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392 Commits

Author SHA1 Message Date
Yao Qi
daf6667d1f Class readonly_detached_regcache 
This patch adds a new class (type) for readonly regcache, which is
created via regcache::save.  readonly_detached_regcache inherits
readable_regcache.

gdb:

2018-02-21  Yao Qi  <yao.qi@linaro.org>

	* dummy-frame.c (dummy_frame_cache) <prev_regcache>: Use
	readonly_detached_regcache.
	(dummy_frame_prev_register): Use regcache->cooked_read.
	* frame.c (frame_save_as_regcache): Change return type.
	(frame_pop): Update.
	* frame.h (frame_save_as_regcache): Update declaration.
	* inferior.h (get_infcall_suspend_state_regcache): Update
	declaration.
	* infrun.c (infcall_suspend_state) <registers>: use
	readonly_detached_regcache.
	(save_infcall_suspend_state): Don't use regcache_dup.
	(get_infcall_suspend_state_regcache): Change return type.
	* linux-fork.c (struct fork_info) <savedregs>: Change to
	readonly_detached_regcache.
	<pc>: New field.
	(fork_save_infrun_state): Don't use regcache_dup.
	(info_checkpoints_command): Adjust.
	* mi/mi-main.c (register_changed_p): Update declaration.
	(mi_cmd_data_list_changed_registers): Use
	readonly_detached_regcache.
	(register_changed_p): Change parameter type to
	readonly_detached_regcache.
	* ppc-linux-tdep.c (ppu2spu_cache) <regcache>: Use
	readonly_detached_regcache.
	(ppu2spu_sniffer): Construct a new readonly_detached_regcache.
	* regcache.c (readonly_detached_regcache::readonly_detached_regcache):
	New.
	(regcache::save): Move it to reg_buffer.
	(regcache::restore): Change parameter type.
	(regcache_dup): Remove.
	* regcache.h (reg_buffer) <save>: New method.
	(readonly_detached_regcache): New class.
	* spu-tdep.c (spu2ppu_cache) <regcache>: Use
	readonly_detached_regcache.
	(spu2ppu_sniffer): Construct a new readonly_detached_regcache.
 2018-02-21 11:20:03 +00:00
Yao Qi
fc5b873615 Remove regcache_save and regcache_cpy 
... instead we start to use regcache methods save and restore.  It is
quite straightforward to replace regcache_save with regcache->save.

regcache_cpy has some asserts, some of them not necessary, like

 gdb_assert (src != dst);

because we already assert !m_readonly_p and src->m_readonly_p, so
src isn't dst.  Some of the asserts are moved to ::restore.

gdb:

2018-02-21  Yao Qi  <yao.qi@linaro.org>

	* frame.c (frame_save_as_regcache): Use regcache method save.
	(frame_pop): Use regcache method restore.
	* infrun.c (restore_infcall_suspend_state): Likewise.
	* linux-fork.c (fork_load_infrun_state): Likewise.
	* ppc-linux-tdep.c (ppu2spu_sniffer): User regcache method
	save.
	* regcache.c (regcache_save): Remove.
	(regcache::restore): More asserts.
	(regcache_cpy): Remove.
	* regcache.h (regcache_save): Remove the declaration.
	(regcache::restore): Move from private to public.
	Remove the friend declaration of regcache_cpy.
	(regcache_cpy): Remove declaration.
 2018-02-21 11:20:03 +00:00
Joel Brobecker
e2882c8578 Update copyright year range in all GDB files 
gdb/ChangeLog:

        Update copyright year range in all GDB files
 2018-01-02 07:38:06 +04:00
Yao Qi
f26ae15b47 Construct readonly regcache without address space 
The address space is useless to readonly regcache, so this patch removes
the parameter to construct readonly regcache.

address_space was added in regcache by 6c95b8d, but for read-write
regcache.  regcache::aspace is used for various breakpoint/watchpoint
checking, and these regcache are not read-only regcache.

gdb:

2017-11-02  Yao Qi  <yao.qi@linaro.org>

	* frame.c (do_frame_register_read): Remove aspace.
	* jit.c (jit_frame_sniffer): Likwise.
	* ppc-linux-tdep.c (ppu2spu_sniffer): Likewise.
	* regcache.c (regcache::regcache): Pass nullptr.
	(regcache_print): Caller updated.
	* regcache.h (regcache::regcache): Remove one constructor
	parameter aspace.
 2017-11-02 15:15:42 +00:00
Yao Qi
8b86c95921 const-fy regcache::m_aspace 
regcache::m_aspace is a const, never changed during the lifetime of
regcache object.  The address_space object is a const object too.

gdb:

2017-11-02  Yao Qi  <yao.qi@linaro.org>

	* breakpoint.c (insert_single_step_breakpoints): Update.
	* frame.c (struct frame_info) <aspace>: Add const.
	(frame_save_as_regcache): Add const.
	(get_frame_address_space): Return const address_space *.
	* frame.h (get_frame_address_space): Update declaration.
	* infrun.c (struct step_over_info) <aspace>: Add const.
	(set_step_over_info): Make aspace const.
	(displaced_step_prepare_throw): Change variable const.
	(resume): Likewise.
	(proceed): Likewise.
	(adjust_pc_after_break): Likewise.
	(save_waitstatus): Likewise.
	(handle_signal_stop): Likewise.
	(keep_going_pass_signal): Likewise.
	* jit.c (jit_frame_sniffer): Add const.
	* mips-tdep.c (mips_single_step_through_delay): Likewise.
	* ppc-linux-tdep.c (ppu2spu_sniffer): Likewise.
	* record-full.c (record_full_wait_1): Likewise.
	* regcache.c (regcache::regcache): Change parameter to const.
	* regcache.h (regcache::regcache): Likewise.
	(regcache::aspace): Return const address_space *.
	(regcache) <m_aspace>: Add const.
 2017-11-02 15:15:42 +00:00
Yao Qi
a01bda5221 s/get_regcache_aspace (regcache)/regcache->aspace ()/g 
and remove get_regcache_aspace.

gdb:

2017-11-02  Yao Qi  <yao.qi@linaro.org>

	* darwin-nat.c (cancel_breakpoint): Use regcache->aspace ().
	* frame.c (create_sentinel_frame): Likewise.
	* infrun.c (displaced_step_prepare_throw): Likewise.
	(resume): Likewise.
	(thread_still_needs_step_over_bp): Likewise.
	(proceed): Likewise.
	(do_target_wait): Likewise.
	(adjust_pc_after_break): Likewise.
	(handle_syscall_event): Likewise.
	(save_waitstatus): Likewise.
	(handle_inferior_event_1): Likewise.
	(handle_signal_stop): Likewise.
	(keep_going_pass_signal): Likewise.
	* linux-nat.c (status_callback): Likewise.
	(save_stop_reason): Likewise.
	(resume_stopped_resumed_lwps): Likewise.
	* record-full.c (record_full_exec_insn): Likewise.
	(record_full_wait_1): Likewise.
	* regcache.c (get_regcache_aspace): Remove.
	* regcache.h (get_regcache_aspace): Remove.
 2017-11-02 15:15:41 +00:00
Tom Tromey
981a3fb359 Constify add_prefix_cmd 
This changes add_prefix_cmd to accept a const-taking function as an
argument; then fixes up all the callers.

In a couple of spots I had to add a non-const overload of a function,
because the function is passed to two different command-adding
"constructors".  These overloads are temporary; once constification is
complete they can be removed.

This patch also fixes a typo I happened to notice while constifying.

Note that this touches a couple of files (gnu-nat.c and go32-nat.c)
that I can't build.  So, while I made a best-effort there, I am not
certain they will still compile.

Tested by rebuilding.

gdb/ChangeLog
2017-10-11  Tom Tromey  <tom@tromey.com>

	* gdbthread.h (thread_command): Constify.
	* inferior.h (detach_command): Constify.
	* top.h (set_history, show_history): Constify.
	* arm-tdep.c (set_arm_command, show_arm_command): Constify.
	* serial.c (serial_set_cmd, serial_show_cmd): Constify.
	* bsd-kvm.c (bsd_kvm_cmd): Constify.
	* printcmd.c (set_command): Constify.
	(non_const_set_command): New function.
	* dcache.c (set_dcache_command, show_dcache_command): Constify.
	* breakpoint.c (enable_command, disable_command, delete_command)
	(catch_command, tcatch_command, set_breakpoint_cmd)
	(show_breakpoint_cmd): Constify.
	* macrocmd.c (macro_command): Constify.
	* infcmd.c (unset_command, kill_command, detach_command)
	(info_proc_cmd): Constify.
	* i386-tdep.c (set_mpx_cmd, show_mpx_cmd): Constify.
	* auto-load.c (show_auto_load_cmd, set_auto_load_cmd)
	(info_auto_load_cmd): Constify.
	* target-descriptions.c (set_tdesc_cmd, show_tdesc_cmd)
	(unset_tdesc_cmd): Constify.
	* ada-lang.c (set_ada_command, show_ada_command)
	(maint_set_ada_cmd, maint_show_ada_cmd): Constify.
	* guile/guile.c (set_guile_command, show_guile_command)
	(info_guile_command): Constify.
	* tui/tui-win.c (tui_command, set_tui_cmd, show_tui_cmd):
	Constify.
	* skip.c (skip_command): Constify.
	* compile/compile.c (_initialize_compile): Constify.
	* dwarf2read.c (set_dwarf_cmd, show_dwarf_cmd): Constify.
	* btrace.c (maint_btrace_cmd, maint_btrace_set_cmd)
	(maint_btrace_show_cmd, maint_btrace_pt_set_cmd)
	(maint_btrace_pt_show_cmd): Constify.
	* remote.c (set_remote_cmd, show_remote_cmd, remote_command):
	Constify.
	* python/python.c (user_show_python, user_set_python): Constify.
	* mips-tdep.c (set_mips_command, show_mips_command)
	(set_mipsfpu_command): Constify.
	* record-btrace.c (cmd_record_btrace_start)
	(cmd_set_record_btrace, cmd_show_record_btrace)
	(cmd_set_record_btrace_bts, cmd_show_record_btrace_bts)
	(cmd_set_record_btrace_pt, cmd_show_record_btrace_pt): Constify.
	* rs6000-tdep.c (set_powerpc_command, show_powerpc_command):
	Constify.
	* symfile.c (overlay_command): Constify.
	* spu-tdep.c (set_spu_command, show_spu_command): Constify.
	* cli/cli-logging.c (set_logging_command, show_logging_command):
	Constify.
	* cli/cli-dump.c (dump_command, append_command)
	(srec_dump_command, ihex_dump_command, verilog_dump_command)
	(tekhex_dump_command, binary_dump_command)
	(binary_append_command): Constify.
	* cli/cli-decode.c (struct cmd_list_element): Change type of
	"fun".
	* cli/cli-cmds.c (info_command, show_command, set_debug)
	(show_debug): Constify.
	(show_command): Add non-const overload.
	* top.c (set_history, show_history): Constify.
	* sh-tdep.c (set_sh_command, show_sh_command): Constify.
	* command.h (add_prefix_cmd): Accept a cmd_const_cfunc_ftype.
	* target.c (target_command): Constify.
	* sparc64-tdep.c (info_adi_command): Constify.
	* record-full.c (cmd_record_full_start): Constify.
	(set_record_full_command): Constify.  Fix typo.
	(show_record_full_command): Constify.
	* thread.c (thread_command, thread_apply_command): Constify.
	* memattr.c (dummy_cmd): Constify.
	* value.c (function_command): Constify.
	* frame.c (set_backtrace_cmd, show_backtrace_cmd): Constify.
	* probe.c (info_probes_command): Constify.
	* ser-tcp.c (set_tcp_cmd, show_tcp_cmd): Constify.
	* gnu-nat.c (set_task_cmd, show_task_cmd, set_thread_cmd)
	(show_thread_cmd, set_thread_default_cmd)
	(show_thread_default_cmd): Constify.
	(check_empty): Constify.
	* tracepoint.c (tfind_command): Constify.
	* cp-support.c (maint_cplus_command): Constify.
	* windows-tdep.c (info_w32_command): Constify.
	* record.c (cmd_record_start, set_record_command)
	(show_record_command, info_record_command, cmd_record_goto):
	Constify.
	* ravenscar-thread.c (set_ravenscar_command)
	(show_ravenscar_command): Constify.
	* utils.c (set_internal_problem_cmd, show_internal_problem_cmd):
	Constify.
	(add_internal_problem_command): Remove casts.
	* arc-tdep.c (maintenance_print_arc_command): Constify.
	* valprint.c (set_print, show_print, set_print_raw)
	(show_print_raw): Constify.
	* maint.c (maintenance_command, maintenance_info_command)
	(maintenance_print_command, maintenance_set_cmd)
	(maintenance_show_cmd, set_per_command_cmd)
	(show_per_command_cmd, maintenance_check_command): Constify.
	* language.c (set_check, show_check): Constify.
	* typeprint.c (show_print_type, set_print_type): Constify.
	* go32-nat.c (go32_info_dos_command): Constify.
 2017-10-11 16:21:02 -06:00
Tom Tromey
30a9c02fef Remove cleanup from frame_prepare_for_sniffer 
Currently frame_prepare_for_sniffer returns a cleanup.  This patch
changes it to return void, and exposes frame_cleanup_after_sniffer to
the caller.

Normally I would write an RAII class for this sort of thing; but
because there was just a single caller of frame_prepare_for_sniffer,
and because this caller is already using try/catch, I thought it
seemed ok to require explicit calls in this instance.

Regression tested by the buildbot.

gdb/ChangeLog
2017-10-08  Tom Tromey  <tom@tromey.com>

	* frame-unwind.c (frame_unwind_try_unwinder): Update.
	* frame.h (frame_cleanup_after_sniffer): Declare.
	(frame_prepare_for_sniffer): Return void.
	* frame.c (frame_cleanup_after_sniffer): No longer static.  Change
	type of argument.
	(frame_prepare_for_sniffer): Return void.
 2017-10-08 23:16:42 -06:00
Pedro Alves
55b11ddf16 Redesign mock environment for gdbarch selftests 
A following patch will remove this hack from within regcache's
implementation:

  struct regcache *
  get_thread_arch_regcache (ptid_t ptid, struct gdbarch *gdbarch)
  {
    struct address_space *aspace;

    /* For the benefit of "maint print registers" & co when debugging an
       executable, allow dumping the regcache even when there is no
       thread selected (target_thread_address_space internal-errors if
       no address space is found).  Note that normal user commands will
       fail higher up on the call stack due to no
       target_has_registers.  */
    aspace = (ptid_equal (null_ptid, ptid)
	      ? NULL
	      : target_thread_address_space (ptid));

i.e., it'll no longer be possible to try to build a regcache for
null_ptid.  That change alone would regress the gdbarch self tests
though, causing this:

  (gdb) maintenance selftest
  [...]
  Running selftest register_to_value.
  src/gdb/inferior.c:309: internal-error: inferior* find_inferior_pid(int): Assertion `pid != 0' failed.
  A problem internal to GDB has been detected,
  further debugging may prove unreliable.
  Quit this debugging session? (y or n) FAIL: gdb.gdb/unittest.exp: maintenance selftest (GDB internal error)

The problem is that the way the mocking environment for those unit
tests is written is a bit fragile: it creates a special purpose
regcache (and sentinel's frame), using whatever is the current
inferior_ptid (usually null_ptid), and assumes get_current_regcache
will find that in the regcache::current_regcache list.

This commit changes the way the mock environment is created.  It
eliminates the special regcache and frame and instead creates a fuller
mock environment, with a custom mock target_ops, and then a mock
inferior and thread "running" on that target.

If there's already a running target when you type "maint selftest",
then we error out, instead of pushing a new target on top of the
existing one (and thus killing the debug session).  This results in:

  (gdb) maint selftest
  (...)
  Self test failed: arch i386: target already pushed
  Self test failed: arch i386:x86-64: target already pushed
  Self test failed: arch i386:x64-32: target already pushed
  Self test failed: arch i8086: target already pushed
  Self test failed: arch i386:intel: target already pushed
  Self test failed: arch i386:x86-64:intel: target already pushed
  Self test failed: arch i386:x64-32:intel: target already pushed
  Self test failed: arch i386:nacl: target already pushed
  Self test failed: arch i386:x86-64:nacl: target already pushed
  Self test failed: arch i386:x64-32:nacl: target already pushed
  Self test failed: self-test failed at /home/pedro/gdb/mygit/src/gdb/selftest-arch.c:86
  (...)
  Ran 19 unit tests, 1 failed

I think that's OK, because self tests are really meant to be run from
a clean state right after GDB is started.  I'm adding that erroring
out just as safe measure just in case someone types "maint selftest"
on the command line while already debugging something (as I've done
it).

(In my multi-target branch, where this patch originated from, we don't
actually need to error out, because there each inferior has its own
target stack).

Also, note that the current code was doing:

 current_inferior()->gdbarch = gdbarch;

without taking care to restore the previous gdbarch.  This means that
GDB's state was being left inconsistent after running the self tests,
further supporting the point that there's probably not much
expectation that mixing "maint selftests" and regular debugging in the
same GDB invocation really works.  This patch fixes that, regardless.

gdb/ChangeLog:
2017-10-04  Pedro Alves  <palves@redhat.com>

	* frame.c (create_test_frame): Delete.
	* frame.h (create_test_frame): Delete.
	* gdbarch-selftests.c: Include gdbthread.h and target.h.
	(class regcache_test): Delete.
	(test_target_has_registers, test_target_has_stack)
	(test_target_has_memory, test_target_prepare_to_store)
	(test_target_store_registers): New functions.
	(test_target_ops): New class.
	(register_to_value_test): Error out if there's already a
	process_stratum (or higher) target pushed.  Create a fuller mock
	environment, with mock target_ops, inferior, address space, thread
	and inferior_ptid.
	* progspace.c (struct address_space): Move to ...
	* progspace.h (struct address_space): ... here.
	* regcache.h (regcache::~regcache, regcache::raw_write)
	[GDB_SELF_TEST]: No longer virtual.
 2017-10-04 18:21:09 +01:00
Tom Tromey
9ac86b52da Remove make_cleanup_regcache_xfree 
This removes make_cleanup_regcache_xfree in favor of using
std::unique_ptr as the return type of frame_save_as_regcache.

gdb/ChangeLog
2017-09-25  Tom Tromey  <tom@tromey.com>

	* spu-tdep.c (spu2ppu_sniffer): Update.
	* regcache.h (make_cleanup_regcache_xfree): Don't declare.
	* regcache.c (do_regcache_xfree, make_cleanup_regcache_xfree):
	Remove.
	* ppc-linux-tdep.c (ppu2spu_sniffer): Update.
	* mi/mi-main.c (mi_cmd_data_list_changed_registers): Update.
	* frame.h (frame_save_as_regcache): Return std::unique_ptr.
	* frame.c (frame_save_as_regcache): Return std::unique_ptr.
	(frame_pop): Update.
 2017-09-25 19:54:07 -06:00
Tom Tromey
791199cc75 Remove regcache_xmalloc 
This patch removes regcache_xmalloc in favor of plain "new".

gdb/ChangeLog
2017-09-25  Tom Tromey  <tom@tromey.com>

	* regcache.h (regcache_xmalloc): Don't declare.
	(regcache_raw_set_cached_value): Update comment.
	* regcache.c (regcache_xmalloc): Remove.
	* ppc-linux-tdep.c (ppu2spu_sniffer): Use new.
	* jit.c (jit_frame_sniffer): Use new.
	* frame.c (frame_save_as_regcache): Use new.
 2017-09-25 19:54:05 -06:00
John Baldwin
481695ed5f Remove unnecessary function prototypes. 
These prototypes were required when compiling GDB as C but are not
required for C++.

gdb/ChangeLog:

	* aarch64-linux-nat.c: Remove _initialize_aarch64_linux_nat
	prototype.
	* aarch64-linux-tdep.c: Remove _initialize_aarch64_linux_tdep
	prototype.
	* aarch64-newlib-tdep.c: Remove _initialize_aarch64_newlib_tdep
	prototype.
	* aarch64-tdep.c: Remove _initialize_aarch64_tdep prototype.
	* ada-exp.y: Remove _initialize_ada_exp prototype.
	* ada-lang.c: Remove _initialize_ada_language prototype.
	* ada-tasks.c: Remove _initialize_tasks prototype.
	* addrmap.c: Remove _initialize_addrmap prototype.
	* agent.c: Remove _initialize_agent prototype.
	* aix-thread.c: Remove _initialize_aix_thread prototype.
	* alpha-bsd-nat.c: Remove _initialize_alphabsd_nat prototype.
	* alpha-linux-nat.c: Remove _initialize_alpha_linux_nat prototype.
	* alpha-linux-tdep.c: Remove _initialize_alpha_linux_tdep
	prototype.
	* alpha-nbsd-tdep.c: Remove _initialize_alphanbsd_tdep prototype.
	* alpha-obsd-tdep.c: Remove _initialize_alphaobsd_tdep prototype.
	* alpha-tdep.c: Remove _initialize_alpha_tdep prototype.
	* amd64-darwin-tdep.c: Remove _initialize_amd64_darwin_tdep
	prototype.
	* amd64-dicos-tdep.c: Remove _initialize_amd64_dicos_tdep
	prototype.
	* amd64-fbsd-nat.c: Remove _initialize_amd64fbsd_nat prototype.
	* amd64-fbsd-tdep.c: Remove _initialize_amd64fbsd_tdep prototype.
	* amd64-linux-nat.c: Remove _initialize_amd64_linux_nat prototype.
	* amd64-linux-tdep.c: Remove _initialize_amd64_linux_tdep
	prototype.
	* amd64-nbsd-nat.c: Remove _initialize_amd64nbsd_nat prototype.
	* amd64-nbsd-tdep.c: Remove _initialize_amd64nbsd_tdep prototype.
	* amd64-obsd-nat.c: Remove _initialize_amd64obsd_nat prototype.
	* amd64-obsd-tdep.c: Remove _initialize_amd64obsd_tdep prototype.
	* amd64-sol2-tdep.c: Remove _initialize_amd64_sol2_tdep prototype.
	* amd64-tdep.c: Remove _initialize_amd64_tdep prototype.
	* amd64-windows-nat.c: Remove _initialize_amd64_windows_nat
	prototype.
	* amd64-windows-tdep.c: Remove _initialize_amd64_windows_tdep
	prototype.
	* annotate.c: Remove _initialize_annotate prototype.
	* arc-newlib-tdep.c: Remove _initialize_arc_newlib_tdep prototype.
	* arc-tdep.c: Remove _initialize_arc_tdep prototype.
	* arch-utils.c: Remove _initialize_gdbarch_utils prototype.
	* arm-linux-nat.c: Remove _initialize_arm_linux_nat prototype.
	* arm-linux-tdep.c: Remove _initialize_arm_linux_tdep prototype.
	* arm-nbsd-tdep.c: Remove _initialize_arm_netbsd_tdep prototype.
	* arm-obsd-tdep.c: Remove _initialize_armobsd_tdep prototype.
	* arm-symbian-tdep.c: Remove _initialize_arm_symbian_tdep
	prototype.
	* arm-tdep.c: Remove _initialize_arm_tdep prototype.
	* arm-wince-tdep.c: Remove _initialize_arm_wince_tdep prototype.
	* auto-load.c: Remove _initialize_auto_load prototype.
	* auxv.c: Remove _initialize_auxv prototype.
	* avr-tdep.c: Remove _initialize_avr_tdep prototype.
	* ax-gdb.c: Remove _initialize_ax_gdb prototype.
	* bfin-linux-tdep.c: Remove _initialize_bfin_linux_tdep prototype.
	* bfin-tdep.c: Remove _initialize_bfin_tdep prototype.
	* break-catch-sig.c: Remove _initialize_break_catch_sig prototype.
	* break-catch-syscall.c: Remove _initialize_break_catch_syscall
	prototype.
	* break-catch-throw.c: Remove _initialize_break_catch_throw
	prototype.
	* breakpoint.c: Remove _initialize_breakpoint prototype.
	* bsd-uthread.c: Remove _initialize_bsd_uthread prototype.
	* btrace.c: Remove _initialize_btrace prototype.
	* charset.c: Remove _initialize_charset prototype.
	* cli/cli-cmds.c: Remove _initialize_cli_cmds prototype.
	* cli/cli-dump.c: Remove _initialize_cli_dump prototype.
	* cli/cli-interp.c: Remove _initialize_cli_interp prototype.
	* cli/cli-logging.c: Remove _initialize_cli_logging prototype.
	* cli/cli-script.c: Remove _initialize_cli_script prototype.
	* coff-pe-read.c: Remove _initialize_coff_pe_read prototype.
	* coffread.c: Remove _initialize_coffread prototype.
	* compile/compile.c: Remove _initialize_compile prototype.
	* complaints.c: Remove _initialize_complaints prototype.
	* completer.c: Remove _initialize_completer prototype.
	* copying.awk: Remove _initialize_copying prototype.
	* copying.c: Regenerate.
	* core-regset.c: Remove _initialize_core_regset prototype.
	* corefile.c: Remove _initialize_core prototype.
	* corelow.c: Remove _initialize_corelow prototype.
	* cp-abi.c: Remove _initialize_cp_abi prototype.
	* cp-namespace.c: Remove _initialize_cp_namespace prototype.
	* cp-support.c: Remove _initialize_cp_support prototype.
	* cp-valprint.c: Remove _initialize_cp_valprint prototype.
	* cris-linux-tdep.c: Remove _initialize_cris_linux_tdep prototype.
	* cris-tdep.c: Remove _initialize_cris_tdep prototype.
	* ctf.c: Remove _initialize_ctf prototype.
	* d-lang.c: Remove _initialize_d_language prototype.
	* darwin-nat-info.c: Remove _initialize_darwin_info_commands
	prototype.
	* darwin-nat.c: Remove _initialize_darwin_inferior prototype.
	* dbxread.c: Remove _initialize_dbxread prototype.
	* dcache.c: Remove _initialize_dcache prototype.
	* demangle.c: Remove _initialize_demangler prototype.
	* disasm-selftests.c: Remove _initialize_disasm_selftests
	prototype.
	* disasm.c: Remove _initialize_disasm prototype.
	* dtrace-probe.c: Remove _initialize_dtrace_probe prototype.
	* dummy-frame.c: Remove _initialize_dummy_frame prototype.
	* dwarf2-frame-tailcall.c: Remove _initialize_tailcall_frame
	prototype.
	* dwarf2-frame.c: Remove _initialize_dwarf2_frame prototype.
	* dwarf2expr.c: Remove _initialize_dwarf2expr prototype.
	* dwarf2loc.c: Remove _initialize_dwarf2loc prototype.
	* dwarf2read.c: Remove _initialize_dwarf2_read prototype.
	* elfread.c: Remove _initialize_elfread prototype.
	* exec.c: Remove _initialize_exec prototype.
	* extension.c: Remove _initialize_extension prototype.
	* f-lang.c: Remove _initialize_f_language prototype.
	* f-valprint.c: Remove _initialize_f_valprint prototype.
	* fbsd-nat.c: Remove _initialize_fbsd_nat prototype.
	* fbsd-tdep.c: Remove _initialize_fbsd_tdep prototype.
	* filesystem.c: Remove _initialize_filesystem prototype.
	* findcmd.c: Remove _initialize_mem_search prototype.
	* fork-child.c: Remove _initialize_fork_child prototype.
	* frame-base.c: Remove _initialize_frame_base prototype.
	* frame-unwind.c: Remove _initialize_frame_unwind prototype.
	* frame.c: Remove _initialize_frame prototype.
	* frv-linux-tdep.c: Remove _initialize_frv_linux_tdep prototype.
	* frv-tdep.c: Remove _initialize_frv_tdep prototype.
	* ft32-tdep.c: Remove _initialize_ft32_tdep prototype.
	* gcore.c: Remove _initialize_gcore prototype.
	* gdb_bfd.c: Remove _initialize_gdb_bfd prototype.
	* gdbarch.c: Regenerate.
	* gdbarch.sh: Remove _initialize_gdbarch prototype.
	* gdbtypes.c: Remove _initialize_gdbtypes prototype.
	* gnu-nat.c: Remove _initialize_gnu_nat prototype.
	* gnu-v2-abi.c: Remove _initialize_gnu_v2_abi prototype.
	* gnu-v3-abi.c: Remove _initialize_gnu_v3_abi prototype.
	* go-lang.c: Remove _initialize_go_language prototype.
	* go32-nat.c: Remove _initialize_go32_nat prototype.
	* guile/guile.c: Remove _initialize_guile prototype.
	* h8300-tdep.c: Remove _initialize_h8300_tdep prototype.
	* hppa-linux-nat.c: Remove _initialize_hppa_linux_nat prototype.
	* hppa-linux-tdep.c: Remove _initialize_hppa_linux_tdep prototype.
	* hppa-nbsd-nat.c: Remove _initialize_hppanbsd_nat prototype.
	* hppa-nbsd-tdep.c: Remove _initialize_hppanbsd_tdep prototype.
	* hppa-obsd-nat.c: Remove _initialize_hppaobsd_nat prototype.
	* hppa-obsd-tdep.c: Remove _initialize_hppaobsd_tdep prototype.
	* hppa-tdep.c: Remove _initialize_hppa_tdep prototype.
	* i386-bsd-nat.c: Remove _initialize_i386bsd_nat prototype.
	* i386-cygwin-tdep.c: Remove _initialize_i386_cygwin_tdep
	prototype.
	* i386-darwin-tdep.c: Remove _initialize_i386_darwin_tdep
	prototype.
	* i386-dicos-tdep.c: Remove _initialize_i386_dicos_tdep prototype.
	* i386-fbsd-nat.c: Remove _initialize_i386fbsd_nat prototype.
	* i386-fbsd-tdep.c: Remove _initialize_i386fbsd_tdep prototype.
	* i386-gnu-nat.c: Remove _initialize_i386gnu_nat prototype.
	* i386-gnu-tdep.c: Remove _initialize_i386gnu_tdep prototype.
	* i386-linux-nat.c: Remove _initialize_i386_linux_nat prototype.
	* i386-linux-tdep.c: Remove _initialize_i386_linux_tdep prototype.
	* i386-nbsd-nat.c: Remove _initialize_i386nbsd_nat prototype.
	* i386-nbsd-tdep.c: Remove _initialize_i386nbsd_tdep prototype.
	* i386-nto-tdep.c: Remove _initialize_i386nto_tdep prototype.
	* i386-obsd-nat.c: Remove _initialize_i386obsd_nat prototype.
	* i386-obsd-tdep.c: Remove _initialize_i386obsd_tdep prototype.
	* i386-sol2-nat.c: Remove _initialize_amd64_sol2_nat prototype.
	* i386-sol2-tdep.c: Remove _initialize_amd64_sol2_tdep prototype.
	* i386-tdep.c: Remove _initialize_i386_tdep prototype.
	* i386-windows-nat.c: Remove _initialize_i386_windows_nat
	prototype.
	* ia64-libunwind-tdep.c: Remove _initialize_libunwind_frame
	prototype.
	* ia64-linux-nat.c: Remove _initialize_ia64_linux_nat prototype.
	* ia64-linux-tdep.c: Remove _initialize_ia64_linux_tdep prototype.
	* ia64-tdep.c: Remove _initialize_ia64_tdep prototype.
	* ia64-vms-tdep.c: Remove _initialize_ia64_vms_tdep prototype.
	* infcall.c: Remove _initialize_infcall prototype.
	* infcmd.c: Remove _initialize_infcmd prototype.
	* inferior.c: Remove _initialize_inferiors prototype.
	* inflow.c: Remove _initialize_inflow prototype.
	* infrun.c: Remove _initialize_infrun prototype.
	* interps.c: Remove _initialize_interpreter prototype.
	* iq2000-tdep.c: Remove _initialize_iq2000_tdep prototype.
	* jit.c: Remove _initialize_jit prototype.
	* language.c: Remove _initialize_language prototype.
	* linux-fork.c: Remove _initialize_linux_fork prototype.
	* linux-nat.c: Remove _initialize_linux_nat prototype.
	* linux-tdep.c: Remove _initialize_linux_tdep prototype.
	* linux-thread-db.c: Remove _initialize_thread_db prototype.
	* lm32-tdep.c: Remove _initialize_lm32_tdep prototype.
	* m2-lang.c: Remove _initialize_m2_language prototype.
	* m32c-tdep.c: Remove _initialize_m32c_tdep prototype.
	* m32r-linux-nat.c: Remove _initialize_m32r_linux_nat prototype.
	* m32r-linux-tdep.c: Remove _initialize_m32r_linux_tdep prototype.
	* m32r-tdep.c: Remove _initialize_m32r_tdep prototype.
	* m68hc11-tdep.c: Remove _initialize_m68hc11_tdep prototype.
	* m68k-bsd-nat.c: Remove _initialize_m68kbsd_nat prototype.
	* m68k-bsd-tdep.c: Remove _initialize_m68kbsd_tdep prototype.
	* m68k-linux-nat.c: Remove _initialize_m68k_linux_tdep prototype.
	* m68k-linux-tdep.c: Remove _initialize_m68k_linux_tdep prototype.
	* m68k-tdep.c: Remove _initialize_m68k_tdep prototype.
	* m88k-bsd-nat.c: Remove _initialize_m68kbsd_nat prototype.
	* m88k-tdep.c: Remove _initialize_m68kbsd_tdep prototype.
	* machoread.c: Remove _initialize_machoread prototype.
	* macrocmd.c: Remove _initialize_macrocmd prototype.
	* macroscope.c: Remove _initialize_macroscope prototype.
	* maint.c: Remove _initialize_maint_cmds prototype.
	* mdebugread.c: Remove _initialize_mdebugread prototype.
	* memattr.c: Remove _initialize_mem prototype.
	* mep-tdep.c: Remove _initialize_mep_tdep prototype.
	* mi/mi-cmd-env.c: Remove _initialize_mi_cmd_env prototype.
	* mi/mi-cmds.c: Remove _initialize_mi_cmds prototype.
	* mi/mi-interp.c: Remove _initialize_mi_interp prototype.
	* mi/mi-main.c: Remove _initialize_mi_main prototype.
	* microblaze-linux-tdep.c: Remove
	_initialize_microblaze_linux_tdep prototype.
	* microblaze-tdep.c: Remove _initialize_microblaze_tdep prototype.
	* mips-fbsd-nat.c: Remove _initialize_mips_fbsd_nat prototype.
	* mips-fbsd-tdep.c: Remove _initialize_mips_fbsd_tdep prototype.
	* mips-linux-nat.c: Remove _initialize_mips_linux_nat prototype.
	* mips-linux-tdep.c: Remove _initialize_mips_linux_tdep prototype.
	* mips-nbsd-nat.c: Remove _initialize_mipsnbsd_nat prototype.
	* mips-nbsd-tdep.c: Remove _initialize_mipsnbsd_tdep prototype.
	* mips-sde-tdep.c: Remove _initialize_mips_sde_tdep prototype.
	* mips-tdep.c: Remove _initialize_mips_tdep prototype.
	* mips64-obsd-nat.c: Remove _initialize_mips64obsd_nat prototype.
	* mips64-obsd-tdep.c: Remove _initialize_mips64obsd_tdep
	prototype.
	* mipsread.c: Remove _initialize_mipsread prototype.
	* mn10300-linux-tdep.c: Remove _initialize_mn10300_linux_tdep
	prototype.
	* mn10300-tdep.c: Remove _initialize_mn10300_tdep prototype.
	* moxie-tdep.c: Remove _initialize_moxie_tdep prototype.
	* msp430-tdep.c: Remove _initialize_msp430_tdep prototype.
	* mt-tdep.c: Remove _initialize_mt_tdep prototype.
	* nds32-tdep.c: Remove _initialize_nds32_tdep prototype.
	* nios2-linux-tdep.c: Remove _initialize_nios2_linux_tdep
	prototype.
	* nios2-tdep.c: Remove _initialize_nios2_tdep prototype.
	* nto-procfs.c: Remove _initialize_procfs prototype.
	* nto-tdep.c: Remove _initialize_nto_tdep prototype.
	* objc-lang.c: Remove _initialize_objc_language prototype.
	* objfiles.c: Remove _initialize_objfiles prototype.
	* observer.c: Remove observer_test_first_notification_function,
	observer_test_second_notification_function,
	observer_test_third_notification_function, and
	_initialize_observer prototypes.
	* opencl-lang.c: Remove _initialize_opencl_language prototypes.
	* osabi.c: Remove _initialize_gdb_osabi prototype.
	* osdata.c: Remove _initialize_osdata prototype.
	* p-valprint.c: Remove _initialize_pascal_valprint prototype.
	* parse.c: Remove _initialize_parse prototype.
	* ppc-fbsd-nat.c: Remove _initialize_ppcfbsd_nat prototype.
	* ppc-fbsd-tdep.c: Remove _initialize_ppcfbsd_tdep prototype.
	* ppc-linux-nat.c: Remove _initialize_ppc_linux_nat prototype.
	* ppc-linux-tdep.c: Remove _initialize_ppc_linux_tdep prototype.
	* ppc-nbsd-nat.c: Remove _initialize_ppcnbsd_nat prototype.
	* ppc-nbsd-tdep.c: Remove _initialize_ppcnbsd_tdep prototype.
	* ppc-obsd-nat.c: Remove _initialize_ppcobsd_nat prototype.
	* ppc-obsd-tdep.c: Remove _initialize_ppcobsd_tdep prototype.
	* printcmd.c: Remove _initialize_printcmd prototype.
	* probe.c: Remove _initialize_probe prototype.
	* proc-api.c: Remove _initialize_proc_api prototype.
	* proc-events.c: Remove _initialize_proc_events prototype.
	* proc-service.c: Remove _initialize_proc_service prototype.
	* procfs.c: Remove _initialize_procfs prototype.
	* psymtab.c: Remove _initialize_psymtab prototype.
	* python/python.c: Remove _initialize_python prototype.
	* ravenscar-thread.c: Remove _initialize_ravenscar prototype.
	* record-btrace.c: Remove _initialize_record_btrace prototype.
	* record-full.c: Remove _initialize_record_full prototype.
	* record.c: Remove _initialize_record prototype.
	* regcache.c: Remove _initialize_regcache prototype.
	* reggroups.c: Remove _initialize_reggroup prototype.
	* remote-notif.c: Remove _initialize_notif prototype.
	* remote-sim.c: Remove _initialize_remote_sim prototype.
	* remote.c: Remove _initialize_remote prototype.
	* reverse.c: Remove _initialize_reverse prototype.
	* rl78-tdep.c: Remove _initialize_rl78_tdep prototype.
	* rs6000-aix-tdep.c: Remove _initialize_rs6000_aix_tdep prototype.
	* rs6000-lynx178-tdep.c: Remove _initialize_rs6000_lynx178_tdep
	prototype.
	* rs6000-nat.c: Remove _initialize_rs6000_nat prototype.
	* rs6000-tdep.c: Remove _initialize_rs6000_tdep prototype.
	* rust-exp.y: Remove _initialize_rust_exp prototype.
	* rx-tdep.c: Remove _initialize_rx_tdep prototype.
	* s390-linux-nat.c: Remove _initialize_s390_nat prototype.
	* s390-linux-tdep.c: Remove _initialize_s390_tdep prototype.
	* score-tdep.c: Remove _initialize_score_tdep prototype.
	* selftest-arch.c: Remove _initialize_selftests_foreach_arch
	prototype.
	* ser-go32.c: Remove _initialize_ser_dos prototype.
	* ser-mingw.c: Remove _initialize_ser_windows prototype.
	* ser-pipe.c: Remove _initialize_ser_pipe prototype.
	* ser-tcp.c: Remove _initialize_ser_tcp prototype.
	* ser-unix.c: Remove _initialize_ser_hardwire prototype.
	* serial.c: Remove _initialize_serial prototype.
	* sh-linux-tdep.c: Remove _initialize_sh_linux_tdep prototype.
	* sh-nbsd-nat.c: Remove _initialize_shnbsd_nat prototype.
	* sh-nbsd-tdep.c: Remove _initialize_shnbsd_tdep prototype.
	* sh-tdep.c: Remove _initialize_sh_tdep prototype.
	* skip.c: Remove _initialize_step_skip prototype.
	* sol-thread.c: Remove _initialize_sol_thread prototype.
	* solib-aix.c: Remove _initialize_solib_aix prototype.
	* solib-darwin.c: Remove _initialize_darwin_solib prototype.
	* solib-dsbt.c: Remove _initialize_dsbt_solib prototype.
	* solib-frv.c: Remove _initialize_frv_solib prototype.
	* solib-spu.c: Remove _initialize_spu_solib prototype.
	* solib-svr4.c: Remove _initialize_svr4_solib prototype.
	* solib-target.c: Remove _initialize_solib_target prototype.
	* solib.c: Remove _initialize_solib prototype.
	* source.c: Remove _initialize_source prototype.
	* sparc-linux-nat.c: Remove _initialize_sparc_linux_nat prototype.
	* sparc-linux-tdep.c: Remove _initialize_sparc_linux_tdep
	prototype.
	* sparc-nat.c: Remove _initialize_sparc_nat prototype.
	* sparc-nbsd-nat.c: Remove _initialize_sparcnbsd_nat prototype.
	* sparc-nbsd-tdep.c: Remove _initialize_sparcnbsd_tdep prototype.
	* sparc-obsd-tdep.c: Remove _initialize_sparc32obsd_tdep
	prototype.
	* sparc-sol2-nat.c: Remove _initialize_sparc_sol2_nat prototype.
	* sparc-sol2-tdep.c: Remove _initialize_sparc_sol2_tdep prototype.
	* sparc-tdep.c: Remove _initialize_sparc_tdep prototype.
	* sparc64-fbsd-nat.c: Remove _initialize_sparc64fbsd_nat
	prototype.
	* sparc64-fbsd-tdep.c: Remove _initialize_sparc64fbsd_tdep
	prototype.
	* sparc64-linux-nat.c: Remove _initialize_sparc64_linux_nat
	prototype.
	* sparc64-linux-tdep.c: Remove _initialize_sparc64_linux_tdep
	prototype.
	* sparc64-nat.c: Remove _initialize_sparc64_nat prototype.
	* sparc64-nbsd-nat.c: Remove _initialize_sparc64nbsd_nat
	prototype.
	* sparc64-nbsd-tdep.c: Remove _initialize_sparc64nbsd_tdep
	prototype.
	* sparc64-obsd-nat.c: Remove _initialize_sparc64obsd_nat
	prototype.
	* sparc64-obsd-tdep.c: Remove _initialize_sparc64obsd_tdep
	prototype.
	* sparc64-sol2-tdep.c: Remove _initialize_sparc64_sol2_tdep
	prototype.
	* spu-linux-nat.c: Remove _initialize_spu_nat prototype.
	* spu-multiarch.c: Remove _initialize_spu_multiarch prototype.
	* spu-tdep.c: Remove _initialize_spu_tdep prototype.
	* stabsread.c: Remove _initialize_stabsread prototype.
	* stack.c: Remove _initialize_stack prototype.
	* stap-probe.c: Remove _initialize_stap_probe prototype.
	* std-regs.c: Remove _initialize_frame_reg prototype.
	* symfile-debug.c: Remove _initialize_symfile_debug prototype.
	* symfile-mem.c: Remove _initialize_symfile_mem prototype.
	* symfile.c: Remove _initialize_symfile prototype.
	* symmisc.c: Remove _initialize_symmisc prototype.
	* symtab.c: Remove _initialize_symtab prototype.
	* target-dcache.c: Remove _initialize_target_dcache prototype.
	* target-descriptions.c: Remove _initialize_target_descriptions
	prototype.
	* thread.c: Remove _initialize_thread prototype.
	* tic6x-linux-tdep.c: Remove _initialize_tic6x_linux_tdep
	prototype.
	* tic6x-tdep.c: Remove _initialize_tic6x_tdep prototype.
	* tilegx-linux-nat.c: Remove _initialize_tile_linux_nat prototype.
	* tilegx-linux-tdep.c: Remove _initialize_tilegx_linux_tdep
	prototype.
	* tilegx-tdep.c: Remove _initialize_tilegx_tdep prototype.
	* tracefile-tfile.c: Remove _initialize_tracefile_tfile prototype.
	* tracefile.c: Remove _initialize_tracefile prototype.
	* tracepoint.c: Remove _initialize_tracepoint prototype.
	* tui/tui-hooks.c: Remove _initialize_tui_hooks prototype.
	* tui/tui-interp.c: Remove _initialize_tui_interp prototype.
	* tui/tui-layout.c: Remove _initialize_tui_layout prototype.
	* tui/tui-regs.c: Remove _initialize_tui_regs prototype.
	* tui/tui-stack.c: Remove _initialize_tui_stack prototype.
	* tui/tui-win.c: Remove _initialize_tui_win prototype.
	* tui/tui.c: Remove _initialize_tui prototype.
	* typeprint.c: Remove _initialize_typeprint prototype.
	* user-regs.c: Remove _initialize_user_regs prototype.
	* utils.c: Remove _initialize_utils prototype.
	* v850-tdep.c: Remove _initialize_v850_tdep prototype.
	* valarith.c: Remove _initialize_valarith prototype.
	* valops.c: Remove _initialize_valops prototype.
	* valprint.c: Remove _initialize_valprint prototype.
	* value.c: Remove _initialize_values prototype.
	* varobj.c: Remove _initialize_varobj prototype.
	* vax-bsd-nat.c: Remove _initialize_vaxbsd_nat prototype.
	* vax-nbsd-tdep.c: Remove _initialize_vaxnbsd_tdep prototype.
	* vax-tdep.c: Remove _initialize_vax_tdep prototype.
	* windows-nat.c: Remove _initialize_windows_nat,
	_initialize_check_for_gdb_ini, and _initialize_loadable
	prototypes.
	* windows-tdep.c: Remove _initialize_windows_tdep prototype.
	* xcoffread.c: Remove _initialize_xcoffread prototype.
	* xml-support.c: Remove _initialize_xml_support prototype.
	* xstormy16-tdep.c: Remove _initialize_xstormy16_tdep prototype.
	* xtensa-linux-nat.c: Remove _initialize_xtensa_linux_nat
	prototype.
	* xtensa-linux-tdep.c: Remove _initialize_xtensa_linux_tdep
	prototype.
	* xtensa-tdep.c: Remove _initialize_xtensa_tdep prototype.
 2017-09-09 11:02:37 -07:00
Pedro Alves
51abb42130 Kill init_sal 
Instead, make symtab_and_line initialize its members itself.  Many
symtab_and_line declarations are moved to where the object is
initialized at the same time both for clarity and to avoid double
initialization.  A few functions, like e.g., find_frame_sal are
adjusted to return the sal using normal function return instead of an
output parameter likewise to avoid having to default-construct a sal
and then immediately have the object overwritten.

gdb/ChangeLog:
2017-09-04  Pedro Alves  <palves@redhat.com>

	* ada-lang.c (is_known_support_routine): Move sal declaration to
	where it is initialized.
	* breakpoint.c (create_internal_breakpoint, init_catchpoint)
	(parse_breakpoint_sals, decode_static_tracepoint_spec)
	(clear_command, update_static_tracepoint): Remove init_sal
	references.  Move declarations closer to initializations.
	* cli/cli-cmds.c (list_command): Move sal declarations closer to
	initializations.
	* elfread.c (elf_gnu_ifunc_resolver_stop): Remove init_sal
	references.  Move sal declarations closer to initializations.
	* frame.c (find_frame_sal): Return a symtab_and_line via function
	return instead of output parameter.  Remove init_sal references.
	* frame.h (find_frame_sal): Return a symtab_and_line via function
	return instead of output parameter.
	* guile/scm-frame.c (gdbscm_frame_sal): Adjust.
	* guile/scm-symtab.c (stscm_make_sal_smob): Use in-place new
	instead of memset.
	(gdbscm_find_pc_line): Remove init_sal reference.
	* infcall.c (call_function_by_hand_dummy): Remove init_sal
	references.  Move declarations closer to initializations.
	* infcmd.c (set_step_frame): Update.  Move declarations closer to
	initializations.
	(finish_backward): Remove init_sal references.  Move declarations
	closer to initializations.
	* infrun.c (process_event_stop_test, handle_step_into_function)
	(insert_hp_step_resume_breakpoint_at_frame)
	(insert_step_resume_breakpoint_at_caller): Likewise.
	* linespec.c (create_sals_line_offset, decode_digits_ordinary)
	(symbol_to_sal): Likewise.
	* probe.c (parse_probes_in_pspace): Remove init_sal reference.
	* python/py-frame.c (frapy_find_sal): Move sal declaration closer
	to its initialization.
	* reverse.c (save_bookmark_command): Use new/delete.  Remove
	init_sal references.  Move declarations closer to initializations.
	* source.c (get_current_source_symtab_and_line): Remove brace
	initialization.
	(set_current_source_symtab_and_line): Now takes the sal by const
	reference.  Remove brace initialization.
	(line_info): Remove init_sal reference.
	* source.h (set_current_source_symtab_and_line): Now takes a
	symtab_and_line via const reference.
	* stack.c (set_current_sal_from_frame): Adjust.
	(print_frame_info): Adjust.
	(get_last_displayed_sal): Return the sal via function return
	instead of via output parameter.  Simplify.
	(frame_info): Adjust.
	* stack.h (get_last_displayed_sal): Return the sal via function
	return instead of via output parameter.
	* symtab.c (init_sal): Delete.
	(find_pc_sect_line): Remove init_sal references.  Move
	declarations closer to initializations.
	(find_function_start_sal): Remove init_sal references.  Move
	declarations closer to initializations.
	* symtab.h (struct symtab_and_line): In-class initialize all
	fields.
	* tracepoint.c (set_traceframe_context)
	(print_one_static_tracepoint_marker): Remove init_sal references.
	Move declarations closer to initializations.
	* tui/tui-disasm.c (tui_show_disassem_and_update_source): Adjust.
	* tui/tui-stack.c (tui_show_frame_info): Adjust.  Move
	declarations closer to initializations.
	* tui/tui-winsource.c (tui_update_source_window_as_is): Remove
	init_sal references.  Adjust.
 2017-09-04 17:11:45 +01:00
Alan Hayward
9f7fb0aa2b Remove a MAX_REGISTER_SIZE from frame.c 
gdb/
	* frame.c (frame_unwind_register_signed): Use
	frame_unwind_register_value.
 2017-06-06 16:34:20 +01:00
Yao Qi
b77b02a5ca Add unit test to gdbarch methods register_to_value and value_to_register 
This patch adds one unit test for gdbarch methods register_to_value and
value_to_register.  The test pass different combinations of {regnu, type}
to gdbarch_register_to_value and gdbarch_value_to_register.  In order
to do the test, add a new function create_new_frame to create a fake
frame.  It can be improved after we converted frame_info to class.

In order to isolate regcache (from target_ops operations on writing
registers, like target_store_registers), the sub-class of regcache in the
test override raw_write.  Also, in order to get the right regcache from
get_thread_arch_aspace_regcache, the sub-class of regcache inserts itself
to current_regcache.

Suppose I incorrectly modified the size of buffer as below,

@@ -1228,7 +1228,7 @@ ia64_register_to_value (struct frame_info *frame, int regnum,
                        int *optimizedp, int *unavailablep)
 {
   struct gdbarch *gdbarch = get_frame_arch (frame);
-  gdb_byte in[MAX_REGISTER_SIZE];
+  gdb_byte in[1];

   /* Convert to TYPE.  */
   if (!get_frame_register_bytes (frame, regnum, 0,

build GDB with "-fsanitize=address" and run unittest.exp, asan can detect
such error

==2302==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7fff98193870 at pc 0xbd55ea bp 0x7fff981935a0 sp 0x7fff98193598
WRITE of size 16 at 0x7fff98193870 thread T0
    #0 0xbd55e9 in frame_register_unwind(frame_info*, int, int*, int*, lval_type*, unsigned long*, int*, unsigned char*) /home/yao/SourceCode/gnu/gdb/git/gdb/frame.c:1119
    #1 0xbd58c8 in frame_register(frame_info*, int, int*, int*, lval_type*, unsigned long*, int*, unsigned char*) /home/yao/SourceCode/gnu/gdb/git/gdb/frame.c:1147
    #2 0xbd6e25 in get_frame_register_bytes(frame_info*, int, unsigned long, int, unsigned char*, int*, int*) /home/yao/SourceCode/gnu/gdb/git/gdb/frame.c:1427
    #3 0x70080a in ia64_register_to_value /home/yao/SourceCode/gnu/gdb/git/gdb/ia64-tdep.c:1236
    #4 0xbf570e in gdbarch_register_to_value(gdbarch*, frame_info*, int, type*, unsigned char*, int*, int*) /home/yao/SourceCode/gnu/gdb/git/gdb/gdbarch.c:2619
    #5 0xc05975 in register_to_value_test /home/yao/SourceCode/gnu/gdb/git/gdb/gdbarch-selftests.c:131

Or, even if GDB is not built with asan, GDB just crashes.

*** stack smashing detected ***: ./gdb terminated
Aborted (core dumped)

gdb:

2017-05-24  Yao Qi  <yao.qi@linaro.org>

	* Makefile.in (SFILES): Add gdbarch-selftests.c.
	(COMMON_OBS): Add gdbarch-selftests.o.
	* frame.c [GDB_SELF_TESTS] (create_new_frame): New function.
	* frame.h [GDB_SELF_TESTS] (create_new_frame): Declare.
	* gdbarch-selftests.c: New file.
	* regcache.h (regcache) <~regcache>: Mark it virtual if
	GDB_SELF_TEST.
	<raw_write>: Likewise.
 2017-05-24 22:15:23 +01:00
Yao Qi
2cad08ea7d Use frame_unwind_register_value in frame_unwind_register_unsigned 
gdb:

2017-04-05  Yao Qi  <yao.qi@linaro.org>

	* frame.c (frame_unwind_register_unsigned): Call
	frame_unwind_register_value.
 2017-04-05 14:55:43 +01:00
Alan Hayward
db3a1dc7c9 Remove MAX_REGISTER_SIZE from frame.c 
gdb/
	* frame.c (get_frame_register_bytes): Unwind using value.
	(put_frame_register_bytes): Likewise.
 2017-04-04 08:42:30 +01:00
Joel Brobecker
61baf725ec update copyright year range in GDB files 
This applies the second part of GDB's End of Year Procedure, which
updates the copyright year range in all of GDB's files.

gdb/ChangeLog:

        Update copyright year range in all GDB files.
 2017-01-01 10:52:34 +04:00
Yao Qi
7c2ba67e6a Assert on lval_register 
This patch adds asserts where the value's lval must be lval_register.
This triggers an error in frame_register_unwind because VALUE_REGNUM
is used but value's lval is not lval_register.

This also reveals a design issue in frame_register_unwind, that is
arguments addrp and realnump are mutually exclusive, we either use
addrp (for lval_memory), or use realnump (for lval_register).  This
can be done in a separate patch.

gdb:

2016-12-06  Yao Qi  <yao.qi@linaro.org>

	* frame.c (frame_register_unwind): Set *realnump if *lvalp is
	lval_register.
	* value.c (deprecated_value_next_frame_id_hack): Assert
	value->lval is lval_register.
	(deprecated_value_regnum_hack): Likewise.
 2016-12-06 14:25:51 +00:00
Kevin Buettner
256ae5dbc7 Stash frame id of current frame before stashing frame id for previous frame 
This patch ensures that the frame id for the current frame is stashed
before that of the previous frame (to the current frame).

First, it should be noted that the frame id for the current frame is
not stashed by get_current_frame().  The current frame's frame id is
lazily computed and stashed via calls to get_frame_id().  However,
it's possible for get_prev_frame() to be called without first stashing
the current frame.

The frame stash is used not only to speed up frame lookups, but
also to detect cycles.  When attempting to compute the frame id
for a "previous" frame (in get_prev_frame_if_no_cycle), a cycle
is detected if the computed frame id is already in the stash.

If it should happen that a previous frame id is stashed which should
represent a cycle for the current frame, then an assertion failure
will trigger should get_frame_id() be later called to determine
the frame id for the current frame.

As of late 2016, with the "Tweak meaning of VALUE_FRAME_ID" patch in
place, this actually occurs when running the
gdb.dwarf2/dw2-dup-frame.exp test.  While attempting to generate a
backtrace, the python frame filter code is invoked, leading to
frame_info_to_frame_object() (in python/py-frame.c) being called.
That function will potentially call get_prev_frame() before
get_frame_id() is called.  The call to get_prev_frame() can eventually
end up in get_prev_frame_if_no_cycle() which, in turn, calls
compute_frame_id(), after which the frame id is stashed for the
previous frame.

If the frame id for the current frame is stashed, the cycle detection
code (which relies on the frame stash) in get_prev_frame_if_no_cycle()
will be triggered for a cycle starting with the current frame.  If the
current frame's id is not stashed, the cycle detecting code can't
operate as designed.  Instead, when get_frame_id() is called on the
current frame at some later point, the current frame's id will found
to be already in the stash, triggering an assertion failure.

Below is an in depth examination of the failure which lead to this change.
I've shortened pathnames for brevity and readability.

Here's the portion of the log file showing the failure/internal error:

(gdb) break stop_frame
Breakpoint 1 at 0x40059a: file dw2-dup-frame.c, line 22.
(gdb) run
Starting program: testsuite/outputs/gdb.dwarf2/dw2-dup-frame/dw2-dup-frame

Breakpoint 1, stop_frame () at dw2-dup-frame.c:22
22	}
(gdb) bt
gdb/frame.c:544: internal-error: frame_id get_frame_id(frame_info*): Assertion `stashed' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)
FAIL: gdb.dwarf2/dw2-dup-frame.exp: backtrace from stop_frame (GDB internal error)

Here's a partial backtrace from the internal error, showing the frames
which I think are relevant, plus several extra to provide context:

    #0  internal_error (
	file=0x932b98 "gdb/frame.c", line=544,
	fmt=0x932b20 "%s: Assertion `%s' failed.")
	at gdb/common/errors.c:54
    #1  0x000000000072207e in get_frame_id (fi=0xe5a760)
	at gdb/frame.c:544
    #2  0x00000000004eb50d in frame_info_to_frame_object (frame=0xe5a760)
	at gdb/python/py-frame.c:390
    #3  0x00000000004ef5be in bootstrap_python_frame_filters (frame=0xe5a760,
	frame_low=0, frame_high=-1)
	at gdb/python/py-framefilter.c:1453
    #4  0x00000000004ef7a9 in gdbpy_apply_frame_filter (
	extlang=0x8857e0 <extension_language_python>, frame=0xe5a760, flags=7,
	args_type=CLI_SCALAR_VALUES, out=0xf6def0, frame_low=0, frame_high=-1)
	at gdb/python/py-framefilter.c:1548
    #5  0x00000000005f2c5a in apply_ext_lang_frame_filter (frame=0xe5a760,
	flags=7, args_type=CLI_SCALAR_VALUES, out=0xf6def0, frame_low=0,
	frame_high=-1)
	at gdb/extension.c:572
    #6  0x00000000005ea896 in backtrace_command_1 (count_exp=0x0, show_locals=0,
	no_filters=0, from_tty=1)
	at gdb/stack.c:1834

Examination of the code in frame_info_to_frame_object(), which is in
python/py-frame.c, is key to understanding this problem:

      if (get_prev_frame (frame) == NULL
	  && get_frame_unwind_stop_reason (frame) != UNWIND_NO_REASON
	  && get_next_frame (frame) != NULL)
	{
	  frame_obj->frame_id = get_frame_id (get_next_frame (frame));
	  frame_obj->frame_id_is_next = 1;
	}
      else
	{
	  frame_obj->frame_id = get_frame_id (frame);
	  frame_obj->frame_id_is_next = 0;
	}

I will first note that the frame id for frame has not been computed yet.  (This
was verified by placing a breakpoint on compute_frame_id().)

The call to get_prev_frame() causes the the frame id to (eventually) be
computed for the previous frame.  Here's a backtrace showing how we
get there:

    #0  compute_frame_id (fi=0x10e2810)
	at gdb/frame.c:496
    #1  0x0000000000724a67 in get_prev_frame_if_no_cycle (this_frame=0xe5a760)
	at gdb/frame.c:1871
    #2  0x0000000000725136 in get_prev_frame_always_1 (this_frame=0xe5a760)
	at gdb/frame.c:2045
    #3  0x000000000072516b in get_prev_frame_always (this_frame=0xe5a760)
	at gdb/frame.c:2061
    #4  0x000000000072570f in get_prev_frame (this_frame=0xe5a760)
	at gdb/frame.c:2303
    #5  0x00000000004eb471 in frame_info_to_frame_object (frame=0xe5a760)
	at gdb/python/py-frame.c:381

For this particular case, we end up in the else clause of the code above
which calls get_frame_id (frame).  It's at this point that the frame id
for frame is computed.  Again, here's a backtrace:

    #0  compute_frame_id (fi=0xe5a760)
	at gdb/frame.c:496
    #1  0x000000000072203d in get_frame_id (fi=0xe5a760)
	at gdb/frame.c:539
    #2  0x00000000004eb50d in frame_info_to_frame_object (frame=0xe5a760)
	at gdb/python/py-frame.c:390

The test in question, dw2-dup-frame.exp, deliberately creates a broken
(cyclic) stack.  So, in this instance, the frame id for the prev
`frame' will be the same as that for `frame'.  But that particular
frame id ended up in the stash during the previous frame operation.
When, just a few lines later, we compute the frame id for `frame', the
id in question is already in the stash, thus triggering the assertion
failure.

I considered two other solutions to solving this problem:

We could prevent get_prev_frame() from being called before
get_frame_id() in frame_info_to_frame_object().  (See above for the
snippet of code where this happens.) A call to get_frame_id (frame)
could be placed ahead of that code snippet above.  I have tested this
approach and, while it does work, I can't be certain that
get_prev_frame() isn't called ahead of stashing the current frame
somewhere else in GDB, but in a less obvious way.

Another approach is to stash the current frame's id by calling
get_frame_id() in get_current_frame().  This approach is conceptually
simpler, but when importing a python unwinder, has the unwelcome side
effect of causing the unwinder to be called during import.

A cleaner looking fix would be to place this code after code
corresponding to the "Don't compute the frame id of the current frame
yet..." comment in get_prev_frame_if_no_cycle().  Sadly, this does not
work though; by the time we get to this point, the frame state for the
prev frame has been modified just enough to cause an internal error to
occur when attempting to compute the (current) frame id for inline
frames.  (The unexpected failure count increases by roughly 130
failures.)  Therefore, I decided to place it as early as possible
in get_prev_frame().

gdb/ChangeLog:

	* frame.c (get_prev_frame): Stash frame id for current frame
	prior to computing frame id for previous frame.
 2016-11-16 11:42:24 -07:00
Kevin Buettner
41b56feb50 Change meaning of VALUE_FRAME_ID; rename to VALUE_NEXT_FRAME_ID 
The VALUE_FRAME_ID macro provides access to a member in struct value
that's used to hold the frame id that's used when determining a
register's value or when assigning to a register.  The underlying
member has a long and obscure name.  I won't refer to it here, but
will simply refer to VALUE_FRAME_ID as if it's the struct value member
instead of being a convenient macro.

At the moment, without this patch in place, VALUE_FRAME_ID is set in
value_of_register_lazy() and several other locations to hold the frame
id of the frame passed to those functions.

VALUE_FRAME_ID is used in the lval_register case of
value_fetch_lazy().  To fetch the register's value, it calls
get_frame_register_value() which, in turn, calls
frame_unwind_register_value() with frame->next.

A python based unwinder may wish to determine the value of a register
or evaluate an expression containing a register.  When it does this,
value_fetch_lazy() will be called under some circumstances.  It will
attempt to determine the frame id associated with the frame passed to
it.  In so doing, it will end up back in the frame sniffer of the very
same python unwinder that's attempting to learn the value of a
register as part of the sniffing operation.  This recursion is not
desirable.

As noted above, when value_fetch_lazy() wants to fetch a register's
value, it does so (indirectly) by unwinding from frame->next.

With this in mind, a solution suggests itself:  Change VALUE_FRAME_ID
to hold the frame id associated with the next frame.  Then, when it
comes time to obtain the value associated with the register, we can
simply unwind from the frame corresponding to the frame id stored in
VALUE_FRAME_ID.  This neatly avoids the python unwinder recursion
problem by changing when the "next" operation occurs.  Instead of the
"next" operation occuring when the register value is fetched, it
occurs earlier on when assigning a frame id to VALUE_FRAME_ID.
(Thanks to Pedro for this suggestion.)

This patch implements this idea.

It builds on the patch "Distinguish sentinel frame from null frame".
Without that work in place, it's necessary to check for null_id at
several places and then obtain the sentinel frame.

It also renames most occurences of VALUE_FRAME_ID to
VALUE_NEXT_FRAME_ID to reflect the new meaning of this field.

There are several uses of VALUE_FRAME_ID which were not changed.  In
each case, the original meaning of VALUE_FRAME_ID is required to get
correct results.  In all but one of these uses, either
put_frame_register_bytes() or get_frame_register_bytes() is being
called with the frame value obtained from VALUE_FRAME_ID.  Both of
these functions perform some unwinding by performing a "->next"
operation on the frame passed to it.  If we were to use the new
VALUE_NEXT_FRAME_ID macro, this would effectively do two "->next"
operations, which is not what we want.

The VALUE_FRAME_ID macro has been redefined in terms of
VALUE_NEXT_FRAME_ID.  It simply fetches the previous frame's id,
providing this id as the value of the macro.

gdb/ChangeLog:

	* value.h (VALUE_FRAME_ID): Rename to VALUE_NEXT_FRAME_ID. Update
	comment.  Create new VALUE_FRAME_ID which is defined in terms of
	VALUE_NEXT_FRAME_ID.
	(deprecated_value_frame_id_hack): Rename to
	deprecated_value_next_frame_id_hack.
	* dwarf2loc.c, findvar.c, frame-unwind.c, sentinel-frame.c,
	valarith.c, valops.c, value.c: Adjust nearly all occurences of
	VALUE_FRAME_ID to VALUE_NEXT_FRAME_ID.	Add comments for those
	which did not change.
	* value.c (struct value): Rename frame_id field to next_frame_id.
	Update comment.
	(deprecated_value_frame_id_hack): Rename to
	deprecated_value_next_frame_id_hack.
	(value_fetch_lazy): Call frame_unwind_register_value()
	instead of get_frame_register_value().
	* frame.c (get_prev_frame_id_by_id): New function.
	* frame.h (get_prev_frame_id_by_id): Declare.
	* dwarf2loc.c (dwarf2_evaluate_loc_desc_full): Make
	VALUE_NEXT_FRAME_ID refer to the next frame.
	* findvar.c (value_of_register_lazy): Likewise.
	(default_value_from_register): Likewise.
	(value_from_register): Likewise.
	* frame_unwind.c (frame_unwind_got_optimized): Likewise.
	* sentinel-frame.c (sentinel_frame_prev_register): Likewise.
	* value.h (VALUE_FRAME_ID): Update comment describing this macro.
 2016-11-16 11:38:19 -07:00
Kevin Buettner
df433d3162 Distinguish sentinel frame from null frame. 
This patch replaces the `current_frame' static global in frame.c with
`sentinel_frame'.  It also makes the sentinel frame id unique and
different from the null frame.

By itself, there is not much point to this patch, but it makes
the code cleaner for the VALUE_FRAME_ID changes in another patch.
Since we now allow "navigation" to the sentinel frame, it removes
the necessity of adding special cases to other parts of GDB.

Note that a new function, get_next_frame_sentinel_okay, is introduced
in this patch.  It will be used by the VALUE_FRAME_ID changes that
I've made.

Thanks to Pedro Alves for this suggestion.

gdb/ChangeLog:

    	* frame.h (enum frame_id_stack_status): Add FID_STACK_SENTINEL.
    	(struct frame_id): Increase number of bits required for storing
    	stack status to 3 from 2.
    	(sentinel_frame_id): New declaration.
    	(get_next_frame_sentinel_okay): Declare.
    	(frame_find_by_id_sentinel_okay): Declare.
    	* frame.c (current_frame): Rename this static global to...
    	(sentinel_frame): ...this static global, which has also been
    	moved an earlier location in the file.
    	(fprint_frame_id): Add case for sentinel frame id.
    	(get_frame_id): Return early for sentinel frame.
    	(sentinel_frame_id): Define.
    	(frame_find_by_id): Add case for sentinel_frame_id.
    	(create_sentinel_frame): Use sentinel_frame_id for this_id.value
    	instead of null_frame_id.
    	(get_current_frame): Add local declaration for `current_frame'.
    	Remove local declaration for `sentinel_frame.'
    	(get_next_frame_sentinel_okay): New function.
    	(reinit_frame_cache): Use `sentinel_frame' in place of
    	`current_frame'.
 2016-11-16 11:37:11 -07:00
Pedro Alves
f245535cf5 Fix PR19927: Avoid unwinder recursion if sniffer uses calls parse_and_eval 
This fixes the problem exercised by Kevin's test at:

 https://sourceware.org/ml/gdb-patches/2016-08/msg00216.html

This was originally exposed by the OpenJDK Python-based unwinder.

If an unwinder attempts to call parse_and_eval from within its
sniffing method, GDB's unwinding machinery enters infinite recursion.
However, parse_and_eval is a pretty reasonable thing to call, because
Python/Scheme-based unwinders will often need to read globals out of
inferior memory.  The recursion happens because:

- get_current_frame() is called soon after the target stops.

- current_frame is NULL, and so we unwind it from the sentinel frame
  (which is special and has level == -1).

- We reach get_prev_frame_if_no_cycle, which does cycle detection
  based on frame id, and thus tries to compute the frame id of the new
  frame.

- Frame id computation requires an unwinder, so we go through all
  unwinder sniffers trying to see if one accepts the new frame (the
  current frame).

- the unwinder's sniffer calls parse_and_eval().

- parse_and_eval depends on the selected frame/block, and if not set
  yet, the selected frame is set to the current frame.

- get_current_frame () is called again.  current_frame is still NULL,
  so ...

- recurse forever.


In Kevin's test at:

 https://sourceware.org/ml/gdb-patches/2016-08/msg00216.html

gdb doesn't recurse forever simply because the Python unwinder
contains code to detect and stop the recursion itself.  However, GDB
goes downhill from here, e.g., by showing the sentinel frame as
current frame (note the -1):

    Breakpoint 1, ccc (arg=<unavailable>) at py-recurse-unwind.c:23
    23      }
    (gdb) bt
    #-1 ccc (arg=<unavailable>) at py-recurse-unwind.c:23
    Backtrace stopped: previous frame identical to this frame (corrupt stack?)

That "-1" frame level comes from this:

      if (catch_exceptions (current_uiout, unwind_to_current_frame,
			    sentinel_frame, RETURN_MASK_ERROR) != 0)
	{
	  /* Oops! Fake a current frame?  Is this useful?  It has a PC
             of zero, for instance.  */
	  current_frame = sentinel_frame;
	}

which is bogus.  It's never correct to set the current frame to the
sentinel frame.  The only reason this has survived so long is that
getting here normally indicates something wrong has already happened
before and we fix that.  And this case is no exception -- it doesn't
really matter how precisely we managed to get to that bogus code (it
has to do with the the stash), because anything after recursion
happens is going to be invalid.

So the fix is to avoid the recursion in the first place.

Observations:

 #1 - The recursion happens because we try to do cycle detection from
      within get_prev_frame_if_no_cycle.  That requires computing the
      frame id of the frame being unwound, and that itself requires
      calling into the unwinders.

 #2 - But, the first time we're unwinding from the sentinel frame,
      when we reach get_prev_frame_if_no_cycle, there's no frame chain
      at all yet:

      - current_frame is NULL.
      - the frame stash is empty.

Thus, there's really no need to do cycle detection the first time we
reach get_prev_frame_if_no_cycle, when building the current frame.

So we can break the recursion by making get_current_frame call a
simplified version of get_prev_frame_if_no_cycle that results in
setting the current_frame global _before_ computing the current
frame's id.

But, we can go a little bit further.  As there's really no reason
anymore to compute the current frame's frame id immediately, we can
defer computing it to when some caller of get_current_frame might need
it.  This was actually how the frame id was computed for all frames
before the stash-based cycle detection was added.  So in a way, this
patch reintroduces the lazy frame id computation, but unlike before,
only for the case of the current frame, which turns out to be special.

This lazyness, however, requires adjusting
gdb.python/py-unwind-maint.exp, because that assumes unwinders are
immediately called as side effect of some commands.  I didn't see a
need to preserve the behavior expected by that test (all it would take
is call get_frame_id inside get_current_frame), so I adjusted the
test.

gdb/ChangeLog:
2016-09-05  Pedro Alves  <palves@redhat.com>

	PR backtrace/19927
	* frame.c (get_frame_id): Compute the frame id if not computed
	yet.
	(unwind_to_current_frame): Delete.
	(get_current_frame): Use get_prev_frame_always_1 to get the
	current frame and assert that that always succeeds.
	(get_prev_frame_if_no_cycle): Skip cycle detection if returning
	the current frame.

gdb/testsuite/ChangeLog:
2016-09-05  Pedro Alves  <palves@redhat.com>

	PR backtrace/19927
	* gdb.python/py-unwind-maint.exp: Adjust tests to not expect that
	unwinders are immediately called as side effect of "source" or
	"disable unwinder" commands.
	* gdb.python/py-recurse-unwind.exp: Remove setup_kfail calls.
 2016-09-05 18:41:38 +01:00
Yao Qi
7eb895307f Skip unwritable frames in command "finish" 
Nowadays, GDB can't insert breakpoint on the return address of the
exception handler on ARM M-profile, because the address is a magic
one 0xfffffff9,

 (gdb) bt
 #0  CT32B1_IRQHandler () at ../src/timer.c:67
 #1  <signal handler called>
 #2  main () at ../src/timer.c:127

(gdb) info frame
Stack level 0, frame at 0x200ffa8:
 pc = 0x4ec in CT32B1_IRQHandler (../src/timer.c:67); saved pc = 0xfffffff9
 called by frame at 0x200ffc8
 source language c.
 Arglist at 0x200ffa0, args:
 Locals at 0x200ffa0, Previous frame's sp is 0x200ffa8
 Saved registers:
  r7 at 0x200ffa0, lr at 0x200ffa4

(gdb) x/x 0xfffffff9
0xfffffff9:     Cannot access memory at address 0xfffffff9

(gdb) finish
Run till exit from #0  CT32B1_IRQHandler () at ../src/timer.c:67
Ed:15: Target error from Set break/watch: Et:96: Pseudo-address (0xFFFFFFxx) for EXC_RETURN is invalid (GDB error?)

Warning:
Cannot insert hardware breakpoint 0.
Could not insert hardware breakpoints:
You may have requested too many hardware breakpoints/watchpoints.

Command aborted.

even some debug probe can't set hardware breakpoint on the magic
address too,

(gdb) hbreak *0xfffffff9
Hardware assisted breakpoint 2 at 0xfffffff9
(gdb) c
Continuing.
Ed:15: Target error from Set break/watch: Et:96: Pseudo-address (0xFFFFFFxx) for EXC_RETURN is invalid (GDB error?)

Warning:
Cannot insert hardware breakpoint 2.
Could not insert hardware breakpoints:
You may have requested too many hardware breakpoints/watchpoints.

Command aborted.

The problem described above is quite similar to PR 8841, in which GDB
can't set breakpoint on signal trampoline, which is mapped to a read-only
page by kernel.  The rationale of this patch is to skip "unwritable"
frames when looking for caller frames in command "finish", and a new
gdbarch method code_of_frame_writable is added.  This patch fixes
the problem on ARM cortex-m target, but it can be used to fix
PR 8841 too.

gdb:

2016-05-10  Yao Qi  <yao.qi@arm.com>

	* arch-utils.c (default_code_of_frame_writable): New function.
	* arch-utils.h (default_code_of_frame_writable): Declare.
	* arm-tdep.c (arm_code_of_frame_writable): New function.
	(arm_gdbarch_init): Install gdbarch method
	code_of_frame_writable if the target is M-profile.
	* frame.c (skip_unwritable_frames): New function.
	* frame.h (skip_unwritable_frames): Declare.
	* gdbarch.sh (code_of_frame_writable): New.
	* gdbarch.c, gdbarch.h: Re-generated.
	* infcmd.c (finish_command): Call skip_unwritable_frames.
 2016-05-23 17:32:56 +01:00
Markus Metzger
33b4777ca1 btrace, frame: fix crash in get_frame_type 
In skip_artificial_frames we repeatedly call get_prev_frame_always until we get
a non-inline and non-tailcall frame assuming that there must be such a frame
eventually.

For record targets, however, we may have a frame chain that consists only of
artificial frames.  This leads to a crash in get_frame_type when dereferencing a
NULL frame pointer.

Change skip_artificial_frames and skip_tailcall_frames to return NULL in such a
case and modify each caller to cope with a NULL return.

In frame_unwind_caller_pc and frame_unwind_caller_arch, we simply assert that
the returned value is not NULL.  Their caller was supposed to check
frame_unwind_caller_id before calling those functions.

In other cases, we thrown an error.

In infcmd further move the skip_tailcall_frames call to the forward-stepping
case since we don't need a frame for reverse execution and we don't want to fail
because of that.  Reverse-finish does make sense for a tailcall frame.

gdb/
	* frame.h (skip_tailcall_frames): Update comment.
	* frame.c (skip_artificial_frames, skip_tailcall_frames): Return NULL
	if only	artificial frames are found.  Update comment.
	(frame_unwind_caller_id): Handle NULL return.
	(frame_unwind_caller_pc, frame_unwind_caller_arch): Assert that
	skip_artificial_frames does not return NULL.
	(frame_pop): Add an error if only tailcall frames are found.
	* infcmd.c (finish_command): Move skip_tailcall_frames call into forward-
	execution case.  Add an error if only tailcall frames are found.

testsuite/
	* gdb.btrace/tailcall-only.exp: New.
	* gdb.btrace/tailcall-only.c: New.
	* gdb.btrace/x86_64-tailcall-only.S: New.
	* gdb.btrace/i686-tailcall-only.S: New.
 2016-02-12 09:49:48 +01:00
Markus Metzger
2f3ef606b9 frame: add skip_tailcall_frames 
Add a new function skip_tailcall_frames to skip TAILCALL_FRAME frames.

gdb/
	* frame.h (skip_tailcall_frames): New.
	* frame.c (skip_tailcall_frames): New.
	(frame_pop): Call skip_tailcall_frames.
	* infcmd.c (finish_command): Call skip_tailcall_frames.
 2016-02-12 09:44:42 +01:00
Pedro Alves
a911d87ad7 Fix PR19388: Can't access $_siginfo in breakpoint (catch signal) condition 
This commit merges both the registers and $_siginfo "thread
running/executing" checks into a single function.

Accessing $_siginfo from a "catch signal" breakpoint condition doesn't
work.  The condition always fails with "Selected thread is running":

 (gdb) catch signal
 Catchpoint 3 (standard signals)
 (gdb)
 condition $bpnum $_siginfo.si_signo == 5
 (gdb) continue
 Continuing.
 Error in testing breakpoint condition:
 Selected thread is running.

 Catchpoint 3 (signal SIGUSR1), 0x0000003615e35877 in __GI_raise (sig=10) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
 56        return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
 (gdb)

When accessing the $_siginfo object, we check whether the thread is
marked running (external/public) state and refuse the access if so.
This is so "print $_siginfo" at the prompt fails nicelly when the
current thread is running.  While evaluating breakpoint conditionals,
we haven't decided yet whether the thread is going to stop, so
is_running still returns true, and we thus always error out.

Evaluating an expression that requires registers access is really
conceptually the same -- we could think of $_siginfo as a pseudo
register.  However, in that case we check whether the thread is marked
executing (internal/private state), not running (external/public
state).  Changing the $_siginfo validation to check is_executing as
well fixes the bug in question.

Note that checking is_executing is not fully correct, not even for
registers.  See PR 19389.  However, I think this is the lesser of two
evils and ends up as an improvement.  We at least now have a single
place to fix.

Tested on x86_64 GNU/Linux.

gdb/ChangeLog:
2016-01-13  Pedro Alves  <palves@redhat.com>

	PR breakpoints/19388
	* frame.c (get_current_frame): Use validate_registers_access.
	* gdbthread.h (validate_registers_access): Declare.
	* infrun.c (validate_siginfo_access): Delete.
	(siginfo_value_read, siginfo_value_write): Use
	validate_registers_access.
	* thread.c (validate_registers_access): New function.

gdb/testsuite/ChangeLog:
2016-01-13  Pedro Alves  <palves@redhat.com>

	PR breakpoints/19388
	* gdb.base/catch-signal-siginfo-cond.c: New file.
	* gdb.base/catch-signal-siginfo-cond.exp: New file.
 2016-01-13 10:40:33 +00:00
Joel Brobecker
618f726fcb GDB copyright headers update after running GDB's copyright.py script. 
gdb/ChangeLog:

        Update year range in copyright notice of all files.
 2016-01-01 08:43:22 +04:00
Simon Marchi
9a3c826307 Add some more casts (1/2) 
Note: I needed to split this patch in two, otherwise it's too big for
the mailing list.

This patch adds explicit casts to situations where a void pointer is
assigned to a pointer to the "real" type.  Building in C++ mode requires
those assignments to use an explicit cast.  This includes, for example:

 - callback arguments (cleanups, comparison functions, ...)
 - data attached to some object (objfile, program space, etc) in the form
   of a void pointer
 - "user data" passed to some function

This patch comes from the commit "(mostly) auto-generated patch to insert
casts needed for C++", taken from Pedro's C++ branch.

Only files built on x86 with --enable-targets=all are modified, so the
native files for other arches will need to be dealt with separately.

I built-tested this with --enable-targets=all and reg-tested.  To my
surprise, a test case (selftest.exp) had to be adjusted.

Here's the ChangeLog entry.  Again, this was relatively quick to make
despite the length, thanks to David Malcom's script, although I don't
believe it's very useful information in that particular case...

gdb/ChangeLog:

	* aarch64-tdep.c (aarch64_make_prologue_cache): Add cast(s).
	(aarch64_make_stub_cache): Likewise.
	(value_of_aarch64_user_reg): Likewise.
	* ada-lang.c (ada_inferior_data_cleanup): Likewise.
	(get_ada_inferior_data): Likewise.
	(get_ada_pspace_data): Likewise.
	(ada_pspace_data_cleanup): Likewise.
	(ada_complete_symbol_matcher): Likewise.
	(ada_exc_search_name_matches): Likewise.
	* ada-tasks.c (get_ada_tasks_pspace_data): Likewise.
	(get_ada_tasks_inferior_data): Likewise.
	* addrmap.c (addrmap_mutable_foreach_worker): Likewise.
	(splay_obstack_alloc): Likewise.
	(splay_obstack_free): Likewise.
	* alpha-linux-tdep.c (alpha_linux_supply_gregset): Likewise.
	(alpha_linux_collect_gregset): Likewise.
	(alpha_linux_supply_fpregset): Likewise.
	(alpha_linux_collect_fpregset): Likewise.
	* alpha-mdebug-tdep.c (alpha_mdebug_frame_unwind_cache): Likewise.
	* alpha-tdep.c (alpha_lds): Likewise.
	(alpha_sts): Likewise.
	(alpha_sigtramp_frame_unwind_cache): Likewise.
	(alpha_heuristic_frame_unwind_cache): Likewise.
	(alpha_supply_int_regs): Likewise.
	(alpha_fill_int_regs): Likewise.
	(alpha_supply_fp_regs): Likewise.
	(alpha_fill_fp_regs): Likewise.
	* alphanbsd-tdep.c (alphanbsd_supply_fpregset): Likewise.
	(alphanbsd_aout_supply_gregset): Likewise.
	(alphanbsd_supply_gregset): Likewise.
	* amd64-linux-tdep.c (amd64_linux_init_abi): Likewise.
	(amd64_x32_linux_init_abi): Likewise.
	* amd64-nat.c (amd64_supply_native_gregset): Likewise.
	(amd64_collect_native_gregset): Likewise.
	* amd64-tdep.c (amd64_frame_cache): Likewise.
	(amd64_sigtramp_frame_cache): Likewise.
	(amd64_epilogue_frame_cache): Likewise.
	(amd64_supply_fxsave): Likewise.
	(amd64_supply_xsave): Likewise.
	(amd64_collect_fxsave): Likewise.
	(amd64_collect_xsave): Likewise.
	* amd64-windows-tdep.c (amd64_windows_frame_cache): Likewise.
	* amd64obsd-tdep.c (amd64obsd_trapframe_cache): Likewise.
	* arm-linux-tdep.c (arm_linux_supply_gregset): Likewise.
	(arm_linux_collect_gregset): Likewise.
	(arm_linux_supply_nwfpe): Likewise.
	(arm_linux_collect_nwfpe): Likewise.
	(arm_linux_supply_vfp): Likewise.
	(arm_linux_collect_vfp): Likewise.
	* arm-tdep.c (arm_find_mapping_symbol): Likewise.
	(arm_prologue_unwind_stop_reason): Likewise.
	(arm_prologue_this_id): Likewise.
	(arm_prologue_prev_register): Likewise.
	(arm_exidx_data_free): Likewise.
	(arm_find_exidx_entry): Likewise.
	(arm_stub_this_id): Likewise.
	(arm_m_exception_this_id): Likewise.
	(arm_m_exception_prev_register): Likewise.
	(arm_normal_frame_base): Likewise.
	(gdb_print_insn_arm): Likewise.
	(arm_objfile_data_free): Likewise.
	(arm_record_special_symbol): Likewise.
	(value_of_arm_user_reg): Likewise.
	* armbsd-tdep.c (armbsd_supply_fpregset): Likewise.
	(armbsd_supply_gregset): Likewise.
	* auto-load.c (auto_load_pspace_data_cleanup): Likewise.
	(get_auto_load_pspace_data): Likewise.
	(hash_loaded_script_entry): Likewise.
	(eq_loaded_script_entry): Likewise.
	(clear_section_scripts): Likewise.
	(collect_matching_scripts): Likewise.
	* auxv.c (auxv_inferior_data_cleanup): Likewise.
	(get_auxv_inferior_data): Likewise.
	* avr-tdep.c (avr_frame_unwind_cache): Likewise.
	* ax-general.c (do_free_agent_expr_cleanup): Likewise.
	* bfd-target.c (target_bfd_xfer_partial): Likewise.
	(target_bfd_xclose): Likewise.
	(target_bfd_get_section_table): Likewise.
	* bfin-tdep.c (bfin_frame_cache): Likewise.
	* block.c (find_block_in_blockvector): Likewise.
	(call_site_for_pc): Likewise.
	(block_find_non_opaque_type_preferred): Likewise.
	* break-catch-sig.c (signal_catchpoint_insert_location): Likewise.
	(signal_catchpoint_remove_location): Likewise.
	(signal_catchpoint_breakpoint_hit): Likewise.
	(signal_catchpoint_print_one): Likewise.
	(signal_catchpoint_print_mention): Likewise.
	(signal_catchpoint_print_recreate): Likewise.
	* break-catch-syscall.c (get_catch_syscall_inferior_data): Likewise.
	* breakpoint.c (do_cleanup_counted_command_line): Likewise.
	(bp_location_compare_addrs): Likewise.
	(get_first_locp_gte_addr): Likewise.
	(check_tracepoint_command): Likewise.
	(do_map_commands_command): Likewise.
	(get_breakpoint_objfile_data): Likewise.
	(free_breakpoint_probes): Likewise.
	(do_captured_breakpoint_query): Likewise.
	(compare_breakpoints): Likewise.
	(bp_location_compare): Likewise.
	(bpstat_remove_breakpoint_callback): Likewise.
	(do_delete_breakpoint_cleanup): Likewise.
	* bsd-uthread.c (bsd_uthread_set_supply_uthread): Likewise.
	(bsd_uthread_set_collect_uthread): Likewise.
	(bsd_uthread_activate): Likewise.
	(bsd_uthread_fetch_registers): Likewise.
	(bsd_uthread_store_registers): Likewise.
	* btrace.c (check_xml_btrace_version): Likewise.
	(parse_xml_btrace_block): Likewise.
	(parse_xml_btrace_pt_config_cpu): Likewise.
	(parse_xml_btrace_pt_raw): Likewise.
	(parse_xml_btrace_pt): Likewise.
	(parse_xml_btrace_conf_bts): Likewise.
	(parse_xml_btrace_conf_pt): Likewise.
	(do_btrace_data_cleanup): Likewise.
	* c-typeprint.c (find_typedef_for_canonicalize): Likewise.
	* charset.c (cleanup_iconv): Likewise.
	(do_cleanup_iterator): Likewise.
	* cli-out.c (cli_uiout_dtor): Likewise.
	(cli_table_begin): Likewise.
	(cli_table_body): Likewise.
	(cli_table_end): Likewise.
	(cli_table_header): Likewise.
	(cli_begin): Likewise.
	(cli_end): Likewise.
	(cli_field_int): Likewise.
	(cli_field_skip): Likewise.
	(cli_field_string): Likewise.
	(cli_field_fmt): Likewise.
	(cli_spaces): Likewise.
	(cli_text): Likewise.
	(cli_message): Likewise.
	(cli_wrap_hint): Likewise.
	(cli_flush): Likewise.
	(cli_redirect): Likewise.
	(out_field_fmt): Likewise.
	(field_separator): Likewise.
	(cli_out_set_stream): Likewise.
	* cli/cli-cmds.c (compare_symtabs): Likewise.
	* cli/cli-dump.c (call_dump_func): Likewise.
	(restore_section_callback): Likewise.
	* cli/cli-script.c (clear_hook_in_cleanup): Likewise.
	(do_restore_user_call_depth): Likewise.
	(do_free_command_lines_cleanup): Likewise.
	* coff-pe-read.c (get_section_vmas): Likewise.
	(pe_as16): Likewise.
	(pe_as32): Likewise.
	* coffread.c (coff_symfile_read): Likewise.
	* common/agent.c (agent_look_up_symbols): Likewise.
	* common/filestuff.c (do_close_cleanup): Likewise.
	* common/format.c (free_format_pieces_cleanup): Likewise.
	* common/vec.c (vec_o_reserve): Likewise.
	* compile/compile-c-support.c (print_one_macro): Likewise.
	* compile/compile-c-symbols.c (hash_symbol_error): Likewise.
	(eq_symbol_error): Likewise.
	(del_symbol_error): Likewise.
	(error_symbol_once): Likewise.
	(gcc_convert_symbol): Likewise.
	(gcc_symbol_address): Likewise.
	(hash_symname): Likewise.
	(eq_symname): Likewise.
	* compile/compile-c-types.c (hash_type_map_instance): Likewise.
	(eq_type_map_instance): Likewise.
	(insert_type): Likewise.
	(convert_type): Likewise.
	* compile/compile-object-load.c (munmap_listp_free_cleanup): Likewise.
	(setup_sections): Likewise.
	(link_hash_table_free): Likewise.
	(copy_sections): Likewise.
	* compile/compile-object-run.c (do_module_cleanup): Likewise.
	* compile/compile.c (compile_print_value): Likewise.
	(do_rmdir): Likewise.
	(cleanup_compile_instance): Likewise.
	(cleanup_unlink_file): Likewise.
	* completer.c (free_completion_tracker): Likewise.
	* corelow.c (add_to_spuid_list): Likewise.
	* cp-namespace.c (reset_directive_searched): Likewise.
	* cp-support.c (reset_directive_searched): Likewise.
	* cris-tdep.c (cris_sigtramp_frame_unwind_cache): Likewise.
	(cris_frame_unwind_cache): Likewise.
	* d-lang.c (builtin_d_type): Likewise.
	* d-namespace.c (reset_directive_searched): Likewise.
	* dbxread.c (dbx_free_symfile_info): Likewise.
	(do_free_bincl_list_cleanup): Likewise.
	* disasm.c (hash_dis_line_entry): Likewise.
	(eq_dis_line_entry): Likewise.
	(dis_asm_print_address): Likewise.
	(fprintf_disasm): Likewise.
	(do_ui_file_delete): Likewise.
	* doublest.c (convert_floatformat_to_doublest): Likewise.
	* dummy-frame.c (pop_dummy_frame_bpt): Likewise.
	(dummy_frame_prev_register): Likewise.
	(dummy_frame_this_id): Likewise.
	* dwarf2-frame-tailcall.c (cache_hash): Likewise.
	(cache_eq): Likewise.
	(cache_find): Likewise.
	(tailcall_frame_this_id): Likewise.
	(dwarf2_tailcall_prev_register_first): Likewise.
	(tailcall_frame_prev_register): Likewise.
	(tailcall_frame_dealloc_cache): Likewise.
	(tailcall_frame_prev_arch): Likewise.
	* dwarf2-frame.c (dwarf2_frame_state_free): Likewise.
	(dwarf2_frame_set_init_reg): Likewise.
	(dwarf2_frame_init_reg): Likewise.
	(dwarf2_frame_set_signal_frame_p): Likewise.
	(dwarf2_frame_signal_frame_p): Likewise.
	(dwarf2_frame_set_adjust_regnum): Likewise.
	(dwarf2_frame_adjust_regnum): Likewise.
	(clear_pointer_cleanup): Likewise.
	(dwarf2_frame_cache): Likewise.
	(find_cie): Likewise.
	(dwarf2_frame_find_fde): Likewise.
	* dwarf2expr.c (dwarf_expr_address_type): Likewise.
	(free_dwarf_expr_context_cleanup): Likewise.
	* dwarf2loc.c (locexpr_find_frame_base_location): Likewise.
	(locexpr_get_frame_base): Likewise.
	(loclist_find_frame_base_location): Likewise.
	(loclist_get_frame_base): Likewise.
	(dwarf_expr_dwarf_call): Likewise.
	(dwarf_expr_get_base_type): Likewise.
	(dwarf_expr_push_dwarf_reg_entry_value): Likewise.
	(dwarf_expr_get_obj_addr): Likewise.
	(entry_data_value_coerce_ref): Likewise.
	(entry_data_value_copy_closure): Likewise.
	(entry_data_value_free_closure): Likewise.
	(get_frame_address_in_block_wrapper): Likewise.
	(dwarf2_evaluate_property): Likewise.
	(dwarf2_compile_property_to_c): Likewise.
	(needs_frame_read_addr_from_reg): Likewise.
	(needs_frame_get_reg_value): Likewise.
	(needs_frame_frame_base): Likewise.
	(needs_frame_frame_cfa): Likewise.
	(needs_frame_tls_address): Likewise.
	(needs_frame_dwarf_call): Likewise.
	(needs_dwarf_reg_entry_value): Likewise.
	(get_ax_pc): Likewise.
	(locexpr_read_variable): Likewise.
	(locexpr_read_variable_at_entry): Likewise.
	(locexpr_read_needs_frame): Likewise.
	(locexpr_describe_location): Likewise.
	(locexpr_tracepoint_var_ref): Likewise.
	(locexpr_generate_c_location): Likewise.
	(loclist_read_variable): Likewise.
	(loclist_read_variable_at_entry): Likewise.
	(loclist_describe_location): Likewise.
	(loclist_tracepoint_var_ref): Likewise.
	(loclist_generate_c_location): Likewise.
	* dwarf2read.c (line_header_hash_voidp): Likewise.
	(line_header_eq_voidp): Likewise.
	(dwarf2_has_info): Likewise.
	(dwarf2_get_section_info): Likewise.
	(locate_dwz_sections): Likewise.
	(hash_file_name_entry): Likewise.
	(eq_file_name_entry): Likewise.
	(delete_file_name_entry): Likewise.
	(dw2_setup): Likewise.
	(dw2_get_file_names_reader): Likewise.
	(dw2_find_pc_sect_compunit_symtab): Likewise.
	(hash_signatured_type): Likewise.
	(eq_signatured_type): Likewise.
	(add_signatured_type_cu_to_table): Likewise.
	(create_debug_types_hash_table): Likewise.
	(lookup_dwo_signatured_type): Likewise.
	(lookup_dwp_signatured_type): Likewise.
	(lookup_signatured_type): Likewise.
	(hash_type_unit_group): Likewise.
	(eq_type_unit_group): Likewise.
	(get_type_unit_group): Likewise.
	(process_psymtab_comp_unit_reader): Likewise.
	(sort_tu_by_abbrev_offset): Likewise.
	(process_skeletonless_type_unit): Likewise.
	(psymtabs_addrmap_cleanup): Likewise.
	(dwarf2_read_symtab): Likewise.
	(psymtab_to_symtab_1): Likewise.
	(die_hash): Likewise.
	(die_eq): Likewise.
	(load_full_comp_unit_reader): Likewise.
	(reset_die_in_process): Likewise.
	(free_cu_line_header): Likewise.
	(handle_DW_AT_stmt_list): Likewise.
	(hash_dwo_file): Likewise.
	(eq_dwo_file): Likewise.
	(hash_dwo_unit): Likewise.
	(eq_dwo_unit): Likewise.
	(create_dwo_cu_reader): Likewise.
	(create_dwo_unit_in_dwp_v1): Likewise.
	(create_dwo_unit_in_dwp_v2): Likewise.
	(lookup_dwo_unit_in_dwp): Likewise.
	(dwarf2_locate_dwo_sections): Likewise.
	(dwarf2_locate_common_dwp_sections): Likewise.
	(dwarf2_locate_v2_dwp_sections): Likewise.
	(hash_dwp_loaded_cutus): Likewise.
	(eq_dwp_loaded_cutus): Likewise.
	(lookup_dwo_cutu): Likewise.
	(abbrev_table_free_cleanup): Likewise.
	(dwarf2_free_abbrev_table): Likewise.
	(find_partial_die_in_comp_unit): Likewise.
	(free_line_header_voidp): Likewise.
	(follow_die_offset): Likewise.
	(follow_die_sig_1): Likewise.
	(free_heap_comp_unit): Likewise.
	(free_stack_comp_unit): Likewise.
	(dwarf2_free_objfile): Likewise.
	(per_cu_offset_and_type_hash): Likewise.
	(per_cu_offset_and_type_eq): Likewise.
	(get_die_type_at_offset): Likewise.
	(partial_die_hash): Likewise.
	(partial_die_eq): Likewise.
	(dwarf2_per_objfile_free): Likewise.
	(hash_strtab_entry): Likewise.
	(eq_strtab_entry): Likewise.
	(add_string): Likewise.
	(hash_symtab_entry): Likewise.
	(eq_symtab_entry): Likewise.
	(delete_symtab_entry): Likewise.
	(cleanup_mapped_symtab): Likewise.
	(add_indices_to_cpool): Likewise.
	(hash_psymtab_cu_index): Likewise.
	(eq_psymtab_cu_index): Likewise.
	(add_address_entry_worker): Likewise.
	(unlink_if_set): Likewise.
	(write_one_signatured_type): Likewise.
	(save_gdb_index_command): Likewise.
	* elfread.c (elf_symtab_read): Likewise.
	(elf_gnu_ifunc_cache_hash): Likewise.
	(elf_gnu_ifunc_cache_eq): Likewise.
	(elf_gnu_ifunc_record_cache): Likewise.
	(elf_gnu_ifunc_resolve_by_cache): Likewise.
	(elf_get_probes): Likewise.
	(probe_key_free): Likewise.
	* f-lang.c (builtin_f_type): Likewise.
	* frame-base.c (frame_base_append_sniffer): Likewise.
	(frame_base_set_default): Likewise.
	(frame_base_find_by_frame): Likewise.
	* frame-unwind.c (frame_unwind_prepend_unwinder): Likewise.
	(frame_unwind_append_unwinder): Likewise.
	(frame_unwind_find_by_frame): Likewise.
	* frame.c (frame_addr_hash): Likewise.
	(frame_addr_hash_eq): Likewise.
	(frame_stash_find): Likewise.
	(do_frame_register_read): Likewise.
	(unwind_to_current_frame): Likewise.
	(frame_cleanup_after_sniffer): Likewise.
	* frv-linux-tdep.c (frv_linux_sigtramp_frame_cache): Likewise.
	* frv-tdep.c (frv_frame_unwind_cache): Likewise.
	* ft32-tdep.c (ft32_frame_cache): Likewise.
	* gcore.c (do_bfd_delete_cleanup): Likewise.
	(gcore_create_callback): Likewise.
	* gdb_bfd.c (hash_bfd): Likewise.
	(eq_bfd): Likewise.
	(gdb_bfd_open): Likewise.
	(free_one_bfd_section): Likewise.
	(gdb_bfd_ref): Likewise.
	(gdb_bfd_unref): Likewise.
	(get_section_descriptor): Likewise.
	(gdb_bfd_map_section): Likewise.
	(gdb_bfd_crc): Likewise.
	(gdb_bfd_mark_parent): Likewise.
	(gdb_bfd_record_inclusion): Likewise.
	(gdb_bfd_requires_relocations): Likewise.
	(print_one_bfd): Likewise.
	* gdbtypes.c (type_pair_hash): Likewise.
	(type_pair_eq): Likewise.
	(builtin_type): Likewise.
	(objfile_type): Likewise.
	* gnu-v3-abi.c (vtable_ptrdiff_type): Likewise.
	(vtable_address_point_offset): Likewise.
	(gnuv3_get_vtable): Likewise.
	(hash_value_and_voffset): Likewise.
	(eq_value_and_voffset): Likewise.
	(compare_value_and_voffset): Likewise.
	(compute_vtable_size): Likewise.
	(gnuv3_get_typeid_type): Likewise.
	* go-lang.c (builtin_go_type): Likewise.
	* guile/scm-block.c (bkscm_hash_block_smob): Likewise.
	(bkscm_eq_block_smob): Likewise.
	(bkscm_objfile_block_map): Likewise.
	(bkscm_del_objfile_blocks): Likewise.
	* guile/scm-breakpoint.c (bpscm_build_bp_list): Likewise.
	* guile/scm-disasm.c (gdbscm_disasm_read_memory_worker): Likewise.
	(gdbscm_disasm_print_address): Likewise.
	* guile/scm-frame.c (frscm_hash_frame_smob): Likewise.
	(frscm_eq_frame_smob): Likewise.
	(frscm_inferior_frame_map): Likewise.
	(frscm_del_inferior_frames): Likewise.
	* guile/scm-gsmob.c (gdbscm_add_objfile_ref): Likewise.
	* guile/scm-objfile.c (ofscm_handle_objfile_deleted): Likewise.
	(ofscm_objfile_smob_from_objfile): Likewise.
	* guile/scm-ports.c (ioscm_write): Likewise.
	(ioscm_file_port_delete): Likewise.
	(ioscm_file_port_rewind): Likewise.
	(ioscm_file_port_put): Likewise.
	(ioscm_file_port_write): Likewise.
	* guile/scm-progspace.c (psscm_handle_pspace_deleted): Likewise.
	(psscm_pspace_smob_from_pspace): Likewise.
	* guile/scm-safe-call.c (scscm_recording_pre_unwind_handler): Likewise.
	(scscm_recording_unwind_handler): Likewise.
	(gdbscm_with_catch): Likewise.
	(scscm_call_0_body): Likewise.
	(scscm_call_1_body): Likewise.
	(scscm_call_2_body): Likewise.
	(scscm_call_3_body): Likewise.
	(scscm_call_4_body): Likewise.
	(scscm_apply_1_body): Likewise.
	(scscm_eval_scheme_string): Likewise.
	(gdbscm_safe_eval_string): Likewise.
	(scscm_source_scheme_script): Likewise.
	(gdbscm_safe_source_script): Likewise.
	* guile/scm-string.c (gdbscm_call_scm_to_stringn): Likewise.
	(gdbscm_call_scm_from_stringn): Likewise.
	* guile/scm-symbol.c (syscm_hash_symbol_smob): Likewise.
	(syscm_eq_symbol_smob): Likewise.
	(syscm_get_symbol_map): Likewise.
	(syscm_del_objfile_symbols): Likewise.
	* guile/scm-symtab.c (stscm_hash_symtab_smob): Likewise.
	(stscm_eq_symtab_smob): Likewise.
	(stscm_objfile_symtab_map): Likewise.
	(stscm_del_objfile_symtabs): Likewise.
	* guile/scm-type.c (tyscm_hash_type_smob): Likewise.
	(tyscm_eq_type_smob): Likewise.
	(tyscm_type_map): Likewise.
	(tyscm_copy_type_recursive): Likewise.
	(save_objfile_types): Likewise.
	* guile/scm-utils.c (extract_arg): Likewise.
	* h8300-tdep.c (h8300_frame_cache): Likewise.
	* hppa-linux-tdep.c (hppa_linux_sigtramp_frame_unwind_cache): Likewise.
	* hppa-tdep.c (compare_unwind_entries): Likewise.
	(find_unwind_entry): Likewise.
	(hppa_frame_cache): Likewise.
	(hppa_stub_frame_unwind_cache): Likewise.
	* hppanbsd-tdep.c (hppanbsd_supply_gregset): Likewise.
	* hppaobsd-tdep.c (hppaobsd_supply_gregset): Likewise.
	(hppaobsd_supply_fpregset): Likewise.
	* i386-cygwin-tdep.c (core_process_module_section): Likewise.
	* i386-linux-tdep.c (i386_linux_init_abi): Likewise.
	* i386-tdep.c (i386_frame_cache): Likewise.
	(i386_epilogue_frame_cache): Likewise.
	(i386_sigtramp_frame_cache): Likewise.
	(i386_supply_gregset): Likewise.
	(i386_collect_gregset): Likewise.
	(i386_gdbarch_init): Likewise.
	* i386obsd-tdep.c (i386obsd_aout_supply_regset): Likewise.
	(i386obsd_trapframe_cache): Likewise.
	* i387-tdep.c (i387_supply_fsave): Likewise.
	(i387_collect_fsave): Likewise.
	(i387_supply_fxsave): Likewise.
	(i387_collect_fxsave): Likewise.
	(i387_supply_xsave): Likewise.
	(i387_collect_xsave): Likewise.
	* ia64-tdep.c (ia64_frame_cache): Likewise.
	(ia64_sigtramp_frame_cache): Likewise.
	* infcmd.c (attach_command_continuation): Likewise.
	(attach_command_continuation_free_args): Likewise.
	* inferior.c (restore_inferior): Likewise.
	(delete_thread_of_inferior): Likewise.
	* inflow.c (inflow_inferior_data_cleanup): Likewise.
	(get_inflow_inferior_data): Likewise.
	(inflow_inferior_exit): Likewise.
	* infrun.c (displaced_step_clear_cleanup): Likewise.
	(restore_current_uiout_cleanup): Likewise.
	(release_stop_context_cleanup): Likewise.
	(do_restore_infcall_suspend_state_cleanup): Likewise.
	(do_restore_infcall_control_state_cleanup): Likewise.
	(restore_inferior_ptid): Likewise.
	* inline-frame.c (block_starting_point_at): Likewise.
	* iq2000-tdep.c (iq2000_frame_cache): Likewise.
	* jit.c (get_jit_objfile_data): Likewise.
	(get_jit_program_space_data): Likewise.
	(jit_object_close_impl): Likewise.
	(jit_find_objf_with_entry_addr): Likewise.
	(jit_breakpoint_deleted): Likewise.
	(jit_unwind_reg_set_impl): Likewise.
	(jit_unwind_reg_get_impl): Likewise.
	(jit_dealloc_cache): Likewise.
	(jit_frame_sniffer): Likewise.
	(jit_frame_prev_register): Likewise.
	(jit_prepend_unwinder): Likewise.
	(jit_inferior_exit_hook): Likewise.
	(free_objfile_data): Likewise.
	* jv-lang.c (jv_per_objfile_free): Likewise.
	(get_dynamics_objfile): Likewise.
	(get_java_class_symtab): Likewise.
	(builtin_java_type): Likewise.
	* language.c (language_string_char_type): Likewise.
	(language_bool_type): Likewise.
	(language_lookup_primitive_type): Likewise.
	(language_lookup_primitive_type_as_symbol): Likewise.
	* linespec.c (hash_address_entry): Likewise.
	(eq_address_entry): Likewise.
	(iterate_inline_only): Likewise.
	(iterate_name_matcher): Likewise.
	(decode_line_2_compare_items): Likewise.
	(collect_one_symbol): Likewise.
	(compare_symbols): Likewise.
	(compare_msymbols): Likewise.
	(add_symtabs_to_list): Likewise.
	(collect_symbols): Likewise.
	(compare_msyms): Likewise.
	(add_minsym): Likewise.
	(cleanup_linespec_result): Likewise.
	* linux-fork.c (inferior_call_waitpid_cleanup): Likewise.
	* linux-nat.c (delete_lwp_cleanup): Likewise.
	(count_events_callback): Likewise.
	(select_event_lwp_callback): Likewise.
	(resume_stopped_resumed_lwps): Likewise.
	* linux-tdep.c (get_linux_gdbarch_data): Likewise.
	(invalidate_linux_cache_inf): Likewise.
	(get_linux_inferior_data): Likewise.
	(linux_find_memory_regions_thunk): Likewise.
	(linux_make_mappings_callback): Likewise.
	(linux_corefile_thread_callback): Likewise.
	(find_mapping_size): Likewise.
	* linux-thread-db.c (find_new_threads_callback): Likewise.
	* lm32-tdep.c (lm32_frame_cache): Likewise.
	* m2-lang.c (builtin_m2_type): Likewise.
	* m32c-tdep.c (m32c_analyze_frame_prologue): Likewise.
	* m32r-linux-tdep.c (m32r_linux_sigtramp_frame_cache): Likewise.
	(m32r_linux_supply_gregset): Likewise.
	(m32r_linux_collect_gregset): Likewise.
	* m32r-tdep.c (m32r_frame_unwind_cache): Likewise.
	* m68hc11-tdep.c (m68hc11_frame_unwind_cache): Likewise.
	* m68k-tdep.c (m68k_frame_cache): Likewise.
	* m68kbsd-tdep.c (m68kbsd_supply_fpregset): Likewise.
	(m68kbsd_supply_gregset): Likewise.
	* m68klinux-tdep.c (m68k_linux_sigtramp_frame_cache): Likewise.
	* m88k-tdep.c (m88k_frame_cache): Likewise.
	(m88k_supply_gregset): Likewise.

gdb/gdbserver/ChangeLog:

	* dll.c (match_dll): Add cast(s).
	(unloaded_dll): Likewise.
	* linux-low.c (second_thread_of_pid_p): Likewise.
	(delete_lwp_callback): Likewise.
	(count_events_callback): Likewise.
	(select_event_lwp_callback): Likewise.
	(linux_set_resume_request): Likewise.
	* server.c (accumulate_file_name_length): Likewise.
	(emit_dll_description): Likewise.
	(handle_qxfer_threads_worker): Likewise.
	(visit_actioned_threads): Likewise.
	* thread-db.c (any_thread_of): Likewise.
	* tracepoint.c (same_process_p): Likewise.
	(match_blocktype): Likewise.
	(build_traceframe_info_xml): Likewise.

gdb/testsuite/ChangeLog:

	* gdb.gdb/selftest.exp (do_steps_and_nexts): Adjust expected
	source line.
 2015-09-25 14:08:07 -04:00
Simon Marchi
224c3ddb89 Add casts to memory allocation related calls 
Most allocation functions (if not all) return a void* pointing to the
allocated memory.  In C++, we need to add an explicit cast when
assigning the result to a pointer to another type (which is the case
more often than not).

The content of this patch is taken from Pedro's branch, from commit
"(mostly) auto-generated patch to insert casts needed for C++".  I
validated that the changes make sense and manually reflowed the code to
make it respect the coding style.  I also found multiple places where I
could use XNEW/XNEWVEC/XRESIZEVEC/etc.

Thanks a lot to whoever did that automated script to insert casts, doing
it completely by hand would have taken a ridiculous amount of time.

Only files built on x86 with --enable-targets=all are modified.  This
means that all other -nat.c files are untouched and will have to be
dealt with later by using appropiate compilers.  Or maybe we can try to
build them with a regular g++ just to know where to add casts, I don't
know.

I built-tested this with --enable-targets=all and reg-tested.

Here's the changelog entry, which was not too bad to make despite the
size, thanks to David Malcom's script.  I fixed some bits by hand, but
there might be some wrong parts left (hopefully not).

gdb/ChangeLog:

	* aarch64-linux-tdep.c (aarch64_stap_parse_special_token): Add cast
	to allocation result assignment.
	* ada-exp.y (write_object_renaming): Likewise.
	(write_ambiguous_var): Likewise.
	(ada_nget_field_index): Likewise.
	(write_var_or_type): Likewise.
	* ada-lang.c (ada_decode_symbol): Likewise.
	(ada_value_assign): Likewise.
	(value_pointer): Likewise.
	(cache_symbol): Likewise.
	(add_nonlocal_symbols): Likewise.
	(ada_name_for_lookup): Likewise.
	(symbol_completion_add): Likewise.
	(ada_to_fixed_type_1): Likewise.
	(ada_get_next_arg): Likewise.
	(defns_collected): Likewise.
	* ada-lex.l (processId): Likewise.
	(processString): Likewise.
	* ada-tasks.c (read_known_tasks_array): Likewise.
	(read_known_tasks_list): Likewise.
	* ada-typeprint.c (decoded_type_name): Likewise.
	* addrmap.c (addrmap_mutable_create_fixed): Likewise.
	* amd64-tdep.c (amd64_push_arguments): Likewise.
	(amd64_displaced_step_copy_insn): Likewise.
	(amd64_classify_insn_at): Likewise.
	(amd64_relocate_instruction): Likewise.
	* amd64obsd-tdep.c (amd64obsd_sigtramp_p): Likewise.
	* arch-utils.c (simple_displaced_step_copy_insn): Likewise.
	(initialize_current_architecture): Likewise.
	* arm-linux-tdep.c (arm_stap_parse_special_token): Likewise.
	* arm-symbian-tdep.c (arm_symbian_osabi_sniffer): Likewise.
	* arm-tdep.c (arm_exidx_new_objfile): Likewise.
	(arm_push_dummy_call): Likewise.
	(extend_buffer_earlier): Likewise.
	(arm_adjust_breakpoint_address): Likewise.
	(arm_skip_stub): Likewise.
	* auto-load.c (filename_is_in_pattern): Likewise.
	(maybe_add_script_file): Likewise.
	(maybe_add_script_text): Likewise.
	(auto_load_objfile_script_1): Likewise.
	* auxv.c (ld_so_xfer_auxv): Likewise.
	* ax-general.c (new_agent_expr): Likewise.
	(grow_expr): Likewise.
	(ax_reg_mask): Likewise.
	* bcache.c (bcache_full): Likewise.
	* breakpoint.c (program_breakpoint_here_p): Likewise.
	* btrace.c (parse_xml_raw): Likewise.
	* build-id.c (build_id_to_debug_bfd): Likewise.
	* buildsym.c (end_symtab_with_blockvector): Likewise.
	* c-exp.y (string_exp): Likewise.
	(qualified_name): Likewise.
	(write_destructor_name): Likewise.
	(operator_stoken): Likewise.
	(parse_number): Likewise.
	(scan_macro_expansion): Likewise.
	(yylex): Likewise.
	(c_print_token): Likewise.
	* c-lang.c (c_get_string): Likewise.
	(emit_numeric_character): Likewise.
	* charset.c (wchar_iterate): Likewise.
	* cli/cli-cmds.c (complete_command): Likewise.
	(make_command): Likewise.
	* cli/cli-dump.c (restore_section_callback): Likewise.
	(restore_binary_file): Likewise.
	* cli/cli-interp.c (cli_interpreter_exec): Likewise.
	* cli/cli-script.c (execute_control_command): Likewise.
	* cli/cli-setshow.c (do_set_command): Likewise.
	* coff-pe-read.c (add_pe_forwarded_sym): Likewise.
	(read_pe_exported_syms): Likewise.
	* coffread.c (coff_read_struct_type): Likewise.
	(coff_read_enum_type): Likewise.
	* common/btrace-common.c (btrace_data_append): Likewise.
	* common/buffer.c (buffer_grow): Likewise.
	* common/filestuff.c (gdb_fopen_cloexec): Likewise.
	* common/format.c (parse_format_string): Likewise.
	* common/gdb_vecs.c (delim_string_to_char_ptr_vec_append): Likewise.
	* common/xml-utils.c (xml_escape_text): Likewise.
	* compile/compile-object-load.c (copy_sections): Likewise.
	(compile_object_load): Likewise.
	* compile/compile-object-run.c (compile_object_run): Likewise.
	* completer.c (filename_completer): Likewise.
	* corefile.c (read_memory_typed_address): Likewise.
	(write_memory_unsigned_integer): Likewise.
	(write_memory_signed_integer): Likewise.
	(complete_set_gnutarget): Likewise.
	* corelow.c (get_core_register_section): Likewise.
	* cp-name-parser.y (d_grab): Likewise.
	(allocate_info): Likewise.
	(cp_new_demangle_parse_info): Likewise.
	* cp-namespace.c (cp_scan_for_anonymous_namespaces): Likewise.
	(cp_lookup_symbol_in_namespace): Likewise.
	(lookup_namespace_scope): Likewise.
	(find_symbol_in_baseclass): Likewise.
	(cp_lookup_nested_symbol): Likewise.
	(cp_lookup_transparent_type_loop): Likewise.
	* cp-support.c (copy_string_to_obstack): Likewise.
	(make_symbol_overload_list): Likewise.
	(make_symbol_overload_list_namespace): Likewise.
	(make_symbol_overload_list_adl_namespace): Likewise.
	(first_component_command): Likewise.
	* cp-valprint.c (cp_print_value): Likewise.
	* ctf.c (ctf_xfer_partial): Likewise.
	* d-exp.y (StringExp): Likewise.
	* d-namespace.c (d_lookup_symbol_in_module): Likewise.
	(lookup_module_scope): Likewise.
	(find_symbol_in_baseclass): Likewise.
	(d_lookup_nested_symbol): Likewise.
	* dbxread.c (find_stab_function_addr): Likewise.
	(read_dbx_symtab): Likewise.
	(dbx_end_psymtab): Likewise.
	(cp_set_block_scope): Likewise.
	* dcache.c (dcache_alloc): Likewise.
	* demangle.c (_initialize_demangler): Likewise.
	* dicos-tdep.c (dicos_load_module_p): Likewise.
	* dictionary.c (dict_create_hashed_expandable): Likewise.
	(dict_create_linear_expandable): Likewise.
	(expand_hashtable): Likewise.
	(add_symbol_linear_expandable): Likewise.
	* dwarf2-frame.c (add_cie): Likewise.
	(add_fde): Likewise.
	(dwarf2_build_frame_info): Likewise.
	* dwarf2expr.c (dwarf_expr_grow_stack): Likewise.
	(dwarf_expr_fetch_address): Likewise.
	(add_piece): Likewise.
	(execute_stack_op): Likewise.
	* dwarf2loc.c (chain_candidate): Likewise.
	(dwarf_entry_parameter_to_value): Likewise.
	(read_pieced_value): Likewise.
	(write_pieced_value): Likewise.
	* dwarf2read.c (dwarf2_read_section): Likewise.
	(add_type_unit): Likewise.
	(read_comp_units_from_section): Likewise.
	(fixup_go_packaging): Likewise.
	(dwarf2_compute_name): Likewise.
	(dwarf2_physname): Likewise.
	(create_dwo_unit_in_dwp_v1): Likewise.
	(create_dwo_unit_in_dwp_v2): Likewise.
	(read_func_scope): Likewise.
	(read_call_site_scope): Likewise.
	(dwarf2_attach_fields_to_type): Likewise.
	(process_structure_scope): Likewise.
	(mark_common_block_symbol_computed): Likewise.
	(read_common_block): Likewise.
	(abbrev_table_read_table): Likewise.
	(guess_partial_die_structure_name): Likewise.
	(fixup_partial_die): Likewise.
	(add_file_name): Likewise.
	(dwarf2_const_value_data): Likewise.
	(dwarf2_const_value_attr): Likewise.
	(build_error_marker_type): Likewise.
	(guess_full_die_structure_name): Likewise.
	(anonymous_struct_prefix): Likewise.
	(typename_concat): Likewise.
	(dwarf2_canonicalize_name): Likewise.
	(dwarf2_name): Likewise.
	(write_constant_as_bytes): Likewise.
	(dwarf2_fetch_constant_bytes): Likewise.
	(copy_string): Likewise.
	(parse_macro_definition): Likewise.
	* elfread.c (elf_symfile_segments): Likewise.
	(elf_rel_plt_read): Likewise.
	(elf_gnu_ifunc_resolve_by_cache): Likewise.
	(elf_gnu_ifunc_resolve_by_got): Likewise.
	(elf_read_minimal_symbols): Likewise.
	(elf_gnu_ifunc_record_cache): Likewise.
	* event-top.c (top_level_prompt): Likewise.
	(command_line_handler): Likewise.
	* exec.c (resize_section_table): Likewise.
	* expprint.c (print_subexp_standard): Likewise.
	* fbsd-tdep.c (fbsd_collect_regset_section_cb): Likewise.
	* findcmd.c (parse_find_args): Likewise.
	* findvar.c (address_from_register): Likewise.
	* frame.c (get_prev_frame_always): Likewise.
	* gdb_bfd.c (gdb_bfd_ref): Likewise.
	(get_section_descriptor): Likewise.
	* gdb_obstack.c (obconcat): Likewise.
	(obstack_strdup): Likewise.
	* gdbtypes.c (lookup_function_type_with_arguments): Likewise.
	(create_set_type): Likewise.
	(lookup_unsigned_typename): Likewise.
	(lookup_signed_typename): Likewise.
	(resolve_dynamic_union): Likewise.
	(resolve_dynamic_struct): Likewise.
	(add_dyn_prop): Likewise.
	(copy_dynamic_prop_list): Likewise.
	(arch_flags_type): Likewise.
	(append_composite_type_field_raw): Likewise.
	* gdbtypes.h (INIT_FUNC_SPECIFIC): Likewise.
	* gnu-v3-abi.c (gnuv3_rtti_type): Likewise.
	* go-exp.y (string_exp): Likewise.
	* go-lang.c (go_demangle): Likewise.
	* guile/guile.c (compute_scheme_string): Likewise.
	* guile/scm-cmd.c (gdbscm_parse_command_name): Likewise.
	(gdbscm_canonicalize_command_name): Likewise.
	* guile/scm-ports.c (ioscm_init_stdio_buffers): Likewise.
	(ioscm_init_memory_port): Likewise.
	(ioscm_reinit_memory_port): Likewise.
	* guile/scm-utils.c (gdbscm_gc_xstrdup): Likewise.
	(gdbscm_gc_dup_argv): Likewise.
	* h8300-tdep.c (h8300_push_dummy_call): Likewise.
	* hppa-tdep.c (internalize_unwinds): Likewise.
	(read_unwind_info): Likewise.
	* i386-cygwin-tdep.c (core_process_module_section): Likewise.
	(windows_core_xfer_shared_libraries): Likewise.
	* i386-tdep.c (i386_displaced_step_copy_insn): Likewise.
	(i386_stap_parse_special_token_triplet): Likewise.
	(i386_stap_parse_special_token_three_arg_disp): Likewise.
	* i386obsd-tdep.c (i386obsd_sigtramp_p): Likewise.
	* inf-child.c (inf_child_fileio_readlink): Likewise.
	* inf-ptrace.c (inf_ptrace_fetch_register): Likewise.
	(inf_ptrace_store_register): Likewise.
	* infrun.c (follow_exec): Likewise.
	(displaced_step_prepare_throw): Likewise.
	(save_stop_context): Likewise.
	(save_infcall_suspend_state): Likewise.
	* jit.c (jit_read_descriptor): Likewise.
	(jit_read_code_entry): Likewise.
	(jit_symtab_line_mapping_add_impl): Likewise.
	(finalize_symtab): Likewise.
	(jit_unwind_reg_get_impl): Likewise.
	* jv-exp.y (QualifiedName): Likewise.
	* jv-lang.c (get_java_utf8_name): Likewise.
	(type_from_class): Likewise.
	(java_demangle_type_signature): Likewise.
	(java_class_name_from_physname): Likewise.
	* jv-typeprint.c (java_type_print_base): Likewise.
	* jv-valprint.c (java_value_print): Likewise.
	* language.c (add_language): Likewise.
	* linespec.c (add_sal_to_sals_basic): Likewise.
	(add_sal_to_sals): Likewise.
	(decode_objc): Likewise.
	(find_linespec_symbols): Likewise.
	* linux-fork.c (fork_save_infrun_state): Likewise.
	* linux-nat.c (linux_nat_detach): Likewise.
	(linux_nat_fileio_readlink): Likewise.
	* linux-record.c (record_linux_sockaddr): Likewise.
	(record_linux_msghdr): Likewise.
	(Do): Likewise.
	* linux-tdep.c (linux_core_info_proc_mappings): Likewise.
	(linux_collect_regset_section_cb): Likewise.
	(linux_get_siginfo_data): Likewise.
	* linux-thread-db.c (try_thread_db_load_from_pdir_1): Likewise.
	(try_thread_db_load_from_dir): Likewise.
	(thread_db_load_search): Likewise.
	(info_auto_load_libthread_db): Likewise.
	* m32c-tdep.c (m32c_m16c_address_to_pointer): Likewise.
	(m32c_m16c_pointer_to_address): Likewise.
	* m68hc11-tdep.c (m68hc11_pseudo_register_write): Likewise.
	* m68k-tdep.c (m68k_get_longjmp_target): Likewise.
	* machoread.c (macho_check_dsym): Likewise.
	* macroexp.c (resize_buffer): Likewise.
	(gather_arguments): Likewise.
	(maybe_expand): Likewise.
	* macrotab.c (new_macro_key): Likewise.
	(new_source_file): Likewise.
	(new_macro_definition): Likewise.
	* mdebugread.c (parse_symbol): Likewise.
	(parse_type): Likewise.
	(parse_partial_symbols): Likewise.
	(psymtab_to_symtab_1): Likewise.
	* mem-break.c (default_memory_insert_breakpoint): Likewise.
	* mi/mi-cmd-break.c (mi_argv_to_format): Likewise.
	* mi/mi-main.c (mi_cmd_data_read_memory): Likewise.
	(mi_cmd_data_read_memory_bytes): Likewise.
	(mi_cmd_data_write_memory_bytes): Likewise.
	(mi_cmd_trace_frame_collected): Likewise.
	* mi/mi-parse.c (mi_parse_argv): Likewise.
	(mi_parse): Likewise.
	* minidebug.c (lzma_open): Likewise.
	(lzma_pread): Likewise.
	* mips-tdep.c (mips_read_fp_register_single): Likewise.
	(mips_print_fp_register): Likewise.
	* mipsnbsd-tdep.c (mipsnbsd_get_longjmp_target): Likewise.
	* mipsread.c (read_alphacoff_dynamic_symtab): Likewise.
	* mt-tdep.c (mt_register_name): Likewise.
	(mt_registers_info): Likewise.
	(mt_push_dummy_call): Likewise.
	* namespace.c (add_using_directive): Likewise.
	* nat/linux-btrace.c (perf_event_read): Likewise.
	(linux_enable_bts): Likewise.
	* nat/linux-osdata.c (linux_common_core_of_thread): Likewise.
	* nat/linux-ptrace.c (linux_ptrace_test_ret_to_nx): Likewise.
	* nto-tdep.c (nto_find_and_open_solib): Likewise.
	(nto_parse_redirection): Likewise.
	* objc-lang.c (objc_demangle): Likewise.
	(find_methods): Likewise.
	* objfiles.c (get_objfile_bfd_data): Likewise.
	(set_objfile_main_name): Likewise.
	(allocate_objfile): Likewise.
	(objfile_relocate): Likewise.
	(update_section_map): Likewise.
	* osabi.c (generic_elf_osabi_sniff_abi_tag_sections): Likewise.
	* p-exp.y (exp): Likewise.
	(yylex): Likewise.
	* p-valprint.c (pascal_object_print_value): Likewise.
	* parse.c (initialize_expout): Likewise.
	(mark_completion_tag): Likewise.
	(copy_name): Likewise.
	(parse_float): Likewise.
	(type_stack_reserve): Likewise.
	* ppc-linux-tdep.c (ppc_stap_parse_special_token): Likewise.
	(ppu2spu_prev_register): Likewise.
	* ppc-ravenscar-thread.c (supply_register_at_address): Likewise.
	* printcmd.c (printf_wide_c_string): Likewise.
	(printf_pointer): Likewise.
	* probe.c (parse_probes): Likewise.
	* python/py-cmd.c (gdbpy_parse_command_name): Likewise.
	(cmdpy_init): Likewise.
	* python/py-gdb-readline.c (gdbpy_readline_wrapper): Likewise.
	* python/py-symtab.c (set_sal): Likewise.
	* python/py-unwind.c (pyuw_sniffer): Likewise.
	* python/python.c (python_interactive_command): Likewise.
	(compute_python_string): Likewise.
	* ravenscar-thread.c (get_running_thread_id): Likewise.
	* record-full.c (record_full_exec_insn): Likewise.
	(record_full_core_open_1): Likewise.
	* regcache.c (regcache_raw_read_signed): Likewise.
	(regcache_raw_read_unsigned): Likewise.
	(regcache_cooked_read_signed): Likewise.
	(regcache_cooked_read_unsigned): Likewise.
	* remote-fileio.c (remote_fileio_func_open): Likewise.
	(remote_fileio_func_rename): Likewise.
	(remote_fileio_func_unlink): Likewise.
	(remote_fileio_func_stat): Likewise.
	(remote_fileio_func_system): Likewise.
	* remote-mips.c (mips_xfer_memory): Likewise.
	(mips_load_srec): Likewise.
	(pmon_end_download): Likewise.
	* remote.c (new_remote_state): Likewise.
	(map_regcache_remote_table): Likewise.
	(remote_register_number_and_offset): Likewise.
	(init_remote_state): Likewise.
	(get_memory_packet_size): Likewise.
	(remote_pass_signals): Likewise.
	(remote_program_signals): Likewise.
	(remote_start_remote): Likewise.
	(remote_check_symbols): Likewise.
	(remote_query_supported): Likewise.
	(extended_remote_attach): Likewise.
	(process_g_packet): Likewise.
	(store_registers_using_G): Likewise.
	(putpkt_binary): Likewise.
	(read_frame): Likewise.
	(compare_sections_command): Likewise.
	(remote_hostio_pread): Likewise.
	(remote_hostio_readlink): Likewise.
	(remote_file_put): Likewise.
	(remote_file_get): Likewise.
	(remote_pid_to_exec_file): Likewise.
	(_initialize_remote): Likewise.
	* rs6000-aix-tdep.c (rs6000_aix_ld_info_to_xml): Likewise.
	(rs6000_aix_core_xfer_shared_libraries_aix): Likewise.
	* rs6000-tdep.c (ppc_displaced_step_copy_insn): Likewise.
	(bfd_uses_spe_extensions): Likewise.
	* s390-linux-tdep.c (s390_displaced_step_copy_insn): Likewise.
	* score-tdep.c (score7_malloc_and_get_memblock): Likewise.
	* solib-dsbt.c (decode_loadmap): Likewise.
	(fetch_loadmap): Likewise.
	(scan_dyntag): Likewise.
	(enable_break): Likewise.
	(dsbt_relocate_main_executable): Likewise.
	* solib-frv.c (fetch_loadmap): Likewise.
	(enable_break2): Likewise.
	(frv_relocate_main_executable): Likewise.
	* solib-spu.c (spu_relocate_main_executable): Likewise.
	(spu_bfd_open): Likewise.
	* solib-svr4.c (lm_info_read): Likewise.
	(read_program_header): Likewise.
	(find_program_interpreter): Likewise.
	(scan_dyntag): Likewise.
	(elf_locate_base): Likewise.
	(open_symbol_file_object): Likewise.
	(read_program_headers_from_bfd): Likewise.
	(svr4_relocate_main_executable): Likewise.
	* solib-target.c (solib_target_relocate_section_addresses): Likewise.
	* solib.c (solib_find_1): Likewise.
	(exec_file_find): Likewise.
	(solib_find): Likewise.
	* source.c (openp): Likewise.
	(print_source_lines_base): Likewise.
	(forward_search_command): Likewise.
	* sparc-ravenscar-thread.c (supply_register_at_address): Likewise.
	* spu-tdep.c (spu2ppu_prev_register): Likewise.
	(spu_get_overlay_table): Likewise.
	* stabsread.c (patch_block_stabs): Likewise.
	(define_symbol): Likewise.
	(again:): Likewise.
	(read_member_functions): Likewise.
	(read_one_struct_field): Likewise.
	(read_enum_type): Likewise.
	(common_block_start): Likewise.
	* stack.c (read_frame_arg): Likewise.
	(backtrace_command): Likewise.
	* stap-probe.c (stap_parse_register_operand): Likewise.
	* symfile.c (syms_from_objfile_1): Likewise.
	(find_separate_debug_file): Likewise.
	(load_command): Likewise.
	(load_progress): Likewise.
	(load_section_callback): Likewise.
	(reread_symbols): Likewise.
	(add_filename_language): Likewise.
	(allocate_compunit_symtab): Likewise.
	(read_target_long_array): Likewise.
	(simple_read_overlay_table): Likewise.
	* symtab.c (symbol_set_names): Likewise.
	(resize_symbol_cache): Likewise.
	(rbreak_command): Likewise.
	(completion_list_add_name): Likewise.
	(completion_list_objc_symbol): Likewise.
	(add_filename_to_list): Likewise.
	* target-descriptions.c (maint_print_c_tdesc_cmd): Likewise.
	* target-memory.c (target_write_memory_blocks): Likewise.
	* target.c (target_read_string): Likewise.
	(read_whatever_is_readable): Likewise.
	(target_read_alloc_1): Likewise.
	(simple_search_memory): Likewise.
	(target_fileio_read_alloc_1): Likewise.
	* tilegx-tdep.c (tilegx_push_dummy_call): Likewise.
	* top.c (command_line_input): Likewise.
	* tracefile-tfile.c (tfile_fetch_registers): Likewise.
	* tracefile.c (tracefile_fetch_registers): Likewise.
	* tracepoint.c (add_memrange): Likewise.
	(init_collection_list): Likewise.
	(add_aexpr): Likewise.
	(trace_dump_actions): Likewise.
	(parse_trace_status): Likewise.
	(parse_tracepoint_definition): Likewise.
	(parse_tsv_definition): Likewise.
	(parse_static_tracepoint_marker_definition): Likewise.
	* tui/tui-file.c (tui_sfileopen): Likewise.
	(tui_file_adjust_strbuf): Likewise.
	* tui/tui-io.c (tui_expand_tabs): Likewise.
	* tui/tui-source.c (tui_set_source_content): Likewise.
	* typeprint.c (find_global_typedef): Likewise.
	* ui-file.c (do_ui_file_xstrdup): Likewise.
	(ui_file_obsavestring): Likewise.
	(mem_file_write): Likewise.
	* utils.c (make_hex_string): Likewise.
	(get_regcomp_error): Likewise.
	(puts_filtered_tabular): Likewise.
	(gdb_realpath_keepfile): Likewise.
	(ldirname): Likewise.
	(gdb_bfd_errmsg): Likewise.
	(substitute_path_component): Likewise.
	* valops.c (search_struct_method): Likewise.
	(find_oload_champ_namespace_loop): Likewise.
	* valprint.c (print_decimal_chars): Likewise.
	(read_string): Likewise.
	(generic_emit_char): Likewise.
	* varobj.c (varobj_delete): Likewise.
	(varobj_value_get_print_value): Likewise.
	* vaxobsd-tdep.c (vaxobsd_sigtramp_sniffer): Likewise.
	* windows-tdep.c (display_one_tib): Likewise.
	* xcoffread.c (read_xcoff_symtab): Likewise.
	(process_xcoff_symbol): Likewise.
	(swap_sym): Likewise.
	(scan_xcoff_symtab): Likewise.
	(xcoff_initial_scan): Likewise.
	* xml-support.c (gdb_xml_end_element): Likewise.
	(xml_process_xincludes): Likewise.
	(xml_fetch_content_from_file): Likewise.
	* xml-syscall.c (xml_list_of_syscalls): Likewise.
	* xstormy16-tdep.c (xstormy16_push_dummy_call): Likewise.

gdb/gdbserver/ChangeLog:

	* ax.c (gdb_parse_agent_expr): Add cast to allocation result
	assignment.
	(gdb_unparse_agent_expr): Likewise.
	* hostio.c (require_data): Likewise.
	(handle_pread): Likewise.
	* linux-low.c (disable_regset): Likewise.
	(fetch_register): Likewise.
	(store_register): Likewise.
	(get_dynamic): Likewise.
	(linux_qxfer_libraries_svr4): Likewise.
	* mem-break.c (delete_fast_tracepoint_jump): Likewise.
	(set_fast_tracepoint_jump): Likewise.
	(uninsert_fast_tracepoint_jumps_at): Likewise.
	(reinsert_fast_tracepoint_jumps_at): Likewise.
	(validate_inserted_breakpoint): Likewise.
	(clone_agent_expr): Likewise.
	* regcache.c (init_register_cache): Likewise.
	* remote-utils.c (putpkt_binary_1): Likewise.
	(decode_M_packet): Likewise.
	(decode_X_packet): Likewise.
	(look_up_one_symbol): Likewise.
	(relocate_instruction): Likewise.
	(monitor_output): Likewise.
	* server.c (handle_search_memory): Likewise.
	(handle_qxfer_exec_file): Likewise.
	(handle_qxfer_libraries): Likewise.
	(handle_qxfer): Likewise.
	(handle_query): Likewise.
	(handle_v_cont): Likewise.
	(handle_v_run): Likewise.
	(captured_main): Likewise.
	* target.c (write_inferior_memory): Likewise.
	* thread-db.c (try_thread_db_load_from_dir): Likewise.
	* tracepoint.c (init_trace_buffer): Likewise.
	(add_tracepoint_action): Likewise.
	(add_traceframe): Likewise.
	(add_traceframe_block): Likewise.
	(cmd_qtdpsrc): Likewise.
	(cmd_qtdv): Likewise.
	(cmd_qtstatus): Likewise.
	(response_source): Likewise.
	(response_tsv): Likewise.
	(cmd_qtnotes): Likewise.
	(gdb_collect): Likewise.
	(initialize_tracepoint): Likewise.
 2015-09-25 14:08:06 -04:00
Pedro Alves
f890475111 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.
 2015-08-21 23:49:37 +01:00
Andrew Burgess
060967202b gdb: Move get_frame_language from stack.c to frame.c. 
The get_frame_language feels like it would be more at home in frame.c
rather than in stack.c, while the declaration, that is currently in
language.h can be moved into frame.h to match.

A couple of new includes are added, but otherwise no substantial change
here.

gdb/ChangeLog:

	* stack.c (get_frame_language): Moved ...
	* frame.c (get_frame_language): ... to here.
	* language.h (get_frame_language): Declaration moved to frame.h.
	* frame.h: Add language.h include, for language enum.
	(get_frame_language): Declaration moved from language.h.
	* language.c: Add frame.h include.
	* top.c: Add frame.h include.
	* symtab.h (struct obj_section): Declare.
	(struct cmd_list_element): Declare.
 2015-08-07 11:55:20 +02:00
Patrick Palka
0986c744df Replace TUI's select_frame hook (PR tui/13378) 
The select_frame hook is used by TUI to update TUI's frame and register
information following changes to the selected frame.  The problem with
this hook is that it gets called after every single frame change, even
if the frame change is only temporary or internal.  This is the primary
cause of flickering and slowdown when running the inferior under TUI
with conditional breakpoints set.  Internal GDB events are the source of
many calls to select_frame and these internal events are triggered
frequently, especially when a few conditional breakpoints are set.

This patch removes the select_frame hook altogether and instead makes
the frame and register information get updated in two key places (using
observers): after an inferior stops, and right before displaying a
prompt.  The latter hook covers the case when frame information must be
updated following a call to "up", "down" or "frame", and the former
covers the case when frame and register information must be updated
after a call to "continue", "step", etc. or after the inferior stops in
async execution mode.  Together these hooks should cover all the cases
when frame information ought to be refreshed (and when the relevant
windows ought to be subsequently updated).

The print_frame_info_listing hook is also effectively obsolete now, but
it still must be set while the TUI is active because its caller
print_frame_info will otherwise assume that the CLI is active, and will
print the frame informaion accordingly.  So this patch also sets the
print_frame_info_listing hook to a dummy callback, in lieu of outright
removing it yet.

Effectively, with this patch, frame/PC changes that do not immediately
precede an inferior-stop event or a prompt display event no longer cause
TUI's frame and register information to be updated.

And as a result of this change and of the previous change to
tui_show_frame_info, the TUI is much more disciplined about updating the
screen, and so the flicker as described in the PR is totally gone.

gdb/ChangeLog:

	PR tui/13378
	* frame.c (select_frame): Remove reference to
	deprecated_selected_frame_level_changed_hook.
	* frame.h (deprecated_selected_frame_level_changed_hook): Remove
	declaration.
	* stack.c (deprecated_selected_frame_level_changed_hook):
	Likewise.
	* tui/tui-hooks.c (tui_selected_frame_level_changed_hook):
	Rename to ...
	(tui_refresh_frame_and_register_information): ... this.  Bail
	out if there is no stack.  Don't update register information
	unless registers_too_p is true.
	(tui_print_frame_info_listing_hook): Rename to ...
	(tui_dummy_print_frame_info_listing_hook): ... this.
	(tui_before_prompt): New function.
	(tui_normal_stop): New function.
	(tui_before_prompt_observer): New observer.
	(tui_normal_stop_observer): New observer.
	(tui_install_hooks): Set
	deprecated_print_frame_info_listing_hook to
	tui_dummy_print_frame_info_listing_hook.  Register
	tui_before_prompt_observer to call tui_before_prompt and
	tui_normal_stop_observer to call tui_normal_stop.  Remove
	reference to deprecated_selected_frame_level_changed_hook.
	(tui_remove_hooks): Detach and unset tui_before_prompt_observer
	and tui_normal_stop_observer.  Remove reference to
	deprecated_selected_frame_level_changed_hook.
 2015-06-30 13:56:49 -04:00
Pedro Alves
492d29ea1c Split TRY_CATCH into TRY + CATCH 
This patch splits the TRY_CATCH macro into three, so that we go from
this:

~~~
  volatile gdb_exception ex;

  TRY_CATCH (ex, RETURN_MASK_ERROR)
    {
    }
  if (ex.reason < 0)
    {
    }
~~~

to this:

~~~
  TRY
    {
    }
  CATCH (ex, RETURN_MASK_ERROR)
    {
    }
  END_CATCH
~~~

Thus, we'll be getting rid of the local volatile exception object, and
declaring the caught exception in the catch block.

This allows reimplementing TRY/CATCH in terms of C++ exceptions when
building in C++ mode, while still allowing to build GDB in C mode
(using setjmp/longjmp), as a transition step.

TBC, after this patch, is it _not_ valid to have code between the TRY
and the CATCH blocks, like:

  TRY
    {
    }

  // some code here.

  CATCH (ex, RETURN_MASK_ERROR)
    {
    }
  END_CATCH

Just like it isn't valid to do that with C++'s native try/catch.

By switching to creating the exception object inside the CATCH block
scope, we can get rid of all the explicitly allocated volatile
exception objects all over the tree, and map the CATCH block more
directly to C++'s catch blocks.

The majority of the TRY_CATCH -> TRY+CATCH+END_CATCH conversion was
done with a script, rerun from scratch at every rebase, no manual
editing involved.  After the mechanical conversion, a few places
needed manual intervention, to fix preexisting cases where we were
using the exception object outside of the TRY_CATCH block, and cases
where we were using "else" after a 'if (ex.reason) < 0)' [a CATCH
after this patch].  The result was folded into this patch so that GDB
still builds at each incremental step.

END_CATCH is necessary for two reasons:

First, because we name the exception object in the CATCH block, which
requires creating a scope, which in turn must be closed somewhere.
Declaring the exception variable in the initializer field of a for
block, like:

  #define CATCH(EXCEPTION, mask) \
    for (struct gdb_exception EXCEPTION; \
         exceptions_state_mc_catch (&EXCEPTION, MASK); \
	 EXCEPTION = exception_none)

would avoid needing END_CATCH, but alas, in C mode, we build with C90,
which doesn't allow mixed declarations and code.

Second, because when TRY/CATCH are wired to real C++ try/catch, as
long as we need to handle cleanup chains, even if there's no CATCH
block that wants to catch the exception, we need for stop at every
frame in the unwind chain and run cleanups, then rethrow.  That will
be done in END_CATCH.

After we require C++, we'll still need TRY/CATCH/END_CATCH until
cleanups are completely phased out -- TRY/CATCH in C++ mode will
save/restore the current cleanup chain, like in C mode, and END_CATCH
catches otherwise uncaugh exceptions, runs cleanups and rethrows, so
that C++ cleanups and exceptions can coexist.

IMO, this still makes the TRY/CATCH code look a bit more like a
newcomer would expect, so IMO worth it even if we weren't considering
C++.

gdb/ChangeLog.
2015-03-07  Pedro Alves  <palves@redhat.com>

	* common/common-exceptions.c (struct catcher) <exception>: No
	longer a pointer to volatile exception.  Now an exception value.
	<mask>: Delete field.
	(exceptions_state_mc_init): Remove all parameters.  Adjust.
	(exceptions_state_mc): No longer pop the catcher here.
	(exceptions_state_mc_catch): New function.
	(throw_exception): Adjust.
	* common/common-exceptions.h (exceptions_state_mc_init): Remove
	all parameters.
	(exceptions_state_mc_catch): Declare.
	(TRY_CATCH): Rename to ...
	(TRY): ... this.  Remove EXCEPTION and MASK parameters.
	(CATCH, END_CATCH): New.
	All callers adjusted.

gdb/gdbserver/ChangeLog:
2015-03-07  Pedro Alves  <palves@redhat.com>

	Adjust all callers of TRY_CATCH to use TRY/CATCH/END_CATCH
	instead.
 2015-03-07 15:14:14 +00:00
Pedro Alves
7556d4a4f6 Normalize TRY_CATCH exception handling block 
This normalizes some exception catch blocks that check for ex.reason
to look like this:

~~~
  volatile gdb_exception ex;

  TRY_CATCH (ex, RETURN_MASK_ALL)
    {
      ...
    }
  if (ex.reason < 0)
    {
      ...
    }
~~~

This is a preparation step for running a script that converts all
TRY_CATCH uses to look like this instead:

~~~
  TRY
    {
      ...
    }
  CATCH (ex, RETURN_MASK_ALL)
    {
      ...
    }
  END_CATCH
~~~

The motivation for that change is being able to reimplent TRY/CATCH in
terms of C++ try/catch.

This commit makes it so that:

 - no condition other than ex.reason < 0 is checked in the if
   predicate

 - there's no "else" block to check whether no exception was caught

 - there's no code between the TRY_CATCH (TRY) block and the
   'if (ex.reason < 0)' block (CATCH).

 - the exception object is no longer referred to outside the if/catch
   block.  Note the local volatile exception objects that are
   currently defined inside functions that use TRY_CATCH will
   disappear.  In cases it's more convenient to still refer to the
   exception outside the catch block, a new non-volatile local is
   added and copy to that object is made within the catch block.

The following patches should make this all clearer.

gdb/ChangeLog:
2015-03-07  Pedro Alves  <palves@redhat.com>

	* amd64-tdep.c (amd64_frame_cache, amd64_sigtramp_frame_cache)
	(amd64_epilogue_frame_cache): Normal exception handling code.
	* break-catch-throw.c (check_status_exception_catchpoint)
	(re_set_exception_catchpoint): Ditto.
	* cli/cli-interp.c (safe_execute_command):
	* cli/cli-script.c (script_from_file): Ditto.
	* compile/compile-c-symbols.c (generate_c_for_for_one_variable):
	Ditto.
	* compile/compile-object-run.c (compile_object_run): Ditto.
	* cp-abi.c (baseclass_offset): Ditto.
	* cp-valprint.c (cp_print_value): Ditto.
	* exceptions.c (catch_exceptions_with_msg):
	* frame-unwind.c (frame_unwind_try_unwinder): Ditto.
	* frame.c (get_frame_address_in_block_if_available): Ditto.
	* i386-tdep.c (i386_frame_cache, i386_epilogue_frame_cache)
	(i386_sigtramp_frame_cache): Ditto.
	* infcmd.c (post_create_inferior): Ditto.
	* linespec.c (parse_linespec, find_linespec_symbols):
	* p-valprint.c (pascal_object_print_value): Ditto.
	* parse.c (parse_expression_for_completion): Ditto.
	* python/py-finishbreakpoint.c (bpfinishpy_init): Ditto.
	* remote.c (remote_get_noisy_reply): Ditto.
	* s390-linux-tdep.c (s390_frame_unwind_cache): Ditto.
	* solib-svr4.c (solib_svr4_r_map): Ditto.
 2015-03-07 14:56:43 +00:00
Pedro Alves
fe978cb071 C++ keyword cleanliness, mostly auto-generated 
This patch renames symbols that happen to have names which are
reserved keywords in C++.

Most of this was generated with Tromey's cxx-conversion.el script.
Some places where later hand massaged a bit, to fix formatting, etc.
And this was rebased several times meanwhile, along with re-running
the script, so re-running the script from scratch probably does not
result in the exact same output.  I don't think that matters anyway.

gdb/
2015-02-27  Tom Tromey  <tromey@redhat.com>
	    Pedro Alves  <palves@redhat.com>

	Rename symbols whose names are reserved C++ keywords throughout.

gdb/gdbserver/
2015-02-27  Tom Tromey  <tromey@redhat.com>
	    Pedro Alves  <palves@redhat.com>

	Rename symbols whose names are reserved C++ keywords throughout.
 2015-02-27 16:33:07 +00:00
Joel Brobecker
32d0add0a6 Update year range in copyright notice of all files owned by the GDB project. 
gdb/ChangeLog:

        Update year range in copyright notice of all files.
 2015-01-01 13:32:14 +04:00
Doug Evans
08be3fe322 Replace some symbol accessor macros with functions. 
gdb/ChangeLog:

	* symtab.h (SYMBOL_SYMTAB): Delete
	(SYMBOL_OBJFILE): Delete.
	(symbol_symtab, symbol_set_symtab): Declare.
	(symbol_objfile, symbol_arch): Declare.
	* symtab.c (symbol_symtab): Replaces SYMBOL_SYMTAB.  All uses updated.
	All references to symbol->symtab redirected through here.
	(symbol_set_symtab): New function.  All assignments to SYMBOL_SYMTAB
	redirected through here.
	(symbol_arch): New function.
	(symbol_objfile): New function.  Replaces SYMBOL_OBJFILE.
	All uses updated.
	* cp-namespace.c (cp_lookup_symbol_imports_or_template): Call
	symbol_arch.
	* findvar.c (default_read_var_value): Call symbol_arch.
	* guile/scm-frame.c (gdbscm_frame_block): Call symbol_objfile.
	* jv-lang.c (add_class_symtab_symbol): Call symbol_arch.
	* printcmd.c (address_info): Call symbol_arch.
	* tracepoint.c (scope_info): Call symbol_arch.
 2014-12-23 07:21:10 -08:00
Martin Galvan
f0d4ba1fc4 frame.c: Fix the check for FID_STACK_INVALID in frame_id_eq() 
I noticed in frame_id_eq() we were checking for the "l" frame_id being
invalid twice instead of checking both "l" and "r", so this patch
corrects it.

gdb/ChangeLog:

	* frame.c (frame_id_eq): Fix the check for FID_STACK_INVALID.
 2014-11-30 19:37:31 +04:00
Doug Evans
43f3e411c4 Split struct symtab into two: struct symtab and compunit_symtab. 
Currently "symtabs" in gdb are stored as a single linked list of
struct symtab that contains both symbol symtabs (the blockvectors)
and file symtabs (the linetables).

This has led to confusion, bugs, and performance issues.

This patch is conceptually very simple: split struct symtab into
two pieces: one part containing things common across the entire
compilation unit, and one part containing things specific to each
source file.

Example.
For the case of a program built out of these files:

foo.c
  foo1.h
  foo2.h
bar.c
  foo1.h
  bar.h

Today we have a single list of struct symtabs:

objfile -> foo.c -> foo1.h -> foo2.h -> bar.c -> foo1.h -> bar.h -> NULL

where "->" means the "next" pointer in struct symtab.

With this patch, that turns into:

objfile -> foo.c(cu) -> bar.c(cu) -> NULL
            |            |
            v            v
           foo.c        bar.c
            |            |
            v            v
           foo1.h       foo1.h
            |            |
            v            v
           foo2.h       bar.h
            |            |
            v            v
           NULL         NULL

where "foo.c(cu)" and "bar.c(cu)" are struct compunit_symtab objects,
and the files foo.c, etc. are struct symtab objects.

So now, for example, when we want to iterate over all blockvectors
we can now just iterate over the compunit_symtab list.

Plus a lot of the data that was either unused or replicated for each
symtab in a compilation unit now lives in struct compunit_symtab.
E.g., the objfile pointer, the producer string, etc.
I thought of moving "language" out of struct symtab but there is
logic to try to compute the language based on previously seen files,
and I think that's best left as is for now.
With my standard monster benchmark with -readnow (which I can't actually
do, but based on my calculations), whereas today the list requires
77MB to store all the struct symtabs, it now only requires 37MB.
A modest space savings given the gigabytes needed for all the debug info,
etc.  Still, it's nice.  Plus, whereas today we create a copy of dirname
for each source file symtab in a compilation unit, we now only create one
for the compunit.

So this patch is basically just a data structure reorg,
I don't expect significant performance improvements from it.

Notes:

1) A followup patch can do a similar split for struct partial_symtab.
I have left that until after I get the changes I want in to
better utilize .gdb_index (it may affect how we do partial syms).

2) Another followup patch *could* rename struct symtab.
The term "symtab" is ambiguous and has been a source of confusion.
In this patch I'm leaving it alone, calling it the "historical" name
of "filetabs", which is what they are now: just the file-name + line-table.

gdb/ChangeLog:

	Split struct symtab into two: struct symtab and compunit_symtab.
	* amd64-tdep.c (amd64_skip_xmm_prologue): Fetch producer from compunit.
	* block.c (blockvector_for_pc_sect): Change "struct symtab *" argument
	to "struct compunit_symtab *".  All callers updated.
	(set_block_compunit_symtab): Renamed from set_block_symtab.  Change
	"struct symtab *" argument to "struct compunit_symtab *".
	All callers updated.
	(get_block_compunit_symtab): Renamed from get_block_symtab.  Change
	result to "struct compunit_symtab *".  All callers updated.
	(find_iterator_compunit_symtab): Renamed from find_iterator_symtab.
	Change result to "struct compunit_symtab *".  All callers updated.
	* block.h (struct global_block) <compunit_symtab>: Renamed from symtab.
	hange type to "struct compunit_symtab *".  All uses updated.
	(struct block_iterator) <d.compunit_symtab>: Renamed from "d.symtab".
	Change type to "struct compunit_symtab *".  All uses updated.
	* buildsym.c (struct buildsym_compunit): New struct.
	(subfiles, buildsym_compdir, buildsym_objfile, main_subfile): Delete.
	(buildsym_compunit): New static global.
	(finish_block_internal): Update to fetch objfile from
	buildsym_compunit.
	(make_blockvector): Delete objfile argument.
	(start_subfile): Rewrite to use buildsym_compunit.  Don't initialize
	debugformat, producer.
	(start_buildsym_compunit): New function.
	(free_buildsym_compunit): Renamed from free_subfiles_list.
	All callers updated.
	(patch_subfile_names): Rewrite to use buildsym_compunit.
	(get_compunit_symtab): New function.
	(get_macro_table): Delete argument comp_dir.  All callers updated.
	(start_symtab): Change result to "struct compunit_symtab *".
	All callers updated.  Create the subfile of the main source file.
	(watch_main_source_file_lossage): Rewrite to use buildsym_compunit.
	(reset_symtab_globals): Update.
	(end_symtab_get_static_block): Update to use buildsym_compunit.
	(end_symtab_without_blockvector): Rewrite.
	(end_symtab_with_blockvector): Change result to
	"struct compunit_symtab *".  All callers updated.
	Update to use buildsym_compunit.  Don't set symtab->dirname,
	instead set it in the compunit.
	Explicitly make sure main symtab is first in its list.
	Set debugformat, producer, blockvector, block_line_section, and
	macrotable in the compunit.
	(end_symtab_from_static_block): Change result to
	"struct compunit_symtab *".  All callers updated.
	(end_symtab, end_expandable_symtab): Ditto.
	(set_missing_symtab): Change symtab argument to
	"struct compunit_symtab *".  All callers updated.
	(augment_type_symtab): Ditto.
	(record_debugformat): Update to use buildsym_compunit.
	(record_producer): Update to use buildsym_compunit.
	* buildsym.h (struct subfile) <dirname>: Delete.
	<producer, debugformat>: Delete.
	<buildsym_compunit>: New member.
	(get_compunit_symtab): Declare.
	* dwarf2read.c (struct type_unit_group) <compunit_symtab>: Renamed
	from primary_symtab.  Change type to "struct compunit_symtab *".
	All uses updated.
	(dwarf2_start_symtab): Change result to "struct compunit_symtab *".
	All callers updated.
	(dwarf_decode_macros): Delete comp_dir argument.  All callers updated.
	(struct dwarf2_per_cu_quick_data) <compunit_symtab>: Renamed from
	symtab.  Change type to "struct compunit_symtab *".  All uses updated.
	(dw2_instantiate_symtab): Change result to "struct compunit_symtab *".
	All callers updated.
	(dw2_find_last_source_symtab): Ditto.
	(dw2_lookup_symbol): Ditto.
	(recursively_find_pc_sect_compunit_symtab): Renamed from
	recursively_find_pc_sect_symtab.  Change result to
	"struct compunit_symtab *".  All callers updated.
	(dw2_find_pc_sect_compunit_symtab): Renamed from
	dw2_find_pc_sect_symtab.  Change result to
	"struct compunit_symtab *".  All callers updated.
	(get_compunit_symtab): Renamed from get_symtab.  Change result to
	"struct compunit_symtab *".  All callers updated.
	(recursively_compute_inclusions): Change type of immediate_parent
	argument to "struct compunit_symtab *".  All callers updated.
	(compute_compunit_symtab_includes): Renamed from
	compute_symtab_includes.  All callers updated.  Rewrite to compute
	includes of compunit_symtabs and not symtabs.
	(process_full_comp_unit): Update to work with struct compunit_symtab.
	(process_full_type_unit): Ditto.
	(dwarf_decode_lines_1): Delete argument comp_dir.  All callers updated.
	(dwarf_decode_lines): Remove special case handling of main subfile.
	(macro_start_file): Delete argument comp_dir.  All callers updated.
	(dwarf_decode_macro_bytes): Ditto.
	* guile/scm-block.c (bkscm_print_block_syms_progress_smob): Update to
	use struct compunit_symtab.
	* i386-tdep.c (i386_skip_prologue): Fetch producer from compunit.
	* jit.c (finalize_symtab): Build compunit_symtab.
	* jv-lang.c (get_java_class_symtab): Change result to
	"struct compunit_symtab *".  All callers updated.
	* macroscope.c (sal_macro_scope): Fetch macro table from compunit.
	* macrotab.c (struct macro_table) <compunit_symtab>: Renamed from
	comp_dir.  Change type to "struct compunit_symtab *".
	All uses updated.
	(new_macro_table): Change comp_dir argument to cust,
	"struct compunit_symtab *".  All callers updated.
	* maint.c (struct cmd_stats) <nr_compunit_symtabs>: Renamed from
	nr_primary_symtabs.  All uses updated.
	(count_symtabs_and_blocks): Update to handle compunits.
	(report_command_stats): Update output, "primary symtabs" renamed to
	"compunits".
	* mdebugread.c (new_symtab): Change result to
	"struct compunit_symtab *".  All callers updated.
	(parse_procedure): Change type of search_symtab argument to
	"struct compunit_symtab *".  All callers updated.
	* objfiles.c (objfile_relocate1): Loop over blockvectors in a
	separate loop.
	* objfiles.h (struct objfile) <compunit_symtabs>: Renamed from
	symtabs.  Change type to "struct compunit_symtab *".  All uses updated.
	(ALL_OBJFILE_FILETABS): Renamed from ALL_OBJFILE_SYMTABS.
	All uses updated.
	(ALL_OBJFILE_COMPUNITS): Renamed from ALL_OBJFILE_PRIMARY_SYMTABS.
	All uses updated.
	(ALL_FILETABS): Renamed from ALL_SYMTABS.  All uses updated.
	(ALL_COMPUNITS): Renamed from ALL_PRIMARY_SYMTABS.  All uses updated.
	* psympriv.h (struct partial_symtab) <compunit_symtab>: Renamed from
	symtab.  Change type to "struct compunit_symtab *".  All uses updated.
	* psymtab.c (psymtab_to_symtab): Change result type to
	"struct compunit_symtab *".  All callers updated.
	(find_pc_sect_compunit_symtab_from_partial): Renamed from
	find_pc_sect_symtab_from_partial.  Change result type to
	"struct compunit_symtab *".  All callers updated.
	(lookup_symbol_aux_psymtabs): Change result type to
	"struct compunit_symtab *".  All callers updated.
	(find_last_source_symtab_from_partial): Ditto.
	* python/py-symtab.c (stpy_get_producer): Fetch producer from compunit.
	* source.c (forget_cached_source_info_for_objfile): Fetch debugformat
	and macro_table from compunit.
	* symfile-debug.c (debug_qf_find_last_source_symtab): Change result
	type to "struct compunit_symtab *".  All callers updated.
	(debug_qf_lookup_symbol): Ditto.
	(debug_qf_find_pc_sect_compunit_symtab): Renamed from
	debug_qf_find_pc_sect_symtab, change result type to
	"struct compunit_symtab *".  All callers updated.
	* symfile.c (allocate_symtab): Delete objfile argument.
	New argument cust.
	(allocate_compunit_symtab): New function.
	(add_compunit_symtab_to_objfile): New function.
	* symfile.h (struct quick_symbol_functions) <lookup_symbol>:
	Change result type to "struct compunit_symtab *".  All uses updated.
	<find_pc_sect_compunit_symtab>: Renamed from find_pc_sect_symtab.
	Change result type to "struct compunit_symtab *".  All uses updated.
	* symmisc.c (print_objfile_statistics): Compute blockvector count in
	separate loop.
	(dump_symtab_1): Update test for primary source symtab.
	(maintenance_info_symtabs): Update to handle compunit symtabs.
	(maintenance_check_symtabs): Ditto.
	* symtab.c (set_primary_symtab): Delete.
	(compunit_primary_filetab): New function.
	(compunit_language): New function.
	(iterate_over_some_symtabs): Change type of arguments "first",
	"after_last" to "struct compunit_symtab *".  All callers updated.
	Update to loop over symtabs in each compunit.
	(error_in_psymtab_expansion): Rename symtab argument to cust,
	and change type to "struct compunit_symtab *".  All callers updated.
	(find_pc_sect_compunit_symtab): Renamed from find_pc_sect_symtab.
	Change result type to "struct compunit_symtab *".  All callers updated.
	(find_pc_compunit_symtab): Renamed from find_pc_symtab.
	Change result type to "struct compunit_symtab *".  All callers updated.
	(find_pc_sect_line): Only loop over symtabs within selected compunit
	instead of all symtabs in the objfile.
	* symtab.h (struct symtab) <blockvector>: Moved to compunit_symtab.
	<compunit_symtab> New member.
	<block_line_section>: Moved to compunit_symtab.
	<locations_valid>: Ditto.
	<epilogue_unwind_valid>: Ditto.
	<macro_table>: Ditto.
	<dirname>: Ditto.
	<debugformat>: Ditto.
	<producer>: Ditto.
	<objfile>: Ditto.
	<call_site_htab>: Ditto.
	<includes>: Ditto.
	<user>: Ditto.
	<primary>: Delete
	(SYMTAB_COMPUNIT): New macro.
	(SYMTAB_BLOCKVECTOR): Update definition.
	(SYMTAB_OBJFILE): Update definition.
	(SYMTAB_DIRNAME): Update definition.
	(struct compunit_symtab): New type.  Common members among all source
	symtabs within a compilation unit moved here.  All uses updated.
	(COMPUNIT_OBJFILE): New macro.
	(COMPUNIT_FILETABS): New macro.
	(COMPUNIT_DEBUGFORMAT): New macro.
	(COMPUNIT_PRODUCER): New macro.
	(COMPUNIT_DIRNAME): New macro.
	(COMPUNIT_BLOCKVECTOR): New macro.
	(COMPUNIT_BLOCK_LINE_SECTION): New macro.
	(COMPUNIT_LOCATIONS_VALID): New macro.
	(COMPUNIT_EPILOGUE_UNWIND_VALID): New macro.
	(COMPUNIT_CALL_SITE_HTAB): New macro.
	(COMPUNIT_MACRO_TABLE): New macro.
	(ALL_COMPUNIT_FILETABS): New macro.
	(compunit_symtab_ptr): New typedef.
	(DEF_VEC_P (compunit_symtab_ptr)): New vector type.

gdb/testsuite/ChangeLog:

	* gdb.base/maint.exp: Update expected output.
 2014-11-20 07:47:44 -08:00
Gary Benson
c765fdb902 Remove spurious exceptions.h inclusions 
defs.h includes utils.h, and utils.h includes exceptions.h.  All GDB
.c files include defs.h as their first line, so no file other than
utils.h needs to include exceptions.h.  This commit removes all such
inclusions.

gdb/ChangeLog:

	* ada-lang.c: Do not include exceptions.h.
	* ada-valprint.c: Likewise.
	* amd64-tdep.c: Likewise.
	* auto-load.c: Likewise.
	* block.c: Likewise.
	* break-catch-throw.c: Likewise.
	* breakpoint.c: Likewise.
	* btrace.c: Likewise.
	* c-lang.c: Likewise.
	* cli/cli-cmds.c: Likewise.
	* cli/cli-interp.c: Likewise.
	* cli/cli-script.c: Likewise.
	* completer.c: Likewise.
	* corefile.c: Likewise.
	* corelow.c: Likewise.
	* cp-abi.c: Likewise.
	* cp-support.c: Likewise.
	* cp-valprint.c: Likewise.
	* darwin-nat.c: Likewise.
	* dwarf2-frame-tailcall.c: Likewise.
	* dwarf2-frame.c: Likewise.
	* dwarf2loc.c: Likewise.
	* dwarf2read.c: Likewise.
	* eval.c: Likewise.
	* event-loop.c: Likewise.
	* event-top.c: Likewise.
	* f-valprint.c: Likewise.
	* frame-unwind.c: Likewise.
	* frame.c: Likewise.
	* gdbtypes.c: Likewise.
	* gnu-v2-abi.c: Likewise.
	* gnu-v3-abi.c: Likewise.
	* guile/scm-auto-load.c: Likewise.
	* guile/scm-breakpoint.c: Likewise.
	* guile/scm-cmd.c: Likewise.
	* guile/scm-frame.c: Likewise.
	* guile/scm-lazy-string.c: Likewise.
	* guile/scm-param.c: Likewise.
	* guile/scm-symbol.c: Likewise.
	* guile/scm-type.c: Likewise.
	* hppa-hpux-tdep.c: Likewise.
	* i386-tdep.c: Likewise.
	* inf-loop.c: Likewise.
	* infcall.c: Likewise.
	* infcmd.c: Likewise.
	* infrun.c: Likewise.
	* interps.c: Likewise.
	* interps.h: Likewise.
	* jit.c: Likewise.
	* linespec.c: Likewise.
	* linux-nat.c: Likewise.
	* linux-thread-db.c: Likewise.
	* m32r-rom.c: Likewise.
	* main.c: Likewise.
	* memory-map.c: Likewise.
	* mi/mi-cmd-break.c: Likewise.
	* mi/mi-cmd-stack.c: Likewise.
	* mi/mi-interp.c: Likewise.
	* mi/mi-main.c: Likewise.
	* monitor.c: Likewise.
	* nto-procfs.c: Likewise.
	* objc-lang.c: Likewise.
	* p-valprint.c: Likewise.
	* parse.c: Likewise.
	* ppc-linux-tdep.c: Likewise.
	* printcmd.c: Likewise.
	* probe.c: Likewise.
	* python/py-auto-load.c: Likewise.
	* python/py-breakpoint.c: Likewise.
	* python/py-cmd.c: Likewise.
	* python/py-finishbreakpoint.c: Likewise.
	* python/py-frame.c: Likewise.
	* python/py-framefilter.c: Likewise.
	* python/py-function.c: Likewise.
	* python/py-gdb-readline.c: Likewise.
	* python/py-inferior.c: Likewise.
	* python/py-infthread.c: Likewise.
	* python/py-lazy-string.c: Likewise.
	* python/py-linetable.c: Likewise.
	* python/py-param.c: Likewise.
	* python/py-prettyprint.c: Likewise.
	* python/py-symbol.c: Likewise.
	* python/py-type.c: Likewise.
	* python/py-value.c: Likewise.
	* python/python-internal.h: Likewise.
	* python/python.c: Likewise.
	* record-btrace.c: Likewise.
	* record-full.c: Likewise.
	* regcache.c: Likewise.
	* remote-fileio.c: Likewise.
	* remote-mips.c: Likewise.
	* remote.c: Likewise.
	* rs6000-aix-tdep.c: Likewise.
	* rs6000-nat.c: Likewise.
	* skip.c: Likewise.
	* solib-darwin.c: Likewise.
	* solib-dsbt.c: Likewise.
	* solib-frv.c: Likewise.
	* solib-ia64-hpux.c: Likewise.
	* solib-spu.c: Likewise.
	* solib-svr4.c: Likewise.
	* solib.c: Likewise.
	* spu-tdep.c: Likewise.
	* stack.c: Likewise.
	* stap-probe.c: Likewise.
	* symfile-mem.c: Likewise.
	* symmisc.c: Likewise.
	* target.c: Likewise.
	* thread.c: Likewise.
	* top.c: Likewise.
	* tracepoint.c: Likewise.
	* tui/tui-interp.c: Likewise.
	* typeprint.c: Likewise.
	* utils.c: Likewise.
	* valarith.c: Likewise.
	* valops.c: Likewise.
	* valprint.c: Likewise.
	* value.c: Likewise.
	* varobj.c: Likewise.
	* windows-nat.c: Likewise.
	* xml-support.c: Likewise.
 2014-10-08 09:33:22 +01:00
Gary Benson
6d3d12ebef Include string.h in common-defs.h 
This commit includes string.h in common-defs.h and removes all other
inclusions.

gdb/
2014-08-07  Gary Benson  <gbenson@redhat.com>

	* common/common-defs.h: Include string.h.
	* aarch64-tdep.c: Do not include string.h.
	* ada-exp.y: Likewise.
	* ada-lang.c: Likewise.
	* ada-lex.l: Likewise.
	* ada-typeprint.c: Likewise.
	* ada-valprint.c: Likewise.
	* aix-thread.c: Likewise.
	* alpha-linux-tdep.c: Likewise.
	* alpha-mdebug-tdep.c: Likewise.
	* alpha-nat.c: Likewise.
	* alpha-osf1-tdep.c: Likewise.
	* alpha-tdep.c: Likewise.
	* alphanbsd-tdep.c: Likewise.
	* amd64-dicos-tdep.c: Likewise.
	* amd64-linux-tdep.c: Likewise.
	* amd64-nat.c: Likewise.
	* amd64-sol2-tdep.c: Likewise.
	* amd64fbsd-tdep.c: Likewise.
	* amd64obsd-tdep.c: Likewise.
	* arch-utils.c: Likewise.
	* arm-linux-nat.c: Likewise.
	* arm-linux-tdep.c: Likewise.
	* arm-tdep.c: Likewise.
	* arm-wince-tdep.c: Likewise.
	* armbsd-tdep.c: Likewise.
	* armnbsd-nat.c: Likewise.
	* armnbsd-tdep.c: Likewise.
	* armobsd-tdep.c: Likewise.
	* avr-tdep.c: Likewise.
	* ax-gdb.c: Likewise.
	* ax-general.c: Likewise.
	* bcache.c: Likewise.
	* bfin-tdep.c: Likewise.
	* breakpoint.c: Likewise.
	* build-id.c: Likewise.
	* buildsym.c: Likewise.
	* c-exp.y: Likewise.
	* c-lang.c: Likewise.
	* c-typeprint.c: Likewise.
	* c-valprint.c: Likewise.
	* charset.c: Likewise.
	* cli-out.c: Likewise.
	* cli/cli-cmds.c: Likewise.
	* cli/cli-decode.c: Likewise.
	* cli/cli-dump.c: Likewise.
	* cli/cli-interp.c: Likewise.
	* cli/cli-logging.c: Likewise.
	* cli/cli-script.c: Likewise.
	* cli/cli-setshow.c: Likewise.
	* cli/cli-utils.c: Likewise.
	* coffread.c: Likewise.
	* common/agent.c: Likewise.
	* common/buffer.c: Likewise.
	* common/buffer.h: Likewise.
	* common/common-utils.c: Likewise.
	* common/filestuff.c: Likewise.
	* common/filestuff.c: Likewise.
	* common/format.c: Likewise.
	* common/print-utils.c: Likewise.
	* common/rsp-low.c: Likewise.
	* common/signals.c: Likewise.
	* common/vec.h: Likewise.
	* common/xml-utils.c: Likewise.
	* core-regset.c: Likewise.
	* corefile.c: Likewise.
	* corelow.c: Likewise.
	* cp-abi.c: Likewise.
	* cp-name-parser.y: Likewise.
	* cp-support.c: Likewise.
	* cp-valprint.c: Likewise.
	* cris-tdep.c: Likewise.
	* d-exp.y: Likewise.
	* darwin-nat.c: Likewise.
	* dbxread.c: Likewise.
	* dcache.c: Likewise.
	* demangle.c: Likewise.
	* dicos-tdep.c: Likewise.
	* disasm.c: Likewise.
	* doublest.c: Likewise.
	* dsrec.c: Likewise.
	* dummy-frame.c: Likewise.
	* dwarf2-frame.c: Likewise.
	* dwarf2loc.c: Likewise.
	* dwarf2read.c: Likewise.
	* elfread.c: Likewise.
	* environ.c: Likewise.
	* eval.c: Likewise.
	* event-loop.c: Likewise.
	* exceptions.c: Likewise.
	* exec.c: Likewise.
	* expprint.c: Likewise.
	* f-exp.y: Likewise.
	* f-lang.c: Likewise.
	* f-typeprint.c: Likewise.
	* f-valprint.c: Likewise.
	* fbsd-nat.c: Likewise.
	* findcmd.c: Likewise.
	* findvar.c: Likewise.
	* fork-child.c: Likewise.
	* frame.c: Likewise.
	* frv-linux-tdep.c: Likewise.
	* frv-tdep.c: Likewise.
	* gdb.c: Likewise.
	* gdb_bfd.c: Likewise.
	* gdbarch.c: Likewise.
	* gdbarch.sh: Likewise.
	* gdbtypes.c: Likewise.
	* gnu-nat.c: Likewise.
	* gnu-v2-abi.c: Likewise.
	* gnu-v3-abi.c: Likewise.
	* go-exp.y: Likewise.
	* go-lang.c: Likewise.
	* go32-nat.c: Likewise.
	* guile/guile.c: Likewise.
	* guile/scm-auto-load.c: Likewise.
	* hppa-hpux-tdep.c: Likewise.
	* hppa-linux-nat.c: Likewise.
	* hppanbsd-tdep.c: Likewise.
	* hppaobsd-tdep.c: Likewise.
	* i386-cygwin-tdep.c: Likewise.
	* i386-dicos-tdep.c: Likewise.
	* i386-linux-tdep.c: Likewise.
	* i386-nto-tdep.c: Likewise.
	* i386-sol2-tdep.c: Likewise.
	* i386-tdep.c: Likewise.
	* i386bsd-tdep.c: Likewise.
	* i386gnu-nat.c: Likewise.
	* i386nbsd-tdep.c: Likewise.
	* i386obsd-tdep.c: Likewise.
	* i387-tdep.c: Likewise.
	* ia64-libunwind-tdep.c: Likewise.
	* ia64-linux-nat.c: Likewise.
	* inf-child.c: Likewise.
	* inf-ptrace.c: Likewise.
	* inf-ttrace.c: Likewise.
	* infcall.c: Likewise.
	* infcmd.c: Likewise.
	* inflow.c: Likewise.
	* infrun.c: Likewise.
	* interps.c: Likewise.
	* iq2000-tdep.c: Likewise.
	* irix5-nat.c: Likewise.
	* jv-exp.y: Likewise.
	* jv-lang.c: Likewise.
	* jv-typeprint.c: Likewise.
	* jv-valprint.c: Likewise.
	* language.c: Likewise.
	* linux-fork.c: Likewise.
	* linux-nat.c: Likewise.
	* lm32-tdep.c: Likewise.
	* m2-exp.y: Likewise.
	* m2-typeprint.c: Likewise.
	* m32c-tdep.c: Likewise.
	* m32r-linux-nat.c: Likewise.
	* m32r-linux-tdep.c: Likewise.
	* m32r-rom.c: Likewise.
	* m32r-tdep.c: Likewise.
	* m68hc11-tdep.c: Likewise.
	* m68k-tdep.c: Likewise.
	* m68kbsd-tdep.c: Likewise.
	* m68klinux-nat.c: Likewise.
	* m68klinux-tdep.c: Likewise.
	* m88k-tdep.c: Likewise.
	* machoread.c: Likewise.
	* macrocmd.c: Likewise.
	* main.c: Likewise.
	* mdebugread.c: Likewise.
	* mem-break.c: Likewise.
	* memattr.c: Likewise.
	* memory-map.c: Likewise.
	* mep-tdep.c: Likewise.
	* mi/mi-cmd-break.c: Likewise.
	* mi/mi-cmd-disas.c: Likewise.
	* mi/mi-cmd-env.c: Likewise.
	* mi/mi-cmd-stack.c: Likewise.
	* mi/mi-cmd-var.c: Likewise.
	* mi/mi-cmds.c: Likewise.
	* mi/mi-console.c: Likewise.
	* mi/mi-getopt.c: Likewise.
	* mi/mi-interp.c: Likewise.
	* mi/mi-main.c: Likewise.
	* mi/mi-parse.c: Likewise.
	* microblaze-rom.c: Likewise.
	* microblaze-tdep.c: Likewise.
	* mingw-hdep.c: Likewise.
	* minidebug.c: Likewise.
	* minsyms.c: Likewise.
	* mips-irix-tdep.c: Likewise.
	* mips-linux-tdep.c: Likewise.
	* mips-tdep.c: Likewise.
	* mips64obsd-tdep.c: Likewise.
	* mipsnbsd-tdep.c: Likewise.
	* mipsread.c: Likewise.
	* mn10300-linux-tdep.c: Likewise.
	* mn10300-tdep.c: Likewise.
	* monitor.c: Likewise.
	* moxie-tdep.c: Likewise.
	* mt-tdep.c: Likewise.
	* nat/linux-btrace.c: Likewise.
	* nat/linux-osdata.c: Likewise.
	* nat/linux-procfs.c: Likewise.
	* nat/linux-ptrace.c: Likewise.
	* nat/linux-waitpid.c: Likewise.
	* nbsd-tdep.c: Likewise.
	* nios2-linux-tdep.c: Likewise.
	* nto-procfs.c: Likewise.
	* nto-tdep.c: Likewise.
	* objc-lang.c: Likewise.
	* objfiles.c: Likewise.
	* opencl-lang.c: Likewise.
	* osabi.c: Likewise.
	* osdata.c: Likewise.
	* p-exp.y: Likewise.
	* p-lang.c: Likewise.
	* p-typeprint.c: Likewise.
	* parse.c: Likewise.
	* posix-hdep.c: Likewise.
	* ppc-linux-nat.c: Likewise.
	* ppc-sysv-tdep.c: Likewise.
	* ppcfbsd-tdep.c: Likewise.
	* ppcnbsd-tdep.c: Likewise.
	* ppcobsd-tdep.c: Likewise.
	* printcmd.c: Likewise.
	* procfs.c: Likewise.
	* prologue-value.c: Likewise.
	* python/py-auto-load.c: Likewise.
	* python/py-gdb-readline.c: Likewise.
	* ravenscar-thread.c: Likewise.
	* regcache.c: Likewise.
	* registry.c: Likewise.
	* remote-fileio.c: Likewise.
	* remote-m32r-sdi.c: Likewise.
	* remote-mips.c: Likewise.
	* remote-notif.c: Likewise.
	* remote-sim.c: Likewise.
	* remote.c: Likewise.
	* reverse.c: Likewise.
	* rs6000-aix-tdep.c: Likewise.
	* ser-base.c: Likewise.
	* ser-go32.c: Likewise.
	* ser-mingw.c: Likewise.
	* ser-pipe.c: Likewise.
	* ser-tcp.c: Likewise.
	* ser-unix.c: Likewise.
	* serial.c: Likewise.
	* sh-tdep.c: Likewise.
	* sh64-tdep.c: Likewise.
	* shnbsd-tdep.c: Likewise.
	* skip.c: Likewise.
	* sol-thread.c: Likewise.
	* solib-dsbt.c: Likewise.
	* solib-frv.c: Likewise.
	* solib-osf.c: Likewise.
	* solib-som.c: Likewise.
	* solib-spu.c: Likewise.
	* solib-target.c: Likewise.
	* solib.c: Likewise.
	* somread.c: Likewise.
	* source.c: Likewise.
	* sparc-nat.c: Likewise.
	* sparc-sol2-tdep.c: Likewise.
	* sparc-tdep.c: Likewise.
	* sparc64-tdep.c: Likewise.
	* sparc64fbsd-tdep.c: Likewise.
	* sparc64nbsd-tdep.c: Likewise.
	* sparcnbsd-tdep.c: Likewise.
	* spu-linux-nat.c: Likewise.
	* spu-multiarch.c: Likewise.
	* spu-tdep.c: Likewise.
	* stabsread.c: Likewise.
	* stack.c: Likewise.
	* std-regs.c: Likewise.
	* symfile.c: Likewise.
	* symmisc.c: Likewise.
	* symtab.c: Likewise.
	* target.c: Likewise.
	* thread.c: Likewise.
	* tilegx-linux-nat.c: Likewise.
	* tilegx-tdep.c: Likewise.
	* top.c: Likewise.
	* tracepoint.c: Likewise.
	* tui/tui-command.c: Likewise.
	* tui/tui-data.c: Likewise.
	* tui/tui-disasm.c: Likewise.
	* tui/tui-file.c: Likewise.
	* tui/tui-layout.c: Likewise.
	* tui/tui-out.c: Likewise.
	* tui/tui-regs.c: Likewise.
	* tui/tui-source.c: Likewise.
	* tui/tui-stack.c: Likewise.
	* tui/tui-win.c: Likewise.
	* tui/tui-windata.c: Likewise.
	* tui/tui-winsource.c: Likewise.
	* typeprint.c: Likewise.
	* ui-file.c: Likewise.
	* ui-out.c: Likewise.
	* user-regs.c: Likewise.
	* utils.c: Likewise.
	* v850-tdep.c: Likewise.
	* valarith.c: Likewise.
	* valops.c: Likewise.
	* valprint.c: Likewise.
	* value.c: Likewise.
	* varobj.c: Likewise.
	* vax-tdep.c: Likewise.
	* vaxnbsd-tdep.c: Likewise.
	* vaxobsd-tdep.c: Likewise.
	* windows-nat.c: Likewise.
	* xcoffread.c: Likewise.
	* xml-support.c: Likewise.
	* xstormy16-tdep.c: Likewise.
	* xtensa-linux-nat.c: Likewise.

gdb/gdbserver/
2014-08-07  Gary Benson  <gbenson@redhat.com>

	* server.h: Do not include string.h.
	* event-loop.c: Likewise.
	* linux-low.c: Likewise.
	* regcache.c: Likewise.
	* remote-utils.c: Likewise.
	* spu-low.c: Likewise.
	* utils.c: Likewise.
 2014-08-07 09:06:47 +01:00
Gary Benson
dccbb60975 Include gdb_assert.h in common-defs.h 
This commit includes gdb_assert.h in common-defs.h and removes all
other inclusions.

gdb/
2014-08-07  Gary Benson  <gbenson@redhat.com>

	* common/common-defs.h: Include gdb_assert.h.
	* aarch64-tdep.c: Do not include gdb_assert.h.
	* addrmap.c: Likewise.
	* aix-thread.c: Likewise.
	* alpha-linux-tdep.c: Likewise.
	* alpha-mdebug-tdep.c: Likewise.
	* alphanbsd-tdep.c: Likewise.
	* amd64-nat.c: Likewise.
	* amd64-tdep.c: Likewise.
	* amd64bsd-nat.c: Likewise.
	* amd64fbsd-nat.c: Likewise.
	* amd64fbsd-tdep.c: Likewise.
	* amd64nbsd-nat.c: Likewise.
	* amd64nbsd-tdep.c: Likewise.
	* amd64obsd-nat.c: Likewise.
	* amd64obsd-tdep.c: Likewise.
	* arch-utils.c: Likewise.
	* arm-tdep.c: Likewise.
	* armbsd-tdep.c: Likewise.
	* auxv.c: Likewise.
	* bcache.c: Likewise.
	* bfin-tdep.c: Likewise.
	* blockframe.c: Likewise.
	* breakpoint.c: Likewise.
	* bsd-kvm.c: Likewise.
	* bsd-uthread.c: Likewise.
	* buildsym.c: Likewise.
	* c-exp.y: Likewise.
	* c-lang.c: Likewise.
	* charset.c: Likewise.
	* cleanups.c: Likewise.
	* cli-out.c: Likewise.
	* cli/cli-decode.c: Likewise.
	* cli/cli-dump.c: Likewise.
	* cli/cli-logging.c: Likewise.
	* cli/cli-script.c: Likewise.
	* cli/cli-utils.c: Likewise.
	* coffread.c: Likewise.
	* common/common-utils.c: Likewise.
	* common/queue.h: Likewise.
	* common/signals.c: Likewise.
	* common/vec.h: Likewise.
	* complaints.c: Likewise.
	* completer.c: Likewise.
	* corelow.c: Likewise.
	* cp-abi.c: Likewise.
	* cp-name-parser.y: Likewise.
	* cp-namespace.c: Likewise.
	* cp-support.c: Likewise.
	* cris-tdep.c: Likewise.
	* dbxread.c: Likewise.
	* dictionary.c: Likewise.
	* doublest.c: Likewise.
	* dsrec.c: Likewise.
	* dummy-frame.c: Likewise.
	* dwarf2-frame-tailcall.c: Likewise.
	* dwarf2-frame.c: Likewise.
	* dwarf2expr.c: Likewise.
	* dwarf2loc.c: Likewise.
	* dwarf2read.c: Likewise.
	* eval.c: Likewise.
	* event-loop.c: Likewise.
	* exceptions.c: Likewise.
	* expprint.c: Likewise.
	* f-valprint.c: Likewise.
	* fbsd-nat.c: Likewise.
	* findvar.c: Likewise.
	* frame-unwind.c: Likewise.
	* frame.c: Likewise.
	* frv-tdep.c: Likewise.
	* gcore.c: Likewise.
	* gdb-dlfcn.c: Likewise.
	* gdb_bfd.c: Likewise.
	* gdbarch.c: Likewise.
	* gdbarch.sh: Likewise.
	* gdbtypes.c: Likewise.
	* gnu-nat.c: Likewise.
	* gnu-v3-abi.c: Likewise.
	* go-lang.c: Likewise.
	* guile/scm-exception.c: Likewise.
	* guile/scm-gsmob.c: Likewise.
	* guile/scm-lazy-string.c: Likewise.
	* guile/scm-math.c: Likewise.
	* guile/scm-pretty-print.c: Likewise.
	* guile/scm-safe-call.c: Likewise.
	* guile/scm-utils.c: Likewise.
	* guile/scm-value.c: Likewise.
	* h8300-tdep.c: Likewise.
	* hppa-hpux-nat.c: Likewise.
	* hppa-tdep.c: Likewise.
	* hppanbsd-tdep.c: Likewise.
	* hppaobsd-tdep.c: Likewise.
	* i386-darwin-nat.c: Likewise.
	* i386-darwin-tdep.c: Likewise.
	* i386-nto-tdep.c: Likewise.
	* i386-tdep.c: Likewise.
	* i386bsd-nat.c: Likewise.
	* i386fbsd-tdep.c: Likewise.
	* i386gnu-nat.c: Likewise.
	* i386nbsd-tdep.c: Likewise.
	* i386obsd-tdep.c: Likewise.
	* i387-tdep.c: Likewise.
	* ia64-libunwind-tdep.c: Likewise.
	* ia64-tdep.c: Likewise.
	* inf-ptrace.c: Likewise.
	* inf-ttrace.c: Likewise.
	* infcall.c: Likewise.
	* infcmd.c: Likewise.
	* infrun.c: Likewise.
	* inline-frame.c: Likewise.
	* interps.c: Likewise.
	* jv-lang.c: Likewise.
	* jv-typeprint.c: Likewise.
	* linux-fork.c: Likewise.
	* linux-nat.c: Likewise.
	* linux-thread-db.c: Likewise.
	* m32c-tdep.c: Likewise.
	* m32r-linux-nat.c: Likewise.
	* m32r-tdep.c: Likewise.
	* m68k-tdep.c: Likewise.
	* m68kbsd-nat.c: Likewise.
	* m68kbsd-tdep.c: Likewise.
	* m88k-tdep.c: Likewise.
	* machoread.c: Likewise.
	* macroexp.c: Likewise.
	* macrotab.c: Likewise.
	* maint.c: Likewise.
	* mdebugread.c: Likewise.
	* memory-map.c: Likewise.
	* mep-tdep.c: Likewise.
	* mi/mi-common.c: Likewise.
	* microblaze-tdep.c: Likewise.
	* mingw-hdep.c: Likewise.
	* mips-linux-nat.c: Likewise.
	* mips-linux-tdep.c: Likewise.
	* mips-tdep.c: Likewise.
	* mips64obsd-tdep.c: Likewise.
	* mipsnbsd-tdep.c: Likewise.
	* mn10300-linux-tdep.c: Likewise.
	* mn10300-tdep.c: Likewise.
	* moxie-tdep.c: Likewise.
	* mt-tdep.c: Likewise.
	* nat/linux-btrace.c: Likewise.
	* nat/linux-osdata.c: Likewise.
	* nat/linux-ptrace.c: Likewise.
	* nat/mips-linux-watch.c: Likewise.
	* nios2-linux-tdep.c: Likewise.
	* nios2-tdep.c: Likewise.
	* objc-lang.c: Likewise.
	* objfiles.c: Likewise.
	* obsd-nat.c: Likewise.
	* opencl-lang.c: Likewise.
	* osabi.c: Likewise.
	* parse.c: Likewise.
	* ppc-linux-nat.c: Likewise.
	* ppc-sysv-tdep.c: Likewise.
	* ppcfbsd-nat.c: Likewise.
	* ppcfbsd-tdep.c: Likewise.
	* ppcnbsd-nat.c: Likewise.
	* ppcnbsd-tdep.c: Likewise.
	* ppcobsd-nat.c: Likewise.
	* ppcobsd-tdep.c: Likewise.
	* printcmd.c: Likewise.
	* procfs.c: Likewise.
	* prologue-value.c: Likewise.
	* psymtab.c: Likewise.
	* python/py-lazy-string.c: Likewise.
	* python/py-value.c: Likewise.
	* regcache.c: Likewise.
	* reggroups.c: Likewise.
	* registry.c: Likewise.
	* remote-sim.c: Likewise.
	* remote.c: Likewise.
	* rs6000-aix-tdep.c: Likewise.
	* rs6000-tdep.c: Likewise.
	* s390-linux-tdep.c: Likewise.
	* score-tdep.c: Likewise.
	* ser-base.c: Likewise.
	* ser-mingw.c: Likewise.
	* sh-tdep.c: Likewise.
	* sh64-tdep.c: Likewise.
	* solib-darwin.c: Likewise.
	* solib-spu.c: Likewise.
	* solib-svr4.c: Likewise.
	* source.c: Likewise.
	* sparc-nat.c: Likewise.
	* sparc-sol2-tdep.c: Likewise.
	* sparc-tdep.c: Likewise.
	* sparc64-sol2-tdep.c: Likewise.
	* sparc64-tdep.c: Likewise.
	* sparc64fbsd-tdep.c: Likewise.
	* sparc64nbsd-tdep.c: Likewise.
	* sparc64obsd-tdep.c: Likewise.
	* sparcnbsd-tdep.c: Likewise.
	* sparcobsd-tdep.c: Likewise.
	* spu-multiarch.c: Likewise.
	* spu-tdep.c: Likewise.
	* stabsread.c: Likewise.
	* stack.c: Likewise.
	* symfile.c: Likewise.
	* symtab.c: Likewise.
	* target-descriptions.c: Likewise.
	* target-memory.c: Likewise.
	* target.c: Likewise.
	* tic6x-linux-tdep.c: Likewise.
	* tic6x-tdep.c: Likewise.
	* tilegx-linux-nat.c: Likewise.
	* tilegx-tdep.c: Likewise.
	* top.c: Likewise.
	* tramp-frame.c: Likewise.
	* tui/tui-out.c: Likewise.
	* tui/tui-winsource.c: Likewise.
	* ui-out.c: Likewise.
	* user-regs.c: Likewise.
	* utils.c: Likewise.
	* v850-tdep.c: Likewise.
	* valops.c: Likewise.
	* value.c: Likewise.
	* varobj.c: Likewise.
	* vax-nat.c: Likewise.
	* xml-syscall.c: Likewise.
	* xml-tdesc.c: Likewise.
	* xstormy16-tdep.c: Likewise.
	* xtensa-linux-nat.c: Likewise.
	* xtensa-tdep.c: Likewise.

gdb/gdbserver/
2014-08-07  Gary Benson  <gbenson@redhat.com>

	* server.h: Do not include gdb_assert.h.
 2014-08-07 09:06:45 +01:00
Yao Qi
b67a2c6fd4 Associate dummy_frame with ptid 
This patch is to add ptid into dummy_frame and extend frame_id to
dummy_frame_id (which has a ptid field).  With this change, GDB uses
dummy_frame_id (thread ptid and frame_id) to find the dummy frames.

Currently, dummy frames are looked up by frame_id, which isn't
accurate in non-stop or multi-process mode.  The test case
gdb.multi/dummy-frame-restore.exp shows the problem and this patch can
fix it.

Test dummy-frame-restore.exp makes two inferiors stop at
different functions, say, inferior 1 stops at f1 while inferior 2
stops at f2.  Set a breakpoint to a function, do the inferior call
in two inferiors, and GDB has two dummy frames of the same frame_id.
When the inferior call is finished, GDB will look up a dummy frame
from its stack/list and restore the inferior's regcache.  Two
inferiors are finished in different orders, the inferiors' states are
restored differently, which is wrong.  Running dummy-frame-restore.exp
under un-patched GDB, we'll get two fails:

FAIL: gdb.multi/dummy-frame-restore.exp: inf 2 first: after infcall: bt in inferior 2
FAIL: gdb.multi/dummy-frame-restore.exp: inf 2 first: after infcall: bt in inferior 1

With this patch applied, GDB will choose the correct dummy_frame to
restore for a given inferior, because ptid is considered when looking up
dummy frames.  Two fails above are fixed.

Regression tested on x86_64-linux, both native and gdbserver.

gdb:

2014-06-27  Yao Qi  <yao@codesourcery.com>

	* breakpoint.c (check_longjmp_breakpoint_for_call_dummy):
	Change parameter type to 'struct thread_info *'.  Caller
	updated.
	* breakpoint.h (check_longjmp_breakpoint_for_call_dummy):
	Update declaration.
	* dummy-frame.c (struct dummy_frame_id): New.
	(dummy_frame_id_eq): New function.
	(struct dummy_frame) <id>: Change its type to 'struct
	dummy_frame_id'.
	(dummy_frame_push): Add parameter ptid and save it in
	dummy_frame_id.
	(pop_dummy_frame_bpt): Use ptid of dummy_frame instead of
	inferior_ptid.
	(pop_dummy_frame): Assert that the ptid of dummy_frame equals
	to inferior_ptid.
	(lookup_dummy_frame): Change parameter type to 'struct
	dummy_frame_id *'.  Callers updated.  Call dummy_frame_id_eq
	instead of frame_id_eq.
	(dummy_frame_pop): Add parameter ptid.  Callers updated.
	Update comments.  Compose dummy_frame_id and pass it to
	lookup_dummy_frame.
	(dummy_frame_discard): Add parameter ptid.
	(dummy_frame_sniffer): Compose dummy_frame_id and call
	dummy_frame_id_eq instead of frame_id_eq.
	(fprint_dummy_frames): Print ptid.
	* dummy-frame.h: Remove comments.
	(dummy_frame_push): Add ptid in declaration.
	(dummy_frame_pop, dummy_frame_discard): Likewise.

gdb/testsuite:

2014-06-27  Yao Qi  <yao@codesourcery.com>

	* gdb.multi/dummy-frame-restore.exp: New.
	* gdb.multi/dummy-frame-restore.c: New.

gdb/doc:

2014-06-27  Yao Qi  <yao@codesourcery.com>

	* gdb.texinfo (Maintenance Commands): Update the output of
	'maint print dummy-frames' command.
 2014-06-27 20:06:56 +08:00
Tom Tromey
3977b71f1d constify struct block in some places 
This makes some spots in gdb, particularly general_symbol_info, use a
"const struct block", then fixes the fallout.

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

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

	* varobj.c (varobj_create): Update.
	* valops.c (value_of_this): Update.
	* tracepoint.c (add_local_symbols, scope_info): Update.
	* symtab.h (struct general_symbol_info) <block>: Now const.
	* symtab.c (skip_prologue_sal)
	(default_make_symbol_completion_list_break_on)
	(skip_prologue_using_sal): Update.
	* stack.h (iterate_over_block_locals)
	(iterate_over_block_local_vars): Update.
	* stack.c (print_frame_args): Update.
	(iterate_over_block_locals, iterate_over_block_local_vars): Make
	parameter const.
	(get_selected_block): Make return type const.
	* python/py-frame.c (frapy_block): Update.
	* python/py-block.c (gdbpy_block_for_pc): Update.
	* p-exp.y (%union) <bval>: Now const.
	* mi/mi-cmd-stack.c (list_args_or_locals): Update.
	* mdebugread.c (mylookup_symbol, parse_procedure): Update.
	* m2-exp.y (%union) <bval>: Now const.
	* linespec.c (get_current_search_block): Make return type const.
	(create_sals_line_offset, find_label_symbols): Update.
	* inline-frame.c (inline_frame_sniffer, skip_inline_frames):
	Update.
	(block_starting_point_at): Make "block" const.
	* infrun.c (insert_exception_resume_breakpoint): Make "b" const.
	(check_exception_resume): Update.
	* guile/scm-frame.c (gdbscm_frame_block): Update.
	* guile/scm-block.c (gdbscm_lookup_block): Update.
	* frame.h (get_frame_block): Update.
	(get_selected_block): Make return type const.
	* frame.c (frame_id_inner): Update.
	* f-valprint.c (info_common_command_for_block)
	(info_common_command): Update.
	* dwarf2loc.c (dwarf2_find_location_expression)
	(dwarf_expr_frame_base, dwarf2_compile_expr_to_ax)
	(locexpr_describe_location_piece): Update.
	* c-exp.y (%union) <bval>: Now const.
	* breakpoint.c (resolve_sal_pc): Update.
	* blockframe.c (get_frame_block):Make return type const.
	(get_pc_function_start, get_frame_function, find_pc_sect_function)
	(block_innermost_frame): Update.
	* block.h (blockvector_for_pc, blockvector_for_pc_sect)
	(block_for_pc, block_for_pc_sect): Update.
	* block.c (blockvector_for_pc_sect, blockvector_for_pc): Make
	'pblock' const.
	(block_for_pc_sect, block_for_pc): Make return type const.
	* ax-gdb.c (gen_expr): Update.
	* alpha-mdebug-tdep.c (find_proc_desc): Update.
	* ada-lang.c (ada_read_renaming_var_value): Make 'block' const.
	(ada_make_symbol_completion_list, ada_add_exceptions_from_frame)
	(ada_read_var_value): Update.
	* ada-exp.y (struct name_info) <block>: Now const.
	(%union): Likewise.
	(block_lookup): Constify.
 2014-06-18 08:16:52 -06:00
Tom Tromey
635c7e8a05 make calls to help_list use enumerator 
Currently there are many calls to help_list that pass the constant -1
as the "class" value.  However, the parameter is declared as being of
type enum command_class, and uses of the constant violate this
abstraction.

This patch fixes the error everywhere it occurs in the gdb sources.

Tested by rebuilding.

2014-06-13  Tom Tromey  <tromey@redhat.com>

	* cp-support.c (maint_cplus_command): Pass all_commands, not -1,
	to help_list.
	* guile/guile.c (info_guile_command): Pass all_commands, not -1,
	to help_list.
	* tui/tui-win.c (tui_command): Pass all_commands, not -1, to
	help_list.
	* tui/tui-regs.c (tui_reg_command): Pass all_commands, not -1, to
	help_list.Pass all_commands, not -1, to help_list.
	* cli/cli-dump.c (dump_command, append_command)
	(srec_dump_command, ihex_dump_command, tekhex_dump_command)
	(binary_dump_command, binary_append_command): Pass all_commands,
	not -1, to help_list.
	* cli/cli-cmds.c (info_command, set_debug): Pass all_commands, not
	-1, to help_list.
	* valprint.c (set_print, set_print_raw): Pass all_commands, not
	-1, to help_list.
	* typeprint.c (set_print_type): Pass all_commands, not -1, to
	help_list.
	* top.c (set_history): Pass all_commands, not -1, to help_list.
	* target-descriptions.c (set_tdesc_cmd, unset_tdesc_cmd): Pass
	all_commands, not -1, to help_list.
	* symfile.c (overlay_command): Pass all_commands, not -1, to
	help_list.
	* spu-tdep.c (info_spu_command): Pass all_commands, not -1, to
	help_list.
	* serial.c (serial_set_cmd): Pass all_commands, not -1, to
	help_list.
	* ser-tcp.c (set_tcp_cmd, show_tcp_cmd): Pass all_commands, not
	-1, to help_list.
	* remote.c (remote_command, set_remote_cmd): Pass all_commands,
	not -1, to help_list.
	* ravenscar-thread.c (set_ravenscar_command): Pass all_commands,
	not -1, to help_list.
	* maint.c (maintenance_command, maintenance_info_command)
	(maintenance_print_command, maintenance_set_cmd): Pass
	all_commands, not -1, to help_list.
	* macrocmd.c (macro_command): Pass all_commands, not -1, to
	help_list.
	* language.c (set_check): Pass all_commands, not -1, to help_list.
	* infcmd.c (unset_command): Pass all_commands, not -1, to
	help_list.
	* frame.c (set_backtrace_cmd): Pass all_commands, not -1, to
	help_list.
	* dwarf2read.c (set_dwarf2_cmd): Pass all_commands, not -1, to
	help_list.
	* dcache.c (set_dcache_command): Pass all_commands, not -1, to
	help_list.
	* breakpoint.c (save_command): Pass all_commands, not -1, to
	help_list.
	* ada-lang.c (maint_set_ada_cmd, set_ada_command): Pass
	all_commands, not -1, to help_list.
 2014-06-13 09:29:19 -06:00
Andrew Burgess
53e8a631a0 Add a TRY_CATCH to get_prev_frame_always to better manage errors during unwind. 
https://sourceware.org/ml/gdb-patches/2014-05/msg00737.html

Currently a MEMORY_ERROR raised during unwinding a frame will cause the
unwind to stop with an error message, for example:

  (gdb) bt
  #0  breakpt () at amd64-invalid-stack-middle.c:27
  #1  0x00000000004008f0 in func5 () at amd64-invalid-stack-middle.c:32
  #2  0x0000000000400900 in func4 () at amd64-invalid-stack-middle.c:38
  #3  0x0000000000400910 in func3 () at amd64-invalid-stack-middle.c:44
  #4  0x0000000000400928 in func2 () at amd64-invalid-stack-middle.c:50
  Cannot access memory at address 0x2aaaaaab0000

However, frame #4 is marked as being the end of the stack unwind, so a
subsequent request for the backtrace looses the error message, such as:

  (gdb) bt
  #0  breakpt () at amd64-invalid-stack-middle.c:27
  #1  0x00000000004008f0 in func5 () at amd64-invalid-stack-middle.c:32
  #2  0x0000000000400900 in func4 () at amd64-invalid-stack-middle.c:38
  #3  0x0000000000400910 in func3 () at amd64-invalid-stack-middle.c:44
  #4  0x0000000000400928 in func2 () at amd64-invalid-stack-middle.c:50

When fetching the backtrace, or requesting the stack depth using the MI
interface the situation is even worse, the first time a request is made
we encounter the memory error and so the MI returns an error instead of
the correct result, for example:

  (gdb) -stack-info-depth
  ^error,msg="Cannot access memory at address 0x2aaaaaab0000"

Or,

  (gdb) -stack-list-frames
  ^error,msg="Cannot access memory at address 0x2aaaaaab0000"

However, once one of these commands has been used gdb has, internally,
walked the stack and figured that out that frame #4 is the bottom of the
stack, so the second time an MI command is tried you'll get the "expected"
result:

  (gdb) -stack-info-depth
  ^done,depth="5"

Or,

  (gdb) -stack-list-frames
  ^done,stack=[frame={level="0", .. snip lots .. }]

After this patch the MEMORY_ERROR encountered during the frame unwind is
attached to frame #4 as the stop reason, and is displayed in the CLI each
time the backtrace is requested.  In the MI, catching the error means that
the "expected" result is returned the first time the MI command is issued.
So, from the CLI the results of the backtrace will be:

  (gdb) bt
  #0  breakpt () at amd64-invalid-stack-middle.c:27
  #1  0x00000000004008f0 in func5 () at amd64-invalid-stack-middle.c:32
  #2  0x0000000000400900 in func4 () at amd64-invalid-stack-middle.c:38
  #3  0x0000000000400910 in func3 () at amd64-invalid-stack-middle.c:44
  #4  0x0000000000400928 in func2 () at amd64-invalid-stack-middle.c:50
  Backtrace stopped: Cannot access memory at address 0x2aaaaaab0000

Each and every time that the backtrace is requested, while the MI output
will similarly be consistently:

  (gdb) -stack-info-depth
  ^done,depth="5"

Or,

  (gdb) -stack-list-frames
  ^done,stack=[frame={level="0", .. snip lots .. }]

gdb/ChangeLog:

	* frame.c (struct frame_info): Add stop_string field.
	(get_prev_frame_always_1): Renamed from get_prev_frame_always.
	(get_prev_frame_always): Old content moved into
	get_prev_frame_always_1.  Call get_prev_frame_always_1 inside
	TRY_CATCH, handle MEMORY_ERROR exceptions.
	(frame_stop_reason_string): New function definition.
	* frame.h (unwind_stop_reason_to_string): Extend comment to
	mention frame_stop_reason_string.
	(frame_stop_reason_string): New function declaration.
	* stack.c (frame_info): Switch to frame_stop_reason_string.
	(backtrace_command_1): Switch to frame_stop_reason_string.
	* unwind_stop_reason.def: Add UNWIND_MEMORY_ERROR.
	(LAST_ENTRY): Changed to UNWIND_MEMORY_ERROR.
	* guile/lib/gdb.scm: Add FRAME_UNWIND_MEMORY_ERROR to export list.

gdb/doc/ChangeLog:

	* guile.texi (Frames In Guile): Mention FRAME_UNWIND_MEMORY_ERROR.
	* python.texi (Frames In Python): Mention
	gdb.FRAME_UNWIND_MEMORY_ERROR.

gdb/testsuite/ChangeLog:

	* gdb.arch/amd64-invalid-stack-middle.exp: Update expected results.
	* gdb.arch/amd64-invalid-stack-top.exp: Likewise.
 2014-05-30 22:44:36 +01:00
Andrew Burgess
70e38b8e98 Rename frame_stop_reason_string to unwind_stop_reason_to_string. 
https://sourceware.org/ml/gdb-patches/2014-05/msg00721.html

This function is confusingly named, the "frame_" in the name implies it
somehow is frame dependent, when in reality the function just converts an
'enum unwind_stop_reason' value to a string.

gdb/ChangeLog:

	* frame.c (frame_stop_reason_string): Rename to ...
	(unwind_stop_reason_to_string): this.
	* frame.h (frame_stop_reason_string): Rename to ...
	(unwind_stop_reason_to_string): this.
	* stack.c (frame_info): Update call to frame_stop_reason_string.
	(backtrace_command_1): Likewise.
	* guile/scm-frame.c (gdbscm_unwind_stop_reason_string): Likewise.
	* python/py-frame.c (gdbpy_frame_stop_reason_string): Likewise.
 2014-05-30 22:40:29 +01:00
Andrew Burgess
938f0e2f67 Remove previous frame if an error occurs when computing frame id during unwind. 
https://sourceware.org/ml/gdb-patches/2014-05/msg00712.html

If an error is thrown during computing a frame id then the frame is left
in existence but without a valid frame id, this will trigger internal
errors if/when the frame is later visited (for example in a backtrace).

This patch catches errors raised while computing the frame id, and
arranges for the new frame, the one without a frame id, to be removed
from the linked list of frames.

gdb/ChangeLog:

	* frame.c (remove_prev_frame): New function.
	(get_prev_frame_if_no_cycle): Create / discard cleanup using
	remove_prev_frame.

gdb/testsuite/ChangeLog:

	* gdb.arch/amd64-invalid-stack-middle.S: New file.
	* gdb.arch/amd64-invalid-stack-middle.c: New file.
	* gdb.arch/amd64-invalid-stack-middle.exp: New file.
	* gdb.arch/amd64-invalid-stack-top.c: New file.
	* gdb.arch/amd64-invalid-stack-top.exp: New file.
 2014-05-30 22:36:14 +01:00
Pedro Alves
51d481464e Fix PR backtrace/15558 
This PR is about an assertion failure in GDB that can be triggered by
setting "backtrace limit" to a value that causes GDB to stop unwinding
after an inline frame.  In this case, an assertion in
inline_frame_this_id will trigger:

  /* We need a valid frame ID, so we need to be based on a valid
     frame.  (...).  */
  gdb_assert (frame_id_p (*this_id));

Looking at the function:

 static void
 inline_frame_this_id (struct frame_info *this_frame,
		       void **this_cache,
		       struct frame_id *this_id)
 {
   struct symbol *func;

   /* In order to have a stable frame ID for a given inline function,
      we must get the stack / special addresses from the underlying
      real frame's this_id method.  So we must call get_prev_frame.
      Because we are inlined into some function, there must be previous
      frames, so this is safe - as long as we're careful not to
      create any cycles.  */
   *this_id = get_frame_id (get_prev_frame (this_frame));

we see we're computing the frame id for the inline frame.  If this is
an inline frame, which is a virtual frame constructed based on debug
info, on top of a real stack frame, we should _always_ be able to find
where the frame was inlined into, as that ultimately just means
peeling off the virtual frames on top of the real stack frame.  If
there ultimately was no prev (real) stack frame, then we wouldn't have
been able to construct the inline frame either, by design.  That's
what the assertion catches.

So we have an inline frame, we should _always_ be able to compute its
ID, even if that means bypassing the user backtrace limits to get at
the real stack frame's info.  The problem is that inline_frame_id
calls get_prev_frame, and that takes user backtrace limits into
account.  Code that wants to bypass the limits calls get_prev_frame_1
instead.

Note how get_prev_frame_1 already skips all checks for inline frames:

   /* If we are unwinding from an inline frame, all of the below tests
      were already performed when we unwound from the next non-inline
      frame.  We must skip them, since we can not get THIS_FRAME's ID
      until we have unwound all the way down to the previous non-inline
      frame.  */
   if (get_frame_type (this_frame) == INLINE_FRAME)
     return get_prev_frame_if_no_cycle (this_frame);

And note how the related frame_unwind_caller_id function also uses
get_prev_frame_1:

 struct frame_id
 frame_unwind_caller_id (struct frame_info *next_frame)
 {
   struct frame_info *this_frame;

   /* Use get_prev_frame_1, and not get_prev_frame.  The latter will truncate
      the frame chain, leading to this function unintentionally
      returning a null_frame_id (e.g., when a caller requests the frame
      ID of "main()"s caller.  */

   next_frame = skip_artificial_frames (next_frame);
   this_frame = get_prev_frame_1 (next_frame);
   if (this_frame)
     return get_frame_id (skip_artificial_frames (this_frame));
   else
     return null_frame_id;
 }

get_prev_frame_1 is currently static in frame.c.  As a _1 suffix is
not a good name for an extern function, I've renamed it.

Tested on x86-64 Fedora 17.

gdb/
2014-04-18  Pedro alves  <palves@redhat.com>
	    Tom Tromey  <tromey@redhat.com>

	PR backtrace/15558
	* frame.c (get_prev_frame_1): Rename to ...
	(get_prev_frame_always): ... this, and make extern.  Adjust.
	(skip_artificial_frames): Use get_prev_frame_always.
	(frame_unwind_caller_id, frame_pop, get_prev_frame)
	(get_frame_unwind_stop_reason): Adjust to rename.
	* frame.h (get_prev_frame_always): Declare.
	* inline-frame.c: Include frame.h.
	(inline_frame_this_id): Use get_prev_frame_always.

gdb/testsuite/
2014-04-18  Tom Tromey  <palves@redhat.com>
	    Pedro alves  <tromey@redhat.com>

	PR backtrace/15558
	* gdb.opt/inline-bt.exp: Test backtracing from an inline function
	with a backtrace limit.
	* gdb.python/py-frame-inline.exp: Test running to an inline
	function with a backtrace limit, and printing the newest frame.
	* gdb.python/py-frame-inline.c (main): Call f.
 2014-04-18 10:34:09 +01:00