Text file src/pkg/syscall/asm_darwin_arm64.s
1 // Copyright 2015 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
4
5 #include "textflag.h"
6
7 //
8 // System call support for ARM64, Darwin
9 //
10
11 // func Syscall(trap uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr)
12 TEXT ·Syscall(SB),NOSPLIT,$0-56
13 BL runtime·entersyscall(SB)
14 MOVD trap+0(FP), R16
15 MOVD a1+8(FP), R0
16 MOVD a2+16(FP), R1
17 MOVD a3+24(FP), R2
18 SVC $0x80
19 BCC ok
20 MOVD $-1, R1
21 MOVD R1, r1+32(FP) // r1
22 MOVD ZR, r2+40(FP) // r2
23 MOVD R0, err+48(FP) // err
24 BL runtime·exitsyscall(SB)
25 RET
26 ok:
27 MOVD R0, r1+32(FP) // r1
28 MOVD R1, r2+40(FP) // r2
29 MOVD ZR, err+48(FP) // err
30 BL runtime·exitsyscall(SB)
31 RET
32
33 // func RawSyscall(trap uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr)
34 TEXT ·RawSyscall(SB),NOSPLIT,$0-56
35 MOVD trap+0(FP), R16 // syscall entry
36 MOVD a1+8(FP), R0
37 MOVD a2+16(FP), R1
38 MOVD a3+24(FP), R2
39 SVC $0x80
40 BCC ok
41 MOVD $-1, R1
42 MOVD R1, r1+32(FP) // r1
43 MOVD ZR, r2+40(FP) // r2
44 MOVD R0, err+48(FP) // err
45 RET
46 ok:
47 MOVD R0, r1+32(FP) // r1
48 MOVD R1, r2+40(FP) // r2
49 MOVD ZR, err+48(FP) // err
50 RET
51
52 // func Syscall6(trap uintptr, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
53 TEXT ·Syscall6(SB),NOSPLIT,$0-80
54 BL runtime·entersyscall(SB)
55 MOVD trap+0(FP), R16 // syscall entry
56 MOVD a1+8(FP), R0
57 MOVD a2+16(FP), R1
58 MOVD a3+24(FP), R2
59 MOVD a4+32(FP), R3
60 MOVD a5+40(FP), R4
61 MOVD a6+48(FP), R5
62 SVC $0x80
63 BCC ok
64 MOVD $-1, R1
65 MOVD R1, r1+56(FP) // r1
66 MOVD ZR, r2+64(FP) // r2
67 MOVD R0, err+72(FP) // err
68 BL runtime·exitsyscall(SB)
69 RET
70 ok:
71 MOVD R0, r1+56(FP) // r1
72 MOVD R1, r2+64(FP) // r2
73 MOVD ZR, err+72(FP) // err
74 BL runtime·exitsyscall(SB)
75 RET
76
77 // func RawSyscall6(trap uintptr, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
78 TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
79 MOVD trap+0(FP), R16 // syscall entry
80 MOVD a1+8(FP), R0
81 MOVD a2+16(FP), R1
82 MOVD a3+24(FP), R2
83 MOVD a4+32(FP), R3
84 MOVD a5+40(FP), R4
85 MOVD a6+48(FP), R5
86 SVC $0x80
87 BCC ok
88 MOVD $-1, R1
89 MOVD R1, r1+56(FP) // r1
90 MOVD ZR, r2+64(FP) // r2
91 MOVD R0, err+72(FP) // err
92 RET
93 ok:
94 MOVD R0, r1+56(FP) // r1
95 MOVD R1, r2+64(FP) // r2
96 MOVD ZR, R0
97 MOVD R0, err+72(FP) // err
98 RET
99
100 // Actually Syscall7
101 TEXT ·Syscall9(SB),NOSPLIT,$0-104
102 BL runtime·entersyscall(SB)
103 MOVD num+0(FP), R16 // syscall entry
104 MOVD a1+8(FP), R0
105 MOVD a2+16(FP), R1
106 MOVD a3+24(FP), R2
107 MOVD a4+32(FP), R3
108 MOVD a5+40(FP), R4
109 MOVD a6+48(FP), R5
110 MOVD a7+56(FP), R6
111 //MOVD a8+64(FP), R7
112 //MOVD a9+72(FP), R8
113 SVC $0x80
114 BCC ok
115 MOVD $-1, R1
116 MOVD R1, r1+80(FP) // r1
117 MOVD ZR, r2+88(FP) // r2
118 MOVD R0, err+96(FP) // err
119 BL runtime·exitsyscall(SB)
120 RET
121 ok:
122 MOVD R0, r1+80(FP) // r1
123 MOVD R1, r2+88(FP) // r2
124 MOVD ZR, err+96(FP) // err
125 BL runtime·exitsyscall(SB)
126 RET
127
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