diff options
Diffstat (limited to 'Core/CPU/x64/x64AsmLib/MemReadWrite32.asm')
| -rw-r--r-- | Core/CPU/x64/x64AsmLib/MemReadWrite32.asm | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/Core/CPU/x64/x64AsmLib/MemReadWrite32.asm b/Core/CPU/x64/x64AsmLib/MemReadWrite32.asm new file mode 100644 index 0000000..a9ab5ba --- /dev/null +++ b/Core/CPU/x64/x64AsmLib/MemReadWrite32.asm @@ -0,0 +1,93 @@ +;************************************************************************* +;************************************************************************* +;** ** +;** (C)Copyright 1985-2009, American Megatrends, Inc. ** +;** ** +;** All Rights Reserved. ** +;** ** +;** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 ** +;** ** +;** Phone: (770)-246-8600 ** +;** ** +;************************************************************************* +;************************************************************************* + +;************************************************************************* +; $Header: /Alaska/SOURCE/Core/Modules/x64Core/x64AsmLib/MemReadWrite32.asm 1 10/01/10 5:07p Felixp $ +; +; $Revision: 1 $ +; +; $Date: 10/01/10 5:07p $ +;************************************************************************* +; Revision History +; ---------------- +; $Log: /Alaska/SOURCE/Core/Modules/x64Core/x64AsmLib/MemReadWrite32.asm $ +; +; 1 10/01/10 5:07p Felixp +; +; 1 8/24/06 12:57p Felixp +; +;************************************************************************* +;<AMI_FHDR_START> +; +; Name: +; +; Description: +; +;<AMI_FHDR_END> +;************************************************************************* +.code + +;************************************************************************* +;<AMI_PHDR_START> +; +; Name: MemReadWrite32 +; +; Description: +; VOID MemReadWrite32(IN UINT32 *Address, IN UINT32 Value, IN UINT32 Mask) +; reads the 32-bit value stored at Address, ANDs it with Mask, ORs the result +; with Value, then writes the result back to Address. +; +; Input: +; IN UINT32 *Address +; Address which shall be read from and subsequently written to. +; +; IN UINT32 Value +; Value to be ORed with the value stored at Address after it has been ANDed +; with the provided Mask. +; +; IN UINT32 Mask +; Mask to be ANDed with the original value stored at Address. +; +; Output: +; VOID. +; +; Modified: +; +; Referrals: +; +; Notes: +; +;<AMI_PHDR_END> +;************************************************************************* +MemReadWrite32 proc + mov eax, [rcx] + and eax, r8D ;Mask + or eax, edx ;Value + mov [rcx], eax + ret +MemReadWrite32 endp + +END +;************************************************************************* +;************************************************************************* +;** ** +;** (C)Copyright 1985-2009, American Megatrends, Inc. ** +;** ** +;** All Rights Reserved. ** +;** ** +;** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 ** +;** ** +;** Phone: (770)-246-8600 ** +;** ** +;************************************************************************* |