1 /*-------------------------------------------------------------------------
2
3 main.c - pic16 specific general functions.
4
5 Written by - Scott Dattalo scott@dattalo.com
6 Ported to PIC16 by - Martin Dubuc m.debuc@rogers.com
7
8 Note that mlh prepended _pic16_ on the static functions. Makes
9 it easier to set a breakpoint using the debugger.
10
11
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
15 later version.
16
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.
21
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 -------------------------------------------------------------------------*/
26
27 #include "common.h"
28 #include "dbuf_string.h"
29
30 #include "main.h"
31 #include "ralloc.h"
32 #include "device.h"
33 #include "glue.h"
34 #include "pcode.h"
35 #include "SDCCargs.h"
36 #include "dbuf_string.h"
37
38
39 static char _defaultRules[] =
40 {
41 #include "peeph.rul"
42 };
43
44 /* list of key words used by pic16 */
45 static char *_pic16_keywords[] =
46 {
47 "at",
48 "code",
49 "critical",
50 "register",
51 "data",
52 "far",
53 "interrupt",
54 "near",
55 //"pdata",
56 "reentrant",
57 "sfr",
58 "sfr16",
59 "using",
60 "_data",
61 "_code",
62 "_generic",
63 "_near",
64 //"_pdata",
65 "_naked",
66 "shadowregs",
67 "wparam",
68 "prodlp",
69 "prodhp",
70 "fsr0lp",
71 "fixed16x16",
72
73 // "bit",
74 // "idata",
75 // "sbit",
76 // "xdata",
77 // "_xdata",
78 // "_idata",
79 NULL
80 };
81
82
83 pic16_sectioninfo_t pic16_sectioninfo;
84 int has_xinst_config = 0;
85
86 static int regParmFlg = 0; /* determine if we can register a parameter */
87
88 pic16_options_t pic16_options;
89 pic16_config_options_t *pic16_config_options;
90
91 extern set *includeDirsSet;
92 extern set *dataDirsSet;
93 extern set *libFilesSet;
94
95 /* Also defined in gen.h, but the #include is commented out */
96 /* for an unknowned reason. - EEP */
97 void pic16_emitDebuggerSymbol (const char *);
98
99 extern void pic16_emitConfigRegs (FILE *of);
100 extern void pic16_emitIDRegs (FILE *of);
101
102
103 static void
_pic16_init(void)104 _pic16_init (void)
105 {
106 asm_addTree (&asm_asxxxx_mapping);
107 pic16_pCodeInitRegisters();
108 maxInterrupts = 2;
109 memset(&pic16_options, 0, sizeof(pic16_options));
110 }
111
112 static void
_pic16_reset_regparm(struct sym_link * funcType)113 _pic16_reset_regparm (struct sym_link *funcType)
114 {
115 regParmFlg = 0;
116 }
117
118 static int
_pic16_regparm(sym_link * l,bool reentrant)119 _pic16_regparm (sym_link * l, bool reentrant)
120 {
121 /* force all parameters via SEND/RECEIVE */
122 if(0 /*pic16_options.ip_stack*/) {
123 /* for this processor it is simple
124 * can pass only the first parameter in a register */
125 if(regParmFlg)return 0;
126 regParmFlg++;
127 return 1; //regParmFlg;
128 } else {
129 /* otherwise pass all arguments in registers via SEND/RECEIVE */
130 regParmFlg++;// = 1;
131 return regParmFlg;
132 }
133 }
134
135
136 int initsfpnt=0; /* set to 1 if source provides a pragma for stack
137 * so glue() later emits code to initialize stack/frame pointers */
138 set *absSymSet;
139
140 set *sectNames=NULL; /* list of section listed in pragma directives */
141 set *sectSyms=NULL; /* list of symbols set in a specific section */
142 set *wparamList=NULL;
143
144 #if 0
145 /* This is an experimental code for #pragma inline
146 and is temporarily disabled for 2.5.0 release */
147 set *asmInlineMap=NULL;
148 #endif /* 0 */
149
150 struct {
151 unsigned ignore: 1;
152 unsigned want_libc: 1;
153 unsigned want_libm: 1;
154 unsigned want_libio: 1;
155 unsigned want_libdebug: 1;
156 } libflags = { 0, 0, 0, 0, 0 };
157
158
159 enum {
160 P_STACK = 1,
161 P_CODE,
162 P_UDATA,
163 P_LIBRARY,
164 P_CONFIG
165 };
166
167 static int
do_pragma(int id,const char * name,const char * cp)168 do_pragma (int id, const char *name, const char *cp)
169 {
170 struct pragma_token_s token;
171 int err = 0;
172 int processed = 1;
173
174 init_pragma_token(&token);
175
176 switch (id)
177 {
178 /* #pragma stack [stack-position] [stack-len] */
179 case P_STACK:
180 {
181 unsigned int stackPos, stackLen;
182 reg_info *reg;
183 symbol *sym;
184
185 cp = get_pragma_token (cp, &token);
186 if (TOKEN_INT != token.type)
187 {
188 err = 1;
189 break;
190 }
191 stackPos = token.val.int_val;
192
193 cp = get_pragma_token (cp, &token);
194 if (TOKEN_INT != token.type)
195 {
196 err = 1;
197 break;
198 }
199 stackLen = token.val.int_val;
200
201 cp = get_pragma_token (cp, &token);
202 if (TOKEN_EOL != token.type)
203 {
204 err = 1;
205 break;
206 }
207
208 if (stackLen < 1) {
209 stackLen = 64;
210 fprintf (stderr, "%s:%d: warning: setting stack to default size %d (0x%04x)\n",
211 filename, lineno, stackLen, stackLen);
212 }
213
214 /* check sanity of stack */
215 if ((stackPos >> 8) != ((stackPos + stackLen - 1) >> 8)) {
216 fprintf (stderr, "%s:%u: warning: stack [0x%03X,0x%03X] crosses memory bank boundaries (not fully tested)\n",
217 filename, lineno, stackPos, stackPos + stackLen - 1);
218 }
219
220 if (pic16) {
221 if (stackPos < pic16->acsSplitOfs) {
222 fprintf (stderr, "%s:%u: warning: stack [0x%03X, 0x%03X] intersects with the access bank [0x000,0x%03x] -- this is highly discouraged!\n",
223 filename, lineno, stackPos, stackPos + stackLen - 1, pic16->acsSplitOfs);
224 }
225
226 if (stackPos+stackLen > 0xF00 + pic16->acsSplitOfs) {
227 fprintf (stderr, "%s:%u: warning: stack [0x%03X,0x%03X] intersects with special function registers [0x%03X,0xFFF]-- this is highly discouraged!\n",
228 filename, lineno, stackPos, stackPos + stackLen - 1, 0xF00 + pic16->acsSplitOfs);
229 }
230
231 if (stackPos+stackLen > pic16->RAMsize) {
232 fprintf (stderr, "%s:%u: error: stack [0x%03X,0x%03X] is placed outside available memory [0x000,0x%03X]!\n",
233 filename, lineno, stackPos, stackPos + stackLen - 1, pic16->RAMsize-1);
234 err = 1;
235 break;
236 }
237 }
238
239 reg = newReg (REG_SFR, PO_SFR_REGISTER, stackPos, "_stack", stackLen-1, 0, NULL);
240 addSet (&pic16_fix_udata, reg);
241
242 reg = newReg (REG_SFR, PO_SFR_REGISTER, stackPos + stackLen-1, "_stack_end", 1, 0, NULL);
243 addSet (&pic16_fix_udata, reg);
244
245 sym = newSymbol ("stack", 0);
246 SNPRINTF(sym->rname, sizeof(sym->rname), "_%s", sym->name);
247 addSet (&publics, sym);
248
249 sym = newSymbol ("stack_end", 0);
250 SNPRINTF(sym->rname, sizeof(sym->rname), "_%s", sym->name);
251 addSet (&publics, sym);
252
253 initsfpnt = 1; // force glue() to initialize stack/frame pointers */
254 }
255 break;
256
257 /* #pragma code [symbol] [location] */
258 case P_CODE:
259 {
260 absSym *absS;
261
262 cp = get_pragma_token (cp, &token);
263 if (TOKEN_STR != token.type)
264 goto code_err;
265
266 absS = Safe_alloc(sizeof(absSym));
267 SNPRINTF(absS->name, sizeof(absS->name), "_%s", get_pragma_string(&token));
268
269 cp = get_pragma_token (cp, &token);
270 if (TOKEN_INT != token.type)
271 {
272 code_err:
273 //fprintf (stderr, "%s:%d: #pragma code [symbol] [location] -- symbol or location missing\n", filename, lineno);
274 err = 1;
275 break;
276 }
277 absS->address = token.val.int_val;
278
279 cp = get_pragma_token (cp, &token);
280 if (TOKEN_EOL != token.type)
281 {
282 err = 1;
283 break;
284 }
285
286 if ((absS->address % 2) != 0) {
287 absS->address--;
288 fprintf (stderr, "%s:%d: warning: code memory locations should be word aligned, will locate to 0x%06x instead\n",
289 filename, lineno, absS->address);
290 }
291
292 addSet (&absSymSet, absS);
293 // fprintf(stderr, "%s:%d symbol %s will be placed in location 0x%06x in code memory\n",
294 // __FILE__, __LINE__, symname, absS->address);
295 }
296 break;
297
298 /* #pragma udata [section-name] [symbol] */
299 case P_UDATA:
300 {
301 char *sectname;
302 const char *symname;
303 symbol *nsym;
304 sectSym *ssym;
305 sectName *snam;
306 int found = 0;
307
308 cp = get_pragma_token (cp, &token);
309 if (TOKEN_STR == token.type)
310 sectname = Safe_strdup (get_pragma_string (&token));
311 else
312 {
313 err = 1;
314 break;
315 }
316
317 cp = get_pragma_token (cp, &token);
318 if (TOKEN_STR == token.type)
319 symname = get_pragma_string (&token);
320 else
321 {
322 //fprintf (stderr, "%s:%d: #pragma udata [section-name] [symbol] -- section-name or symbol missing!\n", filename, lineno);
323 err = 1;
324 symname = NULL;
325 }
326
327 while (symname)
328 {
329 size_t len = strlen(symname) + 2;
330
331 ssym = Safe_alloc(sizeof(sectSym));
332 ssym->name = Safe_alloc(len);
333 SNPRINTF(ssym->name, len, "%s%s", port->fun_prefix, symname);
334 ssym->reg = NULL;
335
336 addSet (§Syms, ssym);
337
338 nsym = newSymbol ((char *)symname, 0);
339 strcpy(nsym->rname, ssym->name);
340
341 #if 0
342 checkAddSym (&publics, nsym);
343 #endif
344
345 found = 0;
346 for (snam = setFirstItem (sectNames); snam; snam = setNextItem (sectNames))
347 {
348 if (!strcmp (sectname, snam->name))
349 {
350 found=1;
351 break;
352 }
353 }
354
355 if(!found)
356 {
357 snam = Safe_alloc(sizeof(sectName));
358 snam->name = Safe_strdup (sectname);
359 snam->regsSet = NULL;
360
361 addSet (§Names, snam);
362 }
363
364 ssym->section = snam;
365
366 #if 0
367 fprintf (stderr, "%s:%d placing symbol %s at section %s (%p)\n", __FILE__, __LINE__,
368 ssym->name, snam->name, snam);
369 #endif
370
371 cp = get_pragma_token (cp, &token);
372 if (TOKEN_STR == token.type)
373 symname = get_pragma_string (&token);
374 else if (TOKEN_EOL == token.type)
375 symname = NULL;
376 else
377 {
378 err = 1;
379 symname = NULL;
380 }
381 }
382
383 Safe_free (sectname);
384 }
385 break;
386
387 /* #pragma library library_module */
388 case P_LIBRARY:
389 {
390 const char *lmodule;
391
392 cp = get_pragma_token (cp, &token);
393 if (TOKEN_EOL != token.type)
394 {
395 lmodule = get_pragma_string (&token);
396
397 /* lmodule can be:
398 * c link the C library
399 * math link the math library
400 * io link the IO library
401 * debug link the debug libary
402 * anything else, will link as-is */
403
404 if(!strcmp (lmodule, "c"))
405 libflags.want_libc = 1;
406 else if(!strcmp (lmodule, "math"))
407 libflags.want_libm = 1;
408 else if(!strcmp (lmodule, "io"))
409 libflags.want_libio = 1;
410 else if(!strcmp (lmodule, "debug"))
411 libflags.want_libdebug = 1;
412 else if(!strcmp (lmodule, "ignore"))
413 libflags.ignore = 1;
414 else
415 {
416 if(!libflags.ignore)
417 {
418 fprintf (stderr, "link library %s\n", lmodule);
419 addSetHead (&libFilesSet, (char *)lmodule);
420 }
421 }
422 }
423 else
424 {
425 err = 1;
426 break;
427 }
428
429 cp = get_pragma_token (cp, &token);
430 if (TOKEN_EOL != token.type)
431 {
432 err = 1;
433 break;
434 }
435 }
436 break;
437
438 case P_CONFIG:
439 {
440 const char *begin;
441 struct dbuf_s dbuf;
442 bool first = TRUE;
443
444 token.type = TOKEN_EOL; /* just to make the final error test happy */
445
446 dbuf_init (&dbuf, 128);
447 dbuf_append_str (&dbuf, "CONFIG\t");
448
449 do
450 {
451 int isXINST = 0;
452
453 if (first)
454 first = FALSE;
455 else
456 {
457 if (',' == *cp)
458 ++cp;
459 else
460 goto error;
461
462 dbuf_append_char (&dbuf, ',');
463 }
464
465
466 while (isspace (*cp))
467 ++cp;
468
469 if (*cp == '_' || isalpha (*cp))
470 {
471 begin = cp++;
472 while (*cp == '_' || isalnum (*cp))
473 ++cp;
474 if ((5 == (cp - begin)) && (0 == strncmp("XINST", begin, 5)))
475 {
476 /* Keep warning if we have XINST=ON ... */
477 isXINST = 1;
478 } // if
479 dbuf_append (&dbuf, begin, cp - begin);
480 }
481 else
482 goto error;
483
484 while (isspace (*cp))
485 ++cp;
486
487 if ('=' == *cp)
488 dbuf_append_char (&dbuf, *cp++);
489 else
490 goto error;
491
492 while (isspace (*cp))
493 ++cp;
494
495 if (*cp == '_' || isalnum (*cp))
496 {
497 begin = cp++;
498 while (*cp == '_' || isalnum (*cp))
499 ++cp;
500 if (isXINST && (3 == cp - begin) && (0 == strncmp("OFF", begin, 3)))
501 {
502 /* Suppress warning in glue.c if #pragma config XINST=OFF is present. */
503 has_xinst_config = 1;
504 } // if
505 dbuf_append (&dbuf, begin, cp - begin);
506 }
507 else
508 goto error;
509
510 while (isspace (*cp))
511 ++cp;
512 }
513 while ('\0' != *cp);
514
515 /* append to the config options list */
516 if (!pic16_config_options)
517 {
518 pic16_config_options = malloc (sizeof (pic16_config_options_t));
519 memset (pic16_config_options, 0, sizeof (pic16_config_options_t));
520 pic16_config_options->config_str = dbuf_detach_c_str (&dbuf);
521 }
522 else
523 {
524 pic16_config_options_t *p;
525
526 for (p = pic16_config_options; p->next; p = p->next)
527 ;
528 p->next = malloc (sizeof (pic16_config_options_t));
529 memset (p->next, 0, sizeof (pic16_config_options_t));
530 p->next->config_str = dbuf_detach_c_str (&dbuf);
531 }
532 break;
533
534 error:
535 dbuf_destroy(&dbuf);
536 err = 1;
537 }
538 break;
539
540 #if 0
541 /* This is an experimental code for #pragma inline
542 and is temporarily disabled for 2.5.0 release */
543 case P_INLINE:
544 {
545 char *tmp = strtok ((char *)NULL, WHITECOMMA);
546
547 while (tmp)
548 {
549 addSet (&asmInlineMap, Safe_strdup ( tmp ));
550 tmp = strtok ((char *)NULL, WHITECOMMA);
551 }
552
553 {
554 char *s;
555
556 for (s = setFirstItem (asmInlineMap); s ; s = setNextItem (asmInlineMap))
557 {
558 debugf ("inline asm: `%s'\n", s);
559 }
560 }
561 }
562 break;
563 #endif /* 0 */
564
565 default:
566 processed = 0;
567 break;
568 }
569
570 get_pragma_token (cp, &token);
571
572 if (1 == err || token.type != TOKEN_EOL)
573 werror (W_BAD_PRAGMA_ARGUMENTS, name);
574
575 free_pragma_token (&token);
576 return processed;
577 }
578
579 static struct pragma_s pragma_tbl[] = {
580 { "stack", P_STACK, 0, do_pragma },
581 { "code", P_CODE, 0, do_pragma },
582 { "udata", P_UDATA, 0, do_pragma },
583 { "library", P_LIBRARY, 0, do_pragma },
584 { "config", P_CONFIG, 0, do_pragma },
585 /*{ "inline", P_INLINE, 0, do_pragma }, */
586 { NULL, 0, 0, NULL },
587 };
588
589 static int
_process_pragma(const char * s)590 _process_pragma (const char *s)
591 {
592 return process_pragma_tbl(pragma_tbl, s);
593 }
594
595 #define REP_UDATA "--preplace-udata-with="
596
597 #define STACK_MODEL "--pstack-model="
598 #define OPT_BANKSEL "--obanksel="
599
600 #define ALT_ASM "--asm="
601 #define ALT_LINK "--link="
602
603 #define IVT_LOC "--ivt-loc="
604 #define NO_DEFLIBS "--nodefaultlibs"
605 #define MPLAB_COMPAT "--mplab-comp"
606
607 #define USE_CRT "--use-crt="
608
609 #define OFMSG_LRSUPPORT "--flr-support"
610
611 #define NO_OPTIMIZE_GOTO "--no-optimize-goto"
612 #define OPTIMIZE_CMP "--optimize-cmp"
613 #define OPTIMIZE_DF "--optimize-df"
614
615 char *alt_asm = NULL;
616 char *alt_link = NULL;
617
618 int pic16_mplab_comp = 0;
619 extern int pic16_debug_verbose;
620 extern int pic16_ralloc_debug;
621 extern int pic16_pcode_verbose;
622
623 int pic16_enable_peeps = 0;
624
625 OPTION pic16_optionsTable[]= {
626 /* code generation options */
627 { 0, STACK_MODEL, NULL, "use stack model 'small' (default) or 'large'"},
628 #if XINST
629 { 'y', "--extended", &pic16_options.xinst, "enable Extended Instruction Set/Literal Offset Addressing mode"},
630 #endif
631 { 0, "--pno-banksel", &pic16_options.no_banksel, "do not generate BANKSEL assembler directives"},
632
633 /* optimization options */
634 { 0, OPT_BANKSEL, &pic16_options.opt_banksel, "set banksel optimization level (default=0 no)", CLAT_INTEGER },
635 { 0, "--denable-peeps", &pic16_enable_peeps, "explicit enable of peepholes"},
636 { 0, NO_OPTIMIZE_GOTO, NULL, "do NOT use (conditional) BRA instead of GOTO"},
637 { 0, OPTIMIZE_CMP, NULL, "try to optimize some compares"},
638 { 0, OPTIMIZE_DF, NULL, "thoroughly analyze data flow (memory and time intensive!)"},
639
640 /* assembling options */
641 { 0, ALT_ASM, &alt_asm, "Use alternative assembler", CLAT_STRING},
642 { 0, MPLAB_COMPAT, &pic16_mplab_comp, "enable compatibility mode for MPLAB utilities (MPASM/MPLINK)"},
643
644 /* linking options */
645 { 0, ALT_LINK, &alt_link, "Use alternative linker", CLAT_STRING },
646 { 0, REP_UDATA, &pic16_sectioninfo.at_udata, "Place udata variables at another section: udata_acs, udata_ovr, udata_shr", CLAT_STRING },
647 { 0, IVT_LOC, NULL, "Set address of interrupt vector table."},
648 { 0, NO_DEFLIBS, &pic16_options.nodefaultlibs, "do not link default libraries when linking"},
649 { 0, USE_CRT, NULL, "use <crt-o> run-time initialization module"},
650 { 0, "--no-crt", &pic16_options.no_crt, "do not link any default run-time initialization module"},
651
652 /* debugging options */
653 { 0, "--debug-xtra", &pic16_debug_verbose, "show more debug info in assembly output"},
654 { 0, "--debug-ralloc", &pic16_ralloc_debug, "dump register allocator debug file *.d"},
655 { 0, "--pcode-verbose", &pic16_pcode_verbose, "dump pcode related info"},
656 { 0, "--calltree", &pic16_options.dumpcalltree, "dump call tree in .calltree file"},
657 { 0, "--gstack", &pic16_options.gstack, "trace stack pointer push/pop to overflow"},
658 { 0, "--no-warn-non-free", &pic16_options.no_warn_non_free, "suppress warning on absent --use-non-free option" },
659 { 0, NULL, NULL, NULL}
660 };
661
662
663 #define ISOPT(str) !strncmp(argv[ *i ], str, strlen(str) )
664
665 static bool
_pic16_parseOptions(int * pargc,char ** argv,int * i)666 _pic16_parseOptions (int *pargc, char **argv, int *i)
667 {
668 int j=0;
669 char *stkmodel;
670
671 /* TODO: allow port-specific command line options to specify
672 * segment names here.
673 */
674
675 /* check for arguments that have associated an integer variable */
676 while(pic16_optionsTable[j].pparameter) {
677 if(ISOPT( pic16_optionsTable[j].longOpt )) {
678 (*(int *)pic16_optionsTable[j].pparameter)++;
679 return TRUE;
680 }
681 j++;
682 }
683
684 if(ISOPT(STACK_MODEL)) {
685 stkmodel = getStringArg(STACK_MODEL, argv, i, *pargc);
686 if(!STRCASECMP(stkmodel, "small"))pic16_options.stack_model = 0;
687 else if(!STRCASECMP(stkmodel, "large"))pic16_options.stack_model = 1;
688 else {
689 fprintf(stderr, "Unknown stack model: %s", stkmodel);
690 exit(EXIT_FAILURE);
691 }
692 return TRUE;
693 }
694
695 if(ISOPT(IVT_LOC)) {
696 pic16_options.ivt_loc = getIntArg(IVT_LOC, argv, i, *pargc);
697 fprintf(stderr, "%s:%d setting interrupt vector addresses 0x%x\n", __FILE__, __LINE__, pic16_options.ivt_loc);
698 return TRUE;
699 }
700
701 if(ISOPT(USE_CRT)) {
702 pic16_options.no_crt = 0;
703 pic16_options.crt_name = Safe_strdup( getStringArg(USE_CRT, argv, i, *pargc) );
704
705 return TRUE;
706 }
707
708 #if 0
709 if(ISOPT(OFMSG_LRSUPPORT)) {
710 pic16_options.opt_flags |= OF_LR_SUPPORT;
711 return TRUE;
712 }
713 #endif
714
715 if (ISOPT(NO_OPTIMIZE_GOTO)) {
716 pic16_options.opt_flags |= OF_NO_OPTIMIZE_GOTO;
717 return TRUE;
718 }
719
720 if(ISOPT(OPTIMIZE_CMP)) {
721 pic16_options.opt_flags |= OF_OPTIMIZE_CMP;
722 return TRUE;
723 }
724
725 if (ISOPT(OPTIMIZE_DF)) {
726 pic16_options.opt_flags |= OF_OPTIMIZE_DF;
727 return TRUE;
728 }
729
730
731 return FALSE;
732 }
733
734 extern void pic16_init_pic(const char *name);
735
736 static void
_pic16_initPaths(void)737 _pic16_initPaths (void)
738 {
739 pic16_init_pic(port->processor);
740 }
741
742 extern set *linkOptionsSet;
743 char *msprintf(hTab *pvals, const char *pformat, ...);
744
745 /* forward declarations */
746 extern const char *pic16_linkCmd[];
747 extern const char *pic16_asmCmd[];
748 extern set *asmOptionsSet;
749
750 /* custom function to link objects */
751 static void
_pic16_linkEdit(void)752 _pic16_linkEdit (void)
753 {
754 /*
755 * link command format:
756 * {linker} {incdirs} {lflags} -o {outfile} {spec_ofiles} {ofiles} {libs}
757 *
758 */
759 #define LFRM "{linker} {incdirs} {lflags} -w -r -o {outfile} {user_ofile} {ofiles} {spec_ofiles} {libs}"
760 hTab *linkValues = NULL;
761 char *lcmd;
762 set *tSet = NULL;
763 int ret;
764
765 shash_add (&linkValues, "linker", pic16_linkCmd[0]);
766
767 mergeSets (&tSet, libPathsSet);
768 mergeSets (&tSet, libDirsSet);
769
770 shash_add (&linkValues, "incdirs", joinStrSet (processStrSet(tSet, "-I", NULL, shell_escape)));
771 shash_add (&linkValues, "lflags", joinStrSet (linkOptionsSet));
772
773 {
774 char *s = shell_escape (fullDstFileName ? fullDstFileName : dstFileName);
775
776 shash_add (&linkValues, "outfile", s);
777 Safe_free (s);
778 }
779
780 if (fullSrcFileName)
781 {
782 struct dbuf_s dbuf;
783 char *s;
784
785 dbuf_init (&dbuf, 128);
786
787 dbuf_append_str (&dbuf, fullDstFileName ? fullDstFileName : dstFileName);
788 dbuf_append (&dbuf, ".o", 2);
789 s = shell_escape (dbuf_c_str (&dbuf));
790 dbuf_destroy (&dbuf);
791 shash_add (&linkValues, "user_ofile", s);
792 Safe_free (s);
793 }
794
795 if (!pic16_options.no_crt)
796 {
797 char *s = shell_escape (pic16_options.crt_name);
798
799 shash_add (&linkValues, "spec_ofiles", s);
800 Safe_free (s);
801 }
802
803 shash_add (&linkValues, "ofiles", joinStrSet (processStrSet (relFilesSet, NULL, NULL, shell_escape)));
804
805 if (!libflags.ignore)
806 {
807 if (libflags.want_libc)
808 addSet (&libFilesSet, Safe_strdup ("libc18f.lib"));
809
810 if (libflags.want_libm)
811 addSet (&libFilesSet, Safe_strdup ("libm18f.lib"));
812
813 if (libflags.want_libio)
814 {
815 /* build libio18f452.lib name */
816 struct dbuf_s dbuf;
817
818 dbuf_init (&dbuf, 128);
819
820 dbuf_append (&dbuf, "libio", sizeof ("libio") - 1);
821 dbuf_append_str (&dbuf, pic16->name[1]);
822 dbuf_append (&dbuf, ".lib", sizeof (".lib") - 1);
823 addSet (&libFilesSet, dbuf_detach_c_str (&dbuf));
824 }
825
826 if (libflags.want_libdebug)
827 addSet(&libFilesSet, Safe_strdup ("libdebug.lib"));
828 }
829
830 shash_add (&linkValues, "libs", joinStrSet (processStrSet (libFilesSet, NULL, NULL, shell_escape)));
831
832 lcmd = msprintf(linkValues, LFRM);
833 ret = sdcc_system (lcmd);
834 Safe_free (lcmd);
835
836 if (ret)
837 exit (1);
838 }
839
840
841 static void
_pic16_finaliseOptions(void)842 _pic16_finaliseOptions (void)
843 {
844 struct dbuf_s dbuf;
845
846 port->mem.default_local_map = data;
847 port->mem.default_globl_map = data;
848
849 /* peepholes are disabled for the time being */
850 options.nopeep = 1;
851
852 /* explicit enable peepholes for testing */
853 if (pic16_enable_peeps)
854 options.nopeep = 0;
855
856 options.all_callee_saves = 1; // always callee saves
857
858 #if 0
859 options.float_rent = 1;
860 options.intlong_rent = 1;
861 #endif
862
863 dbuf_init (&dbuf, 128);
864
865 dbuf_set_length (&dbuf, 0);
866 dbuf_append (&dbuf, "-D__", sizeof ("-D__") - 1);
867 dbuf_append_str (&dbuf, pic16->name[1]);
868 addSet (&preArgvSet, Safe_strdup (dbuf_c_str (&dbuf)));
869
870 {
871 char *upperProc, *p1, *p2;
872 int len;
873
874 dbuf_set_length (&dbuf, 0);
875 len = strlen (port->processor);
876 upperProc = Safe_malloc (len);
877 for (p1 = port->processor, p2 = upperProc; *p1; ++p1, ++p2)
878 {
879 *p2 = toupper (*p1);
880 }
881 dbuf_append (&dbuf, "-D__SDCC_PIC", sizeof ("-D__SDCC_PIC") - 1);
882 dbuf_append (&dbuf, upperProc, len);
883 addSet (&preArgvSet, dbuf_detach_c_str (&dbuf));
884 }
885 if (!pic16_options.nodefaultlibs)
886 {
887 /* now add the library for the device */
888 dbuf_set_length (&dbuf, 0);
889 dbuf_printf (&dbuf, "libdev%s.lib", pic16->name[1]); /* e.g., libdev18f452.lib */
890 addSet (&libFilesSet, Safe_strdup (dbuf_c_str (&dbuf)));
891
892 /* add the internal SDCC library */
893 addSet (&libFilesSet, Safe_strdup ("libsdcc.lib" ));
894 }
895
896 if (alt_asm && alt_asm[0] != '\0')
897 {
898 pic16_asmCmd[0] = alt_asm;
899 }
900
901 if (alt_link && alt_link[0] != '\0')
902 {
903 pic16_linkCmd[0] = alt_link;
904 }
905
906 if (!pic16_options.no_crt)
907 {
908 pic16_options.omit_ivt = 1;
909 pic16_options.leave_reset = 0;
910 }
911
912 if (options.model == MODEL_SMALL)
913 {
914 addSet (&asmOptionsSet, Safe_strdup ("-DSDCC_MODEL_SMALL"));
915 }
916 else if (options.model == MODEL_LARGE)
917 {
918 char *s, *p;
919
920 addSet (&asmOptionsSet, Safe_strdup ("-DSDCC_MODEL_LARGE"));
921
922 dbuf_printf (&dbuf, "-D%s -D__%s", pic16->name[2], pic16->name[1]);
923 s = Safe_strdup (dbuf_c_str (&dbuf));
924 /* TODO: borut - why only the first 'f' is converted to upper case?
925 * What if there is an other letter instead 'f'?
926 */
927 if (NULL != (p = strrchr (s, 'f')))
928 *p = 'F';
929 addSet (&asmOptionsSet, s);
930 }
931
932 if (STACK_MODEL_LARGE)
933 {
934 addSet (&preArgvSet, Safe_strdup ("-D__STACK_MODEL_LARGE"));
935 addSet (&asmOptionsSet, Safe_strdup ("-D__STACK_MODEL_LARGE"));
936 }
937 else
938 {
939 addSet (&preArgvSet, Safe_strdup ("-D__STACK_MODEL_SMALL"));
940 addSet (&asmOptionsSet, Safe_strdup ("-D__STACK_MODEL_SMALL"));
941 }
942
943 if (!pic16_options.no_warn_non_free && !options.use_non_free)
944 {
945 fprintf(stderr,
946 "WARNING: Command line option --use-non-free not present.\n"
947 " When compiling for PIC14/PIC16, please provide --use-non-free\n"
948 " to get access to device headers and libraries.\n"
949 " If you do not use these, you may provide --no-warn-non-free\n"
950 " to suppress this warning (not recommended).\n");
951 } // if
952
953 dbuf_destroy (&dbuf);
954 }
955
956
957 static void
_pic16_setDefaultOptions(void)958 _pic16_setDefaultOptions (void)
959 {
960 options.stackAuto = 0; /* implicit declaration */
961 /* port is not capable yet to allocate separate registers
962 * dedicated for passing certain parameters */
963
964 /* initialize to defaults section locations, names and addresses */
965 pic16_sectioninfo.at_udata = "udata";
966
967 /* set pic16 port options to defaults */
968 pic16_options.no_banksel = 0;
969 pic16_options.opt_banksel = 0;
970 pic16_options.omit_configw = 0;
971 pic16_options.omit_ivt = 0;
972 pic16_options.leave_reset = 0;
973 pic16_options.stack_model = 0; /* 0 for 'small', 1 for 'large' */
974 pic16_options.ivt_loc = 0x000000;
975 pic16_options.nodefaultlibs = 0;
976 pic16_options.dumpcalltree = 0;
977 pic16_options.crt_name = "crt0iz.o"; /* the default crt to link */
978 pic16_options.no_crt = 0; /* use crt by default */
979 pic16_options.ip_stack = 1; /* set to 1 to enable ipop/ipush for stack */
980 pic16_options.gstack = 0;
981 pic16_options.debgen = 0;
982 pic16_options.no_warn_non_free = 0;
983 }
984
985 static const char *
_pic16_getRegName(const struct reg_info * reg)986 _pic16_getRegName (const struct reg_info *reg)
987 {
988 if (reg)
989 return reg->name;
990 return "err";
991 }
992
993
994 #if 1
995 static const char *
_pic16_mangleFunctionName(const char * sz)996 _pic16_mangleFunctionName (const char *sz)
997 {
998 // fprintf(stderr, "mangled function name: %s\n", sz);
999
1000 return sz;
1001 }
1002 #endif
1003
1004
1005 static void
_pic16_genAssemblerPreamble(FILE * of)1006 _pic16_genAssemblerPreamble (FILE * of)
1007 {
1008 const char *name = pic16_processor_base_name();
1009
1010 if (!name)
1011 {
1012 name = "p18f452";
1013 fprintf(stderr,"WARNING: No Pic has been selected, defaulting to %s\n",name);
1014 }
1015
1016 fprintf (of, "\tlist\tp=%s\n", &name[1]);
1017 fprintf (of, "\tradix\tdec\n");
1018
1019 if (pic16_mplab_comp)
1020 {
1021 // provide ACCESS macro used during SFR accesses
1022 fprintf (of, "\tinclude <p%s.inc>\n", &name[1]);
1023 }
1024
1025 if(!pic16_options.omit_configw) {
1026 pic16_emitConfigRegs(of);
1027 fprintf(of, "\n");
1028 pic16_emitIDRegs(of);
1029 }
1030 }
1031
1032 /* Generate interrupt vector table. */
1033 static int
_pic16_genIVT(struct dbuf_s * oBuf,symbol ** interrupts,int maxInterrupts)1034 _pic16_genIVT (struct dbuf_s * oBuf, symbol ** interrupts, int maxInterrupts)
1035 {
1036 #if 1
1037 /* PIC18F family has only two interrupts, the high and the low
1038 * priority interrupts, which reside at 0x0008 and 0x0018 respectively - VR */
1039
1040 if((!pic16_options.omit_ivt) || (pic16_options.omit_ivt && pic16_options.leave_reset)) {
1041 dbuf_printf(oBuf, "; RESET vector\n");
1042 dbuf_printf(oBuf, "\tgoto\t__sdcc_gsinit_startup\n");
1043 }
1044
1045 if(!pic16_options.omit_ivt) {
1046 dbuf_printf(oBuf, "\tres 4\n");
1047
1048
1049 dbuf_printf(oBuf, "; High priority interrupt vector 0x0008\n");
1050 if(interrupts[1]) {
1051 dbuf_printf(oBuf, "\tgoto\t%s\n", interrupts[1]->rname);
1052 dbuf_printf(oBuf, "\tres\t12\n");
1053 } else {
1054 dbuf_printf(oBuf, "\tretfie\n");
1055 dbuf_printf(oBuf, "\tres\t14\n");
1056 }
1057
1058 dbuf_printf(oBuf, "; Low priority interrupt vector 0x0018\n");
1059 if(interrupts[2]) {
1060 dbuf_printf(oBuf, "\tgoto\t%s\n", interrupts[2]->rname);
1061 } else {
1062 dbuf_printf(oBuf, "\tretfie\n");
1063 }
1064 }
1065 #endif
1066 return TRUE;
1067 }
1068
1069 /* return True if the port can handle the type,
1070 * False to convert it to function call */
1071 static bool
_hasNativeMulFor(iCode * ic,sym_link * left,sym_link * right)1072 _hasNativeMulFor (iCode *ic, sym_link *left, sym_link *right)
1073 {
1074 //fprintf(stderr,"checking for native mult for %c (size: %d)\n", ic->op, getSize(OP_SYMBOL(IC_RESULT(ic))->type));
1075 int symL, symR, symRes, sizeL = 0, sizeR = 0, sizeRes = 0;
1076
1077 /* left/right are symbols? */
1078 symL = IS_SYMOP(IC_LEFT(ic));
1079 symR = IS_SYMOP(IC_RIGHT(ic));
1080 symRes = IS_SYMOP(IC_RESULT(ic));
1081
1082 /* --> then determine their sizes */
1083 sizeL = symL ? getSize(OP_SYM_TYPE(IC_LEFT(ic))) : 4;
1084 sizeR = symR ? getSize(OP_SYM_TYPE(IC_RIGHT(ic))) : 4;
1085 sizeRes = symRes ? getSize(OP_SYM_TYPE(IC_RESULT(ic))) : 4;
1086
1087 /* Checks to enable native multiplication.
1088 * PICs do not offer native division at all...
1089 *
1090 * Ideas:
1091 * ( i) if result is just one byte, use native MUL
1092 * (regardless of the operands)
1093 * ( ii) if left and right are unsigned 8-bit operands,
1094 * use native MUL
1095 * (iii) if left or right is a literal in the range of [-128..256)
1096 * and the other is an unsigned byte, use native MUL
1097 */
1098 if (ic->op == '*')
1099 {
1100 /* use native mult for `*: <?> x <?> --> {u8_t, s8_t}' */
1101 if (sizeRes == 1) { return TRUE; }
1102
1103 /* use native mult for `u8_t x u8_t --> { u16_t, s16_t }' */
1104 if (sizeL == 1 && symL /*&& SPEC_USIGN(OP_SYM_TYPE(IC_LEFT(ic)))*/) {
1105 sizeL = 1;
1106 } else {
1107 //printf( "%s: left too large (%u) / signed (%u)\n", __FUNCTION__, sizeL, symL && !SPEC_USIGN(OP_SYM_TYPE(IC_LEFT(ic))));
1108 sizeL = 4;
1109 }
1110 if (sizeR == 1 && symR /*&& SPEC_USIGN(OP_SYM_TYPE(IC_RIGHT(ic)))*/) {
1111 sizeR = 1;
1112 } else {
1113 //printf( "%s: right too large (%u) / signed (%u)\n", __FUNCTION__, sizeR, symR && !SPEC_USIGN(OP_SYM_TYPE(IC_RIGHT(ic))));
1114 sizeR = 4;
1115 }
1116
1117 /* also allow literals [-128..256) for left/right operands */
1118 if (IS_VALOP(IC_LEFT(ic)))
1119 {
1120 long l = (long) ulFromVal ( OP_VALUE( IC_LEFT(ic) ) );
1121 sizeL = 4;
1122 //printf( "%s: val(left) = %ld\n", __FUNCTION__, l );
1123 if (l >= -128 && l < 256)
1124 {
1125 sizeL = 1;
1126 } else {
1127 //printf( "%s: left value %ld outside [-128..256)\n", __FUNCTION__, l );
1128 }
1129 }
1130 if (IS_VALOP( IC_RIGHT(ic) ))
1131 {
1132 long l = (long) ulFromVal ( OP_VALUE( IC_RIGHT(ic) ) );
1133 sizeR = 4;
1134 //printf( "%s: val(right) = %ld\n", __FUNCTION__, l );
1135 if (l >= -128 && l < 256)
1136 {
1137 sizeR = 1;
1138 } else {
1139 //printf( "%s: right value %ld outside [-128..256)\n", __FUNCTION__, l );
1140 }
1141 }
1142
1143 /* use native mult iff left and right are (unsigned) 8-bit operands */
1144 if (sizeL == 1 && sizeR == 1) { return TRUE; }
1145 }
1146
1147 if (ic->op == '/' || ic->op == '%')
1148 {
1149 /* We must catch /: {u8_t,s8_t} x {u8_t,s8_t} --> {u8_t,s8_t},
1150 * because SDCC will call 'divuchar' even for u8_t / s8_t.
1151 * Example: 128 / -2 becomes 128 / 254 = 0 != -64... */
1152 if (sizeL == 1 && sizeR == 1) return TRUE;
1153
1154 /* What about literals? */
1155 if (IS_VALOP( IC_LEFT(ic) ))
1156 {
1157 long l = (long) ulFromVal ( OP_VALUE( IC_LEFT(ic) ) );
1158 sizeL = 4;
1159 //printf( "%s: val(left) = %ld\n", __FUNCTION__, l );
1160 if (l >= -128 && l < 256)
1161 {
1162 sizeL = 1;
1163 } else {
1164 //printf( "%s: left value %ld outside [-128..256)\n", __FUNCTION__, l );
1165 }
1166 }
1167 if (IS_VALOP( IC_RIGHT(ic) ))
1168 {
1169 long l = (long) ulFromVal ( OP_VALUE( IC_RIGHT(ic) ) );
1170 sizeR = 4;
1171 //printf( "%s: val(right) = %ld\n", __FUNCTION__, l );
1172 if (l >= -128 && l < 256)
1173 {
1174 sizeR = 1;
1175 } else {
1176 //printf( "%s: right value %ld outside [-128..256)\n", __FUNCTION__, l );
1177 }
1178 }
1179 if (sizeL == 1 && sizeR == 1) { return TRUE; }
1180 }
1181
1182 return FALSE;
1183 }
1184
1185
1186 #if 0
1187 /* Do CSE estimation */
1188 static bool cseCostEstimation (iCode *ic, iCode *pdic)
1189 {
1190 // operand *result = IC_RESULT(ic);
1191 // sym_link *result_type = operandType(result);
1192
1193
1194 /* VR -- this is an adhoc. Put here after conversation
1195 * with Erik Epetrich */
1196
1197 if(ic->op == '<'
1198 || ic->op == '>'
1199 || ic->op == EQ_OP) {
1200
1201 fprintf(stderr, "%d %s\n", __LINE__, __FUNCTION__);
1202 return 0;
1203 }
1204
1205 #if 0
1206 /* if it is a pointer then return ok for now */
1207 if (IC_RESULT(ic) && IS_PTR(result_type)) return 1;
1208
1209 /* if bitwise | add & subtract then no since mcs51 is pretty good at it
1210 so we will cse only if they are local (i.e. both ic & pdic belong to
1211 the same basic block */
1212 if (IS_BITWISE_OP(ic) || ic->op == '+' || ic->op == '-') {
1213 /* then if they are the same Basic block then ok */
1214 if (ic->eBBlockNum == pdic->eBBlockNum) return 1;
1215 else return 0;
1216 }
1217 #endif
1218
1219 /* for others it is cheaper to do the cse */
1220 return 1;
1221 }
1222 #endif
1223
1224
1225 /* Indicate which extended bit operations this port supports */
1226 static bool
hasExtBitOp(int op,int size)1227 hasExtBitOp (int op, int size)
1228 {
1229 if (op == RRC
1230 || op == RLC
1231 || op == GETABIT
1232 /* || op == GETHBIT */ /* GETHBIT doesn't look complete for PIC */
1233 )
1234 return TRUE;
1235 else
1236 return FALSE;
1237 }
1238
1239 /* Indicate the expense of an access to an output storage class */
1240 static int
oclsExpense(struct memmap * oclass)1241 oclsExpense (struct memmap *oclass)
1242 {
1243 /* The IN_FARSPACE test is compatible with historical behaviour, */
1244 /* but I don't think it is applicable to PIC. If so, please feel */
1245 /* free to remove this test -- EEP */
1246 if (IN_FARSPACE(oclass))
1247 return 1;
1248
1249 return 0;
1250 }
1251
1252 /** $1 is the input object file (PIC16 specific) // >>always the basename<<.
1253 $2 is always the output file.
1254 $3 -L path and -l libraries
1255 $l is the list of extra options that should be there somewhere...
1256 MUST be terminated with a NULL.
1257 */
1258 const char *pic16_linkCmd[] =
1259 {
1260 "gplink", "$l", "-w", "-r", "-o", "$2", "$1","$3", NULL
1261 };
1262
1263 /** $1 is always the basename.
1264 $2 is always the output file.
1265 $3 varies (nothing currently)
1266 $l is the list of extra options that should be there somewhere...
1267 MUST be terminated with a NULL.
1268 */
1269 const char *pic16_asmCmd[] =
1270 {
1271 "gpasm", "$l", "$3", "-o", "$2", "-c", "$1.asm", NULL
1272 };
1273
1274 /* Globals */
1275 PORT pic16_port =
1276 {
1277 TARGET_ID_PIC16,
1278 "pic16",
1279 "MCU PIC16", /* Target name */
1280 "18f452", /* Processor */
1281 {
1282 pic16glue,
1283 TRUE, /* Emit glue around main */
1284 NO_MODEL,
1285 NO_MODEL,
1286 NULL, /* model == target */
1287 },
1288 {
1289 pic16_asmCmd, /* assembler command and arguments */
1290 NULL, /* alternate macro based form */
1291 "-g", /* arguments for debug mode */
1292 NULL, /* arguments for normal mode */
1293 0, /* print externs as global */
1294 ".asm", /* assembler file extension */
1295 NULL /* no do_assemble function */
1296 },
1297 {
1298 NULL, // pic16_linkCmd, /* linker command and arguments */
1299 NULL, /* alternate macro based form */
1300 _pic16_linkEdit, //NULL, /* no do_link function */
1301 ".o", /* extension for object files */
1302 0 /* no need for linker file */
1303 },
1304 { /* Peephole optimizer */
1305 _defaultRules
1306 },
1307 {
1308 /* Sizes */
1309 1, /* char */
1310 2, /* short */
1311 2, /* int */
1312 4, /* long */
1313 8, /* long long */
1314 2, /* near ptr */
1315 3, /* far ptr, far pointers (see Microchip) */
1316 3, /* gptr */
1317 2, /* func ptr */
1318 3, /* banked func ptr */
1319 1, /* bit */
1320 4, /* float */
1321 },
1322
1323 /* generic pointer tags */
1324 {
1325 0x00, /* far */
1326 0x80, /* near */
1327 0x00, /* xstack */
1328 0x00 /* code */
1329 },
1330
1331 {
1332 "XSEG (XDATA)", // xstack
1333 "STACK (DATA)", // istack
1334 "CSEG (CODE)", // code
1335 "DSEG (DATA)", // data
1336 "ISEG (DATA)", // idata
1337 "PSEG (DATA)", // pdata
1338 "XSEG (XDATA)", // xdata
1339 "BSEG (BIT)", // bit
1340 "RSEG (DATA)", // reg
1341 "GSINIT (CODE)", // static
1342 "OSEG (OVR,DATA)", // overlay
1343 "GSFINAL (CODE)", // post static
1344 "HOME (CODE)", // home
1345 NULL, // xidata
1346 NULL, // xinit
1347 "CONST (CODE)", // const_name - const data (code or not)
1348 "CABS (ABS,CODE)", // cabs_name - const absolute data (code or not)
1349 "XABS (ABS,XDATA)", // xabs_name - absolute xdata
1350 "IABS (ABS,DATA)", // iabs_name - absolute data
1351 NULL, // name of segment for initialized variables
1352 NULL, // name of segment for copies of initialized variables in code space
1353 NULL, // default location for auto vars
1354 NULL, // default location for global vars
1355 1, // code is read only 1=yes
1356 1 // No fancy alignments supported.
1357 },
1358 {
1359 NULL, /* genExtraAreaDeclaration */
1360 NULL /* genExatrAreaLinkOptions */
1361 },
1362 {
1363 /* stack related information */
1364 -1, /* -1 stack grows downwards, +1 upwards */
1365 1, /* extra overhead when calling between banks */
1366 4, /* extra overhead when the function is an ISR */
1367 1, /* extra overhead for a function call */
1368 1, /* re-entrant space */
1369 0, /* 'banked' call overhead, mild overlap with bank_overhead */
1370 1 /* sp is offset by 1 from last item pushed */
1371 },
1372 {
1373 -1, FALSE
1374 },
1375 {
1376 pic16_emitDebuggerSymbol
1377 },
1378 {
1379 255/3, /* maxCount */
1380 3, /* sizeofElement */
1381 /* The rest of these costs are bogus. They approximate */
1382 /* the behavior of src/SDCCicode.c 1.207 and earlier. */
1383 {4,4,4}, /* sizeofMatchJump[] */
1384 {0,0,0}, /* sizeofRangeCompare[] */
1385 0, /* sizeofSubtract */
1386 3, /* sizeofDispatch */
1387 },
1388 "_",
1389 _pic16_init,
1390 _pic16_parseOptions,
1391 pic16_optionsTable,
1392 _pic16_initPaths,
1393 _pic16_finaliseOptions,
1394 _pic16_setDefaultOptions,
1395 pic16_assignRegisters,
1396 _pic16_getRegName,
1397 0,
1398 NULL,
1399 _pic16_keywords,
1400 _pic16_genAssemblerPreamble,
1401 NULL, /* no genAssemblerEnd */
1402 _pic16_genIVT,
1403 NULL, // _pic16_genXINIT
1404 NULL, /* genInitStartup */
1405 _pic16_reset_regparm,
1406 _pic16_regparm,
1407 _process_pragma, /* process a pragma */
1408 _pic16_mangleFunctionName, /* mangles function name */
1409 _hasNativeMulFor,
1410 hasExtBitOp, /* hasExtBitOp */
1411 oclsExpense, /* oclsExpense */
1412 FALSE,
1413 TRUE, /* little endian */
1414 0, /* leave lt */
1415 0, /* leave gt */
1416 1, /* transform <= to ! > */
1417 1, /* transform >= to ! < */
1418 1, /* transform != to !(a == b) */
1419 0, /* leave == */
1420 FALSE, /* No array initializer support. */
1421 0, //cseCostEstimation, /* !!!no CSE cost estimation yet */
1422 NULL, /* no builtin functions */
1423 GPOINTER, /* treat unqualified pointers as "generic" pointers */
1424 1, /* reset labelKey to 1 */
1425 1, /* globals & local static allowed */
1426 0, /* Number of registers handled in the tree-decomposition-based register allocator in SDCCralloc.hpp */
1427 PORT_MAGIC
1428 };
1429