rtemstoolkit: Add libdwarf C++ interface.

Provide a C++ interface to libdwarf to:
 - Manage DWARF debug data
 - Manage CU
 - Manage DIE
 - Handle CU line addresses
 - Handle CU source files

Update #3417

1 files changed, 16 insertions, 0 deletions

diff --git a/rtemstoolkit/rld-elf.cpp b/rtemstoolkit/rld-elf.cpp
index 8b2ac5e..2d3d090 100644
--- a/rtemstoolkit/rld-elf.cpp
+++ b/rtemstoolkit/rld-elf.cpp
@@ -421,6 +421,7 @@ namespace rld
 
     file::file ()
       : fd_ (-1),
+        refs (0),
         archive (false),
         writable (false),
         elf_ (0),
@@ -438,6 +439,18 @@ namespace rld
     }
 
     void
+    file::reference_obtain ()
+    {
+      ++refs;
+    }
+
+    void
+    file::reference_release ()
+    {
+      --refs;
+    }
+
+    void
     file::begin (const std::string& name__, int fd__, const bool writable_)
     {
       begin (name__, fd__, writable_, 0, 0);
@@ -551,6 +564,9 @@ namespace rld
     void
     file::end ()
     {
+      if (refs > 0)
+        throw rld::error ("References still held", "elf:file:end: " + name_);
+
       if (elf_)
       {
         if (rld::verbose () >= RLD_VERBOSE_FULL_DEBUG)