forked from Imagelibrary/binutils-gdb
1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
86 lines
2.7 KiB
Python
86 lines
2.7 KiB
Python
# Copyright (C) 2021-2024 Free Software Foundation, Inc.
|
|
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
import gdb
|
|
from gdb.unwinder import Unwinder
|
|
|
|
# Set this to the stack level the backtrace should be corrupted at.
|
|
# This will only work for frame 1, 3, or 5 in the test this unwinder
|
|
# was written for.
|
|
stop_at_level = None
|
|
|
|
# Set this to the stack frame size of frames 1, 3, and 5. These
|
|
# frames will all have the same stack frame size as they are the same
|
|
# function called recursively.
|
|
stack_adjust = None
|
|
|
|
|
|
class FrameId(object):
|
|
def __init__(self, sp, pc):
|
|
self._sp = sp
|
|
self._pc = pc
|
|
|
|
@property
|
|
def sp(self):
|
|
return self._sp
|
|
|
|
@property
|
|
def pc(self):
|
|
return self._pc
|
|
|
|
|
|
class TestUnwinder(Unwinder):
|
|
def __init__(self):
|
|
Unwinder.__init__(self, "stop at level")
|
|
|
|
def __call__(self, pending_frame):
|
|
global stop_at_level
|
|
global stack_adjust
|
|
|
|
if stop_at_level is None or pending_frame.level() != stop_at_level:
|
|
return None
|
|
|
|
if stack_adjust is None:
|
|
raise gdb.GdbError("invalid stack_adjust")
|
|
|
|
if not stop_at_level in [1, 3, 5]:
|
|
raise gdb.GdbError("invalid stop_at_level")
|
|
|
|
sp_desc = pending_frame.architecture().registers().find("sp")
|
|
sp = pending_frame.read_register(sp_desc) + stack_adjust
|
|
pc = (gdb.lookup_symbol("normal_func"))[0].value().address
|
|
unwinder = pending_frame.create_unwind_info(FrameId(sp, pc))
|
|
|
|
for reg in pending_frame.architecture().registers("general"):
|
|
val = pending_frame.read_register(reg)
|
|
unwinder.add_saved_register(reg, val)
|
|
return unwinder
|
|
|
|
|
|
gdb.unwinder.register_unwinder(None, TestUnwinder(), True)
|
|
|
|
# When loaded, it is expected that the stack looks like:
|
|
#
|
|
# main -> normal_func -> inline_func -> normal_func -> inline_func -> normal_func -> inline_func
|
|
#
|
|
# Compute the stack frame size of normal_func, which has inline_func
|
|
# inlined within it.
|
|
f0 = gdb.newest_frame()
|
|
f1 = f0.older()
|
|
f2 = f1.older()
|
|
f0_sp = f0.read_register("sp")
|
|
f2_sp = f2.read_register("sp")
|
|
stack_adjust = f2_sp - f0_sp
|