71 lines
2.8 KiB
ArmAsm
71 lines
2.8 KiB
ArmAsm
/* $NetBSD: linux_sigcode.S,v 1.2 2001/04/11 19:41:02 manu Exp $ */
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/*
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* Copyright (C) 1995, 1996 TooLs GmbH.
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* All rights reserved.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* The following code is just a copy from sys/arch/powerpc/powerpc/sigcode.S
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* Obviously, there are little chance that it works for Linux emulation, so
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* it will have to be rewritten.
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* Emmanuel Dreyfus <p99dreyf@criens.u-psud.fr>
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*/
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#include <machine/asm.h>
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#include <compat/linux/linux_syscall.h>
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/*
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* This is copied from sys/compat/linux/arch/powerpc/linux_machdep.h
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*/
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#define LINUX__SIGNAL_FRAMESIZE 64
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/*
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* The following code gets copied to the top of the user stack on process
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* execution. It does signal trampolining on signal delivery.
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*
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* On entry r1 points to a struct sigframe at bottom of current stack.
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* All other registers are unchanged.
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*
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* XXX Linux just does this:
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* 0x38007777 li r0,0x7777
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* 0x44000002 sc
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*/
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.globl _C_LABEL(linux_sigcode),_C_LABEL(linux_esigcode)
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_C_LABEL(linux_sigcode):
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addi 1,1,-16 /* reserved space for callee */
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blrl
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addi 3,1,16+LINUX__SIGNAL_FRAMESIZE /* compute &sf_sc */
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li 0,LINUX_SYS_sigreturn
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sc /* linux_sys_sigreturn(scp) */
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li 0,LINUX_SYS_exit
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sc /* linux_sys_exit(errno) */
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_C_LABEL(linux_esigcode):
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