| // +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. |
| // note that we are scribbling over the Go arguments now. |
| MOVQ SP, CX // hide (SP) writes from vet |
| MOVQ a7+56(FP), R11 // arg 7 |
| MOVQ R11, 8(CX) |
| MOVQ a8+64(FP), R11 // arg 8 |
| MOVQ R11, 16(CX) |
| MOVQ a9+72(FP), R11 // arg 9 |
| MOVQ R11, 24(CX) |
| |
| 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 |
