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 if (SPEC_OCLS(val->etype)) {
1586 DCL_TYPE(val->type)=PTR_TYPE(SPEC_OCLS(val->etype));
1590 if (TARGET_IS_DS390)
1592 /* The AUTO and REGISTER classes should probably
1593 * also become generic pointers, but I haven't yet
1594 * devised a test case for that.
1596 DCL_TYPE (val->type) = GPOINTER;
1599 if (options.model==MODEL_LARGE) {
1600 DCL_TYPE (val->type) = FPOINTER;
1607 DCL_TYPE (val->type) = POINTER;
1610 DCL_TYPE (val->type) = CPOINTER;
1613 DCL_TYPE (val->type) = FPOINTER;
1616 DCL_TYPE (val->type) = EEPPOINTER;
1619 DCL_TYPE (val->type) = GPOINTER;
1622 /* is there is a symbol associated then */
1623 /* change the type of the symbol as well */
1626 val->sym->type = copyLinkChain (val->type);
1627 val->sym->etype = getSpec (val->sym->type);
1632 /*------------------------------------------------------------------*/
1633 /* checkFunction - does all kinds of check on a function */
1634 /*------------------------------------------------------------------*/
1636 checkFunction (symbol * sym, symbol *csym)
1638 value *exargs, *acargs;
1642 if (getenv("DEBUG_SANITY")) {
1643 fprintf (stderr, "checkFunction: %s ", sym->name);
1646 /* make sure the type is complete and sane */
1647 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1649 /* if not type then some kind of error */
1653 /* if the function has no type then make it return int */
1654 if (!sym->type->next)
1655 sym->type->next = sym->etype = newIntLink ();
1657 /* function cannot return aggregate */
1658 if (IS_AGGREGATE (sym->type->next))
1660 werror (E_FUNC_AGGR, sym->name);
1664 /* function cannot return bit */
1665 if (IS_BITVAR (sym->type->next))
1667 werror (E_FUNC_BIT, sym->name);
1671 /* check if this function is defined as calleeSaves
1672 then mark it as such */
1673 FUNC_CALLEESAVES(sym->type) = inCalleeSaveList (sym->name);
1675 /* if interrupt service routine */
1676 /* then it cannot have arguments */
1677 if (IFFUNC_ARGS(sym->type) && FUNC_ISISR (sym->type))
1679 if (!IS_VOID(FUNC_ARGS(sym->type)->type)) {
1680 werror (E_INT_ARGS, sym->name);
1681 FUNC_ARGS(sym->type)=NULL;
1685 if (!csym && !(csym = findSym (SymbolTab, sym, sym->name)))
1686 return 1; /* not defined nothing more to check */
1688 /* check if body already present */
1689 if (csym && IFFUNC_HASBODY(csym->type))
1691 werror (E_FUNC_BODY, sym->name);
1695 /* check the return value type */
1696 if (compareType (csym->type, sym->type) <= 0)
1698 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1699 printFromToType(csym->type, sym->type);
1703 if (FUNC_ISISR (csym->type) != FUNC_ISISR (sym->type))
1705 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1708 if (FUNC_REGBANK (csym->type) != FUNC_REGBANK (sym->type))
1710 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1713 if (IFFUNC_ISNAKED (csym->type) != IFFUNC_ISNAKED (sym->type))
1715 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1718 /* compare expected args with actual args */
1719 exargs = FUNC_ARGS(csym->type);
1720 acargs = FUNC_ARGS(sym->type);
1722 /* for all the expected args do */
1725 exargs = exargs->next, acargs = acargs->next, argCnt++)
1727 if (getenv("DEBUG_SANITY")) {
1728 fprintf (stderr, "checkFunction: %s ", exargs->name);
1730 /* make sure the type is complete and sane */
1731 checkTypeSanity(exargs->etype, exargs->name);
1733 /* If the actual argument is an array, any prototype
1734 * will have modified it to a pointer. Duplicate that
1737 if (IS_AGGREGATE (acargs->type))
1739 checkValue = copyValue (acargs);
1740 aggregateToPointer (checkValue);
1744 checkValue = acargs;
1747 if (compareType (exargs->type, checkValue->type) <= 0)
1749 werror (E_ARG_TYPE, argCnt);
1750 printFromToType(exargs->type, checkValue->type);
1755 /* if one them ended we have a problem */
1756 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1757 (!exargs && acargs && !IS_VOID (acargs->type)))
1758 werror (E_ARG_COUNT);
1760 /* replace with this defition */
1761 sym->cdef = csym->cdef;
1762 deleteSym (SymbolTab, csym, csym->name);
1763 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1764 if (IS_EXTERN (csym->etype) && !
1765 IS_EXTERN (sym->etype))
1767 addSet (&publics, sym);
1772 /*-----------------------------------------------------------------*/
1773 /* processFuncArgs - does some processing with function args */
1774 /*-----------------------------------------------------------------*/
1776 processFuncArgs (symbol * func)
1780 sym_link *funcType=func->type;
1782 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
1783 fprintf (stderr, "SDCCsymt.c:processFuncArgs(%s)\n", func->name);
1785 // if this is a pointer to a function
1786 if (IS_PTR(funcType)) {
1787 funcType=funcType->next;
1790 /* if this function has variable argument list */
1791 /* then make the function a reentrant one */
1792 if (IFFUNC_HASVARARGS(funcType))
1793 FUNC_ISREENT(funcType)=1;
1795 /* check if this function is defined as calleeSaves
1796 then mark it as such */
1797 FUNC_CALLEESAVES(funcType) = inCalleeSaveList (func->name);
1799 /* loop thru all the arguments */
1800 val = FUNC_ARGS(funcType);
1802 /* if it is void then remove parameters */
1803 if (val && IS_VOID (val->type))
1805 FUNC_ARGS(funcType) = NULL;
1809 /* reset regparm for the port */
1810 (*port->reset_regparms) ();
1811 /* if any of the arguments is an aggregate */
1812 /* change it to pointer to the same type */
1815 /* mark it as a register parameter if
1816 the function does not have VA_ARG
1817 and as port dictates */
1818 if (!IFFUNC_HASVARARGS(funcType) &&
1819 (*port->reg_parm) (val->type))
1821 SPEC_REGPARM (val->etype) = 1;
1824 if (IS_AGGREGATE (val->type))
1826 aggregateToPointer (val);
1833 /* if this is an internal generated function call */
1835 /* ignore --stack-auto for this one, we don't know how it is compiled */
1836 /* simply trust on --int-long-reent or --float-reent */
1837 if (IFFUNC_ISREENT(funcType)) {
1841 /* if this function is reentrant or */
1842 /* automatics r 2b stacked then nothing */
1843 if (IFFUNC_ISREENT (funcType) || options.stackAuto)
1847 val = FUNC_ARGS(funcType);
1852 /* if a symbolname is not given */
1853 /* synthesize a variable name */
1857 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1858 val->sym = newSymbol (val->name, 1);
1859 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1860 val->sym->type = copyLinkChain (val->type);
1861 val->sym->etype = getSpec (val->sym->type);
1862 val->sym->_isparm = 1;
1863 strcpy (val->sym->rname, val->name);
1864 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1865 SPEC_STAT (func->etype);
1866 addSymChain (val->sym);
1869 else /* symbol name given create synth name */
1872 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1873 strcpy (val->sym->rname, val->name);
1874 val->sym->_isparm = 1;
1875 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1876 (options.model != MODEL_SMALL ? xdata : data);
1877 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1878 SPEC_STAT (func->etype);
1884 /*-----------------------------------------------------------------*/
1885 /* isSymbolEqual - compares two symbols return 1 if they match */
1886 /*-----------------------------------------------------------------*/
1888 isSymbolEqual (symbol * dest, symbol * src)
1890 /* if pointers match then equal */
1894 /* if one of them is null then don't match */
1898 /* if both of them have rname match on rname */
1899 if (dest->rname[0] && src->rname[0])
1900 return (!strcmp (dest->rname, src->rname));
1902 /* otherwise match on name */
1903 return (!strcmp (dest->name, src->name));
1906 void PT(sym_link *type)
1908 printTypeChain(type,0);
1910 /*-----------------------------------------------------------------*/
1911 /* printTypeChain - prints the type chain in human readable form */
1912 /*-----------------------------------------------------------------*/
1914 printTypeChain (sym_link * start, FILE * of)
1917 sym_link * type, * search;
1926 fprintf (of, "void");
1930 /* print the chain as it is written in the source: */
1931 /* start with the last entry */
1932 for (type = start; type && type->next; type = type->next)
1938 if (DCL_PTR_VOLATILE (type)) {
1939 fprintf (of, "volatile ");
1941 switch (DCL_TYPE (type))
1944 fprintf (of, "function ");
1947 if (DCL_PTR_CONST (type))
1948 fprintf (of, "const ");
1949 fprintf (of, "generic * ");
1952 if (DCL_PTR_CONST (type))
1953 fprintf (of, "const ");
1954 fprintf (of, "code * ");
1957 if (DCL_PTR_CONST (type))
1958 fprintf (of, "const ");
1959 fprintf (of, "xdata * ");
1962 if (DCL_PTR_CONST (type))
1963 fprintf (of, "const ");
1964 fprintf (of, "eeprom * ");
1968 if (DCL_PTR_CONST (type))
1969 fprintf (of, "const ");
1970 fprintf (of, "near *");
1973 if (DCL_PTR_CONST (type))
1974 fprintf (of, "const ");
1975 fprintf (of, "idata * ");
1978 if (DCL_PTR_CONST (type))
1979 fprintf (of, "const ");
1980 fprintf (of, "pdata * ");
1983 if (DCL_PTR_CONST (type))
1984 fprintf (of, "const ");
1985 fprintf (of, "unkown * ");
1988 fprintf (of, "[] ");
1994 switch (SPEC_SCLS(type))
1996 case S_DATA: fprintf (of, "data "); break;
1997 case S_XDATA: fprintf (of, "xdata "); break;
1998 case S_SFR: fprintf (of, "sfr "); break;
1999 case S_SBIT: fprintf (of, "sbit "); break;
2000 case S_CODE: fprintf (of, "code "); break;
2001 case S_IDATA: fprintf (of, "idata "); break;
2002 case S_PDATA: fprintf (of, "pdata "); break;
2003 case S_LITERAL: fprintf (of, "literal "); break;
2004 case S_STACK: fprintf (of, "stack "); break;
2005 case S_XSTACK: fprintf (of, "xstack "); break;
2006 case S_BIT: fprintf (of, "bit "); break;
2007 case S_EEPROM: fprintf (of, "eeprom "); break;
2011 if (SPEC_VOLATILE (type))
2012 fprintf (of, "volatile ");
2013 if (SPEC_USIGN (type))
2014 fprintf (of, "unsigned ");
2015 if (SPEC_CONST (type))
2016 fprintf (of, "const ");
2018 switch (SPEC_NOUN (type))
2022 fprintf (of, "long ");
2023 fprintf (of, "int");
2027 fprintf (of, "char");
2031 fprintf (of, "void");
2035 fprintf (of, "float");
2039 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2043 fprintf (of, "sbit");
2047 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2051 fprintf (of, "double");
2055 fprintf (of, "unknown type");
2059 /* search entry in list before "type" */
2060 for (search = start; search && search->next != type;)
2061 search = search->next;
2070 /*-----------------------------------------------------------------*/
2071 /* cdbTypeInfo - print the type information for debugger */
2072 /*-----------------------------------------------------------------*/
2074 cdbTypeInfo (sym_link * type, FILE * of)
2076 fprintf (of, "{%d}", getSize (type));
2081 switch (DCL_TYPE (type))
2084 fprintf (of, "DF,");
2087 fprintf (of, "DG,");
2090 fprintf (of, "DC,");
2093 fprintf (of, "DX,");
2096 fprintf (of, "DD,");
2099 fprintf (of, "DI,");
2102 fprintf (of, "DP,");
2105 fprintf (of, "DA,");
2108 fprintf (of, "DA%d,", DCL_ELEM (type));
2116 switch (SPEC_NOUN (type))
2138 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2146 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2153 if (SPEC_USIGN (type))
2161 /*-----------------------------------------------------------------*/
2162 /* cdbSymbol - prints a symbol & its type information for debugger */
2163 /*-----------------------------------------------------------------*/
2165 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2177 fprintf (of, "S:"); /* symbol record */
2178 /* if this is not a structure symbol then
2179 we need to figure out the scope information */
2185 if (IS_STATIC (sym->etype))
2186 fprintf (of, "F%s$", moduleName); /* scope is file */
2188 fprintf (of, "G$"); /* scope is global */
2191 /* symbol is local */
2192 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2195 fprintf (of, "S$"); /* scope is structure */
2197 /* print the name, & mangled name */
2198 fprintf (of, "%s$%d$%d(", sym->name,
2199 sym->level, sym->block);
2201 cdbTypeInfo (sym->type, of);
2204 /* print the address space */
2205 map = SPEC_OCLS (sym->etype);
2206 fprintf (of, "%c,%d,%d",
2207 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2209 /* if assigned to registers then output register names */
2210 /* if this is a function then print
2211 if is it an interrupt routine & interrupt number
2212 and the register bank it is using */
2214 fprintf (of, ",%d,%d,%d", FUNC_ISISR (sym->type),
2215 FUNC_INTNO (sym->type), FUNC_REGBANK (sym->type));
2216 /* alternate location to find this symbol @ : eg registers
2223 /*-----------------------------------------------------------------*/
2224 /* cdbStruct - print a structure for debugger */
2225 /*-----------------------------------------------------------------*/
2227 cdbStruct (structdef * sdef, int block, FILE * of,
2228 int inStruct, char *tag)
2233 /* if block # then must have function scope */
2234 fprintf (of, "F%s$", moduleName);
2235 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2236 for (sym = sdef->fields; sym; sym = sym->next)
2238 fprintf (of, "({%d}", sym->offset);
2239 cdbSymbol (sym, of, TRUE, FALSE);
2247 /*------------------------------------------------------------------*/
2248 /* cdbStructBlock - calls struct printing for a blcks */
2249 /*------------------------------------------------------------------*/
2251 cdbStructBlock (int block, FILE * of)
2254 bucket **table = StructTab;
2258 /* go thru the entire table */
2259 for (i = 0; i < 256; i++)
2261 for (chain = table[i]; chain; chain = chain->next)
2263 if (chain->block >= block)
2265 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2271 /*-----------------------------------------------------------------*/
2272 /* powof2 - returns power of two for the number if number is pow 2 */
2273 /*-----------------------------------------------------------------*/
2275 powof2 (unsigned long num)
2288 if (n1s > 1 || nshifts == 0)
2304 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2305 symbol *__muldiv[3][3][2];
2306 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2307 sym_link *__multypes[3][2];
2308 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2309 symbol *__conv[2][3][2];
2310 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2311 symbol *__rlrr[2][3][2];
2313 sym_link *floatType;
2316 _mangleFunctionName(char *in)
2318 if (port->getMangledFunctionName)
2320 return port->getMangledFunctionName(in);
2328 /*-----------------------------------------------------------------*/
2329 /* initCSupport - create functions for C support routines */
2330 /*-----------------------------------------------------------------*/
2334 const char *smuldivmod[] =
2338 const char *sbwd[] =
2340 "char", "int", "long"
2346 const char *srlrr[] =
2351 int bwd, su, muldivmod, tofrom, rlrr;
2353 if (getenv("SDCC_NO_C_SUPPORT")) {
2354 /* for debugging only */
2358 floatType = newFloatLink ();
2360 for (bwd = 0; bwd < 3; bwd++)
2377 __multypes[bwd][0] = l;
2378 __multypes[bwd][1] = copyLinkChain (l);
2379 SPEC_USIGN (__multypes[bwd][1]) = 1;
2382 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2383 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2384 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2385 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2386 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2387 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2388 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2389 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2390 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2391 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2393 for (tofrom = 0; tofrom < 2; tofrom++)
2395 for (bwd = 0; bwd < 3; bwd++)
2397 for (su = 0; su < 2; su++)
2401 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2402 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2406 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2407 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2413 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2415 for (bwd = 0; bwd < 3; bwd++)
2417 for (su = 0; su < 2; su++)
2419 sprintf (buffer, "_%s%s%s",
2420 smuldivmod[muldivmod],
2423 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2424 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2429 for (rlrr = 0; rlrr < 2; rlrr++)
2431 for (bwd = 0; bwd < 3; bwd++)
2433 for (su = 0; su < 2; su++)
2435 sprintf (buffer, "_%s%s%s",
2439 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2440 FUNC_NONBANKED (__rlrr[rlrr][bwd][su]->type) = 1;