316 lines
10 KiB
Diff
316 lines
10 KiB
Diff
From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
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From: Fedora GDB patches <invalid@email.com>
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Date: Fri, 27 Oct 2017 21:07:50 +0200
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Subject: gdb-dts-rhel6-python-compat.patch
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;; [rhel6] DTS backward Python compatibility API (BZ 1020004, Phil Muldoon).
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;;=fedora
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https://bugzilla.redhat.com/show_bug.cgi?id=1020004
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diff --git a/gdb/data-directory/Makefile.in b/gdb/data-directory/Makefile.in
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--- a/gdb/data-directory/Makefile.in
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+++ b/gdb/data-directory/Makefile.in
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@@ -71,6 +71,8 @@ PYTHON_FILE_LIST = \
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gdb/__init__.py \
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gdb/FrameDecorator.py \
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gdb/FrameIterator.py \
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+ gdb/FrameWrapper.py \
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+ gdb/backtrace.py \
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gdb/frames.py \
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gdb/printing.py \
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gdb/prompt.py \
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@@ -79,6 +81,7 @@ PYTHON_FILE_LIST = \
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gdb/xmethod.py \
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gdb/command/__init__.py \
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gdb/command/explore.py \
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+ gdb/command/backtrace.py \
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gdb/command/frame_filters.py \
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gdb/command/pretty_printers.py \
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gdb/command/prompt.py \
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diff --git a/gdb/python/lib/gdb/FrameWrapper.py b/gdb/python/lib/gdb/FrameWrapper.py
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new file mode 100644
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--- /dev/null
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+++ b/gdb/python/lib/gdb/FrameWrapper.py
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@@ -0,0 +1,122 @@
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+# Wrapper API for frames.
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+
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+# Copyright (C) 2008, 2009 Free Software Foundation, Inc.
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+
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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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+
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+import gdb
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+
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+# FIXME: arguably all this should be on Frame somehow.
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+class FrameWrapper:
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+ def __init__ (self, frame):
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+ self.frame = frame;
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+
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+ def write_symbol (self, stream, sym, block):
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+ if len (sym.linkage_name):
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+ nsym, is_field_of_this = gdb.lookup_symbol (sym.linkage_name, block)
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+ if nsym.addr_class != gdb.SYMBOL_LOC_REGISTER:
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+ sym = nsym
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+
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+ stream.write (sym.print_name + "=")
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+ try:
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+ val = self.read_var (sym)
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+ if val != None:
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+ val = str (val)
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+ # FIXME: would be nice to have a more precise exception here.
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+ except RuntimeError as text:
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+ val = text
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+ if val == None:
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+ stream.write ("???")
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+ else:
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+ stream.write (str (val))
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+
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+ def print_frame_locals (self, stream, func):
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+
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+ try:
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+ block = self.frame.block()
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+ except RuntimeError:
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+ block = None
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+
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+ while block != None:
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+ if block.is_global or block.is_static:
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+ break
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+
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+ for sym in block:
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+ if sym.is_argument:
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+ continue;
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+
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+ self.write_symbol (stream, sym, block)
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+ stream.write ('\n')
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+
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+ def print_frame_args (self, stream, func):
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+
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+ try:
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+ block = self.frame.block()
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+ except RuntimeError:
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+ block = None
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+
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+ while block != None:
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+ if block.function != None:
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+ break
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+ block = block.superblock
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+
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+ first = True
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+ for sym in block:
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+ if not sym.is_argument:
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+ continue;
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+
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+ if not first:
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+ stream.write (", ")
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+
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+ self.write_symbol (stream, sym, block)
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+ first = False
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+
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+ # FIXME: this should probably just be a method on gdb.Frame.
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+ # But then we need stream wrappers.
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+ def describe (self, stream, full):
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+ if self.type () == gdb.DUMMY_FRAME:
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+ stream.write (" <function called from gdb>\n")
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+ elif self.type () == gdb.SIGTRAMP_FRAME:
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+ stream.write (" <signal handler called>\n")
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+ else:
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+ sal = self.find_sal ()
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+ pc = self.pc ()
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+ name = self.name ()
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+ if not name:
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+ name = "??"
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+ if pc != sal.pc or not sal.symtab:
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+ stream.write (" 0x%08x in" % pc)
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+ stream.write (" " + name + " (")
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+
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+ func = self.function ()
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+ self.print_frame_args (stream, func)
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+
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+ stream.write (")")
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+
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+ if sal.symtab and sal.symtab.filename:
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+ stream.write (" at " + sal.symtab.filename)
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+ stream.write (":" + str (sal.line))
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+
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+ if not self.name () or (not sal.symtab or not sal.symtab.filename):
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+ lib = gdb.solib_name (pc)
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+ if lib:
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+ stream.write (" from " + lib)
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+
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+ stream.write ("\n")
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+
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+ if full:
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+ self.print_frame_locals (stream, func)
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+
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+ def __getattr__ (self, name):
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+ return getattr (self.frame, name)
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diff --git a/gdb/python/lib/gdb/backtrace.py b/gdb/python/lib/gdb/backtrace.py
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new file mode 100644
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--- /dev/null
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+++ b/gdb/python/lib/gdb/backtrace.py
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@@ -0,0 +1,42 @@
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+# Filtering backtrace.
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+
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+# Copyright (C) 2008, 2011 Free Software Foundation, Inc.
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+
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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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+
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+import gdb
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+import itertools
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+
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+# Our only exports.
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+__all__ = ['push_frame_filter', 'create_frame_filter']
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+
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+old_frame_filter = None
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+
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+def push_frame_filter (constructor):
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+ """Register a new backtrace filter class with the 'backtrace' command.
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+The filter will be passed an iterator as an argument. The iterator
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+will return gdb.Frame-like objects. The filter should in turn act as
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+an iterator returning such objects."""
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+ global old_frame_filter
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+ if old_frame_filter == None:
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+ old_frame_filter = constructor
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+ else:
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+ old_frame_filter = lambda iterator, filter = frame_filter: constructor (filter(iterator))
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+
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+def create_frame_filter (iter):
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+ global old_frame_filter
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+ if old_frame_filter is None:
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+ return iter
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+ return old_frame_filter (iter)
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+
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diff --git a/gdb/python/lib/gdb/command/backtrace.py b/gdb/python/lib/gdb/command/backtrace.py
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new file mode 100644
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--- /dev/null
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+++ b/gdb/python/lib/gdb/command/backtrace.py
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@@ -0,0 +1,106 @@
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+# New backtrace command.
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+
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+# Copyright (C) 2008, 2009, 2011 Free Software Foundation, Inc.
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+
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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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+
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+import gdb
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+import gdb.backtrace
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+import itertools
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+from gdb.FrameIterator import FrameIterator
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+from gdb.FrameWrapper import FrameWrapper
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+import sys
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+
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+class ReverseBacktraceParameter (gdb.Parameter):
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+ """The new-backtrace command can show backtraces in 'reverse' order.
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+This means that the innermost frame will be printed last.
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+Note that reverse backtraces are more expensive to compute."""
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+
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+ set_doc = "Enable or disable reverse backtraces."
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+ show_doc = "Show whether backtraces will be printed in reverse order."
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+
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+ def __init__(self):
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+ gdb.Parameter.__init__ (self, "reverse-backtrace",
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+ gdb.COMMAND_STACK, gdb.PARAM_BOOLEAN)
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+ # Default to compatibility with gdb.
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+ self.value = False
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+
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+class FilteringBacktrace (gdb.Command):
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+ """Print backtrace of all stack frames, or innermost COUNT frames.
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+With a negative argument, print outermost -COUNT frames.
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+Use of the 'full' qualifier also prints the values of the local variables.
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+Use of the 'raw' qualifier avoids any filtering by loadable modules.
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+"""
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+
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+ def __init__ (self):
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+ # FIXME: this is not working quite well enough to replace
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+ # "backtrace" yet.
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+ gdb.Command.__init__ (self, "new-backtrace", gdb.COMMAND_STACK)
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+ self.reverse = ReverseBacktraceParameter()
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+
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+ def reverse_iter (self, iter):
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+ result = []
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+ for item in iter:
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+ result.append (item)
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+ result.reverse()
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+ return result
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+
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+ def final_n (self, iter, x):
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+ result = []
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+ for item in iter:
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+ result.append (item)
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+ return result[x:]
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+
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+ def invoke (self, arg, from_tty):
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+ i = 0
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+ count = 0
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+ filter = True
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+ full = False
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+
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+ for word in arg.split (" "):
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+ if word == '':
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+ continue
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+ elif word == 'raw':
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+ filter = False
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+ elif word == 'full':
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+ full = True
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+ else:
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+ count = int (word)
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+
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+ # FIXME: provide option to start at selected frame
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+ # However, should still number as if starting from newest
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+ newest_frame = gdb.newest_frame()
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+ iter = itertools.imap (FrameWrapper,
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+ FrameIterator (newest_frame))
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+ if filter:
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+ iter = gdb.backtrace.create_frame_filter (iter)
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+
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+ # Now wrap in an iterator that numbers the frames.
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+ iter = itertools.izip (itertools.count (0), iter)
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+
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+ # Reverse if the user wanted that.
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+ if self.reverse.value:
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+ iter = self.reverse_iter (iter)
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+
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+ # Extract sub-range user wants.
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+ if count < 0:
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+ iter = self.final_n (iter, count)
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+ elif count > 0:
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+ iter = itertools.islice (iter, 0, count)
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+
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+ for pair in iter:
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+ sys.stdout.write ("#%-2d" % pair[0])
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+ pair[1].describe (sys.stdout, full)
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+
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+FilteringBacktrace()
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