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) = port->unqualified_pointer;
377 /* the storage class of type ends here */
380 SPEC_VOLATILE (type) = 0;
383 /* now change all the remaining unknown pointers
384 to generic pointers */
387 if (!IS_SPEC (ptr) && DCL_TYPE (ptr) == UPOINTER)
388 DCL_TYPE (ptr) = port->unqualified_pointer;
392 /* same for the type although it is highly unlikely that
393 type will have a pointer */
396 if (!IS_SPEC (type) && DCL_TYPE (type) == UPOINTER)
397 DCL_TYPE (type) = port->unqualified_pointer;
403 /*------------------------------------------------------------------*/
404 /* addDecl - adds a declarator @ the end of a chain */
405 /*------------------------------------------------------------------*/
407 addDecl (symbol * sym, int type, sym_link * p)
413 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
414 fprintf (stderr, "SDCCsymt.c:addDecl(%s,%d,%p)\n", sym->name, type, p);
416 /* if we are passed a link then set head & tail */
425 head = tail = newLink ();
426 DCL_TYPE (head) = type;
429 /* if this is the first entry */
437 if (IS_SPEC (sym->etype) && IS_SPEC (head) && head == tail)
439 sym->etype = mergeSpec (sym->etype, head, sym->name);
443 if (IS_SPEC (sym->etype) && !IS_SPEC (head) && head == tail)
446 while (t->next != sym->etype)
449 tail->next = sym->etype;
453 sym->etype->next = head;
459 /* if the type is an unknown pointer and has
460 a tspec then take the storage class const & volatile
461 attribute from the tspec & make it those of this
465 //DCL_TYPE (p) == UPOINTER &&
468 if (!IS_SPEC (sym->etype))
470 sym->etype = sym->etype->next = newLink ();
471 sym->etype->class = SPECIFIER;
473 SPEC_SCLS (sym->etype) = SPEC_SCLS (DCL_TSPEC (p));
474 SPEC_CONST (sym->etype) = SPEC_CONST (DCL_TSPEC (p));
475 SPEC_VOLATILE (sym->etype) = SPEC_VOLATILE (DCL_TSPEC (p));
476 DCL_TSPEC (p) = NULL;
479 // if there is a function in this type chain
480 if (p && funcInChain(sym->type)) {
481 processFuncArgs (sym);
487 /*------------------------------------------------------------------
488 checkTypeSanity: prevent the user from doing e.g.:
490 ------------------------------------------------------------------*/
491 void checkTypeSanity(sym_link *etype, char *name) {
495 if (getenv("DEBUG_SANITY")) {
496 fprintf (stderr, "sanity check skipped for %s (etype==0)\n", name);
501 if (!IS_SPEC(etype)) {
502 if (getenv("DEBUG_SANITY")) {
503 fprintf (stderr, "sanity check skipped for %s (!IS_SPEC)\n", name);
508 noun=nounName(etype);
510 if (getenv("DEBUG_SANITY")) {
511 fprintf (stderr, "checking sanity for %s %x\n", name, (int)etype);
514 if ((SPEC_NOUN(etype)==V_CHAR ||
515 SPEC_NOUN(etype)==V_FLOAT ||
516 SPEC_NOUN(etype)==V_DOUBLE ||
517 SPEC_NOUN(etype)==V_VOID) &&
518 (etype->select.s._short || SPEC_LONG(etype))) {
519 // long or short for char float double or void
520 werror (E_LONG_OR_SHORT_INVALID, noun, name);
522 if ((SPEC_NOUN(etype)==V_FLOAT ||
523 SPEC_NOUN(etype)==V_DOUBLE ||
524 SPEC_NOUN(etype)==V_VOID) &&
525 (etype->select.s._signed || SPEC_USIGN(etype))) {
526 // signed or unsigned for float double or void
527 werror (E_SIGNED_OR_UNSIGNED_INVALID, noun, name);
530 // special case for "short"
531 if (etype->select.s._short) {
532 SPEC_NOUN(etype) = options.shortis8bits ? V_CHAR : V_INT;
533 etype->select.s._short = 0;
537 "const a;" or "data b;" or "signed s" or "long l"
539 if (!SPEC_NOUN(etype)) {
540 SPEC_NOUN(etype)=V_INT;
543 if (etype->select.s._signed && SPEC_USIGN(etype)) {
544 // signed AND unsigned
545 werror (E_SIGNED_AND_UNSIGNED_INVALID, noun, name);
547 if (etype->select.s._short && SPEC_LONG(etype)) {
549 werror (E_LONG_AND_SHORT_INVALID, noun, name);
554 /*------------------------------------------------------------------*/
555 /* mergeSpec - merges two specifiers and returns the new one */
556 /*------------------------------------------------------------------*/
558 mergeSpec (sym_link * dest, sym_link * src, char *name)
560 sym_link *symlink=dest;
562 if (!IS_SPEC(dest) || !IS_SPEC(src)) {
564 werror (E_INTERNAL_ERROR, __FILE__, __LINE__, "cannot merge declarator");
567 werror (E_SYNTAX_ERROR, yytext);
568 // the show must go on
573 if (SPEC_NOUN(src)) {
574 if (!SPEC_NOUN(dest)) {
575 SPEC_NOUN(dest)=SPEC_NOUN(src);
577 /* we shouldn't redeclare the type */
578 if (getenv("DEBUG_SANITY")) {
579 fprintf (stderr, "mergeSpec: ");
581 werror(E_TWO_OR_MORE_DATA_TYPES, name);
585 if (SPEC_SCLS(src)) {
586 /* if destination has no storage class */
587 if (!SPEC_SCLS (dest) || SPEC_SCLS(dest)==S_REGISTER) {
588 SPEC_SCLS (dest) = SPEC_SCLS (src);
590 if (getenv("DEBUG_SANITY")) {
591 fprintf (stderr, "mergeSpec: ");
593 werror(E_TWO_OR_MORE_STORAGE_CLASSES, name);
597 /* copy all the specifications */
599 // we really should do:
601 if (SPEC_what(src)) {
602 if (SPEC_what(dest)) {
603 werror(W_DUPLICATE_SPEC, "what");
605 SPEC_what(dst)|=SPEC_what(src);
608 // but there are more important thing right now
610 SPEC_LONG (dest) |= SPEC_LONG (src);
611 dest->select.s._short|=src->select.s._short;
612 SPEC_USIGN (dest) |= SPEC_USIGN (src);
613 dest->select.s._signed|=src->select.s._signed;
614 SPEC_STAT (dest) |= SPEC_STAT (src);
615 SPEC_EXTR (dest) |= SPEC_EXTR (src);
616 SPEC_CONST(dest) |= SPEC_CONST (src);
617 SPEC_ABSA (dest) |= SPEC_ABSA (src);
618 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
619 SPEC_ADDR (dest) |= SPEC_ADDR (src);
620 SPEC_OCLS (dest) = SPEC_OCLS (src);
621 SPEC_BLEN (dest) |= SPEC_BLEN (src);
622 SPEC_BSTR (dest) |= SPEC_BSTR (src);
623 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
624 SPEC_ENUM (dest) |= SPEC_ENUM (src);
626 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
627 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
629 /* these are the only function attributes that will be set
630 in a specifier while parsing */
631 FUNC_NONBANKED(dest) |= FUNC_NONBANKED(src);
632 FUNC_BANKED(dest) |= FUNC_BANKED(src);
633 FUNC_ISCRITICAL(dest) |= FUNC_ISCRITICAL(src);
634 FUNC_ISREENT(dest) |= FUNC_ISREENT(src);
635 FUNC_ISNAKED(dest) |= FUNC_ISNAKED(src);
636 FUNC_ISISR(dest) |= FUNC_ISISR(src);
637 FUNC_ISJAVANATIVE(dest) |= FUNC_ISJAVANATIVE(src);
638 FUNC_ISBUILTIN(dest) |= FUNC_ISBUILTIN(src);
639 FUNC_ISOVERLAY(dest) |= FUNC_ISOVERLAY(src);
640 FUNC_INTNO(dest) |= FUNC_INTNO(src);
641 FUNC_REGBANK(dest) |= FUNC_REGBANK(src);
646 /*------------------------------------------------------------------*/
647 /* cloneSpec - copies the entire spec and returns a new spec */
648 /*------------------------------------------------------------------*/
650 cloneSpec (sym_link * src)
654 /* go thru chain till we find the specifier */
655 while (src && src->class != SPECIFIER)
659 memcpy (spec, src, sizeof (sym_link));
663 /*------------------------------------------------------------------*/
664 /* genSymName - generates and returns a name used for anonymous vars */
665 /*------------------------------------------------------------------*/
667 genSymName (int level)
669 static int gCount = 0;
670 static char gname[SDCC_NAME_MAX + 1];
672 sprintf (gname, "__%04d%04d", level, gCount++);
676 /*------------------------------------------------------------------*/
677 /* getSpec - returns the specifier part from a declaration chain */
678 /*------------------------------------------------------------------*/
680 getSpec (sym_link * p)
685 while (p && !(IS_SPEC (p)))
691 /*------------------------------------------------------------------*/
692 /* newCharLink() - creates an char type */
693 /*------------------------------------------------------------------*/
700 p->class = SPECIFIER;
701 SPEC_NOUN (p) = V_CHAR;
706 /*------------------------------------------------------------------*/
707 /* newFloatLink - a new Float type */
708 /*------------------------------------------------------------------*/
715 p->class = SPECIFIER;
716 SPEC_NOUN (p) = V_FLOAT;
721 /*------------------------------------------------------------------*/
722 /* newLongLink() - new long type */
723 /*------------------------------------------------------------------*/
730 p->class = SPECIFIER;
731 SPEC_NOUN (p) = V_INT;
737 /*------------------------------------------------------------------*/
738 /* newIntLink() - creates an int type */
739 /*------------------------------------------------------------------*/
746 p->class = SPECIFIER;
747 SPEC_NOUN (p) = V_INT;
752 /*------------------------------------------------------------------*/
753 /* getSize - returns size of a type chain in bits */
754 /*------------------------------------------------------------------*/
756 getSize (sym_link * p)
758 /* if nothing return 0 */
762 { /* if this is the specifier then */
763 switch (SPEC_NOUN (p))
764 { /* depending on the specifier type */
766 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
774 return SPEC_STRUCT (p)->size;
780 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
786 /* this is a specifier */
787 switch (DCL_TYPE (p))
791 return DCL_ELEM (p) * getSize (p->next);
793 werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
794 "can not tell the size of an array[]");
814 /*------------------------------------------------------------------*/
815 /* bitsForType - returns # of bits required to store this type */
816 /*------------------------------------------------------------------*/
818 bitsForType (sym_link * p)
820 /* if nothing return 0 */
825 { /* if this is the specifier then */
827 switch (SPEC_NOUN (p))
828 { /* depending on the specifier type */
830 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
832 return FLOATSIZE * 8;
838 return SPEC_STRUCT (p)->size * 8;
844 return SPEC_BLEN (p);
850 /* this is a specifier */
851 switch (DCL_TYPE (p))
854 return DCL_ELEM (p) * getSize (p->next) * 8;
858 return (PTRSIZE * 8);
863 return (FPTRSIZE * 8);
865 return (GPTRSIZE * 8);
872 /*------------------------------------------------------------------*/
873 /* copySymbolChain - copies a symbol chain */
874 /*------------------------------------------------------------------*/
876 copySymbolChain (symbol * src)
883 dest = copySymbol (src);
884 dest->next = copySymbolChain (src->next);
888 /*------------------------------------------------------------------*/
889 /* copySymbol - makes a copy of a symbol */
890 /*------------------------------------------------------------------*/
892 copySymbol (symbol * src)
899 dest = newSymbol (src->name, src->level);
900 memcpy (dest, src, sizeof (symbol));
901 dest->level = src->level;
902 dest->block = src->block;
903 dest->ival = copyIlist (src->ival);
904 dest->type = copyLinkChain (src->type);
905 dest->etype = getSpec (dest->type);
907 dest->key = src->key;
908 dest->allocreq = src->allocreq;
912 /*------------------------------------------------------------------*/
913 /* reverseSyms - reverses the links for a symbol chain */
914 /*------------------------------------------------------------------*/
916 reverseSyms (symbol * sym)
918 symbol *prev, *curr, *next;
933 sym->next = (void *) NULL;
937 /*------------------------------------------------------------------*/
938 /* reverseLink - reverses the links for a type chain */
939 /*------------------------------------------------------------------*/
941 reverseLink (sym_link * type)
943 sym_link *prev, *curr, *next;
958 type->next = (void *) NULL;
962 /*------------------------------------------------------------------*/
963 /* addSymChain - adds a symbol chain to the symboltable */
964 /*------------------------------------------------------------------*/
966 addSymChain (symbol * symHead)
968 symbol *sym = symHead;
971 for (; sym != NULL; sym = sym->next)
974 checkTypeSanity(sym->etype, sym->name);
976 /* if already exists in the symbol table then check if
977 one of them is an extern definition if yes then
978 then check if the type match, if the types match then
979 delete the current entry and add the new entry */
980 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
981 csym->level == sym->level) {
983 /* one definition extern ? */
984 if (IS_EXTERN (csym->etype) || IS_EXTERN (sym->etype)) {
985 /* do types match ? */
986 if (compareType (csym->type, sym->type) != 1) {
988 werror (E_EXTERN_MISMATCH, csym->name);
991 /* delete current entry */
992 deleteSym (SymbolTab, csym, csym->name);
995 werror (E_DUPLICATE, sym->name);
1001 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1006 /*------------------------------------------------------------------*/
1007 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
1008 /*------------------------------------------------------------------*/
1010 funcInChain (sym_link * lnk)
1021 /*------------------------------------------------------------------*/
1022 /* structElemType - returns the type info of a sturct member */
1023 /*------------------------------------------------------------------*/
1025 structElemType (sym_link * stype, value * id)
1027 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
1028 sym_link *type, *etype;
1029 sym_link *petype = getSpec (stype);
1034 /* look for the id */
1037 if (strcmp (fields->rname, id->name) == 0)
1039 type = copyLinkChain (fields->type);
1040 etype = getSpec (type);
1041 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1042 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1045 fields = fields->next;
1047 werror (E_NOT_MEMBER, id->name);
1052 /*------------------------------------------------------------------*/
1053 /* getStructElement - returns element of a tructure definition */
1054 /*------------------------------------------------------------------*/
1056 getStructElement (structdef * sdef, symbol * sym)
1060 for (field = sdef->fields; field; field = field->next)
1061 if (strcmp (field->name, sym->name) == 0)
1064 werror (E_NOT_MEMBER, sym->name);
1066 return sdef->fields;
1069 /*------------------------------------------------------------------*/
1070 /* compStructSize - computes the size of a structure */
1071 /*------------------------------------------------------------------*/
1073 compStructSize (int su, structdef * sdef)
1075 int sum = 0, usum = 0;
1079 /* for the identifiers */
1080 loop = sdef->fields;
1083 /* create the internal name for this variable */
1084 sprintf (loop->rname, "_%s", loop->name);
1085 loop->offset = (su == UNION ? sum = 0 : sum);
1086 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1088 /* if this is a bit field */
1091 /* change it to a unsigned bit */
1092 SPEC_NOUN (loop->etype) = V_BIT;
1093 SPEC_USIGN (loop->etype) = 1;
1094 /* check if this fit into the remaining */
1095 /* bits of this byte else align it to the */
1096 /* next byte boundary */
1097 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1098 SPEC_BSTR (loop->etype) = bitOffset;
1099 if ((bitOffset += (loop->bitVar % 8)) == 8)
1102 else /* does not fit */ {
1104 SPEC_BSTR (loop->etype) = bitOffset;
1105 sum += (loop->bitVar / 8);
1106 bitOffset += (loop->bitVar % 8);
1108 /* if this is the last field then pad */
1109 if (!loop->next && bitOffset && bitOffset != 8) {
1115 checkDecl (loop, 1);
1116 sum += getSize (loop->type);
1119 #if 0 // jwk: this is done now in addDecl()
1120 /* if function then do the arguments for it */
1121 if (funcInChain (loop->type)) {
1122 processFuncArgs (loop);
1128 /* if this is not a bitfield but the */
1129 /* previous one was and did not take */
1130 /* the whole byte then pad the rest */
1131 if ((loop && !loop->bitVar) && bitOffset) {
1136 /* if union then size = sizeof larget field */
1138 usum = max (usum, sum);
1142 return (su == UNION ? usum : sum);
1145 /*------------------------------------------------------------------*/
1146 /* checkSClass - check the storage class specification */
1147 /*------------------------------------------------------------------*/
1149 checkSClass (symbol * sym, int isProto)
1151 if (getenv("DEBUG_SANITY")) {
1152 fprintf (stderr, "checkSClass: %s \n", sym->name);
1155 /* type is literal can happen foe enums change
1157 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1158 SPEC_SCLS (sym->etype) = S_AUTO;
1160 /* if sfr or sbit then must also be */
1161 /* volatile the initial value will be xlated */
1162 /* to an absolute address */
1163 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1164 SPEC_SCLS (sym->etype) == S_SFR)
1166 SPEC_VOLATILE (sym->etype) = 1;
1167 /* if initial value given */
1170 SPEC_ABSA (sym->etype) = 1;
1171 SPEC_ADDR (sym->etype) =
1172 (int) list2int (sym->ival);
1177 /* if absolute address given then it mark it as
1179 if (IS_ABSOLUTE (sym->etype))
1180 SPEC_VOLATILE (sym->etype) = 1;
1182 /* global variables declared const put into code */
1183 if (sym->level == 0 &&
1184 SPEC_CONST (sym->etype)) {
1185 SPEC_SCLS (sym->etype) = S_CODE;
1188 /* global variable in code space is a constant */
1189 if (sym->level == 0 &&
1190 SPEC_SCLS (sym->etype) == S_CODE &&
1192 SPEC_CONST (sym->etype) = 1;
1195 /* if bit variable then no storage class can be */
1196 /* specified since bit is already a storage */
1197 if (IS_BITVAR (sym->etype) &&
1198 (SPEC_SCLS (sym->etype) != S_FIXED &&
1199 SPEC_SCLS (sym->etype) != S_SBIT &&
1200 SPEC_SCLS (sym->etype) != S_BIT)
1203 werror (E_BITVAR_STORAGE, sym->name);
1204 SPEC_SCLS (sym->etype) = S_FIXED;
1207 /* extern variables cannot be initialized */
1208 if (IS_EXTERN (sym->etype) && sym->ival)
1210 werror (E_EXTERN_INIT, sym->name);
1214 /* if this is an atomatic symbol */
1215 if (sym->level && (options.stackAuto || reentrant)) {
1216 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1217 SPEC_SCLS (sym->etype) == S_FIXED ||
1218 SPEC_SCLS (sym->etype) == S_REGISTER ||
1219 SPEC_SCLS (sym->etype) == S_STACK ||
1220 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1221 SPEC_SCLS (sym->etype) = S_AUTO;
1223 /* storage class may only be specified for statics */
1224 if (!IS_STATIC(sym->etype)) {
1225 werror (E_AUTO_ASSUMED, sym->name);
1230 /* automatic symbols cannot be given */
1231 /* an absolute address ignore it */
1233 SPEC_ABSA (sym->etype) &&
1234 (options.stackAuto || reentrant))
1236 werror (E_AUTO_ABSA, sym->name);
1237 SPEC_ABSA (sym->etype) = 0;
1240 /* arrays & pointers cannot be defined for bits */
1241 /* SBITS or SFRs or BIT */
1242 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1243 (SPEC_NOUN (sym->etype) == V_BIT ||
1244 SPEC_NOUN (sym->etype) == V_SBIT ||
1245 SPEC_SCLS (sym->etype) == S_SFR))
1246 werror (E_BIT_ARRAY, sym->name);
1248 /* if this is a bit|sbit then set length & start */
1249 if (SPEC_NOUN (sym->etype) == V_BIT ||
1250 SPEC_NOUN (sym->etype) == V_SBIT)
1252 SPEC_BLEN (sym->etype) = 1;
1253 SPEC_BSTR (sym->etype) = 0;
1257 /* variables declared in CODE space must have */
1258 /* initializers if not an extern */
1259 if (SPEC_SCLS (sym->etype) == S_CODE &&
1260 sym->ival == NULL &&
1262 port->mem.code_ro &&
1263 !IS_EXTERN (sym->etype) &&
1264 !funcInChain (sym->type))
1265 werror (E_CODE_NO_INIT, sym->name);
1268 /* if parameter or local variable then change */
1269 /* the storage class to reflect where the var will go */
1270 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1271 !IS_STATIC(sym->etype))
1273 if (options.stackAuto || (currFunc && IFFUNC_ISREENT (currFunc->type)))
1275 SPEC_SCLS (sym->etype) = (options.useXstack ?
1276 S_XSTACK : S_STACK);
1280 /* hack-o-matic! I see no reason why the useXstack option should ever
1281 * control this allcoation, but the code was originally that way, and
1282 * changing it for non-390 ports breaks the compiler badly.
1284 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1285 SPEC_SCLS (sym->etype) = (useXdata ?
1291 /*------------------------------------------------------------------*/
1292 /* changePointer - change pointer to functions */
1293 /*------------------------------------------------------------------*/
1295 changePointer (symbol * sym)
1299 /* go thru the chain of declarations */
1300 /* if we find a pointer to a function */
1301 /* unconditionally change it to a ptr */
1303 for (p = sym->type; p; p = p->next)
1305 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1306 DCL_TYPE (p) = port->unqualified_pointer;
1307 if (IS_PTR (p) && IS_FUNC (p->next))
1308 DCL_TYPE (p) = CPOINTER;
1312 /*------------------------------------------------------------------*/
1313 /* checkDecl - does semantic validation of a declaration */
1314 /*------------------------------------------------------------------*/
1316 checkDecl (symbol * sym, int isProto)
1319 checkSClass (sym, isProto); /* check the storage class */
1320 changePointer (sym); /* change pointers if required */
1322 /* if this is an array without any dimension
1323 then update the dimension from the initial value */
1324 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1325 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1330 /*------------------------------------------------------------------*/
1331 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1332 /*------------------------------------------------------------------*/
1334 copyLinkChain (sym_link * p)
1336 sym_link *head, *curr, *loop;
1339 head = loop = (curr ? newLink () : (void *) NULL);
1342 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1343 loop->next = (curr->next ? newLink () : (void *) NULL);
1352 /*------------------------------------------------------------------*/
1353 /* cleanUpBlock - cleansup the symbol table specified for all the */
1354 /* symbols in the given block */
1355 /*------------------------------------------------------------------*/
1357 cleanUpBlock (bucket ** table, int block)
1362 /* go thru the entire table */
1363 for (i = 0; i < 256; i++)
1365 for (chain = table[i]; chain; chain = chain->next)
1367 if (chain->block >= block)
1369 deleteSym (table, chain->sym, chain->name);
1375 /*------------------------------------------------------------------*/
1376 /* cleanUpLevel - cleansup the symbol table specified for all the */
1377 /* symbols in the given level */
1378 /*------------------------------------------------------------------*/
1380 cleanUpLevel (bucket ** table, int level)
1385 /* go thru the entire table */
1386 for (i = 0; i < 256; i++)
1388 for (chain = table[i]; chain; chain = chain->next)
1390 if (chain->level >= level)
1392 deleteSym (table, chain->sym, chain->name);
1398 /*------------------------------------------------------------------*/
1399 /* computeType - computes the resultant type from two types */
1400 /*------------------------------------------------------------------*/
1402 computeType (sym_link * type1, sym_link * type2)
1406 sym_link *etype1 = getSpec (type1);
1407 sym_link *etype2 = getSpec (type2);
1409 /* if one of them is a float then result is a float */
1410 /* here we assume that the types passed are okay */
1411 /* and can be cast to one another */
1412 /* which ever is greater in size */
1413 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1414 rType = newFloatLink ();
1416 /* if only one of them is a bit variable
1417 then the other one prevails */
1418 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1419 rType = copyLinkChain (type2);
1420 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1421 rType = copyLinkChain (type1);
1423 /* if one of them is a pointer or array then that
1425 if (IS_PTR (type1) || IS_ARRAY (type1))
1426 rType = copyLinkChain (type1);
1427 else if (IS_PTR (type2) || IS_ARRAY (type2))
1428 rType = copyLinkChain (type2);
1429 else if (getSize (type1) > getSize (type2))
1430 rType = copyLinkChain (type1);
1432 rType = copyLinkChain (type2);
1434 reType = getSpec (rType);
1436 /* if either of them unsigned but not val then make this unsigned */
1437 if (((!IS_LITERAL(type1) && SPEC_USIGN (etype1)) ||
1438 (!IS_LITERAL(type2) && SPEC_USIGN (etype2))) &&
1440 SPEC_USIGN (reType) = 1;
1442 SPEC_USIGN (reType) = 0;
1444 /* if result is a literal then make not so */
1445 if (IS_LITERAL (reType))
1446 SPEC_SCLS (reType) = S_REGISTER;
1451 /*--------------------------------------------------------------------*/
1452 /* compareType - will do type check return 1 if match, -1 if castable */
1453 /*--------------------------------------------------------------------*/
1455 compareType (sym_link * dest, sym_link * src)
1466 /* if dest is a declarator then */
1471 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1473 //checkFunction(src,dest);
1475 return compareType (dest->next, src->next);
1477 if (IS_PTR (src) && IS_GENPTR (dest))
1479 if (IS_PTR (dest) && IS_ARRAY (src)) {
1480 value *val=aggregateToPointer (valFromType(src));
1481 int res=compareType (dest, val->type);
1482 Safe_free(val->type);
1484 //return res ? -1 : 0;
1487 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1488 return compareType (dest->next, src);
1491 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1497 /* if one is a specifier and the other is not */
1498 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1499 (IS_SPEC (dest) && !IS_SPEC (src)))
1502 /* if one of them is a void then ok */
1503 if (SPEC_NOUN (dest) == V_VOID &&
1504 SPEC_NOUN (src) != V_VOID)
1507 if (SPEC_NOUN (dest) != V_VOID &&
1508 SPEC_NOUN (src) == V_VOID)
1511 /* if they are both bitfields then if the lengths
1512 and starts don't match */
1513 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1514 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1515 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1518 /* it is a specifier */
1519 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1521 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1522 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1523 getSize (dest) == getSize (src))
1525 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1530 else if (IS_STRUCT (dest))
1532 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1537 if (SPEC_LONG (dest) != SPEC_LONG (src))
1540 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1546 /*------------------------------------------------------------------*/
1547 /* inCalleeSaveList - return 1 if found in callee save list */
1548 /*------------------------------------------------------------------*/
1550 inCalleeSaveList (char *s)
1554 if (options.all_callee_saves) return 1;
1555 for (i = 0; options.calleeSaves[i]; i++)
1556 if (strcmp (options.calleeSaves[i], s) == 0)
1562 /*-----------------------------------------------------------------*/
1563 /* aggregateToPointer: change an agggregate type function */
1564 /* argument to a pointer to that type. */
1565 /*-----------------------------------------------------------------*/
1567 aggregateToPointer (value * val)
1569 if (IS_AGGREGATE (val->type))
1571 /* if this is a structure */
1572 /* then we need to add a new link */
1573 if (IS_STRUCT (val->type))
1575 /* first lets add DECLARATOR type */
1576 sym_link *p = val->type;
1578 werror (W_STRUCT_AS_ARG, val->name);
1579 val->type = newLink ();
1580 val->type->next = p;
1583 /* change to a pointer depending on the */
1584 /* storage class specified */
1585 switch (SPEC_SCLS (val->etype))
1588 DCL_TYPE (val->type) = IPOINTER;
1591 DCL_TYPE (val->type) = PPOINTER;
1594 if (SPEC_OCLS(val->etype)) {
1595 DCL_TYPE(val->type)=PTR_TYPE(SPEC_OCLS(val->etype));
1598 // this happens for (external) function parameters
1599 DCL_TYPE (val->type) = port->unqualified_pointer;
1601 if (TARGET_IS_DS390) {
1602 /* The AUTO and REGISTER classes should probably
1603 * also become generic pointers, but I haven't yet
1604 * devised a test case for that.
1606 DCL_TYPE (val->type) = port->unqualified_pointer;
1609 if (options.model==MODEL_LARGE) {
1610 DCL_TYPE (val->type) = FPOINTER;
1619 DCL_TYPE (val->type) = POINTER;
1622 DCL_TYPE (val->type) = CPOINTER;
1625 DCL_TYPE (val->type) = FPOINTER;
1628 DCL_TYPE (val->type) = EEPPOINTER;
1631 DCL_TYPE (val->type) = port->unqualified_pointer;
1634 /* is there is a symbol associated then */
1635 /* change the type of the symbol as well */
1638 val->sym->type = copyLinkChain (val->type);
1639 val->sym->etype = getSpec (val->sym->type);
1644 /*------------------------------------------------------------------*/
1645 /* checkFunction - does all kinds of check on a function */
1646 /*------------------------------------------------------------------*/
1648 checkFunction (symbol * sym, symbol *csym)
1650 value *exargs, *acargs;
1654 if (getenv("DEBUG_SANITY")) {
1655 fprintf (stderr, "checkFunction: %s ", sym->name);
1658 /* make sure the type is complete and sane */
1659 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1661 /* if not type then some kind of error */
1665 /* if the function has no type then make it return int */
1666 if (!sym->type->next)
1667 sym->type->next = sym->etype = newIntLink ();
1669 /* function cannot return aggregate */
1670 if (IS_AGGREGATE (sym->type->next))
1672 werror (E_FUNC_AGGR, sym->name);
1676 /* function cannot return bit */
1677 if (IS_BITVAR (sym->type->next))
1679 werror (E_FUNC_BIT, sym->name);
1683 /* check if this function is defined as calleeSaves
1684 then mark it as such */
1685 FUNC_CALLEESAVES(sym->type) = inCalleeSaveList (sym->name);
1687 /* if interrupt service routine */
1688 /* then it cannot have arguments */
1689 if (IFFUNC_ARGS(sym->type) && FUNC_ISISR (sym->type))
1691 if (!IS_VOID(FUNC_ARGS(sym->type)->type)) {
1692 werror (E_INT_ARGS, sym->name);
1693 FUNC_ARGS(sym->type)=NULL;
1697 if (!csym && !(csym = findSym (SymbolTab, sym, sym->name)))
1698 return 1; /* not defined nothing more to check */
1700 /* check if body already present */
1701 if (csym && IFFUNC_HASBODY(csym->type))
1703 werror (E_FUNC_BODY, sym->name);
1707 /* check the return value type */
1708 if (compareType (csym->type, sym->type) <= 0)
1710 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1711 printFromToType(csym->type, sym->type);
1715 if (FUNC_ISISR (csym->type) != FUNC_ISISR (sym->type))
1717 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1720 if (FUNC_REGBANK (csym->type) != FUNC_REGBANK (sym->type))
1722 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1725 if (IFFUNC_ISNAKED (csym->type) != IFFUNC_ISNAKED (sym->type))
1727 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1730 /* compare expected args with actual args */
1731 exargs = FUNC_ARGS(csym->type);
1732 acargs = FUNC_ARGS(sym->type);
1734 /* for all the expected args do */
1737 exargs = exargs->next, acargs = acargs->next, argCnt++)
1739 if (getenv("DEBUG_SANITY")) {
1740 fprintf (stderr, "checkFunction: %s ", exargs->name);
1742 /* make sure the type is complete and sane */
1743 checkTypeSanity(exargs->etype, exargs->name);
1745 /* If the actual argument is an array, any prototype
1746 * will have modified it to a pointer. Duplicate that
1749 if (IS_AGGREGATE (acargs->type))
1751 checkValue = copyValue (acargs);
1752 aggregateToPointer (checkValue);
1756 checkValue = acargs;
1759 if (compareType (exargs->type, checkValue->type) <= 0)
1761 werror (E_ARG_TYPE, argCnt);
1762 printFromToType(exargs->type, checkValue->type);
1767 /* if one them ended we have a problem */
1768 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1769 (!exargs && acargs && !IS_VOID (acargs->type)))
1770 werror (E_ARG_COUNT);
1772 /* replace with this defition */
1773 sym->cdef = csym->cdef;
1774 deleteSym (SymbolTab, csym, csym->name);
1775 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1776 if (IS_EXTERN (csym->etype) && !
1777 IS_EXTERN (sym->etype))
1779 addSet (&publics, sym);
1784 /*-----------------------------------------------------------------*/
1785 /* processFuncArgs - does some processing with function args */
1786 /*-----------------------------------------------------------------*/
1788 processFuncArgs (symbol * func)
1792 sym_link *funcType=func->type;
1794 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
1795 fprintf (stderr, "SDCCsymt.c:processFuncArgs(%s)\n", func->name);
1797 // if this is a pointer to a function
1798 if (IS_PTR(funcType)) {
1799 funcType=funcType->next;
1802 /* if this function has variable argument list */
1803 /* then make the function a reentrant one */
1804 if (IFFUNC_HASVARARGS(funcType))
1805 FUNC_ISREENT(funcType)=1;
1807 /* check if this function is defined as calleeSaves
1808 then mark it as such */
1809 FUNC_CALLEESAVES(funcType) = inCalleeSaveList (func->name);
1811 /* loop thru all the arguments */
1812 val = FUNC_ARGS(funcType);
1814 /* if it is void then remove parameters */
1815 if (val && IS_VOID (val->type))
1817 FUNC_ARGS(funcType) = NULL;
1821 /* reset regparm for the port */
1822 (*port->reset_regparms) ();
1823 /* if any of the arguments is an aggregate */
1824 /* change it to pointer to the same type */
1827 /* mark it as a register parameter if
1828 the function does not have VA_ARG
1829 and as port dictates */
1830 if (!IFFUNC_HASVARARGS(funcType) &&
1831 (*port->reg_parm) (val->type))
1833 SPEC_REGPARM (val->etype) = 1;
1836 if (IS_AGGREGATE (val->type))
1838 aggregateToPointer (val);
1845 /* if this is an internal generated function call */
1847 /* ignore --stack-auto for this one, we don't know how it is compiled */
1848 /* simply trust on --int-long-reent or --float-reent */
1849 if (IFFUNC_ISREENT(funcType)) {
1853 /* if this function is reentrant or */
1854 /* automatics r 2b stacked then nothing */
1855 if (IFFUNC_ISREENT (funcType) || options.stackAuto)
1859 val = FUNC_ARGS(funcType);
1864 /* if a symbolname is not given */
1865 /* synthesize a variable name */
1869 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1870 val->sym = newSymbol (val->name, 1);
1871 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1872 val->sym->type = copyLinkChain (val->type);
1873 val->sym->etype = getSpec (val->sym->type);
1874 val->sym->_isparm = 1;
1875 strcpy (val->sym->rname, val->name);
1876 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1877 SPEC_STAT (func->etype);
1878 addSymChain (val->sym);
1881 else /* symbol name given create synth name */
1884 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1885 strcpy (val->sym->rname, val->name);
1886 val->sym->_isparm = 1;
1887 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1888 (options.model != MODEL_SMALL ? xdata : data);
1889 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1890 SPEC_STAT (func->etype);
1896 /*-----------------------------------------------------------------*/
1897 /* isSymbolEqual - compares two symbols return 1 if they match */
1898 /*-----------------------------------------------------------------*/
1900 isSymbolEqual (symbol * dest, symbol * src)
1902 /* if pointers match then equal */
1906 /* if one of them is null then don't match */
1910 /* if both of them have rname match on rname */
1911 if (dest->rname[0] && src->rname[0])
1912 return (!strcmp (dest->rname, src->rname));
1914 /* otherwise match on name */
1915 return (!strcmp (dest->name, src->name));
1918 void PT(sym_link *type)
1920 printTypeChain(type,0);
1922 /*-----------------------------------------------------------------*/
1923 /* printTypeChain - prints the type chain in human readable form */
1924 /*-----------------------------------------------------------------*/
1926 printTypeChain (sym_link * start, FILE * of)
1929 sym_link * type, * search;
1938 fprintf (of, "void");
1942 /* print the chain as it is written in the source: */
1943 /* start with the last entry */
1944 for (type = start; type && type->next; type = type->next)
1950 if (DCL_PTR_VOLATILE (type)) {
1951 fprintf (of, "volatile ");
1953 switch (DCL_TYPE (type))
1956 fprintf (of, "function %s", (IFFUNC_ISBUILTIN(type) ? "__builtin__" : " "));
1959 if (DCL_PTR_CONST (type))
1960 fprintf (of, "const ");
1961 fprintf (of, "generic * ");
1964 if (DCL_PTR_CONST (type))
1965 fprintf (of, "const ");
1966 fprintf (of, "code * ");
1969 if (DCL_PTR_CONST (type))
1970 fprintf (of, "const ");
1971 fprintf (of, "xdata * ");
1974 if (DCL_PTR_CONST (type))
1975 fprintf (of, "const ");
1976 fprintf (of, "eeprom * ");
1980 if (DCL_PTR_CONST (type))
1981 fprintf (of, "const ");
1982 fprintf (of, "near *");
1985 if (DCL_PTR_CONST (type))
1986 fprintf (of, "const ");
1987 fprintf (of, "idata * ");
1990 if (DCL_PTR_CONST (type))
1991 fprintf (of, "const ");
1992 fprintf (of, "pdata * ");
1995 if (DCL_PTR_CONST (type))
1996 fprintf (of, "const ");
1997 fprintf (of, "unkown * ");
2000 fprintf (of, "[] ");
2006 switch (SPEC_SCLS(type))
2008 case S_DATA: fprintf (of, "data "); break;
2009 case S_XDATA: fprintf (of, "xdata "); break;
2010 case S_SFR: fprintf (of, "sfr "); break;
2011 case S_SBIT: fprintf (of, "sbit "); break;
2012 case S_CODE: fprintf (of, "code "); break;
2013 case S_IDATA: fprintf (of, "idata "); break;
2014 case S_PDATA: fprintf (of, "pdata "); break;
2015 case S_LITERAL: fprintf (of, "literal "); break;
2016 case S_STACK: fprintf (of, "stack "); break;
2017 case S_XSTACK: fprintf (of, "xstack "); break;
2018 case S_BIT: fprintf (of, "bit "); break;
2019 case S_EEPROM: fprintf (of, "eeprom "); break;
2023 if (SPEC_VOLATILE (type))
2024 fprintf (of, "volatile ");
2025 if (SPEC_USIGN (type))
2026 fprintf (of, "unsigned ");
2027 if (SPEC_CONST (type))
2028 fprintf (of, "const ");
2030 switch (SPEC_NOUN (type))
2034 fprintf (of, "long ");
2035 fprintf (of, "int");
2039 fprintf (of, "char");
2043 fprintf (of, "void");
2047 fprintf (of, "float");
2051 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2055 fprintf (of, "sbit");
2059 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2063 fprintf (of, "double");
2067 fprintf (of, "unknown type");
2071 /* search entry in list before "type" */
2072 for (search = start; search && search->next != type;)
2073 search = search->next;
2082 /*-----------------------------------------------------------------*/
2083 /* cdbTypeInfo - print the type information for debugger */
2084 /*-----------------------------------------------------------------*/
2086 cdbTypeInfo (sym_link * type, FILE * of)
2088 fprintf (of, "{%d}", getSize (type));
2093 switch (DCL_TYPE (type))
2096 fprintf (of, "DF,");
2099 fprintf (of, "DG,");
2102 fprintf (of, "DC,");
2105 fprintf (of, "DX,");
2108 fprintf (of, "DD,");
2111 fprintf (of, "DI,");
2114 fprintf (of, "DP,");
2117 fprintf (of, "DA,");
2120 fprintf (of, "DA%d,", DCL_ELEM (type));
2128 switch (SPEC_NOUN (type))
2150 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2158 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2165 if (SPEC_USIGN (type))
2173 /*-----------------------------------------------------------------*/
2174 /* cdbSymbol - prints a symbol & its type information for debugger */
2175 /*-----------------------------------------------------------------*/
2177 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2189 fprintf (of, "S:"); /* symbol record */
2190 /* if this is not a structure symbol then
2191 we need to figure out the scope information */
2197 if (IS_STATIC (sym->etype))
2198 fprintf (of, "F%s$", moduleName); /* scope is file */
2200 fprintf (of, "G$"); /* scope is global */
2203 /* symbol is local */
2204 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2207 fprintf (of, "S$"); /* scope is structure */
2209 /* print the name, & mangled name */
2210 fprintf (of, "%s$%d$%d(", sym->name,
2211 sym->level, sym->block);
2213 cdbTypeInfo (sym->type, of);
2216 /* print the address space */
2217 map = SPEC_OCLS (sym->etype);
2218 fprintf (of, "%c,%d,%d",
2219 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2221 /* if assigned to registers then output register names */
2222 /* if this is a function then print
2223 if is it an interrupt routine & interrupt number
2224 and the register bank it is using */
2226 fprintf (of, ",%d,%d,%d", FUNC_ISISR (sym->type),
2227 FUNC_INTNO (sym->type), FUNC_REGBANK (sym->type));
2228 /* alternate location to find this symbol @ : eg registers
2235 /*-----------------------------------------------------------------*/
2236 /* cdbStruct - print a structure for debugger */
2237 /*-----------------------------------------------------------------*/
2239 cdbStruct (structdef * sdef, int block, FILE * of,
2240 int inStruct, char *tag)
2245 /* if block # then must have function scope */
2246 fprintf (of, "F%s$", moduleName);
2247 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2248 for (sym = sdef->fields; sym; sym = sym->next)
2250 fprintf (of, "({%d}", sym->offset);
2251 cdbSymbol (sym, of, TRUE, FALSE);
2259 /*------------------------------------------------------------------*/
2260 /* cdbStructBlock - calls struct printing for a blcks */
2261 /*------------------------------------------------------------------*/
2263 cdbStructBlock (int block, FILE * of)
2266 bucket **table = StructTab;
2270 /* go thru the entire table */
2271 for (i = 0; i < 256; i++)
2273 for (chain = table[i]; chain; chain = chain->next)
2275 if (chain->block >= block)
2277 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2283 /*-----------------------------------------------------------------*/
2284 /* powof2 - returns power of two for the number if number is pow 2 */
2285 /*-----------------------------------------------------------------*/
2287 powof2 (unsigned long num)
2300 if (n1s > 1 || nshifts == 0)
2316 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2317 symbol *__muldiv[3][3][2];
2318 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2319 sym_link *__multypes[3][2];
2320 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2321 symbol *__conv[2][3][2];
2322 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2323 symbol *__rlrr[2][3][2];
2325 sym_link *floatType;
2328 _mangleFunctionName(char *in)
2330 if (port->getMangledFunctionName)
2332 return port->getMangledFunctionName(in);
2340 /*-----------------------------------------------------------------*/
2341 /* typeFromStr - create a typechain from an encoded string */
2342 /* basic types - 'c' - char */
2348 /* '*' - pointer - default (GPOINTER) */
2349 /* modifiers - 'u' - unsigned */
2350 /* pointer modifiers - 'g' - generic */
2354 /* examples : "ig*" - generic int * */
2355 /* "cx*" - char xdata * */
2356 /* "ui" - unsigned int */
2357 /*-----------------------------------------------------------------*/
2358 sym_link *typeFromStr (char *s)
2360 sym_link *r = newLink();
2372 r->class = SPECIFIER;
2373 SPEC_NOUN(r) = V_CHAR;
2377 r->class = SPECIFIER;
2378 SPEC_NOUN(r) = V_INT;
2381 r->class = SPECIFIER;
2382 SPEC_NOUN(r) = V_INT;
2386 r->class = SPECIFIER;
2387 SPEC_NOUN(r) = V_FLOAT;
2390 r->class = SPECIFIER;
2391 SPEC_NOUN(r) = V_VOID;
2394 DCL_TYPE(r) = port->unqualified_pointer;
2400 assert(*(s+1)=='*');
2404 r->class = DECLARATOR ;
2407 DCL_TYPE(r) = GPOINTER;
2410 DCL_TYPE(r) = FPOINTER;
2413 DCL_TYPE(r) = CPOINTER;
2416 DCL_TYPE(r) = POINTER;
2422 werror(E_INTERNAL_ERROR,"typeFromStr");
2425 if (IS_SPEC(r) && usign) {
2434 /*-----------------------------------------------------------------*/
2435 /* initCSupport - create functions for C support routines */
2436 /*-----------------------------------------------------------------*/
2440 const char *smuldivmod[] =
2444 const char *sbwd[] =
2446 "char", "int", "long"
2452 const char *srlrr[] =
2457 int bwd, su, muldivmod, tofrom, rlrr;
2459 if (getenv("SDCC_NO_C_SUPPORT")) {
2460 /* for debugging only */
2464 floatType = newFloatLink ();
2466 for (bwd = 0; bwd < 3; bwd++)
2483 __multypes[bwd][0] = l;
2484 __multypes[bwd][1] = copyLinkChain (l);
2485 SPEC_USIGN (__multypes[bwd][1]) = 1;
2488 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2489 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2490 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2491 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2492 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2493 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2494 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2495 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2496 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2497 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2499 for (tofrom = 0; tofrom < 2; tofrom++)
2501 for (bwd = 0; bwd < 3; bwd++)
2503 for (su = 0; su < 2; su++)
2507 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2508 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2512 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2513 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2519 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2521 for (bwd = 0; bwd < 3; bwd++)
2523 for (su = 0; su < 2; su++)
2525 sprintf (buffer, "_%s%s%s",
2526 smuldivmod[muldivmod],
2529 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2530 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2535 for (rlrr = 0; rlrr < 2; rlrr++)
2537 for (bwd = 0; bwd < 3; bwd++)
2539 for (su = 0; su < 2; su++)
2541 sprintf (buffer, "_%s%s%s",
2545 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2546 FUNC_NONBANKED (__rlrr[rlrr][bwd][su]->type) = 1;
2552 /*-----------------------------------------------------------------*/
2553 /* initBuiltIns - create prototypes for builtin functions */
2554 /*-----------------------------------------------------------------*/
2560 if (!port->builtintable) return ;
2562 for (i = 0 ; port->builtintable[i].name ; i++) {
2563 sym = funcOfTypeVarg(port->builtintable[i].name,port->builtintable[i].rtype,
2564 port->builtintable[i].nParms,port->builtintable[i].parm_types);
2565 FUNC_ISBUILTIN(sym->type) = 1;
2566 FUNC_ISREENT(sym->type) = 0; /* can never be reentrant */