| // Copyright 2009 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" |
| |
| // |
| // System call support for AMD64 unixes |
| // |
| |
| // func Syscall(trap int64, a1, a2, a3 int64) (r1, r2, err int64) |
| // func Syscall6(trap int64, a1, a2, a3, a4, a5, a6 int64) (r1, r2, err int64) |
| // Trap # in AX, args in DI SI DX, return in AX DX |
| |
| TEXT ·Syscall(SB),NOSPLIT,$0-56 |
| CALL runtime·entersyscall<ABIInternal>(SB) |
| MOVQ trap+0(FP), AX // syscall entry |
| MOVQ a1+8(FP), DI |
| MOVQ a2+16(FP), SI |
| MOVQ a3+24(FP), DX |
| SYSCALL |
| JCC ok |
| MOVQ $-1, r1+32(FP) // r1 |
| MOVQ $0, r2+40(FP) // r2 |
| MOVQ AX, err+48(FP) // errno |
| CALL runtime·exitsyscall<ABIInternal>(SB) |
| RET |
| ok: |
| MOVQ AX, r1+32(FP) // r1 |
| MOVQ DX, r2+40(FP) // r2 |
| MOVQ $0, err+48(FP) // errno |
| CALL runtime·exitsyscall<ABIInternal>(SB) |
| RET |
| |
| TEXT ·Syscall6(SB),NOSPLIT,$0-80 |
| CALL runtime·entersyscall<ABIInternal>(SB) |
| MOVQ trap+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 |
| SYSCALL |
| JCC ok6 |
| MOVQ $-1, r1+56(FP) // r1 |
| MOVQ $0, r2+64(FP) // r2 |
| MOVQ AX, err+72(FP) // errno |
| CALL runtime·exitsyscall<ABIInternal>(SB) |
| RET |
| ok6: |
| MOVQ AX, r1+56(FP) // r1 |
| MOVQ DX, r2+64(FP) // r2 |
| MOVQ $0, err+72(FP) // errno |
| CALL runtime·exitsyscall<ABIInternal>(SB) |
| RET |
| |
| TEXT ·RawSyscall(SB),NOSPLIT,$0-56 |
| MOVQ a1+8(FP), DI |
| MOVQ a2+16(FP), SI |
| MOVQ a3+24(FP), DX |
| MOVQ trap+0(FP), AX // syscall entry |
| SYSCALL |
| JCC ok1 |
| MOVQ $-1, r1+32(FP) // r1 |
| MOVQ $0, r2+40(FP) // r2 |
| MOVQ AX, err+48(FP) // errno |
| RET |
| ok1: |
| MOVQ AX, r1+32(FP) // r1 |
| MOVQ DX, r2+40(FP) // r2 |
| MOVQ $0, err+48(FP) // errno |
| RET |
| |
| TEXT ·RawSyscall6(SB),NOSPLIT,$0-80 |
| 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 trap+0(FP), AX // syscall entry |
| SYSCALL |
| JCC ok2 |
| MOVQ $-1, r1+56(FP) // r1 |
| MOVQ $0, r2+64(FP) // r2 |
| MOVQ AX, err+72(FP) // errno |
| RET |
| ok2: |
| MOVQ AX, r1+56(FP) // r1 |
| MOVQ DX, r2+64(FP) // r2 |
| MOVQ $0, err+72(FP) // errno |
| RET |
