sim: use AM_MAINTAINER_MODE

I noticed the sim code is using an old implementation of the maintainer logic.
I cut it over to the new macro (like gdb has been doing).  In practice, it
makes no difference currently as nothing in the sim tree uses it, but I have a
follow up commit for the Blackfin tree that needs it.

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daily update

ld/testsuite/
* ld-size/size.exp: For *-*-nacl* targets, use options_regsub(ld)
to massage -m arguments into _nacl variants.
* ld/testsuite/ld-size/size32-1-i386.d: Loosen regexps so they
don't care what the exact addresses are.
* ld/testsuite/ld-size/size32-1-x32.d: Likewise.
* ld/testsuite/ld-size/size32-1-x86-64.d: Likewise.
* ld/testsuite/ld-size/size32-2-i386.d: Likewise.
* ld/testsuite/ld-size/size32-2-x32.d: Likewise.
* ld/testsuite/ld-size/size32-2-x86-64.d: Likewise.
* ld/testsuite/ld-size/size64-1-x32.d: Likewise.
* ld/testsuite/ld-size/size64-1-x86-64.d: Likewise.
* ld/testsuite/ld-size/size64-2-x32.d: Likewise.
* ld/testsuite/ld-size/size64-2-x86-64.d: Likewise.

Update x86 nacl tests for section alignment change

* ld-i386/tlsbindesc-nacl.rd: Updated for text/data/bss section
alignment change.
* ld-x86-64/split-by-file-nacl.rd: Likewise.

Fixing ChangeLog entry of the last commit.

GDB was not restoring the signal handler before returning when a notification
was received.  This patch fixes it.

2013-06-04  Sergio Durigan Junior  <sergiodj@redhat.com>
    Pedro Alves  <palves@redhat.com>

* remote.c (remote_wait_as): Restore signal handler before returning
when GDB gets a notification.

2013-06-04  Gary Benson  <gbenson@redhat.com>

* gdb.base/break-probes.exp: New file.
* gdb.base/break-probes.c: Likewise.
* gdb.base/break-probes-solib.c: Likewise.
* gdb.base/info-shared.exp: New file.
* gdb.base/info-shared.c: Likewise.
* gdb.base/info-shared-solib1.c: Likewise.
* gdb.base/info-shared-solib2.c: Likewise.

2013-06-04  Jan Kratochvil  <jan.kratochvil@redhat.com>
    Gary Benson  <gbenson@redhat.com>

* lib/gdb.exp (build_executable_from_specs): Use gdb_compile_pthread,
gdb_compile_shlib or gdb_compile_shlib_pthreads where appropriate.
* lib/prelink-support.exp (build_executable_own_libs): Allow INTERP
to be set to "no" to indicate that no ld.so copy should be made.
* gdb.base/break-interp.exp (solib_bp): New constant.
(reach_1): Use the above instead of "_dl_debug_state".
(test_attach): Likewise.
(test_ld): Likewise.
* gdb.threads/dlopen-libpthread.exp: New file.
* gdb.threads/dlopen-libpthread.c: Likewise.
* gdb.threads/dlopen-libpthread-lib.c: Likewise.
* gdb.base/solib-corrupted.exp: Disable test if GDB is using probes.

2013-06-04  Gary Benson  <gbenson@redhat.com>

* breakpoint.h (handle_solib_event): Moved function declaration
to solib.h.
* breakpoint.c (handle_solib_event): Moved function to solib.c.
(bpstat_stop_status): Pass new argument to handle_solib_event.
* solib.h (update_solib_breakpoints): New function declaration.
(handle_solib_event): Moved function declaration from
breakpoint.h.
* solib.c (update_solib_breakpoints): New function.
(handle_solib_event): Moved function from breakpoint.c.
Updated to call solib_ops->handle_event if not NULL.
* solist.h (target_so_ops): New fields "update_breakpoints" and
"handle_event".
* infrun.c (set_stop_on_solib_events): New function.
(_initialize_infrun): Use the above for "set
stop-on-solib-events".
(handle_inferior_event): Pass new argument to handle_solib_event.
* solib-svr4.c (probe.h): New include.
(svr4_free_library_list): New forward declaration.
(probe_action): New enum.
(probe_info): New struct.
(probe_info): New static variable.
(NUM_PROBES): New definition.
(svr4_info): New fields "using_xfer", "probes_table" and
"solib_list".
(free_probes_table): New function.
(free_solib_list): New function.
(svr4_pspace_data_cleanup): Free probes table and solib list.
(svr4_copy_library_list): New function.
(svr4_current_sos_via_xfer_libraries): New parameter "annex".
(svr4_read_so_list): New parameter "prev_lm".
(svr4_current_sos_direct): Renamed from "svr4_current_sos".
(svr4_current_sos): New function.
(probe_and_action): New struct.
(hash_probe_and_action): New function.
(equal_probe_and_action): Likewise.
(register_solib_event_probe): Likewise.
(solib_event_probe_at): Likewise.
(solib_event_probe_action): Likewise.
(solist_update_full): Likewise.
(solist_update_incremental): Likewise.
(disable_probes_interface_cleanup): Likewise.
(svr4_handle_solib_event): Likewise.
(svr4_update_solib_event_breakpoint): Likewise.
(svr4_update_solib_event_breakpoints): Likewise.
(svr4_create_solib_event_breakpoints): Likewise.
(enable_break): Free probes table before creating breakpoints.
Use svr4_create_solib_event_breakpoints to create breakpoints.
(svr4_solib_create_inferior_hook): Free the solib list.
(_initialize_svr4_solib): Initialise
svr4_so_ops.handle_solib_event and svr4_so_ops.update_breakpoints.

2013-06-04  Gary Benson  <gbenson@redhat.com>

* target.h (target_ops): New field
"to_augmented_libraries_svr4_read".
(target_augmented_libraries_svr4_read): New macro.
* target.c (update_current_target): Handle
to_augmented_libraries_svr4_read.
* remote.c (remote_state): New field
"augmented_libraries_svr4_read".
(remote_augmented_libraries_svr4_read_feature): New function.
(remote_protocol_features): Add entry for
"augmented-libraries-svr4-read".
(remote_augmented_libraries_svr4_read): New function.
(init_remote_ops): Initialize
remote_ops.to_augmented_libraries_svr4_read.

2013-06-04 Gary Benson  <gbenson@redhat.com>

* gdb.texinfo (General Query Packets/qSupported): Added
"qXfer:libraries-svr4:read" and "augmented-libraries-svr4-read".
to the table of currently defined stub features.
Added a more detailed entry for "augmented-libraries-svr4-read".
(General Query Packets/qXfer:libraries-svr4:read): Documented
the augmented form of this packet.

2013-06-04  Gary Benson  <gbenson@redhat.com>

* NEWS: Update.

2013-06-04  Gary Benson  <gbenson@redhat.com>

* server.c (handle_query): Add "augmented-libraries-svr4-read+"
to qSupported response when appropriate.
(handle_qxfer_libraries_svr4): Allow qXfer:libraries-svr4:read
with nonzero-length annex.
* linux-low.c (linux_qxfer_libraries_svr4): Parse and handle
arguments supplied in annex.

2013-06-04  Gary Benson  <gbenson@redhat.com>

* objfiles.h (inhibit_section_map_updates): New function
declaration.
(resume_section_map_updates): Likewise.
(resume_section_map_updates_cleanup): Likewise.
* objfiles.c (objfile_pspace_info): Removed field
"objfiles_changed_p".  New fields "new_objfiles_available",
"section_map_dirty" and "inhibit_updates".
(allocate_objfile): Set new_objfiles_available.
(free_objfile): Set section_map_dirty.
(objfile_relocate1): Likewise.
(in_plt_section): Likewise.
(find_pc_section): Update the conditions under which the
section map will be updated.
(inhibit_section_map_updates): New function.
(resume_section_map_updates): Likewise.
(resume_section_map_updates_cleanup): Likewise.

2013-06-04  Gary Benson  <gbenson@redhat.com>

* probe.h (get_probe_argument_count): New declaration.
(evaluate_probe_argument): Likewise.
* probe.c (get_probe_argument_count): New function.
(evaluate_probe_argument): Likewise.
(probe_safe_evaluate_at_pc): Use the above new functions.

* ppc-tdep.h (ppc_insns_match_pattern): Update prototype.
* rs6000-tdep.c (read_insn): Add frame param, don't assume big-endian.
(ppc_insns_match_pattern): Add frame param.  Avoid multiple
target mem reads on optional insns.
* ppc-linux-tdep.c (ppc_skip_trampoline_code): Update
ppc_insns_match_pattern calls.
* ppc64-tdep.c (ppc64_standard_linkage2, ppc64_standard_linkage3):
Add match for power7 thread safety insns, and new order of
std 2,40(1) insn.  Correct code shown for _dl_runtime_resolve
invocation in comment, and update rest of comment.
(PPC64_STANDARD_LINKAGE1_LEN, PPC64_STANDARD_LINKAGE2_LEN,
PPC64_STANDARD_LINKAGE3_LEN): Delete.
(ppc64_standard_linkage2_target): Update insn offsets.
(ppc64_skip_trampoline_code): Use a single insn buffer.  Match newer
stubs first.  Update calls.

gdb/
* solib.c (solib_find): Don't need dir separator if path has
drive spec.

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daily update

Revert "fix cleanup handling in macho_symfile_read"

This patch indirectly causes a SEGV by creating a dangling pointer.
Reverting this patch while working on a clearer memory management
method for this part of the code.

gdb/Changelog:

        Revert:
        * machoread.c (macho_symfile_read): Assign first cleanup to
        'back_to'.

* syms.c (_bfd_stab_section_find_nearest_line): Add last_str
var.  Use it with last_stab.

gdb/
* mi/mi-cmd-var.c (mi_no_values, mi_simple_values): Move to
mi-parse.c.  Make them static.
(mi_all_values): Likewise.
(mi_parse_values_option): Move to mi-parse.c.  Rename it to
mi_parse_print_values.  Make it external.
* mi/mi-cmds.h (mi_no_values, mi_simple_values, mi_all_values):
Remove the declarations.
* mi/mi-parse.c (mi_parse_print_values): Moved from mi-cmd-var.c.
* mi/mi-parse.h (mi_parse_print_values): Declare.
* mi/mi-cmd-stack.c: Include mi-parse.h.
(parse_print_values): Remove
(mi_cmd_stack_list_locals): Call mi_parse_print_values instead
of parse_print_values.
(mi_cmd_stack_list_args, mi_cmd_stack_list_variables): Likewise.

daily update

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daily update

* gas/config/tc-avr.c: Change ISA for devices with USB support to
AVR_ISA_XMEGAU

* include/opcode/avr.h: Rename AVR_ISA_XCH to AVR_ISA_RMW. Remove
from AVR_ISA_XMEGA and add new AVR_ISA_XMEGAU

merge from gcc

daily update

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* linux-x86-low.c (ps_get_thread_area): Properly extend address to
64 bits in 64-cross-32 environment.

Don't align text/data/bss sections for ELF

binutils/testsuite/

* binutils-all/i386/compressed-1b.d: Updated for text/data/bss
section alignment change.
* binutils-all/i386/compressed-1c.d: Likewise.
* binutils-all/x86-64/compressed-1b.d: Likewise.
* binutils-all/x86-64/compressed-1c.d: Likewise.

gas/

* config/tc-i386.c (md_begin): Don't align text/data/bss sections
for ELF.

gas/testsuite/

* gas/i386/size-3.d: Updated for text/data/bss section alignment
change.
* gas/i386/x86-64-size-1.d: Likewise.
* gas/i386/x86-64-unwind.d: Likewise.
* gas/i386/ilp32/x86-64-size-1.d: Likewise.
* gas/i386/ilp32/x86-64-size-5.d: Likewise.
* gas/i386/ilp32/x86-64-unwind.d: Likewise.

ld/testsuite/

* ld-i386/pr12718.d: Updated for text/data/bss section alignment
change.
* ld-i386/tlsbindesc.dd: Likewise.
* ld-i386/tlsbindesc.rd: Likewise.
* ld-i386/tlsnopic.dd: Likewise.
* ld-i386/tlspic.dd: Likewise.
* ld-x86-64/ilp32-4.d: Likewise.
* ld-x86-64/pr12718.d: Likewise.
* ld-x86-64/split-by-file.rd: Likewise.
* ld-x86-64/tlsbin.dd: Likewise.
* ld-x86-64/tlsbin.rd: Likewise.
* ld-x86-64/tlsbindesc.dd: Likewise.
* ld-x86-64/tlsbindesc.rd: Likewise.
* ld-x86-64/tlsdesc.dd: Likewise.
* ld-x86-64/tlsdesc.rd: Likewise.
* ld-x86-64/tlspic.dd: Likewise.
* ld-x86-64/tlspic.rd: Likewise.

2013-05-31  Paul Brook  <paul@codesourcery.com>

gas/
* config/tc-mips.c (s_ehword): New.

2013-05-31  Catherine Moore  <clm@codesourcery.com>

gas/testsuite/
* gas/mips/ehword.d: New.
* gas/mips/ehword.s: New.
* gas/mips/mips.exp: Run ehword test.

gdb/
* tracepoint.c (all_tracepoint_actions_and_cleanup): Declare.
(encode_actions): Move code to ...
(all_tracepoint_actions_and_cleanup): ... here.  New.
(trace_dump_command): Likewise.

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daily update

2013-05-30  Alexander Ivchenko  <alexander.ivchenko@intel.com>
    Sriraman Tallam  <tmsriram@google.com>

* options.h (sort_section): New option.
* output.h (Input_section_sort_section_prefix_special_ordering_compare):
Rename from Input_section_sort_section_name_special_ordering_compare.
(Input_section_sort_section_name_compare): New struct.
* output.cc (Output_section::Input_section_sort_section_name_compare::
operator()): New function.
(Output_section::sort_attached_input_sections): Use new sort function
for .text if --sort-section=name is specified.
* layout.cc (Layout::make_output_section):
Add sorting by name when --sort-section=name is specified.
* testsuite/Makefile.am (text_section_grouping): Test option
--sort-section=name.
* testsuite/Makefile.in: Regenerate.
* testsuite/section_sorting_name.cc: New file.
* testsuite/section_sorting_name.sh: New file.

2013-05-30  Paul Brook  <paul@codesourcery.com>

bfd/
* bfd-in2.h: Regenerate.
* elf32-mips.c (elf_mips_eh_howto): New.
(bfd_elf32_bfd_reloc_type_lookup ): Support BFD_RELOC_MIPS_EH.
(bfd_elf32_bfd_reloc_name_lookup): Likewise.
(mips_elf32_rtype_to_howto): Support R_MIPS_EH.
* elf64-mips.c (elf_mips_eh_howto): New.
(bfd_elf64_bfd_reloc_type_lookup): Support BFD_RELOC_MIPS_EH.
(bfd_elf64_bfd_reloc_name_lookup): Likewise.
(mips_elf64_rtype_to_howto): Support R_MIPS_EH.
* libbfd.h: Regenerate.
* reloc.c (BFD_RELOC_MIPS_EH): New.

gas/
* config/tc-mips.c (md_apply_fix): Support BFD_RELOC_MIPS_EH.

include/elf
* mips.h (R_MIPS_EH): New.

maintenance_expand_symtabs leaks a cleanup

It turns out that maintenance_expand_symtabs was missing a call to
do_cleanups.  I found this using the cleanup checker.

* symmisc.c (maintenance_expand_symtabs): Call do_cleanups.

fix up xml-support.c

xml-support.c has a function that returns a cleanup via an out parameter.

This changes this function to be a normal cleanup constructor --
returning the cleanup directly and returning the other result via an
out parameter.

This is sort of a hack, but it lets the checker work here.

I also noticed that gdb_xml_create_parser_and_cleanup does not need to
be exported any more.

* xml-support.c (gdb_xml_create_parser_and_cleanup): Rename from
gdb_xml_create_parser_and_cleanup_1.  Return a cleanup.  Remove
'old_chain' argument.  Add 'parser_result' argument.
(gdb_xml_create_parser_and_cleanup): Remove old version.
(gdb_xml_parse_quick): Update.
(xml_process_xincludes): Update.
* xml-support.h (gdb_xml_create_parser_and_cleanup): Don't
declare.

fix compile_rx_or_error

compile_rx_or_error looks like a constructor, but it can return NULL.
This patch changes it to remove the NULL return, making it work
like any other cleanup constructor.

This is a stylistic patch but I think it is also better for code to
follow the normal conventions.

* probe.c (collect_probes): Check arguments for NULL before
calling compile_rx_or_error.
* utils.c (compile_rx_or_error): Require 'rx' to be non-NULL.
Remove NULL return.

some fixes to infrun.c

This fixes some of the problems in infrun.c that the checker reported.
I filed the remaining problems as bugs.

This patch is purely stylistic.

* infrun.c (adjust_pc_after_break): Introduce an outer null
cleanup.

fix mi-cmd-var.c

This is a stylistic change in mi-cmd-var.c that adds outer cleanups
where needed by the checker.

* mi/mi-cmd-var.c (varobj_update_one): Add an outer null cleanup.

fix cli-script.c

read_command_lines_1 had some (IMNSHO) spaghetti-ish code for cleanup
handling.  This makes the code much simpler to understand, by
introducing an outer cleanup.

This is another case where a stylistic change for the checker is also
nice for the reader.

* cli/cli-script.c (read_command_lines_1): Use a null cleanup
for 'old_chain'.  Do not check 'head' before processing
cleanups.

fix mi-cmd-stack.c

mi-cmd-stack.d had a conditional cleanup, "cleanup_tuple" that
confused the checker.  However, there was no need for this, since it
was only used via do_cleanups at the end of the function, just before
another call to do_cleanups.

So, while this is a stylistic patch for the checker, I also consider
it a generic improvement for readers of the code.

* mi/mi-cmd-stack.c (list_arg_or_local): Remove
"cleanup_tuple".

fix dbxread.c

This is a stylistic change to make some code in dbxread.c analyzable
by the checker.

* dbxread.c (dbx_read_symtab): Declare 'back_to' in a more
inner scope.  Unconditionally call do_cleanups.

fix source.c

find_and_open_source can leak a cleanup.

* source.c (find_and_open_source): Call do_cleanups.

fix linux-thread-db.c

This is a stylistic change to make it so the checker can analyze a
function in linux-thread-db.c.

* linux-thread-db.c (thread_db_load_search): Unconditionally
call do_cleanups.

fix in solib-aix.c

solib_aix_bfd_open has an early "return" that doesn't run cleanups.
This fixes the problem by dropping the null_cleanup and using a later
cleanup as the master cleanup for the function.

* solib-aix.c (solib_aix_bfd_open): Don't use a null cleanup
for 'cleanup'; instead use a later one.

use explicit returns to avoid checker confusion

The checker does not understand the idiom

if (except.reason < 0) {
   do_cleanups (whatever);
   GDB_PY_HANDLE_EXCEPTION (except);
}

because it doesn't realize that the nested 'if' actually has the same
condition.

This fixes instances of this to be more explicit.

* python/py-breakpoint.c (bppy_get_commands): Use
explicit, unconditional return.
* python/py-frame.c (frapy_read_var): Likewise.
* python/python.c (gdbpy_decode_line): Likewise.

fix cp-namespace.c

cp_lookup_symbol_imports_or_template could return without
running cleanups.

* cp-namespace.c (cp_lookup_symbol_imports_or_template): Call
do_cleanups on all return paths.

fix top.c

execute_command can leak a cleanup along one return path.

* top.c (execute_command): Discard 'cleanup_if_error' cleanups.

fix one bug in stabsread.c

Some code in stabsread.c can return without running cleanups.

* stabsread.c (read_struct_type): Call do_cleanups along
all return paths.

* mips-linux-tdep.c: Adjust formatting throughout.

fix mipsread.c

Some code in mipsread.c could leak cleanups along some return paths.

* mipsread.c (read_alphacoff_dynamic_symtab): Call do_cleanups
along all return paths.

fix one bug in symfile.c

find_separate_debug_file could leak a cleanup along some return paths.

* symfile.c (find_separate_debug_file): Call do_cleanups
along all return paths.

fix symtab.c

search_symbols had some bad code resulting in a cleanup being both
discarded and run.

* symtab.c (search_symbols): Introduce a null cleanup for
'retval_chain'.

fix py-value.c

Some code in py-value.c could exit a loop without running some
cleanups made in the loop.

* python/py-value.c (valpy_binop): Call do_cleanups before
exiting loop.

fix py-prettyprint.c

print_children, in py-prettyprint.c, could call do_cleanups twice on
the same cleanup.

* python/py-prettyprint.c (print_children): Remove extra
do_cleanups call.

fix py-frame.c

A couple return paths in frapy_read_var were missing do_cleanups calls.

* python/py-frame.c (frapy_read_var): Call do_cleanups along
all return paths.

fix py-breakpoint.c

One return path in bppy_get_commands was missing a do_cleanups call.

* python/py-breakpoint.c (bppy_get_commands): Call do_cleanups
along all return paths.

simplify cli-logging.c for analysis

This is another stylistic patch.  It changes cli-logging.c to be
analyzable by the checker, again following the method of adding an
outer cleanup and unconditionally calling do_cleanups.

* cli/cli-logging.c (set_logging_redirect): Unconditionally
call do_cleanups.

fix varobj.c

c_value_of_root is missing a call to do_cleanups at one return.
This fixes the problem by removing that return and letting control
fall through.

* varobj.c (c_value_of_root): Call do_cleanups along all
return paths.

make a cleanup unconditionally in tracepoint.c

This is another cosmetic patch.  It introduces an "outer" cleanup in
trace_dump_command and arranges to unconditionally call do_cleanups.
This lets the checker analyze the function.

* tracepoint.c (trace_dump_command): Unconditionally call
do_cleanups.

fix two buglets in breakpoint.c

First, output_thread_groups leaks a cleanup along one return path.

Second, parse_cmd_to_aexpr could return without running its cleanups,
if there was an exception in a TRY_CATCH.

* breakpoint.c (output_thread_groups, parse_cmd_to_aexpr): Call
do_cleanups earlier.

fix cleanup handling in macho_symfile_read

macho_symfile_read leaks a cleanup by assigning to 'back_to' too late.

* machoread.c (macho_symfile_read): Assign first cleanup to
'back_to'.

fix cleanup handling in m32r_load

m32r_load is missing a call to do_cleanups along one return path.

* m32r-rom.c (m32r_load): Call do_cleanups at all returns.

fix list_available_thread_groups

list_available_thread_groups, in mi-main.c, leaks a cleanup.
This changes it to call do_cleanups.

* mi/mi-main.c (list_available_thread_groups): Call do_cleanups.

cleanup fixes for inf-ptrace.c

This is one of the stylistic patches.  The code here in inf-ptrace.c
is not incorrect, but it is in a style that the cleanup checker cannot
handle.  This patch changes it to a simpler style, following the usual
method of introducing an unconditional "outer" cleanup.

* inf-ptrace.c (inf_ptrace_create_inferior): Unconditionally
call discard_cleanups.
(inf_ptrace_attach): Likewise.

cleanup fixes for remote-mips.c

remote-mips.c has a few 'return's where cleanups are not run.

* remote-mips.c (mips_exit_debug): Call do_cleanups on all
return paths.
(mips_initialize): Likewise.
(common_open): Call do_cleanups.

fix up cleanup handling in internal_vproblem

internal_vproblem can return, so this introduces proper cleanup
handling there.  Otherwise it may make a cleanup that is leaked.

* utils.c (internal_vproblem): Call do_cleanups.

fix linespec bug noticed by the checker

This fixes a linespec bug noticed by the cleanup checker.

find_linespec_symbols did this:

  cleanup = demangle_for_lookup (name, state->language->la_language,
 &lookup_name);
[...]
      cleanup = make_cleanup (xfree, canon);

But this is wrong, as it makes a subsequent call to do_cleanups not
clean up all the local state.

* linespec.c (find_linespec_symbols): Don't reassign to 'cleanup'.

remove erroneous return from setup_user_args

This fixes setup_user_args to drop a useless and confusing "return".

* cli/cli-script.c (setup_user_args): Don't return after error.

fix cleanups in som_symtab_read

This fixes som_symtab_read not to leak cleanups.

* somread.c (som_symtab_read): Call do_cleanups.

fix print_command_1

This is a stylistic patch to make it so the checker can analyze
print_command_1.  This amounts to installing an outer cleanup and
unconditionally invoking it.

* printcmd.c (print_command_1): Unconditionally call do_cleanups.

some cleanup checker fixes

Fix some bugs pointed out by the cleanup checker.  This one just fixes
some simple CLI reports, where CLI commands know that their caller
will do cleanups.  This an older style with few instances, so it is
simpler to fix them up than to teach the checker about it.

* cli/cli-cmds.c (cd_command, alias_command): Call do_cleanups.
* cli/cli-dump.c (restore_binary_file): Call do_cleanups.
* interps.c (interpreter_exec_cmd): Call do_cleanups.
* source.c (show_substitute_path_command): Call do_cleanups.
(unset_substitute_path_command, set_substitute_path_command):
Likewise.
* symfile.c (load_command): Call do_cleanups.

add the cleanup checker

This patch adds the cleanup checker.  This is a Python plugin for GCC
that checks some rules for cleanup handling.  In particular it tries
to notice when cleanups are left dangling at the end of a function.

It does this by applying a few simple rules.

First, it understands that a function whose return type is "struct
cleanup *" is a "cleanup constructor".  Such functions are expected to
return the first cleanup that they make.

Then, it has the notion of a "master cleanup".  The checker keeps a
stack of all cleanups made in a basic block.  The first element is
pushed on the stack is the master cleanup -- the one that must later
be passed to either do_cleanups or discard_cleanups.

It is not perfect -- some constructs confuse it.  So, part of this
series rewrites some code in gdb so that it is analyzable.  I'll note
these spots and you can decide whether or not this is a good idea.

This patch also changes gcc-with-excheck to give it options.  Now you
must use either -Xc (for the cleanup checker) or -Xx (for the
exception checker).

* contrib/cleanup_check.py: New file.
* contrib/gcc-with-excheck: Add option parsing.

windows_delete_thread: Add missing space in cast expression

gdb/ChangeLog:

* windows-nat.c (windows_delete_thread): Add missing space
in cast expression.

2013-05-30  Hafiz Abid Qadeer  <abidh@codesourcery.com>

* inferior.c (top level): Include tilde.h.
(add_inferior_command): Call tilde_expand on the value of 'exec'
argument.

gdb/
* tracepoint.c (encode_actions_1): Remove parameter 't'.
Caller update.
(encode_actions): Likewise.
* remote.c (remote_download_tracepoint): Caller update.
* tracepoint.h (encode_actions): Update declaration.

Fix build breakage with Python 2.4.

With Python 2.4, we see this build failure:

./python/python-internal.h: In function 'gdb_Py_DECREF':
./python/python-internal.h:179: warning: dereferencing 'void *' pointer
./python/python-internal.h:179: error: request for member 'ob_refcnt' in something not a structure or union

Python 2.4 forgets to cast 'op' to PyObject pointer on the ob_refcnt
accesses:

  #define Py_DECREF(op)                                   \
          if (_Py_DEC_REFTOTAL  _Py_REF_DEBUG_COMMA       \
              --(op)->ob_refcnt != 0)                     \
                  _Py_CHECK_REFCNT(op)                    \
          else                                            \
                  _Py_Dealloc((PyObject *)(op))

...

  #define _Py_CHECK_REFCNT(OP)                                    \
  {       if ((OP)->ob_refcnt < 0)                                \
                  _Py_NegativeRefcount(__FILE__, __LINE__,        \
                                       (PyObject *)(OP));         \
  }

Python 2.7:

  #define Py_DECREF(op)                                   \
      do {                                                \
          if (_Py_DEC_REFTOTAL  _Py_REF_DEBUG_COMMA       \
          --((PyObject*)(op))->ob_refcnt != 0)            \
              _Py_CHECK_REFCNT(op)                        \
          else                                            \
          _Py_Dealloc((PyObject *)(op));                  \
      } while (0)

...

  #define _Py_CHECK_REFCNT(OP)                                    \
  {       if (((PyObject*)OP)->ob_refcnt < 0)                             \
                  _Py_NegativeRefcount(__FILE__, __LINE__,        \
                                       (PyObject *)(OP));         \
  }

gdb/
2013-05-30  Pedro Alves  <palves@redhat.com>

* python/python-internal.h (gdb_Py_DECREF): Cast OP to PyObject
pointer.

gdb/

* remote.c (remote_check_symbols): Remove unused parameter
'objfile'.
Declaration update.
(remote_start_remote, remote_new_objfile): Caller update.

gdb/
* mi/mi-cmds.c (mi_cmds): Define MI command
'-exec-arguments' by macro DEF_MI_CMD_CLI_1 instead of
DEF_MI_CMD_CLI.

gdb/testsuite/
* gdb.mi/mi-cmd-param-changed.exp (test_command_param_changed):
Add a test that no MI notification is emitted when executing
-exec-arguments.

*** empty log message ***

daily update

gas/
* write.c (resolve_reloc_expr_symbols): On REL targets don't
convert relocs who have no relocatable field either.  Rephrase
the conditional so that the PC-relative check is only applied
for REL targets.

gas/testsuite/
* gas/mips/jalr3.d: New test.
* gas/mips/jalr3-n32.d: New test.
* gas/mips/jalr3-n64.d: New test.
* gas/mips/jalr3.s: New test source.
* gas/mips/mips.exp: Run the new tests.

ld/testsuite/
* ld-mips-elf/jalr3.dd: New test.
* ld-mips-elf/jalr3.ld: New test linker script.
* ld-mips-elf/mips-elf.exp: Run the new test.

* dwarf2.c (struct dwarf2_debug): Add fields for handling
alternate debug info source.
(dwarf_debug_sections): Add entries for alternate .debug_str and
.debug_info sections.
(dwarf_debug_section_enum): Likewise.
(read_alt_indirect_string): New function.  Handles a
DW_FORM_GNU_strp_alt attribute.
(read_alt_indirect_ref): New function.  Handles a
DW_FORM_GNU_ref_alt attribute.
(read_attribute_value): Process DW_FORM_GNU_ref_alt and
DW_FORM_GNU_strp_alt.
(find_abstract_instance_name): Handle DW_FORM_GNU_ref_alt
attributes.
(_bfd_dwarf2_cleanup_debug_info): Free alternate debug info
sources.
* opncls.c (GNU_DEBUGALTLINK): Define.
(bfd_get_alt_debug_link_info): New function.
(separate_alt_debug_file_exists): New function.
(find_separate_debug_file): Add parameters for fetch and check
functions.
(bfd_follow_gnu_debugaltlink): New function.
* bfd-in2.h: Regenerate.

[remote] Insert breakpoints in the right process.

I noticed that gdb.multi/multi-arch.exp wasn't passing with
extended-remote GDBserver with my pending multi-process+multi-arch
series anymore on current mainline, while it used to pass before:

 (gdb) run
 Starting program: /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.multi/ma-hangout
 Process /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.multi/ma-hangout created; pid = 32067
 Warning:
 Cannot insert breakpoint 2.
 Error accessing memory address 0x4005c2: Unknown error -1.
 Cannot insert breakpoint -1.
 Temporarily disabling shared library breakpoints:
 breakpoint #-1

 (gdb) FAIL: gdb.multi/multi-arch.exp: starting inferior 2

Investigating manually, I found an easy way to reproduce.  You just
need breakpoints on distinct inferiors, and a way to have GDB install
them in one go:

 (gdb) set breakpoint always-inserted on
 (gdb) info breakpoints
 Num     Type           Disp Enb Address            What
 2       breakpoint     del  n   <MULTIPLE>
 2.1                         y     0x00000000004005c2 in main at ../../../src/gdb/testsuite/gdb.multi/hello.c:40 inf 1
 2.2                         y     0x08048475         in main at ../../../src/gdb/testsuite/gdb.multi/hangout.c:22 inf 2
 (gdb) enable 2
 Warning:
 Cannot insert breakpoint 2.
 Error accessing memory address 0x4005c2: Unknown error -1.

And turning on remote debugging, we see:

 (gdb) set debug remote 1
 (gdb) disable 2
 (gdb) enable 2
 Sending packet: $Z0,4005c2,1#71...Packet received: E01
 Sending packet: $Z0,8048475,1#87...Packet received: OK
 Warning:
 Cannot insert breakpoint 2.
 Error accessing memory address 0x4005c2: Unknown error -1.

Notice that each of those Z0 breakpoints should be set in different
processes.  However, no Hg packet to select a process has been sent in
between, so GDBserver tries to plant both on the same process that
happens to be current.  The first Z0 then not so surprisingly fails.
IOW, the blame is on GDB, for telling GDBserver to plant both
breakpoints in the same process.

remote.c has a lazy scheme where it keeps a local cache of the
remote's selected general thread, and delays updating it on the remote
side until necessary (memory/register reads/writes, etc.).  This is
done to reduce RSP traffic.  The bug is that the Zx breakpoint
insert/remove methods weren't committing the selected thread/process
back to the remote side:

 Breakpoint 3, remote_insert_breakpoint (gdbarch=0x1383ae0, bp_tgt=0x140c2b0) at ../../src/gdb/remote.c:8148
 8148      if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE)
 (top-gdb) p inferior_ptid
 $3 = {pid = 3670, lwp = 0, tid = 3670}
 (top-gdb) p general_thread
 $4 = {pid = 3671, lwp = 0, tid = 3671}

IOW, a call to set_general_process is missing.

I did some auditing over remote.c, and added calls to all places I
found missing it.

This only used to work by chance before.  breakpoint.c switches to a
thread of the target process before installing a breakpoint location.
That calls switch_to_thread.  Before:

 2012-07-27  Yao Qi  <yao@codesourcery.com>

         * thread.c (switch_to_thread): Don't call registers_changed.

that caused the register caches to all be flushed and refetched before
installing the breakpoint location.  Given fetching registers commits
the remote general thread (with Hg), masking out the latent bug.

Tested on x86_64 Fedora 17 with GDBserver.

gdb/
2013-05-29  Pedro Alves  <palves@redhat.com>

* remote.c (remote_insert_breakpoint, remote_remove_breakpoint)
(remote_insert_watchpoint, remote_remove_watchpoint)
(remote_insert_hw_breakpoint, remote_remove_hw_breakpoint)
(remote_verify_memory, compare_sections_command)
(remote_search_memory): Set the general process/thread on the
remote side.

[AArch64] Remove all traces of aarch64-without-fpu.xml.

The aarch64-without-fpu description is unused.

Linux requires an FPU, so the AArch64 native port always returns the
with-fpu variant:

static const struct target_desc *
aarch64_linux_read_description (struct target_ops *ops)
{
  initialize_tdesc_aarch64 ();
  return tdesc_aarch64;
}

When the target doesn't report a target description at all, we
fallback to a register set with an FPU:

aarch64_gdbarch_init ()
...
  if (!tdesc_has_registers (tdesc))
    tdesc = tdesc_aarch64;

This just removes the dead description.

Tested by building on x86_64 Fedora 17 with --enable=targets=all.

gdb/
2013-05-29  Pedro Alves  <palves@redhat.com>

* aarch64-tdep.c: Don't include "features/aarch64-without-fpu.c".
(_initialize_aarch64_tdep): Don't call
initialize_tdesc_aarch64_without_fpu.
* features/Makefile (WHICH): Remove reference to
aarch64-without-fpu.
* features/aarch64-without-fpu.c: Delete file.
* regformats/aarch64-without-fpu.dat: Delete file.

binutils/
* dwarf.c (display_debug_lines_raw): Print section offsets.

binutils/testsuite/
* binutils-all/dw2-1.W: Adjust expected output.
* binutils-all/objdump.W: Likewise.
* binutils-all/i386/compressed-1a.d: Likewise.
* binutils-all/x86-64/compressed-1a.d: Likewise.

gas/testsuite/
* gas/cris/rd-dw2-1.d: Adjust expected output.
* gas/cris/rd-dw2-10.d: Likewise.
* gas/cris/rd-dw2-11.d: Likewise.
* gas/cris/rd-dw2-12.d: Likewise.
* gas/cris/rd-dw2-13.d: Likewise.
* gas/cris/rd-dw2-14.d: Likewise.
* gas/cris/rd-dw2-15.d: Likewise.
* gas/cris/rd-dw2-2.d: Likewise.
* gas/cris/rd-dw2-3.d: Likewise.
* gas/cris/rd-dw2-4.d: Likewise.
* gas/cris/rd-dw2-5.d: Likewise.
* gas/cris/rd-dw2-6.d: Likewise.
* gas/cris/rd-dw2-7.d: Likewise.
* gas/cris/rd-dw2-8.d: Likewise.
* gas/cris/rd-dw2-9.d: Likewise.
* gas/elf/dwarf2-1.d: Likewise.
* gas/elf/dwarf2-2.d: Likewise.
* gas/elf/dwarf2-3.d: Likewise.
* gas/i386/debug1.d: Likewise.
* gas/i386/dw2-compress-1.d: Likewise.
* gas/i386/ilp32/lns/lns-common-1.d: Likewise.
* gas/i386/ilp32/lns/lns-duplicate.d: Likewise.
* gas/ia64/pr13167.d: Likewise.
* gas/lns/lns-big-delta.d: Likewise.
* gas/lns/lns-common-1-alt.d: Likewise.
* gas/lns/lns-common-1.d: Likewise.
* gas/lns/lns-duplicate.d: Likewise.
* gas/mips/loc-swap-2.d: Likewise.
* gas/mips/loc-swap.d: Likewise.
* gas/mips/micromips@loc-swap-2.d: Likewise.
* gas/mips/micromips@loc-swap.d: Likewise.
* gas/mips/mips16-dwarf2-n32.d: Likewise.
* gas/mips/mips16-dwarf2.d: Likewise.
* gas/mips/mips16@loc-swap-2.d: Likewise.
* gas/mips/mips16@loc-swap.d: Likewise.

daily update

*** empty log message ***

gas/
* config/tc-mips.c (macro) <ld>: Don't use $zero for address
calculation.

gas/testsuite/
* gas/mips/ld-zero.d: New test.
* gas/mips/ld-zero-2.d: New test.
* gas/mips/ld-zero-3.d: New test.
* gas/mips/ld-zero-q.d: New test.
* gas/mips/ld-zero-u.d: New test.
* gas/mips/ecoff@ld-zero-3.d: New test.
* gas/mips/micromips@ld-zero-2.d: New test.
* gas/mips/micromips@ld-zero-3.d: New test.
* gas/mips/ld-zero.s: New test source.
* gas/mips/ld-zero-2.s: New test source.
* gas/mips/ld-zero-3.s: New test source.
* gas/mips/ld-zero-q.s: New test source.
* gas/mips/ld-zero-u.s: New test source.
* gas/mips/mips.exp: Run the new tests.

Correct the relocation names for R_AARCH64_TLSDESC_LD_PREL19 and R_AARCH64_TLSDESC_ADR_PAGE21.

gas/
2013-05-28  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

* config/tc-arm.c (it_fsm_post_encode): Improve
warning messages about deprecated IT block formats.

gas/testsuite
2013-05-28  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

* gas/arm/armv8-a-bad.l: Update expected warning message.
* gas/arm/armv8-a-it-bad.l: Likewise.

[GDBserver][AArch64] Remove references to aarch64-without-fpu.xml.

The GDBserver Aarch64 port includes the aarch64-without-fpu
description in the build, but doesn't actually use it anywhere.  As
Linux always requires an FPU, just remove the dead code.

gdb/gdbserver/
2013-05-28  Pedro Alves  <palves@redhat.com>

* Makefile.in (clean): Remove reference to aarch64-without-fpu.c.
(aarch64-without-fpu.c): Delete rule.
* configure.srv (aarch64*-*-linux*): Remove references to
aarch64-without-fpu.o and aarch64-without-fpu.xml.
* linux-aarch64-low.c (init_registers_aarch64_without_fpu): Remove
declaration.

[AArch64] Range check only resolved relocations.

2013-05-28  Marcus Shawcroft  <marcus.shawcroft@arm.com>

        * config/tc-aarch64.c (md_apply_fix): Move value range checking
        inside fx_done condition.

2013-05-28  Marcus Shawcroft  <marcus.shawcroft@arm.com>

        * gas/aarch64/adr_1.d: New file.
        * gas/aarch64/adr_1.s: New file.
        * gas/aarch64/b_1.d: New file.
        * gas/aarch64/b_1.s: New file.
        * gas/aarch64/beq_1.d: New file.
        * gas/aarch64/beq_1.s: New file.
        * gas/aarch64/ldr_1.d: New file.
        * gas/aarch64/ldr_1.s: New file.
        * gas/aarch64/tbz_1.d: New file.
        * gas/aarch64/tbz_1.s: New file.

gdb/
* tracepoint.c (stringify_collection_list): Remove parameter
'string'.
(encode_actions): Caller update.  Remove local variables.

daily update