diff options
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/EfiSetMem.S')
-rw-r--r-- | EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/EfiSetMem.S | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/EfiSetMem.S b/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/EfiSetMem.S deleted file mode 100644 index b0759589ff..0000000000 --- a/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/EfiSetMem.S +++ /dev/null @@ -1,158 +0,0 @@ -#/*++
-#
-#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:
-#
-# EfiSetMem.asm
-#
-#Abstract:
-#
-# This is the code that supports IA32-optimized SetMem service
-#
-#--*/
-#include "EfiBind.h"
-#---------------------------------------------------------------------------
- .686:
- #.MODEL flat,C
- .mmx:
- .code:
-
-#---------------------------------------------------------------------------
-.globl ASM_PFX(EfiCommonLibSetMem)
-
-#VOID
-#EfiCommonLibSetMem (
-# IN VOID *Buffer,
-# IN UINTN Count,
-# IN UINT8 Value
-# )
-#/*++
-#
-#Input: VOID *Buffer - Pointer to buffer to write
-# UINTN Count - Number of bytes to write
-# UINT8 Value - Value to write
-#
-#Output: None.
-#
-#Saves:
-#
-#Modifies:
-#
-#Description: This function is an optimized set-memory function.
-#
-#Notes: This function tries to set memory 8 bytes at a time. As a result,
-# it first picks up any misaligned bytes, then words, before getting
-# in the main loop that does the 8-byte clears.
-#
-#--*/
-ASM_PFX(EfiCommonLibSetMem):
-
- pushl %ebp
- movl %esp, %ebp
- subl $0x10, %esp # Reserve space for local variable UINT64 QWordValue @[ebp - 10H] & UINT64 MmxSave @[ebp - 18H]
- pushl %ebx
- pushl %edi
-
- movl 0xC(%ebp), %edx # Count
- testl %edx, %edx
- je _SetMemDone
-
- pushl %ebx
-
- movl 8(%ebp), %eax # Buffer
- movb 0x10(%ebp), %bl # Value
- movl %eax, %edi
- movb %bl, %bh
-
- cmpl $256, %edx
- jb _SetRemindingByte
-
- andb $0x7, %al
- testb %al, %al
- je _SetBlock
-
- movl %edi, %eax
- shrl $3, %eax
- incl %eax
- shll $3, %eax
- subl %edi, %eax
- cmpl %edx, %eax
- jnb _SetRemindingByte
-
- subl %eax, %edx
- movl %eax, %ecx
-
- movb %bl, %al
- rep
- stosb
-
-_SetBlock:
- movl %edx, %eax
- shrl $6, %eax
- testl %eax, %eax
- je _SetRemindingByte
-
- shll $6, %eax
- subl %eax, %edx
- shrl $6, %eax
-
- movw %bx, -0x10(%ebp) # QWordValue[0]
- movw %bx, -0x10+2(%ebp) # QWordValue[2]
- movw %bx, -0x10+4(%ebp) # QWordValue[4]
- movw %bx, -0x10+6(%ebp) # QWordValue[6]
-
-
- movq %mm0, -8(%ebp) # Save mm0 to MmxSave
- movq -0x10(%ebp), %mm0 # Load QWordValue to mm0
-
-_B:
- movq %mm0, %ds:(%edi)
- movq %mm0, %ds:8(%edi)
- movq %mm0, %ds:16(%edi)
- movq %mm0, %ds:24(%edi)
- movq %mm0, %ds:32(%edi)
- movq %mm0, %ds:40(%edi)
- movq %mm0, %ds:48(%edi)
- movq %mm0, %ds:56(%edi)
- addl $64, %edi
- decl %eax
- jnz _B
-
-# Restore mm0
- movq -8(%ebp), %mm0 # Restore MmxSave to mm0
- emms # Exit MMX Instruction
-
-_SetRemindingByte:
- movl %edx, %ecx
-
- movl %ebx, %eax
- shll $16, %eax
- movw %bx, %ax
- shrl $2, %ecx
- rep
- stosl
-
- movl %edx, %ecx
- andl $3, %ecx
- rep
- stosb
-
- popl %ebx
-
-_SetMemDone:
-
- popl %edi
- popl %ebx
- leave
- ret
-
-#EfiCommonLibSetMem ENDP
-
|