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MdePkg: Replace Opcode with the corresponding instructions.

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REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3790

Replace Opcode with the corresponding instructions.
The code changes have been verified with CompareBuild.py tool, which
can be used to compare the results of two different EDK II builds to
determine if they generate the same binaries.
(tool link: https://github.com/mdkinney/edk2/tree/sandbox/CompareBuild)

Signed-off-by: Jason Lou <yun.lou@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
This commit is contained in:
Jason
2022-01-10 21:46:27 +08:00
committed by mergify[bot]
parent 84338c0d49
commit d3febfd9ad
42 changed files with 116 additions and 175 deletions
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10
MdePkg/Library/BaseMemoryLibMmx/X64/SetMem32.nasm
View File

@@ -1,6 +1,6 @@
;------------------------------------------------------------------------------
;
; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
; Copyright (c) 2006 - 2022, Intel Corporation. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
; Module Name:
@@ -28,20 +28,20 @@
;------------------------------------------------------------------------------
global ASM_PFX(InternalMemSetMem32)
ASM_PFX(InternalMemSetMem32):
DB 0x49, 0xf, 0x6e, 0xc0 ; movd mm0, r8 (Value)
movq mm0, r8
mov rax, rcx ; rax <- Buffer
xchg rcx, rdx ; rcx <- Count rdx <- Buffer
shr rcx, 1 ; rcx <- # of qwords to set
jz @SetDwords
DB 0xf, 0x70, 0xC0, 0x44 ; pshufw mm0, mm0, 44h
pshufw mm0, mm0, 44h
.0:
DB 0xf, 0xe7, 0x2 ; movntq [rdx], mm0
movntq [rdx], mm0
lea rdx, [rdx + 8] ; use "lea" to avoid flag changes
loop .0
mfence
@SetDwords:
jnc .1
DB 0xf, 0x7e, 0x2 ; movd [rdx], mm0
movd [rdx], mm0
.1:
ret