[LLDB] added getName method in SBModule (#150331)

added getName method in SBModule.h and .cpp in order to get the name of
the module from m_object_name.

---------

Co-authored-by: Bar Soloveychik <[email protected]>

Author: barsolo2000

lldb/include/lldb/API/SBModule.h

@@ -296,6 +296,11 @@ class LLDB_API SBModule {
   /// Remove any global modules which are no longer needed.
   static void GarbageCollectAllocatedModules();
 
+  /// If this Module represents a specific object or part within a larger file,
+  /// returns the name of that object or part. Otherwise, returns
+  /// nullptr.
+  const char *GetObjectName() const;
+
 private:
   friend class SBAddress;
   friend class SBFrame;

lldb/source/API/SBModule.cpp

@@ -671,3 +671,11 @@ void SBModule::GarbageCollectAllocatedModules() {
   const bool mandatory = false;
   ModuleList::RemoveOrphanSharedModules(mandatory);
 }
+
+const char *SBModule::GetObjectName() const {
+  LLDB_INSTRUMENT_VA(this);
+
+  if (!m_opaque_sp)
+    return nullptr;
+  return m_opaque_sp->GetObjectName().AsCString();
+}

lldb/test/API/python_api/sbmodule/Makefile

@@ -1,3 +1,12 @@
-C_SOURCES := main.c
+C_SOURCES := main.c a.c b.c
+MAKE_DSYM := NO
+
+all: a.out 
+
+a.out: main.o libfoo.a
+	$(LD) $(LDFLAGS) $^ -o $@
+
+libfoo.a: a.o b.o
+	$(AR) $(ARFLAGS) $@ $^
 
 include Makefile.rules

lldb/test/API/python_api/sbmodule/TestSBModule.py

@@ -18,6 +18,45 @@ def tearDown(self):
         if self.background_pid:
             os.kill(self.background_pid, signal.SIGKILL)
 
+    @skipIfRemote
+    def test_GetObjectName(self):
+        """Test the SBModule::GetObjectName() method"""
+        self.build()
+        exe = self.getBuildArtifact("a.out")
+        libfoo_path = self.getBuildArtifact("libfoo.a")
+        target_exe = self.dbg.CreateTarget(exe)
+        self.assertTrue(target_exe.IsValid(), "Target for a.out is valid")
+
+        # Test that the executable module has no object name (usually the first module in the target)
+        exe_module = target_exe.GetModuleAtIndex(0)
+        self.assertTrue(exe_module.IsValid(), "Executable module is valid")
+        self.assertIsNone(
+            exe_module.GetObjectName(), "a.out should have no object name"
+        )
+
+        # check archive member names
+        module_specs = lldb.SBModuleSpecList.GetModuleSpecifications(libfoo_path)
+        self.assertGreater(
+            module_specs.GetSize(), 0, "Archive should have at least one module spec"
+        )
+        found = set()
+        expected = {"a.o", "b.o"}
+        for i in range(module_specs.GetSize()):
+            spec = module_specs.GetSpecAtIndex(i)
+            obj_name = spec.GetObjectName()
+            self.assertIsInstance(obj_name, str)
+            self.assertIn(obj_name, expected, f"Unexpected object name: {obj_name}")
+            # create a module from the arhive using the sepc
+            module = lldb.SBModule(spec)
+            self.assertTrue(module.IsValid(), "Module is valid")
+            self.assertTrue(module.IsValid(), f"Module for {obj_name} is valid")
+            self.assertEqual(
+                module.GetObjectName(), obj_name, f"Object name for {obj_name} matches"
+            )
+            found.add(obj_name)
+
+        self.assertEqual(found, expected, "Did not find all expected archive members")
+
     @skipUnlessDarwin
     @skipIfRemote
     def test_module_is_file_backed(self):

lldb/test/API/python_api/sbmodule/a.c

@@ -0,0 +1,11 @@
+int __a_global = 1;
+
+int a(int arg) {
+  int result = arg + __a_global;
+  return result;
+}
+
+int aa(int arg1) {
+  int result1 = arg1 - __a_global;
+  return result1;
+}

lldb/test/API/python_api/sbmodule/b.c

@@ -0,0 +1,11 @@
+static int __b_global = 2;
+char __extra[4096]; // Make sure sizeof b.o differs from a.o
+int b(int arg) {
+  int result = arg + __b_global;
+  return result;
+}
+
+int bb(int arg1) {
+  int result2 = arg1 - __b_global;
+  return result2;
+}

lldb/test/API/python_api/sbmodule/main.c

@@ -1,3 +1,5 @@
+extern int a(int);
+extern int b(int);
 int main() {
   while (1) // break here
     ;