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https://github.com/DaedalusX64/daedalus.git
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63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
/*
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Copyright (C) 2020 MasterFeizz
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <stdio.h>
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#include "DynaRec/AssemblyUtils.h"
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#ifdef DAEDALUS_CTR
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#include "SysCTR/Utility/MemoryCTR.h"
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#endif
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namespace AssemblyUtils
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{
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//*****************************************************************************
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// Patch a long jump to target the specified location.
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// Return true if the patching succeeded (i.e. within range), false otherwise
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//*****************************************************************************
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bool PatchJumpLong( CJumpLocation jump, CCodeLabel target )
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{
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u32* p_jump_addr( reinterpret_cast< u32* >( jump.GetWritableU8P() ) );
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auto address = target.GetTargetU8P();
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s32 offset = jump.GetOffset(target) - 8;
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offset >>= 2;
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p_jump_addr[0] = (p_jump_addr[0] &0xFF000000)| (offset & 0xFFFFFF);
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// All jumps are 32 bit offsets, and so always succeed.
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return true;
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}
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//*****************************************************************************
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// As above no (need to flush on intel)
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//*****************************************************************************
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bool PatchJumpLongAndFlush( CJumpLocation jump, CCodeLabel target )
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{
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PatchJumpLong( jump, target );
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#ifdef DAEDALUS_CTR
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_InvalidateAndFlushCaches();
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#endif
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return true;
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}
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}
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