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;
948 for (; sym != NULL; sym = sym->next)
952 /* if already exists in the symbol table then check if
953 the previous was 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)
960 /* previous definition extern ? */
961 if (IS_EXTERN (csym->etype))
963 /* do types match ? */
964 if (compareType (csym->type, sym->type) != 1)
966 werror (E_DUPLICATE, csym->name);
968 /* delete current entry */
969 deleteSym (SymbolTab, csym, csym->name);
971 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
973 else /* not extern */
974 werror (E_DUPLICATE, sym->name);
978 /* check if previously defined */
979 if (csym && csym->level == sym->level)
981 /* if the previous one was declared as extern */
982 /* then check the type with the current one */
983 if (IS_EXTERN (csym->etype))
985 if (compareType (csym->type, sym->type) <= 0)
986 werror (W_EXTERN_MISMATCH, csym->name);
989 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
994 /*------------------------------------------------------------------*/
995 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
996 /*------------------------------------------------------------------*/
998 funcInChain (sym_link * lnk)
1009 /*------------------------------------------------------------------*/
1010 /* structElemType - returns the type info of a sturct member */
1011 /*------------------------------------------------------------------*/
1013 structElemType (sym_link * stype, value * id, value ** argsp)
1015 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
1016 sym_link *type, *etype;
1017 sym_link *petype = getSpec (stype);
1022 /* look for the id */
1025 if (strcmp (fields->rname, id->name) == 0)
1029 *argsp = fields->args;
1031 type = copyLinkChain (fields->type);
1032 etype = getSpec (type);
1033 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1034 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1037 fields = fields->next;
1039 werror (E_NOT_MEMBER, id->name);
1044 /*------------------------------------------------------------------*/
1045 /* getStructElement - returns element of a tructure definition */
1046 /*------------------------------------------------------------------*/
1048 getStructElement (structdef * sdef, symbol * sym)
1052 for (field = sdef->fields; field; field = field->next)
1053 if (strcmp (field->name, sym->name) == 0)
1056 werror (E_NOT_MEMBER, sym->name);
1058 return sdef->fields;
1061 /*------------------------------------------------------------------*/
1062 /* compStructSize - computes the size of a structure */
1063 /*------------------------------------------------------------------*/
1065 compStructSize (int su, structdef * sdef)
1067 int sum = 0, usum = 0;
1071 /* for the identifiers */
1072 loop = sdef->fields;
1075 /* create the internal name for this variable */
1076 sprintf (loop->rname, "_%s", loop->name);
1077 loop->offset = (su == UNION ? sum = 0 : sum);
1078 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1080 /* if this is a bit field */
1083 /* change it to a unsigned bit */
1084 SPEC_NOUN (loop->etype) = V_BIT;
1085 SPEC_USIGN (loop->etype) = 1;
1086 /* check if this fit into the remaining */
1087 /* bits of this byte else align it to the */
1088 /* next byte boundary */
1089 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1090 SPEC_BSTR (loop->etype) = bitOffset;
1091 if ((bitOffset += (loop->bitVar % 8)) == 8)
1094 else /* does not fit */ {
1096 SPEC_BSTR (loop->etype) = bitOffset;
1097 sum += (loop->bitVar / 8);
1098 bitOffset += (loop->bitVar % 8);
1100 /* if this is the last field then pad */
1101 if (!loop->next && bitOffset && bitOffset != 8) {
1108 sum += getSize (loop->type);
1111 /* if function then do the arguments for it */
1112 if (funcInChain (loop->type)) {
1113 processFuncArgs (loop, 1);
1118 /* if this is not a bitfield but the */
1119 /* previous one was and did not take */
1120 /* the whole byte then pad the rest */
1121 if ((loop && !loop->bitVar) && bitOffset) {
1126 /* if union then size = sizeof larget field */
1128 usum = max (usum, sum);
1132 return (su == UNION ? usum : sum);
1135 /*------------------------------------------------------------------*/
1136 /* checkSClass - check the storage class specification */
1137 /*------------------------------------------------------------------*/
1139 checkSClass (symbol * sym)
1141 if (getenv("DEBUG_SANITY")) {
1142 fprintf (stderr, "checkSClass: %s \n", sym->name);
1144 if (strcmp(sym->name, "_testsGlobal")==0) {
1148 /* type is literal can happen foe enums change
1150 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1151 SPEC_SCLS (sym->etype) = S_AUTO;
1153 /* if sfr or sbit then must also be */
1154 /* volatile the initial value will be xlated */
1155 /* to an absolute address */
1156 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1157 SPEC_SCLS (sym->etype) == S_SFR)
1159 SPEC_VOLATILE (sym->etype) = 1;
1160 /* if initial value given */
1163 SPEC_ABSA (sym->etype) = 1;
1164 SPEC_ADDR (sym->etype) =
1165 (int) list2int (sym->ival);
1170 /* if absolute address given then it mark it as
1172 if (IS_ABSOLUTE (sym->etype))
1173 SPEC_VOLATILE (sym->etype) = 1;
1175 /* global variables declared const put into code */
1176 if (sym->level == 0 &&
1177 SPEC_CONST (sym->etype)) {
1178 SPEC_SCLS (sym->etype) = S_CODE;
1181 /* global variable in code space is a constant */
1182 if (sym->level == 0 &&
1183 SPEC_SCLS (sym->etype) == S_CODE &&
1185 SPEC_CONST (sym->etype) = 1;
1188 /* if bit variable then no storage class can be */
1189 /* specified since bit is already a storage */
1190 if (IS_BITVAR (sym->etype) &&
1191 (SPEC_SCLS (sym->etype) != S_FIXED &&
1192 SPEC_SCLS (sym->etype) != S_SBIT &&
1193 SPEC_SCLS (sym->etype) != S_BIT)
1196 werror (E_BITVAR_STORAGE, sym->name);
1197 SPEC_SCLS (sym->etype) = S_FIXED;
1200 /* extern variables cannot be initialized */
1201 if (IS_EXTERN (sym->etype) && sym->ival)
1203 werror (E_EXTERN_INIT, sym->name);
1208 /* if this is an automatic symbol then */
1209 /* storage class will be ignored and */
1210 /* symbol will be allocated on stack/ */
1211 /* data depending on flag */
1213 (options.stackAuto || reentrant) &&
1214 (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))
1220 werror (E_AUTO_ASSUMED, sym->name);
1221 SPEC_SCLS (sym->etype) = S_AUTO;
1224 /* if this is an atomatic symbol */
1225 if (sym->level && (options.stackAuto || reentrant)) {
1226 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1227 SPEC_SCLS (sym->etype) == S_FIXED ||
1228 SPEC_SCLS (sym->etype) == S_REGISTER ||
1229 SPEC_SCLS (sym->etype) == S_STACK ||
1230 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1231 SPEC_SCLS (sym->etype) = S_AUTO;
1233 /* storage class may only be specified for statics */
1234 if (!IS_STATIC(sym->etype)) {
1235 werror (E_AUTO_ASSUMED, sym->name);
1241 /* automatic symbols cannot be given */
1242 /* an absolute address ignore it */
1244 SPEC_ABSA (sym->etype) &&
1245 (options.stackAuto || reentrant))
1247 werror (E_AUTO_ABSA, sym->name);
1248 SPEC_ABSA (sym->etype) = 0;
1251 /* arrays & pointers cannot be defined for bits */
1252 /* SBITS or SFRs or BIT */
1253 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1254 (SPEC_NOUN (sym->etype) == V_BIT ||
1255 SPEC_NOUN (sym->etype) == V_SBIT ||
1256 SPEC_SCLS (sym->etype) == S_SFR))
1257 werror (E_BIT_ARRAY, sym->name);
1259 /* if this is a bit|sbit then set length & start */
1260 if (SPEC_NOUN (sym->etype) == V_BIT ||
1261 SPEC_NOUN (sym->etype) == V_SBIT)
1263 SPEC_BLEN (sym->etype) = 1;
1264 SPEC_BSTR (sym->etype) = 0;
1267 /* variables declared in CODE space must have */
1268 /* initializers if not an extern */
1269 if (SPEC_SCLS (sym->etype) == S_CODE &&
1270 sym->ival == NULL &&
1272 port->mem.code_ro &&
1273 !IS_EXTERN (sym->etype) &&
1274 !funcInChain (sym->type))
1275 werror (E_CODE_NO_INIT, sym->name);
1277 /* if parameter or local variable then change */
1278 /* the storage class to reflect where the var will go */
1279 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1280 !IS_STATIC(sym->etype))
1282 if (options.stackAuto || (currFunc && IS_RENT (currFunc->etype)))
1284 SPEC_SCLS (sym->etype) = (options.useXstack ?
1285 S_XSTACK : S_STACK);
1289 /* hack-o-matic! I see no reason why the useXstack option should ever
1290 * control this allcoation, but the code was originally that way, and
1291 * changing it for non-390 ports breaks the compiler badly.
1293 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1294 SPEC_SCLS (sym->etype) = (useXdata ?
1300 /*------------------------------------------------------------------*/
1301 /* changePointer - change pointer to functions */
1302 /*------------------------------------------------------------------*/
1304 changePointer (symbol * sym)
1308 /* go thru the chain of declarations */
1309 /* if we find a pointer to a function */
1310 /* unconditionally change it to a ptr */
1312 for (p = sym->type; p; p = p->next)
1314 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1315 DCL_TYPE (p) = GPOINTER;
1316 if (IS_PTR (p) && IS_FUNC (p->next))
1317 DCL_TYPE (p) = CPOINTER;
1321 /*------------------------------------------------------------------*/
1322 /* checkDecl - does semantic validation of a declaration */
1323 /*------------------------------------------------------------------*/
1325 checkDecl (symbol * sym)
1328 checkSClass (sym); /* check the storage class */
1329 changePointer (sym); /* change pointers if required */
1331 /* if this is an array without any dimension
1332 then update the dimension from the initial value */
1333 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1334 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1339 /*------------------------------------------------------------------*/
1340 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1341 /*------------------------------------------------------------------*/
1343 copyLinkChain (sym_link * p)
1345 sym_link *head, *curr, *loop;
1348 head = loop = (curr ? newLink () : (void *) NULL);
1351 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1352 loop->next = (curr->next ? newLink () : (void *) NULL);
1361 /*------------------------------------------------------------------*/
1362 /* cleanUpBlock - cleansup the symbol table specified for all the */
1363 /* symbols in the given block */
1364 /*------------------------------------------------------------------*/
1366 cleanUpBlock (bucket ** table, int block)
1371 /* go thru the entire table */
1372 for (i = 0; i < 256; i++)
1374 for (chain = table[i]; chain; chain = chain->next)
1376 if (chain->block >= block)
1378 deleteSym (table, chain->sym, chain->name);
1384 /*------------------------------------------------------------------*/
1385 /* cleanUpLevel - cleansup the symbol table specified for all the */
1386 /* symbols in the given level */
1387 /*------------------------------------------------------------------*/
1389 cleanUpLevel (bucket ** table, int level)
1394 /* go thru the entire table */
1395 for (i = 0; i < 256; i++)
1397 for (chain = table[i]; chain; chain = chain->next)
1399 if (chain->level >= level)
1401 deleteSym (table, chain->sym, chain->name);
1407 /*------------------------------------------------------------------*/
1408 /* computeType - computes the resultant type from two types */
1409 /*------------------------------------------------------------------*/
1411 computeType (sym_link * type1, sym_link * type2)
1415 sym_link *etype1 = getSpec (type1);
1416 sym_link *etype2 = getSpec (type2);
1418 /* if one of them is a float then result is a float */
1419 /* here we assume that the types passed are okay */
1420 /* and can be cast to one another */
1421 /* which ever is greater in size */
1422 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1423 rType = newFloatLink ();
1425 /* if only one of them is a bit variable
1426 then the other one prevails */
1427 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1428 rType = copyLinkChain (type2);
1429 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1430 rType = copyLinkChain (type1);
1432 /* if one of them is a pointer then that
1435 rType = copyLinkChain (type1);
1436 else if (IS_PTR (type2))
1437 rType = copyLinkChain (type2);
1438 else if (getSize (type1) > getSize (type2))
1439 rType = copyLinkChain (type1);
1441 rType = copyLinkChain (type2);
1443 reType = getSpec (rType);
1445 /* if either of them unsigned then make this unsigned */
1446 if ((SPEC_USIGN (etype1) || SPEC_USIGN (etype2)) && !IS_FLOAT (reType))
1447 SPEC_USIGN (reType) = 1;
1449 /* if result is a literal then make not so */
1450 if (IS_LITERAL (reType))
1451 SPEC_SCLS (reType) = S_REGISTER;
1456 /*------------------------------------------------------------------*/
1457 /* compareType - will do type check return 1 if match */
1458 /*------------------------------------------------------------------*/
1460 compareType (sym_link * dest, sym_link * src)
1471 /* if dest is a declarator then */
1476 if (DCL_TYPE (src) == DCL_TYPE (dest))
1477 return compareType (dest->next, src->next);
1478 else if (IS_PTR (src) && IS_PTR (dest))
1480 else if (IS_PTR (dest) && IS_ARRAY (src))
1482 else if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1483 return -1 * compareType (dest->next, src);
1487 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1493 /* if one is a specifier and the other is not */
1494 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1495 (IS_SPEC (dest) && !IS_SPEC (src)))
1498 /* if one of them is a void then ok */
1499 if (SPEC_NOUN (dest) == V_VOID &&
1500 SPEC_NOUN (src) != V_VOID)
1503 if (SPEC_NOUN (dest) != V_VOID &&
1504 SPEC_NOUN (src) == V_VOID)
1507 /* if they are both bitfields then if the lengths
1508 and starts don't match */
1509 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1510 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1511 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1514 /* it is a specifier */
1515 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1517 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1518 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1519 getSize (dest) == getSize (src))
1521 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1526 else if (IS_STRUCT (dest))
1528 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1533 if (SPEC_LONG (dest) != SPEC_LONG (src))
1536 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1542 /*------------------------------------------------------------------*/
1543 /* inCalleeSaveList - return 1 if found in callee save list */
1544 /*------------------------------------------------------------------*/
1546 inCalleeSaveList (char *s)
1550 for (i = 0; options.calleeSaves[i]; i++)
1551 if (strcmp (options.calleeSaves[i], s) == 0)
1557 /*-----------------------------------------------------------------*/
1558 /* aggregateArgToPointer: change an agggregate type function */
1559 /* argument to a pointer to that type. */
1560 /*-----------------------------------------------------------------*/
1562 aggregateArgToPointer (value * val)
1564 if (IS_AGGREGATE (val->type))
1566 /* if this is a structure */
1567 /* then we need to add a new link */
1568 if (IS_STRUCT (val->type))
1570 /* first lets add DECLARATOR type */
1571 sym_link *p = val->type;
1573 werror (W_STRUCT_AS_ARG, val->name);
1574 val->type = newLink ();
1575 val->type->next = p;
1578 /* change to a pointer depending on the */
1579 /* storage class specified */
1580 switch (SPEC_SCLS (val->etype))
1583 DCL_TYPE (val->type) = IPOINTER;
1586 DCL_TYPE (val->type) = PPOINTER;
1589 if (TARGET_IS_DS390)
1591 /* The AUTO and REGISTER classes should probably
1592 * also become generic pointers, but I haven't yet
1593 * devised a test case for that.
1595 DCL_TYPE (val->type) = GPOINTER;
1602 DCL_TYPE (val->type) = POINTER;
1605 DCL_TYPE (val->type) = CPOINTER;
1608 DCL_TYPE (val->type) = FPOINTER;
1611 DCL_TYPE (val->type) = EEPPOINTER;
1614 DCL_TYPE (val->type) = GPOINTER;
1617 /* is there is a symbol associated then */
1618 /* change the type of the symbol as well */
1621 val->sym->type = copyLinkChain (val->type);
1622 val->sym->etype = getSpec (val->sym->type);
1626 /*------------------------------------------------------------------*/
1627 /* checkFunction - does all kinds of check on a function */
1628 /*------------------------------------------------------------------*/
1630 checkFunction (symbol * sym)
1633 value *exargs, *acargs;
1637 if (getenv("DEBUG_SANITY")) {
1638 fprintf (stderr, "checkFunction: %s ", sym->name);
1641 /* make sure the type is complete and sane */
1642 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1644 /* if not type then some kind of error */
1648 /* if the function has no type then make it return int */
1649 if (!sym->type->next)
1650 sym->type->next = sym->etype = newIntLink ();
1652 /* function cannot return aggregate */
1653 if (IS_AGGREGATE (sym->type->next))
1655 werror (E_FUNC_AGGR, sym->name);
1659 /* function cannot return bit */
1660 if (IS_BITVAR (sym->type->next))
1662 werror (E_FUNC_BIT, sym->name);
1666 /* check if this function is defined as calleeSaves
1667 then mark it as such */
1668 sym->calleeSave = inCalleeSaveList (sym->name);
1670 /* if interrupt service routine */
1671 /* then it cannot have arguments */
1672 if (sym->args && IS_ISR (sym->etype) && !IS_VOID (sym->args->type))
1674 werror (E_INT_ARGS, sym->name);
1678 if (!(csym = findSym (SymbolTab, sym, sym->name)))
1679 return 1; /* not defined nothing more to check */
1681 /* check if body already present */
1682 if (csym && csym->fbody)
1684 werror (E_FUNC_BODY, sym->name);
1688 /* check the return value type */
1689 if (compareType (csym->type, sym->type) <= 0)
1691 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1692 werror (E_CONTINUE, "previous definition type ");
1693 printTypeChain (csym->type, stderr);
1694 fprintf (stderr, "\n");
1695 werror (E_CONTINUE, "current definition type ");
1696 printTypeChain (sym->type, stderr);
1697 fprintf (stderr, "\n");
1701 if (SPEC_INTRTN (csym->etype) != SPEC_INTRTN (sym->etype))
1703 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1706 if (SPEC_BANK (csym->etype) != SPEC_BANK (sym->etype))
1708 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1711 if (SPEC_NAKED (csym->etype) != SPEC_NAKED (sym->etype))
1713 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1716 /* compare expected agrs with actual args */
1717 exargs = csym->args;
1720 /* for all the expected args do */
1723 exargs = exargs->next, acargs = acargs->next, argCnt++)
1725 if (getenv("DEBUG_SANITY")) {
1726 fprintf (stderr, "checkFunction: %s ", exargs->name);
1728 /* make sure the type is complete and sane */
1729 checkTypeSanity(exargs->etype, exargs->name);
1731 /* If the actual argument is an array, any prototype
1732 * will have modified it to a pointer. Duplicate that
1735 if (IS_AGGREGATE (acargs->type))
1737 checkValue = copyValue (acargs);
1738 aggregateArgToPointer (checkValue);
1742 checkValue = acargs;
1745 if (compareType (exargs->type, checkValue->type) <= 0)
1747 werror (E_ARG_TYPE, argCnt);
1752 /* if one them ended we have a problem */
1753 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1754 (!exargs && acargs && !IS_VOID (acargs->type)))
1755 werror (E_ARG_COUNT);
1757 /* replace with this defition */
1758 sym->cdef = csym->cdef;
1759 deleteSym (SymbolTab, csym, csym->name);
1760 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1761 if (IS_EXTERN (csym->etype) && !
1762 IS_EXTERN (sym->etype))
1764 addSet (&publics, sym);
1769 /*-----------------------------------------------------------------*/
1770 /* processFuncArgs - does some processing with function args */
1771 /*-----------------------------------------------------------------*/
1773 processFuncArgs (symbol * func, int ignoreName)
1778 /* if this function has variable argument list */
1779 /* then make the function a reentrant one */
1781 SPEC_RENT (func->etype) = 1;
1783 /* check if this function is defined as calleeSaves
1784 then mark it as such */
1785 func->calleeSave = inCalleeSaveList (func->name);
1787 val = func->args; /* loop thru all the arguments */
1789 /* if it is void then remove parameters */
1790 if (val && IS_VOID (val->type))
1796 /* reset regparm for the port */
1797 (*port->reset_regparms) ();
1798 /* if any of the arguments is an aggregate */
1799 /* change it to pointer to the same type */
1802 /* mark it as a register parameter if
1803 the function does not have VA_ARG
1804 and as port dictates */
1805 if (!func->hasVargs &&
1806 (*port->reg_parm) (val->type))
1808 SPEC_REGPARM (val->etype) = 1;
1811 if (IS_AGGREGATE (val->type))
1813 aggregateArgToPointer (val);
1819 /* if this is an internal generated function call */
1821 /* ignore --stack-auto for this one, we don't know how it is compiled */
1822 /* simply trust on --int-long-reent or --float-reent */
1823 if (IS_RENT(func->etype)) {
1827 /* if this function is reentrant or */
1828 /* automatics r 2b stacked then nothing */
1829 if (IS_RENT (func->etype) || options.stackAuto)
1838 /* if a symbolname is not given */
1839 /* synthesize a variable name */
1843 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1844 val->sym = newSymbol (val->name, 1);
1845 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1846 val->sym->type = copyLinkChain (val->type);
1847 val->sym->etype = getSpec (val->sym->type);
1848 val->sym->_isparm = 1;
1849 strcpy (val->sym->rname, val->name);
1850 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1851 SPEC_STAT (func->etype);
1852 addSymChain (val->sym);
1855 else /* symbol name given create synth name */
1858 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1859 strcpy (val->sym->rname, val->name);
1860 val->sym->_isparm = 1;
1861 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1862 (options.model != MODEL_SMALL ? xdata : data);
1863 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1864 SPEC_STAT (func->etype);
1870 /*-----------------------------------------------------------------*/
1871 /* isSymbolEqual - compares two symbols return 1 if they match */
1872 /*-----------------------------------------------------------------*/
1874 isSymbolEqual (symbol * dest, symbol * src)
1876 /* if pointers match then equal */
1880 /* if one of them is null then don't match */
1884 /* if both of them have rname match on rname */
1885 if (dest->rname[0] && src->rname[0])
1886 return (!strcmp (dest->rname, src->rname));
1888 /* otherwise match on name */
1889 return (!strcmp (dest->name, src->name));
1892 void PT(sym_link *type)
1894 printTypeChain(type,0);
1896 /*-----------------------------------------------------------------*/
1897 /* printTypeChain - prints the type chain in human readable form */
1898 /*-----------------------------------------------------------------*/
1900 printTypeChain (sym_link * type, FILE * of)
1914 if (DCL_PTR_VOLATILE(type)) {
1915 fprintf (of, "volatile ");
1917 switch (DCL_TYPE (type))
1920 fprintf (of, "function ");
1923 fprintf (of, "_generic * ");
1924 if (DCL_PTR_CONST (type))
1925 fprintf (of, "const ");
1928 fprintf (of, "_code * ");
1929 if (DCL_PTR_CONST (type))
1930 fprintf (of, "const ");
1933 fprintf (of, "_far * ");
1934 if (DCL_PTR_CONST (type))
1935 fprintf (of, "const ");
1938 fprintf (of, "_eeprom * ");
1939 if (DCL_PTR_CONST (type))
1940 fprintf (of, "const ");
1944 fprintf (of, "_near * ");
1945 if (DCL_PTR_CONST (type))
1946 fprintf (of, "const ");
1949 fprintf (of, "_idata *");
1950 if (DCL_PTR_CONST (type))
1951 fprintf (of, "const ");
1954 fprintf (of, "_pdata *");
1955 if (DCL_PTR_CONST (type))
1956 fprintf (of, "const ");
1959 fprintf (of, " _unkown *");
1960 if (DCL_PTR_CONST (type))
1961 fprintf (of, "const ");
1964 fprintf (of, "array of ");
1970 if (SPEC_VOLATILE (type))
1971 fprintf (of, "volatile ");
1972 if (SPEC_USIGN (type))
1973 fprintf (of, "unsigned ");
1974 if (SPEC_CONST (type))
1975 fprintf (of, "const ");
1977 switch (SPEC_NOUN (type))
1981 fprintf (of, "long ");
1982 fprintf (of, "int ");
1986 fprintf (of, "char ");
1990 fprintf (of, "void ");
1994 fprintf (of, "float ");
1998 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2002 fprintf (of, "sbit ");
2006 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2010 fprintf (of, "double ");
2014 fprintf (of, "unknown type ");
2024 /*-----------------------------------------------------------------*/
2025 /* cdbTypeInfo - print the type information for debugger */
2026 /*-----------------------------------------------------------------*/
2028 cdbTypeInfo (sym_link * type, FILE * of)
2030 fprintf (of, "{%d}", getSize (type));
2035 switch (DCL_TYPE (type))
2038 fprintf (of, "DF,");
2041 fprintf (of, "DG,");
2044 fprintf (of, "DC,");
2047 fprintf (of, "DX,");
2050 fprintf (of, "DD,");
2053 fprintf (of, "DI,");
2056 fprintf (of, "DP,");
2059 fprintf (of, "DA,");
2062 fprintf (of, "DA%d,", DCL_ELEM (type));
2070 switch (SPEC_NOUN (type))
2092 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2100 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2107 if (SPEC_USIGN (type))
2115 /*-----------------------------------------------------------------*/
2116 /* cdbSymbol - prints a symbol & its type information for debugger */
2117 /*-----------------------------------------------------------------*/
2119 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2131 fprintf (of, "S:"); /* symbol record */
2132 /* if this is not a structure symbol then
2133 we need to figure out the scope information */
2139 if (IS_STATIC (sym->etype))
2140 fprintf (of, "F%s$", moduleName); /* scope is file */
2142 fprintf (of, "G$"); /* scope is global */
2145 /* symbol is local */
2146 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2149 fprintf (of, "S$"); /* scope is structure */
2151 /* print the name, & mangled name */
2152 fprintf (of, "%s$%d$%d(", sym->name,
2153 sym->level, sym->block);
2155 cdbTypeInfo (sym->type, of);
2158 /* print the address space */
2159 map = SPEC_OCLS (sym->etype);
2160 fprintf (of, "%c,%d,%d",
2161 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2163 /* if assigned to registers then output register names */
2164 /* if this is a function then print
2165 if is it an interrupt routine & interrupt number
2166 and the register bank it is using */
2168 fprintf (of, ",%d,%d,%d", SPEC_INTRTN (sym->etype),
2169 SPEC_INTN (sym->etype), SPEC_BANK (sym->etype));
2170 /* alternate location to find this symbol @ : eg registers
2177 /*-----------------------------------------------------------------*/
2178 /* cdbStruct - print a structure for debugger */
2179 /*-----------------------------------------------------------------*/
2181 cdbStruct (structdef * sdef, int block, FILE * of,
2182 int inStruct, char *tag)
2187 /* if block # then must have function scope */
2188 fprintf (of, "F%s$", moduleName);
2189 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2190 for (sym = sdef->fields; sym; sym = sym->next)
2192 fprintf (of, "({%d}", sym->offset);
2193 cdbSymbol (sym, of, TRUE, FALSE);
2201 /*------------------------------------------------------------------*/
2202 /* cdbStructBlock - calls struct printing for a blcks */
2203 /*------------------------------------------------------------------*/
2205 cdbStructBlock (int block, FILE * of)
2208 bucket **table = StructTab;
2212 /* go thru the entire table */
2213 for (i = 0; i < 256; i++)
2215 for (chain = table[i]; chain; chain = chain->next)
2217 if (chain->block >= block)
2219 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2225 /*-----------------------------------------------------------------*/
2226 /* powof2 - returns power of two for the number if number is pow 2 */
2227 /*-----------------------------------------------------------------*/
2229 powof2 (unsigned long num)
2242 if (n1s > 1 || nshifts == 0)
2258 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2259 symbol *__muldiv[3][3][2];
2260 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2261 sym_link *__multypes[3][2];
2262 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2263 symbol *__conv[2][3][2];
2265 sym_link *floatType;
2268 _makeRegParam (symbol * sym)
2272 val = sym->args; /* loop thru all the arguments */
2274 /* reset regparm for the port */
2275 (*port->reset_regparms) ();
2278 SPEC_REGPARM (val->etype) = 1;
2284 _mangleFunctionName(char *in)
2286 if (port->getMangledFunctionName)
2288 return port->getMangledFunctionName(in);
2296 /*-----------------------------------------------------------------*/
2297 /* initCSupport - create functions for C support routines */
2298 /*-----------------------------------------------------------------*/
2302 const char *smuldivmod[] =
2306 const char *sbwd[] =
2308 "char", "int", "long"
2315 int bwd, su, muldivmod, tofrom;
2317 floatType = newFloatLink ();
2319 for (bwd = 0; bwd < 3; bwd++)
2336 __multypes[bwd][0] = l;
2337 __multypes[bwd][1] = copyLinkChain (l);
2338 SPEC_USIGN (__multypes[bwd][1]) = 1;
2341 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2342 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2343 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2344 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2345 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2346 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2347 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2348 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2349 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2350 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2352 for (tofrom = 0; tofrom < 2; tofrom++)
2354 for (bwd = 0; bwd < 3; bwd++)
2356 for (su = 0; su < 2; su++)
2360 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2361 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2365 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2366 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2372 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2374 for (bwd = 0; bwd < 3; bwd++)
2376 for (su = 0; su < 2; su++)
2378 sprintf (buffer, "_%s%s%s",
2379 smuldivmod[muldivmod],
2382 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2383 SPEC_NONBANKED (__muldiv[muldivmod][bwd][su]->etype) = 1;
2384 if (bwd < port->muldiv.force_reg_param_below)
2385 _makeRegParam (__muldiv[muldivmod][bwd][su]);