1// Copyright 2019 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 riscv64 && gc
6// +build riscv64
7// +build gc
8
9#include "textflag.h"
10
11//
12// System calls for linux/riscv64.
13//
14// Where available, just jump to package syscall's implementation of
15// these functions.
16
17TEXT ·Syscall(SB),NOSPLIT,$0-56
18	JMP	syscall·Syscall(SB)
19
20TEXT ·Syscall6(SB),NOSPLIT,$0-80
21	JMP	syscall·Syscall6(SB)
22
23TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
24	CALL	runtime·entersyscall(SB)
25	MOV	a1+8(FP), A0
26	MOV	a2+16(FP), A1
27	MOV	a3+24(FP), A2
28	MOV	trap+0(FP), A7	// syscall entry
29	ECALL
30	MOV	A0, r1+32(FP)	// r1
31	MOV	A1, r2+40(FP)	// r2
32	CALL	runtime·exitsyscall(SB)
33	RET
34
35TEXT ·RawSyscall(SB),NOSPLIT,$0-56
36	JMP	syscall·RawSyscall(SB)
37
38TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
39	JMP	syscall·RawSyscall6(SB)
40
41TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48
42	MOV	a1+8(FP), A0
43	MOV	a2+16(FP), A1
44	MOV	a3+24(FP), A2
45	MOV	trap+0(FP), A7	// syscall entry
46	ECALL
47	MOV	A0, r1+32(FP)
48	MOV	A1, r2+40(FP)
49	RET
50