1153 0, // literal operand
1155 (PCC_W | PCC_REGISTER), // inCond
1156 (PCC_REGISTER | PCC_Z) // outCond
1159 pCodeInstruction pciXORFW = {
1160 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
1166 NULL, // from branch
1173 0,0, // dest, bit instruction
1174 0,0, // branch, skip
1175 0, // literal operand
1177 (PCC_W | PCC_REGISTER), // inCond
1178 (PCC_W | PCC_Z) // outCond
1181 pCodeInstruction pciXORLW = {
1182 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
1188 NULL, // from branch
1195 0,0, // dest, bit instruction
1196 0,0, // branch, skip
1197 1, // literal operand
1199 (PCC_W | PCC_LITERAL), // inCond
1200 (PCC_W | PCC_Z | PCC_C | PCC_DC) // outCond
1204 pCodeInstruction pciBANKSEL = {
1205 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
1211 NULL, // from branch
1218 0,0, // dest, bit instruction
1219 0,0, // branch, skip
1220 0, // literal operand
1223 PCC_REGISTER // outCond
1226 pCodeInstruction pciPAGESEL = {
1227 {PC_OPCODE, NULL, NULL, 0, 0, NULL,
1233 NULL, // from branch
1240 0,0, // dest, bit instruction
1241 0,0, // branch, skip
1242 0, // literal operand
1245 PCC_REGISTER // outCond
1248 pCodeInstruction *pic14Mnemonics[MAX_PIC14MNEMONICS];
1251 /*-----------------------------------------------------------------*/
1252 /* return a unique ID number to assist pCodes debuging */
1253 /*-----------------------------------------------------------------*/
1254 unsigned PCodeID(void) {
1255 static unsigned int pcodeId = 1; /* unique ID number to be assigned to all pCodes */
1257 static unsigned int stop;
1259 stop++; // Place break point here
1264 #ifdef HAVE_VSNPRINTF
1265 // Alas, vsnprintf is not ANSI standard, and does not exist
1266 // on Solaris (and probably other non-Gnu flavored Unixes).
1268 /*-----------------------------------------------------------------*/
1269 /* SAFE_snprintf - like snprintf except the string pointer is */
1270 /* after the string has been printed to. This is */
1271 /* useful for printing to string as though if it */
1272 /* were a stream. */
1273 /*-----------------------------------------------------------------*/
1274 void SAFE_snprintf(char **str, size_t *size, const char *format, ...)
1282 va_start(val, format);
1284 vsnprintf(*str, *size, format, val);
1289 if((size_t)len > *size) {
1290 fprintf(stderr,"WARNING, it looks like %s has overflowed\n",__FUNCTION__);
1291 fprintf(stderr,"len = %d is > str size %d\n",len,(int)*size);
1299 #else // HAVE_VSNPRINTF
1301 // This version is *not* safe, despite the name.
1303 void SAFE_snprintf(char **str, size_t *size, const char *format, ...)
1307 static char buffer[1024]; /* grossly conservative, but still not inherently safe */
1312 va_start(val, format);
1314 vsprintf(buffer, format, val);
1317 len = strlen(buffer);
1319 fprintf(stderr,"WARNING, it looks like %s has overflowed\n",__FUNCTION__);
1320 fprintf(stderr,"len = %d is > str size %d\n",len,*size);
1323 strcpy(*str, buffer);
1329 #endif // HAVE_VSNPRINTF
1332 extern void initStack(int base_address, int size);
1333 extern regs *allocProcessorRegister(int rIdx, char * name, short po_type, int alias);
1334 extern regs *allocInternalRegister(int rIdx, char * name, short po_type, int alias);
1335 extern void init_pic(char *);
1337 void pCodeInitRegisters(void)
1339 static int initialized=0;
1340 int shareBankAddress,stkSize;
1346 shareBankAddress = 0x7f; /* FIXME - some PIC ICs like 16C7X which do not have a shared bank need a different approach. */
1347 stkSize = 8; // Set pseudo stack size to 8
1348 initStack(shareBankAddress, stkSize); // Putting the pseudo stack in shared memory so all modules use the same register when passing fn parameters
1349 init_pic(port->processor);
1350 if ((unsigned)shareBankAddress > getMaxRam())
1351 shareBankAddress = (int)getMaxRam();
1353 pc_status.r = allocProcessorRegister(IDX_STATUS,"STATUS", PO_STATUS, 0x180);
1354 pc_pcl.r = allocProcessorRegister(IDX_PCL,"PCL", PO_PCL, 0x80);
1355 pc_pclath.r = allocProcessorRegister(IDX_PCLATH,"PCLATH", PO_PCLATH, 0x180);
1356 pc_fsr.r = allocProcessorRegister(IDX_FSR,"FSR", PO_FSR, 0x180);
1357 pc_indf.r = allocProcessorRegister(IDX_INDF,"INDF", PO_INDF, 0x180);
1358 pc_intcon.r = allocProcessorRegister(IDX_INTCON,"INTCON", PO_INTCON, 0x180);
1360 pc_status.rIdx = IDX_STATUS;
1361 pc_fsr.rIdx = IDX_FSR;
1362 pc_indf.rIdx = IDX_INDF;
1363 pc_intcon.rIdx = IDX_INTCON;
1364 pc_pcl.rIdx = IDX_PCL;
1365 pc_pclath.rIdx = IDX_PCLATH;
1367 pc_wsave.r = allocInternalRegister(IDX_WSAVE,"WSAVE", PO_GPR_REGISTER, 0x180); /* Interrupt storage for working register - must be same address in all banks ie section SHAREBANK. */
1368 pc_ssave.r = allocInternalRegister(IDX_SSAVE,"SSAVE", PO_GPR_REGISTER, 0); /* Interrupt storage for status register. */
1369 pc_psave.r = allocInternalRegister(IDX_PSAVE,"PSAVE", PO_GPR_REGISTER, 0); /* Interrupt storage for pclath register. */
1371 pc_wsave.rIdx = pc_wsave.r->rIdx;
1372 pc_ssave.rIdx = pc_ssave.r->rIdx;
1373 pc_psave.rIdx = pc_psave.r->rIdx;
1375 pc_wsave.r->isFixed = 1; /* Some PIC ICs do not have a sharebank - this register needs to be reserved across all banks. */
1376 pc_wsave.r->address = shareBankAddress-stkSize;
1377 pc_ssave.r->isFixed = 1; /* This register must be in the first bank. */
1378 pc_ssave.r->address = shareBankAddress-stkSize-1;
1379 pc_psave.r->isFixed = 1; /* This register must be in the first bank. */
1380 pc_psave.r->address = shareBankAddress-stkSize-2;
1382 /* probably should put this in a separate initialization routine */
1383 pb_dead_pcodes = newpBlock();
1387 /*-----------------------------------------------------------------*/
1388 /* mnem2key - convert a pic mnemonic into a hash key */
1389 /* (BTW - this spreads the mnemonics quite well) */
1391 /*-----------------------------------------------------------------*/
1393 int mnem2key(char const *mnem)
1402 key += toupper(*mnem++) +1;
1406 return (key & 0x1f);
1410 void pic14initMnemonics(void)
1415 pCodeInstruction *pci;
1417 if(mnemonics_initialized)
1420 //FIXME - probably should NULL out the array before making the assignments
1421 //since we check the array contents below this initialization.
1423 pic14Mnemonics[POC_ADDLW] = &pciADDLW;
1424 pic14Mnemonics[POC_ADDWF] = &pciADDWF;
1425 pic14Mnemonics[POC_ADDFW] = &pciADDFW;
1426 pic14Mnemonics[POC_ANDLW] = &pciANDLW;
1427 pic14Mnemonics[POC_ANDWF] = &pciANDWF;
1428 pic14Mnemonics[POC_ANDFW] = &pciANDFW;
1429 pic14Mnemonics[POC_BCF] = &pciBCF;
1430 pic14Mnemonics[POC_BSF] = &pciBSF;
1431 pic14Mnemonics[POC_BTFSC] = &pciBTFSC;
1432 pic14Mnemonics[POC_BTFSS] = &pciBTFSS;
1433 pic14Mnemonics[POC_CALL] = &pciCALL;
1434 pic14Mnemonics[POC_COMF] = &pciCOMF;
1435 pic14Mnemonics[POC_COMFW] = &pciCOMFW;
1436 pic14Mnemonics[POC_CLRF] = &pciCLRF;
1437 pic14Mnemonics[POC_CLRW] = &pciCLRW;
1438 pic14Mnemonics[POC_CLRWDT] = &pciCLRWDT;
1439 pic14Mnemonics[POC_DECF] = &pciDECF;
1440 pic14Mnemonics[POC_DECFW] = &pciDECFW;
1441 pic14Mnemonics[POC_DECFSZ] = &pciDECFSZ;
1442 pic14Mnemonics[POC_DECFSZW] = &pciDECFSZW;
1443 pic14Mnemonics[POC_GOTO] = &pciGOTO;
1444 pic14Mnemonics[POC_INCF] = &pciINCF;
1445 pic14Mnemonics[POC_INCFW] = &pciINCFW;
1446 pic14Mnemonics[POC_INCFSZ] = &pciINCFSZ;
1447 pic14Mnemonics[POC_INCFSZW] = &pciINCFSZW;
1448 pic14Mnemonics[POC_IORLW] = &pciIORLW;
1449 pic14Mnemonics[POC_IORWF] = &pciIORWF;
1450 pic14Mnemonics[POC_IORFW] = &pciIORFW;
1451 pic14Mnemonics[POC_MOVF] = &pciMOVF;
1452 pic14Mnemonics[POC_MOVFW] = &pciMOVFW;
1453 pic14Mnemonics[POC_MOVLW] = &pciMOVLW;
1454 pic14Mnemonics[POC_MOVWF] = &pciMOVWF;
1455 pic14Mnemonics[POC_NOP] = &pciNOP;
1456 pic14Mnemonics[POC_RETFIE] = &pciRETFIE;
1457 pic14Mnemonics[POC_RETLW] = &pciRETLW;
1458 pic14Mnemonics[POC_RETURN] = &pciRETURN;
1459 pic14Mnemonics[POC_RLF] = &pciRLF;
1460 pic14Mnemonics[POC_RLFW] = &pciRLFW;
1461 pic14Mnemonics[POC_RRF] = &pciRRF;
1462 pic14Mnemonics[POC_RRFW] = &pciRRFW;
1463 pic14Mnemonics[POC_SUBLW] = &pciSUBLW;
1464 pic14Mnemonics[POC_SUBWF] = &pciSUBWF;
1465 pic14Mnemonics[POC_SUBFW] = &pciSUBFW;
1466 pic14Mnemonics[POC_SWAPF] = &pciSWAPF;
1467 pic14Mnemonics[POC_SWAPFW] = &pciSWAPFW;
1468 pic14Mnemonics[POC_TRIS] = &pciTRIS;
1469 pic14Mnemonics[POC_XORLW] = &pciXORLW;
1470 pic14Mnemonics[POC_XORWF] = &pciXORWF;
1471 pic14Mnemonics[POC_XORFW] = &pciXORFW;
1472 pic14Mnemonics[POC_BANKSEL] = &pciBANKSEL;
1473 pic14Mnemonics[POC_PAGESEL] = &pciPAGESEL;
1475 for(i=0; i<MAX_PIC14MNEMONICS; i++)
1476 if(pic14Mnemonics[i])
1477 hTabAddItem(&pic14MnemonicsHash, mnem2key(pic14Mnemonics[i]->mnemonic), pic14Mnemonics[i]);
1478 pci = hTabFirstItem(pic14MnemonicsHash, &key);
1481 DFPRINTF((stderr, "element %d key %d, mnem %s\n",i++,key,pci->mnemonic));
1482 pci = hTabNextItem(pic14MnemonicsHash, &key);
1485 mnemonics_initialized = 1;
1488 int getpCodePeepCommand(char *cmd);
1490 int getpCode(char *mnem,unsigned dest)
1493 pCodeInstruction *pci;
1494 int key = mnem2key(mnem);
1496 if(!mnemonics_initialized)
1497 pic14initMnemonics();
1499 pci = hTabFirstItemWK(pic14MnemonicsHash, key);
1503 if(STRCASECMP(pci->mnemonic, mnem) == 0) {
1504 if((pci->num_ops <= 1) || (pci->isModReg == dest) || (pci->isBitInst))
1508 pci = hTabNextItemWK (pic14MnemonicsHash);
1515 /*-----------------------------------------------------------------*
1516 * pic14initpCodePeepCommands
1518 *-----------------------------------------------------------------*/
1519 void pic14initpCodePeepCommands(void)
1527 hTabAddItem(&pic14pCodePeepCommandsHash,
1528 mnem2key(peepCommands[i].cmd), &peepCommands[i]);
1530 } while (peepCommands[i].cmd);
1532 pcmd = hTabFirstItem(pic14pCodePeepCommandsHash, &key);
1535 //fprintf(stderr, "peep command %s key %d\n",pcmd->cmd,pcmd->id);
1536 pcmd = hTabNextItem(pic14pCodePeepCommandsHash, &key);
1541 /*-----------------------------------------------------------------
1544 *-----------------------------------------------------------------*/
1546 int getpCodePeepCommand(char *cmd)
1550 int key = mnem2key(cmd);
1553 pcmd = hTabFirstItemWK(pic14pCodePeepCommandsHash, key);
1556 // fprintf(stderr," comparing %s to %s\n",pcmd->cmd,cmd);
1557 if(STRCASECMP(pcmd->cmd, cmd) == 0) {
1561 pcmd = hTabNextItemWK (pic14pCodePeepCommandsHash);
1568 char getpBlock_dbName(pBlock *pb)
1574 return pb->cmemmap->dbName;
1578 void pBlockConvert2ISR(pBlock *pb)
1589 /*-----------------------------------------------------------------*/
1590 /* movepBlock2Head - given the dbname of a pBlock, move all */
1591 /* instances to the front of the doubly linked */
1592 /* list of pBlocks */
1593 /*-----------------------------------------------------------------*/
1595 void movepBlock2Head(char dbName)
1602 pb = the_pFile->pbHead;
1606 if(getpBlock_dbName(pb) == dbName) {
1607 pBlock *pbn = pb->next;
1608 pb->next = the_pFile->pbHead;
1609 the_pFile->pbHead->prev = pb;
1610 the_pFile->pbHead = pb;
1613 pb->prev->next = pbn;
1615 // If the pBlock that we just moved was the last
1616 // one in the link of all of the pBlocks, then we
1617 // need to point the tail to the block just before
1618 // the one we moved.
1619 // Note: if pb->next is NULL, then pb must have
1620 // been the last pBlock in the chain.
1623 pbn->prev = pb->prev;
1625 the_pFile->pbTail = pb->prev;
1636 void copypCode(FILE *of, char dbName)
1640 if(!of || !the_pFile)
1643 for(pb = the_pFile->pbHead; pb; pb = pb->next) {
1644 if(getpBlock_dbName(pb) == dbName) {
1652 void pcode_test(void)
1655 DFPRINTF((stderr,"pcode is alive!\n"));
1665 /* create the file name */
1666 strcpy(buffer,dstFileName);
1667 strcat(buffer,".p");
1669 if( !(pFile = fopen(buffer, "w" ))) {
1670 werror(E_FILE_OPEN_ERR,buffer);
1674 fprintf(pFile,"pcode dump\n\n");
1676 for(pb = the_pFile->pbHead; pb; pb = pb->next) {
1677 fprintf(pFile,"\n\tNew pBlock\n\n");
1679 fprintf(pFile,"%s",pb->cmemmap->sname);
1681 fprintf(pFile,"internal pblock");
1683 fprintf(pFile,", dbName =%c\n",getpBlock_dbName(pb));
1684 printpBlock(pFile,pb);
1688 /*-----------------------------------------------------------------*/
1689 /* int RegCond(pCodeOp *pcop) - if pcop points to the STATUS reg- */
1690 /* ister, RegCond will return the bit being referenced. */
1692 /* fixme - why not just OR in the pcop bit field */
1693 /*-----------------------------------------------------------------*/
1695 static int RegCond(pCodeOp *pcop)
1701 if (pcop->type == PO_GPR_BIT) {
1702 char *name = pcop->name;
1704 name = PCOR(pcop)->r->name;
1705 // if (strcmp(name, pc_status.pcop.name) != 0) { <<< This breaks the peep 2 optimisation
1706 switch(PCORB(pcop)->bit) {
1720 /*-----------------------------------------------------------------*/
1721 /* newpCode - create and return a newly initialized pCode */
1723 /* fixme - rename this */
1725 /* The purpose of this routine is to create a new Instruction */
1726 /* pCode. This is called by gen.c while the assembly code is being */
1730 /* PIC_OPCODE op - the assembly instruction we wish to create. */
1731 /* (note that the op is analogous to but not the */
1732 /* same thing as the opcode of the instruction.) */
1733 /* pCdoeOp *pcop - pointer to the operand of the instruction. */
1736 /* a pointer to the new malloc'd pCode is returned. */
1740 /*-----------------------------------------------------------------*/
1741 pCode *newpCode (PIC_OPCODE op, pCodeOp *pcop)
1743 pCodeInstruction *pci ;
1745 if(!mnemonics_initialized)
1746 pic14initMnemonics();
1748 pci = Safe_calloc(1, sizeof(pCodeInstruction));
1750 if((op>=0) && (op < MAX_PIC14MNEMONICS) && pic14Mnemonics[op]) {
1751 memcpy(pci, pic14Mnemonics[op], sizeof(pCodeInstruction));
1752 pci->pc.id = PCodeID();
1755 if(pci->inCond & PCC_EXAMINE_PCOP)
1756 pci->inCond |= RegCond(pcop);
1758 if(pci->outCond & PCC_EXAMINE_PCOP)
1759 pci->outCond |= RegCond(pcop);
1761 pci->pc.prev = pci->pc.next = NULL;
1762 return (pCode *)pci;
1765 fprintf(stderr, "pCode mnemonic error %s,%d\n",__FUNCTION__,__LINE__);
1771 /*-----------------------------------------------------------------*/
1772 /* newpCodeWild - create a "wild" as in wild card pCode */
1774 /* Wild pcodes are used during the peep hole optimizer to serve */
1775 /* as place holders for any instruction. When a snippet of code is */
1776 /* compared to a peep hole rule, the wild card opcode will match */
1777 /* any instruction. However, the optional operand and label are */
1778 /* additional qualifiers that must also be matched before the */
1779 /* line (of assembly code) is declared matched. Note that the */
1780 /* operand may be wild too. */
1782 /* Note, a wild instruction is specified just like a wild var: */
1783 /* %4 ; A wild instruction, */
1784 /* See the peeph.def file for additional examples */
1786 /*-----------------------------------------------------------------*/
1788 pCode *newpCodeWild(int pCodeID, pCodeOp *optional_operand, pCodeOp *optional_label)
1793 pcw = Safe_calloc(1,sizeof(pCodeWild));
1795 pcw->pci.pc.type = PC_WILD;
1796 pcw->pci.pc.prev = pcw->pci.pc.next = NULL;
1797 pcw->id = PCodeID();
1798 pcw->pci.from = pcw->pci.to = pcw->pci.label = NULL;
1799 pcw->pci.pc.pb = NULL;
1801 // pcw->pci.pc.analyze = genericAnalyze;
1802 pcw->pci.pc.destruct = genericDestruct;
1803 pcw->pci.pc.print = genericPrint;
1805 pcw->id = pCodeID; // this is the 'n' in %n
1806 pcw->operand = optional_operand;
1807 pcw->label = optional_label;
1809 pcw->mustBeBitSkipInst = 0;
1810 pcw->mustNotBeBitSkipInst = 0;
1811 pcw->invertBitSkipInst = 0;
1813 return ( (pCode *)pcw);
1817 /*-----------------------------------------------------------------*/
1818 /* newPcodeInlineP - create a new pCode from a char string */
1819 /*-----------------------------------------------------------------*/
1822 pCode *newpCodeInlineP(char *cP)
1827 pcc = Safe_calloc(1,sizeof(pCodeComment));
1829 pcc->pc.type = PC_INLINE;
1830 pcc->pc.prev = pcc->pc.next = NULL;
1831 pcc->pc.id = PCodeID();
1832 //pcc->pc.from = pcc->pc.to = pcc->pc.label = NULL;
1835 // pcc->pc.analyze = genericAnalyze;
1836 pcc->pc.destruct = genericDestruct;
1837 pcc->pc.print = genericPrint;
1840 pcc->comment = Safe_strdup(cP);
1842 pcc->comment = NULL;
1844 return ( (pCode *)pcc);
1848 /*-----------------------------------------------------------------*/
1849 /* newPcodeCharP - create a new pCode from a char string */
1850 /*-----------------------------------------------------------------*/
1852 pCode *newpCodeCharP(char *cP)
1857 pcc = Safe_calloc(1,sizeof(pCodeComment));
1859 pcc->pc.type = PC_COMMENT;
1860 pcc->pc.prev = pcc->pc.next = NULL;
1861 pcc->pc.id = PCodeID();
1862 //pcc->pc.from = pcc->pc.to = pcc->pc.label = NULL;
1865 // pcc->pc.analyze = genericAnalyze;
1866 pcc->pc.destruct = genericDestruct;
1867 pcc->pc.print = genericPrint;
1870 pcc->comment = Safe_strdup(cP);
1872 pcc->comment = NULL;
1874 return ( (pCode *)pcc);
1878 /*-----------------------------------------------------------------*/
1879 /* newpCodeFunction - */
1880 /*-----------------------------------------------------------------*/
1883 pCode *newpCodeFunction(char *mod,char *f,int isPublic)
1887 pcf = Safe_calloc(1,sizeof(pCodeFunction));
1888 //_ALLOC(pcf,sizeof(pCodeFunction));
1890 pcf->pc.type = PC_FUNCTION;
1891 pcf->pc.prev = pcf->pc.next = NULL;
1892 pcf->pc.id = PCodeID();
1893 //pcf->pc.from = pcf->pc.to = pcf->pc.label = NULL;
1896 // pcf->pc.analyze = genericAnalyze;
1897 pcf->pc.destruct = genericDestruct;
1898 pcf->pc.print = pCodePrintFunction;
1903 //_ALLOC_ATOMIC(pcf->modname,strlen(mod)+1);
1904 pcf->modname = Safe_calloc(1,strlen(mod)+1);
1905 strcpy(pcf->modname,mod);
1907 pcf->modname = NULL;
1910 //_ALLOC_ATOMIC(pcf->fname,strlen(f)+1);
1911 pcf->fname = Safe_calloc(1,strlen(f)+1);
1912 strcpy(pcf->fname,f);
1916 pcf->isPublic = (unsigned)isPublic;
1918 return ( (pCode *)pcf);
1922 /*-----------------------------------------------------------------*/
1924 /*-----------------------------------------------------------------*/
1925 void destructpCodeFlow(pCode *pc)
1927 if(!pc || !isPCFL(pc))
1936 deleteSet(&PCFL(pc)->registers);
1937 deleteSet(&PCFL(pc)->from);
1938 deleteSet(&PCFL(pc)->to);
1943 pCode *newpCodeFlow(void )
1947 //_ALLOC(pcflow,sizeof(pCodeFlow));
1948 pcflow = Safe_calloc(1,sizeof(pCodeFlow));
1950 pcflow->pc.type = PC_FLOW;
1951 pcflow->pc.prev = pcflow->pc.next = NULL;
1952 pcflow->pc.pb = NULL;
1954 // pcflow->pc.analyze = genericAnalyze;
1955 pcflow->pc.destruct = destructpCodeFlow;
1956 pcflow->pc.print = genericPrint;
1958 pcflow->pc.seq = GpcFlowSeq++;
1960 pcflow->from = pcflow->to = NULL;
1962 pcflow->inCond = PCC_NONE;
1963 pcflow->outCond = PCC_NONE;
1965 pcflow->firstBank = 'U'; /* Undetermined */
1966 pcflow->lastBank = 'U'; /* Undetermined */
1968 pcflow->FromConflicts = 0;
1969 pcflow->ToConflicts = 0;
1973 pcflow->registers = newSet();
1975 return ( (pCode *)pcflow);
1979 /*-----------------------------------------------------------------*/
1980 /*-----------------------------------------------------------------*/
1981 pCodeFlowLink *newpCodeFlowLink(pCodeFlow *pcflow)
1983 pCodeFlowLink *pcflowLink;
1985 pcflowLink = Safe_calloc(1,sizeof(pCodeFlowLink));
1987 pcflowLink->pcflow = pcflow;
1988 pcflowLink->bank_conflict = 0;
1993 /*-----------------------------------------------------------------*/
1994 /* newpCodeCSource - create a new pCode Source Symbol */
1995 /*-----------------------------------------------------------------*/
1997 pCode *newpCodeCSource(int ln, char *f, char *l)
2002 pccs = Safe_calloc(1,sizeof(pCodeCSource));
2004 pccs->pc.type = PC_CSOURCE;
2005 pccs->pc.prev = pccs->pc.next = NULL;
2006 pccs->pc.id = PCodeID();
2009 pccs->pc.destruct = genericDestruct;
2010 pccs->pc.print = genericPrint;
2012 pccs->line_number = ln;
2014 pccs->line = Safe_strdup(l);
2019 pccs->file_name = Safe_strdup(f);
2021 pccs->file_name = NULL;
2023 return ( (pCode *)pccs);
2026 /*-----------------------------------------------------------------*/
2027 /* pCodeLabelDestruct - free memory used by a label. */
2028 /*-----------------------------------------------------------------*/
2029 static void pCodeLabelDestruct(pCode *pc)
2035 if((pc->type == PC_LABEL) && PCL(pc)->label)
2036 free(PCL(pc)->label);
2042 pCode *newpCodeLabel(char *name, int key)
2048 pcl = Safe_calloc(1,sizeof(pCodeLabel) );
2050 pcl->pc.type = PC_LABEL;
2051 pcl->pc.prev = pcl->pc.next = NULL;
2052 pcl->pc.id = PCodeID();
2053 //pcl->pc.from = pcl->pc.to = pcl->pc.label = NULL;
2056 // pcl->pc.analyze = genericAnalyze;
2057 pcl->pc.destruct = pCodeLabelDestruct;
2058 pcl->pc.print = pCodePrintLabel;
2064 sprintf(s,"_%05d_DS_",key);
2069 pcl->label = Safe_strdup(s);
2071 //fprintf(stderr,"newpCodeLabel: key=%d, name=%s\n",key, ((s)?s:""));
2072 return ( (pCode *)pcl);
2077 /*-----------------------------------------------------------------*/
2078 /* newpBlock - create and return a pointer to a new pBlock */
2079 /*-----------------------------------------------------------------*/
2080 pBlock *newpBlock(void)
2085 PpB = Safe_calloc(1,sizeof(pBlock) );
2086 PpB->next = PpB->prev = NULL;
2088 PpB->function_entries = PpB->function_exits = PpB->function_calls = NULL;
2089 PpB->tregisters = NULL;
2091 PpB->FlowTree = NULL;
2097 /*-----------------------------------------------------------------*/
2098 /* newpCodeChain - create a new chain of pCodes */
2099 /*-----------------------------------------------------------------*
2101 * This function will create a new pBlock and the pointer to the
2102 * pCode that is passed in will be the first pCode in the block.
2103 *-----------------------------------------------------------------*/
2106 pBlock *newpCodeChain(memmap *cm,char c, pCode *pc)
2109 pBlock *pB = newpBlock();
2111 pB->pcHead = pB->pcTail = pc;
2118 /*-----------------------------------------------------------------*/
2119 /* newpCodeOpLabel - Create a new label given the key */
2120 /* Note, a negative key means that the label is part of wild card */
2121 /* (and hence a wild card label) used in the pCodePeep */
2122 /* optimizations). */
2123 /*-----------------------------------------------------------------*/
2125 pCodeOp *newpCodeOpLabel(char *name, int key)
2128 static int label_key=-1;
2132 pcop = Safe_calloc(1,sizeof(pCodeOpLabel) );
2133 pcop->type = PO_LABEL;
2138 sprintf(s=buffer,"_%05d_DS_",key);
2140 s = name, key = label_key--;
2142 PCOLAB(pcop)->offset = 0;
2144 pcop->name = Safe_strdup(s);
2146 ((pCodeOpLabel *)pcop)->key = key;
2148 //fprintf(stderr,"newpCodeOpLabel: key=%d, name=%s\n",key,((s)?s:""));
2152 /*-----------------------------------------------------------------*/
2153 /*-----------------------------------------------------------------*/
2154 pCodeOp *newpCodeOpLit(int lit)
2160 pcop = Safe_calloc(1,sizeof(pCodeOpLit) );
2161 pcop->type = PO_LITERAL;
2165 sprintf(s,"0x%02x",lit);
2167 pcop->name = Safe_strdup(s);
2170 ((pCodeOpLit *)pcop)->lit = lit;
2175 /*-----------------------------------------------------------------*/
2176 /*-----------------------------------------------------------------*/
2177 pCodeOp *newpCodeOpImmd(char *name, int offset, int index, int code_space, int is_func)
2181 pcop = Safe_calloc(1,sizeof(pCodeOpImmd) );
2182 pcop->type = PO_IMMEDIATE;
2185 pcop->name = Safe_strdup(name);
2188 r = dirregWithName(name);
2192 //fprintf(stderr, " newpCodeOpImmd reg %s exists\n",name);
2193 PCOI(pcop)->rIdx = r->rIdx;
2195 //fprintf(stderr, " newpCodeOpImmd reg %s doesn't exist\n",name);
2196 PCOI(pcop)->rIdx = -1;
2198 //fprintf(stderr,"%s %s %d\n",__FUNCTION__,name,offset);
2203 PCOI(pcop)->index = index;
2204 PCOI(pcop)->offset = offset;
2205 PCOI(pcop)->_const = code_space;
2206 PCOI(pcop)->_function = is_func;
2211 /*-----------------------------------------------------------------*/
2212 /*-----------------------------------------------------------------*/
2213 pCodeOp *newpCodeOpWild(int id, pCodeWildBlock *pcwb, pCodeOp *subtype)
2219 if(!pcwb || !subtype) {
2220 fprintf(stderr, "Wild opcode declaration error: %s-%d\n",__FILE__,__LINE__);
2224 pcop = Safe_calloc(1,sizeof(pCodeOpWild));
2225 pcop->type = PO_WILD;
2226 sprintf(s,"%%%d",id);
2227 pcop->name = Safe_strdup(s);
2229 PCOW(pcop)->id = id;
2230 PCOW(pcop)->pcwb = pcwb;
2231 PCOW(pcop)->subtype = subtype;
2232 PCOW(pcop)->matched = NULL;
2236 /*-----------------------------------------------------------------*/
2237 /* Find a symbol with matching name */
2238 /*-----------------------------------------------------------------*/
2239 static symbol *symFindWithName(memmap * map, const char *name)
2243 for (sym = setFirstItem(map->syms); sym; sym = setNextItem (map->syms)) {
2244 if (sym->rname && (strcmp(sym->rname,name)==0))
2250 /*-----------------------------------------------------------------*/
2251 /*-----------------------------------------------------------------*/
2252 pCodeOp *newpCodeOpBit(char *name, int ibit, int inBitSpace)
2257 pcop = Safe_calloc(1,sizeof(pCodeOpRegBit) );
2258 pcop->type = PO_GPR_BIT;
2260 PCORB(pcop)->bit = ibit;
2261 PCORB(pcop)->inBitSpace = inBitSpace;
2263 if (name) r = regFindWithName(name);
2265 // Register has not been allocated - check for symbol information
2267 sym = symFindWithName(bit, name);
2268 if (!sym) sym = symFindWithName(sfrbit, name);
2269 if (!sym) sym = symFindWithName(sfr, name);
2271 r = allocNewDirReg(sym->etype,name);
2277 PCOR(pcop)->rIdx = r->rIdx;
2279 pcop->name = Safe_strdup(name);
2280 PCOR(pcop)->r = NULL;
2281 PCOR(pcop)->rIdx = 0;
2286 /*-----------------------------------------------------------------*
2287 * pCodeOp *newpCodeOpReg(int rIdx) - allocate a new register
2289 * If rIdx >=0 then a specific register from the set of registers
2290 * will be selected. If rIdx <0, then a new register will be searched
2292 *-----------------------------------------------------------------*/
2294 pCodeOp *newpCodeOpReg(int rIdx)
2298 pcop = Safe_calloc(1,sizeof(pCodeOpReg) );
2303 PCOR(pcop)->rIdx = rIdx;
2304 PCOR(pcop)->r = pic14_regWithIdx(rIdx);
2306 PCOR(pcop)->r = pic14_findFreeReg(REG_GPR);
2309 PCOR(pcop)->rIdx = PCOR(pcop)->r->rIdx;
2313 pcop->type = PCOR(pcop)->r->pc_type;
2318 pCodeOp *newpCodeOpRegFromStr(char *name)
2322 pcop = Safe_calloc(1,sizeof(pCodeOpReg) );
2323 PCOR(pcop)->r = allocRegByName(name, 1);
2324 PCOR(pcop)->rIdx = PCOR(pcop)->r->rIdx;
2325 pcop->type = PCOR(pcop)->r->pc_type;
2326 pcop->name = PCOR(pcop)->r->name;
2331 pCodeOp *newpCodeOpStr(char *name)
2335 pcop = Safe_calloc(1,sizeof(pCodeOpStr));
2336 pcop->type = PO_STR;
2337 pcop->name = Safe_strdup(name);
2339 PCOS(pcop)->isPublic = 0;
2345 /*-----------------------------------------------------------------*/
2346 /*-----------------------------------------------------------------*/
2348 pCodeOp *newpCodeOp(char *name, PIC_OPTYPE type)
2355 pcop = newpCodeOpBit(name, -1,0);
2359 pcop = newpCodeOpLit(-1);
2363 pcop = newpCodeOpLabel(NULL,-1);
2367 pcop = newpCodeOpReg(-1);
2370 case PO_GPR_POINTER:
2371 case PO_GPR_REGISTER:
2373 pcop = newpCodeOpRegFromStr(name);
2375 pcop = newpCodeOpReg(-1);
2379 pcop = newpCodeOpStr(name);
2383 pcop = Safe_calloc(1,sizeof(pCodeOp) );
2386 pcop->name = Safe_strdup(name);
2394 /*-----------------------------------------------------------------*/
2395 /*-----------------------------------------------------------------*/
2396 void pCodeConstString(char *name, char *value)
2400 // fprintf(stderr, " %s %s %s\n",__FUNCTION__,name,value);
2405 pb = newpCodeChain(NULL, 'P',newpCodeCharP("; Starting pCode block"));
2409 sprintf(buffer,"; %s = %s",name,value);
2411 addpCode2pBlock(pb,newpCodeCharP(buffer));
2412 addpCode2pBlock(pb,newpCodeLabel(name,-1));
2415 addpCode2pBlock(pb,newpCode(POC_RETLW,newpCodeOpLit(*value)));
2421 /*-----------------------------------------------------------------*/
2422 /*-----------------------------------------------------------------*/
2423 void pCodeReadCodeTable(void)
2427 fprintf(stderr, " %s\n",__FUNCTION__);
2429 pb = newpCodeChain(NULL, 'P',newpCodeCharP("; Starting pCode block"));
2433 addpCode2pBlock(pb,newpCodeCharP("; ReadCodeTable - built in function"));
2434 addpCode2pBlock(pb,newpCodeCharP("; Inputs: temp1,temp2 = code pointer"));
2435 addpCode2pBlock(pb,newpCodeCharP("; Outpus: W (from RETLW at temp2:temp1)"));
2436 addpCode2pBlock(pb,newpCodeLabel("ReadCodeTable:",-1));
2438 addpCode2pBlock(pb,newpCode(POC_MOVFW,newpCodeOpRegFromStr("temp2")));
2439 addpCode2pBlock(pb,newpCode(POC_MOVWF,newpCodeOpRegFromStr("PCLATH")));
2440 addpCode2pBlock(pb,newpCode(POC_MOVFW,newpCodeOpRegFromStr("temp1")));
2441 addpCode2pBlock(pb,newpCode(POC_MOVWF,newpCodeOpRegFromStr("PCL")));
2446 /*-----------------------------------------------------------------*/
2447 /* addpCode2pBlock - place the pCode into the pBlock linked list */
2448 /*-----------------------------------------------------------------*/
2449 void addpCode2pBlock(pBlock *pb, pCode *pc)
2456 /* If this is the first pcode to be added to a block that
2457 * was initialized with a NULL pcode, then go ahead and
2458 * make this pcode the head and tail */
2459 pb->pcHead = pb->pcTail = pc;
2462 pb->pcTail->next = pc;
2464 pc->prev = pb->pcTail;
2471 /*-----------------------------------------------------------------*/
2472 /* addpBlock - place a pBlock into the pFile */
2473 /*-----------------------------------------------------------------*/
2474 void addpBlock(pBlock *pb)
2476 // fprintf(stderr," Adding pBlock: dbName =%c\n",getpBlock_dbName(pb));
2479 /* First time called, we'll pass through here. */
2480 //_ALLOC(the_pFile,sizeof(pFile));
2481 the_pFile = Safe_calloc(1,sizeof(pFile));
2482 the_pFile->pbHead = the_pFile->pbTail = pb;
2483 the_pFile->functions = NULL;
2487 the_pFile->pbTail->next = pb;
2488 pb->prev = the_pFile->pbTail;
2490 the_pFile->pbTail = pb;
2493 /*-----------------------------------------------------------------*/
2494 /* removepBlock - remove a pBlock from the pFile */
2495 /*-----------------------------------------------------------------*/
2496 void removepBlock(pBlock *pb)
2504 //fprintf(stderr," Removing pBlock: dbName =%c\n",getpBlock_dbName(pb));
2506 for(pbs = the_pFile->pbHead; pbs; pbs = pbs->next) {
2509 if(pbs == the_pFile->pbHead)
2510 the_pFile->pbHead = pbs->next;
2512 if (pbs == the_pFile->pbTail)
2513 the_pFile->pbTail = pbs->prev;
2516 pbs->next->prev = pbs->prev;
2519 pbs->prev->next = pbs->next;
2526 fprintf(stderr, "Warning: call to %s:%s didn't find pBlock\n",__FILE__,__FUNCTION__);
2530 /*-----------------------------------------------------------------*/
2531 /* printpCode - write the contents of a pCode to a file */
2532 /*-----------------------------------------------------------------*/
2533 void printpCode(FILE *of, pCode *pc)
2544 fprintf(of,"warning - unable to print pCode\n");
2547 /*-----------------------------------------------------------------*/
2548 /* printpBlock - write the contents of a pBlock to a file */
2549 /*-----------------------------------------------------------------*/
2550 void printpBlock(FILE *of, pBlock *pb)
2560 for(pc = pb->pcHead; pc; pc = pc->next)
2565 /*-----------------------------------------------------------------*/
2567 /* pCode processing */
2571 /*-----------------------------------------------------------------*/
2573 void unlinkpCode(pCode *pc)
2579 fprintf(stderr,"Unlinking: ");
2580 printpCode(stderr, pc);
2583 pc->prev->next = pc->next;
2585 pc->next->prev = pc->prev;
2587 pc->prev = pc->next = NULL;
2591 /*-----------------------------------------------------------------*/
2592 /*-----------------------------------------------------------------*/
2594 static void genericDestruct(pCode *pc)
2600 /* For instructions, tell the register (if there's one used)
2601 * that it's no longer needed */
2602 regs *reg = getRegFromInstruction(pc);
2604 deleteSetItem (&(reg->reglives.usedpCodes),pc);
2607 /* Instead of deleting the memory used by this pCode, mark
2608 * the object as bad so that if there's a pointer to this pCode
2609 * dangling around somewhere then (hopefully) when the type is
2610 * checked we'll catch it.
2615 addpCode2pBlock(pb_dead_pcodes, pc);
2622 /*-----------------------------------------------------------------*/
2623 /* Copies the pCodeInstruction flow pointer from source pCode */
2624 /*-----------------------------------------------------------------*/
2625 static void CopyFlow(pCodeInstruction *pcd, pCode *pcs) {
2627 pCodeFlow *pcflow = 0;
2628 for (p=pcs; p; p=p->prev) {
2630 pcflow = PCI(p)->pcflow;
2634 pcflow = (pCodeFlow*)p;
2638 PCI(pcd)->pcflow = pcflow;
2641 /*-----------------------------------------------------------------*/
2642 /* pCodeInsertAfter - splice in the pCode chain starting with pc2 */
2643 /* into the pCode chain containing pc1 */
2644 /*-----------------------------------------------------------------*/
2645 void pCodeInsertAfter(pCode *pc1, pCode *pc2)
2651 pc2->next = pc1->next;
2653 pc1->next->prev = pc2;
2659 /* If this is an instrution type propogate the flow */
2661 CopyFlow(PCI(pc2),pc1);
2664 /*------------------------------------------------------------------*/
2665 /* pCodeInsertBefore - splice in the pCode chain starting with pc2 */
2666 /* into the pCode chain containing pc1 */
2667 /*------------------------------------------------------------------*/
2668 void pCodeInsertBefore(pCode *pc1, pCode *pc2)
2674 pc2->prev = pc1->prev;
2676 pc1->prev->next = pc2;
2682 /* If this is an instrution type propogate the flow */
2684 CopyFlow(PCI(pc2),pc1);
2687 /*-----------------------------------------------------------------*/
2688 /* pCodeOpCopy - copy a pcode operator */
2689 /*-----------------------------------------------------------------*/
2690 pCodeOp *pCodeOpCopy(pCodeOp *pcop)
2692 pCodeOp *pcopnew=NULL;
2697 switch(pcop->type) {
2700 //DFPRINTF((stderr,"pCodeOpCopy bit\n"));
2701 pcopnew = Safe_calloc(1,sizeof(pCodeOpRegBit) );
2702 PCORB(pcopnew)->bit = PCORB(pcop)->bit;
2703 PCORB(pcopnew)->inBitSpace = PCORB(pcop)->inBitSpace;
2708 /* Here we expand the wild card into the appropriate type: */
2709 /* By recursively calling pCodeOpCopy */
2710 //DFPRINTF((stderr,"pCodeOpCopy wild\n"));
2711 if(PCOW(pcop)->matched)
2712 pcopnew = pCodeOpCopy(PCOW(pcop)->matched);
2715 pcopnew = pCodeOpCopy(PCOW(pcop)->subtype);
2716 pcopnew->name = Safe_strdup(PCOW(pcop)->pcwb->vars[PCOW(pcop)->id]);
2717 //DFPRINTF((stderr,"copied a wild op named %s\n",pcopnew->name));
2724 //DFPRINTF((stderr,"pCodeOpCopy label\n"));
2725 pcopnew = Safe_calloc(1,sizeof(pCodeOpLabel) );
2726 PCOLAB(pcopnew)->key = PCOLAB(pcop)->key;
2730 pcopnew = Safe_calloc(1,sizeof(pCodeOpImmd) );
2731 PCOI(pcopnew)->index = PCOI(pcop)->index;
2732 PCOI(pcopnew)->offset = PCOI(pcop)->offset;
2733 PCOI(pcopnew)->_const = PCOI(pcop)->_const;
2734 PCOI(pcopnew)->_function = PCOI(pcop)->_function;
2738 //DFPRINTF((stderr,"pCodeOpCopy lit\n"));
2739 pcopnew = Safe_calloc(1,sizeof(pCodeOpLit) );
2740 PCOL(pcopnew)->lit = PCOL(pcop)->lit;
2745 pcopnew = newpCodeOpBit(pcop->name, PCORB(pcop)->bit,PCORB(pcop)->inBitSpace);
2746 PCOR(pcopnew)->r = PCOR(pcop)->r;
2747 PCOR(pcopnew)->rIdx = PCOR(pcop)->rIdx;
2748 DFPRINTF((stderr," pCodeOpCopy Bit -register index\n"));
2752 case PO_GPR_POINTER:
2753 case PO_GPR_REGISTER:
2757 //DFPRINTF((stderr,"pCodeOpCopy GPR register\n"));
2758 pcopnew = Safe_calloc(1,sizeof(pCodeOpReg) );
2759 PCOR(pcopnew)->r = PCOR(pcop)->r;
2760 PCOR(pcopnew)->rIdx = PCOR(pcop)->rIdx;
2761 PCOR(pcopnew)->instance = PCOR(pcop)->instance;
2762 DFPRINTF((stderr," register index %d\n", PCOR(pcop)->r->rIdx));
2766 //fprintf(stderr,"pCodeOpCopy PO_DIR\n");
2767 pcopnew = Safe_calloc(1,sizeof(pCodeOpReg) );
2768 PCOR(pcopnew)->r = PCOR(pcop)->r;
2769 PCOR(pcopnew)->rIdx = PCOR(pcop)->rIdx;
2770 PCOR(pcopnew)->instance = PCOR(pcop)->instance;
2773 DFPRINTF((stderr,"pCodeOpCopy PO_STATUS\n"));
2774 case PO_SFR_REGISTER:
2782 //DFPRINTF((stderr,"pCodeOpCopy register type %d\n", pcop->type));
2783 pcopnew = Safe_calloc(1,sizeof(pCodeOp) );
2787 pcopnew->type = pcop->type;
2789 pcopnew->name = Safe_strdup(pcop->name);
2791 pcopnew->name = NULL;
2796 /*-----------------------------------------------------------------*/
2797 /* popCopyReg - copy a pcode operator */
2798 /*-----------------------------------------------------------------*/
2799 pCodeOp *popCopyReg(pCodeOpReg *pc)
2803 pcor = Safe_calloc(1,sizeof(pCodeOpReg) );
2804 pcor->pcop.type = pc->pcop.type;
2806 if(!(pcor->pcop.name = Safe_strdup(pc->pcop.name)))
2807 fprintf(stderr,"oops %s %d",__FILE__,__LINE__);
2809 pcor->pcop.name = NULL;
2811 if (pcor->pcop.type == PO_IMMEDIATE){
2812 PCOL(pcor)->lit = PCOL(pc)->lit;
2815 pcor->rIdx = pc->rIdx;
2819 //DEBUGpic14_emitcode ("; ***","%s , copying %s, rIdx=%d",__FUNCTION__,pc->pcop.name,pc->rIdx);
2824 /*-----------------------------------------------------------------*/
2825 /* pCodeInstructionCopy - copy a pCodeInstructionCopy */
2826 /*-----------------------------------------------------------------*/
2827 pCode *pCodeInstructionCopy(pCodeInstruction *pci,int invert)
2829 pCodeInstruction *new_pci;
2832 new_pci = PCI(newpCode(pci->inverted_op,pci->pcop));
2834 new_pci = PCI(newpCode(pci->op,pci->pcop));
2836 new_pci->pc.pb = pci->pc.pb;
2837 new_pci->from = pci->from;
2838 new_pci->to = pci->to;
2839 new_pci->label = pci->label;
2840 new_pci->pcflow = pci->pcflow;
2842 return PCODE(new_pci);
2845 /*-----------------------------------------------------------------*/
2846 /*-----------------------------------------------------------------*/
2847 void pCodeDeleteChain(pCode *f,pCode *t)
2852 DFPRINTF((stderr,"delete pCode:\n"));
2854 //f->print(stderr,f);
2855 //f->delete(f); this dumps core...
2860 /*-----------------------------------------------------------------*/
2861 /*-----------------------------------------------------------------*/
2862 void pBlockRegs(FILE *of, pBlock *pb)
2867 r = setFirstItem(pb->tregisters);
2869 r = setNextItem(pb->tregisters);
2874 /*-----------------------------------------------------------------*/
2875 /*-----------------------------------------------------------------*/
2876 char *get_op(pCodeOp *pcop,char *buffer, size_t size)
2881 int use_buffer = 1; // copy the string to the passed buffer pointer
2886 use_buffer = 0; // Don't bother copying the string to the buffer.
2890 switch(pcop->type) {
2894 SAFE_snprintf(&buffer,&size,"%s",PCOR(pcop)->r->name);
2897 //return PCOR(pcop)->r->name;
2901 if (PCOR(pcop)->r->type == REG_STK)
2902 r = typeRegWithIdx(PCOR(pcop)->r->rIdx,REG_STK,1);
2904 r = pic14_regWithIdx(PCOR(pcop)->r->rIdx);
2907 SAFE_snprintf(&buffer,&size,"%s",r->name);
2917 if(PCOI(pcop)->_const) {
2919 if( PCOI(pcop)->offset && PCOI(pcop)->offset<4) {
2920 switch(PCOI(pcop)->offset) {
2922 SAFE_snprintf(&s,&size,"low %s",pcop->name);
2925 SAFE_snprintf(&s,&size,"high %s",pcop->name);
2928 SAFE_snprintf(&s,&size,"(((%s+%d) >> %d)&0xff)",
2931 8 * PCOI(pcop)->offset );
2934 SAFE_snprintf(&s,&size,"LOW(%s+%d)",pcop->name,PCOI(pcop)->index);
2937 if( PCOI(pcop)->index) { // && PCOI(pcc->pcop)->offset<4) {
2938 SAFE_snprintf(&s,&size,"(%s + %d)",
2940 PCOI(pcop)->index );
2942 switch(PCOI(pcop)->offset) {
2944 SAFE_snprintf(&s,&size,"%s",pcop->name);
2947 SAFE_snprintf(&s,&size,"high %s",pcop->name);
2950 SAFE_snprintf(&s,&size,"(%s >> %d)&0xff",pcop->name, 8*PCOI(pcop)->offset);
2959 //size = sizeof(buffer);
2960 if( PCOR(pcop)->instance) {
2961 SAFE_snprintf(&s,&size,"(%s + %d)",
2963 PCOR(pcop)->instance );
2964 //fprintf(stderr,"PO_DIR %s\n",buffer);
2966 SAFE_snprintf(&s,&size,"%s",pcop->name);
2972 if(PCOLAB(pcop)->offset == 1)
2973 SAFE_snprintf(&s,&size,"HIGH(%s)",pcop->name);
2975 SAFE_snprintf(&s,&size,"%s",pcop->name);
2982 SAFE_snprintf(&buffer,&size,"%s",PCOR(pcop)->r->name);
2985 return PCOR(pcop)->r->name;
2988 /* fall through to the default case */
2992 SAFE_snprintf(&buffer,&size,"%s",pcop->name);
3000 printf("PIC port internal warning: (%s:%d) %s not found\n",
3005 return "NO operand";
3009 /*-----------------------------------------------------------------*/
3010 /*-----------------------------------------------------------------*/
3011 static char *get_op_from_instruction( pCodeInstruction *pcc)
3015 return get_op(pcc->pcop,NULL,0);
3017 return ("ERROR Null: get_op_from_instruction");
3021 /*-----------------------------------------------------------------*/
3022 /*-----------------------------------------------------------------*/
3023 static void pCodeOpPrint(FILE *of, pCodeOp *pcop)
3025 fprintf(of,"pcodeopprint- not implemented\n");
3028 /*-----------------------------------------------------------------*/
3029 /*-----------------------------------------------------------------*/
3030 char *pCode2str(char *str, size_t size, pCode *pc)
3038 SAFE_snprintf(&s,&size, "\t%s\t", PCI(pc)->mnemonic);
3040 if( (PCI(pc)->num_ops >= 1) && (PCI(pc)->pcop)) {
3042 if(PCI(pc)->isBitInst) {
3043 if(PCI(pc)->pcop->type == PO_GPR_BIT) {
3044 char *name = PCI(pc)->pcop->name;
3046 name = PCOR(PCI(pc)->pcop)->r->name;
3047 if( (((pCodeOpRegBit *)(PCI(pc)->pcop))->inBitSpace) )
3048 SAFE_snprintf(&s,&size,"(%s >> 3), (%s & 7)", name, name);
3050 SAFE_snprintf(&s,&size,"%s,%d", name,
3051 (((pCodeOpRegBit *)(PCI(pc)->pcop))->bit)&7);
3052 } else if(PCI(pc)->pcop->type == PO_GPR_BIT) {
3053 SAFE_snprintf(&s,&size,"%s,%d", get_op_from_instruction(PCI(pc)),PCORB(PCI(pc)->pcop)->bit);
3055 SAFE_snprintf(&s,&size,"%s,0 ; ?bug", get_op_from_instruction(PCI(pc)));
3056 //PCI(pc)->pcop->t.bit );
3059 if(PCI(pc)->pcop->type == PO_GPR_BIT) {
3060 if( PCI(pc)->num_ops == 2)
3061 SAFE_snprintf(&s,&size,"(%s >> 3),%c",get_op_from_instruction(PCI(pc)),((PCI(pc)->isModReg) ? 'F':'W'));
3063 SAFE_snprintf(&s,&size,"(1 << (%s & 7))",get_op_from_instruction(PCI(pc)));
3066 SAFE_snprintf(&s,&size,"%s",get_op_from_instruction(PCI(pc)));
3068 if( PCI(pc)->num_ops == 2)
3069 SAFE_snprintf(&s,&size,",%c", ( (PCI(pc)->isModReg) ? 'F':'W'));
3077 /* assuming that comment ends with a \n */
3078 SAFE_snprintf(&s,&size,";%s", ((pCodeComment *)pc)->comment);
3082 /* assuming that inline code ends with a \n */
3083 SAFE_snprintf(&s,&size,"%s", ((pCodeComment *)pc)->comment);
3087 SAFE_snprintf(&s,&size,";label=%s, key=%d\n",PCL(pc)->label,PCL(pc)->key);
3090 SAFE_snprintf(&s,&size,";modname=%s,function=%s: id=%d\n",PCF(pc)->modname,PCF(pc)->fname);
3093 SAFE_snprintf(&s,&size,";\tWild opcode: id=%d\n",PCW(pc)->id);
3096 SAFE_snprintf(&s,&size,";\t--FLOW change\n");
3099 SAFE_snprintf(&s,&size,";#CSRC\t%s %d\n; %s\n", PCCS(pc)->file_name, PCCS(pc)->line_number, PCCS(pc)->line);
3103 SAFE_snprintf(&s,&size,";A bad pCode is being used\n");
3110 /*-----------------------------------------------------------------*/
3111 /* genericPrint - the contents of a pCode to a file */
3112 /*-----------------------------------------------------------------*/
3113 static void genericPrint(FILE *of, pCode *pc)
3121 fprintf(of,";%s\n", ((pCodeComment *)pc)->comment);
3125 fprintf(of,"%s\n", ((pCodeComment *)pc)->comment);
3129 // If the opcode has a label, print that first
3132 pCodeInstruction *pci = PCI(pc);
3133 pBranch *pbl = pci->label;
3134 while(pbl && pbl->pc) {
3135 if(pbl->pc->type == PC_LABEL)
3136 pCodePrintLabel(of, pbl->pc);
3141 genericPrint(of,PCODE(pci->cline));
3144 pCode2str(str, 256, pc);
3146 fprintf(of,"%s",str);
3150 pCodeOpReg *pcor = PCOR(pci->pcop);
3151 fprintf(of, "\t;id=%u,key=%03x",pc->id,pc->seq);
3153 fprintf(of,",flow seq=%03x",pci->pcflow->pc.seq);
3154 if (pcor && pcor->pcop.type==PO_GPR_TEMP && !pcor->r->isFixed)
3155 fprintf(of,",rIdx=r0x%X",pcor->rIdx);
3160 pBranch *dpb = pc->to; // debug
3162 switch ( dpb->pc->type) {
3164 fprintf(of, "\t;%s", PCI(dpb->pc)->mnemonic);
3167 fprintf(of, "\t;label %d", PCL(dpb->pc)->key);
3170 fprintf(of, "\t;function %s", ( (PCF(dpb->pc)->fname) ? (PCF(dpb->pc)->fname) : "[END]"));
3173 fprintf(of, "\t;flow");
3187 fprintf(of,";\tWild opcode: id=%d\n",PCW(pc)->id);
3188 if(PCW(pc)->pci.label)
3189 pCodePrintLabel(of, PCW(pc)->pci.label->pc);
3191 if(PCW(pc)->operand) {
3192 fprintf(of,";\toperand ");
3193 pCodeOpPrint(of,PCW(pc)->operand );
3199 fprintf(of,";<>Start of new flow, seq=0x%x",pc->seq);
3200 if(PCFL(pc)->ancestor)
3201 fprintf(of," ancestor = 0x%x", PCODE(PCFL(pc)->ancestor)->seq);
3208 fprintf(of,";#CSRC\t%s %d\n; %s\n", PCCS(pc)->file_name, PCCS(pc)->line_number, PCCS(pc)->line);
3212 fprintf(of,"unknown pCode type %d\n",pc->type);
3217 /*-----------------------------------------------------------------*/
3218 /* pCodePrintFunction - prints function begin/end */
3219 /*-----------------------------------------------------------------*/
3221 static void pCodePrintFunction(FILE *of, pCode *pc)
3227 if( ((pCodeFunction *)pc)->modname)
3228 fprintf(of,"F_%s",((pCodeFunction *)pc)->modname);
3230 if(PCF(pc)->fname) {
3231 pBranch *exits = PCF(pc)->to;
3233 fprintf(of,"%s\t;Function start\n",PCF(pc)->fname);
3236 exits = exits->next;
3239 fprintf(of,"; %d exit point%c\n",i, ((i==1) ? ' ':'s'));
3242 if((PCF(pc)->from &&
3243 PCF(pc)->from->pc->type == PC_FUNCTION &&
3244 PCF(PCF(pc)->from->pc)->fname) )
3245 fprintf(of,"; exit point of %s\n",PCF(PCF(pc)->from->pc)->fname);
3247 fprintf(of,"; exit point [can't find entry point]\n");
3250 /*-----------------------------------------------------------------*/
3251 /* pCodePrintLabel - prints label */
3252 /*-----------------------------------------------------------------*/
3254 static void pCodePrintLabel(FILE *of, pCode *pc)
3261 fprintf(of,"%s\n",PCL(pc)->label);
3262 else if (PCL(pc)->key >=0)
3263 fprintf(of,"_%05d_DS_:\n",PCL(pc)->key);
3265 fprintf(of,";wild card label: id=%d\n",-PCL(pc)->key);
3268 /*-----------------------------------------------------------------*/
3269 /* unlinkpCodeFromBranch - Search for a label in a pBranch and */
3270 /* remove it if it is found. */
3271 /*-----------------------------------------------------------------*/
3272 static void unlinkpCodeFromBranch(pCode *pcl , pCode *pc)
3279 if(pcl->type == PC_OPCODE)
3280 b = PCI(pcl)->label;
3282 fprintf(stderr, "LINE %d. can't unlink from non opcode\n",__LINE__);
3287 //fprintf (stderr, "%s \n",__FUNCTION__);
3288 //pcl->print(stderr,pcl);
3289 //pc->print(stderr,pc);
3292 //fprintf (stderr, "found label\n");
3296 bprev->next = b->next; /* Not first pCode in chain */
3300 PCI(pcl)->label = b->next; /* First pCode in chain */
3303 return; /* A label can't occur more than once */
3311 /*-----------------------------------------------------------------*/
3312 /*-----------------------------------------------------------------*/
3313 pBranch * pBranchAppend(pBranch *h, pBranch *n)
3332 /*-----------------------------------------------------------------*/
3333 /* pBranchLink - given two pcodes, this function will link them */
3334 /* together through their pBranches */
3335 /*-----------------------------------------------------------------*/
3336 static void pBranchLink(pCodeFunction *f, pCodeFunction *t)
3340 // Declare a new branch object for the 'from' pCode.
3342 //_ALLOC(b,sizeof(pBranch));
3343 b = Safe_calloc(1,sizeof(pBranch));
3344 b->pc = PCODE(t); // The link to the 'to' pCode.
3347 f->to = pBranchAppend(f->to,b);
3349 // Now do the same for the 'to' pCode.
3351 //_ALLOC(b,sizeof(pBranch));
3352 b = Safe_calloc(1,sizeof(pBranch));
3356 t->from = pBranchAppend(t->from,b);
3361 /*-----------------------------------------------------------------*/
3362 /* pBranchFind - find the pBranch in a pBranch chain that contains */
3364 /*-----------------------------------------------------------------*/
3365 static pBranch *pBranchFind(pBranch *pb,pCode *pc)
3378 /*-----------------------------------------------------------------*/
3379 /* pCodeUnlink - Unlink the given pCode from its pCode chain. */
3380 /*-----------------------------------------------------------------*/
3381 static void pCodeUnlink(pCode *pc)
3386 if(!pc->prev || !pc->next) {
3387 fprintf(stderr,"unlinking bad pCode in %s:%d\n",__FILE__,__LINE__);
3391 /* first remove the pCode from the chain */
3392 pc->prev->next = pc->next;
3393 pc->next->prev = pc->prev;
3395 /* Now for the hard part... */
3397 /* Remove the branches */
3401 pc1 = pb1->pc; /* Get the pCode that branches to the
3402 * one we're unlinking */
3404 /* search for the link back to this pCode (the one we're
3406 if(pb2 = pBranchFind(pc1->to,pc)) {
3407 pb2->pc = pc->to->pc; // make the replacement
3409 /* if the pCode we're unlinking contains multiple 'to'
3410 * branches (e.g. this a skip instruction) then we need
3411 * to copy these extra branches to the chain. */
3413 pBranchAppend(pb2, pc->to->next);
3422 /*-----------------------------------------------------------------*/
3423 /*-----------------------------------------------------------------*/
3425 static void genericAnalyze(pCode *pc)
3435 // Go through the pCodes that are in pCode chain and link
3436 // them together through the pBranches. Note, the pCodes
3437 // are linked together as a contiguous stream like the
3438 // assembly source code lines. The linking here mimics this
3439 // except that comments are not linked in.
3441 pCode *npc = pc->next;
3443 if(npc->type == PC_OPCODE || npc->type == PC_LABEL) {
3444 pBranchLink(pc,npc);
3449 /* reached the end of the pcode chain without finding
3450 * an instruction we could link to. */
3454 fprintf(stderr,"analyze PC_FLOW\n");
3458 fprintf(stderr,";A bad pCode is being used\n");
3464 /*-----------------------------------------------------------------*/
3465 /*-----------------------------------------------------------------*/
3466 int compareLabel(pCode *pc, pCodeOpLabel *pcop_label)
3470 if(pc->type == PC_LABEL) {
3471 if( ((pCodeLabel *)pc)->key == pcop_label->key)
3474 if(pc->type == PC_OPCODE) {
3475 pbr = PCI(pc)->label;
3477 if(pbr->pc->type == PC_LABEL) {
3478 if( ((pCodeLabel *)(pbr->pc))->key == pcop_label->key)
3488 /*-----------------------------------------------------------------*/
3489 /*-----------------------------------------------------------------*/
3490 int checkLabel(pCode *pc)
3494 if(pc && isPCI(pc)) {
3495 pbr = PCI(pc)->label;
3497 if(isPCL(pbr->pc) && (PCL(pbr->pc)->key >= 0))
3507 /*-----------------------------------------------------------------*/
3508 /* findLabelinpBlock - Search the pCode for a particular label */
3509 /*-----------------------------------------------------------------*/
3510 pCode * findLabelinpBlock(pBlock *pb,pCodeOpLabel *pcop_label)
3517 for(pc = pb->pcHead; pc; pc = pc->next)
3518 if(compareLabel(pc,pcop_label))
3524 /*-----------------------------------------------------------------*/
3525 /* findLabel - Search the pCode for a particular label */
3526 /*-----------------------------------------------------------------*/
3527 pCode * findLabel(pCodeOpLabel *pcop_label)
3535 for(pb = the_pFile->pbHead; pb; pb = pb->next) {
3536 if( (pc = findLabelinpBlock(pb,pcop_label)) != NULL)
3540 fprintf(stderr,"Couldn't find label %s", pcop_label->pcop.name);
3544 /*-----------------------------------------------------------------*/
3545 /* findNextpCode - given a pCode, find the next of type 'pct' */
3546 /* in the linked list */
3547 /*-----------------------------------------------------------------*/
3548 pCode * findNextpCode(pCode *pc, PC_TYPE pct)
3561 /*-----------------------------------------------------------------*/
3562 /* findPrevpCode - given a pCode, find the previous of type 'pct' */
3563 /* in the linked list */
3564 /*-----------------------------------------------------------------*/
3565 pCode * findPrevpCode(pCode *pc, PC_TYPE pct)
3569 if(pc->type == pct) {
3571 static unsigned int stop;
3573 stop++; // Place break point here
3584 /*-----------------------------------------------------------------*/
3585 /* findNextInstruction - given a pCode, find the next instruction */
3586 /* in the linked list */
3587 /*-----------------------------------------------------------------*/
3588 pCode * findNextInstruction(pCode *pci)
3593 if((pc->type == PC_OPCODE) || (pc->type == PC_WILD)) {
3595 static unsigned int stop;
3597 stop++; // Place break point here
3603 fprintf(stderr,"findNextInstruction: ");
3604 printpCode(stderr, pc);
3609 //fprintf(stderr,"Couldn't find instruction\n");
3613 /*-----------------------------------------------------------------*/
3614 /* findNextInstruction - given a pCode, find the next instruction */
3615 /* in the linked list */
3616 /*-----------------------------------------------------------------*/
3617 pCode * findPrevInstruction(pCode *pci)
3619 return findPrevpCode(pci, PC_OPCODE);
3622 /*-----------------------------------------------------------------*/
3623 /* findFunctionEnd - given a pCode find the end of the function */
3624 /* that contains it */
3625 /*-----------------------------------------------------------------*/
3626 pCode * findFunctionEnd(pCode *pc)
3630 if(pc->type == PC_FUNCTION && !(PCF(pc)->fname))
3636 fprintf(stderr,"Couldn't find function end\n");
3641 /*-----------------------------------------------------------------*/
3642 /* AnalyzeLabel - if the pCode is a label, then merge it with the */
3643 /* instruction with which it is associated. */
3644 /*-----------------------------------------------------------------*/
3645 static void AnalyzeLabel(pCode *pc)
3654 static void AnalyzeGOTO(pCode *pc)
3657 pBranchLink(pc,findLabel( (pCodeOpLabel *) (PCI(pc)->pcop) ));
3661 static void AnalyzeSKIP(pCode *pc)
3664 pBranchLink(pc,findNextInstruction(pc->next));
3665 pBranchLink(pc,findNextInstruction(pc->next->next));
3669 static void AnalyzeRETURN(pCode *pc)
3672 // branch_link(pc,findFunctionEnd(pc->next));
3678 /*-----------------------------------------------------------------*/
3679 /*-----------------------------------------------------------------*/
3680 regs * getRegFromInstruction(pCode *pc)
3686 PCI(pc)->num_ops == 0 )
3689 switch(PCI(pc)->pcop->type) {
3692 return PCOR(PCI(pc)->pcop)->r;
3696 return PCOR(PCI(pc)->pcop)->r;
3699 r = PCOI(PCI(pc)->pcop)->r;
3702 return dirregWithName(PCI(pc)->pcop->name);
3705 r = PCOR(PCI(pc)->pcop)->r;
3708 return dirregWithName(PCI(pc)->pcop->name);
3710 case PO_GPR_REGISTER:
3712 r = PCOR(PCI(pc)->pcop)->r;
3715 return dirregWithName(PCI(pc)->pcop->name);
3727 /*-----------------------------------------------------------------*/
3728 /*-----------------------------------------------------------------*/
3730 void AnalyzepBlock(pBlock *pb)
3737 /* Find all of the registers used in this pBlock
3738 * by looking at each instruction and examining it's
3741 for(pc = pb->pcHead; pc; pc = pc->next) {
3743 /* Is this an instruction with operands? */
3744 if(pc->type == PC_OPCODE && PCI(pc)->pcop) {
3746 if((PCI(pc)->pcop->type == PO_GPR_TEMP)
3747 || ((PCI(pc)->pcop->type == PO_GPR_BIT) && PCOR(PCI(pc)->pcop)->r && (PCOR(PCI(pc)->pcop)->r->pc_type == PO_GPR_TEMP))) {
3749 /* Loop through all of the registers declared so far in
3750 this block and see if we find this one there */
3752 regs *r = setFirstItem(pb->tregisters);
3755 if((r->rIdx == PCOR(PCI(pc)->pcop)->r->rIdx) && (r->type == PCOR(PCI(pc)->pcop)->r->type)) {
3756 PCOR(PCI(pc)->pcop)->r = r;
3759 r = setNextItem(pb->tregisters);
3763 /* register wasn't found */
3764 //r = Safe_calloc(1, sizeof(regs));
3765 //memcpy(r,PCOR(PCI(pc)->pcop)->r, sizeof(regs));
3766 //addSet(&pb->tregisters, r);
3767 addSet(&pb->tregisters, PCOR(PCI(pc)->pcop)->r);
3768 //PCOR(PCI(pc)->pcop)->r = r;
3769 //fprintf(stderr,"added register to pblock: reg %d\n",r->rIdx);
3771 fprintf(stderr,"found register in pblock: reg %d\n",r->rIdx);
3774 if(PCI(pc)->pcop->type == PO_GPR_REGISTER) {
3775 if(PCOR(PCI(pc)->pcop)->r) {
3776 pic14_allocWithIdx (PCOR(PCI(pc)->pcop)->r->rIdx);
3777 DFPRINTF((stderr,"found register in pblock: reg 0x%x\n",PCOR(PCI(pc)->pcop)->r->rIdx));
3779 if(PCI(pc)->pcop->name)
3780 fprintf(stderr,"ERROR: %s is a NULL register\n",PCI(pc)->pcop->name );
3782 fprintf(stderr,"ERROR: NULL register\n");
3791 /*-----------------------------------------------------------------*/
3793 /*-----------------------------------------------------------------*/
3794 void InsertpFlow(pCode *pc, pCode **pflow)
3797 PCFL(*pflow)->end = pc;
3799 if(!pc || !pc->next)
3802 *pflow = newpCodeFlow();
3803 pCodeInsertAfter(pc, *pflow);
3806 /*-----------------------------------------------------------------*/
3807 /* BuildFlow(pBlock *pb) - examine the code in a pBlock and build */
3808 /* the flow blocks. */
3810 * BuildFlow inserts pCodeFlow objects into the pCode chain at each
3811 * point the instruction flow changes.
3813 /*-----------------------------------------------------------------*/
3814 void BuildFlow(pBlock *pb)
3817 pCode *last_pci=NULL;
3824 //fprintf (stderr,"build flow start seq %d ",GpcFlowSeq);
3825 /* Insert a pCodeFlow object at the beginning of a pBlock */
3827 InsertpFlow(pb->pcHead, &pflow);
3829 //pflow = newpCodeFlow(); /* Create a new Flow object */
3830 //pflow->next = pb->pcHead; /* Make the current head the next object */
3831 //pb->pcHead->prev = pflow; /* let the current head point back to the flow object */
3832 //pb->pcHead = pflow; /* Make the Flow object the head */
3835 for( pc = findNextInstruction(pb->pcHead);
3837 pc=findNextInstruction(pc)) {
3840 PCI(pc)->pcflow = PCFL(pflow);
3842 //fprintf(stderr," build: ");
3843 //pflow->print(stderr,pflow);
3845 if( PCI(pc)->isSkip) {
3847 /* The two instructions immediately following this one
3848 * mark the beginning of a new flow segment */
3850 while(pc && PCI(pc)->isSkip) {
3852 PCI(pc)->pcflow = PCFL(pflow);
3856 InsertpFlow(pc, &pflow);
3857 pc=findNextInstruction(pc->next);
3865 PCI(pc)->pcflow = PCFL(pflow);
3867 InsertpFlow(pc, &pflow);
3869 } else if ( PCI(pc)->isBranch && !checkLabel(findNextInstruction(pc->next))) {
3871 InsertpFlow(pc, &pflow);
3874 } else if (checkLabel(pc)) {
3876 /* This instruction marks the beginning of a
3877 * new flow segment */
3882 /* If the previous pCode is not a flow object, then
3883 * insert a new flow object. (This check prevents
3884 * two consecutive flow objects from being insert in
3885 * the case where a skip instruction preceeds an
3886 * instruction containing a label.) */
3888 if(last_pci && (PCI(last_pci)->pcflow == PCFL(pflow)))
3889 InsertpFlow(findPrevInstruction(pc->prev), &pflow);
3891 PCI(pc)->pcflow = PCFL(pflow);
3898 //fprintf (stderr,",end seq %d",GpcFlowSeq);
3900 PCFL(pflow)->end = pb->pcTail;
3903 /*-------------------------------------------------------------------*/
3904 /* unBuildFlow(pBlock *pb) - examine the code in a pBlock and build */
3905 /* the flow blocks. */
3907 * unBuildFlow removes pCodeFlow objects from a pCode chain
3909 /*-----------------------------------------------------------------*/
3910 void unBuildFlow(pBlock *pb)
3925 if(PCI(pc)->pcflow) {
3926 //free(PCI(pc)->pcflow);
3927 PCI(pc)->pcflow = NULL;
3930 } else if(isPCFL(pc) )
3939 /*-----------------------------------------------------------------*/
3940 /*-----------------------------------------------------------------*/
3941 void dumpCond(int cond)
3944 static char *pcc_str[] = {
3958 int ncond = sizeof(pcc_str) / sizeof(char *);
3961 fprintf(stderr, "0x%04X\n",cond);
3963 for(i=0,j=1; i<ncond; i++, j<<=1)
3965 fprintf(stderr, " %s\n",pcc_str[i]);
3969 /*-----------------------------------------------------------------*/
3970 /*-----------------------------------------------------------------*/
3971 void FlowStats(pCodeFlow *pcflow)
3979 fprintf(stderr, " FlowStats - flow block (seq=%d)\n", pcflow->pc.seq);
3981 pc = findNextpCode(PCODE(pcflow), PC_OPCODE);
3984 fprintf(stderr, " FlowStats - empty flow (seq=%d)\n", pcflow->pc.seq);
3989 fprintf(stderr, " FlowStats inCond: ");
3990 dumpCond(pcflow->inCond);
3991 fprintf(stderr, " FlowStats outCond: ");
3992 dumpCond(pcflow->outCond);
3996 /*-----------------------------------------------------------------*
3997 * int isBankInstruction(pCode *pc) - examine the pCode *pc to determine
3998 * if it affects the banking bits.
4000 * return: -1 == Banking bits are unaffected by this pCode.
4002 * return: > 0 == Banking bits are affected.
4004 * If the banking bits are affected, then the returned value describes
4005 * which bits are affected and how they're affected. The lower half
4006 * of the integer maps to the bits that are affected, the upper half
4007 * to whether they're set or cleared.
4009 *-----------------------------------------------------------------*/
4011 #define SET_BANK_BIT (1 << 16)
4012 #define CLR_BANK_BIT 0
4014 static int isBankInstruction(pCode *pc)
4022 if( ( (reg = getRegFromInstruction(pc)) != NULL) && isSTATUS_REG(reg)) {
4024 // Check to see if the register banks are changing
4025 if(PCI(pc)->isModReg) {
4027 pCodeOp *pcop = PCI(pc)->pcop;
4028 switch(PCI(pc)->op) {
4031 if(PCORB(pcop)->bit == PIC_RP0_BIT) {
4032 //fprintf(stderr, " isBankInstruction - Set RP0\n");
4033 return SET_BANK_BIT | PIC_RP0_BIT;
4036 if(PCORB(pcop)->bit == PIC_RP1_BIT) {
4037 //fprintf(stderr, " isBankInstruction - Set RP1\n");
4038 return CLR_BANK_BIT | PIC_RP0_BIT;
4043 if(PCORB(pcop)->bit == PIC_RP0_BIT) {
4044 //fprintf(stderr, " isBankInstruction - Clr RP0\n");
4045 return CLR_BANK_BIT | PIC_RP1_BIT;
4047 if(PCORB(pcop)->bit == PIC_RP1_BIT) {
4048 //fprintf(stderr, " isBankInstruction - Clr RP1\n");
4049 return CLR_BANK_BIT | PIC_RP1_BIT;
4053 //fprintf(stderr, " isBankInstruction - Status register is getting Modified by:\n");
4054 //genericPrint(stderr, pc);
4065 /*-----------------------------------------------------------------*/
4066 /*-----------------------------------------------------------------*/
4068 static void FillFlow(pCodeFlow *pcflow)
4076 // fprintf(stderr, " FillFlow - flow block (seq=%d)\n", pcflow->pc.seq);
4078 pc = findNextpCode(PCODE(pcflow), PC_OPCODE);
4081 //fprintf(stderr, " FillFlow - empty flow (seq=%d)\n", pcflow->pc.seq);
4088 isBankInstruction(pc);
4090 } while (pc && (pc != pcflow->end) && !isPCFL(pc));
4093 fprintf(stderr, " FillFlow - Bad end of flow\n");
4095 fprintf(stderr, " FillFlow - Ending flow with\n ");
4096 pc->print(stderr,pc);
4099 fprintf(stderr, " FillFlow inCond: ");
4100 dumpCond(pcflow->inCond);
4101 fprintf(stderr, " FillFlow outCond: ");
4102 dumpCond(pcflow->outCond);
4107 /*-----------------------------------------------------------------*/
4108 /*-----------------------------------------------------------------*/
4109 void LinkFlow_pCode(pCodeInstruction *from, pCodeInstruction *to)
4111 pCodeFlowLink *fromLink, *toLink;
4113 if(!from || !to || !to->pcflow || !from->pcflow)
4116 fromLink = newpCodeFlowLink(from->pcflow);
4117 toLink = newpCodeFlowLink(to->pcflow);
4119 addSetIfnotP(&(from->pcflow->to), toLink); //to->pcflow);
4120 addSetIfnotP(&(to->pcflow->from), fromLink); //from->pcflow);
4124 /*-----------------------------------------------------------------*
4125 * void LinkFlow(pBlock *pb)
4127 * In BuildFlow, the PIC code has been partitioned into contiguous
4128 * non-branching segments. In LinkFlow, we determine the execution
4129 * order of these segments. For example, if one of the segments ends
4130 * with a skip, then we know that there are two possible flow segments
4131 * to which control may be passed.
4132 *-----------------------------------------------------------------*/
4133 void LinkFlow(pBlock *pb)
4139 //fprintf(stderr,"linkflow \n");
4141 for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
4143 pcflow = findNextpCode(pcflow->next, PC_FLOW) ) {
4146 fprintf(stderr, "LinkFlow - pcflow is not a flow object ");
4148 //fprintf(stderr," link: ");
4149 //pcflow->print(stderr,pcflow);
4151 //FillFlow(PCFL(pcflow));
4153 pc = PCFL(pcflow)->end;
4155 //fprintf(stderr, "LinkFlow - flow block (seq=%d) ", pcflow->seq);
4156 if(isPCI_SKIP(pc)) {
4157 //fprintf(stderr, "ends with skip\n");
4158 //pc->print(stderr,pc);
4159 pct=findNextInstruction(pc->next);
4160 LinkFlow_pCode(PCI(pc),PCI(pct));
4161 pct=findNextInstruction(pct->next);
4162 LinkFlow_pCode(PCI(pc),PCI(pct));
4166 if(isPCI_BRANCH(pc)) {
4167 pCodeOpLabel *pcol = PCOLAB(PCI(pc)->pcop);
4169 //fprintf(stderr, "ends with branch\n ");
4170 //pc->print(stderr,pc);
4172 if(!(pcol && isPCOLAB(pcol))) {
4173 if((PCI(pc)->op != POC_RETLW) && (PCI(pc)->op != POC_RETURN) && (PCI(pc)->op != POC_CALL) && (PCI(pc)->op != POC_RETFIE) ) {
4174 pc->print(stderr,pc);
4175 fprintf(stderr, "ERROR: %s, branch instruction doesn't have label\n",__FUNCTION__);
4180 if( (pct = findLabelinpBlock(pb,pcol)) != NULL)
4181 LinkFlow_pCode(PCI(pc),PCI(pct));
4183 fprintf(stderr, "ERROR: %s, couldn't find label. key=%d,lab=%s\n",
4184 __FUNCTION__,pcol->key,((PCOP(pcol)->name)?PCOP(pcol)->name:"-"));
4185 //fprintf(stderr,"newpCodeOpLabel: key=%d, name=%s\n",key,((s)?s:""));
4191 //fprintf(stderr, "ends with non-branching instruction:\n");
4192 //pc->print(stderr,pc);
4194 LinkFlow_pCode(PCI(pc),PCI(findNextInstruction(pc->next)));
4200 //fprintf(stderr, "ends with unknown\n");
4201 //pc->print(stderr,pc);
4205 //fprintf(stderr, "ends with nothing: ERROR\n");
4209 /*-----------------------------------------------------------------*/
4210 /*-----------------------------------------------------------------*/
4212 /*-----------------------------------------------------------------*/
4213 /*-----------------------------------------------------------------*/
4214 int isPCinFlow(pCode *pc, pCode *pcflow)
4220 if(!isPCI(pc) || !PCI(pc)->pcflow || !isPCFL(pcflow) )
4223 if( PCI(pc)->pcflow->pc.seq == pcflow->seq)
4229 /*-----------------------------------------------------------------*/
4230 /*-----------------------------------------------------------------*/
4232 static void BanksUsedFlow2(pCode *pcflow)
4241 if(!isPCFL(pcflow)) {
4242 fprintf(stderr, "BanksUsed - pcflow is not a flow object ");
4246 pc = findNextInstruction(pcflow->next);
4248 PCFL(pcflow)->lastBank = -1;
4250 while(isPCinFlow(pc,pcflow)) {
4252 int bank_selected = isBankInstruction(pc);
4254 //if(PCI(pc)->pcflow)
4255 //fprintf(stderr,"BanksUsedFlow2, looking at seq %d\n",PCI(pc)->pcflow->pc.seq);
4257 if(bank_selected > 0) {
4258 //fprintf(stderr,"BanksUsed - mucking with bank %d\n",bank_selected);
4260 // This instruction is modifying banking bits before accessing registers
4262 PCFL(pcflow)->firstBank = -1;
4264 if(PCFL(pcflow)->lastBank == -1)
4265 PCFL(pcflow)->lastBank = 0;
4267 bank = (1 << (bank_selected & (PIC_RP0_BIT | PIC_RP1_BIT)));
4268 if(bank_selected & SET_BANK_BIT)
4269 PCFL(pcflow)->lastBank |= bank;
4273 reg = getRegFromInstruction(pc);
4275 if(reg && !isREGinBank(reg, bank)) {
4276 int allbanks = REGallBanks(reg);
4278 PCFL(pcflow)->firstBank = allbanks;
4280 PCFL(pcflow)->lastBank = allbanks;
4287 pc = findNextInstruction(pc->next);
4290 // fprintf(stderr,"BanksUsedFlow2 flow seq=%3d, first bank = 0x%03x, Last bank 0x%03x\n",
4291 // pcflow->seq,PCFL(pcflow)->firstBank,PCFL(pcflow)->lastBank);
4294 /*-----------------------------------------------------------------*/
4295 /*-----------------------------------------------------------------*/
4297 static void BanksUsedFlow(pBlock *pb)
4302 //pb->pcHead->print(stderr, pb->pcHead);
4304 pcflow = findNextpCode(pb->pcHead, PC_FLOW);
4305 //pcflow->print(stderr,pcflow);
4307 for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
4309 pcflow = findNextpCode(pcflow->next, PC_FLOW) ) {
4311 BanksUsedFlow2(pcflow);
4317 /*-----------------------------------------------------------------*/
4318 /* Inserts a new pCodeInstruction before an existing one */
4319 /*-----------------------------------------------------------------*/
4320 static void insertPCodeInstruction(pCodeInstruction *pci, pCodeInstruction *new_pci)
4323 pCodeInsertAfter(pci->pc.prev, &new_pci->pc);
4325 /* Move the label, if there is one */
4328 new_pci->label = pci->label;
4332 /* Move the C code comment, if there is one */
4335 new_pci->cline = pci->cline;
4339 /* The new instruction has the same pcflow block */
4340 new_pci->pcflow = pci->pcflow;
4344 /*-----------------------------------------------------------------*/
4345 /*-----------------------------------------------------------------*/
4346 static void insertBankSwitch(pCodeInstruction *pci, int Set_Clear, int RP_BankBit)
4350 new_pc = newpCode((Set_Clear?POC_BSF:POC_BCF),popCopyGPR2Bit(PCOP(&pc_status),RP_BankBit));
4352 insertPCodeInstruction(pci, PCI(new_pc));
4355 /*-----------------------------------------------------------------*/
4356 /*-----------------------------------------------------------------*/
4357 static void insertBankSel(pCodeInstruction *pci, const char *name)
4361 pCodeOp *pcop = popCopyReg(PCOR(pci->pcop));
4362 pcop->type = PO_GPR_REGISTER; // Sometimes the type is set to legacy 8051 - so override it
4363 if (pcop->name == 0)
4364 pcop->name = strdup(name);
4365 new_pc = newpCode(POC_BANKSEL, pcop);
4367 insertPCodeInstruction(pci, PCI(new_pc));
4370 /*-----------------------------------------------------------------*/
4371 /* If the register is a fixed known addess then we can assign the */
4372 /* bank selection bits. Otherwise the linker is going to assign */
4373 /* the register location and thus has to set bank selection bits */
4374 /* through the banksel directive. */
4375 /* One critical assumption here is that within this C module all */
4376 /* the locally allocated registers are in the same udata sector. */
4377 /* Therefore banksel is only called for external registers or the */
4378 /* first time a local register is encountered. */
4379 /*-----------------------------------------------------------------*/
4380 static int LastRegIdx; /* If the previous register is the same one again then no need to change bank. */
4381 static int BankSelect(pCodeInstruction *pci, int cur_bank, regs *reg)
4384 int a = reg->alias>>7;
4386 return cur_bank; // This register is available in all banks
4387 } else if ((a&1)&&((cur_bank==0)||(cur_bank==1))) {
4388 return cur_bank; // This register is available in banks 0 & 1
4390 if (reg->address&0x80) {
4391 if ((cur_bank==1)||(cur_bank==3)) {
4392 return cur_bank; // This register is available in banks 1 & 3
4395 if ((cur_bank==0)||(cur_bank==1)) {
4396 return cur_bank; // This register is available in banks 0 & 2
4401 if (LastRegIdx == reg->rIdx) // If this is the same register as last time then it is in same bank
4403 LastRegIdx = reg->rIdx;
4406 bank = REG_BANK(reg);
4407 } else if (reg->isExtern) {
4408 bank = 'E'; // Unfixed extern registers are allocated by the linker therefore its bank is unknown
4410 bank = 'L'; // Unfixed local registers are allocated by the linker therefore its bank is unknown
4412 if ((cur_bank == 'L')&&(bank == 'L')) { // If current bank and new bank are both allocated locally by the linker, then assume it is in same bank.
4413 return 'L'; // Local registers are presumed to be in same linker assigned bank
4414 } else if ((bank == 'L')&&(cur_bank != 'L')) { // Reg is now local and linker to assign bank
4415 insertBankSel(pci, reg->name); // Let linker choose the bank selection
4416 } else if (bank == 'E') { // Reg is now extern and linker to assign bank
4417 insertBankSel(pci, reg->name); // Let linker choose the bank selection
4418 } else if ((cur_bank == -1)||(cur_bank == 'L')||(cur_bank == 'E')) { // Current bank unknown and new register bank is known then can set bank bits
4419 insertBankSwitch(pci, bank&1, PIC_RP0_BIT);
4420 if (getMaxRam()&0x100)
4421 insertBankSwitch(pci, bank&2, PIC_RP1_BIT);
4422 } else { // Current bank and new register banks known - can set bank bits
4423 switch((cur_bank^bank) & 3) {
4427 insertBankSwitch(pci, bank&1, PIC_RP0_BIT);
4430 insertBankSwitch(pci, bank&2, PIC_RP1_BIT);
4433 insertBankSwitch(pci, bank&1, PIC_RP0_BIT);
4434 if (getMaxRam()&0x100)
4435 insertBankSwitch(pci, bank&2, PIC_RP1_BIT);
4443 /*-----------------------------------------------------------------*/
4444 /* Check for bank selection pcodes instructions and modify */
4445 /* cur_bank to match. */
4446 /*-----------------------------------------------------------------*/
4447 static int IsBankChange(pCode *pc, regs *reg, int *cur_bank) {
4449 if (isSTATUS_REG(reg)) {
4451 if (PCI(pc)->op == POC_BCF) {
4452 int old_bank = *cur_bank;
4453 if (PCORB(PCI(pc)->pcop)->bit == PIC_RP0_BIT) {
4454 /* If current bank is unknown or linker assigned then set to 0 else just change the bit */
4455 if (*cur_bank & ~(0x3))
4458 *cur_bank = *cur_bank&0x2;
4459 LastRegIdx = reg->rIdx;
4460 } else if (PCORB(PCI(pc)->pcop)->bit == PIC_RP1_BIT) {
4461 /* If current bank is unknown or linker assigned then set to 0 else just change the bit */
4462 if (*cur_bank & ~(0x3))
4465 *cur_bank = *cur_bank&0x1;
4466 LastRegIdx = reg->rIdx;
4468 return old_bank != *cur_bank;
4471 if (PCI(pc)->op == POC_BSF) {
4472 int old_bank = *cur_bank;
4473 if (PCORB(PCI(pc)->pcop)->bit == PIC_RP0_BIT) {
4474 /* If current bank is unknown or linker assigned then set to bit else just change the bit */
4475 if (*cur_bank & ~(0x3))
4478 *cur_bank = (*cur_bank&0x2) | 0x1;
4479 LastRegIdx = reg->rIdx;
4480 } else if (PCORB(PCI(pc)->pcop)->bit == PIC_RP1_BIT) {
4481 /* If current bank is unknown or linker assigned then set to bit else just change the bit */
4482 if (*cur_bank & ~(0x3))
4485 *cur_bank = (*cur_bank&0x1) | 0x2;
4486 LastRegIdx = reg->rIdx;
4488 return old_bank != *cur_bank;
4491 } else if (PCI(pc)->op == POC_BANKSEL) {
4492 int old_bank = *cur_bank;
4493 regs *r = PCOR(PCI(pc)->pcop)->r;
4494 *cur_bank = (!r || r->isExtern) ? 'E' : 'L';
4495 LastRegIdx = reg->rIdx;
4496 return old_bank != *cur_bank;
4502 /*-----------------------------------------------------------------*/
4503 /* Set bank selection if necessary */
4504 /*-----------------------------------------------------------------*/
4505 static int DoBankSelect(pCode *pc, int cur_bank) {
4513 pCode *pcf = findFunction(get_op_from_instruction(PCI(pc)));
4514 if (pcf && isPCF(pcf)) {
4516 int rbank = 'U'; // Undetermined
4517 FixRegisterBanking(pcf->pb,cur_bank); // Ensure this block has had its banks selection done
4518 // Check all the returns to work out what bank is selected
4519 for (pcfr=pcf->pb->pcHead; pcfr; pcfr=pcfr->next) {
4521 if ((PCI(pcfr)->op==POC_RETURN) || (PCI(pcfr)->op==POC_RETLW)) {
4523 rbank = PCFL(pcfr)->lastBank;
4525 if (rbank != PCFL(pcfr)->lastBank)
4526 return -1; // Unknown bank - multiple returns with different banks
4531 return -1; // Unknown bank
4533 } else if (isPCOS(PCI(pc)->pcop) && PCOS(PCI(pc)->pcop)->isPublic) {
4534 /* Extern functions may use registers in different bank - must call banksel */
4535 return -1; /* Unknown bank */
4539 if ((isPCI(pc)) && (PCI(pc)->op == POC_BANKSEL)) {
4540 return -1; /* New bank unknown - linkers choice. */
4543 reg = getRegFromInstruction(pc);
4545 if (IsBankChange(pc,reg,&cur_bank))
4547 if (!isPCI_LIT(pc)) {
4549 /* Examine the instruction before this one to make sure it is
4550 * not a skip type instruction */
4551 pcprev = findPrevpCode(pc->prev, PC_OPCODE);
4553 if(!pcprev || (pcprev && !isPCI_SKIP(pcprev))) {
4554 cur_bank = BankSelect(PCI(pc),cur_bank,reg);
4556 cur_bank = BankSelect(PCI(pcprev),cur_bank,reg);
4558 if (!PCI(pc)->pcflow)
4559 fprintf(stderr,"PCI ID=%d missing flow pointer ???\n",pc->id);
4561 PCI(pc)->pcflow->lastBank = cur_bank; /* Maintain pCodeFlow lastBank state */
4567 /*-----------------------------------------------------------------*/
4568 /*-----------------------------------------------------------------*/
4570 static void FixRegisterBankingInFlow(pCodeFlow *pcfl, int cur_bank)
4578 pc = findNextInstruction(pcfl->pc.next);
4580 while(isPCinFlow(pc,PCODE(pcfl))) {
4582 cur_bank = DoBankSelect(pc,cur_bank);
4584 pc = findNextInstruction(pc->next);
4588 if(pcprev && cur_bank) {
4589 // Set bank state to unknown at the end of each flow block
4595 /*-----------------------------------------------------------------*/
4596 /*int compareBankFlow - compare the banking requirements between */
4598 /*-----------------------------------------------------------------*/
4600 int compareBankFlow(pCodeFlow *pcflow, pCodeFlowLink *pcflowLink, int toORfrom)
4603 if(!pcflow || !pcflowLink || !pcflowLink->pcflow)
4606 if(!isPCFL(pcflow) || !isPCFL(pcflowLink->pcflow))
4609 if(pcflow->firstBank == -1)
4613 if(pcflowLink->pcflow->firstBank == -1) {
4614 pCodeFlowLink *pctl = setFirstItem( toORfrom ?
4615 pcflowLink->pcflow->to :
4616 pcflowLink->pcflow->from);
4617 return compareBankFlow(pcflow, pctl, toORfrom);
4621 if(pcflow->lastBank == pcflowLink->pcflow->firstBank)
4624 pcflowLink->bank_conflict++;
4625 pcflowLink->pcflow->FromConflicts++;
4626 pcflow->ToConflicts++;
4629 if(pcflow->firstBank == pcflowLink->pcflow->lastBank)
4632 pcflowLink->bank_conflict++;
4633 pcflowLink->pcflow->ToConflicts++;
4634 pcflow->FromConflicts++;
4638 fprintf(stderr,"compare flow found conflict: seq %d from conflicts %d, to conflicts %d\n",
4639 pcflowLink->pcflow->pc.seq,
4640 pcflowLink->pcflow->FromConflicts,
4641 pcflowLink->pcflow->ToConflicts);
4647 /*-----------------------------------------------------------------*/
4648 /*-----------------------------------------------------------------*/
4650 void FixBankFlow(pBlock *pb)
4654 pCodeFlowLink *pcfl;
4656 pCode *pcflow_max_To=NULL;
4657 pCode *pcflow_max_From=NULL;
4658 int max_ToConflicts=0;
4659 int max_FromConflicts=0;
4661 /fprintf(stderr,"Fix Bank flow \n");
4662 pcflow = findNextpCode(pb->pcHead, PC_FLOW);
4666 First loop through all of the flow objects in this pcode block
4667 and fix the ones that have banking conflicts between the
4671 //fprintf(stderr, "FixBankFlow - Phase 1\n");
4673 for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
4675 pcflow = findNextpCode(pcflow->next, PC_FLOW) ) {
4677 if(!isPCFL(pcflow)) {
4678 fprintf(stderr, "FixBankFlow - pcflow is not a flow object ");
4682 if(PCFL(pcflow)->firstBank != PCFL(pcflow)->lastBank &&
4683 PCFL(pcflow)->firstBank >= 0 &&
4684 PCFL(pcflow)->lastBank >= 0 ) {
4686 int cur_bank = (PCFL(pcflow)->firstBank < PCFL(pcflow)->lastBank) ?
4687 PCFL(pcflow)->firstBank : PCFL(pcflow)->lastBank;
4689 FixRegisterBankingInFlow(PCFL(pcflow),cur_bank);
4690 BanksUsedFlow2(pcflow);
4695 //fprintf(stderr, "FixBankFlow - Phase 2\n");
4697 for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
4699 pcflow = findNextpCode(pcflow->next, PC_FLOW) ) {
4704 if(!isPCFL(pcflow)) {
4705 fprintf(stderr, "FixBankFlow - pcflow is not a flow object ");
4709 PCFL(pcflow)->FromConflicts = 0;
4710 PCFL(pcflow)->ToConflicts = 0;
4715 //fprintf(stderr, " FixBankFlow flow seq %d\n",pcflow->seq);
4716 pcfl = setFirstItem(PCFL(pcflow)->from);
4719 pc = PCODE(pcfl->pcflow);
4722 fprintf(stderr,"oops dumpflow - to is not a pcflow\n");
4723 pc->print(stderr,pc);
4726 nConflicts += compareBankFlow(PCFL(pcflow), pcfl, 0);
4729 pcfl=setNextItem(PCFL(pcflow)->from);
4732 if((nFlows >= 2) && nConflicts && (PCFL(pcflow)->firstBank>0)) {
4733 //fprintf(stderr, " From conflicts flow seq %d, nflows %d ,nconflicts %d\n",pcflow->seq,nFlows, nConflicts);
4735 FixRegisterBankingInFlow(PCFL(pcflow),-1);
4736 BanksUsedFlow2(pcflow);
4738 continue; / * Don't need to check the flow from here - it's already been fixed * /
4745 pcfl = setFirstItem(PCFL(pcflow)->to);
4748 pc = PCODE(pcfl->pcflow);
4750 fprintf(stderr,"oops dumpflow - to is not a pcflow\n");
4751 pc->print(stderr,pc);
4754 nConflicts += compareBankFlow(PCFL(pcflow), pcfl, 1);
4757 pcfl=setNextItem(PCFL(pcflow)->to);
4760 if((nFlows >= 2) && nConflicts &&(nConflicts != nFlows) && (PCFL(pcflow)->lastBank>0)) {
4761 //fprintf(stderr, " To conflicts flow seq %d, nflows %d ,nconflicts %d\n",pcflow->seq,nFlows, nConflicts);
4763 FixRegisterBankingInFlow(PCFL(pcflow),-1);
4764 BanksUsedFlow2(pcflow);
4769 Loop through the flow objects again and find the ones with the
4773 for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
4775 pcflow = findNextpCode(pcflow->next, PC_FLOW) ) {
4777 if(PCFL(pcflow)->ToConflicts > max_ToConflicts)
4778 pcflow_max_To = pcflow;
4780 if(PCFL(pcflow)->FromConflicts > max_FromConflicts)
4781 pcflow_max_From = pcflow;
4785 fprintf(stderr,"compare flow Max To conflicts: seq %d conflicts %d\n",
4786 PCFL(pcflow_max_To)->pc.seq,
4787 PCFL(pcflow_max_To)->ToConflicts);
4790 fprintf(stderr,"compare flow Max From conflicts: seq %d conflicts %d\n",
4791 PCFL(pcflow_max_From)->pc.seq,
4792 PCFL(pcflow_max_From)->FromConflicts);
4797 /*-----------------------------------------------------------------*/
4798 /*-----------------------------------------------------------------*/
4799 void DumpFlow(pBlock *pb)
4803 pCodeFlowLink *pcfl;
4806 fprintf(stderr,"Dump flow \n");
4807 pb->pcHead->print(stderr, pb->pcHead);
4809 pcflow = findNextpCode(pb->pcHead, PC_FLOW);
4810 pcflow->print(stderr,pcflow);
4812 for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
4814 pcflow = findNextpCode(pcflow->next, PC_FLOW) ) {
4816 if(!isPCFL(pcflow)) {
4817 fprintf(stderr, "DumpFlow - pcflow is not a flow object ");
4820 fprintf(stderr,"dumping: ");
4821 pcflow->print(stderr,pcflow);
4822 FlowStats(PCFL(pcflow));
4824 for(pcfl = setFirstItem(PCFL(pcflow)->to); pcfl; pcfl=setNextItem(PCFL(pcflow)->to)) {
4826 pc = PCODE(pcfl->pcflow);
4828 fprintf(stderr, " from seq %d:\n",pc->seq);
4830 fprintf(stderr,"oops dumpflow - from is not a pcflow\n");
4831 pc->print(stderr,pc);
4836 for(pcfl = setFirstItem(PCFL(pcflow)->to); pcfl; pcfl=setNextItem(PCFL(pcflow)->to)) {
4838 pc = PCODE(pcfl->pcflow);
4840 fprintf(stderr, " to seq %d:\n",pc->seq);
4842 fprintf(stderr,"oops dumpflow - to is not a pcflow\n");
4843 pc->print(stderr,pc);
4852 /*-----------------------------------------------------------------*/
4853 /*-----------------------------------------------------------------*/
4854 int OptimizepBlock(pBlock *pb)
4859 if(!pb || !peepOptimizing)
4862 DFPRINTF((stderr," Optimizing pBlock: %c\n",getpBlock_dbName(pb)));
4864 for(pc = pb->pcHead; pc; pc = pc->next)
4865 matches += pCodePeepMatchRule(pc);
4868 pc = findNextInstruction(pb->pcHead);
4876 if(pCodePeepMatchRule(pc)) {
4881 pc = findNextInstruction(pcprev->next);
4883 pc = findNextInstruction(pb->pcHead);
4885 pc = findNextInstruction(pc->next);
4889 DFPRINTF((stderr," Optimizing pBlock: %c - matches=%d\n",getpBlock_dbName(pb),matches));
4894 /*-----------------------------------------------------------------*/
4895 /* pBlockRemoveUnusedLabels - remove the pCode labels from the */
4896 /*-----------------------------------------------------------------*/
4897 pCode * findInstructionUsingLabel(pCodeLabel *pcl, pCode *pcs)
4901 for(pc = pcs; pc; pc = pc->next) {
4903 if((pc->type == PC_OPCODE) &&
4905 (PCI(pc)->pcop->type == PO_LABEL) &&
4906 (PCOLAB(PCI(pc)->pcop)->key == pcl->key))
4914 /*-----------------------------------------------------------------*/
4915 /*-----------------------------------------------------------------*/
4916 void exchangeLabels(pCodeLabel *pcl, pCode *pc)
4923 (PCI(pc)->pcop->type == PO_LABEL)) {
4925 pCodeOpLabel *pcol = PCOLAB(PCI(pc)->pcop);
4927 //fprintf(stderr,"changing label key from %d to %d\n",pcol->key, pcl->key);
4929 free(pcol->pcop.name);
4931 /* If the key is negative, then we (probably) have a label to
4932 * a function and the name is already defined */
4935 sprintf(s=buffer,"_%05d_DS_",pcl->key);
4939 //sprintf(buffer,"_%05d_DS_",pcl->key);
4941 fprintf(stderr, "ERROR %s:%d function label is null\n",__FUNCTION__,__LINE__);
4943 pcol->pcop.name = Safe_strdup(s);
4944 pcol->key = pcl->key;
4945 //pc->print(stderr,pc);
4952 /*-----------------------------------------------------------------*/
4953 /* pBlockRemoveUnusedLabels - remove the pCode labels from the */
4954 /* pCode chain if they're not used. */
4955 /*-----------------------------------------------------------------*/
4956 void pBlockRemoveUnusedLabels(pBlock *pb)
4958 pCode *pc; pCodeLabel *pcl;
4963 for(pc = pb->pcHead; (pc=findNextInstruction(pc->next)) != NULL; ) {
4965 pBranch *pbr = PCI(pc)->label;
4966 if(pbr && pbr->next) {
4967 pCode *pcd = pb->pcHead;
4969 //fprintf(stderr, "multiple labels\n");
4970 //pc->print(stderr,pc);
4975 while ( (pcd = findInstructionUsingLabel(PCL(PCI(pc)->label->pc), pcd)) != NULL) {
4976 //fprintf(stderr,"Used by:\n");
4977 //pcd->print(stderr,pcd);
4979 exchangeLabels(PCL(pbr->pc),pcd);
4988 for(pc = pb->pcHead; pc; pc = pc->next) {
4990 if(isPCL(pc)) // Label pcode
4992 else if (isPCI(pc) && PCI(pc)->label) // pcode instruction with a label
4993 pcl = PCL(PCI(pc)->label->pc);
4996 //fprintf(stderr," found A LABEL !!! key = %d, %s\n", pcl->key,pcl->label);
4998 /* This pCode is a label, so search the pBlock to see if anyone
5001 if( (pcl->key>0) && (!findInstructionUsingLabel(pcl, pb->pcHead))) {
5002 //if( !findInstructionUsingLabel(pcl, pb->pcHead)) {
5003 /* Couldn't find an instruction that refers to this label
5004 * So, unlink the pCode label from it's pCode chain
5005 * and destroy the label */
5006 //fprintf(stderr," removed A LABEL !!! key = %d, %s\n", pcl->key,pcl->label);
5008 DFPRINTF((stderr," !!! REMOVED A LABEL !!! key = %d, %s\n", pcl->key,pcl->label));
5009 if(pc->type == PC_LABEL) {
5011 pCodeLabelDestruct(pc);
5013 unlinkpCodeFromBranch(pc, PCODE(pcl));
5014 /*if(pc->label->next == NULL && pc->label->pc == NULL) {
5025 /*-----------------------------------------------------------------*/
5026 /* pBlockMergeLabels - remove the pCode labels from the pCode */
5027 /* chain and put them into pBranches that are */
5028 /* associated with the appropriate pCode */
5030 /*-----------------------------------------------------------------*/
5031 void pBlockMergeLabels(pBlock *pb)
5034 pCode *pc, *pcnext=NULL;
5039 /* First, Try to remove any unused labels */
5040 //pBlockRemoveUnusedLabels(pb);
5042 /* Now loop through the pBlock and merge the labels with the opcodes */
5045 // for(pc = pb->pcHead; pc; pc = pc->next) {
5048 pCode *pcn = pc->next;
5050 if(pc->type == PC_LABEL) {
5052 //fprintf(stderr," checking merging label %s\n",PCL(pc)->label);
5053 //fprintf(stderr,"Checking label key = %d\n",PCL(pc)->key);
5054 if((pcnext = findNextInstruction(pc) )) {
5056 // Unlink the pCode label from it's pCode chain
5059 //fprintf(stderr,"Merged label key = %d\n",PCL(pc)->key);
5060 // And link it into the instruction's pBranch labels. (Note, since
5061 // it's possible to have multiple labels associated with one instruction
5062 // we must provide a means to accomodate the additional labels. Thus
5063 // the labels are placed into the singly-linked list "label" as
5064 // opposed to being a single member of the pCodeInstruction.)
5066 //_ALLOC(pbr,sizeof(pBranch));
5067 pbr = Safe_calloc(1,sizeof(pBranch));
5071 PCI(pcnext)->label = pBranchAppend(PCI(pcnext)->label,pbr);
5074 fprintf(stderr, "WARNING: couldn't associate label %s with an instruction\n",PCL(pc)->label);
5076 } else if(pc->type == PC_CSOURCE) {
5078 /* merge the source line symbolic info into the next instruction */
5079 if((pcnext = findNextInstruction(pc) )) {
5081 // Unlink the pCode label from it's pCode chain
5083 PCI(pcnext)->cline = PCCS(pc);
5084 //fprintf(stderr, "merging CSRC\n");
5085 //genericPrint(stderr,pcnext);
5091 pBlockRemoveUnusedLabels(pb);
5095 /*-----------------------------------------------------------------*/
5096 /*-----------------------------------------------------------------*/
5097 int OptimizepCode(char dbName)
5099 #define MAX_PASSES 4
5108 DFPRINTF((stderr," Optimizing pCode\n"));
5112 for(pb = the_pFile->pbHead; pb; pb = pb->next) {
5113 if('*' == dbName || getpBlock_dbName(pb) == dbName)
5114 matches += OptimizepBlock(pb);
5117 while(matches && ++passes < MAX_PASSES);
5122 /*-----------------------------------------------------------------*/
5123 /* popCopyGPR2Bit - copy a pcode operator */
5124 /*-----------------------------------------------------------------*/
5126 pCodeOp *popCopyGPR2Bit(pCodeOp *pc, int bitval)
5130 pcop = newpCodeOpBit(pc->name, bitval, 0);
5132 if( !( (pcop->type == PO_LABEL) ||
5133 (pcop->type == PO_LITERAL) ||
5134 (pcop->type == PO_STR) ))
5135 PCOR(pcop)->r = PCOR(pc)->r; /* This is dangerous... */
5141 /*-----------------------------------------------------------------*/
5142 /*-----------------------------------------------------------------*/
5143 static void FixRegisterBanking(pBlock *pb,int cur_bank)
5146 int firstBank = 'U';
5151 for (pc=pb->pcHead; pc; pc=pc->next) {
5153 firstBank = PCFL(pc)->firstBank;
5157 if (firstBank != 'U') {
5158 /* This block has already been done */
5159 if (firstBank != cur_bank) {
5160 /* This block has started with a different bank - must adjust it */
5161 if ((firstBank != -1)&&(firstBank != 'E')) { /* The first bank start off unknown or extern then need not worry as banksel will be called */
5164 regs *reg = getRegFromInstruction(pc);
5166 DoBankSelect(pc,cur_bank);
5176 /* loop through all of the pCodes within this pblock setting the bank selection, ignoring any branching */
5179 for (pc=pb->pcHead; pc; pc=pc->next) {
5181 PCFL(pc)->firstBank = cur_bank;
5184 cur_bank = DoBankSelect(pc,cur_bank);
5187 /* Trace through branches and set the bank selection as required. */
5190 for (pc=pb->pcHead; pc; pc=pc->next) {
5192 PCFL(pc)->firstBank = cur_bank;
5196 if (PCI(pc)->op == POC_GOTO) {
5197 int lastRegIdx = LastRegIdx;
5199 /* Trace through branch */
5200 pCode *pcl = findLabel(PCOLAB(PCI(pcb)->pcop));
5203 regs *reg = getRegFromInstruction(pcl);
5205 int bankUnknown = -1;
5206 if (IsBankChange(pcl,reg,&bankUnknown)) /* Look for any bank change */
5208 if (cur_bank != DoBankSelect(pcl,cur_bank)) /* Set bank selection if necessary */
5214 LastRegIdx = lastRegIdx;
5216 /* Keep track out current bank */
5217 regs *reg = getRegFromInstruction(pc);
5219 IsBankChange(pc,reg,&cur_bank);
5226 /*-----------------------------------------------------------------*/
5227 /*-----------------------------------------------------------------*/
5228 void pBlockDestruct(pBlock *pb)
5239 /*-----------------------------------------------------------------*/
5240 /* void mergepBlocks(char dbName) - Search for all pBlocks with the*/
5241 /* name dbName and combine them */
5242 /* into one block */
5243 /*-----------------------------------------------------------------*/
5244 void mergepBlocks(char dbName)
5247 pBlock *pb, *pbmerged = NULL,*pbn;
5249 pb = the_pFile->pbHead;
5251 //fprintf(stderr," merging blocks named %c\n",dbName);
5255 //fprintf(stderr,"looking at %c\n",getpBlock_dbName(pb));
5256 if( getpBlock_dbName(pb) == dbName) {
5258 //fprintf(stderr," merged block %c\n",dbName);
5263 addpCode2pBlock(pbmerged, pb->pcHead);
5264 /* addpCode2pBlock doesn't handle the tail: */
5265 pbmerged->pcTail = pb->pcTail;
5267 pb->prev->next = pbn;
5269 pbn->prev = pb->prev;
5274 //printpBlock(stderr, pbmerged);
5281 /*-----------------------------------------------------------------*/
5282 /* AnalyzeFlow - Examine the flow of the code and optimize */
5284 /* level 0 == minimal optimization */
5285 /* optimize registers that are used only by two instructions */
5286 /* level 1 == maximal optimization */
5287 /* optimize by looking at pairs of instructions that use the */
5289 /*-----------------------------------------------------------------*/
5291 void AnalyzeFlow(int level)
5293 static int times_called=0;
5301 /* if this is not the first time this function has been called,
5302 then clean up old flow information */
5303 if(times_called++) {
5304 for(pb = the_pFile->pbHead; pb; pb = pb->next)
5307 RegsUnMapLiveRanges();
5313 /* Phase 2 - Flow Analysis - Register Banking
5315 * In this phase, the individual flow blocks are examined
5316 * and register banking is fixed.
5319 //for(pb = the_pFile->pbHead; pb; pb = pb->next)
5320 //FixRegisterBanking(pb);
5322 /* Phase 2 - Flow Analysis
5324 * In this phase, the pCode is partition into pCodeFlow
5325 * blocks. The flow blocks mark the points where a continuous
5326 * stream of instructions changes flow (e.g. because of
5327 * a call or goto or whatever).
5330 for(pb = the_pFile->pbHead; pb; pb = pb->next)
5334 /* Phase 2 - Flow Analysis - linking flow blocks
5336 * In this phase, the individual flow blocks are examined
5337 * to determine their order of excution.
5340 for(pb = the_pFile->pbHead; pb; pb = pb->next)
5343 /* Phase 3 - Flow Analysis - Flow Tree
5345 * In this phase, the individual flow blocks are examined
5346 * to determine their order of excution.
5349 for(pb = the_pFile->pbHead; pb; pb = pb->next)
5353 /* Phase x - Flow Analysis - Used Banks
5355 * In this phase, the individual flow blocks are examined
5356 * to determine the Register Banks they use
5359 // for(pb = the_pFile->pbHead; pb; pb = pb->next)
5363 for(pb = the_pFile->pbHead; pb; pb = pb->next)
5364 pCodeRegMapLiveRanges(pb);
5366 RemoveUnusedRegisters();
5368 // for(pb = the_pFile->pbHead; pb; pb = pb->next)
5369 pCodeRegOptimizeRegUsage(level);
5375 for(pb = the_pFile->pbHead; pb; pb = pb->next)
5380 for(pb = the_pFile->pbHead; pb; pb = pb->next) {
5382 for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
5383 (pcflow = findNextpCode(pcflow, PC_FLOW)) != NULL;
5384 pcflow = pcflow->next) {
5386 FillFlow(PCFL(pcflow));
5391 for(pb = the_pFile->pbHead; pb; pb = pb->next) {
5393 for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
5394 (pcflow = findNextpCode(pcflow, PC_FLOW)) != NULL;
5395 pcflow = pcflow->next) {
5397 FlowStats(PCFL(pcflow));
5403 /*-----------------------------------------------------------------*/
5404 /* AnalyzeBanking - Called after the memory addresses have been */
5405 /* assigned to the registers. */
5407 /*-----------------------------------------------------------------*/
5409 void AnalyzeBanking(void)
5413 if(!picIsInitialized()) {
5414 setDefMaxRam(); // Max RAM has not been included, so use default setting
5417 /* Phase x - Flow Analysis - Used Banks
5419 * In this phase, the individual flow blocks are examined
5420 * to determine the Register Banks they use
5426 // for(pb = the_pFile->pbHead; pb; pb = pb->next)
5427 // BanksUsedFlow(pb);
5428 for(pb = the_pFile->pbHead; pb; pb = pb->next)
5429 FixRegisterBanking(pb,-1); // cur_bank is unknown
5433 /*-----------------------------------------------------------------*/
5434 /*-----------------------------------------------------------------*/
5435 DEFSETFUNC (resetrIdx)
5437 regs *r = (regs *)item;
5445 /*-----------------------------------------------------------------*/
5446 /* InitRegReuse - Initialises variables for code analyzer */
5447 /*-----------------------------------------------------------------*/
5449 void InitReuseReg(void)
5451 /* Find end of statically allocated variables for start idx */
5452 unsigned maxIdx = 0x20; /* Start from begining of GPR. Note may not be 0x20 on some PICs */
5454 for (r = setFirstItem(dynDirectRegs); r; r = setNextItem(dynDirectRegs)) {
5455 if (r->type != REG_SFR) {
5456 maxIdx += r->size; /* Increment for all statically allocated variables */
5460 applyToSet(dynAllocRegs,resetrIdx); /* Reset all rIdx to zero. */
5463 /*-----------------------------------------------------------------*/
5464 /*-----------------------------------------------------------------*/
5465 static unsigned register_reassign(pBlock *pb, unsigned idx)
5469 /* check recursion */
5470 pc = setFirstItem(pb->function_entries);
5476 DFPRINTF((stderr," reassigning registers for function \"%s\"\n",PCF(pc)->fname));
5478 if (pb->tregisters) {
5480 for (r = setFirstItem(pb->tregisters); r; r = setNextItem(pb->tregisters)) {
5481 if (r->type == REG_GPR) {
5483 if (r->rIdx < (int)idx) {
5486 if (peakIdx < idx) peakIdx = idx;
5487 sprintf(s,"r0x%02X", r->rIdx);
5488 DFPRINTF((stderr," reassigning register \"%s\" to \"%s\"\n",r->name,s));
5490 r->name = Safe_strdup(s);
5496 for(pc = setFirstItem(pb->function_calls); pc; pc = setNextItem(pb->function_calls)) {
5498 if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL) {
5499 char *dest = get_op_from_instruction(PCI(pc));
5501 pCode *pcn = findFunction(dest);
5503 register_reassign(pcn->pb,idx);
5512 /*------------------------------------------------------------------*/
5513 /* ReuseReg were call tree permits */
5515 /* Re-allocate the GPR for optimum reuse for a given pblock */
5516 /* eg if a function m() calls function f1() and f2(), where f1 */
5517 /* allocates a local variable vf1 and f2 allocates a local */
5518 /* variable vf2. Then providing f1 and f2 do not call each other */
5519 /* they may share the same general purpose registers for vf1 and */
5521 /* This is done by first setting the the regs rIdx to start after */
5522 /* all the global variables, then walking through the call tree */
5523 /* renaming the registers to match their new idx and incrementng */
5524 /* it as it goes. If a function has already been called it will */
5525 /* only rename the registers if it has already used up those */
5526 /* registers ie rIdx of the function's registers is lower than the */
5527 /* current rIdx. That way the register will not be reused while */
5528 /* still being used by an eariler function call. */
5530 /* Note for this to work the functions need to be declared static. */
5532 /*------------------------------------------------------------------*/
5537 for(pb = the_pFile->pbHead; pb; pb = pb->next) {
5538 /* Non static functions can be called from other modules so their registers must reassign */
5539 if (pb->function_entries&&(PCF(setFirstItem(pb->function_entries))->isPublic||!pb->visited))
5540 register_reassign(pb,peakIdx);
5544 /*-----------------------------------------------------------------*/
5545 /* buildCallTree - look at the flow and extract all of the calls */
5547 /*-----------------------------------------------------------------*/
5549 void buildCallTree(void )
5558 /* Now build the call tree.
5559 First we examine all of the pCodes for functions.
5560 Keep in mind that the function boundaries coincide
5561 with pBlock boundaries.
5563 The algorithm goes something like this:
5564 We have two nested loops. The outer loop iterates
5565 through all of the pBlocks/functions. The inner
5566 loop iterates through all of the pCodes for
5567 a given pBlock. When we begin iterating through
5568 a pBlock, the variable pc_fstart, pCode of the start
5569 of a function, is cleared. We then search for pCodes
5570 of type PC_FUNCTION. When one is encountered, we
5571 initialize pc_fstart to this and at the same time
5572 associate a new pBranch object that signifies a
5573 branch entry. If a return is found, then this signifies
5574 a function exit point. We'll link the pCodes of these
5575 returns to the matching pc_fstart.
5577 When we're done, a doubly linked list of pBranches
5578 will exist. The head of this list is stored in
5579 `the_pFile', which is the meta structure for all
5580 of the pCode. Look at the printCallTree function
5581 on how the pBranches are linked together.
5584 for(pb = the_pFile->pbHead; pb; pb = pb->next) {
5585 pCode *pc_fstart=NULL;
5586 for(pc = pb->pcHead; pc; pc = pc->next) {
5588 pCodeFunction *pcf = PCF(pc);
5591 if(STRCASECMP(pcf->fname, "_main") == 0) {
5592 //fprintf(stderr," found main \n");
5593 pb->cmemmap = NULL; /* FIXME do we need to free ? */
5597 pbr = Safe_calloc(1,sizeof(pBranch));
5598 pbr->pc = pc_fstart = pc;
5601 the_pFile->functions = pBranchAppend(the_pFile->functions,pbr);
5603 // Here's a better way of doing the same:
5604 addSet(&pb->function_entries, pc);
5607 // Found an exit point in a function, e.g. return
5608 // (Note, there may be more than one return per function)
5610 pBranchLink(PCF(pc_fstart), pcf);
5612 addSet(&pb->function_exits, pc);
5614 } else if(isCALL(pc)) {
5615 addSet(&pb->function_calls,pc);
5621 /*-----------------------------------------------------------------*/
5622 /* AnalyzepCode - parse the pCode that has been generated and form */
5623 /* all of the logical connections. */
5625 /* Essentially what's done here is that the pCode flow is */
5627 /*-----------------------------------------------------------------*/
5629 void AnalyzepCode(char dbName)
5640 /* Phase 1 - Register allocation and peep hole optimization
5642 * The first part of the analysis is to determine the registers
5643 * that are used in the pCode. Once that is done, the peep rules
5644 * are applied to the code. We continue to loop until no more
5645 * peep rule optimizations are found (or until we exceed the
5646 * MAX_PASSES threshold).
5648 * When done, the required registers will be determined.
5654 DFPRINTF((stderr," Analyzing pCode: PASS #%d\n",i+1));
5656 /* First, merge the labels with the instructions */
5657 for(pb = the_pFile->pbHead; pb; pb = pb->next) {
5658 if('*' == dbName || getpBlock_dbName(pb) == dbName) {
5660 DFPRINTF((stderr," analyze and merging block %c\n",dbName));
5661 pBlockMergeLabels(pb);
5664 DFPRINTF((stderr," skipping block analysis dbName=%c blockname=%c\n",dbName,getpBlock_dbName));
5668 changes = OptimizepCode(dbName);
5670 } while(changes && (i++ < MAX_PASSES));
5675 /*-----------------------------------------------------------------*/
5676 /* ispCodeFunction - returns true if *pc is the pCode of a */
5678 /*-----------------------------------------------------------------*/
5679 bool ispCodeFunction(pCode *pc)
5682 if(pc && pc->type == PC_FUNCTION && PCF(pc)->fname)
5688 /*-----------------------------------------------------------------*/
5689 /* findFunction - Search for a function by name (given the name) */
5690 /* in the set of all functions that are in a pBlock */
5691 /* (note - I expect this to change because I'm planning to limit */
5692 /* pBlock's to just one function declaration */
5693 /*-----------------------------------------------------------------*/
5694 pCode *findFunction(char *fname)
5701 for(pb = the_pFile->pbHead; pb; pb = pb->next) {
5703 pc = setFirstItem(pb->function_entries);
5706 if((pc->type == PC_FUNCTION) &&
5708 (strcmp(fname, PCF(pc)->fname)==0))
5711 pc = setNextItem(pb->function_entries);
5719 void MarkUsedRegisters(set *regset)
5724 for(r1=setFirstItem(regset); r1; r1=setNextItem(regset)) {
5725 r2 = pic14_regWithIdx(r1->rIdx);
5733 void pBlockStats(FILE *of, pBlock *pb)
5739 fprintf(of,";***\n; pBlock Stats: dbName = %c\n;***\n",getpBlock_dbName(pb));
5741 // for now just print the first element of each set
5742 pc = setFirstItem(pb->function_entries);
5744 fprintf(of,";entry: ");
5747 pc = setFirstItem(pb->function_exits);
5749 fprintf(of,";has an exit\n");
5753 pc = setFirstItem(pb->function_calls);
5755 fprintf(of,";functions called:\n");
5758 if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL) {
5759 fprintf(of,"; %s\n",get_op_from_instruction(PCI(pc)));
5761 pc = setNextItem(pb->function_calls);
5765 r = setFirstItem(pb->tregisters);
5767 int n = elementsInSet(pb->tregisters);
5769 fprintf(of,";%d compiler assigned register%c:\n",n, ( (n!=1) ? 's' : ' '));
5772 fprintf(of,"; %s\n",r->name);
5773 r = setNextItem(pb->tregisters);
5778 /*-----------------------------------------------------------------*/
5779 /*-----------------------------------------------------------------*/
5781 static void sequencepCode(void)
5787 for(pb = the_pFile->pbHead; pb; pb = pb->next) {
5789 pb->seq = GpCodeSequenceNumber+1;
5791 for( pc = pb->pcHead; pc; pc = pc->next)
5792 pc->seq = ++GpCodeSequenceNumber;
5798 /*-----------------------------------------------------------------*/
5799 /*-----------------------------------------------------------------*/
5801 set *register_usage(pBlock *pb)
5804 set *registers=NULL;
5805 set *registersInCallPath = NULL;
5807 / * check recursion * /
5809 pc = setFirstItem(pb->function_entries);
5816 if(pc->type != PC_FUNCTION)
5817 fprintf(stderr,"%s, first pc is not a function???\n",__FUNCTION__);
5819 pc = setFirstItem(pb->function_calls);
5820 for( ; pc; pc = setNextItem(pb->function_calls)) {
5822 if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL) {
5823 char *dest = get_op_from_instruction(PCI(pc));
5825 pcn = findFunction(dest);
5827 registersInCallPath = register_usage(pcn->pb);
5829 fprintf(stderr,"BUG? pCode isn't a POC_CALL %d\n",__LINE__);
5834 pBlockStats(stderr,pb); // debug
5837 // Mark the registers in this block as used.
5839 MarkUsedRegisters(pb->tregisters);
5840 if(registersInCallPath) {
5841 / * registers were used in the functions this pBlock has called * /
5842 / * so now, we need to see if these collide with the ones we are * /
5845 regs *r1,*r2, *newreg;
5847 DFPRINTF((stderr,"comparing registers\n"));
5849 r1 = setFirstItem(registersInCallPath);
5851 if (r1->type != REG_STK) {
5852 r2 = setFirstItem(pb->tregisters);
5854 while(r2 && (r2->type != REG_STK)) {
5856 if(r2->rIdx == r1->rIdx) {
5857 newreg = pic14_findFreeReg(REG_GPR);
5861 DFPRINTF((stderr,"Bummer, no more registers.\n"));
5865 DFPRINTF((stderr,"Cool found register collision nIdx=%d moving to %d\n",
5866 r1->rIdx, newreg->rIdx));
5867 r2->rIdx = newreg->rIdx;
5869 r2->name = Safe_strdup(newreg->name);
5873 newreg->wasUsed = 1;
5875 r2 = setNextItem(pb->tregisters);
5879 r1 = setNextItem(registersInCallPath);
5882 / * Collisions have been resolved. Now free the registers in the call path * /
5883 r1 = setFirstItem(registersInCallPath);
5885 newreg = pic14_regWithIdx(r1->rIdx);
5886 if (newreg) newreg->isFree = 1;
5887 r1 = setNextItem(registersInCallPath);
5891 // MarkUsedRegisters(pb->registers);
5893 registers = unionSets(pb->tregisters, registersInCallPath, THROW_NONE);
5896 DFPRINTF((stderr,"returning regs\n"));
5898 DFPRINTF((stderr,"not returning regs\n"));
5900 DFPRINTF((stderr,"pBlock after register optim.\n"));
5901 pBlockStats(stderr,pb); // debug
5908 /*-----------------------------------------------------------------*/
5909 /* printCallTree - writes the call tree to a file */
5911 /*-----------------------------------------------------------------*/
5912 void pct2(FILE *of,pBlock *pb,int indent)
5916 // set *registersInCallPath = NULL;
5922 return; //recursion ?
5924 pc = setFirstItem(pb->function_entries);
5931 for(i=0;i<indent;i++) // Indentation
5934 if(pc->type == PC_FUNCTION)
5935 fprintf(of,"%s\n",PCF(pc)->fname);
5940 pc = setFirstItem(pb->function_calls);
5941 for( ; pc; pc = setNextItem(pb->function_calls)) {
5943 if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL) {
5944 char *dest = get_op_from_instruction(PCI(pc));
5946 pcn = findFunction(dest);
5948 pct2(of,pcn->pb,indent+1);
5950 fprintf(of,"BUG? pCode isn't a POC_CALL %d\n",__LINE__);
5958 /*-----------------------------------------------------------------*/
5959 /* printCallTree - writes the call tree to a file */
5961 /*-----------------------------------------------------------------*/
5963 void printCallTree(FILE *of)
5975 fprintf(of, "\npBlock statistics\n");
5976 for(pb = the_pFile->pbHead; pb; pb = pb->next )
5981 fprintf(of,"Call Tree\n");
5982 pbr = the_pFile->functions;
5986 if(!ispCodeFunction(pc))
5987 fprintf(of,"bug in call tree");
5990 fprintf(of,"Function: %s\n", PCF(pc)->fname);
5992 while(pc->next && !ispCodeFunction(pc->next)) {
5994 if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL)
5995 fprintf(of,"\t%s\n",get_op_from_instruction(PCI(pc)));
6003 fprintf(of,"\n**************\n\na better call tree\n");
6004 for(pb = the_pFile->pbHead; pb; pb = pb->next) {
6009 for(pb = the_pFile->pbHead; pb; pb = pb->next) {
6010 fprintf(of,"block dbname: %c\n", getpBlock_dbName(pb));
6016 /*-----------------------------------------------------------------*/
6018 /*-----------------------------------------------------------------*/
6020 void InlineFunction(pBlock *pb)
6028 pc = setFirstItem(pb->function_calls);
6030 for( ; pc; pc = setNextItem(pb->function_calls)) {
6033 pCode *pcn = findFunction(get_op_from_instruction(PCI(pc)));
6034 pCode *pcp = pc->prev;
6040 if(pcn && isPCF(pcn) && (PCF(pcn)->ncalled == 1) && !PCF(pcn)->isPublic && (pcp && (isPCI_BITSKIP(pcp)||!isPCI_SKIP(pcp)))) { /* Bit skips can be inverted other skips can not */
6042 InlineFunction(pcn->pb);
6045 At this point, *pc points to a CALL mnemonic, and
6046 *pcn points to the function that is being called.
6048 To in-line this call, we need to remove the CALL
6049 and RETURN(s), and link the function pCode in with
6056 /* Check if previous instruction was a bit skip */
6057 if (isPCI_BITSKIP(pcp)) {
6059 /* Invert skip instruction and add a goto */
6060 PCI(pcp)->op = (PCI(pcp)->op == POC_BTFSS) ? POC_BTFSC : POC_BTFSS;
6062 if(isPCL(pc_call->next)) { // Label pcode
6063 pcl = PCL(pc_call->next);
6064 } else if (isPCI(pc_call->next) && PCI(pc_call->next)->label) { // pcode instruction with a label
6065 pcl = PCL(PCI(pc_call->next)->label->pc);
6067 pcl = PCL(newpCodeLabel(NULL, newiTempLabel(NULL)->key+100));
6068 PCI(pc_call->next)->label->pc = (struct pCode*)pcl;
6070 pCodeInsertAfter(pcp, newpCode(POC_GOTO, newpCodeOp(pcl->label,PO_STR)));
6073 /* remove callee pBlock from the pBlock linked list */
6074 removepBlock(pcn->pb);
6082 /* Remove the Function pCode */
6083 pct = findNextInstruction(pcn->next);
6085 /* Link the function with the callee */
6086 if (pcp) pcp->next = pcn->next;
6087 pcn->next->prev = pcp;
6089 /* Convert the function name into a label */
6091 pbr = Safe_calloc(1,sizeof(pBranch));
6092 pbr->pc = newpCodeLabel(PCF(pcn)->fname, -1);
6094 PCI(pct)->label = pBranchAppend(PCI(pct)->label,pbr);
6095 PCI(pct)->label = pBranchAppend(PCI(pct)->label,PCI(pc_call)->label);
6097 /* turn all of the return's except the last into goto's */
6098 /* check case for 2 instruction pBlocks */
6099 pce = findNextInstruction(pcn->next);
6101 pCode *pce_next = findNextInstruction(pce->next);
6103 if(pce_next == NULL) {
6104 /* found the last return */
6105 pCode *pc_call_next = findNextInstruction(pc_call->next);
6107 //fprintf(stderr,"found last return\n");
6108 //pce->print(stderr,pce);
6109 pce->prev->next = pc_call->next;
6110 pc_call->next->prev = pce->prev;
6111 PCI(pc_call_next)->label = pBranchAppend(PCI(pc_call_next)->label,
6120 fprintf(stderr,"BUG? pCode isn't a POC_CALL %d\n",__LINE__);
6126 /*-----------------------------------------------------------------*/
6128 /*-----------------------------------------------------------------*/
6130 void InlinepCode(void)
6139 if(!functionInlining)
6142 /* Loop through all of the function definitions and count the
6143 * number of times each one is called */
6144 //fprintf(stderr,"inlining %d\n",__LINE__);
6146 for(pb = the_pFile->pbHead; pb; pb = pb->next) {
6148 pc = setFirstItem(pb->function_calls);
6150 for( ; pc; pc = setNextItem(pb->function_calls)) {
6153 pCode *pcn = findFunction(get_op_from_instruction(PCI(pc)));
6154 if(pcn && isPCF(pcn)) {
6155 PCF(pcn)->ncalled++;
6158 fprintf(stderr,"BUG? pCode isn't a POC_CALL %d\n",__LINE__);
6163 //fprintf(stderr,"inlining %d\n",__LINE__);
6165 /* Now, Loop through the function definitions again, but this
6166 * time inline those functions that have only been called once. */
6168 InlineFunction(the_pFile->pbHead);
6169 //fprintf(stderr,"inlining %d\n",__LINE__);
6171 for(pb = the_pFile->pbHead; pb; pb = pb->next)
projects / fw / sdcc / blob