xref: /freebsd/sys/arm64/arm64/hyp_stub.S (revision c2e0d56f) 
1/*
2 * Copyright (c) 2017 Alexandru Elisei <alexandru.elisei@gmail.com>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/elf_common.h>
28
29#include <machine/asm.h>
30
31.macro vempty
32	.align 7
33	1: b 	1b
34.endm
35
36/*
37 * Install a new exception vector table with the base address supplied by the
38 * parameter in register x0.
39 */
40.macro vector_stub_el1h_sync
41	.align 7
42	msr	vbar_el2, x0
43	ERET
44.endm
45
46	.align 11
47	.globl hyp_stub_vectors
48hyp_stub_vectors:
49	vempty			/* Synchronous EL2t */
50	vempty			/* IRQ EL2t */
51	vempty			/* FIQ EL2t */
52	vempty			/* SError EL2t */
53
54	vempty			/* Synchronous EL2h */
55	vempty			/* IRQ EL2h */
56	vempty			/* FIQ EL2h */
57	vempty			/* SError EL2h */
58
59	vector_stub_el1h_sync	/* Synchronous 64-bit EL1 */
60	vempty			/* IRQ 64-bit EL1 */
61	vempty			/* FIQ 64-bit EL1 */
62	vempty			/* SError 64-bit EL1 */
63
64	vempty			/* Synchronous 32-bit EL1 */
65	vempty			/* IRQ 32-bit EL1 */
66	vempty			/* FIQ 32-bit EL1 */
67	vempty			/* SError 32-bit EL1 */
68
69GNU_PROPERTY_AARCH64_FEATURE_1_NOTE(GNU_PROPERTY_AARCH64_FEATURE_1_VAL)
70