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git01.mediatek.com / filogic / uboot / 8623f92edf2426a6082abcf4dd494c34f5b0c9f0 / . / arch / arm / cpu / armv8 / exceptions.S
blob: baf9401e64303d7cc5e3c4ffba8bd4aa077130fa [file] [log] [blame]
David Feng85fd5f12013-12-14 11:47:35 +0800[diff] [blame]1/*
2 * (C) Copyright 2013
3 * David Feng <fenghua@phytium.com.cn>
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8#include <asm-offsets.h>
9#include <config.h>
David Feng85fd5f12013-12-14 11:47:35 +0800[diff] [blame]10#include <asm/ptrace.h>
11#include <asm/macro.h>
12#include <linux/linkage.h>
13
14/*
15 * Enter Exception.
16 * This will save the processor state that is ELR/X0~X30
17 * to the stack frame.
18 */
19.macro exception_entry
20 stp x29, x30, [sp, #-16]!
21 stp x27, x28, [sp, #-16]!
22 stp x25, x26, [sp, #-16]!
23 stp x23, x24, [sp, #-16]!
24 stp x21, x22, [sp, #-16]!
25 stp x19, x20, [sp, #-16]!
26 stp x17, x18, [sp, #-16]!
27 stp x15, x16, [sp, #-16]!
28 stp x13, x14, [sp, #-16]!
29 stp x11, x12, [sp, #-16]!
30 stp x9, x10, [sp, #-16]!
31 stp x7, x8, [sp, #-16]!
32 stp x5, x6, [sp, #-16]!
33 stp x3, x4, [sp, #-16]!
34 stp x1, x2, [sp, #-16]!
35
36 /* Could be running at EL3/EL2/EL1 */
37 switch_el x11, 3f, 2f, 1f
383: mrs x1, esr_el3
39 mrs x2, elr_el3
40 b 0f
412: mrs x1, esr_el2
42 mrs x2, elr_el2
43 b 0f
441: mrs x1, esr_el1
45 mrs x2, elr_el1
460:
47 stp x2, x0, [sp, #-16]!
48 mov x0, sp
49.endm
50
51/*
52 * Exception vectors.
53 */
54 .align 11
55 .globl vectors
56vectors:
57 .align 7
58 b _do_bad_sync /* Current EL Synchronous Thread */
59
60 .align 7
61 b _do_bad_irq /* Current EL IRQ Thread */
62
63 .align 7
64 b _do_bad_fiq /* Current EL FIQ Thread */
65
66 .align 7
67 b _do_bad_error /* Current EL Error Thread */
68
69 .align 7
70 b _do_sync /* Current EL Synchronous Handler */
71
72 .align 7
73 b _do_irq /* Current EL IRQ Handler */
74
75 .align 7
76 b _do_fiq /* Current EL FIQ Handler */
77
78 .align 7
79 b _do_error /* Current EL Error Handler */
80
81
82_do_bad_sync:
83 exception_entry
84 bl do_bad_sync
85
86_do_bad_irq:
87 exception_entry
88 bl do_bad_irq
89
90_do_bad_fiq:
91 exception_entry
92 bl do_bad_fiq
93
94_do_bad_error:
95 exception_entry
96 bl do_bad_error
97
98_do_sync:
99 exception_entry
100 bl do_sync
101
102_do_irq:
103 exception_entry
104 bl do_irq
105
106_do_fiq:
107 exception_entry
108 bl do_fiq
109
110_do_error:
111 exception_entry
112 bl do_error