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);
1050 // the show must go on
1051 return newIntLink();
1054 /*------------------------------------------------------------------*/
1055 /* getStructElement - returns element of a tructure definition */
1056 /*------------------------------------------------------------------*/
1058 getStructElement (structdef * sdef, symbol * sym)
1062 for (field = sdef->fields; field; field = field->next)
1063 if (strcmp (field->name, sym->name) == 0)
1066 werror (E_NOT_MEMBER, sym->name);
1068 return sdef->fields;
1071 /*------------------------------------------------------------------*/
1072 /* compStructSize - computes the size of a structure */
1073 /*------------------------------------------------------------------*/
1075 compStructSize (int su, structdef * sdef)
1077 int sum = 0, usum = 0;
1081 /* for the identifiers */
1082 loop = sdef->fields;
1085 /* create the internal name for this variable */
1086 sprintf (loop->rname, "_%s", loop->name);
1087 loop->offset = (su == UNION ? sum = 0 : sum);
1088 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1090 /* if this is a bit field */
1093 /* change it to a unsigned bit */
1094 SPEC_NOUN (loop->etype) = V_BIT;
1095 SPEC_USIGN (loop->etype) = 1;
1096 /* check if this fit into the remaining */
1097 /* bits of this byte else align it to the */
1098 /* next byte boundary */
1099 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1100 SPEC_BSTR (loop->etype) = bitOffset;
1101 if ((bitOffset += (loop->bitVar % 8)) == 8)
1104 else /* does not fit */ {
1106 SPEC_BSTR (loop->etype) = bitOffset;
1107 sum += (loop->bitVar / 8);
1108 bitOffset += (loop->bitVar % 8);
1110 /* if this is the last field then pad */
1111 if (!loop->next && bitOffset && bitOffset != 8) {
1117 checkDecl (loop, 1);
1118 sum += getSize (loop->type);
1123 /* if this is not a bitfield but the */
1124 /* previous one was and did not take */
1125 /* the whole byte then pad the rest */
1126 if ((loop && !loop->bitVar) && bitOffset) {
1131 /* if union then size = sizeof larget field */
1133 usum = max (usum, sum);
1137 return (su == UNION ? usum : sum);
1140 /*------------------------------------------------------------------*/
1141 /* checkSClass - check the storage class specification */
1142 /*------------------------------------------------------------------*/
1144 checkSClass (symbol * sym, int isProto)
1146 if (getenv("DEBUG_SANITY")) {
1147 fprintf (stderr, "checkSClass: %s \n", sym->name);
1150 /* type is literal can happen foe enums change
1152 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1153 SPEC_SCLS (sym->etype) = S_AUTO;
1155 /* if sfr or sbit then must also be */
1156 /* volatile the initial value will be xlated */
1157 /* to an absolute address */
1158 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1159 SPEC_SCLS (sym->etype) == S_SFR)
1161 SPEC_VOLATILE (sym->etype) = 1;
1162 /* if initial value given */
1165 SPEC_ABSA (sym->etype) = 1;
1166 SPEC_ADDR (sym->etype) =
1167 (int) list2int (sym->ival);
1172 /* if absolute address given then it mark it as
1174 if (IS_ABSOLUTE (sym->etype))
1175 SPEC_VOLATILE (sym->etype) = 1;
1177 /* global variables declared const put into code */
1178 /* if no other storage class specified */
1179 if (sym->level == 0 &&
1180 SPEC_CONST (sym->etype) &&
1181 SPEC_SCLS(sym->etype) == S_FIXED) {
1182 SPEC_SCLS (sym->etype) = S_CODE;
1185 /* global variable in code space is a constant */
1186 if (sym->level == 0 &&
1187 SPEC_SCLS (sym->etype) == S_CODE &&
1189 SPEC_CONST (sym->etype) = 1;
1192 /* if bit variable then no storage class can be */
1193 /* specified since bit is already a storage */
1194 if (IS_BITVAR (sym->etype) &&
1195 (SPEC_SCLS (sym->etype) != S_FIXED &&
1196 SPEC_SCLS (sym->etype) != S_SBIT &&
1197 SPEC_SCLS (sym->etype) != S_BIT)
1200 werror (E_BITVAR_STORAGE, sym->name);
1201 SPEC_SCLS (sym->etype) = S_FIXED;
1204 /* extern variables cannot be initialized */
1205 if (IS_EXTERN (sym->etype) && sym->ival)
1207 werror (E_EXTERN_INIT, sym->name);
1211 /* if this is an atomatic symbol */
1212 if (sym->level && (options.stackAuto || reentrant)) {
1213 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1214 SPEC_SCLS (sym->etype) == S_FIXED ||
1215 SPEC_SCLS (sym->etype) == S_REGISTER ||
1216 SPEC_SCLS (sym->etype) == S_STACK ||
1217 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1218 SPEC_SCLS (sym->etype) = S_AUTO;
1220 /* storage class may only be specified for statics */
1221 if (!IS_STATIC(sym->etype)) {
1222 werror (E_AUTO_ASSUMED, sym->name);
1227 /* automatic symbols cannot be given */
1228 /* an absolute address ignore it */
1230 SPEC_ABSA (sym->etype) &&
1231 (options.stackAuto || reentrant))
1233 werror (E_AUTO_ABSA, sym->name);
1234 SPEC_ABSA (sym->etype) = 0;
1237 /* arrays & pointers cannot be defined for bits */
1238 /* SBITS or SFRs or BIT */
1239 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1240 (SPEC_NOUN (sym->etype) == V_BIT ||
1241 SPEC_NOUN (sym->etype) == V_SBIT ||
1242 SPEC_SCLS (sym->etype) == S_SFR))
1243 werror (E_BIT_ARRAY, sym->name);
1245 /* if this is a bit|sbit then set length & start */
1246 if (SPEC_NOUN (sym->etype) == V_BIT ||
1247 SPEC_NOUN (sym->etype) == V_SBIT)
1249 SPEC_BLEN (sym->etype) = 1;
1250 SPEC_BSTR (sym->etype) = 0;
1254 /* variables declared in CODE space must have */
1255 /* initializers if not an extern */
1256 if (SPEC_SCLS (sym->etype) == S_CODE &&
1257 sym->ival == NULL &&
1259 port->mem.code_ro &&
1260 !IS_EXTERN (sym->etype) &&
1261 !funcInChain (sym->type))
1262 werror (E_CODE_NO_INIT, sym->name);
1265 /* if parameter or local variable then change */
1266 /* the storage class to reflect where the var will go */
1267 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1268 !IS_STATIC(sym->etype))
1270 if (options.stackAuto || (currFunc && IFFUNC_ISREENT (currFunc->type)))
1272 SPEC_SCLS (sym->etype) = (options.useXstack ?
1273 S_XSTACK : S_STACK);
1277 /* hack-o-matic! I see no reason why the useXstack option should ever
1278 * control this allcoation, but the code was originally that way, and
1279 * changing it for non-390 ports breaks the compiler badly.
1281 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1282 SPEC_SCLS (sym->etype) = (useXdata ?
1288 /*------------------------------------------------------------------*/
1289 /* changePointer - change pointer to functions */
1290 /*------------------------------------------------------------------*/
1292 changePointer (symbol * sym)
1296 /* go thru the chain of declarations */
1297 /* if we find a pointer to a function */
1298 /* unconditionally change it to a ptr */
1300 for (p = sym->type; p; p = p->next)
1302 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1303 DCL_TYPE (p) = port->unqualified_pointer;
1304 if (IS_PTR (p) && IS_FUNC (p->next))
1305 DCL_TYPE (p) = CPOINTER;
1309 /*------------------------------------------------------------------*/
1310 /* checkDecl - does semantic validation of a declaration */
1311 /*------------------------------------------------------------------*/
1313 checkDecl (symbol * sym, int isProto)
1316 checkSClass (sym, isProto); /* check the storage class */
1317 changePointer (sym); /* change pointers if required */
1319 /* if this is an array without any dimension
1320 then update the dimension from the initial value */
1321 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1322 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1327 /*------------------------------------------------------------------*/
1328 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1329 /*------------------------------------------------------------------*/
1331 copyLinkChain (sym_link * p)
1333 sym_link *head, *curr, *loop;
1336 head = loop = (curr ? newLink () : (void *) NULL);
1339 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1340 loop->next = (curr->next ? newLink () : (void *) NULL);
1349 /*------------------------------------------------------------------*/
1350 /* cleanUpBlock - cleansup the symbol table specified for all the */
1351 /* symbols in the given block */
1352 /*------------------------------------------------------------------*/
1354 cleanUpBlock (bucket ** table, int block)
1359 /* go thru the entire table */
1360 for (i = 0; i < 256; i++)
1362 for (chain = table[i]; chain; chain = chain->next)
1364 if (chain->block >= block)
1366 deleteSym (table, chain->sym, chain->name);
1372 /*------------------------------------------------------------------*/
1373 /* cleanUpLevel - cleansup the symbol table specified for all the */
1374 /* symbols in the given level */
1375 /*------------------------------------------------------------------*/
1377 cleanUpLevel (bucket ** table, int level)
1382 /* go thru the entire table */
1383 for (i = 0; i < 256; i++)
1385 for (chain = table[i]; chain; chain = chain->next)
1387 if (chain->level >= level)
1389 deleteSym (table, chain->sym, chain->name);
1395 /*------------------------------------------------------------------*/
1396 /* computeType - computes the resultant type from two types */
1397 /*------------------------------------------------------------------*/
1399 computeType (sym_link * type1, sym_link * type2)
1403 sym_link *etype1 = getSpec (type1);
1404 sym_link *etype2 = getSpec (type2);
1406 /* if one of them is a float then result is a float */
1407 /* here we assume that the types passed are okay */
1408 /* and can be cast to one another */
1409 /* which ever is greater in size */
1410 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1411 rType = newFloatLink ();
1413 /* if only one of them is a bit variable
1414 then the other one prevails */
1415 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1416 rType = copyLinkChain (type2);
1417 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1418 rType = copyLinkChain (type1);
1420 /* if one of them is a pointer or array then that
1422 if (IS_PTR (type1) || IS_ARRAY (type1))
1423 rType = copyLinkChain (type1);
1424 else if (IS_PTR (type2) || IS_ARRAY (type2))
1425 rType = copyLinkChain (type2);
1426 else if (getSize (type1) > getSize (type2))
1427 rType = copyLinkChain (type1);
1429 rType = copyLinkChain (type2);
1431 reType = getSpec (rType);
1433 /* if either of them unsigned but not val then make this unsigned */
1434 if (((!IS_LITERAL(type1) && SPEC_USIGN (etype1)) ||
1435 (!IS_LITERAL(type2) && SPEC_USIGN (etype2))) &&
1437 SPEC_USIGN (reType) = 1;
1439 SPEC_USIGN (reType) = 0;
1441 /* if result is a literal then make not so */
1442 if (IS_LITERAL (reType))
1443 SPEC_SCLS (reType) = S_REGISTER;
1448 /*--------------------------------------------------------------------*/
1449 /* compareType - will do type check return 1 if match, -1 if castable */
1450 /*--------------------------------------------------------------------*/
1452 compareType (sym_link * dest, sym_link * src)
1463 /* if dest is a declarator then */
1468 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1470 //checkFunction(src,dest);
1472 return compareType (dest->next, src->next);
1474 if (IS_PTR (src) && IS_GENPTR (dest))
1476 if (IS_PTR (dest) && IS_ARRAY (src)) {
1477 value *val=aggregateToPointer (valFromType(src));
1478 int res=compareType (dest, val->type);
1479 Safe_free(val->type);
1481 //return res ? -1 : 0;
1484 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1485 return compareType (dest->next, src);
1488 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1494 /* if one is a specifier and the other is not */
1495 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1496 (IS_SPEC (dest) && !IS_SPEC (src)))
1499 /* if one of them is a void then ok */
1500 if (SPEC_NOUN (dest) == V_VOID &&
1501 SPEC_NOUN (src) != V_VOID)
1504 if (SPEC_NOUN (dest) != V_VOID &&
1505 SPEC_NOUN (src) == V_VOID)
1508 /* if they are both bitfields then if the lengths
1509 and starts don't match */
1510 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1511 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1512 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1515 /* it is a specifier */
1516 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1518 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1519 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1520 getSize (dest) == getSize (src))
1522 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1527 else if (IS_STRUCT (dest))
1529 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1534 if (SPEC_LONG (dest) != SPEC_LONG (src))
1537 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1543 /*------------------------------------------------------------------*/
1544 /* inCalleeSaveList - return 1 if found in callee save list */
1545 /*------------------------------------------------------------------*/
1547 inCalleeSaveList (char *s)
1551 if (options.all_callee_saves) return 1;
1552 for (i = 0; options.calleeSaves[i]; i++)
1553 if (strcmp (options.calleeSaves[i], s) == 0)
1559 /*-----------------------------------------------------------------*/
1560 /* aggregateToPointer: change an agggregate type function */
1561 /* argument to a pointer to that type. */
1562 /*-----------------------------------------------------------------*/
1564 aggregateToPointer (value * val)
1566 if (IS_AGGREGATE (val->type))
1568 /* if this is a structure */
1569 /* then we need to add a new link */
1570 if (IS_STRUCT (val->type))
1572 /* first lets add DECLARATOR type */
1573 sym_link *p = val->type;
1575 werror (W_STRUCT_AS_ARG, val->name);
1576 val->type = newLink ();
1577 val->type->next = p;
1580 /* change to a pointer depending on the */
1581 /* storage class specified */
1582 switch (SPEC_SCLS (val->etype))
1585 DCL_TYPE (val->type) = IPOINTER;
1588 DCL_TYPE (val->type) = PPOINTER;
1591 if (SPEC_OCLS(val->etype)) {
1592 DCL_TYPE(val->type)=PTR_TYPE(SPEC_OCLS(val->etype));
1595 // this happens for (external) function parameters
1596 DCL_TYPE (val->type) = port->unqualified_pointer;
1598 if (TARGET_IS_DS390) {
1599 /* The AUTO and REGISTER classes should probably
1600 * also become generic pointers, but I haven't yet
1601 * devised a test case for that.
1603 DCL_TYPE (val->type) = port->unqualified_pointer;
1606 if (options.model==MODEL_LARGE) {
1607 DCL_TYPE (val->type) = FPOINTER;
1616 DCL_TYPE (val->type) = POINTER;
1619 DCL_TYPE (val->type) = CPOINTER;
1622 DCL_TYPE (val->type) = FPOINTER;
1625 DCL_TYPE (val->type) = EEPPOINTER;
1628 DCL_TYPE (val->type) = port->unqualified_pointer;
1631 /* is there is a symbol associated then */
1632 /* change the type of the symbol as well */
1635 val->sym->type = copyLinkChain (val->type);
1636 val->sym->etype = getSpec (val->sym->type);
1641 /*------------------------------------------------------------------*/
1642 /* checkFunction - does all kinds of check on a function */
1643 /*------------------------------------------------------------------*/
1645 checkFunction (symbol * sym, symbol *csym)
1647 value *exargs, *acargs;
1651 if (getenv("DEBUG_SANITY")) {
1652 fprintf (stderr, "checkFunction: %s ", sym->name);
1655 /* make sure the type is complete and sane */
1656 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1658 /* if not type then some kind of error */
1662 /* if the function has no type then make it return int */
1663 if (!sym->type->next)
1664 sym->type->next = sym->etype = newIntLink ();
1666 /* function cannot return aggregate */
1667 if (IS_AGGREGATE (sym->type->next))
1669 werror (E_FUNC_AGGR, sym->name);
1673 /* function cannot return bit */
1674 if (IS_BITVAR (sym->type->next))
1676 werror (E_FUNC_BIT, sym->name);
1680 /* check if this function is defined as calleeSaves
1681 then mark it as such */
1682 FUNC_CALLEESAVES(sym->type) = inCalleeSaveList (sym->name);
1684 /* if interrupt service routine */
1685 /* then it cannot have arguments */
1686 if (IFFUNC_ARGS(sym->type) && FUNC_ISISR (sym->type))
1688 if (!IS_VOID(FUNC_ARGS(sym->type)->type)) {
1689 werror (E_INT_ARGS, sym->name);
1690 FUNC_ARGS(sym->type)=NULL;
1694 for (argCnt=1, acargs = FUNC_ARGS(sym->type);
1696 acargs=acargs->next, argCnt++) {
1698 // this can happen for reentrant functions
1699 werror(E_PARAM_NAME_OMITTED, sym->name, argCnt);
1700 // the show must go on: synthesize a name and symbol
1701 sprintf (acargs->name, "_%s_PARM_%d", sym->name, argCnt);
1702 acargs->sym = newSymbol (acargs->name, 1);
1703 SPEC_OCLS (acargs->etype) = istack;
1704 acargs->sym->type = copyLinkChain (acargs->type);
1705 acargs->sym->etype = getSpec (acargs->sym->type);
1706 acargs->sym->_isparm = 1;
1707 strcpy (acargs->sym->rname, acargs->name);
1708 } else if (strcmp(acargs->sym->name, acargs->sym->rname)==0) {
1710 werror(E_PARAM_NAME_OMITTED, sym->name, argCnt);
1714 if (!csym && !(csym = findSym (SymbolTab, sym, sym->name)))
1715 return 1; /* not defined nothing more to check */
1717 /* check if body already present */
1718 if (csym && IFFUNC_HASBODY(csym->type))
1720 werror (E_FUNC_BODY, sym->name);
1724 /* check the return value type */
1725 if (compareType (csym->type, sym->type) <= 0)
1727 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1728 printFromToType(csym->type, sym->type);
1732 if (FUNC_ISISR (csym->type) != FUNC_ISISR (sym->type))
1734 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1737 if (FUNC_REGBANK (csym->type) != FUNC_REGBANK (sym->type))
1739 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1742 if (IFFUNC_ISNAKED (csym->type) != IFFUNC_ISNAKED (sym->type))
1744 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1747 /* compare expected args with actual args */
1748 exargs = FUNC_ARGS(csym->type);
1749 acargs = FUNC_ARGS(sym->type);
1751 /* for all the expected args do */
1754 exargs = exargs->next, acargs = acargs->next, argCnt++)
1756 if (getenv("DEBUG_SANITY")) {
1757 fprintf (stderr, "checkFunction: %s ", exargs->name);
1759 /* make sure the type is complete and sane */
1760 checkTypeSanity(exargs->etype, exargs->name);
1762 /* If the actual argument is an array, any prototype
1763 * will have modified it to a pointer. Duplicate that
1766 if (IS_AGGREGATE (acargs->type))
1768 checkValue = copyValue (acargs);
1769 aggregateToPointer (checkValue);
1773 checkValue = acargs;
1776 if (compareType (exargs->type, checkValue->type) <= 0)
1778 werror (E_ARG_TYPE, argCnt);
1779 printFromToType(exargs->type, checkValue->type);
1784 /* if one them ended we have a problem */
1785 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1786 (!exargs && acargs && !IS_VOID (acargs->type)))
1787 werror (E_ARG_COUNT);
1789 /* replace with this defition */
1790 sym->cdef = csym->cdef;
1791 deleteSym (SymbolTab, csym, csym->name);
1792 deleteFromSeg(csym);
1793 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1794 if (IS_EXTERN (csym->etype) && !
1795 IS_EXTERN (sym->etype))
1797 addSet (&publics, sym);
1802 /*-----------------------------------------------------------------*/
1803 /* processFuncArgs - does some processing with function args */
1804 /*-----------------------------------------------------------------*/
1806 processFuncArgs (symbol * func)
1810 sym_link *funcType=func->type;
1812 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
1813 fprintf (stderr, "SDCCsymt.c:processFuncArgs(%s)\n", func->name);
1815 // if this is a pointer to a function
1816 if (IS_PTR(funcType)) {
1817 funcType=funcType->next;
1820 /* if this function has variable argument list */
1821 /* then make the function a reentrant one */
1822 if (IFFUNC_HASVARARGS(funcType) || (options.stackAuto && !func->cdef))
1823 FUNC_ISREENT(funcType)=1;
1825 /* check if this function is defined as calleeSaves
1826 then mark it as such */
1827 FUNC_CALLEESAVES(funcType) = inCalleeSaveList (func->name);
1829 /* loop thru all the arguments */
1830 val = FUNC_ARGS(funcType);
1832 /* if it is void then remove parameters */
1833 if (val && IS_VOID (val->type))
1835 FUNC_ARGS(funcType) = NULL;
1839 /* reset regparm for the port */
1840 (*port->reset_regparms) ();
1841 /* if any of the arguments is an aggregate */
1842 /* change it to pointer to the same type */
1845 /* mark it as a register parameter if
1846 the function does not have VA_ARG
1847 and as port dictates */
1848 if (!IFFUNC_HASVARARGS(funcType) &&
1849 (*port->reg_parm) (val->type))
1851 SPEC_REGPARM (val->etype) = 1;
1852 } else if (IFFUNC_ISREENT(funcType)) {
1853 FUNC_HASSTACKPARM(funcType) = 1;
1856 if (IS_AGGREGATE (val->type))
1858 aggregateToPointer (val);
1865 /* if this is an internal generated function call */
1867 /* ignore --stack-auto for this one, we don't know how it is compiled */
1868 /* simply trust on --int-long-reent or --float-reent */
1869 if (IFFUNC_ISREENT(funcType)) {
1873 /* if this function is reentrant or */
1874 /* automatics r 2b stacked then nothing */
1875 if (IFFUNC_ISREENT (funcType) || options.stackAuto)
1879 val = FUNC_ARGS(funcType);
1884 /* if a symbolname is not given */
1885 /* synthesize a variable name */
1888 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1889 val->sym = newSymbol (val->name, 1);
1890 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1891 val->sym->type = copyLinkChain (val->type);
1892 val->sym->etype = getSpec (val->sym->type);
1893 val->sym->_isparm = 1;
1894 strcpy (val->sym->rname, val->name);
1895 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1896 SPEC_STAT (func->etype);
1897 addSymChain (val->sym);
1900 else /* symbol name given create synth name */
1903 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1904 strcpy (val->sym->rname, val->name);
1905 val->sym->_isparm = 1;
1906 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1907 (options.model != MODEL_SMALL ? xdata : data);
1908 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1909 SPEC_STAT (func->etype);
1915 /*-----------------------------------------------------------------*/
1916 /* isSymbolEqual - compares two symbols return 1 if they match */
1917 /*-----------------------------------------------------------------*/
1919 isSymbolEqual (symbol * dest, symbol * src)
1921 /* if pointers match then equal */
1925 /* if one of them is null then don't match */
1929 /* if both of them have rname match on rname */
1930 if (dest->rname[0] && src->rname[0])
1931 return (!strcmp (dest->rname, src->rname));
1933 /* otherwise match on name */
1934 return (!strcmp (dest->name, src->name));
1937 void PT(sym_link *type)
1939 printTypeChain(type,0);
1941 /*-----------------------------------------------------------------*/
1942 /* printTypeChain - prints the type chain in human readable form */
1943 /*-----------------------------------------------------------------*/
1945 printTypeChain (sym_link * start, FILE * of)
1948 sym_link * type, * search;
1957 fprintf (of, "void");
1961 /* print the chain as it is written in the source: */
1962 /* start with the last entry */
1963 for (type = start; type && type->next; type = type->next)
1969 if (DCL_PTR_VOLATILE (type)) {
1970 fprintf (of, "volatile ");
1972 switch (DCL_TYPE (type))
1975 fprintf (of, "function %s %s",
1976 (IFFUNC_ISBUILTIN(type) ? "__builtin__" : " "),
1977 (IFFUNC_ISJAVANATIVE(type) ? "_JavaNative" : " "));
1980 if (DCL_PTR_CONST (type))
1981 fprintf (of, "const ");
1982 fprintf (of, "generic * ");
1985 if (DCL_PTR_CONST (type))
1986 fprintf (of, "const ");
1987 fprintf (of, "code * ");
1990 if (DCL_PTR_CONST (type))
1991 fprintf (of, "const ");
1992 fprintf (of, "xdata * ");
1995 if (DCL_PTR_CONST (type))
1996 fprintf (of, "const ");
1997 fprintf (of, "eeprom * ");
2001 if (DCL_PTR_CONST (type))
2002 fprintf (of, "const ");
2003 fprintf (of, "near *");
2006 if (DCL_PTR_CONST (type))
2007 fprintf (of, "const ");
2008 fprintf (of, "idata * ");
2011 if (DCL_PTR_CONST (type))
2012 fprintf (of, "const ");
2013 fprintf (of, "pdata * ");
2016 if (DCL_PTR_CONST (type))
2017 fprintf (of, "const ");
2018 fprintf (of, "unkown * ");
2021 fprintf (of, "[] ");
2027 switch (SPEC_SCLS(type))
2029 case S_DATA: fprintf (of, "data "); break;
2030 case S_XDATA: fprintf (of, "xdata "); break;
2031 case S_SFR: fprintf (of, "sfr "); break;
2032 case S_SBIT: fprintf (of, "sbit "); break;
2033 case S_CODE: fprintf (of, "code "); break;
2034 case S_IDATA: fprintf (of, "idata "); break;
2035 case S_PDATA: fprintf (of, "pdata "); break;
2036 case S_LITERAL: fprintf (of, "literal "); break;
2037 case S_STACK: fprintf (of, "stack "); break;
2038 case S_XSTACK: fprintf (of, "xstack "); break;
2039 case S_BIT: fprintf (of, "bit "); break;
2040 case S_EEPROM: fprintf (of, "eeprom "); break;
2044 if (SPEC_VOLATILE (type))
2045 fprintf (of, "volatile ");
2046 if (SPEC_USIGN (type))
2047 fprintf (of, "unsigned ");
2048 if (SPEC_CONST (type))
2049 fprintf (of, "const ");
2051 switch (SPEC_NOUN (type))
2055 fprintf (of, "long ");
2056 fprintf (of, "int");
2060 fprintf (of, "char");
2064 fprintf (of, "void");
2068 fprintf (of, "float");
2072 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2076 fprintf (of, "sbit");
2080 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2084 fprintf (of, "double");
2088 fprintf (of, "unknown type");
2092 /* search entry in list before "type" */
2093 for (search = start; search && search->next != type;)
2094 search = search->next;
2103 /*-----------------------------------------------------------------*/
2104 /* cdbTypeInfo - print the type information for debugger */
2105 /*-----------------------------------------------------------------*/
2107 cdbTypeInfo (sym_link * type, FILE * of)
2109 fprintf (of, "{%d}", getSize (type));
2114 switch (DCL_TYPE (type))
2117 fprintf (of, "DF,");
2120 fprintf (of, "DG,");
2123 fprintf (of, "DC,");
2126 fprintf (of, "DX,");
2129 fprintf (of, "DD,");
2132 fprintf (of, "DI,");
2135 fprintf (of, "DP,");
2138 fprintf (of, "DA,");
2141 fprintf (of, "DA%d,", DCL_ELEM (type));
2149 switch (SPEC_NOUN (type))
2171 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2179 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2186 if (SPEC_USIGN (type))
2194 /*-----------------------------------------------------------------*/
2195 /* cdbSymbol - prints a symbol & its type information for debugger */
2196 /*-----------------------------------------------------------------*/
2198 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2210 fprintf (of, "S:"); /* symbol record */
2211 /* if this is not a structure symbol then
2212 we need to figure out the scope information */
2218 if (IS_STATIC (sym->etype))
2219 fprintf (of, "F%s$", moduleName); /* scope is file */
2221 fprintf (of, "G$"); /* scope is global */
2224 /* symbol is local */
2225 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2228 fprintf (of, "S$"); /* scope is structure */
2230 /* print the name, & mangled name */
2231 fprintf (of, "%s$%d$%d(", sym->name,
2232 sym->level, sym->block);
2234 cdbTypeInfo (sym->type, of);
2237 /* print the address space */
2238 map = SPEC_OCLS (sym->etype);
2239 fprintf (of, "%c,%d,%d",
2240 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2242 /* if assigned to registers then output register names */
2243 /* if this is a function then print
2244 if is it an interrupt routine & interrupt number
2245 and the register bank it is using */
2247 fprintf (of, ",%d,%d,%d", FUNC_ISISR (sym->type),
2248 FUNC_INTNO (sym->type), FUNC_REGBANK (sym->type));
2249 /* alternate location to find this symbol @ : eg registers
2256 /*-----------------------------------------------------------------*/
2257 /* cdbStruct - print a structure for debugger */
2258 /*-----------------------------------------------------------------*/
2260 cdbStruct (structdef * sdef, int block, FILE * of,
2261 int inStruct, char *tag)
2266 /* if block # then must have function scope */
2267 fprintf (of, "F%s$", moduleName);
2268 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2269 for (sym = sdef->fields; sym; sym = sym->next)
2271 fprintf (of, "({%d}", sym->offset);
2272 cdbSymbol (sym, of, TRUE, FALSE);
2280 /*------------------------------------------------------------------*/
2281 /* cdbStructBlock - calls struct printing for a blcks */
2282 /*------------------------------------------------------------------*/
2284 cdbStructBlock (int block, FILE * of)
2287 bucket **table = StructTab;
2291 /* go thru the entire table */
2292 for (i = 0; i < 256; i++)
2294 for (chain = table[i]; chain; chain = chain->next)
2296 if (chain->block >= block)
2298 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2304 /*-----------------------------------------------------------------*/
2305 /* powof2 - returns power of two for the number if number is pow 2 */
2306 /*-----------------------------------------------------------------*/
2308 powof2 (unsigned long num)
2321 if (n1s > 1 || nshifts == 0)
2337 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2338 symbol *__muldiv[3][3][2];
2339 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2340 sym_link *__multypes[3][2];
2341 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2342 symbol *__conv[2][3][2];
2343 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2344 symbol *__rlrr[2][3][2];
2346 sym_link *floatType;
2349 _mangleFunctionName(char *in)
2351 if (port->getMangledFunctionName)
2353 return port->getMangledFunctionName(in);
2361 /*-----------------------------------------------------------------*/
2362 /* typeFromStr - create a typechain from an encoded string */
2363 /* basic types - 'c' - char */
2369 /* '*' - pointer - default (GPOINTER) */
2370 /* modifiers - 'u' - unsigned */
2371 /* pointer modifiers - 'g' - generic */
2375 /* 'F' - function */
2376 /* examples : "ig*" - generic int * */
2377 /* "cx*" - char xdata * */
2378 /* "ui" - unsigned int */
2379 /*-----------------------------------------------------------------*/
2380 sym_link *typeFromStr (char *s)
2382 sym_link *r = newLink();
2394 r->class = SPECIFIER;
2395 SPEC_NOUN(r) = V_CHAR;
2399 r->class = SPECIFIER;
2400 SPEC_NOUN(r) = V_INT;
2403 r->class = SPECIFIER;
2404 SPEC_NOUN(r) = V_INT;
2408 r->class = SPECIFIER;
2409 SPEC_NOUN(r) = V_FLOAT;
2412 r->class = SPECIFIER;
2413 SPEC_NOUN(r) = V_VOID;
2416 DCL_TYPE(r) = port->unqualified_pointer;
2423 assert(*(s+1)=='*');
2427 r->class = DECLARATOR ;
2430 DCL_TYPE(r) = GPOINTER;
2433 DCL_TYPE(r) = FPOINTER;
2436 DCL_TYPE(r) = CPOINTER;
2439 DCL_TYPE(r) = POINTER;
2442 DCL_TYPE(r) = FUNCTION;
2446 r->class = DECLARATOR ;
2447 DCL_TYPE(r) = CPOINTER;
2453 werror(E_INTERNAL_ERROR,"typeFromStr");
2456 if (IS_SPEC(r) && usign) {
2465 /*-----------------------------------------------------------------*/
2466 /* initCSupport - create functions for C support routines */
2467 /*-----------------------------------------------------------------*/
2471 const char *smuldivmod[] =
2475 const char *sbwd[] =
2477 "char", "int", "long"
2483 const char *srlrr[] =
2488 int bwd, su, muldivmod, tofrom, rlrr;
2490 if (getenv("SDCC_NO_C_SUPPORT")) {
2491 /* for debugging only */
2495 floatType = newFloatLink ();
2497 for (bwd = 0; bwd < 3; bwd++)
2514 __multypes[bwd][0] = l;
2515 __multypes[bwd][1] = copyLinkChain (l);
2516 SPEC_USIGN (__multypes[bwd][1]) = 1;
2519 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2520 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2521 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2522 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2523 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2524 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2525 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2526 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2527 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2528 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2530 for (tofrom = 0; tofrom < 2; tofrom++)
2532 for (bwd = 0; bwd < 3; bwd++)
2534 for (su = 0; su < 2; su++)
2538 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2539 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2543 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2544 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2550 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2552 for (bwd = 0; bwd < 3; bwd++)
2554 for (su = 0; su < 2; su++)
2556 sprintf (buffer, "_%s%s%s",
2557 smuldivmod[muldivmod],
2560 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2561 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2566 for (rlrr = 0; rlrr < 2; rlrr++)
2568 for (bwd = 0; bwd < 3; bwd++)
2570 for (su = 0; su < 2; su++)
2572 sprintf (buffer, "_%s%s%s",
2576 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2577 FUNC_NONBANKED (__rlrr[rlrr][bwd][su]->type) = 1;
2583 /*-----------------------------------------------------------------*/
2584 /* initBuiltIns - create prototypes for builtin functions */
2585 /*-----------------------------------------------------------------*/
2591 if (!port->builtintable) return ;
2593 for (i = 0 ; port->builtintable[i].name ; i++) {
2594 sym = funcOfTypeVarg(port->builtintable[i].name,port->builtintable[i].rtype,
2595 port->builtintable[i].nParms,port->builtintable[i].parm_types);
2596 FUNC_ISBUILTIN(sym->type) = 1;
2597 FUNC_ISREENT(sym->type) = 0; /* can never be reentrant */