1 /*-------------------------------------------------------------------------
2 SDCCsymt.c - Code file for Symbols table related structures and MACRO's.
3 Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU General Public License as published by the
7 Free Software Foundation; either version 2, or (at your option) any
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 In other words, you are welcome to use, share and improve this program.
20 You are forbidden to forbid anyone else to use, share and improve
21 what you give them. Help stamp out software-hoarding!
22 -------------------------------------------------------------------------*/
27 value *aggregateToPointer (value *val);
29 void printFromToType(sym_link *from, sym_link *to) {
30 fprintf (stderr, "from type '");
31 printTypeChain (from, stderr);
32 fprintf (stderr, "'\nto type '");
33 printTypeChain (to, stderr);
34 fprintf (stderr, "'\n");
38 char *nounName(sym_link *sl) {
39 switch (SPEC_NOUN(sl))
42 if (SPEC_LONG(sl)) return "long";
43 if (sl->select.s._short) return "short";
46 case V_FLOAT: return "float";
47 case V_CHAR: return "char";
48 case V_VOID: return "void";
49 case V_STRUCT: return "struct";
50 case V_LABEL: return "label";
51 case V_BIT: return "bit";
52 case V_SBIT: return "sbit";
53 case V_DOUBLE: return "double";
58 bucket *SymbolTab[256]; /* the symbol table */
59 bucket *StructTab[256]; /* the structure table */
60 bucket *TypedefTab[256]; /* the typedef table */
61 bucket *LabelTab[256]; /* the Label table */
62 bucket *enumTab[256]; /* enumerated table */
64 /*------------------------------------------------------------------*/
65 /* initSymt () - initialises symbol table related stuff */
66 /*------------------------------------------------------------------*/
72 for (i = 0; i < 256; i++)
73 SymbolTab[i] = StructTab[i] = (void *) NULL;
77 /*-----------------------------------------------------------------*/
78 /* newBucket - allocates & returns a new bucket */
79 /*-----------------------------------------------------------------*/
85 bp = Safe_alloc ( sizeof (bucket));
90 /*-----------------------------------------------------------------*/
91 /* hashKey - computes the hashkey given a symbol name */
92 /*-----------------------------------------------------------------*/
94 hashKey (const char *s)
96 unsigned long key = 0;
103 /*-----------------------------------------------------------------*/
104 /* addSym - adds a symbol to the hash Table */
105 /*-----------------------------------------------------------------*/
107 addSym (bucket ** stab,
114 int i; /* index into the hash Table */
115 bucket *bp; /* temp bucket * */
118 symbol *csym = (symbol *)sym;
120 if (getenv("DEBUG_SANITY")) {
121 fprintf (stderr, "addSym: %s ", sname);
123 /* make sure the type is complete and sane */
124 checkTypeSanity(csym->etype, csym->name);
127 /* prevent overflow of the (r)name buffers */
128 if (strlen(sname)>SDCC_SYMNAME_MAX) {
129 werror (W_SYMBOL_NAME_TOO_LONG, SDCC_SYMNAME_MAX);
130 sname[SDCC_SYMNAME_MAX]='\0';
133 /* the symbols are always added at the head of the list */
135 /* get a free entry */
136 bp = Safe_alloc ( sizeof (bucket));
138 bp->sym = sym; /* update the symbol pointer */
139 bp->level = level; /* update the nest level */
141 strcpy (bp->name, sname); /* copy the name into place */
143 /* if this is the first entry */
146 bp->prev = bp->next = (void *) NULL; /* point to nothing */
149 /* not first entry then add @ head of list */
159 /*-----------------------------------------------------------------*/
160 /* deleteSym - deletes a symbol from the hash Table entry */
161 /*-----------------------------------------------------------------*/
163 deleteSym (bucket ** stab, void *sym, char *sname)
171 /* find the symbol */
174 if (bp->sym == sym) /* found it then break out */
175 break; /* of the loop */
179 if (!bp) /* did not find it */
181 /* if this is the first one in the chain */
185 if (stab[i]) /* if chain ! empty */
186 stab[i]->prev = (void *) NULL;
188 /* middle || end of chain */
191 if (bp->next) /* if not end of chain */
192 bp->next->prev = bp->prev;
194 bp->prev->next = bp->next;
199 /*-----------------------------------------------------------------*/
200 /* findSym - finds a symbol in a table */
201 /*-----------------------------------------------------------------*/
203 findSym (bucket ** stab, void *sym, const char *sname)
207 bp = stab[hashKey (sname)];
210 if (bp->sym == sym || strcmp (bp->name, sname) == 0)
215 return (bp ? bp->sym : (void *) NULL);
218 /*-----------------------------------------------------------------*/
219 /* findSymWithLevel - finds a symbol with a name & level */
220 /*-----------------------------------------------------------------*/
222 findSymWithLevel (bucket ** stab, symbol * sym)
226 bp = stab[hashKey (sym->name)];
229 ** do the search from the head of the list since the
230 ** elements are added at the head it is ensured that
231 ** we will find the deeper definitions before we find
232 ** the global ones. we need to check for symbols with
233 ** level <= to the level given, if levels match then block
234 ** numbers need to match as well
238 if (strcmp (bp->name, sym->name) == 0 && bp->level <= sym->level)
240 /* if this is parameter then nothing else need to be checked */
241 if (((symbol *) (bp->sym))->_isparm)
243 /* if levels match then block numbers should also match */
244 if (bp->level && bp->level == sym->level && bp->block == sym->block)
246 /* if levels don't match then we are okay */
247 if (bp->level && bp->level != sym->level && bp->block <= sym->block)
249 /* if this is a global variable then we are ok too */
257 return (void *) NULL;
260 /*-----------------------------------------------------------------*/
261 /* findSymWithBlock - finds a symbol with name in with a block */
262 /*-----------------------------------------------------------------*/
264 findSymWithBlock (bucket ** stab, symbol * sym, int block)
268 bp = stab[hashKey (sym->name)];
271 if (strcmp (bp->name, sym->name) == 0 &&
277 return (bp ? bp->sym : (void *) NULL);
280 /*------------------------------------------------------------------*/
281 /* newSymbol () - returns a new pointer to a symbol */
282 /*------------------------------------------------------------------*/
284 newSymbol (char *name, int scope)
288 sym = Safe_alloc ( sizeof (symbol));
290 strcpy (sym->name, name); /* copy the name */
291 sym->level = scope; /* set the level */
292 sym->block = currBlockno;
293 sym->lineDef = yylineno; /* set the line number */
297 /*------------------------------------------------------------------*/
298 /* newLink - creates a new link (declarator,specifier) */
299 /*------------------------------------------------------------------*/
305 p = Safe_alloc ( sizeof (sym_link));
310 /*------------------------------------------------------------------*/
311 /* newStruct - creats a new structdef from the free list */
312 /*------------------------------------------------------------------*/
314 newStruct (char *tag)
318 s = Safe_alloc ( sizeof (structdef));
320 strcpy (s->tag, tag); /* copy the tag */
324 /*------------------------------------------------------------------*/
325 /* pointerTypes - do the computation for the pointer types */
326 /*------------------------------------------------------------------*/
328 pointerTypes (sym_link * ptr, sym_link * type)
333 /* find the first pointer type */
334 while (ptr && !IS_PTR (ptr))
337 /* could not find it */
338 if (!ptr || IS_SPEC (ptr))
341 if (IS_PTR(ptr) && DCL_TYPE(ptr)!=UPOINTER) {
342 pointerTypes (ptr->next, type);
346 /* change the pointer type depending on the
347 storage class of the type */
350 DCL_PTR_CONST (ptr) = SPEC_CONST (type);
351 DCL_PTR_VOLATILE (ptr) = SPEC_VOLATILE (type);
352 switch (SPEC_SCLS (type))
355 DCL_TYPE (ptr) = FPOINTER;
358 DCL_TYPE (ptr) = IPOINTER;
361 DCL_TYPE (ptr) = PPOINTER;
364 DCL_TYPE (ptr) = POINTER;
367 DCL_PTR_CONST (ptr) = port->mem.code_ro;
368 DCL_TYPE (ptr) = CPOINTER;
371 DCL_TYPE (ptr) = EEPPOINTER;
374 DCL_TYPE (ptr) = GPOINTER;
377 /* the storage class of type ends here */
380 SPEC_VOLATILE (type) = 0;
383 /* now change all the remaining unknown pointers
384 to generic pointers */
387 if (!IS_SPEC (ptr) && DCL_TYPE (ptr) == UPOINTER)
388 DCL_TYPE (ptr) = GPOINTER;
392 /* same for the type although it is highly unlikely that
393 type will have a pointer */
396 if (!IS_SPEC (type) && DCL_TYPE (type) == UPOINTER)
397 DCL_TYPE (type) = GPOINTER;
403 /*------------------------------------------------------------------*/
404 /* addDecl - adds a declarator @ the end of a chain */
405 /*------------------------------------------------------------------*/
407 addDecl (symbol * sym, int type, sym_link * p)
413 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
414 fprintf (stderr, "SDCCsymt.c:addDecl(%s,%d,%p)\n", sym->name, type, p);
416 /* if we are passed a link then set head & tail */
425 head = tail = newLink ();
426 DCL_TYPE (head) = type;
429 /* if this is the first entry */
437 if (IS_SPEC (sym->etype) && IS_SPEC (head) && head == tail)
439 sym->etype = mergeSpec (sym->etype, head, sym->name);
443 if (IS_SPEC (sym->etype) && !IS_SPEC (head) && head == tail)
446 while (t->next != sym->etype)
449 tail->next = sym->etype;
453 sym->etype->next = head;
459 /* if the type is an unknown pointer and has
460 a tspec then take the storage class const & volatile
461 attribute from the tspec & make it those of this
465 //DCL_TYPE (p) == UPOINTER &&
468 if (!IS_SPEC (sym->etype))
470 sym->etype = sym->etype->next = newLink ();
471 sym->etype->class = SPECIFIER;
473 SPEC_SCLS (sym->etype) = SPEC_SCLS (DCL_TSPEC (p));
474 SPEC_CONST (sym->etype) = SPEC_CONST (DCL_TSPEC (p));
475 SPEC_VOLATILE (sym->etype) = SPEC_VOLATILE (DCL_TSPEC (p));
476 DCL_TSPEC (p) = NULL;
479 // if there is a function in this type chain
480 if (p && funcInChain(sym->type)) {
481 processFuncArgs (sym);
487 /*------------------------------------------------------------------
488 checkTypeSanity: prevent the user from doing e.g.:
490 ------------------------------------------------------------------*/
491 void checkTypeSanity(sym_link *etype, char *name) {
495 if (getenv("DEBUG_SANITY")) {
496 fprintf (stderr, "sanity check skipped for %s (etype==0)\n", name);
501 if (!IS_SPEC(etype)) {
502 if (getenv("DEBUG_SANITY")) {
503 fprintf (stderr, "sanity check skipped for %s (!IS_SPEC)\n", name);
508 noun=nounName(etype);
510 if (getenv("DEBUG_SANITY")) {
511 fprintf (stderr, "checking sanity for %s %x\n", name, (int)etype);
514 if ((SPEC_NOUN(etype)==V_CHAR ||
515 SPEC_NOUN(etype)==V_FLOAT ||
516 SPEC_NOUN(etype)==V_DOUBLE ||
517 SPEC_NOUN(etype)==V_VOID) &&
518 (etype->select.s._short || SPEC_LONG(etype))) {
519 // long or short for char float double or void
520 werror (E_LONG_OR_SHORT_INVALID, noun, name);
522 if ((SPEC_NOUN(etype)==V_FLOAT ||
523 SPEC_NOUN(etype)==V_DOUBLE ||
524 SPEC_NOUN(etype)==V_VOID) &&
525 (etype->select.s._signed || SPEC_USIGN(etype))) {
526 // signed or unsigned for float double or void
527 werror (E_SIGNED_OR_UNSIGNED_INVALID, noun, name);
530 // special case for "short"
531 if (etype->select.s._short) {
532 SPEC_NOUN(etype) = options.shortis8bits ? V_CHAR : V_INT;
533 etype->select.s._short = 0;
537 "const a;" or "data b;" or "signed s" or "long l"
539 if (!SPEC_NOUN(etype)) {
540 SPEC_NOUN(etype)=V_INT;
543 if (etype->select.s._signed && SPEC_USIGN(etype)) {
544 // signed AND unsigned
545 werror (E_SIGNED_AND_UNSIGNED_INVALID, noun, name);
547 if (etype->select.s._short && SPEC_LONG(etype)) {
549 werror (E_LONG_AND_SHORT_INVALID, noun, name);
554 /*------------------------------------------------------------------*/
555 /* mergeSpec - merges two specifiers and returns the new one */
556 /*------------------------------------------------------------------*/
558 mergeSpec (sym_link * dest, sym_link * src, char *name)
560 sym_link *symlink=dest;
562 if (!IS_SPEC(dest) || !IS_SPEC(src)) {
564 werror (E_INTERNAL_ERROR, __FILE__, __LINE__, "cannot merge declarator");
567 werror (E_SYNTAX_ERROR, yytext);
568 // the show must go on
573 if (SPEC_NOUN(src)) {
574 if (!SPEC_NOUN(dest)) {
575 SPEC_NOUN(dest)=SPEC_NOUN(src);
577 /* we shouldn't redeclare the type */
578 if (getenv("DEBUG_SANITY")) {
579 fprintf (stderr, "mergeSpec: ");
581 werror(E_TWO_OR_MORE_DATA_TYPES, name);
585 if (SPEC_SCLS(src)) {
586 /* if destination has no storage class */
587 if (!SPEC_SCLS (dest) || SPEC_SCLS(dest)==S_REGISTER) {
588 SPEC_SCLS (dest) = SPEC_SCLS (src);
590 if (getenv("DEBUG_SANITY")) {
591 fprintf (stderr, "mergeSpec: ");
593 werror(E_TWO_OR_MORE_STORAGE_CLASSES, name);
597 /* copy all the specifications */
599 // we really should do:
601 if (SPEC_what(src)) {
602 if (SPEC_what(dest)) {
603 werror(W_DUPLICATE_SPEC, "what");
605 SPEC_what(dst)|=SPEC_what(src);
608 // but there are more important thing right now
610 SPEC_LONG (dest) |= SPEC_LONG (src);
611 dest->select.s._short|=src->select.s._short;
612 SPEC_USIGN (dest) |= SPEC_USIGN (src);
613 dest->select.s._signed|=src->select.s._signed;
614 SPEC_STAT (dest) |= SPEC_STAT (src);
615 SPEC_EXTR (dest) |= SPEC_EXTR (src);
616 SPEC_CONST(dest) |= SPEC_CONST (src);
617 SPEC_ABSA (dest) |= SPEC_ABSA (src);
618 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
619 SPEC_ADDR (dest) |= SPEC_ADDR (src);
620 SPEC_OCLS (dest) = SPEC_OCLS (src);
621 SPEC_BLEN (dest) |= SPEC_BLEN (src);
622 SPEC_BSTR (dest) |= SPEC_BSTR (src);
623 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
625 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
626 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
628 /* these are the only function attributes that will be set
629 in a specifier while parsing */
630 FUNC_NONBANKED(dest) |= FUNC_NONBANKED(src);
631 FUNC_BANKED(dest) |= FUNC_BANKED(src);
632 FUNC_ISCRITICAL(dest) |= FUNC_ISCRITICAL(src);
633 FUNC_ISREENT(dest) |= FUNC_ISREENT(src);
634 FUNC_ISNAKED(dest) |= FUNC_ISNAKED(src);
635 FUNC_ISISR(dest) |= FUNC_ISISR(src);
636 FUNC_INTNO(dest) |= FUNC_INTNO(src);
637 FUNC_REGBANK(dest) |= FUNC_REGBANK(src);
642 /*------------------------------------------------------------------*/
643 /* cloneSpec - copies the entire spec and returns a new spec */
644 /*------------------------------------------------------------------*/
646 cloneSpec (sym_link * src)
650 /* go thru chain till we find the specifier */
651 while (src && src->class != SPECIFIER)
655 memcpy (spec, src, sizeof (sym_link));
659 /*------------------------------------------------------------------*/
660 /* genSymName - generates and returns a name used for anonymous vars */
661 /*------------------------------------------------------------------*/
663 genSymName (int level)
665 static int gCount = 0;
666 static char gname[SDCC_NAME_MAX + 1];
668 sprintf (gname, "__%04d%04d", level, gCount++);
672 /*------------------------------------------------------------------*/
673 /* getSpec - returns the specifier part from a declaration chain */
674 /*------------------------------------------------------------------*/
676 getSpec (sym_link * p)
681 while (p && !(IS_SPEC (p)))
687 /*------------------------------------------------------------------*/
688 /* newCharLink() - creates an char type */
689 /*------------------------------------------------------------------*/
696 p->class = SPECIFIER;
697 SPEC_NOUN (p) = V_CHAR;
702 /*------------------------------------------------------------------*/
703 /* newFloatLink - a new Float type */
704 /*------------------------------------------------------------------*/
711 p->class = SPECIFIER;
712 SPEC_NOUN (p) = V_FLOAT;
717 /*------------------------------------------------------------------*/
718 /* newLongLink() - new long type */
719 /*------------------------------------------------------------------*/
726 p->class = SPECIFIER;
727 SPEC_NOUN (p) = V_INT;
733 /*------------------------------------------------------------------*/
734 /* newIntLink() - creates an int type */
735 /*------------------------------------------------------------------*/
742 p->class = SPECIFIER;
743 SPEC_NOUN (p) = V_INT;
748 /*------------------------------------------------------------------*/
749 /* getSize - returns size of a type chain in bits */
750 /*------------------------------------------------------------------*/
752 getSize (sym_link * p)
754 /* if nothing return 0 */
758 { /* if this is the specifier then */
759 switch (SPEC_NOUN (p))
760 { /* depending on the specifier type */
762 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
770 return SPEC_STRUCT (p)->size;
776 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
782 /* this is a specifier */
783 switch (DCL_TYPE (p))
786 return DCL_ELEM (p) * getSize (p->next);
804 /*------------------------------------------------------------------*/
805 /* bitsForType - returns # of bits required to store this type */
806 /*------------------------------------------------------------------*/
808 bitsForType (sym_link * p)
810 /* if nothing return 0 */
815 { /* if this is the specifier then */
817 switch (SPEC_NOUN (p))
818 { /* depending on the specifier type */
820 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
822 return FLOATSIZE * 8;
828 return SPEC_STRUCT (p)->size * 8;
834 return SPEC_BLEN (p);
840 /* this is a specifier */
841 switch (DCL_TYPE (p))
846 return DCL_ELEM (p) * getSize (p->next) * 8;
850 return (PTRSIZE * 8);
854 return (FPTRSIZE * 8);
856 return (GPTRSIZE * 8);
863 /*------------------------------------------------------------------*/
864 /* copySymbolChain - copies a symbol chain */
865 /*------------------------------------------------------------------*/
867 copySymbolChain (symbol * src)
874 dest = copySymbol (src);
875 dest->next = copySymbolChain (src->next);
879 /*------------------------------------------------------------------*/
880 /* copySymbol - makes a copy of a symbol */
881 /*------------------------------------------------------------------*/
883 copySymbol (symbol * src)
890 dest = newSymbol (src->name, src->level);
891 memcpy (dest, src, sizeof (symbol));
892 dest->level = src->level;
893 dest->block = src->block;
894 dest->ival = copyIlist (src->ival);
895 dest->type = copyLinkChain (src->type);
896 dest->etype = getSpec (dest->type);
898 dest->key = src->key;
899 dest->allocreq = src->allocreq;
903 /*------------------------------------------------------------------*/
904 /* reverseSyms - reverses the links for a symbol chain */
905 /*------------------------------------------------------------------*/
907 reverseSyms (symbol * sym)
909 symbol *prev, *curr, *next;
924 sym->next = (void *) NULL;
928 /*------------------------------------------------------------------*/
929 /* reverseLink - reverses the links for a type chain */
930 /*------------------------------------------------------------------*/
932 reverseLink (sym_link * type)
934 sym_link *prev, *curr, *next;
949 type->next = (void *) NULL;
953 /*------------------------------------------------------------------*/
954 /* addSymChain - adds a symbol chain to the symboltable */
955 /*------------------------------------------------------------------*/
957 addSymChain (symbol * symHead)
959 symbol *sym = symHead;
962 for (; sym != NULL; sym = sym->next)
965 checkTypeSanity(sym->etype, sym->name);
967 /* if already exists in the symbol table then check if
968 one of them is an extern definition if yes then
969 then check if the type match, if the types match then
970 delete the current entry and add the new entry */
971 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
972 csym->level == sym->level) {
974 /* one definition extern ? */
975 if (IS_EXTERN (csym->etype) || IS_EXTERN (sym->etype)) {
976 /* do types match ? */
977 if (compareType (csym->type, sym->type) != 1) {
979 werror (E_EXTERN_MISMATCH, csym->name);
982 /* delete current entry */
983 deleteSym (SymbolTab, csym, csym->name);
986 werror (E_DUPLICATE, sym->name);
992 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
997 /*------------------------------------------------------------------*/
998 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
999 /*------------------------------------------------------------------*/
1001 funcInChain (sym_link * lnk)
1012 /*------------------------------------------------------------------*/
1013 /* structElemType - returns the type info of a sturct member */
1014 /*------------------------------------------------------------------*/
1016 structElemType (sym_link * stype, value * id)
1018 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
1019 sym_link *type, *etype;
1020 sym_link *petype = getSpec (stype);
1025 /* look for the id */
1028 if (strcmp (fields->rname, id->name) == 0)
1030 type = copyLinkChain (fields->type);
1031 etype = getSpec (type);
1032 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1033 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1036 fields = fields->next;
1038 werror (E_NOT_MEMBER, id->name);
1043 /*------------------------------------------------------------------*/
1044 /* getStructElement - returns element of a tructure definition */
1045 /*------------------------------------------------------------------*/
1047 getStructElement (structdef * sdef, symbol * sym)
1051 for (field = sdef->fields; field; field = field->next)
1052 if (strcmp (field->name, sym->name) == 0)
1055 werror (E_NOT_MEMBER, sym->name);
1057 return sdef->fields;
1060 /*------------------------------------------------------------------*/
1061 /* compStructSize - computes the size of a structure */
1062 /*------------------------------------------------------------------*/
1064 compStructSize (int su, structdef * sdef)
1066 int sum = 0, usum = 0;
1070 /* for the identifiers */
1071 loop = sdef->fields;
1074 /* create the internal name for this variable */
1075 sprintf (loop->rname, "_%s", loop->name);
1076 loop->offset = (su == UNION ? sum = 0 : sum);
1077 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1079 /* if this is a bit field */
1082 /* change it to a unsigned bit */
1083 SPEC_NOUN (loop->etype) = V_BIT;
1084 SPEC_USIGN (loop->etype) = 1;
1085 /* check if this fit into the remaining */
1086 /* bits of this byte else align it to the */
1087 /* next byte boundary */
1088 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1089 SPEC_BSTR (loop->etype) = bitOffset;
1090 if ((bitOffset += (loop->bitVar % 8)) == 8)
1093 else /* does not fit */ {
1095 SPEC_BSTR (loop->etype) = bitOffset;
1096 sum += (loop->bitVar / 8);
1097 bitOffset += (loop->bitVar % 8);
1099 /* if this is the last field then pad */
1100 if (!loop->next && bitOffset && bitOffset != 8) {
1106 checkDecl (loop, 1);
1107 sum += getSize (loop->type);
1110 #if 0 // jwk: this is done now in addDecl()
1111 /* if function then do the arguments for it */
1112 if (funcInChain (loop->type)) {
1113 processFuncArgs (loop);
1119 /* if this is not a bitfield but the */
1120 /* previous one was and did not take */
1121 /* the whole byte then pad the rest */
1122 if ((loop && !loop->bitVar) && bitOffset) {
1127 /* if union then size = sizeof larget field */
1129 usum = max (usum, sum);
1133 return (su == UNION ? usum : sum);
1136 /*------------------------------------------------------------------*/
1137 /* checkSClass - check the storage class specification */
1138 /*------------------------------------------------------------------*/
1140 checkSClass (symbol * sym, int isProto)
1142 if (getenv("DEBUG_SANITY")) {
1143 fprintf (stderr, "checkSClass: %s \n", sym->name);
1146 /* type is literal can happen foe enums change
1148 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1149 SPEC_SCLS (sym->etype) = S_AUTO;
1151 /* if sfr or sbit then must also be */
1152 /* volatile the initial value will be xlated */
1153 /* to an absolute address */
1154 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1155 SPEC_SCLS (sym->etype) == S_SFR)
1157 SPEC_VOLATILE (sym->etype) = 1;
1158 /* if initial value given */
1161 SPEC_ABSA (sym->etype) = 1;
1162 SPEC_ADDR (sym->etype) =
1163 (int) list2int (sym->ival);
1168 /* if absolute address given then it mark it as
1170 if (IS_ABSOLUTE (sym->etype))
1171 SPEC_VOLATILE (sym->etype) = 1;
1173 /* global variables declared const put into code */
1174 if (sym->level == 0 &&
1175 SPEC_CONST (sym->etype)) {
1176 SPEC_SCLS (sym->etype) = S_CODE;
1179 /* global variable in code space is a constant */
1180 if (sym->level == 0 &&
1181 SPEC_SCLS (sym->etype) == S_CODE &&
1183 SPEC_CONST (sym->etype) = 1;
1186 /* if bit variable then no storage class can be */
1187 /* specified since bit is already a storage */
1188 if (IS_BITVAR (sym->etype) &&
1189 (SPEC_SCLS (sym->etype) != S_FIXED &&
1190 SPEC_SCLS (sym->etype) != S_SBIT &&
1191 SPEC_SCLS (sym->etype) != S_BIT)
1194 werror (E_BITVAR_STORAGE, sym->name);
1195 SPEC_SCLS (sym->etype) = S_FIXED;
1198 /* extern variables cannot be initialized */
1199 if (IS_EXTERN (sym->etype) && sym->ival)
1201 werror (E_EXTERN_INIT, sym->name);
1205 /* if this is an atomatic symbol */
1206 if (sym->level && (options.stackAuto || reentrant)) {
1207 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1208 SPEC_SCLS (sym->etype) == S_FIXED ||
1209 SPEC_SCLS (sym->etype) == S_REGISTER ||
1210 SPEC_SCLS (sym->etype) == S_STACK ||
1211 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1212 SPEC_SCLS (sym->etype) = S_AUTO;
1214 /* storage class may only be specified for statics */
1215 if (!IS_STATIC(sym->etype)) {
1216 werror (E_AUTO_ASSUMED, sym->name);
1221 /* automatic symbols cannot be given */
1222 /* an absolute address ignore it */
1224 SPEC_ABSA (sym->etype) &&
1225 (options.stackAuto || reentrant))
1227 werror (E_AUTO_ABSA, sym->name);
1228 SPEC_ABSA (sym->etype) = 0;
1231 /* arrays & pointers cannot be defined for bits */
1232 /* SBITS or SFRs or BIT */
1233 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1234 (SPEC_NOUN (sym->etype) == V_BIT ||
1235 SPEC_NOUN (sym->etype) == V_SBIT ||
1236 SPEC_SCLS (sym->etype) == S_SFR))
1237 werror (E_BIT_ARRAY, sym->name);
1239 /* if this is a bit|sbit then set length & start */
1240 if (SPEC_NOUN (sym->etype) == V_BIT ||
1241 SPEC_NOUN (sym->etype) == V_SBIT)
1243 SPEC_BLEN (sym->etype) = 1;
1244 SPEC_BSTR (sym->etype) = 0;
1248 /* variables declared in CODE space must have */
1249 /* initializers if not an extern */
1250 if (SPEC_SCLS (sym->etype) == S_CODE &&
1251 sym->ival == NULL &&
1253 port->mem.code_ro &&
1254 !IS_EXTERN (sym->etype) &&
1255 !funcInChain (sym->type))
1256 werror (E_CODE_NO_INIT, sym->name);
1259 /* if parameter or local variable then change */
1260 /* the storage class to reflect where the var will go */
1261 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1262 !IS_STATIC(sym->etype))
1264 if (options.stackAuto || (currFunc && IFFUNC_ISREENT (currFunc->type)))
1266 SPEC_SCLS (sym->etype) = (options.useXstack ?
1267 S_XSTACK : S_STACK);
1271 /* hack-o-matic! I see no reason why the useXstack option should ever
1272 * control this allcoation, but the code was originally that way, and
1273 * changing it for non-390 ports breaks the compiler badly.
1275 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1276 SPEC_SCLS (sym->etype) = (useXdata ?
1282 /*------------------------------------------------------------------*/
1283 /* changePointer - change pointer to functions */
1284 /*------------------------------------------------------------------*/
1286 changePointer (symbol * sym)
1290 /* go thru the chain of declarations */
1291 /* if we find a pointer to a function */
1292 /* unconditionally change it to a ptr */
1294 for (p = sym->type; p; p = p->next)
1296 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1297 DCL_TYPE (p) = GPOINTER;
1298 if (IS_PTR (p) && IS_FUNC (p->next))
1299 DCL_TYPE (p) = CPOINTER;
1303 /*------------------------------------------------------------------*/
1304 /* checkDecl - does semantic validation of a declaration */
1305 /*------------------------------------------------------------------*/
1307 checkDecl (symbol * sym, int isProto)
1310 checkSClass (sym, isProto); /* check the storage class */
1311 changePointer (sym); /* change pointers if required */
1313 /* if this is an array without any dimension
1314 then update the dimension from the initial value */
1315 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1316 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1321 /*------------------------------------------------------------------*/
1322 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1323 /*------------------------------------------------------------------*/
1325 copyLinkChain (sym_link * p)
1327 sym_link *head, *curr, *loop;
1330 head = loop = (curr ? newLink () : (void *) NULL);
1333 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1334 loop->next = (curr->next ? newLink () : (void *) NULL);
1343 /*------------------------------------------------------------------*/
1344 /* cleanUpBlock - cleansup the symbol table specified for all the */
1345 /* symbols in the given block */
1346 /*------------------------------------------------------------------*/
1348 cleanUpBlock (bucket ** table, int block)
1353 /* go thru the entire table */
1354 for (i = 0; i < 256; i++)
1356 for (chain = table[i]; chain; chain = chain->next)
1358 if (chain->block >= block)
1360 deleteSym (table, chain->sym, chain->name);
1366 /*------------------------------------------------------------------*/
1367 /* cleanUpLevel - cleansup the symbol table specified for all the */
1368 /* symbols in the given level */
1369 /*------------------------------------------------------------------*/
1371 cleanUpLevel (bucket ** table, int level)
1376 /* go thru the entire table */
1377 for (i = 0; i < 256; i++)
1379 for (chain = table[i]; chain; chain = chain->next)
1381 if (chain->level >= level)
1383 deleteSym (table, chain->sym, chain->name);
1389 /*------------------------------------------------------------------*/
1390 /* computeType - computes the resultant type from two types */
1391 /*------------------------------------------------------------------*/
1393 computeType (sym_link * type1, sym_link * type2)
1397 sym_link *etype1 = getSpec (type1);
1398 sym_link *etype2 = getSpec (type2);
1400 /* if one of them is a float then result is a float */
1401 /* here we assume that the types passed are okay */
1402 /* and can be cast to one another */
1403 /* which ever is greater in size */
1404 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1405 rType = newFloatLink ();
1407 /* if only one of them is a bit variable
1408 then the other one prevails */
1409 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1410 rType = copyLinkChain (type2);
1411 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1412 rType = copyLinkChain (type1);
1414 /* if one of them is a pointer then that
1417 rType = copyLinkChain (type1);
1418 else if (IS_PTR (type2))
1419 rType = copyLinkChain (type2);
1420 else if (getSize (type1) > getSize (type2))
1421 rType = copyLinkChain (type1);
1423 rType = copyLinkChain (type2);
1425 reType = getSpec (rType);
1427 /* if either of them unsigned but not val then make this unsigned */
1428 if (((!IS_LITERAL(type1) && SPEC_USIGN (etype1)) ||
1429 (!IS_LITERAL(type2) && SPEC_USIGN (etype2))) &&
1431 SPEC_USIGN (reType) = 1;
1433 SPEC_USIGN (reType) = 0;
1435 /* if result is a literal then make not so */
1436 if (IS_LITERAL (reType))
1437 SPEC_SCLS (reType) = S_REGISTER;
1442 /*--------------------------------------------------------------------*/
1443 /* compareType - will do type check return 1 if match, -1 if castable */
1444 /*--------------------------------------------------------------------*/
1446 compareType (sym_link * dest, sym_link * src)
1457 /* if dest is a declarator then */
1462 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1464 //checkFunction(src,dest);
1466 return compareType (dest->next, src->next);
1468 if (IS_PTR (src) && IS_GENPTR (dest))
1470 if (IS_PTR (dest) && IS_ARRAY (src)) {
1471 value *val=aggregateToPointer (valFromType(src));
1472 int res=compareType (dest, val->type);
1473 Safe_free(val->type);
1475 //return res ? -1 : 0;
1478 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1479 return compareType (dest->next, src);
1482 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1488 /* if one is a specifier and the other is not */
1489 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1490 (IS_SPEC (dest) && !IS_SPEC (src)))
1493 /* if one of them is a void then ok */
1494 if (SPEC_NOUN (dest) == V_VOID &&
1495 SPEC_NOUN (src) != V_VOID)
1498 if (SPEC_NOUN (dest) != V_VOID &&
1499 SPEC_NOUN (src) == V_VOID)
1502 /* if they are both bitfields then if the lengths
1503 and starts don't match */
1504 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1505 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1506 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1509 /* it is a specifier */
1510 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1512 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1513 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1514 getSize (dest) == getSize (src))
1516 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1521 else if (IS_STRUCT (dest))
1523 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1528 if (SPEC_LONG (dest) != SPEC_LONG (src))
1531 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1537 /*------------------------------------------------------------------*/
1538 /* inCalleeSaveList - return 1 if found in callee save list */
1539 /*------------------------------------------------------------------*/
1541 inCalleeSaveList (char *s)
1545 for (i = 0; options.calleeSaves[i]; i++)
1546 if (strcmp (options.calleeSaves[i], s) == 0)
1552 /*-----------------------------------------------------------------*/
1553 /* aggregateToPointer: change an agggregate type function */
1554 /* argument to a pointer to that type. */
1555 /*-----------------------------------------------------------------*/
1557 aggregateToPointer (value * val)
1559 if (IS_AGGREGATE (val->type))
1561 /* if this is a structure */
1562 /* then we need to add a new link */
1563 if (IS_STRUCT (val->type))
1565 /* first lets add DECLARATOR type */
1566 sym_link *p = val->type;
1568 werror (W_STRUCT_AS_ARG, val->name);
1569 val->type = newLink ();
1570 val->type->next = p;
1573 /* change to a pointer depending on the */
1574 /* storage class specified */
1575 switch (SPEC_SCLS (val->etype))
1578 DCL_TYPE (val->type) = IPOINTER;
1581 DCL_TYPE (val->type) = PPOINTER;
1584 if (SPEC_OCLS(val->etype)) {
1585 DCL_TYPE(val->type)=PTR_TYPE(SPEC_OCLS(val->etype));
1587 // this should not happen
1588 fprintf (stderr, "wild guess about storage type\n");
1589 if (TARGET_IS_DS390) {
1590 /* The AUTO and REGISTER classes should probably
1591 * also become generic pointers, but I haven't yet
1592 * devised a test case for that.
1594 DCL_TYPE (val->type) = GPOINTER;
1597 if (options.model==MODEL_LARGE) {
1598 DCL_TYPE (val->type) = FPOINTER;
1606 DCL_TYPE (val->type) = POINTER;
1609 DCL_TYPE (val->type) = CPOINTER;
1612 DCL_TYPE (val->type) = FPOINTER;
1615 DCL_TYPE (val->type) = EEPPOINTER;
1618 DCL_TYPE (val->type) = GPOINTER;
1621 /* is there is a symbol associated then */
1622 /* change the type of the symbol as well */
1625 val->sym->type = copyLinkChain (val->type);
1626 val->sym->etype = getSpec (val->sym->type);
1631 /*------------------------------------------------------------------*/
1632 /* checkFunction - does all kinds of check on a function */
1633 /*------------------------------------------------------------------*/
1635 checkFunction (symbol * sym, symbol *csym)
1637 value *exargs, *acargs;
1641 if (getenv("DEBUG_SANITY")) {
1642 fprintf (stderr, "checkFunction: %s ", sym->name);
1645 /* make sure the type is complete and sane */
1646 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1648 /* if not type then some kind of error */
1652 /* if the function has no type then make it return int */
1653 if (!sym->type->next)
1654 sym->type->next = sym->etype = newIntLink ();
1656 /* function cannot return aggregate */
1657 if (IS_AGGREGATE (sym->type->next))
1659 werror (E_FUNC_AGGR, sym->name);
1663 /* function cannot return bit */
1664 if (IS_BITVAR (sym->type->next))
1666 werror (E_FUNC_BIT, sym->name);
1670 /* check if this function is defined as calleeSaves
1671 then mark it as such */
1672 FUNC_CALLEESAVES(sym->type) = inCalleeSaveList (sym->name);
1674 /* if interrupt service routine */
1675 /* then it cannot have arguments */
1676 if (IFFUNC_ARGS(sym->type) && FUNC_ISISR (sym->type))
1678 if (!IS_VOID(FUNC_ARGS(sym->type)->type)) {
1679 werror (E_INT_ARGS, sym->name);
1680 FUNC_ARGS(sym->type)=NULL;
1684 if (!csym && !(csym = findSym (SymbolTab, sym, sym->name)))
1685 return 1; /* not defined nothing more to check */
1687 /* check if body already present */
1688 if (csym && IFFUNC_HASBODY(csym->type))
1690 werror (E_FUNC_BODY, sym->name);
1694 /* check the return value type */
1695 if (compareType (csym->type, sym->type) <= 0)
1697 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1698 printFromToType(csym->type, sym->type);
1702 if (FUNC_ISISR (csym->type) != FUNC_ISISR (sym->type))
1704 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1707 if (FUNC_REGBANK (csym->type) != FUNC_REGBANK (sym->type))
1709 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1712 if (IFFUNC_ISNAKED (csym->type) != IFFUNC_ISNAKED (sym->type))
1714 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1717 /* compare expected args with actual args */
1718 exargs = FUNC_ARGS(csym->type);
1719 acargs = FUNC_ARGS(sym->type);
1721 /* for all the expected args do */
1724 exargs = exargs->next, acargs = acargs->next, argCnt++)
1726 if (getenv("DEBUG_SANITY")) {
1727 fprintf (stderr, "checkFunction: %s ", exargs->name);
1729 /* make sure the type is complete and sane */
1730 checkTypeSanity(exargs->etype, exargs->name);
1732 /* If the actual argument is an array, any prototype
1733 * will have modified it to a pointer. Duplicate that
1736 if (IS_AGGREGATE (acargs->type))
1738 checkValue = copyValue (acargs);
1739 aggregateToPointer (checkValue);
1743 checkValue = acargs;
1746 if (compareType (exargs->type, checkValue->type) <= 0)
1748 werror (E_ARG_TYPE, argCnt);
1749 printFromToType(exargs->type, checkValue->type);
1754 /* if one them ended we have a problem */
1755 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1756 (!exargs && acargs && !IS_VOID (acargs->type)))
1757 werror (E_ARG_COUNT);
1759 /* replace with this defition */
1760 sym->cdef = csym->cdef;
1761 deleteSym (SymbolTab, csym, csym->name);
1762 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1763 if (IS_EXTERN (csym->etype) && !
1764 IS_EXTERN (sym->etype))
1766 addSet (&publics, sym);
1771 /*-----------------------------------------------------------------*/
1772 /* processFuncArgs - does some processing with function args */
1773 /*-----------------------------------------------------------------*/
1775 processFuncArgs (symbol * func)
1779 sym_link *funcType=func->type;
1781 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
1782 fprintf (stderr, "SDCCsymt.c:processFuncArgs(%s)\n", func->name);
1784 // if this is a pointer to a function
1785 if (IS_PTR(funcType)) {
1786 funcType=funcType->next;
1789 /* if this function has variable argument list */
1790 /* then make the function a reentrant one */
1791 if (IFFUNC_HASVARARGS(funcType))
1792 FUNC_ISREENT(funcType)=1;
1794 /* check if this function is defined as calleeSaves
1795 then mark it as such */
1796 FUNC_CALLEESAVES(funcType) = inCalleeSaveList (func->name);
1798 /* loop thru all the arguments */
1799 val = FUNC_ARGS(funcType);
1801 /* if it is void then remove parameters */
1802 if (val && IS_VOID (val->type))
1804 FUNC_ARGS(funcType) = NULL;
1808 /* reset regparm for the port */
1809 (*port->reset_regparms) ();
1810 /* if any of the arguments is an aggregate */
1811 /* change it to pointer to the same type */
1814 /* mark it as a register parameter if
1815 the function does not have VA_ARG
1816 and as port dictates */
1817 if (!IFFUNC_HASVARARGS(funcType) &&
1818 (*port->reg_parm) (val->type))
1820 SPEC_REGPARM (val->etype) = 1;
1823 if (IS_AGGREGATE (val->type))
1825 aggregateToPointer (val);
1832 /* if this is an internal generated function call */
1834 /* ignore --stack-auto for this one, we don't know how it is compiled */
1835 /* simply trust on --int-long-reent or --float-reent */
1836 if (IFFUNC_ISREENT(funcType)) {
1840 /* if this function is reentrant or */
1841 /* automatics r 2b stacked then nothing */
1842 if (IFFUNC_ISREENT (funcType) || options.stackAuto)
1846 val = FUNC_ARGS(funcType);
1851 /* if a symbolname is not given */
1852 /* synthesize a variable name */
1856 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1857 val->sym = newSymbol (val->name, 1);
1858 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1859 val->sym->type = copyLinkChain (val->type);
1860 val->sym->etype = getSpec (val->sym->type);
1861 val->sym->_isparm = 1;
1862 strcpy (val->sym->rname, val->name);
1863 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1864 SPEC_STAT (func->etype);
1865 addSymChain (val->sym);
1868 else /* symbol name given create synth name */
1871 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1872 strcpy (val->sym->rname, val->name);
1873 val->sym->_isparm = 1;
1874 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1875 (options.model != MODEL_SMALL ? xdata : data);
1876 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1877 SPEC_STAT (func->etype);
1883 /*-----------------------------------------------------------------*/
1884 /* isSymbolEqual - compares two symbols return 1 if they match */
1885 /*-----------------------------------------------------------------*/
1887 isSymbolEqual (symbol * dest, symbol * src)
1889 /* if pointers match then equal */
1893 /* if one of them is null then don't match */
1897 /* if both of them have rname match on rname */
1898 if (dest->rname[0] && src->rname[0])
1899 return (!strcmp (dest->rname, src->rname));
1901 /* otherwise match on name */
1902 return (!strcmp (dest->name, src->name));
1905 void PT(sym_link *type)
1907 printTypeChain(type,0);
1909 /*-----------------------------------------------------------------*/
1910 /* printTypeChain - prints the type chain in human readable form */
1911 /*-----------------------------------------------------------------*/
1913 printTypeChain (sym_link * start, FILE * of)
1916 sym_link * type, * search;
1925 fprintf (of, "void");
1929 /* print the chain as it is written in the source: */
1930 /* start with the last entry */
1931 for (type = start; type && type->next; type = type->next)
1937 if (DCL_PTR_VOLATILE (type)) {
1938 fprintf (of, "volatile ");
1940 switch (DCL_TYPE (type))
1943 fprintf (of, "function ");
1946 if (DCL_PTR_CONST (type))
1947 fprintf (of, "const ");
1948 fprintf (of, "generic * ");
1951 if (DCL_PTR_CONST (type))
1952 fprintf (of, "const ");
1953 fprintf (of, "code * ");
1956 if (DCL_PTR_CONST (type))
1957 fprintf (of, "const ");
1958 fprintf (of, "xdata * ");
1961 if (DCL_PTR_CONST (type))
1962 fprintf (of, "const ");
1963 fprintf (of, "eeprom * ");
1967 if (DCL_PTR_CONST (type))
1968 fprintf (of, "const ");
1969 fprintf (of, "near *");
1972 if (DCL_PTR_CONST (type))
1973 fprintf (of, "const ");
1974 fprintf (of, "idata * ");
1977 if (DCL_PTR_CONST (type))
1978 fprintf (of, "const ");
1979 fprintf (of, "pdata * ");
1982 if (DCL_PTR_CONST (type))
1983 fprintf (of, "const ");
1984 fprintf (of, "unkown * ");
1987 fprintf (of, "[] ");
1993 switch (SPEC_SCLS(type))
1995 case S_DATA: fprintf (of, "data "); break;
1996 case S_XDATA: fprintf (of, "xdata "); break;
1997 case S_SFR: fprintf (of, "sfr "); break;
1998 case S_SBIT: fprintf (of, "sbit "); break;
1999 case S_CODE: fprintf (of, "code "); break;
2000 case S_IDATA: fprintf (of, "idata "); break;
2001 case S_PDATA: fprintf (of, "pdata "); break;
2002 case S_LITERAL: fprintf (of, "literal "); break;
2003 case S_STACK: fprintf (of, "stack "); break;
2004 case S_XSTACK: fprintf (of, "xstack "); break;
2005 case S_BIT: fprintf (of, "bit "); break;
2006 case S_EEPROM: fprintf (of, "eeprom "); break;
2010 if (SPEC_VOLATILE (type))
2011 fprintf (of, "volatile ");
2012 if (SPEC_USIGN (type))
2013 fprintf (of, "unsigned ");
2014 if (SPEC_CONST (type))
2015 fprintf (of, "const ");
2017 switch (SPEC_NOUN (type))
2021 fprintf (of, "long ");
2022 fprintf (of, "int");
2026 fprintf (of, "char");
2030 fprintf (of, "void");
2034 fprintf (of, "float");
2038 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2042 fprintf (of, "sbit");
2046 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2050 fprintf (of, "double");
2054 fprintf (of, "unknown type");
2058 /* search entry in list before "type" */
2059 for (search = start; search && search->next != type;)
2060 search = search->next;
2069 /*-----------------------------------------------------------------*/
2070 /* cdbTypeInfo - print the type information for debugger */
2071 /*-----------------------------------------------------------------*/
2073 cdbTypeInfo (sym_link * type, FILE * of)
2075 fprintf (of, "{%d}", getSize (type));
2080 switch (DCL_TYPE (type))
2083 fprintf (of, "DF,");
2086 fprintf (of, "DG,");
2089 fprintf (of, "DC,");
2092 fprintf (of, "DX,");
2095 fprintf (of, "DD,");
2098 fprintf (of, "DI,");
2101 fprintf (of, "DP,");
2104 fprintf (of, "DA,");
2107 fprintf (of, "DA%d,", DCL_ELEM (type));
2115 switch (SPEC_NOUN (type))
2137 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2145 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2152 if (SPEC_USIGN (type))
2160 /*-----------------------------------------------------------------*/
2161 /* cdbSymbol - prints a symbol & its type information for debugger */
2162 /*-----------------------------------------------------------------*/
2164 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2176 fprintf (of, "S:"); /* symbol record */
2177 /* if this is not a structure symbol then
2178 we need to figure out the scope information */
2184 if (IS_STATIC (sym->etype))
2185 fprintf (of, "F%s$", moduleName); /* scope is file */
2187 fprintf (of, "G$"); /* scope is global */
2190 /* symbol is local */
2191 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2194 fprintf (of, "S$"); /* scope is structure */
2196 /* print the name, & mangled name */
2197 fprintf (of, "%s$%d$%d(", sym->name,
2198 sym->level, sym->block);
2200 cdbTypeInfo (sym->type, of);
2203 /* print the address space */
2204 map = SPEC_OCLS (sym->etype);
2205 fprintf (of, "%c,%d,%d",
2206 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2208 /* if assigned to registers then output register names */
2209 /* if this is a function then print
2210 if is it an interrupt routine & interrupt number
2211 and the register bank it is using */
2213 fprintf (of, ",%d,%d,%d", FUNC_ISISR (sym->type),
2214 FUNC_INTNO (sym->type), FUNC_REGBANK (sym->type));
2215 /* alternate location to find this symbol @ : eg registers
2222 /*-----------------------------------------------------------------*/
2223 /* cdbStruct - print a structure for debugger */
2224 /*-----------------------------------------------------------------*/
2226 cdbStruct (structdef * sdef, int block, FILE * of,
2227 int inStruct, char *tag)
2232 /* if block # then must have function scope */
2233 fprintf (of, "F%s$", moduleName);
2234 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2235 for (sym = sdef->fields; sym; sym = sym->next)
2237 fprintf (of, "({%d}", sym->offset);
2238 cdbSymbol (sym, of, TRUE, FALSE);
2246 /*------------------------------------------------------------------*/
2247 /* cdbStructBlock - calls struct printing for a blcks */
2248 /*------------------------------------------------------------------*/
2250 cdbStructBlock (int block, FILE * of)
2253 bucket **table = StructTab;
2257 /* go thru the entire table */
2258 for (i = 0; i < 256; i++)
2260 for (chain = table[i]; chain; chain = chain->next)
2262 if (chain->block >= block)
2264 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2270 /*-----------------------------------------------------------------*/
2271 /* powof2 - returns power of two for the number if number is pow 2 */
2272 /*-----------------------------------------------------------------*/
2274 powof2 (unsigned long num)
2287 if (n1s > 1 || nshifts == 0)
2303 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2304 symbol *__muldiv[3][3][2];
2305 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2306 sym_link *__multypes[3][2];
2307 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2308 symbol *__conv[2][3][2];
2309 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2310 symbol *__rlrr[2][3][2];
2312 sym_link *floatType;
2315 _mangleFunctionName(char *in)
2317 if (port->getMangledFunctionName)
2319 return port->getMangledFunctionName(in);
2327 /*-----------------------------------------------------------------*/
2328 /* initCSupport - create functions for C support routines */
2329 /*-----------------------------------------------------------------*/
2333 const char *smuldivmod[] =
2337 const char *sbwd[] =
2339 "char", "int", "long"
2345 const char *srlrr[] =
2350 int bwd, su, muldivmod, tofrom, rlrr;
2352 if (getenv("SDCC_NO_C_SUPPORT")) {
2353 /* for debugging only */
2357 floatType = newFloatLink ();
2359 for (bwd = 0; bwd < 3; bwd++)
2376 __multypes[bwd][0] = l;
2377 __multypes[bwd][1] = copyLinkChain (l);
2378 SPEC_USIGN (__multypes[bwd][1]) = 1;
2381 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2382 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2383 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2384 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2385 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2386 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2387 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2388 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2389 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2390 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2392 for (tofrom = 0; tofrom < 2; tofrom++)
2394 for (bwd = 0; bwd < 3; bwd++)
2396 for (su = 0; su < 2; su++)
2400 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2401 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2405 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2406 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2412 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2414 for (bwd = 0; bwd < 3; bwd++)
2416 for (su = 0; su < 2; su++)
2418 sprintf (buffer, "_%s%s%s",
2419 smuldivmod[muldivmod],
2422 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2423 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2428 for (rlrr = 0; rlrr < 2; rlrr++)
2430 for (bwd = 0; bwd < 3; bwd++)
2432 for (su = 0; su < 2; su++)
2434 sprintf (buffer, "_%s%s%s",
2438 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2439 FUNC_NONBANKED (__rlrr[rlrr][bwd][su]->type) = 1;