From 1760cf81e4b1847c6823ea3514a78dd120e19b6e Mon Sep 17 00:00:00 2001 From: Guo Mang Date: Thu, 22 Dec 2016 15:57:14 +0800 Subject: MdePkg: Move to new location Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Guo Mang --- Core/MdePkg/Library/BaseLib/Ia32/RRotU64.asm | 51 ++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 Core/MdePkg/Library/BaseLib/Ia32/RRotU64.asm (limited to 'Core/MdePkg/Library/BaseLib/Ia32/RRotU64.asm') diff --git a/Core/MdePkg/Library/BaseLib/Ia32/RRotU64.asm b/Core/MdePkg/Library/BaseLib/Ia32/RRotU64.asm new file mode 100644 index 0000000000..6afb0cc0fc --- /dev/null +++ b/Core/MdePkg/Library/BaseLib/Ia32/RRotU64.asm @@ -0,0 +1,51 @@ +;------------------------------------------------------------------------------ +; +; Copyright (c) 2006 - 2015, 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: +; +; RRotU64.asm +; +; Abstract: +; +; 64-bit right rotation for Ia32 +; +;------------------------------------------------------------------------------ + + .686 + .model flat,C + .code + +;------------------------------------------------------------------------------ +; UINT64 +; EFIAPI +; InternalMathRRotU64 ( +; IN UINT64 Operand, +; IN UINTN Count +; ); +;------------------------------------------------------------------------------ +InternalMathRRotU64 PROC USES ebx + mov cl, [esp + 16] + mov eax, [esp + 8] + mov edx, [esp + 12] + shrd ebx, eax, cl + shrd eax, edx, cl + rol ebx, cl + shrd edx, ebx, cl + test cl, 32 ; Count >= 32? + jz @F + mov ecx, eax ; switch eax & edx if Count >= 32 + mov eax, edx + mov edx, ecx +@@: + ret +InternalMathRRotU64 ENDP + + END -- cgit v1.2.3