-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathasm_freebsd_arm.s
130 lines (122 loc) · 2.96 KB
/
asm_freebsd_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
128
129
130
// Copyright 2012 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, FreeBSD
//
// func Syscall(trap, a1, a2, a3 uintptr) (r1, r2, errno uintptr);
// func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, errno uintptr);
// func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2, errno uintptr)
TEXT ·Syscall(SB),NOSPLIT,$0-28
BL runtime·entersyscall(SB)
MOVW trap+0(FP), R7 // syscall number
MOVW a1+4(FP), R0 // a1
MOVW a2+8(FP), R1 // a2
MOVW a3+12(FP), R2 // 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) // errno
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) // errno
BL runtime·exitsyscall(SB)
RET
TEXT ·Syscall6(SB),NOSPLIT,$0-40
BL runtime·entersyscall(SB)
MOVW trap+0(FP), R7 // syscall number
MOVW a1+4(FP), R0 // a1
MOVW a2+8(FP), R1 // a2
MOVW a3+12(FP), R2 // a3
MOVW a4+16(FP), R3 // a4
MOVW R13, R4
MOVW $a5+20(FP), R13 // a5 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) // errno
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) // errno
BL runtime·exitsyscall(SB)
RET
TEXT ·Syscall9(SB),NOSPLIT,$0-52
BL runtime·entersyscall(SB)
MOVW num+0(FP), R7 // syscall number
MOVW a1+4(FP), R0 // a1
MOVW a2+8(FP), R1 // a2
MOVW a3+12(FP), R2 // a3
MOVW a4+16(FP), R3 // a4
MOVW R13, R4
MOVW $a5+20(FP), R13 // a5 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) // errno
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) // errno
BL runtime·exitsyscall(SB)
RET
TEXT ·RawSyscall(SB),NOSPLIT,$0-28
MOVW trap+0(FP), R7 // syscall number
MOVW a1+4(FP), R0 // a1
MOVW a2+8(FP), R1 // a2
MOVW a3+12(FP), R2 // 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) // errno
RET
errorr:
MOVW $-1, R3
MOVW R3, r1+16(FP) // r1
MOVW R2, r2+20(FP) // r2
MOVW R0, err+24(FP) // errno
RET
TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
MOVW trap+0(FP), R7 // syscall number
MOVW a1+4(FP), R0 // a1
MOVW a2+8(FP), R1 // a2
MOVW a3+12(FP), R2 // a3
MOVW a4+16(FP), R3 // a4
MOVW R13, R4
MOVW $a5+20(FP), R13 // a5 to a6 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) // errno
RET
errorr6:
MOVW $-1, R3
MOVW R3, r1+28(FP) // r1
MOVW R2, r2+32(FP) // r2
MOVW R0, err+36(FP) // errno
RET