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
220 if (strcmp (bp->name, sym->name) == 0 && bp->level <= sym->level)
222 /* if this is parameter then nothing else need to be checked */
223 if (((symbol *) (bp->sym))->_isparm)
225 /* if levels match then block numbers should also match */
226 if (bp->level && bp->level == sym->level && bp->block == sym->block)
228 /* if levels don't match then we are okay */
229 if (bp->level && bp->level != sym->level && bp->block <= sym->block)
231 /* if this is a global variable then we are ok too */
239 return (void *) NULL;
242 /*-----------------------------------------------------------------*/
243 /* findSymWithBlock - finds a symbol with name in with a block */
244 /*-----------------------------------------------------------------*/
246 findSymWithBlock (bucket ** stab, symbol * sym, int block)
250 bp = stab[hashKey (sym->name)];
253 if (strcmp (bp->name, sym->name) == 0 &&
259 return (bp ? bp->sym : (void *) NULL);
262 /*------------------------------------------------------------------*/
263 /* newSymbol () - returns a new pointer to a symbol */
264 /*------------------------------------------------------------------*/
266 newSymbol (char *name, int scope)
270 sym = Safe_calloc (1, sizeof (symbol));
272 strcpy (sym->name, name); /* copy the name */
273 sym->level = scope; /* set the level */
274 sym->block = currBlockno;
275 sym->lineDef = yylineno; /* set the line number */
279 /*------------------------------------------------------------------*/
280 /* newLink - creates a new link (declarator,specifier) */
281 /*------------------------------------------------------------------*/
287 p = Safe_calloc (1, sizeof (sym_link));
292 /*------------------------------------------------------------------*/
293 /* newStruct - creats a new structdef from the free list */
294 /*------------------------------------------------------------------*/
296 newStruct (char *tag)
300 s = Safe_calloc (1, sizeof (structdef));
302 strcpy (s->tag, tag); /* copy the tag */
306 /*------------------------------------------------------------------*/
307 /* pointerTypes - do the computation for the pointer types */
308 /*------------------------------------------------------------------*/
310 pointerTypes (sym_link * ptr, sym_link * type)
315 /* find the first pointer type */
316 while (ptr && !IS_PTR (ptr))
319 /* could not find it */
320 if (!ptr || IS_SPEC (ptr))
323 if (IS_PTR(ptr) && DCL_TYPE(ptr)!=UPOINTER) {
324 pointerTypes (ptr->next, type);
328 /* change the pointer type depending on the
329 storage class of the type */
332 DCL_PTR_CONST (ptr) = SPEC_CONST (type);
333 DCL_PTR_VOLATILE (ptr) = SPEC_VOLATILE (type);
334 switch (SPEC_SCLS (type))
337 DCL_TYPE (ptr) = FPOINTER;
340 DCL_TYPE (ptr) = IPOINTER;
343 DCL_TYPE (ptr) = PPOINTER;
346 DCL_TYPE (ptr) = POINTER;
349 DCL_PTR_CONST (ptr) = port->mem.code_ro;
350 DCL_TYPE (ptr) = CPOINTER;
353 DCL_TYPE (ptr) = EEPPOINTER;
356 DCL_TYPE (ptr) = GPOINTER;
359 /* the storage class of type ends here */
362 SPEC_VOLATILE (type) = 0;
365 /* now change all the remaining unknown pointers
366 to generic pointers */
369 if (!IS_SPEC (ptr) && DCL_TYPE (ptr) == UPOINTER)
370 DCL_TYPE (ptr) = GPOINTER;
374 /* same for the type although it is highly unlikely that
375 type will have a pointer */
378 if (!IS_SPEC (type) && DCL_TYPE (type) == UPOINTER)
379 DCL_TYPE (type) = GPOINTER;
385 /*------------------------------------------------------------------*/
386 /* addDecl - adds a declarator @ the end of a chain */
387 /*------------------------------------------------------------------*/
389 addDecl (symbol * sym, int type, sym_link * p)
395 /* if we are passed a link then set head & tail */
404 head = tail = newLink ();
405 DCL_TYPE (head) = type;
408 /* if this is the first entry */
416 if (IS_SPEC (sym->etype) && IS_SPEC (head) && head == tail)
418 sym->etype = mergeSpec (sym->etype, head, sym->name);
422 if (IS_SPEC (sym->etype) && !IS_SPEC (head) && head == tail)
425 while (t->next != sym->etype)
428 tail->next = sym->etype;
432 sym->etype->next = head;
438 /* if the type is an unknown pointer and has
439 a tspec then take the storage class const & volatile
440 attribute from the tspec & make it those of this
444 //DCL_TYPE (p) == UPOINTER &&
447 if (!IS_SPEC (sym->etype))
449 sym->etype = sym->etype->next = newLink ();
450 sym->etype->class = SPECIFIER;
452 SPEC_SCLS (sym->etype) = SPEC_SCLS (DCL_TSPEC (p));
453 SPEC_CONST (sym->etype) = SPEC_CONST (DCL_TSPEC (p));
454 SPEC_VOLATILE (sym->etype) = SPEC_VOLATILE (DCL_TSPEC (p));
455 DCL_TSPEC (p) = NULL;
460 /*------------------------------------------------------------------
461 checkTypeSanity: prevent the user from doing e.g.:
463 ------------------------------------------------------------------*/
464 void checkTypeSanity(sym_link *etype, char *name) {
468 if (getenv("DEBUG_SANITY")) {
469 fprintf (stderr, "sanity check skipped for %s (etype==0)\n", name);
474 if (!IS_SPEC(etype)) {
475 if (getenv("DEBUG_SANITY")) {
476 fprintf (stderr, "sanity check skipped for %s (!IS_SPEC)\n", name);
481 noun=nounName(etype);
483 if (getenv("DEBUG_SANITY")) {
484 fprintf (stderr, "checking sanity for %s %x\n", name, (int)etype);
487 if ((SPEC_NOUN(etype)==V_CHAR ||
488 SPEC_NOUN(etype)==V_FLOAT ||
489 SPEC_NOUN(etype)==V_DOUBLE ||
490 SPEC_NOUN(etype)==V_VOID) &&
491 (etype->select.s._short || SPEC_LONG(etype))) {
492 // long or short for char float double or void
493 werror (E_LONG_OR_SHORT_INVALID, noun, name);
495 if ((SPEC_NOUN(etype)==V_FLOAT ||
496 SPEC_NOUN(etype)==V_DOUBLE ||
497 SPEC_NOUN(etype)==V_VOID) &&
498 (etype->select.s._signed || SPEC_USIGN(etype))) {
499 // signed or unsigned for float double or void
500 werror (E_SIGNED_OR_UNSIGNED_INVALID, noun, name);
503 // special case for "short"
504 if (etype->select.s._short) {
505 SPEC_NOUN(etype) = options.shortis8bits ? V_CHAR : V_INT;
506 etype->select.s._short = 0;
510 "const a;" or "data b;" or "signed s" or "long l"
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, char *name)
534 sym_link *symlink=dest;
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
556 if (!IS_SPEC(dest) || !IS_SPEC(src)) {
557 werror (E_INTERNAL_ERROR, __FILE__, __LINE__, "cannot merge declarator");
561 if (getenv("DEBUG_mergeSpec")) {
562 fprintf (stderr, "mergeSpec: \"%s\"\n", name);
565 if (SPEC_NOUN(src)) {
566 if (!SPEC_NOUN(dest)) {
567 SPEC_NOUN(dest)=SPEC_NOUN(src);
569 /* we shouldn't redeclare the type */
570 if (getenv("DEBUG_SANITY")) {
571 fprintf (stderr, "mergeSpec: ");
573 werror(E_TWO_OR_MORE_DATA_TYPES, name);
577 if (SPEC_SCLS(src)) {
578 /* if destination has no storage class */
579 if (!SPEC_SCLS (dest) || SPEC_SCLS(dest)==S_REGISTER) {
580 SPEC_SCLS (dest) = SPEC_SCLS (src);
582 if (getenv("DEBUG_SANITY")) {
583 fprintf (stderr, "mergeSpec: ");
585 werror(E_TWO_OR_MORE_STORAGE_CLASSES, name);
589 /* copy all the specifications */
591 // we really should do:
593 if (SPEC_what(src)) {
594 if (SPEC_what(dest)) {
595 werror(W_DUPLICATE_SPEC, "what");
597 SPEC_what(dst)|=SPEC_what(src);
600 // but there are more important thing right now
602 SPEC_LONG (dest) |= SPEC_LONG (src);
603 dest->select.s._short|=src->select.s._short;
604 SPEC_USIGN (dest) |= SPEC_USIGN (src);
605 dest->select.s._signed|=src->select.s._signed;
606 SPEC_STAT (dest) |= SPEC_STAT (src);
607 SPEC_EXTR (dest) |= SPEC_EXTR (src);
608 SPEC_ABSA (dest) |= SPEC_ABSA (src);
609 SPEC_RENT (dest) |= SPEC_RENT (src);
610 SPEC_INTN (dest) |= SPEC_INTN (src);
611 SPEC_BANK (dest) |= SPEC_BANK (src);
612 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
613 SPEC_CRTCL (dest) |= SPEC_CRTCL (src);
614 SPEC_ADDR (dest) |= SPEC_ADDR (src);
615 SPEC_OCLS (dest) = SPEC_OCLS (src);
616 SPEC_BLEN (dest) |= SPEC_BLEN (src);
617 SPEC_BSTR (dest) |= SPEC_BSTR (src);
618 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
619 SPEC_NONBANKED (dest) |= SPEC_NONBANKED (src);
620 SPEC_NAKED (dest) |= SPEC_NAKED (src);
622 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
623 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
628 /*------------------------------------------------------------------*/
629 /* cloneSpec - copies the entire spec and returns a new spec */
630 /*------------------------------------------------------------------*/
632 cloneSpec (sym_link * src)
636 /* go thru chain till we find the specifier */
637 while (src && src->class != SPECIFIER)
641 memcpy (spec, src, sizeof (sym_link));
645 /*------------------------------------------------------------------*/
646 /* genSymName - generates and returns a name used for anonymous vars */
647 /*------------------------------------------------------------------*/
649 genSymName (int level)
651 static int gCount = 0;
652 static char gname[SDCC_NAME_MAX + 1];
654 sprintf (gname, "__%04d%04d", level, gCount++);
658 /*------------------------------------------------------------------*/
659 /* getSpec - returns the specifier part from a declaration chain */
660 /*------------------------------------------------------------------*/
662 getSpec (sym_link * p)
667 while (p && !(IS_SPEC (p)))
673 /*------------------------------------------------------------------*/
674 /* newCharLink() - creates an char type */
675 /*------------------------------------------------------------------*/
682 p->class = SPECIFIER;
683 SPEC_NOUN (p) = V_CHAR;
688 /*------------------------------------------------------------------*/
689 /* newFloatLink - a new Float type */
690 /*------------------------------------------------------------------*/
697 p->class = SPECIFIER;
698 SPEC_NOUN (p) = V_FLOAT;
703 /*------------------------------------------------------------------*/
704 /* newLongLink() - new long type */
705 /*------------------------------------------------------------------*/
712 p->class = SPECIFIER;
713 SPEC_NOUN (p) = V_INT;
719 /*------------------------------------------------------------------*/
720 /* newIntLink() - creates an int type */
721 /*------------------------------------------------------------------*/
728 p->class = SPECIFIER;
729 SPEC_NOUN (p) = V_INT;
734 /*------------------------------------------------------------------*/
735 /* getSize - returns size of a type chain in bits */
736 /*------------------------------------------------------------------*/
738 getSize (sym_link * p)
740 /* if nothing return 0 */
744 { /* if this is the specifier then */
745 switch (SPEC_NOUN (p))
746 { /* depending on the specifier type */
748 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
756 return SPEC_STRUCT (p)->size;
762 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
768 /* this is a specifier */
769 switch (DCL_TYPE (p))
774 return DCL_ELEM (p) * getSize (p->next);
791 /*------------------------------------------------------------------*/
792 /* bitsForType - returns # of bits required to store this type */
793 /*------------------------------------------------------------------*/
795 bitsForType (sym_link * p)
797 /* if nothing return 0 */
802 { /* if this is the specifier then */
804 switch (SPEC_NOUN (p))
805 { /* depending on the specifier type */
807 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
809 return FLOATSIZE * 8;
815 return SPEC_STRUCT (p)->size * 8;
821 return SPEC_BLEN (p);
827 /* this is a specifier */
828 switch (DCL_TYPE (p))
833 return DCL_ELEM (p) * getSize (p->next) * 8;
837 return (PTRSIZE * 8);
841 return (FPTRSIZE * 8);
843 return (GPTRSIZE * 8);
850 /*------------------------------------------------------------------*/
851 /* copySymbolChain - copies a symbol chain */
852 /*------------------------------------------------------------------*/
854 copySymbolChain (symbol * src)
861 dest = copySymbol (src);
862 dest->next = copySymbolChain (src->next);
866 /*------------------------------------------------------------------*/
867 /* copySymbol - makes a copy of a symbol */
868 /*------------------------------------------------------------------*/
870 copySymbol (symbol * src)
877 dest = newSymbol (src->name, src->level);
878 memcpy (dest, src, sizeof (symbol));
879 dest->level = src->level;
880 dest->block = src->block;
881 dest->ival = copyIlist (src->ival);
882 dest->type = copyLinkChain (src->type);
883 dest->etype = getSpec (dest->type);
885 dest->args = copyValueChain (src->args);
886 dest->key = src->key;
887 dest->calleeSave = src->calleeSave;
888 dest->allocreq = src->allocreq;
892 /*------------------------------------------------------------------*/
893 /* reverseSyms - reverses the links for a symbol chain */
894 /*------------------------------------------------------------------*/
896 reverseSyms (symbol * sym)
898 symbol *prev, *curr, *next;
913 sym->next = (void *) NULL;
917 /*------------------------------------------------------------------*/
918 /* reverseLink - reverses the links for a type chain */
919 /*------------------------------------------------------------------*/
921 reverseLink (sym_link * type)
923 sym_link *prev, *curr, *next;
938 type->next = (void *) NULL;
942 /*------------------------------------------------------------------*/
943 /* addSymChain - adds a symbol chain to the symboltable */
944 /*------------------------------------------------------------------*/
946 addSymChain (symbol * symHead)
948 symbol *sym = symHead;
951 for (; sym != NULL; sym = sym->next)
954 checkTypeSanity(sym->etype, sym->name);
956 /* if already exists in the symbol table then check if
957 one of them is an extern definition if yes then
958 then check if the type match, if the types match then
959 delete the current entry and add the new entry */
960 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
961 csym->level == sym->level) {
963 /* one definition extern ? */
964 if (IS_EXTERN (csym->etype) || IS_EXTERN (sym->etype)) {
965 /* do types match ? */
966 if (compareType (csym->type, sym->type) != 1) {
968 werror (E_EXTERN_MISMATCH, csym->name);
971 /* delete current entry */
972 deleteSym (SymbolTab, csym, csym->name);
975 werror (E_DUPLICATE, sym->name);
981 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
986 /*------------------------------------------------------------------*/
987 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
988 /*------------------------------------------------------------------*/
990 funcInChain (sym_link * lnk)
1001 /*------------------------------------------------------------------*/
1002 /* structElemType - returns the type info of a sturct member */
1003 /*------------------------------------------------------------------*/
1005 structElemType (sym_link * stype, value * id, value ** argsp)
1007 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
1008 sym_link *type, *etype;
1009 sym_link *petype = getSpec (stype);
1014 /* look for the id */
1017 if (strcmp (fields->rname, id->name) == 0)
1021 *argsp = fields->args;
1023 type = copyLinkChain (fields->type);
1024 etype = getSpec (type);
1025 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1026 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1029 fields = fields->next;
1031 werror (E_NOT_MEMBER, id->name);
1036 /*------------------------------------------------------------------*/
1037 /* getStructElement - returns element of a tructure definition */
1038 /*------------------------------------------------------------------*/
1040 getStructElement (structdef * sdef, symbol * sym)
1044 for (field = sdef->fields; field; field = field->next)
1045 if (strcmp (field->name, sym->name) == 0)
1048 werror (E_NOT_MEMBER, sym->name);
1050 return sdef->fields;
1053 /*------------------------------------------------------------------*/
1054 /* compStructSize - computes the size of a structure */
1055 /*------------------------------------------------------------------*/
1057 compStructSize (int su, structdef * sdef)
1059 int sum = 0, usum = 0;
1063 /* for the identifiers */
1064 loop = sdef->fields;
1067 /* create the internal name for this variable */
1068 sprintf (loop->rname, "_%s", loop->name);
1069 loop->offset = (su == UNION ? sum = 0 : sum);
1070 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1072 /* if this is a bit field */
1075 /* change it to a unsigned bit */
1076 SPEC_NOUN (loop->etype) = V_BIT;
1077 SPEC_USIGN (loop->etype) = 1;
1078 /* check if this fit into the remaining */
1079 /* bits of this byte else align it to the */
1080 /* next byte boundary */
1081 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1082 SPEC_BSTR (loop->etype) = bitOffset;
1083 if ((bitOffset += (loop->bitVar % 8)) == 8)
1086 else /* does not fit */ {
1088 SPEC_BSTR (loop->etype) = bitOffset;
1089 sum += (loop->bitVar / 8);
1090 bitOffset += (loop->bitVar % 8);
1092 /* if this is the last field then pad */
1093 if (!loop->next && bitOffset && bitOffset != 8) {
1099 checkDecl (loop, 1);
1100 sum += getSize (loop->type);
1103 /* if function then do the arguments for it */
1104 if (funcInChain (loop->type)) {
1105 processFuncArgs (loop, 1);
1110 /* if this is not a bitfield but the */
1111 /* previous one was and did not take */
1112 /* the whole byte then pad the rest */
1113 if ((loop && !loop->bitVar) && bitOffset) {
1118 /* if union then size = sizeof larget field */
1120 usum = max (usum, sum);
1124 return (su == UNION ? usum : sum);
1127 /*------------------------------------------------------------------*/
1128 /* checkSClass - check the storage class specification */
1129 /*------------------------------------------------------------------*/
1131 checkSClass (symbol * sym, int isProto)
1133 if (getenv("DEBUG_SANITY")) {
1134 fprintf (stderr, "checkSClass: %s \n", sym->name);
1136 if (strcmp(sym->name, "_testsGlobal")==0) {
1140 /* type is literal can happen foe enums change
1142 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1143 SPEC_SCLS (sym->etype) = S_AUTO;
1145 /* if sfr or sbit then must also be */
1146 /* volatile the initial value will be xlated */
1147 /* to an absolute address */
1148 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1149 SPEC_SCLS (sym->etype) == S_SFR)
1151 SPEC_VOLATILE (sym->etype) = 1;
1152 /* if initial value given */
1155 SPEC_ABSA (sym->etype) = 1;
1156 SPEC_ADDR (sym->etype) =
1157 (int) list2int (sym->ival);
1162 /* if absolute address given then it mark it as
1164 if (IS_ABSOLUTE (sym->etype))
1165 SPEC_VOLATILE (sym->etype) = 1;
1167 /* global variables declared const put into code */
1168 if (sym->level == 0 &&
1169 SPEC_CONST (sym->etype)) {
1170 SPEC_SCLS (sym->etype) = S_CODE;
1173 /* global variable in code space is a constant */
1174 if (sym->level == 0 &&
1175 SPEC_SCLS (sym->etype) == S_CODE &&
1177 SPEC_CONST (sym->etype) = 1;
1180 /* if bit variable then no storage class can be */
1181 /* specified since bit is already a storage */
1182 if (IS_BITVAR (sym->etype) &&
1183 (SPEC_SCLS (sym->etype) != S_FIXED &&
1184 SPEC_SCLS (sym->etype) != S_SBIT &&
1185 SPEC_SCLS (sym->etype) != S_BIT)
1188 werror (E_BITVAR_STORAGE, sym->name);
1189 SPEC_SCLS (sym->etype) = S_FIXED;
1192 /* extern variables cannot be initialized */
1193 if (IS_EXTERN (sym->etype) && sym->ival)
1195 werror (E_EXTERN_INIT, sym->name);
1199 /* if this is an atomatic symbol */
1200 if (sym->level && (options.stackAuto || reentrant)) {
1201 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1202 SPEC_SCLS (sym->etype) == S_FIXED ||
1203 SPEC_SCLS (sym->etype) == S_REGISTER ||
1204 SPEC_SCLS (sym->etype) == S_STACK ||
1205 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1206 SPEC_SCLS (sym->etype) = S_AUTO;
1208 /* storage class may only be specified for statics */
1209 if (!IS_STATIC(sym->etype)) {
1210 werror (E_AUTO_ASSUMED, sym->name);
1215 /* automatic symbols cannot be given */
1216 /* an absolute address ignore it */
1218 SPEC_ABSA (sym->etype) &&
1219 (options.stackAuto || reentrant))
1221 werror (E_AUTO_ABSA, sym->name);
1222 SPEC_ABSA (sym->etype) = 0;
1225 /* arrays & pointers cannot be defined for bits */
1226 /* SBITS or SFRs or BIT */
1227 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1228 (SPEC_NOUN (sym->etype) == V_BIT ||
1229 SPEC_NOUN (sym->etype) == V_SBIT ||
1230 SPEC_SCLS (sym->etype) == S_SFR))
1231 werror (E_BIT_ARRAY, sym->name);
1233 /* if this is a bit|sbit then set length & start */
1234 if (SPEC_NOUN (sym->etype) == V_BIT ||
1235 SPEC_NOUN (sym->etype) == V_SBIT)
1237 SPEC_BLEN (sym->etype) = 1;
1238 SPEC_BSTR (sym->etype) = 0;
1242 /* variables declared in CODE space must have */
1243 /* initializers if not an extern */
1244 if (SPEC_SCLS (sym->etype) == S_CODE &&
1245 sym->ival == NULL &&
1247 port->mem.code_ro &&
1248 !IS_EXTERN (sym->etype) &&
1249 !funcInChain (sym->type))
1250 werror (E_CODE_NO_INIT, sym->name);
1253 /* if parameter or local variable then change */
1254 /* the storage class to reflect where the var will go */
1255 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1256 !IS_STATIC(sym->etype))
1258 if (options.stackAuto || (currFunc && IS_RENT (currFunc->etype)))
1260 SPEC_SCLS (sym->etype) = (options.useXstack ?
1261 S_XSTACK : S_STACK);
1265 /* hack-o-matic! I see no reason why the useXstack option should ever
1266 * control this allcoation, but the code was originally that way, and
1267 * changing it for non-390 ports breaks the compiler badly.
1269 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1270 SPEC_SCLS (sym->etype) = (useXdata ?
1276 /*------------------------------------------------------------------*/
1277 /* changePointer - change pointer to functions */
1278 /*------------------------------------------------------------------*/
1280 changePointer (symbol * sym)
1284 /* go thru the chain of declarations */
1285 /* if we find a pointer to a function */
1286 /* unconditionally change it to a ptr */
1288 for (p = sym->type; p; p = p->next)
1290 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1291 DCL_TYPE (p) = GPOINTER;
1292 if (IS_PTR (p) && IS_FUNC (p->next))
1293 DCL_TYPE (p) = CPOINTER;
1297 /*------------------------------------------------------------------*/
1298 /* checkDecl - does semantic validation of a declaration */
1299 /*------------------------------------------------------------------*/
1301 checkDecl (symbol * sym, int isProto)
1304 checkSClass (sym, isProto); /* check the storage class */
1305 changePointer (sym); /* change pointers if required */
1307 /* if this is an array without any dimension
1308 then update the dimension from the initial value */
1309 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1310 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1315 /*------------------------------------------------------------------*/
1316 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1317 /*------------------------------------------------------------------*/
1319 copyLinkChain (sym_link * p)
1321 sym_link *head, *curr, *loop;
1324 head = loop = (curr ? newLink () : (void *) NULL);
1327 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1328 loop->next = (curr->next ? newLink () : (void *) NULL);
1337 /*------------------------------------------------------------------*/
1338 /* cleanUpBlock - cleansup the symbol table specified for all the */
1339 /* symbols in the given block */
1340 /*------------------------------------------------------------------*/
1342 cleanUpBlock (bucket ** table, int block)
1347 /* go thru the entire table */
1348 for (i = 0; i < 256; i++)
1350 for (chain = table[i]; chain; chain = chain->next)
1352 if (chain->block >= block)
1354 deleteSym (table, chain->sym, chain->name);
1360 /*------------------------------------------------------------------*/
1361 /* cleanUpLevel - cleansup the symbol table specified for all the */
1362 /* symbols in the given level */
1363 /*------------------------------------------------------------------*/
1365 cleanUpLevel (bucket ** table, int level)
1370 /* go thru the entire table */
1371 for (i = 0; i < 256; i++)
1373 for (chain = table[i]; chain; chain = chain->next)
1375 if (chain->level >= level)
1377 deleteSym (table, chain->sym, chain->name);
1383 /*------------------------------------------------------------------*/
1384 /* computeType - computes the resultant type from two types */
1385 /*------------------------------------------------------------------*/
1387 computeType (sym_link * type1, sym_link * type2)
1391 sym_link *etype1 = getSpec (type1);
1392 sym_link *etype2 = getSpec (type2);
1394 /* if one of them is a float then result is a float */
1395 /* here we assume that the types passed are okay */
1396 /* and can be cast to one another */
1397 /* which ever is greater in size */
1398 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1399 rType = newFloatLink ();
1401 /* if only one of them is a bit variable
1402 then the other one prevails */
1403 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1404 rType = copyLinkChain (type2);
1405 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1406 rType = copyLinkChain (type1);
1408 /* if one of them is a pointer then that
1411 rType = copyLinkChain (type1);
1412 else if (IS_PTR (type2))
1413 rType = copyLinkChain (type2);
1414 else if (getSize (type1) > getSize (type2))
1415 rType = copyLinkChain (type1);
1417 rType = copyLinkChain (type2);
1419 reType = getSpec (rType);
1421 /* if either of them unsigned but not val then make this unsigned */
1422 if (((!IS_LITERAL(type1) && SPEC_USIGN (etype1)) ||
1423 (!IS_LITERAL(type2) && SPEC_USIGN (etype2))) &&
1425 SPEC_USIGN (reType) = 1;
1427 /* if result is a literal then make not so */
1428 if (IS_LITERAL (reType))
1429 SPEC_SCLS (reType) = S_REGISTER;
1434 /*--------------------------------------------------------------------*/
1435 /* compareType - will do type check return 1 if match, -1 if castable */
1436 /*--------------------------------------------------------------------*/
1438 compareType (sym_link * dest, sym_link * src)
1449 /* if dest is a declarator then */
1454 if (DCL_TYPE (src) == DCL_TYPE (dest))
1455 return compareType (dest->next, src->next);
1456 if (IS_PTR (src) && IS_PTR (dest))
1458 if (IS_PTR (dest) && IS_ARRAY (src))
1460 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1461 return -1 * compareType (dest->next, src);
1464 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1470 /* if one is a specifier and the other is not */
1471 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1472 (IS_SPEC (dest) && !IS_SPEC (src)))
1475 /* if one of them is a void then ok */
1476 if (SPEC_NOUN (dest) == V_VOID &&
1477 SPEC_NOUN (src) != V_VOID)
1480 if (SPEC_NOUN (dest) != V_VOID &&
1481 SPEC_NOUN (src) == V_VOID)
1484 /* if they are both bitfields then if the lengths
1485 and starts don't match */
1486 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1487 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1488 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1491 /* it is a specifier */
1492 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1494 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1495 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1496 getSize (dest) == getSize (src))
1498 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1503 else if (IS_STRUCT (dest))
1505 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1510 if (SPEC_LONG (dest) != SPEC_LONG (src))
1513 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1519 /*------------------------------------------------------------------*/
1520 /* inCalleeSaveList - return 1 if found in callee save list */
1521 /*------------------------------------------------------------------*/
1523 inCalleeSaveList (char *s)
1527 for (i = 0; options.calleeSaves[i]; i++)
1528 if (strcmp (options.calleeSaves[i], s) == 0)
1534 /*-----------------------------------------------------------------*/
1535 /* aggregateArgToPointer: change an agggregate type function */
1536 /* argument to a pointer to that type. */
1537 /*-----------------------------------------------------------------*/
1539 aggregateArgToPointer (value * val)
1541 if (IS_AGGREGATE (val->type))
1543 /* if this is a structure */
1544 /* then we need to add a new link */
1545 if (IS_STRUCT (val->type))
1547 /* first lets add DECLARATOR type */
1548 sym_link *p = val->type;
1550 werror (W_STRUCT_AS_ARG, val->name);
1551 val->type = newLink ();
1552 val->type->next = p;
1555 /* change to a pointer depending on the */
1556 /* storage class specified */
1557 switch (SPEC_SCLS (val->etype))
1560 DCL_TYPE (val->type) = IPOINTER;
1563 DCL_TYPE (val->type) = PPOINTER;
1566 if (TARGET_IS_DS390)
1568 /* The AUTO and REGISTER classes should probably
1569 * also become generic pointers, but I haven't yet
1570 * devised a test case for that.
1572 DCL_TYPE (val->type) = GPOINTER;
1579 DCL_TYPE (val->type) = POINTER;
1582 DCL_TYPE (val->type) = CPOINTER;
1585 DCL_TYPE (val->type) = FPOINTER;
1588 DCL_TYPE (val->type) = EEPPOINTER;
1591 DCL_TYPE (val->type) = GPOINTER;
1594 /* is there is a symbol associated then */
1595 /* change the type of the symbol as well */
1598 val->sym->type = copyLinkChain (val->type);
1599 val->sym->etype = getSpec (val->sym->type);
1603 /*------------------------------------------------------------------*/
1604 /* checkFunction - does all kinds of check on a function */
1605 /*------------------------------------------------------------------*/
1607 checkFunction (symbol * sym)
1610 value *exargs, *acargs;
1614 if (getenv("DEBUG_SANITY")) {
1615 fprintf (stderr, "checkFunction: %s ", sym->name);
1618 /* make sure the type is complete and sane */
1619 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1621 /* if not type then some kind of error */
1625 /* if the function has no type then make it return int */
1626 if (!sym->type->next)
1627 sym->type->next = sym->etype = newIntLink ();
1629 /* function cannot return aggregate */
1630 if (IS_AGGREGATE (sym->type->next))
1632 werror (E_FUNC_AGGR, sym->name);
1636 /* function cannot return bit */
1637 if (IS_BITVAR (sym->type->next))
1639 werror (E_FUNC_BIT, sym->name);
1643 /* check if this function is defined as calleeSaves
1644 then mark it as such */
1645 sym->calleeSave = inCalleeSaveList (sym->name);
1647 /* if interrupt service routine */
1648 /* then it cannot have arguments */
1649 if (sym->args && IS_ISR (sym->etype) && !IS_VOID (sym->args->type))
1651 werror (E_INT_ARGS, sym->name);
1655 if (!(csym = findSym (SymbolTab, sym, sym->name)))
1656 return 1; /* not defined nothing more to check */
1658 /* check if body already present */
1659 if (csym && csym->fbody)
1661 werror (E_FUNC_BODY, sym->name);
1665 /* check the return value type */
1666 if (compareType (csym->type, sym->type) <= 0)
1668 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1669 werror (W_CONTINUE, "previous definition type ");
1670 printTypeChain (csym->type, stderr);
1671 fprintf (stderr, "\n");
1672 werror (W_CONTINUE, "current definition type ");
1673 printTypeChain (sym->type, stderr);
1674 fprintf (stderr, "\n");
1678 if (SPEC_INTRTN (csym->etype) != SPEC_INTRTN (sym->etype))
1680 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1683 if (SPEC_BANK (csym->etype) != SPEC_BANK (sym->etype))
1685 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1688 if (SPEC_NAKED (csym->etype) != SPEC_NAKED (sym->etype))
1690 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1693 /* compare expected agrs with actual args */
1694 exargs = csym->args;
1697 /* for all the expected args do */
1700 exargs = exargs->next, acargs = acargs->next, argCnt++)
1702 if (getenv("DEBUG_SANITY")) {
1703 fprintf (stderr, "checkFunction: %s ", exargs->name);
1705 /* make sure the type is complete and sane */
1706 checkTypeSanity(exargs->etype, exargs->name);
1708 /* If the actual argument is an array, any prototype
1709 * will have modified it to a pointer. Duplicate that
1712 if (IS_AGGREGATE (acargs->type))
1714 checkValue = copyValue (acargs);
1715 aggregateArgToPointer (checkValue);
1719 checkValue = acargs;
1722 if (compareType (exargs->type, checkValue->type) <= 0)
1724 werror (E_ARG_TYPE, argCnt);
1729 /* if one them ended we have a problem */
1730 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1731 (!exargs && acargs && !IS_VOID (acargs->type)))
1732 werror (E_ARG_COUNT);
1734 /* replace with this defition */
1735 sym->cdef = csym->cdef;
1736 deleteSym (SymbolTab, csym, csym->name);
1737 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1738 if (IS_EXTERN (csym->etype) && !
1739 IS_EXTERN (sym->etype))
1741 addSet (&publics, sym);
1746 /*-----------------------------------------------------------------*/
1747 /* processFuncArgs - does some processing with function args */
1748 /*-----------------------------------------------------------------*/
1750 processFuncArgs (symbol * func, int ignoreName)
1755 /* if this function has variable argument list */
1756 /* then make the function a reentrant one */
1758 SPEC_RENT (func->etype) = 1;
1760 /* check if this function is defined as calleeSaves
1761 then mark it as such */
1762 func->calleeSave = inCalleeSaveList (func->name);
1764 val = func->args; /* loop thru all the arguments */
1766 /* if it is void then remove parameters */
1767 if (val && IS_VOID (val->type))
1773 /* reset regparm for the port */
1774 (*port->reset_regparms) ();
1775 /* if any of the arguments is an aggregate */
1776 /* change it to pointer to the same type */
1779 /* mark it as a register parameter if
1780 the function does not have VA_ARG
1781 and as port dictates */
1782 if (!func->hasVargs &&
1783 (*port->reg_parm) (val->type))
1785 SPEC_REGPARM (val->etype) = 1;
1788 if (IS_AGGREGATE (val->type))
1790 aggregateArgToPointer (val);
1796 /* if this is an internal generated function call */
1798 /* ignore --stack-auto for this one, we don't know how it is compiled */
1799 /* simply trust on --int-long-reent or --float-reent */
1800 if (IS_RENT(func->etype)) {
1804 /* if this function is reentrant or */
1805 /* automatics r 2b stacked then nothing */
1806 if (IS_RENT (func->etype) || options.stackAuto)
1815 /* if a symbolname is not given */
1816 /* synthesize a variable name */
1820 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1821 val->sym = newSymbol (val->name, 1);
1822 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1823 val->sym->type = copyLinkChain (val->type);
1824 val->sym->etype = getSpec (val->sym->type);
1825 val->sym->_isparm = 1;
1826 strcpy (val->sym->rname, val->name);
1827 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1828 SPEC_STAT (func->etype);
1829 addSymChain (val->sym);
1832 else /* symbol name given create synth name */
1835 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1836 strcpy (val->sym->rname, val->name);
1837 val->sym->_isparm = 1;
1838 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1839 (options.model != MODEL_SMALL ? xdata : data);
1840 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1841 SPEC_STAT (func->etype);
1847 /*-----------------------------------------------------------------*/
1848 /* isSymbolEqual - compares two symbols return 1 if they match */
1849 /*-----------------------------------------------------------------*/
1851 isSymbolEqual (symbol * dest, symbol * src)
1853 /* if pointers match then equal */
1857 /* if one of them is null then don't match */
1861 /* if both of them have rname match on rname */
1862 if (dest->rname[0] && src->rname[0])
1863 return (!strcmp (dest->rname, src->rname));
1865 /* otherwise match on name */
1866 return (!strcmp (dest->name, src->name));
1869 void PT(sym_link *type)
1871 printTypeChain(type,0);
1873 /*-----------------------------------------------------------------*/
1874 /* printTypeChain - prints the type chain in human readable form */
1875 /*-----------------------------------------------------------------*/
1877 printTypeChain (sym_link * start, FILE * of)
1880 sym_link * type, * search;
1888 /* print the chain as it is written in the source: */
1889 /* start with the last entry */
1890 for (type = start; type && type->next; type = type->next)
1896 if (DCL_PTR_VOLATILE (type)) {
1897 fprintf (of, "volatile ");
1899 switch (DCL_TYPE (type))
1902 fprintf (of, "function");
1905 if (DCL_PTR_CONST (type))
1906 fprintf (of, "const ");
1907 fprintf (of, "generic *");
1910 if (DCL_PTR_CONST (type))
1911 fprintf (of, "const ");
1912 fprintf (of, "code *");
1915 if (DCL_PTR_CONST (type))
1916 fprintf (of, "const ");
1917 fprintf (of, "far *");
1920 if (DCL_PTR_CONST (type))
1921 fprintf (of, "const ");
1922 fprintf (of, "eeprom * ");
1926 if (DCL_PTR_CONST (type))
1927 fprintf (of, "const ");
1928 fprintf (of, "near *");
1931 if (DCL_PTR_CONST (type))
1932 fprintf (of, "const ");
1933 fprintf (of, "idata *");
1936 if (DCL_PTR_CONST (type))
1937 fprintf (of, "const ");
1938 fprintf (of, "pdata *");
1941 if (DCL_PTR_CONST (type))
1942 fprintf (of, "const ");
1943 fprintf (of, "unkown *");
1946 fprintf (of, "array of");
1952 if (SPEC_VOLATILE (type))
1953 fprintf (of, "volatile ");
1954 if (SPEC_USIGN (type))
1955 fprintf (of, "unsigned ");
1956 if (SPEC_CONST (type))
1957 fprintf (of, "const ");
1959 switch (SPEC_NOUN (type))
1963 fprintf (of, "long ");
1964 fprintf (of, "int");
1968 fprintf (of, "char");
1972 fprintf (of, "void");
1976 fprintf (of, "float");
1980 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
1984 fprintf (of, "sbit");
1988 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
1992 fprintf (of, "double");
1996 fprintf (of, "unknown type");
2000 /* search entry in list before "type" */
2001 for (search = start; search && search->next != type;)
2002 search = search->next;
2011 /*-----------------------------------------------------------------*/
2012 /* cdbTypeInfo - print the type information for debugger */
2013 /*-----------------------------------------------------------------*/
2015 cdbTypeInfo (sym_link * type, FILE * of)
2017 fprintf (of, "{%d}", getSize (type));
2022 switch (DCL_TYPE (type))
2025 fprintf (of, "DF,");
2028 fprintf (of, "DG,");
2031 fprintf (of, "DC,");
2034 fprintf (of, "DX,");
2037 fprintf (of, "DD,");
2040 fprintf (of, "DI,");
2043 fprintf (of, "DP,");
2046 fprintf (of, "DA,");
2049 fprintf (of, "DA%d,", DCL_ELEM (type));
2057 switch (SPEC_NOUN (type))
2079 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2087 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2094 if (SPEC_USIGN (type))
2102 /*-----------------------------------------------------------------*/
2103 /* cdbSymbol - prints a symbol & its type information for debugger */
2104 /*-----------------------------------------------------------------*/
2106 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2118 fprintf (of, "S:"); /* symbol record */
2119 /* if this is not a structure symbol then
2120 we need to figure out the scope information */
2126 if (IS_STATIC (sym->etype))
2127 fprintf (of, "F%s$", moduleName); /* scope is file */
2129 fprintf (of, "G$"); /* scope is global */
2132 /* symbol is local */
2133 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2136 fprintf (of, "S$"); /* scope is structure */
2138 /* print the name, & mangled name */
2139 fprintf (of, "%s$%d$%d(", sym->name,
2140 sym->level, sym->block);
2142 cdbTypeInfo (sym->type, of);
2145 /* print the address space */
2146 map = SPEC_OCLS (sym->etype);
2147 fprintf (of, "%c,%d,%d",
2148 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2150 /* if assigned to registers then output register names */
2151 /* if this is a function then print
2152 if is it an interrupt routine & interrupt number
2153 and the register bank it is using */
2155 fprintf (of, ",%d,%d,%d", SPEC_INTRTN (sym->etype),
2156 SPEC_INTN (sym->etype), SPEC_BANK (sym->etype));
2157 /* alternate location to find this symbol @ : eg registers
2164 /*-----------------------------------------------------------------*/
2165 /* cdbStruct - print a structure for debugger */
2166 /*-----------------------------------------------------------------*/
2168 cdbStruct (structdef * sdef, int block, FILE * of,
2169 int inStruct, char *tag)
2174 /* if block # then must have function scope */
2175 fprintf (of, "F%s$", moduleName);
2176 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2177 for (sym = sdef->fields; sym; sym = sym->next)
2179 fprintf (of, "({%d}", sym->offset);
2180 cdbSymbol (sym, of, TRUE, FALSE);
2188 /*------------------------------------------------------------------*/
2189 /* cdbStructBlock - calls struct printing for a blcks */
2190 /*------------------------------------------------------------------*/
2192 cdbStructBlock (int block, FILE * of)
2195 bucket **table = StructTab;
2199 /* go thru the entire table */
2200 for (i = 0; i < 256; i++)
2202 for (chain = table[i]; chain; chain = chain->next)
2204 if (chain->block >= block)
2206 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2212 /*-----------------------------------------------------------------*/
2213 /* powof2 - returns power of two for the number if number is pow 2 */
2214 /*-----------------------------------------------------------------*/
2216 powof2 (unsigned long num)
2229 if (n1s > 1 || nshifts == 0)
2245 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2246 symbol *__muldiv[3][3][2];
2247 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2248 sym_link *__multypes[3][2];
2249 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2250 symbol *__conv[2][3][2];
2251 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2252 symbol *__rlrr[2][3][2];
2254 sym_link *floatType;
2257 _mangleFunctionName(char *in)
2259 if (port->getMangledFunctionName)
2261 return port->getMangledFunctionName(in);
2269 /*-----------------------------------------------------------------*/
2270 /* initCSupport - create functions for C support routines */
2271 /*-----------------------------------------------------------------*/
2275 const char *smuldivmod[] =
2279 const char *sbwd[] =
2281 "char", "int", "long"
2287 const char *srlrr[] =
2292 int bwd, su, muldivmod, tofrom, rlrr;
2294 if (getenv("SDCC_NO_C_SUPPORT")) {
2295 /* for debugging only */
2299 floatType = newFloatLink ();
2301 for (bwd = 0; bwd < 3; bwd++)
2318 __multypes[bwd][0] = l;
2319 __multypes[bwd][1] = copyLinkChain (l);
2320 SPEC_USIGN (__multypes[bwd][1]) = 1;
2323 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2324 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2325 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2326 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2327 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2328 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2329 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2330 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2331 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2332 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2334 for (tofrom = 0; tofrom < 2; tofrom++)
2336 for (bwd = 0; bwd < 3; bwd++)
2338 for (su = 0; su < 2; su++)
2342 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2343 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2347 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2348 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2354 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2356 for (bwd = 0; bwd < 3; bwd++)
2358 for (su = 0; su < 2; su++)
2360 sprintf (buffer, "_%s%s%s",
2361 smuldivmod[muldivmod],
2364 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2365 SPEC_NONBANKED (__muldiv[muldivmod][bwd][su]->etype) = 1;
2370 for (rlrr = 0; rlrr < 2; rlrr++)
2372 for (bwd = 0; bwd < 3; bwd++)
2374 for (su = 0; su < 2; su++)
2376 sprintf (buffer, "_%s%s%s",
2380 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2381 SPEC_NONBANKED (__rlrr[rlrr][bwd][su]->etype) = 1;