1// Copyright 2016 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5//go:build dragonfly || freebsd || netbsd
6
7#include "textflag.h"
8#include "funcdata.h"
9
10//
11// Syscall9 support for AMD64, DragonFly, FreeBSD and NetBSD
12//
13
14// func Syscall9(trap int64, a1, a2, a3, a4, a5, a6, a7, a8, a9 int64) (r1, r2, err int64);
15TEXT	·Syscall9(SB),NOSPLIT,$32-104
16	NO_LOCAL_POINTERS
17	CALL	runtime·entersyscall<ABIInternal>(SB)
18	MOVQ	num+0(FP), AX	// syscall entry
19	MOVQ	a1+8(FP), DI
20	MOVQ	a2+16(FP), SI
21	MOVQ	a3+24(FP), DX
22	MOVQ	a4+32(FP), R10
23	MOVQ	a5+40(FP), R8
24	MOVQ	a6+48(FP), R9
25	MOVQ	a7+56(FP), R11
26	MOVQ	a8+64(FP), R12
27	MOVQ	a9+72(FP), R13
28
29	// only the first 6 arguments can be passed in registers,
30	// the last three should be placed at the top of the stack.
31	MOVQ	R11, 8(SP)	// arg 7
32	MOVQ	R12, 16(SP)	// arg 8
33	MOVQ	R13, 24(SP)	// arg 9
34
35	SYSCALL
36	JCC	ok9
37	MOVQ	$-1, r1+80(FP)	// r1
38	MOVQ	$0, r2+88(FP)	// r2
39	MOVQ	AX, err+96(FP)	// errno
40	CALL	runtime·exitsyscall<ABIInternal>(SB)
41	RET
42ok9:
43	MOVQ	AX, r1+80(FP)	// r1
44	MOVQ	DX, r2+88(FP)	// r2
45	MOVQ	$0, err+96(FP)	// errno
46	CALL	runtime·exitsyscall<ABIInternal>(SB)
47	RET
48