refresh gdb hooks to v3 (reworking how they are packaged)

This commit is contained in:
dmalcolm 2010-03-24 19:57:26 +00:00
parent eeb0b9ba0c
commit 485fd76f7f
3 changed files with 856 additions and 11 deletions

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python-gdb.py Normal file
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#!/usr/bin/python
'''
From gdb 7 onwards, gdb's build can be configured --with-python, allowing gdb
to be extended with Python code e.g. for library-specific data visualizations,
such as for the C++ STL types. Documentation on this API can be seen at:
http://sourceware.org/gdb/current/onlinedocs/gdb/Python-API.html
This python module deals with the case when the process being debugged (the
"inferior process" in gdb parlance) is itself python, or more specifically,
linked against libpython. In this situation, almost every item of data is a
(PyObject*), and having the debugger merely print their addresses is not very
enlightening.
This module embeds knowledge about the implementation details of libpython so
that we can emit useful visualizations e.g. a string, a list, a dict, a frame
giving file/line information and the state of local variables
In particular, given a gdb.Value corresponding to a PyObject* in the inferior
process, we can generate a "proxy value" within the gdb process. For example,
given a PyObject* in the inferior process that is in fact a PyListObject*
holding three PyObject* that turn out to be PyStringObject* instances, we can
generate a proxy value within the gdb process that is a list of strings:
["foo", "bar", "baz"]
We try to defer gdb.lookup_type() invocations for python types until as late as
possible: for a dynamically linked python binary, when the process starts in
the debugger, the libpython.so hasn't been dynamically loaded yet, so none of
the type names are known to the debugger
The module also extends gdb with some python-specific commands.
'''
import gdb
# Look up the gdb.Type for some standard types:
_type_char_ptr = gdb.lookup_type('char').pointer() # char*
_type_void_ptr = gdb.lookup_type('void').pointer() # void*
_type_size_t = gdb.lookup_type('size_t')
SIZEOF_VOID_P = _type_void_ptr.sizeof
Py_TPFLAGS_HEAPTYPE = (1L << 9)
Py_TPFLAGS_INT_SUBCLASS = (1L << 23)
Py_TPFLAGS_LONG_SUBCLASS = (1L << 24)
Py_TPFLAGS_LIST_SUBCLASS = (1L << 25)
Py_TPFLAGS_TUPLE_SUBCLASS = (1L << 26)
Py_TPFLAGS_STRING_SUBCLASS = (1L << 27)
Py_TPFLAGS_UNICODE_SUBCLASS = (1L << 28)
Py_TPFLAGS_DICT_SUBCLASS = (1L << 29)
Py_TPFLAGS_BASE_EXC_SUBCLASS = (1L << 30)
Py_TPFLAGS_TYPE_SUBCLASS = (1L << 31)
class NullPyObjectPtr(RuntimeError):
pass
def safety_limit(val):
# Given a integer value from the process being debugged, limit it to some
# safety threshold so that arbitrary breakage within said process doesn't
# break the gdb process too much (e.g. sizes of iterations, sizes of lists)
return min(val, 100)
def safe_range(val):
# As per range, but don't trust the value too much: cap it to a safety
# threshold in case the data was corrupted
return xrange(safety_limit(val))
class PyObjectPtr(object):
"""
Class wrapping a gdb.Value that's a either a (PyObject*) within the
inferior process, or some subclass pointer e.g. (PyStringObject*)
There will be a subclass for every refined PyObject type that we care
about.
Note that at every stage the underlying pointer could be NULL, point
to corrupt data, etc; this is the debugger, after all.
"""
_typename = 'PyObject'
def __init__(self, gdbval, cast_to=None):
if cast_to:
self._gdbval = gdbval.cast(cast_to)
else:
self._gdbval = gdbval
def field(self, name):
'''
Get the gdb.Value for the given field within the PyObject, coping with
some python 2 versus python 3 differences.
Various libpython types are defined using the "PyObject_HEAD" and
"PyObject_VAR_HEAD" macros.
In Python 2, this these are defined so that "ob_type" and (for a var
object) "ob_size" are fields of the type in question.
In Python 3, this is defined as an embedded PyVarObject type thus:
PyVarObject ob_base;
so that the "ob_size" field is located insize the "ob_base" field, and
the "ob_type" is most easily accessed by casting back to a (PyObject*).
'''
if self.is_null():
raise NullPyObjectPtr(self)
if name == 'ob_type':
pyo_ptr = self._gdbval.cast(PyObjectPtr.get_gdb_type())
return pyo_ptr.dereference()[name]
if name == 'ob_size':
try:
# Python 2:
return self._gdbval.dereference()[name]
except RuntimeError:
# Python 3:
return self._gdbval.dereference()['ob_base'][name]
# General case: look it up inside the object:
return self._gdbval.dereference()[name]
def type(self):
return PyTypeObjectPtr(self.field('ob_type'))
def is_null(self):
return 0 == long(self._gdbval)
def safe_tp_name(self):
try:
return self.type().field('tp_name').string()
except NullPyObjectPtr:
# NULL tp_name?
return 'unknown'
except RuntimeError:
# Can't even read the object at all?
return 'unknown'
def proxyval(self):
'''
Scrape a value from the inferior process, and try to represent it
within the gdb process, whilst (hopefully) avoiding crashes when
the remote data is corrupt.
Derived classes will override this.
For example, a PyIntObject* with ob_ival 42 in the inferior process
should result in an int(42) in this process.
'''
class FakeRepr(object):
"""
Class representing a non-descript PyObject* value in the inferior
process for when we don't have a custom scraper, intended to have
a sane repr().
"""
def __init__(self, tp_name, address):
self.tp_name = tp_name
self.address = address
def __repr__(self):
# For the NULL pointer, we have no way of knowing a type, so
# special-case it as per
# http://bugs.python.org/issue8032#msg100882
if self.address == 0:
return '0x0'
return '<%s at remote 0x%x>' % (self.tp_name, self.address)
return FakeRepr(self.safe_tp_name(),
long(self._gdbval))
@classmethod
def subclass_from_type(cls, t):
'''
Given a PyTypeObjectPtr instance wrapping a gdb.Value that's a
(PyTypeObject*), determine the corresponding subclass of PyObjectPtr
to use
Ideally, we would look up the symbols for the global types, but that
isn't working yet:
(gdb) python print gdb.lookup_symbol('PyList_Type')[0].value
Traceback (most recent call last):
File "<string>", line 1, in <module>
NotImplementedError: Symbol type not yet supported in Python scripts.
Error while executing Python code.
For now, we use tp_flags, after doing some string comparisons on the
tp_name for some special-cases that don't seem to be visible through
flags
'''
try:
tp_name = t.field('tp_name').string()
tp_flags = int(t.field('tp_flags'))
except RuntimeError:
# Handle any kind of error e.g. NULL ptrs by simply using the base
# class
return cls
#print 'tp_flags = 0x%08x' % tp_flags
#print 'tp_name = %r' % tp_name
name_map = {'bool': PyBoolObjectPtr,
'classobj': PyClassObjectPtr,
'instance': PyInstanceObjectPtr,
'NoneType': PyNoneStructPtr,
'frame': PyFrameObjectPtr,
}
if tp_name in name_map:
return name_map[tp_name]
if tp_flags & Py_TPFLAGS_HEAPTYPE:
return HeapTypeObjectPtr
if tp_flags & Py_TPFLAGS_INT_SUBCLASS:
return PyIntObjectPtr
if tp_flags & Py_TPFLAGS_LONG_SUBCLASS:
return PyLongObjectPtr
if tp_flags & Py_TPFLAGS_LIST_SUBCLASS:
return PyListObjectPtr
if tp_flags & Py_TPFLAGS_TUPLE_SUBCLASS:
return PyTupleObjectPtr
if tp_flags & Py_TPFLAGS_STRING_SUBCLASS:
return PyStringObjectPtr
if tp_flags & Py_TPFLAGS_UNICODE_SUBCLASS:
return PyUnicodeObjectPtr
if tp_flags & Py_TPFLAGS_DICT_SUBCLASS:
return PyDictObjectPtr
#if tp_flags & Py_TPFLAGS_BASE_EXC_SUBCLASS:
# return something
#if tp_flags & Py_TPFLAGS_TYPE_SUBCLASS:
# return PyTypeObjectPtr
# Use the base class:
return cls
@classmethod
def from_pyobject_ptr(cls, gdbval):
'''
Try to locate the appropriate derived class dynamically, and cast
the pointer accordingly.
'''
try:
p = PyObjectPtr(gdbval)
cls = cls.subclass_from_type(p.type())
return cls(gdbval, cast_to=cls.get_gdb_type())
except RuntimeError:
# Handle any kind of error e.g. NULL ptrs by simply using the base
# class
pass
return cls(gdbval)
@classmethod
def get_gdb_type(cls):
return gdb.lookup_type(cls._typename).pointer()
class InstanceProxy(object):
def __init__(self, cl_name, attrdict, address):
self.cl_name = cl_name
self.attrdict = attrdict
self.address = address
def __repr__(self):
if isinstance(self.attrdict, dict):
kwargs = ', '.join(["%s=%r" % (arg, val)
for arg, val in self.attrdict.iteritems()])
return '<%s(%s) at remote 0x%x>' % (self.cl_name,
kwargs, self.address)
else:
return '<%s at remote 0x%x>' % (self.cl_name,
self.address)
def _PyObject_VAR_SIZE(typeobj, nitems):
return ( ( typeobj.field('tp_basicsize') +
nitems * typeobj.field('tp_itemsize') +
(SIZEOF_VOID_P - 1)
) & ~(SIZEOF_VOID_P - 1)
).cast(_type_size_t)
class HeapTypeObjectPtr(PyObjectPtr):
_typename = 'PyObject'
def proxyval(self):
'''
Support for new-style classes.
Currently we just locate the dictionary using a transliteration to
python of _PyObject_GetDictPtr, ignoring descriptors
'''
attr_dict = {}
try:
typeobj = self.type()
dictoffset = int_from_int(typeobj.field('tp_dictoffset'))
if dictoffset != 0:
if dictoffset < 0:
type_PyVarObject_ptr = gdb.lookup_type('PyVarObject').pointer()
tsize = int_from_int(self._gdbval.cast(type_PyVarObject_ptr)['ob_size'])
if tsize < 0:
tsize = -tsize
size = _PyObject_VAR_SIZE(typeobj, tsize)
dictoffset += size
assert dictoffset > 0
assert dictoffset % SIZEOF_VOID_P == 0
dictptr = self._gdbval.cast(_type_char_ptr) + dictoffset
PyObjectPtrPtr = PyObjectPtr.get_gdb_type().pointer()
dictptr = dictptr.cast(PyObjectPtrPtr)
attr_dict = PyObjectPtr.from_pyobject_ptr(dictptr.dereference()).proxyval()
except RuntimeError:
# Corrupt data somewhere; fail safe
pass
tp_name = self.safe_tp_name()
# New-style class:
return InstanceProxy(tp_name, attr_dict, long(self._gdbval))
class PyBoolObjectPtr(PyObjectPtr):
"""
Class wrapping a gdb.Value that's a PyBoolObject* i.e. one of the two
<bool> instances (Py_True/Py_False) within the process being debugged.
"""
_typename = 'PyBoolObject'
def proxyval(self):
if int_from_int(self.field('ob_ival')):
return True
else:
return False
class PyClassObjectPtr(PyObjectPtr):
"""
Class wrapping a gdb.Value that's a PyClassObject* i.e. a <classobj>
instance within the process being debugged.
"""
_typename = 'PyClassObject'
class PyCodeObjectPtr(PyObjectPtr):
"""
Class wrapping a gdb.Value that's a PyCodeObject* i.e. a <code> instance
within the process being debugged.
"""
_typename = 'PyCodeObject'
def addr2line(self, addrq):
'''
Get the line number for a given bytecode offset
Analogous to PyCode_Addr2Line; translated from pseudocode in
Objects/lnotab_notes.txt
'''
co_lnotab = PyObjectPtr.from_pyobject_ptr(self.field('co_lnotab')).proxyval()
# Initialize lineno to co_firstlineno as per PyCode_Addr2Line
# not 0, as lnotab_notes.txt has it:
lineno = int_from_int(self.field('co_firstlineno'))
addr = 0
for addr_incr, line_incr in zip(co_lnotab[::2], co_lnotab[1::2]):
addr += ord(addr_incr)
if addr > addrq:
return lineno
lineno += ord(line_incr)
return lineno
class PyDictObjectPtr(PyObjectPtr):
"""
Class wrapping a gdb.Value that's a PyDictObject* i.e. a dict instance
within the process being debugged.
"""
_typename = 'PyDictObject'
def proxyval(self):
result = {}
for i in safe_range(self.field('ma_mask') + 1):
ep = self.field('ma_table') + i
pvalue = PyObjectPtr.from_pyobject_ptr(ep['me_value'])
if not pvalue.is_null():
pkey = PyObjectPtr.from_pyobject_ptr(ep['me_key'])
result[pkey.proxyval()] = pvalue.proxyval()
return result
class PyInstanceObjectPtr(PyObjectPtr):
_typename = 'PyInstanceObject'
def proxyval(self):
# Get name of class:
in_class = PyObjectPtr.from_pyobject_ptr(self.field('in_class'))
cl_name = PyObjectPtr.from_pyobject_ptr(in_class.field('cl_name')).proxyval()
# Get dictionary of instance attributes:
in_dict = PyObjectPtr.from_pyobject_ptr(self.field('in_dict')).proxyval()
# Old-style class:
return InstanceProxy(cl_name, in_dict, long(self._gdbval))
class PyIntObjectPtr(PyObjectPtr):
_typename = 'PyIntObject'
def proxyval(self):
result = int_from_int(self.field('ob_ival'))
return result
class PyListObjectPtr(PyObjectPtr):
_typename = 'PyListObject'
def __getitem__(self, i):
# Get the gdb.Value for the (PyObject*) with the given index:
field_ob_item = self.field('ob_item')
return field_ob_item[i]
def proxyval(self):
result = [PyObjectPtr.from_pyobject_ptr(self[i]).proxyval()
for i in safe_range(int_from_int(self.field('ob_size')))]
return result
class PyLongObjectPtr(PyObjectPtr):
_typename = 'PyLongObject'
def proxyval(self):
'''
Python's Include/longobjrep.h has this declaration:
struct _longobject {
PyObject_VAR_HEAD
digit ob_digit[1];
};
with this description:
The absolute value of a number is equal to
SUM(for i=0 through abs(ob_size)-1) ob_digit[i] * 2**(SHIFT*i)
Negative numbers are represented with ob_size < 0;
zero is represented by ob_size == 0.
where SHIFT can be either:
#define PyLong_SHIFT 30
#define PyLong_SHIFT 15
'''
ob_size = long(self.field('ob_size'))
if ob_size == 0:
return 0L
ob_digit = self.field('ob_digit')
if gdb.lookup_type('digit').sizeof == 2:
SHIFT = 15L
else:
# FIXME: I haven't yet tested this case
SHIFT = 30L
digits = [long(ob_digit[i]) * 2**(SHIFT*i)
for i in safe_range(abs(ob_size))]
result = sum(digits)
if ob_size < 0:
result = -result
return result
class PyNoneStructPtr(PyObjectPtr):
"""
Class wrapping a gdb.Value that's a PyObject* pointing to the
singleton (we hope) _Py_NoneStruct with ob_type PyNone_Type
"""
_typename = 'PyObject'
def proxyval(self):
return None
class PyFrameObjectPtr(PyObjectPtr):
_typename = 'PyFrameObject'
def __str__(self):
fi = FrameInfo(self)
return str(fi)
class PyStringObjectPtr(PyObjectPtr):
_typename = 'PyStringObject'
def __str__(self):
field_ob_size = self.field('ob_size')
field_ob_sval = self.field('ob_sval')
char_ptr = field_ob_sval.address.cast(_type_char_ptr)
return ''.join([chr(field_ob_sval[i]) for i in safe_range(field_ob_size)])
def proxyval(self):
return str(self)
class PyTupleObjectPtr(PyObjectPtr):
_typename = 'PyTupleObject'
def __getitem__(self, i):
# Get the gdb.Value for the (PyObject*) with the given index:
field_ob_item = self.field('ob_item')
return field_ob_item[i]
def proxyval(self):
result = tuple([PyObjectPtr.from_pyobject_ptr(self[i]).proxyval()
for i in safe_range(int_from_int(self.field('ob_size')))])
return result
class PyTypeObjectPtr(PyObjectPtr):
_typename = 'PyTypeObject'
class PyUnicodeObjectPtr(PyObjectPtr):
_typename = 'PyUnicodeObject'
def proxyval(self):
# From unicodeobject.h:
# Py_ssize_t length; /* Length of raw Unicode data in buffer */
# Py_UNICODE *str; /* Raw Unicode buffer */
field_length = long(self.field('length'))
field_str = self.field('str')
# Gather a list of ints from the Py_UNICODE array; these are either
# UCS-2 or UCS-4 code points:
Py_UNICODEs = [int(field_str[i]) for i in safe_range(field_length)]
# Convert the int code points to unicode characters, and generate a
# local unicode instance:
result = u''.join([unichr(ucs) for ucs in Py_UNICODEs])
return result
def int_from_int(gdbval):
return int(str(gdbval))
def stringify(val):
# TODO: repr() puts everything on one line; pformat can be nicer, but
# can lead to v.long results; this function isolates the choice
if True:
return repr(val)
else:
from pprint import pformat
return pformat(val)
class FrameInfo:
'''
Class representing all of the information we can scrape about a
PyFrameObject*
'''
def __init__(self, fval):
self.fval = fval
self.co = PyCodeObjectPtr.from_pyobject_ptr(fval.field('f_code'))
self.co_name = PyObjectPtr.from_pyobject_ptr(self.co.field('co_name'))
self.co_filename = PyObjectPtr.from_pyobject_ptr(self.co.field('co_filename'))
self.f_lineno = int_from_int(fval.field('f_lineno'))
self.f_lasti = int_from_int(fval.field('f_lasti'))
self.co_nlocals = int_from_int(self.co.field('co_nlocals'))
self.co_varnames = PyTupleObjectPtr.from_pyobject_ptr(self.co.field('co_varnames'))
self.locals = [] # list of kv pairs
f_localsplus = self.fval.field('f_localsplus')
for i in safe_range(self.co_nlocals):
#print 'i=%i' % i
value = PyObjectPtr.from_pyobject_ptr(f_localsplus[i])
if not value.is_null():
name = PyObjectPtr.from_pyobject_ptr(self.co_varnames[i])
#print 'name=%s' % name
value = value.proxyval()
#print 'value=%s' % value
self.locals.append((str(name), value))
def filename(self):
'''Get the path of the current Python source file, as a string'''
return self.co_filename.proxyval()
def current_line_num(self):
'''Get current line number as an integer (1-based)
Translated from PyFrame_GetLineNumber and PyCode_Addr2Line
See Objects/lnotab_notes.txt
'''
f_trace = self.fval.field('f_trace')
if long(f_trace) != 0:
# we have a non-NULL f_trace:
return self.f_lineno
else:
#try:
return self.co.addr2line(self.f_lasti)
#except ValueError:
# return self.f_lineno
def current_line(self):
'''Get the text of the current source line as a string, with a trailing
newline character'''
with open(self.filename(), 'r') as f:
all_lines = f.readlines()
# Convert from 1-based current_line_num to 0-based list offset:
return all_lines[self.current_line_num()-1]
def __str__(self):
return ('Frame 0x%x, for file %s, line %i, in %s (%s)'
% (long(self.fval._gdbval),
self.co_filename,
self.current_line_num(),
self.co_name,
', '.join(['%s=%s' % (k, stringify(v)) for k, v in self.locals]))
)
class PyObjectPtrPrinter:
"Prints a (PyObject*)"
def __init__ (self, gdbval):
self.gdbval = gdbval
def to_string (self):
proxyval = PyObjectPtr.from_pyobject_ptr(self.gdbval).proxyval()
return stringify(proxyval)
class PyFrameObjectPtrPrinter(PyObjectPtrPrinter):
"Prints a (PyFrameObject*)"
def to_string (self):
pyop = PyObjectPtr.from_pyobject_ptr(self.gdbval)
fi = FrameInfo(pyop)
return str(fi)
def pretty_printer_lookup(gdbval):
type = gdbval.type.unqualified()
if type.code == gdb.TYPE_CODE_PTR:
type = type.target().unqualified()
t = str(type)
if t == "PyObject":
return PyObjectPtrPrinter(gdbval)
elif t == "PyFrameObject":
return PyFrameObjectPtrPrinter(gdbval)
"""
During development, I've been manually invoking the code in this way:
(gdb) python
import sys
sys.path.append('/home/david/coding/python-gdb')
import libpython
end
then reloading it after each edit like this:
(gdb) python reload(libpython)
The following code should ensure that the prettyprinter is registered
if the code is autoloaded by gdb when visiting libpython.so, provided
that this python file is installed to the same path as the library (or its
.debug file) plus a "-gdb.py" suffix, e.g:
/usr/lib/libpython2.6.so.1.0-gdb.py
/usr/lib/debug/usr/lib/libpython2.6.so.1.0.debug-gdb.py
"""
def register (obj):
if obj == None:
obj = gdb
# Wire up the pretty-printer
obj.pretty_printers.append(pretty_printer_lookup)
register (gdb.current_objfile ())
def get_python_frame(gdb_frame):
try:
f = gdb_frame.read_var('f')
return PyFrameObjectPtr.from_pyobject_ptr(f)
except ValueError:
return None
def get_selected_python_frame():
'''Try to obtain a (gdbframe, PyFrameObjectPtr) pair for the
currently-running python code, or (None, None)'''
gdb_frame = gdb.selected_frame()
while gdb_frame:
if (gdb_frame.function() is None or
gdb_frame.function().name != 'PyEval_EvalFrameEx'):
gdb_frame = gdb_frame.older()
continue
try:
f = gdb_frame.read_var('f')
return gdb_frame, PyFrameObjectPtr.from_pyobject_ptr(f)
except ValueError:
gdb_frame = gdb_frame.older()
return None, None
class PyList(gdb.Command):
'''List the current Python source code, if any
Use
py-list START
to list at a different line number within the python source.
Use
py-list START, END
to list a specific range of lines within the python source.
'''
def __init__(self):
gdb.Command.__init__ (self,
"py-list",
gdb.COMMAND_FILES,
gdb.COMPLETE_NONE)
def invoke(self, args, from_tty):
import re
start = None
end = None
m = re.match(r'\s*(\d+)\s*', args)
if m:
start = int(m.group(0))
end = start + 10
m = re.match(r'\s*(\d+)\s*,\s*(\d+)\s*', args)
if m:
start, end = map(int, m.groups())
gdb_frame, py_frame = get_selected_python_frame()
if not py_frame:
print 'Unable to locate python frame'
return
fi = FrameInfo(py_frame)
filename = fi.filename()
lineno = fi.current_line_num()
if start is None:
start = lineno - 5
end = lineno + 5
if start<1:
start = 1
with open(filename, 'r') as f:
all_lines = f.readlines()
# start and end are 1-based, all_lines is 0-based;
# so [start-1:end] as a python slice gives us [start, end] as a
# closed interval
for i, line in enumerate(all_lines[start-1:end]):
sys.stdout.write('%4s %s' % (i+start, line))
# ...and register the command:
PyList()
def move_in_stack(move_up):
'''Move up or down the stack (for the py-up/py-down command)'''
gdb_frame, py_frame = get_selected_python_frame()
while gdb_frame:
if move_up:
iter_frame = gdb_frame.older()
else:
iter_frame = gdb_frame.newer()
if not iter_frame:
break
if (iter_frame.function() and
iter_frame.function().name == 'PyEval_EvalFrameEx'):
# Result:
iter_frame.select()
py_frame = get_python_frame(iter_frame)
fi = FrameInfo(py_frame)
print fi
sys.stdout.write(fi.current_line())
return
gdb_frame = iter_frame
if move_up:
print 'Unable to find an older python frame'
else:
print 'Unable to find a newer python frame'
class PyUp(gdb.Command):
'Select and print the python stack frame that called this one (if any)'
def __init__(self):
gdb.Command.__init__ (self,
"py-up",
gdb.COMMAND_STACK,
gdb.COMPLETE_NONE)
def invoke(self, args, from_tty):
move_in_stack(move_up=True)
PyUp()
class PyDown(gdb.Command):
'Select and print the python stack frame called by this one (if any)'
def __init__(self):
gdb.Command.__init__ (self,
"py-down",
gdb.COMMAND_STACK,
gdb.COMPLETE_NONE)
def invoke(self, args, from_tty):
move_in_stack(move_up=False)
PyDown()
class PyBacktrace(gdb.Command):
'Display the current python frame and all the frames within its call stack (if any)'
def __init__(self):
gdb.Command.__init__ (self,
"py-bt",
gdb.COMMAND_STACK,
gdb.COMPLETE_NONE)
def invoke(self, args, from_tty):
gdb_frame, py_frame = get_selected_python_frame()
while gdb_frame:
gdb_frame = gdb_frame.older()
if not gdb_frame:
break
if (gdb_frame.function() and
gdb_frame.function().name == 'PyEval_EvalFrameEx'):
py_frame = get_python_frame(gdb_frame)
fi = FrameInfo(py_frame)
print ' ', fi
sys.stdout.write(fi.current_line())
PyBacktrace()

View File

@ -39,7 +39,7 @@
Summary: Version 3 of the Python programming language aka Python 3000 Summary: Version 3 of the Python programming language aka Python 3000
Name: python3 Name: python3
Version: %{pybasever}.2 Version: %{pybasever}.2
Release: 1%{?dist} Release: 2%{?dist}
License: Python License: Python
Group: Development/Languages Group: Development/Languages
Source: http://python.org/ftp/python/%{version}/Python-%{version}.tar.bz2 Source: http://python.org/ftp/python/%{version}/Python-%{version}.tar.bz2
@ -73,8 +73,9 @@ Source3: macros.pybytecompile
# information # information
# #
# Downloaded from: # Downloaded from:
# http://fedorapeople.org/gitweb?p=dmalcolm/public_git/libpython.git;a=snapshot;h=36a517ef7848cbd0b3dcc7371f32e47ac4c87eba;sf=tgz # http://bugs.python.org/issue8032
Source4: libpython-36a517ef7848cbd0b3dcc7371f32e47ac4c87eba.tar.gz # This is Tools/gdb/libpython.py from v3 of the patch
Source4: python-gdb.py
# Systemtap tapset to make it easier to use the systemtap static probes # Systemtap tapset to make it easier to use the systemtap static probes
# (actually a template; LIBRARY_PATH will get fixed up during install) # (actually a template; LIBRARY_PATH will get fixed up during install)
@ -207,12 +208,6 @@ python 3 code that uses more than just unittest and/or test_support.py.
%setup -q -n Python-%{version} %setup -q -n Python-%{version}
chmod +x %{SOURCE1} chmod +x %{SOURCE1}
# Unpack source archive 4 into this same dir without deleting (-D; -T suppress
# trying to unpack source 0 again):
%if 0%{?with_gdb_hooks}
%setup -q -n Python-%{version} -T -D -a 4
%endif # with_gdb_hooks
%if 0%{?with_systemtap} %if 0%{?with_systemtap}
# Provide an example of usage of the tapset: # Provide an example of usage of the tapset:
cp -a %{SOURCE6} . cp -a %{SOURCE6} .
@ -426,7 +421,7 @@ ldd %{buildroot}/%{dynload_dir}/_curses*.so \
# #
%if 0%{?with_gdb_hooks} %if 0%{?with_gdb_hooks}
mkdir -p %{buildroot}%{_prefix}/lib/debug/%{_libdir} mkdir -p %{buildroot}%{_prefix}/lib/debug/%{_libdir}
cp libpython/libpython.py %{buildroot}%{_prefix}/lib/debug/%{_libdir}/%{py_INSTSONAME}.debug-gdb.py cp %{SOURCE4} %{buildroot}%{_prefix}/lib/debug/%{_libdir}/%{py_INSTSONAME}.debug-gdb.py
%endif # with_gdb_hooks %endif # with_gdb_hooks
# #
@ -700,6 +695,9 @@ rm -fr %{buildroot}
%changelog %changelog
* Wed Mar 24 2010 David Malcolm <dmalcolm@redhat.com> - 3.1.2-2
- refresh gdb hooks to v3 (reworking how they are packaged)
* Sun Mar 21 2010 David Malcolm <dmalcolm@redhat.com> - 3.1.2-1 * Sun Mar 21 2010 David Malcolm <dmalcolm@redhat.com> - 3.1.2-1
- update to 3.1.2: http://www.python.org/download/releases/3.1.2/ - update to 3.1.2: http://www.python.org/download/releases/3.1.2/
- drop upstreamed patch 2 (.pyc permissions handling) - drop upstreamed patch 2 (.pyc permissions handling)

View File

@ -1,2 +1 @@
e9b2198d72a406698c8de07467654204 libpython-36a517ef7848cbd0b3dcc7371f32e47ac4c87eba.tar.gz
45350b51b58a46b029fb06c61257e350 Python-3.1.2.tar.bz2 45350b51b58a46b029fb06c61257e350 Python-3.1.2.tar.bz2