| Current Path : /compat/linux/proc/self/root/usr/src/lib/libc/i386/sys/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //compat/linux/proc/self/root/usr/src/lib/libc/i386/sys/getcontext.S |
/*-
* Copyright (c) 2003 Peter Wemm <peter@FreeBSD.org>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/
#include <machine/asm.h>
__FBSDID("$FreeBSD: release/9.1.0/lib/libc/i386/sys/getcontext.S 217106 2011-01-07 16:08:40Z kib $");
#include <SYS.h>
/*
* This has to be magic to handle the multiple returns.
* Otherwise, the setcontext() syscall will return here and we'll
* pop off the return address and go to the *setcontext* call.
*/
.weak _getcontext
.set _getcontext,__sys_getcontext
.weak getcontext
.set getcontext,__sys_getcontext
ENTRY(__sys_getcontext)
movl (%esp),%ecx /* save getcontext return address */
mov $SYS_getcontext,%eax
KERNCALL
jb 1f
addl $4,%esp /* remove stale (setcontext) return address */
jmp *%ecx /* restore return address */
1:
PIC_PROLOGUE
jmp PIC_PLT(HIDENAME(cerror))
END(__sys_getcontext)
.section .note.GNU-stack,"",%progbits