diff --git a/node.gyp b/node.gyp
index 1c3e29147140e7..84081b97ab4e65 100644
--- a/node.gyp
+++ b/node.gyp
@@ -172,6 +172,7 @@
 
       'dependencies': [
         'node_js2c#host',
+        'node_postmortem_metadata#host',
         'deps/nghttp2/nghttp2.gyp:nghttp2'
       ],
 
@@ -295,6 +296,7 @@
         # node.gyp is added to the project by default.
         'common.gypi',
         '<(SHARED_INTERMEDIATE_DIR)/node_javascript.cc',
+        '<(SHARED_INTERMEDIATE_DIR)/node-debug-support.cc',
       ],
 
       'defines': [
@@ -743,7 +745,29 @@
           'ldflags': [ '-I<(SHARED_INTERMEDIATE_DIR)' ]
         }],
       ]
-    }
+    },
+    {
+      'target_name': 'node_postmortem_metadata',
+      'type': 'none',
+      'toolsets': ['host'],
+      'actions': [
+        {
+          'action_name': 'gen-postmortem-metadata',
+          'process_outputs_as_sources': 1,
+          'inputs': [
+            './tools/gen-postmortem-metadata.py',
+          ],
+          'outputs': [
+            '<(SHARED_INTERMEDIATE_DIR)/node-debug-support.cc',
+          ],
+          'action': [
+            'python',
+            './tools/gen-postmortem-metadata.py',
+            '<@(_outputs)',
+          ]
+        }
+      ]
+    },
   ], # end targets
 
   'conditions': [
diff --git a/tools/gen-postmortem-metadata.py b/tools/gen-postmortem-metadata.py
new file mode 100644
index 00000000000000..ed8ee04fd3614e
--- /dev/null
+++ b/tools/gen-postmortem-metadata.py
@@ -0,0 +1,157 @@
+#!/usr/bin/env python
+
+#
+# gen-postmortem-metadata.py output_file.cc
+#
+# Creates debugging symbols to help naviage Node's internals using post-mortem
+# debugging tools.
+#
+
+import sys
+
+
+class DebugSymbol(object):
+  type_ = 'int'
+  _prefix = 'nodedbg_'
+
+  def __init__(self, name, value, headers=[], type_=None):
+    self.name = name
+    self.value = value
+    self.headers = headers
+    self.type_ = type_ or DebugSymbol.type_
+
+  @classmethod
+  def get_headers(cls, debug_symbols):
+    '''
+    Return a list of headers without duplicates, preserving the order they were
+    declared
+    '''
+    seen = set()
+    headers = [debug_symbol.headers for debug_symbol in debug_symbols]
+    headers = sum(headers, [])
+
+    result = []
+    for h in headers:
+      if not h in seen:
+        seen.add(h)
+        result.append(h)
+
+    return result
+
+  def __str__(self):
+    return '{type} {prefix}{name} = {value};'.format(
+      type=self.type_,
+      prefix=self._prefix,
+      name=self.name,
+      value=self.value,
+    )
+
+
+debug_symbols = [
+  DebugSymbol(
+    name='environment_context_idx_embedder_data',
+    value='Environment::kContextEmbedderDataIndex',
+    headers=['env.h'],
+    type_='int',
+  ),
+  DebugSymbol(
+    name='class__BaseObject__persistent_handle',
+    value='offsetof(BaseObject, persistent_handle_)',
+    headers=['base-object.h', 'base-object-inl.h'],
+    type_='size_t',
+  ),
+  DebugSymbol(
+    name='class__Environment__handleWrapQueue',
+    value='offsetof(Environment, handle_wrap_queue_)',
+    headers=['env.h'],
+    type_='size_t',
+  ),
+  DebugSymbol(
+    name='class__HandleWrap__node',
+    value='offsetof(HandleWrap, handle_wrap_queue_)',
+    headers=['handle_wrap.h'],
+    type_='size_t',
+  ),
+  DebugSymbol(
+    name='class__HandleWrapQueue__headOffset',
+    value='offsetof(Environment::HandleWrapQueue, head_)',
+    headers=['env.h'],
+    type_='size_t',
+  ),
+  DebugSymbol(
+    name='class__HandleWrapQueue__nextOffset',
+    value='offsetof(ListNode<HandleWrap>, next_)',
+    headers=['handle_wrap.h', 'util.h'],
+    type_='size_t',
+  ),
+  DebugSymbol(
+    name='class__Environment__reqWrapQueue',
+    value='offsetof(Environment, req_wrap_queue_)',
+    headers=['env.h'],
+    type_='size_t',
+  ),
+  DebugSymbol(
+    name='class__ReqWrap__node',
+    value='offsetof(ReqWrap<uv_req_t>, req_wrap_queue_)',
+    headers=['req-wrap.h'],
+    type_='size_t',
+  ),
+  DebugSymbol(
+    name='class__ReqWrapQueue__headOffset',
+    value='offsetof(Environment::ReqWrapQueue, head_)',
+    headers=['env.h'],
+    type_='size_t',
+  ),
+  DebugSymbol(
+    name='class__ReqWrapQueue__nextOffset',
+    value='offsetof(ListNode<ReqWrap<uv_req_t>>, next_)',
+    headers=['req-wrap.h', 'util.h'],
+    type_='size_t',
+  ),
+]
+
+
+template = '''
+/*
+ * This file is generated by {filename}.  Do not edit directly.
+ */
+
+#define _ALLOW_KEYWORD_MACROS 1
+#define private public
+#define protected public
+
+{includes}
+
+using namespace node;
+
+extern "C" {{
+{symbols}
+}}
+
+#undef private
+#undef protected
+#undef _ALLOW_KEYWORD_MACROS
+'''
+
+
+def create_symbols_file():
+  out = file(sys.argv[1], 'w')
+  headers = DebugSymbol.get_headers(debug_symbols)
+  includes = ['#include "{0}"'.format(header) for header in headers]
+  includes = '\n'.join(includes)
+
+  symbols = '\n'.join([str(symbol) for symbol in debug_symbols])
+
+  out.write(template.format(
+    filename=sys.argv[0],
+    includes=includes,
+    symbols=symbols,
+  ))
+
+
+if len(sys.argv) < 2:
+  print('usage: {0} output.cc'.format(sys.argv[0]))
+  sys.exit(2)
+
+
+create_symbols_file()