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Don Newton7577f072020-01-06 12:41:11 -05001// 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// +build riscv64,!gccgo
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 ·Syscall(SB),NOSPLIT,$0-56
16 JMP syscall·Syscall(SB)
17
18TEXT ·Syscall6(SB),NOSPLIT,$0-80
19 JMP syscall·Syscall6(SB)
20
21TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
22 CALL runtime·entersyscall(SB)
23 MOV a1+8(FP), A0
24 MOV a2+16(FP), A1
25 MOV a3+24(FP), A2
26 MOV $0, A3
27 MOV $0, A4
28 MOV $0, A5
29 MOV $0, A6
30 MOV trap+0(FP), A7 // syscall entry
31 ECALL
32 MOV A0, r1+32(FP) // r1
33 MOV A1, r2+40(FP) // r2
34 CALL runtime·exitsyscall(SB)
35 RET
36
37TEXT ·RawSyscall(SB),NOSPLIT,$0-56
38 JMP syscall·RawSyscall(SB)
39
40TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
41 JMP syscall·RawSyscall6(SB)
42
43TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48
44 MOV a1+8(FP), A0
45 MOV a2+16(FP), A1
46 MOV a3+24(FP), A2
47 MOV ZERO, A3
48 MOV ZERO, A4
49 MOV ZERO, A5
50 MOV trap+0(FP), A7 // syscall entry
51 ECALL
52 MOV A0, r1+32(FP)
53 MOV A1, r2+40(FP)
54 RET