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commit c75bd3a23915c3122070a95e1974e323543ffbe4
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Author: Jan Kratochvil <jan.kratochvil@redhat.com>
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Date: Sun Sep 7 14:09:59 2014 +0200
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Fix crash on Python frame filters with unreadable arg
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https://bugzilla.redhat.com/show_bug.cgi?id=1126177
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ERROR: AddressSanitizer: SEGV on unknown address 0x000000000050 (pc 0x000000992bef sp 0x7ffff9039530 bp 0x7ffff9039540
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T0)
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#0 0x992bee in value_type .../gdb/value.c:925
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#1 0x87c951 in py_print_single_arg python/py-framefilter.c:445
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#2 0x87cfae in enumerate_args python/py-framefilter.c:596
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#3 0x87e0b0 in py_print_args python/py-framefilter.c:968
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It crashes because frame_arg::val is documented it may contain NULL
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(frame_arg::error is then non-NULL) but the code does not handle it.
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Another bug is that py_print_single_arg() calls goto out of its TRY_CATCH
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which messes up GDB cleanup chain crashing GDB later.
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It is probably 7.7 regression (I have not verified it) due to the introduction
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of Python frame filters.
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gdb/ChangeLog
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PR python/17355
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* python/py-framefilter.c (py_print_single_arg): Handle NULL FA->VAL.
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Fix goto out of TRY_CATCH.
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gdb/testsuite/ChangeLog
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PR python/17355
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* gdb.python/amd64-py-framefilter-invalidarg.S: New file.
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* gdb.python/py-framefilter-invalidarg-gdb.py.in: New file.
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* gdb.python/py-framefilter-invalidarg.exp: New file.
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* gdb.python/py-framefilter-invalidarg.py: New file.
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### a/gdb/ChangeLog
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### b/gdb/ChangeLog
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## -1,3 +1,9 @@
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+2014-09-07 Jan Kratochvil <jan.kratochvil@redhat.com>
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+
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+ PR python/17355
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+ * python/py-framefilter.c (py_print_single_arg): Handle NULL FA->VAL.
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+ Fix goto out of TRY_CATCH.
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+
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2014-09-06 Doug Evans <xdje42@gmail.com>
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Tom Tromey <tromey@redhat.com>
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### a/gdb/testsuite/ChangeLog
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### b/gdb/testsuite/ChangeLog
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## -1,3 +1,11 @@
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+2014-09-07 Jan Kratochvil <jan.kratochvil@redhat.com>
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+
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+ PR python/17355
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+ * gdb.python/amd64-py-framefilter-invalidarg.S: New file.
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+ * gdb.python/py-framefilter-invalidarg-gdb.py.in: New file.
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+ * gdb.python/py-framefilter-invalidarg.exp: New file.
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+ * gdb.python/py-framefilter-invalidarg.py: New file.
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+
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2014-09-06 Doug Evans <xdje42@gmail.com>
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PR 15276
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Index: gdb-7.6.1/gdb/python/py-framefilter.c
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===================================================================
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--- gdb-7.6.1.orig/gdb/python/py-framefilter.c 2015-11-27 18:06:21.901228682 +0100
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+++ gdb-7.6.1/gdb/python/py-framefilter.c 2015-11-27 18:06:22.445231731 +0100
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@@ -365,9 +365,12 @@
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{
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struct value *val;
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volatile struct gdb_exception except;
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+ enum py_bt_status retval = PY_BT_OK;
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if (fa != NULL)
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{
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+ if (fa->val == NULL && fa->error == NULL)
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+ return PY_BT_OK;
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language = language_def (SYMBOL_LANGUAGE (fa->sym));
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val = fa->val;
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}
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@@ -433,16 +436,18 @@
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/* For MI print the type, but only for simple values. This seems
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weird, but this is how MI choose to format the various output
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types. */
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- if (args_type == MI_PRINT_SIMPLE_VALUES)
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+ if (args_type == MI_PRINT_SIMPLE_VALUES && val != NULL)
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{
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if (py_print_type (out, val) == PY_BT_ERROR)
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{
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+ retval = PY_BT_ERROR;
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do_cleanups (cleanups);
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- goto error;
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+ continue;
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}
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}
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- annotate_arg_value (value_type (val));
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+ if (val != NULL)
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+ annotate_arg_value (value_type (val));
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/* If the output is to the CLI, and the user option "set print
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frame-arguments" is set to none, just output "...". */
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@@ -454,27 +459,25 @@
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for the case of MI_PRINT_NO_VALUES. */
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if (args_type != NO_VALUES)
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{
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- if (py_print_value (out, val, opts, 0, args_type, language)
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- == PY_BT_ERROR)
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+ if (val == NULL)
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{
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- do_cleanups (cleanups);
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- goto error;
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+ gdb_assert (fa != NULL && fa->error != NULL);
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+ ui_out_field_fmt (out, "value",
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+ _("<error reading variable: %s>"),
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+ fa->error);
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}
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+ else if (py_print_value (out, val, opts, 0, args_type, language)
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+ == PY_BT_ERROR)
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+ retval = PY_BT_ERROR;
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}
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}
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do_cleanups (cleanups);
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}
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if (except.reason < 0)
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- {
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- gdbpy_convert_exception (except);
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- goto error;
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- }
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-
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- return PY_BT_OK;
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+ gdbpy_convert_exception (except);
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- error:
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- return PY_BT_ERROR;
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+ return retval;
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}
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/* Helper function to loop over frame arguments provided by the
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Index: gdb-7.6.1/gdb/testsuite/gdb.python/amd64-py-framefilter-invalidarg.S
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===================================================================
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--- /dev/null 1970-01-01 00:00:00.000000000 +0000
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+++ gdb-7.6.1/gdb/testsuite/gdb.python/amd64-py-framefilter-invalidarg.S 2015-11-27 18:06:22.446231736 +0100
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@@ -0,0 +1,261 @@
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+/* This testcase is part of GDB, the GNU debugger.
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+
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+ Copyright 2014 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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+/* This file is compiled from a single line
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+ int main (int argc, char **argv) { return 0; }
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+ using -g -dA -S -O2 and patched as #if-ed below. */
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+
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+ .file "py-framefilter-invalidarg.c"
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+ .text
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+.Ltext0:
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+ .globl main
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+ .type main, @function
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+main:
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+.LFB0:
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+ .file 1 "py-framefilter-invalidarg.c"
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+ # py-framefilter-invalidarg.c:1
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+ .loc 1 1 0
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+ .cfi_startproc
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+# BLOCK 2 seq:0
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+# PRED: ENTRY (FALLTHRU)
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+ pushq %rbp
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+ .cfi_def_cfa_offset 16
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+ .cfi_offset 6, -16
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+ movq %rsp, %rbp
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+ .cfi_def_cfa_register 6
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+ movl %edi, -4(%rbp)
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+ movq %rsi, -16(%rbp)
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+ # py-framefilter-invalidarg.c:2
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+ .loc 1 2 0
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+ movl $0, %eax
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+ # py-framefilter-invalidarg.c:3
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+ .loc 1 3 0
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+ popq %rbp
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+ .cfi_def_cfa 7, 8
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+# SUCC: EXIT [100.0%]
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+ ret
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+ .cfi_endproc
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+.LFE0:
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+ .size main, .-main
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+.Letext0:
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+ .section .debug_info,"",@progbits
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+.Ldebug_info0:
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+ .long .Le - .Ls # Length of Compilation Unit Info
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+.Ls:
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+ .value 0x4 # DWARF version number
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+ .long .Ldebug_abbrev0 # Offset Into Abbrev. Section
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+ .byte 0x8 # Pointer Size (in bytes)
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+ .uleb128 0x1 # (DIE (0xb) DW_TAG_compile_unit)
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+ .long .LASF3 # DW_AT_producer: "GNU C 4.9.1 20140813 (Red Hat 4.9.1-7) -mtune=generic -march=x86-64 -g"
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+ .byte 0x1 # DW_AT_language
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+ .long .LASF4 # DW_AT_name: "py-framefilter-invalidarg.c"
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+ .long .LASF5 # DW_AT_comp_dir: ""
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+ .quad .Ltext0 # DW_AT_low_pc
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+ .quad .Letext0-.Ltext0 # DW_AT_high_pc
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+ .long .Ldebug_line0 # DW_AT_stmt_list
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+die2d:
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+ .uleb128 0x2 # (DIE (0x2d) DW_TAG_subprogram)
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+ # DW_AT_external
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+ .long .LASF6 # DW_AT_name: "main"
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+ .byte 0x1 # DW_AT_decl_file (py-framefilter-invalidarg.c)
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+ .byte 0x1 # DW_AT_decl_line
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+ # DW_AT_prototyped
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+ .long die6b-.Ldebug_info0 # DW_AT_type
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+ .quad .LFB0 # DW_AT_low_pc
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+ .quad .LFE0-.LFB0 # DW_AT_high_pc
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+ .uleb128 0x1 # DW_AT_frame_base
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+ .byte 0x9c # DW_OP_call_frame_cfa
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+ # DW_AT_GNU_all_call_sites
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+die4e:
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+ .uleb128 0x3 # (DIE (0x4e) DW_TAG_formal_parameter)
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+ .long .LASF0 # DW_AT_name: "argc"
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+ .byte 0x1 # DW_AT_decl_file (py-framefilter-invalidarg.c)
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+ .byte 0x1 # DW_AT_decl_line
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+ .long die6b-.Ldebug_info0 # DW_AT_type
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2c2fa1 |
+#if 0
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+ .uleb128 0x2 # DW_AT_location
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+ .byte 0x91 # DW_OP_fbreg
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+ .sleb128 -20
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+#endif
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2c2fa1 |
+#if 0
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+ .uleb128 1f - 2f # DW_AT_location
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+2:
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+ .byte 0x03 # DW_OP_addr
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2c2fa1 |
+ .quad 0
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+1:
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2c2fa1 |
+#endif
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2c2fa1 |
+#if 1
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+ .uleb128 1f - 2f # DW_AT_location
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+2:
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+ .byte 0x13 # DW_OP_drop
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2c2fa1 |
+ .quad 0
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+1:
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2c2fa1 |
+#endif
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2c2fa1 |
+die5c:
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2c2fa1 |
+ .uleb128 0x3 # (DIE (0x5c) DW_TAG_formal_parameter)
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2c2fa1 |
+ .long .LASF1 # DW_AT_name: "argv"
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+ .byte 0x1 # DW_AT_decl_file (py-framefilter-invalidarg.c)
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+ .byte 0x1 # DW_AT_decl_line
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+ .long die72-.Ldebug_info0 # DW_AT_type
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+ .uleb128 0x2 # DW_AT_location
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+ .byte 0x91 # DW_OP_fbreg
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2c2fa1 |
+ .sleb128 -32
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2c2fa1 |
+ .byte 0 # end of children of DIE 0x2d
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2c2fa1 |
+die6b:
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2c2fa1 |
+ .uleb128 0x4 # (DIE (0x6b) DW_TAG_base_type)
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2c2fa1 |
+ .byte 0x4 # DW_AT_byte_size
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2c2fa1 |
+ .byte 0x5 # DW_AT_encoding
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2c2fa1 |
+ .ascii "int\0" # DW_AT_name
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2c2fa1 |
+die72:
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2c2fa1 |
+ .uleb128 0x5 # (DIE (0x72) DW_TAG_pointer_type)
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2c2fa1 |
+ .byte 0x8 # DW_AT_byte_size
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2c2fa1 |
+ .long die78-.Ldebug_info0 # DW_AT_type
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2c2fa1 |
+die78:
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|
2c2fa1 |
+ .uleb128 0x5 # (DIE (0x78) DW_TAG_pointer_type)
|
|
|
2c2fa1 |
+ .byte 0x8 # DW_AT_byte_size
|
|
|
2c2fa1 |
+ .long die7e-.Ldebug_info0 # DW_AT_type
|
|
|
2c2fa1 |
+die7e:
|
|
|
2c2fa1 |
+ .uleb128 0x6 # (DIE (0x7e) DW_TAG_base_type)
|
|
|
2c2fa1 |
+ .byte 0x1 # DW_AT_byte_size
|
|
|
2c2fa1 |
+ .byte 0x6 # DW_AT_encoding
|
|
|
2c2fa1 |
+ .long .LASF2 # DW_AT_name: "char"
|
|
|
2c2fa1 |
+ .byte 0 # end of children of DIE 0xb
|
|
|
2c2fa1 |
+.Le:
|
|
|
2c2fa1 |
+ .section .debug_abbrev,"",@progbits
|
|
|
2c2fa1 |
+.Ldebug_abbrev0:
|
|
|
2c2fa1 |
+ .uleb128 0x1 # (abbrev code)
|
|
|
2c2fa1 |
+ .uleb128 0x11 # (TAG: DW_TAG_compile_unit)
|
|
|
2c2fa1 |
+ .byte 0x1 # DW_children_yes
|
|
|
2c2fa1 |
+ .uleb128 0x25 # (DW_AT_producer)
|
|
|
2c2fa1 |
+ .uleb128 0xe # (DW_FORM_strp)
|
|
|
2c2fa1 |
+ .uleb128 0x13 # (DW_AT_language)
|
|
|
2c2fa1 |
+ .uleb128 0xb # (DW_FORM_data1)
|
|
|
2c2fa1 |
+ .uleb128 0x3 # (DW_AT_name)
|
|
|
2c2fa1 |
+ .uleb128 0xe # (DW_FORM_strp)
|
|
|
2c2fa1 |
+ .uleb128 0x1b # (DW_AT_comp_dir)
|
|
|
2c2fa1 |
+ .uleb128 0xe # (DW_FORM_strp)
|
|
|
2c2fa1 |
+ .uleb128 0x11 # (DW_AT_low_pc)
|
|
|
2c2fa1 |
+ .uleb128 0x1 # (DW_FORM_addr)
|
|
|
2c2fa1 |
+ .uleb128 0x12 # (DW_AT_high_pc)
|
|
|
2c2fa1 |
+ .uleb128 0x7 # (DW_FORM_data8)
|
|
|
2c2fa1 |
+ .uleb128 0x10 # (DW_AT_stmt_list)
|
|
|
2c2fa1 |
+ .uleb128 0x17 # (DW_FORM_sec_offset)
|
|
|
2c2fa1 |
+ .byte 0
|
|
|
2c2fa1 |
+ .byte 0
|
|
|
2c2fa1 |
+ .uleb128 0x2 # (abbrev code)
|
|
|
2c2fa1 |
+ .uleb128 0x2e # (TAG: DW_TAG_subprogram)
|
|
|
2c2fa1 |
+ .byte 0x1 # DW_children_yes
|
|
|
2c2fa1 |
+ .uleb128 0x3f # (DW_AT_external)
|
|
|
2c2fa1 |
+ .uleb128 0x19 # (DW_FORM_flag_present)
|
|
|
2c2fa1 |
+ .uleb128 0x3 # (DW_AT_name)
|
|
|
2c2fa1 |
+ .uleb128 0xe # (DW_FORM_strp)
|
|
|
2c2fa1 |
+ .uleb128 0x3a # (DW_AT_decl_file)
|
|
|
2c2fa1 |
+ .uleb128 0xb # (DW_FORM_data1)
|
|
|
2c2fa1 |
+ .uleb128 0x3b # (DW_AT_decl_line)
|
|
|
2c2fa1 |
+ .uleb128 0xb # (DW_FORM_data1)
|
|
|
2c2fa1 |
+ .uleb128 0x27 # (DW_AT_prototyped)
|
|
|
2c2fa1 |
+ .uleb128 0x19 # (DW_FORM_flag_present)
|
|
|
2c2fa1 |
+ .uleb128 0x49 # (DW_AT_type)
|
|
|
2c2fa1 |
+ .uleb128 0x13 # (DW_FORM_ref4)
|
|
|
2c2fa1 |
+ .uleb128 0x11 # (DW_AT_low_pc)
|
|
|
2c2fa1 |
+ .uleb128 0x1 # (DW_FORM_addr)
|
|
|
2c2fa1 |
+ .uleb128 0x12 # (DW_AT_high_pc)
|
|
|
2c2fa1 |
+ .uleb128 0x7 # (DW_FORM_data8)
|
|
|
2c2fa1 |
+ .uleb128 0x40 # (DW_AT_frame_base)
|
|
|
2c2fa1 |
+ .uleb128 0x18 # (DW_FORM_exprloc)
|
|
|
2c2fa1 |
+ .uleb128 0x2117 # (DW_AT_GNU_all_call_sites)
|
|
|
2c2fa1 |
+ .uleb128 0x19 # (DW_FORM_flag_present)
|
|
|
2c2fa1 |
+ .byte 0
|
|
|
2c2fa1 |
+ .byte 0
|
|
|
2c2fa1 |
+ .uleb128 0x3 # (abbrev code)
|
|
|
2c2fa1 |
+ .uleb128 0x5 # (TAG: DW_TAG_formal_parameter)
|
|
|
2c2fa1 |
+ .byte 0 # DW_children_no
|
|
|
2c2fa1 |
+ .uleb128 0x3 # (DW_AT_name)
|
|
|
2c2fa1 |
+ .uleb128 0xe # (DW_FORM_strp)
|
|
|
2c2fa1 |
+ .uleb128 0x3a # (DW_AT_decl_file)
|
|
|
2c2fa1 |
+ .uleb128 0xb # (DW_FORM_data1)
|
|
|
2c2fa1 |
+ .uleb128 0x3b # (DW_AT_decl_line)
|
|
|
2c2fa1 |
+ .uleb128 0xb # (DW_FORM_data1)
|
|
|
2c2fa1 |
+ .uleb128 0x49 # (DW_AT_type)
|
|
|
2c2fa1 |
+ .uleb128 0x13 # (DW_FORM_ref4)
|
|
|
2c2fa1 |
+ .uleb128 0x2 # (DW_AT_location)
|
|
|
2c2fa1 |
+ .uleb128 0x18 # (DW_FORM_exprloc)
|
|
|
2c2fa1 |
+ .byte 0
|
|
|
2c2fa1 |
+ .byte 0
|
|
|
2c2fa1 |
+ .uleb128 0x4 # (abbrev code)
|
|
|
2c2fa1 |
+ .uleb128 0x24 # (TAG: DW_TAG_base_type)
|
|
|
2c2fa1 |
+ .byte 0 # DW_children_no
|
|
|
2c2fa1 |
+ .uleb128 0xb # (DW_AT_byte_size)
|
|
|
2c2fa1 |
+ .uleb128 0xb # (DW_FORM_data1)
|
|
|
2c2fa1 |
+ .uleb128 0x3e # (DW_AT_encoding)
|
|
|
2c2fa1 |
+ .uleb128 0xb # (DW_FORM_data1)
|
|
|
2c2fa1 |
+ .uleb128 0x3 # (DW_AT_name)
|
|
|
2c2fa1 |
+ .uleb128 0x8 # (DW_FORM_string)
|
|
|
2c2fa1 |
+ .byte 0
|
|
|
2c2fa1 |
+ .byte 0
|
|
|
2c2fa1 |
+ .uleb128 0x5 # (abbrev code)
|
|
|
2c2fa1 |
+ .uleb128 0xf # (TAG: DW_TAG_pointer_type)
|
|
|
2c2fa1 |
+ .byte 0 # DW_children_no
|
|
|
2c2fa1 |
+ .uleb128 0xb # (DW_AT_byte_size)
|
|
|
2c2fa1 |
+ .uleb128 0xb # (DW_FORM_data1)
|
|
|
2c2fa1 |
+ .uleb128 0x49 # (DW_AT_type)
|
|
|
2c2fa1 |
+ .uleb128 0x13 # (DW_FORM_ref4)
|
|
|
2c2fa1 |
+ .byte 0
|
|
|
2c2fa1 |
+ .byte 0
|
|
|
2c2fa1 |
+ .uleb128 0x6 # (abbrev code)
|
|
|
2c2fa1 |
+ .uleb128 0x24 # (TAG: DW_TAG_base_type)
|
|
|
2c2fa1 |
+ .byte 0 # DW_children_no
|
|
|
2c2fa1 |
+ .uleb128 0xb # (DW_AT_byte_size)
|
|
|
2c2fa1 |
+ .uleb128 0xb # (DW_FORM_data1)
|
|
|
2c2fa1 |
+ .uleb128 0x3e # (DW_AT_encoding)
|
|
|
2c2fa1 |
+ .uleb128 0xb # (DW_FORM_data1)
|
|
|
2c2fa1 |
+ .uleb128 0x3 # (DW_AT_name)
|
|
|
2c2fa1 |
+ .uleb128 0xe # (DW_FORM_strp)
|
|
|
2c2fa1 |
+ .byte 0
|
|
|
2c2fa1 |
+ .byte 0
|
|
|
2c2fa1 |
+ .byte 0
|
|
|
2c2fa1 |
+ .section .debug_aranges,"",@progbits
|
|
|
2c2fa1 |
+ .long 0x2c # Length of Address Ranges Info
|
|
|
2c2fa1 |
+ .value 0x2 # DWARF Version
|
|
|
2c2fa1 |
+ .long .Ldebug_info0 # Offset of Compilation Unit Info
|
|
|
2c2fa1 |
+ .byte 0x8 # Size of Address
|
|
|
2c2fa1 |
+ .byte 0 # Size of Segment Descriptor
|
|
|
2c2fa1 |
+ .value 0 # Pad to 16 byte boundary
|
|
|
2c2fa1 |
+ .value 0
|
|
|
2c2fa1 |
+ .quad .Ltext0 # Address
|
|
|
2c2fa1 |
+ .quad .Letext0-.Ltext0 # Length
|
|
|
2c2fa1 |
+ .quad 0
|
|
|
2c2fa1 |
+ .quad 0
|
|
|
2c2fa1 |
+ .section .debug_line,"",@progbits
|
|
|
2c2fa1 |
+.Ldebug_line0:
|
|
|
2c2fa1 |
+ .section .debug_str,"MS",@progbits,1
|
|
|
2c2fa1 |
+.LASF1:
|
|
|
2c2fa1 |
+ .string "argv"
|
|
|
2c2fa1 |
+.LASF4:
|
|
|
2c2fa1 |
+ .string "py-framefilter-invalidarg.c"
|
|
|
2c2fa1 |
+.LASF5:
|
|
|
2c2fa1 |
+ .string ""
|
|
|
2c2fa1 |
+.LASF0:
|
|
|
2c2fa1 |
+ .string "argc"
|
|
|
2c2fa1 |
+.LASF3:
|
|
|
2c2fa1 |
+ .string "GNU C 4.9.1 20140813 (Red Hat 4.9.1-7) -mtune=generic -march=x86-64 -g"
|
|
|
2c2fa1 |
+.LASF6:
|
|
|
2c2fa1 |
+ .string "main"
|
|
|
2c2fa1 |
+.LASF2:
|
|
|
2c2fa1 |
+ .string "char"
|
|
|
2c2fa1 |
+ .ident "GCC: (GNU) 4.9.1 20140813 (Red Hat 4.9.1-7)"
|
|
|
2c2fa1 |
+ .section .note.GNU-stack,"",@progbits
|
|
|
2c2fa1 |
Index: gdb-7.6.1/gdb/testsuite/gdb.python/py-framefilter-invalidarg-gdb.py.in
|
|
|
2c2fa1 |
===================================================================
|
|
|
2c2fa1 |
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
|
|
|
2c2fa1 |
+++ gdb-7.6.1/gdb/testsuite/gdb.python/py-framefilter-invalidarg-gdb.py.in 2015-11-27 18:06:22.446231736 +0100
|
|
|
2c2fa1 |
@@ -0,0 +1,48 @@
|
|
|
2c2fa1 |
+# Copyright (C) 2014 Free Software Foundation, Inc.
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+# This program is free software; you can redistribute it and/or modify
|
|
|
2c2fa1 |
+# it under the terms of the GNU General Public License as published by
|
|
|
2c2fa1 |
+# the Free Software Foundation; either version 3 of the License, or
|
|
|
2c2fa1 |
+# (at your option) any later version.
|
|
|
2c2fa1 |
+#
|
|
|
2c2fa1 |
+# This program is distributed in the hope that it will be useful,
|
|
|
2c2fa1 |
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
2c2fa1 |
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
2c2fa1 |
+# GNU General Public License for more details.
|
|
|
2c2fa1 |
+#
|
|
|
2c2fa1 |
+# You should have received a copy of the GNU General Public License
|
|
|
2c2fa1 |
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+# This file is part of the GDB testsuite. It tests Python-based
|
|
|
2c2fa1 |
+# frame-filters.
|
|
|
2c2fa1 |
+import gdb
|
|
|
2c2fa1 |
+import itertools
|
|
|
2c2fa1 |
+from gdb.FrameDecorator import FrameDecorator
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+class FrameObjFile ():
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+ def __init__ (self):
|
|
|
2c2fa1 |
+ self.name = "Filter1"
|
|
|
2c2fa1 |
+ self.priority = 1
|
|
|
2c2fa1 |
+ self.enabled = False
|
|
|
2c2fa1 |
+ gdb.current_progspace().frame_filters ["Progspace" + self.name] = self
|
|
|
2c2fa1 |
+ gdb.current_objfile().frame_filters ["ObjectFile" + self.name] = self
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+ def filter (self, frame_iter):
|
|
|
2c2fa1 |
+ return frame_iter
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+class FrameObjFile2 ():
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+ def __init__ (self):
|
|
|
2c2fa1 |
+ self.name = "Filter2"
|
|
|
2c2fa1 |
+ self.priority = 100
|
|
|
2c2fa1 |
+ self.enabled = True
|
|
|
2c2fa1 |
+ gdb.current_progspace().frame_filters ["Progspace" + self.name] = self
|
|
|
2c2fa1 |
+ gdb.current_objfile().frame_filters ["ObjectFile" + self.name] = self
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+ def filter (self, frame_iter):
|
|
|
2c2fa1 |
+ return frame_iter
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+FrameObjFile()
|
|
|
2c2fa1 |
+FrameObjFile2()
|
|
|
2c2fa1 |
Index: gdb-7.6.1/gdb/testsuite/gdb.python/py-framefilter-invalidarg.exp
|
|
|
2c2fa1 |
===================================================================
|
|
|
2c2fa1 |
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
|
|
|
2c2fa1 |
+++ gdb-7.6.1/gdb/testsuite/gdb.python/py-framefilter-invalidarg.exp 2015-11-27 18:19:26.346625521 +0100
|
|
|
2c2fa1 |
@@ -0,0 +1,86 @@
|
|
|
2c2fa1 |
+# Copyright (C) 2014 Free Software Foundation, Inc.
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+# This program is free software; you can redistribute it and/or modify
|
|
|
2c2fa1 |
+# it under the terms of the GNU General Public License as published by
|
|
|
2c2fa1 |
+# the Free Software Foundation; either version 3 of the License, or
|
|
|
2c2fa1 |
+# (at your option) any later version.
|
|
|
2c2fa1 |
+#
|
|
|
2c2fa1 |
+# This program is distributed in the hope that it will be useful,
|
|
|
2c2fa1 |
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
2c2fa1 |
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
2c2fa1 |
+# GNU General Public License for more details.
|
|
|
2c2fa1 |
+#
|
|
|
2c2fa1 |
+# You should have received a copy of the GNU General Public License
|
|
|
2c2fa1 |
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+load_lib gdb-python.exp
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+standard_testfile amd64-py-framefilter-invalidarg.S
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+if { ![istarget x86_64-*-* ] || ![is_lp64_target] } {
|
|
|
2c2fa1 |
+ verbose "Skipping py-framefilter-invalidarg."
|
|
|
2c2fa1 |
+ return
|
|
|
2c2fa1 |
+}
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+# We cannot use prepare_for_testing as we have to set the safe-patch
|
|
|
2c2fa1 |
+# to check objfile and progspace printers.
|
|
|
2c2fa1 |
+if {[build_executable $testfile.exp $testfile $srcfile {}] == -1} {
|
|
|
2c2fa1 |
+ return -1
|
|
|
2c2fa1 |
+}
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+# Start with a fresh gdb.
|
|
|
2c2fa1 |
+gdb_exit
|
|
|
2c2fa1 |
+gdb_start
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+# Skip all tests if Python scripting is not enabled.
|
|
|
2c2fa1 |
+if { [skip_python_tests] } { continue }
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+### IMPORT:
|
|
|
2c2fa1 |
+# Like remote_download but provides a gdb-specific behavior. If DEST
|
|
|
2c2fa1 |
+# is "host", and the host is not remote, and TOFILE is not specified,
|
|
|
2c2fa1 |
+# then the [file tail] of FROMFILE is passed through
|
|
|
2c2fa1 |
+# standard_output_file to compute the destination.
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+proc gdb_remote_download {dest fromfile {tofile {}}} {
|
|
|
2c2fa1 |
+ if {$dest == "host" && ![is_remote host] && $tofile == ""} {
|
|
|
2c2fa1 |
+ set tofile [standard_output_file [file tail $fromfile]]
|
|
|
2c2fa1 |
+ }
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+ if { $tofile == "" } {
|
|
|
2c2fa1 |
+ return [remote_download $dest $fromfile]
|
|
|
2c2fa1 |
+ } else {
|
|
|
2c2fa1 |
+ return [remote_download $dest $fromfile $tofile]
|
|
|
2c2fa1 |
+ }
|
|
|
2c2fa1 |
+}
|
|
|
2c2fa1 |
+### IMPORT^
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+# Make the -gdb.py script available to gdb, it is automagically loaded by gdb.
|
|
|
2c2fa1 |
+# Care is taken to put it in the same directory as the binary so that
|
|
|
2c2fa1 |
+# gdb will find it.
|
|
|
2c2fa1 |
+set remote_obj_python_file \
|
|
|
2c2fa1 |
+ [remote_download \
|
|
|
2c2fa1 |
+ host ${srcdir}/${subdir}/${testfile}-gdb.py.in \
|
|
|
2c2fa1 |
+ [standard_output_file ${testfile}-gdb.py]]
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+gdb_reinitialize_dir $srcdir/$subdir
|
|
|
2c2fa1 |
+gdb_test_no_output "set auto-load safe-path ${remote_obj_python_file}" \
|
|
|
2c2fa1 |
+ "set auto-load safe-path"
|
|
|
2c2fa1 |
+gdb_load ${binfile}
|
|
|
2c2fa1 |
+# Verify gdb loaded the script.
|
|
|
2c2fa1 |
+gdb_test "info auto-load python-scripts" "Yes.*/${testfile}-gdb.py.*" \
|
|
|
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+ "Test auto-load had loaded python scripts"
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2c2fa1 |
+
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2c2fa1 |
+if ![runto_main] then {
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2c2fa1 |
+ perror "couldn't run to breakpoint"
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2c2fa1 |
+ return
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2c2fa1 |
+}
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2c2fa1 |
+gdb_test_no_output "set python print-stack full" \
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2c2fa1 |
+ "Set python print-stack to full"
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|
2c2fa1 |
+
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2c2fa1 |
+# Load global frame-filters
|
|
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2c2fa1 |
+set remote_python_file [gdb_remote_download host \
|
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2c2fa1 |
+ ${srcdir}/${subdir}/${testfile}.py]
|
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|
2c2fa1 |
+gdb_test_no_output "python exec (open ('${remote_python_file}').read ())" \
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2c2fa1 |
+ "Load python file"
|
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2c2fa1 |
+
|
|
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2c2fa1 |
+gdb_test "bt" " in niam \\(argc=<error reading variable: dwarf expression stack underflow>, argv=0x\[0-9a-f\]+\\) at py-framefilter-invalidarg.c:\[0-9\]+" "bt full with filters"
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|
|
2c2fa1 |
Index: gdb-7.6.1/gdb/testsuite/gdb.python/py-framefilter-invalidarg.py
|
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|
2c2fa1 |
===================================================================
|
|
|
2c2fa1 |
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
|
|
|
2c2fa1 |
+++ gdb-7.6.1/gdb/testsuite/gdb.python/py-framefilter-invalidarg.py 2015-11-27 18:06:22.447231742 +0100
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|
|
2c2fa1 |
@@ -0,0 +1,59 @@
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|
2c2fa1 |
+# Copyright (C) 2014 Free Software Foundation, Inc.
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|
2c2fa1 |
+
|
|
|
2c2fa1 |
+# This program is free software; you can redistribute it and/or modify
|
|
|
2c2fa1 |
+# it under the terms of the GNU General Public License as published by
|
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|
2c2fa1 |
+# the Free Software Foundation; either version 3 of the License, or
|
|
|
2c2fa1 |
+# (at your option) any later version.
|
|
|
2c2fa1 |
+#
|
|
|
2c2fa1 |
+# This program is distributed in the hope that it will be useful,
|
|
|
2c2fa1 |
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
2c2fa1 |
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
2c2fa1 |
+# GNU General Public License for more details.
|
|
|
2c2fa1 |
+#
|
|
|
2c2fa1 |
+# You should have received a copy of the GNU General Public License
|
|
|
2c2fa1 |
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+# This file is part of the GDB testsuite. It tests Python-based
|
|
|
2c2fa1 |
+# frame-filters.
|
|
|
2c2fa1 |
+import gdb
|
|
|
2c2fa1 |
+import itertools
|
|
|
2c2fa1 |
+from gdb.FrameDecorator import FrameDecorator
|
|
|
2c2fa1 |
+import copy
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+class Reverse_Function (FrameDecorator):
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+ def __init__(self, fobj):
|
|
|
2c2fa1 |
+ super(Reverse_Function, self).__init__(fobj)
|
|
|
2c2fa1 |
+ self.fobj = fobj
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+ def function (self):
|
|
|
2c2fa1 |
+ fname = str (self.fobj.function())
|
|
|
2c2fa1 |
+ if (fname == None or fname == ""):
|
|
|
2c2fa1 |
+ return None
|
|
|
2c2fa1 |
+ if fname == 'end_func':
|
|
|
2c2fa1 |
+ extra = self.fobj.inferior_frame().read_var('str').string()
|
|
|
2c2fa1 |
+ else:
|
|
|
2c2fa1 |
+ extra = ''
|
|
|
2c2fa1 |
+ fname = fname[::-1] + extra
|
|
|
2c2fa1 |
+ return fname
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+class FrameFilter ():
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+ def __init__ (self):
|
|
|
2c2fa1 |
+ self.name = "Reverse"
|
|
|
2c2fa1 |
+ self.priority = 100
|
|
|
2c2fa1 |
+ self.enabled = True
|
|
|
2c2fa1 |
+ gdb.frame_filters [self.name] = self
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+ def filter (self, frame_iter):
|
|
|
2c2fa1 |
+ # Python 3.x moved the itertools.imap functionality to map(),
|
|
|
2c2fa1 |
+ # so check if it is available.
|
|
|
2c2fa1 |
+ if hasattr(itertools, "imap"):
|
|
|
2c2fa1 |
+ frame_iter = itertools.imap (Reverse_Function,
|
|
|
2c2fa1 |
+ frame_iter)
|
|
|
2c2fa1 |
+ else:
|
|
|
2c2fa1 |
+ frame_iter = map(Reverse_Function, frame_iter)
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+ return frame_iter
|
|
|
2c2fa1 |
+
|
|
|
2c2fa1 |
+FrameFilter()
|