mirror of
https://github.com/chipsec/chipsec
synced 2026-06-08 13:31:00 +00:00
Nathaniel Mitchell
136 lines
3.5 KiB
Python
136 lines
3.5 KiB
Python
# CHIPSEC: Platform Security Assessment Framework
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# Copyright (c) 2010-2021, Intel Corporation
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; Version 2.
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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, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# Contact information:
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# chipsec@intel.com
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#
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"""
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The idt, gdt and ldt commands print the IDT, GDT and LDT, respectively.
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IDT command:
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>>> chipsec_util idt [cpu_id]
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Examples:
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>>> chipsec_util idt 0
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>>> chipsec_util idt
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GDT command:
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>>> chipsec_util gdt [cpu_id]
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Examples:
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>>> chipsec_util gdt 0
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>>> chipsec_util gdt
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LDT command:
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>>> chipsec_util ldt [cpu_id]
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Examples:
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>>> chipsec_util ldt 0
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>>> chipsec_util ldt
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"""
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from argparse import ArgumentParser
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from chipsec.command import BaseCommand, toLoad
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# CPU descriptor tables
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class IDTCommand(BaseCommand):
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"""
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>>> chipsec_util idt [cpu_id]
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Examples:
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>>> chipsec_util idt 0
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>>> chipsec_util idt
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"""
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def requirements(self) -> toLoad:
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return toLoad.Driver
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def parse_arguments(self) -> None:
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parser = ArgumentParser(usage=IDTCommand.__doc__)
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parser.add_argument('_thread', metavar='thread', type=lambda x: int(x, 0), nargs='?', default=None, help="thread")
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parser.parse_args(self.argv, namespace=self)
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def run(self) -> None:
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num_threads = self.cs.hals.msr.get_cpu_thread_count()
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if self._thread and self._thread < num_threads:
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self.logger.log(f'[CHIPSEC] Dumping IDT of CPU thread {self._thread:d}')
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self.cs.hals.msr.IDT(self._thread, 4)
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else:
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self.logger.log(f'[CHIPSEC] Dumping IDT of {num_threads:d} CPU threads')
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self.cs.hals.msr.IDT_all(4)
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class GDTCommand(BaseCommand):
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"""
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>>> chipsec_util gdt [cpu_id]
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Examples:
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>>> chipsec_util gdt 0
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>>> chipsec_util gdt
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"""
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def requirements(self) -> toLoad:
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return toLoad.Driver
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def parse_arguments(self) -> None:
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parser = ArgumentParser(usage=GDTCommand.__doc__)
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parser.add_argument('_thread', metavar='thread', type=lambda x: int(x, 0), nargs='?', default=None, help="thread")
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parser.parse_args(self.argv, namespace=self)
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def run(self) -> None:
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num_threads = self.cs.hals.msr.get_cpu_thread_count()
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if self._thread and self._thread < num_threads:
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self.logger.log(f'[CHIPSEC] Dumping IDT of CPU thread {self._thread:d}')
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self.cs.hals.msr.GDT(self._thread, 4)
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else:
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self.logger.log(f'[CHIPSEC] Dumping IDT of {num_threads:d} CPU threads')
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self.cs.hals.msr.GDT_all(4)
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class LDTCommand(BaseCommand):
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"""
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>>> chipsec_util ldt [cpu_id]
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Examples:
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>>> chipsec_util ldt 0
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>>> chipsec_util ldt
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"""
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def requirements(self) -> toLoad:
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return toLoad.Nil
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def parse_arguments(self) -> None:
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return
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def run(self) -> None:
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self.logger.log_error("[CHIPSEC] ldt not implemented")
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commands = {'idt': IDTCommand, 'gdt': GDTCommand}
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