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);
1122 /* if this is not a bitfield but the */
1123 /* previous one was and did not take */
1124 /* the whole byte then pad the rest */
1125 if ((loop && !loop->bitVar) && bitOffset) {
1130 /* if union then size = sizeof larget field */
1132 usum = max (usum, sum);
1136 return (su == UNION ? usum : sum);
1139 /*------------------------------------------------------------------*/
1140 /* checkSClass - check the storage class specification */
1141 /*------------------------------------------------------------------*/
1143 checkSClass (symbol * sym, int isProto)
1145 if (getenv("DEBUG_SANITY")) {
1146 fprintf (stderr, "checkSClass: %s \n", sym->name);
1149 /* type is literal can happen foe enums change
1151 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1152 SPEC_SCLS (sym->etype) = S_AUTO;
1154 /* if sfr or sbit then must also be */
1155 /* volatile the initial value will be xlated */
1156 /* to an absolute address */
1157 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1158 SPEC_SCLS (sym->etype) == S_SFR)
1160 SPEC_VOLATILE (sym->etype) = 1;
1161 /* if initial value given */
1164 SPEC_ABSA (sym->etype) = 1;
1165 SPEC_ADDR (sym->etype) =
1166 (int) list2int (sym->ival);
1171 /* if absolute address given then it mark it as
1173 if (IS_ABSOLUTE (sym->etype))
1174 SPEC_VOLATILE (sym->etype) = 1;
1176 /* global variables declared const put into code */
1177 /* if no other storage class specified */
1178 if (sym->level == 0 &&
1179 SPEC_CONST (sym->etype) &&
1180 SPEC_SCLS(sym->etype) == S_FIXED) {
1181 SPEC_SCLS (sym->etype) = S_CODE;
1184 /* global variable in code space is a constant */
1185 if (sym->level == 0 &&
1186 SPEC_SCLS (sym->etype) == S_CODE &&
1188 SPEC_CONST (sym->etype) = 1;
1191 /* if bit variable then no storage class can be */
1192 /* specified since bit is already a storage */
1193 if (IS_BITVAR (sym->etype) &&
1194 (SPEC_SCLS (sym->etype) != S_FIXED &&
1195 SPEC_SCLS (sym->etype) != S_SBIT &&
1196 SPEC_SCLS (sym->etype) != S_BIT)
1199 werror (E_BITVAR_STORAGE, sym->name);
1200 SPEC_SCLS (sym->etype) = S_FIXED;
1203 /* extern variables cannot be initialized */
1204 if (IS_EXTERN (sym->etype) && sym->ival)
1206 werror (E_EXTERN_INIT, sym->name);
1210 /* if this is an atomatic symbol */
1211 if (sym->level && (options.stackAuto || reentrant)) {
1212 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1213 SPEC_SCLS (sym->etype) == S_FIXED ||
1214 SPEC_SCLS (sym->etype) == S_REGISTER ||
1215 SPEC_SCLS (sym->etype) == S_STACK ||
1216 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1217 SPEC_SCLS (sym->etype) = S_AUTO;
1219 /* storage class may only be specified for statics */
1220 if (!IS_STATIC(sym->etype)) {
1221 werror (E_AUTO_ASSUMED, sym->name);
1226 /* automatic symbols cannot be given */
1227 /* an absolute address ignore it */
1229 SPEC_ABSA (sym->etype) &&
1230 (options.stackAuto || reentrant))
1232 werror (E_AUTO_ABSA, sym->name);
1233 SPEC_ABSA (sym->etype) = 0;
1236 /* arrays & pointers cannot be defined for bits */
1237 /* SBITS or SFRs or BIT */
1238 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1239 (SPEC_NOUN (sym->etype) == V_BIT ||
1240 SPEC_NOUN (sym->etype) == V_SBIT ||
1241 SPEC_SCLS (sym->etype) == S_SFR))
1242 werror (E_BIT_ARRAY, sym->name);
1244 /* if this is a bit|sbit then set length & start */
1245 if (SPEC_NOUN (sym->etype) == V_BIT ||
1246 SPEC_NOUN (sym->etype) == V_SBIT)
1248 SPEC_BLEN (sym->etype) = 1;
1249 SPEC_BSTR (sym->etype) = 0;
1253 /* variables declared in CODE space must have */
1254 /* initializers if not an extern */
1255 if (SPEC_SCLS (sym->etype) == S_CODE &&
1256 sym->ival == NULL &&
1258 port->mem.code_ro &&
1259 !IS_EXTERN (sym->etype) &&
1260 !funcInChain (sym->type))
1261 werror (E_CODE_NO_INIT, sym->name);
1264 /* if parameter or local variable then change */
1265 /* the storage class to reflect where the var will go */
1266 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1267 !IS_STATIC(sym->etype))
1269 if (options.stackAuto || (currFunc && IFFUNC_ISREENT (currFunc->type)))
1271 SPEC_SCLS (sym->etype) = (options.useXstack ?
1272 S_XSTACK : S_STACK);
1276 /* hack-o-matic! I see no reason why the useXstack option should ever
1277 * control this allcoation, but the code was originally that way, and
1278 * changing it for non-390 ports breaks the compiler badly.
1280 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1281 SPEC_SCLS (sym->etype) = (useXdata ?
1287 /*------------------------------------------------------------------*/
1288 /* changePointer - change pointer to functions */
1289 /*------------------------------------------------------------------*/
1291 changePointer (symbol * sym)
1295 /* go thru the chain of declarations */
1296 /* if we find a pointer to a function */
1297 /* unconditionally change it to a ptr */
1299 for (p = sym->type; p; p = p->next)
1301 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1302 DCL_TYPE (p) = port->unqualified_pointer;
1303 if (IS_PTR (p) && IS_FUNC (p->next))
1304 DCL_TYPE (p) = CPOINTER;
1308 /*------------------------------------------------------------------*/
1309 /* checkDecl - does semantic validation of a declaration */
1310 /*------------------------------------------------------------------*/
1312 checkDecl (symbol * sym, int isProto)
1315 checkSClass (sym, isProto); /* check the storage class */
1316 changePointer (sym); /* change pointers if required */
1318 /* if this is an array without any dimension
1319 then update the dimension from the initial value */
1320 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1321 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1326 /*------------------------------------------------------------------*/
1327 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1328 /*------------------------------------------------------------------*/
1330 copyLinkChain (sym_link * p)
1332 sym_link *head, *curr, *loop;
1335 head = loop = (curr ? newLink () : (void *) NULL);
1338 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1339 loop->next = (curr->next ? newLink () : (void *) NULL);
1348 /*------------------------------------------------------------------*/
1349 /* cleanUpBlock - cleansup the symbol table specified for all the */
1350 /* symbols in the given block */
1351 /*------------------------------------------------------------------*/
1353 cleanUpBlock (bucket ** table, int block)
1358 /* go thru the entire table */
1359 for (i = 0; i < 256; i++)
1361 for (chain = table[i]; chain; chain = chain->next)
1363 if (chain->block >= block)
1365 deleteSym (table, chain->sym, chain->name);
1371 /*------------------------------------------------------------------*/
1372 /* cleanUpLevel - cleansup the symbol table specified for all the */
1373 /* symbols in the given level */
1374 /*------------------------------------------------------------------*/
1376 cleanUpLevel (bucket ** table, int level)
1381 /* go thru the entire table */
1382 for (i = 0; i < 256; i++)
1384 for (chain = table[i]; chain; chain = chain->next)
1386 if (chain->level >= level)
1388 deleteSym (table, chain->sym, chain->name);
1394 /*------------------------------------------------------------------*/
1395 /* computeType - computes the resultant type from two types */
1396 /*------------------------------------------------------------------*/
1398 computeType (sym_link * type1, sym_link * type2)
1402 sym_link *etype1 = getSpec (type1);
1403 sym_link *etype2 = getSpec (type2);
1405 /* if one of them is a float then result is a float */
1406 /* here we assume that the types passed are okay */
1407 /* and can be cast to one another */
1408 /* which ever is greater in size */
1409 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1410 rType = newFloatLink ();
1412 /* if only one of them is a bit variable
1413 then the other one prevails */
1414 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1415 rType = copyLinkChain (type2);
1416 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1417 rType = copyLinkChain (type1);
1419 /* if one of them is a pointer or array then that
1421 if (IS_PTR (type1) || IS_ARRAY (type1))
1422 rType = copyLinkChain (type1);
1423 else if (IS_PTR (type2) || IS_ARRAY (type2))
1424 rType = copyLinkChain (type2);
1425 else if (getSize (type1) > getSize (type2))
1426 rType = copyLinkChain (type1);
1428 rType = copyLinkChain (type2);
1430 reType = getSpec (rType);
1432 /* if either of them unsigned but not val then make this unsigned */
1433 if (((!IS_LITERAL(type1) && SPEC_USIGN (etype1)) ||
1434 (!IS_LITERAL(type2) && SPEC_USIGN (etype2))) &&
1436 SPEC_USIGN (reType) = 1;
1438 SPEC_USIGN (reType) = 0;
1440 /* if result is a literal then make not so */
1441 if (IS_LITERAL (reType))
1442 SPEC_SCLS (reType) = S_REGISTER;
1447 /*--------------------------------------------------------------------*/
1448 /* compareType - will do type check return 1 if match, -1 if castable */
1449 /*--------------------------------------------------------------------*/
1451 compareType (sym_link * dest, sym_link * src)
1462 /* if dest is a declarator then */
1467 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1469 //checkFunction(src,dest);
1471 return compareType (dest->next, src->next);
1473 if (IS_PTR (src) && IS_GENPTR (dest))
1475 if (IS_PTR (dest) && IS_ARRAY (src)) {
1476 value *val=aggregateToPointer (valFromType(src));
1477 int res=compareType (dest, val->type);
1478 Safe_free(val->type);
1480 //return res ? -1 : 0;
1483 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1484 return compareType (dest->next, src);
1487 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1493 /* if one is a specifier and the other is not */
1494 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1495 (IS_SPEC (dest) && !IS_SPEC (src)))
1498 /* if one of them is a void then ok */
1499 if (SPEC_NOUN (dest) == V_VOID &&
1500 SPEC_NOUN (src) != V_VOID)
1503 if (SPEC_NOUN (dest) != V_VOID &&
1504 SPEC_NOUN (src) == V_VOID)
1507 /* if they are both bitfields then if the lengths
1508 and starts don't match */
1509 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1510 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1511 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1514 /* it is a specifier */
1515 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1517 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1518 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1519 getSize (dest) == getSize (src))
1521 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1526 else if (IS_STRUCT (dest))
1528 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1533 if (SPEC_LONG (dest) != SPEC_LONG (src))
1536 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1542 /*------------------------------------------------------------------*/
1543 /* inCalleeSaveList - return 1 if found in callee save list */
1544 /*------------------------------------------------------------------*/
1546 inCalleeSaveList (char *s)
1550 if (options.all_callee_saves) return 1;
1551 for (i = 0; options.calleeSaves[i]; i++)
1552 if (strcmp (options.calleeSaves[i], s) == 0)
1558 /*-----------------------------------------------------------------*/
1559 /* aggregateToPointer: change an agggregate type function */
1560 /* argument to a pointer to that type. */
1561 /*-----------------------------------------------------------------*/
1563 aggregateToPointer (value * val)
1565 if (IS_AGGREGATE (val->type))
1567 /* if this is a structure */
1568 /* then we need to add a new link */
1569 if (IS_STRUCT (val->type))
1571 /* first lets add DECLARATOR type */
1572 sym_link *p = val->type;
1574 werror (W_STRUCT_AS_ARG, val->name);
1575 val->type = newLink ();
1576 val->type->next = p;
1579 /* change to a pointer depending on the */
1580 /* storage class specified */
1581 switch (SPEC_SCLS (val->etype))
1584 DCL_TYPE (val->type) = IPOINTER;
1587 DCL_TYPE (val->type) = PPOINTER;
1590 if (SPEC_OCLS(val->etype)) {
1591 DCL_TYPE(val->type)=PTR_TYPE(SPEC_OCLS(val->etype));
1594 // this happens for (external) function parameters
1595 DCL_TYPE (val->type) = port->unqualified_pointer;
1597 if (TARGET_IS_DS390) {
1598 /* The AUTO and REGISTER classes should probably
1599 * also become generic pointers, but I haven't yet
1600 * devised a test case for that.
1602 DCL_TYPE (val->type) = port->unqualified_pointer;
1605 if (options.model==MODEL_LARGE) {
1606 DCL_TYPE (val->type) = FPOINTER;
1615 DCL_TYPE (val->type) = POINTER;
1618 DCL_TYPE (val->type) = CPOINTER;
1621 DCL_TYPE (val->type) = FPOINTER;
1624 DCL_TYPE (val->type) = EEPPOINTER;
1627 DCL_TYPE (val->type) = port->unqualified_pointer;
1630 /* is there is a symbol associated then */
1631 /* change the type of the symbol as well */
1634 val->sym->type = copyLinkChain (val->type);
1635 val->sym->etype = getSpec (val->sym->type);
1640 /*------------------------------------------------------------------*/
1641 /* checkFunction - does all kinds of check on a function */
1642 /*------------------------------------------------------------------*/
1644 checkFunction (symbol * sym, symbol *csym)
1646 value *exargs, *acargs;
1650 if (getenv("DEBUG_SANITY")) {
1651 fprintf (stderr, "checkFunction: %s ", sym->name);
1654 /* make sure the type is complete and sane */
1655 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1657 /* if not type then some kind of error */
1661 /* if the function has no type then make it return int */
1662 if (!sym->type->next)
1663 sym->type->next = sym->etype = newIntLink ();
1665 /* function cannot return aggregate */
1666 if (IS_AGGREGATE (sym->type->next))
1668 werror (E_FUNC_AGGR, sym->name);
1672 /* function cannot return bit */
1673 if (IS_BITVAR (sym->type->next))
1675 werror (E_FUNC_BIT, sym->name);
1679 /* check if this function is defined as calleeSaves
1680 then mark it as such */
1681 FUNC_CALLEESAVES(sym->type) = inCalleeSaveList (sym->name);
1683 /* if interrupt service routine */
1684 /* then it cannot have arguments */
1685 if (IFFUNC_ARGS(sym->type) && FUNC_ISISR (sym->type))
1687 if (!IS_VOID(FUNC_ARGS(sym->type)->type)) {
1688 werror (E_INT_ARGS, sym->name);
1689 FUNC_ARGS(sym->type)=NULL;
1693 for (argCnt=1, acargs = FUNC_ARGS(sym->type);
1695 acargs=acargs->next, argCnt++) {
1697 // this can happen for reentrant functions
1698 werror(E_PARAM_NAME_OMITTED, sym->name, argCnt);
1699 // the show must go on: synthesize a name and symbol
1700 sprintf (acargs->name, "_%s_PARM_%d", sym->name, argCnt);
1701 acargs->sym = newSymbol (acargs->name, 1);
1702 SPEC_OCLS (acargs->etype) = istack;
1703 acargs->sym->type = copyLinkChain (acargs->type);
1704 acargs->sym->etype = getSpec (acargs->sym->type);
1705 acargs->sym->_isparm = 1;
1706 strcpy (acargs->sym->rname, acargs->name);
1707 } else if (strcmp(acargs->sym->name, acargs->sym->rname)==0) {
1709 werror(E_PARAM_NAME_OMITTED, sym->name, argCnt);
1713 if (!csym && !(csym = findSym (SymbolTab, sym, sym->name)))
1714 return 1; /* not defined nothing more to check */
1716 /* check if body already present */
1717 if (csym && IFFUNC_HASBODY(csym->type))
1719 werror (E_FUNC_BODY, sym->name);
1723 /* check the return value type */
1724 if (compareType (csym->type, sym->type) <= 0)
1726 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1727 printFromToType(csym->type, sym->type);
1731 if (FUNC_ISISR (csym->type) != FUNC_ISISR (sym->type))
1733 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1736 if (FUNC_REGBANK (csym->type) != FUNC_REGBANK (sym->type))
1738 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1741 if (IFFUNC_ISNAKED (csym->type) != IFFUNC_ISNAKED (sym->type))
1743 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1746 /* compare expected args with actual args */
1747 exargs = FUNC_ARGS(csym->type);
1748 acargs = FUNC_ARGS(sym->type);
1750 /* for all the expected args do */
1753 exargs = exargs->next, acargs = acargs->next, argCnt++)
1755 if (getenv("DEBUG_SANITY")) {
1756 fprintf (stderr, "checkFunction: %s ", exargs->name);
1758 /* make sure the type is complete and sane */
1759 checkTypeSanity(exargs->etype, exargs->name);
1761 /* If the actual argument is an array, any prototype
1762 * will have modified it to a pointer. Duplicate that
1765 if (IS_AGGREGATE (acargs->type))
1767 checkValue = copyValue (acargs);
1768 aggregateToPointer (checkValue);
1772 checkValue = acargs;
1775 if (compareType (exargs->type, checkValue->type) <= 0)
1777 werror (E_ARG_TYPE, argCnt);
1778 printFromToType(exargs->type, checkValue->type);
1783 /* if one them ended we have a problem */
1784 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1785 (!exargs && acargs && !IS_VOID (acargs->type)))
1786 werror (E_ARG_COUNT);
1788 /* replace with this defition */
1789 sym->cdef = csym->cdef;
1790 deleteSym (SymbolTab, csym, csym->name);
1791 deleteFromSeg(csym);
1792 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1793 if (IS_EXTERN (csym->etype) && !
1794 IS_EXTERN (sym->etype))
1796 addSet (&publics, sym);
1801 /*-----------------------------------------------------------------*/
1802 /* processFuncArgs - does some processing with function args */
1803 /*-----------------------------------------------------------------*/
1805 processFuncArgs (symbol * func)
1809 sym_link *funcType=func->type;
1811 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
1812 fprintf (stderr, "SDCCsymt.c:processFuncArgs(%s)\n", func->name);
1814 // if this is a pointer to a function
1815 if (IS_PTR(funcType)) {
1816 funcType=funcType->next;
1819 /* if this function has variable argument list */
1820 /* then make the function a reentrant one */
1821 if (IFFUNC_HASVARARGS(funcType) || (options.stackAuto && !func->cdef))
1822 FUNC_ISREENT(funcType)=1;
1824 /* check if this function is defined as calleeSaves
1825 then mark it as such */
1826 FUNC_CALLEESAVES(funcType) = inCalleeSaveList (func->name);
1828 /* loop thru all the arguments */
1829 val = FUNC_ARGS(funcType);
1831 /* if it is void then remove parameters */
1832 if (val && IS_VOID (val->type))
1834 FUNC_ARGS(funcType) = NULL;
1838 /* reset regparm for the port */
1839 (*port->reset_regparms) ();
1840 /* if any of the arguments is an aggregate */
1841 /* change it to pointer to the same type */
1844 /* mark it as a register parameter if
1845 the function does not have VA_ARG
1846 and as port dictates */
1847 if (!IFFUNC_HASVARARGS(funcType) &&
1848 (*port->reg_parm) (val->type))
1850 SPEC_REGPARM (val->etype) = 1;
1851 } else if (IFFUNC_ISREENT(funcType)) {
1852 FUNC_HASSTACKPARM(funcType) = 1;
1855 if (IS_AGGREGATE (val->type))
1857 aggregateToPointer (val);
1864 /* if this is an internal generated function call */
1866 /* ignore --stack-auto for this one, we don't know how it is compiled */
1867 /* simply trust on --int-long-reent or --float-reent */
1868 if (IFFUNC_ISREENT(funcType)) {
1872 /* if this function is reentrant or */
1873 /* automatics r 2b stacked then nothing */
1874 if (IFFUNC_ISREENT (funcType) || options.stackAuto)
1878 val = FUNC_ARGS(funcType);
1883 /* if a symbolname is not given */
1884 /* synthesize a variable name */
1887 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1888 val->sym = newSymbol (val->name, 1);
1889 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1890 val->sym->type = copyLinkChain (val->type);
1891 val->sym->etype = getSpec (val->sym->type);
1892 val->sym->_isparm = 1;
1893 strcpy (val->sym->rname, val->name);
1894 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1895 SPEC_STAT (func->etype);
1896 addSymChain (val->sym);
1899 else /* symbol name given create synth name */
1902 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1903 strcpy (val->sym->rname, val->name);
1904 val->sym->_isparm = 1;
1905 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1906 (options.model != MODEL_SMALL ? xdata : data);
1907 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1908 SPEC_STAT (func->etype);
1914 /*-----------------------------------------------------------------*/
1915 /* isSymbolEqual - compares two symbols return 1 if they match */
1916 /*-----------------------------------------------------------------*/
1918 isSymbolEqual (symbol * dest, symbol * src)
1920 /* if pointers match then equal */
1924 /* if one of them is null then don't match */
1928 /* if both of them have rname match on rname */
1929 if (dest->rname[0] && src->rname[0])
1930 return (!strcmp (dest->rname, src->rname));
1932 /* otherwise match on name */
1933 return (!strcmp (dest->name, src->name));
1936 void PT(sym_link *type)
1938 printTypeChain(type,0);
1940 /*-----------------------------------------------------------------*/
1941 /* printTypeChain - prints the type chain in human readable form */
1942 /*-----------------------------------------------------------------*/
1944 printTypeChain (sym_link * start, FILE * of)
1947 sym_link * type, * search;
1956 fprintf (of, "void");
1960 /* print the chain as it is written in the source: */
1961 /* start with the last entry */
1962 for (type = start; type && type->next; type = type->next)
1968 if (DCL_PTR_VOLATILE (type)) {
1969 fprintf (of, "volatile ");
1971 switch (DCL_TYPE (type))
1974 fprintf (of, "function %s %s",
1975 (IFFUNC_ISBUILTIN(type) ? "__builtin__" : " "),
1976 (IFFUNC_ISJAVANATIVE(type) ? "_JavaNative" : " "));
1979 if (DCL_PTR_CONST (type))
1980 fprintf (of, "const ");
1981 fprintf (of, "generic * ");
1984 if (DCL_PTR_CONST (type))
1985 fprintf (of, "const ");
1986 fprintf (of, "code * ");
1989 if (DCL_PTR_CONST (type))
1990 fprintf (of, "const ");
1991 fprintf (of, "xdata * ");
1994 if (DCL_PTR_CONST (type))
1995 fprintf (of, "const ");
1996 fprintf (of, "eeprom * ");
2000 if (DCL_PTR_CONST (type))
2001 fprintf (of, "const ");
2002 fprintf (of, "near *");
2005 if (DCL_PTR_CONST (type))
2006 fprintf (of, "const ");
2007 fprintf (of, "idata * ");
2010 if (DCL_PTR_CONST (type))
2011 fprintf (of, "const ");
2012 fprintf (of, "pdata * ");
2015 if (DCL_PTR_CONST (type))
2016 fprintf (of, "const ");
2017 fprintf (of, "unkown * ");
2020 fprintf (of, "[] ");
2026 switch (SPEC_SCLS(type))
2028 case S_DATA: fprintf (of, "data "); break;
2029 case S_XDATA: fprintf (of, "xdata "); break;
2030 case S_SFR: fprintf (of, "sfr "); break;
2031 case S_SBIT: fprintf (of, "sbit "); break;
2032 case S_CODE: fprintf (of, "code "); break;
2033 case S_IDATA: fprintf (of, "idata "); break;
2034 case S_PDATA: fprintf (of, "pdata "); break;
2035 case S_LITERAL: fprintf (of, "literal "); break;
2036 case S_STACK: fprintf (of, "stack "); break;
2037 case S_XSTACK: fprintf (of, "xstack "); break;
2038 case S_BIT: fprintf (of, "bit "); break;
2039 case S_EEPROM: fprintf (of, "eeprom "); break;
2043 if (SPEC_VOLATILE (type))
2044 fprintf (of, "volatile ");
2045 if (SPEC_USIGN (type))
2046 fprintf (of, "unsigned ");
2047 if (SPEC_CONST (type))
2048 fprintf (of, "const ");
2050 switch (SPEC_NOUN (type))
2054 fprintf (of, "long ");
2055 fprintf (of, "int");
2059 fprintf (of, "char");
2063 fprintf (of, "void");
2067 fprintf (of, "float");
2071 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2075 fprintf (of, "sbit");
2079 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2083 fprintf (of, "double");
2087 fprintf (of, "unknown type");
2091 /* search entry in list before "type" */
2092 for (search = start; search && search->next != type;)
2093 search = search->next;
2102 /*-----------------------------------------------------------------*/
2103 /* cdbTypeInfo - print the type information for debugger */
2104 /*-----------------------------------------------------------------*/
2106 cdbTypeInfo (sym_link * type, FILE * of)
2108 fprintf (of, "{%d}", getSize (type));
2113 switch (DCL_TYPE (type))
2116 fprintf (of, "DF,");
2119 fprintf (of, "DG,");
2122 fprintf (of, "DC,");
2125 fprintf (of, "DX,");
2128 fprintf (of, "DD,");
2131 fprintf (of, "DI,");
2134 fprintf (of, "DP,");
2137 fprintf (of, "DA,");
2140 fprintf (of, "DA%d,", DCL_ELEM (type));
2148 switch (SPEC_NOUN (type))
2170 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2178 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2185 if (SPEC_USIGN (type))
2193 /*-----------------------------------------------------------------*/
2194 /* cdbSymbol - prints a symbol & its type information for debugger */
2195 /*-----------------------------------------------------------------*/
2197 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2209 fprintf (of, "S:"); /* symbol record */
2210 /* if this is not a structure symbol then
2211 we need to figure out the scope information */
2217 if (IS_STATIC (sym->etype))
2218 fprintf (of, "F%s$", moduleName); /* scope is file */
2220 fprintf (of, "G$"); /* scope is global */
2223 /* symbol is local */
2224 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2227 fprintf (of, "S$"); /* scope is structure */
2229 /* print the name, & mangled name */
2230 fprintf (of, "%s$%d$%d(", sym->name,
2231 sym->level, sym->block);
2233 cdbTypeInfo (sym->type, of);
2236 /* print the address space */
2237 map = SPEC_OCLS (sym->etype);
2238 fprintf (of, "%c,%d,%d",
2239 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2241 /* if assigned to registers then output register names */
2242 /* if this is a function then print
2243 if is it an interrupt routine & interrupt number
2244 and the register bank it is using */
2246 fprintf (of, ",%d,%d,%d", FUNC_ISISR (sym->type),
2247 FUNC_INTNO (sym->type), FUNC_REGBANK (sym->type));
2248 /* alternate location to find this symbol @ : eg registers
2255 /*-----------------------------------------------------------------*/
2256 /* cdbStruct - print a structure for debugger */
2257 /*-----------------------------------------------------------------*/
2259 cdbStruct (structdef * sdef, int block, FILE * of,
2260 int inStruct, char *tag)
2265 /* if block # then must have function scope */
2266 fprintf (of, "F%s$", moduleName);
2267 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2268 for (sym = sdef->fields; sym; sym = sym->next)
2270 fprintf (of, "({%d}", sym->offset);
2271 cdbSymbol (sym, of, TRUE, FALSE);
2279 /*------------------------------------------------------------------*/
2280 /* cdbStructBlock - calls struct printing for a blcks */
2281 /*------------------------------------------------------------------*/
2283 cdbStructBlock (int block, FILE * of)
2286 bucket **table = StructTab;
2290 /* go thru the entire table */
2291 for (i = 0; i < 256; i++)
2293 for (chain = table[i]; chain; chain = chain->next)
2295 if (chain->block >= block)
2297 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2303 /*-----------------------------------------------------------------*/
2304 /* powof2 - returns power of two for the number if number is pow 2 */
2305 /*-----------------------------------------------------------------*/
2307 powof2 (unsigned long num)
2320 if (n1s > 1 || nshifts == 0)
2336 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2337 symbol *__muldiv[3][3][2];
2338 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2339 sym_link *__multypes[3][2];
2340 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2341 symbol *__conv[2][3][2];
2342 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2343 symbol *__rlrr[2][3][2];
2345 sym_link *floatType;
2348 _mangleFunctionName(char *in)
2350 if (port->getMangledFunctionName)
2352 return port->getMangledFunctionName(in);
2360 /*-----------------------------------------------------------------*/
2361 /* typeFromStr - create a typechain from an encoded string */
2362 /* basic types - 'c' - char */
2368 /* '*' - pointer - default (GPOINTER) */
2369 /* modifiers - 'u' - unsigned */
2370 /* pointer modifiers - 'g' - generic */
2374 /* 'F' - function */
2375 /* examples : "ig*" - generic int * */
2376 /* "cx*" - char xdata * */
2377 /* "ui" - unsigned int */
2378 /*-----------------------------------------------------------------*/
2379 sym_link *typeFromStr (char *s)
2381 sym_link *r = newLink();
2393 r->class = SPECIFIER;
2394 SPEC_NOUN(r) = V_CHAR;
2398 r->class = SPECIFIER;
2399 SPEC_NOUN(r) = V_INT;
2402 r->class = SPECIFIER;
2403 SPEC_NOUN(r) = V_INT;
2407 r->class = SPECIFIER;
2408 SPEC_NOUN(r) = V_FLOAT;
2411 r->class = SPECIFIER;
2412 SPEC_NOUN(r) = V_VOID;
2415 DCL_TYPE(r) = port->unqualified_pointer;
2422 assert(*(s+1)=='*');
2426 r->class = DECLARATOR ;
2429 DCL_TYPE(r) = GPOINTER;
2432 DCL_TYPE(r) = FPOINTER;
2435 DCL_TYPE(r) = CPOINTER;
2438 DCL_TYPE(r) = POINTER;
2441 DCL_TYPE(r) = FUNCTION;
2445 r->class = DECLARATOR ;
2446 DCL_TYPE(r) = CPOINTER;
2452 werror(E_INTERNAL_ERROR,"typeFromStr");
2455 if (IS_SPEC(r) && usign) {
2464 /*-----------------------------------------------------------------*/
2465 /* initCSupport - create functions for C support routines */
2466 /*-----------------------------------------------------------------*/
2470 const char *smuldivmod[] =
2474 const char *sbwd[] =
2476 "char", "int", "long"
2482 const char *srlrr[] =
2487 int bwd, su, muldivmod, tofrom, rlrr;
2489 if (getenv("SDCC_NO_C_SUPPORT")) {
2490 /* for debugging only */
2494 floatType = newFloatLink ();
2496 for (bwd = 0; bwd < 3; bwd++)
2513 __multypes[bwd][0] = l;
2514 __multypes[bwd][1] = copyLinkChain (l);
2515 SPEC_USIGN (__multypes[bwd][1]) = 1;
2518 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2519 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2520 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2521 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2522 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2523 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2524 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2525 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2526 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2527 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2529 for (tofrom = 0; tofrom < 2; tofrom++)
2531 for (bwd = 0; bwd < 3; bwd++)
2533 for (su = 0; su < 2; su++)
2537 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2538 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2542 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2543 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2549 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2551 for (bwd = 0; bwd < 3; bwd++)
2553 for (su = 0; su < 2; su++)
2555 sprintf (buffer, "_%s%s%s",
2556 smuldivmod[muldivmod],
2559 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2560 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2565 for (rlrr = 0; rlrr < 2; rlrr++)
2567 for (bwd = 0; bwd < 3; bwd++)
2569 for (su = 0; su < 2; su++)
2571 sprintf (buffer, "_%s%s%s",
2575 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2576 FUNC_NONBANKED (__rlrr[rlrr][bwd][su]->type) = 1;
2582 /*-----------------------------------------------------------------*/
2583 /* initBuiltIns - create prototypes for builtin functions */
2584 /*-----------------------------------------------------------------*/
2590 if (!port->builtintable) return ;
2592 for (i = 0 ; port->builtintable[i].name ; i++) {
2593 sym = funcOfTypeVarg(port->builtintable[i].name,port->builtintable[i].rtype,
2594 port->builtintable[i].nParms,port->builtintable[i].parm_types);
2595 FUNC_ISBUILTIN(sym->type) = 1;
2596 FUNC_ISREENT(sym->type) = 0; /* can never be reentrant */