79 lines
2.7 KiB
ArmAsm
79 lines
2.7 KiB
ArmAsm
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/* $OpenBSD: setjmp.S,v 1.6 2016/04/28 12:53:47 kettenis Exp $ */
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/* $NetBSD: setjmp.S,v 1.4 2000/08/28 00:45:59 eeh Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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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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/*
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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
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* the last call to
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* setjmp(a)
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* by restoring the previous context.
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* The previous signal state is restored.
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*/
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#include "SYS.h"
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ENTRY(setjmp)
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mov %o0, %o3 /* Save our jmp_buf in %o3 */
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mov 1, %o0 /* SIG_BLOCK */
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mov SYS_sigprocmask, %g1
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clr %o1 /* sigprocmask(SIG_BLOCK, 0) */
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t ST_SYSCALL
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stx %o0, [%o3 + 0x10]
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stx %sp, [%o3 + 0x00] /* store caller's stack pointer */
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stx %o7, [%o3 + 0x08] /* ... and return pc */
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retl
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clr %o0 /* return 0 */
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ENTRY(longjmp)
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save %sp, -CC64FSZ, %sp
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flushw
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mov 3, %o0 /* SIG_SETMASK */
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ldx [%i0 + 0x10], %o1
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mov SYS_sigprocmask, %g1
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t ST_SYSCALL
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ldx [%i0 + 0x00], %fp
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ldx [%i0 + 0x08], %i7
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mov 1, %i0
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movrnz %i1, %i1, %i0 ! compute v ? v : 1
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ret
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restore
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