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 -------------------------------------------------------------------------*/
26 bucket *SymbolTab [256] ; /* the symbol table */
27 bucket *StructTab [256] ; /* the structure table */
28 bucket *TypedefTab[256] ; /* the typedef table */
29 bucket *LabelTab [256] ; /* the Label table */
30 bucket *enumTab [256] ; /* enumerated table */
32 extern struct set *publics;
34 /*------------------------------------------------------------------*/
35 /* initSymt () - initialises symbol table related stuff */
36 /*------------------------------------------------------------------*/
41 for ( i = 0 ; i < 256 ; i++ )
42 SymbolTab[i] = StructTab[i] = (void *) NULL ;
46 /*-----------------------------------------------------------------*/
47 /* newBucket - allocates & returns a new bucket */
48 /*-----------------------------------------------------------------*/
53 ALLOC(bp,sizeof(bucket));
58 /*-----------------------------------------------------------------*/
59 /* hashKey - computes the hashkey given a symbol name */
60 /*-----------------------------------------------------------------*/
61 int hashKey (const char *s)
63 unsigned long key = 0;
70 /*-----------------------------------------------------------------*/
71 /* addSym - adds a symbol to the hash Table */
72 /*-----------------------------------------------------------------*/
73 void addSym ( bucket **stab ,
79 int i ; /* index into the hash Table */
80 bucket *bp ; /* temp bucket * */
82 /* the symbols are always added at the head of the list */
84 /* get a free entry */
85 ALLOC(bp,sizeof(bucket));
87 bp->sym = sym ; /* update the symbol pointer */
88 bp->level = level; /* update the nest level */
90 strcpy(bp->name,sname); /* copy the name into place */
92 /* if this is the first entry */
93 if (stab[i] == NULL) {
94 bp->prev = bp->next = (void *) NULL ; /* point to nothing */
97 /* not first entry then add @ head of list */
106 /*-----------------------------------------------------------------*/
107 /* deleteSym - deletes a symbol from the hash Table entry */
108 /*-----------------------------------------------------------------*/
109 void deleteSym ( bucket **stab, void *sym, char *sname)
117 /* find the symbol */
119 if (bp->sym == sym) /* found it then break out */
120 break ; /* of the loop */
124 if (!bp) /* did not find it */
126 /* if this is the first one in the chain */
129 if ( stab[i] ) /* if chain ! empty */
130 stab[i]->prev = (void *) NULL ;
132 /* middle || end of chain */
134 if ( bp->next ) /* if not end of chain */
135 bp->next->prev = bp->prev ;
137 bp->prev->next = bp->next ;
142 /*-----------------------------------------------------------------*/
143 /* findSym - finds a symbol in a table */
144 /*-----------------------------------------------------------------*/
145 void *findSym ( bucket **stab, void *sym, const char *sname)
149 bp = stab[hashKey(sname)] ;
152 if ( bp->sym == sym || strcmp (bp->name,sname) == 0 )
157 return ( bp ? bp->sym : (void *) NULL ) ;
160 /*-----------------------------------------------------------------*/
161 /* findSymWithLevel - finds a symbol with a name & level */
162 /*-----------------------------------------------------------------*/
163 void *findSymWithLevel ( bucket **stab, symbol *sym)
167 bp = stab[hashKey(sym->name)];
170 ** do the search from the head of the list since the
171 ** elements are added at the head it is ensured that
172 ** we will find the deeper definitions before we find
173 ** the global ones. we need to check for symbols with
174 ** level <= to the level given, if levels match then block
175 ** numbers need to match as well
179 if ( strcmp(bp->name,sym->name) == 0 && bp->level <= sym->level) {
180 /* if this is parameter then nothing else need to be checked */
181 if (((symbol *)(bp->sym))->_isparm)
183 /* if levels match then block numbers hsould also match */
184 if (bp->level && bp->level == sym->level && bp->block == sym->block )
186 /* if levels don't match then we are okay */
187 if (bp->level && bp->level != sym->level)
189 /* if this is a global variable then we are ok too */
197 return (void *) NULL ;
200 /*-----------------------------------------------------------------*/
201 /* findSymWithBlock - finds a symbol with name in with a block */
202 /*-----------------------------------------------------------------*/
203 void *findSymWithBlock ( bucket **stab, symbol *sym, int block)
207 bp = stab[hashKey(sym->name)] ;
210 if ( strcmp (bp->name,sym->name) == 0 &&
216 return ( bp ? bp->sym : (void *) NULL ) ;
219 /*------------------------------------------------------------------*/
220 /* newSymbol () - returns a new pointer to a symbol */
221 /*------------------------------------------------------------------*/
222 symbol *newSymbol (char *name, int scope )
226 ALLOC(sym,sizeof(symbol));
228 strcpy(sym->name,name); /* copy the name */
229 sym->level = scope ; /* set the level */
230 sym->block = currBlockno ;
231 sym->lineDef = yylineno ; /* set the line number */
235 /*------------------------------------------------------------------*/
236 /* newLink - creates a new link (declarator,specifier) */
237 /*------------------------------------------------------------------*/
242 ALLOC(p,sizeof(link));
247 /*------------------------------------------------------------------*/
248 /* newStruct - creats a new structdef from the free list */
249 /*------------------------------------------------------------------*/
250 structdef *newStruct ( char *tag )
254 ALLOC(s,sizeof(structdef));
256 strcpy(s->tag,tag) ; /* copy the tag */
260 /*------------------------------------------------------------------*/
261 /* pointerTypes - do the computation for the pointer types */
262 /*------------------------------------------------------------------*/
263 void pointerTypes (link *ptr, link *type)
268 /* find the first pointer type */
269 while (ptr && !IS_PTR(ptr))
272 /* could not find it */
273 if (!ptr || IS_SPEC(ptr) ||
274 DCL_TYPE(ptr) != UPOINTER)
277 /* change the pointer type depending on the
278 storage class of the type */
280 DCL_PTR_CONST(ptr) = SPEC_CONST(type);
281 DCL_PTR_VOLATILE(ptr) = SPEC_VOLATILE(type);
282 switch (SPEC_SCLS(type)) {
284 DCL_TYPE(ptr) = FPOINTER;
287 DCL_TYPE(ptr) = IPOINTER ;
290 DCL_TYPE(ptr) = PPOINTER ;
293 DCL_TYPE(ptr) = POINTER ;
296 DCL_PTR_CONST(ptr) = port->mem.code_ro;
297 DCL_TYPE(ptr) = CPOINTER ;
300 DCL_TYPE(ptr) = EEPPOINTER;
303 DCL_TYPE(ptr) = GPOINTER;
306 /* the storage class of type ends here */
309 SPEC_VOLATILE(type) = 0;
312 /* now change all the remaining unknown pointers
313 to generic pointers */
315 if (!IS_SPEC(ptr) && DCL_TYPE(ptr) == UPOINTER)
316 DCL_TYPE(ptr) = GPOINTER;
320 /* same for the type although it is highly unlikely that
321 type will have a pointer */
323 if (!IS_SPEC(type) && DCL_TYPE(type) == UPOINTER)
324 DCL_TYPE(type) = GPOINTER;
330 /*------------------------------------------------------------------*/
331 /* addDecl - adds a declarator @ the end of a chain */
332 /*------------------------------------------------------------------*/
333 void addDecl ( symbol *sym, int type , link *p )
339 /* if we are passed a link then set head & tail */
346 head = tail = newLink() ;
347 DCL_TYPE(head) = type ;
350 /* if this is the first entry */
356 if ( IS_SPEC(sym->etype) && IS_SPEC(head) && head == tail ) {
357 sym->etype = mergeSpec(sym->etype,head);
360 if ( IS_SPEC(sym->etype) && !IS_SPEC(head) && head == tail ) {
362 while (t->next != sym->etype) t = t->next ;
364 tail->next = sym->etype;
366 sym->etype->next = head;
372 /* if the type is a unknown pointer and has
373 a tspec then take the storage class const & volatile
374 attribute from the tspec & make it those of this
378 DCL_TYPE(p) == UPOINTER &&
380 if (!IS_SPEC(sym->etype)) {
381 sym->etype = sym->etype->next = newLink();
382 sym->etype->class = SPECIFIER;
384 SPEC_SCLS(sym->etype) = SPEC_SCLS(DCL_TSPEC(p));
385 SPEC_CONST(sym->etype) = SPEC_CONST(DCL_TSPEC(p));
386 SPEC_VOLATILE(sym->etype) = SPEC_VOLATILE(DCL_TSPEC(p));
392 /*------------------------------------------------------------------*/
393 /* mergeSpec - merges two specifiers and returns the new one */
394 /*------------------------------------------------------------------*/
395 link *mergeSpec ( link *dest, link *src )
397 /* if noun different then src overrides */
398 if ( SPEC_NOUN(dest) != SPEC_NOUN(src) && !SPEC_NOUN(dest))
399 SPEC_NOUN(dest) = SPEC_NOUN(src) ;
401 if (! SPEC_SCLS(dest)) /* if destination has no storage class */
402 SPEC_SCLS(dest) = SPEC_SCLS(src) ;
404 /* copy all the specifications */
405 SPEC_LONG(dest) |= SPEC_LONG(src);
406 SPEC_SHORT(dest) |= SPEC_SHORT(src);
407 SPEC_USIGN(dest) |= SPEC_USIGN(src);
408 SPEC_STAT(dest) |= SPEC_STAT(src);
409 SPEC_EXTR(dest) |= SPEC_EXTR(src);
410 SPEC_ABSA(dest) |= SPEC_ABSA(src);
411 SPEC_RENT(dest) |= SPEC_RENT(src);
412 SPEC_INTN(dest) |= SPEC_INTN(src);
413 SPEC_BANK(dest) |= SPEC_BANK(src);
414 SPEC_VOLATILE(dest) |= SPEC_VOLATILE(src);
415 SPEC_CRTCL(dest) |= SPEC_CRTCL(src);
416 SPEC_ADDR(dest) |= SPEC_ADDR(src);
417 SPEC_OCLS(dest) = SPEC_OCLS(src);
418 SPEC_BLEN(dest) |= SPEC_BLEN(src);
419 SPEC_BSTR(dest) |= SPEC_BSTR(src);
420 SPEC_TYPEDEF(dest) |= SPEC_TYPEDEF(src);
421 SPEC_NONBANKED(dest) |= SPEC_NONBANKED(src);
423 if ( IS_STRUCT(dest) && SPEC_STRUCT(dest) == NULL )
424 SPEC_STRUCT(dest) = SPEC_STRUCT(src);
429 /*------------------------------------------------------------------*/
430 /* cloneSpec - copies the entire spec and returns a new spec */
431 /*------------------------------------------------------------------*/
432 link *cloneSpec ( link *src )
436 /* go thru chain till we find the specifier */
437 while ( src && src->class != SPECIFIER )
441 memcpy (spec,src,sizeof(link));
445 /*------------------------------------------------------------------*/
446 /* genSymName - generates and returns a name used for anonymous vars*/
447 /*------------------------------------------------------------------*/
448 char *genSymName ( int level )
450 static int gCount = 0 ;
451 static char gname[SDCC_NAME_MAX+1] ;
453 sprintf (gname,"__%04d%04d",level,gCount++);
457 /*------------------------------------------------------------------*/
458 /* getSpec - returns the specifier part from a declaration chain */
459 /*------------------------------------------------------------------*/
460 link *getSpec ( link *p )
465 while ( p && ! (IS_SPEC(p)))
471 /*------------------------------------------------------------------*/
472 /* newCharLink() - creates an int type */
473 /*------------------------------------------------------------------*/
479 p->class = SPECIFIER ;
480 SPEC_NOUN(p) = V_CHAR ;
485 /*------------------------------------------------------------------*/
486 /* newFloatLink - a new Float type */
487 /*------------------------------------------------------------------*/
493 p->class = SPECIFIER ;
494 SPEC_NOUN(p) = V_FLOAT ;
499 /*------------------------------------------------------------------*/
500 /* newLongLink() - new long type */
501 /*------------------------------------------------------------------*/
507 p->class = SPECIFIER ;
508 SPEC_NOUN(p) = V_INT ;
514 /*------------------------------------------------------------------*/
515 /* newIntLink() - creates an int type */
516 /*------------------------------------------------------------------*/
522 p->class = SPECIFIER ;
523 SPEC_NOUN(p) = V_INT ;
528 /*------------------------------------------------------------------*/
529 /* getSize - returns size of a type chain in bits */
530 /*------------------------------------------------------------------*/
531 unsigned int getSize ( link *p )
533 /* if nothing return 0 */
536 if ( IS_SPEC(p) ) { /* if this is the specifier then */
537 switch (SPEC_NOUN(p)) { /* depending on the specifier type */
539 return (IS_LONG(p) ? LONGSIZE : ( IS_SHORT(p) ? SHORTSIZE: INTSIZE)) ;
547 return SPEC_STRUCT(p)->size ;
553 return ((SPEC_BLEN(p) / 8) + (SPEC_BLEN(p) % 8 ? 1 : 0)) ;
559 /* this is a specifier */
560 switch (DCL_TYPE(p)) {
564 return DCL_ELEM(p) * getSize (p->next) ;
581 /*------------------------------------------------------------------*/
582 /* bitsForType - returns # of bits required to store this type */
583 /*------------------------------------------------------------------*/
584 unsigned int bitsForType ( link *p )
586 /* if nothing return 0 */
590 if ( IS_SPEC(p) ) { /* if this is the specifier then */
592 switch (SPEC_NOUN(p)) { /* depending on the specifier type */
594 return (IS_LONG(p) ? LONGSIZE*8 : ( IS_SHORT(p) ? SHORTSIZE*8: INTSIZE*8)) ;
602 return SPEC_STRUCT(p)->size*8 ;
614 /* this is a specifier */
615 switch (DCL_TYPE(p)) {
619 return DCL_ELEM(p) * getSize (p->next) *8 ;
623 return ( PTRSIZE * 8) ;
627 return ( FPTRSIZE * 8);
629 return ( GPTRSIZE * 8);
636 /*------------------------------------------------------------------*/
637 /* copySymbolChain - copies a symbol chain */
638 /*------------------------------------------------------------------*/
639 symbol *copySymbolChain (symbol *src)
646 dest = copySymbol(src);
647 dest->next = copySymbolChain(src->next);
651 /*------------------------------------------------------------------*/
652 /* copySymbol - makes a copy of a symbol */
653 /*------------------------------------------------------------------*/
654 symbol *copySymbol (symbol *src)
661 dest = newSymbol( src->name, src->level );
662 memcpy(dest,src,sizeof(symbol));
663 dest->level = src->level ;
664 dest->block = src->block ;
665 dest->ival = copyIlist(src->ival);
666 dest->type = copyLinkChain(src->type);
667 dest->etype= getSpec(dest->type);
669 dest->args = copyValueChain (src->args);
670 dest->key = src->key;
671 dest->calleeSave = src->calleeSave;
672 dest->allocreq = src->allocreq;
676 /*------------------------------------------------------------------*/
677 /* reverseSyms - reverses the links for a symbol chain */
678 /*------------------------------------------------------------------*/
679 symbol *reverseSyms ( symbol *sym)
681 symbol *prev , *curr, *next ;
696 sym->next = (void *) NULL ;
700 /*------------------------------------------------------------------*/
701 /* reverseLink - reverses the links for a type chain */
702 /*------------------------------------------------------------------*/
703 link *reverseLink ( link *type)
705 link *prev , *curr, *next ;
720 type->next = (void *) NULL ;
724 /*------------------------------------------------------------------*/
725 /* addSymChain - adds a symbol chain to the symboltable */
726 /*------------------------------------------------------------------*/
727 void addSymChain ( symbol *symHead )
729 symbol *sym = symHead ;
730 symbol *csym = NULL ;
732 for (;sym != NULL ; sym = sym->next ) {
734 /* if already exists in the symbol table then check if
735 the previous was an extern definition if yes then
736 then check if the type match, if the types match then
737 delete the current entry and add the new entry */
738 if ((csym = findSymWithLevel (SymbolTab,sym)) &&
739 csym->level == sym->level) {
741 /* previous definition extern ? */
742 if ( IS_EXTERN(csym->etype) ) {
743 /* do types match ? */
744 if (checkType ( csym->type,sym->type) != 1)
746 werror (E_DUPLICATE,csym->name);
748 /* delete current entry */
749 deleteSym (SymbolTab, csym, csym->name );
751 addSym (SymbolTab, sym, sym->name, sym->level,sym->block);
752 } else /* not extern */
753 werror(E_DUPLICATE,sym->name) ;
757 /* check if previously defined */
758 if (csym && csym->level == sym->level ) {
759 /* if the previous one was declared as extern */
760 /* then check the type with the current one */
761 if ( IS_EXTERN(csym->etype) ) {
762 if ( checkType (csym->type, sym->type ) <= 0 )
763 werror (W_EXTERN_MISMATCH,csym->name);
767 addSym (SymbolTab,sym,sym->name,sym->level,sym->block) ;
772 /*------------------------------------------------------------------*/
773 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
774 /*------------------------------------------------------------------*/
775 int funcInChain (link *lnk)
785 /*------------------------------------------------------------------*/
786 /* structElemType - returns the type info of a sturct member */
787 /*------------------------------------------------------------------*/
788 link *structElemType (link *stype, value *id ,value **argsp)
790 symbol *fields = (SPEC_STRUCT(stype) ? SPEC_STRUCT(stype)->fields : NULL);
792 if ( ! fields || ! id)
795 /* look for the id */
797 if (strcmp(fields->rname,id->name) == 0) {
799 *argsp = fields->args;
801 return copyLinkChain (fields->type) ;
803 fields = fields->next ;
805 werror(E_NOT_MEMBER,id->name);
810 /*------------------------------------------------------------------*/
811 /* getStructElement - returns element of a tructure definition */
812 /*------------------------------------------------------------------*/
813 symbol *getStructElement ( structdef *sdef, symbol *sym)
817 for ( field = sdef->fields ; field ; field = field->next )
818 if ( strcmp(field->name,sym->name) == 0)
821 werror(E_NOT_MEMBER,sym->name);
823 return sdef->fields ;
826 /*------------------------------------------------------------------*/
827 /* compStructSize - computes the size of a structure */
828 /*------------------------------------------------------------------*/
829 int compStructSize (int su, structdef *sdef )
831 int sum = 0 , usum =0;
835 /* for the identifiers */
836 loop = sdef->fields ;
839 /* create the internal name for this variable */
840 sprintf (loop->rname,"_%s",loop->name);
841 loop->offset = ( su == UNION ? sum = 0 : sum ) ;
842 SPEC_VOLATILE(loop->etype) |= (su == UNION ? 1 : 0);
844 /* if this is a bit field */
847 /* change it to a unsigned bit */
848 SPEC_NOUN(loop->etype) = V_BIT ;
849 SPEC_USIGN(loop->etype) = 1 ;
850 /* check if this fit into the remaining */
851 /* bits of this byte else align it to the */
852 /* next byte boundary */
853 if ((SPEC_BLEN(loop->etype)=loop->bitVar) <= (8 - bitOffset)) {
854 SPEC_BSTR(loop->etype) = bitOffset ;
855 sum += (loop->bitVar / 8) ;
856 bitOffset += (loop->bitVar % 8);
858 else /* does not fit */
861 loop->offset++; /* go to the next byte */
863 SPEC_BSTR(loop->etype) = bitOffset ;
864 sum += (loop->bitVar / 8) ;
865 bitOffset += (loop->bitVar % 8);
867 /* if this is the last field then pad */
868 if (!loop->next && bitOffset) {
875 sum += getSize (loop->type) ;
878 /* if function then do the arguments for it */
879 if (funcInChain(loop->type)) {
880 processFuncArgs (loop, 1);
885 /* if this is not a bitfield but the */
886 /* previous one was and did not take */
887 /* the whole byte then pad the rest */
888 if ((loop && !loop->bitVar) && bitOffset) {
893 /* if union then size = sizeof larget field */
895 usum = max(usum,sum);
899 return (su == UNION ? usum : sum);
902 /*------------------------------------------------------------------*/
903 /* checkSClass - check the storage class specification */
904 /*------------------------------------------------------------------*/
905 static void checkSClass ( symbol *sym )
907 /* type is literal can happen foe enums change
909 if (SPEC_SCLS(sym->etype) == S_LITERAL && !SPEC_ENUM(sym->etype))
910 SPEC_SCLS(sym->etype) = S_AUTO;
912 /* if sfr or sbit then must also be */
913 /* volatile the initial value will be xlated */
914 /* to an absolute address */
915 if (SPEC_SCLS(sym->etype) == S_SBIT ||
916 SPEC_SCLS(sym->etype) == S_SFR ) {
917 SPEC_VOLATILE(sym->etype) = 1;
918 /* if initial value given */
920 SPEC_ABSA(sym->etype) = 1;
921 SPEC_ADDR(sym->etype) =
922 (int) list2int(sym->ival);
927 /* if absolute address given then it mark it as
929 if (IS_ABSOLUTE(sym->etype))
930 SPEC_VOLATILE(sym->etype) = 1;
932 /* global variables declared const put into code */
933 if (sym->level == 0 &&
934 SPEC_SCLS(sym->etype) == S_CONSTANT) {
935 SPEC_SCLS(sym->etype) = S_CODE ;
936 SPEC_CONST(sym->etype) = 1;
939 /* global variable in code space is a constant */
940 if (sym->level == 0 &&
941 SPEC_SCLS(sym->etype) == S_CODE &&
943 SPEC_CONST(sym->etype) = 1;
946 /* if bit variable then no storage class can be */
947 /* specified since bit is already a storage */
948 if ( IS_BITVAR(sym->etype) &&
949 ( SPEC_SCLS(sym->etype) != S_FIXED &&
950 SPEC_SCLS(sym->etype) != S_SBIT &&
951 SPEC_SCLS(sym->etype) != S_BIT )
953 werror (E_BITVAR_STORAGE,sym->name);
954 SPEC_SCLS(sym->etype) = S_FIXED ;
957 /* extern variables cannot be initialized */
958 if (IS_EXTERN(sym->etype) && sym->ival) {
959 werror(E_EXTERN_INIT,sym->name);
963 /* if this is an automatic symbol then */
964 /* storage class will be ignored and */
965 /* symbol will be allocated on stack/ */
966 /* data depending on flag */
968 (options.stackAuto || reentrant ) &&
969 ( SPEC_SCLS(sym->etype) != S_AUTO &&
970 SPEC_SCLS(sym->etype) != S_FIXED &&
971 SPEC_SCLS(sym->etype) != S_REGISTER &&
972 SPEC_SCLS(sym->etype) != S_STACK &&
973 SPEC_SCLS(sym->etype) != S_XSTACK &&
974 SPEC_SCLS(sym->etype) != S_CONSTANT )) {
976 werror(E_AUTO_ASSUMED,sym->name) ;
977 SPEC_SCLS(sym->etype) = S_AUTO ;
980 /* automatic symbols cannot be given */
981 /* an absolute address ignore it */
983 SPEC_ABSA(sym->etype) &&
984 (options.stackAuto || reentrant) ) {
985 werror(E_AUTO_ABSA,sym->name);
986 SPEC_ABSA(sym->etype) = 0 ;
989 /* arrays & pointers cannot be defined for bits */
990 /* SBITS or SFRs or BIT */
991 if ((IS_ARRAY(sym->type) || IS_PTR(sym->type)) &&
992 ( SPEC_NOUN(sym->etype) == V_BIT ||
993 SPEC_NOUN(sym->etype) == V_SBIT ||
994 SPEC_SCLS(sym->etype) == S_SFR ))
995 werror(E_BIT_ARRAY,sym->name);
997 /* if this is a bit|sbit then set length & start */
998 if (SPEC_NOUN(sym->etype) == V_BIT ||
999 SPEC_NOUN(sym->etype) == V_SBIT ) {
1000 SPEC_BLEN(sym->etype) = 1 ;
1001 SPEC_BSTR(sym->etype) = 0 ;
1004 /* variables declared in CODE space must have */
1005 /* initializers if not an extern */
1006 if (SPEC_SCLS(sym->etype) == S_CODE &&
1007 sym->ival == NULL &&
1009 port->mem.code_ro &&
1010 !IS_EXTERN(sym->etype))
1011 werror(E_CODE_NO_INIT,sym->name);
1013 /* if parameter or local variable then change */
1014 /* the storage class to reflect where the var will go */
1015 if ( sym->level && SPEC_SCLS(sym->etype) == S_FIXED) {
1016 if ( options.stackAuto || (currFunc && IS_RENT(currFunc->etype)))
1018 SPEC_SCLS(sym->etype) = (options.useXstack ?
1019 S_XSTACK : S_STACK ) ;
1023 /* hack-o-matic! I see no reason why the useXstack option should ever
1024 * control this allcoation, but the code was originally that way, and
1025 * changing it for non-390 ports breaks the compiler badly.
1027 bool useXdata = IS_DS390_PORT ? options.model : options.useXstack;
1028 SPEC_SCLS(sym->etype) = (useXdata ?
1029 S_XDATA : S_FIXED ) ;
1034 /*------------------------------------------------------------------*/
1035 /* changePointer - change pointer to functions */
1036 /*------------------------------------------------------------------*/
1037 void changePointer (symbol *sym)
1041 /* go thru the chain of declarations */
1042 /* if we find a pointer to a function */
1043 /* unconditionally change it to a ptr */
1045 for ( p = sym->type ; p ; p = p->next) {
1046 if ( !IS_SPEC(p) && DCL_TYPE(p) == UPOINTER)
1047 DCL_TYPE(p) = GPOINTER ;
1048 if ( IS_PTR(p) && IS_FUNC(p->next))
1049 DCL_TYPE(p) = CPOINTER ;
1053 /*------------------------------------------------------------------*/
1054 /* checkDecl - does semantic validation of a declaration */
1055 /*------------------------------------------------------------------*/
1056 int checkDecl ( symbol *sym )
1059 checkSClass (sym); /* check the storage class */
1060 changePointer(sym); /* change pointers if required */
1062 /* if this is an array without any dimension
1063 then update the dimension from the initial value */
1064 if (IS_ARRAY(sym->type) && !DCL_ELEM(sym->type))
1065 DCL_ELEM(sym->type) = getNelements (sym->type,sym->ival);
1070 /*------------------------------------------------------------------*/
1071 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1072 /*------------------------------------------------------------------*/
1073 link *copyLinkChain ( link *p)
1075 link *head, *curr , *loop;
1078 head = loop = ( curr ? newLink() : (void *) NULL) ;
1080 memcpy(loop,curr,sizeof(link)) ; /* copy it */
1081 loop->next = (curr->next ? newLink() : (void *) NULL) ;
1090 /*------------------------------------------------------------------*/
1091 /* cleanUpBlock - cleansup the symbol table specified for all the */
1092 /* symbols in the given block */
1093 /*------------------------------------------------------------------*/
1094 void cleanUpBlock ( bucket **table, int block)
1099 /* go thru the entire table */
1100 for ( i = 0 ; i < 256; i++ ) {
1101 for ( chain = table[i]; chain ; chain = chain->next ) {
1102 if (chain->block >= block) {
1103 deleteSym (table,chain->sym,chain->name);
1109 /*------------------------------------------------------------------*/
1110 /* cleanUpLevel - cleansup the symbol table specified for all the */
1111 /* symbols in the given level */
1112 /*------------------------------------------------------------------*/
1113 void cleanUpLevel (bucket **table, int level )
1118 /* go thru the entire table */
1119 for ( i = 0 ; i < 256; i++ ) {
1120 for ( chain = table[i]; chain ; chain = chain->next ) {
1121 if (chain->level >= level) {
1122 deleteSym (table,chain->sym,chain->name);
1128 /*------------------------------------------------------------------*/
1129 /* computeType - computes the resultant type from two types */
1130 /*------------------------------------------------------------------*/
1131 link *computeType ( link *type1, link *type2)
1135 link *etype1 = getSpec(type1);
1136 link *etype2 = getSpec(type2);
1138 /* if one of them is a float then result is a float */
1139 /* here we assume that the types passed are okay */
1140 /* and can be cast to one another */
1141 /* which ever is greater in size */
1142 if (IS_FLOAT(etype1) || IS_FLOAT(etype2))
1143 rType = newFloatLink();
1145 /* if only one of them is a bit variable
1146 then the other one prevails */
1147 if (IS_BITVAR(etype1) && !IS_BITVAR(etype2))
1148 rType = copyLinkChain(type2);
1150 if (IS_BITVAR(etype2) && !IS_BITVAR(etype1))
1151 rType = copyLinkChain(type1);
1153 /* if one of them is a pointer then that
1156 rType = copyLinkChain(type1);
1159 rType = copyLinkChain(type2);
1161 if (getSize (type1) > getSize(type2) )
1162 rType = copyLinkChain(type1);
1164 rType = copyLinkChain(type2);
1166 reType = getSpec(rType);
1168 /* if either of them unsigned then make this unsigned */
1169 if ((SPEC_USIGN(etype1) || SPEC_USIGN(etype2)) && !IS_FLOAT(reType))
1170 SPEC_USIGN(reType) = 1;
1172 /* if result is a literal then make not so */
1173 if (IS_LITERAL(reType))
1174 SPEC_SCLS(reType) = S_REGISTER ;
1179 /*------------------------------------------------------------------*/
1180 /* checkType - will do type check return 1 if match */
1181 /*------------------------------------------------------------------*/
1182 int checkType ( link *dest, link *src )
1193 /* if dest is a declarator then */
1194 if (IS_DECL(dest)) {
1196 if (DCL_TYPE(src) == DCL_TYPE(dest))
1197 return checkType(dest->next,src->next);
1199 if (IS_PTR(src) && IS_PTR(dest))
1202 if (IS_PTR(dest) && IS_ARRAY(src))
1205 if (IS_PTR(dest) && IS_FUNC(dest->next) && IS_FUNC(src))
1206 return -1 * checkType (dest->next,src) ;
1211 if (IS_PTR(dest) && IS_INTEGRAL(src))
1217 /* if one of them is a void then ok */
1218 if (SPEC_NOUN(dest) == V_VOID &&
1219 SPEC_NOUN(src) != V_VOID )
1222 if (SPEC_NOUN(dest) != V_VOID &&
1223 SPEC_NOUN(src) == V_VOID )
1226 /* char === to short */
1227 if (SPEC_NOUN(dest) == V_CHAR &&
1228 SPEC_NOUN(src) == V_INT &&
1230 return (SPEC_USIGN(src) == SPEC_USIGN(dest) ? 1 : -2);
1232 if (SPEC_NOUN(src) == V_CHAR &&
1233 SPEC_NOUN(dest) == V_INT &&
1235 return (SPEC_USIGN(src) == SPEC_USIGN(dest) ? 1 : -2);
1237 /* if they are both bitfields then if the lengths
1238 and starts don't match */
1239 if (IS_BITFIELD(dest) && IS_BITFIELD(src) &&
1240 (SPEC_BLEN(dest) != SPEC_BLEN(src) ||
1241 SPEC_BSTR(dest) != SPEC_BSTR(src)))
1244 /* it is a specifier */
1245 if (SPEC_NOUN(dest) != SPEC_NOUN(src)) {
1246 if (SPEC_USIGN(dest) == SPEC_USIGN(src) &&
1247 IS_INTEGRAL(dest) && IS_INTEGRAL(src) &&
1248 getSize(dest) == getSize(src))
1251 if (IS_ARITHMETIC(dest) && IS_ARITHMETIC(src))
1257 if (IS_STRUCT(dest)) {
1258 if (SPEC_STRUCT(dest) != SPEC_STRUCT(src))
1263 if (SPEC_LONG(dest) != SPEC_LONG(src))
1266 if (SPEC_SHORT(dest) != SPEC_SHORT(src))
1269 if (SPEC_USIGN(dest) != SPEC_USIGN(src))
1275 /*------------------------------------------------------------------*/
1276 /* inCalleeSaveList - return 1 if found in calle save list */
1277 /*------------------------------------------------------------------*/
1278 bool inCalleeSaveList ( char *s)
1282 for (i = 0 ; options.calleeSaves[i] ; i++ )
1283 if (strcmp(options.calleeSaves[i],s) == 0)
1289 /*------------------------------------------------------------------*/
1290 /* checkFunction - does all kinds of check on a function */
1291 /*------------------------------------------------------------------*/
1292 int checkFunction (symbol *sym)
1295 value *exargs, *acargs ;
1298 /* if not type then some kind of error */
1302 /* if the function has no type then make it return int */
1303 if ( !sym->type->next )
1304 sym->type->next = sym->etype = newIntLink();
1306 /* function cannot return aggregate */
1307 if (IS_AGGREGATE(sym->type->next)) {
1308 werror(E_FUNC_AGGR,sym->name);
1312 /* function cannot return bit */
1313 if (IS_BITVAR(sym->type->next)) {
1314 werror(E_FUNC_BIT,sym->name);
1318 /* check if this function is defined as calleeSaves
1319 then mark it as such */
1320 sym->calleeSave = inCalleeSaveList(sym->name);
1322 /* if interrupt service routine */
1323 /* then it cannot have arguments */
1324 if ( sym->args && IS_ISR(sym->etype) && !IS_VOID(sym->args->type)) {
1325 werror(E_INT_ARGS,sym->name);
1329 if (!(csym = findSym (SymbolTab, sym, sym->name )))
1330 return 1 ; /* not defined nothing more to check */
1332 /* check if body already present */
1333 if ( csym && csym->fbody ) {
1334 werror(E_FUNC_BODY,sym->name);
1338 /* check the return value type */
1339 if (checkType (csym->type,sym->type) <= 0) {
1340 werror(E_PREV_DEF_CONFLICT,csym->name,"type") ;
1341 werror (E_CONTINUE,"previous defintion type ");
1342 printTypeChain(csym->type,stderr);fprintf(stderr,"\n");
1343 werror (E_CONTINUE,"current definition type ");
1344 printTypeChain(sym->type,stderr);fprintf(stderr,"\n");
1348 if ( SPEC_INTRTN(csym->etype) != SPEC_INTRTN(sym->etype)) {
1349 werror (E_PREV_DEF_CONFLICT,csym->name,"interrupt");
1353 if (SPEC_BANK(csym->etype) != SPEC_BANK(sym->etype)) {
1354 werror (E_PREV_DEF_CONFLICT,csym->name,"using");
1358 /* compare expected agrs with actual args */
1359 exargs = csym->args ;
1360 acargs = sym->args ;
1362 /* for all the expected args do */
1365 exargs = exargs->next, acargs = acargs->next, argCnt++ ) {
1366 if ( checkType(exargs->type,acargs->type) <= 0) {
1367 werror(E_ARG_TYPE,argCnt);
1372 /* if one them ended we have a problem */
1373 if ((exargs && !acargs && !IS_VOID(exargs->type)) ||
1374 (!exargs && acargs && !IS_VOID(acargs->type)))
1375 werror(E_ARG_COUNT);
1377 /* replace with this defition */
1378 sym->cdef = csym->cdef;
1379 deleteSym (SymbolTab,csym,csym->name);
1380 addSym (SymbolTab,sym,sym->name,sym->level,sym->block);
1381 if (IS_EXTERN(csym->etype) && !
1382 IS_EXTERN(sym->etype)) {
1383 addSet(&publics,sym);
1388 /*-----------------------------------------------------------------*/
1389 /* processFuncArgs - does some processing with function args */
1390 /*-----------------------------------------------------------------*/
1391 void processFuncArgs (symbol *func, int ignoreName)
1397 /* if this function has variable argument list */
1398 /* then make the function a reentrant one */
1400 SPEC_RENT(func->etype) = 1;
1402 /* check if this function is defined as calleeSaves
1403 then mark it as such */
1404 func->calleeSave = inCalleeSaveList(func->name);
1406 val = func->args; /* loop thru all the arguments */
1408 /* if it is void then remove parameters */
1409 if (val && IS_VOID(val->type)) {
1414 /* reset regparm for the port */
1415 (*port->reset_regparms)();
1416 /* if any of the arguments is an aggregate */
1417 /* change it to pointer to the same type */
1419 /* mark it as a register parameter if
1420 the function does not have VA_ARG
1421 and as port dictates
1422 not inhibited by command line option or #pragma */
1423 if (!func->hasVargs &&
1424 !options.noregparms &&
1425 !IS_RENT(func->etype) &&
1426 (*port->reg_parm)(val->type)) {
1427 SPEC_REGPARM(val->etype) = 1;
1430 if ( IS_AGGREGATE(val->type)) {
1431 /* if this is a structure */
1432 /* then we need to add a new link */
1433 if (IS_STRUCT(val->type)) {
1434 /* first lets add DECLARATOR type */
1435 link *p = val->type ;
1437 werror(W_STRUCT_AS_ARG,val->name);
1438 val->type = newLink();
1439 val->type->next = p ;
1442 /* change to a pointer depending on the */
1443 /* storage class specified */
1444 switch (SPEC_SCLS(val->etype)) {
1446 DCL_TYPE(val->type) = IPOINTER;
1449 DCL_TYPE(val->type) = PPOINTER;
1455 DCL_TYPE(val->type) = POINTER ;
1458 DCL_TYPE(val->type) = CPOINTER;
1461 DCL_TYPE(val->type) = FPOINTER;
1464 DCL_TYPE(val->type) = EEPPOINTER;
1467 DCL_TYPE(val->type) = GPOINTER;
1470 /* is there is a symbol associated then */
1471 /* change the type of the symbol as well*/
1473 val->sym->type = copyLinkChain(val->type);
1474 val->sym->etype = getSpec(val->sym->type);
1482 /* if this function is reentrant or */
1483 /* automatics r 2b stacked then nothing */
1484 if (IS_RENT(func->etype) || options.stackAuto )
1491 /* if a symbolname is not given */
1492 /* synthesize a variable name */
1495 sprintf(val->name,"_%s_PARM_%d",func->name,pNum++);
1496 val->sym = newSymbol(val->name,1);
1497 SPEC_OCLS(val->etype) = port->mem.default_local_map;
1498 val->sym->type = copyLinkChain (val->type);
1499 val->sym->etype = getSpec (val->sym->type);
1500 val->sym->_isparm = 1;
1501 strcpy (val->sym->rname,val->name);
1502 SPEC_STAT(val->etype) = SPEC_STAT(val->sym->etype) =
1503 SPEC_STAT(func->etype);
1504 addSymChain(val->sym);
1507 else /* symbol name given create synth name */ {
1509 sprintf(val->name,"_%s_PARM_%d",func->name,pNum++);
1510 strcpy (val->sym->rname,val->name);
1511 val->sym->_isparm = 1;
1512 SPEC_OCLS(val->etype) = SPEC_OCLS(val->sym->etype) =
1513 (options.model ? xdata : data);
1514 SPEC_STAT(val->etype) = SPEC_STAT(val->sym->etype) =
1515 SPEC_STAT(func->etype);
1521 /*-----------------------------------------------------------------*/
1522 /* isSymbolEqual - compares two symbols return 1 if they match */
1523 /*-----------------------------------------------------------------*/
1524 int isSymbolEqual (symbol *dest, symbol *src)
1526 /* if pointers match then equal */
1530 /* if one of them is null then don't match */
1534 /* if both of them have rname match on rname */
1535 if (dest->rname[0] && src->rname[0])
1536 return (!strcmp(dest->rname,src->rname));
1538 /* otherwise match on name */
1539 return (!strcmp(dest->name,src->name));
1542 /*-----------------------------------------------------------------*/
1543 /* printTypeChain - prints the type chain in human readable form */
1544 /*-----------------------------------------------------------------*/
1545 void printTypeChain (link *type, FILE *of)
1555 if (IS_DECL(type)) {
1556 switch (DCL_TYPE(type)) {
1558 fprintf (of,"function ");
1561 fprintf (of,"_generic * ");
1562 if (DCL_PTR_CONST(type))
1563 fprintf(of,"const ");
1566 fprintf (of,"_code * ");
1567 if (DCL_PTR_CONST(type))
1568 fprintf(of,"const ");
1571 fprintf (of,"_far * ");
1572 if (DCL_PTR_CONST(type))
1573 fprintf(of,"const ");
1576 fprintf (of,"_eeprom * ");
1577 if (DCL_PTR_CONST(type))
1578 fprintf(of,"const ");
1582 fprintf (of,"_near * ");
1583 if (DCL_PTR_CONST(type))
1584 fprintf(of,"const ");
1587 fprintf (of,"_idata *");
1588 if (DCL_PTR_CONST(type))
1589 fprintf(of,"const ");
1592 fprintf (of,"_pdata *");
1593 if (DCL_PTR_CONST(type))
1594 fprintf(of,"const ");
1597 fprintf (of," _unkown *");
1598 if (DCL_PTR_CONST(type))
1599 fprintf(of,"const ");
1603 fprintf (of,"array of ");
1607 if (SPEC_VOLATILE(type))
1608 fprintf (of,"volatile ");
1609 if (SPEC_USIGN(type))
1610 fprintf (of,"unsigned ");
1612 switch (SPEC_NOUN(type)) {
1615 fprintf (of,"long ");
1618 fprintf (of,"short ");
1620 fprintf (of,"int ");
1624 fprintf(of,"char ");
1628 fprintf(of,"void ");
1632 fprintf(of,"float ");
1636 fprintf(of,"struct %s",SPEC_STRUCT(type)->tag);
1640 fprintf(of,"sbit ");
1644 fprintf(of,"bit {%d,%d}",SPEC_BSTR(type),SPEC_BLEN(type));
1657 /*-----------------------------------------------------------------*/
1658 /* cdbTypeInfo - print the type information for debugger */
1659 /*-----------------------------------------------------------------*/
1660 void cdbTypeInfo (link *type,FILE *of)
1662 fprintf(of,"{%d}",getSize(type));
1664 if (IS_DECL(type)) {
1665 switch (DCL_TYPE(type)) {
1691 fprintf (of,"DA%d,",DCL_ELEM(type));
1697 switch (SPEC_NOUN(type)) {
1721 fprintf(of,"ST%s",SPEC_STRUCT(type)->tag);
1729 fprintf(of,"SB%d$%d",SPEC_BSTR(type),SPEC_BLEN(type));
1736 if (SPEC_USIGN(type))
1744 /*-----------------------------------------------------------------*/
1745 /* cdbSymbol - prints a symbol & its type information for debugger */
1746 /*-----------------------------------------------------------------*/
1747 void cdbSymbol ( symbol *sym, FILE *of, int isStructSym, int isFunc)
1759 fprintf(of,"S:"); /* symbol record */
1760 /* if this is not a structure symbol then
1761 we need to figure out the scope information */
1765 if (IS_STATIC(sym->etype))
1766 fprintf(of,"F%s$",moduleName); /* scope is file */
1768 fprintf(of,"G$"); /* scope is global */
1771 /* symbol is local */
1772 fprintf(of,"L%s$",(sym->localof ? sym->localof->name : "-null-"));
1774 fprintf(of,"S$"); /* scope is structure */
1776 /* print the name, & mangled name */
1777 fprintf(of,"%s$%d$%d(",sym->name,
1778 sym->level,sym->block);
1780 cdbTypeInfo(sym->type,of);
1783 /* print the address space */
1784 map = SPEC_OCLS(sym->etype);
1785 fprintf(of,"%c,%d,%d",
1786 (map ? map->dbName : 'Z') ,sym->onStack,SPEC_STAK(sym->etype));
1788 /* if assigned to registers then output register names */
1789 /* if this is a function then print
1790 if is it an interrupt routine & interrupt number
1791 and the register bank it is using */
1793 fprintf(of,",%d,%d,%d",SPEC_INTRTN(sym->etype),
1794 SPEC_INTN(sym->etype),SPEC_BANK(sym->etype));
1795 /* alternate location to find this symbol @ : eg registers
1802 /*-----------------------------------------------------------------*/
1803 /* cdbStruct - print a structure for debugger */
1804 /*-----------------------------------------------------------------*/
1805 void cdbStruct ( structdef *sdef,int block,FILE *of,
1806 int inStruct, char *tag)
1811 /* if block # then must have function scope */
1812 fprintf(of,"F%s$",moduleName);
1813 fprintf(of,"%s[",(tag ? tag : sdef->tag));
1814 for (sym=sdef->fields ; sym ; sym = sym->next) {
1815 fprintf(of,"({%d}",sym->offset);
1816 cdbSymbol(sym,of,TRUE,FALSE);
1824 /*------------------------------------------------------------------*/
1825 /* cdbStructBlock - calls struct printing for a blcks */
1826 /*------------------------------------------------------------------*/
1827 void cdbStructBlock (int block , FILE *of)
1830 bucket **table = StructTab;
1834 /* go thru the entire table */
1835 for ( i = 0 ; i < 256; i++ ) {
1836 for ( chain = table[i]; chain ; chain = chain->next ) {
1837 if (chain->block >= block) {
1838 cdbStruct((structdef *)chain->sym, chain->block ,of,0,NULL);
1844 /*-----------------------------------------------------------------*/
1845 /* powof2 - returns power of two for the number if number is pow 2 */
1846 /*-----------------------------------------------------------------*/
1847 int powof2 (unsigned long num)
1853 if (num & 1) n1s++ ;
1858 if (n1s > 1 || nshifts == 0) return 0;
1859 return nshifts - 1 ;
1873 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
1874 symbol *__muldiv[3][3][2];
1875 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
1876 link *__multypes[3][2];
1877 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
1878 symbol *__conv[2][3][2];
1882 static void _makeRegParam(symbol *sym)
1886 val = sym->args; /* loop thru all the arguments */
1888 /* reset regparm for the port */
1889 (*port->reset_regparms)();
1891 SPEC_REGPARM(val->etype) = 1;
1892 sym->argStack -= getSize(val->type);
1897 /*-----------------------------------------------------------------*/
1898 /* initCSupport - create functions for C support routines */
1899 /*-----------------------------------------------------------------*/
1900 void initCSupport ()
1902 const char *smuldivmod[] = {
1905 const char *sbwd[] = {
1906 "char", "int", "long"
1908 const char *ssu[] = {
1912 int bwd, su, muldivmod, tofrom;
1914 floatType= newFloatLink();
1916 for (bwd = 0; bwd < 3; bwd++) {
1931 __multypes[bwd][0] = l;
1932 __multypes[bwd][1] = copyLinkChain(l);
1933 SPEC_USIGN(__multypes[bwd][1]) = 1;
1936 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
1937 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
1938 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
1939 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
1940 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
1941 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
1942 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
1943 __fslteq= funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
1944 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
1945 __fsgteq= funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
1947 for (tofrom = 0; tofrom < 2; tofrom++) {
1948 for (bwd = 0; bwd < 3; bwd++) {
1949 for (su = 0; su < 2; su++) {
1951 sprintf(buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
1952 __conv[tofrom][bwd][su] = funcOfType(buffer, __multypes[bwd][su], floatType, 1, options.float_rent);
1955 sprintf(buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
1956 __conv[tofrom][bwd][su] = funcOfType(buffer, floatType, __multypes[bwd][su], 1, options.float_rent);
1962 for (muldivmod = 0; muldivmod < 3; muldivmod++) {
1963 for (bwd = 0; bwd < 3; bwd++) {
1964 for (su = 0; su < 2; su++) {
1965 sprintf(buffer, "_%s%s%s",
1966 smuldivmod[muldivmod],
1969 __muldiv[muldivmod][bwd][su] = funcOfType(buffer, __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
1970 SPEC_NONBANKED(__muldiv[muldivmod][bwd][su]->etype) = 1;
1971 if (bwd < port->muldiv.force_reg_param_below)
1972 _makeRegParam(__muldiv[muldivmod][bwd][su]);