1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/*
* (C) Copyright 2013
* David Feng <fenghua@phytium.com.cn>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <asm-offsets.h>
#include <config.h>
#include <asm/ptrace.h>
#include <asm/macro.h>
#include <linux/linkage.h>
/*
* Exception vectors.
*/
.align 11
.globl vectors
vectors:
.align 7 /* Current EL Synchronous Thread */
stp x29, x30, [sp, #-16]!
bl _exception_entry
bl do_bad_sync
b exception_exit
.align 7 /* Current EL IRQ Thread */
stp x29, x30, [sp, #-16]!
bl _exception_entry
bl do_bad_irq
b exception_exit
.align 7 /* Current EL FIQ Thread */
stp x29, x30, [sp, #-16]!
bl _exception_entry
bl do_bad_fiq
b exception_exit
.align 7 /* Current EL Error Thread */
stp x29, x30, [sp, #-16]!
bl _exception_entry
bl do_bad_error
b exception_exit
.align 7 /* Current EL Synchronous Handler */
stp x29, x30, [sp, #-16]!
bl _exception_entry
bl do_sync
b exception_exit
.align 7 /* Current EL IRQ Handler */
stp x29, x30, [sp, #-16]!
bl _exception_entry
bl do_irq
b exception_exit
.align 7 /* Current EL FIQ Handler */
stp x29, x30, [sp, #-16]!
bl _exception_entry
bl do_fiq
b exception_exit
.align 7 /* Current EL Error Handler */
stp x29, x30, [sp, #-16]!
bl _exception_entry
bl do_error
b exception_exit
/*
* Enter Exception.
* This will save the processor state that is ELR/X0~X30
* to the stack frame.
*/
_exception_entry:
stp x27, x28, [sp, #-16]!
stp x25, x26, [sp, #-16]!
stp x23, x24, [sp, #-16]!
stp x21, x22, [sp, #-16]!
stp x19, x20, [sp, #-16]!
stp x17, x18, [sp, #-16]!
stp x15, x16, [sp, #-16]!
stp x13, x14, [sp, #-16]!
stp x11, x12, [sp, #-16]!
stp x9, x10, [sp, #-16]!
stp x7, x8, [sp, #-16]!
stp x5, x6, [sp, #-16]!
stp x3, x4, [sp, #-16]!
stp x1, x2, [sp, #-16]!
/* Could be running at EL3/EL2/EL1 */
switch_el x11, 3f, 2f, 1f
3: mrs x1, esr_el3
mrs x2, elr_el3
b 0f
2: mrs x1, esr_el2
mrs x2, elr_el2
b 0f
1: mrs x1, esr_el1
mrs x2, elr_el1
0:
stp x2, x0, [sp, #-16]!
mov x0, sp
ret
exception_exit:
ldp x2, x0, [sp],#16
switch_el x11, 3f, 2f, 1f
3: msr elr_el3, x2
b 0f
2: msr elr_el2, x2
b 0f
1: msr elr_el1, x2
0:
ldp x1, x2, [sp],#16
ldp x3, x4, [sp],#16
ldp x5, x6, [sp],#16
ldp x7, x8, [sp],#16
ldp x9, x10, [sp],#16
ldp x11, x12, [sp],#16
ldp x13, x14, [sp],#16
ldp x15, x16, [sp],#16
ldp x17, x18, [sp],#16
ldp x19, x20, [sp],#16
ldp x21, x22, [sp],#16
ldp x23, x24, [sp],#16
ldp x25, x26, [sp],#16
ldp x27, x28, [sp],#16
ldp x29, x30, [sp],#16
eret
|
