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
|
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#include "textflag.h"
//
// System call support for ARM, Darwin
//
// func Syscall(syscall uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr)
TEXT ·Syscall(SB),NOSPLIT,$0-28
BL runtime·entersyscall(SB)
MOVW trap+0(FP), R12
MOVW a1+4(FP), R0
MOVW a2+8(FP), R1
MOVW a3+12(FP), R2
SWI $0x80
BCC ok
MOVW $-1, R1
MOVW R1, r1+16(FP) // r1
MOVW $0, R2
MOVW R2, r2+20(FP) // r2
MOVW R0, err+24(FP) // err
BL runtime·exitsyscall(SB)
RET
ok:
MOVW R0, r1+16(FP) // r1
MOVW R1, r2+20(FP) // r2
MOVW $0, R0
MOVW R0, err+24(FP) // err
BL runtime·exitsyscall(SB)
RET
// func RawSyscall(trap uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr)
TEXT ·RawSyscall(SB),NOSPLIT,$0-28
MOVW trap+0(FP), R12 // syscall entry
MOVW a1+4(FP), R0
MOVW a2+8(FP), R1
MOVW a3+12(FP), R2
SWI $0x80
BCC ok1
MOVW $-1, R1
MOVW R1, r1+16(FP) // r1
MOVW $0, R2
MOVW R2, r2+20(FP) // r2
MOVW R0, err+24(FP) // err
RET
ok1:
MOVW R0, r1+16(FP) // r1
MOVW R1, r2+20(FP) // r2
MOVW $0, R0
MOVW R0, err+24(FP) // err
RET
// func Syscall6(trap uintptr, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
TEXT ·Syscall6(SB),NOSPLIT,$0-40
BL runtime·entersyscall(SB)
MOVW trap+0(FP), R12 // syscall entry
MOVW a1+4(FP), R0
MOVW a2+8(FP), R1
MOVW a3+12(FP), R2
MOVW a4+16(FP), R3
MOVW a5+20(FP), R4
MOVW a6+24(FP), R5
SWI $0x80
BCC ok6
MOVW $-1, R1
MOVW R1, r1+28(FP) // r1
MOVW $0, R2
MOVW R2, r2+32(FP) // r2
MOVW R0, err+36(FP) // err
BL runtime·exitsyscall(SB)
RET
ok6:
MOVW R0, r1+28(FP) // r1
MOVW R1, r2+32(FP) // r2
MOVW $0, R0
MOVW R0, err+36(FP) // err
BL runtime·exitsyscall(SB)
RET
// func RawSyscall6(trap uintptr, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
MOVW trap+0(FP), R12 // syscall entry
MOVW a1+4(FP), R0
MOVW a2+8(FP), R1
MOVW a3+12(FP), R2
MOVW a4+16(FP), R3
MOVW a5+20(FP), R4
MOVW a6+24(FP), R5
SWI $0x80
BCC ok2
MOVW $-1, R1
MOVW R1, r1+28(FP) // r1
MOVW $0, R2
MOVW R2, r2+32(FP) // r2
MOVW R0, err+36(FP) // err
RET
ok2:
MOVW R0, r1+28(FP) // r1
MOVW R1, r2+32(FP) // r2
MOVW $0, R0
MOVW R0, err+36(FP) // err
RET
// Actually Syscall7.
TEXT ·Syscall9(SB),NOSPLIT,$0-52
BL runtime·entersyscall(SB)
MOVW num+0(FP), R12 // syscall entry
MOVW a1+4(FP), R0
MOVW a2+8(FP), R1
MOVW a3+12(FP), R2
MOVW a4+16(FP), R3
MOVW a5+20(FP), R4
MOVW a6+24(FP), R5
MOVW a7+28(FP), R6
SWI $0x80
BCC ok9
MOVW $-1, R1
MOVW R1, r1+40(FP) // r1
MOVW $0, R2
MOVW R2, r2+44(FP) // r2
MOVW R0, err+48(FP) // err
BL runtime·exitsyscall(SB)
RET
ok9:
MOVW R0, r1+40(FP) // r1
MOVW R1, r2+44(FP) // r2
MOVW $0, R0
MOVW R0, err+48(FP) // err
BL runtime·exitsyscall(SB)
RET
|
