1/*-
2 * Copyright (c) 2014 Andrew Turner
3 * Copyright (c) 2014-2015 The FreeBSD Foundation
4 * All rights reserved.
5 *
6 * Portions of this software were developed by Andrew Turner
7 * under sponsorship from the FreeBSD Foundation
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 */
31
32
33#ifdef __aarch64__
34
35#define	ENTRY(sym) \
36	.text; \
37	.globl	sym; \
38	.balign	2; \
39	.type	sym,#function; \
40sym:
41
42#define	END(sym) \
43	.size	sym, . - sym
44
45
46ENTRY(setjmp)
47	/* Store the stack pointer */
48	mov	x8, sp
49	str	x8, [x0], #8
50
51	/* Store the general purpose registers and lr */
52	stp	x19, x20, [x0], #16
53	stp	x21, x22, [x0], #16
54	stp	x23, x24, [x0], #16
55	stp	x25, x26, [x0], #16
56	stp	x27, x28, [x0], #16
57	stp	x29, x30, [x0], #16
58
59	/* Return value */
60	mov	x0, #0
61	ret
62END(setjmp)
63
64ENTRY(longjmp)
65	/* Restore the stack pointer */
66	ldr	x8, [x0], #8
67	mov	sp, x8
68
69	/* Restore the general purpose registers and lr */
70	ldp	x19, x20, [x0], #16
71	ldp	x21, x22, [x0], #16
72	ldp	x23, x24, [x0], #16
73	ldp	x25, x26, [x0], #16
74	ldp	x27, x28, [x0], #16
75	ldp	x29, x30, [x0], #16
76
77	/* Load the return value */
78	mov	x0, x1
79	ret
80END(longjmp)
81
82#ifdef __ELF__
83.section .note.GNU-stack,"",%progbits
84#endif
85
86#endif /* __aarch64__ */
87