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);
30 char *nounName(sym_link *sl) {
31 switch (SPEC_NOUN(sl))
34 if (SPEC_LONG(sl)) return "long";
35 if (sl->select.s._short) return "short";
38 case V_FLOAT: return "float";
39 case V_CHAR: return "char";
40 case V_VOID: return "void";
41 case V_STRUCT: return "struct";
42 case V_LABEL: return "label";
43 case V_BIT: return "bit";
44 case V_SBIT: return "sbit";
45 case V_DOUBLE: return "double";
50 bucket *SymbolTab[256]; /* the symbol table */
51 bucket *StructTab[256]; /* the structure table */
52 bucket *TypedefTab[256]; /* the typedef table */
53 bucket *LabelTab[256]; /* the Label table */
54 bucket *enumTab[256]; /* enumerated table */
56 /*------------------------------------------------------------------*/
57 /* initSymt () - initialises symbol table related stuff */
58 /*------------------------------------------------------------------*/
64 for (i = 0; i < 256; i++)
65 SymbolTab[i] = StructTab[i] = (void *) NULL;
69 /*-----------------------------------------------------------------*/
70 /* newBucket - allocates & returns a new bucket */
71 /*-----------------------------------------------------------------*/
77 bp = Safe_alloc ( sizeof (bucket));
82 /*-----------------------------------------------------------------*/
83 /* hashKey - computes the hashkey given a symbol name */
84 /*-----------------------------------------------------------------*/
86 hashKey (const char *s)
88 unsigned long key = 0;
95 /*-----------------------------------------------------------------*/
96 /* addSym - adds a symbol to the hash Table */
97 /*-----------------------------------------------------------------*/
99 addSym (bucket ** stab,
106 int i; /* index into the hash Table */
107 bucket *bp; /* temp bucket * */
110 if (getenv("DEBUG_SANITY")) {
111 fprintf (stderr, "addSym: %s ", sname);
113 /* make sure the type is complete and sane */
114 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
117 /* prevent overflow of the (r)name buffers */
118 if (strlen(sname)>SDCC_SYMNAME_MAX) {
119 werror (W_SYMBOL_NAME_TOO_LONG, SDCC_SYMNAME_MAX);
120 sname[SDCC_SYMNAME_MAX]='\0';
123 /* the symbols are always added at the head of the list */
125 /* get a free entry */
126 bp = Safe_alloc ( sizeof (bucket));
128 bp->sym = sym; /* update the symbol pointer */
129 bp->level = level; /* update the nest level */
131 strcpy (bp->name, sname); /* copy the name into place */
133 /* if this is the first entry */
136 bp->prev = bp->next = (void *) NULL; /* point to nothing */
139 /* not first entry then add @ head of list */
149 /*-----------------------------------------------------------------*/
150 /* deleteSym - deletes a symbol from the hash Table entry */
151 /*-----------------------------------------------------------------*/
153 deleteSym (bucket ** stab, void *sym, char *sname)
161 /* find the symbol */
164 if (bp->sym == sym) /* found it then break out */
165 break; /* of the loop */
169 if (!bp) /* did not find it */
171 /* if this is the first one in the chain */
175 if (stab[i]) /* if chain ! empty */
176 stab[i]->prev = (void *) NULL;
178 /* middle || end of chain */
181 if (bp->next) /* if not end of chain */
182 bp->next->prev = bp->prev;
184 bp->prev->next = bp->next;
189 /*-----------------------------------------------------------------*/
190 /* findSym - finds a symbol in a table */
191 /*-----------------------------------------------------------------*/
193 findSym (bucket ** stab, void *sym, const char *sname)
197 bp = stab[hashKey (sname)];
200 if (bp->sym == sym || strcmp (bp->name, sname) == 0)
205 return (bp ? bp->sym : (void *) NULL);
208 /*-----------------------------------------------------------------*/
209 /* findSymWithLevel - finds a symbol with a name & level */
210 /*-----------------------------------------------------------------*/
212 findSymWithLevel (bucket ** stab, symbol * sym)
216 bp = stab[hashKey (sym->name)];
219 ** do the search from the head of the list since the
220 ** elements are added at the head it is ensured that
221 ** we will find the deeper definitions before we find
222 ** the global ones. we need to check for symbols with
223 ** level <= to the level given, if levels match then block
224 ** numbers need to match as well
228 if (strcmp (bp->name, sym->name) == 0 && bp->level <= sym->level)
230 /* if this is parameter then nothing else need to be checked */
231 if (((symbol *) (bp->sym))->_isparm)
233 /* if levels match then block numbers should also match */
234 if (bp->level && bp->level == sym->level && bp->block == sym->block)
236 /* if levels don't match then we are okay */
237 if (bp->level && bp->level != sym->level && bp->block <= sym->block)
239 /* if this is a global variable then we are ok too */
247 return (void *) NULL;
250 /*-----------------------------------------------------------------*/
251 /* findSymWithBlock - finds a symbol with name in with a block */
252 /*-----------------------------------------------------------------*/
254 findSymWithBlock (bucket ** stab, symbol * sym, int block)
258 bp = stab[hashKey (sym->name)];
261 if (strcmp (bp->name, sym->name) == 0 &&
267 return (bp ? bp->sym : (void *) NULL);
270 /*------------------------------------------------------------------*/
271 /* newSymbol () - returns a new pointer to a symbol */
272 /*------------------------------------------------------------------*/
274 newSymbol (char *name, int scope)
278 sym = Safe_alloc ( sizeof (symbol));
280 strcpy (sym->name, name); /* copy the name */
281 sym->level = scope; /* set the level */
282 sym->block = currBlockno;
283 sym->lineDef = yylineno; /* set the line number */
287 /*------------------------------------------------------------------*/
288 /* newLink - creates a new link (declarator,specifier) */
289 /*------------------------------------------------------------------*/
295 p = Safe_alloc ( sizeof (sym_link));
300 /*------------------------------------------------------------------*/
301 /* newStruct - creats a new structdef from the free list */
302 /*------------------------------------------------------------------*/
304 newStruct (char *tag)
308 s = Safe_alloc ( sizeof (structdef));
310 strcpy (s->tag, tag); /* copy the tag */
314 /*------------------------------------------------------------------*/
315 /* pointerTypes - do the computation for the pointer types */
316 /*------------------------------------------------------------------*/
318 pointerTypes (sym_link * ptr, sym_link * type)
323 /* find the first pointer type */
324 while (ptr && !IS_PTR (ptr))
327 /* could not find it */
328 if (!ptr || IS_SPEC (ptr))
331 if (IS_PTR(ptr) && DCL_TYPE(ptr)!=UPOINTER) {
332 pointerTypes (ptr->next, type);
336 /* change the pointer type depending on the
337 storage class of the type */
340 DCL_PTR_CONST (ptr) = SPEC_CONST (type);
341 DCL_PTR_VOLATILE (ptr) = SPEC_VOLATILE (type);
342 switch (SPEC_SCLS (type))
345 DCL_TYPE (ptr) = FPOINTER;
348 DCL_TYPE (ptr) = IPOINTER;
351 DCL_TYPE (ptr) = PPOINTER;
354 DCL_TYPE (ptr) = POINTER;
357 DCL_PTR_CONST (ptr) = port->mem.code_ro;
358 DCL_TYPE (ptr) = CPOINTER;
361 DCL_TYPE (ptr) = EEPPOINTER;
364 DCL_TYPE (ptr) = GPOINTER;
367 /* the storage class of type ends here */
370 SPEC_VOLATILE (type) = 0;
373 /* now change all the remaining unknown pointers
374 to generic pointers */
377 if (!IS_SPEC (ptr) && DCL_TYPE (ptr) == UPOINTER)
378 DCL_TYPE (ptr) = GPOINTER;
382 /* same for the type although it is highly unlikely that
383 type will have a pointer */
386 if (!IS_SPEC (type) && DCL_TYPE (type) == UPOINTER)
387 DCL_TYPE (type) = GPOINTER;
393 /*------------------------------------------------------------------*/
394 /* addDecl - adds a declarator @ the end of a chain */
395 /*------------------------------------------------------------------*/
397 addDecl (symbol * sym, int type, sym_link * p)
403 /* if we are passed a link then set head & tail */
412 head = tail = newLink ();
413 DCL_TYPE (head) = type;
416 /* if this is the first entry */
424 if (IS_SPEC (sym->etype) && IS_SPEC (head) && head == tail)
426 sym->etype = mergeSpec (sym->etype, head, sym->name);
430 if (IS_SPEC (sym->etype) && !IS_SPEC (head) && head == tail)
433 while (t->next != sym->etype)
436 tail->next = sym->etype;
440 sym->etype->next = head;
446 /* if the type is an unknown pointer and has
447 a tspec then take the storage class const & volatile
448 attribute from the tspec & make it those of this
452 //DCL_TYPE (p) == UPOINTER &&
455 if (!IS_SPEC (sym->etype))
457 sym->etype = sym->etype->next = newLink ();
458 sym->etype->class = SPECIFIER;
460 SPEC_SCLS (sym->etype) = SPEC_SCLS (DCL_TSPEC (p));
461 SPEC_CONST (sym->etype) = SPEC_CONST (DCL_TSPEC (p));
462 SPEC_VOLATILE (sym->etype) = SPEC_VOLATILE (DCL_TSPEC (p));
463 DCL_TSPEC (p) = NULL;
468 /*------------------------------------------------------------------
469 checkTypeSanity: prevent the user from doing e.g.:
471 ------------------------------------------------------------------*/
472 void checkTypeSanity(sym_link *etype, char *name) {
476 if (getenv("DEBUG_SANITY")) {
477 fprintf (stderr, "sanity check skipped for %s (etype==0)\n", name);
482 if (!IS_SPEC(etype)) {
483 if (getenv("DEBUG_SANITY")) {
484 fprintf (stderr, "sanity check skipped for %s (!IS_SPEC)\n", name);
489 noun=nounName(etype);
491 if (getenv("DEBUG_SANITY")) {
492 fprintf (stderr, "checking sanity for %s %x\n", name, (int)etype);
495 if ((SPEC_NOUN(etype)==V_CHAR ||
496 SPEC_NOUN(etype)==V_FLOAT ||
497 SPEC_NOUN(etype)==V_DOUBLE ||
498 SPEC_NOUN(etype)==V_VOID) &&
499 (etype->select.s._short || SPEC_LONG(etype))) {
500 // long or short for char float double or void
501 werror (E_LONG_OR_SHORT_INVALID, noun, name);
503 if ((SPEC_NOUN(etype)==V_FLOAT ||
504 SPEC_NOUN(etype)==V_DOUBLE ||
505 SPEC_NOUN(etype)==V_VOID) &&
506 (etype->select.s._signed || SPEC_USIGN(etype))) {
507 // signed or unsigned for float double or void
508 werror (E_SIGNED_OR_UNSIGNED_INVALID, noun, name);
511 // special case for "short"
512 if (etype->select.s._short) {
513 SPEC_NOUN(etype) = options.shortis8bits ? V_CHAR : V_INT;
514 etype->select.s._short = 0;
518 "const a;" or "data b;" or "signed s" or "long l"
520 if (!SPEC_NOUN(etype)) {
521 SPEC_NOUN(etype)=V_INT;
524 if (etype->select.s._signed && SPEC_USIGN(etype)) {
525 // signed AND unsigned
526 werror (E_SIGNED_AND_UNSIGNED_INVALID, noun, name);
528 if (etype->select.s._short && SPEC_LONG(etype)) {
530 werror (E_LONG_AND_SHORT_INVALID, noun, name);
535 /*------------------------------------------------------------------*/
536 /* mergeSpec - merges two specifiers and returns the new one */
537 /*------------------------------------------------------------------*/
539 mergeSpec (sym_link * dest, sym_link * src, char *name)
541 sym_link *symlink=dest;
543 if (!IS_SPEC(dest) || !IS_SPEC(src)) {
544 werror (E_INTERNAL_ERROR, __FILE__, __LINE__, "cannot merge declarator");
548 if (getenv("DEBUG_mergeSpec")) {
549 fprintf (stderr, "mergeSpec: \"%s\"\n", name);
552 if (SPEC_NOUN(src)) {
553 if (!SPEC_NOUN(dest)) {
554 SPEC_NOUN(dest)=SPEC_NOUN(src);
556 /* we shouldn't redeclare the type */
557 if (getenv("DEBUG_SANITY")) {
558 fprintf (stderr, "mergeSpec: ");
560 werror(E_TWO_OR_MORE_DATA_TYPES, name);
564 if (SPEC_SCLS(src)) {
565 /* if destination has no storage class */
566 if (!SPEC_SCLS (dest) || SPEC_SCLS(dest)==S_REGISTER) {
567 SPEC_SCLS (dest) = SPEC_SCLS (src);
569 if (getenv("DEBUG_SANITY")) {
570 fprintf (stderr, "mergeSpec: ");
572 werror(E_TWO_OR_MORE_STORAGE_CLASSES, name);
576 /* copy all the specifications */
578 // we really should do:
580 if (SPEC_what(src)) {
581 if (SPEC_what(dest)) {
582 werror(W_DUPLICATE_SPEC, "what");
584 SPEC_what(dst)|=SPEC_what(src);
587 // but there are more important thing right now
589 SPEC_LONG (dest) |= SPEC_LONG (src);
590 dest->select.s._short|=src->select.s._short;
591 SPEC_USIGN (dest) |= SPEC_USIGN (src);
592 dest->select.s._signed|=src->select.s._signed;
593 SPEC_STAT (dest) |= SPEC_STAT (src);
594 SPEC_EXTR (dest) |= SPEC_EXTR (src);
595 SPEC_ABSA (dest) |= SPEC_ABSA (src);
596 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
597 SPEC_ADDR (dest) |= SPEC_ADDR (src);
598 SPEC_OCLS (dest) = SPEC_OCLS (src);
599 SPEC_BLEN (dest) |= SPEC_BLEN (src);
600 SPEC_BSTR (dest) |= SPEC_BSTR (src);
601 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
603 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
604 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
606 /* these are the only function attributes that will be set
607 in a specifier while parsing */
608 FUNC_NONBANKED(dest) |= FUNC_NONBANKED(src);
609 FUNC_BANKED(dest) |= FUNC_BANKED(src);
610 FUNC_ISCRITICAL(dest) |= FUNC_ISCRITICAL(src);
611 FUNC_ISREENT(dest) |= FUNC_ISREENT(src);
612 FUNC_ISNAKED(dest) |= FUNC_ISNAKED(src);
617 /*------------------------------------------------------------------*/
618 /* cloneSpec - copies the entire spec and returns a new spec */
619 /*------------------------------------------------------------------*/
621 cloneSpec (sym_link * src)
625 /* go thru chain till we find the specifier */
626 while (src && src->class != SPECIFIER)
630 memcpy (spec, src, sizeof (sym_link));
634 /*------------------------------------------------------------------*/
635 /* genSymName - generates and returns a name used for anonymous vars */
636 /*------------------------------------------------------------------*/
638 genSymName (int level)
640 static int gCount = 0;
641 static char gname[SDCC_NAME_MAX + 1];
643 sprintf (gname, "__%04d%04d", level, gCount++);
647 /*------------------------------------------------------------------*/
648 /* getSpec - returns the specifier part from a declaration chain */
649 /*------------------------------------------------------------------*/
651 getSpec (sym_link * p)
656 while (p && !(IS_SPEC (p)))
662 /*------------------------------------------------------------------*/
663 /* newCharLink() - creates an char type */
664 /*------------------------------------------------------------------*/
671 p->class = SPECIFIER;
672 SPEC_NOUN (p) = V_CHAR;
677 /*------------------------------------------------------------------*/
678 /* newFloatLink - a new Float type */
679 /*------------------------------------------------------------------*/
686 p->class = SPECIFIER;
687 SPEC_NOUN (p) = V_FLOAT;
692 /*------------------------------------------------------------------*/
693 /* newLongLink() - new long type */
694 /*------------------------------------------------------------------*/
701 p->class = SPECIFIER;
702 SPEC_NOUN (p) = V_INT;
708 /*------------------------------------------------------------------*/
709 /* newIntLink() - creates an int type */
710 /*------------------------------------------------------------------*/
717 p->class = SPECIFIER;
718 SPEC_NOUN (p) = V_INT;
723 /*------------------------------------------------------------------*/
724 /* getSize - returns size of a type chain in bits */
725 /*------------------------------------------------------------------*/
727 getSize (sym_link * p)
729 /* if nothing return 0 */
733 { /* if this is the specifier then */
734 switch (SPEC_NOUN (p))
735 { /* depending on the specifier type */
737 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
745 return SPEC_STRUCT (p)->size;
751 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
757 /* this is a specifier */
758 switch (DCL_TYPE (p))
763 return DCL_ELEM (p) * getSize (p->next);
780 /*------------------------------------------------------------------*/
781 /* bitsForType - returns # of bits required to store this type */
782 /*------------------------------------------------------------------*/
784 bitsForType (sym_link * p)
786 /* if nothing return 0 */
791 { /* if this is the specifier then */
793 switch (SPEC_NOUN (p))
794 { /* depending on the specifier type */
796 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
798 return FLOATSIZE * 8;
804 return SPEC_STRUCT (p)->size * 8;
810 return SPEC_BLEN (p);
816 /* this is a specifier */
817 switch (DCL_TYPE (p))
822 return DCL_ELEM (p) * getSize (p->next) * 8;
826 return (PTRSIZE * 8);
830 return (FPTRSIZE * 8);
832 return (GPTRSIZE * 8);
839 /*------------------------------------------------------------------*/
840 /* copySymbolChain - copies a symbol chain */
841 /*------------------------------------------------------------------*/
843 copySymbolChain (symbol * src)
850 dest = copySymbol (src);
851 dest->next = copySymbolChain (src->next);
855 /*------------------------------------------------------------------*/
856 /* copySymbol - makes a copy of a symbol */
857 /*------------------------------------------------------------------*/
859 copySymbol (symbol * src)
866 dest = newSymbol (src->name, src->level);
867 memcpy (dest, src, sizeof (symbol));
868 dest->level = src->level;
869 dest->block = src->block;
870 dest->ival = copyIlist (src->ival);
871 dest->type = copyLinkChain (src->type);
872 dest->etype = getSpec (dest->type);
874 dest->key = src->key;
875 dest->allocreq = src->allocreq;
879 /*------------------------------------------------------------------*/
880 /* reverseSyms - reverses the links for a symbol chain */
881 /*------------------------------------------------------------------*/
883 reverseSyms (symbol * sym)
885 symbol *prev, *curr, *next;
900 sym->next = (void *) NULL;
904 /*------------------------------------------------------------------*/
905 /* reverseLink - reverses the links for a type chain */
906 /*------------------------------------------------------------------*/
908 reverseLink (sym_link * type)
910 sym_link *prev, *curr, *next;
925 type->next = (void *) NULL;
929 /*------------------------------------------------------------------*/
930 /* addSymChain - adds a symbol chain to the symboltable */
931 /*------------------------------------------------------------------*/
933 addSymChain (symbol * symHead)
935 symbol *sym = symHead;
938 for (; sym != NULL; sym = sym->next)
941 checkTypeSanity(sym->etype, sym->name);
943 /* if already exists in the symbol table then check if
944 one of them is an extern definition if yes then
945 then check if the type match, if the types match then
946 delete the current entry and add the new entry */
947 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
948 csym->level == sym->level) {
950 /* one definition extern ? */
951 if (IS_EXTERN (csym->etype) || IS_EXTERN (sym->etype)) {
952 /* do types match ? */
953 if (compareType (csym->type, sym->type) != 1) {
955 werror (E_EXTERN_MISMATCH, csym->name);
958 /* delete current entry */
959 deleteSym (SymbolTab, csym, csym->name);
962 werror (E_DUPLICATE, sym->name);
968 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
973 /*------------------------------------------------------------------*/
974 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
975 /*------------------------------------------------------------------*/
977 funcInChain (sym_link * lnk)
988 /*------------------------------------------------------------------*/
989 /* structElemType - returns the type info of a sturct member */
990 /*------------------------------------------------------------------*/
992 structElemType (sym_link * stype, value * id)
994 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
995 sym_link *type, *etype;
996 sym_link *petype = getSpec (stype);
1001 /* look for the id */
1004 if (strcmp (fields->rname, id->name) == 0)
1006 type = copyLinkChain (fields->type);
1007 etype = getSpec (type);
1008 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1009 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1012 fields = fields->next;
1014 werror (E_NOT_MEMBER, id->name);
1019 /*------------------------------------------------------------------*/
1020 /* getStructElement - returns element of a tructure definition */
1021 /*------------------------------------------------------------------*/
1023 getStructElement (structdef * sdef, symbol * sym)
1027 for (field = sdef->fields; field; field = field->next)
1028 if (strcmp (field->name, sym->name) == 0)
1031 werror (E_NOT_MEMBER, sym->name);
1033 return sdef->fields;
1036 /*------------------------------------------------------------------*/
1037 /* compStructSize - computes the size of a structure */
1038 /*------------------------------------------------------------------*/
1040 compStructSize (int su, structdef * sdef)
1042 int sum = 0, usum = 0;
1046 /* for the identifiers */
1047 loop = sdef->fields;
1050 /* create the internal name for this variable */
1051 sprintf (loop->rname, "_%s", loop->name);
1052 loop->offset = (su == UNION ? sum = 0 : sum);
1053 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1055 /* if this is a bit field */
1058 /* change it to a unsigned bit */
1059 SPEC_NOUN (loop->etype) = V_BIT;
1060 SPEC_USIGN (loop->etype) = 1;
1061 /* check if this fit into the remaining */
1062 /* bits of this byte else align it to the */
1063 /* next byte boundary */
1064 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1065 SPEC_BSTR (loop->etype) = bitOffset;
1066 if ((bitOffset += (loop->bitVar % 8)) == 8)
1069 else /* does not fit */ {
1071 SPEC_BSTR (loop->etype) = bitOffset;
1072 sum += (loop->bitVar / 8);
1073 bitOffset += (loop->bitVar % 8);
1075 /* if this is the last field then pad */
1076 if (!loop->next && bitOffset && bitOffset != 8) {
1082 checkDecl (loop, 1);
1083 sum += getSize (loop->type);
1086 /* if function then do the arguments for it */
1087 if (funcInChain (loop->type)) {
1088 processFuncArgs (loop, 1);
1093 /* if this is not a bitfield but the */
1094 /* previous one was and did not take */
1095 /* the whole byte then pad the rest */
1096 if ((loop && !loop->bitVar) && bitOffset) {
1101 /* if union then size = sizeof larget field */
1103 usum = max (usum, sum);
1107 return (su == UNION ? usum : sum);
1110 /*------------------------------------------------------------------*/
1111 /* checkSClass - check the storage class specification */
1112 /*------------------------------------------------------------------*/
1114 checkSClass (symbol * sym, int isProto)
1116 if (getenv("DEBUG_SANITY")) {
1117 fprintf (stderr, "checkSClass: %s \n", sym->name);
1119 if (strcmp(sym->name, "_testsGlobal")==0) {
1123 /* type is literal can happen foe enums change
1125 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1126 SPEC_SCLS (sym->etype) = S_AUTO;
1128 /* if sfr or sbit then must also be */
1129 /* volatile the initial value will be xlated */
1130 /* to an absolute address */
1131 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1132 SPEC_SCLS (sym->etype) == S_SFR)
1134 SPEC_VOLATILE (sym->etype) = 1;
1135 /* if initial value given */
1138 SPEC_ABSA (sym->etype) = 1;
1139 SPEC_ADDR (sym->etype) =
1140 (int) list2int (sym->ival);
1145 /* if absolute address given then it mark it as
1147 if (IS_ABSOLUTE (sym->etype))
1148 SPEC_VOLATILE (sym->etype) = 1;
1150 /* global variables declared const put into code */
1151 if (sym->level == 0 &&
1152 SPEC_CONST (sym->etype)) {
1153 SPEC_SCLS (sym->etype) = S_CODE;
1156 /* global variable in code space is a constant */
1157 if (sym->level == 0 &&
1158 SPEC_SCLS (sym->etype) == S_CODE &&
1160 SPEC_CONST (sym->etype) = 1;
1163 /* if bit variable then no storage class can be */
1164 /* specified since bit is already a storage */
1165 if (IS_BITVAR (sym->etype) &&
1166 (SPEC_SCLS (sym->etype) != S_FIXED &&
1167 SPEC_SCLS (sym->etype) != S_SBIT &&
1168 SPEC_SCLS (sym->etype) != S_BIT)
1171 werror (E_BITVAR_STORAGE, sym->name);
1172 SPEC_SCLS (sym->etype) = S_FIXED;
1175 /* extern variables cannot be initialized */
1176 if (IS_EXTERN (sym->etype) && sym->ival)
1178 werror (E_EXTERN_INIT, sym->name);
1182 /* if this is an atomatic symbol */
1183 if (sym->level && (options.stackAuto || reentrant)) {
1184 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1185 SPEC_SCLS (sym->etype) == S_FIXED ||
1186 SPEC_SCLS (sym->etype) == S_REGISTER ||
1187 SPEC_SCLS (sym->etype) == S_STACK ||
1188 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1189 SPEC_SCLS (sym->etype) = S_AUTO;
1191 /* storage class may only be specified for statics */
1192 if (!IS_STATIC(sym->etype)) {
1193 werror (E_AUTO_ASSUMED, sym->name);
1198 /* automatic symbols cannot be given */
1199 /* an absolute address ignore it */
1201 SPEC_ABSA (sym->etype) &&
1202 (options.stackAuto || reentrant))
1204 werror (E_AUTO_ABSA, sym->name);
1205 SPEC_ABSA (sym->etype) = 0;
1208 /* arrays & pointers cannot be defined for bits */
1209 /* SBITS or SFRs or BIT */
1210 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1211 (SPEC_NOUN (sym->etype) == V_BIT ||
1212 SPEC_NOUN (sym->etype) == V_SBIT ||
1213 SPEC_SCLS (sym->etype) == S_SFR))
1214 werror (E_BIT_ARRAY, sym->name);
1216 /* if this is a bit|sbit then set length & start */
1217 if (SPEC_NOUN (sym->etype) == V_BIT ||
1218 SPEC_NOUN (sym->etype) == V_SBIT)
1220 SPEC_BLEN (sym->etype) = 1;
1221 SPEC_BSTR (sym->etype) = 0;
1225 /* variables declared in CODE space must have */
1226 /* initializers if not an extern */
1227 if (SPEC_SCLS (sym->etype) == S_CODE &&
1228 sym->ival == NULL &&
1230 port->mem.code_ro &&
1231 !IS_EXTERN (sym->etype) &&
1232 !funcInChain (sym->type))
1233 werror (E_CODE_NO_INIT, sym->name);
1236 /* if parameter or local variable then change */
1237 /* the storage class to reflect where the var will go */
1238 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1239 !IS_STATIC(sym->etype))
1241 if (options.stackAuto || (currFunc && IFFUNC_ISREENT (currFunc->type)))
1243 SPEC_SCLS (sym->etype) = (options.useXstack ?
1244 S_XSTACK : S_STACK);
1248 /* hack-o-matic! I see no reason why the useXstack option should ever
1249 * control this allcoation, but the code was originally that way, and
1250 * changing it for non-390 ports breaks the compiler badly.
1252 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1253 SPEC_SCLS (sym->etype) = (useXdata ?
1259 /*------------------------------------------------------------------*/
1260 /* changePointer - change pointer to functions */
1261 /*------------------------------------------------------------------*/
1263 changePointer (symbol * sym)
1267 /* go thru the chain of declarations */
1268 /* if we find a pointer to a function */
1269 /* unconditionally change it to a ptr */
1271 for (p = sym->type; p; p = p->next)
1273 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1274 DCL_TYPE (p) = GPOINTER;
1275 if (IS_PTR (p) && IS_FUNC (p->next))
1276 DCL_TYPE (p) = CPOINTER;
1280 /*------------------------------------------------------------------*/
1281 /* checkDecl - does semantic validation of a declaration */
1282 /*------------------------------------------------------------------*/
1284 checkDecl (symbol * sym, int isProto)
1287 checkSClass (sym, isProto); /* check the storage class */
1288 changePointer (sym); /* change pointers if required */
1290 /* if this is an array without any dimension
1291 then update the dimension from the initial value */
1292 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1293 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1298 /*------------------------------------------------------------------*/
1299 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1300 /*------------------------------------------------------------------*/
1302 copyLinkChain (sym_link * p)
1304 sym_link *head, *curr, *loop;
1307 head = loop = (curr ? newLink () : (void *) NULL);
1310 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1311 loop->next = (curr->next ? newLink () : (void *) NULL);
1320 /*------------------------------------------------------------------*/
1321 /* cleanUpBlock - cleansup the symbol table specified for all the */
1322 /* symbols in the given block */
1323 /*------------------------------------------------------------------*/
1325 cleanUpBlock (bucket ** table, int block)
1330 /* go thru the entire table */
1331 for (i = 0; i < 256; i++)
1333 for (chain = table[i]; chain; chain = chain->next)
1335 if (chain->block >= block)
1337 deleteSym (table, chain->sym, chain->name);
1343 /*------------------------------------------------------------------*/
1344 /* cleanUpLevel - cleansup the symbol table specified for all the */
1345 /* symbols in the given level */
1346 /*------------------------------------------------------------------*/
1348 cleanUpLevel (bucket ** table, int level)
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->level >= level)
1360 deleteSym (table, chain->sym, chain->name);
1366 /*------------------------------------------------------------------*/
1367 /* computeType - computes the resultant type from two types */
1368 /*------------------------------------------------------------------*/
1370 computeType (sym_link * type1, sym_link * type2)
1374 sym_link *etype1 = getSpec (type1);
1375 sym_link *etype2 = getSpec (type2);
1377 /* if one of them is a float then result is a float */
1378 /* here we assume that the types passed are okay */
1379 /* and can be cast to one another */
1380 /* which ever is greater in size */
1381 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1382 rType = newFloatLink ();
1384 /* if only one of them is a bit variable
1385 then the other one prevails */
1386 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1387 rType = copyLinkChain (type2);
1388 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1389 rType = copyLinkChain (type1);
1391 /* if one of them is a pointer then that
1394 rType = copyLinkChain (type1);
1395 else if (IS_PTR (type2))
1396 rType = copyLinkChain (type2);
1397 else if (getSize (type1) > getSize (type2))
1398 rType = copyLinkChain (type1);
1400 rType = copyLinkChain (type2);
1402 reType = getSpec (rType);
1404 /* if either of them unsigned but not val then make this unsigned */
1405 if (((!IS_LITERAL(type1) && SPEC_USIGN (etype1)) ||
1406 (!IS_LITERAL(type2) && SPEC_USIGN (etype2))) &&
1408 SPEC_USIGN (reType) = 1;
1410 SPEC_USIGN (reType) = 0;
1412 /* if result is a literal then make not so */
1413 if (IS_LITERAL (reType))
1414 SPEC_SCLS (reType) = S_REGISTER;
1419 /*--------------------------------------------------------------------*/
1420 /* compareType - will do type check return 1 if match, -1 if castable */
1421 /*--------------------------------------------------------------------*/
1423 compareType (sym_link * dest, sym_link * src)
1434 /* if dest is a declarator then */
1439 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1441 //checkFunction(src,dest);
1443 return compareType (dest->next, src->next);
1445 if (IS_PTR (src) && IS_GENPTR (dest))
1447 if (IS_PTR (dest) && IS_ARRAY (src)) {
1448 value *val=aggregateToPointer (valFromType(src));
1449 int res=compareType (dest, val->type);
1450 Safe_free(val->type);
1454 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1455 return compareType (dest->next, src);
1458 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1464 /* if one is a specifier and the other is not */
1465 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1466 (IS_SPEC (dest) && !IS_SPEC (src)))
1469 /* if one of them is a void then ok */
1470 if (SPEC_NOUN (dest) == V_VOID &&
1471 SPEC_NOUN (src) != V_VOID)
1474 if (SPEC_NOUN (dest) != V_VOID &&
1475 SPEC_NOUN (src) == V_VOID)
1478 /* if they are both bitfields then if the lengths
1479 and starts don't match */
1480 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1481 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1482 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1485 /* it is a specifier */
1486 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1488 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1489 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1490 getSize (dest) == getSize (src))
1492 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1497 else if (IS_STRUCT (dest))
1499 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1504 if (SPEC_LONG (dest) != SPEC_LONG (src))
1507 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1513 /*------------------------------------------------------------------*/
1514 /* inCalleeSaveList - return 1 if found in callee save list */
1515 /*------------------------------------------------------------------*/
1517 inCalleeSaveList (char *s)
1521 for (i = 0; options.calleeSaves[i]; i++)
1522 if (strcmp (options.calleeSaves[i], s) == 0)
1528 /*-----------------------------------------------------------------*/
1529 /* aggregateToPointer: change an agggregate type function */
1530 /* argument to a pointer to that type. */
1531 /*-----------------------------------------------------------------*/
1533 aggregateToPointer (value * val)
1535 if (IS_AGGREGATE (val->type))
1537 /* if this is a structure */
1538 /* then we need to add a new link */
1539 if (IS_STRUCT (val->type))
1541 /* first lets add DECLARATOR type */
1542 sym_link *p = val->type;
1544 werror (W_STRUCT_AS_ARG, val->name);
1545 val->type = newLink ();
1546 val->type->next = p;
1549 /* change to a pointer depending on the */
1550 /* storage class specified */
1551 switch (SPEC_SCLS (val->etype))
1554 DCL_TYPE (val->type) = IPOINTER;
1557 DCL_TYPE (val->type) = PPOINTER;
1560 if (TARGET_IS_DS390)
1562 /* The AUTO and REGISTER classes should probably
1563 * also become generic pointers, but I haven't yet
1564 * devised a test case for that.
1566 DCL_TYPE (val->type) = GPOINTER;
1569 if (options.model==MODEL_LARGE) {
1570 DCL_TYPE (val->type) = FPOINTER;
1577 DCL_TYPE (val->type) = POINTER;
1580 DCL_TYPE (val->type) = CPOINTER;
1583 DCL_TYPE (val->type) = FPOINTER;
1586 DCL_TYPE (val->type) = EEPPOINTER;
1589 DCL_TYPE (val->type) = GPOINTER;
1592 /* is there is a symbol associated then */
1593 /* change the type of the symbol as well */
1596 val->sym->type = copyLinkChain (val->type);
1597 val->sym->etype = getSpec (val->sym->type);
1602 /*------------------------------------------------------------------*/
1603 /* checkFunction - does all kinds of check on a function */
1604 /*------------------------------------------------------------------*/
1606 checkFunction (symbol * sym, symbol *csym)
1608 value *exargs, *acargs;
1612 if (getenv("DEBUG_SANITY")) {
1613 fprintf (stderr, "checkFunction: %s ", sym->name);
1616 /* make sure the type is complete and sane */
1617 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1619 /* if not type then some kind of error */
1623 /* if the function has no type then make it return int */
1624 if (!sym->type->next)
1625 sym->type->next = sym->etype = newIntLink ();
1627 /* function cannot return aggregate */
1628 if (IS_AGGREGATE (sym->type->next))
1630 werror (E_FUNC_AGGR, sym->name);
1634 /* function cannot return bit */
1635 if (IS_BITVAR (sym->type->next))
1637 werror (E_FUNC_BIT, sym->name);
1641 /* check if this function is defined as calleeSaves
1642 then mark it as such */
1643 FUNC_CALLEESAVES(sym->type) = inCalleeSaveList (sym->name);
1645 /* if interrupt service routine */
1646 /* then it cannot have arguments */
1647 if (IFFUNC_ARGS(sym->type) && FUNC_ISISR (sym->type))
1649 if (!IS_VOID(FUNC_ARGS(sym->type)->type)) {
1650 werror (E_INT_ARGS, sym->name);
1651 FUNC_ARGS(sym->type)=NULL;
1655 if (!csym && !(csym = findSym (SymbolTab, sym, sym->name)))
1656 return 1; /* not defined nothing more to check */
1658 /* check if body already present */
1659 if (csym && IFFUNC_HASBODY(csym->type))
1661 werror (E_FUNC_BODY, sym->name);
1665 /* check the return value type */
1666 if (compareType (csym->type, sym->type) <= 0)
1668 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1669 werror (W_CONTINUE, "previous definition type ");
1670 printTypeChain (csym->type, stderr);
1671 fprintf (stderr, "\n");
1672 werror (W_CONTINUE, "current definition type ");
1673 printTypeChain (sym->type, stderr);
1674 fprintf (stderr, "\n");
1678 if (FUNC_ISISR (csym->type) != FUNC_ISISR (sym->type))
1680 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1683 if (FUNC_REGBANK (csym->type) != FUNC_REGBANK (sym->type))
1685 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1688 if (IFFUNC_ISNAKED (csym->type) != IFFUNC_ISNAKED (sym->type))
1690 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1693 /* compare expected args with actual args */
1694 exargs = FUNC_ARGS(csym->type);
1695 acargs = FUNC_ARGS(sym->type);
1697 /* for all the expected args do */
1700 exargs = exargs->next, acargs = acargs->next, argCnt++)
1702 if (getenv("DEBUG_SANITY")) {
1703 fprintf (stderr, "checkFunction: %s ", exargs->name);
1705 /* make sure the type is complete and sane */
1706 checkTypeSanity(exargs->etype, exargs->name);
1708 /* If the actual argument is an array, any prototype
1709 * will have modified it to a pointer. Duplicate that
1712 if (IS_AGGREGATE (acargs->type))
1714 checkValue = copyValue (acargs);
1715 aggregateToPointer (checkValue);
1719 checkValue = acargs;
1722 if (compareType (exargs->type, checkValue->type) <= 0)
1724 werror (E_ARG_TYPE, argCnt);
1729 /* if one them ended we have a problem */
1730 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1731 (!exargs && acargs && !IS_VOID (acargs->type)))
1732 werror (E_ARG_COUNT);
1734 /* replace with this defition */
1735 sym->cdef = csym->cdef;
1736 deleteSym (SymbolTab, csym, csym->name);
1737 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1738 if (IS_EXTERN (csym->etype) && !
1739 IS_EXTERN (sym->etype))
1741 addSet (&publics, sym);
1746 /*-----------------------------------------------------------------*/
1747 /* processFuncArgs - does some processing with function args */
1748 /*-----------------------------------------------------------------*/
1750 processFuncArgs (symbol * func, int ignoreName)
1755 /* if this function has variable argument list */
1756 /* then make the function a reentrant one */
1757 if (IFFUNC_HASVARARGS(func->type))
1758 FUNC_ISREENT(func->type)=1;
1760 /* check if this function is defined as calleeSaves
1761 then mark it as such */
1762 FUNC_CALLEESAVES(func->type) = inCalleeSaveList (func->name);
1764 /* loop thru all the arguments */
1765 val = FUNC_ARGS(func->type);
1767 /* if it is void then remove parameters */
1768 if (val && IS_VOID (val->type))
1770 FUNC_ARGS(func->type) = NULL;
1774 /* reset regparm for the port */
1775 (*port->reset_regparms) ();
1776 /* if any of the arguments is an aggregate */
1777 /* change it to pointer to the same type */
1780 /* mark it as a register parameter if
1781 the function does not have VA_ARG
1782 and as port dictates */
1783 if (!IFFUNC_HASVARARGS(func->type) &&
1784 (*port->reg_parm) (val->type))
1786 SPEC_REGPARM (val->etype) = 1;
1789 if (IS_AGGREGATE (val->type))
1791 aggregateToPointer (val);
1797 /* if this is an internal generated function call */
1799 /* ignore --stack-auto for this one, we don't know how it is compiled */
1800 /* simply trust on --int-long-reent or --float-reent */
1801 if (IFFUNC_ISREENT(func->type)) {
1805 /* if this function is reentrant or */
1806 /* automatics r 2b stacked then nothing */
1807 if (IFFUNC_ISREENT (func->type) || options.stackAuto)
1811 val = FUNC_ARGS(func->type);
1816 /* if a symbolname is not given */
1817 /* synthesize a variable name */
1821 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1822 val->sym = newSymbol (val->name, 1);
1823 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1824 val->sym->type = copyLinkChain (val->type);
1825 val->sym->etype = getSpec (val->sym->type);
1826 val->sym->_isparm = 1;
1827 strcpy (val->sym->rname, val->name);
1828 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1829 SPEC_STAT (func->etype);
1830 addSymChain (val->sym);
1833 else /* symbol name given create synth name */
1836 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1837 strcpy (val->sym->rname, val->name);
1838 val->sym->_isparm = 1;
1839 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1840 (options.model != MODEL_SMALL ? xdata : data);
1841 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1842 SPEC_STAT (func->etype);
1848 /*-----------------------------------------------------------------*/
1849 /* isSymbolEqual - compares two symbols return 1 if they match */
1850 /*-----------------------------------------------------------------*/
1852 isSymbolEqual (symbol * dest, symbol * src)
1854 /* if pointers match then equal */
1858 /* if one of them is null then don't match */
1862 /* if both of them have rname match on rname */
1863 if (dest->rname[0] && src->rname[0])
1864 return (!strcmp (dest->rname, src->rname));
1866 /* otherwise match on name */
1867 return (!strcmp (dest->name, src->name));
1870 void PT(sym_link *type)
1872 printTypeChain(type,0);
1874 /*-----------------------------------------------------------------*/
1875 /* printTypeChain - prints the type chain in human readable form */
1876 /*-----------------------------------------------------------------*/
1878 printTypeChain (sym_link * start, FILE * of)
1881 sym_link * type, * search;
1890 fprintf (of, "**err**");
1894 /* print the chain as it is written in the source: */
1895 /* start with the last entry */
1896 for (type = start; type && type->next; type = type->next)
1902 if (DCL_PTR_VOLATILE (type)) {
1903 fprintf (of, "volatile ");
1905 switch (DCL_TYPE (type))
1908 fprintf (of, "function ");
1911 if (DCL_PTR_CONST (type))
1912 fprintf (of, "const ");
1913 fprintf (of, "* generic ");
1916 if (DCL_PTR_CONST (type))
1917 fprintf (of, "const ");
1918 fprintf (of, "* code ");
1921 if (DCL_PTR_CONST (type))
1922 fprintf (of, "const ");
1923 fprintf (of, "* xdata ");
1926 if (DCL_PTR_CONST (type))
1927 fprintf (of, "const ");
1928 fprintf (of, "* eeprom ");
1932 if (DCL_PTR_CONST (type))
1933 fprintf (of, "const ");
1934 fprintf (of, "* near ");
1937 if (DCL_PTR_CONST (type))
1938 fprintf (of, "const ");
1939 fprintf (of, "* idata ");
1942 if (DCL_PTR_CONST (type))
1943 fprintf (of, "const ");
1944 fprintf (of, "* pdata ");
1947 if (DCL_PTR_CONST (type))
1948 fprintf (of, "const ");
1949 fprintf (of, "* unkown ");
1952 fprintf (of, "[] ");
1958 switch (SPEC_SCLS(type))
1960 case S_DATA: fprintf (of, "data "); break;
1961 case S_XDATA: fprintf (of, "xdata "); break;
1962 case S_SFR: fprintf (of, "sfr "); break;
1963 case S_SBIT: fprintf (of, "sbit "); break;
1964 case S_CODE: fprintf (of, "code "); break;
1965 case S_IDATA: fprintf (of, "idata "); break;
1966 case S_PDATA: fprintf (of, "pdata "); break;
1967 case S_LITERAL: fprintf (of, "literal "); break;
1968 case S_STACK: fprintf (of, "stack "); break;
1969 case S_XSTACK: fprintf (of, "xstack "); break;
1970 case S_BIT: fprintf (of, "bit "); break;
1971 case S_EEPROM: fprintf (of, "eeprom "); break;
1975 if (SPEC_VOLATILE (type))
1976 fprintf (of, "volatile ");
1977 if (SPEC_USIGN (type))
1978 fprintf (of, "unsigned ");
1979 if (SPEC_CONST (type))
1980 fprintf (of, "const ");
1982 switch (SPEC_NOUN (type))
1986 fprintf (of, "long ");
1987 fprintf (of, "int");
1991 fprintf (of, "char");
1995 fprintf (of, "void");
1999 fprintf (of, "float");
2003 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2007 fprintf (of, "sbit");
2011 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2015 fprintf (of, "double");
2019 fprintf (of, "unknown type");
2023 /* search entry in list before "type" */
2024 for (search = start; search && search->next != type;)
2025 search = search->next;
2034 /*-----------------------------------------------------------------*/
2035 /* cdbTypeInfo - print the type information for debugger */
2036 /*-----------------------------------------------------------------*/
2038 cdbTypeInfo (sym_link * type, FILE * of)
2040 fprintf (of, "{%d}", getSize (type));
2045 switch (DCL_TYPE (type))
2048 fprintf (of, "DF,");
2051 fprintf (of, "DG,");
2054 fprintf (of, "DC,");
2057 fprintf (of, "DX,");
2060 fprintf (of, "DD,");
2063 fprintf (of, "DI,");
2066 fprintf (of, "DP,");
2069 fprintf (of, "DA,");
2072 fprintf (of, "DA%d,", DCL_ELEM (type));
2080 switch (SPEC_NOUN (type))
2102 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2110 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2117 if (SPEC_USIGN (type))
2125 /*-----------------------------------------------------------------*/
2126 /* cdbSymbol - prints a symbol & its type information for debugger */
2127 /*-----------------------------------------------------------------*/
2129 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2141 fprintf (of, "S:"); /* symbol record */
2142 /* if this is not a structure symbol then
2143 we need to figure out the scope information */
2149 if (IS_STATIC (sym->etype))
2150 fprintf (of, "F%s$", moduleName); /* scope is file */
2152 fprintf (of, "G$"); /* scope is global */
2155 /* symbol is local */
2156 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2159 fprintf (of, "S$"); /* scope is structure */
2161 /* print the name, & mangled name */
2162 fprintf (of, "%s$%d$%d(", sym->name,
2163 sym->level, sym->block);
2165 cdbTypeInfo (sym->type, of);
2168 /* print the address space */
2169 map = SPEC_OCLS (sym->etype);
2170 fprintf (of, "%c,%d,%d",
2171 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2173 /* if assigned to registers then output register names */
2174 /* if this is a function then print
2175 if is it an interrupt routine & interrupt number
2176 and the register bank it is using */
2178 fprintf (of, ",%d,%d,%d", FUNC_ISISR (sym->type),
2179 FUNC_INTNO (sym->type), FUNC_REGBANK (sym->type));
2180 /* alternate location to find this symbol @ : eg registers
2187 /*-----------------------------------------------------------------*/
2188 /* cdbStruct - print a structure for debugger */
2189 /*-----------------------------------------------------------------*/
2191 cdbStruct (structdef * sdef, int block, FILE * of,
2192 int inStruct, char *tag)
2197 /* if block # then must have function scope */
2198 fprintf (of, "F%s$", moduleName);
2199 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2200 for (sym = sdef->fields; sym; sym = sym->next)
2202 fprintf (of, "({%d}", sym->offset);
2203 cdbSymbol (sym, of, TRUE, FALSE);
2211 /*------------------------------------------------------------------*/
2212 /* cdbStructBlock - calls struct printing for a blcks */
2213 /*------------------------------------------------------------------*/
2215 cdbStructBlock (int block, FILE * of)
2218 bucket **table = StructTab;
2222 /* go thru the entire table */
2223 for (i = 0; i < 256; i++)
2225 for (chain = table[i]; chain; chain = chain->next)
2227 if (chain->block >= block)
2229 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2235 /*-----------------------------------------------------------------*/
2236 /* powof2 - returns power of two for the number if number is pow 2 */
2237 /*-----------------------------------------------------------------*/
2239 powof2 (unsigned long num)
2252 if (n1s > 1 || nshifts == 0)
2268 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2269 symbol *__muldiv[3][3][2];
2270 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2271 sym_link *__multypes[3][2];
2272 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2273 symbol *__conv[2][3][2];
2274 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2275 symbol *__rlrr[2][3][2];
2277 sym_link *floatType;
2280 _mangleFunctionName(char *in)
2282 if (port->getMangledFunctionName)
2284 return port->getMangledFunctionName(in);
2292 /*-----------------------------------------------------------------*/
2293 /* initCSupport - create functions for C support routines */
2294 /*-----------------------------------------------------------------*/
2298 const char *smuldivmod[] =
2302 const char *sbwd[] =
2304 "char", "int", "long"
2310 const char *srlrr[] =
2315 int bwd, su, muldivmod, tofrom, rlrr;
2317 if (getenv("SDCC_NO_C_SUPPORT")) {
2318 /* for debugging only */
2322 floatType = newFloatLink ();
2324 for (bwd = 0; bwd < 3; bwd++)
2341 __multypes[bwd][0] = l;
2342 __multypes[bwd][1] = copyLinkChain (l);
2343 SPEC_USIGN (__multypes[bwd][1]) = 1;
2346 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2347 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2348 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2349 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2350 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2351 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2352 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2353 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2354 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2355 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2357 for (tofrom = 0; tofrom < 2; tofrom++)
2359 for (bwd = 0; bwd < 3; bwd++)
2361 for (su = 0; su < 2; su++)
2365 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2366 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2370 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2371 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2377 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2379 for (bwd = 0; bwd < 3; bwd++)
2381 for (su = 0; su < 2; su++)
2383 sprintf (buffer, "_%s%s%s",
2384 smuldivmod[muldivmod],
2387 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2388 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2393 for (rlrr = 0; rlrr < 2; rlrr++)
2395 for (bwd = 0; bwd < 3; bwd++)
2397 for (su = 0; su < 2; su++)
2399 sprintf (buffer, "_%s%s%s",
2403 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2404 FUNC_NONBANKED (__rlrr[rlrr][bwd][su]->type) = 1;