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[] =
73 pic16_sectioninfo_t pic16_sectioninfo;
76 extern char *pic16_processor_base_name(void);
78 void pic16_pCodeInitRegisters(void);
80 void pic16_assignRegisters (eBBlock ** ebbs, int count);
82 static int regParmFlg = 0; /* determine if we can register a parameter */
84 pic16_options_t pic16_options;
86 extern set *includeDirsSet;
87 extern set *dataDirsSet;
88 extern set *libFilesSet;
90 /* Also defined in gen.h, but the #include is commented out */
91 /* for an unknowned reason. - EEP */
92 void pic16_emitDebuggerSymbol (char *);
94 extern regs* newReg(short type, short pc_type, int rIdx, char *name, int size, int alias, operand *refop);
95 extern void pic16_emitConfigRegs(FILE *of);
96 extern void pic16_emitIDRegs(FILE *of);
103 asm_addTree (&asm_asxxxx_mapping);
104 pic16_pCodeInitRegisters();
109 _pic16_reset_regparm (void)
115 _pic16_regparm (sym_link * l)
117 /* force all parameters via SEND/RECEIVE */
118 if(0 /*pic16_options.ip_stack*/) {
119 /* for this processor it is simple
120 * can pass only the first parameter in a register */
121 if(regParmFlg)return 0;
123 return 1; //regParmFlg;
125 /* otherwise pass all arguments in registers via SEND/RECEIVE */
132 int initsfpnt=0; /* set to 1 if source provides a pragma for stack
133 * so glue() later emits code to initialize stack/frame pointers */
136 set *sectNames=NULL; /* list of section listed in pragma directives */
137 set *sectSyms=NULL; /* list of symbols set in a specific section */
138 set *wparamList=NULL;
141 _process_pragma(const char *sz)
143 static const char *WHITE = " \t\n";
144 static const char *WHITECOMMA = " \t\n,";
146 char *ptr = strtok((char *)sz, WHITE);
148 /* #pragma maxram [maxram] */
149 if (startsWith (ptr, "maxram")) {
150 char *maxRAM = strtok((char *)NULL, WHITE);
152 if (maxRAM != (char *)NULL) {
156 maxRAMVal = constVal(maxRAM);
157 maxRAMaddress = (int)floatFromVal(maxRAMVal);
158 pic16_setMaxRAM(maxRAMaddress);
164 /* #pragma stack [stack-position] [stack-len] */
165 if(startsWith(ptr, "stack")) {
166 char *stackPosS = strtok((char *)NULL, WHITE);
167 char *stackLenS = strtok((char *)NULL, WHITE);
173 stackPosVal = constVal( stackPosS );
174 stackPos = (unsigned int)floatFromVal( stackPosVal );
178 stackLenVal = constVal( stackLenS );
179 stackLen = (unsigned int)floatFromVal( stackLenVal );
184 fprintf(stderr, "%s:%d: warning: setting stack to default size %d (0x%04x)\n",
185 filename, lineno-1, stackLen, stackLen);
187 // fprintf(stderr, "%s:%d setting stack to default size %d\n", __FILE__, __LINE__, stackLen);
190 // fprintf(stderr, "Initializing stack pointer at 0x%x len 0x%x\n", stackPos, stackLen);
192 reg=newReg(REG_SFR, PO_SFR_REGISTER, stackPos, "_stack", stackLen-1, 0, NULL);
193 addSet(&pic16_fix_udata, reg);
195 reg = newReg(REG_SFR, PO_SFR_REGISTER, stackPos + stackLen-1, "_stack_end", 1, 0, NULL);
196 addSet(&pic16_fix_udata, reg);
198 sym = newSymbol("stack", 0);
199 sprintf(sym->rname, "_%s", sym->name);
200 addSet(&publics, sym);
202 sym = newSymbol("stack_end", 0);
203 sprintf(sym->rname, "_%s", sym->name);
204 addSet(&publics, sym);
206 initsfpnt = 1; // force glue() to initialize stack/frame pointers */
211 /* #pragma code [symbol] [location] */
212 if(startsWith(ptr, "code")) {
213 char *symname = strtok((char *)NULL, WHITE);
214 char *location = strtok((char *)NULL, WHITE);
218 absS = Safe_calloc(1, sizeof(absSym));
219 sprintf(absS->name, "_%s", symname);
221 addr = constVal( location );
222 absS->address = (unsigned int)floatFromVal( addr );
224 if((absS->address % 2) != 0) {
226 fprintf(stderr, "%s:%d: warning: code memory locations should be word aligned, will locate to 0x%06x instead\n",
227 filename, lineno-1, absS->address);
230 addSet(&absSymSet, absS);
231 // fprintf(stderr, "%s:%d symbol %s will be placed in location 0x%06x in code memory\n",
232 // __FILE__, __LINE__, symname, absS->address);
237 /* #pragma udata [section-name] [symbol] */
238 if(startsWith(ptr, "udata")) {
239 char *sectname = strtok((char *)NULL, WHITE);
240 char *symname = strtok((char *)NULL, WHITE);
247 ssym = Safe_calloc(1, sizeof(sectSyms));
248 ssym->name = Safe_calloc(1, strlen(symname)+2);
249 sprintf(ssym->name, "_%s", symname);
252 addSet(§Syms, ssym);
254 nsym = newSymbol(symname, 0);
255 strcpy(nsym->rname, ssym->name);
256 checkAddSym(&publics, nsym);
259 for(snam=setFirstItem(sectNames);snam;snam=setNextItem(sectNames)) {
260 if(!strcmp(sectname, snam->name)){ found=1; break; }
264 snam = Safe_calloc(1, sizeof(sectNames));
265 snam->name = Safe_strdup( sectname );
266 snam->regsSet = NULL;
268 addSet(§Names, snam);
271 ssym->section = snam;
273 // fprintf(stderr, "%s:%d placing symbol %s at section %s (%p)\n", __FILE__, __LINE__,
274 // ssym->name, snam->name, snam);
276 symname = strtok((char *)NULL, WHITE);
282 if(startsWith(ptr, "wparam")) {
283 char *fname = strtok((char *)NULL, WHITECOMMA);
286 addSet(&wparamList, Safe_strdup(fname));
288 // debugf("passing with WREG to %s\n", fname);
289 fname = strtok((char *)NULL, WHITECOMMA);
298 #define REP_UDATA "--preplace-udata-with="
300 #define STACK_MODEL "--pstack-model="
301 #define OPT_BANKSEL "--obanksel="
303 #define ALT_ASM "--asm="
304 #define ALT_LINK "--link="
306 #define IVT_LOC "--ivt-loc"
307 #define NO_DEFLIBS "--nodefaultlibs"
308 #define MPLAB_COMPAT "--mplab-comp"
310 #define NL_OPT "--nl="
311 #define USE_CRT "--use-crt="
313 #define OFMSG_LRSUPPORT "--flr-support"
315 #define OPTIMIZE_GOTO "--optimize-goto"
320 int pic16_mplab_comp=0;
321 extern int pic16_debug_verbose;
322 extern int pic16_ralloc_debug;
323 extern int pic16_pcode_verbose;
326 int pic16_enable_peeps=0;
327 int pic16_nl=0; /* 0 for LF, 1 for CRLF */
329 OPTION pic16_optionsTable[]= {
330 { 0, NO_DEFLIBS, &pic16_options.nodefaultlibs, "do not link default libraries when linking"},
331 { 0, "--pno-banksel", &pic16_options.no_banksel, "do not generate BANKSEL assembler directives"},
332 { 0, OPT_BANKSEL, NULL, "set banksel optimization level (default=0 no)"},
333 { 0, "--pomit-config-words", &pic16_options.omit_configw, "omit the generation of configuration words"},
334 { 0, "--pomit-ivt", &pic16_options.omit_ivt, "omit the generation of the Interrupt Vector Table"},
335 { 0, "--pleave-reset-vector",&pic16_options.leave_reset, "when omitting IVT leave RESET vector"},
336 { 0, STACK_MODEL, NULL, "use stack model 'small' (default) or 'large'"},
338 { 0, "--debug-xtra", &pic16_debug_verbose, "show more debug info in assembly output"},
339 { 0, "--debug-ralloc", &pic16_ralloc_debug, "dump register allocator debug file *.d"},
340 { 0, "--pcode-verbose", &pic16_pcode_verbose, "dump pcode related info"},
342 { 0, REP_UDATA, NULL, "Place udata variables at another section: udata_acs, udata_ovr, udata_shr"},
344 { 0, ALT_ASM, NULL, "Use alternative assembler"},
345 { 0, ALT_LINK, NULL, "Use alternative linker"},
347 { 0, "--denable-peeps", &pic16_enable_peeps, "explicit enable of peepholes"},
348 { 0, IVT_LOC, NULL, "<nnnn> interrupt vector table location"},
349 { 0, "--calltree", &pic16_options.dumpcalltree, "dump call tree in .calltree file"},
350 { 0, MPLAB_COMPAT, &pic16_mplab_comp, "enable compatibility mode for MPLAB utilities (MPASM/MPLINK)"},
351 { 0, "--fstack", &pic16_fstack, "enable stack optimizations"},
352 { 0, NL_OPT, NULL, "new line, \"lf\" or \"crlf\""},
353 { 0, USE_CRT, NULL, "use <crt-o> run-time initialization module"},
354 { 0, "--no-crt", &pic16_options.no_crt, "do not link any default run-time initialization module"},
355 { 0, "--gstack", &pic16_options.gstack, "trace stack pointer push/pop to overflow"},
356 // { 0, OFMSG_LRSUPPORT, NULL, "use support functions for local register store/restore"},
357 { 0, OPTIMIZE_GOTO, NULL, "try to use (conditional) BRA instead of GOTO"},
358 { 0, NULL, NULL, NULL}
362 #define ISOPT(str) !strncmp(argv[ *i ], str, strlen(str) )
364 extern char *getStringArg(const char *, char **, int *, int);
365 extern int getIntArg(const char *, char **, int *, int);
368 _pic16_parseOptions (int *pargc, char **argv, int *i)
373 /* TODO: allow port-specific command line options to specify
374 * segment names here.
377 /* check for arguments that have associated an integer variable */
378 while(pic16_optionsTable[j].pparameter) {
379 if(ISOPT( pic16_optionsTable[j].longOpt )) {
380 (*pic16_optionsTable[j].pparameter)++;
386 if(ISOPT(STACK_MODEL)) {
387 stkmodel = getStringArg(STACK_MODEL, argv, i, *pargc);
388 if(!STRCASECMP(stkmodel, "small"))pic16_options.stack_model = 0;
389 else if(!STRCASECMP(stkmodel, "large"))pic16_options.stack_model = 1;
391 fprintf(stderr, "Unknown stack model: %s", stkmodel);
397 if(ISOPT(OPT_BANKSEL)) {
398 pic16_options.opt_banksel = getIntArg(OPT_BANKSEL, argv, i, *pargc);
402 if(ISOPT(REP_UDATA)) {
403 pic16_sectioninfo.at_udata = Safe_strdup(getStringArg(REP_UDATA, argv, i, *pargc));
408 alt_asm = Safe_strdup(getStringArg(ALT_ASM, argv, i, *pargc));
412 if(ISOPT(ALT_LINK)) {
413 alt_link = Safe_strdup(getStringArg(ALT_LINK, argv, i, *pargc));
418 pic16_options.ivt_loc = getIntArg(IVT_LOC, argv, i, *pargc);
425 tmp = Safe_strdup( getStringArg(NL_OPT, argv, i, *pargc) );
426 if(!STRCASECMP(tmp, "lf"))pic16_nl = 0;
427 else if(!STRCASECMP(tmp, "crlf"))pic16_nl = 1;
429 fprintf(stderr, "invalid termination character id\n");
436 pic16_options.no_crt = 0;
437 pic16_options.crt_name = Safe_strdup( getStringArg(USE_CRT, argv, i, *pargc) );
443 if(ISOPT(OFMSG_LRSUPPORT)) {
444 pic16_options.opt_flags |= OF_LR_SUPPORT;
450 if (ISOPT(OPTIMIZE_GOTO)) {
451 pic16_options.opt_flags |= OF_OPTIMIZE_GOTO;
459 extern set *userIncDirsSet;
461 static void _pic16_initPaths(void)
463 char pic16incDir[512];
464 char pic16libDir[512];
465 set *pic16incDirsSet=NULL;
466 set *pic16libDirsSet=NULL;
469 setMainValue("mcu", pic16->name[2] );
470 addSet(&preArgvSet, Safe_strdup("-D{mcu}"));
472 sprintf(pic16incDir, "%s%cpic16", INCLUDE_DIR_SUFFIX, DIR_SEPARATOR_CHAR);
473 sprintf(pic16libDir, "%s%cpic16", LIB_DIR_SUFFIX, DIR_SEPARATOR_CHAR);
476 if(!options.nostdinc) {
477 /* setup pic16 include directory */
478 pic16incDirsSet = appendStrSet(dataDirsSet, NULL, pic16incDir);
479 includeDirsSet = pic16incDirsSet;
480 // mergeSets(&includeDirsSet, pic16incDirsSet);
482 /* pic16 port should not search to the SDCC standard include directories,
483 * so add here the deleted include dirs that user has issued in command line */
484 mergeSets(&pic16incDirsSet, userIncDirsSet);
486 if(!options.nostdlib) {
487 /* setup pic16 library directory */
488 pic16libDirsSet = appendStrSet(dataDirsSet, NULL, pic16libDir);
489 libDirsSet = pic16libDirsSet;
490 // mergeSets(&libDirsSet, pic16libDirsSet);
493 if(!pic16_options.nodefaultlibs) {
494 /* now add the library for the device */
495 sprintf(devlib, "%s.lib", pic16->name[2]);
496 addSet(&libFilesSet, Safe_strdup(devlib));
498 /* add the internal SDCC library */
499 addSet(&libFilesSet, Safe_strdup( "libsdcc.lib" ));
503 extern set *linkOptionsSet;
504 char *msprintf(hTab *pvals, const char *pformat, ...);
505 int my_system(const char *cmd);
507 /* custom function to link objects */
508 static void _pic16_linkEdit(void)
510 hTab *linkValues=NULL;
518 * link command format:
519 * {linker} {incdirs} {lflags} -o {outfile} {spec_ofiles} {ofiles} {libs}
523 sprintf(lfrm, "{linker} {incdirs} {lflags} -o {outfile} {user_ofile} {spec_ofiles} {ofiles} {libs}");
525 shash_add(&linkValues, "linker", "gplink");
527 mergeSets(&tSet, libDirsSet);
528 mergeSets(&tSet, libPathsSet);
530 shash_add(&linkValues, "incdirs", joinStrSet( appendStrSet(tSet, "-I\"", "\"")));
531 shash_add(&linkValues, "lflags", joinStrSet(linkOptionsSet));
533 shash_add(&linkValues, "outfile", dstFileName);
535 if(fullSrcFileName) {
536 sprintf(temp, "%s.o", dstFileName);
537 // addSetHead(&relFilesSet, Safe_strdup(temp));
538 shash_add(&linkValues, "user_ofile", temp);
541 if(!pic16_options.no_crt)
542 shash_add(&linkValues, "spec_ofiles", pic16_options.crt_name);
544 shash_add(&linkValues, "ofiles", joinStrSet(relFilesSet));
545 shash_add(&linkValues, "libs", joinStrSet(libFilesSet));
547 lcmd = msprintf(linkValues, lfrm);
549 ret = my_system( lcmd );
558 /* forward declarations */
559 extern const char *pic16_linkCmd[];
560 extern const char *pic16_asmCmd[];
563 _pic16_finaliseOptions (void)
565 port->mem.default_local_map = data;
566 port->mem.default_globl_map = data;
568 /* peepholes are disabled for the time being */
571 /* explicit enable peepholes for testing */
572 if(pic16_enable_peeps)
575 options.all_callee_saves = 1; // always callee saves
578 options.float_rent = 1;
579 options.intlong_rent = 1;
583 if(alt_asm && strlen(alt_asm))
584 pic16_asmCmd[0] = alt_asm;
586 if(alt_link && strlen(alt_link))
587 pic16_linkCmd[0] = alt_link;
589 if(!pic16_options.no_crt) {
590 pic16_options.omit_ivt = 1;
591 pic16_options.leave_reset = 0;
597 if (options.model == MODEL_LARGE)
599 port->mem.default_local_map = xdata;
600 port->mem.default_globl_map = xdata;
604 port->mem.default_local_map = data;
605 port->mem.default_globl_map = data;
608 if (options.stack10bit)
610 if (options.model != MODEL_FLAT24)
613 "*** warning: 10 bit stack mode is only supported in flat24 model.\n");
614 fprintf (stderr, "\t10 bit stack mode disabled.\n");
615 options.stack10bit = 0;
619 /* Fixup the memory map for the stack; it is now in
620 * far space and requires a FPOINTER to access it.
623 istack->ptrType = FPOINTER;
630 _pic16_setDefaultOptions (void)
632 options.stackAuto = 0; /* implicit declaration */
633 /* port is not capable yet to allocate separate registers
634 * dedicated for passing certain parameters */
636 /* initialize to defaults section locations, names and addresses */
637 pic16_sectioninfo.at_udata = "udata";
639 /* set pic16 port options to defaults */
640 pic16_options.no_banksel = 0;
641 pic16_options.opt_banksel = 0;
642 pic16_options.omit_configw = 0;
643 pic16_options.omit_ivt = 0;
644 pic16_options.leave_reset = 0;
645 pic16_options.stack_model = 0; /* 0 for 'small', 1 for 'large' */
646 pic16_options.ivt_loc = 0x000000;
647 pic16_options.nodefaultlibs = 0;
648 pic16_options.dumpcalltree = 0;
649 pic16_options.crt_name = "crt0i.o"; /* the default crt to link */
650 pic16_options.no_crt = 0; /* use crt by default */
651 pic16_options.ip_stack = 1; /* set to 1 to enable ipop/ipush for stack */
652 pic16_options.gstack = 0;
653 pic16_options.debgen = 0;
657 _pic16_getRegName (struct regs *reg)
666 static char *_pic16_mangleFunctionName(char *sz)
668 // fprintf(stderr, "mangled function name: %s\n", sz);
676 _pic16_genAssemblerPreamble (FILE * of)
678 char *name = pic16_processor_base_name();
682 fprintf(stderr,"WARNING: No Pic has been selected, defaulting to %s\n",name);
685 fprintf (of, "\tlist\tp=%s\n",&name[1]);
687 if(!pic16_options.omit_configw) {
688 pic16_emitConfigRegs(of);
690 pic16_emitIDRegs(of);
693 fprintf (of, "\tradix dec\n");
696 /* Generate interrupt vector table. */
698 _pic16_genIVT (FILE * of, symbol ** interrupts, int maxInterrupts)
701 /* PIC18F family has only two interrupts, the high and the low
702 * priority interrupts, which reside at 0x0008 and 0x0018 respectively - VR */
704 if((!pic16_options.omit_ivt) || (pic16_options.omit_ivt && pic16_options.leave_reset)) {
705 fprintf(of, "; RESET vector\n");
706 fprintf(of, "\tgoto\t__sdcc_gsinit_startup\n");
709 if(!pic16_options.omit_ivt) {
710 fprintf(of, "\tres 4\n");
713 fprintf(of, "; High priority interrupt vector 0x0008\n");
715 fprintf(of, "\tgoto\t%s\n", interrupts[1]->rname);
716 fprintf(of, "\tres\t12\n");
718 fprintf(of, "\tretfie\n");
719 fprintf(of, "\tres\t14\n");
722 fprintf(of, "; Low priority interrupt vector 0x0018\n");
724 fprintf(of, "\tgoto\t%s\n", interrupts[2]->rname);
726 fprintf(of, "\tretfie\n");
733 /* return True if the port can handle the type,
734 * False to convert it to function call */
735 static bool _hasNativeMulFor (iCode *ic, sym_link *left, sym_link *right)
737 // fprintf(stderr,"checking for native mult for %c (size: %d)\n", ic->op, getSize(OP_SYMBOL(IC_RESULT(ic))->type));
740 /* multiplication is fixed */
741 /* support mul for char/int/long */
743 && (getSize(OP_SYMBOL(IC_LEFT(ic))->type ) < 2))return TRUE;
747 /* support div for char/int/long */
748 if((getSize(OP_SYMBOL(IC_LEFT(ic))->type ) < 0)
749 && (ic->op == '/'))return TRUE;
757 /* Do CSE estimation */
758 static bool cseCostEstimation (iCode *ic, iCode *pdic)
760 // operand *result = IC_RESULT(ic);
761 // sym_link *result_type = operandType(result);
764 /* VR -- this is an adhoc. Put here after conversation
765 * with Erik Epetrich */
769 || ic->op == EQ_OP) {
771 fprintf(stderr, "%d %s\n", __LINE__, __FUNCTION__);
776 /* if it is a pointer then return ok for now */
777 if (IC_RESULT(ic) && IS_PTR(result_type)) return 1;
779 /* if bitwise | add & subtract then no since mcs51 is pretty good at it
780 so we will cse only if they are local (i.e. both ic & pdic belong to
781 the same basic block */
782 if (IS_BITWISE_OP(ic) || ic->op == '+' || ic->op == '-') {
783 /* then if they are the same Basic block then ok */
784 if (ic->eBBlockNum == pdic->eBBlockNum) return 1;
789 /* for others it is cheaper to do the cse */
795 /* Indicate which extended bit operations this port supports */
797 hasExtBitOp (int op, int size)
801 /* || op == GETHBIT */ /* GETHBIT doesn't look complete for PIC */
808 /* Indicate the expense of an access to an output storage class */
810 oclsExpense (struct memmap *oclass)
812 /* The IN_FARSPACE test is compatible with historical behaviour, */
813 /* but I don't think it is applicable to PIC. If so, please feel */
814 /* free to remove this test -- EEP */
815 if (IN_FARSPACE(oclass))
821 /** $1 is the input object file (PIC16 specific) // >>always the basename<<.
822 $2 is always the output file.
823 $3 -L path and -l libraries
824 $l is the list of extra options that should be there somewhere...
825 MUST be terminated with a NULL.
827 const char *pic16_linkCmd[] =
829 "gplink", "$l", "-o \"$2\"", "\"$1\"","$3", NULL
834 /** $1 is always the basename.
835 $2 is always the output file.
836 $3 varies (nothing currently)
837 $l is the list of extra options that should be there somewhere...
838 MUST be terminated with a NULL.
840 const char *pic16_asmCmd[] =
842 "gpasm", "$l", "$3", "-c", "\"$1.asm\"", "-o \"$2\"", NULL
851 "MCU PIC16", /* Target name */
852 "p18f452", /* Processor */
855 TRUE, /* Emit glue around main */
856 MODEL_SMALL | MODEL_LARGE | MODEL_FLAT24,
860 pic16_asmCmd, /* assembler command and arguments */
861 NULL, /* alternate macro based form */
862 "-g", /* arguments for debug mode */
863 NULL, /* arguments for normal mode */
864 0, /* print externs as global */
865 ".asm", /* assembler file extension */
866 NULL /* no do_assemble function */
869 NULL, // pic16_linkCmd, /* linker command and arguments */
870 NULL, /* alternate macro based form */
871 _pic16_linkEdit, //NULL, /* no do_link function */
872 ".o", /* extension for object files */
873 0 /* no need for linker file */
885 3, /* fptr, far pointers (see Microchip) */
892 "XSEG (XDATA)", // xstack
893 "STACK (DATA)", // istack
894 "CSEG (CODE)", // code
895 "DSEG (DATA)", // data
896 "ISEG (DATA)", // idata
898 "XSEG (XDATA)", // xdata
900 "RSEG (DATA)", // reg
901 "GSINIT (CODE)", // static
902 "OSEG (OVR,DATA)", // overlay
903 "GSFINAL (CODE)", // post static
904 "HOME (CODE)", // home
907 NULL, // default location for auto vars
908 NULL, // default location for global vars
909 1 // code is read only 1=yes
912 NULL, /* genExtraAreaDeclaration */
913 NULL /* genExatrAreaLinkOptions */
916 /* stack related information */
917 -1, /* -1 stack grows downwards, +1 upwards */
918 1, /* extra overhead when calling between banks */
919 4, /* extra overhead when the function is an ISR */
920 1, /* extra overhead for a function call */
921 1, /* re-entrant space */
922 0 /* 'banked' call overhead, mild overlap with bank_overhead */
924 /* pic16 has an 8 bit mul */
929 pic16_emitDebuggerSymbol
932 255/3, /* maxCount */
933 3, /* sizeofElement */
934 /* The rest of these costs are bogus. They approximate */
935 /* the behavior of src/SDCCicode.c 1.207 and earlier. */
936 {4,4,4}, /* sizeofMatchJump[] */
937 {0,0,0}, /* sizeofRangeCompare[] */
938 0, /* sizeofSubtract */
939 3, /* sizeofDispatch */
946 _pic16_finaliseOptions,
947 _pic16_setDefaultOptions,
948 pic16_assignRegisters,
951 _pic16_genAssemblerPreamble,
952 NULL, /* no genAssemblerEnd */
954 NULL, // _pic16_genXINIT
955 NULL, /* genInitStartup */
956 _pic16_reset_regparm,
958 _process_pragma, /* process a pragma */
959 _pic16_mangleFunctionName, /* mangles function name */
961 hasExtBitOp, /* hasExtBitOp */
962 oclsExpense, /* oclsExpense */
964 TRUE, /* little endian */
967 1, /* transform <= to ! > */
968 1, /* transform >= to ! < */
969 1, /* transform != to !(a == b) */
971 FALSE, /* No array initializer support. */
972 0, //cseCostEstimation, /* !!!no CSE cost estimation yet */
973 NULL, /* no builtin functions */
974 GPOINTER, /* treat unqualified pointers as "generic" pointers */
975 1, /* reset labelKey to 1 */
976 1, /* globals & local static allowed */