diff options
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibSse2/ia32/ScanMem64.s')
| -rw-r--r-- | MdePkg/Library/BaseMemoryLibSse2/ia32/ScanMem64.s | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibSse2/ia32/ScanMem64.s b/MdePkg/Library/BaseMemoryLibSse2/ia32/ScanMem64.s new file mode 100644 index 0000000000..00f6d74436 --- /dev/null +++ b/MdePkg/Library/BaseMemoryLibSse2/ia32/ScanMem64.s @@ -0,0 +1,53 @@ +#------------------------------------------------------------------------------ +# +# 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: +# +# ScanMem64.Asm +# +# Abstract: +# +# ScanMem64 function +# +# Notes: +# +# The following BaseMemoryLib instances share the same version of this file: +# +# BaseMemoryLibRepStr +# BaseMemoryLibMmx +# BaseMemoryLibSse2 +# +#------------------------------------------------------------------------------ + + .686: + #.MODEL flat,C + .code: + +.global _InternalMemScanMem64 +_InternalMemScanMem64: + push %edi + movl 12(%esp), %ecx + movl 16(%esp), %eax + movl 20(%esp), %edx + movl 8(%esp), %edi +L0: + cmpl (%edi), %eax + leal 8(%edi), %edi + loopne L0 + jne L1 + cmpl -4(%edi), %edx + jecxz L1 + jne L0 +L1: + leal -8(%edi), %eax + cmovne %ecx, %eax + pop %edi + ret |