105 lines
3.1 KiB
ArmAsm
105 lines
3.1 KiB
ArmAsm
/* $OpenBSD: setjmp.S,v 1.3 2012/08/22 17:19:34 pascal Exp $ */
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/* $NetBSD: __setjmp14.S,v 1.1 2001/06/19 00:25:02 fvdl Exp $ */
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/*
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* Copyright (c) 2001 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Frank van der Linden for Wasabi Systems, Inc.
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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 for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* 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 WASABI SYSTEMS, INC
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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 <machine/asm.h>
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#include <machine/setjmp.h>
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/*
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* C library -- _setjmp, _longjmp
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*
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* longjmp(a,v)
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* will generate a "return(v)" from the last call to
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* setjmp(a)
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* by restoring registers from the stack.
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* The previous signal state is restored.
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*/
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ENTRY(setjmp)
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pushq %rdi
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xorq %rdi,%rdi
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#ifdef __PIC__
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call PIC_PLT(sigblock)
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#else
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call sigblock
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#endif
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popq %rdi
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movq %rax,(_JB_SIGMASK * 8)(%rdi)
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movq (%rsp),%r11
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movq %rbx,(_JB_RBX * 8)(%rdi)
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movq %rbp,(_JB_RBP * 8)(%rdi)
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movq %r12,(_JB_R12 * 8)(%rdi)
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movq %r13,(_JB_R13 * 8)(%rdi)
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movq %r14,(_JB_R14 * 8)(%rdi)
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movq %r15,(_JB_R15 * 8)(%rdi)
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movq %rsp,(_JB_RSP * 8)(%rdi)
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movq %r11,(_JB_PC * 8)(%rdi)
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2: xorl %eax,%eax
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ret
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END(setjmp)
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ENTRY(longjmp)
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movq %rdi,%r12
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movl %esi,%r8d
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movq (_JB_SIGMASK * 8)(%rdi),%rdi
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pushq %r8
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#ifdef __PIC__
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call PIC_PLT(sigsetmask)
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#else
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call sigsetmask
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#endif
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popq %r8
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movq (_JB_RBX * 8)(%r12),%rbx
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movq (_JB_RBP * 8)(%r12),%rbp
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movq (_JB_R13 * 8)(%r12),%r13
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movq (_JB_R14 * 8)(%r12),%r14
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movq (_JB_R15 * 8)(%r12),%r15
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movq (_JB_RSP * 8)(%r12),%rsp
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movq (_JB_PC * 8)(%r12),%r11
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movq (_JB_R12 * 8)(%r12),%r12
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movl %r8d,%eax
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testl %eax,%eax
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jnz 1f
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incl %eax
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1: movq %r11,0(%rsp)
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ret
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END(longjmp)
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