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 strcpy (bp->name, sname); /* 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 strcpy (sym->name, 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 strcpy (s->tag, 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) = GPOINTER;
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) = GPOINTER;
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) = GPOINTER;
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 %x\n", name, (int)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);
626 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
627 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
629 /* these are the only function attributes that will be set
630 in a specifier while parsing */
631 FUNC_NONBANKED(dest) |= FUNC_NONBANKED(src);
632 FUNC_BANKED(dest) |= FUNC_BANKED(src);
633 FUNC_ISCRITICAL(dest) |= FUNC_ISCRITICAL(src);
634 FUNC_ISREENT(dest) |= FUNC_ISREENT(src);
635 FUNC_ISNAKED(dest) |= FUNC_ISNAKED(src);
636 FUNC_ISISR(dest) |= FUNC_ISISR(src);
637 FUNC_INTNO(dest) |= FUNC_INTNO(src);
638 FUNC_REGBANK(dest) |= FUNC_REGBANK(src);
643 /*------------------------------------------------------------------*/
644 /* cloneSpec - copies the entire spec and returns a new spec */
645 /*------------------------------------------------------------------*/
647 cloneSpec (sym_link * src)
651 /* go thru chain till we find the specifier */
652 while (src && src->class != SPECIFIER)
656 memcpy (spec, src, sizeof (sym_link));
660 /*------------------------------------------------------------------*/
661 /* genSymName - generates and returns a name used for anonymous vars */
662 /*------------------------------------------------------------------*/
664 genSymName (int level)
666 static int gCount = 0;
667 static char gname[SDCC_NAME_MAX + 1];
669 sprintf (gname, "__%04d%04d", level, gCount++);
673 /*------------------------------------------------------------------*/
674 /* getSpec - returns the specifier part from a declaration chain */
675 /*------------------------------------------------------------------*/
677 getSpec (sym_link * p)
682 while (p && !(IS_SPEC (p)))
688 /*------------------------------------------------------------------*/
689 /* newCharLink() - creates an char type */
690 /*------------------------------------------------------------------*/
697 p->class = SPECIFIER;
698 SPEC_NOUN (p) = V_CHAR;
703 /*------------------------------------------------------------------*/
704 /* newFloatLink - a new Float type */
705 /*------------------------------------------------------------------*/
712 p->class = SPECIFIER;
713 SPEC_NOUN (p) = V_FLOAT;
718 /*------------------------------------------------------------------*/
719 /* newLongLink() - new long type */
720 /*------------------------------------------------------------------*/
727 p->class = SPECIFIER;
728 SPEC_NOUN (p) = V_INT;
734 /*------------------------------------------------------------------*/
735 /* newIntLink() - creates an int type */
736 /*------------------------------------------------------------------*/
743 p->class = SPECIFIER;
744 SPEC_NOUN (p) = V_INT;
749 /*------------------------------------------------------------------*/
750 /* getSize - returns size of a type chain in bits */
751 /*------------------------------------------------------------------*/
753 getSize (sym_link * p)
755 /* if nothing return 0 */
759 { /* if this is the specifier then */
760 switch (SPEC_NOUN (p))
761 { /* depending on the specifier type */
763 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
771 return SPEC_STRUCT (p)->size;
777 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
783 /* this is a specifier */
784 switch (DCL_TYPE (p))
788 return DCL_ELEM (p) * getSize (p->next);
790 werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
791 "can not tell the size of an array[]");
811 /*------------------------------------------------------------------*/
812 /* bitsForType - returns # of bits required to store this type */
813 /*------------------------------------------------------------------*/
815 bitsForType (sym_link * p)
817 /* if nothing return 0 */
822 { /* if this is the specifier then */
824 switch (SPEC_NOUN (p))
825 { /* depending on the specifier type */
827 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
829 return FLOATSIZE * 8;
835 return SPEC_STRUCT (p)->size * 8;
841 return SPEC_BLEN (p);
847 /* this is a specifier */
848 switch (DCL_TYPE (p))
851 return DCL_ELEM (p) * getSize (p->next) * 8;
855 return (PTRSIZE * 8);
860 return (FPTRSIZE * 8);
862 return (GPTRSIZE * 8);
869 /*------------------------------------------------------------------*/
870 /* copySymbolChain - copies a symbol chain */
871 /*------------------------------------------------------------------*/
873 copySymbolChain (symbol * src)
880 dest = copySymbol (src);
881 dest->next = copySymbolChain (src->next);
885 /*------------------------------------------------------------------*/
886 /* copySymbol - makes a copy of a symbol */
887 /*------------------------------------------------------------------*/
889 copySymbol (symbol * src)
896 dest = newSymbol (src->name, src->level);
897 memcpy (dest, src, sizeof (symbol));
898 dest->level = src->level;
899 dest->block = src->block;
900 dest->ival = copyIlist (src->ival);
901 dest->type = copyLinkChain (src->type);
902 dest->etype = getSpec (dest->type);
904 dest->key = src->key;
905 dest->allocreq = src->allocreq;
909 /*------------------------------------------------------------------*/
910 /* reverseSyms - reverses the links for a symbol chain */
911 /*------------------------------------------------------------------*/
913 reverseSyms (symbol * sym)
915 symbol *prev, *curr, *next;
930 sym->next = (void *) NULL;
934 /*------------------------------------------------------------------*/
935 /* reverseLink - reverses the links for a type chain */
936 /*------------------------------------------------------------------*/
938 reverseLink (sym_link * type)
940 sym_link *prev, *curr, *next;
955 type->next = (void *) NULL;
959 /*------------------------------------------------------------------*/
960 /* addSymChain - adds a symbol chain to the symboltable */
961 /*------------------------------------------------------------------*/
963 addSymChain (symbol * symHead)
965 symbol *sym = symHead;
968 for (; sym != NULL; sym = sym->next)
971 checkTypeSanity(sym->etype, sym->name);
973 /* if already exists in the symbol table then check if
974 one of them is an extern definition if yes then
975 then check if the type match, if the types match then
976 delete the current entry and add the new entry */
977 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
978 csym->level == sym->level) {
980 /* one definition extern ? */
981 if (IS_EXTERN (csym->etype) || IS_EXTERN (sym->etype)) {
982 /* do types match ? */
983 if (compareType (csym->type, sym->type) != 1) {
985 werror (E_EXTERN_MISMATCH, csym->name);
988 /* delete current entry */
989 deleteSym (SymbolTab, csym, csym->name);
992 werror (E_DUPLICATE, sym->name);
998 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1003 /*------------------------------------------------------------------*/
1004 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
1005 /*------------------------------------------------------------------*/
1007 funcInChain (sym_link * lnk)
1018 /*------------------------------------------------------------------*/
1019 /* structElemType - returns the type info of a sturct member */
1020 /*------------------------------------------------------------------*/
1022 structElemType (sym_link * stype, value * id)
1024 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
1025 sym_link *type, *etype;
1026 sym_link *petype = getSpec (stype);
1031 /* look for the id */
1034 if (strcmp (fields->rname, id->name) == 0)
1036 type = copyLinkChain (fields->type);
1037 etype = getSpec (type);
1038 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1039 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1042 fields = fields->next;
1044 werror (E_NOT_MEMBER, id->name);
1049 /*------------------------------------------------------------------*/
1050 /* getStructElement - returns element of a tructure definition */
1051 /*------------------------------------------------------------------*/
1053 getStructElement (structdef * sdef, symbol * sym)
1057 for (field = sdef->fields; field; field = field->next)
1058 if (strcmp (field->name, sym->name) == 0)
1061 werror (E_NOT_MEMBER, sym->name);
1063 return sdef->fields;
1066 /*------------------------------------------------------------------*/
1067 /* compStructSize - computes the size of a structure */
1068 /*------------------------------------------------------------------*/
1070 compStructSize (int su, structdef * sdef)
1072 int sum = 0, usum = 0;
1076 /* for the identifiers */
1077 loop = sdef->fields;
1080 /* create the internal name for this variable */
1081 sprintf (loop->rname, "_%s", loop->name);
1082 loop->offset = (su == UNION ? sum = 0 : sum);
1083 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1085 /* if this is a bit field */
1088 /* change it to a unsigned bit */
1089 SPEC_NOUN (loop->etype) = V_BIT;
1090 SPEC_USIGN (loop->etype) = 1;
1091 /* check if this fit into the remaining */
1092 /* bits of this byte else align it to the */
1093 /* next byte boundary */
1094 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1095 SPEC_BSTR (loop->etype) = bitOffset;
1096 if ((bitOffset += (loop->bitVar % 8)) == 8)
1099 else /* does not fit */ {
1101 SPEC_BSTR (loop->etype) = bitOffset;
1102 sum += (loop->bitVar / 8);
1103 bitOffset += (loop->bitVar % 8);
1105 /* if this is the last field then pad */
1106 if (!loop->next && bitOffset && bitOffset != 8) {
1112 checkDecl (loop, 1);
1113 sum += getSize (loop->type);
1116 #if 0 // jwk: this is done now in addDecl()
1117 /* if function then do the arguments for it */
1118 if (funcInChain (loop->type)) {
1119 processFuncArgs (loop);
1125 /* if this is not a bitfield but the */
1126 /* previous one was and did not take */
1127 /* the whole byte then pad the rest */
1128 if ((loop && !loop->bitVar) && bitOffset) {
1133 /* if union then size = sizeof larget field */
1135 usum = max (usum, sum);
1139 return (su == UNION ? usum : sum);
1142 /*------------------------------------------------------------------*/
1143 /* checkSClass - check the storage class specification */
1144 /*------------------------------------------------------------------*/
1146 checkSClass (symbol * sym, int isProto)
1148 if (getenv("DEBUG_SANITY")) {
1149 fprintf (stderr, "checkSClass: %s \n", sym->name);
1152 /* type is literal can happen foe enums change
1154 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1155 SPEC_SCLS (sym->etype) = S_AUTO;
1157 /* if sfr or sbit then must also be */
1158 /* volatile the initial value will be xlated */
1159 /* to an absolute address */
1160 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1161 SPEC_SCLS (sym->etype) == S_SFR)
1163 SPEC_VOLATILE (sym->etype) = 1;
1164 /* if initial value given */
1167 SPEC_ABSA (sym->etype) = 1;
1168 SPEC_ADDR (sym->etype) =
1169 (int) list2int (sym->ival);
1174 /* if absolute address given then it mark it as
1176 if (IS_ABSOLUTE (sym->etype))
1177 SPEC_VOLATILE (sym->etype) = 1;
1179 /* global variables declared const put into code */
1180 if (sym->level == 0 &&
1181 SPEC_CONST (sym->etype)) {
1182 SPEC_SCLS (sym->etype) = S_CODE;
1185 /* global variable in code space is a constant */
1186 if (sym->level == 0 &&
1187 SPEC_SCLS (sym->etype) == S_CODE &&
1189 SPEC_CONST (sym->etype) = 1;
1192 /* if bit variable then no storage class can be */
1193 /* specified since bit is already a storage */
1194 if (IS_BITVAR (sym->etype) &&
1195 (SPEC_SCLS (sym->etype) != S_FIXED &&
1196 SPEC_SCLS (sym->etype) != S_SBIT &&
1197 SPEC_SCLS (sym->etype) != S_BIT)
1200 werror (E_BITVAR_STORAGE, sym->name);
1201 SPEC_SCLS (sym->etype) = S_FIXED;
1204 /* extern variables cannot be initialized */
1205 if (IS_EXTERN (sym->etype) && sym->ival)
1207 werror (E_EXTERN_INIT, sym->name);
1211 /* if this is an atomatic symbol */
1212 if (sym->level && (options.stackAuto || reentrant)) {
1213 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1214 SPEC_SCLS (sym->etype) == S_FIXED ||
1215 SPEC_SCLS (sym->etype) == S_REGISTER ||
1216 SPEC_SCLS (sym->etype) == S_STACK ||
1217 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1218 SPEC_SCLS (sym->etype) = S_AUTO;
1220 /* storage class may only be specified for statics */
1221 if (!IS_STATIC(sym->etype)) {
1222 werror (E_AUTO_ASSUMED, sym->name);
1227 /* automatic symbols cannot be given */
1228 /* an absolute address ignore it */
1230 SPEC_ABSA (sym->etype) &&
1231 (options.stackAuto || reentrant))
1233 werror (E_AUTO_ABSA, sym->name);
1234 SPEC_ABSA (sym->etype) = 0;
1237 /* arrays & pointers cannot be defined for bits */
1238 /* SBITS or SFRs or BIT */
1239 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1240 (SPEC_NOUN (sym->etype) == V_BIT ||
1241 SPEC_NOUN (sym->etype) == V_SBIT ||
1242 SPEC_SCLS (sym->etype) == S_SFR))
1243 werror (E_BIT_ARRAY, sym->name);
1245 /* if this is a bit|sbit then set length & start */
1246 if (SPEC_NOUN (sym->etype) == V_BIT ||
1247 SPEC_NOUN (sym->etype) == V_SBIT)
1249 SPEC_BLEN (sym->etype) = 1;
1250 SPEC_BSTR (sym->etype) = 0;
1254 /* variables declared in CODE space must have */
1255 /* initializers if not an extern */
1256 if (SPEC_SCLS (sym->etype) == S_CODE &&
1257 sym->ival == NULL &&
1259 port->mem.code_ro &&
1260 !IS_EXTERN (sym->etype) &&
1261 !funcInChain (sym->type))
1262 werror (E_CODE_NO_INIT, sym->name);
1265 /* if parameter or local variable then change */
1266 /* the storage class to reflect where the var will go */
1267 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1268 !IS_STATIC(sym->etype))
1270 if (options.stackAuto || (currFunc && IFFUNC_ISREENT (currFunc->type)))
1272 SPEC_SCLS (sym->etype) = (options.useXstack ?
1273 S_XSTACK : S_STACK);
1277 /* hack-o-matic! I see no reason why the useXstack option should ever
1278 * control this allcoation, but the code was originally that way, and
1279 * changing it for non-390 ports breaks the compiler badly.
1281 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1282 SPEC_SCLS (sym->etype) = (useXdata ?
1288 /*------------------------------------------------------------------*/
1289 /* changePointer - change pointer to functions */
1290 /*------------------------------------------------------------------*/
1292 changePointer (symbol * sym)
1296 /* go thru the chain of declarations */
1297 /* if we find a pointer to a function */
1298 /* unconditionally change it to a ptr */
1300 for (p = sym->type; p; p = p->next)
1302 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1303 DCL_TYPE (p) = GPOINTER;
1304 if (IS_PTR (p) && IS_FUNC (p->next))
1305 DCL_TYPE (p) = CPOINTER;
1309 /*------------------------------------------------------------------*/
1310 /* checkDecl - does semantic validation of a declaration */
1311 /*------------------------------------------------------------------*/
1313 checkDecl (symbol * sym, int isProto)
1316 checkSClass (sym, isProto); /* check the storage class */
1317 changePointer (sym); /* change pointers if required */
1319 /* if this is an array without any dimension
1320 then update the dimension from the initial value */
1321 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1322 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1327 /*------------------------------------------------------------------*/
1328 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1329 /*------------------------------------------------------------------*/
1331 copyLinkChain (sym_link * p)
1333 sym_link *head, *curr, *loop;
1336 head = loop = (curr ? newLink () : (void *) NULL);
1339 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1340 loop->next = (curr->next ? newLink () : (void *) NULL);
1349 /*------------------------------------------------------------------*/
1350 /* cleanUpBlock - cleansup the symbol table specified for all the */
1351 /* symbols in the given block */
1352 /*------------------------------------------------------------------*/
1354 cleanUpBlock (bucket ** table, int block)
1359 /* go thru the entire table */
1360 for (i = 0; i < 256; i++)
1362 for (chain = table[i]; chain; chain = chain->next)
1364 if (chain->block >= block)
1366 deleteSym (table, chain->sym, chain->name);
1372 /*------------------------------------------------------------------*/
1373 /* cleanUpLevel - cleansup the symbol table specified for all the */
1374 /* symbols in the given level */
1375 /*------------------------------------------------------------------*/
1377 cleanUpLevel (bucket ** table, int level)
1382 /* go thru the entire table */
1383 for (i = 0; i < 256; i++)
1385 for (chain = table[i]; chain; chain = chain->next)
1387 if (chain->level >= level)
1389 deleteSym (table, chain->sym, chain->name);
1395 /*------------------------------------------------------------------*/
1396 /* computeType - computes the resultant type from two types */
1397 /*------------------------------------------------------------------*/
1399 computeType (sym_link * type1, sym_link * type2)
1403 sym_link *etype1 = getSpec (type1);
1404 sym_link *etype2 = getSpec (type2);
1406 /* if one of them is a float then result is a float */
1407 /* here we assume that the types passed are okay */
1408 /* and can be cast to one another */
1409 /* which ever is greater in size */
1410 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1411 rType = newFloatLink ();
1413 /* if only one of them is a bit variable
1414 then the other one prevails */
1415 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1416 rType = copyLinkChain (type2);
1417 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1418 rType = copyLinkChain (type1);
1420 /* if one of them is a pointer or array then that
1422 if (IS_PTR (type1) || IS_ARRAY (type1))
1423 rType = copyLinkChain (type1);
1424 else if (IS_PTR (type2) || IS_ARRAY (type2))
1425 rType = copyLinkChain (type2);
1426 else if (getSize (type1) > getSize (type2))
1427 rType = copyLinkChain (type1);
1429 rType = copyLinkChain (type2);
1431 reType = getSpec (rType);
1433 /* if either of them unsigned but not val then make this unsigned */
1434 if (((!IS_LITERAL(type1) && SPEC_USIGN (etype1)) ||
1435 (!IS_LITERAL(type2) && SPEC_USIGN (etype2))) &&
1437 SPEC_USIGN (reType) = 1;
1439 SPEC_USIGN (reType) = 0;
1441 /* if result is a literal then make not so */
1442 if (IS_LITERAL (reType))
1443 SPEC_SCLS (reType) = S_REGISTER;
1448 /*--------------------------------------------------------------------*/
1449 /* compareType - will do type check return 1 if match, -1 if castable */
1450 /*--------------------------------------------------------------------*/
1452 compareType (sym_link * dest, sym_link * src)
1463 /* if dest is a declarator then */
1468 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1470 //checkFunction(src,dest);
1472 return compareType (dest->next, 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);
1481 //return res ? -1 : 0;
1484 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1485 return compareType (dest->next, src);
1488 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1494 /* if one is a specifier and the other is not */
1495 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1496 (IS_SPEC (dest) && !IS_SPEC (src)))
1499 /* if one of them is a void then ok */
1500 if (SPEC_NOUN (dest) == V_VOID &&
1501 SPEC_NOUN (src) != V_VOID)
1504 if (SPEC_NOUN (dest) != V_VOID &&
1505 SPEC_NOUN (src) == V_VOID)
1508 /* if they are both bitfields then if the lengths
1509 and starts don't match */
1510 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1511 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1512 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1515 /* it is a specifier */
1516 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1518 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1519 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1520 getSize (dest) == getSize (src))
1522 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1527 else if (IS_STRUCT (dest))
1529 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1534 if (SPEC_LONG (dest) != SPEC_LONG (src))
1537 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1543 /*------------------------------------------------------------------*/
1544 /* inCalleeSaveList - return 1 if found in callee save list */
1545 /*------------------------------------------------------------------*/
1547 inCalleeSaveList (char *s)
1551 if (options.all_callee_saves) return 1;
1552 for (i = 0; options.calleeSaves[i]; i++)
1553 if (strcmp (options.calleeSaves[i], s) == 0)
1559 /*-----------------------------------------------------------------*/
1560 /* aggregateToPointer: change an agggregate type function */
1561 /* argument to a pointer to that type. */
1562 /*-----------------------------------------------------------------*/
1564 aggregateToPointer (value * val)
1566 if (IS_AGGREGATE (val->type))
1568 /* if this is a structure */
1569 /* then we need to add a new link */
1570 if (IS_STRUCT (val->type))
1572 /* first lets add DECLARATOR type */
1573 sym_link *p = val->type;
1575 werror (W_STRUCT_AS_ARG, val->name);
1576 val->type = newLink ();
1577 val->type->next = p;
1580 /* change to a pointer depending on the */
1581 /* storage class specified */
1582 switch (SPEC_SCLS (val->etype))
1585 DCL_TYPE (val->type) = IPOINTER;
1588 DCL_TYPE (val->type) = PPOINTER;
1591 if (SPEC_OCLS(val->etype)) {
1592 DCL_TYPE(val->type)=PTR_TYPE(SPEC_OCLS(val->etype));
1595 // this happens for (external) function parameters
1596 DCL_TYPE (val->type) = GPOINTER;
1598 if (TARGET_IS_DS390) {
1599 /* The AUTO and REGISTER classes should probably
1600 * also become generic pointers, but I haven't yet
1601 * devised a test case for that.
1603 DCL_TYPE (val->type) = GPOINTER;
1606 if (options.model==MODEL_LARGE) {
1607 DCL_TYPE (val->type) = FPOINTER;
1616 DCL_TYPE (val->type) = POINTER;
1619 DCL_TYPE (val->type) = CPOINTER;
1622 DCL_TYPE (val->type) = FPOINTER;
1625 DCL_TYPE (val->type) = EEPPOINTER;
1628 DCL_TYPE (val->type) = GPOINTER;
1631 /* is there is a symbol associated then */
1632 /* change the type of the symbol as well */
1635 val->sym->type = copyLinkChain (val->type);
1636 val->sym->etype = getSpec (val->sym->type);
1641 /*------------------------------------------------------------------*/
1642 /* checkFunction - does all kinds of check on a function */
1643 /*------------------------------------------------------------------*/
1645 checkFunction (symbol * sym, symbol *csym)
1647 value *exargs, *acargs;
1651 if (getenv("DEBUG_SANITY")) {
1652 fprintf (stderr, "checkFunction: %s ", sym->name);
1655 /* make sure the type is complete and sane */
1656 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1658 /* if not type then some kind of error */
1662 /* if the function has no type then make it return int */
1663 if (!sym->type->next)
1664 sym->type->next = sym->etype = newIntLink ();
1666 /* function cannot return aggregate */
1667 if (IS_AGGREGATE (sym->type->next))
1669 werror (E_FUNC_AGGR, sym->name);
1673 /* function cannot return bit */
1674 if (IS_BITVAR (sym->type->next))
1676 werror (E_FUNC_BIT, sym->name);
1680 /* check if this function is defined as calleeSaves
1681 then mark it as such */
1682 FUNC_CALLEESAVES(sym->type) = inCalleeSaveList (sym->name);
1684 /* if interrupt service routine */
1685 /* then it cannot have arguments */
1686 if (IFFUNC_ARGS(sym->type) && FUNC_ISISR (sym->type))
1688 if (!IS_VOID(FUNC_ARGS(sym->type)->type)) {
1689 werror (E_INT_ARGS, sym->name);
1690 FUNC_ARGS(sym->type)=NULL;
1694 if (!csym && !(csym = findSym (SymbolTab, sym, sym->name)))
1695 return 1; /* not defined nothing more to check */
1697 /* check if body already present */
1698 if (csym && IFFUNC_HASBODY(csym->type))
1700 werror (E_FUNC_BODY, sym->name);
1704 /* check the return value type */
1705 if (compareType (csym->type, sym->type) <= 0)
1707 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1708 printFromToType(csym->type, sym->type);
1712 if (FUNC_ISISR (csym->type) != FUNC_ISISR (sym->type))
1714 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1717 if (FUNC_REGBANK (csym->type) != FUNC_REGBANK (sym->type))
1719 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1722 if (IFFUNC_ISNAKED (csym->type) != IFFUNC_ISNAKED (sym->type))
1724 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1727 /* compare expected args with actual args */
1728 exargs = FUNC_ARGS(csym->type);
1729 acargs = FUNC_ARGS(sym->type);
1731 /* for all the expected args do */
1734 exargs = exargs->next, acargs = acargs->next, argCnt++)
1736 if (getenv("DEBUG_SANITY")) {
1737 fprintf (stderr, "checkFunction: %s ", exargs->name);
1739 /* make sure the type is complete and sane */
1740 checkTypeSanity(exargs->etype, exargs->name);
1742 /* If the actual argument is an array, any prototype
1743 * will have modified it to a pointer. Duplicate that
1746 if (IS_AGGREGATE (acargs->type))
1748 checkValue = copyValue (acargs);
1749 aggregateToPointer (checkValue);
1753 checkValue = acargs;
1756 if (compareType (exargs->type, checkValue->type) <= 0)
1758 werror (E_ARG_TYPE, argCnt);
1759 printFromToType(exargs->type, checkValue->type);
1764 /* if one them ended we have a problem */
1765 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1766 (!exargs && acargs && !IS_VOID (acargs->type)))
1767 werror (E_ARG_COUNT);
1769 /* replace with this defition */
1770 sym->cdef = csym->cdef;
1771 deleteSym (SymbolTab, csym, csym->name);
1772 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1773 if (IS_EXTERN (csym->etype) && !
1774 IS_EXTERN (sym->etype))
1776 addSet (&publics, sym);
1781 /*-----------------------------------------------------------------*/
1782 /* processFuncArgs - does some processing with function args */
1783 /*-----------------------------------------------------------------*/
1785 processFuncArgs (symbol * func)
1789 sym_link *funcType=func->type;
1791 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
1792 fprintf (stderr, "SDCCsymt.c:processFuncArgs(%s)\n", func->name);
1794 // if this is a pointer to a function
1795 if (IS_PTR(funcType)) {
1796 funcType=funcType->next;
1799 /* if this function has variable argument list */
1800 /* then make the function a reentrant one */
1801 if (IFFUNC_HASVARARGS(funcType))
1802 FUNC_ISREENT(funcType)=1;
1804 /* check if this function is defined as calleeSaves
1805 then mark it as such */
1806 FUNC_CALLEESAVES(funcType) = inCalleeSaveList (func->name);
1808 /* loop thru all the arguments */
1809 val = FUNC_ARGS(funcType);
1811 /* if it is void then remove parameters */
1812 if (val && IS_VOID (val->type))
1814 FUNC_ARGS(funcType) = NULL;
1818 /* reset regparm for the port */
1819 (*port->reset_regparms) ();
1820 /* if any of the arguments is an aggregate */
1821 /* change it to pointer to the same type */
1824 /* mark it as a register parameter if
1825 the function does not have VA_ARG
1826 and as port dictates */
1827 if (!IFFUNC_HASVARARGS(funcType) &&
1828 (*port->reg_parm) (val->type))
1830 SPEC_REGPARM (val->etype) = 1;
1833 if (IS_AGGREGATE (val->type))
1835 aggregateToPointer (val);
1842 /* if this is an internal generated function call */
1844 /* ignore --stack-auto for this one, we don't know how it is compiled */
1845 /* simply trust on --int-long-reent or --float-reent */
1846 if (IFFUNC_ISREENT(funcType)) {
1850 /* if this function is reentrant or */
1851 /* automatics r 2b stacked then nothing */
1852 if (IFFUNC_ISREENT (funcType) || options.stackAuto)
1856 val = FUNC_ARGS(funcType);
1861 /* if a symbolname is not given */
1862 /* synthesize a variable name */
1866 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1867 val->sym = newSymbol (val->name, 1);
1868 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1869 val->sym->type = copyLinkChain (val->type);
1870 val->sym->etype = getSpec (val->sym->type);
1871 val->sym->_isparm = 1;
1872 strcpy (val->sym->rname, val->name);
1873 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1874 SPEC_STAT (func->etype);
1875 addSymChain (val->sym);
1878 else /* symbol name given create synth name */
1881 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1882 strcpy (val->sym->rname, val->name);
1883 val->sym->_isparm = 1;
1884 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1885 (options.model != MODEL_SMALL ? xdata : data);
1886 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1887 SPEC_STAT (func->etype);
1893 /*-----------------------------------------------------------------*/
1894 /* isSymbolEqual - compares two symbols return 1 if they match */
1895 /*-----------------------------------------------------------------*/
1897 isSymbolEqual (symbol * dest, symbol * src)
1899 /* if pointers match then equal */
1903 /* if one of them is null then don't match */
1907 /* if both of them have rname match on rname */
1908 if (dest->rname[0] && src->rname[0])
1909 return (!strcmp (dest->rname, src->rname));
1911 /* otherwise match on name */
1912 return (!strcmp (dest->name, src->name));
1915 void PT(sym_link *type)
1917 printTypeChain(type,0);
1919 /*-----------------------------------------------------------------*/
1920 /* printTypeChain - prints the type chain in human readable form */
1921 /*-----------------------------------------------------------------*/
1923 printTypeChain (sym_link * start, FILE * of)
1926 sym_link * type, * search;
1935 fprintf (of, "void");
1939 /* print the chain as it is written in the source: */
1940 /* start with the last entry */
1941 for (type = start; type && type->next; type = type->next)
1947 if (DCL_PTR_VOLATILE (type)) {
1948 fprintf (of, "volatile ");
1950 switch (DCL_TYPE (type))
1953 fprintf (of, "function %s", (IFFUNC_ISBUILTIN(type) ? "__builtin__" : " "));
1956 if (DCL_PTR_CONST (type))
1957 fprintf (of, "const ");
1958 fprintf (of, "generic * ");
1961 if (DCL_PTR_CONST (type))
1962 fprintf (of, "const ");
1963 fprintf (of, "code * ");
1966 if (DCL_PTR_CONST (type))
1967 fprintf (of, "const ");
1968 fprintf (of, "xdata * ");
1971 if (DCL_PTR_CONST (type))
1972 fprintf (of, "const ");
1973 fprintf (of, "eeprom * ");
1977 if (DCL_PTR_CONST (type))
1978 fprintf (of, "const ");
1979 fprintf (of, "near *");
1982 if (DCL_PTR_CONST (type))
1983 fprintf (of, "const ");
1984 fprintf (of, "idata * ");
1987 if (DCL_PTR_CONST (type))
1988 fprintf (of, "const ");
1989 fprintf (of, "pdata * ");
1992 if (DCL_PTR_CONST (type))
1993 fprintf (of, "const ");
1994 fprintf (of, "unkown * ");
1997 fprintf (of, "[] ");
2003 switch (SPEC_SCLS(type))
2005 case S_DATA: fprintf (of, "data "); break;
2006 case S_XDATA: fprintf (of, "xdata "); break;
2007 case S_SFR: fprintf (of, "sfr "); break;
2008 case S_SBIT: fprintf (of, "sbit "); break;
2009 case S_CODE: fprintf (of, "code "); break;
2010 case S_IDATA: fprintf (of, "idata "); break;
2011 case S_PDATA: fprintf (of, "pdata "); break;
2012 case S_LITERAL: fprintf (of, "literal "); break;
2013 case S_STACK: fprintf (of, "stack "); break;
2014 case S_XSTACK: fprintf (of, "xstack "); break;
2015 case S_BIT: fprintf (of, "bit "); break;
2016 case S_EEPROM: fprintf (of, "eeprom "); break;
2020 if (SPEC_VOLATILE (type))
2021 fprintf (of, "volatile ");
2022 if (SPEC_USIGN (type))
2023 fprintf (of, "unsigned ");
2024 if (SPEC_CONST (type))
2025 fprintf (of, "const ");
2027 switch (SPEC_NOUN (type))
2031 fprintf (of, "long ");
2032 fprintf (of, "int");
2036 fprintf (of, "char");
2040 fprintf (of, "void");
2044 fprintf (of, "float");
2048 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2052 fprintf (of, "sbit");
2056 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2060 fprintf (of, "double");
2064 fprintf (of, "unknown type");
2068 /* search entry in list before "type" */
2069 for (search = start; search && search->next != type;)
2070 search = search->next;
2079 /*-----------------------------------------------------------------*/
2080 /* cdbTypeInfo - print the type information for debugger */
2081 /*-----------------------------------------------------------------*/
2083 cdbTypeInfo (sym_link * type, FILE * of)
2085 fprintf (of, "{%d}", getSize (type));
2090 switch (DCL_TYPE (type))
2093 fprintf (of, "DF,");
2096 fprintf (of, "DG,");
2099 fprintf (of, "DC,");
2102 fprintf (of, "DX,");
2105 fprintf (of, "DD,");
2108 fprintf (of, "DI,");
2111 fprintf (of, "DP,");
2114 fprintf (of, "DA,");
2117 fprintf (of, "DA%d,", DCL_ELEM (type));
2125 switch (SPEC_NOUN (type))
2147 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2155 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2162 if (SPEC_USIGN (type))
2170 /*-----------------------------------------------------------------*/
2171 /* cdbSymbol - prints a symbol & its type information for debugger */
2172 /*-----------------------------------------------------------------*/
2174 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2186 fprintf (of, "S:"); /* symbol record */
2187 /* if this is not a structure symbol then
2188 we need to figure out the scope information */
2194 if (IS_STATIC (sym->etype))
2195 fprintf (of, "F%s$", moduleName); /* scope is file */
2197 fprintf (of, "G$"); /* scope is global */
2200 /* symbol is local */
2201 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2204 fprintf (of, "S$"); /* scope is structure */
2206 /* print the name, & mangled name */
2207 fprintf (of, "%s$%d$%d(", sym->name,
2208 sym->level, sym->block);
2210 cdbTypeInfo (sym->type, of);
2213 /* print the address space */
2214 map = SPEC_OCLS (sym->etype);
2215 fprintf (of, "%c,%d,%d",
2216 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2218 /* if assigned to registers then output register names */
2219 /* if this is a function then print
2220 if is it an interrupt routine & interrupt number
2221 and the register bank it is using */
2223 fprintf (of, ",%d,%d,%d", FUNC_ISISR (sym->type),
2224 FUNC_INTNO (sym->type), FUNC_REGBANK (sym->type));
2225 /* alternate location to find this symbol @ : eg registers
2232 /*-----------------------------------------------------------------*/
2233 /* cdbStruct - print a structure for debugger */
2234 /*-----------------------------------------------------------------*/
2236 cdbStruct (structdef * sdef, int block, FILE * of,
2237 int inStruct, char *tag)
2242 /* if block # then must have function scope */
2243 fprintf (of, "F%s$", moduleName);
2244 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2245 for (sym = sdef->fields; sym; sym = sym->next)
2247 fprintf (of, "({%d}", sym->offset);
2248 cdbSymbol (sym, of, TRUE, FALSE);
2256 /*------------------------------------------------------------------*/
2257 /* cdbStructBlock - calls struct printing for a blcks */
2258 /*------------------------------------------------------------------*/
2260 cdbStructBlock (int block, FILE * of)
2263 bucket **table = StructTab;
2267 /* go thru the entire table */
2268 for (i = 0; i < 256; i++)
2270 for (chain = table[i]; chain; chain = chain->next)
2272 if (chain->block >= block)
2274 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2280 /*-----------------------------------------------------------------*/
2281 /* powof2 - returns power of two for the number if number is pow 2 */
2282 /*-----------------------------------------------------------------*/
2284 powof2 (unsigned long num)
2297 if (n1s > 1 || nshifts == 0)
2313 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2314 symbol *__muldiv[3][3][2];
2315 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2316 sym_link *__multypes[3][2];
2317 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2318 symbol *__conv[2][3][2];
2319 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2320 symbol *__rlrr[2][3][2];
2322 sym_link *floatType;
2325 _mangleFunctionName(char *in)
2327 if (port->getMangledFunctionName)
2329 return port->getMangledFunctionName(in);
2337 /*-----------------------------------------------------------------*/
2338 /* typeFromStr - create a typechain from an encoded string */
2339 /* basic types - 'c' - char */
2345 /* '*' - pointer - default (GPOINTER) */
2346 /* modifiers - 'u' - unsigned */
2347 /* pointer modifiers - 'g' - generic */
2351 /* examples : "ig*" - generic int * */
2352 /* "cx*" - char xdata * */
2353 /* "ui" - unsigned int */
2354 /*-----------------------------------------------------------------*/
2355 sym_link *typeFromStr (char *s)
2357 sym_link *r = newLink();
2369 r->class = SPECIFIER;
2370 SPEC_NOUN(r) = V_CHAR;
2374 r->class = SPECIFIER;
2375 SPEC_NOUN(r) = V_INT;
2378 r->class = SPECIFIER;
2379 SPEC_NOUN(r) = V_INT;
2383 r->class = SPECIFIER;
2384 SPEC_NOUN(r) = V_FLOAT;
2387 r->class = SPECIFIER;
2388 SPEC_NOUN(r) = V_VOID;
2391 DCL_TYPE(r) = GPOINTER;
2397 assert(*(s+1)=='*');
2401 r->class = DECLARATOR ;
2404 DCL_TYPE(r) = GPOINTER;
2407 DCL_TYPE(r) = FPOINTER;
2410 DCL_TYPE(r) = CPOINTER;
2413 DCL_TYPE(r) = POINTER;
2419 werror(E_INTERNAL_ERROR,"typeFromStr");
2422 if (IS_SPEC(r) && usign) {
2431 /*-----------------------------------------------------------------*/
2432 /* initCSupport - create functions for C support routines */
2433 /*-----------------------------------------------------------------*/
2437 const char *smuldivmod[] =
2441 const char *sbwd[] =
2443 "char", "int", "long"
2449 const char *srlrr[] =
2454 int bwd, su, muldivmod, tofrom, rlrr;
2456 if (getenv("SDCC_NO_C_SUPPORT")) {
2457 /* for debugging only */
2461 floatType = newFloatLink ();
2463 for (bwd = 0; bwd < 3; bwd++)
2480 __multypes[bwd][0] = l;
2481 __multypes[bwd][1] = copyLinkChain (l);
2482 SPEC_USIGN (__multypes[bwd][1]) = 1;
2485 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2486 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2487 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2488 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2489 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2490 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2491 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2492 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2493 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2494 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2496 for (tofrom = 0; tofrom < 2; tofrom++)
2498 for (bwd = 0; bwd < 3; bwd++)
2500 for (su = 0; su < 2; su++)
2504 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2505 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2509 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2510 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2516 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2518 for (bwd = 0; bwd < 3; bwd++)
2520 for (su = 0; su < 2; su++)
2522 sprintf (buffer, "_%s%s%s",
2523 smuldivmod[muldivmod],
2526 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2527 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2532 for (rlrr = 0; rlrr < 2; rlrr++)
2534 for (bwd = 0; bwd < 3; bwd++)
2536 for (su = 0; su < 2; su++)
2538 sprintf (buffer, "_%s%s%s",
2542 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2543 FUNC_NONBANKED (__rlrr[rlrr][bwd][su]->type) = 1;
2549 /*-----------------------------------------------------------------*/
2550 /* initBuiltIns - create prototypes for builtin functions */
2551 /*-----------------------------------------------------------------*/
2557 if (!port->builtintable) return ;
2559 for (i = 0 ; port->builtintable[i].name ; i++) {
2560 sym = funcOfTypeVarg(port->builtintable[i].name,port->builtintable[i].rtype,
2561 port->builtintable[i].nParms,port->builtintable[i].parm_types);
2562 FUNC_ISBUILTIN(sym->type) = 1;