diff options
Diffstat (limited to 'Core/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.nasm')
-rw-r--r-- | Core/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.nasm | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.nasm b/Core/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.nasm new file mode 100644 index 0000000000..d7ea6c5a45 --- /dev/null +++ b/Core/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.nasm @@ -0,0 +1,61 @@ +;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
+; 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.nasm
+;
+; Abstract:
+;
+; SetMem16 function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+ SECTION .text
+
+;------------------------------------------------------------------------------
+; VOID *
+; EFIAPI
+; InternalMemSetMem16 (
+; IN VOID *Buffer,
+; IN UINTN Count,
+; IN UINT16 Value
+; )
+;------------------------------------------------------------------------------
+global ASM_PFX(InternalMemSetMem16)
+ASM_PFX(InternalMemSetMem16):
+ push edi
+ mov eax, [esp + 16]
+ shrd edx, eax, 16
+ shld eax, edx, 16
+ mov edx, [esp + 12]
+ mov edi, [esp + 8]
+ mov ecx, edx
+ and edx, 3
+ shr ecx, 2
+ jz @SetWords
+ movd mm0, eax
+ movd mm1, eax
+ psllq mm0, 32
+ por mm0, mm1
+.0:
+ movq [edi], mm0
+ add edi, 8
+ loop .0
+@SetWords:
+ mov ecx, edx
+ rep stosw
+ mov eax, [esp + 8]
+ pop edi
+ ret
+
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