Add support for dumping section headers to llvm-objdump. This uses the same
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
diff --git a/tools/llvm-objdump/llvm-objdump.cpp b/tools/llvm-objdump/llvm-objdump.cpp
index a8df3e5..3acf808 100644
--- a/tools/llvm-objdump/llvm-objdump.cpp
+++ b/tools/llvm-objdump/llvm-objdump.cpp
@@ -73,6 +73,16 @@
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 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 @@
if (InputFilenames.size() == 0)
InputFilenames.push_back("a.out");
- if (!Disassemble && !Relocations) {
+ if (!Disassemble && !Relocations && !SectionHeaders) {
cl::PrintHelpMessage();
return 2;
}