mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-06 13:14:27 +00:00
50 lines
876 B
ArmAsm
50 lines
876 B
ArmAsm
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2018 Intel Corporation
|
||
|
|
*
|
||
|
|
* See arch/x86/include/asm/setjmp.h for jmp_buf format
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/linkage.h>
|
||
|
|
|
||
|
|
.text
|
||
|
|
.align 8
|
||
|
|
|
||
|
|
ENTRY(setjmp)
|
||
|
|
|
||
|
|
pop %rcx
|
||
|
|
movq %rcx, (%rdi) /* Return address */
|
||
|
|
movq %rsp, 8(%rdi)
|
||
|
|
movq %rbp, 16(%rdi)
|
||
|
|
movq %rbx, 24(%rdi)
|
||
|
|
movq %r12, 32(%rdi)
|
||
|
|
movq %r13, 40(%rdi)
|
||
|
|
movq %r14, 48(%rdi)
|
||
|
|
movq %r15, 56(%rdi)
|
||
|
|
xorq %rax, %rax /* Direct invocation returns 0 */
|
||
|
|
jmpq *%rcx
|
||
|
|
|
||
|
|
ENDPROC(setjmp)
|
||
|
|
|
||
|
|
.align 8
|
||
|
|
|
||
|
|
ENTRY(longjmp)
|
||
|
|
|
||
|
|
movq (%rdi), %rcx /* Return address */
|
||
|
|
movq 8(%rdi), %rsp
|
||
|
|
movq 16(%rdi), %rbp
|
||
|
|
movq 24(%rdi), %rbx
|
||
|
|
movq 32(%rdi), %r12
|
||
|
|
movq 40(%rdi), %r13
|
||
|
|
movq 48(%rdi), %r14
|
||
|
|
movq 56(%rdi), %r15
|
||
|
|
|
||
|
|
movq %rsi, %rax /* Value to be returned by setjmp() */
|
||
|
|
testq %rax, %rax /* cannot be 0 in this case */
|
||
|
|
jnz 1f
|
||
|
|
incq %rax /* Return 1 instead */
|
||
|
|
1:
|
||
|
|
jmpq *%rcx
|
||
|
|
|
||
|
|
ENDPROC(longjmp)
|