| // 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 |