setjmp.s revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#if defined(__lint)
#include <setjmp.h>
#endif
#include <sys/asm_linkage.h>
/*
* longjmp(env, val)
* will generate a "return(val)" from
* the last call to
* setjmp(env)
* by restoring registers ip, sp, bp, bx, si, and di from 'env'
* and doing a return.
*
* entry reg offset from (%si)
* env[0] = %ebx 0 / register variables
* env[1] = %esi 4
* env[2] = %edi 8
* env[3] = %ebp 12 / stack frame
* env[4] = %esp 16
* env[5] = %eip 20
*/
#if defined(__lint)
/* ARGSUSED */
int
{
return (0);
}
/* ARGSUSED */
int
{
return (0);
}
#else /* __lint */
popl %edx / return address
movl %esp,16(%eax) / save caller's esp
#endif /* __lint */
#if defined(__lint)
/* ARGSUSED */
void
{
}
/* ARGSUSED */
void
{
}
#else /* __lint */
movl 16(%edx),%esp / restore caller's esp
.ret:
#endif /* __lint */