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
|
/* 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)
stw r0,_UC_GREGS+(PT_R0*4)(r3)
stw r1,_UC_GREGS+(PT_R1*4)(r3)
mflr r0
stwu r1,-16(r1)
stw r0,20(r1)
stw r0,_UC_GREGS+(PT_LNK*4)(r3)
stw r0,_UC_GREGS+(PT_NIP*4)(r3)
stw r2,_UC_GREGS+(PT_R2*4)(r3)
stw r4,_UC_GREGS+(PT_R4*4)(r3)
stw r5,_UC_GREGS+(PT_R5*4)(r3)
stw r6,_UC_GREGS+(PT_R6*4)(r3)
stw r7,_UC_GREGS+(PT_R7*4)(r3)
stw r8,_UC_GREGS+(PT_R8*4)(r3)
stw r9,_UC_GREGS+(PT_R9*4)(r3)
stw r10,_UC_GREGS+(PT_R10*4)(r3)
stw r11,_UC_GREGS+(PT_R11*4)(r3)
stw r12,_UC_GREGS+(PT_R12*4)(r3)
stw r13,_UC_GREGS+(PT_R13*4)(r3)
stw r14,_UC_GREGS+(PT_R14*4)(r3)
stw r15,_UC_GREGS+(PT_R15*4)(r3)
stw r16,_UC_GREGS+(PT_R16*4)(r3)
stw r17,_UC_GREGS+(PT_R17*4)(r3)
stw r18,_UC_GREGS+(PT_R18*4)(r3)
stw r19,_UC_GREGS+(PT_R19*4)(r3)
stw r20,_UC_GREGS+(PT_R20*4)(r3)
stw r21,_UC_GREGS+(PT_R21*4)(r3)
stw r22,_UC_GREGS+(PT_R22*4)(r3)
stw r23,_UC_GREGS+(PT_R23*4)(r3)
stw r24,_UC_GREGS+(PT_R24*4)(r3)
stw r25,_UC_GREGS+(PT_R25*4)(r3)
stw r26,_UC_GREGS+(PT_R26*4)(r3)
stw r27,_UC_GREGS+(PT_R27*4)(r3)
stw r28,_UC_GREGS+(PT_R28*4)(r3)
stw r29,_UC_GREGS+(PT_R29*4)(r3)
stw r30,_UC_GREGS+(PT_R30*4)(r3)
stw r31,_UC_GREGS+(PT_R31*4)(r3)
mfctr r0
stw r0,_UC_GREGS+(PT_CTR*4)(r3)
mfxer r0
stw r0,_UC_GREGS+(PT_XER*4)(r3)
mfcr r0
stw r0,_UC_GREGS+(PT_CCR*4)(r3)
/* Set the return value of getcontext to "success". R3 is the only
register whose value is not preserved in the saved context. */
li r0,0
stw r0,_UC_GREGS+(PT_R3*4)(r3)
/* Zero fill fields that can't be set in user state. */
stw r0,_UC_GREGS+(PT_MSR*4)(r3)
stw r0,_UC_GREGS+(PT_MQ*4)(r3)
/* Save the floating-point registers */
stfd fp0,_UC_FREGS+(0*8)(r3)
stfd fp1,_UC_FREGS+(1*8)(r3)
stfd fp2,_UC_FREGS+(2*8)(r3)
stfd fp3,_UC_FREGS+(3*8)(r3)
stfd fp4,_UC_FREGS+(4*8)(r3)
stfd fp5,_UC_FREGS+(5*8)(r3)
stfd fp6,_UC_FREGS+(6*8)(r3)
stfd fp7,_UC_FREGS+(7*8)(r3)
stfd fp8,_UC_FREGS+(8*8)(r3)
stfd fp9,_UC_FREGS+(9*8)(r3)
stfd fp10,_UC_FREGS+(10*8)(r3)
stfd fp11,_UC_FREGS+(11*8)(r3)
stfd fp12,_UC_FREGS+(12*8)(r3)
stfd fp13,_UC_FREGS+(13*8)(r3)
stfd fp14,_UC_FREGS+(14*8)(r3)
stfd fp15,_UC_FREGS+(15*8)(r3)
stfd fp16,_UC_FREGS+(16*8)(r3)
stfd fp17,_UC_FREGS+(17*8)(r3)
stfd fp18,_UC_FREGS+(18*8)(r3)
stfd fp19,_UC_FREGS+(19*8)(r3)
stfd fp20,_UC_FREGS+(20*8)(r3)
stfd fp21,_UC_FREGS+(21*8)(r3)
stfd fp22,_UC_FREGS+(22*8)(r3)
stfd fp23,_UC_FREGS+(23*8)(r3)
stfd fp24,_UC_FREGS+(24*8)(r3)
stfd fp25,_UC_FREGS+(25*8)(r3)
stfd fp26,_UC_FREGS+(26*8)(r3)
stfd fp27,_UC_FREGS+(27*8)(r3)
stfd fp28,_UC_FREGS+(28*8)(r3)
stfd fp29,_UC_FREGS+(29*8)(r3)
mffs fp0
stfd fp30,_UC_FREGS+(30*8)(r3)
stfd fp31,_UC_FREGS+(31*8)(r3)
stfd fp0,_UC_FREGS+(32*8)(r3)
addi r5,r3,_UC_SIGMASK
li r4,0
li r3,SIG_BLOCK
bl JUMPTARGET(sigprocmask)
lwz r0,20(r1)
addi r1,r1,16
mtlr r0
blr
PSEUDO_END(__getcontext)
weak_alias(__getcontext, getcontext)
|
