[mirror_edk2.git] / MdePkg / Library / BaseMemoryLibSse2 / Ia32 / SetMem32.asm

//\r
// Include common header file for this module.\r
//\r
\r
\r
;------------------------------------------------------------------------------\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
    .xmm\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    USES    edi\r
    mov     edx, [esp + 12]\r
    mov     edi, [esp + 8]\r
    xor     ecx, ecx\r
    sub     ecx, edi\r
    and     ecx, 15                     ; ecx + edi aligns on 16-byte boundary\r
    mov     eax, [esp + 16]\r
    jz      @F\r
    shr     ecx, 2\r
    cmp     ecx, edx\r
    cmova   ecx, edx\r
    sub     edx, ecx\r
    rep     stosd\r
@@:\r
    mov     ecx, edx\r
    and     edx, 3\r
    shr     ecx, 2\r
    jz      @SetDwords\r
    movd    xmm0, eax\r
    pshufd  xmm0, xmm0, 0\r
@@:\r
    movntdq [edi], xmm0\r
    add     edi, 16\r
    loop    @B\r
    mfence\r
@SetDwords:\r
    mov     ecx, edx\r
    rep     stosd\r
    mov     eax, [esp + 8]\r
    ret\r
InternalMemSetMem32 ENDP\r
\r
    END\r
Commit	Line	Data
e1f414b6	1	//\r
	2	// Include common header file for this module.\r
	3	//\r
f734a10a	4	\r
e1f414b6	5	\r
	6	;------------------------------------------------------------------------------\r
	7	;\r
	8	; Copyright (c) 2006, Intel Corporation\r
	9	; All rights reserved. This program and the accompanying materials\r
	10	; are licensed and made available under the terms and conditions of the BSD License\r
	11	; which accompanies this distribution. The full text of the license may be found at\r
	12	; http://opensource.org/licenses/bsd-license.php\r
	13	;\r
	14	; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	15	; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	16	;\r
	17	; Module Name:\r
	18	;\r
	19	; SetMem32.asm\r
	20	;\r
	21	; Abstract:\r
	22	;\r
	23	; SetMem32 function\r
	24	;\r
	25	; Notes:\r
	26	;\r
	27	;------------------------------------------------------------------------------\r
	28	\r
	29	.686\r
	30	.model flat,C\r
	31	.xmm\r
	32	.code\r
	33	\r
	34	;------------------------------------------------------------------------------\r
	35	; VOID *\r
	36	; EFIAPI\r
	37	; InternalMemSetMem32 (\r
	38	; IN VOID *Buffer,\r
	39	; IN UINTN Count,\r
	40	; IN UINT32 Value\r
	41	; );\r
	42	;------------------------------------------------------------------------------\r
	43	InternalMemSetMem32 PROC USES edi\r
	44	mov edx, [esp + 12]\r
	45	mov edi, [esp + 8]\r
	46	xor ecx, ecx\r
	47	sub ecx, edi\r
	48	and ecx, 15 ; ecx + edi aligns on 16-byte boundary\r
	49	mov eax, [esp + 16]\r
	50	jz @F\r
	51	shr ecx, 2\r
	52	cmp ecx, edx\r
	53	cmova ecx, edx\r
	54	sub edx, ecx\r
	55	rep stosd\r
	56	@@:\r
	57	mov ecx, edx\r
	58	and edx, 3\r
	59	shr ecx, 2\r
	60	jz @SetDwords\r
	61	movd xmm0, eax\r
	62	pshufd xmm0, xmm0, 0\r
	63	@@:\r
	64	movntdq [edi], xmm0\r
	65	add edi, 16\r
	66	loop @B\r
	67	mfence\r
	68	@SetDwords:\r
69	mov ecx, edx\r
70	rep stosd\r
71	mov eax, [esp + 8]\r
72	ret\r
73	InternalMemSetMem32 ENDP\r
74	\r
75	END\r