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
| // +build dragonfly freebsd
|
| // Copyright 2016 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"
|
| //
| // Syscall9 support for AMD64, DragonFly and FreeBSD
| //
|
| // func Syscall9(trap int64, a1, a2, a3, a4, a5, a6, a7, a8, a9 int64) (r1, r2, err int64);
| TEXT ·Syscall9(SB),NOSPLIT,$0-104
| CALL runtime·entersyscall(SB)
| MOVQ num+0(FP), AX // syscall entry
| MOVQ a1+8(FP), DI
| MOVQ a2+16(FP), SI
| MOVQ a3+24(FP), DX
| MOVQ a4+32(FP), R10
| MOVQ a5+40(FP), R8
| MOVQ a6+48(FP), R9
|
| // shift around the last three arguments so they're at the
| // top of the stack when the syscall is called.
| MOVQ a7+56(FP), R11 // arg 7
| MOVQ R11, 8(SP)
| MOVQ a8+64(FP), R11 // arg 8
| MOVQ R11, 16(SP)
| MOVQ a9+72(FP), R11 // arg 9
| MOVQ R11, 24(SP)
|
| SYSCALL
| JCC ok9
| MOVQ $-1, r1+80(FP) // r1
| MOVQ $0, r2+88(FP) // r2
| MOVQ AX, err+96(FP) // errno
| CALL runtime·exitsyscall(SB)
| RET
| ok9:
| MOVQ AX, r1+80(FP) // r1
| MOVQ DX, r2+88(FP) // r2
| MOVQ $0, err+96(FP) // errno
| CALL runtime·exitsyscall(SB)
| RET
|
|
