1 /*-------------------------------------------------------------------------
2 SDCCsymt.c - Code file for Symbols table related structures and MACRO's.
3 Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU General Public License as published by the
7 Free Software Foundation; either version 2, or (at your option) any
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 In other words, you are welcome to use, share and improve this program.
20 You are forbidden to forbid anyone else to use, share and improve
21 what you give them. Help stamp out software-hoarding!
22 -------------------------------------------------------------------------*/
27 value *aggregateToPointer (value *val);
29 void printFromToType(sym_link *from, sym_link *to) {
30 fprintf (stderr, "from type '");
31 printTypeChain (from, stderr);
32 fprintf (stderr, "'\nto type '");
33 printTypeChain (to, stderr);
34 fprintf (stderr, "'\n");
38 char *nounName(sym_link *sl) {
39 switch (SPEC_NOUN(sl))
42 if (SPEC_LONG(sl)) return "long";
43 if (sl->select.s._short) return "short";
46 case V_FLOAT: return "float";
47 case V_CHAR: return "char";
48 case V_VOID: return "void";
49 case V_STRUCT: return "struct";
50 case V_LABEL: return "label";
51 case V_BIT: return "bit";
52 case V_SBIT: return "sbit";
53 case V_DOUBLE: return "double";
58 bucket *SymbolTab[256]; /* the symbol table */
59 bucket *StructTab[256]; /* the structure table */
60 bucket *TypedefTab[256]; /* the typedef table */
61 bucket *LabelTab[256]; /* the Label table */
62 bucket *enumTab[256]; /* enumerated table */
64 /*------------------------------------------------------------------*/
65 /* initSymt () - initialises symbol table related stuff */
66 /*------------------------------------------------------------------*/
72 for (i = 0; i < 256; i++)
73 SymbolTab[i] = StructTab[i] = (void *) NULL;
77 /*-----------------------------------------------------------------*/
78 /* newBucket - allocates & returns a new bucket */
79 /*-----------------------------------------------------------------*/
85 bp = Safe_alloc ( sizeof (bucket));
90 /*-----------------------------------------------------------------*/
91 /* hashKey - computes the hashkey given a symbol name */
92 /*-----------------------------------------------------------------*/
94 hashKey (const char *s)
96 unsigned long key = 0;
103 /*-----------------------------------------------------------------*/
104 /* addSym - adds a symbol to the hash Table */
105 /*-----------------------------------------------------------------*/
107 addSym (bucket ** stab,
114 int i; /* index into the hash Table */
115 bucket *bp; /* temp bucket * */
118 if (getenv("DEBUG_SANITY")) {
119 fprintf (stderr, "addSym: %s ", sname);
121 /* make sure the type is complete and sane */
122 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
125 /* prevent overflow of the (r)name buffers */
126 if (strlen(sname)>SDCC_SYMNAME_MAX) {
127 werror (W_SYMBOL_NAME_TOO_LONG, SDCC_SYMNAME_MAX);
128 sname[SDCC_SYMNAME_MAX]='\0';
131 /* the symbols are always added at the head of the list */
133 /* get a free entry */
134 bp = Safe_alloc ( sizeof (bucket));
136 bp->sym = sym; /* update the symbol pointer */
137 bp->level = level; /* update the nest level */
139 strcpy (bp->name, sname); /* copy the name into place */
141 /* if this is the first entry */
144 bp->prev = bp->next = (void *) NULL; /* point to nothing */
147 /* not first entry then add @ head of list */
157 /*-----------------------------------------------------------------*/
158 /* deleteSym - deletes a symbol from the hash Table entry */
159 /*-----------------------------------------------------------------*/
161 deleteSym (bucket ** stab, void *sym, char *sname)
169 /* find the symbol */
172 if (bp->sym == sym) /* found it then break out */
173 break; /* of the loop */
177 if (!bp) /* did not find it */
179 /* if this is the first one in the chain */
183 if (stab[i]) /* if chain ! empty */
184 stab[i]->prev = (void *) NULL;
186 /* middle || end of chain */
189 if (bp->next) /* if not end of chain */
190 bp->next->prev = bp->prev;
192 bp->prev->next = bp->next;
197 /*-----------------------------------------------------------------*/
198 /* findSym - finds a symbol in a table */
199 /*-----------------------------------------------------------------*/
201 findSym (bucket ** stab, void *sym, const char *sname)
205 bp = stab[hashKey (sname)];
208 if (bp->sym == sym || strcmp (bp->name, sname) == 0)
213 return (bp ? bp->sym : (void *) NULL);
216 /*-----------------------------------------------------------------*/
217 /* findSymWithLevel - finds a symbol with a name & level */
218 /*-----------------------------------------------------------------*/
220 findSymWithLevel (bucket ** stab, symbol * sym)
224 bp = stab[hashKey (sym->name)];
227 ** do the search from the head of the list since the
228 ** elements are added at the head it is ensured that
229 ** we will find the deeper definitions before we find
230 ** the global ones. we need to check for symbols with
231 ** level <= to the level given, if levels match then block
232 ** numbers need to match as well
236 if (strcmp (bp->name, sym->name) == 0 && bp->level <= sym->level)
238 /* if this is parameter then nothing else need to be checked */
239 if (((symbol *) (bp->sym))->_isparm)
241 /* if levels match then block numbers should also match */
242 if (bp->level && bp->level == sym->level && bp->block == sym->block)
244 /* if levels don't match then we are okay */
245 if (bp->level && bp->level != sym->level && bp->block <= sym->block)
247 /* if this is a global variable then we are ok too */
255 return (void *) NULL;
258 /*-----------------------------------------------------------------*/
259 /* findSymWithBlock - finds a symbol with name in with a block */
260 /*-----------------------------------------------------------------*/
262 findSymWithBlock (bucket ** stab, symbol * sym, int block)
266 bp = stab[hashKey (sym->name)];
269 if (strcmp (bp->name, sym->name) == 0 &&
275 return (bp ? bp->sym : (void *) NULL);
278 /*------------------------------------------------------------------*/
279 /* newSymbol () - returns a new pointer to a symbol */
280 /*------------------------------------------------------------------*/
282 newSymbol (char *name, int scope)
286 sym = Safe_alloc ( sizeof (symbol));
288 strcpy (sym->name, name); /* copy the name */
289 sym->level = scope; /* set the level */
290 sym->block = currBlockno;
291 sym->lineDef = yylineno; /* set the line number */
295 /*------------------------------------------------------------------*/
296 /* newLink - creates a new link (declarator,specifier) */
297 /*------------------------------------------------------------------*/
303 p = Safe_alloc ( sizeof (sym_link));
308 /*------------------------------------------------------------------*/
309 /* newStruct - creats a new structdef from the free list */
310 /*------------------------------------------------------------------*/
312 newStruct (char *tag)
316 s = Safe_alloc ( sizeof (structdef));
318 strcpy (s->tag, tag); /* copy the tag */
322 /*------------------------------------------------------------------*/
323 /* pointerTypes - do the computation for the pointer types */
324 /*------------------------------------------------------------------*/
326 pointerTypes (sym_link * ptr, sym_link * type)
331 /* find the first pointer type */
332 while (ptr && !IS_PTR (ptr))
335 /* could not find it */
336 if (!ptr || IS_SPEC (ptr))
339 if (IS_PTR(ptr) && DCL_TYPE(ptr)!=UPOINTER) {
340 pointerTypes (ptr->next, type);
344 /* change the pointer type depending on the
345 storage class of the type */
348 DCL_PTR_CONST (ptr) = SPEC_CONST (type);
349 DCL_PTR_VOLATILE (ptr) = SPEC_VOLATILE (type);
350 switch (SPEC_SCLS (type))
353 DCL_TYPE (ptr) = FPOINTER;
356 DCL_TYPE (ptr) = IPOINTER;
359 DCL_TYPE (ptr) = PPOINTER;
362 DCL_TYPE (ptr) = POINTER;
365 DCL_PTR_CONST (ptr) = port->mem.code_ro;
366 DCL_TYPE (ptr) = CPOINTER;
369 DCL_TYPE (ptr) = EEPPOINTER;
372 DCL_TYPE (ptr) = GPOINTER;
375 /* the storage class of type ends here */
378 SPEC_VOLATILE (type) = 0;
381 /* now change all the remaining unknown pointers
382 to generic pointers */
385 if (!IS_SPEC (ptr) && DCL_TYPE (ptr) == UPOINTER)
386 DCL_TYPE (ptr) = GPOINTER;
390 /* same for the type although it is highly unlikely that
391 type will have a pointer */
394 if (!IS_SPEC (type) && DCL_TYPE (type) == UPOINTER)
395 DCL_TYPE (type) = GPOINTER;
401 /*------------------------------------------------------------------*/
402 /* addDecl - adds a declarator @ the end of a chain */
403 /*------------------------------------------------------------------*/
405 addDecl (symbol * sym, int type, sym_link * p)
411 /* if we are passed a link then set head & tail */
420 head = tail = newLink ();
421 DCL_TYPE (head) = type;
424 /* if this is the first entry */
432 if (IS_SPEC (sym->etype) && IS_SPEC (head) && head == tail)
434 sym->etype = mergeSpec (sym->etype, head, sym->name);
438 if (IS_SPEC (sym->etype) && !IS_SPEC (head) && head == tail)
441 while (t->next != sym->etype)
444 tail->next = sym->etype;
448 sym->etype->next = head;
454 /* if the type is an unknown pointer and has
455 a tspec then take the storage class const & volatile
456 attribute from the tspec & make it those of this
460 //DCL_TYPE (p) == UPOINTER &&
463 if (!IS_SPEC (sym->etype))
465 sym->etype = sym->etype->next = newLink ();
466 sym->etype->class = SPECIFIER;
468 SPEC_SCLS (sym->etype) = SPEC_SCLS (DCL_TSPEC (p));
469 SPEC_CONST (sym->etype) = SPEC_CONST (DCL_TSPEC (p));
470 SPEC_VOLATILE (sym->etype) = SPEC_VOLATILE (DCL_TSPEC (p));
471 DCL_TSPEC (p) = NULL;
476 /*------------------------------------------------------------------
477 checkTypeSanity: prevent the user from doing e.g.:
479 ------------------------------------------------------------------*/
480 void checkTypeSanity(sym_link *etype, char *name) {
484 if (getenv("DEBUG_SANITY")) {
485 fprintf (stderr, "sanity check skipped for %s (etype==0)\n", name);
490 if (!IS_SPEC(etype)) {
491 if (getenv("DEBUG_SANITY")) {
492 fprintf (stderr, "sanity check skipped for %s (!IS_SPEC)\n", name);
497 noun=nounName(etype);
499 if (getenv("DEBUG_SANITY")) {
500 fprintf (stderr, "checking sanity for %s %x\n", name, (int)etype);
503 if ((SPEC_NOUN(etype)==V_CHAR ||
504 SPEC_NOUN(etype)==V_FLOAT ||
505 SPEC_NOUN(etype)==V_DOUBLE ||
506 SPEC_NOUN(etype)==V_VOID) &&
507 (etype->select.s._short || SPEC_LONG(etype))) {
508 // long or short for char float double or void
509 werror (E_LONG_OR_SHORT_INVALID, noun, name);
511 if ((SPEC_NOUN(etype)==V_FLOAT ||
512 SPEC_NOUN(etype)==V_DOUBLE ||
513 SPEC_NOUN(etype)==V_VOID) &&
514 (etype->select.s._signed || SPEC_USIGN(etype))) {
515 // signed or unsigned for float double or void
516 werror (E_SIGNED_OR_UNSIGNED_INVALID, noun, name);
519 // special case for "short"
520 if (etype->select.s._short) {
521 SPEC_NOUN(etype) = options.shortis8bits ? V_CHAR : V_INT;
522 etype->select.s._short = 0;
526 "const a;" or "data b;" or "signed s" or "long l"
528 if (!SPEC_NOUN(etype)) {
529 SPEC_NOUN(etype)=V_INT;
532 if (etype->select.s._signed && SPEC_USIGN(etype)) {
533 // signed AND unsigned
534 werror (E_SIGNED_AND_UNSIGNED_INVALID, noun, name);
536 if (etype->select.s._short && SPEC_LONG(etype)) {
538 werror (E_LONG_AND_SHORT_INVALID, noun, name);
543 /*------------------------------------------------------------------*/
544 /* mergeSpec - merges two specifiers and returns the new one */
545 /*------------------------------------------------------------------*/
547 mergeSpec (sym_link * dest, sym_link * src, char *name)
549 sym_link *symlink=dest;
551 if (!IS_SPEC(dest) || !IS_SPEC(src)) {
553 werror (E_INTERNAL_ERROR, __FILE__, __LINE__, "cannot merge declarator");
556 werror (E_SYNTAX_ERROR, yytext);
557 // the show must go on
562 if (SPEC_NOUN(src)) {
563 if (!SPEC_NOUN(dest)) {
564 SPEC_NOUN(dest)=SPEC_NOUN(src);
566 /* we shouldn't redeclare the type */
567 if (getenv("DEBUG_SANITY")) {
568 fprintf (stderr, "mergeSpec: ");
570 werror(E_TWO_OR_MORE_DATA_TYPES, name);
574 if (SPEC_SCLS(src)) {
575 /* if destination has no storage class */
576 if (!SPEC_SCLS (dest) || SPEC_SCLS(dest)==S_REGISTER) {
577 SPEC_SCLS (dest) = SPEC_SCLS (src);
579 if (getenv("DEBUG_SANITY")) {
580 fprintf (stderr, "mergeSpec: ");
582 werror(E_TWO_OR_MORE_STORAGE_CLASSES, name);
586 /* copy all the specifications */
588 // we really should do:
590 if (SPEC_what(src)) {
591 if (SPEC_what(dest)) {
592 werror(W_DUPLICATE_SPEC, "what");
594 SPEC_what(dst)|=SPEC_what(src);
597 // but there are more important thing right now
599 SPEC_LONG (dest) |= SPEC_LONG (src);
600 dest->select.s._short|=src->select.s._short;
601 SPEC_USIGN (dest) |= SPEC_USIGN (src);
602 dest->select.s._signed|=src->select.s._signed;
603 SPEC_STAT (dest) |= SPEC_STAT (src);
604 SPEC_EXTR (dest) |= SPEC_EXTR (src);
605 SPEC_CONST(dest) |= SPEC_CONST (src);
606 SPEC_ABSA (dest) |= SPEC_ABSA (src);
607 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
608 SPEC_ADDR (dest) |= SPEC_ADDR (src);
609 SPEC_OCLS (dest) = SPEC_OCLS (src);
610 SPEC_BLEN (dest) |= SPEC_BLEN (src);
611 SPEC_BSTR (dest) |= SPEC_BSTR (src);
612 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
614 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
615 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
617 /* these are the only function attributes that will be set
618 in a specifier while parsing */
619 FUNC_NONBANKED(dest) |= FUNC_NONBANKED(src);
620 FUNC_BANKED(dest) |= FUNC_BANKED(src);
621 FUNC_ISCRITICAL(dest) |= FUNC_ISCRITICAL(src);
622 FUNC_ISREENT(dest) |= FUNC_ISREENT(src);
623 FUNC_ISNAKED(dest) |= FUNC_ISNAKED(src);
624 FUNC_ISISR(dest) |= FUNC_ISISR(src);
625 FUNC_INTNO(dest) |= FUNC_INTNO(src);
626 FUNC_REGBANK(dest) |= FUNC_REGBANK(src);
631 /*------------------------------------------------------------------*/
632 /* cloneSpec - copies the entire spec and returns a new spec */
633 /*------------------------------------------------------------------*/
635 cloneSpec (sym_link * src)
639 /* go thru chain till we find the specifier */
640 while (src && src->class != SPECIFIER)
644 memcpy (spec, src, sizeof (sym_link));
648 /*------------------------------------------------------------------*/
649 /* genSymName - generates and returns a name used for anonymous vars */
650 /*------------------------------------------------------------------*/
652 genSymName (int level)
654 static int gCount = 0;
655 static char gname[SDCC_NAME_MAX + 1];
657 sprintf (gname, "__%04d%04d", level, gCount++);
661 /*------------------------------------------------------------------*/
662 /* getSpec - returns the specifier part from a declaration chain */
663 /*------------------------------------------------------------------*/
665 getSpec (sym_link * p)
670 while (p && !(IS_SPEC (p)))
676 /*------------------------------------------------------------------*/
677 /* newCharLink() - creates an char type */
678 /*------------------------------------------------------------------*/
685 p->class = SPECIFIER;
686 SPEC_NOUN (p) = V_CHAR;
691 /*------------------------------------------------------------------*/
692 /* newFloatLink - a new Float type */
693 /*------------------------------------------------------------------*/
700 p->class = SPECIFIER;
701 SPEC_NOUN (p) = V_FLOAT;
706 /*------------------------------------------------------------------*/
707 /* newLongLink() - new long type */
708 /*------------------------------------------------------------------*/
715 p->class = SPECIFIER;
716 SPEC_NOUN (p) = V_INT;
722 /*------------------------------------------------------------------*/
723 /* newIntLink() - creates an int type */
724 /*------------------------------------------------------------------*/
731 p->class = SPECIFIER;
732 SPEC_NOUN (p) = V_INT;
737 /*------------------------------------------------------------------*/
738 /* getSize - returns size of a type chain in bits */
739 /*------------------------------------------------------------------*/
741 getSize (sym_link * p)
743 /* if nothing return 0 */
747 { /* if this is the specifier then */
748 switch (SPEC_NOUN (p))
749 { /* depending on the specifier type */
751 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
759 return SPEC_STRUCT (p)->size;
765 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
771 /* this is a specifier */
772 switch (DCL_TYPE (p))
777 return DCL_ELEM (p) * getSize (p->next);
794 /*------------------------------------------------------------------*/
795 /* bitsForType - returns # of bits required to store this type */
796 /*------------------------------------------------------------------*/
798 bitsForType (sym_link * p)
800 /* if nothing return 0 */
805 { /* if this is the specifier then */
807 switch (SPEC_NOUN (p))
808 { /* depending on the specifier type */
810 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
812 return FLOATSIZE * 8;
818 return SPEC_STRUCT (p)->size * 8;
824 return SPEC_BLEN (p);
830 /* this is a specifier */
831 switch (DCL_TYPE (p))
836 return DCL_ELEM (p) * getSize (p->next) * 8;
840 return (PTRSIZE * 8);
844 return (FPTRSIZE * 8);
846 return (GPTRSIZE * 8);
853 /*------------------------------------------------------------------*/
854 /* copySymbolChain - copies a symbol chain */
855 /*------------------------------------------------------------------*/
857 copySymbolChain (symbol * src)
864 dest = copySymbol (src);
865 dest->next = copySymbolChain (src->next);
869 /*------------------------------------------------------------------*/
870 /* copySymbol - makes a copy of a symbol */
871 /*------------------------------------------------------------------*/
873 copySymbol (symbol * src)
880 dest = newSymbol (src->name, src->level);
881 memcpy (dest, src, sizeof (symbol));
882 dest->level = src->level;
883 dest->block = src->block;
884 dest->ival = copyIlist (src->ival);
885 dest->type = copyLinkChain (src->type);
886 dest->etype = getSpec (dest->type);
888 dest->key = src->key;
889 dest->allocreq = src->allocreq;
893 /*------------------------------------------------------------------*/
894 /* reverseSyms - reverses the links for a symbol chain */
895 /*------------------------------------------------------------------*/
897 reverseSyms (symbol * sym)
899 symbol *prev, *curr, *next;
914 sym->next = (void *) NULL;
918 /*------------------------------------------------------------------*/
919 /* reverseLink - reverses the links for a type chain */
920 /*------------------------------------------------------------------*/
922 reverseLink (sym_link * type)
924 sym_link *prev, *curr, *next;
939 type->next = (void *) NULL;
943 /*------------------------------------------------------------------*/
944 /* addSymChain - adds a symbol chain to the symboltable */
945 /*------------------------------------------------------------------*/
947 addSymChain (symbol * symHead)
949 symbol *sym = symHead;
952 for (; sym != NULL; sym = sym->next)
955 checkTypeSanity(sym->etype, sym->name);
957 /* if already exists in the symbol table then check if
958 one of them is an extern definition if yes then
959 then check if the type match, if the types match then
960 delete the current entry and add the new entry */
961 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
962 csym->level == sym->level) {
964 /* one definition extern ? */
965 if (IS_EXTERN (csym->etype) || IS_EXTERN (sym->etype)) {
966 /* do types match ? */
967 if (compareType (csym->type, sym->type) != 1) {
969 werror (E_EXTERN_MISMATCH, csym->name);
972 /* delete current entry */
973 deleteSym (SymbolTab, csym, csym->name);
976 werror (E_DUPLICATE, sym->name);
982 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
987 /*------------------------------------------------------------------*/
988 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
989 /*------------------------------------------------------------------*/
991 funcInChain (sym_link * lnk)
1002 /*------------------------------------------------------------------*/
1003 /* structElemType - returns the type info of a sturct member */
1004 /*------------------------------------------------------------------*/
1006 structElemType (sym_link * stype, value * id)
1008 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
1009 sym_link *type, *etype;
1010 sym_link *petype = getSpec (stype);
1015 /* look for the id */
1018 if (strcmp (fields->rname, id->name) == 0)
1020 type = copyLinkChain (fields->type);
1021 etype = getSpec (type);
1022 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1023 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1026 fields = fields->next;
1028 werror (E_NOT_MEMBER, id->name);
1033 /*------------------------------------------------------------------*/
1034 /* getStructElement - returns element of a tructure definition */
1035 /*------------------------------------------------------------------*/
1037 getStructElement (structdef * sdef, symbol * sym)
1041 for (field = sdef->fields; field; field = field->next)
1042 if (strcmp (field->name, sym->name) == 0)
1045 werror (E_NOT_MEMBER, sym->name);
1047 return sdef->fields;
1050 /*------------------------------------------------------------------*/
1051 /* compStructSize - computes the size of a structure */
1052 /*------------------------------------------------------------------*/
1054 compStructSize (int su, structdef * sdef)
1056 int sum = 0, usum = 0;
1060 /* for the identifiers */
1061 loop = sdef->fields;
1064 /* create the internal name for this variable */
1065 sprintf (loop->rname, "_%s", loop->name);
1066 loop->offset = (su == UNION ? sum = 0 : sum);
1067 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1069 /* if this is a bit field */
1072 /* change it to a unsigned bit */
1073 SPEC_NOUN (loop->etype) = V_BIT;
1074 SPEC_USIGN (loop->etype) = 1;
1075 /* check if this fit into the remaining */
1076 /* bits of this byte else align it to the */
1077 /* next byte boundary */
1078 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1079 SPEC_BSTR (loop->etype) = bitOffset;
1080 if ((bitOffset += (loop->bitVar % 8)) == 8)
1083 else /* does not fit */ {
1085 SPEC_BSTR (loop->etype) = bitOffset;
1086 sum += (loop->bitVar / 8);
1087 bitOffset += (loop->bitVar % 8);
1089 /* if this is the last field then pad */
1090 if (!loop->next && bitOffset && bitOffset != 8) {
1096 checkDecl (loop, 1);
1097 sum += getSize (loop->type);
1100 /* if function then do the arguments for it */
1101 if (funcInChain (loop->type)) {
1102 processFuncArgs (loop, 1);
1107 /* if this is not a bitfield but the */
1108 /* previous one was and did not take */
1109 /* the whole byte then pad the rest */
1110 if ((loop && !loop->bitVar) && bitOffset) {
1115 /* if union then size = sizeof larget field */
1117 usum = max (usum, sum);
1121 return (su == UNION ? usum : sum);
1124 /*------------------------------------------------------------------*/
1125 /* checkSClass - check the storage class specification */
1126 /*------------------------------------------------------------------*/
1128 checkSClass (symbol * sym, int isProto)
1130 if (getenv("DEBUG_SANITY")) {
1131 fprintf (stderr, "checkSClass: %s \n", sym->name);
1134 /* type is literal can happen foe enums change
1136 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1137 SPEC_SCLS (sym->etype) = S_AUTO;
1139 /* if sfr or sbit then must also be */
1140 /* volatile the initial value will be xlated */
1141 /* to an absolute address */
1142 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1143 SPEC_SCLS (sym->etype) == S_SFR)
1145 SPEC_VOLATILE (sym->etype) = 1;
1146 /* if initial value given */
1149 SPEC_ABSA (sym->etype) = 1;
1150 SPEC_ADDR (sym->etype) =
1151 (int) list2int (sym->ival);
1156 /* if absolute address given then it mark it as
1158 if (IS_ABSOLUTE (sym->etype))
1159 SPEC_VOLATILE (sym->etype) = 1;
1161 /* global variables declared const put into code */
1162 if (sym->level == 0 &&
1163 SPEC_CONST (sym->etype)) {
1164 SPEC_SCLS (sym->etype) = S_CODE;
1167 /* global variable in code space is a constant */
1168 if (sym->level == 0 &&
1169 SPEC_SCLS (sym->etype) == S_CODE &&
1171 SPEC_CONST (sym->etype) = 1;
1174 /* if bit variable then no storage class can be */
1175 /* specified since bit is already a storage */
1176 if (IS_BITVAR (sym->etype) &&
1177 (SPEC_SCLS (sym->etype) != S_FIXED &&
1178 SPEC_SCLS (sym->etype) != S_SBIT &&
1179 SPEC_SCLS (sym->etype) != S_BIT)
1182 werror (E_BITVAR_STORAGE, sym->name);
1183 SPEC_SCLS (sym->etype) = S_FIXED;
1186 /* extern variables cannot be initialized */
1187 if (IS_EXTERN (sym->etype) && sym->ival)
1189 werror (E_EXTERN_INIT, sym->name);
1193 /* if this is an atomatic symbol */
1194 if (sym->level && (options.stackAuto || reentrant)) {
1195 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1196 SPEC_SCLS (sym->etype) == S_FIXED ||
1197 SPEC_SCLS (sym->etype) == S_REGISTER ||
1198 SPEC_SCLS (sym->etype) == S_STACK ||
1199 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1200 SPEC_SCLS (sym->etype) = S_AUTO;
1202 /* storage class may only be specified for statics */
1203 if (!IS_STATIC(sym->etype)) {
1204 werror (E_AUTO_ASSUMED, sym->name);
1209 /* automatic symbols cannot be given */
1210 /* an absolute address ignore it */
1212 SPEC_ABSA (sym->etype) &&
1213 (options.stackAuto || reentrant))
1215 werror (E_AUTO_ABSA, sym->name);
1216 SPEC_ABSA (sym->etype) = 0;
1219 /* arrays & pointers cannot be defined for bits */
1220 /* SBITS or SFRs or BIT */
1221 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1222 (SPEC_NOUN (sym->etype) == V_BIT ||
1223 SPEC_NOUN (sym->etype) == V_SBIT ||
1224 SPEC_SCLS (sym->etype) == S_SFR))
1225 werror (E_BIT_ARRAY, sym->name);
1227 /* if this is a bit|sbit then set length & start */
1228 if (SPEC_NOUN (sym->etype) == V_BIT ||
1229 SPEC_NOUN (sym->etype) == V_SBIT)
1231 SPEC_BLEN (sym->etype) = 1;
1232 SPEC_BSTR (sym->etype) = 0;
1236 /* variables declared in CODE space must have */
1237 /* initializers if not an extern */
1238 if (SPEC_SCLS (sym->etype) == S_CODE &&
1239 sym->ival == NULL &&
1241 port->mem.code_ro &&
1242 !IS_EXTERN (sym->etype) &&
1243 !funcInChain (sym->type))
1244 werror (E_CODE_NO_INIT, sym->name);
1247 /* if parameter or local variable then change */
1248 /* the storage class to reflect where the var will go */
1249 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1250 !IS_STATIC(sym->etype))
1252 if (options.stackAuto || (currFunc && IFFUNC_ISREENT (currFunc->type)))
1254 SPEC_SCLS (sym->etype) = (options.useXstack ?
1255 S_XSTACK : S_STACK);
1259 /* hack-o-matic! I see no reason why the useXstack option should ever
1260 * control this allcoation, but the code was originally that way, and
1261 * changing it for non-390 ports breaks the compiler badly.
1263 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1264 SPEC_SCLS (sym->etype) = (useXdata ?
1270 /*------------------------------------------------------------------*/
1271 /* changePointer - change pointer to functions */
1272 /*------------------------------------------------------------------*/
1274 changePointer (symbol * sym)
1278 /* go thru the chain of declarations */
1279 /* if we find a pointer to a function */
1280 /* unconditionally change it to a ptr */
1282 for (p = sym->type; p; p = p->next)
1284 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1285 DCL_TYPE (p) = GPOINTER;
1286 if (IS_PTR (p) && IS_FUNC (p->next))
1287 DCL_TYPE (p) = CPOINTER;
1291 /*------------------------------------------------------------------*/
1292 /* checkDecl - does semantic validation of a declaration */
1293 /*------------------------------------------------------------------*/
1295 checkDecl (symbol * sym, int isProto)
1298 checkSClass (sym, isProto); /* check the storage class */
1299 changePointer (sym); /* change pointers if required */
1301 /* if this is an array without any dimension
1302 then update the dimension from the initial value */
1303 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1304 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1309 /*------------------------------------------------------------------*/
1310 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1311 /*------------------------------------------------------------------*/
1313 copyLinkChain (sym_link * p)
1315 sym_link *head, *curr, *loop;
1318 head = loop = (curr ? newLink () : (void *) NULL);
1321 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1322 loop->next = (curr->next ? newLink () : (void *) NULL);
1331 /*------------------------------------------------------------------*/
1332 /* cleanUpBlock - cleansup the symbol table specified for all the */
1333 /* symbols in the given block */
1334 /*------------------------------------------------------------------*/
1336 cleanUpBlock (bucket ** table, int block)
1341 /* go thru the entire table */
1342 for (i = 0; i < 256; i++)
1344 for (chain = table[i]; chain; chain = chain->next)
1346 if (chain->block >= block)
1348 deleteSym (table, chain->sym, chain->name);
1354 /*------------------------------------------------------------------*/
1355 /* cleanUpLevel - cleansup the symbol table specified for all the */
1356 /* symbols in the given level */
1357 /*------------------------------------------------------------------*/
1359 cleanUpLevel (bucket ** table, int level)
1364 /* go thru the entire table */
1365 for (i = 0; i < 256; i++)
1367 for (chain = table[i]; chain; chain = chain->next)
1369 if (chain->level >= level)
1371 deleteSym (table, chain->sym, chain->name);
1377 /*------------------------------------------------------------------*/
1378 /* computeType - computes the resultant type from two types */
1379 /*------------------------------------------------------------------*/
1381 computeType (sym_link * type1, sym_link * type2)
1385 sym_link *etype1 = getSpec (type1);
1386 sym_link *etype2 = getSpec (type2);
1388 /* if one of them is a float then result is a float */
1389 /* here we assume that the types passed are okay */
1390 /* and can be cast to one another */
1391 /* which ever is greater in size */
1392 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1393 rType = newFloatLink ();
1395 /* if only one of them is a bit variable
1396 then the other one prevails */
1397 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1398 rType = copyLinkChain (type2);
1399 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1400 rType = copyLinkChain (type1);
1402 /* if one of them is a pointer then that
1405 rType = copyLinkChain (type1);
1406 else if (IS_PTR (type2))
1407 rType = copyLinkChain (type2);
1408 else if (getSize (type1) > getSize (type2))
1409 rType = copyLinkChain (type1);
1411 rType = copyLinkChain (type2);
1413 reType = getSpec (rType);
1415 /* if either of them unsigned but not val then make this unsigned */
1416 if (((!IS_LITERAL(type1) && SPEC_USIGN (etype1)) ||
1417 (!IS_LITERAL(type2) && SPEC_USIGN (etype2))) &&
1419 SPEC_USIGN (reType) = 1;
1421 SPEC_USIGN (reType) = 0;
1423 /* if result is a literal then make not so */
1424 if (IS_LITERAL (reType))
1425 SPEC_SCLS (reType) = S_REGISTER;
1430 /*--------------------------------------------------------------------*/
1431 /* compareType - will do type check return 1 if match, -1 if castable */
1432 /*--------------------------------------------------------------------*/
1434 compareType (sym_link * dest, sym_link * src)
1445 /* if dest is a declarator then */
1450 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1452 //checkFunction(src,dest);
1454 return compareType (dest->next, src->next);
1456 if (IS_PTR (src) && IS_GENPTR (dest))
1458 if (IS_PTR (dest) && IS_ARRAY (src)) {
1459 value *val=aggregateToPointer (valFromType(src));
1460 int res=compareType (dest, val->type);
1461 Safe_free(val->type);
1463 //return res ? -1 : 0;
1466 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1467 return compareType (dest->next, src);
1470 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1476 /* if one is a specifier and the other is not */
1477 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1478 (IS_SPEC (dest) && !IS_SPEC (src)))
1481 /* if one of them is a void then ok */
1482 if (SPEC_NOUN (dest) == V_VOID &&
1483 SPEC_NOUN (src) != V_VOID)
1486 if (SPEC_NOUN (dest) != V_VOID &&
1487 SPEC_NOUN (src) == V_VOID)
1490 /* if they are both bitfields then if the lengths
1491 and starts don't match */
1492 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1493 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1494 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1497 /* it is a specifier */
1498 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1500 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1501 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1502 getSize (dest) == getSize (src))
1504 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1509 else if (IS_STRUCT (dest))
1511 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1516 if (SPEC_LONG (dest) != SPEC_LONG (src))
1519 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1525 /*------------------------------------------------------------------*/
1526 /* inCalleeSaveList - return 1 if found in callee save list */
1527 /*------------------------------------------------------------------*/
1529 inCalleeSaveList (char *s)
1533 for (i = 0; options.calleeSaves[i]; i++)
1534 if (strcmp (options.calleeSaves[i], s) == 0)
1540 /*-----------------------------------------------------------------*/
1541 /* aggregateToPointer: change an agggregate type function */
1542 /* argument to a pointer to that type. */
1543 /*-----------------------------------------------------------------*/
1545 aggregateToPointer (value * val)
1547 if (IS_AGGREGATE (val->type))
1549 /* if this is a structure */
1550 /* then we need to add a new link */
1551 if (IS_STRUCT (val->type))
1553 /* first lets add DECLARATOR type */
1554 sym_link *p = val->type;
1556 werror (W_STRUCT_AS_ARG, val->name);
1557 val->type = newLink ();
1558 val->type->next = p;
1561 /* change to a pointer depending on the */
1562 /* storage class specified */
1563 switch (SPEC_SCLS (val->etype))
1566 DCL_TYPE (val->type) = IPOINTER;
1569 DCL_TYPE (val->type) = PPOINTER;
1572 if (SPEC_OCLS(val->etype)) {
1573 DCL_TYPE(val->type)=PTR_TYPE(SPEC_OCLS(val->etype));
1577 if (TARGET_IS_DS390)
1579 /* The AUTO and REGISTER classes should probably
1580 * also become generic pointers, but I haven't yet
1581 * devised a test case for that.
1583 DCL_TYPE (val->type) = GPOINTER;
1586 if (options.model==MODEL_LARGE) {
1587 DCL_TYPE (val->type) = FPOINTER;
1594 DCL_TYPE (val->type) = POINTER;
1597 DCL_TYPE (val->type) = CPOINTER;
1600 DCL_TYPE (val->type) = FPOINTER;
1603 DCL_TYPE (val->type) = EEPPOINTER;
1606 DCL_TYPE (val->type) = GPOINTER;
1609 /* is there is a symbol associated then */
1610 /* change the type of the symbol as well */
1613 val->sym->type = copyLinkChain (val->type);
1614 val->sym->etype = getSpec (val->sym->type);
1619 /*------------------------------------------------------------------*/
1620 /* checkFunction - does all kinds of check on a function */
1621 /*------------------------------------------------------------------*/
1623 checkFunction (symbol * sym, symbol *csym)
1625 value *exargs, *acargs;
1629 if (getenv("DEBUG_SANITY")) {
1630 fprintf (stderr, "checkFunction: %s ", sym->name);
1633 /* make sure the type is complete and sane */
1634 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1636 /* if not type then some kind of error */
1640 /* if the function has no type then make it return int */
1641 if (!sym->type->next)
1642 sym->type->next = sym->etype = newIntLink ();
1644 /* function cannot return aggregate */
1645 if (IS_AGGREGATE (sym->type->next))
1647 werror (E_FUNC_AGGR, sym->name);
1651 /* function cannot return bit */
1652 if (IS_BITVAR (sym->type->next))
1654 werror (E_FUNC_BIT, sym->name);
1658 /* check if this function is defined as calleeSaves
1659 then mark it as such */
1660 FUNC_CALLEESAVES(sym->type) = inCalleeSaveList (sym->name);
1662 /* if interrupt service routine */
1663 /* then it cannot have arguments */
1664 if (IFFUNC_ARGS(sym->type) && FUNC_ISISR (sym->type))
1666 if (!IS_VOID(FUNC_ARGS(sym->type)->type)) {
1667 werror (E_INT_ARGS, sym->name);
1668 FUNC_ARGS(sym->type)=NULL;
1672 if (!csym && !(csym = findSym (SymbolTab, sym, sym->name)))
1673 return 1; /* not defined nothing more to check */
1675 /* check if body already present */
1676 if (csym && IFFUNC_HASBODY(csym->type))
1678 werror (E_FUNC_BODY, sym->name);
1682 /* check the return value type */
1683 if (compareType (csym->type, sym->type) <= 0)
1685 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1686 printFromToType(csym->type, sym->type);
1690 if (FUNC_ISISR (csym->type) != FUNC_ISISR (sym->type))
1692 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1695 if (FUNC_REGBANK (csym->type) != FUNC_REGBANK (sym->type))
1697 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1700 if (IFFUNC_ISNAKED (csym->type) != IFFUNC_ISNAKED (sym->type))
1702 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1705 /* compare expected args with actual args */
1706 exargs = FUNC_ARGS(csym->type);
1707 acargs = FUNC_ARGS(sym->type);
1709 /* for all the expected args do */
1712 exargs = exargs->next, acargs = acargs->next, argCnt++)
1714 if (getenv("DEBUG_SANITY")) {
1715 fprintf (stderr, "checkFunction: %s ", exargs->name);
1717 /* make sure the type is complete and sane */
1718 checkTypeSanity(exargs->etype, exargs->name);
1720 /* If the actual argument is an array, any prototype
1721 * will have modified it to a pointer. Duplicate that
1724 if (IS_AGGREGATE (acargs->type))
1726 checkValue = copyValue (acargs);
1727 aggregateToPointer (checkValue);
1731 checkValue = acargs;
1734 if (compareType (exargs->type, checkValue->type) <= 0)
1736 werror (E_ARG_TYPE, argCnt);
1737 printFromToType(exargs->type, checkValue->type);
1742 /* if one them ended we have a problem */
1743 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1744 (!exargs && acargs && !IS_VOID (acargs->type)))
1745 werror (E_ARG_COUNT);
1747 /* replace with this defition */
1748 sym->cdef = csym->cdef;
1749 deleteSym (SymbolTab, csym, csym->name);
1750 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1751 if (IS_EXTERN (csym->etype) && !
1752 IS_EXTERN (sym->etype))
1754 addSet (&publics, sym);
1759 /*-----------------------------------------------------------------*/
1760 /* processFuncArgs - does some processing with function args */
1761 /*-----------------------------------------------------------------*/
1763 processFuncArgs (symbol * func, int ignoreName)
1768 /* if this function has variable argument list */
1769 /* then make the function a reentrant one */
1770 if (IFFUNC_HASVARARGS(func->type))
1771 FUNC_ISREENT(func->type)=1;
1773 /* check if this function is defined as calleeSaves
1774 then mark it as such */
1775 FUNC_CALLEESAVES(func->type) = inCalleeSaveList (func->name);
1777 /* loop thru all the arguments */
1778 val = FUNC_ARGS(func->type);
1780 /* if it is void then remove parameters */
1781 if (val && IS_VOID (val->type))
1783 FUNC_ARGS(func->type) = NULL;
1787 /* reset regparm for the port */
1788 (*port->reset_regparms) ();
1789 /* if any of the arguments is an aggregate */
1790 /* change it to pointer to the same type */
1793 /* mark it as a register parameter if
1794 the function does not have VA_ARG
1795 and as port dictates */
1796 if (!IFFUNC_HASVARARGS(func->type) &&
1797 (*port->reg_parm) (val->type))
1799 SPEC_REGPARM (val->etype) = 1;
1802 if (IS_AGGREGATE (val->type))
1804 aggregateToPointer (val);
1810 /* if this is an internal generated function call */
1812 /* ignore --stack-auto for this one, we don't know how it is compiled */
1813 /* simply trust on --int-long-reent or --float-reent */
1814 if (IFFUNC_ISREENT(func->type)) {
1818 /* if this function is reentrant or */
1819 /* automatics r 2b stacked then nothing */
1820 if (IFFUNC_ISREENT (func->type) || options.stackAuto)
1824 val = FUNC_ARGS(func->type);
1829 /* if a symbolname is not given */
1830 /* synthesize a variable name */
1834 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1835 val->sym = newSymbol (val->name, 1);
1836 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1837 val->sym->type = copyLinkChain (val->type);
1838 val->sym->etype = getSpec (val->sym->type);
1839 val->sym->_isparm = 1;
1840 strcpy (val->sym->rname, val->name);
1841 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1842 SPEC_STAT (func->etype);
1843 addSymChain (val->sym);
1846 else /* symbol name given create synth name */
1849 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1850 strcpy (val->sym->rname, val->name);
1851 val->sym->_isparm = 1;
1852 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1853 (options.model != MODEL_SMALL ? xdata : data);
1854 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1855 SPEC_STAT (func->etype);
1861 /*-----------------------------------------------------------------*/
1862 /* isSymbolEqual - compares two symbols return 1 if they match */
1863 /*-----------------------------------------------------------------*/
1865 isSymbolEqual (symbol * dest, symbol * src)
1867 /* if pointers match then equal */
1871 /* if one of them is null then don't match */
1875 /* if both of them have rname match on rname */
1876 if (dest->rname[0] && src->rname[0])
1877 return (!strcmp (dest->rname, src->rname));
1879 /* otherwise match on name */
1880 return (!strcmp (dest->name, src->name));
1883 void PT(sym_link *type)
1885 printTypeChain(type,0);
1887 /*-----------------------------------------------------------------*/
1888 /* printTypeChain - prints the type chain in human readable form */
1889 /*-----------------------------------------------------------------*/
1891 printTypeChain (sym_link * start, FILE * of)
1894 sym_link * type, * search;
1903 fprintf (of, "**err**");
1907 /* print the chain as it is written in the source: */
1908 /* start with the last entry */
1909 for (type = start; type && type->next; type = type->next)
1915 if (DCL_PTR_VOLATILE (type)) {
1916 fprintf (of, "volatile ");
1918 switch (DCL_TYPE (type))
1921 fprintf (of, "function ");
1924 if (DCL_PTR_CONST (type))
1925 fprintf (of, "const ");
1926 fprintf (of, "* generic ");
1929 if (DCL_PTR_CONST (type))
1930 fprintf (of, "const ");
1931 fprintf (of, "* code ");
1934 if (DCL_PTR_CONST (type))
1935 fprintf (of, "const ");
1936 fprintf (of, "* xdata ");
1939 if (DCL_PTR_CONST (type))
1940 fprintf (of, "const ");
1941 fprintf (of, "* eeprom ");
1945 if (DCL_PTR_CONST (type))
1946 fprintf (of, "const ");
1947 fprintf (of, "* near ");
1950 if (DCL_PTR_CONST (type))
1951 fprintf (of, "const ");
1952 fprintf (of, "* idata ");
1955 if (DCL_PTR_CONST (type))
1956 fprintf (of, "const ");
1957 fprintf (of, "* pdata ");
1960 if (DCL_PTR_CONST (type))
1961 fprintf (of, "const ");
1962 fprintf (of, "* unkown ");
1965 fprintf (of, "[] ");
1971 switch (SPEC_SCLS(type))
1973 case S_DATA: fprintf (of, "data "); break;
1974 case S_XDATA: fprintf (of, "xdata "); break;
1975 case S_SFR: fprintf (of, "sfr "); break;
1976 case S_SBIT: fprintf (of, "sbit "); break;
1977 case S_CODE: fprintf (of, "code "); break;
1978 case S_IDATA: fprintf (of, "idata "); break;
1979 case S_PDATA: fprintf (of, "pdata "); break;
1980 case S_LITERAL: fprintf (of, "literal "); break;
1981 case S_STACK: fprintf (of, "stack "); break;
1982 case S_XSTACK: fprintf (of, "xstack "); break;
1983 case S_BIT: fprintf (of, "bit "); break;
1984 case S_EEPROM: fprintf (of, "eeprom "); break;
1988 if (SPEC_VOLATILE (type))
1989 fprintf (of, "volatile ");
1990 if (SPEC_USIGN (type))
1991 fprintf (of, "unsigned ");
1992 if (SPEC_CONST (type))
1993 fprintf (of, "const ");
1995 switch (SPEC_NOUN (type))
1999 fprintf (of, "long ");
2000 fprintf (of, "int");
2004 fprintf (of, "char");
2008 fprintf (of, "void");
2012 fprintf (of, "float");
2016 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2020 fprintf (of, "sbit");
2024 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2028 fprintf (of, "double");
2032 fprintf (of, "unknown type");
2036 /* search entry in list before "type" */
2037 for (search = start; search && search->next != type;)
2038 search = search->next;
2047 /*-----------------------------------------------------------------*/
2048 /* cdbTypeInfo - print the type information for debugger */
2049 /*-----------------------------------------------------------------*/
2051 cdbTypeInfo (sym_link * type, FILE * of)
2053 fprintf (of, "{%d}", getSize (type));
2058 switch (DCL_TYPE (type))
2061 fprintf (of, "DF,");
2064 fprintf (of, "DG,");
2067 fprintf (of, "DC,");
2070 fprintf (of, "DX,");
2073 fprintf (of, "DD,");
2076 fprintf (of, "DI,");
2079 fprintf (of, "DP,");
2082 fprintf (of, "DA,");
2085 fprintf (of, "DA%d,", DCL_ELEM (type));
2093 switch (SPEC_NOUN (type))
2115 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2123 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2130 if (SPEC_USIGN (type))
2138 /*-----------------------------------------------------------------*/
2139 /* cdbSymbol - prints a symbol & its type information for debugger */
2140 /*-----------------------------------------------------------------*/
2142 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2154 fprintf (of, "S:"); /* symbol record */
2155 /* if this is not a structure symbol then
2156 we need to figure out the scope information */
2162 if (IS_STATIC (sym->etype))
2163 fprintf (of, "F%s$", moduleName); /* scope is file */
2165 fprintf (of, "G$"); /* scope is global */
2168 /* symbol is local */
2169 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2172 fprintf (of, "S$"); /* scope is structure */
2174 /* print the name, & mangled name */
2175 fprintf (of, "%s$%d$%d(", sym->name,
2176 sym->level, sym->block);
2178 cdbTypeInfo (sym->type, of);
2181 /* print the address space */
2182 map = SPEC_OCLS (sym->etype);
2183 fprintf (of, "%c,%d,%d",
2184 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2186 /* if assigned to registers then output register names */
2187 /* if this is a function then print
2188 if is it an interrupt routine & interrupt number
2189 and the register bank it is using */
2191 fprintf (of, ",%d,%d,%d", FUNC_ISISR (sym->type),
2192 FUNC_INTNO (sym->type), FUNC_REGBANK (sym->type));
2193 /* alternate location to find this symbol @ : eg registers
2200 /*-----------------------------------------------------------------*/
2201 /* cdbStruct - print a structure for debugger */
2202 /*-----------------------------------------------------------------*/
2204 cdbStruct (structdef * sdef, int block, FILE * of,
2205 int inStruct, char *tag)
2210 /* if block # then must have function scope */
2211 fprintf (of, "F%s$", moduleName);
2212 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2213 for (sym = sdef->fields; sym; sym = sym->next)
2215 fprintf (of, "({%d}", sym->offset);
2216 cdbSymbol (sym, of, TRUE, FALSE);
2224 /*------------------------------------------------------------------*/
2225 /* cdbStructBlock - calls struct printing for a blcks */
2226 /*------------------------------------------------------------------*/
2228 cdbStructBlock (int block, FILE * of)
2231 bucket **table = StructTab;
2235 /* go thru the entire table */
2236 for (i = 0; i < 256; i++)
2238 for (chain = table[i]; chain; chain = chain->next)
2240 if (chain->block >= block)
2242 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2248 /*-----------------------------------------------------------------*/
2249 /* powof2 - returns power of two for the number if number is pow 2 */
2250 /*-----------------------------------------------------------------*/
2252 powof2 (unsigned long num)
2265 if (n1s > 1 || nshifts == 0)
2281 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2282 symbol *__muldiv[3][3][2];
2283 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2284 sym_link *__multypes[3][2];
2285 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2286 symbol *__conv[2][3][2];
2287 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2288 symbol *__rlrr[2][3][2];
2290 sym_link *floatType;
2293 _mangleFunctionName(char *in)
2295 if (port->getMangledFunctionName)
2297 return port->getMangledFunctionName(in);
2305 /*-----------------------------------------------------------------*/
2306 /* initCSupport - create functions for C support routines */
2307 /*-----------------------------------------------------------------*/
2311 const char *smuldivmod[] =
2315 const char *sbwd[] =
2317 "char", "int", "long"
2323 const char *srlrr[] =
2328 int bwd, su, muldivmod, tofrom, rlrr;
2330 if (getenv("SDCC_NO_C_SUPPORT")) {
2331 /* for debugging only */
2335 floatType = newFloatLink ();
2337 for (bwd = 0; bwd < 3; bwd++)
2354 __multypes[bwd][0] = l;
2355 __multypes[bwd][1] = copyLinkChain (l);
2356 SPEC_USIGN (__multypes[bwd][1]) = 1;
2359 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2360 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2361 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2362 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2363 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2364 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2365 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2366 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2367 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2368 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2370 for (tofrom = 0; tofrom < 2; tofrom++)
2372 for (bwd = 0; bwd < 3; bwd++)
2374 for (su = 0; su < 2; su++)
2378 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2379 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2383 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2384 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2390 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2392 for (bwd = 0; bwd < 3; bwd++)
2394 for (su = 0; su < 2; su++)
2396 sprintf (buffer, "_%s%s%s",
2397 smuldivmod[muldivmod],
2400 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2401 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
2406 for (rlrr = 0; rlrr < 2; rlrr++)
2408 for (bwd = 0; bwd < 3; bwd++)
2410 for (su = 0; su < 2; su++)
2412 sprintf (buffer, "_%s%s%s",
2416 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2417 FUNC_NONBANKED (__rlrr[rlrr][bwd][su]->type) = 1;