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))
324 if (IS_PTR(ptr) && DCL_TYPE(ptr)!=UPOINTER) {
325 pointerTypes (ptr->next, type);
329 /* change the pointer type depending on the
330 storage class of the type */
333 DCL_PTR_CONST (ptr) = SPEC_CONST (type);
334 DCL_PTR_VOLATILE (ptr) = SPEC_VOLATILE (type);
335 switch (SPEC_SCLS (type))
338 DCL_TYPE (ptr) = FPOINTER;
341 DCL_TYPE (ptr) = IPOINTER;
344 DCL_TYPE (ptr) = PPOINTER;
347 DCL_TYPE (ptr) = POINTER;
350 DCL_PTR_CONST (ptr) = port->mem.code_ro;
351 DCL_TYPE (ptr) = CPOINTER;
354 DCL_TYPE (ptr) = EEPPOINTER;
357 DCL_TYPE (ptr) = GPOINTER;
360 /* the storage class of type ends here */
363 SPEC_VOLATILE (type) = 0;
366 /* now change all the remaining unknown pointers
367 to generic pointers */
370 if (!IS_SPEC (ptr) && DCL_TYPE (ptr) == UPOINTER)
371 DCL_TYPE (ptr) = GPOINTER;
375 /* same for the type although it is highly unlikely that
376 type will have a pointer */
379 if (!IS_SPEC (type) && DCL_TYPE (type) == UPOINTER)
380 DCL_TYPE (type) = GPOINTER;
386 /*------------------------------------------------------------------*/
387 /* addDecl - adds a declarator @ the end of a chain */
388 /*------------------------------------------------------------------*/
390 addDecl (symbol * sym, int type, sym_link * p)
396 /* if we are passed a link then set head & tail */
405 head = tail = newLink ();
406 DCL_TYPE (head) = type;
409 /* if this is the first entry */
417 if (IS_SPEC (sym->etype) && IS_SPEC (head) && head == tail)
419 sym->etype = mergeSpec (sym->etype, head, sym->name);
423 if (IS_SPEC (sym->etype) && !IS_SPEC (head) && head == tail)
426 while (t->next != sym->etype)
429 tail->next = sym->etype;
433 sym->etype->next = head;
439 /* if the type is an unknown pointer and has
440 a tspec then take the storage class const & volatile
441 attribute from the tspec & make it those of this
445 //DCL_TYPE (p) == UPOINTER &&
448 if (!IS_SPEC (sym->etype))
450 sym->etype = sym->etype->next = newLink ();
451 sym->etype->class = SPECIFIER;
453 SPEC_SCLS (sym->etype) = SPEC_SCLS (DCL_TSPEC (p));
454 SPEC_CONST (sym->etype) = SPEC_CONST (DCL_TSPEC (p));
455 SPEC_VOLATILE (sym->etype) = SPEC_VOLATILE (DCL_TSPEC (p));
456 DCL_TSPEC (p) = NULL;
461 /*------------------------------------------------------------------
462 checkTypeSanity: prevent the user from doing e.g.:
464 ------------------------------------------------------------------*/
465 void checkTypeSanity(sym_link *etype, char *name) {
469 if (getenv("DEBUG_SANITY")) {
470 fprintf (stderr, "sanity check skipped for %s (etype==0)\n", name);
475 if (!IS_SPEC(etype)) {
476 if (getenv("DEBUG_SANITY")) {
477 fprintf (stderr, "sanity check skipped for %s (!IS_SPEC)\n", name);
482 noun=nounName(etype);
484 if (getenv("DEBUG_SANITY")) {
485 fprintf (stderr, "checking sanity for %s %x\n", name, (int)etype);
488 if ((SPEC_NOUN(etype)==V_CHAR ||
489 SPEC_NOUN(etype)==V_FLOAT ||
490 SPEC_NOUN(etype)==V_DOUBLE ||
491 SPEC_NOUN(etype)==V_VOID) &&
492 (etype->select.s._short || SPEC_LONG(etype))) {
493 // long or short for char float double or void
494 werror (E_LONG_OR_SHORT_INVALID, noun, name);
496 if ((SPEC_NOUN(etype)==V_FLOAT ||
497 SPEC_NOUN(etype)==V_DOUBLE ||
498 SPEC_NOUN(etype)==V_VOID) &&
499 (etype->select.s._signed || SPEC_USIGN(etype))) {
500 // signed or unsigned for float double or void
501 werror (E_SIGNED_OR_UNSIGNED_INVALID, noun, name);
504 // special case for "short"
505 if (etype->select.s._short) {
506 SPEC_NOUN(etype) = options.shortis8bits ? V_CHAR : V_INT;
507 etype->select.s._short = 0;
511 "const a;" or "data b;" or "signed s" or "long l"
513 if (!SPEC_NOUN(etype)) {
514 SPEC_NOUN(etype)=V_INT;
517 if (etype->select.s._signed && SPEC_USIGN(etype)) {
518 // signed AND unsigned
519 werror (E_SIGNED_AND_UNSIGNED_INVALID, noun, name);
521 if (etype->select.s._short && SPEC_LONG(etype)) {
523 werror (E_LONG_AND_SHORT_INVALID, noun, name);
528 /*------------------------------------------------------------------*/
529 /* mergeSpec - merges two specifiers and returns the new one */
530 /*------------------------------------------------------------------*/
532 mergeSpec (sym_link * dest, sym_link * src, char *name)
537 if (!IS_SPEC(dest)) {
538 // This can happen for pointers, find the end type
539 while (dest && !IS_SPEC(dest))
543 // here we have a declarator as source, reverse them
547 while (dest && !IS_SPEC(dest)) {
548 // and find the specifier
555 if (!IS_SPEC(dest) || !IS_SPEC(src)) {
556 werror (E_INTERNAL_ERROR, __FILE__, __LINE__, "cannot merge declarator");
560 if (getenv("DEBUG_mergeSpec")) {
561 fprintf (stderr, "mergeSpec: \"%s\"\n", name);
564 if (SPEC_NOUN(src)) {
565 if (!SPEC_NOUN(dest)) {
566 SPEC_NOUN(dest)=SPEC_NOUN(src);
568 /* we shouldn't redeclare the type */
569 if (getenv("DEBUG_SANITY")) {
570 fprintf (stderr, "mergeSpec: ");
572 werror(E_TWO_OR_MORE_DATA_TYPES, name);
576 if (SPEC_SCLS(src)) {
577 /* if destination has no storage class */
578 if (!SPEC_SCLS (dest) || SPEC_SCLS(dest)==S_REGISTER) {
579 SPEC_SCLS (dest) = SPEC_SCLS (src);
581 if (getenv("DEBUG_SANITY")) {
582 fprintf (stderr, "mergeSpec: ");
584 werror(E_TWO_OR_MORE_STORAGE_CLASSES, name);
588 /* copy all the specifications */
590 // we really should do:
592 if (SPEC_what(src)) {
593 if (SPEC_what(dest)) {
594 werror(W_DUPLICATE_SPEC, "what");
596 SPEC_what(dst)|=SPEC_what(src);
599 // but there are more important thing right now
601 SPEC_LONG (dest) |= SPEC_LONG (src);
602 dest->select.s._short|=src->select.s._short;
603 SPEC_USIGN (dest) |= SPEC_USIGN (src);
604 dest->select.s._signed|=src->select.s._signed;
605 SPEC_STAT (dest) |= SPEC_STAT (src);
606 SPEC_EXTR (dest) |= SPEC_EXTR (src);
607 SPEC_ABSA (dest) |= SPEC_ABSA (src);
608 SPEC_RENT (dest) |= SPEC_RENT (src);
609 SPEC_INTN (dest) |= SPEC_INTN (src);
610 SPEC_BANK (dest) |= SPEC_BANK (src);
611 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
612 SPEC_CRTCL (dest) |= SPEC_CRTCL (src);
613 SPEC_ADDR (dest) |= SPEC_ADDR (src);
614 SPEC_OCLS (dest) = SPEC_OCLS (src);
615 SPEC_BLEN (dest) |= SPEC_BLEN (src);
616 SPEC_BSTR (dest) |= SPEC_BSTR (src);
617 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
618 SPEC_NONBANKED (dest) |= SPEC_NONBANKED (src);
619 SPEC_NAKED (dest) |= SPEC_NAKED (src);
621 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
622 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
627 /*------------------------------------------------------------------*/
628 /* cloneSpec - copies the entire spec and returns a new spec */
629 /*------------------------------------------------------------------*/
631 cloneSpec (sym_link * src)
635 /* go thru chain till we find the specifier */
636 while (src && src->class != SPECIFIER)
640 memcpy (spec, src, sizeof (sym_link));
644 /*------------------------------------------------------------------*/
645 /* genSymName - generates and returns a name used for anonymous vars */
646 /*------------------------------------------------------------------*/
648 genSymName (int level)
650 static int gCount = 0;
651 static char gname[SDCC_NAME_MAX + 1];
653 sprintf (gname, "__%04d%04d", level, gCount++);
657 /*------------------------------------------------------------------*/
658 /* getSpec - returns the specifier part from a declaration chain */
659 /*------------------------------------------------------------------*/
661 getSpec (sym_link * p)
666 while (p && !(IS_SPEC (p)))
672 /*------------------------------------------------------------------*/
673 /* newCharLink() - creates an char type */
674 /*------------------------------------------------------------------*/
681 p->class = SPECIFIER;
682 SPEC_NOUN (p) = V_CHAR;
687 /*------------------------------------------------------------------*/
688 /* newFloatLink - a new Float type */
689 /*------------------------------------------------------------------*/
696 p->class = SPECIFIER;
697 SPEC_NOUN (p) = V_FLOAT;
702 /*------------------------------------------------------------------*/
703 /* newLongLink() - new long type */
704 /*------------------------------------------------------------------*/
711 p->class = SPECIFIER;
712 SPEC_NOUN (p) = V_INT;
718 /*------------------------------------------------------------------*/
719 /* newIntLink() - creates an int type */
720 /*------------------------------------------------------------------*/
727 p->class = SPECIFIER;
728 SPEC_NOUN (p) = V_INT;
733 /*------------------------------------------------------------------*/
734 /* getSize - returns size of a type chain in bits */
735 /*------------------------------------------------------------------*/
737 getSize (sym_link * p)
739 /* if nothing return 0 */
743 { /* if this is the specifier then */
744 switch (SPEC_NOUN (p))
745 { /* depending on the specifier type */
747 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
755 return SPEC_STRUCT (p)->size;
761 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
767 /* this is a specifier */
768 switch (DCL_TYPE (p))
773 return DCL_ELEM (p) * getSize (p->next);
790 /*------------------------------------------------------------------*/
791 /* bitsForType - returns # of bits required to store this type */
792 /*------------------------------------------------------------------*/
794 bitsForType (sym_link * p)
796 /* if nothing return 0 */
801 { /* if this is the specifier then */
803 switch (SPEC_NOUN (p))
804 { /* depending on the specifier type */
806 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
808 return FLOATSIZE * 8;
814 return SPEC_STRUCT (p)->size * 8;
820 return SPEC_BLEN (p);
826 /* this is a specifier */
827 switch (DCL_TYPE (p))
832 return DCL_ELEM (p) * getSize (p->next) * 8;
836 return (PTRSIZE * 8);
840 return (FPTRSIZE * 8);
842 return (GPTRSIZE * 8);
849 /*------------------------------------------------------------------*/
850 /* copySymbolChain - copies a symbol chain */
851 /*------------------------------------------------------------------*/
853 copySymbolChain (symbol * src)
860 dest = copySymbol (src);
861 dest->next = copySymbolChain (src->next);
865 /*------------------------------------------------------------------*/
866 /* copySymbol - makes a copy of a symbol */
867 /*------------------------------------------------------------------*/
869 copySymbol (symbol * src)
876 dest = newSymbol (src->name, src->level);
877 memcpy (dest, src, sizeof (symbol));
878 dest->level = src->level;
879 dest->block = src->block;
880 dest->ival = copyIlist (src->ival);
881 dest->type = copyLinkChain (src->type);
882 dest->etype = getSpec (dest->type);
884 dest->args = copyValueChain (src->args);
885 dest->key = src->key;
886 dest->calleeSave = src->calleeSave;
887 dest->allocreq = src->allocreq;
891 /*------------------------------------------------------------------*/
892 /* reverseSyms - reverses the links for a symbol chain */
893 /*------------------------------------------------------------------*/
895 reverseSyms (symbol * sym)
897 symbol *prev, *curr, *next;
912 sym->next = (void *) NULL;
916 /*------------------------------------------------------------------*/
917 /* reverseLink - reverses the links for a type chain */
918 /*------------------------------------------------------------------*/
920 reverseLink (sym_link * type)
922 sym_link *prev, *curr, *next;
937 type->next = (void *) NULL;
941 /*------------------------------------------------------------------*/
942 /* addSymChain - adds a symbol chain to the symboltable */
943 /*------------------------------------------------------------------*/
945 addSymChain (symbol * symHead)
947 symbol *sym = symHead;
950 for (; sym != NULL; sym = sym->next)
953 checkTypeSanity(sym->etype, sym->name);
955 /* if already exists in the symbol table then check if
956 one of them is an extern definition if yes then
957 then check if the type match, if the types match then
958 delete the current entry and add the new entry */
959 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
960 csym->level == sym->level) {
962 /* one definition extern ? */
963 if (IS_EXTERN (csym->etype) || IS_EXTERN (sym->etype)) {
964 /* do types match ? */
965 if (compareType (csym->type, sym->type) != 1) {
967 werror (E_EXTERN_MISMATCH, csym->name);
970 /* delete current entry */
971 deleteSym (SymbolTab, csym, csym->name);
974 werror (E_DUPLICATE, sym->name);
980 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
985 /*------------------------------------------------------------------*/
986 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
987 /*------------------------------------------------------------------*/
989 funcInChain (sym_link * lnk)
1000 /*------------------------------------------------------------------*/
1001 /* structElemType - returns the type info of a sturct member */
1002 /*------------------------------------------------------------------*/
1004 structElemType (sym_link * stype, value * id, value ** argsp)
1006 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
1007 sym_link *type, *etype;
1008 sym_link *petype = getSpec (stype);
1013 /* look for the id */
1016 if (strcmp (fields->rname, id->name) == 0)
1020 *argsp = fields->args;
1022 type = copyLinkChain (fields->type);
1023 etype = getSpec (type);
1024 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1025 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1028 fields = fields->next;
1030 werror (E_NOT_MEMBER, id->name);
1035 /*------------------------------------------------------------------*/
1036 /* getStructElement - returns element of a tructure definition */
1037 /*------------------------------------------------------------------*/
1039 getStructElement (structdef * sdef, symbol * sym)
1043 for (field = sdef->fields; field; field = field->next)
1044 if (strcmp (field->name, sym->name) == 0)
1047 werror (E_NOT_MEMBER, sym->name);
1049 return sdef->fields;
1052 /*------------------------------------------------------------------*/
1053 /* compStructSize - computes the size of a structure */
1054 /*------------------------------------------------------------------*/
1056 compStructSize (int su, structdef * sdef)
1058 int sum = 0, usum = 0;
1062 /* for the identifiers */
1063 loop = sdef->fields;
1066 /* create the internal name for this variable */
1067 sprintf (loop->rname, "_%s", loop->name);
1068 loop->offset = (su == UNION ? sum = 0 : sum);
1069 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1071 /* if this is a bit field */
1074 /* change it to a unsigned bit */
1075 SPEC_NOUN (loop->etype) = V_BIT;
1076 SPEC_USIGN (loop->etype) = 1;
1077 /* check if this fit into the remaining */
1078 /* bits of this byte else align it to the */
1079 /* next byte boundary */
1080 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1081 SPEC_BSTR (loop->etype) = bitOffset;
1082 if ((bitOffset += (loop->bitVar % 8)) == 8)
1085 else /* does not fit */ {
1087 SPEC_BSTR (loop->etype) = bitOffset;
1088 sum += (loop->bitVar / 8);
1089 bitOffset += (loop->bitVar % 8);
1091 /* if this is the last field then pad */
1092 if (!loop->next && bitOffset && bitOffset != 8) {
1098 checkDecl (loop, 1);
1099 sum += getSize (loop->type);
1102 /* if function then do the arguments for it */
1103 if (funcInChain (loop->type)) {
1104 processFuncArgs (loop, 1);
1109 /* if this is not a bitfield but the */
1110 /* previous one was and did not take */
1111 /* the whole byte then pad the rest */
1112 if ((loop && !loop->bitVar) && bitOffset) {
1117 /* if union then size = sizeof larget field */
1119 usum = max (usum, sum);
1123 return (su == UNION ? usum : sum);
1126 /*------------------------------------------------------------------*/
1127 /* checkSClass - check the storage class specification */
1128 /*------------------------------------------------------------------*/
1130 checkSClass (symbol * sym, int isProto)
1132 if (getenv("DEBUG_SANITY")) {
1133 fprintf (stderr, "checkSClass: %s \n", sym->name);
1135 if (strcmp(sym->name, "_testsGlobal")==0) {
1139 /* type is literal can happen foe enums change
1141 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1142 SPEC_SCLS (sym->etype) = S_AUTO;
1144 /* if sfr or sbit then must also be */
1145 /* volatile the initial value will be xlated */
1146 /* to an absolute address */
1147 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1148 SPEC_SCLS (sym->etype) == S_SFR)
1150 SPEC_VOLATILE (sym->etype) = 1;
1151 /* if initial value given */
1154 SPEC_ABSA (sym->etype) = 1;
1155 SPEC_ADDR (sym->etype) =
1156 (int) list2int (sym->ival);
1161 /* if absolute address given then it mark it as
1163 if (IS_ABSOLUTE (sym->etype))
1164 SPEC_VOLATILE (sym->etype) = 1;
1166 /* global variables declared const put into code */
1167 if (sym->level == 0 &&
1168 SPEC_CONST (sym->etype)) {
1169 SPEC_SCLS (sym->etype) = S_CODE;
1172 /* global variable in code space is a constant */
1173 if (sym->level == 0 &&
1174 SPEC_SCLS (sym->etype) == S_CODE &&
1176 SPEC_CONST (sym->etype) = 1;
1179 /* if bit variable then no storage class can be */
1180 /* specified since bit is already a storage */
1181 if (IS_BITVAR (sym->etype) &&
1182 (SPEC_SCLS (sym->etype) != S_FIXED &&
1183 SPEC_SCLS (sym->etype) != S_SBIT &&
1184 SPEC_SCLS (sym->etype) != S_BIT)
1187 werror (E_BITVAR_STORAGE, sym->name);
1188 SPEC_SCLS (sym->etype) = S_FIXED;
1191 /* extern variables cannot be initialized */
1192 if (IS_EXTERN (sym->etype) && sym->ival)
1194 werror (E_EXTERN_INIT, sym->name);
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);
1214 /* automatic symbols cannot be given */
1215 /* an absolute address ignore it */
1217 SPEC_ABSA (sym->etype) &&
1218 (options.stackAuto || reentrant))
1220 werror (E_AUTO_ABSA, sym->name);
1221 SPEC_ABSA (sym->etype) = 0;
1224 /* arrays & pointers cannot be defined for bits */
1225 /* SBITS or SFRs or BIT */
1226 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1227 (SPEC_NOUN (sym->etype) == V_BIT ||
1228 SPEC_NOUN (sym->etype) == V_SBIT ||
1229 SPEC_SCLS (sym->etype) == S_SFR))
1230 werror (E_BIT_ARRAY, sym->name);
1232 /* if this is a bit|sbit then set length & start */
1233 if (SPEC_NOUN (sym->etype) == V_BIT ||
1234 SPEC_NOUN (sym->etype) == V_SBIT)
1236 SPEC_BLEN (sym->etype) = 1;
1237 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);
1252 /* if parameter or local variable then change */
1253 /* the storage class to reflect where the var will go */
1254 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1255 !IS_STATIC(sym->etype))
1257 if (options.stackAuto || (currFunc && IS_RENT (currFunc->etype)))
1259 SPEC_SCLS (sym->etype) = (options.useXstack ?
1260 S_XSTACK : S_STACK);
1264 /* hack-o-matic! I see no reason why the useXstack option should ever
1265 * control this allcoation, but the code was originally that way, and
1266 * changing it for non-390 ports breaks the compiler badly.
1268 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1269 SPEC_SCLS (sym->etype) = (useXdata ?
1275 /*------------------------------------------------------------------*/
1276 /* changePointer - change pointer to functions */
1277 /*------------------------------------------------------------------*/
1279 changePointer (symbol * sym)
1283 /* go thru the chain of declarations */
1284 /* if we find a pointer to a function */
1285 /* unconditionally change it to a ptr */
1287 for (p = sym->type; p; p = p->next)
1289 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1290 DCL_TYPE (p) = GPOINTER;
1291 if (IS_PTR (p) && IS_FUNC (p->next))
1292 DCL_TYPE (p) = CPOINTER;
1296 /*------------------------------------------------------------------*/
1297 /* checkDecl - does semantic validation of a declaration */
1298 /*------------------------------------------------------------------*/
1300 checkDecl (symbol * sym, int isProto)
1303 checkSClass (sym, isProto); /* check the storage class */
1304 changePointer (sym); /* change pointers if required */
1306 /* if this is an array without any dimension
1307 then update the dimension from the initial value */
1308 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1309 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1314 /*------------------------------------------------------------------*/
1315 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1316 /*------------------------------------------------------------------*/
1318 copyLinkChain (sym_link * p)
1320 sym_link *head, *curr, *loop;
1323 head = loop = (curr ? newLink () : (void *) NULL);
1326 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1327 loop->next = (curr->next ? newLink () : (void *) NULL);
1336 /*------------------------------------------------------------------*/
1337 /* cleanUpBlock - cleansup the symbol table specified for all the */
1338 /* symbols in the given block */
1339 /*------------------------------------------------------------------*/
1341 cleanUpBlock (bucket ** table, int block)
1346 /* go thru the entire table */
1347 for (i = 0; i < 256; i++)
1349 for (chain = table[i]; chain; chain = chain->next)
1351 if (chain->block >= block)
1353 deleteSym (table, chain->sym, chain->name);
1359 /*------------------------------------------------------------------*/
1360 /* cleanUpLevel - cleansup the symbol table specified for all the */
1361 /* symbols in the given level */
1362 /*------------------------------------------------------------------*/
1364 cleanUpLevel (bucket ** table, int level)
1369 /* go thru the entire table */
1370 for (i = 0; i < 256; i++)
1372 for (chain = table[i]; chain; chain = chain->next)
1374 if (chain->level >= level)
1376 deleteSym (table, chain->sym, chain->name);
1382 /*------------------------------------------------------------------*/
1383 /* computeType - computes the resultant type from two types */
1384 /*------------------------------------------------------------------*/
1386 computeType (sym_link * type1, sym_link * type2)
1390 sym_link *etype1 = getSpec (type1);
1391 sym_link *etype2 = getSpec (type2);
1393 /* if one of them is a float then result is a float */
1394 /* here we assume that the types passed are okay */
1395 /* and can be cast to one another */
1396 /* which ever is greater in size */
1397 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1398 rType = newFloatLink ();
1400 /* if only one of them is a bit variable
1401 then the other one prevails */
1402 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1403 rType = copyLinkChain (type2);
1404 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1405 rType = copyLinkChain (type1);
1407 /* if one of them is a pointer then that
1410 rType = copyLinkChain (type1);
1411 else if (IS_PTR (type2))
1412 rType = copyLinkChain (type2);
1413 else if (getSize (type1) > getSize (type2))
1414 rType = copyLinkChain (type1);
1416 rType = copyLinkChain (type2);
1418 reType = getSpec (rType);
1420 /* if either of them unsigned then make this unsigned */
1421 if ((SPEC_USIGN (etype1) || SPEC_USIGN (etype2)) && !IS_FLOAT (reType))
1422 SPEC_USIGN (reType) = 1;
1424 /* if result is a literal then make not so */
1425 if (IS_LITERAL (reType))
1426 SPEC_SCLS (reType) = S_REGISTER;
1431 /*------------------------------------------------------------------*/
1432 /* compareType - will do type check return 1 if match */
1433 /*------------------------------------------------------------------*/
1435 compareType (sym_link * dest, sym_link * src)
1446 /* if dest is a declarator then */
1451 if (DCL_TYPE (src) == DCL_TYPE (dest))
1452 return compareType (dest->next, src->next);
1453 else if (IS_PTR (src) && IS_PTR (dest))
1455 else if (IS_PTR (dest) && IS_ARRAY (src))
1457 else if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1458 return -1 * compareType (dest->next, src);
1462 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1468 /* if one is a specifier and the other is not */
1469 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1470 (IS_SPEC (dest) && !IS_SPEC (src)))
1473 /* if one of them is a void then ok */
1474 if (SPEC_NOUN (dest) == V_VOID &&
1475 SPEC_NOUN (src) != V_VOID)
1478 if (SPEC_NOUN (dest) != V_VOID &&
1479 SPEC_NOUN (src) == V_VOID)
1482 /* if they are both bitfields then if the lengths
1483 and starts don't match */
1484 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1485 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1486 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1489 /* it is a specifier */
1490 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1492 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1493 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1494 getSize (dest) == getSize (src))
1496 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1501 else if (IS_STRUCT (dest))
1503 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1508 if (SPEC_LONG (dest) != SPEC_LONG (src))
1511 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1517 /*------------------------------------------------------------------*/
1518 /* inCalleeSaveList - return 1 if found in callee save list */
1519 /*------------------------------------------------------------------*/
1521 inCalleeSaveList (char *s)
1525 for (i = 0; options.calleeSaves[i]; i++)
1526 if (strcmp (options.calleeSaves[i], s) == 0)
1532 /*-----------------------------------------------------------------*/
1533 /* aggregateArgToPointer: change an agggregate type function */
1534 /* argument to a pointer to that type. */
1535 /*-----------------------------------------------------------------*/
1537 aggregateArgToPointer (value * val)
1539 if (IS_AGGREGATE (val->type))
1541 /* if this is a structure */
1542 /* then we need to add a new link */
1543 if (IS_STRUCT (val->type))
1545 /* first lets add DECLARATOR type */
1546 sym_link *p = val->type;
1548 werror (W_STRUCT_AS_ARG, val->name);
1549 val->type = newLink ();
1550 val->type->next = p;
1553 /* change to a pointer depending on the */
1554 /* storage class specified */
1555 switch (SPEC_SCLS (val->etype))
1558 DCL_TYPE (val->type) = IPOINTER;
1561 DCL_TYPE (val->type) = PPOINTER;
1564 if (TARGET_IS_DS390)
1566 /* The AUTO and REGISTER classes should probably
1567 * also become generic pointers, but I haven't yet
1568 * devised a test case for that.
1570 DCL_TYPE (val->type) = GPOINTER;
1577 DCL_TYPE (val->type) = POINTER;
1580 DCL_TYPE (val->type) = CPOINTER;
1583 DCL_TYPE (val->type) = FPOINTER;
1586 DCL_TYPE (val->type) = EEPPOINTER;
1589 DCL_TYPE (val->type) = GPOINTER;
1592 /* is there is a symbol associated then */
1593 /* change the type of the symbol as well */
1596 val->sym->type = copyLinkChain (val->type);
1597 val->sym->etype = getSpec (val->sym->type);
1601 /*------------------------------------------------------------------*/
1602 /* checkFunction - does all kinds of check on a function */
1603 /*------------------------------------------------------------------*/
1605 checkFunction (symbol * sym)
1608 value *exargs, *acargs;
1612 if (getenv("DEBUG_SANITY")) {
1613 fprintf (stderr, "checkFunction: %s ", sym->name);
1616 /* make sure the type is complete and sane */
1617 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1619 /* if not type then some kind of error */
1623 /* if the function has no type then make it return int */
1624 if (!sym->type->next)
1625 sym->type->next = sym->etype = newIntLink ();
1627 /* function cannot return aggregate */
1628 if (IS_AGGREGATE (sym->type->next))
1630 werror (E_FUNC_AGGR, sym->name);
1634 /* function cannot return bit */
1635 if (IS_BITVAR (sym->type->next))
1637 werror (E_FUNC_BIT, sym->name);
1641 /* check if this function is defined as calleeSaves
1642 then mark it as such */
1643 sym->calleeSave = inCalleeSaveList (sym->name);
1645 /* if interrupt service routine */
1646 /* then it cannot have arguments */
1647 if (sym->args && IS_ISR (sym->etype) && !IS_VOID (sym->args->type))
1649 werror (E_INT_ARGS, sym->name);
1653 if (!(csym = findSym (SymbolTab, sym, sym->name)))
1654 return 1; /* not defined nothing more to check */
1656 /* check if body already present */
1657 if (csym && csym->fbody)
1659 werror (E_FUNC_BODY, sym->name);
1663 /* check the return value type */
1664 if (compareType (csym->type, sym->type) <= 0)
1666 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1667 werror (E_CONTINUE, "previous definition type ");
1668 printTypeChain (csym->type, stderr);
1669 fprintf (stderr, "\n");
1670 werror (E_CONTINUE, "current definition type ");
1671 printTypeChain (sym->type, stderr);
1672 fprintf (stderr, "\n");
1676 if (SPEC_INTRTN (csym->etype) != SPEC_INTRTN (sym->etype))
1678 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1681 if (SPEC_BANK (csym->etype) != SPEC_BANK (sym->etype))
1683 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1686 if (SPEC_NAKED (csym->etype) != SPEC_NAKED (sym->etype))
1688 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1691 /* compare expected agrs with actual args */
1692 exargs = csym->args;
1695 /* for all the expected args do */
1698 exargs = exargs->next, acargs = acargs->next, argCnt++)
1700 if (getenv("DEBUG_SANITY")) {
1701 fprintf (stderr, "checkFunction: %s ", exargs->name);
1703 /* make sure the type is complete and sane */
1704 checkTypeSanity(exargs->etype, exargs->name);
1706 /* If the actual argument is an array, any prototype
1707 * will have modified it to a pointer. Duplicate that
1710 if (IS_AGGREGATE (acargs->type))
1712 checkValue = copyValue (acargs);
1713 aggregateArgToPointer (checkValue);
1717 checkValue = acargs;
1720 if (compareType (exargs->type, checkValue->type) <= 0)
1722 werror (E_ARG_TYPE, argCnt);
1727 /* if one them ended we have a problem */
1728 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1729 (!exargs && acargs && !IS_VOID (acargs->type)))
1730 werror (E_ARG_COUNT);
1732 /* replace with this defition */
1733 sym->cdef = csym->cdef;
1734 deleteSym (SymbolTab, csym, csym->name);
1735 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1736 if (IS_EXTERN (csym->etype) && !
1737 IS_EXTERN (sym->etype))
1739 addSet (&publics, sym);
1744 /*-----------------------------------------------------------------*/
1745 /* processFuncArgs - does some processing with function args */
1746 /*-----------------------------------------------------------------*/
1748 processFuncArgs (symbol * func, int ignoreName)
1753 /* if this function has variable argument list */
1754 /* then make the function a reentrant one */
1756 SPEC_RENT (func->etype) = 1;
1758 /* check if this function is defined as calleeSaves
1759 then mark it as such */
1760 func->calleeSave = inCalleeSaveList (func->name);
1762 val = func->args; /* loop thru all the arguments */
1764 /* if it is void then remove parameters */
1765 if (val && IS_VOID (val->type))
1771 /* reset regparm for the port */
1772 (*port->reset_regparms) ();
1773 /* if any of the arguments is an aggregate */
1774 /* change it to pointer to the same type */
1777 /* mark it as a register parameter if
1778 the function does not have VA_ARG
1779 and as port dictates */
1780 if (!func->hasVargs &&
1781 (*port->reg_parm) (val->type))
1783 SPEC_REGPARM (val->etype) = 1;
1786 if (IS_AGGREGATE (val->type))
1788 aggregateArgToPointer (val);
1794 /* if this is an internal generated function call */
1796 /* ignore --stack-auto for this one, we don't know how it is compiled */
1797 /* simply trust on --int-long-reent or --float-reent */
1798 if (IS_RENT(func->etype)) {
1802 /* if this function is reentrant or */
1803 /* automatics r 2b stacked then nothing */
1804 if (IS_RENT (func->etype) || options.stackAuto)
1813 /* if a symbolname is not given */
1814 /* synthesize a variable name */
1818 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1819 val->sym = newSymbol (val->name, 1);
1820 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1821 val->sym->type = copyLinkChain (val->type);
1822 val->sym->etype = getSpec (val->sym->type);
1823 val->sym->_isparm = 1;
1824 strcpy (val->sym->rname, val->name);
1825 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1826 SPEC_STAT (func->etype);
1827 addSymChain (val->sym);
1830 else /* symbol name given create synth name */
1833 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1834 strcpy (val->sym->rname, val->name);
1835 val->sym->_isparm = 1;
1836 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1837 (options.model != MODEL_SMALL ? xdata : data);
1838 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1839 SPEC_STAT (func->etype);
1845 /*-----------------------------------------------------------------*/
1846 /* isSymbolEqual - compares two symbols return 1 if they match */
1847 /*-----------------------------------------------------------------*/
1849 isSymbolEqual (symbol * dest, symbol * src)
1851 /* if pointers match then equal */
1855 /* if one of them is null then don't match */
1859 /* if both of them have rname match on rname */
1860 if (dest->rname[0] && src->rname[0])
1861 return (!strcmp (dest->rname, src->rname));
1863 /* otherwise match on name */
1864 return (!strcmp (dest->name, src->name));
1867 void PT(sym_link *type)
1869 printTypeChain(type,0);
1871 /*-----------------------------------------------------------------*/
1872 /* printTypeChain - prints the type chain in human readable form */
1873 /*-----------------------------------------------------------------*/
1875 printTypeChain (sym_link * type, FILE * of)
1889 if (DCL_PTR_VOLATILE(type)) {
1890 fprintf (of, "volatile ");
1892 switch (DCL_TYPE (type))
1895 fprintf (of, "function ");
1898 fprintf (of, "_generic * ");
1899 if (DCL_PTR_CONST (type))
1900 fprintf (of, "const ");
1903 fprintf (of, "_code * ");
1904 if (DCL_PTR_CONST (type))
1905 fprintf (of, "const ");
1908 fprintf (of, "_far * ");
1909 if (DCL_PTR_CONST (type))
1910 fprintf (of, "const ");
1913 fprintf (of, "_eeprom * ");
1914 if (DCL_PTR_CONST (type))
1915 fprintf (of, "const ");
1919 fprintf (of, "_near * ");
1920 if (DCL_PTR_CONST (type))
1921 fprintf (of, "const ");
1924 fprintf (of, "_idata *");
1925 if (DCL_PTR_CONST (type))
1926 fprintf (of, "const ");
1929 fprintf (of, "_pdata *");
1930 if (DCL_PTR_CONST (type))
1931 fprintf (of, "const ");
1934 fprintf (of, " _unkown *");
1935 if (DCL_PTR_CONST (type))
1936 fprintf (of, "const ");
1939 fprintf (of, "array of ");
1945 if (SPEC_VOLATILE (type))
1946 fprintf (of, "volatile ");
1947 if (SPEC_USIGN (type))
1948 fprintf (of, "unsigned ");
1949 if (SPEC_CONST (type))
1950 fprintf (of, "const ");
1952 switch (SPEC_NOUN (type))
1956 fprintf (of, "long ");
1957 fprintf (of, "int ");
1961 fprintf (of, "char ");
1965 fprintf (of, "void ");
1969 fprintf (of, "float ");
1973 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
1977 fprintf (of, "sbit ");
1981 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
1985 fprintf (of, "double ");
1989 fprintf (of, "unknown type ");
1999 /*-----------------------------------------------------------------*/
2000 /* cdbTypeInfo - print the type information for debugger */
2001 /*-----------------------------------------------------------------*/
2003 cdbTypeInfo (sym_link * type, FILE * of)
2005 fprintf (of, "{%d}", getSize (type));
2010 switch (DCL_TYPE (type))
2013 fprintf (of, "DF,");
2016 fprintf (of, "DG,");
2019 fprintf (of, "DC,");
2022 fprintf (of, "DX,");
2025 fprintf (of, "DD,");
2028 fprintf (of, "DI,");
2031 fprintf (of, "DP,");
2034 fprintf (of, "DA,");
2037 fprintf (of, "DA%d,", DCL_ELEM (type));
2045 switch (SPEC_NOUN (type))
2067 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2075 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2082 if (SPEC_USIGN (type))
2090 /*-----------------------------------------------------------------*/
2091 /* cdbSymbol - prints a symbol & its type information for debugger */
2092 /*-----------------------------------------------------------------*/
2094 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2106 fprintf (of, "S:"); /* symbol record */
2107 /* if this is not a structure symbol then
2108 we need to figure out the scope information */
2114 if (IS_STATIC (sym->etype))
2115 fprintf (of, "F%s$", moduleName); /* scope is file */
2117 fprintf (of, "G$"); /* scope is global */
2120 /* symbol is local */
2121 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2124 fprintf (of, "S$"); /* scope is structure */
2126 /* print the name, & mangled name */
2127 fprintf (of, "%s$%d$%d(", sym->name,
2128 sym->level, sym->block);
2130 cdbTypeInfo (sym->type, of);
2133 /* print the address space */
2134 map = SPEC_OCLS (sym->etype);
2135 fprintf (of, "%c,%d,%d",
2136 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2138 /* if assigned to registers then output register names */
2139 /* if this is a function then print
2140 if is it an interrupt routine & interrupt number
2141 and the register bank it is using */
2143 fprintf (of, ",%d,%d,%d", SPEC_INTRTN (sym->etype),
2144 SPEC_INTN (sym->etype), SPEC_BANK (sym->etype));
2145 /* alternate location to find this symbol @ : eg registers
2152 /*-----------------------------------------------------------------*/
2153 /* cdbStruct - print a structure for debugger */
2154 /*-----------------------------------------------------------------*/
2156 cdbStruct (structdef * sdef, int block, FILE * of,
2157 int inStruct, char *tag)
2162 /* if block # then must have function scope */
2163 fprintf (of, "F%s$", moduleName);
2164 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2165 for (sym = sdef->fields; sym; sym = sym->next)
2167 fprintf (of, "({%d}", sym->offset);
2168 cdbSymbol (sym, of, TRUE, FALSE);
2176 /*------------------------------------------------------------------*/
2177 /* cdbStructBlock - calls struct printing for a blcks */
2178 /*------------------------------------------------------------------*/
2180 cdbStructBlock (int block, FILE * of)
2183 bucket **table = StructTab;
2187 /* go thru the entire table */
2188 for (i = 0; i < 256; i++)
2190 for (chain = table[i]; chain; chain = chain->next)
2192 if (chain->block >= block)
2194 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2200 /*-----------------------------------------------------------------*/
2201 /* powof2 - returns power of two for the number if number is pow 2 */
2202 /*-----------------------------------------------------------------*/
2204 powof2 (unsigned long num)
2217 if (n1s > 1 || nshifts == 0)
2233 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2234 symbol *__muldiv[3][3][2];
2235 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2236 sym_link *__multypes[3][2];
2237 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2238 symbol *__conv[2][3][2];
2239 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2240 symbol *__rlrr[2][3][2];
2242 sym_link *floatType;
2245 _mangleFunctionName(char *in)
2247 if (port->getMangledFunctionName)
2249 return port->getMangledFunctionName(in);
2257 /*-----------------------------------------------------------------*/
2258 /* initCSupport - create functions for C support routines */
2259 /*-----------------------------------------------------------------*/
2263 const char *smuldivmod[] =
2267 const char *sbwd[] =
2269 "char", "int", "long"
2275 const char *srlrr[] =
2280 int bwd, su, muldivmod, tofrom, rlrr;
2282 floatType = newFloatLink ();
2284 for (bwd = 0; bwd < 3; bwd++)
2301 __multypes[bwd][0] = l;
2302 __multypes[bwd][1] = copyLinkChain (l);
2303 SPEC_USIGN (__multypes[bwd][1]) = 1;
2306 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2307 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2308 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2309 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2310 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2311 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2312 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2313 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2314 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2315 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2317 for (tofrom = 0; tofrom < 2; tofrom++)
2319 for (bwd = 0; bwd < 3; bwd++)
2321 for (su = 0; su < 2; su++)
2325 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2326 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2330 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2331 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2337 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2339 for (bwd = 0; bwd < 3; bwd++)
2341 for (su = 0; su < 2; su++)
2343 sprintf (buffer, "_%s%s%s",
2344 smuldivmod[muldivmod],
2347 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2348 SPEC_NONBANKED (__muldiv[muldivmod][bwd][su]->etype) = 1;
2353 for (rlrr = 0; rlrr < 2; rlrr++)
2355 for (bwd = 0; bwd < 3; bwd++)
2357 for (su = 0; su < 2; su++)
2359 sprintf (buffer, "_%s%s%s",
2363 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2364 SPEC_NONBANKED (__rlrr[rlrr][bwd][su]->etype) = 1;