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 -------------------------------------------------------------------------*/
29 value *aggregateToPointer (value *val);
30 void printTypeChainRaw (sym_link * start, FILE * of);
32 void printFromToType(sym_link *from, sym_link *to) {
33 fprintf (stderr, "from type '");
34 printTypeChain (from, stderr);
35 fprintf (stderr, "'\nto type '");
36 printTypeChain (to, stderr);
37 fprintf (stderr, "'\n");
41 char *nounName(sym_link *sl) {
42 switch (SPEC_NOUN(sl))
45 if (SPEC_LONG(sl)) return "long";
46 if (sl->select.s._short) return "short";
49 case V_FLOAT: return "float";
50 case V_CHAR: return "char";
51 case V_VOID: return "void";
52 case V_STRUCT: return "struct";
53 case V_LABEL: return "label";
54 case V_BITFIELD: return "bitfield";
55 case V_BIT: return "bit";
56 case V_SBIT: return "sbit";
57 case V_DOUBLE: return "double";
62 bucket *SymbolTab[256]; /* the symbol table */
63 bucket *StructTab[256]; /* the structure table */
64 bucket *TypedefTab[256]; /* the typedef table */
65 bucket *LabelTab[256]; /* the Label table */
66 bucket *enumTab[256]; /* enumerated table */
68 /*------------------------------------------------------------------*/
69 /* initSymt () - initialises symbol table related stuff */
70 /*------------------------------------------------------------------*/
76 for (i = 0; i < 256; i++)
77 SymbolTab[i] = StructTab[i] = (void *) NULL;
81 /*-----------------------------------------------------------------*/
82 /* newBucket - allocates & returns a new bucket */
83 /*-----------------------------------------------------------------*/
89 bp = Safe_alloc ( sizeof (bucket));
94 /*-----------------------------------------------------------------*/
95 /* hashKey - computes the hashkey given a symbol name */
96 /*-----------------------------------------------------------------*/
98 hashKey (const char *s)
100 unsigned long key = 0;
107 /*-----------------------------------------------------------------*/
108 /* addSym - adds a symbol to the hash Table */
109 /*-----------------------------------------------------------------*/
111 addSym (bucket ** stab,
118 int i; /* index into the hash Table */
119 bucket *bp; /* temp bucket * */
122 symbol *csym = (symbol *)sym;
124 if (getenv("DEBUG_SANITY")) {
125 fprintf (stderr, "addSym: %s ", sname);
127 /* make sure the type is complete and sane */
128 checkTypeSanity(csym->etype, csym->name);
131 /* prevent overflow of the (r)name buffers */
132 if (strlen(sname)>SDCC_SYMNAME_MAX) {
133 werror (W_SYMBOL_NAME_TOO_LONG, SDCC_SYMNAME_MAX);
134 sname[SDCC_SYMNAME_MAX]='\0';
137 /* the symbols are always added at the head of the list */
139 /* get a free entry */
140 bp = Safe_alloc ( sizeof (bucket));
142 bp->sym = sym; /* update the symbol pointer */
143 bp->level = level; /* update the nest level */
145 strncpyz (bp->name, sname, sizeof(bp->name)); /* copy the name into place */
147 /* if this is the first entry */
150 bp->prev = bp->next = (void *) NULL; /* point to nothing */
153 /* not first entry then add @ head of list */
163 /*-----------------------------------------------------------------*/
164 /* deleteSym - deletes a symbol from the hash Table entry */
165 /*-----------------------------------------------------------------*/
167 deleteSym (bucket ** stab, void *sym, char *sname)
175 /* find the symbol */
178 if (bp->sym == sym) /* found it then break out */
179 break; /* of the loop */
183 if (!bp) /* did not find it */
185 /* if this is the first one in the chain */
189 if (stab[i]) /* if chain ! empty */
190 stab[i]->prev = (void *) NULL;
192 /* middle || end of chain */
195 if (bp->next) /* if not end of chain */
196 bp->next->prev = bp->prev;
198 bp->prev->next = bp->next;
203 /*-----------------------------------------------------------------*/
204 /* findSym - finds a symbol in a table */
205 /*-----------------------------------------------------------------*/
207 findSym (bucket ** stab, void *sym, const char *sname)
211 bp = stab[hashKey (sname)];
214 if (bp->sym == sym || strcmp (bp->name, sname) == 0)
219 return (bp ? bp->sym : (void *) NULL);
222 /*-----------------------------------------------------------------*/
223 /* findSymWithLevel - finds a symbol with a name & level */
224 /*-----------------------------------------------------------------*/
226 findSymWithLevel (bucket ** stab, symbol * sym)
230 bp = stab[hashKey (sym->name)];
233 ** do the search from the head of the list since the
234 ** elements are added at the head it is ensured that
235 ** we will find the deeper definitions before we find
236 ** the global ones. we need to check for symbols with
237 ** level <= to the level given, if levels match then block
238 ** numbers need to match as well
242 if (strcmp (bp->name, sym->name) == 0 && bp->level <= sym->level)
244 /* if this is parameter then nothing else need to be checked */
245 if (((symbol *) (bp->sym))->_isparm)
247 /* if levels match then block numbers should also match */
248 if (bp->level && bp->level == sym->level && bp->block == sym->block)
250 /* if levels don't match then we are okay */
251 if (bp->level && bp->level != sym->level && bp->block <= sym->block)
253 /* if this is a global variable then we are ok too */
261 return (void *) NULL;
264 /*-----------------------------------------------------------------*/
265 /* findSymWithBlock - finds a symbol with name in with a block */
266 /*-----------------------------------------------------------------*/
268 findSymWithBlock (bucket ** stab, symbol * sym, int block)
272 bp = stab[hashKey (sym->name)];
275 if (strcmp (bp->name, sym->name) == 0 &&
281 return (bp ? bp->sym : (void *) NULL);
284 /*------------------------------------------------------------------*/
285 /* newSymbol () - returns a new pointer to a symbol */
286 /*------------------------------------------------------------------*/
288 newSymbol (char *name, int scope)
292 sym = Safe_alloc ( sizeof (symbol));
294 strncpyz (sym->name, name, sizeof(sym->name)); /* copy the name */
295 sym->level = scope; /* set the level */
296 sym->block = currBlockno;
297 sym->lineDef = mylineno; /* set the line number */
298 sym->fileDef = currFname;
302 /*------------------------------------------------------------------*/
303 /* newLink - creates a new link (declarator,specifier) */
304 /*------------------------------------------------------------------*/
306 newLink (SYM_LINK_CLASS select)
310 p = Safe_alloc ( sizeof (sym_link));
316 /*------------------------------------------------------------------*/
317 /* newStruct - creats a new structdef from the free list */
318 /*------------------------------------------------------------------*/
320 newStruct (char *tag)
324 s = Safe_alloc ( sizeof (structdef));
326 strncpyz (s->tag, tag, sizeof(s->tag)); /* copy the tag */
330 /*------------------------------------------------------------------*/
331 /* sclsFromPtr - Return the storage class a pointer points into. */
332 /* S_FIXED is returned for generic pointers or other */
333 /* unexpected cases */
334 /*------------------------------------------------------------------*/
336 sclsFromPtr(sym_link *ptr)
338 switch (DCL_TYPE (ptr))
361 /*------------------------------------------------------------------*/
362 /* pointerTypes - do the computation for the pointer types */
363 /*------------------------------------------------------------------*/
365 pointerTypes (sym_link * ptr, sym_link * type)
370 /* find the first pointer type */
371 while (ptr && !IS_PTR (ptr))
374 /* could not find it */
375 if (!ptr || IS_SPEC (ptr))
378 if (IS_PTR(ptr) && DCL_TYPE(ptr)!=UPOINTER) {
379 pointerTypes (ptr->next, type);
383 /* change the pointer type depending on the
384 storage class of the type */
387 switch (SPEC_SCLS (type))
390 DCL_TYPE (ptr) = FPOINTER;
393 DCL_TYPE (ptr) = IPOINTER;
396 DCL_TYPE (ptr) = PPOINTER;
399 DCL_TYPE (ptr) = POINTER;
402 DCL_TYPE (ptr) = CPOINTER;
405 DCL_TYPE (ptr) = EEPPOINTER;
408 DCL_TYPE (ptr) = port->unqualified_pointer;
411 /* the storage class of type ends here */
412 SPEC_SCLS (type) = 0;
415 /* now change all the remaining unknown pointers
416 to generic pointers */
419 if (!IS_SPEC (ptr) && DCL_TYPE (ptr) == UPOINTER)
420 DCL_TYPE (ptr) = port->unqualified_pointer;
424 /* same for the type although it is highly unlikely that
425 type will have a pointer */
428 if (!IS_SPEC (type) && DCL_TYPE (type) == UPOINTER)
429 DCL_TYPE (type) = port->unqualified_pointer;
434 /*------------------------------------------------------------------*/
435 /* addDecl - adds a declarator @ the end of a chain */
436 /*------------------------------------------------------------------*/
438 addDecl (symbol * sym, int type, sym_link * p)
444 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
445 fprintf (stderr, "SDCCsymt.c:addDecl(%s,%d,%p)\n", sym->name, type, p);
447 /* if we are passed a link then set head & tail */
456 head = tail = newLink (DECLARATOR);
457 DCL_TYPE (head) = type;
460 /* if this is the first entry */
468 if (IS_SPEC (sym->etype) && IS_SPEC (head) && head == tail)
470 sym->etype = mergeSpec (sym->etype, head, sym->name);
474 if (IS_SPEC (sym->etype) && !IS_SPEC (head) && head == tail)
477 while (t->next != sym->etype)
480 tail->next = sym->etype;
484 sym->etype->next = head;
490 /* if the type is an unknown pointer and has
491 a tspec then take the storage class const & volatile
492 attribute from the tspec & make it those of this
496 //DCL_TYPE (p) == UPOINTER &&
499 if (!IS_SPEC (sym->etype))
501 sym->etype = sym->etype->next = newLink (SPECIFIER);
503 SPEC_SCLS (sym->etype) = SPEC_SCLS (DCL_TSPEC (p));
504 DCL_TSPEC (p) = NULL;
507 // if there is a function in this type chain
508 if (p && funcInChain(sym->type)) {
509 processFuncArgs (sym);
515 /*------------------------------------------------------------------
516 checkTypeSanity: prevent the user from doing e.g.:
518 ------------------------------------------------------------------*/
519 void checkTypeSanity(sym_link *etype, char *name) {
523 if (getenv("DEBUG_SANITY")) {
524 fprintf (stderr, "sanity check skipped for %s (etype==0)\n", name);
529 if (!IS_SPEC(etype)) {
530 if (getenv("DEBUG_SANITY")) {
531 fprintf (stderr, "sanity check skipped for %s (!IS_SPEC)\n", name);
536 noun=nounName(etype);
538 if (getenv("DEBUG_SANITY")) {
539 fprintf (stderr, "checking sanity for %s %p\n", name, etype);
542 if ((SPEC_NOUN(etype)==V_CHAR ||
543 SPEC_NOUN(etype)==V_FLOAT ||
544 SPEC_NOUN(etype)==V_DOUBLE ||
545 SPEC_NOUN(etype)==V_VOID) &&
546 (etype->select.s._short || SPEC_LONG(etype))) {
547 // long or short for char float double or void
548 werror (E_LONG_OR_SHORT_INVALID, noun, name);
550 if ((SPEC_NOUN(etype)==V_FLOAT ||
551 SPEC_NOUN(etype)==V_DOUBLE ||
552 SPEC_NOUN(etype)==V_VOID) &&
553 (etype->select.s._signed || SPEC_USIGN(etype))) {
554 // signed or unsigned for float double or void
555 werror (E_SIGNED_OR_UNSIGNED_INVALID, noun, name);
558 // special case for "short"
559 if (etype->select.s._short) {
560 SPEC_NOUN(etype) = options.shortis8bits ? V_CHAR : V_INT;
561 etype->select.s._short = 0;
565 "const a;" or "data b;" or "signed s" or "long l"
567 if (!SPEC_NOUN(etype)) {
568 SPEC_NOUN(etype)=V_INT;
571 /* ISO/IEC 9899 J.3.9 implementation defined behaviour: */
572 /* a "plain" int bitfield is unsigned */
573 if (SPEC_NOUN(etype)==V_BIT ||
574 SPEC_NOUN(etype)==V_SBIT) {
575 if (!etype->select.s._signed)
576 SPEC_USIGN(etype) = 1;
579 if (etype->select.s._signed && SPEC_USIGN(etype)) {
580 // signed AND unsigned
581 werror (E_SIGNED_AND_UNSIGNED_INVALID, noun, name);
583 if (etype->select.s._short && SPEC_LONG(etype)) {
585 werror (E_LONG_AND_SHORT_INVALID, noun, name);
590 /*------------------------------------------------------------------*/
591 /* mergeSpec - merges two specifiers and returns the new one */
592 /*------------------------------------------------------------------*/
594 mergeSpec (sym_link * dest, sym_link * src, char *name)
596 if (!IS_SPEC(dest) || !IS_SPEC(src)) {
598 werror (E_INTERNAL_ERROR, __FILE__, __LINE__, "cannot merge declarator");
601 werror (E_SYNTAX_ERROR, yytext);
602 // the show must go on
607 if (SPEC_NOUN(src)) {
608 if (!SPEC_NOUN(dest)) {
609 SPEC_NOUN(dest)=SPEC_NOUN(src);
611 /* we shouldn't redeclare the type */
612 if (getenv("DEBUG_SANITY")) {
613 fprintf (stderr, "mergeSpec: ");
615 werror(E_TWO_OR_MORE_DATA_TYPES, name);
619 if (SPEC_SCLS(src)) {
620 /* if destination has no storage class */
621 if (!SPEC_SCLS (dest) || SPEC_SCLS(dest)==S_REGISTER) {
622 SPEC_SCLS (dest) = SPEC_SCLS (src);
624 if (getenv("DEBUG_SANITY")) {
625 fprintf (stderr, "mergeSpec: ");
627 werror(E_TWO_OR_MORE_STORAGE_CLASSES, name);
631 /* copy all the specifications */
633 // we really should do:
635 if (SPEC_what(src)) {
636 if (SPEC_what(dest)) {
637 werror(W_DUPLICATE_SPEC, "what");
639 SPEC_what(dst)|=SPEC_what(src);
642 // but there are more important thing right now
644 SPEC_LONG (dest) |= SPEC_LONG (src);
645 dest->select.s._short|=src->select.s._short;
646 SPEC_USIGN (dest) |= SPEC_USIGN (src);
647 dest->select.s._signed|=src->select.s._signed;
648 SPEC_STAT (dest) |= SPEC_STAT (src);
649 SPEC_EXTR (dest) |= SPEC_EXTR (src);
650 SPEC_CONST(dest) |= SPEC_CONST (src);
651 SPEC_ABSA (dest) |= SPEC_ABSA (src);
652 SPEC_VOLATILE (dest) |= SPEC_VOLATILE (src);
653 SPEC_ADDR (dest) |= SPEC_ADDR (src);
654 SPEC_OCLS (dest) = SPEC_OCLS (src);
655 SPEC_BLEN (dest) |= SPEC_BLEN (src);
656 SPEC_BSTR (dest) |= SPEC_BSTR (src);
657 SPEC_TYPEDEF (dest) |= SPEC_TYPEDEF (src);
658 SPEC_ENUM (dest) |= SPEC_ENUM (src);
659 if (SPEC_ARGREG(src) && !SPEC_ARGREG(dest))
660 SPEC_ARGREG(dest) = SPEC_ARGREG(src);
662 if (IS_STRUCT (dest) && SPEC_STRUCT (dest) == NULL)
663 SPEC_STRUCT (dest) = SPEC_STRUCT (src);
665 /* these are the only function attributes that will be set
666 in a specifier while parsing */
667 FUNC_NONBANKED(dest) |= FUNC_NONBANKED(src);
668 FUNC_BANKED(dest) |= FUNC_BANKED(src);
669 FUNC_ISCRITICAL(dest) |= FUNC_ISCRITICAL(src);
670 FUNC_ISREENT(dest) |= FUNC_ISREENT(src);
671 FUNC_ISNAKED(dest) |= FUNC_ISNAKED(src);
672 FUNC_ISISR(dest) |= FUNC_ISISR(src);
673 FUNC_ISJAVANATIVE(dest) |= FUNC_ISJAVANATIVE(src);
674 FUNC_ISBUILTIN(dest) |= FUNC_ISBUILTIN(src);
675 FUNC_ISOVERLAY(dest) |= FUNC_ISOVERLAY(src);
676 FUNC_INTNO(dest) |= FUNC_INTNO(src);
677 FUNC_REGBANK(dest) |= FUNC_REGBANK(src);
682 /*------------------------------------------------------------------*/
683 /* genSymName - generates and returns a name used for anonymous vars */
684 /*------------------------------------------------------------------*/
686 genSymName (int level)
688 static int gCount = 0;
689 static char gname[SDCC_NAME_MAX + 1];
691 SNPRINTF (gname, sizeof(gname), "__%04d%04d", level, gCount++);
695 /*------------------------------------------------------------------*/
696 /* getSpec - returns the specifier part from a declaration chain */
697 /*------------------------------------------------------------------*/
699 getSpec (sym_link * p)
704 while (p && !(IS_SPEC (p)))
710 /*------------------------------------------------------------------*/
711 /* newCharLink() - creates an char type */
712 /*------------------------------------------------------------------*/
718 p = newLink (SPECIFIER);
719 SPEC_NOUN (p) = V_CHAR;
724 /*------------------------------------------------------------------*/
725 /* newFloatLink - a new Float type */
726 /*------------------------------------------------------------------*/
732 p = newLink (SPECIFIER);
733 SPEC_NOUN (p) = V_FLOAT;
738 /*------------------------------------------------------------------*/
739 /* newLongLink() - new long type */
740 /*------------------------------------------------------------------*/
746 p = newLink (SPECIFIER);
747 SPEC_NOUN (p) = V_INT;
753 /*------------------------------------------------------------------*/
754 /* newIntLink() - creates an int type */
755 /*------------------------------------------------------------------*/
761 p = newLink (SPECIFIER);
762 SPEC_NOUN (p) = V_INT;
767 /*------------------------------------------------------------------*/
768 /* getSize - returns size of a type chain in bits */
769 /*------------------------------------------------------------------*/
771 getSize (sym_link * p)
773 /* if nothing return 0 */
777 { /* if this is the specifier then */
778 switch (SPEC_NOUN (p))
779 { /* depending on the specifier type */
781 return (IS_LONG (p) ? LONGSIZE : INTSIZE);
789 return SPEC_STRUCT (p)->size;
796 return ((SPEC_BLEN (p) / 8) + (SPEC_BLEN (p) % 8 ? 1 : 0));
802 /* this is a declarator */
803 switch (DCL_TYPE (p))
807 return DCL_ELEM (p) * getSize (p->next);
809 // werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
810 // "can not tell the size of an array[]");
830 /*---------------------------------------------------------------------*/
831 /* getAllocSize - returns size of a type chain in bytes for allocation */
832 /*---------------------------------------------------------------------*/
834 getAllocSize (sym_link *p)
836 if (IS_STRUCT (p) && SPEC_STRUCT (p)->type == STRUCT)
838 /* if this is a struct specifier then */
839 /* calculate the size as it could end */
840 /* with an array of unspecified length */
841 symbol *sflds = SPEC_STRUCT (p)->fields;
843 while (sflds && sflds->next)
846 if (sflds && !IS_BITFIELD (sflds->type))
847 return sflds->offset + getAllocSize (sflds->type);
849 return SPEC_STRUCT (p)->size;
855 /*------------------------------------------------------------------*/
856 /* bitsForType - returns # of bits required to store this type */
857 /*------------------------------------------------------------------*/
859 bitsForType (sym_link * p)
861 /* if nothing return 0 */
866 { /* if this is the specifier then */
868 switch (SPEC_NOUN (p))
869 { /* depending on the specifier type */
871 return (IS_LONG (p) ? LONGSIZE * 8 : INTSIZE * 8);
873 return FLOATSIZE * 8;
879 return SPEC_STRUCT (p)->size * 8;
886 return SPEC_BLEN (p);
892 /* this is a specifier */
893 switch (DCL_TYPE (p))
896 return DCL_ELEM (p) * getSize (p->next) * 8;
900 return (PTRSIZE * 8);
905 return (FPTRSIZE * 8);
907 return (GPTRSIZE * 8);
914 /*------------------------------------------------------------------*/
915 /* copySymbolChain - copies a symbol chain */
916 /*------------------------------------------------------------------*/
918 copySymbolChain (symbol * src)
925 dest = copySymbol (src);
926 dest->next = copySymbolChain (src->next);
930 /*------------------------------------------------------------------*/
931 /* copySymbol - makes a copy of a symbol */
932 /*------------------------------------------------------------------*/
934 copySymbol (symbol * src)
941 dest = newSymbol (src->name, src->level);
942 memcpy (dest, src, sizeof (symbol));
943 dest->level = src->level;
944 dest->block = src->block;
945 dest->ival = copyIlist (src->ival);
946 dest->type = copyLinkChain (src->type);
947 dest->etype = getSpec (dest->type);
949 dest->key = src->key;
950 dest->allocreq = src->allocreq;
954 /*------------------------------------------------------------------*/
955 /* reverseSyms - reverses the links for a symbol chain */
956 /*------------------------------------------------------------------*/
958 reverseSyms (symbol * sym)
960 symbol *prev, *curr, *next;
975 sym->next = (void *) NULL;
979 /*------------------------------------------------------------------*/
980 /* reverseLink - reverses the links for a type chain */
981 /*------------------------------------------------------------------*/
983 reverseLink (sym_link * type)
985 sym_link *prev, *curr, *next;
1000 type->next = (void *) NULL;
1004 /*------------------------------------------------------------------*/
1005 /* addSymChain - adds a symbol chain to the symboltable */
1006 /*------------------------------------------------------------------*/
1008 addSymChain (symbol * symHead)
1010 symbol *sym = symHead;
1011 symbol *csym = NULL;
1014 for (; sym != NULL; sym = sym->next)
1017 checkTypeSanity(sym->etype, sym->name);
1019 if (!sym->level && !(IS_SPEC(sym->etype) && IS_TYPEDEF(sym->etype)))
1022 /* if already exists in the symbol table then check if
1023 one of them is an extern definition if yes then
1024 then check if the type match, if the types match then
1025 delete the current entry and add the new entry */
1026 if ((csym = findSymWithLevel (SymbolTab, sym)) &&
1027 csym->level == sym->level) {
1029 /* If the previous definition was for an array with incomplete */
1030 /* type, and the new definition has completed the type, update */
1031 /* the original type to match */
1032 if (IS_DECL(csym->type) && DCL_TYPE(csym->type)==ARRAY
1033 && IS_DECL(sym->type) && DCL_TYPE(sym->type)==ARRAY)
1035 if (!DCL_ELEM(csym->type) && DCL_ELEM(sym->type))
1036 DCL_ELEM(csym->type) = DCL_ELEM(sym->type);
1040 /* If only one of the definitions used the "at" keyword, copy */
1041 /* the address to the other. */
1042 if (IS_SPEC(csym->etype) && SPEC_ABSA(csym->etype)
1043 && IS_SPEC(sym->etype) && !SPEC_ABSA(sym->etype))
1045 SPEC_ABSA (sym->etype) = 1;
1046 SPEC_ADDR (sym->etype) = SPEC_ADDR (csym->etype);
1048 if (IS_SPEC(csym->etype) && !SPEC_ABSA(csym->etype)
1049 && IS_SPEC(sym->etype) && SPEC_ABSA(sym->etype))
1051 SPEC_ABSA (csym->etype) = 1;
1052 SPEC_ADDR (csym->etype) = SPEC_ADDR (sym->etype);
1057 if (csym->ival && sym->ival)
1059 if (compareTypeExact (csym->type, sym->type, sym->level) != 1)
1063 /* one definition extern ? */
1064 if (IS_EXTERN (csym->etype) || IS_EXTERN (sym->etype))
1065 werror (E_EXTERN_MISMATCH, sym->name);
1067 werror (E_DUPLICATE, sym->name);
1068 werrorfl (csym->fileDef, csym->lineDef, E_PREVIOUS_DEF);
1070 fprintf (stderr, "from type '");
1071 printTypeChain (csym->type, stderr);
1072 if (IS_SPEC (csym->etype) && SPEC_ABSA (csym->etype))
1073 fprintf(stderr, " at 0x%x", SPEC_ADDR (csym->etype));
1074 fprintf (stderr, "'\nto type '");
1075 printTypeChain (sym->type, stderr);
1076 if (IS_SPEC (sym->etype) && SPEC_ABSA (sym->etype))
1077 fprintf(stderr, " at 0x%x", SPEC_ADDR (sym->etype));
1078 fprintf (stderr, "'\n");
1083 if (csym->ival && !sym->ival)
1084 sym->ival = csym->ival;
1086 /* delete current entry */
1087 deleteSym (SymbolTab, csym, csym->name);
1088 deleteFromSeg(csym);
1092 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
1097 /*------------------------------------------------------------------*/
1098 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
1099 /*------------------------------------------------------------------*/
1101 funcInChain (sym_link * lnk)
1112 /*------------------------------------------------------------------*/
1113 /* structElemType - returns the type info of a struct member */
1114 /*------------------------------------------------------------------*/
1116 structElemType (sym_link * stype, value * id)
1118 symbol *fields = (SPEC_STRUCT (stype) ? SPEC_STRUCT (stype)->fields : NULL);
1119 sym_link *type, *etype;
1120 sym_link *petype = getSpec (stype);
1124 /* look for the id */
1127 if (strcmp (fields->rname, id->name) == 0)
1129 type = copyLinkChain (fields->type);
1130 etype = getSpec (type);
1131 SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ?
1132 SPEC_SCLS (etype) : SPEC_SCLS (petype));
1134 SPEC_CONST (type) |= SPEC_CONST (stype);
1136 DCL_PTR_CONST (type) |= SPEC_CONST (stype);
1139 fields = fields->next;
1143 werror (E_NOT_MEMBER, id->name);
1145 // the show must go on
1146 return newIntLink();
1149 /*------------------------------------------------------------------*/
1150 /* getStructElement - returns element of a tructure definition */
1151 /*------------------------------------------------------------------*/
1153 getStructElement (structdef * sdef, symbol * sym)
1157 for (field = sdef->fields; field; field = field->next)
1158 if (strcmp (field->name, sym->name) == 0)
1161 werror (E_NOT_MEMBER, sym->name);
1163 return sdef->fields;
1166 /*------------------------------------------------------------------*/
1167 /* compStructSize - computes the size of a structure */
1168 /*------------------------------------------------------------------*/
1170 compStructSize (int su, structdef * sdef)
1172 int sum = 0, usum = 0;
1176 /* for the identifiers */
1177 loop = sdef->fields;
1180 /* create the internal name for this variable */
1181 SNPRINTF (loop->rname, sizeof(loop->rname), "_%s", loop->name);
1186 SPEC_VOLATILE (loop->etype) |= (su == UNION ? 1 : 0);
1188 /* if this is a bit field */
1191 /* change it to a unsigned bit */
1192 SPEC_NOUN (loop->etype) = V_BITFIELD;
1193 SPEC_USIGN (loop->etype) = 1;
1194 SPEC_BLEN (loop->etype) = loop->bitVar;
1196 if (loop->bitVar == BITVAR_PAD) {
1197 /* A zero length bitfield forces padding */
1198 SPEC_BSTR (loop->etype) = bitOffset;
1199 SPEC_BLEN (loop->etype) = 0;
1204 if (bitOffset == 8) {
1208 /* check if this fit into the remaining */
1209 /* bits of this byte else align it to the */
1210 /* next byte boundary */
1211 if (loop->bitVar <= (8 - bitOffset)) {
1212 /* fits into current byte */
1214 SPEC_BSTR (loop->etype) = bitOffset;
1215 bitOffset += loop->bitVar;
1217 else if (!bitOffset) {
1218 /* does not fit, but is already byte aligned */
1220 SPEC_BSTR (loop->etype) = bitOffset;
1221 bitOffset += loop->bitVar;
1224 /* does not fit; need to realign first */
1226 loop->offset = (su == UNION ? sum = 0 : sum);
1228 SPEC_BSTR (loop->etype) = bitOffset;
1229 bitOffset += loop->bitVar;
1231 while (bitOffset>8) {
1238 /* This is a non-bit field. Make sure we are */
1239 /* byte aligned first */
1242 loop->offset = (su == UNION ? sum = 0 : sum);
1246 checkDecl (loop, 1);
1247 sum += getSize (loop->type);
1252 /* if union then size = sizeof larget field */
1254 /* For UNION, round up after each field */
1255 sum += ((bitOffset+7)/8);
1256 usum = max (usum, sum);
1261 /* For STRUCT, round up after all fields processed */
1263 sum += ((bitOffset+7)/8);
1265 return (su == UNION ? usum : sum);
1268 /*-------------------------------------------------------------------*/
1269 /* promoteAnonStructs - promote anonymous struct/union's fields into */
1270 /* an enclosing struct/union */
1271 /*-------------------------------------------------------------------*/
1273 promoteAnonStructs (int su, structdef * sdef)
1282 tofield = &sdef->fields;
1283 field = sdef->fields;
1286 nextfield = field->next;
1287 if (!*field->name && IS_STRUCT (field->type))
1289 /* Found an anonymous struct/union. Replace it */
1290 /* with the fields it contains and adjust all */
1293 base = field->offset;
1294 subfield = copySymbolChain (SPEC_STRUCT (field->type)->fields);
1296 continue; /* just in case it's empty */
1298 *tofield = subfield;
1301 /* check for field name conflicts resulting from promotion */
1302 dupfield = sdef->fields;
1303 while (dupfield && dupfield != subfield)
1305 if (*subfield->name && !strcmp (dupfield->name, subfield->name))
1307 werrorfl (subfield->fileDef, subfield->lineDef,
1309 su==STRUCT ? "struct" : "union",
1311 werrorfl (dupfield->fileDef, dupfield->lineDef,
1314 dupfield = dupfield->next;
1317 subfield->offset += base;
1319 subfield = subfield->next;
1323 subfield->next = nextfield;
1324 tofield = &subfield->next;
1327 tofield = &field->next;
1333 /*------------------------------------------------------------------*/
1334 /* checkSClass - check the storage class specification */
1335 /*------------------------------------------------------------------*/
1337 checkSClass (symbol * sym, int isProto)
1341 if (getenv("DEBUG_SANITY")) {
1342 fprintf (stderr, "checkSClass: %s \n", sym->name);
1345 /* type is literal can happen for enums change
1347 if (SPEC_SCLS (sym->etype) == S_LITERAL && !SPEC_ENUM (sym->etype))
1348 SPEC_SCLS (sym->etype) = S_AUTO;
1350 /* if sfr or sbit then must also be volatile */
1351 if (SPEC_SCLS (sym->etype) == S_SBIT ||
1352 SPEC_SCLS (sym->etype) == S_SFR)
1354 SPEC_VOLATILE (sym->etype) = 1;
1357 /* if absolute address given then it mark it as
1358 volatile -- except in the PIC port */
1360 #if !OPT_DISABLE_PIC || !OPT_DISABLE_PIC16
1361 /* The PIC port uses a different peep hole optimizer based on "pCode" */
1362 if (!TARGET_IS_PIC && !TARGET_IS_PIC16)
1365 if (IS_ABSOLUTE (sym->etype))
1366 SPEC_VOLATILE (sym->etype) = 1;
1368 /* If code memory is read only, then pointers to code memory */
1369 /* implicitly point to constants -- make this explicit */
1371 while (t && t->next) {
1372 if (IS_CODEPTR(t) && port->mem.code_ro) {
1373 if (IS_SPEC(t->next)) {
1374 SPEC_CONST (t->next) = 1;
1376 DCL_PTR_CONST (t->next) = 1;
1382 /* global variables declared const put into code */
1383 /* if no other storage class specified */
1384 if (sym->level == 0 &&
1385 SPEC_SCLS(sym->etype) == S_FIXED &&
1386 !IS_FUNC(sym->type)) {
1387 /* find the first non-array link */
1391 if (IS_CONSTANT (t)) {
1392 SPEC_SCLS (sym->etype) = S_CODE;
1396 /* global variable in code space is a constant */
1397 if (sym->level == 0 &&
1398 SPEC_SCLS (sym->etype) == S_CODE &&
1399 port->mem.code_ro) {
1400 /* find the first non-array link */
1407 DCL_PTR_CONST (t) = 1;
1411 /* if bit variable then no storage class can be */
1412 /* specified since bit is already a storage */
1413 if (IS_BITVAR (sym->etype) &&
1414 (SPEC_SCLS (sym->etype) != S_FIXED &&
1415 SPEC_SCLS (sym->etype) != S_SBIT &&
1416 SPEC_SCLS (sym->etype) != S_BIT)
1419 werror (E_BITVAR_STORAGE, sym->name);
1420 SPEC_SCLS (sym->etype) = S_FIXED;
1423 /* extern variables cannot be initialized */
1424 if (IS_EXTERN (sym->etype) && sym->ival)
1426 werror (E_EXTERN_INIT, sym->name);
1430 /* if this is an automatic symbol */
1431 if (sym->level && (options.stackAuto || reentrant)) {
1432 if ((SPEC_SCLS (sym->etype) == S_AUTO ||
1433 SPEC_SCLS (sym->etype) == S_FIXED ||
1434 SPEC_SCLS (sym->etype) == S_REGISTER ||
1435 SPEC_SCLS (sym->etype) == S_STACK ||
1436 SPEC_SCLS (sym->etype) == S_XSTACK)) {
1437 SPEC_SCLS (sym->etype) = S_AUTO;
1439 /* storage class may only be specified for statics */
1440 if (!IS_STATIC(sym->etype)) {
1441 werror (E_AUTO_ASSUMED, sym->name);
1446 /* automatic symbols cannot be given */
1447 /* an absolute address ignore it */
1449 SPEC_ABSA (sym->etype) &&
1450 (options.stackAuto || reentrant))
1452 werror (E_AUTO_ABSA, sym->name);
1453 SPEC_ABSA (sym->etype) = 0;
1456 /* arrays & pointers cannot be defined for bits */
1457 /* SBITS or SFRs or BIT */
1458 if ((IS_ARRAY (sym->type) || IS_PTR (sym->type)) &&
1459 (SPEC_NOUN (sym->etype) == V_BIT ||
1460 SPEC_NOUN (sym->etype) == V_SBIT ||
1461 SPEC_NOUN (sym->etype) == V_BITFIELD ||
1462 SPEC_SCLS (sym->etype) == S_SFR))
1463 werror (E_BIT_ARRAY, sym->name);
1465 /* if this is a bit|sbit then set length & start */
1466 if (SPEC_NOUN (sym->etype) == V_BIT ||
1467 SPEC_NOUN (sym->etype) == V_SBIT)
1469 SPEC_BLEN (sym->etype) = 1;
1470 SPEC_BSTR (sym->etype) = 0;
1474 /* variables declared in CODE space must have */
1475 /* initializers if not an extern */
1476 if (SPEC_SCLS (sym->etype) == S_CODE &&
1477 sym->ival == NULL &&
1479 port->mem.code_ro &&
1480 !IS_EXTERN (sym->etype) &&
1481 !funcInChain (sym->type))
1482 werror (E_CODE_NO_INIT, sym->name);
1485 /* if parameter or local variable then change */
1486 /* the storage class to reflect where the var will go */
1487 if (sym->level && SPEC_SCLS (sym->etype) == S_FIXED &&
1488 !IS_STATIC(sym->etype))
1490 if (options.stackAuto || (currFunc && IFFUNC_ISREENT (currFunc->type)))
1492 SPEC_SCLS (sym->etype) = (options.useXstack ?
1493 S_XSTACK : S_STACK);
1497 /* hack-o-matic! I see no reason why the useXstack option should ever
1498 * control this allcoation, but the code was originally that way, and
1499 * changing it for non-390 ports breaks the compiler badly.
1501 bool useXdata = (TARGET_IS_DS390 || TARGET_IS_DS400) ?
1502 1 : options.useXstack;
1503 SPEC_SCLS (sym->etype) = (useXdata ?
1509 /*------------------------------------------------------------------*/
1510 /* changePointer - change pointer to functions */
1511 /*------------------------------------------------------------------*/
1513 changePointer (symbol * sym)
1517 /* go thru the chain of declarations */
1518 /* if we find a pointer to a function */
1519 /* unconditionally change it to a ptr */
1521 for (p = sym->type; p; p = p->next)
1523 if (!IS_SPEC (p) && DCL_TYPE (p) == UPOINTER)
1524 DCL_TYPE (p) = port->unqualified_pointer;
1525 if (IS_PTR (p) && IS_FUNC (p->next))
1526 DCL_TYPE (p) = CPOINTER;
1530 /*------------------------------------------------------------------*/
1531 /* checkDecl - does semantic validation of a declaration */
1532 /*------------------------------------------------------------------*/
1534 checkDecl (symbol * sym, int isProto)
1537 checkSClass (sym, isProto); /* check the storage class */
1538 changePointer (sym); /* change pointers if required */
1540 /* if this is an array without any dimension
1541 then update the dimension from the initial value */
1542 if (IS_ARRAY (sym->type) && !DCL_ELEM (sym->type))
1543 DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival);
1548 /*------------------------------------------------------------------*/
1549 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1550 /*------------------------------------------------------------------*/
1552 copyLinkChain (sym_link * p)
1554 sym_link *head, *curr, *loop;
1557 head = loop = (curr ? newLink (p->class) : (void *) NULL);
1560 memcpy (loop, curr, sizeof (sym_link)); /* copy it */
1561 loop->next = (curr->next ? newLink (curr->next->class) : (void *) NULL);
1570 /*------------------------------------------------------------------*/
1571 /* cleanUpBlock - cleansup the symbol table specified for all the */
1572 /* symbols in the given block */
1573 /*------------------------------------------------------------------*/
1575 cleanUpBlock (bucket ** table, int block)
1580 /* go thru the entire table */
1581 for (i = 0; i < 256; i++)
1583 for (chain = table[i]; chain; chain = chain->next)
1585 if (chain->block >= block)
1587 deleteSym (table, chain->sym, chain->name);
1593 /*------------------------------------------------------------------*/
1594 /* cleanUpLevel - cleansup the symbol table specified for all the */
1595 /* symbols in the given level */
1596 /*------------------------------------------------------------------*/
1598 cleanUpLevel (bucket ** table, int level)
1603 /* go thru the entire table */
1604 for (i = 0; i < 256; i++)
1606 for (chain = table[i]; chain; chain = chain->next)
1608 if (chain->level >= level)
1610 deleteSym (table, chain->sym, chain->name);
1616 /*------------------------------------------------------------------*/
1617 /* computeTypeOr - computes the resultant type from two types */
1618 /*------------------------------------------------------------------*/
1620 computeTypeOr (sym_link * etype1, sym_link * etype2, sym_link * reType)
1623 assert ( (IS_CHAR (etype1) || IS_BIT (etype1))
1624 && (IS_CHAR (etype2) || IS_BIT (etype2)));
1626 if (SPEC_USIGN (etype1) == SPEC_USIGN (etype2))
1628 SPEC_USIGN (reType) = SPEC_USIGN (etype1);
1632 if (SPEC_USIGN (etype1))
1634 if ( IS_LITERAL (etype2)
1635 && floatFromVal (valFromType (etype2)) >= 0)
1636 SPEC_USIGN (reType) = 1;
1639 /* promote to int */
1640 SPEC_USIGN (reType) = 0;
1641 SPEC_NOUN (reType) = V_INT;
1644 else /* etype1 signed */
1646 if ( IS_LITERAL (etype2)
1647 && floatFromVal (valFromType (etype2)) <= 127)
1648 SPEC_USIGN (reType) = 0;
1651 /* promote to int */
1652 SPEC_USIGN (reType) = 0;
1653 SPEC_NOUN (reType) = V_INT;
1657 if (SPEC_USIGN (etype2))
1659 if ( IS_LITERAL (etype1)
1660 && floatFromVal (valFromType (etype1)) >= 0)
1661 SPEC_USIGN (reType) = 1;
1664 /* promote to int */
1665 SPEC_USIGN (reType) = 0;
1666 SPEC_NOUN (reType) = V_INT;
1669 else /* etype2 signed */
1671 if ( IS_LITERAL (etype1)
1672 && floatFromVal (valFromType (etype1)) <= 127)
1673 SPEC_USIGN (reType) = 0;
1676 /* promote to int */
1677 SPEC_USIGN (reType) = 0;
1678 SPEC_NOUN (reType) = V_INT;
1684 /*------------------------------------------------------------------*/
1685 /* computeType - computes the resultant type from two types */
1686 /*------------------------------------------------------------------*/
1688 computeType (sym_link * type1, sym_link * type2,
1689 RESULT_TYPE resultType, int op)
1693 sym_link *etype1 = getSpec (type1);
1696 etype2 = type2 ? getSpec (type2) : type1;
1698 /* if one of them is a float then result is a float */
1699 /* here we assume that the types passed are okay */
1700 /* and can be cast to one another */
1701 /* which ever is greater in size */
1702 if (IS_FLOAT (etype1) || IS_FLOAT (etype2))
1703 rType = newFloatLink ();
1705 /* if both are bitvars choose the larger one */
1706 if (IS_BITVAR (etype1) && IS_BITVAR (etype2))
1708 rType = SPEC_BLEN (etype1) >= SPEC_BLEN (etype2) ?
1709 copyLinkChain (type1) : copyLinkChain (type1);
1711 /* if only one of them is a bit variable
1712 then the other one prevails */
1713 else if (IS_BITVAR (etype1) && !IS_BITVAR (etype2))
1715 rType = copyLinkChain (type2);
1716 /* bitfield can have up to 16 bits */
1717 if (getSize (etype1) > 1)
1718 SPEC_NOUN (getSpec (rType)) = V_INT;
1720 else if (IS_BITVAR (etype2) && !IS_BITVAR (etype1))
1722 rType = copyLinkChain (type1);
1723 /* bitfield can have up to 16 bits */
1724 if (getSize (etype2) > 1)
1725 SPEC_NOUN (getSpec (rType)) = V_INT;
1728 /* if one of them is a pointer or array then that
1730 if (IS_PTR (type1) || IS_ARRAY (type1))
1731 rType = copyLinkChain (type1);
1732 else if (IS_PTR (type2) || IS_ARRAY (type2))
1733 rType = copyLinkChain (type2);
1734 else if (getSize (type1) > getSize (type2))
1735 rType = copyLinkChain (type1);
1737 rType = copyLinkChain (type2);
1739 reType = getSpec (rType);
1741 /* avoid conflicting types */
1742 reType->select.s._signed = 0;
1744 /* if result is a literal then make not so */
1745 if (IS_LITERAL (reType))
1746 SPEC_SCLS (reType) = S_REGISTER;
1750 case RESULT_TYPE_CHAR:
1751 if (IS_BITVAR (reType))
1753 SPEC_NOUN (reType) = V_CHAR;
1754 SPEC_SCLS (reType) = 0;
1755 SPEC_USIGN (reType) = 0;
1759 case RESULT_TYPE_INT:
1760 case RESULT_TYPE_NONE:
1761 case RESULT_TYPE_OTHER:
1762 if (IS_BIT (reType))
1764 SPEC_NOUN (reType) = V_CHAR;
1765 SPEC_SCLS (reType) = 0;
1766 SPEC_USIGN (reType) = 0;
1769 else if (IS_BITFIELD (reType))
1771 /* could be smarter, but it depends on the op */
1772 /* this is for the worst case: a multiplication of 4 * 4 bit */
1773 SPEC_NOUN (reType) = SPEC_BLEN (reType) <= 4 ? V_CHAR : V_INT;
1774 SPEC_SCLS (reType) = 0;
1775 SPEC_USIGN (reType) = 0;
1778 else if (IS_CHAR (reType))
1780 if (op == '|' || op == '^')
1781 return computeTypeOr (etype1, etype2, reType);
1783 && SPEC_USIGN (etype1) != SPEC_USIGN (etype2))
1785 SPEC_USIGN (reType) = 1;
1790 SPEC_NOUN (reType) = V_INT;
1791 SPEC_USIGN (reType) = 0;
1794 /* TODO: should be in SDCCast.c */
1796 && ( !SPEC_USIGN (etype1)
1797 || !SPEC_USIGN (etype2)))
1799 SPEC_NOUN (reType) = V_INT;
1800 SPEC_USIGN (reType) = 0;
1809 /* SDCC's sign promotion:
1810 - if one or both operands are unsigned, the resultant type will be unsigned
1811 (except char, see below)
1812 - if an operand is promoted to a larger type (char -> int, int -> long),
1813 the larger type will be signed
1815 SDCC tries hard to avoid promotion to int and does 8 bit calculation as
1816 much as possible. We're leaving ISO IEC 9899 here and have to extrapolate
1817 the standard. The standard demands, that the result has to be the same
1818 "as if" the promotion would have been performed:
1820 - if the result of an operation with two char's is promoted to a
1821 larger type, the result will be signed.
1823 More sophisticated are these:
1824 - if the result of an operation with two char's is a char again,
1825 the result will only then be unsigned, if both operands are
1826 unsigned. In all other cases the result will be signed.
1828 This seems to be contradictionary to the first two rules, but it makes
1829 real sense (all types are char's):
1831 A signed char can be negative; this must be preserved in the result
1834 Only if both operands are unsigned it's safe to make the result
1835 unsigned; this helps to avoid overflow:
1838 - ToDo: document '|', '^' and '&'
1840 Homework: - why is (200 * 200 < 0) true?
1841 - why is { char l = 200, r = 200; (r * l > 0) } true?
1844 if (!IS_FLOAT (reType)
1845 && ( (SPEC_USIGN (etype1)
1846 /* if this operand is promoted to a larger type,
1847 then it will be promoted to a signed type */
1848 && !(getSize (etype1) < getSize (reType))
1849 /* char require special handling */
1850 && !IS_CHAR (etype1))
1851 || /* same for 2nd operand */
1852 (SPEC_USIGN (etype2)
1853 && !(getSize (etype2) < getSize (reType))
1854 && !IS_CHAR (etype2))
1855 || /* if both are 'unsigned char' and not promoted
1856 let the result be unsigned too */
1857 ( SPEC_USIGN (etype1)
1858 && SPEC_USIGN (etype2)
1861 && IS_CHAR (reType))))
1862 SPEC_USIGN (reType) = 1;
1864 SPEC_USIGN (reType) = 0;
1869 /*--------------------------------------------------------------------*/
1870 /* compareType - will do type check return 1 if match, -1 if castable */
1871 /*--------------------------------------------------------------------*/
1873 compareType (sym_link * dest, sym_link * src)
1884 /* if dest is a declarator then */
1889 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1891 //checkFunction(src,dest);
1893 return compareType (dest->next, src->next);
1895 if (IS_PTR (dest) && IS_GENPTR (src) && IS_VOID(src->next)) {
1898 if (IS_PTR (src) && IS_GENPTR (dest))
1900 if (IS_PTR (dest) && IS_ARRAY (src)) {
1901 value *val=aggregateToPointer (valFromType(src));
1902 int res=compareType (dest, val->type);
1903 Safe_free(val->type);
1907 if (IS_PTR (dest) && IS_FUNC (dest->next) && IS_FUNC (src))
1908 return compareType (dest->next, src);
1911 else if (IS_PTR (dest) && IS_INTEGRAL (src))
1917 /* if one is a specifier and the other is not */
1918 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
1919 (IS_SPEC (dest) && !IS_SPEC (src)))
1922 /* if one of them is a void then ok */
1923 if (SPEC_NOUN (dest) == V_VOID &&
1924 SPEC_NOUN (src) != V_VOID)
1927 if (SPEC_NOUN (dest) != V_VOID &&
1928 SPEC_NOUN (src) == V_VOID)
1931 /* if they are both bitfields then if the lengths
1932 and starts don't match */
1933 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
1934 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
1935 SPEC_BSTR (dest) != SPEC_BSTR (src)))
1938 /* it is a specifier */
1939 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
1941 if (SPEC_USIGN (dest) == SPEC_USIGN (src) &&
1942 IS_INTEGRAL (dest) && IS_INTEGRAL (src) &&
1944 bitsForType (dest) == bitsForType (src))
1945 instead of the next two lines, but the regression tests fail with
1946 them; I guess it's a problem with replaceCheaperOp */
1947 getSize (dest) == getSize (src) &&
1948 !(!IS_BIT (dest) && IS_BIT (src)))
1950 else if (IS_ARITHMETIC (dest) && IS_ARITHMETIC (src))
1955 else if (IS_STRUCT (dest))
1957 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
1962 if (SPEC_LONG (dest) != SPEC_LONG (src))
1965 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
1971 /*--------------------------------------------------------------------*/
1972 /* compareTypeExact - will do type check return 1 if match exactly */
1973 /*--------------------------------------------------------------------*/
1975 compareTypeExact (sym_link * dest, sym_link * src, int level)
1977 STORAGE_CLASS srcScls, destScls;
1988 /* if dest is a declarator then */
1993 if (DCL_TYPE (src) == DCL_TYPE (dest)) {
1994 if ((DCL_TYPE (src) == ARRAY) && (DCL_ELEM (src) != DCL_ELEM (dest)))
1996 if (DCL_PTR_CONST (src) != DCL_PTR_CONST (dest))
1998 if (DCL_PTR_VOLATILE (src) != DCL_PTR_VOLATILE (dest))
2002 value *exargs, *acargs, *checkValue;
2004 /* verify function return type */
2005 if (!compareTypeExact (dest->next, src->next, -1))
2007 if (FUNC_ISISR (dest) != FUNC_ISISR (src))
2009 if (FUNC_REGBANK (dest) != FUNC_REGBANK (src))
2011 if (IFFUNC_ISNAKED (dest) != IFFUNC_ISNAKED (src))
2014 if (IFFUNC_ISREENT (dest) != IFFUNC_ISREENT (src) && argCnt>1)
2018 /* compare expected args with actual args */
2019 exargs = FUNC_ARGS(dest);
2020 acargs = FUNC_ARGS(src);
2022 /* for all the expected args do */
2023 for (; exargs && acargs; exargs = exargs->next, acargs = acargs->next)
2025 //checkTypeSanity(acargs->etype, acargs->name);
2027 if (IS_AGGREGATE (acargs->type))
2029 checkValue = copyValue (acargs);
2030 aggregateToPointer (checkValue);
2033 checkValue = acargs;
2036 if (!compareTypeExact (exargs->type, checkValue->type, -1))
2041 /* if one them ended we have a problem */
2042 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
2043 (!exargs && acargs && !IS_VOID (acargs->type)))
2047 return compareTypeExact (dest->next, src->next, level);
2054 /* if one is a specifier and the other is not */
2055 if ((IS_SPEC (src) && !IS_SPEC (dest)) ||
2056 (IS_SPEC (dest) && !IS_SPEC (src)))
2059 /* if one of them is a void then ok */
2060 if (SPEC_NOUN (dest) != SPEC_NOUN (src))
2063 /* if they are both bitfields then if the lengths
2064 and starts don't match */
2065 if (IS_BITFIELD (dest) && IS_BITFIELD (src) &&
2066 (SPEC_BLEN (dest) != SPEC_BLEN (src) ||
2067 SPEC_BSTR (dest) != SPEC_BSTR (src)))
2070 if (IS_INTEGRAL (dest))
2072 /* signedness must match */
2073 if (SPEC_USIGN (dest) != SPEC_USIGN (src))
2075 /* size must match */
2076 if (SPEC_LONG (dest) != SPEC_LONG (src))
2078 if (SPEC_SHORT (dest) != SPEC_SHORT (src))
2082 if (IS_STRUCT (dest))
2084 if (SPEC_STRUCT (dest) != SPEC_STRUCT (src))
2088 if (SPEC_CONST (dest) != SPEC_CONST (src))
2090 if (SPEC_VOLATILE (dest) != SPEC_VOLATILE (src))
2092 if (SPEC_STAT (dest) != SPEC_STAT (src))
2094 if (SPEC_ABSA (dest) != SPEC_ABSA (src))
2096 if (SPEC_ABSA (dest) && SPEC_ADDR (dest) != SPEC_ADDR (src))
2099 destScls = SPEC_SCLS (dest);
2100 srcScls = SPEC_SCLS (src);
2102 /* Compensate for const to const code change in checkSClass() */
2103 if (!level & port->mem.code_ro && SPEC_CONST (dest))
2105 if (srcScls == S_CODE && destScls == S_FIXED)
2107 if (destScls == S_CODE && srcScls == S_FIXED)
2111 /* compensate for allocGlobal() */
2112 if ((srcScls == S_FIXED || srcScls == S_AUTO)
2113 && port->mem.default_globl_map == xdata
2117 if (level>0 && !SPEC_STAT (dest))
2119 /* Compensate for hack-o-matic in checkSClass() */
2120 if (options.stackAuto || (currFunc && IFFUNC_ISREENT (currFunc->type)))
2122 if (destScls == S_FIXED)
2123 destScls = (options.useXstack ? S_XSTACK : S_STACK);
2124 if (srcScls == S_FIXED)
2125 srcScls = (options.useXstack ? S_XSTACK : S_STACK);
2127 else if (TARGET_IS_DS390 || TARGET_IS_DS400 || options.useXstack)
2129 if (destScls == S_FIXED)
2131 if (srcScls == S_FIXED)
2136 if (srcScls != destScls)
2139 printf ("level = %d\n", level);
2140 printf ("SPEC_SCLS (src) = %d, SPEC_SCLS (dest) = %d\n",
2141 SPEC_SCLS (src), SPEC_SCLS (dest));
2142 printf ("srcScls = %d, destScls = %d\n",srcScls, destScls);
2150 /*------------------------------------------------------------------*/
2151 /* inCalleeSaveList - return 1 if found in callee save list */
2152 /*------------------------------------------------------------------*/
2154 calleeCmp(void *p1, void *p2)
2156 return (strcmp((char *)p1, (char *)(p2)) == 0);
2160 inCalleeSaveList(char *s)
2162 if (options.all_callee_saves)
2164 return isinSetWith(options.calleeSavesSet, s, calleeCmp);
2167 /*-----------------------------------------------------------------*/
2168 /* aggregateToPointer: change an agggregate type function */
2169 /* argument to a pointer to that type. */
2170 /*-----------------------------------------------------------------*/
2172 aggregateToPointer (value * val)
2174 if (IS_AGGREGATE (val->type))
2176 /* if this is a structure */
2177 /* then we need to add a new link */
2178 if (IS_STRUCT (val->type))
2180 /* first lets add DECLARATOR type */
2181 sym_link *p = val->type;
2183 werror (W_STRUCT_AS_ARG, val->name);
2184 val->type = newLink (DECLARATOR);
2185 val->type->next = p;
2188 /* change to a pointer depending on the */
2189 /* storage class specified */
2190 switch (SPEC_SCLS (val->etype))
2193 DCL_TYPE (val->type) = IPOINTER;
2196 DCL_TYPE (val->type) = PPOINTER;
2199 if (SPEC_OCLS(val->etype)) {
2200 DCL_TYPE(val->type)=PTR_TYPE(SPEC_OCLS(val->etype));
2202 // this happens for (external) function parameters
2203 DCL_TYPE (val->type) = port->unqualified_pointer;
2209 DCL_TYPE (val->type) = POINTER;
2212 DCL_TYPE (val->type) = CPOINTER;
2215 DCL_TYPE (val->type) = FPOINTER;
2218 DCL_TYPE (val->type) = EEPPOINTER;
2221 DCL_TYPE (val->type) = port->unqualified_pointer;
2224 /* is there is a symbol associated then */
2225 /* change the type of the symbol as well */
2228 val->sym->type = copyLinkChain (val->type);
2229 val->sym->etype = getSpec (val->sym->type);
2234 /*------------------------------------------------------------------*/
2235 /* checkFunction - does all kinds of check on a function */
2236 /*------------------------------------------------------------------*/
2238 checkFunction (symbol * sym, symbol *csym)
2240 value *exargs, *acargs;
2244 if (getenv("DEBUG_SANITY")) {
2245 fprintf (stderr, "checkFunction: %s ", sym->name);
2248 if (!IS_DECL(sym->type) || DCL_TYPE(sym->type)!=FUNCTION)
2250 werror(E_SYNTAX_ERROR, sym->name);
2254 /* make sure the type is complete and sane */
2255 checkTypeSanity(((symbol *)sym)->etype, ((symbol *)sym)->name);
2257 /* if not type then some kind of error */
2261 /* if the function has no type then make it return int */
2262 if (!sym->type->next)
2263 sym->type->next = sym->etype = newIntLink ();
2265 /* function cannot return aggregate */
2266 if (IS_AGGREGATE (sym->type->next))
2268 werror (E_FUNC_AGGR, sym->name);
2272 /* function cannot return bit */
2273 if (IS_BITVAR (sym->type->next))
2275 werror (E_FUNC_BIT, sym->name);
2279 /* check if this function is defined as calleeSaves
2280 then mark it as such */
2281 FUNC_CALLEESAVES(sym->type) = inCalleeSaveList (sym->name);
2283 /* if interrupt service routine */
2284 /* then it cannot have arguments */
2285 if (IFFUNC_ARGS(sym->type) && FUNC_ISISR (sym->type))
2287 if (!IS_VOID(FUNC_ARGS(sym->type)->type)) {
2288 werror (E_INT_ARGS, sym->name);
2289 FUNC_ARGS(sym->type)=NULL;
2293 for (argCnt=1, acargs = FUNC_ARGS(sym->type);
2295 acargs=acargs->next, argCnt++) {
2297 // this can happen for reentrant functions
2298 werror(E_PARAM_NAME_OMITTED, sym->name, argCnt);
2299 // the show must go on: synthesize a name and symbol
2300 SNPRINTF (acargs->name, sizeof(acargs->name), "_%s_PARM_%d", sym->name, argCnt);
2301 acargs->sym = newSymbol (acargs->name, 1);
2302 SPEC_OCLS (acargs->etype) = istack;
2303 acargs->sym->type = copyLinkChain (acargs->type);
2304 acargs->sym->etype = getSpec (acargs->sym->type);
2305 acargs->sym->_isparm = 1;
2306 strncpyz (acargs->sym->rname, acargs->name, sizeof(acargs->sym->rname));
2307 } else if (strcmp(acargs->sym->name, acargs->sym->rname)==0) {
2309 werror(E_PARAM_NAME_OMITTED, sym->name, argCnt);
2314 if (!csym && !(csym = findSym (SymbolTab, sym, sym->name)))
2315 return 1; /* not defined nothing more to check */
2317 /* check if body already present */
2318 if (csym && IFFUNC_HASBODY(csym->type))
2320 werror (E_FUNC_BODY, sym->name);
2324 /* check the return value type */
2325 if (compareType (csym->type, sym->type) <= 0)
2327 werror (E_PREV_DEF_CONFLICT, csym->name, "type");
2328 printFromToType(csym->type, sym->type);
2332 if (FUNC_ISISR (csym->type) != FUNC_ISISR (sym->type))
2334 werror (E_PREV_DEF_CONFLICT, csym->name, "interrupt");
2337 if (FUNC_REGBANK (csym->type) != FUNC_REGBANK (sym->type))
2339 werror (E_PREV_DEF_CONFLICT, csym->name, "using");
2342 if (IFFUNC_ISNAKED (csym->type) != IFFUNC_ISNAKED (sym->type))
2344 werror (E_PREV_DEF_CONFLICT, csym->name, "_naked");
2347 /* Really, reentrant should match regardless of argCnt, but */
2348 /* this breaks some existing code (the fp lib functions). If */
2349 /* the first argument is always passed the same way, this */
2350 /* lax checking is ok (but may not be true for in future ports) */
2351 if (IFFUNC_ISREENT (csym->type) != IFFUNC_ISREENT (sym->type)
2354 //printf("argCnt = %d\n",argCnt);
2355 werror (E_PREV_DEF_CONFLICT, csym->name, "reentrant");
2358 /* compare expected args with actual args */
2359 exargs = FUNC_ARGS(csym->type);
2360 acargs = FUNC_ARGS(sym->type);
2362 /* for all the expected args do */
2365 exargs = exargs->next, acargs = acargs->next, argCnt++)
2367 if (getenv("DEBUG_SANITY")) {
2368 fprintf (stderr, "checkFunction: %s ", exargs->name);
2370 /* make sure the type is complete and sane */
2371 checkTypeSanity(exargs->etype, exargs->name);
2373 /* If the actual argument is an array, any prototype
2374 * will have modified it to a pointer. Duplicate that
2377 if (IS_AGGREGATE (acargs->type))
2379 checkValue = copyValue (acargs);
2380 aggregateToPointer (checkValue);
2384 checkValue = acargs;
2387 if (compareType (exargs->type, checkValue->type) <= 0)
2389 werror (E_ARG_TYPE, argCnt);
2390 printFromToType(exargs->type, checkValue->type);
2395 /* if one them ended we have a problem */
2396 if ((exargs && !acargs && !IS_VOID (exargs->type)) ||
2397 (!exargs && acargs && !IS_VOID (acargs->type)))
2398 werror (E_ARG_COUNT);
2400 /* replace with this defition */
2401 sym->cdef = csym->cdef;
2402 deleteSym (SymbolTab, csym, csym->name);
2403 deleteFromSeg(csym);
2404 addSym (SymbolTab, sym, sym->name, sym->level, sym->block, 1);
2405 if (IS_EXTERN (csym->etype) && !
2406 IS_EXTERN (sym->etype))
2408 addSet (&publics, sym);
2413 /*------------------------------------------------------------------*/
2414 /* cdbStructBlock - calls struct printing for a blcks */
2415 /*------------------------------------------------------------------*/
2416 void cdbStructBlock (int block)
2419 bucket **table = StructTab;
2422 /* go thru the entire table */
2423 for (i = 0; i < 256; i++)
2425 for (chain = table[i]; chain; chain = chain->next)
2427 if (chain->block >= block)
2430 debugFile->writeType((structdef *)chain->sym, chain->block, 0, NULL);
2436 /*-----------------------------------------------------------------*/
2437 /* processFuncArgs - does some processing with function args */
2438 /*-----------------------------------------------------------------*/
2440 processFuncArgs (symbol * func)
2444 sym_link *funcType=func->type;
2446 if (getenv("SDCC_DEBUG_FUNCTION_POINTERS"))
2447 fprintf (stderr, "SDCCsymt.c:processFuncArgs(%s)\n", func->name);
2449 /* find the function declaration within the type */
2450 while (funcType && !IS_FUNC(funcType))
2451 funcType=funcType->next;
2453 /* if this function has variable argument list */
2454 /* then make the function a reentrant one */
2455 if (IFFUNC_HASVARARGS(funcType) || (options.stackAuto && !func->cdef))
2456 FUNC_ISREENT(funcType)=1;
2458 /* check if this function is defined as calleeSaves
2459 then mark it as such */
2460 FUNC_CALLEESAVES(funcType) = inCalleeSaveList (func->name);
2462 /* loop thru all the arguments */
2463 val = FUNC_ARGS(funcType);
2465 /* if it is void then remove parameters */
2466 if (val && IS_VOID (val->type))
2468 FUNC_ARGS(funcType) = NULL;
2472 /* reset regparm for the port */
2473 (*port->reset_regparms) ();
2474 /* if any of the arguments is an aggregate */
2475 /* change it to pointer to the same type */
2479 /* mark it as a register parameter if
2480 the function does not have VA_ARG
2481 and as port dictates */
2482 if (!IFFUNC_HASVARARGS(funcType) &&
2483 (argreg = (*port->reg_parm) (val->type)))
2485 SPEC_REGPARM (val->etype) = 1;
2486 SPEC_ARGREG(val->etype) = argreg;
2487 } else if (IFFUNC_ISREENT(funcType)) {
2488 FUNC_HASSTACKPARM(funcType) = 1;
2491 if (IS_AGGREGATE (val->type))
2493 aggregateToPointer (val);
2500 /* if this is an internal generated function call */
2502 /* ignore --stack-auto for this one, we don't know how it is compiled */
2503 /* simply trust on --int-long-reent or --float-reent */
2504 if (IFFUNC_ISREENT(funcType)) {
2508 /* if this function is reentrant or */
2509 /* automatics r 2b stacked then nothing */
2510 if (IFFUNC_ISREENT (funcType) || options.stackAuto)
2514 val = FUNC_ARGS(funcType);
2519 /* if a symbolname is not given */
2520 /* synthesize a variable name */
2523 SNPRINTF (val->name, sizeof(val->name),
2524 "_%s_PARM_%d", func->name, pNum++);
2525 val->sym = newSymbol (val->name, 1);
2526 SPEC_OCLS (val->etype) = port->mem.default_local_map;
2527 val->sym->type = copyLinkChain (val->type);
2528 val->sym->etype = getSpec (val->sym->type);
2529 val->sym->_isparm = 1;
2530 strncpyz (val->sym->rname, val->name, sizeof(val->sym->rname));
2532 /* ?? static functions shouldn't imply static parameters - EEP */
2533 if (IS_SPEC(func->etype)) {
2534 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
2535 SPEC_STAT (func->etype);
2538 addSymChain (val->sym);
2541 else /* symbol name given create synth name */
2544 SNPRINTF (val->name, sizeof(val->name), "_%s_PARM_%d", func->name, pNum++);
2545 strncpyz (val->sym->rname, val->name, sizeof(val->sym->rname));
2546 val->sym->_isparm = 1;
2547 SPEC_OCLS (val->etype) = SPEC_OCLS (val->sym->etype) =
2548 (options.model != MODEL_SMALL ? xdata : data);
2551 /* ?? static functions shouldn't imply static parameters - EEP */
2552 if (IS_SPEC(func->etype)) {
2553 SPEC_STAT (val->etype) = SPEC_STAT (val->sym->etype) =
2554 SPEC_STAT (func->etype);
2558 if (!isinSet(operKeyReset, val->sym)) {
2559 addSet (&operKeyReset, val->sym);
2560 applyToSet (operKeyReset, resetParmKey);
2566 /*-----------------------------------------------------------------*/
2567 /* isSymbolEqual - compares two symbols return 1 if they match */
2568 /*-----------------------------------------------------------------*/
2570 isSymbolEqual (symbol * dest, symbol * src)
2572 /* if pointers match then equal */
2576 /* if one of them is null then don't match */
2580 /* if both of them have rname match on rname */
2581 if (dest->rname[0] && src->rname[0])
2582 return (!strcmp (dest->rname, src->rname));
2584 /* otherwise match on name */
2585 return (!strcmp (dest->name, src->name));
2588 void PT(sym_link *type)
2590 printTypeChain(type,0);
2592 /*-----------------------------------------------------------------*/
2593 /* printTypeChain - prints the type chain in human readable form */
2594 /*-----------------------------------------------------------------*/
2596 printTypeChain (sym_link * start, FILE * of)
2600 sym_link * type, * search;
2610 fprintf (of, "void");
2614 /* Print the chain as it is written in the source: */
2615 /* start with the last entry. */
2616 /* However, the storage class at the end of the */
2617 /* chain reall applies to the first in the chain! */
2619 for (type = start; type && type->next; type = type->next)
2622 scls=SPEC_SCLS(type);
2630 case S_DATA: fprintf (of, "data-"); break;
2631 case S_XDATA: fprintf (of, "xdata-"); break;
2632 case S_SFR: fprintf (of, "sfr-"); break;
2633 case S_SBIT: fprintf (of, "sbit-"); break;
2634 case S_CODE: fprintf (of, "code-"); break;
2635 case S_IDATA: fprintf (of, "idata-"); break;
2636 case S_PDATA: fprintf (of, "pdata-"); break;
2637 case S_LITERAL: fprintf (of, "literal-"); break;
2638 case S_STACK: fprintf (of, "stack-"); break;
2639 case S_XSTACK: fprintf (of, "xstack-"); break;
2640 case S_BIT: fprintf (of, "bit-"); break;
2641 case S_EEPROM: fprintf (of, "eeprom-"); break;
2648 if (!IS_FUNC(type)) {
2649 if (DCL_PTR_VOLATILE (type)) {
2650 fprintf (of, "volatile-");
2652 if (DCL_PTR_CONST (type)) {
2653 fprintf (of, "const-");
2656 switch (DCL_TYPE (type))
2659 fprintf (of, "function %s %s",
2660 (IFFUNC_ISBUILTIN(type) ? "__builtin__" : " "),
2661 (IFFUNC_ISJAVANATIVE(type) ? "_JavaNative" : " "));
2663 for (args = FUNC_ARGS(type);
2666 printTypeChain(args->type, of);
2673 fprintf (of, "generic* ");
2676 fprintf (of, "code* ");
2679 fprintf (of, "xdata* ");
2682 fprintf (of, "eeprom* ");
2685 fprintf (of, "near* ");
2688 fprintf (of, "idata* ");
2691 fprintf (of, "pdata* ");
2694 fprintf (of, "unknown* ");
2697 if (DCL_ELEM(type)) {
2698 fprintf (of, "[%d] ", DCL_ELEM(type));
2700 fprintf (of, "[] ");
2707 if (SPEC_VOLATILE (type))
2708 fprintf (of, "volatile-");
2709 if (SPEC_CONST (type))
2710 fprintf (of, "const-");
2711 if (SPEC_USIGN (type))
2712 fprintf (of, "unsigned-");
2713 switch (SPEC_NOUN (type))
2717 fprintf (of, "long-");
2718 fprintf (of, "int");
2722 fprintf (of, "char");
2726 fprintf (of, "void");
2730 fprintf (of, "float");
2734 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2738 fprintf (of, "sbit");
2742 fprintf (of, "bit");
2746 fprintf (of, "bitfield {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2750 fprintf (of, "double");
2754 fprintf (of, "unknown type");
2758 /* search entry in list before "type" */
2759 for (search = start; search && search->next != type;)
2760 search = search->next;
2769 /*--------------------------------------------------------------------*/
2770 /* printTypeChainRaw - prints the type chain in human readable form */
2771 /* in the raw data structure ordering */
2772 /*--------------------------------------------------------------------*/
2774 printTypeChainRaw (sym_link * start, FILE * of)
2787 fprintf (of, "void");
2797 if (!IS_FUNC(type)) {
2798 if (DCL_PTR_VOLATILE (type)) {
2799 fprintf (of, "volatile-");
2801 if (DCL_PTR_CONST (type)) {
2802 fprintf (of, "const-");
2805 switch (DCL_TYPE (type))
2808 fprintf (of, "function %s %s",
2809 (IFFUNC_ISBUILTIN(type) ? "__builtin__" : " "),
2810 (IFFUNC_ISJAVANATIVE(type) ? "_JavaNative" : " "));
2812 for (args = FUNC_ARGS(type);
2815 printTypeChain(args->type, of);
2822 fprintf (of, "generic* ");
2825 fprintf (of, "code* ");
2828 fprintf (of, "xdata* ");
2831 fprintf (of, "eeprom* ");
2834 fprintf (of, "near* ");
2837 fprintf (of, "idata* ");
2840 fprintf (of, "pdata* ");
2843 fprintf (of, "unknown* ");
2846 if (DCL_ELEM(type)) {
2847 fprintf (of, "[%d] ", DCL_ELEM(type));
2849 fprintf (of, "[] ");
2853 if (DCL_TSPEC(type))
2856 printTypeChainRaw(DCL_TSPEC(type), of);
2860 else if (IS_SPEC (type))
2862 switch (SPEC_SCLS (type))
2864 case S_DATA: fprintf (of, "data-"); break;
2865 case S_XDATA: fprintf (of, "xdata-"); break;
2866 case S_SFR: fprintf (of, "sfr-"); break;
2867 case S_SBIT: fprintf (of, "sbit-"); break;
2868 case S_CODE: fprintf (of, "code-"); break;
2869 case S_IDATA: fprintf (of, "idata-"); break;
2870 case S_PDATA: fprintf (of, "pdata-"); break;
2871 case S_LITERAL: fprintf (of, "literal-"); break;
2872 case S_STACK: fprintf (of, "stack-"); break;
2873 case S_XSTACK: fprintf (of, "xstack-"); break;
2874 case S_BIT: fprintf (of, "bit-"); break;
2875 case S_EEPROM: fprintf (of, "eeprom-"); break;
2878 if (SPEC_VOLATILE (type))
2879 fprintf (of, "volatile-");
2880 if (SPEC_CONST (type))
2881 fprintf (of, "const-");
2882 if (SPEC_USIGN (type))
2883 fprintf (of, "unsigned-");
2884 switch (SPEC_NOUN (type))
2888 fprintf (of, "long-");
2889 fprintf (of, "int");
2893 fprintf (of, "char");
2897 fprintf (of, "void");
2901 fprintf (of, "float");
2905 fprintf (of, "struct %s", SPEC_STRUCT (type)->tag);
2909 fprintf (of, "sbit");
2913 fprintf (of, "bit");
2917 fprintf (of, "bitfield {%d,%d}", SPEC_BSTR (type), SPEC_BLEN (type));
2921 fprintf (of, "double");
2925 fprintf (of, "unknown type");
2930 fprintf (of, "NOT_SPEC_OR_DECL");
2940 /*-----------------------------------------------------------------*/
2941 /* powof2 - returns power of two for the number if number is pow 2 */
2942 /*-----------------------------------------------------------------*/
2944 powof2 (TYPE_UDWORD num)
2957 if (n1s > 1 || nshifts == 0)
2973 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2974 symbol *__muldiv[3][3][2];
2975 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
2976 sym_link *__multypes[3][2];
2977 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
2978 symbol *__conv[2][3][2];
2979 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
2980 symbol *__rlrr[2][3][2];
2982 sym_link *floatType;
2985 _mangleFunctionName(char *in)
2987 if (port->getMangledFunctionName)
2989 return port->getMangledFunctionName(in);
2997 /*-----------------------------------------------------------------*/
2998 /* typeFromStr - create a typechain from an encoded string */
2999 /* basic types - 'c' - char */
3005 /* '*' - pointer - default (GPOINTER) */
3006 /* modifiers - 'u' - unsigned */
3007 /* pointer modifiers - 'g' - generic */
3011 /* 'F' - function */
3012 /* examples : "ig*" - generic int * */
3013 /* "cx*" - char xdata * */
3014 /* "ui" - unsigned int */
3015 /*-----------------------------------------------------------------*/
3016 sym_link *typeFromStr (char *s)
3018 sym_link *r = newLink(DECLARATOR);
3030 r->class = SPECIFIER;
3031 SPEC_NOUN(r) = V_CHAR;
3035 r->class = SPECIFIER;
3036 SPEC_NOUN(r) = V_INT;
3039 r->class = SPECIFIER;
3040 SPEC_NOUN(r) = V_INT;
3044 r->class = SPECIFIER;
3045 SPEC_NOUN(r) = V_FLOAT;
3048 r->class = SPECIFIER;
3049 SPEC_NOUN(r) = V_VOID;
3052 DCL_TYPE(r) = port->unqualified_pointer;
3059 assert(*(s+1)=='*');
3060 nr = newLink(DECLARATOR);
3065 DCL_TYPE(r) = GPOINTER;
3068 DCL_TYPE(r) = FPOINTER;
3071 DCL_TYPE(r) = CPOINTER;
3074 DCL_TYPE(r) = POINTER;
3077 DCL_TYPE(r) = FUNCTION;
3078 nr = newLink(DECLARATOR);
3081 DCL_TYPE(r) = CPOINTER;
3087 werror(E_INTERNAL_ERROR, __FILE__, __LINE__,
3088 "typeFromStr: unknown type");
3091 if (IS_SPEC(r) && usign) {
3100 /*-----------------------------------------------------------------*/
3101 /* initCSupport - create functions for C support routines */
3102 /*-----------------------------------------------------------------*/
3106 const char *smuldivmod[] =
3110 const char *sbwd[] =
3112 "char", "int", "long"
3118 const char *srlrr[] =
3123 int bwd, su, muldivmod, tofrom, rlrr;
3125 if (getenv("SDCC_NO_C_SUPPORT")) {
3126 /* for debugging only */
3130 floatType = newFloatLink ();
3132 for (bwd = 0; bwd < 3; bwd++)
3149 __multypes[bwd][0] = l;
3150 __multypes[bwd][1] = copyLinkChain (l);
3151 SPEC_USIGN (__multypes[bwd][1]) = 1;
3154 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
3155 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
3156 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
3157 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
3158 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
3159 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
3160 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
3161 __fslteq = funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
3162 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
3163 __fsgteq = funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
3165 for (tofrom = 0; tofrom < 2; tofrom++)
3167 for (bwd = 0; bwd < 3; bwd++)
3169 for (su = 0; su < 2; su++)
3173 SNPRINTF (buffer, sizeof(buffer), "__fs2%s%s", ssu[su], sbwd[bwd]);
3174 __conv[tofrom][bwd][su] = funcOfType (buffer, __multypes[bwd][su], floatType, 1, options.float_rent);
3178 SNPRINTF (buffer, sizeof(buffer), "__%s%s2fs", ssu[su], sbwd[bwd]);
3179 __conv[tofrom][bwd][su] = funcOfType (buffer, floatType, __multypes[bwd][su], 1, options.float_rent);
3186 for (muldivmod = 0; muldivmod < 3; muldivmod++)
3188 for (bwd = 0; bwd < 3; bwd++)
3190 for (su = 0; su < 2; su++)
3192 SNPRINTF (buffer, sizeof(buffer),
3194 smuldivmod[muldivmod],
3197 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
3198 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
3203 muluint() and mulsint() resp. mululong() and mulslong() return the same result.
3204 Therefore they've been merged into mulint() and mullong().
3207 for (bwd = 0; bwd < 3; bwd++)
3209 for (su = 0; su < 2; su++)
3211 for (muldivmod = 1; muldivmod < 3; muldivmod++)
3214 SNPRINTF (buffer, sizeof(buffer),
3216 smuldivmod[muldivmod],
3219 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
3220 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
3228 for (su = 0; su < 2; su++)
3230 /* muluchar and mulschar are still separate functions, because e.g. the z80
3231 port is sign/zero-extending to int before calling mulint() */
3232 SNPRINTF (buffer, sizeof(buffer),
3234 smuldivmod[muldivmod],
3237 __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
3238 FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1;
3242 /* word and doubleword */
3243 for (bwd = 1; bwd < 3; bwd++)
3246 SNPRINTF (buffer, sizeof(buffer),
3248 smuldivmod[muldivmod],
3250 __muldiv[muldivmod][bwd][0] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
3251 FUNC_NONBANKED (__muldiv[muldivmod][bwd][0]->type) = 1;
3252 /* signed = unsigned */
3253 __muldiv[muldivmod][bwd][1] = __muldiv[muldivmod][bwd][0];
3256 for (rlrr = 0; rlrr < 2; rlrr++)
3258 for (bwd = 0; bwd < 3; bwd++)
3260 for (su = 0; su < 2; su++)
3262 SNPRINTF (buffer, sizeof(buffer),
3267 __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent);
3268 FUNC_NONBANKED (__rlrr[rlrr][bwd][su]->type) = 1;
3274 /*-----------------------------------------------------------------*/
3275 /* initBuiltIns - create prototypes for builtin functions */
3276 /*-----------------------------------------------------------------*/
3282 if (!port->builtintable) return ;
3284 for (i = 0 ; port->builtintable[i].name ; i++) {
3285 sym = funcOfTypeVarg(port->builtintable[i].name,port->builtintable[i].rtype,
3286 port->builtintable[i].nParms,port->builtintable[i].parm_types);
3287 FUNC_ISBUILTIN(sym->type) = 1;
3288 FUNC_ISREENT(sym->type) = 0; /* can never be reentrant */
3292 sym_link *validateLink(sym_link *l,
3299 if (l && l->class==select)
3304 "Internal error: validateLink failed in %s(%s) @ %s:%u:"
3305 " expected %s, got %s\n",
3306 macro, args, file, line,
3307 DECLSPEC2TXT(select), l ? DECLSPEC2TXT(l->class) : "null-link");
3309 return l; // never reached, makes compiler happy.
3312 /*--------------------------------------------------------------------*/
3313 /* newEnumType - create an integer type compatible with enumerations */
3314 /*--------------------------------------------------------------------*/
3316 newEnumType (symbol *enumlist)
3324 type = newLink (SPECIFIER);
3325 SPEC_NOUN (type) = V_INT;
3329 /* Determine the range of the enumerated values */
3331 min = max = (int) floatFromVal (valFromType (sym->type));
3332 for (sym = sym->next; sym; sym = sym->next)
3334 v = (int) floatFromVal (valFromType (sym->type));
3341 /* Determine the smallest integer type that is compatible with this range */
3342 type = newLink (SPECIFIER);
3343 if (min>=0 && max<=255)
3345 SPEC_NOUN (type) = V_CHAR;
3346 SPEC_USIGN (type) = 1;
3348 else if (min>=-128 && max<=127)
3350 SPEC_NOUN (type) = V_CHAR;
3352 else if (min>=0 && max<=65535)
3354 SPEC_NOUN (type) = V_INT;
3355 SPEC_USIGN (type) = 1;
3357 else if (min>=-32768 && max<=32767)
3359 SPEC_NOUN (type) = V_INT;
3363 SPEC_NOUN (type) = V_INT;
3364 SPEC_LONG (type) = 1;
3366 SPEC_USIGN (type) = 1;