diff options
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseMemoryLib/X64/CompareMem.S')
| -rw-r--r-- | EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseMemoryLib/X64/CompareMem.S | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseMemoryLib/X64/CompareMem.S b/EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseMemoryLib/X64/CompareMem.S index 011d2b00c1..c8d0ee90dc 100644 --- a/EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseMemoryLib/X64/CompareMem.S +++ b/EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseMemoryLib/X64/CompareMem.S @@ -3,7 +3,7 @@ #
#------------------------------------------------------------------------------
#
-# Copyright (c) 2006, Intel Corporation
+# Copyright (c) 2006 - 2009, 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
@@ -40,19 +40,18 @@ # IN UINTN Length
# );
#------------------------------------------------------------------------------
-.intel_syntax
.globl ASM_PFX(InternalMemCompareMem)
ASM_PFX(InternalMemCompareMem):
- push rsi
- push rdi
- mov rsi, rcx
- mov rdi, rdx
- mov rcx, r8
+ pushq %rsi
+ pushq %rdi
+ movq %rcx, %rsi
+ movq %rdx, %rdi
+ movq %r8, %rcx
repe cmpsb
- movzx rax, byte ptr [rsi - 1]
- movzx rdx, byte ptr [rdi - 1]
- sub rax, rdx
- pop rdi
- pop rsi
+ movzbq -1(%rsi) , %rax
+ movzbq -1(%rdi) , %rdx
+ subq %rdx, %rax
+ popq %rdi
+ popq %rsi
ret
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