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 -------------------------------------------------------------------------*/
36 static char _defaultRules[] =
41 /* list of key words used by pic16 */
42 static char *_pic16_keywords[] =
80 pic16_sectioninfo_t pic16_sectioninfo;
85 extern char *pic16_processor_base_name(void);
87 void pic16_pCodeInitRegisters(void);
89 void pic16_assignRegisters (ebbIndex *);
91 static int regParmFlg = 0; /* determine if we can register a parameter */
93 pic16_options_t pic16_options;
95 extern set *includeDirsSet;
96 extern set *dataDirsSet;
97 extern set *libFilesSet;
99 /* Also defined in gen.h, but the #include is commented out */
100 /* for an unknowned reason. - EEP */
101 void pic16_emitDebuggerSymbol (char *);
103 extern void pic16_emitConfigRegs(FILE *of);
104 extern void pic16_emitIDRegs(FILE *of);
111 asm_addTree (&asm_asxxxx_mapping);
112 pic16_pCodeInitRegisters();
117 _pic16_reset_regparm (void)
123 _pic16_regparm (sym_link * l, bool reentrant)
125 /* force all parameters via SEND/RECEIVE */
126 if(0 /*pic16_options.ip_stack*/) {
127 /* for this processor it is simple
128 * can pass only the first parameter in a register */
129 if(regParmFlg)return 0;
131 return 1; //regParmFlg;
133 /* otherwise pass all arguments in registers via SEND/RECEIVE */
140 int initsfpnt=0; /* set to 1 if source provides a pragma for stack
141 * so glue() later emits code to initialize stack/frame pointers */
144 set *sectNames=NULL; /* list of section listed in pragma directives */
145 set *sectSyms=NULL; /* list of symbols set in a specific section */
146 set *wparamList=NULL;
149 /* This is an experimental code for #pragma inline
150 and is temporarily disabled for 2.5.0 release */
151 set *asmInlineMap=NULL;
156 unsigned want_libc: 1;
157 unsigned want_libm: 1;
158 unsigned want_libio: 1;
159 unsigned want_libdebug: 1;
160 } libflags = { 0, 0, 0, 0, 0 };
172 do_pragma(int id, const char *name, const char *cp)
174 struct pragma_token_s token;
178 init_pragma_token(&token);
182 /* #pragma maxram [maxram] */
187 cp = get_pragma_token(cp, &token);
188 if (TOKEN_INT == token.type)
189 max_ram = token.val.int_val;
196 cp = get_pragma_token(cp, &token);
197 if (TOKEN_EOL != token.type)
203 pic16_setMaxRAM(max_ram);
207 /* #pragma stack [stack-position] [stack-len] */
210 unsigned int stackPos, stackLen;
214 cp = get_pragma_token(cp, &token);
215 if (TOKEN_INT != token.type)
220 stackPos = token.val.int_val;
222 cp = get_pragma_token(cp, &token);
223 if (TOKEN_INT != token.type)
228 stackLen = token.val.int_val;
230 cp = get_pragma_token(cp, &token);
231 if (TOKEN_EOL != token.type)
239 fprintf(stderr, "%s:%d: warning: setting stack to default size %d (0x%04x)\n",
240 filename, lineno, stackLen, stackLen);
243 /* check sanity of stack */
244 if ((stackPos >> 8) != ((stackPos + stackLen - 1) >> 8)) {
245 fprintf (stderr, "%s:%u: warning: stack [0x%03X,0x%03X] crosses memory bank boundaries (not fully tested)\n",
246 filename, lineno, stackPos, stackPos + stackLen - 1);
250 if (stackPos < pic16->acsSplitOfs) {
251 fprintf (stderr, "%s:%u: warning: stack [0x%03X, 0x%03X] intersects with the access bank [0x000,0x%03x] -- this is highly discouraged!\n",
252 filename, lineno, stackPos, stackPos + stackLen - 1, pic16->acsSplitOfs);
255 if (stackPos+stackLen > 0xF00 + pic16->acsSplitOfs) {
256 fprintf (stderr, "%s:%u: warning: stack [0x%03X,0x%03X] intersects with special function registers [0x%03X,0xFFF]-- this is highly discouraged!\n",
257 filename, lineno, stackPos, stackPos + stackLen - 1, 0xF00 + pic16->acsSplitOfs);
260 if (stackPos+stackLen > pic16->RAMsize) {
261 fprintf (stderr, "%s:%u: error: stack [0x%03X,0x%03X] is placed outside available memory [0x000,0x%03X]!\n",
262 filename, lineno, stackPos, stackPos + stackLen - 1, pic16->RAMsize-1);
268 reg = newReg(REG_SFR, PO_SFR_REGISTER, stackPos, "_stack", stackLen-1, 0, NULL);
269 addSet(&pic16_fix_udata, reg);
271 reg = newReg(REG_SFR, PO_SFR_REGISTER, stackPos + stackLen-1, "_stack_end", 1, 0, NULL);
272 addSet(&pic16_fix_udata, reg);
274 sym = newSymbol("stack", 0);
275 sprintf(sym->rname, "_%s", sym->name);
276 addSet(&publics, sym);
278 sym = newSymbol("stack_end", 0);
279 sprintf(sym->rname, "_%s", sym->name);
280 addSet(&publics, sym);
282 initsfpnt = 1; // force glue() to initialize stack/frame pointers */
286 /* #pragma code [symbol] [location] */
291 cp = get_pragma_token(cp, &token);
292 if (TOKEN_STR != token.type)
295 absS = Safe_calloc(1, sizeof(absSym));
296 sprintf(absS->name, "_%s", get_pragma_string(&token));
298 cp = get_pragma_token(cp, &token);
299 if (TOKEN_INT != token.type)
302 //fprintf (stderr, "%s:%d: #pragma code [symbol] [location] -- symbol or location missing\n", filename, lineno);
306 absS->address = token.val.int_val;
308 cp = get_pragma_token(cp, &token);
309 if (TOKEN_EOL != token.type)
315 if ((absS->address % 2) != 0) {
317 fprintf(stderr, "%s:%d: warning: code memory locations should be word aligned, will locate to 0x%06x instead\n",
318 filename, lineno, absS->address);
321 addSet(&absSymSet, absS);
322 // fprintf(stderr, "%s:%d symbol %s will be placed in location 0x%06x in code memory\n",
323 // __FILE__, __LINE__, symname, absS->address);
327 /* #pragma udata [section-name] [symbol] */
337 cp = get_pragma_token(cp, &token);
338 if (TOKEN_STR == token.type)
339 sectname = Safe_strdup(get_pragma_string(&token));
346 cp = get_pragma_token(cp, &token);
347 if (TOKEN_STR == token.type)
348 symname = get_pragma_string(&token);
351 //fprintf (stderr, "%s:%d: #pragma udata [section-name] [symbol] -- section-name or symbol missing!\n", filename, lineno);
358 ssym = Safe_calloc(1, sizeof(sectSym));
359 ssym->name = Safe_calloc(1, strlen(symname) + 2);
360 sprintf(ssym->name, "%s%s", port->fun_prefix, symname);
363 addSet(§Syms, ssym);
365 nsym = newSymbol((char *)symname, 0);
366 strcpy(nsym->rname, ssym->name);
369 checkAddSym(&publics, nsym);
373 for (snam = setFirstItem(sectNames);snam;snam=setNextItem(sectNames))
375 if (!strcmp(sectname, snam->name))
384 snam = Safe_calloc(1, sizeof(sectName));
385 snam->name = Safe_strdup(sectname);
386 snam->regsSet = NULL;
388 addSet(§Names, snam);
391 ssym->section = snam;
394 fprintf(stderr, "%s:%d placing symbol %s at section %s (%p)\n", __FILE__, __LINE__,
395 ssym->name, snam->name, snam);
398 cp = get_pragma_token(cp, &token);
399 if (TOKEN_STR == token.type)
400 symname = get_pragma_string(&token);
401 else if (TOKEN_EOL == token.type)
414 /* #pragma library library_module */
419 cp = get_pragma_token(cp, &token);
420 if (TOKEN_EOL != token.type)
422 lmodule = get_pragma_string(&token);
425 * c link the C library
426 * math link the math library
427 * io link the IO library
428 * debug link the debug libary
429 * anything else, will link as-is */
431 if(!strcmp(lmodule, "c"))
432 libflags.want_libc = 1;
433 else if(!strcmp(lmodule, "math"))
434 libflags.want_libm = 1;
435 else if(!strcmp(lmodule, "io"))
436 libflags.want_libio = 1;
437 else if(!strcmp(lmodule, "debug"))
438 libflags.want_libdebug = 1;
439 else if(!strcmp(lmodule, "ignore"))
445 fprintf(stderr, "link library %s\n", lmodule);
446 addSetHead(&libFilesSet, (char *)lmodule);
456 cp = get_pragma_token(cp, &token);
457 if (TOKEN_EOL != token.type)
466 /* This is an experimental code for #pragma inline
467 and is temporarily disabled for 2.5.0 release */
470 char *tmp = strtok((char *)NULL, WHITECOMMA);
473 addSet(&asmInlineMap, Safe_strdup( tmp ));
474 tmp = strtok((char *)NULL, WHITECOMMA);
480 for(s = setFirstItem(asmInlineMap); s ; s = setNextItem(asmInlineMap)) {
481 debugf("inline asm: `%s'\n", s);
493 get_pragma_token(cp, &token);
496 werror(W_BAD_PRAGMA_ARGUMENTS, name);
498 free_pragma_token(&token);
502 static struct pragma_s pragma_tbl[] = {
503 { "maxram", P_MAXRAM, 0, do_pragma },
504 { "stack", P_STACK, 0, do_pragma },
505 { "code", P_CODE, 0, do_pragma },
506 { "udata", P_UDATA, 0, do_pragma },
507 { "library", P_LIBRARY, 0, do_pragma },
508 /*{ "inline", P_INLINE, 0, do_pragma }, */
509 { NULL, 0, 0, NULL },
513 _process_pragma(const char *s)
515 return process_pragma_tbl(pragma_tbl, s);
518 #define REP_UDATA "--preplace-udata-with="
520 #define STACK_MODEL "--pstack-model="
521 #define OPT_BANKSEL "--obanksel="
523 #define ALT_ASM "--asm="
524 #define ALT_LINK "--link="
526 #define IVT_LOC "--ivt-loc="
527 #define NO_DEFLIBS "--nodefaultlibs"
528 #define MPLAB_COMPAT "--mplab-comp"
530 #define NL_OPT "--nl="
531 #define USE_CRT "--use-crt="
533 #define OFMSG_LRSUPPORT "--flr-support"
535 #define OPTIMIZE_GOTO "--optimize-goto"
536 #define OPTIMIZE_CMP "--optimize-cmp"
537 #define OPTIMIZE_DF "--optimize-df"
542 int pic16_mplab_comp=0;
543 extern int pic16_debug_verbose;
544 extern int pic16_ralloc_debug;
545 extern int pic16_pcode_verbose;
548 int pic16_enable_peeps=0;
549 int pic16_nl=0; /* 0 for LF, 1 for CRLF */
551 OPTION pic16_optionsTable[]= {
552 { 0, NO_DEFLIBS, &pic16_options.nodefaultlibs, "do not link default libraries when linking"},
553 { 0, "--pno-banksel", &pic16_options.no_banksel, "do not generate BANKSEL assembler directives"},
554 { 0, OPT_BANKSEL, NULL, "set banksel optimization level (default=0 no)"},
555 // { 0, "--pomit-config-words", &pic16_options.omit_configw, "omit the generation of configuration words"},
556 // { 0, "--pomit-ivt", &pic16_options.omit_ivt, "omit the generation of the Interrupt Vector Table"},
557 // { 0, "--pleave-reset-vector",&pic16_options.leave_reset, "when omitting IVT leave RESET vector"},
558 { 0, STACK_MODEL, NULL, "use stack model 'small' (default) or 'large'"},
560 { 0, "--debug-xtra", &pic16_debug_verbose, "show more debug info in assembly output"},
561 { 0, "--debug-ralloc", &pic16_ralloc_debug, "dump register allocator debug file *.d"},
562 { 0, "--pcode-verbose", &pic16_pcode_verbose, "dump pcode related info"},
564 { 0, REP_UDATA, NULL, "Place udata variables at another section: udata_acs, udata_ovr, udata_shr"},
566 { 0, ALT_ASM, NULL, "Use alternative assembler"},
567 { 0, ALT_LINK, NULL, "Use alternative linker"},
569 { 0, "--denable-peeps", &pic16_enable_peeps, "explicit enable of peepholes"},
570 { 0, IVT_LOC, NULL, "<nnnn> interrupt vector table location"},
571 { 0, "--calltree", &pic16_options.dumpcalltree, "dump call tree in .calltree file"},
572 { 0, MPLAB_COMPAT, &pic16_mplab_comp, "enable compatibility mode for MPLAB utilities (MPASM/MPLINK)"},
573 { 0, "--fstack", &pic16_fstack, "enable stack optimizations"},
574 { 0, NL_OPT, NULL, "new line, \"lf\" or \"crlf\""},
575 { 0, USE_CRT, NULL, "use <crt-o> run-time initialization module"},
576 { 0, "--no-crt", &pic16_options.no_crt, "do not link any default run-time initialization module"},
577 { 0, "--gstack", &pic16_options.gstack, "trace stack pointer push/pop to overflow"},
578 { 0, OPTIMIZE_GOTO, NULL, "try to use (conditional) BRA instead of GOTO"},
579 { 0, OPTIMIZE_CMP, NULL, "try to optimize some compares"},
580 { 0, OPTIMIZE_DF, NULL, "thoroughly analyze data flow (memory and time intensive!)"},
581 { 0, "--num-func-alloc-regs", &pic16_options.CATregs, "dump number of temporary registers allocated for each function"},
583 { 'y', "--extended", &xinst, "enable Extended Instruction Set/Literal Offset Addressing mode"},
585 { 0, NULL, NULL, NULL}
589 #define ISOPT(str) !strncmp(argv[ *i ], str, strlen(str) )
591 extern char *getStringArg(const char *, char **, int *, int);
592 extern int getIntArg(const char *, char **, int *, int);
595 _pic16_parseOptions (int *pargc, char **argv, int *i)
600 /* TODO: allow port-specific command line options to specify
601 * segment names here.
604 /* check for arguments that have associated an integer variable */
605 while(pic16_optionsTable[j].pparameter) {
606 if(ISOPT( pic16_optionsTable[j].longOpt )) {
607 (*pic16_optionsTable[j].pparameter)++;
613 if(ISOPT(STACK_MODEL)) {
614 stkmodel = getStringArg(STACK_MODEL, argv, i, *pargc);
615 if(!STRCASECMP(stkmodel, "small"))pic16_options.stack_model = 0;
616 else if(!STRCASECMP(stkmodel, "large"))pic16_options.stack_model = 1;
618 fprintf(stderr, "Unknown stack model: %s", stkmodel);
624 if(ISOPT(OPT_BANKSEL)) {
625 pic16_options.opt_banksel = getIntArg(OPT_BANKSEL, argv, i, *pargc);
629 if(ISOPT(REP_UDATA)) {
630 pic16_sectioninfo.at_udata = Safe_strdup(getStringArg(REP_UDATA, argv, i, *pargc));
635 alt_asm = Safe_strdup(getStringArg(ALT_ASM, argv, i, *pargc));
639 if(ISOPT(ALT_LINK)) {
640 alt_link = Safe_strdup(getStringArg(ALT_LINK, argv, i, *pargc));
645 pic16_options.ivt_loc = getIntArg(IVT_LOC, argv, i, *pargc);
646 fprintf(stderr, "%s:%d setting interrupt vector addresses 0x%x\n", __FILE__, __LINE__, pic16_options.ivt_loc);
653 tmp = Safe_strdup( getStringArg(NL_OPT, argv, i, *pargc) );
654 if(!STRCASECMP(tmp, "lf"))pic16_nl = 0;
655 else if(!STRCASECMP(tmp, "crlf"))pic16_nl = 1;
657 fprintf(stderr, "invalid termination character id\n");
664 pic16_options.no_crt = 0;
665 pic16_options.crt_name = Safe_strdup( getStringArg(USE_CRT, argv, i, *pargc) );
671 if(ISOPT(OFMSG_LRSUPPORT)) {
672 pic16_options.opt_flags |= OF_LR_SUPPORT;
677 if (ISOPT(OPTIMIZE_GOTO)) {
678 pic16_options.opt_flags |= OF_OPTIMIZE_GOTO;
682 if(ISOPT(OPTIMIZE_CMP)) {
683 pic16_options.opt_flags |= OF_OPTIMIZE_CMP;
687 if (ISOPT(OPTIMIZE_DF)) {
688 pic16_options.opt_flags |= OF_OPTIMIZE_DF;
696 extern set *userIncDirsSet;
698 static void _pic16_initPaths(void)
700 char pic16incDir[512];
701 char pic16libDir[512];
702 set *pic16incDirsSet=NULL;
703 set *pic16libDirsSet=NULL;
706 setMainValue("mcu", pic16->name[2] );
707 addSet(&preArgvSet, Safe_strdup("-D{mcu}"));
709 setMainValue("mcu1", pic16->name[1] );
710 addSet(&preArgvSet, Safe_strdup("-D__{mcu1}"));
712 sprintf(pic16incDir, "%s%cpic16", INCLUDE_DIR_SUFFIX, DIR_SEPARATOR_CHAR);
713 sprintf(pic16libDir, "%s%cpic16", LIB_DIR_SUFFIX, DIR_SEPARATOR_CHAR);
716 if(!options.nostdinc) {
717 /* setup pic16 include directory */
718 pic16incDirsSet = appendStrSet(dataDirsSet, NULL, pic16incDir);
719 includeDirsSet = pic16incDirsSet;
720 // mergeSets(&includeDirsSet, pic16incDirsSet);
722 /* pic16 port should not search to the SDCC standard include directories,
723 * so add here the deleted include dirs that user has issued in command line */
724 mergeSets(&pic16incDirsSet, userIncDirsSet);
726 if(!options.nostdlib) {
727 /* setup pic16 library directory */
728 pic16libDirsSet = appendStrSet(dataDirsSet, NULL, pic16libDir);
729 libDirsSet = pic16libDirsSet;
730 // mergeSets(&libDirsSet, pic16libDirsSet);
733 if(!pic16_options.nodefaultlibs) {
734 /* now add the library for the device */
735 sprintf(devlib, "%s.lib", pic16->name[2]);
736 addSet(&libFilesSet, Safe_strdup(devlib));
738 /* add the internal SDCC library */
739 addSet(&libFilesSet, Safe_strdup( "libsdcc.lib" ));
743 extern set *linkOptionsSet;
744 char *msprintf(hTab *pvals, const char *pformat, ...);
745 int my_system(const char *cmd);
747 /* forward declarations */
748 extern const char *pic16_linkCmd[];
749 extern const char *pic16_asmCmd[];
750 extern set *asmOptionsSet;
752 /* custom function to link objects */
753 static void _pic16_linkEdit(void)
755 hTab *linkValues=NULL;
763 * link command format:
764 * {linker} {incdirs} {lflags} -o {outfile} {spec_ofiles} {ofiles} {libs}
767 sprintf(lfrm, "{linker} {incdirs} {lflags} -w -r -o {outfile} {user_ofile} {ofiles} {spec_ofiles} {libs}");
769 shash_add(&linkValues, "linker", pic16_linkCmd[0]);
771 mergeSets(&tSet, libDirsSet);
772 mergeSets(&tSet, libPathsSet);
774 shash_add(&linkValues, "incdirs", joinStrSet( appendStrSet(tSet, "-I\"", "\"")));
775 shash_add(&linkValues, "lflags", joinStrSet(linkOptionsSet));
777 shash_add(&linkValues, "outfile", fullDstFileName ? fullDstFileName : dstFileName);
779 if(fullSrcFileName) {
780 sprintf(temp, "%s.o", fullDstFileName ? fullDstFileName : dstFileName);
781 // addSetHead(&relFilesSet, Safe_strdup(temp));
782 shash_add(&linkValues, "user_ofile", temp);
785 if(!pic16_options.no_crt)
786 shash_add(&linkValues, "spec_ofiles", pic16_options.crt_name);
788 shash_add(&linkValues, "ofiles", joinStrSet(relFilesSet));
790 if(!libflags.ignore) {
791 if(libflags.want_libc)
792 addSet(&libFilesSet, Safe_strdup("libc18f.lib"));
794 if(libflags.want_libm)
795 addSet(&libFilesSet, Safe_strdup("libm18f.lib"));
797 if(libflags.want_libio) {
798 sprintf(temp, "libio%s.lib", pic16->name[1]); /* build libio18f452.lib name */
799 addSet(&libFilesSet, Safe_strdup(temp));
802 if(libflags.want_libdebug)
803 addSet(&libFilesSet, Safe_strdup("libdebug.lib"));
806 shash_add(&linkValues, "libs", joinStrSet(libFilesSet));
808 lcmd = msprintf(linkValues, lfrm);
810 ret = my_system( lcmd );
820 _pic16_finaliseOptions (void)
822 port->mem.default_local_map = data;
823 port->mem.default_globl_map = data;
825 /* peepholes are disabled for the time being */
828 /* explicit enable peepholes for testing */
829 if(pic16_enable_peeps)
832 options.all_callee_saves = 1; // always callee saves
835 options.float_rent = 1;
836 options.intlong_rent = 1;
840 if(alt_asm && strlen(alt_asm))
841 pic16_asmCmd[0] = alt_asm;
843 if(alt_link && strlen(alt_link))
844 pic16_linkCmd[0] = alt_link;
846 if(!pic16_options.no_crt) {
847 pic16_options.omit_ivt = 1;
848 pic16_options.leave_reset = 0;
851 if(options.model == MODEL_SMALL)
852 addSet(&asmOptionsSet, Safe_strdup("-DSDCC_MODEL_SMALL"));
854 if(options.model == MODEL_LARGE)
855 addSet(&asmOptionsSet, Safe_strdup("-DSDCC_MODEL_LARGE"));
860 sprintf(buf, "-D%s -D__%s", pic16->name[2], pic16->name[1]);
861 *(strrchr(buf, 'f')) = 'F';
862 addSet(&asmOptionsSet, Safe_strdup( buf ));
865 if(STACK_MODEL_LARGE) {
866 addSet(&preArgvSet, Safe_strdup("-DSTACK_MODEL_LARGE"));
867 addSet(&asmOptionsSet, Safe_strdup("-DSTACK_MODEL_LARGE"));
869 addSet(&preArgvSet, Safe_strdup("-DSTACK_MODEL_SMALL"));
870 addSet(&asmOptionsSet, Safe_strdup("-DSTACK_MODEL_SMALL"));
876 if (options.model == MODEL_LARGE)
878 port->mem.default_local_map = xdata;
879 port->mem.default_globl_map = xdata;
883 port->mem.default_local_map = data;
884 port->mem.default_globl_map = data;
887 if (options.stack10bit)
889 if (options.model != MODEL_FLAT24)
892 "*** warning: 10 bit stack mode is only supported in flat24 model.\n");
893 fprintf (stderr, "\t10 bit stack mode disabled.\n");
894 options.stack10bit = 0;
898 /* Fixup the memory map for the stack; it is now in
899 * far space and requires a FPOINTER to access it.
902 istack->ptrType = FPOINTER;
909 _pic16_setDefaultOptions (void)
911 options.stackAuto = 0; /* implicit declaration */
912 /* port is not capable yet to allocate separate registers
913 * dedicated for passing certain parameters */
915 /* initialize to defaults section locations, names and addresses */
916 pic16_sectioninfo.at_udata = "udata";
918 /* set pic16 port options to defaults */
919 pic16_options.no_banksel = 0;
920 pic16_options.opt_banksel = 0;
921 pic16_options.omit_configw = 0;
922 pic16_options.omit_ivt = 0;
923 pic16_options.leave_reset = 0;
924 pic16_options.stack_model = 0; /* 0 for 'small', 1 for 'large' */
925 pic16_options.ivt_loc = 0x000000;
926 pic16_options.nodefaultlibs = 0;
927 pic16_options.dumpcalltree = 0;
928 pic16_options.crt_name = "crt0i.o"; /* the default crt to link */
929 pic16_options.no_crt = 0; /* use crt by default */
930 pic16_options.ip_stack = 1; /* set to 1 to enable ipop/ipush for stack */
931 pic16_options.gstack = 0;
932 pic16_options.debgen = 0;
933 pic16_options.CATregs = 0;
937 _pic16_getRegName (struct regs *reg)
946 static char *_pic16_mangleFunctionName(char *sz)
948 // fprintf(stderr, "mangled function name: %s\n", sz);
956 _pic16_genAssemblerPreamble (FILE * of)
958 char *name = pic16_processor_base_name();
962 fprintf(stderr,"WARNING: No Pic has been selected, defaulting to %s\n",name);
965 fprintf (of, "\tlist\tp=%s\n",&name[1]);
966 if (pic16_mplab_comp) {
967 // provide ACCESS macro used during SFR accesses
968 fprintf (of, "\tinclude <p%s.inc>\n", &name[1]);
971 if(!pic16_options.omit_configw) {
972 pic16_emitConfigRegs(of);
974 pic16_emitIDRegs(of);
977 fprintf (of, "\tradix dec\n");
980 /* Generate interrupt vector table. */
982 _pic16_genIVT (FILE * of, symbol ** interrupts, int maxInterrupts)
985 /* PIC18F family has only two interrupts, the high and the low
986 * priority interrupts, which reside at 0x0008 and 0x0018 respectively - VR */
988 if((!pic16_options.omit_ivt) || (pic16_options.omit_ivt && pic16_options.leave_reset)) {
989 fprintf(of, "; RESET vector\n");
990 fprintf(of, "\tgoto\t__sdcc_gsinit_startup\n");
993 if(!pic16_options.omit_ivt) {
994 fprintf(of, "\tres 4\n");
997 fprintf(of, "; High priority interrupt vector 0x0008\n");
999 fprintf(of, "\tgoto\t%s\n", interrupts[1]->rname);
1000 fprintf(of, "\tres\t12\n");
1002 fprintf(of, "\tretfie\n");
1003 fprintf(of, "\tres\t14\n");
1006 fprintf(of, "; Low priority interrupt vector 0x0018\n");
1008 fprintf(of, "\tgoto\t%s\n", interrupts[2]->rname);
1010 fprintf(of, "\tretfie\n");
1017 /* return True if the port can handle the type,
1018 * False to convert it to function call */
1019 static bool _hasNativeMulFor (iCode *ic, sym_link *left, sym_link *right)
1021 //fprintf(stderr,"checking for native mult for %c (size: %d)\n", ic->op, getSize(OP_SYMBOL(IC_RESULT(ic))->type));
1022 int symL, symR, symRes, sizeL = 0, sizeR = 0, sizeRes = 0;
1024 /* left/right are symbols? */
1025 symL = IS_SYMOP(IC_LEFT(ic));
1026 symR = IS_SYMOP(IC_RIGHT(ic));
1027 symRes = IS_SYMOP(IC_RESULT(ic));
1029 /* --> then determine their sizes */
1030 sizeL = symL ? getSize(OP_SYM_TYPE(IC_LEFT(ic))) : 4;
1031 sizeR = symR ? getSize(OP_SYM_TYPE(IC_RIGHT(ic))) : 4;
1032 sizeRes = symRes ? getSize(OP_SYM_TYPE(IC_RESULT(ic))) : 4;
1034 /* Checks to enable native multiplication.
1035 * PICs do not offer native division at all...
1038 * ( i) if result is just one byte, use native MUL
1039 * (regardless of the operands)
1040 * ( ii) if left and right are unsigned 8-bit operands,
1042 * (iii) if left or right is a literal in the range of [-128..256)
1043 * and the other is an unsigned byte, use native MUL
1047 /* use native mult for `*: <?> x <?> --> {u8_t, s8_t}' */
1048 if (sizeRes == 1) { return TRUE; }
1050 /* use native mult for `u8_t x u8_t --> { u16_t, s16_t }' */
1051 if (sizeL == 1 && symL /*&& SPEC_USIGN(OP_SYM_TYPE(IC_LEFT(ic)))*/) {
1054 //printf( "%s: left too large (%u) / signed (%u)\n", __FUNCTION__, sizeL, symL && !SPEC_USIGN(OP_SYM_TYPE(IC_LEFT(ic))));
1057 if (sizeR == 1 && symR /*&& SPEC_USIGN(OP_SYM_TYPE(IC_RIGHT(ic)))*/) {
1060 //printf( "%s: right too large (%u) / signed (%u)\n", __FUNCTION__, sizeR, symR && !SPEC_USIGN(OP_SYM_TYPE(IC_RIGHT(ic))));
1064 /* also allow literals [-128..256) for left/right operands */
1065 if (IS_VALOP(IC_LEFT(ic)))
1067 long l = (long)floatFromVal( OP_VALUE( IC_LEFT(ic) ) );
1069 //printf( "%s: val(left) = %ld\n", __FUNCTION__, l );
1070 if (l >= -128 && l < 256)
1074 //printf( "%s: left value %ld outside [-128..256)\n", __FUNCTION__, l );
1077 if (IS_VALOP( IC_RIGHT(ic) ))
1079 long l = (long)floatFromVal( OP_VALUE( IC_RIGHT(ic) ) );
1081 //printf( "%s: val(right) = %ld\n", __FUNCTION__, l );
1082 if (l >= -128 && l < 256)
1086 //printf( "%s: right value %ld outside [-128..256)\n", __FUNCTION__, l );
1090 /* use native mult iff left and right are (unsigned) 8-bit operands */
1091 if (sizeL == 1 && sizeR == 1) { return TRUE; }
1094 if (ic->op == '/' || ic->op == '%')
1096 /* We must catch /: {u8_t,s8_t} x {u8_t,s8_t} --> {u8_t,s8_t},
1097 * because SDCC will call 'divuchar' even for u8_t / s8_t.
1098 * Example: 128 / -2 becomes 128 / 254 = 0 != -64... */
1099 if (sizeL == 1 && sizeR == 1) return TRUE;
1101 /* What about literals? */
1102 if (IS_VALOP( IC_LEFT(ic) ))
1104 long l = (long)floatFromVal( OP_VALUE( IC_LEFT(ic) ) );
1106 //printf( "%s: val(left) = %ld\n", __FUNCTION__, l );
1107 if (l >= -128 && l < 256)
1111 //printf( "%s: left value %ld outside [-128..256)\n", __FUNCTION__, l );
1114 if (IS_VALOP( IC_RIGHT(ic) ))
1116 long l = (long)floatFromVal( OP_VALUE( IC_RIGHT(ic) ) );
1118 //printf( "%s: val(right) = %ld\n", __FUNCTION__, l );
1119 if (l >= -128 && l < 256)
1123 //printf( "%s: right value %ld outside [-128..256)\n", __FUNCTION__, l );
1126 if (sizeL == 1 && sizeR == 1) { return TRUE; }
1134 /* Do CSE estimation */
1135 static bool cseCostEstimation (iCode *ic, iCode *pdic)
1137 // operand *result = IC_RESULT(ic);
1138 // sym_link *result_type = operandType(result);
1141 /* VR -- this is an adhoc. Put here after conversation
1142 * with Erik Epetrich */
1146 || ic->op == EQ_OP) {
1148 fprintf(stderr, "%d %s\n", __LINE__, __FUNCTION__);
1153 /* if it is a pointer then return ok for now */
1154 if (IC_RESULT(ic) && IS_PTR(result_type)) return 1;
1156 /* if bitwise | add & subtract then no since mcs51 is pretty good at it
1157 so we will cse only if they are local (i.e. both ic & pdic belong to
1158 the same basic block */
1159 if (IS_BITWISE_OP(ic) || ic->op == '+' || ic->op == '-') {
1160 /* then if they are the same Basic block then ok */
1161 if (ic->eBBlockNum == pdic->eBBlockNum) return 1;
1166 /* for others it is cheaper to do the cse */
1172 /* Indicate which extended bit operations this port supports */
1174 hasExtBitOp (int op, int size)
1178 /* || op == GETHBIT */ /* GETHBIT doesn't look complete for PIC */
1185 /* Indicate the expense of an access to an output storage class */
1187 oclsExpense (struct memmap *oclass)
1189 /* The IN_FARSPACE test is compatible with historical behaviour, */
1190 /* but I don't think it is applicable to PIC. If so, please feel */
1191 /* free to remove this test -- EEP */
1192 if (IN_FARSPACE(oclass))
1198 /** $1 is the input object file (PIC16 specific) // >>always the basename<<.
1199 $2 is always the output file.
1200 $3 -L path and -l libraries
1201 $l is the list of extra options that should be there somewhere...
1202 MUST be terminated with a NULL.
1204 const char *pic16_linkCmd[] =
1206 "gplink", "$l", "-w", "-r", "-o \"$2\"", "\"$1\"","$3", NULL
1211 /** $1 is always the basename.
1212 $2 is always the output file.
1213 $3 varies (nothing currently)
1214 $l is the list of extra options that should be there somewhere...
1215 MUST be terminated with a NULL.
1217 const char *pic16_asmCmd[] =
1219 "gpasm", "$l", "$3", "-c", "\"$1.asm\"", "-o \"$2\"", NULL
1228 "MCU PIC16", /* Target name */
1229 "p18f452", /* Processor */
1232 TRUE, /* Emit glue around main */
1233 MODEL_SMALL | MODEL_LARGE | MODEL_FLAT24,
1237 pic16_asmCmd, /* assembler command and arguments */
1238 NULL, /* alternate macro based form */
1239 "-g", /* arguments for debug mode */
1240 NULL, /* arguments for normal mode */
1241 0, /* print externs as global */
1242 ".asm", /* assembler file extension */
1243 NULL /* no do_assemble function */
1246 NULL, // pic16_linkCmd, /* linker command and arguments */
1247 NULL, /* alternate macro based form */
1248 _pic16_linkEdit, //NULL, /* no do_link function */
1249 ".o", /* extension for object files */
1250 0 /* no need for linker file */
1262 3, /* fptr, far pointers (see Microchip) */
1269 /* generic pointer tags */
1278 "XSEG (XDATA)", // xstack
1279 "STACK (DATA)", // istack
1280 "CSEG (CODE)", // code
1281 "DSEG (DATA)", // data
1282 "ISEG (DATA)", // idata
1283 "PSEG (DATA)", // pdata
1284 "XSEG (XDATA)", // xdata
1285 "BSEG (BIT)", // bit
1286 "RSEG (DATA)", // reg
1287 "GSINIT (CODE)", // static
1288 "OSEG (OVR,DATA)", // overlay
1289 "GSFINAL (CODE)", // post static
1290 "HOME (CODE)", // home
1293 "CONST (CODE)", // const_name - const data (code or not)
1294 "CABS (ABS,CODE)", // cabs_name - const absolute data (code or not)
1295 "XABS (ABS,XDATA)", // xabs_name - absolute xdata
1296 "IABS (ABS,DATA)", // iabs_name - absolute data
1297 NULL, // default location for auto vars
1298 NULL, // default location for global vars
1299 1 // code is read only 1=yes
1302 NULL, /* genExtraAreaDeclaration */
1303 NULL /* genExatrAreaLinkOptions */
1306 /* stack related information */
1307 -1, /* -1 stack grows downwards, +1 upwards */
1308 1, /* extra overhead when calling between banks */
1309 4, /* extra overhead when the function is an ISR */
1310 1, /* extra overhead for a function call */
1311 1, /* re-entrant space */
1312 0 /* 'banked' call overhead, mild overlap with bank_overhead */
1314 /* pic16 has an 8 bit mul */
1319 pic16_emitDebuggerSymbol
1322 255/3, /* maxCount */
1323 3, /* sizeofElement */
1324 /* The rest of these costs are bogus. They approximate */
1325 /* the behavior of src/SDCCicode.c 1.207 and earlier. */
1326 {4,4,4}, /* sizeofMatchJump[] */
1327 {0,0,0}, /* sizeofRangeCompare[] */
1328 0, /* sizeofSubtract */
1329 3, /* sizeofDispatch */
1333 _pic16_parseOptions,
1336 _pic16_finaliseOptions,
1337 _pic16_setDefaultOptions,
1338 pic16_assignRegisters,
1341 _pic16_genAssemblerPreamble,
1342 NULL, /* no genAssemblerEnd */
1344 NULL, // _pic16_genXINIT
1345 NULL, /* genInitStartup */
1346 _pic16_reset_regparm,
1348 _process_pragma, /* process a pragma */
1349 _pic16_mangleFunctionName, /* mangles function name */
1351 hasExtBitOp, /* hasExtBitOp */
1352 oclsExpense, /* oclsExpense */
1354 TRUE, /* little endian */
1357 1, /* transform <= to ! > */
1358 1, /* transform >= to ! < */
1359 1, /* transform != to !(a == b) */
1361 FALSE, /* No array initializer support. */
1362 0, //cseCostEstimation, /* !!!no CSE cost estimation yet */
1363 NULL, /* no builtin functions */
1364 GPOINTER, /* treat unqualified pointers as "generic" pointers */
1365 1, /* reset labelKey to 1 */
1366 1, /* globals & local static allowed */