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; Copyright (c) 2004, 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:
;
; LRotU64.asm
;
; Abstract:
;
; 64-bit left rotation for Ia32
;
;------------------------------------------------------------------------------
.686
.model flat,C
.code
;------------------------------------------------------------------------------
; UINT64
; EFIAPI
; InternalMathLRotU64 (
; IN UINT64 Operand,
; IN UINTN Count
; );
;------------------------------------------------------------------------------
InternalMathLRotU64 PROC USES ebx
mov cl, [esp + 16]
mov edx, [esp + 12]
mov eax, [esp + 8]
shld ebx, edx, cl
shld edx, eax, cl
ror ebx, cl
shld eax, ebx, cl
test cl, 32 ; Count >= 32?
cmovnz ecx, eax
cmovnz eax, edx
cmovnz edx, ecx
ret
InternalMathLRotU64 ENDP
END
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