Change name.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5981 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
54
MdePkg/Library/BaseMemoryLibOptDxe/X64/CompareMem.asm
Normal file
54
MdePkg/Library/BaseMemoryLibOptDxe/X64/CompareMem.asm
Normal file
@@ -0,0 +1,54 @@
|
||||
;------------------------------------------------------------------------------
|
||||
;
|
||||
; Copyright (c) 2006, 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
|
||||
; http://opensource.org/licenses/bsd-license.php
|
||||
;
|
||||
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||||
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||||
;
|
||||
; Module Name:
|
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;
|
||||
; CompareMem.Asm
|
||||
;
|
||||
; Abstract:
|
||||
;
|
||||
; CompareMem function
|
||||
;
|
||||
; Notes:
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;
|
||||
; The following BaseMemoryLib instances contain the same copy of this file:
|
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;
|
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; BaseMemoryLibRepStr
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; BaseMemoryLibMmx
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; BaseMemoryLibSse2
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; BaseMemoryLibOptDxe
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; BaseMemoryLibOptPei
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||||
;
|
||||
;------------------------------------------------------------------------------
|
||||
|
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.code
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|
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;------------------------------------------------------------------------------
|
||||
; INTN
|
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; EFIAPI
|
||||
; InternalMemCompareMem (
|
||||
; IN CONST VOID *DestinationBuffer,
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||||
; IN CONST VOID *SourceBuffer,
|
||||
; IN UINTN Length
|
||||
; );
|
||||
;------------------------------------------------------------------------------
|
||||
InternalMemCompareMem PROC USES rsi rdi
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mov rsi, rcx
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mov rdi, rdx
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mov rcx, r8
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repe cmpsb
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movzx rax, byte ptr [rsi - 1]
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movzx rdx, byte ptr [rdi - 1]
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sub rax, rdx
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ret
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InternalMemCompareMem ENDP
|
||||
|
||||
END
|
79
MdePkg/Library/BaseMemoryLibOptDxe/X64/CopyMem.asm
Normal file
79
MdePkg/Library/BaseMemoryLibOptDxe/X64/CopyMem.asm
Normal file
@@ -0,0 +1,79 @@
|
||||
;------------------------------------------------------------------------------
|
||||
;
|
||||
; Copyright (c) 2006, 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
|
||||
; http://opensource.org/licenses/bsd-license.php
|
||||
;
|
||||
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||||
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||||
;
|
||||
; Module Name:
|
||||
;
|
||||
; CopyMem.asm
|
||||
;
|
||||
; Abstract:
|
||||
;
|
||||
; CopyMem function
|
||||
;
|
||||
; Notes:
|
||||
;
|
||||
;------------------------------------------------------------------------------
|
||||
|
||||
.code
|
||||
|
||||
;------------------------------------------------------------------------------
|
||||
; VOID *
|
||||
; EFIAPI
|
||||
; InternalMemCopyMem (
|
||||
; IN VOID *Destination,
|
||||
; IN VOID *Source,
|
||||
; IN UINTN Count
|
||||
; );
|
||||
;------------------------------------------------------------------------------
|
||||
InternalMemCopyMem PROC USES rsi rdi
|
||||
mov rsi, rdx ; rsi <- Source
|
||||
mov rdi, rcx ; rdi <- Destination
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||||
lea r9, [rsi + r8 - 1] ; r9 <- Last byte of Source
|
||||
cmp rsi, rdi
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mov rax, rdi ; rax <- Destination as return value
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jae @F ; Copy forward if Source > Destination
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cmp r9, rdi ; Overlapped?
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||||
jae @CopyBackward ; Copy backward if overlapped
|
||||
@@:
|
||||
xor rcx, rcx
|
||||
sub rcx, rdi ; rcx <- -rdi
|
||||
and rcx, 15 ; rcx + rsi should be 16 bytes aligned
|
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jz @F ; skip if rcx == 0
|
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cmp rcx, r8
|
||||
cmova rcx, r8
|
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sub r8, rcx
|
||||
rep movsb
|
||||
@@:
|
||||
mov rcx, r8
|
||||
and r8, 15
|
||||
shr rcx, 4 ; rcx <- # of DQwords to copy
|
||||
jz @CopyBytes
|
||||
movdqa [rsp + 18h], xmm0 ; save xmm0 on stack
|
||||
@@:
|
||||
movdqu xmm0, [rsi] ; rsi may not be 16-byte aligned
|
||||
movntdq [rdi], xmm0 ; rdi should be 16-byte aligned
|
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add rsi, 16
|
||||
add rdi, 16
|
||||
loop @B
|
||||
mfence
|
||||
movdqa xmm0, [rsp + 18h] ; restore xmm0
|
||||
jmp @CopyBytes ; copy remaining bytes
|
||||
@CopyBackward:
|
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mov rsi, r9 ; rsi <- Last byte of Source
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||||
lea rdi, [rdi + r8 - 1] ; rdi <- Last byte of Destination
|
||||
std
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@CopyBytes:
|
||||
mov rcx, r8
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||||
rep movsb
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||||
cld
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||||
ret
|
||||
InternalMemCopyMem ENDP
|
||||
|
||||
END
|
53
MdePkg/Library/BaseMemoryLibOptDxe/X64/ScanMem16.asm
Normal file
53
MdePkg/Library/BaseMemoryLibOptDxe/X64/ScanMem16.asm
Normal file
@@ -0,0 +1,53 @@
|
||||
;------------------------------------------------------------------------------
|
||||
;
|
||||
; Copyright (c) 2006, 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
|
||||
; http://opensource.org/licenses/bsd-license.php
|
||||
;
|
||||
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||||
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||||
;
|
||||
; Module Name:
|
||||
;
|
||||
; ScanMem16.Asm
|
||||
;
|
||||
; Abstract:
|
||||
;
|
||||
; ScanMem16 function
|
||||
;
|
||||
; Notes:
|
||||
;
|
||||
; The following BaseMemoryLib instances contain the same copy of this file:
|
||||
;
|
||||
; BaseMemoryLibRepStr
|
||||
; BaseMemoryLibMmx
|
||||
; BaseMemoryLibSse2
|
||||
; BaseMemoryLibOptDxe
|
||||
; BaseMemoryLibOptPei
|
||||
;
|
||||
;------------------------------------------------------------------------------
|
||||
|
||||
.code
|
||||
|
||||
;------------------------------------------------------------------------------
|
||||
; CONST VOID *
|
||||
; EFIAPI
|
||||
; InternalMemScanMem16 (
|
||||
; IN CONST VOID *Buffer,
|
||||
; IN UINTN Length,
|
||||
; IN UINT16 Value
|
||||
; );
|
||||
;------------------------------------------------------------------------------
|
||||
InternalMemScanMem16 PROC USES rdi
|
||||
mov rdi, rcx
|
||||
mov rax, r8
|
||||
mov rcx, rdx
|
||||
repne scasw
|
||||
lea rax, [rdi - 2]
|
||||
cmovnz rax, rcx
|
||||
ret
|
||||
InternalMemScanMem16 ENDP
|
||||
|
||||
END
|
53
MdePkg/Library/BaseMemoryLibOptDxe/X64/ScanMem32.asm
Normal file
53
MdePkg/Library/BaseMemoryLibOptDxe/X64/ScanMem32.asm
Normal file
@@ -0,0 +1,53 @@
|
||||
;------------------------------------------------------------------------------
|
||||
;
|
||||
; Copyright (c) 2006, 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
|
||||
; http://opensource.org/licenses/bsd-license.php
|
||||
;
|
||||
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||||
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||||
;
|
||||
; Module Name:
|
||||
;
|
||||
; ScanMem32.Asm
|
||||
;
|
||||
; Abstract:
|
||||
;
|
||||
; ScanMem32 function
|
||||
;
|
||||
; Notes:
|
||||
;
|
||||
; The following BaseMemoryLib instances contain the same copy of this file:
|
||||
;
|
||||
; BaseMemoryLibRepStr
|
||||
; BaseMemoryLibMmx
|
||||
; BaseMemoryLibSse2
|
||||
; BaseMemoryLibOptDxe
|
||||
; BaseMemoryLibOptPei
|
||||
;
|
||||
;------------------------------------------------------------------------------
|
||||
|
||||
.code
|
||||
|
||||
;------------------------------------------------------------------------------
|
||||
; CONST VOID *
|
||||
; EFIAPI
|
||||
; InternalMemScanMem32 (
|
||||
; IN CONST VOID *Buffer,
|
||||
; IN UINTN Length,
|
||||
; IN UINT32 Value
|
||||
; );
|
||||
;------------------------------------------------------------------------------
|
||||
InternalMemScanMem32 PROC USES rdi
|
||||
mov rdi, rcx
|
||||
mov rax, r8
|
||||
mov rcx, rdx
|
||||
repne scasd
|
||||
lea rax, [rdi - 4]
|
||||
cmovnz rax, rcx
|
||||
ret
|
||||
InternalMemScanMem32 ENDP
|
||||
|
||||
END
|
53
MdePkg/Library/BaseMemoryLibOptDxe/X64/ScanMem64.asm
Normal file
53
MdePkg/Library/BaseMemoryLibOptDxe/X64/ScanMem64.asm
Normal file
@@ -0,0 +1,53 @@
|
||||
;------------------------------------------------------------------------------
|
||||
;
|
||||
; Copyright (c) 2006, 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
|
||||
; http://opensource.org/licenses/bsd-license.php
|
||||
;
|
||||
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||||
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||||
;
|
||||
; Module Name:
|
||||
;
|
||||
; ScanMem64.Asm
|
||||
;
|
||||
; Abstract:
|
||||
;
|
||||
; ScanMem64 function
|
||||
;
|
||||
; Notes:
|
||||
;
|
||||
; The following BaseMemoryLib instances contain the same copy of this file:
|
||||
;
|
||||
; BaseMemoryLibRepStr
|
||||
; BaseMemoryLibMmx
|
||||
; BaseMemoryLibSse2
|
||||
; BaseMemoryLibOptDxe
|
||||
; BaseMemoryLibOptPei
|
||||
;
|
||||
;------------------------------------------------------------------------------
|
||||
|
||||
.code
|
||||
|
||||
;------------------------------------------------------------------------------
|
||||
; CONST VOID *
|
||||
; EFIAPI
|
||||
; InternalMemScanMem64 (
|
||||
; IN CONST VOID *Buffer,
|
||||
; IN UINTN Length,
|
||||
; IN UINT64 Value
|
||||
; );
|
||||
;------------------------------------------------------------------------------
|
||||
InternalMemScanMem64 PROC USES rdi
|
||||
mov rdi, rcx
|
||||
mov rax, r8
|
||||
mov rcx, rdx
|
||||
repne scasq
|
||||
lea rax, [rdi - 8]
|
||||
cmovnz rax, rcx
|
||||
ret
|
||||
InternalMemScanMem64 ENDP
|
||||
|
||||
END
|
53
MdePkg/Library/BaseMemoryLibOptDxe/X64/ScanMem8.asm
Normal file
53
MdePkg/Library/BaseMemoryLibOptDxe/X64/ScanMem8.asm
Normal file
@@ -0,0 +1,53 @@
|
||||
;------------------------------------------------------------------------------
|
||||
;
|
||||
; Copyright (c) 2006, 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
|
||||
; http://opensource.org/licenses/bsd-license.php
|
||||
;
|
||||
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||||
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||||
;
|
||||
; Module Name:
|
||||
;
|
||||
; ScanMem8.Asm
|
||||
;
|
||||
; Abstract:
|
||||
;
|
||||
; ScanMem8 function
|
||||
;
|
||||
; Notes:
|
||||
;
|
||||
; The following BaseMemoryLib instances contain the same copy of this file:
|
||||
;
|
||||
; BaseMemoryLibRepStr
|
||||
; BaseMemoryLibMmx
|
||||
; BaseMemoryLibSse2
|
||||
; BaseMemoryLibOptDxe
|
||||
; BaseMemoryLibOptPei
|
||||
;
|
||||
;------------------------------------------------------------------------------
|
||||
|
||||
.code
|
||||
|
||||
;------------------------------------------------------------------------------
|
||||
; CONST VOID *
|
||||
; EFIAPI
|
||||
; InternalMemScanMem8 (
|
||||
; IN CONST VOID *Buffer,
|
||||
; IN UINTN Length,
|
||||
; IN UINT8 Value
|
||||
; );
|
||||
;------------------------------------------------------------------------------
|
||||
InternalMemScanMem8 PROC USES 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
|
||||
ret
|
||||
InternalMemScanMem8 ENDP
|
||||
|
||||
END
|
58
MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem.asm
Normal file
58
MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem.asm
Normal file
@@ -0,0 +1,58 @@
|
||||
;------------------------------------------------------------------------------
|
||||
;
|
||||
; Copyright (c) 2006, 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
|
||||
; http://opensource.org/licenses/bsd-license.php
|
||||
;
|
||||
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||||
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||||
;
|
||||
; Module Name:
|
||||
;
|
||||
; SetMem.Asm
|
||||
;
|
||||
; Abstract:
|
||||
;
|
||||
; SetMem function
|
||||
;
|
||||
; Notes:
|
||||
;
|
||||
;------------------------------------------------------------------------------
|
||||
|
||||
.code
|
||||
|
||||
;------------------------------------------------------------------------------
|
||||
; VOID *
|
||||
; EFIAPI
|
||||
; InternalMemSetMem (
|
||||
; IN VOID *Buffer,
|
||||
; IN UINTN Count,
|
||||
; IN UINT8 Value
|
||||
; )
|
||||
;------------------------------------------------------------------------------
|
||||
InternalMemSetMem PROC USES rdi rbx
|
||||
push rcx ; push Buffer
|
||||
mov rax, r8 ; rax = Value
|
||||
and rax, 0ffh ; rax = lower 8 bits of r8, upper 56 bits are 0
|
||||
mov ah, al ; ah = al
|
||||
mov bx, ax ; bx = ax
|
||||
shl rax, 10h ; rax = ax << 16
|
||||
mov ax, bx ; ax = bx
|
||||
mov rbx, rax ; ebx = eax
|
||||
shl rax, 20h ; rax = rax << 32
|
||||
or rax, rbx ; eax = ebx
|
||||
mov rdi, rcx ; rdi = Buffer
|
||||
mov rcx, rdx ; rcx = Count
|
||||
shr rcx, 3 ; rcx = rcx / 8
|
||||
cld
|
||||
rep stosq
|
||||
mov rcx, rdx ; rcx = rdx
|
||||
and rcx, 7 ; rcx = rcx & 7
|
||||
rep stosb
|
||||
pop rax ; rax = Buffer
|
||||
ret
|
||||
InternalMemSetMem ENDP
|
||||
|
||||
END
|
45
MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem16.asm
Normal file
45
MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem16.asm
Normal file
@@ -0,0 +1,45 @@
|
||||
;------------------------------------------------------------------------------
|
||||
;
|
||||
; Copyright (c) 2006, 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
|
||||
; http://opensource.org/licenses/bsd-license.php
|
||||
;
|
||||
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||||
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||||
;
|
||||
; Module Name:
|
||||
;
|
||||
; SetMem16.Asm
|
||||
;
|
||||
; Abstract:
|
||||
;
|
||||
; SetMem16 function
|
||||
;
|
||||
; Notes:
|
||||
;
|
||||
;------------------------------------------------------------------------------
|
||||
|
||||
.code
|
||||
|
||||
;------------------------------------------------------------------------------
|
||||
; VOID *
|
||||
; EFIAPI
|
||||
; InternalMemSetMem16 (
|
||||
; IN VOID *Buffer,
|
||||
; IN UINTN Count,
|
||||
; IN UINT16 Value
|
||||
; )
|
||||
;------------------------------------------------------------------------------
|
||||
InternalMemSetMem16 PROC USES rdi
|
||||
push rcx
|
||||
mov rdi, rcx
|
||||
mov rax, r8
|
||||
xchg rcx, rdx
|
||||
rep stosw
|
||||
pop rax
|
||||
ret
|
||||
InternalMemSetMem16 ENDP
|
||||
|
||||
END
|
45
MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem32.asm
Normal file
45
MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem32.asm
Normal file
@@ -0,0 +1,45 @@
|
||||
;------------------------------------------------------------------------------
|
||||
;
|
||||
; Copyright (c) 2006, 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
|
||||
; http://opensource.org/licenses/bsd-license.php
|
||||
;
|
||||
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||||
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||||
;
|
||||
; Module Name:
|
||||
;
|
||||
; SetMem32.Asm
|
||||
;
|
||||
; Abstract:
|
||||
;
|
||||
; SetMem32 function
|
||||
;
|
||||
; Notes:
|
||||
;
|
||||
;------------------------------------------------------------------------------
|
||||
|
||||
.code
|
||||
|
||||
;------------------------------------------------------------------------------
|
||||
; VOID *
|
||||
; EFIAPI
|
||||
; InternalMemSetMem32 (
|
||||
; IN VOID *Buffer,
|
||||
; IN UINTN Count,
|
||||
; IN UINT32 Value
|
||||
; );
|
||||
;------------------------------------------------------------------------------
|
||||
InternalMemSetMem32 PROC USES rdi
|
||||
push rcx
|
||||
mov rdi, rcx
|
||||
mov rax, r8
|
||||
xchg rcx, rdx
|
||||
rep stosd
|
||||
pop rax
|
||||
ret
|
||||
InternalMemSetMem32 ENDP
|
||||
|
||||
END
|
44
MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem64.asm
Normal file
44
MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem64.asm
Normal file
@@ -0,0 +1,44 @@
|
||||
;------------------------------------------------------------------------------
|
||||
;
|
||||
; Copyright (c) 2006, 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
|
||||
; http://opensource.org/licenses/bsd-license.php
|
||||
;
|
||||
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||||
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||||
;
|
||||
; Module Name:
|
||||
;
|
||||
; SetMem64.Asm
|
||||
;
|
||||
; Abstract:
|
||||
;
|
||||
; SetMem64 function
|
||||
;
|
||||
; Notes:
|
||||
;
|
||||
;------------------------------------------------------------------------------
|
||||
|
||||
.code
|
||||
|
||||
;------------------------------------------------------------------------------
|
||||
; VOID *
|
||||
; InternalMemSetMem64 (
|
||||
; IN VOID *Buffer,
|
||||
; IN UINTN Count,
|
||||
; IN UINT64 Value
|
||||
; )
|
||||
;------------------------------------------------------------------------------
|
||||
InternalMemSetMem64 PROC USES rdi
|
||||
push rcx
|
||||
mov rdi, rcx
|
||||
mov rax, r8
|
||||
xchg rcx, rdx
|
||||
rep stosq
|
||||
pop rax
|
||||
ret
|
||||
InternalMemSetMem64 ENDP
|
||||
|
||||
END
|
48
MdePkg/Library/BaseMemoryLibOptDxe/X64/ZeroMem.asm
Normal file
48
MdePkg/Library/BaseMemoryLibOptDxe/X64/ZeroMem.asm
Normal file
@@ -0,0 +1,48 @@
|
||||
;------------------------------------------------------------------------------
|
||||
;
|
||||
; Copyright (c) 2006, 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
|
||||
; http://opensource.org/licenses/bsd-license.php
|
||||
;
|
||||
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||||
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||||
;
|
||||
; Module Name:
|
||||
;
|
||||
; ZeroMem.Asm
|
||||
;
|
||||
; Abstract:
|
||||
;
|
||||
; ZeroMem function
|
||||
;
|
||||
; Notes:
|
||||
;
|
||||
;------------------------------------------------------------------------------
|
||||
|
||||
.code
|
||||
|
||||
;------------------------------------------------------------------------------
|
||||
; VOID *
|
||||
; InternalMemZeroMem (
|
||||
; IN VOID *Buffer,
|
||||
; IN UINTN Count
|
||||
; );
|
||||
;------------------------------------------------------------------------------
|
||||
InternalMemZeroMem PROC USES rdi
|
||||
push rcx ; push Buffer
|
||||
xor rax, rax ; rax = 0
|
||||
mov rdi, rcx ; rdi = Buffer
|
||||
mov rcx, rdx ; rcx = Count
|
||||
shr rcx, 3 ; rcx = rcx / 8
|
||||
and rdx, 7 ; rdx = rdx & 7
|
||||
cld
|
||||
rep stosq
|
||||
mov rcx, rdx ; rcx = rdx
|
||||
rep stosb
|
||||
pop rax ; rax = Buffer
|
||||
ret
|
||||
InternalMemZeroMem ENDP
|
||||
|
||||
END
|
Reference in New Issue
Block a user