There's code in the MI interpreter that decides whether a stop should
be sent to MI's console stream. Move this check to the CLI
interpreter code, so that we can reuse it in both the CLI and TUI
interpreters.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* cli/cli-interp.c: Include gdbthread.h and thread-fsm.h.
(should_print_stop_to_console): New function, factored out from
mi_on_normal_stop_1.
* cli/cli-interp.h (should_print_stop_to_console): Declare.
* mi/mi-interp.c (mi_on_normal_stop_1): Use
should_print_stop_to_console. Pass it the current UI's console
interpreter.
* mi/mi-main.c (captured_mi_execute_command): Use the
INTERP_CONSOLE symbol rather than explicit "console".
Running mi-break.exp with MI on a secondary UI reveals that MI emits
spurious prompts compared MI running as primary UI:
-exec-continue
^running
*running,thread-id="all"
(gdb)
=breakpoint-modified,bkpt={number="9",type="breakpoint",disp="keep",enabled="y",func="callee2",line="39",script={"set $i=0","while $i<10","print $i","set $i=$i+1","end","continue"}}
~"\n"
~"Breakpoint 9, callee2 (intarg=2, strarg=0x400730 \"A string argument.\") at ...src/gdb/testsuite/gdb.mi/basics.c:39\n"
~"39\t callee3 (strarg);\n"
*stopped,reason="breakpoint-hit",disp="keep",bkptno="9",frame={addr="0x00000000004005dd",func="callee2",...
*running,thread-id="all"
>> (gdb)
=breakpoint-modified,bkpt={number="9",...
~"\n"
~"Breakpoint 9, callee2 (intarg=2, strarg=0x400730 \"A string argument.\") at ...src/gdb/testsuite/gdb.mi/basics.c:39\n"
~"39\t callee3 (strarg);\n"
*stopped,reason="breakpoint-hit",disp="keep",bkptno="9",...
*running,thread-id="all"
~"[Inferior 1 (process 12639) exited normally]\n"
=thread-exited,id="1",group-id="i1"
=thread-group-exited,id="i1",exit-code="0"
*stopped,reason="exited-normally"
FAIL: gdb.mi/mi-break.exp: intermediate stop and continue
FAIL: gdb.mi/mi-break.exp: test hitting breakpoint with commands (timeout)
Note the line marked >> above.
The test sets a breakpoint that runs "continue", a foreground command.
When we get to run the "continue", we've already emitted the *stopped
event on the MI UI, and set its prompt state to PROMPT_NEEDED (this is
done from within normal_stop). Since inferior events are always
handled with the main UI as current UI, breakpoint commands always run
with the main UI as current UI too. This means that the "continue"
ends up always disabling the prompt on the main UI, instead of the UI
that had just been done with synchronous execution.
I think we'll want to extend this with a concept of "set of
threads/inferiors a UI/interpreter is blocked waiting on", but I'm
leaving that for a separate series.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* infcmd.c (prepare_execution_command): Use
all_uis_on_sync_execution_starting.
* infrun.c (all_uis_on_sync_execution_starting): New function.
* infrun.h (all_uis_on_sync_execution_starting): Declare.
When sync_execution (a boolean) is true, it means we're running a
foreground command -- we hide the prompt stop listening to input, give
the inferior the terminal, then go to the event loop waiting for the
target to stop.
With multiple independent UIs, we need to track whether each UI is
synchronously blocked waiting for the target. IOW, if you do
"continue" in one console, that console stops accepting commands, but
you should still be free to type other commands in the others
consoles.
Just simply making sync_execution be per-UI alone not sufficient,
because of this in fetch_inferior_event:
/* If the inferior was in sync execution mode, and now isn't,
restore the prompt (a synchronous execution command has finished,
and we're ready for input). */
if (current_ui->async && was_sync && !sync_execution)
observer_notify_sync_execution_done ();
We'd have to record at entry the "was_sync" state for each UI, not
just of the current UI.
This patch instead replaces the sync_execution flag by a per-UI
tristate flag indicating the command line prompt state:
enum prompt_state
{
/* The command line is blocked simulating synchronous execution.
This is used to implement the foreground execution commands
('run', 'continue', etc.). We won't display the prompt and
accept further commands until the execution is actually over. */
PROMPT_BLOCKED,
/* The command finished; display the prompt before returning back to
the top level. */
PROMPT_NEEDED,
/* We've displayed the prompt already, ready for input. */
PROMPTED,
;
I think the end result is _much_ clearer than the current code, and,
it addresses the original motivation too.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* annotate.c: Include top.h.
(async_background_execution_p): Delete.
(print_value_flags): Check the UI's prompt state rather then
async_background_execution_p.
* event-loop.c (start_event_loop): Set the prompt state to
PROMPT_NEEDED.
* event-top.c (display_gdb_prompt, async_enable_stdin)
(async_disable_stdin): Check the current UI's prompt state instead
of the sync_execution global.
(command_line_handler): Set the prompt state to PROMPT_NEEDED
before running a command, and display the prompt if still needed
afterwards.
* infcall.c (struct call_thread_fsm) <waiting_ui>: New field.
(new_call_thread_fsm): New parameter 'waiting_ui'. Store it.
(call_thread_fsm_should_stop): Set the prompt state to
PROMPT_NEEDED.
(run_inferior_call): Adjust to temporarily set the prompt state to
PROMPT_BLOCKED instead of using the sync_execution global.
(call_function_by_hand_dummy): Pass the current UI to
new_call_thread_fsm.
* infcmd.c: Include top.h.
(continue_1): Check the current UI's prompt state instead of the
sync_execution global.
(continue_command): Validate global execution state before calling
prepare_execution_command.
(step_1): Call all_uis_check_sync_execution_done.
(attach_post_wait): Don't call async_enable_stdin here. Remove
reference to sync_execution.
* infrun.c (sync_execution): Delete global.
(follow_fork_inferior)
(reinstall_readline_callback_handler_cleanup): Check the current
UI's prompt state instead of the sync_execution global.
(check_curr_ui_sync_execution_done)
(all_uis_check_sync_execution_done): New functions.
(fetch_inferior_event): Call all_uis_check_sync_execution_done
instead of trying to determine whether the global sync execution
changed.
(handle_no_resumed): Check the prompt state of all UIs.
(normal_stop): Emit the no unwait-for even to all PROMPT_BLOCKED
UIs. Emit the "Switching to" notification to all UIs. Enable
stdin in all UIs.
* infrun.h (sync_execution): Delete.
(all_uis_check_sync_execution_done): Declare.
* main.c (captured_command_loop): Don't call
interp_pre_command_loop if the prompt is blocked.
(catch_command_errors, catch_command_errors_const): Adjust.
(captured_main): Set the initial prompt state to PROMPT_NEEDED.
* mi/mi-interp.c (display_mi_prompt): Set the prompt state to
PROMPTED.
(mi_interpreter_resume): Don't clear sync_execution. Remove hack
comment.
(mi_execute_command_input_handler): Set the prompt state to
PROMPT_NEEDED before executing the command, and only display the
prompt if the prompt state is PROMPT_NEEDED afterwards.
(mi_on_resume_1): Adjust to check the prompt state.
* target.c (target_terminal_inferior): Adjust to check the prompt
state.
* top.c (wait_sync_command_done, maybe_wait_sync_command_done)
(execute_command): Check the current UI's prompt state instead of
sync_execution.
* top.h (enum prompt_state): New.
(struct ui) <prompt_state>: New field.
(ALL_UIS): New macro.
All interpreter types (CLI/TUI/MI) print the prompt, and then call
start_event_loop.
Because we'll need an interpreter hook to display the
interpreter-specific prompt before going back to the event loop,
without actually starting an event loop, this patch moves the
start_event_loop call to common code, and replaces the command_loop
hook with a pre_command_look hook, that now just prints the prompt.
Turns out to be a cleanup on its own right anyway.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* cli/cli-interp.c (cli_interpreter_pre_command_loop): New
function.
(cli_interp_procs): Install it instead of cli_command_loop.
* cli/cli-interp.h (cli_interpreter_pre_command_loop): Declare.
* event-top.c (cli_command_loop): Delete.
* interps.c (interp_new): Remove reference to command_loop_proc.
(current_interp_command_loop): Delete.
(interp_pre_command_loop): New function.
(interp_command_loop_ftype): Delete.
* interps.h (interp_pre_command_loop_ftype): New typedef.
(struct interp_procs) <command_loop_proc>: Delele field.
<pre_command_loop_proc>: New field.
(current_interp_command_loop): Delete declaration.
(interp_pre_command_loop): New declaration.
* main.c (captured_command_loop): Call interp_pre_command_loop
instead of current_interp_command_loop and start an event loop.
* mi/mi-interp.c (mi_command_loop): Delete.
(mi_interpreter_pre_command_loop): New.
(mi_interp_procs): Update.
* tui/tui-interp.c (tui_interp_procs): Install
cli_interpreter_pre_command_loop instead of cli_command_loop.
Each MI instance should obviously have its own raw output channel,
along with save_raw_stdout.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* interps.c (current_interpreter): New function.
* interps.h (current_interpreter): New declaration.
* mi/mi-cmds.h (raw_stdout): Delete declaration.
* mi/mi-common.h (struct mi_interp) <raw_stdout,
saved_raw_stdout>: New field.
* mi/mi-interp.c (display_mi_prompt): New parameter 'mi'. Adjust
to per-UI raw_stdout.
(mi_interpreter_init): Adjust to per-UI raw_stdout.
(mi_on_sync_execution_done, mi_execute_command_input_handler)
(mi_command_loop): Pass MI instance to display_mi_prompt.
(mi_on_normal_stop_1, mi_output_running_pid, mi_on_resume_1)
(mi_on_resume): Adjust to per-UI raw_stdout.
(saved_raw_stdout): Delete.
(mi_set_logging): Adjust to per-UI raw_stdout and
saved_raw_stdout.
* mi/mi-main.c (raw_stdout): Delete.
(mi_cmd_gdb_exit, captured_mi_execute_command)
(mi_print_exception, mi_load_progress): Adjust to per-UI
raw_stdout.
(print_diff_now, mi_print_timing_maybe): New ui_file parameter.
Pass it along.
(print_diff): New ui_file parameter. Send output there instead of
raw_stdout.
* mi/mi-main.h (struct ui_file): Forward declare.
(mi_print_timing_maybe): Add ui_file parameter.
Since we always run the inferior in the main console (unless "set
inferior-tty" is in effect), when some UI other than the main one
calls target_terminal_inferior/target_terminal_inferior, then we only
register/unregister the UI's input from the event loop, but leave the
main UI's terminal settings as is.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* target.c (target_terminal_inferior): Bail out after
unregistering input_fd if not on the main UI.
(target_terminal_ours): Bail out after registering input_fd if not
on the main UI.
(target_terminal_ours_for_output): Bail out if not on the main UI.
This makes target events always be always processed with the main UI
as current UI. This way, warnings, debug output, etc. are always
consistently sent to the main console.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* event-top.c (restore_ui_cleanup): Make extern.
* infrun.c (fetch_inferior_event): Always switch to the main UI.
* top.h (restore_ui_cleanup): Declare.
Due to the way that readline's API works (based on globals), we can
only have one instance of readline in a process. So the goal of this
patch is to only allow editing in the main UI, and make sure that only
one UI calls into readline. Some MI paths touch readline variables
currently, which is bad as that is changing variables that matter for
the main console UI. This patch fixes those.
This actually fixes a nasty bug -- starting gdb in MI mode ("gdb
-i=mi"), and then doing "set editing on" crashes GDB, because MI is
not prepared to use readline:
set editing on
&"set editing on\n"
=cmd-param-changed,param="editing",value="on"
^done
(gdb)
p 1
readline: readline_callback_read_char() called with no handler!
Aborted (core dumped)
The fix for that was to add an interp_proc method to query the
interpreter whether it actually supports editing. New test included.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
PR mi/20034
* cli/cli-interp.c: Include cli-interp.h and event-top.h.
(cli_interpreter_resume): Pass 1 to gdb_setup_readline. Set the
UI's input_handler here.
(cli_interpreter_supports_command_editing): New function.
(cli_interp_procs): Install it.
* cli/cli-interp.h: New file.
* event-top.c (async_command_editing_p): Rename to ...
(set_editing_cmd_var): ... this.
(change_line_handler): Add parameter 'editing', and use it. Bail
early if the interpreter doesn't support editing. Don't touch
readline state if editing is off.
(gdb_rl_callback_handler_remove, gdb_rl_callback_handler_install)
(gdb_rl_callback_handler_reinstall): Assert the current UI is the
main UI.
(display_gdb_prompt): Don't call gdb_rl_callback_handler_remove if
not using readline. Check whether the current UI is using command
editing instead of checking the async_command_editing_p global.
(set_async_editing_command): Delete.
(gdb_setup_readline): Add 'editing' parameter. Only allow editing
on the main UI. Don't touch readline state if editing is off.
(gdb_disable_readline): Don't touch readline state if editing is
off.
* event-top.h (gdb_setup_readline): Add 'int' parameter.
(set_async_editing_command): Delete declaration.
(change_line_handler, command_line_handler): Declare.
(async_command_editing_p): Rename to ...
(set_editing_cmd_var): ... this.
* infrun.c (reinstall_readline_callback_handler_cleanup): Check
whether the current UI has editing enabled rather than checking
the async_command_editing_p global.
* interps.c (interp_supports_command_editing): New function.
* interps.h (interp_supports_command_editing_ftype): New typedef.
(struct interp_procs) <supports_command_editing_proc>: New field.
(interp_supports_command_editing): Declare.
* mi/mi-interp.c (mi_interpreter_resume): Pass 0 to
gdb_setup_readline. Don't clear the async_command_editing_p
global. Update comments.
* top.c (gdb_readline_wrapper_line, gdb_readline_wrapper): Check
whether the current UI has editing enabled rather than checking
the async_command_editing_p global. Don't touch readline state if
editing is off.
(undo_terminal_modifications_before_exit): Switch to the main UI.
Unconditionally call gdb_disable_readline.
(set_editing): New function.
(show_async_command_editing_p): Rename to ...
(show_editing): ... this. Show the state of the current UI.
(_initialize_top): Adjust.
* top.h (struct ui) <command_editing>: New field.
* tui/tui-interp.c: Include cli/cli-interp.h.
(tui_resume): Pass 1 to gdb_setup_readline. Set the UI's
input_handler.
(tui_interp_procs): Install
cli_interpreter_supports_command_editing.
* tui/tui-io.c (tui_getc): Check whether the current UI has
editing enabled rather than checking the async_command_editing_p
global.
gdb/testsuite/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
PR mi/20034
* gdb.mi/mi-editing.exp: New file.
Currently, current_uiout starts out pointing to def_uiout, a dummy
ui_out implementation.
Since we create a replacement uiout early on as soon as we create the
interpreter, we never actually use def_uiout. So this patch removes
it.
The proof that it works is that starting with current_uiout set to
NULL does not crash.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* ui-out.c (default_ui_out_impl): Delete.
(def_uiout): Delete.
(current_uiout): Set to NULL.
(default_table_begin, default_table_body, default_table_end)
(default_table_header, default_begin, default_end)
(default_field_int, default_field_skip, default_field_string)
(default_field_fmt, default_spaces, default_text, default_message)
(default_wrap_hint, default_flush, default_data_destroy): Delete.
stderr_fileopen () references stderr directly, which doesn't work when
we have a separate UI with its own stderr-like stream. So this also
adds a "errstream" to "struct ui", and plumbs stderr_fileopen to take
a stream parameter.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* event-top.c (gdb_setup_readline): Pass the UI's outstream and
errstream to stdout_fileopen and stderr_fileopen.
* exceptions.c: Include top.h.
(print_flush): Open the current UI's outstream file descriptor,
instead of hardcoding file descriptor 1.
* main.c (captured_main): Save the main UI's out and error
streams. Adjust stderr_fileopen call.
* top.h (struct ui) <outstream, errstream>: New fields.
* ui-file.c (stderr_fileopen): Add stream parameter. Use it
instead of stderr.
* ui-file.h (stderr_fileopen): Add stream parameter and update
comment.
And with that, we can switch the current UI to the UI whose input
descriptor woke up the event loop. IOW, if the user types in UI 2,
the event loop wakes up, switches to UI 2, and processes the input.
Next the user types in UI 3, the event loop wakes up and switches to
UI 3, etc.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* event-top.c (input_fd): Delete.
(stdin_event_handler): Switch to the UI whose input descriptor got
the event. Adjust to per-UI input_fd.
(gdb_setup_readline): Don't set the input_fd global. Adjust to
per-UI input_fd.
(gdb_disable_readline): Adjust to per-UI input_fd.
* event-top.h (input_fd): Delete declaration.
* linux-nat.c (linux_nat_terminal_inferior): Don't remove input_fd
from the event-loop here.
(linux_nat_terminal_ours): Don't register input_fd in the
event-loop here.
* main.c (captured_main): Adjust to per-UI input_fd.
* remote.c (remote_terminal_inferior): Don't remove input_fd from
the event-loop here.
(remote_terminal_ours): Don't register input_fd in the event-loop
here.
* target.c: Include top.h and event-top.h.
(target_terminal_inferior): Remove input_fd from the event-loop
here.
(target_terminal_ours): Register input_fd in the event-loop.
* top.h (struct ui) <input_fd>: New field.
Async signal handlers have no connection to whichever was the current
UI, and thus always run on the main one.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* event-loop.c: Include top.h.
(invoke_async_signal_handlers): Switch to the main UI.
* event-top.c (main_ui_): Update comment.
(main_ui): New global.
* top.h (main_ui): Declare.
When we have multiple consoles, MI channels, etc., then we need to
broadcast breakpoint hits, etc. to all UIs. In the past, I've
adjusted most of the run control to communicate events to the
interpreters through observer notifications, so events would be
properly sent to console and MI streams, in sync and async modes.
This patch does the next logical step -- have each interpreter's
observers output interpreter-specific info to _all_ UIs.
Note that when we have multiple instances of active cli/tui
interpreters, then the cli_interp and tui_interp globals no longer
work. This is addressed by this patch.
Also, the interpreters currently register some observers when resumed
and remove them when suspended. If we have multiple instances of the
interpreters, and they can be suspended/resumed at different,
independent times, that no longer works. What we instead do is always
install the observers, and then have the observers themselves know
when to do nothing.
An earlier prototype of this series did the looping over struct UIs in
common code, and then dispatched events to the interpreters through a
matching interp_on_foo method for each observer. That turned out a
lot more complicated than the present solution, as we'd end up with
having to create a new interp method every time some interpreter
wanted to listen to some observer notification, resulting in a lot of
duplicated make-work and more coupling than desirable.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* cli/cli-interp.c (cli_interp): Delete.
(as_cli_interp): New function.
(cli_on_normal_stop, cli_on_signal_received)
(cli_on_end_stepping_range, cli_on_signal_exited, cli_on_exited)
(cli_on_no_history): Send output to all CLI UIs.
(cli_on_sync_execution_done, cli_on_command_error): Skip output if
the top level interpreter is not a CLI.
(cli_interpreter_init): Don't set cli_interp or install observers
here.
(_initialize_cli_interp): Install observers here.
* event-top.c (main_ui_, ui_list): New globals.
(current_ui): Point to main_ui_.
(restore_ui_cleanup, switch_thru_all_uis_init)
(switch_thru_all_uis_cond, switch_thru_all_uis_next): New
functions.
* mi/mi-interp.c (as_mi_interp): New function.
(mi_interpreter_init): Don't install observers here.
(mi_on_sync_execution_done): Skip output if the top level
interpreter is not a MI.
(mi_new_thread, mi_thread_exit, mi_record_changed)
(mi_inferior_added, mi_inferior_appeared, mi_inferior_exit)
(mi_inferior_removed): Send output to all MI UIs.
(find_mi_interpreter, mi_interp_data): Delete.
(find_mi_interp): New function.
(mi_on_signal_received, mi_on_end_stepping_range)
(mi_on_signal_exited, mi_on_exited, mi_on_no_history): Send output
to all MI UIs.
(mi_on_normal_stop): Rename to ...
(mi_on_normal_stop_1): ... this.
(mi_on_normal_stop): Reimplement, sending output to all MI UIs.
(mi_traceframe_changed, mi_tsv_created, mi_tsv_deleted)
(mi_tsv_modified, mi_breakpoint_created, mi_breakpoint_deleted)
(mi_breakpoint_modified, mi_output_running_pid): Send output to
all MI UIs.
(mi_on_resume): Rename to ...
(mi_on_resume_1): ... this. Don't handle infcalls here.
(mi_on_resume): Reimplement, sending output to all MI UIs.
(mi_solib_loaded, mi_solib_unloaded, mi_command_param_changed)
(mi_memory_changed): Send output to all MI UIs.
(report_initial_inferior): Install observers here.
* top.h (struct ui) <next>: New field.
(ui_list): Declare.
(struct switch_thru_all_uis): New.
(switch_thru_all_uis_init, switch_thru_all_uis_cond)
(switch_thru_all_uis_next): Declare.
(SWITCH_THRU_ALL_UIS): New macro.
* tui/tui-interp.c (tui_interp): Delete global.
(as_tui_interp): New function.
(tui_on_normal_stop, tui_on_signal_received)
(tui_on_end_stepping_range, tui_on_signal_exited, tui_on_exited)
(tui_on_no_history): Send output to all TUI UIs.
(tui_on_sync_execution_done, tui_on_command_error): Skip output if
the top level interpreter is not a TUI.
(tui_init): Don't set tui_interp or install observers here.
(_initialize_tui_interp): Install observers here.
If every UI instance has its own set of interpreters, then the current
scheme of creating the interpreters at GDB initialization time no
longer works. We need to create them whenever a new UI instance is
created.
The scheme implemented here has each interpreter register a factory
callback that when called creates a new instance of a specific
interpreter type. Then, when some code in gdb looks up an interpreter
(always by name), if there's none yet, the factory method is called to
construct one.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* cli/cli-interp.c (cli_uiout): Delete, moved into ...
(struct cli_interp): ... this new structure.
(cli_on_normal_stop, cli_on_signal_received)
(cli_on_end_stepping_range, cli_on_signal_exited, cli_on_exited)
(cli_on_no_history): Use interp_ui_out.
(cli_interpreter_init): If top level, set the cli_interp global.
(cli_interpreter_init): Return the interp's data instead of NULL.
(cli_interpreter_resume, cli_interpreter_exec, cli_ui_out): Adjust
to cli_uiout being in the interpreter's data.
(cli_interp_procs): New, factored out from _initialize_cli_interp.
(cli_interp_factory): New function.
(_initialize_cli_interp): Call interp_factory_register.
* interps.c (get_interp_info): New, factored out from ...
(get_current_interp_info): ... this.
(interp_new): Add parameter 'data'. Store it.
(struct interp_factory): New function.
(interp_factory_p): New typedef. Define a VEC_P.
(interpreter_factories): New global.
(interp_factory_register): New function.
(interp_add): Add 'ui' parameter. Use get_interp_info and
interp_lookup_existing.
(interp_lookup): Rename to ...
(interp_lookup_existing): ... this. Add 'ui' parameter. Don't
check for NULL or empty name here.
(interp_lookup): Add 'ui' parameter and reimplement.
(interp_set_temp, interpreter_exec_cmd): Adjust.
(interpreter_completer): Complete on registered interpreter
factories instead of interpreters.
* interps.h (interp_factory_func): New typedef.
(interp_factory_register): Declare.
(interp_new, interp_add): Adjust.
(interp_lookup): Declare.
* main.c (captured_main): Adjust.
* mi/mi-interp.c (mi_cmd_interpreter_exec): Adjust.
(mi_interp_procs): New, factored out from
_initialize_mi_interp.
(mi_interp_factory): New function.
* python/python.c (execute_gdb_command): Adjust.
* tui/tui-interp.c (tui_init): If top level, set the tui_interp
global.
(tui_interp_procs): New.
(tui_interp_factory): New function.
(_initialize_tui_interp): Call interp_factory_register.
Make each UI have its own interpreter list, top level interpreter,
current interpreter, etc. The "interpreter_async" global is not
really specific to an struct interp (it crosses interpreter-exec ...),
so I moved it to "struct ui" directly, while the other globals were
left hidden in interps.c, opaque to the rest of GDB.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* breakpoint.c (bpstat_do_actions_1): Access the current UI's
async field instead of the interpreter_async global.
* cli/cli-script.c (execute_user_command, while_command)
(if_command, script_from_file): Likewise.
* compile/compile.c: Include top.h instead of interps.h.
(compile_file_command, compile_code_command)
(compile_print_command): Access the current UI's async field
instead of the interpreter_async global.
* guile/guile.c: Include top.h instead of interps.h.
(guile_repl_command, guile_command, gdbscm_execute_gdb_command):
Access the current UI's async field instead of the
interpreter_async global.
* guile/scm-ports.c: Include top.h instead of interps.h.
(ioscm_with_output_to_port_worker): Access the current UI's async
field instead of the interpreter_async global.
* inf-loop.c (inferior_event_handler): Likewise.
* infcall.c (run_inferior_call): Likewise.
* infrun.c (reinstall_readline_callback_handler_cleanup)
(fetch_inferior_event): Likewise.
* interps.c (interpreter_async): Delete.
(struct ui_interp_info): New.
(get_current_interp_info): New function.
(interp_list, current_interpreter, top_level_interpreter_ptr):
Delete.
(interp_add, interp_set, interp_lookup, interp_ui_out)
(current_interp_set_logging, interp_set_temp)
(current_interp_named_p): Adjust to per-UI interpreters.
(command_interpreter): Delete.
(command_interp, current_interp_command_loop, interp_quiet_p)
(interp_exec, interpreter_exec_cmd, interpreter_completer)
(top_level_interpreter, top_level_interpreter_data): Adjust to
per-UI interpreters.
* interps.h (interpreter_async): Delete.
* main.c (captured_command_loop): Access the current UI's async
field instead of the interpreter_async global.
* python/python.c (python_interactive_command, python_command)
(execute_gdb_command): Likewise.
* top.c (maybe_wait_sync_command_done, execute_command_to_string):
Access the current UI's async field instead of the
interpreter_async global.
* top.h (struct tl_interp_info): Forward declare.
(struct ui) <interp_info, async>: New fields.
We need to have these send output to the proper UI.
However, this patch still make them look like globals. Kind of like
__thread variables, if you will. Changing everything throughout to
write something like current_ui->gdb_stdout instead would be massive
overkill, IMNSHO.
This leaves gdb_stdtargin/stdtarg/stdtargerr global, but maybe that was a
mistake, I'm not sure -- IIRC, MI formats target I/O differently, so
if we have a separate MI channel, then I guess target output should go
there instead of to gdb's stdout. OTOH, maybe GDB should send that
instead to "set inferior-tty", instead of multiplexing it over MI. We
can always fix those later when it gets clearer where they should go.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* main.c (gdb_stdout, gdb_stderr, gdb_stdlog, gdb_stdin): Delete
globals.
(gen_ret_current_ui_field_ptr): New macro. Use it to generate
wrappers for gdb_stdout, gdb_stderr, gdb_stdlog and gdb_stdin.
* top.h (struct ui) <m_gdb_stdout, m_gdb_stdin, m_gdb_stderr,
m_gdb_stdlog>: New fields.
(current_ui_gdb_stdout_ptr, current_ui_gdb_stdin_ptr)
(current_ui_gdb_stderr_ptr, current_ui_gdb_stdlog_ptr): Declare.
(gdb_stdout, gdb_stdin, gdb_stderr, gdb_stdlog): Reimplement as
macros.
This is a step towards supporting multiple consoles/MIs, each on its
own stdio streams / terminal.
See intro comment in top.h.
(I've had trouble picking a name for this object. I've started out
with "struct console" originally. But then this is about MI as well,
and there's "interpreter-exec console", which is specifically about
the CLI...
So I changed to "struct terminal", but, then we have a terminal object
that works when the input is not a terminal as well ...
Then I sort of gave up and renamed it to "struct top_level". But it
then gets horribly confusing when we talk about the "top level
interpreter that's running on the current top level".
In the end, I realized we're already sort of calling this "ui", in
struct ui_out, struct ui_file, and a few coments here and there.)
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* event-top.c: Update readline-related comments.
(input_handler, call_readline): Delete globals.
(gdb_rl_callback_handler): Call the current UI's input_handler
method.
(change_line_handler): Adjust to set current UI's properties
instead of globals.
(current_ui_, current_ui): New globals.
(get_command_line_buffer): Rewrite to refer to the current UI.
(stdin_event_handler): Adjust to call the call_readline method of
the current UI.
(gdb_readline_no_editing_callback): Adjust to call the current UI's
input_handler method.
(gdb_setup_readline): Adjust to set current UI's properties
instead of globals.
* event-top.h (call_readline, input_handler): Delete declarations.
* mi/mi-interp.c (mi_interpreter_resume): Adjust to set current
UI's properties instead of globals.
* top.c (gdb_readline_wrapper_cleanup): Adjust to set current UI's
properties instead of globals.
(gdb_readline_wrapper): Adjust to call and set current UI's
methods instead of globals.
* top.h: Include buffer.h and event-loop.h.
(struct ui): New struct.
(current_ui): New declaration.
Looking at testsuite results, I noticed this warning in an MI test:
~"\nCatchpoint "
~"2, "
&"warning: failed to get exception name: No definition of \"e.full_name\" in current context.\n"
~"exception at 0x000000000040192d in foo () at /home/pedro/brno/pedro/gdb/mygit/src/gdb/testsuite/gdb.ada/mi_catch_ex/foo.adb:20\n"
~"20\t raise Constraint_Error; -- SPOT1\n"
*stopped,reason="breakpoint-hit",disp="keep",bkptno="2",exception-name="CONSTRAINT_ERROR",frame={addr="0x000000000040192d",func="foo",args=[],file="/home/pedro/brno/pedro/gdb/mygit/src/gdb/testsuite/gdb.ada/mi_catch_ex/foo.adb",fullname="/home/pedro/brno/pedro/gdb/mygit/src/gdb/testsuite/gdb.ada/mi_catch_ex/foo.adb",line="20"},thread-id="1",stopped-threads="all",core="5"
(gdb)
PASS: gdb.ada/mi_catch_ex.exp: continue until CE caught by all-exceptions catchpoint
The problem is that:
- MI prints the breakpoint hit twice: once on the MI stream;
another time on the console stream.
- After printing the Ada catchpoint hit, gdb selects a non-current
frame, from within the catchpoint's print_it routine.
So the second time the breakpoint is printed, the selected frame is no
longer the current frame, and then evaluating e.full_name in
ada_exception_name_addr fails.
This commit fixes the problem and enhances the gdb.ada/mi_catch_ex.exp
test to make sure the catchpoint hit is printed correctly on the
console stream too.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* ada-lang.c (ada_exception_name_addr_1): Add comment.
(print_it_exception): Select the current frame.
gdb/testsuite/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* gdb.ada/mi_catch_ex.exp (continue_to_exception): New procedure.
(top level): Use it instead of mi_execute_to.
Similarly to 5068630ad3
(gdb.python/py-events.exp and normal_stop observers ordering) [1],
this commit makes the gdb.python/py-mi-events.exp test not rely on
order in which MI and Python observers run, or even on where each
observer sends its output to.
This shows up as a problem when testing with MI running as a separate
terminal, for example, where Python event output and MI output go to
different channels, even. But in any case, relying on the order in
which observers run is always going to be fragile.
The fix is to save the string output in the handlers in some variables
and then having MI print them explicitly, instead of printing them
directly from the Python events.
Tested on x86_64 Fedora 23.
https://sourceware.org/ml/gdb-patches/2015-07/msg00290.html
gdb/testsuite/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* gdb.python/py-mi-events-gdb.py (stop_handler_str)
(cont_handler_str): New.
(signal_stop_handler): Set stop_handler_str instead of printing to
stdout.
(continue_handler): Set cont_handler_str instead of printing to
stdout.
* gdb.python/py-mi-events.exp: Ues mi_execute_to instead of
mi_send_resuming_command. Print stop_handler_str and
cont_handler_str instead of expecting the python events print
directly.
Complement commit 44d3da2338 ("MIPS/GAS: Treat local jump relocs the
same no matter if REL or RELA") and update and clarify the comment on
jump reloc conversion.
gas/
* config/tc-mips.c (mips_fix_adjustable): Update comment on jump
reloc conversion.
If there is no PLT in output, return 0 for first_plt_entry_offset and
plt_entry_size.
PR gold/20245
* i386.cc (Target_i386::first_plt_entry_offset): Return 0 if
plt_ is NULL.
(Target_i386::plt_entry_size): Likewise.
(Target_x86_64<size>::first_plt_entry_offset): Likewise.
(Target_x86_64<size>::plt_entry_size): Likewise.
Includes DT_MIPS_RLD_MAP and DT_MIPS_RLD_MAP_REL dynamic tags and
__RLD_MAP symbol.
2016-06-20 Vladimir Radosavljevic <Vladimir.Radosavljevic@imgtec.com>
elfcpp/
* elfcpp.h (DT_MIPS_RLD_MAP_REL): New enum constant.
gold/
* mips.cc (Target_mips::Target_mips): Initialize rld_map_.
(Target_mips::rld_map_): New data member.
(Target_mips::do_finalize_sections): Add support for
DT_MIPS_RLD_MAP and DT_MIPS_RLD_MAP_REL dynamic tags,
.rld_map section, and __RLD_MAP symbol.
(Target_mips::do_dynamic_tag_custom_value): Add support for
DT_MIPS_RLD_MAP_REL dynamic tag.
* output.cc (Output_data_dynamic::get_entry_offset): New method
definition.
* output.h (Output_data_dynamic::get_entry_offset): New method
declaration.
elfcpp/
* mips.h (R_MIPS_PC21_S2, R_MIPS_PC26_S2, R_MIPS_PC18_S3,
R_MIPS_PC19_S2, R_MIPS_PCHI16, R_MIPS_PCLO16): New enums for
Mips32r6 and Mips64r6 relocations.
(r6_isa): New function.
gold/
* mips.cc (relocation_needs_la25_stub): Add support for relocs:
R_MIPS_PC21_S2 and R_MIPS_PC26_S2.
(hi16_reloc): Add support for R_MIPS_PCHI16 relocation.
(is_matching_lo16_reloc): Likewise.
(lo16_reloc): Add support for R_MIPS_PCLO16 relocation.
(Mips_output_data_plt::plt_entry_r6): New static data member for
R6 PLT entry.
(Target_mips::is_output_r6): New method.
(Target_mips::Mips_mach): Add new enum constants.
(Mips_relocate_functions::Status): Likewise.
(Mips_relocate_functions::pchi16_relocs): New static data member.
(Mips_relocate_functions::relpc21): New method.
(Mips_relocate_functions::relpc26): Likewise.
(Mips_relocate_functions::relpc18): Likewise.
(Mips_relocate_functions::relpc19): Likewise.
(Mips_relocate_functions::relpchi16): Likewise.
(Mips_relocate_functions::do_relpchi16): Likewise.
(Mips_relocate_functions::relpclo16): Likewise.
(Mips_output_data_plt::do_write): Add support for Mips r6 plt
entry.
(Target_mips::mips_32bit_flags): Add E_MIPS_ARCH_32R6 support.
(Target_mips::elf_mips_mach): Add E_MIPS_ARCH_32R6 and
E_MIPS_ARCH_64R6 support.
(Target_mips::update_abiflags_isa): Likewise.
(mips_get_size_for_reloc): Add support for relocs: R_MIPS_PCHI16,
R_MIPS_PCLO16, R_MIPS_PC21_S2, R_MIPS_PC26_S2, R_MIPS_PC18_S3 and
R_MIPS_PC19_S2.
(Target_mips::Scan::local): Add support for relocs: R_MIPS_PCHI16
and R_MIPS_PCLO16.
(Target_mips::Scan::global): Add support for relocs:
R_MIPS_PC21_S2 and R_MIPS_PC26_S2.
(Target_mips::Relocate::relocate): Call functions for resolving
Mips32r6 and Mips64r6 relocations, and print error message for
STATUS_PCREL_UNALIGNED.
(Target_mips::Scan::get_reference_flags): Add support for relocs:
R_MIPS_PCHI16, R_MIPS_PCLO16, R_MIPS_PC21_S2, R_MIPS_PC26_S2,
R_MIPS_PC18_S3 and R_MIPS_PC19_S2.
(Target_mips::elf_mips_mach_name): Add E_MIPS_ARCH_32R6 and
E_MIPS_ARCH_64R6 support.
ELF linker shouldn't skip the IR object when searching the symbol table
of an archive element. If linker doesn't know if the object file is an
IR object, it should give LTO plugin a chance to get the correct symbol
table and use the IR symbol table if the input is an IR object.
bfd/
PR ld/18250
PR ld/20267
* elflink.c: Include plugin.h if BFD_SUPPORTS_PLUGINS is
defined.
(elf_link_is_defined_archive_symbol): Call
bfd_link_plugin_object_p on unknown plugin object and use the
IR symbol table if the input is an IR object.
* plugin.c (bfd_link_plugin_object_p): New function.
* plugin.h (bfd_link_plugin_object_p): New prototype.
ld/
PR ld/20267
* testsuite/ld-plugin/lto.exp (lto_link_tests): Add test for
PR ld/20267.
(lto_run_tests): Likewise.
* testsuite/ld-plugin/pr20267a.c: New file.
* testsuite/ld-plugin/pr20267b.c: Likewise.
Also, don't check alignment on symbol from plugin dummy input.
bfd/
PR ld/20276
* elflink.c (elf_link_add_object_symbols): Don't check alignment
on symbol from plugin dummy input.
ld/
PR ld/20276
* plugin.c (plugin_notice): Set non_ir_ref on common symbols.
* testsuite/ld-plugin/lto.exp (lto_link_tests): Add test for
PR ld/20276.
(lto_run_tests): Likewise.
* testsuite/ld-plugin/pass.out: New file.
* testsuite/ld-plugin/pr20276a.c: Likewise.
* testsuite/ld-plugin/pr20276b.c: Likewise.
Originally intended to be committed on 2013-01-17 in
675921c059 (Test case for the
jit-reader), but by mistake the files were not added. Fortunately
they still work.
gdb/testsuite/ChangeLog:
2016-06-17 Sanjoy Das <sanjoy@playingwithpointers.com>
* gdb.base/jit-reader.exp: New file.
* gdb.base/jithost.c: New file.
* gdb.base/jithost.h: New file.
* gdb.base/jitreader.c : New file.
* gdb.base/jit-protocol.h: New file.
2016-06-17 Thomas Preud'homme <thomas.preudhomme@arm.com>
Tony Wang <tony.wang@arm.com>
bfd/
* elf32-arm.c (elf32_arm_stub_long_branch_thumb2_only): Define stub
sequence.
(stub_long_branch_thumb2_only): Define stub.
(arm_stub_is_thumb): Add case for arm_stub_long_branch_thumb2_only.
(arm_stub_long_branch_thumb2_only): Likewise.
(arm_type_of_stub): Use arm_stub_long_branch_thumb2_only for Thumb-2
capable targets.
ld/
* testsuite/ld-arm/arm-elf.exp (Thumb-Thumb farcall M profile):
Assemble for ARMv6-M.
(Thumb2-Thumb2 farcall M profile): New testcase.
* testsuite/ld-arm/farcall-thumb2-thumb2-m.d: New file.
* testsuite/ld-arm/jump-reloc-veneers-cond-long-backward.d: Update to
reflect the use of Thumb-2 veneers for Thumb-2 capable targets.
* testsuite/ld-arm/jump-reloc-veneers-cond-long.d: Likewise.
This patch extends step-over-syscall.exp by setting different values to
detach-on-fork and follow-fork.
gdb/testsuite:
2016-06-17 Yao Qi <yao.qi@linaro.org>
* gdb.base/step-over-syscall.exp (break_cond_on_syscall): New
parameters follow_fork and detach_on_fork. Set follow-fork-mode
and detach-on-fork. Adjust tests.
(top level): Invoke break_cond_on_syscall with combinations of
syscall, follow-fork-mode and detach-on-fork.
When a thread is doing step-over with reinsert breakpoint, and the
instruction executed is a syscall doing vfork, both parent and child
share the memory, so the reinsert breakpoint in the space is visible
to both of them. Also, removing the reinsert breakpoints from the
child will effectively remove them from the parent. We should
carefully manipulate reinsert breakpoints for both processes.
What we are doing here is that
- uninsert reinsert breakpoints from the parent before cloning the
breakpoint list. We use "uninsert" instead of "remove", because
we need to "reinsert" them back after vfork is done. In fact,
"uninsert" removes them from both child and parent process space.
- reinsert breakpoints in parent process are still copied to child's
breakpoint list,
- remove them from child's breakpoint list as what we did for fork,
at this point, reinsert breakpoints are removed from the child and
the parent, but they are still tracked by the parent's breakpoint
list,
- once vfork is done, "reinsert" them back to the parent,
gdb/gdbserver:
2016-06-17 Yao Qi <yao.qi@linaro.org>
* linux-low.c (handle_extended_wait): Call
uninsert_reinsert_breakpoints for the parent process. Remove
reinsert breakpoints from the child process. Reinsert them to
the parent process when vfork is done.
* mem-break.c (uninsert_reinsert_breakpoints): New function.
(reinsert_reinsert_breakpoints): New function.
* mem-break.h (uninsert_reinsert_breakpoints): Declare
(reinsert_reinsert_breakpoints): Declare.
When a thread is stepping over a syscall instruction with software
single step, GDBserver inserts reinsert breakpoints at the next pcs.
If the syscall call is fork, the forked child has reinsert breakpoint
in its space, and GDBserver clones parent's breakpoint list to child's.
When GDBserver resumes the child, its bp_reinsert is zero, but has
reinsert breakpoints, so the following assert is triggered if I apply
the patch extending step-over-syscall.exp.
gdb/gdbserver/linux-low.c:4292: A problem internal to GDBserver has been detected.^M
void linux_resume_one_lwp_throw(lwp_info*, int, int, siginfo_t*): Assertion `!has_reinsert_breakpoints (proc)' failed.
gdb/gdbserver:
2016-06-17 Yao Qi <yao.qi@linaro.org>
* linux-low.c (handle_extended_wait): If the parent is doing
step-over, remove the reinsert breakpoints from the forked child.
This patch fixes a GDBserver crash when one thread is stepping over
a syscall instruction which is exit. Step-over isn't finished due
to the exit, but GDBserver doesn't clean up the state of step-over,
so in the wait next time, GDBserver will wait on step_over_bkpt,
which is already exited, and GDBserver crashes because
'requested_child' is NULL. See gdbserver logs below,
Need step over [LWP 14858]? yes, found breakpoint at 0x2aaaaad91307^M
proceed_all_lwps: found thread 14858 needing a step-over^M
Starting step-over on LWP 14858. Stopping all threads^M
>>>> entering void stop_all_lwps(int, lwp_info*)
....
<<<< exiting void stop_all_lwps(int, lwp_info*)^M
Done stopping all threads for step-over.^M
pc is 0x2aaaaad91307^M
Writing 0f to 0x2aaaaad91307 in process 14858^M
Could not find fast tracepoint jump at 0x2aaaaad91307 in list (uninserting).^M
pending reinsert at 0x2aaaaad91307^M
step from pc 0x2aaaaad91307^M
Resuming lwp 14858 (step, signal 0, stop not expected)^M
# Start step-over for LWP 14858
>>>> entering ptid_t linux_wait_1(ptid_t, target_waitstatus*, int)
....
LLFE: 14858 exited.
...
<<<< exiting ptid_t linux_wait_1(ptid_t, target_waitstatus*, int)
# LWP 14858 exited
.....
>>>> entering ptid_t linux_wait_1(ptid_t, target_waitstatus*, int)^M
linux_wait_1: [<all threads>]^M
step_over_bkpt set [LWP 14858.14858], doing a blocking wait
# but step_over_bkpt is still LWP 14858, which is wrong
The fix is to finish step-over if it is ongoing, and unsuspend other
threads. Without the fix in linux-low.c, GDBserver will crash in
with running gdb.base/step-over-exit.exp.
gdb/gdbserver:
2016-06-17 Yao Qi <yao.qi@linaro.org>
* linux-low.c (unsuspend_all_lwps): Declare.
(linux_low_filter_event): If thread exited, call finish_step_over.
If step-over is finished, unsuspend other threads.
gdb/testsuite:
2016-06-17 Yao Qi <yao.qi@linaro.org>
* gdb.base/step-over-exit.c: New.
* gdb.base/step-over-exit.exp: New.
This patch adds more asserts, so the incorrect or sub-optimal
reinsert breakpoints manipulations (from the tests in the following
patches) can trigger them.
gdb/gdbserver:
2016-06-17 Yao Qi <yao.qi@linaro.org>
* linux-low.c (linux_resume_one_lwp_throw): Assert
has_reinsert_breakpoints returns false.
* mem-break.c (delete_disabled_breakpoints): Assert
bp type isn't reinsert_breakpoint.
This patch adds some sanity check that reinsert breakpoints must be
there when doing step-over on software single step target. The check
triggers an assert when running forking-threads-plus-breakpoint.exp
on arm-linux target,
gdb/gdbserver/linux-low.c:4714: A problem internal to GDBserver has been detected.^M
int finish_step_over(lwp_info*): Assertion `has_reinsert_breakpoints ()' failed.
the error happens when GDBserver has already resumed a thread of
process A for step-over (and wait for it hitting reinsert breakpoint),
but receives detach request for process B from GDB, which is shown in
the backtrace below,
(gdb) bt
#2 0x000228aa in finish_step_over (lwp=0x12bbd98) at /home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/linux-low.c:4703
#3 0x00025a50 in finish_step_over (lwp=0x12bbd98) at /home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/linux-low.c:4749
#4 complete_ongoing_step_over () at /home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/linux-low.c:4760
#5 linux_detach (pid=25228) at /home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/linux-low.c:1503
#6 0x00012bae in process_serial_event () at /home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/server.c:3974
#7 handle_serial_event (err=<optimized out>, client_data=<optimized out>) at /home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/server.c:4347
#8 0x00016d68 in handle_file_event (event_file_desc=<optimized out>) at /home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/event-loop.c:429
#9 0x000173ea in process_event () at /home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/event-loop.c:184
#10 start_event_loop () at /home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/event-loop.c:547
#11 0x0000aa2c in captured_main (argv=<optimized out>, argc=<optimized out>) at /home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/server.c:3719
#12 main (argc=<optimized out>, argv=<optimized out>) at /home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/server.c:3804
the sanity check tries to find the reinsert breakpoint from process B,
but nothing is found. It is wrong, we need to search in process A,
since we started step-over of a thread of process A.
(gdb) p lwp->thread->entry.id
$3 = {pid = 25120, lwp = 25131, tid = 0}
(gdb) p current_thread->entry.id
$4 = {pid = 25228, lwp = 25228, tid = 0}
This patch switched current_thread to the thread we are doing step-over
in finish_step_over.
gdb/gdbserver:
2016-06-17 Yao Qi <yao.qi@linaro.org>
* linux-low.c (maybe_hw_step): New function.
(linux_resume_one_lwp_throw): Call maybe_hw_step.
(finish_step_over): Switch current_thread to lwp temporarily,
and assert has_reinsert_breakpoints returns true.
(proceed_one_lwp): Call maybe_hw_step.
* mem-break.c (has_reinsert_breakpoints): New function.
* mem-break.h (has_reinsert_breakpoints): Declare.
This patch fixes and expands the definition of the read/write
instructions for ancillary-state, privileged and hyperprivileged
registers in opcodes.
It also adds support for three new v9m hyperprivileged registers:
%hmcdper, %hmcddfr and %hva_mask_nz.
Finally, the patch expands existing tests (and adds several new ones) in
order to cover all the read/write instructions in all its variants.
opcodes/ChangeLog:
2016-06-17 Jose E. Marchesi <jose.marchesi@oracle.com>
* sparc-opc.c (rdasr): New macro.
(wrasr): Likewise.
(rdpr): Likewise.
(wrpr): Likewise.
(rdhpr): Likewise.
(wrhpr): Likewise.
(sparc_opcodes): Use the macros above to fix and expand the
definition of read/write instructions from/to
asr/privileged/hyperprivileged instructions.
* sparc-dis.c (v9_hpriv_reg_names): Add %hmcdper, %hmcddfr and
%hva_mask_nz. Prefer softint_set and softint_clear over
set_softint and clear_softint.
(print_insn_sparc): Support %ver in Rd.
gas/ChangeLog:
2016-06-17 Jose E. Marchesi <jose.marchesi@oracle.com>
* config/tc-sparc.c (hpriv_reg_table): Add registers %hmcdper,
%hmcddfr and %hva_mask_nz.
(sparc_ip): New handling of asr/privileged/hyperprivileged
registers, adapted to the new form of the sparc opcodes table.
* testsuite/gas/sparc/rdasr.s: New file.
* testsuite/gas/sparc/rdasr.d: Likewise.
* testsuite/gas/sparc/wrasr.s: Likewise.
* testsuite/gas/sparc/wrasr.d: Likewise.
* testsuite/gas/sparc/sparc.exp (sparc_elf_setup): Add rdasr and
wrasr tests.
* testsuite/gas/sparc/rdpr.d: Use -Av9m, as some privileged
registers require it.
* testsuite/gas/sparc/wrpr.s: Complete to cover all privileged
registers and write instruction modalities.
* testsuite/gas/sparc/wrpr.d: Likewise.
* testsuite/gas/sparc/rdhpr.s: Likewise for hyperprivileged
registers.
* testsuite/gas/sparc/rdhpr.d: Likewise.
* testsuite/gas/sparc/wrhpr.s: Likewise.
* testsuite/gas/sparc/wrhpr.d: Likewise.
This patch marks the SPARC instructions in the opcodes table with their
proper opcode architectures, and makes the assembler aware of them.
This allows the assembler to properly realize when a new instruction
needs a higher architecture (after v9b) and to react accordingly
emitting an error message or bumping the architecture.
It also expands architecture mismatch tests to cover architectures
higher than v9b, and fixes a couple of minor bugs in the GAS testsuite.
opcodes/ChangeLog:
2016-06-17 Jose E. Marchesi <jose.marchesi@oracle.com>
* sparc-opc.c (sparc_opcodes): Adjust instructions opcode
architecture according to the hardware capabilities they require.
(sparc_priv_regs): New table.
(sparc_hpriv_regs): Likewise.
(sparc_asr_regs): Likewise.
(v9anotv9m): Define.
gas/ChangeLog:
2016-06-17 Jose E. Marchesi <jose.marchesi@oracle.com>
* config/tc-sparc.c (sparc_arch_table): adjust the GAS
architectures to use the right opcode architecture.
(sparc_md_end): Handle v9{c,d,e,v,m}.
(sparc_ip): Fix some comments.
* testsuite/gas/sparc/ldx_efsr.d: Fix the architecture of this
instruction, which is v9d.
* testsuite/gas/sparc/mwait.s: Remove the `rd %mwait,%g1'
instruction from the test, as %mwait is not readable.
* testsuite/gas/sparc/mwait.d: Likewise.
* testsuite/gas/sparc/mism-1.s: Expand to check v9b and v9e
mismatch architecture errors.
* testsuite/gas/sparc/mism-2.s: New file.
The current sparc assembler breaks when the name of an ancillary-state
register, privileged register or hyperprivileged register has a
%-pseudo-operation name as a prefix. For example, %hmcdper and %hm(),
or %hintp and %hi().
This patch fixes it by introducing a new table `perc_table' (for
%-table) that contains an entry for every %name supported by the
assembler, other than the general registers. This table is used to
detect name collisions when the assembler tries to detect a %-pseudo-op.
This patch also fixes a related bug, making sure that v9a_asr_table and
hpriv_reg_table are sorted in reverse lexicographic order, as otherwise
the search code may fail.
gas/ChangeLog:
2016-06-17 Jose E. Marchesi <jose.marchesi@oracle.com>
* config/tc-sparc.c (priv_reg_table): Use NULL instead of the
empty string to mark the end of the array.
(hpriv_reg_table): Likewise.
(v9a_asr_table): Likewise.
(cmp_reg_entry): Handle entries with NULL names.
(F_POP_V9): Define.
(F_POP_PCREL): Likewise.
(F_POP_TLS_CALL): Likewise.
(F_POP_POSTFIX): Likewise.
(struct pop_entry): New type.
(pop_table): New variable.
(enum pop_entry_type): New type.
(struct perc_entry): Likewise.
(NUM_PERC_ENTRIES): Define.
(perc_table): New variable.
(cmp_perc_entry): New function.
(md_begin): Sort hpriv_reg_table and v9a_asr_table, and initialize
perc_table.
(sparc_ip): Handle entries with NULL names in priv_reg_table,
hpriv_reg_table and v9a_asr_table. Use perc_table to handle
%-pseudo-ops.