1 /*-------------------------------------------------------------------------
2 SDCCsymt.c - Code file for Symbols table related structures and MACRO's.
3 Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU General Public License as published by the
7 Free Software Foundation; either version 2, or (at your option) any
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 In other words, you are welcome to use, share and improve this program.
20 You are forbidden to forbid anyone else to use, share and improve
21 what you give them. Help stamp out software-hoarding!
22 -------------------------------------------------------------------------*/
28 char *nounName(sym_link *sl) {
29 switch (SPEC_NOUN(sl))
32 if (SPEC_LONG(sl)) return "long";
33 if (sl->select.s._short) return "short";
36 case V_FLOAT: return "float";
37 case V_CHAR: return "char";
38 case V_VOID: return "void";
39 case V_STRUCT: return "struct";
40 case V_LABEL: return "label";
41 case V_BIT: return "bit";
42 case V_SBIT: return "sbit";
43 case V_DOUBLE: return "double";
48 bucket *SymbolTab[256]; /* the symbol table */
49 bucket *StructTab[256]; /* the structure table */
50 bucket *TypedefTab[256]; /* the typedef table */
51 bucket *LabelTab[256]; /* the Label table */
52 bucket *enumTab[256]; /* enumerated table */
54 /*------------------------------------------------------------------*/
55 /* initSymt () - initialises symbol table related stuff */
56 /*------------------------------------------------------------------*/
62 for (i = 0; i < 256; i++)
63 SymbolTab[i] = StructTab[i] = (void *) NULL;
67 /*-----------------------------------------------------------------*/
68 /* newBucket - allocates & returns a new bucket */
69 /*-----------------------------------------------------------------*/
75 bp = Safe_calloc (1, sizeof (bucket));
80 /*-----------------------------------------------------------------*/
81 /* hashKey - computes the hashkey given a symbol name */
82 /*-----------------------------------------------------------------*/
84 hashKey (const char *s)
86 unsigned long key = 0;
93 /*-----------------------------------------------------------------*/
94 /* addSym - adds a symbol to the hash Table */
95 /*-----------------------------------------------------------------*/
97 addSym (bucket ** stab,
104 int i; /* index into the hash Table */
105 bucket *bp; /* temp bucket * */
108 if (getenv("DEBUG_SANITY")) {
109 fprintf (stderr, "addSym: %s ", sname);
111 /* make sure the type is complete and sane */
112 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
115 /* the symbols are always added at the head of the list */
117 /* get a free entry */
118 bp = Safe_calloc (1, sizeof (bucket));
120 bp->sym = sym; /* update the symbol pointer */
121 bp->level = level; /* update the nest level */
123 strcpy (bp->name, sname); /* copy the name into place */
125 /* if this is the first entry */
128 bp->prev = bp->next = (void *) NULL; /* point to nothing */
131 /* not first entry then add @ head of list */
141 /*-----------------------------------------------------------------*/
142 /* deleteSym - deletes a symbol from the hash Table entry */
143 /*-----------------------------------------------------------------*/
145 deleteSym (bucket ** stab, void *sym, char *sname)
153 /* find the symbol */
156 if (bp->sym == sym) /* found it then break out */
157 break; /* of the loop */
161 if (!bp) /* did not find it */
163 /* if this is the first one in the chain */
167 if (stab[i]) /* if chain ! empty */
168 stab[i]->prev = (void *) NULL;
170 /* middle || end of chain */
173 if (bp->next) /* if not end of chain */
174 bp->next->prev = bp->prev;
176 bp->prev->next = bp->next;
181 /*-----------------------------------------------------------------*/
182 /* findSym - finds a symbol in a table */
183 /*-----------------------------------------------------------------*/
185 findSym (bucket ** stab, void *sym, const char *sname)
189 bp = stab[hashKey (sname)];
192 if (bp->sym == sym || strcmp (bp->name, sname) == 0)
197 return (bp ? bp->sym : (void *) NULL);
200 /*-----------------------------------------------------------------*/
201 /* findSymWithLevel - finds a symbol with a name & level */
202 /*-----------------------------------------------------------------*/
204 findSymWithLevel (bucket ** stab, symbol * sym)
208 bp = stab[hashKey (sym->name)];
211 ** do the search from the head of the list since the
212 ** elements are added at the head it is ensured that
213 ** we will find the deeper definitions before we find
214 ** the global ones. we need to check for symbols with
215 ** level <= to the level given, if levels match then block
216 ** numbers need to match as well
221 if (strcmp (bp->name, sym->name) == 0 && bp->level <= sym->level)
223 /* if this is parameter then nothing else need to be checked */
224 if (((symbol *) (bp->sym))->_isparm)
226 /* if levels match then block numbers hsould also match */
227 if (bp->level && bp->level == sym->level && bp->block == sym->block)
229 /* if levels don't match then we are okay */
230 if (bp->level && bp->level != sym->level && bp->block <= sym->block)
232 /* if this is a global variable then we are ok too */
240 return (void *) NULL;
243 /*-----------------------------------------------------------------*/
244 /* findSymWithBlock - finds a symbol with name in with a block */
245 /*-----------------------------------------------------------------*/
247 findSymWithBlock (bucket ** stab, symbol * sym, int block)
251 bp = stab[hashKey (sym->name)];
254 if (strcmp (bp->name, sym->name) == 0 &&
260 return (bp ? bp->sym : (void *) NULL);
263 /*------------------------------------------------------------------*/
264 /* newSymbol () - returns a new pointer to a symbol */
265 /*------------------------------------------------------------------*/
267 newSymbol (char *name, int scope)
271 sym = Safe_calloc (1, sizeof (symbol));
273 strcpy (sym->name, name); /* copy the name */
274 sym->level = scope; /* set the level */
275 sym->block = currBlockno;
276 sym->lineDef = yylineno; /* set the line number */
280 /*------------------------------------------------------------------*/
281 /* newLink - creates a new link (declarator,specifier) */
282 /*------------------------------------------------------------------*/
288 p = Safe_calloc (1, sizeof (sym_link));
293 /*------------------------------------------------------------------*/
294 /* newStruct - creats a new structdef from the free list */
295 /*------------------------------------------------------------------*/
297 newStruct (char *tag)
301 s = Safe_calloc (1, sizeof (structdef));
303 strcpy (s->tag, tag); /* copy the tag */
307 /*------------------------------------------------------------------*/
308 /* pointerTypes - do the computation for the pointer types */
309 /*------------------------------------------------------------------*/
311 pointerTypes (sym_link * ptr, sym_link * type)
316 /* find the first pointer type */
317 while (ptr && !IS_PTR (ptr))
320 /* could not find it */
321 if (!ptr || IS_SPEC (ptr) ||
322 DCL_TYPE (ptr) != UPOINTER)
325 /* change the pointer type depending on the
326 storage class of the type */
329 DCL_PTR_CONST (ptr) = SPEC_CONST (type);
330 DCL_PTR_VOLATILE (ptr) = SPEC_VOLATILE (type);
331 switch (SPEC_SCLS (type))
334 DCL_TYPE (ptr) = FPOINTER;
337 DCL_TYPE (ptr) = IPOINTER;
340 DCL_TYPE (ptr) = PPOINTER;
343 DCL_TYPE (ptr) = POINTER;
346 DCL_PTR_CONST (ptr) = port->mem.code_ro;
347 DCL_TYPE (ptr) = CPOINTER;
350 DCL_TYPE (ptr) = EEPPOINTER;
353 DCL_TYPE (ptr) = GPOINTER;
356 /* the storage class of type ends here */
359 SPEC_VOLATILE (type) = 0;
362 /* now change all the remaining unknown pointers
363 to generic pointers */
366 if (!IS_SPEC (ptr) && DCL_TYPE (ptr) == UPOINTER)
367 DCL_TYPE (ptr) = GPOINTER;
371 /* same for the type although it is highly unlikely that
372 type will have a pointer */
375 if (!IS_SPEC (type) && DCL_TYPE (type) == UPOINTER)
376 DCL_TYPE (type) = GPOINTER;
382 /*------------------------------------------------------------------*/
383 /* addDecl - adds a declarator @ the end of a chain */
384 /*------------------------------------------------------------------*/
386 addDecl (symbol * sym, int type, sym_link * p)
392 /* if we are passed a link then set head & tail */
401 head = tail = newLink ();
402 DCL_TYPE (head) = type;
405 /* if this is the first entry */
413 if (IS_SPEC (sym->etype) && IS_SPEC (head) && head == tail)
415 sym->etype = mergeSpec (sym->etype, head, sym->name);
419 if (IS_SPEC (sym->etype) && !IS_SPEC (head) && head == tail)
422 while (t->next != sym->etype)
425 tail->next = sym->etype;
429 sym->etype->next = head;
435 /* if the type is a unknown pointer and has
436 a tspec then take the storage class const & volatile
437 attribute from the tspec & make it those of this
441 DCL_TYPE (p) == UPOINTER &&
444 if (!IS_SPEC (sym->etype))
446 sym->etype = sym->etype->next = newLink ();
447 sym->etype->class = SPECIFIER;
449 SPEC_SCLS (sym->etype) = SPEC_SCLS (DCL_TSPEC (p));
450 SPEC_CONST (sym->etype) = SPEC_CONST (DCL_TSPEC (p));
451 SPEC_VOLATILE (sym->etype) = SPEC_VOLATILE (DCL_TSPEC (p));
452 DCL_TSPEC (p) = NULL;
457 /*------------------------------------------------------------------
458 checkTypeSanity: prevent the user from doing e.g.:
460 ------------------------------------------------------------------*/
461 void checkTypeSanity(sym_link *etype, char *name) {
465 if (getenv("DEBUG_SANITY")) {
466 fprintf (stderr, "sanity check skipped for %s (etype==0)\n", name);
471 if (!IS_SPEC(etype)) {
472 if (getenv("DEBUG_SANITY")) {
473 fprintf (stderr, "sanity check skipped for %s (!IS_SPEC)\n", name);
478 noun=nounName(etype);
480 if (getenv("DEBUG_SANITY")) {
481 fprintf (stderr, "checking sanity for %s %x\n", name, (int)etype);
484 if ((SPEC_NOUN(etype)==V_CHAR ||
485 SPEC_NOUN(etype)==V_FLOAT ||
486 SPEC_NOUN(etype)==V_DOUBLE ||
487 SPEC_NOUN(etype)==V_VOID) &&
488 (etype->select.s._short || SPEC_LONG(etype))) {
489 // long or short for char float double or void
490 werror (E_LONG_OR_SHORT_INVALID, noun, name);
492 if ((SPEC_NOUN(etype)==V_FLOAT ||
493 SPEC_NOUN(etype)==V_DOUBLE ||
494 SPEC_NOUN(etype)==V_VOID) &&
495 (etype->select.s._signed || SPEC_USIGN(etype))) {
496 // signed or unsigned for float double or void
497 werror (E_SIGNED_OR_UNSIGNED_INVALID, noun, name);
500 // special case for "short"
501 if (etype->select.s._short) {
502 SPEC_NOUN(etype) = options.shortis8bits ? V_CHAR : V_INT;
503 etype->select.s._short = 0;
507 "const a;" or "data b;" or "signed s" or "long l"
509 if (!SPEC_NOUN(etype)) {
510 SPEC_NOUN(etype)=V_INT;
513 if (etype->select.s._signed && SPEC_USIGN(etype)) {
514 // signed AND unsigned
515 werror (E_SIGNED_AND_UNSIGNED_INVALID, noun, name);
517 if (etype->select.s._short && SPEC_LONG(etype)) {
519 werror (E_LONG_AND_SHORT_INVALID, noun, name);
524 /*------------------------------------------------------------------*/
525 /* mergeSpec - merges two specifiers and returns the new one */
526 /*------------------------------------------------------------------*/
527 #define LAST_MINUTE_2_3_0_FIX
529 mergeSpec (sym_link * dest, sym_link * src, char *name)
532 #ifdef LAST_MINUTE_2_3_0_FIX
535 if (!IS_SPEC(dest)) {
536 // This should not happen
537 fprintf (stderr, "*** internal error: can't merge declarators\n");
540 // here we have a declarator as source, reverse them
544 while (!IS_SPEC(dest)) {
545 // and find the specifier
553 if (getenv("DEBUG_mergeSpec")) {
554 fprintf (stderr, "mergeSpec: \"%s\"\n", name);
557 if (SPEC_NOUN(src)) {
558 if (!SPEC_NOUN(dest)) {
559 SPEC_NOUN(dest)=SPEC_NOUN(src);
561 /* we shouldn't redeclare the type */
562 if (getenv("DEBUG_SANITY")) {
563 fprintf (stderr, "mergeSpec: ");
565 werror(E_TWO_OR_MORE_DATA_TYPES, name);
569 if (SPEC_SCLS(src)) {
570 /* if destination has no storage class */
571 if (!SPEC_SCLS (dest) || SPEC_SCLS(dest)==S_REGISTER) {
572 SPEC_SCLS (dest) = SPEC_SCLS (src);
574 if (getenv("DEBUG_SANITY")) {
575 fprintf (stderr, "mergeSpec: ");
577 werror(E_TWO_OR_MORE_STORAGE_CLASSES, name);
581 /* copy all the specifications */
583 // we really should do:
585 if (SPEC_what(src)) {
586 if (SPEC_what(dest)) {
587 werror(W_DUPLICATE_SPEC, "what");
589 SPEC_what(dst)|=SPEC_what(src);
592 // but there are more important thing right now
594 SPEC_LONG (dest) |= SPEC_LONG (src);
595 dest->select.s._short|=src->select.s._short;
596 SPEC_USIGN (dest) |= SPEC_USIGN (src);
597 dest->select.s._signed|=src->select.s._signed;
598 SPEC_STAT (dest) |= SPEC_STAT (src);
599 SPEC_EXTR (dest) |= SPEC_EXTR (src);
600 SPEC_ABSA (dest) |= SPEC_ABSA (src);
601 SPEC_RENT (dest) |= SPEC_RENT (src);
602 SPEC_INTN (dest) |= SPEC_INTN (src);
603 SPEC_BANK (dest) |= SPEC_BANK (src);
604 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
605 SPEC_CRTCL (dest) |= SPEC_CRTCL (src);
606 SPEC_ADDR (dest) |= SPEC_ADDR (src);
607 SPEC_OCLS (dest) = SPEC_OCLS (src);
608 SPEC_BLEN (dest) |= SPEC_BLEN (src);
609 SPEC_BSTR (dest) |= SPEC_BSTR (src);
610 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
611 SPEC_NONBANKED (dest) |= SPEC_NONBANKED (src);
612 SPEC_NAKED (dest) |= SPEC_NAKED (src);
614 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
615 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
617 #ifdef LAST_MINUTE_2_3_0_FIX
624 /*------------------------------------------------------------------*/
625 /* cloneSpec - copies the entire spec and returns a new spec */
626 /*------------------------------------------------------------------*/
628 cloneSpec (sym_link * src)
632 /* go thru chain till we find the specifier */
633 while (src && src->class != SPECIFIER)
637 memcpy (spec, src, sizeof (sym_link));
641 /*------------------------------------------------------------------*/
642 /* genSymName - generates and returns a name used for anonymous vars */
643 /*------------------------------------------------------------------*/
645 genSymName (int level)
647 static int gCount = 0;
648 static char gname[SDCC_NAME_MAX + 1];
650 sprintf (gname, "__%04d%04d", level, gCount++);
654 /*------------------------------------------------------------------*/
655 /* getSpec - returns the specifier part from a declaration chain */
656 /*------------------------------------------------------------------*/
658 getSpec (sym_link * p)
663 while (p && !(IS_SPEC (p)))
669 /*------------------------------------------------------------------*/
670 /* newCharLink() - creates an char type */
671 /*------------------------------------------------------------------*/
678 p->class = SPECIFIER;
679 SPEC_NOUN (p) = V_CHAR;
684 /*------------------------------------------------------------------*/
685 /* newFloatLink - a new Float type */
686 /*------------------------------------------------------------------*/
693 p->class = SPECIFIER;
694 SPEC_NOUN (p) = V_FLOAT;
699 /*------------------------------------------------------------------*/
700 /* newLongLink() - new long type */
701 /*------------------------------------------------------------------*/
708 p->class = SPECIFIER;
709 SPEC_NOUN (p) = V_INT;
715 /*------------------------------------------------------------------*/
716 /* newIntLink() - creates an int type */
717 /*------------------------------------------------------------------*/
724 p->class = SPECIFIER;
725 SPEC_NOUN (p) = V_INT;
730 /*------------------------------------------------------------------*/
731 /* getSize - returns size of a type chain in bits */
732 /*------------------------------------------------------------------*/
734 getSize (sym_link * p)
736 /* if nothing return 0 */
740 { /* if this is the specifier then */
741 switch (SPEC_NOUN (p))
742 { /* depending on the specifier type */
744 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
752 return SPEC_STRUCT (p)->size;
758 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
764 /* this is a specifier */
765 switch (DCL_TYPE (p))
770 return DCL_ELEM (p) * getSize (p->next);
787 /*------------------------------------------------------------------*/
788 /* bitsForType - returns # of bits required to store this type */
789 /*------------------------------------------------------------------*/
791 bitsForType (sym_link * p)
793 /* if nothing return 0 */
798 { /* if this is the specifier then */
800 switch (SPEC_NOUN (p))
801 { /* depending on the specifier type */
803 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
805 return FLOATSIZE * 8;
811 return SPEC_STRUCT (p)->size * 8;
817 return SPEC_BLEN (p);
823 /* this is a specifier */
824 switch (DCL_TYPE (p))
829 return DCL_ELEM (p) * getSize (p->next) * 8;
833 return (PTRSIZE * 8);
837 return (FPTRSIZE * 8);
839 return (GPTRSIZE * 8);
846 /*------------------------------------------------------------------*/
847 /* copySymbolChain - copies a symbol chain */
848 /*------------------------------------------------------------------*/
850 copySymbolChain (symbol * src)
857 dest = copySymbol (src);
858 dest->next = copySymbolChain (src->next);
862 /*------------------------------------------------------------------*/
863 /* copySymbol - makes a copy of a symbol */
864 /*------------------------------------------------------------------*/
866 copySymbol (symbol * src)
873 dest = newSymbol (src->name, src->level);
874 memcpy (dest, src, sizeof (symbol));
875 dest->level = src->level;
876 dest->block = src->block;
877 dest->ival = copyIlist (src->ival);
878 dest->type = copyLinkChain (src->type);
879 dest->etype = getSpec (dest->type);
881 dest->args = copyValueChain (src->args);
882 dest->key = src->key;
883 dest->calleeSave = src->calleeSave;
884 dest->allocreq = src->allocreq;
888 /*------------------------------------------------------------------*/
889 /* reverseSyms - reverses the links for a symbol chain */
890 /*------------------------------------------------------------------*/
892 reverseSyms (symbol * sym)
894 symbol *prev, *curr, *next;
909 sym->next = (void *) NULL;
913 /*------------------------------------------------------------------*/
914 /* reverseLink - reverses the links for a type chain */
915 /*------------------------------------------------------------------*/
917 reverseLink (sym_link * type)
919 sym_link *prev, *curr, *next;
934 type->next = (void *) NULL;
938 /*------------------------------------------------------------------*/
939 /* addSymChain - adds a symbol chain to the symboltable */
940 /*------------------------------------------------------------------*/
942 addSymChain (symbol * symHead)
944 symbol *sym = symHead;
947 for (; sym != NULL; sym = sym->next)
950 checkTypeSanity(sym->etype, sym->name);
952 /* if already exists in the symbol table then check if
953 one of them is an extern definition if yes then
954 then check if the type match, if the types match then
955 delete the current entry and add the new entry */
956 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
957 csym->level == sym->level) {
959 /* one definition extern ? */
960 if (IS_EXTERN (csym->etype) || IS_EXTERN (sym->etype)) {
961 /* do types match ? */
962 if (compareType (csym->type, sym->type) != 1) {
964 werror (E_EXTERN_MISMATCH, csym->name);
967 /* delete current entry */
968 deleteSym (SymbolTab, csym, csym->name);
971 werror (E_DUPLICATE, sym->name);
977 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
982 /*------------------------------------------------------------------*/
983 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
984 /*------------------------------------------------------------------*/
986 funcInChain (sym_link * lnk)
997 /*------------------------------------------------------------------*/
998 /* structElemType - returns the type info of a sturct member */
999 /*------------------------------------------------------------------*/
1001 structElemType (sym_link * stype, value * id, value ** argsp)
1003 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
1004 sym_link *type, *etype;
1005 sym_link *petype = getSpec (stype);
1010 /* look for the id */
1013 if (strcmp (fields->rname, id->name) == 0)
1017 *argsp = fields->args;
1019 type = copyLinkChain (fields->type);
1020 etype = getSpec (type);
1021 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1022 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1025 fields = fields->next;
1027 werror (E_NOT_MEMBER, id->name);
1032 /*------------------------------------------------------------------*/
1033 /* getStructElement - returns element of a tructure definition */
1034 /*------------------------------------------------------------------*/
1036 getStructElement (structdef * sdef, symbol * sym)
1040 for (field = sdef->fields; field; field = field->next)
1041 if (strcmp (field->name, sym->name) == 0)
1044 werror (E_NOT_MEMBER, sym->name);
1046 return sdef->fields;
1049 /*------------------------------------------------------------------*/
1050 /* compStructSize - computes the size of a structure */
1051 /*------------------------------------------------------------------*/
1053 compStructSize (int su, structdef * sdef)
1055 int sum = 0, usum = 0;
1059 /* for the identifiers */
1060 loop = sdef->fields;
1063 /* create the internal name for this variable */
1064 sprintf (loop->rname, "_%s", loop->name);
1065 loop->offset = (su == UNION ? sum = 0 : sum);
1066 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1068 /* if this is a bit field */
1071 /* change it to a unsigned bit */
1072 SPEC_NOUN (loop->etype) = V_BIT;
1073 SPEC_USIGN (loop->etype) = 1;
1074 /* check if this fit into the remaining */
1075 /* bits of this byte else align it to the */
1076 /* next byte boundary */
1077 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1078 SPEC_BSTR (loop->etype) = bitOffset;
1079 if ((bitOffset += (loop->bitVar % 8)) == 8)
1082 else /* does not fit */ {
1084 SPEC_BSTR (loop->etype) = bitOffset;
1085 sum += (loop->bitVar / 8);
1086 bitOffset += (loop->bitVar % 8);
1088 /* if this is the last field then pad */
1089 if (!loop->next && bitOffset && bitOffset != 8) {
1096 sum += getSize (loop->type);
1099 /* if function then do the arguments for it */
1100 if (funcInChain (loop->type)) {
1101 processFuncArgs (loop, 1);
1106 /* if this is not a bitfield but the */
1107 /* previous one was and did not take */
1108 /* the whole byte then pad the rest */
1109 if ((loop && !loop->bitVar) && bitOffset) {
1114 /* if union then size = sizeof larget field */
1116 usum = max (usum, sum);
1120 return (su == UNION ? usum : sum);
1123 /*------------------------------------------------------------------*/
1124 /* checkSClass - check the storage class specification */
1125 /*------------------------------------------------------------------*/
1127 checkSClass (symbol * sym)
1129 if (getenv("DEBUG_SANITY")) {
1130 fprintf (stderr, "checkSClass: %s \n", sym->name);
1132 if (strcmp(sym->name, "_testsGlobal")==0) {
1136 /* type is literal can happen foe enums change
1138 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1139 SPEC_SCLS (sym->etype) = S_AUTO;
1141 /* if sfr or sbit then must also be */
1142 /* volatile the initial value will be xlated */
1143 /* to an absolute address */
1144 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1145 SPEC_SCLS (sym->etype) == S_SFR)
1147 SPEC_VOLATILE (sym->etype) = 1;
1148 /* if initial value given */
1151 SPEC_ABSA (sym->etype) = 1;
1152 SPEC_ADDR (sym->etype) =
1153 (int) list2int (sym->ival);
1158 /* if absolute address given then it mark it as
1160 if (IS_ABSOLUTE (sym->etype))
1161 SPEC_VOLATILE (sym->etype) = 1;
1163 /* global variables declared const put into code */
1164 if (sym->level == 0 &&
1165 SPEC_CONST (sym->etype)) {
1166 SPEC_SCLS (sym->etype) = S_CODE;
1169 /* global variable in code space is a constant */
1170 if (sym->level == 0 &&
1171 SPEC_SCLS (sym->etype) == S_CODE &&
1173 SPEC_CONST (sym->etype) = 1;
1176 /* if bit variable then no storage class can be */
1177 /* specified since bit is already a storage */
1178 if (IS_BITVAR (sym->etype) &&
1179 (SPEC_SCLS (sym->etype) != S_FIXED &&
1180 SPEC_SCLS (sym->etype) != S_SBIT &&
1181 SPEC_SCLS (sym->etype) != S_BIT)
1184 werror (E_BITVAR_STORAGE, sym->name);
1185 SPEC_SCLS (sym->etype) = S_FIXED;
1188 /* extern variables cannot be initialized */
1189 if (IS_EXTERN (sym->etype) && sym->ival)
1191 werror (E_EXTERN_INIT, sym->name);
1196 /* if this is an automatic symbol then */
1197 /* storage class will be ignored and */
1198 /* symbol will be allocated on stack/ */
1199 /* data depending on flag */
1201 (options.stackAuto || reentrant) &&
1202 (SPEC_SCLS (sym->etype) != S_AUTO &&
1203 SPEC_SCLS (sym->etype) != S_FIXED &&
1204 SPEC_SCLS (sym->etype) != S_REGISTER &&
1205 SPEC_SCLS (sym->etype) != S_STACK &&
1206 SPEC_SCLS (sym->etype) != S_XSTACK))
1208 werror (E_AUTO_ASSUMED, sym->name);
1209 SPEC_SCLS (sym->etype) = S_AUTO;
1212 /* if this is an atomatic symbol */
1213 if (sym->level && (options.stackAuto || reentrant)) {
1214 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1215 SPEC_SCLS (sym->etype) == S_FIXED ||
1216 SPEC_SCLS (sym->etype) == S_REGISTER ||
1217 SPEC_SCLS (sym->etype) == S_STACK ||
1218 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1219 SPEC_SCLS (sym->etype) = S_AUTO;
1221 /* storage class may only be specified for statics */
1222 if (!IS_STATIC(sym->etype)) {
1223 werror (E_AUTO_ASSUMED, sym->name);
1229 /* automatic symbols cannot be given */
1230 /* an absolute address ignore it */
1232 SPEC_ABSA (sym->etype) &&
1233 (options.stackAuto || reentrant))
1235 werror (E_AUTO_ABSA, sym->name);
1236 SPEC_ABSA (sym->etype) = 0;
1239 /* arrays & pointers cannot be defined for bits */
1240 /* SBITS or SFRs or BIT */
1241 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1242 (SPEC_NOUN (sym->etype) == V_BIT ||
1243 SPEC_NOUN (sym->etype) == V_SBIT ||
1244 SPEC_SCLS (sym->etype) == S_SFR))
1245 werror (E_BIT_ARRAY, sym->name);
1247 /* if this is a bit|sbit then set length & start */
1248 if (SPEC_NOUN (sym->etype) == V_BIT ||
1249 SPEC_NOUN (sym->etype) == V_SBIT)
1251 SPEC_BLEN (sym->etype) = 1;
1252 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);
1265 /* if parameter or local variable then change */
1266 /* the storage class to reflect where the var will go */
1267 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1268 !IS_STATIC(sym->etype))
1270 if (options.stackAuto || (currFunc && IS_RENT (currFunc->etype)))
1272 SPEC_SCLS (sym->etype) = (options.useXstack ?
1273 S_XSTACK : S_STACK);
1277 /* hack-o-matic! I see no reason why the useXstack option should ever
1278 * control this allcoation, but the code was originally that way, and
1279 * changing it for non-390 ports breaks the compiler badly.
1281 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1282 SPEC_SCLS (sym->etype) = (useXdata ?
1288 /*------------------------------------------------------------------*/
1289 /* changePointer - change pointer to functions */
1290 /*------------------------------------------------------------------*/
1292 changePointer (symbol * sym)
1296 /* go thru the chain of declarations */
1297 /* if we find a pointer to a function */
1298 /* unconditionally change it to a ptr */
1300 for (p = sym->type; p; p = p->next)
1302 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1303 DCL_TYPE (p) = GPOINTER;
1304 if (IS_PTR (p) && IS_FUNC (p->next))
1305 DCL_TYPE (p) = CPOINTER;
1309 /*------------------------------------------------------------------*/
1310 /* checkDecl - does semantic validation of a declaration */
1311 /*------------------------------------------------------------------*/
1313 checkDecl (symbol * sym)
1316 checkSClass (sym); /* check the storage class */
1317 changePointer (sym); /* change pointers if required */
1319 /* if this is an array without any dimension
1320 then update the dimension from the initial value */
1321 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1322 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1327 /*------------------------------------------------------------------*/
1328 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1329 /*------------------------------------------------------------------*/
1331 copyLinkChain (sym_link * p)
1333 sym_link *head, *curr, *loop;
1336 head = loop = (curr ? newLink () : (void *) NULL);
1339 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1340 loop->next = (curr->next ? newLink () : (void *) NULL);
1349 /*------------------------------------------------------------------*/
1350 /* cleanUpBlock - cleansup the symbol table specified for all the */
1351 /* symbols in the given block */
1352 /*------------------------------------------------------------------*/
1354 cleanUpBlock (bucket ** table, int block)
1359 /* go thru the entire table */
1360 for (i = 0; i < 256; i++)
1362 for (chain = table[i]; chain; chain = chain->next)
1364 if (chain->block >= block)
1366 deleteSym (table, chain->sym, chain->name);
1372 /*------------------------------------------------------------------*/
1373 /* cleanUpLevel - cleansup the symbol table specified for all the */
1374 /* symbols in the given level */
1375 /*------------------------------------------------------------------*/
1377 cleanUpLevel (bucket ** table, int level)
1382 /* go thru the entire table */
1383 for (i = 0; i < 256; i++)
1385 for (chain = table[i]; chain; chain = chain->next)
1387 if (chain->level >= level)
1389 deleteSym (table, chain->sym, chain->name);
1395 /*------------------------------------------------------------------*/
1396 /* computeType - computes the resultant type from two types */
1397 /*------------------------------------------------------------------*/
1399 computeType (sym_link * type1, sym_link * type2)
1403 sym_link *etype1 = getSpec (type1);
1404 sym_link *etype2 = getSpec (type2);
1406 /* if one of them is a float then result is a float */
1407 /* here we assume that the types passed are okay */
1408 /* and can be cast to one another */
1409 /* which ever is greater in size */
1410 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1411 rType = newFloatLink ();
1413 /* if only one of them is a bit variable
1414 then the other one prevails */
1415 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1416 rType = copyLinkChain (type2);
1417 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1418 rType = copyLinkChain (type1);
1420 /* if one of them is a pointer then that
1423 rType = copyLinkChain (type1);
1424 else if (IS_PTR (type2))
1425 rType = copyLinkChain (type2);
1426 else if (getSize (type1) > getSize (type2))
1427 rType = copyLinkChain (type1);
1429 rType = copyLinkChain (type2);
1431 reType = getSpec (rType);
1433 /* if either of them unsigned then make this unsigned */
1434 if ((SPEC_USIGN (etype1) || SPEC_USIGN (etype2)) && !IS_FLOAT (reType))
1435 SPEC_USIGN (reType) = 1;
1437 /* if result is a literal then make not so */
1438 if (IS_LITERAL (reType))
1439 SPEC_SCLS (reType) = S_REGISTER;
1444 /*------------------------------------------------------------------*/
1445 /* compareType - will do type check return 1 if match */
1446 /*------------------------------------------------------------------*/
1448 compareType (sym_link * dest, sym_link * src)
1459 /* if dest is a declarator then */
1464 if (DCL_TYPE (src) == DCL_TYPE (dest))
1465 return compareType (dest->next, src->next);
1466 else if (IS_PTR (src) && IS_PTR (dest))
1468 else if (IS_PTR (dest) && IS_ARRAY (src))
1470 else if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1471 return -1 * compareType (dest->next, src);
1475 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1481 /* if one is a specifier and the other is not */
1482 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1483 (IS_SPEC (dest) && !IS_SPEC (src)))
1486 /* if one of them is a void then ok */
1487 if (SPEC_NOUN (dest) == V_VOID &&
1488 SPEC_NOUN (src) != V_VOID)
1491 if (SPEC_NOUN (dest) != V_VOID &&
1492 SPEC_NOUN (src) == V_VOID)
1495 /* if they are both bitfields then if the lengths
1496 and starts don't match */
1497 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1498 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1499 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1502 /* it is a specifier */
1503 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1505 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1506 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1507 getSize (dest) == getSize (src))
1509 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1514 else if (IS_STRUCT (dest))
1516 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1521 if (SPEC_LONG (dest) != SPEC_LONG (src))
1524 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1530 /*------------------------------------------------------------------*/
1531 /* inCalleeSaveList - return 1 if found in callee save list */
1532 /*------------------------------------------------------------------*/
1534 inCalleeSaveList (char *s)
1538 for (i = 0; options.calleeSaves[i]; i++)
1539 if (strcmp (options.calleeSaves[i], s) == 0)
1545 /*-----------------------------------------------------------------*/
1546 /* aggregateArgToPointer: change an agggregate type function */
1547 /* argument to a pointer to that type. */
1548 /*-----------------------------------------------------------------*/
1550 aggregateArgToPointer (value * val)
1552 if (IS_AGGREGATE (val->type))
1554 /* if this is a structure */
1555 /* then we need to add a new link */
1556 if (IS_STRUCT (val->type))
1558 /* first lets add DECLARATOR type */
1559 sym_link *p = val->type;
1561 werror (W_STRUCT_AS_ARG, val->name);
1562 val->type = newLink ();
1563 val->type->next = p;
1566 /* change to a pointer depending on the */
1567 /* storage class specified */
1568 switch (SPEC_SCLS (val->etype))
1571 DCL_TYPE (val->type) = IPOINTER;
1574 DCL_TYPE (val->type) = PPOINTER;
1577 if (TARGET_IS_DS390)
1579 /* The AUTO and REGISTER classes should probably
1580 * also become generic pointers, but I haven't yet
1581 * devised a test case for that.
1583 DCL_TYPE (val->type) = GPOINTER;
1590 DCL_TYPE (val->type) = POINTER;
1593 DCL_TYPE (val->type) = CPOINTER;
1596 DCL_TYPE (val->type) = FPOINTER;
1599 DCL_TYPE (val->type) = EEPPOINTER;
1602 DCL_TYPE (val->type) = GPOINTER;
1605 /* is there is a symbol associated then */
1606 /* change the type of the symbol as well */
1609 val->sym->type = copyLinkChain (val->type);
1610 val->sym->etype = getSpec (val->sym->type);
1614 /*------------------------------------------------------------------*/
1615 /* checkFunction - does all kinds of check on a function */
1616 /*------------------------------------------------------------------*/
1618 checkFunction (symbol * sym)
1621 value *exargs, *acargs;
1625 if (getenv("DEBUG_SANITY")) {
1626 fprintf (stderr, "checkFunction: %s ", sym->name);
1629 /* make sure the type is complete and sane */
1630 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1632 /* if not type then some kind of error */
1636 /* if the function has no type then make it return int */
1637 if (!sym->type->next)
1638 sym->type->next = sym->etype = newIntLink ();
1640 /* function cannot return aggregate */
1641 if (IS_AGGREGATE (sym->type->next))
1643 werror (E_FUNC_AGGR, sym->name);
1647 /* function cannot return bit */
1648 if (IS_BITVAR (sym->type->next))
1650 werror (E_FUNC_BIT, sym->name);
1654 /* check if this function is defined as calleeSaves
1655 then mark it as such */
1656 sym->calleeSave = inCalleeSaveList (sym->name);
1658 /* if interrupt service routine */
1659 /* then it cannot have arguments */
1660 if (sym->args && IS_ISR (sym->etype) && !IS_VOID (sym->args->type))
1662 werror (E_INT_ARGS, sym->name);
1666 if (!(csym = findSym (SymbolTab, sym, sym->name)))
1667 return 1; /* not defined nothing more to check */
1669 /* check if body already present */
1670 if (csym && csym->fbody)
1672 werror (E_FUNC_BODY, sym->name);
1676 /* check the return value type */
1677 if (compareType (csym->type, sym->type) <= 0)
1679 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1680 werror (E_CONTINUE, "previous definition type ");
1681 printTypeChain (csym->type, stderr);
1682 fprintf (stderr, "\n");
1683 werror (E_CONTINUE, "current definition type ");
1684 printTypeChain (sym->type, stderr);
1685 fprintf (stderr, "\n");
1689 if (SPEC_INTRTN (csym->etype) != SPEC_INTRTN (sym->etype))
1691 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1694 if (SPEC_BANK (csym->etype) != SPEC_BANK (sym->etype))
1696 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1699 if (SPEC_NAKED (csym->etype) != SPEC_NAKED (sym->etype))
1701 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1704 /* compare expected agrs with actual args */
1705 exargs = csym->args;
1708 /* for all the expected args do */
1711 exargs = exargs->next, acargs = acargs->next, argCnt++)
1713 if (getenv("DEBUG_SANITY")) {
1714 fprintf (stderr, "checkFunction: %s ", exargs->name);
1716 /* make sure the type is complete and sane */
1717 checkTypeSanity(exargs->etype, exargs->name);
1719 /* If the actual argument is an array, any prototype
1720 * will have modified it to a pointer. Duplicate that
1723 if (IS_AGGREGATE (acargs->type))
1725 checkValue = copyValue (acargs);
1726 aggregateArgToPointer (checkValue);
1730 checkValue = acargs;
1733 if (compareType (exargs->type, checkValue->type) <= 0)
1735 werror (E_ARG_TYPE, argCnt);
1740 /* if one them ended we have a problem */
1741 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1742 (!exargs && acargs && !IS_VOID (acargs->type)))
1743 werror (E_ARG_COUNT);
1745 /* replace with this defition */
1746 sym->cdef = csym->cdef;
1747 deleteSym (SymbolTab, csym, csym->name);
1748 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1749 if (IS_EXTERN (csym->etype) && !
1750 IS_EXTERN (sym->etype))
1752 addSet (&publics, sym);
1757 /*-----------------------------------------------------------------*/
1758 /* processFuncArgs - does some processing with function args */
1759 /*-----------------------------------------------------------------*/
1761 processFuncArgs (symbol * func, int ignoreName)
1766 /* if this function has variable argument list */
1767 /* then make the function a reentrant one */
1769 SPEC_RENT (func->etype) = 1;
1771 /* check if this function is defined as calleeSaves
1772 then mark it as such */
1773 func->calleeSave = inCalleeSaveList (func->name);
1775 val = func->args; /* loop thru all the arguments */
1777 /* if it is void then remove parameters */
1778 if (val && IS_VOID (val->type))
1784 /* reset regparm for the port */
1785 (*port->reset_regparms) ();
1786 /* if any of the arguments is an aggregate */
1787 /* change it to pointer to the same type */
1790 /* mark it as a register parameter if
1791 the function does not have VA_ARG
1792 and as port dictates */
1793 if (!func->hasVargs &&
1794 (*port->reg_parm) (val->type))
1796 SPEC_REGPARM (val->etype) = 1;
1799 if (IS_AGGREGATE (val->type))
1801 aggregateArgToPointer (val);
1807 /* if this is an internal generated function call */
1809 /* ignore --stack-auto for this one, we don't know how it is compiled */
1810 /* simply trust on --int-long-reent or --float-reent */
1811 if (IS_RENT(func->etype)) {
1815 /* if this function is reentrant or */
1816 /* automatics r 2b stacked then nothing */
1817 if (IS_RENT (func->etype) || options.stackAuto)
1826 /* if a symbolname is not given */
1827 /* synthesize a variable name */
1831 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1832 val->sym = newSymbol (val->name, 1);
1833 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1834 val->sym->type = copyLinkChain (val->type);
1835 val->sym->etype = getSpec (val->sym->type);
1836 val->sym->_isparm = 1;
1837 strcpy (val->sym->rname, val->name);
1838 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1839 SPEC_STAT (func->etype);
1840 addSymChain (val->sym);
1843 else /* symbol name given create synth name */
1846 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1847 strcpy (val->sym->rname, val->name);
1848 val->sym->_isparm = 1;
1849 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1850 (options.model != MODEL_SMALL ? xdata : data);
1851 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1852 SPEC_STAT (func->etype);
1858 /*-----------------------------------------------------------------*/
1859 /* isSymbolEqual - compares two symbols return 1 if they match */
1860 /*-----------------------------------------------------------------*/
1862 isSymbolEqual (symbol * dest, symbol * src)
1864 /* if pointers match then equal */
1868 /* if one of them is null then don't match */
1872 /* if both of them have rname match on rname */
1873 if (dest->rname[0] && src->rname[0])
1874 return (!strcmp (dest->rname, src->rname));
1876 /* otherwise match on name */
1877 return (!strcmp (dest->name, src->name));
1880 void PT(sym_link *type)
1882 printTypeChain(type,0);
1884 /*-----------------------------------------------------------------*/
1885 /* printTypeChain - prints the type chain in human readable form */
1886 /*-----------------------------------------------------------------*/
1888 printTypeChain (sym_link * type, FILE * of)
1902 if (DCL_PTR_VOLATILE(type)) {
1903 fprintf (of, "volatile ");
1905 switch (DCL_TYPE (type))
1908 fprintf (of, "function ");
1911 fprintf (of, "_generic * ");
1912 if (DCL_PTR_CONST (type))
1913 fprintf (of, "const ");
1916 fprintf (of, "_code * ");
1917 if (DCL_PTR_CONST (type))
1918 fprintf (of, "const ");
1921 fprintf (of, "_far * ");
1922 if (DCL_PTR_CONST (type))
1923 fprintf (of, "const ");
1926 fprintf (of, "_eeprom * ");
1927 if (DCL_PTR_CONST (type))
1928 fprintf (of, "const ");
1932 fprintf (of, "_near * ");
1933 if (DCL_PTR_CONST (type))
1934 fprintf (of, "const ");
1937 fprintf (of, "_idata *");
1938 if (DCL_PTR_CONST (type))
1939 fprintf (of, "const ");
1942 fprintf (of, "_pdata *");
1943 if (DCL_PTR_CONST (type))
1944 fprintf (of, "const ");
1947 fprintf (of, " _unkown *");
1948 if (DCL_PTR_CONST (type))
1949 fprintf (of, "const ");
1952 fprintf (of, "array of ");
1958 if (SPEC_VOLATILE (type))
1959 fprintf (of, "volatile ");
1960 if (SPEC_USIGN (type))
1961 fprintf (of, "unsigned ");
1962 if (SPEC_CONST (type))
1963 fprintf (of, "const ");
1965 switch (SPEC_NOUN (type))
1969 fprintf (of, "long ");
1970 fprintf (of, "int ");
1974 fprintf (of, "char ");
1978 fprintf (of, "void ");
1982 fprintf (of, "float ");
1986 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
1990 fprintf (of, "sbit ");
1994 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
1998 fprintf (of, "double ");
2002 fprintf (of, "unknown type ");
2012 /*-----------------------------------------------------------------*/
2013 /* cdbTypeInfo - print the type information for debugger */
2014 /*-----------------------------------------------------------------*/
2016 cdbTypeInfo (sym_link * type, FILE * of)
2018 fprintf (of, "{%d}", getSize (type));
2023 switch (DCL_TYPE (type))
2026 fprintf (of, "DF,");
2029 fprintf (of, "DG,");
2032 fprintf (of, "DC,");
2035 fprintf (of, "DX,");
2038 fprintf (of, "DD,");
2041 fprintf (of, "DI,");
2044 fprintf (of, "DP,");
2047 fprintf (of, "DA,");
2050 fprintf (of, "DA%d,", DCL_ELEM (type));
2058 switch (SPEC_NOUN (type))
2080 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2088 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2095 if (SPEC_USIGN (type))
2103 /*-----------------------------------------------------------------*/
2104 /* cdbSymbol - prints a symbol & its type information for debugger */
2105 /*-----------------------------------------------------------------*/
2107 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2119 fprintf (of, "S:"); /* symbol record */
2120 /* if this is not a structure symbol then
2121 we need to figure out the scope information */
2127 if (IS_STATIC (sym->etype))
2128 fprintf (of, "F%s$", moduleName); /* scope is file */
2130 fprintf (of, "G$"); /* scope is global */
2133 /* symbol is local */
2134 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2137 fprintf (of, "S$"); /* scope is structure */
2139 /* print the name, & mangled name */
2140 fprintf (of, "%s$%d$%d(", sym->name,
2141 sym->level, sym->block);
2143 cdbTypeInfo (sym->type, of);
2146 /* print the address space */
2147 map = SPEC_OCLS (sym->etype);
2148 fprintf (of, "%c,%d,%d",
2149 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2151 /* if assigned to registers then output register names */
2152 /* if this is a function then print
2153 if is it an interrupt routine & interrupt number
2154 and the register bank it is using */
2156 fprintf (of, ",%d,%d,%d", SPEC_INTRTN (sym->etype),
2157 SPEC_INTN (sym->etype), SPEC_BANK (sym->etype));
2158 /* alternate location to find this symbol @ : eg registers
2165 /*-----------------------------------------------------------------*/
2166 /* cdbStruct - print a structure for debugger */
2167 /*-----------------------------------------------------------------*/
2169 cdbStruct (structdef * sdef, int block, FILE * of,
2170 int inStruct, char *tag)
2175 /* if block # then must have function scope */
2176 fprintf (of, "F%s$", moduleName);
2177 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2178 for (sym = sdef->fields; sym; sym = sym->next)
2180 fprintf (of, "({%d}", sym->offset);
2181 cdbSymbol (sym, of, TRUE, FALSE);
2189 /*------------------------------------------------------------------*/
2190 /* cdbStructBlock - calls struct printing for a blcks */
2191 /*------------------------------------------------------------------*/
2193 cdbStructBlock (int block, FILE * of)
2196 bucket **table = StructTab;
2200 /* go thru the entire table */
2201 for (i = 0; i < 256; i++)
2203 for (chain = table[i]; chain; chain = chain->next)
2205 if (chain->block >= block)
2207 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2213 /*-----------------------------------------------------------------*/
2214 /* powof2 - returns power of two for the number if number is pow 2 */
2215 /*-----------------------------------------------------------------*/
2217 powof2 (unsigned long num)
2230 if (n1s > 1 || nshifts == 0)
2246 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2247 symbol *__muldiv[3][3][2];
2248 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2249 sym_link *__multypes[3][2];
2250 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2251 symbol *__conv[2][3][2];
2252 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2253 symbol *__rlrr[2][3][2];
2255 sym_link *floatType;
2258 _mangleFunctionName(char *in)
2260 if (port->getMangledFunctionName)
2262 return port->getMangledFunctionName(in);
2270 /*-----------------------------------------------------------------*/
2271 /* initCSupport - create functions for C support routines */
2272 /*-----------------------------------------------------------------*/
2276 const char *smuldivmod[] =
2280 const char *sbwd[] =
2282 "char", "int", "long"
2288 const char *srlrr[] =
2293 int bwd, su, muldivmod, tofrom, rlrr;
2295 floatType = newFloatLink ();
2297 for (bwd = 0; bwd < 3; bwd++)
2314 __multypes[bwd][0] = l;
2315 __multypes[bwd][1] = copyLinkChain (l);
2316 SPEC_USIGN (__multypes[bwd][1]) = 1;
2319 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2320 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2321 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2322 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2323 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2324 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2325 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2326 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2327 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2328 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2330 for (tofrom = 0; tofrom < 2; tofrom++)
2332 for (bwd = 0; bwd < 3; bwd++)
2334 for (su = 0; su < 2; su++)
2338 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2339 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2343 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2344 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2350 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2352 for (bwd = 0; bwd < 3; bwd++)
2354 for (su = 0; su < 2; su++)
2356 sprintf (buffer, "_%s%s%s",
2357 smuldivmod[muldivmod],
2360 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2361 SPEC_NONBANKED (__muldiv[muldivmod][bwd][su]->etype) = 1;
2366 for (rlrr = 0; rlrr < 2; rlrr++)
2368 for (bwd = 0; bwd < 3; bwd++)
2370 for (su = 0; su < 2; su++)
2372 sprintf (buffer, "_%s%s%s",
2376 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2377 SPEC_NONBANKED (__rlrr[rlrr][bwd][su]->etype) = 1;