| // +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. |
| |
| // TODO(rsc): Rewrite all nn(SP) references into name+(nn-8)(FP) |
| // so that go vet can check that they are correct. |
| |
| #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 8(SP), AX // syscall entry |
| MOVQ 16(SP), DI |
| MOVQ 24(SP), SI |
| MOVQ 32(SP), DX |
| MOVQ 40(SP), R10 |
| MOVQ 48(SP), R8 |
| MOVQ 56(SP), R9 |
| |
| // shift around the last three arguments so they're at the |
| // top of the stack when the syscall is called. |
| MOVQ 64(SP), R11 // arg 7 |
| MOVQ R11, 8(SP) |
| MOVQ 72(SP), R11 // arg 8 |
| MOVQ R11, 16(SP) |
| MOVQ 80(SP), R11 // arg 9 |
| MOVQ R11, 24(SP) |
| |
| SYSCALL |
| JCC ok9 |
| MOVQ $-1, 88(SP) // r1 |
| MOVQ $0, 96(SP) // r2 |
| MOVQ AX, 104(SP) // errno |
| CALL runtime·exitsyscall(SB) |
| RET |
| ok9: |
| MOVQ AX, 88(SP) // r1 |
| MOVQ DX, 96(SP) // r2 |
| MOVQ $0, 104(SP) // errno |
| CALL runtime·exitsyscall(SB) |
| RET |
