53 lines
2.2 KiB
ArmAsm
53 lines
2.2 KiB
ArmAsm
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/* $NetBSD: __sigtramp2.S,v 1.4 2008/04/28 20:22:56 martin Exp $ */
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/*-
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* Copyright (c) 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "SYS.h"
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/*
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* The i386 signal trampoline is invoked only to return from
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* the signal; the kernel calls the signal handler directly.
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*
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* On entry, stack looks like:
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*
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* ucontext structure [12+sizeof(siginfo_t)]
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* siginfo structure [12]
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* pointer to ucontext structure [8]
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* pointer to siginfo structure [4]
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* sp-> signal number [0]
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*/
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NENTRY(__sigtramp_siginfo_2)
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leal 12+128(%esp),%eax /* get address of ucontext */
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movl %eax,4(%esp) /* put it in the argument slot */
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/* fake return address already there */
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SYSTRAP(setcontext) /* do setcontext */
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movl $-1,4(%esp) /* if we return here, something is wrong */
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SYSTRAP(exit) /* exit */
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