1. Updated function headers for all assembly function

[mirror_edk2.git] / MdePkg / Library / BaseMemoryLibMmx / Ia32 / SetMem32.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
;   SetMem32.asm\r
;\r
; Abstract:\r
;\r
;   SetMem32 function\r
;\r
; Notes:\r
;\r
;------------------------------------------------------------------------------\r
\r
    .686\r
    .model  flat,C\r
    .mmx\r
    .code\r
\r
;------------------------------------------------------------------------------\r
;  VOID *\r
;  EFIAPI\r
;  InternalMemSetMem32 (\r
;    IN VOID   *Buffer,\r
;    IN UINTN  Count,\r
;    IN UINT32 Value\r
;    );\r
;------------------------------------------------------------------------------\r
InternalMemSetMem32 PROC\r
    mov     eax, [esp + 4]              ; eax <- Buffer as return value\r
    mov     ecx, [esp + 8]              ; ecx <- Count\r
    movd    mm0, [esp + 12]             ; mm0 <- Value\r
    shr     ecx, 1                      ; ecx <- number of qwords to set\r
    mov     edx, eax                    ; edx <- Buffer\r
    jz      @SetDwords\r
    movq    mm1, mm0\r
    psllq   mm1, 32\r
    por     mm0, mm1\r
@@:\r
    movq    [edx], mm0\r
    lea     edx, [edx + 8]              ; use "lea" to avoid change in flags\r
    loop    @B\r
@SetDwords:\r
    jnc     @F\r
    movd    [edx], mm0\r
@@:\r
    ret\r
InternalMemSetMem32 ENDP\r
\r
    END\r