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);
996 werror (E_DUPLICATE, sym->name);
1002 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1007 /*------------------------------------------------------------------*/
1008 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
1009 /*------------------------------------------------------------------*/
1011 funcInChain (sym_link * lnk)
1022 /*------------------------------------------------------------------*/
1023 /* structElemType - returns the type info of a sturct member */
1024 /*------------------------------------------------------------------*/
1026 structElemType (sym_link * stype, value * id)
1028 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
1029 sym_link *type, *etype;
1030 sym_link *petype = getSpec (stype);
1035 /* look for the id */
1038 if (strcmp (fields->rname, id->name) == 0)
1040 type = copyLinkChain (fields->type);
1041 etype = getSpec (type);
1042 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1043 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1046 fields = fields->next;
1048 werror (E_NOT_MEMBER, id->name);
1053 /*------------------------------------------------------------------*/
1054 /* getStructElement - returns element of a tructure definition */
1055 /*------------------------------------------------------------------*/
1057 getStructElement (structdef * sdef, symbol * sym)
1061 for (field = sdef->fields; field; field = field->next)
1062 if (strcmp (field->name, sym->name) == 0)
1065 werror (E_NOT_MEMBER, sym->name);
1067 return sdef->fields;
1070 /*------------------------------------------------------------------*/
1071 /* compStructSize - computes the size of a structure */
1072 /*------------------------------------------------------------------*/
1074 compStructSize (int su, structdef * sdef)
1076 int sum = 0, usum = 0;
1080 /* for the identifiers */
1081 loop = sdef->fields;
1084 /* create the internal name for this variable */
1085 sprintf (loop->rname, "_%s", loop->name);
1086 loop->offset = (su == UNION ? sum = 0 : sum);
1087 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1089 /* if this is a bit field */
1092 /* change it to a unsigned bit */
1093 SPEC_NOUN (loop->etype) = V_BIT;
1094 SPEC_USIGN (loop->etype) = 1;
1095 /* check if this fit into the remaining */
1096 /* bits of this byte else align it to the */
1097 /* next byte boundary */
1098 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1099 SPEC_BSTR (loop->etype) = bitOffset;
1100 if ((bitOffset += (loop->bitVar % 8)) == 8)
1103 else /* does not fit */ {
1105 SPEC_BSTR (loop->etype) = bitOffset;
1106 sum += (loop->bitVar / 8);
1107 bitOffset += (loop->bitVar % 8);
1109 /* if this is the last field then pad */
1110 if (!loop->next && bitOffset && bitOffset != 8) {
1116 checkDecl (loop, 1);
1117 sum += getSize (loop->type);
1120 #if 0 // jwk: this is done now in addDecl()
1121 /* if function then do the arguments for it */
1122 if (funcInChain (loop->type)) {
1123 processFuncArgs (loop);
1129 /* if this is not a bitfield but the */
1130 /* previous one was and did not take */
1131 /* the whole byte then pad the rest */
1132 if ((loop && !loop->bitVar) && bitOffset) {
1137 /* if union then size = sizeof larget field */
1139 usum = max (usum, sum);
1143 return (su == UNION ? usum : sum);
1146 /*------------------------------------------------------------------*/
1147 /* checkSClass - check the storage class specification */
1148 /*------------------------------------------------------------------*/
1150 checkSClass (symbol * sym, int isProto)
1152 if (getenv("DEBUG_SANITY")) {
1153 fprintf (stderr, "checkSClass: %s \n", sym->name);
1156 /* type is literal can happen foe enums change
1158 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1159 SPEC_SCLS (sym->etype) = S_AUTO;
1161 /* if sfr or sbit then must also be */
1162 /* volatile the initial value will be xlated */
1163 /* to an absolute address */
1164 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1165 SPEC_SCLS (sym->etype) == S_SFR)
1167 SPEC_VOLATILE (sym->etype) = 1;
1168 /* if initial value given */
1171 SPEC_ABSA (sym->etype) = 1;
1172 SPEC_ADDR (sym->etype) =
1173 (int) list2int (sym->ival);
1178 /* if absolute address given then it mark it as
1180 if (IS_ABSOLUTE (sym->etype))
1181 SPEC_VOLATILE (sym->etype) = 1;
1183 /* global variables declared const put into code */
1184 if (sym->level == 0 &&
1185 SPEC_CONST (sym->etype)) {
1186 SPEC_SCLS (sym->etype) = S_CODE;
1189 /* global variable in code space is a constant */
1190 if (sym->level == 0 &&
1191 SPEC_SCLS (sym->etype) == S_CODE &&
1193 SPEC_CONST (sym->etype) = 1;
1196 /* if bit variable then no storage class can be */
1197 /* specified since bit is already a storage */
1198 if (IS_BITVAR (sym->etype) &&
1199 (SPEC_SCLS (sym->etype) != S_FIXED &&
1200 SPEC_SCLS (sym->etype) != S_SBIT &&
1201 SPEC_SCLS (sym->etype) != S_BIT)
1204 werror (E_BITVAR_STORAGE, sym->name);
1205 SPEC_SCLS (sym->etype) = S_FIXED;
1208 /* extern variables cannot be initialized */
1209 if (IS_EXTERN (sym->etype) && sym->ival)
1211 werror (E_EXTERN_INIT, sym->name);
1215 /* if this is an atomatic symbol */
1216 if (sym->level && (options.stackAuto || reentrant)) {
1217 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1218 SPEC_SCLS (sym->etype) == S_FIXED ||
1219 SPEC_SCLS (sym->etype) == S_REGISTER ||
1220 SPEC_SCLS (sym->etype) == S_STACK ||
1221 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1222 SPEC_SCLS (sym->etype) = S_AUTO;
1224 /* storage class may only be specified for statics */
1225 if (!IS_STATIC(sym->etype)) {
1226 werror (E_AUTO_ASSUMED, sym->name);
1231 /* automatic symbols cannot be given */
1232 /* an absolute address ignore it */
1234 SPEC_ABSA (sym->etype) &&
1235 (options.stackAuto || reentrant))
1237 werror (E_AUTO_ABSA, sym->name);
1238 SPEC_ABSA (sym->etype) = 0;
1241 /* arrays & pointers cannot be defined for bits */
1242 /* SBITS or SFRs or BIT */
1243 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1244 (SPEC_NOUN (sym->etype) == V_BIT ||
1245 SPEC_NOUN (sym->etype) == V_SBIT ||
1246 SPEC_SCLS (sym->etype) == S_SFR))
1247 werror (E_BIT_ARRAY, sym->name);
1249 /* if this is a bit|sbit then set length & start */
1250 if (SPEC_NOUN (sym->etype) == V_BIT ||
1251 SPEC_NOUN (sym->etype) == V_SBIT)
1253 SPEC_BLEN (sym->etype) = 1;
1254 SPEC_BSTR (sym->etype) = 0;
1258 /* variables declared in CODE space must have */
1259 /* initializers if not an extern */
1260 if (SPEC_SCLS (sym->etype) == S_CODE &&
1261 sym->ival == NULL &&
1263 port->mem.code_ro &&
1264 !IS_EXTERN (sym->etype) &&
1265 !funcInChain (sym->type))
1266 werror (E_CODE_NO_INIT, sym->name);
1269 /* if parameter or local variable then change */
1270 /* the storage class to reflect where the var will go */
1271 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1272 !IS_STATIC(sym->etype))
1274 if (options.stackAuto || (currFunc && IFFUNC_ISREENT (currFunc->type)))
1276 SPEC_SCLS (sym->etype) = (options.useXstack ?
1277 S_XSTACK : S_STACK);
1281 /* hack-o-matic! I see no reason why the useXstack option should ever
1282 * control this allcoation, but the code was originally that way, and
1283 * changing it for non-390 ports breaks the compiler badly.
1285 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1286 SPEC_SCLS (sym->etype) = (useXdata ?
1292 /*------------------------------------------------------------------*/
1293 /* changePointer - change pointer to functions */
1294 /*------------------------------------------------------------------*/
1296 changePointer (symbol * sym)
1300 /* go thru the chain of declarations */
1301 /* if we find a pointer to a function */
1302 /* unconditionally change it to a ptr */
1304 for (p = sym->type; p; p = p->next)
1306 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1307 DCL_TYPE (p) = port->unqualified_pointer;
1308 if (IS_PTR (p) && IS_FUNC (p->next))
1309 DCL_TYPE (p) = CPOINTER;
1313 /*------------------------------------------------------------------*/
1314 /* checkDecl - does semantic validation of a declaration */
1315 /*------------------------------------------------------------------*/
1317 checkDecl (symbol * sym, int isProto)
1320 checkSClass (sym, isProto); /* check the storage class */
1321 changePointer (sym); /* change pointers if required */
1323 /* if this is an array without any dimension
1324 then update the dimension from the initial value */
1325 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1326 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1331 /*------------------------------------------------------------------*/
1332 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1333 /*------------------------------------------------------------------*/
1335 copyLinkChain (sym_link * p)
1337 sym_link *head, *curr, *loop;
1340 head = loop = (curr ? newLink () : (void *) NULL);
1343 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1344 loop->next = (curr->next ? newLink () : (void *) NULL);
1353 /*------------------------------------------------------------------*/
1354 /* cleanUpBlock - cleansup the symbol table specified for all the */
1355 /* symbols in the given block */
1356 /*------------------------------------------------------------------*/
1358 cleanUpBlock (bucket ** table, int block)
1363 /* go thru the entire table */
1364 for (i = 0; i < 256; i++)
1366 for (chain = table[i]; chain; chain = chain->next)
1368 if (chain->block >= block)
1370 deleteSym (table, chain->sym, chain->name);
1376 /*------------------------------------------------------------------*/
1377 /* cleanUpLevel - cleansup the symbol table specified for all the */
1378 /* symbols in the given level */
1379 /*------------------------------------------------------------------*/
1381 cleanUpLevel (bucket ** table, int level)
1386 /* go thru the entire table */
1387 for (i = 0; i < 256; i++)
1389 for (chain = table[i]; chain; chain = chain->next)
1391 if (chain->level >= level)
1393 deleteSym (table, chain->sym, chain->name);
1399 /*------------------------------------------------------------------*/
1400 /* computeType - computes the resultant type from two types */
1401 /*------------------------------------------------------------------*/
1403 computeType (sym_link * type1, sym_link * type2)
1407 sym_link *etype1 = getSpec (type1);
1408 sym_link *etype2 = getSpec (type2);
1410 /* if one of them is a float then result is a float */
1411 /* here we assume that the types passed are okay */
1412 /* and can be cast to one another */
1413 /* which ever is greater in size */
1414 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1415 rType = newFloatLink ();
1417 /* if only one of them is a bit variable
1418 then the other one prevails */
1419 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1420 rType = copyLinkChain (type2);
1421 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1422 rType = copyLinkChain (type1);
1424 /* if one of them is a pointer or array then that
1426 if (IS_PTR (type1) || IS_ARRAY (type1))
1427 rType = copyLinkChain (type1);
1428 else if (IS_PTR (type2) || IS_ARRAY (type2))
1429 rType = copyLinkChain (type2);
1430 else if (getSize (type1) > getSize (type2))
1431 rType = copyLinkChain (type1);
1433 rType = copyLinkChain (type2);
1435 reType = getSpec (rType);
1437 /* if either of them unsigned but not val then make this unsigned */
1438 if (((!IS_LITERAL(type1) && SPEC_USIGN (etype1)) ||
1439 (!IS_LITERAL(type2) && SPEC_USIGN (etype2))) &&
1441 SPEC_USIGN (reType) = 1;
1443 SPEC_USIGN (reType) = 0;
1445 /* if result is a literal then make not so */
1446 if (IS_LITERAL (reType))
1447 SPEC_SCLS (reType) = S_REGISTER;
1452 /*--------------------------------------------------------------------*/
1453 /* compareType - will do type check return 1 if match, -1 if castable */
1454 /*--------------------------------------------------------------------*/
1456 compareType (sym_link * dest, sym_link * src)
1467 /* if dest is a declarator then */
1472 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1474 //checkFunction(src,dest);
1476 return compareType (dest->next, src->next);
1478 if (IS_PTR (src) && IS_GENPTR (dest))
1480 if (IS_PTR (dest) && IS_ARRAY (src)) {
1481 value *val=aggregateToPointer (valFromType(src));
1482 int res=compareType (dest, val->type);
1483 Safe_free(val->type);
1485 //return res ? -1 : 0;
1488 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1489 return compareType (dest->next, src);
1492 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1498 /* if one is a specifier and the other is not */
1499 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1500 (IS_SPEC (dest) && !IS_SPEC (src)))
1503 /* if one of them is a void then ok */
1504 if (SPEC_NOUN (dest) == V_VOID &&
1505 SPEC_NOUN (src) != V_VOID)
1508 if (SPEC_NOUN (dest) != V_VOID &&
1509 SPEC_NOUN (src) == V_VOID)
1512 /* if they are both bitfields then if the lengths
1513 and starts don't match */
1514 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1515 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1516 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1519 /* it is a specifier */
1520 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1522 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1523 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1524 getSize (dest) == getSize (src))
1526 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1531 else if (IS_STRUCT (dest))
1533 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1538 if (SPEC_LONG (dest) != SPEC_LONG (src))
1541 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1547 /*------------------------------------------------------------------*/
1548 /* inCalleeSaveList - return 1 if found in callee save list */
1549 /*------------------------------------------------------------------*/
1551 inCalleeSaveList (char *s)
1555 if (options.all_callee_saves) return 1;
1556 for (i = 0; options.calleeSaves[i]; i++)
1557 if (strcmp (options.calleeSaves[i], s) == 0)
1563 /*-----------------------------------------------------------------*/
1564 /* aggregateToPointer: change an agggregate type function */
1565 /* argument to a pointer to that type. */
1566 /*-----------------------------------------------------------------*/
1568 aggregateToPointer (value * val)
1570 if (IS_AGGREGATE (val->type))
1572 /* if this is a structure */
1573 /* then we need to add a new link */
1574 if (IS_STRUCT (val->type))
1576 /* first lets add DECLARATOR type */
1577 sym_link *p = val->type;
1579 werror (W_STRUCT_AS_ARG, val->name);
1580 val->type = newLink ();
1581 val->type->next = p;
1584 /* change to a pointer depending on the */
1585 /* storage class specified */
1586 switch (SPEC_SCLS (val->etype))
1589 DCL_TYPE (val->type) = IPOINTER;
1592 DCL_TYPE (val->type) = PPOINTER;
1595 if (SPEC_OCLS(val->etype)) {
1596 DCL_TYPE(val->type)=PTR_TYPE(SPEC_OCLS(val->etype));
1599 // this happens for (external) function parameters
1600 DCL_TYPE (val->type) = port->unqualified_pointer;
1602 if (TARGET_IS_DS390) {
1603 /* The AUTO and REGISTER classes should probably
1604 * also become generic pointers, but I haven't yet
1605 * devised a test case for that.
1607 DCL_TYPE (val->type) = port->unqualified_pointer;
1610 if (options.model==MODEL_LARGE) {
1611 DCL_TYPE (val->type) = FPOINTER;
1620 DCL_TYPE (val->type) = POINTER;
1623 DCL_TYPE (val->type) = CPOINTER;
1626 DCL_TYPE (val->type) = FPOINTER;
1629 DCL_TYPE (val->type) = EEPPOINTER;
1632 DCL_TYPE (val->type) = port->unqualified_pointer;
1635 /* is there is a symbol associated then */
1636 /* change the type of the symbol as well */
1639 val->sym->type = copyLinkChain (val->type);
1640 val->sym->etype = getSpec (val->sym->type);
1645 /*------------------------------------------------------------------*/
1646 /* checkFunction - does all kinds of check on a function */
1647 /*------------------------------------------------------------------*/
1649 checkFunction (symbol * sym, symbol *csym)
1651 value *exargs, *acargs;
1655 if (getenv("DEBUG_SANITY")) {
1656 fprintf (stderr, "checkFunction: %s ", sym->name);
1659 /* make sure the type is complete and sane */
1660 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1662 /* if not type then some kind of error */
1666 /* if the function has no type then make it return int */
1667 if (!sym->type->next)
1668 sym->type->next = sym->etype = newIntLink ();
1670 /* function cannot return aggregate */
1671 if (IS_AGGREGATE (sym->type->next))
1673 werror (E_FUNC_AGGR, sym->name);
1677 /* function cannot return bit */
1678 if (IS_BITVAR (sym->type->next))
1680 werror (E_FUNC_BIT, sym->name);
1684 /* check if this function is defined as calleeSaves
1685 then mark it as such */
1686 FUNC_CALLEESAVES(sym->type) = inCalleeSaveList (sym->name);
1688 /* if interrupt service routine */
1689 /* then it cannot have arguments */
1690 if (IFFUNC_ARGS(sym->type) && FUNC_ISISR (sym->type))
1692 if (!IS_VOID(FUNC_ARGS(sym->type)->type)) {
1693 werror (E_INT_ARGS, sym->name);
1694 FUNC_ARGS(sym->type)=NULL;
1698 if (!csym && !(csym = findSym (SymbolTab, sym, sym->name)))
1699 return 1; /* not defined nothing more to check */
1701 /* check if body already present */
1702 if (csym && IFFUNC_HASBODY(csym->type))
1704 werror (E_FUNC_BODY, sym->name);
1708 /* check the return value type */
1709 if (compareType (csym->type, sym->type) <= 0)
1711 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1712 printFromToType(csym->type, sym->type);
1716 if (FUNC_ISISR (csym->type) != FUNC_ISISR (sym->type))
1718 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1721 if (FUNC_REGBANK (csym->type) != FUNC_REGBANK (sym->type))
1723 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1726 if (IFFUNC_ISNAKED (csym->type) != IFFUNC_ISNAKED (sym->type))
1728 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1731 /* compare expected args with actual args */
1732 exargs = FUNC_ARGS(csym->type);
1733 acargs = FUNC_ARGS(sym->type);
1735 /* for all the expected args do */
1738 exargs = exargs->next, acargs = acargs->next, argCnt++)
1740 if (getenv("DEBUG_SANITY")) {
1741 fprintf (stderr, "checkFunction: %s ", exargs->name);
1743 /* make sure the type is complete and sane */
1744 checkTypeSanity(exargs->etype, exargs->name);
1746 /* If the actual argument is an array, any prototype
1747 * will have modified it to a pointer. Duplicate that
1750 if (IS_AGGREGATE (acargs->type))
1752 checkValue = copyValue (acargs);
1753 aggregateToPointer (checkValue);
1757 checkValue = acargs;
1760 if (compareType (exargs->type, checkValue->type) <= 0)
1762 werror (E_ARG_TYPE, argCnt);
1763 printFromToType(exargs->type, checkValue->type);
1768 /* if one them ended we have a problem */
1769 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1770 (!exargs && acargs && !IS_VOID (acargs->type)))
1771 werror (E_ARG_COUNT);
1773 /* replace with this defition */
1774 sym->cdef = csym->cdef;
1775 deleteSym (SymbolTab, csym, csym->name);
1776 deleteFromSeg(csym);
1777 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1778 if (IS_EXTERN (csym->etype) && !
1779 IS_EXTERN (sym->etype))
1781 addSet (&publics, sym);
1786 /*-----------------------------------------------------------------*/
1787 /* processFuncArgs - does some processing with function args */
1788 /*-----------------------------------------------------------------*/
1790 processFuncArgs (symbol * func)
1794 sym_link *funcType=func->type;
1796 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
1797 fprintf (stderr, "SDCCsymt.c:processFuncArgs(%s)\n", func->name);
1799 // if this is a pointer to a function
1800 if (IS_PTR(funcType)) {
1801 funcType=funcType->next;
1804 /* if this function has variable argument list */
1805 /* then make the function a reentrant one */
1806 if (IFFUNC_HASVARARGS(funcType))
1807 FUNC_ISREENT(funcType)=1;
1809 /* check if this function is defined as calleeSaves
1810 then mark it as such */
1811 FUNC_CALLEESAVES(funcType) = inCalleeSaveList (func->name);
1813 /* loop thru all the arguments */
1814 val = FUNC_ARGS(funcType);
1816 /* if it is void then remove parameters */
1817 if (val && IS_VOID (val->type))
1819 FUNC_ARGS(funcType) = NULL;
1823 /* reset regparm for the port */
1824 (*port->reset_regparms) ();
1825 /* if any of the arguments is an aggregate */
1826 /* change it to pointer to the same type */
1829 /* mark it as a register parameter if
1830 the function does not have VA_ARG
1831 and as port dictates */
1832 if (!IFFUNC_HASVARARGS(funcType) &&
1833 (*port->reg_parm) (val->type))
1835 SPEC_REGPARM (val->etype) = 1;
1838 if (IS_AGGREGATE (val->type))
1840 aggregateToPointer (val);
1847 /* if this is an internal generated function call */
1849 /* ignore --stack-auto for this one, we don't know how it is compiled */
1850 /* simply trust on --int-long-reent or --float-reent */
1851 if (IFFUNC_ISREENT(funcType)) {
1855 /* if this function is reentrant or */
1856 /* automatics r 2b stacked then nothing */
1857 if (IFFUNC_ISREENT (funcType) || options.stackAuto)
1861 val = FUNC_ARGS(funcType);
1866 /* if a symbolname is not given */
1867 /* synthesize a variable name */
1871 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1872 val->sym = newSymbol (val->name, 1);
1873 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1874 val->sym->type = copyLinkChain (val->type);
1875 val->sym->etype = getSpec (val->sym->type);
1876 val->sym->_isparm = 1;
1877 strcpy (val->sym->rname, val->name);
1878 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1879 SPEC_STAT (func->etype);
1880 addSymChain (val->sym);
1883 else /* symbol name given create synth name */
1886 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1887 strcpy (val->sym->rname, val->name);
1888 val->sym->_isparm = 1;
1889 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1890 (options.model != MODEL_SMALL ? xdata : data);
1891 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1892 SPEC_STAT (func->etype);
1898 /*-----------------------------------------------------------------*/
1899 /* isSymbolEqual - compares two symbols return 1 if they match */
1900 /*-----------------------------------------------------------------*/
1902 isSymbolEqual (symbol * dest, symbol * src)
1904 /* if pointers match then equal */
1908 /* if one of them is null then don't match */
1912 /* if both of them have rname match on rname */
1913 if (dest->rname[0] && src->rname[0])
1914 return (!strcmp (dest->rname, src->rname));
1916 /* otherwise match on name */
1917 return (!strcmp (dest->name, src->name));
1920 void PT(sym_link *type)
1922 printTypeChain(type,0);
1924 /*-----------------------------------------------------------------*/
1925 /* printTypeChain - prints the type chain in human readable form */
1926 /*-----------------------------------------------------------------*/
1928 printTypeChain (sym_link * start, FILE * of)
1931 sym_link * type, * search;
1940 fprintf (of, "void");
1944 /* print the chain as it is written in the source: */
1945 /* start with the last entry */
1946 for (type = start; type && type->next; type = type->next)
1952 if (DCL_PTR_VOLATILE (type)) {
1953 fprintf (of, "volatile ");
1955 switch (DCL_TYPE (type))
1958 fprintf (of, "function %s", (IFFUNC_ISBUILTIN(type) ? "__builtin__" : " "));
1961 if (DCL_PTR_CONST (type))
1962 fprintf (of, "const ");
1963 fprintf (of, "generic * ");
1966 if (DCL_PTR_CONST (type))
1967 fprintf (of, "const ");
1968 fprintf (of, "code * ");
1971 if (DCL_PTR_CONST (type))
1972 fprintf (of, "const ");
1973 fprintf (of, "xdata * ");
1976 if (DCL_PTR_CONST (type))
1977 fprintf (of, "const ");
1978 fprintf (of, "eeprom * ");
1982 if (DCL_PTR_CONST (type))
1983 fprintf (of, "const ");
1984 fprintf (of, "near *");
1987 if (DCL_PTR_CONST (type))
1988 fprintf (of, "const ");
1989 fprintf (of, "idata * ");
1992 if (DCL_PTR_CONST (type))
1993 fprintf (of, "const ");
1994 fprintf (of, "pdata * ");
1997 if (DCL_PTR_CONST (type))
1998 fprintf (of, "const ");
1999 fprintf (of, "unkown * ");
2002 fprintf (of, "[] ");
2008 switch (SPEC_SCLS(type))
2010 case S_DATA: fprintf (of, "data "); break;
2011 case S_XDATA: fprintf (of, "xdata "); break;
2012 case S_SFR: fprintf (of, "sfr "); break;
2013 case S_SBIT: fprintf (of, "sbit "); break;
2014 case S_CODE: fprintf (of, "code "); break;
2015 case S_IDATA: fprintf (of, "idata "); break;
2016 case S_PDATA: fprintf (of, "pdata "); break;
2017 case S_LITERAL: fprintf (of, "literal "); break;
2018 case S_STACK: fprintf (of, "stack "); break;
2019 case S_XSTACK: fprintf (of, "xstack "); break;
2020 case S_BIT: fprintf (of, "bit "); break;
2021 case S_EEPROM: fprintf (of, "eeprom "); break;
2025 if (SPEC_VOLATILE (type))
2026 fprintf (of, "volatile ");
2027 if (SPEC_USIGN (type))
2028 fprintf (of, "unsigned ");
2029 if (SPEC_CONST (type))
2030 fprintf (of, "const ");
2032 switch (SPEC_NOUN (type))
2036 fprintf (of, "long ");
2037 fprintf (of, "int");
2041 fprintf (of, "char");
2045 fprintf (of, "void");
2049 fprintf (of, "float");
2053 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2057 fprintf (of, "sbit");
2061 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2065 fprintf (of, "double");
2069 fprintf (of, "unknown type");
2073 /* search entry in list before "type" */
2074 for (search = start; search && search->next != type;)
2075 search = search->next;
2084 /*-----------------------------------------------------------------*/
2085 /* cdbTypeInfo - print the type information for debugger */
2086 /*-----------------------------------------------------------------*/
2088 cdbTypeInfo (sym_link * type, FILE * of)
2090 fprintf (of, "{%d}", getSize (type));
2095 switch (DCL_TYPE (type))
2098 fprintf (of, "DF,");
2101 fprintf (of, "DG,");
2104 fprintf (of, "DC,");
2107 fprintf (of, "DX,");
2110 fprintf (of, "DD,");
2113 fprintf (of, "DI,");
2116 fprintf (of, "DP,");
2119 fprintf (of, "DA,");
2122 fprintf (of, "DA%d,", DCL_ELEM (type));
2130 switch (SPEC_NOUN (type))
2152 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2160 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2167 if (SPEC_USIGN (type))
2175 /*-----------------------------------------------------------------*/
2176 /* cdbSymbol - prints a symbol & its type information for debugger */
2177 /*-----------------------------------------------------------------*/
2179 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2191 fprintf (of, "S:"); /* symbol record */
2192 /* if this is not a structure symbol then
2193 we need to figure out the scope information */
2199 if (IS_STATIC (sym->etype))
2200 fprintf (of, "F%s$", moduleName); /* scope is file */
2202 fprintf (of, "G$"); /* scope is global */
2205 /* symbol is local */
2206 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2209 fprintf (of, "S$"); /* scope is structure */
2211 /* print the name, & mangled name */
2212 fprintf (of, "%s$%d$%d(", sym->name,
2213 sym->level, sym->block);
2215 cdbTypeInfo (sym->type, of);
2218 /* print the address space */
2219 map = SPEC_OCLS (sym->etype);
2220 fprintf (of, "%c,%d,%d",
2221 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2223 /* if assigned to registers then output register names */
2224 /* if this is a function then print
2225 if is it an interrupt routine & interrupt number
2226 and the register bank it is using */
2228 fprintf (of, ",%d,%d,%d", FUNC_ISISR (sym->type),
2229 FUNC_INTNO (sym->type), FUNC_REGBANK (sym->type));
2230 /* alternate location to find this symbol @ : eg registers
2237 /*-----------------------------------------------------------------*/
2238 /* cdbStruct - print a structure for debugger */
2239 /*-----------------------------------------------------------------*/
2241 cdbStruct (structdef * sdef, int block, FILE * of,
2242 int inStruct, char *tag)
2247 /* if block # then must have function scope */
2248 fprintf (of, "F%s$", moduleName);
2249 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2250 for (sym = sdef->fields; sym; sym = sym->next)
2252 fprintf (of, "({%d}", sym->offset);
2253 cdbSymbol (sym, of, TRUE, FALSE);
2261 /*------------------------------------------------------------------*/
2262 /* cdbStructBlock - calls struct printing for a blcks */
2263 /*------------------------------------------------------------------*/
2265 cdbStructBlock (int block, FILE * of)
2268 bucket **table = StructTab;
2272 /* go thru the entire table */
2273 for (i = 0; i < 256; i++)
2275 for (chain = table[i]; chain; chain = chain->next)
2277 if (chain->block >= block)
2279 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2285 /*-----------------------------------------------------------------*/
2286 /* powof2 - returns power of two for the number if number is pow 2 */
2287 /*-----------------------------------------------------------------*/
2289 powof2 (unsigned long num)
2302 if (n1s > 1 || nshifts == 0)
2318 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2319 symbol *__muldiv[3][3][2];
2320 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2321 sym_link *__multypes[3][2];
2322 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2323 symbol *__conv[2][3][2];
2324 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2325 symbol *__rlrr[2][3][2];
2327 sym_link *floatType;
2330 _mangleFunctionName(char *in)
2332 if (port->getMangledFunctionName)
2334 return port->getMangledFunctionName(in);
2342 /*-----------------------------------------------------------------*/
2343 /* typeFromStr - create a typechain from an encoded string */
2344 /* basic types - 'c' - char */
2350 /* '*' - pointer - default (GPOINTER) */
2351 /* modifiers - 'u' - unsigned */
2352 /* pointer modifiers - 'g' - generic */
2356 /* examples : "ig*" - generic int * */
2357 /* "cx*" - char xdata * */
2358 /* "ui" - unsigned int */
2359 /*-----------------------------------------------------------------*/
2360 sym_link *typeFromStr (char *s)
2362 sym_link *r = newLink();
2374 r->class = SPECIFIER;
2375 SPEC_NOUN(r) = V_CHAR;
2379 r->class = SPECIFIER;
2380 SPEC_NOUN(r) = V_INT;
2383 r->class = SPECIFIER;
2384 SPEC_NOUN(r) = V_INT;
2388 r->class = SPECIFIER;
2389 SPEC_NOUN(r) = V_FLOAT;
2392 r->class = SPECIFIER;
2393 SPEC_NOUN(r) = V_VOID;
2396 DCL_TYPE(r) = port->unqualified_pointer;
2402 assert(*(s+1)=='*');
2406 r->class = DECLARATOR ;
2409 DCL_TYPE(r) = GPOINTER;
2412 DCL_TYPE(r) = FPOINTER;
2415 DCL_TYPE(r) = CPOINTER;
2418 DCL_TYPE(r) = POINTER;
2424 werror(E_INTERNAL_ERROR,"typeFromStr");
2427 if (IS_SPEC(r) && usign) {
2436 /*-----------------------------------------------------------------*/
2437 /* initCSupport - create functions for C support routines */
2438 /*-----------------------------------------------------------------*/
2442 const char *smuldivmod[] =
2446 const char *sbwd[] =
2448 "char", "int", "long"
2454 const char *srlrr[] =
2459 int bwd, su, muldivmod, tofrom, rlrr;
2461 if (getenv("SDCC_NO_C_SUPPORT")) {
2462 /* for debugging only */
2466 floatType = newFloatLink ();
2468 for (bwd = 0; bwd < 3; bwd++)
2485 __multypes[bwd][0] = l;
2486 __multypes[bwd][1] = copyLinkChain (l);
2487 SPEC_USIGN (__multypes[bwd][1]) = 1;
2490 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2491 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2492 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2493 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2494 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2495 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2496 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2497 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2498 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2499 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2501 for (tofrom = 0; tofrom < 2; tofrom++)
2503 for (bwd = 0; bwd < 3; bwd++)
2505 for (su = 0; su < 2; su++)
2509 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2510 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2514 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2515 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2521 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2523 for (bwd = 0; bwd < 3; bwd++)
2525 for (su = 0; su < 2; su++)
2527 sprintf (buffer, "_%s%s%s",
2528 smuldivmod[muldivmod],
2531 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2532 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2537 for (rlrr = 0; rlrr < 2; rlrr++)
2539 for (bwd = 0; bwd < 3; bwd++)
2541 for (su = 0; su < 2; su++)
2543 sprintf (buffer, "_%s%s%s",
2547 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2548 FUNC_NONBANKED (__rlrr[rlrr][bwd][su]->type) = 1;
2554 /*-----------------------------------------------------------------*/
2555 /* initBuiltIns - create prototypes for builtin functions */
2556 /*-----------------------------------------------------------------*/
2562 if (!port->builtintable) return ;
2564 for (i = 0 ; port->builtintable[i].name ; i++) {
2565 sym = funcOfTypeVarg(port->builtintable[i].name,port->builtintable[i].rtype,
2566 port->builtintable[i].nParms,port->builtintable[i].parm_types);
2567 FUNC_ISBUILTIN(sym->type) = 1;
2568 FUNC_ISREENT(sym->type) = 0; /* can never be reentrant */