diff options
| -rw-r--r-- | test/MC/MachO/ARM/llvm-objdump-macho-stripped.s | 5 | ||||
| -rw-r--r-- | tools/llvm-objdump/MachODump.cpp | 31 |
2 files changed, 34 insertions, 2 deletions
diff --git a/test/MC/MachO/ARM/llvm-objdump-macho-stripped.s b/test/MC/MachO/ARM/llvm-objdump-macho-stripped.s new file mode 100644 index 0000000..7fcec52 --- /dev/null +++ b/test/MC/MachO/ARM/llvm-objdump-macho-stripped.s @@ -0,0 +1,5 @@ +@ RUN: llvm-mc -triple=thumbv7-apple-ios -filetype=obj -o - < %s | llvm-objdump -d -macho -triple=thumbv7-apple-ios - | FileCheck %s + nop +# CHECK: 0: 00 bf nop +# We are checking that disassembly happens when there are no symbols. +# rdar://11460289 diff --git a/tools/llvm-objdump/MachODump.cpp b/tools/llvm-objdump/MachODump.cpp index 60c33f2..5e175a0 100644 --- a/tools/llvm-objdump/MachODump.cpp +++ b/tools/llvm-objdump/MachODump.cpp @@ -286,8 +286,10 @@ void llvm::DisassembleInputMachO(StringRef Filename) { // Read and register the symbol table data. InMemoryStruct<macho::SymtabLoadCommand> SymtabLC; - MachOObj->ReadSymtabLoadCommand(*SymtabLCI, SymtabLC); - MachOObj->RegisterStringTable(*SymtabLC); + if (SymtabLCI) { + MachOObj->ReadSymtabLoadCommand(*SymtabLCI, SymtabLC); + MachOObj->RegisterStringTable(*SymtabLC); + } std::vector<SectionRef> Sections; std::vector<SymbolRef> Symbols; @@ -498,6 +500,31 @@ void llvm::DisassembleInputMachO(StringRef Filename) { InstrAnalysis.get(), Start, DebugOut, FunctionMap, Functions); } } + if (!CFG && !symbolTableWorked) { + // Reading the symbol table didn't work, disassemble the whole section. + uint64_t SectAddress; + Sections[SectIdx].getAddress(SectAddress); + uint64_t SectSize; + Sections[SectIdx].getSize(SectSize); + uint64_t InstSize; + for (uint64_t Index = 0; Index < SectSize; Index += InstSize) { + MCInst Inst; + + if (DisAsm->getInstruction(Inst, InstSize, memoryObject, Index, + DebugOut, nulls())) { + outs() << format("%8" PRIx64 ":\t", SectAddress + Index); + + DumpBytes(StringRef(Bytes.data() + Index, InstSize)); + IP->printInst(&Inst, outs(), ""); + + outs() << "\n"; + } else { + errs() << "llvm-objdump: warning: invalid instruction encoding\n"; + if (InstSize == 0) + InstSize = 1; // skip illegible bytes + } + } + } if (CFG) { if (!symbolTableWorked) { |