blob: 78d39336ebcdc279a13fff48f94d26d7ab689a6d [file] [log] [blame]
# Copyright 2018 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
python
import os
import subprocess
import sys
compile_dirs = set()
def get_current_debug_file_directories():
dir = gdb.execute("show debug-file-directory", to_string=True)
dir = dir[
len('The directory where separate debug symbols are searched for is "'
):-len('".') - 1]
return set(dir.split(":"))
def add_debug_file_directory(dir):
# gdb has no function to add debug-file-directory, simulates that by using
# `show debug-file-directory` and `set debug-file-directory <directories>`.
current_dirs = get_current_debug_file_directories()
current_dirs.add(dir)
gdb.execute(
"set debug-file-directory %s" % ":".join(current_dirs), to_string=True)
def load_libcxx_pretty_printers(src_dir):
libcxx_pretty_printers = os.path.join(src_dir, 'third_party',
'libcxx-pretty-printers')
if not os.path.isdir(libcxx_pretty_printers):
return
sys.path.insert(1, libcxx_pretty_printers)
from printers import register_libcxx_printers
register_libcxx_printers(None)
def load_gdb_chrome(src_dir):
tools_gdb = os.path.join(src_dir, 'tools', 'gdb')
sys.path.insert(1, tools_gdb)
import gdb_chrome
gdb.execute('source %s' % os.path.join(tools_gdb, 'viewg.gdb'))
def newobj_handler(event):
global compile_dirs
compile_dir = os.path.dirname(event.new_objfile.filename)
if not compile_dir:
return
if compile_dir in compile_dirs:
return
compile_dirs.add(compile_dir)
# Add source path
gdb.execute("dir %s" % compile_dir)
# Need to tell the location of .dwo files.
# https://sourceware.org/gdb/onlinedocs/gdb/Separate-Debug-Files.html
# https://crbug.com/603286#c35
add_debug_file_directory(compile_dir)
git = subprocess.Popen(
['git', '-C', compile_dir, 'rev-parse', '--show-toplevel'],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
src_dir, _ = git.communicate()
if git.returncode:
return
if isinstance(src_dir, str):
src_dir = src_dir.rstrip()
else:
src_dir = src_dir.decode('utf-8').rstrip()
load_libcxx_pretty_printers(src_dir)
load_gdb_chrome(src_dir)
# Event hook for newly loaded objfiles.
# https://sourceware.org/gdb/onlinedocs/gdb/Events-In-Python.html
gdb.events.new_objfile.connect(newobj_handler)
gdb.execute("set environment CHROMIUM_GDBINIT_SOURCED=1")
end