mirror of
https://github.com/epasveer/seer.git
synced 2026-08-29 16:40:42 +08:00
Ernie Pasveer
80 lines
3.2 KiB
Plaintext
80 lines
3.2 KiB
Plaintext
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Online doc for writing mi commands in python.
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https://sourceware.org/gdb/current/onlinedocs/gdb.html/GDB_002fMI-Commands-In-Python.html#GDB_002fMI-Commands-In-Python
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https://sourceware.org/gdb/current/onlinedocs/gdb.html/Basic-Python.html#Basic-Python
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Online doc for gdb's skip command.
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https://sourceware.org/gdb/current/onlinedocs/gdb.html/Skipping-Over-Functions-and-Files.html
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The following code snippet shows how some trivial MI commands can be implemented in Python:
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class MISkip(gdb.MICommand):
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"""Run the 'skip' command."""
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def __init__(self, name, mode):
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self._mode = mode
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super(MISkip, self).__init__(name)
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def invoke(self, argv):
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if self._mode == 'dict':
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return { 'dict': { 'argv' : argv } }
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elif self._mode == 'list':
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return { 'list': gdb.execute ("info skip", to_string=True) }
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else:
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return { 'string': ", ".join(argv) }
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MISkip("-skip-list", "list")
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The last line instantiate the class, creating one new GDB/MI commands -skip-list.
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Each time a subclass of gdb.MICommand is instantiated, the new command is automatically registered with GDB.
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Source the py file at the gdb prompt.
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(gdb) source MISkip.py
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Depending on how the Python code is read into GDB, you may need to import the gdb module explicitly.
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The following example shows a GDB session in which the above commands have been added:
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(gdb)
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-skip-list
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^done,list="Num Enb Glob File RE Function\n1 y n <none> n std::vector<int, std::allocator<int> >::back()\n2 y n <none> n std::unique_ptr<int, std::default_delete<int> >::operator*() const\n"
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^done,list="Num Enb Glob File RE Function\n
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1 y n <none> n std::vector<int, std::allocator<int> >::back()\n
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2 y n <none> n std::unique_ptr<int, std::default_delete<int> >::operator*() const\n"
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['helloskipxxxxxxxxxxxxxxxxxxxxxxx.cpp']
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info skip
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Num Enb Glob File RE Function
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1 y n <none> n std::vector<int, std::allocator<int> >::back()
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2 y n <none> n std::unique_ptr<int, std::default_delete<int> >::operator*() const
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3 y n helloskip.cpp n <none>
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4 y n helloskipxxxxxxxxxxxxxxxxxxxxxxx.cpp n <none>
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Run Seer this way:
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$ /usr/local/bin/seergdb --project=project.seer
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[ ] The return string has 'n' characters but I think they should be '\n'. Seer parsing bug with escaped '\n'????
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[ ] Handle the parsing of the return string and return a python table.
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Use this to see if '-info-skip' or any other skip command is know.
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-info-gdb-mi-command skip-list
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-info-gdb-mi-command skip-delete
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-info-gdb-mi-command skip-enable
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-info-gdb-mi-command skip-...
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The '-skip-list'
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^done,skips=[
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{number="1",enabled="y",glob="n",file="<none>",re="n",function="std::vector<int, std::allocator<int> >::back()"},
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{number="2",enabled="y",glob="n",file="<none>",re="n",function="<none>"}
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]
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