mirror of https://github.com/acidanthera/audk.git
44 lines
1.1 KiB
ArmAsm
44 lines
1.1 KiB
ArmAsm
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006, Intel Corporation
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# All rights reserved. This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php
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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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# Module Name:
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#
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# RRotU64.asm
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#
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# Abstract:
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#
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# 64-bit right rotation for Ia32
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#
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#------------------------------------------------------------------------------
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.global _RRotU64
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push %ebx
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movb 16(%esp),%cl
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movl 8(%esp),%eax
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movl 12(%esp),%edx
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shrdl %cl,%eax,%ebx
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shrdl %cl,%edx,%eax
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roll %cl,%ebx
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shrdl %cl,%ebx,%edx
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testb $32,%cl
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cmovnz %eax, %ecx
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cmovnz %edx, %eax
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cmovnz %ecx, %edx
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pop %ebx
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ret
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