diff options
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibOptPei/X64/CopyMem.S')
-rw-r--r-- | MdePkg/Library/BaseMemoryLibOptPei/X64/CopyMem.S | 134 |
1 files changed, 67 insertions, 67 deletions
diff --git a/MdePkg/Library/BaseMemoryLibOptPei/X64/CopyMem.S b/MdePkg/Library/BaseMemoryLibOptPei/X64/CopyMem.S index c75da2086f..afc79bc3ec 100644 --- a/MdePkg/Library/BaseMemoryLibOptPei/X64/CopyMem.S +++ b/MdePkg/Library/BaseMemoryLibOptPei/X64/CopyMem.S @@ -1,67 +1,67 @@ -# -# ConvertAsm.py: Automatically generated from CopyMem.asm -# -#------------------------------------------------------------------------------ -# -# 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.S -# -# Abstract: -# -# CopyMem function -# -# Notes: -# -#------------------------------------------------------------------------------ - - -#------------------------------------------------------------------------------ -# VOID * -# EFIAPI -# InternalMemCopyMem ( -# IN VOID *Destination, -# IN VOID *Source, -# IN UINTN Count -# ) -#------------------------------------------------------------------------------ -.intel_syntax noprefix -.globl 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 - jae _InternalMemCopyMem_al_0000 - cmp r9, rdi - jae _atSym_CopyBackward # Copy backward if overlapped -_InternalMemCopyMem_al_0000: - mov rcx, r8 - and r8, 7 - shr rcx, 3 - rep movsq # Copy as many Qwords as possible - jmp _atSym_CopyBytes -_atSym_CopyBackward: - mov rsi, r9 # rsi <- End of Source - lea rdi, [rdi + r8 - 1] # esi <- End of Destination - std # set direction flag -_atSym_CopyBytes: - mov rcx, r8 - rep movsb # Copy bytes backward - cld - pop rdi - pop rsi - ret - +#
+# ConvertAsm.py: Automatically generated from CopyMem.asm
+#
+#------------------------------------------------------------------------------
+#
+# 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.S
+#
+# Abstract:
+#
+# CopyMem function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+
+#------------------------------------------------------------------------------
+# VOID *
+# EFIAPI
+# InternalMemCopyMem (
+# IN VOID *Destination,
+# IN VOID *Source,
+# IN UINTN Count
+# )
+#------------------------------------------------------------------------------
+.intel_syntax noprefix
+.globl 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
+ jae _InternalMemCopyMem_al_0000
+ cmp r9, rdi
+ jae _atSym_CopyBackward # Copy backward if overlapped
+_InternalMemCopyMem_al_0000:
+ mov rcx, r8
+ and r8, 7
+ shr rcx, 3
+ rep movsq # Copy as many Qwords as possible
+ jmp _atSym_CopyBytes
+_atSym_CopyBackward:
+ mov rsi, r9 # rsi <- End of Source
+ lea rdi, [rdi + r8 - 1] # esi <- End of Destination
+ std # set direction flag
+_atSym_CopyBytes:
+ mov rcx, r8
+ rep movsb # Copy bytes backward
+ cld
+ pop rdi
+ pop rsi
+ ret
+
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