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https://github.com/libretro/ppsspp.git
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55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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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 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#include "Core/HLE/HLE.h"
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#include "Core/HLE/FunctionWrappers.h"
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#include "Core/HLE/sceMt19937.h"
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#include "Core/MemMap.h"
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#include "Core/Reporting.h"
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static u32 sceMt19937Init(u32 mt19937Addr, u32 seed)
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{
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WARN_LOG(HLE, "sceMt19937Init(%08x, %08x)", mt19937Addr, seed);
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if (!Memory::IsValidAddress(mt19937Addr))
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return -1;
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void *ptr = Memory::GetPointer(mt19937Addr);
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// This is made to match the memory layout of a PSP MT structure exactly.
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// Let's just construct it in place with placement new. Elite C++ hackery FTW.
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new (ptr) MersenneTwister(seed);
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return 0;
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}
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static u32 sceMt19937UInt(u32 mt19937Addr)
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{
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WARN_LOG(HLE, "sceMt19937UInt(%08x)", mt19937Addr);
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if (!Memory::IsValidAddress(mt19937Addr))
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return -1;
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MersenneTwister *mt = (MersenneTwister *)Memory::GetPointer(mt19937Addr);
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return mt->R32();
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}
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const HLEFunction sceMt19937[] =
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{
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{0xECF5D379, WrapU_UU<sceMt19937Init>, "sceMt19937Init"},
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{0xF40C98E6, WrapU_U<sceMt19937UInt>, "sceMt19937UInt"},
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};
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void Register_sceMt19937()
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{
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RegisterModule("sceMt19937", ARRAY_SIZE(sceMt19937), sceMt19937);
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}
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