2005-01-24 Andrew Cagney <cagney@gnu.org>
* infrun.c (handle_inferior_event): Handle back-to-back and nested
signals where the step_resume_breakpoint may have already been
inserted.
Index: testsuite/ChangeLog
2005-01-24 Andrew Cagney <cagney@gnu.org>
* gdb.base/sigrepeat.exp, gdb.base/sigrepeat.c: New test.
* infrun.c (check_for_old_step_resume_breakpoint): Delete.
(insert_step_resume_breakpoint): Delete.
(insert_step_resume_breakpoint_at_frame): New function.
(insert_step_resume_breakpoint_at_sal): New function.
(handle_inferior_event, step_into_function)
(insert_step_resume_breakpoint): Simplify by using same.
Fix PR breakpoints/1757.
* infrun.c (struct execution_control_state): Replace
remove_breakpoints_on_following_step with
step_after_step_resume_breakpoint.
(init_execution_control_state): Update.
(handle_inferior_event): For signals, when stepping off a
breakpoint, set step_after_step_resume_breakpoint. When
BPSTAT_WHAT_STEP_RESUME, do a single-step off the breakpoint.
(keep_going): Delete code handling
remove_breakpoints_on_following_step.
Index: testsuite/ChangeLog
2004-08-30 Andrew Cagney <cagney@gnu.org>
* gdb.base/sigstep.exp (breakpoint_over_handler): Remove kfail
gdb/1757.
* infrun.c (struct execution_control_state): Delete field
"stepping_through_sigtramp".
(init_execution_control_state): Do not set same.
(context_switch): Do not pass same to save_infrun_state and
load_infrun_state.
* gdbthread.h (struct thread_info): Delete field
stepping_through_sigtramp.
(save_infrun_state, load_infrun_state): Delete parameter
stepping_through_sigtramp.
* thread.c (load_infrun_state, save_infrun_state): Update.
* infrun.c (handle_inferior_event): Initialize stopped_by_watchpoint
to -1.
* breakpoint.c (bpstat_stop_status): Move check for ignoring
untriggered watchpoints to a separate if clause. Update function
comment regarding STOPPED_BY_WATCHPOINT argument.
* infrun.c (handle_inferior_event): Handle the case when a trampoline
ends up in the runtime resolver, and if the trampoline has no name.
Rearrange the code so that all the trampoline processing happens before
other step-out-of-range handling.
* infrun.c (handle_inferior_event): Don't treat an invalid ptid
as a new thread event.
* thread_db.c (thread_get_info_callback): If the thread is a
zombie, return TD_THR_ZOMBIE.
* (thread_from_lwp): If thread_get_info_callback returns
TD_THR_ZOMBIE, check if the thread is still on the thread list
and return a -1 ptid if not found.
(thread_db_wait): If thread_from_lwp returns a -1 ptid, then
change the status to TARGET_WAITKIND_SPURIOUS.
STOPPED_BY_WATCHPOINT. Use it instead of testing
target_stopped_data_address agaist 0 to check whether
or not we stopped due to a hardware watchpoint.
* breakpoint.h (bpstat_stop_status): Adapt prototype.
* infrun.c (handle_inferior_event): Call bpstat_stop_status
with new argument.
* infrun.c (handle_inferior_event): Simplify code handling
step-into or return-from a signal trampoline.
Index: testsuite/ChangeLog
2004-05-11 Andrew Cagney <cagney@redhat.com>
* gdb.base/sigstep.exp (advancei): Update KFAILs. gdb/1613 is
fixed but revealed gdb/1639.
* infrun.c (check_sigtramp2): Delete function.
(handle_inferior_event): When single stepping, and taking a
signal, set a breakpoint at the signal return address. Delete
redundant calls to check_sigtramp2.
(insert_step_resume_breakpoint): New function.
(through_sigtramp_breakpoint, handle_inferior_event)
(follow_exec, wait_for_inferior, fetch_inferior_event)
(currently_stepping, keep_going): Delete most uses of
through_sigtramp_breakpoint, not that it should be deleted.
(delete_breakpoint_current_contents): Delete function.
Index: testsuite/ChangeLog
2004-05-10 Andrew Cagney <cagney@redhat.com>
* gdb.base/signals.exp (signal_tests_1): Simplify "continue to
func1" and "next to 2nd alarm", kernel bug avoided.
From Paul Koning <pkoning@equallogic.com>:
* breakpoint.c (free_valchain): New function.
(insert_bp_location, delete_breakpoint): Use free_valchain.
(remove_breakpoint): Do not remove the valchain.
(bpstat_stop_status): If not stopped by watchpoint, skip
watchpoints when generating stop status list.
* infrun.c (handle_inferior_event): Make
stepped_after_stopped_by_watchpoint a global variable.
* remote.c (remote_stopped_data_address): Return watch data
address rather than zero if stepped_after_stopped_by_watchpoint is
set.
2004-03-15 Andrew Cagney <cagney@redhat.com>
* infrun.c (handle_step_into_function, step_over_function): Only
update and use STEP_FRAME_ID when the system is using legacy
frames. Update comments.
instructions to generate a SIGSEGV in addition to SIGTRAP, SIGILL
and SIGEMT. Update comments.
* NEWS (Revised SPARC target): Mention support for non-executable
stack.
and check the specified thread for each breakpoint.
* breakpoint.h (bpstat_stop_status): Update prototype.
* infrun.c (handle_inferior_event): Update calls to
bpstat_stop_status.
argument, and change first argument to a CORE_ADDR.
* breakpoint.h (bpstat_stop_status): Update prototype.
* infrun.c (adjust_pc_after_break): Add a new comment.
(handle_inferior_event): Update calls to bpstat_stop_status.
* infrun.c (prev_pc): Move declaration ahead of proceed().
(proceed): Refresh prev_pc value before resuming.
(stop_stepping): Remove code to refresh prev_pc.
* gdbarch.sh (SAVED_PC_AFTER_CALL): Add a predicate.
* gdbarch.h, gdbarch.c: Re-generate.
* d10v-tdep.c (d10v_saved_pc_after_call): Delete function.
(d10v_gdbarch_init): Do not set saved_pc_after_call.
* infrun.c (step_over_function): Call SAVED_PC_AFTER_CALL_P
conditionally, use frame_pc_unwind as an alternative. Add
comments.
* arch-utils.c (init_frame_pc_default): Only call
SAVED_PC_AFTER_CALL when available.
* infrun.c (stop_soon_quietly): Make it an enum, to better
override the default behavior of handle_inferior_event.
(clear_proceed_status): Update uses of stop_soon_quietly to
reflect that it is now an enum.
(start_remote): Ditto.
(handle_inferior_event): Change logic a bit if stop_soon_quietly
is set to handle the new GNU/Linux kernel behavior for
attach/sigstop. Update uses of stop_soon_quietly.
* inferior.h (enum stop_kind): New enum.
* infcmd.c (attach_command): Use STOP_QUIETLY_NO_SIGSTOP.
Reset normal handle_inferior_event behavior, afterwards.
* fork-child.c (startup_inferior): Update.
* alpha-tdep.c (heuristic_proc_start): Update.
* solib-svr4.c (svr4_solib_create_inferior_hook): Update.
* solib-sunos.c (sunos_solib_create_inferior_hook): Update.
* solib-osf.c (osf_solib_create_inferior_hook): Update.
* solib-irix.c (irix_solib_create_inferior_hook): Update.
* remote-vx.c (vx_create_inferior): Update.
* mips-tdep.c (heuristic_proc_start): Update.
* infrun.c (follow_fork): Use ISO C definition.
* expprint.c (print_subexp): Use xfree instead of free.
* charset.c: Include "gdb_string.h" instead of <string.h>.
(register_iconv_charsets): Use ISO C definition.
(host_charset, target_charset): Ditto.
* Makefile.in (charset.o): Update dependencies.
(mi-cmd-env.o): Update dependencies.
Index: mi/ChangeLog
2003-01-09 Andrew Cagney <ac131313@redhat.com>
* mi-cmd-env.c: Include "gdb_string.h" instead of <string.h>.
Move all includes to after "defs.h".
* frame.c (deprecated_update_current_frame_pc_hack): New
function.
* frame.h (deprecated_update_current_frame_pc_hack): Declare.
* infrun.c (normal_stop): Use said function instead of directly
modifying the frame's PC.
and saw_child_exec.
(follow_fork, init_wait_for_inferior, handle_inferior_event): Remove
references to saw_parent_fork, saw_child_fork, and saw_child_exec.
(stop_stepping): Remove outdated check for child vfork events.
CHILD_FOLLOW_FORK.
* hppah-nat.c (saved_vfork_pid): Add.
(child_post_follow_vfork): Remove.
(child_follow_fork): New function.
(child_wait): Call detach_breakpoints after receiving the child vfork.
Call child_resume directly instead of going through resume ().
Make sure we have the exec before reporting the vfork.
* inferior.h (follow_inferior_reset_breakpoints): Add prototype.
* infrun.c (follow_fork, follow_vfork, follow_inferior_fork): Remove.
(follow_fork): New function. Call target_follow_fork.
(follow_inferior_reset_breakpoints): New function broken out from
old follow_inferior_fork.
(resume): Remove hack to follow exec after vfork.
* inftarg.c (child_post_follow_vfork): Remove.
(child_follow_fork): New function.
(init_child_ops): Replace to_post_follow_vfork with to_follow_fork.
* target.c (cleanup_target): Replace to_post_follow_vfork with
to_follow_fork.
(update_current_target): Likewise.
(setup_target_debug): Likewise.
(debug_to_post_follow_vfork): Remove.
(debug_to_follow_fork): New function.
* target.h (struct target_ops): Replace to_post_folow_vfork with
to_follow_fork.
(child_post_follow_vfork): Remove prototype.
(child_follow_fork): Add prototype.
(target_post_follow_vfork): Remove macro.
(target_follow_fork): Add macro.
testsuite/
* gdb.base/foll-vfork.exp: Re-enable test on HP/UX.
(child_post_follow_vfork): Cancel pending exec event if we follow
the parent.
(child_wait): Only return TARGET_WAITKIND_VFORKED when all necessary
events have been processed. Return a fake TARGET_WAITKIND_EXECD
event at the following wait call if necessary.
* infrun.c (follow_vfork): Don't follow_exec here.
(handle_inferior_event): Add comment to TARGET_WAITKIND_EXECD
case about HP/UX 10.20. Remove code pushed down to
hppah-nat.c:child_wait.
* infttrace.c (child_resume): Use TT_PROC_CONTINUE if
vfork_in_flight is set.
for the parent's fork event.
* infrun.c (handle_inferior_event): Only expect one fork event.
Call prepare_to_wait for TARGET_WAITKIND_IGNORE. Update comment.
* target.h: Update comment for TARGET_WAITKIND_IGNORE.
when breakpoints fail. Move general breakpoint error messages to
insert_breakpoints.
* breakpoint.c (insert_breakpoints): Change warnings when
breakpoints are nto inserted to specify the type. Remove call to
memory_error when hardware breakpoints can't be inserted. Remove
multiple calls to warning so all messages are sent to the user at
once.
(delete_breakpoints): Make insert error messsages more explicit.
procfs appears to be broken when debugging on multi-processor
machines. So enable software single stepping in order to avoid
using the procfs interface to do next/step operations, using
internal breakpoints instead.
* infrun.c (handle_inferior_event): Readjust the stop_pc by
DECR_PC_AFTER_BREAK when hitting a single step breakpoint, to
make this pc address equal to the value it would have if the
system stepping capability was used. Also set a new flag used
to ensure that we don't readjust the PC one more time later.
* breakpoint.c (bpstat_stop_status): Do not adjust the PC
address by DECR_PC_AFTER_BREAK when software single step is
in use for this architecture, as this has already been taken
care of in handle_inferior_event().
signal, check whether we hit a breakpoint before checking for a
single step breakpoint. Otherwise, GDB fails to notice that a
breakpoint has been hit when stepping onto a breakpoint.
regcache'''.
(xmalloc_inferior_status): Delete function.
(free_inferior_status): Delete function.
(normal_stop): Use regcache_cpy.
(struct inferior_status): Change type of fields ``stop_registers''
and ``registers'' to ``struct regcache''.
(write_inferior_status_register): Use regcache_write.
(save_inferior_status): Instead of calling
xmalloc_inferior_status, allocate the inf_status buffer directly.
Use regcache_dup_no_passthrough and regcache_dup to save the
buffers.
(restore_inferior_status): Use regcache_xfree and regcache_cpy.
Replace the stop_registers regcache instead of overriding it. Use
regcache_xfree. Instead of calling free_inferior_status, xfree
the buffer directly.
(discard_inferior_status): Use regcache_xfree. Instead of calling
free_inferior_status, xfree the buffer directly.
(build_infrun): Use regcache_xmalloc.
(_initialize_infrun): Delete redundant call to build_infrun.
* Makefile.in (infcmd.o): Add $(regcache_h).
* infcmd.c: Include "regcache.h".
(run_stack_dummy): Use deprecated_grub_regcache_for_registers to
obtain the address of `stop_registers' register buffer.
(print_return_value): Ditto.
* inferior.h (struct regcache): Add opaque declaration.
(stop_registers): Change variable's declared type to ``struct
regcache''.
selected_frame_address and selected_level with field
selected_frame_id.
(save_inferior_status): Update. Use get_frame_id.
(struct restore_selected_frame_args): Delete.
(restore_selected_frame): Update. Use frame_find_by_id.
(restore_inferior_status): Update.
* breakpoint.h (struct breakpoint): Change type of
watchpoint_frame to frame_id.
* breakpoint.c (insert_breakpoints): Use frame_find_by_id. Remove
call to get_current_frame.
(do_enable_breakpoint): Use frame_find_by_id. Remove call to
get_current_frame.
(watchpoint_check): Use frame_find_by_id.
* frame.h (record_selected_frame): Delete declaration.
* stack.c (record_selected_frame): Delete function.
* frame.h (struct frame_id): Define.
(get_frame_id): Declare.
(frame_find_by_id): Declare.
* frame.c (frame_find_by_id): New function.
(get_frame_id): New function.
(execute_cmd_pre_hook): Declare.
* cli/cli-script.c (clear_hook_in_cleanup): New function.
(execute_cmd_post_hook, execute_cmd_pre_hook): New
functions. Execute pre/post hook while ensuring that afterwords
hook_in is cleared.
* top.c (execute_command): Use execute_cmd_post_hook, and
execute_cmd_pre_hook to execute pre/post commands.
* infrun.c (normal_stop): Pass stop_command and not pre_hook to
hook_stop_stub.
(hook_stop_stub): Call execute_cmd_pre_hook.
* gdbarch.c gdbarch.h: Regenerate.
* breakpoint.c (create_longjmp_breakpoint): Always compile this
function.
(breakpoint_reset): Test GET_LONGJMP_TARGET_P().
* infrun.c (GET_LONGJMP_TARGET): Delete default definition.
(handle_inferior_event): Test GET_LONGJMP_TARGET_P().
* arm-tdep.h (struct gdbarch_tdep): Add jb_pc and jb_elt_size fields.
* arm-tdep.c (arm_get_longjmp_target): New function.
(arm_gdbarch_init): Initialize jb_pc to -1. If ABI handler changes
this to a positive value register arm_get_longjmp_target as the
longjmp handler.
* arm-linux-tdep.c (arm_get_longjmp_target): Delete.
(arm_linux_init_abi): Set up longjmp description in tdep.
* armnbsd-nat.c (get_longjmp_target): Delete.
* armnbsd-tdep.c (arm_netbsd_init_abi_common): Set up longjmp
description in tdep.
* config/arm/tm-nbsd.h (JB_ELEMENT_SIZE, JB_PC): Delete.
(get_longjmp_target): Delete declaration.
(GET_LONGJMP_TARGET): Delete.
* config/arm/tm-linux.h (arm_get_longjmp_target): Delete declaration.
(GET_LONGJMP_TARGET): Delete.
* top.c (command_loop): Remove tui insert_mode hacks; don't call
tuiCleanUp because this must be made with atexit by tui.
* symfile.c (symbol_file_command): Remove call to TUIDO
* stack.c (show_and_print_stack_frame_stub): Remove tui check;
not necessary when using the selected frame hooks.
(print_stack_frame_stub): Likewise.
(print_frame_info_base): Likewise.
(print_frame_info): Likewise.
(up_silently_command): Likewise.
(down_silently_command): Likewise.
(show_stack_frame): Likewise for TUIDO.
(select_frame): Likewise.
(select_and_print_frame): Likewise.
(stack_publish_stopped_with_no_frame): Remove.
(select_and_maybe_print_frame): Remove.
* main.c (captured_main): Remove tui_fileopen and tuiInit; tui
must use the initialize ui hook.
* infrun.c (normal_stop): Remove call to TUIDO; tui must use the
selected frame hooks.
* event-top.c (command_handler): Remove tui insert_mode hack.
* defs.h: Remove TUIDO; Only include tui.h.
* breakpoint.c (mention): Remove calls to TUIDO.
(delete_breakpoint): Remove tui hacks; tui must install
the breakpoint hooks.
* infrun.c (handle_inferior_event): Replace prev_pc test in all
calls to bpstat_stop_status (removed in 1999-09-24). This test
helps distinguish stepping over a breakpoint trap from stepping
thru a jump to the instruction after a breakpoint trap.
(handle_inferior_event): Don't bother writing the PC if
DECR_PC_AFTER_BREAK is zero (optimization).
* breakpoint.c (bpstat_stop_status): Add comment explaining the
purpose and usage of the "not_a_breakpoint" argument in computing
the breakpoint address.
* infrun.c: Eliminate the "thread_step_needed" state variable,
and replace it with a relatively simple test in resume.
(resume): Replace thread_step_needed logic with a test for
stepping, breakpoint_here_p and breakpoints_inserted.
Move CANNOT_STEP_BREAKPOINT logic to after thread_step logic.
(proceed): Discard thread_step_needed logic.
(wait_for_inferior, fetch_inferior_event, handle_inferior_event):
Discard thread_step_needed logic.
* infrun.c (context_switch): New function. Abstract the operation
of saving and restoring infrun's state when switching threads.
(handle_inferior_event): Normalize the handling of the 'thread hop'
event (when the wrong thread hits a thread-specific breakpoint,
and we need to solo-step that thread past the breakpoint).
Call keep_going, instead of target_resume. Handle the subsequent
singlestep-trap as a normal event instead of just resuming.
* gdbthread.h (struct thread_info): Add new fields:
current_line, current_symtab, step_sp, for saved infrun state.
* thread.c (save_infrun_state, load_infrun_state): Save and
restore current_line, current_symtab, and step_sp.
(add_thread): Rather than adding assignments to initialize
the new fields, just use memset (tp, 0, sizeof (*tp).
This way future new fields will not be overlooked.
* infrun.c (handle_inferior_event): Save and restore save_sp,
current_line, and current_symtab when switching threads.
* thread.c (delete_step_resume_breakpoint): New function.
Maintain internal consistency of the thread list while deleting
a step_resume_breakpoint.
* gdbthread.h (delete_step_resume_breakpoint): Export.
* breakpoint.c (bpstat_find_step_resume_breakpoint):
Make thread-aware: don't return a step_resume_breakpoint
for the wrong thread.
* infrun.c (wait_for_inferior): Call delete_step_resume_breakpoint
instead of delete_breakpoint_current_contents.
(fetch_inferior_event): Ditto.
(handle_inferior_event): Call delete_step_resume_breakpoint
instead of delete_breakpoint.
* infrun.c (handle_inferior_event): After singlestepping over a
thread-specific breakpoint, use currently_stepping() to decide
whether to step or continue.
* arch-utils.c (default_prepare_to_proceed)
(generic_prepare_to_proceed): Added new functions.
* arch-utils.h: New function declarations for
default_prepare_to_proceed() and generic_prepare_to_proceed().
* gdbarch.sh: Added PREPARE_TO_PROCEED.
* gdbarch.c: Regenerated.
* gdbarch.h: Regenerated.
* inferior.h: Added get_last_target_status() declaration.
* infrun.c (get_last_target_status): Added new function.
(handle_inferior_event): Saves last pid and waitstatus, which will
get returned by get_last_target_status().
* hppa-tdep.c (prepare_to_proceed): Added comment stating that
prepare_to_proceed() is potentially redundant since
default_prepare_to_proceed() has been added.
* linux-thread.c (prepare_to_proceed): Ditto.
* lin-lwp.c (prepare_to_proceed): Ditto.
* m3-nat.c (prepare_to_proceed): Ditto.
Fix double parsing of filenames passed as command line arguments
to GDB (causes weird handling of escape characters).
Also, remove dependencies on the CLI from libgdb.
* call-cmds.h: Remove declaration of exec_file_command().
* gdbcore.h: Remove declaration of exec_file_command().
Add declarations for exec_open() and exec_file_clear().
* symfile.h: Add declarations for symbol_file_add_main() and
symbol_file_clear().
* exec.c (exec_open): New function. Implements to_open for exec
targets.
(exec_file_clear): New function. Makes GDB forget about a previously
specified executable file.
(exec_file_attach): Move parsing of arguments from here ...
(exec_file_command): ... to here.
(init_exec_ops): Use exec_open(), not exec_file_command() to
implement to_open for exec targets.
* symfile.c (symbol_file_add_main): New function. Call symbol_file_add() with default values. Used when the file name has already been parsed.
(symbol_file_clear): New function. Makes GDB forget about previously
read symbols.
(symbol_file_command): Call the above function instead of inline code.
* main.c: Include "symfile.h" and "gdbcore.h" instead of the deprecated
"call-cmds.h".
(captured_main): Call exec_file_attach() and symbol_file_add_main()
instead of exec_file_command() and symbol_file_command().
(captured_main): Add comment.
* corefile.c: Include "symfile.h".
(core_file_command): Call symbol_file_add_main() instead of
symbol_file_command().
(reopen_exec_file): Call exec_open() instead of exec_file_command().
* infcmd.c: Include "symfile.h".
(attach_command): Call symbol_file_add_main() instead of
symbol_file_command().
* infrun.c: Remove comment about the inclusion of "symfile.h",
not any longer appropriate.
(follow_exec): Call symbol_file_add_main() instead of
symbol_file_command().
* remote-es.c: Include "symfile.h".
(es1800_load): Call symbol_file_add_main() instead of
symbol_file_command().
* remote-vx.c: Remove comment about the inclusion of "symfile.h",
not any longer appropriate.
(vx-wait): Call symbol_file_add_main() instead of
symbol_file_command().
* solib-svr4.c (open_symbol_file_object): Call symbol_file_add_main()
instead of symbol_file_command().
* v850ice.c (ice_file): Call exec_open(), exec_file_attach() and
symbol_file_add_main() instead of exec_file_command() and
symbol_file_command().
* Makefile.in: Update dependencies.
step_over_calls.
* infcmd.c (step_over_calls): Change definition.
(step_1): Use new enum values in relation to step_over_calls.
(step_once): Ditto.
(until_next_command): Ditto.
* infrun.c (clear_proceed_status): Ditto.
(handle_inferior_event): Ditto.
* inferior.h (step_stop_if_no_debug): New variable.
* infrun.c (step_stop_if_no_debug): Declare.
(handle_inferior_event): Stop the step command if we entered a function without
line info.
(_initialize_infrun): New command 'set step-mode' to control the step command.
* infcmd.c (step_once): Switch to stepi mode if there is no line info
(and switching is enabled).
From Steven Johnson <sbjohnson@ozemail.com.au>:
This set of changes add "hookpost-" as an expansion on the original
hooking of commands to GDB. A Hook may now be run "AFTER" execution of
a command as well as before.
* command.h (struct cmd_list_element): Changed elements hook and hookee
to hook_pre and hookee_pre respectively. Added hook_post and hookee_post
for the post hook command operation. Added hook_in so that an executing
hook can be flagged to prevent recursion.
* command.c (add_cmd): Changed initilization of cmd_list_element to
reflect above changes.
(delete_cmd): Remove both pre and post hooks.
(help_cmd): Notify that the command has pre and/or post hooks.
* infrun.c (normal_stop): Change references to hook_pre from hook.
* top.c (execute_command): Run both pre and post hooks.
(define_command): Allow definition of both pre and post hooks.
The definition of pre-hooks is done as before, with the "hook-"
prefix for backward compatibility.
stepping out of a signal handler into its calling trampoline
ignore the value of step_frame_address.
(step_over_function): Only modify step_resume_breakpoint->frame if
the value of step_frame_address is non-zero.
breakpoint.c, breakpoint.h (remove_hw_watchpoints): New function.
infrun.c (resume): Remove hardware watchpoints before stepping
when CANNOT_STEP_HW_WATCHPOINTS is nonzero.
* infrun.c (set/show scheduler-locking) New command. Set a
mode bit that will control how GDB attempts to control thread
scheduling for step, continue, etc. (resume): make use of
the schedule-locking mode.
* target.h (struct target_ops): new field to_has_thread_control.
* sol-thread.c: initialize target_ops to_has_thread_control.
* procfs.c: ditto.
* target.c: ditto.
* m3-nat.c: ditto.
* remote.c: ditto.
* hpux-thread.c: ditto.
Update support for x86 Solaris 2.
* config/i386/tm-i386sol2.h, nm-i386sol2.h: New configuration
files for x86 Solaris 2.
* config/i386/i386sol2.mt, i386sol2.mh: Use them.
* config/sparc/tm-sun4sol2.h (PROCFS_GET_CARRY): New macro, extract
carry flag from a given regset.
(IS_STATIC_TRANSFORM_NAME): New macro, check if a symbol name
is a SunPro transformed name.
* i386-tdep.c (sunpro_static_transform_name): New function to
extract the source name from a SunPro transformed name.
* inferior.h (procfs_first_available, procfs_get_pid_fd):
Add prototypes.
* infrun.c (wait_for_inferior): Handle breakpoint hit in
signal handler without intervening stop in sigtramp.
* procfs.c (procfs_lwp_creation_handler): Use PROCFS_GET_CARRY
instead of direct access to the status register.
(procfs_get_pid_fd): New function, returns procfs fd for a given pid.
* sol-thread.c (ps_lgetLDT): New function, returns LDT for a given
lwpid.
(sol_find_new_threads): Handle failed libthread_db initialization
gracefully.
* stabsread.c (define_symbol): Use IS_STATIC_TRANSFORM_NAME
to check for a SunPro transformed symbol name.
mips_skip_stub, mips_ignore_helper): New functions for dealing
with MIPS16 call/return thunks.
(mips_init_frame_pc_first): New function to implement
INIT_FRAME_PC_FIRST macro; includes code from old macro plus
new code to skip over MIPS16 thunks.
(mips_frame_chain): Skip over MIPS16 thunks.
* config/mips/tm-mips.h (mips_in_call_stub, mips_in_return_stub,
mips_skip_stub, mips_ignore_helper): Declare.
(IN_SOLIB_CALL_TRAMPOLINE, IN_SOLIB_RETURN_TRAMPOLINE,
SKIP_TRAMPOLINE_CODE, IGNORE_HELPER_CALL): New macros that invoke
the above functions.
(INIT_FRAME_PC_FIRST): Change to invoke mips_init_frame_pc.
(mips_init_frame_pc): Declare.
* infrun.c (wait_for_inferior): Use new IGNORE_HELPER_CALL macro
to decide if certain library function calls should be ignored.
infrun.c, mac-nat.c, procfs.c, remote.c, sol-thread.c, thread.c,
win32-nat.c, config/nm-lynx.h: Rename thread.h to gdbthread.h to
avoid conflict with Solaris /usr/include/thread.h.
returns a possibly modified pid.
* inftarg.c (ptrace_him): Now returns pid;
* m3-nat.c (m3_trace_him): Now returns pid;
* infcmd.c (run_command): Minor cleanup.
* infrun.c (wait_for_inferior): Add another check for one_stepped
near where we read the pc to avoid erroneously setting
random_signal for multi-threaded support.
* procfs.c: Add support for Solaris LWPs. Remove def of
LOSING_POLL. Many cleanups... Several workarounds for Solaris
lossage. System call entry and exit are now handled by
dynamically registered handlers.
* (syscallname): Don't barf when handed an unknown syscall
number.
* (info_proc_syscalls): Ditto.
* sol-thread.c: New file. Implements Solaris thread support.
* symfile.c (symbol_file_add): Add call to target_new_objfile to
notify target-dependent code about new symbol tables.
* (clear_symtab_users): Call target_new_objfile to notify it of
the removal of all symbol tables.
* target.c (push_target): Make sure that to_close is non-zero
before calling it.
* target.h (target_new_objfile): Provide default.
* config/alpha/nm-osf2.h: Define LOSING_POLL because this version
of OSF can't hack using poll with /proc.
* config/sparc/nm-sun4sol2.h (target_new_objfile): Define to be
sol-thread-new-objfile.
* config/sparc/sun4sol2.mh: Add sol-thread.o to NATDEFFILES, and
add libthread_db.so.1 to NAT_CLIBS.
* config/sparc/tm-sun4sol2.h: Define PIDGET, TIDGET, and
target_pid_to_str.
outside of #ifdef conditionals. Don't trash the wait status
if we get a signal and the current instruction is nullified.
Fixes long standing problem on the PA (spurious SIGTRAPs)..
* breakpoint.c (breakpoint_re_set_one): Keep temporary
breakpoints bp_until, bp_finish, bp_watchpoint_cope, bp_call_dummy
and bp_step_resume in case breakpoint_re_set_one is called due
to a step over a dlopen call.
* infrun.c (wait_for_inferior): Always remove breakpoints from
inferior in BPSTAT_WHAT_CHECK_SHLIBS case.
* infrun.c (wait_for_inferior): Remove breakpoints and
switch terminal settings before calling SOLIB_ADD.
* solib.c (enable_break, SVR4 variant): Don't map in symbols
for the dynamic linker, the namespace pollution causes real
problems.
All references changed.
* breakpoint.c (bpstat_what): Add shlib_event to the class types.
Update state table. Reformat so that it's still readable.
When we hit the shlib_event breakpoint, set the calss of shlib_event.
(breakpoint_1): Add "shlib events" as a breakpoint type.
Print the shlib_event breakpoint like other breakpoints.
(create_solib_event_breakpoint): New function.
(breakpoint_re_set_one): Handle solib_event breakpoints.
* breakpoint.h (enum bytype): Add bp_shlib_event breakpoint type.
(enum bpstat_what_main_action): Add BPSTAT_WHAT_CHECK_SHLIBS
action.
(create_solib_event_breakpoint): Declare.
* infrun.c (wait_for_inferior): Handle CHECK_SHLIBS bpstat.
(normal_stop): Inform the user when the inferior stoped due
to a shared library event.
(_initialize_infrun): Add new set/show variable "stop_on-solib-events"
to control whether or not gdb continues the inferior or stops it when
a shared library event occurs.
* minsyms.c (lookup_minimal_symbol_solib_trampoline): New function.
* somsolib.c (TODO list): Update.
(som_solib_create_inferior_hook): Arrange for gdb to be notified
when significant shared library events occur.
* hppa-tdep.c (find_unwind_entry): No longer static.
First cut at the machine independent changes for 7363. Also includes
code to automatically track shl_load/shl_unload calls on hpux.
the step range test. Replace call detection test with much
simpler (and more efficient) test that doesn't require prologue
examination (as often).
* symtab.c symtab.h (in_prologue): New function that indicates
whether or not we are in a function prologue. This uses the
symbol table, and then falls back to prologue examination if that
fails. It's much more efficient for remote debugging because it
avoids examining memory, which is very slow. This is used in
wait_for_inferior to determine if we've made a function call that
needs to be skipped over (for next/nexti).
* mips-tdep.c (after_prologue): New function, returns the PC
after the prologue. Uses PDRs and the symbol table.
(mips_find_saved_regs): Use in_prologue() to avoid costly
prologue examination if possible.
(mips_skip_prologue): Use after_prologue() if possible to avoid
costly prologue examination.
wrong thread, make sure to write the fixed PC value into the thread
that stopped. Restart all threads after single stepping over a
breakpoint for a different thread.
* breakpoint.c (set_momentary_breakpoint): Make momentary
breakpoints thread specific in a multi-threaded program.
* lynx-nat.c (child_resume): Add some comments. Correctly
choose between the single and multi-threaded step and continue
ptrace calls.
Some of the lynx-6100 single stepping fixes.
trap_expected_after_continue.
* (wait_for_inferior): Fix for remote watchpoints. Don't try to
insert breakpoints while target is running (this only works on
*some* native targets). This may also speed up native watchpoints
considerably.
match stubs and protocol spec.
* gdbserver/remote-utils.c (remote_open): Cast to struct sockaddr
when passing to function which expects that.
The following changes aren't quite enough to make things work with
LynxOS (apprently kernel problems).
* infrun.c (wait_for_inferior): When resuming new thread, pass pid
not -1 for remote case.
* thread.c (info_threads_command): Give error if !target_has_stack.
* infrun.c (start_remote): Call init_thread_list.
* thread.c (info_threads_command): Don't call kill for remote
debugging target.
* target.c (normal_pid_to_str): Print "thread" not "process" for
remote.
* remote.c, gdbserver/*: Add 'H', 'S', and 'C' requests, 'X'
response, and `thread' part of 'T' response.
* gdbserver/*: If program exits, send packet to GDB before
exiting. Handle termination with a signal the same as exiting
with an exitstatus.
* remote.c: Don't try to kill program after getting an 'X'
response.
* infrun.c (wait_for_inferior): Add comment about kill versus mourn.
target_wait_hook to allow GUI to handle blocking for inferior. Call
call_command_hook in execute_command to provide means for wrapping
commands with GUI state change updates.
* gdbtk.c (gdb_cmd): Force GUI into idle mode when errors occur.
* (gdb_stop): New tcl command to stop the target process.
* (x_event, gdbtk_wait): Allow GUI to interrupt gdb out of target
waits.
* (gdbtk_call_command): Wrapper around command processing to
alert GUI of target state changes.
* (gdbtk_init): Get the fd of X server for doing async
notification of X events (via x_event). Setup new hooks.
* gdbtk.tcl: Add scrollbars to assembly and command windows.
* Change window foreground & background colors.
* Create margin tag for breakpoints in source and assembly windows.
* Add new routines to be invoked when target state changes to/from
idle.
* Add start of expression window.
* Change bindings of mouse button 1 in assembly and source window
to just set or clear breakpoints when in the margin tag.
* Change shape of register window to be more vertical to better
reflect it's contents.
* Add stop button.
* Cleanup some code around command window bindings.
* infrun.c (wait_for_inferior): Make sure
through_sigtramp_breakpoint is non-null before deleting.
names mean end of .o file.
* infrun.c (wait_for_inferior): Clean up multi-thread logic near
top of routine. Handle new thread notification cleanly.
* lynx-nat.c (child_wait): General cleanups, handle new LynxOS
thread notification scheme.
* (child_resume): General cleanups, handle resumption of all
threads properly.
Hardware watchpoints for Linux, from Rick Sladkey
(jrs@world.std.com).
* infrun.c (wait_for_inferior) [HAVE_CONTINUABLE_WATCHPOINT]: Add
new hardware breakpoint recovery method.
* i386v-nat.c (i386_insert_watchpoint,
i386_insert_nonaligned_watchpoint, i386_remove_watchpoint,
i386_stopped_by_watchpoint) [TARGET_CAN_USE_HARWARE_WATCHPOINT]:
New functions to support the 386 hardware debugging registers.
* config/i386/nm-linux.h (TARGET_CAN_USE_HARDWARE_WATCHPOINT,
HAVE_CONTINUABLE_WATCHPOINT, STOPPED_BY_WATCHPOINT,
target_insert_watchpoint, target_remove_watchpoint): Define these
macros to use the hardware debugging functions in i386v-nat.c.
