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
|
/* Save current context.
Copyright (C) 2002 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sysdep.h>
#define __ASSEMBLY__
#include <asm/ptrace.h>
#include "ucontext_i.h"
ENTRY(__getcontext)
std r0,(SIGCONTEXT_GP_REGS+(PT_R0*8))(r3)
std r1,(SIGCONTEXT_GP_REGS+(PT_R1*8))(r3)
mflr r0
std r2,(SIGCONTEXT_GP_REGS+(PT_R2*8))(r3)
std r0,FRAME_LR_SAVE(r1)
std r0,(SIGCONTEXT_GP_REGS+(PT_LNK*8))(r3)
std r0,(SIGCONTEXT_GP_REGS+(PT_NIP*8))(r3)
stdu r1,-128(r1)
std r4,(SIGCONTEXT_GP_REGS+(PT_R4*8))(r3)
std r5,(SIGCONTEXT_GP_REGS+(PT_R5*8))(r3)
std r6,(SIGCONTEXT_GP_REGS+(PT_R6*8))(r3)
std r7,(SIGCONTEXT_GP_REGS+(PT_R7*8))(r3)
std r8,(SIGCONTEXT_GP_REGS+(PT_R8*8))(r3)
std r9,(SIGCONTEXT_GP_REGS+(PT_R9*8))(r3)
std r10,(SIGCONTEXT_GP_REGS+(PT_R10*8))(r3)
std r11,(SIGCONTEXT_GP_REGS+(PT_R11*8))(r3)
std r12,(SIGCONTEXT_GP_REGS+(PT_R12*8))(r3)
std r13,(SIGCONTEXT_GP_REGS+(PT_R13*8))(r3)
std r14,(SIGCONTEXT_GP_REGS+(PT_R14*8))(r3)
std r15,(SIGCONTEXT_GP_REGS+(PT_R15*8))(r3)
std r16,(SIGCONTEXT_GP_REGS+(PT_R16*8))(r3)
std r17,(SIGCONTEXT_GP_REGS+(PT_R17*8))(r3)
std r18,(SIGCONTEXT_GP_REGS+(PT_R18*8))(r3)
std r19,(SIGCONTEXT_GP_REGS+(PT_R19*8))(r3)
std r20,(SIGCONTEXT_GP_REGS+(PT_R20*8))(r3)
std r21,(SIGCONTEXT_GP_REGS+(PT_R21*8))(r3)
std r22,(SIGCONTEXT_GP_REGS+(PT_R22*8))(r3)
std r23,(SIGCONTEXT_GP_REGS+(PT_R23*8))(r3)
std r24,(SIGCONTEXT_GP_REGS+(PT_R24*8))(r3)
std r25,(SIGCONTEXT_GP_REGS+(PT_R25*8))(r3)
std r26,(SIGCONTEXT_GP_REGS+(PT_R26*8))(r3)
std r27,(SIGCONTEXT_GP_REGS+(PT_R27*8))(r3)
std r28,(SIGCONTEXT_GP_REGS+(PT_R28*8))(r3)
std r29,(SIGCONTEXT_GP_REGS+(PT_R29*8))(r3)
std r30,(SIGCONTEXT_GP_REGS+(PT_R30*8))(r3)
std r31,(SIGCONTEXT_GP_REGS+(PT_R31*8))(r3)
mfctr r0
std r0,(SIGCONTEXT_GP_REGS+(PT_CTR*8))(r3)
mfxer r0
std r0,(SIGCONTEXT_GP_REGS+(PT_XER*8))(r3)
mfcr r0
std r0,(SIGCONTEXT_GP_REGS+(PT_CCR*8))(r3)
/* Set the return value of swapcontext to "success". R3 is the only
register whose value is not preserved in the saved context. */
li r0,0
std r0,(SIGCONTEXT_GP_REGS+(PT_R3*8))(r3)
/* Zero fill fields that can't be set in user state or are unused. */
std r0,(SIGCONTEXT_GP_REGS+(PT_MSR*8))(r3)
std r0,(SIGCONTEXT_GP_REGS+(34*8))(r3)
std r0,(SIGCONTEXT_GP_REGS+(PT_SOFTE*8))(r3)
std r0,(SIGCONTEXT_GP_REGS+(40*8))(r3)
std r0,(SIGCONTEXT_GP_REGS+(41*8))(r3)
std r0,(SIGCONTEXT_GP_REGS+(42*8))(r3)
std r0,(SIGCONTEXT_GP_REGS+(PT_RESULT*8))(r3)
/* Set the PT_REGS pointer to the address of sigcontext's gp_regs
field. Struct pt_regs and elf_gregset_t are the same thing.
We kept the regs field for backwards compatibility with
libraries built before we extended sigcontext. */
addi r0,r3,SIGCONTEXT_GP_REGS
std r0,SIGCONTEXT_PT_REGS(r3)
stfd fp0,(SIGCONTEXT_FP_REGS+(PT_R0*8))(r3)
stfd fp1,(SIGCONTEXT_FP_REGS+(PT_R1*8))(r3)
stfd fp2,(SIGCONTEXT_FP_REGS+(PT_R2*8))(r3)
stfd fp3,(SIGCONTEXT_FP_REGS+(PT_R3*8))(r3)
stfd fp4,(SIGCONTEXT_FP_REGS+(PT_R4*8))(r3)
stfd fp5,(SIGCONTEXT_FP_REGS+(PT_R5*8))(r3)
stfd fp6,(SIGCONTEXT_FP_REGS+(PT_R6*8))(r3)
stfd fp7,(SIGCONTEXT_FP_REGS+(PT_R7*8))(r3)
stfd fp8,(SIGCONTEXT_FP_REGS+(PT_R8*8))(r3)
stfd fp9,(SIGCONTEXT_FP_REGS+(PT_R9*8))(r3)
stfd fp10,(SIGCONTEXT_FP_REGS+(PT_R10*8))(r3)
stfd fp11,(SIGCONTEXT_FP_REGS+(PT_R11*8))(r3)
stfd fp12,(SIGCONTEXT_FP_REGS+(PT_R12*8))(r3)
stfd fp13,(SIGCONTEXT_FP_REGS+(PT_R13*8))(r3)
stfd fp14,(SIGCONTEXT_FP_REGS+(PT_R14*8))(r3)
stfd fp15,(SIGCONTEXT_FP_REGS+(PT_R15*8))(r3)
stfd fp16,(SIGCONTEXT_FP_REGS+(PT_R16*8))(r3)
stfd fp17,(SIGCONTEXT_FP_REGS+(PT_R17*8))(r3)
stfd fp18,(SIGCONTEXT_FP_REGS+(PT_R18*8))(r3)
stfd fp19,(SIGCONTEXT_FP_REGS+(PT_R19*8))(r3)
stfd fp20,(SIGCONTEXT_FP_REGS+(PT_R20*8))(r3)
stfd fp21,(SIGCONTEXT_FP_REGS+(PT_R21*8))(r3)
stfd fp22,(SIGCONTEXT_FP_REGS+(PT_R22*8))(r3)
stfd fp23,(SIGCONTEXT_FP_REGS+(PT_R23*8))(r3)
stfd fp24,(SIGCONTEXT_FP_REGS+(PT_R24*8))(r3)
stfd fp25,(SIGCONTEXT_FP_REGS+(PT_R25*8))(r3)
stfd fp26,(SIGCONTEXT_FP_REGS+(PT_R26*8))(r3)
stfd fp27,(SIGCONTEXT_FP_REGS+(PT_R27*8))(r3)
stfd fp28,(SIGCONTEXT_FP_REGS+(PT_R28*8))(r3)
stfd fp29,(SIGCONTEXT_GP_REGS+(PT_R29*8))(r3)
mffs fp0
stfd fp30,(SIGCONTEXT_FP_REGS+(PT_R30*8))(r3)
stfd fp31,(SIGCONTEXT_FP_REGS+(PT_R31*8))(r3)
stfd fp0,(SIGCONTEXT_FP_REGS+(32*8))(r3)
addi r5,r3,UCONTEXT_SIGMASK
li r4,0
li r3,SIG_BLOCK
bl .sigprocmask
nop
ld r0,128+FRAME_LR_SAVE(r1)
addi r1,r1,128
mtlr r0
blr
PSEUDO_END(__getcontext)
weak_alias(__getcontext, getcontext)
|
