2008-07-26 15:49:21 -06:00
|
|
|
// 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.
|
|
|
|
|
|
|
|
//
|
|
|
|
// System calls for AMD64, Linux
|
|
|
|
//
|
|
|
|
|
2008-07-29 15:44:48 -06:00
|
|
|
// func Syscall(trap int64, a1, a2, a3 int64) (r1, r2, err int64);
|
|
|
|
// Trap # in AX, args in DI SI DX, return in AX DX
|
|
|
|
|
|
|
|
TEXT syscall·Syscall(SB),1,$-8
|
|
|
|
MOVQ 16(SP), DI
|
|
|
|
MOVQ 24(SP), SI
|
|
|
|
MOVQ 32(SP), DX
|
|
|
|
MOVQ 8(SP), AX // syscall entry
|
2008-07-26 15:49:21 -06:00
|
|
|
SYSCALL
|
|
|
|
CMPQ AX, $0xfffffffffffff001
|
2008-07-29 15:44:48 -06:00
|
|
|
JLS 6(PC)
|
|
|
|
MOVQ $-1, 40(SP) // r1
|
|
|
|
MOVQ $0, 48(SP) // r2
|
2008-07-26 15:49:21 -06:00
|
|
|
NEGQ AX
|
2008-07-29 15:44:48 -06:00
|
|
|
MOVQ AX, 56(SP) // errno
|
2008-07-26 15:49:21 -06:00
|
|
|
RET
|
2008-07-29 15:44:48 -06:00
|
|
|
MOVQ AX, 40(SP) // r1
|
|
|
|
MOVQ DX, 48(SP) // r2
|
|
|
|
MOVQ $0, 56(SP) // errno
|
2008-07-26 15:49:21 -06:00
|
|
|
RET
|
|
|
|
|
2008-07-29 15:44:48 -06:00
|
|
|
TEXT syscall·AddrToInt(SB),1,$-8
|
|
|
|
MOVQ 8(SP), AX
|
2008-07-26 15:49:21 -06:00
|
|
|
MOVQ AX, 16(SP)
|
|
|
|
RET
|
|
|
|
|
2008-07-29 16:06:21 -06:00
|
|
|
TEXT syscall·Addr32ToInt(SB),1,$-8
|
|
|
|
MOVQ 8(SP), AX
|
|
|
|
MOVQ AX, 16(SP)
|
|
|
|
RET
|
|
|
|
|
2008-07-29 15:44:48 -06:00
|
|
|
TEXT syscall·StatToInt(SB),1,$-8
|
|
|
|
MOVQ 8(SP), AX
|
|
|
|
MOVQ AX, 16(SP)
|
2008-07-28 14:07:58 -06:00
|
|
|
RET
|