-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathasm_darwin_arm64.s
127 lines (119 loc) · 2.77 KB
/
asm_darwin_arm64.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
// Copyright 2015 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 ARM64, Darwin
//
// func Syscall(syscall uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr)
TEXT ·Syscall(SB),NOSPLIT,$0-56
BL runtime·entersyscall(SB)
MOVD syscall+0(FP), R16
MOVD a1+8(FP), R0
MOVD a2+16(FP), R1
MOVD a3+24(FP), R2
SVC $0x80
BCC ok
MOVD $-1, R1
MOVD R1, r1+32(FP) // r1
MOVD ZR, r2+40(FP) // r2
MOVD R0, errno+48(FP) // errno
BL runtime·exitsyscall(SB)
RET
ok:
MOVD R0, r1+32(FP) // r1
MOVD R1, r2+40(FP) // r2
MOVD ZR, errno+48(FP) // errno
BL runtime·exitsyscall(SB)
RET
// func RawSyscall(trap uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr)
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
MOVD syscall+0(FP), R16 // syscall entry
MOVD a1+8(FP), R0
MOVD a2+16(FP), R1
MOVD a3+24(FP), R2
SVC $0x80
BCC ok
MOVD $-1, R1
MOVD R1, r1+32(FP) // r1
MOVD ZR, r2+40(FP) // r2
MOVD R0, errno+48(FP) // errno
RET
ok:
MOVD R0, r1+32(FP) // r1
MOVD R1, r2+40(FP) // r2
MOVD ZR, errno+48(FP) // errno
RET
// func Syscall6(trap uintptr, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
TEXT ·Syscall6(SB),NOSPLIT,$0-80
BL runtime·entersyscall(SB)
MOVD syscall+0(FP), R16 // syscall entry
MOVD a1+8(FP), R0
MOVD a2+16(FP), R1
MOVD a3+24(FP), R2
MOVD a4+32(FP), R3
MOVD a5+40(FP), R4
MOVD a6+48(FP), R5
SVC $0x80
BCC ok
MOVD $-1, R1
MOVD R1, r1+56(FP) // r1
MOVD ZR, r2+64(FP) // r2
MOVD R0, errno+72(FP) // errno
BL runtime·exitsyscall(SB)
RET
ok:
MOVD R0, r1+56(FP) // r1
MOVD R1, r2+64(FP) // r2
MOVD ZR, errno+72(FP) // errno
BL runtime·exitsyscall(SB)
RET
// func RawSyscall6(trap uintptr, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
MOVD trap+0(FP), R16 // syscall entry
MOVD a1+8(FP), R0
MOVD a2+16(FP), R1
MOVD a3+24(FP), R2
MOVD a4+32(FP), R3
MOVD a5+40(FP), R4
MOVD a6+48(FP), R5
SVC $0x80
BCC ok
MOVD $-1, R1
MOVD R1, r1+56(FP) // r1
MOVD ZR, r2+64(FP) // r2
MOVD R0, errno+72(FP) // errno
RET
ok:
MOVD R0, r1+56(FP) // r1
MOVD R1, r2+64(FP) // r2
MOVD ZR, R0
MOVD R0, errno+72(FP) // errno
RET
// Actually Syscall7
TEXT ·Syscall9(SB),NOSPLIT,$0-104
BL runtime·entersyscall(SB)
MOVD syscall+0(FP), R16 // syscall entry
MOVD a1+8(FP), R0
MOVD a2+16(FP), R1
MOVD a3+24(FP), R2
MOVD a4+32(FP), R3
MOVD a5+40(FP), R4
MOVD a6+48(FP), R5
MOVD a7+56(FP), R6
//MOVD a8+64(FP), R7
//MOVD a9+72(FP), R8
SVC $0x80
BCC ok
MOVD $-1, R1
MOVD R1, r1+80(FP) // r1
MOVD ZR, r2+88(FP) // r2
MOVD R0, errno+96(FP) // errno
BL runtime·exitsyscall(SB)
RET
ok:
MOVD R0, r1+80(FP) // r1
MOVD R1, r2+88(FP) // r2
MOVD ZR, errno+96(FP) // errno
BL runtime·exitsyscall(SB)
RET