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Add another PSP module patching util.

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Jean-Philip Desjardins 2023-06-02 16:24:09 -04:00
parent 1a80134a11
commit 331b14c174
1 changed files with 23 additions and 0 deletions
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23
tools/PsfPlayer/Source/psp/PspBios.cpp
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@ -403,6 +403,29 @@ void CBios::PatchModule(CELF32* module)
reinterpret_cast<uint32*>(data + relocationPos)[1] = ELF::R_MIPS_26;
assembler.JAL(targetAddress);
};
auto emitLoadAddress = [&](CMIPSAssembler& assembler, CMIPS::REGISTER dstReg, uint32 codeBaseAddress, uint32 targetAddress) {
int16 low = static_cast<int16>(targetAddress & 0xFFFF);
uint16 high = (targetAddress - low) >> 16;
{
assert(!availableRelocations.empty());
uint32 relocationPos = availableRelocations.back();
availableRelocations.pop_back();
reinterpret_cast<uint32*>(data + relocationPos)[0] = codeBaseAddress + (assembler.GetProgramSize() * 4);
reinterpret_cast<uint32*>(data + relocationPos)[1] = ELF::R_MIPS_HI16;
assembler.LUI(dstReg, high);
}
{
assert(!availableRelocations.empty());
uint32 relocationPos = availableRelocations.back();
availableRelocations.pop_back();
reinterpret_cast<uint32*>(data + relocationPos)[0] = codeBaseAddress + (assembler.GetProgramSize() * 4);
reinterpret_cast<uint32*>(data + relocationPos)[1] = ELF::R_MIPS_LO16;
assembler.ADDIU(dstReg, dstReg, low);
}
};
}
void CBios::LoadModule(const char* path)