f6ac5f3d63
I.e., use C++ virtual methods and inheritance instead of tables of
function pointers.
Unfortunately, there's no way to do a smooth transition. ALL native
targets in the tree must be converted at the same time. I've tested
all I could with cross compilers and with help from GCC compile farm,
but naturally I haven't been able to test many of the ports. Still, I
made a best effort to port everything over, and while I expect some
build problems due to typos and such, which should be trivial to fix,
I don't expect any design problems.
* Implementation notes:
- The flattened current_target is gone. References to current_target
or current_target.beneath are replaced with references to
target_stack (the top of the stack) directly.
- To keep "set debug target" working, this adds a new debug_stratum
layer that sits on top of the stack, prints the debug, and delegates
to the target beneath.
In addition, this makes the shortname and longname properties of
target_ops be virtual methods instead of data fields, and makes the
debug target defer those to the target beneath. This is so that
debug code sprinkled around that does "if (debugtarget) ..." can
transparently print the name of the target beneath.
A patch later in the series actually splits out the
shortname/longname methods to a separate structure, but I preferred
to keep that chance separate as it is associated with changing a bit
the design of how targets are registered and open.
- Since you can't check whether a C++ virtual method is overridden,
the old method of checking whether a target_ops implements a method
by comparing the function pointer must be replaced with something
else.
Some cases are fixed by adding a parallel "can_do_foo" target_ops
methods. E.g.,:
+ for (t = target_stack; t != NULL; t = t->beneath)
{
- if (t->to_create_inferior != NULL)
+ if (t->can_create_inferior ())
break;
}
Others are fixed by changing void return type to bool or int return
type, and have the default implementation return false or -1, to
indicate lack of support.
- make-target-delegates was adjusted to generate C++ classes and
methods.
It needed tweaks to grok "virtual" in front of the target method
name, and for the fact that methods are no longer function pointers.
(In particular, the current code parsing the return type was simple
because it could simply parse up until the '(' in '(*to_foo)'.
It now generates a couple C++ classes that inherit target_ops:
dummy_target and debug_target.
Since we need to generate the class declarations as well, i.e., we
need to emit methods twice, we now generate the code in two passes.
- The core_target global is renamed to avoid conflict with the
"core_target" class.
- ctf/tfile targets
init_tracefile_ops is replaced by a base class that is inherited by
both ctf and tfile.
- bsd-uthread
The bsd_uthread_ops_hack hack is gone. It's not needed because
nothing was extending a target created by bsd_uthread_target.
- remote/extended-remote targets
This is a first pass, just enough to C++ify target_ops.
A later pass will convert more free functions to methods, and make
remote_state be truly per remote instance, allowing multiple
simultaneous instances of remote targets.
- inf-child/"native" is converted to an actual base class
(inf_child_target), that is inherited by all native targets.
- GNU/Linux
The old weird double-target linux_ops mechanism in linux-nat.c, is
gone, replaced by adding a few virtual methods to linux-nat.h's
target_ops, called low_XXX, that the concrete linux-nat
implementations override. Sort of like gdbserver's
linux_target_ops, but simpler, for requiring only one
target_ops-like hierarchy, which spares implementing the same method
twice when we need to forward the method to a low implementation.
The low target simply reimplements the target_ops method directly in
that case.
There are a few remaining linux-nat.c hooks that would be better
converted to low_ methods like above too. E.g.:
linux_nat_set_new_thread (t, x86_linux_new_thread);
linux_nat_set_new_fork (t, x86_linux_new_fork);
linux_nat_set_forget_process
That'll be done in a follow up patch.
- We can no longer use functions like x86_use_watchpoints to install
custom methods on an arbitrary base target.
The patch replaces instances of such a pattern with template mixins.
For example memory_breakpoint_target defined in target.h, or
x86_nat_target in x86-nat.h.
- linux_trad_target, MIPS and Alpha GNU/Linux
The code in the new linux-nat-trad.h/c files which was split off of
inf-ptrace.h/c recently, is converted to a C++ base class, and used
by the MIPS and Alpha GNU/Linux ports.
- BSD targets
The
$architecture x NetBSD/OpenBSD/FreeBSD
support matrix complicates things a bit. There's common BSD target
code, and there's common architecture-specific code shared between
the different BSDs. Currently, all that is stiched together to form
a final target, via the i386bsd_target, x86bsd_target,
fbsd_nat_add_target functions etc.
This introduces new fbsd_nat_target, obsd_nat_target and
nbsd_nat_target classes that serve as base/prototype target for the
corresponding BSD variant.
And introduces generic i386/AMD64 BSD targets, to be used as
template mixin to build a final target. Similarly, a generic SPARC
target is added, used by both BSD and Linux ports.
- bsd_kvm_add_target, BSD libkvm target
I considered making bsd_kvm_supply_pcb a virtual method, and then
have each port inherit bsd_kvm_target and override that method, but
that was resulting in lots of unjustified churn, so I left the
function pointer mechanism alone.
gdb/ChangeLog:
2018-05-02 Pedro Alves <palves@redhat.com>
John Baldwin <jhb@freebsd.org>
* target.h (enum strata) <debug_stratum>: New.
(struct target_ops) <all delegation methods>: Replace by C++
virtual methods, and drop "to_" prefix. All references updated
throughout.
<to_shortname, to_longname, to_doc, to_data,
to_have_steppable_watchpoint, to_have_continuable_watchpoint,
to_has_thread_control, to_attach_no_wait>: Delete, replaced by
virtual methods. All references updated throughout.
<can_attach, supports_terminal_ours, can_create_inferior,
get_thread_control_capabilities, attach_no_wait>: New
virtual methods.
<insert_breakpoint, remove_breakpoint>: Now
TARGET_DEFAULT_NORETURN methods.
<info_proc>: Now returns bool.
<to_magic>: Delete.
(OPS_MAGIC): Delete.
(current_target): Delete. All references replaced by references
to ...
(target_stack): ... this. New.
(target_shortname, target_longname): Adjust.
(target_can_run): Now a function declaration.
(default_child_has_all_memory, default_child_has_memory)
(default_child_has_stack, default_child_has_registers)
(default_child_has_execution): Remove target_ops parameter.
(complete_target_initialization): Delete.
(memory_breakpoint_target): New template class.
(test_target_ops): Refactor as a C++ class with virtual methods.
* make-target-delegates (NAME_PART): Tighten.
(POINTER_PART, CP_SYMBOL): New.
(SIMPLE_RETURN_PART): Reimplement.
(VEC_RETURN_PART): Expect less.
(RETURN_PART, VIRTUAL_PART): New.
(METHOD): Adjust to C++ virtual methods.
(scan_target_h): Remove reference to C99.
(dname): Output "target_ops::" prefix.
(write_function_header): Adjust to output a C++ class method.
(write_declaration): New.
(write_delegator): Adjust to output a C++ class method.
(tdname): Output "dummy_target::" prefix.
(write_tdefault, write_debugmethod): Adjust to output a C++ class
method.
(tdefault_names, debug_names): Delete.
(return_types, tdefaults, styles, argtypes_array): New.
(top level): All methods are delegators.
(print_class): New.
(top level): Print dummy_target and debug_target classes.
* target-delegates.c: Regenerate.
* target-debug.h (target_debug_print_enum_info_proc_what)
(target_debug_print_thread_control_capabilities)
(target_debug_print_thread_info_p): New.
* target.c (dummy_target): Delete.
(the_dummy_target, the_debug_target): New.
(target_stack): Now extern.
(set_targetdebug): Push/unpush debug target.
(default_child_has_all_memory, default_child_has_memory)
(default_child_has_stack, default_child_has_registers)
(default_child_has_execution): Remove target_ops parameter.
(complete_target_initialization): Delete.
(add_target_with_completer): No longer call
complete_target_initialization.
(target_supports_terminal_ours): Use regular delegation.
(update_current_target): Delete.
(push_target): No longer check magic number. Don't call
update_current_target.
(unpush_target): Don't call update_current_target.
(target_is_pushed): No longer check magic number.
(target_require_runnable): Skip for all stratums over
process_stratum.
(target_ops::info_proc): New.
(target_info_proc): Use find_target_at and
find_default_run_target.
(target_supports_disable_randomization): Use regular delegation.
(target_get_osdata): Use find_target_at.
(target_ops::open, target_ops::close, target_ops::can_attach)
(target_ops::attach, target_ops::can_create_inferior)
(target_ops::create_inferior, target_ops::can_run)
(target_can_run): New.
(default_fileio_target): Use regular delegation.
(target_ops::fileio_open, target_ops::fileio_pwrite)
(target_ops::fileio_pread, target_ops::fileio_fstat)
(target_ops::fileio_close, target_ops::fileio_unlink)
(target_ops::fileio_readlink): New.
(target_fileio_open_1, target_fileio_unlink)
(target_fileio_readlink): Always call the target method. Handle
FILEIO_ENOSYS.
(return_zero, return_zero_has_execution): Delete.
(init_dummy_target): Delete.
(dummy_target::dummy_target, dummy_target::shortname)
(dummy_target::longname, dummy_target::doc)
(debug_target::debug_target, debug_target::shortname)
(debug_target::longname, debug_target::doc): New.
(target_supports_delete_record): Use regular delegation.
(setup_target_debug): Delete.
(maintenance_print_target_stack): Skip debug_stratum.
(initialize_targets): Instantiate the_dummy_target and
the_debug_target.
* auxv.c (target_auxv_parse): Remove 'ops' parameter. Adjust to
use target_stack.
(target_auxv_search, fprint_target_auxv): Adjust.
(info_auxv_command): Adjust to use target_stack.
* auxv.h (target_auxv_parse): Remove 'ops' parameter.
* exceptions.c (print_flush): Handle a NULL target_stack.
* regcache.c (target_ops_no_register): Refactor as class with
virtual methods.
* exec.c (exec_target): New class.
(exec_ops): Now an exec_target.
(exec_open, exec_close_1, exec_get_section_table)
(exec_xfer_partial, exec_files_info, exec_has_memory)
(exec_make_note_section): Refactor as exec_target methods.
(exec_file_clear, ignore, exec_remove_breakpoint, init_exec_ops):
Delete.
(exec_target::find_memory_regions): New.
(_initialize_exec): Don't call init_exec_ops.
* gdbcore.h (exec_file_clear): Delete.
* corefile.c (core_target): Delete.
(core_file_command): Adjust.
* corelow.c (core_target): New class.
(the_core_target): New.
(core_close): Remove target_ops parameter.
(core_close_cleanup): Adjust.
(core_target::close): New.
(core_open, core_detach, get_core_registers, core_files_info)
(core_xfer_partial, core_thread_alive, core_read_description)
(core_pid_to_str, core_thread_name, core_has_memory)
(core_has_stack, core_has_registers, core_info_proc): Rework as
core_target methods.
(ignore, core_remove_breakpoint, init_core_ops): Delete.
(_initialize_corelow): Initialize the_core_target.
* gdbcore.h (core_target): Delete.
(the_core_target): New.
* ctf.c: (ctf_target): New class.
(ctf_ops): Now a ctf_target.
(ctf_open, ctf_close, ctf_files_info, ctf_fetch_registers)
(ctf_xfer_partial, ctf_get_trace_state_variable_value)
(ctf_trace_find, ctf_traceframe_info): Refactor as ctf_target
methods.
(init_ctf_ops): Delete.
(_initialize_ctf): Don't call it.
* tracefile-tfile.c (tfile_target): New class.
(tfile_ops): Now a tfile_target.
(tfile_open, tfile_close, tfile_files_info)
(tfile_get_tracepoint_status, tfile_trace_find)
(tfile_fetch_registers, tfile_xfer_partial)
(tfile_get_trace_state_variable_value, tfile_traceframe_info):
Refactor as tfile_target methods.
(tfile_xfer_partial_features): Remove target_ops parameter.
(init_tfile_ops): Delete.
(_initialize_tracefile_tfile): Don't call it.
* tracefile.c (tracefile_has_all_memory, tracefile_has_memory)
(tracefile_has_stack, tracefile_has_registers)
(tracefile_thread_alive, tracefile_get_trace_status): Refactor as
tracefile_target methods.
(init_tracefile_ops): Delete.
(tracefile_target::tracefile_target): New.
* tracefile.h: Include "target.h".
(tracefile_target): New class.
(init_tracefile_ops): Delete.
* spu-multiarch.c (spu_multiarch_target): New class.
(spu_ops): Now a spu_multiarch_target.
(spu_thread_architecture, spu_region_ok_for_hw_watchpoint)
(spu_fetch_registers, spu_store_registers, spu_xfer_partial)
(spu_search_memory, spu_mourn_inferior): Refactor as
spu_multiarch_target methods.
(init_spu_ops): Delete.
(_initialize_spu_multiarch): Remove references to init_spu_ops,
complete_target_initialization.
* ravenscar-thread.c (ravenscar_thread_target): New class.
(ravenscar_ops): Now a ravenscar_thread_target.
(ravenscar_resume, ravenscar_wait, ravenscar_update_thread_list)
(ravenscar_thread_alive, ravenscar_pid_to_str)
(ravenscar_fetch_registers, ravenscar_store_registers)
(ravenscar_prepare_to_store, ravenscar_stopped_by_sw_breakpoint)
(ravenscar_stopped_by_hw_breakpoint)
(ravenscar_stopped_by_watchpoint, ravenscar_stopped_data_address)
(ravenscar_mourn_inferior, ravenscar_core_of_thread)
(ravenscar_get_ada_task_ptid): Refactor as ravenscar_thread_target
methods.
(init_ravenscar_thread_ops): Delete.
(_initialize_ravenscar): Remove references to
init_ravenscar_thread_ops and complete_target_initialization.
* bsd-uthread.c (bsd_uthread_ops_hack): Delete.
(bsd_uthread_target): New class.
(bsd_uthread_ops): Now a bsd_uthread_target.
(bsd_uthread_activate): Adjust to refer to bsd_uthread_ops.
(bsd_uthread_close, bsd_uthread_mourn_inferior)
(bsd_uthread_fetch_registers, bsd_uthread_store_registers)
(bsd_uthread_wait, bsd_uthread_resume, bsd_uthread_thread_alive)
(bsd_uthread_update_thread_list, bsd_uthread_extra_thread_info)
(bsd_uthread_pid_to_str): Refactor as bsd_uthread_target methods.
(bsd_uthread_target): Delete function.
(_initialize_bsd_uthread): Remove reference to
complete_target_initialization.
* bfd-target.c (target_bfd_data): Delete. Fields folded into ...
(target_bfd): ... this new class.
(target_bfd_xfer_partial, target_bfd_get_section_table)
(target_bfd_close): Refactor as target_bfd methods.
(target_bfd::~target_bfd): New.
(target_bfd_reopen): Adjust.
(target_bfd::close): New.
* record-btrace.c (record_btrace_target): New class.
(record_btrace_ops): Now a record_btrace_target.
(record_btrace_open, record_btrace_stop_recording)
(record_btrace_disconnect, record_btrace_close)
(record_btrace_async, record_btrace_info)
(record_btrace_insn_history, record_btrace_insn_history_range)
(record_btrace_insn_history_from, record_btrace_call_history)
(record_btrace_call_history_range)
(record_btrace_call_history_from, record_btrace_record_method)
(record_btrace_is_replaying, record_btrace_will_replay)
(record_btrace_xfer_partial, record_btrace_insert_breakpoint)
(record_btrace_remove_breakpoint, record_btrace_fetch_registers)
(record_btrace_store_registers, record_btrace_prepare_to_store)
(record_btrace_to_get_unwinder)
(record_btrace_to_get_tailcall_unwinder, record_btrace_resume)
(record_btrace_commit_resume, record_btrace_wait)
(record_btrace_stop, record_btrace_can_execute_reverse)
(record_btrace_stopped_by_sw_breakpoint)
(record_btrace_supports_stopped_by_sw_breakpoint)
(record_btrace_stopped_by_hw_breakpoint)
(record_btrace_supports_stopped_by_hw_breakpoint)
(record_btrace_update_thread_list, record_btrace_thread_alive)
(record_btrace_goto_begin, record_btrace_goto_end)
(record_btrace_goto, record_btrace_stop_replaying_all)
(record_btrace_execution_direction)
(record_btrace_prepare_to_generate_core)
(record_btrace_done_generating_core): Refactor as
record_btrace_target methods.
(init_record_btrace_ops): Delete.
(_initialize_record_btrace): Remove reference to
init_record_btrace_ops.
* record-full.c (RECORD_FULL_IS_REPLAY): Adjust to always refer to
the execution_direction global.
(record_full_base_target, record_full_target)
(record_full_core_target): New classes.
(record_full_ops): Now a record_full_target.
(record_full_core_ops): Now a record_full_core_target.
(record_full_target::detach, record_full_target::disconnect)
(record_full_core_target::disconnect)
(record_full_target::mourn_inferior, record_full_target::kill):
New.
(record_full_open, record_full_close, record_full_async): Refactor
as methods of the record_full_base_target class.
(record_full_resume, record_full_commit_resume): Refactor
as methods of the record_full_target class.
(record_full_wait, record_full_stopped_by_watchpoint)
(record_full_stopped_data_address)
(record_full_stopped_by_sw_breakpoint)
(record_full_supports_stopped_by_sw_breakpoint)
(record_full_stopped_by_hw_breakpoint)
(record_full_supports_stopped_by_hw_breakpoint): Refactor as
methods of the record_full_base_target class.
(record_full_store_registers, record_full_xfer_partial)
(record_full_insert_breakpoint, record_full_remove_breakpoint):
Refactor as methods of the record_full_target class.
(record_full_can_execute_reverse, record_full_get_bookmark)
(record_full_goto_bookmark, record_full_execution_direction)
(record_full_record_method, record_full_info, record_full_delete)
(record_full_is_replaying, record_full_will_replay)
(record_full_goto_begin, record_full_goto_end, record_full_goto)
(record_full_stop_replaying): Refactor as methods of the
record_full_base_target class.
(record_full_core_resume, record_full_core_kill)
(record_full_core_fetch_registers)
(record_full_core_prepare_to_store)
(record_full_core_store_registers, record_full_core_xfer_partial)
(record_full_core_insert_breakpoint)
(record_full_core_remove_breakpoint)
(record_full_core_has_execution): Refactor
as methods of the record_full_core_target class.
(record_full_base_target::supports_delete_record): New.
(init_record_full_ops): Delete.
(init_record_full_core_ops): Delete.
(record_full_save): Refactor as method of the
record_full_base_target class.
(_initialize_record_full): Remove references to
init_record_full_ops and init_record_full_core_ops.
* remote.c (remote_target, extended_remote_target): New classes.
(remote_ops): Now a remote_target.
(extended_remote_ops): Now an extended_remote_target.
(remote_insert_fork_catchpoint, remote_remove_fork_catchpoint)
(remote_insert_vfork_catchpoint, remote_remove_vfork_catchpoint)
(remote_insert_exec_catchpoint, remote_remove_exec_catchpoint)
(remote_pass_signals, remote_set_syscall_catchpoint)
(remote_program_signals, )
(remote_thread_always_alive): Remove target_ops parameter.
(remote_thread_alive, remote_thread_name)
(remote_update_thread_list, remote_threads_extra_info)
(remote_static_tracepoint_marker_at)
(remote_static_tracepoint_markers_by_strid)
(remote_get_ada_task_ptid, remote_close, remote_start_remote)
(remote_open): Refactor as methods of remote_target.
(extended_remote_open, extended_remote_detach)
(extended_remote_attach, extended_remote_post_attach):
(extended_remote_supports_disable_randomization)
(extended_remote_create_inferior): : Refactor as method of
extended_remote_target.
(remote_set_permissions, remote_open_1, remote_detach)
(remote_follow_fork, remote_follow_exec, remote_disconnect)
(remote_resume, remote_commit_resume, remote_stop)
(remote_interrupt, remote_pass_ctrlc, remote_terminal_inferior)
(remote_terminal_ours, remote_wait, remote_fetch_registers)
(remote_prepare_to_store, remote_store_registers)
(remote_flash_erase, remote_flash_done, remote_files_info)
(remote_kill, remote_mourn, remote_insert_breakpoint)
(remote_remove_breakpoint, remote_insert_watchpoint)
(remote_watchpoint_addr_within_range)
(remote_remove_watchpoint, remote_region_ok_for_hw_watchpoint)
(remote_check_watch_resources, remote_stopped_by_sw_breakpoint)
(remote_supports_stopped_by_sw_breakpoint)
(remote_stopped_by_hw_breakpoint)
(remote_supports_stopped_by_hw_breakpoint)
(remote_stopped_by_watchpoint, remote_stopped_data_address)
(remote_insert_hw_breakpoint, remote_remove_hw_breakpoint)
(remote_verify_memory): Refactor as methods of remote_target.
(remote_write_qxfer, remote_read_qxfer): Remove target_ops
parameter.
(remote_xfer_partial, remote_get_memory_xfer_limit)
(remote_search_memory, remote_rcmd, remote_memory_map)
(remote_pid_to_str, remote_get_thread_local_address)
(remote_get_tib_address, remote_read_description): Refactor as
methods of remote_target.
(remote_target::fileio_open, remote_target::fileio_pwrite)
(remote_target::fileio_pread, remote_target::fileio_close): New.
(remote_hostio_readlink, remote_hostio_fstat)
(remote_filesystem_is_local, remote_can_execute_reverse)
(remote_supports_non_stop, remote_supports_disable_randomization)
(remote_supports_multi_process, remote_supports_cond_breakpoints)
(remote_supports_enable_disable_tracepoint)
(remote_supports_string_tracing)
(remote_can_run_breakpoint_commands, remote_trace_init)
(remote_download_tracepoint, remote_can_download_tracepoint)
(remote_download_trace_state_variable, remote_enable_tracepoint)
(remote_disable_tracepoint, remote_trace_set_readonly_regions)
(remote_trace_start, remote_get_trace_status)
(remote_get_tracepoint_status, remote_trace_stop)
(remote_trace_find, remote_get_trace_state_variable_value)
(remote_save_trace_data, remote_get_raw_trace_data)
(remote_set_disconnected_tracing, remote_core_of_thread)
(remote_set_circular_trace_buffer, remote_traceframe_info)
(remote_get_min_fast_tracepoint_insn_len)
(remote_set_trace_buffer_size, remote_set_trace_notes)
(remote_use_agent, remote_can_use_agent, remote_enable_btrace)
(remote_disable_btrace, remote_teardown_btrace)
(remote_read_btrace, remote_btrace_conf)
(remote_augmented_libraries_svr4_read, remote_load)
(remote_pid_to_exec_file, remote_can_do_single_step)
(remote_execution_direction, remote_thread_handle_to_thread_info):
Refactor as methods of remote_target.
(init_remote_ops, init_extended_remote_ops): Delete.
(remote_can_async_p, remote_is_async_p, remote_async)
(remote_thread_events, remote_upload_tracepoints)
(remote_upload_trace_state_variables): Refactor as methods of
remote_target.
(_initialize_remote): Remove references to init_remote_ops and
init_extended_remote_ops.
* remote-sim.c (gdbsim_target): New class.
(gdbsim_fetch_register, gdbsim_store_register, gdbsim_kill)
(gdbsim_load, gdbsim_create_inferior, gdbsim_open, gdbsim_close)
(gdbsim_detach, gdbsim_resume, gdbsim_interrupt)
(gdbsim_wait, gdbsim_prepare_to_store, gdbsim_xfer_partial)
(gdbsim_files_info, gdbsim_mourn_inferior, gdbsim_thread_alive)
(gdbsim_pid_to_str, gdbsim_has_all_memory, gdbsim_has_memory):
Refactor as methods of gdbsim_target.
(gdbsim_ops): Now a gdbsim_target.
(init_gdbsim_ops): Delete.
(gdbsim_cntrl_c): Adjust.
(_initialize_remote_sim): Remove reference to init_gdbsim_ops.
* amd64-linux-nat.c (amd64_linux_nat_target): New class.
(the_amd64_linux_nat_target): New.
(amd64_linux_fetch_inferior_registers)
(amd64_linux_store_inferior_registers): Refactor as methods of
amd64_linux_nat_target.
(_initialize_amd64_linux_nat): Adjust. Set linux_target.
* i386-linux-nat.c: Don't include "linux-nat.h".
(i386_linux_nat_target): New class.
(the_i386_linux_nat_target): New.
(i386_linux_fetch_inferior_registers)
(i386_linux_store_inferior_registers, i386_linux_resume): Refactor
as methods of i386_linux_nat_target.
(_initialize_i386_linux_nat): Adjust. Set linux_target.
* inf-child.c (inf_child_ops): Delete.
(inf_child_fetch_inferior_registers)
(inf_child_store_inferior_registers): Delete.
(inf_child_post_attach, inf_child_prepare_to_store): Refactor as
methods of inf_child_target.
(inf_child_target::supports_terminal_ours)
(inf_child_target::terminal_init)
(inf_child_target::terminal_inferior)
(inf_child_target::terminal_ours_for_output)
(inf_child_target::terminal_ours, inf_child_target::interrupt)
(inf_child_target::pass_ctrlc, inf_child_target::terminal_info):
New.
(inf_child_open, inf_child_disconnect, inf_child_close)
(inf_child_mourn_inferior, inf_child_maybe_unpush_target)
(inf_child_post_startup_inferior, inf_child_can_run)
(inf_child_pid_to_exec_file): Refactor as methods of
inf_child_target.
(inf_child_follow_fork): Delete.
(inf_child_target::can_create_inferior)
(inf_child_target::can_attach): New.
(inf_child_target::has_all_memory, inf_child_target::has_memory)
(inf_child_target::has_stack, inf_child_target::has_registers)
(inf_child_target::has_execution): New.
(inf_child_fileio_open, inf_child_fileio_pwrite)
(inf_child_fileio_pread, inf_child_fileio_fstat)
(inf_child_fileio_close, inf_child_fileio_unlink)
(inf_child_fileio_readlink, inf_child_use_agent)
(inf_child_can_use_agent): Refactor as methods of
inf_child_target.
(return_zero, inf_child_target): Delete.
(inf_child_target::inf_child_target): New.
* inf-child.h: Include "target.h".
(inf_child_target): Delete function prototype.
(inf_child_target): New class.
(inf_child_open_target, inf_child_mourn_inferior)
(inf_child_maybe_unpush_target): Delete.
* inf-ptrace.c (inf_ptrace_target::~inf_ptrace_target): New.
(inf_ptrace_follow_fork, inf_ptrace_insert_fork_catchpoint)
(inf_ptrace_remove_fork_catchpoint, inf_ptrace_create_inferior)
(inf_ptrace_post_startup_inferior, inf_ptrace_mourn_inferior)
(inf_ptrace_attach, inf_ptrace_post_attach, inf_ptrace_detach)
(inf_ptrace_detach_success, inf_ptrace_kill, inf_ptrace_resume)
(inf_ptrace_wait, inf_ptrace_xfer_partial)
(inf_ptrace_thread_alive, inf_ptrace_files_info)
(inf_ptrace_pid_to_str, inf_ptrace_auxv_parse): Refactor as
methods of inf_ptrace_target.
(inf_ptrace_target): Delete function.
* inf-ptrace.h: Include "inf-child.h".
(inf_ptrace_target): Delete function declaration.
(inf_ptrace_target): New class.
(inf_ptrace_trad_target, inf_ptrace_detach_success): Delete.
* linux-nat.c (linux_target): New.
(linux_ops, linux_ops_saved, super_xfer_partial): Delete.
(linux_nat_target::~linux_nat_target): New.
(linux_child_post_attach, linux_child_post_startup_inferior)
(linux_child_follow_fork, linux_child_insert_fork_catchpoint)
(linux_child_remove_fork_catchpoint)
(linux_child_insert_vfork_catchpoint)
(linux_child_remove_vfork_catchpoint)
(linux_child_insert_exec_catchpoint)
(linux_child_remove_exec_catchpoint)
(linux_child_set_syscall_catchpoint, linux_nat_pass_signals)
(linux_nat_create_inferior, linux_nat_attach, linux_nat_detach)
(linux_nat_resume, linux_nat_stopped_by_watchpoint)
(linux_nat_stopped_data_address)
(linux_nat_stopped_by_sw_breakpoint)
(linux_nat_supports_stopped_by_sw_breakpoint)
(linux_nat_stopped_by_hw_breakpoint)
(linux_nat_supports_stopped_by_hw_breakpoint, linux_nat_wait)
(linux_nat_kill, linux_nat_mourn_inferior)
(linux_nat_xfer_partial, linux_nat_thread_alive)
(linux_nat_update_thread_list, linux_nat_pid_to_str)
(linux_nat_thread_name, linux_child_pid_to_exec_file)
(linux_child_static_tracepoint_markers_by_strid)
(linux_nat_is_async_p, linux_nat_can_async_p)
(linux_nat_supports_non_stop, linux_nat_always_non_stop_p)
(linux_nat_supports_multi_process)
(linux_nat_supports_disable_randomization, linux_nat_async)
(linux_nat_stop, linux_nat_close, linux_nat_thread_address_space)
(linux_nat_core_of_thread, linux_nat_filesystem_is_local)
(linux_nat_fileio_open, linux_nat_fileio_readlink)
(linux_nat_fileio_unlink, linux_nat_thread_events): Refactor as
methods of linux_nat_target.
(linux_nat_wait_1, linux_xfer_siginfo, linux_proc_xfer_partial)
(linux_proc_xfer_spu, linux_nat_xfer_osdata): Remove target_ops
parameter.
(check_stopped_by_watchpoint): Adjust.
(linux_xfer_partial): Delete.
(linux_target_install_ops, linux_target, linux_nat_add_target):
Delete.
(linux_nat_target::linux_nat_target): New.
* linux-nat.h: Include "inf-ptrace.h".
(linux_nat_target): New.
(linux_target, linux_target_install_ops, linux_nat_add_target):
Delete function declarations.
(linux_target): Declare global.
* linux-thread-db.c (thread_db_target): New.
(thread_db_target::thread_db_target): New.
(thread_db_ops): Delete.
(the_thread_db_target): New.
(thread_db_detach, thread_db_wait, thread_db_mourn_inferior)
(thread_db_update_thread_list, thread_db_pid_to_str)
(thread_db_extra_thread_info)
(thread_db_thread_handle_to_thread_info)
(thread_db_get_thread_local_address, thread_db_get_ada_task_ptid)
(thread_db_resume): Refactor as methods of thread_db_target.
(init_thread_db_ops): Delete.
(_initialize_thread_db): Remove reference to init_thread_db_ops.
* x86-linux-nat.c: Don't include "linux-nat.h".
(super_post_startup_inferior): Delete.
(x86_linux_nat_target::~x86_linux_nat_target): New.
(x86_linux_child_post_startup_inferior)
(x86_linux_read_description, x86_linux_enable_btrace)
(x86_linux_disable_btrace, x86_linux_teardown_btrace)
(x86_linux_read_btrace, x86_linux_btrace_conf): Refactor as
methods of x86_linux_nat_target.
(x86_linux_create_target): Delete. Bits folded ...
(x86_linux_add_target): ... here. Now takes a linux_nat_target
pointer.
* x86-linux-nat.h: Include "linux-nat.h" and "x86-nat.h".
(x86_linux_nat_target): New class.
(x86_linux_create_target): Delete.
(x86_linux_add_target): Now takes a linux_nat_target pointer.
* x86-nat.c (x86_insert_watchpoint, x86_remove_watchpoint)
(x86_region_ok_for_watchpoint, x86_stopped_data_address)
(x86_stopped_by_watchpoint, x86_insert_hw_breakpoint)
(x86_remove_hw_breakpoint, x86_can_use_hw_breakpoint)
(x86_stopped_by_hw_breakpoint): Remove target_ops parameter and
make extern.
(x86_use_watchpoints): Delete.
* x86-nat.h: Include "breakpoint.h" and "target.h".
(x86_use_watchpoints): Delete.
(x86_can_use_hw_breakpoint, x86_region_ok_for_hw_watchpoint)
(x86_stopped_by_watchpoint, x86_stopped_data_address)
(x86_insert_watchpoint, x86_remove_watchpoint)
(x86_insert_hw_breakpoint, x86_remove_hw_breakpoint)
(x86_stopped_by_hw_breakpoint): New declarations.
(x86_nat_target): New template class.
* ppc-linux-nat.c (ppc_linux_nat_target): New class.
(the_ppc_linux_nat_target): New.
(ppc_linux_fetch_inferior_registers)
(ppc_linux_can_use_hw_breakpoint)
(ppc_linux_region_ok_for_hw_watchpoint)
(ppc_linux_ranged_break_num_registers)
(ppc_linux_insert_hw_breakpoint, ppc_linux_remove_hw_breakpoint)
(ppc_linux_insert_mask_watchpoint)
(ppc_linux_remove_mask_watchpoint)
(ppc_linux_can_accel_watchpoint_condition)
(ppc_linux_insert_watchpoint, ppc_linux_remove_watchpoint)
(ppc_linux_stopped_data_address, ppc_linux_stopped_by_watchpoint)
(ppc_linux_watchpoint_addr_within_range)
(ppc_linux_masked_watch_num_registers)
(ppc_linux_store_inferior_registers, ppc_linux_auxv_parse)
(ppc_linux_read_description): Refactor as methods of
ppc_linux_nat_target.
(_initialize_ppc_linux_nat): Adjust. Set linux_target.
* procfs.c (procfs_xfer_partial): Delete forward declaration.
(procfs_target): New class.
(the_procfs_target): New.
(procfs_target): Delete function.
(procfs_auxv_parse, procfs_attach, procfs_detach)
(procfs_fetch_registers, procfs_store_registers, procfs_wait)
(procfs_xfer_partial, procfs_resume, procfs_pass_signals)
(procfs_files_info, procfs_kill_inferior, procfs_mourn_inferior)
(procfs_create_inferior, procfs_update_thread_list)
(procfs_thread_alive, procfs_pid_to_str)
(procfs_can_use_hw_breakpoint, procfs_stopped_by_watchpoint)
(procfs_stopped_data_address, procfs_insert_watchpoint)
(procfs_remove_watchpoint, procfs_region_ok_for_hw_watchpoint)
(proc_find_memory_regions, procfs_info_proc)
(procfs_make_note_section): Refactor as methods of procfs_target.
(_initialize_procfs): Adjust.
* sol-thread.c (sol_thread_target): New class.
(sol_thread_ops): Now a sol_thread_target.
(sol_thread_detach, sol_thread_resume, sol_thread_wait)
(sol_thread_fetch_registers, sol_thread_store_registers)
(sol_thread_xfer_partial, sol_thread_mourn_inferior)
(sol_thread_alive, solaris_pid_to_str, sol_update_thread_list)
(sol_get_ada_task_ptid): Refactor as methods of sol_thread_target.
(init_sol_thread_ops): Delete.
(_initialize_sol_thread): Adjust. Remove references to
init_sol_thread_ops and complete_target_initialization.
* windows-nat.c (windows_nat_target): New class.
(windows_fetch_inferior_registers)
(windows_store_inferior_registers, windows_resume, windows_wait)
(windows_attach, windows_detach, windows_pid_to_exec_file)
(windows_files_info, windows_create_inferior)
(windows_mourn_inferior, windows_interrupt, windows_kill_inferior)
(windows_close, windows_pid_to_str, windows_xfer_partial)
(windows_get_tib_address, windows_get_ada_task_ptid)
(windows_thread_name, windows_thread_alive): Refactor as
windows_nat_target methods.
(do_initial_windows_stuff): Adjust.
(windows_target): Delete function.
(_initialize_windows_nat): Adjust.
* darwin-nat.c (darwin_resume, darwin_wait_to, darwin_interrupt)
(darwin_mourn_inferior, darwin_kill_inferior)
(darwin_create_inferior, darwin_attach, darwin_detach)
(darwin_pid_to_str, darwin_thread_alive, darwin_xfer_partial)
(darwin_pid_to_exec_file, darwin_get_ada_task_ptid)
(darwin_supports_multi_process): Refactor as darwin_nat_target
methods.
(darwin_resume_to, darwin_files_info): Delete.
(_initialize_darwin_inferior): Rename to ...
(_initialize_darwin_nat): ... this. Adjust to C++ification.
* darwin-nat.h: Include "inf-child.h".
(darwin_nat_target): New class.
(darwin_complete_target): Delete.
* i386-darwin-nat.c (i386_darwin_nat_target): New class.
(darwin_target): New.
(i386_darwin_fetch_inferior_registers)
(i386_darwin_store_inferior_registers): Refactor as methods of
darwin_nat_target.
(darwin_complete_target): Delete, with ...
(_initialize_i386_darwin_nat): ... bits factored out here.
* alpha-linux-nat.c (alpha_linux_nat_target): New class.
(the_alpha_linux_nat_target): New.
(alpha_linux_register_u_offset): Refactor as
alpha_linux_nat_target method.
(_initialize_alpha_linux_nat): Adjust.
* linux-nat-trad.c (inf_ptrace_register_u_offset): Delete.
(inf_ptrace_fetch_register, inf_ptrace_fetch_registers)
(inf_ptrace_store_register, inf_ptrace_store_registers): Refact as
methods of linux_nat_trad_target.
(linux_trad_target): Delete.
* linux-nat-trad.h (linux_trad_target): Delete function.
(linux_nat_trad_target): New class.
* mips-linux-nat.c (mips_linux_nat_target): New class.
(super_fetch_registers, super_store_registers, super_close):
Delete.
(the_mips_linux_nat_target): New.
(mips64_linux_regsets_fetch_registers)
(mips64_linux_regsets_store_registers)
(mips64_linux_fetch_registers, mips64_linux_store_registers)
(mips_linux_register_u_offset, mips_linux_read_description)
(mips_linux_can_use_hw_breakpoint)
(mips_linux_stopped_by_watchpoint)
(mips_linux_stopped_data_address)
(mips_linux_region_ok_for_hw_watchpoint)
(mips_linux_insert_watchpoint, mips_linux_remove_watchpoint)
(mips_linux_close): Refactor as methods of mips_linux_nat.
(_initialize_mips_linux_nat): Adjust to C++ification.
* aix-thread.c (aix_thread_target): New class.
(aix_thread_ops): Now an aix_thread_target.
(aix_thread_detach, aix_thread_resume, aix_thread_wait)
(aix_thread_fetch_registers, aix_thread_store_registers)
(aix_thread_xfer_partial, aix_thread_mourn_inferior)
(aix_thread_thread_alive, aix_thread_pid_to_str)
(aix_thread_extra_thread_info, aix_thread_get_ada_task_ptid):
Refactor as methods of aix_thread_target.
(init_aix_thread_ops): Delete.
(_initialize_aix_thread): Remove references to init_aix_thread_ops
and complete_target_initialization.
* rs6000-nat.c (rs6000_xfer_shared_libraries): Delete.
(rs6000_nat_target): New class.
(the_rs6000_nat_target): New.
(rs6000_fetch_inferior_registers, rs6000_store_inferior_registers)
(rs6000_xfer_partial, rs6000_wait, rs6000_create_inferior)
(rs6000_xfer_shared_libraries): Refactor as rs6000_nat_target methods.
(super_create_inferior): Delete.
(_initialize_rs6000_nat): Adjust to C++ification.
* arm-linux-nat.c (arm_linux_nat_target): New class.
(the_arm_linux_nat_target): New.
(arm_linux_fetch_inferior_registers)
(arm_linux_store_inferior_registers, arm_linux_read_description)
(arm_linux_can_use_hw_breakpoint, arm_linux_insert_hw_breakpoint)
(arm_linux_remove_hw_breakpoint)
(arm_linux_region_ok_for_hw_watchpoint)
(arm_linux_insert_watchpoint, arm_linux_remove_watchpoint)
(arm_linux_stopped_data_address, arm_linux_stopped_by_watchpoint)
(arm_linux_watchpoint_addr_within_range): Refactor as methods of
arm_linux_nat_target.
(_initialize_arm_linux_nat): Adjust to C++ification.
* aarch64-linux-nat.c (aarch64_linux_nat_target): New class.
(the_aarch64_linux_nat_target): New.
(aarch64_linux_fetch_inferior_registers)
(aarch64_linux_store_inferior_registers)
(aarch64_linux_child_post_startup_inferior)
(aarch64_linux_read_description)
(aarch64_linux_can_use_hw_breakpoint)
(aarch64_linux_insert_hw_breakpoint)
(aarch64_linux_remove_hw_breakpoint)
(aarch64_linux_insert_watchpoint, aarch64_linux_remove_watchpoint)
(aarch64_linux_region_ok_for_hw_watchpoint)
(aarch64_linux_stopped_data_address)
(aarch64_linux_stopped_by_watchpoint)
(aarch64_linux_watchpoint_addr_within_range)
(aarch64_linux_can_do_single_step): Refactor as methods of
aarch64_linux_nat_target.
(super_post_startup_inferior): Delete.
(_initialize_aarch64_linux_nat): Adjust to C++ification.
* hppa-linux-nat.c (hppa_linux_nat_target): New class.
(the_hppa_linux_nat_target): New.
(hppa_linux_fetch_inferior_registers)
(hppa_linux_store_inferior_registers): Refactor as methods of
hppa_linux_nat_target.
(_initialize_hppa_linux_nat): Adjust to C++ification.
* ia64-linux-nat.c (ia64_linux_nat_target): New class.
(the_ia64_linux_nat_target): New.
(ia64_linux_insert_watchpoint, ia64_linux_remove_watchpoint)
(ia64_linux_stopped_data_address)
(ia64_linux_stopped_by_watchpoint, ia64_linux_fetch_registers)
(ia64_linux_store_registers, ia64_linux_xfer_partial): Refactor as
ia64_linux_nat_target methods.
(super_xfer_partial): Delete.
(_initialize_ia64_linux_nat): Adjust to C++ification.
* m32r-linux-nat.c (m32r_linux_nat_target): New class.
(the_m32r_linux_nat_target): New.
(m32r_linux_fetch_inferior_registers)
(m32r_linux_store_inferior_registers): Refactor as
m32r_linux_nat_target methods.
(_initialize_m32r_linux_nat): Adjust to C++ification.
* m68k-linux-nat.c (m68k_linux_nat_target): New class.
(the_m68k_linux_nat_target): New.
(m68k_linux_fetch_inferior_registers)
(m68k_linux_store_inferior_registers): Refactor as
m68k_linux_nat_target methods.
(_initialize_m68k_linux_nat): Adjust to C++ification.
* s390-linux-nat.c (s390_linux_nat_target): New class.
(the_s390_linux_nat_target): New.
(s390_linux_fetch_inferior_registers)
(s390_linux_store_inferior_registers, s390_stopped_by_watchpoint)
(s390_insert_watchpoint, s390_remove_watchpoint)
(s390_can_use_hw_breakpoint, s390_insert_hw_breakpoint)
(s390_remove_hw_breakpoint, s390_region_ok_for_hw_watchpoint)
(s390_auxv_parse, s390_read_description): Refactor as methods of
s390_linux_nat_target.
(_initialize_s390_nat): Adjust to C++ification.
* sparc-linux-nat.c (sparc_linux_nat_target): New class.
(the_sparc_linux_nat_target): New.
(_initialize_sparc_linux_nat): Adjust to C++ification.
* sparc-nat.c (sparc_fetch_inferior_registers)
(sparc_store_inferior_registers): Remove target_ops parameter.
* sparc-nat.h (sparc_fetch_inferior_registers)
(sparc_store_inferior_registers): Remove target_ops parameter.
* sparc64-linux-nat.c (sparc64_linux_nat_target): New class.
(the_sparc64_linux_nat_target): New.
(_initialize_sparc64_linux_nat): Adjust to C++ification.
* spu-linux-nat.c (spu_linux_nat_target): New class.
(the_spu_linux_nat_target): New.
(spu_child_post_startup_inferior, spu_child_post_attach)
(spu_child_wait, spu_fetch_inferior_registers)
(spu_store_inferior_registers, spu_xfer_partial)
(spu_can_use_hw_breakpoint): Refactor as spu_linux_nat_target
methods.
(_initialize_spu_nat): Adjust to C++ification.
* tilegx-linux-nat.c (tilegx_linux_nat_target): New class.
(the_tilegx_linux_nat_target): New.
(fetch_inferior_registers, store_inferior_registers):
Refactor as methods.
(_initialize_tile_linux_nat): Adjust to C++ification.
* xtensa-linux-nat.c (xtensa_linux_nat_target): New class.
(the_xtensa_linux_nat_target): New.
(xtensa_linux_fetch_inferior_registers)
(xtensa_linux_store_inferior_registers): Refactor as
xtensa_linux_nat_target methods.
(_initialize_xtensa_linux_nat): Adjust to C++ification.
* fbsd-nat.c (USE_SIGTRAP_SIGINFO): Delete.
(fbsd_pid_to_exec_file, fbsd_find_memory_regions)
(fbsd_find_memory_regions, fbsd_info_proc, fbsd_xfer_partial)
(fbsd_thread_alive, fbsd_pid_to_str, fbsd_thread_name)
(fbsd_update_thread_list, fbsd_resume, fbsd_wait)
(fbsd_stopped_by_sw_breakpoint)
(fbsd_supports_stopped_by_sw_breakpoint, fbsd_follow_fork)
(fbsd_insert_fork_catchpoint, fbsd_remove_fork_catchpoint)
(fbsd_insert_vfork_catchpoint, fbsd_remove_vfork_catchpoint)
(fbsd_post_startup_inferior, fbsd_post_attach)
(fbsd_insert_exec_catchpoint, fbsd_remove_exec_catchpoint)
(fbsd_set_syscall_catchpoint)
(super_xfer_partial, super_resume, super_wait)
(fbsd_supports_stopped_by_hw_breakpoint): Delete.
(fbsd_handle_debug_trap): Remove target_ops parameter.
(fbsd_nat_add_target): Delete.
* fbsd-nat.h: Include "inf-ptrace.h".
(fbsd_nat_add_target): Delete.
(USE_SIGTRAP_SIGINFO): Define.
(fbsd_nat_target): New class.
* amd64-bsd-nat.c (amd64bsd_fetch_inferior_registers)
(amd64bsd_store_inferior_registers): Remove target_ops parameter.
(amd64bsd_target): Delete.
* amd64-bsd-nat.h: New file.
* amd64-fbsd-nat.c: Include "amd64-bsd-nat.h" instead of
"x86-bsd-nat.h".
(amd64_fbsd_nat_target): New class.
(the_amd64_fbsd_nat_target): New.
(amd64fbsd_read_description): Refactor as method of
amd64_fbsd_nat_target.
(amd64_fbsd_nat_target::supports_stopped_by_hw_breakpoint): New.
(_initialize_amd64fbsd_nat): Adjust to C++ification.
* amd64-nat.h (amd64bsd_target): Delete function declaration.
* i386-bsd-nat.c (i386bsd_fetch_inferior_registers)
(i386bsd_store_inferior_registers): Remove target_ops parameter.
(i386bsd_target): Delete.
* i386-bsd-nat.h (i386bsd_target): Delete function declaration.
(i386bsd_fetch_inferior_registers)
(i386bsd_store_inferior_registers): Declare.
(i386_bsd_nat_target): New class.
* i386-fbsd-nat.c (i386_fbsd_nat_target): New class.
(the_i386_fbsd_nat_target): New.
(i386fbsd_resume, i386fbsd_read_description): Refactor as
i386_fbsd_nat_target methods.
(i386_fbsd_nat_target::supports_stopped_by_hw_breakpoint): New.
(_initialize_i386fbsd_nat): Adjust to C++ification.
* x86-bsd-nat.c (super_mourn_inferior): Delete.
(x86bsd_mourn_inferior, x86bsd_target): Delete.
(_initialize_x86_bsd_nat): Adjust to C++ification.
* x86-bsd-nat.h: Include "x86-nat.h".
(x86bsd_target): Delete declaration.
(x86bsd_nat_target): New class.
* aarch64-fbsd-nat.c (aarch64_fbsd_nat_target): New class.
(the_aarch64_fbsd_nat_target): New.
(aarch64_fbsd_fetch_inferior_registers)
(aarch64_fbsd_store_inferior_registers): Refactor as methods of
aarch64_fbsd_nat_target.
(_initialize_aarch64_fbsd_nat): Adjust to C++ification.
* alpha-bsd-nat.c (alpha_bsd_nat_target): New class.
(the_alpha_bsd_nat_target): New.
(alphabsd_fetch_inferior_registers)
(alphabsd_store_inferior_registers): Refactor as
alpha_bsd_nat_target methods.
(_initialize_alphabsd_nat): Refactor as methods of
alpha_bsd_nat_target.
* amd64-nbsd-nat.c: Include "amd64-bsd-nat.h".
(the_amd64_nbsd_nat_target): New.
(_initialize_amd64nbsd_nat): Adjust to C++ification.
* amd64-obsd-nat.c: Include "amd64-bsd-nat.h".
(the_amd64_obsd_nat_target): New.
(_initialize_amd64obsd_nat): Adjust to C++ification.
* arm-fbsd-nat.c (arm_fbsd_nat_target): New.
(the_arm_fbsd_nat_target): New.
(arm_fbsd_fetch_inferior_registers)
(arm_fbsd_store_inferior_registers, arm_fbsd_read_description):
(_initialize_arm_fbsd_nat): Refactor as methods of
arm_fbsd_nat_target.
(_initialize_arm_fbsd_nat): Adjust to C++ification.
* arm-nbsd-nat.c (arm_netbsd_nat_target): New class.
(the_arm_netbsd_nat_target): New.
(armnbsd_fetch_registers, armnbsd_store_registers): Refactor as
arm_netbsd_nat_target.
(_initialize_arm_netbsd_nat): Adjust to C++ification.
* hppa-nbsd-nat.c (hppa_nbsd_nat_target): New class.
(the_hppa_nbsd_nat_target): New.
(hppanbsd_fetch_registers, hppanbsd_store_registers): Refactor as
hppa_nbsd_nat_target methods.
(_initialize_hppanbsd_nat): Adjust to C++ification.
* hppa-obsd-nat.c (hppa_obsd_nat_target): New class.
(the_hppa_obsd_nat_target): New.
(hppaobsd_fetch_registers, hppaobsd_store_registers): Refactor as
methods of hppa_obsd_nat_target.
(_initialize_hppaobsd_nat): Adjust to C++ification. Use
add_target.
* i386-nbsd-nat.c (the_i386_nbsd_nat_target): New.
(_initialize_i386nbsd_nat): Adjust to C++ification. Use
add_target.
* i386-obsd-nat.c (the_i386_obsd_nat_target): New.
(_initialize_i386obsd_nat): Use add_target.
* m68k-bsd-nat.c (m68k_bsd_nat_target): New class.
(the_m68k_bsd_nat_target): New.
(m68kbsd_fetch_inferior_registers)
(m68kbsd_store_inferior_registers): Refactor as methods of
m68k_bsd_nat_target.
(_initialize_m68kbsd_nat): Adjust to C++ification.
* mips-fbsd-nat.c (mips_fbsd_nat_target): New class.
(the_mips_fbsd_nat_target): New.
(mips_fbsd_fetch_inferior_registers)
(mips_fbsd_store_inferior_registers): Refactor as methods of
mips_fbsd_nat_target.
(_initialize_mips_fbsd_nat): Adjust to C++ification. Use
add_target.
* mips-nbsd-nat.c (mips_nbsd_nat_target): New class.
(the_mips_nbsd_nat_target): New.
(mipsnbsd_fetch_inferior_registers)
(mipsnbsd_store_inferior_registers): Refactor as methods of
mips_nbsd_nat_target.
(_initialize_mipsnbsd_nat): Adjust to C++ification.
* mips64-obsd-nat.c (mips64_obsd_nat_target): New class.
(the_mips64_obsd_nat_target): New.
(mips64obsd_fetch_inferior_registers)
(mips64obsd_store_inferior_registers): Refactor as methods of
mips64_obsd_nat_target.
(_initialize_mips64obsd_nat): Adjust to C++ification. Use
add_target.
* nbsd-nat.c (nbsd_pid_to_exec_file): Refactor as method of
nbsd_nat_target.
* nbsd-nat.h: Include "inf-ptrace.h".
(nbsd_nat_target): New class.
* obsd-nat.c (obsd_pid_to_str, obsd_update_thread_list)
(obsd_wait): Refactor as methods of obsd_nat_target.
(obsd_add_target): Delete.
* obsd-nat.h: Include "inf-ptrace.h".
(obsd_nat_target): New class.
* ppc-fbsd-nat.c (ppc_fbsd_nat_target): New class.
(the_ppc_fbsd_nat_target): New.
(ppcfbsd_fetch_inferior_registers)
(ppcfbsd_store_inferior_registers): Refactor as methods of
ppc_fbsd_nat_target.
(_initialize_ppcfbsd_nat): Adjust to C++ification. Use
add_target.
* ppc-nbsd-nat.c (ppc_nbsd_nat_target): New class.
(the_ppc_nbsd_nat_target): New.
(ppcnbsd_fetch_inferior_registers)
(ppcnbsd_store_inferior_registers): Refactor as methods of
ppc_nbsd_nat_target.
(_initialize_ppcnbsd_nat): Adjust to C++ification.
* ppc-obsd-nat.c (ppc_obsd_nat_target): New class.
(the_ppc_obsd_nat_target): New.
(ppcobsd_fetch_registers, ppcobsd_store_registers): Refactor as
methods of ppc_obsd_nat_target.
(_initialize_ppcobsd_nat): Adjust to C++ification. Use
add_target.
* sh-nbsd-nat.c (sh_nbsd_nat_target): New class.
(the_sh_nbsd_nat_target): New.
(shnbsd_fetch_inferior_registers)
(shnbsd_store_inferior_registers): Refactor as methods of
sh_nbsd_nat_target.
(_initialize_shnbsd_nat): Adjust to C++ification.
* sparc-nat.c (sparc_xfer_wcookie): Make extern.
(inf_ptrace_xfer_partial): Delete.
(sparc_xfer_partial, sparc_target): Delete.
* sparc-nat.h (sparc_fetch_inferior_registers)
(sparc_store_inferior_registers, sparc_xfer_wcookie): Declare.
(sparc_target): Delete function declaration.
(sparc_target): New template class.
* sparc-nbsd-nat.c (the_sparc_nbsd_nat_target): New.
(_initialize_sparcnbsd_nat): Adjust to C++ification.
* sparc64-fbsd-nat.c (the_sparc64_fbsd_nat_target): New.
(_initialize_sparc64fbsd_nat): Adjust to C++ification. Use
add_target.
* sparc64-nbsd-nat.c (the_sparc64_nbsd_nat_target): New.
(_initialize_sparc64nbsd_nat): Adjust to C++ification.
* sparc64-obsd-nat.c (the_sparc64_obsd_nat_target): New.
(_initialize_sparc64obsd_nat): Adjust to C++ification. Use
add_target.
* vax-bsd-nat.c (vax_bsd_nat_target): New class.
(the_vax_bsd_nat_target): New.
(vaxbsd_fetch_inferior_registers)
(vaxbsd_store_inferior_registers): Refactor as vax_bsd_nat_target
methods.
(_initialize_vaxbsd_nat): Adjust to C++ification.
* bsd-kvm.c (bsd_kvm_target): New class.
(bsd_kvm_ops): Now a bsd_kvm_target.
(bsd_kvm_open, bsd_kvm_close, bsd_kvm_xfer_partial)
(bsd_kvm_files_info, bsd_kvm_fetch_registers)
(bsd_kvm_thread_alive, bsd_kvm_pid_to_str): Refactor as methods of
bsd_kvm_target.
(bsd_kvm_return_one): Delete.
(bsd_kvm_add_target): Adjust to C++ification.
* nto-procfs.c (nto_procfs_target, nto_procfs_target_native)
(nto_procfs_target_procfs): New classes.
(procfs_open_1, procfs_thread_alive, procfs_update_thread_list)
(procfs_files_info, procfs_pid_to_exec_file, procfs_attach)
(procfs_post_attach, procfs_wait, procfs_fetch_registers)
(procfs_xfer_partial, procfs_detach, procfs_insert_breakpoint)
(procfs_remove_breakpoint, procfs_insert_hw_breakpoint)
(procfs_remove_hw_breakpoint, procfs_resume)
(procfs_mourn_inferior, procfs_create_inferior, procfs_interrupt)
(procfs_kill_inferior, procfs_store_registers)
(procfs_pass_signals, procfs_pid_to_str, procfs_can_run): Refactor
as methods of nto_procfs_target.
(nto_procfs_ops): Now an nto_procfs_target_procfs.
(nto_native_ops): Delete.
(procfs_open, procfs_native_open): Delete.
(nto_native_ops): Now an nto_procfs_target_native.
(init_procfs_targets): Adjust to C++ification.
(procfs_can_use_hw_breakpoint, procfs_remove_hw_watchpoint)
(procfs_insert_hw_watchpoint, procfs_stopped_by_watchpoint):
Refactor as methods of nto_procfs_target.
* go32-nat.c (go32_nat_target): New class.
(the_go32_nat_target): New.
(go32_attach, go32_resume, go32_wait, go32_fetch_registers)
(go32_store_registers, go32_xfer_partial, go32_files_info)
(go32_kill_inferior, go32_create_inferior, go32_mourn_inferior)
(go32_terminal_init, go32_terminal_info, go32_terminal_inferior)
(go32_terminal_ours, go32_pass_ctrlc, go32_thread_alive)
(go32_pid_to_str): Refactor as methods of go32_nat_target.
(go32_target): Delete.
(_initialize_go32_nat): Adjust to C++ification.
* gnu-nat.c (gnu_wait, gnu_resume, gnu_kill_inferior)
(gnu_mourn_inferior, gnu_create_inferior, gnu_attach, gnu_detach)
(gnu_stop, gnu_thread_alive, gnu_xfer_partial)
(gnu_find_memory_regions, gnu_pid_to_str): Refactor as methods of
gnu_nat_target.
(gnu_target): Delete.
* gnu-nat.h (gnu_target): Delete.
(gnu_nat_target): New class.
* i386-gnu-nat.c (gnu_base_target): New.
(i386_gnu_nat_target): New class.
(the_i386_gnu_nat_target): New.
(_initialize_i386gnu_nat): Adjust to C++ification.
gdb/testsuite/ChangeLog:
2018-05-02 Pedro Alves <palves@redhat.com>
* gdb.base/breakpoint-in-ro-region.exp: Adjust to to_resume and
to_log_command renames.
* gdb.base/sss-bp-on-user-bp-2.exp: Likewise.
3549 lines
100 KiB
C
3549 lines
100 KiB
C
/* Memory-access and commands for "inferior" process, for GDB.
|
||
|
||
Copyright (C) 1986-2018 Free Software Foundation, Inc.
|
||
|
||
This file is part of GDB.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
||
|
||
#include "defs.h"
|
||
#include "arch-utils.h"
|
||
#include <signal.h>
|
||
#include "symtab.h"
|
||
#include "gdbtypes.h"
|
||
#include "frame.h"
|
||
#include "inferior.h"
|
||
#include "infrun.h"
|
||
#include "environ.h"
|
||
#include "value.h"
|
||
#include "gdbcmd.h"
|
||
#include "symfile.h"
|
||
#include "gdbcore.h"
|
||
#include "target.h"
|
||
#include "language.h"
|
||
#include "objfiles.h"
|
||
#include "completer.h"
|
||
#include "ui-out.h"
|
||
#include "event-top.h"
|
||
#include "parser-defs.h"
|
||
#include "regcache.h"
|
||
#include "reggroups.h"
|
||
#include "block.h"
|
||
#include "solib.h"
|
||
#include <ctype.h>
|
||
#include "observable.h"
|
||
#include "target-descriptions.h"
|
||
#include "user-regs.h"
|
||
#include "cli/cli-decode.h"
|
||
#include "gdbthread.h"
|
||
#include "valprint.h"
|
||
#include "inline-frame.h"
|
||
#include "tracepoint.h"
|
||
#include "inf-loop.h"
|
||
#include "continuations.h"
|
||
#include "linespec.h"
|
||
#include "cli/cli-utils.h"
|
||
#include "infcall.h"
|
||
#include "thread-fsm.h"
|
||
#include "top.h"
|
||
#include "interps.h"
|
||
#include "common/gdb_optional.h"
|
||
#include "source.h"
|
||
|
||
/* Local functions: */
|
||
|
||
static void until_next_command (int);
|
||
|
||
static void step_1 (int, int, const char *);
|
||
|
||
#define ERROR_NO_INFERIOR \
|
||
if (!target_has_execution) error (_("The program is not being run."));
|
||
|
||
/* Scratch area where string containing arguments to give to the
|
||
program will be stored by 'set args'. As soon as anything is
|
||
stored, notice_args_set will move it into per-inferior storage.
|
||
Arguments are separated by spaces. Empty string (pointer to '\0')
|
||
means no args. */
|
||
|
||
static char *inferior_args_scratch;
|
||
|
||
/* Scratch area where the new cwd will be stored by 'set cwd'. */
|
||
|
||
static char *inferior_cwd_scratch;
|
||
|
||
/* Scratch area where 'set inferior-tty' will store user-provided value.
|
||
We'll immediate copy it into per-inferior storage. */
|
||
|
||
static char *inferior_io_terminal_scratch;
|
||
|
||
/* Pid of our debugged inferior, or 0 if no inferior now.
|
||
Since various parts of infrun.c test this to see whether there is a program
|
||
being debugged it should be nonzero (currently 3 is used) for remote
|
||
debugging. */
|
||
|
||
ptid_t inferior_ptid;
|
||
|
||
/* Address at which inferior stopped. */
|
||
|
||
CORE_ADDR stop_pc;
|
||
|
||
/* Nonzero if stopped due to completion of a stack dummy routine. */
|
||
|
||
enum stop_stack_kind stop_stack_dummy;
|
||
|
||
/* Nonzero if stopped due to a random (unexpected) signal in inferior
|
||
process. */
|
||
|
||
int stopped_by_random_signal;
|
||
|
||
/* See inferior.h. */
|
||
|
||
int startup_with_shell = 1;
|
||
|
||
|
||
/* Accessor routines. */
|
||
|
||
/* Set the io terminal for the current inferior. Ownership of
|
||
TERMINAL_NAME is not transferred. */
|
||
|
||
void
|
||
set_inferior_io_terminal (const char *terminal_name)
|
||
{
|
||
xfree (current_inferior ()->terminal);
|
||
|
||
if (terminal_name != NULL && *terminal_name != '\0')
|
||
current_inferior ()->terminal = xstrdup (terminal_name);
|
||
else
|
||
current_inferior ()->terminal = NULL;
|
||
}
|
||
|
||
const char *
|
||
get_inferior_io_terminal (void)
|
||
{
|
||
return current_inferior ()->terminal;
|
||
}
|
||
|
||
static void
|
||
set_inferior_tty_command (const char *args, int from_tty,
|
||
struct cmd_list_element *c)
|
||
{
|
||
/* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
|
||
Now route it to current inferior. */
|
||
set_inferior_io_terminal (inferior_io_terminal_scratch);
|
||
}
|
||
|
||
static void
|
||
show_inferior_tty_command (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
/* Note that we ignore the passed-in value in favor of computing it
|
||
directly. */
|
||
const char *inferior_io_terminal = get_inferior_io_terminal ();
|
||
|
||
if (inferior_io_terminal == NULL)
|
||
inferior_io_terminal = "";
|
||
fprintf_filtered (gdb_stdout,
|
||
_("Terminal for future runs of program being debugged "
|
||
"is \"%s\".\n"), inferior_io_terminal);
|
||
}
|
||
|
||
char *
|
||
get_inferior_args (void)
|
||
{
|
||
if (current_inferior ()->argc != 0)
|
||
{
|
||
char *n;
|
||
|
||
n = construct_inferior_arguments (current_inferior ()->argc,
|
||
current_inferior ()->argv);
|
||
set_inferior_args (n);
|
||
xfree (n);
|
||
}
|
||
|
||
if (current_inferior ()->args == NULL)
|
||
current_inferior ()->args = xstrdup ("");
|
||
|
||
return current_inferior ()->args;
|
||
}
|
||
|
||
/* Set the arguments for the current inferior. Ownership of
|
||
NEWARGS is not transferred. */
|
||
|
||
void
|
||
set_inferior_args (const char *newargs)
|
||
{
|
||
xfree (current_inferior ()->args);
|
||
current_inferior ()->args = newargs ? xstrdup (newargs) : NULL;
|
||
current_inferior ()->argc = 0;
|
||
current_inferior ()->argv = 0;
|
||
}
|
||
|
||
void
|
||
set_inferior_args_vector (int argc, char **argv)
|
||
{
|
||
current_inferior ()->argc = argc;
|
||
current_inferior ()->argv = argv;
|
||
}
|
||
|
||
/* Notice when `set args' is run. */
|
||
|
||
static void
|
||
set_args_command (const char *args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
/* CLI has assigned the user-provided value to inferior_args_scratch.
|
||
Now route it to current inferior. */
|
||
set_inferior_args (inferior_args_scratch);
|
||
}
|
||
|
||
/* Notice when `show args' is run. */
|
||
|
||
static void
|
||
show_args_command (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
/* Note that we ignore the passed-in value in favor of computing it
|
||
directly. */
|
||
deprecated_show_value_hack (file, from_tty, c, get_inferior_args ());
|
||
}
|
||
|
||
/* See common/common-inferior.h. */
|
||
|
||
void
|
||
set_inferior_cwd (const char *cwd)
|
||
{
|
||
struct inferior *inf = current_inferior ();
|
||
|
||
gdb_assert (inf != NULL);
|
||
|
||
if (cwd == NULL)
|
||
inf->cwd.reset ();
|
||
else
|
||
inf->cwd.reset (xstrdup (cwd));
|
||
}
|
||
|
||
/* See common/common-inferior.h. */
|
||
|
||
const char *
|
||
get_inferior_cwd ()
|
||
{
|
||
return current_inferior ()->cwd.get ();
|
||
}
|
||
|
||
/* Handle the 'set cwd' command. */
|
||
|
||
static void
|
||
set_cwd_command (const char *args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
if (*inferior_cwd_scratch == '\0')
|
||
set_inferior_cwd (NULL);
|
||
else
|
||
set_inferior_cwd (inferior_cwd_scratch);
|
||
}
|
||
|
||
/* Handle the 'show cwd' command. */
|
||
|
||
static void
|
||
show_cwd_command (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
const char *cwd = get_inferior_cwd ();
|
||
|
||
if (cwd == NULL)
|
||
fprintf_filtered (gdb_stdout,
|
||
_("\
|
||
You have not set the inferior's current working directory.\n\
|
||
The inferior will inherit GDB's cwd if native debugging, or the remote\n\
|
||
server's cwd if remote debugging.\n"));
|
||
else
|
||
fprintf_filtered (gdb_stdout,
|
||
_("Current working directory that will be used "
|
||
"when starting the inferior is \"%s\".\n"), cwd);
|
||
}
|
||
|
||
|
||
/* Compute command-line string given argument vector. This does the
|
||
same shell processing as fork_inferior. */
|
||
|
||
char *
|
||
construct_inferior_arguments (int argc, char **argv)
|
||
{
|
||
char *result;
|
||
|
||
if (startup_with_shell)
|
||
{
|
||
#ifdef __MINGW32__
|
||
/* This holds all the characters considered special to the
|
||
Windows shells. */
|
||
static const char special[] = "\"!&*|[]{}<>?`~^=;, \t\n";
|
||
static const char quote = '"';
|
||
#else
|
||
/* This holds all the characters considered special to the
|
||
typical Unix shells. We include `^' because the SunOS
|
||
/bin/sh treats it as a synonym for `|'. */
|
||
static const char special[] = "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
|
||
static const char quote = '\'';
|
||
#endif
|
||
int i;
|
||
int length = 0;
|
||
char *out, *cp;
|
||
|
||
/* We over-compute the size. It shouldn't matter. */
|
||
for (i = 0; i < argc; ++i)
|
||
length += 3 * strlen (argv[i]) + 1 + 2 * (argv[i][0] == '\0');
|
||
|
||
result = (char *) xmalloc (length);
|
||
out = result;
|
||
|
||
for (i = 0; i < argc; ++i)
|
||
{
|
||
if (i > 0)
|
||
*out++ = ' ';
|
||
|
||
/* Need to handle empty arguments specially. */
|
||
if (argv[i][0] == '\0')
|
||
{
|
||
*out++ = quote;
|
||
*out++ = quote;
|
||
}
|
||
else
|
||
{
|
||
#ifdef __MINGW32__
|
||
int quoted = 0;
|
||
|
||
if (strpbrk (argv[i], special))
|
||
{
|
||
quoted = 1;
|
||
*out++ = quote;
|
||
}
|
||
#endif
|
||
for (cp = argv[i]; *cp; ++cp)
|
||
{
|
||
if (*cp == '\n')
|
||
{
|
||
/* A newline cannot be quoted with a backslash (it
|
||
just disappears), only by putting it inside
|
||
quotes. */
|
||
*out++ = quote;
|
||
*out++ = '\n';
|
||
*out++ = quote;
|
||
}
|
||
else
|
||
{
|
||
#ifdef __MINGW32__
|
||
if (*cp == quote)
|
||
#else
|
||
if (strchr (special, *cp) != NULL)
|
||
#endif
|
||
*out++ = '\\';
|
||
*out++ = *cp;
|
||
}
|
||
}
|
||
#ifdef __MINGW32__
|
||
if (quoted)
|
||
*out++ = quote;
|
||
#endif
|
||
}
|
||
}
|
||
*out = '\0';
|
||
}
|
||
else
|
||
{
|
||
/* In this case we can't handle arguments that contain spaces,
|
||
tabs, or newlines -- see breakup_args(). */
|
||
int i;
|
||
int length = 0;
|
||
|
||
for (i = 0; i < argc; ++i)
|
||
{
|
||
char *cp = strchr (argv[i], ' ');
|
||
if (cp == NULL)
|
||
cp = strchr (argv[i], '\t');
|
||
if (cp == NULL)
|
||
cp = strchr (argv[i], '\n');
|
||
if (cp != NULL)
|
||
error (_("can't handle command-line "
|
||
"argument containing whitespace"));
|
||
length += strlen (argv[i]) + 1;
|
||
}
|
||
|
||
result = (char *) xmalloc (length);
|
||
result[0] = '\0';
|
||
for (i = 0; i < argc; ++i)
|
||
{
|
||
if (i > 0)
|
||
strcat (result, " ");
|
||
strcat (result, argv[i]);
|
||
}
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
|
||
/* This function strips the '&' character (indicating background
|
||
execution) that is added as *the last* of the arguments ARGS of a
|
||
command. A copy of the incoming ARGS without the '&' is returned,
|
||
unless the resulting string after stripping is empty, in which case
|
||
NULL is returned. *BG_CHAR_P is an output boolean that indicates
|
||
whether the '&' character was found. */
|
||
|
||
static gdb::unique_xmalloc_ptr<char>
|
||
strip_bg_char (const char *args, int *bg_char_p)
|
||
{
|
||
const char *p;
|
||
|
||
if (args == NULL || *args == '\0')
|
||
{
|
||
*bg_char_p = 0;
|
||
return NULL;
|
||
}
|
||
|
||
p = args + strlen (args);
|
||
if (p[-1] == '&')
|
||
{
|
||
p--;
|
||
while (p > args && isspace (p[-1]))
|
||
p--;
|
||
|
||
*bg_char_p = 1;
|
||
if (p != args)
|
||
return gdb::unique_xmalloc_ptr<char>
|
||
(savestring (args, p - args));
|
||
else
|
||
return gdb::unique_xmalloc_ptr<char> (nullptr);
|
||
}
|
||
|
||
*bg_char_p = 0;
|
||
return gdb::unique_xmalloc_ptr<char> (xstrdup (args));
|
||
}
|
||
|
||
/* Common actions to take after creating any sort of inferior, by any
|
||
means (running, attaching, connecting, et cetera). The target
|
||
should be stopped. */
|
||
|
||
void
|
||
post_create_inferior (struct target_ops *target, int from_tty)
|
||
{
|
||
|
||
/* Be sure we own the terminal in case write operations are performed. */
|
||
target_terminal::ours_for_output ();
|
||
|
||
/* If the target hasn't taken care of this already, do it now.
|
||
Targets which need to access registers during to_open,
|
||
to_create_inferior, or to_attach should do it earlier; but many
|
||
don't need to. */
|
||
target_find_description ();
|
||
|
||
/* Now that we know the register layout, retrieve current PC. But
|
||
if the PC is unavailable (e.g., we're opening a core file with
|
||
missing registers info), ignore it. */
|
||
stop_pc = 0;
|
||
TRY
|
||
{
|
||
stop_pc = regcache_read_pc (get_current_regcache ());
|
||
}
|
||
CATCH (ex, RETURN_MASK_ERROR)
|
||
{
|
||
if (ex.error != NOT_AVAILABLE_ERROR)
|
||
throw_exception (ex);
|
||
}
|
||
END_CATCH
|
||
|
||
if (exec_bfd)
|
||
{
|
||
const unsigned solib_add_generation
|
||
= current_program_space->solib_add_generation;
|
||
|
||
/* Create the hooks to handle shared library load and unload
|
||
events. */
|
||
solib_create_inferior_hook (from_tty);
|
||
|
||
if (current_program_space->solib_add_generation == solib_add_generation)
|
||
{
|
||
/* The platform-specific hook should load initial shared libraries,
|
||
but didn't. FROM_TTY will be incorrectly 0 but such solib
|
||
targets should be fixed anyway. Call it only after the solib
|
||
target has been initialized by solib_create_inferior_hook. */
|
||
|
||
if (info_verbose)
|
||
warning (_("platform-specific solib_create_inferior_hook did "
|
||
"not load initial shared libraries."));
|
||
|
||
/* If the solist is global across processes, there's no need to
|
||
refetch it here. */
|
||
if (!gdbarch_has_global_solist (target_gdbarch ()))
|
||
solib_add (NULL, 0, auto_solib_add);
|
||
}
|
||
}
|
||
|
||
/* If the user sets watchpoints before execution having started,
|
||
then she gets software watchpoints, because GDB can't know which
|
||
target will end up being pushed, or if it supports hardware
|
||
watchpoints or not. breakpoint_re_set takes care of promoting
|
||
watchpoints to hardware watchpoints if possible, however, if this
|
||
new inferior doesn't load shared libraries or we don't pull in
|
||
symbols from any other source on this target/arch,
|
||
breakpoint_re_set is never called. Call it now so that software
|
||
watchpoints get a chance to be promoted to hardware watchpoints
|
||
if the now pushed target supports hardware watchpoints. */
|
||
breakpoint_re_set ();
|
||
|
||
gdb::observers::inferior_created.notify (target, from_tty);
|
||
}
|
||
|
||
/* Kill the inferior if already running. This function is designed
|
||
to be called when we are about to start the execution of the program
|
||
from the beginning. Ask the user to confirm that he wants to restart
|
||
the program being debugged when FROM_TTY is non-null. */
|
||
|
||
static void
|
||
kill_if_already_running (int from_tty)
|
||
{
|
||
if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution)
|
||
{
|
||
/* Bail out before killing the program if we will not be able to
|
||
restart it. */
|
||
target_require_runnable ();
|
||
|
||
if (from_tty
|
||
&& !query (_("The program being debugged has been started already.\n\
|
||
Start it from the beginning? ")))
|
||
error (_("Program not restarted."));
|
||
target_kill ();
|
||
}
|
||
}
|
||
|
||
/* See inferior.h. */
|
||
|
||
void
|
||
prepare_execution_command (struct target_ops *target, int background)
|
||
{
|
||
/* If we get a request for running in the bg but the target
|
||
doesn't support it, error out. */
|
||
if (background && !target->can_async_p ())
|
||
error (_("Asynchronous execution not supported on this target."));
|
||
|
||
if (!background)
|
||
{
|
||
/* If we get a request for running in the fg, then we need to
|
||
simulate synchronous (fg) execution. Note no cleanup is
|
||
necessary for this. stdin is re-enabled whenever an error
|
||
reaches the top level. */
|
||
all_uis_on_sync_execution_starting ();
|
||
}
|
||
}
|
||
|
||
/* Determine how the new inferior will behave. */
|
||
|
||
enum run_how
|
||
{
|
||
/* Run program without any explicit stop during startup. */
|
||
RUN_NORMAL,
|
||
|
||
/* Stop at the beginning of the program's main function. */
|
||
RUN_STOP_AT_MAIN,
|
||
|
||
/* Stop at the first instruction of the program. */
|
||
RUN_STOP_AT_FIRST_INSN
|
||
};
|
||
|
||
/* Implement the "run" command. Force a stop during program start if
|
||
requested by RUN_HOW. */
|
||
|
||
static void
|
||
run_command_1 (const char *args, int from_tty, enum run_how run_how)
|
||
{
|
||
const char *exec_file;
|
||
struct ui_out *uiout = current_uiout;
|
||
struct target_ops *run_target;
|
||
int async_exec;
|
||
|
||
dont_repeat ();
|
||
|
||
kill_if_already_running (from_tty);
|
||
|
||
init_wait_for_inferior ();
|
||
clear_breakpoint_hit_counts ();
|
||
|
||
/* Clean up any leftovers from other runs. Some other things from
|
||
this function should probably be moved into target_pre_inferior. */
|
||
target_pre_inferior (from_tty);
|
||
|
||
/* The comment here used to read, "The exec file is re-read every
|
||
time we do a generic_mourn_inferior, so we just have to worry
|
||
about the symbol file." The `generic_mourn_inferior' function
|
||
gets called whenever the program exits. However, suppose the
|
||
program exits, and *then* the executable file changes? We need
|
||
to check again here. Since reopen_exec_file doesn't do anything
|
||
if the timestamp hasn't changed, I don't see the harm. */
|
||
reopen_exec_file ();
|
||
reread_symbols ();
|
||
|
||
gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec);
|
||
args = stripped.get ();
|
||
|
||
/* Do validation and preparation before possibly changing anything
|
||
in the inferior. */
|
||
|
||
run_target = find_run_target ();
|
||
|
||
prepare_execution_command (run_target, async_exec);
|
||
|
||
if (non_stop && !run_target->supports_non_stop ())
|
||
error (_("The target does not support running in non-stop mode."));
|
||
|
||
/* Done. Can now set breakpoints, change inferior args, etc. */
|
||
|
||
/* Insert temporary breakpoint in main function if requested. */
|
||
if (run_how == RUN_STOP_AT_MAIN)
|
||
tbreak_command (main_name (), 0);
|
||
|
||
exec_file = get_exec_file (0);
|
||
|
||
/* We keep symbols from add-symbol-file, on the grounds that the
|
||
user might want to add some symbols before running the program
|
||
(right?). But sometimes (dynamic loading where the user manually
|
||
introduces the new symbols with add-symbol-file), the code which
|
||
the symbols describe does not persist between runs. Currently
|
||
the user has to manually nuke all symbols between runs if they
|
||
want them to go away (PR 2207). This is probably reasonable. */
|
||
|
||
/* If there were other args, beside '&', process them. */
|
||
if (args != NULL)
|
||
set_inferior_args (args);
|
||
|
||
if (from_tty)
|
||
{
|
||
uiout->field_string (NULL, "Starting program");
|
||
uiout->text (": ");
|
||
if (exec_file)
|
||
uiout->field_string ("execfile", exec_file);
|
||
uiout->spaces (1);
|
||
/* We call get_inferior_args() because we might need to compute
|
||
the value now. */
|
||
uiout->field_string ("infargs", get_inferior_args ());
|
||
uiout->text ("\n");
|
||
uiout->flush ();
|
||
}
|
||
|
||
/* We call get_inferior_args() because we might need to compute
|
||
the value now. */
|
||
run_target->create_inferior (exec_file,
|
||
std::string (get_inferior_args ()),
|
||
current_inferior ()->environment.envp (),
|
||
from_tty);
|
||
/* to_create_inferior should push the target, so after this point we
|
||
shouldn't refer to run_target again. */
|
||
run_target = NULL;
|
||
|
||
/* We're starting off a new process. When we get out of here, in
|
||
non-stop mode, finish the state of all threads of that process,
|
||
but leave other threads alone, as they may be stopped in internal
|
||
events --- the frontend shouldn't see them as stopped. In
|
||
all-stop, always finish the state of all threads, as we may be
|
||
resuming more than just the new process. */
|
||
ptid_t finish_ptid = (non_stop
|
||
? ptid_t (current_inferior ()->pid)
|
||
: minus_one_ptid);
|
||
scoped_finish_thread_state finish_state (finish_ptid);
|
||
|
||
/* Pass zero for FROM_TTY, because at this point the "run" command
|
||
has done its thing; now we are setting up the running program. */
|
||
post_create_inferior (target_stack, 0);
|
||
|
||
/* Queue a pending event so that the program stops immediately. */
|
||
if (run_how == RUN_STOP_AT_FIRST_INSN)
|
||
{
|
||
thread_info *thr = inferior_thread ();
|
||
thr->suspend.waitstatus_pending_p = 1;
|
||
thr->suspend.waitstatus.kind = TARGET_WAITKIND_STOPPED;
|
||
thr->suspend.waitstatus.value.sig = GDB_SIGNAL_0;
|
||
}
|
||
|
||
/* Start the target running. Do not use -1 continuation as it would skip
|
||
breakpoint right at the entry point. */
|
||
proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0);
|
||
|
||
/* Since there was no error, there's no need to finish the thread
|
||
states here. */
|
||
finish_state.release ();
|
||
}
|
||
|
||
static void
|
||
run_command (const char *args, int from_tty)
|
||
{
|
||
run_command_1 (args, from_tty, RUN_NORMAL);
|
||
}
|
||
|
||
/* Start the execution of the program up until the beginning of the main
|
||
program. */
|
||
|
||
static void
|
||
start_command (const char *args, int from_tty)
|
||
{
|
||
/* Some languages such as Ada need to search inside the program
|
||
minimal symbols for the location where to put the temporary
|
||
breakpoint before starting. */
|
||
if (!have_minimal_symbols ())
|
||
error (_("No symbol table loaded. Use the \"file\" command."));
|
||
|
||
/* Run the program until reaching the main procedure... */
|
||
run_command_1 (args, from_tty, RUN_STOP_AT_MAIN);
|
||
}
|
||
|
||
/* Start the execution of the program stopping at the first
|
||
instruction. */
|
||
|
||
static void
|
||
starti_command (const char *args, int from_tty)
|
||
{
|
||
run_command_1 (args, from_tty, RUN_STOP_AT_FIRST_INSN);
|
||
}
|
||
|
||
static int
|
||
proceed_thread_callback (struct thread_info *thread, void *arg)
|
||
{
|
||
/* We go through all threads individually instead of compressing
|
||
into a single target `resume_all' request, because some threads
|
||
may be stopped in internal breakpoints/events, or stopped waiting
|
||
for its turn in the displaced stepping queue (that is, they are
|
||
running && !executing). The target side has no idea about why
|
||
the thread is stopped, so a `resume_all' command would resume too
|
||
much. If/when GDB gains a way to tell the target `hold this
|
||
thread stopped until I say otherwise', then we can optimize
|
||
this. */
|
||
if (!is_stopped (thread->ptid))
|
||
return 0;
|
||
|
||
switch_to_thread (thread->ptid);
|
||
clear_proceed_status (0);
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT);
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
ensure_valid_thread (void)
|
||
{
|
||
if (ptid_equal (inferior_ptid, null_ptid)
|
||
|| is_exited (inferior_ptid))
|
||
error (_("Cannot execute this command without a live selected thread."));
|
||
}
|
||
|
||
/* If the user is looking at trace frames, any resumption of execution
|
||
is likely to mix up recorded and live target data. So simply
|
||
disallow those commands. */
|
||
|
||
static void
|
||
ensure_not_tfind_mode (void)
|
||
{
|
||
if (get_traceframe_number () >= 0)
|
||
error (_("Cannot execute this command while looking at trace frames."));
|
||
}
|
||
|
||
/* Throw an error indicating the current thread is running. */
|
||
|
||
static void
|
||
error_is_running (void)
|
||
{
|
||
error (_("Cannot execute this command while "
|
||
"the selected thread is running."));
|
||
}
|
||
|
||
/* Calls error_is_running if the current thread is running. */
|
||
|
||
static void
|
||
ensure_not_running (void)
|
||
{
|
||
if (is_running (inferior_ptid))
|
||
error_is_running ();
|
||
}
|
||
|
||
void
|
||
continue_1 (int all_threads)
|
||
{
|
||
ERROR_NO_INFERIOR;
|
||
ensure_not_tfind_mode ();
|
||
|
||
if (non_stop && all_threads)
|
||
{
|
||
/* Don't error out if the current thread is running, because
|
||
there may be other stopped threads. */
|
||
|
||
/* Backup current thread and selected frame and restore on scope
|
||
exit. */
|
||
scoped_restore_current_thread restore_thread;
|
||
|
||
iterate_over_threads (proceed_thread_callback, NULL);
|
||
|
||
if (current_ui->prompt_state == PROMPT_BLOCKED)
|
||
{
|
||
/* If all threads in the target were already running,
|
||
proceed_thread_callback ends up never calling proceed,
|
||
and so nothing calls this to put the inferior's terminal
|
||
settings in effect and remove stdin from the event loop,
|
||
which we must when running a foreground command. E.g.:
|
||
|
||
(gdb) c -a&
|
||
Continuing.
|
||
<all threads are running now>
|
||
(gdb) c -a
|
||
Continuing.
|
||
<no thread was resumed, but the inferior now owns the terminal>
|
||
*/
|
||
target_terminal::inferior ();
|
||
}
|
||
}
|
||
else
|
||
{
|
||
ensure_valid_thread ();
|
||
ensure_not_running ();
|
||
clear_proceed_status (0);
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT);
|
||
}
|
||
}
|
||
|
||
/* continue [-a] [proceed-count] [&] */
|
||
|
||
static void
|
||
continue_command (const char *args, int from_tty)
|
||
{
|
||
int async_exec;
|
||
int all_threads = 0;
|
||
|
||
ERROR_NO_INFERIOR;
|
||
|
||
/* Find out whether we must run in the background. */
|
||
gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec);
|
||
args = stripped.get ();
|
||
|
||
if (args != NULL)
|
||
{
|
||
if (startswith (args, "-a"))
|
||
{
|
||
all_threads = 1;
|
||
args += sizeof ("-a") - 1;
|
||
if (*args == '\0')
|
||
args = NULL;
|
||
}
|
||
}
|
||
|
||
if (!non_stop && all_threads)
|
||
error (_("`-a' is meaningless in all-stop mode."));
|
||
|
||
if (args != NULL && all_threads)
|
||
error (_("Can't resume all threads and specify "
|
||
"proceed count simultaneously."));
|
||
|
||
/* If we have an argument left, set proceed count of breakpoint we
|
||
stopped at. */
|
||
if (args != NULL)
|
||
{
|
||
bpstat bs = NULL;
|
||
int num, stat;
|
||
int stopped = 0;
|
||
struct thread_info *tp;
|
||
|
||
if (non_stop)
|
||
tp = find_thread_ptid (inferior_ptid);
|
||
else
|
||
{
|
||
ptid_t last_ptid;
|
||
struct target_waitstatus ws;
|
||
|
||
get_last_target_status (&last_ptid, &ws);
|
||
tp = find_thread_ptid (last_ptid);
|
||
}
|
||
if (tp != NULL)
|
||
bs = tp->control.stop_bpstat;
|
||
|
||
while ((stat = bpstat_num (&bs, &num)) != 0)
|
||
if (stat > 0)
|
||
{
|
||
set_ignore_count (num,
|
||
parse_and_eval_long (args) - 1,
|
||
from_tty);
|
||
/* set_ignore_count prints a message ending with a period.
|
||
So print two spaces before "Continuing.". */
|
||
if (from_tty)
|
||
printf_filtered (" ");
|
||
stopped = 1;
|
||
}
|
||
|
||
if (!stopped && from_tty)
|
||
{
|
||
printf_filtered
|
||
("Not stopped at any breakpoint; argument ignored.\n");
|
||
}
|
||
}
|
||
|
||
ERROR_NO_INFERIOR;
|
||
ensure_not_tfind_mode ();
|
||
|
||
if (!non_stop || !all_threads)
|
||
{
|
||
ensure_valid_thread ();
|
||
ensure_not_running ();
|
||
}
|
||
|
||
prepare_execution_command (target_stack, async_exec);
|
||
|
||
if (from_tty)
|
||
printf_filtered (_("Continuing.\n"));
|
||
|
||
continue_1 (all_threads);
|
||
}
|
||
|
||
/* Record the starting point of a "step" or "next" command. */
|
||
|
||
static void
|
||
set_step_frame (void)
|
||
{
|
||
frame_info *frame = get_current_frame ();
|
||
|
||
symtab_and_line sal = find_frame_sal (frame);
|
||
set_step_info (frame, sal);
|
||
|
||
CORE_ADDR pc = get_frame_pc (frame);
|
||
thread_info *tp = inferior_thread ();
|
||
tp->control.step_start_function = find_pc_function (pc);
|
||
}
|
||
|
||
/* Step until outside of current statement. */
|
||
|
||
static void
|
||
step_command (const char *count_string, int from_tty)
|
||
{
|
||
step_1 (0, 0, count_string);
|
||
}
|
||
|
||
/* Likewise, but skip over subroutine calls as if single instructions. */
|
||
|
||
static void
|
||
next_command (const char *count_string, int from_tty)
|
||
{
|
||
step_1 (1, 0, count_string);
|
||
}
|
||
|
||
/* Likewise, but step only one instruction. */
|
||
|
||
static void
|
||
stepi_command (const char *count_string, int from_tty)
|
||
{
|
||
step_1 (0, 1, count_string);
|
||
}
|
||
|
||
static void
|
||
nexti_command (const char *count_string, int from_tty)
|
||
{
|
||
step_1 (1, 1, count_string);
|
||
}
|
||
|
||
void
|
||
delete_longjmp_breakpoint_cleanup (void *arg)
|
||
{
|
||
int thread = * (int *) arg;
|
||
delete_longjmp_breakpoint (thread);
|
||
}
|
||
|
||
/* Data for the FSM that manages the step/next/stepi/nexti
|
||
commands. */
|
||
|
||
struct step_command_fsm
|
||
{
|
||
/* The base class. */
|
||
struct thread_fsm thread_fsm;
|
||
|
||
/* How many steps left in a "step N"-like command. */
|
||
int count;
|
||
|
||
/* If true, this is a next/nexti, otherwise a step/stepi. */
|
||
int skip_subroutines;
|
||
|
||
/* If true, this is a stepi/nexti, otherwise a step/step. */
|
||
int single_inst;
|
||
};
|
||
|
||
static void step_command_fsm_clean_up (struct thread_fsm *self,
|
||
struct thread_info *thread);
|
||
static int step_command_fsm_should_stop (struct thread_fsm *self,
|
||
struct thread_info *thread);
|
||
static enum async_reply_reason
|
||
step_command_fsm_async_reply_reason (struct thread_fsm *self);
|
||
|
||
/* step_command_fsm's vtable. */
|
||
|
||
static struct thread_fsm_ops step_command_fsm_ops =
|
||
{
|
||
NULL,
|
||
step_command_fsm_clean_up,
|
||
step_command_fsm_should_stop,
|
||
NULL, /* return_value */
|
||
step_command_fsm_async_reply_reason,
|
||
};
|
||
|
||
/* Allocate a new step_command_fsm. */
|
||
|
||
static struct step_command_fsm *
|
||
new_step_command_fsm (struct interp *cmd_interp)
|
||
{
|
||
struct step_command_fsm *sm;
|
||
|
||
sm = XCNEW (struct step_command_fsm);
|
||
thread_fsm_ctor (&sm->thread_fsm, &step_command_fsm_ops, cmd_interp);
|
||
|
||
return sm;
|
||
}
|
||
|
||
/* Prepare for a step/next/etc. command. Any target resource
|
||
allocated here is undone in the FSM's clean_up method. */
|
||
|
||
static void
|
||
step_command_fsm_prepare (struct step_command_fsm *sm,
|
||
int skip_subroutines, int single_inst,
|
||
int count, struct thread_info *thread)
|
||
{
|
||
sm->skip_subroutines = skip_subroutines;
|
||
sm->single_inst = single_inst;
|
||
sm->count = count;
|
||
|
||
/* Leave the si command alone. */
|
||
if (!sm->single_inst || sm->skip_subroutines)
|
||
set_longjmp_breakpoint (thread, get_frame_id (get_current_frame ()));
|
||
|
||
thread->control.stepping_command = 1;
|
||
}
|
||
|
||
static int prepare_one_step (struct step_command_fsm *sm);
|
||
|
||
static void
|
||
step_1 (int skip_subroutines, int single_inst, const char *count_string)
|
||
{
|
||
int count;
|
||
int async_exec;
|
||
struct thread_info *thr;
|
||
struct step_command_fsm *step_sm;
|
||
|
||
ERROR_NO_INFERIOR;
|
||
ensure_not_tfind_mode ();
|
||
ensure_valid_thread ();
|
||
ensure_not_running ();
|
||
|
||
gdb::unique_xmalloc_ptr<char> stripped
|
||
= strip_bg_char (count_string, &async_exec);
|
||
count_string = stripped.get ();
|
||
|
||
prepare_execution_command (target_stack, async_exec);
|
||
|
||
count = count_string ? parse_and_eval_long (count_string) : 1;
|
||
|
||
clear_proceed_status (1);
|
||
|
||
/* Setup the execution command state machine to handle all the COUNT
|
||
steps. */
|
||
thr = inferior_thread ();
|
||
step_sm = new_step_command_fsm (command_interp ());
|
||
thr->thread_fsm = &step_sm->thread_fsm;
|
||
|
||
step_command_fsm_prepare (step_sm, skip_subroutines,
|
||
single_inst, count, thr);
|
||
|
||
/* Do only one step for now, before returning control to the event
|
||
loop. Let the continuation figure out how many other steps we
|
||
need to do, and handle them one at the time, through
|
||
step_once. */
|
||
if (!prepare_one_step (step_sm))
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT);
|
||
else
|
||
{
|
||
int proceeded;
|
||
|
||
/* Stepped into an inline frame. Pretend that we've
|
||
stopped. */
|
||
thread_fsm_clean_up (thr->thread_fsm, thr);
|
||
proceeded = normal_stop ();
|
||
if (!proceeded)
|
||
inferior_event_handler (INF_EXEC_COMPLETE, NULL);
|
||
all_uis_check_sync_execution_done ();
|
||
}
|
||
}
|
||
|
||
/* Implementation of the 'should_stop' FSM method for stepping
|
||
commands. Called after we are done with one step operation, to
|
||
check whether we need to step again, before we print the prompt and
|
||
return control to the user. If count is > 1, returns false, as we
|
||
will need to keep going. */
|
||
|
||
static int
|
||
step_command_fsm_should_stop (struct thread_fsm *self, struct thread_info *tp)
|
||
{
|
||
struct step_command_fsm *sm = (struct step_command_fsm *) self;
|
||
|
||
if (tp->control.stop_step)
|
||
{
|
||
/* There are more steps to make, and we did stop due to
|
||
ending a stepping range. Do another step. */
|
||
if (--sm->count > 0)
|
||
return prepare_one_step (sm);
|
||
|
||
thread_fsm_set_finished (self);
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Implementation of the 'clean_up' FSM method for stepping commands. */
|
||
|
||
static void
|
||
step_command_fsm_clean_up (struct thread_fsm *self, struct thread_info *thread)
|
||
{
|
||
struct step_command_fsm *sm = (struct step_command_fsm *) self;
|
||
|
||
if (!sm->single_inst || sm->skip_subroutines)
|
||
delete_longjmp_breakpoint (thread->global_num);
|
||
}
|
||
|
||
/* Implementation of the 'async_reply_reason' FSM method for stepping
|
||
commands. */
|
||
|
||
static enum async_reply_reason
|
||
step_command_fsm_async_reply_reason (struct thread_fsm *self)
|
||
{
|
||
return EXEC_ASYNC_END_STEPPING_RANGE;
|
||
}
|
||
|
||
/* Prepare for one step in "step N". The actual target resumption is
|
||
done by the caller. Return true if we're done and should thus
|
||
report a stop to the user. Returns false if the target needs to be
|
||
resumed. */
|
||
|
||
static int
|
||
prepare_one_step (struct step_command_fsm *sm)
|
||
{
|
||
if (sm->count > 0)
|
||
{
|
||
struct frame_info *frame = get_current_frame ();
|
||
|
||
/* Don't assume THREAD is a valid thread id. It is set to -1 if
|
||
the longjmp breakpoint was not required. Use the
|
||
INFERIOR_PTID thread instead, which is the same thread when
|
||
THREAD is set. */
|
||
struct thread_info *tp = inferior_thread ();
|
||
|
||
set_step_frame ();
|
||
|
||
if (!sm->single_inst)
|
||
{
|
||
CORE_ADDR pc;
|
||
|
||
/* Step at an inlined function behaves like "down". */
|
||
if (!sm->skip_subroutines
|
||
&& inline_skipped_frames (inferior_ptid))
|
||
{
|
||
ptid_t resume_ptid;
|
||
|
||
/* Pretend that we've ran. */
|
||
resume_ptid = user_visible_resume_ptid (1);
|
||
set_running (resume_ptid, 1);
|
||
|
||
step_into_inline_frame (inferior_ptid);
|
||
sm->count--;
|
||
return prepare_one_step (sm);
|
||
}
|
||
|
||
pc = get_frame_pc (frame);
|
||
find_pc_line_pc_range (pc,
|
||
&tp->control.step_range_start,
|
||
&tp->control.step_range_end);
|
||
|
||
tp->control.may_range_step = 1;
|
||
|
||
/* If we have no line info, switch to stepi mode. */
|
||
if (tp->control.step_range_end == 0 && step_stop_if_no_debug)
|
||
{
|
||
tp->control.step_range_start = tp->control.step_range_end = 1;
|
||
tp->control.may_range_step = 0;
|
||
}
|
||
else if (tp->control.step_range_end == 0)
|
||
{
|
||
const char *name;
|
||
|
||
if (find_pc_partial_function (pc, &name,
|
||
&tp->control.step_range_start,
|
||
&tp->control.step_range_end) == 0)
|
||
error (_("Cannot find bounds of current function"));
|
||
|
||
target_terminal::ours_for_output ();
|
||
printf_filtered (_("Single stepping until exit from function %s,"
|
||
"\nwhich has no line number information.\n"),
|
||
name);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Say we are stepping, but stop after one insn whatever it does. */
|
||
tp->control.step_range_start = tp->control.step_range_end = 1;
|
||
if (!sm->skip_subroutines)
|
||
/* It is stepi.
|
||
Don't step over function calls, not even to functions lacking
|
||
line numbers. */
|
||
tp->control.step_over_calls = STEP_OVER_NONE;
|
||
}
|
||
|
||
if (sm->skip_subroutines)
|
||
tp->control.step_over_calls = STEP_OVER_ALL;
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Done. */
|
||
thread_fsm_set_finished (&sm->thread_fsm);
|
||
return 1;
|
||
}
|
||
|
||
|
||
/* Continue program at specified address. */
|
||
|
||
static void
|
||
jump_command (const char *arg, int from_tty)
|
||
{
|
||
struct gdbarch *gdbarch = get_current_arch ();
|
||
CORE_ADDR addr;
|
||
struct symbol *fn;
|
||
struct symbol *sfn;
|
||
int async_exec;
|
||
|
||
ERROR_NO_INFERIOR;
|
||
ensure_not_tfind_mode ();
|
||
ensure_valid_thread ();
|
||
ensure_not_running ();
|
||
|
||
/* Find out whether we must run in the background. */
|
||
gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec);
|
||
arg = stripped.get ();
|
||
|
||
prepare_execution_command (target_stack, async_exec);
|
||
|
||
if (!arg)
|
||
error_no_arg (_("starting address"));
|
||
|
||
std::vector<symtab_and_line> sals
|
||
= decode_line_with_last_displayed (arg, DECODE_LINE_FUNFIRSTLINE);
|
||
if (sals.size () != 1)
|
||
error (_("Unreasonable jump request"));
|
||
|
||
symtab_and_line &sal = sals[0];
|
||
|
||
if (sal.symtab == 0 && sal.pc == 0)
|
||
error (_("No source file has been specified."));
|
||
|
||
resolve_sal_pc (&sal); /* May error out. */
|
||
|
||
/* See if we are trying to jump to another function. */
|
||
fn = get_frame_function (get_current_frame ());
|
||
sfn = find_pc_function (sal.pc);
|
||
if (fn != NULL && sfn != fn)
|
||
{
|
||
if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line,
|
||
SYMBOL_PRINT_NAME (fn)))
|
||
{
|
||
error (_("Not confirmed."));
|
||
/* NOTREACHED */
|
||
}
|
||
}
|
||
|
||
if (sfn != NULL)
|
||
{
|
||
struct obj_section *section;
|
||
|
||
fixup_symbol_section (sfn, 0);
|
||
section = SYMBOL_OBJ_SECTION (symbol_objfile (sfn), sfn);
|
||
if (section_is_overlay (section)
|
||
&& !section_is_mapped (section))
|
||
{
|
||
if (!query (_("WARNING!!! Destination is in "
|
||
"unmapped overlay! Jump anyway? ")))
|
||
{
|
||
error (_("Not confirmed."));
|
||
/* NOTREACHED */
|
||
}
|
||
}
|
||
}
|
||
|
||
addr = sal.pc;
|
||
|
||
if (from_tty)
|
||
{
|
||
printf_filtered (_("Continuing at "));
|
||
fputs_filtered (paddress (gdbarch, addr), gdb_stdout);
|
||
printf_filtered (".\n");
|
||
}
|
||
|
||
clear_proceed_status (0);
|
||
proceed (addr, GDB_SIGNAL_0);
|
||
}
|
||
|
||
/* Continue program giving it specified signal. */
|
||
|
||
static void
|
||
signal_command (const char *signum_exp, int from_tty)
|
||
{
|
||
enum gdb_signal oursig;
|
||
int async_exec;
|
||
|
||
dont_repeat (); /* Too dangerous. */
|
||
ERROR_NO_INFERIOR;
|
||
ensure_not_tfind_mode ();
|
||
ensure_valid_thread ();
|
||
ensure_not_running ();
|
||
|
||
/* Find out whether we must run in the background. */
|
||
gdb::unique_xmalloc_ptr<char> stripped
|
||
= strip_bg_char (signum_exp, &async_exec);
|
||
signum_exp = stripped.get ();
|
||
|
||
prepare_execution_command (target_stack, async_exec);
|
||
|
||
if (!signum_exp)
|
||
error_no_arg (_("signal number"));
|
||
|
||
/* It would be even slicker to make signal names be valid expressions,
|
||
(the type could be "enum $signal" or some such), then the user could
|
||
assign them to convenience variables. */
|
||
oursig = gdb_signal_from_name (signum_exp);
|
||
|
||
if (oursig == GDB_SIGNAL_UNKNOWN)
|
||
{
|
||
/* No, try numeric. */
|
||
int num = parse_and_eval_long (signum_exp);
|
||
|
||
if (num == 0)
|
||
oursig = GDB_SIGNAL_0;
|
||
else
|
||
oursig = gdb_signal_from_command (num);
|
||
}
|
||
|
||
/* Look for threads other than the current that this command ends up
|
||
resuming too (due to schedlock off), and warn if they'll get a
|
||
signal delivered. "signal 0" is used to suppress a previous
|
||
signal, but if the current thread is no longer the one that got
|
||
the signal, then the user is potentially suppressing the signal
|
||
of the wrong thread. */
|
||
if (!non_stop)
|
||
{
|
||
struct thread_info *tp;
|
||
ptid_t resume_ptid;
|
||
int must_confirm = 0;
|
||
|
||
/* This indicates what will be resumed. Either a single thread,
|
||
a whole process, or all threads of all processes. */
|
||
resume_ptid = user_visible_resume_ptid (0);
|
||
|
||
ALL_NON_EXITED_THREADS (tp)
|
||
{
|
||
if (ptid_equal (tp->ptid, inferior_ptid))
|
||
continue;
|
||
if (!ptid_match (tp->ptid, resume_ptid))
|
||
continue;
|
||
|
||
if (tp->suspend.stop_signal != GDB_SIGNAL_0
|
||
&& signal_pass_state (tp->suspend.stop_signal))
|
||
{
|
||
if (!must_confirm)
|
||
printf_unfiltered (_("Note:\n"));
|
||
printf_unfiltered (_(" Thread %s previously stopped with signal %s, %s.\n"),
|
||
print_thread_id (tp),
|
||
gdb_signal_to_name (tp->suspend.stop_signal),
|
||
gdb_signal_to_string (tp->suspend.stop_signal));
|
||
must_confirm = 1;
|
||
}
|
||
}
|
||
|
||
if (must_confirm
|
||
&& !query (_("Continuing thread %s (the current thread) with specified signal will\n"
|
||
"still deliver the signals noted above to their respective threads.\n"
|
||
"Continue anyway? "),
|
||
print_thread_id (inferior_thread ())))
|
||
error (_("Not confirmed."));
|
||
}
|
||
|
||
if (from_tty)
|
||
{
|
||
if (oursig == GDB_SIGNAL_0)
|
||
printf_filtered (_("Continuing with no signal.\n"));
|
||
else
|
||
printf_filtered (_("Continuing with signal %s.\n"),
|
||
gdb_signal_to_name (oursig));
|
||
}
|
||
|
||
clear_proceed_status (0);
|
||
proceed ((CORE_ADDR) -1, oursig);
|
||
}
|
||
|
||
/* Queue a signal to be delivered to the current thread. */
|
||
|
||
static void
|
||
queue_signal_command (const char *signum_exp, int from_tty)
|
||
{
|
||
enum gdb_signal oursig;
|
||
struct thread_info *tp;
|
||
|
||
ERROR_NO_INFERIOR;
|
||
ensure_not_tfind_mode ();
|
||
ensure_valid_thread ();
|
||
ensure_not_running ();
|
||
|
||
if (signum_exp == NULL)
|
||
error_no_arg (_("signal number"));
|
||
|
||
/* It would be even slicker to make signal names be valid expressions,
|
||
(the type could be "enum $signal" or some such), then the user could
|
||
assign them to convenience variables. */
|
||
oursig = gdb_signal_from_name (signum_exp);
|
||
|
||
if (oursig == GDB_SIGNAL_UNKNOWN)
|
||
{
|
||
/* No, try numeric. */
|
||
int num = parse_and_eval_long (signum_exp);
|
||
|
||
if (num == 0)
|
||
oursig = GDB_SIGNAL_0;
|
||
else
|
||
oursig = gdb_signal_from_command (num);
|
||
}
|
||
|
||
if (oursig != GDB_SIGNAL_0
|
||
&& !signal_pass_state (oursig))
|
||
error (_("Signal handling set to not pass this signal to the program."));
|
||
|
||
tp = inferior_thread ();
|
||
tp->suspend.stop_signal = oursig;
|
||
}
|
||
|
||
/* Data for the FSM that manages the until (with no argument)
|
||
command. */
|
||
|
||
struct until_next_fsm
|
||
{
|
||
/* The base class. */
|
||
struct thread_fsm thread_fsm;
|
||
|
||
/* The thread that as current when the command was executed. */
|
||
int thread;
|
||
};
|
||
|
||
static int until_next_fsm_should_stop (struct thread_fsm *self,
|
||
struct thread_info *thread);
|
||
static void until_next_fsm_clean_up (struct thread_fsm *self,
|
||
struct thread_info *thread);
|
||
static enum async_reply_reason
|
||
until_next_fsm_async_reply_reason (struct thread_fsm *self);
|
||
|
||
/* until_next_fsm's vtable. */
|
||
|
||
static struct thread_fsm_ops until_next_fsm_ops =
|
||
{
|
||
NULL, /* dtor */
|
||
until_next_fsm_clean_up,
|
||
until_next_fsm_should_stop,
|
||
NULL, /* return_value */
|
||
until_next_fsm_async_reply_reason,
|
||
};
|
||
|
||
/* Allocate a new until_next_fsm. */
|
||
|
||
static struct until_next_fsm *
|
||
new_until_next_fsm (struct interp *cmd_interp, int thread)
|
||
{
|
||
struct until_next_fsm *sm;
|
||
|
||
sm = XCNEW (struct until_next_fsm);
|
||
thread_fsm_ctor (&sm->thread_fsm, &until_next_fsm_ops, cmd_interp);
|
||
|
||
sm->thread = thread;
|
||
|
||
return sm;
|
||
}
|
||
|
||
/* Implementation of the 'should_stop' FSM method for the until (with
|
||
no arg) command. */
|
||
|
||
static int
|
||
until_next_fsm_should_stop (struct thread_fsm *self,
|
||
struct thread_info *tp)
|
||
{
|
||
if (tp->control.stop_step)
|
||
thread_fsm_set_finished (self);
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Implementation of the 'clean_up' FSM method for the until (with no
|
||
arg) command. */
|
||
|
||
static void
|
||
until_next_fsm_clean_up (struct thread_fsm *self, struct thread_info *thread)
|
||
{
|
||
delete_longjmp_breakpoint (thread->global_num);
|
||
}
|
||
|
||
/* Implementation of the 'async_reply_reason' FSM method for the until
|
||
(with no arg) command. */
|
||
|
||
static enum async_reply_reason
|
||
until_next_fsm_async_reply_reason (struct thread_fsm *self)
|
||
{
|
||
return EXEC_ASYNC_END_STEPPING_RANGE;
|
||
}
|
||
|
||
/* Proceed until we reach a different source line with pc greater than
|
||
our current one or exit the function. We skip calls in both cases.
|
||
|
||
Note that eventually this command should probably be changed so
|
||
that only source lines are printed out when we hit the breakpoint
|
||
we set. This may involve changes to wait_for_inferior and the
|
||
proceed status code. */
|
||
|
||
static void
|
||
until_next_command (int from_tty)
|
||
{
|
||
struct frame_info *frame;
|
||
CORE_ADDR pc;
|
||
struct symbol *func;
|
||
struct symtab_and_line sal;
|
||
struct thread_info *tp = inferior_thread ();
|
||
int thread = tp->global_num;
|
||
struct cleanup *old_chain;
|
||
struct until_next_fsm *sm;
|
||
|
||
clear_proceed_status (0);
|
||
set_step_frame ();
|
||
|
||
frame = get_current_frame ();
|
||
|
||
/* Step until either exited from this function or greater
|
||
than the current line (if in symbolic section) or pc (if
|
||
not). */
|
||
|
||
pc = get_frame_pc (frame);
|
||
func = find_pc_function (pc);
|
||
|
||
if (!func)
|
||
{
|
||
struct bound_minimal_symbol msymbol = lookup_minimal_symbol_by_pc (pc);
|
||
|
||
if (msymbol.minsym == NULL)
|
||
error (_("Execution is not within a known function."));
|
||
|
||
tp->control.step_range_start = BMSYMBOL_VALUE_ADDRESS (msymbol);
|
||
/* The upper-bound of step_range is exclusive. In order to make PC
|
||
within the range, set the step_range_end with PC + 1. */
|
||
tp->control.step_range_end = pc + 1;
|
||
}
|
||
else
|
||
{
|
||
sal = find_pc_line (pc, 0);
|
||
|
||
tp->control.step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func));
|
||
tp->control.step_range_end = sal.end;
|
||
}
|
||
tp->control.may_range_step = 1;
|
||
|
||
tp->control.step_over_calls = STEP_OVER_ALL;
|
||
|
||
set_longjmp_breakpoint (tp, get_frame_id (frame));
|
||
old_chain = make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
|
||
|
||
sm = new_until_next_fsm (command_interp (), tp->global_num);
|
||
tp->thread_fsm = &sm->thread_fsm;
|
||
discard_cleanups (old_chain);
|
||
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT);
|
||
}
|
||
|
||
static void
|
||
until_command (const char *arg, int from_tty)
|
||
{
|
||
int async_exec;
|
||
|
||
ERROR_NO_INFERIOR;
|
||
ensure_not_tfind_mode ();
|
||
ensure_valid_thread ();
|
||
ensure_not_running ();
|
||
|
||
/* Find out whether we must run in the background. */
|
||
gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec);
|
||
arg = stripped.get ();
|
||
|
||
prepare_execution_command (target_stack, async_exec);
|
||
|
||
if (arg)
|
||
until_break_command (arg, from_tty, 0);
|
||
else
|
||
until_next_command (from_tty);
|
||
}
|
||
|
||
static void
|
||
advance_command (const char *arg, int from_tty)
|
||
{
|
||
int async_exec;
|
||
|
||
ERROR_NO_INFERIOR;
|
||
ensure_not_tfind_mode ();
|
||
ensure_valid_thread ();
|
||
ensure_not_running ();
|
||
|
||
if (arg == NULL)
|
||
error_no_arg (_("a location"));
|
||
|
||
/* Find out whether we must run in the background. */
|
||
gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec);
|
||
arg = stripped.get ();
|
||
|
||
prepare_execution_command (target_stack, async_exec);
|
||
|
||
until_break_command (arg, from_tty, 1);
|
||
}
|
||
|
||
/* Return the value of the result of a function at the end of a 'finish'
|
||
command/BP. DTOR_DATA (if not NULL) can represent inferior registers
|
||
right after an inferior call has finished. */
|
||
|
||
struct value *
|
||
get_return_value (struct value *function, struct type *value_type)
|
||
{
|
||
regcache *stop_regs = get_current_regcache ();
|
||
struct gdbarch *gdbarch = stop_regs->arch ();
|
||
struct value *value;
|
||
|
||
value_type = check_typedef (value_type);
|
||
gdb_assert (TYPE_CODE (value_type) != TYPE_CODE_VOID);
|
||
|
||
/* FIXME: 2003-09-27: When returning from a nested inferior function
|
||
call, it's possible (with no help from the architecture vector)
|
||
to locate and return/print a "struct return" value. This is just
|
||
a more complicated case of what is already being done in the
|
||
inferior function call code. In fact, when inferior function
|
||
calls are made async, this will likely be made the norm. */
|
||
|
||
switch (gdbarch_return_value (gdbarch, function, value_type,
|
||
NULL, NULL, NULL))
|
||
{
|
||
case RETURN_VALUE_REGISTER_CONVENTION:
|
||
case RETURN_VALUE_ABI_RETURNS_ADDRESS:
|
||
case RETURN_VALUE_ABI_PRESERVES_ADDRESS:
|
||
value = allocate_value (value_type);
|
||
gdbarch_return_value (gdbarch, function, value_type, stop_regs,
|
||
value_contents_raw (value), NULL);
|
||
break;
|
||
case RETURN_VALUE_STRUCT_CONVENTION:
|
||
value = NULL;
|
||
break;
|
||
default:
|
||
internal_error (__FILE__, __LINE__, _("bad switch"));
|
||
}
|
||
|
||
return value;
|
||
}
|
||
|
||
/* The captured function return value/type and its position in the
|
||
value history. */
|
||
|
||
struct return_value_info
|
||
{
|
||
/* The captured return value. May be NULL if we weren't able to
|
||
retrieve it. See get_return_value. */
|
||
struct value *value;
|
||
|
||
/* The return type. In some cases, we'll not be able extract the
|
||
return value, but we always know the type. */
|
||
struct type *type;
|
||
|
||
/* If we captured a value, this is the value history index. */
|
||
int value_history_index;
|
||
};
|
||
|
||
/* Helper for print_return_value. */
|
||
|
||
static void
|
||
print_return_value_1 (struct ui_out *uiout, struct return_value_info *rv)
|
||
{
|
||
if (rv->value != NULL)
|
||
{
|
||
struct value_print_options opts;
|
||
|
||
/* Print it. */
|
||
uiout->text ("Value returned is ");
|
||
uiout->field_fmt ("gdb-result-var", "$%d",
|
||
rv->value_history_index);
|
||
uiout->text (" = ");
|
||
get_no_prettyformat_print_options (&opts);
|
||
|
||
string_file stb;
|
||
|
||
value_print (rv->value, &stb, &opts);
|
||
uiout->field_stream ("return-value", stb);
|
||
uiout->text ("\n");
|
||
}
|
||
else
|
||
{
|
||
std::string type_name = type_to_string (rv->type);
|
||
uiout->text ("Value returned has type: ");
|
||
uiout->field_string ("return-type", type_name.c_str ());
|
||
uiout->text (".");
|
||
uiout->text (" Cannot determine contents\n");
|
||
}
|
||
}
|
||
|
||
/* Print the result of a function at the end of a 'finish' command.
|
||
RV points at an object representing the captured return value/type
|
||
and its position in the value history. */
|
||
|
||
void
|
||
print_return_value (struct ui_out *uiout, struct return_value_info *rv)
|
||
{
|
||
if (rv->type == NULL || TYPE_CODE (rv->type) == TYPE_CODE_VOID)
|
||
return;
|
||
|
||
TRY
|
||
{
|
||
/* print_return_value_1 can throw an exception in some
|
||
circumstances. We need to catch this so that we still
|
||
delete the breakpoint. */
|
||
print_return_value_1 (uiout, rv);
|
||
}
|
||
CATCH (ex, RETURN_MASK_ALL)
|
||
{
|
||
exception_print (gdb_stdout, ex);
|
||
}
|
||
END_CATCH
|
||
}
|
||
|
||
/* Data for the FSM that manages the finish command. */
|
||
|
||
struct finish_command_fsm
|
||
{
|
||
/* The base class. */
|
||
struct thread_fsm thread_fsm;
|
||
|
||
/* The momentary breakpoint set at the function's return address in
|
||
the caller. */
|
||
struct breakpoint *breakpoint;
|
||
|
||
/* The function that we're stepping out of. */
|
||
struct symbol *function;
|
||
|
||
/* If the FSM finishes successfully, this stores the function's
|
||
return value. */
|
||
struct return_value_info return_value;
|
||
};
|
||
|
||
static int finish_command_fsm_should_stop (struct thread_fsm *self,
|
||
struct thread_info *thread);
|
||
static void finish_command_fsm_clean_up (struct thread_fsm *self,
|
||
struct thread_info *thread);
|
||
static struct return_value_info *
|
||
finish_command_fsm_return_value (struct thread_fsm *self);
|
||
static enum async_reply_reason
|
||
finish_command_fsm_async_reply_reason (struct thread_fsm *self);
|
||
|
||
/* finish_command_fsm's vtable. */
|
||
|
||
static struct thread_fsm_ops finish_command_fsm_ops =
|
||
{
|
||
NULL, /* dtor */
|
||
finish_command_fsm_clean_up,
|
||
finish_command_fsm_should_stop,
|
||
finish_command_fsm_return_value,
|
||
finish_command_fsm_async_reply_reason,
|
||
NULL, /* should_notify_stop */
|
||
};
|
||
|
||
/* Allocate a new finish_command_fsm. */
|
||
|
||
static struct finish_command_fsm *
|
||
new_finish_command_fsm (struct interp *cmd_interp)
|
||
{
|
||
struct finish_command_fsm *sm;
|
||
|
||
sm = XCNEW (struct finish_command_fsm);
|
||
thread_fsm_ctor (&sm->thread_fsm, &finish_command_fsm_ops, cmd_interp);
|
||
|
||
return sm;
|
||
}
|
||
|
||
/* Implementation of the 'should_stop' FSM method for the finish
|
||
commands. Detects whether the thread stepped out of the function
|
||
successfully, and if so, captures the function's return value and
|
||
marks the FSM finished. */
|
||
|
||
static int
|
||
finish_command_fsm_should_stop (struct thread_fsm *self,
|
||
struct thread_info *tp)
|
||
{
|
||
struct finish_command_fsm *f = (struct finish_command_fsm *) self;
|
||
struct return_value_info *rv = &f->return_value;
|
||
|
||
if (f->function != NULL
|
||
&& bpstat_find_breakpoint (tp->control.stop_bpstat,
|
||
f->breakpoint) != NULL)
|
||
{
|
||
/* We're done. */
|
||
thread_fsm_set_finished (self);
|
||
|
||
rv->type = TYPE_TARGET_TYPE (SYMBOL_TYPE (f->function));
|
||
if (rv->type == NULL)
|
||
internal_error (__FILE__, __LINE__,
|
||
_("finish_command: function has no target type"));
|
||
|
||
if (TYPE_CODE (rv->type) != TYPE_CODE_VOID)
|
||
{
|
||
struct value *func;
|
||
|
||
func = read_var_value (f->function, NULL, get_current_frame ());
|
||
rv->value = get_return_value (func, rv->type);
|
||
if (rv->value != NULL)
|
||
rv->value_history_index = record_latest_value (rv->value);
|
||
}
|
||
}
|
||
else if (tp->control.stop_step)
|
||
{
|
||
/* Finishing from an inline frame, or reverse finishing. In
|
||
either case, there's no way to retrieve the return value. */
|
||
thread_fsm_set_finished (self);
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Implementation of the 'clean_up' FSM method for the finish
|
||
commands. */
|
||
|
||
static void
|
||
finish_command_fsm_clean_up (struct thread_fsm *self,
|
||
struct thread_info *thread)
|
||
{
|
||
struct finish_command_fsm *f = (struct finish_command_fsm *) self;
|
||
|
||
if (f->breakpoint != NULL)
|
||
{
|
||
delete_breakpoint (f->breakpoint);
|
||
f->breakpoint = NULL;
|
||
}
|
||
delete_longjmp_breakpoint (thread->global_num);
|
||
}
|
||
|
||
/* Implementation of the 'return_value' FSM method for the finish
|
||
commands. */
|
||
|
||
static struct return_value_info *
|
||
finish_command_fsm_return_value (struct thread_fsm *self)
|
||
{
|
||
struct finish_command_fsm *f = (struct finish_command_fsm *) self;
|
||
|
||
return &f->return_value;
|
||
}
|
||
|
||
/* Implementation of the 'async_reply_reason' FSM method for the
|
||
finish commands. */
|
||
|
||
static enum async_reply_reason
|
||
finish_command_fsm_async_reply_reason (struct thread_fsm *self)
|
||
{
|
||
if (execution_direction == EXEC_REVERSE)
|
||
return EXEC_ASYNC_END_STEPPING_RANGE;
|
||
else
|
||
return EXEC_ASYNC_FUNCTION_FINISHED;
|
||
}
|
||
|
||
/* finish_backward -- helper function for finish_command. */
|
||
|
||
static void
|
||
finish_backward (struct finish_command_fsm *sm)
|
||
{
|
||
struct symtab_and_line sal;
|
||
struct thread_info *tp = inferior_thread ();
|
||
CORE_ADDR pc;
|
||
CORE_ADDR func_addr;
|
||
|
||
pc = get_frame_pc (get_current_frame ());
|
||
|
||
if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0)
|
||
error (_("Cannot find bounds of current function"));
|
||
|
||
sal = find_pc_line (func_addr, 0);
|
||
|
||
tp->control.proceed_to_finish = 1;
|
||
/* Special case: if we're sitting at the function entry point,
|
||
then all we need to do is take a reverse singlestep. We
|
||
don't need to set a breakpoint, and indeed it would do us
|
||
no good to do so.
|
||
|
||
Note that this can only happen at frame #0, since there's
|
||
no way that a function up the stack can have a return address
|
||
that's equal to its entry point. */
|
||
|
||
if (sal.pc != pc)
|
||
{
|
||
struct frame_info *frame = get_selected_frame (NULL);
|
||
struct gdbarch *gdbarch = get_frame_arch (frame);
|
||
|
||
/* Set a step-resume at the function's entry point. Once that's
|
||
hit, we'll do one more step backwards. */
|
||
symtab_and_line sr_sal;
|
||
sr_sal.pc = sal.pc;
|
||
sr_sal.pspace = get_frame_program_space (frame);
|
||
insert_step_resume_breakpoint_at_sal (gdbarch,
|
||
sr_sal, null_frame_id);
|
||
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT);
|
||
}
|
||
else
|
||
{
|
||
/* We're almost there -- we just need to back up by one more
|
||
single-step. */
|
||
tp->control.step_range_start = tp->control.step_range_end = 1;
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT);
|
||
}
|
||
}
|
||
|
||
/* finish_forward -- helper function for finish_command. FRAME is the
|
||
frame that called the function we're about to step out of. */
|
||
|
||
static void
|
||
finish_forward (struct finish_command_fsm *sm, struct frame_info *frame)
|
||
{
|
||
struct frame_id frame_id = get_frame_id (frame);
|
||
struct gdbarch *gdbarch = get_frame_arch (frame);
|
||
struct symtab_and_line sal;
|
||
struct thread_info *tp = inferior_thread ();
|
||
|
||
sal = find_pc_line (get_frame_pc (frame), 0);
|
||
sal.pc = get_frame_pc (frame);
|
||
|
||
sm->breakpoint = set_momentary_breakpoint (gdbarch, sal,
|
||
get_stack_frame_id (frame),
|
||
bp_finish).release ();
|
||
|
||
/* set_momentary_breakpoint invalidates FRAME. */
|
||
frame = NULL;
|
||
|
||
set_longjmp_breakpoint (tp, frame_id);
|
||
|
||
/* We want to print return value, please... */
|
||
tp->control.proceed_to_finish = 1;
|
||
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT);
|
||
}
|
||
|
||
/* Skip frames for "finish". */
|
||
|
||
static struct frame_info *
|
||
skip_finish_frames (struct frame_info *frame)
|
||
{
|
||
struct frame_info *start;
|
||
|
||
do
|
||
{
|
||
start = frame;
|
||
|
||
frame = skip_tailcall_frames (frame);
|
||
if (frame == NULL)
|
||
break;
|
||
|
||
frame = skip_unwritable_frames (frame);
|
||
if (frame == NULL)
|
||
break;
|
||
}
|
||
while (start != frame);
|
||
|
||
return frame;
|
||
}
|
||
|
||
/* "finish": Set a temporary breakpoint at the place the selected
|
||
frame will return to, then continue. */
|
||
|
||
static void
|
||
finish_command (const char *arg, int from_tty)
|
||
{
|
||
struct frame_info *frame;
|
||
int async_exec;
|
||
struct finish_command_fsm *sm;
|
||
struct thread_info *tp;
|
||
|
||
ERROR_NO_INFERIOR;
|
||
ensure_not_tfind_mode ();
|
||
ensure_valid_thread ();
|
||
ensure_not_running ();
|
||
|
||
/* Find out whether we must run in the background. */
|
||
gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec);
|
||
arg = stripped.get ();
|
||
|
||
prepare_execution_command (target_stack, async_exec);
|
||
|
||
if (arg)
|
||
error (_("The \"finish\" command does not take any arguments."));
|
||
|
||
frame = get_prev_frame (get_selected_frame (_("No selected frame.")));
|
||
if (frame == 0)
|
||
error (_("\"finish\" not meaningful in the outermost frame."));
|
||
|
||
clear_proceed_status (0);
|
||
|
||
tp = inferior_thread ();
|
||
|
||
sm = new_finish_command_fsm (command_interp ());
|
||
|
||
tp->thread_fsm = &sm->thread_fsm;
|
||
|
||
/* Finishing from an inline frame is completely different. We don't
|
||
try to show the "return value" - no way to locate it. */
|
||
if (get_frame_type (get_selected_frame (_("No selected frame.")))
|
||
== INLINE_FRAME)
|
||
{
|
||
/* Claim we are stepping in the calling frame. An empty step
|
||
range means that we will stop once we aren't in a function
|
||
called by that frame. We don't use the magic "1" value for
|
||
step_range_end, because then infrun will think this is nexti,
|
||
and not step over the rest of this inlined function call. */
|
||
set_step_info (frame, {});
|
||
tp->control.step_range_start = get_frame_pc (frame);
|
||
tp->control.step_range_end = tp->control.step_range_start;
|
||
tp->control.step_over_calls = STEP_OVER_ALL;
|
||
|
||
/* Print info on the selected frame, including level number but not
|
||
source. */
|
||
if (from_tty)
|
||
{
|
||
printf_filtered (_("Run till exit from "));
|
||
print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0);
|
||
}
|
||
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT);
|
||
return;
|
||
}
|
||
|
||
/* Find the function we will return from. */
|
||
|
||
sm->function = find_pc_function (get_frame_pc (get_selected_frame (NULL)));
|
||
|
||
/* Print info on the selected frame, including level number but not
|
||
source. */
|
||
if (from_tty)
|
||
{
|
||
if (execution_direction == EXEC_REVERSE)
|
||
printf_filtered (_("Run back to call of "));
|
||
else
|
||
{
|
||
if (sm->function != NULL && TYPE_NO_RETURN (sm->function->type)
|
||
&& !query (_("warning: Function %s does not return normally.\n"
|
||
"Try to finish anyway? "),
|
||
SYMBOL_PRINT_NAME (sm->function)))
|
||
error (_("Not confirmed."));
|
||
printf_filtered (_("Run till exit from "));
|
||
}
|
||
|
||
print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0);
|
||
}
|
||
|
||
if (execution_direction == EXEC_REVERSE)
|
||
finish_backward (sm);
|
||
else
|
||
{
|
||
frame = skip_finish_frames (frame);
|
||
|
||
if (frame == NULL)
|
||
error (_("Cannot find the caller frame."));
|
||
|
||
finish_forward (sm, frame);
|
||
}
|
||
}
|
||
|
||
|
||
static void
|
||
info_program_command (const char *args, int from_tty)
|
||
{
|
||
bpstat bs;
|
||
int num, stat;
|
||
struct thread_info *tp;
|
||
ptid_t ptid;
|
||
|
||
if (!target_has_execution)
|
||
{
|
||
printf_filtered (_("The program being debugged is not being run.\n"));
|
||
return;
|
||
}
|
||
|
||
if (non_stop)
|
||
ptid = inferior_ptid;
|
||
else
|
||
{
|
||
struct target_waitstatus ws;
|
||
|
||
get_last_target_status (&ptid, &ws);
|
||
}
|
||
|
||
if (ptid_equal (ptid, null_ptid) || is_exited (ptid))
|
||
error (_("Invalid selected thread."));
|
||
else if (is_running (ptid))
|
||
error (_("Selected thread is running."));
|
||
|
||
tp = find_thread_ptid (ptid);
|
||
bs = tp->control.stop_bpstat;
|
||
stat = bpstat_num (&bs, &num);
|
||
|
||
target_files_info ();
|
||
printf_filtered (_("Program stopped at %s.\n"),
|
||
paddress (target_gdbarch (), stop_pc));
|
||
if (tp->control.stop_step)
|
||
printf_filtered (_("It stopped after being stepped.\n"));
|
||
else if (stat != 0)
|
||
{
|
||
/* There may be several breakpoints in the same place, so this
|
||
isn't as strange as it seems. */
|
||
while (stat != 0)
|
||
{
|
||
if (stat < 0)
|
||
{
|
||
printf_filtered (_("It stopped at a breakpoint "
|
||
"that has since been deleted.\n"));
|
||
}
|
||
else
|
||
printf_filtered (_("It stopped at breakpoint %d.\n"), num);
|
||
stat = bpstat_num (&bs, &num);
|
||
}
|
||
}
|
||
else if (tp->suspend.stop_signal != GDB_SIGNAL_0)
|
||
{
|
||
printf_filtered (_("It stopped with signal %s, %s.\n"),
|
||
gdb_signal_to_name (tp->suspend.stop_signal),
|
||
gdb_signal_to_string (tp->suspend.stop_signal));
|
||
}
|
||
|
||
if (from_tty)
|
||
{
|
||
printf_filtered (_("Type \"info stack\" or \"info "
|
||
"registers\" for more information.\n"));
|
||
}
|
||
}
|
||
|
||
static void
|
||
environment_info (const char *var, int from_tty)
|
||
{
|
||
if (var)
|
||
{
|
||
const char *val = current_inferior ()->environment.get (var);
|
||
|
||
if (val)
|
||
{
|
||
puts_filtered (var);
|
||
puts_filtered (" = ");
|
||
puts_filtered (val);
|
||
puts_filtered ("\n");
|
||
}
|
||
else
|
||
{
|
||
puts_filtered ("Environment variable \"");
|
||
puts_filtered (var);
|
||
puts_filtered ("\" not defined.\n");
|
||
}
|
||
}
|
||
else
|
||
{
|
||
char **envp = current_inferior ()->environment.envp ();
|
||
|
||
for (int idx = 0; envp[idx] != NULL; ++idx)
|
||
{
|
||
puts_filtered (envp[idx]);
|
||
puts_filtered ("\n");
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
set_environment_command (const char *arg, int from_tty)
|
||
{
|
||
const char *p, *val;
|
||
int nullset = 0;
|
||
|
||
if (arg == 0)
|
||
error_no_arg (_("environment variable and value"));
|
||
|
||
/* Find seperation between variable name and value. */
|
||
p = (char *) strchr (arg, '=');
|
||
val = (char *) strchr (arg, ' ');
|
||
|
||
if (p != 0 && val != 0)
|
||
{
|
||
/* We have both a space and an equals. If the space is before the
|
||
equals, walk forward over the spaces til we see a nonspace
|
||
(possibly the equals). */
|
||
if (p > val)
|
||
while (*val == ' ')
|
||
val++;
|
||
|
||
/* Now if the = is after the char following the spaces,
|
||
take the char following the spaces. */
|
||
if (p > val)
|
||
p = val - 1;
|
||
}
|
||
else if (val != 0 && p == 0)
|
||
p = val;
|
||
|
||
if (p == arg)
|
||
error_no_arg (_("environment variable to set"));
|
||
|
||
if (p == 0 || p[1] == 0)
|
||
{
|
||
nullset = 1;
|
||
if (p == 0)
|
||
p = arg + strlen (arg); /* So that savestring below will work. */
|
||
}
|
||
else
|
||
{
|
||
/* Not setting variable value to null. */
|
||
val = p + 1;
|
||
while (*val == ' ' || *val == '\t')
|
||
val++;
|
||
}
|
||
|
||
while (p != arg && (p[-1] == ' ' || p[-1] == '\t'))
|
||
p--;
|
||
|
||
std::string var (arg, p - arg);
|
||
if (nullset)
|
||
{
|
||
printf_filtered (_("Setting environment variable "
|
||
"\"%s\" to null value.\n"),
|
||
var.c_str ());
|
||
current_inferior ()->environment.set (var.c_str (), "");
|
||
}
|
||
else
|
||
current_inferior ()->environment.set (var.c_str (), val);
|
||
}
|
||
|
||
static void
|
||
unset_environment_command (const char *var, int from_tty)
|
||
{
|
||
if (var == 0)
|
||
{
|
||
/* If there is no argument, delete all environment variables.
|
||
Ask for confirmation if reading from the terminal. */
|
||
if (!from_tty || query (_("Delete all environment variables? ")))
|
||
current_inferior ()->environment.clear ();
|
||
}
|
||
else
|
||
current_inferior ()->environment.unset (var);
|
||
}
|
||
|
||
/* Handle the execution path (PATH variable). */
|
||
|
||
static const char path_var_name[] = "PATH";
|
||
|
||
static void
|
||
path_info (const char *args, int from_tty)
|
||
{
|
||
puts_filtered ("Executable and object file path: ");
|
||
puts_filtered (current_inferior ()->environment.get (path_var_name));
|
||
puts_filtered ("\n");
|
||
}
|
||
|
||
/* Add zero or more directories to the front of the execution path. */
|
||
|
||
static void
|
||
path_command (const char *dirname, int from_tty)
|
||
{
|
||
char *exec_path;
|
||
const char *env;
|
||
|
||
dont_repeat ();
|
||
env = current_inferior ()->environment.get (path_var_name);
|
||
/* Can be null if path is not set. */
|
||
if (!env)
|
||
env = "";
|
||
exec_path = xstrdup (env);
|
||
mod_path (dirname, &exec_path);
|
||
current_inferior ()->environment.set (path_var_name, exec_path);
|
||
xfree (exec_path);
|
||
if (from_tty)
|
||
path_info ((char *) NULL, from_tty);
|
||
}
|
||
|
||
|
||
static void
|
||
pad_to_column (string_file &stream, int col)
|
||
{
|
||
/* At least one space must be printed to separate columns. */
|
||
stream.putc (' ');
|
||
const int size = stream.size ();
|
||
if (size < col)
|
||
stream.puts (n_spaces (col - size));
|
||
}
|
||
|
||
/* Print out the register NAME with value VAL, to FILE, in the default
|
||
fashion. */
|
||
|
||
static void
|
||
default_print_one_register_info (struct ui_file *file,
|
||
const char *name,
|
||
struct value *val)
|
||
{
|
||
struct type *regtype = value_type (val);
|
||
int print_raw_format;
|
||
string_file format_stream;
|
||
enum tab_stops
|
||
{
|
||
value_column_1 = 15,
|
||
/* Give enough room for "0x", 16 hex digits and two spaces in
|
||
preceding column. */
|
||
value_column_2 = value_column_1 + 2 + 16 + 2,
|
||
};
|
||
|
||
format_stream.puts (name);
|
||
pad_to_column (format_stream, value_column_1);
|
||
|
||
print_raw_format = (value_entirely_available (val)
|
||
&& !value_optimized_out (val));
|
||
|
||
/* If virtual format is floating, print it that way, and in raw
|
||
hex. */
|
||
if (TYPE_CODE (regtype) == TYPE_CODE_FLT
|
||
|| TYPE_CODE (regtype) == TYPE_CODE_DECFLOAT)
|
||
{
|
||
struct value_print_options opts;
|
||
const gdb_byte *valaddr = value_contents_for_printing (val);
|
||
enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (regtype));
|
||
|
||
get_user_print_options (&opts);
|
||
opts.deref_ref = 1;
|
||
|
||
val_print (regtype,
|
||
value_embedded_offset (val), 0,
|
||
&format_stream, 0, val, &opts, current_language);
|
||
|
||
if (print_raw_format)
|
||
{
|
||
pad_to_column (format_stream, value_column_2);
|
||
format_stream.puts ("(raw ");
|
||
print_hex_chars (&format_stream, valaddr, TYPE_LENGTH (regtype),
|
||
byte_order, true);
|
||
format_stream.putc (')');
|
||
}
|
||
}
|
||
else
|
||
{
|
||
struct value_print_options opts;
|
||
|
||
/* Print the register in hex. */
|
||
get_formatted_print_options (&opts, 'x');
|
||
opts.deref_ref = 1;
|
||
val_print (regtype,
|
||
value_embedded_offset (val), 0,
|
||
&format_stream, 0, val, &opts, current_language);
|
||
/* If not a vector register, print it also according to its
|
||
natural format. */
|
||
if (print_raw_format && TYPE_VECTOR (regtype) == 0)
|
||
{
|
||
pad_to_column (format_stream, value_column_2);
|
||
get_user_print_options (&opts);
|
||
opts.deref_ref = 1;
|
||
val_print (regtype,
|
||
value_embedded_offset (val), 0,
|
||
&format_stream, 0, val, &opts, current_language);
|
||
}
|
||
}
|
||
|
||
fputs_filtered (format_stream.c_str (), file);
|
||
fprintf_filtered (file, "\n");
|
||
}
|
||
|
||
/* Print out the machine register regnum. If regnum is -1, print all
|
||
registers (print_all == 1) or all non-float and non-vector
|
||
registers (print_all == 0).
|
||
|
||
For most machines, having all_registers_info() print the
|
||
register(s) one per line is good enough. If a different format is
|
||
required, (eg, for MIPS or Pyramid 90x, which both have lots of
|
||
regs), or there is an existing convention for showing all the
|
||
registers, define the architecture method PRINT_REGISTERS_INFO to
|
||
provide that format. */
|
||
|
||
void
|
||
default_print_registers_info (struct gdbarch *gdbarch,
|
||
struct ui_file *file,
|
||
struct frame_info *frame,
|
||
int regnum, int print_all)
|
||
{
|
||
int i;
|
||
const int numregs = gdbarch_num_regs (gdbarch)
|
||
+ gdbarch_num_pseudo_regs (gdbarch);
|
||
|
||
for (i = 0; i < numregs; i++)
|
||
{
|
||
/* Decide between printing all regs, non-float / vector regs, or
|
||
specific reg. */
|
||
if (regnum == -1)
|
||
{
|
||
if (print_all)
|
||
{
|
||
if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup))
|
||
continue;
|
||
}
|
||
else
|
||
{
|
||
if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup))
|
||
continue;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (i != regnum)
|
||
continue;
|
||
}
|
||
|
||
/* If the register name is empty, it is undefined for this
|
||
processor, so don't display anything. */
|
||
if (gdbarch_register_name (gdbarch, i) == NULL
|
||
|| *(gdbarch_register_name (gdbarch, i)) == '\0')
|
||
continue;
|
||
|
||
default_print_one_register_info (file,
|
||
gdbarch_register_name (gdbarch, i),
|
||
value_of_register (i, frame));
|
||
}
|
||
}
|
||
|
||
void
|
||
registers_info (const char *addr_exp, int fpregs)
|
||
{
|
||
struct frame_info *frame;
|
||
struct gdbarch *gdbarch;
|
||
|
||
if (!target_has_registers)
|
||
error (_("The program has no registers now."));
|
||
frame = get_selected_frame (NULL);
|
||
gdbarch = get_frame_arch (frame);
|
||
|
||
if (!addr_exp)
|
||
{
|
||
gdbarch_print_registers_info (gdbarch, gdb_stdout,
|
||
frame, -1, fpregs);
|
||
return;
|
||
}
|
||
|
||
while (*addr_exp != '\0')
|
||
{
|
||
const char *start;
|
||
const char *end;
|
||
|
||
/* Skip leading white space. */
|
||
addr_exp = skip_spaces (addr_exp);
|
||
|
||
/* Discard any leading ``$''. Check that there is something
|
||
resembling a register following it. */
|
||
if (addr_exp[0] == '$')
|
||
addr_exp++;
|
||
if (isspace ((*addr_exp)) || (*addr_exp) == '\0')
|
||
error (_("Missing register name"));
|
||
|
||
/* Find the start/end of this register name/num/group. */
|
||
start = addr_exp;
|
||
while ((*addr_exp) != '\0' && !isspace ((*addr_exp)))
|
||
addr_exp++;
|
||
end = addr_exp;
|
||
|
||
/* Figure out what we've found and display it. */
|
||
|
||
/* A register name? */
|
||
{
|
||
int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start);
|
||
|
||
if (regnum >= 0)
|
||
{
|
||
/* User registers lie completely outside of the range of
|
||
normal registers. Catch them early so that the target
|
||
never sees them. */
|
||
if (regnum >= gdbarch_num_regs (gdbarch)
|
||
+ gdbarch_num_pseudo_regs (gdbarch))
|
||
{
|
||
struct value *regval = value_of_user_reg (regnum, frame);
|
||
const char *regname = user_reg_map_regnum_to_name (gdbarch,
|
||
regnum);
|
||
|
||
/* Print in the same fashion
|
||
gdbarch_print_registers_info's default
|
||
implementation prints. */
|
||
default_print_one_register_info (gdb_stdout,
|
||
regname,
|
||
regval);
|
||
}
|
||
else
|
||
gdbarch_print_registers_info (gdbarch, gdb_stdout,
|
||
frame, regnum, fpregs);
|
||
continue;
|
||
}
|
||
}
|
||
|
||
/* A register group? */
|
||
{
|
||
struct reggroup *group;
|
||
|
||
for (group = reggroup_next (gdbarch, NULL);
|
||
group != NULL;
|
||
group = reggroup_next (gdbarch, group))
|
||
{
|
||
/* Don't bother with a length check. Should the user
|
||
enter a short register group name, go with the first
|
||
group that matches. */
|
||
if (strncmp (start, reggroup_name (group), end - start) == 0)
|
||
break;
|
||
}
|
||
if (group != NULL)
|
||
{
|
||
int regnum;
|
||
|
||
for (regnum = 0;
|
||
regnum < gdbarch_num_regs (gdbarch)
|
||
+ gdbarch_num_pseudo_regs (gdbarch);
|
||
regnum++)
|
||
{
|
||
if (gdbarch_register_reggroup_p (gdbarch, regnum, group))
|
||
gdbarch_print_registers_info (gdbarch,
|
||
gdb_stdout, frame,
|
||
regnum, fpregs);
|
||
}
|
||
continue;
|
||
}
|
||
}
|
||
|
||
/* Nothing matched. */
|
||
error (_("Invalid register `%.*s'"), (int) (end - start), start);
|
||
}
|
||
}
|
||
|
||
static void
|
||
info_all_registers_command (const char *addr_exp, int from_tty)
|
||
{
|
||
registers_info (addr_exp, 1);
|
||
}
|
||
|
||
static void
|
||
info_registers_command (const char *addr_exp, int from_tty)
|
||
{
|
||
registers_info (addr_exp, 0);
|
||
}
|
||
|
||
static void
|
||
print_vector_info (struct ui_file *file,
|
||
struct frame_info *frame, const char *args)
|
||
{
|
||
struct gdbarch *gdbarch = get_frame_arch (frame);
|
||
|
||
if (gdbarch_print_vector_info_p (gdbarch))
|
||
gdbarch_print_vector_info (gdbarch, file, frame, args);
|
||
else
|
||
{
|
||
int regnum;
|
||
int printed_something = 0;
|
||
|
||
for (regnum = 0;
|
||
regnum < gdbarch_num_regs (gdbarch)
|
||
+ gdbarch_num_pseudo_regs (gdbarch);
|
||
regnum++)
|
||
{
|
||
if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup))
|
||
{
|
||
printed_something = 1;
|
||
gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
|
||
}
|
||
}
|
||
if (!printed_something)
|
||
fprintf_filtered (file, "No vector information\n");
|
||
}
|
||
}
|
||
|
||
static void
|
||
info_vector_command (const char *args, int from_tty)
|
||
{
|
||
if (!target_has_registers)
|
||
error (_("The program has no registers now."));
|
||
|
||
print_vector_info (gdb_stdout, get_selected_frame (NULL), args);
|
||
}
|
||
|
||
/* Kill the inferior process. Make us have no inferior. */
|
||
|
||
static void
|
||
kill_command (const char *arg, int from_tty)
|
||
{
|
||
/* FIXME: This should not really be inferior_ptid (or target_has_execution).
|
||
It should be a distinct flag that indicates that a target is active, cuz
|
||
some targets don't have processes! */
|
||
|
||
if (ptid_equal (inferior_ptid, null_ptid))
|
||
error (_("The program is not being run."));
|
||
if (!query (_("Kill the program being debugged? ")))
|
||
error (_("Not confirmed."));
|
||
|
||
int pid = current_inferior ()->pid;
|
||
/* Save the pid as a string before killing the inferior, since that
|
||
may unpush the current target, and we need the string after. */
|
||
std::string pid_str = target_pid_to_str (pid_to_ptid (pid));
|
||
int infnum = current_inferior ()->num;
|
||
|
||
target_kill ();
|
||
|
||
if (print_inferior_events)
|
||
printf_unfiltered (_("[Inferior %d (%s) killed]\n"),
|
||
infnum, pid_str.c_str ());
|
||
|
||
/* If we still have other inferiors to debug, then don't mess with
|
||
with their threads. */
|
||
if (!have_inferiors ())
|
||
{
|
||
init_thread_list (); /* Destroy thread info. */
|
||
|
||
/* Killing off the inferior can leave us with a core file. If
|
||
so, print the state we are left in. */
|
||
if (target_has_stack)
|
||
{
|
||
printf_filtered (_("In %s,\n"), target_longname);
|
||
print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1);
|
||
}
|
||
}
|
||
bfd_cache_close_all ();
|
||
}
|
||
|
||
/* Used in `attach&' command. ARG is a point to an integer
|
||
representing a process id. Proceed threads of this process iff
|
||
they stopped due to debugger request, and when they did, they
|
||
reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
|
||
that have been explicitly been told to stop. */
|
||
|
||
static int
|
||
proceed_after_attach_callback (struct thread_info *thread,
|
||
void *arg)
|
||
{
|
||
int pid = * (int *) arg;
|
||
|
||
if (ptid_get_pid (thread->ptid) == pid
|
||
&& !is_exited (thread->ptid)
|
||
&& !is_executing (thread->ptid)
|
||
&& !thread->stop_requested
|
||
&& thread->suspend.stop_signal == GDB_SIGNAL_0)
|
||
{
|
||
switch_to_thread (thread->ptid);
|
||
clear_proceed_status (0);
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT);
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
proceed_after_attach (int pid)
|
||
{
|
||
/* Don't error out if the current thread is running, because
|
||
there may be other stopped threads. */
|
||
|
||
/* Backup current thread and selected frame. */
|
||
scoped_restore_current_thread restore_thread;
|
||
|
||
iterate_over_threads (proceed_after_attach_callback, &pid);
|
||
}
|
||
|
||
/* See inferior.h. */
|
||
|
||
void
|
||
setup_inferior (int from_tty)
|
||
{
|
||
struct inferior *inferior;
|
||
|
||
inferior = current_inferior ();
|
||
inferior->needs_setup = 0;
|
||
|
||
/* If no exec file is yet known, try to determine it from the
|
||
process itself. */
|
||
if (get_exec_file (0) == NULL)
|
||
exec_file_locate_attach (ptid_get_pid (inferior_ptid), 1, from_tty);
|
||
else
|
||
{
|
||
reopen_exec_file ();
|
||
reread_symbols ();
|
||
}
|
||
|
||
/* Take any necessary post-attaching actions for this platform. */
|
||
target_post_attach (ptid_get_pid (inferior_ptid));
|
||
|
||
post_create_inferior (target_stack, from_tty);
|
||
}
|
||
|
||
/* What to do after the first program stops after attaching. */
|
||
enum attach_post_wait_mode
|
||
{
|
||
/* Do nothing. Leaves threads as they are. */
|
||
ATTACH_POST_WAIT_NOTHING,
|
||
|
||
/* Re-resume threads that are marked running. */
|
||
ATTACH_POST_WAIT_RESUME,
|
||
|
||
/* Stop all threads. */
|
||
ATTACH_POST_WAIT_STOP,
|
||
};
|
||
|
||
/* Called after we've attached to a process and we've seen it stop for
|
||
the first time. If ASYNC_EXEC is true, re-resume threads that
|
||
should be running. Else if ATTACH, */
|
||
|
||
static void
|
||
attach_post_wait (const char *args, int from_tty, enum attach_post_wait_mode mode)
|
||
{
|
||
struct inferior *inferior;
|
||
|
||
inferior = current_inferior ();
|
||
inferior->control.stop_soon = NO_STOP_QUIETLY;
|
||
|
||
if (inferior->needs_setup)
|
||
setup_inferior (from_tty);
|
||
|
||
if (mode == ATTACH_POST_WAIT_RESUME)
|
||
{
|
||
/* The user requested an `attach&', so be sure to leave threads
|
||
that didn't get a signal running. */
|
||
|
||
/* Immediatelly resume all suspended threads of this inferior,
|
||
and this inferior only. This should have no effect on
|
||
already running threads. If a thread has been stopped with a
|
||
signal, leave it be. */
|
||
if (non_stop)
|
||
proceed_after_attach (inferior->pid);
|
||
else
|
||
{
|
||
if (inferior_thread ()->suspend.stop_signal == GDB_SIGNAL_0)
|
||
{
|
||
clear_proceed_status (0);
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT);
|
||
}
|
||
}
|
||
}
|
||
else if (mode == ATTACH_POST_WAIT_STOP)
|
||
{
|
||
/* The user requested a plain `attach', so be sure to leave
|
||
the inferior stopped. */
|
||
|
||
/* At least the current thread is already stopped. */
|
||
|
||
/* In all-stop, by definition, all threads have to be already
|
||
stopped at this point. In non-stop, however, although the
|
||
selected thread is stopped, others may still be executing.
|
||
Be sure to explicitly stop all threads of the process. This
|
||
should have no effect on already stopped threads. */
|
||
if (non_stop)
|
||
target_stop (pid_to_ptid (inferior->pid));
|
||
else if (target_is_non_stop_p ())
|
||
{
|
||
struct thread_info *thread;
|
||
struct thread_info *lowest = inferior_thread ();
|
||
int pid = current_inferior ()->pid;
|
||
|
||
stop_all_threads ();
|
||
|
||
/* It's not defined which thread will report the attach
|
||
stop. For consistency, always select the thread with
|
||
lowest GDB number, which should be the main thread, if it
|
||
still exists. */
|
||
ALL_NON_EXITED_THREADS (thread)
|
||
{
|
||
if (ptid_get_pid (thread->ptid) == pid)
|
||
{
|
||
if (thread->inf->num < lowest->inf->num
|
||
|| thread->per_inf_num < lowest->per_inf_num)
|
||
lowest = thread;
|
||
}
|
||
}
|
||
|
||
switch_to_thread (lowest->ptid);
|
||
}
|
||
|
||
/* Tell the user/frontend where we're stopped. */
|
||
normal_stop ();
|
||
if (deprecated_attach_hook)
|
||
deprecated_attach_hook ();
|
||
}
|
||
}
|
||
|
||
struct attach_command_continuation_args
|
||
{
|
||
char *args;
|
||
int from_tty;
|
||
enum attach_post_wait_mode mode;
|
||
};
|
||
|
||
static void
|
||
attach_command_continuation (void *args, int err)
|
||
{
|
||
struct attach_command_continuation_args *a
|
||
= (struct attach_command_continuation_args *) args;
|
||
|
||
if (err)
|
||
return;
|
||
|
||
attach_post_wait (a->args, a->from_tty, a->mode);
|
||
}
|
||
|
||
static void
|
||
attach_command_continuation_free_args (void *args)
|
||
{
|
||
struct attach_command_continuation_args *a
|
||
= (struct attach_command_continuation_args *) args;
|
||
|
||
xfree (a->args);
|
||
xfree (a);
|
||
}
|
||
|
||
/* "attach" command entry point. Takes a program started up outside
|
||
of gdb and ``attaches'' to it. This stops it cold in its tracks
|
||
and allows us to start debugging it. */
|
||
|
||
void
|
||
attach_command (const char *args, int from_tty)
|
||
{
|
||
int async_exec;
|
||
struct target_ops *attach_target;
|
||
struct inferior *inferior = current_inferior ();
|
||
enum attach_post_wait_mode mode;
|
||
|
||
dont_repeat (); /* Not for the faint of heart */
|
||
|
||
if (gdbarch_has_global_solist (target_gdbarch ()))
|
||
/* Don't complain if all processes share the same symbol
|
||
space. */
|
||
;
|
||
else if (target_has_execution)
|
||
{
|
||
if (query (_("A program is being debugged already. Kill it? ")))
|
||
target_kill ();
|
||
else
|
||
error (_("Not killed."));
|
||
}
|
||
|
||
/* Clean up any leftovers from other runs. Some other things from
|
||
this function should probably be moved into target_pre_inferior. */
|
||
target_pre_inferior (from_tty);
|
||
|
||
gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec);
|
||
args = stripped.get ();
|
||
|
||
attach_target = find_attach_target ();
|
||
|
||
prepare_execution_command (attach_target, async_exec);
|
||
|
||
if (non_stop && !attach_target->supports_non_stop ())
|
||
error (_("Cannot attach to this target in non-stop mode"));
|
||
|
||
attach_target->attach (args, from_tty);
|
||
/* to_attach should push the target, so after this point we
|
||
shouldn't refer to attach_target again. */
|
||
attach_target = NULL;
|
||
|
||
/* Set up the "saved terminal modes" of the inferior
|
||
based on what modes we are starting it with. */
|
||
target_terminal::init ();
|
||
|
||
/* Install inferior's terminal modes. This may look like a no-op,
|
||
as we've just saved them above, however, this does more than
|
||
restore terminal settings:
|
||
|
||
- installs a SIGINT handler that forwards SIGINT to the inferior.
|
||
Otherwise a Ctrl-C pressed just while waiting for the initial
|
||
stop would end up as a spurious Quit.
|
||
|
||
- removes stdin from the event loop, which we need if attaching
|
||
in the foreground, otherwise on targets that report an initial
|
||
stop on attach (which are most) we'd process input/commands
|
||
while we're in the event loop waiting for that stop. That is,
|
||
before the attach continuation runs and the command is really
|
||
finished. */
|
||
target_terminal::inferior ();
|
||
|
||
/* Set up execution context to know that we should return from
|
||
wait_for_inferior as soon as the target reports a stop. */
|
||
init_wait_for_inferior ();
|
||
clear_proceed_status (0);
|
||
|
||
inferior->needs_setup = 1;
|
||
|
||
if (target_is_non_stop_p ())
|
||
{
|
||
/* If we find that the current thread isn't stopped, explicitly
|
||
do so now, because we're going to install breakpoints and
|
||
poke at memory. */
|
||
|
||
if (async_exec)
|
||
/* The user requested an `attach&'; stop just one thread. */
|
||
target_stop (inferior_ptid);
|
||
else
|
||
/* The user requested an `attach', so stop all threads of this
|
||
inferior. */
|
||
target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid)));
|
||
}
|
||
|
||
mode = async_exec ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_STOP;
|
||
|
||
/* Some system don't generate traps when attaching to inferior.
|
||
E.g. Mach 3 or GNU hurd. */
|
||
if (!target_attach_no_wait ())
|
||
{
|
||
struct attach_command_continuation_args *a;
|
||
|
||
/* Careful here. See comments in inferior.h. Basically some
|
||
OSes don't ignore SIGSTOPs on continue requests anymore. We
|
||
need a way for handle_inferior_event to reset the stop_signal
|
||
variable after an attach, and this is what
|
||
STOP_QUIETLY_NO_SIGSTOP is for. */
|
||
inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP;
|
||
|
||
/* Wait for stop. */
|
||
a = XNEW (struct attach_command_continuation_args);
|
||
a->args = xstrdup (args);
|
||
a->from_tty = from_tty;
|
||
a->mode = mode;
|
||
add_inferior_continuation (attach_command_continuation, a,
|
||
attach_command_continuation_free_args);
|
||
|
||
if (!target_is_async_p ())
|
||
mark_infrun_async_event_handler ();
|
||
return;
|
||
}
|
||
|
||
attach_post_wait (args, from_tty, mode);
|
||
}
|
||
|
||
/* We had just found out that the target was already attached to an
|
||
inferior. PTID points at a thread of this new inferior, that is
|
||
the most likely to be stopped right now, but not necessarily so.
|
||
The new inferior is assumed to be already added to the inferior
|
||
list at this point. If LEAVE_RUNNING, then leave the threads of
|
||
this inferior running, except those we've explicitly seen reported
|
||
as stopped. */
|
||
|
||
void
|
||
notice_new_inferior (ptid_t ptid, int leave_running, int from_tty)
|
||
{
|
||
enum attach_post_wait_mode mode
|
||
= leave_running ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_NOTHING;
|
||
|
||
gdb::optional<scoped_restore_current_thread> restore_thread;
|
||
|
||
if (inferior_ptid != null_ptid)
|
||
restore_thread.emplace ();
|
||
|
||
/* Avoid reading registers -- we haven't fetched the target
|
||
description yet. */
|
||
switch_to_thread_no_regs (find_thread_ptid (ptid));
|
||
|
||
/* When we "notice" a new inferior we need to do all the things we
|
||
would normally do if we had just attached to it. */
|
||
|
||
if (is_executing (inferior_ptid))
|
||
{
|
||
struct attach_command_continuation_args *a;
|
||
struct inferior *inferior = current_inferior ();
|
||
|
||
/* We're going to install breakpoints, and poke at memory,
|
||
ensure that the inferior is stopped for a moment while we do
|
||
that. */
|
||
target_stop (inferior_ptid);
|
||
|
||
inferior->control.stop_soon = STOP_QUIETLY_REMOTE;
|
||
|
||
/* Wait for stop before proceeding. */
|
||
a = XNEW (struct attach_command_continuation_args);
|
||
a->args = xstrdup ("");
|
||
a->from_tty = from_tty;
|
||
a->mode = mode;
|
||
add_inferior_continuation (attach_command_continuation, a,
|
||
attach_command_continuation_free_args);
|
||
|
||
return;
|
||
}
|
||
|
||
attach_post_wait ("" /* args */, from_tty, mode);
|
||
}
|
||
|
||
/*
|
||
* detach_command --
|
||
* takes a program previously attached to and detaches it.
|
||
* The program resumes execution and will no longer stop
|
||
* on signals, etc. We better not have left any breakpoints
|
||
* in the program or it'll die when it hits one. For this
|
||
* to work, it may be necessary for the process to have been
|
||
* previously attached. It *might* work if the program was
|
||
* started via the normal ptrace (PTRACE_TRACEME).
|
||
*/
|
||
|
||
void
|
||
detach_command (const char *args, int from_tty)
|
||
{
|
||
dont_repeat (); /* Not for the faint of heart. */
|
||
|
||
if (ptid_equal (inferior_ptid, null_ptid))
|
||
error (_("The program is not being run."));
|
||
|
||
query_if_trace_running (from_tty);
|
||
|
||
disconnect_tracing ();
|
||
|
||
target_detach (current_inferior (), from_tty);
|
||
|
||
/* The current inferior process was just detached successfully. Get
|
||
rid of breakpoints that no longer make sense. Note we don't do
|
||
this within target_detach because that is also used when
|
||
following child forks, and in that case we will want to transfer
|
||
breakpoints to the child, not delete them. */
|
||
breakpoint_init_inferior (inf_exited);
|
||
|
||
/* If the solist is global across inferiors, don't clear it when we
|
||
detach from a single inferior. */
|
||
if (!gdbarch_has_global_solist (target_gdbarch ()))
|
||
no_shared_libraries (NULL, from_tty);
|
||
|
||
/* If we still have inferiors to debug, then don't mess with their
|
||
threads. */
|
||
if (!have_inferiors ())
|
||
init_thread_list ();
|
||
|
||
if (deprecated_detach_hook)
|
||
deprecated_detach_hook ();
|
||
}
|
||
|
||
/* Disconnect from the current target without resuming it (leaving it
|
||
waiting for a debugger).
|
||
|
||
We'd better not have left any breakpoints in the program or the
|
||
next debugger will get confused. Currently only supported for some
|
||
remote targets, since the normal attach mechanisms don't work on
|
||
stopped processes on some native platforms (e.g. GNU/Linux). */
|
||
|
||
static void
|
||
disconnect_command (const char *args, int from_tty)
|
||
{
|
||
dont_repeat (); /* Not for the faint of heart. */
|
||
query_if_trace_running (from_tty);
|
||
disconnect_tracing ();
|
||
target_disconnect (args, from_tty);
|
||
no_shared_libraries (NULL, from_tty);
|
||
init_thread_list ();
|
||
if (deprecated_detach_hook)
|
||
deprecated_detach_hook ();
|
||
}
|
||
|
||
void
|
||
interrupt_target_1 (int all_threads)
|
||
{
|
||
ptid_t ptid;
|
||
|
||
if (all_threads)
|
||
ptid = minus_one_ptid;
|
||
else
|
||
ptid = inferior_ptid;
|
||
|
||
if (non_stop)
|
||
target_stop (ptid);
|
||
else
|
||
target_interrupt ();
|
||
|
||
/* Tag the thread as having been explicitly requested to stop, so
|
||
other parts of gdb know not to resume this thread automatically,
|
||
if it was stopped due to an internal event. Limit this to
|
||
non-stop mode, as when debugging a multi-threaded application in
|
||
all-stop mode, we will only get one stop event --- it's undefined
|
||
which thread will report the event. */
|
||
if (non_stop)
|
||
set_stop_requested (ptid, 1);
|
||
}
|
||
|
||
/* interrupt [-a]
|
||
Stop the execution of the target while running in async mode, in
|
||
the background. In all-stop, stop the whole process. In non-stop
|
||
mode, stop the current thread only by default, or stop all threads
|
||
if the `-a' switch is used. */
|
||
|
||
static void
|
||
interrupt_command (const char *args, int from_tty)
|
||
{
|
||
if (target_can_async_p ())
|
||
{
|
||
int all_threads = 0;
|
||
|
||
dont_repeat (); /* Not for the faint of heart. */
|
||
|
||
if (args != NULL
|
||
&& startswith (args, "-a"))
|
||
all_threads = 1;
|
||
|
||
if (!non_stop && all_threads)
|
||
error (_("-a is meaningless in all-stop mode."));
|
||
|
||
interrupt_target_1 (all_threads);
|
||
}
|
||
}
|
||
|
||
/* See inferior.h. */
|
||
|
||
void
|
||
default_print_float_info (struct gdbarch *gdbarch, struct ui_file *file,
|
||
struct frame_info *frame, const char *args)
|
||
{
|
||
int regnum;
|
||
int printed_something = 0;
|
||
|
||
for (regnum = 0;
|
||
regnum < gdbarch_num_regs (gdbarch)
|
||
+ gdbarch_num_pseudo_regs (gdbarch);
|
||
regnum++)
|
||
{
|
||
if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup))
|
||
{
|
||
printed_something = 1;
|
||
gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
|
||
}
|
||
}
|
||
if (!printed_something)
|
||
fprintf_filtered (file, "No floating-point info "
|
||
"available for this processor.\n");
|
||
}
|
||
|
||
static void
|
||
info_float_command (const char *args, int from_tty)
|
||
{
|
||
struct frame_info *frame;
|
||
|
||
if (!target_has_registers)
|
||
error (_("The program has no registers now."));
|
||
|
||
frame = get_selected_frame (NULL);
|
||
gdbarch_print_float_info (get_frame_arch (frame), gdb_stdout, frame, args);
|
||
}
|
||
|
||
static void
|
||
unset_command (const char *args, int from_tty)
|
||
{
|
||
printf_filtered (_("\"unset\" must be followed by the "
|
||
"name of an unset subcommand.\n"));
|
||
help_list (unsetlist, "unset ", all_commands, gdb_stdout);
|
||
}
|
||
|
||
/* Implement `info proc' family of commands. */
|
||
|
||
static void
|
||
info_proc_cmd_1 (const char *args, enum info_proc_what what, int from_tty)
|
||
{
|
||
struct gdbarch *gdbarch = get_current_arch ();
|
||
|
||
if (!target_info_proc (args, what))
|
||
{
|
||
if (gdbarch_info_proc_p (gdbarch))
|
||
gdbarch_info_proc (gdbarch, args, what);
|
||
else
|
||
error (_("Not supported on this target."));
|
||
}
|
||
}
|
||
|
||
/* Implement `info proc' when given without any futher parameters. */
|
||
|
||
static void
|
||
info_proc_cmd (const char *args, int from_tty)
|
||
{
|
||
info_proc_cmd_1 (args, IP_MINIMAL, from_tty);
|
||
}
|
||
|
||
/* Implement `info proc mappings'. */
|
||
|
||
static void
|
||
info_proc_cmd_mappings (const char *args, int from_tty)
|
||
{
|
||
info_proc_cmd_1 (args, IP_MAPPINGS, from_tty);
|
||
}
|
||
|
||
/* Implement `info proc stat'. */
|
||
|
||
static void
|
||
info_proc_cmd_stat (const char *args, int from_tty)
|
||
{
|
||
info_proc_cmd_1 (args, IP_STAT, from_tty);
|
||
}
|
||
|
||
/* Implement `info proc status'. */
|
||
|
||
static void
|
||
info_proc_cmd_status (const char *args, int from_tty)
|
||
{
|
||
info_proc_cmd_1 (args, IP_STATUS, from_tty);
|
||
}
|
||
|
||
/* Implement `info proc cwd'. */
|
||
|
||
static void
|
||
info_proc_cmd_cwd (const char *args, int from_tty)
|
||
{
|
||
info_proc_cmd_1 (args, IP_CWD, from_tty);
|
||
}
|
||
|
||
/* Implement `info proc cmdline'. */
|
||
|
||
static void
|
||
info_proc_cmd_cmdline (const char *args, int from_tty)
|
||
{
|
||
info_proc_cmd_1 (args, IP_CMDLINE, from_tty);
|
||
}
|
||
|
||
/* Implement `info proc exe'. */
|
||
|
||
static void
|
||
info_proc_cmd_exe (const char *args, int from_tty)
|
||
{
|
||
info_proc_cmd_1 (args, IP_EXE, from_tty);
|
||
}
|
||
|
||
/* Implement `info proc all'. */
|
||
|
||
static void
|
||
info_proc_cmd_all (const char *args, int from_tty)
|
||
{
|
||
info_proc_cmd_1 (args, IP_ALL, from_tty);
|
||
}
|
||
|
||
/* This help string is used for the run, start, and starti commands.
|
||
It is defined as a macro to prevent duplication. */
|
||
|
||
#define RUN_ARGS_HELP \
|
||
"You may specify arguments to give it.\n\
|
||
Args may include \"*\", or \"[...]\"; they are expanded using the\n\
|
||
shell that will start the program (specified by the \"$SHELL\" environment\n\
|
||
variable). Input and output redirection with \">\", \"<\", or \">>\"\n\
|
||
are also allowed.\n\
|
||
\n\
|
||
With no arguments, uses arguments last specified (with \"run\" or \n\
|
||
\"set args\"). To cancel previous arguments and run with no arguments,\n\
|
||
use \"set args\" without arguments.\n\
|
||
\n\
|
||
To start the inferior without using a shell, use \"set startup-with-shell off\"."
|
||
|
||
void
|
||
_initialize_infcmd (void)
|
||
{
|
||
static struct cmd_list_element *info_proc_cmdlist;
|
||
struct cmd_list_element *c = NULL;
|
||
const char *cmd_name;
|
||
|
||
/* Add the filename of the terminal connected to inferior I/O. */
|
||
add_setshow_optional_filename_cmd ("inferior-tty", class_run,
|
||
&inferior_io_terminal_scratch, _("\
|
||
Set terminal for future runs of program being debugged."), _("\
|
||
Show terminal for future runs of program being debugged."), _("\
|
||
Usage: set inferior-tty [TTY]\n\n\
|
||
If TTY is omitted, the default behavior of using the same terminal as GDB\n\
|
||
is restored."),
|
||
set_inferior_tty_command,
|
||
show_inferior_tty_command,
|
||
&setlist, &showlist);
|
||
cmd_name = "inferior-tty";
|
||
c = lookup_cmd (&cmd_name, setlist, "", -1, 1);
|
||
gdb_assert (c != NULL);
|
||
add_alias_cmd ("tty", c, class_alias, 0, &cmdlist);
|
||
|
||
cmd_name = "args";
|
||
add_setshow_string_noescape_cmd (cmd_name, class_run,
|
||
&inferior_args_scratch, _("\
|
||
Set argument list to give program being debugged when it is started."), _("\
|
||
Show argument list to give program being debugged when it is started."), _("\
|
||
Follow this command with any number of args, to be passed to the program."),
|
||
set_args_command,
|
||
show_args_command,
|
||
&setlist, &showlist);
|
||
c = lookup_cmd (&cmd_name, setlist, "", -1, 1);
|
||
gdb_assert (c != NULL);
|
||
set_cmd_completer (c, filename_completer);
|
||
|
||
cmd_name = "cwd";
|
||
add_setshow_string_noescape_cmd (cmd_name, class_run,
|
||
&inferior_cwd_scratch, _("\
|
||
Set the current working directory to be used when the inferior is started.\n\
|
||
Changing this setting does not have any effect on inferiors that are\n\
|
||
already running."),
|
||
_("\
|
||
Show the current working directory that is used when the inferior is started."),
|
||
_("\
|
||
Use this command to change the current working directory that will be used\n\
|
||
when the inferior is started. This setting does not affect GDB's current\n\
|
||
working directory."),
|
||
set_cwd_command,
|
||
show_cwd_command,
|
||
&setlist, &showlist);
|
||
c = lookup_cmd (&cmd_name, setlist, "", -1, 1);
|
||
gdb_assert (c != NULL);
|
||
set_cmd_completer (c, filename_completer);
|
||
|
||
c = add_cmd ("environment", no_class, environment_info, _("\
|
||
The environment to give the program, or one variable's value.\n\
|
||
With an argument VAR, prints the value of environment variable VAR to\n\
|
||
give the program being debugged. With no arguments, prints the entire\n\
|
||
environment to be given to the program."), &showlist);
|
||
set_cmd_completer (c, noop_completer);
|
||
|
||
add_prefix_cmd ("unset", no_class, unset_command,
|
||
_("Complement to certain \"set\" commands."),
|
||
&unsetlist, "unset ", 0, &cmdlist);
|
||
|
||
c = add_cmd ("environment", class_run, unset_environment_command, _("\
|
||
Cancel environment variable VAR for the program.\n\
|
||
This does not affect the program until the next \"run\" command."),
|
||
&unsetlist);
|
||
set_cmd_completer (c, noop_completer);
|
||
|
||
c = add_cmd ("environment", class_run, set_environment_command, _("\
|
||
Set environment variable value to give the program.\n\
|
||
Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
|
||
VALUES of environment variables are uninterpreted strings.\n\
|
||
This does not affect the program until the next \"run\" command."),
|
||
&setlist);
|
||
set_cmd_completer (c, noop_completer);
|
||
|
||
c = add_com ("path", class_files, path_command, _("\
|
||
Add directory DIR(s) to beginning of search path for object files.\n\
|
||
$cwd in the path means the current working directory.\n\
|
||
This path is equivalent to the $PATH shell variable. It is a list of\n\
|
||
directories, separated by colons. These directories are searched to find\n\
|
||
fully linked executable files and separately compiled object files as \
|
||
needed."));
|
||
set_cmd_completer (c, filename_completer);
|
||
|
||
c = add_cmd ("paths", no_class, path_info, _("\
|
||
Current search path for finding object files.\n\
|
||
$cwd in the path means the current working directory.\n\
|
||
This path is equivalent to the $PATH shell variable. It is a list of\n\
|
||
directories, separated by colons. These directories are searched to find\n\
|
||
fully linked executable files and separately compiled object files as \
|
||
needed."),
|
||
&showlist);
|
||
set_cmd_completer (c, noop_completer);
|
||
|
||
add_prefix_cmd ("kill", class_run, kill_command,
|
||
_("Kill execution of program being debugged."),
|
||
&killlist, "kill ", 0, &cmdlist);
|
||
|
||
add_com ("attach", class_run, attach_command, _("\
|
||
Attach to a process or file outside of GDB.\n\
|
||
This command attaches to another target, of the same type as your last\n\
|
||
\"target\" command (\"info files\" will show your target stack).\n\
|
||
The command may take as argument a process id or a device file.\n\
|
||
For a process id, you must have permission to send the process a signal,\n\
|
||
and it must have the same effective uid as the debugger.\n\
|
||
When using \"attach\" with a process id, the debugger finds the\n\
|
||
program running in the process, looking first in the current working\n\
|
||
directory, or (if not found there) using the source file search path\n\
|
||
(see the \"directory\" command). You can also use the \"file\" command\n\
|
||
to specify the program, and to load its symbol table."));
|
||
|
||
add_prefix_cmd ("detach", class_run, detach_command, _("\
|
||
Detach a process or file previously attached.\n\
|
||
If a process, it is no longer traced, and it continues its execution. If\n\
|
||
you were debugging a file, the file is closed and gdb no longer accesses it."),
|
||
&detachlist, "detach ", 0, &cmdlist);
|
||
|
||
add_com ("disconnect", class_run, disconnect_command, _("\
|
||
Disconnect from a target.\n\
|
||
The target will wait for another debugger to connect. Not available for\n\
|
||
all targets."));
|
||
|
||
c = add_com ("signal", class_run, signal_command, _("\
|
||
Continue program with the specified signal.\n\
|
||
Usage: signal SIGNAL\n\
|
||
The SIGNAL argument is processed the same as the handle command.\n\
|
||
\n\
|
||
An argument of \"0\" means continue the program without sending it a signal.\n\
|
||
This is useful in cases where the program stopped because of a signal,\n\
|
||
and you want to resume the program while discarding the signal.\n\
|
||
\n\
|
||
In a multi-threaded program the signal is delivered to, or discarded from,\n\
|
||
the current thread only."));
|
||
set_cmd_completer (c, signal_completer);
|
||
|
||
c = add_com ("queue-signal", class_run, queue_signal_command, _("\
|
||
Queue a signal to be delivered to the current thread when it is resumed.\n\
|
||
Usage: queue-signal SIGNAL\n\
|
||
The SIGNAL argument is processed the same as the handle command.\n\
|
||
It is an error if the handling state of SIGNAL is \"nopass\".\n\
|
||
\n\
|
||
An argument of \"0\" means remove any currently queued signal from\n\
|
||
the current thread. This is useful in cases where the program stopped\n\
|
||
because of a signal, and you want to resume it while discarding the signal.\n\
|
||
\n\
|
||
In a multi-threaded program the signal is queued with, or discarded from,\n\
|
||
the current thread only."));
|
||
set_cmd_completer (c, signal_completer);
|
||
|
||
add_com ("stepi", class_run, stepi_command, _("\
|
||
Step one instruction exactly.\n\
|
||
Usage: stepi [N]\n\
|
||
Argument N means step N times (or till program stops for another \
|
||
reason)."));
|
||
add_com_alias ("si", "stepi", class_alias, 0);
|
||
|
||
add_com ("nexti", class_run, nexti_command, _("\
|
||
Step one instruction, but proceed through subroutine calls.\n\
|
||
Usage: nexti [N]\n\
|
||
Argument N means step N times (or till program stops for another \
|
||
reason)."));
|
||
add_com_alias ("ni", "nexti", class_alias, 0);
|
||
|
||
add_com ("finish", class_run, finish_command, _("\
|
||
Execute until selected stack frame returns.\n\
|
||
Usage: finish\n\
|
||
Upon return, the value returned is printed and put in the value history."));
|
||
add_com_alias ("fin", "finish", class_run, 1);
|
||
|
||
add_com ("next", class_run, next_command, _("\
|
||
Step program, proceeding through subroutine calls.\n\
|
||
Usage: next [N]\n\
|
||
Unlike \"step\", if the current source line calls a subroutine,\n\
|
||
this command does not enter the subroutine, but instead steps over\n\
|
||
the call, in effect treating it as a single source line."));
|
||
add_com_alias ("n", "next", class_run, 1);
|
||
|
||
add_com ("step", class_run, step_command, _("\
|
||
Step program until it reaches a different source line.\n\
|
||
Usage: step [N]\n\
|
||
Argument N means step N times (or till program stops for another \
|
||
reason)."));
|
||
add_com_alias ("s", "step", class_run, 1);
|
||
|
||
c = add_com ("until", class_run, until_command, _("\
|
||
Execute until the program reaches a source line greater than the current\n\
|
||
or a specified location (same args as break command) within the current \
|
||
frame."));
|
||
set_cmd_completer (c, location_completer);
|
||
add_com_alias ("u", "until", class_run, 1);
|
||
|
||
c = add_com ("advance", class_run, advance_command, _("\
|
||
Continue the program up to the given location (same form as args for break \
|
||
command).\n\
|
||
Execution will also stop upon exit from the current stack frame."));
|
||
set_cmd_completer (c, location_completer);
|
||
|
||
c = add_com ("jump", class_run, jump_command, _("\
|
||
Continue program being debugged at specified line or address.\n\
|
||
Usage: jump <location>\n\
|
||
Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
|
||
for an address to start at."));
|
||
set_cmd_completer (c, location_completer);
|
||
add_com_alias ("j", "jump", class_run, 1);
|
||
|
||
add_com ("continue", class_run, continue_command, _("\
|
||
Continue program being debugged, after signal or breakpoint.\n\
|
||
Usage: continue [N]\n\
|
||
If proceeding from breakpoint, a number N may be used as an argument,\n\
|
||
which means to set the ignore count of that breakpoint to N - 1 (so that\n\
|
||
the breakpoint won't break until the Nth time it is reached).\n\
|
||
\n\
|
||
If non-stop mode is enabled, continue only the current thread,\n\
|
||
otherwise all the threads in the program are continued. To \n\
|
||
continue all stopped threads in non-stop mode, use the -a option.\n\
|
||
Specifying -a and an ignore count simultaneously is an error."));
|
||
add_com_alias ("c", "cont", class_run, 1);
|
||
add_com_alias ("fg", "cont", class_run, 1);
|
||
|
||
c = add_com ("run", class_run, run_command, _("\
|
||
Start debugged program.\n"
|
||
RUN_ARGS_HELP));
|
||
set_cmd_completer (c, filename_completer);
|
||
add_com_alias ("r", "run", class_run, 1);
|
||
|
||
c = add_com ("start", class_run, start_command, _("\
|
||
Start the debugged program stopping at the beginning of the main procedure.\n"
|
||
RUN_ARGS_HELP));
|
||
set_cmd_completer (c, filename_completer);
|
||
|
||
c = add_com ("starti", class_run, starti_command, _("\
|
||
Start the debugged program stopping at the first instruction.\n"
|
||
RUN_ARGS_HELP));
|
||
set_cmd_completer (c, filename_completer);
|
||
|
||
add_com ("interrupt", class_run, interrupt_command,
|
||
_("Interrupt the execution of the debugged program.\n\
|
||
If non-stop mode is enabled, interrupt only the current thread,\n\
|
||
otherwise all the threads in the program are stopped. To \n\
|
||
interrupt all running threads in non-stop mode, use the -a option."));
|
||
|
||
c = add_info ("registers", info_registers_command, _("\
|
||
List of integer registers and their contents, for selected stack frame.\n\
|
||
One or more register names as argument means describe the given registers.\n\
|
||
One or more register group names as argument means describe the registers\n\
|
||
in the named register groups."));
|
||
add_info_alias ("r", "registers", 1);
|
||
set_cmd_completer (c, reg_or_group_completer);
|
||
|
||
c = add_info ("all-registers", info_all_registers_command, _("\
|
||
List of all registers and their contents, for selected stack frame.\n\
|
||
One or more register names as argument means describe the given registers.\n\
|
||
One or more register group names as argument means describe the registers\n\
|
||
in the named register groups."));
|
||
set_cmd_completer (c, reg_or_group_completer);
|
||
|
||
add_info ("program", info_program_command,
|
||
_("Execution status of the program."));
|
||
|
||
add_info ("float", info_float_command,
|
||
_("Print the status of the floating point unit\n"));
|
||
|
||
add_info ("vector", info_vector_command,
|
||
_("Print the status of the vector unit\n"));
|
||
|
||
add_prefix_cmd ("proc", class_info, info_proc_cmd,
|
||
_("\
|
||
Show /proc process information about any running process.\n\
|
||
Specify any process id, or use the program being debugged by default."),
|
||
&info_proc_cmdlist, "info proc ",
|
||
1/*allow-unknown*/, &infolist);
|
||
|
||
add_cmd ("mappings", class_info, info_proc_cmd_mappings, _("\
|
||
List of mapped memory regions."),
|
||
&info_proc_cmdlist);
|
||
|
||
add_cmd ("stat", class_info, info_proc_cmd_stat, _("\
|
||
List process info from /proc/PID/stat."),
|
||
&info_proc_cmdlist);
|
||
|
||
add_cmd ("status", class_info, info_proc_cmd_status, _("\
|
||
List process info from /proc/PID/status."),
|
||
&info_proc_cmdlist);
|
||
|
||
add_cmd ("cwd", class_info, info_proc_cmd_cwd, _("\
|
||
List current working directory of the process."),
|
||
&info_proc_cmdlist);
|
||
|
||
add_cmd ("cmdline", class_info, info_proc_cmd_cmdline, _("\
|
||
List command line arguments of the process."),
|
||
&info_proc_cmdlist);
|
||
|
||
add_cmd ("exe", class_info, info_proc_cmd_exe, _("\
|
||
List absolute filename for executable of the process."),
|
||
&info_proc_cmdlist);
|
||
|
||
add_cmd ("all", class_info, info_proc_cmd_all, _("\
|
||
List all available /proc info."),
|
||
&info_proc_cmdlist);
|
||
}
|