1/*-
2 * Copyright (c) 2015-2016 Ruslan Bukin <br@bsdpad.com>
3 * All rights reserved.
4 *
5 * Portions of this software were developed by SRI International and the
6 * University of Cambridge Computer Laboratory under DARPA/AFRL contract
7 * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
8 *
9 * Portions of this software were developed by the University of Cambridge
10 * Computer Laboratory as part of the CTSRD Project, with support from the
11 * UK Higher Education Innovation Fund (HEIF).
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 *    notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 *    notice, this list of conditions and the following disclaimer in the
20 *    documentation and/or other materials provided with the distribution.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#define ENTRY(sym)                                              \
36        .text; .globl sym; .type sym,@function; sym:
37#define END(sym) .size sym, . - sym
38
39
40ENTRY(setjmp)
41	/* Store the stack pointer */
42	sd	sp, (0 * 8)(a0)
43	addi	a0, a0, (1 * 8)
44
45	/* Store the general purpose registers and ra */
46	sd	s0, (0 * 8)(a0)
47	sd	s1, (1 * 8)(a0)
48	sd	s2, (2 * 8)(a0)
49	sd	s3, (3 * 8)(a0)
50	sd	s4, (4 * 8)(a0)
51	sd	s5, (5 * 8)(a0)
52	sd	s6, (6 * 8)(a0)
53	sd	s7, (7 * 8)(a0)
54	sd	s8, (8 * 8)(a0)
55	sd	s9, (9 * 8)(a0)
56	sd	s10, (10 * 8)(a0)
57	sd	s11, (11 * 8)(a0)
58	sd	ra, (12 * 8)(a0)
59	addi	a0, a0, (13 * 8)
60
61	/* Return value */
62	li	a0, 0
63	ret
64END(setjmp)
65
66ENTRY(longjmp)
67	/* Restore the stack pointer */
68	ld	t0, 0(a0)
69	mv	sp, t0
70	addi	a0, a0, (1 * 8)
71
72	/* Restore the general purpose registers and ra */
73	ld	s0, (0 * 8)(a0)
74	ld	s1, (1 * 8)(a0)
75	ld	s2, (2 * 8)(a0)
76	ld	s3, (3 * 8)(a0)
77	ld	s4, (4 * 8)(a0)
78	ld	s5, (5 * 8)(a0)
79	ld	s6, (6 * 8)(a0)
80	ld	s7, (7 * 8)(a0)
81	ld	s8, (8 * 8)(a0)
82	ld	s9, (9 * 8)(a0)
83	ld	s10, (10 * 8)(a0)
84	ld	s11, (11 * 8)(a0)
85	ld	ra, (12 * 8)(a0)
86	addi	a0, a0, (13 * 8)
87
88	/* Load the return value */
89	mv	a0, a1
90	ret
91END(longjmp)
92