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3666a04883
This commits the result of running gdb/copyright.py as per our Start
of New Year procedure...
gdb/ChangeLog
Update copyright year range in copyright header of all GDB files.
72 lines
2.5 KiB
Python
72 lines
2.5 KiB
Python
# Copyright (C) 2020-2021 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 != 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 ()
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.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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