| // Copyright 2026 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" |
| |
| // Read the vector register length in bytes from the vlenb CSR. |
| // May only be called when the vector extension is present. |
| // func readVLENB() uint |
| TEXT ·readVLENB(SB), NOSPLIT|NOFRAME, $0-8 |
| CSRR VLENB, X10 |
| MOV X10, ret+0(FP) |
| RET |
| |
| // func getGORISCV64level() int32 |
| TEXT ·getGORISCV64level(SB), NOSPLIT|NOFRAME, $0-4 |
| #ifdef GORISCV64_rva20u64 |
| MOV $20, X10 |
| #endif |
| #ifdef GORISCV64_rva22u64 |
| MOV $22, X10 |
| #endif |
| #ifdef GORISCV64_rva23u64 |
| MOV $23, X10 |
| #endif |
| MOVW X10, ret+0(FP) |
| RET |
