80 lines
2.7 KiB
ArmAsm
80 lines
2.7 KiB
ArmAsm
/* $OpenBSD: setjmp.S,v 1.7 2023/12/10 16:45:52 deraadt Exp $ */
|
|
/* $NetBSD: setjmp.S,v 1.4 2000/08/28 00:45:59 eeh Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This software was developed by the Computer Systems Engineering group
|
|
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
|
* contributed to Berkeley.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* C library -- setjmp, longjmp
|
|
*
|
|
* longjmp(a,v)
|
|
* will generate a "return(v)" from
|
|
* the last call to
|
|
* setjmp(a)
|
|
* by restoring the previous context.
|
|
* The previous signal state is restored.
|
|
*/
|
|
|
|
#include "SYS.h"
|
|
|
|
ENTRY(setjmp)
|
|
mov %o0, %o3 /* Save our jmp_buf in %o3 */
|
|
|
|
mov 1, %o0 /* SIG_BLOCK */
|
|
mov SYS_sigprocmask, %g1
|
|
clr %o1 /* sigprocmask(SIG_BLOCK, 0) */
|
|
99: t ST_SYSCALL
|
|
PINSYSCALL(SYS_sigprocmask, 99b)
|
|
stx %o0, [%o3 + 0x10]
|
|
|
|
stx %sp, [%o3 + 0x00] /* store caller's stack pointer */
|
|
stx %o7, [%o3 + 0x08] /* ... and return pc */
|
|
retl
|
|
clr %o0 /* return 0 */
|
|
|
|
ENTRY(longjmp)
|
|
save %sp, -CC64FSZ, %sp
|
|
flushw
|
|
|
|
mov 3, %o0 /* SIG_SETMASK */
|
|
ldx [%i0 + 0x10], %o1
|
|
mov SYS_sigprocmask, %g1
|
|
98: t ST_SYSCALL
|
|
PINSYSCALL(SYS_sigprocmask, 98b)
|
|
|
|
ldx [%i0 + 0x00], %fp
|
|
ldx [%i0 + 0x08], %i7
|
|
mov 1, %i0
|
|
movrnz %i1, %i1, %i0 ! compute v ? v : 1
|
|
ret
|
|
restore
|