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);
29 void printFromToType(sym_link *from, sym_link *to) {
30 fprintf (stderr, "from type '");
31 printTypeChain (from, stderr);
32 fprintf (stderr, "'\nto type '");
33 printTypeChain (to, stderr);
34 fprintf (stderr, "'\n");
38 char *nounName(sym_link *sl) {
39 switch (SPEC_NOUN(sl))
42 if (SPEC_LONG(sl)) return "long";
43 if (sl->select.s._short) return "short";
46 case V_FLOAT: return "float";
47 case V_CHAR: return "char";
48 case V_VOID: return "void";
49 case V_STRUCT: return "struct";
50 case V_LABEL: return "label";
51 case V_BIT: return "bit";
52 case V_SBIT: return "sbit";
53 case V_DOUBLE: return "double";
58 bucket *SymbolTab[256]; /* the symbol table */
59 bucket *StructTab[256]; /* the structure table */
60 bucket *TypedefTab[256]; /* the typedef table */
61 bucket *LabelTab[256]; /* the Label table */
62 bucket *enumTab[256]; /* enumerated table */
64 /*------------------------------------------------------------------*/
65 /* initSymt () - initialises symbol table related stuff */
66 /*------------------------------------------------------------------*/
72 for (i = 0; i < 256; i++)
73 SymbolTab[i] = StructTab[i] = (void *) NULL;
77 /*-----------------------------------------------------------------*/
78 /* newBucket - allocates & returns a new bucket */
79 /*-----------------------------------------------------------------*/
85 bp = Safe_alloc ( sizeof (bucket));
90 /*-----------------------------------------------------------------*/
91 /* hashKey - computes the hashkey given a symbol name */
92 /*-----------------------------------------------------------------*/
94 hashKey (const char *s)
96 unsigned long key = 0;
103 /*-----------------------------------------------------------------*/
104 /* addSym - adds a symbol to the hash Table */
105 /*-----------------------------------------------------------------*/
107 addSym (bucket ** stab,
114 int i; /* index into the hash Table */
115 bucket *bp; /* temp bucket * */
118 symbol *csym = (symbol *)sym;
120 if (getenv("DEBUG_SANITY")) {
121 fprintf (stderr, "addSym: %s ", sname);
123 /* make sure the type is complete and sane */
124 checkTypeSanity(csym->etype, csym->name);
127 /* prevent overflow of the (r)name buffers */
128 if (strlen(sname)>SDCC_SYMNAME_MAX) {
129 werror (W_SYMBOL_NAME_TOO_LONG, SDCC_SYMNAME_MAX);
130 sname[SDCC_SYMNAME_MAX]='\0';
133 /* the symbols are always added at the head of the list */
135 /* get a free entry */
136 bp = Safe_alloc ( sizeof (bucket));
138 bp->sym = sym; /* update the symbol pointer */
139 bp->level = level; /* update the nest level */
141 strncpyz (bp->name, sname, sizeof(bp->name)); /* copy the name into place */
143 /* if this is the first entry */
146 bp->prev = bp->next = (void *) NULL; /* point to nothing */
149 /* not first entry then add @ head of list */
159 /*-----------------------------------------------------------------*/
160 /* deleteSym - deletes a symbol from the hash Table entry */
161 /*-----------------------------------------------------------------*/
163 deleteSym (bucket ** stab, void *sym, char *sname)
171 /* find the symbol */
174 if (bp->sym == sym) /* found it then break out */
175 break; /* of the loop */
179 if (!bp) /* did not find it */
181 /* if this is the first one in the chain */
185 if (stab[i]) /* if chain ! empty */
186 stab[i]->prev = (void *) NULL;
188 /* middle || end of chain */
191 if (bp->next) /* if not end of chain */
192 bp->next->prev = bp->prev;
194 bp->prev->next = bp->next;
199 /*-----------------------------------------------------------------*/
200 /* findSym - finds a symbol in a table */
201 /*-----------------------------------------------------------------*/
203 findSym (bucket ** stab, void *sym, const char *sname)
207 bp = stab[hashKey (sname)];
210 if (bp->sym == sym || strcmp (bp->name, sname) == 0)
215 return (bp ? bp->sym : (void *) NULL);
218 /*-----------------------------------------------------------------*/
219 /* findSymWithLevel - finds a symbol with a name & level */
220 /*-----------------------------------------------------------------*/
222 findSymWithLevel (bucket ** stab, symbol * sym)
226 bp = stab[hashKey (sym->name)];
229 ** do the search from the head of the list since the
230 ** elements are added at the head it is ensured that
231 ** we will find the deeper definitions before we find
232 ** the global ones. we need to check for symbols with
233 ** level <= to the level given, if levels match then block
234 ** numbers need to match as well
238 if (strcmp (bp->name, sym->name) == 0 && bp->level <= sym->level)
240 /* if this is parameter then nothing else need to be checked */
241 if (((symbol *) (bp->sym))->_isparm)
243 /* if levels match then block numbers should also match */
244 if (bp->level && bp->level == sym->level && bp->block == sym->block)
246 /* if levels don't match then we are okay */
247 if (bp->level && bp->level != sym->level && bp->block <= sym->block)
249 /* if this is a global variable then we are ok too */
257 return (void *) NULL;
260 /*-----------------------------------------------------------------*/
261 /* findSymWithBlock - finds a symbol with name in with a block */
262 /*-----------------------------------------------------------------*/
264 findSymWithBlock (bucket ** stab, symbol * sym, int block)
268 bp = stab[hashKey (sym->name)];
271 if (strcmp (bp->name, sym->name) == 0 &&
277 return (bp ? bp->sym : (void *) NULL);
280 /*------------------------------------------------------------------*/
281 /* newSymbol () - returns a new pointer to a symbol */
282 /*------------------------------------------------------------------*/
284 newSymbol (char *name, int scope)
288 sym = Safe_alloc ( sizeof (symbol));
290 strncpyz (sym->name, name, sizeof(sym->name)); /* copy the name */
291 sym->level = scope; /* set the level */
292 sym->block = currBlockno;
293 sym->lineDef = yylineno; /* set the line number */
297 /*------------------------------------------------------------------*/
298 /* newLink - creates a new link (declarator,specifier) */
299 /*------------------------------------------------------------------*/
305 p = Safe_alloc ( sizeof (sym_link));
310 /*------------------------------------------------------------------*/
311 /* newStruct - creats a new structdef from the free list */
312 /*------------------------------------------------------------------*/
314 newStruct (char *tag)
318 s = Safe_alloc ( sizeof (structdef));
320 strncpyz (s->tag, tag, sizeof(s->tag)); /* copy the tag */
324 /*------------------------------------------------------------------*/
325 /* pointerTypes - do the computation for the pointer types */
326 /*------------------------------------------------------------------*/
328 pointerTypes (sym_link * ptr, sym_link * type)
333 /* find the first pointer type */
334 while (ptr && !IS_PTR (ptr))
337 /* could not find it */
338 if (!ptr || IS_SPEC (ptr))
341 if (IS_PTR(ptr) && DCL_TYPE(ptr)!=UPOINTER) {
342 pointerTypes (ptr->next, type);
346 /* change the pointer type depending on the
347 storage class of the type */
350 DCL_PTR_CONST (ptr) = SPEC_CONST (type);
351 DCL_PTR_VOLATILE (ptr) = SPEC_VOLATILE (type);
352 switch (SPEC_SCLS (type))
355 DCL_TYPE (ptr) = FPOINTER;
358 DCL_TYPE (ptr) = IPOINTER;
361 DCL_TYPE (ptr) = PPOINTER;
364 DCL_TYPE (ptr) = POINTER;
367 DCL_PTR_CONST (ptr) = port->mem.code_ro;
368 DCL_TYPE (ptr) = CPOINTER;
371 DCL_TYPE (ptr) = EEPPOINTER;
374 DCL_TYPE (ptr) = port->unqualified_pointer;
377 /* the storage class of type ends here */
380 SPEC_VOLATILE (type) = 0;
383 /* now change all the remaining unknown pointers
384 to generic pointers */
387 if (!IS_SPEC (ptr) && DCL_TYPE (ptr) == UPOINTER)
388 DCL_TYPE (ptr) = port->unqualified_pointer;
392 /* same for the type although it is highly unlikely that
393 type will have a pointer */
396 if (!IS_SPEC (type) && DCL_TYPE (type) == UPOINTER)
397 DCL_TYPE (type) = port->unqualified_pointer;
403 /*------------------------------------------------------------------*/
404 /* addDecl - adds a declarator @ the end of a chain */
405 /*------------------------------------------------------------------*/
407 addDecl (symbol * sym, int type, sym_link * p)
413 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
414 fprintf (stderr, "SDCCsymt.c:addDecl(%s,%d,%p)\n", sym->name, type, p);
416 /* if we are passed a link then set head & tail */
425 head = tail = newLink ();
426 DCL_TYPE (head) = type;
429 /* if this is the first entry */
437 if (IS_SPEC (sym->etype) && IS_SPEC (head) && head == tail)
439 sym->etype = mergeSpec (sym->etype, head, sym->name);
443 if (IS_SPEC (sym->etype) && !IS_SPEC (head) && head == tail)
446 while (t->next != sym->etype)
449 tail->next = sym->etype;
453 sym->etype->next = head;
459 /* if the type is an unknown pointer and has
460 a tspec then take the storage class const & volatile
461 attribute from the tspec & make it those of this
465 //DCL_TYPE (p) == UPOINTER &&
468 if (!IS_SPEC (sym->etype))
470 sym->etype = sym->etype->next = newLink ();
471 sym->etype->class = SPECIFIER;
473 SPEC_SCLS (sym->etype) = SPEC_SCLS (DCL_TSPEC (p));
474 SPEC_CONST (sym->etype) = SPEC_CONST (DCL_TSPEC (p));
475 SPEC_VOLATILE (sym->etype) = SPEC_VOLATILE (DCL_TSPEC (p));
476 DCL_TSPEC (p) = NULL;
479 // if there is a function in this type chain
480 if (p && funcInChain(sym->type)) {
481 processFuncArgs (sym);
487 /*------------------------------------------------------------------
488 checkTypeSanity: prevent the user from doing e.g.:
490 ------------------------------------------------------------------*/
491 void checkTypeSanity(sym_link *etype, char *name) {
495 if (getenv("DEBUG_SANITY")) {
496 fprintf (stderr, "sanity check skipped for %s (etype==0)\n", name);
501 if (!IS_SPEC(etype)) {
502 if (getenv("DEBUG_SANITY")) {
503 fprintf (stderr, "sanity check skipped for %s (!IS_SPEC)\n", name);
508 noun=nounName(etype);
510 if (getenv("DEBUG_SANITY")) {
511 fprintf (stderr, "checking sanity for %s %p\n", name, etype);
514 if ((SPEC_NOUN(etype)==V_CHAR ||
515 SPEC_NOUN(etype)==V_FLOAT ||
516 SPEC_NOUN(etype)==V_DOUBLE ||
517 SPEC_NOUN(etype)==V_VOID) &&
518 (etype->select.s._short || SPEC_LONG(etype))) {
519 // long or short for char float double or void
520 werror (E_LONG_OR_SHORT_INVALID, noun, name);
522 if ((SPEC_NOUN(etype)==V_FLOAT ||
523 SPEC_NOUN(etype)==V_DOUBLE ||
524 SPEC_NOUN(etype)==V_VOID) &&
525 (etype->select.s._signed || SPEC_USIGN(etype))) {
526 // signed or unsigned for float double or void
527 werror (E_SIGNED_OR_UNSIGNED_INVALID, noun, name);
530 // special case for "short"
531 if (etype->select.s._short) {
532 SPEC_NOUN(etype) = options.shortis8bits ? V_CHAR : V_INT;
533 etype->select.s._short = 0;
537 "const a;" or "data b;" or "signed s" or "long l"
539 if (!SPEC_NOUN(etype)) {
540 SPEC_NOUN(etype)=V_INT;
543 if (etype->select.s._signed && SPEC_USIGN(etype)) {
544 // signed AND unsigned
545 werror (E_SIGNED_AND_UNSIGNED_INVALID, noun, name);
547 if (etype->select.s._short && SPEC_LONG(etype)) {
549 werror (E_LONG_AND_SHORT_INVALID, noun, name);
554 /*------------------------------------------------------------------*/
555 /* mergeSpec - merges two specifiers and returns the new one */
556 /*------------------------------------------------------------------*/
558 mergeSpec (sym_link * dest, sym_link * src, char *name)
560 sym_link *symlink=dest;
562 if (!IS_SPEC(dest) || !IS_SPEC(src)) {
564 werror (E_INTERNAL_ERROR, __FILE__, __LINE__, "cannot merge declarator");
567 werror (E_SYNTAX_ERROR, yytext);
568 // the show must go on
573 if (SPEC_NOUN(src)) {
574 if (!SPEC_NOUN(dest)) {
575 SPEC_NOUN(dest)=SPEC_NOUN(src);
577 /* we shouldn't redeclare the type */
578 if (getenv("DEBUG_SANITY")) {
579 fprintf (stderr, "mergeSpec: ");
581 werror(E_TWO_OR_MORE_DATA_TYPES, name);
585 if (SPEC_SCLS(src)) {
586 /* if destination has no storage class */
587 if (!SPEC_SCLS (dest) || SPEC_SCLS(dest)==S_REGISTER) {
588 SPEC_SCLS (dest) = SPEC_SCLS (src);
590 if (getenv("DEBUG_SANITY")) {
591 fprintf (stderr, "mergeSpec: ");
593 werror(E_TWO_OR_MORE_STORAGE_CLASSES, name);
597 /* copy all the specifications */
599 // we really should do:
601 if (SPEC_what(src)) {
602 if (SPEC_what(dest)) {
603 werror(W_DUPLICATE_SPEC, "what");
605 SPEC_what(dst)|=SPEC_what(src);
608 // but there are more important thing right now
610 SPEC_LONG (dest) |= SPEC_LONG (src);
611 dest->select.s._short|=src->select.s._short;
612 SPEC_USIGN (dest) |= SPEC_USIGN (src);
613 dest->select.s._signed|=src->select.s._signed;
614 SPEC_STAT (dest) |= SPEC_STAT (src);
615 SPEC_EXTR (dest) |= SPEC_EXTR (src);
616 SPEC_CONST(dest) |= SPEC_CONST (src);
617 SPEC_ABSA (dest) |= SPEC_ABSA (src);
618 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
619 SPEC_ADDR (dest) |= SPEC_ADDR (src);
620 SPEC_OCLS (dest) = SPEC_OCLS (src);
621 SPEC_BLEN (dest) |= SPEC_BLEN (src);
622 SPEC_BSTR (dest) |= SPEC_BSTR (src);
623 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
624 SPEC_ENUM (dest) |= SPEC_ENUM (src);
625 if (SPEC_ARGREG(src) && !SPEC_ARGREG(dest))
626 SPEC_ARGREG(dest) = SPEC_ARGREG(src);
628 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
629 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
631 /* these are the only function attributes that will be set
632 in a specifier while parsing */
633 FUNC_NONBANKED(dest) |= FUNC_NONBANKED(src);
634 FUNC_BANKED(dest) |= FUNC_BANKED(src);
635 FUNC_ISCRITICAL(dest) |= FUNC_ISCRITICAL(src);
636 FUNC_ISREENT(dest) |= FUNC_ISREENT(src);
637 FUNC_ISNAKED(dest) |= FUNC_ISNAKED(src);
638 FUNC_ISISR(dest) |= FUNC_ISISR(src);
639 FUNC_ISJAVANATIVE(dest) |= FUNC_ISJAVANATIVE(src);
640 FUNC_ISBUILTIN(dest) |= FUNC_ISBUILTIN(src);
641 FUNC_ISOVERLAY(dest) |= FUNC_ISOVERLAY(src);
642 FUNC_INTNO(dest) |= FUNC_INTNO(src);
643 FUNC_REGBANK(dest) |= FUNC_REGBANK(src);
648 /*------------------------------------------------------------------*/
649 /* cloneSpec - copies the entire spec and returns a new spec */
650 /*------------------------------------------------------------------*/
652 cloneSpec (sym_link * src)
656 /* go thru chain till we find the specifier */
657 while (src && src->class != SPECIFIER)
661 memcpy (spec, src, sizeof (sym_link));
665 /*------------------------------------------------------------------*/
666 /* genSymName - generates and returns a name used for anonymous vars */
667 /*------------------------------------------------------------------*/
669 genSymName (int level)
671 static int gCount = 0;
672 static char gname[SDCC_NAME_MAX + 1];
674 SNPRINTF (gname, sizeof(gname), "__%04d%04d", level, gCount++);
678 /*------------------------------------------------------------------*/
679 /* getSpec - returns the specifier part from a declaration chain */
680 /*------------------------------------------------------------------*/
682 getSpec (sym_link * p)
687 while (p && !(IS_SPEC (p)))
693 /*------------------------------------------------------------------*/
694 /* newCharLink() - creates an char type */
695 /*------------------------------------------------------------------*/
702 p->class = SPECIFIER;
703 SPEC_NOUN (p) = V_CHAR;
708 /*------------------------------------------------------------------*/
709 /* newFloatLink - a new Float type */
710 /*------------------------------------------------------------------*/
717 p->class = SPECIFIER;
718 SPEC_NOUN (p) = V_FLOAT;
723 /*------------------------------------------------------------------*/
724 /* newLongLink() - new long type */
725 /*------------------------------------------------------------------*/
732 p->class = SPECIFIER;
733 SPEC_NOUN (p) = V_INT;
739 /*------------------------------------------------------------------*/
740 /* newIntLink() - creates an int type */
741 /*------------------------------------------------------------------*/
748 p->class = SPECIFIER;
749 SPEC_NOUN (p) = V_INT;
754 /*------------------------------------------------------------------*/
755 /* getSize - returns size of a type chain in bits */
756 /*------------------------------------------------------------------*/
758 getSize (sym_link * p)
760 /* if nothing return 0 */
764 { /* if this is the specifier then */
765 switch (SPEC_NOUN (p))
766 { /* depending on the specifier type */
768 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
776 return SPEC_STRUCT (p)->size;
782 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
788 /* this is a specifier */
789 switch (DCL_TYPE (p))
793 return DCL_ELEM (p) * getSize (p->next);
795 // werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
796 // "can not tell the size of an array[]");
816 /*------------------------------------------------------------------*/
817 /* bitsForType - returns # of bits required to store this type */
818 /*------------------------------------------------------------------*/
820 bitsForType (sym_link * p)
822 /* if nothing return 0 */
827 { /* if this is the specifier then */
829 switch (SPEC_NOUN (p))
830 { /* depending on the specifier type */
832 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
834 return FLOATSIZE * 8;
840 return SPEC_STRUCT (p)->size * 8;
846 return SPEC_BLEN (p);
852 /* this is a specifier */
853 switch (DCL_TYPE (p))
856 return DCL_ELEM (p) * getSize (p->next) * 8;
860 return (PTRSIZE * 8);
865 return (FPTRSIZE * 8);
867 return (GPTRSIZE * 8);
874 /*------------------------------------------------------------------*/
875 /* copySymbolChain - copies a symbol chain */
876 /*------------------------------------------------------------------*/
878 copySymbolChain (symbol * src)
885 dest = copySymbol (src);
886 dest->next = copySymbolChain (src->next);
890 /*------------------------------------------------------------------*/
891 /* copySymbol - makes a copy of a symbol */
892 /*------------------------------------------------------------------*/
894 copySymbol (symbol * src)
901 dest = newSymbol (src->name, src->level);
902 memcpy (dest, src, sizeof (symbol));
903 dest->level = src->level;
904 dest->block = src->block;
905 dest->ival = copyIlist (src->ival);
906 dest->type = copyLinkChain (src->type);
907 dest->etype = getSpec (dest->type);
909 dest->key = src->key;
910 dest->allocreq = src->allocreq;
914 /*------------------------------------------------------------------*/
915 /* reverseSyms - reverses the links for a symbol chain */
916 /*------------------------------------------------------------------*/
918 reverseSyms (symbol * sym)
920 symbol *prev, *curr, *next;
935 sym->next = (void *) NULL;
939 /*------------------------------------------------------------------*/
940 /* reverseLink - reverses the links for a type chain */
941 /*------------------------------------------------------------------*/
943 reverseLink (sym_link * type)
945 sym_link *prev, *curr, *next;
960 type->next = (void *) NULL;
964 /*------------------------------------------------------------------*/
965 /* addSymChain - adds a symbol chain to the symboltable */
966 /*------------------------------------------------------------------*/
968 addSymChain (symbol * symHead)
970 symbol *sym = symHead;
973 for (; sym != NULL; sym = sym->next)
976 checkTypeSanity(sym->etype, sym->name);
978 /* if already exists in the symbol table then check if
979 one of them is an extern definition if yes then
980 then check if the type match, if the types match then
981 delete the current entry and add the new entry */
982 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
983 csym->level == sym->level) {
985 /* one definition extern ? */
986 if (IS_EXTERN (csym->etype) || IS_EXTERN (sym->etype)) {
987 /* do types match ? */
988 if (compareType (csym->type, sym->type) != 1) {
990 werror (E_EXTERN_MISMATCH, csym->name);
995 if (compareType (csym->type, sym->type) != 1) {
996 werror (E_DUPLICATE, sym->name);
1000 /* delete current entry */
1001 deleteSym (SymbolTab, csym, csym->name);
1002 deleteFromSeg(csym);
1006 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1011 /*------------------------------------------------------------------*/
1012 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
1013 /*------------------------------------------------------------------*/
1015 funcInChain (sym_link * lnk)
1026 /*------------------------------------------------------------------*/
1027 /* structElemType - returns the type info of a sturct member */
1028 /*------------------------------------------------------------------*/
1030 structElemType (sym_link * stype, value * id)
1032 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
1033 sym_link *type, *etype;
1034 sym_link *petype = getSpec (stype);
1038 /* look for the id */
1041 if (strcmp (fields->rname, id->name) == 0)
1043 type = copyLinkChain (fields->type);
1044 etype = getSpec (type);
1045 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1046 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1049 fields = fields->next;
1053 werror (E_NOT_MEMBER, id->name);
1055 // the show must go on
1056 return newIntLink();
1059 /*------------------------------------------------------------------*/
1060 /* getStructElement - returns element of a tructure definition */
1061 /*------------------------------------------------------------------*/
1063 getStructElement (structdef * sdef, symbol * sym)
1067 for (field = sdef->fields; field; field = field->next)
1068 if (strcmp (field->name, sym->name) == 0)
1071 werror (E_NOT_MEMBER, sym->name);
1073 return sdef->fields;
1076 /*------------------------------------------------------------------*/
1077 /* compStructSize - computes the size of a structure */
1078 /*------------------------------------------------------------------*/
1080 compStructSize (int su, structdef * sdef)
1082 int sum = 0, usum = 0;
1086 /* for the identifiers */
1087 loop = sdef->fields;
1090 /* create the internal name for this variable */
1091 SNPRINTF (loop->rname, sizeof(loop->rname), "_%s", loop->name);
1092 loop->offset = (su == UNION ? sum = 0 : sum);
1093 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1095 /* if this is a bit field */
1098 /* change it to a unsigned bit */
1099 SPEC_NOUN (loop->etype) = V_BIT;
1100 SPEC_USIGN (loop->etype) = 1;
1101 /* check if this fit into the remaining */
1102 /* bits of this byte else align it to the */
1103 /* next byte boundary */
1104 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1105 SPEC_BSTR (loop->etype) = bitOffset;
1106 if ((bitOffset += (loop->bitVar % 8)) == 8)
1109 else /* does not fit */ {
1111 SPEC_BSTR (loop->etype) = bitOffset;
1112 sum += (loop->bitVar / 8);
1113 bitOffset += (loop->bitVar % 8);
1115 /* if this is the last field then pad */
1116 if (!loop->next && bitOffset && bitOffset != 8) {
1122 checkDecl (loop, 1);
1123 sum += getSize (loop->type);
1128 /* if this is not a bitfield but the */
1129 /* previous one was and did not take */
1130 /* the whole byte then pad the rest */
1131 if ((loop && !loop->bitVar) && bitOffset) {
1136 /* if union then size = sizeof larget field */
1138 usum = max (usum, sum);
1142 return (su == UNION ? usum : sum);
1145 /*------------------------------------------------------------------*/
1146 /* checkSClass - check the storage class specification */
1147 /*------------------------------------------------------------------*/
1149 checkSClass (symbol * sym, int isProto)
1151 if (getenv("DEBUG_SANITY")) {
1152 fprintf (stderr, "checkSClass: %s \n", sym->name);
1155 /* type is literal can happen foe enums change
1157 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1158 SPEC_SCLS (sym->etype) = S_AUTO;
1160 /* if sfr or sbit then must also be */
1161 /* volatile the initial value will be xlated */
1162 /* to an absolute address */
1163 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1164 SPEC_SCLS (sym->etype) == S_SFR)
1166 SPEC_VOLATILE (sym->etype) = 1;
1167 /* if initial value given */
1170 SPEC_ABSA (sym->etype) = 1;
1171 SPEC_ADDR (sym->etype) =
1172 (int) list2int (sym->ival);
1177 /* if absolute address given then it mark it as
1178 volatile -- except in the PIC port */
1180 #if !OPT_DISABLE_PIC
1181 /* The PIC port uses a different peep hole optimizer based on "pCode" */
1185 if (IS_ABSOLUTE (sym->etype))
1186 SPEC_VOLATILE (sym->etype) = 1;
1189 /* global variables declared const put into code */
1190 /* if no other storage class specified */
1191 if (sym->level == 0 &&
1192 SPEC_CONST (sym->etype) &&
1193 SPEC_SCLS(sym->etype) == S_FIXED) {
1194 SPEC_SCLS (sym->etype) = S_CODE;
1197 /* global variable in code space is a constant */
1198 if (sym->level == 0 &&
1199 SPEC_SCLS (sym->etype) == S_CODE &&
1201 SPEC_CONST (sym->etype) = 1;
1204 /* if bit variable then no storage class can be */
1205 /* specified since bit is already a storage */
1206 if (IS_BITVAR (sym->etype) &&
1207 (SPEC_SCLS (sym->etype) != S_FIXED &&
1208 SPEC_SCLS (sym->etype) != S_SBIT &&
1209 SPEC_SCLS (sym->etype) != S_BIT)
1212 werror (E_BITVAR_STORAGE, sym->name);
1213 SPEC_SCLS (sym->etype) = S_FIXED;
1216 /* extern variables cannot be initialized */
1217 if (IS_EXTERN (sym->etype) && sym->ival)
1219 werror (E_EXTERN_INIT, sym->name);
1223 /* if this is an atomatic symbol */
1224 if (sym->level && (options.stackAuto || reentrant)) {
1225 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1226 SPEC_SCLS (sym->etype) == S_FIXED ||
1227 SPEC_SCLS (sym->etype) == S_REGISTER ||
1228 SPEC_SCLS (sym->etype) == S_STACK ||
1229 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1230 SPEC_SCLS (sym->etype) = S_AUTO;
1232 /* storage class may only be specified for statics */
1233 if (!IS_STATIC(sym->etype)) {
1234 werror (E_AUTO_ASSUMED, sym->name);
1239 /* automatic symbols cannot be given */
1240 /* an absolute address ignore it */
1242 SPEC_ABSA (sym->etype) &&
1243 (options.stackAuto || reentrant))
1245 werror (E_AUTO_ABSA, sym->name);
1246 SPEC_ABSA (sym->etype) = 0;
1249 /* arrays & pointers cannot be defined for bits */
1250 /* SBITS or SFRs or BIT */
1251 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1252 (SPEC_NOUN (sym->etype) == V_BIT ||
1253 SPEC_NOUN (sym->etype) == V_SBIT ||
1254 SPEC_SCLS (sym->etype) == S_SFR))
1255 werror (E_BIT_ARRAY, sym->name);
1257 /* if this is a bit|sbit then set length & start */
1258 if (SPEC_NOUN (sym->etype) == V_BIT ||
1259 SPEC_NOUN (sym->etype) == V_SBIT)
1261 SPEC_BLEN (sym->etype) = 1;
1262 SPEC_BSTR (sym->etype) = 0;
1266 /* variables declared in CODE space must have */
1267 /* initializers if not an extern */
1268 if (SPEC_SCLS (sym->etype) == S_CODE &&
1269 sym->ival == NULL &&
1271 port->mem.code_ro &&
1272 !IS_EXTERN (sym->etype) &&
1273 !funcInChain (sym->type))
1274 werror (E_CODE_NO_INIT, sym->name);
1277 /* if parameter or local variable then change */
1278 /* the storage class to reflect where the var will go */
1279 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1280 !IS_STATIC(sym->etype))
1282 if (options.stackAuto || (currFunc && IFFUNC_ISREENT (currFunc->type)))
1284 SPEC_SCLS (sym->etype) = (options.useXstack ?
1285 S_XSTACK : S_STACK);
1289 /* hack-o-matic! I see no reason why the useXstack option should ever
1290 * control this allcoation, but the code was originally that way, and
1291 * changing it for non-390 ports breaks the compiler badly.
1293 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1294 SPEC_SCLS (sym->etype) = (useXdata ?
1300 /*------------------------------------------------------------------*/
1301 /* changePointer - change pointer to functions */
1302 /*------------------------------------------------------------------*/
1304 changePointer (symbol * sym)
1308 /* go thru the chain of declarations */
1309 /* if we find a pointer to a function */
1310 /* unconditionally change it to a ptr */
1312 for (p = sym->type; p; p = p->next)
1314 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1315 DCL_TYPE (p) = port->unqualified_pointer;
1316 if (IS_PTR (p) && IS_FUNC (p->next))
1317 DCL_TYPE (p) = CPOINTER;
1321 /*------------------------------------------------------------------*/
1322 /* checkDecl - does semantic validation of a declaration */
1323 /*------------------------------------------------------------------*/
1325 checkDecl (symbol * sym, int isProto)
1328 checkSClass (sym, isProto); /* check the storage class */
1329 changePointer (sym); /* change pointers if required */
1331 /* if this is an array without any dimension
1332 then update the dimension from the initial value */
1333 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1334 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1339 /*------------------------------------------------------------------*/
1340 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1341 /*------------------------------------------------------------------*/
1343 copyLinkChain (sym_link * p)
1345 sym_link *head, *curr, *loop;
1348 head = loop = (curr ? newLink () : (void *) NULL);
1351 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1352 loop->next = (curr->next ? newLink () : (void *) NULL);
1361 /*------------------------------------------------------------------*/
1362 /* cleanUpBlock - cleansup the symbol table specified for all the */
1363 /* symbols in the given block */
1364 /*------------------------------------------------------------------*/
1366 cleanUpBlock (bucket ** table, int block)
1371 /* go thru the entire table */
1372 for (i = 0; i < 256; i++)
1374 for (chain = table[i]; chain; chain = chain->next)
1376 if (chain->block >= block)
1378 deleteSym (table, chain->sym, chain->name);
1384 /*------------------------------------------------------------------*/
1385 /* cleanUpLevel - cleansup the symbol table specified for all the */
1386 /* symbols in the given level */
1387 /*------------------------------------------------------------------*/
1389 cleanUpLevel (bucket ** table, int level)
1394 /* go thru the entire table */
1395 for (i = 0; i < 256; i++)
1397 for (chain = table[i]; chain; chain = chain->next)
1399 if (chain->level >= level)
1401 deleteSym (table, chain->sym, chain->name);
1407 /*------------------------------------------------------------------*/
1408 /* computeType - computes the resultant type from two types */
1409 /*------------------------------------------------------------------*/
1411 computeType (sym_link * type1, sym_link * type2)
1415 sym_link *etype1 = getSpec (type1);
1416 sym_link *etype2 = getSpec (type2);
1418 /* if one of them is a float then result is a float */
1419 /* here we assume that the types passed are okay */
1420 /* and can be cast to one another */
1421 /* which ever is greater in size */
1422 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1423 rType = newFloatLink ();
1425 /* if only one of them is a bit variable
1426 then the other one prevails */
1427 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1428 rType = copyLinkChain (type2);
1429 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1430 rType = copyLinkChain (type1);
1432 /* if one of them is a pointer or array then that
1434 if (IS_PTR (type1) || IS_ARRAY (type1))
1435 rType = copyLinkChain (type1);
1436 else if (IS_PTR (type2) || IS_ARRAY (type2))
1437 rType = copyLinkChain (type2);
1438 else if (getSize (type1) > getSize (type2))
1439 rType = copyLinkChain (type1);
1441 rType = copyLinkChain (type2);
1443 reType = getSpec (rType);
1445 /* if either of them unsigned but not val then make this unsigned */
1446 if (((!IS_LITERAL(type1) && SPEC_USIGN (etype1)) ||
1447 (!IS_LITERAL(type2) && SPEC_USIGN (etype2))) &&
1449 SPEC_USIGN (reType) = 1;
1451 SPEC_USIGN (reType) = 0;
1453 /* if result is a literal then make not so */
1454 if (IS_LITERAL (reType))
1455 SPEC_SCLS (reType) = S_REGISTER;
1460 /*--------------------------------------------------------------------*/
1461 /* compareType - will do type check return 1 if match, -1 if castable */
1462 /*--------------------------------------------------------------------*/
1464 compareType (sym_link * dest, sym_link * src)
1475 /* if dest is a declarator then */
1480 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1482 //checkFunction(src,dest);
1484 return compareType (dest->next, src->next);
1486 if (IS_PTR (dest) && IS_GENPTR (src) && IS_VOID(src->next)) {
1489 if (IS_PTR (src) && IS_GENPTR (dest))
1491 if (IS_PTR (dest) && IS_ARRAY (src)) {
1492 value *val=aggregateToPointer (valFromType(src));
1493 int res=compareType (dest, val->type);
1494 Safe_free(val->type);
1498 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1499 return compareType (dest->next, src);
1502 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1508 /* if one is a specifier and the other is not */
1509 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1510 (IS_SPEC (dest) && !IS_SPEC (src)))
1513 /* if one of them is a void then ok */
1514 if (SPEC_NOUN (dest) == V_VOID &&
1515 SPEC_NOUN (src) != V_VOID)
1518 if (SPEC_NOUN (dest) != V_VOID &&
1519 SPEC_NOUN (src) == V_VOID)
1522 /* if they are both bitfields then if the lengths
1523 and starts don't match */
1524 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1525 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1526 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1529 /* it is a specifier */
1530 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1532 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1533 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1534 getSize (dest) == getSize (src))
1536 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1541 else if (IS_STRUCT (dest))
1543 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1548 if (SPEC_LONG (dest) != SPEC_LONG (src))
1551 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1557 /*------------------------------------------------------------------*/
1558 /* inCalleeSaveList - return 1 if found in callee save list */
1559 /*------------------------------------------------------------------*/
1561 inCalleeSaveList (char *s)
1565 if (options.all_callee_saves) return 1;
1566 for (i = 0; options.calleeSaves[i]; i++)
1567 if (strcmp (options.calleeSaves[i], s) == 0)
1573 /*-----------------------------------------------------------------*/
1574 /* aggregateToPointer: change an agggregate type function */
1575 /* argument to a pointer to that type. */
1576 /*-----------------------------------------------------------------*/
1578 aggregateToPointer (value * val)
1580 if (IS_AGGREGATE (val->type))
1582 /* if this is a structure */
1583 /* then we need to add a new link */
1584 if (IS_STRUCT (val->type))
1586 /* first lets add DECLARATOR type */
1587 sym_link *p = val->type;
1589 werror (W_STRUCT_AS_ARG, val->name);
1590 val->type = newLink ();
1591 val->type->next = p;
1594 /* change to a pointer depending on the */
1595 /* storage class specified */
1596 switch (SPEC_SCLS (val->etype))
1599 DCL_TYPE (val->type) = IPOINTER;
1602 DCL_TYPE (val->type) = PPOINTER;
1605 if (SPEC_OCLS(val->etype)) {
1606 DCL_TYPE(val->type)=PTR_TYPE(SPEC_OCLS(val->etype));
1609 // this happens for (external) function parameters
1610 DCL_TYPE (val->type) = port->unqualified_pointer;
1612 if (TARGET_IS_DS390) {
1613 /* The AUTO and REGISTER classes should probably
1614 * also become generic pointers, but I haven't yet
1615 * devised a test case for that.
1617 DCL_TYPE (val->type) = port->unqualified_pointer;
1620 if (options.model==MODEL_LARGE) {
1621 DCL_TYPE (val->type) = FPOINTER;
1630 DCL_TYPE (val->type) = POINTER;
1633 DCL_TYPE (val->type) = CPOINTER;
1636 DCL_TYPE (val->type) = FPOINTER;
1639 DCL_TYPE (val->type) = EEPPOINTER;
1642 DCL_TYPE (val->type) = port->unqualified_pointer;
1645 /* is there is a symbol associated then */
1646 /* change the type of the symbol as well */
1649 val->sym->type = copyLinkChain (val->type);
1650 val->sym->etype = getSpec (val->sym->type);
1655 /*------------------------------------------------------------------*/
1656 /* checkFunction - does all kinds of check on a function */
1657 /*------------------------------------------------------------------*/
1659 checkFunction (symbol * sym, symbol *csym)
1661 value *exargs, *acargs;
1665 if (getenv("DEBUG_SANITY")) {
1666 fprintf (stderr, "checkFunction: %s ", sym->name);
1669 /* make sure the type is complete and sane */
1670 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1672 /* if not type then some kind of error */
1676 /* if the function has no type then make it return int */
1677 if (!sym->type->next)
1678 sym->type->next = sym->etype = newIntLink ();
1680 /* function cannot return aggregate */
1681 if (IS_AGGREGATE (sym->type->next))
1683 werror (E_FUNC_AGGR, sym->name);
1687 /* function cannot return bit */
1688 if (IS_BITVAR (sym->type->next))
1690 werror (E_FUNC_BIT, sym->name);
1694 /* check if this function is defined as calleeSaves
1695 then mark it as such */
1696 FUNC_CALLEESAVES(sym->type) = inCalleeSaveList (sym->name);
1698 /* if interrupt service routine */
1699 /* then it cannot have arguments */
1700 if (IFFUNC_ARGS(sym->type) && FUNC_ISISR (sym->type))
1702 if (!IS_VOID(FUNC_ARGS(sym->type)->type)) {
1703 werror (E_INT_ARGS, sym->name);
1704 FUNC_ARGS(sym->type)=NULL;
1708 for (argCnt=1, acargs = FUNC_ARGS(sym->type);
1710 acargs=acargs->next, argCnt++) {
1712 // this can happen for reentrant functions
1713 werror(E_PARAM_NAME_OMITTED, sym->name, argCnt);
1714 // the show must go on: synthesize a name and symbol
1715 SNPRINTF (acargs->name, sizeof(acargs->name), "_%s_PARM_%d", sym->name, argCnt);
1716 acargs->sym = newSymbol (acargs->name, 1);
1717 SPEC_OCLS (acargs->etype) = istack;
1718 acargs->sym->type = copyLinkChain (acargs->type);
1719 acargs->sym->etype = getSpec (acargs->sym->type);
1720 acargs->sym->_isparm = 1;
1721 strncpyz (acargs->sym->rname, acargs->name, sizeof(acargs->sym->rname));
1722 } else if (strcmp(acargs->sym->name, acargs->sym->rname)==0) {
1724 werror(E_PARAM_NAME_OMITTED, sym->name, argCnt);
1728 if (!csym && !(csym = findSym (SymbolTab, sym, sym->name)))
1729 return 1; /* not defined nothing more to check */
1731 /* check if body already present */
1732 if (csym && IFFUNC_HASBODY(csym->type))
1734 werror (E_FUNC_BODY, sym->name);
1738 /* check the return value type */
1739 if (compareType (csym->type, sym->type) <= 0)
1741 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1742 printFromToType(csym->type, sym->type);
1746 if (FUNC_ISISR (csym->type) != FUNC_ISISR (sym->type))
1748 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1751 if (FUNC_REGBANK (csym->type) != FUNC_REGBANK (sym->type))
1753 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1756 if (IFFUNC_ISNAKED (csym->type) != IFFUNC_ISNAKED (sym->type))
1758 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1761 /* compare expected args with actual args */
1762 exargs = FUNC_ARGS(csym->type);
1763 acargs = FUNC_ARGS(sym->type);
1765 /* for all the expected args do */
1768 exargs = exargs->next, acargs = acargs->next, argCnt++)
1770 if (getenv("DEBUG_SANITY")) {
1771 fprintf (stderr, "checkFunction: %s ", exargs->name);
1773 /* make sure the type is complete and sane */
1774 checkTypeSanity(exargs->etype, exargs->name);
1776 /* If the actual argument is an array, any prototype
1777 * will have modified it to a pointer. Duplicate that
1780 if (IS_AGGREGATE (acargs->type))
1782 checkValue = copyValue (acargs);
1783 aggregateToPointer (checkValue);
1787 checkValue = acargs;
1790 if (compareType (exargs->type, checkValue->type) <= 0)
1792 werror (E_ARG_TYPE, argCnt);
1793 printFromToType(exargs->type, checkValue->type);
1798 /* if one them ended we have a problem */
1799 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1800 (!exargs && acargs && !IS_VOID (acargs->type)))
1801 werror (E_ARG_COUNT);
1803 /* replace with this defition */
1804 sym->cdef = csym->cdef;
1805 deleteSym (SymbolTab, csym, csym->name);
1806 deleteFromSeg(csym);
1807 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1808 if (IS_EXTERN (csym->etype) && !
1809 IS_EXTERN (sym->etype))
1811 addSet (&publics, sym);
1816 /*-----------------------------------------------------------------*/
1817 /* processFuncArgs - does some processing with function args */
1818 /*-----------------------------------------------------------------*/
1820 processFuncArgs (symbol * func)
1824 sym_link *funcType=func->type;
1826 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
1827 fprintf (stderr, "SDCCsymt.c:processFuncArgs(%s)\n", func->name);
1829 // if this is a pointer to a function
1830 if (IS_PTR(funcType)) {
1831 funcType=funcType->next;
1834 /* if this function has variable argument list */
1835 /* then make the function a reentrant one */
1836 if (IFFUNC_HASVARARGS(funcType) || (options.stackAuto && !func->cdef))
1837 FUNC_ISREENT(funcType)=1;
1839 /* check if this function is defined as calleeSaves
1840 then mark it as such */
1841 FUNC_CALLEESAVES(funcType) = inCalleeSaveList (func->name);
1843 /* loop thru all the arguments */
1844 val = FUNC_ARGS(funcType);
1846 /* if it is void then remove parameters */
1847 if (val && IS_VOID (val->type))
1849 FUNC_ARGS(funcType) = NULL;
1853 /* reset regparm for the port */
1854 (*port->reset_regparms) ();
1855 /* if any of the arguments is an aggregate */
1856 /* change it to pointer to the same type */
1860 /* mark it as a register parameter if
1861 the function does not have VA_ARG
1862 and as port dictates */
1863 if (!IFFUNC_HASVARARGS(funcType) &&
1864 (argreg = (*port->reg_parm) (val->type)))
1866 SPEC_REGPARM (val->etype) = 1;
1867 SPEC_ARGREG(val->etype) = argreg;
1868 } else if (IFFUNC_ISREENT(funcType)) {
1869 FUNC_HASSTACKPARM(funcType) = 1;
1872 if (IS_AGGREGATE (val->type))
1874 aggregateToPointer (val);
1881 /* if this is an internal generated function call */
1883 /* ignore --stack-auto for this one, we don't know how it is compiled */
1884 /* simply trust on --int-long-reent or --float-reent */
1885 if (IFFUNC_ISREENT(funcType)) {
1889 /* if this function is reentrant or */
1890 /* automatics r 2b stacked then nothing */
1891 if (IFFUNC_ISREENT (funcType) || options.stackAuto)
1895 val = FUNC_ARGS(funcType);
1900 /* if a symbolname is not given */
1901 /* synthesize a variable name */
1904 SNPRINTF (val->name, sizeof(val->name),
1905 "_%s_PARM_%d", func->name, pNum++);
1906 val->sym = newSymbol (val->name, 1);
1907 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1908 val->sym->type = copyLinkChain (val->type);
1909 val->sym->etype = getSpec (val->sym->type);
1910 val->sym->_isparm = 1;
1911 strncpyz (val->sym->rname, val->name, sizeof(val->sym->rname));
1912 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1913 SPEC_STAT (func->etype);
1914 addSymChain (val->sym);
1917 else /* symbol name given create synth name */
1920 SNPRINTF (val->name, sizeof(val->name), "_%s_PARM_%d", func->name, pNum++);
1921 strncpyz (val->sym->rname, val->name, sizeof(val->sym->rname));
1922 val->sym->_isparm = 1;
1923 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1924 (options.model != MODEL_SMALL ? xdata : data);
1925 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1926 SPEC_STAT (func->etype);
1928 if (!isinSet(operKeyReset, val->sym)) {
1929 addSet (&operKeyReset, val->sym);
1930 applyToSet (operKeyReset, resetParmKey);
1936 /*-----------------------------------------------------------------*/
1937 /* isSymbolEqual - compares two symbols return 1 if they match */
1938 /*-----------------------------------------------------------------*/
1940 isSymbolEqual (symbol * dest, symbol * src)
1942 /* if pointers match then equal */
1946 /* if one of them is null then don't match */
1950 /* if both of them have rname match on rname */
1951 if (dest->rname[0] && src->rname[0])
1952 return (!strcmp (dest->rname, src->rname));
1954 /* otherwise match on name */
1955 return (!strcmp (dest->name, src->name));
1958 void PT(sym_link *type)
1960 printTypeChain(type,0);
1962 /*-----------------------------------------------------------------*/
1963 /* printTypeChain - prints the type chain in human readable form */
1964 /*-----------------------------------------------------------------*/
1966 printTypeChain (sym_link * start, FILE * of)
1969 sym_link * type, * search;
1978 fprintf (of, "void");
1982 /* print the chain as it is written in the source: */
1983 /* start with the last entry */
1984 for (type = start; type && type->next; type = type->next)
1990 if (DCL_PTR_VOLATILE (type)) {
1991 fprintf (of, "volatile ");
1993 switch (DCL_TYPE (type))
1996 fprintf (of, "function %s %s",
1997 (IFFUNC_ISBUILTIN(type) ? "__builtin__" : " "),
1998 (IFFUNC_ISJAVANATIVE(type) ? "_JavaNative" : " "));
2001 if (DCL_PTR_CONST (type))
2002 fprintf (of, "const ");
2003 fprintf (of, "generic * ");
2006 if (DCL_PTR_CONST (type))
2007 fprintf (of, "const ");
2008 fprintf (of, "code * ");
2011 if (DCL_PTR_CONST (type))
2012 fprintf (of, "const ");
2013 fprintf (of, "xdata * ");
2016 if (DCL_PTR_CONST (type))
2017 fprintf (of, "const ");
2018 fprintf (of, "eeprom * ");
2022 if (DCL_PTR_CONST (type))
2023 fprintf (of, "const ");
2024 fprintf (of, "near *");
2027 if (DCL_PTR_CONST (type))
2028 fprintf (of, "const ");
2029 fprintf (of, "idata * ");
2032 if (DCL_PTR_CONST (type))
2033 fprintf (of, "const ");
2034 fprintf (of, "pdata * ");
2037 if (DCL_PTR_CONST (type))
2038 fprintf (of, "const ");
2039 fprintf (of, "unkown * ");
2042 if (DCL_ELEM(type)) {
2043 fprintf (of, "[%d] ", DCL_ELEM(type));
2045 fprintf (of, "[] ");
2052 switch (SPEC_SCLS(type))
2054 case S_DATA: fprintf (of, "data "); break;
2055 case S_XDATA: fprintf (of, "xdata "); break;
2056 case S_SFR: fprintf (of, "sfr "); break;
2057 case S_SBIT: fprintf (of, "sbit "); break;
2058 case S_CODE: fprintf (of, "code "); break;
2059 case S_IDATA: fprintf (of, "idata "); break;
2060 case S_PDATA: fprintf (of, "pdata "); break;
2061 case S_LITERAL: fprintf (of, "literal "); break;
2062 case S_STACK: fprintf (of, "stack "); break;
2063 case S_XSTACK: fprintf (of, "xstack "); break;
2064 case S_BIT: fprintf (of, "bit "); break;
2065 case S_EEPROM: fprintf (of, "eeprom "); break;
2069 if (SPEC_VOLATILE (type))
2070 fprintf (of, "volatile ");
2071 if (SPEC_USIGN (type))
2072 fprintf (of, "unsigned ");
2073 if (SPEC_CONST (type))
2074 fprintf (of, "const ");
2075 switch (SPEC_NOUN (type))
2079 fprintf (of, "long ");
2080 fprintf (of, "int");
2084 fprintf (of, "char");
2088 fprintf (of, "void");
2092 fprintf (of, "float");
2096 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2100 fprintf (of, "sbit");
2104 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2108 fprintf (of, "double");
2112 fprintf (of, "unknown type");
2116 /* search entry in list before "type" */
2117 for (search = start; search && search->next != type;)
2118 search = search->next;
2127 /*-----------------------------------------------------------------*/
2128 /* cdbTypeInfo - print the type information for debugger */
2129 /*-----------------------------------------------------------------*/
2131 cdbTypeInfo (sym_link * type, FILE * of)
2133 fprintf (of, "{%d}", getSize (type));
2138 switch (DCL_TYPE (type))
2141 fprintf (of, "DF,");
2144 fprintf (of, "DG,");
2147 fprintf (of, "DC,");
2150 fprintf (of, "DX,");
2153 fprintf (of, "DD,");
2156 fprintf (of, "DI,");
2159 fprintf (of, "DP,");
2162 fprintf (of, "DA,");
2165 fprintf (of, "DA%d,", DCL_ELEM (type));
2173 switch (SPEC_NOUN (type))
2195 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2203 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2210 if (SPEC_USIGN (type))
2218 /*-----------------------------------------------------------------*/
2219 /* cdbSymbol - prints a symbol & its type information for debugger */
2220 /*-----------------------------------------------------------------*/
2222 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2234 fprintf (of, "S:"); /* symbol record */
2235 /* if this is not a structure symbol then
2236 we need to figure out the scope information */
2242 if (IS_STATIC (sym->etype))
2243 fprintf (of, "F%s$", moduleName); /* scope is file */
2245 fprintf (of, "G$"); /* scope is global */
2248 /* symbol is local */
2249 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2252 fprintf (of, "S$"); /* scope is structure */
2254 /* print the name, & mangled name */
2255 fprintf (of, "%s$%d$%d(", sym->name,
2256 sym->level, sym->block);
2258 cdbTypeInfo (sym->type, of);
2261 /* print the address space */
2262 map = SPEC_OCLS (sym->etype);
2263 fprintf (of, "%c,%d,%d",
2264 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2266 /* if assigned to registers then output register names */
2267 /* if this is a function then print
2268 if is it an interrupt routine & interrupt number
2269 and the register bank it is using */
2271 fprintf (of, ",%d,%d,%d", FUNC_ISISR (sym->type),
2272 FUNC_INTNO (sym->type), FUNC_REGBANK (sym->type));
2273 /* alternate location to find this symbol @ : eg registers
2280 /*-----------------------------------------------------------------*/
2281 /* cdbStruct - print a structure for debugger */
2282 /*-----------------------------------------------------------------*/
2284 cdbStruct (structdef * sdef, int block, FILE * of,
2285 int inStruct, char *tag)
2290 /* if block # then must have function scope */
2291 fprintf (of, "F%s$", moduleName);
2292 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2293 for (sym = sdef->fields; sym; sym = sym->next)
2295 fprintf (of, "({%d}", sym->offset);
2296 cdbSymbol (sym, of, TRUE, FALSE);
2304 /*------------------------------------------------------------------*/
2305 /* cdbStructBlock - calls struct printing for a blcks */
2306 /*------------------------------------------------------------------*/
2308 cdbStructBlock (int block, FILE * of)
2311 bucket **table = StructTab;
2315 /* go thru the entire table */
2316 for (i = 0; i < 256; i++)
2318 for (chain = table[i]; chain; chain = chain->next)
2320 if (chain->block >= block)
2322 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2328 /*-----------------------------------------------------------------*/
2329 /* powof2 - returns power of two for the number if number is pow 2 */
2330 /*-----------------------------------------------------------------*/
2332 powof2 (unsigned long num)
2345 if (n1s > 1 || nshifts == 0)
2361 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2362 symbol *__muldiv[3][3][2];
2363 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2364 sym_link *__multypes[3][2];
2365 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2366 symbol *__conv[2][3][2];
2367 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2368 symbol *__rlrr[2][3][2];
2370 sym_link *floatType;
2373 _mangleFunctionName(char *in)
2375 if (port->getMangledFunctionName)
2377 return port->getMangledFunctionName(in);
2385 /*-----------------------------------------------------------------*/
2386 /* typeFromStr - create a typechain from an encoded string */
2387 /* basic types - 'c' - char */
2393 /* '*' - pointer - default (GPOINTER) */
2394 /* modifiers - 'u' - unsigned */
2395 /* pointer modifiers - 'g' - generic */
2399 /* 'F' - function */
2400 /* examples : "ig*" - generic int * */
2401 /* "cx*" - char xdata * */
2402 /* "ui" - unsigned int */
2403 /*-----------------------------------------------------------------*/
2404 sym_link *typeFromStr (char *s)
2406 sym_link *r = newLink();
2418 r->class = SPECIFIER;
2419 SPEC_NOUN(r) = V_CHAR;
2423 r->class = SPECIFIER;
2424 SPEC_NOUN(r) = V_INT;
2427 r->class = SPECIFIER;
2428 SPEC_NOUN(r) = V_INT;
2432 r->class = SPECIFIER;
2433 SPEC_NOUN(r) = V_FLOAT;
2436 r->class = SPECIFIER;
2437 SPEC_NOUN(r) = V_VOID;
2440 DCL_TYPE(r) = port->unqualified_pointer;
2447 assert(*(s+1)=='*');
2451 r->class = DECLARATOR ;
2454 DCL_TYPE(r) = GPOINTER;
2457 DCL_TYPE(r) = FPOINTER;
2460 DCL_TYPE(r) = CPOINTER;
2463 DCL_TYPE(r) = POINTER;
2466 DCL_TYPE(r) = FUNCTION;
2470 r->class = DECLARATOR ;
2471 DCL_TYPE(r) = CPOINTER;
2477 werror(E_INTERNAL_ERROR, __FILE__, __LINE__,
2478 "typeFromStr: unknown type");
2481 if (IS_SPEC(r) && usign) {
2490 /*-----------------------------------------------------------------*/
2491 /* initCSupport - create functions for C support routines */
2492 /*-----------------------------------------------------------------*/
2496 const char *smuldivmod[] =
2500 const char *sbwd[] =
2502 "char", "int", "long"
2508 const char *srlrr[] =
2513 int bwd, su, muldivmod, tofrom, rlrr;
2515 if (getenv("SDCC_NO_C_SUPPORT")) {
2516 /* for debugging only */
2520 floatType = newFloatLink ();
2522 for (bwd = 0; bwd < 3; bwd++)
2539 __multypes[bwd][0] = l;
2540 __multypes[bwd][1] = copyLinkChain (l);
2541 SPEC_USIGN (__multypes[bwd][1]) = 1;
2544 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2545 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2546 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2547 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2548 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2549 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2550 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2551 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2552 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2553 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2555 for (tofrom = 0; tofrom < 2; tofrom++)
2557 for (bwd = 0; bwd < 3; bwd++)
2559 for (su = 0; su < 2; su++)
2563 SNPRINTF (buffer, sizeof(buffer), "__fs2%s%s", ssu[su], sbwd[bwd]);
2564 __conv[tofrom][bwd][su] = funcOfType (buffer, __multypes[bwd][su], floatType, 1, options.float_rent);
2568 SNPRINTF (buffer, sizeof(buffer), "__%s%s2fs", ssu[su], sbwd[bwd]);
2569 __conv[tofrom][bwd][su] = funcOfType (buffer, floatType, __multypes[bwd][su], 1, options.float_rent);
2575 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2577 for (bwd = 0; bwd < 3; bwd++)
2579 for (su = 0; su < 2; su++)
2581 SNPRINTF (buffer, sizeof(buffer),
2583 smuldivmod[muldivmod],
2586 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2587 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2592 for (rlrr = 0; rlrr < 2; rlrr++)
2594 for (bwd = 0; bwd < 3; bwd++)
2596 for (su = 0; su < 2; su++)
2598 SNPRINTF (buffer, sizeof(buffer),
2603 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2604 FUNC_NONBANKED (__rlrr[rlrr][bwd][su]->type) = 1;
2610 /*-----------------------------------------------------------------*/
2611 /* initBuiltIns - create prototypes for builtin functions */
2612 /*-----------------------------------------------------------------*/
2618 if (!port->builtintable) return ;
2620 for (i = 0 ; port->builtintable[i].name ; i++) {
2621 sym = funcOfTypeVarg(port->builtintable[i].name,port->builtintable[i].rtype,
2622 port->builtintable[i].nParms,port->builtintable[i].parm_types);
2623 FUNC_ISBUILTIN(sym->type) = 1;
2624 FUNC_ISREENT(sym->type) = 0; /* can never be reentrant */