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
|
/* Save current context.
Copyright (C) 2009 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Maciej W. Rozycki <macro@codesourcery.com>.
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 <sys/asm.h>
#include <sys/fpregdef.h>
#include <sys/regdef.h>
#include "ucontext_i.h"
/* int getcontext (ucontext_t *ucp) */
.text
LOCALSZ = 0
MASK = 0x00000000
#ifdef __PIC__
LOCALSZ = 1 /* save gp */
# if _MIPS_SIM != _ABIO32
MASK = 0x10000000
# endif
#endif
FRAMESZ = ((LOCALSZ * SZREG) + ALSZ) & ALMASK
GPOFF = FRAMESZ - (1 * SZREG)
NESTED (__getcontext, FRAMESZ, ra)
.mask MASK, 0
.fmask 0x00000000, 0
#ifdef __PIC__
SETUP_GP
move a2, sp
# define _SP a2
# if _MIPS_SIM != _ABIO32
move a3, gp
# define _GP a3
# endif
PTR_ADDIU sp, -FRAMESZ
SETUP_GP64 (GPOFF, __getcontext)
SAVE_GP (GPOFF)
#else /* ! __PIC__ */
# define _SP sp
# define _GP gp
#endif /* ! __PIC__ */
/* Store a magic flag. */
li v1, 1
REG_S v1, (0 * SZREG + MCONTEXT_GREGS)(a0) /* zero */
REG_S s0, (16 * SZREG + MCONTEXT_GREGS)(a0)
REG_S s1, (17 * SZREG + MCONTEXT_GREGS)(a0)
REG_S s2, (18 * SZREG + MCONTEXT_GREGS)(a0)
REG_S s3, (19 * SZREG + MCONTEXT_GREGS)(a0)
REG_S s4, (20 * SZREG + MCONTEXT_GREGS)(a0)
REG_S s5, (21 * SZREG + MCONTEXT_GREGS)(a0)
REG_S s6, (22 * SZREG + MCONTEXT_GREGS)(a0)
REG_S s7, (23 * SZREG + MCONTEXT_GREGS)(a0)
#if ! defined (__PIC__) || _MIPS_SIM != _ABIO32
REG_S _GP, (28 * SZREG + MCONTEXT_GREGS)(a0)
#endif
REG_S _SP, (29 * SZREG + MCONTEXT_GREGS)(a0)
REG_S fp, (30 * SZREG + MCONTEXT_GREGS)(a0)
REG_S ra, (31 * SZREG + MCONTEXT_GREGS)(a0)
REG_S ra, MCONTEXT_PC(a0)
#ifdef __mips_hard_float
# if _MIPS_SIM == _ABI64
s.d fs0, (24 * SZREG + MCONTEXT_FPREGS)(a0)
s.d fs1, (25 * SZREG + MCONTEXT_FPREGS)(a0)
s.d fs2, (26 * SZREG + MCONTEXT_FPREGS)(a0)
s.d fs3, (27 * SZREG + MCONTEXT_FPREGS)(a0)
s.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0)
s.d fs5, (29 * SZREG + MCONTEXT_FPREGS)(a0)
s.d fs6, (30 * SZREG + MCONTEXT_FPREGS)(a0)
s.d fs7, (31 * SZREG + MCONTEXT_FPREGS)(a0)
# else /* _MIPS_SIM != _ABI64 */
s.d fs0, (20 * SZREG + MCONTEXT_FPREGS)(a0)
s.d fs1, (22 * SZREG + MCONTEXT_FPREGS)(a0)
s.d fs2, (24 * SZREG + MCONTEXT_FPREGS)(a0)
s.d fs3, (26 * SZREG + MCONTEXT_FPREGS)(a0)
s.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0)
s.d fs5, (30 * SZREG + MCONTEXT_FPREGS)(a0)
# endif /* _MIPS_SIM != _ABI64 */
cfc1 v1, fcr31
sw v1, MCONTEXT_FPC_CSR(a0)
#endif /* __mips_hard_float */
/* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */
li a3, _NSIG8
PTR_ADDU a2, a0, UCONTEXT_SIGMASK
move a1, zero
li a0, SIG_BLOCK
li v0, SYS_ify (rt_sigprocmask)
syscall
bnez a3, 99f
#ifdef __PIC__
RESTORE_GP64
PTR_ADDIU sp, FRAMESZ
#endif
move v0, zero
jr ra
99:
#ifdef __PIC__
PTR_LA t9, JUMPTARGET (__syscall_error)
RESTORE_GP64
PTR_ADDIU sp, FRAMESZ
jr t9
#else /* ! __PIC__ */
j JUMPTARGET (__syscall_error)
#endif /* ! __PIC__ */
PSEUDO_END (__getcontext)
weak_alias (__getcontext, getcontext)
|
