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 /*------------------------------------------------------------------*/
33 /* initSymt () - initialises symbol table related stuff */
34 /*------------------------------------------------------------------*/
39 for ( i = 0 ; i < 256 ; i++ )
40 SymbolTab[i] = StructTab[i] = (void *) NULL ;
44 /*-----------------------------------------------------------------*/
45 /* newBucket - allocates & returns a new bucket */
46 /*-----------------------------------------------------------------*/
51 ALLOC(bp,sizeof(bucket));
56 /*-----------------------------------------------------------------*/
57 /* hashKey - computes the hashkey given a symbol name */
58 /*-----------------------------------------------------------------*/
59 int hashKey (const char *s)
61 unsigned long key = 0;
68 /*-----------------------------------------------------------------*/
69 /* addSym - adds a symbol to the hash Table */
70 /*-----------------------------------------------------------------*/
71 void addSym ( bucket **stab ,
77 int i ; /* index into the hash Table */
78 bucket *bp ; /* temp bucket * */
80 /* the symbols are always added at the head of the list */
82 /* get a free entry */
83 ALLOC(bp,sizeof(bucket));
85 bp->sym = sym ; /* update the symbol pointer */
86 bp->level = level; /* update the nest level */
88 strcpy(bp->name,sname); /* copy the name into place */
90 /* if this is the first entry */
91 if (stab[i] == NULL) {
92 bp->prev = bp->next = (void *) NULL ; /* point to nothing */
95 /* not first entry then add @ head of list */
104 /*-----------------------------------------------------------------*/
105 /* deleteSym - deletes a symbol from the hash Table entry */
106 /*-----------------------------------------------------------------*/
107 void deleteSym ( bucket **stab, void *sym, char *sname)
115 /* find the symbol */
117 if (bp->sym == sym) /* found it then break out */
118 break ; /* of the loop */
122 if (!bp) /* did not find it */
124 /* if this is the first one in the chain */
127 if ( stab[i] ) /* if chain ! empty */
128 stab[i]->prev = (void *) NULL ;
130 /* middle || end of chain */
132 if ( bp->next ) /* if not end of chain */
133 bp->next->prev = bp->prev ;
135 bp->prev->next = bp->next ;
140 /*-----------------------------------------------------------------*/
141 /* findSym - finds a symbol in a table */
142 /*-----------------------------------------------------------------*/
143 void *findSym ( bucket **stab, void *sym, const char *sname)
147 bp = stab[hashKey(sname)] ;
150 if ( bp->sym == sym || strcmp (bp->name,sname) == 0 )
155 return ( bp ? bp->sym : (void *) NULL ) ;
158 /*-----------------------------------------------------------------*/
159 /* findSymWithLevel - finds a symbol with a name & level */
160 /*-----------------------------------------------------------------*/
161 void *findSymWithLevel ( bucket **stab, symbol *sym)
165 bp = stab[hashKey(sym->name)];
168 ** do the search from the head of the list since the
169 ** elements are added at the head it is ensured that
170 ** we will find the deeper definitions before we find
171 ** the global ones. we need to check for symbols with
172 ** level <= to the level given, if levels match then block
173 ** numbers need to match as well
177 if ( strcmp(bp->name,sym->name) == 0 && bp->level <= sym->level) {
178 /* if this is parameter then nothing else need to be checked */
179 if (((symbol *)(bp->sym))->_isparm)
181 /* if levels match then block numbers hsould also match */
182 if (bp->level && bp->level == sym->level && bp->block == sym->block )
184 /* if levels don't match then we are okay */
185 if (bp->level && bp->level != sym->level)
187 /* if this is a global variable then we are ok too */
195 return (void *) NULL ;
198 /*-----------------------------------------------------------------*/
199 /* findSymWithBlock - finds a symbol with name in with a block */
200 /*-----------------------------------------------------------------*/
201 void *findSymWithBlock ( bucket **stab, symbol *sym, int block)
205 bp = stab[hashKey(sym->name)] ;
208 if ( strcmp (bp->name,sym->name) == 0 &&
214 return ( bp ? bp->sym : (void *) NULL ) ;
217 /*------------------------------------------------------------------*/
218 /* newSymbol () - returns a new pointer to a symbol */
219 /*------------------------------------------------------------------*/
220 symbol *newSymbol (char *name, int scope )
224 ALLOC(sym,sizeof(symbol));
226 strcpy(sym->name,name); /* copy the name */
227 sym->level = scope ; /* set the level */
228 sym->block = currBlockno ;
229 sym->lineDef = yylineno ; /* set the line number */
233 /*------------------------------------------------------------------*/
234 /* newLink - creates a new link (declarator,specifier) */
235 /*------------------------------------------------------------------*/
240 ALLOC(p,sizeof(link));
245 /*------------------------------------------------------------------*/
246 /* newStruct - creats a new structdef from the free list */
247 /*------------------------------------------------------------------*/
248 structdef *newStruct ( char *tag )
252 ALLOC(s,sizeof(structdef));
254 strcpy(s->tag,tag) ; /* copy the tag */
258 /*------------------------------------------------------------------*/
259 /* pointerTypes - do the computation for the pointer types */
260 /*------------------------------------------------------------------*/
261 void pointerTypes (link *ptr, link *type)
266 /* find the first pointer type */
267 while (ptr && !IS_PTR(ptr))
270 /* could not find it */
271 if (!ptr || IS_SPEC(ptr) ||
272 DCL_TYPE(ptr) != UPOINTER)
275 /* change the pointer type depending on the
276 storage class of the type */
278 DCL_PTR_CONST(ptr) = SPEC_CONST(type);
279 DCL_PTR_VOLATILE(ptr) = SPEC_VOLATILE(type);
280 switch (SPEC_SCLS(type)) {
282 DCL_TYPE(ptr) = FPOINTER;
285 DCL_TYPE(ptr) = IPOINTER ;
288 DCL_TYPE(ptr) = PPOINTER ;
291 DCL_TYPE(ptr) = POINTER ;
294 DCL_PTR_CONST(ptr) = port->mem.code_ro;
295 DCL_TYPE(ptr) = CPOINTER ;
298 DCL_TYPE(ptr) = EEPPOINTER;
301 DCL_TYPE(ptr) = GPOINTER;
304 /* the storage class of type ends here */
307 SPEC_VOLATILE(type) = 0;
310 /* now change all the remaining unknown pointers
311 to generic pointers */
313 if (!IS_SPEC(ptr) && DCL_TYPE(ptr) == UPOINTER)
314 DCL_TYPE(ptr) = GPOINTER;
318 /* same for the type although it is highly unlikely that
319 type will have a pointer */
321 if (!IS_SPEC(type) && DCL_TYPE(type) == UPOINTER)
322 DCL_TYPE(type) = GPOINTER;
328 /*------------------------------------------------------------------*/
329 /* addDecl - adds a declarator @ the end of a chain */
330 /*------------------------------------------------------------------*/
331 void addDecl ( symbol *sym, int type , link *p )
337 /* if we are passed a link then set head & tail */
344 head = tail = newLink() ;
345 DCL_TYPE(head) = type ;
348 /* if this is the first entry */
354 if ( IS_SPEC(sym->etype) && IS_SPEC(head) && head == tail ) {
355 sym->etype = mergeSpec(sym->etype,head);
358 if ( IS_SPEC(sym->etype) && !IS_SPEC(head) && head == tail ) {
360 while (t->next != sym->etype) t = t->next ;
362 tail->next = sym->etype;
364 sym->etype->next = head;
370 /* if the type is a unknown pointer and has
371 a tspec then take the storage class const & volatile
372 attribute from the tspec & make it those of this
376 DCL_TYPE(p) == UPOINTER &&
378 if (!IS_SPEC(sym->etype)) {
379 sym->etype = sym->etype->next = newLink();
380 sym->etype->class = SPECIFIER;
382 SPEC_SCLS(sym->etype) = SPEC_SCLS(DCL_TSPEC(p));
383 SPEC_CONST(sym->etype) = SPEC_CONST(DCL_TSPEC(p));
384 SPEC_VOLATILE(sym->etype) = SPEC_VOLATILE(DCL_TSPEC(p));
390 /*------------------------------------------------------------------*/
391 /* mergeSpec - merges two specifiers and returns the new one */
392 /*------------------------------------------------------------------*/
393 link *mergeSpec ( link *dest, link *src )
395 /* if noun different then src overrides */
396 if ( SPEC_NOUN(dest) != SPEC_NOUN(src) && !SPEC_NOUN(dest))
397 SPEC_NOUN(dest) = SPEC_NOUN(src) ;
399 if (! SPEC_SCLS(dest)) /* if destination has no storage class */
400 SPEC_SCLS(dest) = SPEC_SCLS(src) ;
402 /* copy all the specifications */
403 SPEC_LONG(dest) |= SPEC_LONG(src);
404 SPEC_SHORT(dest) |= SPEC_SHORT(src);
405 SPEC_USIGN(dest) |= SPEC_USIGN(src);
406 SPEC_STAT(dest) |= SPEC_STAT(src);
407 SPEC_EXTR(dest) |= SPEC_EXTR(src);
408 SPEC_ABSA(dest) |= SPEC_ABSA(src);
409 SPEC_RENT(dest) |= SPEC_RENT(src);
410 SPEC_INTN(dest) |= SPEC_INTN(src);
411 SPEC_BANK(dest) |= SPEC_BANK(src);
412 SPEC_VOLATILE(dest) |= SPEC_VOLATILE(src);
413 SPEC_CRTCL(dest) |= SPEC_CRTCL(src);
414 SPEC_ADDR(dest) |= SPEC_ADDR(src);
415 SPEC_OCLS(dest) = SPEC_OCLS(src);
416 SPEC_BLEN(dest) |= SPEC_BLEN(src);
417 SPEC_BSTR(dest) |= SPEC_BSTR(src);
418 SPEC_TYPEDEF(dest) |= SPEC_TYPEDEF(src);
419 SPEC_NONBANKED(dest) |= SPEC_NONBANKED(src);
421 if ( IS_STRUCT(dest) && SPEC_STRUCT(dest) == NULL )
422 SPEC_STRUCT(dest) = SPEC_STRUCT(src);
427 /*------------------------------------------------------------------*/
428 /* cloneSpec - copies the entire spec and returns a new spec */
429 /*------------------------------------------------------------------*/
430 link *cloneSpec ( link *src )
434 /* go thru chain till we find the specifier */
435 while ( src && src->class != SPECIFIER )
439 memcpy (spec,src,sizeof(link));
443 /*------------------------------------------------------------------*/
444 /* genSymName - generates and returns a name used for anonymous vars*/
445 /*------------------------------------------------------------------*/
446 char *genSymName ( int level )
448 static int gCount = 0 ;
449 static char gname[SDCC_NAME_MAX+1] ;
451 sprintf (gname,"__%04d%04d",level,gCount++);
455 /*------------------------------------------------------------------*/
456 /* getSpec - returns the specifier part from a declaration chain */
457 /*------------------------------------------------------------------*/
458 link *getSpec ( link *p )
463 while ( p && ! (IS_SPEC(p)))
469 /*------------------------------------------------------------------*/
470 /* newCharLink() - creates an int type */
471 /*------------------------------------------------------------------*/
477 p->class = SPECIFIER ;
478 SPEC_NOUN(p) = V_CHAR ;
483 /*------------------------------------------------------------------*/
484 /* newFloatLink - a new Float type */
485 /*------------------------------------------------------------------*/
491 p->class = SPECIFIER ;
492 SPEC_NOUN(p) = V_FLOAT ;
497 /*------------------------------------------------------------------*/
498 /* newLongLink() - new long type */
499 /*------------------------------------------------------------------*/
505 p->class = SPECIFIER ;
506 SPEC_NOUN(p) = V_INT ;
512 /*------------------------------------------------------------------*/
513 /* newIntLink() - creates an int type */
514 /*------------------------------------------------------------------*/
520 p->class = SPECIFIER ;
521 SPEC_NOUN(p) = V_INT ;
526 /*------------------------------------------------------------------*/
527 /* getSize - returns size of a type chain in bits */
528 /*------------------------------------------------------------------*/
529 unsigned int getSize ( link *p )
531 /* if nothing return 0 */
534 if ( IS_SPEC(p) ) { /* if this is the specifier then */
535 switch (SPEC_NOUN(p)) { /* depending on the specifier type */
537 return (IS_LONG(p) ? LONGSIZE : ( IS_SHORT(p) ? SHORTSIZE: INTSIZE)) ;
545 return SPEC_STRUCT(p)->size ;
551 return ((SPEC_BLEN(p) / 8) + (SPEC_BLEN(p) % 8 ? 1 : 0)) ;
557 /* this is a specifier */
558 switch (DCL_TYPE(p)) {
562 return DCL_ELEM(p) * getSize (p->next) ;
579 /*------------------------------------------------------------------*/
580 /* bitsForType - returns # of bits required to store this type */
581 /*------------------------------------------------------------------*/
582 unsigned int bitsForType ( link *p )
584 /* if nothing return 0 */
588 if ( IS_SPEC(p) ) { /* if this is the specifier then */
590 switch (SPEC_NOUN(p)) { /* depending on the specifier type */
592 return (IS_LONG(p) ? LONGSIZE*8 : ( IS_SHORT(p) ? SHORTSIZE*8: INTSIZE*8)) ;
600 return SPEC_STRUCT(p)->size*8 ;
612 /* this is a specifier */
613 switch (DCL_TYPE(p)) {
617 return DCL_ELEM(p) * getSize (p->next) *8 ;
621 return ( PTRSIZE * 8) ;
625 return ( FPTRSIZE * 8);
627 return ( GPTRSIZE * 8);
634 /*------------------------------------------------------------------*/
635 /* copySymbolChain - copies a symbol chain */
636 /*------------------------------------------------------------------*/
637 symbol *copySymbolChain (symbol *src)
644 dest = copySymbol(src);
645 dest->next = copySymbolChain(src->next);
649 /*------------------------------------------------------------------*/
650 /* copySymbol - makes a copy of a symbol */
651 /*------------------------------------------------------------------*/
652 symbol *copySymbol (symbol *src)
659 dest = newSymbol( src->name, src->level );
660 memcpy(dest,src,sizeof(symbol));
661 dest->level = src->level ;
662 dest->block = src->block ;
663 dest->ival = copyIlist(src->ival);
664 dest->type = copyLinkChain(src->type);
665 dest->etype= getSpec(dest->type);
667 dest->args = copyValueChain (src->args);
668 dest->key = src->key;
669 dest->calleeSave = src->calleeSave;
670 dest->allocreq = src->allocreq;
674 /*------------------------------------------------------------------*/
675 /* reverseSyms - reverses the links for a symbol chain */
676 /*------------------------------------------------------------------*/
677 symbol *reverseSyms ( symbol *sym)
679 symbol *prev , *curr, *next ;
694 sym->next = (void *) NULL ;
698 /*------------------------------------------------------------------*/
699 /* reverseLink - reverses the links for a type chain */
700 /*------------------------------------------------------------------*/
701 link *reverseLink ( link *type)
703 link *prev , *curr, *next ;
718 type->next = (void *) NULL ;
722 /*------------------------------------------------------------------*/
723 /* addSymChain - adds a symbol chain to the symboltable */
724 /*------------------------------------------------------------------*/
725 void addSymChain ( symbol *symHead )
727 symbol *sym = symHead ;
728 symbol *csym = NULL ;
730 for (;sym != NULL ; sym = sym->next ) {
732 /* if already exists in the symbol table then check if
733 the previous was an extern definition if yes then
734 then check if the type match, if the types match then
735 delete the current entry and add the new entry */
736 if ((csym = findSymWithLevel (SymbolTab,sym)) &&
737 csym->level == sym->level) {
739 /* previous definition extern ? */
740 if ( IS_EXTERN(csym->etype) ) {
741 /* do types match ? */
742 if (checkType ( csym->type,sym->type) != 1)
744 werror (E_DUPLICATE,csym->name);
746 /* delete current entry */
747 deleteSym (SymbolTab, csym, csym->name );
749 addSym (SymbolTab, sym, sym->name, sym->level,sym->block);
750 } else /* not extern */
751 werror(E_DUPLICATE,sym->name) ;
755 /* check if previously defined */
756 if (csym && csym->level == sym->level ) {
757 /* if the previous one was declared as extern */
758 /* then check the type with the current one */
759 if ( IS_EXTERN(csym->etype) ) {
760 if ( checkType (csym->type, sym->type ) <= 0 )
761 werror (W_EXTERN_MISMATCH,csym->name);
765 addSym (SymbolTab,sym,sym->name,sym->level,sym->block) ;
770 /*------------------------------------------------------------------*/
771 /* funcInChain - DCL Type 'FUNCTION' found in type chain */
772 /*------------------------------------------------------------------*/
773 int funcInChain (link *lnk)
783 /*------------------------------------------------------------------*/
784 /* structElemType - returns the type info of a sturct member */
785 /*------------------------------------------------------------------*/
786 link *structElemType (link *stype, value *id ,value **argsp)
788 symbol *fields = (SPEC_STRUCT(stype) ? SPEC_STRUCT(stype)->fields : NULL);
790 if ( ! fields || ! id)
793 /* look for the id */
795 if (strcmp(fields->rname,id->name) == 0) {
797 *argsp = fields->args;
799 return copyLinkChain (fields->type) ;
801 fields = fields->next ;
803 werror(E_NOT_MEMBER,id->name);
808 /*------------------------------------------------------------------*/
809 /* getStructElement - returns element of a tructure definition */
810 /*------------------------------------------------------------------*/
811 symbol *getStructElement ( structdef *sdef, symbol *sym)
815 for ( field = sdef->fields ; field ; field = field->next )
816 if ( strcmp(field->name,sym->name) == 0)
819 werror(E_NOT_MEMBER,sym->name);
821 return sdef->fields ;
824 /*------------------------------------------------------------------*/
825 /* compStructSize - computes the size of a structure */
826 /*------------------------------------------------------------------*/
827 int compStructSize (int su, structdef *sdef )
829 int sum = 0 , usum =0;
833 /* for the identifiers */
834 loop = sdef->fields ;
837 /* create the internal name for this variable */
838 sprintf (loop->rname,"_%s",loop->name);
839 loop->offset = ( su == UNION ? sum = 0 : sum ) ;
840 SPEC_VOLATILE(loop->etype) |= (su == UNION ? 1 : 0);
842 /* if this is a bit field */
845 /* change it to a unsigned bit */
846 SPEC_NOUN(loop->etype) = V_BIT ;
847 SPEC_USIGN(loop->etype) = 1 ;
848 /* check if this fit into the remaining */
849 /* bits of this byte else align it to the */
850 /* next byte boundary */
851 if ((SPEC_BLEN(loop->etype)=loop->bitVar) <= (8 - bitOffset)) {
852 SPEC_BSTR(loop->etype) = bitOffset ;
853 sum += (loop->bitVar / 8) ;
854 bitOffset += (loop->bitVar % 8);
856 else /* does not fit */
859 loop->offset++; /* go to the next byte */
861 SPEC_BSTR(loop->etype) = bitOffset ;
862 sum += (loop->bitVar / 8) ;
863 bitOffset += (loop->bitVar % 8);
865 /* if this is the last field then pad */
866 if (!loop->next && bitOffset) {
873 sum += getSize (loop->type) ;
876 /* if function then do the arguments for it */
877 if (funcInChain(loop->type)) {
878 processFuncArgs (loop, 1);
883 /* if this is not a bitfield but the */
884 /* previous one was and did not take */
885 /* the whole byte then pad the rest */
886 if ((loop && !loop->bitVar) && bitOffset) {
891 /* if union then size = sizeof larget field */
893 usum = max(usum,sum);
897 return (su == UNION ? usum : sum);
900 /*------------------------------------------------------------------*/
901 /* checkSClass - check the storage class specification */
902 /*------------------------------------------------------------------*/
903 static void checkSClass ( symbol *sym )
905 /* type is literal can happen foe enums change
907 if (SPEC_SCLS(sym->etype) == S_LITERAL && !SPEC_ENUM(sym->etype))
908 SPEC_SCLS(sym->etype) = S_AUTO;
910 /* if sfr or sbit then must also be */
911 /* volatile the initial value will be xlated */
912 /* to an absolute address */
913 if (SPEC_SCLS(sym->etype) == S_SBIT ||
914 SPEC_SCLS(sym->etype) == S_SFR ) {
915 SPEC_VOLATILE(sym->etype) = 1;
916 /* if initial value given */
918 SPEC_ABSA(sym->etype) = 1;
919 SPEC_ADDR(sym->etype) =
920 (int) list2int(sym->ival);
925 /* if absolute address given then it mark it as
927 if (IS_ABSOLUTE(sym->etype))
928 SPEC_VOLATILE(sym->etype) = 1;
930 /* global variables declared const put into code */
931 if (sym->level == 0 &&
932 SPEC_SCLS(sym->etype) == S_CONSTANT) {
933 SPEC_SCLS(sym->etype) = S_CODE ;
934 SPEC_CONST(sym->etype) = 1;
937 /* global variable in code space is a constant */
938 if (sym->level == 0 &&
939 SPEC_SCLS(sym->etype) == S_CODE &&
941 SPEC_CONST(sym->etype) = 1;
944 /* if bit variable then no storage class can be */
945 /* specified since bit is already a storage */
946 if ( IS_BITVAR(sym->etype) &&
947 ( SPEC_SCLS(sym->etype) != S_FIXED &&
948 SPEC_SCLS(sym->etype) != S_SBIT &&
949 SPEC_SCLS(sym->etype) != S_BIT )
951 werror (E_BITVAR_STORAGE,sym->name);
952 SPEC_SCLS(sym->etype) = S_FIXED ;
955 /* extern variables cannot be initialized */
956 if (IS_EXTERN(sym->etype) && sym->ival) {
957 werror(E_EXTERN_INIT,sym->name);
961 /* if this is an automatic symbol then */
962 /* storage class will be ignored and */
963 /* symbol will be allocated on stack/ */
964 /* data depending on flag */
966 (options.stackAuto || reentrant ) &&
967 ( SPEC_SCLS(sym->etype) != S_AUTO &&
968 SPEC_SCLS(sym->etype) != S_FIXED &&
969 SPEC_SCLS(sym->etype) != S_REGISTER &&
970 SPEC_SCLS(sym->etype) != S_STACK &&
971 SPEC_SCLS(sym->etype) != S_XSTACK &&
972 SPEC_SCLS(sym->etype) != S_CONSTANT )) {
974 werror(E_AUTO_ASSUMED,sym->name) ;
975 SPEC_SCLS(sym->etype) = S_AUTO ;
978 /* automatic symbols cannot be given */
979 /* an absolute address ignore it */
981 SPEC_ABSA(sym->etype) &&
982 (options.stackAuto || reentrant) ) {
983 werror(E_AUTO_ABSA,sym->name);
984 SPEC_ABSA(sym->etype) = 0 ;
987 /* arrays & pointers cannot be defined for bits */
988 /* SBITS or SFRs or BIT */
989 if ((IS_ARRAY(sym->type) || IS_PTR(sym->type)) &&
990 ( SPEC_NOUN(sym->etype) == V_BIT ||
991 SPEC_NOUN(sym->etype) == V_SBIT ||
992 SPEC_SCLS(sym->etype) == S_SFR ))
993 werror(E_BIT_ARRAY,sym->name);
995 /* if this is a bit|sbit then set length & start */
996 if (SPEC_NOUN(sym->etype) == V_BIT ||
997 SPEC_NOUN(sym->etype) == V_SBIT ) {
998 SPEC_BLEN(sym->etype) = 1 ;
999 SPEC_BSTR(sym->etype) = 0 ;
1002 /* variables declared in CODE space must have */
1003 /* initializers if not an extern */
1004 if (SPEC_SCLS(sym->etype) == S_CODE &&
1005 sym->ival == NULL &&
1007 port->mem.code_ro &&
1008 !IS_EXTERN(sym->etype))
1009 werror(E_CODE_NO_INIT,sym->name);
1011 /* if parameter or local variable then change */
1012 /* the storage class to reflect where the var will go */
1013 if ( sym->level && SPEC_SCLS(sym->etype) == S_FIXED) {
1014 if ( options.stackAuto || (currFunc && IS_RENT(currFunc->etype)))
1016 SPEC_SCLS(sym->etype) = (options.useXstack ?
1017 S_XSTACK : S_STACK ) ;
1021 /* hack-o-matic! I see no reason why the useXstack option should ever
1022 * control this allcoation, but the code was originally that way, and
1023 * changing it for non-390 ports breaks the compiler badly.
1025 bool useXdata = IS_DS390_PORT ? options.model : options.useXstack;
1026 SPEC_SCLS(sym->etype) = (useXdata ?
1027 S_XDATA : S_FIXED ) ;
1032 /*------------------------------------------------------------------*/
1033 /* changePointer - change pointer to functions */
1034 /*------------------------------------------------------------------*/
1035 void changePointer (symbol *sym)
1039 /* go thru the chain of declarations */
1040 /* if we find a pointer to a function */
1041 /* unconditionally change it to a ptr */
1043 for ( p = sym->type ; p ; p = p->next) {
1044 if ( !IS_SPEC(p) && DCL_TYPE(p) == UPOINTER)
1045 DCL_TYPE(p) = GPOINTER ;
1046 if ( IS_PTR(p) && IS_FUNC(p->next))
1047 DCL_TYPE(p) = CPOINTER ;
1051 /*------------------------------------------------------------------*/
1052 /* checkDecl - does semantic validation of a declaration */
1053 /*------------------------------------------------------------------*/
1054 int checkDecl ( symbol *sym )
1057 checkSClass (sym); /* check the storage class */
1058 changePointer(sym); /* change pointers if required */
1060 /* if this is an array without any dimension
1061 then update the dimension from the initial value */
1062 if (IS_ARRAY(sym->type) && !DCL_ELEM(sym->type))
1063 DCL_ELEM(sym->type) = getNelements (sym->type,sym->ival);
1068 /*------------------------------------------------------------------*/
1069 /* copyLinkChain - makes a copy of the link chain & rets ptr 2 head */
1070 /*------------------------------------------------------------------*/
1071 link *copyLinkChain ( link *p)
1073 link *head, *curr , *loop;
1076 head = loop = ( curr ? newLink() : (void *) NULL) ;
1078 memcpy(loop,curr,sizeof(link)) ; /* copy it */
1079 loop->next = (curr->next ? newLink() : (void *) NULL) ;
1088 /*------------------------------------------------------------------*/
1089 /* cleanUpBlock - cleansup the symbol table specified for all the */
1090 /* symbols in the given block */
1091 /*------------------------------------------------------------------*/
1092 void cleanUpBlock ( bucket **table, int block)
1097 /* go thru the entire table */
1098 for ( i = 0 ; i < 256; i++ ) {
1099 for ( chain = table[i]; chain ; chain = chain->next ) {
1100 if (chain->block >= block) {
1101 deleteSym (table,chain->sym,chain->name);
1107 /*------------------------------------------------------------------*/
1108 /* cleanUpLevel - cleansup the symbol table specified for all the */
1109 /* symbols in the given level */
1110 /*------------------------------------------------------------------*/
1111 void cleanUpLevel (bucket **table, int level )
1116 /* go thru the entire table */
1117 for ( i = 0 ; i < 256; i++ ) {
1118 for ( chain = table[i]; chain ; chain = chain->next ) {
1119 if (chain->level >= level) {
1120 deleteSym (table,chain->sym,chain->name);
1126 /*------------------------------------------------------------------*/
1127 /* computeType - computes the resultant type from two types */
1128 /*------------------------------------------------------------------*/
1129 link *computeType ( link *type1, link *type2)
1133 link *etype1 = getSpec(type1);
1134 link *etype2 = getSpec(type2);
1136 /* if one of them is a float then result is a float */
1137 /* here we assume that the types passed are okay */
1138 /* and can be cast to one another */
1139 /* which ever is greater in size */
1140 if (IS_FLOAT(etype1) || IS_FLOAT(etype2))
1141 rType = newFloatLink();
1143 /* if only one of them is a bit variable
1144 then the other one prevails */
1145 if (IS_BITVAR(etype1) && !IS_BITVAR(etype2))
1146 rType = copyLinkChain(type2);
1148 if (IS_BITVAR(etype2) && !IS_BITVAR(etype1))
1149 rType = copyLinkChain(type1);
1151 /* if one of them is a pointer then that
1154 rType = copyLinkChain(type1);
1157 rType = copyLinkChain(type2);
1159 if (getSize (type1) > getSize(type2) )
1160 rType = copyLinkChain(type1);
1162 rType = copyLinkChain(type2);
1164 reType = getSpec(rType);
1166 /* if either of them unsigned then make this unsigned */
1167 if ((SPEC_USIGN(etype1) || SPEC_USIGN(etype2)) && !IS_FLOAT(reType))
1168 SPEC_USIGN(reType) = 1;
1170 /* if result is a literal then make not so */
1171 if (IS_LITERAL(reType))
1172 SPEC_SCLS(reType) = S_REGISTER ;
1177 /*------------------------------------------------------------------*/
1178 /* checkType - will do type check return 1 if match */
1179 /*------------------------------------------------------------------*/
1180 int checkType ( link *dest, link *src )
1191 /* if dest is a declarator then */
1192 if (IS_DECL(dest)) {
1194 if (DCL_TYPE(src) == DCL_TYPE(dest))
1195 return checkType(dest->next,src->next);
1197 if (IS_PTR(src) && IS_PTR(dest))
1200 if (IS_PTR(dest) && IS_ARRAY(src))
1203 if (IS_PTR(dest) && IS_FUNC(dest->next) && IS_FUNC(src))
1204 return -1 * checkType (dest->next,src) ;
1209 if (IS_PTR(dest) && IS_INTEGRAL(src))
1215 /* if one of them is a void then ok */
1216 if (SPEC_NOUN(dest) == V_VOID &&
1217 SPEC_NOUN(src) != V_VOID )
1220 if (SPEC_NOUN(dest) != V_VOID &&
1221 SPEC_NOUN(src) == V_VOID )
1224 /* char === to short */
1225 if (SPEC_NOUN(dest) == V_CHAR &&
1226 SPEC_NOUN(src) == V_INT &&
1228 return (SPEC_USIGN(src) == SPEC_USIGN(dest) ? 1 : -2);
1230 if (SPEC_NOUN(src) == V_CHAR &&
1231 SPEC_NOUN(dest) == V_INT &&
1233 return (SPEC_USIGN(src) == SPEC_USIGN(dest) ? 1 : -2);
1235 /* if they are both bitfields then if the lengths
1236 and starts don't match */
1237 if (IS_BITFIELD(dest) && IS_BITFIELD(src) &&
1238 (SPEC_BLEN(dest) != SPEC_BLEN(src) ||
1239 SPEC_BSTR(dest) != SPEC_BSTR(src)))
1242 /* it is a specifier */
1243 if (SPEC_NOUN(dest) != SPEC_NOUN(src)) {
1244 if (SPEC_USIGN(dest) == SPEC_USIGN(src) &&
1245 IS_INTEGRAL(dest) && IS_INTEGRAL(src) &&
1246 getSize(dest) == getSize(src))
1249 if (IS_ARITHMETIC(dest) && IS_ARITHMETIC(src))
1255 if (IS_STRUCT(dest)) {
1256 if (SPEC_STRUCT(dest) != SPEC_STRUCT(src))
1261 if (SPEC_LONG(dest) != SPEC_LONG(src))
1264 if (SPEC_SHORT(dest) != SPEC_SHORT(src))
1267 if (SPEC_USIGN(dest) != SPEC_USIGN(src))
1273 /*------------------------------------------------------------------*/
1274 /* inCalleeSaveList - return 1 if found in calle save list */
1275 /*------------------------------------------------------------------*/
1276 bool inCalleeSaveList ( char *s)
1280 for (i = 0 ; options.calleeSaves[i] ; i++ )
1281 if (strcmp(options.calleeSaves[i],s) == 0)
1287 /*------------------------------------------------------------------*/
1288 /* checkFunction - does all kinds of check on a function */
1289 /*------------------------------------------------------------------*/
1290 int checkFunction (symbol *sym)
1293 value *exargs, *acargs ;
1296 /* if not type then some kind of error */
1300 /* if the function has no type then make it return int */
1301 if ( !sym->type->next )
1302 sym->type->next = sym->etype = newIntLink();
1304 /* function cannot return aggregate */
1305 if (IS_AGGREGATE(sym->type->next)) {
1306 werror(E_FUNC_AGGR,sym->name);
1310 /* function cannot return bit */
1311 if (IS_BITVAR(sym->type->next)) {
1312 werror(E_FUNC_BIT,sym->name);
1316 /* check if this function is defined as calleeSaves
1317 then mark it as such */
1318 sym->calleeSave = inCalleeSaveList(sym->name);
1320 /* if interrupt service routine */
1321 /* then it cannot have arguments */
1322 if ( sym->args && IS_ISR(sym->etype) && !IS_VOID(sym->args->type)) {
1323 werror(E_INT_ARGS,sym->name);
1327 if (!(csym = findSym (SymbolTab, sym, sym->name )))
1328 return 1 ; /* not defined nothing more to check */
1330 /* check if body already present */
1331 if ( csym && csym->fbody ) {
1332 werror(E_FUNC_BODY,sym->name);
1336 /* check the return value type */
1337 if (checkType (csym->type,sym->type) <= 0) {
1338 werror(E_PREV_DEF_CONFLICT,csym->name,"type") ;
1339 werror (E_CONTINUE,"previous defintion type ");
1340 printTypeChain(csym->type,stderr);fprintf(stderr,"\n");
1341 werror (E_CONTINUE,"current definition type ");
1342 printTypeChain(sym->type,stderr);fprintf(stderr,"\n");
1346 if ( SPEC_INTRTN(csym->etype) != SPEC_INTRTN(sym->etype)) {
1347 werror (E_PREV_DEF_CONFLICT,csym->name,"interrupt");
1351 if (SPEC_BANK(csym->etype) != SPEC_BANK(sym->etype)) {
1352 werror (E_PREV_DEF_CONFLICT,csym->name,"using");
1356 /* compare expected agrs with actual args */
1357 exargs = csym->args ;
1358 acargs = sym->args ;
1360 /* for all the expected args do */
1363 exargs = exargs->next, acargs = acargs->next, argCnt++ ) {
1364 if ( checkType(exargs->type,acargs->type) <= 0) {
1365 werror(E_ARG_TYPE,argCnt);
1370 /* if one them ended we have a problem */
1371 if ((exargs && !acargs && !IS_VOID(exargs->type)) ||
1372 (!exargs && acargs && !IS_VOID(acargs->type)))
1373 werror(E_ARG_COUNT);
1375 /* replace with this defition */
1376 sym->cdef = csym->cdef;
1377 deleteSym (SymbolTab,csym,csym->name);
1378 addSym (SymbolTab,sym,sym->name,sym->level,sym->block);
1379 if (IS_EXTERN(csym->etype) && !
1380 IS_EXTERN(sym->etype)) {
1381 addSet(&publics,sym);
1386 /*-----------------------------------------------------------------*/
1387 /* processFuncArgs - does some processing with function args */
1388 /*-----------------------------------------------------------------*/
1389 void processFuncArgs (symbol *func, int ignoreName)
1395 /* if this function has variable argument list */
1396 /* then make the function a reentrant one */
1398 SPEC_RENT(func->etype) = 1;
1400 /* check if this function is defined as calleeSaves
1401 then mark it as such */
1402 func->calleeSave = inCalleeSaveList(func->name);
1404 val = func->args; /* loop thru all the arguments */
1406 /* if it is void then remove parameters */
1407 if (val && IS_VOID(val->type)) {
1412 /* reset regparm for the port */
1413 (*port->reset_regparms)();
1414 /* if any of the arguments is an aggregate */
1415 /* change it to pointer to the same type */
1417 /* mark it as a register parameter if
1418 the function does not have VA_ARG
1419 and as port dictates
1420 not inhibited by command line option or #pragma */
1421 if (!func->hasVargs &&
1422 !options.noregparms &&
1423 !IS_RENT(func->etype) &&
1424 (*port->reg_parm)(val->type)) {
1425 SPEC_REGPARM(val->etype) = 1;
1428 if ( IS_AGGREGATE(val->type)) {
1429 /* if this is a structure */
1430 /* then we need to add a new link */
1431 if (IS_STRUCT(val->type)) {
1432 /* first lets add DECLARATOR type */
1433 link *p = val->type ;
1435 werror(W_STRUCT_AS_ARG,val->name);
1436 val->type = newLink();
1437 val->type->next = p ;
1440 /* change to a pointer depending on the */
1441 /* storage class specified */
1442 switch (SPEC_SCLS(val->etype)) {
1444 DCL_TYPE(val->type) = IPOINTER;
1447 DCL_TYPE(val->type) = PPOINTER;
1453 DCL_TYPE(val->type) = POINTER ;
1456 DCL_TYPE(val->type) = CPOINTER;
1459 DCL_TYPE(val->type) = FPOINTER;
1462 DCL_TYPE(val->type) = EEPPOINTER;
1465 DCL_TYPE(val->type) = GPOINTER;
1468 /* is there is a symbol associated then */
1469 /* change the type of the symbol as well*/
1471 val->sym->type = copyLinkChain(val->type);
1472 val->sym->etype = getSpec(val->sym->type);
1480 /* if this function is reentrant or */
1481 /* automatics r 2b stacked then nothing */
1482 if (IS_RENT(func->etype) || options.stackAuto )
1489 /* if a symbolname is not given */
1490 /* synthesize a variable name */
1493 sprintf(val->name,"_%s_PARM_%d",func->name,pNum++);
1494 val->sym = newSymbol(val->name,1);
1495 SPEC_OCLS(val->etype) = port->mem.default_local_map;
1496 val->sym->type = copyLinkChain (val->type);
1497 val->sym->etype = getSpec (val->sym->type);
1498 val->sym->_isparm = 1;
1499 strcpy (val->sym->rname,val->name);
1500 SPEC_STAT(val->etype) = SPEC_STAT(val->sym->etype) =
1501 SPEC_STAT(func->etype);
1502 addSymChain(val->sym);
1505 else /* symbol name given create synth name */ {
1507 sprintf(val->name,"_%s_PARM_%d",func->name,pNum++);
1508 strcpy (val->sym->rname,val->name);
1509 val->sym->_isparm = 1;
1510 SPEC_OCLS(val->etype) = SPEC_OCLS(val->sym->etype) =
1511 (options.model ? xdata : data);
1512 SPEC_STAT(val->etype) = SPEC_STAT(val->sym->etype) =
1513 SPEC_STAT(func->etype);
1519 /*-----------------------------------------------------------------*/
1520 /* isSymbolEqual - compares two symbols return 1 if they match */
1521 /*-----------------------------------------------------------------*/
1522 int isSymbolEqual (symbol *dest, symbol *src)
1524 /* if pointers match then equal */
1528 /* if one of them is null then don't match */
1532 /* if both of them have rname match on rname */
1533 if (dest->rname[0] && src->rname[0])
1534 return (!strcmp(dest->rname,src->rname));
1536 /* otherwise match on name */
1537 return (!strcmp(dest->name,src->name));
1540 /*-----------------------------------------------------------------*/
1541 /* printTypeChain - prints the type chain in human readable form */
1542 /*-----------------------------------------------------------------*/
1543 void printTypeChain (link *type, FILE *of)
1553 if (IS_DECL(type)) {
1554 switch (DCL_TYPE(type)) {
1556 fprintf (of,"function ");
1559 fprintf (of,"_generic * ");
1560 if (DCL_PTR_CONST(type))
1561 fprintf(of,"const ");
1564 fprintf (of,"_code * ");
1565 if (DCL_PTR_CONST(type))
1566 fprintf(of,"const ");
1569 fprintf (of,"_far * ");
1570 if (DCL_PTR_CONST(type))
1571 fprintf(of,"const ");
1574 fprintf (of,"_eeprom * ");
1575 if (DCL_PTR_CONST(type))
1576 fprintf(of,"const ");
1580 fprintf (of,"_near * ");
1581 if (DCL_PTR_CONST(type))
1582 fprintf(of,"const ");
1585 fprintf (of,"_idata *");
1586 if (DCL_PTR_CONST(type))
1587 fprintf(of,"const ");
1590 fprintf (of,"_pdata *");
1591 if (DCL_PTR_CONST(type))
1592 fprintf(of,"const ");
1595 fprintf (of," _unkown *");
1596 if (DCL_PTR_CONST(type))
1597 fprintf(of,"const ");
1601 fprintf (of,"array of ");
1605 if (SPEC_VOLATILE(type))
1606 fprintf (of,"volatile ");
1607 if (SPEC_USIGN(type))
1608 fprintf (of,"unsigned ");
1610 switch (SPEC_NOUN(type)) {
1613 fprintf (of,"long ");
1616 fprintf (of,"short ");
1618 fprintf (of,"int ");
1622 fprintf(of,"char ");
1626 fprintf(of,"void ");
1630 fprintf(of,"float ");
1634 fprintf(of,"struct %s",SPEC_STRUCT(type)->tag);
1638 fprintf(of,"sbit ");
1642 fprintf(of,"bit {%d,%d}",SPEC_BSTR(type),SPEC_BLEN(type));
1655 /*-----------------------------------------------------------------*/
1656 /* cdbTypeInfo - print the type information for debugger */
1657 /*-----------------------------------------------------------------*/
1658 void cdbTypeInfo (link *type,FILE *of)
1660 fprintf(of,"{%d}",getSize(type));
1662 if (IS_DECL(type)) {
1663 switch (DCL_TYPE(type)) {
1689 fprintf (of,"DA%d,",DCL_ELEM(type));
1695 switch (SPEC_NOUN(type)) {
1719 fprintf(of,"ST%s",SPEC_STRUCT(type)->tag);
1727 fprintf(of,"SB%d$%d",SPEC_BSTR(type),SPEC_BLEN(type));
1734 if (SPEC_USIGN(type))
1742 /*-----------------------------------------------------------------*/
1743 /* cdbSymbol - prints a symbol & its type information for debugger */
1744 /*-----------------------------------------------------------------*/
1745 void cdbSymbol ( symbol *sym, FILE *of, int isStructSym, int isFunc)
1757 fprintf(of,"S:"); /* symbol record */
1758 /* if this is not a structure symbol then
1759 we need to figure out the scope information */
1763 if (IS_STATIC(sym->etype))
1764 fprintf(of,"F%s$",moduleName); /* scope is file */
1766 fprintf(of,"G$"); /* scope is global */
1769 /* symbol is local */
1770 fprintf(of,"L%s$",(sym->localof ? sym->localof->name : "-null-"));
1772 fprintf(of,"S$"); /* scope is structure */
1774 /* print the name, & mangled name */
1775 fprintf(of,"%s$%d$%d(",sym->name,
1776 sym->level,sym->block);
1778 cdbTypeInfo(sym->type,of);
1781 /* print the address space */
1782 map = SPEC_OCLS(sym->etype);
1783 fprintf(of,"%c,%d,%d",
1784 (map ? map->dbName : 'Z') ,sym->onStack,SPEC_STAK(sym->etype));
1786 /* if assigned to registers then output register names */
1787 /* if this is a function then print
1788 if is it an interrupt routine & interrupt number
1789 and the register bank it is using */
1791 fprintf(of,",%d,%d,%d",SPEC_INTRTN(sym->etype),
1792 SPEC_INTN(sym->etype),SPEC_BANK(sym->etype));
1793 /* alternate location to find this symbol @ : eg registers
1800 /*-----------------------------------------------------------------*/
1801 /* cdbStruct - print a structure for debugger */
1802 /*-----------------------------------------------------------------*/
1803 void cdbStruct ( structdef *sdef,int block,FILE *of,
1804 int inStruct, char *tag)
1809 /* if block # then must have function scope */
1810 fprintf(of,"F%s$",moduleName);
1811 fprintf(of,"%s[",(tag ? tag : sdef->tag));
1812 for (sym=sdef->fields ; sym ; sym = sym->next) {
1813 fprintf(of,"({%d}",sym->offset);
1814 cdbSymbol(sym,of,TRUE,FALSE);
1822 /*------------------------------------------------------------------*/
1823 /* cdbStructBlock - calls struct printing for a blcks */
1824 /*------------------------------------------------------------------*/
1825 void cdbStructBlock (int block , FILE *of)
1828 bucket **table = StructTab;
1832 /* go thru the entire table */
1833 for ( i = 0 ; i < 256; i++ ) {
1834 for ( chain = table[i]; chain ; chain = chain->next ) {
1835 if (chain->block >= block) {
1836 cdbStruct((structdef *)chain->sym, chain->block ,of,0,NULL);
1842 /*-----------------------------------------------------------------*/
1843 /* powof2 - returns power of two for the number if number is pow 2 */
1844 /*-----------------------------------------------------------------*/
1845 int powof2 (unsigned long num)
1851 if (num & 1) n1s++ ;
1856 if (n1s > 1 || nshifts == 0) return 0;
1857 return nshifts - 1 ;
1871 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
1872 symbol *__muldiv[3][3][2];
1873 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
1874 link *__multypes[3][2];
1875 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
1876 symbol *__conv[2][3][2];
1880 static void _makeRegParam(symbol *sym)
1884 val = sym->args; /* loop thru all the arguments */
1886 /* reset regparm for the port */
1887 (*port->reset_regparms)();
1889 SPEC_REGPARM(val->etype) = 1;
1890 sym->argStack -= getSize(val->type);
1895 /*-----------------------------------------------------------------*/
1896 /* initCSupport - create functions for C support routines */
1897 /*-----------------------------------------------------------------*/
1898 void initCSupport ()
1900 const char *smuldivmod[] = {
1903 const char *sbwd[] = {
1904 "char", "int", "long"
1906 const char *ssu[] = {
1910 int bwd, su, muldivmod, tofrom;
1912 floatType= newFloatLink();
1914 for (bwd = 0; bwd < 3; bwd++) {
1929 __multypes[bwd][0] = l;
1930 __multypes[bwd][1] = copyLinkChain(l);
1931 SPEC_USIGN(__multypes[bwd][1]) = 1;
1934 __fsadd = funcOfType ("__fsadd", floatType, floatType, 2, options.float_rent);
1935 __fssub = funcOfType ("__fssub", floatType, floatType, 2, options.float_rent);
1936 __fsmul = funcOfType ("__fsmul", floatType, floatType, 2, options.float_rent);
1937 __fsdiv = funcOfType ("__fsdiv", floatType, floatType, 2, options.float_rent);
1938 __fseq = funcOfType ("__fseq", CHARTYPE, floatType, 2, options.float_rent);
1939 __fsneq = funcOfType ("__fsneq", CHARTYPE, floatType, 2, options.float_rent);
1940 __fslt = funcOfType ("__fslt", CHARTYPE, floatType, 2, options.float_rent);
1941 __fslteq= funcOfType ("__fslteq", CHARTYPE, floatType, 2, options.float_rent);
1942 __fsgt = funcOfType ("__fsgt", CHARTYPE, floatType, 2, options.float_rent);
1943 __fsgteq= funcOfType ("__fsgteq", CHARTYPE, floatType, 2, options.float_rent);
1945 for (tofrom = 0; tofrom < 2; tofrom++) {
1946 for (bwd = 0; bwd < 3; bwd++) {
1947 for (su = 0; su < 2; su++) {
1949 sprintf(buffer, "__fs2%s%s", ssu[su], sbwd[bwd]);
1950 __conv[tofrom][bwd][su] = funcOfType(buffer, __multypes[bwd][su], floatType, 1, options.float_rent);
1953 sprintf(buffer, "__%s%s2fs", ssu[su], sbwd[bwd]);
1954 __conv[tofrom][bwd][su] = funcOfType(buffer, floatType, __multypes[bwd][su], 1, options.float_rent);
1960 for (muldivmod = 0; muldivmod < 3; muldivmod++) {
1961 for (bwd = 0; bwd < 3; bwd++) {
1962 for (su = 0; su < 2; su++) {
1963 sprintf(buffer, "_%s%s%s",
1964 smuldivmod[muldivmod],
1967 __muldiv[muldivmod][bwd][su] = funcOfType(buffer, __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent);
1968 SPEC_NONBANKED(__muldiv[muldivmod][bwd][su]->etype) = 1;
1969 if (bwd < port->muldiv.force_reg_param_below)
1970 _makeRegParam(__muldiv[muldivmod][bwd][su]);