1 files changed, 47 insertions, 0 deletions
diff --git a/src/syscall/asm9_unix2_amd64.s b/src/syscall/asm9_unix2_amd64.s
new file mode 100644
index 0000000..bb4e9db
--- /dev/null
+++ b/src/syscall/asm9_unix2_amd64.s
@@ -0,0 +1,47 @@
+// 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	·Syscall9(SB),NOSPLIT,$32-104
+	NO_LOCAL_POINTERS
+	CALL	runtime·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·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·exitsyscall<ABIInternal>(SB)
+	RET