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/* $OpenBSD: gcc_compat.c,v 1.2 2007/09/15 22:04:38 ray Exp $ */
/*
* Copyright (c) 2004 Anders Magnusson (ragge@ludd.luth.se).
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/*
* Routines to support some of the gcc extensions to C.
*/
#ifdef GCC_COMPAT
#include "pass1.h"
#include "cgram.h"
#include <string.h>
static struct kw {
char *name, *ptr;
int rv;
} kw[] = {
{ "__asm", NULL, C_ASM },
{ "__signed", NULL, 0 },
{ "__inline", NULL, C_FUNSPEC },
{ "__const", NULL, 0 },
{ "__asm__", NULL, C_ASM },
{ NULL, NULL, 0 },
};
void
gcc_init()
{
struct kw *kwp;
for (kwp = kw; kwp->name; kwp++)
kwp->ptr = addname(kwp->name);
}
/*
* See if a string matches a gcc keyword.
*/
int
gcc_keyword(char *str, NODE **n)
{
struct kw *kwp;
int i;
for (i = 0, kwp = kw; kwp->name; kwp++, i++)
if (str == kwp->ptr)
break;
if (kwp->name == NULL)
return 0;
if (kwp->rv)
return kwp->rv;
switch (i) {
case 1: /* __signed */
*n = mkty((TWORD)SIGNED, 0, MKSUE(SIGNED));
return C_TYPE;
case 3: /* __const */
*n = block(QUALIFIER, NIL, NIL, CON, 0, 0);
return C_QUALIFIER;
}
cerror("gcc_keyword");
return 0;
}
static struct ren {
struct ren *next;
char *old, *new;
} *renp;
/*
* Save a name for later renaming of a variable.
*/
void
gcc_rename(struct symtab *sp, char *newname)
{
struct ren *ren = permalloc(sizeof(struct ren));
sp->sflags |= SRENAME;
ren->old = sp->sname;
ren->new = newstring(newname, strlen(newname)+1);
ren->next = renp;
renp = ren;
}
/*
* Get a renamed variable.
*/
char *
gcc_findname(struct symtab *sp)
{
struct ren *w;
if ((sp->sflags & SRENAME) == 0)
return exname(sp->sname);
for (w = renp; w; w = w->next) {
if (w->old == sp->sname)
return exname(w->new);
}
cerror("gcc_findname %s", sp->sname);
return NULL;
}
#endif
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