xref: /freebsd/sys/arm64/arm64/hyp_stub.S (revision 9768746b)
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 <machine/asm.h>
28
29.macro vempty
30	.align 7
31	1: b 	1b
32.endm
33
34/*
35 * Install a new exception vector table with the base address supplied by the
36 * parameter in register x0.
37 */
38.macro vector_stub_el1h_sync
39	.align 7
40	msr	vbar_el2, x0
41	ERET
42.endm
43
44	.align 11
45	.globl hyp_stub_vectors
46hyp_stub_vectors:
47	vempty			/* Synchronous EL2t */
48	vempty			/* IRQ EL2t */
49	vempty			/* FIQ EL2t */
50	vempty			/* SError EL2t */
51
52	vempty			/* Synchronous EL2h */
53	vempty			/* IRQ EL2h */
54	vempty			/* FIQ EL2h */
55	vempty			/* SError EL2h */
56
57	vector_stub_el1h_sync	/* Synchronous 64-bit EL1 */
58	vempty			/* IRQ 64-bit EL1 */
59	vempty			/* FIQ 64-bit EL1 */
60	vempty			/* SError 64-bit EL1 */
61
62	vempty			/* Synchronous 32-bit EL1 */
63	vempty			/* IRQ 32-bit EL1 */
64	vempty			/* FIQ 32-bit EL1 */
65	vempty			/* SError 32-bit EL1 */
66