b6cbf7203b
This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
63 lines
2.3 KiB
ArmAsm
63 lines
2.3 KiB
ArmAsm
/* $NetBSD: getcontext.S,v 1.3 2004/03/09 20:21:22 drochner Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2003 Wasabi Systems, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Written by Frank van der Linden for Wasabi Systems, Inc.
|
|
*
|
|
* 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 for the NetBSD Project by
|
|
* Wasabi Systems, Inc.
|
|
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
|
|
* or promote products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
|
|
* 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 "SYS.h"
|
|
|
|
#if defined(SYSLIBC_SCCS) && !defined(lint)
|
|
RCSID("$NetBSD: getcontext.S,v 1.3 2004/03/09 20:21:22 drochner Exp $")
|
|
#endif
|
|
|
|
#ifdef WEAK_ALIAS
|
|
WEAK_ALIAS(getcontext, _getcontext)
|
|
#endif
|
|
|
|
/*
|
|
* 56 == offsetof(ucontext_t, uc_mcontext)
|
|
* 14 == _REG_RAX
|
|
* 21 == _REG_RIP
|
|
* 24 == _REG_URSP
|
|
*/
|
|
|
|
_SYSCALL(_getcontext,getcontext)
|
|
movq (%rsp),%r11
|
|
movq %r11,(56 + 21 * 8)(%rdi)
|
|
leaq 8(%rsp),%r11
|
|
movq %r11,(56 + 24 * 8)(%rdi)
|
|
movq $0,(56 + 14 * 8)(%rdi)
|
|
xorl %eax,%eax
|
|
ret
|