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// 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