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,
104 int i; /* index into the hash Table */
105 bucket *bp; /* temp bucket * */
108 if (getenv("DEBUG_SANITY")) {
109 fprintf (stderr, "addSym: %s ", sname);
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, sym->name);
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 %x\n", name, (int)etype);
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.shortis8bits ? V_CHAR : V_INT;
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, char *name)
531 if (getenv("DEBUG_mergeSpec")) {
532 fprintf (stderr, "mergeSpec: \"%s\"\n", name);
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: ");
543 werror(E_TWO_OR_MORE_DATA_TYPES, name);
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, name);
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 dest->select.s._short|=src->select.s._short;
574 SPEC_USIGN (dest) |= SPEC_USIGN (src);
575 dest->select.s._signed|=src->select.s._signed;
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 : 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 : 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 (compareType (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, 1);
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 (compareType (csym->type, sym->type) <= 0)
960 werror (W_EXTERN_MISMATCH, csym->name);
963 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
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 if (getenv("DEBUG_SANITY")) {
1116 fprintf (stderr, "checkSClass: %s \n", sym->name);
1118 if (strcmp(sym->name, "_testsGlobal")==0) {
1122 /* type is literal can happen foe enums change
1124 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1125 SPEC_SCLS (sym->etype) = S_AUTO;
1127 /* if sfr or sbit then must also be */
1128 /* volatile the initial value will be xlated */
1129 /* to an absolute address */
1130 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1131 SPEC_SCLS (sym->etype) == S_SFR)
1133 SPEC_VOLATILE (sym->etype) = 1;
1134 /* if initial value given */
1137 SPEC_ABSA (sym->etype) = 1;
1138 SPEC_ADDR (sym->etype) =
1139 (int) list2int (sym->ival);
1144 /* if absolute address given then it mark it as
1146 if (IS_ABSOLUTE (sym->etype))
1147 SPEC_VOLATILE (sym->etype) = 1;
1149 /* global variables declared const put into code */
1150 if (sym->level == 0 &&
1151 SPEC_CONST (sym->etype)) {
1152 SPEC_SCLS (sym->etype) = S_CODE;
1155 /* global variable in code space is a constant */
1156 if (sym->level == 0 &&
1157 SPEC_SCLS (sym->etype) == S_CODE &&
1159 SPEC_CONST (sym->etype) = 1;
1162 /* if bit variable then no storage class can be */
1163 /* specified since bit is already a storage */
1164 if (IS_BITVAR (sym->etype) &&
1165 (SPEC_SCLS (sym->etype) != S_FIXED &&
1166 SPEC_SCLS (sym->etype) != S_SBIT &&
1167 SPEC_SCLS (sym->etype) != S_BIT)
1170 werror (E_BITVAR_STORAGE, sym->name);
1171 SPEC_SCLS (sym->etype) = S_FIXED;
1174 /* extern variables cannot be initialized */
1175 if (IS_EXTERN (sym->etype) && sym->ival)
1177 werror (E_EXTERN_INIT, sym->name);
1182 /* if this is an automatic symbol then */
1183 /* storage class will be ignored and */
1184 /* symbol will be allocated on stack/ */
1185 /* data depending on flag */
1187 (options.stackAuto || reentrant) &&
1188 (SPEC_SCLS (sym->etype) != S_AUTO &&
1189 SPEC_SCLS (sym->etype) != S_FIXED &&
1190 SPEC_SCLS (sym->etype) != S_REGISTER &&
1191 SPEC_SCLS (sym->etype) != S_STACK &&
1192 SPEC_SCLS (sym->etype) != S_XSTACK))
1194 werror (E_AUTO_ASSUMED, sym->name);
1195 SPEC_SCLS (sym->etype) = S_AUTO;
1198 /* if this is an atomatic symbol */
1199 if (sym->level && (options.stackAuto || reentrant)) {
1200 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1201 SPEC_SCLS (sym->etype) == S_FIXED ||
1202 SPEC_SCLS (sym->etype) == S_REGISTER ||
1203 SPEC_SCLS (sym->etype) == S_STACK ||
1204 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1205 SPEC_SCLS (sym->etype) = S_AUTO;
1207 /* storage class may only be specified for statics */
1208 if (!IS_STATIC(sym->etype)) {
1209 werror (E_AUTO_ASSUMED, sym->name);
1215 /* automatic symbols cannot be given */
1216 /* an absolute address ignore it */
1218 SPEC_ABSA (sym->etype) &&
1219 (options.stackAuto || reentrant))
1221 werror (E_AUTO_ABSA, sym->name);
1222 SPEC_ABSA (sym->etype) = 0;
1225 /* arrays & pointers cannot be defined for bits */
1226 /* SBITS or SFRs or BIT */
1227 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1228 (SPEC_NOUN (sym->etype) == V_BIT ||
1229 SPEC_NOUN (sym->etype) == V_SBIT ||
1230 SPEC_SCLS (sym->etype) == S_SFR))
1231 werror (E_BIT_ARRAY, sym->name);
1233 /* if this is a bit|sbit then set length & start */
1234 if (SPEC_NOUN (sym->etype) == V_BIT ||
1235 SPEC_NOUN (sym->etype) == V_SBIT)
1237 SPEC_BLEN (sym->etype) = 1;
1238 SPEC_BSTR (sym->etype) = 0;
1241 /* variables declared in CODE space must have */
1242 /* initializers if not an extern */
1243 if (SPEC_SCLS (sym->etype) == S_CODE &&
1244 sym->ival == NULL &&
1246 port->mem.code_ro &&
1247 !IS_EXTERN (sym->etype) &&
1248 !funcInChain (sym->type))
1249 werror (E_CODE_NO_INIT, sym->name);
1251 /* if parameter or local variable then change */
1252 /* the storage class to reflect where the var will go */
1253 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1254 !IS_STATIC(sym->etype))
1256 if (options.stackAuto || (currFunc && IS_RENT (currFunc->etype)))
1258 SPEC_SCLS (sym->etype) = (options.useXstack ?
1259 S_XSTACK : S_STACK);
1263 /* hack-o-matic! I see no reason why the useXstack option should ever
1264 * control this allcoation, but the code was originally that way, and
1265 * changing it for non-390 ports breaks the compiler badly.
1267 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1268 SPEC_SCLS (sym->etype) = (useXdata ?
1274 /*------------------------------------------------------------------*/
1275 /* changePointer - change pointer to functions */
1276 /*------------------------------------------------------------------*/
1278 changePointer (symbol * sym)
1282 /* go thru the chain of declarations */
1283 /* if we find a pointer to a function */
1284 /* unconditionally change it to a ptr */
1286 for (p = sym->type; p; p = p->next)
1288 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1289 DCL_TYPE (p) = GPOINTER;
1290 if (IS_PTR (p) && IS_FUNC (p->next))
1291 DCL_TYPE (p) = CPOINTER;
1295 /*------------------------------------------------------------------*/
1296 /* checkDecl - does semantic validation of a declaration */
1297 /*------------------------------------------------------------------*/
1299 checkDecl (symbol * sym)
1302 checkSClass (sym); /* check the storage class */
1303 changePointer (sym); /* change pointers if required */
1305 /* if this is an array without any dimension
1306 then update the dimension from the initial value */
1307 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1308 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1313 /*------------------------------------------------------------------*/
1314 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1315 /*------------------------------------------------------------------*/
1317 copyLinkChain (sym_link * p)
1319 sym_link *head, *curr, *loop;
1322 head = loop = (curr ? newLink () : (void *) NULL);
1325 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1326 loop->next = (curr->next ? newLink () : (void *) NULL);
1335 /*------------------------------------------------------------------*/
1336 /* cleanUpBlock - cleansup the symbol table specified for all the */
1337 /* symbols in the given block */
1338 /*------------------------------------------------------------------*/
1340 cleanUpBlock (bucket ** table, int block)
1345 /* go thru the entire table */
1346 for (i = 0; i < 256; i++)
1348 for (chain = table[i]; chain; chain = chain->next)
1350 if (chain->block >= block)
1352 deleteSym (table, chain->sym, chain->name);
1358 /*------------------------------------------------------------------*/
1359 /* cleanUpLevel - cleansup the symbol table specified for all the */
1360 /* symbols in the given level */
1361 /*------------------------------------------------------------------*/
1363 cleanUpLevel (bucket ** table, int level)
1368 /* go thru the entire table */
1369 for (i = 0; i < 256; i++)
1371 for (chain = table[i]; chain; chain = chain->next)
1373 if (chain->level >= level)
1375 deleteSym (table, chain->sym, chain->name);
1381 /*------------------------------------------------------------------*/
1382 /* computeType - computes the resultant type from two types */
1383 /*------------------------------------------------------------------*/
1385 computeType (sym_link * type1, sym_link * type2)
1389 sym_link *etype1 = getSpec (type1);
1390 sym_link *etype2 = getSpec (type2);
1392 /* if one of them is a float then result is a float */
1393 /* here we assume that the types passed are okay */
1394 /* and can be cast to one another */
1395 /* which ever is greater in size */
1396 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1397 rType = newFloatLink ();
1399 /* if only one of them is a bit variable
1400 then the other one prevails */
1401 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1402 rType = copyLinkChain (type2);
1403 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1404 rType = copyLinkChain (type1);
1406 /* if one of them is a pointer then that
1409 rType = copyLinkChain (type1);
1410 else if (IS_PTR (type2))
1411 rType = copyLinkChain (type2);
1412 else if (getSize (type1) > getSize (type2))
1413 rType = copyLinkChain (type1);
1415 rType = copyLinkChain (type2);
1417 reType = getSpec (rType);
1419 /* if either of them unsigned then make this unsigned */
1420 if ((SPEC_USIGN (etype1) || SPEC_USIGN (etype2)) && !IS_FLOAT (reType))
1421 SPEC_USIGN (reType) = 1;
1423 /* if result is a literal then make not so */
1424 if (IS_LITERAL (reType))
1425 SPEC_SCLS (reType) = S_REGISTER;
1430 /*------------------------------------------------------------------*/
1431 /* compareType - will do type check return 1 if match */
1432 /*------------------------------------------------------------------*/
1434 compareType (sym_link * dest, sym_link * src)
1445 /* if dest is a declarator then */
1450 if (DCL_TYPE (src) == DCL_TYPE (dest))
1451 return compareType (dest->next, src->next);
1452 else if (IS_PTR (src) && IS_PTR (dest))
1454 else if (IS_PTR (dest) && IS_ARRAY (src))
1456 else if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1457 return -1 * compareType (dest->next, src);
1461 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1467 /* if one is a specifier and the other is not */
1468 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1469 (IS_SPEC (dest) && !IS_SPEC (src)))
1472 /* if one of them is a void then ok */
1473 if (SPEC_NOUN (dest) == V_VOID &&
1474 SPEC_NOUN (src) != V_VOID)
1477 if (SPEC_NOUN (dest) != V_VOID &&
1478 SPEC_NOUN (src) == V_VOID)
1481 /* if they are both bitfields then if the lengths
1482 and starts don't match */
1483 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1484 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1485 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1488 /* it is a specifier */
1489 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1491 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1492 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1493 getSize (dest) == getSize (src))
1495 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1500 else if (IS_STRUCT (dest))
1502 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1507 if (SPEC_LONG (dest) != SPEC_LONG (src))
1510 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1516 /*------------------------------------------------------------------*/
1517 /* inCalleeSaveList - return 1 if found in callee save list */
1518 /*------------------------------------------------------------------*/
1520 inCalleeSaveList (char *s)
1524 for (i = 0; options.calleeSaves[i]; i++)
1525 if (strcmp (options.calleeSaves[i], s) == 0)
1531 /*-----------------------------------------------------------------*/
1532 /* aggregateArgToPointer: change an agggregate type function */
1533 /* argument to a pointer to that type. */
1534 /*-----------------------------------------------------------------*/
1536 aggregateArgToPointer (value * val)
1538 if (IS_AGGREGATE (val->type))
1540 /* if this is a structure */
1541 /* then we need to add a new link */
1542 if (IS_STRUCT (val->type))
1544 /* first lets add DECLARATOR type */
1545 sym_link *p = val->type;
1547 werror (W_STRUCT_AS_ARG, val->name);
1548 val->type = newLink ();
1549 val->type->next = p;
1552 /* change to a pointer depending on the */
1553 /* storage class specified */
1554 switch (SPEC_SCLS (val->etype))
1557 DCL_TYPE (val->type) = IPOINTER;
1560 DCL_TYPE (val->type) = PPOINTER;
1563 if (TARGET_IS_DS390)
1565 /* The AUTO and REGISTER classes should probably
1566 * also become generic pointers, but I haven't yet
1567 * devised a test case for that.
1569 DCL_TYPE (val->type) = GPOINTER;
1576 DCL_TYPE (val->type) = POINTER;
1579 DCL_TYPE (val->type) = CPOINTER;
1582 DCL_TYPE (val->type) = FPOINTER;
1585 DCL_TYPE (val->type) = EEPPOINTER;
1588 DCL_TYPE (val->type) = GPOINTER;
1591 /* is there is a symbol associated then */
1592 /* change the type of the symbol as well */
1595 val->sym->type = copyLinkChain (val->type);
1596 val->sym->etype = getSpec (val->sym->type);
1600 /*------------------------------------------------------------------*/
1601 /* checkFunction - does all kinds of check on a function */
1602 /*------------------------------------------------------------------*/
1604 checkFunction (symbol * sym)
1607 value *exargs, *acargs;
1611 if (getenv("DEBUG_SANITY")) {
1612 fprintf (stderr, "checkFunction: %s ", sym->name);
1615 /* make sure the type is complete and sane */
1616 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1618 /* if not type then some kind of error */
1622 /* if the function has no type then make it return int */
1623 if (!sym->type->next)
1624 sym->type->next = sym->etype = newIntLink ();
1626 /* function cannot return aggregate */
1627 if (IS_AGGREGATE (sym->type->next))
1629 werror (E_FUNC_AGGR, sym->name);
1633 /* function cannot return bit */
1634 if (IS_BITVAR (sym->type->next))
1636 werror (E_FUNC_BIT, sym->name);
1640 /* check if this function is defined as calleeSaves
1641 then mark it as such */
1642 sym->calleeSave = inCalleeSaveList (sym->name);
1644 /* if interrupt service routine */
1645 /* then it cannot have arguments */
1646 if (sym->args && IS_ISR (sym->etype) && !IS_VOID (sym->args->type))
1648 werror (E_INT_ARGS, sym->name);
1652 if (!(csym = findSym (SymbolTab, sym, sym->name)))
1653 return 1; /* not defined nothing more to check */
1655 /* check if body already present */
1656 if (csym && csym->fbody)
1658 werror (E_FUNC_BODY, sym->name);
1662 /* check the return value type */
1663 if (compareType (csym->type, sym->type) <= 0)
1665 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1666 werror (E_CONTINUE, "previous definition type ");
1667 printTypeChain (csym->type, stderr);
1668 fprintf (stderr, "\n");
1669 werror (E_CONTINUE, "current definition type ");
1670 printTypeChain (sym->type, stderr);
1671 fprintf (stderr, "\n");
1675 if (SPEC_INTRTN (csym->etype) != SPEC_INTRTN (sym->etype))
1677 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1680 if (SPEC_BANK (csym->etype) != SPEC_BANK (sym->etype))
1682 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1685 if (SPEC_NAKED (csym->etype) != SPEC_NAKED (sym->etype))
1687 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1690 /* compare expected agrs with actual args */
1691 exargs = csym->args;
1694 /* for all the expected args do */
1697 exargs = exargs->next, acargs = acargs->next, argCnt++)
1699 if (getenv("DEBUG_SANITY")) {
1700 fprintf (stderr, "checkFunction: %s ", exargs->name);
1702 /* make sure the type is complete and sane */
1703 checkTypeSanity(exargs->etype, exargs->name);
1705 /* If the actual argument is an array, any prototype
1706 * will have modified it to a pointer. Duplicate that
1709 if (IS_AGGREGATE (acargs->type))
1711 checkValue = copyValue (acargs);
1712 aggregateArgToPointer (checkValue);
1716 checkValue = acargs;
1719 if (compareType (exargs->type, checkValue->type) <= 0)
1721 werror (E_ARG_TYPE, argCnt);
1726 /* if one them ended we have a problem */
1727 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1728 (!exargs && acargs && !IS_VOID (acargs->type)))
1729 werror (E_ARG_COUNT);
1731 /* replace with this defition */
1732 sym->cdef = csym->cdef;
1733 deleteSym (SymbolTab, csym, csym->name);
1734 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1735 if (IS_EXTERN (csym->etype) && !
1736 IS_EXTERN (sym->etype))
1738 addSet (&publics, sym);
1743 /*-----------------------------------------------------------------*/
1744 /* processFuncArgs - does some processing with function args */
1745 /*-----------------------------------------------------------------*/
1747 processFuncArgs (symbol * func, int ignoreName)
1752 /* if this function has variable argument list */
1753 /* then make the function a reentrant one */
1755 SPEC_RENT (func->etype) = 1;
1757 /* check if this function is defined as calleeSaves
1758 then mark it as such */
1759 func->calleeSave = inCalleeSaveList (func->name);
1761 val = func->args; /* loop thru all the arguments */
1763 /* if it is void then remove parameters */
1764 if (val && IS_VOID (val->type))
1770 /* reset regparm for the port */
1771 (*port->reset_regparms) ();
1772 /* if any of the arguments is an aggregate */
1773 /* change it to pointer to the same type */
1776 /* mark it as a register parameter if
1777 the function does not have VA_ARG
1778 and as port dictates */
1779 if (!func->hasVargs &&
1780 (*port->reg_parm) (val->type))
1782 SPEC_REGPARM (val->etype) = 1;
1785 if (IS_AGGREGATE (val->type))
1787 aggregateArgToPointer (val);
1793 /* if this is an internal generated function call */
1795 /* ignore --stack-auto for this one, we don't know how it is compiled */
1796 /* simply trust on --int-long-reent or --float-reent */
1797 if (IS_RENT(func->etype)) {
1801 /* if this function is reentrant or */
1802 /* automatics r 2b stacked then nothing */
1803 if (IS_RENT (func->etype) || options.stackAuto)
1812 /* if a symbolname is not given */
1813 /* synthesize a variable name */
1817 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1818 val->sym = newSymbol (val->name, 1);
1819 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1820 val->sym->type = copyLinkChain (val->type);
1821 val->sym->etype = getSpec (val->sym->type);
1822 val->sym->_isparm = 1;
1823 strcpy (val->sym->rname, val->name);
1824 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1825 SPEC_STAT (func->etype);
1826 addSymChain (val->sym);
1829 else /* symbol name given create synth name */
1832 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1833 strcpy (val->sym->rname, val->name);
1834 val->sym->_isparm = 1;
1835 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1836 (options.model != MODEL_SMALL ? xdata : data);
1837 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1838 SPEC_STAT (func->etype);
1844 /*-----------------------------------------------------------------*/
1845 /* isSymbolEqual - compares two symbols return 1 if they match */
1846 /*-----------------------------------------------------------------*/
1848 isSymbolEqual (symbol * dest, symbol * src)
1850 /* if pointers match then equal */
1854 /* if one of them is null then don't match */
1858 /* if both of them have rname match on rname */
1859 if (dest->rname[0] && src->rname[0])
1860 return (!strcmp (dest->rname, src->rname));
1862 /* otherwise match on name */
1863 return (!strcmp (dest->name, src->name));
1866 void PT(sym_link *type)
1868 printTypeChain(type,0);
1870 /*-----------------------------------------------------------------*/
1871 /* printTypeChain - prints the type chain in human readable form */
1872 /*-----------------------------------------------------------------*/
1874 printTypeChain (sym_link * type, FILE * of)
1888 if (DCL_PTR_VOLATILE(type)) {
1889 fprintf (of, "volatile ");
1891 switch (DCL_TYPE (type))
1894 fprintf (of, "function ");
1897 fprintf (of, "_generic * ");
1898 if (DCL_PTR_CONST (type))
1899 fprintf (of, "const ");
1902 fprintf (of, "_code * ");
1903 if (DCL_PTR_CONST (type))
1904 fprintf (of, "const ");
1907 fprintf (of, "_far * ");
1908 if (DCL_PTR_CONST (type))
1909 fprintf (of, "const ");
1912 fprintf (of, "_eeprom * ");
1913 if (DCL_PTR_CONST (type))
1914 fprintf (of, "const ");
1918 fprintf (of, "_near * ");
1919 if (DCL_PTR_CONST (type))
1920 fprintf (of, "const ");
1923 fprintf (of, "_idata *");
1924 if (DCL_PTR_CONST (type))
1925 fprintf (of, "const ");
1928 fprintf (of, "_pdata *");
1929 if (DCL_PTR_CONST (type))
1930 fprintf (of, "const ");
1933 fprintf (of, " _unkown *");
1934 if (DCL_PTR_CONST (type))
1935 fprintf (of, "const ");
1938 fprintf (of, "array of ");
1944 if (SPEC_VOLATILE (type))
1945 fprintf (of, "volatile ");
1946 if (SPEC_USIGN (type))
1947 fprintf (of, "unsigned ");
1948 if (SPEC_CONST (type))
1949 fprintf (of, "const ");
1951 switch (SPEC_NOUN (type))
1955 fprintf (of, "long ");
1956 fprintf (of, "int ");
1960 fprintf (of, "char ");
1964 fprintf (of, "void ");
1968 fprintf (of, "float ");
1972 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
1976 fprintf (of, "sbit ");
1980 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
1984 fprintf (of, "double ");
1988 fprintf (of, "unknown type ");
1998 /*-----------------------------------------------------------------*/
1999 /* cdbTypeInfo - print the type information for debugger */
2000 /*-----------------------------------------------------------------*/
2002 cdbTypeInfo (sym_link * type, FILE * of)
2004 fprintf (of, "{%d}", getSize (type));
2009 switch (DCL_TYPE (type))
2012 fprintf (of, "DF,");
2015 fprintf (of, "DG,");
2018 fprintf (of, "DC,");
2021 fprintf (of, "DX,");
2024 fprintf (of, "DD,");
2027 fprintf (of, "DI,");
2030 fprintf (of, "DP,");
2033 fprintf (of, "DA,");
2036 fprintf (of, "DA%d,", DCL_ELEM (type));
2044 switch (SPEC_NOUN (type))
2066 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2074 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2081 if (SPEC_USIGN (type))
2089 /*-----------------------------------------------------------------*/
2090 /* cdbSymbol - prints a symbol & its type information for debugger */
2091 /*-----------------------------------------------------------------*/
2093 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2105 fprintf (of, "S:"); /* symbol record */
2106 /* if this is not a structure symbol then
2107 we need to figure out the scope information */
2113 if (IS_STATIC (sym->etype))
2114 fprintf (of, "F%s$", moduleName); /* scope is file */
2116 fprintf (of, "G$"); /* scope is global */
2119 /* symbol is local */
2120 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2123 fprintf (of, "S$"); /* scope is structure */
2125 /* print the name, & mangled name */
2126 fprintf (of, "%s$%d$%d(", sym->name,
2127 sym->level, sym->block);
2129 cdbTypeInfo (sym->type, of);
2132 /* print the address space */
2133 map = SPEC_OCLS (sym->etype);
2134 fprintf (of, "%c,%d,%d",
2135 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2137 /* if assigned to registers then output register names */
2138 /* if this is a function then print
2139 if is it an interrupt routine & interrupt number
2140 and the register bank it is using */
2142 fprintf (of, ",%d,%d,%d", SPEC_INTRTN (sym->etype),
2143 SPEC_INTN (sym->etype), SPEC_BANK (sym->etype));
2144 /* alternate location to find this symbol @ : eg registers
2151 /*-----------------------------------------------------------------*/
2152 /* cdbStruct - print a structure for debugger */
2153 /*-----------------------------------------------------------------*/
2155 cdbStruct (structdef * sdef, int block, FILE * of,
2156 int inStruct, char *tag)
2161 /* if block # then must have function scope */
2162 fprintf (of, "F%s$", moduleName);
2163 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2164 for (sym = sdef->fields; sym; sym = sym->next)
2166 fprintf (of, "({%d}", sym->offset);
2167 cdbSymbol (sym, of, TRUE, FALSE);
2175 /*------------------------------------------------------------------*/
2176 /* cdbStructBlock - calls struct printing for a blcks */
2177 /*------------------------------------------------------------------*/
2179 cdbStructBlock (int block, FILE * of)
2182 bucket **table = StructTab;
2186 /* go thru the entire table */
2187 for (i = 0; i < 256; i++)
2189 for (chain = table[i]; chain; chain = chain->next)
2191 if (chain->block >= block)
2193 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2199 /*-----------------------------------------------------------------*/
2200 /* powof2 - returns power of two for the number if number is pow 2 */
2201 /*-----------------------------------------------------------------*/
2203 powof2 (unsigned long num)
2216 if (n1s > 1 || nshifts == 0)
2232 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2233 symbol *__muldiv[3][3][2];
2234 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2235 sym_link *__multypes[3][2];
2236 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2237 symbol *__conv[2][3][2];
2239 sym_link *floatType;
2242 _makeRegParam (symbol * sym)
2246 val = sym->args; /* loop thru all the arguments */
2248 /* reset regparm for the port */
2249 (*port->reset_regparms) ();
2252 SPEC_REGPARM (val->etype) = 1;
2257 /*-----------------------------------------------------------------*/
2258 /* initCSupport - create functions for C support routines */
2259 /*-----------------------------------------------------------------*/
2263 const char *smuldivmod[] =
2267 const char *sbwd[] =
2269 "char", "int", "long"
2276 int bwd, su, muldivmod, tofrom;
2278 floatType = newFloatLink ();
2280 for (bwd = 0; bwd < 3; bwd++)
2297 __multypes[bwd][0] = l;
2298 __multypes[bwd][1] = copyLinkChain (l);
2299 SPEC_USIGN (__multypes[bwd][1]) = 1;
2302 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2303 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2304 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2305 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2306 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2307 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2308 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2309 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2310 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2311 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2313 for (tofrom = 0; tofrom < 2; tofrom++)
2315 for (bwd = 0; bwd < 3; bwd++)
2317 for (su = 0; su < 2; su++)
2321 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2322 __conv[tofrom][bwd][su] = funcOfType (buffer, __multypes[bwd][su], floatType, 1, options.float_rent);
2326 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2327 __conv[tofrom][bwd][su] = funcOfType (buffer, floatType, __multypes[bwd][su], 1, options.float_rent);
2333 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2335 for (bwd = 0; bwd < 3; bwd++)
2337 for (su = 0; su < 2; su++)
2339 sprintf (buffer, "_%s%s%s",
2340 smuldivmod[muldivmod],
2343 __muldiv[muldivmod][bwd][su] = funcOfType (buffer, __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2344 SPEC_NONBANKED (__muldiv[muldivmod][bwd][su]->etype) = 1;
2345 if (bwd < port->muldiv.force_reg_param_below)
2346 _makeRegParam (__muldiv[muldivmod][bwd][su]);