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
15 TEXT ·Syscall(SB),NOSPLIT,$0-56
16 JMP syscall·Syscall(SB)
17
18 TEXT ·Syscall6(SB),NOSPLIT,$0-80
19 JMP syscall·Syscall6(SB)
20
21 TEXT ·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 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·exitsyscall(SB)
31 RET
32
33 TEXT ·RawSyscall(SB),NOSPLIT,$0-56
34 JMP syscall·RawSyscall(SB)
35
36 TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
37 JMP syscall·RawSyscall6(SB)
38
39 TEXT ·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
48
View as plain text