mirror of
https://github.com/espressif/binutils-gdb.git
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213516ef31
This commit is the result of running the gdb/copyright.py script, which automated the update of the copyright year range for all source files managed by the GDB project to be updated to include year 2023.
90 lines
2.7 KiB
Python
90 lines
2.7 KiB
Python
# Copyright (C) 2016-2023 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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# This unwinder never does any unwinding. It'll (pretend to) "sniff"
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# the frame and ultimately return None, indicating that actual unwinding
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# should be performed by some other unwinder.
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#
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# But, prior to returning None, it will attempt to obtain the value
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# associated with a symbol via a call to gdb.parse_and_eval(). In
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# the course of doing this evaluation, GDB will potentially access
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# some frames, leading to the possibility of a recursive invocation of
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# this unwinder. If that should happen, code contained herein detects
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# that and prints a message which will cause some of the associated
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# tests to FAIL.
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import gdb
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from gdb.unwinder import Unwinder
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class TestUnwinder(Unwinder):
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count = 0
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@classmethod
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def reset_count(cls):
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cls.count = 0
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@classmethod
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def inc_count(cls):
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cls.count += 1
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test = "check_undefined_symbol"
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@classmethod
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def set_test(cls, test):
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cls.test = test
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def __init__(self):
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Unwinder.__init__(self, "test unwinder")
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self.recurse_level = 0
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def __call__(self, pending_frame):
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if self.recurse_level > 0:
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gdb.write("TestUnwinder: Recursion detected - returning early.\n")
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return None
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self.recurse_level += 1
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TestUnwinder.inc_count()
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if TestUnwinder.test == "check_user_reg_pc":
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pc = pending_frame.read_register("pc")
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pc_as_int = int(pc.cast(gdb.lookup_type("int")))
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# gdb.write("In unwinder: pc=%x\n" % pc_as_int)
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elif TestUnwinder.test == "check_pae_pc":
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pc = gdb.parse_and_eval("$pc")
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pc_as_int = int(pc.cast(gdb.lookup_type("int")))
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# gdb.write("In unwinder: pc=%x\n" % pc_as_int)
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elif TestUnwinder.test == "check_undefined_symbol":
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try:
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val = gdb.parse_and_eval("undefined_symbol")
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except Exception as arg:
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pass
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self.recurse_level -= 1
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return None
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gdb.unwinder.register_unwinder(None, TestUnwinder(), True)
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gdb.write("Python script imported\n")
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