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;
503 etype->select.s._short = 0;
507 "const a;" or "data b;" or "signed s" or "long l"
509 if (!SPEC_NOUN(etype)) {
510 SPEC_NOUN(etype)=V_INT;
513 if (etype->select.s._signed && SPEC_USIGN(etype)) {
514 // signed AND unsigned
515 werror (E_SIGNED_AND_UNSIGNED_INVALID, noun, name);
517 if (etype->select.s._short && SPEC_LONG(etype)) {
519 werror (E_LONG_AND_SHORT_INVALID, noun, name);
524 /*------------------------------------------------------------------*/
525 /* mergeSpec - merges two specifiers and returns the new one */
526 /*------------------------------------------------------------------*/
528 mergeSpec (sym_link * dest, sym_link * src)
531 if (SPEC_NOUN(src)) {
532 if (!SPEC_NOUN(dest)) {
533 SPEC_NOUN(dest)=SPEC_NOUN(src);
535 /* we shouldn't redeclare the type */
536 if (getenv("DEBUG_SANITY")) {
537 fprintf (stderr, "mergeSpec: ");
539 werror(E_TWO_OR_MORE_DATA_TYPES, yylval.yychar);
543 if (SPEC_SCLS(src)) {
544 /* if destination has no storage class */
545 if (!SPEC_SCLS (dest) || SPEC_SCLS(dest)==S_REGISTER) {
546 SPEC_SCLS (dest) = SPEC_SCLS (src);
548 if (getenv("DEBUG_SANITY")) {
549 fprintf (stderr, "mergeSpec: ");
551 werror(E_TWO_OR_MORE_STORAGE_CLASSES, yylval.yychar);
555 /* copy all the specifications */
557 // we really should do:
559 if (SPEC_what(src)) {
560 if (SPEC_what(dest)) {
561 werror(W_DUPLICATE_SPEC, "what");
563 SPEC_what(dst)|=SPEC_what(src);
566 // but there are more important thing right now
568 SPEC_LONG (dest) |= SPEC_LONG (src);
569 dest->select.s._short|=src->select.s._short;
570 SPEC_USIGN (dest) |= SPEC_USIGN (src);
571 dest->select.s._signed|=src->select.s._signed;
572 SPEC_STAT (dest) |= SPEC_STAT (src);
573 SPEC_EXTR (dest) |= SPEC_EXTR (src);
574 SPEC_ABSA (dest) |= SPEC_ABSA (src);
575 SPEC_RENT (dest) |= SPEC_RENT (src);
576 SPEC_INTN (dest) |= SPEC_INTN (src);
577 SPEC_BANK (dest) |= SPEC_BANK (src);
578 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
579 SPEC_CRTCL (dest) |= SPEC_CRTCL (src);
580 SPEC_ADDR (dest) |= SPEC_ADDR (src);
581 SPEC_OCLS (dest) = SPEC_OCLS (src);
582 SPEC_BLEN (dest) |= SPEC_BLEN (src);
583 SPEC_BSTR (dest) |= SPEC_BSTR (src);
584 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
585 SPEC_NONBANKED (dest) |= SPEC_NONBANKED (src);
586 SPEC_NAKED (dest) |= SPEC_NAKED (src);
588 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
589 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
594 /*------------------------------------------------------------------*/
595 /* cloneSpec - copies the entire spec and returns a new spec */
596 /*------------------------------------------------------------------*/
598 cloneSpec (sym_link * src)
602 /* go thru chain till we find the specifier */
603 while (src && src->class != SPECIFIER)
607 memcpy (spec, src, sizeof (sym_link));
611 /*------------------------------------------------------------------*/
612 /* genSymName - generates and returns a name used for anonymous vars */
613 /*------------------------------------------------------------------*/
615 genSymName (int level)
617 static int gCount = 0;
618 static char gname[SDCC_NAME_MAX + 1];
620 sprintf (gname, "__%04d%04d", level, gCount++);
624 /*------------------------------------------------------------------*/
625 /* getSpec - returns the specifier part from a declaration chain */
626 /*------------------------------------------------------------------*/
628 getSpec (sym_link * p)
633 while (p && !(IS_SPEC (p)))
639 /*------------------------------------------------------------------*/
640 /* newCharLink() - creates an char type */
641 /*------------------------------------------------------------------*/
648 p->class = SPECIFIER;
649 SPEC_NOUN (p) = V_CHAR;
654 /*------------------------------------------------------------------*/
655 /* newFloatLink - a new Float type */
656 /*------------------------------------------------------------------*/
663 p->class = SPECIFIER;
664 SPEC_NOUN (p) = V_FLOAT;
669 /*------------------------------------------------------------------*/
670 /* newLongLink() - new long type */
671 /*------------------------------------------------------------------*/
678 p->class = SPECIFIER;
679 SPEC_NOUN (p) = V_INT;
685 /*------------------------------------------------------------------*/
686 /* newIntLink() - creates an int type */
687 /*------------------------------------------------------------------*/
694 p->class = SPECIFIER;
695 SPEC_NOUN (p) = V_INT;
700 /*------------------------------------------------------------------*/
701 /* getSize - returns size of a type chain in bits */
702 /*------------------------------------------------------------------*/
704 getSize (sym_link * p)
706 /* if nothing return 0 */
710 { /* if this is the specifier then */
711 switch (SPEC_NOUN (p))
712 { /* depending on the specifier type */
714 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
722 return SPEC_STRUCT (p)->size;
728 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
734 /* this is a specifier */
735 switch (DCL_TYPE (p))
740 return DCL_ELEM (p) * getSize (p->next);
757 /*------------------------------------------------------------------*/
758 /* bitsForType - returns # of bits required to store this type */
759 /*------------------------------------------------------------------*/
761 bitsForType (sym_link * p)
763 /* if nothing return 0 */
768 { /* if this is the specifier then */
770 switch (SPEC_NOUN (p))
771 { /* depending on the specifier type */
773 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
775 return FLOATSIZE * 8;
781 return SPEC_STRUCT (p)->size * 8;
787 return SPEC_BLEN (p);
793 /* this is a specifier */
794 switch (DCL_TYPE (p))
799 return DCL_ELEM (p) * getSize (p->next) * 8;
803 return (PTRSIZE * 8);
807 return (FPTRSIZE * 8);
809 return (GPTRSIZE * 8);
816 /*------------------------------------------------------------------*/
817 /* copySymbolChain - copies a symbol chain */
818 /*------------------------------------------------------------------*/
820 copySymbolChain (symbol * src)
827 dest = copySymbol (src);
828 dest->next = copySymbolChain (src->next);
832 /*------------------------------------------------------------------*/
833 /* copySymbol - makes a copy of a symbol */
834 /*------------------------------------------------------------------*/
836 copySymbol (symbol * src)
843 dest = newSymbol (src->name, src->level);
844 memcpy (dest, src, sizeof (symbol));
845 dest->level = src->level;
846 dest->block = src->block;
847 dest->ival = copyIlist (src->ival);
848 dest->type = copyLinkChain (src->type);
849 dest->etype = getSpec (dest->type);
851 dest->args = copyValueChain (src->args);
852 dest->key = src->key;
853 dest->calleeSave = src->calleeSave;
854 dest->allocreq = src->allocreq;
858 /*------------------------------------------------------------------*/
859 /* reverseSyms - reverses the links for a symbol chain */
860 /*------------------------------------------------------------------*/
862 reverseSyms (symbol * sym)
864 symbol *prev, *curr, *next;
879 sym->next = (void *) NULL;
883 /*------------------------------------------------------------------*/
884 /* reverseLink - reverses the links for a type chain */
885 /*------------------------------------------------------------------*/
887 reverseLink (sym_link * type)
889 sym_link *prev, *curr, *next;
904 type->next = (void *) NULL;
908 /*------------------------------------------------------------------*/
909 /* addSymChain - adds a symbol chain to the symboltable */
910 /*------------------------------------------------------------------*/
912 addSymChain (symbol * symHead)
914 symbol *sym = symHead;
918 for (; sym != NULL; sym = sym->next)
922 /* if already exists in the symbol table then check if
923 the previous was an extern definition if yes then
924 then check if the type match, if the types match then
925 delete the current entry and add the new entry */
926 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
927 csym->level == sym->level)
930 /* previous definition extern ? */
931 if (IS_EXTERN (csym->etype))
933 /* do types match ? */
934 if (checkType (csym->type, sym->type) != 1)
936 werror (E_DUPLICATE, csym->name);
938 /* delete current entry */
939 deleteSym (SymbolTab, csym, csym->name);
941 addSym (SymbolTab, sym, sym->name, sym->level, sym->block);
943 else /* not extern */
944 werror (E_DUPLICATE, sym->name);
948 /* check if previously defined */
949 if (csym && csym->level == sym->level)
951 /* if the previous one was declared as extern */
952 /* then check the type with the current one */
953 if (IS_EXTERN (csym->etype))
955 if (checkType (csym->type, sym->type) <= 0)
956 werror (W_EXTERN_MISMATCH, csym->name);
959 addSym (SymbolTab, sym, sym->name, sym->level, sym->block);
964 /*------------------------------------------------------------------*/
965 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
966 /*------------------------------------------------------------------*/
968 funcInChain (sym_link * lnk)
979 /*------------------------------------------------------------------*/
980 /* structElemType - returns the type info of a sturct member */
981 /*------------------------------------------------------------------*/
983 structElemType (sym_link * stype, value * id, value ** argsp)
985 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
986 sym_link *type, *etype;
987 sym_link *petype = getSpec (stype);
992 /* look for the id */
995 if (strcmp (fields->rname, id->name) == 0)
999 *argsp = fields->args;
1001 type = copyLinkChain (fields->type);
1002 etype = getSpec (type);
1003 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1004 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1007 fields = fields->next;
1009 werror (E_NOT_MEMBER, id->name);
1014 /*------------------------------------------------------------------*/
1015 /* getStructElement - returns element of a tructure definition */
1016 /*------------------------------------------------------------------*/
1018 getStructElement (structdef * sdef, symbol * sym)
1022 for (field = sdef->fields; field; field = field->next)
1023 if (strcmp (field->name, sym->name) == 0)
1026 werror (E_NOT_MEMBER, sym->name);
1028 return sdef->fields;
1031 /*------------------------------------------------------------------*/
1032 /* compStructSize - computes the size of a structure */
1033 /*------------------------------------------------------------------*/
1035 compStructSize (int su, structdef * sdef)
1037 int sum = 0, usum = 0;
1041 /* for the identifiers */
1042 loop = sdef->fields;
1045 /* create the internal name for this variable */
1046 sprintf (loop->rname, "_%s", loop->name);
1047 loop->offset = (su == UNION ? sum = 0 : sum);
1048 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1050 /* if this is a bit field */
1053 /* change it to a unsigned bit */
1054 SPEC_NOUN (loop->etype) = V_BIT;
1055 SPEC_USIGN (loop->etype) = 1;
1056 /* check if this fit into the remaining */
1057 /* bits of this byte else align it to the */
1058 /* next byte boundary */
1059 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1060 SPEC_BSTR (loop->etype) = bitOffset;
1061 if ((bitOffset += (loop->bitVar % 8)) == 8)
1064 else /* does not fit */ {
1066 SPEC_BSTR (loop->etype) = bitOffset;
1067 sum += (loop->bitVar / 8);
1068 bitOffset += (loop->bitVar % 8);
1070 /* if this is the last field then pad */
1071 if (!loop->next && bitOffset && bitOffset != 8) {
1078 sum += getSize (loop->type);
1081 /* if function then do the arguments for it */
1082 if (funcInChain (loop->type)) {
1083 processFuncArgs (loop, 1);
1088 /* if this is not a bitfield but the */
1089 /* previous one was and did not take */
1090 /* the whole byte then pad the rest */
1091 if ((loop && !loop->bitVar) && bitOffset) {
1096 /* if union then size = sizeof larget field */
1098 usum = max (usum, sum);
1102 return (su == UNION ? usum : sum);
1105 /*------------------------------------------------------------------*/
1106 /* checkSClass - check the storage class specification */
1107 /*------------------------------------------------------------------*/
1109 checkSClass (symbol * sym)
1111 /* type is literal can happen foe enums change
1113 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1114 SPEC_SCLS (sym->etype) = S_AUTO;
1116 /* if sfr or sbit then must also be */
1117 /* volatile the initial value will be xlated */
1118 /* to an absolute address */
1119 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1120 SPEC_SCLS (sym->etype) == S_SFR)
1122 SPEC_VOLATILE (sym->etype) = 1;
1123 /* if initial value given */
1126 SPEC_ABSA (sym->etype) = 1;
1127 SPEC_ADDR (sym->etype) =
1128 (int) list2int (sym->ival);
1133 /* if absolute address given then it mark it as
1135 if (IS_ABSOLUTE (sym->etype))
1136 SPEC_VOLATILE (sym->etype) = 1;
1138 /* global variables declared const put into code */
1139 if (sym->level == 0 &&
1140 SPEC_SCLS (sym->etype) == S_CONSTANT)
1142 SPEC_SCLS (sym->etype) = S_CODE;
1143 SPEC_CONST (sym->etype) = 1;
1146 /* global variable in code space is a constant */
1147 if (sym->level == 0 &&
1148 SPEC_SCLS (sym->etype) == S_CODE &&
1150 SPEC_CONST (sym->etype) = 1;
1153 /* if bit variable then no storage class can be */
1154 /* specified since bit is already a storage */
1155 if (IS_BITVAR (sym->etype) &&
1156 (SPEC_SCLS (sym->etype) != S_FIXED &&
1157 SPEC_SCLS (sym->etype) != S_SBIT &&
1158 SPEC_SCLS (sym->etype) != S_BIT)
1161 werror (E_BITVAR_STORAGE, sym->name);
1162 SPEC_SCLS (sym->etype) = S_FIXED;
1165 /* extern variables cannot be initialized */
1166 if (IS_EXTERN (sym->etype) && sym->ival)
1168 werror (E_EXTERN_INIT, sym->name);
1172 /* if this is an automatic symbol then */
1173 /* storage class will be ignored and */
1174 /* symbol will be allocated on stack/ */
1175 /* data depending on flag */
1177 (options.stackAuto || reentrant) &&
1178 (SPEC_SCLS (sym->etype) != S_AUTO &&
1179 SPEC_SCLS (sym->etype) != S_FIXED &&
1180 SPEC_SCLS (sym->etype) != S_REGISTER &&
1181 SPEC_SCLS (sym->etype) != S_STACK &&
1182 SPEC_SCLS (sym->etype) != S_XSTACK &&
1183 SPEC_SCLS (sym->etype) != S_CONSTANT))
1185 werror (E_AUTO_ASSUMED, sym->name);
1186 SPEC_SCLS (sym->etype) = S_AUTO;
1189 /* automatic symbols cannot be given */
1190 /* an absolute address ignore it */
1192 SPEC_ABSA (sym->etype) &&
1193 (options.stackAuto || reentrant))
1195 werror (E_AUTO_ABSA, sym->name);
1196 SPEC_ABSA (sym->etype) = 0;
1199 /* arrays & pointers cannot be defined for bits */
1200 /* SBITS or SFRs or BIT */
1201 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1202 (SPEC_NOUN (sym->etype) == V_BIT ||
1203 SPEC_NOUN (sym->etype) == V_SBIT ||
1204 SPEC_SCLS (sym->etype) == S_SFR))
1205 werror (E_BIT_ARRAY, sym->name);
1207 /* if this is a bit|sbit then set length & start */
1208 if (SPEC_NOUN (sym->etype) == V_BIT ||
1209 SPEC_NOUN (sym->etype) == V_SBIT)
1211 SPEC_BLEN (sym->etype) = 1;
1212 SPEC_BSTR (sym->etype) = 0;
1215 /* variables declared in CODE space must have */
1216 /* initializers if not an extern */
1217 if (SPEC_SCLS (sym->etype) == S_CODE &&
1218 sym->ival == NULL &&
1220 port->mem.code_ro &&
1221 !IS_EXTERN (sym->etype) &&
1222 !funcInChain (sym->type))
1223 werror (E_CODE_NO_INIT, sym->name);
1225 /* if parameter or local variable then change */
1226 /* the storage class to reflect where the var will go */
1227 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1228 !IS_STATIC(sym->etype))
1230 if (options.stackAuto || (currFunc && IS_RENT (currFunc->etype)))
1232 SPEC_SCLS (sym->etype) = (options.useXstack ?
1233 S_XSTACK : S_STACK);
1237 /* hack-o-matic! I see no reason why the useXstack option should ever
1238 * control this allcoation, but the code was originally that way, and
1239 * changing it for non-390 ports breaks the compiler badly.
1241 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1242 SPEC_SCLS (sym->etype) = (useXdata ?
1248 /*------------------------------------------------------------------*/
1249 /* changePointer - change pointer to functions */
1250 /*------------------------------------------------------------------*/
1252 changePointer (symbol * sym)
1256 /* go thru the chain of declarations */
1257 /* if we find a pointer to a function */
1258 /* unconditionally change it to a ptr */
1260 for (p = sym->type; p; p = p->next)
1262 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1263 DCL_TYPE (p) = GPOINTER;
1264 if (IS_PTR (p) && IS_FUNC (p->next))
1265 DCL_TYPE (p) = CPOINTER;
1269 /*------------------------------------------------------------------*/
1270 /* checkDecl - does semantic validation of a declaration */
1271 /*------------------------------------------------------------------*/
1273 checkDecl (symbol * sym)
1276 checkSClass (sym); /* check the storage class */
1277 changePointer (sym); /* change pointers if required */
1279 /* if this is an array without any dimension
1280 then update the dimension from the initial value */
1281 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1282 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1287 /*------------------------------------------------------------------*/
1288 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1289 /*------------------------------------------------------------------*/
1291 copyLinkChain (sym_link * p)
1293 sym_link *head, *curr, *loop;
1296 head = loop = (curr ? newLink () : (void *) NULL);
1299 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1300 loop->next = (curr->next ? newLink () : (void *) NULL);
1309 /*------------------------------------------------------------------*/
1310 /* cleanUpBlock - cleansup the symbol table specified for all the */
1311 /* symbols in the given block */
1312 /*------------------------------------------------------------------*/
1314 cleanUpBlock (bucket ** table, int block)
1319 /* go thru the entire table */
1320 for (i = 0; i < 256; i++)
1322 for (chain = table[i]; chain; chain = chain->next)
1324 if (chain->block >= block)
1326 deleteSym (table, chain->sym, chain->name);
1332 /*------------------------------------------------------------------*/
1333 /* cleanUpLevel - cleansup the symbol table specified for all the */
1334 /* symbols in the given level */
1335 /*------------------------------------------------------------------*/
1337 cleanUpLevel (bucket ** table, int level)
1342 /* go thru the entire table */
1343 for (i = 0; i < 256; i++)
1345 for (chain = table[i]; chain; chain = chain->next)
1347 if (chain->level >= level)
1349 deleteSym (table, chain->sym, chain->name);
1355 /*------------------------------------------------------------------*/
1356 /* computeType - computes the resultant type from two types */
1357 /*------------------------------------------------------------------*/
1359 computeType (sym_link * type1, sym_link * type2)
1363 sym_link *etype1 = getSpec (type1);
1364 sym_link *etype2 = getSpec (type2);
1366 /* if one of them is a float then result is a float */
1367 /* here we assume that the types passed are okay */
1368 /* and can be cast to one another */
1369 /* which ever is greater in size */
1370 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1371 rType = newFloatLink ();
1373 /* if only one of them is a bit variable
1374 then the other one prevails */
1375 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1376 rType = copyLinkChain (type2);
1377 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1378 rType = copyLinkChain (type1);
1380 /* if one of them is a pointer then that
1383 rType = copyLinkChain (type1);
1384 else if (IS_PTR (type2))
1385 rType = copyLinkChain (type2);
1386 else if (getSize (type1) > getSize (type2))
1387 rType = copyLinkChain (type1);
1389 rType = copyLinkChain (type2);
1391 reType = getSpec (rType);
1393 /* if either of them unsigned then make this unsigned */
1394 if ((SPEC_USIGN (etype1) || SPEC_USIGN (etype2)) && !IS_FLOAT (reType))
1395 SPEC_USIGN (reType) = 1;
1397 /* if result is a literal then make not so */
1398 if (IS_LITERAL (reType))
1399 SPEC_SCLS (reType) = S_REGISTER;
1404 /*------------------------------------------------------------------*/
1405 /* checkType - will do type check return 1 if match */
1406 /*------------------------------------------------------------------*/
1408 checkType (sym_link * dest, sym_link * src)
1419 /* if dest is a declarator then */
1424 if (DCL_TYPE (src) == DCL_TYPE (dest))
1425 return checkType (dest->next, src->next);
1426 else if (IS_PTR (src) && IS_PTR (dest))
1428 else if (IS_PTR (dest) && IS_ARRAY (src))
1430 else if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1431 return -1 * checkType (dest->next, src);
1435 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1441 /* if one is a specifier and the other is not */
1442 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1443 (IS_SPEC (dest) && !IS_SPEC (src)))
1446 /* if one of them is a void then ok */
1447 if (SPEC_NOUN (dest) == V_VOID &&
1448 SPEC_NOUN (src) != V_VOID)
1451 if (SPEC_NOUN (dest) != V_VOID &&
1452 SPEC_NOUN (src) == V_VOID)
1455 /* if they are both bitfields then if the lengths
1456 and starts don't match */
1457 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1458 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1459 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1462 /* it is a specifier */
1463 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1465 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1466 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1467 getSize (dest) == getSize (src))
1469 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1474 else if (IS_STRUCT (dest))
1476 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1481 if (SPEC_LONG (dest) != SPEC_LONG (src))
1484 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1490 /*------------------------------------------------------------------*/
1491 /* inCalleeSaveList - return 1 if found in calle save list */
1492 /*------------------------------------------------------------------*/
1494 inCalleeSaveList (char *s)
1498 for (i = 0; options.calleeSaves[i]; i++)
1499 if (strcmp (options.calleeSaves[i], s) == 0)
1505 /*-----------------------------------------------------------------*/
1506 /* aggregateArgToPointer: change an agggregate type function */
1507 /* argument to a pointer to that type. */
1508 /*-----------------------------------------------------------------*/
1510 aggregateArgToPointer (value * val)
1512 if (IS_AGGREGATE (val->type))
1514 /* if this is a structure */
1515 /* then we need to add a new link */
1516 if (IS_STRUCT (val->type))
1518 /* first lets add DECLARATOR type */
1519 sym_link *p = val->type;
1521 werror (W_STRUCT_AS_ARG, val->name);
1522 val->type = newLink ();
1523 val->type->next = p;
1526 /* change to a pointer depending on the */
1527 /* storage class specified */
1528 switch (SPEC_SCLS (val->etype))
1531 DCL_TYPE (val->type) = IPOINTER;
1534 DCL_TYPE (val->type) = PPOINTER;
1537 if (TARGET_IS_DS390)
1539 /* The AUTO and REGISTER classes should probably
1540 * also become generic pointers, but I haven't yet
1541 * devised a test case for that.
1543 DCL_TYPE (val->type) = GPOINTER;
1550 DCL_TYPE (val->type) = POINTER;
1553 DCL_TYPE (val->type) = CPOINTER;
1556 DCL_TYPE (val->type) = FPOINTER;
1559 DCL_TYPE (val->type) = EEPPOINTER;
1562 DCL_TYPE (val->type) = GPOINTER;
1565 /* is there is a symbol associated then */
1566 /* change the type of the symbol as well */
1569 val->sym->type = copyLinkChain (val->type);
1570 val->sym->etype = getSpec (val->sym->type);
1574 /*------------------------------------------------------------------*/
1575 /* checkFunction - does all kinds of check on a function */
1576 /*------------------------------------------------------------------*/
1578 checkFunction (symbol * sym)
1581 value *exargs, *acargs;
1584 if (getenv("DEBUG_SANITY")) {
1585 fprintf (stderr, "checkFunction: %s ", sym->name);
1588 /* make sure the type is complete and sane */
1589 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1591 /* if not type then some kind of error */
1595 /* if the function has no type then make it return int */
1596 if (!sym->type->next)
1597 sym->type->next = sym->etype = newIntLink ();
1599 /* function cannot return aggregate */
1600 if (IS_AGGREGATE (sym->type->next))
1602 werror (E_FUNC_AGGR, sym->name);
1606 /* function cannot return bit */
1607 if (IS_BITVAR (sym->type->next))
1609 werror (E_FUNC_BIT, sym->name);
1613 /* check if this function is defined as calleeSaves
1614 then mark it as such */
1615 sym->calleeSave = inCalleeSaveList (sym->name);
1617 /* if interrupt service routine */
1618 /* then it cannot have arguments */
1619 if (sym->args && IS_ISR (sym->etype) && !IS_VOID (sym->args->type))
1621 werror (E_INT_ARGS, sym->name);
1625 if (!(csym = findSym (SymbolTab, sym, sym->name)))
1626 return 1; /* not defined nothing more to check */
1628 /* check if body already present */
1629 if (csym && csym->fbody)
1631 werror (E_FUNC_BODY, sym->name);
1635 /* check the return value type */
1636 if (checkType (csym->type, sym->type) <= 0)
1638 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1639 werror (E_CONTINUE, "previous definition type ");
1640 printTypeChain (csym->type, stderr);
1641 fprintf (stderr, "\n");
1642 werror (E_CONTINUE, "current definition type ");
1643 printTypeChain (sym->type, stderr);
1644 fprintf (stderr, "\n");
1648 if (SPEC_INTRTN (csym->etype) != SPEC_INTRTN (sym->etype))
1650 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1654 if (SPEC_BANK (csym->etype) != SPEC_BANK (sym->etype))
1656 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1660 /* compare expected agrs with actual args */
1661 exargs = csym->args;
1664 /* for all the expected args do */
1667 exargs = exargs->next, acargs = acargs->next, argCnt++)
1670 /* If the actual argument is an array, any prototype
1671 * will have modified it to a pointer. Duplicate that
1674 if (IS_AGGREGATE (acargs->type))
1676 checkValue = copyValue (acargs);
1677 aggregateArgToPointer (checkValue);
1681 checkValue = acargs;
1684 if (checkType (exargs->type, checkValue->type) <= 0)
1686 werror (E_ARG_TYPE, argCnt);
1691 /* if one them ended we have a problem */
1692 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1693 (!exargs && acargs && !IS_VOID (acargs->type)))
1694 werror (E_ARG_COUNT);
1696 /* replace with this defition */
1697 sym->cdef = csym->cdef;
1698 deleteSym (SymbolTab, csym, csym->name);
1699 addSym (SymbolTab, sym, sym->name, sym->level, sym->block);
1700 if (IS_EXTERN (csym->etype) && !
1701 IS_EXTERN (sym->etype))
1703 addSet (&publics, sym);
1708 /*-----------------------------------------------------------------*/
1709 /* processFuncArgs - does some processing with function args */
1710 /*-----------------------------------------------------------------*/
1712 processFuncArgs (symbol * func, int ignoreName)
1717 /* if this function has variable argument list */
1718 /* then make the function a reentrant one */
1720 SPEC_RENT (func->etype) = 1;
1722 /* check if this function is defined as calleeSaves
1723 then mark it as such */
1724 func->calleeSave = inCalleeSaveList (func->name);
1726 val = func->args; /* loop thru all the arguments */
1728 /* if it is void then remove parameters */
1729 if (val && IS_VOID (val->type))
1735 /* reset regparm for the port */
1736 (*port->reset_regparms) ();
1737 /* if any of the arguments is an aggregate */
1738 /* change it to pointer to the same type */
1741 /* mark it as a register parameter if
1742 the function does not have VA_ARG
1743 and as port dictates */
1744 if (!func->hasVargs &&
1745 (*port->reg_parm) (val->type))
1747 SPEC_REGPARM (val->etype) = 1;
1750 if (IS_AGGREGATE (val->type))
1752 aggregateArgToPointer (val);
1758 /* if this is an internal generated function call */
1760 /* ignore --stack-auto for this one, we don't know how it is compiled */
1761 /* simply trust on --int-long-reent or --float-reent */
1762 if (IS_RENT(func->etype)) {
1766 /* if this function is reentrant or */
1767 /* automatics r 2b stacked then nothing */
1768 if (IS_RENT (func->etype) || options.stackAuto)
1777 /* if a symbolname is not given */
1778 /* synthesize a variable name */
1782 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1783 val->sym = newSymbol (val->name, 1);
1784 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1785 val->sym->type = copyLinkChain (val->type);
1786 val->sym->etype = getSpec (val->sym->type);
1787 val->sym->_isparm = 1;
1788 strcpy (val->sym->rname, val->name);
1789 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1790 SPEC_STAT (func->etype);
1791 addSymChain (val->sym);
1794 else /* symbol name given create synth name */
1797 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1798 strcpy (val->sym->rname, val->name);
1799 val->sym->_isparm = 1;
1800 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1801 (options.model != MODEL_SMALL ? xdata : data);
1802 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1803 SPEC_STAT (func->etype);
1809 /*-----------------------------------------------------------------*/
1810 /* isSymbolEqual - compares two symbols return 1 if they match */
1811 /*-----------------------------------------------------------------*/
1813 isSymbolEqual (symbol * dest, symbol * src)
1815 /* if pointers match then equal */
1819 /* if one of them is null then don't match */
1823 /* if both of them have rname match on rname */
1824 if (dest->rname[0] && src->rname[0])
1825 return (!strcmp (dest->rname, src->rname));
1827 /* otherwise match on name */
1828 return (!strcmp (dest->name, src->name));
1831 void PT(sym_link *type)
1833 printTypeChain(type,0);
1835 /*-----------------------------------------------------------------*/
1836 /* printTypeChain - prints the type chain in human readable form */
1837 /*-----------------------------------------------------------------*/
1839 printTypeChain (sym_link * type, FILE * of)
1853 if (DCL_PTR_VOLATILE(type)) {
1854 fprintf (of, "volatile ");
1856 switch (DCL_TYPE (type))
1859 fprintf (of, "function ");
1862 fprintf (of, "_generic * ");
1863 if (DCL_PTR_CONST (type))
1864 fprintf (of, "const ");
1867 fprintf (of, "_code * ");
1868 if (DCL_PTR_CONST (type))
1869 fprintf (of, "const ");
1872 fprintf (of, "_far * ");
1873 if (DCL_PTR_CONST (type))
1874 fprintf (of, "const ");
1877 fprintf (of, "_eeprom * ");
1878 if (DCL_PTR_CONST (type))
1879 fprintf (of, "const ");
1883 fprintf (of, "_near * ");
1884 if (DCL_PTR_CONST (type))
1885 fprintf (of, "const ");
1888 fprintf (of, "_idata *");
1889 if (DCL_PTR_CONST (type))
1890 fprintf (of, "const ");
1893 fprintf (of, "_pdata *");
1894 if (DCL_PTR_CONST (type))
1895 fprintf (of, "const ");
1898 fprintf (of, " _unkown *");
1899 if (DCL_PTR_CONST (type))
1900 fprintf (of, "const ");
1903 fprintf (of, "array of ");
1909 if (SPEC_VOLATILE (type))
1910 fprintf (of, "volatile ");
1911 if (SPEC_USIGN (type))
1912 fprintf (of, "unsigned ");
1913 if (SPEC_CONST (type))
1914 fprintf (of, "const ");
1916 switch (SPEC_NOUN (type))
1920 fprintf (of, "long ");
1921 fprintf (of, "int ");
1925 fprintf (of, "char ");
1929 fprintf (of, "void ");
1933 fprintf (of, "float ");
1937 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
1941 fprintf (of, "sbit ");
1945 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
1949 fprintf (of, "double ");
1953 fprintf (of, "unknown type ");
1963 /*-----------------------------------------------------------------*/
1964 /* cdbTypeInfo - print the type information for debugger */
1965 /*-----------------------------------------------------------------*/
1967 cdbTypeInfo (sym_link * type, FILE * of)
1969 fprintf (of, "{%d}", getSize (type));
1974 switch (DCL_TYPE (type))
1977 fprintf (of, "DF,");
1980 fprintf (of, "DG,");
1983 fprintf (of, "DC,");
1986 fprintf (of, "DX,");
1989 fprintf (of, "DD,");
1992 fprintf (of, "DI,");
1995 fprintf (of, "DP,");
1998 fprintf (of, "DA,");
2001 fprintf (of, "DA%d,", DCL_ELEM (type));
2009 switch (SPEC_NOUN (type))
2031 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2039 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2046 if (SPEC_USIGN (type))
2054 /*-----------------------------------------------------------------*/
2055 /* cdbSymbol - prints a symbol & its type information for debugger */
2056 /*-----------------------------------------------------------------*/
2058 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2070 fprintf (of, "S:"); /* symbol record */
2071 /* if this is not a structure symbol then
2072 we need to figure out the scope information */
2078 if (IS_STATIC (sym->etype))
2079 fprintf (of, "F%s$", moduleName); /* scope is file */
2081 fprintf (of, "G$"); /* scope is global */
2084 /* symbol is local */
2085 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2088 fprintf (of, "S$"); /* scope is structure */
2090 /* print the name, & mangled name */
2091 fprintf (of, "%s$%d$%d(", sym->name,
2092 sym->level, sym->block);
2094 cdbTypeInfo (sym->type, of);
2097 /* print the address space */
2098 map = SPEC_OCLS (sym->etype);
2099 fprintf (of, "%c,%d,%d",
2100 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2102 /* if assigned to registers then output register names */
2103 /* if this is a function then print
2104 if is it an interrupt routine & interrupt number
2105 and the register bank it is using */
2107 fprintf (of, ",%d,%d,%d", SPEC_INTRTN (sym->etype),
2108 SPEC_INTN (sym->etype), SPEC_BANK (sym->etype));
2109 /* alternate location to find this symbol @ : eg registers
2116 /*-----------------------------------------------------------------*/
2117 /* cdbStruct - print a structure for debugger */
2118 /*-----------------------------------------------------------------*/
2120 cdbStruct (structdef * sdef, int block, FILE * of,
2121 int inStruct, char *tag)
2126 /* if block # then must have function scope */
2127 fprintf (of, "F%s$", moduleName);
2128 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2129 for (sym = sdef->fields; sym; sym = sym->next)
2131 fprintf (of, "({%d}", sym->offset);
2132 cdbSymbol (sym, of, TRUE, FALSE);
2140 /*------------------------------------------------------------------*/
2141 /* cdbStructBlock - calls struct printing for a blcks */
2142 /*------------------------------------------------------------------*/
2144 cdbStructBlock (int block, FILE * of)
2147 bucket **table = StructTab;
2151 /* go thru the entire table */
2152 for (i = 0; i < 256; i++)
2154 for (chain = table[i]; chain; chain = chain->next)
2156 if (chain->block >= block)
2158 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2164 /*-----------------------------------------------------------------*/
2165 /* powof2 - returns power of two for the number if number is pow 2 */
2166 /*-----------------------------------------------------------------*/
2168 powof2 (unsigned long num)
2181 if (n1s > 1 || nshifts == 0)
2197 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2198 symbol *__muldiv[3][3][2];
2199 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2200 sym_link *__multypes[3][2];
2201 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2202 symbol *__conv[2][3][2];
2204 sym_link *floatType;
2207 _makeRegParam (symbol * sym)
2211 val = sym->args; /* loop thru all the arguments */
2213 /* reset regparm for the port */
2214 (*port->reset_regparms) ();
2217 SPEC_REGPARM (val->etype) = 1;
2222 /*-----------------------------------------------------------------*/
2223 /* initCSupport - create functions for C support routines */
2224 /*-----------------------------------------------------------------*/
2228 const char *smuldivmod[] =
2232 const char *sbwd[] =
2234 "char", "int", "long"
2241 int bwd, su, muldivmod, tofrom;
2243 floatType = newFloatLink ();
2245 for (bwd = 0; bwd < 3; bwd++)
2262 __multypes[bwd][0] = l;
2263 __multypes[bwd][1] = copyLinkChain (l);
2264 SPEC_USIGN (__multypes[bwd][1]) = 1;
2267 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2268 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2269 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2270 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2271 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2272 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2273 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2274 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2275 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2276 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2278 for (tofrom = 0; tofrom < 2; tofrom++)
2280 for (bwd = 0; bwd < 3; bwd++)
2282 for (su = 0; su < 2; su++)
2286 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2287 __conv[tofrom][bwd][su] = funcOfType (buffer, __multypes[bwd][su], floatType, 1, options.float_rent);
2291 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2292 __conv[tofrom][bwd][su] = funcOfType (buffer, floatType, __multypes[bwd][su], 1, options.float_rent);
2298 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2300 for (bwd = 0; bwd < 3; bwd++)
2302 for (su = 0; su < 2; su++)
2304 sprintf (buffer, "_%s%s%s",
2305 smuldivmod[muldivmod],
2308 __muldiv[muldivmod][bwd][su] = funcOfType (buffer, __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2309 SPEC_NONBANKED (__muldiv[muldivmod][bwd][su]->etype) = 1;
2310 if (bwd < port->muldiv.force_reg_param_below)
2311 _makeRegParam (__muldiv[muldivmod][bwd][su]);