-
Notifications
You must be signed in to change notification settings - Fork 0
/
asm_netbsd_arm.s
127 lines (119 loc) · 2.85 KB
/
asm_netbsd_arm.s
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
// Copyright 2013 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"
#include "funcdata.h"
//
// System call support for ARM, NetBSD
//
// func Syscall(trap int32, a1, a2, a3 int32) (r1, r2, err int32);
// func Syscall6(trap int32, a1, a2, a3, a4, a5, a6 int32) (r1, r2, err int32);
// func Syscall9(trap int32, a1, a2, a3, a4, a5, a6, a7, a8, a9 int64) (r1, r2, err int32)
TEXT ·Syscall(SB),NOSPLIT,$0-28
BL runtime·entersyscall(SB)
MOVW trap+0(FP), R0 // sigcall num
MOVW a1+4(FP), R1 // a1
MOVW a2+8(FP), R2 // a2
MOVW a3+12(FP), R3 // a3
SWI $0 // syscall
MOVW $0, R2
BCS error
MOVW R0, r1+16(FP) // r1
MOVW R1, r2+20(FP) // r2
MOVW R2, err+24(FP) // err
BL runtime·exitsyscall(SB)
RET
error:
MOVW $-1, R3
MOVW R3, r1+16(FP) // r1
MOVW R2, r2+20(FP) // r2
MOVW R0, err+24(FP) // err
BL runtime·exitsyscall(SB)
RET
TEXT ·Syscall6(SB),NOSPLIT,$0-40
BL runtime·entersyscall(SB)
MOVW trap+0(FP), R0 // sigcall num
MOVW a1+4(FP), R1 // a1
MOVW a2+8(FP), R2 // a2
MOVW a3+12(FP), R3 // a3
MOVW R13, R4
MOVW $a4+16(FP), R13 // a4 to a6 are passed on stack
SWI $0 // syscall
MOVW R4, R13
MOVW $0, R2
BCS error6
MOVW R0, r1+28(FP) // r1
MOVW R1, r2+32(FP) // r2
MOVW R2, err+36(FP) // err
BL runtime·exitsyscall(SB)
RET
error6:
MOVW $-1, R3
MOVW R3, r1+28(FP) // r1
MOVW R2, r2+32(FP) // r2
MOVW R0, err+36(FP) // err
BL runtime·exitsyscall(SB)
RET
TEXT ·Syscall9(SB),NOSPLIT,$0-52
BL runtime·entersyscall(SB)
MOVW trap+0(FP), R0 // sigcall num
MOVW a1+4(FP), R1 // a1
MOVW a2+8(FP), R2 // a2
MOVW a3+12(FP), R3 // a3
MOVW R13, R4
MOVW $a4+16(FP), R13 // a4 to a9 are passed on stack
SWI $0 // syscall
MOVW R4, R13
MOVW $0, R2
BCS error9
MOVW R0, r1+40(FP) // r1
MOVW R1, r2+44(FP) // r2
MOVW R2, err+48(FP) // err
BL runtime·exitsyscall(SB)
RET
error9:
MOVW $-1, R3
MOVW R3, r1+40(FP) // r1
MOVW R2, r2+44(FP) // r2
MOVW R0, err+48(FP) // err
BL runtime·exitsyscall(SB)
RET
TEXT ·RawSyscall(SB),NOSPLIT,$0-28
MOVW trap+0(FP), R0 // sigcall num
MOVW a1+4(FP), R1 // a1
MOVW a2+8(FP), R2 // a2
MOVW a3+12(FP), R3 // a3
SWI $0 // syscall
MOVW $0, R2
BCS errorr
MOVW R0, r1+16(FP) // r1
MOVW R1, r2+20(FP) // r2
MOVW R2, err+24(FP) // err
RET
errorr:
MOVW $-1, R3
MOVW R3, r1+16(FP) // r1
MOVW R2, r2+20(FP) // r2
MOVW R0, err+24(FP) // err
RET
TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
MOVW trap+0(FP), R0 // sigcall num
MOVW a1+4(FP), R1 // a1
MOVW a2+8(FP), R2 // a2
MOVW a3+12(FP), R3 // a3
MOVW R13, R4
MOVW $a4+16(FP), R13 // a4 to a9 are passed on stack
SWI $0 // syscall
MOVW R4, R13
MOVW $0, R2
BCS errorr6
MOVW R0, r1+28(FP) // r1
MOVW R1, r2+32(FP) // r2
MOVW R2, err+36(FP) // err
RET
errorr6:
MOVW $-1, R3
MOVW R3, r1+28(FP) // r1
MOVW R2, r2+32(FP) // r2
MOVW R0, err+36(FP) // err
RET