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GP-1036 EXTERNAL Block Offset-Reference refactor

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ghidra1
2022-03-08 05:08:02 -05:00
parent 332480a422
commit 2bced1cd43
43 changed files with 461 additions and 216 deletions
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9
Ghidra/Processors/PowerPC/src/main/java/ghidra/app/util/bin/format/elf/relocation/PowerPC64_ElfRelocationHandler.java
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@@ -222,12 +222,13 @@ public class PowerPC64_ElfRelocationHandler extends ElfRelocationHandler {
case PowerPC64_ElfRelocationConstants.R_PPC64_UADDR64:
case PowerPC64_ElfRelocationConstants.R_PPC64_ADDR64:
case PowerPC64_ElfRelocationConstants.R_PPC64_GLOB_DAT:
if (addend != 0 && isUnsupportedExternalRelocation(program, relocationAddress,
symbolAddr, symbolName, addend, elfRelocationContext.getLog())) {
addend = 0; // prefer bad fixup for EXTERNAL over really-bad fixup
}
value64 = symbolValue + addend;
memory.setLong(relocationAddress, value64);
if (addend != 0) {
warnExternalOffsetRelocation(program, relocationAddress,
symbolAddr, symbolName, addend, elfRelocationContext.getLog());
applyComponentOffsetPointer(program, relocationAddress, addend);
}
break;
case PowerPC64_ElfRelocationConstants.R_PPC64_TOC:
memory.setLong(relocationAddress, toc);

9
Ghidra/Processors/PowerPC/src/main/java/ghidra/app/util/bin/format/elf/relocation/PowerPC_ElfRelocationHandler.java
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@@ -91,12 +91,13 @@ public class PowerPC_ElfRelocationHandler extends ElfRelocationHandler {
case PowerPC_ElfRelocationConstants.R_PPC_ADDR32:
case PowerPC_ElfRelocationConstants.R_PPC_UADDR32:
case PowerPC_ElfRelocationConstants.R_PPC_GLOB_DAT:
if (addend != 0 && isUnsupportedExternalRelocation(program, relocationAddress,
symbolAddr, symbolName, addend, elfRelocationContext.getLog())) {
addend = 0; // prefer bad fixup for EXTERNAL over really-bad fixup
}
newValue = symbolValue + addend;
memory.setInt(relocationAddress, newValue);
if (addend != 0) {
warnExternalOffsetRelocation(program, relocationAddress,
symbolAddr, symbolName, addend, elfRelocationContext.getLog());
applyComponentOffsetPointer(program, relocationAddress, addend);
}
break;
case PowerPC_ElfRelocationConstants.R_PPC_ADDR24:
newValue = (symbolValue + addend) >> 2;