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Diffstat (limited to '')
| -rw-r--r-- | src/syscall/asm_freebsd_riscv64.s | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/src/syscall/asm_freebsd_riscv64.s b/src/syscall/asm_freebsd_riscv64.s new file mode 100644 index 0000000..dc21f76 --- /dev/null +++ b/src/syscall/asm_freebsd_riscv64.s @@ -0,0 +1,125 @@ +// Copyright 2022 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. + +#include "textflag.h" + +// +// System calls for riscv64, FreeBSD +// + +// func Syscall(trap int64, a1, a2, a3 int64) (r1, r2, err int64) +TEXT ·Syscall(SB),NOSPLIT,$0-56 + CALL runtime·entersyscall(SB) + MOV a1+8(FP), A0 + MOV a2+16(FP), A1 + MOV a3+24(FP), A2 + MOV trap+0(FP), T0 // syscall entry + ECALL + BNE T0, ZERO, err + MOV A0, r1+32(FP) // r1 + MOV A1, r2+40(FP) // r2 + MOV ZERO, err+48(FP) // errno + CALL runtime·exitsyscall(SB) + RET +err: + MOV $-1, T0 + MOV T0, r1+32(FP) // r1 + MOV ZERO, r2+40(FP) // r2 + MOV A0, err+48(FP) // errno + CALL runtime·exitsyscall(SB) + RET + + +// func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr) +TEXT ·Syscall6(SB),NOSPLIT,$0-80 + CALL runtime·entersyscall(SB) + MOV a1+8(FP), A0 + MOV a2+16(FP), A1 + MOV a3+24(FP), A2 + MOV a4+32(FP), A3 + MOV a5+40(FP), A4 + MOV a6+48(FP), A5 + MOV trap+0(FP), T0 // syscall entry + ECALL + BNE T0, ZERO, err + MOV A0, r1+56(FP) // r1 + MOV A1, r2+64(FP) // r2 + MOV ZERO, err+72(FP) // errno + CALL runtime·exitsyscall(SB) + RET +err: + MOV $-1, T0 + MOV T0, r1+56(FP) // r1 + MOV ZERO, r2+64(FP) // r2 + MOV A0, err+72(FP) // errno + CALL runtime·exitsyscall(SB) + RET + +// func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr) +TEXT ·RawSyscall(SB),NOSPLIT,$0-56 + MOV a1+8(FP), A0 + MOV a2+16(FP), A1 + MOV a3+24(FP), A2 + MOV trap+0(FP), T0 // syscall entry + ECALL + BNE T0, ZERO, err + MOV A0, r1+32(FP) // r1 + MOV A1, r2+40(FP) // r2 + MOV ZERO, err+48(FP) // errno + RET +err: + MOV $-1, T0 + MOV T0, r1+32(FP) // r1 + MOV ZERO, r2+40(FP) // r2 + MOV A0, err+48(FP) // errno + RET + +// func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr) +TEXT ·RawSyscall6(SB),NOSPLIT,$0-80 + MOV a1+8(FP), A0 + MOV a2+16(FP), A1 + MOV a3+24(FP), A2 + MOV a4+32(FP), A3 + MOV a5+40(FP), A4 + MOV a6+48(FP), A5 + MOV trap+0(FP), T0 // syscall entry + ECALL + BNE T0, ZERO, err + MOV A0, r1+56(FP) // r1 + MOV A1, r2+64(FP) // r2 + MOV ZERO, err+72(FP) // errno + RET +err: + MOV $-1, T0 + MOV T0, r1+56(FP) // r1 + MOV ZERO, r2+64(FP) // r2 + MOV A0, err+72(FP) // errno + RET + +// Actually Syscall7 +// func Syscall9(num uintptr, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2, err uintptr) +TEXT ·Syscall9(SB),NOSPLIT,$0-104 + CALL runtime·entersyscall(SB) + MOV a1+8(FP), A0 + MOV a2+16(FP), A1 + MOV a3+24(FP), A2 + MOV a4+32(FP), A3 + MOV a5+40(FP), A4 + MOV a6+48(FP), A5 + MOV a7+56(FP), A6 + MOV num+0(FP), T0 // syscall entry + ECALL + BNE T0, ZERO, err + MOV A0, r1+80(FP) // r1 + MOV A1, r2+88(FP) // r2 + MOV ZERO, err+96(FP) // errno + CALL runtime·exitsyscall(SB) + RET +err: + MOV $-1, T0 + MOV T0, r1+80(FP) // r1 + MOV ZERO, r2+88(FP) // r2 + MOV A0, err+96(FP) // errno + CALL runtime·exitsyscall(SB) + RET |