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 (SPEC_SHORT(sl)) 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 (SPEC_SHORT(etype) || 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 (SPEC_SIGNED(etype) || SPEC_USIGN(etype))) {
496 // signed or unsigned for float double or void
497 werror (E_SIGNED_OR_UNSIGNED_INVALID, noun, name);
500 if (!SPEC_NOUN(etype)) {
501 // special case for just "signed" or "unsigned" or "long"
502 if (SPEC_SIGNED(etype) || SPEC_USIGN(etype) || SPEC_LONG(etype)) {
503 SPEC_NOUN(etype)=V_INT;
505 // special case for just "short"
506 if (SPEC_SHORT(etype)) {
507 SPEC_NOUN(etype)=V_CHAR; // or maybe V_INT
512 // if still no noun (e.g. "const a;" or "data b;") assume an int
513 if (!SPEC_NOUN(etype)) {
514 SPEC_NOUN(etype)=V_INT;
517 if (SPEC_SIGNED(etype) && SPEC_USIGN(etype)) {
518 // signed AND unsigned
519 werror (E_SIGNED_AND_UNSIGNED_INVALID, noun, name);
521 if (SPEC_SHORT(etype) && SPEC_LONG(etype)) {
523 werror (E_LONG_AND_SHORT_INVALID, noun, name);
528 /*------------------------------------------------------------------*/
529 /* mergeSpec - merges two specifiers and returns the new one */
530 /*------------------------------------------------------------------*/
532 mergeSpec (sym_link * dest, sym_link * src)
535 if (SPEC_NOUN(src)) {
536 if (!SPEC_NOUN(dest)) {
537 SPEC_NOUN(dest)=SPEC_NOUN(src);
539 /* we shouldn't redeclare the type */
540 if (getenv("DEBUG_SANITY")) {
541 fprintf (stderr, "mergeSpec: ");
542 werror(E_TWO_OR_MORE_DATA_TYPES, yylval.yychar);
547 if (SPEC_SCLS(src)) {
548 /* if destination has no storage class */
549 if (!SPEC_SCLS (dest) || SPEC_SCLS(dest)==S_REGISTER) {
550 SPEC_SCLS (dest) = SPEC_SCLS (src);
552 if (getenv("DEBUG_SANITY")) {
553 fprintf (stderr, "mergeSpec: ");
555 werror(E_TWO_OR_MORE_STORAGE_CLASSES, yylval.yychar);
559 /* copy all the specifications */
561 // we really should do:
563 if (SPEC_what(src)) {
564 if (SPEC_what(dest)) {
565 werror(W_DUPLICATE_SPEC, "what");
567 SPEC_what(dst)=SPEC_what(src);
570 // but there are more important thing right now
572 SPEC_LONG (dest) |= SPEC_LONG (src);
573 SPEC_SHORT (dest) |= SPEC_SHORT (src);
574 SPEC_USIGN (dest) |= SPEC_USIGN (src);
575 SPEC_SIGNED (dest) |= SPEC_SIGNED (src);
576 SPEC_STAT (dest) |= SPEC_STAT (src);
577 SPEC_EXTR (dest) |= SPEC_EXTR (src);
578 SPEC_ABSA (dest) |= SPEC_ABSA (src);
579 SPEC_RENT (dest) |= SPEC_RENT (src);
580 SPEC_INTN (dest) |= SPEC_INTN (src);
581 SPEC_BANK (dest) |= SPEC_BANK (src);
582 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
583 SPEC_CRTCL (dest) |= SPEC_CRTCL (src);
584 SPEC_ADDR (dest) |= SPEC_ADDR (src);
585 SPEC_OCLS (dest) = SPEC_OCLS (src);
586 SPEC_BLEN (dest) |= SPEC_BLEN (src);
587 SPEC_BSTR (dest) |= SPEC_BSTR (src);
588 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
589 SPEC_NONBANKED (dest) |= SPEC_NONBANKED (src);
590 SPEC_NAKED (dest) |= SPEC_NAKED (src);
592 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
593 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
598 /*------------------------------------------------------------------*/
599 /* cloneSpec - copies the entire spec and returns a new spec */
600 /*------------------------------------------------------------------*/
602 cloneSpec (sym_link * src)
606 /* go thru chain till we find the specifier */
607 while (src && src->class != SPECIFIER)
611 memcpy (spec, src, sizeof (sym_link));
615 /*------------------------------------------------------------------*/
616 /* genSymName - generates and returns a name used for anonymous vars */
617 /*------------------------------------------------------------------*/
619 genSymName (int level)
621 static int gCount = 0;
622 static char gname[SDCC_NAME_MAX + 1];
624 sprintf (gname, "__%04d%04d", level, gCount++);
628 /*------------------------------------------------------------------*/
629 /* getSpec - returns the specifier part from a declaration chain */
630 /*------------------------------------------------------------------*/
632 getSpec (sym_link * p)
637 while (p && !(IS_SPEC (p)))
643 /*------------------------------------------------------------------*/
644 /* newCharLink() - creates an char type */
645 /*------------------------------------------------------------------*/
652 p->class = SPECIFIER;
653 SPEC_NOUN (p) = V_CHAR;
658 /*------------------------------------------------------------------*/
659 /* newFloatLink - a new Float type */
660 /*------------------------------------------------------------------*/
667 p->class = SPECIFIER;
668 SPEC_NOUN (p) = V_FLOAT;
673 /*------------------------------------------------------------------*/
674 /* newLongLink() - new long type */
675 /*------------------------------------------------------------------*/
682 p->class = SPECIFIER;
683 SPEC_NOUN (p) = V_INT;
689 /*------------------------------------------------------------------*/
690 /* newIntLink() - creates an int type */
691 /*------------------------------------------------------------------*/
698 p->class = SPECIFIER;
699 SPEC_NOUN (p) = V_INT;
704 /*------------------------------------------------------------------*/
705 /* getSize - returns size of a type chain in bits */
706 /*------------------------------------------------------------------*/
708 getSize (sym_link * p)
710 /* if nothing return 0 */
714 { /* if this is the specifier then */
715 switch (SPEC_NOUN (p))
716 { /* depending on the specifier type */
718 return (IS_LONG (p) ? LONGSIZE : (IS_SHORT (p) ? SHORTSIZE : INTSIZE));
726 return SPEC_STRUCT (p)->size;
732 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
738 /* this is a specifier */
739 switch (DCL_TYPE (p))
744 return DCL_ELEM (p) * getSize (p->next);
761 /*------------------------------------------------------------------*/
762 /* bitsForType - returns # of bits required to store this type */
763 /*------------------------------------------------------------------*/
765 bitsForType (sym_link * p)
767 /* if nothing return 0 */
772 { /* if this is the specifier then */
774 switch (SPEC_NOUN (p))
775 { /* depending on the specifier type */
777 return (IS_LONG (p) ? LONGSIZE * 8 : (IS_SHORT (p) ? SHORTSIZE * 8 : INTSIZE * 8));
779 return FLOATSIZE * 8;
785 return SPEC_STRUCT (p)->size * 8;
791 return SPEC_BLEN (p);
797 /* this is a specifier */
798 switch (DCL_TYPE (p))
803 return DCL_ELEM (p) * getSize (p->next) * 8;
807 return (PTRSIZE * 8);
811 return (FPTRSIZE * 8);
813 return (GPTRSIZE * 8);
820 /*------------------------------------------------------------------*/
821 /* copySymbolChain - copies a symbol chain */
822 /*------------------------------------------------------------------*/
824 copySymbolChain (symbol * src)
831 dest = copySymbol (src);
832 dest->next = copySymbolChain (src->next);
836 /*------------------------------------------------------------------*/
837 /* copySymbol - makes a copy of a symbol */
838 /*------------------------------------------------------------------*/
840 copySymbol (symbol * src)
847 dest = newSymbol (src->name, src->level);
848 memcpy (dest, src, sizeof (symbol));
849 dest->level = src->level;
850 dest->block = src->block;
851 dest->ival = copyIlist (src->ival);
852 dest->type = copyLinkChain (src->type);
853 dest->etype = getSpec (dest->type);
855 dest->args = copyValueChain (src->args);
856 dest->key = src->key;
857 dest->calleeSave = src->calleeSave;
858 dest->allocreq = src->allocreq;
862 /*------------------------------------------------------------------*/
863 /* reverseSyms - reverses the links for a symbol chain */
864 /*------------------------------------------------------------------*/
866 reverseSyms (symbol * sym)
868 symbol *prev, *curr, *next;
883 sym->next = (void *) NULL;
887 /*------------------------------------------------------------------*/
888 /* reverseLink - reverses the links for a type chain */
889 /*------------------------------------------------------------------*/
891 reverseLink (sym_link * type)
893 sym_link *prev, *curr, *next;
908 type->next = (void *) NULL;
912 /*------------------------------------------------------------------*/
913 /* addSymChain - adds a symbol chain to the symboltable */
914 /*------------------------------------------------------------------*/
916 addSymChain (symbol * symHead)
918 symbol *sym = symHead;
922 for (; sym != NULL; sym = sym->next)
926 /* if already exists in the symbol table then check if
927 the previous was an extern definition if yes then
928 then check if the type match, if the types match then
929 delete the current entry and add the new entry */
930 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
931 csym->level == sym->level)
934 /* previous definition extern ? */
935 if (IS_EXTERN (csym->etype))
937 /* do types match ? */
938 if (checkType (csym->type, sym->type) != 1)
940 werror (E_DUPLICATE, csym->name);
942 /* delete current entry */
943 deleteSym (SymbolTab, csym, csym->name);
945 addSym (SymbolTab, sym, sym->name, sym->level, sym->block);
947 else /* not extern */
948 werror (E_DUPLICATE, sym->name);
952 /* check if previously defined */
953 if (csym && csym->level == sym->level)
955 /* if the previous one was declared as extern */
956 /* then check the type with the current one */
957 if (IS_EXTERN (csym->etype))
959 if (checkType (csym->type, sym->type) <= 0)
960 werror (W_EXTERN_MISMATCH, csym->name);
963 addSym (SymbolTab, sym, sym->name, sym->level, sym->block);
968 /*------------------------------------------------------------------*/
969 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
970 /*------------------------------------------------------------------*/
972 funcInChain (sym_link * lnk)
983 /*------------------------------------------------------------------*/
984 /* structElemType - returns the type info of a sturct member */
985 /*------------------------------------------------------------------*/
987 structElemType (sym_link * stype, value * id, value ** argsp)
989 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
990 sym_link *type, *etype;
991 sym_link *petype = getSpec (stype);
996 /* look for the id */
999 if (strcmp (fields->rname, id->name) == 0)
1003 *argsp = fields->args;
1005 type = copyLinkChain (fields->type);
1006 etype = getSpec (type);
1007 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1008 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1011 fields = fields->next;
1013 werror (E_NOT_MEMBER, id->name);
1018 /*------------------------------------------------------------------*/
1019 /* getStructElement - returns element of a tructure definition */
1020 /*------------------------------------------------------------------*/
1022 getStructElement (structdef * sdef, symbol * sym)
1026 for (field = sdef->fields; field; field = field->next)
1027 if (strcmp (field->name, sym->name) == 0)
1030 werror (E_NOT_MEMBER, sym->name);
1032 return sdef->fields;
1035 /*------------------------------------------------------------------*/
1036 /* compStructSize - computes the size of a structure */
1037 /*------------------------------------------------------------------*/
1039 compStructSize (int su, structdef * sdef)
1041 int sum = 0, usum = 0;
1045 /* for the identifiers */
1046 loop = sdef->fields;
1049 /* create the internal name for this variable */
1050 sprintf (loop->rname, "_%s", loop->name);
1051 loop->offset = (su == UNION ? sum = 0 : sum);
1052 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1054 /* if this is a bit field */
1057 /* change it to a unsigned bit */
1058 SPEC_NOUN (loop->etype) = V_BIT;
1059 SPEC_USIGN (loop->etype) = 1;
1060 /* check if this fit into the remaining */
1061 /* bits of this byte else align it to the */
1062 /* next byte boundary */
1063 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1064 SPEC_BSTR (loop->etype) = bitOffset;
1065 if ((bitOffset += (loop->bitVar % 8)) == 8)
1068 else /* does not fit */ {
1070 SPEC_BSTR (loop->etype) = bitOffset;
1071 sum += (loop->bitVar / 8);
1072 bitOffset += (loop->bitVar % 8);
1074 /* if this is the last field then pad */
1075 if (!loop->next && bitOffset && bitOffset != 8) {
1082 sum += getSize (loop->type);
1085 /* if function then do the arguments for it */
1086 if (funcInChain (loop->type)) {
1087 processFuncArgs (loop, 1);
1092 /* if this is not a bitfield but the */
1093 /* previous one was and did not take */
1094 /* the whole byte then pad the rest */
1095 if ((loop && !loop->bitVar) && bitOffset) {
1100 /* if union then size = sizeof larget field */
1102 usum = max (usum, sum);
1106 return (su == UNION ? usum : sum);
1109 /*------------------------------------------------------------------*/
1110 /* checkSClass - check the storage class specification */
1111 /*------------------------------------------------------------------*/
1113 checkSClass (symbol * sym)
1115 /* type is literal can happen foe enums change
1117 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1118 SPEC_SCLS (sym->etype) = S_AUTO;
1120 /* if sfr or sbit then must also be */
1121 /* volatile the initial value will be xlated */
1122 /* to an absolute address */
1123 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1124 SPEC_SCLS (sym->etype) == S_SFR)
1126 SPEC_VOLATILE (sym->etype) = 1;
1127 /* if initial value given */
1130 SPEC_ABSA (sym->etype) = 1;
1131 SPEC_ADDR (sym->etype) =
1132 (int) list2int (sym->ival);
1137 /* if absolute address given then it mark it as
1139 if (IS_ABSOLUTE (sym->etype))
1140 SPEC_VOLATILE (sym->etype) = 1;
1142 /* global variables declared const put into code */
1143 if (sym->level == 0 &&
1144 SPEC_SCLS (sym->etype) == S_CONSTANT)
1146 SPEC_SCLS (sym->etype) = S_CODE;
1147 SPEC_CONST (sym->etype) = 1;
1150 /* global variable in code space is a constant */
1151 if (sym->level == 0 &&
1152 SPEC_SCLS (sym->etype) == S_CODE &&
1154 SPEC_CONST (sym->etype) = 1;
1157 /* if bit variable then no storage class can be */
1158 /* specified since bit is already a storage */
1159 if (IS_BITVAR (sym->etype) &&
1160 (SPEC_SCLS (sym->etype) != S_FIXED &&
1161 SPEC_SCLS (sym->etype) != S_SBIT &&
1162 SPEC_SCLS (sym->etype) != S_BIT)
1165 werror (E_BITVAR_STORAGE, sym->name);
1166 SPEC_SCLS (sym->etype) = S_FIXED;
1169 /* extern variables cannot be initialized */
1170 if (IS_EXTERN (sym->etype) && sym->ival)
1172 werror (E_EXTERN_INIT, sym->name);
1176 /* if this is an automatic symbol then */
1177 /* storage class will be ignored and */
1178 /* symbol will be allocated on stack/ */
1179 /* data depending on flag */
1181 (options.stackAuto || reentrant) &&
1182 (SPEC_SCLS (sym->etype) != S_AUTO &&
1183 SPEC_SCLS (sym->etype) != S_FIXED &&
1184 SPEC_SCLS (sym->etype) != S_REGISTER &&
1185 SPEC_SCLS (sym->etype) != S_STACK &&
1186 SPEC_SCLS (sym->etype) != S_XSTACK &&
1187 SPEC_SCLS (sym->etype) != S_CONSTANT))
1189 werror (E_AUTO_ASSUMED, sym->name);
1190 SPEC_SCLS (sym->etype) = S_AUTO;
1193 /* automatic symbols cannot be given */
1194 /* an absolute address ignore it */
1196 SPEC_ABSA (sym->etype) &&
1197 (options.stackAuto || reentrant))
1199 werror (E_AUTO_ABSA, sym->name);
1200 SPEC_ABSA (sym->etype) = 0;
1203 /* arrays & pointers cannot be defined for bits */
1204 /* SBITS or SFRs or BIT */
1205 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1206 (SPEC_NOUN (sym->etype) == V_BIT ||
1207 SPEC_NOUN (sym->etype) == V_SBIT ||
1208 SPEC_SCLS (sym->etype) == S_SFR))
1209 werror (E_BIT_ARRAY, sym->name);
1211 /* if this is a bit|sbit then set length & start */
1212 if (SPEC_NOUN (sym->etype) == V_BIT ||
1213 SPEC_NOUN (sym->etype) == V_SBIT)
1215 SPEC_BLEN (sym->etype) = 1;
1216 SPEC_BSTR (sym->etype) = 0;
1219 /* variables declared in CODE space must have */
1220 /* initializers if not an extern */
1221 if (SPEC_SCLS (sym->etype) == S_CODE &&
1222 sym->ival == NULL &&
1224 port->mem.code_ro &&
1225 !IS_EXTERN (sym->etype) &&
1226 !funcInChain (sym->type))
1227 werror (E_CODE_NO_INIT, sym->name);
1229 /* if parameter or local variable then change */
1230 /* the storage class to reflect where the var will go */
1231 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1232 !IS_STATIC(sym->etype))
1234 if (options.stackAuto || (currFunc && IS_RENT (currFunc->etype)))
1236 SPEC_SCLS (sym->etype) = (options.useXstack ?
1237 S_XSTACK : S_STACK);
1241 /* hack-o-matic! I see no reason why the useXstack option should ever
1242 * control this allcoation, but the code was originally that way, and
1243 * changing it for non-390 ports breaks the compiler badly.
1245 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1246 SPEC_SCLS (sym->etype) = (useXdata ?
1252 /*------------------------------------------------------------------*/
1253 /* changePointer - change pointer to functions */
1254 /*------------------------------------------------------------------*/
1256 changePointer (symbol * sym)
1260 /* go thru the chain of declarations */
1261 /* if we find a pointer to a function */
1262 /* unconditionally change it to a ptr */
1264 for (p = sym->type; p; p = p->next)
1266 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1267 DCL_TYPE (p) = GPOINTER;
1268 if (IS_PTR (p) && IS_FUNC (p->next))
1269 DCL_TYPE (p) = CPOINTER;
1273 /*------------------------------------------------------------------*/
1274 /* checkDecl - does semantic validation of a declaration */
1275 /*------------------------------------------------------------------*/
1277 checkDecl (symbol * sym)
1280 checkSClass (sym); /* check the storage class */
1281 changePointer (sym); /* change pointers if required */
1283 /* if this is an array without any dimension
1284 then update the dimension from the initial value */
1285 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1286 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1291 /*------------------------------------------------------------------*/
1292 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1293 /*------------------------------------------------------------------*/
1295 copyLinkChain (sym_link * p)
1297 sym_link *head, *curr, *loop;
1300 head = loop = (curr ? newLink () : (void *) NULL);
1303 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1304 loop->next = (curr->next ? newLink () : (void *) NULL);
1313 /*------------------------------------------------------------------*/
1314 /* cleanUpBlock - cleansup the symbol table specified for all the */
1315 /* symbols in the given block */
1316 /*------------------------------------------------------------------*/
1318 cleanUpBlock (bucket ** table, int block)
1323 /* go thru the entire table */
1324 for (i = 0; i < 256; i++)
1326 for (chain = table[i]; chain; chain = chain->next)
1328 if (chain->block >= block)
1330 deleteSym (table, chain->sym, chain->name);
1336 /*------------------------------------------------------------------*/
1337 /* cleanUpLevel - cleansup the symbol table specified for all the */
1338 /* symbols in the given level */
1339 /*------------------------------------------------------------------*/
1341 cleanUpLevel (bucket ** table, int level)
1346 /* go thru the entire table */
1347 for (i = 0; i < 256; i++)
1349 for (chain = table[i]; chain; chain = chain->next)
1351 if (chain->level >= level)
1353 deleteSym (table, chain->sym, chain->name);
1359 /*------------------------------------------------------------------*/
1360 /* computeType - computes the resultant type from two types */
1361 /*------------------------------------------------------------------*/
1363 computeType (sym_link * type1, sym_link * type2)
1367 sym_link *etype1 = getSpec (type1);
1368 sym_link *etype2 = getSpec (type2);
1370 /* if one of them is a float then result is a float */
1371 /* here we assume that the types passed are okay */
1372 /* and can be cast to one another */
1373 /* which ever is greater in size */
1374 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1375 rType = newFloatLink ();
1377 /* if only one of them is a bit variable
1378 then the other one prevails */
1379 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1380 rType = copyLinkChain (type2);
1381 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1382 rType = copyLinkChain (type1);
1384 /* if one of them is a pointer then that
1387 rType = copyLinkChain (type1);
1388 else if (IS_PTR (type2))
1389 rType = copyLinkChain (type2);
1390 else if (getSize (type1) > getSize (type2))
1391 rType = copyLinkChain (type1);
1393 rType = copyLinkChain (type2);
1395 reType = getSpec (rType);
1397 /* if either of them unsigned then make this unsigned */
1398 if ((SPEC_USIGN (etype1) || SPEC_USIGN (etype2)) && !IS_FLOAT (reType))
1399 SPEC_USIGN (reType) = 1;
1401 /* if result is a literal then make not so */
1402 if (IS_LITERAL (reType))
1403 SPEC_SCLS (reType) = S_REGISTER;
1408 /*------------------------------------------------------------------*/
1409 /* checkType - will do type check return 1 if match */
1410 /*------------------------------------------------------------------*/
1412 checkType (sym_link * dest, sym_link * src)
1423 /* if dest is a declarator then */
1428 if (DCL_TYPE (src) == DCL_TYPE (dest))
1429 return checkType (dest->next, src->next);
1430 else if (IS_PTR (src) && IS_PTR (dest))
1432 else if (IS_PTR (dest) && IS_ARRAY (src))
1434 else if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1435 return -1 * checkType (dest->next, src);
1439 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1445 /* if one is a specifier and the other is not */
1446 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1447 (IS_SPEC (dest) && !IS_SPEC (src)))
1450 /* if one of them is a void then ok */
1451 if (SPEC_NOUN (dest) == V_VOID &&
1452 SPEC_NOUN (src) != V_VOID)
1455 if (SPEC_NOUN (dest) != V_VOID &&
1456 SPEC_NOUN (src) == V_VOID)
1459 /* char === to short */
1460 if (SPEC_NOUN (dest) == V_CHAR &&
1461 SPEC_NOUN (src) == V_INT &&
1463 return (SPEC_USIGN (src) == SPEC_USIGN (dest) ? 1 : -2);
1465 if (SPEC_NOUN (src) == V_CHAR &&
1466 SPEC_NOUN (dest) == V_INT &&
1468 return (SPEC_USIGN (src) == SPEC_USIGN (dest) ? 1 : -2);
1470 /* if they are both bitfields then if the lengths
1471 and starts don't match */
1472 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1473 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1474 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1477 /* it is a specifier */
1478 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1480 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1481 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1482 getSize (dest) == getSize (src))
1484 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1489 else if (IS_STRUCT (dest))
1491 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1496 if (SPEC_LONG (dest) != SPEC_LONG (src))
1499 if (SPEC_SHORT (dest) != SPEC_SHORT (src))
1502 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1508 /*------------------------------------------------------------------*/
1509 /* inCalleeSaveList - return 1 if found in calle save list */
1510 /*------------------------------------------------------------------*/
1512 inCalleeSaveList (char *s)
1516 for (i = 0; options.calleeSaves[i]; i++)
1517 if (strcmp (options.calleeSaves[i], s) == 0)
1523 /*-----------------------------------------------------------------*/
1524 /* aggregateArgToPointer: change an agggregate type function */
1525 /* argument to a pointer to that type. */
1526 /*-----------------------------------------------------------------*/
1528 aggregateArgToPointer (value * val)
1530 if (IS_AGGREGATE (val->type))
1532 /* if this is a structure */
1533 /* then we need to add a new link */
1534 if (IS_STRUCT (val->type))
1536 /* first lets add DECLARATOR type */
1537 sym_link *p = val->type;
1539 werror (W_STRUCT_AS_ARG, val->name);
1540 val->type = newLink ();
1541 val->type->next = p;
1544 /* change to a pointer depending on the */
1545 /* storage class specified */
1546 switch (SPEC_SCLS (val->etype))
1549 DCL_TYPE (val->type) = IPOINTER;
1552 DCL_TYPE (val->type) = PPOINTER;
1555 if (TARGET_IS_DS390)
1557 /* The AUTO and REGISTER classes should probably
1558 * also become generic pointers, but I haven't yet
1559 * devised a test case for that.
1561 DCL_TYPE (val->type) = GPOINTER;
1568 DCL_TYPE (val->type) = POINTER;
1571 DCL_TYPE (val->type) = CPOINTER;
1574 DCL_TYPE (val->type) = FPOINTER;
1577 DCL_TYPE (val->type) = EEPPOINTER;
1580 DCL_TYPE (val->type) = GPOINTER;
1583 /* is there is a symbol associated then */
1584 /* change the type of the symbol as well */
1587 val->sym->type = copyLinkChain (val->type);
1588 val->sym->etype = getSpec (val->sym->type);
1592 /*------------------------------------------------------------------*/
1593 /* checkFunction - does all kinds of check on a function */
1594 /*------------------------------------------------------------------*/
1596 checkFunction (symbol * sym)
1599 value *exargs, *acargs;
1602 if (getenv("DEBUG_SANITY")) {
1603 fprintf (stderr, "checkFunction: %s ", sym->name);
1606 /* make sure the type is complete and sane */
1607 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1609 /* if not type then some kind of error */
1613 /* if the function has no type then make it return int */
1614 if (!sym->type->next)
1615 sym->type->next = sym->etype = newIntLink ();
1617 /* function cannot return aggregate */
1618 if (IS_AGGREGATE (sym->type->next))
1620 werror (E_FUNC_AGGR, sym->name);
1624 /* function cannot return bit */
1625 if (IS_BITVAR (sym->type->next))
1627 werror (E_FUNC_BIT, sym->name);
1631 /* check if this function is defined as calleeSaves
1632 then mark it as such */
1633 sym->calleeSave = inCalleeSaveList (sym->name);
1635 /* if interrupt service routine */
1636 /* then it cannot have arguments */
1637 if (sym->args && IS_ISR (sym->etype) && !IS_VOID (sym->args->type))
1639 werror (E_INT_ARGS, sym->name);
1643 if (!(csym = findSym (SymbolTab, sym, sym->name)))
1644 return 1; /* not defined nothing more to check */
1646 /* check if body already present */
1647 if (csym && csym->fbody)
1649 werror (E_FUNC_BODY, sym->name);
1653 /* check the return value type */
1654 if (checkType (csym->type, sym->type) <= 0)
1656 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1657 werror (E_CONTINUE, "previous definition type ");
1658 printTypeChain (csym->type, stderr);
1659 fprintf (stderr, "\n");
1660 werror (E_CONTINUE, "current definition type ");
1661 printTypeChain (sym->type, stderr);
1662 fprintf (stderr, "\n");
1666 if (SPEC_INTRTN (csym->etype) != SPEC_INTRTN (sym->etype))
1668 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1672 if (SPEC_BANK (csym->etype) != SPEC_BANK (sym->etype))
1674 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1678 /* compare expected agrs with actual args */
1679 exargs = csym->args;
1682 /* for all the expected args do */
1685 exargs = exargs->next, acargs = acargs->next, argCnt++)
1688 /* If the actual argument is an array, any prototype
1689 * will have modified it to a pointer. Duplicate that
1692 if (IS_AGGREGATE (acargs->type))
1694 checkValue = copyValue (acargs);
1695 aggregateArgToPointer (checkValue);
1699 checkValue = acargs;
1702 if (checkType (exargs->type, checkValue->type) <= 0)
1704 werror (E_ARG_TYPE, argCnt);
1709 /* if one them ended we have a problem */
1710 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1711 (!exargs && acargs && !IS_VOID (acargs->type)))
1712 werror (E_ARG_COUNT);
1714 /* replace with this defition */
1715 sym->cdef = csym->cdef;
1716 deleteSym (SymbolTab, csym, csym->name);
1717 addSym (SymbolTab, sym, sym->name, sym->level, sym->block);
1718 if (IS_EXTERN (csym->etype) && !
1719 IS_EXTERN (sym->etype))
1721 addSet (&publics, sym);
1726 /*-----------------------------------------------------------------*/
1727 /* processFuncArgs - does some processing with function args */
1728 /*-----------------------------------------------------------------*/
1730 processFuncArgs (symbol * func, int ignoreName)
1735 /* if this function has variable argument list */
1736 /* then make the function a reentrant one */
1738 SPEC_RENT (func->etype) = 1;
1740 /* check if this function is defined as calleeSaves
1741 then mark it as such */
1742 func->calleeSave = inCalleeSaveList (func->name);
1744 val = func->args; /* loop thru all the arguments */
1746 /* if it is void then remove parameters */
1747 if (val && IS_VOID (val->type))
1753 /* reset regparm for the port */
1754 (*port->reset_regparms) ();
1755 /* if any of the arguments is an aggregate */
1756 /* change it to pointer to the same type */
1759 /* mark it as a register parameter if
1760 the function does not have VA_ARG
1761 and as port dictates */
1762 if (!func->hasVargs &&
1763 (*port->reg_parm) (val->type))
1765 SPEC_REGPARM (val->etype) = 1;
1768 if (IS_AGGREGATE (val->type))
1770 aggregateArgToPointer (val);
1776 /* if this is an internal generated function call */
1778 /* ignore --stack-auto for this one, we don't know how it is compiled */
1779 /* simply trust on --int-long-reent or --float-reent */
1780 if (IS_RENT(func->etype)) {
1784 /* if this function is reentrant or */
1785 /* automatics r 2b stacked then nothing */
1786 if (IS_RENT (func->etype) || options.stackAuto)
1795 /* if a symbolname is not given */
1796 /* synthesize a variable name */
1800 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1801 val->sym = newSymbol (val->name, 1);
1802 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1803 val->sym->type = copyLinkChain (val->type);
1804 val->sym->etype = getSpec (val->sym->type);
1805 val->sym->_isparm = 1;
1806 strcpy (val->sym->rname, val->name);
1807 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1808 SPEC_STAT (func->etype);
1809 addSymChain (val->sym);
1812 else /* symbol name given create synth name */
1815 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1816 strcpy (val->sym->rname, val->name);
1817 val->sym->_isparm = 1;
1818 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1819 (options.model != MODEL_SMALL ? xdata : data);
1820 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1821 SPEC_STAT (func->etype);
1827 /*-----------------------------------------------------------------*/
1828 /* isSymbolEqual - compares two symbols return 1 if they match */
1829 /*-----------------------------------------------------------------*/
1831 isSymbolEqual (symbol * dest, symbol * src)
1833 /* if pointers match then equal */
1837 /* if one of them is null then don't match */
1841 /* if both of them have rname match on rname */
1842 if (dest->rname[0] && src->rname[0])
1843 return (!strcmp (dest->rname, src->rname));
1845 /* otherwise match on name */
1846 return (!strcmp (dest->name, src->name));
1849 void PT(sym_link *type)
1851 printTypeChain(type,0);
1853 /*-----------------------------------------------------------------*/
1854 /* printTypeChain - prints the type chain in human readable form */
1855 /*-----------------------------------------------------------------*/
1857 printTypeChain (sym_link * type, FILE * of)
1871 if (DCL_PTR_VOLATILE(type)) {
1872 fprintf (of, "volatile ");
1874 switch (DCL_TYPE (type))
1877 fprintf (of, "function ");
1880 fprintf (of, "_generic * ");
1881 if (DCL_PTR_CONST (type))
1882 fprintf (of, "const ");
1885 fprintf (of, "_code * ");
1886 if (DCL_PTR_CONST (type))
1887 fprintf (of, "const ");
1890 fprintf (of, "_far * ");
1891 if (DCL_PTR_CONST (type))
1892 fprintf (of, "const ");
1895 fprintf (of, "_eeprom * ");
1896 if (DCL_PTR_CONST (type))
1897 fprintf (of, "const ");
1901 fprintf (of, "_near * ");
1902 if (DCL_PTR_CONST (type))
1903 fprintf (of, "const ");
1906 fprintf (of, "_idata *");
1907 if (DCL_PTR_CONST (type))
1908 fprintf (of, "const ");
1911 fprintf (of, "_pdata *");
1912 if (DCL_PTR_CONST (type))
1913 fprintf (of, "const ");
1916 fprintf (of, " _unkown *");
1917 if (DCL_PTR_CONST (type))
1918 fprintf (of, "const ");
1921 fprintf (of, "array of ");
1927 if (SPEC_VOLATILE (type))
1928 fprintf (of, "volatile ");
1929 if (SPEC_USIGN (type))
1930 fprintf (of, "unsigned ");
1931 if (SPEC_CONST (type))
1932 fprintf (of, "const ");
1934 switch (SPEC_NOUN (type))
1938 fprintf (of, "long ");
1939 if (IS_SHORT (type))
1940 fprintf (of, "short ");
1941 fprintf (of, "int ");
1945 fprintf (of, "char ");
1949 fprintf (of, "void ");
1953 fprintf (of, "float ");
1957 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
1961 fprintf (of, "sbit ");
1965 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
1969 fprintf (of, "double ");
1973 fprintf (of, "unknown type ");
1983 /*-----------------------------------------------------------------*/
1984 /* cdbTypeInfo - print the type information for debugger */
1985 /*-----------------------------------------------------------------*/
1987 cdbTypeInfo (sym_link * type, FILE * of)
1989 fprintf (of, "{%d}", getSize (type));
1994 switch (DCL_TYPE (type))
1997 fprintf (of, "DF,");
2000 fprintf (of, "DG,");
2003 fprintf (of, "DC,");
2006 fprintf (of, "DX,");
2009 fprintf (of, "DD,");
2012 fprintf (of, "DI,");
2015 fprintf (of, "DP,");
2018 fprintf (of, "DA,");
2021 fprintf (of, "DA%d,", DCL_ELEM (type));
2029 switch (SPEC_NOUN (type))
2034 else if (IS_SHORT (type))
2053 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2061 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2068 if (SPEC_USIGN (type))
2076 /*-----------------------------------------------------------------*/
2077 /* cdbSymbol - prints a symbol & its type information for debugger */
2078 /*-----------------------------------------------------------------*/
2080 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2092 fprintf (of, "S:"); /* symbol record */
2093 /* if this is not a structure symbol then
2094 we need to figure out the scope information */
2100 if (IS_STATIC (sym->etype))
2101 fprintf (of, "F%s$", moduleName); /* scope is file */
2103 fprintf (of, "G$"); /* scope is global */
2106 /* symbol is local */
2107 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2110 fprintf (of, "S$"); /* scope is structure */
2112 /* print the name, & mangled name */
2113 fprintf (of, "%s$%d$%d(", sym->name,
2114 sym->level, sym->block);
2116 cdbTypeInfo (sym->type, of);
2119 /* print the address space */
2120 map = SPEC_OCLS (sym->etype);
2121 fprintf (of, "%c,%d,%d",
2122 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2124 /* if assigned to registers then output register names */
2125 /* if this is a function then print
2126 if is it an interrupt routine & interrupt number
2127 and the register bank it is using */
2129 fprintf (of, ",%d,%d,%d", SPEC_INTRTN (sym->etype),
2130 SPEC_INTN (sym->etype), SPEC_BANK (sym->etype));
2131 /* alternate location to find this symbol @ : eg registers
2138 /*-----------------------------------------------------------------*/
2139 /* cdbStruct - print a structure for debugger */
2140 /*-----------------------------------------------------------------*/
2142 cdbStruct (structdef * sdef, int block, FILE * of,
2143 int inStruct, char *tag)
2148 /* if block # then must have function scope */
2149 fprintf (of, "F%s$", moduleName);
2150 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2151 for (sym = sdef->fields; sym; sym = sym->next)
2153 fprintf (of, "({%d}", sym->offset);
2154 cdbSymbol (sym, of, TRUE, FALSE);
2162 /*------------------------------------------------------------------*/
2163 /* cdbStructBlock - calls struct printing for a blcks */
2164 /*------------------------------------------------------------------*/
2166 cdbStructBlock (int block, FILE * of)
2169 bucket **table = StructTab;
2173 /* go thru the entire table */
2174 for (i = 0; i < 256; i++)
2176 for (chain = table[i]; chain; chain = chain->next)
2178 if (chain->block >= block)
2180 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2186 /*-----------------------------------------------------------------*/
2187 /* powof2 - returns power of two for the number if number is pow 2 */
2188 /*-----------------------------------------------------------------*/
2190 powof2 (unsigned long num)
2203 if (n1s > 1 || nshifts == 0)
2219 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2220 symbol *__muldiv[3][3][2];
2221 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2222 sym_link *__multypes[3][2];
2223 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2224 symbol *__conv[2][3][2];
2226 sym_link *floatType;
2229 _makeRegParam (symbol * sym)
2233 val = sym->args; /* loop thru all the arguments */
2235 /* reset regparm for the port */
2236 (*port->reset_regparms) ();
2239 SPEC_REGPARM (val->etype) = 1;
2244 /*-----------------------------------------------------------------*/
2245 /* initCSupport - create functions for C support routines */
2246 /*-----------------------------------------------------------------*/
2250 const char *smuldivmod[] =
2254 const char *sbwd[] =
2256 "char", "int", "long"
2263 int bwd, su, muldivmod, tofrom;
2265 floatType = newFloatLink ();
2267 for (bwd = 0; bwd < 3; bwd++)
2284 __multypes[bwd][0] = l;
2285 __multypes[bwd][1] = copyLinkChain (l);
2286 SPEC_USIGN (__multypes[bwd][1]) = 1;
2289 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2290 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2291 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2292 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2293 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2294 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2295 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2296 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2297 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2298 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2300 for (tofrom = 0; tofrom < 2; tofrom++)
2302 for (bwd = 0; bwd < 3; bwd++)
2304 for (su = 0; su < 2; su++)
2308 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2309 __conv[tofrom][bwd][su] = funcOfType (buffer, __multypes[bwd][su], floatType, 1, options.float_rent);
2313 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2314 __conv[tofrom][bwd][su] = funcOfType (buffer, floatType, __multypes[bwd][su], 1, options.float_rent);
2320 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2322 for (bwd = 0; bwd < 3; bwd++)
2324 for (su = 0; su < 2; su++)
2326 sprintf (buffer, "_%s%s%s",
2327 smuldivmod[muldivmod],
2330 __muldiv[muldivmod][bwd][su] = funcOfType (buffer, __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2331 SPEC_NONBANKED (__muldiv[muldivmod][bwd][su]->etype) = 1;
2332 if (bwd < port->muldiv.force_reg_param_below)
2333 _makeRegParam (__muldiv[muldivmod][bwd][su]);