| // 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. | |
| //go:build dragonfly || freebsd || netbsd | |
| #include "textflag.h" | |
| #include "funcdata.h" | |
| // | |
| // Syscall9 support for AMD64, DragonFly, FreeBSD and NetBSD | |
| // | |
| // func Syscall9(trap int64, a1, a2, a3, a4, a5, a6, a7, a8, a9 int64) (r1, r2, err int64); | |
| TEXT 路Syscall9(SB),NOSPLIT,$32-104 | |
| NO_LOCAL_POINTERS | |
| CALL runtime路entersyscall<ABIInternal>(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 | |
| MOVQ a7+56(FP), R11 | |
| MOVQ a8+64(FP), R12 | |
| MOVQ a9+72(FP), R13 | |
| // only the first 6 arguments can be passed in registers, | |
| // the last three should be placed at the top of the stack. | |
| MOVQ R11, 8(SP) // arg 7 | |
| MOVQ R12, 16(SP) // arg 8 | |
| MOVQ R13, 24(SP) // arg 9 | |
| SYSCALL | |
| JCC ok9 | |
| MOVQ $-1, r1+80(FP) // r1 | |
| MOVQ $0, r2+88(FP) // r2 | |
| MOVQ AX, err+96(FP) // errno | |
| CALL runtime路exitsyscall<ABIInternal>(SB) | |
| RET | |
| ok9: | |
| MOVQ AX, r1+80(FP) // r1 | |
| MOVQ DX, r2+88(FP) // r2 | |
| MOVQ $0, err+96(FP) // errno | |
| CALL runtime路exitsyscall<ABIInternal>(SB) | |
| RET | |