mirror of
https://github.com/espressif/binutils-gdb.git
synced 2025-12-18 16:57:56 +08:00
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.
141 lines
4.1 KiB
Python
141 lines
4.1 KiB
Python
# Copyright (C) 2015-2024 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""Unwinder class and register_unwinder function."""
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import gdb
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class Unwinder(object):
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"""Base class (or a template) for frame unwinders written in Python.
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An unwinder has a single method __call__ and the attributes
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described below.
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Attributes:
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name: The name of the unwinder.
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enabled: A boolean indicating whether the unwinder is enabled.
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"""
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def __init__(self, name):
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"""Constructor.
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Args:
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name: An identifying name for the unwinder.
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"""
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if not isinstance(name, str):
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raise TypeError("incorrect type for name: %s" % type(name))
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self._name = name
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self._enabled = True
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@property
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def name(self):
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return self._name
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@property
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def enabled(self):
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return self._enabled
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@enabled.setter
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def enabled(self, value):
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if not isinstance(value, bool):
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raise TypeError("incorrect type for enabled attribute: %s" % type(value))
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self._enabled = value
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gdb.invalidate_cached_frames()
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def __call__(self, pending_frame):
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"""GDB calls this method to unwind a frame.
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Arguments:
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pending_frame: gdb.PendingFrame instance.
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Returns:
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gdb.UnwindInfo instance.
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"""
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raise NotImplementedError("Unwinder __call__.")
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class FrameId(object):
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"""A Frame-ID class for use when creating gdb.UnwindInfo objects.
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Attributes (all read-only):
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pc: Program counter value.
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sp: The stack-pointer value.
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special: An alternative stack-pointer value, can be None."""
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def __init__(self, sp, pc, special=None):
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self._sp = sp
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self._pc = pc
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self._special = special
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@property
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def sp(self):
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return self._sp
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@property
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def pc(self):
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return self._pc
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@property
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def special(self):
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return self._special
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def register_unwinder(locus, unwinder, replace=False):
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"""Register unwinder in given locus.
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The unwinder is prepended to the locus's unwinders list. Unwinder
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name should be unique.
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Arguments:
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locus: Either an objfile, progspace, or None (in which case
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the unwinder is registered globally).
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unwinder: An object of a gdb.Unwinder subclass
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replace: If True, replaces existing unwinder with the same name.
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Otherwise, raises exception if unwinder with the same
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name already exists.
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Returns:
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Nothing.
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Raises:
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RuntimeError: Unwinder name is not unique
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TypeError: Bad locus type
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"""
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if locus is None:
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if gdb.parameter("verbose"):
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gdb.write("Registering global %s unwinder ...\n" % unwinder.name)
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locus = gdb
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elif isinstance(locus, gdb.Objfile) or isinstance(locus, gdb.Progspace):
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if gdb.parameter("verbose"):
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gdb.write(
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"Registering %s unwinder for %s ...\n" % (unwinder.name, locus.filename)
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)
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else:
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raise TypeError("locus should be gdb.Objfile or gdb.Progspace or None")
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i = 0
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for needle in locus.frame_unwinders:
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if needle.name == unwinder.name:
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if replace:
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del locus.frame_unwinders[i]
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else:
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raise RuntimeError("Unwinder %s already exists." % unwinder.name)
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i += 1
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locus.frame_unwinders.insert(0, unwinder)
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gdb.invalidate_cached_frames()
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