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 /* change the pointer type depending on the
325 storage class of the type */
328 DCL_PTR_CONST (ptr) = SPEC_CONST (type);
329 DCL_PTR_VOLATILE (ptr) = SPEC_VOLATILE (type);
330 switch (SPEC_SCLS (type))
333 DCL_TYPE (ptr) = FPOINTER;
336 DCL_TYPE (ptr) = IPOINTER;
339 DCL_TYPE (ptr) = PPOINTER;
342 DCL_TYPE (ptr) = POINTER;
345 DCL_PTR_CONST (ptr) = port->mem.code_ro;
346 DCL_TYPE (ptr) = CPOINTER;
349 DCL_TYPE (ptr) = EEPPOINTER;
352 DCL_TYPE (ptr) = GPOINTER;
355 /* the storage class of type ends here */
358 SPEC_VOLATILE (type) = 0;
361 /* now change all the remaining unknown pointers
362 to generic pointers */
365 if (!IS_SPEC (ptr) && DCL_TYPE (ptr) == UPOINTER)
366 DCL_TYPE (ptr) = GPOINTER;
370 /* same for the type although it is highly unlikely that
371 type will have a pointer */
374 if (!IS_SPEC (type) && DCL_TYPE (type) == UPOINTER)
375 DCL_TYPE (type) = GPOINTER;
381 /*------------------------------------------------------------------*/
382 /* addDecl - adds a declarator @ the end of a chain */
383 /*------------------------------------------------------------------*/
385 addDecl (symbol * sym, int type, sym_link * p)
391 /* if we are passed a link then set head & tail */
400 head = tail = newLink ();
401 DCL_TYPE (head) = type;
404 /* if this is the first entry */
412 if (IS_SPEC (sym->etype) && IS_SPEC (head) && head == tail)
414 sym->etype = mergeSpec (sym->etype, head, sym->name);
418 if (IS_SPEC (sym->etype) && !IS_SPEC (head) && head == tail)
421 while (t->next != sym->etype)
424 tail->next = sym->etype;
428 sym->etype->next = head;
434 /* if the type is a unknown pointer and has
435 a tspec then take the storage class const & volatile
436 attribute from the tspec & make it those of this
440 DCL_TYPE (p) == UPOINTER &&
443 if (!IS_SPEC (sym->etype))
445 sym->etype = sym->etype->next = newLink ();
446 sym->etype->class = SPECIFIER;
448 SPEC_SCLS (sym->etype) = SPEC_SCLS (DCL_TSPEC (p));
449 SPEC_CONST (sym->etype) = SPEC_CONST (DCL_TSPEC (p));
450 SPEC_VOLATILE (sym->etype) = SPEC_VOLATILE (DCL_TSPEC (p));
451 DCL_TSPEC (p) = NULL;
456 /*------------------------------------------------------------------
457 checkTypeSanity: prevent the user from doing e.g.:
459 ------------------------------------------------------------------*/
460 void checkTypeSanity(sym_link *etype, char *name) {
464 if (getenv("DEBUG_SANITY")) {
465 fprintf (stderr, "sanity check skipped for %s (etype==0)\n", name);
470 if (!IS_SPEC(etype)) {
471 if (getenv("DEBUG_SANITY")) {
472 fprintf (stderr, "sanity check skipped for %s (!IS_SPEC)\n", name);
477 noun=nounName(etype);
479 if (getenv("DEBUG_SANITY")) {
480 fprintf (stderr, "checking sanity for %s %x\n", name, (int)etype);
483 if ((SPEC_NOUN(etype)==V_CHAR ||
484 SPEC_NOUN(etype)==V_FLOAT ||
485 SPEC_NOUN(etype)==V_DOUBLE ||
486 SPEC_NOUN(etype)==V_VOID) &&
487 (etype->select.s._short || SPEC_LONG(etype))) {
488 // long or short for char float double or void
489 werror (E_LONG_OR_SHORT_INVALID, noun, name);
491 if ((SPEC_NOUN(etype)==V_FLOAT ||
492 SPEC_NOUN(etype)==V_DOUBLE ||
493 SPEC_NOUN(etype)==V_VOID) &&
494 (etype->select.s._signed || SPEC_USIGN(etype))) {
495 // signed or unsigned for float double or void
496 werror (E_SIGNED_OR_UNSIGNED_INVALID, noun, name);
499 // special case for "short"
500 if (etype->select.s._short) {
501 SPEC_NOUN(etype) = options.shortis8bits ? V_CHAR : V_INT;
502 etype->select.s._short = 0;
506 "const a;" or "data b;" or "signed s" or "long l"
508 if (!SPEC_NOUN(etype)) {
509 SPEC_NOUN(etype)=V_INT;
512 if (etype->select.s._signed && SPEC_USIGN(etype)) {
513 // signed AND unsigned
514 werror (E_SIGNED_AND_UNSIGNED_INVALID, noun, name);
516 if (etype->select.s._short && SPEC_LONG(etype)) {
518 werror (E_LONG_AND_SHORT_INVALID, noun, name);
523 /*------------------------------------------------------------------*/
524 /* mergeSpec - merges two specifiers and returns the new one */
525 /*------------------------------------------------------------------*/
526 #define LAST_MINUTE_2_3_0_FIX
528 mergeSpec (sym_link * dest, sym_link * src, char *name)
531 #ifdef LAST_MINUTE_2_3_0_FIX
534 if (!IS_SPEC(dest)) {
535 // This should not happen
536 fprintf (stderr, "*** internal error: can't merge declarators\n");
539 // here we have a declarator as source, reverse them
543 while (!IS_SPEC(dest)) {
544 // and find the specifier
552 if (getenv("DEBUG_mergeSpec")) {
553 fprintf (stderr, "mergeSpec: \"%s\"\n", name);
556 if (SPEC_NOUN(src)) {
557 if (!SPEC_NOUN(dest)) {
558 SPEC_NOUN(dest)=SPEC_NOUN(src);
560 /* we shouldn't redeclare the type */
561 if (getenv("DEBUG_SANITY")) {
562 fprintf (stderr, "mergeSpec: ");
564 werror(E_TWO_OR_MORE_DATA_TYPES, name);
568 if (SPEC_SCLS(src)) {
569 /* if destination has no storage class */
570 if (!SPEC_SCLS (dest) || SPEC_SCLS(dest)==S_REGISTER) {
571 SPEC_SCLS (dest) = SPEC_SCLS (src);
573 if (getenv("DEBUG_SANITY")) {
574 fprintf (stderr, "mergeSpec: ");
576 werror(E_TWO_OR_MORE_STORAGE_CLASSES, name);
580 /* copy all the specifications */
582 // we really should do:
584 if (SPEC_what(src)) {
585 if (SPEC_what(dest)) {
586 werror(W_DUPLICATE_SPEC, "what");
588 SPEC_what(dst)|=SPEC_what(src);
591 // but there are more important thing right now
593 SPEC_LONG (dest) |= SPEC_LONG (src);
594 dest->select.s._short|=src->select.s._short;
595 SPEC_USIGN (dest) |= SPEC_USIGN (src);
596 dest->select.s._signed|=src->select.s._signed;
597 SPEC_STAT (dest) |= SPEC_STAT (src);
598 SPEC_EXTR (dest) |= SPEC_EXTR (src);
599 SPEC_ABSA (dest) |= SPEC_ABSA (src);
600 SPEC_RENT (dest) |= SPEC_RENT (src);
601 SPEC_INTN (dest) |= SPEC_INTN (src);
602 SPEC_BANK (dest) |= SPEC_BANK (src);
603 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
604 SPEC_CRTCL (dest) |= SPEC_CRTCL (src);
605 SPEC_ADDR (dest) |= SPEC_ADDR (src);
606 SPEC_OCLS (dest) = SPEC_OCLS (src);
607 SPEC_BLEN (dest) |= SPEC_BLEN (src);
608 SPEC_BSTR (dest) |= SPEC_BSTR (src);
609 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
610 SPEC_NONBANKED (dest) |= SPEC_NONBANKED (src);
611 SPEC_NAKED (dest) |= SPEC_NAKED (src);
613 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
614 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
616 #ifdef LAST_MINUTE_2_3_0_FIX
623 /*------------------------------------------------------------------*/
624 /* cloneSpec - copies the entire spec and returns a new spec */
625 /*------------------------------------------------------------------*/
627 cloneSpec (sym_link * src)
631 /* go thru chain till we find the specifier */
632 while (src && src->class != SPECIFIER)
636 memcpy (spec, src, sizeof (sym_link));
640 /*------------------------------------------------------------------*/
641 /* genSymName - generates and returns a name used for anonymous vars */
642 /*------------------------------------------------------------------*/
644 genSymName (int level)
646 static int gCount = 0;
647 static char gname[SDCC_NAME_MAX + 1];
649 sprintf (gname, "__%04d%04d", level, gCount++);
653 /*------------------------------------------------------------------*/
654 /* getSpec - returns the specifier part from a declaration chain */
655 /*------------------------------------------------------------------*/
657 getSpec (sym_link * p)
662 while (p && !(IS_SPEC (p)))
668 /*------------------------------------------------------------------*/
669 /* newCharLink() - creates an char type */
670 /*------------------------------------------------------------------*/
677 p->class = SPECIFIER;
678 SPEC_NOUN (p) = V_CHAR;
683 /*------------------------------------------------------------------*/
684 /* newFloatLink - a new Float type */
685 /*------------------------------------------------------------------*/
692 p->class = SPECIFIER;
693 SPEC_NOUN (p) = V_FLOAT;
698 /*------------------------------------------------------------------*/
699 /* newLongLink() - new long type */
700 /*------------------------------------------------------------------*/
707 p->class = SPECIFIER;
708 SPEC_NOUN (p) = V_INT;
714 /*------------------------------------------------------------------*/
715 /* newIntLink() - creates an int type */
716 /*------------------------------------------------------------------*/
723 p->class = SPECIFIER;
724 SPEC_NOUN (p) = V_INT;
729 /*------------------------------------------------------------------*/
730 /* getSize - returns size of a type chain in bits */
731 /*------------------------------------------------------------------*/
733 getSize (sym_link * p)
735 /* if nothing return 0 */
739 { /* if this is the specifier then */
740 switch (SPEC_NOUN (p))
741 { /* depending on the specifier type */
743 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
751 return SPEC_STRUCT (p)->size;
757 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
763 /* this is a specifier */
764 switch (DCL_TYPE (p))
769 return DCL_ELEM (p) * getSize (p->next);
786 /*------------------------------------------------------------------*/
787 /* bitsForType - returns # of bits required to store this type */
788 /*------------------------------------------------------------------*/
790 bitsForType (sym_link * p)
792 /* if nothing return 0 */
797 { /* if this is the specifier then */
799 switch (SPEC_NOUN (p))
800 { /* depending on the specifier type */
802 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
804 return FLOATSIZE * 8;
810 return SPEC_STRUCT (p)->size * 8;
816 return SPEC_BLEN (p);
822 /* this is a specifier */
823 switch (DCL_TYPE (p))
828 return DCL_ELEM (p) * getSize (p->next) * 8;
832 return (PTRSIZE * 8);
836 return (FPTRSIZE * 8);
838 return (GPTRSIZE * 8);
845 /*------------------------------------------------------------------*/
846 /* copySymbolChain - copies a symbol chain */
847 /*------------------------------------------------------------------*/
849 copySymbolChain (symbol * src)
856 dest = copySymbol (src);
857 dest->next = copySymbolChain (src->next);
861 /*------------------------------------------------------------------*/
862 /* copySymbol - makes a copy of a symbol */
863 /*------------------------------------------------------------------*/
865 copySymbol (symbol * src)
872 dest = newSymbol (src->name, src->level);
873 memcpy (dest, src, sizeof (symbol));
874 dest->level = src->level;
875 dest->block = src->block;
876 dest->ival = copyIlist (src->ival);
877 dest->type = copyLinkChain (src->type);
878 dest->etype = getSpec (dest->type);
880 dest->args = copyValueChain (src->args);
881 dest->key = src->key;
882 dest->calleeSave = src->calleeSave;
883 dest->allocreq = src->allocreq;
887 /*------------------------------------------------------------------*/
888 /* reverseSyms - reverses the links for a symbol chain */
889 /*------------------------------------------------------------------*/
891 reverseSyms (symbol * sym)
893 symbol *prev, *curr, *next;
908 sym->next = (void *) NULL;
912 /*------------------------------------------------------------------*/
913 /* reverseLink - reverses the links for a type chain */
914 /*------------------------------------------------------------------*/
916 reverseLink (sym_link * type)
918 sym_link *prev, *curr, *next;
933 type->next = (void *) NULL;
937 /*------------------------------------------------------------------*/
938 /* addSymChain - adds a symbol chain to the symboltable */
939 /*------------------------------------------------------------------*/
941 addSymChain (symbol * symHead)
943 symbol *sym = symHead;
946 for (; sym != NULL; sym = sym->next)
949 checkTypeSanity(sym->etype, sym->name);
951 /* if already exists in the symbol table then check if
952 one of them is an extern definition if yes then
953 then check if the type match, if the types match then
954 delete the current entry and add the new entry */
955 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
956 csym->level == sym->level) {
958 /* one definition extern ? */
959 if (IS_EXTERN (csym->etype) || IS_EXTERN (sym->etype)) {
960 /* do types match ? */
961 if (compareType (csym->type, sym->type) != 1) {
963 werror (E_EXTERN_MISMATCH, csym->name);
966 /* delete current entry */
967 deleteSym (SymbolTab, csym, csym->name);
970 werror (E_DUPLICATE, sym->name);
976 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
981 /*------------------------------------------------------------------*/
982 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
983 /*------------------------------------------------------------------*/
985 funcInChain (sym_link * lnk)
996 /*------------------------------------------------------------------*/
997 /* structElemType - returns the type info of a sturct member */
998 /*------------------------------------------------------------------*/
1000 structElemType (sym_link * stype, value * id, value ** argsp)
1002 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
1003 sym_link *type, *etype;
1004 sym_link *petype = getSpec (stype);
1009 /* look for the id */
1012 if (strcmp (fields->rname, id->name) == 0)
1016 *argsp = fields->args;
1018 type = copyLinkChain (fields->type);
1019 etype = getSpec (type);
1020 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1021 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1024 fields = fields->next;
1026 werror (E_NOT_MEMBER, id->name);
1031 /*------------------------------------------------------------------*/
1032 /* getStructElement - returns element of a tructure definition */
1033 /*------------------------------------------------------------------*/
1035 getStructElement (structdef * sdef, symbol * sym)
1039 for (field = sdef->fields; field; field = field->next)
1040 if (strcmp (field->name, sym->name) == 0)
1043 werror (E_NOT_MEMBER, sym->name);
1045 return sdef->fields;
1048 /*------------------------------------------------------------------*/
1049 /* compStructSize - computes the size of a structure */
1050 /*------------------------------------------------------------------*/
1052 compStructSize (int su, structdef * sdef)
1054 int sum = 0, usum = 0;
1058 /* for the identifiers */
1059 loop = sdef->fields;
1062 /* create the internal name for this variable */
1063 sprintf (loop->rname, "_%s", loop->name);
1064 loop->offset = (su == UNION ? sum = 0 : sum);
1065 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1067 /* if this is a bit field */
1070 /* change it to a unsigned bit */
1071 SPEC_NOUN (loop->etype) = V_BIT;
1072 SPEC_USIGN (loop->etype) = 1;
1073 /* check if this fit into the remaining */
1074 /* bits of this byte else align it to the */
1075 /* next byte boundary */
1076 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1077 SPEC_BSTR (loop->etype) = bitOffset;
1078 if ((bitOffset += (loop->bitVar % 8)) == 8)
1081 else /* does not fit */ {
1083 SPEC_BSTR (loop->etype) = bitOffset;
1084 sum += (loop->bitVar / 8);
1085 bitOffset += (loop->bitVar % 8);
1087 /* if this is the last field then pad */
1088 if (!loop->next && bitOffset && bitOffset != 8) {
1094 checkDecl (loop, 1);
1095 sum += getSize (loop->type);
1098 /* if function then do the arguments for it */
1099 if (funcInChain (loop->type)) {
1100 processFuncArgs (loop, 1);
1105 /* if this is not a bitfield but the */
1106 /* previous one was and did not take */
1107 /* the whole byte then pad the rest */
1108 if ((loop && !loop->bitVar) && bitOffset) {
1113 /* if union then size = sizeof larget field */
1115 usum = max (usum, sum);
1119 return (su == UNION ? usum : sum);
1122 /*------------------------------------------------------------------*/
1123 /* checkSClass - check the storage class specification */
1124 /*------------------------------------------------------------------*/
1126 checkSClass (symbol * sym, int isProto)
1128 if (getenv("DEBUG_SANITY")) {
1129 fprintf (stderr, "checkSClass: %s \n", sym->name);
1131 if (strcmp(sym->name, "_testsGlobal")==0) {
1135 /* type is literal can happen foe enums change
1137 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1138 SPEC_SCLS (sym->etype) = S_AUTO;
1140 /* if sfr or sbit then must also be */
1141 /* volatile the initial value will be xlated */
1142 /* to an absolute address */
1143 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1144 SPEC_SCLS (sym->etype) == S_SFR)
1146 SPEC_VOLATILE (sym->etype) = 1;
1147 /* if initial value given */
1150 SPEC_ABSA (sym->etype) = 1;
1151 SPEC_ADDR (sym->etype) =
1152 (int) list2int (sym->ival);
1157 /* if absolute address given then it mark it as
1159 if (IS_ABSOLUTE (sym->etype))
1160 SPEC_VOLATILE (sym->etype) = 1;
1162 /* global variables declared const put into code */
1163 if (sym->level == 0 &&
1164 SPEC_CONST (sym->etype)) {
1165 SPEC_SCLS (sym->etype) = S_CODE;
1168 /* global variable in code space is a constant */
1169 if (sym->level == 0 &&
1170 SPEC_SCLS (sym->etype) == S_CODE &&
1172 SPEC_CONST (sym->etype) = 1;
1175 /* if bit variable then no storage class can be */
1176 /* specified since bit is already a storage */
1177 if (IS_BITVAR (sym->etype) &&
1178 (SPEC_SCLS (sym->etype) != S_FIXED &&
1179 SPEC_SCLS (sym->etype) != S_SBIT &&
1180 SPEC_SCLS (sym->etype) != S_BIT)
1183 werror (E_BITVAR_STORAGE, sym->name);
1184 SPEC_SCLS (sym->etype) = S_FIXED;
1187 /* extern variables cannot be initialized */
1188 if (IS_EXTERN (sym->etype) && sym->ival)
1190 werror (E_EXTERN_INIT, sym->name);
1195 /* if this is an automatic symbol then */
1196 /* storage class will be ignored and */
1197 /* symbol will be allocated on stack/ */
1198 /* data depending on flag */
1200 (options.stackAuto || reentrant) &&
1201 (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))
1207 werror (E_AUTO_ASSUMED, sym->name);
1208 SPEC_SCLS (sym->etype) = S_AUTO;
1211 /* if this is an atomatic symbol */
1212 if (sym->level && (options.stackAuto || reentrant)) {
1213 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1214 SPEC_SCLS (sym->etype) == S_FIXED ||
1215 SPEC_SCLS (sym->etype) == S_REGISTER ||
1216 SPEC_SCLS (sym->etype) == S_STACK ||
1217 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1218 SPEC_SCLS (sym->etype) = S_AUTO;
1220 /* storage class may only be specified for statics */
1221 if (!IS_STATIC(sym->etype)) {
1222 werror (E_AUTO_ASSUMED, sym->name);
1228 /* automatic symbols cannot be given */
1229 /* an absolute address ignore it */
1231 SPEC_ABSA (sym->etype) &&
1232 (options.stackAuto || reentrant))
1234 werror (E_AUTO_ABSA, sym->name);
1235 SPEC_ABSA (sym->etype) = 0;
1238 /* arrays & pointers cannot be defined for bits */
1239 /* SBITS or SFRs or BIT */
1240 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1241 (SPEC_NOUN (sym->etype) == V_BIT ||
1242 SPEC_NOUN (sym->etype) == V_SBIT ||
1243 SPEC_SCLS (sym->etype) == S_SFR))
1244 werror (E_BIT_ARRAY, sym->name);
1246 /* if this is a bit|sbit then set length & start */
1247 if (SPEC_NOUN (sym->etype) == V_BIT ||
1248 SPEC_NOUN (sym->etype) == V_SBIT)
1250 SPEC_BLEN (sym->etype) = 1;
1251 SPEC_BSTR (sym->etype) = 0;
1255 /* variables declared in CODE space must have */
1256 /* initializers if not an extern */
1257 if (SPEC_SCLS (sym->etype) == S_CODE &&
1258 sym->ival == NULL &&
1260 port->mem.code_ro &&
1261 !IS_EXTERN (sym->etype) &&
1262 !funcInChain (sym->type))
1263 werror (E_CODE_NO_INIT, sym->name);
1266 /* if parameter or local variable then change */
1267 /* the storage class to reflect where the var will go */
1268 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1269 !IS_STATIC(sym->etype))
1271 if (options.stackAuto || (currFunc && IS_RENT (currFunc->etype)))
1273 SPEC_SCLS (sym->etype) = (options.useXstack ?
1274 S_XSTACK : S_STACK);
1278 /* hack-o-matic! I see no reason why the useXstack option should ever
1279 * control this allcoation, but the code was originally that way, and
1280 * changing it for non-390 ports breaks the compiler badly.
1282 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1283 SPEC_SCLS (sym->etype) = (useXdata ?
1289 /*------------------------------------------------------------------*/
1290 /* changePointer - change pointer to functions */
1291 /*------------------------------------------------------------------*/
1293 changePointer (symbol * sym)
1297 /* go thru the chain of declarations */
1298 /* if we find a pointer to a function */
1299 /* unconditionally change it to a ptr */
1301 for (p = sym->type; p; p = p->next)
1303 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1304 DCL_TYPE (p) = GPOINTER;
1305 if (IS_PTR (p) && IS_FUNC (p->next))
1306 DCL_TYPE (p) = CPOINTER;
1310 /*------------------------------------------------------------------*/
1311 /* checkDecl - does semantic validation of a declaration */
1312 /*------------------------------------------------------------------*/
1314 checkDecl (symbol * sym, int isProto)
1317 checkSClass (sym, isProto); /* check the storage class */
1318 changePointer (sym); /* change pointers if required */
1320 /* if this is an array without any dimension
1321 then update the dimension from the initial value */
1322 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1323 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1328 /*------------------------------------------------------------------*/
1329 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1330 /*------------------------------------------------------------------*/
1332 copyLinkChain (sym_link * p)
1334 sym_link *head, *curr, *loop;
1337 head = loop = (curr ? newLink () : (void *) NULL);
1340 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1341 loop->next = (curr->next ? newLink () : (void *) NULL);
1350 /*------------------------------------------------------------------*/
1351 /* cleanUpBlock - cleansup the symbol table specified for all the */
1352 /* symbols in the given block */
1353 /*------------------------------------------------------------------*/
1355 cleanUpBlock (bucket ** table, int block)
1360 /* go thru the entire table */
1361 for (i = 0; i < 256; i++)
1363 for (chain = table[i]; chain; chain = chain->next)
1365 if (chain->block >= block)
1367 deleteSym (table, chain->sym, chain->name);
1373 /*------------------------------------------------------------------*/
1374 /* cleanUpLevel - cleansup the symbol table specified for all the */
1375 /* symbols in the given level */
1376 /*------------------------------------------------------------------*/
1378 cleanUpLevel (bucket ** table, int level)
1383 /* go thru the entire table */
1384 for (i = 0; i < 256; i++)
1386 for (chain = table[i]; chain; chain = chain->next)
1388 if (chain->level >= level)
1390 deleteSym (table, chain->sym, chain->name);
1396 /*------------------------------------------------------------------*/
1397 /* computeType - computes the resultant type from two types */
1398 /*------------------------------------------------------------------*/
1400 computeType (sym_link * type1, sym_link * type2)
1404 sym_link *etype1 = getSpec (type1);
1405 sym_link *etype2 = getSpec (type2);
1407 /* if one of them is a float then result is a float */
1408 /* here we assume that the types passed are okay */
1409 /* and can be cast to one another */
1410 /* which ever is greater in size */
1411 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1412 rType = newFloatLink ();
1414 /* if only one of them is a bit variable
1415 then the other one prevails */
1416 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1417 rType = copyLinkChain (type2);
1418 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1419 rType = copyLinkChain (type1);
1421 /* if one of them is a pointer then that
1424 rType = copyLinkChain (type1);
1425 else if (IS_PTR (type2))
1426 rType = copyLinkChain (type2);
1427 else if (getSize (type1) > getSize (type2))
1428 rType = copyLinkChain (type1);
1430 rType = copyLinkChain (type2);
1432 reType = getSpec (rType);
1434 /* if either of them unsigned then make this unsigned */
1435 if ((SPEC_USIGN (etype1) || SPEC_USIGN (etype2)) && !IS_FLOAT (reType))
1436 SPEC_USIGN (reType) = 1;
1438 /* if result is a literal then make not so */
1439 if (IS_LITERAL (reType))
1440 SPEC_SCLS (reType) = S_REGISTER;
1445 /*------------------------------------------------------------------*/
1446 /* compareType - will do type check return 1 if match */
1447 /*------------------------------------------------------------------*/
1449 compareType (sym_link * dest, sym_link * src)
1460 /* if dest is a declarator then */
1465 if (DCL_TYPE (src) == DCL_TYPE (dest))
1466 return compareType (dest->next, src->next);
1467 else if (IS_PTR (src) && IS_PTR (dest))
1469 else if (IS_PTR (dest) && IS_ARRAY (src))
1471 else if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1472 return -1 * compareType (dest->next, src);
1476 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1482 /* if one is a specifier and the other is not */
1483 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1484 (IS_SPEC (dest) && !IS_SPEC (src)))
1487 /* if one of them is a void then ok */
1488 if (SPEC_NOUN (dest) == V_VOID &&
1489 SPEC_NOUN (src) != V_VOID)
1492 if (SPEC_NOUN (dest) != V_VOID &&
1493 SPEC_NOUN (src) == V_VOID)
1496 /* if they are both bitfields then if the lengths
1497 and starts don't match */
1498 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1499 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1500 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1503 /* it is a specifier */
1504 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1506 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1507 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1508 getSize (dest) == getSize (src))
1510 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1515 else if (IS_STRUCT (dest))
1517 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1522 if (SPEC_LONG (dest) != SPEC_LONG (src))
1525 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1531 /*------------------------------------------------------------------*/
1532 /* inCalleeSaveList - return 1 if found in callee save list */
1533 /*------------------------------------------------------------------*/
1535 inCalleeSaveList (char *s)
1539 for (i = 0; options.calleeSaves[i]; i++)
1540 if (strcmp (options.calleeSaves[i], s) == 0)
1546 /*-----------------------------------------------------------------*/
1547 /* aggregateArgToPointer: change an agggregate type function */
1548 /* argument to a pointer to that type. */
1549 /*-----------------------------------------------------------------*/
1551 aggregateArgToPointer (value * val)
1553 if (IS_AGGREGATE (val->type))
1555 /* if this is a structure */
1556 /* then we need to add a new link */
1557 if (IS_STRUCT (val->type))
1559 /* first lets add DECLARATOR type */
1560 sym_link *p = val->type;
1562 werror (W_STRUCT_AS_ARG, val->name);
1563 val->type = newLink ();
1564 val->type->next = p;
1567 /* change to a pointer depending on the */
1568 /* storage class specified */
1569 switch (SPEC_SCLS (val->etype))
1572 DCL_TYPE (val->type) = IPOINTER;
1575 DCL_TYPE (val->type) = PPOINTER;
1578 if (TARGET_IS_DS390)
1580 /* The AUTO and REGISTER classes should probably
1581 * also become generic pointers, but I haven't yet
1582 * devised a test case for that.
1584 DCL_TYPE (val->type) = GPOINTER;
1591 DCL_TYPE (val->type) = POINTER;
1594 DCL_TYPE (val->type) = CPOINTER;
1597 DCL_TYPE (val->type) = FPOINTER;
1600 DCL_TYPE (val->type) = EEPPOINTER;
1603 DCL_TYPE (val->type) = GPOINTER;
1606 /* is there is a symbol associated then */
1607 /* change the type of the symbol as well */
1610 val->sym->type = copyLinkChain (val->type);
1611 val->sym->etype = getSpec (val->sym->type);
1615 /*------------------------------------------------------------------*/
1616 /* checkFunction - does all kinds of check on a function */
1617 /*------------------------------------------------------------------*/
1619 checkFunction (symbol * sym)
1622 value *exargs, *acargs;
1626 if (getenv("DEBUG_SANITY")) {
1627 fprintf (stderr, "checkFunction: %s ", sym->name);
1630 /* make sure the type is complete and sane */
1631 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1633 /* if not type then some kind of error */
1637 /* if the function has no type then make it return int */
1638 if (!sym->type->next)
1639 sym->type->next = sym->etype = newIntLink ();
1641 /* function cannot return aggregate */
1642 if (IS_AGGREGATE (sym->type->next))
1644 werror (E_FUNC_AGGR, sym->name);
1648 /* function cannot return bit */
1649 if (IS_BITVAR (sym->type->next))
1651 werror (E_FUNC_BIT, sym->name);
1655 /* check if this function is defined as calleeSaves
1656 then mark it as such */
1657 sym->calleeSave = inCalleeSaveList (sym->name);
1659 /* if interrupt service routine */
1660 /* then it cannot have arguments */
1661 if (sym->args && IS_ISR (sym->etype) && !IS_VOID (sym->args->type))
1663 werror (E_INT_ARGS, sym->name);
1667 if (!(csym = findSym (SymbolTab, sym, sym->name)))
1668 return 1; /* not defined nothing more to check */
1670 /* check if body already present */
1671 if (csym && csym->fbody)
1673 werror (E_FUNC_BODY, sym->name);
1677 /* check the return value type */
1678 if (compareType (csym->type, sym->type) <= 0)
1680 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1681 werror (E_CONTINUE, "previous definition type ");
1682 printTypeChain (csym->type, stderr);
1683 fprintf (stderr, "\n");
1684 werror (E_CONTINUE, "current definition type ");
1685 printTypeChain (sym->type, stderr);
1686 fprintf (stderr, "\n");
1690 if (SPEC_INTRTN (csym->etype) != SPEC_INTRTN (sym->etype))
1692 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1695 if (SPEC_BANK (csym->etype) != SPEC_BANK (sym->etype))
1697 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1700 if (SPEC_NAKED (csym->etype) != SPEC_NAKED (sym->etype))
1702 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1705 /* compare expected agrs with actual args */
1706 exargs = csym->args;
1709 /* for all the expected args do */
1712 exargs = exargs->next, acargs = acargs->next, argCnt++)
1714 if (getenv("DEBUG_SANITY")) {
1715 fprintf (stderr, "checkFunction: %s ", exargs->name);
1717 /* make sure the type is complete and sane */
1718 checkTypeSanity(exargs->etype, exargs->name);
1720 /* If the actual argument is an array, any prototype
1721 * will have modified it to a pointer. Duplicate that
1724 if (IS_AGGREGATE (acargs->type))
1726 checkValue = copyValue (acargs);
1727 aggregateArgToPointer (checkValue);
1731 checkValue = acargs;
1734 if (compareType (exargs->type, checkValue->type) <= 0)
1736 werror (E_ARG_TYPE, argCnt);
1741 /* if one them ended we have a problem */
1742 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1743 (!exargs && acargs && !IS_VOID (acargs->type)))
1744 werror (E_ARG_COUNT);
1746 /* replace with this defition */
1747 sym->cdef = csym->cdef;
1748 deleteSym (SymbolTab, csym, csym->name);
1749 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1750 if (IS_EXTERN (csym->etype) && !
1751 IS_EXTERN (sym->etype))
1753 addSet (&publics, sym);
1758 /*-----------------------------------------------------------------*/
1759 /* processFuncArgs - does some processing with function args */
1760 /*-----------------------------------------------------------------*/
1762 processFuncArgs (symbol * func, int ignoreName)
1767 /* if this function has variable argument list */
1768 /* then make the function a reentrant one */
1770 SPEC_RENT (func->etype) = 1;
1772 /* check if this function is defined as calleeSaves
1773 then mark it as such */
1774 func->calleeSave = inCalleeSaveList (func->name);
1776 val = func->args; /* loop thru all the arguments */
1778 /* if it is void then remove parameters */
1779 if (val && IS_VOID (val->type))
1785 /* reset regparm for the port */
1786 (*port->reset_regparms) ();
1787 /* if any of the arguments is an aggregate */
1788 /* change it to pointer to the same type */
1791 /* mark it as a register parameter if
1792 the function does not have VA_ARG
1793 and as port dictates */
1794 if (!func->hasVargs &&
1795 (*port->reg_parm) (val->type))
1797 SPEC_REGPARM (val->etype) = 1;
1800 if (IS_AGGREGATE (val->type))
1802 aggregateArgToPointer (val);
1808 /* if this is an internal generated function call */
1810 /* ignore --stack-auto for this one, we don't know how it is compiled */
1811 /* simply trust on --int-long-reent or --float-reent */
1812 if (IS_RENT(func->etype)) {
1816 /* if this function is reentrant or */
1817 /* automatics r 2b stacked then nothing */
1818 if (IS_RENT (func->etype) || options.stackAuto)
1827 /* if a symbolname is not given */
1828 /* synthesize a variable name */
1832 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1833 val->sym = newSymbol (val->name, 1);
1834 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1835 val->sym->type = copyLinkChain (val->type);
1836 val->sym->etype = getSpec (val->sym->type);
1837 val->sym->_isparm = 1;
1838 strcpy (val->sym->rname, val->name);
1839 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1840 SPEC_STAT (func->etype);
1841 addSymChain (val->sym);
1844 else /* symbol name given create synth name */
1847 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1848 strcpy (val->sym->rname, val->name);
1849 val->sym->_isparm = 1;
1850 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1851 (options.model != MODEL_SMALL ? xdata : data);
1852 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1853 SPEC_STAT (func->etype);
1859 /*-----------------------------------------------------------------*/
1860 /* isSymbolEqual - compares two symbols return 1 if they match */
1861 /*-----------------------------------------------------------------*/
1863 isSymbolEqual (symbol * dest, symbol * src)
1865 /* if pointers match then equal */
1869 /* if one of them is null then don't match */
1873 /* if both of them have rname match on rname */
1874 if (dest->rname[0] && src->rname[0])
1875 return (!strcmp (dest->rname, src->rname));
1877 /* otherwise match on name */
1878 return (!strcmp (dest->name, src->name));
1881 void PT(sym_link *type)
1883 printTypeChain(type,0);
1885 /*-----------------------------------------------------------------*/
1886 /* printTypeChain - prints the type chain in human readable form */
1887 /*-----------------------------------------------------------------*/
1889 printTypeChain (sym_link * type, FILE * of)
1903 if (DCL_PTR_VOLATILE(type)) {
1904 fprintf (of, "volatile ");
1906 switch (DCL_TYPE (type))
1909 fprintf (of, "function ");
1912 fprintf (of, "_generic * ");
1913 if (DCL_PTR_CONST (type))
1914 fprintf (of, "const ");
1917 fprintf (of, "_code * ");
1918 if (DCL_PTR_CONST (type))
1919 fprintf (of, "const ");
1922 fprintf (of, "_far * ");
1923 if (DCL_PTR_CONST (type))
1924 fprintf (of, "const ");
1927 fprintf (of, "_eeprom * ");
1928 if (DCL_PTR_CONST (type))
1929 fprintf (of, "const ");
1933 fprintf (of, "_near * ");
1934 if (DCL_PTR_CONST (type))
1935 fprintf (of, "const ");
1938 fprintf (of, "_idata *");
1939 if (DCL_PTR_CONST (type))
1940 fprintf (of, "const ");
1943 fprintf (of, "_pdata *");
1944 if (DCL_PTR_CONST (type))
1945 fprintf (of, "const ");
1948 fprintf (of, " _unkown *");
1949 if (DCL_PTR_CONST (type))
1950 fprintf (of, "const ");
1953 fprintf (of, "array of ");
1959 if (SPEC_VOLATILE (type))
1960 fprintf (of, "volatile ");
1961 if (SPEC_USIGN (type))
1962 fprintf (of, "unsigned ");
1963 if (SPEC_CONST (type))
1964 fprintf (of, "const ");
1966 switch (SPEC_NOUN (type))
1970 fprintf (of, "long ");
1971 fprintf (of, "int ");
1975 fprintf (of, "char ");
1979 fprintf (of, "void ");
1983 fprintf (of, "float ");
1987 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
1991 fprintf (of, "sbit ");
1995 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
1999 fprintf (of, "double ");
2003 fprintf (of, "unknown type ");
2013 /*-----------------------------------------------------------------*/
2014 /* cdbTypeInfo - print the type information for debugger */
2015 /*-----------------------------------------------------------------*/
2017 cdbTypeInfo (sym_link * type, FILE * of)
2019 fprintf (of, "{%d}", getSize (type));
2024 switch (DCL_TYPE (type))
2027 fprintf (of, "DF,");
2030 fprintf (of, "DG,");
2033 fprintf (of, "DC,");
2036 fprintf (of, "DX,");
2039 fprintf (of, "DD,");
2042 fprintf (of, "DI,");
2045 fprintf (of, "DP,");
2048 fprintf (of, "DA,");
2051 fprintf (of, "DA%d,", DCL_ELEM (type));
2059 switch (SPEC_NOUN (type))
2081 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2089 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2096 if (SPEC_USIGN (type))
2104 /*-----------------------------------------------------------------*/
2105 /* cdbSymbol - prints a symbol & its type information for debugger */
2106 /*-----------------------------------------------------------------*/
2108 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2120 fprintf (of, "S:"); /* symbol record */
2121 /* if this is not a structure symbol then
2122 we need to figure out the scope information */
2128 if (IS_STATIC (sym->etype))
2129 fprintf (of, "F%s$", moduleName); /* scope is file */
2131 fprintf (of, "G$"); /* scope is global */
2134 /* symbol is local */
2135 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2138 fprintf (of, "S$"); /* scope is structure */
2140 /* print the name, & mangled name */
2141 fprintf (of, "%s$%d$%d(", sym->name,
2142 sym->level, sym->block);
2144 cdbTypeInfo (sym->type, of);
2147 /* print the address space */
2148 map = SPEC_OCLS (sym->etype);
2149 fprintf (of, "%c,%d,%d",
2150 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2152 /* if assigned to registers then output register names */
2153 /* if this is a function then print
2154 if is it an interrupt routine & interrupt number
2155 and the register bank it is using */
2157 fprintf (of, ",%d,%d,%d", SPEC_INTRTN (sym->etype),
2158 SPEC_INTN (sym->etype), SPEC_BANK (sym->etype));
2159 /* alternate location to find this symbol @ : eg registers
2166 /*-----------------------------------------------------------------*/
2167 /* cdbStruct - print a structure for debugger */
2168 /*-----------------------------------------------------------------*/
2170 cdbStruct (structdef * sdef, int block, FILE * of,
2171 int inStruct, char *tag)
2176 /* if block # then must have function scope */
2177 fprintf (of, "F%s$", moduleName);
2178 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2179 for (sym = sdef->fields; sym; sym = sym->next)
2181 fprintf (of, "({%d}", sym->offset);
2182 cdbSymbol (sym, of, TRUE, FALSE);
2190 /*------------------------------------------------------------------*/
2191 /* cdbStructBlock - calls struct printing for a blcks */
2192 /*------------------------------------------------------------------*/
2194 cdbStructBlock (int block, FILE * of)
2197 bucket **table = StructTab;
2201 /* go thru the entire table */
2202 for (i = 0; i < 256; i++)
2204 for (chain = table[i]; chain; chain = chain->next)
2206 if (chain->block >= block)
2208 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2214 /*-----------------------------------------------------------------*/
2215 /* powof2 - returns power of two for the number if number is pow 2 */
2216 /*-----------------------------------------------------------------*/
2218 powof2 (unsigned long num)
2231 if (n1s > 1 || nshifts == 0)
2247 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2248 symbol *__muldiv[3][3][2];
2249 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2250 sym_link *__multypes[3][2];
2251 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2252 symbol *__conv[2][3][2];
2253 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2254 symbol *__rlrr[2][3][2];
2256 sym_link *floatType;
2259 _mangleFunctionName(char *in)
2261 if (port->getMangledFunctionName)
2263 return port->getMangledFunctionName(in);
2271 /*-----------------------------------------------------------------*/
2272 /* initCSupport - create functions for C support routines */
2273 /*-----------------------------------------------------------------*/
2277 const char *smuldivmod[] =
2281 const char *sbwd[] =
2283 "char", "int", "long"
2289 const char *srlrr[] =
2294 int bwd, su, muldivmod, tofrom, rlrr;
2296 floatType = newFloatLink ();
2298 for (bwd = 0; bwd < 3; bwd++)
2315 __multypes[bwd][0] = l;
2316 __multypes[bwd][1] = copyLinkChain (l);
2317 SPEC_USIGN (__multypes[bwd][1]) = 1;
2320 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2321 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2322 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2323 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2324 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2325 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2326 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2327 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2328 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2329 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2331 for (tofrom = 0; tofrom < 2; tofrom++)
2333 for (bwd = 0; bwd < 3; bwd++)
2335 for (su = 0; su < 2; su++)
2339 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2340 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2344 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2345 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2351 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2353 for (bwd = 0; bwd < 3; bwd++)
2355 for (su = 0; su < 2; su++)
2357 sprintf (buffer, "_%s%s%s",
2358 smuldivmod[muldivmod],
2361 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2362 SPEC_NONBANKED (__muldiv[muldivmod][bwd][su]->etype) = 1;
2367 for (rlrr = 0; rlrr < 2; rlrr++)
2369 for (bwd = 0; bwd < 3; bwd++)
2371 for (su = 0; su < 2; su++)
2373 sprintf (buffer, "_%s%s%s",
2377 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2378 SPEC_NONBANKED (__rlrr[rlrr][bwd][su]->etype) = 1;