[Lldb-commits] [lldb] r176610 - 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.

[Greg Clayton]

Author: gclayton
Date: Wed Mar  6 20:57:54 2013
New Revision: 176610

URL: http://llvm.org/viewvc/llvm-project?rev=176610&view=rev
Log:
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.


Added:
    lldb/trunk/examples/python/lldb_module_utils.py

Added: lldb/trunk/examples/python/lldb_module_utils.py
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/examples/python/lldb_module_utils.py?rev=176610&view=auto
==============================================================================
--- lldb/trunk/examples/python/lldb_module_utils.py (added)
+++ lldb/trunk/examples/python/lldb_module_utils.py Wed Mar  6 20:57:54 2013
@@ -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'
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