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// Copyright (C) 2003-2008 Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
// PatchEngine
// Supports simple memory patches, and has a partial Action Replay implementation
// in ActionReplay.cpp/h.
// Zelda item hang fixes:
// [Tue Aug 21 2007] [18:30:40] <Knuckles-> 0x802904b4 in US released
// [Tue Aug 21 2007] [18:30:53] <Knuckles-> 0x80294d54 in EUR Demo version
// [Tue Aug 21 2007] [18:31:10] <Knuckles-> we just patch a blr on it (0x4E800020)
// [OnLoad]
// 0x80020394=dword,0x4e800020
#include <string>
#include <vector>
#include <map>
#include "StringUtil.h"
#include "PatchEngine.h"
#include "IniFile.h"
#include "HW/Memmap.h"
#include "ActionReplay.h"
using namespace Common;
namespace
{
std::vector<Patch> onLoad;
std::vector<Patch> onFrame;
std::map<u32, int> speedHacks;
static void LoadPatchSection(const char *section, std::vector<Patch> &patches, IniFile &ini)
{
std::vector<std::string> keys;
ini.GetKeys(section, keys);
for (std::vector<std::string>::const_iterator iter = keys.begin(); iter != keys.end(); ++iter)
{
std::string key = *iter;
std::string value;
ini.Get(section, key.c_str(), &value, "BOGUS");
if (value != "BOGUS")
{
std::string val(value);
std::vector<std::string> items;
SplitString(val, ":", items);
if (items.size() >= 2) {
Patch p;
bool success = true;
success = success && TryParseUInt(std::string(key.c_str()), &p.address);
success = success && TryParseUInt(items[1], &p.value);
p.type = (PatchType)ChooseStringFrom(items[0].c_str(), PatchTypeStrings);
success = success && (p.type != (PatchType)-1);
if (success)
patches.push_back(p);
}
}
}
}
static void LoadSpeedhacks(const char *section, std::map<u32, int> &hacks, IniFile &ini) {
std::vector<std::string> keys;
ini.GetKeys(section, keys);
for (std::vector<std::string>::const_iterator iter = keys.begin(); iter != keys.end(); ++iter)
{
std::string key = *iter;
std::string value;
ini.Get(section, key.c_str(), &value, "BOGUS");
if (value != "BOGUS")
{
u32 address;
u32 cycles;
bool success = true;
success = success && TryParseUInt(std::string(key.c_str()), &address);
success = success && TryParseUInt(value, &cycles);
if (success) {
speedHacks[address] = (int)cycles;
}
}
}
}
} // namespace
int PatchEngine_GetSpeedhackCycles(u32 addr)
{
std::map<u32, int>::const_iterator iter = speedHacks.find(addr);
if (iter == speedHacks.end())
return 0;
else
return iter->second;
}
void PatchEngine_LoadPatches(const char *gameID)
{
IniFile ini;
std::string filename = std::string(FULL_GAMECONFIG_DIR) + gameID + ".ini";
if (ini.Load(filename.c_str())) {
LoadPatchSection("OnLoad", onLoad, ini);
LoadPatchSection("OnFrame", onFrame, ini);
LoadActionReplayCodes(ini, false);
LoadSpeedhacks("Speedhacks", speedHacks, ini);
}
}
void ApplyPatches(const std::vector<Patch> &patches)
{
for (std::vector<Patch>::const_iterator iter = patches.begin(); iter != patches.end(); ++iter)
{
u32 addr = iter->address;
u32 value = iter->value;
switch (iter->type)
{
case PATCH_8BIT:
Memory::Write_U8((u8)value, addr);
break;
case PATCH_16BIT:
Memory::Write_U16((u16)value, addr);
break;
case PATCH_32BIT:
Memory::Write_U32(value, addr);
break;
default:
//unknown patchtype
break;
}
}
}
void PatchEngine_ApplyLoadPatches()
{
ApplyPatches(onLoad);
}
void PatchEngine_ApplyFramePatches()
{
ApplyPatches(onFrame);
}
void PatchEngine_ApplyARPatches()
{
ActionReplayRunAllActive();
}
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