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| // Copyright 2019 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.
|
| // +build riscv64,!gccgo
|
| #include "textflag.h"
|
| //
| // System calls for linux/riscv64.
| //
| // Where available, just jump to package syscall's implementation of
| // these functions.
|
| TEXT ·Syscall(SB),NOSPLIT,$0-56
| JMP syscall·Syscall(SB)
|
| TEXT ·Syscall6(SB),NOSPLIT,$0-80
| JMP syscall·Syscall6(SB)
|
| TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
| CALL runtime·entersyscall(SB)
| MOV a1+8(FP), A0
| MOV a2+16(FP), A1
| MOV a3+24(FP), A2
| MOV $0, A3
| MOV $0, A4
| MOV $0, A5
| MOV $0, A6
| MOV trap+0(FP), A7 // syscall entry
| ECALL
| MOV A0, r1+32(FP) // r1
| MOV A1, r2+40(FP) // r2
| CALL runtime·exitsyscall(SB)
| RET
|
| TEXT ·RawSyscall(SB),NOSPLIT,$0-56
| JMP syscall·RawSyscall(SB)
|
| TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
| JMP syscall·RawSyscall6(SB)
|
| TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48
| MOV a1+8(FP), A0
| MOV a2+16(FP), A1
| MOV a3+24(FP), A2
| MOV ZERO, A3
| MOV ZERO, A4
| MOV ZERO, A5
| MOV trap+0(FP), A7 // syscall entry
| ECALL
| MOV A0, r1+32(FP)
| MOV A1, r2+40(FP)
| RET
|
|
