| ;------------------------------------------------------------------------------ | |
| ; | |
| ; Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR> | |
| ; SPDX-License-Identifier: BSD-2-Clause-Patent | |
| ; | |
| ; Module Name: | |
| ; | |
| ; FlushCacheLine.Asm | |
| ; | |
| ; Abstract: | |
| ; | |
| ; AsmFlushCacheLine function | |
| ; | |
| ; Notes: | |
| ; | |
| ;------------------------------------------------------------------------------ | |
| SECTION .text | |
| ;------------------------------------------------------------------------------ | |
| ; VOID * | |
| ; EFIAPI | |
| ; AsmFlushCacheLine ( | |
| ; IN VOID *LinearAddress | |
| ; ); | |
| ;------------------------------------------------------------------------------ | |
| global ASM_PFX(AsmFlushCacheLine) | |
| ASM_PFX(AsmFlushCacheLine): | |
| ; | |
| ; If the CPU does not support CLFLUSH instruction, | |
| ; then promote flush range to flush entire cache. | |
| ; | |
| mov eax, 1 | |
| push ebx | |
| cpuid | |
| pop ebx | |
| mov eax, [esp + 4] | |
| test edx, BIT19 | |
| jz .0 | |
| clflush [eax] | |
| ret | |
| .0: | |
| wbinvd | |
| ret | |