summaryrefslogtreecommitdiffstats
path: root/MdePkg/Library/BaseMemoryLibRepStr/X64/CopyMem.S
diff options
context:
space:
mode:
authorvanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524>2008-09-25 03:15:26 +0000
committervanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524>2008-09-25 03:15:26 +0000
commit73269bfb71137f978fa49e9f80c9ccac15712e59 (patch)
treeb3872714d3d52414a468107fc8a4aeeae4d73ccd /MdePkg/Library/BaseMemoryLibRepStr/X64/CopyMem.S
parent9b2ea1b84f3c07a0e9ea3ff7e087869e7e7ce9e2 (diff)
downloadedk2-73269bfb71137f978fa49e9f80c9ccac15712e59.tar.gz
edk2-73269bfb71137f978fa49e9f80c9ccac15712e59.tar.bz2
edk2-73269bfb71137f978fa49e9f80c9ccac15712e59.zip
Rename
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5983 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibRepStr/X64/CopyMem.S')
-rw-r--r--MdePkg/Library/BaseMemoryLibRepStr/X64/CopyMem.S67
1 files changed, 67 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/X64/CopyMem.S b/MdePkg/Library/BaseMemoryLibRepStr/X64/CopyMem.S
new file mode 100644
index 0000000000..fe67040ff6
--- /dev/null
+++ b/MdePkg/Library/BaseMemoryLibRepStr/X64/CopyMem.S
@@ -0,0 +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
+.globl _InternalMemCopyMem
+_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
+