1 /*-------------------------------------------------------------------------
2 SDCCsymt.c - Code file for Symbols table related structures and MACRO's.
3 Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU General Public License as published by the
7 Free Software Foundation; either version 2, or (at your option) any
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 In other words, you are welcome to use, share and improve this program.
20 You are forbidden to forbid anyone else to use, share and improve
21 what you give them. Help stamp out software-hoarding!
22 -------------------------------------------------------------------------*/
28 char *nounName(sym_link *sl) {
29 switch (SPEC_NOUN(sl))
32 if (SPEC_LONG(sl)) return "long";
33 if (sl->select.s._short) return "short";
36 case V_FLOAT: return "float";
37 case V_CHAR: return "char";
38 case V_VOID: return "void";
39 case V_STRUCT: return "struct";
40 case V_LABEL: return "label";
41 case V_BIT: return "bit";
42 case V_SBIT: return "sbit";
43 case V_DOUBLE: return "double";
48 bucket *SymbolTab[256]; /* the symbol table */
49 bucket *StructTab[256]; /* the structure table */
50 bucket *TypedefTab[256]; /* the typedef table */
51 bucket *LabelTab[256]; /* the Label table */
52 bucket *enumTab[256]; /* enumerated table */
54 /*------------------------------------------------------------------*/
55 /* initSymt () - initialises symbol table related stuff */
56 /*------------------------------------------------------------------*/
62 for (i = 0; i < 256; i++)
63 SymbolTab[i] = StructTab[i] = (void *) NULL;
67 /*-----------------------------------------------------------------*/
68 /* newBucket - allocates & returns a new bucket */
69 /*-----------------------------------------------------------------*/
75 bp = Safe_calloc (1, sizeof (bucket));
80 /*-----------------------------------------------------------------*/
81 /* hashKey - computes the hashkey given a symbol name */
82 /*-----------------------------------------------------------------*/
84 hashKey (const char *s)
86 unsigned long key = 0;
93 /*-----------------------------------------------------------------*/
94 /* addSym - adds a symbol to the hash Table */
95 /*-----------------------------------------------------------------*/
97 addSym (bucket ** stab,
103 int i; /* index into the hash Table */
104 bucket *bp; /* temp bucket * */
106 if (getenv("DEBUG_SANITY")) {
107 fprintf (stderr, "addSym: %s ", sname);
109 /* Make sure sym is a symbol and not a structdef */
110 if (StructTab!=stab) {
111 /* make sure the type is complete and sane */
112 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
115 /* the symbols are always added at the head of the list */
117 /* get a free entry */
118 bp = Safe_calloc (1, sizeof (bucket));
120 bp->sym = sym; /* update the symbol pointer */
121 bp->level = level; /* update the nest level */
123 strcpy (bp->name, sname); /* copy the name into place */
125 /* if this is the first entry */
128 bp->prev = bp->next = (void *) NULL; /* point to nothing */
131 /* not first entry then add @ head of list */
141 /*-----------------------------------------------------------------*/
142 /* deleteSym - deletes a symbol from the hash Table entry */
143 /*-----------------------------------------------------------------*/
145 deleteSym (bucket ** stab, void *sym, char *sname)
153 /* find the symbol */
156 if (bp->sym == sym) /* found it then break out */
157 break; /* of the loop */
161 if (!bp) /* did not find it */
163 /* if this is the first one in the chain */
167 if (stab[i]) /* if chain ! empty */
168 stab[i]->prev = (void *) NULL;
170 /* middle || end of chain */
173 if (bp->next) /* if not end of chain */
174 bp->next->prev = bp->prev;
176 bp->prev->next = bp->next;
181 /*-----------------------------------------------------------------*/
182 /* findSym - finds a symbol in a table */
183 /*-----------------------------------------------------------------*/
185 findSym (bucket ** stab, void *sym, const char *sname)
189 bp = stab[hashKey (sname)];
192 if (bp->sym == sym || strcmp (bp->name, sname) == 0)
197 return (bp ? bp->sym : (void *) NULL);
200 /*-----------------------------------------------------------------*/
201 /* findSymWithLevel - finds a symbol with a name & level */
202 /*-----------------------------------------------------------------*/
204 findSymWithLevel (bucket ** stab, symbol * sym)
208 bp = stab[hashKey (sym->name)];
211 ** do the search from the head of the list since the
212 ** elements are added at the head it is ensured that
213 ** we will find the deeper definitions before we find
214 ** the global ones. we need to check for symbols with
215 ** level <= to the level given, if levels match then block
216 ** numbers need to match as well
221 if (strcmp (bp->name, sym->name) == 0 && bp->level <= sym->level)
223 /* if this is parameter then nothing else need to be checked */
224 if (((symbol *) (bp->sym))->_isparm)
226 /* if levels match then block numbers hsould also match */
227 if (bp->level && bp->level == sym->level && bp->block == sym->block)
229 /* if levels don't match then we are okay */
230 if (bp->level && bp->level != sym->level && bp->block <= sym->block)
232 /* if this is a global variable then we are ok too */
240 return (void *) NULL;
243 /*-----------------------------------------------------------------*/
244 /* findSymWithBlock - finds a symbol with name in with a block */
245 /*-----------------------------------------------------------------*/
247 findSymWithBlock (bucket ** stab, symbol * sym, int block)
251 bp = stab[hashKey (sym->name)];
254 if (strcmp (bp->name, sym->name) == 0 &&
260 return (bp ? bp->sym : (void *) NULL);
263 /*------------------------------------------------------------------*/
264 /* newSymbol () - returns a new pointer to a symbol */
265 /*------------------------------------------------------------------*/
267 newSymbol (char *name, int scope)
271 sym = Safe_calloc (1, sizeof (symbol));
273 strcpy (sym->name, name); /* copy the name */
274 sym->level = scope; /* set the level */
275 sym->block = currBlockno;
276 sym->lineDef = yylineno; /* set the line number */
280 /*------------------------------------------------------------------*/
281 /* newLink - creates a new link (declarator,specifier) */
282 /*------------------------------------------------------------------*/
288 p = Safe_calloc (1, sizeof (sym_link));
293 /*------------------------------------------------------------------*/
294 /* newStruct - creats a new structdef from the free list */
295 /*------------------------------------------------------------------*/
297 newStruct (char *tag)
301 s = Safe_calloc (1, sizeof (structdef));
303 strcpy (s->tag, tag); /* copy the tag */
307 /*------------------------------------------------------------------*/
308 /* pointerTypes - do the computation for the pointer types */
309 /*------------------------------------------------------------------*/
311 pointerTypes (sym_link * ptr, sym_link * type)
316 /* find the first pointer type */
317 while (ptr && !IS_PTR (ptr))
320 /* could not find it */
321 if (!ptr || IS_SPEC (ptr) ||
322 DCL_TYPE (ptr) != UPOINTER)
325 /* change the pointer type depending on the
326 storage class of the type */
329 DCL_PTR_CONST (ptr) = SPEC_CONST (type);
330 DCL_PTR_VOLATILE (ptr) = SPEC_VOLATILE (type);
331 switch (SPEC_SCLS (type))
334 DCL_TYPE (ptr) = FPOINTER;
337 DCL_TYPE (ptr) = IPOINTER;
340 DCL_TYPE (ptr) = PPOINTER;
343 DCL_TYPE (ptr) = POINTER;
346 DCL_PTR_CONST (ptr) = port->mem.code_ro;
347 DCL_TYPE (ptr) = CPOINTER;
350 DCL_TYPE (ptr) = EEPPOINTER;
353 DCL_TYPE (ptr) = GPOINTER;
356 /* the storage class of type ends here */
359 SPEC_VOLATILE (type) = 0;
362 /* now change all the remaining unknown pointers
363 to generic pointers */
366 if (!IS_SPEC (ptr) && DCL_TYPE (ptr) == UPOINTER)
367 DCL_TYPE (ptr) = GPOINTER;
371 /* same for the type although it is highly unlikely that
372 type will have a pointer */
375 if (!IS_SPEC (type) && DCL_TYPE (type) == UPOINTER)
376 DCL_TYPE (type) = GPOINTER;
382 /*------------------------------------------------------------------*/
383 /* addDecl - adds a declarator @ the end of a chain */
384 /*------------------------------------------------------------------*/
386 addDecl (symbol * sym, int type, sym_link * p)
392 /* if we are passed a link then set head & tail */
401 head = tail = newLink ();
402 DCL_TYPE (head) = type;
405 /* if this is the first entry */
413 if (IS_SPEC (sym->etype) && IS_SPEC (head) && head == tail)
415 sym->etype = mergeSpec (sym->etype, head);
419 if (IS_SPEC (sym->etype) && !IS_SPEC (head) && head == tail)
422 while (t->next != sym->etype)
425 tail->next = sym->etype;
429 sym->etype->next = head;
435 /* if the type is a unknown pointer and has
436 a tspec then take the storage class const & volatile
437 attribute from the tspec & make it those of this
441 DCL_TYPE (p) == UPOINTER &&
444 if (!IS_SPEC (sym->etype))
446 sym->etype = sym->etype->next = newLink ();
447 sym->etype->class = SPECIFIER;
449 SPEC_SCLS (sym->etype) = SPEC_SCLS (DCL_TSPEC (p));
450 SPEC_CONST (sym->etype) = SPEC_CONST (DCL_TSPEC (p));
451 SPEC_VOLATILE (sym->etype) = SPEC_VOLATILE (DCL_TSPEC (p));
452 DCL_TSPEC (p) = NULL;
457 /*------------------------------------------------------------------
458 checkTypeSanity: prevent the user from doing e.g.:
460 ------------------------------------------------------------------*/
461 void checkTypeSanity(sym_link *etype, char *name) {
465 if (getenv("DEBUG_SANITY")) {
466 fprintf (stderr, "sanity check skipped for %s (etype==0)\n", name);
471 if (!IS_SPEC(etype)) {
472 if (getenv("DEBUG_SANITY")) {
473 fprintf (stderr, "sanity check skipped for %s (!IS_SPEC)\n", name);
478 noun=nounName(etype);
480 if (getenv("DEBUG_SANITY")) {
481 fprintf (stderr, "checking sanity for %s\n", name);
484 if ((SPEC_NOUN(etype)==V_CHAR ||
485 SPEC_NOUN(etype)==V_FLOAT ||
486 SPEC_NOUN(etype)==V_DOUBLE ||
487 SPEC_NOUN(etype)==V_VOID) &&
488 (etype->select.s._short || SPEC_LONG(etype))) {
489 // long or short for char float double or void
490 werror (E_LONG_OR_SHORT_INVALID, noun, name);
492 if ((SPEC_NOUN(etype)==V_FLOAT ||
493 SPEC_NOUN(etype)==V_DOUBLE ||
494 SPEC_NOUN(etype)==V_VOID) &&
495 (etype->select.s._signed || SPEC_USIGN(etype))) {
496 // signed or unsigned for float double or void
497 werror (E_SIGNED_OR_UNSIGNED_INVALID, noun, name);
500 if (!SPEC_NOUN(etype)) {
501 // special case for just "signed" or "unsigned" or "long"
502 if (etype->select.s._signed || SPEC_USIGN(etype) || SPEC_LONG(etype)) {
503 SPEC_NOUN(etype)=V_INT;
505 // special case for just "short"
506 if (etype->select.s._short) {
507 SPEC_NOUN(etype)=V_CHAR; // or maybe V_INT
511 // if still no noun (e.g. "const a;" or "data b;") assume an int
512 if (!SPEC_NOUN(etype)) {
513 SPEC_NOUN(etype)=V_INT;
516 if (etype->select.s._signed && SPEC_USIGN(etype)) {
517 // signed AND unsigned
518 werror (E_SIGNED_AND_UNSIGNED_INVALID, noun, name);
520 if (etype->select.s._short && SPEC_LONG(etype)) {
522 werror (E_LONG_AND_SHORT_INVALID, noun, name);
527 /*------------------------------------------------------------------*/
528 /* mergeSpec - merges two specifiers and returns the new one */
529 /*------------------------------------------------------------------*/
531 mergeSpec (sym_link * dest, sym_link * src)
534 if (SPEC_NOUN(src)) {
535 if (!SPEC_NOUN(dest)) {
536 SPEC_NOUN(dest)=SPEC_NOUN(src);
538 /* we shouldn't redeclare the type */
539 if (getenv("DEBUG_SANITY")) {
540 fprintf (stderr, "mergeSpec: ");
542 werror(E_TWO_OR_MORE_DATA_TYPES, yylval.yychar);
546 if (SPEC_SCLS(src)) {
547 /* if destination has no storage class */
548 if (!SPEC_SCLS (dest) || SPEC_SCLS(dest)==S_REGISTER) {
549 SPEC_SCLS (dest) = SPEC_SCLS (src);
551 if (getenv("DEBUG_SANITY")) {
552 fprintf (stderr, "mergeSpec: ");
554 werror(E_TWO_OR_MORE_STORAGE_CLASSES, yylval.yychar);
558 /* copy all the specifications */
560 // we really should do:
562 if (SPEC_what(src)) {
563 if (SPEC_what(dest)) {
564 werror(W_DUPLICATE_SPEC, "what");
566 SPEC_what(dst)=SPEC_what(src);
569 // but there are more important thing right now
571 SPEC_LONG (dest) |= SPEC_LONG (src);
572 dest->select.s._short=src->select.s._short;
573 SPEC_USIGN (dest) |= SPEC_USIGN (src);
574 dest->select.s._signed=src->select.s._signed;
575 SPEC_STAT (dest) |= SPEC_STAT (src);
576 SPEC_EXTR (dest) |= SPEC_EXTR (src);
577 SPEC_ABSA (dest) |= SPEC_ABSA (src);
578 SPEC_RENT (dest) |= SPEC_RENT (src);
579 SPEC_INTN (dest) |= SPEC_INTN (src);
580 SPEC_BANK (dest) |= SPEC_BANK (src);
581 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
582 SPEC_CRTCL (dest) |= SPEC_CRTCL (src);
583 SPEC_ADDR (dest) |= SPEC_ADDR (src);
584 SPEC_OCLS (dest) = SPEC_OCLS (src);
585 SPEC_BLEN (dest) |= SPEC_BLEN (src);
586 SPEC_BSTR (dest) |= SPEC_BSTR (src);
587 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
588 SPEC_NONBANKED (dest) |= SPEC_NONBANKED (src);
589 SPEC_NAKED (dest) |= SPEC_NAKED (src);
591 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
592 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
597 /*------------------------------------------------------------------*/
598 /* cloneSpec - copies the entire spec and returns a new spec */
599 /*------------------------------------------------------------------*/
601 cloneSpec (sym_link * src)
605 /* go thru chain till we find the specifier */
606 while (src && src->class != SPECIFIER)
610 memcpy (spec, src, sizeof (sym_link));
614 /*------------------------------------------------------------------*/
615 /* genSymName - generates and returns a name used for anonymous vars */
616 /*------------------------------------------------------------------*/
618 genSymName (int level)
620 static int gCount = 0;
621 static char gname[SDCC_NAME_MAX + 1];
623 sprintf (gname, "__%04d%04d", level, gCount++);
627 /*------------------------------------------------------------------*/
628 /* getSpec - returns the specifier part from a declaration chain */
629 /*------------------------------------------------------------------*/
631 getSpec (sym_link * p)
636 while (p && !(IS_SPEC (p)))
642 /*------------------------------------------------------------------*/
643 /* newCharLink() - creates an char type */
644 /*------------------------------------------------------------------*/
651 p->class = SPECIFIER;
652 SPEC_NOUN (p) = V_CHAR;
657 /*------------------------------------------------------------------*/
658 /* newFloatLink - a new Float type */
659 /*------------------------------------------------------------------*/
666 p->class = SPECIFIER;
667 SPEC_NOUN (p) = V_FLOAT;
672 /*------------------------------------------------------------------*/
673 /* newLongLink() - new long type */
674 /*------------------------------------------------------------------*/
681 p->class = SPECIFIER;
682 SPEC_NOUN (p) = V_INT;
688 /*------------------------------------------------------------------*/
689 /* newIntLink() - creates an int type */
690 /*------------------------------------------------------------------*/
697 p->class = SPECIFIER;
698 SPEC_NOUN (p) = V_INT;
703 /*------------------------------------------------------------------*/
704 /* getSize - returns size of a type chain in bits */
705 /*------------------------------------------------------------------*/
707 getSize (sym_link * p)
709 /* if nothing return 0 */
713 { /* if this is the specifier then */
714 switch (SPEC_NOUN (p))
715 { /* depending on the specifier type */
717 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
725 return SPEC_STRUCT (p)->size;
731 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
737 /* this is a specifier */
738 switch (DCL_TYPE (p))
743 return DCL_ELEM (p) * getSize (p->next);
760 /*------------------------------------------------------------------*/
761 /* bitsForType - returns # of bits required to store this type */
762 /*------------------------------------------------------------------*/
764 bitsForType (sym_link * p)
766 /* if nothing return 0 */
771 { /* if this is the specifier then */
773 switch (SPEC_NOUN (p))
774 { /* depending on the specifier type */
776 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
778 return FLOATSIZE * 8;
784 return SPEC_STRUCT (p)->size * 8;
790 return SPEC_BLEN (p);
796 /* this is a specifier */
797 switch (DCL_TYPE (p))
802 return DCL_ELEM (p) * getSize (p->next) * 8;
806 return (PTRSIZE * 8);
810 return (FPTRSIZE * 8);
812 return (GPTRSIZE * 8);
819 /*------------------------------------------------------------------*/
820 /* copySymbolChain - copies a symbol chain */
821 /*------------------------------------------------------------------*/
823 copySymbolChain (symbol * src)
830 dest = copySymbol (src);
831 dest->next = copySymbolChain (src->next);
835 /*------------------------------------------------------------------*/
836 /* copySymbol - makes a copy of a symbol */
837 /*------------------------------------------------------------------*/
839 copySymbol (symbol * src)
846 dest = newSymbol (src->name, src->level);
847 memcpy (dest, src, sizeof (symbol));
848 dest->level = src->level;
849 dest->block = src->block;
850 dest->ival = copyIlist (src->ival);
851 dest->type = copyLinkChain (src->type);
852 dest->etype = getSpec (dest->type);
854 dest->args = copyValueChain (src->args);
855 dest->key = src->key;
856 dest->calleeSave = src->calleeSave;
857 dest->allocreq = src->allocreq;
861 /*------------------------------------------------------------------*/
862 /* reverseSyms - reverses the links for a symbol chain */
863 /*------------------------------------------------------------------*/
865 reverseSyms (symbol * sym)
867 symbol *prev, *curr, *next;
882 sym->next = (void *) NULL;
886 /*------------------------------------------------------------------*/
887 /* reverseLink - reverses the links for a type chain */
888 /*------------------------------------------------------------------*/
890 reverseLink (sym_link * type)
892 sym_link *prev, *curr, *next;
907 type->next = (void *) NULL;
911 /*------------------------------------------------------------------*/
912 /* addSymChain - adds a symbol chain to the symboltable */
913 /*------------------------------------------------------------------*/
915 addSymChain (symbol * symHead)
917 symbol *sym = symHead;
921 for (; sym != NULL; sym = sym->next)
925 /* if already exists in the symbol table then check if
926 the previous was an extern definition if yes then
927 then check if the type match, if the types match then
928 delete the current entry and add the new entry */
929 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
930 csym->level == sym->level)
933 /* previous definition extern ? */
934 if (IS_EXTERN (csym->etype))
936 /* do types match ? */
937 if (checkType (csym->type, sym->type) != 1)
939 werror (E_DUPLICATE, csym->name);
941 /* delete current entry */
942 deleteSym (SymbolTab, csym, csym->name);
944 addSym (SymbolTab, sym, sym->name, sym->level, sym->block);
946 else /* not extern */
947 werror (E_DUPLICATE, sym->name);
951 /* check if previously defined */
952 if (csym && csym->level == sym->level)
954 /* if the previous one was declared as extern */
955 /* then check the type with the current one */
956 if (IS_EXTERN (csym->etype))
958 if (checkType (csym->type, sym->type) <= 0)
959 werror (W_EXTERN_MISMATCH, csym->name);
962 addSym (SymbolTab, sym, sym->name, sym->level, sym->block);
967 /*------------------------------------------------------------------*/
968 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
969 /*------------------------------------------------------------------*/
971 funcInChain (sym_link * lnk)
982 /*------------------------------------------------------------------*/
983 /* structElemType - returns the type info of a sturct member */
984 /*------------------------------------------------------------------*/
986 structElemType (sym_link * stype, value * id, value ** argsp)
988 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
989 sym_link *type, *etype;
990 sym_link *petype = getSpec (stype);
995 /* look for the id */
998 if (strcmp (fields->rname, id->name) == 0)
1002 *argsp = fields->args;
1004 type = copyLinkChain (fields->type);
1005 etype = getSpec (type);
1006 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1007 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1010 fields = fields->next;
1012 werror (E_NOT_MEMBER, id->name);
1017 /*------------------------------------------------------------------*/
1018 /* getStructElement - returns element of a tructure definition */
1019 /*------------------------------------------------------------------*/
1021 getStructElement (structdef * sdef, symbol * sym)
1025 for (field = sdef->fields; field; field = field->next)
1026 if (strcmp (field->name, sym->name) == 0)
1029 werror (E_NOT_MEMBER, sym->name);
1031 return sdef->fields;
1034 /*------------------------------------------------------------------*/
1035 /* compStructSize - computes the size of a structure */
1036 /*------------------------------------------------------------------*/
1038 compStructSize (int su, structdef * sdef)
1040 int sum = 0, usum = 0;
1044 /* for the identifiers */
1045 loop = sdef->fields;
1048 /* create the internal name for this variable */
1049 sprintf (loop->rname, "_%s", loop->name);
1050 loop->offset = (su == UNION ? sum = 0 : sum);
1051 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1053 /* if this is a bit field */
1056 /* change it to a unsigned bit */
1057 SPEC_NOUN (loop->etype) = V_BIT;
1058 SPEC_USIGN (loop->etype) = 1;
1059 /* check if this fit into the remaining */
1060 /* bits of this byte else align it to the */
1061 /* next byte boundary */
1062 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1063 SPEC_BSTR (loop->etype) = bitOffset;
1064 if ((bitOffset += (loop->bitVar % 8)) == 8)
1067 else /* does not fit */ {
1069 SPEC_BSTR (loop->etype) = bitOffset;
1070 sum += (loop->bitVar / 8);
1071 bitOffset += (loop->bitVar % 8);
1073 /* if this is the last field then pad */
1074 if (!loop->next && bitOffset && bitOffset != 8) {
1081 sum += getSize (loop->type);
1084 /* if function then do the arguments for it */
1085 if (funcInChain (loop->type)) {
1086 processFuncArgs (loop, 1);
1091 /* if this is not a bitfield but the */
1092 /* previous one was and did not take */
1093 /* the whole byte then pad the rest */
1094 if ((loop && !loop->bitVar) && bitOffset) {
1099 /* if union then size = sizeof larget field */
1101 usum = max (usum, sum);
1105 return (su == UNION ? usum : sum);
1108 /*------------------------------------------------------------------*/
1109 /* checkSClass - check the storage class specification */
1110 /*------------------------------------------------------------------*/
1112 checkSClass (symbol * sym)
1114 /* type is literal can happen foe enums change
1116 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1117 SPEC_SCLS (sym->etype) = S_AUTO;
1119 /* if sfr or sbit then must also be */
1120 /* volatile the initial value will be xlated */
1121 /* to an absolute address */
1122 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1123 SPEC_SCLS (sym->etype) == S_SFR)
1125 SPEC_VOLATILE (sym->etype) = 1;
1126 /* if initial value given */
1129 SPEC_ABSA (sym->etype) = 1;
1130 SPEC_ADDR (sym->etype) =
1131 (int) list2int (sym->ival);
1136 /* if absolute address given then it mark it as
1138 if (IS_ABSOLUTE (sym->etype))
1139 SPEC_VOLATILE (sym->etype) = 1;
1141 /* global variables declared const put into code */
1142 if (sym->level == 0 &&
1143 SPEC_SCLS (sym->etype) == S_CONSTANT)
1145 SPEC_SCLS (sym->etype) = S_CODE;
1146 SPEC_CONST (sym->etype) = 1;
1149 /* global variable in code space is a constant */
1150 if (sym->level == 0 &&
1151 SPEC_SCLS (sym->etype) == S_CODE &&
1153 SPEC_CONST (sym->etype) = 1;
1156 /* if bit variable then no storage class can be */
1157 /* specified since bit is already a storage */
1158 if (IS_BITVAR (sym->etype) &&
1159 (SPEC_SCLS (sym->etype) != S_FIXED &&
1160 SPEC_SCLS (sym->etype) != S_SBIT &&
1161 SPEC_SCLS (sym->etype) != S_BIT)
1164 werror (E_BITVAR_STORAGE, sym->name);
1165 SPEC_SCLS (sym->etype) = S_FIXED;
1168 /* extern variables cannot be initialized */
1169 if (IS_EXTERN (sym->etype) && sym->ival)
1171 werror (E_EXTERN_INIT, sym->name);
1175 /* if this is an automatic symbol then */
1176 /* storage class will be ignored and */
1177 /* symbol will be allocated on stack/ */
1178 /* data depending on flag */
1180 (options.stackAuto || reentrant) &&
1181 (SPEC_SCLS (sym->etype) != S_AUTO &&
1182 SPEC_SCLS (sym->etype) != S_FIXED &&
1183 SPEC_SCLS (sym->etype) != S_REGISTER &&
1184 SPEC_SCLS (sym->etype) != S_STACK &&
1185 SPEC_SCLS (sym->etype) != S_XSTACK &&
1186 SPEC_SCLS (sym->etype) != S_CONSTANT))
1188 werror (E_AUTO_ASSUMED, sym->name);
1189 SPEC_SCLS (sym->etype) = S_AUTO;
1192 /* automatic symbols cannot be given */
1193 /* an absolute address ignore it */
1195 SPEC_ABSA (sym->etype) &&
1196 (options.stackAuto || reentrant))
1198 werror (E_AUTO_ABSA, sym->name);
1199 SPEC_ABSA (sym->etype) = 0;
1202 /* arrays & pointers cannot be defined for bits */
1203 /* SBITS or SFRs or BIT */
1204 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1205 (SPEC_NOUN (sym->etype) == V_BIT ||
1206 SPEC_NOUN (sym->etype) == V_SBIT ||
1207 SPEC_SCLS (sym->etype) == S_SFR))
1208 werror (E_BIT_ARRAY, sym->name);
1210 /* if this is a bit|sbit then set length & start */
1211 if (SPEC_NOUN (sym->etype) == V_BIT ||
1212 SPEC_NOUN (sym->etype) == V_SBIT)
1214 SPEC_BLEN (sym->etype) = 1;
1215 SPEC_BSTR (sym->etype) = 0;
1218 /* variables declared in CODE space must have */
1219 /* initializers if not an extern */
1220 if (SPEC_SCLS (sym->etype) == S_CODE &&
1221 sym->ival == NULL &&
1223 port->mem.code_ro &&
1224 !IS_EXTERN (sym->etype) &&
1225 !funcInChain (sym->type))
1226 werror (E_CODE_NO_INIT, sym->name);
1228 /* if parameter or local variable then change */
1229 /* the storage class to reflect where the var will go */
1230 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1231 !IS_STATIC(sym->etype))
1233 if (options.stackAuto || (currFunc && IS_RENT (currFunc->etype)))
1235 SPEC_SCLS (sym->etype) = (options.useXstack ?
1236 S_XSTACK : S_STACK);
1240 /* hack-o-matic! I see no reason why the useXstack option should ever
1241 * control this allcoation, but the code was originally that way, and
1242 * changing it for non-390 ports breaks the compiler badly.
1244 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1245 SPEC_SCLS (sym->etype) = (useXdata ?
1251 /*------------------------------------------------------------------*/
1252 /* changePointer - change pointer to functions */
1253 /*------------------------------------------------------------------*/
1255 changePointer (symbol * sym)
1259 /* go thru the chain of declarations */
1260 /* if we find a pointer to a function */
1261 /* unconditionally change it to a ptr */
1263 for (p = sym->type; p; p = p->next)
1265 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1266 DCL_TYPE (p) = GPOINTER;
1267 if (IS_PTR (p) && IS_FUNC (p->next))
1268 DCL_TYPE (p) = CPOINTER;
1272 /*------------------------------------------------------------------*/
1273 /* checkDecl - does semantic validation of a declaration */
1274 /*------------------------------------------------------------------*/
1276 checkDecl (symbol * sym)
1279 checkSClass (sym); /* check the storage class */
1280 changePointer (sym); /* change pointers if required */
1282 /* if this is an array without any dimension
1283 then update the dimension from the initial value */
1284 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1285 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1290 /*------------------------------------------------------------------*/
1291 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1292 /*------------------------------------------------------------------*/
1294 copyLinkChain (sym_link * p)
1296 sym_link *head, *curr, *loop;
1299 head = loop = (curr ? newLink () : (void *) NULL);
1302 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1303 loop->next = (curr->next ? newLink () : (void *) NULL);
1312 /*------------------------------------------------------------------*/
1313 /* cleanUpBlock - cleansup the symbol table specified for all the */
1314 /* symbols in the given block */
1315 /*------------------------------------------------------------------*/
1317 cleanUpBlock (bucket ** table, int block)
1322 /* go thru the entire table */
1323 for (i = 0; i < 256; i++)
1325 for (chain = table[i]; chain; chain = chain->next)
1327 if (chain->block >= block)
1329 deleteSym (table, chain->sym, chain->name);
1335 /*------------------------------------------------------------------*/
1336 /* cleanUpLevel - cleansup the symbol table specified for all the */
1337 /* symbols in the given level */
1338 /*------------------------------------------------------------------*/
1340 cleanUpLevel (bucket ** table, int level)
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->level >= level)
1352 deleteSym (table, chain->sym, chain->name);
1358 /*------------------------------------------------------------------*/
1359 /* computeType - computes the resultant type from two types */
1360 /*------------------------------------------------------------------*/
1362 computeType (sym_link * type1, sym_link * type2)
1366 sym_link *etype1 = getSpec (type1);
1367 sym_link *etype2 = getSpec (type2);
1369 /* if one of them is a float then result is a float */
1370 /* here we assume that the types passed are okay */
1371 /* and can be cast to one another */
1372 /* which ever is greater in size */
1373 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1374 rType = newFloatLink ();
1376 /* if only one of them is a bit variable
1377 then the other one prevails */
1378 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1379 rType = copyLinkChain (type2);
1380 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1381 rType = copyLinkChain (type1);
1383 /* if one of them is a pointer then that
1386 rType = copyLinkChain (type1);
1387 else if (IS_PTR (type2))
1388 rType = copyLinkChain (type2);
1389 else if (getSize (type1) > getSize (type2))
1390 rType = copyLinkChain (type1);
1392 rType = copyLinkChain (type2);
1394 reType = getSpec (rType);
1396 /* if either of them unsigned then make this unsigned */
1397 if ((SPEC_USIGN (etype1) || SPEC_USIGN (etype2)) && !IS_FLOAT (reType))
1398 SPEC_USIGN (reType) = 1;
1400 /* if result is a literal then make not so */
1401 if (IS_LITERAL (reType))
1402 SPEC_SCLS (reType) = S_REGISTER;
1407 /*------------------------------------------------------------------*/
1408 /* checkType - will do type check return 1 if match */
1409 /*------------------------------------------------------------------*/
1411 checkType (sym_link * dest, sym_link * src)
1422 /* if dest is a declarator then */
1427 if (DCL_TYPE (src) == DCL_TYPE (dest))
1428 return checkType (dest->next, src->next);
1429 else if (IS_PTR (src) && IS_PTR (dest))
1431 else if (IS_PTR (dest) && IS_ARRAY (src))
1433 else if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1434 return -1 * checkType (dest->next, src);
1438 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1444 /* if one is a specifier and the other is not */
1445 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1446 (IS_SPEC (dest) && !IS_SPEC (src)))
1449 /* if one of them is a void then ok */
1450 if (SPEC_NOUN (dest) == V_VOID &&
1451 SPEC_NOUN (src) != V_VOID)
1454 if (SPEC_NOUN (dest) != V_VOID &&
1455 SPEC_NOUN (src) == V_VOID)
1458 /* if they are both bitfields then if the lengths
1459 and starts don't match */
1460 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1461 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1462 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1465 /* it is a specifier */
1466 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1468 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1469 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1470 getSize (dest) == getSize (src))
1472 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1477 else if (IS_STRUCT (dest))
1479 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1484 if (SPEC_LONG (dest) != SPEC_LONG (src))
1487 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1493 /*------------------------------------------------------------------*/
1494 /* inCalleeSaveList - return 1 if found in calle save list */
1495 /*------------------------------------------------------------------*/
1497 inCalleeSaveList (char *s)
1501 for (i = 0; options.calleeSaves[i]; i++)
1502 if (strcmp (options.calleeSaves[i], s) == 0)
1508 /*-----------------------------------------------------------------*/
1509 /* aggregateArgToPointer: change an agggregate type function */
1510 /* argument to a pointer to that type. */
1511 /*-----------------------------------------------------------------*/
1513 aggregateArgToPointer (value * val)
1515 if (IS_AGGREGATE (val->type))
1517 /* if this is a structure */
1518 /* then we need to add a new link */
1519 if (IS_STRUCT (val->type))
1521 /* first lets add DECLARATOR type */
1522 sym_link *p = val->type;
1524 werror (W_STRUCT_AS_ARG, val->name);
1525 val->type = newLink ();
1526 val->type->next = p;
1529 /* change to a pointer depending on the */
1530 /* storage class specified */
1531 switch (SPEC_SCLS (val->etype))
1534 DCL_TYPE (val->type) = IPOINTER;
1537 DCL_TYPE (val->type) = PPOINTER;
1540 if (TARGET_IS_DS390)
1542 /* The AUTO and REGISTER classes should probably
1543 * also become generic pointers, but I haven't yet
1544 * devised a test case for that.
1546 DCL_TYPE (val->type) = GPOINTER;
1553 DCL_TYPE (val->type) = POINTER;
1556 DCL_TYPE (val->type) = CPOINTER;
1559 DCL_TYPE (val->type) = FPOINTER;
1562 DCL_TYPE (val->type) = EEPPOINTER;
1565 DCL_TYPE (val->type) = GPOINTER;
1568 /* is there is a symbol associated then */
1569 /* change the type of the symbol as well */
1572 val->sym->type = copyLinkChain (val->type);
1573 val->sym->etype = getSpec (val->sym->type);
1577 /*------------------------------------------------------------------*/
1578 /* checkFunction - does all kinds of check on a function */
1579 /*------------------------------------------------------------------*/
1581 checkFunction (symbol * sym)
1584 value *exargs, *acargs;
1587 if (getenv("DEBUG_SANITY")) {
1588 fprintf (stderr, "checkFunction: %s ", sym->name);
1591 /* make sure the type is complete and sane */
1592 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1594 /* if not type then some kind of error */
1598 /* if the function has no type then make it return int */
1599 if (!sym->type->next)
1600 sym->type->next = sym->etype = newIntLink ();
1602 /* function cannot return aggregate */
1603 if (IS_AGGREGATE (sym->type->next))
1605 werror (E_FUNC_AGGR, sym->name);
1609 /* function cannot return bit */
1610 if (IS_BITVAR (sym->type->next))
1612 werror (E_FUNC_BIT, sym->name);
1616 /* check if this function is defined as calleeSaves
1617 then mark it as such */
1618 sym->calleeSave = inCalleeSaveList (sym->name);
1620 /* if interrupt service routine */
1621 /* then it cannot have arguments */
1622 if (sym->args && IS_ISR (sym->etype) && !IS_VOID (sym->args->type))
1624 werror (E_INT_ARGS, sym->name);
1628 if (!(csym = findSym (SymbolTab, sym, sym->name)))
1629 return 1; /* not defined nothing more to check */
1631 /* check if body already present */
1632 if (csym && csym->fbody)
1634 werror (E_FUNC_BODY, sym->name);
1638 /* check the return value type */
1639 if (checkType (csym->type, sym->type) <= 0)
1641 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1642 werror (E_CONTINUE, "previous definition type ");
1643 printTypeChain (csym->type, stderr);
1644 fprintf (stderr, "\n");
1645 werror (E_CONTINUE, "current definition type ");
1646 printTypeChain (sym->type, stderr);
1647 fprintf (stderr, "\n");
1651 if (SPEC_INTRTN (csym->etype) != SPEC_INTRTN (sym->etype))
1653 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1657 if (SPEC_BANK (csym->etype) != SPEC_BANK (sym->etype))
1659 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1663 /* compare expected agrs with actual args */
1664 exargs = csym->args;
1667 /* for all the expected args do */
1670 exargs = exargs->next, acargs = acargs->next, argCnt++)
1673 /* If the actual argument is an array, any prototype
1674 * will have modified it to a pointer. Duplicate that
1677 if (IS_AGGREGATE (acargs->type))
1679 checkValue = copyValue (acargs);
1680 aggregateArgToPointer (checkValue);
1684 checkValue = acargs;
1687 if (checkType (exargs->type, checkValue->type) <= 0)
1689 werror (E_ARG_TYPE, argCnt);
1694 /* if one them ended we have a problem */
1695 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1696 (!exargs && acargs && !IS_VOID (acargs->type)))
1697 werror (E_ARG_COUNT);
1699 /* replace with this defition */
1700 sym->cdef = csym->cdef;
1701 deleteSym (SymbolTab, csym, csym->name);
1702 addSym (SymbolTab, sym, sym->name, sym->level, sym->block);
1703 if (IS_EXTERN (csym->etype) && !
1704 IS_EXTERN (sym->etype))
1706 addSet (&publics, sym);
1711 /*-----------------------------------------------------------------*/
1712 /* processFuncArgs - does some processing with function args */
1713 /*-----------------------------------------------------------------*/
1715 processFuncArgs (symbol * func, int ignoreName)
1720 /* if this function has variable argument list */
1721 /* then make the function a reentrant one */
1723 SPEC_RENT (func->etype) = 1;
1725 /* check if this function is defined as calleeSaves
1726 then mark it as such */
1727 func->calleeSave = inCalleeSaveList (func->name);
1729 val = func->args; /* loop thru all the arguments */
1731 /* if it is void then remove parameters */
1732 if (val && IS_VOID (val->type))
1738 /* reset regparm for the port */
1739 (*port->reset_regparms) ();
1740 /* if any of the arguments is an aggregate */
1741 /* change it to pointer to the same type */
1744 /* mark it as a register parameter if
1745 the function does not have VA_ARG
1746 and as port dictates */
1747 if (!func->hasVargs &&
1748 (*port->reg_parm) (val->type))
1750 SPEC_REGPARM (val->etype) = 1;
1753 if (IS_AGGREGATE (val->type))
1755 aggregateArgToPointer (val);
1761 /* if this is an internal generated function call */
1763 /* ignore --stack-auto for this one, we don't know how it is compiled */
1764 /* simply trust on --int-long-reent or --float-reent */
1765 if (IS_RENT(func->etype)) {
1769 /* if this function is reentrant or */
1770 /* automatics r 2b stacked then nothing */
1771 if (IS_RENT (func->etype) || options.stackAuto)
1780 /* if a symbolname is not given */
1781 /* synthesize a variable name */
1785 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1786 val->sym = newSymbol (val->name, 1);
1787 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1788 val->sym->type = copyLinkChain (val->type);
1789 val->sym->etype = getSpec (val->sym->type);
1790 val->sym->_isparm = 1;
1791 strcpy (val->sym->rname, val->name);
1792 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1793 SPEC_STAT (func->etype);
1794 addSymChain (val->sym);
1797 else /* symbol name given create synth name */
1800 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1801 strcpy (val->sym->rname, val->name);
1802 val->sym->_isparm = 1;
1803 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1804 (options.model != MODEL_SMALL ? xdata : data);
1805 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1806 SPEC_STAT (func->etype);
1812 /*-----------------------------------------------------------------*/
1813 /* isSymbolEqual - compares two symbols return 1 if they match */
1814 /*-----------------------------------------------------------------*/
1816 isSymbolEqual (symbol * dest, symbol * src)
1818 /* if pointers match then equal */
1822 /* if one of them is null then don't match */
1826 /* if both of them have rname match on rname */
1827 if (dest->rname[0] && src->rname[0])
1828 return (!strcmp (dest->rname, src->rname));
1830 /* otherwise match on name */
1831 return (!strcmp (dest->name, src->name));
1834 void PT(sym_link *type)
1836 printTypeChain(type,0);
1838 /*-----------------------------------------------------------------*/
1839 /* printTypeChain - prints the type chain in human readable form */
1840 /*-----------------------------------------------------------------*/
1842 printTypeChain (sym_link * type, FILE * of)
1856 if (DCL_PTR_VOLATILE(type)) {
1857 fprintf (of, "volatile ");
1859 switch (DCL_TYPE (type))
1862 fprintf (of, "function ");
1865 fprintf (of, "_generic * ");
1866 if (DCL_PTR_CONST (type))
1867 fprintf (of, "const ");
1870 fprintf (of, "_code * ");
1871 if (DCL_PTR_CONST (type))
1872 fprintf (of, "const ");
1875 fprintf (of, "_far * ");
1876 if (DCL_PTR_CONST (type))
1877 fprintf (of, "const ");
1880 fprintf (of, "_eeprom * ");
1881 if (DCL_PTR_CONST (type))
1882 fprintf (of, "const ");
1886 fprintf (of, "_near * ");
1887 if (DCL_PTR_CONST (type))
1888 fprintf (of, "const ");
1891 fprintf (of, "_idata *");
1892 if (DCL_PTR_CONST (type))
1893 fprintf (of, "const ");
1896 fprintf (of, "_pdata *");
1897 if (DCL_PTR_CONST (type))
1898 fprintf (of, "const ");
1901 fprintf (of, " _unkown *");
1902 if (DCL_PTR_CONST (type))
1903 fprintf (of, "const ");
1906 fprintf (of, "array of ");
1912 if (SPEC_VOLATILE (type))
1913 fprintf (of, "volatile ");
1914 if (SPEC_USIGN (type))
1915 fprintf (of, "unsigned ");
1916 if (SPEC_CONST (type))
1917 fprintf (of, "const ");
1919 switch (SPEC_NOUN (type))
1923 fprintf (of, "long ");
1924 fprintf (of, "int ");
1928 fprintf (of, "char ");
1932 fprintf (of, "void ");
1936 fprintf (of, "float ");
1940 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
1944 fprintf (of, "sbit ");
1948 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
1952 fprintf (of, "double ");
1956 fprintf (of, "unknown type ");
1966 /*-----------------------------------------------------------------*/
1967 /* cdbTypeInfo - print the type information for debugger */
1968 /*-----------------------------------------------------------------*/
1970 cdbTypeInfo (sym_link * type, FILE * of)
1972 fprintf (of, "{%d}", getSize (type));
1977 switch (DCL_TYPE (type))
1980 fprintf (of, "DF,");
1983 fprintf (of, "DG,");
1986 fprintf (of, "DC,");
1989 fprintf (of, "DX,");
1992 fprintf (of, "DD,");
1995 fprintf (of, "DI,");
1998 fprintf (of, "DP,");
2001 fprintf (of, "DA,");
2004 fprintf (of, "DA%d,", DCL_ELEM (type));
2012 switch (SPEC_NOUN (type))
2034 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2042 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2049 if (SPEC_USIGN (type))
2057 /*-----------------------------------------------------------------*/
2058 /* cdbSymbol - prints a symbol & its type information for debugger */
2059 /*-----------------------------------------------------------------*/
2061 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2073 fprintf (of, "S:"); /* symbol record */
2074 /* if this is not a structure symbol then
2075 we need to figure out the scope information */
2081 if (IS_STATIC (sym->etype))
2082 fprintf (of, "F%s$", moduleName); /* scope is file */
2084 fprintf (of, "G$"); /* scope is global */
2087 /* symbol is local */
2088 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2091 fprintf (of, "S$"); /* scope is structure */
2093 /* print the name, & mangled name */
2094 fprintf (of, "%s$%d$%d(", sym->name,
2095 sym->level, sym->block);
2097 cdbTypeInfo (sym->type, of);
2100 /* print the address space */
2101 map = SPEC_OCLS (sym->etype);
2102 fprintf (of, "%c,%d,%d",
2103 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2105 /* if assigned to registers then output register names */
2106 /* if this is a function then print
2107 if is it an interrupt routine & interrupt number
2108 and the register bank it is using */
2110 fprintf (of, ",%d,%d,%d", SPEC_INTRTN (sym->etype),
2111 SPEC_INTN (sym->etype), SPEC_BANK (sym->etype));
2112 /* alternate location to find this symbol @ : eg registers
2119 /*-----------------------------------------------------------------*/
2120 /* cdbStruct - print a structure for debugger */
2121 /*-----------------------------------------------------------------*/
2123 cdbStruct (structdef * sdef, int block, FILE * of,
2124 int inStruct, char *tag)
2129 /* if block # then must have function scope */
2130 fprintf (of, "F%s$", moduleName);
2131 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2132 for (sym = sdef->fields; sym; sym = sym->next)
2134 fprintf (of, "({%d}", sym->offset);
2135 cdbSymbol (sym, of, TRUE, FALSE);
2143 /*------------------------------------------------------------------*/
2144 /* cdbStructBlock - calls struct printing for a blcks */
2145 /*------------------------------------------------------------------*/
2147 cdbStructBlock (int block, FILE * of)
2150 bucket **table = StructTab;
2154 /* go thru the entire table */
2155 for (i = 0; i < 256; i++)
2157 for (chain = table[i]; chain; chain = chain->next)
2159 if (chain->block >= block)
2161 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2167 /*-----------------------------------------------------------------*/
2168 /* powof2 - returns power of two for the number if number is pow 2 */
2169 /*-----------------------------------------------------------------*/
2171 powof2 (unsigned long num)
2184 if (n1s > 1 || nshifts == 0)
2200 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2201 symbol *__muldiv[3][3][2];
2202 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2203 sym_link *__multypes[3][2];
2204 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2205 symbol *__conv[2][3][2];
2207 sym_link *floatType;
2210 _makeRegParam (symbol * sym)
2214 val = sym->args; /* loop thru all the arguments */
2216 /* reset regparm for the port */
2217 (*port->reset_regparms) ();
2220 SPEC_REGPARM (val->etype) = 1;
2225 /*-----------------------------------------------------------------*/
2226 /* initCSupport - create functions for C support routines */
2227 /*-----------------------------------------------------------------*/
2231 const char *smuldivmod[] =
2235 const char *sbwd[] =
2237 "char", "int", "long"
2244 int bwd, su, muldivmod, tofrom;
2246 floatType = newFloatLink ();
2248 for (bwd = 0; bwd < 3; bwd++)
2265 __multypes[bwd][0] = l;
2266 __multypes[bwd][1] = copyLinkChain (l);
2267 SPEC_USIGN (__multypes[bwd][1]) = 1;
2270 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2271 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2272 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2273 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2274 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2275 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2276 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2277 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2278 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2279 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2281 for (tofrom = 0; tofrom < 2; tofrom++)
2283 for (bwd = 0; bwd < 3; bwd++)
2285 for (su = 0; su < 2; su++)
2289 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2290 __conv[tofrom][bwd][su] = funcOfType (buffer, __multypes[bwd][su], floatType, 1, options.float_rent);
2294 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2295 __conv[tofrom][bwd][su] = funcOfType (buffer, floatType, __multypes[bwd][su], 1, options.float_rent);
2301 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2303 for (bwd = 0; bwd < 3; bwd++)
2305 for (su = 0; su < 2; su++)
2307 sprintf (buffer, "_%s%s%s",
2308 smuldivmod[muldivmod],
2311 __muldiv[muldivmod][bwd][su] = funcOfType (buffer, __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2312 SPEC_NONBANKED (__muldiv[muldivmod][bwd][su]->etype) = 1;
2313 if (bwd < port->muldiv.force_reg_param_below)
2314 _makeRegParam (__muldiv[muldivmod][bwd][su]);