diff options
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem.S')
| -rw-r--r-- | MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem.S | 152 |
1 files changed, 76 insertions, 76 deletions
diff --git a/MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem.S b/MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem.S index 86bba889f2..26305a7303 100644 --- a/MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem.S +++ b/MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem.S @@ -1,76 +1,76 @@ -#------------------------------------------------------------------------------ -# -# 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: -# -# SetMem.asm -# -# Abstract: -# -# SetMem function -# -# Notes: -# -#------------------------------------------------------------------------------ - - .686: - #.MODEL flat,C - .xmm: - .code: - -#------------------------------------------------------------------------------ -# VOID * -# _mem_SetMem ( -# IN VOID *Buffer, -# IN UINTN Count, -# IN UINT8 Value -# ); -#------------------------------------------------------------------------------ -.globl _InternalMemSetMem -_InternalMemSetMem: - push %edi - movl 12(%esp), %edx # edx <- Count - movl 8(%esp), %edi # edi <- Buffer - movb 16(%esp), %al # al <- Value - xorl %ecx, %ecx - subl %edi, %ecx - andl $15, %ecx # ecx + edi aligns on 16-byte boundary - jz L0 - cmpl %edx, %ecx - cmova %edx, %ecx - subl %ecx, %edx - rep - stosb -L0: - movl %edx, %ecx - andl $15, %edx - shrl $4, %ecx # ecx <- # of DQwords to set - jz L_SetBytes - movb %al, %ah # ax <- Value | (Value << 8) - addl $-16, %esp - movdqu %xmm0, (%esp) - movd %eax, %xmm0 - pshuflw $0, %xmm0, %xmm0 - movlhps %xmm0, %xmm0 -L1: - movntdq %xmm0, (%edi) - addl $16, %edi - loop L1 - mfence - movdqu (%esp), %xmm0 - addl $16, %esp # stack cleanup -L_SetBytes: - movl %edx, %ecx - rep - stosb - movl 8(%esp), %eax # eax <- Buffer as return value - pop %edi - ret +#------------------------------------------------------------------------------
+#
+# 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:
+#
+# SetMem.asm
+#
+# Abstract:
+#
+# SetMem function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+ .686:
+ #.MODEL flat,C
+ .xmm:
+ .code:
+
+#------------------------------------------------------------------------------
+# VOID *
+# _mem_SetMem (
+# IN VOID *Buffer,
+# IN UINTN Count,
+# IN UINT8 Value
+# );
+#------------------------------------------------------------------------------
+.globl _InternalMemSetMem
+_InternalMemSetMem:
+ push %edi
+ movl 12(%esp), %edx # edx <- Count
+ movl 8(%esp), %edi # edi <- Buffer
+ movb 16(%esp), %al # al <- Value
+ xorl %ecx, %ecx
+ subl %edi, %ecx
+ andl $15, %ecx # ecx + edi aligns on 16-byte boundary
+ jz L0
+ cmpl %edx, %ecx
+ cmova %edx, %ecx
+ subl %ecx, %edx
+ rep
+ stosb
+L0:
+ movl %edx, %ecx
+ andl $15, %edx
+ shrl $4, %ecx # ecx <- # of DQwords to set
+ jz L_SetBytes
+ movb %al, %ah # ax <- Value | (Value << 8)
+ addl $-16, %esp
+ movdqu %xmm0, (%esp)
+ movd %eax, %xmm0
+ pshuflw $0, %xmm0, %xmm0
+ movlhps %xmm0, %xmm0
+L1:
+ movntdq %xmm0, (%edi)
+ addl $16, %edi
+ loop L1
+ mfence
+ movdqu (%esp), %xmm0
+ addl $16, %esp # stack cleanup
+L_SetBytes:
+ movl %edx, %ecx
+ rep
+ stosb
+ movl 8(%esp), %eax # eax <- Buffer as return value
+ pop %edi
+ ret
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