Commit Graph

80687 Commits

Author SHA1 Message Date
Tom Tromey
8236def8eb constify probe.c function
This constifies an argument to info_probes_for_ops.

2014-06-18  Tom Tromey  <tromey@redhat.com>

	* probe.c (info_probes_for_ops): Make "arg" const.
	* probe.h (info_probes_for_ops): Update.
2014-06-18 08:16:54 -06:00
Tom Tromey
3977b71f1d constify struct block in some places
This makes some spots in gdb, particularly general_symbol_info, use a
"const struct block", then fixes the fallout.

The justification is that, ordinarily, blocks ought to be readonly.
Note though that we can't add "const" in the blockvector due to block
relocation.  This can be done once blocks are made independent of the
program space.

2014-06-18  Tom Tromey  <tromey@redhat.com>

	* varobj.c (varobj_create): Update.
	* valops.c (value_of_this): Update.
	* tracepoint.c (add_local_symbols, scope_info): Update.
	* symtab.h (struct general_symbol_info) <block>: Now const.
	* symtab.c (skip_prologue_sal)
	(default_make_symbol_completion_list_break_on)
	(skip_prologue_using_sal): Update.
	* stack.h (iterate_over_block_locals)
	(iterate_over_block_local_vars): Update.
	* stack.c (print_frame_args): Update.
	(iterate_over_block_locals, iterate_over_block_local_vars): Make
	parameter const.
	(get_selected_block): Make return type const.
	* python/py-frame.c (frapy_block): Update.
	* python/py-block.c (gdbpy_block_for_pc): Update.
	* p-exp.y (%union) <bval>: Now const.
	* mi/mi-cmd-stack.c (list_args_or_locals): Update.
	* mdebugread.c (mylookup_symbol, parse_procedure): Update.
	* m2-exp.y (%union) <bval>: Now const.
	* linespec.c (get_current_search_block): Make return type const.
	(create_sals_line_offset, find_label_symbols): Update.
	* inline-frame.c (inline_frame_sniffer, skip_inline_frames):
	Update.
	(block_starting_point_at): Make "block" const.
	* infrun.c (insert_exception_resume_breakpoint): Make "b" const.
	(check_exception_resume): Update.
	* guile/scm-frame.c (gdbscm_frame_block): Update.
	* guile/scm-block.c (gdbscm_lookup_block): Update.
	* frame.h (get_frame_block): Update.
	(get_selected_block): Make return type const.
	* frame.c (frame_id_inner): Update.
	* f-valprint.c (info_common_command_for_block)
	(info_common_command): Update.
	* dwarf2loc.c (dwarf2_find_location_expression)
	(dwarf_expr_frame_base, dwarf2_compile_expr_to_ax)
	(locexpr_describe_location_piece): Update.
	* c-exp.y (%union) <bval>: Now const.
	* breakpoint.c (resolve_sal_pc): Update.
	* blockframe.c (get_frame_block):Make return type const.
	(get_pc_function_start, get_frame_function, find_pc_sect_function)
	(block_innermost_frame): Update.
	* block.h (blockvector_for_pc, blockvector_for_pc_sect)
	(block_for_pc, block_for_pc_sect): Update.
	* block.c (blockvector_for_pc_sect, blockvector_for_pc): Make
	'pblock' const.
	(block_for_pc_sect, block_for_pc): Make return type const.
	* ax-gdb.c (gen_expr): Update.
	* alpha-mdebug-tdep.c (find_proc_desc): Update.
	* ada-lang.c (ada_read_renaming_var_value): Make 'block' const.
	(ada_make_symbol_completion_list, ada_add_exceptions_from_frame)
	(ada_read_var_value): Update.
	* ada-exp.y (struct name_info) <block>: Now const.
	(%union): Likewise.
	(block_lookup): Constify.
2014-06-18 08:16:52 -06:00
Siva Chandra
5d376983ca Make xmethods tests not to depend on inferior IO.
gdb/testsuite/

	PR gdb/17017
	* gdb.python/py-xmethods.cc: Add global function call counters and
	increment them in their respective functions.  Remove "cout"
	statements.
	* gdb.python/py-xmethods.exp: Make tests check the global function
	call counters instead of depending on inferior IO.
2014-06-18 04:31:47 -07:00
Gary Benson
5171def394 Move macros from i386-{nat,low}.c to i386-{nat,low}.h
This commit moves macros required by the soon-to-be-created
nat/i386-dregs.c into i386-{nat,low}.h.
2014-06-18 11:46:51 +01:00
Gary Benson
b922889128 Create nat/i386-dregs.h
This commit moves code to be shared from i386-{nat,low}.[ch]
into a new file, nat/i386-dregs.h.

gdb/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* nat/i386-dregs.h: New file.
	* Makefile.in (HFILES_NO_SRCDIR): Add the above.
	* i386-nat.h (i386-dregs.h): New include.
	(DR_FIRSTADDR): Now in i386-dregs.h.
	(DR_LASTADDR): Likewise.
	(DR_NADDR): Likewise.
	(DR_STATUS): Likewise.
	(DR_CONTROL): Likewise.
	(i386_debug_reg_state): Likewise.
	* i386-nat.c (ALL_DEBUG_REGISTERS): Likewise.

gdb/gdbserver/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-low.h (i386-dregs.h): New include.
	(DR_FIRSTADDR): Now in i386-dregs.h.
	(DR_LASTADDR): Likewise.
	(DR_NADDR): Likewise.
	(DR_STATUS): Likewise.
	(DR_CONTROL): Likewise.
	(i386_debug_reg_state): Likewise.
	(i386_dr_insert_watchpoint): Likewise.
	(i386_dr_remove_watchpoint): Likewise.
	(i386_dr_region_ok_for_watchpoint): Likewise.
	(i386_dr_stopped_data_address): Likewise.
	(i386_dr_stopped_by_watchpoint): Likewise.
	* i386-low.c (ALL_DEBUG_REGISTERS): Likewise.
2014-06-18 11:46:35 +01:00
Luis Machado
a1aa2221cb Symptom:
Using the test program gdb.base/foll-fork.c, with follow-fork-mode set to
"child" and detach-on-fork set to "off", stepping or running past the fork
call results in the child process running to completion, when it should
just finish the single step.  In addition, the breakpoint is not removed
from the parent process, so if it is resumed it receives a SIGTRAP.

Cause:

No matter what the setting for detach-on-fork, when stepping past a fork,
the single-step breakpoint (step_resume_breakpoint) is not handled
correctly in the parent.  The SR breakpoint is cloned for the child
process, but before the clone is associated with the child it is treated as
a duplicate of the original, associated wth the parent.  This results in
the insertion state of the original SR breakpoint and the clone being
"swapped" by breakpoint.c:update_global_location_list, so that the clone is
marked as inserted.

In the case where the parent is not detached, the two breakpoints remain in
that state.  The breakpoint is never inserted in the child, because
although the cloned SR breakpoint is associated with the child, it is
marked as inserted.  When the child is resumed, it runs to completion.  The
breakpoint is never removed from the parent, so that if it is resumed after
the child exits, it gets a SIGTRAP.

Here is the sequence of events:

1) handle_inferior_event: FORK event is recognized.

2) handle_inferior_event: detach_breakpoints removes all breakpoints
from the child.

3) follow_fork: the parent SR breakpoint is cloned.  Part of this procedure
is to call update_global_location_list, which swaps the insertion state of
the original and cloned SR breakpoints as part of ensuring that duplicate
breakpoints are only inserted once.  At this point the original SR
breakpoint is not marked as inserted, and the clone is.  The breakpoint is
actually inserted in the parent but not the child.

4) follow_fork: the original breakpoint is deleted by calling
delete_step_resume_breakpoint.  Since the original is not marked as
inserted, the actual breakpoint remains in the parent process.
update_global_location_list is called again as part of the deletion.  The
clone is still associated with the parent, but since it is marked as
enabled and inserted, the breakpoint is left in the parent.

5) follow_fork: if detach-on-fork is 'on', the actual breakpoint will be
removed from the parent in target_detach, based on the cloned breakpoint
still associated with the parent.  Then the clone is no longer marked as
inserted.  In follow_inferior_reset_breakpoints the clone is associated
with the child, and can be inserted.

If detach-on-fork is 'off', the actual breakpoint in the parent is never
removed (although the breakpoint had been deleted from the list).  Since
the clone continues to be marked 'inserted', the SR breakpoint is never
inserted in the child.

Fix:

Set the cloned breakpoint as disabled from the moment it is created.  This
is done by modifying clone_momentary_breakpoint to take an additional
argument, LOC_ENABLED, which is used as the value of the
bp_location->enabled member.  The clone must be disabled at that point
because clone_momentary_breakpoint calls update_global_location_list, which
will swap treat the clone as a duplicate of the original breakpoint if it
is enabled.

All the calls to clone_momentary_breakpoint had to be modified to pass '1'
or '0'.  I looked at implementing an enum for the enabled member, but
concluded that readability would suffer because there are so many places it
is used as a boolean, e.g. "if (bl->enabled)".

In follow_inferior_reset_breakpoints the clone is set to enabled once it
has been associated with the child process.  With this, the bp_location
'inserted' member is maintained correctly throughout the follow-fork
procedure and the behavior is as expected.

The same treatment is given to the exception_resume_breakpoint when
following a fork.

Testing:

Ran 'make check' on Linux x64.

Along with the fix above, the coverage of the follow-fork test
gdb.base/foll-fork.exp was expanded to:

1) cover all the combinations of values for
   follow-fork-mode and detach-on-fork

2) make sure that both user breakpoints and
   single-step breakpoints are propagated
   correctly to the child

3) check that the inferior list has the
   expected contents after following the fork.

4) check that unfollowed, undetached inferiors
   can be resumed.

gdb/

2014-06-18  Don Breazeal  <donb@codesourcery.com>

	* breakpoint.c (set_longjmp_breakpoint): Call
	momentary_breakpoint_from_master with additional argument.
	(set_longjmp_breakpoint_for_call_dummy): Call
	momentary_breakpoint_from_master with additional argument.
	(set_std_terminate_breakpoint): Call
	momentary_breakpoint_from_master with additional argument.
	(momentary_breakpoint_from_master): Add argument to function
	definition and use it to initialize structure member flag.
	(clone_momentary_breakpoint): Call
	momentary_breakpoint_from_master with additional argument.
	* infrun.c (follow_inferior_reset_breakpoints): Clear structure
	member flags set in momentary_breakpoint_from_master.

gdb/testsuite/

2014-06-18  Don Breazeal  <donb@codesourcery.com>

	* gdb.base/foll-fork.exp (default_fork_parent_follow):
	Deleted procedure.
	(explicit_fork_parent_follow): Deleted procedure.
	(explicit_fork_child_follow): Deleted procedure.
	(test_follow_fork): New procedure.
	(do_fork_tests): Replace calls to deleted procedures with
	calls to test_follow_fork and reset GDB for subsequent
	procedure calls.
2014-06-18 10:25:47 +01:00
Gary Benson
4be83cc2b2 Rename functions and make nonstatic as necessary
This commit renames the functions that are to be shared.
Functions to be shared that were static are made nonstatic.

gdb/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-nat.c (i386_show_dr): Renamed to
	i386_dr_show and made nonstatic.  All uses updated.
	(i386_length_and_rw_bits): Renamed to
	i386_dr_length_and_rw_bits and made nonstatic.
	All uses updated.
	(i386_insert_aligned_watchpoint): Renamed to
	i386_dr_insert_aligned_watchpoint and made nonstatic.
	All uses updated.
	(i386_remove_aligned_watchpoint): Renamed to
	i386_dr_remove_aligned_watchpoint and made nonstatic.
	All uses updated.
	(i386_update_inferior_debug_regs): Renamed to
	i386_dr_update_inferior_debug_regs and made nonstatic.
	All uses updated.

gdb/gdbserver/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-low.h (i386_low_insert_watchpoint): Renamed to
	i386_dr_insert_watchpoint.
	(i386_low_remove_watchpoint): Renamed to
	i386_dr_remove_watchpoint.
	(i386_low_region_ok_for_watchpoint): Renamed to
	i386_dr_region_ok_for_watchpoint.
	(i386_low_stopped_data_address): Renamed to
	i386_dr_stopped_data_address.
	(i386_low_stopped_by_watchpoint): Renamed to
	i386_dr_stopped_by_watchpoint.
	* i386-low.c (i386_show_dr): Renamed to
	i386_dr_show and made nonstatic.  All uses updated.
	(i386_length_and_rw_bits): Renamed to
	i386_dr_length_and_rw_bits and made nonstatic.
	All uses updated.
	(i386_insert_aligned_watchpoint): Renamed to
	i386_dr_insert_aligned_watchpoint and made nonstatic.
	All uses updated.
	(i386_remove_aligned_watchpoint): Renamed to
	i386_dr_remove_aligned_watchpoint and made nonstatic.
	All uses updated.
	(i386_update_inferior_debug_regs): Renamed to
	i386_dr_update_inferior_debug_regs and made nonstatic.
	All uses updated.
	(i386_low_insert_watchpoint): Renamed to
	i386_dr_insert_watchpoint.  All uses updated.
	(i386_low_remove_watchpoint): Renamed to
	i386_dr_remove_watchpoint.  All uses updated.
	(i386_low_region_ok_for_watchpoint): Renamed to
	i386_dr_region_ok_for_watchpoint.  All uses updated.
	(i386_low_stopped_data_address): Renamed to
	i386_dr_stopped_data_address.  All uses updated.
	(i386_low_stopped_by_watchpoint): Renamed to
	i386_dr_stopped_by_watchpoint.  All uses updated.
2014-06-18 10:15:27 +01:00
Gary Benson
131aa0d4fe Abstract i386_dr_low access
This commit adds macros to abstract access to the i386_dr_low
function vector used by i386-nat.c.  The macros are named so
as to match the names of the functions that do the same work
in gdbserver.

gdb/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-nat.c (i386_dr_low_can_set_addr): New macro.
	(i386_dr_low_can_set_control): Likewise.
	(i386_dr_low_set_addr): Likewise.
	(i386_dr_low_set_control): Likewise.
	(i386_dr_low_get_addr): Likewise.
	(i386_dr_low_get_status): Likewise.
	(i386_dr_low_get_control): Likewise.
	(i386_insert_aligned_watchpoint): Use new macros.
	(i386_update_inferior_debug_regs): Likewise.
	(i386_stopped_data_address): Likewise.

gdb/gdbserver/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-low.c (i386_dr_low_can_set_addr): New macro.
	(i386_dr_low_can_set_control): Likewise.
	(i386_insert_aligned_watchpoint): New check.
2014-06-18 10:15:25 +01:00
Gary Benson
d9305f7fef Merge i386_update_inferior_debug_regs
This commit synchronizes the i386_update_inferior_debug_regs functions
in i386-nat.c and i386-low.c.

gdb/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-nat.c (i386_update_inferior_debug_regs) <state>:
	New parameter.  All uses updated.

gdb/gdbserver/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-low.c (i386_update_inferior_debug_regs) <inf_state>:
	Renamed to state.
2014-06-18 10:15:23 +01:00
Gary Benson
ea008da432 Rename maint_show_dr to debug_hw_points
This commit renames maint_show_dr to debug_hw_points in i386-nat.c.

gdb/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-nat.c (maint_show_dr): Renamed to debug_hw_points.
	All uses updated.
2014-06-18 10:15:21 +01:00
Gary Benson
e927c9fccb Merge error handling
This commit makes all error handling in i386-low.c use internal_error
rather than fatal and error.

gdb/gdbserver/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-low.c (i386_length_and_rw_bits): Use internal_error
	instead of fatal and error.
	(i386_handle_nonaligned_watchpoint): Likewise.
2014-06-18 10:15:19 +01:00
Gary Benson
1b6d4134c7 Merge printing code
This commit synchronizes the debug printing code in i386-nat.c and
i386-low.c.

gdb/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-nat.c (debug_printf): New macro.
	(i386_get_debug_register_length): Likewise.
	(TARGET_HAS_DR_LEN_8): Use above macro.
	(i386_show_dr): Use debug_printf instead of puts_unfiltered
	and printf_unfiltered.  Use phex to format values.

gdb/gdbserver/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-low.c (i386_get_debug_register_length): New macro.
	(TARGET_HAS_DR_LEN_8): Remove conditional.  Use above macro.
	(i386_show_dr): Use debug_printf instead of fprintf.  Use
	phex to format values.
2014-06-18 10:15:17 +01:00
Gary Benson
9b4550ef5e Add a const
This commit adds a const that was in i386-low.c but not in i386-nat.c.

gdb/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-nat.c (i386_handle_nonaligned_watchpoint) <size_try_array>:
	Make const.
2014-06-18 10:15:15 +01:00
Gary Benson
6e62758f02 Comment changes
This commit fixes various comment differences between
i386-nat.[ch] and i386-low.[ch].

gdb/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-nat.c: Comment changes.

gdb/gdbserver/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-low.h: Comment changes.
	* i386-low.c: Likewise.
2014-06-18 10:15:08 +01:00
Gary Benson
51c79e94b2 Remove unused macro
This commit removes an unused macro from i386-nat.c.

gdb/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-nat.c (I386_DR_WATCH_MASK): Remove macro.
2014-06-18 10:15:05 +01:00
Gary Benson
3e11889a6e Remove unnecessary prototypes
This commit removes four unnecessary prototypes from i386-nat.c.

gdb/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-nat.c (i386_length_and_rw_bits): Remove prototype.
	(i386_insert_aligned_watchpoint): Likewise.
	(i386_remove_aligned_watchpoint): Likewise.
	(i386_handle_nonaligned_watchpoint): Likewise.
2014-06-18 10:14:59 +01:00
Gary Benson
fc6e2f03be Whitespace changes
This commit fixes various whitespace differences between i386-nat.c
and i386-low.c.

gdb/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-nat.c: Whitespace changes.

gdb/gdbserver/
2014-06-18  Gary Benson  <gbenson@redhat.com>

	* i386-low.c: Whitespace changes.
2014-06-18 10:14:56 +01:00
Samuel Bronson
6a83deeaa8 Brown paper bag: left out part of the ChangeLog entry ... 2014-06-18 00:26:46 -04:00
Samuel Bronson
2afe7d509a * MAINTAINERS: Update Roland McGrath's email address.
Thanks to Sergio Durigan Junior for pointing out that he left
Red Hat a while ago, and giving me a current address.
2014-06-18 00:12:57 -04:00
Alan Modra
fc68cc33b1 daily update 2014-06-18 09:53:09 +09:30
Hans-Peter Nilsson
a968e61d8e GAS: Fix MMIX err-fb-2.s regression caused by recent generic GAS changes. 2014-06-18 00:11:01 +02:00
Tom Tromey
3bca49eec2 remove redundant savestring declaration
I happened to notice that savestring is still declared in utils.h,
despite the fact that it was moved to common/ a while back.  This
patch removes the redundant declaration.  Tested by rebuilding.  I'm
committing this as obvious.

2014-06-17  Tom Tromey  <tromey@redhat.com>

	* utils.h (savestring): Remove declaration.
2014-06-17 12:57:06 -06:00
Tom Tromey
6e366df19d use make_cleanup_freeargv
This replaces a function cast with a call to make_cleanup_freeargv.

I'm checking this in as obvious.

2014-06-17  Tom Tromey  <tromey@redhat.com>

	* remote.c (extended_remote_run): Use make_cleanup_freeargv.
2014-06-17 11:43:21 -06:00
Chris Metcalf
6d1ace6861 This fixes a bug whereby #line directives inside a macro would be ignored,
thus resulting in bad line debug information.

	PR gas/16908
	* macro.c (buffer_and_nest): Honour #line directives inside
	macros.
2014-06-17 17:21:08 +01:00
Nick Clifton
548a235728 Prevent large (or negative) version values from overflowing into other fields when
parsing version strings.

	PR binutils/16923
	* rcparse.y (fixedverinfo): Prevent large version numbers from
	corrupting other values.
2014-06-17 16:50:15 +01:00
Yao Qi
0fc0599720 Different outputs affected by hosts
We find the following fails in gdb test on mingw host.

FAIL: gdb.base/wchar.exp: print repeat
FAIL: gdb.base/wchar.exp: print repeat_p
FAIL: gdb.base/wchar.exp: print repeat (print null on)
FAIL: gdb.base/wchar.exp: print repeat (print elements 3)
FAIL: gdb.base/wchar.exp: print repeat_p (print elements 3)

print repeat^M
$7 = L"A", '¢' <repeats 21 times>, "B", '\000' <repeats 104 times>^M
(gdb) FAIL: gdb.base/wchar.exp: print repeat

the \242 is expected in the test but cent sign is displayed.

In valprint.c:print_wchar, wchar_printable is called to determine
whether a wchar is printable.  wchar_printable calls iswprint but
the iswprint's return value depends on LC_CTYPE setting of locale [1, 2].
The output may vary with different locale settings and OS.  IMO, '¢'
(cent sign) is a correct output on Windows.

[1] http://pubs.opengroup.org/onlinepubs/009604499/functions/iswprint.html
[2] http://msdn.microsoft.com/en-us/library/ewx8s4kw.aspx

This patch is set $cent to cent sign if the GDB is running on a
Windows host.

gdb/testsuite:

2014-06-17  Yao Qi  <yao@codesourcery.com>

	* gdb.base/wchar.exp: Set $cent to \u00A2 if "host-charset" is
	CP1252.
2014-06-17 19:35:32 +08:00
Luis Machado
70795c525e In a couple functions (type_update_when_use_rtti_test and
skip_type_update_when_not_use_rtti_test) the testcase assumes an
uninitialized object has a specific type. In particular, 'ptr' and
's'.

In reality the compiler is free to do what it wants with that
uninitialized variable, even initialize it beforehand with the future
assignment's value.  This is exactly what happens on some targets.

ptr should have type 'Base *', but it really has type 'Derived *'
because it is already initialized (earlier) by the compiler. The same
thing happens to 's'.

The following patch addresses this by explicitly initializing those
variables so the compiler doesn't optimize their assignments and GDB
can print their correct values.

2014-06-17  Luis Machado  <lgustavo@codesourcery.com>

	* gdb.mi/mi-var-rtti.cc (type_update_when_use_rtti_test):
	Initialize ptr and S explicitly.
	(skip_type_update_when_not_use_rtti_test): Likewise.
2014-06-17 10:42:23 +01:00
Jiong Wang
c8de034b6a gas/ARM: Misses deprecated IT instruction warning for ARMv8
Add sp increment and decrement to ARMv8 IT block deprecate
  pattern.

  gas/
    * config/tc-arm.c (depr_it_insns): New check for inc/dec sp.

  gas/testsuite/
    * gas/arm/armv8-a-it-bad.s: New check for inc/dec sp.
    * gas/arm/armv8-a-it-bad.l: Likewise.
2014-06-17 10:12:52 +01:00
Alan Modra
dfac1fa730 daily update 2014-06-17 09:31:07 +09:30
Hans-Peter Nilsson
29cf29a2cf GAS: Fix CRIS double-error reports caused by recent generic GAS changes. 2014-06-17 00:56:01 +02:00
Keith Seitz
6be47f0c48 Fix for PR mi/15863
If an MI client creates a varobj and attempts to update the root
/before/ the inferior is started, gdb will throw an internal error:

(gdb)
-var-create * - batch_flag
^done,name="var1",numchild="0",value="0",type="int",has_more="0"
(gdb)
-var-update var1
^done,changelist=[]
(gdb)
-var-update *
~"../../src/gdb/thread.c:628: internal-error: is_thread_state: Assertion `tp' failed.\nA problem internal to GDB has been detected,\nfurther debugging may prove unreliable.\nQuit this debugging session? "
~"(y or n) "

The function that handles the varobj update in the failing case,
mi_cmd_var_udpate_iter, checks if the thread/inferior is stopped before
attempting to update the varobj. It calls is_stopped (inferior_ptid)
which calls is_thread_state:

    tp = find_thread_ptid (ptid);
    gdb_assert (tp);

When there is no inferior, ptid is null_ptid, and find_thread_ptid (null_ptid)
returns NULL and the assertion is triggered.

This patch changes mi_cmd_var_update_iter to behave the same way
"-var-update var1" does: by calling the thread "stopped" if
there is no inferior (and thereby calling varobj_update_one).

ChangeLog
2014-06-16  Keith Seitz  <keiths@redhat.com>

	PR mi/15863
	* mi/mi-cmd-var.c (mi_cmd_var_update_iter): Do not attempt
	to update the varobj if inferior_ptid is null_ptid.

testsuite/ChangeLog
2014-06-16  Keith Seitz  <keiths@redhat.com>

	PR mi/15863
	* gdb.mi/mi-var-cmd.exp: Add test for -var-update before
	the inferior is started.
2014-06-16 11:38:19 -07:00
Nick Clifton
b97e87cc01 Fixes a problem exposed by the aarcg64/illegal.s test case - where the assembler was
generating too many error messages.

	* config/tc-aarch64.c (md_apply_fix): Ignore unused relocs.
2014-06-16 17:40:02 +01:00
Tom Tromey
7bc112c1b9 constify to_info_proc and friends
This makes a parameter of to_info_proc const and then fixes up some
fallout, including parameters in a couple of gdbarch methods.

I could not test the procfs.c change.  I verified it by inspection.
If this causes an error here, it will be trivial to fix.

2014-06-16  Tom Tromey  <tromey@redhat.com>

	* target.h (struct target_ops) <to_info_proc>: Make parameter
	const.
	(target_info_proc): Update.
	* target.c (target_info_proc): Make "args" const.
	* procfs.c (procfs_info_proc): Update.
	* linux-tdep.c (linux_info_proc): Update.
	(linux_core_info_proc_mappings): Make "args" const.
	(linux_core_info_proc): Update.
	* gdbarch.sh (info_proc, core_info_proc): Make "args" const.
	* gdbarch.c: Rebuild.
	* gdbarch.h: Rebuild.
	* corelow.c (core_info_proc): Update.
2014-06-16 10:29:17 -06:00
Tom Tromey
fee354eeef constify to_disconnect
This constifies an parameter of to_disconnect and updates
target_disconnect as well.

2014-06-16  Tom Tromey  <tromey@redhat.com>

	* target.h (struct target_ops) <to_disconnect>: Make parameter
	const.
	(target_disconnect): Update.
	* target.c (target_disconnect): Make "args" const.
	* target-delegates.c: Rebuild.
	* remote.c (remote_disconnect): Update.
	* record.h (record_disconnect): Update.
	* record.c (record_disconnect): Update.
	* inf-child.c (inf_child_disconnect): Update.
2014-06-16 10:29:17 -06:00
Tom Tromey
a30bf1f15c constify to_rcmd
This makes the "command" parameter of the to_rcmd target method const.

2014-06-16  Tom Tromey  <tromey@redhat.com>

	* target.h (struct target_ops) <to_rcmd>: Make "command" const.
	* target.c (debug_to_rcmd, default_rcmd): Update.
	* target-delegates.c: Rebuild.
	* remote.c (remote_rcmd): Update.
	* monitor.c (monitor_rcmd): Update.
2014-06-16 10:29:17 -06:00
Jiong Wang
f4c51f600e This fixes the aarch64 assembler so that it will generate error messages when
a syntax error is detected in an optional operand.

  * config/tc-aarch64.c (END_OF_INSN): New macro.
  (parse_operands): Handle operand given and be in wrong
  format when operand is optional.

  * gas/aarch64/diagnostic.s: New test patterns.
  * gas/aarch64/diagnostic.l: Likewise.
2014-06-16 17:22:19 +01:00
Will Newton
9f19ab6dfa ld/ARM: Fix IFUNC and TLS descriptors in the same shared object
Combining TLS descriptors and GNU indirect functions in the same
object could lead to assertions or multiple dynamic relocations
for the same GOT slot. Fix the bookkeeping so this doesn't happen.

This allows building and make checking glibc with -mtls-dialect=gnu2.

bfd/ChangeLog:

2014-06-16  Will Newton  <will.newton@linaro.org>

	* elf32-arm.c (elf32_arm_allocate_plt_entry): Increment
	htab->next_tls_desc_index in the non-IPLT case.
	Calculate GOT offset correctly for the non-IPLT case.
	(allocate_dynrelocs_for_symbol): Don't increment
	htab->next_tls_desc_index here.

ld/testsuite/ChangeLog:

2014-06-16  Will Newton  <will.newton@linaro.org>

	* ld-arm/arm-elf.exp: Add ifunc-gdesc test.
	* ld-arm/ifunc-gdesc.r: New file.
	* ld-arm/ifunc-gdesc.s: Likewise.
	* ld-arm/ifunc-gdesc.ver: Likewise.
2014-06-16 15:51:21 +01:00
Pedro Alves
d03de42190 "$ gdb PROGRAM" vs "(gdb) file PROGRAM" difference; warn on failure to remove breakpoint.
Turns out there's a difference between loading the program with "gdb
PROGRAM", vs loading it with "(gdb) file PROGRAM".  The latter results
in the objfile ending up with OBJF_USERLOADED set, while not with the
former.  (That difference seems bogus, but still that's not the point
of this patch.  We can revisit that afterwards.)

The new code that suppresses breakpoint removal errors for
add-symbol-file objects ends up being too greedy:

      /* In some cases, we might not be able to remove a breakpoint in
         a shared library that has already been removed, but we have
         not yet processed the shlib unload event.  Similarly for an
         unloaded add-symbol-file object - the user might not yet have
         had the chance to remove-symbol-file it.  shlib_disabled will
         be set if the library/object has already been removed, but
         the breakpoint hasn't been uninserted yet, e.g., after
         "nosharedlibrary" or "remove-symbol-file" with breakpoints
         always-inserted mode.  */
      if (val
          && (bl->loc_type == bp_loc_software_breakpoint
              && (bl->shlib_disabled
                  || solib_name_from_address (bl->pspace, bl->address)
                  || userloaded_objfile_contains_address_p (bl->pspace,
                                                            bl->address))))
        val = 0;

as it turns out that OBJF_USERLOADED can be set for objfiles loaded by
some other means not add-symbol-file.  In this case, symbol-file (or
"file", which is really just "exec-file"+"symbol-file").

Recall that add-symbol-file is documented as:

 (gdb) help add-symbol-file
 Load symbols from FILE, assuming FILE has been dynamically loaded.
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

And it's the "dynamically loaded" aspect that the breakpoint.c code
cares about.  So make add-symbol-file set OBJF_SHARED on its objfiles
too, and tweak the breakpoint.c code to look for OBJF_SHARED instead
of OBJF_USERLOADED.

This restores back the missing breakpoint removal warning when we let
sss-bp-on-user-bp-2.exp run on native GNU/Linux
(https://sourceware.org/ml/gdb-patches/2014-06/msg00335.html):

 (gdb) PASS: gdb.base/sss-bp-on-user-bp-2.exp: define stepi_del_break
 stepi_del_break
 warning: Error removing breakpoint 3
 (gdb) FAIL: gdb.base/sss-bp-on-user-bp-2.exp: stepi_del_break

I say "restores" because this was GDB's behavior in 7.7 and earlier.

And, likewise, "file" with no arguments only started turning
breakpoints set in the main executable to "<pending>" with the
remote-symbol-file patch (63644780).  The old behavior is now
restored, and we break-unload-file.exp test now exercizes both "gdb;
file PROGRAM" and "gdb PROGRAM".

gdb/
2014-06-16  Pedro Alves  <palves@redhat.com>

	* breakpoint.c (insert_bp_location, remove_breakpoint_1): Adjust.
	(disable_breakpoints_in_freed_objfile): Skip objfiles that don't
	have OBJF_SHARED set.
	* objfiles.c (userloaded_objfile_contains_address_p): Rename to...
	(shared_objfile_contains_address_p): ... this.  Check OBJF_SHARED
	instead of OBJF_USERLOADED.
	* objfiles.h (OBJF_SHARED): Update comment.
	(userloaded_objfile_contains_address_p): Rename to ...
	(shared_objfile_contains_address_p): ... this, and update
	comments.
	* symfile.c (add_symbol_file_command): Also set OBJF_SHARED in the
	new objfile.
	(remove_symbol_file_command): Skip objfiles that don't have
	OBJF_SHARED set.

gdb/testsuite/
2014-06-16  Pedro Alves  <palves@redhat.com>

	* gdb.base/break-main-file-remove-fail.c: New file.
	* gdb.base/break-main-file-remove-fail.exp: New file.
	* gdb.base/break-unload-file.exp: Use build_executable instead of
	prepare_for_testing.
	(test_break): New parameter "initial_load".  Handle it.
	(top level): Add initial_load cmdline/file axis.
2014-06-16 15:38:13 +01:00
Tom Tromey
99f4262f2c fix incorrect comments in minsyms.h
minsyms.h incorrectly claims that a couple of functions call
prim_record_minimal_symbol_full with COPY_NAME=0 -- but actually they
pass 1.  Passing 1 is the correct behavior, so this patch fixes the
documentation.

I'm checking this in as obvious.

2014-06-16  Tom Tromey  <tromey@redhat.com>

	* minsyms.h (prim_record_minimal_symbol)
	(prim_record_minimal_symbol_and_info): Update comments.
2014-06-16 07:53:36 -06:00
Alan Modra
e1279d1d6b Fix duplicated assignments to __rel_iplt and __rela_iplt symbols
and fix more nds32 dependencies.

	* scripttempl/elf.sc: Edit out __rela_iplt symbol assignments from
	.rel sections, and __rel_iplt from .rela sections.
	* scripttempl/nds32elf.sc: Likewise.
	* Makefile.am (ends32*.c): Depend on nds32elf.sc.
	* Makefile.in: Regenerate.
2014-06-16 22:32:45 +09:30
Alan Modra
85024cd8bc Run write_object_file after errors
This is to fix unitialised memory access when printing listings.
Many targets don't initialise parts of insn frags or data frags that
have fixups, relying on md_apply_fix to finalise the frag.  Which is
fine normally, but means we need to run write_object_file after
errors, for listings.  Otherwise MALLOC_PERTURB_=1 causes errors like:
x86_64-linux  +FAIL: i386 mpx-inval-1
x86_64-linux  +FAIL: i386 inval-equ-1
x86_64-linux  +FAIL: i386 x86-64-mpx-inval-1

Running write_object_file after errors requires some tweaking to the
testsuite, since we then get extra errors reported from md_apply_fix.

gas/
	* write.h (subsegs_finish): Delete declaration.
	* write.c (subsegs_finish): Make static.
	(write_object_file): Call subsegs_finish from here.  Don't print
	warning and error count here..
	* as.c (main): ..do so here instead.  Remove dead code for "no
	object file generated".  Split out count strings to better support
	internationalisation.  Don't call subsegs_finish. Tidy setting of
	"keep_it".  Run write_object_file even after errors.
	(keep_it): Make static.
	* config/obj-elf.c (elf_frob_symbol): Remove assert.
	(elf_frob_file_before_adjust): Likewise.
gas/testsuite/
	* gas/elf/bad-group.s: Use %function.
	* gas/elf/bad-group.err: Expect correct line number.  Allow
	other errors.
	* gas/elf/bad-size.err: Allow other errors.  Match expected
	error somewhat more rigorously.
	* gas/i386/reloc32.l: Allow other errors.
	* gas/i386/mpx-inval-1.l: Match applied relocs.
	* gas/i386/x86-64-mpx-inval-1.l: Likewise, and nop padding.
	* gas/i386/x86-64-mpx-inval-2.l: Match nop padding, and allow
	other errors.
	* gas/macros/dot.s: Use .balign.
	* gas/macros/dot.l: Update alignment output.
	* gas/symver/symver6.l: Allow other errors.
2014-06-16 12:34:45 +09:30
Alan Modra
97d24fbbf5 Don't leave DLX the_insn uninitialised
In particular the_insn.reloc must be initialised, otherwise the early
exit cases for bad opcodes will result in cascading errors if
write_object_file is called after an error.

	* config/tc-dlx.c (machine_ip): Move initialisation of the_insn
	earlier.
2014-06-16 12:33:42 +09:30
Alan Modra
1ab668bf2a Report an error on x86 pcrel BFD_RELOC_SIZE64
* config/tc-i386.c (reloc): Don't avoid pcrel check for
	BFD_RELOC_SIZE64.  Return NO_RELOC on failing pcrel check.
2014-06-16 12:32:56 +09:30
Alan Modra
7e9def1e93 Fix unintitialised TIC6X data
MALLOC_PERTURB_=1 results in the following fails due to uninitialised
exindx data:

FAIL: C6X unwinding directives 1 (little endian)
FAIL: C6X unwinding directives 2 (big endian)
FAIL: C6X unwinding directives 3 (segment change)
FAIL: ld-tic6x/unwind-1
FAIL: ld-tic6x/unwind-2
FAIL: ld-tic6x/unwind-3
FAIL: ld-tic6x/unwind-4
FAIL: ld-tic6x/unwind-6

	* config/tc-tic6x.c (s_tic6x_ehtype): Clear after frag_more.
	(tic6x_output_exidx_entry): Likewise.
	(md_apply_fix): Simplify 1 byte md_number_to_chars.
2014-06-16 12:31:53 +09:30
Alan Modra
6e210b4129 Fix TIC54X buffer overruns
MALLOC_PERTURB_=1 results in "FAIL: c54x macros".

	* config/tc-tic54x.c (tic54x_mlib): Don't write garbage past
	end of archive to temp file.
	(tic54x_start_line_hook): Start scan for parallel on next line,
	not one char into next line (which may overrun the buffer).
2014-06-16 12:30:53 +09:30
Alan Modra
ee0738df02 Fix uninitialised VAX insn
MALLOC_PERTURB_=1 results in "FAIL: VAX ELF relocations", due to object
file being emitted with uninitialised fields.  Since these fields had
RELA relocs the field value won't be used at final link time, so the
problem is only seen in relocatable object files.

This rewrite of md_apply_fix clears all fields with relocs, whereas
before some fields had non-zero values.

gas/
	* config/tc-vax.c (md_apply_fix): Rewrite.
	(tc_gen_reloc, vax_cons, vax_cons_fix_new): Style: Use NO_RELOC
	define rather than the equivalent BFD_RELOC_NONE.
gas/testsuite/
	* gas/vax/elf-rel.d: Update.
2014-06-16 12:29:52 +09:30
Alan Modra
eb9a5ecfac Fix uninitialised VAX .got and .got.plt section
Cures these failures with MALLOC_PERTURB_=1
FAIL: GOT test (executable)
FAIL: GOT test (shared library)
FAIL: VAX export class call relocation test
FAIL: VAX export class data relocation test

	* elf32-vax.c (elf_vax_size_dynamic_sections): Clear linker
	created sections.
2014-06-16 12:28:23 +09:30
Alan Modra
4b1a927e92 Fix uninitialised ARM data
MALLOC_PERTURB_=1 results in "FAIL: PIC" on arm-vxworks, due to garbage
in words with got relocs.

	* config/tc-arm.c (s_arm_elf_cons): Initialise after frag_more.
	(md_apply_fix): Delete now unnecessary zeroing for BFD_RELOC_ARM_GOT*
	and BFD_RELOC_ARM_TLS* relocs.  Simplify BFD_RELOC_8 case.
2014-06-16 12:26:38 +09:30
Alan Modra
44ed9ef26f Fix uninitialised CRIS insn
gas/
	* config/tc-cris.c (md_create_long_jump): Follow "short" jump
	with a nop rather than leaving uninitialised.
gas/testsuite/
	* gas/cris/rd-bkw4v32.d: Update.
2014-06-16 12:23:54 +09:30
Alan Modra
cc0c4d535e daily update 2014-06-16 09:30:38 +09:30