usr/src/lib/libc/i386/gen/siglongjmp.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
  28 /*      Copyright (c) 1988 AT&T */
  29 /*        All Rights Reserved   */
  30
  31 #pragma ident   "%Z%%M% %I%     %E% SMI"
  32
  33 #pragma weak _siglongjmp = siglongjmp
  34
  35 #include "lint.h"
  36 #include <sys/types.h>
  37 #include <sys/ucontext.h>
  38 #include <setjmp.h>
  39 #include <ucontext.h>
  40
  41 void
  42 siglongjmp(sigjmp_buf env, int val)
  43 {
  44         ucontext_t *ucp = (ucontext_t *)env;
  45
  46         if (val)
  47                 ucp->uc_mcontext.gregs[EAX] = val;
  48         else
  49                 ucp->uc_mcontext.gregs[EAX] = 1;
  50
  51         (void) setcontext(ucp);
  52 }