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dolphin
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Added code to patch the codehandler's MMIO address to the currently running system. Added code to detect the location of where the code list should be. This allows any Gecko code handler to be used. Replace the codehandler.bin file with the code handler to be used (e.g. codehandleronly.bin).

This commit is contained in:
skidau 2014-09-04 07:44:45 +10:00
parent 08715167a8
commit 0da22d687d
1 changed files with 25 additions and 20 deletions
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45
Source/Core/Core/GeckoCode.cpp
View File

@ -15,8 +15,8 @@
namespace Gecko
{
const u32 installer_base_address = 0x80001800;
const u32 installer_end_address = 0x80003000;
static const u32 INSTALLER_BASE_ADDRESS = 0x80001800;
static const u32 INSTALLER_END_ADDRESS = 0x80003000;
// return true if a code exists
bool GeckoCode::Exist(u32 address, u32 data)
@ -90,27 +90,28 @@ static bool InstallCodeHandler()
}
// Install code handler
Memory::WriteBigEData((const u8*)data.data(), installer_base_address, data.length());
Memory::WriteBigEData((const u8*)data.data(), INSTALLER_BASE_ADDRESS, data.length());
// Patch the code handler to the system starting up
for (unsigned int h = 0; h < data.length(); h += 4)
{
// Patch MMIO address
if (Memory::ReadUnchecked_U32(installer_base_address + h) == (0x3f000000 | ((mmioAddr ^ 1) << 8)))
if (Memory::ReadUnchecked_U32(INSTALLER_BASE_ADDRESS + h) == (0x3f000000 | ((mmioAddr ^ 1) << 8)))
{
NOTICE_LOG(ACTIONREPLAY, "Patching MMIO access at %08x", installer_base_address + h);
Memory::Write_U32(0x3f000000 | mmioAddr << 8, installer_base_address + h);
NOTICE_LOG(ACTIONREPLAY, "Patching MMIO access at %08x", INSTALLER_BASE_ADDRESS + h);
Memory::Write_U32(0x3f000000 | mmioAddr << 8, INSTALLER_BASE_ADDRESS + h);
}
}
u32 codelist_location = installer_base_address + (u32)data.length() - 8;
u32 codelist_base_address = INSTALLER_BASE_ADDRESS + (u32)data.length() - 8;
u32 codelist_end_address = INSTALLER_END_ADDRESS;
// Write a magic value to 'gameid' (codehandleronly does not actually read this).
Memory::Write_U32(0xd01f1bad, installer_base_address);
Memory::Write_U32(0xd01f1bad, INSTALLER_BASE_ADDRESS);
// Create GCT in memory
Memory::Write_U32(0x00d0c0de, codelist_location);
Memory::Write_U32(0x00d0c0de, codelist_location + 4);
Memory::Write_U32(0x00d0c0de, codelist_base_address);
Memory::Write_U32(0x00d0c0de, codelist_base_address + 4);
std::lock_guard<std::mutex> lk(active_codes_lock);
@ -123,26 +124,30 @@ static bool InstallCodeHandler()
for (const GeckoCode::Code& code : active_code.codes)
{
// Make sure we have enough memory to hold the code list
if ((codelist_location + 24 + i) < installer_end_address)
if ((codelist_base_address + 24 + i) < codelist_end_address)
{
Memory::Write_U32(code.address, codelist_location + 8 + i);
Memory::Write_U32(code.data, codelist_location + 12 + i);
Memory::Write_U32(code.address, codelist_base_address + 8 + i);
Memory::Write_U32(code.data, codelist_base_address + 12 + i);
i += 8;
}
}
}
}
Memory::Write_U32(0xff000000, codelist_location + 8 + i);
Memory::Write_U32(0x00000000, codelist_location + 12 + i);
Memory::Write_U32(0xff000000, codelist_base_address + 8 + i);
Memory::Write_U32(0x00000000, codelist_base_address + 12 + i);
// Turn on codes
Memory::Write_U8(1, installer_base_address + 7);
Memory::Write_U8(1, INSTALLER_BASE_ADDRESS + 7);
// Invalidate the icache and any asm codes
for (unsigned int j = 0; j < installer_end_address; j += 32)
for (unsigned int j = 0; j < (INSTALLER_END_ADDRESS - INSTALLER_BASE_ADDRESS); j += 32)
{
PowerPC::ppcState.iCache.Invalidate(installer_base_address + j);
PowerPC::ppcState.iCache.Invalidate(INSTALLER_BASE_ADDRESS + j);
}
for (unsigned int k = codelist_base_address; k < codelist_end_address; k += 32)
{
PowerPC::ppcState.iCache.Invalidate(k);
}
return true;
}
@ -151,7 +156,7 @@ void RunCodeHandler()
{
if (SConfig::GetInstance().m_LocalCoreStartupParameter.bEnableCheats && active_codes.size() > 0)
{
if (!code_handler_installed || Memory::Read_U32(installer_base_address) - 0xd01f1bad > 5)
if (!code_handler_installed || Memory::Read_U32(INSTALLER_BASE_ADDRESS) - 0xd01f1bad > 5)
code_handler_installed = InstallCodeHandler();
if (!code_handler_installed)
@ -165,7 +170,7 @@ void RunCodeHandler()
u32 oldLR = LR;
PowerPC::CoreMode oldMode = PowerPC::GetMode();
PC = installer_base_address + 0xA8;
PC = INSTALLER_BASE_ADDRESS + 0xA8;
LR = 0;
// Execute the code handler in interpreter mode to track when it exits