diff options
Diffstat (limited to 'MdePkg')
| -rw-r--r-- | MdePkg/Library/BaseMemoryLibMmx/BaseMemoryLibMmx.inf | 2 | ||||
| -rw-r--r-- | MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.nasm | 60 |
2 files changed, 62 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibMmx/BaseMemoryLibMmx.inf b/MdePkg/Library/BaseMemoryLibMmx/BaseMemoryLibMmx.inf index 1baaba75e7..a3bb2b6ca2 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/BaseMemoryLibMmx.inf +++ b/MdePkg/Library/BaseMemoryLibMmx/BaseMemoryLibMmx.inf @@ -114,6 +114,7 @@ X64/SetMem32.asm
X64/SetMem16.nasm
X64/SetMem16.asm
+ X64/SetMem.nasm
X64/SetMem.asm
X64/CopyMem.asm
X64/ScanMem64.nasm
@@ -134,6 +135,7 @@ X64/SetMem16.S
X64/ZeroMem.nasm
X64/ZeroMem.S
+ X64/SetMem.nasm
X64/SetMem.S
X64/CopyMem.S
diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.nasm b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.nasm new file mode 100644 index 0000000000..5b2db66e07 --- /dev/null +++ b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.nasm @@ -0,0 +1,60 @@ +;------------------------------------------------------------------------------
+;
+; 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:
+;
+; SetMem.nasm
+;
+; Abstract:
+;
+; SetMem function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+ DEFAULT REL
+ SECTION .text
+
+;------------------------------------------------------------------------------
+; VOID *
+; EFIAPI
+; InternalMemSetMem (
+; OUT VOID *Buffer,
+; IN UINTN Length,
+; IN UINT8 Value
+; );
+;------------------------------------------------------------------------------
+global ASM_PFX(InternalMemSetMem)
+ASM_PFX(InternalMemSetMem):
+ push rdi
+ mov rax, r8
+ mov ah, al
+ DB 0x48, 0xf, 0x6e, 0xc0 ; movd mm0, rax
+ mov r8, rcx
+ mov rdi, r8 ; rdi <- Buffer
+ mov rcx, rdx
+ and edx, 7
+ shr rcx, 3
+ jz @SetBytes
+ DB 0xf, 0x70, 0xC0, 0x0 ; pshufw mm0, mm0, 0h
+.0:
+ DB 0xf, 0xe7, 0x7 ; movntq [rdi], mm0
+ add rdi, 8
+ loop .0
+ mfence
+@SetBytes:
+ mov ecx, edx
+ rep stosb
+ mov rax, r8
+ pop rdi
+ ret
+
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