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