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)
542 sym_link *symlink=dest;
545 if (!IS_SPEC(dest)) {
546 // This can happen for pointers, find the end type
547 while (dest && !IS_SPEC(dest))
551 // here we have a declarator as source, reverse them
555 while (dest && !IS_SPEC(dest)) {
556 // and find the specifier
564 if (!IS_SPEC(dest) || !IS_SPEC(src)) {
565 werror (E_INTERNAL_ERROR, __FILE__, __LINE__, "cannot merge declarator");
569 if (getenv("DEBUG_mergeSpec")) {
570 fprintf (stderr, "mergeSpec: \"%s\"\n", name);
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_ABSA (dest) |= SPEC_ABSA (src);
617 SPEC_RENT (dest) |= SPEC_RENT (src);
618 SPEC_INTN (dest) |= SPEC_INTN (src);
619 SPEC_BANK (dest) |= SPEC_BANK (src);
620 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
621 SPEC_CRTCL (dest) |= SPEC_CRTCL (src);
622 SPEC_ADDR (dest) |= SPEC_ADDR (src);
623 SPEC_OCLS (dest) = SPEC_OCLS (src);
624 SPEC_BLEN (dest) |= SPEC_BLEN (src);
625 SPEC_BSTR (dest) |= SPEC_BSTR (src);
626 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
627 SPEC_NONBANKED (dest) |= SPEC_NONBANKED (src);
628 SPEC_NAKED (dest) |= SPEC_NAKED (src);
630 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
631 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
636 /*------------------------------------------------------------------*/
637 /* cloneSpec - copies the entire spec and returns a new spec */
638 /*------------------------------------------------------------------*/
640 cloneSpec (sym_link * src)
644 /* go thru chain till we find the specifier */
645 while (src && src->class != SPECIFIER)
649 memcpy (spec, src, sizeof (sym_link));
653 /*------------------------------------------------------------------*/
654 /* genSymName - generates and returns a name used for anonymous vars */
655 /*------------------------------------------------------------------*/
657 genSymName (int level)
659 static int gCount = 0;
660 static char gname[SDCC_NAME_MAX + 1];
662 sprintf (gname, "__%04d%04d", level, gCount++);
666 /*------------------------------------------------------------------*/
667 /* getSpec - returns the specifier part from a declaration chain */
668 /*------------------------------------------------------------------*/
670 getSpec (sym_link * p)
675 while (p && !(IS_SPEC (p)))
681 /*------------------------------------------------------------------*/
682 /* newCharLink() - creates an char type */
683 /*------------------------------------------------------------------*/
690 p->class = SPECIFIER;
691 SPEC_NOUN (p) = V_CHAR;
696 /*------------------------------------------------------------------*/
697 /* newFloatLink - a new Float type */
698 /*------------------------------------------------------------------*/
705 p->class = SPECIFIER;
706 SPEC_NOUN (p) = V_FLOAT;
711 /*------------------------------------------------------------------*/
712 /* newLongLink() - new long type */
713 /*------------------------------------------------------------------*/
720 p->class = SPECIFIER;
721 SPEC_NOUN (p) = V_INT;
727 /*------------------------------------------------------------------*/
728 /* newIntLink() - creates an int type */
729 /*------------------------------------------------------------------*/
736 p->class = SPECIFIER;
737 SPEC_NOUN (p) = V_INT;
742 /*------------------------------------------------------------------*/
743 /* getSize - returns size of a type chain in bits */
744 /*------------------------------------------------------------------*/
746 getSize (sym_link * p)
748 /* if nothing return 0 */
752 { /* if this is the specifier then */
753 switch (SPEC_NOUN (p))
754 { /* depending on the specifier type */
756 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
764 return SPEC_STRUCT (p)->size;
770 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
776 /* this is a specifier */
777 switch (DCL_TYPE (p))
782 return DCL_ELEM (p) * getSize (p->next);
799 /*------------------------------------------------------------------*/
800 /* bitsForType - returns # of bits required to store this type */
801 /*------------------------------------------------------------------*/
803 bitsForType (sym_link * p)
805 /* if nothing return 0 */
810 { /* if this is the specifier then */
812 switch (SPEC_NOUN (p))
813 { /* depending on the specifier type */
815 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
817 return FLOATSIZE * 8;
823 return SPEC_STRUCT (p)->size * 8;
829 return SPEC_BLEN (p);
835 /* this is a specifier */
836 switch (DCL_TYPE (p))
841 return DCL_ELEM (p) * getSize (p->next) * 8;
845 return (PTRSIZE * 8);
849 return (FPTRSIZE * 8);
851 return (GPTRSIZE * 8);
858 /*------------------------------------------------------------------*/
859 /* copySymbolChain - copies a symbol chain */
860 /*------------------------------------------------------------------*/
862 copySymbolChain (symbol * src)
869 dest = copySymbol (src);
870 dest->next = copySymbolChain (src->next);
874 /*------------------------------------------------------------------*/
875 /* copySymbol - makes a copy of a symbol */
876 /*------------------------------------------------------------------*/
878 copySymbol (symbol * src)
885 dest = newSymbol (src->name, src->level);
886 memcpy (dest, src, sizeof (symbol));
887 dest->level = src->level;
888 dest->block = src->block;
889 dest->ival = copyIlist (src->ival);
890 dest->type = copyLinkChain (src->type);
891 dest->etype = getSpec (dest->type);
893 dest->args = copyValueChain (src->args);
894 dest->key = src->key;
895 dest->calleeSave = src->calleeSave;
896 dest->allocreq = src->allocreq;
900 /*------------------------------------------------------------------*/
901 /* reverseSyms - reverses the links for a symbol chain */
902 /*------------------------------------------------------------------*/
904 reverseSyms (symbol * sym)
906 symbol *prev, *curr, *next;
921 sym->next = (void *) NULL;
925 /*------------------------------------------------------------------*/
926 /* reverseLink - reverses the links for a type chain */
927 /*------------------------------------------------------------------*/
929 reverseLink (sym_link * type)
931 sym_link *prev, *curr, *next;
946 type->next = (void *) NULL;
950 /*------------------------------------------------------------------*/
951 /* addSymChain - adds a symbol chain to the symboltable */
952 /*------------------------------------------------------------------*/
954 addSymChain (symbol * symHead)
956 symbol *sym = symHead;
959 for (; sym != NULL; sym = sym->next)
962 checkTypeSanity(sym->etype, sym->name);
964 /* if already exists in the symbol table then check if
965 one of them is an extern definition if yes then
966 then check if the type match, if the types match then
967 delete the current entry and add the new entry */
968 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
969 csym->level == sym->level) {
971 /* one definition extern ? */
972 if (IS_EXTERN (csym->etype) || IS_EXTERN (sym->etype)) {
973 /* do types match ? */
974 if (compareType (csym->type, sym->type) != 1) {
976 werror (E_EXTERN_MISMATCH, csym->name);
979 /* delete current entry */
980 deleteSym (SymbolTab, csym, csym->name);
983 werror (E_DUPLICATE, sym->name);
989 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
994 /*------------------------------------------------------------------*/
995 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
996 /*------------------------------------------------------------------*/
998 funcInChain (sym_link * lnk)
1009 /*------------------------------------------------------------------*/
1010 /* structElemType - returns the type info of a sturct member */
1011 /*------------------------------------------------------------------*/
1013 structElemType (sym_link * stype, value * id, value ** argsp)
1015 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
1016 sym_link *type, *etype;
1017 sym_link *petype = getSpec (stype);
1022 /* look for the id */
1025 if (strcmp (fields->rname, id->name) == 0)
1029 *argsp = fields->args;
1031 type = copyLinkChain (fields->type);
1032 etype = getSpec (type);
1033 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1034 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1037 fields = fields->next;
1039 werror (E_NOT_MEMBER, id->name);
1044 /*------------------------------------------------------------------*/
1045 /* getStructElement - returns element of a tructure definition */
1046 /*------------------------------------------------------------------*/
1048 getStructElement (structdef * sdef, symbol * sym)
1052 for (field = sdef->fields; field; field = field->next)
1053 if (strcmp (field->name, sym->name) == 0)
1056 werror (E_NOT_MEMBER, sym->name);
1058 return sdef->fields;
1061 /*------------------------------------------------------------------*/
1062 /* compStructSize - computes the size of a structure */
1063 /*------------------------------------------------------------------*/
1065 compStructSize (int su, structdef * sdef)
1067 int sum = 0, usum = 0;
1071 /* for the identifiers */
1072 loop = sdef->fields;
1075 /* create the internal name for this variable */
1076 sprintf (loop->rname, "_%s", loop->name);
1077 loop->offset = (su == UNION ? sum = 0 : sum);
1078 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1080 /* if this is a bit field */
1083 /* change it to a unsigned bit */
1084 SPEC_NOUN (loop->etype) = V_BIT;
1085 SPEC_USIGN (loop->etype) = 1;
1086 /* check if this fit into the remaining */
1087 /* bits of this byte else align it to the */
1088 /* next byte boundary */
1089 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1090 SPEC_BSTR (loop->etype) = bitOffset;
1091 if ((bitOffset += (loop->bitVar % 8)) == 8)
1094 else /* does not fit */ {
1096 SPEC_BSTR (loop->etype) = bitOffset;
1097 sum += (loop->bitVar / 8);
1098 bitOffset += (loop->bitVar % 8);
1100 /* if this is the last field then pad */
1101 if (!loop->next && bitOffset && bitOffset != 8) {
1107 checkDecl (loop, 1);
1108 sum += getSize (loop->type);
1111 /* if function then do the arguments for it */
1112 if (funcInChain (loop->type)) {
1113 processFuncArgs (loop, 1);
1118 /* if this is not a bitfield but the */
1119 /* previous one was and did not take */
1120 /* the whole byte then pad the rest */
1121 if ((loop && !loop->bitVar) && bitOffset) {
1126 /* if union then size = sizeof larget field */
1128 usum = max (usum, sum);
1132 return (su == UNION ? usum : sum);
1135 /*------------------------------------------------------------------*/
1136 /* checkSClass - check the storage class specification */
1137 /*------------------------------------------------------------------*/
1139 checkSClass (symbol * sym, int isProto)
1141 if (getenv("DEBUG_SANITY")) {
1142 fprintf (stderr, "checkSClass: %s \n", sym->name);
1144 if (strcmp(sym->name, "_testsGlobal")==0) {
1148 /* type is literal can happen foe enums change
1150 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1151 SPEC_SCLS (sym->etype) = S_AUTO;
1153 /* if sfr or sbit then must also be */
1154 /* volatile the initial value will be xlated */
1155 /* to an absolute address */
1156 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1157 SPEC_SCLS (sym->etype) == S_SFR)
1159 SPEC_VOLATILE (sym->etype) = 1;
1160 /* if initial value given */
1163 SPEC_ABSA (sym->etype) = 1;
1164 SPEC_ADDR (sym->etype) =
1165 (int) list2int (sym->ival);
1170 /* if absolute address given then it mark it as
1172 if (IS_ABSOLUTE (sym->etype))
1173 SPEC_VOLATILE (sym->etype) = 1;
1175 /* global variables declared const put into code */
1176 if (sym->level == 0 &&
1177 SPEC_CONST (sym->etype)) {
1178 SPEC_SCLS (sym->etype) = S_CODE;
1181 /* global variable in code space is a constant */
1182 if (sym->level == 0 &&
1183 SPEC_SCLS (sym->etype) == S_CODE &&
1185 SPEC_CONST (sym->etype) = 1;
1188 /* if bit variable then no storage class can be */
1189 /* specified since bit is already a storage */
1190 if (IS_BITVAR (sym->etype) &&
1191 (SPEC_SCLS (sym->etype) != S_FIXED &&
1192 SPEC_SCLS (sym->etype) != S_SBIT &&
1193 SPEC_SCLS (sym->etype) != S_BIT)
1196 werror (E_BITVAR_STORAGE, sym->name);
1197 SPEC_SCLS (sym->etype) = S_FIXED;
1200 /* extern variables cannot be initialized */
1201 if (IS_EXTERN (sym->etype) && sym->ival)
1203 werror (E_EXTERN_INIT, sym->name);
1207 /* if this is an atomatic symbol */
1208 if (sym->level && (options.stackAuto || reentrant)) {
1209 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1210 SPEC_SCLS (sym->etype) == S_FIXED ||
1211 SPEC_SCLS (sym->etype) == S_REGISTER ||
1212 SPEC_SCLS (sym->etype) == S_STACK ||
1213 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1214 SPEC_SCLS (sym->etype) = S_AUTO;
1216 /* storage class may only be specified for statics */
1217 if (!IS_STATIC(sym->etype)) {
1218 werror (E_AUTO_ASSUMED, sym->name);
1223 /* automatic symbols cannot be given */
1224 /* an absolute address ignore it */
1226 SPEC_ABSA (sym->etype) &&
1227 (options.stackAuto || reentrant))
1229 werror (E_AUTO_ABSA, sym->name);
1230 SPEC_ABSA (sym->etype) = 0;
1233 /* arrays & pointers cannot be defined for bits */
1234 /* SBITS or SFRs or BIT */
1235 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1236 (SPEC_NOUN (sym->etype) == V_BIT ||
1237 SPEC_NOUN (sym->etype) == V_SBIT ||
1238 SPEC_SCLS (sym->etype) == S_SFR))
1239 werror (E_BIT_ARRAY, sym->name);
1241 /* if this is a bit|sbit then set length & start */
1242 if (SPEC_NOUN (sym->etype) == V_BIT ||
1243 SPEC_NOUN (sym->etype) == V_SBIT)
1245 SPEC_BLEN (sym->etype) = 1;
1246 SPEC_BSTR (sym->etype) = 0;
1250 /* variables declared in CODE space must have */
1251 /* initializers if not an extern */
1252 if (SPEC_SCLS (sym->etype) == S_CODE &&
1253 sym->ival == NULL &&
1255 port->mem.code_ro &&
1256 !IS_EXTERN (sym->etype) &&
1257 !funcInChain (sym->type))
1258 werror (E_CODE_NO_INIT, sym->name);
1261 /* if parameter or local variable then change */
1262 /* the storage class to reflect where the var will go */
1263 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1264 !IS_STATIC(sym->etype))
1266 if (options.stackAuto || (currFunc && IS_RENT (currFunc->etype)))
1268 SPEC_SCLS (sym->etype) = (options.useXstack ?
1269 S_XSTACK : S_STACK);
1273 /* hack-o-matic! I see no reason why the useXstack option should ever
1274 * control this allcoation, but the code was originally that way, and
1275 * changing it for non-390 ports breaks the compiler badly.
1277 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1278 SPEC_SCLS (sym->etype) = (useXdata ?
1284 /*------------------------------------------------------------------*/
1285 /* changePointer - change pointer to functions */
1286 /*------------------------------------------------------------------*/
1288 changePointer (symbol * sym)
1292 /* go thru the chain of declarations */
1293 /* if we find a pointer to a function */
1294 /* unconditionally change it to a ptr */
1296 for (p = sym->type; p; p = p->next)
1298 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1299 DCL_TYPE (p) = GPOINTER;
1300 if (IS_PTR (p) && IS_FUNC (p->next))
1301 DCL_TYPE (p) = CPOINTER;
1305 /*------------------------------------------------------------------*/
1306 /* checkDecl - does semantic validation of a declaration */
1307 /*------------------------------------------------------------------*/
1309 checkDecl (symbol * sym, int isProto)
1312 checkSClass (sym, isProto); /* check the storage class */
1313 changePointer (sym); /* change pointers if required */
1315 /* if this is an array without any dimension
1316 then update the dimension from the initial value */
1317 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1318 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1323 /*------------------------------------------------------------------*/
1324 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1325 /*------------------------------------------------------------------*/
1327 copyLinkChain (sym_link * p)
1329 sym_link *head, *curr, *loop;
1332 head = loop = (curr ? newLink () : (void *) NULL);
1335 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1336 loop->next = (curr->next ? newLink () : (void *) NULL);
1345 /*------------------------------------------------------------------*/
1346 /* cleanUpBlock - cleansup the symbol table specified for all the */
1347 /* symbols in the given block */
1348 /*------------------------------------------------------------------*/
1350 cleanUpBlock (bucket ** table, int block)
1355 /* go thru the entire table */
1356 for (i = 0; i < 256; i++)
1358 for (chain = table[i]; chain; chain = chain->next)
1360 if (chain->block >= block)
1362 deleteSym (table, chain->sym, chain->name);
1368 /*------------------------------------------------------------------*/
1369 /* cleanUpLevel - cleansup the symbol table specified for all the */
1370 /* symbols in the given level */
1371 /*------------------------------------------------------------------*/
1373 cleanUpLevel (bucket ** table, int level)
1378 /* go thru the entire table */
1379 for (i = 0; i < 256; i++)
1381 for (chain = table[i]; chain; chain = chain->next)
1383 if (chain->level >= level)
1385 deleteSym (table, chain->sym, chain->name);
1391 /*------------------------------------------------------------------*/
1392 /* computeType - computes the resultant type from two types */
1393 /*------------------------------------------------------------------*/
1395 computeType (sym_link * type1, sym_link * type2)
1399 sym_link *etype1 = getSpec (type1);
1400 sym_link *etype2 = getSpec (type2);
1402 /* if one of them is a float then result is a float */
1403 /* here we assume that the types passed are okay */
1404 /* and can be cast to one another */
1405 /* which ever is greater in size */
1406 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1407 rType = newFloatLink ();
1409 /* if only one of them is a bit variable
1410 then the other one prevails */
1411 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1412 rType = copyLinkChain (type2);
1413 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1414 rType = copyLinkChain (type1);
1416 /* if one of them is a pointer then that
1419 rType = copyLinkChain (type1);
1420 else if (IS_PTR (type2))
1421 rType = copyLinkChain (type2);
1422 else if (getSize (type1) > getSize (type2))
1423 rType = copyLinkChain (type1);
1425 rType = copyLinkChain (type2);
1427 reType = getSpec (rType);
1429 /* if either of them unsigned but not val then make this unsigned */
1430 if (((!IS_LITERAL(type1) && SPEC_USIGN (etype1)) ||
1431 (!IS_LITERAL(type2) && SPEC_USIGN (etype2))) &&
1433 SPEC_USIGN (reType) = 1;
1435 SPEC_USIGN (reType) = 0;
1437 /* if result is a literal then make not so */
1438 if (IS_LITERAL (reType))
1439 SPEC_SCLS (reType) = S_REGISTER;
1444 /*--------------------------------------------------------------------*/
1445 /* compareType - will do type check return 1 if match, -1 if castable */
1446 /*--------------------------------------------------------------------*/
1448 compareType (sym_link * dest, sym_link * src)
1459 /* if dest is a declarator then */
1464 if (DCL_TYPE (src) == DCL_TYPE (dest))
1465 return compareType (dest->next, src->next);
1466 if (IS_PTR (src) && IS_GENPTR (dest))
1468 if (IS_PTR (dest) && IS_ARRAY (src)) {
1469 value *val=aggregateToPointer (valFromType(src));
1470 int res=compareType (dest, val->type);
1471 Safe_free(val->type);
1475 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1476 return compareType (dest->next, src);
1479 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1485 /* if one is a specifier and the other is not */
1486 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1487 (IS_SPEC (dest) && !IS_SPEC (src)))
1490 /* if one of them is a void then ok */
1491 if (SPEC_NOUN (dest) == V_VOID &&
1492 SPEC_NOUN (src) != V_VOID)
1495 if (SPEC_NOUN (dest) != V_VOID &&
1496 SPEC_NOUN (src) == V_VOID)
1499 /* if they are both bitfields then if the lengths
1500 and starts don't match */
1501 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1502 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1503 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1506 /* it is a specifier */
1507 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1509 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1510 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1511 getSize (dest) == getSize (src))
1513 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1518 else if (IS_STRUCT (dest))
1520 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1525 if (SPEC_LONG (dest) != SPEC_LONG (src))
1528 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1534 /*------------------------------------------------------------------*/
1535 /* inCalleeSaveList - return 1 if found in callee save list */
1536 /*------------------------------------------------------------------*/
1538 inCalleeSaveList (char *s)
1542 for (i = 0; options.calleeSaves[i]; i++)
1543 if (strcmp (options.calleeSaves[i], s) == 0)
1549 /*-----------------------------------------------------------------*/
1550 /* aggregateToPointer: change an agggregate type function */
1551 /* argument to a pointer to that type. */
1552 /*-----------------------------------------------------------------*/
1554 aggregateToPointer (value * val)
1556 if (IS_AGGREGATE (val->type))
1558 /* if this is a structure */
1559 /* then we need to add a new link */
1560 if (IS_STRUCT (val->type))
1562 /* first lets add DECLARATOR type */
1563 sym_link *p = val->type;
1565 werror (W_STRUCT_AS_ARG, val->name);
1566 val->type = newLink ();
1567 val->type->next = p;
1570 /* change to a pointer depending on the */
1571 /* storage class specified */
1572 switch (SPEC_SCLS (val->etype))
1575 DCL_TYPE (val->type) = IPOINTER;
1578 DCL_TYPE (val->type) = PPOINTER;
1581 if (TARGET_IS_DS390)
1583 /* The AUTO and REGISTER classes should probably
1584 * also become generic pointers, but I haven't yet
1585 * devised a test case for that.
1587 DCL_TYPE (val->type) = GPOINTER;
1590 if (options.model==MODEL_LARGE) {
1591 DCL_TYPE (val->type) = FPOINTER;
1598 DCL_TYPE (val->type) = POINTER;
1601 DCL_TYPE (val->type) = CPOINTER;
1604 DCL_TYPE (val->type) = FPOINTER;
1607 DCL_TYPE (val->type) = EEPPOINTER;
1610 DCL_TYPE (val->type) = GPOINTER;
1613 /* is there is a symbol associated then */
1614 /* change the type of the symbol as well */
1617 val->sym->type = copyLinkChain (val->type);
1618 val->sym->etype = getSpec (val->sym->type);
1623 /*------------------------------------------------------------------*/
1624 /* checkFunction - does all kinds of check on a function */
1625 /*------------------------------------------------------------------*/
1627 checkFunction (symbol * sym)
1630 value *exargs, *acargs;
1634 if (getenv("DEBUG_SANITY")) {
1635 fprintf (stderr, "checkFunction: %s ", sym->name);
1638 /* make sure the type is complete and sane */
1639 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1641 /* if not type then some kind of error */
1645 /* if the function has no type then make it return int */
1646 if (!sym->type->next)
1647 sym->type->next = sym->etype = newIntLink ();
1649 /* function cannot return aggregate */
1650 if (IS_AGGREGATE (sym->type->next))
1652 werror (E_FUNC_AGGR, sym->name);
1656 /* function cannot return bit */
1657 if (IS_BITVAR (sym->type->next))
1659 werror (E_FUNC_BIT, sym->name);
1663 /* check if this function is defined as calleeSaves
1664 then mark it as such */
1665 sym->calleeSave = inCalleeSaveList (sym->name);
1667 /* if interrupt service routine */
1668 /* then it cannot have arguments */
1669 if (sym->args && IS_ISR (sym->etype) && !IS_VOID (sym->args->type))
1671 werror (E_INT_ARGS, sym->name);
1675 if (!(csym = findSym (SymbolTab, sym, sym->name)))
1676 return 1; /* not defined nothing more to check */
1678 /* check if body already present */
1679 if (csym && csym->fbody)
1681 werror (E_FUNC_BODY, sym->name);
1685 /* check the return value type */
1686 if (compareType (csym->type, sym->type) <= 0)
1688 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1689 werror (W_CONTINUE, "previous definition type ");
1690 printTypeChain (csym->type, stderr);
1691 fprintf (stderr, "\n");
1692 werror (W_CONTINUE, "current definition type ");
1693 printTypeChain (sym->type, stderr);
1694 fprintf (stderr, "\n");
1698 if (SPEC_INTRTN (csym->etype) != SPEC_INTRTN (sym->etype))
1700 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1703 if (SPEC_BANK (csym->etype) != SPEC_BANK (sym->etype))
1705 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1708 if (SPEC_NAKED (csym->etype) != SPEC_NAKED (sym->etype))
1710 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1713 /* compare expected args with actual args */
1714 exargs = csym->args;
1717 /* for all the expected args do */
1720 exargs = exargs->next, acargs = acargs->next, argCnt++)
1722 if (getenv("DEBUG_SANITY")) {
1723 fprintf (stderr, "checkFunction: %s ", exargs->name);
1725 /* make sure the type is complete and sane */
1726 checkTypeSanity(exargs->etype, exargs->name);
1728 /* If the actual argument is an array, any prototype
1729 * will have modified it to a pointer. Duplicate that
1732 if (IS_AGGREGATE (acargs->type))
1734 checkValue = copyValue (acargs);
1735 aggregateToPointer (checkValue);
1739 checkValue = acargs;
1742 if (compareType (exargs->type, checkValue->type) <= 0)
1744 werror (E_ARG_TYPE, argCnt);
1749 /* if one them ended we have a problem */
1750 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1751 (!exargs && acargs && !IS_VOID (acargs->type)))
1752 werror (E_ARG_COUNT);
1754 /* replace with this defition */
1755 sym->cdef = csym->cdef;
1756 deleteSym (SymbolTab, csym, csym->name);
1757 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1758 if (IS_EXTERN (csym->etype) && !
1759 IS_EXTERN (sym->etype))
1761 addSet (&publics, sym);
1766 /*-----------------------------------------------------------------*/
1767 /* processFuncArgs - does some processing with function args */
1768 /*-----------------------------------------------------------------*/
1770 processFuncArgs (symbol * func, int ignoreName)
1775 /* if this function has variable argument list */
1776 /* then make the function a reentrant one */
1778 SPEC_RENT (func->etype) = 1;
1780 /* check if this function is defined as calleeSaves
1781 then mark it as such */
1782 func->calleeSave = inCalleeSaveList (func->name);
1784 val = func->args; /* loop thru all the arguments */
1786 /* if it is void then remove parameters */
1787 if (val && IS_VOID (val->type))
1793 /* reset regparm for the port */
1794 (*port->reset_regparms) ();
1795 /* if any of the arguments is an aggregate */
1796 /* change it to pointer to the same type */
1799 /* mark it as a register parameter if
1800 the function does not have VA_ARG
1801 and as port dictates */
1802 if (!func->hasVargs &&
1803 (*port->reg_parm) (val->type))
1805 SPEC_REGPARM (val->etype) = 1;
1808 if (IS_AGGREGATE (val->type))
1810 aggregateToPointer (val);
1816 /* if this is an internal generated function call */
1818 /* ignore --stack-auto for this one, we don't know how it is compiled */
1819 /* simply trust on --int-long-reent or --float-reent */
1820 if (IS_RENT(func->etype)) {
1824 /* if this function is reentrant or */
1825 /* automatics r 2b stacked then nothing */
1826 if (IS_RENT (func->etype) || options.stackAuto)
1835 /* if a symbolname is not given */
1836 /* synthesize a variable name */
1840 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1841 val->sym = newSymbol (val->name, 1);
1842 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1843 val->sym->type = copyLinkChain (val->type);
1844 val->sym->etype = getSpec (val->sym->type);
1845 val->sym->_isparm = 1;
1846 strcpy (val->sym->rname, val->name);
1847 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1848 SPEC_STAT (func->etype);
1849 addSymChain (val->sym);
1852 else /* symbol name given create synth name */
1855 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1856 strcpy (val->sym->rname, val->name);
1857 val->sym->_isparm = 1;
1858 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1859 (options.model != MODEL_SMALL ? xdata : data);
1860 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1861 SPEC_STAT (func->etype);
1867 /*-----------------------------------------------------------------*/
1868 /* isSymbolEqual - compares two symbols return 1 if they match */
1869 /*-----------------------------------------------------------------*/
1871 isSymbolEqual (symbol * dest, symbol * src)
1873 /* if pointers match then equal */
1877 /* if one of them is null then don't match */
1881 /* if both of them have rname match on rname */
1882 if (dest->rname[0] && src->rname[0])
1883 return (!strcmp (dest->rname, src->rname));
1885 /* otherwise match on name */
1886 return (!strcmp (dest->name, src->name));
1889 void PT(sym_link *type)
1891 printTypeChain(type,0);
1893 /*-----------------------------------------------------------------*/
1894 /* printTypeChain - prints the type chain in human readable form */
1895 /*-----------------------------------------------------------------*/
1897 printTypeChain (sym_link * start, FILE * of)
1900 sym_link * type, * search;
1909 fprintf (of, "**err**");
1913 /* print the chain as it is written in the source: */
1914 /* start with the last entry */
1915 for (type = start; type && type->next; type = type->next)
1921 if (DCL_PTR_VOLATILE (type)) {
1922 fprintf (of, "volatile ");
1924 switch (DCL_TYPE (type))
1927 fprintf (of, "function ");
1930 if (DCL_PTR_CONST (type))
1931 fprintf (of, "const ");
1932 fprintf (of, "* generic ");
1935 if (DCL_PTR_CONST (type))
1936 fprintf (of, "const ");
1937 fprintf (of, "* code ");
1940 if (DCL_PTR_CONST (type))
1941 fprintf (of, "const ");
1942 fprintf (of, "* xdata ");
1945 if (DCL_PTR_CONST (type))
1946 fprintf (of, "const ");
1947 fprintf (of, "* eeprom ");
1951 if (DCL_PTR_CONST (type))
1952 fprintf (of, "const ");
1953 fprintf (of, "* near ");
1956 if (DCL_PTR_CONST (type))
1957 fprintf (of, "const ");
1958 fprintf (of, "* idata ");
1961 if (DCL_PTR_CONST (type))
1962 fprintf (of, "const ");
1963 fprintf (of, "* pdata ");
1966 if (DCL_PTR_CONST (type))
1967 fprintf (of, "const ");
1968 fprintf (of, "* unkown ");
1971 fprintf (of, "[] ");
1977 switch (SPEC_SCLS(type))
1979 case S_DATA: fprintf (of, "data "); break;
1980 case S_XDATA: fprintf (of, "xdata "); break;
1981 case S_SFR: fprintf (of, "sfr "); break;
1982 case S_SBIT: fprintf (of, "sbit "); break;
1983 case S_CODE: fprintf (of, "code "); break;
1984 case S_IDATA: fprintf (of, "idata "); break;
1985 case S_PDATA: fprintf (of, "pdata "); break;
1986 case S_LITERAL: fprintf (of, "literal "); break;
1987 case S_STACK: fprintf (of, "stack "); break;
1988 case S_XSTACK: fprintf (of, "xstack "); break;
1989 case S_BIT: fprintf (of, "bit "); break;
1990 case S_EEPROM: fprintf (of, "eeprom "); break;
1994 if (SPEC_VOLATILE (type))
1995 fprintf (of, "volatile ");
1996 if (SPEC_USIGN (type))
1997 fprintf (of, "unsigned ");
1998 if (SPEC_CONST (type))
1999 fprintf (of, "const ");
2001 switch (SPEC_NOUN (type))
2005 fprintf (of, "long ");
2006 fprintf (of, "int");
2010 fprintf (of, "char");
2014 fprintf (of, "void");
2018 fprintf (of, "float");
2022 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2026 fprintf (of, "sbit");
2030 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2034 fprintf (of, "double");
2038 fprintf (of, "unknown type");
2042 /* search entry in list before "type" */
2043 for (search = start; search && search->next != type;)
2044 search = search->next;
2053 /*-----------------------------------------------------------------*/
2054 /* cdbTypeInfo - print the type information for debugger */
2055 /*-----------------------------------------------------------------*/
2057 cdbTypeInfo (sym_link * type, FILE * of)
2059 fprintf (of, "{%d}", getSize (type));
2064 switch (DCL_TYPE (type))
2067 fprintf (of, "DF,");
2070 fprintf (of, "DG,");
2073 fprintf (of, "DC,");
2076 fprintf (of, "DX,");
2079 fprintf (of, "DD,");
2082 fprintf (of, "DI,");
2085 fprintf (of, "DP,");
2088 fprintf (of, "DA,");
2091 fprintf (of, "DA%d,", DCL_ELEM (type));
2099 switch (SPEC_NOUN (type))
2121 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2129 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2136 if (SPEC_USIGN (type))
2144 /*-----------------------------------------------------------------*/
2145 /* cdbSymbol - prints a symbol & its type information for debugger */
2146 /*-----------------------------------------------------------------*/
2148 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2160 fprintf (of, "S:"); /* symbol record */
2161 /* if this is not a structure symbol then
2162 we need to figure out the scope information */
2168 if (IS_STATIC (sym->etype))
2169 fprintf (of, "F%s$", moduleName); /* scope is file */
2171 fprintf (of, "G$"); /* scope is global */
2174 /* symbol is local */
2175 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2178 fprintf (of, "S$"); /* scope is structure */
2180 /* print the name, & mangled name */
2181 fprintf (of, "%s$%d$%d(", sym->name,
2182 sym->level, sym->block);
2184 cdbTypeInfo (sym->type, of);
2187 /* print the address space */
2188 map = SPEC_OCLS (sym->etype);
2189 fprintf (of, "%c,%d,%d",
2190 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2192 /* if assigned to registers then output register names */
2193 /* if this is a function then print
2194 if is it an interrupt routine & interrupt number
2195 and the register bank it is using */
2197 fprintf (of, ",%d,%d,%d", SPEC_INTRTN (sym->etype),
2198 SPEC_INTN (sym->etype), SPEC_BANK (sym->etype));
2199 /* alternate location to find this symbol @ : eg registers
2206 /*-----------------------------------------------------------------*/
2207 /* cdbStruct - print a structure for debugger */
2208 /*-----------------------------------------------------------------*/
2210 cdbStruct (structdef * sdef, int block, FILE * of,
2211 int inStruct, char *tag)
2216 /* if block # then must have function scope */
2217 fprintf (of, "F%s$", moduleName);
2218 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2219 for (sym = sdef->fields; sym; sym = sym->next)
2221 fprintf (of, "({%d}", sym->offset);
2222 cdbSymbol (sym, of, TRUE, FALSE);
2230 /*------------------------------------------------------------------*/
2231 /* cdbStructBlock - calls struct printing for a blcks */
2232 /*------------------------------------------------------------------*/
2234 cdbStructBlock (int block, FILE * of)
2237 bucket **table = StructTab;
2241 /* go thru the entire table */
2242 for (i = 0; i < 256; i++)
2244 for (chain = table[i]; chain; chain = chain->next)
2246 if (chain->block >= block)
2248 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2254 /*-----------------------------------------------------------------*/
2255 /* powof2 - returns power of two for the number if number is pow 2 */
2256 /*-----------------------------------------------------------------*/
2258 powof2 (unsigned long num)
2271 if (n1s > 1 || nshifts == 0)
2287 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2288 symbol *__muldiv[3][3][2];
2289 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2290 sym_link *__multypes[3][2];
2291 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2292 symbol *__conv[2][3][2];
2293 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2294 symbol *__rlrr[2][3][2];
2296 sym_link *floatType;
2299 _mangleFunctionName(char *in)
2301 if (port->getMangledFunctionName)
2303 return port->getMangledFunctionName(in);
2311 /*-----------------------------------------------------------------*/
2312 /* initCSupport - create functions for C support routines */
2313 /*-----------------------------------------------------------------*/
2317 const char *smuldivmod[] =
2321 const char *sbwd[] =
2323 "char", "int", "long"
2329 const char *srlrr[] =
2334 int bwd, su, muldivmod, tofrom, rlrr;
2336 if (getenv("SDCC_NO_C_SUPPORT")) {
2337 /* for debugging only */
2341 floatType = newFloatLink ();
2343 for (bwd = 0; bwd < 3; bwd++)
2360 __multypes[bwd][0] = l;
2361 __multypes[bwd][1] = copyLinkChain (l);
2362 SPEC_USIGN (__multypes[bwd][1]) = 1;
2365 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2366 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2367 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2368 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2369 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2370 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2371 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2372 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2373 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2374 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2376 for (tofrom = 0; tofrom < 2; tofrom++)
2378 for (bwd = 0; bwd < 3; bwd++)
2380 for (su = 0; su < 2; su++)
2384 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2385 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2389 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2390 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2396 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2398 for (bwd = 0; bwd < 3; bwd++)
2400 for (su = 0; su < 2; su++)
2402 sprintf (buffer, "_%s%s%s",
2403 smuldivmod[muldivmod],
2406 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2407 SPEC_NONBANKED (__muldiv[muldivmod][bwd][su]->etype) = 1;
2412 for (rlrr = 0; rlrr < 2; rlrr++)
2414 for (bwd = 0; bwd < 3; bwd++)
2416 for (su = 0; su < 2; su++)
2418 sprintf (buffer, "_%s%s%s",
2422 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2423 SPEC_NONBANKED (__rlrr[rlrr][bwd][su]->etype) = 1;