diff --git a/MdePkg/Library/BaseMemoryLibMmx/BaseMemoryLibMmx.inf b/MdePkg/Library/BaseMemoryLibMmx/BaseMemoryLibMmx.inf index 13cef610c2..ad8e2fb7c9 100644 --- a/MdePkg/Library/BaseMemoryLibMmx/BaseMemoryLibMmx.inf +++ b/MdePkg/Library/BaseMemoryLibMmx/BaseMemoryLibMmx.inf @@ -62,6 +62,7 @@ Ia32/CompareMem.S Ia32/SetMem64.nasm Ia32/SetMem64.S + Ia32/SetMem32.nasm Ia32/SetMem32.S Ia32/SetMem16.S Ia32/ZeroMem.S @@ -79,6 +80,7 @@ Ia32/CompareMem.asm Ia32/SetMem64.nasm Ia32/SetMem64.asm + Ia32/SetMem32.nasm Ia32/SetMem32.asm Ia32/SetMem16.asm Ia32/ZeroMem.asm diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.nasm b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.nasm new file mode 100644 index 0000000000..fa96a8e82d --- /dev/null +++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.nasm @@ -0,0 +1,55 @@ +;------------------------------------------------------------------------------ +; +; 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: +; +; SetMem32.nasm +; +; Abstract: +; +; SetMem32 function +; +; Notes: +; +;------------------------------------------------------------------------------ + + SECTION .text + +;------------------------------------------------------------------------------ +; VOID * +; EFIAPI +; InternalMemSetMem32 ( +; IN VOID *Buffer, +; IN UINTN Count, +; IN UINT32 Value +; ); +;------------------------------------------------------------------------------ +global ASM_PFX(InternalMemSetMem32) +ASM_PFX(InternalMemSetMem32): + mov eax, [esp + 4] ; eax <- Buffer as return value + mov ecx, [esp + 8] ; ecx <- Count + movd mm0, dword [esp + 12] ; mm0 <- Value + shr ecx, 1 ; ecx <- number of qwords to set + mov edx, eax ; edx <- Buffer + jz @SetDwords + movq mm1, mm0 + psllq mm1, 32 + por mm0, mm1 +.0: + movq qword [edx], mm0 + lea edx, [edx + 8] ; use "lea" to avoid change in flags + loop .0 +@SetDwords: + jnc .1 + movd dword [edx], mm0 +.1: + ret +