mirror of https://github.com/acidanthera/audk.git
87 lines
2.3 KiB
ArmAsm
87 lines
2.3 KiB
ArmAsm
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/// @file
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/// IPF specific Global Pointer and Stack Pointer accessing functions
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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: AccessGp.s
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///
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///
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//---------------------------------------------------------------------------------
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//++
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// AsmReadGp
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//
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// This routine is used to read the current value of 64-bit Global Pointer (GP).
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//
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// Arguments :
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//
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// On Entry :
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//
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// Return Value: The current GP value.
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//
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//--
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//----------------------------------------------------------------------------------
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.text
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.type AsmReadGp, @function
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.proc AsmReadGp
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AsmReadGp::
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mov r8 = gp;;
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br.ret.dpnt b0;;
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.endp AsmReadGp
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//---------------------------------------------------------------------------------
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//++
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// AsmWriteGp
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//
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// This routine is used to write the current value of 64-bit Global Pointer (GP).
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//
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// Arguments :
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//
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// On Entry : The value need to be written.
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//
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// Return Value: The value have been written.
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//
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//--
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//----------------------------------------------------------------------------------
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.text
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.type AsmWriteGp, @function
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.proc AsmWriteGp
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.regstk 1, 0, 0, 0
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AsmWriteGp::
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mov gp = in0
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mov r8 = in0;;
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br.ret.dpnt b0;;
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.endp AsmWriteGp
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//---------------------------------------------------------------------------------
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//++
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// AsmReadSp
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//
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// This routine is used to read the current value of 64-bit Stack Pointer (SP).
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//
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// Arguments :
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//
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// On Entry :
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//
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// Return Value: The current SP value.
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//
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//--
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//----------------------------------------------------------------------------------
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.text
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.type AsmReadSp, @function
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.proc AsmReadSp
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AsmReadSp::
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mov r8 = sp;;
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br.ret.dpnt b0;;
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.endp AsmReadSp
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