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Add support for dumping section headers to llvm-objdump. This uses the same

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flags as binutils objdump but the output is different, not just in format but
also showing different sections. Compare its results against readelf, not
objdump.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141579 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky
2011-10-10 21:21:34 +00:00
parent 735fe0f9d0
commit 023bb15bea
3 changed files with 117 additions and 1 deletions
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40
tools/llvm-objdump/llvm-objdump.cpp
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@@ -73,6 +73,16 @@ cl::opt<std::string>
llvm::ArchName("arch", cl::desc("Target arch to disassemble for, "
"see -version for available targets"));
static cl::opt<bool>
SectionHeaders("section-headers", cl::desc("Display summaries of the headers "
"for each section."));
static cl::alias
SectionHeadersShort("headers", cl::desc("Alias for --section-headers"),
cl::aliasopt(SectionHeaders));
static cl::alias
SectionHeadersShorter("h", cl::desc("Alias for --section-headers"),
cl::aliasopt(SectionHeaders));
static StringRef ToolName;
static bool error(error_code ec) {
@@ -281,11 +291,39 @@ static void PrintRelocations(const ObjectFile *o) {
}
}
static void PrintSectionHeaders(const ObjectFile *o) {
outs() << "Sections:\n"
"Idx Name Size Address Type\n";
error_code ec;
unsigned i = 0;
for (section_iterator si = o->begin_sections(), se = o->end_sections();
si != se; si.increment(ec)) {
if (error(ec)) return;
StringRef Name;
if (error(si->getName(Name))) return;
uint64_t Address;
if (error(si->getAddress(Address))) return;
uint64_t Size;
if (error(si->getSize(Size))) return;
bool Text, Data, BSS;
if (error(si->isText(Text))) return;
if (error(si->isData(Data))) return;
if (error(si->isBSS(BSS))) return;
std::string Type = (std::string(Text ? "TEXT " : "") +
(Data ? "DATA " : "") + (BSS ? "BSS" : ""));
outs() << format("%3d %-13s %09x %017x %s\n", i, Name.str().c_str(), Size,
Address, Type.c_str());
++i;
}
}
static void DumpObject(const ObjectFile *o) {
if (Disassemble)
DisassembleObject(o);
if (Relocations)
PrintRelocations(o);
if (SectionHeaders)
PrintSectionHeaders(o);
}
/// @brief Dump each object file in \a a;
@@ -356,7 +394,7 @@ int main(int argc, char **argv) {
if (InputFilenames.size() == 0)
InputFilenames.push_back("a.out");
if (!Disassemble && !Relocations) {
if (!Disassemble && !Relocations && !SectionHeaders) {
cl::PrintHelpMessage();
return 2;
}