sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

clean up all of eight BaseMemoryLib instances in MdePkg with the following updates:

Browse Source 
1.	Remove .intel_syntax directives in GCC assembly files. All these assembly files have been updated to use the preferred syntax for GAS
2.	Correct the incorrect comments for internal worker functions for SetMemXX() and ScanMemXX(). The Length parameter is actually the counter of 16-bit, 32-bit or 64-bit value. 
3.	Simplify the logic in ZeroMemoryWrapper.c for BaseMemoryLibOptPei instance to remove the conditional statement for zero length. This logic is already covered by worker function InternalMemZeroMem(). 
4.	Cleanup all the Wrapper C files in BaseMemoryLib instances. They are supposed to be shared by all these 8 BaseMemoryLib instances, but are out-of-sync after some maintenance. This patch re-syncs them and makes them exactly the same.
5.	Cleanup MemLibInternal.h so that it is shared by 6 BaseMemoryLib instance except for PeiMemoryLib and UefiMemoryLib.


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9041 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qhuang8
2009-08-11 15:32:16 +00:00
parent ba19956ac3
commit 1fef058f4b
162 changed files with 1087 additions and 1252 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
MdePkg/Library/BaseMemoryLibMmx/CompareMemWrapper.c
View File

@@ -9,9 +9,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

4
MdePkg/Library/BaseMemoryLibMmx/CopyMemWrapper.c
View File

@@ -10,9 +10,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

4
MdePkg/Library/BaseMemoryLibMmx/MemLibGuid.c
View File

@@ -10,9 +10,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

28
MdePkg/Library/BaseMemoryLibMmx/MemLibInternals.h
View File

@@ -8,10 +8,8 @@
BaseMemoryLibRepStr
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -34,8 +32,8 @@
Copy Length bytes from Source to Destination.
@param DestinationBuffer Target of copy
@param SourceBuffer Place to copy from
@param Length Number of bytes to copy
@param SourceBuffer Place to copy from
@param Length Number of bytes to copy
@return Destination
@@ -51,9 +49,9 @@ InternalMemCopyMem (
/**
Set Buffer to Value for Size bytes.
@param Buffer Memory to set.
@param Length Number of bytes to set
@param Value Value of the set operation.
@param Buffer Memory to set.
@param Length Number of bytes to set
@param Value Value of the set operation.
@return Buffer
@@ -70,7 +68,7 @@ InternalMemSetMem (
Fills a target buffer with a 16-bit value, and returns the target buffer.
@param Buffer Pointer to the target buffer to fill.
@param Length Number of bytes in Buffer to fill.
@param Length Count of 16-bit value to fill.
@param Value Value with which to fill Length bytes of Buffer.
@return Buffer
@@ -88,7 +86,7 @@ InternalMemSetMem16 (
Fills a target buffer with a 32-bit value, and returns the target buffer.
@param Buffer Pointer to the target buffer to fill.
@param Length Number of bytes in Buffer to fill.
@param Length Count of 32-bit value to fill.
@param Value Value with which to fill Length bytes of Buffer.
@return Buffer
@@ -106,7 +104,7 @@ InternalMemSetMem32 (
Fills a target buffer with a 64-bit value, and returns the target buffer.
@param Buffer Pointer to the target buffer to fill.
@param Length Number of bytes in Buffer to fill.
@param Length Count of 64-bit value to fill.
@param Value Value with which to fill Length bytes of Buffer.
@return Buffer
@@ -162,7 +160,7 @@ InternalMemCompareMem (
matching 8-bit value in the target buffer.
@param Buffer Pointer to the target buffer to scan.
@param Length Number of bytes in Buffer to scan. Must be non-zero.
@param Length Count of 8-bit value to scan. Must be non-zero.
@param Value Value to search for in the target buffer.
@return Pointer to the first occurrence or NULL if not found.
@@ -181,7 +179,7 @@ InternalMemScanMem8 (
matching 16-bit value in the target buffer.
@param Buffer Pointer to the target buffer to scan.
@param Length Number of bytes in Buffer to scan. Must be non-zero.
@param Length Count of 16-bit value to scan. Must be non-zero.
@param Value Value to search for in the target buffer.
@return Pointer to the first occurrence or NULL if not found.
@@ -200,7 +198,7 @@ InternalMemScanMem16 (
matching 32-bit value in the target buffer.
@param Buffer Pointer to the target buffer to scan.
@param Length Number of bytes in Buffer to scan. Must be non-zero.
@param Length Count of 32-bit value to scan. Must be non-zero.
@param Value Value to search for in the target buffer.
@return Pointer to the first occurrence or NULL if not found.
@@ -219,7 +217,7 @@ InternalMemScanMem32 (
matching 64-bit value in the target buffer.
@param Buffer Pointer to the target buffer to scan.
@param Length Number of bytes in Buffer to scan. Must be non-zero.
@param Length Count of 64-bit value to scan. Must be non-zero.
@param Value Value to search for in the target buffer.
@return Pointer to the first occurrence or NULL if not found.

4
MdePkg/Library/BaseMemoryLibMmx/ScanMem16Wrapper.c
View File

@@ -10,9 +10,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

4
MdePkg/Library/BaseMemoryLibMmx/ScanMem32Wrapper.c
View File

@@ -9,9 +9,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

4
MdePkg/Library/BaseMemoryLibMmx/ScanMem64Wrapper.c
View File

@@ -10,9 +10,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

4
MdePkg/Library/BaseMemoryLibMmx/ScanMem8Wrapper.c
View File

@@ -10,9 +10,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

4
MdePkg/Library/BaseMemoryLibMmx/SetMem16Wrapper.c
View File

@@ -9,9 +9,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

4
MdePkg/Library/BaseMemoryLibMmx/SetMem32Wrapper.c
View File

@@ -9,9 +9,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

4
MdePkg/Library/BaseMemoryLibMmx/SetMem64Wrapper.c
View File

@@ -9,9 +9,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

4
MdePkg/Library/BaseMemoryLibMmx/SetMemWrapper.c
View File

@@ -10,9 +10,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

23
MdePkg/Library/BaseMemoryLibMmx/X64/CompareMem.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -42,19 +42,18 @@
# IN UINTN Length
# );
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemCompareMem)
ASM_PFX(InternalMemCompareMem):
push rsi
push rdi
mov rsi, rcx
mov rdi, rdx
mov rcx, r8
pushq %rsi
pushq %rdi
movq %rcx, %rsi
movq %rdx, %rdi
movq %r8, %rcx
repe cmpsb
movzx rax, byte ptr [rsi - 1]
movzx rdx, byte ptr [rdi - 1]
sub rax, rdx
pop rdi
pop rsi
movzbq -1(%rsi), %rax
movzbq -1(%rdi), %rdx
subq %rdx, %rax
popq %rdi
popq %rsi
ret

47
MdePkg/Library/BaseMemoryLibMmx/X64/CopyMem.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -34,42 +34,41 @@
# IN UINTN Count
# )
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemCopyMem)
ASM_PFX(InternalMemCopyMem):
push rsi
push rdi
mov rsi, rdx # rsi <- Source
mov rdi, rcx # rdi <- Destination
lea r9, [rsi + r8 - 1] # r9 <- End of Source
cmp rsi, rdi
mov rax, rdi # rax <- Destination as return value
pushq %rsi
pushq %rdi
movq %rdx, %rsi # rsi <- Source
movq %rcx, %rdi # rdi <- Destination
leaq -1(%rsi, %r8,), %r9 # r9 <- End of Source
cmpq %rdi, %rsi
movq %rdi, %rax # rax <- Destination as return value
jae L0
cmp r9, rdi
cmpq %rdi, %r9
jae L_CopyBackward # Copy backward if overlapped
L0:
mov rcx, r8
and r8, 7
shr rcx, 3 # rcx <- # of Qwords to copy
movq %r8, %rcx
andq $7, %r8
shrq $3, %rcx # rcx <- # of Qwords to copy
jz L_CopyBytes
movd r10, mm0 # (Save mm0 in r10)
movq %mm0, %r10 # (Save mm0 in r10) ; Why just save 32 bits?
L1:
movq mm0, [rsi]
movntq [rdi], mm0
add rsi, 8
add rdi, 8
movq (%rsi), %mm0
movntq %mm0, (%rdi)
addq $8, %rsi
addq $8, %rdi
loop L1
mfence
movd mm0, r10 # (Restore mm0)
movd %r10, %mm0 # (Restore mm0)
jmp L_CopyBytes
L_CopyBackward:
mov rsi, r9 # rsi <- End of Source
lea rdi, [rdi + r8 - 1] # rdi <- End of Destination
movq %r9, %rsi # rsi <- End of Source
leaq -1(%rdi, %r8,), %rdi # rdi <- End of Destination
std # set direction flag
L_CopyBytes:
mov rcx, r8
movq %r8, %rcx
rep movsb # Copy bytes backward
cld
pop rdi
pop rsi
popq %rdi
popq %rsi
ret

17
MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem16.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -42,16 +42,15 @@
# IN UINT16 Value
# );
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemScanMem16)
ASM_PFX(InternalMemScanMem16):
push rdi
mov rdi, rcx
mov rax, r8
mov rcx, rdx
pushq %rdi
movq %rcx, %rdi
movq %r8, %rax
movq %rdx, %rcx
repne scasw
lea rax, [rdi - 2]
cmovnz rax, rcx
pop rdi
leaq -2(%rdi), %rax
cmovnz %rcx, %rax
popq %rdi
ret

19
MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem32.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -42,16 +42,15 @@
# IN UINT32 Value
# );
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemScanMem32)
ASM_PFX(InternalMemScanMem32):
push rdi
mov rdi, rcx
mov rax, r8
mov rcx, rdx
repne scasd
lea rax, [rdi - 4]
cmovnz rax, rcx
pop rdi
pushq %rdi
movq %rcx, %rdi
movq %r8, %rax
movq %rdx, %rcx
repne scasl
leaq -4(%rdi), %rax
cmovnz %rcx, %rax
popq %rdi
ret

19
MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem64.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -42,15 +42,14 @@
# IN UINT64 Value
# );
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemScanMem64)
ASM_PFX(InternalMemScanMem64):
push rdi
mov rdi, rcx
mov rax, r8
mov rcx, rdx
repne scasq
lea rax, [rdi - 8]
cmovnz rax, rcx
pop rdi
pushq %rdi
movq %rcx, %rdi
movq %r8, %rax
movq %rdx, %rcx
repne scasq
leaq -8(%rdi), %rax
cmovnz %rcx, %rax
popq %rdi
ret

19
MdePkg/Library/BaseMemoryLibMmx/X64/ScanMem8.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -42,16 +42,15 @@
# IN UINT8 Value
# );
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemScanMem8)
ASM_PFX(InternalMemScanMem8):
push rdi
mov rdi, rcx
mov rcx, rdx
mov rax, r8
repne scasb
lea rax, [rdi - 1]
cmovnz rax, rcx # set rax to 0 if not found
pop rdi
pushq %rdi
movq %rcx, %rdi
movq %rdx, %rcx
movq %r8, %rax
repne scasb
leaq -1(%rdi), %rax
cmovnz %rcx, %rax # set rax to 0 if not found
popq %rdi
ret

35
MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -34,29 +34,28 @@
# IN UINT8 Value
# )
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemSetMem)
ASM_PFX(InternalMemSetMem):
push rdi
mov rax, r8
mov ah, al
movq mm0, rax
mov r8, rcx
mov rdi, r8 # rdi <- Buffer
mov rcx, rdx
and edx, 7
shr rcx, 3
push %rdi
movq %r8, %rax
movb %al, %ah
movq %rax, %mm0
movq %rcx, %r8
movq %r8, %rdi # rdi <- Buffer
movq %rdx, %rcx
andq $7, %rdx
shrq $3, %rcx
jz L_SetBytes
pshufw mm0, mm0, 0x0
.byte 0x0f, 0x70, 0x0C0, 0x00
L0:
movntq [rdi], mm0
add rdi, 8
movntq %mm0, (%rdi)
addq $8, %rdi
loop L0
mfence
L_SetBytes:
mov ecx, edx
rep stosb
mov rax, r8
pop rdi
movl %edx, %ecx
rep stosb
movq %r8, %rax
pop %rdi
ret

35
MdePkg/Library/BaseMemoryLibMmx/X64/SetMem16.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -34,28 +34,27 @@
# IN UINT16 Value
# )
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemSetMem16)
ASM_PFX(InternalMemSetMem16):
push rdi
mov rax, r8
movq mm0, rax
mov r8, rcx
mov rdi, r8
mov rcx, rdx
and edx, 3
shr rcx, 2
jz L_SetWords
pshufw mm0, mm0, 0x0
pushq %rdi
movq %r8, %rax
movq %rax, %mm0
movq %rcx, %r8
movq %r8, %rdi
movq %rdx, %rcx
andl $3, %edx
shrq $2, %rcx
jz L_SetWords
.byte 0x0f, 0x70, 0x0C0, 0x00
L0:
movntq [rdi], mm0
add rdi, 8
loop L0
movntq %mm0, (%rdi)
addq $8, %rdi
loop L0
mfence
L_SetWords:
mov ecx, edx
movl %edx, %ecx
rep stosw
mov rax, r8
pop rdi
movq %r8, %rax
popq %rdi
ret

19
MdePkg/Library/BaseMemoryLibMmx/X64/SetMem32.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -34,23 +34,22 @@
# IN UINT32 Value
# );
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemSetMem32)
ASM_PFX(InternalMemSetMem32):
movq mm0, r8 # mm0 <- Value
mov rax, rcx # rax <- Buffer
xchg rcx, rdx # rcx <- Count rdx <- Buffer
shr rcx, 1 # rcx <- # of qwords to set
movq %r8, %mm0 # mm0 <- Value
movq %rcx, %rax # rax <- Buffer
xchgq %rdx, %rcx # rcx <- Count rdx <- Buffer
shrq $1, % rcx # rcx <- # of qwords to set
jz L_SetDwords
pshufw mm0, mm0, 0x44
.byte 0x0f, 0x70, 0x0C0, 0x44
L0:
movntq [rdx], mm0
lea rdx, [rdx + 8] # use "lea" to avoid flag changes
movntq %mm0, (%rdx)
leaq 8(%rdx), %rdx # use "lea" to avoid flag changes
loop L0
mfence
L_SetDwords:
jnc L1
movd [rdx], mm0
movd %mm0, (%rdx)
L1:
ret

13
MdePkg/Library/BaseMemoryLibMmx/X64/SetMem64.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -33,15 +33,14 @@
# IN UINT64 Value
# )
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemSetMem64)
ASM_PFX(InternalMemSetMem64):
movq mm0, r8 #Value
mov rax, rcx #rax <- Buffer
xchg rcx, rdx #rcx <- Count
movq %r8, %mm0 #Value
movw %rcx, %rax #rax <- Buffer
xchg %rdx, %rcx #rcx <- Count
L0:
movntq [rdx], mm0
add rdx, 8
movntq %mm0, (%rdx)
addq $8, %rdx
loop L0
mfence
ret

29
MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -32,27 +32,26 @@
# IN UINTN Count
# );
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemZeroMem)
ASM_PFX(InternalMemZeroMem):
push rdi
mov rdi, rcx
mov rcx, rdx
mov r8, rdi
and edx, 7
shr rcx, 3
pushq %rdi
movq %rcx, %rdi
movq %rdx, %rcx
movq %rdi, %r8
andq $7, %rdx
shrq $3, %rcx
jz L_ZeroBytes
pxor mm0, mm0
pxor %mm0, %mm0
L0:
movntq [rdi], mm0
add rdi, 8
movntq %mm0, (%rdi)
addq $8, %rdi
loop L0
mfence
L_ZeroBytes:
xor eax, eax
mov ecx, edx
xorl %eax, %eax
movl %edx, %ecx
rep stosb
mov rax, r8
pop rdi
movq %r8, %rax
popq %rdi
ret

4
MdePkg/Library/BaseMemoryLibMmx/ZeroMemWrapper.c
View File

@@ -10,9 +10,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008 , Intel Corporation<BR>
Copyright (c) 2006 - 2009 , Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at