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