blob: 18cc9b610783d1d8332847184fe72adcaa6c66ac [file] [log] [blame]
# This is gdbinit for source level debugging with -fdebug-compilation-dir
# compile option or when building with libc++.
python
import os
import subprocess
import sys
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)
libcxx_pretty_printers_loaded = False
def load_libcxx_pretty_printers(compile_dir):
global libcxx_pretty_printers_loaded
if libcxx_pretty_printers_loaded:
return
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
libcxx_pretty_printers = os.path.join(str(src_dir).rstrip(), 'third_party',
'libcxx-pretty-printers', 'src')
if not os.path.isdir(libcxx_pretty_printers):
return
sys.path.insert(1, libcxx_pretty_printers)
from libcxx.v1.printers import register_libcxx_printers
register_libcxx_printers(None)
libcxx_pretty_printers_loaded = True
def newobj_handler(event):
compile_dir = os.path.dirname(event.new_objfile.filename)
if not compile_dir:
return
# 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)
load_libcxx_pretty_printers(compile_dir)
# Event hook for newly loaded objfiles.
# https://sourceware.org/gdb/onlinedocs/gdb/Events-In-Python.html
gdb.events.new_objfile.connect(newobj_handler)
end