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GeckoCode: Cleanup
The active codes vector cannot safely be used outside the mutex, move the lock out into RunCodeHandler. s_code_handler_installed was also racing against SetActiveCodes since it's being written both inside and outside the lock. General cleanup. Add s_ prefixes, use constexpr, remove C casts.
This commit is contained in:
EmptyChaos
parent
cf8ac5c09c
commit
e91c0222b4
@ -2,6 +2,8 @@
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <iterator>
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#include <mutex>
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#include <vector>
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@ -16,128 +18,118 @@
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namespace Gecko
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{
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static const u32 INSTALLER_BASE_ADDRESS = 0x80001800;
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static const u32 INSTALLER_END_ADDRESS = 0x80003000;
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static constexpr u32 INSTALLER_BASE_ADDRESS = 0x80001800;
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static constexpr u32 INSTALLER_END_ADDRESS = 0x80003000;
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static constexpr u32 CODE_SIZE = 8;
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static constexpr u32 MAGIC_GAMEID = 0xD01F1BAD;
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// return true if a code exists
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bool GeckoCode::Exist(u32 address, u32 data) const
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{
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for (const GeckoCode::Code& code : codes)
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{
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if (code.address == address && code.data == data)
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return true;
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}
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return false;
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return std::find_if(codes.begin(), codes.end(), [&](const Code& code) {
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return code.address == address && code.data == data;
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}) != codes.end();
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}
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// return true if the code is identical
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bool GeckoCode::Compare(const GeckoCode& compare) const
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{
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if (codes.size() != compare.codes.size())
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return false;
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unsigned int exist = 0;
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for (const GeckoCode::Code& code : codes)
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{
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if (compare.Exist(code.address, code.data))
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exist++;
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}
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return exist == codes.size();
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return codes.size() == compare.codes.size() &&
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std::equal(codes.begin(), codes.end(), compare.codes.begin(),
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[](const Code& a, const Code& b) {
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return a.address == b.address && a.data == b.data;
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});
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}
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static bool code_handler_installed = false;
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static bool s_code_handler_installed = false;
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// the currently active codes
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static std::vector<GeckoCode> active_codes;
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static std::mutex active_codes_lock;
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static std::vector<GeckoCode> s_active_codes;
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static std::mutex s_active_codes_lock;
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void SetActiveCodes(const std::vector<GeckoCode>& gcodes)
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{
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std::lock_guard<std::mutex> lk(active_codes_lock);
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std::lock_guard<std::mutex> lk(s_active_codes_lock);
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active_codes.clear();
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s_active_codes.clear();
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s_active_codes.reserve(gcodes.size());
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std::copy_if(gcodes.begin(), gcodes.end(), std::back_inserter(s_active_codes),
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[](const GeckoCode& code) { return code.enabled; });
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s_active_codes.shrink_to_fit();
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// add enabled codes
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for (const GeckoCode& gecko_code : gcodes)
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{
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if (gecko_code.enabled)
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{
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// TODO: apply modifiers
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// TODO: don't need description or creator string, just takin up memory
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active_codes.push_back(gecko_code);
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}
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}
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code_handler_installed = false;
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s_code_handler_installed = false;
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}
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static bool InstallCodeHandler()
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// Requires s_active_codes_lock
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// NOTE: Refer to "codehandleronly.s" from Gecko OS.
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static bool InstallCodeHandlerLocked()
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{
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std::string data;
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std::string _rCodeHandlerFilename = File::GetSysDirectory() + GECKO_CODE_HANDLER;
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if (!File::ReadFileToString(_rCodeHandlerFilename, data))
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if (!File::ReadFileToString(File::GetSysDirectory() + GECKO_CODE_HANDLER, data))
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{
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WARN_LOG(ACTIONREPLAY, "Could not enable cheats because codehandler.bin was missing.");
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ERROR_LOG(ACTIONREPLAY, "Could not enable cheats because " GECKO_CODE_HANDLER " was missing.");
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return false;
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}
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u8 mmioAddr = 0xCC;
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if (data.size() > INSTALLER_END_ADDRESS - INSTALLER_BASE_ADDRESS - CODE_SIZE)
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{
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ERROR_LOG(ACTIONREPLAY, GECKO_CODE_HANDLER " is too big. The file may be corrupt.");
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return false;
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}
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u8 mmio_addr = 0xCC;
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if (SConfig::GetInstance().bWii)
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{
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mmioAddr = 0xCD;
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mmio_addr = 0xCD;
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}
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// Install code handler
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for (size_t i = 0, e = data.length(); i < e; ++i)
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PowerPC::HostWrite_U8(data[i], (u32)(INSTALLER_BASE_ADDRESS + i));
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for (u32 i = 0; i < data.size(); ++i)
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PowerPC::HostWrite_U8(data[i], INSTALLER_BASE_ADDRESS + i);
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// Patch the code handler to the system starting up
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// Patch the code handler to the current system type (Gamecube/Wii)
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for (unsigned int h = 0; h < data.length(); h += 4)
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{
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// Patch MMIO address
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if (PowerPC::HostRead_U32(INSTALLER_BASE_ADDRESS + h) == (0x3f000000u | ((mmioAddr ^ 1) << 8)))
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if (PowerPC::HostRead_U32(INSTALLER_BASE_ADDRESS + h) == (0x3f000000u | ((mmio_addr ^ 1) << 8)))
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{
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NOTICE_LOG(ACTIONREPLAY, "Patching MMIO access at %08x", INSTALLER_BASE_ADDRESS + h);
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PowerPC::HostWrite_U32(0x3f000000u | mmioAddr << 8, INSTALLER_BASE_ADDRESS + h);
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PowerPC::HostWrite_U32(0x3f000000u | mmio_addr << 8, INSTALLER_BASE_ADDRESS + h);
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}
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}
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u32 codelist_base_address = INSTALLER_BASE_ADDRESS + (u32)data.length() - 8;
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u32 codelist_end_address = INSTALLER_END_ADDRESS;
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const u32 codelist_base_address =
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INSTALLER_BASE_ADDRESS + static_cast<u32>(data.size()) - CODE_SIZE;
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const u32 codelist_end_address = INSTALLER_END_ADDRESS;
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// Write a magic value to 'gameid' (codehandleronly does not actually read this).
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PowerPC::HostWrite_U32(0xd01f1bad, INSTALLER_BASE_ADDRESS);
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PowerPC::HostWrite_U32(MAGIC_GAMEID, INSTALLER_BASE_ADDRESS);
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// Create GCT in memory
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PowerPC::HostWrite_U32(0x00d0c0de, codelist_base_address);
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PowerPC::HostWrite_U32(0x00d0c0de, codelist_base_address + 4);
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std::lock_guard<std::mutex> lk(active_codes_lock);
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int i = 0;
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for (const GeckoCode& active_code : active_codes)
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for (const GeckoCode& active_code : s_active_codes)
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{
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if (active_code.enabled)
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{
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for (const GeckoCode::Code& code : active_code.codes)
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{
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// Make sure we have enough memory to hold the code list
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if ((codelist_base_address + 24 + i) < codelist_end_address)
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if ((codelist_base_address + CODE_SIZE * 3 + i) < codelist_end_address)
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{
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PowerPC::HostWrite_U32(code.address, codelist_base_address + 8 + i);
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PowerPC::HostWrite_U32(code.data, codelist_base_address + 12 + i);
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i += 8;
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PowerPC::HostWrite_U32(code.address, codelist_base_address + CODE_SIZE + i);
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PowerPC::HostWrite_U32(code.data, codelist_base_address + CODE_SIZE + 4 + i);
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i += CODE_SIZE;
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}
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}
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}
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}
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PowerPC::HostWrite_U32(0xff000000, codelist_base_address + 8 + i);
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PowerPC::HostWrite_U32(0x00000000, codelist_base_address + 12 + i);
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// Stop code. Tells the handler that this is the end of the list.
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PowerPC::HostWrite_U32(0xF0000000, codelist_base_address + CODE_SIZE + i);
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PowerPC::HostWrite_U32(0x00000000, codelist_base_address + CODE_SIZE + 4 + i);
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// Turn on codes
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PowerPC::HostWrite_U8(1, INSTALLER_BASE_ADDRESS + 7);
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@ -147,24 +139,24 @@ static bool InstallCodeHandler()
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{
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PowerPC::ppcState.iCache.Invalidate(INSTALLER_BASE_ADDRESS + j);
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}
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for (unsigned int k = codelist_base_address; k < codelist_end_address; k += 32)
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{
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PowerPC::ppcState.iCache.Invalidate(k);
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}
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return true;
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}
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void RunCodeHandler()
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{
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if (!SConfig::GetInstance().bEnableCheats || active_codes.empty())
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if (!SConfig::GetInstance().bEnableCheats)
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return;
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if (!code_handler_installed || PowerPC::HostRead_U32(INSTALLER_BASE_ADDRESS) - 0xd01f1bad > 5)
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std::lock_guard<std::mutex> codes_lock(s_active_codes_lock);
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if (s_active_codes.empty())
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return;
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if (!s_code_handler_installed || PowerPC::HostRead_U32(INSTALLER_BASE_ADDRESS) - MAGIC_GAMEID > 5)
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{
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code_handler_installed = InstallCodeHandler();
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s_code_handler_installed = InstallCodeHandlerLocked();
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// A warning was already issued for the install failing
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if (!code_handler_installed)
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if (!s_code_handler_installed)
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return;
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}
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@ -34,7 +34,6 @@ public:
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};
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void SetActiveCodes(const std::vector<GeckoCode>& gcodes);
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bool RunActiveCodes();
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void RunCodeHandler();
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} // namespace Gecko
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