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541a42a7e3
Turns out one of the magic numbers was very magic. The gameid is an ad-hoc comm protocol with HLE_Misc to control the number of times the ICache is reset.
53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
// Copyright 2010 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#pragma once
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#include <string>
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#include <vector>
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#include "Common/CommonTypes.h"
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namespace Gecko
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{
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class GeckoCode
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{
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public:
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GeckoCode() : enabled(false) {}
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struct Code
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{
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u32 address = 0;
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u32 data = 0;
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std::string original_line;
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};
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std::vector<Code> codes;
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std::string name, creator;
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std::vector<std::string> notes;
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bool enabled;
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bool user_defined;
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bool Compare(const GeckoCode& compare) const;
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bool Exist(u32 address, u32 data) const;
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};
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// Installation address for codehandler.bin in the Game's RAM
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constexpr u32 INSTALLER_BASE_ADDRESS = 0x80001800;
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constexpr u32 ENTRY_POINT = 0x800018A8;
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// This forms part of a communication protocol with HLE_Misc::HLEGeckoCodehandler.
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// Basically, codehandleronly.s doesn't use ICBI like it's supposed to when patching the
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// game's code. This results in the JIT happily ignoring all code patches for blocks that
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// are already compiled. The hack for getting around that is that the first 5 frames after
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// the handler is installed (0xD01F1BAD -> +5 -> 0xD01F1BB2) cause full ICache resets.
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//
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// HLEGeckoCodehandler will increment this value 5 times then cease flushing the ICache to
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// preserve the emulation performance.
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constexpr u32 MAGIC_GAMEID = 0xD01F1BAD;
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void SetActiveCodes(const std::vector<GeckoCode>& gcodes);
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void RunCodeHandler();
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} // namespace Gecko
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