1 /*-------------------------------------------------------------------------
3 main.c - pic16 specific general functions.
5 Written by - Scott Dattalo scott@dattalo.com
6 Ported to PIC16 by - Martin Dubuc m.debuc@rogers.com
8 Note that mlh prepended _pic16_ on the static functions. Makes
9 it easier to set a breakpoint using the debugger.
12 This program is free software; you can redistribute it and/or modify it
13 under the terms of the GNU General Public License as published by the
14 Free Software Foundation; either version 2, or (at your option) any
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 -------------------------------------------------------------------------*/
37 static char _defaultRules[] =
42 /* list of key words used by pic16 */
43 static char *_pic16_keywords[] =
76 pic16_sectioninfo_t pic16_sectioninfo;
79 extern char *pic16_processor_base_name(void);
81 void pic16_pCodeInitRegisters(void);
83 void pic16_assignRegisters (ebbIndex *);
85 static int regParmFlg = 0; /* determine if we can register a parameter */
87 pic16_options_t pic16_options;
89 extern set *includeDirsSet;
90 extern set *dataDirsSet;
91 extern set *libFilesSet;
93 /* Also defined in gen.h, but the #include is commented out */
94 /* for an unknowned reason. - EEP */
95 void pic16_emitDebuggerSymbol (char *);
97 extern regs* newReg(short type, short pc_type, int rIdx, char *name, int size, int alias, operand *refop);
98 extern void pic16_emitConfigRegs(FILE *of);
99 extern void pic16_emitIDRegs(FILE *of);
106 asm_addTree (&asm_asxxxx_mapping);
107 pic16_pCodeInitRegisters();
112 _pic16_reset_regparm (void)
118 _pic16_regparm (sym_link * l)
120 /* force all parameters via SEND/RECEIVE */
121 if(0 /*pic16_options.ip_stack*/) {
122 /* for this processor it is simple
123 * can pass only the first parameter in a register */
124 if(regParmFlg)return 0;
126 return 1; //regParmFlg;
128 /* otherwise pass all arguments in registers via SEND/RECEIVE */
135 int initsfpnt=0; /* set to 1 if source provides a pragma for stack
136 * so glue() later emits code to initialize stack/frame pointers */
139 set *sectNames=NULL; /* list of section listed in pragma directives */
140 set *sectSyms=NULL; /* list of symbols set in a specific section */
141 set *wparamList=NULL;
143 set *asmInlineMap=NULL;
147 unsigned want_libc: 1;
148 unsigned want_libm: 1;
149 unsigned want_libio: 1;
150 unsigned want_libdebug: 1;
151 } libflags = { 0, 0, 0, 0, 0 };
155 _process_pragma(const char *sz)
157 static const char *WHITE = " \t\n";
158 static const char *WHITECOMMA = " \t\n,";
159 char *ptr = strtok((char *)sz, WHITE);
161 /* #pragma maxram [maxram] */
162 if (startsWith (ptr, "maxram")) {
163 char *maxRAM = strtok((char *)NULL, WHITE);
165 if (maxRAM != (char *)NULL) {
169 maxRAMVal = constVal(maxRAM);
170 maxRAMaddress = (int)floatFromVal(maxRAMVal);
171 pic16_setMaxRAM(maxRAMaddress);
177 /* #pragma stack [stack-position] [stack-len] */
178 if(startsWith(ptr, "stack")) {
179 char *stackPosS = strtok((char *)NULL, WHITE);
180 char *stackLenS = strtok((char *)NULL, WHITE);
186 stackPosVal = constVal( stackPosS );
187 stackPos = (unsigned int)floatFromVal( stackPosVal );
190 stackLenVal = constVal( stackLenS );
191 stackLen = (unsigned int)floatFromVal( stackLenVal );
196 fprintf(stderr, "%s:%d: warning: setting stack to default size %d (0x%04x)\n",
197 filename, lineno-1, stackLen, stackLen);
199 // fprintf(stderr, "%s:%d setting stack to default size %d\n", __FILE__, __LINE__, stackLen);
202 // fprintf(stderr, "Initializing stack pointer at 0x%x len 0x%x\n", stackPos, stackLen);
204 reg=newReg(REG_SFR, PO_SFR_REGISTER, stackPos, "_stack", stackLen-1, 0, NULL);
205 addSet(&pic16_fix_udata, reg);
207 reg = newReg(REG_SFR, PO_SFR_REGISTER, stackPos + stackLen-1, "_stack_end", 1, 0, NULL);
208 addSet(&pic16_fix_udata, reg);
210 sym = newSymbol("stack", 0);
211 sprintf(sym->rname, "_%s", sym->name);
212 addSet(&publics, sym);
214 sym = newSymbol("stack_end", 0);
215 sprintf(sym->rname, "_%s", sym->name);
216 addSet(&publics, sym);
218 initsfpnt = 1; // force glue() to initialize stack/frame pointers */
223 /* #pragma code [symbol] [location] */
224 if(startsWith(ptr, "code")) {
225 char *symname = strtok((char *)NULL, WHITE);
226 char *location = strtok((char *)NULL, WHITE);
230 absS = Safe_calloc(1, sizeof(absSym));
231 sprintf(absS->name, "_%s", symname);
233 addr = constVal( location );
234 absS->address = (unsigned int)floatFromVal( addr );
236 if((absS->address % 2) != 0) {
238 fprintf(stderr, "%s:%d: warning: code memory locations should be word aligned, will locate to 0x%06x instead\n",
239 filename, lineno-1, absS->address);
242 addSet(&absSymSet, absS);
243 // fprintf(stderr, "%s:%d symbol %s will be placed in location 0x%06x in code memory\n",
244 // __FILE__, __LINE__, symname, absS->address);
249 /* #pragma udata [section-name] [symbol] */
250 if(startsWith(ptr, "udata")) {
251 char *sectname = strtok((char *)NULL, WHITE);
252 char *symname = strtok((char *)NULL, WHITE);
259 ssym = Safe_calloc(1, sizeof(sectSym));
260 ssym->name = Safe_calloc(1, strlen(symname)+2);
261 sprintf(ssym->name, "%s%s", port->fun_prefix, symname);
264 addSet(§Syms, ssym);
266 nsym = newSymbol(symname, 0);
267 strcpy(nsym->rname, ssym->name);
270 checkAddSym(&publics, nsym);
274 for(snam=setFirstItem(sectNames);snam;snam=setNextItem(sectNames)) {
275 if(!strcmp(sectname, snam->name)){ found=1; break; }
279 snam = Safe_calloc(1, sizeof(sectName));
280 snam->name = Safe_strdup( sectname );
281 snam->regsSet = NULL;
283 addSet(§Names, snam);
286 ssym->section = snam;
289 fprintf(stderr, "%s:%d placing symbol %s at section %s (%p)\n", __FILE__, __LINE__,
290 ssym->name, snam->name, snam);
293 symname = strtok((char *)NULL, WHITE);
299 /* #pragma wparam function1[, function2[,...]] */
300 if(startsWith(ptr, "wparam")) {
301 char *fname = strtok((char *)NULL, WHITECOMMA);
305 fprintf(stderr, "PIC16 Warning: `%s' wparam pragma is obsolete. use function attribute `wparam' instead.\n", fname);
306 addSet(&wparamList, Safe_strdup(fname));
308 // debugf("passing with WREG to %s\n", fname);
309 fname = strtok((char *)NULL, WHITECOMMA);
315 /* #pragma library library_module */
316 if(startsWith(ptr, "library")) {
317 char *lmodule = strtok((char *)NULL, WHITE);
321 * c link the C library
322 * math link the math library
323 * io link the IO library
324 * debug link the debug libary
325 * anything else, will link as-is */
327 if(!strcmp(lmodule, "c"))libflags.want_libc = 1;
328 else if(!strcmp(lmodule, "math"))libflags.want_libm = 1;
329 else if(!strcmp(lmodule, "io"))libflags.want_libio = 1;
330 else if(!strcmp(lmodule, "debug"))libflags.want_libdebug = 1;
331 else if(!strcmp(lmodule, "ignore"))libflags.ignore = 1;
333 if(!libflags.ignore) {
334 fprintf(stderr, "link library %s\n", lmodule);
335 addSetHead(&libFilesSet, lmodule);
343 if(startsWith(ptr, "inline")) {
344 char *tmp = strtok((char *)NULL, WHITECOMMA);
347 addSet(&asmInlineMap, Safe_strdup( tmp ));
348 tmp = strtok((char *)NULL, WHITECOMMA);
354 for(s = setFirstItem(asmInlineMap); s ; s = setNextItem(asmInlineMap)) {
355 debugf("inline asm: `%s'\n", s);
365 #define REP_UDATA "--preplace-udata-with="
367 #define STACK_MODEL "--pstack-model="
368 #define OPT_BANKSEL "--obanksel="
370 #define ALT_ASM "--asm="
371 #define ALT_LINK "--link="
373 #define IVT_LOC "--ivt-loc="
374 #define NO_DEFLIBS "--nodefaultlibs"
375 #define MPLAB_COMPAT "--mplab-comp"
377 #define NL_OPT "--nl="
378 #define USE_CRT "--use-crt="
380 #define OFMSG_LRSUPPORT "--flr-support"
382 #define OPTIMIZE_GOTO "--optimize-goto"
383 #define OPTIMIZE_CMP "--optimize-cmp"
384 #define OPTIMIZE_DF "--optimize-df"
389 int pic16_mplab_comp=0;
390 extern int pic16_debug_verbose;
391 extern int pic16_ralloc_debug;
392 extern int pic16_pcode_verbose;
395 int pic16_enable_peeps=0;
396 int pic16_nl=0; /* 0 for LF, 1 for CRLF */
398 OPTION pic16_optionsTable[]= {
399 { 0, NO_DEFLIBS, &pic16_options.nodefaultlibs, "do not link default libraries when linking"},
400 { 0, "--pno-banksel", &pic16_options.no_banksel, "do not generate BANKSEL assembler directives"},
401 { 0, OPT_BANKSEL, NULL, "set banksel optimization level (default=0 no)"},
402 // { 0, "--pomit-config-words", &pic16_options.omit_configw, "omit the generation of configuration words"},
403 // { 0, "--pomit-ivt", &pic16_options.omit_ivt, "omit the generation of the Interrupt Vector Table"},
404 // { 0, "--pleave-reset-vector",&pic16_options.leave_reset, "when omitting IVT leave RESET vector"},
405 { 0, STACK_MODEL, NULL, "use stack model 'small' (default) or 'large'"},
407 { 0, "--debug-xtra", &pic16_debug_verbose, "show more debug info in assembly output"},
408 { 0, "--debug-ralloc", &pic16_ralloc_debug, "dump register allocator debug file *.d"},
409 { 0, "--pcode-verbose", &pic16_pcode_verbose, "dump pcode related info"},
411 { 0, REP_UDATA, NULL, "Place udata variables at another section: udata_acs, udata_ovr, udata_shr"},
413 { 0, ALT_ASM, NULL, "Use alternative assembler"},
414 { 0, ALT_LINK, NULL, "Use alternative linker"},
416 { 0, "--denable-peeps", &pic16_enable_peeps, "explicit enable of peepholes"},
417 { 0, IVT_LOC, NULL, "<nnnn> interrupt vector table location"},
418 { 0, "--calltree", &pic16_options.dumpcalltree, "dump call tree in .calltree file"},
419 { 0, MPLAB_COMPAT, &pic16_mplab_comp, "enable compatibility mode for MPLAB utilities (MPASM/MPLINK)"},
420 { 0, "--fstack", &pic16_fstack, "enable stack optimizations"},
421 { 0, NL_OPT, NULL, "new line, \"lf\" or \"crlf\""},
422 { 0, USE_CRT, NULL, "use <crt-o> run-time initialization module"},
423 { 0, "--no-crt", &pic16_options.no_crt, "do not link any default run-time initialization module"},
424 { 0, "--gstack", &pic16_options.gstack, "trace stack pointer push/pop to overflow"},
425 { 0, OPTIMIZE_GOTO, NULL, "try to use (conditional) BRA instead of GOTO"},
426 { 0, OPTIMIZE_CMP, NULL, "try to optimize some compares"},
427 { 0, OPTIMIZE_DF, NULL, "thoroughly analyze data flow (memory and time intensive!)"},
428 { 0, NULL, NULL, NULL}
432 #define ISOPT(str) !strncmp(argv[ *i ], str, strlen(str) )
434 extern char *getStringArg(const char *, char **, int *, int);
435 extern int getIntArg(const char *, char **, int *, int);
438 _pic16_parseOptions (int *pargc, char **argv, int *i)
443 /* TODO: allow port-specific command line options to specify
444 * segment names here.
447 /* check for arguments that have associated an integer variable */
448 while(pic16_optionsTable[j].pparameter) {
449 if(ISOPT( pic16_optionsTable[j].longOpt )) {
450 (*pic16_optionsTable[j].pparameter)++;
456 if(ISOPT(STACK_MODEL)) {
457 stkmodel = getStringArg(STACK_MODEL, argv, i, *pargc);
458 if(!STRCASECMP(stkmodel, "small"))pic16_options.stack_model = 0;
459 else if(!STRCASECMP(stkmodel, "large"))pic16_options.stack_model = 1;
461 fprintf(stderr, "Unknown stack model: %s", stkmodel);
467 if(ISOPT(OPT_BANKSEL)) {
468 pic16_options.opt_banksel = getIntArg(OPT_BANKSEL, argv, i, *pargc);
472 if(ISOPT(REP_UDATA)) {
473 pic16_sectioninfo.at_udata = Safe_strdup(getStringArg(REP_UDATA, argv, i, *pargc));
478 alt_asm = Safe_strdup(getStringArg(ALT_ASM, argv, i, *pargc));
482 if(ISOPT(ALT_LINK)) {
483 alt_link = Safe_strdup(getStringArg(ALT_LINK, argv, i, *pargc));
488 pic16_options.ivt_loc = getIntArg(IVT_LOC, argv, i, *pargc);
489 fprintf(stderr, "%s:%d setting interrupt vector addresses 0x%x\n", __FILE__, __LINE__, pic16_options.ivt_loc);
496 tmp = Safe_strdup( getStringArg(NL_OPT, argv, i, *pargc) );
497 if(!STRCASECMP(tmp, "lf"))pic16_nl = 0;
498 else if(!STRCASECMP(tmp, "crlf"))pic16_nl = 1;
500 fprintf(stderr, "invalid termination character id\n");
507 pic16_options.no_crt = 0;
508 pic16_options.crt_name = Safe_strdup( getStringArg(USE_CRT, argv, i, *pargc) );
514 if(ISOPT(OFMSG_LRSUPPORT)) {
515 pic16_options.opt_flags |= OF_LR_SUPPORT;
520 if (ISOPT(OPTIMIZE_GOTO)) {
521 pic16_options.opt_flags |= OF_OPTIMIZE_GOTO;
525 if(ISOPT(OPTIMIZE_CMP)) {
526 pic16_options.opt_flags |= OF_OPTIMIZE_CMP;
530 if (ISOPT(OPTIMIZE_DF)) {
531 pic16_options.opt_flags |= OF_OPTIMIZE_DF;
539 extern set *userIncDirsSet;
541 static void _pic16_initPaths(void)
543 char pic16incDir[512];
544 char pic16libDir[512];
545 set *pic16incDirsSet=NULL;
546 set *pic16libDirsSet=NULL;
549 setMainValue("mcu", pic16->name[2] );
550 addSet(&preArgvSet, Safe_strdup("-D{mcu}"));
552 setMainValue("mcu1", pic16->name[1] );
553 addSet(&preArgvSet, Safe_strdup("-D__{mcu1}"));
555 sprintf(pic16incDir, "%s%cpic16", INCLUDE_DIR_SUFFIX, DIR_SEPARATOR_CHAR);
556 sprintf(pic16libDir, "%s%cpic16", LIB_DIR_SUFFIX, DIR_SEPARATOR_CHAR);
559 if(!options.nostdinc) {
560 /* setup pic16 include directory */
561 pic16incDirsSet = appendStrSet(dataDirsSet, NULL, pic16incDir);
562 includeDirsSet = pic16incDirsSet;
563 // mergeSets(&includeDirsSet, pic16incDirsSet);
565 /* pic16 port should not search to the SDCC standard include directories,
566 * so add here the deleted include dirs that user has issued in command line */
567 mergeSets(&pic16incDirsSet, userIncDirsSet);
569 if(!options.nostdlib) {
570 /* setup pic16 library directory */
571 pic16libDirsSet = appendStrSet(dataDirsSet, NULL, pic16libDir);
572 libDirsSet = pic16libDirsSet;
573 // mergeSets(&libDirsSet, pic16libDirsSet);
576 if(!pic16_options.nodefaultlibs) {
577 /* now add the library for the device */
578 sprintf(devlib, "%s.lib", pic16->name[2]);
579 addSet(&libFilesSet, Safe_strdup(devlib));
581 /* add the internal SDCC library */
582 addSet(&libFilesSet, Safe_strdup( "libsdcc.lib" ));
586 extern set *linkOptionsSet;
587 char *msprintf(hTab *pvals, const char *pformat, ...);
588 int my_system(const char *cmd);
590 /* custom function to link objects */
591 static void _pic16_linkEdit(void)
593 hTab *linkValues=NULL;
601 * link command format:
602 * {linker} {incdirs} {lflags} -o {outfile} {spec_ofiles} {ofiles} {libs}
606 sprintf(lfrm, "{linker} {incdirs} {lflags} -o {outfile} {user_ofile} {spec_ofiles} {ofiles} {libs}");
608 shash_add(&linkValues, "linker", "gplink");
610 mergeSets(&tSet, libDirsSet);
611 mergeSets(&tSet, libPathsSet);
613 shash_add(&linkValues, "incdirs", joinStrSet( appendStrSet(tSet, "-I\"", "\"")));
614 shash_add(&linkValues, "lflags", joinStrSet(linkOptionsSet));
616 shash_add(&linkValues, "outfile", dstFileName);
618 if(fullSrcFileName) {
619 sprintf(temp, "%s.o", dstFileName);
620 // addSetHead(&relFilesSet, Safe_strdup(temp));
621 shash_add(&linkValues, "user_ofile", temp);
624 if(!pic16_options.no_crt)
625 shash_add(&linkValues, "spec_ofiles", pic16_options.crt_name);
627 shash_add(&linkValues, "ofiles", joinStrSet(relFilesSet));
629 if(!libflags.ignore) {
630 if(libflags.want_libc)
631 addSet(&libFilesSet, Safe_strdup("libc18f.lib"));
633 if(libflags.want_libm)
634 addSet(&libFilesSet, Safe_strdup("libm18f.lib"));
636 if(libflags.want_libio) {
637 sprintf(temp, "libio%s.lib", pic16->name[1]); /* build libio18f452.lib name */
638 addSet(&libFilesSet, Safe_strdup(temp));
641 if(libflags.want_libdebug)
642 addSet(&libFilesSet, Safe_strdup("libdebug.lib"));
645 shash_add(&linkValues, "libs", joinStrSet(libFilesSet));
647 lcmd = msprintf(linkValues, lfrm);
649 ret = my_system( lcmd );
658 /* forward declarations */
659 extern const char *pic16_linkCmd[];
660 extern const char *pic16_asmCmd[];
661 extern set *asmOptionsSet;
664 _pic16_finaliseOptions (void)
666 port->mem.default_local_map = data;
667 port->mem.default_globl_map = data;
669 /* peepholes are disabled for the time being */
672 /* explicit enable peepholes for testing */
673 if(pic16_enable_peeps)
676 options.all_callee_saves = 1; // always callee saves
679 options.float_rent = 1;
680 options.intlong_rent = 1;
684 if(alt_asm && strlen(alt_asm))
685 pic16_asmCmd[0] = alt_asm;
687 if(alt_link && strlen(alt_link))
688 pic16_linkCmd[0] = alt_link;
690 if(!pic16_options.no_crt) {
691 pic16_options.omit_ivt = 1;
692 pic16_options.leave_reset = 0;
695 if(options.model == MODEL_SMALL)
696 addSet(&asmOptionsSet, Safe_strdup("-DSDCC_MODEL_SMALL"));
698 if(options.model == MODEL_LARGE)
699 addSet(&asmOptionsSet, Safe_strdup("-DSDCC_MODEL_LARGE"));
704 sprintf(buf, "-D%s -D__%s", pic16->name[2], pic16->name[1]);
705 *(strrchr(buf, 'f')) = 'F';
706 addSet(&asmOptionsSet, Safe_strdup( buf ));
709 if(STACK_MODEL_LARGE) {
710 addSet(&preArgvSet, Safe_strdup("-DSTACK_MODEL_LARGE"));
711 addSet(&asmOptionsSet, Safe_strdup("-DSTACK_MODEL_LARGE"));
713 addSet(&preArgvSet, Safe_strdup("-DSTACK_MODEL_SMALL"));
714 addSet(&asmOptionsSet, Safe_strdup("-DSTACK_MODEL_SMALL"));
720 if (options.model == MODEL_LARGE)
722 port->mem.default_local_map = xdata;
723 port->mem.default_globl_map = xdata;
727 port->mem.default_local_map = data;
728 port->mem.default_globl_map = data;
731 if (options.stack10bit)
733 if (options.model != MODEL_FLAT24)
736 "*** warning: 10 bit stack mode is only supported in flat24 model.\n");
737 fprintf (stderr, "\t10 bit stack mode disabled.\n");
738 options.stack10bit = 0;
742 /* Fixup the memory map for the stack; it is now in
743 * far space and requires a FPOINTER to access it.
746 istack->ptrType = FPOINTER;
753 _pic16_setDefaultOptions (void)
755 options.stackAuto = 0; /* implicit declaration */
756 /* port is not capable yet to allocate separate registers
757 * dedicated for passing certain parameters */
759 /* initialize to defaults section locations, names and addresses */
760 pic16_sectioninfo.at_udata = "udata";
762 /* set pic16 port options to defaults */
763 pic16_options.no_banksel = 0;
764 pic16_options.opt_banksel = 0;
765 pic16_options.omit_configw = 0;
766 pic16_options.omit_ivt = 0;
767 pic16_options.leave_reset = 0;
768 pic16_options.stack_model = 0; /* 0 for 'small', 1 for 'large' */
769 pic16_options.ivt_loc = 0x000000;
770 pic16_options.nodefaultlibs = 0;
771 pic16_options.dumpcalltree = 0;
772 pic16_options.crt_name = "crt0i.o"; /* the default crt to link */
773 pic16_options.no_crt = 0; /* use crt by default */
774 pic16_options.ip_stack = 1; /* set to 1 to enable ipop/ipush for stack */
775 pic16_options.gstack = 0;
776 pic16_options.debgen = 0;
780 _pic16_getRegName (struct regs *reg)
789 static char *_pic16_mangleFunctionName(char *sz)
791 // fprintf(stderr, "mangled function name: %s\n", sz);
799 _pic16_genAssemblerPreamble (FILE * of)
801 char *name = pic16_processor_base_name();
805 fprintf(stderr,"WARNING: No Pic has been selected, defaulting to %s\n",name);
808 fprintf (of, "\tlist\tp=%s\n",&name[1]);
810 if(!pic16_options.omit_configw) {
811 pic16_emitConfigRegs(of);
813 pic16_emitIDRegs(of);
816 fprintf (of, "\tradix dec\n");
819 /* Generate interrupt vector table. */
821 _pic16_genIVT (FILE * of, symbol ** interrupts, int maxInterrupts)
824 /* PIC18F family has only two interrupts, the high and the low
825 * priority interrupts, which reside at 0x0008 and 0x0018 respectively - VR */
827 if((!pic16_options.omit_ivt) || (pic16_options.omit_ivt && pic16_options.leave_reset)) {
828 fprintf(of, "; RESET vector\n");
829 fprintf(of, "\tgoto\t__sdcc_gsinit_startup\n");
832 if(!pic16_options.omit_ivt) {
833 fprintf(of, "\tres 4\n");
836 fprintf(of, "; High priority interrupt vector 0x0008\n");
838 fprintf(of, "\tgoto\t%s\n", interrupts[1]->rname);
839 fprintf(of, "\tres\t12\n");
841 fprintf(of, "\tretfie\n");
842 fprintf(of, "\tres\t14\n");
845 fprintf(of, "; Low priority interrupt vector 0x0018\n");
847 fprintf(of, "\tgoto\t%s\n", interrupts[2]->rname);
849 fprintf(of, "\tretfie\n");
856 /* return True if the port can handle the type,
857 * False to convert it to function call */
858 static bool _hasNativeMulFor (iCode *ic, sym_link *left, sym_link *right)
860 // fprintf(stderr,"checking for native mult for %c (size: %d)\n", ic->op, getSize(OP_SYMBOL(IC_RESULT(ic))->type));
863 /* multiplication is fixed */
864 /* support mul for char/int/long */
866 && (getSize(OP_SYMBOL(IC_LEFT(ic))->type ) < 2))return TRUE;
870 /* support div for char/int/long */
871 if((getSize(OP_SYMBOL(IC_LEFT(ic))->type ) < 0)
872 && (ic->op == '/'))return TRUE;
880 /* Do CSE estimation */
881 static bool cseCostEstimation (iCode *ic, iCode *pdic)
883 // operand *result = IC_RESULT(ic);
884 // sym_link *result_type = operandType(result);
887 /* VR -- this is an adhoc. Put here after conversation
888 * with Erik Epetrich */
892 || ic->op == EQ_OP) {
894 fprintf(stderr, "%d %s\n", __LINE__, __FUNCTION__);
899 /* if it is a pointer then return ok for now */
900 if (IC_RESULT(ic) && IS_PTR(result_type)) return 1;
902 /* if bitwise | add & subtract then no since mcs51 is pretty good at it
903 so we will cse only if they are local (i.e. both ic & pdic belong to
904 the same basic block */
905 if (IS_BITWISE_OP(ic) || ic->op == '+' || ic->op == '-') {
906 /* then if they are the same Basic block then ok */
907 if (ic->eBBlockNum == pdic->eBBlockNum) return 1;
912 /* for others it is cheaper to do the cse */
918 /* Indicate which extended bit operations this port supports */
920 hasExtBitOp (int op, int size)
924 /* || op == GETHBIT */ /* GETHBIT doesn't look complete for PIC */
931 /* Indicate the expense of an access to an output storage class */
933 oclsExpense (struct memmap *oclass)
935 /* The IN_FARSPACE test is compatible with historical behaviour, */
936 /* but I don't think it is applicable to PIC. If so, please feel */
937 /* free to remove this test -- EEP */
938 if (IN_FARSPACE(oclass))
944 /** $1 is the input object file (PIC16 specific) // >>always the basename<<.
945 $2 is always the output file.
946 $3 -L path and -l libraries
947 $l is the list of extra options that should be there somewhere...
948 MUST be terminated with a NULL.
950 const char *pic16_linkCmd[] =
952 "gplink", "$l", "-o \"$2\"", "\"$1\"","$3", NULL
957 /** $1 is always the basename.
958 $2 is always the output file.
959 $3 varies (nothing currently)
960 $l is the list of extra options that should be there somewhere...
961 MUST be terminated with a NULL.
963 const char *pic16_asmCmd[] =
965 "gpasm", "$l", "$3", "-c", "\"$1.asm\"", "-o \"$2\"", NULL
974 "MCU PIC16", /* Target name */
975 "p18f452", /* Processor */
978 TRUE, /* Emit glue around main */
979 MODEL_SMALL | MODEL_LARGE | MODEL_FLAT24,
983 pic16_asmCmd, /* assembler command and arguments */
984 NULL, /* alternate macro based form */
985 "-g", /* arguments for debug mode */
986 NULL, /* arguments for normal mode */
987 0, /* print externs as global */
988 ".asm", /* assembler file extension */
989 NULL /* no do_assemble function */
992 NULL, // pic16_linkCmd, /* linker command and arguments */
993 NULL, /* alternate macro based form */
994 _pic16_linkEdit, //NULL, /* no do_link function */
995 ".o", /* extension for object files */
996 0 /* no need for linker file */
1008 3, /* fptr, far pointers (see Microchip) */
1015 "XSEG (XDATA)", // xstack
1016 "STACK (DATA)", // istack
1017 "CSEG (CODE)", // code
1018 "DSEG (DATA)", // data
1019 "ISEG (DATA)", // idata
1020 "PSEG (DATA)", // pdata
1021 "XSEG (XDATA)", // xdata
1022 "BSEG (BIT)", // bit
1023 "RSEG (DATA)", // reg
1024 "GSINIT (CODE)", // static
1025 "OSEG (OVR,DATA)", // overlay
1026 "GSFINAL (CODE)", // post static
1027 "HOME (CODE)", // home
1030 NULL, // default location for auto vars
1031 NULL, // default location for global vars
1032 1 // code is read only 1=yes
1035 NULL, /* genExtraAreaDeclaration */
1036 NULL /* genExatrAreaLinkOptions */
1039 /* stack related information */
1040 -1, /* -1 stack grows downwards, +1 upwards */
1041 1, /* extra overhead when calling between banks */
1042 4, /* extra overhead when the function is an ISR */
1043 1, /* extra overhead for a function call */
1044 1, /* re-entrant space */
1045 0 /* 'banked' call overhead, mild overlap with bank_overhead */
1047 /* pic16 has an 8 bit mul */
1052 pic16_emitDebuggerSymbol
1055 255/3, /* maxCount */
1056 3, /* sizeofElement */
1057 /* The rest of these costs are bogus. They approximate */
1058 /* the behavior of src/SDCCicode.c 1.207 and earlier. */
1059 {4,4,4}, /* sizeofMatchJump[] */
1060 {0,0,0}, /* sizeofRangeCompare[] */
1061 0, /* sizeofSubtract */
1062 3, /* sizeofDispatch */
1066 _pic16_parseOptions,
1069 _pic16_finaliseOptions,
1070 _pic16_setDefaultOptions,
1071 pic16_assignRegisters,
1074 _pic16_genAssemblerPreamble,
1075 NULL, /* no genAssemblerEnd */
1077 NULL, // _pic16_genXINIT
1078 NULL, /* genInitStartup */
1079 _pic16_reset_regparm,
1081 _process_pragma, /* process a pragma */
1082 _pic16_mangleFunctionName, /* mangles function name */
1084 hasExtBitOp, /* hasExtBitOp */
1085 oclsExpense, /* oclsExpense */
1087 TRUE, /* little endian */
1090 1, /* transform <= to ! > */
1091 1, /* transform >= to ! < */
1092 1, /* transform != to !(a == b) */
1094 FALSE, /* No array initializer support. */
1095 0, //cseCostEstimation, /* !!!no CSE cost estimation yet */
1096 NULL, /* no builtin functions */
1097 GPOINTER, /* treat unqualified pointers as "generic" pointers */
1098 1, /* reset labelKey to 1 */
1099 1, /* globals & local static allowed */