From: Adrian Freihofer <[email protected]>
GDB requires Python scripts provided by GCC to properly display C++ STL
types. This commit adds support for configuring GDB to use these
pretty-printers in the ide-sdk, covering both the ide_none and ide_code
plugins.
The implementation locates the GCC Python helper scripts in the sysroot
and injects the necessary commands into the GDB initialization files and
IDE debug configurations. This ensures that when debugging C++
applications, STL containers and other complex types are displayed in a
readable format.
Without this:
(gdb) print numbers
$1 = {<std::_Vector_base<int, std::allocator<int> >> = {
_M_impl = {<std::allocator<int>> = {<std::__new_allocator<int>> =
{<No data fields>}, <No data fields>}, <std::_Vector_base<int,
std::allocator<int> >::_Vector_impl_data> =
{_M_start = 0x55555556c370, _M_finish = 0x55555556c37c,
_M_end_of_storage = 0x55555556c37c}, <No data fields>}},
<No data fields>}
With this:
(gdb) print numbers
$1 = std::vector of length 3, capacity 3 = {1, 2, 3}
Signed-off-by: Adrian Freihofer <[email protected]>
---
scripts/lib/devtool/ide_plugins/ide_code.py | 14 +++++++++++
scripts/lib/devtool/ide_plugins/ide_none.py | 8 +++++++
scripts/lib/devtool/ide_sdk.py | 26 +++++++++++++++++++++
3 files changed, 48 insertions(+)
diff --git a/scripts/lib/devtool/ide_plugins/ide_code.py
b/scripts/lib/devtool/ide_plugins/ide_code.py
index 647a5b8cc6..c2ee9b91c6 100644
--- a/scripts/lib/devtool/ide_plugins/ide_code.py
+++ b/scripts/lib/devtool/ide_plugins/ide_code.py
@@ -290,6 +290,20 @@ class IdeVSCode(IdeBase):
logger.warning(
"Cannot setup debug symbols configuration for GDB.
IMAGE_GEN_DEBUGFS is not enabled.")
+ # Enable pretty-printing for gdb for resolving STL types with help of
python scripts
+ pretty_printing_cmd = modified_recipe.gdb_pretty_print_scripts
+ if pretty_printing_cmd:
+ setup_commands += [
+ {
+ "description": "Enable pretty-printing for gdb",
+ "text": "python " +";".join(pretty_printing_cmd)
+ },
+ {
+ "description": "Enable pretty-printing for gdb",
+ "text": "-enable-pretty-printing"
+ }
+ ]
+
launch_config['sourceFileMap'] = src_file_map
launch_config['setupCommands'] = setup_commands
diff --git a/scripts/lib/devtool/ide_plugins/ide_none.py
b/scripts/lib/devtool/ide_plugins/ide_none.py
index ba65f6f7da..ed96afa33c 100644
--- a/scripts/lib/devtool/ide_plugins/ide_none.py
+++ b/scripts/lib/devtool/ide_plugins/ide_none.py
@@ -102,6 +102,14 @@ class GdbCrossConfigNone(GdbCrossConfig):
"Cannot setup debug symbols configuration for GDB.
IMAGE_GEN_DEBUGFS is not enabled.")
# Disable debuginfod for now, the IDE configuration uses rootfs-dbg
from the image workdir.
gdbinit_lines.append('set debuginfod enabled off')
+
+ # Enable pretty-printing for gdb for resolving STL types with help of
python scripts
+ pretty_printing_cmd = self.modified_recipe.gdb_pretty_print_scripts
+ if pretty_printing_cmd:
+ gdbinit_lines.append(os.linesep +"python")
+ gdbinit_lines += pretty_printing_cmd
+ gdbinit_lines.append("end" + os.linesep)
+
gdbinit_lines.append(
'%s %s:%d' % (remote_cmd, self.gdb_cross.host,
self.gdbserver_port))
gdbinit_lines.append('set remote exec-file ' + self.binary.binary_path)
diff --git a/scripts/lib/devtool/ide_sdk.py b/scripts/lib/devtool/ide_sdk.py
index 78d7ed78c6..ba225f20b9 100755
--- a/scripts/lib/devtool/ide_sdk.py
+++ b/scripts/lib/devtool/ide_sdk.py
@@ -15,6 +15,7 @@ import stat
import subprocess
import sys
import shlex
+import glob
from argparse import RawTextHelpFormatter
from enum import Enum
@@ -414,6 +415,7 @@ class RecipeModified:
self.staging_incdir = None
self.strip_cmd = None
self.target_arch = None
+ self.tcoverride = None
self.topdir = None
self.workdir = None
# Service management
@@ -437,6 +439,7 @@ class RecipeModified:
# Populated after bitbake built all the recipes
self._installed_binaries = None
+ self._gdb_pretty_print_scripts = None
def initialize(self, config, workspace, tinfoil):
recipe_d = parse_recipe(
@@ -488,6 +491,7 @@ class RecipeModified:
recipe_d.getVar('STAGING_INCDIR'))
self.strip_cmd = recipe_d.getVar('STRIP')
self.target_arch = recipe_d.getVar('TARGET_ARCH')
+ self.tcoverride = recipe_d.getVar('TCOVERRIDE')
self.topdir = recipe_d.getVar('TOPDIR')
self.workdir = os.path.realpath(recipe_d.getVar('WORKDIR'))
@@ -632,6 +636,28 @@ class RecipeModified:
return mappings
+ @property
+ def gdb_pretty_print_scripts(self):
+ if self._gdb_pretty_print_scripts is None:
+ if self.tcoverride == "toolchain-gcc":
+ gcc_python_helpers_pattern = os.path.join(self.recipe_sysroot,
"usr", "share", "gcc-*", "python")
+ gcc_python_helpers_dirs = glob.glob(gcc_python_helpers_pattern)
+ if gcc_python_helpers_dirs:
+ gcc_python_helpers = gcc_python_helpers_dirs[0]
+ else:
+ logger.warning("Could not find gcc python helpers
directory matching: %s", gcc_python_helpers_pattern)
+ gcc_python_helpers = ""
+ pretty_print_scripts = [
+ "import sys",
+ "sys.path.insert(0, '" + gcc_python_helpers + "')",
+ "from libstdcxx.v6.printers import
register_libstdcxx_printers",
+ "register_libstdcxx_printers(None)"
+ ]
+ self._gdb_pretty_print_scripts = pretty_print_scripts
+ else:
+ self._gdb_pretty_print_scripts = ""
+ return self._gdb_pretty_print_scripts
+
def __init_exported_variables(self, d):
"""Find all variables with export flag set.
--
2.52.0
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