Adding changes to support GNU style archive library reading

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167853 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 22 insertions, 0 deletions

diff --git a/tools/llvm-nm/llvm-nm.cpp b/tools/llvm-nm/llvm-nm.cpp
index 0543e83f9c..153de95293 100644
--- a/tools/llvm-nm/llvm-nm.cpp
+++ b/tools/llvm-nm/llvm-nm.cpp
@@ -113,6 +113,10 @@ namespace {
   cl::opt<bool> WithoutAliases("without-aliases", cl::Hidden,
                                cl::desc("Exclude aliases from output"));
 
+  cl::opt<bool> ArchiveMap("print-armap",
+    cl::desc("Print the archive map"));
+  cl::alias ArchiveMaps("s", cl::desc("Alias for --print-armap"),
+                                 cl::aliasopt(ArchiveMap));
   bool PrintAddress = true;
 
   bool MultipleFiles = false;
@@ -346,6 +350,24 @@ static void DumpSymbolNamesFromFile(std::string &Filename) {
       return;
 
     if (object::Archive *a = dyn_cast<object::Archive>(arch.get())) {
+      if (ArchiveMap) {
+        outs() << "Archive map" << "\n";
+        for (object::Archive::symbol_iterator i = a->begin_symbols(), 
+             e = a->end_symbols(); i != e; ++i) {
+          object::Archive::child_iterator c;
+          StringRef symname;
+          StringRef filename;
+          if (error(i->getMember(c))) 
+              return;
+          if (error(i->getName(symname)))
+              return;
+          if (error(c->getName(filename)))
+              return;
+          outs() << symname << " in " << filename << "\n";
+        }
+        outs() << "\n";
+      }
+
       for (object::Archive::child_iterator i = a->begin_children(),
                                            e = a->end_children(); i != e; ++i) {
         OwningPtr<Binary> child;