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GP-2703 revised ELF relocation processing to handle statically linked

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binaries and adjusted post-relocation read-only memory fixup.
This commit is contained in:
ghidra1
2022-10-14 17:15:47 -04:00
parent 0b17f7d095
commit 6b9bd6c220
19 changed files with 210 additions and 213 deletions
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4
Ghidra/Processors/PowerPC/src/main/java/ghidra/app/util/bin/format/elf/relocation/PowerPC64_ElfRelocationHandler.java
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@@ -65,8 +65,8 @@ public class PowerPC64_ElfRelocationHandler extends ElfRelocationHandler {
long offset = relocationAddress.getOffset();
ElfSymbol sym = elfRelocationContext.getSymbol(symbolIndex);
String symbolName = sym.getNameAsString();
ElfSymbol sym = elfRelocationContext.getSymbol(symbolIndex); // may be null
String symbolName = elfRelocationContext.getSymbolName(symbolIndex);
Address symbolAddr = elfRelocationContext.getSymbolAddress(sym);
long symbolValue = elfRelocationContext.getSymbolValue(sym);

8
Ghidra/Processors/PowerPC/src/main/java/ghidra/app/util/bin/format/elf/relocation/PowerPC_ElfRelocationHandler.java
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@@ -79,7 +79,7 @@ public class PowerPC_ElfRelocationHandler extends ElfRelocationHandler {
int offset = (int) relocationAddress.getOffset();
ElfSymbol sym = elfRelocationContext.getSymbol(symbolIndex);
ElfSymbol sym = elfRelocationContext.getSymbol(symbolIndex); // may be null
// if (sym.isLocal() && sym.getSectionHeaderIndex() != ElfSectionHeaderConstants.SHN_UNDEF) {
//
@@ -95,7 +95,7 @@ public class PowerPC_ElfRelocationHandler extends ElfRelocationHandler {
Address symbolAddr = (elfRelocationContext.getSymbolAddress(sym));
int symbolValue = (int) elfRelocationContext.getSymbolValue(sym);
// }
String symbolName = sym.getNameAsString();
String symbolName = elfRelocationContext.getSymbolName(symbolIndex);
int oldValue = memory.getInt(relocationAddress);
int newValue = 0;
@@ -252,14 +252,14 @@ public class PowerPC_ElfRelocationHandler extends ElfRelocationHandler {
gprID = 0;
}
else if (MemoryBlock.EXTERNAL_BLOCK_NAME.equals(blockName)) {
markAsError(program, relocationAddress, type, sym.getNameAsString(),
markAsError(program, relocationAddress, type, symbolName,
"Unsupported relocation for external symbol",
ppcRelocationContext.getLog());
break;
}
}
if (gprID == null || sdaBase == null) {
markAsError(program, relocationAddress, type, sym.getNameAsString(),
markAsError(program, relocationAddress, type, symbolName,
"Failed to identfy appropriate data block", ppcRelocationContext.getLog());
break;
}