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/* $OpenBSD: setjmp.S,v 1.1 2017/01/11 18:09:24 patrick Exp $ */
/*-
* Copyright (c) 2014 Andrew Turner
* Copyright (c) 2014 The FreeBSD Foundation
* All rights reserved.
*
* Portions of this software were developed by Andrew Turner
* under sponsorship from the FreeBSD Foundation
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
*/
#include "SYS.h"
#include <machine/setjmp.h>
ENTRY(setjmp)
stp x0, x30, [sp, #-16]!
/* Store the signal mask */
add x2, x0, #(_JB_SIGMASK * 8) /* oset */
mov x1, #0 /* set */
mov x0, #1 /* SIG_BLOCK */
SYSTRAP(sigprocmask)
ldp x0, x30, [sp], #16
/* Store the magic value and stack pointer */
ldr x8, .Lmagic
mov x9, sp
stp x8, x9, [x0], #16
/* Store the general purpose registers and lr */
stp x19, x20, [x0], #16
stp x21, x22, [x0], #16
stp x23, x24, [x0], #16
stp x25, x26, [x0], #16
stp x27, x28, [x0], #16
stp x29, x30, [x0], #16
/* Store the vfp registers */
stp d8, d9, [x0], #16
stp d10, d11, [x0], #16
stp d12, d13, [x0], #16
stp d14, d15, [x0]
/* Return value */
mov x0, #0
ret
.align 3
.Lmagic:
.quad _JB_MAGIC_SETJMP
END_STRONG(setjmp)
ENTRY(longjmp)
stp x0, x1, [sp, #-32]!
str x30, [sp, #24]
/* Restore the signal mask */
mov x2, #0 /* oset */
add x1, x0, #(_JB_SIGMASK * 8) /* set */
mov x0, #3 /* SIG_SETMASK */
SYSTRAP(sigprocmask)
ldr x30, [sp, #24]
ldp x0, x1, [sp], #32
/* Check the magic value */
ldr x8, [x0], #8
ldr x9, .Lmagic
cmp x8, x9
b.ne botch
/* Restore the stack pointer */
ldr x8, [x0], #8
mov sp, x8
/* Restore the general purpose registers and lr */
ldp x19, x20, [x0], #16
ldp x21, x22, [x0], #16
ldp x23, x24, [x0], #16
ldp x25, x26, [x0], #16
ldp x27, x28, [x0], #16
ldp x29, x30, [x0], #16
/* Restore the vfp registers */
ldp d8, d9, [x0], #16
ldp d10, d11, [x0], #16
ldp d12, d13, [x0], #16
ldp d14, d15, [x0]
/* Load the return value */
mov x0, x1
ret
botch:
bl _HIDDEN(abort)
END_STRONG(longjmp)
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