183963db80
The portable (ARM) jmp_buf and sigjmp_buf structures are smaller than the native (MIPS) structures so it is not safe to simply call the standard bionic routines. Luckily there is a lot of redundant space in the standard MIPS structures and it is possible to save all of the needed registers in the area provided by the ARM application. Change-Id: I694a90516cdf96d581863e833776092830afe3cc Signed-off-by: Chris Dearman <chris.dearman@imgtec.com> Signed-off-by: Pete Delaney <piet.delaney@imgtec.com> Signed-off-by: Paul Lind <paul.lind@imgtec.com>
78 lines
2.9 KiB
ArmAsm
78 lines
2.9 KiB
ArmAsm
/* Derived from: $OpenBSD: sigsetjmp.S,v 1.5 2005/08/07 16:40:15 espie Exp $ */
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/*-
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* Copyright (c) 1991, 1993, 1995,
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Havard Eidnes.
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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. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <machine/asm.h>
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#include <machine/regnum.h>
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#include "jboffsets.h"
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/*
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* trampolines for sigsetjmp and siglongjmp save and restore mask.
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*/
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FRAMESZ= MKFSIZ(1,1)
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GPOFF= FRAMESZ-2*REGSZ
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LEAF(sigsetjmp_portable, FRAMESZ)
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PTR_SUBU sp, FRAMESZ
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SETUP_GP64(GPOFF, sigsetjmp)
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.set reorder
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REG_S a1, JB_SAVEMASK(a0) # save "savemask"
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bne a1, 0x0, 1f # do saving of signal mask?
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LA t9, _setjmp_portable
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RESTORE_GP64
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PTR_ADDU sp, FRAMESZ
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jr t9
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1: LA t9, setjmp_portable
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RESTORE_GP64
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PTR_ADDU sp, FRAMESZ
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jr t9
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END(sigsetjmp_portable)
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LEAF(siglongjmp_portable, FRAMESZ)
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PTR_SUBU sp, FRAMESZ
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SETUP_GP64(GPOFF, siglongjmp_portable)
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.set reorder
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REG_L t0, JB_SAVEMASK(a0) # get "savemask"
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bne t0, 0x0, 1f # restore signal mask?
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LA t9, _longjmp_portable
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RESTORE_GP64
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PTR_ADDU sp, FRAMESZ
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jr t9
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1:
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LA t9, longjmp_portable
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RESTORE_GP64
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PTR_ADDU sp, FRAMESZ
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jr t9
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END(siglongjmp_portable)
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