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GhidraRPXLoader
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Ghidra 10.3 support

This commit is contained in:
GaryOderNichts 2023-07-25 21:44:25 +02:00 committed by Maschell
parent fc59d1cfb9
commit 992817018a
1 changed files with 15 additions and 6 deletions
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21
src/main/java/cafeloader/Cafe_ElfRelocationHandler.java
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@ -13,6 +13,8 @@ import ghidra.util.exception.NotFoundException;
import ghidra.program.model.symbol.ExternalLocation;
import ghidra.program.model.symbol.RefType;
import ghidra.program.model.symbol.SourceType;
import ghidra.program.model.reloc.Relocation.Status;
import ghidra.program.model.reloc.RelocationResult;
public class Cafe_ElfRelocationHandler extends ElfRelocationHandler {
@Override
@ -21,11 +23,11 @@ public class Cafe_ElfRelocationHandler extends ElfRelocationHandler {
}
@Override
public void relocate(ElfRelocationContext elfRelocationContext, ElfRelocation relocation,
public RelocationResult relocate(ElfRelocationContext elfRelocationContext, ElfRelocation relocation,
Address relocationAddress) throws MemoryAccessException, NotFoundException {
int type = relocation.getType();
if (type == Cafe_ElfRelocationConstants.R_PPC_NONE) {
return;
return RelocationResult.SKIPPED;
}
ElfHeader elf = elfRelocationContext.getElfHeader();
@ -39,6 +41,8 @@ public class Cafe_ElfRelocationHandler extends ElfRelocationHandler {
int oldValue = memory.getInt(relocationAddress);
int newValue = 0;
int byteLength = 4; // most relocations affect 4-bytes (change if different)
/*
* If the symbol is in a SHT_RPL_IMPORTS section then we must add a memory
* reference because it will be too far away for the actual relocation to
@ -91,14 +95,17 @@ public class Cafe_ElfRelocationHandler extends ElfRelocationHandler {
case Cafe_ElfRelocationConstants.R_PPC_ADDR16_LO:
newValue = symbolValue + addend;
memory.setShort(relocationAddress, (short) newValue);
byteLength = 2;
break;
case Cafe_ElfRelocationConstants.R_PPC_ADDR16_HI:
newValue = (symbolValue + addend) >> 16;
memory.setShort(relocationAddress, (short) newValue);
byteLength = 2;
break;
case Cafe_ElfRelocationConstants.R_PPC_ADDR16_HA:
newValue = (symbolValue + addend + 0x8000) >> 16;
memory.setShort(relocationAddress, (short) newValue);
byteLength = 2;
break;
case Cafe_ElfRelocationConstants.R_PPC_REL24:
newValue = (symbolValue + addend - offset) >> 2;
@ -115,14 +122,17 @@ public class Cafe_ElfRelocationHandler extends ElfRelocationHandler {
case Cafe_ElfRelocationConstants.R_PPC_GHS_REL16_HA:
newValue = (symbolValue + addend - offset + 0x8000) >> 16;
memory.setShort(relocationAddress, (short) newValue);
byteLength = 2;
break;
case Cafe_ElfRelocationConstants.R_PPC_GHS_REL16_HI:
newValue = (symbolValue + addend - offset) >> 16;
memory.setShort(relocationAddress, (short) newValue);
byteLength = 2;
break;
case Cafe_ElfRelocationConstants.R_PPC_GHS_REL16_LO:
newValue = (symbolValue + addend - offset);
memory.setShort(relocationAddress, (short) newValue);
byteLength = 2;
break;
case Cafe_ElfRelocationConstants.R_PPC_DTPREL32:
newValue = symbolValue + addend;
@ -143,10 +153,9 @@ public class Cafe_ElfRelocationHandler extends ElfRelocationHandler {
case Cafe_ElfRelocationConstants.R_PPC_DIAB_RELSDA_HI:
case Cafe_ElfRelocationConstants.R_PPC_DIAB_RELSDA_HA:
default:
String symbolName = sym.getNameAsString();
markAsUnhandled(program, relocationAddress, type, symbolIndex, symbolName,
elfRelocationContext.getLog());
break;
return RelocationResult.UNSUPPORTED;
}
return new RelocationResult(Status.APPLIED, byteLength);
}
}