binutils-gdb.git
8 years agoAutomatic date update in version.in
GDB Administrator [Fri, 29 Jan 2016 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoSet BFD_DECOMPRESS to decompress debug sections
H.J. Lu [Thu, 28 Jan 2016 21:29:53 +0000 (13:29 -0800)]
Set BFD_DECOMPRESS to decompress debug sections

We should set BFD_DECOMPRESS to decompress debug sections when reading in
DWARF debug sections.

bfd/

PR binutils/19523
* dwarf2.c (_bfd_dwarf2_slurp_debug_info): Set BFD_DECOMPRESS to
decompress debug sections.

binutils/

PR binutils/19523
* Makefile.am (check-DEJAGNU): Pass CC and CC_FOR_BUILD to
runtest.
* Makefile.in: Regenerated.
* testsuite/binutils-all/compress.exp (test_gnu_debuglink): New
proc.
Run test_gnu_debuglink for native ELF build.

8 years agoAdd ChangeLog entry for update to gdb.dlang demangle tests.
Iain Buclaw [Thu, 28 Jan 2016 20:53:51 +0000 (21:53 +0100)]
Add ChangeLog entry for update to gdb.dlang demangle tests.

8 years agoAlign dlang demangle tests with libiberty.
Iain Buclaw [Thu, 28 Jan 2016 20:47:44 +0000 (21:47 +0100)]
Align dlang demangle tests with libiberty.

gdb/testsuite/ChangeLog:
* gdb.dlang/demangle.exp: Sync tests from libiberty testsuite.

8 years agoSync libiberty with GCC.
Iain Buclaw [Thu, 28 Jan 2016 20:44:42 +0000 (21:44 +0100)]
Sync libiberty with GCC.

libiberty/ChangeLog:
* d-demangle.c (dlang_call_convention): Handle extern Objective-C
function calling convention.
(dlang_call_convention_p): Likewise.
(dlang_type): Likewise.
* testsuite/d-demangle-expected: Add coverage tests.

* d-demangle.c (dlang_function_args): Append ',' for variadic functions
only if parameters were seen before the elipsis symbol.
* testsuite/d-demangle-expected: Add coverage test for parameter-less
variadic functions.

* d-demangle.c (dlang_type): Handle function types only in the context
of seeing a pointer type symbol.
* testsuite/d-demangle-expected: Update function pointer tests.

8 years agoAdd rawmemchr to imported gnulib modules
Simon Marchi [Thu, 28 Jan 2016 18:49:46 +0000 (13:49 -0500)]
Add rawmemchr to imported gnulib modules

rawmemchr is a dependency of strchrnul, so it should be explicitly
listed.

gdb/ChangeLog:

* gnulib/import/Makefile.am: Regenerate.
* gnulib/import/Makefile.in: Regenerate.
* gnulib/import/m4/gnulib-cache.m4: Regenerate.
* gnulib/update-gnulib.sh (IMPORTED_GNULIB_MODULES): Add rawmemchr.

8 years agoImport strchrnul from gnulib and use it
Simon Marchi [Thu, 28 Jan 2016 15:28:56 +0000 (10:28 -0500)]
Import strchrnul from gnulib and use it

For a forthcoming patch, I need a "skip_to_colon" function.  I noticed
there are two skip_to_semicolon (one in gdb and one in gdbserver). I
thought we could put it in common/, and generalize it for any character.
It turns out that the strchrnul function does exactly that.  I imported
the corresponding module from gnulib, for those systems that do not have
it.

There are probably more places where this function can be used instead
of doing the work by hand (I am looking at
remote-utils.c::look_up_one_symbol).

gdb/ChangeLog:

* remote.c (skip_to_semicolon): Remove.
(remote_parse_stop_reply): Use strchrnul instead of
skip_to_semicolon.
* gnulib/update-gnulib.sh (IMPORTED_GNULIB_MODULES): Add
strchrnul.
* gnulib/aclocal.m4: Regenerate.
* gnulib/config.in: Regenerate.
* gnulib/configure: Regenerate.
* gnulib/import/Makefile.am: Regenerate.
* gnulib/import/Makefile.in: Regenerate.
* gnulib/import/m4/gnulib-cache.m4: Regenerate.
* gnulib/import/m4/gnulib-comp.m4: Regenerate.
* gnulib/import/m4/rawmemchr.m4: New file.
* gnulib/import/m4/strchrnul.m4: New file.
* gnulib/import/rawmemchr.c: New file.
* gnulib/import/rawmemchr.valgrind: New file.
* gnulib/import/strchrnul.c: New file.
* gnulib/import/strchrnul.valgrind: New file.

gdb/gdbserver/ChangeLog:

* server.c (skip_to_semicolon):  Remove.
(process_point_options): Use strchrnul instead of
skip_to_semicolon.

8 years ago[testsuite] Fix tiemout fail in gdb.fortran/vla-value.exp
Yao Qi [Thu, 28 Jan 2016 14:27:48 +0000 (14:27 +0000)]
[testsuite] Fix tiemout fail in gdb.fortran/vla-value.exp

In vla.f90, this single line of source is compiled to many instructions,

  vla2(:, :, :) = 1311                ! vla2-allocated

it is quite slow (about several minutes in my testing) to step over this
source line without range stepping.  This patch is to increase the timeout
value by 15 times, which is a magic number to make sure timeout disappears
in my testing with a slow arm-linux board.

gdb/testsuite:

2016-01-28  Yao Qi  <yao.qi@linaro.org>

* gdb.fortran/vla-value.exp: Wrap test with with_timeout_factor.

8 years agoFix GDB crash in dprintf.exp
Yao Qi [Thu, 28 Jan 2016 14:16:42 +0000 (14:16 +0000)]
Fix GDB crash in dprintf.exp

I see GDB crashes in dprintf.exp on aarch64-linux testing,

(gdb) PASS: gdb.base/dprintf.exp: agent: break 29
set dprintf-style agent^M
(gdb) PASS: gdb.base/dprintf.exp: agent: set dprintf style to agent
continue^M
Continuing.
ASAN:SIGSEGV
=================================================================
==22475==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000008 (pc 0x000000494820 sp 0x7fff389b83a0 bp 0x62d000082417 T0)
    #0 0x49481f in remote_add_target_side_commands /home/yao/SourceCode/gnu/gdb/git/gdb/remote.c:9190^M
    #1 0x49e576 in remote_add_target_side_commands /home/yao/SourceCode/gnu/gdb/git/gdb/remote.c:9174^M
    #2 0x49e576 in remote_insert_breakpoint /home/yao/SourceCode/gnu/gdb/git/gdb/remote.c:9240^M
    #3 0x5278b7 in insert_bp_location /home/yao/SourceCode/gnu/gdb/git/gdb/breakpoint.c:2734^M
    #4 0x52ac09 in insert_breakpoint_locations /home/yao/SourceCode/gnu/gdb/git/gdb/breakpoint.c:3159^M
    #5 0x52ac09 in update_global_location_list /home/yao/SourceCode/gnu/gdb/git/gdb/breakpoint.c:12686

the root cause of this problem in this case is about linespec and
symtab which produces additional incorrect location and a NULL is added to
bp_tgt->tcommands.  I posted a patch
https://sourceware.org/ml/gdb-patches/2015-12/msg00321.html to fix it
in linespec (the fix causes regression), but GDB still shouldn't add
NULL into bp_tgt->tcommands.  The logic of build_target_command_list
looks odd to me.  If we get something wrong in parse_cmd_to_aexpr (it
returns NULL), we shouldn't continue, instead we should set flag
null_command_or_parse_error.  This is what this patch does.  In the
meantime, we find build_target_condition_list has the same problem, so
fix it too.

gdb:

2016-01-28  Yao Qi  <yao.qi@linaro.org>

* breakpoint.c (build_target_command_list): Don't call continue
if aexpr is NULL.
(build_target_condition_list): Likewise.

8 years agoAutomatic date update in version.in
GDB Administrator [Thu, 28 Jan 2016 00:00:22 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agorx: Treat scalars larger than 8 bytes as aggregates in rx_push_dummy_call.
Kevin Buettner [Sat, 23 Jan 2016 22:06:08 +0000 (15:06 -0700)]
rx: Treat scalars larger than 8 bytes as aggregates in rx_push_dummy_call.

This patch fixes the following failures (which are also GDB internal errors)
for the -m64bit-doubles multilib:

FAIL: gdb.base/callfuncs.exp: p t_double_complex_values(dc1, dc2) (GDB internal error)
FAIL: gdb.base/callfuncs.exp: p t_double_complex_values(dc3, dc4) (GDB internal error)
FAIL: gdb.base/callfuncs.exp: p t_double_complex_many_args(dc1, dc2, dc3, dc4, dc1, dc2, dc3, dc4, dc1, dc2, dc3, dc4, dc1, dc2, dc3, dc4) (GDB internal error)
FAIL: gdb.base/callfuncs.exp: p t_double_complex_many_args(dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1) (GDB internal error)
FAIL: gdb.base/callfuncs.exp: p t_long_double_complex_values(ldc1, ldc2) (GDB internal error)
FAIL: gdb.base/callfuncs.exp: p t_long_double_complex_values(ldc3, ldc4) (GDB internal error)
FAIL: gdb.base/callfuncs.exp: p t_long_double_complex_many_args(ldc1, ldc2, ldc3, ldc4, ldc1, ldc2, ldc3, ldc4, ldc1, ldc2, ldc3, ldc4, ldc1, ldc2, ldc3, ldc4) (GDB internal error)
FAIL: gdb.base/callfuncs.exp: p t_long_double_complex_many_args(ldc1, ldc1, ldc1, ldc1, ldc1, ldc1, ldc1,ldc1, ldc1, ldc1, ldc1, ldc1, ldc1, ldc1, ldc1, ldc1) (GDB internal error)
FAIL: gdb.base/callfuncs.exp: noproto: p t_double_complex_values(dc1, dc2) (GDB internal error)
FAIL: gdb.base/callfuncs.exp: noproto: p t_double_complex_values(dc3, dc4) (GDB internal error)
FAIL: gdb.base/callfuncs.exp: noproto: p t_double_complex_many_args(dc1, dc2, dc3, dc4, dc1, dc2, dc3, dc4, dc1, dc2, dc3, dc4, dc1, dc2, dc3, dc4) (GDB internal error)
FAIL: gdb.base/callfuncs.exp: noproto: p t_double_complex_many_args(dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1, dc1) (GDB internal error)
FAIL: gdb.base/callfuncs.exp: noproto: p t_long_double_complex_values(ldc1, ldc2) (GDB internal error)
FAIL: gdb.base/callfuncs.exp: noproto: p t_long_double_complex_values(ldc3, ldc4) (GDB internal error)
FAIL: gdb.base/callfuncs.exp: noproto: p t_long_double_complex_many_args(ldc1, ldc2, ldc3, ldc4, ldc1, ldc2, ldc3, ldc4, ldc1, ldc2, ldc3, ldc4, ldc1, ldc2, ldc3, ldc4) (GDB internal error)
FAIL: gdb.base/callfuncs.exp: noproto: p t_long_double_complex_many_args(ldc1, ldc1, ldc1, ldc1, ldc1, ldc1, ldc1,ldc1, ldc1, ldc1, ldc1, ldc1, ldc1, ldc1, ldc1, ldc1) (GDB internal error)
FAIL: gdb.base/varargs.exp: print find_max_double_real(4, dc1, dc2, dc3, dc4) (GDB internal error)
FAIL: gdb.base/varargs.exp: print find_max_long_double_real(4, ldc1, ldc2, ldc3, ldc4) (GDB internal error)

The assertion failure which is tripped is:

  gdb_assert (arg_size <= 4);

While it may seem that the patch ought to disallow scalars larger than
4, scalars of size 8 are explicitly handled by the code elsewhere.

This came up because gcc has a complex type that is 16 bytes in length
when 64-bit doubles are used.

gdb/ChangeLog:

* rx-tdep.c (rx_push_dummy_call): Treat scalars larger than 8
bytes as aggregates.

8 years agoRemove trailing `]' in --enable-compressed-debug-sections
H.J. Lu [Wed, 27 Jan 2016 18:24:51 +0000 (10:24 -0800)]
Remove trailing `]' in --enable-compressed-debug-sections

* configure.ac (compressed_debug_sections): Remove trailing `]'.
* configure: Regenerated.

8 years agoAdd Keith Seitz as Linespec Maintainer
Joel Brobecker [Wed, 27 Jan 2016 09:54:37 +0000 (13:54 +0400)]
Add Keith Seitz as Linespec Maintainer

gdb/ChangeLog:

        * MAINTAINERS (Responsible Maintainers): Add Keith Seitz as
        Linespec Maintainers.

8 years agoAutomatic date update in version.in
GDB Administrator [Wed, 27 Jan 2016 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoFix function comments
Simon Marchi [Tue, 26 Jan 2016 21:30:03 +0000 (16:30 -0500)]
Fix function comments

Two obvious fixes.

gdb/ChangeLog:

* common/common-utils.c (skip_spaces): Fix comment.
(skip_to_space_const): Likewise.

8 years agoFix subject verb agreement in the description of several debug settings.
John Baldwin [Fri, 22 Jan 2016 16:56:18 +0000 (08:56 -0800)]
Fix subject verb agreement in the description of several debug settings.

gdb/doc/ChangeLog:

* gdb.texinfo (Debugging Output): Fix subject verb disagreements.

8 years agoRemove argument pc in get_next_pcs
Yao Qi [Tue, 26 Jan 2016 14:08:26 +0000 (14:08 +0000)]
Remove argument pc in get_next_pcs

Nowadays, get_next_pcs in linux_target_ops has two parameters PC
and REGCACHE.  Parameter PC looks redundant because it can be go
from REGCACHE.  The patch is to remove PC from the arguments for
various functions.

gdb:

2016-01-26  Yao Qi  <yao.qi@linaro.org>

* arch/arm-get-next-pcs.c (thumb_deal_with_atomic_sequence_raw):
Remove argument pc.  Get pc by regcache_read_pc.  Callers updated.
(arm_deal_with_atomic_sequence_raw): Likewise.
(thumb_get_next_pcs_raw): Likewise.
(arm_get_next_pcs_raw): Likewise.
(arm_get_next_pcs): Remove argument pc.  Callers updated.
* arch/arm-get-next-pcs.h (arm_get_next_pcs): Update declaration.

gdb/gdbserver:

2016-01-26  Yao Qi  <yao.qi@linaro.org>

* linux-arm-low.c (arm_gdbserver_get_next_pcs): Remove argument pc.
* linux-low.c (install_software_single_step_breakpoints): Don't
call regcache_read_pc.
* linux-low.h (struct linux_target_ops) <get_next_pcs>: Remove
argument pc.

8 years ago[GDBserver] Use regcache_read_pc in install_software_single_step_breakpoints
Yao Qi [Tue, 26 Jan 2016 14:08:26 +0000 (14:08 +0000)]
[GDBserver] Use regcache_read_pc in install_software_single_step_breakpoints

In install_software_single_step_breakpoints, we've got the regcache
of current_thread, so we don't have to bother get_pc to get pc,
instead we can get pc from regcache directly.  Note that the callers
of install_software_single_step_breakpoints have already switched
current_thread to LWP.

Since the pc is got from regcache_read_pc, in the next patch, we can
get pc inside the implementation of *the_low_target.get_next_pcs and
stop passing pc to *the_low_target.get_next_pcs.

gdb/gdbserver:

2016-01-26  Yao Qi  <yao.qi@linaro.org>

* linux-low.c (install_software_single_step_breakpoints): Call
regcache_read_pc instead of get_pc.

8 years ago[GDBserver] Block and unblock SIGIO
Yao Qi [Tue, 26 Jan 2016 13:50:22 +0000 (13:50 +0000)]
[GDBserver] Block and unblock SIGIO

Nowadays, GDBserver disables async io (by ignoring SIGIO) when process
a serial event, and enables async io (by installing signal handler) when
resume the inferior and wait.  GDBserver may miss SIGIO (by interrupt)
and doesn't process SIGIO in time, which is shown by
gdb.base/interrupt-noterm.exp.  In the test, GDB sends "continue &" and
then "interrupt".  if '\003' arrives at a period between GDBserver
receives vCont;c and enables async io, SIGIO is ignored because signal
handler isn't installed.  GDBserver waits for the inferior and can not
notice '\003' until it returns from wait.

This patch changes the code to install SIGIO handler early, but block
and unblock SIGIO as needed.  In this way, we don't remove SIGIO
handler, so SIGIO can't be ignored.  However, GDBserver needs to
remove the signal handler when connection is closed.

gdb/gdbserver:

2016-01-26  Yao Qi  <yao.qi@linaro.org>

* remote-utils.c (remote_close) [!USE_WIN32API]: Ignore SIGIO.
(unblock_async_io): Rename to ...
(block_unblock_async_io): ... it.  New function.
(enable_async_io): Don't install SIGIO handler.  Unblock it
instead.
(disable_async_io): Don't ignore SIGIO.  Block it instead.
(initialize_async_io): Install SIGIO handler.  Don't call
unblock_async_io.

8 years ago[GDBserver] Check input interrupt after reading in a packet
Yao Qi [Tue, 26 Jan 2016 13:50:22 +0000 (13:50 +0000)]
[GDBserver] Check input interrupt after reading in a packet

GDBserver may read some packet together with '\003' in one go.  We've
already checked '\003' first when reading packet by my patch,

  Check input interrupt first when reading packet
  https://sourceware.org/ml/gdb-patches/2016-01/msg00057.html

but if we don't check '\003' *after* each packet, the interrupt will
be processed next time GDBserver reads from the buffer, so that the
interrupt isn't processed in time.  For example, GDB sends vCont;c and
interrupt (see gdb.base/interrupt-noterm.exp), we'll resume the
inferior and wait once packet vCont;c is seen.  If we don't check the
interrupt character after vCont;c packet, interrupt character will stay
in the buffer unattended until GDBserver returns from the wait, which
may take a while.  Note that since we've read '\003' from file
descriptor, SIGIO signal handler input_interrupt doesn't help either.

This issue can be exposed by hacking the end of getpkt like
@@ -1041,6 +1050,9 @@ getpkt (char *buf)
        }
     }

+  if (readchar_bufcnt > 0)
+    gdb_assert (*readchar_bufp != '\003');
+
   return bp - buf;
 }

and this can trigger internal error,
(gdb) PASS: gdb.base/interrupt-noterm.exp: interrupt
Remote connection closed^M
(gdb) FAIL: gdb.base/interrupt-noterm.exp: inferior received SIGINT
Remote debugging from host 10.2.206.40^M
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/remote-utils.c:1054: A problem internal to GDBserver has been detected.^M
getpkt: Assertion `*readchar_bufp != '\003'' failed.^M

This patch is to peek the buffer, if it is '\003', consume it and call
*the_target->request_interrupt.

gdb/gdbserver:

2016-01-26  Yao Qi  <yao.qi@linaro.org>

* remote-utils.c (getpkt): If the buffer isn't empty, and the
first character is '\003', call *the_target->request_interrupt.

8 years agoSkip thumb2 conditional backward search test for PE based targets.
Nick Clifton [Tue, 26 Jan 2016 09:13:38 +0000 (09:13 +0000)]
Skip thumb2 conditional backward search test for PE based targets.

* testsuite/gas/arm/thumb2_it_search.d: Skip for PE targets.

8 years agoRename OPTION_OMIT_LOCK_PREFIX to OPTION_MOMIT_LOCK_PREFIX
H.J. Lu [Tue, 26 Jan 2016 01:01:11 +0000 (17:01 -0800)]
Rename OPTION_OMIT_LOCK_PREFIX to OPTION_MOMIT_LOCK_PREFIX

Use OPTION_MXXX for -mxxx option in x86 assembler.

* config/tc-i386.c (OPTION_OMIT_LOCK_PREFIX): Renamed to ...
(OPTION_MOMIT_LOCK_PREFIX): This.
(md_longopts): Updated.
(md_parse_option): Likewise.

8 years agoAutomatic date update in version.in
GDB Administrator [Tue, 26 Jan 2016 00:00:18 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoFix GCC6 -Wmisleading-indentation issues.
Mark Wielaard [Mon, 25 Jan 2016 19:29:54 +0000 (20:29 +0100)]
Fix GCC6 -Wmisleading-indentation issues.

GCC6 will warn about misleading indentation issues like:

gdb/ada-lang.c: In function ‘ada_evaluate_subexp’:
ada-lang.c:11423:9: error: statement is indented as if it were guarded by...
         arg1 = unwrap_value (arg1);
         ^~~~

gdb/ada-lang.c:11421:7: note: ...this ‘else’ clause, but it is not
       else
       ^~~~

In this case it would be a bug except for the fact the if clause already
returned early. So this misindented statement really only got executed
for the else case. But it could easily mislead a reader, so adding a
proper else block is the correct solution.

In case of c-typeprint.c (c_type_print_base) the if statement is indeed
misleadingly indented, but not a bug. Just indent correctly. The inflow.c
(terminal_ours_1) misindented block comes from the removal of an if clause
in commit d9d2d8b which looks correct. Just introduce an else to fixup the
indentation of the block. The linux-record.c misleadingly indented return
statements are just that. Misleading to the reader, but not actual bugs.
Just unindent them so they don't look like they fall under the wrong if
clause.

8 years agoAvoid the use of gp-relative addressing when abicalls are in effect.
Catherine Moore [Mon, 25 Jan 2016 20:39:40 +0000 (12:39 -0800)]
Avoid the use of gp-relative addressing when abicalls are in effect.

8 years agoPrevent .noinit section from incorrect placement for AVR.
Denis Chertykov [Mon, 25 Jan 2016 19:33:25 +0000 (22:33 +0300)]
Prevent .noinit section from incorrect placement for AVR.

When .data and .bss sections are empty .noinit section is placed at data
region's start. This will be incorrect for devices that has different
data start address than data region start in linker script.
The patch updates .noinit section's VMA to end of .bss section. So, .noinit
section will be placed at .data section address (-Tdata=<address>) when .data
and .bss sections are empty.

ld/

* scripttempl/avr.sc (.noinit): Force .noinit VMA to end of .bss VMA.
* scripttempl/avrtiny.sc (.noinit): Likewise.

8 years agoRemove new_thread_notify and dead_thread_notify
Yao Qi [Mon, 25 Jan 2016 16:11:43 +0000 (16:11 +0000)]
Remove new_thread_notify and dead_thread_notify

They were added by

  PATCH: Multithreaded debugging for gdbserver
  https://sourceware.org/ml/gdb-patches/2002-06/msg00157.html

but as a no-op, and the last usage of them was removed by

  [gdbserver/RFC/RFA] Implement multiprocess extensions, add linux multiproces support.
  https://sourceware.org/ml/gdb-patches/2009-03/msg00667.html

This patch is to remove them.

gdb/gdbserver:

2016-01-25  Yao Qi  <yao.qi@linaro.org>

* remote-utils.c (new_thread_notify): Remove.
(dead_thread_notify): Likewise.
* remote-utils.h (new_thread_notify): Remove declaration.
(dead_thread_notify): Likewise.

8 years agoARC/BFD: Fix a build error from `index' shadowing a global declaration
Maciej W. Rozycki [Mon, 25 Jan 2016 16:06:46 +0000 (16:06 +0000)]
ARC/BFD: Fix a build error from `index' shadowing a global declaration

bfd/
* elf32-arc.c (elf_arc_finish_dynamic_symbol): Rename `index' to
`dynindx'.

8 years ago[PATCH[ARM]Check mapping symbol while backward searching for IT block.
Renlin Li [Mon, 25 Jan 2016 15:06:54 +0000 (15:06 +0000)]
[PATCH[ARM]Check mapping symbol while backward searching for IT block.

opcodes/

* arm-dis.c (mapping_symbol_for_insn): New function.
(find_ifthen_state): Call mapping_symbol_for_insn().

gas/

* testsuite/gas/arm/thumb2_it_search.d: New.
* testsuite/gas/arm/thumb2_it_search.s: New.

8 years agoFix PR 19461: strange "info thread" behavior in non-stop
Pedro Alves [Mon, 25 Jan 2016 12:00:20 +0000 (12:00 +0000)]
Fix PR 19461: strange "info thread" behavior in non-stop

If you have "set follow-fork child" set, then if you do "info threads"
right after a fork, and before the child reports any other event to
GDB core, you'll see:

(gdb) info threads
  Id   Target Id         Frame
* 1.1  Thread 0x7ffff7fc1740 (LWP 31875) "fork-plus-threa" (running)
  2.1  process 31879 "fork-plus-threa" Selected thread is running.
(gdb)

The "Selected thread is running." bit is a bogus error.  That was GDB
trying to fetch the current frame of thread 2.1, because the external
runnning state is "stopped", and then throwing an error because the
thread is actually running.

This actually affects all-stop + schedule-multiple as well.

The problem here is that on a fork event, GDB doesn't update the
external parent/child running states.

New comprehensive test included.  The "kill inferior 1" / "kill
inferior 2" bits also trip on PR gdb/19494 (hang killing unfollowed
fork children), which was fixed by the previous patch.

gdb/ChangeLog:
2016-01-25  Pedro Alves  <palves@redhat.com>

PR threads/19461
* infrun.c (handle_inferior_event_1) <fork/vfork>: Update
parent/child running states.

gdb/testsuite/ChangeLog:
2016-01-25  Pedro Alves  <palves@redhat.com>

PR threads/19461
* gdb.base/fork-running-state.c: New file.
* gdb.base/fork-running-state.exp: New file.

8 years agoFix PR 19494: hang when killing unfollowed fork children
Pedro Alves [Mon, 25 Jan 2016 12:00:20 +0000 (12:00 +0000)]
Fix PR 19494: hang when killing unfollowed fork children

linux_nat_kill relies on get_last_target_status to determine whether
the current inferior is stopped at a unfollowed fork/vfork event.
This is bad because many things can happen ever since we caught the
fork/vfork event...  This commit rewrites that code to instead walk
the thread list looking for unfollowed fork events, similarly to what
was done for remote.c.

New test included.  The main idea of the test is make sure that when
the program stops for a fork catchpoint, and the user kills the
parent, gdb also kills the unfollowed fork child.  Since the child
hasn't been added as an inferior at that point, we need some other
portable way to detect that the child is gone.  The test uses a pipe
for that.  The program forks twice, so you have grandparent, child and
grandchild.  The grandchild inherits the write side of the pipe.  The
grandparent hangs reading from the pipe, since nothing ever writes to
it.  If, when GDB kills the child, it also kills the grandchild, then
the grandparent's pipe read returns 0/EOF and the test passes.
Otherwise, if GDB doesn't kill the grandchild, then the pipe read
never returns and the test times out, like:

 FAIL: gdb.base/catch-fork-kill.exp: fork-kind=fork: exit-kind=kill: fork: kill parent (timeout)
 FAIL: gdb.base/catch-fork-kill.exp: fork-kind=vfork: exit-kind=kill: vfork: kill parent (timeout)

No regressions on x86_64 Fedora 20.  New test passes with gdbserver as
well.

gdb/ChangeLog:
2016-01-25  Pedro Alves  <palves@redhat.com>

PR gdb/19494
* linux-nat.c (kill_one_lwp): New, factored out from ...
(kill_callback): ... this.
(kill_wait_callback): New, factored out from ...
(kill_wait_one_lwp): ... this.
(kill_unfollowed_fork_children): New function.
(linux_nat_kill): Use it.

gdb/testsuite/ChangeLog:
2016-01-25  Pedro Alves  <palves@redhat.com>

PR gdb/19494
* gdb.base/catch-fork-kill.c: New file.
* gdb.base/catch-fork-kill.exp: New file.

8 years agoMove foreach_with_prefix to lib/gdb.exp
Pedro Alves [Mon, 25 Jan 2016 12:00:18 +0000 (12:00 +0000)]
Move foreach_with_prefix to lib/gdb.exp

gdb/testsuite/ChangeLog:
2016-01-25  Pedro Alves  <palves@redhat.com>

* gdb.base/step-sw-breakpoint-adjust-pc.exp (foreach_with_prefix):
Delete, moved to lib/gdb.exp.
* gdb.threads/forking-threads-plus-breakpoint.exp
(foreach_with_prefix): Likewise.
* gdb.threads/process-dies-while-handling-bp.exp
(foreach_with_prefix): Likewise.
* lib/gdb.exp (foreach_with_prefix): New procedure.

8 years agoDelete ChangeLog entry from the wrong place
Pedro Alves [Mon, 25 Jan 2016 12:54:48 +0000 (12:54 +0000)]
Delete ChangeLog entry from the wrong place

Missed actually removing this in 37e42b4fe92c...

8 years agogdb.trace/testsuite: Bump stack collection fudge factor.
Marcin Kościelnicki [Sat, 23 Jan 2016 14:42:11 +0000 (15:42 +0100)]
gdb.trace/testsuite: Bump stack collection fudge factor.

These two tests collect 64 words from $sp onwards, hoping that's enough
to capture a few whole stack frames.  Unfortunately, that's not enough
for s390, which tends to have large frame sizes - minimum 24 words on
s390, 20 on s390x (which just barely passes).  Bump it to 128 words,
let's hope no machine needs more.

Tested on x86_64, s390, s390x.

gdb/testsuite/ChangeLog:

* gdb.trace/backtrace.exp: Bump stack collection fudge factor.
* gdb.trace/entry-values.exp: Bump stack collection fudge factor.

8 years agoAdd missing end-of-comment marker to previous delta. (Doh!)
Nick Clifton [Mon, 25 Jan 2016 09:44:18 +0000 (09:44 +0000)]
Add missing end-of-comment marker to previous delta.  (Doh!)

8 years agoFix memory corruption on Mach-O systems by suppressing a memory tidy up.
Nick Clifton [Mon, 25 Jan 2016 09:35:33 +0000 (09:35 +0000)]
Fix memory corruption on Mach-O systems by suppressing a memory tidy up.

PR target/19435
* mach-o.c (bfd_mach_o_close_and_cleanup): Suppress code to free
dsym filename buffer.

8 years agoAutomatic date update in version.in
GDB Administrator [Mon, 25 Jan 2016 00:00:18 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoMIPS/BFD: Simplify register index calculation in BZ16_REG_FIELD
Maciej W. Rozycki [Sun, 24 Jan 2016 00:55:13 +0000 (00:55 +0000)]
MIPS/BFD: Simplify register index calculation in BZ16_REG_FIELD

Just mask higher bits off, which returns the same set of 3-bit register
encodings of { 0, 1, 2, 3, 4, 5, 6, 7 } for the allowed 5-bit encodings
of { 16, 17, 2, 3, 4, 5, 6, 7 }.  Input has already been validated with
OP16_VALID_REG.

bfd/
* elfxx-mips.c (BZ16_REG_FIELD): Simplify calculation.

8 years agoMIPS/BFD: Correct register index calculation in BZ16_REG
Maciej W. Rozycki [Sun, 24 Jan 2016 00:49:26 +0000 (00:49 +0000)]
MIPS/BFD: Correct register index calculation in BZ16_REG

For the 3-bit register encodings of { 0, 1, 2, 3, 4, 5, 6, 7 } return
the 5-bit encodings of { 16, 17, 2, 3, 4, 5, 6, 7 } respectively rather
than { 24, 25, 2, 3, 4, 5, 6, 7 }.

bfd/
* elfxx-mips.c (BZ16_REG): Correct calculation.

8 years agoAutomatic date update in version.in
GDB Administrator [Sun, 24 Jan 2016 00:00:10 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agogdb.trace: Fix unavailable-dwarf-piece.exp on big endian targets
Marcin Kościelnicki [Sat, 23 Jan 2016 12:17:34 +0000 (13:17 +0100)]
gdb.trace: Fix unavailable-dwarf-piece.exp on big endian targets

The test constructs fake DWARF info for a C structure involving bitfields.
DWARF bitfields are always counted from LSB, while the order in which
bitfields are allocated in a C struct depends on the target endianness -
thus the generated DWARF marks different bitfields as unavailable when
target is big endian.  Accordingly, we need different expected outputs.

Tested on s390 and s390x, no regression on x86_64.

gdb/testsuite/ChangeLog:

* gdb.trace/unavailable-dwarf-piece.exp: Fix bitfield handling on big
endian targets.

8 years agogdb.trace: Fix another expected message on continue.
Marcin Kościelnicki [Sat, 23 Jan 2016 11:06:08 +0000 (12:06 +0100)]
gdb.trace: Fix another expected message on continue.

Missed one message in bd0a71fa16f668341a9361c695bc3ca44d27b322, since it
didn't trigger on s390x or amd64 (fast tracepoint out of range due to
shared library usage), noticed on s390.

Pushed as obvious.

gdb/testsuite/ChangeLog:

* gdb.trace/pending.exp: Fix expected message on continue.

8 years agoAutomatic date update in version.in
GDB Administrator [Sat, 23 Jan 2016 00:00:10 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agotestsuite: gdb.gdb/selftest.exp: Drop expected Thread number
Jan Kratochvil [Fri, 22 Jan 2016 20:49:38 +0000 (21:49 +0100)]
testsuite: gdb.gdb/selftest.exp: Drop expected Thread number

Pedro Alves:
Looks like you forgot to amend before pushing though -- the version
checked in still had "Thread 1".

gdb/testsuite/ChangeLog
2016-01-22  Jan Kratochvil  <jan.kratochvil@redhat.com>
    Pedro Alves  <palves@redhat.com>

Fix testsuite compatibility with Guile.
* gdb.gdb/selftest.exp (send ^C to child process): Drop expected Thread
number.

8 years agotestsuite: Fix PR threads/19422 regression + Guile regression
Jan Kratochvil [Fri, 22 Jan 2016 20:21:45 +0000 (21:21 +0100)]
testsuite: Fix PR threads/19422 regression + Guile regression

The PR threads/19422 patchset added a new regression.

Additionally below it there was already a regression if --with-guile (which is
default if Guile is found) was used.

racy case #1:

(xgdb) PASS: gdb.gdb/selftest.exp: Set xgdb_prompt
^M
Thread 1 "xgdb" received signal SIGINT, Interrupt.^M
0x00007ffff583bfdd in poll () from /lib64/libc.so.6^M
(gdb) FAIL: gdb.gdb/selftest.exp: send ^C to child process
signal SIGINT^M
Continuing with signal SIGINT.^M
^C^M
Thread 1 "xgdb" received signal SIGINT, Interrupt.^M
0x00007ffff5779da0 in sigprocmask () from /lib64/libc.so.6^M
(gdb) PASS: gdb.gdb/selftest.exp: send SIGINT signal to child process
backtrace^M
errstring=errstring@entry=0x7e0e6c "", mask=mask@entry=RETURN_MASK_ALL) at exceptions.c:240^M
errstring=errstring@entry=0x7e0e6c "", mask=mask@entry=RETURN_MASK_ALL) at exceptions.c:240^M
(gdb) PASS: gdb.gdb/selftest.exp: backtrace through signal handler

racy case #2:

(xgdb) PASS: gdb.gdb/selftest.exp: Set xgdb_prompt
^M
Thread 1 "xgdb" received signal SIGINT, Interrupt.^M
0x00007ffff583bfdd in poll () from /lib64/libc.so.6^M
(gdb) FAIL: gdb.gdb/selftest.exp: send ^C to child process
signal SIGINT^M
Continuing with signal SIGINT.^M
^C^M
Thread 2 "xgdb" received signal SIGINT, Interrupt.^M
[Switching to Thread 0x7ffff3b7f700 (LWP 13227)]^M
0x00007ffff6b88b10 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0^M
(gdb) PASS: gdb.gdb/selftest.exp: send SIGINT signal to child process
backtrace^M
(gdb) FAIL: gdb.gdb/selftest.exp: backtrace through signal handler

Pedro Alves:
Not all targets support thread names, and even those that do, not all
use the program name as default thread name -- I think that's only true
for GNU/Linux, actually.  So I think it's best to not expect that, like:
            -re "(Thread .*|Program) received signal SIGINT.*$gdb_prompt $" {

gdb/testsuite/ChangeLog
2016-01-22  Jan Kratochvil  <jan.kratochvil@redhat.com>

Fix testsuite compatibility with Guile.
* gdb.gdb/selftest.exp (send ^C to child process): Accept also Thread.
(thread 1): New test for backtrace through signal handler.

8 years agoReword the string description of native FreeBSD ptids.
John Baldwin [Thu, 21 Jan 2016 17:51:35 +0000 (09:51 -0800)]
Reword the string description of native FreeBSD ptids.

The prior format led to confusing messages when threads were created
or added such as "[New process 14757, LWP 100537]".  The new format
reports this as "[New LWP 100434 of process 15652]".

gdb/ChangeLog:

* fbsd-nat.c (fbsd_pid_to_str): Adjust string format.

8 years agogdb.trace: Fix write_inferior_data_ptr on 32-bit big-endian machines.
Marcin Kościelnicki [Fri, 22 Jan 2016 13:25:02 +0000 (14:25 +0100)]
gdb.trace: Fix write_inferior_data_ptr on 32-bit big-endian machines.

Noticed and tested on 31-bit s390.  This bug caused completely broken
fast tracepoints.

gdb/gdbserver/ChangeLog:

* tracepoint.c (write_inferior_data_ptr): Cast to uintptr_t, so that
it works properly on big-endian machines where sizeof (CORE_ADDR)
!= sizeof (void *).

8 years ago[testsuite] Unbuffer the output in gdb.base/multi-forks.c
Yao Qi [Thu, 21 Jan 2016 17:28:06 +0000 (17:28 +0000)]
[testsuite] Unbuffer the output in gdb.base/multi-forks.c

This patch unbuffer the output of the program so that the test harness
can count the number of "done" from output correctly.

gdb/testsuite:

2016-01-22  Yao Qi  <yao.qi@linaro.org>

PR testsuite/19491
* gdb.base/multi-forks.c: Include
../lib/unbuffer_output.c
(main): Call gdb_unbuffer_output.

8 years ago[ARM] perror_with_name when failed to fetch/store registers
Yao Qi [Fri, 22 Jan 2016 09:01:09 +0000 (09:01 +0000)]
[ARM] perror_with_name when failed to fetch/store registers

I see the following test fail on native arm-linux gdb testing...

(gdb) PASS: gdb.base/killed-outside.exp: registers: get pid of inferior
Executing on target: kill -9 2346    (timeout = 300)
spawn kill -9 2346^M
flushregs^M
Register cache flushed.^M
warning: Unable to fetch general registers.^M
PC not available^M
(gdb) PASS: gdb.base/killed-outside.exp: registers: flushregs
info threads^M
  Id   Target Id         Frame ^M
* 1    process 2346 "killed-outside" (gdb) FAIL: gdb.base/killed-outside.exp: registers: info threads (timeout)

since the inferior disappeared, ptrace will fail.  In that case, the
exception should be thrown, so that the caller can handle that.

gdb:

2016-01-22  Yao Qi  <yao.qi@linaro.org>

* arm-linux-nat.c (fetch_fpregs): Call perror_with_name
instead of warning.
(store_fpregs, fetch_regs, store_regs): Likewise.
(fetch_wmmx_regs, store_wmmx_regs): Likewise.
(fetch_vfp_regs, store_vfp_regs): Likewise.

8 years ago* breakpoint.c (init_breakpoint_sal): Add comment.
Doug Evans [Fri, 22 Jan 2016 01:02:39 +0000 (17:02 -0800)]
* breakpoint.c (init_breakpoint_sal): Add comment.

8 years ago* lib/ada.exp (gdb_compile_ada): Fix typo.
Doug Evans [Fri, 22 Jan 2016 00:20:02 +0000 (16:20 -0800)]
* lib/ada.exp (gdb_compile_ada): Fix typo.

8 years agoAutomatic date update in version.in
GDB Administrator [Fri, 22 Jan 2016 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agogdb.trace: Fix string collection for 64-bit platforms.
Marcin Kościelnicki [Thu, 21 Jan 2016 15:58:12 +0000 (16:58 +0100)]
gdb.trace: Fix string collection for 64-bit platforms.

String collection always used ref32 to fetch the string pointer.  Make it
use gen_fetch instead.

As a side effect, this patch changes dup+const+trace+pop sequence used
for collecting the string's address to a trace_quick opcode.  This
results in a shorter agent expression.

This appeared to work on x86_64 since it's a little-endian platform, and
malloc (used in gdb.trace/collection.exp) returns addresses in low 4GB.
Noticed and tested on s390x-ibm-linux-gnu, also tested on
i686-unknown-linux-gnu and x86_64-unknown-linux-gnu.

gdb/ChangeLog:

* ax-gdb.c (gen_traced_pop): Use gen_fetch for string collection.

8 years agoFix linker testsuite failures for ARM netbsdelf target.
Nick Clifton [Thu, 21 Jan 2016 15:20:57 +0000 (15:20 +0000)]
Fix linker testsuite failures for ARM netbsdelf target.

PR ld/19453
* testsuite/ld-arm/arm-elf.exp: Skip tests that do not work for
the arm-netbsdelf target.

8 years agoFix gas testsuite failures for ARM netbesdelf configuration.
Nick Clifton [Thu, 21 Jan 2016 14:39:34 +0000 (14:39 +0000)]
Fix gas testsuite failures for ARM netbesdelf configuration.

PR gas/19454
* testsuite/gas/arm/mapshort-elf.d: Fix expected output to cope
with arm-netbsdelf target.
* testsuite/gas/arm/blx-bl-convert.d: Skip for netbsdelf.

8 years agoFix compile time errors building ARC target on a 32-bit host.
Nick Clifton [Thu, 21 Jan 2016 13:54:11 +0000 (13:54 +0000)]
Fix compile time errors building ARC target on a 32-bit host.

* elf32-arc.c (ADD_RELA): Fix compile time warning errors by
changing the type of _loc to be bfd_byte *.
(elf_arc_finish_dynamic_symbol): Likewise.

8 years agogdb: Small cleanup to disasm.c:maybe_add_dis_line_entry
Andrew Burgess [Thu, 21 Jan 2016 11:56:25 +0000 (12:56 +0100)]
gdb: Small cleanup to disasm.c:maybe_add_dis_line_entry

Give the function a better name (drop "maybe_") and update the header
comment.

gdb/ChangeLog:

* disasm.c (maybe_add_dis_line_entry): Rename to...
(add_dis_line_entry): ...this, and update header comment.
(do_mixed_source_and_assembly): Now use add_dis_line_entry.

8 years agogdb: Respect CXXFLAGS when building with C++ compiler
Pedro Alves [Thu, 21 Jan 2016 11:18:45 +0000 (11:18 +0000)]
gdb: Respect CXXFLAGS when building with C++ compiler

Currently, even when built with --enable-build-with-cxx, gdb uses
CFLAGS instead of CXXFLAGS.  This commit fixes it.

CXXFLAGS set in the environment when configure was run is now honored
in the generated gdb/Makefile, and you can also override CXXFLAGS in
the command like at make time, with the usual 'make CXXFLAGS="..."'

Objects built with a C compiler (e.g., gnulib) still honor CFLAGS
instead.

gdb/ChangeLog:
2016-01-21  Pedro Alves  <palves@redhat.com>

* Makefile.in (COMPILER_CFLAGS): New.
(CXXFLAGS): Get it from configure.
(INTERNAL_CFLAGS_BASE, INTERNAL_LDFLAGS): Use COMPILER_CFLAGS
instead of CFLAGS.
* build-with-cxx.m4 (GDB_AC_BUILD_WITH_CXX): Set and AC_SUBST
COMPILER_CFLAGS.
* configure: Regenerate.

gdb/gdbserver/ChangeLog:
2016-01-21  Pedro Alves  <palves@redhat.com>

* Makefile.in (COMPILER_CFLAGS, CXXFLAGS): New.
(INTERNAL_CFLAGS_BASE): Use COMPILER_CFLAGS instead of CFLAGS.
* configure: Regenerate.

8 years agoFix unexpected failures in the linker testsuite for ARM VxWorks targets.
Nick Clifton [Thu, 21 Jan 2016 10:51:25 +0000 (10:51 +0000)]
Fix unexpected failures in the linker testsuite for ARM VxWorks targets.

PR ld/19455
* elf32-arm.c (elf32_arm_create_dynamic_sections): Set the ELF
class of the linker stub bfd.
(elf32_arm_check_relocs): Skip check for pic format after
processing a vxWorks R_ARM_ABS12 reloc.
* elflink.c (bfd_elf_final_link): Check for ELFCLASSNONE when
reporting a class mismatch.

* testsuite/ld-arm/vxworks1-lib.dd: Update for current
disassmebler output.
* testsuite/ld-arm/vxworks1-lib.rd: Likewise.
* testsuite/ld-arm/vxworks1.dd: Likewise.
* testsuite/ld-arm/vxworks1.rd: Likewise.
* testsuite/ld-arm/vxworks1.ld: Set the output format.

8 years agoFix regression introduced in "break *<EXPR>" by explicit location patches.
Joel Brobecker [Tue, 8 Dec 2015 18:04:56 +0000 (19:04 +0100)]
Fix regression introduced in "break *<EXPR>" by explicit location patches.

A relatively recent patch support for explicit locations, and part
of that patch cleaned up the way we parse breakpoint locations.
Unfortunatly, a small regression crept in for "*<EXPR>" breakpoint
locations. In particular, on PIE programs, one can see the issue by
doing the following, with any program:

    (gdb) b *main
    Breakpoint 1 at 0x51a: file hello.c, line 3.
    (gdb) run
    Starting program: /[...]/hello
    Error in re-setting breakpoint 1: Warning:
    Cannot insert breakpoint 1.
    Cannot access memory at address 0x51a

    Warning:
    Cannot insert breakpoint 1.
    Cannot access memory at address 0x51a

Just for the record, this regression was introduced by:

    commit a06efdd6effd149a1d392df8d62824e44872003a
    Date:   Tue Aug 11 17:09:35 2015 -0700
    Subject: Explicit locations: introduce address locations

What happens is that the patch makes the implicit assumption that
the address computed the first time is static, as if it was designed
to only support litteral expressions (Eg. "*0x1234"). This allows
the shortcut of not re-computing the breakpoint location's address
when re-setting breakpoints.

However, this does not work in general, as demonstrated in the example
above.

This patch plugs that hole simply by saving the original expression
used to compute the address as part of the address location, so as
to then re-evaluate that expression during breakpoint re-set.

gdb/ChangeLog:

        * location.h (new_address_location): Add new parameters
        "addr_string" and "addr_string_len".
        (get_address_string_location): Add declaration.
        * location.c (new_address_location): Add new parameters
        "addr_string" and "addr_string_len".  If not NULL, store
        a copy of the addr_string in the new location as well.
        (get_address_string_location): New function.
        (string_to_event_location): Update call to new_address_location.
        * linespec.c (event_location_to_sals) <ADDRESS_LOCATION>:
        Save the event location in the parser's state before
        passing it to convert_address_location_to_sals.
        * breakpoint.c (create_thread_event_breakpoint): Update call
        to new_address_location.
        (init_breakpoint_sal): Get the event location's string, if any,
        and use it to update call to new_address_location.
        * python/py-finishbreakpoint.c (bpfinishpy_init):
        Update call to new_address_location.
        * spu-tdep.c (spu_catch_start): Likewise.

        * config/djgpp/fnchange.lst: Add entries for
        gdb/testsuite/gdb.base/break-fun-addr1.c and
        gdb/testsuite/gdb.base/break-fun-addr2.c.

gdb/testsuite/ChangeLog:

        * gdb.base/break-fun-addr.exp: New file.
        * gdb.base/break-fun-addr1.c: New file.
        * gdb.base/break-fun-addr2.c: New file.

8 years ago[AArch64] Relax long branch veneer insertion for non STT_FUNC symbol
Jiong Wang [Wed, 20 Jan 2016 16:57:59 +0000 (16:57 +0000)]
[AArch64] Relax long branch veneer insertion for non STT_FUNC symbol

  As defined at AArch64 ELF Specification (4.6.7 Call and Jump
  relocations), symbol with type of non STT_FUNC but in different input
  section with relocation place should insert long branch veneer also.

  Meanwhile the current long branch veneer infrastructure havn't considered
  the situation where the branch destination is "sym_value + rela->addend".

  This was OK because we only insert veneer for long call destination is
  STT_FUNC symbol for which the addend is always zero. But as we relax the
  support to other situations by this patch, we need to handle addend be
  non-zero value. For example, for static function, relocation against
  "local symbol" are turned into relocation against "section symbol + offset"
  where there is a valid addend.

  bfd/
* elfnn-aarch64.c (aarch64_type_of_stub): Allow insert long branch
veneer for sym_sec != input_sec.
(elfNN_aarch64_size_stub): Support STT_SECTION symbol.
(elfNN_aarch64_final_link_relocate): Take rela addend into account when
calculation destination.

  ld/
* testsuite/ld-aarch64/farcall-section.d: Delete.
* testsuite/ld-aarch64/farcall-section.s: Delete.
* testsuite/ld-aarch64/farcall-b-section.d: New expectation file.
* testsuite/ld-aarch64/farcall-bl-section.d: Likewise.
* testsuite/ld-aarch64/farcall-b-section.s: New testcase.
* testsuite/ld-aarch64/farcall-bl-section.s: Likewise.
* testsuite/ld-aarch64/aarch64-elf.exp: Likewise.

8 years agoConvert macros in elf-linux-core.h to inline functions
Alan Modra [Thu, 21 Jan 2016 03:03:53 +0000 (13:33 +1030)]
Convert macros in elf-linux-core.h to inline functions

Besides changing some macros into inline functions, this removes
redundant memsets and uses bfd_put_* rather than H_PUT_*.

* elf-linux-core.h (swap_linux_prpsinfo32_out): New function.
(swap_linux_prpsinfo64_out): New function.
(LINUX_PRPSINFO32_SWAP_FIELDS): Delete.
(LINUX_PRPSINFO64_SWAP_FIELDS): Delete.
* elf.c (elfcore_write_linux_prpsinfo32): Adjust.  Don't memset.
(elfcore_write_linux_prpsinfo64): Likewise.
* elf32-ppc.c (swap_ppc_linux_prpsinfo32_out): New function.
(PPC_LINUX_PRPSINFO32_SWAP_FIELDS): Delete.
(elfcore_write_ppc_linux_prpsinfo32): Adjust.  Don't memset.

8 years agoRename elf-linux-psinfo.h to elf-linux-core.h
Alan Modra [Thu, 21 Jan 2016 02:45:02 +0000 (13:15 +1030)]
Rename elf-linux-psinfo.h to elf-linux-core.h

Since it will sometime have more than just prpsinfo.  Also,
elf32-ppc.c needlessly includes this header.

* elf-linux-core.h: Rename from elf-linux-psinfo.h.
* elf.c: Adjust #include.
* elf32-ppc.c: Don't #include elf-linux-psinfo.h
* Makefile.am (SOURCE_HFILES): Update.
* Makefile.in: Regenerate.
* po/SRC-PORFILES.in: Regenerate.

8 years agobfd/configure reorganisation
Alan Modra [Tue, 19 Jan 2016 01:54:09 +0000 (12:24 +1030)]
bfd/configure reorganisation

Corefile code should be moved after running config.bfd, because it
uses want64.

* configure.ac: Move corefile selection later in file.  Move
tdefaults code immediately after other target vector code.
* configure: Regenerate.

8 years agoDetect the arm/thumb mode of code SIGRETURN or RT_SIGRETURN returns to
Yao Qi [Thu, 21 Jan 2016 07:48:50 +0000 (07:48 +0000)]
Detect the arm/thumb mode of code SIGRETURN or RT_SIGRETURN returns to

This patch fixes the following regression introduced by commit d0e59a68

step^M
39      } /* handler */^M
1: x/i $pc^M
=> 0x8740 <handler+80>: sub     sp, r11, #0^M
(gdb) step^M
^M
Program received signal SIGSEGV, Segmentation fault.^M
setitimer () at ../sysdeps/unix/syscall-template.S:81^M
81      ../sysdeps/unix/syscall-template.S: No such file or directory.^M
1: x/i $pc^M
=> 0xb6eff9c0 <setitimer>:      push    {r7}^M
(gdb) FAIL: gdb.base/sigstep.exp: continue to handler, si+advance in handler, step from handler: leave handler

in my test setting, program is compiled in arm mode, but the glibc
is built in thumb mode, so when we do 'step' to step over syscall
instruction svc for SIGRETURN, GDB should set breakpoint for arm mode
in the program, even though the current program in glibc is in thumb
mode.  Current GDB doesn't consider the case that the mode of program
SIGRETURN goes to can be different from current program mode.

In fact, GDB has taken care of this arm/thumb mode changes already,
see

/* Copy the value of next pc of sigreturn and rt_sigrturn into PC,
   return 1.  In addition, set IS_THUMB depending on whether we
   will return to ARM or Thumb code.  Return 0 if it is not a
   rt_sigreturn/sigreturn syscall.  */
static int
arm_linux_sigreturn_return_addr (struct frame_info *frame,
 unsigned long svc_number,
 CORE_ADDR *pc, int *is_thumb)

but in the commit d0e59a68

> -  arm_linux_sigreturn_return_addr (frame, svc_number, &return_addr, &is_thumb);
> +  if (svc_number == ARM_SIGRETURN || svc_number == ARM_RT_SIGRETURN)
> +    next_pc = arm_linux_sigreturn_next_pc (regcache, svc_number);

the IS_THUMB setting is lost, so it is a regression.

gdb:

2016-01-21  Yao Qi  <yao.qi@linaro.org>

* arm-linux-tdep.c (arm_linux_sigreturn_next_pc): Add parameter
is_thumb and set it according to CPSR saved on the stack.
(arm_linux_get_next_pcs_syscall_next_pc): Pass is_thumb to
arm_linux_sigreturn_next_pc.

gdb/gdbserver:

2016-01-21  Yao Qi  <yao.qi@linaro.org>

* linux-arm-low.c (arm_sigreturn_next_pc): Add parameter
is_thumb and set it according to CPSR saved on the stack.
(get_next_pcs_syscall_next_pc): Pass is_thumb to
arm_sigreturn_next_pc.

8 years agoAutomatic date update in version.in
GDB Administrator [Thu, 21 Jan 2016 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoFix sorting of enum values in FlagEnumerationPrinter
Simon Marchi [Wed, 20 Jan 2016 18:42:53 +0000 (13:42 -0500)]
Fix sorting of enum values in FlagEnumerationPrinter

The lambda function used to sort the enumerator list does not work
properly.  This list consists of tuples, (enum label, enum value).  The
key function returns x.enumval.  enumval not being defined for a tuple,
we see this exception in the test log:

  Python Exception <class 'AttributeError'> 'tuple' object has no attribute 'enumval'

The function should return the second item of the tuple, which is the
enumval.

The pretty-printer still worked mostly correctly, except that the
enumeration values were not sorted.  The test still passed because the
enumeration values are already sorted where they are defined.  The test
also passed despite the exception being printed, because the right output
was printed after the exception:

  print (enum flag_enum) (FLAG_1)
  Python Exception <type 'exceptions.AttributeError'> 'tuple' objecthas no attribute 'enumval':M
  $7 = 0x1 [FLAG_1]
  (gdb) PASS: gdb.python/py-pp-maint.exp: print FLAG_1

New in v2:

- Improved test case, I stole Pedro's example directly.  It verifies
  that the sorting of enumerators by value works, by checking that
  printing FOO_MASK appears as FOO_1 | FOO_2 | FOO_3.

  I noticed that I could change the regexps to almost anything and the
  tests would still pass.  I think it was because of the | in there.  I
  made them more robust by using string_to_regexp.  I used curly braces
  { } instead of quoting marks " " for strings, so that I could use
  square brackets [ ] in them without having to escape them all.  I also
  removed the "message" part of the tests, since they are redundant with
  the command, and it's just more maintenance to have to update them.

  Tested with Python 2.7 and 3.5.

gdb/ChangeLog:

* python/lib/gdb/printing.py (FlagEnumerationPrinter.__call__):
Fix enumerators sort key function.

gdb/testsuite/ChangeLog:

* gdb.python/py-pp-maint.exp: Change/add enum flag tests.
* gdb.python/py-pp-maint.c (enum flag_enum): Use more complex
enum flag values.

8 years agognu_vector.exp: Respect `should_kfail' for PR 8549
Andreas Arnez [Wed, 20 Jan 2016 18:41:45 +0000 (19:41 +0100)]
gnu_vector.exp: Respect `should_kfail' for PR 8549

The gnu_vector test case yields a new FAIL on s390x:

  FAIL: gdb.base/gnu_vector.exp: verify vector return value

It was introduced by commit 77ae9c1933b50 "gdb.base/gnu_vector.exp:
Don't test output from the inferior".  That commit dropped the special
handling for GDB's inability (on some targets) to set the return value.

This change re-establishes the logic from before, converting the above
FAIL to a KFAIL (PRMS gdb/8549).

gdb/testsuite/ChangeLog:

* gdb.base/gnu_vector.exp: Re-establish handling for should_kfail
when GDB can not set the vector return value.  Add more comments
for clarification.

8 years agoFix missing IPA lib in tspeed.exp in some configurations.
Antoine Tremblay [Wed, 20 Jan 2016 17:30:53 +0000 (12:30 -0500)]
Fix missing IPA lib in tspeed.exp in some configurations.

On Ubuntu 14.04 the following failure would be seen when running the
tspeed.exp test on a target that supports fast tracepoints like x86_64:

Target returns error code '.In-process agent library not loaded in
process.  Fast and static tracepoints unavailable.'.
(gdb) FAIL: gdb.trace/tspeed.exp: start trace experiment

This is because the default is to link with --as-needed and the
gdb_compile for the test is using the libs argument instead of shlib which
corrects this issue since 6ebea266fd0a7a56c90db3ab6237ff9f6c919747 by
adding -Wl,--no-as-needed.

This patch fixes the issue by passing the lib as the shlib argument to
gdb_compile.

Tested on Ubuntu 14.04 x86_64.

gdb/testsuite/ChangeLog:

* gdb.trace/tspeed.exp:  Use shlib instead of libs in gdb_compile
command.

8 years agoFix unexpected failures in GAS testsuite for ARM VxWorks target.
Nick Clifton [Wed, 20 Jan 2016 17:02:42 +0000 (17:02 +0000)]
Fix unexpected failures in GAS testsuite for ARM VxWorks target.

PR 19456
* testsuite/gas/arm/weakdef-1.d: Skip for VxWorks.
* testsuite/gas/arm/blx-bl-convert.d
* testsuite/gas/arm/plt-1.d: Likewise.
* testsuite/gas/arm/reloc-bad.d: Likewise.
* testsuite/gas/arm/thumb-w-good.d: Likewise.
* testsuite/gas/arm/thumb2_pool.d: Likewise.
* testsuite/gas/arm/ldconst.d: Adjust so that it works with VxWorks
* testsuite/gas/arm/tls_vxworks.d: Update expected output.

8 years agoUpda the documentation on assembler error message generation.
Nick Clifton [Wed, 20 Jan 2016 16:21:34 +0000 (16:21 +0000)]
Upda the documentation on assembler error message generation.

PR 19499
* doc/as.texinfo (Errors): Correct documentation describing the
interaction of .file and .line with warning and error messages.

8 years agoFix linker testsuite failures for arm-pe targets.
Nick Clifton [Wed, 20 Jan 2016 15:41:06 +0000 (15:41 +0000)]
Fix linker testsuite failures for arm-pe targets.

PR 19457
* testsuite/ld-scripts/script.exp (extract_symbol_test): Stop test
early for PE based targets.
* testsuite/ld-scripts/align.t: Use 0x1000 as VMA alignment.
* testsuite/ld-pe/tlssec32.d: Allow for relocatable output.

8 years agoSkip ARM v8 tests for COFF based targets.
Nick Clifton [Wed, 20 Jan 2016 15:00:57 +0000 (15:00 +0000)]
Skip ARM v8 tests for COFF based targets.

8 years agoFix dlltool tests for ARM targets, which do not support the --leading-underscore...
Nick Clifton [Wed, 20 Jan 2016 14:52:33 +0000 (14:52 +0000)]
Fix dlltool tests for ARM targets, which do not support the --leading-underscore option.

PR 19495
* testsuite/binutils-all/dlltool.exp: Fix tests for targets which
do not support inserting leading underscores.

8 years ago[AArch64] Reject invalid immediate operands to MSR UAO
Matthew Wahab [Wed, 20 Jan 2016 14:25:46 +0000 (14:25 +0000)]
[AArch64] Reject invalid immediate operands to MSR UAO

In the instruction to write to the ARMv8.2 PSTATE field UAO,
MSR UAO, #<imm>, the immediate should be either 0 or 1 but GAS accepts
any unsigned 4-bit integer.

This patch implements the constraint on the immediate, generating an
error if the immediate operand is invalid, and adds tests for the
illegal forms.

opcodes/
2016-01-20  Matthew Wahab  <matthew.wahab@arm.com>

* aarch64-opc.c (operand_general_constraint_met_p): Check validity
of MSR UAO immediate operand.

gas/
2016-01-20  Matthew Wahab  <matthew.wahab@arm.com>

* testsuite/gas/aarch64/armv8_2-a-illegal.d: New.
* testsuite/gas/aarch64/armv8_2-a-illegal.l: New.
* testsuite/gas/aarch64/armv8_2-a-illegal.s: New.

Change-Id: Ibdec4967c00b1ef3be9dbc43d23b2c70d1a0b28c

8 years agoFix gdb/ChangeLog typo
Pedro Alves [Wed, 20 Jan 2016 13:10:41 +0000 (13:10 +0000)]
Fix gdb/ChangeLog typo

8 years agoMove ChangeLog entry to proper place (gdb/testsuite/ -> gdb/)
Pedro Alves [Wed, 20 Jan 2016 13:03:40 +0000 (13:03 +0000)]
Move ChangeLog entry to proper place (gdb/testsuite/ -> gdb/)

8 years agoAdd support for an ARM specific 'y' section attribute flag to mark the section as...
Mickael Guene [Wed, 20 Jan 2016 12:53:50 +0000 (12:53 +0000)]
Add support for an ARM specific 'y' section attribute flag to mark the section as NOREAD.

bfd/ChangeLog:
      * elf32-arm.c ((elf32_arm_special_sections): Remove catch of noread
      section using '.text.noread' pattern.

gas/ChangeLog:
      * config/obj-elf.c (obj_elf_change_section) : Allow arm section with
      SHF_ARM_NOREAD section flag.
      * config/tc-arm.h (md_elf_section_letter) : Implement this hook to
      handle letter 'y'.
     (arm_elf_section_letter) : Declare it.
      * config/tc-arm.c (arm_elf_section_letter): Handle letter 'y' to set
      SHF_ARM_NOREAD section flag.
      * doc/c-arm.texi (ARM section attribute 'y'): Document it.

gas/testsuite/ChangeLog:
      * gas/arm/section-execute-only.s: New test case.
      * gas/arm/section-execute-only.d: Expected output.

ld/testsuite/ChangeLog:
      * ld-arm/thumb1-noread-not-present-mixing-two-section.s: Add 'y'
      attribute usage.
      * ld-arm/thumb1-noread-present-one-section.s: Likewise.
      * ld-arm/thumb1-noread-present-two-section.s: Likewise.
      * ld-arm/thumb1-input-section-flag-match.s: Likewise.

binutils/ChangeLog:
      * readelf.c (get_elf_section_flags): Display y letter for section
      with SHF_ARM_NOREAD section flag in readelf section output.
      (process_section_headers): Add y letter in readelf section output
      key mapping for ARM architecture.

8 years agominor reformatting in printcmd.c::print_scalar_formatted
Joel Brobecker [Wed, 20 Jan 2016 04:01:39 +0000 (08:01 +0400)]
minor reformatting in printcmd.c::print_scalar_formatted

(GNU Coding Standard...)

gdb/ChangeLog:

        * printcmd.c (print_scalar_formatted): move binary operator from
        end of line to beginning of next line.  Adjust formatting
        accordingly.

8 years agoAutomatic date update in version.in
GDB Administrator [Wed, 20 Jan 2016 00:00:10 +0000 (00:00 +0000)]
Automatic date update in version.in

8 years agoUse a separate variable for the size passed to sysctl.
John Baldwin [Tue, 19 Jan 2016 18:23:00 +0000 (10:23 -0800)]
Use a separate variable for the size passed to sysctl.

This fixes a sign mismatch warning.

gdb/ChangeLog:

* fbsd-nat.c (fbsd_pid_to_exec_file): Use new "buflen" instead of
"len" with sysctl.

8 years agoRemove an unused variable.
John Baldwin [Tue, 19 Jan 2016 17:06:33 +0000 (09:06 -0800)]
Remove an unused variable.

binutils/ChangeLog:

* readelf.c (get_freebsd_elfcore_note_type): Remove unused variable.

8 years agoDump register notes for each thread when generating a FreeBSD core.
John Baldwin [Tue, 22 Dec 2015 00:34:15 +0000 (16:34 -0800)]
Dump register notes for each thread when generating a FreeBSD core.

gdb/ChangeLog:

* fbsd-tdep.c (find_stop_signal): Remove.
(struct fbsd_collect_regset_section_cb) <lwp>: New field.
<stop_signal>: New field.
<abort_iteration>: New field.
(fbsd_collect_regset_section_cb): Use new fields.
(fbsd_collect_thread_registers): New function.
(struct fbsd_corefile_thread_data): New structure.
(fbsd_corefile_thread): New function.
(fbsd_make_corefile_notes): Use new function to dump notes for each
non-exited thread in a process.

8 years agoAdd support for LWP-based threads on FreeBSD.
John Baldwin [Wed, 29 Apr 2015 15:53:43 +0000 (11:53 -0400)]
Add support for LWP-based threads on FreeBSD.

Older versions of FreeBSD supported userland threading via a pure
user-space threading library (N threads scheduled on 1 process) and
a N:M model (N threads scheduled on M LWPs).  However, modern FreeBSD
versions only support a M:M threading model where each user thread is
backed by a dedicated LWP.  This thread target only supports this
threading model.  It also uses ptrace to query and alter LWP state
directly rather than using libthread_db to simplify the implementation.

FreeBSD recently gained support for reporting LWP events (birth and death
of LWPs).  GDB will use LWP events when present.  For older systems it
fetches the list of LWPs in the to_update_thread_list target op to update
the list of threads on each stop.

This target supports scheduler locking by using ptrace to suspend
individual LWPs as necessary before resuming a process.

gdb/ChangeLog:

* configure.ac: Check for support for LWP names on FreeBSD.
* fbsd-nat.c [PT_LWPINFO] New variable debug_fbsd_lwp.
[TDP_RFPPWAIT || HAVE_STRUCT_PTRACE_LWPINFO_PL_TDNAME]
(fbsd_fetch_kinfo_proc): Move function earlier.
[PT_LWPINFO] (fbsd_thread_alive): New function.
[PT_LWPINFO] (fbsd_pid_to_str): New function.
[HAVE_STRUCT_PTRACE_LWPINFO_PL_TDNAME] (fbsd_thread_name): New function.
[PT_LWP_EVENTS] (fbsd_enable_lwp_events): New function.
[PT_LWPINFO] (fbsd_add_threads): New function.
[PT_LWPINFO] (fbsd_update_thread_list): New function.
[PT_LWPINFO] New variable super_resume.
[PT_LWPINFO] (resume_one_thread_cb): New function.
[PT_LWPINFO] (resume_all_threads_cb): New function.
[PT_LWPINFO] (fbsd_resume): New function.
(fbsd_remember_child): Save full ptid instead of plain pid.
(fbsd_is_child_pending): Return ptid of saved child process.
(fbsd_wait): Include lwp in returned ptid and switch to LWP ptid on
first stop.
[PT_LWP_EVENTS] Handle LWP events.
[TDP_RFPPWAIT] Include LWP in child ptid.
(fbsd_post_startup_inferior) [PT_LWP_EVENTS]: Enable LWP events.
(fbsd_post_attach) [PT_LWP_EVENTS]: Enable LWP events.
Add threads for existing processes.
(fbsd_nat_add_target) [PT_LWPINFO]: Set "to_thread_alive" to
"fbsd_thread_alive".
Set "to_pid_to_str" to "fbsd_pid_to_str".
[HAVE_STRUCT_PTRACE_LWPINFO_PL_TDNAME]: Set "to_thread_name" to
"fbsd_thread_name".
[PT_LWPINFO]: Set "to_update_thread_list" to "fbsd_update_thread_list".
Set "to_has_thread_control" to "tc_schedlock".
Set "to_resume" to "fbsd_resume".
(_initialize_fbsd_nat): New function.
* configure: Regenerate.
* config.in: Regenerate.

gdb/doc/ChangeLog:

* gdb.texinfo (Debugging Output): Document "set/show debug fbsd-lwp".

8 years agoUse LWP IDs with ptrace register requests on FreeBSD.
John Baldwin [Fri, 15 Jan 2016 20:21:07 +0000 (12:21 -0800)]
Use LWP IDs with ptrace register requests on FreeBSD.

This allows gdb to fetch per-thread registers for multi-threaded FreeBSD
processes.

Export get_ptrace_pid() from inf-ptrace.c and use it to determine the PID
to pass to ptrace in pan-BSD native targets.  NetBSD and OpenBSD also accept
LWP IDs for ptrace requests to fetch per-thread state.

gdb/ChangeLog:

* amd64bsd-nat.c (amd64bsd_fetch_inferior_registers): Use
get_ptrace_pid.
(amd64bsd_store_inferior_registers): Use get_ptrace_pid.
(amd64bsd_dr_get): Use get_ptrace_pid.
(amd64bsd_dr_set): Use get_ptrace_pid.
* i386bsd-nat.c (i386bsd_fetch_inferior_registers): Use get_ptrace_pid.
(i386bsd_store_inferior_registers): Use get_ptrace_pid.
(i386bsd_dr_get): Use get_ptrace_pid.
(i386bsd_dr_set): Use get_ptrace_pid.
* inf-ptrace.c (get_ptrace_pid): Export.
* inf-ptrace.h (get_ptrace_pid): Declare.
* ppcfbsd-nat.c (ppcfbsd_fetch_inferior_registers): Use lwp id.
(ppcfbsd_store_inferior_registers): Use lwp id.

8 years agoDisplay per-thread information for threads in FreeBSD cores.
John Baldwin [Mon, 14 Dec 2015 05:49:52 +0000 (21:49 -0800)]
Display per-thread information for threads in FreeBSD cores.

Display the LWP ID of each thread in a FreeBSD core.  Extract thread
names from the per-thread THRMISC note.

gdb/ChangeLog:

* fbsd_tdep.c (fbsd_core_pid_to_str): New function.
(fbsd_core_thread_name): New function.
(fbsd_init_abi): Add "core_pid_to_str" gdbarch method.
Add "core_thread_name" gdbarch method.

8 years agoAdd support for extracting thread names from cores.
John Baldwin [Mon, 18 Jan 2016 17:49:23 +0000 (09:49 -0800)]
Add support for extracting thread names from cores.

Add a new gdbarch method to extract a thread name from a core for a
given thread.  Use this new method in core_thread_name to implement the
to_thread_name target op.

gdb/ChangeLog:

* corelow.c (core_thread_name): New function.
(init_core_ops): Use "core_thread_name" for the "to_thread_name"
target op.
* gdbarch.sh (core_thread_name): New gdbarch callback.
* gdbarch.h: Re-generate.
* gdbarch.c: Re-generate.

8 years agoAdd a pseudosection for the NT_FREEBSD_THRMISC note.
John Baldwin [Mon, 14 Dec 2015 06:47:25 +0000 (22:47 -0800)]
Add a pseudosection for the NT_FREEBSD_THRMISC note.

bfd/ChangeLog:

* elf.c (elfcore_grok_note): Recognize NT_FREEBSD_THRMISC notes.

8 years agoAdd support to readelf for reading FreeBSD ELF core notes.
John Baldwin [Mon, 14 Dec 2015 06:26:19 +0000 (22:26 -0800)]
Add support to readelf for reading FreeBSD ELF core notes.

binutils/ChangeLog:

* readelf.c (get_freebsd_elfcore_note_type): New
(process_note): Add support for FreeBSD core notes.

include/ChangeLog:

* elf/common.h (NT_FREEBSD_THRMISC): Define.
(NT_FREEBSD_PROCSTAT_PROC): Define.
(NT_FREEBSD_PROCSTAT_FILES): Define.
(NT_FREEBSD_PROCSTAT_VMMAP): Define.
(NT_FREEBSD_PROCSTAT_GROUPS): Define.
(NT_FREEBSD_PROCSTAT_UMASK): Define.
(NT_FREEBSD_PROCSTAT_RLIMIT): Define.
(NT_FREEBSD_PROCSTAT_OSREL): Define.
(NT_FREEBSD_PROCSTAT_PSSTRINGS): Define.
(NT_FREEBSD_PROCSTAT_AUXV): Define.

8 years agoFix enum flag with Python 3
Simon Marchi [Tue, 19 Jan 2016 16:07:07 +0000 (11:07 -0500)]
Fix enum flag with Python 3

Using Python 3.5 (I assume it's the same with 3.4 and lower, but I didn't
test), I see this:

  print (enum flag_enum) (FLAG_1)^M
  Python Exception <class 'TypeError'> %x format: an integer is required, not gdb.Value: ^M
  $7 = ^M
  (gdb) FAIL: gdb.python/py-pp-maint.exp: print FLAG_1

Apparently, this idiom, where v is a gdb.Value, was possible with Python 2,
but not with Python 3:

  '%x' % v

In Python 2, it would automatically get converted to an integer.  To solve
it, I simply added wrapped v in a call to int().

  '%x' % int(v)

In Python 2, the int type is implemented with a "long" in C, so on x86-32 it's
32-bits.  I was worried that doing int(v) would truncate the value and give
wrong results for enum values > 32-bits.  However, the int type != the int
function.  The int function does the right thing, selecting the right integer
type for the given value.  I tested with large enum values on x86-32 and
Python 2, and everything works as expected.

gdb/ChangeLog:

* python/lib/gdb/printing.py (_EnumInstance.to_string): Explicitly
convert gdb.Value to integer type using int().

8 years agotestsuite: Factor out --status in DO_RUNTEST
Simon Marchi [Tue, 19 Jan 2016 16:06:11 +0000 (11:06 -0500)]
testsuite: Factor out --status in DO_RUNTEST

gdb/testsuite/ChangeLog:

* Makefile.in (DO_RUNTEST): Add --status and update usages.

8 years agoAdd missing ChangeLog entries for the last 2 commits
Simon Marchi [Tue, 19 Jan 2016 15:48:03 +0000 (10:48 -0500)]
Add missing ChangeLog entries for the last 2 commits

I did a wrong manipulation and pushed the last 2 commits without
amending them with the ChangeLog entries.

8 years agotestsuite: Add --status to runtest invocation
Simon Marchi [Mon, 18 Jan 2016 18:54:04 +0000 (13:54 -0500)]
testsuite: Add --status to runtest invocation

By default, if a test driver (a test .exp) ends with an uncaught
error/exception, the runtest command will still have a return code of 0
(success).  However, if a test (or the environment) is broken and does
not work properly, it should be considered as failed so that we can
notice it and fix it.

Passing the --status flag to runtest will make it return an error if one
of the test it runs ends up with an uncaught error.

gdb/testsuite/ChangeLog:

* Makefile.in (check-single): Pass --status to runtest.
(check/%.exp): Likewise.

8 years agotestsuite: Make check-parallel return non-zero if a test failed
Simon Marchi [Mon, 18 Jan 2016 19:07:10 +0000 (14:07 -0500)]
testsuite: Make check-parallel return non-zero if a test failed

When using the check-parallel target, the return code of make is always 0,
regardless of test results.  This patch makes it return the same code as
the "make do-check-parallel" sub-command.  So if there is a FAIL somewhere,
non-zero will be returned by make.

For the sake of example, I introduced a failure in gdb.base/break.exp.

  $ make check-single TESTS="gdb.base/break.exp gdb.python/py-value.exp" && echo 'Success :D' || echo 'Fail :('
  ...
  FAIL: gdb.base/break.exp: allo
  ...
  Fail :(

I think the parallel run should do the same.  Currently:

  $ make check-parallel TESTS="gdb.base/break.exp gdb.python/py-value.exp" && echo 'Success :D' || echo 'Fail :('
  ...
  FAIL: gdb.base/break.exp: allo
  ...
  Success :D

And with the patch (no big surprises there):

  $ make check-parallel TESTS="gdb.base/break.exp gdb.python/py-value.exp" && echo 'Success :D' || echo 'Fail :('
  ...
  FAIL: gdb.base/break.exp: allo
  ...
  Fail :(

What do you think?

gdb/testsuite/ChangeLog:

* Makefile.in (check-parallel): Propagate return code from make
do-check-parallel.

8 years agoFix detection of "r_fs" and "r_gs" on FreeBSD.
John Baldwin [Mon, 18 Jan 2016 19:59:45 +0000 (11:59 -0800)]
Fix detection of "r_fs" and "r_gs" on FreeBSD.

Include <sys/types.h> as a prerequisite for <machine/reg.h> when checking
for the r_fs and r_gs members in struct reg.  Note that the previous test
for <machine/reg.h> already includes <sys/types.h> as a prerequisite.

gdb/ChangeLog:

* configure.ac: Include <sys/types.h when checking for "r_fs" in
"struct reg".
* configure: Regenerate.

8 years agoAdd PIC and TLS support to the ARC target.
Miranda Cupertino [Tue, 19 Jan 2016 15:25:58 +0000 (15:25 +0000)]
Add PIC and TLS support to the ARC target.

bfd/ChangeLog:
* arc-plt.def: New file.
* arc-plt.h: Likewise.
* elf32-arc.c (elf_arc_abs_plt0_entry, elf_arc_abs_pltn_entry,
       elf_arcV2_abs_plt0_entry, elf_arcV2_abs_pltn_entry,
       elf_arc_pic_plt0_entry, elf_arc_pic_pltn_entry,
       elf_arcV2_pic_plt0_entry, elf_arcV2_pic_pltn_entry): Remove.
(name_for_global_symbol): Added.
(ADD_RELA): Helper to create dynamic relocs.
(new_got_entry_to_list): Create a new got entry in linked list.
(symbol_has_entry_of_type): Search for specific type of entry in
list.
(is_reloc_for_GOT): return FALSE for any TLS related relocs.
(is_reloc_for_TLS, arc_elf_set_private_flags)
(arc_elf_print_private_bfd_data, arc_elf_copy_private_bfd_data)
(arc_elf_merge_private_bfd_data): New functions.
(debug_arc_reloc): Cleaned debug info printing.
(PDATA reloc): Changed not to perform address alignment.
(reverse_me): Added. Fix for ARC_32 relocs.
(arc_do_relocation): Return bfd_reloc_of when no relocation should
occur.
(arc_get_local_got_ents): Renamed from arc_get_local_got_offsets.
Changed function to access an array of list of GOT entries instead
of just an array of offsets.
(elf_arc_relocate_section): Added support for PIC and TLS related relocations.
(elf_arc_check_relocs): Likewise.
(elf_arc_adjust_dynamic_symbol, elf_arc_finish_dynamic_symbol,
(elf_arc_finish_dynamic_sections): Likewise
(arc_create_dynamic_sections): Modified conditions to create
dynamic sections.
(ADD_SYMBOL_REF_SEC_AND_RELOC): New macro.
(plt_do_relocs_for_symbol, relocate_plt_for_symbol)
(relocate_plt_for_entry): Changed to support new way to define PLT
related code.
(add_symbol_to_plt): Likewise.
(arc_elf_link_hash_table_create): New function.

include/ChangeLog:
* elf/arc-reloc.def (ARC_32, ARC_GOTPC, ARC_TLS_GD_GOT)
(ARC_TLS_IE_GOT, ARC_TLS_DTPOFF, ARC_TLS_DTPOFF_S9, ARC_TLS_LE_S9)
(ARC_TLS_LE_32): Fixed formula.
(ARC_TLS_GD_LD): Use new special function.
* opcode/arc-func.h: Changed all the replacement
functions to clear the patching bits before doing an or it with the value
argument.

8 years agoLimit breakpoint re-set to the current program space
Pedro Alves [Tue, 19 Jan 2016 12:18:14 +0000 (12:18 +0000)]
Limit breakpoint re-set to the current program space

Currently, we always re-set all locations of all breakpoints.  This
commit makes us re-set only locations of the current program space.

If we loaded symbols to a program space (e.g., "file" command or some
shared library was loaded), GDB must run through all breakpoints and
determine if any new locations need to be added to the breakpoint.
However, there's no reason to recreate locations for _other_ program
spaces, as those haven't changed.

Similarly, when we create a new inferior, through e.g., a fork, GDB
must run through all breakpoints and determine if any new locations
need to be added to the breakpoint.  There's no reason to destroy the
locations of the parent inferior and other inferiors.  We know those
won't change.

In addition to being inneficient, resetting breakpoints of inferiors
that are currently running is problematic, because:

 - some targets can't read memory while the inferior is running.

 - the inferior might exit while we're re-setting its breakpoints,
   which may confuse prologue skipping.

I went through all the places where we call breakpoint_re_set, and it
seems to me that all can be changed to only re-set locations of the
current program space.

The patch that reversed threads order in "info threads" etc. happened
to make gdb.threads/fork-plus-thread.exp expose this problem when
testing on x86/-m32.  The problem was latent and masked out by chance
by the code-cache:

 https://sourceware.org/ml/gdb-patches/2016-01/msg00213.html

Tested on x86-64 F20, native (-m64/-m32) and extended-remote
gdbserver.

Fixes the regression discussed in the url above with --target_board=unix/-m32:

 -FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: inferior 1 exited
 +PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: inferior 1 exited
 -FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: no threads left (timeout)
 -FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: only inferior 1 left (the program exited)
 +PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: no threads left
 +PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: only inferior 1 left

gdb/ChangeLog:
2016-01-19  Pedro Alves  <palves@redhat.com>

* ax-gdb.c (agent_command_1): Adjust call to decode_line_full.
* break-catch-throw.c (re_set_exception_catchpoint): Pass the
current program space down to linespec decoding and breakpoint
location updating.
* breakpoint.c (parse_breakpoint_sals): Adjust calls to
decode_line_full.
(until_break_command): Adjust calls to decode_line_1.
(base_breakpoint_decode_location, bkpt_decode_location): Add
'search_pspace' parameter.  Pass it along.
(bkpt_probe_create_sals_from_location): Adjust calls to
parse_probes.
(tracepoint_decode_location, tracepoint_probe_decode_location)
(strace_marker_decode_location): Add 'search_pspace' parameter.
Pass it along.
(all_locations_are_pending): Rewrite to take a breakpoint and
program space as arguments instead.
(hoist_existing_locations): New function.
(update_breakpoint_locations): Add 'filter_pspace' parameter.  Use
hoist_existing_locations instead of always removing all locations,
and adjust to all_locations_are_pending change.
(location_to_sals): Add 'search_pspace' parameter.  Pass it along.
Don't disable the breakpoint if there are other locations in
another program space.
(breakpoint_re_set_default): Adjust to pass down the current
program space as filter program space.
(decode_location_default): Add 'search_pspace' parameter and pass
it along.
(prepare_re_set_context): Don't switch program space here.
(breakpoint_re_set): Use save_current_space_and_thread instead of
save_current_program_space.
* breakpoint.h (struct breakpoint_ops) <decode_location>: Add
'search_pspace' parameter.
(update_breakpoint_locations): Add 'filter_pspace' parameter.
* cli/cli-cmds.c (edit_command, list_command): Adjust calls to
decode_line_1.
* elfread.c (elf_gnu_ifunc_resolver_return_stop): Pass the current
program space as filter program space.
* linespec.c (struct linespec_state) <search_pspace>: New field.
(create_sals_line_offset, convert_explicit_location_to_sals)
(parse_linespec): Pass the search program space down.
(linespec_state_constructor): Add 'search_pspace' parameter.
Store it.
(linespec_parser_new): Add 'search_pspace' parameter and pass it
along.
(linespec_lex_to_end): Adjust.
(decode_line_full, decode_line_1): Add 'search_pspace' parameter
and pass it along.
(decode_line_with_last_displayed): Adjust.
(collect_symtabs_from_filename, symtabs_from_filename): New
'search_pspace' parameter.  Use it.
(find_function_symbols): Pass the search program space down.
* linespec.h (decode_line_1, decode_line_full): Add
'search_pspace' parameter.
* probe.c (parse_probes_in_pspace): New function, factored out
from ...
(parse_probes): ... this.  Add 'search_pspace' parameter and use
it.
* probe.h (parse_probes): Add pspace' parameter.
* python/python.c (gdbpy_decode_line): Adjust.
* tracepoint.c (scope_info): Adjust.

8 years agotestsuite/gdb.trace: Fix expected message on continue.
Marcin Kościelnicki [Tue, 19 Jan 2016 11:30:34 +0000 (12:30 +0100)]
testsuite/gdb.trace: Fix expected message on continue.

This is fallout from f303dbd60d9c7984832446eeb9d4e4d89703c615.

The testcases themselves are single-threaded, but they load the IPA library,
which injects a thread in the inferior - making them multithreaded.
This results in printing the thread numbers in breakpoint messages.

gdb/testsuite/ChangeLog:

* gdb.trace/ftrace.exp: Fix expected message on continue.
* gdb.trace/pending.exp: Fix expected message on continue.
* gdb.trace/trace-break.exp: Fix expected message on continue.

8 years agoFix PR18735 test for RL78.
Nick Clifton [Tue, 19 Jan 2016 09:57:03 +0000 (09:57 +0000)]
Fix PR18735 test for RL78.

* testsuite/ld-elf/pr18735.d: Allow for extra symbols between
foo@FOO and bar@@FOO.

8 years agoAutomatic date update in version.in
GDB Administrator [Tue, 19 Jan 2016 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in