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 switch (SPEC_SCLS (type))
353 DCL_TYPE (ptr) = FPOINTER;
356 DCL_TYPE (ptr) = IPOINTER;
359 DCL_TYPE (ptr) = PPOINTER;
362 DCL_TYPE (ptr) = POINTER;
365 DCL_TYPE (ptr) = CPOINTER;
368 DCL_TYPE (ptr) = EEPPOINTER;
371 DCL_TYPE (ptr) = port->unqualified_pointer;
374 /* the storage class of type ends here */
377 SPEC_VOLATILE (type) = 0;
380 /* now change all the remaining unknown pointers
381 to generic pointers */
384 if (!IS_SPEC (ptr) && DCL_TYPE (ptr) == UPOINTER)
385 DCL_TYPE (ptr) = port->unqualified_pointer;
389 /* same for the type although it is highly unlikely that
390 type will have a pointer */
393 if (!IS_SPEC (type) && DCL_TYPE (type) == UPOINTER)
394 DCL_TYPE (type) = port->unqualified_pointer;
400 /*------------------------------------------------------------------*/
401 /* addDecl - adds a declarator @ the end of a chain */
402 /*------------------------------------------------------------------*/
404 addDecl (symbol * sym, int type, sym_link * p)
410 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
411 fprintf (stderr, "SDCCsymt.c:addDecl(%s,%d,%p)\n", sym->name, type, p);
413 /* if we are passed a link then set head & tail */
422 head = tail = newLink ();
423 DCL_TYPE (head) = type;
426 /* if this is the first entry */
434 if (IS_SPEC (sym->etype) && IS_SPEC (head) && head == tail)
436 sym->etype = mergeSpec (sym->etype, head, sym->name);
440 if (IS_SPEC (sym->etype) && !IS_SPEC (head) && head == tail)
443 while (t->next != sym->etype)
446 tail->next = sym->etype;
450 sym->etype->next = head;
456 /* if the type is an unknown pointer and has
457 a tspec then take the const & volatile
458 attribute from the tspec & make it those of this
463 DCL_TYPE (p) == UPOINTER &&
466 // only for declarators
467 wassert (IS_DECL(sym->type));
469 if (!IS_SPEC (sym->etype))
471 sym->etype = sym->etype->next = newLink ();
472 sym->etype->class = SPECIFIER;
475 DCL_PTR_CONST (sym->type) = SPEC_CONST (DCL_TSPEC (p));
476 DCL_PTR_VOLATILE (sym->type) = SPEC_VOLATILE (DCL_TSPEC (p));
477 DCL_TSPEC (p) = NULL;
480 // if there is a function in this type chain
481 if (p && funcInChain(sym->type)) {
482 processFuncArgs (sym);
488 /*------------------------------------------------------------------
489 checkTypeSanity: prevent the user from doing e.g.:
491 ------------------------------------------------------------------*/
492 void checkTypeSanity(sym_link *etype, char *name) {
496 if (getenv("DEBUG_SANITY")) {
497 fprintf (stderr, "sanity check skipped for %s (etype==0)\n", name);
502 if (!IS_SPEC(etype)) {
503 if (getenv("DEBUG_SANITY")) {
504 fprintf (stderr, "sanity check skipped for %s (!IS_SPEC)\n", name);
509 noun=nounName(etype);
511 if (getenv("DEBUG_SANITY")) {
512 fprintf (stderr, "checking sanity for %s %p\n", name, etype);
515 if ((SPEC_NOUN(etype)==V_CHAR ||
516 SPEC_NOUN(etype)==V_FLOAT ||
517 SPEC_NOUN(etype)==V_DOUBLE ||
518 SPEC_NOUN(etype)==V_VOID) &&
519 (etype->select.s._short || SPEC_LONG(etype))) {
520 // long or short for char float double or void
521 werror (E_LONG_OR_SHORT_INVALID, noun, name);
523 if ((SPEC_NOUN(etype)==V_FLOAT ||
524 SPEC_NOUN(etype)==V_DOUBLE ||
525 SPEC_NOUN(etype)==V_VOID) &&
526 (etype->select.s._signed || SPEC_USIGN(etype))) {
527 // signed or unsigned for float double or void
528 werror (E_SIGNED_OR_UNSIGNED_INVALID, noun, name);
531 // special case for "short"
532 if (etype->select.s._short) {
533 SPEC_NOUN(etype) = options.shortis8bits ? V_CHAR : V_INT;
534 etype->select.s._short = 0;
538 "const a;" or "data b;" or "signed s" or "long l"
540 if (!SPEC_NOUN(etype)) {
541 SPEC_NOUN(etype)=V_INT;
544 if (etype->select.s._signed && SPEC_USIGN(etype)) {
545 // signed AND unsigned
546 werror (E_SIGNED_AND_UNSIGNED_INVALID, noun, name);
548 if (etype->select.s._short && SPEC_LONG(etype)) {
550 werror (E_LONG_AND_SHORT_INVALID, noun, name);
555 /*------------------------------------------------------------------*/
556 /* mergeSpec - merges two specifiers and returns the new one */
557 /*------------------------------------------------------------------*/
559 mergeSpec (sym_link * dest, sym_link * src, char *name)
561 sym_link *symlink=dest;
563 if (!IS_SPEC(dest) || !IS_SPEC(src)) {
565 werror (E_INTERNAL_ERROR, __FILE__, __LINE__, "cannot merge declarator");
568 werror (E_SYNTAX_ERROR, yytext);
569 // the show must go on
574 if (SPEC_NOUN(src)) {
575 if (!SPEC_NOUN(dest)) {
576 SPEC_NOUN(dest)=SPEC_NOUN(src);
578 /* we shouldn't redeclare the type */
579 if (getenv("DEBUG_SANITY")) {
580 fprintf (stderr, "mergeSpec: ");
582 werror(E_TWO_OR_MORE_DATA_TYPES, name);
586 if (SPEC_SCLS(src)) {
587 /* if destination has no storage class */
588 if (!SPEC_SCLS (dest) || SPEC_SCLS(dest)==S_REGISTER) {
589 SPEC_SCLS (dest) = SPEC_SCLS (src);
591 if (getenv("DEBUG_SANITY")) {
592 fprintf (stderr, "mergeSpec: ");
594 werror(E_TWO_OR_MORE_STORAGE_CLASSES, name);
598 /* copy all the specifications */
600 // we really should do:
602 if (SPEC_what(src)) {
603 if (SPEC_what(dest)) {
604 werror(W_DUPLICATE_SPEC, "what");
606 SPEC_what(dst)|=SPEC_what(src);
609 // but there are more important thing right now
611 SPEC_LONG (dest) |= SPEC_LONG (src);
612 dest->select.s._short|=src->select.s._short;
613 SPEC_USIGN (dest) |= SPEC_USIGN (src);
614 dest->select.s._signed|=src->select.s._signed;
615 SPEC_STAT (dest) |= SPEC_STAT (src);
616 SPEC_EXTR (dest) |= SPEC_EXTR (src);
617 SPEC_CONST(dest) |= SPEC_CONST (src);
618 SPEC_ABSA (dest) |= SPEC_ABSA (src);
619 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
620 SPEC_ADDR (dest) |= SPEC_ADDR (src);
621 SPEC_OCLS (dest) = SPEC_OCLS (src);
622 SPEC_BLEN (dest) |= SPEC_BLEN (src);
623 SPEC_BSTR (dest) |= SPEC_BSTR (src);
624 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
625 SPEC_ENUM (dest) |= SPEC_ENUM (src);
626 if (SPEC_ARGREG(src) && !SPEC_ARGREG(dest))
627 SPEC_ARGREG(dest) = SPEC_ARGREG(src);
629 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
630 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
632 /* these are the only function attributes that will be set
633 in a specifier while parsing */
634 FUNC_NONBANKED(dest) |= FUNC_NONBANKED(src);
635 FUNC_BANKED(dest) |= FUNC_BANKED(src);
636 FUNC_ISCRITICAL(dest) |= FUNC_ISCRITICAL(src);
637 FUNC_ISREENT(dest) |= FUNC_ISREENT(src);
638 FUNC_ISNAKED(dest) |= FUNC_ISNAKED(src);
639 FUNC_ISISR(dest) |= FUNC_ISISR(src);
640 FUNC_ISJAVANATIVE(dest) |= FUNC_ISJAVANATIVE(src);
641 FUNC_ISBUILTIN(dest) |= FUNC_ISBUILTIN(src);
642 FUNC_ISOVERLAY(dest) |= FUNC_ISOVERLAY(src);
643 FUNC_INTNO(dest) |= FUNC_INTNO(src);
644 FUNC_REGBANK(dest) |= FUNC_REGBANK(src);
649 /*------------------------------------------------------------------*/
650 /* genSymName - generates and returns a name used for anonymous vars */
651 /*------------------------------------------------------------------*/
653 genSymName (int level)
655 static int gCount = 0;
656 static char gname[SDCC_NAME_MAX + 1];
658 SNPRINTF (gname, sizeof(gname), "__%04d%04d", level, gCount++);
662 /*------------------------------------------------------------------*/
663 /* getSpec - returns the specifier part from a declaration chain */
664 /*------------------------------------------------------------------*/
666 getSpec (sym_link * p)
671 while (p && !(IS_SPEC (p)))
677 /*------------------------------------------------------------------*/
678 /* newCharLink() - creates an char type */
679 /*------------------------------------------------------------------*/
686 p->class = SPECIFIER;
687 SPEC_NOUN (p) = V_CHAR;
692 /*------------------------------------------------------------------*/
693 /* newFloatLink - a new Float type */
694 /*------------------------------------------------------------------*/
701 p->class = SPECIFIER;
702 SPEC_NOUN (p) = V_FLOAT;
707 /*------------------------------------------------------------------*/
708 /* newLongLink() - new long type */
709 /*------------------------------------------------------------------*/
716 p->class = SPECIFIER;
717 SPEC_NOUN (p) = V_INT;
723 /*------------------------------------------------------------------*/
724 /* newIntLink() - creates an int type */
725 /*------------------------------------------------------------------*/
732 p->class = SPECIFIER;
733 SPEC_NOUN (p) = V_INT;
738 /*------------------------------------------------------------------*/
739 /* getSize - returns size of a type chain in bits */
740 /*------------------------------------------------------------------*/
742 getSize (sym_link * p)
744 /* if nothing return 0 */
748 { /* if this is the specifier then */
749 switch (SPEC_NOUN (p))
750 { /* depending on the specifier type */
752 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
760 return SPEC_STRUCT (p)->size;
766 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
772 /* this is a specifier */
773 switch (DCL_TYPE (p))
777 return DCL_ELEM (p) * getSize (p->next);
779 // werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
780 // "can not tell the size of an array[]");
800 /*------------------------------------------------------------------*/
801 /* bitsForType - returns # of bits required to store this type */
802 /*------------------------------------------------------------------*/
804 bitsForType (sym_link * p)
806 /* if nothing return 0 */
811 { /* if this is the specifier then */
813 switch (SPEC_NOUN (p))
814 { /* depending on the specifier type */
816 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
818 return FLOATSIZE * 8;
824 return SPEC_STRUCT (p)->size * 8;
830 return SPEC_BLEN (p);
836 /* this is a specifier */
837 switch (DCL_TYPE (p))
840 return DCL_ELEM (p) * getSize (p->next) * 8;
844 return (PTRSIZE * 8);
849 return (FPTRSIZE * 8);
851 return (GPTRSIZE * 8);
858 /*------------------------------------------------------------------*/
859 /* copySymbolChain - copies a symbol chain */
860 /*------------------------------------------------------------------*/
862 copySymbolChain (symbol * src)
869 dest = copySymbol (src);
870 dest->next = copySymbolChain (src->next);
874 /*------------------------------------------------------------------*/
875 /* copySymbol - makes a copy of a symbol */
876 /*------------------------------------------------------------------*/
878 copySymbol (symbol * src)
885 dest = newSymbol (src->name, src->level);
886 memcpy (dest, src, sizeof (symbol));
887 dest->level = src->level;
888 dest->block = src->block;
889 dest->ival = copyIlist (src->ival);
890 dest->type = copyLinkChain (src->type);
891 dest->etype = getSpec (dest->type);
893 dest->key = src->key;
894 dest->allocreq = src->allocreq;
898 /*------------------------------------------------------------------*/
899 /* reverseSyms - reverses the links for a symbol chain */
900 /*------------------------------------------------------------------*/
902 reverseSyms (symbol * sym)
904 symbol *prev, *curr, *next;
919 sym->next = (void *) NULL;
923 /*------------------------------------------------------------------*/
924 /* reverseLink - reverses the links for a type chain */
925 /*------------------------------------------------------------------*/
927 reverseLink (sym_link * type)
929 sym_link *prev, *curr, *next;
944 type->next = (void *) NULL;
948 /*------------------------------------------------------------------*/
949 /* addSymChain - adds a symbol chain to the symboltable */
950 /*------------------------------------------------------------------*/
952 addSymChain (symbol * symHead)
954 symbol *sym = symHead;
957 for (; sym != NULL; sym = sym->next)
960 checkTypeSanity(sym->etype, sym->name);
962 /* if already exists in the symbol table then check if
963 one of them is an extern definition if yes then
964 then check if the type match, if the types match then
965 delete the current entry and add the new entry */
966 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
967 csym->level == sym->level) {
969 /* one definition extern ? */
970 if (IS_EXTERN (csym->etype) || IS_EXTERN (sym->etype)) {
971 /* do types match ? */
972 if (compareType (csym->type, sym->type) != 1) {
974 werror (E_EXTERN_MISMATCH, csym->name);
979 if (compareType (csym->type, sym->type) != 1) {
980 werror (E_DUPLICATE, sym->name);
984 /* delete current entry */
985 deleteSym (SymbolTab, csym, csym->name);
990 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
995 /*------------------------------------------------------------------*/
996 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
997 /*------------------------------------------------------------------*/
999 funcInChain (sym_link * lnk)
1010 /*------------------------------------------------------------------*/
1011 /* structElemType - returns the type info of a sturct member */
1012 /*------------------------------------------------------------------*/
1014 structElemType (sym_link * stype, value * id)
1016 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
1017 sym_link *type, *etype;
1018 sym_link *petype = getSpec (stype);
1022 /* look for the id */
1025 if (strcmp (fields->rname, id->name) == 0)
1027 type = copyLinkChain (fields->type);
1028 etype = getSpec (type);
1029 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1030 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1033 fields = fields->next;
1037 werror (E_NOT_MEMBER, id->name);
1039 // the show must go on
1040 return newIntLink();
1043 /*------------------------------------------------------------------*/
1044 /* getStructElement - returns element of a tructure definition */
1045 /*------------------------------------------------------------------*/
1047 getStructElement (structdef * sdef, symbol * sym)
1051 for (field = sdef->fields; field; field = field->next)
1052 if (strcmp (field->name, sym->name) == 0)
1055 werror (E_NOT_MEMBER, sym->name);
1057 return sdef->fields;
1060 /*------------------------------------------------------------------*/
1061 /* compStructSize - computes the size of a structure */
1062 /*------------------------------------------------------------------*/
1064 compStructSize (int su, structdef * sdef)
1066 int sum = 0, usum = 0;
1070 /* for the identifiers */
1071 loop = sdef->fields;
1074 /* create the internal name for this variable */
1075 SNPRINTF (loop->rname, sizeof(loop->rname), "_%s", loop->name);
1076 loop->offset = (su == UNION ? sum = 0 : sum);
1077 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1079 /* if this is a bit field */
1082 /* change it to a unsigned bit */
1083 SPEC_NOUN (loop->etype) = V_BIT;
1084 SPEC_USIGN (loop->etype) = 1;
1085 /* check if this fit into the remaining */
1086 /* bits of this byte else align it to the */
1087 /* next byte boundary */
1088 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1089 SPEC_BSTR (loop->etype) = bitOffset;
1090 if ((bitOffset += (loop->bitVar % 8)) == 8)
1093 else /* does not fit */ {
1095 SPEC_BSTR (loop->etype) = bitOffset;
1096 sum += (loop->bitVar / 8);
1097 bitOffset += (loop->bitVar % 8);
1099 /* if this is the last field then pad */
1100 if (!loop->next && bitOffset && bitOffset != 8) {
1106 checkDecl (loop, 1);
1107 sum += getSize (loop->type);
1112 /* if this is not a bitfield but the */
1113 /* previous one was and did not take */
1114 /* the whole byte then pad the rest */
1115 if ((loop && !loop->bitVar) && bitOffset) {
1120 /* if union then size = sizeof larget field */
1122 usum = max (usum, sum);
1126 return (su == UNION ? usum : sum);
1129 /*------------------------------------------------------------------*/
1130 /* checkSClass - check the storage class specification */
1131 /*------------------------------------------------------------------*/
1133 checkSClass (symbol * sym, int isProto)
1135 if (getenv("DEBUG_SANITY")) {
1136 fprintf (stderr, "checkSClass: %s \n", sym->name);
1139 /* type is literal can happen foe enums change
1141 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1142 SPEC_SCLS (sym->etype) = S_AUTO;
1144 /* if sfr or sbit then must also be */
1145 /* volatile the initial value will be xlated */
1146 /* to an absolute address */
1147 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1148 SPEC_SCLS (sym->etype) == S_SFR)
1150 SPEC_VOLATILE (sym->etype) = 1;
1151 /* if initial value given */
1154 SPEC_ABSA (sym->etype) = 1;
1155 SPEC_ADDR (sym->etype) =
1156 (int) list2int (sym->ival);
1161 /* if absolute address given then it mark it as
1162 volatile -- except in the PIC port */
1164 #if !OPT_DISABLE_PIC
1165 /* The PIC port uses a different peep hole optimizer based on "pCode" */
1169 if (IS_ABSOLUTE (sym->etype))
1170 SPEC_VOLATILE (sym->etype) = 1;
1173 /* global variables declared const put into code */
1174 /* if no other storage class specified */
1175 if (sym->level == 0 &&
1176 SPEC_CONST (sym->etype) &&
1177 SPEC_SCLS(sym->etype) == S_FIXED &&
1178 !IS_FUNC(sym->type)) {
1179 SPEC_SCLS (sym->etype) = S_CODE;
1182 /* global variable in code space is a constant */
1183 if (sym->level == 0 &&
1184 SPEC_SCLS (sym->etype) == S_CODE &&
1186 SPEC_CONST (sym->etype) = 1;
1189 /* if bit variable then no storage class can be */
1190 /* specified since bit is already a storage */
1191 if (IS_BITVAR (sym->etype) &&
1192 (SPEC_SCLS (sym->etype) != S_FIXED &&
1193 SPEC_SCLS (sym->etype) != S_SBIT &&
1194 SPEC_SCLS (sym->etype) != S_BIT)
1197 werror (E_BITVAR_STORAGE, sym->name);
1198 SPEC_SCLS (sym->etype) = S_FIXED;
1201 /* extern variables cannot be initialized */
1202 if (IS_EXTERN (sym->etype) && sym->ival)
1204 werror (E_EXTERN_INIT, sym->name);
1208 /* if this is an atomatic symbol */
1209 if (sym->level && (options.stackAuto || reentrant)) {
1210 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1211 SPEC_SCLS (sym->etype) == S_FIXED ||
1212 SPEC_SCLS (sym->etype) == S_REGISTER ||
1213 SPEC_SCLS (sym->etype) == S_STACK ||
1214 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1215 SPEC_SCLS (sym->etype) = S_AUTO;
1217 /* storage class may only be specified for statics */
1218 if (!IS_STATIC(sym->etype)) {
1219 werror (E_AUTO_ASSUMED, sym->name);
1224 /* automatic symbols cannot be given */
1225 /* an absolute address ignore it */
1227 SPEC_ABSA (sym->etype) &&
1228 (options.stackAuto || reentrant))
1230 werror (E_AUTO_ABSA, sym->name);
1231 SPEC_ABSA (sym->etype) = 0;
1234 /* arrays & pointers cannot be defined for bits */
1235 /* SBITS or SFRs or BIT */
1236 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1237 (SPEC_NOUN (sym->etype) == V_BIT ||
1238 SPEC_NOUN (sym->etype) == V_SBIT ||
1239 SPEC_SCLS (sym->etype) == S_SFR))
1240 werror (E_BIT_ARRAY, sym->name);
1242 /* if this is a bit|sbit then set length & start */
1243 if (SPEC_NOUN (sym->etype) == V_BIT ||
1244 SPEC_NOUN (sym->etype) == V_SBIT)
1246 SPEC_BLEN (sym->etype) = 1;
1247 SPEC_BSTR (sym->etype) = 0;
1251 /* variables declared in CODE space must have */
1252 /* initializers if not an extern */
1253 if (SPEC_SCLS (sym->etype) == S_CODE &&
1254 sym->ival == NULL &&
1256 port->mem.code_ro &&
1257 !IS_EXTERN (sym->etype) &&
1258 !funcInChain (sym->type))
1259 werror (E_CODE_NO_INIT, sym->name);
1262 /* if parameter or local variable then change */
1263 /* the storage class to reflect where the var will go */
1264 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1265 !IS_STATIC(sym->etype))
1267 if (options.stackAuto || (currFunc && IFFUNC_ISREENT (currFunc->type)))
1269 SPEC_SCLS (sym->etype) = (options.useXstack ?
1270 S_XSTACK : S_STACK);
1274 /* hack-o-matic! I see no reason why the useXstack option should ever
1275 * control this allcoation, but the code was originally that way, and
1276 * changing it for non-390 ports breaks the compiler badly.
1278 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1279 SPEC_SCLS (sym->etype) = (useXdata ?
1285 /*------------------------------------------------------------------*/
1286 /* changePointer - change pointer to functions */
1287 /*------------------------------------------------------------------*/
1289 changePointer (symbol * sym)
1293 /* go thru the chain of declarations */
1294 /* if we find a pointer to a function */
1295 /* unconditionally change it to a ptr */
1297 for (p = sym->type; p; p = p->next)
1299 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1300 DCL_TYPE (p) = port->unqualified_pointer;
1301 if (IS_PTR (p) && IS_FUNC (p->next))
1302 DCL_TYPE (p) = CPOINTER;
1306 /*------------------------------------------------------------------*/
1307 /* checkDecl - does semantic validation of a declaration */
1308 /*------------------------------------------------------------------*/
1310 checkDecl (symbol * sym, int isProto)
1313 checkSClass (sym, isProto); /* check the storage class */
1314 changePointer (sym); /* change pointers if required */
1316 /* if this is an array without any dimension
1317 then update the dimension from the initial value */
1318 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1319 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1324 /*------------------------------------------------------------------*/
1325 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1326 /*------------------------------------------------------------------*/
1328 copyLinkChain (sym_link * p)
1330 sym_link *head, *curr, *loop;
1333 head = loop = (curr ? newLink () : (void *) NULL);
1336 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1337 loop->next = (curr->next ? newLink () : (void *) NULL);
1346 /*------------------------------------------------------------------*/
1347 /* cleanUpBlock - cleansup the symbol table specified for all the */
1348 /* symbols in the given block */
1349 /*------------------------------------------------------------------*/
1351 cleanUpBlock (bucket ** table, int block)
1356 /* go thru the entire table */
1357 for (i = 0; i < 256; i++)
1359 for (chain = table[i]; chain; chain = chain->next)
1361 if (chain->block >= block)
1363 deleteSym (table, chain->sym, chain->name);
1369 /*------------------------------------------------------------------*/
1370 /* cleanUpLevel - cleansup the symbol table specified for all the */
1371 /* symbols in the given level */
1372 /*------------------------------------------------------------------*/
1374 cleanUpLevel (bucket ** table, int level)
1379 /* go thru the entire table */
1380 for (i = 0; i < 256; i++)
1382 for (chain = table[i]; chain; chain = chain->next)
1384 if (chain->level >= level)
1386 deleteSym (table, chain->sym, chain->name);
1392 /*------------------------------------------------------------------*/
1393 /* computeType - computes the resultant type from two types */
1394 /*------------------------------------------------------------------*/
1396 computeType (sym_link * type1, sym_link * type2)
1400 sym_link *etype1 = getSpec (type1);
1401 sym_link *etype2 = getSpec (type2);
1403 /* if one of them is a float then result is a float */
1404 /* here we assume that the types passed are okay */
1405 /* and can be cast to one another */
1406 /* which ever is greater in size */
1407 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1408 rType = newFloatLink ();
1410 /* if only one of them is a bit variable
1411 then the other one prevails */
1412 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1413 rType = copyLinkChain (type2);
1414 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1415 rType = copyLinkChain (type1);
1417 /* if one of them is a pointer or array then that
1419 if (IS_PTR (type1) || IS_ARRAY (type1))
1420 rType = copyLinkChain (type1);
1421 else if (IS_PTR (type2) || IS_ARRAY (type2))
1422 rType = copyLinkChain (type2);
1423 else if (getSize (type1) > getSize (type2))
1424 rType = copyLinkChain (type1);
1426 rType = copyLinkChain (type2);
1428 reType = getSpec (rType);
1430 /* if either of them unsigned but not val then make this unsigned */
1431 if (((!IS_LITERAL(type1) && SPEC_USIGN (etype1)) ||
1432 (!IS_LITERAL(type2) && SPEC_USIGN (etype2))) &&
1434 SPEC_USIGN (reType) = 1;
1436 SPEC_USIGN (reType) = 0;
1438 /* if result is a literal then make not so */
1439 if (IS_LITERAL (reType))
1440 SPEC_SCLS (reType) = S_REGISTER;
1445 /*--------------------------------------------------------------------*/
1446 /* compareType - will do type check return 1 if match, -1 if castable */
1447 /*--------------------------------------------------------------------*/
1449 compareType (sym_link * dest, sym_link * src)
1460 /* if dest is a declarator then */
1465 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1467 //checkFunction(src,dest);
1469 return compareType (dest->next, src->next);
1471 if (IS_PTR (dest) && IS_GENPTR (src) && IS_VOID(src->next)) {
1474 if (IS_PTR (src) && IS_GENPTR (dest))
1476 if (IS_PTR (dest) && IS_ARRAY (src)) {
1477 value *val=aggregateToPointer (valFromType(src));
1478 int res=compareType (dest, val->type);
1479 Safe_free(val->type);
1483 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1484 return compareType (dest->next, src);
1487 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1493 /* if one is a specifier and the other is not */
1494 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1495 (IS_SPEC (dest) && !IS_SPEC (src)))
1498 /* if one of them is a void then ok */
1499 if (SPEC_NOUN (dest) == V_VOID &&
1500 SPEC_NOUN (src) != V_VOID)
1503 if (SPEC_NOUN (dest) != V_VOID &&
1504 SPEC_NOUN (src) == V_VOID)
1507 /* if they are both bitfields then if the lengths
1508 and starts don't match */
1509 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1510 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1511 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1514 /* it is a specifier */
1515 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1517 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1518 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1519 getSize (dest) == getSize (src))
1521 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1526 else if (IS_STRUCT (dest))
1528 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1533 if (SPEC_LONG (dest) != SPEC_LONG (src))
1536 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1542 /*------------------------------------------------------------------*/
1543 /* inCalleeSaveList - return 1 if found in callee save list */
1544 /*------------------------------------------------------------------*/
1546 inCalleeSaveList (char *s)
1550 if (options.all_callee_saves) return 1;
1551 for (i = 0; options.calleeSaves[i]; i++)
1552 if (strcmp (options.calleeSaves[i], s) == 0)
1558 /*-----------------------------------------------------------------*/
1559 /* aggregateToPointer: change an agggregate type function */
1560 /* argument to a pointer to that type. */
1561 /*-----------------------------------------------------------------*/
1563 aggregateToPointer (value * val)
1565 if (IS_AGGREGATE (val->type))
1567 /* if this is a structure */
1568 /* then we need to add a new link */
1569 if (IS_STRUCT (val->type))
1571 /* first lets add DECLARATOR type */
1572 sym_link *p = val->type;
1574 werror (W_STRUCT_AS_ARG, val->name);
1575 val->type = newLink ();
1576 val->type->next = p;
1579 /* change to a pointer depending on the */
1580 /* storage class specified */
1581 switch (SPEC_SCLS (val->etype))
1584 DCL_TYPE (val->type) = IPOINTER;
1587 DCL_TYPE (val->type) = PPOINTER;
1590 if (SPEC_OCLS(val->etype)) {
1591 DCL_TYPE(val->type)=PTR_TYPE(SPEC_OCLS(val->etype));
1593 // this happens for (external) function parameters
1594 DCL_TYPE (val->type) = port->unqualified_pointer;
1600 DCL_TYPE (val->type) = POINTER;
1603 DCL_TYPE (val->type) = CPOINTER;
1606 DCL_TYPE (val->type) = FPOINTER;
1609 DCL_TYPE (val->type) = EEPPOINTER;
1612 DCL_TYPE (val->type) = port->unqualified_pointer;
1615 /* is there is a symbol associated then */
1616 /* change the type of the symbol as well */
1619 val->sym->type = copyLinkChain (val->type);
1620 val->sym->etype = getSpec (val->sym->type);
1625 /*------------------------------------------------------------------*/
1626 /* checkFunction - does all kinds of check on a function */
1627 /*------------------------------------------------------------------*/
1629 checkFunction (symbol * sym, symbol *csym)
1631 value *exargs, *acargs;
1635 if (getenv("DEBUG_SANITY")) {
1636 fprintf (stderr, "checkFunction: %s ", sym->name);
1639 /* make sure the type is complete and sane */
1640 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1642 /* if not type then some kind of error */
1646 /* if the function has no type then make it return int */
1647 if (!sym->type->next)
1648 sym->type->next = sym->etype = newIntLink ();
1650 /* function cannot return aggregate */
1651 if (IS_AGGREGATE (sym->type->next))
1653 werror (E_FUNC_AGGR, sym->name);
1657 /* function cannot return bit */
1658 if (IS_BITVAR (sym->type->next))
1660 werror (E_FUNC_BIT, sym->name);
1664 /* check if this function is defined as calleeSaves
1665 then mark it as such */
1666 FUNC_CALLEESAVES(sym->type) = inCalleeSaveList (sym->name);
1668 /* if interrupt service routine */
1669 /* then it cannot have arguments */
1670 if (IFFUNC_ARGS(sym->type) && FUNC_ISISR (sym->type))
1672 if (!IS_VOID(FUNC_ARGS(sym->type)->type)) {
1673 werror (E_INT_ARGS, sym->name);
1674 FUNC_ARGS(sym->type)=NULL;
1678 for (argCnt=1, acargs = FUNC_ARGS(sym->type);
1680 acargs=acargs->next, argCnt++) {
1682 // this can happen for reentrant functions
1683 werror(E_PARAM_NAME_OMITTED, sym->name, argCnt);
1684 // the show must go on: synthesize a name and symbol
1685 SNPRINTF (acargs->name, sizeof(acargs->name), "_%s_PARM_%d", sym->name, argCnt);
1686 acargs->sym = newSymbol (acargs->name, 1);
1687 SPEC_OCLS (acargs->etype) = istack;
1688 acargs->sym->type = copyLinkChain (acargs->type);
1689 acargs->sym->etype = getSpec (acargs->sym->type);
1690 acargs->sym->_isparm = 1;
1691 strncpyz (acargs->sym->rname, acargs->name, sizeof(acargs->sym->rname));
1692 } else if (strcmp(acargs->sym->name, acargs->sym->rname)==0) {
1694 werror(E_PARAM_NAME_OMITTED, sym->name, argCnt);
1698 if (!csym && !(csym = findSym (SymbolTab, sym, sym->name)))
1699 return 1; /* not defined nothing more to check */
1701 /* check if body already present */
1702 if (csym && IFFUNC_HASBODY(csym->type))
1704 werror (E_FUNC_BODY, sym->name);
1708 /* check the return value type */
1709 if (compareType (csym->type, sym->type) <= 0)
1711 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1712 printFromToType(csym->type, sym->type);
1716 if (FUNC_ISISR (csym->type) != FUNC_ISISR (sym->type))
1718 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1721 if (FUNC_REGBANK (csym->type) != FUNC_REGBANK (sym->type))
1723 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1726 if (IFFUNC_ISNAKED (csym->type) != IFFUNC_ISNAKED (sym->type))
1728 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1731 /* compare expected args with actual args */
1732 exargs = FUNC_ARGS(csym->type);
1733 acargs = FUNC_ARGS(sym->type);
1735 /* for all the expected args do */
1738 exargs = exargs->next, acargs = acargs->next, argCnt++)
1740 if (getenv("DEBUG_SANITY")) {
1741 fprintf (stderr, "checkFunction: %s ", exargs->name);
1743 /* make sure the type is complete and sane */
1744 checkTypeSanity(exargs->etype, exargs->name);
1746 /* If the actual argument is an array, any prototype
1747 * will have modified it to a pointer. Duplicate that
1750 if (IS_AGGREGATE (acargs->type))
1752 checkValue = copyValue (acargs);
1753 aggregateToPointer (checkValue);
1757 checkValue = acargs;
1760 if (compareType (exargs->type, checkValue->type) <= 0)
1762 werror (E_ARG_TYPE, argCnt);
1763 printFromToType(exargs->type, checkValue->type);
1768 /* if one them ended we have a problem */
1769 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1770 (!exargs && acargs && !IS_VOID (acargs->type)))
1771 werror (E_ARG_COUNT);
1773 /* replace with this defition */
1774 sym->cdef = csym->cdef;
1775 deleteSym (SymbolTab, csym, csym->name);
1776 deleteFromSeg(csym);
1777 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1778 if (IS_EXTERN (csym->etype) && !
1779 IS_EXTERN (sym->etype))
1781 addSet (&publics, sym);
1786 /*-----------------------------------------------------------------*/
1787 /* processFuncArgs - does some processing with function args */
1788 /*-----------------------------------------------------------------*/
1790 processFuncArgs (symbol * func)
1794 sym_link *funcType=func->type;
1796 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
1797 fprintf (stderr, "SDCCsymt.c:processFuncArgs(%s)\n", func->name);
1799 // if this is a pointer to a function
1800 if (IS_PTR(funcType)) {
1801 funcType=funcType->next;
1804 /* if this function has variable argument list */
1805 /* then make the function a reentrant one */
1806 if (IFFUNC_HASVARARGS(funcType) || (options.stackAuto && !func->cdef))
1807 FUNC_ISREENT(funcType)=1;
1809 /* check if this function is defined as calleeSaves
1810 then mark it as such */
1811 FUNC_CALLEESAVES(funcType) = inCalleeSaveList (func->name);
1813 /* loop thru all the arguments */
1814 val = FUNC_ARGS(funcType);
1816 /* if it is void then remove parameters */
1817 if (val && IS_VOID (val->type))
1819 FUNC_ARGS(funcType) = NULL;
1823 /* reset regparm for the port */
1824 (*port->reset_regparms) ();
1825 /* if any of the arguments is an aggregate */
1826 /* change it to pointer to the same type */
1830 /* mark it as a register parameter if
1831 the function does not have VA_ARG
1832 and as port dictates */
1833 if (!IFFUNC_HASVARARGS(funcType) &&
1834 (argreg = (*port->reg_parm) (val->type)))
1836 SPEC_REGPARM (val->etype) = 1;
1837 SPEC_ARGREG(val->etype) = argreg;
1838 } else if (IFFUNC_ISREENT(funcType)) {
1839 FUNC_HASSTACKPARM(funcType) = 1;
1842 if (IS_AGGREGATE (val->type))
1844 aggregateToPointer (val);
1851 /* if this is an internal generated function call */
1853 /* ignore --stack-auto for this one, we don't know how it is compiled */
1854 /* simply trust on --int-long-reent or --float-reent */
1855 if (IFFUNC_ISREENT(funcType)) {
1859 /* if this function is reentrant or */
1860 /* automatics r 2b stacked then nothing */
1861 if (IFFUNC_ISREENT (funcType) || options.stackAuto)
1865 val = FUNC_ARGS(funcType);
1870 /* if a symbolname is not given */
1871 /* synthesize a variable name */
1874 SNPRINTF (val->name, sizeof(val->name),
1875 "_%s_PARM_%d", func->name, pNum++);
1876 val->sym = newSymbol (val->name, 1);
1877 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1878 val->sym->type = copyLinkChain (val->type);
1879 val->sym->etype = getSpec (val->sym->type);
1880 val->sym->_isparm = 1;
1881 strncpyz (val->sym->rname, val->name, sizeof(val->sym->rname));
1882 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1883 SPEC_STAT (func->etype);
1884 addSymChain (val->sym);
1887 else /* symbol name given create synth name */
1890 SNPRINTF (val->name, sizeof(val->name), "_%s_PARM_%d", func->name, pNum++);
1891 strncpyz (val->sym->rname, val->name, sizeof(val->sym->rname));
1892 val->sym->_isparm = 1;
1893 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1894 (options.model != MODEL_SMALL ? xdata : data);
1895 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1896 SPEC_STAT (func->etype);
1898 if (!isinSet(operKeyReset, val->sym)) {
1899 addSet (&operKeyReset, val->sym);
1900 applyToSet (operKeyReset, resetParmKey);
1906 /*-----------------------------------------------------------------*/
1907 /* isSymbolEqual - compares two symbols return 1 if they match */
1908 /*-----------------------------------------------------------------*/
1910 isSymbolEqual (symbol * dest, symbol * src)
1912 /* if pointers match then equal */
1916 /* if one of them is null then don't match */
1920 /* if both of them have rname match on rname */
1921 if (dest->rname[0] && src->rname[0])
1922 return (!strcmp (dest->rname, src->rname));
1924 /* otherwise match on name */
1925 return (!strcmp (dest->name, src->name));
1928 void PT(sym_link *type)
1930 printTypeChain(type,0);
1932 /*-----------------------------------------------------------------*/
1933 /* printTypeChain - prints the type chain in human readable form */
1934 /*-----------------------------------------------------------------*/
1936 printTypeChain (sym_link * start, FILE * of)
1939 sym_link * type, * search;
1948 fprintf (of, "void");
1952 /* print the chain as it is written in the source: */
1953 /* start with the last entry */
1954 for (type = start; type && type->next; type = type->next)
1960 if (DCL_PTR_VOLATILE (type)) {
1961 fprintf (of, "volatile ");
1963 switch (DCL_TYPE (type))
1966 fprintf (of, "function %s %s",
1967 (IFFUNC_ISBUILTIN(type) ? "__builtin__" : " "),
1968 (IFFUNC_ISJAVANATIVE(type) ? "_JavaNative" : " "));
1971 if (DCL_PTR_CONST (type))
1972 fprintf (of, "const ");
1973 fprintf (of, "generic * ");
1976 if (DCL_PTR_CONST (type))
1977 fprintf (of, "const ");
1978 fprintf (of, "code * ");
1981 if (DCL_PTR_CONST (type))
1982 fprintf (of, "const ");
1983 fprintf (of, "xdata * ");
1986 if (DCL_PTR_CONST (type))
1987 fprintf (of, "const ");
1988 fprintf (of, "eeprom * ");
1992 if (DCL_PTR_CONST (type))
1993 fprintf (of, "const ");
1994 fprintf (of, "near *");
1997 if (DCL_PTR_CONST (type))
1998 fprintf (of, "const ");
1999 fprintf (of, "idata * ");
2002 if (DCL_PTR_CONST (type))
2003 fprintf (of, "const ");
2004 fprintf (of, "pdata * ");
2007 if (DCL_PTR_CONST (type))
2008 fprintf (of, "const ");
2009 fprintf (of, "unkown * ");
2012 if (DCL_ELEM(type)) {
2013 fprintf (of, "[%d] ", DCL_ELEM(type));
2015 fprintf (of, "[] ");
2022 switch (SPEC_SCLS(type))
2024 case S_DATA: fprintf (of, "data "); break;
2025 case S_XDATA: fprintf (of, "xdata "); break;
2026 case S_SFR: fprintf (of, "sfr "); break;
2027 case S_SBIT: fprintf (of, "sbit "); break;
2028 case S_CODE: fprintf (of, "code "); break;
2029 case S_IDATA: fprintf (of, "idata "); break;
2030 case S_PDATA: fprintf (of, "pdata "); break;
2031 case S_LITERAL: fprintf (of, "literal "); break;
2032 case S_STACK: fprintf (of, "stack "); break;
2033 case S_XSTACK: fprintf (of, "xstack "); break;
2034 case S_BIT: fprintf (of, "bit "); break;
2035 case S_EEPROM: fprintf (of, "eeprom "); break;
2039 if (SPEC_VOLATILE (type))
2040 fprintf (of, "volatile ");
2041 if (SPEC_USIGN (type))
2042 fprintf (of, "unsigned ");
2043 if (SPEC_CONST (type))
2044 fprintf (of, "const ");
2045 switch (SPEC_NOUN (type))
2049 fprintf (of, "long ");
2050 fprintf (of, "int");
2054 fprintf (of, "char");
2058 fprintf (of, "void");
2062 fprintf (of, "float");
2066 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2070 fprintf (of, "sbit");
2074 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2078 fprintf (of, "double");
2082 fprintf (of, "unknown type");
2086 /* search entry in list before "type" */
2087 for (search = start; search && search->next != type;)
2088 search = search->next;
2097 /*-----------------------------------------------------------------*/
2098 /* cdbTypeInfo - print the type information for debugger */
2099 /*-----------------------------------------------------------------*/
2101 cdbTypeInfo (sym_link * type, FILE * of)
2103 fprintf (of, "{%d}", getSize (type));
2108 switch (DCL_TYPE (type))
2111 fprintf (of, "DF,");
2114 fprintf (of, "DG,");
2117 fprintf (of, "DC,");
2120 fprintf (of, "DX,");
2123 fprintf (of, "DD,");
2126 fprintf (of, "DI,");
2129 fprintf (of, "DP,");
2132 fprintf (of, "DA,");
2135 fprintf (of, "DA%d,", DCL_ELEM (type));
2143 switch (SPEC_NOUN (type))
2165 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2173 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2180 if (SPEC_USIGN (type))
2188 /*-----------------------------------------------------------------*/
2189 /* cdbSymbol - prints a symbol & its type information for debugger */
2190 /*-----------------------------------------------------------------*/
2192 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2204 fprintf (of, "S:"); /* symbol record */
2205 /* if this is not a structure symbol then
2206 we need to figure out the scope information */
2212 if (IS_STATIC (sym->etype))
2213 fprintf (of, "F%s$", moduleName); /* scope is file */
2215 fprintf (of, "G$"); /* scope is global */
2218 /* symbol is local */
2219 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2222 fprintf (of, "S$"); /* scope is structure */
2224 /* print the name, & mangled name */
2225 fprintf (of, "%s$%d$%d(", sym->name,
2226 sym->level, sym->block);
2228 cdbTypeInfo (sym->type, of);
2231 /* print the address space */
2232 map = SPEC_OCLS (sym->etype);
2233 fprintf (of, "%c,%d,%d",
2234 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2236 /* if assigned to registers then output register names */
2237 /* if this is a function then print
2238 if is it an interrupt routine & interrupt number
2239 and the register bank it is using */
2241 fprintf (of, ",%d,%d,%d", FUNC_ISISR (sym->type),
2242 FUNC_INTNO (sym->type), FUNC_REGBANK (sym->type));
2243 /* alternate location to find this symbol @ : eg registers
2250 /*-----------------------------------------------------------------*/
2251 /* cdbStruct - print a structure for debugger */
2252 /*-----------------------------------------------------------------*/
2254 cdbStruct (structdef * sdef, int block, FILE * of,
2255 int inStruct, char *tag)
2260 /* if block # then must have function scope */
2261 fprintf (of, "F%s$", moduleName);
2262 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2263 for (sym = sdef->fields; sym; sym = sym->next)
2265 fprintf (of, "({%d}", sym->offset);
2266 cdbSymbol (sym, of, TRUE, FALSE);
2274 /*------------------------------------------------------------------*/
2275 /* cdbStructBlock - calls struct printing for a blcks */
2276 /*------------------------------------------------------------------*/
2278 cdbStructBlock (int block, FILE * of)
2281 bucket **table = StructTab;
2285 /* go thru the entire table */
2286 for (i = 0; i < 256; i++)
2288 for (chain = table[i]; chain; chain = chain->next)
2290 if (chain->block >= block)
2292 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2298 /*-----------------------------------------------------------------*/
2299 /* powof2 - returns power of two for the number if number is pow 2 */
2300 /*-----------------------------------------------------------------*/
2302 powof2 (unsigned long num)
2315 if (n1s > 1 || nshifts == 0)
2331 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2332 symbol *__muldiv[3][3][2];
2333 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2334 sym_link *__multypes[3][2];
2335 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2336 symbol *__conv[2][3][2];
2337 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2338 symbol *__rlrr[2][3][2];
2340 sym_link *floatType;
2343 _mangleFunctionName(char *in)
2345 if (port->getMangledFunctionName)
2347 return port->getMangledFunctionName(in);
2355 /*-----------------------------------------------------------------*/
2356 /* typeFromStr - create a typechain from an encoded string */
2357 /* basic types - 'c' - char */
2363 /* '*' - pointer - default (GPOINTER) */
2364 /* modifiers - 'u' - unsigned */
2365 /* pointer modifiers - 'g' - generic */
2369 /* 'F' - function */
2370 /* examples : "ig*" - generic int * */
2371 /* "cx*" - char xdata * */
2372 /* "ui" - unsigned int */
2373 /*-----------------------------------------------------------------*/
2374 sym_link *typeFromStr (char *s)
2376 sym_link *r = newLink();
2388 r->class = SPECIFIER;
2389 SPEC_NOUN(r) = V_CHAR;
2393 r->class = SPECIFIER;
2394 SPEC_NOUN(r) = V_INT;
2397 r->class = SPECIFIER;
2398 SPEC_NOUN(r) = V_INT;
2402 r->class = SPECIFIER;
2403 SPEC_NOUN(r) = V_FLOAT;
2406 r->class = SPECIFIER;
2407 SPEC_NOUN(r) = V_VOID;
2410 DCL_TYPE(r) = port->unqualified_pointer;
2417 assert(*(s+1)=='*');
2421 r->class = DECLARATOR ;
2424 DCL_TYPE(r) = GPOINTER;
2427 DCL_TYPE(r) = FPOINTER;
2430 DCL_TYPE(r) = CPOINTER;
2433 DCL_TYPE(r) = POINTER;
2436 DCL_TYPE(r) = FUNCTION;
2440 r->class = DECLARATOR ;
2441 DCL_TYPE(r) = CPOINTER;
2447 werror(E_INTERNAL_ERROR, __FILE__, __LINE__,
2448 "typeFromStr: unknown type");
2451 if (IS_SPEC(r) && usign) {
2460 /*-----------------------------------------------------------------*/
2461 /* initCSupport - create functions for C support routines */
2462 /*-----------------------------------------------------------------*/
2466 const char *smuldivmod[] =
2470 const char *sbwd[] =
2472 "char", "int", "long"
2478 const char *srlrr[] =
2483 int bwd, su, muldivmod, tofrom, rlrr;
2485 if (getenv("SDCC_NO_C_SUPPORT")) {
2486 /* for debugging only */
2490 floatType = newFloatLink ();
2492 for (bwd = 0; bwd < 3; bwd++)
2509 __multypes[bwd][0] = l;
2510 __multypes[bwd][1] = copyLinkChain (l);
2511 SPEC_USIGN (__multypes[bwd][1]) = 1;
2514 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2515 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2516 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2517 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2518 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2519 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2520 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2521 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2522 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2523 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2525 for (tofrom = 0; tofrom < 2; tofrom++)
2527 for (bwd = 0; bwd < 3; bwd++)
2529 for (su = 0; su < 2; su++)
2533 SNPRINTF (buffer, sizeof(buffer), "__fs2%s%s", ssu[su], sbwd[bwd]);
2534 __conv[tofrom][bwd][su] = funcOfType (buffer, __multypes[bwd][su], floatType, 1, options.float_rent);
2538 SNPRINTF (buffer, sizeof(buffer), "__%s%s2fs", ssu[su], sbwd[bwd]);
2539 __conv[tofrom][bwd][su] = funcOfType (buffer, floatType, __multypes[bwd][su], 1, options.float_rent);
2545 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2547 for (bwd = 0; bwd < 3; bwd++)
2549 for (su = 0; su < 2; su++)
2551 SNPRINTF (buffer, sizeof(buffer),
2553 smuldivmod[muldivmod],
2556 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2557 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2562 for (rlrr = 0; rlrr < 2; rlrr++)
2564 for (bwd = 0; bwd < 3; bwd++)
2566 for (su = 0; su < 2; su++)
2568 SNPRINTF (buffer, sizeof(buffer),
2573 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2574 FUNC_NONBANKED (__rlrr[rlrr][bwd][su]->type) = 1;
2580 /*-----------------------------------------------------------------*/
2581 /* initBuiltIns - create prototypes for builtin functions */
2582 /*-----------------------------------------------------------------*/
2588 if (!port->builtintable) return ;
2590 for (i = 0 ; port->builtintable[i].name ; i++) {
2591 sym = funcOfTypeVarg(port->builtintable[i].name,port->builtintable[i].rtype,
2592 port->builtintable[i].nParms,port->builtintable[i].parm_types);
2593 FUNC_ISBUILTIN(sym->type) = 1;
2594 FUNC_ISREENT(sym->type) = 0; /* can never be reentrant */