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76 lines
2.8 KiB
C++
76 lines
2.8 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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// Regular replacement funcs are just C functions. These take care of their
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// own parameter parsing using the old school PARAM macros.
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// The return value is the number of cycles to eat.
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// JIT replacefuncs can be for inline or "outline" replacement.
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// With inline replacement, we recognize the call to the functions
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// at jal time already. With outline replacement, we just replace the
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// implementation.
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// In both cases the jit needs to know how much to subtract downcount.
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//
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// If the replacement func returned a positive number, this will be treated
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// as the number of cycles to subtract.
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// If the replacement func returns -1, it will be assumed that the subtraction
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// was done by the replacement func.
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#pragma once
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#include "Common/CommonTypes.h"
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#include "Core/MIPS/JitCommon/NativeJit.h"
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typedef int (* ReplaceFunc)();
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enum {
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REPFLAG_ALLOWINLINE = 0x01,
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// Used to keep things around but disable them.
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REPFLAG_DISABLED = 0x02,
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// Note that this will re-execute in a function that loops at start.
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REPFLAG_HOOKENTER = 0x04,
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// Only hooks jr ra, so only use on funcs that have that.
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REPFLAG_HOOKEXIT = 0x08,
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};
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// Kind of similar to HLE functions but with different data.
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struct ReplacementTableEntry {
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const char *name;
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ReplaceFunc replaceFunc;
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MIPSComp::MIPSReplaceFunc jitReplaceFunc;
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int flags;
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s32 hookOffset;
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};
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void Replacement_Init();
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void Replacement_Shutdown();
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int GetNumReplacementFuncs();
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std::vector<int> GetReplacementFuncIndexes(u64 hash, int funcSize);
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const ReplacementTableEntry *GetReplacementFunc(int index);
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void WriteReplaceInstructions(u32 address, u64 hash, int size);
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void RestoreReplacedInstruction(u32 address);
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void RestoreReplacedInstructions(u32 startAddr, u32 endAddr);
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bool GetReplacedOpAt(u32 address, u32 *op);
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bool CanReplaceJalTo(u32 dest, const ReplacementTableEntry **entry, u32 *funcSize);
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// For savestates. If you call SaveAndClearReplacements(), you must call RestoreSavedReplacements().
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std::map<u32, u32> SaveAndClearReplacements();
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void RestoreSavedReplacements(const std::map<u32, u32> &saved);
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