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);
1524 etype2 = type2 ? getSpec (type2) : type1;
1526 /* if one of them is a float then result is a float */
1527 /* here we assume that the types passed are okay */
1528 /* and can be cast to one another */
1529 /* which ever is greater in size */
1530 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1531 rType = newFloatLink ();
1533 /* if only one of them is a bit variable
1534 then the other one prevails */
1535 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1536 rType = copyLinkChain (type2);
1537 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1538 rType = copyLinkChain (type1);
1540 /* if one of them is a pointer or array then that
1542 if (IS_PTR (type1) || IS_ARRAY (type1))
1543 rType = copyLinkChain (type1);
1544 else if (IS_PTR (type2) || IS_ARRAY (type2))
1545 rType = copyLinkChain (type2);
1546 else if (getSize (type1) > getSize (type2))
1547 rType = copyLinkChain (type1);
1549 rType = copyLinkChain (type2);
1551 reType = getSpec (rType);
1553 /* avoid conflicting types */
1554 reType->select.s._signed = 0;
1556 if (IS_CHAR (reType) && promoteCharToInt)
1557 SPEC_NOUN (reType) = V_INT;
1559 if (!IS_FLOAT (reType)
1560 && ( ( SPEC_USIGN (etype1)
1561 /* if this operand is promoted to a larger
1562 type don't check it's signedness */
1563 && (getSize (etype1) >= getSize (reType))
1564 /* char has to handled as it would have
1565 been promoted to int */
1566 && !IS_CHAR (etype1))
1567 /* same for 2nd operand */
1568 || ( SPEC_USIGN (etype2)
1569 && (getSize (etype2) >= getSize (reType))
1570 && !IS_CHAR (etype2))
1571 /* if both are unsigned char and not promoted
1572 let the result be unsigned too */
1573 || ( SPEC_USIGN (etype1)
1574 && SPEC_USIGN (etype2)
1577 && !promoteCharToInt)))
1578 SPEC_USIGN (reType) = 1;
1580 SPEC_USIGN (reType) = 0;
1582 /* if result is a literal then make not so */
1583 if (IS_LITERAL (reType))
1584 SPEC_SCLS (reType) = S_REGISTER;
1589 /*--------------------------------------------------------------------*/
1590 /* compareType - will do type check return 1 if match, -1 if castable */
1591 /*--------------------------------------------------------------------*/
1593 compareType (sym_link * dest, sym_link * src)
1604 /* if dest is a declarator then */
1609 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1611 //checkFunction(src,dest);
1613 return compareType (dest->next, src->next);
1615 if (IS_PTR (dest) && IS_GENPTR (src) && IS_VOID(src->next)) {
1618 if (IS_PTR (src) && IS_GENPTR (dest))
1620 if (IS_PTR (dest) && IS_ARRAY (src)) {
1621 value *val=aggregateToPointer (valFromType(src));
1622 int res=compareType (dest, val->type);
1623 Safe_free(val->type);
1627 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1628 return compareType (dest->next, src);
1631 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1637 /* if one is a specifier and the other is not */
1638 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1639 (IS_SPEC (dest) && !IS_SPEC (src)))
1642 /* if one of them is a void then ok */
1643 if (SPEC_NOUN (dest) == V_VOID &&
1644 SPEC_NOUN (src) != V_VOID)
1647 if (SPEC_NOUN (dest) != V_VOID &&
1648 SPEC_NOUN (src) == V_VOID)
1651 /* if they are both bitfields then if the lengths
1652 and starts don't match */
1653 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1654 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1655 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1658 /* it is a specifier */
1659 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1661 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1662 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1663 getSize (dest) == getSize (src))
1665 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1670 else if (IS_STRUCT (dest))
1672 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1677 if (SPEC_LONG (dest) != SPEC_LONG (src))
1680 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1686 /*--------------------------------------------------------------------*/
1687 /* compareTypeExact - will do type check return 1 if match exactly */
1688 /*--------------------------------------------------------------------*/
1690 compareTypeExact (sym_link * dest, sym_link * src, int level)
1692 STORAGE_CLASS srcScls, destScls;
1703 /* if dest is a declarator then */
1708 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1709 if ((DCL_TYPE (src) == ARRAY) && (DCL_ELEM (src) != DCL_ELEM (dest)))
1711 if (DCL_PTR_CONST (src) != DCL_PTR_CONST (dest))
1713 if (DCL_PTR_VOLATILE (src) != DCL_PTR_VOLATILE (dest))
1717 value *exargs, *acargs, *checkValue;
1719 /* verify function return type */
1720 if (!compareTypeExact (dest->next, src->next, -1))
1722 if (FUNC_ISISR (dest) != FUNC_ISISR (src))
1724 if (FUNC_REGBANK (dest) != FUNC_REGBANK (src))
1726 if (IFFUNC_ISNAKED (dest) != IFFUNC_ISNAKED (src))
1729 if (IFFUNC_ISREENT (dest) != IFFUNC_ISREENT (src) && argCnt>1)
1733 /* compare expected args with actual args */
1734 exargs = FUNC_ARGS(dest);
1735 acargs = FUNC_ARGS(src);
1737 /* for all the expected args do */
1738 for (; exargs && acargs; exargs = exargs->next, acargs = acargs->next)
1740 //checkTypeSanity(acargs->etype, acargs->name);
1742 if (IS_AGGREGATE (acargs->type))
1744 checkValue = copyValue (acargs);
1745 aggregateToPointer (checkValue);
1748 checkValue = acargs;
1751 if (!compareTypeExact (exargs->type, checkValue->type, -1))
1756 /* if one them ended we have a problem */
1757 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1758 (!exargs && acargs && !IS_VOID (acargs->type)))
1762 return compareTypeExact (dest->next, src->next, level);
1769 /* if one is a specifier and the other is not */
1770 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1771 (IS_SPEC (dest) && !IS_SPEC (src)))
1774 /* if one of them is a void then ok */
1775 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1778 /* if they are both bitfields then if the lengths
1779 and starts don't match */
1780 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1781 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1782 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1785 if (IS_INTEGRAL (dest))
1787 /* signedness must match */
1788 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1790 /* size must match */
1791 if (SPEC_LONG (dest) != SPEC_LONG (src))
1793 if (SPEC_SHORT (dest) != SPEC_SHORT (src))
1797 if (IS_STRUCT (dest))
1799 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1803 if (SPEC_CONST (dest) != SPEC_CONST (src))
1805 if (SPEC_VOLATILE (dest) != SPEC_VOLATILE (src))
1807 if (SPEC_STAT (dest) != SPEC_STAT (src))
1809 if (SPEC_ABSA (dest) != SPEC_ABSA (src))
1811 if (SPEC_ABSA (dest) && SPEC_ADDR (dest) != SPEC_ADDR (src))
1814 destScls = SPEC_SCLS (dest);
1815 srcScls = SPEC_SCLS (src);
1817 /* Compensate for const to const code change in checkSClass() */
1818 if (!level & port->mem.code_ro && SPEC_CONST (dest))
1820 if (srcScls == S_CODE && destScls == S_FIXED)
1822 if (destScls == S_CODE && srcScls == S_FIXED)
1826 /* compensate for allocGlobal() */
1827 if ((srcScls == S_FIXED || srcScls == S_AUTO)
1828 && port->mem.default_globl_map == xdata
1832 if (level>0 && !SPEC_STAT (dest))
1834 /* Compensate for hack-o-matic in checkSClass() */
1835 if (options.stackAuto || (currFunc && IFFUNC_ISREENT (currFunc->type)))
1837 if (destScls == S_FIXED)
1838 destScls = (options.useXstack ? S_XSTACK : S_STACK);
1839 if (srcScls == S_FIXED)
1840 srcScls = (options.useXstack ? S_XSTACK : S_STACK);
1842 else if (TARGET_IS_DS390 || TARGET_IS_DS400 || options.useXstack)
1844 if (destScls == S_FIXED)
1846 if (srcScls == S_FIXED)
1851 if (srcScls != destScls)
1854 printf ("level = %d\n", level);
1855 printf ("SPEC_SCLS (src) = %d, SPEC_SCLS (dest) = %d\n",
1856 SPEC_SCLS (src), SPEC_SCLS (dest));
1857 printf ("srcScls = %d, destScls = %d\n",srcScls, destScls);
1865 /*------------------------------------------------------------------*/
1866 /* inCalleeSaveList - return 1 if found in callee save list */
1867 /*------------------------------------------------------------------*/
1869 calleeCmp(void *p1, void *p2)
1871 return (strcmp((char *)p1, (char *)(p2)) == 0);
1875 inCalleeSaveList(char *s)
1877 if (options.all_callee_saves)
1879 return isinSetWith(options.calleeSavesSet, s, calleeCmp);
1882 /*-----------------------------------------------------------------*/
1883 /* aggregateToPointer: change an agggregate type function */
1884 /* argument to a pointer to that type. */
1885 /*-----------------------------------------------------------------*/
1887 aggregateToPointer (value * val)
1889 if (IS_AGGREGATE (val->type))
1891 /* if this is a structure */
1892 /* then we need to add a new link */
1893 if (IS_STRUCT (val->type))
1895 /* first lets add DECLARATOR type */
1896 sym_link *p = val->type;
1898 werror (W_STRUCT_AS_ARG, val->name);
1899 val->type = newLink (DECLARATOR);
1900 val->type->next = p;
1903 /* change to a pointer depending on the */
1904 /* storage class specified */
1905 switch (SPEC_SCLS (val->etype))
1908 DCL_TYPE (val->type) = IPOINTER;
1911 DCL_TYPE (val->type) = PPOINTER;
1914 if (SPEC_OCLS(val->etype)) {
1915 DCL_TYPE(val->type)=PTR_TYPE(SPEC_OCLS(val->etype));
1917 // this happens for (external) function parameters
1918 DCL_TYPE (val->type) = port->unqualified_pointer;
1924 DCL_TYPE (val->type) = POINTER;
1927 DCL_TYPE (val->type) = CPOINTER;
1930 DCL_TYPE (val->type) = FPOINTER;
1933 DCL_TYPE (val->type) = EEPPOINTER;
1936 DCL_TYPE (val->type) = port->unqualified_pointer;
1939 /* is there is a symbol associated then */
1940 /* change the type of the symbol as well */
1943 val->sym->type = copyLinkChain (val->type);
1944 val->sym->etype = getSpec (val->sym->type);
1949 /*------------------------------------------------------------------*/
1950 /* checkFunction - does all kinds of check on a function */
1951 /*------------------------------------------------------------------*/
1953 checkFunction (symbol * sym, symbol *csym)
1955 value *exargs, *acargs;
1959 if (getenv("DEBUG_SANITY")) {
1960 fprintf (stderr, "checkFunction: %s ", sym->name);
1963 if (!IS_DECL(sym->type) || DCL_TYPE(sym->type)!=FUNCTION)
1965 werror(E_SYNTAX_ERROR, sym->name);
1969 /* make sure the type is complete and sane */
1970 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1972 /* if not type then some kind of error */
1976 /* if the function has no type then make it return int */
1977 if (!sym->type->next)
1978 sym->type->next = sym->etype = newIntLink ();
1980 /* function cannot return aggregate */
1981 if (IS_AGGREGATE (sym->type->next))
1983 werror (E_FUNC_AGGR, sym->name);
1987 /* function cannot return bit */
1988 if (IS_BITVAR (sym->type->next))
1990 werror (E_FUNC_BIT, sym->name);
1994 /* check if this function is defined as calleeSaves
1995 then mark it as such */
1996 FUNC_CALLEESAVES(sym->type) = inCalleeSaveList (sym->name);
1998 /* if interrupt service routine */
1999 /* then it cannot have arguments */
2000 if (IFFUNC_ARGS(sym->type) && FUNC_ISISR (sym->type))
2002 if (!IS_VOID(FUNC_ARGS(sym->type)->type)) {
2003 werror (E_INT_ARGS, sym->name);
2004 FUNC_ARGS(sym->type)=NULL;
2008 for (argCnt=1, acargs = FUNC_ARGS(sym->type);
2010 acargs=acargs->next, argCnt++) {
2012 // this can happen for reentrant functions
2013 werror(E_PARAM_NAME_OMITTED, sym->name, argCnt);
2014 // the show must go on: synthesize a name and symbol
2015 SNPRINTF (acargs->name, sizeof(acargs->name), "_%s_PARM_%d", sym->name, argCnt);
2016 acargs->sym = newSymbol (acargs->name, 1);
2017 SPEC_OCLS (acargs->etype) = istack;
2018 acargs->sym->type = copyLinkChain (acargs->type);
2019 acargs->sym->etype = getSpec (acargs->sym->type);
2020 acargs->sym->_isparm = 1;
2021 strncpyz (acargs->sym->rname, acargs->name, sizeof(acargs->sym->rname));
2022 } else if (strcmp(acargs->sym->name, acargs->sym->rname)==0) {
2024 werror(E_PARAM_NAME_OMITTED, sym->name, argCnt);
2029 if (!csym && !(csym = findSym (SymbolTab, sym, sym->name)))
2030 return 1; /* not defined nothing more to check */
2032 /* check if body already present */
2033 if (csym && IFFUNC_HASBODY(csym->type))
2035 werror (E_FUNC_BODY, sym->name);
2039 /* check the return value type */
2040 if (compareType (csym->type, sym->type) <= 0)
2042 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
2043 printFromToType(csym->type, sym->type);
2047 if (FUNC_ISISR (csym->type) != FUNC_ISISR (sym->type))
2049 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
2052 if (FUNC_REGBANK (csym->type) != FUNC_REGBANK (sym->type))
2054 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
2057 if (IFFUNC_ISNAKED (csym->type) != IFFUNC_ISNAKED (sym->type))
2059 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
2062 /* Really, reentrant should match regardless of argCnt, but */
2063 /* this breaks some existing code (the fp lib functions). If */
2064 /* the first argument is always passed the same way, this */
2065 /* lax checking is ok (but may not be true for in future ports) */
2066 if (IFFUNC_ISREENT (csym->type) != IFFUNC_ISREENT (sym->type)
2069 //printf("argCnt = %d\n",argCnt);
2070 werror (E_PREV_DEF_CONFLICT, csym->name, "reentrant");
2073 /* compare expected args with actual args */
2074 exargs = FUNC_ARGS(csym->type);
2075 acargs = FUNC_ARGS(sym->type);
2077 /* for all the expected args do */
2080 exargs = exargs->next, acargs = acargs->next, argCnt++)
2082 if (getenv("DEBUG_SANITY")) {
2083 fprintf (stderr, "checkFunction: %s ", exargs->name);
2085 /* make sure the type is complete and sane */
2086 checkTypeSanity(exargs->etype, exargs->name);
2088 /* If the actual argument is an array, any prototype
2089 * will have modified it to a pointer. Duplicate that
2092 if (IS_AGGREGATE (acargs->type))
2094 checkValue = copyValue (acargs);
2095 aggregateToPointer (checkValue);
2099 checkValue = acargs;
2102 if (compareType (exargs->type, checkValue->type) <= 0)
2104 werror (E_ARG_TYPE, argCnt);
2105 printFromToType(exargs->type, checkValue->type);
2110 /* if one them ended we have a problem */
2111 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
2112 (!exargs && acargs && !IS_VOID (acargs->type)))
2113 werror (E_ARG_COUNT);
2115 /* replace with this defition */
2116 sym->cdef = csym->cdef;
2117 deleteSym (SymbolTab, csym, csym->name);
2118 deleteFromSeg(csym);
2119 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
2120 if (IS_EXTERN (csym->etype) && !
2121 IS_EXTERN (sym->etype))
2123 addSet (&publics, sym);
2128 /*------------------------------------------------------------------*/
2129 /* cdbStructBlock - calls struct printing for a blcks */
2130 /*------------------------------------------------------------------*/
2131 void cdbStructBlock (int block)
2134 bucket **table = StructTab;
2137 /* go thru the entire table */
2138 for (i = 0; i < 256; i++)
2140 for (chain = table[i]; chain; chain = chain->next)
2142 if (chain->block >= block)
2145 debugFile->writeType((structdef *)chain->sym, chain->block, 0, NULL);
2151 /*-----------------------------------------------------------------*/
2152 /* processFuncArgs - does some processing with function args */
2153 /*-----------------------------------------------------------------*/
2155 processFuncArgs (symbol * func)
2159 sym_link *funcType=func->type;
2161 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
2162 fprintf (stderr, "SDCCsymt.c:processFuncArgs(%s)\n", func->name);
2164 // if this is a pointer to a function
2165 if (IS_PTR(funcType)) {
2166 funcType=funcType->next;
2169 /* if this function has variable argument list */
2170 /* then make the function a reentrant one */
2171 if (IFFUNC_HASVARARGS(funcType) || (options.stackAuto && !func->cdef))
2172 FUNC_ISREENT(funcType)=1;
2174 /* check if this function is defined as calleeSaves
2175 then mark it as such */
2176 FUNC_CALLEESAVES(funcType) = inCalleeSaveList (func->name);
2178 /* loop thru all the arguments */
2179 val = FUNC_ARGS(funcType);
2181 /* if it is void then remove parameters */
2182 if (val && IS_VOID (val->type))
2184 FUNC_ARGS(funcType) = NULL;
2188 /* reset regparm for the port */
2189 (*port->reset_regparms) ();
2190 /* if any of the arguments is an aggregate */
2191 /* change it to pointer to the same type */
2195 /* mark it as a register parameter if
2196 the function does not have VA_ARG
2197 and as port dictates */
2198 if (!IFFUNC_HASVARARGS(funcType) &&
2199 (argreg = (*port->reg_parm) (val->type)))
2201 SPEC_REGPARM (val->etype) = 1;
2202 SPEC_ARGREG(val->etype) = argreg;
2203 } else if (IFFUNC_ISREENT(funcType)) {
2204 FUNC_HASSTACKPARM(funcType) = 1;
2207 if (IS_AGGREGATE (val->type))
2209 aggregateToPointer (val);
2216 /* if this is an internal generated function call */
2218 /* ignore --stack-auto for this one, we don't know how it is compiled */
2219 /* simply trust on --int-long-reent or --float-reent */
2220 if (IFFUNC_ISREENT(funcType)) {
2224 /* if this function is reentrant or */
2225 /* automatics r 2b stacked then nothing */
2226 if (IFFUNC_ISREENT (funcType) || options.stackAuto)
2230 val = FUNC_ARGS(funcType);
2235 /* if a symbolname is not given */
2236 /* synthesize a variable name */
2239 SNPRINTF (val->name, sizeof(val->name),
2240 "_%s_PARM_%d", func->name, pNum++);
2241 val->sym = newSymbol (val->name, 1);
2242 SPEC_OCLS (val->etype) = port->mem.default_local_map;
2243 val->sym->type = copyLinkChain (val->type);
2244 val->sym->etype = getSpec (val->sym->type);
2245 val->sym->_isparm = 1;
2246 strncpyz (val->sym->rname, val->name, sizeof(val->sym->rname));
2248 /* ?? static functions shouldn't imply static parameters - EEP */
2249 if (IS_SPEC(func->etype)) {
2250 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
2251 SPEC_STAT (func->etype);
2254 addSymChain (val->sym);
2257 else /* symbol name given create synth name */
2260 SNPRINTF (val->name, sizeof(val->name), "_%s_PARM_%d", func->name, pNum++);
2261 strncpyz (val->sym->rname, val->name, sizeof(val->sym->rname));
2262 val->sym->_isparm = 1;
2263 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
2264 (options.model != MODEL_SMALL ? xdata : data);
2267 /* ?? static functions shouldn't imply static parameters - EEP */
2268 if (IS_SPEC(func->etype)) {
2269 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
2270 SPEC_STAT (func->etype);
2274 if (!isinSet(operKeyReset, val->sym)) {
2275 addSet (&operKeyReset, val->sym);
2276 applyToSet (operKeyReset, resetParmKey);
2282 /*-----------------------------------------------------------------*/
2283 /* isSymbolEqual - compares two symbols return 1 if they match */
2284 /*-----------------------------------------------------------------*/
2286 isSymbolEqual (symbol * dest, symbol * src)
2288 /* if pointers match then equal */
2292 /* if one of them is null then don't match */
2296 /* if both of them have rname match on rname */
2297 if (dest->rname[0] && src->rname[0])
2298 return (!strcmp (dest->rname, src->rname));
2300 /* otherwise match on name */
2301 return (!strcmp (dest->name, src->name));
2304 void PT(sym_link *type)
2306 printTypeChain(type,0);
2308 /*-----------------------------------------------------------------*/
2309 /* printTypeChain - prints the type chain in human readable form */
2310 /*-----------------------------------------------------------------*/
2312 printTypeChain (sym_link * start, FILE * of)
2316 sym_link * type, * search;
2326 fprintf (of, "void");
2330 /* Print the chain as it is written in the source: */
2331 /* start with the last entry. */
2332 /* However, the storage class at the end of the */
2333 /* chain reall applies to the first in the chain! */
2335 for (type = start; type && type->next; type = type->next)
2338 scls=SPEC_SCLS(type);
2346 case S_DATA: fprintf (of, "data-"); break;
2347 case S_XDATA: fprintf (of, "xdata-"); break;
2348 case S_SFR: fprintf (of, "sfr-"); break;
2349 case S_SBIT: fprintf (of, "sbit-"); break;
2350 case S_CODE: fprintf (of, "code-"); break;
2351 case S_IDATA: fprintf (of, "idata-"); break;
2352 case S_PDATA: fprintf (of, "pdata-"); break;
2353 case S_LITERAL: fprintf (of, "literal-"); break;
2354 case S_STACK: fprintf (of, "stack-"); break;
2355 case S_XSTACK: fprintf (of, "xstack-"); break;
2356 case S_BIT: fprintf (of, "bit-"); break;
2357 case S_EEPROM: fprintf (of, "eeprom-"); break;
2364 if (!IS_FUNC(type)) {
2365 if (DCL_PTR_VOLATILE (type)) {
2366 fprintf (of, "volatile-");
2368 if (DCL_PTR_CONST (type)) {
2369 fprintf (of, "const-");
2372 switch (DCL_TYPE (type))
2375 fprintf (of, "function %s %s",
2376 (IFFUNC_ISBUILTIN(type) ? "__builtin__" : " "),
2377 (IFFUNC_ISJAVANATIVE(type) ? "_JavaNative" : " "));
2379 for (args = FUNC_ARGS(type);
2382 printTypeChain(args->type, of);
2389 fprintf (of, "generic* ");
2392 fprintf (of, "code* ");
2395 fprintf (of, "xdata* ");
2398 fprintf (of, "eeprom* ");
2401 fprintf (of, "near* ");
2404 fprintf (of, "idata* ");
2407 fprintf (of, "pdata* ");
2410 fprintf (of, "unknown* ");
2413 if (DCL_ELEM(type)) {
2414 fprintf (of, "[%d] ", DCL_ELEM(type));
2416 fprintf (of, "[] ");
2423 if (SPEC_VOLATILE (type))
2424 fprintf (of, "volatile-");
2425 if (SPEC_CONST (type))
2426 fprintf (of, "const-");
2427 if (SPEC_USIGN (type))
2428 fprintf (of, "unsigned-");
2429 switch (SPEC_NOUN (type))
2433 fprintf (of, "long-");
2434 fprintf (of, "int");
2438 fprintf (of, "char");
2442 fprintf (of, "void");
2446 fprintf (of, "float");
2450 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2454 fprintf (of, "sbit");
2458 fprintf (of, "bit");
2462 fprintf (of, "bitfield {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2466 fprintf (of, "double");
2470 fprintf (of, "unknown type");
2474 /* search entry in list before "type" */
2475 for (search = start; search && search->next != type;)
2476 search = search->next;
2485 /*--------------------------------------------------------------------*/
2486 /* printTypeChainRaw - prints the type chain in human readable form */
2487 /* in the raw data structure ordering */
2488 /*--------------------------------------------------------------------*/
2490 printTypeChainRaw (sym_link * start, FILE * of)
2503 fprintf (of, "void");
2513 if (!IS_FUNC(type)) {
2514 if (DCL_PTR_VOLATILE (type)) {
2515 fprintf (of, "volatile-");
2517 if (DCL_PTR_CONST (type)) {
2518 fprintf (of, "const-");
2521 switch (DCL_TYPE (type))
2524 fprintf (of, "function %s %s",
2525 (IFFUNC_ISBUILTIN(type) ? "__builtin__" : " "),
2526 (IFFUNC_ISJAVANATIVE(type) ? "_JavaNative" : " "));
2528 for (args = FUNC_ARGS(type);
2531 printTypeChain(args->type, of);
2538 fprintf (of, "generic* ");
2541 fprintf (of, "code* ");
2544 fprintf (of, "xdata* ");
2547 fprintf (of, "eeprom* ");
2550 fprintf (of, "near* ");
2553 fprintf (of, "idata* ");
2556 fprintf (of, "pdata* ");
2559 fprintf (of, "unknown* ");
2562 if (DCL_ELEM(type)) {
2563 fprintf (of, "[%d] ", DCL_ELEM(type));
2565 fprintf (of, "[] ");
2569 if (DCL_TSPEC(type))
2572 printTypeChainRaw(DCL_TSPEC(type), of);
2576 else if (IS_SPEC (type))
2578 switch (SPEC_SCLS (type))
2580 case S_DATA: fprintf (of, "data-"); break;
2581 case S_XDATA: fprintf (of, "xdata-"); break;
2582 case S_SFR: fprintf (of, "sfr-"); break;
2583 case S_SBIT: fprintf (of, "sbit-"); break;
2584 case S_CODE: fprintf (of, "code-"); break;
2585 case S_IDATA: fprintf (of, "idata-"); break;
2586 case S_PDATA: fprintf (of, "pdata-"); break;
2587 case S_LITERAL: fprintf (of, "literal-"); break;
2588 case S_STACK: fprintf (of, "stack-"); break;
2589 case S_XSTACK: fprintf (of, "xstack-"); break;
2590 case S_BIT: fprintf (of, "bit-"); break;
2591 case S_EEPROM: fprintf (of, "eeprom-"); break;
2594 if (SPEC_VOLATILE (type))
2595 fprintf (of, "volatile-");
2596 if (SPEC_CONST (type))
2597 fprintf (of, "const-");
2598 if (SPEC_USIGN (type))
2599 fprintf (of, "unsigned-");
2600 switch (SPEC_NOUN (type))
2604 fprintf (of, "long-");
2605 fprintf (of, "int");
2609 fprintf (of, "char");
2613 fprintf (of, "void");
2617 fprintf (of, "float");
2621 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2625 fprintf (of, "sbit");
2629 fprintf (of, "bit");
2633 fprintf (of, "bitfield {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2637 fprintf (of, "double");
2641 fprintf (of, "unknown type");
2646 fprintf (of, "NOT_SPEC_OR_DECL");
2656 /*-----------------------------------------------------------------*/
2657 /* powof2 - returns power of two for the number if number is pow 2 */
2658 /*-----------------------------------------------------------------*/
2660 powof2 (TYPE_UDWORD num)
2673 if (n1s > 1 || nshifts == 0)
2689 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2690 symbol *__muldiv[3][3][2];
2691 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2692 sym_link *__multypes[3][2];
2693 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2694 symbol *__conv[2][3][2];
2695 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2696 symbol *__rlrr[2][3][2];
2698 sym_link *floatType;
2701 _mangleFunctionName(char *in)
2703 if (port->getMangledFunctionName)
2705 return port->getMangledFunctionName(in);
2713 /*-----------------------------------------------------------------*/
2714 /* typeFromStr - create a typechain from an encoded string */
2715 /* basic types - 'c' - char */
2721 /* '*' - pointer - default (GPOINTER) */
2722 /* modifiers - 'u' - unsigned */
2723 /* pointer modifiers - 'g' - generic */
2727 /* 'F' - function */
2728 /* examples : "ig*" - generic int * */
2729 /* "cx*" - char xdata * */
2730 /* "ui" - unsigned int */
2731 /*-----------------------------------------------------------------*/
2732 sym_link *typeFromStr (char *s)
2734 sym_link *r = newLink(DECLARATOR);
2746 r->class = SPECIFIER;
2747 SPEC_NOUN(r) = V_CHAR;
2751 r->class = SPECIFIER;
2752 SPEC_NOUN(r) = V_INT;
2755 r->class = SPECIFIER;
2756 SPEC_NOUN(r) = V_INT;
2760 r->class = SPECIFIER;
2761 SPEC_NOUN(r) = V_FLOAT;
2764 r->class = SPECIFIER;
2765 SPEC_NOUN(r) = V_VOID;
2768 DCL_TYPE(r) = port->unqualified_pointer;
2775 assert(*(s+1)=='*');
2776 nr = newLink(DECLARATOR);
2781 DCL_TYPE(r) = GPOINTER;
2784 DCL_TYPE(r) = FPOINTER;
2787 DCL_TYPE(r) = CPOINTER;
2790 DCL_TYPE(r) = POINTER;
2793 DCL_TYPE(r) = FUNCTION;
2794 nr = newLink(DECLARATOR);
2797 DCL_TYPE(r) = CPOINTER;
2803 werror(E_INTERNAL_ERROR, __FILE__, __LINE__,
2804 "typeFromStr: unknown type");
2807 if (IS_SPEC(r) && usign) {
2816 /*-----------------------------------------------------------------*/
2817 /* initCSupport - create functions for C support routines */
2818 /*-----------------------------------------------------------------*/
2822 const char *smuldivmod[] =
2826 const char *sbwd[] =
2828 "char", "int", "long"
2834 const char *srlrr[] =
2839 int bwd, su, muldivmod, tofrom, rlrr;
2841 if (getenv("SDCC_NO_C_SUPPORT")) {
2842 /* for debugging only */
2846 floatType = newFloatLink ();
2848 for (bwd = 0; bwd < 3; bwd++)
2865 __multypes[bwd][0] = l;
2866 __multypes[bwd][1] = copyLinkChain (l);
2867 SPEC_USIGN (__multypes[bwd][1]) = 1;
2870 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2871 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2872 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2873 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2874 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2875 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2876 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2877 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2878 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2879 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2881 for (tofrom = 0; tofrom < 2; tofrom++)
2883 for (bwd = 0; bwd < 3; bwd++)
2885 for (su = 0; su < 2; su++)
2889 SNPRINTF (buffer, sizeof(buffer), "__fs2%s%s", ssu[su], sbwd[bwd]);
2890 __conv[tofrom][bwd][su] = funcOfType (buffer, __multypes[bwd][su], floatType, 1, options.float_rent);
2894 SNPRINTF (buffer, sizeof(buffer), "__%s%s2fs", ssu[su], sbwd[bwd]);
2895 __conv[tofrom][bwd][su] = funcOfType (buffer, floatType, __multypes[bwd][su], 1, options.float_rent);
2902 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2904 for (bwd = 0; bwd < 3; bwd++)
2906 for (su = 0; su < 2; su++)
2908 SNPRINTF (buffer, sizeof(buffer),
2910 smuldivmod[muldivmod],
2913 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2914 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2919 muluint() and mulsint() resp. mululong() and mulslong() return the same result.
2920 Therefore they've been merged into mulint() and mullong().
2923 for (bwd = 0; bwd < 3; bwd++)
2925 for (su = 0; su < 2; su++)
2927 for (muldivmod = 1; muldivmod < 3; muldivmod++)
2930 SNPRINTF (buffer, sizeof(buffer),
2932 smuldivmod[muldivmod],
2935 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2936 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2944 for (su = 0; su < 2; su++)
2946 /* muluchar and mulschar are still separate functions, because e.g. the z80
2947 port is sign/zero-extending to int before calling mulint() */
2948 SNPRINTF (buffer, sizeof(buffer),
2950 smuldivmod[muldivmod],
2953 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2954 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2958 /* word and doubleword */
2959 for (bwd = 1; bwd < 3; bwd++)
2962 SNPRINTF (buffer, sizeof(buffer),
2964 smuldivmod[muldivmod],
2966 __muldiv[muldivmod][bwd][0] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2967 FUNC_NONBANKED (__muldiv[muldivmod][bwd][0]->type) = 1;
2968 /* signed = unsigned */
2969 __muldiv[muldivmod][bwd][1] = __muldiv[muldivmod][bwd][0];
2972 for (rlrr = 0; rlrr < 2; rlrr++)
2974 for (bwd = 0; bwd < 3; bwd++)
2976 for (su = 0; su < 2; su++)
2978 SNPRINTF (buffer, sizeof(buffer),
2983 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2984 FUNC_NONBANKED (__rlrr[rlrr][bwd][su]->type) = 1;
2990 /*-----------------------------------------------------------------*/
2991 /* initBuiltIns - create prototypes for builtin functions */
2992 /*-----------------------------------------------------------------*/
2998 if (!port->builtintable) return ;
3000 for (i = 0 ; port->builtintable[i].name ; i++) {
3001 sym = funcOfTypeVarg(port->builtintable[i].name,port->builtintable[i].rtype,
3002 port->builtintable[i].nParms,port->builtintable[i].parm_types);
3003 FUNC_ISBUILTIN(sym->type) = 1;
3004 FUNC_ISREENT(sym->type) = 0; /* can never be reentrant */
3008 sym_link *validateLink(sym_link *l,
3015 if (l && l->class==select)
3020 "Internal error: validateLink failed in %s(%s) @ %s:%u:"
3021 " expected %s, got %s\n",
3022 macro, args, file, line,
3023 DECLSPEC2TXT(select), l ? DECLSPEC2TXT(l->class) : "null-link");
3025 return l; // never reached, makes compiler happy.
3028 /*--------------------------------------------------------------------*/
3029 /* newEnumType - create an integer type compatible with enumerations */
3030 /*--------------------------------------------------------------------*/
3032 newEnumType (symbol *enumlist)
3040 type = newLink (SPECIFIER);
3041 SPEC_NOUN (type) = V_INT;
3045 /* Determine the range of the enumerated values */
3047 min = max = (int) floatFromVal (valFromType (sym->type));
3048 for (sym = sym->next; sym; sym = sym->next)
3050 v = (int) floatFromVal (valFromType (sym->type));
3057 /* Determine the smallest integer type that is compatible with this range */
3058 type = newLink (SPECIFIER);
3059 if (min>=0 && max<=255)
3061 SPEC_NOUN (type) = V_CHAR;
3062 SPEC_USIGN (type) = 1;
3064 else if (min>=-128 && max<=127)
3066 SPEC_NOUN (type) = V_CHAR;
3068 else if (min>=0 && max<=65535)
3070 SPEC_NOUN (type) = V_INT;
3071 SPEC_USIGN (type) = 1;
3073 else if (min>=-32768 && max<=32767)
3075 SPEC_NOUN (type) = V_INT;
3079 SPEC_NOUN (type) = V_INT;
3080 SPEC_LONG (type) = 1;
3082 SPEC_USIGN (type) = 1;