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 -------------------------------------------------------------------------*/
28 char *nounName(sym_link *sl) {
29 switch (SPEC_NOUN(sl))
32 if (SPEC_LONG(sl)) return "long";
33 if (sl->select.s._short) return "short";
36 case V_FLOAT: return "float";
37 case V_CHAR: return "char";
38 case V_VOID: return "void";
39 case V_STRUCT: return "struct";
40 case V_LABEL: return "label";
41 case V_BIT: return "bit";
42 case V_SBIT: return "sbit";
43 case V_DOUBLE: return "double";
48 bucket *SymbolTab[256]; /* the symbol table */
49 bucket *StructTab[256]; /* the structure table */
50 bucket *TypedefTab[256]; /* the typedef table */
51 bucket *LabelTab[256]; /* the Label table */
52 bucket *enumTab[256]; /* enumerated table */
54 /*------------------------------------------------------------------*/
55 /* initSymt () - initialises symbol table related stuff */
56 /*------------------------------------------------------------------*/
62 for (i = 0; i < 256; i++)
63 SymbolTab[i] = StructTab[i] = (void *) NULL;
67 /*-----------------------------------------------------------------*/
68 /* newBucket - allocates & returns a new bucket */
69 /*-----------------------------------------------------------------*/
75 bp = Safe_calloc (1, sizeof (bucket));
80 /*-----------------------------------------------------------------*/
81 /* hashKey - computes the hashkey given a symbol name */
82 /*-----------------------------------------------------------------*/
84 hashKey (const char *s)
86 unsigned long key = 0;
93 /*-----------------------------------------------------------------*/
94 /* addSym - adds a symbol to the hash Table */
95 /*-----------------------------------------------------------------*/
97 addSym (bucket ** stab,
103 int i; /* index into the hash Table */
104 bucket *bp; /* temp bucket * */
106 if (getenv("DEBUG_SANITY")) {
107 fprintf (stderr, "addSym: %s ", sname);
109 /* Make sure sym is a symbol and not a structdef */
110 if (StructTab!=stab) {
111 /* make sure the type is complete and sane */
112 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
115 /* the symbols are always added at the head of the list */
117 /* get a free entry */
118 bp = Safe_calloc (1, sizeof (bucket));
120 bp->sym = sym; /* update the symbol pointer */
121 bp->level = level; /* update the nest level */
123 strcpy (bp->name, sname); /* copy the name into place */
125 /* if this is the first entry */
128 bp->prev = bp->next = (void *) NULL; /* point to nothing */
131 /* not first entry then add @ head of list */
141 /*-----------------------------------------------------------------*/
142 /* deleteSym - deletes a symbol from the hash Table entry */
143 /*-----------------------------------------------------------------*/
145 deleteSym (bucket ** stab, void *sym, char *sname)
153 /* find the symbol */
156 if (bp->sym == sym) /* found it then break out */
157 break; /* of the loop */
161 if (!bp) /* did not find it */
163 /* if this is the first one in the chain */
167 if (stab[i]) /* if chain ! empty */
168 stab[i]->prev = (void *) NULL;
170 /* middle || end of chain */
173 if (bp->next) /* if not end of chain */
174 bp->next->prev = bp->prev;
176 bp->prev->next = bp->next;
181 /*-----------------------------------------------------------------*/
182 /* findSym - finds a symbol in a table */
183 /*-----------------------------------------------------------------*/
185 findSym (bucket ** stab, void *sym, const char *sname)
189 bp = stab[hashKey (sname)];
192 if (bp->sym == sym || strcmp (bp->name, sname) == 0)
197 return (bp ? bp->sym : (void *) NULL);
200 /*-----------------------------------------------------------------*/
201 /* findSymWithLevel - finds a symbol with a name & level */
202 /*-----------------------------------------------------------------*/
204 findSymWithLevel (bucket ** stab, symbol * sym)
208 bp = stab[hashKey (sym->name)];
211 ** do the search from the head of the list since the
212 ** elements are added at the head it is ensured that
213 ** we will find the deeper definitions before we find
214 ** the global ones. we need to check for symbols with
215 ** level <= to the level given, if levels match then block
216 ** numbers need to match as well
221 if (strcmp (bp->name, sym->name) == 0 && bp->level <= sym->level)
223 /* if this is parameter then nothing else need to be checked */
224 if (((symbol *) (bp->sym))->_isparm)
226 /* if levels match then block numbers hsould also match */
227 if (bp->level && bp->level == sym->level && bp->block == sym->block)
229 /* if levels don't match then we are okay */
230 if (bp->level && bp->level != sym->level && bp->block <= sym->block)
232 /* if this is a global variable then we are ok too */
240 return (void *) NULL;
243 /*-----------------------------------------------------------------*/
244 /* findSymWithBlock - finds a symbol with name in with a block */
245 /*-----------------------------------------------------------------*/
247 findSymWithBlock (bucket ** stab, symbol * sym, int block)
251 bp = stab[hashKey (sym->name)];
254 if (strcmp (bp->name, sym->name) == 0 &&
260 return (bp ? bp->sym : (void *) NULL);
263 /*------------------------------------------------------------------*/
264 /* newSymbol () - returns a new pointer to a symbol */
265 /*------------------------------------------------------------------*/
267 newSymbol (char *name, int scope)
271 sym = Safe_calloc (1, sizeof (symbol));
273 strcpy (sym->name, name); /* copy the name */
274 sym->level = scope; /* set the level */
275 sym->block = currBlockno;
276 sym->lineDef = yylineno; /* set the line number */
280 /*------------------------------------------------------------------*/
281 /* newLink - creates a new link (declarator,specifier) */
282 /*------------------------------------------------------------------*/
288 p = Safe_calloc (1, sizeof (sym_link));
293 /*------------------------------------------------------------------*/
294 /* newStruct - creats a new structdef from the free list */
295 /*------------------------------------------------------------------*/
297 newStruct (char *tag)
301 s = Safe_calloc (1, sizeof (structdef));
303 strcpy (s->tag, tag); /* copy the tag */
307 /*------------------------------------------------------------------*/
308 /* pointerTypes - do the computation for the pointer types */
309 /*------------------------------------------------------------------*/
311 pointerTypes (sym_link * ptr, sym_link * type)
316 /* find the first pointer type */
317 while (ptr && !IS_PTR (ptr))
320 /* could not find it */
321 if (!ptr || IS_SPEC (ptr) ||
322 DCL_TYPE (ptr) != UPOINTER)
325 /* change the pointer type depending on the
326 storage class of the type */
329 DCL_PTR_CONST (ptr) = SPEC_CONST (type);
330 DCL_PTR_VOLATILE (ptr) = SPEC_VOLATILE (type);
331 switch (SPEC_SCLS (type))
334 DCL_TYPE (ptr) = FPOINTER;
337 DCL_TYPE (ptr) = IPOINTER;
340 DCL_TYPE (ptr) = PPOINTER;
343 DCL_TYPE (ptr) = POINTER;
346 DCL_PTR_CONST (ptr) = port->mem.code_ro;
347 DCL_TYPE (ptr) = CPOINTER;
350 DCL_TYPE (ptr) = EEPPOINTER;
353 DCL_TYPE (ptr) = GPOINTER;
356 /* the storage class of type ends here */
359 SPEC_VOLATILE (type) = 0;
362 /* now change all the remaining unknown pointers
363 to generic pointers */
366 if (!IS_SPEC (ptr) && DCL_TYPE (ptr) == UPOINTER)
367 DCL_TYPE (ptr) = GPOINTER;
371 /* same for the type although it is highly unlikely that
372 type will have a pointer */
375 if (!IS_SPEC (type) && DCL_TYPE (type) == UPOINTER)
376 DCL_TYPE (type) = GPOINTER;
382 /*------------------------------------------------------------------*/
383 /* addDecl - adds a declarator @ the end of a chain */
384 /*------------------------------------------------------------------*/
386 addDecl (symbol * sym, int type, sym_link * p)
392 /* if we are passed a link then set head & tail */
401 head = tail = newLink ();
402 DCL_TYPE (head) = type;
405 /* if this is the first entry */
413 if (IS_SPEC (sym->etype) && IS_SPEC (head) && head == tail)
415 sym->etype = mergeSpec (sym->etype, head);
419 if (IS_SPEC (sym->etype) && !IS_SPEC (head) && head == tail)
422 while (t->next != sym->etype)
425 tail->next = sym->etype;
429 sym->etype->next = head;
435 /* if the type is a unknown pointer and has
436 a tspec then take the storage class const & volatile
437 attribute from the tspec & make it those of this
441 DCL_TYPE (p) == UPOINTER &&
444 if (!IS_SPEC (sym->etype))
446 sym->etype = sym->etype->next = newLink ();
447 sym->etype->class = SPECIFIER;
449 SPEC_SCLS (sym->etype) = SPEC_SCLS (DCL_TSPEC (p));
450 SPEC_CONST (sym->etype) = SPEC_CONST (DCL_TSPEC (p));
451 SPEC_VOLATILE (sym->etype) = SPEC_VOLATILE (DCL_TSPEC (p));
452 DCL_TSPEC (p) = NULL;
457 /*------------------------------------------------------------------
458 checkTypeSanity: prevent the user from doing e.g.:
460 ------------------------------------------------------------------*/
461 void checkTypeSanity(sym_link *etype, char *name) {
465 if (getenv("DEBUG_SANITY")) {
466 fprintf (stderr, "sanity check skipped for %s (etype==0)\n", name);
471 if (!IS_SPEC(etype)) {
472 if (getenv("DEBUG_SANITY")) {
473 fprintf (stderr, "sanity check skipped for %s (!IS_SPEC)\n", name);
478 noun=nounName(etype);
480 if (getenv("DEBUG_SANITY")) {
481 fprintf (stderr, "checking sanity for %s\n", name);
484 if ((SPEC_NOUN(etype)==V_CHAR ||
485 SPEC_NOUN(etype)==V_FLOAT ||
486 SPEC_NOUN(etype)==V_DOUBLE ||
487 SPEC_NOUN(etype)==V_VOID) &&
488 (etype->select.s._short || SPEC_LONG(etype))) {
489 // long or short for char float double or void
490 werror (E_LONG_OR_SHORT_INVALID, noun, name);
492 if ((SPEC_NOUN(etype)==V_FLOAT ||
493 SPEC_NOUN(etype)==V_DOUBLE ||
494 SPEC_NOUN(etype)==V_VOID) &&
495 (etype->select.s._signed || SPEC_USIGN(etype))) {
496 // signed or unsigned for float double or void
497 werror (E_SIGNED_OR_UNSIGNED_INVALID, noun, name);
500 // special case for "short"
501 if (etype->select.s._short) {
502 SPEC_NOUN(etype) = options.shortisint ? V_INT : V_CHAR;
506 "const a;" or "data b;" or "signed s" or "long l"
508 if (!SPEC_NOUN(etype)) {
509 SPEC_NOUN(etype)=V_INT;
512 if (etype->select.s._signed && SPEC_USIGN(etype)) {
513 // signed AND unsigned
514 werror (E_SIGNED_AND_UNSIGNED_INVALID, noun, name);
516 if (etype->select.s._short && SPEC_LONG(etype)) {
518 werror (E_LONG_AND_SHORT_INVALID, noun, name);
523 /*------------------------------------------------------------------*/
524 /* mergeSpec - merges two specifiers and returns the new one */
525 /*------------------------------------------------------------------*/
527 mergeSpec (sym_link * dest, sym_link * src)
530 if (SPEC_NOUN(src)) {
531 if (!SPEC_NOUN(dest)) {
532 SPEC_NOUN(dest)=SPEC_NOUN(src);
534 /* we shouldn't redeclare the type */
535 if (getenv("DEBUG_SANITY")) {
536 fprintf (stderr, "mergeSpec: ");
538 werror(E_TWO_OR_MORE_DATA_TYPES, yylval.yychar);
542 if (SPEC_SCLS(src)) {
543 /* if destination has no storage class */
544 if (!SPEC_SCLS (dest) || SPEC_SCLS(dest)==S_REGISTER) {
545 SPEC_SCLS (dest) = SPEC_SCLS (src);
547 if (getenv("DEBUG_SANITY")) {
548 fprintf (stderr, "mergeSpec: ");
550 werror(E_TWO_OR_MORE_STORAGE_CLASSES, yylval.yychar);
554 /* copy all the specifications */
556 // we really should do:
558 if (SPEC_what(src)) {
559 if (SPEC_what(dest)) {
560 werror(W_DUPLICATE_SPEC, "what");
562 SPEC_what(dst)|=SPEC_what(src);
565 // but there are more important thing right now
567 SPEC_LONG (dest) |= SPEC_LONG (src);
568 dest->select.s._short|=src->select.s._short;
569 SPEC_USIGN (dest) |= SPEC_USIGN (src);
570 dest->select.s._signed|=src->select.s._signed;
571 SPEC_STAT (dest) |= SPEC_STAT (src);
572 SPEC_EXTR (dest) |= SPEC_EXTR (src);
573 SPEC_ABSA (dest) |= SPEC_ABSA (src);
574 SPEC_RENT (dest) |= SPEC_RENT (src);
575 SPEC_INTN (dest) |= SPEC_INTN (src);
576 SPEC_BANK (dest) |= SPEC_BANK (src);
577 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
578 SPEC_CRTCL (dest) |= SPEC_CRTCL (src);
579 SPEC_ADDR (dest) |= SPEC_ADDR (src);
580 SPEC_OCLS (dest) = SPEC_OCLS (src);
581 SPEC_BLEN (dest) |= SPEC_BLEN (src);
582 SPEC_BSTR (dest) |= SPEC_BSTR (src);
583 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
584 SPEC_NONBANKED (dest) |= SPEC_NONBANKED (src);
585 SPEC_NAKED (dest) |= SPEC_NAKED (src);
587 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
588 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
593 /*------------------------------------------------------------------*/
594 /* cloneSpec - copies the entire spec and returns a new spec */
595 /*------------------------------------------------------------------*/
597 cloneSpec (sym_link * src)
601 /* go thru chain till we find the specifier */
602 while (src && src->class != SPECIFIER)
606 memcpy (spec, src, sizeof (sym_link));
610 /*------------------------------------------------------------------*/
611 /* genSymName - generates and returns a name used for anonymous vars */
612 /*------------------------------------------------------------------*/
614 genSymName (int level)
616 static int gCount = 0;
617 static char gname[SDCC_NAME_MAX + 1];
619 sprintf (gname, "__%04d%04d", level, gCount++);
623 /*------------------------------------------------------------------*/
624 /* getSpec - returns the specifier part from a declaration chain */
625 /*------------------------------------------------------------------*/
627 getSpec (sym_link * p)
632 while (p && !(IS_SPEC (p)))
638 /*------------------------------------------------------------------*/
639 /* newCharLink() - creates an char type */
640 /*------------------------------------------------------------------*/
647 p->class = SPECIFIER;
648 SPEC_NOUN (p) = V_CHAR;
653 /*------------------------------------------------------------------*/
654 /* newFloatLink - a new Float type */
655 /*------------------------------------------------------------------*/
662 p->class = SPECIFIER;
663 SPEC_NOUN (p) = V_FLOAT;
668 /*------------------------------------------------------------------*/
669 /* newLongLink() - new long type */
670 /*------------------------------------------------------------------*/
677 p->class = SPECIFIER;
678 SPEC_NOUN (p) = V_INT;
684 /*------------------------------------------------------------------*/
685 /* newIntLink() - creates an int type */
686 /*------------------------------------------------------------------*/
693 p->class = SPECIFIER;
694 SPEC_NOUN (p) = V_INT;
699 /*------------------------------------------------------------------*/
700 /* getSize - returns size of a type chain in bits */
701 /*------------------------------------------------------------------*/
703 getSize (sym_link * p)
705 /* if nothing return 0 */
709 { /* if this is the specifier then */
710 switch (SPEC_NOUN (p))
711 { /* depending on the specifier type */
713 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
721 return SPEC_STRUCT (p)->size;
727 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
733 /* this is a specifier */
734 switch (DCL_TYPE (p))
739 return DCL_ELEM (p) * getSize (p->next);
756 /*------------------------------------------------------------------*/
757 /* bitsForType - returns # of bits required to store this type */
758 /*------------------------------------------------------------------*/
760 bitsForType (sym_link * p)
762 /* if nothing return 0 */
767 { /* if this is the specifier then */
769 switch (SPEC_NOUN (p))
770 { /* depending on the specifier type */
772 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
774 return FLOATSIZE * 8;
780 return SPEC_STRUCT (p)->size * 8;
786 return SPEC_BLEN (p);
792 /* this is a specifier */
793 switch (DCL_TYPE (p))
798 return DCL_ELEM (p) * getSize (p->next) * 8;
802 return (PTRSIZE * 8);
806 return (FPTRSIZE * 8);
808 return (GPTRSIZE * 8);
815 /*------------------------------------------------------------------*/
816 /* copySymbolChain - copies a symbol chain */
817 /*------------------------------------------------------------------*/
819 copySymbolChain (symbol * src)
826 dest = copySymbol (src);
827 dest->next = copySymbolChain (src->next);
831 /*------------------------------------------------------------------*/
832 /* copySymbol - makes a copy of a symbol */
833 /*------------------------------------------------------------------*/
835 copySymbol (symbol * src)
842 dest = newSymbol (src->name, src->level);
843 memcpy (dest, src, sizeof (symbol));
844 dest->level = src->level;
845 dest->block = src->block;
846 dest->ival = copyIlist (src->ival);
847 dest->type = copyLinkChain (src->type);
848 dest->etype = getSpec (dest->type);
850 dest->args = copyValueChain (src->args);
851 dest->key = src->key;
852 dest->calleeSave = src->calleeSave;
853 dest->allocreq = src->allocreq;
857 /*------------------------------------------------------------------*/
858 /* reverseSyms - reverses the links for a symbol chain */
859 /*------------------------------------------------------------------*/
861 reverseSyms (symbol * sym)
863 symbol *prev, *curr, *next;
878 sym->next = (void *) NULL;
882 /*------------------------------------------------------------------*/
883 /* reverseLink - reverses the links for a type chain */
884 /*------------------------------------------------------------------*/
886 reverseLink (sym_link * type)
888 sym_link *prev, *curr, *next;
903 type->next = (void *) NULL;
907 /*------------------------------------------------------------------*/
908 /* addSymChain - adds a symbol chain to the symboltable */
909 /*------------------------------------------------------------------*/
911 addSymChain (symbol * symHead)
913 symbol *sym = symHead;
917 for (; sym != NULL; sym = sym->next)
921 /* if already exists in the symbol table then check if
922 the previous was an extern definition if yes then
923 then check if the type match, if the types match then
924 delete the current entry and add the new entry */
925 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
926 csym->level == sym->level)
929 /* previous definition extern ? */
930 if (IS_EXTERN (csym->etype))
932 /* do types match ? */
933 if (checkType (csym->type, sym->type) != 1)
935 werror (E_DUPLICATE, csym->name);
937 /* delete current entry */
938 deleteSym (SymbolTab, csym, csym->name);
940 addSym (SymbolTab, sym, sym->name, sym->level, sym->block);
942 else /* not extern */
943 werror (E_DUPLICATE, sym->name);
947 /* check if previously defined */
948 if (csym && csym->level == sym->level)
950 /* if the previous one was declared as extern */
951 /* then check the type with the current one */
952 if (IS_EXTERN (csym->etype))
954 if (checkType (csym->type, sym->type) <= 0)
955 werror (W_EXTERN_MISMATCH, csym->name);
958 addSym (SymbolTab, sym, sym->name, sym->level, sym->block);
963 /*------------------------------------------------------------------*/
964 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
965 /*------------------------------------------------------------------*/
967 funcInChain (sym_link * lnk)
978 /*------------------------------------------------------------------*/
979 /* structElemType - returns the type info of a sturct member */
980 /*------------------------------------------------------------------*/
982 structElemType (sym_link * stype, value * id, value ** argsp)
984 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
985 sym_link *type, *etype;
986 sym_link *petype = getSpec (stype);
991 /* look for the id */
994 if (strcmp (fields->rname, id->name) == 0)
998 *argsp = fields->args;
1000 type = copyLinkChain (fields->type);
1001 etype = getSpec (type);
1002 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1003 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1006 fields = fields->next;
1008 werror (E_NOT_MEMBER, id->name);
1013 /*------------------------------------------------------------------*/
1014 /* getStructElement - returns element of a tructure definition */
1015 /*------------------------------------------------------------------*/
1017 getStructElement (structdef * sdef, symbol * sym)
1021 for (field = sdef->fields; field; field = field->next)
1022 if (strcmp (field->name, sym->name) == 0)
1025 werror (E_NOT_MEMBER, sym->name);
1027 return sdef->fields;
1030 /*------------------------------------------------------------------*/
1031 /* compStructSize - computes the size of a structure */
1032 /*------------------------------------------------------------------*/
1034 compStructSize (int su, structdef * sdef)
1036 int sum = 0, usum = 0;
1040 /* for the identifiers */
1041 loop = sdef->fields;
1044 /* create the internal name for this variable */
1045 sprintf (loop->rname, "_%s", loop->name);
1046 loop->offset = (su == UNION ? sum = 0 : sum);
1047 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1049 /* if this is a bit field */
1052 /* change it to a unsigned bit */
1053 SPEC_NOUN (loop->etype) = V_BIT;
1054 SPEC_USIGN (loop->etype) = 1;
1055 /* check if this fit into the remaining */
1056 /* bits of this byte else align it to the */
1057 /* next byte boundary */
1058 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1059 SPEC_BSTR (loop->etype) = bitOffset;
1060 if ((bitOffset += (loop->bitVar % 8)) == 8)
1063 else /* does not fit */ {
1065 SPEC_BSTR (loop->etype) = bitOffset;
1066 sum += (loop->bitVar / 8);
1067 bitOffset += (loop->bitVar % 8);
1069 /* if this is the last field then pad */
1070 if (!loop->next && bitOffset && bitOffset != 8) {
1077 sum += getSize (loop->type);
1080 /* if function then do the arguments for it */
1081 if (funcInChain (loop->type)) {
1082 processFuncArgs (loop, 1);
1087 /* if this is not a bitfield but the */
1088 /* previous one was and did not take */
1089 /* the whole byte then pad the rest */
1090 if ((loop && !loop->bitVar) && bitOffset) {
1095 /* if union then size = sizeof larget field */
1097 usum = max (usum, sum);
1101 return (su == UNION ? usum : sum);
1104 /*------------------------------------------------------------------*/
1105 /* checkSClass - check the storage class specification */
1106 /*------------------------------------------------------------------*/
1108 checkSClass (symbol * sym)
1110 /* type is literal can happen foe enums change
1112 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1113 SPEC_SCLS (sym->etype) = S_AUTO;
1115 /* if sfr or sbit then must also be */
1116 /* volatile the initial value will be xlated */
1117 /* to an absolute address */
1118 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1119 SPEC_SCLS (sym->etype) == S_SFR)
1121 SPEC_VOLATILE (sym->etype) = 1;
1122 /* if initial value given */
1125 SPEC_ABSA (sym->etype) = 1;
1126 SPEC_ADDR (sym->etype) =
1127 (int) list2int (sym->ival);
1132 /* if absolute address given then it mark it as
1134 if (IS_ABSOLUTE (sym->etype))
1135 SPEC_VOLATILE (sym->etype) = 1;
1137 /* global variables declared const put into code */
1138 if (sym->level == 0 &&
1139 SPEC_SCLS (sym->etype) == S_CONSTANT)
1141 SPEC_SCLS (sym->etype) = S_CODE;
1142 SPEC_CONST (sym->etype) = 1;
1145 /* global variable in code space is a constant */
1146 if (sym->level == 0 &&
1147 SPEC_SCLS (sym->etype) == S_CODE &&
1149 SPEC_CONST (sym->etype) = 1;
1152 /* if bit variable then no storage class can be */
1153 /* specified since bit is already a storage */
1154 if (IS_BITVAR (sym->etype) &&
1155 (SPEC_SCLS (sym->etype) != S_FIXED &&
1156 SPEC_SCLS (sym->etype) != S_SBIT &&
1157 SPEC_SCLS (sym->etype) != S_BIT)
1160 werror (E_BITVAR_STORAGE, sym->name);
1161 SPEC_SCLS (sym->etype) = S_FIXED;
1164 /* extern variables cannot be initialized */
1165 if (IS_EXTERN (sym->etype) && sym->ival)
1167 werror (E_EXTERN_INIT, sym->name);
1171 /* if this is an automatic symbol then */
1172 /* storage class will be ignored and */
1173 /* symbol will be allocated on stack/ */
1174 /* data depending on flag */
1176 (options.stackAuto || reentrant) &&
1177 (SPEC_SCLS (sym->etype) != S_AUTO &&
1178 SPEC_SCLS (sym->etype) != S_FIXED &&
1179 SPEC_SCLS (sym->etype) != S_REGISTER &&
1180 SPEC_SCLS (sym->etype) != S_STACK &&
1181 SPEC_SCLS (sym->etype) != S_XSTACK &&
1182 SPEC_SCLS (sym->etype) != S_CONSTANT))
1184 werror (E_AUTO_ASSUMED, sym->name);
1185 SPEC_SCLS (sym->etype) = S_AUTO;
1188 /* automatic symbols cannot be given */
1189 /* an absolute address ignore it */
1191 SPEC_ABSA (sym->etype) &&
1192 (options.stackAuto || reentrant))
1194 werror (E_AUTO_ABSA, sym->name);
1195 SPEC_ABSA (sym->etype) = 0;
1198 /* arrays & pointers cannot be defined for bits */
1199 /* SBITS or SFRs or BIT */
1200 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1201 (SPEC_NOUN (sym->etype) == V_BIT ||
1202 SPEC_NOUN (sym->etype) == V_SBIT ||
1203 SPEC_SCLS (sym->etype) == S_SFR))
1204 werror (E_BIT_ARRAY, sym->name);
1206 /* if this is a bit|sbit then set length & start */
1207 if (SPEC_NOUN (sym->etype) == V_BIT ||
1208 SPEC_NOUN (sym->etype) == V_SBIT)
1210 SPEC_BLEN (sym->etype) = 1;
1211 SPEC_BSTR (sym->etype) = 0;
1214 /* variables declared in CODE space must have */
1215 /* initializers if not an extern */
1216 if (SPEC_SCLS (sym->etype) == S_CODE &&
1217 sym->ival == NULL &&
1219 port->mem.code_ro &&
1220 !IS_EXTERN (sym->etype) &&
1221 !funcInChain (sym->type))
1222 werror (E_CODE_NO_INIT, sym->name);
1224 /* if parameter or local variable then change */
1225 /* the storage class to reflect where the var will go */
1226 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1227 !IS_STATIC(sym->etype))
1229 if (options.stackAuto || (currFunc && IS_RENT (currFunc->etype)))
1231 SPEC_SCLS (sym->etype) = (options.useXstack ?
1232 S_XSTACK : S_STACK);
1236 /* hack-o-matic! I see no reason why the useXstack option should ever
1237 * control this allcoation, but the code was originally that way, and
1238 * changing it for non-390 ports breaks the compiler badly.
1240 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1241 SPEC_SCLS (sym->etype) = (useXdata ?
1247 /*------------------------------------------------------------------*/
1248 /* changePointer - change pointer to functions */
1249 /*------------------------------------------------------------------*/
1251 changePointer (symbol * sym)
1255 /* go thru the chain of declarations */
1256 /* if we find a pointer to a function */
1257 /* unconditionally change it to a ptr */
1259 for (p = sym->type; p; p = p->next)
1261 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1262 DCL_TYPE (p) = GPOINTER;
1263 if (IS_PTR (p) && IS_FUNC (p->next))
1264 DCL_TYPE (p) = CPOINTER;
1268 /*------------------------------------------------------------------*/
1269 /* checkDecl - does semantic validation of a declaration */
1270 /*------------------------------------------------------------------*/
1272 checkDecl (symbol * sym)
1275 checkSClass (sym); /* check the storage class */
1276 changePointer (sym); /* change pointers if required */
1278 /* if this is an array without any dimension
1279 then update the dimension from the initial value */
1280 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1281 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1286 /*------------------------------------------------------------------*/
1287 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1288 /*------------------------------------------------------------------*/
1290 copyLinkChain (sym_link * p)
1292 sym_link *head, *curr, *loop;
1295 head = loop = (curr ? newLink () : (void *) NULL);
1298 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1299 loop->next = (curr->next ? newLink () : (void *) NULL);
1308 /*------------------------------------------------------------------*/
1309 /* cleanUpBlock - cleansup the symbol table specified for all the */
1310 /* symbols in the given block */
1311 /*------------------------------------------------------------------*/
1313 cleanUpBlock (bucket ** table, int block)
1318 /* go thru the entire table */
1319 for (i = 0; i < 256; i++)
1321 for (chain = table[i]; chain; chain = chain->next)
1323 if (chain->block >= block)
1325 deleteSym (table, chain->sym, chain->name);
1331 /*------------------------------------------------------------------*/
1332 /* cleanUpLevel - cleansup the symbol table specified for all the */
1333 /* symbols in the given level */
1334 /*------------------------------------------------------------------*/
1336 cleanUpLevel (bucket ** table, int level)
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->level >= level)
1348 deleteSym (table, chain->sym, chain->name);
1354 /*------------------------------------------------------------------*/
1355 /* computeType - computes the resultant type from two types */
1356 /*------------------------------------------------------------------*/
1358 computeType (sym_link * type1, sym_link * type2)
1362 sym_link *etype1 = getSpec (type1);
1363 sym_link *etype2 = getSpec (type2);
1365 /* if one of them is a float then result is a float */
1366 /* here we assume that the types passed are okay */
1367 /* and can be cast to one another */
1368 /* which ever is greater in size */
1369 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1370 rType = newFloatLink ();
1372 /* if only one of them is a bit variable
1373 then the other one prevails */
1374 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1375 rType = copyLinkChain (type2);
1376 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1377 rType = copyLinkChain (type1);
1379 /* if one of them is a pointer then that
1382 rType = copyLinkChain (type1);
1383 else if (IS_PTR (type2))
1384 rType = copyLinkChain (type2);
1385 else if (getSize (type1) > getSize (type2))
1386 rType = copyLinkChain (type1);
1388 rType = copyLinkChain (type2);
1390 reType = getSpec (rType);
1392 /* if either of them unsigned then make this unsigned */
1393 if ((SPEC_USIGN (etype1) || SPEC_USIGN (etype2)) && !IS_FLOAT (reType))
1394 SPEC_USIGN (reType) = 1;
1396 /* if result is a literal then make not so */
1397 if (IS_LITERAL (reType))
1398 SPEC_SCLS (reType) = S_REGISTER;
1403 /*------------------------------------------------------------------*/
1404 /* checkType - will do type check return 1 if match */
1405 /*------------------------------------------------------------------*/
1407 checkType (sym_link * dest, sym_link * src)
1418 /* if dest is a declarator then */
1423 if (DCL_TYPE (src) == DCL_TYPE (dest))
1424 return checkType (dest->next, src->next);
1425 else if (IS_PTR (src) && IS_PTR (dest))
1427 else if (IS_PTR (dest) && IS_ARRAY (src))
1429 else if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1430 return -1 * checkType (dest->next, src);
1434 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1440 /* if one is a specifier and the other is not */
1441 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1442 (IS_SPEC (dest) && !IS_SPEC (src)))
1445 /* if one of them is a void then ok */
1446 if (SPEC_NOUN (dest) == V_VOID &&
1447 SPEC_NOUN (src) != V_VOID)
1450 if (SPEC_NOUN (dest) != V_VOID &&
1451 SPEC_NOUN (src) == V_VOID)
1454 /* if they are both bitfields then if the lengths
1455 and starts don't match */
1456 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1457 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1458 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1461 /* it is a specifier */
1462 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1464 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1465 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1466 getSize (dest) == getSize (src))
1468 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1473 else if (IS_STRUCT (dest))
1475 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1480 if (SPEC_LONG (dest) != SPEC_LONG (src))
1483 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1489 /*------------------------------------------------------------------*/
1490 /* inCalleeSaveList - return 1 if found in calle save list */
1491 /*------------------------------------------------------------------*/
1493 inCalleeSaveList (char *s)
1497 for (i = 0; options.calleeSaves[i]; i++)
1498 if (strcmp (options.calleeSaves[i], s) == 0)
1504 /*-----------------------------------------------------------------*/
1505 /* aggregateArgToPointer: change an agggregate type function */
1506 /* argument to a pointer to that type. */
1507 /*-----------------------------------------------------------------*/
1509 aggregateArgToPointer (value * val)
1511 if (IS_AGGREGATE (val->type))
1513 /* if this is a structure */
1514 /* then we need to add a new link */
1515 if (IS_STRUCT (val->type))
1517 /* first lets add DECLARATOR type */
1518 sym_link *p = val->type;
1520 werror (W_STRUCT_AS_ARG, val->name);
1521 val->type = newLink ();
1522 val->type->next = p;
1525 /* change to a pointer depending on the */
1526 /* storage class specified */
1527 switch (SPEC_SCLS (val->etype))
1530 DCL_TYPE (val->type) = IPOINTER;
1533 DCL_TYPE (val->type) = PPOINTER;
1536 if (TARGET_IS_DS390)
1538 /* The AUTO and REGISTER classes should probably
1539 * also become generic pointers, but I haven't yet
1540 * devised a test case for that.
1542 DCL_TYPE (val->type) = GPOINTER;
1549 DCL_TYPE (val->type) = POINTER;
1552 DCL_TYPE (val->type) = CPOINTER;
1555 DCL_TYPE (val->type) = FPOINTER;
1558 DCL_TYPE (val->type) = EEPPOINTER;
1561 DCL_TYPE (val->type) = GPOINTER;
1564 /* is there is a symbol associated then */
1565 /* change the type of the symbol as well */
1568 val->sym->type = copyLinkChain (val->type);
1569 val->sym->etype = getSpec (val->sym->type);
1573 /*------------------------------------------------------------------*/
1574 /* checkFunction - does all kinds of check on a function */
1575 /*------------------------------------------------------------------*/
1577 checkFunction (symbol * sym)
1580 value *exargs, *acargs;
1583 if (getenv("DEBUG_SANITY")) {
1584 fprintf (stderr, "checkFunction: %s ", sym->name);
1587 /* make sure the type is complete and sane */
1588 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1590 /* if not type then some kind of error */
1594 /* if the function has no type then make it return int */
1595 if (!sym->type->next)
1596 sym->type->next = sym->etype = newIntLink ();
1598 /* function cannot return aggregate */
1599 if (IS_AGGREGATE (sym->type->next))
1601 werror (E_FUNC_AGGR, sym->name);
1605 /* function cannot return bit */
1606 if (IS_BITVAR (sym->type->next))
1608 werror (E_FUNC_BIT, sym->name);
1612 /* check if this function is defined as calleeSaves
1613 then mark it as such */
1614 sym->calleeSave = inCalleeSaveList (sym->name);
1616 /* if interrupt service routine */
1617 /* then it cannot have arguments */
1618 if (sym->args && IS_ISR (sym->etype) && !IS_VOID (sym->args->type))
1620 werror (E_INT_ARGS, sym->name);
1624 if (!(csym = findSym (SymbolTab, sym, sym->name)))
1625 return 1; /* not defined nothing more to check */
1627 /* check if body already present */
1628 if (csym && csym->fbody)
1630 werror (E_FUNC_BODY, sym->name);
1634 /* check the return value type */
1635 if (checkType (csym->type, sym->type) <= 0)
1637 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1638 werror (E_CONTINUE, "previous definition type ");
1639 printTypeChain (csym->type, stderr);
1640 fprintf (stderr, "\n");
1641 werror (E_CONTINUE, "current definition type ");
1642 printTypeChain (sym->type, stderr);
1643 fprintf (stderr, "\n");
1647 if (SPEC_INTRTN (csym->etype) != SPEC_INTRTN (sym->etype))
1649 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1653 if (SPEC_BANK (csym->etype) != SPEC_BANK (sym->etype))
1655 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1659 /* compare expected agrs with actual args */
1660 exargs = csym->args;
1663 /* for all the expected args do */
1666 exargs = exargs->next, acargs = acargs->next, argCnt++)
1669 /* If the actual argument is an array, any prototype
1670 * will have modified it to a pointer. Duplicate that
1673 if (IS_AGGREGATE (acargs->type))
1675 checkValue = copyValue (acargs);
1676 aggregateArgToPointer (checkValue);
1680 checkValue = acargs;
1683 if (checkType (exargs->type, checkValue->type) <= 0)
1685 werror (E_ARG_TYPE, argCnt);
1690 /* if one them ended we have a problem */
1691 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1692 (!exargs && acargs && !IS_VOID (acargs->type)))
1693 werror (E_ARG_COUNT);
1695 /* replace with this defition */
1696 sym->cdef = csym->cdef;
1697 deleteSym (SymbolTab, csym, csym->name);
1698 addSym (SymbolTab, sym, sym->name, sym->level, sym->block);
1699 if (IS_EXTERN (csym->etype) && !
1700 IS_EXTERN (sym->etype))
1702 addSet (&publics, sym);
1707 /*-----------------------------------------------------------------*/
1708 /* processFuncArgs - does some processing with function args */
1709 /*-----------------------------------------------------------------*/
1711 processFuncArgs (symbol * func, int ignoreName)
1716 /* if this function has variable argument list */
1717 /* then make the function a reentrant one */
1719 SPEC_RENT (func->etype) = 1;
1721 /* check if this function is defined as calleeSaves
1722 then mark it as such */
1723 func->calleeSave = inCalleeSaveList (func->name);
1725 val = func->args; /* loop thru all the arguments */
1727 /* if it is void then remove parameters */
1728 if (val && IS_VOID (val->type))
1734 /* reset regparm for the port */
1735 (*port->reset_regparms) ();
1736 /* if any of the arguments is an aggregate */
1737 /* change it to pointer to the same type */
1740 /* mark it as a register parameter if
1741 the function does not have VA_ARG
1742 and as port dictates */
1743 if (!func->hasVargs &&
1744 (*port->reg_parm) (val->type))
1746 SPEC_REGPARM (val->etype) = 1;
1749 if (IS_AGGREGATE (val->type))
1751 aggregateArgToPointer (val);
1757 /* if this is an internal generated function call */
1759 /* ignore --stack-auto for this one, we don't know how it is compiled */
1760 /* simply trust on --int-long-reent or --float-reent */
1761 if (IS_RENT(func->etype)) {
1765 /* if this function is reentrant or */
1766 /* automatics r 2b stacked then nothing */
1767 if (IS_RENT (func->etype) || options.stackAuto)
1776 /* if a symbolname is not given */
1777 /* synthesize a variable name */
1781 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1782 val->sym = newSymbol (val->name, 1);
1783 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1784 val->sym->type = copyLinkChain (val->type);
1785 val->sym->etype = getSpec (val->sym->type);
1786 val->sym->_isparm = 1;
1787 strcpy (val->sym->rname, val->name);
1788 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1789 SPEC_STAT (func->etype);
1790 addSymChain (val->sym);
1793 else /* symbol name given create synth name */
1796 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1797 strcpy (val->sym->rname, val->name);
1798 val->sym->_isparm = 1;
1799 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1800 (options.model != MODEL_SMALL ? xdata : data);
1801 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1802 SPEC_STAT (func->etype);
1808 /*-----------------------------------------------------------------*/
1809 /* isSymbolEqual - compares two symbols return 1 if they match */
1810 /*-----------------------------------------------------------------*/
1812 isSymbolEqual (symbol * dest, symbol * src)
1814 /* if pointers match then equal */
1818 /* if one of them is null then don't match */
1822 /* if both of them have rname match on rname */
1823 if (dest->rname[0] && src->rname[0])
1824 return (!strcmp (dest->rname, src->rname));
1826 /* otherwise match on name */
1827 return (!strcmp (dest->name, src->name));
1830 void PT(sym_link *type)
1832 printTypeChain(type,0);
1834 /*-----------------------------------------------------------------*/
1835 /* printTypeChain - prints the type chain in human readable form */
1836 /*-----------------------------------------------------------------*/
1838 printTypeChain (sym_link * type, FILE * of)
1852 if (DCL_PTR_VOLATILE(type)) {
1853 fprintf (of, "volatile ");
1855 switch (DCL_TYPE (type))
1858 fprintf (of, "function ");
1861 fprintf (of, "_generic * ");
1862 if (DCL_PTR_CONST (type))
1863 fprintf (of, "const ");
1866 fprintf (of, "_code * ");
1867 if (DCL_PTR_CONST (type))
1868 fprintf (of, "const ");
1871 fprintf (of, "_far * ");
1872 if (DCL_PTR_CONST (type))
1873 fprintf (of, "const ");
1876 fprintf (of, "_eeprom * ");
1877 if (DCL_PTR_CONST (type))
1878 fprintf (of, "const ");
1882 fprintf (of, "_near * ");
1883 if (DCL_PTR_CONST (type))
1884 fprintf (of, "const ");
1887 fprintf (of, "_idata *");
1888 if (DCL_PTR_CONST (type))
1889 fprintf (of, "const ");
1892 fprintf (of, "_pdata *");
1893 if (DCL_PTR_CONST (type))
1894 fprintf (of, "const ");
1897 fprintf (of, " _unkown *");
1898 if (DCL_PTR_CONST (type))
1899 fprintf (of, "const ");
1902 fprintf (of, "array of ");
1908 if (SPEC_VOLATILE (type))
1909 fprintf (of, "volatile ");
1910 if (SPEC_USIGN (type))
1911 fprintf (of, "unsigned ");
1912 if (SPEC_CONST (type))
1913 fprintf (of, "const ");
1915 switch (SPEC_NOUN (type))
1919 fprintf (of, "long ");
1920 fprintf (of, "int ");
1924 fprintf (of, "char ");
1928 fprintf (of, "void ");
1932 fprintf (of, "float ");
1936 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
1940 fprintf (of, "sbit ");
1944 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
1948 fprintf (of, "double ");
1952 fprintf (of, "unknown type ");
1962 /*-----------------------------------------------------------------*/
1963 /* cdbTypeInfo - print the type information for debugger */
1964 /*-----------------------------------------------------------------*/
1966 cdbTypeInfo (sym_link * type, FILE * of)
1968 fprintf (of, "{%d}", getSize (type));
1973 switch (DCL_TYPE (type))
1976 fprintf (of, "DF,");
1979 fprintf (of, "DG,");
1982 fprintf (of, "DC,");
1985 fprintf (of, "DX,");
1988 fprintf (of, "DD,");
1991 fprintf (of, "DI,");
1994 fprintf (of, "DP,");
1997 fprintf (of, "DA,");
2000 fprintf (of, "DA%d,", DCL_ELEM (type));
2008 switch (SPEC_NOUN (type))
2030 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2038 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2045 if (SPEC_USIGN (type))
2053 /*-----------------------------------------------------------------*/
2054 /* cdbSymbol - prints a symbol & its type information for debugger */
2055 /*-----------------------------------------------------------------*/
2057 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2069 fprintf (of, "S:"); /* symbol record */
2070 /* if this is not a structure symbol then
2071 we need to figure out the scope information */
2077 if (IS_STATIC (sym->etype))
2078 fprintf (of, "F%s$", moduleName); /* scope is file */
2080 fprintf (of, "G$"); /* scope is global */
2083 /* symbol is local */
2084 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2087 fprintf (of, "S$"); /* scope is structure */
2089 /* print the name, & mangled name */
2090 fprintf (of, "%s$%d$%d(", sym->name,
2091 sym->level, sym->block);
2093 cdbTypeInfo (sym->type, of);
2096 /* print the address space */
2097 map = SPEC_OCLS (sym->etype);
2098 fprintf (of, "%c,%d,%d",
2099 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2101 /* if assigned to registers then output register names */
2102 /* if this is a function then print
2103 if is it an interrupt routine & interrupt number
2104 and the register bank it is using */
2106 fprintf (of, ",%d,%d,%d", SPEC_INTRTN (sym->etype),
2107 SPEC_INTN (sym->etype), SPEC_BANK (sym->etype));
2108 /* alternate location to find this symbol @ : eg registers
2115 /*-----------------------------------------------------------------*/
2116 /* cdbStruct - print a structure for debugger */
2117 /*-----------------------------------------------------------------*/
2119 cdbStruct (structdef * sdef, int block, FILE * of,
2120 int inStruct, char *tag)
2125 /* if block # then must have function scope */
2126 fprintf (of, "F%s$", moduleName);
2127 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2128 for (sym = sdef->fields; sym; sym = sym->next)
2130 fprintf (of, "({%d}", sym->offset);
2131 cdbSymbol (sym, of, TRUE, FALSE);
2139 /*------------------------------------------------------------------*/
2140 /* cdbStructBlock - calls struct printing for a blcks */
2141 /*------------------------------------------------------------------*/
2143 cdbStructBlock (int block, FILE * of)
2146 bucket **table = StructTab;
2150 /* go thru the entire table */
2151 for (i = 0; i < 256; i++)
2153 for (chain = table[i]; chain; chain = chain->next)
2155 if (chain->block >= block)
2157 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2163 /*-----------------------------------------------------------------*/
2164 /* powof2 - returns power of two for the number if number is pow 2 */
2165 /*-----------------------------------------------------------------*/
2167 powof2 (unsigned long num)
2180 if (n1s > 1 || nshifts == 0)
2196 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2197 symbol *__muldiv[3][3][2];
2198 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2199 sym_link *__multypes[3][2];
2200 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2201 symbol *__conv[2][3][2];
2203 sym_link *floatType;
2206 _makeRegParam (symbol * sym)
2210 val = sym->args; /* loop thru all the arguments */
2212 /* reset regparm for the port */
2213 (*port->reset_regparms) ();
2216 SPEC_REGPARM (val->etype) = 1;
2221 /*-----------------------------------------------------------------*/
2222 /* initCSupport - create functions for C support routines */
2223 /*-----------------------------------------------------------------*/
2227 const char *smuldivmod[] =
2231 const char *sbwd[] =
2233 "char", "int", "long"
2240 int bwd, su, muldivmod, tofrom;
2242 floatType = newFloatLink ();
2244 for (bwd = 0; bwd < 3; bwd++)
2261 __multypes[bwd][0] = l;
2262 __multypes[bwd][1] = copyLinkChain (l);
2263 SPEC_USIGN (__multypes[bwd][1]) = 1;
2266 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2267 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2268 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2269 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2270 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2271 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2272 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2273 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2274 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2275 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2277 for (tofrom = 0; tofrom < 2; tofrom++)
2279 for (bwd = 0; bwd < 3; bwd++)
2281 for (su = 0; su < 2; su++)
2285 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2286 __conv[tofrom][bwd][su] = funcOfType (buffer, __multypes[bwd][su], floatType, 1, options.float_rent);
2290 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2291 __conv[tofrom][bwd][su] = funcOfType (buffer, floatType, __multypes[bwd][su], 1, options.float_rent);
2297 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2299 for (bwd = 0; bwd < 3; bwd++)
2301 for (su = 0; su < 2; su++)
2303 sprintf (buffer, "_%s%s%s",
2304 smuldivmod[muldivmod],
2307 __muldiv[muldivmod][bwd][su] = funcOfType (buffer, __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2308 SPEC_NONBANKED (__muldiv[muldivmod][bwd][su]->etype) = 1;
2309 if (bwd < port->muldiv.force_reg_param_below)
2310 _makeRegParam (__muldiv[muldivmod][bwd][su]);