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- /* 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)
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