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);
613 FUNC_ISISR(dest) |= FUNC_ISISR(src);
614 FUNC_INTNO(dest) |= FUNC_INTNO(src);
615 FUNC_REGBANK(dest) |= FUNC_REGBANK(src);
620 /*------------------------------------------------------------------*/
621 /* cloneSpec - copies the entire spec and returns a new spec */
622 /*------------------------------------------------------------------*/
624 cloneSpec (sym_link * src)
628 /* go thru chain till we find the specifier */
629 while (src && src->class != SPECIFIER)
633 memcpy (spec, src, sizeof (sym_link));
637 /*------------------------------------------------------------------*/
638 /* genSymName - generates and returns a name used for anonymous vars */
639 /*------------------------------------------------------------------*/
641 genSymName (int level)
643 static int gCount = 0;
644 static char gname[SDCC_NAME_MAX + 1];
646 sprintf (gname, "__%04d%04d", level, gCount++);
650 /*------------------------------------------------------------------*/
651 /* getSpec - returns the specifier part from a declaration chain */
652 /*------------------------------------------------------------------*/
654 getSpec (sym_link * p)
659 while (p && !(IS_SPEC (p)))
665 /*------------------------------------------------------------------*/
666 /* newCharLink() - creates an char type */
667 /*------------------------------------------------------------------*/
674 p->class = SPECIFIER;
675 SPEC_NOUN (p) = V_CHAR;
680 /*------------------------------------------------------------------*/
681 /* newFloatLink - a new Float type */
682 /*------------------------------------------------------------------*/
689 p->class = SPECIFIER;
690 SPEC_NOUN (p) = V_FLOAT;
695 /*------------------------------------------------------------------*/
696 /* newLongLink() - new long type */
697 /*------------------------------------------------------------------*/
704 p->class = SPECIFIER;
705 SPEC_NOUN (p) = V_INT;
711 /*------------------------------------------------------------------*/
712 /* newIntLink() - creates an int type */
713 /*------------------------------------------------------------------*/
720 p->class = SPECIFIER;
721 SPEC_NOUN (p) = V_INT;
726 /*------------------------------------------------------------------*/
727 /* getSize - returns size of a type chain in bits */
728 /*------------------------------------------------------------------*/
730 getSize (sym_link * p)
732 /* if nothing return 0 */
736 { /* if this is the specifier then */
737 switch (SPEC_NOUN (p))
738 { /* depending on the specifier type */
740 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
748 return SPEC_STRUCT (p)->size;
754 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
760 /* this is a specifier */
761 switch (DCL_TYPE (p))
766 return DCL_ELEM (p) * getSize (p->next);
783 /*------------------------------------------------------------------*/
784 /* bitsForType - returns # of bits required to store this type */
785 /*------------------------------------------------------------------*/
787 bitsForType (sym_link * p)
789 /* if nothing return 0 */
794 { /* if this is the specifier then */
796 switch (SPEC_NOUN (p))
797 { /* depending on the specifier type */
799 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
801 return FLOATSIZE * 8;
807 return SPEC_STRUCT (p)->size * 8;
813 return SPEC_BLEN (p);
819 /* this is a specifier */
820 switch (DCL_TYPE (p))
825 return DCL_ELEM (p) * getSize (p->next) * 8;
829 return (PTRSIZE * 8);
833 return (FPTRSIZE * 8);
835 return (GPTRSIZE * 8);
842 /*------------------------------------------------------------------*/
843 /* copySymbolChain - copies a symbol chain */
844 /*------------------------------------------------------------------*/
846 copySymbolChain (symbol * src)
853 dest = copySymbol (src);
854 dest->next = copySymbolChain (src->next);
858 /*------------------------------------------------------------------*/
859 /* copySymbol - makes a copy of a symbol */
860 /*------------------------------------------------------------------*/
862 copySymbol (symbol * src)
869 dest = newSymbol (src->name, src->level);
870 memcpy (dest, src, sizeof (symbol));
871 dest->level = src->level;
872 dest->block = src->block;
873 dest->ival = copyIlist (src->ival);
874 dest->type = copyLinkChain (src->type);
875 dest->etype = getSpec (dest->type);
877 dest->key = src->key;
878 dest->allocreq = src->allocreq;
882 /*------------------------------------------------------------------*/
883 /* reverseSyms - reverses the links for a symbol chain */
884 /*------------------------------------------------------------------*/
886 reverseSyms (symbol * sym)
888 symbol *prev, *curr, *next;
903 sym->next = (void *) NULL;
907 /*------------------------------------------------------------------*/
908 /* reverseLink - reverses the links for a type chain */
909 /*------------------------------------------------------------------*/
911 reverseLink (sym_link * type)
913 sym_link *prev, *curr, *next;
928 type->next = (void *) NULL;
932 /*------------------------------------------------------------------*/
933 /* addSymChain - adds a symbol chain to the symboltable */
934 /*------------------------------------------------------------------*/
936 addSymChain (symbol * symHead)
938 symbol *sym = symHead;
941 for (; sym != NULL; sym = sym->next)
944 checkTypeSanity(sym->etype, sym->name);
946 /* if already exists in the symbol table then check if
947 one of them is an extern definition if yes then
948 then check if the type match, if the types match then
949 delete the current entry and add the new entry */
950 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
951 csym->level == sym->level) {
953 /* one definition extern ? */
954 if (IS_EXTERN (csym->etype) || IS_EXTERN (sym->etype)) {
955 /* do types match ? */
956 if (compareType (csym->type, sym->type) != 1) {
958 werror (E_EXTERN_MISMATCH, csym->name);
961 /* delete current entry */
962 deleteSym (SymbolTab, csym, csym->name);
965 werror (E_DUPLICATE, sym->name);
971 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
976 /*------------------------------------------------------------------*/
977 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
978 /*------------------------------------------------------------------*/
980 funcInChain (sym_link * lnk)
991 /*------------------------------------------------------------------*/
992 /* structElemType - returns the type info of a sturct member */
993 /*------------------------------------------------------------------*/
995 structElemType (sym_link * stype, value * id)
997 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
998 sym_link *type, *etype;
999 sym_link *petype = getSpec (stype);
1004 /* look for the id */
1007 if (strcmp (fields->rname, id->name) == 0)
1009 type = copyLinkChain (fields->type);
1010 etype = getSpec (type);
1011 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1012 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1015 fields = fields->next;
1017 werror (E_NOT_MEMBER, id->name);
1022 /*------------------------------------------------------------------*/
1023 /* getStructElement - returns element of a tructure definition */
1024 /*------------------------------------------------------------------*/
1026 getStructElement (structdef * sdef, symbol * sym)
1030 for (field = sdef->fields; field; field = field->next)
1031 if (strcmp (field->name, sym->name) == 0)
1034 werror (E_NOT_MEMBER, sym->name);
1036 return sdef->fields;
1039 /*------------------------------------------------------------------*/
1040 /* compStructSize - computes the size of a structure */
1041 /*------------------------------------------------------------------*/
1043 compStructSize (int su, structdef * sdef)
1045 int sum = 0, usum = 0;
1049 /* for the identifiers */
1050 loop = sdef->fields;
1053 /* create the internal name for this variable */
1054 sprintf (loop->rname, "_%s", loop->name);
1055 loop->offset = (su == UNION ? sum = 0 : sum);
1056 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1058 /* if this is a bit field */
1061 /* change it to a unsigned bit */
1062 SPEC_NOUN (loop->etype) = V_BIT;
1063 SPEC_USIGN (loop->etype) = 1;
1064 /* check if this fit into the remaining */
1065 /* bits of this byte else align it to the */
1066 /* next byte boundary */
1067 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1068 SPEC_BSTR (loop->etype) = bitOffset;
1069 if ((bitOffset += (loop->bitVar % 8)) == 8)
1072 else /* does not fit */ {
1074 SPEC_BSTR (loop->etype) = bitOffset;
1075 sum += (loop->bitVar / 8);
1076 bitOffset += (loop->bitVar % 8);
1078 /* if this is the last field then pad */
1079 if (!loop->next && bitOffset && bitOffset != 8) {
1085 checkDecl (loop, 1);
1086 sum += getSize (loop->type);
1089 /* if function then do the arguments for it */
1090 if (funcInChain (loop->type)) {
1091 processFuncArgs (loop, 1);
1096 /* if this is not a bitfield but the */
1097 /* previous one was and did not take */
1098 /* the whole byte then pad the rest */
1099 if ((loop && !loop->bitVar) && bitOffset) {
1104 /* if union then size = sizeof larget field */
1106 usum = max (usum, sum);
1110 return (su == UNION ? usum : sum);
1113 /*------------------------------------------------------------------*/
1114 /* checkSClass - check the storage class specification */
1115 /*------------------------------------------------------------------*/
1117 checkSClass (symbol * sym, int isProto)
1119 if (getenv("DEBUG_SANITY")) {
1120 fprintf (stderr, "checkSClass: %s \n", sym->name);
1122 if (strcmp(sym->name, "_testsGlobal")==0) {
1126 /* type is literal can happen foe enums change
1128 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1129 SPEC_SCLS (sym->etype) = S_AUTO;
1131 /* if sfr or sbit then must also be */
1132 /* volatile the initial value will be xlated */
1133 /* to an absolute address */
1134 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1135 SPEC_SCLS (sym->etype) == S_SFR)
1137 SPEC_VOLATILE (sym->etype) = 1;
1138 /* if initial value given */
1141 SPEC_ABSA (sym->etype) = 1;
1142 SPEC_ADDR (sym->etype) =
1143 (int) list2int (sym->ival);
1148 /* if absolute address given then it mark it as
1150 if (IS_ABSOLUTE (sym->etype))
1151 SPEC_VOLATILE (sym->etype) = 1;
1153 /* global variables declared const put into code */
1154 if (sym->level == 0 &&
1155 SPEC_CONST (sym->etype)) {
1156 SPEC_SCLS (sym->etype) = S_CODE;
1159 /* global variable in code space is a constant */
1160 if (sym->level == 0 &&
1161 SPEC_SCLS (sym->etype) == S_CODE &&
1163 SPEC_CONST (sym->etype) = 1;
1166 /* if bit variable then no storage class can be */
1167 /* specified since bit is already a storage */
1168 if (IS_BITVAR (sym->etype) &&
1169 (SPEC_SCLS (sym->etype) != S_FIXED &&
1170 SPEC_SCLS (sym->etype) != S_SBIT &&
1171 SPEC_SCLS (sym->etype) != S_BIT)
1174 werror (E_BITVAR_STORAGE, sym->name);
1175 SPEC_SCLS (sym->etype) = S_FIXED;
1178 /* extern variables cannot be initialized */
1179 if (IS_EXTERN (sym->etype) && sym->ival)
1181 werror (E_EXTERN_INIT, sym->name);
1185 /* if this is an atomatic symbol */
1186 if (sym->level && (options.stackAuto || reentrant)) {
1187 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1188 SPEC_SCLS (sym->etype) == S_FIXED ||
1189 SPEC_SCLS (sym->etype) == S_REGISTER ||
1190 SPEC_SCLS (sym->etype) == S_STACK ||
1191 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1192 SPEC_SCLS (sym->etype) = S_AUTO;
1194 /* storage class may only be specified for statics */
1195 if (!IS_STATIC(sym->etype)) {
1196 werror (E_AUTO_ASSUMED, sym->name);
1201 /* automatic symbols cannot be given */
1202 /* an absolute address ignore it */
1204 SPEC_ABSA (sym->etype) &&
1205 (options.stackAuto || reentrant))
1207 werror (E_AUTO_ABSA, sym->name);
1208 SPEC_ABSA (sym->etype) = 0;
1211 /* arrays & pointers cannot be defined for bits */
1212 /* SBITS or SFRs or BIT */
1213 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1214 (SPEC_NOUN (sym->etype) == V_BIT ||
1215 SPEC_NOUN (sym->etype) == V_SBIT ||
1216 SPEC_SCLS (sym->etype) == S_SFR))
1217 werror (E_BIT_ARRAY, sym->name);
1219 /* if this is a bit|sbit then set length & start */
1220 if (SPEC_NOUN (sym->etype) == V_BIT ||
1221 SPEC_NOUN (sym->etype) == V_SBIT)
1223 SPEC_BLEN (sym->etype) = 1;
1224 SPEC_BSTR (sym->etype) = 0;
1228 /* variables declared in CODE space must have */
1229 /* initializers if not an extern */
1230 if (SPEC_SCLS (sym->etype) == S_CODE &&
1231 sym->ival == NULL &&
1233 port->mem.code_ro &&
1234 !IS_EXTERN (sym->etype) &&
1235 !funcInChain (sym->type))
1236 werror (E_CODE_NO_INIT, sym->name);
1239 /* if parameter or local variable then change */
1240 /* the storage class to reflect where the var will go */
1241 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1242 !IS_STATIC(sym->etype))
1244 if (options.stackAuto || (currFunc && IFFUNC_ISREENT (currFunc->type)))
1246 SPEC_SCLS (sym->etype) = (options.useXstack ?
1247 S_XSTACK : S_STACK);
1251 /* hack-o-matic! I see no reason why the useXstack option should ever
1252 * control this allcoation, but the code was originally that way, and
1253 * changing it for non-390 ports breaks the compiler badly.
1255 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1256 SPEC_SCLS (sym->etype) = (useXdata ?
1262 /*------------------------------------------------------------------*/
1263 /* changePointer - change pointer to functions */
1264 /*------------------------------------------------------------------*/
1266 changePointer (symbol * sym)
1270 /* go thru the chain of declarations */
1271 /* if we find a pointer to a function */
1272 /* unconditionally change it to a ptr */
1274 for (p = sym->type; p; p = p->next)
1276 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1277 DCL_TYPE (p) = GPOINTER;
1278 if (IS_PTR (p) && IS_FUNC (p->next))
1279 DCL_TYPE (p) = CPOINTER;
1283 /*------------------------------------------------------------------*/
1284 /* checkDecl - does semantic validation of a declaration */
1285 /*------------------------------------------------------------------*/
1287 checkDecl (symbol * sym, int isProto)
1290 checkSClass (sym, isProto); /* check the storage class */
1291 changePointer (sym); /* change pointers if required */
1293 /* if this is an array without any dimension
1294 then update the dimension from the initial value */
1295 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1296 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1301 /*------------------------------------------------------------------*/
1302 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1303 /*------------------------------------------------------------------*/
1305 copyLinkChain (sym_link * p)
1307 sym_link *head, *curr, *loop;
1310 head = loop = (curr ? newLink () : (void *) NULL);
1313 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1314 loop->next = (curr->next ? newLink () : (void *) NULL);
1323 /*------------------------------------------------------------------*/
1324 /* cleanUpBlock - cleansup the symbol table specified for all the */
1325 /* symbols in the given block */
1326 /*------------------------------------------------------------------*/
1328 cleanUpBlock (bucket ** table, int block)
1333 /* go thru the entire table */
1334 for (i = 0; i < 256; i++)
1336 for (chain = table[i]; chain; chain = chain->next)
1338 if (chain->block >= block)
1340 deleteSym (table, chain->sym, chain->name);
1346 /*------------------------------------------------------------------*/
1347 /* cleanUpLevel - cleansup the symbol table specified for all the */
1348 /* symbols in the given level */
1349 /*------------------------------------------------------------------*/
1351 cleanUpLevel (bucket ** table, int level)
1356 /* go thru the entire table */
1357 for (i = 0; i < 256; i++)
1359 for (chain = table[i]; chain; chain = chain->next)
1361 if (chain->level >= level)
1363 deleteSym (table, chain->sym, chain->name);
1369 /*------------------------------------------------------------------*/
1370 /* computeType - computes the resultant type from two types */
1371 /*------------------------------------------------------------------*/
1373 computeType (sym_link * type1, sym_link * type2)
1377 sym_link *etype1 = getSpec (type1);
1378 sym_link *etype2 = getSpec (type2);
1380 /* if one of them is a float then result is a float */
1381 /* here we assume that the types passed are okay */
1382 /* and can be cast to one another */
1383 /* which ever is greater in size */
1384 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1385 rType = newFloatLink ();
1387 /* if only one of them is a bit variable
1388 then the other one prevails */
1389 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1390 rType = copyLinkChain (type2);
1391 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1392 rType = copyLinkChain (type1);
1394 /* if one of them is a pointer then that
1397 rType = copyLinkChain (type1);
1398 else if (IS_PTR (type2))
1399 rType = copyLinkChain (type2);
1400 else if (getSize (type1) > getSize (type2))
1401 rType = copyLinkChain (type1);
1403 rType = copyLinkChain (type2);
1405 reType = getSpec (rType);
1407 /* if either of them unsigned but not val then make this unsigned */
1408 if (((!IS_LITERAL(type1) && SPEC_USIGN (etype1)) ||
1409 (!IS_LITERAL(type2) && SPEC_USIGN (etype2))) &&
1411 SPEC_USIGN (reType) = 1;
1413 SPEC_USIGN (reType) = 0;
1415 /* if result is a literal then make not so */
1416 if (IS_LITERAL (reType))
1417 SPEC_SCLS (reType) = S_REGISTER;
1422 /*--------------------------------------------------------------------*/
1423 /* compareType - will do type check return 1 if match, -1 if castable */
1424 /*--------------------------------------------------------------------*/
1426 compareType (sym_link * dest, sym_link * src)
1437 /* if dest is a declarator then */
1442 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1444 //checkFunction(src,dest);
1446 return compareType (dest->next, src->next);
1448 if (IS_PTR (src) && IS_GENPTR (dest))
1450 if (IS_PTR (dest) && IS_ARRAY (src)) {
1451 value *val=aggregateToPointer (valFromType(src));
1452 int res=compareType (dest, val->type);
1453 Safe_free(val->type);
1457 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1458 return compareType (dest->next, src);
1461 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1467 /* if one is a specifier and the other is not */
1468 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1469 (IS_SPEC (dest) && !IS_SPEC (src)))
1472 /* if one of them is a void then ok */
1473 if (SPEC_NOUN (dest) == V_VOID &&
1474 SPEC_NOUN (src) != V_VOID)
1477 if (SPEC_NOUN (dest) != V_VOID &&
1478 SPEC_NOUN (src) == V_VOID)
1481 /* if they are both bitfields then if the lengths
1482 and starts don't match */
1483 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1484 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1485 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1488 /* it is a specifier */
1489 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1491 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1492 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1493 getSize (dest) == getSize (src))
1495 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1500 else if (IS_STRUCT (dest))
1502 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1507 if (SPEC_LONG (dest) != SPEC_LONG (src))
1510 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1516 /*------------------------------------------------------------------*/
1517 /* inCalleeSaveList - return 1 if found in callee save list */
1518 /*------------------------------------------------------------------*/
1520 inCalleeSaveList (char *s)
1524 for (i = 0; options.calleeSaves[i]; i++)
1525 if (strcmp (options.calleeSaves[i], s) == 0)
1531 /*-----------------------------------------------------------------*/
1532 /* aggregateToPointer: change an agggregate type function */
1533 /* argument to a pointer to that type. */
1534 /*-----------------------------------------------------------------*/
1536 aggregateToPointer (value * val)
1538 if (IS_AGGREGATE (val->type))
1540 /* if this is a structure */
1541 /* then we need to add a new link */
1542 if (IS_STRUCT (val->type))
1544 /* first lets add DECLARATOR type */
1545 sym_link *p = val->type;
1547 werror (W_STRUCT_AS_ARG, val->name);
1548 val->type = newLink ();
1549 val->type->next = p;
1552 /* change to a pointer depending on the */
1553 /* storage class specified */
1554 switch (SPEC_SCLS (val->etype))
1557 DCL_TYPE (val->type) = IPOINTER;
1560 DCL_TYPE (val->type) = PPOINTER;
1563 if (TARGET_IS_DS390)
1565 /* The AUTO and REGISTER classes should probably
1566 * also become generic pointers, but I haven't yet
1567 * devised a test case for that.
1569 DCL_TYPE (val->type) = GPOINTER;
1572 if (options.model==MODEL_LARGE) {
1573 DCL_TYPE (val->type) = FPOINTER;
1580 DCL_TYPE (val->type) = POINTER;
1583 DCL_TYPE (val->type) = CPOINTER;
1586 DCL_TYPE (val->type) = FPOINTER;
1589 DCL_TYPE (val->type) = EEPPOINTER;
1592 DCL_TYPE (val->type) = GPOINTER;
1595 /* is there is a symbol associated then */
1596 /* change the type of the symbol as well */
1599 val->sym->type = copyLinkChain (val->type);
1600 val->sym->etype = getSpec (val->sym->type);
1605 /*------------------------------------------------------------------*/
1606 /* checkFunction - does all kinds of check on a function */
1607 /*------------------------------------------------------------------*/
1609 checkFunction (symbol * sym, symbol *csym)
1611 value *exargs, *acargs;
1615 if (getenv("DEBUG_SANITY")) {
1616 fprintf (stderr, "checkFunction: %s ", sym->name);
1619 /* make sure the type is complete and sane */
1620 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1622 /* if not type then some kind of error */
1626 /* if the function has no type then make it return int */
1627 if (!sym->type->next)
1628 sym->type->next = sym->etype = newIntLink ();
1630 /* function cannot return aggregate */
1631 if (IS_AGGREGATE (sym->type->next))
1633 werror (E_FUNC_AGGR, sym->name);
1637 /* function cannot return bit */
1638 if (IS_BITVAR (sym->type->next))
1640 werror (E_FUNC_BIT, sym->name);
1644 /* check if this function is defined as calleeSaves
1645 then mark it as such */
1646 FUNC_CALLEESAVES(sym->type) = inCalleeSaveList (sym->name);
1648 /* if interrupt service routine */
1649 /* then it cannot have arguments */
1650 if (IFFUNC_ARGS(sym->type) && FUNC_ISISR (sym->type))
1652 if (!IS_VOID(FUNC_ARGS(sym->type)->type)) {
1653 werror (E_INT_ARGS, sym->name);
1654 FUNC_ARGS(sym->type)=NULL;
1658 if (!csym && !(csym = findSym (SymbolTab, sym, sym->name)))
1659 return 1; /* not defined nothing more to check */
1661 /* check if body already present */
1662 if (csym && IFFUNC_HASBODY(csym->type))
1664 werror (E_FUNC_BODY, sym->name);
1668 /* check the return value type */
1669 if (compareType (csym->type, sym->type) <= 0)
1671 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1672 werror (W_CONTINUE, "previous definition type ");
1673 printTypeChain (csym->type, stderr);
1674 fprintf (stderr, "\n");
1675 werror (W_CONTINUE, "current definition type ");
1676 printTypeChain (sym->type, stderr);
1677 fprintf (stderr, "\n");
1681 if (FUNC_ISISR (csym->type) != FUNC_ISISR (sym->type))
1683 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1686 if (FUNC_REGBANK (csym->type) != FUNC_REGBANK (sym->type))
1688 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1691 if (IFFUNC_ISNAKED (csym->type) != IFFUNC_ISNAKED (sym->type))
1693 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1696 /* compare expected args with actual args */
1697 exargs = FUNC_ARGS(csym->type);
1698 acargs = FUNC_ARGS(sym->type);
1700 /* for all the expected args do */
1703 exargs = exargs->next, acargs = acargs->next, argCnt++)
1705 if (getenv("DEBUG_SANITY")) {
1706 fprintf (stderr, "checkFunction: %s ", exargs->name);
1708 /* make sure the type is complete and sane */
1709 checkTypeSanity(exargs->etype, exargs->name);
1711 /* If the actual argument is an array, any prototype
1712 * will have modified it to a pointer. Duplicate that
1715 if (IS_AGGREGATE (acargs->type))
1717 checkValue = copyValue (acargs);
1718 aggregateToPointer (checkValue);
1722 checkValue = acargs;
1725 if (compareType (exargs->type, checkValue->type) <= 0)
1727 werror (E_ARG_TYPE, argCnt);
1732 /* if one them ended we have a problem */
1733 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1734 (!exargs && acargs && !IS_VOID (acargs->type)))
1735 werror (E_ARG_COUNT);
1737 /* replace with this defition */
1738 sym->cdef = csym->cdef;
1739 deleteSym (SymbolTab, csym, csym->name);
1740 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1741 if (IS_EXTERN (csym->etype) && !
1742 IS_EXTERN (sym->etype))
1744 addSet (&publics, sym);
1749 /*-----------------------------------------------------------------*/
1750 /* processFuncArgs - does some processing with function args */
1751 /*-----------------------------------------------------------------*/
1753 processFuncArgs (symbol * func, int ignoreName)
1758 /* if this function has variable argument list */
1759 /* then make the function a reentrant one */
1760 if (IFFUNC_HASVARARGS(func->type))
1761 FUNC_ISREENT(func->type)=1;
1763 /* check if this function is defined as calleeSaves
1764 then mark it as such */
1765 FUNC_CALLEESAVES(func->type) = inCalleeSaveList (func->name);
1767 /* loop thru all the arguments */
1768 val = FUNC_ARGS(func->type);
1770 /* if it is void then remove parameters */
1771 if (val && IS_VOID (val->type))
1773 FUNC_ARGS(func->type) = NULL;
1777 /* reset regparm for the port */
1778 (*port->reset_regparms) ();
1779 /* if any of the arguments is an aggregate */
1780 /* change it to pointer to the same type */
1783 /* mark it as a register parameter if
1784 the function does not have VA_ARG
1785 and as port dictates */
1786 if (!IFFUNC_HASVARARGS(func->type) &&
1787 (*port->reg_parm) (val->type))
1789 SPEC_REGPARM (val->etype) = 1;
1792 if (IS_AGGREGATE (val->type))
1794 aggregateToPointer (val);
1800 /* if this is an internal generated function call */
1802 /* ignore --stack-auto for this one, we don't know how it is compiled */
1803 /* simply trust on --int-long-reent or --float-reent */
1804 if (IFFUNC_ISREENT(func->type)) {
1808 /* if this function is reentrant or */
1809 /* automatics r 2b stacked then nothing */
1810 if (IFFUNC_ISREENT (func->type) || options.stackAuto)
1814 val = FUNC_ARGS(func->type);
1819 /* if a symbolname is not given */
1820 /* synthesize a variable name */
1824 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1825 val->sym = newSymbol (val->name, 1);
1826 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1827 val->sym->type = copyLinkChain (val->type);
1828 val->sym->etype = getSpec (val->sym->type);
1829 val->sym->_isparm = 1;
1830 strcpy (val->sym->rname, val->name);
1831 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1832 SPEC_STAT (func->etype);
1833 addSymChain (val->sym);
1836 else /* symbol name given create synth name */
1839 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1840 strcpy (val->sym->rname, val->name);
1841 val->sym->_isparm = 1;
1842 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1843 (options.model != MODEL_SMALL ? xdata : data);
1844 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1845 SPEC_STAT (func->etype);
1851 /*-----------------------------------------------------------------*/
1852 /* isSymbolEqual - compares two symbols return 1 if they match */
1853 /*-----------------------------------------------------------------*/
1855 isSymbolEqual (symbol * dest, symbol * src)
1857 /* if pointers match then equal */
1861 /* if one of them is null then don't match */
1865 /* if both of them have rname match on rname */
1866 if (dest->rname[0] && src->rname[0])
1867 return (!strcmp (dest->rname, src->rname));
1869 /* otherwise match on name */
1870 return (!strcmp (dest->name, src->name));
1873 void PT(sym_link *type)
1875 printTypeChain(type,0);
1877 /*-----------------------------------------------------------------*/
1878 /* printTypeChain - prints the type chain in human readable form */
1879 /*-----------------------------------------------------------------*/
1881 printTypeChain (sym_link * start, FILE * of)
1884 sym_link * type, * search;
1893 fprintf (of, "**err**");
1897 /* print the chain as it is written in the source: */
1898 /* start with the last entry */
1899 for (type = start; type && type->next; type = type->next)
1905 if (DCL_PTR_VOLATILE (type)) {
1906 fprintf (of, "volatile ");
1908 switch (DCL_TYPE (type))
1911 fprintf (of, "function ");
1914 if (DCL_PTR_CONST (type))
1915 fprintf (of, "const ");
1916 fprintf (of, "* generic ");
1919 if (DCL_PTR_CONST (type))
1920 fprintf (of, "const ");
1921 fprintf (of, "* code ");
1924 if (DCL_PTR_CONST (type))
1925 fprintf (of, "const ");
1926 fprintf (of, "* xdata ");
1929 if (DCL_PTR_CONST (type))
1930 fprintf (of, "const ");
1931 fprintf (of, "* eeprom ");
1935 if (DCL_PTR_CONST (type))
1936 fprintf (of, "const ");
1937 fprintf (of, "* near ");
1940 if (DCL_PTR_CONST (type))
1941 fprintf (of, "const ");
1942 fprintf (of, "* idata ");
1945 if (DCL_PTR_CONST (type))
1946 fprintf (of, "const ");
1947 fprintf (of, "* pdata ");
1950 if (DCL_PTR_CONST (type))
1951 fprintf (of, "const ");
1952 fprintf (of, "* unkown ");
1955 fprintf (of, "[] ");
1961 switch (SPEC_SCLS(type))
1963 case S_DATA: fprintf (of, "data "); break;
1964 case S_XDATA: fprintf (of, "xdata "); break;
1965 case S_SFR: fprintf (of, "sfr "); break;
1966 case S_SBIT: fprintf (of, "sbit "); break;
1967 case S_CODE: fprintf (of, "code "); break;
1968 case S_IDATA: fprintf (of, "idata "); break;
1969 case S_PDATA: fprintf (of, "pdata "); break;
1970 case S_LITERAL: fprintf (of, "literal "); break;
1971 case S_STACK: fprintf (of, "stack "); break;
1972 case S_XSTACK: fprintf (of, "xstack "); break;
1973 case S_BIT: fprintf (of, "bit "); break;
1974 case S_EEPROM: fprintf (of, "eeprom "); break;
1978 if (SPEC_VOLATILE (type))
1979 fprintf (of, "volatile ");
1980 if (SPEC_USIGN (type))
1981 fprintf (of, "unsigned ");
1982 if (SPEC_CONST (type))
1983 fprintf (of, "const ");
1985 switch (SPEC_NOUN (type))
1989 fprintf (of, "long ");
1990 fprintf (of, "int");
1994 fprintf (of, "char");
1998 fprintf (of, "void");
2002 fprintf (of, "float");
2006 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2010 fprintf (of, "sbit");
2014 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2018 fprintf (of, "double");
2022 fprintf (of, "unknown type");
2026 /* search entry in list before "type" */
2027 for (search = start; search && search->next != type;)
2028 search = search->next;
2037 /*-----------------------------------------------------------------*/
2038 /* cdbTypeInfo - print the type information for debugger */
2039 /*-----------------------------------------------------------------*/
2041 cdbTypeInfo (sym_link * type, FILE * of)
2043 fprintf (of, "{%d}", getSize (type));
2048 switch (DCL_TYPE (type))
2051 fprintf (of, "DF,");
2054 fprintf (of, "DG,");
2057 fprintf (of, "DC,");
2060 fprintf (of, "DX,");
2063 fprintf (of, "DD,");
2066 fprintf (of, "DI,");
2069 fprintf (of, "DP,");
2072 fprintf (of, "DA,");
2075 fprintf (of, "DA%d,", DCL_ELEM (type));
2083 switch (SPEC_NOUN (type))
2105 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2113 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2120 if (SPEC_USIGN (type))
2128 /*-----------------------------------------------------------------*/
2129 /* cdbSymbol - prints a symbol & its type information for debugger */
2130 /*-----------------------------------------------------------------*/
2132 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2144 fprintf (of, "S:"); /* symbol record */
2145 /* if this is not a structure symbol then
2146 we need to figure out the scope information */
2152 if (IS_STATIC (sym->etype))
2153 fprintf (of, "F%s$", moduleName); /* scope is file */
2155 fprintf (of, "G$"); /* scope is global */
2158 /* symbol is local */
2159 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2162 fprintf (of, "S$"); /* scope is structure */
2164 /* print the name, & mangled name */
2165 fprintf (of, "%s$%d$%d(", sym->name,
2166 sym->level, sym->block);
2168 cdbTypeInfo (sym->type, of);
2171 /* print the address space */
2172 map = SPEC_OCLS (sym->etype);
2173 fprintf (of, "%c,%d,%d",
2174 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2176 /* if assigned to registers then output register names */
2177 /* if this is a function then print
2178 if is it an interrupt routine & interrupt number
2179 and the register bank it is using */
2181 fprintf (of, ",%d,%d,%d", FUNC_ISISR (sym->type),
2182 FUNC_INTNO (sym->type), FUNC_REGBANK (sym->type));
2183 /* alternate location to find this symbol @ : eg registers
2190 /*-----------------------------------------------------------------*/
2191 /* cdbStruct - print a structure for debugger */
2192 /*-----------------------------------------------------------------*/
2194 cdbStruct (structdef * sdef, int block, FILE * of,
2195 int inStruct, char *tag)
2200 /* if block # then must have function scope */
2201 fprintf (of, "F%s$", moduleName);
2202 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2203 for (sym = sdef->fields; sym; sym = sym->next)
2205 fprintf (of, "({%d}", sym->offset);
2206 cdbSymbol (sym, of, TRUE, FALSE);
2214 /*------------------------------------------------------------------*/
2215 /* cdbStructBlock - calls struct printing for a blcks */
2216 /*------------------------------------------------------------------*/
2218 cdbStructBlock (int block, FILE * of)
2221 bucket **table = StructTab;
2225 /* go thru the entire table */
2226 for (i = 0; i < 256; i++)
2228 for (chain = table[i]; chain; chain = chain->next)
2230 if (chain->block >= block)
2232 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2238 /*-----------------------------------------------------------------*/
2239 /* powof2 - returns power of two for the number if number is pow 2 */
2240 /*-----------------------------------------------------------------*/
2242 powof2 (unsigned long num)
2255 if (n1s > 1 || nshifts == 0)
2271 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2272 symbol *__muldiv[3][3][2];
2273 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2274 sym_link *__multypes[3][2];
2275 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2276 symbol *__conv[2][3][2];
2277 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2278 symbol *__rlrr[2][3][2];
2280 sym_link *floatType;
2283 _mangleFunctionName(char *in)
2285 if (port->getMangledFunctionName)
2287 return port->getMangledFunctionName(in);
2295 /*-----------------------------------------------------------------*/
2296 /* initCSupport - create functions for C support routines */
2297 /*-----------------------------------------------------------------*/
2301 const char *smuldivmod[] =
2305 const char *sbwd[] =
2307 "char", "int", "long"
2313 const char *srlrr[] =
2318 int bwd, su, muldivmod, tofrom, rlrr;
2320 if (getenv("SDCC_NO_C_SUPPORT")) {
2321 /* for debugging only */
2325 floatType = newFloatLink ();
2327 for (bwd = 0; bwd < 3; bwd++)
2344 __multypes[bwd][0] = l;
2345 __multypes[bwd][1] = copyLinkChain (l);
2346 SPEC_USIGN (__multypes[bwd][1]) = 1;
2349 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2350 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2351 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2352 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2353 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2354 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2355 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2356 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2357 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2358 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2360 for (tofrom = 0; tofrom < 2; tofrom++)
2362 for (bwd = 0; bwd < 3; bwd++)
2364 for (su = 0; su < 2; su++)
2368 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2369 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2373 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2374 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2380 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2382 for (bwd = 0; bwd < 3; bwd++)
2384 for (su = 0; su < 2; su++)
2386 sprintf (buffer, "_%s%s%s",
2387 smuldivmod[muldivmod],
2390 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2391 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2396 for (rlrr = 0; rlrr < 2; rlrr++)
2398 for (bwd = 0; bwd < 3; bwd++)
2400 for (su = 0; su < 2; su++)
2402 sprintf (buffer, "_%s%s%s",
2406 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2407 FUNC_NONBANKED (__rlrr[rlrr][bwd][su]->type) = 1;