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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.
73 lines
2.4 KiB
Python
73 lines
2.4 KiB
Python
# Copyright (C) 2020-2023 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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# A dummy stack unwinder used for testing the Python unwinders when we
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# have inline frames. This unwinder will never claim any frames,
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# instead, all it does it try to read all registers possible target
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# registers as part of the frame sniffing process..
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import gdb
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from gdb.unwinder import Unwinder
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apb_global = None
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class dummy_unwinder(Unwinder):
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"""A dummy unwinder that looks at a bunch of registers as part of
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the unwinding process."""
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class frame_id(object):
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"""Basic frame id."""
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def __init__(self, sp, pc):
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"""Create the frame id."""
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self.sp = sp
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self.pc = pc
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def __init__(self):
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"""Create the unwinder."""
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Unwinder.__init__(self, "dummy stack unwinder")
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self.void_ptr_t = gdb.lookup_type("void").pointer()
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self.regs = None
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def get_regs(self, pending_frame):
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"""Return a list of register names that should be read. Only
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gathers the list once, then caches the result."""
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if self.regs is not None:
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return self.regs
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# Collect the names of all registers to read.
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self.regs = list(pending_frame.architecture().register_names())
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return self.regs
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def __call__(self, pending_frame):
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"""Actually performs the unwind, or at least sniffs this frame
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to see if the unwinder should claim it, which is never does."""
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try:
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for r in self.get_regs(pending_frame):
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v = pending_frame.read_register(r).cast(self.void_ptr_t)
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except:
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print("Dummy unwinder, exception")
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raise
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return None
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# Register the ComRV stack unwinder.
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gdb.unwinder.register_unwinder(None, dummy_unwinder(), True)
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print("Python script imported")
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