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);
625 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
626 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
628 /* these are the only function attributes that will be set
629 in a specifier while parsing */
630 FUNC_NONBANKED(dest) |= FUNC_NONBANKED(src);
631 FUNC_BANKED(dest) |= FUNC_BANKED(src);
632 FUNC_ISCRITICAL(dest) |= FUNC_ISCRITICAL(src);
633 FUNC_ISREENT(dest) |= FUNC_ISREENT(src);
634 FUNC_ISNAKED(dest) |= FUNC_ISNAKED(src);
635 FUNC_ISISR(dest) |= FUNC_ISISR(src);
636 FUNC_INTNO(dest) |= FUNC_INTNO(src);
637 FUNC_REGBANK(dest) |= FUNC_REGBANK(src);
642 /*------------------------------------------------------------------*/
643 /* cloneSpec - copies the entire spec and returns a new spec */
644 /*------------------------------------------------------------------*/
646 cloneSpec (sym_link * src)
650 /* go thru chain till we find the specifier */
651 while (src && src->class != SPECIFIER)
655 memcpy (spec, src, sizeof (sym_link));
659 /*------------------------------------------------------------------*/
660 /* genSymName - generates and returns a name used for anonymous vars */
661 /*------------------------------------------------------------------*/
663 genSymName (int level)
665 static int gCount = 0;
666 static char gname[SDCC_NAME_MAX + 1];
668 sprintf (gname, "__%04d%04d", level, gCount++);
672 /*------------------------------------------------------------------*/
673 /* getSpec - returns the specifier part from a declaration chain */
674 /*------------------------------------------------------------------*/
676 getSpec (sym_link * p)
681 while (p && !(IS_SPEC (p)))
687 /*------------------------------------------------------------------*/
688 /* newCharLink() - creates an char type */
689 /*------------------------------------------------------------------*/
696 p->class = SPECIFIER;
697 SPEC_NOUN (p) = V_CHAR;
702 /*------------------------------------------------------------------*/
703 /* newFloatLink - a new Float type */
704 /*------------------------------------------------------------------*/
711 p->class = SPECIFIER;
712 SPEC_NOUN (p) = V_FLOAT;
717 /*------------------------------------------------------------------*/
718 /* newLongLink() - new long type */
719 /*------------------------------------------------------------------*/
726 p->class = SPECIFIER;
727 SPEC_NOUN (p) = V_INT;
733 /*------------------------------------------------------------------*/
734 /* newIntLink() - creates an int type */
735 /*------------------------------------------------------------------*/
742 p->class = SPECIFIER;
743 SPEC_NOUN (p) = V_INT;
748 /*------------------------------------------------------------------*/
749 /* getSize - returns size of a type chain in bits */
750 /*------------------------------------------------------------------*/
752 getSize (sym_link * p)
754 /* if nothing return 0 */
758 { /* if this is the specifier then */
759 switch (SPEC_NOUN (p))
760 { /* depending on the specifier type */
762 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
770 return SPEC_STRUCT (p)->size;
776 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
782 /* this is a specifier */
783 switch (DCL_TYPE (p))
788 return DCL_ELEM (p) * getSize (p->next);
805 /*------------------------------------------------------------------*/
806 /* bitsForType - returns # of bits required to store this type */
807 /*------------------------------------------------------------------*/
809 bitsForType (sym_link * p)
811 /* if nothing return 0 */
816 { /* if this is the specifier then */
818 switch (SPEC_NOUN (p))
819 { /* depending on the specifier type */
821 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
823 return FLOATSIZE * 8;
829 return SPEC_STRUCT (p)->size * 8;
835 return SPEC_BLEN (p);
841 /* this is a specifier */
842 switch (DCL_TYPE (p))
847 return DCL_ELEM (p) * getSize (p->next) * 8;
851 return (PTRSIZE * 8);
855 return (FPTRSIZE * 8);
857 return (GPTRSIZE * 8);
864 /*------------------------------------------------------------------*/
865 /* copySymbolChain - copies a symbol chain */
866 /*------------------------------------------------------------------*/
868 copySymbolChain (symbol * src)
875 dest = copySymbol (src);
876 dest->next = copySymbolChain (src->next);
880 /*------------------------------------------------------------------*/
881 /* copySymbol - makes a copy of a symbol */
882 /*------------------------------------------------------------------*/
884 copySymbol (symbol * src)
891 dest = newSymbol (src->name, src->level);
892 memcpy (dest, src, sizeof (symbol));
893 dest->level = src->level;
894 dest->block = src->block;
895 dest->ival = copyIlist (src->ival);
896 dest->type = copyLinkChain (src->type);
897 dest->etype = getSpec (dest->type);
899 dest->key = src->key;
900 dest->allocreq = src->allocreq;
904 /*------------------------------------------------------------------*/
905 /* reverseSyms - reverses the links for a symbol chain */
906 /*------------------------------------------------------------------*/
908 reverseSyms (symbol * sym)
910 symbol *prev, *curr, *next;
925 sym->next = (void *) NULL;
929 /*------------------------------------------------------------------*/
930 /* reverseLink - reverses the links for a type chain */
931 /*------------------------------------------------------------------*/
933 reverseLink (sym_link * type)
935 sym_link *prev, *curr, *next;
950 type->next = (void *) NULL;
954 /*------------------------------------------------------------------*/
955 /* addSymChain - adds a symbol chain to the symboltable */
956 /*------------------------------------------------------------------*/
958 addSymChain (symbol * symHead)
960 symbol *sym = symHead;
963 for (; sym != NULL; sym = sym->next)
966 checkTypeSanity(sym->etype, sym->name);
968 /* if already exists in the symbol table then check if
969 one of them is an extern definition if yes then
970 then check if the type match, if the types match then
971 delete the current entry and add the new entry */
972 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
973 csym->level == sym->level) {
975 /* one definition extern ? */
976 if (IS_EXTERN (csym->etype) || IS_EXTERN (sym->etype)) {
977 /* do types match ? */
978 if (compareType (csym->type, sym->type) != 1) {
980 werror (E_EXTERN_MISMATCH, csym->name);
983 /* delete current entry */
984 deleteSym (SymbolTab, csym, csym->name);
987 werror (E_DUPLICATE, sym->name);
993 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
998 /*------------------------------------------------------------------*/
999 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
1000 /*------------------------------------------------------------------*/
1002 funcInChain (sym_link * lnk)
1013 /*------------------------------------------------------------------*/
1014 /* structElemType - returns the type info of a sturct member */
1015 /*------------------------------------------------------------------*/
1017 structElemType (sym_link * stype, value * id)
1019 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
1020 sym_link *type, *etype;
1021 sym_link *petype = getSpec (stype);
1026 /* look for the id */
1029 if (strcmp (fields->rname, id->name) == 0)
1031 type = copyLinkChain (fields->type);
1032 etype = getSpec (type);
1033 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1034 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1037 fields = fields->next;
1039 werror (E_NOT_MEMBER, id->name);
1044 /*------------------------------------------------------------------*/
1045 /* getStructElement - returns element of a tructure definition */
1046 /*------------------------------------------------------------------*/
1048 getStructElement (structdef * sdef, symbol * sym)
1052 for (field = sdef->fields; field; field = field->next)
1053 if (strcmp (field->name, sym->name) == 0)
1056 werror (E_NOT_MEMBER, sym->name);
1058 return sdef->fields;
1061 /*------------------------------------------------------------------*/
1062 /* compStructSize - computes the size of a structure */
1063 /*------------------------------------------------------------------*/
1065 compStructSize (int su, structdef * sdef)
1067 int sum = 0, usum = 0;
1071 /* for the identifiers */
1072 loop = sdef->fields;
1075 /* create the internal name for this variable */
1076 sprintf (loop->rname, "_%s", loop->name);
1077 loop->offset = (su == UNION ? sum = 0 : sum);
1078 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1080 /* if this is a bit field */
1083 /* change it to a unsigned bit */
1084 SPEC_NOUN (loop->etype) = V_BIT;
1085 SPEC_USIGN (loop->etype) = 1;
1086 /* check if this fit into the remaining */
1087 /* bits of this byte else align it to the */
1088 /* next byte boundary */
1089 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1090 SPEC_BSTR (loop->etype) = bitOffset;
1091 if ((bitOffset += (loop->bitVar % 8)) == 8)
1094 else /* does not fit */ {
1096 SPEC_BSTR (loop->etype) = bitOffset;
1097 sum += (loop->bitVar / 8);
1098 bitOffset += (loop->bitVar % 8);
1100 /* if this is the last field then pad */
1101 if (!loop->next && bitOffset && bitOffset != 8) {
1107 checkDecl (loop, 1);
1108 sum += getSize (loop->type);
1111 #if 0 // jwk: this is done now in addDecl()
1112 /* if function then do the arguments for it */
1113 if (funcInChain (loop->type)) {
1114 processFuncArgs (loop);
1120 /* if this is not a bitfield but the */
1121 /* previous one was and did not take */
1122 /* the whole byte then pad the rest */
1123 if ((loop && !loop->bitVar) && bitOffset) {
1128 /* if union then size = sizeof larget field */
1130 usum = max (usum, sum);
1134 return (su == UNION ? usum : sum);
1137 /*------------------------------------------------------------------*/
1138 /* checkSClass - check the storage class specification */
1139 /*------------------------------------------------------------------*/
1141 checkSClass (symbol * sym, int isProto)
1143 if (getenv("DEBUG_SANITY")) {
1144 fprintf (stderr, "checkSClass: %s \n", sym->name);
1147 /* type is literal can happen foe enums change
1149 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1150 SPEC_SCLS (sym->etype) = S_AUTO;
1152 /* if sfr or sbit then must also be */
1153 /* volatile the initial value will be xlated */
1154 /* to an absolute address */
1155 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1156 SPEC_SCLS (sym->etype) == S_SFR)
1158 SPEC_VOLATILE (sym->etype) = 1;
1159 /* if initial value given */
1162 SPEC_ABSA (sym->etype) = 1;
1163 SPEC_ADDR (sym->etype) =
1164 (int) list2int (sym->ival);
1169 /* if absolute address given then it mark it as
1171 if (IS_ABSOLUTE (sym->etype))
1172 SPEC_VOLATILE (sym->etype) = 1;
1174 /* global variables declared const put into code */
1175 if (sym->level == 0 &&
1176 SPEC_CONST (sym->etype)) {
1177 SPEC_SCLS (sym->etype) = S_CODE;
1180 /* global variable in code space is a constant */
1181 if (sym->level == 0 &&
1182 SPEC_SCLS (sym->etype) == S_CODE &&
1184 SPEC_CONST (sym->etype) = 1;
1187 /* if bit variable then no storage class can be */
1188 /* specified since bit is already a storage */
1189 if (IS_BITVAR (sym->etype) &&
1190 (SPEC_SCLS (sym->etype) != S_FIXED &&
1191 SPEC_SCLS (sym->etype) != S_SBIT &&
1192 SPEC_SCLS (sym->etype) != S_BIT)
1195 werror (E_BITVAR_STORAGE, sym->name);
1196 SPEC_SCLS (sym->etype) = S_FIXED;
1199 /* extern variables cannot be initialized */
1200 if (IS_EXTERN (sym->etype) && sym->ival)
1202 werror (E_EXTERN_INIT, sym->name);
1206 /* if this is an atomatic symbol */
1207 if (sym->level && (options.stackAuto || reentrant)) {
1208 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1209 SPEC_SCLS (sym->etype) == S_FIXED ||
1210 SPEC_SCLS (sym->etype) == S_REGISTER ||
1211 SPEC_SCLS (sym->etype) == S_STACK ||
1212 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1213 SPEC_SCLS (sym->etype) = S_AUTO;
1215 /* storage class may only be specified for statics */
1216 if (!IS_STATIC(sym->etype)) {
1217 werror (E_AUTO_ASSUMED, sym->name);
1222 /* automatic symbols cannot be given */
1223 /* an absolute address ignore it */
1225 SPEC_ABSA (sym->etype) &&
1226 (options.stackAuto || reentrant))
1228 werror (E_AUTO_ABSA, sym->name);
1229 SPEC_ABSA (sym->etype) = 0;
1232 /* arrays & pointers cannot be defined for bits */
1233 /* SBITS or SFRs or BIT */
1234 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1235 (SPEC_NOUN (sym->etype) == V_BIT ||
1236 SPEC_NOUN (sym->etype) == V_SBIT ||
1237 SPEC_SCLS (sym->etype) == S_SFR))
1238 werror (E_BIT_ARRAY, sym->name);
1240 /* if this is a bit|sbit then set length & start */
1241 if (SPEC_NOUN (sym->etype) == V_BIT ||
1242 SPEC_NOUN (sym->etype) == V_SBIT)
1244 SPEC_BLEN (sym->etype) = 1;
1245 SPEC_BSTR (sym->etype) = 0;
1249 /* variables declared in CODE space must have */
1250 /* initializers if not an extern */
1251 if (SPEC_SCLS (sym->etype) == S_CODE &&
1252 sym->ival == NULL &&
1254 port->mem.code_ro &&
1255 !IS_EXTERN (sym->etype) &&
1256 !funcInChain (sym->type))
1257 werror (E_CODE_NO_INIT, sym->name);
1260 /* if parameter or local variable then change */
1261 /* the storage class to reflect where the var will go */
1262 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1263 !IS_STATIC(sym->etype))
1265 if (options.stackAuto || (currFunc && IFFUNC_ISREENT (currFunc->type)))
1267 SPEC_SCLS (sym->etype) = (options.useXstack ?
1268 S_XSTACK : S_STACK);
1272 /* hack-o-matic! I see no reason why the useXstack option should ever
1273 * control this allcoation, but the code was originally that way, and
1274 * changing it for non-390 ports breaks the compiler badly.
1276 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1277 SPEC_SCLS (sym->etype) = (useXdata ?
1283 /*------------------------------------------------------------------*/
1284 /* changePointer - change pointer to functions */
1285 /*------------------------------------------------------------------*/
1287 changePointer (symbol * sym)
1291 /* go thru the chain of declarations */
1292 /* if we find a pointer to a function */
1293 /* unconditionally change it to a ptr */
1295 for (p = sym->type; p; p = p->next)
1297 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1298 DCL_TYPE (p) = GPOINTER;
1299 if (IS_PTR (p) && IS_FUNC (p->next))
1300 DCL_TYPE (p) = CPOINTER;
1304 /*------------------------------------------------------------------*/
1305 /* checkDecl - does semantic validation of a declaration */
1306 /*------------------------------------------------------------------*/
1308 checkDecl (symbol * sym, int isProto)
1311 checkSClass (sym, isProto); /* check the storage class */
1312 changePointer (sym); /* change pointers if required */
1314 /* if this is an array without any dimension
1315 then update the dimension from the initial value */
1316 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1317 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1322 /*------------------------------------------------------------------*/
1323 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1324 /*------------------------------------------------------------------*/
1326 copyLinkChain (sym_link * p)
1328 sym_link *head, *curr, *loop;
1331 head = loop = (curr ? newLink () : (void *) NULL);
1334 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1335 loop->next = (curr->next ? newLink () : (void *) NULL);
1344 /*------------------------------------------------------------------*/
1345 /* cleanUpBlock - cleansup the symbol table specified for all the */
1346 /* symbols in the given block */
1347 /*------------------------------------------------------------------*/
1349 cleanUpBlock (bucket ** table, int block)
1354 /* go thru the entire table */
1355 for (i = 0; i < 256; i++)
1357 for (chain = table[i]; chain; chain = chain->next)
1359 if (chain->block >= block)
1361 deleteSym (table, chain->sym, chain->name);
1367 /*------------------------------------------------------------------*/
1368 /* cleanUpLevel - cleansup the symbol table specified for all the */
1369 /* symbols in the given level */
1370 /*------------------------------------------------------------------*/
1372 cleanUpLevel (bucket ** table, int level)
1377 /* go thru the entire table */
1378 for (i = 0; i < 256; i++)
1380 for (chain = table[i]; chain; chain = chain->next)
1382 if (chain->level >= level)
1384 deleteSym (table, chain->sym, chain->name);
1390 /*------------------------------------------------------------------*/
1391 /* computeType - computes the resultant type from two types */
1392 /*------------------------------------------------------------------*/
1394 computeType (sym_link * type1, sym_link * type2)
1398 sym_link *etype1 = getSpec (type1);
1399 sym_link *etype2 = getSpec (type2);
1401 /* if one of them is a float then result is a float */
1402 /* here we assume that the types passed are okay */
1403 /* and can be cast to one another */
1404 /* which ever is greater in size */
1405 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1406 rType = newFloatLink ();
1408 /* if only one of them is a bit variable
1409 then the other one prevails */
1410 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1411 rType = copyLinkChain (type2);
1412 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1413 rType = copyLinkChain (type1);
1415 /* if one of them is a pointer then that
1418 rType = copyLinkChain (type1);
1419 else if (IS_PTR (type2))
1420 rType = copyLinkChain (type2);
1421 else if (getSize (type1) > getSize (type2))
1422 rType = copyLinkChain (type1);
1424 rType = copyLinkChain (type2);
1426 reType = getSpec (rType);
1428 /* if either of them unsigned but not val then make this unsigned */
1429 if (((!IS_LITERAL(type1) && SPEC_USIGN (etype1)) ||
1430 (!IS_LITERAL(type2) && SPEC_USIGN (etype2))) &&
1432 SPEC_USIGN (reType) = 1;
1434 SPEC_USIGN (reType) = 0;
1436 /* if result is a literal then make not so */
1437 if (IS_LITERAL (reType))
1438 SPEC_SCLS (reType) = S_REGISTER;
1443 /*--------------------------------------------------------------------*/
1444 /* compareType - will do type check return 1 if match, -1 if castable */
1445 /*--------------------------------------------------------------------*/
1447 compareType (sym_link * dest, sym_link * src)
1458 /* if dest is a declarator then */
1463 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1465 //checkFunction(src,dest);
1467 return compareType (dest->next, src->next);
1469 if (IS_PTR (src) && IS_GENPTR (dest))
1471 if (IS_PTR (dest) && IS_ARRAY (src)) {
1472 value *val=aggregateToPointer (valFromType(src));
1473 int res=compareType (dest, val->type);
1474 Safe_free(val->type);
1476 //return res ? -1 : 0;
1479 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1480 return compareType (dest->next, src);
1483 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1489 /* if one is a specifier and the other is not */
1490 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1491 (IS_SPEC (dest) && !IS_SPEC (src)))
1494 /* if one of them is a void then ok */
1495 if (SPEC_NOUN (dest) == V_VOID &&
1496 SPEC_NOUN (src) != V_VOID)
1499 if (SPEC_NOUN (dest) != V_VOID &&
1500 SPEC_NOUN (src) == V_VOID)
1503 /* if they are both bitfields then if the lengths
1504 and starts don't match */
1505 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1506 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1507 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1510 /* it is a specifier */
1511 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1513 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1514 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1515 getSize (dest) == getSize (src))
1517 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1522 else if (IS_STRUCT (dest))
1524 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1529 if (SPEC_LONG (dest) != SPEC_LONG (src))
1532 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1538 /*------------------------------------------------------------------*/
1539 /* inCalleeSaveList - return 1 if found in callee save list */
1540 /*------------------------------------------------------------------*/
1542 inCalleeSaveList (char *s)
1546 for (i = 0; options.calleeSaves[i]; i++)
1547 if (strcmp (options.calleeSaves[i], s) == 0)
1553 /*-----------------------------------------------------------------*/
1554 /* aggregateToPointer: change an agggregate type function */
1555 /* argument to a pointer to that type. */
1556 /*-----------------------------------------------------------------*/
1558 aggregateToPointer (value * val)
1560 if (IS_AGGREGATE (val->type))
1562 /* if this is a structure */
1563 /* then we need to add a new link */
1564 if (IS_STRUCT (val->type))
1566 /* first lets add DECLARATOR type */
1567 sym_link *p = val->type;
1569 werror (W_STRUCT_AS_ARG, val->name);
1570 val->type = newLink ();
1571 val->type->next = p;
1574 /* change to a pointer depending on the */
1575 /* storage class specified */
1576 switch (SPEC_SCLS (val->etype))
1579 DCL_TYPE (val->type) = IPOINTER;
1582 DCL_TYPE (val->type) = PPOINTER;
1585 DCL_TYPE(val->type)=PTR_TYPE(SPEC_OCLS(val->etype));
1587 if (TARGET_IS_DS390)
1589 /* The AUTO and REGISTER classes should probably
1590 * also become generic pointers, but I haven't yet
1591 * devised a test case for that.
1593 DCL_TYPE (val->type) = GPOINTER;
1596 if (options.model==MODEL_LARGE) {
1597 DCL_TYPE (val->type) = FPOINTER;
1604 DCL_TYPE (val->type) = POINTER;
1607 DCL_TYPE (val->type) = CPOINTER;
1610 DCL_TYPE (val->type) = FPOINTER;
1613 DCL_TYPE (val->type) = EEPPOINTER;
1616 DCL_TYPE (val->type) = GPOINTER;
1619 /* is there is a symbol associated then */
1620 /* change the type of the symbol as well */
1623 val->sym->type = copyLinkChain (val->type);
1624 val->sym->etype = getSpec (val->sym->type);
1629 /*------------------------------------------------------------------*/
1630 /* checkFunction - does all kinds of check on a function */
1631 /*------------------------------------------------------------------*/
1633 checkFunction (symbol * sym, symbol *csym)
1635 value *exargs, *acargs;
1639 if (getenv("DEBUG_SANITY")) {
1640 fprintf (stderr, "checkFunction: %s ", sym->name);
1643 /* make sure the type is complete and sane */
1644 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1646 /* if not type then some kind of error */
1650 /* if the function has no type then make it return int */
1651 if (!sym->type->next)
1652 sym->type->next = sym->etype = newIntLink ();
1654 /* function cannot return aggregate */
1655 if (IS_AGGREGATE (sym->type->next))
1657 werror (E_FUNC_AGGR, sym->name);
1661 /* function cannot return bit */
1662 if (IS_BITVAR (sym->type->next))
1664 werror (E_FUNC_BIT, sym->name);
1668 /* check if this function is defined as calleeSaves
1669 then mark it as such */
1670 FUNC_CALLEESAVES(sym->type) = inCalleeSaveList (sym->name);
1672 /* if interrupt service routine */
1673 /* then it cannot have arguments */
1674 if (IFFUNC_ARGS(sym->type) && FUNC_ISISR (sym->type))
1676 if (!IS_VOID(FUNC_ARGS(sym->type)->type)) {
1677 werror (E_INT_ARGS, sym->name);
1678 FUNC_ARGS(sym->type)=NULL;
1682 if (!csym && !(csym = findSym (SymbolTab, sym, sym->name)))
1683 return 1; /* not defined nothing more to check */
1685 /* check if body already present */
1686 if (csym && IFFUNC_HASBODY(csym->type))
1688 werror (E_FUNC_BODY, sym->name);
1692 /* check the return value type */
1693 if (compareType (csym->type, sym->type) <= 0)
1695 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1696 printFromToType(csym->type, sym->type);
1700 if (FUNC_ISISR (csym->type) != FUNC_ISISR (sym->type))
1702 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1705 if (FUNC_REGBANK (csym->type) != FUNC_REGBANK (sym->type))
1707 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1710 if (IFFUNC_ISNAKED (csym->type) != IFFUNC_ISNAKED (sym->type))
1712 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1715 /* compare expected args with actual args */
1716 exargs = FUNC_ARGS(csym->type);
1717 acargs = FUNC_ARGS(sym->type);
1719 /* for all the expected args do */
1722 exargs = exargs->next, acargs = acargs->next, argCnt++)
1724 if (getenv("DEBUG_SANITY")) {
1725 fprintf (stderr, "checkFunction: %s ", exargs->name);
1727 /* make sure the type is complete and sane */
1728 checkTypeSanity(exargs->etype, exargs->name);
1730 /* If the actual argument is an array, any prototype
1731 * will have modified it to a pointer. Duplicate that
1734 if (IS_AGGREGATE (acargs->type))
1736 checkValue = copyValue (acargs);
1737 aggregateToPointer (checkValue);
1741 checkValue = acargs;
1744 if (compareType (exargs->type, checkValue->type) <= 0)
1746 werror (E_ARG_TYPE, argCnt);
1747 printFromToType(exargs->type, checkValue->type);
1752 /* if one them ended we have a problem */
1753 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1754 (!exargs && acargs && !IS_VOID (acargs->type)))
1755 werror (E_ARG_COUNT);
1757 /* replace with this defition */
1758 sym->cdef = csym->cdef;
1759 deleteSym (SymbolTab, csym, csym->name);
1760 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1761 if (IS_EXTERN (csym->etype) && !
1762 IS_EXTERN (sym->etype))
1764 addSet (&publics, sym);
1769 /*-----------------------------------------------------------------*/
1770 /* processFuncArgs - does some processing with function args */
1771 /*-----------------------------------------------------------------*/
1773 processFuncArgs (symbol * func)
1777 sym_link *funcType=func->type;
1779 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
1780 fprintf (stderr, "SDCCsymt.c:processFuncArgs(%s)\n", func->name);
1782 // if this is a pointer to a function
1783 if (IS_PTR(funcType)) {
1784 funcType=funcType->next;
1787 /* if this function has variable argument list */
1788 /* then make the function a reentrant one */
1789 if (IFFUNC_HASVARARGS(funcType))
1790 FUNC_ISREENT(funcType)=1;
1792 /* check if this function is defined as calleeSaves
1793 then mark it as such */
1794 FUNC_CALLEESAVES(funcType) = inCalleeSaveList (func->name);
1796 /* loop thru all the arguments */
1797 val = FUNC_ARGS(funcType);
1799 /* if it is void then remove parameters */
1800 if (val && IS_VOID (val->type))
1802 FUNC_ARGS(funcType) = NULL;
1806 /* reset regparm for the port */
1807 (*port->reset_regparms) ();
1808 /* if any of the arguments is an aggregate */
1809 /* change it to pointer to the same type */
1812 /* mark it as a register parameter if
1813 the function does not have VA_ARG
1814 and as port dictates */
1815 if (!IFFUNC_HASVARARGS(funcType) &&
1816 (*port->reg_parm) (val->type))
1818 SPEC_REGPARM (val->etype) = 1;
1821 if (IS_AGGREGATE (val->type))
1823 aggregateToPointer (val);
1830 /* if this is an internal generated function call */
1832 /* ignore --stack-auto for this one, we don't know how it is compiled */
1833 /* simply trust on --int-long-reent or --float-reent */
1834 if (IFFUNC_ISREENT(funcType)) {
1838 /* if this function is reentrant or */
1839 /* automatics r 2b stacked then nothing */
1840 if (IFFUNC_ISREENT (funcType) || options.stackAuto)
1844 val = FUNC_ARGS(funcType);
1849 /* if a symbolname is not given */
1850 /* synthesize a variable name */
1854 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1855 val->sym = newSymbol (val->name, 1);
1856 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1857 val->sym->type = copyLinkChain (val->type);
1858 val->sym->etype = getSpec (val->sym->type);
1859 val->sym->_isparm = 1;
1860 strcpy (val->sym->rname, val->name);
1861 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1862 SPEC_STAT (func->etype);
1863 addSymChain (val->sym);
1866 else /* symbol name given create synth name */
1869 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1870 strcpy (val->sym->rname, val->name);
1871 val->sym->_isparm = 1;
1872 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1873 (options.model != MODEL_SMALL ? xdata : data);
1874 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1875 SPEC_STAT (func->etype);
1881 /*-----------------------------------------------------------------*/
1882 /* isSymbolEqual - compares two symbols return 1 if they match */
1883 /*-----------------------------------------------------------------*/
1885 isSymbolEqual (symbol * dest, symbol * src)
1887 /* if pointers match then equal */
1891 /* if one of them is null then don't match */
1895 /* if both of them have rname match on rname */
1896 if (dest->rname[0] && src->rname[0])
1897 return (!strcmp (dest->rname, src->rname));
1899 /* otherwise match on name */
1900 return (!strcmp (dest->name, src->name));
1903 void PT(sym_link *type)
1905 printTypeChain(type,0);
1907 /*-----------------------------------------------------------------*/
1908 /* printTypeChain - prints the type chain in human readable form */
1909 /*-----------------------------------------------------------------*/
1911 printTypeChain (sym_link * start, FILE * of)
1914 sym_link * type, * search;
1923 fprintf (of, "void");
1927 /* print the chain as it is written in the source: */
1928 /* start with the last entry */
1929 for (type = start; type && type->next; type = type->next)
1935 if (DCL_PTR_VOLATILE (type)) {
1936 fprintf (of, "volatile ");
1938 switch (DCL_TYPE (type))
1941 fprintf (of, "function ");
1944 if (DCL_PTR_CONST (type))
1945 fprintf (of, "const ");
1946 fprintf (of, "generic * ");
1949 if (DCL_PTR_CONST (type))
1950 fprintf (of, "const ");
1951 fprintf (of, "code * ");
1954 if (DCL_PTR_CONST (type))
1955 fprintf (of, "const ");
1956 fprintf (of, "xdata * ");
1959 if (DCL_PTR_CONST (type))
1960 fprintf (of, "const ");
1961 fprintf (of, "eeprom * ");
1965 if (DCL_PTR_CONST (type))
1966 fprintf (of, "const ");
1967 fprintf (of, "near *");
1970 if (DCL_PTR_CONST (type))
1971 fprintf (of, "const ");
1972 fprintf (of, "idata * ");
1975 if (DCL_PTR_CONST (type))
1976 fprintf (of, "const ");
1977 fprintf (of, "pdata * ");
1980 if (DCL_PTR_CONST (type))
1981 fprintf (of, "const ");
1982 fprintf (of, "unkown * ");
1985 fprintf (of, "[] ");
1991 switch (SPEC_SCLS(type))
1993 case S_DATA: fprintf (of, "data "); break;
1994 case S_XDATA: fprintf (of, "xdata "); break;
1995 case S_SFR: fprintf (of, "sfr "); break;
1996 case S_SBIT: fprintf (of, "sbit "); break;
1997 case S_CODE: fprintf (of, "code "); break;
1998 case S_IDATA: fprintf (of, "idata "); break;
1999 case S_PDATA: fprintf (of, "pdata "); break;
2000 case S_LITERAL: fprintf (of, "literal "); break;
2001 case S_STACK: fprintf (of, "stack "); break;
2002 case S_XSTACK: fprintf (of, "xstack "); break;
2003 case S_BIT: fprintf (of, "bit "); break;
2004 case S_EEPROM: fprintf (of, "eeprom "); break;
2008 if (SPEC_VOLATILE (type))
2009 fprintf (of, "volatile ");
2010 if (SPEC_USIGN (type))
2011 fprintf (of, "unsigned ");
2012 if (SPEC_CONST (type))
2013 fprintf (of, "const ");
2015 switch (SPEC_NOUN (type))
2019 fprintf (of, "long ");
2020 fprintf (of, "int");
2024 fprintf (of, "char");
2028 fprintf (of, "void");
2032 fprintf (of, "float");
2036 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2040 fprintf (of, "sbit");
2044 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2048 fprintf (of, "double");
2052 fprintf (of, "unknown type");
2056 /* search entry in list before "type" */
2057 for (search = start; search && search->next != type;)
2058 search = search->next;
2067 /*-----------------------------------------------------------------*/
2068 /* cdbTypeInfo - print the type information for debugger */
2069 /*-----------------------------------------------------------------*/
2071 cdbTypeInfo (sym_link * type, FILE * of)
2073 fprintf (of, "{%d}", getSize (type));
2078 switch (DCL_TYPE (type))
2081 fprintf (of, "DF,");
2084 fprintf (of, "DG,");
2087 fprintf (of, "DC,");
2090 fprintf (of, "DX,");
2093 fprintf (of, "DD,");
2096 fprintf (of, "DI,");
2099 fprintf (of, "DP,");
2102 fprintf (of, "DA,");
2105 fprintf (of, "DA%d,", DCL_ELEM (type));
2113 switch (SPEC_NOUN (type))
2135 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2143 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2150 if (SPEC_USIGN (type))
2158 /*-----------------------------------------------------------------*/
2159 /* cdbSymbol - prints a symbol & its type information for debugger */
2160 /*-----------------------------------------------------------------*/
2162 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2174 fprintf (of, "S:"); /* symbol record */
2175 /* if this is not a structure symbol then
2176 we need to figure out the scope information */
2182 if (IS_STATIC (sym->etype))
2183 fprintf (of, "F%s$", moduleName); /* scope is file */
2185 fprintf (of, "G$"); /* scope is global */
2188 /* symbol is local */
2189 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2192 fprintf (of, "S$"); /* scope is structure */
2194 /* print the name, & mangled name */
2195 fprintf (of, "%s$%d$%d(", sym->name,
2196 sym->level, sym->block);
2198 cdbTypeInfo (sym->type, of);
2201 /* print the address space */
2202 map = SPEC_OCLS (sym->etype);
2203 fprintf (of, "%c,%d,%d",
2204 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2206 /* if assigned to registers then output register names */
2207 /* if this is a function then print
2208 if is it an interrupt routine & interrupt number
2209 and the register bank it is using */
2211 fprintf (of, ",%d,%d,%d", FUNC_ISISR (sym->type),
2212 FUNC_INTNO (sym->type), FUNC_REGBANK (sym->type));
2213 /* alternate location to find this symbol @ : eg registers
2220 /*-----------------------------------------------------------------*/
2221 /* cdbStruct - print a structure for debugger */
2222 /*-----------------------------------------------------------------*/
2224 cdbStruct (structdef * sdef, int block, FILE * of,
2225 int inStruct, char *tag)
2230 /* if block # then must have function scope */
2231 fprintf (of, "F%s$", moduleName);
2232 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2233 for (sym = sdef->fields; sym; sym = sym->next)
2235 fprintf (of, "({%d}", sym->offset);
2236 cdbSymbol (sym, of, TRUE, FALSE);
2244 /*------------------------------------------------------------------*/
2245 /* cdbStructBlock - calls struct printing for a blcks */
2246 /*------------------------------------------------------------------*/
2248 cdbStructBlock (int block, FILE * of)
2251 bucket **table = StructTab;
2255 /* go thru the entire table */
2256 for (i = 0; i < 256; i++)
2258 for (chain = table[i]; chain; chain = chain->next)
2260 if (chain->block >= block)
2262 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2268 /*-----------------------------------------------------------------*/
2269 /* powof2 - returns power of two for the number if number is pow 2 */
2270 /*-----------------------------------------------------------------*/
2272 powof2 (unsigned long num)
2285 if (n1s > 1 || nshifts == 0)
2301 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2302 symbol *__muldiv[3][3][2];
2303 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2304 sym_link *__multypes[3][2];
2305 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2306 symbol *__conv[2][3][2];
2307 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2308 symbol *__rlrr[2][3][2];
2310 sym_link *floatType;
2313 _mangleFunctionName(char *in)
2315 if (port->getMangledFunctionName)
2317 return port->getMangledFunctionName(in);
2325 /*-----------------------------------------------------------------*/
2326 /* initCSupport - create functions for C support routines */
2327 /*-----------------------------------------------------------------*/
2331 const char *smuldivmod[] =
2335 const char *sbwd[] =
2337 "char", "int", "long"
2343 const char *srlrr[] =
2348 int bwd, su, muldivmod, tofrom, rlrr;
2350 if (getenv("SDCC_NO_C_SUPPORT")) {
2351 /* for debugging only */
2355 floatType = newFloatLink ();
2357 for (bwd = 0; bwd < 3; bwd++)
2374 __multypes[bwd][0] = l;
2375 __multypes[bwd][1] = copyLinkChain (l);
2376 SPEC_USIGN (__multypes[bwd][1]) = 1;
2379 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2380 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2381 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2382 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2383 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2384 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2385 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2386 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2387 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2388 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2390 for (tofrom = 0; tofrom < 2; tofrom++)
2392 for (bwd = 0; bwd < 3; bwd++)
2394 for (su = 0; su < 2; su++)
2398 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2399 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2403 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2404 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2410 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2412 for (bwd = 0; bwd < 3; bwd++)
2414 for (su = 0; su < 2; su++)
2416 sprintf (buffer, "_%s%s%s",
2417 smuldivmod[muldivmod],
2420 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2421 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2426 for (rlrr = 0; rlrr < 2; rlrr++)
2428 for (bwd = 0; bwd < 3; bwd++)
2430 for (su = 0; su < 2; su++)
2432 sprintf (buffer, "_%s%s%s",
2436 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2437 FUNC_NONBANKED (__rlrr[rlrr][bwd][su]->type) = 1;