deliverable/binutils-gdb.git
9 years agoAlso install readelf into tooldir/bin directory
H.J. Lu [Fri, 28 Aug 2015 15:34:44 +0000 (08:34 -0700)] 
Also install readelf into tooldir/bin directory

* Makefile.am (TOOL_PROGS): Add readelf.
* Makefile.in: Regenerated.

9 years agoAutomatic date update in version.in
GDB Administrator [Fri, 28 Aug 2015 00:00:08 +0000 (00:00 +0000)] 
Automatic date update in version.in

9 years agoFix ChangeLog entries starting with "Likewise"
Simon Marchi [Thu, 27 Aug 2015 17:47:44 +0000 (13:47 -0400)] 
Fix ChangeLog entries starting with "Likewise"

The first lines of these ChangeLog entries are "Likewise"... it doesn't
make much sense.

9 years ago[Cell/B.E.] Fix wrong relocation for TLS variable offset
Ulrich Weigand [Thu, 27 Aug 2015 17:31:04 +0000 (19:31 +0200)] 
[Cell/B.E.] Fix wrong relocation for TLS variable offset

When debugging Cell/B.E. code, the cross-architecture frame unwinding
works by accessing data structures refered to by a thread-local variable
in the inferior.  While accessing this variable via minimal symbol,
code would use BMSYMBOL_VALUE_ADDRESS to determine the offset of the
variable in the thread-local storage block.

This is incorrect, since it adds any relocation offset of the shared
library defining the TLS variable.  That offset would be OK when
accessing the initial copy present in the .tbss section, but it must
not be applied to the offset of the variable in the TLS block at
runtime.  Depending on whether or not the libspe2.so library was
prelinked, access to the variable would fail due to the incorrectly
relocated offset.

ChangeLog:

* ppc-linux-tdep.c (ppc_linux_spe_context_lookup): Do not
attempt to relocate a TLS variable offset.

9 years ago[Cell/B.E.] Make parse_spufs_run more robust
Ulrich Weigand [Thu, 27 Aug 2015 17:27:40 +0000 (19:27 +0200)] 
[Cell/B.E.] Make parse_spufs_run more robust

With recent changes to inferior handling, parse_spufs_run needs to be
more careful in assumptions it makes.  In particular, this patch:

- Bails out early if the current inferior has not yet been registered
  (e.g. during fork procession) to avoid assertion failures in register
  cache code.

- Sets inferior_ptid to the current ptid while calling target_read_memory
  to make sure the correct process is accessed if parse_spufs_run is
  called early when inferior_ptid has not yet been switched by the caller.

ChangeLog:

* spu-multiarch.c (parse_spufs_run): Bail out if inferior is not
registered yet.  Set inferior_ptid while calling target_read_memory.

9 years agoDetect SW breakpoints in Cell/B.E. combined debugging
Ulrich Weigand [Thu, 27 Aug 2015 17:20:29 +0000 (19:20 +0200)] 
Detect SW breakpoints in Cell/B.E. combined debugging

The Linux target and gdbserver now check the siginfo si_code
reported on a SIGTRAP to detect whether the trap indicates
a software breakpoint was hit.

Unfortunately, on Cell/B.E., the kernel uses an si_code value
of TRAP_BRKPT when a SW breakpoint was hit in PowerPC code,
but a si_code value of SI_KERNEL when a SW breakpoint was
hit in SPU code.

This patch updates Linux target and gdbserver to accept both
si_code values to indicate SW breakpoint on PowerPC.

ChangeLog:

* nat/linux-ptrace.h (GDB_ARCH_TRAP_BRKPT): Replace by ...
(GDB_ARCH_IS_TRAP_BRKPT): ... this.  Add __powerpc__ case.
* linux-nat.c (check_stopped_by_breakpoint): Use
GDB_ARCH_IS_TRAP_BRKPT instead of GDB_ARCH_TRAP_BRKPT.

gdbserver/ChangeLog:

* linux-low.c (check_stopped_by_breakpoint): Use
GDB_ARCH_IS_TRAP_BRKPT instead of GDB_ARCH_TRAP_BRKPT.

9 years agoFix assertion failure in linux-thread-db
Ulrich Weigand [Thu, 27 Aug 2015 17:12:49 +0000 (19:12 +0200)] 
Fix assertion failure in linux-thread-db

Since we are no longer using thread events by default in linux-thread-db,
the find_new_threads_once routine contains an assertion that it should
never be called on a live inferior unless using thread events:
  gdb_assert (!target_has_execution || thread_db_use_events ());

However, there is a code path from thread_db_get_thread_local_address
that will in fact call find_new_threads_once in some scenarios.  In
particular, this is currently always triggered when starting up any
Cell/B.E. combined exeuctable.

To fix this, this patch removes the call to thread_db_find_new_threads_1
when the current thread was not yet detected.  In its place, we now just
call thread_from_lwp to detect this one thread if necessary.

ChangeLog:

* linux-thread-db.c (thread_db_get_thread_local_address): If the
thread was not yet discovered, use thread_from_lwp instead of
calling thread_db_find_new_threads_1.

9 years agoReport UNRESOLVED on failures while detecting Cell/B.E.
Ulrich Weigand [Thu, 27 Aug 2015 17:06:03 +0000 (19:06 +0200)] 
Report UNRESOLVED on failures while detecting Cell/B.E.

The gdb.cell testcases use the predicate skip_cell_tests defined in
lib/cell.exp to determine whether Cell/B.E. test cases ought to be
run. This tests verifies that we have a toolchain that supports
generating combined Cell/B.E. binaries, and that the target machine
actually is a Cell/B.E.

In order to do so, a small test program is built and run (under the
debugger).  Any failure is taken as a sign that we don't have a
Cell/B.E. machine and the tests are to be skipped.

This has the unfortunate effect that a serious bug in GDB that causes
internal compiler errors even on the trivial test program does not
lead to any failures in the testsuite, since now all gdb.cell test
are simply skipped.

This patch changes skip_cell_tests to at least report UNRESOLVED
in cases where execution of the test program fails in unexpected
ways.

testsuite/ChangeLog:

* lib/cell.exp (skip_cell_tests): Report UNRESOLVED on unexpected
failures to run the test program under GDB.

9 years agoAdd reloc sort test
Alan Modra [Thu, 27 Aug 2015 06:35:54 +0000 (16:05 +0930)] 
Add reloc sort test

* ld-powerpc/relocsort.s, * ld-powerpc/relocsort.d: New test.
* ld-powerpc/powerpc.exp: Run it.

9 years agoMore fallout from "Allow symbol and label names to be enclosed in double quotes"
Alan Modra [Thu, 27 Aug 2015 13:20:38 +0000 (22:50 +0930)] 
More fallout from "Allow symbol and label names to be enclosed in double quotes"

Some of the TC_START_LABEL implementations need to adjust the end of
the symbol, when a colon doesn't mean a label definition.  That means
they need access to nul_char both the restore the NUL location (it may
be a quote rather than a colon) and to store the new nul_char.  Others
need adjusting to step over a potential trailing quote.

PR gas/18581
* config/tc-aarch64.h (TC_START_LABEL): Redefine.
* config/tc-arm.c (tc_start_label_without_colon): Delete params.
Use input_line_pointer directly.
* config/tc-arm.h (TC_START_LABEL): Redefine.
(TC_START_LABEL_WITHOUT_COLON): Redefine.
(tc_start_label_without_colon): Update prototype.
* config/tc-bfin.c (bfin_start_label): Delete ptr param.  Check
for NUL instead.
* config/tc-bfin.h (bfin_start_label): Update prototype.
(TC_START_LABEL): Redefine.
* config/tc-d30v.h (TC_START_LABEL): Redefine.
* config/tc-fr30.c (restore_colon): Rewrite.
(fr30_is_colon_insn): Add nul_char param.  Return int.  Bump
i_l_p over quote.  Update restore_colon calls.
* config/tc-fr30.h (TC_START_LABEL): Redefine.
(fr30_is_colon_insn): Update prototype.
* config/tc-m32c.c (restore_colon, m32c_is_colon_insn): As above.
* config/tc-m32c.h (TC_START_LABEL): Redefine.
(m32c_is_colon_insn): Update prototype.
* config/tc-m32r.h (TC_START_LABEL): Redefine.
* config/tc-mep.h (TC_START_LABEL): Redefine.
* config/tc-nds32.h (TC_START_LABEL): Redefine.
* config/tc-tic54x.c (tic54x_start_label): Replace params with
nul_char and next_char.  Step over trailing quote.
* config/tc-tic54x.h (TC_START_LABEL_WITHOUT_COLON): Redefine.
(tic54x_start_label): Update prototype.
* read.c (TC_START_LABEL): Redefine.  Update invocation.
(TC_START_LABEL_WITHOUT_COLON): Update invocation.
* config/tc-nios2.c (s_nios2_set): Save initial input_line_pointer
and restore if calling s_set.  Don't restore delim again.

9 years agoFix inverted statements in m88k_analyze_prologue
Simon Marchi [Thu, 27 Aug 2015 13:47:14 +0000 (09:47 -0400)] 
Fix inverted statements in m88k_analyze_prologue

These two statements were inverted by mistake in commit "Replace some
xmalloc-family functions with XNEW-family ones".  It obviously doesn't
make sense to have them in this order, which is why I am pushing this as
obvious.

gdb/ChangeLog:

* m88k-tdep.c (m88k_analyze_prologue): Fix inverted allocation
statements.

9 years agoRemove duplicate ChangeLog entry
Simon Marchi [Thu, 27 Aug 2015 13:32:19 +0000 (09:32 -0400)] 
Remove duplicate ChangeLog entry

9 years agoDocument non-8-bits addressable memory support in NEWS
Simon Marchi [Thu, 27 Aug 2015 13:30:00 +0000 (09:30 -0400)] 
Document non-8-bits addressable memory support in NEWS

I think it would be a good idea to document that gdb now has (basic)
support to read/write memory on architectures with non-8-bits memory.
Hopefully somebody will see it and say "Hey!  We can now (more easily)
port GDB to our strange DSP that has 32-bits-addressable memory!" and do
it.

gdb/ChangeLog:

* NEWS: Document support for non-8-bits addressable memory.

9 years agogdbserver/proc-service.c: bogus return value conversion
Pedro Alves [Thu, 27 Aug 2015 12:37:01 +0000 (13:37 +0100)] 
gdbserver/proc-service.c: bogus return value conversion

Building in C++ mode shows:

   int write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
       ^
  src/gdb/gdbserver/proc-service.c:93:64: error: invalid conversion from ‘int’ to ‘ps_err_e’ [-fpermissive]
     return write_inferior_memory ((unsigned long) addr, buf, size);
  ^

It only works today by accident, write_inferior_memory does not return
a ps_err_e.

gdb/gdbserver/ChangeLog:
2015-08-27  Pedro Alves  <palves@redhat.com>

* proc-service.c (ps_pdwrite): Return PS_ERR/PS_OK explicily.

9 years agogdb: Drop use of obsolete AC_TYPE_SIGNAL
Pedro Alves [Thu, 27 Aug 2015 12:26:23 +0000 (13:26 +0100)] 
gdb: Drop use of obsolete AC_TYPE_SIGNAL

Since we're using sighandler_t, nothing else refers to RETSIGTYPE in
gdb.

(Actually, given gdb/remote.c has been assuming signal handlers return
void for a long time, we could have gotten get rid of this even
without gnulib's sighandler_t.)

gdb/ChangeLog:
2015-08-27  Pedro Alves  <palves@redhat.com>

* configure.ac: Remove AC_TYPE_SIGNAL call.
* configure, config.in: Regenerate.

9 years agogdb: Use sighandler_t everywhere
Pedro Alves [Thu, 27 Aug 2015 12:26:23 +0000 (13:26 +0100)] 
gdb: Use sighandler_t everywhere

This fixes 14 build errors like these in C++ mode:

 src/gdb/extension.c: In function ‘void install_sigint_handler(const signal_handler*)’:
 src/gdb/extension.c:698:41: error: invalid conversion from ‘void (*)()’ to ‘__sighandler_t {aka void (*)(int)}’ [-fpermissive]
    signal (SIGINT, handler_state->handler);
  ^
 In file included from build-gnulib/import/signal.h:52:0,
  from ../../src/gdb/extension.c:24:
 /usr/include/signal.h:102:23: error:   initializing argument 2 of ‘void (* signal(int, __sighandler_t))(int)’ [-fpermissive]
  extern __sighandler_t signal (int __sig, __sighandler_t __handler)
^

Instead of this everywhere:

 -  RETSIGTYPE (*handle_sigint_for_compare) () = handle_sigint;
 +  RETSIGTYPE (*handle_sigint_for_compare) (int) = handle_sigint;

Use sighandler_t (a GNU extension).  That's OK to use unconditionaly
because gnulib's signal.h replacement makes sure that it is available.

gdb/ChangeLog:
2015-08-27  Pedro Alves  <palves@redhat.com>

* cp-support.c (gdb_demangle): Use sighandler_t.  Remove cast.
* extension-priv.h: Include signal.h.
(struct signal_handler) <handler>: Change type to sighandler_t.
* extension.c (install_gdb_sigint_handler): Use sighandler_t.
* inflow.c (sigint_ours, sigquit_ours): Change type to
sighandler_t.
(child_terminal_inferior): Remove casts.
(child_terminal_ours_1, new_tty): Use sighandler_t.  Remove casts.
(osig): Change type to sighandler_t.
* nto-procfs.c (ofunc): Change type to sighandler_t.
(procfs_wait): Remove casts.
* remote-m32r-sdi.c (m32r_wait, m32r_load): Use sighandler_t.
* remote-sim.c (gdbsim_wait): Use sighandler_t.
* utils.c (wait_to_die_with_timeout): Use sighandler_t.

9 years agoImport the "signal-h" module from gnulib
Pedro Alves [Thu, 27 Aug 2015 12:26:22 +0000 (13:26 +0100)] 
Import the "signal-h" module from gnulib

This gives us a signal.h replacement that makes sure the sighandler_t
typedef (a GNU extension) is always available.  A follow up patch will
make use of this.

gdb/ChangeLog:
2015-08-27  Pedro Alves  <palves@redhat.com>

* gnulib/update-gnulib.sh (IMPORTED_GNULIB_MODULES): Add signal-h.
* gnulib/aclocal.m4: Renegerate.
* gnulib/config.in: Renegerate.
* gnulib/configure: Renegerate.
* gnulib/import/Makefile.am: Update.
* gnulib/import/Makefile.in: Regenerate.
* gnulib/import/m4/gnulib-cache.m4: Update.
* gnulib/import/m4/gnulib-comp.m4: Update.
* gnulib/import/m4/signal_h.m4: New file.
* gnulib/import/signal.in.h: New file.

9 years agoFix ChangeLog entry date and mention gdb/18804
Pedro Alves [Thu, 27 Aug 2015 12:09:39 +0000 (13:09 +0100)] 
Fix ChangeLog entry date and mention gdb/18804

9 years agogdb: remove packet size limit
Pedro Alves [Thu, 27 Aug 2015 12:03:15 +0000 (13:03 +0100)] 
gdb: remove packet size limit

The remote packet buffer size is currently capped to 16384 mostly for
historical reasons, related to use of alloca.  Stop using alloca and
remove the limitation.

Tested on x86_64 Fedora 20.

gdb/ChangeLog:
2015-08-27  Pedro Alves  <palves@redhat.com>

* remote.c (DEFAULT_MAX_MEMORY_PACKET_SIZE)
(MIN_MEMORY_PACKET_SIZE): New.
(MAX_REMOTE_PACKET_SIZE, MIN_REMOTE_PACKET_SIZE): Delete.
(get_memory_packet_size): Adjust.  No longer limit the max packet
size.
(set_memory_packet_size): Adjust, and remove dead code.
(remote_check_symbols): Use xmalloc and a cleanup instead of
alloca.
(remote_packet_size): No longer cap the packet size.
(putpkt_binary): Use xmalloc and a cleanup instead of alloca.

9 years agoMention language in compile error message
Luis Machado [Thu, 27 Aug 2015 05:00:16 +0000 (02:00 -0300)] 
Mention language in compile error message

This patch improves one of the compile error messages by mentioning the
language.

Before - No compiler support for this language.
After  - No compiler support for language <language>.

gdb/ChangeLog:

2015-08-26  Luis Machado  <lgustavo@codesourcery.com>

* compile/compile.c (compile_to_object): Mention language in
error message.

9 years agoForce language to C in gdb.compile/compile-ifunc.exp
Luis Machado [Thu, 27 Aug 2015 04:49:05 +0000 (01:49 -0300)] 
Force language to C in gdb.compile/compile-ifunc.exp

Due to the lack of debug information in the binary, GDB is unable to figure
out what language is being used.  This may be a problem when doing remote
debugging and the binary stops at the entry point containing asm code.

In this case GDB will switch to asm as current language and will not switch
back to C when it reaches main, which in turn causes the compile feature check
to malfunction.

This is solved by forcing the language to C after reaching main.

gdb/testsuite/ChangeLog:

2015-08-26  Luis Machado  <lgustavo@codesourcery.com>

* gdb.compile/compile-ifunc.exp (with_test_prefix): Force language
to C.

9 years agoAdd missing pr reference
Alan Modra [Thu, 27 Aug 2015 01:29:36 +0000 (10:59 +0930)] 
Add missing pr reference

9 years agoDon't sort ld -r output relocs on alpha
Alan Modra [Thu, 27 Aug 2015 01:24:28 +0000 (10:54 +0930)] 
Don't sort ld -r output relocs on alpha

LITERAL/LITUSE relocs must be kept together.

* elf64-alpha.c (elf64_alpha_sort_relocs_p): New function.
(elf_backend_sort_relocs_p): Define.

9 years agoUnset attach_flag when running a new process
Patrick Palka [Thu, 30 Jul 2015 00:03:43 +0000 (20:03 -0400)] 
Unset attach_flag when running a new process

We currently set attach_flag when attaching to a process, so we should
make sure to unset it when forking a new process.  Otherwise attach_flag
would remain set after forking, if the previous process associated with
the inferior was attached to.

gdb/ChangeLog:

* target.c (target_pre_inferior): Unset attach_flag.

gdb/testsuite/ChangeLog:

* gdb.base/run-after-attach.exp: New test file.
* gdb.base/run-after-attach.c: New test file.

9 years agoAutomatic date update in version.in
GDB Administrator [Thu, 27 Aug 2015 00:00:08 +0000 (00:00 +0000)] 
Automatic date update in version.in

9 years agoFix gdbarch.c build error
Simon Marchi [Wed, 26 Aug 2015 21:31:47 +0000 (17:31 -0400)] 
Fix gdbarch.c build error

I made a mistake while handling my previous patch.  A change in
gdbarch causes a build failure.

gdb/ChangeLog:

* gdbarch.sh (append_name): Fix type in XRESIZEVEC.
* gdbarch.c: Re-generate.

9 years agoReplace some xmalloc-family functions with XNEW-family ones
Simon Marchi [Wed, 26 Aug 2015 21:16:07 +0000 (17:16 -0400)] 
Replace some xmalloc-family functions with XNEW-family ones

This patch is part of the make-gdb-buildable-in-C++ effort.  The idea is
to change some calls to the xmalloc family of functions to calls to the
equivalents in the XNEW family.  This avoids adding an explicit cast, so
it keeps the code a bit more readable.  Some of them also map relatively
well to a C++ equivalent (XNEW (struct foo) -> new foo), so it will be
possible to do scripted replacements if needed.

I only changed calls that were obviously allocating memory for one or
multiple "objects".  Allocation of variable sizes (such as strings or
buffer handling) will be for later (and won't use XNEW).

  - xmalloc (sizeof (struct foo)) -> XNEW (struct foo)
  - xmalloc (num * sizeof (struct foo)) -> XNEWVEC (struct foo, num)
  - xcalloc (1, sizeof (struct foo)) -> XCNEW (struct foo)
  - xcalloc (num, sizeof (struct foo)) -> XCNEWVEC (struct foo, num)
  - xrealloc (p, num * sizeof (struct foo) -> XRESIZEVEC (struct foo, p, num)
  - obstack_alloc (ob, sizeof (struct foo)) -> XOBNEW (ob, struct foo)
  - obstack_alloc (ob, num * sizeof (struct foo)) -> XOBNEWVEC (ob, struct foo, num)
  - alloca (sizeof (struct foo)) -> XALLOCA (struct foo)
  - alloca (num * sizeof (struct foo)) -> XALLOCAVEC (struct foo, num)

Some instances of xmalloc followed by memset to zero the buffer were
replaced by XCNEW or XCNEWVEC.

I regtested on x86-64, Ubuntu 14.04, but the patch touches many
architecture-specific files.  For those I'll have to rely on the
buildbot or people complaining that I broke their gdb.

gdb/ChangeLog:

* aarch64-linux-nat.c (aarch64_add_process): Likewise.
* aarch64-tdep.c (aarch64_gdbarch_init): Likewise.
* ada-exp.y (write_ambiguous_var): Likewise.
* ada-lang.c (resolve_subexp): Likewise.
(user_select_syms): Likewise.
(assign_aggregate): Likewise.
(ada_evaluate_subexp): Likewise.
(cache_symbol): Likewise.
* addrmap.c (allocate_key): Likewise.
(addrmap_create_mutable): Likewise.
* aix-thread.c (sync_threadlists): Likewise.
* alpha-tdep.c (alpha_push_dummy_call): Likewise.
(alpha_gdbarch_init): Likewise.
* amd64-windows-tdep.c (amd64_windows_push_arguments): Likewise.
* arm-linux-nat.c (arm_linux_add_process): Likewise.
* arm-linux-tdep.c (arm_linux_displaced_step_copy_insn): Likewise.
* arm-tdep.c (push_stack_item): Likewise.
(arm_displaced_step_copy_insn): Likewise.
(arm_gdbarch_init): Likewise.
(_initialize_arm_tdep): Likewise.
* avr-tdep.c (push_stack_item): Likewise.
* ax-general.c (new_agent_expr): Likewise.
* block.c (block_initialize_namespace): Likewise.
* breakpoint.c (alloc_counted_command_line): Likewise.
(update_dprintf_command_list): Likewise.
(parse_breakpoint_sals): Likewise.
(decode_static_tracepoint_spec): Likewise.
(until_break_command): Likewise.
(clear_command): Likewise.
(update_global_location_list): Likewise.
(get_breakpoint_objfile_data) Likewise.
* btrace.c (ftrace_new_function): Likewise.
(btrace_set_insn_history): Likewise.
(btrace_set_call_history): Likewise.
* buildsym.c (add_symbol_to_list): Likewise.
(record_pending_block): Likewise.
(start_subfile): Likewise.
(start_buildsym_compunit): Likewise.
(push_subfile): Likewise.
(end_symtab_get_static_block): Likewise.
(buildsym_init): Likewise.
* cli/cli-cmds.c (source_command): Likewise.
* cli/cli-decode.c (add_cmd): Likewise.
* cli/cli-script.c (build_command_line): Likewise.
(setup_user_args): Likewise.
(realloc_body_list): Likewise.
(process_next_line): Likewise.
(copy_command_lines): Likewise.
* cli/cli-setshow.c (do_set_command): Likewise.
* coff-pe-read.c (read_pe_exported_syms): Likewise.
* coffread.c (coff_locate_sections): Likewise.
(coff_symtab_read): Likewise.
(coff_read_struct_type): Likewise.
* common/cleanups.c (make_my_cleanup2): Likewise.
* common/common-exceptions.c (throw_it): Likewise.
* common/filestuff.c (make_cleanup_close): Likewise.
* common/format.c (parse_format_string): Likewise.
* common/queue.h (DEFINE_QUEUE_P): Likewise.
* compile/compile-object-load.c (munmap_list_add): Likewise.
(compile_object_load): Likewise.
* compile/compile-object-run.c (compile_object_run): Likewise.
* compile/compile.c (append_args): Likewise.
* corefile.c (specify_exec_file_hook): Likewise.
* cp-support.c (make_symbol_overload_list): Likewise.
* cris-tdep.c (push_stack_item): Likewise.
(cris_gdbarch_init): Likewise.
* ctf.c (ctf_trace_file_writer_new): Likewise.
* dbxread.c (init_header_files): Likewise.
(add_new_header_file): Likewise.
(init_bincl_list): Likewise.
(dbx_end_psymtab): Likewise.
(start_psymtab): Likewise.
(dbx_end_psymtab): Likewise.
* dcache.c (dcache_init): Likewise.
* dictionary.c (dict_create_hashed): Likewise.
(dict_create_hashed_expandable): Likewise.
(dict_create_linear): Likewise.
(dict_create_linear_expandable): Likewise.
* dtrace-probe.c (dtrace_process_dof_probe): Likewise.
* dummy-frame.c (register_dummy_frame_dtor): Likewise.
* dwarf2-frame-tailcall.c (cache_new_ref1): Likewise.
* dwarf2-frame.c (dwarf2_build_frame_info): Likewise.
(decode_frame_entry_1): Likewise.
* dwarf2expr.c (new_dwarf_expr_context): Likewise.
* dwarf2loc.c (dwarf2_compile_expr_to_ax): Likewise.
* dwarf2read.c (dwarf2_has_info): Likewise.
(create_signatured_type_table_from_index): Likewise.
(dwarf2_read_index): Likewise.
(dw2_get_file_names_reader): Likewise.
(create_all_type_units): Likewise.
(read_cutu_die_from_dwo): Likewise.
(init_tu_and_read_dwo_dies): Likewise.
(init_cutu_and_read_dies): Likewise.
(create_all_comp_units): Likewise.
(queue_comp_unit): Likewise.
(inherit_abstract_dies): Likewise.
(read_call_site_scope): Likewise.
(dwarf2_add_field): Likewise.
(dwarf2_add_typedef): Likewise.
(dwarf2_add_member_fn): Likewise.
(attr_to_dynamic_prop): Likewise.
(abbrev_table_alloc_abbrev): Likewise.
(abbrev_table_read_table): Likewise.
(add_include_dir): Likewise.
(add_file_name): Likewise.
(dwarf_decode_line_header): Likewise.
(dwarf2_const_value_attr): Likewise.
(dwarf_alloc_block): Likewise.
(parse_macro_definition): Likewise.
(set_die_type): Likewise.
(write_psymtabs_to_index): Likewise.
(create_cus_from_index): Likewise.
(dwarf2_create_include_psymtab): Likewise.
(process_psymtab_comp_unit_reader): Likewise.
(build_type_psymtab_dependencies): Likewise.
(read_comp_units_from_section): Likewise.
(compute_compunit_symtab_includes): Likewise.
(create_dwo_unit_in_dwp_v1): Likewise.
(create_dwo_unit_in_dwp_v2): Likewise.
(read_func_scope): Likewise.
(process_structure_scope): Likewise.
(mark_common_block_symbol_computed): Likewise.
(load_partial_dies): Likewise.
(dwarf2_symbol_mark_computed): Likewise.
* elfread.c (elf_symfile_segments): Likewise.
(elf_read_minimal_symbols): Likewise.
* environ.c (make_environ): Likewise.
* eval.c (evaluate_subexp_standard): Likewise.
* event-loop.c (create_file_handler): Likewise.
(create_async_signal_handler): Likewise.
(create_async_event_handler): Likewise.
(create_timer): Likewise.
* exec.c (build_section_table): Likewise.
* fbsd-nat.c (fbsd_remember_child): Likewise.
* fork-child.c (fork_inferior): Likewise.
* frv-tdep.c (new_variant): Likewise.
* gdbarch.sh (gdbarch_alloc): Likewise.
(append_name): Likewise.
* gdbtypes.c (rank_function): Likewise.
(copy_type_recursive): Likewise.
(add_dyn_prop): Likewise.
* gnu-nat.c (make_proc): Likewise.
(make_inf): Likewise.
(gnu_write_inferior): Likewise.
* gnu-v3-abi.c (build_gdb_vtable_type): Likewise.
(build_std_type_info_type): Likewise.
* guile/scm-param.c (compute_enum_list): Likewise.
* guile/scm-utils.c (gdbscm_parse_function_args): Likewise.
* guile/scm-value.c (gdbscm_value_call): Likewise.
* h8300-tdep.c (h8300_gdbarch_init): Likewise.
* hppa-tdep.c (hppa_init_objfile_priv_data): Likewise.
(read_unwind_info): Likewise.
* ia64-tdep.c (ia64_gdbarch_init): Likewise.
* infcall.c (dummy_frame_context_saver_setup): Likewise.
(call_function_by_hand_dummy): Likewise.
* infcmd.c (step_once): Likewise.
(finish_forward): Likewise.
(attach_command): Likewise.
(notice_new_inferior): Likewise.
* inferior.c (add_inferior_silent): Likewise.
* infrun.c (add_displaced_stepping_state): Likewise.
(save_infcall_control_state): Likewise.
(save_inferior_ptid): Likewise.
(_initialize_infrun): Likewise.
* jit.c (bfd_open_from_target_memory): Likewise.
(jit_gdbarch_data_init): Likewise.
* language.c (add_language): Likewise.
* linespec.c (decode_line_2): Likewise.
* linux-nat.c (add_to_pid_list): Likewise.
(add_initial_lwp): Likewise.
* linux-thread-db.c (add_thread_db_info): Likewise.
(record_thread): Likewise.
(info_auto_load_libthread_db): Likewise.
* m32c-tdep.c (m32c_gdbarch_init): Likewise.
* m68hc11-tdep.c (m68hc11_gdbarch_init): Likewise.
* m68k-tdep.c (m68k_gdbarch_init): Likewise.
* m88k-tdep.c (m88k_analyze_prologue): Likewise.
* macrocmd.c (macro_define_command): Likewise.
* macroexp.c (gather_arguments): Likewise.
* macroscope.c (sal_macro_scope): Likewise.
* macrotab.c (new_macro_table): Likewise.
* mdebugread.c (push_parse_stack): Likewise.
(parse_partial_symbols): Likewise.
(parse_symbol): Likewise.
(psymtab_to_symtab_1): Likewise.
(new_block): Likewise.
(new_psymtab): Likewise.
(mdebug_build_psymtabs): Likewise.
(add_pending): Likewise.
(elfmdebug_build_psymtabs): Likewise.
* mep-tdep.c (mep_gdbarch_init): Likewise.
* mi/mi-main.c (mi_execute_command): Likewise.
* mi/mi-parse.c (mi_parse_argv): Likewise.
* minidebug.c (lzma_open): Likewise.
* minsyms.c (terminate_minimal_symbol_table): Likewise.
* mips-linux-nat.c (mips_linux_insert_watchpoint): Likewise.
* mips-tdep.c (mips_gdbarch_init): Likewise.
* mn10300-tdep.c (mn10300_gdbarch_init): Likewise.
* msp430-tdep.c (msp430_gdbarch_init): Likewise.
* mt-tdep.c (mt_registers_info): Likewise.
* nat/aarch64-linux.c (aarch64_linux_new_thread): Likewise.
* nat/linux-btrace.c (linux_enable_bts): Likewise.
(linux_enable_pt): Likewise.
* nat/linux-osdata.c (linux_xfer_osdata_processes): Likewise.
(linux_xfer_osdata_processgroups): Likewise.
* nios2-tdep.c (nios2_gdbarch_init): Likewise.
* nto-procfs.c (procfs_meminfo): Likewise.
* objc-lang.c (start_msglist): Likewise.
(selectors_info): Likewise.
(classes_info): Likewise.
(find_methods): Likewise.
* objfiles.c (allocate_objfile): Likewise.
(update_section_map): Likewise.
* osabi.c (gdbarch_register_osabi): Likewise.
(gdbarch_register_osabi_sniffer): Likewise.
* parse.c (start_arglist): Likewise.
* ppc-linux-nat.c (hwdebug_find_thread_points_by_tid): Likewise.
(hwdebug_insert_point): Likewise.
* printcmd.c (display_command): Likewise.
(ui_printf): Likewise.
* procfs.c (create_procinfo): Likewise.
(load_syscalls): Likewise.
(proc_get_LDT_entry): Likewise.
(proc_update_threads): Likewise.
* prologue-value.c (make_pv_area): Likewise.
(pv_area_store): Likewise.
* psymtab.c (extend_psymbol_list): Likewise.
(init_psymbol_list): Likewise.
(allocate_psymtab): Likewise.
* python/py-inferior.c (add_thread_object): Likewise.
* python/py-param.c (compute_enum_values): Likewise.
* python/py-value.c (valpy_call): Likewise.
* python/py-varobj.c (py_varobj_iter_next): Likewise.
* python/python.c (ensure_python_env): Likewise.
* record-btrace.c (record_btrace_start_replaying): Likewise.
* record-full.c (record_full_reg_alloc): Likewise.
(record_full_mem_alloc): Likewise.
(record_full_end_alloc): Likewise.
(record_full_core_xfer_partial): Likewise.
* regcache.c (get_thread_arch_aspace_regcache): Likewise.
* remote-fileio.c (remote_fileio_init_fd_map): Likewise.
* remote-notif.c (remote_notif_state_allocate): Likewise.
* remote.c (demand_private_info): Likewise.
(remote_notif_stop_alloc_reply): Likewise.
(remote_enable_btrace): Likewise.
* reverse.c (save_bookmark_command): Likewise.
* rl78-tdep.c (rl78_gdbarch_init): Likewise.
* rx-tdep.c (rx_gdbarch_init): Likewise.
* s390-linux-nat.c (s390_insert_watchpoint): Likewise.
* ser-go32.c (dos_get_tty_state): Likewise.
(dos_copy_tty_state): Likewise.
* ser-mingw.c (ser_windows_open): Likewise.
(ser_console_wait_handle): Likewise.
(ser_console_get_tty_state): Likewise.
(make_pipe_state): Likewise.
(net_windows_open): Likewise.
* ser-unix.c (hardwire_get_tty_state): Likewise.
(hardwire_copy_tty_state): Likewise.
* solib-aix.c (solib_aix_new_lm_info): Likewise.
* solib-dsbt.c (dsbt_current_sos): Likewise.
(dsbt_relocate_main_executable): Likewise.
* solib-frv.c (frv_current_sos): Likewise.
(frv_relocate_main_executable): Likewise.
* solib-spu.c (spu_bfd_fopen): Likewise.
* solib-svr4.c (lm_info_read): Likewise.
(svr4_copy_library_list): Likewise.
(svr4_default_sos): Likewise.
* source.c (find_source_lines): Likewise.
(line_info): Likewise.
(add_substitute_path_rule): Likewise.
* spu-linux-nat.c (spu_bfd_open): Likewise.
* spu-tdep.c (info_spu_dma_cmdlist): Likewise.
* stabsread.c (dbx_lookup_type): Likewise.
(read_type): Likewise.
(read_member_functions): Likewise.
(read_struct_fields): Likewise.
(read_baseclasses): Likewise.
(read_args): Likewise.
(_initialize_stabsread): Likewise.
* stack.c (func_command): Likewise.
* stap-probe.c (handle_stap_probe): Likewise.
* symfile.c (addrs_section_sort): Likewise.
(addr_info_make_relative): Likewise.
(load_section_callback): Likewise.
(add_symbol_file_command): Likewise.
(init_filename_language_table): Likewise.
* symtab.c (create_filename_seen_cache): Likewise.
(sort_search_symbols_remove_dups): Likewise.
(search_symbols): Likewise.
* target.c (make_cleanup_restore_target_terminal): Likewise.
* thread.c (new_thread): Likewise.
(enable_thread_stack_temporaries): Likewise.
(make_cleanup_restore_current_thread): Likewise.
(thread_apply_all_command): Likewise.
* tic6x-tdep.c (tic6x_gdbarch_init): Likewise.
* top.c (gdb_readline_wrapper): Likewise.
* tracefile-tfile.c (tfile_trace_file_writer_new): Likewise.
* tracepoint.c (trace_find_line_command): Likewise.
(all_tracepoint_actions_and_cleanup): Likewise.
(make_cleanup_restore_current_traceframe): Likewise.
(get_uploaded_tp): Likewise.
(get_uploaded_tsv): Likewise.
* tui/tui-data.c (tui_alloc_generic_win_info): Likewise.
(tui_alloc_win_info): Likewise.
(tui_alloc_content): Likewise.
(tui_add_content_elements): Likewise.
* tui/tui-disasm.c (tui_find_disassembly_address): Likewise.
(tui_set_disassem_content): Likewise.
* ui-file.c (ui_file_new): Likewise.
(stdio_file_new): Likewise.
(tee_file_new): Likewise.
* utils.c (make_cleanup_restore_integer): Likewise.
(add_internal_problem_command): Likewise.
* v850-tdep.c (v850_gdbarch_init): Likewise.
* valops.c (find_oload_champ): Likewise.
* value.c (allocate_value_lazy): Likewise.
(record_latest_value): Likewise.
(create_internalvar): Likewise.
* varobj.c (install_variable): Likewise.
(new_variable): Likewise.
(new_root_variable): Likewise.
(cppush): Likewise.
(_initialize_varobj): Likewise.
* windows-nat.c (windows_make_so): Likewise.
* x86-nat.c (x86_add_process): Likewise.
* xcoffread.c (arrange_linetable): Likewise.
(allocate_include_entry): Likewise.
(process_linenos): Likewise.
(SYMBOL_DUP): Likewise.
(xcoff_start_psymtab): Likewise.
(xcoff_end_psymtab): Likewise.
* xml-support.c (gdb_xml_parse_attr_ulongest): Likewise.
* xtensa-tdep.c (xtensa_register_type): Likewise.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.

gdb/gdbserver/ChangeLog:

* ax.c (gdb_parse_agent_expr): Likewise.
(compile_bytecodes): Likewise.
* dll.c (loaded_dll): Likewise.
* event-loop.c (append_callback_event): Likewise.
(create_file_handler): Likewise.
(create_file_event): Likewise.
* hostio.c (handle_open): Likewise.
* inferiors.c (add_thread): Likewise.
(add_process): Likewise.
* linux-aarch64-low.c (aarch64_linux_new_process): Likewise.
* linux-arm-low.c (arm_new_process): Likewise.
(arm_new_thread): Likewise.
* linux-low.c (add_to_pid_list): Likewise.
(linux_add_process): Likewise.
(handle_extended_wait): Likewise.
(add_lwp): Likewise.
(enqueue_one_deferred_signal): Likewise.
(enqueue_pending_signal): Likewise.
(linux_resume_one_lwp_throw): Likewise.
(linux_resume_one_thread): Likewise.
(linux_read_memory): Likewise.
(linux_write_memory): Likewise.
* linux-mips-low.c (mips_linux_new_process): Likewise.
(mips_linux_new_thread): Likewise.
(mips_add_watchpoint): Likewise.
* linux-x86-low.c (initialize_low_arch): Likewise.
* lynx-low.c (lynx_add_process): Likewise.
* mem-break.c (set_raw_breakpoint_at): Likewise.
(set_breakpoint): Likewise.
(add_condition_to_breakpoint): Likewise.
(add_commands_to_breakpoint): Likewise.
(clone_agent_expr): Likewise.
(clone_one_breakpoint): Likewise.
* regcache.c (new_register_cache): Likewise.
* remote-utils.c (look_up_one_symbol): Likewise.
* server.c (queue_stop_reply): Likewise.
(start_inferior): Likewise.
(queue_stop_reply_callback): Likewise.
(handle_target_event): Likewise.
* spu-low.c (fetch_ppc_memory): Likewise.
(store_ppc_memory): Likewise.
* target.c (set_target_ops): Likewise.
* thread-db.c (thread_db_load_search): Likewise.
(try_thread_db_load_1): Likewise.
* tracepoint.c (add_tracepoint): Likewise.
(add_tracepoint_action): Likewise.
(create_trace_state_variable): Likewise.
(cmd_qtdpsrc): Likewise.
(cmd_qtro): Likewise.
(add_while_stepping_state): Likewise.
* win32-low.c (child_add_thread): Likewise.
(get_image_name): Likewise.

9 years agoFix native follow-exec-mode "new"
Don Breazeal [Wed, 26 Aug 2015 20:31:59 +0000 (13:31 -0700)] 
Fix native follow-exec-mode "new"

This patch fixes a segmentation fault in native GDB when
handling an exec event with follow-exec-mode set to "new".

The stack trace from the segfault was this:

 0  0x0000000000669594 in gdbarch_data (gdbarch=0x0, data=0x20da7a0)
    at /scratch/dbreazea/sandbox/exec-nat/binutils-gdb/gdb/gdbarch.c:4847
 1  0x00000000004d430e in get_remote_arch_state ()
    at /scratch/dbreazea/sandbox/exec-nat/binutils-gdb/gdb/remote.c:603
 2  0x00000000004d431e in get_remote_state ()
    at /scratch/dbreazea/sandbox/exec-nat/binutils-gdb/gdb/remote.c:616
 3  0x00000000004dda8b in discard_pending_stop_replies (inf=0x217c710)
    at /scratch/dbreazea/sandbox/exec-nat/binutils-gdb/gdb/remote.c:5775
 4  0x00000000006a5928 in observer_inferior_exit_notification_stub (
    data=0x4dda7a <discard_pending_stop_replies>, args_data=0x7fff12c258f0)
    at ./observer.inc:1137
 5  0x00000000006a419a in generic_observer_notify (subject=0x21dfbe0,
    args=0x7fff12c258f0)
    at /scratch/dbreazea/sandbox/exec-nat/binutils-gdb/gdb/observer.c:167
 6  0x00000000006a59ba in observer_notify_inferior_exit (inf=0x217c710)
    at ./observer.inc:1162
 7  0x00000000007981d5 in exit_inferior_1 (inftoex=0x217c710, silent=1)
    at /scratch/dbreazea/sandbox/exec-nat/binutils-gdb/gdb/inferior.c:244
 8  0x00000000007982f2 in exit_inferior_num_silent (num=1)
    at /scratch/dbreazea/sandbox/exec-nat/binutils-gdb/gdb/inferior.c:286
 9  0x000000000062f93d in follow_exec (ptid=...,
    execd_pathname=0x7fff12c259a0 "/scratch/dbreazea/sandbox/exec-nat/build/gdb/testsuite/gdb.base/execd-prog")
    at /scratch/dbreazea/sandbox/exec-nat/binutils-gdb/gdb/infrun.c:1195

In follow_exec we were creating a new inferior for the execd program,
as required by the exec mode, but we were doing it before calling
exit_inferior_num_silent on the original inferior.  So on entry to
exit_inferior_num_silent we had two inferiors with the same ptid.

In the calls made by exit_inferior_num_silent, the current inferior
is temporarily saved and replaced in order to make use of functions
that only operate on the current inferior (for example, in
do_all_continuations, called while deleting the threads of the original
inferior).  When we restored the original inferior, we just took the
first inferior that matched the ptid of the original and got the new
(wrong) one.  It hadn't been initialized yet and had no gdbarch
pointer, and GDB segfaulted.

The fix for that is to call exit_inferior_num_silent before adding the new
inferior, so that we never have two inferiors with the same ptid.  Then
exit_inferior_num_silent uses the original inferior as the current inferior
throughout, and can find a valid gdbarch pointer.

Once we have finished with the exit of the old inferior and added the
new one, we need to create a new thread for the new inferior.  In the
function that called follow_exec, handle_inferior_event_1,
ecs->event_thread now points to the thread that was deleted with the
exit of the original inferior.  To remedy this we create the new thread,
and once we return from follow_exec we reset ecs->event_thread.

Note that we are guaranteed that we can reset ecs->event_thread
safely using inferior_thread because we have set the current
inferior in follow_exec, and inferior_ptid was set by the call
to context_switch at the beginning of exec event handling.

gdb/ChangeLog:

* infrun.c (follow_exec): Re-order operations for
handling follow-exec-mode "new".
(handle_inferior_event_1): Assign ecs->event_thread
to the current thread.
* remote.c (get_remote_arch_state): Add an assertion.

9 years agoNew test for follow-exec-mode
Don Breazeal [Wed, 26 Aug 2015 20:26:36 +0000 (13:26 -0700)] 
New test for follow-exec-mode

This patch implements a new GDB test for follow-exec-mode.  Although
there is a GDB test for debugging across an exec, there is no test for
follow-exec-mode.  This test is derived from gdb.base/foll-exec.exp,
and re-uses execd-prog.c as the program to exec.

The following behavior is tested:

follow-exec-mode == "same"
 - 'next' over the exec, check for one inferior
 - 'continue' past the exec to a breakpoint, check for one inferior
 - after the exec, use a 'run' command to run the current binary
follow-exec-mode == "new"
 - 'next' over the exec, check for two inferiors
 - 'continue' past the exec to a breakpoint, check for two inferiors
 - after the exec, use a 'run' command to run the current binary
 - after the exec, use the 'inferior' command to switch inferiors,
   then use a 'run' command to run the current binary

Note that single-step breakpoints do not survive across an exec.
There has to be a breakpoint in the execed program in order for
it to stop right after the exec.

gdb/testsuite/ChangeLog:

* gdb.base/foll-exec-2.c: New test program.
* gdb.base/foll-exec-2.exp: New test.

9 years agogdb: Add Markus Metzger as btrace maintainer
Pedro Alves [Wed, 26 Aug 2015 16:50:02 +0000 (17:50 +0100)] 
gdb: Add Markus Metzger as btrace maintainer

gdb/ChangeLog:
2015-08-26  Pedro Alves  <palves@redhat.com>

* MAINTAINERS: Add Markus Metzger as btrace maintainer.

9 years agoUse stable sort for ld -r relocs
Alan Modra [Wed, 26 Aug 2015 08:02:08 +0000 (17:32 +0930)] 
Use stable sort for ld -r relocs

A number of targets emit multiple relocs at a given r_offset, and
depend on those relocs staying in their original order.

PR 18867
* elflink.c (cmp_ext32l_r_offset, cmp_ext32b_r_offset): Delete.
(cmp_ext64l_r_offset, cmp_ext64b_r_offset): Delete.
(ext32l_r_offset, ext32b_r_offset, ext64l_r_offset, ext64b_r_offset):
New functions.
(elf_link_adjust_relocs): Use an insertion sort to sort relocs.

9 years agoSelect MIPS ABi based upon abiflags rather than e_flags.
Matthew Fortune [Wed, 26 Aug 2015 13:42:56 +0000 (14:42 +0100)] 
Select MIPS ABi based upon abiflags rather than e_flags.

bfd PR ld/18401
* elfxx-mips.c (bfd_mips_isa_ext_mach): New function: Converts an
ISA value to a bfd machine number.
(bfd_mips_isa_ext): Update the ISA level and revision if
necessary.  Use mips_mach_extends_p to decide if the ISA extension
needs to be set.
(_bfd_mips_elf_merge_private_bfd_data): Allow the ISA extension to
be inferred from the ABI setting.  Set the ISA level from the
maximum of the incoming and outgoing ISA levels.

tests
* ld-mips-elf/mips-elf-flags.exp: Add more ISA conflict tests.

9 years agoFallout from "Allow symbol and label names to be enclosed in double quotes"
Alan Modra [Wed, 26 Aug 2015 13:25:41 +0000 (22:55 +0930)] 
Fallout from "Allow symbol and label names to be enclosed in double quotes"

PR gas/18581
* config/tc-mn10200.c (md_assemble <mdr>): Move restore_line_pointer
call to where input line used to be restored.
* config/tc-mn10300.c (md_assemble <usp>): Remove redundant input
line restore.
* config/tc-tilepro.c (parse_reg_expression): Add regname var.

9 years agoAdd asprintf to the list of functions whose decls are checked at configure time.
Nick Clifton [Wed, 26 Aug 2015 09:56:26 +0000 (10:56 +0100)] 
Add asprintf to the list of functions whose decls are checked at configure time.

PR gas/18842
* configure.ac (AS_CHECK_DECLS): Add asprintf.
* configure: Regenerate.
* config.in: Regenerate.

9 years agoFix problem where script specified both address and region for a section.
Cary Coutant [Wed, 26 Aug 2015 07:03:04 +0000 (00:03 -0700)] 
Fix problem where script specified both address and region for a section.

If a script specifies both address and region for an output section
declaration, gold ignores the region specification. This can lead to
bogus "moves backward" errors. This patch fixes gold so that if a
section specifies both address and region, it will place the section
at the specified address in the region, and update the location counter
within the region.

gold/
PR gold/18847
* script-sections.cc (Memory_region::set_address): New method.
(Script_sections::find_memory_region): Add explicit_only parameter.
(Output_section_definition::set_section_addresses): Handle case where
script specifies both address and vma region.
* script-sections.h (Script_sections::find_memory_region): Add
explicit_only parameter.

9 years agoFix --no-as-needed when shared library is listed twice on the command line.
Cary Coutant [Fri, 21 Aug 2015 19:32:33 +0000 (12:32 -0700)] 
Fix --no-as-needed when shared library is listed twice on the command line.

When a shared library is listed twice on the command line, the linker
ignores the second mention. If the first mention is in the scope of
an --as-needed option, and the second one is under the scope of a
--no-as-needed option, the --no-as-needed should take effect, but
doesn't.  This patch keeps track of the objects we've already seen,
and updates the --as-needed flag so that if a shared object is ever
seen with --no-as-needed, it will be marked as such.

gold/
PR gold/18859
* object.cc (Input_objects::add_object): Store objects in a map,
indexed by soname; update as-needed flag when necessary.
* object.h (Object::clear_as_needed): New method.
(Input_objects::so_names_): Change from set to map.

9 years agoFix internal error in gold when script uses section address in assignment.
Cary Coutant [Wed, 26 Aug 2015 00:41:19 +0000 (17:41 -0700)] 
Fix internal error in gold when script uses section address in assignment.

When processing assignment expressions in a linker script, gold processes
absolute assignments early, but when one of those assignments involves the
address of a section that has not yet been finalized, we get an internal
error in address. This patch fixes the problem by gracefully returning
from expression evaluation even if the address is not yet valid, and
deferring the assignment in such a case.

gold/
PR gold/14746
* expression.cc (Expression::Expression_eval_info): Add
is_valid_pointer field.
(Expression::eval_maybe_dot): Add is_valid_pointer parameter.
Adjust all callers.
(Addr_expression::value_from_output_section): Check whether address
is valid.
* script.cc (Symbol_assignment::set_if_absolute): Defer assignment
if evaluation failed due to address that is not yet valid.
* script.h: (Expression::eval_maybe_dot): Add is_valid_pointer
parameter.

9 years agoFix regression introduced by fix for PR 18703.
Cary Coutant [Wed, 26 Aug 2015 00:53:53 +0000 (17:53 -0700)] 
Fix regression introduced by fix for PR 18703.

When a user object overrides a versioned definition in a shared object,
it's possible to trigger an internal error because the versioned
definition we saw didn't override the unversioned definition. This
was introduced by the fix for PR 18703. This patch fixes the problem
by reordering the tests so that we do not check ret->is_default()
until we're confident that the symbol is in fact versioned.

gold/
PR gold/18866
PR gold/18703
* symtab.cc (Symbol_table): Reorder conditions to avoid internal error.

9 years agoAutomatic date update in version.in
GDB Administrator [Wed, 26 Aug 2015 00:00:07 +0000 (00:00 +0000)] 
Automatic date update in version.in

9 years agoReplace assertions with warning messages about ELF binaries containing multiple symbo...
Nick Clifton [Tue, 25 Aug 2015 16:48:20 +0000 (17:48 +0100)] 
Replace assertions with warning messages about ELF binaries containing multiple symbol tables.

PR binutils/18854
* elf.c (bfd_section_from_shdr): Replace assertions with warnings
about multiple symbol tables.

9 years agoUpdate MIPS tests for test failures on some configurations.
Simon Dardis [Tue, 25 Aug 2015 16:04:51 +0000 (17:04 +0100)] 
Update MIPS tests for test failures on some configurations.

* gas/mips/micromips32-move.d: Update expected disassembly.
* gas/mips/move.d: Likewise.
* gas/mips/move.s: Fix for some MIPS configurations.

9 years agoremote: allow aborting long operations (e.g., file transfers)
Pedro Alves [Tue, 25 Aug 2015 15:12:11 +0000 (16:12 +0100)] 
remote: allow aborting long operations (e.g., file transfers)

Currently, when remote debugging, if you type Ctrl-C just while the
target stopped for an internal event, and GDB is busy doing something
that takes a while (e.g., fetching chunks of a shared library off of
the target, with vFile, to process ELF headers and debug info), the
Ctrl-C is lost.

The patch hooks up the QUIT macro to a new target method that lets the
target react to the double-Ctrl-C before the event loop is reached,
which allows reacting to a double-Ctrl-C even when GDB is busy doing
some long operation and not waiting for a stop reply.  That end result
is:

 (gdb) c
 Continuing.
 ^C
 ^C
 Interrupted while waiting for the program.
 Give up waiting? (y or n) y
 Quit
 (gdb) info threads
   Id   Target Id         Frame
 * 1    Thread 11673      0x00007ffff7deb240 in _dl_debug_state () from target:/lib64/ld-linux-x86-64.so.2
 (gdb)

If, however, GDB is waiting for a stop reply (because the target has
been resumed, with e.g., vCont;c), but the target isn't responding, we
now get:

 (gdb) c
 Continuing.
 ^C
 ^C
 The target is not responding to interrupt requests.
 Stop debugging it? (y or n) y
 Disconnected from target.
 (gdb) info threads
 No threads.

This offers to disconnect, because when we're waiting for a stop
reply, there's nothing else we can send the target other than an
interrupt request.  And if that doesn't work, there's nothing else we
can do.

The Ctrl-C is presently lost because until we get to a user-visible
stop, the SIGINT handler that is installed is the one that forwards
the interrupt to the remote side, with the \003 "packet" [1].  But,
gdbserver ignores an interrupt request if the program is stopped.
Still, even if it didn't, the server can only report back a
stop-because-of-SIGINT when the program is next resumed.  And it may
take a while to actually re-resume the target.

[1] - In the old sync days, the remote target would react to a
double-Ctrl-C by asking users whether they wanted to give up waiting
and disconnect.  The code is still there, but it it isn't reacheable
on most hosts, which support serial connections in async mode
(probably only DJGPP doesn't).  Even then, in sync mode, remote.c's
SIGINT handler is only installed while the target is resumed, and is
removed as soon as the target sends back a stop reply.  That means
that a Ctrl-C just while GDB is processing an internal event can end
up with an odd "Quit" at the prompt instead of "Program stopped by
SIGINT".  In contrast, in async mode, remote.c's SIGINT handler is set
up as long as target_terminal_inferior or
target_terminal_ours_for_output are in effect (IOW, until we get a
user-visible stop and call target_terminal_ours), so the user
shouldn't get back a spurious Quit.  However, it's still desirable to
be able to interrupt a long-running GDB operation, if GDB takes a
while to re-resume the target or get back to the event loop.

Tested on x86_64 Fedora 20.

gdb/ChangeLog:
2015-08-24  Pedro Alves  <palves@redhat.com>

* defs.h (maybe_quit): Declare.
(QUIT): Now calls maybe_quit.
* event-loop.c (clear_async_signal_handler)
(async_signal_handler_is_marked): New functions.
* event-loop.h (async_signal_handler_is_marked)
(clear_async_signal_handler): New declarations.
* remote.c (remote_check_pending_interrupt): New function.
(interrupt_query): Use make_cleanup_restore_target_terminal.  No
longer check whether the target is async.  If waiting for a stop
reply, and a Ctrl-C as been sent to the target, offer to
disconnect, and throw TARGET_CLOSE_ERROR instead of a quit.
Otherwise do not disconnect and throw a quit.
(_initialize_remote): Install remote_check_pending_interrupt as
to_check_pending_interrupt.
* target.c (target_check_pending_interrupt): New function.
* target.h (struct target_ops) <to_check_pending_interrupt>: New
field.
(target_check_pending_interrupt): New declaration.
* utils.c (maybe_quit): New function.
* target-delegates.c: Regenerate.

9 years agoSupport for the sparc %pmcdper privileged register.
Jose E. Marchesi [Tue, 25 Aug 2015 15:16:34 +0000 (17:16 +0200)] 
Support for the sparc %pmcdper privileged register.

opcodes/ChangeLog:

2015-08-25  Jose E. Marchesi  <jose.marchesi@oracle.com>

* sparc-dis.c (print_insn_sparc): Handle the privileged register
%pmcdper.

gas/ChangeLog:

2015-08-25  Jose E. Marchesi  <jose.marchesi@oracle.com>

* config/tc-sparc.c (priv_reg_table): New privileged register
%pmcdper.

gas/testsuite/ChangeLog:

2015-08-25  Jose E. Marchesi  <jose.marchesi@oracle.com>

* gas/sparc/wrpr.s: Test writing to the privileged %pmcdper
register.
* gas/sparc/wrpr.d: ...and the expected result.
* gas/sparc/rdpr.s: Test reading from the privileged %pmcdper
register.
* gas/sparc/rdpr.d: ...and the expected result.

9 years agoPrint tid in debug output of debug_reg_change_callback
Yao Qi [Tue, 25 Aug 2015 13:08:45 +0000 (14:08 +0100)] 
Print tid in debug output of debug_reg_change_callback

In debug_reg_change_callback, we change debug registers of each LWP.
It makes more sense to print LWP's pid rather than group leader's pid.

gdb:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* nat/aarch64-linux-hw-point.c (debug_reg_change_callback):
Rename local variable pid to tid, and get lwpid of lwp.  Update
debug output.

9 years agoDWARF: handle non-local references in nested functions
Pierre-Marie de Rodat [Thu, 5 Feb 2015 16:00:06 +0000 (17:00 +0100)] 
DWARF: handle non-local references in nested functions

GDB's current behavior when dealing with non-local references in the
context of nested fuctions is approximative:

  - code using valops.c:value_of_variable read the first available stack
    frame that holds the corresponding variable (whereas there can be
    multiple candidates for this);

  - code directly relying on read_var_value will instead read non-local
    variables in frames where they are not even defined.

This change adds the necessary context to symbol reads (to get the block
they belong to) and to blocks (the static link property, if any) so that
GDB can make the proper decisions when dealing with non-local varibale
references.

gdb/ChangeLog:

* ada-lang.c (ada_read_var_value): Add a var_block argument
and pass it to default_read_var_value.
* block.c (block_static_link): New accessor.
* block.h (block_static_link): Declare it.
* buildsym.c (finish_block_internal): Add a static_link
argument.  If there is a static link, associate it to the new
block.
(finish_block): Add a static link argument and pass it to
finish_block_internal.
(end_symtab_get_static_block): Update calls to finish_block and
to finish_block_internal.
(end_symtab_with_blockvector): Update call to
finish_block_internal.
* buildsym.h: Forward-declare struct dynamic_prop.
(struct context_stack): Add a static_link field.
(finish_block): Add a static link argument.
* c-exp.y: Remove an obsolete comment (evaluation of variables
already start from the selected frame, and now they climb *up*
the call stack) and propagate the block information to the
produced expression.
* d-exp.y: Likewise.
* f-exp.y: Likewise.
* go-exp.y: Likewise.
* jv-exp.y: Likewise.
* m2-exp.y: Likewise.
* p-exp.y: Likewise.
* coffread.c (coff_symtab_read): Update calls to finish_block.
* dbxread.c (process_one_symbol): Likewise.
* xcoffread.c (read_xcoff_symtab): Likewise.
* compile/compile-c-symbols.c (convert_one_symbol): Promote the
"sym" parameter to struct block_symbol, update its uses and pass
its block to calls to read_var_value.
(convert_symbol_sym): Update the calls to convert_one_symbol.
* compile/compile-loc2c.c (do_compile_dwarf_expr_to_c): Update
call to read_var_value.
* dwarf2loc.c (block_op_get_frame_base): New.
(dwarf2_block_frame_base_locexpr_funcs): Implement the
get_frame_base method.
(dwarf2_block_frame_base_loclist_funcs): Likewise.
(dwarf2locexpr_baton_eval): Add a frame argument and use it
instead of the selected frame in order to evaluate the
expression.
(dwarf2_evaluate_property): Add a frame argument.  Update call
to dwarf2_locexpr_baton_eval to provide a frame in available and
to handle the absence of address stack.
* dwarf2loc.h (dwarf2_evaluate_property): Add a frame argument.
* dwarf2read.c (attr_to_dynamic_prop): Add a forward
declaration.
(read_func_scope): Record any available static link description.
Update call to finish_block.
(read_lexical_block_scope): Update call to finish_block.
* findvar.c (follow_static_link): New.
(get_hosting_frame): New.
(default_read_var_value): Add a var_block argument.  Use
get_hosting_frame to handle non-local references.
(read_var_value): Add a var_block argument and pass it to the
LA_READ_VAR_VALUE method.
* gdbtypes.c (resolve_dynamic_range): Update calls to
dwarf2_evaluate_property.
(resolve_dynamic_type_internal): Likewise.
* guile/scm-frame.c (gdbscm_frame_read_var): Update call to
read_var_value, passing it the block coming from symbol lookup.
* guile/scm-symbol.c (gdbscm_symbol_value): Update call to
read_var_value (TODO).
* infcmd.c (finish_command_continuation): Update call to
read_var_value, passing it the block coming from symbol lookup.
* infrun.c (insert_exception_resume_breakpoint): Likewise.
* language.h (struct language_defn): Add a var_block argument to
the LA_READ_VAR_VALUE method.
* objfiles.c (struct static_link_htab_entry): New.
(static_link_htab_entry_hash): New.
(static_link_htab_entry_eq): New.
(objfile_register_static_link): New.
(objfile_lookup_static_link): New.
(free_objfile): Free the STATIC_LINKS hashed map if needed.
* objfiles.h: Include hashtab.h.
(struct objfile): Add a static_links field.
(objfile_register_static_link): New.
(objfile_lookup_static_link): New.
* printcmd.c (print_variable_and_value): Update call to
read_var_value.
* python/py-finishbreakpoint.c (bpfinishpy_init): Likewise.
* python/py-frame.c (frapy_read_var): Update call to
read_var_value, passing it the block coming from symbol lookup.
* python/py-framefilter.c (extract_sym): Add a sym_block
parameter and set the pointed value to NULL (TODO).
(enumerate_args): Update call to extract_sym.
(enumerate_locals): Update calls to extract_sym and to
read_var_value.
* python/py-symbol.c (sympy_value): Update call to
read_var_value (TODO).
* stack.c (read_frame_local): Update call to read_var_value.
(read_frame_arg): Likewise.
(return_command): Likewise.
* symtab.h (struct symbol_block_ops): Add a get_frame_base
method.
(struct symbol): Add a block field.
(SYMBOL_BLOCK): New accessor.
* valops.c (value_of_variable): Remove frame/block handling and
pass the block argument to read_var_value, which does this job
now.
(value_struct_elt_for_reference): Update calls to
read_var_value.
(value_of_this): Pass the block found to read_var_value.
* value.h (read_var_value): Add a var_block argument.
(default_read_var_value): Likewise.

gdb/testsuite/ChangeLog:

* gdb.base/nested-subp1.exp: New file.
* gdb.base/nested-subp1.c: New file.
* gdb.base/nested-subp2.exp: New file.
* gdb.base/nested-subp2.c: New file.
* gdb.base/nested-subp3.exp: New file.
* gdb.base/nested-subp3.c: New file.

9 years ago[AArch64] Fix a typo in the comment for BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
Renlin Li [Tue, 25 Aug 2015 11:37:21 +0000 (12:37 +0100)] 
[AArch64] Fix a typo in the comment for BFD_RELOC_AARCH64_LD64_GOT_LO12_NC

2015-08-25  Renlin Li  <renlin.li@arm.com>

bfd/
  * reloc.c (BFD_RELOC_AARCH64_LD64_GOTOFF_LO15): Use LP64 instead of
  ILP64.
  * bfd-in2.h: Regenerate.

9 years agoMove aarch64_linux_new_thread to nat/aarch64-linux.c
Yao Qi [Tue, 25 Aug 2015 10:38:29 +0000 (11:38 +0100)] 
Move aarch64_linux_new_thread to nat/aarch64-linux.c

This patch moves aarch64_linux_new_thread in GDB and GDBserver to
nat/aarch64-linux.c.

gdb:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* aarch64-linux-nat.c (aarch64_linux_new_thread): Move it to ...
* nat/aarch64-linux.c (aarch64_linux_new_thread): ... here.
* nat/aarch64-linux.h (aarch64_linux_new_thread): Declare.

gdb/gdbserver:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* linux-aarch64-low.c (aarch64_linux_new_thread): Remove.

9 years agoMove aarch64_linux_prepare_to_resume to nat/aarch64-linux.c
Yao Qi [Tue, 25 Aug 2015 10:38:29 +0000 (11:38 +0100)] 
Move aarch64_linux_prepare_to_resume to nat/aarch64-linux.c

gdb:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* Makefile.in (aarch64-liunx.o): New rule.
(HFILES_NO_SRCDIR): Add aarch64-linux.h.
* config/aarch64/linux.mh (NAT_FILE): Add aarch64-linux.o.
* aarch64-linux-nat.c: Include nat/aarch64-linux.h.
* aarch64-linux-nat.c (aarch64_get_debug_reg_state): Make it
extern.
(aarch64_linux_prepare_to_resume): Move it nat/aarch64-linux.c.
* nat/aarch64-linux-hw-point.h (aarch64_debug_reg_state): Declare
* nat/aarch64-linux.c: New file.
* nat/aarch64-linux.h: New file.

gdb/gdbserver:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* Makefile.in (aarch64-linux.o): New rule.
* configure.srv (aarch64*-*-linux*): Append aarch64-linux.o to
srv_tgtobj.
* linux-aarch64-low.c: Include nat/aarch64-linux.h.
(aarch64_init_debug_reg_state): Make it extern.
(aarch64_linux_prepare_to_resume): Remove.

9 years agoMake aarch64_linux_prepare_to_resume the same on GDB and GDBserver
Yao Qi [Tue, 25 Aug 2015 10:38:29 +0000 (11:38 +0100)] 
Make aarch64_linux_prepare_to_resume the same on GDB and GDBserver

gdb:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* aarch64-linux-nat.c (aarch64_linux_prepare_to_resume): Use
lwp_arch_private_info and ptid_of_lwp.

gdb/gdbserver:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* linux-aarch64-low.c (aarch64_linux_prepare_to_resume): Use
lwp_arch_private_info and ptid_of_lwp.

9 years agoAdd pid argument in aarch64_get_debug_reg_state
Yao Qi [Tue, 25 Aug 2015 10:38:29 +0000 (11:38 +0100)] 
Add pid argument in aarch64_get_debug_reg_state

This patch addes argument pid in aarch64_get_debug_reg_state, so that
its interface is the same on both GDB and GDBserver.

gdb/gdbserver:

2015-018-25  Yao Qi  <yao.qi@linaro.org>

* linux-aarch64-low.c (aarch64_get_debug_reg_state): Add argument pid.
Find proc_info by find_process_pid.  All callers updated.

9 years agoMove debug_reg_change_callback and aarch64_notify_debug_reg_change to nat/aarch64...
Yao Qi [Tue, 25 Aug 2015 10:38:29 +0000 (11:38 +0100)] 
Move debug_reg_change_callback and aarch64_notify_debug_reg_change to nat/aarch64-linux-hw-point.c

gdb:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* aarch64-linux-nat.c (struct arch64_dr_update_callback_param):
Move it to nat/aarch64-linux-hw-point.c.
(debug_reg_change_callback): Likewise.
(aarch64_notify_debug_reg_change): :Likewise.
* nat/aarch64-linux-hw-point.c: Include nat/linux-nat.h.
(aarch64_dr_update_callback_param): New.
(debug_reg_change_callback): New function.
(aarch64_notify_debug_reg_change): Likewise.
* nat/aarch64-linux-hw-point.h (aarch64_notify_debug_reg_change):
Remove the declaration.

gdb/gdbserver:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* linux-aarch64-low.c (struct arch64_dr_update_callback_param):
Remove.
(debug_reg_change_callback): Remove.
(aarch64_notify_debug_reg_change): Remove.

9 years agoMake debug_reg_change_callback the same on GDB and GDBserver
Yao Qi [Tue, 25 Aug 2015 10:38:29 +0000 (11:38 +0100)] 
Make debug_reg_change_callback the same on GDB and GDBserver

This patch makes function debug_reg_change_callback in GDB and GDBserver
look the same, so that the following patch can move them to
nat/aarch64-linux-hw-point.c.

gdb:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* aarch64-linux-nat.c (debug_reg_change_callback): Use
ptid_of_lwp to get ptid of lwp.

gdb/gdbserver:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* linux-aarch64-low.c (debug_reg_change_callback): Use
ptid_of_lwp to get ptid of lwp.

9 years agoMake aarch64_notify_debug_reg_change the same on GDB and GDBserver
Yao Qi [Tue, 25 Aug 2015 10:38:29 +0000 (11:38 +0100)] 
Make aarch64_notify_debug_reg_change the same on GDB and GDBserver

gdb:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* aarch64-linux-nat.c (aarch64_notify_debug_reg_change):
Call current_lwp_ptid.

gdb/gdbserver:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* linux-aarch64-low.c (aarch64_notify_debug_reg_change):
Call current_lwp_ptid.

9 years agoUse debug_printf in debug_reg_change_callback
Yao Qi [Tue, 25 Aug 2015 10:38:29 +0000 (11:38 +0100)] 
Use debug_printf in debug_reg_change_callback

gdb:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* aarch64-linux-nat.c (debug_reg_change_callback): Use
debug_printf.

gdb/gdbserver:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* linux-aarch64-low.c (debug_reg_change_callback): Use
debug_printf.

9 years agoUse phex debug_reg_change_callback
Yao Qi [Tue, 25 Aug 2015 10:38:28 +0000 (11:38 +0100)] 
Use phex debug_reg_change_callback

This patch is to use phex in debug_reg_change_callback to make it
identical in GDB and GDBserver.

gdb/gdbserver:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* linux-aarch64-low.c (debug_reg_change_callback): Use phex.

9 years agoGet pid rather than lwpid
Yao Qi [Tue, 25 Aug 2015 10:38:28 +0000 (11:38 +0100)] 
Get pid rather than lwpid

We print PID rather than LWPID in the debug output, so we need call
ptid_get_pid in debug_reg_change_callback.

gdb:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* aarch64-linux-nat.c (debug_reg_change_callback): Call
ptid_get_pid rather than ptid_get_lwp.

9 years agoRemove some comments in debug_reg_change_callback
Yao Qi [Tue, 25 Aug 2015 10:38:28 +0000 (11:38 +0100)] 
Remove some comments in debug_reg_change_callback

gdb/gdbserver:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* linux-aarch64-low.c (debug_reg_change_callback): Remove comments.

9 years agoRe-indent the code
Yao Qi [Tue, 25 Aug 2015 10:38:28 +0000 (11:38 +0100)] 
Re-indent the code

gdb/gdbserver:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* linux-aarch64-low.c (debug_reg_change_callback): Re-indent
the code.

9 years ago[gdbserver] Use iterate_over_lwps in aarch64_notify_debug_reg_change
Yao Qi [Tue, 25 Aug 2015 10:38:28 +0000 (11:38 +0100)] 
[gdbserver] Use iterate_over_lwps in aarch64_notify_debug_reg_change

This patch makes more bits on aarch64 watchpoint between GDB and GDBserver
look similar.

gdb/gdbserver:

2015-08-25  Yao Qi  <yao.qi@linaro.org>

* linux-aarch64-low.c (aarch64_dr_update_callback_param) <pid>:
Remove.
(debug_reg_change_callback): Remove argument entry and add argument
lwp.  Remove local variable thread.  Don't print thread id in the
debugging output.  Don't check whether pid of thread equals to pid.
(aarch64_notify_debug_reg_change): Don't set param.pid.  Call
iterate_over_lwps instead find_inferior.

9 years agoAutomatic date update in version.in
GDB Administrator [Tue, 25 Aug 2015 00:00:08 +0000 (00:00 +0000)] 
Automatic date update in version.in

9 years agogdbserver crashes when multiprocess extensions aren't supported
Pedro Alves [Mon, 24 Aug 2015 18:58:31 +0000 (19:58 +0100)] 
gdbserver crashes when multiprocess extensions aren't supported

Ref: https://sourceware.org/ml/gdb-patches/2015-08/msg00675.html

If multiprocess extensions are off (because specific gdbserver port
doesn't support them), then when gdbserver doesn't have a thread
selected yet, and GDB sends Hg packet to select one, gdbserver
crashes.  That's because extracting the desired thread id out of the
packet that GDB sent depends on the current thread to fill in the
missing process id ...  Fix this by getting the process id from the
first (and only) process in the processes list instead.

The GNU/Linux port doesn't trip on this because it always runs with
multiprocess extensions enabled.  To make it easier to catch such
regressions going forward, this commit also adds a new smoke test that
spawns gdbserver, connects to it and runs to main with the
multiprocess extensions force-disabled.

gdb/gdbserver/ChangeLog:
2015-08-24  Pedro Alves  <palves@redhat.com>

* inferiors.c (get_first_process): New function.
* inferiors.h (get_first_process): New declaration.
* remote-utils.c (read_ptid): Default to the first process in the
list, instead of to the current thread's process.

gdb/testsuite/ChangeLog:
2015-08-24  Pedro Alves  <palves@redhat.com>

* gdb.server/connect-without-multi-process.c: New file.
* gdb.server/connect-without-multi-process.exp: New file.

9 years agoAdd "set remote multiprocess-extensions-packet" command
Pedro Alves [Mon, 24 Aug 2015 18:58:31 +0000 (19:58 +0100)] 
Add "set remote multiprocess-extensions-packet" command

Being able to force-disable the RSP multiprocess extensions is useful
for testing.

gdb/ChangeLog:
2015-08-24  Pedro Alves  <palves@redhat.com>

* NEWS (New commands): Mention set/show remote
multiprocess-extensions-packet.
* remote.c (remote_query_supported): Only tell the server to use
the multiprocess extensions if the user hasn't force-disabled them
with "set remote multiprocess-extensions-packet off".

gdb/doc/ChangeLog:
2015-08-24  Pedro Alves  <palves@redhat.com>

* gdb.texinfo (Remote Configuration): Document the "set/show
remote multiprocess-extensions-packet" commands.

9 years agoUpdate gnulib to current upstream master
Pedro Alves [Mon, 24 Aug 2015 17:50:00 +0000 (18:50 +0100)] 
Update gnulib to current upstream master

2015-08-24  Pedro Alves  <palves@redhat.com>

* gnulib/update-gnulib.sh (GNULIB_COMMIT_SHA1): Set to
1029a8112290f6eee9d7878a391c49db42c999bd.
* gnulib/configure, gnulib/config.in, gnulib/aclocal.m4:
Regenerate.
* gnulib/import/Makefile.am: Update.
* gnulib/import/Makefile.in: Update.
* gnulib/import/alloca.in.h: Update.
* gnulib/import/basename-lgpl.c: Update.
* gnulib/import/canonicalize-lgpl.c: Update.
* gnulib/import/config.charset: Update.
* gnulib/import/dirent.in.h: Update.
* gnulib/import/dirfd.c: Update.
* gnulib/import/dirname-lgpl.c: Update.
* gnulib/import/dirname.h: Update.
* gnulib/import/dosname.h: Update.
* gnulib/import/errno.in.h: Update.
* gnulib/import/extra/snippet/arg-nonnull.h: Update.
* gnulib/import/extra/snippet/c++defs.h: Update.
* gnulib/import/extra/snippet/warn-on-use.h: Update.
* gnulib/import/extra/update-copyright: Update.
* gnulib/import/float+.h: Update.
* gnulib/import/float.c: Update.
* gnulib/import/float.in.h: Update.
* gnulib/import/fnmatch.c: Update.
* gnulib/import/fnmatch.in.h: Update.
* gnulib/import/fnmatch_loop.c: Update.
* gnulib/import/fpucw.h: Update.
* gnulib/import/frexp.c: Update.
* gnulib/import/frexpl.c: Update.
* gnulib/import/gettimeofday.c: Update.
* gnulib/import/inttypes.in.h: Update.
* gnulib/import/isnan.c: Update.
* gnulib/import/isnand-nolibm.h: Update.
* gnulib/import/isnand.c: Update.
* gnulib/import/isnanl-nolibm.h: Update.
* gnulib/import/isnanl.c: Update.
* gnulib/import/itold.c: Update.
* gnulib/import/localcharset.c: Update.
* gnulib/import/localcharset.h: Update.
* gnulib/import/lstat.c: Update.
* gnulib/import/m4/00gnulib.m4: Update.
* gnulib/import/m4/absolute-header.m4: Update.
* gnulib/import/m4/alloca.m4: Update.
* gnulib/import/m4/canonicalize.m4: Update.
* gnulib/import/m4/codeset.m4: Update.
* gnulib/import/m4/configmake.m4: Update.
* gnulib/import/m4/dirent_h.m4: Update.
* gnulib/import/m4/dirfd.m4: Update.
* gnulib/import/m4/dirname.m4: Update.
* gnulib/import/m4/double-slash-root.m4: Update.
* gnulib/import/m4/eealloc.m4: Update.
* gnulib/import/m4/errno_h.m4: Update.
* gnulib/import/m4/exponentd.m4: Update.
* gnulib/import/m4/exponentl.m4: Update.
* gnulib/import/m4/extensions.m4: Update.
* gnulib/import/m4/extern-inline.m4: Update.
* gnulib/import/m4/fcntl-o.m4: Update.
* gnulib/import/m4/float_h.m4: Update.
* gnulib/import/m4/fnmatch.m4: Update.
* gnulib/import/m4/fpieee.m4: Update.
* gnulib/import/m4/frexp.m4: Update.
* gnulib/import/m4/frexpl.m4: Update.
* gnulib/import/m4/gettimeofday.m4: Update.
* gnulib/import/m4/glibc21.m4: Update.
* gnulib/import/m4/gnulib-cache.m4: Update.
* gnulib/import/m4/gnulib-common.m4: Update.
* gnulib/import/m4/gnulib-comp.m4: Update.
* gnulib/import/m4/gnulib-tool.m4: Update.
* gnulib/import/m4/include_next.m4: Update.
* gnulib/import/m4/inttypes-pri.m4: Update.
* gnulib/import/m4/inttypes.m4: Update.
* gnulib/import/m4/isnand.m4: Update.
* gnulib/import/m4/isnanl.m4: Update.
* gnulib/import/m4/largefile.m4: Update.
* gnulib/import/m4/localcharset.m4: Update.
* gnulib/import/m4/locale-fr.m4: Update.
* gnulib/import/m4/locale-ja.m4: Update.
* gnulib/import/m4/locale-zh.m4: Update.
* gnulib/import/m4/longlong.m4: Update.
* gnulib/import/m4/lstat.m4: Update.
* gnulib/import/m4/malloc.m4: Update.
* gnulib/import/m4/malloca.m4: Update.
* gnulib/import/m4/math_h.m4: Update.
* gnulib/import/m4/mbrtowc.m4: Update.
* gnulib/import/m4/mbsinit.m4: Update.
* gnulib/import/m4/mbsrtowcs.m4: Update.
* gnulib/import/m4/mbstate_t.m4: Update.
* gnulib/import/m4/memchr.m4: Update.
* gnulib/import/m4/memmem.m4: Update.
* gnulib/import/m4/mmap-anon.m4: Update.
* gnulib/import/m4/multiarch.m4: Update.
* gnulib/import/m4/nocrash.m4: Update.
* gnulib/import/m4/off_t.m4: Update.
* gnulib/import/m4/pathmax.m4: Update.
* gnulib/import/m4/readlink.m4: Update.
* gnulib/import/m4/rename.m4: Update.
* gnulib/import/m4/rmdir.m4: Update.
* gnulib/import/m4/ssize_t.m4: Update.
* gnulib/import/m4/stat.m4: Update.
* gnulib/import/m4/stdbool.m4: Update.
* gnulib/import/m4/stddef_h.m4: Update.
* gnulib/import/m4/stdint.m4: Update.
* gnulib/import/m4/stdio_h.m4: Update.
* gnulib/import/m4/stdlib_h.m4: Update.
* gnulib/import/m4/string_h.m4: Update.
* gnulib/import/m4/strstr.m4: Update.
* gnulib/import/m4/strtok_r.m4: Update.
* gnulib/import/m4/sys_socket_h.m4: Update.
* gnulib/import/m4/sys_stat_h.m4: Update.
* gnulib/import/m4/sys_time_h.m4: Update.
* gnulib/import/m4/sys_types_h.m4: Update.
* gnulib/import/m4/time_h.m4: Update.
* gnulib/import/m4/unistd_h.m4: Update.
* gnulib/import/m4/warn-on-use.m4: Update.
* gnulib/import/m4/wchar_h.m4: Update.
* gnulib/import/m4/wchar_t.m4: Update.
* gnulib/import/m4/wctype_h.m4: Update.
* gnulib/import/m4/wint_t.m4: Update.
* gnulib/import/malloc.c: Update.
* gnulib/import/malloca.c: Update.
* gnulib/import/malloca.h: Update.
* gnulib/import/math.in.h: Update.
* gnulib/import/mbrtowc.c: Update.
* gnulib/import/mbsinit.c: Update.
* gnulib/import/mbsrtowcs-impl.h: Update.
* gnulib/import/mbsrtowcs-state.c: Update.
* gnulib/import/mbsrtowcs.c: Update.
* gnulib/import/memchr.c: Update.
* gnulib/import/memmem.c: Update.
* gnulib/import/pathmax.h: Update.
* gnulib/import/readlink.c: Update.
* gnulib/import/ref-add.sin: Update.
* gnulib/import/ref-del.sin: Update.
* gnulib/import/rename.c: Update.
* gnulib/import/rmdir.c: Update.
* gnulib/import/same-inode.h: Update.
* gnulib/import/stat.c: Update.
* gnulib/import/stdbool.in.h: Update.
* gnulib/import/stddef.in.h: Update.
* gnulib/import/stdint.in.h: Update.
* gnulib/import/stdio.c: Update.
* gnulib/import/stdio.in.h: Update.
* gnulib/import/stdlib.in.h: Update.
* gnulib/import/str-two-way.h: Update.
* gnulib/import/streq.h: Update.
* gnulib/import/string.in.h: Update.
* gnulib/import/stripslash.c: Update.
* gnulib/import/strnlen1.c: Update.
* gnulib/import/strnlen1.h: Update.
* gnulib/import/strstr.c: Update.
* gnulib/import/strtok_r.c: Update.
* gnulib/import/sys_stat.in.h: Update.
* gnulib/import/sys_time.in.h: Update.
* gnulib/import/sys_types.in.h: Update.
* gnulib/import/time.in.h: Update.
* gnulib/import/unistd.in.h: Update.
* gnulib/import/verify.h: Update.
* gnulib/import/wchar.in.h: Update.
* gnulib/import/wctype.in.h: Update.
* gnulib/import/gettimeofday.c: New file.
* gnulib/import/m4/absolute-header.m4: New file.
* gnulib/import/m4/gettimeofday.m4: New file.
* gnulib/import/m4/sys_socket_h.m4: New file.
* gnulib/import/m4/sys_time_h.m4: New file.
* gnulib/import/stdio.c: Delete file.
* gnulib/import/sys_time.in.h: New file.

9 years agoPrepare for gnulib update
Pedro Alves [Mon, 24 Aug 2015 17:50:55 +0000 (18:50 +0100)] 
Prepare for gnulib update

After the last gnulib import (Dec 2012), gnulib upstream started
replacing mingw's 'struct timeval' with a version with 64-bit time_t,
for POSIX compliance:

 commit f8e84098084b3b53bc6943a5542af1f607ffd477
 Author: Bruno Haible <bruno@clisp.org>
 Date:   Sat Jan 28 18:12:10 2012 +0100
     sys_time: Override 'struct timeval' on some native Windows platforms.

See:

 https://lists.gnu.org/archive/html/bug-gnulib/2012-01/msg00372.html

However, that results in conflicts with native Winsock2's 'select':

select()'s argument
http://sourceforge.net/p/mingw-w64/mailman/message/29610438/

... and libiberty's timeval-utils.h timeval_add/timeval_sub, at the
least.

We don't really need the POSIX compliance, so this patch prepares us
to simply not use gnulib's 'struct timeval' replacement once a more
recent gnulib is imported, thus preserving the current behavior, by
adding a sys/time.h wrapper header that undefs gnulib's replacements,
and including that everywhere instead.

The SIZE -> OSIZE change is necessary because newer gnulib's
sys/time.h also includes windows.h/winsock2.h, which defines a
conflicting SIZE symbol.

Cross build-tested mingw-w64 32-bit and 64-bit.
Regtested on x86_64 Fedora 20.

gdb/ChangeLog:
2015-08-24  Pedro Alves  <palves@redhat.com>

* Makefile.in (HFILES_NO_SRCDIR): Add common/gdb_sys_time.h.
* common/gdb_sys_time.h: New file.
* event-loop.c: Include gdb_sys_time.h instead of sys/time.h.
* gdb_select.h: Likewise.
* gdb_usleep.c: Likewise.
* maint.c: Likewise.
* mi/mi-main.c: Likewise.
* mi/mi-parse.h: Likewise.
* remote-fileio.c: Likewise.
* remote-m32r-sdi.c: Likewise.
* remote.c: Likewise.
* ser-base.c: Likewise.
* ser-pipe.c: Likewise.
* ser-tcp.c: Likewise.
* ser-unix.c: Likewise.
* symfile.c: Likewise.
* symfile.c: Likewise.  Rename OSIZE to SIZE throughout.
* target-memory.c: Include gdb_sys_time.h instead of sys/time.h.
* utils.c: Likewise.

gdb/gdbserver/ChangeLog:
2015-08-24  Pedro Alves  <palves@redhat.com>

* debug.c: Include gdb_sys_time.h instead of sys/time.h.
* event-loop.c: Likewise.
* remote-utils.c: Likewise.
* tracepoint.c: Likewise.

9 years agoFix gdbserver SPU build
Pedro Alves [Mon, 24 Aug 2015 16:58:22 +0000 (17:58 +0100)] 
Fix gdbserver SPU build

Ref: https://sourceware.org/ml/gdb-patches/2015-08/msg00675.html

 gdbserver/spu-low.c: In function 'spu_request_interrupt':
 gdbserver/spu-low.c:639: error: incompatible type for argument 1 of 'ptid_get_lwp'

gdb/gdbserver/ChangeLog:
2015-08-24  Pedro Alves  <palves@redhat.com>

* spu-low.c (spu_request_interrupt): Use lwpid_of instead of
ptid_get_lwp.

9 years agoMake z int
Luis Machado [Mon, 24 Aug 2015 16:08:20 +0000 (13:08 -0300)] 
Make z int

This makes z an int for gdb/testsuite/gdb.opt/inline-markers.c.

gdb/testsuite/ChangeLog:

2015-08-24  Luis Machado  <lgustavo@codesourcery.com>

* gdb.opt/inline-markers.c: Make z int.

9 years agoMake z volatile.
Luis Machado [Mon, 24 Aug 2015 15:56:15 +0000 (12:56 -0300)] 
Make z volatile.

This fixes a typo in gdb/testsuite/gdb.opt/inline-markers.c, making
z a volatile variable.

gdb/testsuite/ChangeLog:

2015-08-24  Luis Machado  <lgustavo@codesourcery.com>

* gdb.opt/inline-markers.c: Make z volatile.

9 years agoPrevent GCC from folding inline test functions
Luis Machado [Mon, 24 Aug 2015 15:33:21 +0000 (12:33 -0300)] 
Prevent GCC from folding inline test functions

While doing some powerpc Linux tests on a ppc 476 board using GCC 5.2, i
noticed inline-bt.exp, inline-cmds.exp and inline-locals.exp failing.

FAIL: gdb.opt/inline-bt.exp: continue to bar (1)
FAIL: gdb.opt/inline-bt.exp: backtrace from bar (1)
FAIL: gdb.opt/inline-bt.exp: continue to bar (2)
FAIL: gdb.opt/inline-bt.exp: backtrace from bar (2)
FAIL: gdb.opt/inline-bt.exp: continue to bar (3)
FAIL: gdb.opt/inline-bt.exp: backtrace from bar (3)
FAIL: gdb.opt/inline-cmds.exp: continue to bar (1)
FAIL: gdb.opt/inline-cmds.exp: backtrace from bar (1)
FAIL: gdb.opt/inline-cmds.exp: continue to bar (2)
FAIL: gdb.opt/inline-cmds.exp: backtrace from bar (2)
FAIL: gdb.opt/inline-cmds.exp: continue to marker
FAIL: gdb.opt/inline-cmds.exp: backtrace from marker
FAIL: gdb.opt/inline-cmds.exp: step into finish marker
FAIL: gdb.opt/inline-locals.exp: continue to bar (1)
FAIL: gdb.opt/inline-locals.exp: continue to bar (2)
FAIL: gdb.opt/inline-locals.exp: backtrace from bar (2)
FAIL: gdb.opt/inline-locals.exp: continue to bar (3)
FAIL: gdb.opt/inline-locals.exp: backtrace from bar (3)

They failed because the breakpoint supposedly inserted at bar was actually
inserted at noinline.

(gdb) break inline-markers.c:20^M
Breakpoint 2 at 0x1000079c: file gdb/testsuite/gdb.opt/inline-markers.c, line 20.^M
(gdb) continue^M
Continuing.^M
^M
Breakpoint 2, noinline () at gdb/testsuite/gdb.opt/inline-markers.c:35^M
35        inlined_fn (); /* inlined */^M

As we can see, line 20 is really inside bar, not noinline:

18 void bar(void)
19 {
20   x += y; /* set breakpoint 1 here */
21 }

Further investigation shows that this is really due to GCC 5's new
ICF pass (-fipa-icf), now enabled by default at -O2, which folds bar
and marker into noinline, where the call to inlined_fn was inlined.

This breaks the testcase since it expects to stop at specific spots.

I thought about two possible fixes for this issue.

- Disable the ICF pass manually when building the binary (-fno-ipa-icf).

This has the advantage of not having to touch the testcase sources themselves,
but the disadvantage of having to add conditional blocks to test the GCC
version. If we ever change GCC's default, we will have to adjust the
conditional block again to match GCC's behavior.

- Modify the testcase sources to make the identical functions unique.

This solution doesn't touch the testcase itself, but changes the source
code slightly in order to make bar, marker and inlined_fn unique. This
causes GCC's ICF pass to ignore these functions and not fold them into
a common identical function.

I'm good with either of them, but i'm more inclined to go with the second
one.

The attached patch implements this by adding the new global variable z, set
to 0, that gets added in different ways to marker and inlined_fn. Since it
is 0, it doesn't affect any possible value checks that we may wish to do
in the future (we currently only check for values changed by bar).

Ok?

ps: I also noticed GDB doesn't do a great job at stating that the breakpoint
was actually inserted at a different source line than previously requested,
so this sounds like a bug that should be fixed, if it is not just wrong
DWARF information (did not investigate it further).

gdb/testsuite/ChangeLog:

2015-08-24  Luis Machado  <lgustavo@codesourcery.com>

* gdb.opt/inline-bt.c: New volatile global z.
* gdb.opt/inline-cmds.c: Likewise.
* gdb.opt/inline-locals.c: Likewise.
* gdb.opt/inline-markers.c: New extern global z.
(marker): Use z.
(inline_fn): Likewise.

9 years agogdb/testsuite/: garbage collect a few references to dead targets
Pedro Alves [Mon, 24 Aug 2015 14:29:49 +0000 (15:29 +0100)] 
gdb/testsuite/: garbage collect a few references to dead targets

gdb/testsuite/ChangeLog:
2015-08-24  Pedro Alves  <palves@redhat.com>

* config/m32r-stub.exp: Remove file.
* gdb.base/call-ar-st.exp: Remove reference to sparclet.
* gdb.base/call-rt-st.exp: Likewise.
* gdb.base/call-strs.exp: Likewise.
* gdb.base/default.exp: Remove references to h8300-*-hms and
*-*-udi*.
* gdb.base/funcargs.exp: Remove reference to sparclet-*-*.

9 years agogdb manual: Remove references to deleted targets
Pedro Alves [Mon, 24 Aug 2015 14:40:26 +0000 (15:40 +0100)] 
gdb manual: Remove references to deleted targets

Support for target dbug/picobug/dink32/m32r/mon2000/ppcbug was just
removed, but support for ARM RDI, Sparclet, Sparclite, Z8000, target
r3900, target array, target sds, target op50n and target w89k had
already been removed many years ago.  Drop it all in one go.

gdb/doc/ChangeLog:
2015-08-24  Pedro Alves  <palves@redhat.com>

* gdb.texinfo (Embedded Processors) <ARM>: Remove references to RDI.
<M32R>: Remove references to M32R/D.
<M68K>: Remove references to target dbug.
<MIPS Embedded>: Remove references to target r3900 and target
array.
<PowerPC Embedded>: Remove references to target dink32 and target
ppcbug, target sds
<PA, Sparclet, Sparclite, Z8000>: Delete nodes.

9 years agoDelete the remaining ROM monitor targets
Pedro Alves [Mon, 24 Aug 2015 14:40:26 +0000 (15:40 +0100)] 
Delete the remaining ROM monitor targets

Ref: https://sourceware.org/ml/gdb/2015-07/msg00011.html

All of these targets use gdb/monitor.c, which has bit rotted
years ago (I'd guess around ~6), and nobody seems to
have noticed:

 | target         | source               |
 |----------------+----------------------|
 | target dbug    | gdb/dbug-rom.c       |
 | target picobug | gdb/microblaze-rom.c |
 | target dink32  | gdb/dink32-rom.c     |
 | target m32r    | gdb/m32r-rom.c       |
 | target mon2000 | gdb/m32r-rom.c       |
 | target ppcbug  | gdb/ppcbug-rom.c     |

This deletes them, along with finally removing monitor.c.

A manual update will be done separately.

gdb/ChangeLog:
2015-08-24  Pedro Alves  <palves@redhat.com>

* NEWS: Mention removed support for the various ROM monitors.
* Makefile.in (ALL_TARGET_OBS): Remove dbug-rom.o, dink32-rom.o,
ppcbug-rom.o, m32r-rom.o, dsrec.o and monitor.o from gdb_target_obs.
* configure.tgt (h8300-*-*): Remove monitor.o and m32r-rom.o from
gdb_target_obs.
(m68*-*-*): Remove monitor.o dbug-rom.o and dsrec.o from
gdb_target_obs.
(microblaze*-linux-*): Remove microblaze-rom.o, monitor.o and
dsrec.o from gdb_target_obs.
(microblaze*-*-*): Remove microblaze-rom.o, monitor.o and dsrec.o
from gdb_target_obs.
(powerpc-*-lynx*178): Remove monitor.o and dsrec.o from
gdb_target_obs.
(powerpc*-*-*): Remove monitor.o, dsrec.o, ppcbug-rom.o and
dink32-rom.o from gdb_target_obs.
(sh*-*-linux*): Remove monitor.o and dsrec.o from gdb_target_obs.
(sh*): Remove monitor.o and dsrec.o from gdb_target_obs.
* dbug-rom.c, dink32-rom.c, dsrec.c, m32r-rom.c, microblaze-rom.c,
monitor.c, monitor.h, ppcbug-rom.c, srec.h: Delete files.

9 years agoFix the partial disassembly of a broken three byte instruction at the end of a function.
Jan Stancek [Mon, 24 Aug 2015 13:50:15 +0000 (14:50 +0100)] 
Fix the partial disassembly of a broken three byte instruction at the end of a function.

opcodes * i386-dis.c (print_insn): Fix decoding of three byte operands.

tests * gas/i386/intel.s: Add test of disassembly of a potential
three byte instuction at the end of a function.
* gas/i386/intel.d: Update expected disassembly.

9 years agognu_vector.exp: Avoid some more known FAILs
Andreas Arnez [Mon, 24 Aug 2015 13:37:40 +0000 (15:37 +0200)] 
gnu_vector.exp: Avoid some more known FAILs

This avoids two more types of FAILs with the gnu_vector test case.

First, for POWER targets newer GCCs emit an ABI note when invoked with
"-mcpu=native".  Then the test case fell back to non-native compile,
producing code for a non-vector ABI.  But that is not supported by GDB.
Thus the compiler note is now suppressed with "-Wno-psabi".

Second, on s390 the test case produced FAILs after falling back to a
non-vector ABI when using "finish" or "return" in a vector-valued
function.  This was due to a long-standing known bug (Bug 8549).  This
case is now detected, and KFAILs are emitted instead.

gdb/testsuite/ChangeLog:

* gdb.base/gnu_vector.exp: Try compilation with "-mcpu=native
-Wno-psabi" if "-mcpu=native" fails.  For the tests with "finish"
and "return" use KFAIL when GDB can not read/write the vector
return value.

9 years agoMissing parts of fixes for in-tree libiconv
Yaakov Selkowitz [Mon, 24 Aug 2015 09:57:03 +0000 (10:57 +0100)] 
Missing parts of fixes for in-tree libiconv

(Commit d23d1dff missed pushing the config/iconv.m4 change, and to
regenerate binutils' configure.)

Original description:

This is the second in a series of patches to make a build with an
in-tree GNU libiconv work as designed.

Currently GDB is the only toolchain component which actually uses an
in-tree libiconv.  This patch modifies the common AM_ICONV to use an
in-tree libiconv when present and not already provided by libc.
(GDB's workaround uses an in-tree libiconv even when libc provides
iconv(3); I'm not sure when or why that would be desirable.)

config/ChangeLog:
2015-08-24  Yaakov Selkowitz  <yselkowi@redhat.com>

* iconv.m4 (AM_ICONV_LINK): Use in-tree libiconv when present.

binutils/ChangeLog:
2015-08-24  Yaakov Selkowitz  <yselkowi@redhat.com>

* configure: Regenerate.

9 years agoAutomatic date update in version.in
GDB Administrator [Mon, 24 Aug 2015 00:00:07 +0000 (00:00 +0000)] 
Automatic date update in version.in

9 years agoReorder enum output_type for better code generation
Alan Modra [Sun, 23 Aug 2015 11:24:45 +0000 (20:54 +0930)] 
Reorder enum output_type for better code generation

Works around a gcc bug #67328 for the most commonly used of bfd_link_pic
and bfd_link_executable.

* bfdlink.h (enum output_type): Reorder enum.

9 years agoAutomatic date update in version.in
GDB Administrator [Sun, 23 Aug 2015 00:00:07 +0000 (00:00 +0000)] 
Automatic date update in version.in

9 years agoUninitialized vd_nodename
Alan Modra [Sat, 22 Aug 2015 03:54:34 +0000 (13:24 +0930)] 
Uninitialized vd_nodename

Belt and braces fix.  Either of the changes here is sufficient to
ensure vd_nodename is initialized properly.

* elf.c (_bfd_elf_slurp_version_tables): Always init vd_nodename.
Don't copy fields not set by _bfd_elf_swap_verdef_in.

9 years agoAutomatic date update in version.in
GDB Administrator [Sat, 22 Aug 2015 00:00:09 +0000 (00:00 +0000)] 
Automatic date update in version.in

9 years agoFix ax.c:gdb_eval_agent_expr
Pedro Alves [Fri, 21 Aug 2015 22:59:33 +0000 (23:59 +0100)] 
Fix ax.c:gdb_eval_agent_expr

In C++ mode:

 src/gdb/gdbserver/ax.c: In function ‘eval_result_type gdb_eval_agent_expr(eval_agent_expr_context*, agent_expr*, ULONGEST*)’:
 src/gdb/gdbserver/ax.c:1335:11: error: invalid conversion from ‘int’ to ‘eval_result_type’ [-fpermissive]
     return 1;
    ^

"1" as an enum eval_result_type is expr_eval_empty_expression, but
clearly this wants to return expr_eval_unhandled_opcode.

gdb/gdbserver/ChangeLog:
2015-08-21  Pedro Alves  <palves@redhat.com>

* ax.c (gdb_eval_agent_expr): Return expr_eval_unhandled_opcode
instead of literal 1.

9 years agoC++: Initialize a couple const globals
Pedro Alves [Fri, 21 Aug 2015 22:49:37 +0000 (23:49 +0100)] 
C++: Initialize a couple const globals

In C++ mode, we get:

 src/gdb/gdbserver/tdesc.c:43:33: error: uninitialized const ‘default_description’ [-fpermissive]
  static const struct target_desc default_description;
  ^
 In file included from src/gdb/gdbserver/tdesc.c:19:0:
 src/gdb/gdbserver/tdesc.h:26:8: note: ‘const struct target_desc’ has no user-provided default constructor
  struct target_desc
 ^

gdb/ChangeLog:
2015-08-21  Pedro Alves  <palves@redhat.com>

* frame.c (null_frame_id): Explicitly zero-initialize.

gdb/gdbserver/ChangeLog:
2015-08-21  Pedro Alves  <palves@redhat.com>

* tdesc.c (default_description): Explicitly zero-initialize.

9 years agogdb/dwarf2read.c: rename a field for c++
Tom Tromey [Fri, 21 Aug 2015 22:45:50 +0000 (23:45 +0100)] 
gdb/dwarf2read.c: rename a field for c++

Fixes:

 ../../src/gdb/dwarf2read.c:127:15: error: declaration of ‘asection* dwarf2_section_info::<anonymous union>::asection’ [-fpermissive]
      asection *asection;
^
 In file included from ../../src/gdb/common/common-types.h:35:0,
  from ../../src/gdb/common/common-defs.h:44,
  from ../../src/gdb/defs.h:28,
  from ../../src/gdb/dwarf2read.c:31:
 ../bfd/bfd.h:1596:3: error: changes meaning of ‘asection’ from ‘typedef struct bfd_section asection’ [-fpermissive]
  } asection;
    ^

gdb/ChangeLog:
2015-08-21  Tom Tromey  <tromey@redhat.com>

* dwarf2read.c (struct dwarf2_section_info): Rename field
'asection' to 'section'.
(dwarf2_has_info, get_section_bfd_owner, get_section_bfd_section)
(dwarf2_locate_sections, dwarf2_locate_sections)
(locate_dwz_sections, locate_v1_virtual_dwo_sections)
(dwarf2_locate_dwo_sections, dwarf2_locate_dwo_sections)
(dwarf2_locate_v2_dwp_sections): Adjust.

9 years agotui: don't overwrite a secondary prompt that was given no input
Patrick Palka [Fri, 21 Aug 2015 16:28:19 +0000 (12:28 -0400)] 
tui: don't overwrite a secondary prompt that was given no input

This patch fixes the following bug in TUI:

  (gdb) break foo
  No symbol table is loaded.  Use the "file" command.
  Make breakpoint pending on future shared library load? (y or [n]) <ENTER>

By submitting an empty command line to a secondary prompt, the line
corresponding to the secondary prompt is undesirably cleared and
overwritten.  Outside of a secondary prompt, clearing the prompt line
after submitting an empty command line is intended behavior which
complements GDB's repeat-command shorthand.  But inside a secondary
prompt, this behavior is undesired since the shorthand is not applicable
in that case.  We should retain the secondary-prompt line even when it's
given no input.

This patch makes sure that a prompt that was given an empty command line
is cleared and overwritten only if it's not a secondary prompt.  To
acheive this, a new predicate is defined which informs us whether the
current input handler is a secondary prompt.

gdb/ChangeLog:

* top.h (gdb_in_secondary_prompt_p): Declare.
* top.c (gdb_secondary_prompt_depth): Define.
(gdb_in_secondary_prompt_p): Define.
(gdb_readline_wrapper_cleanup): Decrement
gdb_secondary_prompt_depth.
(gdb_readline_wrapper): Increment gdb_secondary_prompt_depth.
* tui/tui-io.c (tui_getc): Don't clear the prompt line if we
are in a secondary prompt.

9 years agoUse tui_putc to output newline entered by the user
Patrick Palka [Fri, 21 Aug 2015 16:04:25 +0000 (12:04 -0400)] 
Use tui_putc to output newline entered by the user

This is necessary to make sure that start_line is updated after a
command has been entered.  Usually, start_line gets updated anyway
because most commands output text, and outputting text is done through
the function tui_puts, which updates start_line.  However if a command
does not output text, then tui_puts will not get called and start_line
will not get updated in time for the next prompt to be displayed.

One can observe this bug by executing the command "delete" within TUI.
After executing, the prompt line

  (gdb) delete

gets overwritten by the next prompt.  With this patch, the prompt line
gets preserved.

gdb/ChangeLog:

* tui/tui-io.c (tui_getc): Use tui_putc instead of waddch to
emit the newline.

9 years agoFix gdbserver crash exposed by gdb.threads/process-dies-while-handling-bp.exp
Pedro Alves [Fri, 21 Aug 2015 18:52:36 +0000 (19:52 +0100)] 
Fix gdbserver crash exposed by gdb.threads/process-dies-while-handling-bp.exp

Running that test in a loop, I found a gdbserver core dump with the
following back trace:

 Core was generated by `../gdbserver/gdbserver --once --multi :2346'.
 Program terminated with signal SIGSEGV, Segmentation fault.
 #0  0x0000000000406ab6 in inferior_regcache_data (inferior=0x0) at src/gdb/gdbserver/inferiors.c:236
 236       return inferior->regcache_data;
 (gdb) up
 #1  0x0000000000406d7f in get_thread_regcache (thread=0x0, fetch=1) at src/gdb/gdbserver/regcache.c:31
 31        regcache = (struct regcache *) inferior_regcache_data (thread);
 (gdb) bt
 #0  0x0000000000406ab6 in inferior_regcache_data (inferior=0x0) at src/gdb/gdbserver/inferiors.c:236
 #1  0x0000000000406d7f in get_thread_regcache (thread=0x0, fetch=1) at src/gdb/gdbserver/regcache.c:31
 #2  0x0000000000409271 in prepare_resume_reply (buf=0x20dd593 "", ptid=..., status=0x20edce0) at src/gdb/gdbserver/remote-utils.c:1147
 #3  0x000000000040ab0a in vstop_notif_reply (event=0x20edcc0, own_buf=0x20dd590 "T05") at src/gdb/gdbserver/server.c:183
 #4  0x0000000000426b38 in notif_write_event (notif=0x66e6c0 <notif_stop>, own_buf=0x20dd590 "T05") at src/gdb/gdbserver/notif.c:69
 #5  0x0000000000426c55 in handle_notif_ack (own_buf=0x20dd590 "T05", packet_len=8) at src/gdb/gdbserver/notif.c:113
 #6  0x000000000041118f in handle_v_requests (own_buf=0x20dd590 "T05", packet_len=8, new_packet_len=0x7fff742c77b8)
     at src/gdb/gdbserver/server.c:2862
 #7  0x0000000000413850 in process_serial_event () at src/gdb/gdbserver/server.c:4148
 #8  0x0000000000413945 in handle_serial_event (err=0, client_data=0x0) at src/gdb/gdbserver/server.c:4196
 #9  0x000000000041a1ef in handle_file_event (event_file_desc=5) at src/gdb/gdbserver/event-loop.c:429
 #10 0x00000000004199b6 in process_event () at src/gdb/gdbserver/event-loop.c:184
 #11 0x000000000041a735 in start_event_loop () at src/gdb/gdbserver/event-loop.c:547
 #12 0x00000000004123d2 in captured_main (argc=4, argv=0x7fff742c7ac8) at src/gdb/gdbserver/server.c:3562
 #13 0x000000000041252e in main (argc=4, argv=0x7fff742c7ac8) at src/gdb/gdbserver/server.c:3631

Clearly this means that a thread pushed a stop reply in the event
queue, and then before GDB confused the event, the whole process died,
along with its thread.  But the pending thread event was left
dangling.  When GDB fetched that event, gdbserver looked up the
corresponding thread, but found NULL; not expecting this, gdbserver
crashes when it tries to read this thread's registers.

gdb/gdbserver/
2015-08-21  Pedro Alves  <palves@redhat.com>

PR gdb/18749
* inferiors.c (remove_thread): Discard any pending stop reply for
this thread.
* server.c (remove_all_on_match_pid): Rename to ...
(remove_all_on_match_ptid): ... this.  Work with a filter ptid
instead of a pid.
(discard_queued_stop_replies): Change parameter to a ptid.  Now
extern.
(handle_v_kill, kill_inferior_callback)
(process_serial_event): Adjust.
(captured_main): Call initialize_notif before starting the
program, thus before threads are created.
* server.h (discard_queued_stop_replies): Declare.

9 years agogdbserver: don't pick a random thread if the current thread dies
Pedro Alves [Fri, 21 Aug 2015 18:20:31 +0000 (19:20 +0100)] 
gdbserver: don't pick a random thread if the current thread dies

In all-stop mode, if the current thread disappears while stopping all
threads, gdbserver calls set_desired_thread(0) ['0' means "I want the
continue thread"] which just picks the first thread in the list.

This looks like a dangerous thing to do.  GDBserver continues
processing whatever it was doing, but to the wrong thread.  If
debugging more than one process, we may even pick the wrong process.
Instead, GDBserver should detect the situation and bail out of
whatever is was doing.

The backends used to pay attention to the set 'cont_thread' (the Hc
thread, used in the old way to resume threads, before vCont), but all
such 'cont_thread' checks have been eliminated meanwhile.  The
remaining implicit dependencies that I found on there being a selected
thread in the backends are in the Ctrl-C handling, which some backends
use as thread to send a signal to.  Even that seems to me to be better
handled by always using the first thread in the list or by using the
signal_pid PID.

In order to make this a systematic approach, I'm making
set_desired_thread never fallback to a random thread, and instead end
up with current_thread == NULL, like already done in non-stop mode.
Then I updated all callers to handle the situation.

I stumbled on this while fixing other bugs exposed by
gdb.threads/fork-plus-threads.exp test.  The problems I saw were fixed
in a different way, but in any case, I think the potential for
problems is more or less obvious, and the resulting code looks a bit
less magical to me.

Tested on x86-64 Fedora 20, w/ native-extended-gdbserver board.

gdb/gdbserver/ChangeLog:
2015-08-21  Pedro Alves  <palves@redhat.com>

* linux-low.c (wait_for_sigstop): Always switch to no thread
selected if the previously current thread dies.
* lynx-low.c (lynx_request_interrupt): Use the first thread's
process instead of the current thread's.
* remote-utils.c (input_interrupt): Don't check if there's no
current thread.
* server.c (gdb_read_memory, gdb_write_memory): If setting the
current thread to the general thread fails, error out.
(handle_qxfer_auxv, handle_qxfer_libraries)
(handle_qxfer_libraries_svr4, handle_qxfer_siginfo)
(handle_qxfer_spu, handle_qxfer_statictrace, handle_qxfer_fdpic)
(handle_query): Check if there's a thread selected instead of
checking whether there's any thread in the thread list.
(handle_qxfer_threads, handle_qxfer_btrace)
(handle_qxfer_btrace_conf): Don't error out early if there's no
thread in the thread list.
(handle_v_cont, myresume): Don't set the current thread to the
continue thread.
(process_serial_event) <Hg handling>: Also set thread_id if the
previous general thread is still alive.
(process_serial_event) <g/G handling>: If setting the current
thread to the general thread fails, error out.
* spu-low.c (spu_resume, spu_request_interrupt): Use the first
thread's lwp instead of the current thread's.
* target.c (set_desired_thread): If the desired thread was not
found, leave the current thread pointing to NULL.  Return an int
(boolean) indicating success.
* target.h (set_desired_thread): Change return type to int.

9 years agoMake remote file transfers interruptible
Gary Benson [Fri, 21 Aug 2015 16:10:24 +0000 (17:10 +0100)] 
Make remote file transfers interruptible

This commit makes it possible to interrupt remote file transfers.

9 years agoWarn when accessing binaries from remote targets
Gary Benson [Fri, 21 Aug 2015 16:09:20 +0000 (17:09 +0100)] 
Warn when accessing binaries from remote targets

GDB provides no indicator of progress during file operations, and can
appear to have locked up during slow remote transfers.  This commit
updates GDB to print a warning each time a file is accessed over RSP.
An additional message detailing how to avoid remote transfers is
printed for the first transfer only.

gdb/ChangeLog:

* target.h (struct target_ops) <to_fileio_open>: New argument
warn_if_slow.  Update comment.  All implementations updated.
(target_fileio_open_warn_if_slow): New declaration.
* target.c (target_fileio_open): Renamed as...
(target_fileio_open_1): ...this.  New argument warn_if_slow.
Pass warn_if_slow to implementation.  Update debug printing.
(target_fileio_open): New function.
(target_fileio_open_warn_if_slow): Likewise.
* gdb_bfd.c (gdb_bfd_iovec_fileio_open): Use new function
target_fileio_open_warn_if_slow.

gdb/testsuite/ChangeLog:

* gdb.trace/pending.exp: Cope with remote transfer warnings.

9 years agoFix stale cleanup left by linux_mntns_access_fs
Gary Benson [Fri, 21 Aug 2015 15:55:53 +0000 (16:55 +0100)] 
Fix stale cleanup left by linux_mntns_access_fs

This commit fixes a stale cleanup left by linux_mntns_access_fs.

gdb/ChangeLog:

* nat/linux-namespaces.c (linux_mntns_access_fs):
Do not overwrite old_chain.

9 years agoAllow symbol and label names to be enclosed in double quotes.
Nick Clifton [Fri, 21 Aug 2015 15:42:14 +0000 (16:42 +0100)] 
Allow symbol and label names to be enclosed in double quotes.

gas PR gas/18581
* expr.c (get_symbol_end): Rename to get_symbol_name.  Add a
return parameter pointing to the start of the symbol.  Allow
symbol names enclosed in double quotes.
(restore_line_pointer): New function.  Replace the NUL character
inserted into the input stream with the given character.  If the
character was a double quote, advance the input pointer.
* expr.h (get_symbol_end): Delete.
(get_symbol_name): Add prototype.
(restore_line_pointer): Prototype.
* read.h (SKIP_WHITESPACE_AFTER_NAME): New macro.
* doc/as.texinfo (Symbol Intro): Document that symbol names can
now be enclosed in double quotes.
* cond.c (s_ifdef): Replace get_symbol_end with get_symbol_name.
Use restore_line_pointer to replace the NUL in the input stream.
Use SKIP_WHITESPACE_AFTER_NAME to skip past the end of a symbol.
Check for the use of double quoted symbol names.
* expr.c: Likewise.
* config/obj-aout.c: Likewise.
* config/obj-coff-seh.c: Likewise.
* config/obj-coff.c: Likewise.
* config/obj-elf.c: Likewise.
* config/obj-evax.c: Likewise.
* config/obj-macho.c: Likewise.
* config/obj-som.c: Likewise.
* config/tc-alpha.c: Likewise.
* config/tc-arc.c: Likewise.
* config/tc-arm.c: Likewise.
* config/tc-dlx.c: Likewise.
* config/tc-h8300.c: Likewise.
* config/tc-hppa.c: Likewise.
* config/tc-i370.c: Likewise.
* config/tc-i386-intel.c: Likewise.
* config/tc-i386.c: Likewise.
* config/tc-i960.c: Likewise.
* config/tc-ia64.c: Likewise.
* config/tc-iq2000.c: Likewise.
* config/tc-m32r.c: Likewise.
* config/tc-m68hc11.c: Likewise.
* config/tc-m68k.c: Likewise.
* config/tc-microblaze.c: Likewise.
* config/tc-mips.c: Likewise.
* config/tc-mmix.c: Likewise.
* config/tc-mn10200.c: Likewise.
* config/tc-mn10300.c: Likewise.
* config/tc-nios2.c: Likewise.
* config/tc-ppc.c: Likewise.
* config/tc-s390.c: Likewise.
* config/tc-score.c: Likewise.
* config/tc-score7.c: Likewise.
* config/tc-sparc.c: Likewise.
* config/tc-tic4x.c: Likewise.
* config/tc-tic54x.c: Likewise.
* config/tc-tic6x.c: Likewise.
* config/tc-tilegx.c: Likewise.
* config/tc-tilepro.c: Likewise.
* config/tc-v850.c: Likewise.
* config/tc-xtensa.c: Likewise.
* config/tc-z80.c: Likewise.
* dw2gencfi.c: Likewise.
* dwarf2dbgc.: Likewise.
* ecoff.c: Likewise.
* read.c: Likewise.
* stabs.c: Likewise.

tests PR gas/18581
* gas/all/byte.d: Disable this test.  Quoted expressions
are now allowed in .byte directives.
* gas/all/quoted-sym-names.s: New test.
* gas/all/quoted-sym-names.d: Expected output.
* gas/all/gas.exp: Run the new test.

9 years agoxtensa: implement NPTL helpers
Max Filippov [Thu, 2 Jul 2015 12:10:58 +0000 (15:10 +0300)] 
xtensa: implement NPTL helpers

These changes allow debugging multithreaded NPTL xtensa applications.

2015-08-20  Max Filippov  <jcmvbkbc@gmail.com>
gdb/gdbserver/
* configure.srv (xtensa*-*-linux*): Add srv_linux_thread_db=yes.
* linux-xtensa-low.c (arch/xtensa.h gdb_proc_service.h): New
#includes.
(ps_get_thread_area): New function.

2015-08-20  Max Filippov  <jcmvbkbc@gmail.com>
gdb/
* arch/xtensa.h: New file.
* xtensa-linux-nat.c (gdb_proc_service.h): New #include.
(ps_get_thread_area): New function.
* xtensa-linux-tdep.c (xtensa_linux_init_abi): Add call to
set_gdbarch_fetch_tls_load_module_address to enable TLS support.
* xtensa-tdep.c (osabi.h): New #include.
(xtensa_gdbarch_init): Call gdbarch_init_osabi to register
xtensa-specific hooks.
* xtensa-tdep.h (struct xtensa_elf_gregset_t): Add threadptr
member and move the structure to arch/xtensa.h.

9 years agoPR binutils/18257: Properly decode x86/Intel mask instructions.
Alexander Fomin [Fri, 21 Aug 2015 11:06:41 +0000 (14:06 +0300)] 
PR binutils/18257: Properly decode x86/Intel mask instructions.

opcodes/

PR binutils/18257
* i386-dis.c: Use MOD_TABLE for most of mask instructions.
(MOD enum): Add MOD_VEX_W_0_0F41_P_0_LEN_1, MOD_VEX_W_1_0F41_P_0_LEN_1,
MOD_VEX_W_0_0F41_P_2_LEN_1, MOD_VEX_W_1_0F41_P_2_LEN_1,
MOD_VEX_W_0_0F42_P_0_LEN_1, MOD_VEX_W_1_0F42_P_0_LEN_1,
MOD_VEX_W_0_0F42_P_2_LEN_1, MOD_VEX_W_1_0F42_P_2_LEN_1,
MOD_VEX_W_0_0F44_P_0_LEN_1, MOD_VEX_W_1_0F44_P_0_LEN_1,
MOD_VEX_W_0_0F44_P_2_LEN_1, MOD_VEX_W_1_0F44_P_2_LEN_1,
MOD_VEX_W_0_0F45_P_0_LEN_1, MOD_VEX_W_1_0F45_P_0_LEN_1,
MOD_VEX_W_0_0F45_P_2_LEN_1, MOD_VEX_W_1_0F45_P_2_LEN_1,
MOD_VEX_W_0_0F46_P_0_LEN_1, MOD_VEX_W_1_0F46_P_0_LEN_1,
MOD_VEX_W_0_0F46_P_2_LEN_1, MOD_VEX_W_1_0F46_P_2_LEN_1,
MOD_VEX_W_0_0F47_P_0_LEN_1, MOD_VEX_W_1_0F47_P_0_LEN_1,
MOD_VEX_W_0_0F47_P_2_LEN_1, MOD_VEX_W_1_0F47_P_2_LEN_1,
MOD_VEX_W_0_0F4A_P_0_LEN_1, MOD_VEX_W_1_0F4A_P_0_LEN_1,
MOD_VEX_W_0_0F4A_P_2_LEN_1, MOD_VEX_W_1_0F4A_P_2_LEN_1,
MOD_VEX_W_0_0F4B_P_0_LEN_1, MOD_VEX_W_1_0F4B_P_0_LEN_1,
MOD_VEX_W_0_0F4B_P_2_LEN_1, MOD_VEX_W_0_0F91_P_0_LEN_0,
MOD_VEX_W_1_0F91_P_0_LEN_0, MOD_VEX_W_0_0F91_P_2_LEN_0,
MOD_VEX_W_1_0F91_P_2_LEN_0, MOD_VEX_W_0_0F92_P_0_LEN_0,
MOD_VEX_W_0_0F92_P_2_LEN_0, MOD_VEX_W_0_0F92_P_3_LEN_0,
MOD_VEX_W_1_0F92_P_3_LEN_0, MOD_VEX_W_0_0F93_P_0_LEN_0,
MOD_VEX_W_0_0F93_P_2_LEN_0, MOD_VEX_W_0_0F93_P_3_LEN_0,
MOD_VEX_W_1_0F93_P_3_LEN_0, MOD_VEX_W_0_0F98_P_0_LEN_0,
MOD_VEX_W_1_0F98_P_0_LEN_0, MOD_VEX_W_0_0F98_P_2_LEN_0,
MOD_VEX_W_1_0F98_P_2_LEN_0, MOD_VEX_W_0_0F99_P_0_LEN_0,
MOD_VEX_W_1_0F99_P_0_LEN_0, MOD_VEX_W_0_0F99_P_2_LEN_0,
MOD_VEX_W_1_0F99_P_2_LEN_0, MOD_VEX_W_0_0F3A30_P_2_LEN_0,
MOD_VEX_W_1_0F3A30_P_2_LEN_0, MOD_VEX_W_0_0F3A31_P_2_LEN_0,
MOD_VEX_W_1_0F3A31_P_2_LEN_0, MOD_VEX_W_0_0F3A32_P_2_LEN_0,
MOD_VEX_W_1_0F3A32_P_2_LEN_0, MOD_VEX_W_0_0F3A33_P_2_LEN_0,
MOD_VEX_W_1_0F3A33_P_2_LEN_0.
(vex_w_table): Replace terminals with MOD_TABLE entries for
most of mask instructions.

gas/testsuite

PR binutils/18257
* gas/i386/disassem.s: Add mask instructions with invalid ModR/M byte.
* gas/i386/x86-64-disassem.s: Likewise.
* gas/i386/disassem.d: Updated.
* gas/i386/x86-64-disassem.d: Likewise.

9 years agoAdd readahead cache to gdb's vFile:pread
Pedro Alves [Fri, 21 Aug 2015 09:13:27 +0000 (10:13 +0100)] 
Add readahead cache to gdb's vFile:pread

This patch almost halves the time it takes to "target remote + run to
main" on a higher-latency connection.

E.g., I've got a ping time of ~85ms to an x86-64 machine on the gcc
compile farm (almost 2000km away from me), and I'm behind a ~16Mbit
ADSL.  When I connect to a gdbserver debugging itself on that machine
and run to main, it takes almost 55 seconds:

 [palves@gcc76] $ ./gdbserver :9999 ./gdbserver
 [palves@home] $ ssh -L 9999:localhost:9999 gcc76.fsffrance.org
 [palves@home] $ time ./gdb -data-directory=data-directory -ex "tar rem :9999" -ex "b main" -ex "c" -ex "set confirm off" -ex "quit"

 Pristine gdb 7.10.50.20150820-cvs gets us:
 ...
 Remote debugging using :9999
 Reading symbols from target:/home/palves/gdb/build/gdb/gdbserver/gdbserver...done.
 Reading symbols from target:/lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
 0x00007ffff7ddd190 in ?? () from target:/lib64/ld-linux-x86-64.so.2
 Breakpoint 1 at 0x41200c: file ../../../src/gdb/gdbserver/server.c, line 3635.
 Continuing.

 Breakpoint 1, main (argc=1, argv=0x7fffffffe3d8) at ../../../src/gdb/gdbserver/server.c:3635
 3635    ../../../src/gdb/gdbserver/server.c: No such file or directory.
 /home/palves/gdb/build/gdb/gdbserver/gdbserver: No such file or directory.

 real    0m54.803s
 user    0m0.329s
 sys     0m0.064s

While with the readahead cache added by this patch, it drops to:

 real    0m29.462s
 user    0m0.454s
 sys     0m0.054s

I added a few counters to show cache hit/miss, and got:

 readahead cache miss 142
 readahead cache hit 310

Tested on x86_64 Fedora 20.

gdb/ChangeLog:
2015-08-21  Pedro Alves  <palves@redhat.com>

* remote.c (struct readahead_cache): New.
(struct remote_state) <readahead_cache>: New field.
(remote_open_1): Invalidate the cache.
(readahead_cache_invalidate, readahead_cache_invalidate_fd): New
functions.
(remote_hostio_pwrite): Invalidate the readahead cache.
(remote_hostio_pread): Rename to ...
(remote_hostio_pread_vFile): ... this.
(remote_hostio_pread_from_cache): New function.
(remote_hostio_pread): Reimplement.
(remote_hostio_close): Invalidate the readahead cache.

9 years agoprocfs.c: Include "filestuff.h"
Marcin Cieslak [Wed, 19 Aug 2015 16:51:31 +0000 (16:51 +0000)] 
procfs.c: Include "filestuff.h"

Fixes implicit function declaration
error in gdb/procfs.c:4927 about undeclared
make_cleanup_close().

gdb/ChangeLog:

PR build/18843
* procfs.c: Include "filestuff.h".

9 years agoRemove fields curch and cur_line from TUI_CMD_WIN
Patrick Palka [Wed, 19 Aug 2015 01:08:57 +0000 (21:08 -0400)] 
Remove fields curch and cur_line from TUI_CMD_WIN

These fields are currently used to track the location of the cursor
inside the command window.  But their usefulness is questionable because
ncurses already internally keeps track of the location of the cursor,
whose coordinates we can query using the functions getyx(), getcurx() or
getcury().  It is an unnecessary pain to keep these fields in sync with
ncurses, and their meaning is not well-defined anyway.  For instance, it
is not clear whether the coordinates held in these fields are
authoritative, or whether the coordinates reported by ncurses are.

So to keep things simple, this patch removes these fields and replaces
existing reads of these fields with calls to the appropriate ncurses
querying functions, and replaces writes to these fields with calls to
wmove() (when necessary and applicable).

In the function tui_cont_sig(), I removed the call to wmove() entirely
because moving to (start_line, curch) makes no sense.  The move should
have been to (cur_line, curch) -- which would now be a no-op.

Tested on x86_64 Fedora 22, no obvious regressions.

gdb/ChangeLog:

* tui/tui-data.h (tui_command_info): Remove fields cur_line and
curch.
* tui/tui-data.c (tui_clear_win_detail) [CMD_WIN]: Don't set
cur_line or curch, instead call wmove().
(init_win_info) [CMD_WIN]: Likewise.
* tui/tui-io.c (tui_puts): Likewise. Don't read cur_line,
instead call getcury().
(tui_redisplay_readline): Don't set cur_line or curch.
(tui_mld_erase_entire_line): Don't read cur_line, instead call
getcury().
(tui_cont_sig): Remove call to wmove.
(tui_getc): Don't read cur_line or curch, instead call getcury()
or getyx().  Don't set curch.
* tui/tui-win.c (make_visible_with_new_height) [CMD_WIN]: Don't
set cur_line or curch.  Always move cursor to (0,0).

9 years agoAutomatic date update in version.in
GDB Administrator [Fri, 21 Aug 2015 00:00:07 +0000 (00:00 +0000)] 
Automatic date update in version.in

9 years agoFix gdb.server/solib-list.exp native-extended-gdbserver regression
Pedro Alves [Thu, 20 Aug 2015 19:08:48 +0000 (20:08 +0100)] 
Fix gdb.server/solib-list.exp native-extended-gdbserver regression

Commit 221e1a37 (remote non-stop: Process initially stopped threads
before other commands) caused a test regression when testing with the
native-extended-gdbserver board:

  FAIL: gdb.server/solib-list.exp: non-stop 1: non-stop interior stop (timeout)

This "interior stop" now happens before "target remote" prints the
prompt, so we should no longer explicitly expect it.

gdb/testsuite/ChangeLog:
2015-08-20  Pedro Alves  <palves@redhat.com>

* gdb.server/solib-list.exp: No longer expect an interior stop in
non-stop mode.

9 years agoremote non-stop: Process initially stopped threads before other commands
Pedro Alves [Thu, 20 Aug 2015 17:27:55 +0000 (18:27 +0100)] 
remote non-stop: Process initially stopped threads before other commands

The main motivation for this is making non-stop / all-stop behave
similarly on initial connection, in order to move in the direction of
reimplementing all-stop mode with the remote target always running in
non-stop mode.

When we connect to a remote target in non-stop mode, we may find
threads either running or already stopped.  The act of connecting
itself does not force threads to stop.  To handle that, the remote
non-stop connection is currently roughly like this:

 #1 - Fetch list of remote threads (qXfer:threads:read, qfThreadInfo,
    etc).  All threads are assumed to be running until the target
    reports an asynchronous stop reply for them.

 #2 - Fetch the initial set of threads that were already stopped, with
    the '?'  packet.  (In non-stop, this is coupled with the vStopped
    mechanism to be able to retrieve the status of more than one
    thread.)

The stop replies fetched in #2 are placed in the pending stop reply
queue, and left for the regular event loop to process.  That is,
"target remote" finishes and returns _before_ those stops are
processed.

That means that it's possible to have GDB process further commands
before the initial set of stopped threads is reported to the user.

E.g., before the patch, note how the prompt is printed before the
frame:

 Remote debugging using :9999
 (gdb)
 [Thread 15296] #1 stopped.
 0x0000003615a011f0 in ?? ()

Even though thread #1 was not running, for a moment, the user can see
it as such:

 $ gdb a.out -ex "set non-stop 1" -ex "tar rem :9999"  -ex "info threads" -ex "info registers"
 Remote debugging using :9999
   Id   Target Id         Frame
 * 1    Thread 4772       (running)
 Target is executing.                 <<<<<<< info registers
 (gdb)
 [Thread 4772] #1 stopped.
 0x0000003615a011f0 in ?? ()

To fix that, this commit makes gdb process all threads found already
stopped at connection time, before giving the prompt to the user.

The fix takes a cue from fork-child.c:startup_inferior [1], and
processes the events locally in remote.c, avoiding the whole
wait_for_inferior/handle_inferior_event path.  I decided to try this
approach after noticing that:

 - several cases in handle_inferior_event miss checking stop_soon.
 - we don't want to fetch the thread list in normal_stop.

and trying to fix them was resulting in sprinkling stop_soon checks in
many places, and uglifying normal_stop even more.

While with this patch, I'm avoiding changing GDB's output other than
when the prompt is printed, I think this approach is more flexible if
we do want to change it.  And also, it's likely easier to get rid of
the MI *running event that is still sent for threads that are
initially found stopped, if we want to.

This happens to fix the testsuite too.  All non-stop tests are racy
against "target remote" / gdbserver testing currently.  That is,
sometimes the tests run, but other times they're just skipped without
any indication of PASS/FAIL.  When that happens, the logs show:

 target remote localhost:2346
 Remote debugging using localhost:2346
 (gdb)
 [Thread 25418] #1 stopped.
 0x0000003615a011f0 in ?? ()
 ^CQuit
 (gdb) Remote debugging from host 127.0.0.1
 Killing process(es): 25418
 monitor exit
 (gdb) Remote connection closed
 (gdb) testcase /home/pedro/gdb/mygit/build/../src/gdb/testsuite/gdb.threads/multi-create-ns-info-thr.exp completed in 61 seconds

The trouble here is that there's output after the prompt, and the
regex in question doesn't expect that:

   -re "Remote debugging using .*$serialport_re.*$gdb_prompt $" {
verbose "Set target to $targetname"
return 0
    }

[1] - before startup_inferior was added, we'd go through
wait_for_inferior/handle_inferior_event while going through the shell,
and that turned out problematic.

Tested on x86_64 Fedora 20, gdbserver.

gdb/ChangeLog:
2015-08-20  Pedro Alves  <palves@redhat.com>

* infrun.c (print_target_wait_results): Make extern.
* infrun.h (print_target_wait_results): Declare.
* remote.c (set_stop_requested_callback): Delete.
(process_initial_stop_replies): New function.
(remote_start_remote): Use it.
(stop_reply_queue_length): New function.

gdb/testsuite/ChangeLog:
2015-08-20  Pedro Alves  <palves@redhat.com>

* gdb.server/connect-stopped-target.c: New file.
* gdb.server/connect-stopped-target.exp: New file.

9 years agoFix language of compilation unit with unknown file extension
Pedro Alves [Thu, 20 Aug 2015 11:30:08 +0000 (12:30 +0100)] 
Fix language of compilation unit with unknown file extension

Here, in dwarfread.c:process_full_comp_unit:

      /* Set symtab language to language from DW_AT_language.  If the
 compilation is from a C file generated by language preprocessors, do
 not set the language if it was already deduced by start_subfile.  */
      if (!(cu->language == language_c
    && COMPUNIT_FILETABS (cust)->language != language_c))
COMPUNIT_FILETABS (cust)->language = cu->language;

in case start_subfile doesn't manage to deduce a language
COMPUNIT_FILETABS(cust)->language ends up as language_unknown, not
language_c.  So the condition above evals false and we never set the
language from the cu's language.

gdb/ChangeLog:
2015-08-20  Pedro Alves  <palves@redhat.com>

* dwarf2read.c (process_full_comp_unit): To tell whether
start_subfile managed to deduce a language, test for
language_unknown instead of language_c.

gdb/testsuite/ChangeLog:
2015-08-20  Pedro Alves  <palves@redhat.com>

* gdb.dwarf2/comp-unit-lang.exp: New file.
* gdb.dwarf2/comp-unit-lang.c: New file.

9 years ago[Ada] Fix parsing for expressions with attributes and characters
Pierre-Marie de Rodat [Wed, 19 Aug 2015 15:12:48 +0000 (17:12 +0200)] 
[Ada] Fix parsing for expressions with attributes and characters

Before this change, trying to evaluate the following Ada expression
yielded a syntax error, even though it's completely legal:

    (gdb) p s'first = 'a'
    Error in expression, near `'.

The problem lies in the lexer (gdb/ada-lex.l): at the point we reach "'a'",
we're still in the BEFORE_QUAL_QUOTE start condition (the mechanism to
distinguish character literals from other "tick" usages: qualified
expressions and attributes), so we consider that this quote is actually a
separate "tick".

This changes resets the start condition to INITIAL in the
{TICK}[a-zA-Z][a-zA-Z]+ rule (for attributes): attributes activate this
BEFORE_QUAL_QUOTE condition and in this case the above rule is always
executed rather than the <BEFORE_QUAL_QUOTE>"'" one (in flex, it's
always the longest match that is chosen). We now have instead:

    (gdb) p s'first = 'a'
    $1 = true

gdb/ChangeLog:

* ada-lex.l: Reset the start condition to INITIAL in the rule
that matches attributes.

gdb/testsuite/ChangeLog:

* gdb.ada/attr_ref_and_charlit.exp: New testcase.
* gdb.ada/attr_ref_and_charlit/foo.adb: New file.

Tested on x86_64-linux, no regression.

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