| Scott Baker | 8461e15 | 2019-10-01 14:44:30 -0700 | [diff] [blame] | 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 | |
| khenaidoo | d948f77 | 2021-08-11 17:49:24 -0400 | [diff] [blame^] | 5 | //go:build riscv64 && gc |
| 6 | // +build riscv64 |
| 7 | // +build gc |
| Scott Baker | 8461e15 | 2019-10-01 14:44:30 -0700 | [diff] [blame] | 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 | |
| 17 | TEXT ·Syscall(SB),NOSPLIT,$0-56 |
| 18 | JMP syscall·Syscall(SB) |
| 19 | |
| 20 | TEXT ·Syscall6(SB),NOSPLIT,$0-80 |
| 21 | JMP syscall·Syscall6(SB) |
| 22 | |
| 23 | TEXT ·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 |
| Scott Baker | 8461e15 | 2019-10-01 14:44:30 -0700 | [diff] [blame] | 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 | |
| 35 | TEXT ·RawSyscall(SB),NOSPLIT,$0-56 |
| 36 | JMP syscall·RawSyscall(SB) |
| 37 | |
| 38 | TEXT ·RawSyscall6(SB),NOSPLIT,$0-80 |
| 39 | JMP syscall·RawSyscall6(SB) |
| 40 | |
| 41 | TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48 |
| 42 | MOV a1+8(FP), A0 |
| 43 | MOV a2+16(FP), A1 |
| 44 | MOV a3+24(FP), A2 |
| Scott Baker | 8461e15 | 2019-10-01 14:44:30 -0700 | [diff] [blame] | 45 | MOV trap+0(FP), A7 // syscall entry |
| 46 | ECALL |
| 47 | MOV A0, r1+32(FP) |
| 48 | MOV A1, r2+40(FP) |
| 49 | RET |