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GamePatch: Add additional FFL endian-swap patch signature for Mario Kart 8 (#1867)

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iPixzl 2026-04-10 21:45:27 +01:00 committed by GitHub
parent b9b46ecb65
commit 1644fd2e09
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GPG Key ID: B5690EEEBB952194
1 changed files with 17 additions and 1 deletions
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18
src/Cafe/GamePatch.cpp
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@ -245,6 +245,10 @@ uint8 botw_crashFuncMask[] = { 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF
uint8 ffl_floatArrayEndianSwap[] = { 0x7C,0x08,0x02,0xA6,0x94,0x21,0xFF,0xE8,0x93,0xC1,0x00,0x10,0x7C,0x7E,0x1B,0x78,0x93,0xE1,0x00,0x14,0x93,0x81,0x00,0x08,0x7C,0x9F,0x23,0x78,0x93,0xA1,0x00,0x0C,0x90,0x01,0x00,0x1C,0x3B,0xA0,0x00,0x00,0x7C,0x1D,0xF8,0x40,0x40,0x80,0x00,0x20,0x57,0xBC,0x10,0x3A,0x7C,0x3E,0xE4,0x2E };
// Alternative FFL endian swap signature (Mario Kart 8 and possibly other titles)
// Same algorithm as above but with a different compiler-scheduled prologue ordering
uint8 ffl_floatArrayEndianSwap_v2[] = { 0x7C,0x08,0x02,0xA6,0x94,0x21,0xFF,0xE8,0x93,0xE1,0x00,0x14,0x93,0xA1,0x00,0x0C,0x7C,0x9F,0x23,0x78,0x93,0x81,0x00,0x08,0x93,0xC1,0x00,0x10,0x90,0x01,0x00,0x1C,0x3B,0xA0,0x00,0x00,0x7C,0x1D,0xF8,0x40,0x7C,0x7E,0x1B,0x78,0x40,0x80,0x00,0x20,0x57,0xBC,0x10,0x3A,0x7C,0x3E,0xE4,0x2E };
uint8 xcx_enterCriticalSectionSignature[] = { 0x94,0x21,0xFF,0xE0,0xBF,0x41,0x00,0x08,0x7C,0x08,0x02,0xA6,0x90,0x01,0x00,0x24,0x7C,0x7E,0x1B,0x78,0x80,0x1E,0x00,0x08,0x2C,0x00,0x00,0x00,0x41,0x82,0x00,0xC0,0x48,0x01,0xD7,0xA1,0x7C,0x7A,0x1B,0x79,0x41,0x82,0x00,0xB4,0x81,0x3E,0x00,0x04,0x7C,0x09,0xD0,0x40,0x40,0x82,0x00,0x2C,0x7D,0x20,0xF0,0x28,0x7C,0x00,0xF0,0x6C };
uint8 xcx_enterCriticalSectionMask[] = { 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF };
@ -361,11 +365,23 @@ void GamePatch_scan()
hleAddr = hle_locate(ffl_floatArrayEndianSwap, NULL, sizeof(ffl_floatArrayEndianSwap));
if (hleAddr)
{
cemuLog_logDebug(LogType::Force, "HLE: Hook FFL float array endian swap function at 0x{:08x}", hleAddr);
cemuLog_logDebug(LogType::Force, "HLE: Hook FFL float array endian swap function (v1) at 0x{:08x}", hleAddr);
sint32 functionIndex = hleIndex_h000000003;
uint32 opcode = (1 << 26) | (functionIndex); // opcode for HLE: 0x1000 + FunctionIndex
memory_write<uint32>(hleAddr, opcode);
}
else
{
// Try v2 signature (Mario Kart 8 and possibly other titles with reordered prologue)
hleAddr = hle_locate(ffl_floatArrayEndianSwap_v2, NULL, sizeof(ffl_floatArrayEndianSwap_v2));
if (hleAddr)
{
cemuLog_logDebug(LogType::Force, "HLE: Hook FFL float array endian swap function (v2) at 0x{:08x}", hleAddr);
sint32 functionIndex = hleIndex_h000000003;
uint32 opcode = (1 << 26) | (functionIndex); // opcode for HLE: 0x1000 + FunctionIndex
memory_write<uint32>(hleAddr, opcode);
}
}
// XCX freeze workaround
//hleAddr = hle_locate(xcx_enterCriticalSectionSignature, xcx_enterCriticalSectionMask, sizeof(xcx_enterCriticalSectionSignature));