1 /*-------------------------------------------------------------------------
2 SDCCsymt.c - Code file for Symbols table related structures and MACRO's.
3 Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU General Public License as published by the
7 Free Software Foundation; either version 2, or (at your option) any
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 In other words, you are welcome to use, share and improve this program.
20 You are forbidden to forbid anyone else to use, share and improve
21 what you give them. Help stamp out software-hoarding!
22 -------------------------------------------------------------------------*/
27 value *aggregateToPointer (value *val);
28 void printTypeChainRaw (sym_link * start, FILE * of);
30 void printFromToType(sym_link *from, sym_link *to) {
31 fprintf (stderr, "from type '");
32 printTypeChain (from, stderr);
33 fprintf (stderr, "'\nto type '");
34 printTypeChain (to, stderr);
35 fprintf (stderr, "'\n");
39 char *nounName(sym_link *sl) {
40 switch (SPEC_NOUN(sl))
43 if (SPEC_LONG(sl)) return "long";
44 if (sl->select.s._short) return "short";
47 case V_FLOAT: return "float";
48 case V_CHAR: return "char";
49 case V_VOID: return "void";
50 case V_STRUCT: return "struct";
51 case V_LABEL: return "label";
52 case V_BITFIELD: return "bitfield";
53 case V_BIT: return "bit";
54 case V_SBIT: return "sbit";
55 case V_DOUBLE: return "double";
60 bucket *SymbolTab[256]; /* the symbol table */
61 bucket *StructTab[256]; /* the structure table */
62 bucket *TypedefTab[256]; /* the typedef table */
63 bucket *LabelTab[256]; /* the Label table */
64 bucket *enumTab[256]; /* enumerated table */
66 /*------------------------------------------------------------------*/
67 /* initSymt () - initialises symbol table related stuff */
68 /*------------------------------------------------------------------*/
74 for (i = 0; i < 256; i++)
75 SymbolTab[i] = StructTab[i] = (void *) NULL;
79 /*-----------------------------------------------------------------*/
80 /* newBucket - allocates & returns a new bucket */
81 /*-----------------------------------------------------------------*/
87 bp = Safe_alloc ( sizeof (bucket));
92 /*-----------------------------------------------------------------*/
93 /* hashKey - computes the hashkey given a symbol name */
94 /*-----------------------------------------------------------------*/
96 hashKey (const char *s)
98 unsigned long key = 0;
105 /*-----------------------------------------------------------------*/
106 /* addSym - adds a symbol to the hash Table */
107 /*-----------------------------------------------------------------*/
109 addSym (bucket ** stab,
116 int i; /* index into the hash Table */
117 bucket *bp; /* temp bucket * */
120 symbol *csym = (symbol *)sym;
122 if (getenv("DEBUG_SANITY")) {
123 fprintf (stderr, "addSym: %s ", sname);
125 /* make sure the type is complete and sane */
126 checkTypeSanity(csym->etype, csym->name);
129 /* prevent overflow of the (r)name buffers */
130 if (strlen(sname)>SDCC_SYMNAME_MAX) {
131 werror (W_SYMBOL_NAME_TOO_LONG, SDCC_SYMNAME_MAX);
132 sname[SDCC_SYMNAME_MAX]='\0';
135 /* the symbols are always added at the head of the list */
137 /* get a free entry */
138 bp = Safe_alloc ( sizeof (bucket));
140 bp->sym = sym; /* update the symbol pointer */
141 bp->level = level; /* update the nest level */
143 strncpyz (bp->name, sname, sizeof(bp->name)); /* copy the name into place */
145 /* if this is the first entry */
148 bp->prev = bp->next = (void *) NULL; /* point to nothing */
151 /* not first entry then add @ head of list */
161 /*-----------------------------------------------------------------*/
162 /* deleteSym - deletes a symbol from the hash Table entry */
163 /*-----------------------------------------------------------------*/
165 deleteSym (bucket ** stab, void *sym, char *sname)
173 /* find the symbol */
176 if (bp->sym == sym) /* found it then break out */
177 break; /* of the loop */
181 if (!bp) /* did not find it */
183 /* if this is the first one in the chain */
187 if (stab[i]) /* if chain ! empty */
188 stab[i]->prev = (void *) NULL;
190 /* middle || end of chain */
193 if (bp->next) /* if not end of chain */
194 bp->next->prev = bp->prev;
196 bp->prev->next = bp->next;
201 /*-----------------------------------------------------------------*/
202 /* findSym - finds a symbol in a table */
203 /*-----------------------------------------------------------------*/
205 findSym (bucket ** stab, void *sym, const char *sname)
209 bp = stab[hashKey (sname)];
212 if (bp->sym == sym || strcmp (bp->name, sname) == 0)
217 return (bp ? bp->sym : (void *) NULL);
220 /*-----------------------------------------------------------------*/
221 /* findSymWithLevel - finds a symbol with a name & level */
222 /*-----------------------------------------------------------------*/
224 findSymWithLevel (bucket ** stab, symbol * sym)
228 bp = stab[hashKey (sym->name)];
231 ** do the search from the head of the list since the
232 ** elements are added at the head it is ensured that
233 ** we will find the deeper definitions before we find
234 ** the global ones. we need to check for symbols with
235 ** level <= to the level given, if levels match then block
236 ** numbers need to match as well
240 if (strcmp (bp->name, sym->name) == 0 && bp->level <= sym->level)
242 /* if this is parameter then nothing else need to be checked */
243 if (((symbol *) (bp->sym))->_isparm)
245 /* if levels match then block numbers should also match */
246 if (bp->level && bp->level == sym->level && bp->block == sym->block)
248 /* if levels don't match then we are okay */
249 if (bp->level && bp->level != sym->level && bp->block <= sym->block)
251 /* if this is a global variable then we are ok too */
259 return (void *) NULL;
262 /*-----------------------------------------------------------------*/
263 /* findSymWithBlock - finds a symbol with name in with a block */
264 /*-----------------------------------------------------------------*/
266 findSymWithBlock (bucket ** stab, symbol * sym, int block)
270 bp = stab[hashKey (sym->name)];
273 if (strcmp (bp->name, sym->name) == 0 &&
279 return (bp ? bp->sym : (void *) NULL);
282 /*------------------------------------------------------------------*/
283 /* newSymbol () - returns a new pointer to a symbol */
284 /*------------------------------------------------------------------*/
286 newSymbol (char *name, int scope)
290 sym = Safe_alloc ( sizeof (symbol));
292 strncpyz (sym->name, name, sizeof(sym->name)); /* copy the name */
293 sym->level = scope; /* set the level */
294 sym->block = currBlockno;
295 sym->lineDef = mylineno; /* set the line number */
296 sym->fileDef = currFname;
300 /*------------------------------------------------------------------*/
301 /* newLink - creates a new link (declarator,specifier) */
302 /*------------------------------------------------------------------*/
304 newLink (SYM_LINK_CLASS select)
308 p = Safe_alloc ( sizeof (sym_link));
314 /*------------------------------------------------------------------*/
315 /* newStruct - creats a new structdef from the free list */
316 /*------------------------------------------------------------------*/
318 newStruct (char *tag)
322 s = Safe_alloc ( sizeof (structdef));
324 strncpyz (s->tag, tag, sizeof(s->tag)); /* copy the tag */
328 /*------------------------------------------------------------------*/
329 /* sclsFromPtr - Return the storage class a pointer points into. */
330 /* S_FIXED is returned for generic pointers or other */
331 /* unexpected cases */
332 /*------------------------------------------------------------------*/
334 sclsFromPtr(sym_link *ptr)
336 switch (DCL_TYPE (ptr))
359 /*------------------------------------------------------------------*/
360 /* pointerTypes - do the computation for the pointer types */
361 /*------------------------------------------------------------------*/
363 pointerTypes (sym_link * ptr, sym_link * type)
368 /* find the first pointer type */
369 while (ptr && !IS_PTR (ptr))
372 /* could not find it */
373 if (!ptr || IS_SPEC (ptr))
376 if (IS_PTR(ptr) && DCL_TYPE(ptr)!=UPOINTER) {
377 pointerTypes (ptr->next, type);
381 /* change the pointer type depending on the
382 storage class of the type */
385 switch (SPEC_SCLS (type))
388 DCL_TYPE (ptr) = FPOINTER;
391 DCL_TYPE (ptr) = IPOINTER;
394 DCL_TYPE (ptr) = PPOINTER;
397 DCL_TYPE (ptr) = POINTER;
400 DCL_TYPE (ptr) = CPOINTER;
403 DCL_TYPE (ptr) = EEPPOINTER;
406 DCL_TYPE (ptr) = port->unqualified_pointer;
409 /* the storage class of type ends here */
410 SPEC_SCLS (type) = 0;
413 /* now change all the remaining unknown pointers
414 to generic pointers */
417 if (!IS_SPEC (ptr) && DCL_TYPE (ptr) == UPOINTER)
418 DCL_TYPE (ptr) = port->unqualified_pointer;
422 /* same for the type although it is highly unlikely that
423 type will have a pointer */
426 if (!IS_SPEC (type) && DCL_TYPE (type) == UPOINTER)
427 DCL_TYPE (type) = port->unqualified_pointer;
432 /*------------------------------------------------------------------*/
433 /* addDecl - adds a declarator @ the end of a chain */
434 /*------------------------------------------------------------------*/
436 addDecl (symbol * sym, int type, sym_link * p)
442 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
443 fprintf (stderr, "SDCCsymt.c:addDecl(%s,%d,%p)\n", sym->name, type, p);
445 /* if we are passed a link then set head & tail */
454 head = tail = newLink (DECLARATOR);
455 DCL_TYPE (head) = type;
458 /* if this is the first entry */
466 if (IS_SPEC (sym->etype) && IS_SPEC (head) && head == tail)
468 sym->etype = mergeSpec (sym->etype, head, sym->name);
472 if (IS_SPEC (sym->etype) && !IS_SPEC (head) && head == tail)
475 while (t->next != sym->etype)
478 tail->next = sym->etype;
482 sym->etype->next = head;
488 /* if the type is an unknown pointer and has
489 a tspec then take the storage class const & volatile
490 attribute from the tspec & make it those of this
494 //DCL_TYPE (p) == UPOINTER &&
497 if (!IS_SPEC (sym->etype))
499 sym->etype = sym->etype->next = newLink (SPECIFIER);
501 SPEC_SCLS (sym->etype) = SPEC_SCLS (DCL_TSPEC (p));
502 DCL_TSPEC (p) = NULL;
505 // if there is a function in this type chain
506 if (p && funcInChain(sym->type)) {
507 processFuncArgs (sym);
513 /*------------------------------------------------------------------
514 checkTypeSanity: prevent the user from doing e.g.:
516 ------------------------------------------------------------------*/
517 void checkTypeSanity(sym_link *etype, char *name) {
521 if (getenv("DEBUG_SANITY")) {
522 fprintf (stderr, "sanity check skipped for %s (etype==0)\n", name);
527 if (!IS_SPEC(etype)) {
528 if (getenv("DEBUG_SANITY")) {
529 fprintf (stderr, "sanity check skipped for %s (!IS_SPEC)\n", name);
534 noun=nounName(etype);
536 if (getenv("DEBUG_SANITY")) {
537 fprintf (stderr, "checking sanity for %s %p\n", name, etype);
540 if ((SPEC_NOUN(etype)==V_CHAR ||
541 SPEC_NOUN(etype)==V_FLOAT ||
542 SPEC_NOUN(etype)==V_DOUBLE ||
543 SPEC_NOUN(etype)==V_VOID) &&
544 (etype->select.s._short || SPEC_LONG(etype))) {
545 // long or short for char float double or void
546 werror (E_LONG_OR_SHORT_INVALID, noun, name);
548 if ((SPEC_NOUN(etype)==V_FLOAT ||
549 SPEC_NOUN(etype)==V_DOUBLE ||
550 SPEC_NOUN(etype)==V_VOID) &&
551 (etype->select.s._signed || SPEC_USIGN(etype))) {
552 // signed or unsigned for float double or void
553 werror (E_SIGNED_OR_UNSIGNED_INVALID, noun, name);
556 // special case for "short"
557 if (etype->select.s._short) {
558 SPEC_NOUN(etype) = options.shortis8bits ? V_CHAR : V_INT;
559 etype->select.s._short = 0;
563 "const a;" or "data b;" or "signed s" or "long l"
565 if (!SPEC_NOUN(etype)) {
566 SPEC_NOUN(etype)=V_INT;
569 if (etype->select.s._signed && SPEC_USIGN(etype)) {
570 // signed AND unsigned
571 werror (E_SIGNED_AND_UNSIGNED_INVALID, noun, name);
573 if (etype->select.s._short && SPEC_LONG(etype)) {
575 werror (E_LONG_AND_SHORT_INVALID, noun, name);
580 /*------------------------------------------------------------------*/
581 /* mergeSpec - merges two specifiers and returns the new one */
582 /*------------------------------------------------------------------*/
584 mergeSpec (sym_link * dest, sym_link * src, char *name)
586 if (!IS_SPEC(dest) || !IS_SPEC(src)) {
588 werror (E_INTERNAL_ERROR, __FILE__, __LINE__, "cannot merge declarator");
591 werror (E_SYNTAX_ERROR, yytext);
592 // the show must go on
597 if (SPEC_NOUN(src)) {
598 if (!SPEC_NOUN(dest)) {
599 SPEC_NOUN(dest)=SPEC_NOUN(src);
601 /* we shouldn't redeclare the type */
602 if (getenv("DEBUG_SANITY")) {
603 fprintf (stderr, "mergeSpec: ");
605 werror(E_TWO_OR_MORE_DATA_TYPES, name);
609 if (SPEC_SCLS(src)) {
610 /* if destination has no storage class */
611 if (!SPEC_SCLS (dest) || SPEC_SCLS(dest)==S_REGISTER) {
612 SPEC_SCLS (dest) = SPEC_SCLS (src);
614 if (getenv("DEBUG_SANITY")) {
615 fprintf (stderr, "mergeSpec: ");
617 werror(E_TWO_OR_MORE_STORAGE_CLASSES, name);
621 /* copy all the specifications */
623 // we really should do:
625 if (SPEC_what(src)) {
626 if (SPEC_what(dest)) {
627 werror(W_DUPLICATE_SPEC, "what");
629 SPEC_what(dst)|=SPEC_what(src);
632 // but there are more important thing right now
634 SPEC_LONG (dest) |= SPEC_LONG (src);
635 dest->select.s._short|=src->select.s._short;
636 SPEC_USIGN (dest) |= SPEC_USIGN (src);
637 dest->select.s._signed|=src->select.s._signed;
638 SPEC_STAT (dest) |= SPEC_STAT (src);
639 SPEC_EXTR (dest) |= SPEC_EXTR (src);
640 SPEC_CONST(dest) |= SPEC_CONST (src);
641 SPEC_ABSA (dest) |= SPEC_ABSA (src);
642 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
643 SPEC_ADDR (dest) |= SPEC_ADDR (src);
644 SPEC_OCLS (dest) = SPEC_OCLS (src);
645 SPEC_BLEN (dest) |= SPEC_BLEN (src);
646 SPEC_BSTR (dest) |= SPEC_BSTR (src);
647 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
648 SPEC_ENUM (dest) |= SPEC_ENUM (src);
649 if (SPEC_ARGREG(src) && !SPEC_ARGREG(dest))
650 SPEC_ARGREG(dest) = SPEC_ARGREG(src);
652 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
653 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
655 /* these are the only function attributes that will be set
656 in a specifier while parsing */
657 FUNC_NONBANKED(dest) |= FUNC_NONBANKED(src);
658 FUNC_BANKED(dest) |= FUNC_BANKED(src);
659 FUNC_ISCRITICAL(dest) |= FUNC_ISCRITICAL(src);
660 FUNC_ISREENT(dest) |= FUNC_ISREENT(src);
661 FUNC_ISNAKED(dest) |= FUNC_ISNAKED(src);
662 FUNC_ISISR(dest) |= FUNC_ISISR(src);
663 FUNC_ISJAVANATIVE(dest) |= FUNC_ISJAVANATIVE(src);
664 FUNC_ISBUILTIN(dest) |= FUNC_ISBUILTIN(src);
665 FUNC_ISOVERLAY(dest) |= FUNC_ISOVERLAY(src);
666 FUNC_INTNO(dest) |= FUNC_INTNO(src);
667 FUNC_REGBANK(dest) |= FUNC_REGBANK(src);
672 /*------------------------------------------------------------------*/
673 /* genSymName - generates and returns a name used for anonymous vars */
674 /*------------------------------------------------------------------*/
676 genSymName (int level)
678 static int gCount = 0;
679 static char gname[SDCC_NAME_MAX + 1];
681 SNPRINTF (gname, sizeof(gname), "__%04d%04d", level, gCount++);
685 /*------------------------------------------------------------------*/
686 /* getSpec - returns the specifier part from a declaration chain */
687 /*------------------------------------------------------------------*/
689 getSpec (sym_link * p)
694 while (p && !(IS_SPEC (p)))
700 /*------------------------------------------------------------------*/
701 /* newCharLink() - creates an char type */
702 /*------------------------------------------------------------------*/
708 p = newLink (SPECIFIER);
709 SPEC_NOUN (p) = V_CHAR;
714 /*------------------------------------------------------------------*/
715 /* newFloatLink - a new Float type */
716 /*------------------------------------------------------------------*/
722 p = newLink (SPECIFIER);
723 SPEC_NOUN (p) = V_FLOAT;
728 /*------------------------------------------------------------------*/
729 /* newLongLink() - new long type */
730 /*------------------------------------------------------------------*/
736 p = newLink (SPECIFIER);
737 SPEC_NOUN (p) = V_INT;
743 /*------------------------------------------------------------------*/
744 /* newIntLink() - creates an int type */
745 /*------------------------------------------------------------------*/
751 p = newLink (SPECIFIER);
752 SPEC_NOUN (p) = V_INT;
757 /*------------------------------------------------------------------*/
758 /* getSize - returns size of a type chain in bits */
759 /*------------------------------------------------------------------*/
761 getSize (sym_link * p)
763 /* if nothing return 0 */
767 { /* if this is the specifier then */
768 switch (SPEC_NOUN (p))
769 { /* depending on the specifier type */
771 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
779 return SPEC_STRUCT (p)->size;
786 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
792 /* this is a specifier */
793 switch (DCL_TYPE (p))
797 return DCL_ELEM (p) * getSize (p->next);
799 // werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
800 // "can not tell the size of an array[]");
820 /*------------------------------------------------------------------*/
821 /* bitsForType - returns # of bits required to store this type */
822 /*------------------------------------------------------------------*/
824 bitsForType (sym_link * p)
826 /* if nothing return 0 */
831 { /* if this is the specifier then */
833 switch (SPEC_NOUN (p))
834 { /* depending on the specifier type */
836 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
838 return FLOATSIZE * 8;
844 return SPEC_STRUCT (p)->size * 8;
851 return SPEC_BLEN (p);
857 /* this is a specifier */
858 switch (DCL_TYPE (p))
861 return DCL_ELEM (p) * getSize (p->next) * 8;
865 return (PTRSIZE * 8);
870 return (FPTRSIZE * 8);
872 return (GPTRSIZE * 8);
879 /*------------------------------------------------------------------*/
880 /* copySymbolChain - copies a symbol chain */
881 /*------------------------------------------------------------------*/
883 copySymbolChain (symbol * src)
890 dest = copySymbol (src);
891 dest->next = copySymbolChain (src->next);
895 /*------------------------------------------------------------------*/
896 /* copySymbol - makes a copy of a symbol */
897 /*------------------------------------------------------------------*/
899 copySymbol (symbol * src)
906 dest = newSymbol (src->name, src->level);
907 memcpy (dest, src, sizeof (symbol));
908 dest->level = src->level;
909 dest->block = src->block;
910 dest->ival = copyIlist (src->ival);
911 dest->type = copyLinkChain (src->type);
912 dest->etype = getSpec (dest->type);
914 dest->key = src->key;
915 dest->allocreq = src->allocreq;
919 /*------------------------------------------------------------------*/
920 /* reverseSyms - reverses the links for a symbol chain */
921 /*------------------------------------------------------------------*/
923 reverseSyms (symbol * sym)
925 symbol *prev, *curr, *next;
940 sym->next = (void *) NULL;
944 /*------------------------------------------------------------------*/
945 /* reverseLink - reverses the links for a type chain */
946 /*------------------------------------------------------------------*/
948 reverseLink (sym_link * type)
950 sym_link *prev, *curr, *next;
965 type->next = (void *) NULL;
969 /*------------------------------------------------------------------*/
970 /* addSymChain - adds a symbol chain to the symboltable */
971 /*------------------------------------------------------------------*/
973 addSymChain (symbol * symHead)
975 symbol *sym = symHead;
979 for (; sym != NULL; sym = sym->next)
982 checkTypeSanity(sym->etype, sym->name);
984 if (!sym->level && !(IS_SPEC(sym->etype) && IS_TYPEDEF(sym->etype)))
987 /* if already exists in the symbol table then check if
988 one of them is an extern definition if yes then
989 then check if the type match, if the types match then
990 delete the current entry and add the new entry */
991 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
992 csym->level == sym->level) {
994 /* If the previous definition was for an array with incomplete */
995 /* type, and the new definition has completed the type, update */
996 /* the original type to match */
997 if (IS_DECL(csym->type) && DCL_TYPE(csym->type)==ARRAY
998 && IS_DECL(sym->type) && DCL_TYPE(sym->type)==ARRAY)
1000 if (!DCL_ELEM(csym->type) && DCL_ELEM(sym->type))
1001 DCL_ELEM(csym->type) = DCL_ELEM(sym->type);
1005 /* If only one of the definitions used the "at" keyword, copy */
1006 /* the address to the other. */
1007 if (IS_SPEC(csym->etype) && SPEC_ABSA(csym->etype)
1008 && IS_SPEC(sym->etype) && !SPEC_ABSA(sym->etype))
1010 SPEC_ABSA (sym->etype) = 1;
1011 SPEC_ADDR (sym->etype) = SPEC_ADDR (csym->etype);
1013 if (IS_SPEC(csym->etype) && !SPEC_ABSA(csym->etype)
1014 && IS_SPEC(sym->etype) && SPEC_ABSA(sym->etype))
1016 SPEC_ABSA (csym->etype) = 1;
1017 SPEC_ADDR (csym->etype) = SPEC_ADDR (sym->etype);
1022 if (csym->ival && sym->ival)
1024 if (compareTypeExact (csym->type, sym->type, sym->level) != 1)
1028 /* one definition extern ? */
1029 if (IS_EXTERN (csym->etype) || IS_EXTERN (sym->etype))
1030 werror (E_EXTERN_MISMATCH, sym->name);
1032 werror (E_DUPLICATE, sym->name);
1033 fprintf (stderr, "from type '");
1034 printTypeChain (csym->type, stderr);
1035 if (IS_SPEC (csym->etype) && SPEC_ABSA (csym->etype))
1036 fprintf(stderr, " at 0x%x", SPEC_ADDR (csym->etype));
1037 fprintf (stderr, "'\nto type '");
1038 printTypeChain (sym->type, stderr);
1039 if (IS_SPEC (sym->etype) && SPEC_ABSA (sym->etype))
1040 fprintf(stderr, " at 0x%x", SPEC_ADDR (sym->etype));
1041 fprintf (stderr, "'\n");
1045 if (csym->ival && !sym->ival)
1046 sym->ival = csym->ival;
1048 /* delete current entry */
1049 deleteSym (SymbolTab, csym, csym->name);
1050 deleteFromSeg(csym);
1054 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1059 /*------------------------------------------------------------------*/
1060 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
1061 /*------------------------------------------------------------------*/
1063 funcInChain (sym_link * lnk)
1074 /*------------------------------------------------------------------*/
1075 /* structElemType - returns the type info of a struct member */
1076 /*------------------------------------------------------------------*/
1078 structElemType (sym_link * stype, value * id)
1080 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
1081 sym_link *type, *etype;
1082 sym_link *petype = getSpec (stype);
1086 /* look for the id */
1089 if (strcmp (fields->rname, id->name) == 0)
1091 type = copyLinkChain (fields->type);
1092 etype = getSpec (type);
1093 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1094 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1096 SPEC_CONST (type) |= SPEC_CONST (stype);
1098 DCL_PTR_CONST (type) |= SPEC_CONST (stype);
1101 fields = fields->next;
1105 werror (E_NOT_MEMBER, id->name);
1107 // the show must go on
1108 return newIntLink();
1111 /*------------------------------------------------------------------*/
1112 /* getStructElement - returns element of a tructure definition */
1113 /*------------------------------------------------------------------*/
1115 getStructElement (structdef * sdef, symbol * sym)
1119 for (field = sdef->fields; field; field = field->next)
1120 if (strcmp (field->name, sym->name) == 0)
1123 werror (E_NOT_MEMBER, sym->name);
1125 return sdef->fields;
1128 /*------------------------------------------------------------------*/
1129 /* compStructSize - computes the size of a structure */
1130 /*------------------------------------------------------------------*/
1132 compStructSize (int su, structdef * sdef)
1134 int sum = 0, usum = 0;
1138 /* for the identifiers */
1139 loop = sdef->fields;
1142 /* create the internal name for this variable */
1143 SNPRINTF (loop->rname, sizeof(loop->rname), "_%s", loop->name);
1148 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1150 /* if this is a bit field */
1153 /* change it to a unsigned bit */
1154 SPEC_NOUN (loop->etype) = V_BITFIELD;
1155 SPEC_USIGN (loop->etype) = 1;
1156 SPEC_BLEN (loop->etype) = loop->bitVar;
1158 if (loop->bitVar == BITVAR_PAD) {
1159 /* A zero length bitfield forces padding */
1160 SPEC_BSTR (loop->etype) = bitOffset;
1161 SPEC_BLEN (loop->etype) = 0;
1166 if (bitOffset == 8) {
1170 /* check if this fit into the remaining */
1171 /* bits of this byte else align it to the */
1172 /* next byte boundary */
1173 if (loop->bitVar <= (8 - bitOffset)) {
1174 /* fits into current byte */
1176 SPEC_BSTR (loop->etype) = bitOffset;
1177 bitOffset += loop->bitVar;
1179 else if (!bitOffset) {
1180 /* does not fit, but is already byte aligned */
1182 SPEC_BSTR (loop->etype) = bitOffset;
1183 bitOffset += loop->bitVar;
1186 /* does not fit; need to realign first */
1188 loop->offset = (su == UNION ? sum = 0 : sum);
1190 SPEC_BSTR (loop->etype) = bitOffset;
1191 bitOffset += loop->bitVar;
1193 while (bitOffset>8) {
1200 /* This is a non-bit field. Make sure we are */
1201 /* byte aligned first */
1204 loop->offset = (su == UNION ? sum = 0 : sum);
1208 checkDecl (loop, 1);
1209 sum += getSize (loop->type);
1214 /* if union then size = sizeof larget field */
1216 /* For UNION, round up after each field */
1217 sum += ((bitOffset+7)/8);
1218 usum = max (usum, sum);
1223 /* For STRUCT, round up after all fields processed */
1225 sum += ((bitOffset+7)/8);
1227 return (su == UNION ? usum : sum);
1230 /*------------------------------------------------------------------*/
1231 /* checkSClass - check the storage class specification */
1232 /*------------------------------------------------------------------*/
1234 checkSClass (symbol * sym, int isProto)
1238 if (getenv("DEBUG_SANITY")) {
1239 fprintf (stderr, "checkSClass: %s \n", sym->name);
1242 /* type is literal can happen for enums change
1244 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1245 SPEC_SCLS (sym->etype) = S_AUTO;
1247 /* if sfr or sbit then must also be volatile */
1248 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1249 SPEC_SCLS (sym->etype) == S_SFR)
1251 SPEC_VOLATILE (sym->etype) = 1;
1254 /* if absolute address given then it mark it as
1255 volatile -- except in the PIC port */
1257 #if !OPT_DISABLE_PIC || !OPT_DISABLE_PIC16
1258 /* The PIC port uses a different peep hole optimizer based on "pCode" */
1259 if (!TARGET_IS_PIC && !TARGET_IS_PIC16)
1262 if (IS_ABSOLUTE (sym->etype))
1263 SPEC_VOLATILE (sym->etype) = 1;
1265 /* If code memory is read only, then pointers to code memory */
1266 /* implicitly point to constants -- make this explicit */
1268 while (t && t->next) {
1269 if (IS_CODEPTR(t) && port->mem.code_ro) {
1270 if (IS_SPEC(t->next)) {
1271 SPEC_CONST (t->next) = 1;
1273 DCL_PTR_CONST (t->next) = 1;
1279 /* global variables declared const put into code */
1280 /* if no other storage class specified */
1281 if (sym->level == 0 &&
1282 SPEC_SCLS(sym->etype) == S_FIXED &&
1283 !IS_FUNC(sym->type)) {
1284 /* find the first non-array link */
1288 if (IS_CONSTANT (t)) {
1289 SPEC_SCLS (sym->etype) = S_CODE;
1293 /* global variable in code space is a constant */
1294 if (sym->level == 0 &&
1295 SPEC_SCLS (sym->etype) == S_CODE &&
1296 port->mem.code_ro) {
1297 /* find the first non-array link */
1304 DCL_PTR_CONST (t) = 1;
1308 /* if bit variable then no storage class can be */
1309 /* specified since bit is already a storage */
1310 if (IS_BITVAR (sym->etype) &&
1311 (SPEC_SCLS (sym->etype) != S_FIXED &&
1312 SPEC_SCLS (sym->etype) != S_SBIT &&
1313 SPEC_SCLS (sym->etype) != S_BIT)
1316 werror (E_BITVAR_STORAGE, sym->name);
1317 SPEC_SCLS (sym->etype) = S_FIXED;
1320 /* extern variables cannot be initialized */
1321 if (IS_EXTERN (sym->etype) && sym->ival)
1323 werror (E_EXTERN_INIT, sym->name);
1327 /* if this is an automatic symbol */
1328 if (sym->level && (options.stackAuto || reentrant)) {
1329 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1330 SPEC_SCLS (sym->etype) == S_FIXED ||
1331 SPEC_SCLS (sym->etype) == S_REGISTER ||
1332 SPEC_SCLS (sym->etype) == S_STACK ||
1333 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1334 SPEC_SCLS (sym->etype) = S_AUTO;
1336 /* storage class may only be specified for statics */
1337 if (!IS_STATIC(sym->etype)) {
1338 werror (E_AUTO_ASSUMED, sym->name);
1343 /* automatic symbols cannot be given */
1344 /* an absolute address ignore it */
1346 SPEC_ABSA (sym->etype) &&
1347 (options.stackAuto || reentrant))
1349 werror (E_AUTO_ABSA, sym->name);
1350 SPEC_ABSA (sym->etype) = 0;
1353 /* arrays & pointers cannot be defined for bits */
1354 /* SBITS or SFRs or BIT */
1355 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1356 (SPEC_NOUN (sym->etype) == V_BIT ||
1357 SPEC_NOUN (sym->etype) == V_SBIT ||
1358 SPEC_NOUN (sym->etype) == V_BITFIELD ||
1359 SPEC_SCLS (sym->etype) == S_SFR))
1360 werror (E_BIT_ARRAY, sym->name);
1362 /* if this is a bit|sbit then set length & start */
1363 if (SPEC_NOUN (sym->etype) == V_BIT ||
1364 SPEC_NOUN (sym->etype) == V_SBIT)
1366 SPEC_BLEN (sym->etype) = 1;
1367 SPEC_BSTR (sym->etype) = 0;
1371 /* variables declared in CODE space must have */
1372 /* initializers if not an extern */
1373 if (SPEC_SCLS (sym->etype) == S_CODE &&
1374 sym->ival == NULL &&
1376 port->mem.code_ro &&
1377 !IS_EXTERN (sym->etype) &&
1378 !funcInChain (sym->type))
1379 werror (E_CODE_NO_INIT, sym->name);
1382 /* if parameter or local variable then change */
1383 /* the storage class to reflect where the var will go */
1384 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1385 !IS_STATIC(sym->etype))
1387 if (options.stackAuto || (currFunc && IFFUNC_ISREENT (currFunc->type)))
1389 SPEC_SCLS (sym->etype) = (options.useXstack ?
1390 S_XSTACK : S_STACK);
1394 /* hack-o-matic! I see no reason why the useXstack option should ever
1395 * control this allcoation, but the code was originally that way, and
1396 * changing it for non-390 ports breaks the compiler badly.
1398 bool useXdata = (TARGET_IS_DS390 || TARGET_IS_DS400) ?
1399 1 : options.useXstack;
1400 SPEC_SCLS (sym->etype) = (useXdata ?
1406 /*------------------------------------------------------------------*/
1407 /* changePointer - change pointer to functions */
1408 /*------------------------------------------------------------------*/
1410 changePointer (symbol * sym)
1414 /* go thru the chain of declarations */
1415 /* if we find a pointer to a function */
1416 /* unconditionally change it to a ptr */
1418 for (p = sym->type; p; p = p->next)
1420 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1421 DCL_TYPE (p) = port->unqualified_pointer;
1422 if (IS_PTR (p) && IS_FUNC (p->next))
1423 DCL_TYPE (p) = CPOINTER;
1427 /*------------------------------------------------------------------*/
1428 /* checkDecl - does semantic validation of a declaration */
1429 /*------------------------------------------------------------------*/
1431 checkDecl (symbol * sym, int isProto)
1434 checkSClass (sym, isProto); /* check the storage class */
1435 changePointer (sym); /* change pointers if required */
1437 /* if this is an array without any dimension
1438 then update the dimension from the initial value */
1439 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1440 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1445 /*------------------------------------------------------------------*/
1446 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1447 /*------------------------------------------------------------------*/
1449 copyLinkChain (sym_link * p)
1451 sym_link *head, *curr, *loop;
1454 head = loop = (curr ? newLink (p->class) : (void *) NULL);
1457 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1458 loop->next = (curr->next ? newLink (curr->next->class) : (void *) NULL);
1467 /*------------------------------------------------------------------*/
1468 /* cleanUpBlock - cleansup the symbol table specified for all the */
1469 /* symbols in the given block */
1470 /*------------------------------------------------------------------*/
1472 cleanUpBlock (bucket ** table, int block)
1477 /* go thru the entire table */
1478 for (i = 0; i < 256; i++)
1480 for (chain = table[i]; chain; chain = chain->next)
1482 if (chain->block >= block)
1484 deleteSym (table, chain->sym, chain->name);
1490 /*------------------------------------------------------------------*/
1491 /* cleanUpLevel - cleansup the symbol table specified for all the */
1492 /* symbols in the given level */
1493 /*------------------------------------------------------------------*/
1495 cleanUpLevel (bucket ** table, int level)
1500 /* go thru the entire table */
1501 for (i = 0; i < 256; i++)
1503 for (chain = table[i]; chain; chain = chain->next)
1505 if (chain->level >= level)
1507 deleteSym (table, chain->sym, chain->name);
1513 /*------------------------------------------------------------------*/
1514 /* computeType - computes the resultant type from two types */
1515 /*------------------------------------------------------------------*/
1517 computeType (sym_link * type1, sym_link * type2, bool promoteCharToInt)
1521 sym_link *etype1 = getSpec (type1);
1522 sym_link *etype2 = getSpec (type2);
1524 /* if one of them is a float then result is a float */
1525 /* here we assume that the types passed are okay */
1526 /* and can be cast to one another */
1527 /* which ever is greater in size */
1528 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1529 rType = newFloatLink ();
1531 /* if only one of them is a bit variable
1532 then the other one prevails */
1533 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1534 rType = copyLinkChain (type2);
1535 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1536 rType = copyLinkChain (type1);
1538 /* if one of them is a pointer or array then that
1540 if (IS_PTR (type1) || IS_ARRAY (type1))
1541 rType = copyLinkChain (type1);
1542 else if (IS_PTR (type2) || IS_ARRAY (type2))
1543 rType = copyLinkChain (type2);
1544 else if (getSize (type1) > getSize (type2))
1545 rType = copyLinkChain (type1);
1547 rType = copyLinkChain (type2);
1549 reType = getSpec (rType);
1551 /* avoid conflicting types */
1552 reType->select.s._signed = 0;
1554 if (IS_CHAR (reType) && promoteCharToInt)
1555 SPEC_NOUN (reType) = V_INT;
1557 if ( ( ( SPEC_USIGN (etype1)
1558 /* if this operand is promoted to a larger
1559 type don't check it's signedness */
1560 && (getSize (etype1) >= getSize (reType))
1561 /* We store signed literals in the range 0...255 as
1562 'unsigned char'. If there was no promotion to 'signed int'
1563 they must not force an unsigned operation: */
1564 && !(IS_CHAR (etype1) && IS_LITERAL (etype1)))
1565 || ( SPEC_USIGN (etype2)
1566 && (getSize (etype2) >= getSize (reType))
1567 && !(IS_CHAR (etype2) && IS_LITERAL (etype2))))
1568 && !IS_FLOAT (reType))
1569 SPEC_USIGN (reType) = 1;
1571 SPEC_USIGN (reType) = 0;
1573 /* if result is a literal then make not so */
1574 if (IS_LITERAL (reType))
1575 SPEC_SCLS (reType) = S_REGISTER;
1580 /*--------------------------------------------------------------------*/
1581 /* compareType - will do type check return 1 if match, -1 if castable */
1582 /*--------------------------------------------------------------------*/
1584 compareType (sym_link * dest, sym_link * src)
1595 /* if dest is a declarator then */
1600 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1602 //checkFunction(src,dest);
1604 return compareType (dest->next, src->next);
1606 if (IS_PTR (dest) && IS_GENPTR (src) && IS_VOID(src->next)) {
1609 if (IS_PTR (src) && IS_GENPTR (dest))
1611 if (IS_PTR (dest) && IS_ARRAY (src)) {
1612 value *val=aggregateToPointer (valFromType(src));
1613 int res=compareType (dest, val->type);
1614 Safe_free(val->type);
1618 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1619 return compareType (dest->next, src);
1622 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1628 /* if one is a specifier and the other is not */
1629 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1630 (IS_SPEC (dest) && !IS_SPEC (src)))
1633 /* if one of them is a void then ok */
1634 if (SPEC_NOUN (dest) == V_VOID &&
1635 SPEC_NOUN (src) != V_VOID)
1638 if (SPEC_NOUN (dest) != V_VOID &&
1639 SPEC_NOUN (src) == V_VOID)
1642 /* if they are both bitfields then if the lengths
1643 and starts don't match */
1644 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1645 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1646 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1649 /* it is a specifier */
1650 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1652 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1653 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1654 getSize (dest) == getSize (src))
1656 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1661 else if (IS_STRUCT (dest))
1663 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1668 if (SPEC_LONG (dest) != SPEC_LONG (src))
1671 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1677 /*--------------------------------------------------------------------*/
1678 /* compareTypeExact - will do type check return 1 if match exactly */
1679 /*--------------------------------------------------------------------*/
1681 compareTypeExact (sym_link * dest, sym_link * src, int level)
1683 STORAGE_CLASS srcScls, destScls;
1694 /* if dest is a declarator then */
1699 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1700 if ((DCL_TYPE (src) == ARRAY) && (DCL_ELEM (src) != DCL_ELEM (dest)))
1702 if (DCL_PTR_CONST (src) != DCL_PTR_CONST (dest))
1704 if (DCL_PTR_VOLATILE (src) != DCL_PTR_VOLATILE (dest))
1708 value *exargs, *acargs, *checkValue;
1710 /* verify function return type */
1711 if (!compareTypeExact (dest->next, src->next, -1))
1713 if (FUNC_ISISR (dest) != FUNC_ISISR (src))
1715 if (FUNC_REGBANK (dest) != FUNC_REGBANK (src))
1717 if (IFFUNC_ISNAKED (dest) != IFFUNC_ISNAKED (src))
1720 if (IFFUNC_ISREENT (dest) != IFFUNC_ISREENT (src) && argCnt>1)
1724 /* compare expected args with actual args */
1725 exargs = FUNC_ARGS(dest);
1726 acargs = FUNC_ARGS(src);
1728 /* for all the expected args do */
1729 for (; exargs && acargs; exargs = exargs->next, acargs = acargs->next)
1731 //checkTypeSanity(acargs->etype, acargs->name);
1733 if (IS_AGGREGATE (acargs->type))
1735 checkValue = copyValue (acargs);
1736 aggregateToPointer (checkValue);
1739 checkValue = acargs;
1742 if (!compareTypeExact (exargs->type, checkValue->type, -1))
1747 /* if one them ended we have a problem */
1748 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1749 (!exargs && acargs && !IS_VOID (acargs->type)))
1753 return compareTypeExact (dest->next, src->next, level);
1760 /* if one is a specifier and the other is not */
1761 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1762 (IS_SPEC (dest) && !IS_SPEC (src)))
1765 /* if one of them is a void then ok */
1766 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1769 /* if they are both bitfields then if the lengths
1770 and starts don't match */
1771 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1772 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1773 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1776 if (IS_INTEGRAL (dest))
1778 /* signedness must match */
1779 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1781 /* size must match */
1782 if (SPEC_LONG (dest) != SPEC_LONG (src))
1784 if (SPEC_SHORT (dest) != SPEC_SHORT (src))
1788 if (IS_STRUCT (dest))
1790 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1794 if (SPEC_CONST (dest) != SPEC_CONST (src))
1796 if (SPEC_VOLATILE (dest) != SPEC_VOLATILE (src))
1798 if (SPEC_STAT (dest) != SPEC_STAT (src))
1800 if (SPEC_ABSA (dest) != SPEC_ABSA (src))
1802 if (SPEC_ABSA (dest) && SPEC_ADDR (dest) != SPEC_ADDR (src))
1805 destScls = SPEC_SCLS (dest);
1806 srcScls = SPEC_SCLS (src);
1808 /* Compensate for const to const code change in checkSClass() */
1809 if (!level & port->mem.code_ro && SPEC_CONST (dest))
1811 if (srcScls == S_CODE && destScls == S_FIXED)
1813 if (destScls == S_CODE && srcScls == S_FIXED)
1817 /* compensate for allocGlobal() */
1818 if ((srcScls == S_FIXED || srcScls == S_AUTO)
1819 && port->mem.default_globl_map == xdata
1823 if (level>0 && !SPEC_STAT (dest))
1825 /* Compensate for hack-o-matic in checkSClass() */
1826 if (options.stackAuto || (currFunc && IFFUNC_ISREENT (currFunc->type)))
1828 if (destScls == S_FIXED)
1829 destScls = (options.useXstack ? S_XSTACK : S_STACK);
1830 if (srcScls == S_FIXED)
1831 srcScls = (options.useXstack ? S_XSTACK : S_STACK);
1833 else if (TARGET_IS_DS390 || TARGET_IS_DS400 || options.useXstack)
1835 if (destScls == S_FIXED)
1837 if (srcScls == S_FIXED)
1842 if (srcScls != destScls)
1845 printf ("level = %d\n", level);
1846 printf ("SPEC_SCLS (src) = %d, SPEC_SCLS (dest) = %d\n",
1847 SPEC_SCLS (src), SPEC_SCLS (dest));
1848 printf ("srcScls = %d, destScls = %d\n",srcScls, destScls);
1856 /*------------------------------------------------------------------*/
1857 /* inCalleeSaveList - return 1 if found in callee save list */
1858 /*------------------------------------------------------------------*/
1860 calleeCmp(void *p1, void *p2)
1862 return (strcmp((char *)p1, (char *)(p2)) == 0);
1866 inCalleeSaveList(char *s)
1868 if (options.all_callee_saves)
1870 return isinSetWith(options.calleeSavesSet, s, calleeCmp);
1873 /*-----------------------------------------------------------------*/
1874 /* aggregateToPointer: change an agggregate type function */
1875 /* argument to a pointer to that type. */
1876 /*-----------------------------------------------------------------*/
1878 aggregateToPointer (value * val)
1880 if (IS_AGGREGATE (val->type))
1882 /* if this is a structure */
1883 /* then we need to add a new link */
1884 if (IS_STRUCT (val->type))
1886 /* first lets add DECLARATOR type */
1887 sym_link *p = val->type;
1889 werror (W_STRUCT_AS_ARG, val->name);
1890 val->type = newLink (DECLARATOR);
1891 val->type->next = p;
1894 /* change to a pointer depending on the */
1895 /* storage class specified */
1896 switch (SPEC_SCLS (val->etype))
1899 DCL_TYPE (val->type) = IPOINTER;
1902 DCL_TYPE (val->type) = PPOINTER;
1905 if (SPEC_OCLS(val->etype)) {
1906 DCL_TYPE(val->type)=PTR_TYPE(SPEC_OCLS(val->etype));
1908 // this happens for (external) function parameters
1909 DCL_TYPE (val->type) = port->unqualified_pointer;
1915 DCL_TYPE (val->type) = POINTER;
1918 DCL_TYPE (val->type) = CPOINTER;
1921 DCL_TYPE (val->type) = FPOINTER;
1924 DCL_TYPE (val->type) = EEPPOINTER;
1927 DCL_TYPE (val->type) = port->unqualified_pointer;
1930 /* is there is a symbol associated then */
1931 /* change the type of the symbol as well */
1934 val->sym->type = copyLinkChain (val->type);
1935 val->sym->etype = getSpec (val->sym->type);
1940 /*------------------------------------------------------------------*/
1941 /* checkFunction - does all kinds of check on a function */
1942 /*------------------------------------------------------------------*/
1944 checkFunction (symbol * sym, symbol *csym)
1946 value *exargs, *acargs;
1950 if (getenv("DEBUG_SANITY")) {
1951 fprintf (stderr, "checkFunction: %s ", sym->name);
1954 if (!IS_DECL(sym->type) || DCL_TYPE(sym->type)!=FUNCTION)
1956 werror(E_SYNTAX_ERROR, sym->name);
1960 /* make sure the type is complete and sane */
1961 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1963 /* if not type then some kind of error */
1967 /* if the function has no type then make it return int */
1968 if (!sym->type->next)
1969 sym->type->next = sym->etype = newIntLink ();
1971 /* function cannot return aggregate */
1972 if (IS_AGGREGATE (sym->type->next))
1974 werror (E_FUNC_AGGR, sym->name);
1978 /* function cannot return bit */
1979 if (IS_BITVAR (sym->type->next))
1981 werror (E_FUNC_BIT, sym->name);
1985 /* check if this function is defined as calleeSaves
1986 then mark it as such */
1987 FUNC_CALLEESAVES(sym->type) = inCalleeSaveList (sym->name);
1989 /* if interrupt service routine */
1990 /* then it cannot have arguments */
1991 if (IFFUNC_ARGS(sym->type) && FUNC_ISISR (sym->type))
1993 if (!IS_VOID(FUNC_ARGS(sym->type)->type)) {
1994 werror (E_INT_ARGS, sym->name);
1995 FUNC_ARGS(sym->type)=NULL;
1999 for (argCnt=1, acargs = FUNC_ARGS(sym->type);
2001 acargs=acargs->next, argCnt++) {
2003 // this can happen for reentrant functions
2004 werror(E_PARAM_NAME_OMITTED, sym->name, argCnt);
2005 // the show must go on: synthesize a name and symbol
2006 SNPRINTF (acargs->name, sizeof(acargs->name), "_%s_PARM_%d", sym->name, argCnt);
2007 acargs->sym = newSymbol (acargs->name, 1);
2008 SPEC_OCLS (acargs->etype) = istack;
2009 acargs->sym->type = copyLinkChain (acargs->type);
2010 acargs->sym->etype = getSpec (acargs->sym->type);
2011 acargs->sym->_isparm = 1;
2012 strncpyz (acargs->sym->rname, acargs->name, sizeof(acargs->sym->rname));
2013 } else if (strcmp(acargs->sym->name, acargs->sym->rname)==0) {
2015 werror(E_PARAM_NAME_OMITTED, sym->name, argCnt);
2020 if (!csym && !(csym = findSym (SymbolTab, sym, sym->name)))
2021 return 1; /* not defined nothing more to check */
2023 /* check if body already present */
2024 if (csym && IFFUNC_HASBODY(csym->type))
2026 werror (E_FUNC_BODY, sym->name);
2030 /* check the return value type */
2031 if (compareType (csym->type, sym->type) <= 0)
2033 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
2034 printFromToType(csym->type, sym->type);
2038 if (FUNC_ISISR (csym->type) != FUNC_ISISR (sym->type))
2040 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
2043 if (FUNC_REGBANK (csym->type) != FUNC_REGBANK (sym->type))
2045 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
2048 if (IFFUNC_ISNAKED (csym->type) != IFFUNC_ISNAKED (sym->type))
2050 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
2053 /* Really, reentrant should match regardless of argCnt, but */
2054 /* this breaks some existing code (the fp lib functions). If */
2055 /* the first argument is always passed the same way, this */
2056 /* lax checking is ok (but may not be true for in future ports) */
2057 if (IFFUNC_ISREENT (csym->type) != IFFUNC_ISREENT (sym->type)
2060 //printf("argCnt = %d\n",argCnt);
2061 werror (E_PREV_DEF_CONFLICT, csym->name, "reentrant");
2064 /* compare expected args with actual args */
2065 exargs = FUNC_ARGS(csym->type);
2066 acargs = FUNC_ARGS(sym->type);
2068 /* for all the expected args do */
2071 exargs = exargs->next, acargs = acargs->next, argCnt++)
2073 if (getenv("DEBUG_SANITY")) {
2074 fprintf (stderr, "checkFunction: %s ", exargs->name);
2076 /* make sure the type is complete and sane */
2077 checkTypeSanity(exargs->etype, exargs->name);
2079 /* If the actual argument is an array, any prototype
2080 * will have modified it to a pointer. Duplicate that
2083 if (IS_AGGREGATE (acargs->type))
2085 checkValue = copyValue (acargs);
2086 aggregateToPointer (checkValue);
2090 checkValue = acargs;
2093 if (compareType (exargs->type, checkValue->type) <= 0)
2095 werror (E_ARG_TYPE, argCnt);
2096 printFromToType(exargs->type, checkValue->type);
2101 /* if one them ended we have a problem */
2102 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
2103 (!exargs && acargs && !IS_VOID (acargs->type)))
2104 werror (E_ARG_COUNT);
2106 /* replace with this defition */
2107 sym->cdef = csym->cdef;
2108 deleteSym (SymbolTab, csym, csym->name);
2109 deleteFromSeg(csym);
2110 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
2111 if (IS_EXTERN (csym->etype) && !
2112 IS_EXTERN (sym->etype))
2114 addSet (&publics, sym);
2119 /*------------------------------------------------------------------*/
2120 /* cdbStructBlock - calls struct printing for a blcks */
2121 /*------------------------------------------------------------------*/
2122 void cdbStructBlock (int block)
2125 bucket **table = StructTab;
2128 /* go thru the entire table */
2129 for (i = 0; i < 256; i++)
2131 for (chain = table[i]; chain; chain = chain->next)
2133 if (chain->block >= block)
2136 debugFile->writeType((structdef *)chain->sym, chain->block, 0, NULL);
2142 /*-----------------------------------------------------------------*/
2143 /* processFuncArgs - does some processing with function args */
2144 /*-----------------------------------------------------------------*/
2146 processFuncArgs (symbol * func)
2150 sym_link *funcType=func->type;
2152 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
2153 fprintf (stderr, "SDCCsymt.c:processFuncArgs(%s)\n", func->name);
2155 // if this is a pointer to a function
2156 if (IS_PTR(funcType)) {
2157 funcType=funcType->next;
2160 /* if this function has variable argument list */
2161 /* then make the function a reentrant one */
2162 if (IFFUNC_HASVARARGS(funcType) || (options.stackAuto && !func->cdef))
2163 FUNC_ISREENT(funcType)=1;
2165 /* check if this function is defined as calleeSaves
2166 then mark it as such */
2167 FUNC_CALLEESAVES(funcType) = inCalleeSaveList (func->name);
2169 /* loop thru all the arguments */
2170 val = FUNC_ARGS(funcType);
2172 /* if it is void then remove parameters */
2173 if (val && IS_VOID (val->type))
2175 FUNC_ARGS(funcType) = NULL;
2179 /* reset regparm for the port */
2180 (*port->reset_regparms) ();
2181 /* if any of the arguments is an aggregate */
2182 /* change it to pointer to the same type */
2186 /* mark it as a register parameter if
2187 the function does not have VA_ARG
2188 and as port dictates */
2189 if (!IFFUNC_HASVARARGS(funcType) &&
2190 (argreg = (*port->reg_parm) (val->type)))
2192 SPEC_REGPARM (val->etype) = 1;
2193 SPEC_ARGREG(val->etype) = argreg;
2194 } else if (IFFUNC_ISREENT(funcType)) {
2195 FUNC_HASSTACKPARM(funcType) = 1;
2198 if (IS_AGGREGATE (val->type))
2200 aggregateToPointer (val);
2207 /* if this is an internal generated function call */
2209 /* ignore --stack-auto for this one, we don't know how it is compiled */
2210 /* simply trust on --int-long-reent or --float-reent */
2211 if (IFFUNC_ISREENT(funcType)) {
2215 /* if this function is reentrant or */
2216 /* automatics r 2b stacked then nothing */
2217 if (IFFUNC_ISREENT (funcType) || options.stackAuto)
2221 val = FUNC_ARGS(funcType);
2226 /* if a symbolname is not given */
2227 /* synthesize a variable name */
2230 SNPRINTF (val->name, sizeof(val->name),
2231 "_%s_PARM_%d", func->name, pNum++);
2232 val->sym = newSymbol (val->name, 1);
2233 SPEC_OCLS (val->etype) = port->mem.default_local_map;
2234 val->sym->type = copyLinkChain (val->type);
2235 val->sym->etype = getSpec (val->sym->type);
2236 val->sym->_isparm = 1;
2237 strncpyz (val->sym->rname, val->name, sizeof(val->sym->rname));
2239 /* ?? static functions shouldn't imply static parameters - EEP */
2240 if (IS_SPEC(func->etype)) {
2241 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
2242 SPEC_STAT (func->etype);
2245 addSymChain (val->sym);
2248 else /* symbol name given create synth name */
2251 SNPRINTF (val->name, sizeof(val->name), "_%s_PARM_%d", func->name, pNum++);
2252 strncpyz (val->sym->rname, val->name, sizeof(val->sym->rname));
2253 val->sym->_isparm = 1;
2254 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
2255 (options.model != MODEL_SMALL ? xdata : data);
2258 /* ?? static functions shouldn't imply static parameters - EEP */
2259 if (IS_SPEC(func->etype)) {
2260 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
2261 SPEC_STAT (func->etype);
2265 if (!isinSet(operKeyReset, val->sym)) {
2266 addSet (&operKeyReset, val->sym);
2267 applyToSet (operKeyReset, resetParmKey);
2273 /*-----------------------------------------------------------------*/
2274 /* isSymbolEqual - compares two symbols return 1 if they match */
2275 /*-----------------------------------------------------------------*/
2277 isSymbolEqual (symbol * dest, symbol * src)
2279 /* if pointers match then equal */
2283 /* if one of them is null then don't match */
2287 /* if both of them have rname match on rname */
2288 if (dest->rname[0] && src->rname[0])
2289 return (!strcmp (dest->rname, src->rname));
2291 /* otherwise match on name */
2292 return (!strcmp (dest->name, src->name));
2295 void PT(sym_link *type)
2297 printTypeChain(type,0);
2299 /*-----------------------------------------------------------------*/
2300 /* printTypeChain - prints the type chain in human readable form */
2301 /*-----------------------------------------------------------------*/
2303 printTypeChain (sym_link * start, FILE * of)
2307 sym_link * type, * search;
2317 fprintf (of, "void");
2321 /* Print the chain as it is written in the source: */
2322 /* start with the last entry. */
2323 /* However, the storage class at the end of the */
2324 /* chain reall applies to the first in the chain! */
2326 for (type = start; type && type->next; type = type->next)
2329 scls=SPEC_SCLS(type);
2337 case S_DATA: fprintf (of, "data-"); break;
2338 case S_XDATA: fprintf (of, "xdata-"); break;
2339 case S_SFR: fprintf (of, "sfr-"); break;
2340 case S_SBIT: fprintf (of, "sbit-"); break;
2341 case S_CODE: fprintf (of, "code-"); break;
2342 case S_IDATA: fprintf (of, "idata-"); break;
2343 case S_PDATA: fprintf (of, "pdata-"); break;
2344 case S_LITERAL: fprintf (of, "literal-"); break;
2345 case S_STACK: fprintf (of, "stack-"); break;
2346 case S_XSTACK: fprintf (of, "xstack-"); break;
2347 case S_BIT: fprintf (of, "bit-"); break;
2348 case S_EEPROM: fprintf (of, "eeprom-"); break;
2355 if (!IS_FUNC(type)) {
2356 if (DCL_PTR_VOLATILE (type)) {
2357 fprintf (of, "volatile-");
2359 if (DCL_PTR_CONST (type)) {
2360 fprintf (of, "const-");
2363 switch (DCL_TYPE (type))
2366 fprintf (of, "function %s %s",
2367 (IFFUNC_ISBUILTIN(type) ? "__builtin__" : " "),
2368 (IFFUNC_ISJAVANATIVE(type) ? "_JavaNative" : " "));
2370 for (args = FUNC_ARGS(type);
2373 printTypeChain(args->type, of);
2380 fprintf (of, "generic* ");
2383 fprintf (of, "code* ");
2386 fprintf (of, "xdata* ");
2389 fprintf (of, "eeprom* ");
2392 fprintf (of, "near* ");
2395 fprintf (of, "idata* ");
2398 fprintf (of, "pdata* ");
2401 fprintf (of, "unknown* ");
2404 if (DCL_ELEM(type)) {
2405 fprintf (of, "[%d] ", DCL_ELEM(type));
2407 fprintf (of, "[] ");
2414 if (SPEC_VOLATILE (type))
2415 fprintf (of, "volatile-");
2416 if (SPEC_CONST (type))
2417 fprintf (of, "const-");
2418 if (SPEC_USIGN (type))
2419 fprintf (of, "unsigned-");
2420 switch (SPEC_NOUN (type))
2424 fprintf (of, "long-");
2425 fprintf (of, "int");
2429 fprintf (of, "char");
2433 fprintf (of, "void");
2437 fprintf (of, "float");
2441 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2445 fprintf (of, "sbit");
2449 fprintf (of, "bit");
2453 fprintf (of, "bitfield {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2457 fprintf (of, "double");
2461 fprintf (of, "unknown type");
2465 /* search entry in list before "type" */
2466 for (search = start; search && search->next != type;)
2467 search = search->next;
2476 /*--------------------------------------------------------------------*/
2477 /* printTypeChainRaw - prints the type chain in human readable form */
2478 /* in the raw data structure ordering */
2479 /*--------------------------------------------------------------------*/
2481 printTypeChainRaw (sym_link * start, FILE * of)
2494 fprintf (of, "void");
2504 if (!IS_FUNC(type)) {
2505 if (DCL_PTR_VOLATILE (type)) {
2506 fprintf (of, "volatile-");
2508 if (DCL_PTR_CONST (type)) {
2509 fprintf (of, "const-");
2512 switch (DCL_TYPE (type))
2515 fprintf (of, "function %s %s",
2516 (IFFUNC_ISBUILTIN(type) ? "__builtin__" : " "),
2517 (IFFUNC_ISJAVANATIVE(type) ? "_JavaNative" : " "));
2519 for (args = FUNC_ARGS(type);
2522 printTypeChain(args->type, of);
2529 fprintf (of, "generic* ");
2532 fprintf (of, "code* ");
2535 fprintf (of, "xdata* ");
2538 fprintf (of, "eeprom* ");
2541 fprintf (of, "near* ");
2544 fprintf (of, "idata* ");
2547 fprintf (of, "pdata* ");
2550 fprintf (of, "unknown* ");
2553 if (DCL_ELEM(type)) {
2554 fprintf (of, "[%d] ", DCL_ELEM(type));
2556 fprintf (of, "[] ");
2560 if (DCL_TSPEC(type))
2563 printTypeChainRaw(DCL_TSPEC(type), of);
2567 else if (IS_SPEC (type))
2569 switch (SPEC_SCLS (type))
2571 case S_DATA: fprintf (of, "data-"); break;
2572 case S_XDATA: fprintf (of, "xdata-"); break;
2573 case S_SFR: fprintf (of, "sfr-"); break;
2574 case S_SBIT: fprintf (of, "sbit-"); break;
2575 case S_CODE: fprintf (of, "code-"); break;
2576 case S_IDATA: fprintf (of, "idata-"); break;
2577 case S_PDATA: fprintf (of, "pdata-"); break;
2578 case S_LITERAL: fprintf (of, "literal-"); break;
2579 case S_STACK: fprintf (of, "stack-"); break;
2580 case S_XSTACK: fprintf (of, "xstack-"); break;
2581 case S_BIT: fprintf (of, "bit-"); break;
2582 case S_EEPROM: fprintf (of, "eeprom-"); break;
2585 if (SPEC_VOLATILE (type))
2586 fprintf (of, "volatile-");
2587 if (SPEC_CONST (type))
2588 fprintf (of, "const-");
2589 if (SPEC_USIGN (type))
2590 fprintf (of, "unsigned-");
2591 switch (SPEC_NOUN (type))
2595 fprintf (of, "long-");
2596 fprintf (of, "int");
2600 fprintf (of, "char");
2604 fprintf (of, "void");
2608 fprintf (of, "float");
2612 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2616 fprintf (of, "sbit");
2620 fprintf (of, "bit");
2624 fprintf (of, "bitfield {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2628 fprintf (of, "double");
2632 fprintf (of, "unknown type");
2637 fprintf (of, "NOT_SPEC_OR_DECL");
2647 /*-----------------------------------------------------------------*/
2648 /* powof2 - returns power of two for the number if number is pow 2 */
2649 /*-----------------------------------------------------------------*/
2651 powof2 (TYPE_UDWORD num)
2664 if (n1s > 1 || nshifts == 0)
2680 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2681 symbol *__muldiv[3][3][2];
2682 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2683 sym_link *__multypes[3][2];
2684 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2685 symbol *__conv[2][3][2];
2686 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2687 symbol *__rlrr[2][3][2];
2689 sym_link *floatType;
2692 _mangleFunctionName(char *in)
2694 if (port->getMangledFunctionName)
2696 return port->getMangledFunctionName(in);
2704 /*-----------------------------------------------------------------*/
2705 /* typeFromStr - create a typechain from an encoded string */
2706 /* basic types - 'c' - char */
2712 /* '*' - pointer - default (GPOINTER) */
2713 /* modifiers - 'u' - unsigned */
2714 /* pointer modifiers - 'g' - generic */
2718 /* 'F' - function */
2719 /* examples : "ig*" - generic int * */
2720 /* "cx*" - char xdata * */
2721 /* "ui" - unsigned int */
2722 /*-----------------------------------------------------------------*/
2723 sym_link *typeFromStr (char *s)
2725 sym_link *r = newLink(DECLARATOR);
2737 r->class = SPECIFIER;
2738 SPEC_NOUN(r) = V_CHAR;
2742 r->class = SPECIFIER;
2743 SPEC_NOUN(r) = V_INT;
2746 r->class = SPECIFIER;
2747 SPEC_NOUN(r) = V_INT;
2751 r->class = SPECIFIER;
2752 SPEC_NOUN(r) = V_FLOAT;
2755 r->class = SPECIFIER;
2756 SPEC_NOUN(r) = V_VOID;
2759 DCL_TYPE(r) = port->unqualified_pointer;
2766 assert(*(s+1)=='*');
2767 nr = newLink(DECLARATOR);
2772 DCL_TYPE(r) = GPOINTER;
2775 DCL_TYPE(r) = FPOINTER;
2778 DCL_TYPE(r) = CPOINTER;
2781 DCL_TYPE(r) = POINTER;
2784 DCL_TYPE(r) = FUNCTION;
2785 nr = newLink(DECLARATOR);
2788 DCL_TYPE(r) = CPOINTER;
2794 werror(E_INTERNAL_ERROR, __FILE__, __LINE__,
2795 "typeFromStr: unknown type");
2798 if (IS_SPEC(r) && usign) {
2807 /*-----------------------------------------------------------------*/
2808 /* initCSupport - create functions for C support routines */
2809 /*-----------------------------------------------------------------*/
2813 const char *smuldivmod[] =
2817 const char *sbwd[] =
2819 "char", "int", "long"
2825 const char *srlrr[] =
2830 int bwd, su, muldivmod, tofrom, rlrr;
2832 if (getenv("SDCC_NO_C_SUPPORT")) {
2833 /* for debugging only */
2837 floatType = newFloatLink ();
2839 for (bwd = 0; bwd < 3; bwd++)
2856 __multypes[bwd][0] = l;
2857 __multypes[bwd][1] = copyLinkChain (l);
2858 SPEC_USIGN (__multypes[bwd][1]) = 1;
2861 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2862 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2863 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2864 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2865 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2866 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2867 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2868 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2869 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2870 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2872 for (tofrom = 0; tofrom < 2; tofrom++)
2874 for (bwd = 0; bwd < 3; bwd++)
2876 for (su = 0; su < 2; su++)
2880 SNPRINTF (buffer, sizeof(buffer), "__fs2%s%s", ssu[su], sbwd[bwd]);
2881 __conv[tofrom][bwd][su] = funcOfType (buffer, __multypes[bwd][su], floatType, 1, options.float_rent);
2885 SNPRINTF (buffer, sizeof(buffer), "__%s%s2fs", ssu[su], sbwd[bwd]);
2886 __conv[tofrom][bwd][su] = funcOfType (buffer, floatType, __multypes[bwd][su], 1, options.float_rent);
2893 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2895 for (bwd = 0; bwd < 3; bwd++)
2897 for (su = 0; su < 2; su++)
2899 SNPRINTF (buffer, sizeof(buffer),
2901 smuldivmod[muldivmod],
2904 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2905 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2910 muluint() and mulsint() resp. mululong() and mulslong() return the same result.
2911 Therefore they've been merged into mulint() and mullong().
2914 for (bwd = 0; bwd < 3; bwd++)
2916 for (su = 0; su < 2; su++)
2918 for (muldivmod = 1; muldivmod < 3; muldivmod++)
2921 SNPRINTF (buffer, sizeof(buffer),
2923 smuldivmod[muldivmod],
2926 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2927 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2935 for (su = 0; su < 2; su++)
2937 /* muluchar and mulschar are still separate functions, because e.g. the z80
2938 port is sign/zero-extending to int before calling mulint() */
2939 SNPRINTF (buffer, sizeof(buffer),
2941 smuldivmod[muldivmod],
2944 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2945 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2949 /* word and doubleword */
2950 for (bwd = 1; bwd < 3; bwd++)
2953 SNPRINTF (buffer, sizeof(buffer),
2955 smuldivmod[muldivmod],
2957 __muldiv[muldivmod][bwd][0] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2958 FUNC_NONBANKED (__muldiv[muldivmod][bwd][0]->type) = 1;
2959 /* signed = unsigned */
2960 __muldiv[muldivmod][bwd][1] = __muldiv[muldivmod][bwd][0];
2963 for (rlrr = 0; rlrr < 2; rlrr++)
2965 for (bwd = 0; bwd < 3; bwd++)
2967 for (su = 0; su < 2; su++)
2969 SNPRINTF (buffer, sizeof(buffer),
2974 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2975 FUNC_NONBANKED (__rlrr[rlrr][bwd][su]->type) = 1;
2981 /*-----------------------------------------------------------------*/
2982 /* initBuiltIns - create prototypes for builtin functions */
2983 /*-----------------------------------------------------------------*/
2989 if (!port->builtintable) return ;
2991 for (i = 0 ; port->builtintable[i].name ; i++) {
2992 sym = funcOfTypeVarg(port->builtintable[i].name,port->builtintable[i].rtype,
2993 port->builtintable[i].nParms,port->builtintable[i].parm_types);
2994 FUNC_ISBUILTIN(sym->type) = 1;
2995 FUNC_ISREENT(sym->type) = 0; /* can never be reentrant */
2999 sym_link *validateLink(sym_link *l,
3006 if (l && l->class==select)
3011 "Internal error: validateLink failed in %s(%s) @ %s:%u:"
3012 " expected %s, got %s\n",
3013 macro, args, file, line,
3014 DECLSPEC2TXT(select), l ? DECLSPEC2TXT(l->class) : "null-link");
3016 return l; // never reached, makes compiler happy.
3019 /*--------------------------------------------------------------------*/
3020 /* newEnumType - create an integer type compatible with enumerations */
3021 /*--------------------------------------------------------------------*/
3023 newEnumType (symbol *enumlist)
3031 type = newLink (SPECIFIER);
3032 SPEC_NOUN (type) = V_INT;
3036 /* Determine the range of the enumerated values */
3038 min = max = (int) floatFromVal (valFromType (sym->type));
3039 for (sym = sym->next; sym; sym = sym->next)
3041 v = (int) floatFromVal (valFromType (sym->type));
3048 /* Determine the smallest integer type that is compatible with this range */
3049 type = newLink (SPECIFIER);
3050 if (min>=0 && max<=255)
3052 SPEC_NOUN (type) = V_CHAR;
3053 SPEC_USIGN (type) = 1;
3055 else if (min>=-128 && max<=127)
3057 SPEC_NOUN (type) = V_CHAR;
3059 else if (min>=0 && max<=65535)
3061 SPEC_NOUN (type) = V_INT;
3062 SPEC_USIGN (type) = 1;
3064 else if (min>=-32768 && max<=32767)
3066 SPEC_NOUN (type) = V_INT;
3070 SPEC_NOUN (type) = V_INT;
3071 SPEC_LONG (type) = 1;
3073 SPEC_USIGN (type) = 1;