1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or https://opensource.org/licenses/CDDL-1.0.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
24 */
25
26#if defined(_KERNEL) && defined(__linux__)
27#include <linux/linkage.h>
28#endif
29
30/*
31 * Setjmp and longjmp implement non-local gotos using state vectors
32 * type label_t.
33 */
34#ifdef __x86_64__
35
36#define _ASM
37#include <sys/asm_linkage.h>
38
39ENTRY_ALIGN(setjmp, 8)
40	movq	%rsp, 0(%rdi)
41	movq	%rbp, 8(%rdi)
42	movq	%rbx, 16(%rdi)
43	movq	%r12, 24(%rdi)
44	movq	%r13, 32(%rdi)
45	movq	%r14, 40(%rdi)
46	movq	%r15, 48(%rdi)
47	movq	0(%rsp), %rdx		/* return address */
48	movq	%rdx, 56(%rdi)		/* rip */
49	xorl	%eax, %eax		/* return 0 */
50	RET
51	SET_SIZE(setjmp)
52
53ENTRY_ALIGN(longjmp, 8)
54	movq	0(%rdi), %rsp
55	movq	8(%rdi), %rbp
56	movq	16(%rdi), %rbx
57	movq	24(%rdi), %r12
58	movq	32(%rdi), %r13
59	movq	40(%rdi), %r14
60	movq	48(%rdi), %r15
61	movq	56(%rdi), %rdx		/* return address */
62	movq	%rdx, 0(%rsp)
63	xorl	%eax, %eax
64	incl	%eax			/* return 1 */
65	RET
66	SET_SIZE(longjmp)
67
68#ifdef __ELF__
69.section .note.GNU-stack,"",%progbits
70#endif
71
72#endif /* __x86_64__ */
73