/*- * Copyright (c) 1980, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint static char sccsid[] = "@(#)flvalue.c 8.1 (Berkeley) 6/6/93"; #endif /* not lint */ #include "whoami.h" #include "0.h" #include "tree.h" #include "opcode.h" #include "objfmt.h" #include "tree_ty.h" #ifdef PC # include "pc.h" # include <pcc.h> #endif PC #include "tmps.h" /* * flvalue generates the code to either pass on a formal routine, * or construct the structure which is the environment for passing. * it tells the difference by looking at the tree it's given. */ struct nl * flvalue( r , formalp ) struct tnode *r; /* T_VAR */ struct nl *formalp; { struct nl *p; struct nl *tempnlp; char *typename; #ifdef PC char extname[ BUFSIZ ]; #endif PC if ( r == TR_NIL ) { return NLNIL; } typename = formalp -> class == FFUNC ? "function":"procedure"; if ( r->tag != T_VAR ) { error("Expression given, %s required for %s parameter %s" , typename , typename , formalp -> symbol ); return NLNIL; } p = lookup(r->var_node.cptr); if (p == NLNIL) { return NLNIL; } switch ( p -> class ) { case FFUNC: case FPROC: if ( r->var_node.qual != TR_NIL ) { error("Formal %s %s cannot be qualified" , typename , p -> symbol ); return NLNIL; } # ifdef OBJ (void) put(2, PTR_RV | bn << 8+INDX, (int)p->value[NL_OFFS]); # endif OBJ # ifdef PC putRV( p -> symbol , bn , p -> value[ NL_OFFS ] , p -> extra_flags , p2type( p ) ); # endif PC return p; case FUNC: case PROC: if ( r->var_node.qual != TR_NIL ) { error("%s %s cannot be qualified" , typename , p -> symbol ); return NLNIL; } if (bn == 0) { error("Built-in %s %s cannot be passed as a parameter" , typename , p -> symbol ); return NLNIL; } /* * allocate space for the thunk */ tempnlp = tmpalloc((long) (sizeof(struct formalrtn)), NLNIL, NOREG); # ifdef OBJ (void) put(2 , O_LV | cbn << 8 + INDX , (int)tempnlp -> value[ NL_OFFS ] ); (void) put(2, O_FSAV | bn << 8, (long)p->value[NL_ENTLOC]); # endif OBJ # ifdef PC putleaf( PCC_ICON , 0 , 0 , PCCM_ADDTYPE( PCCTM_PTR , PCCM_ADDTYPE( PCCTM_FTN , PCCTM_PTR|PCCT_STRTY ) ) , "_FSAV" ); sprintf( extname , "%s" , FORMALPREFIX ); sextname( &extname[ strlen( extname ) ] , p -> symbol , bn ); putleaf( PCC_ICON , 0 , 0 , p2type( p ) , extname ); putleaf( PCC_ICON , bn , 0 , PCCT_INT , (char *) 0 ); putop( PCC_CM , PCCT_INT ); putLV( (char *) 0 , cbn , tempnlp -> value[NL_OFFS] , tempnlp -> extra_flags , PCCT_STRTY ); putop( PCC_CM , PCCT_INT ); putop( PCC_CALL , PCCTM_PTR | PCCT_STRTY ); # endif PC return p; default: error("Variable given, %s required for %s parameter %s" , typename , typename , formalp -> symbol ); return NLNIL; } }