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_alloc ( 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 /* prevent overflow of the (r)name buffers */
116 if (strlen(sname)>SDCC_SYMNAME_MAX) {
117 werror (W_SYMBOL_NAME_TOO_LONG, SDCC_SYMNAME_MAX);
118 sname[SDCC_SYMNAME_MAX]='\0';
121 /* the symbols are always added at the head of the list */
123 /* get a free entry */
124 bp = Safe_alloc ( sizeof (bucket));
126 bp->sym = sym; /* update the symbol pointer */
127 bp->level = level; /* update the nest level */
129 strcpy (bp->name, sname); /* copy the name into place */
131 /* if this is the first entry */
134 bp->prev = bp->next = (void *) NULL; /* point to nothing */
137 /* not first entry then add @ head of list */
147 /*-----------------------------------------------------------------*/
148 /* deleteSym - deletes a symbol from the hash Table entry */
149 /*-----------------------------------------------------------------*/
151 deleteSym (bucket ** stab, void *sym, char *sname)
159 /* find the symbol */
162 if (bp->sym == sym) /* found it then break out */
163 break; /* of the loop */
167 if (!bp) /* did not find it */
169 /* if this is the first one in the chain */
173 if (stab[i]) /* if chain ! empty */
174 stab[i]->prev = (void *) NULL;
176 /* middle || end of chain */
179 if (bp->next) /* if not end of chain */
180 bp->next->prev = bp->prev;
182 bp->prev->next = bp->next;
187 /*-----------------------------------------------------------------*/
188 /* findSym - finds a symbol in a table */
189 /*-----------------------------------------------------------------*/
191 findSym (bucket ** stab, void *sym, const char *sname)
195 bp = stab[hashKey (sname)];
198 if (bp->sym == sym || strcmp (bp->name, sname) == 0)
203 return (bp ? bp->sym : (void *) NULL);
206 /*-----------------------------------------------------------------*/
207 /* findSymWithLevel - finds a symbol with a name & level */
208 /*-----------------------------------------------------------------*/
210 findSymWithLevel (bucket ** stab, symbol * sym)
214 bp = stab[hashKey (sym->name)];
217 ** do the search from the head of the list since the
218 ** elements are added at the head it is ensured that
219 ** we will find the deeper definitions before we find
220 ** the global ones. we need to check for symbols with
221 ** level <= to the level given, if levels match then block
222 ** numbers need to match as well
226 if (strcmp (bp->name, sym->name) == 0 && bp->level <= sym->level)
228 /* if this is parameter then nothing else need to be checked */
229 if (((symbol *) (bp->sym))->_isparm)
231 /* if levels match then block numbers should also match */
232 if (bp->level && bp->level == sym->level && bp->block == sym->block)
234 /* if levels don't match then we are okay */
235 if (bp->level && bp->level != sym->level && bp->block <= sym->block)
237 /* if this is a global variable then we are ok too */
245 return (void *) NULL;
248 /*-----------------------------------------------------------------*/
249 /* findSymWithBlock - finds a symbol with name in with a block */
250 /*-----------------------------------------------------------------*/
252 findSymWithBlock (bucket ** stab, symbol * sym, int block)
256 bp = stab[hashKey (sym->name)];
259 if (strcmp (bp->name, sym->name) == 0 &&
265 return (bp ? bp->sym : (void *) NULL);
268 /*------------------------------------------------------------------*/
269 /* newSymbol () - returns a new pointer to a symbol */
270 /*------------------------------------------------------------------*/
272 newSymbol (char *name, int scope)
276 sym = Safe_alloc ( sizeof (symbol));
278 strcpy (sym->name, name); /* copy the name */
279 sym->level = scope; /* set the level */
280 sym->block = currBlockno;
281 sym->lineDef = yylineno; /* set the line number */
285 /*------------------------------------------------------------------*/
286 /* newLink - creates a new link (declarator,specifier) */
287 /*------------------------------------------------------------------*/
293 p = Safe_alloc ( sizeof (sym_link));
298 /*------------------------------------------------------------------*/
299 /* newStruct - creats a new structdef from the free list */
300 /*------------------------------------------------------------------*/
302 newStruct (char *tag)
306 s = Safe_alloc ( sizeof (structdef));
308 strcpy (s->tag, tag); /* copy the tag */
312 /*------------------------------------------------------------------*/
313 /* pointerTypes - do the computation for the pointer types */
314 /*------------------------------------------------------------------*/
316 pointerTypes (sym_link * ptr, sym_link * type)
321 /* find the first pointer type */
322 while (ptr && !IS_PTR (ptr))
325 /* could not find it */
326 if (!ptr || IS_SPEC (ptr))
329 if (IS_PTR(ptr) && DCL_TYPE(ptr)!=UPOINTER) {
330 pointerTypes (ptr->next, type);
334 /* change the pointer type depending on the
335 storage class of the type */
338 DCL_PTR_CONST (ptr) = SPEC_CONST (type);
339 DCL_PTR_VOLATILE (ptr) = SPEC_VOLATILE (type);
340 switch (SPEC_SCLS (type))
343 DCL_TYPE (ptr) = FPOINTER;
346 DCL_TYPE (ptr) = IPOINTER;
349 DCL_TYPE (ptr) = PPOINTER;
352 DCL_TYPE (ptr) = POINTER;
355 DCL_PTR_CONST (ptr) = port->mem.code_ro;
356 DCL_TYPE (ptr) = CPOINTER;
359 DCL_TYPE (ptr) = EEPPOINTER;
362 DCL_TYPE (ptr) = GPOINTER;
365 /* the storage class of type ends here */
368 SPEC_VOLATILE (type) = 0;
371 /* now change all the remaining unknown pointers
372 to generic pointers */
375 if (!IS_SPEC (ptr) && DCL_TYPE (ptr) == UPOINTER)
376 DCL_TYPE (ptr) = GPOINTER;
380 /* same for the type although it is highly unlikely that
381 type will have a pointer */
384 if (!IS_SPEC (type) && DCL_TYPE (type) == UPOINTER)
385 DCL_TYPE (type) = GPOINTER;
391 /*------------------------------------------------------------------*/
392 /* addDecl - adds a declarator @ the end of a chain */
393 /*------------------------------------------------------------------*/
395 addDecl (symbol * sym, int type, sym_link * p)
401 /* if we are passed a link then set head & tail */
410 head = tail = newLink ();
411 DCL_TYPE (head) = type;
414 /* if this is the first entry */
422 if (IS_SPEC (sym->etype) && IS_SPEC (head) && head == tail)
424 sym->etype = mergeSpec (sym->etype, head, sym->name);
428 if (IS_SPEC (sym->etype) && !IS_SPEC (head) && head == tail)
431 while (t->next != sym->etype)
434 tail->next = sym->etype;
438 sym->etype->next = head;
444 /* if the type is an unknown pointer and has
445 a tspec then take the storage class const & volatile
446 attribute from the tspec & make it those of this
450 //DCL_TYPE (p) == UPOINTER &&
453 if (!IS_SPEC (sym->etype))
455 sym->etype = sym->etype->next = newLink ();
456 sym->etype->class = SPECIFIER;
458 SPEC_SCLS (sym->etype) = SPEC_SCLS (DCL_TSPEC (p));
459 SPEC_CONST (sym->etype) = SPEC_CONST (DCL_TSPEC (p));
460 SPEC_VOLATILE (sym->etype) = SPEC_VOLATILE (DCL_TSPEC (p));
461 DCL_TSPEC (p) = NULL;
466 /*------------------------------------------------------------------
467 checkTypeSanity: prevent the user from doing e.g.:
469 ------------------------------------------------------------------*/
470 void checkTypeSanity(sym_link *etype, char *name) {
474 if (getenv("DEBUG_SANITY")) {
475 fprintf (stderr, "sanity check skipped for %s (etype==0)\n", name);
480 if (!IS_SPEC(etype)) {
481 if (getenv("DEBUG_SANITY")) {
482 fprintf (stderr, "sanity check skipped for %s (!IS_SPEC)\n", name);
487 noun=nounName(etype);
489 if (getenv("DEBUG_SANITY")) {
490 fprintf (stderr, "checking sanity for %s %x\n", name, (int)etype);
493 if ((SPEC_NOUN(etype)==V_CHAR ||
494 SPEC_NOUN(etype)==V_FLOAT ||
495 SPEC_NOUN(etype)==V_DOUBLE ||
496 SPEC_NOUN(etype)==V_VOID) &&
497 (etype->select.s._short || SPEC_LONG(etype))) {
498 // long or short for char float double or void
499 werror (E_LONG_OR_SHORT_INVALID, noun, name);
501 if ((SPEC_NOUN(etype)==V_FLOAT ||
502 SPEC_NOUN(etype)==V_DOUBLE ||
503 SPEC_NOUN(etype)==V_VOID) &&
504 (etype->select.s._signed || SPEC_USIGN(etype))) {
505 // signed or unsigned for float double or void
506 werror (E_SIGNED_OR_UNSIGNED_INVALID, noun, name);
509 // special case for "short"
510 if (etype->select.s._short) {
511 SPEC_NOUN(etype) = options.shortis8bits ? V_CHAR : V_INT;
512 etype->select.s._short = 0;
516 "const a;" or "data b;" or "signed s" or "long l"
518 if (!SPEC_NOUN(etype)) {
519 SPEC_NOUN(etype)=V_INT;
522 if (etype->select.s._signed && SPEC_USIGN(etype)) {
523 // signed AND unsigned
524 werror (E_SIGNED_AND_UNSIGNED_INVALID, noun, name);
526 if (etype->select.s._short && SPEC_LONG(etype)) {
528 werror (E_LONG_AND_SHORT_INVALID, noun, name);
533 /*------------------------------------------------------------------*/
534 /* mergeSpec - merges two specifiers and returns the new one */
535 /*------------------------------------------------------------------*/
537 mergeSpec (sym_link * dest, sym_link * src, char *name)
540 sym_link *symlink=dest;
543 if (!IS_SPEC(dest)) {
544 // This can happen for pointers, find the end type
545 while (dest && !IS_SPEC(dest))
549 // here we have a declarator as source, reverse them
553 while (dest && !IS_SPEC(dest)) {
554 // and find the specifier
562 if (!IS_SPEC(dest) || !IS_SPEC(src)) {
563 werror (E_INTERNAL_ERROR, __FILE__, __LINE__, "cannot merge declarator");
567 if (getenv("DEBUG_mergeSpec")) {
568 fprintf (stderr, "mergeSpec: \"%s\"\n", name);
571 if (SPEC_NOUN(src)) {
572 if (!SPEC_NOUN(dest)) {
573 SPEC_NOUN(dest)=SPEC_NOUN(src);
575 /* we shouldn't redeclare the type */
576 if (getenv("DEBUG_SANITY")) {
577 fprintf (stderr, "mergeSpec: ");
579 werror(E_TWO_OR_MORE_DATA_TYPES, name);
583 if (SPEC_SCLS(src)) {
584 /* if destination has no storage class */
585 if (!SPEC_SCLS (dest) || SPEC_SCLS(dest)==S_REGISTER) {
586 SPEC_SCLS (dest) = SPEC_SCLS (src);
588 if (getenv("DEBUG_SANITY")) {
589 fprintf (stderr, "mergeSpec: ");
591 werror(E_TWO_OR_MORE_STORAGE_CLASSES, name);
595 /* copy all the specifications */
597 // we really should do:
599 if (SPEC_what(src)) {
600 if (SPEC_what(dest)) {
601 werror(W_DUPLICATE_SPEC, "what");
603 SPEC_what(dst)|=SPEC_what(src);
606 // but there are more important thing right now
608 SPEC_LONG (dest) |= SPEC_LONG (src);
609 dest->select.s._short|=src->select.s._short;
610 SPEC_USIGN (dest) |= SPEC_USIGN (src);
611 dest->select.s._signed|=src->select.s._signed;
612 SPEC_STAT (dest) |= SPEC_STAT (src);
613 SPEC_EXTR (dest) |= SPEC_EXTR (src);
614 SPEC_ABSA (dest) |= SPEC_ABSA (src);
615 SPEC_RENT (dest) |= SPEC_RENT (src);
616 SPEC_INTN (dest) |= SPEC_INTN (src);
617 SPEC_BANK (dest) |= SPEC_BANK (src);
618 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
619 SPEC_CRTCL (dest) |= SPEC_CRTCL (src);
620 SPEC_ADDR (dest) |= SPEC_ADDR (src);
621 SPEC_OCLS (dest) = SPEC_OCLS (src);
622 SPEC_BLEN (dest) |= SPEC_BLEN (src);
623 SPEC_BSTR (dest) |= SPEC_BSTR (src);
624 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
625 SPEC_NONBANKED (dest) |= SPEC_NONBANKED (src);
626 SPEC_NAKED (dest) |= SPEC_NAKED (src);
628 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
629 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
634 /*------------------------------------------------------------------*/
635 /* cloneSpec - copies the entire spec and returns a new spec */
636 /*------------------------------------------------------------------*/
638 cloneSpec (sym_link * src)
642 /* go thru chain till we find the specifier */
643 while (src && src->class != SPECIFIER)
647 memcpy (spec, src, sizeof (sym_link));
651 /*------------------------------------------------------------------*/
652 /* genSymName - generates and returns a name used for anonymous vars */
653 /*------------------------------------------------------------------*/
655 genSymName (int level)
657 static int gCount = 0;
658 static char gname[SDCC_NAME_MAX + 1];
660 sprintf (gname, "__%04d%04d", level, gCount++);
664 /*------------------------------------------------------------------*/
665 /* getSpec - returns the specifier part from a declaration chain */
666 /*------------------------------------------------------------------*/
668 getSpec (sym_link * p)
673 while (p && !(IS_SPEC (p)))
679 /*------------------------------------------------------------------*/
680 /* newCharLink() - creates an char type */
681 /*------------------------------------------------------------------*/
688 p->class = SPECIFIER;
689 SPEC_NOUN (p) = V_CHAR;
694 /*------------------------------------------------------------------*/
695 /* newFloatLink - a new Float type */
696 /*------------------------------------------------------------------*/
703 p->class = SPECIFIER;
704 SPEC_NOUN (p) = V_FLOAT;
709 /*------------------------------------------------------------------*/
710 /* newLongLink() - new long type */
711 /*------------------------------------------------------------------*/
718 p->class = SPECIFIER;
719 SPEC_NOUN (p) = V_INT;
725 /*------------------------------------------------------------------*/
726 /* newIntLink() - creates an int type */
727 /*------------------------------------------------------------------*/
734 p->class = SPECIFIER;
735 SPEC_NOUN (p) = V_INT;
740 /*------------------------------------------------------------------*/
741 /* getSize - returns size of a type chain in bits */
742 /*------------------------------------------------------------------*/
744 getSize (sym_link * p)
746 /* if nothing return 0 */
750 { /* if this is the specifier then */
751 switch (SPEC_NOUN (p))
752 { /* depending on the specifier type */
754 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
762 return SPEC_STRUCT (p)->size;
768 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
774 /* this is a specifier */
775 switch (DCL_TYPE (p))
780 return DCL_ELEM (p) * getSize (p->next);
797 /*------------------------------------------------------------------*/
798 /* bitsForType - returns # of bits required to store this type */
799 /*------------------------------------------------------------------*/
801 bitsForType (sym_link * p)
803 /* if nothing return 0 */
808 { /* if this is the specifier then */
810 switch (SPEC_NOUN (p))
811 { /* depending on the specifier type */
813 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
815 return FLOATSIZE * 8;
821 return SPEC_STRUCT (p)->size * 8;
827 return SPEC_BLEN (p);
833 /* this is a specifier */
834 switch (DCL_TYPE (p))
839 return DCL_ELEM (p) * getSize (p->next) * 8;
843 return (PTRSIZE * 8);
847 return (FPTRSIZE * 8);
849 return (GPTRSIZE * 8);
856 /*------------------------------------------------------------------*/
857 /* copySymbolChain - copies a symbol chain */
858 /*------------------------------------------------------------------*/
860 copySymbolChain (symbol * src)
867 dest = copySymbol (src);
868 dest->next = copySymbolChain (src->next);
872 /*------------------------------------------------------------------*/
873 /* copySymbol - makes a copy of a symbol */
874 /*------------------------------------------------------------------*/
876 copySymbol (symbol * src)
883 dest = newSymbol (src->name, src->level);
884 memcpy (dest, src, sizeof (symbol));
885 dest->level = src->level;
886 dest->block = src->block;
887 dest->ival = copyIlist (src->ival);
888 dest->type = copyLinkChain (src->type);
889 dest->etype = getSpec (dest->type);
891 dest->args = copyValueChain (src->args);
892 dest->key = src->key;
893 dest->calleeSave = src->calleeSave;
894 dest->allocreq = src->allocreq;
898 /*------------------------------------------------------------------*/
899 /* reverseSyms - reverses the links for a symbol chain */
900 /*------------------------------------------------------------------*/
902 reverseSyms (symbol * sym)
904 symbol *prev, *curr, *next;
919 sym->next = (void *) NULL;
923 /*------------------------------------------------------------------*/
924 /* reverseLink - reverses the links for a type chain */
925 /*------------------------------------------------------------------*/
927 reverseLink (sym_link * type)
929 sym_link *prev, *curr, *next;
944 type->next = (void *) NULL;
948 /*------------------------------------------------------------------*/
949 /* addSymChain - adds a symbol chain to the symboltable */
950 /*------------------------------------------------------------------*/
952 addSymChain (symbol * symHead)
954 symbol *sym = symHead;
957 for (; sym != NULL; sym = sym->next)
960 checkTypeSanity(sym->etype, sym->name);
962 /* if already exists in the symbol table then check if
963 one of them is an extern definition if yes then
964 then check if the type match, if the types match then
965 delete the current entry and add the new entry */
966 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
967 csym->level == sym->level) {
969 /* one definition extern ? */
970 if (IS_EXTERN (csym->etype) || IS_EXTERN (sym->etype)) {
971 /* do types match ? */
972 if (compareType (csym->type, sym->type) != 1) {
974 werror (E_EXTERN_MISMATCH, csym->name);
977 /* delete current entry */
978 deleteSym (SymbolTab, csym, csym->name);
981 werror (E_DUPLICATE, sym->name);
987 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
992 /*------------------------------------------------------------------*/
993 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
994 /*------------------------------------------------------------------*/
996 funcInChain (sym_link * lnk)
1007 /*------------------------------------------------------------------*/
1008 /* structElemType - returns the type info of a sturct member */
1009 /*------------------------------------------------------------------*/
1011 structElemType (sym_link * stype, value * id, value ** argsp)
1013 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
1014 sym_link *type, *etype;
1015 sym_link *petype = getSpec (stype);
1020 /* look for the id */
1023 if (strcmp (fields->rname, id->name) == 0)
1027 *argsp = fields->args;
1029 type = copyLinkChain (fields->type);
1030 etype = getSpec (type);
1031 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1032 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1035 fields = fields->next;
1037 werror (E_NOT_MEMBER, id->name);
1042 /*------------------------------------------------------------------*/
1043 /* getStructElement - returns element of a tructure definition */
1044 /*------------------------------------------------------------------*/
1046 getStructElement (structdef * sdef, symbol * sym)
1050 for (field = sdef->fields; field; field = field->next)
1051 if (strcmp (field->name, sym->name) == 0)
1054 werror (E_NOT_MEMBER, sym->name);
1056 return sdef->fields;
1059 /*------------------------------------------------------------------*/
1060 /* compStructSize - computes the size of a structure */
1061 /*------------------------------------------------------------------*/
1063 compStructSize (int su, structdef * sdef)
1065 int sum = 0, usum = 0;
1069 /* for the identifiers */
1070 loop = sdef->fields;
1073 /* create the internal name for this variable */
1074 sprintf (loop->rname, "_%s", loop->name);
1075 loop->offset = (su == UNION ? sum = 0 : sum);
1076 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1078 /* if this is a bit field */
1081 /* change it to a unsigned bit */
1082 SPEC_NOUN (loop->etype) = V_BIT;
1083 SPEC_USIGN (loop->etype) = 1;
1084 /* check if this fit into the remaining */
1085 /* bits of this byte else align it to the */
1086 /* next byte boundary */
1087 if ((SPEC_BLEN (loop->etype) = loop->bitVar) <= (8 - bitOffset)) {
1088 SPEC_BSTR (loop->etype) = bitOffset;
1089 if ((bitOffset += (loop->bitVar % 8)) == 8)
1092 else /* does not fit */ {
1094 SPEC_BSTR (loop->etype) = bitOffset;
1095 sum += (loop->bitVar / 8);
1096 bitOffset += (loop->bitVar % 8);
1098 /* if this is the last field then pad */
1099 if (!loop->next && bitOffset && bitOffset != 8) {
1105 checkDecl (loop, 1);
1106 sum += getSize (loop->type);
1109 /* if function then do the arguments for it */
1110 if (funcInChain (loop->type)) {
1111 processFuncArgs (loop, 1);
1116 /* if this is not a bitfield but the */
1117 /* previous one was and did not take */
1118 /* the whole byte then pad the rest */
1119 if ((loop && !loop->bitVar) && bitOffset) {
1124 /* if union then size = sizeof larget field */
1126 usum = max (usum, sum);
1130 return (su == UNION ? usum : sum);
1133 /*------------------------------------------------------------------*/
1134 /* checkSClass - check the storage class specification */
1135 /*------------------------------------------------------------------*/
1137 checkSClass (symbol * sym, int isProto)
1139 if (getenv("DEBUG_SANITY")) {
1140 fprintf (stderr, "checkSClass: %s \n", sym->name);
1142 if (strcmp(sym->name, "_testsGlobal")==0) {
1146 /* type is literal can happen foe enums change
1148 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1149 SPEC_SCLS (sym->etype) = S_AUTO;
1151 /* if sfr or sbit then must also be */
1152 /* volatile the initial value will be xlated */
1153 /* to an absolute address */
1154 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1155 SPEC_SCLS (sym->etype) == S_SFR)
1157 SPEC_VOLATILE (sym->etype) = 1;
1158 /* if initial value given */
1161 SPEC_ABSA (sym->etype) = 1;
1162 SPEC_ADDR (sym->etype) =
1163 (int) list2int (sym->ival);
1168 /* if absolute address given then it mark it as
1170 if (IS_ABSOLUTE (sym->etype))
1171 SPEC_VOLATILE (sym->etype) = 1;
1173 /* global variables declared const put into code */
1174 if (sym->level == 0 &&
1175 SPEC_CONST (sym->etype)) {
1176 SPEC_SCLS (sym->etype) = S_CODE;
1179 /* global variable in code space is a constant */
1180 if (sym->level == 0 &&
1181 SPEC_SCLS (sym->etype) == S_CODE &&
1183 SPEC_CONST (sym->etype) = 1;
1186 /* if bit variable then no storage class can be */
1187 /* specified since bit is already a storage */
1188 if (IS_BITVAR (sym->etype) &&
1189 (SPEC_SCLS (sym->etype) != S_FIXED &&
1190 SPEC_SCLS (sym->etype) != S_SBIT &&
1191 SPEC_SCLS (sym->etype) != S_BIT)
1194 werror (E_BITVAR_STORAGE, sym->name);
1195 SPEC_SCLS (sym->etype) = S_FIXED;
1198 /* extern variables cannot be initialized */
1199 if (IS_EXTERN (sym->etype) && sym->ival)
1201 werror (E_EXTERN_INIT, sym->name);
1205 /* if this is an atomatic symbol */
1206 if (sym->level && (options.stackAuto || reentrant)) {
1207 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1208 SPEC_SCLS (sym->etype) == S_FIXED ||
1209 SPEC_SCLS (sym->etype) == S_REGISTER ||
1210 SPEC_SCLS (sym->etype) == S_STACK ||
1211 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1212 SPEC_SCLS (sym->etype) = S_AUTO;
1214 /* storage class may only be specified for statics */
1215 if (!IS_STATIC(sym->etype)) {
1216 werror (E_AUTO_ASSUMED, sym->name);
1221 /* automatic symbols cannot be given */
1222 /* an absolute address ignore it */
1224 SPEC_ABSA (sym->etype) &&
1225 (options.stackAuto || reentrant))
1227 werror (E_AUTO_ABSA, sym->name);
1228 SPEC_ABSA (sym->etype) = 0;
1231 /* arrays & pointers cannot be defined for bits */
1232 /* SBITS or SFRs or BIT */
1233 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1234 (SPEC_NOUN (sym->etype) == V_BIT ||
1235 SPEC_NOUN (sym->etype) == V_SBIT ||
1236 SPEC_SCLS (sym->etype) == S_SFR))
1237 werror (E_BIT_ARRAY, sym->name);
1239 /* if this is a bit|sbit then set length & start */
1240 if (SPEC_NOUN (sym->etype) == V_BIT ||
1241 SPEC_NOUN (sym->etype) == V_SBIT)
1243 SPEC_BLEN (sym->etype) = 1;
1244 SPEC_BSTR (sym->etype) = 0;
1248 /* variables declared in CODE space must have */
1249 /* initializers if not an extern */
1250 if (SPEC_SCLS (sym->etype) == S_CODE &&
1251 sym->ival == NULL &&
1253 port->mem.code_ro &&
1254 !IS_EXTERN (sym->etype) &&
1255 !funcInChain (sym->type))
1256 werror (E_CODE_NO_INIT, sym->name);
1259 /* if parameter or local variable then change */
1260 /* the storage class to reflect where the var will go */
1261 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1262 !IS_STATIC(sym->etype))
1264 if (options.stackAuto || (currFunc && IS_RENT (currFunc->etype)))
1266 SPEC_SCLS (sym->etype) = (options.useXstack ?
1267 S_XSTACK : S_STACK);
1271 /* hack-o-matic! I see no reason why the useXstack option should ever
1272 * control this allcoation, but the code was originally that way, and
1273 * changing it for non-390 ports breaks the compiler badly.
1275 bool useXdata = TARGET_IS_DS390 ? 1 : options.useXstack;
1276 SPEC_SCLS (sym->etype) = (useXdata ?
1282 /*------------------------------------------------------------------*/
1283 /* changePointer - change pointer to functions */
1284 /*------------------------------------------------------------------*/
1286 changePointer (symbol * sym)
1290 /* go thru the chain of declarations */
1291 /* if we find a pointer to a function */
1292 /* unconditionally change it to a ptr */
1294 for (p = sym->type; p; p = p->next)
1296 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1297 DCL_TYPE (p) = GPOINTER;
1298 if (IS_PTR (p) && IS_FUNC (p->next))
1299 DCL_TYPE (p) = CPOINTER;
1303 /*------------------------------------------------------------------*/
1304 /* checkDecl - does semantic validation of a declaration */
1305 /*------------------------------------------------------------------*/
1307 checkDecl (symbol * sym, int isProto)
1310 checkSClass (sym, isProto); /* check the storage class */
1311 changePointer (sym); /* change pointers if required */
1313 /* if this is an array without any dimension
1314 then update the dimension from the initial value */
1315 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1316 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1321 /*------------------------------------------------------------------*/
1322 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1323 /*------------------------------------------------------------------*/
1325 copyLinkChain (sym_link * p)
1327 sym_link *head, *curr, *loop;
1330 head = loop = (curr ? newLink () : (void *) NULL);
1333 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1334 loop->next = (curr->next ? newLink () : (void *) NULL);
1343 /*------------------------------------------------------------------*/
1344 /* cleanUpBlock - cleansup the symbol table specified for all the */
1345 /* symbols in the given block */
1346 /*------------------------------------------------------------------*/
1348 cleanUpBlock (bucket ** table, int block)
1353 /* go thru the entire table */
1354 for (i = 0; i < 256; i++)
1356 for (chain = table[i]; chain; chain = chain->next)
1358 if (chain->block >= block)
1360 deleteSym (table, chain->sym, chain->name);
1366 /*------------------------------------------------------------------*/
1367 /* cleanUpLevel - cleansup the symbol table specified for all the */
1368 /* symbols in the given level */
1369 /*------------------------------------------------------------------*/
1371 cleanUpLevel (bucket ** table, int level)
1376 /* go thru the entire table */
1377 for (i = 0; i < 256; i++)
1379 for (chain = table[i]; chain; chain = chain->next)
1381 if (chain->level >= level)
1383 deleteSym (table, chain->sym, chain->name);
1389 /*------------------------------------------------------------------*/
1390 /* computeType - computes the resultant type from two types */
1391 /*------------------------------------------------------------------*/
1393 computeType (sym_link * type1, sym_link * type2)
1397 sym_link *etype1 = getSpec (type1);
1398 sym_link *etype2 = getSpec (type2);
1400 /* if one of them is a float then result is a float */
1401 /* here we assume that the types passed are okay */
1402 /* and can be cast to one another */
1403 /* which ever is greater in size */
1404 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1405 rType = newFloatLink ();
1407 /* if only one of them is a bit variable
1408 then the other one prevails */
1409 if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1410 rType = copyLinkChain (type2);
1411 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1412 rType = copyLinkChain (type1);
1414 /* if one of them is a pointer then that
1417 rType = copyLinkChain (type1);
1418 else if (IS_PTR (type2))
1419 rType = copyLinkChain (type2);
1420 else if (getSize (type1) > getSize (type2))
1421 rType = copyLinkChain (type1);
1423 rType = copyLinkChain (type2);
1425 reType = getSpec (rType);
1427 /* if either of them unsigned but not val then make this unsigned */
1428 if (((!IS_LITERAL(type1) && SPEC_USIGN (etype1)) ||
1429 (!IS_LITERAL(type2) && SPEC_USIGN (etype2))) &&
1431 SPEC_USIGN (reType) = 1;
1433 SPEC_USIGN (reType) = 0;
1435 /* if result is a literal then make not so */
1436 if (IS_LITERAL (reType))
1437 SPEC_SCLS (reType) = S_REGISTER;
1442 /*--------------------------------------------------------------------*/
1443 /* compareType - will do type check return 1 if match, -1 if castable */
1444 /*--------------------------------------------------------------------*/
1446 compareType (sym_link * dest, sym_link * src)
1457 /* if dest is a declarator then */
1462 if (DCL_TYPE (src) == DCL_TYPE (dest))
1463 return compareType (dest->next, src->next);
1464 if (IS_PTR (src) && IS_PTR (dest))
1466 if (IS_PTR (dest) && IS_ARRAY (src))
1468 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1469 return -1 * compareType (dest->next, src);
1472 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1478 /* if one is a specifier and the other is not */
1479 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1480 (IS_SPEC (dest) && !IS_SPEC (src)))
1483 /* if one of them is a void then ok */
1484 if (SPEC_NOUN (dest) == V_VOID &&
1485 SPEC_NOUN (src) != V_VOID)
1488 if (SPEC_NOUN (dest) != V_VOID &&
1489 SPEC_NOUN (src) == V_VOID)
1492 /* if they are both bitfields then if the lengths
1493 and starts don't match */
1494 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1495 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1496 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1499 /* it is a specifier */
1500 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1502 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1503 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1504 getSize (dest) == getSize (src))
1506 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1511 else if (IS_STRUCT (dest))
1513 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1518 if (SPEC_LONG (dest) != SPEC_LONG (src))
1521 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1527 /*------------------------------------------------------------------*/
1528 /* inCalleeSaveList - return 1 if found in callee save list */
1529 /*------------------------------------------------------------------*/
1531 inCalleeSaveList (char *s)
1535 for (i = 0; options.calleeSaves[i]; i++)
1536 if (strcmp (options.calleeSaves[i], s) == 0)
1542 /*-----------------------------------------------------------------*/
1543 /* aggregateArgToPointer: change an agggregate type function */
1544 /* argument to a pointer to that type. */
1545 /*-----------------------------------------------------------------*/
1547 aggregateArgToPointer (value * val)
1549 int wasArray=IS_ARRAY(val->type);
1551 if (IS_AGGREGATE (val->type))
1553 /* if this is a structure */
1554 /* then we need to add a new link */
1555 if (IS_STRUCT (val->type))
1557 /* first lets add DECLARATOR type */
1558 sym_link *p = val->type;
1560 werror (W_STRUCT_AS_ARG, val->name);
1561 val->type = newLink ();
1562 val->type->next = p;
1565 /* change to a pointer depending on the */
1566 /* storage class specified */
1567 switch (SPEC_SCLS (val->etype))
1570 DCL_TYPE (val->type) = IPOINTER;
1573 DCL_TYPE (val->type) = PPOINTER;
1576 if (TARGET_IS_DS390)
1578 /* The AUTO and REGISTER classes should probably
1579 * also become generic pointers, but I haven't yet
1580 * devised a test case for that.
1582 DCL_TYPE (val->type) = GPOINTER;
1589 DCL_TYPE (val->type) = POINTER;
1592 DCL_TYPE (val->type) = CPOINTER;
1595 DCL_TYPE (val->type) = FPOINTER;
1598 DCL_TYPE (val->type) = EEPPOINTER;
1601 DCL_TYPE (val->type) = GPOINTER;
1605 /* there is NO way to specify the storage of the pointer
1606 associated with an array, so we make it the default */
1607 SPEC_SCLS(val->etype) = S_FIXED;
1610 /* is there is a symbol associated then */
1611 /* change the type of the symbol as well */
1614 val->sym->type = copyLinkChain (val->type);
1615 val->sym->etype = getSpec (val->sym->type);
1619 /*------------------------------------------------------------------*/
1620 /* checkFunction - does all kinds of check on a function */
1621 /*------------------------------------------------------------------*/
1623 checkFunction (symbol * sym)
1626 value *exargs, *acargs;
1630 if (getenv("DEBUG_SANITY")) {
1631 fprintf (stderr, "checkFunction: %s ", sym->name);
1634 /* make sure the type is complete and sane */
1635 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
1637 /* if not type then some kind of error */
1641 /* if the function has no type then make it return int */
1642 if (!sym->type->next)
1643 sym->type->next = sym->etype = newIntLink ();
1645 /* function cannot return aggregate */
1646 if (IS_AGGREGATE (sym->type->next))
1648 werror (E_FUNC_AGGR, sym->name);
1652 /* function cannot return bit */
1653 if (IS_BITVAR (sym->type->next))
1655 werror (E_FUNC_BIT, sym->name);
1659 /* check if this function is defined as calleeSaves
1660 then mark it as such */
1661 sym->calleeSave = inCalleeSaveList (sym->name);
1663 /* if interrupt service routine */
1664 /* then it cannot have arguments */
1665 if (sym->args && IS_ISR (sym->etype) && !IS_VOID (sym->args->type))
1667 werror (E_INT_ARGS, sym->name);
1671 if (!(csym = findSym (SymbolTab, sym, sym->name)))
1672 return 1; /* not defined nothing more to check */
1674 /* check if body already present */
1675 if (csym && csym->fbody)
1677 werror (E_FUNC_BODY, sym->name);
1681 /* check the return value type */
1682 if (compareType (csym->type, sym->type) <= 0)
1684 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
1685 werror (W_CONTINUE, "previous definition type ");
1686 printTypeChain (csym->type, stderr);
1687 fprintf (stderr, "\n");
1688 werror (W_CONTINUE, "current definition type ");
1689 printTypeChain (sym->type, stderr);
1690 fprintf (stderr, "\n");
1694 if (SPEC_INTRTN (csym->etype) != SPEC_INTRTN (sym->etype))
1696 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
1699 if (SPEC_BANK (csym->etype) != SPEC_BANK (sym->etype))
1701 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
1704 if (SPEC_NAKED (csym->etype) != SPEC_NAKED (sym->etype))
1706 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
1709 /* compare expected args with actual args */
1710 exargs = csym->args;
1713 /* for all the expected args do */
1716 exargs = exargs->next, acargs = acargs->next, argCnt++)
1718 if (getenv("DEBUG_SANITY")) {
1719 fprintf (stderr, "checkFunction: %s ", exargs->name);
1721 /* make sure the type is complete and sane */
1722 checkTypeSanity(exargs->etype, exargs->name);
1724 /* If the actual argument is an array, any prototype
1725 * will have modified it to a pointer. Duplicate that
1728 if (IS_AGGREGATE (acargs->type))
1730 checkValue = copyValue (acargs);
1731 aggregateArgToPointer (checkValue);
1735 checkValue = acargs;
1738 if (compareType (exargs->type, checkValue->type) <= 0)
1740 werror (E_ARG_TYPE, argCnt);
1745 /* if one them ended we have a problem */
1746 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
1747 (!exargs && acargs && !IS_VOID (acargs->type)))
1748 werror (E_ARG_COUNT);
1750 /* replace with this defition */
1751 sym->cdef = csym->cdef;
1752 deleteSym (SymbolTab, csym, csym->name);
1753 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1754 if (IS_EXTERN (csym->etype) && !
1755 IS_EXTERN (sym->etype))
1757 addSet (&publics, sym);
1762 /*-----------------------------------------------------------------*/
1763 /* processFuncArgs - does some processing with function args */
1764 /*-----------------------------------------------------------------*/
1766 processFuncArgs (symbol * func, int ignoreName)
1771 /* if this function has variable argument list */
1772 /* then make the function a reentrant one */
1774 SPEC_RENT (func->etype) = 1;
1776 /* check if this function is defined as calleeSaves
1777 then mark it as such */
1778 func->calleeSave = inCalleeSaveList (func->name);
1780 val = func->args; /* loop thru all the arguments */
1782 /* if it is void then remove parameters */
1783 if (val && IS_VOID (val->type))
1789 /* reset regparm for the port */
1790 (*port->reset_regparms) ();
1791 /* if any of the arguments is an aggregate */
1792 /* change it to pointer to the same type */
1795 /* mark it as a register parameter if
1796 the function does not have VA_ARG
1797 and as port dictates */
1798 if (!func->hasVargs &&
1799 (*port->reg_parm) (val->type))
1801 SPEC_REGPARM (val->etype) = 1;
1804 if (IS_AGGREGATE (val->type))
1806 aggregateArgToPointer (val);
1812 /* if this is an internal generated function call */
1814 /* ignore --stack-auto for this one, we don't know how it is compiled */
1815 /* simply trust on --int-long-reent or --float-reent */
1816 if (IS_RENT(func->etype)) {
1820 /* if this function is reentrant or */
1821 /* automatics r 2b stacked then nothing */
1822 if (IS_RENT (func->etype) || options.stackAuto)
1831 /* if a symbolname is not given */
1832 /* synthesize a variable name */
1836 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1837 val->sym = newSymbol (val->name, 1);
1838 SPEC_OCLS (val->etype) = port->mem.default_local_map;
1839 val->sym->type = copyLinkChain (val->type);
1840 val->sym->etype = getSpec (val->sym->type);
1841 val->sym->_isparm = 1;
1842 strcpy (val->sym->rname, val->name);
1843 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1844 SPEC_STAT (func->etype);
1845 addSymChain (val->sym);
1848 else /* symbol name given create synth name */
1851 sprintf (val->name, "_%s_PARM_%d", func->name, pNum++);
1852 strcpy (val->sym->rname, val->name);
1853 val->sym->_isparm = 1;
1854 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
1855 (options.model != MODEL_SMALL ? xdata : data);
1856 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
1857 SPEC_STAT (func->etype);
1863 /*-----------------------------------------------------------------*/
1864 /* isSymbolEqual - compares two symbols return 1 if they match */
1865 /*-----------------------------------------------------------------*/
1867 isSymbolEqual (symbol * dest, symbol * src)
1869 /* if pointers match then equal */
1873 /* if one of them is null then don't match */
1877 /* if both of them have rname match on rname */
1878 if (dest->rname[0] && src->rname[0])
1879 return (!strcmp (dest->rname, src->rname));
1881 /* otherwise match on name */
1882 return (!strcmp (dest->name, src->name));
1885 void PT(sym_link *type)
1887 printTypeChain(type,0);
1889 /*-----------------------------------------------------------------*/
1890 /* printTypeChain - prints the type chain in human readable form */
1891 /*-----------------------------------------------------------------*/
1893 printTypeChain (sym_link * start, FILE * of)
1896 sym_link * type, * search;
1905 fprintf (of, "**err**");
1909 /* print the chain as it is written in the source: */
1910 /* start with the last entry */
1911 for (type = start; type && type->next; type = type->next)
1917 if (DCL_PTR_VOLATILE (type)) {
1918 fprintf (of, "volatile ");
1920 switch (DCL_TYPE (type))
1923 fprintf (of, "function");
1926 if (DCL_PTR_CONST (type))
1927 fprintf (of, "const ");
1928 fprintf (of, "generic *");
1931 if (DCL_PTR_CONST (type))
1932 fprintf (of, "const ");
1933 fprintf (of, "code *");
1936 if (DCL_PTR_CONST (type))
1937 fprintf (of, "const ");
1938 fprintf (of, "far *");
1941 if (DCL_PTR_CONST (type))
1942 fprintf (of, "const ");
1943 fprintf (of, "eeprom * ");
1947 if (DCL_PTR_CONST (type))
1948 fprintf (of, "const ");
1949 fprintf (of, "near *");
1952 if (DCL_PTR_CONST (type))
1953 fprintf (of, "const ");
1954 fprintf (of, "idata *");
1957 if (DCL_PTR_CONST (type))
1958 fprintf (of, "const ");
1959 fprintf (of, "pdata *");
1962 if (DCL_PTR_CONST (type))
1963 fprintf (of, "const ");
1964 fprintf (of, "unkown *");
1967 fprintf (of, "array of");
1973 if (SPEC_VOLATILE (type))
1974 fprintf (of, "volatile ");
1975 if (SPEC_USIGN (type))
1976 fprintf (of, "unsigned ");
1977 if (SPEC_CONST (type))
1978 fprintf (of, "const ");
1980 switch (SPEC_NOUN (type))
1984 fprintf (of, "long ");
1985 fprintf (of, "int");
1989 fprintf (of, "char");
1993 fprintf (of, "void");
1997 fprintf (of, "float");
2001 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2005 fprintf (of, "sbit");
2009 fprintf (of, "bit {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2013 fprintf (of, "double");
2017 fprintf (of, "unknown type");
2021 /* search entry in list before "type" */
2022 for (search = start; search && search->next != type;)
2023 search = search->next;
2032 /*-----------------------------------------------------------------*/
2033 /* cdbTypeInfo - print the type information for debugger */
2034 /*-----------------------------------------------------------------*/
2036 cdbTypeInfo (sym_link * type, FILE * of)
2038 fprintf (of, "{%d}", getSize (type));
2043 switch (DCL_TYPE (type))
2046 fprintf (of, "DF,");
2049 fprintf (of, "DG,");
2052 fprintf (of, "DC,");
2055 fprintf (of, "DX,");
2058 fprintf (of, "DD,");
2061 fprintf (of, "DI,");
2064 fprintf (of, "DP,");
2067 fprintf (of, "DA,");
2070 fprintf (of, "DA%d,", DCL_ELEM (type));
2078 switch (SPEC_NOUN (type))
2100 fprintf (of, "ST%s", SPEC_STRUCT (type)->tag);
2108 fprintf (of, "SB%d$%d", SPEC_BSTR (type), SPEC_BLEN (type));
2115 if (SPEC_USIGN (type))
2123 /*-----------------------------------------------------------------*/
2124 /* cdbSymbol - prints a symbol & its type information for debugger */
2125 /*-----------------------------------------------------------------*/
2127 cdbSymbol (symbol * sym, FILE * of, int isStructSym, int isFunc)
2139 fprintf (of, "S:"); /* symbol record */
2140 /* if this is not a structure symbol then
2141 we need to figure out the scope information */
2147 if (IS_STATIC (sym->etype))
2148 fprintf (of, "F%s$", moduleName); /* scope is file */
2150 fprintf (of, "G$"); /* scope is global */
2153 /* symbol is local */
2154 fprintf (of, "L%s$", (sym->localof ? sym->localof->name : "-null-"));
2157 fprintf (of, "S$"); /* scope is structure */
2159 /* print the name, & mangled name */
2160 fprintf (of, "%s$%d$%d(", sym->name,
2161 sym->level, sym->block);
2163 cdbTypeInfo (sym->type, of);
2166 /* print the address space */
2167 map = SPEC_OCLS (sym->etype);
2168 fprintf (of, "%c,%d,%d",
2169 (map ? map->dbName : 'Z'), sym->onStack, SPEC_STAK (sym->etype));
2171 /* if assigned to registers then output register names */
2172 /* if this is a function then print
2173 if is it an interrupt routine & interrupt number
2174 and the register bank it is using */
2176 fprintf (of, ",%d,%d,%d", SPEC_INTRTN (sym->etype),
2177 SPEC_INTN (sym->etype), SPEC_BANK (sym->etype));
2178 /* alternate location to find this symbol @ : eg registers
2185 /*-----------------------------------------------------------------*/
2186 /* cdbStruct - print a structure for debugger */
2187 /*-----------------------------------------------------------------*/
2189 cdbStruct (structdef * sdef, int block, FILE * of,
2190 int inStruct, char *tag)
2195 /* if block # then must have function scope */
2196 fprintf (of, "F%s$", moduleName);
2197 fprintf (of, "%s[", (tag ? tag : sdef->tag));
2198 for (sym = sdef->fields; sym; sym = sym->next)
2200 fprintf (of, "({%d}", sym->offset);
2201 cdbSymbol (sym, of, TRUE, FALSE);
2209 /*------------------------------------------------------------------*/
2210 /* cdbStructBlock - calls struct printing for a blcks */
2211 /*------------------------------------------------------------------*/
2213 cdbStructBlock (int block, FILE * of)
2216 bucket **table = StructTab;
2220 /* go thru the entire table */
2221 for (i = 0; i < 256; i++)
2223 for (chain = table[i]; chain; chain = chain->next)
2225 if (chain->block >= block)
2227 cdbStruct ((structdef *) chain->sym, chain->block, of, 0, NULL);
2233 /*-----------------------------------------------------------------*/
2234 /* powof2 - returns power of two for the number if number is pow 2 */
2235 /*-----------------------------------------------------------------*/
2237 powof2 (unsigned long num)
2250 if (n1s > 1 || nshifts == 0)
2266 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2267 symbol *__muldiv[3][3][2];
2268 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2269 sym_link *__multypes[3][2];
2270 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2271 symbol *__conv[2][3][2];
2272 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2273 symbol *__rlrr[2][3][2];
2275 sym_link *floatType;
2278 _mangleFunctionName(char *in)
2280 if (port->getMangledFunctionName)
2282 return port->getMangledFunctionName(in);
2290 /*-----------------------------------------------------------------*/
2291 /* initCSupport - create functions for C support routines */
2292 /*-----------------------------------------------------------------*/
2296 const char *smuldivmod[] =
2300 const char *sbwd[] =
2302 "char", "int", "long"
2308 const char *srlrr[] =
2313 int bwd, su, muldivmod, tofrom, rlrr;
2315 if (getenv("SDCC_NO_C_SUPPORT")) {
2316 /* for debugging only */
2320 floatType = newFloatLink ();
2322 for (bwd = 0; bwd < 3; bwd++)
2339 __multypes[bwd][0] = l;
2340 __multypes[bwd][1] = copyLinkChain (l);
2341 SPEC_USIGN (__multypes[bwd][1]) = 1;
2344 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
2345 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
2346 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
2347 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
2348 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
2349 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
2350 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
2351 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
2352 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
2353 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
2355 for (tofrom = 0; tofrom < 2; tofrom++)
2357 for (bwd = 0; bwd < 3; bwd++)
2359 for (su = 0; su < 2; su++)
2363 sprintf (buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
2364 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], floatType, 1, options.float_rent);
2368 sprintf (buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
2369 __conv[tofrom][bwd][su] = funcOfType (_mangleFunctionName(buffer), floatType, __multypes[bwd][su], 1, options.float_rent);
2375 for (muldivmod = 0; muldivmod < 3; muldivmod++)
2377 for (bwd = 0; bwd < 3; bwd++)
2379 for (su = 0; su < 2; su++)
2381 sprintf (buffer, "_%s%s%s",
2382 smuldivmod[muldivmod],
2385 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
2386 SPEC_NONBANKED (__muldiv[muldivmod][bwd][su]->etype) = 1;
2391 for (rlrr = 0; rlrr < 2; rlrr++)
2393 for (bwd = 0; bwd < 3; bwd++)
2395 for (su = 0; su < 2; su++)
2397 sprintf (buffer, "_%s%s%s",
2401 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
2402 SPEC_NONBANKED (__rlrr[rlrr][bwd][su]->etype) = 1;