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Merge pull request #12351 from TryTwo/bugfix_data_symbols

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PPCSymbolDB. Bugfix. Fix .data symbols not loading
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Mai 2023-12-03 11:17:44 -05:00 committed by GitHub
commit 98eda4dc9f
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 26 additions and 14 deletions
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40
Source/Core/Core/PowerPC/PPCSymbolDB.cpp
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@ -408,27 +408,39 @@ bool PPCSymbolDB::LoadMap(const Core::CPUThreadGuard& guard, const std::string&
// Check if this is a valid entry.
if (strlen(name) > 0)
{
// Can't compute the checksum if not in RAM
bool good = !bad && PowerPC::MMU::HostIsInstructionRAMAddress(guard, vaddress) &&
PowerPC::MMU::HostIsInstructionRAMAddress(guard, vaddress + size - 4);
if (!good)
bool good;
const Common::Symbol::Type type = section_name == ".text" || section_name == ".init" ?
Common::Symbol::Type::Function :
Common::Symbol::Type::Data;
if (type == Common::Symbol::Type::Function)
{
// check for BLR before function
PowerPC::TryReadInstResult read_result =
guard.GetSystem().GetMMU().TryReadInstruction(vaddress - 4);
if (read_result.valid && read_result.hex == 0x4e800020)
// Can't compute the checksum if not in RAM
good = !bad && PowerPC::MMU::HostIsInstructionRAMAddress(guard, vaddress) &&
PowerPC::MMU::HostIsInstructionRAMAddress(guard, vaddress + size - 4);
if (!good)
{
// check for BLR at end of function
read_result = guard.GetSystem().GetMMU().TryReadInstruction(vaddress + size - 4);
good = read_result.valid && read_result.hex == 0x4e800020;
// check for BLR before function
PowerPC::TryReadInstResult read_result =
guard.GetSystem().GetMMU().TryReadInstruction(vaddress - 4);
if (read_result.valid && read_result.hex == 0x4e800020)
{
// check for BLR at end of function
read_result = guard.GetSystem().GetMMU().TryReadInstruction(vaddress + size - 4);
good = read_result.valid && read_result.hex == 0x4e800020;
}
}
}
else
{
// Data type, can have any length.
good = !bad && PowerPC::MMU::HostIsRAMAddress(guard, vaddress) &&
PowerPC::MMU::HostIsRAMAddress(guard, vaddress + size - 1);
}
if (good)
{
++good_count;
const Common::Symbol::Type type = section_name == ".text" || section_name == ".init" ?
Common::Symbol::Type::Function :
Common::Symbol::Type::Data;
AddKnownSymbol(guard, vaddress, size, name, type);
}
else