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
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/* longjmp for ARM.
Copyright (C) 1997-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <bits/setjmp.h>
#include <rtld-global-offsets.h>
#include <arm-features.h>
/* __longjmp(jmpbuf, val) */
ENTRY (__longjmp)
mov ip, r0
movs r0, r1 /* get the return value in place */
it eq
moveq r0, #1 /* can't let setjmp() return zero! */
#ifdef CHECK_SP
sfi_breg ip, \
ldr r4, [\B, #32] /* jmpbuf's sp */
cfi_undefined (r4)
#ifdef PTR_DEMANGLE
PTR_DEMANGLE (r4, r4, a3, a4)
#endif
CHECK_SP (r4)
#endif
sfi_sp sfi_breg ip, \
ldmia \B!, JMP_BUF_REGLIST
#ifdef PTR_DEMANGLE
PTR_DEMANGLE (fp, a4, a3, a2)
ldr a4, [ip], #4
PTR_DEMANGLE2 (a4, a4, a3)
mov sp, a4
ldr a4, [ip], #4
PTR_DEMANGLE2 (lr, a4, a3)
#else
mov fp, a4
ldr sp, [ip], #4
ldr lr, [ip], #4
#endif
cfi_restore (v1)
cfi_restore (v2)
cfi_restore (v3)
cfi_restore (v4)
cfi_restore (v5)
cfi_restore (v6)
cfi_restore (sl)
cfi_restore (fp)
cfi_restore (sp)
cfi_restore (lr)
#if !defined ARM_ASSUME_NO_IWMMXT || defined __SOFTFP__
# define NEED_HWCAP 1
#endif
#ifdef NEED_HWCAP
# ifdef IS_IN_rtld
ldr a2, 1f
ldr a3, .Lrtld_local_ro
0: add a2, pc, a2
add a2, a2, a3
ldr a2, [a2, #RTLD_GLOBAL_RO_DL_HWCAP_OFFSET]
# else
# ifdef PIC
ldr a2, 1f
ldr a3, .Lrtld_global_ro
0: add a2, pc, a2
ldr a2, [a2, a3]
ldr a2, [a2, #RTLD_GLOBAL_RO_DL_HWCAP_OFFSET]
# else
ldr a2, .Lhwcap
ldr a2, [a2, #0]
# endif
# endif
#endif
#ifdef __SOFTFP__
tst a2, #HWCAP_ARM_VFP
beq .Lno_vfp
#endif
/* Restore the VFP registers. */
/* Following instruction is vldmia ip!, {d8-d15}. */
sfi_breg r12, \
ldc p11, cr8, [\B], #64
.Lno_vfp:
#ifndef ARM_ASSUME_NO_IWMMXT
tst a2, #HWCAP_ARM_IWMMXT
beq .Lno_iwmmxt
/* Restore the call-preserved iWMMXt registers. */
/* Following instructions are wldrd wr10, [ip], #8 (etc.) */
sfi_breg r12, \
ldcl p1, cr10, [\B], #8
sfi_breg r12, \
ldcl p1, cr11, [\B], #8
sfi_breg r12, \
ldcl p1, cr12, [\B], #8
sfi_breg r12, \
ldcl p1, cr13, [\B], #8
sfi_breg r12, \
ldcl p1, cr14, [\B], #8
sfi_breg r12, \
ldcl p1, cr15, [\B], #8
.Lno_iwmmxt:
#endif
DO_RET(lr)
#ifdef NEED_HWCAP
# ifdef IS_IN_rtld
1: .long _GLOBAL_OFFSET_TABLE_ - 0b - PC_OFS
.Lrtld_local_ro:
.long C_SYMBOL_NAME(_rtld_local_ro)(GOTOFF)
# else
# ifdef PIC
1: .long _GLOBAL_OFFSET_TABLE_ - 0b - PC_OFS
.Lrtld_global_ro:
.long C_SYMBOL_NAME(_rtld_global_ro)(GOT)
# else
.Lhwcap:
.long C_SYMBOL_NAME(_dl_hwcap)
# endif
# endif
#endif
END (__longjmp)
|
