port gdbserver

common.py

@@ -2,13 +2,14 @@
 
 import argparse
 import base64
+import glob
 import imp
-import re
-import subprocess
 import os
+import re
 import shlex
 import signal
 import stat
+import subprocess
 import sys
 
 this = sys.modules[__name__]
@@ -151,6 +152,10 @@ def get_stats(stat_re=None, stats_file=None):
                     ret.append(cols[1])
     return ret
 
+def get_toolchain_tool(tool):
+    global this
+    return glob.glob(os.path.join(this.host_bin_dir, '*-buildroot-*-{}'.format(tool)))[0]
+
 def print_cmd(cmd, cmd_file=None, extra_env=None):
     """
     Format a command given as a list of strings so that it can

rungdbserver

@@ -1,20 +1,26 @@
-#!/usr/bin/env bash
-. "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/common"
-while getopts "${common_getopts_flags}" OPT; do
-  case "$OPT" in
-    ?)
-      common_getopts_case "$OPT"
-      ;;
-  esac
-done
-shift "$(($OPTIND - 1))"
-executable="$1"
-common_setup
-"${common_host_dir}/usr/bin/${common_arch}-linux-gdb" \
-  -q \
-  -ex "set sysroot ${common_buildroot_out_dir}/staging" \
-  -ex "target remote localhost:${common_qemu_hostfwd_generic_port}" \
-  -ex 'tb main' \
-  -ex 'c' \
-  "${common_build_dir}/${executable}" \
-;
+#!/usr/bin/env python3
+
+import glob
+import os
+import subprocess
+import sys
+
+import common
+
+parser = common.get_argparse(argparse_args={
+    'description':'Connect to gdbserver running on the guest.'
+})
+parser.add_argument(
+    'executable',
+    help='''Path to the executable to be debugged relative to the Buildroot build directory.'''
+)
+args = common.setup(parser)
+sys.exit(subprocess.Popen([
+  common.get_toolchain_tool('gdb'),
+  '-q',
+  '-ex', 'set sysroot {}'.format(common.staging_dir),
+  '-ex', 'target remote localhost:{}'.format(common.qemu_hostfwd_generic_port),
+  '-ex', 'tbreak main',
+  '-ex', 'continue',
+  os.path.join(common.build_dir, args.executable),
+]).wait())

runtc

@@ -1,6 +1,5 @@
 #!/usr/bin/env python3
 
-import glob
 import os
 import subprocess
 import sys
@@ -10,10 +9,10 @@ import common
 parser = common.get_argparse(argparse_args={
     'description':'''Run a Buildroot ToolChain tool like readelf or objdump.
 
-For example, to run `readelf -h` for the `arm` architecture, use:
+For example, to get some information about the arm vmlinux:
 
 ....
-./%(prog)s -a arm readelf -- -h
+./%(prog)s readelf -- -e "$(./getvar vmlinux)"
 ....
 
 Get the list of available tools with:
@@ -32,6 +31,4 @@ parser.add_argument(
     nargs='*'
 )
 args = common.setup(parser)
-paths = glob.glob(os.path.join(common.host_bin_dir, '*-buildroot-*-{}'.format(args.tool)))
-assert len(paths) == 1
-sys.exit(subprocess.Popen(paths + args.extra_args).wait())
+sys.exit(subprocess.Popen([common.get_toolchain_tool(args.tool)] + args.extra_args).wait())