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Maurice Ma
56 lines
1.5 KiB
NASM
56 lines
1.5 KiB
NASM
;------------------------------------------------------------------------------
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;
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; Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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; This program and the accompanying materials
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; are licensed and made available under the terms and conditions of the BSD License
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; which accompanies this distribution. The full text of the license may be found at
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; http://opensource.org/licenses/bsd-license.php.
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;
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; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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;
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; Module Name:
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;
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; FlushCacheLineRange.Asm
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;
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; Abstract:
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;
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; FlushCacheLineRange function
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;
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; Notes:
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;
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;------------------------------------------------------------------------------
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SECTION .text
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;------------------------------------------------------------------------------
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; VOID
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; EFIAPI
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; AsmFlushCacheRange (
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; IN VOID *StartAddress,
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; IN UINT32 Length
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; );
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;------------------------------------------------------------------------------
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global ASM_PFX(AsmFlushCacheRange)
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ASM_PFX(AsmFlushCacheRange):
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push ecx
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mov ecx, [esp + 12]
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cmp ecx, 0
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jz FlushExit
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mov eax, [esp + 8]
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add ecx, eax
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dec ecx
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and eax, 0xffffffc0
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or ecx, 0x3f
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sub ecx, eax
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shr ecx, 6
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inc ecx
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FlushNext:
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clflush [eax]
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add eax, 64
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loop FlushNext
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FlushExit:
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pop ecx
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ret
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