aboutsummaryrefslogtreecommitdiffstats
path: root/tools
diff options
context:
space:
mode:
Diffstat (limited to 'tools')
-rw-r--r--tools/llvm-objdump/MachODump.cpp118
-rw-r--r--tools/macho-dump/macho-dump.cpp2
2 files changed, 113 insertions, 7 deletions
diff --git a/tools/llvm-objdump/MachODump.cpp b/tools/llvm-objdump/MachODump.cpp
index 1ee3e42..27e1623 100644
--- a/tools/llvm-objdump/MachODump.cpp
+++ b/tools/llvm-objdump/MachODump.cpp
@@ -87,12 +87,73 @@ struct SymbolSorter {
}
};
+// Types for the storted data in code table that is built before disassembly
+// and the predicate function to sort them.
+typedef std::pair<uint64_t, DiceRef> DiceTableEntry;
+typedef std::vector<DiceTableEntry> DiceTable;
+typedef DiceTable::iterator dice_table_iterator;
+
+static bool
+compareDiceTableEntries(const DiceTableEntry i,
+ const DiceTableEntry j) {
+ return i.first == j.first;
+}
+
+static void DumpDataInCode(const char *bytes, uint64_t Size,
+ unsigned short Kind) {
+ uint64_t Value;
+
+ switch (Kind) {
+ case macho::Data:
+ switch (Size) {
+ case 4:
+ Value = bytes[3] << 24 |
+ bytes[2] << 16 |
+ bytes[1] << 8 |
+ bytes[0];
+ outs() << "\t.long " << Value;
+ break;
+ case 2:
+ Value = bytes[1] << 8 |
+ bytes[0];
+ outs() << "\t.short " << Value;
+ break;
+ case 1:
+ Value = bytes[0];
+ outs() << "\t.byte " << Value;
+ break;
+ }
+ outs() << "\t@ KIND_DATA\n";
+ break;
+ case macho::JumpTable8:
+ Value = bytes[0];
+ outs() << "\t.byte " << Value << "\t@ KIND_JUMP_TABLE8";
+ break;
+ case macho::JumpTable16:
+ Value = bytes[1] << 8 |
+ bytes[0];
+ outs() << "\t.short " << Value << "\t@ KIND_JUMP_TABLE16";
+ break;
+ case macho::JumpTable32:
+ Value = bytes[3] << 24 |
+ bytes[2] << 16 |
+ bytes[1] << 8 |
+ bytes[0];
+ outs() << "\t.long " << Value << "\t@ KIND_JUMP_TABLE32";
+ break;
+ default:
+ outs() << "\t@ data in code kind = " << Kind << "\n";
+ break;
+ }
+}
+
static void
getSectionsAndSymbols(const macho::Header Header,
MachOObjectFile *MachOObj,
std::vector<SectionRef> &Sections,
std::vector<SymbolRef> &Symbols,
- SmallVectorImpl<uint64_t> &FoundFns) {
+ SmallVectorImpl<uint64_t> &FoundFns,
+ uint64_t &BaseSegmentAddress) {
error_code ec;
for (symbol_iterator SI = MachOObj->begin_symbols(),
SE = MachOObj->end_symbols(); SI != SE; SI.increment(ec))
@@ -108,6 +169,7 @@ getSectionsAndSymbols(const macho::Header Header,
MachOObjectFile::LoadCommandInfo Command =
MachOObj->getFirstLoadCommandInfo();
+ bool BaseSegmentAddressSet = false;
for (unsigned i = 0; ; ++i) {
if (Command.C.Type == macho::LCT_FunctionStarts) {
// We found a function starts segment, parse the addresses for later
@@ -117,6 +179,15 @@ getSectionsAndSymbols(const macho::Header Header,
MachOObj->ReadULEB128s(LLC.DataOffset, FoundFns);
}
+ else if (Command.C.Type == macho::LCT_Segment) {
+ macho::SegmentLoadCommand SLC =
+ MachOObj->getSegmentLoadCommand(Command);
+ StringRef SegName = SLC.Name;
+ if(!BaseSegmentAddressSet && SegName != "__PAGEZERO") {
+ BaseSegmentAddressSet = true;
+ BaseSegmentAddress = SLC.VMAddress;
+ }
+ }
if (i == Header.NumLoadCommands - 1)
break;
@@ -184,14 +255,32 @@ static void DisassembleInputMachO2(StringRef Filename,
std::vector<SectionRef> Sections;
std::vector<SymbolRef> Symbols;
SmallVector<uint64_t, 8> FoundFns;
+ uint64_t BaseSegmentAddress;
- getSectionsAndSymbols(Header, MachOOF, Sections, Symbols, FoundFns);
+ getSectionsAndSymbols(Header, MachOOF, Sections, Symbols, FoundFns,
+ BaseSegmentAddress);
// Make a copy of the unsorted symbol list. FIXME: duplication
std::vector<SymbolRef> UnsortedSymbols(Symbols);
// Sort the symbols by address, just in case they didn't come in that way.
std::sort(Symbols.begin(), Symbols.end(), SymbolSorter());
+ // Build a data in code table that is sorted on by the address of each entry.
+ uint64_t BaseAddress = 0;
+ if (Header.FileType == macho::HFT_Object)
+ Sections[0].getAddress(BaseAddress);
+ else
+ BaseAddress = BaseSegmentAddress;
+ DiceTable Dices;
+ error_code ec;
+ for (dice_iterator DI = MachOOF->begin_dices(), DE = MachOOF->end_dices();
+ DI != DE; DI.increment(ec)){
+ uint32_t Offset;
+ DI->getOffset(Offset);
+ Dices.push_back(std::make_pair(BaseAddress + Offset, *DI));
+ }
+ array_pod_sort(Dices.begin(), Dices.end());
+
#ifndef NDEBUG
raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
#else
@@ -309,12 +398,29 @@ static void DisassembleInputMachO2(StringRef Filename,
for (uint64_t Index = Start; Index < End; Index += Size) {
MCInst Inst;
+ uint64_t SectAddress = 0;
+ Sections[SectIdx].getAddress(SectAddress);
+ outs() << format("%8" PRIx64 ":\t", SectAddress + Index);
+
+ // Check the data in code table here to see if this is data not an
+ // instruction to be disassembled.
+ DiceTable Dice;
+ Dice.push_back(std::make_pair(SectAddress + Index, DiceRef()));
+ dice_table_iterator DTI = std::search(Dices.begin(), Dices.end(),
+ Dice.begin(), Dice.end(),
+ compareDiceTableEntries);
+ if (DTI != Dices.end()){
+ uint16_t Length;
+ DTI->second.getLength(Length);
+ DumpBytes(StringRef(Bytes.data() + Index, Length));
+ uint16_t Kind;
+ DTI->second.getKind(Kind);
+ DumpDataInCode(Bytes.data() + Index, Length, Kind);
+ continue;
+ }
+
if (DisAsm->getInstruction(Inst, Size, memoryObject, Index,
DebugOut, nulls())) {
- uint64_t SectAddress = 0;
- Sections[SectIdx].getAddress(SectAddress);
- outs() << format("%8" PRIx64 ":\t", SectAddress + Index);
-
DumpBytes(StringRef(Bytes.data() + Index, Size));
IP->printInst(&Inst, outs(), "");
diff --git a/tools/macho-dump/macho-dump.cpp b/tools/macho-dump/macho-dump.cpp
index 88fd452..897a785 100644
--- a/tools/macho-dump/macho-dump.cpp
+++ b/tools/macho-dump/macho-dump.cpp
@@ -292,7 +292,7 @@ DumpDataInCodeDataCommand(const MachOObjectFile &Obj,
<< " ('datasize', " << LLC.DataSize << ")\n"
<< " ('_data_regions', [\n";
- unsigned NumRegions = LLC.DataSize / 8;
+ unsigned NumRegions = LLC.DataSize / sizeof(macho::DataInCodeTableEntry);
for (unsigned i = 0; i < NumRegions; ++i) {
macho::DataInCodeTableEntry DICE =
Obj.getDataInCodeTableEntry(LLC.DataOffset, i);
generated by cgit v1.1 at 2025-01-08 17:12:40 +0000