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authorbbahnsen <bbahnsen@6f19259b-4bc3-4df7-8a09-765794883524>2006-11-23 00:22:20 +0000
committerbbahnsen <bbahnsen@6f19259b-4bc3-4df7-8a09-765794883524>2006-11-23 00:22:20 +0000
commit02ad42aed8817f35b46be665b4b8d92be7abfa72 (patch)
tree726f95c5a5238a0e144108975c0af984b1c5cc38 /MdePkg/Library/BaseMemoryLibMmx
parent45a6b8074a0629de2845ec7aa4f580f9bcdff3ab (diff)
downloadedk2-platforms-02ad42aed8817f35b46be665b4b8d92be7abfa72.tar.xz
Port a couple of files to gnu assembly.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2001 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibMmx')
-rw-r--r--MdePkg/Library/BaseMemoryLibMmx/X64/CompareMem.S52
-rw-r--r--MdePkg/Library/BaseMemoryLibMmx/X64/CopyMem.S72
2 files changed, 124 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/CompareMem.S b/MdePkg/Library/BaseMemoryLibMmx/X64/CompareMem.S
new file mode 100644
index 0000000000..fb1dccee0b
--- /dev/null
+++ b/MdePkg/Library/BaseMemoryLibMmx/X64/CompareMem.S
@@ -0,0 +1,52 @@
+#------------------------------------------------------------------------------
+#
+# 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:
+#
+# CompareMem.Asm
+#
+# Abstract:
+#
+# CompareMem function
+#
+# Notes:
+#
+# The following BaseMemoryLib instances share the same version of this file:
+#
+# BaseMemoryLibRepStr
+# BaseMemoryLibMmx
+# BaseMemoryLibSse2
+#
+#------------------------------------------------------------------------------
+
+#------------------------------------------------------------------------------
+# INTN
+# EFIAPI
+# InternalMemCompareMem (
+# IN CONST VOID *DestinationBuffer,
+# IN CONST VOID *SourceBuffer,
+# IN UINTN Length
+# );
+#------------------------------------------------------------------------------
+.global _InternalMemCompareMem;
+_InternalMemCompareMem:
+ push %rsi
+ push %rdi
+ mov %rcx, %rsi
+ mov %rdx, %rdi
+ mov %r8, %rcx
+ repe cmpsb
+ movzbq -1(%rsi), %rax
+ movzbq -1(%rdi), %rdx
+ sub %rdx, %rax
+ pop %rdi
+ pop %rsi
+ ret
diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/CopyMem.S b/MdePkg/Library/BaseMemoryLibMmx/X64/CopyMem.S
new file mode 100644
index 0000000000..c4ecdc70eb
--- /dev/null
+++ b/MdePkg/Library/BaseMemoryLibMmx/X64/CopyMem.S
@@ -0,0 +1,72 @@
+#------------------------------------------------------------------------------
+#
+# 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:
+#
+#------------------------------------------------------------------------------
+
+
+#------------------------------------------------------------------------------
+# VOID *
+# EFIAPI
+# InternalMemCopyMem (
+# OUT VOID *DestinationBuffer,
+# IN CONST VOID *SourceBuffer,
+# IN UINTN Length
+# );
+#------------------------------------------------------------------------------
+.global _InternalMemCopyMem;
+_InternalMemCopyMem:
+ push %rsi
+ push %rdi
+ mov %rdi, %rsi
+ mov %rcx, %rdi
+ lea -1(%r8,%rsi,1),%r9
+ cmp %rdi, %rsi
+ mov %rdi, %rax
+ jae L1
+ cmp %rdi, %r9
+ jae LCopyBackward # Copy backward if overlapped
+L1:
+ mov %r8, %rcx
+ and $7, %r8
+ shr $3, %rcx
+ jz LCopyBytes
+ movd %mm0, %r10 # (Save mm0 in r10)
+L2:
+ movd (%rsi), %mm0
+ movntq %mm0, (%rdi)
+ add $8, %rsi
+ add $8, %rdi
+ loop L2
+ mfence
+ movd %r10, %mm0 #(Restore mm0)
+ jmp LCopyBytes
+LCopyBackward:
+ mov %r9, %rsi
+ lea -1(%r8,%rdi,1),%rdi
+ std # set direction flag
+LCopyBytes:
+ mov %r8, %rcx
+ rep
+ movsb # Copy bytes backward
+ cld
+ pop %rdi
+ pop %rsi
+ ret