Initial import.

[mirror_edk2.git] / MdePkg / Library / BaseMemoryLibRepStr / x64 / ScanMem64.asm

;------------------------------------------------------------------------------\r
;\r
; Copyright (c) 2006, Intel Corporation\r
; All rights reserved. This program and the accompanying materials\r
; are licensed and made available under the terms and conditions of the BSD License\r
; which accompanies this distribution.  The full text of the license may be found at\r
; http://opensource.org/licenses/bsd-license.php\r
;\r
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
;\r
; Module Name:\r
;\r
;   ScanMem64.Asm\r
;\r
; Abstract:\r
;\r
;   ScanMem64 function\r
;\r
; Notes:\r
;\r
;   The following BaseMemoryLib instances share the same version of this file:\r
;\r
;       BaseMemoryLibRepStr\r
;       BaseMemoryLibMmx\r
;       BaseMemoryLibSse2\r
;\r
;------------------------------------------------------------------------------\r
\r
    .code\r
\r
InternalMemScanMem64    PROC    USES    rdi\r
    mov     rdi, rcx\r
    mov     rax, r8\r
    mov     rcx, rdx\r
    repne   scasq\r
    lea     rax, [rdi - 8]\r
    cmovnz  rax, rcx\r
    ret\r
InternalMemScanMem64    ENDP\r
\r
    END\r