Make GDB compile with Python 3 on MinGW

[thirdparty/binutils-gdb.git] / gdb / python / lib / gdb / __init__.py

diff --git a/gdb/python/lib/gdb/__init__.py b/gdb/python/lib/gdb/__init__.py
index af74df80c8aac48c9c017fa7f73a659e55e0dd6b..9c23970f39a341e3a45a785721de2bb07210d9ca 100644 (file)
--- a/gdb/python/lib/gdb/__init__.py
+++ b/gdb/python/lib/gdb/__init__.py
@@ -43,17 +43,17 @@ class _GdbFile (object):
     def flush(self):
         flush()
 
-class GdbOutputFile (_GdbFile):
+class _GdbOutputFile (_GdbFile):
     def write(self, s):
         write(s, stream=STDOUT)
 
-sys.stdout = GdbOutputFile()
+sys.stdout = _GdbOutputFile()
 
-class GdbOutputErrorFile (_GdbFile):
+class _GdbOutputErrorFile (_GdbFile):
     def write(self, s):
         write(s, stream=STDERR)
 
-sys.stderr = GdbOutputErrorFile()
+sys.stderr = _GdbOutputErrorFile()
 
 # Default prompt hook does nothing.
 prompt_hook = None
@@ -74,7 +74,7 @@ frame_filters = {}
 # Initial frame unwinders.
 frame_unwinders = []
 
-def execute_unwinders(pending_frame):
+def _execute_unwinders(pending_frame):
     """Internal function called from GDB to execute all unwinders.
 
     Runs each currently enabled unwinder until it finds the one that
@@ -106,6 +106,32 @@ def execute_unwinders(pending_frame):
 
     return None
 
+def _execute_file(filepath):
+    """This function is used to replace Python 2's PyRun_SimpleFile.
+
+    Loads and executes the given file.
+
+    We could use the runpy module, but its documentation says:
+    "Furthermore, any functions and classes defined by the executed code are
+    not guaranteed to work correctly after a runpy function has returned."
+    """
+    globals = sys.modules['__main__'].__dict__
+    set_file = False
+    # Set file (if not set) so that the imported file can use it (e.g. to
+    # access file-relative paths). This matches what PyRun_SimpleFile does.
+    if not hasattr(globals, '__file__'):
+        globals['__file__'] = filepath
+        set_file = True
+    try:
+        with open(filepath, 'rb') as file:
+            # We pass globals also as locals to match what Python does
+            # in PyRun_SimpleFile.
+            compiled = compile(file.read(), filepath, 'exec')
+            exec(compiled, globals, globals)
+    finally:
+        if set_file:
+            del globals['__file__']
+
 
 # Convenience variable to GDB's python directory
 PYTHONDIR = os.path.dirname(os.path.dirname(__file__))
@@ -124,7 +150,7 @@ packages = [
 # manually iterate the list, collating the Python files in each module
 # path.  Construct the module name, and import.
 
-def auto_load_packages():
+def _auto_load_packages():
     for package in packages:
         location = os.path.join(os.path.dirname(__file__), package)
         if os.path.exists(location):
@@ -144,7 +170,7 @@ def auto_load_packages():
                 except:
                     sys.stderr.write (traceback.format_exc() + "\n")
 
-auto_load_packages()
+_auto_load_packages()
 
 def GdbSetPythonDirectory(dir):
     """Update sys.path, reload gdb and auto-load packages."""
@@ -161,7 +187,7 @@ def GdbSetPythonDirectory(dir):
     # note that reload overwrites the gdb module without deleting existing
     # attributes
     reload(__import__(__name__))
-    auto_load_packages()
+    _auto_load_packages()
 
 def current_progspace():
     "Return the current Progspace."