From 923bedf52f96d47906e4972321bccb66242ce31e Mon Sep 17 00:00:00 2001
From: Greg Clayton <gclayton@apple.com>
Date: Thu, 7 Mar 2013 02:57:54 +0000
Subject: [PATCH] Added a new module that can dump all line tables for all
 compile units in any modules that are specified as arguments to the
 "dump_module_line_tables" command.

I used this to verify that the debug map line tables were the same as previous LLDB releases prior to my change in the DWARF in .o file linking.

llvm-svn: 176610
---
 lldb/examples/python/lldb_module_utils.py | 59 +++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 lldb/examples/python/lldb_module_utils.py

diff --git a/lldb/examples/python/lldb_module_utils.py b/lldb/examples/python/lldb_module_utils.py
new file mode 100644
index 000000000000..37f33ba416a5
--- /dev/null
+++ b/lldb/examples/python/lldb_module_utils.py
@@ -0,0 +1,59 @@
+#!/usr/bin/python
+
+import lldb
+import optparse
+import shlex
+import string
+import sys
+
+def create_dump_module_line_tables_options ():
+    usage = "usage: dump_module_line_tables [options] MODULE1 [MODULE2 ...]"
+    description='''Dumps all line tables from all compile units for any modules specified as arguments. Specifying the --verbose flag will output address ranges for each line entry.'''
+    parser = optparse.OptionParser(description=description, prog='start_gdb_log',usage=usage)
+    parser.add_option('-v', '--verbose', action='store_true', dest='verbose', help='Display verbose output.', default=False)
+    return parser
+    
+def dump_module_line_tables(debugger, command, result, dict):
+    '''Dumps all line tables from all compile units for any modules specified as arguments.'''
+    command_args = shlex.split(command)
+    
+    parser = create_dump_module_line_tables_options ()
+    try:
+        (options, args) = parser.parse_args(command_args)
+    except:
+        return
+    if command_args:
+        target = debugger.GetSelectedTarget()
+        lldb.target = target
+        for module_name in command_args:
+            result.PutCString('Searching for module "%s"' % (module_name,))
+            module_fspec = lldb.SBFileSpec (module_name, False)
+            module = target.FindModule (module_fspec);
+            if module:
+                for cu_idx in range (module.GetNumCompileUnits()):
+                    cu = module.GetCompileUnitAtIndex(cu_idx)
+                    result.PutCString("\n%s:" % (cu.file))
+                    for line_idx in range(cu.GetNumLineEntries()):
+                        line_entry = cu.GetLineEntryAtIndex(line_idx)
+                        start_file_addr = line_entry.addr.file_addr
+                        end_file_addr = line_entry.end_addr.file_addr
+                        # If the two addresses are equal, this line table entry is a termination entry
+                        if options.verbose:
+                            if start_file_addr != end_file_addr:
+                                result.PutCString('[%#x - %#x): %s' % (start_file_addr, end_file_addr, line_entry))
+                        else:
+                            if start_file_addr == end_file_addr:
+                                result.PutCString('%#x: END' % (start_file_addr))
+                            else:
+                                result.PutCString('%#x: %s' % (start_file_addr, line_entry))
+                        if start_file_addr == end_file_addr:
+                            result.Printf("\n")
+            else:
+                result.PutCString ("no module for '%s'" % module)
+    else:
+        result.PutCString ("error: invalid target")
+
+parser = create_dump_module_line_tables_options ()
+dump_module_line_tables.__doc__ = parser.format_help()
+lldb.debugger.HandleCommand('command script add -f %s.dump_module_line_tables dump_module_line_tables' % __name__)
+print 'Installed "dump_module_line_tables" command'
\ No newline at end of file