1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) 2017 Theobroma Systems Design und Consulting GmbH
*/
#include <config.h>
#include <asm/macro.h>
#include <linux/linkage.h>
.pushsection .text.setjmp, "ax"
ENTRY(setjmp)
/* Preserve all callee-saved registers and the SP */
stp x19, x20, [x0,#0]
stp x21, x22, [x0,#16]
stp x23, x24, [x0,#32]
stp x25, x26, [x0,#48]
stp x27, x28, [x0,#64]
stp x29, x30, [x0,#80]
mov x2, sp
str x2, [x0, #96]
mov x0, #0
ret
ENDPROC(setjmp)
.popsection
.pushsection .text.longjmp, "ax"
ENTRY(longjmp)
ldp x19, x20, [x0,#0]
ldp x21, x22, [x0,#16]
ldp x23, x24, [x0,#32]
ldp x25, x26, [x0,#48]
ldp x27, x28, [x0,#64]
ldp x29, x30, [x0,#80]
ldr x2, [x0,#96]
mov sp, x2
/* Move the return value in place, but return 1 if passed 0. */
adds x0, xzr, x1
csinc x0, x0, xzr, ne
ret
ENDPROC(longjmp)
.popsection
|