| johpow01 | 50ccb55 | 2020-11-10 19:22:13 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2021, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <arch.h> |
| 8 | #include <asm_macros.S> |
| 9 | #include <assert_macros.S> |
| 10 | |
| 11 | #ifdef __aarch64__ |
| 12 | |
| 13 | .arch armv8-a+sve |
| 14 | .globl sme_rdvl_1 |
| 15 | .globl sme_try_illegal_instruction |
| 16 | |
| 17 | /* |
| 18 | * uint64_t sme_rdvl_1(void); |
| 19 | * |
| 20 | * Run rdvl instruction with imm #1. |
| 21 | */ |
| 22 | func sme_rdvl_1 |
| 23 | rdvl x0, #1 |
| 24 | ret |
| 25 | endfunc sme_rdvl_1 |
| 26 | |
| 27 | /* |
| 28 | * void sme_try_illegal_instruction(void); |
| 29 | * |
| 30 | * This function tests that illegal instructions are allowed to run when |
| 31 | * FA64 is supported. RDFFR is explicitly stated to be illegal in the SME |
| 32 | * specification section F1.1.2 unless FA64 is supported and enabled. |
| 33 | */ |
| 34 | func sme_try_illegal_instruction |
| 35 | rdffr p0.b |
| 36 | ret |
| 37 | endfunc sme_try_illegal_instruction |
| 38 | |
| 39 | #endif /* __aarch64__ */ |