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Add dump of Win64 EH unwind data.

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The new command line option -unwind-info dumps the Win64 EH unwind
data to the console. This is a nice feature if you need to debug
generated EH data (e.g. from LLVM). Includes a test case.

Initial patch by João Matos, extensions and rework by Kai Nacke.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169415 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael J. Spencer
2012-12-05 20:12:35 +00:00
parent 717a142823
commit eef7b6219e
5 changed files with 497 additions and 3 deletions
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29
tools/llvm-objdump/llvm-objdump.cpp
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@ -104,9 +104,16 @@ static cl::opt<bool>
NoShowRawInsn("no-show-raw-insn", cl::desc("When disassembling instructions, "
"do not print the instruction bytes."));
static cl::opt<bool>
UnwindInfo("unwind-info", cl::desc("Display unwind information"));
static cl::alias
UnwindInfoShort("u", cl::desc("Alias for --unwind-info"),
cl::aliasopt(UnwindInfo));
static StringRef ToolName;
static bool error(error_code ec) {
bool llvm::error(error_code ec) {
if (!ec) return false;
outs() << ToolName << ": error reading file: " << ec.message() << ".\n";
@ -165,7 +172,7 @@ void llvm::DumpBytes(StringRef bytes) {
outs() << output;
}
static bool RelocAddressLess(RelocationRef a, RelocationRef b) {
bool llvm::RelocAddressLess(RelocationRef a, RelocationRef b) {
uint64_t a_addr, b_addr;
if (error(a.getAddress(a_addr))) return false;
if (error(b.getAddress(b_addr))) return false;
@ -573,6 +580,19 @@ static void PrintSymbolTable(const ObjectFile *o) {
}
}
static void PrintUnwindInfo(const ObjectFile *o) {
outs() << "Unwind info:\n\n";
if (const COFFObjectFile *coff = dyn_cast<COFFObjectFile>(o)) {
printCOFFUnwindInfo(coff);
} else {
// TODO: Extract DWARF dump tool to objdump.
errs() << "This operation is only currently supported "
"for COFF object files.\n";
return;
}
}
static void DumpObject(const ObjectFile *o) {
outs() << '\n';
outs() << o->getFileName()
@ -588,6 +608,8 @@ static void DumpObject(const ObjectFile *o) {
PrintSectionContents(o);
if (SymbolTable)
PrintSymbolTable(o);
if (UnwindInfo)
PrintUnwindInfo(o);
}
/// @brief Dump each object file in \a a;
@ -666,7 +688,8 @@ int main(int argc, char **argv) {
&& !Relocations
&& !SectionHeaders
&& !SectionContents
&& !SymbolTable) {
&& !SymbolTable
&& !UnwindInfo) {
cl::PrintHelpMessage();
return 2;
}