| ##------------------------------------------------------------------------------ | |
| # | |
| # SpeculationBarrier() for AArch64 | |
| # | |
| # Copyright (c) 2019, Linaro Ltd. All rights reserved. | |
| # | |
| # SPDX-License-Identifier: BSD-2-Clause-Patent | |
| # | |
| ##------------------------------------------------------------------------------ | |
| .text | |
| .p2align 2 | |
| GCC_ASM_EXPORT(SpeculationBarrier) | |
| #/** | |
| # Uses as a barrier to stop speculative execution. | |
| # | |
| # Ensures that no later instruction will execute speculatively, until all prior | |
| # instructions have completed. | |
| # | |
| #**/ | |
| #VOID | |
| #EFIAPI | |
| #SpeculationBarrier ( | |
| # VOID | |
| # ); | |
| # | |
| ASM_PFX(SpeculationBarrier): | |
| dsb | |
| isb | |
| bx lr |