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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.
2350 lines
61 KiB
C
2350 lines
61 KiB
C
/* Darwin support for GDB, the GNU debugger.
|
||
Copyright (C) 2008-2018 Free Software Foundation, Inc.
|
||
|
||
Contributed by AdaCore.
|
||
|
||
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 "top.h"
|
||
#include "inferior.h"
|
||
#include "target.h"
|
||
#include "symfile.h"
|
||
#include "symtab.h"
|
||
#include "objfiles.h"
|
||
#include "gdbcmd.h"
|
||
#include "gdbcore.h"
|
||
#include "gdbthread.h"
|
||
#include "regcache.h"
|
||
#include "event-top.h"
|
||
#include "inf-loop.h"
|
||
#include <sys/stat.h>
|
||
#include "inf-child.h"
|
||
#include "value.h"
|
||
#include "arch-utils.h"
|
||
#include "bfd.h"
|
||
#include "bfd/mach-o.h"
|
||
|
||
#include <sys/ptrace.h>
|
||
#include <sys/signal.h>
|
||
#include <setjmp.h>
|
||
#include <sys/types.h>
|
||
#include <unistd.h>
|
||
#include <signal.h>
|
||
#include <ctype.h>
|
||
#include <sys/sysctl.h>
|
||
#include <sys/proc.h>
|
||
#include <libproc.h>
|
||
#include <sys/syscall.h>
|
||
#include <spawn.h>
|
||
|
||
#include <mach/mach_error.h>
|
||
#include <mach/mach_vm.h>
|
||
#include <mach/mach_init.h>
|
||
#include <mach/vm_map.h>
|
||
#include <mach/task.h>
|
||
#include <mach/mach_port.h>
|
||
#include <mach/thread_act.h>
|
||
#include <mach/port.h>
|
||
|
||
#include "darwin-nat.h"
|
||
#include "common/filestuff.h"
|
||
#include "nat/fork-inferior.h"
|
||
|
||
/* Quick overview.
|
||
Darwin kernel is Mach + BSD derived kernel. Note that they share the
|
||
same memory space and are linked together (ie there is no micro-kernel).
|
||
|
||
Although ptrace(2) is available on Darwin, it is not complete. We have
|
||
to use Mach calls to read and write memory and to modify registers. We
|
||
also use Mach to get inferior faults. As we cannot use select(2) or
|
||
signals with Mach port (the Mach communication channel), signals are
|
||
reported to gdb as an exception. Furthermore we detect death of the
|
||
inferior through a Mach notification message. This way we only wait
|
||
on Mach ports.
|
||
|
||
Some Mach documentation is available for Apple xnu source package or
|
||
from the web. */
|
||
|
||
|
||
#define PTRACE(CMD, PID, ADDR, SIG) \
|
||
darwin_ptrace(#CMD, CMD, (PID), (ADDR), (SIG))
|
||
|
||
static ptid_t darwin_wait (ptid_t ptid, struct target_waitstatus *status);
|
||
|
||
static void darwin_ptrace_me (void);
|
||
|
||
static void darwin_ptrace_him (int pid);
|
||
|
||
static void darwin_encode_reply (mig_reply_error_t *reply,
|
||
mach_msg_header_t *hdr, integer_t code);
|
||
|
||
static void darwin_setup_request_notification (struct inferior *inf);
|
||
static void darwin_deallocate_exception_ports (darwin_inferior *inf);
|
||
static void darwin_setup_exceptions (struct inferior *inf);
|
||
static void darwin_deallocate_threads (struct inferior *inf);
|
||
|
||
/* Target operations for Darwin. */
|
||
static struct target_ops *darwin_ops;
|
||
|
||
/* Task identifier of gdb. */
|
||
static task_t gdb_task;
|
||
|
||
/* A copy of mach_host_self (). */
|
||
mach_port_t darwin_host_self;
|
||
|
||
/* Exception port. */
|
||
mach_port_t darwin_ex_port;
|
||
|
||
/* Port set, to wait for answer on all ports. */
|
||
mach_port_t darwin_port_set;
|
||
|
||
/* Page size. */
|
||
static vm_size_t mach_page_size;
|
||
|
||
/* If Set, catch all mach exceptions (before they are converted to signals
|
||
by the kernel). */
|
||
static int enable_mach_exceptions;
|
||
|
||
/* Inferior that should report a fake stop event. */
|
||
static struct inferior *darwin_inf_fake_stop;
|
||
|
||
#define PAGE_TRUNC(x) ((x) & ~(mach_page_size - 1))
|
||
#define PAGE_ROUND(x) PAGE_TRUNC((x) + mach_page_size - 1)
|
||
|
||
/* This controls output of inferior debugging. */
|
||
static unsigned int darwin_debug_flag = 0;
|
||
|
||
/* Create a __TEXT __info_plist section in the executable so that gdb could
|
||
be signed. This is required to get an authorization for task_for_pid.
|
||
|
||
Once gdb is built, you must codesign it with any system-trusted signing
|
||
authority. See taskgated(8) for details. */
|
||
static const unsigned char info_plist[]
|
||
__attribute__ ((section ("__TEXT,__info_plist"),used)) =
|
||
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
|
||
"<!DOCTYPE plist PUBLIC \"-//Apple Computer//DTD PLIST 1.0//EN\""
|
||
" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n"
|
||
"<plist version=\"1.0\">\n"
|
||
"<dict>\n"
|
||
" <key>CFBundleIdentifier</key>\n"
|
||
" <string>org.gnu.gdb</string>\n"
|
||
" <key>CFBundleName</key>\n"
|
||
" <string>gdb</string>\n"
|
||
" <key>CFBundleVersion</key>\n"
|
||
" <string>1.0</string>\n"
|
||
" <key>SecTaskAccess</key>\n"
|
||
" <array>\n"
|
||
" <string>allowed</string>\n"
|
||
" <string>debug</string>\n"
|
||
" </array>\n"
|
||
"</dict>\n"
|
||
"</plist>\n";
|
||
|
||
static void inferior_debug (int level, const char *fmt, ...)
|
||
ATTRIBUTE_PRINTF (2, 3);
|
||
|
||
static void
|
||
inferior_debug (int level, const char *fmt, ...)
|
||
{
|
||
va_list ap;
|
||
|
||
if (darwin_debug_flag < level)
|
||
return;
|
||
|
||
va_start (ap, fmt);
|
||
printf_unfiltered (_("[%d inferior]: "), getpid ());
|
||
vprintf_unfiltered (fmt, ap);
|
||
va_end (ap);
|
||
}
|
||
|
||
void
|
||
mach_check_error (kern_return_t ret, const char *file,
|
||
unsigned int line, const char *func)
|
||
{
|
||
if (ret == KERN_SUCCESS)
|
||
return;
|
||
if (func == NULL)
|
||
func = _("[UNKNOWN]");
|
||
|
||
warning (_("Mach error at \"%s:%u\" in function \"%s\": %s (0x%lx)"),
|
||
file, line, func, mach_error_string (ret), (unsigned long) ret);
|
||
}
|
||
|
||
static const char *
|
||
unparse_exception_type (unsigned int i)
|
||
{
|
||
static char unknown_exception_buf[32];
|
||
|
||
switch (i)
|
||
{
|
||
case EXC_BAD_ACCESS:
|
||
return "EXC_BAD_ACCESS";
|
||
case EXC_BAD_INSTRUCTION:
|
||
return "EXC_BAD_INSTRUCTION";
|
||
case EXC_ARITHMETIC:
|
||
return "EXC_ARITHMETIC";
|
||
case EXC_EMULATION:
|
||
return "EXC_EMULATION";
|
||
case EXC_SOFTWARE:
|
||
return "EXC_SOFTWARE";
|
||
case EXC_BREAKPOINT:
|
||
return "EXC_BREAKPOINT";
|
||
case EXC_SYSCALL:
|
||
return "EXC_SYSCALL";
|
||
case EXC_MACH_SYSCALL:
|
||
return "EXC_MACH_SYSCALL";
|
||
case EXC_RPC_ALERT:
|
||
return "EXC_RPC_ALERT";
|
||
case EXC_CRASH:
|
||
return "EXC_CRASH";
|
||
default:
|
||
snprintf (unknown_exception_buf, 32, _("unknown (%d)"), i);
|
||
return unknown_exception_buf;
|
||
}
|
||
}
|
||
|
||
/* Set errno to zero, and then call ptrace with the given arguments.
|
||
If inferior debugging traces are on, then also print a debug
|
||
trace.
|
||
|
||
The returned value is the same as the value returned by ptrace,
|
||
except in the case where that value is -1 but errno is zero.
|
||
This case is documented to be a non-error situation, so we
|
||
return zero in that case. */
|
||
|
||
static int
|
||
darwin_ptrace (const char *name,
|
||
int request, int pid, caddr_t arg3, int arg4)
|
||
{
|
||
int ret;
|
||
|
||
errno = 0;
|
||
ret = ptrace (request, pid, arg3, arg4);
|
||
if (ret == -1 && errno == 0)
|
||
ret = 0;
|
||
|
||
inferior_debug (4, _("ptrace (%s, %d, 0x%lx, %d): %d (%s)\n"),
|
||
name, pid, (unsigned long) arg3, arg4, ret,
|
||
(ret != 0) ? safe_strerror (errno) : _("no error"));
|
||
return ret;
|
||
}
|
||
|
||
static int
|
||
cmp_thread_t (const void *l, const void *r)
|
||
{
|
||
thread_t tl = *(const thread_t *)l;
|
||
thread_t tr = *(const thread_t *)r;
|
||
return (int)(tl - tr);
|
||
}
|
||
|
||
static void
|
||
darwin_check_new_threads (struct inferior *inf)
|
||
{
|
||
kern_return_t kret;
|
||
thread_array_t thread_list;
|
||
unsigned int new_nbr;
|
||
unsigned int old_nbr;
|
||
unsigned int new_ix, old_ix;
|
||
darwin_inferior *darwin_inf = get_darwin_inferior (inf);
|
||
std::vector<darwin_thread_t *> new_thread_vec;
|
||
|
||
/* Get list of threads. */
|
||
kret = task_threads (darwin_inf->task, &thread_list, &new_nbr);
|
||
MACH_CHECK_ERROR (kret);
|
||
if (kret != KERN_SUCCESS)
|
||
return;
|
||
|
||
/* Sort the list. */
|
||
if (new_nbr > 1)
|
||
qsort (thread_list, new_nbr, sizeof (thread_t), cmp_thread_t);
|
||
|
||
old_nbr = darwin_inf->threads.size ();
|
||
|
||
/* Quick check for no changes. */
|
||
if (old_nbr == new_nbr)
|
||
{
|
||
size_t i;
|
||
|
||
for (i = 0; i < new_nbr; i++)
|
||
if (thread_list[i] != darwin_inf->threads[i]->gdb_port)
|
||
break;
|
||
if (i == new_nbr)
|
||
{
|
||
/* Deallocate ports. */
|
||
for (i = 0; i < new_nbr; i++)
|
||
{
|
||
kret = mach_port_deallocate (mach_task_self (), thread_list[i]);
|
||
MACH_CHECK_ERROR (kret);
|
||
}
|
||
|
||
/* Deallocate the buffer. */
|
||
kret = vm_deallocate (gdb_task, (vm_address_t) thread_list,
|
||
new_nbr * sizeof (int));
|
||
MACH_CHECK_ERROR (kret);
|
||
|
||
return;
|
||
}
|
||
}
|
||
|
||
/* Full handling: detect new threads, remove dead threads. */
|
||
|
||
new_thread_vec.reserve (new_nbr);
|
||
|
||
for (new_ix = 0, old_ix = 0; new_ix < new_nbr || old_ix < old_nbr;)
|
||
{
|
||
thread_t new_id = (new_ix < new_nbr) ? thread_list[new_ix] : THREAD_NULL;
|
||
darwin_thread_t *old
|
||
= (old_ix < old_nbr) ? darwin_inf->threads[old_ix] : NULL;
|
||
thread_t old_id = old != NULL ? old->gdb_port : THREAD_NULL;
|
||
|
||
inferior_debug
|
||
(12, _(" new_ix:%d/%d, old_ix:%d/%d, new_id:0x%x old_id:0x%x\n"),
|
||
new_ix, new_nbr, old_ix, old_nbr, new_id, old_id);
|
||
|
||
if (old_id == new_id)
|
||
{
|
||
/* Thread still exist. */
|
||
new_thread_vec.push_back (old);
|
||
new_ix++;
|
||
old_ix++;
|
||
|
||
/* Deallocate the port. */
|
||
kret = mach_port_deallocate (gdb_task, new_id);
|
||
MACH_CHECK_ERROR (kret);
|
||
|
||
continue;
|
||
}
|
||
if (new_ix < new_nbr && new_id == MACH_PORT_DEAD)
|
||
{
|
||
/* Ignore dead ports.
|
||
In some weird cases, we might get dead ports. They should
|
||
correspond to dead thread so they could safely be ignored. */
|
||
new_ix++;
|
||
continue;
|
||
}
|
||
if (new_ix < new_nbr && (old_ix == old_nbr || new_id < old_id))
|
||
{
|
||
/* A thread was created. */
|
||
darwin_thread_info *pti = new darwin_thread_info;
|
||
|
||
pti->gdb_port = new_id;
|
||
pti->msg_state = DARWIN_RUNNING;
|
||
|
||
/* Add the new thread. */
|
||
add_thread_with_info (ptid_build (inf->pid, 0, new_id), pti);
|
||
new_thread_vec.push_back (pti);
|
||
new_ix++;
|
||
continue;
|
||
}
|
||
if (old_ix < old_nbr && (new_ix == new_nbr || new_id > old_id))
|
||
{
|
||
/* A thread was removed. */
|
||
delete_thread (ptid_build (inf->pid, 0, old_id));
|
||
kret = mach_port_deallocate (gdb_task, old_id);
|
||
MACH_CHECK_ERROR (kret);
|
||
old_ix++;
|
||
continue;
|
||
}
|
||
gdb_assert_not_reached ("unexpected thread case");
|
||
}
|
||
|
||
darwin_inf->threads = std::move (new_thread_vec);
|
||
|
||
/* Deallocate the buffer. */
|
||
kret = vm_deallocate (gdb_task, (vm_address_t) thread_list,
|
||
new_nbr * sizeof (int));
|
||
MACH_CHECK_ERROR (kret);
|
||
}
|
||
|
||
static int
|
||
find_inferior_task_it (struct inferior *inf, void *port_ptr)
|
||
{
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
return priv->task == *(task_t *)port_ptr;
|
||
}
|
||
|
||
static int
|
||
find_inferior_pid_it (struct inferior *inf, void *pid_ptr)
|
||
{
|
||
return inf->pid == *(int *)pid_ptr;
|
||
}
|
||
|
||
/* Return an inferior by task port. */
|
||
static struct inferior *
|
||
darwin_find_inferior_by_task (task_t port)
|
||
{
|
||
return iterate_over_inferiors (&find_inferior_task_it, &port);
|
||
}
|
||
|
||
/* Return an inferior by pid port. */
|
||
static struct inferior *
|
||
darwin_find_inferior_by_pid (int pid)
|
||
{
|
||
return iterate_over_inferiors (&find_inferior_pid_it, &pid);
|
||
}
|
||
|
||
/* Return a thread by port. */
|
||
static darwin_thread_t *
|
||
darwin_find_thread (struct inferior *inf, thread_t thread)
|
||
{
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
for (darwin_thread_t *t : priv->threads)
|
||
{
|
||
if (t->gdb_port == thread)
|
||
return t;
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Suspend (ie stop) an inferior at Mach level. */
|
||
|
||
static void
|
||
darwin_suspend_inferior (struct inferior *inf)
|
||
{
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
if (!priv->suspended)
|
||
{
|
||
kern_return_t kret;
|
||
|
||
kret = task_suspend (priv->task);
|
||
MACH_CHECK_ERROR (kret);
|
||
|
||
priv->suspended = 1;
|
||
}
|
||
}
|
||
|
||
/* Resume an inferior at Mach level. */
|
||
|
||
static void
|
||
darwin_resume_inferior (struct inferior *inf)
|
||
{
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
if (priv->suspended)
|
||
{
|
||
kern_return_t kret;
|
||
|
||
kret = task_resume (priv->task);
|
||
MACH_CHECK_ERROR (kret);
|
||
|
||
priv->suspended = 0;
|
||
}
|
||
}
|
||
|
||
/* Iterator functions. */
|
||
|
||
static int
|
||
darwin_suspend_inferior_it (struct inferior *inf, void *arg)
|
||
{
|
||
darwin_suspend_inferior (inf);
|
||
darwin_check_new_threads (inf);
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
darwin_resume_inferior_it (struct inferior *inf, void *arg)
|
||
{
|
||
darwin_resume_inferior (inf);
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
darwin_dump_message (mach_msg_header_t *hdr, int disp_body)
|
||
{
|
||
printf_unfiltered (_("message header:\n"));
|
||
printf_unfiltered (_(" bits: 0x%x\n"), hdr->msgh_bits);
|
||
printf_unfiltered (_(" size: 0x%x\n"), hdr->msgh_size);
|
||
printf_unfiltered (_(" remote-port: 0x%x\n"), hdr->msgh_remote_port);
|
||
printf_unfiltered (_(" local-port: 0x%x\n"), hdr->msgh_local_port);
|
||
printf_unfiltered (_(" reserved: 0x%x\n"), hdr->msgh_reserved);
|
||
printf_unfiltered (_(" id: 0x%x\n"), hdr->msgh_id);
|
||
|
||
if (disp_body)
|
||
{
|
||
const unsigned char *data;
|
||
const unsigned int *ldata;
|
||
int size;
|
||
int i;
|
||
|
||
data = (unsigned char *)(hdr + 1);
|
||
size = hdr->msgh_size - sizeof (mach_msg_header_t);
|
||
|
||
if (hdr->msgh_bits & MACH_MSGH_BITS_COMPLEX)
|
||
{
|
||
mach_msg_body_t *bod = (mach_msg_body_t*)data;
|
||
mach_msg_port_descriptor_t *desc =
|
||
(mach_msg_port_descriptor_t *)(bod + 1);
|
||
int k;
|
||
NDR_record_t *ndr;
|
||
printf_unfiltered (_("body: descriptor_count=%u\n"),
|
||
bod->msgh_descriptor_count);
|
||
data += sizeof (mach_msg_body_t);
|
||
size -= sizeof (mach_msg_body_t);
|
||
for (k = 0; k < bod->msgh_descriptor_count; k++)
|
||
switch (desc[k].type)
|
||
{
|
||
case MACH_MSG_PORT_DESCRIPTOR:
|
||
printf_unfiltered
|
||
(_(" descr %d: type=%u (port) name=0x%x, dispo=%d\n"),
|
||
k, desc[k].type, desc[k].name, desc[k].disposition);
|
||
break;
|
||
default:
|
||
printf_unfiltered (_(" descr %d: type=%u\n"),
|
||
k, desc[k].type);
|
||
break;
|
||
}
|
||
data += bod->msgh_descriptor_count
|
||
* sizeof (mach_msg_port_descriptor_t);
|
||
size -= bod->msgh_descriptor_count
|
||
* sizeof (mach_msg_port_descriptor_t);
|
||
ndr = (NDR_record_t *)(desc + bod->msgh_descriptor_count);
|
||
printf_unfiltered
|
||
(_("NDR: mig=%02x if=%02x encod=%02x "
|
||
"int=%02x char=%02x float=%02x\n"),
|
||
ndr->mig_vers, ndr->if_vers, ndr->mig_encoding,
|
||
ndr->int_rep, ndr->char_rep, ndr->float_rep);
|
||
data += sizeof (NDR_record_t);
|
||
size -= sizeof (NDR_record_t);
|
||
}
|
||
|
||
printf_unfiltered (_(" data:"));
|
||
ldata = (const unsigned int *)data;
|
||
for (i = 0; i < size / sizeof (unsigned int); i++)
|
||
printf_unfiltered (" %08x", ldata[i]);
|
||
printf_unfiltered (_("\n"));
|
||
}
|
||
}
|
||
|
||
/* Adjust inferior data when a new task was created. */
|
||
|
||
static struct inferior *
|
||
darwin_find_new_inferior (task_t task_port, thread_t thread_port)
|
||
{
|
||
int task_pid;
|
||
struct inferior *inf;
|
||
kern_return_t kret;
|
||
mach_port_t prev;
|
||
|
||
/* Find the corresponding pid. */
|
||
kret = pid_for_task (task_port, &task_pid);
|
||
if (kret != KERN_SUCCESS)
|
||
{
|
||
MACH_CHECK_ERROR (kret);
|
||
return NULL;
|
||
}
|
||
|
||
/* Find the inferior for this pid. */
|
||
inf = darwin_find_inferior_by_pid (task_pid);
|
||
if (inf == NULL)
|
||
return NULL;
|
||
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
/* Deallocate saved exception ports. */
|
||
darwin_deallocate_exception_ports (priv);
|
||
|
||
/* No need to remove dead_name notification, but still... */
|
||
kret = mach_port_request_notification (gdb_task, priv->task,
|
||
MACH_NOTIFY_DEAD_NAME, 0,
|
||
MACH_PORT_NULL,
|
||
MACH_MSG_TYPE_MAKE_SEND_ONCE,
|
||
&prev);
|
||
if (kret != KERN_INVALID_ARGUMENT)
|
||
MACH_CHECK_ERROR (kret);
|
||
|
||
/* Replace old task port. */
|
||
kret = mach_port_deallocate (gdb_task, priv->task);
|
||
MACH_CHECK_ERROR (kret);
|
||
priv->task = task_port;
|
||
|
||
darwin_setup_request_notification (inf);
|
||
darwin_setup_exceptions (inf);
|
||
|
||
return inf;
|
||
}
|
||
|
||
/* Check data representation. */
|
||
|
||
static int
|
||
darwin_check_message_ndr (NDR_record_t *ndr)
|
||
{
|
||
if (ndr->mig_vers != NDR_PROTOCOL_2_0
|
||
|| ndr->if_vers != NDR_PROTOCOL_2_0
|
||
|| ndr->mig_encoding != NDR_record.mig_encoding
|
||
|| ndr->int_rep != NDR_record.int_rep
|
||
|| ndr->char_rep != NDR_record.char_rep
|
||
|| ndr->float_rep != NDR_record.float_rep)
|
||
return -1;
|
||
return 0;
|
||
}
|
||
|
||
/* Decode an exception message. */
|
||
|
||
static int
|
||
darwin_decode_exception_message (mach_msg_header_t *hdr,
|
||
struct inferior **pinf,
|
||
darwin_thread_t **pthread)
|
||
{
|
||
mach_msg_body_t *bod = (mach_msg_body_t*)(hdr + 1);
|
||
mach_msg_port_descriptor_t *desc = (mach_msg_port_descriptor_t *)(bod + 1);
|
||
NDR_record_t *ndr;
|
||
integer_t *data;
|
||
struct inferior *inf;
|
||
darwin_thread_t *thread;
|
||
task_t task_port;
|
||
thread_t thread_port;
|
||
kern_return_t kret;
|
||
int i;
|
||
|
||
/* Check message destination. */
|
||
if (hdr->msgh_local_port != darwin_ex_port)
|
||
return -1;
|
||
|
||
/* Check message header. */
|
||
if (!(hdr->msgh_bits & MACH_MSGH_BITS_COMPLEX))
|
||
return -1;
|
||
|
||
/* Check descriptors. */
|
||
if (hdr->msgh_size < (sizeof (*hdr) + sizeof (*bod) + 2 * sizeof (*desc)
|
||
+ sizeof (*ndr) + 2 * sizeof (integer_t))
|
||
|| bod->msgh_descriptor_count != 2
|
||
|| desc[0].type != MACH_MSG_PORT_DESCRIPTOR
|
||
|| desc[0].disposition != MACH_MSG_TYPE_MOVE_SEND
|
||
|| desc[1].type != MACH_MSG_PORT_DESCRIPTOR
|
||
|| desc[1].disposition != MACH_MSG_TYPE_MOVE_SEND)
|
||
return -1;
|
||
|
||
/* Check data representation. */
|
||
ndr = (NDR_record_t *)(desc + 2);
|
||
if (darwin_check_message_ndr (ndr) != 0)
|
||
return -1;
|
||
|
||
/* Ok, the hard work. */
|
||
data = (integer_t *)(ndr + 1);
|
||
|
||
task_port = desc[1].name;
|
||
thread_port = desc[0].name;
|
||
|
||
/* Find process by port. */
|
||
inf = darwin_find_inferior_by_task (task_port);
|
||
*pinf = inf;
|
||
|
||
if (inf == NULL && data[0] == EXC_SOFTWARE && data[1] == 2
|
||
&& data[2] == EXC_SOFT_SIGNAL && data[3] == SIGTRAP)
|
||
{
|
||
/* Not a known inferior, but a sigtrap. This happens on darwin 16.1.0,
|
||
as a new Mach task is created when a process exec. */
|
||
inf = darwin_find_new_inferior (task_port, thread_port);
|
||
*pinf = inf;
|
||
|
||
if (inf == NULL)
|
||
{
|
||
/* Deallocate task_port, unless it was saved. */
|
||
kret = mach_port_deallocate (mach_task_self (), task_port);
|
||
MACH_CHECK_ERROR (kret);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* We got new rights to the task, get rid of it. Do not get rid of
|
||
thread right, as we will need it to find the thread. */
|
||
kret = mach_port_deallocate (mach_task_self (), task_port);
|
||
MACH_CHECK_ERROR (kret);
|
||
}
|
||
|
||
if (inf == NULL)
|
||
{
|
||
/* Not a known inferior. This could happen if the child fork, as
|
||
the created process will inherit its exception port.
|
||
FIXME: should the exception port be restored ? */
|
||
kern_return_t kret;
|
||
mig_reply_error_t reply;
|
||
|
||
inferior_debug
|
||
(4, _("darwin_decode_exception_message: unknown task 0x%x\n"),
|
||
task_port);
|
||
|
||
/* Free thread port (we don't know it). */
|
||
kret = mach_port_deallocate (mach_task_self (), thread_port);
|
||
MACH_CHECK_ERROR (kret);
|
||
|
||
darwin_encode_reply (&reply, hdr, KERN_SUCCESS);
|
||
|
||
kret = mach_msg (&reply.Head, MACH_SEND_MSG | MACH_SEND_INTERRUPT,
|
||
reply.Head.msgh_size, 0,
|
||
MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE,
|
||
MACH_PORT_NULL);
|
||
MACH_CHECK_ERROR (kret);
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Find thread by port. */
|
||
/* Check for new threads. Do it early so that the port in the exception
|
||
message can be deallocated. */
|
||
darwin_check_new_threads (inf);
|
||
|
||
/* Free the thread port (as gdb knows the thread, it has already has a right
|
||
for it, so this just decrement a reference counter). */
|
||
kret = mach_port_deallocate (mach_task_self (), thread_port);
|
||
MACH_CHECK_ERROR (kret);
|
||
|
||
thread = darwin_find_thread (inf, thread_port);
|
||
if (thread == NULL)
|
||
return -1;
|
||
*pthread = thread;
|
||
|
||
/* The thread should be running. However we have observed cases where a
|
||
thread got a SIGTTIN message after being stopped. */
|
||
gdb_assert (thread->msg_state != DARWIN_MESSAGE);
|
||
|
||
/* Finish decoding. */
|
||
thread->event.header = *hdr;
|
||
thread->event.thread_port = thread_port;
|
||
thread->event.task_port = task_port;
|
||
thread->event.ex_type = data[0];
|
||
thread->event.data_count = data[1];
|
||
|
||
if (hdr->msgh_size < (sizeof (*hdr) + sizeof (*bod) + 2 * sizeof (*desc)
|
||
+ sizeof (*ndr) + 2 * sizeof (integer_t)
|
||
+ data[1] * sizeof (integer_t)))
|
||
return -1;
|
||
for (i = 0; i < data[1]; i++)
|
||
thread->event.ex_data[i] = data[2 + i];
|
||
|
||
thread->msg_state = DARWIN_MESSAGE;
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Decode dead_name notify message. */
|
||
|
||
static int
|
||
darwin_decode_notify_message (mach_msg_header_t *hdr, struct inferior **pinf)
|
||
{
|
||
NDR_record_t *ndr = (NDR_record_t *)(hdr + 1);
|
||
integer_t *data = (integer_t *)(ndr + 1);
|
||
struct inferior *inf;
|
||
darwin_thread_t *thread;
|
||
task_t task_port;
|
||
thread_t thread_port;
|
||
kern_return_t kret;
|
||
int i;
|
||
|
||
/* Check message header. */
|
||
if (hdr->msgh_bits & MACH_MSGH_BITS_COMPLEX)
|
||
return -1;
|
||
|
||
/* Check descriptors. */
|
||
if (hdr->msgh_size < (sizeof (*hdr) + sizeof (*ndr) + sizeof (integer_t)))
|
||
return -2;
|
||
|
||
/* Check data representation. */
|
||
if (darwin_check_message_ndr (ndr) != 0)
|
||
return -3;
|
||
|
||
task_port = data[0];
|
||
|
||
/* Find process by port. */
|
||
inf = darwin_find_inferior_by_task (task_port);
|
||
*pinf = inf;
|
||
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
/* Check message destination. */
|
||
if (inf != NULL && hdr->msgh_local_port != priv->notify_port)
|
||
return -4;
|
||
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
darwin_encode_reply (mig_reply_error_t *reply, mach_msg_header_t *hdr,
|
||
integer_t code)
|
||
{
|
||
mach_msg_header_t *rh = &reply->Head;
|
||
|
||
rh->msgh_bits = MACH_MSGH_BITS (MACH_MSGH_BITS_REMOTE (hdr->msgh_bits), 0);
|
||
rh->msgh_remote_port = hdr->msgh_remote_port;
|
||
rh->msgh_size = (mach_msg_size_t) sizeof (mig_reply_error_t);
|
||
rh->msgh_local_port = MACH_PORT_NULL;
|
||
rh->msgh_id = hdr->msgh_id + 100;
|
||
|
||
reply->NDR = NDR_record;
|
||
reply->RetCode = code;
|
||
}
|
||
|
||
static void
|
||
darwin_send_reply (struct inferior *inf, darwin_thread_t *thread)
|
||
{
|
||
kern_return_t kret;
|
||
mig_reply_error_t reply;
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
darwin_encode_reply (&reply, &thread->event.header, KERN_SUCCESS);
|
||
|
||
kret = mach_msg (&reply.Head, MACH_SEND_MSG | MACH_SEND_INTERRUPT,
|
||
reply.Head.msgh_size, 0,
|
||
MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE,
|
||
MACH_PORT_NULL);
|
||
MACH_CHECK_ERROR (kret);
|
||
|
||
priv->pending_messages--;
|
||
}
|
||
|
||
static void
|
||
darwin_resume_thread (struct inferior *inf, darwin_thread_t *thread,
|
||
int step, int nsignal)
|
||
{
|
||
kern_return_t kret;
|
||
int res;
|
||
|
||
inferior_debug
|
||
(3, _("darwin_resume_thread: state=%d, thread=0x%x, step=%d nsignal=%d\n"),
|
||
thread->msg_state, thread->gdb_port, step, nsignal);
|
||
|
||
switch (thread->msg_state)
|
||
{
|
||
case DARWIN_MESSAGE:
|
||
if (thread->event.ex_type == EXC_SOFTWARE
|
||
&& thread->event.ex_data[0] == EXC_SOFT_SIGNAL)
|
||
{
|
||
/* Either deliver a new signal or cancel the signal received. */
|
||
res = PTRACE (PT_THUPDATE, inf->pid,
|
||
(caddr_t) (uintptr_t) thread->gdb_port, nsignal);
|
||
if (res < 0)
|
||
inferior_debug (1, _("ptrace THUP: res=%d\n"), res);
|
||
}
|
||
else if (nsignal)
|
||
{
|
||
/* Note: ptrace is allowed only if the process is stopped.
|
||
Directly send the signal to the thread. */
|
||
res = syscall (SYS___pthread_kill, thread->gdb_port, nsignal);
|
||
inferior_debug (4, _("darwin_resume_thread: kill 0x%x %d: %d\n"),
|
||
thread->gdb_port, nsignal, res);
|
||
thread->signaled = 1;
|
||
}
|
||
|
||
/* Set or reset single step. */
|
||
inferior_debug (4, _("darwin_set_sstep (thread=0x%x, enable=%d)\n"),
|
||
thread->gdb_port, step);
|
||
darwin_set_sstep (thread->gdb_port, step);
|
||
thread->single_step = step;
|
||
|
||
darwin_send_reply (inf, thread);
|
||
thread->msg_state = DARWIN_RUNNING;
|
||
break;
|
||
|
||
case DARWIN_RUNNING:
|
||
break;
|
||
|
||
case DARWIN_STOPPED:
|
||
kret = thread_resume (thread->gdb_port);
|
||
MACH_CHECK_ERROR (kret);
|
||
|
||
thread->msg_state = DARWIN_RUNNING;
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Resume all threads of the inferior. */
|
||
|
||
static void
|
||
darwin_resume_inferior_threads (struct inferior *inf, int step, int nsignal)
|
||
{
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
for (darwin_thread_t *thread : priv->threads)
|
||
darwin_resume_thread (inf, thread, step, nsignal);
|
||
}
|
||
|
||
struct resume_inferior_threads_param
|
||
{
|
||
int step;
|
||
int nsignal;
|
||
};
|
||
|
||
static int
|
||
darwin_resume_inferior_threads_it (struct inferior *inf, void *param)
|
||
{
|
||
int step = ((struct resume_inferior_threads_param *)param)->step;
|
||
int nsignal = ((struct resume_inferior_threads_param *)param)->nsignal;
|
||
|
||
darwin_resume_inferior_threads (inf, step, nsignal);
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Suspend all threads of INF. */
|
||
|
||
static void
|
||
darwin_suspend_inferior_threads (struct inferior *inf)
|
||
{
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
for (darwin_thread_t *thread : priv->threads)
|
||
{
|
||
switch (thread->msg_state)
|
||
{
|
||
case DARWIN_STOPPED:
|
||
case DARWIN_MESSAGE:
|
||
break;
|
||
case DARWIN_RUNNING:
|
||
{
|
||
kern_return_t kret = thread_suspend (thread->gdb_port);
|
||
MACH_CHECK_ERROR (kret);
|
||
thread->msg_state = DARWIN_STOPPED;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
darwin_nat_target::resume (ptid_t ptid, int step, enum gdb_signal signal)
|
||
{
|
||
struct target_waitstatus status;
|
||
int pid;
|
||
|
||
kern_return_t kret;
|
||
int res;
|
||
int nsignal;
|
||
struct inferior *inf;
|
||
|
||
inferior_debug
|
||
(2, _("darwin_resume: pid=%d, tid=0x%lx, step=%d, signal=%d\n"),
|
||
ptid_get_pid (ptid), ptid_get_tid (ptid), step, signal);
|
||
|
||
if (signal == GDB_SIGNAL_0)
|
||
nsignal = 0;
|
||
else
|
||
nsignal = gdb_signal_to_host (signal);
|
||
|
||
/* Don't try to single step all threads. */
|
||
if (step)
|
||
ptid = inferior_ptid;
|
||
|
||
/* minus_one_ptid is RESUME_ALL. */
|
||
if (ptid_equal (ptid, minus_one_ptid))
|
||
{
|
||
struct resume_inferior_threads_param param;
|
||
|
||
param.nsignal = nsignal;
|
||
param.step = step;
|
||
|
||
/* Resume threads. */
|
||
iterate_over_inferiors (darwin_resume_inferior_threads_it, ¶m);
|
||
/* Resume tasks. */
|
||
iterate_over_inferiors (darwin_resume_inferior_it, NULL);
|
||
}
|
||
else
|
||
{
|
||
struct inferior *inf = find_inferior_ptid (ptid);
|
||
long tid = ptid_get_tid (ptid);
|
||
|
||
/* Stop the inferior (should be useless). */
|
||
darwin_suspend_inferior (inf);
|
||
|
||
if (tid == 0)
|
||
darwin_resume_inferior_threads (inf, step, nsignal);
|
||
else
|
||
{
|
||
darwin_thread_t *thread;
|
||
|
||
/* Suspend threads of the task. */
|
||
darwin_suspend_inferior_threads (inf);
|
||
|
||
/* Resume the selected thread. */
|
||
thread = darwin_find_thread (inf, tid);
|
||
gdb_assert (thread);
|
||
darwin_resume_thread (inf, thread, step, nsignal);
|
||
}
|
||
|
||
/* Resume the task. */
|
||
darwin_resume_inferior (inf);
|
||
}
|
||
}
|
||
|
||
static ptid_t
|
||
darwin_decode_message (mach_msg_header_t *hdr,
|
||
darwin_thread_t **pthread,
|
||
struct inferior **pinf,
|
||
struct target_waitstatus *status)
|
||
{
|
||
darwin_thread_t *thread;
|
||
struct inferior *inf;
|
||
|
||
/* Exception message. 2401 == 0x961 is exc. */
|
||
if (hdr->msgh_id == 2401)
|
||
{
|
||
int res;
|
||
|
||
/* Decode message. */
|
||
res = darwin_decode_exception_message (hdr, &inf, &thread);
|
||
|
||
if (res < 0)
|
||
{
|
||
/* Should not happen... */
|
||
printf_unfiltered
|
||
(_("darwin_wait: ill-formatted message (id=0x%x)\n"), hdr->msgh_id);
|
||
/* FIXME: send a failure reply? */
|
||
status->kind = TARGET_WAITKIND_IGNORE;
|
||
return minus_one_ptid;
|
||
}
|
||
if (inf == NULL)
|
||
{
|
||
status->kind = TARGET_WAITKIND_IGNORE;
|
||
return minus_one_ptid;
|
||
}
|
||
*pinf = inf;
|
||
*pthread = thread;
|
||
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
priv->pending_messages++;
|
||
|
||
status->kind = TARGET_WAITKIND_STOPPED;
|
||
thread->msg_state = DARWIN_MESSAGE;
|
||
|
||
inferior_debug (4, _("darwin_wait: thread=0x%x, got %s\n"),
|
||
thread->gdb_port,
|
||
unparse_exception_type (thread->event.ex_type));
|
||
|
||
switch (thread->event.ex_type)
|
||
{
|
||
case EXC_BAD_ACCESS:
|
||
status->value.sig = GDB_EXC_BAD_ACCESS;
|
||
break;
|
||
case EXC_BAD_INSTRUCTION:
|
||
status->value.sig = GDB_EXC_BAD_INSTRUCTION;
|
||
break;
|
||
case EXC_ARITHMETIC:
|
||
status->value.sig = GDB_EXC_ARITHMETIC;
|
||
break;
|
||
case EXC_EMULATION:
|
||
status->value.sig = GDB_EXC_EMULATION;
|
||
break;
|
||
case EXC_SOFTWARE:
|
||
if (thread->event.ex_data[0] == EXC_SOFT_SIGNAL)
|
||
{
|
||
status->value.sig =
|
||
gdb_signal_from_host (thread->event.ex_data[1]);
|
||
inferior_debug (5, _(" (signal %d: %s)\n"),
|
||
thread->event.ex_data[1],
|
||
gdb_signal_to_name (status->value.sig));
|
||
|
||
/* If the thread is stopped because it has received a signal
|
||
that gdb has just sent, continue. */
|
||
if (thread->signaled)
|
||
{
|
||
thread->signaled = 0;
|
||
darwin_send_reply (inf, thread);
|
||
thread->msg_state = DARWIN_RUNNING;
|
||
status->kind = TARGET_WAITKIND_IGNORE;
|
||
}
|
||
}
|
||
else
|
||
status->value.sig = GDB_EXC_SOFTWARE;
|
||
break;
|
||
case EXC_BREAKPOINT:
|
||
/* Many internal GDB routines expect breakpoints to be reported
|
||
as GDB_SIGNAL_TRAP, and will report GDB_EXC_BREAKPOINT
|
||
as a spurious signal. */
|
||
status->value.sig = GDB_SIGNAL_TRAP;
|
||
break;
|
||
default:
|
||
status->value.sig = GDB_SIGNAL_UNKNOWN;
|
||
break;
|
||
}
|
||
|
||
return ptid_build (inf->pid, 0, thread->gdb_port);
|
||
}
|
||
else if (hdr->msgh_id == 0x48)
|
||
{
|
||
/* MACH_NOTIFY_DEAD_NAME: notification for exit. */
|
||
int res;
|
||
|
||
res = darwin_decode_notify_message (hdr, &inf);
|
||
|
||
if (res < 0)
|
||
{
|
||
/* Should not happen... */
|
||
printf_unfiltered
|
||
(_("darwin_wait: ill-formatted message (id=0x%x, res=%d)\n"),
|
||
hdr->msgh_id, res);
|
||
}
|
||
|
||
*pinf = NULL;
|
||
*pthread = NULL;
|
||
|
||
if (res < 0 || inf == NULL)
|
||
{
|
||
status->kind = TARGET_WAITKIND_IGNORE;
|
||
return minus_one_ptid;
|
||
}
|
||
|
||
if (inf != NULL)
|
||
{
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
if (!priv->no_ptrace)
|
||
{
|
||
pid_t res;
|
||
int wstatus;
|
||
|
||
res = wait4 (inf->pid, &wstatus, 0, NULL);
|
||
if (res < 0 || res != inf->pid)
|
||
{
|
||
printf_unfiltered (_("wait4: res=%d: %s\n"),
|
||
res, safe_strerror (errno));
|
||
status->kind = TARGET_WAITKIND_IGNORE;
|
||
return minus_one_ptid;
|
||
}
|
||
if (WIFEXITED (wstatus))
|
||
{
|
||
status->kind = TARGET_WAITKIND_EXITED;
|
||
status->value.integer = WEXITSTATUS (wstatus);
|
||
}
|
||
else
|
||
{
|
||
status->kind = TARGET_WAITKIND_SIGNALLED;
|
||
status->value.sig = gdb_signal_from_host (WTERMSIG (wstatus));
|
||
}
|
||
|
||
inferior_debug (4, _("darwin_wait: pid=%d exit, status=0x%x\n"),
|
||
res, wstatus);
|
||
|
||
/* Looks necessary on Leopard and harmless... */
|
||
wait4 (inf->pid, &wstatus, 0, NULL);
|
||
|
||
inferior_ptid = ptid_build (inf->pid, 0, 0);
|
||
return inferior_ptid;
|
||
}
|
||
else
|
||
{
|
||
inferior_debug (4, _("darwin_wait: pid=%d\n"), inf->pid);
|
||
status->kind = TARGET_WAITKIND_EXITED;
|
||
status->value.integer = 0; /* Don't know. */
|
||
return ptid_build (inf->pid, 0, 0);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Unknown message. */
|
||
warning (_("darwin: got unknown message, id: 0x%x"), hdr->msgh_id);
|
||
status->kind = TARGET_WAITKIND_IGNORE;
|
||
return minus_one_ptid;
|
||
}
|
||
|
||
static int
|
||
cancel_breakpoint (ptid_t ptid)
|
||
{
|
||
/* Arrange for a breakpoint to be hit again later. We will handle
|
||
the current event, eventually we will resume this thread, and this
|
||
breakpoint will trap again.
|
||
|
||
If we do not do this, then we run the risk that the user will
|
||
delete or disable the breakpoint, but the thread will have already
|
||
tripped on it. */
|
||
|
||
struct regcache *regcache = get_thread_regcache (ptid);
|
||
struct gdbarch *gdbarch = regcache->arch ();
|
||
CORE_ADDR pc;
|
||
|
||
pc = regcache_read_pc (regcache) - gdbarch_decr_pc_after_break (gdbarch);
|
||
if (breakpoint_inserted_here_p (regcache->aspace (), pc))
|
||
{
|
||
inferior_debug (4, "cancel_breakpoint for thread 0x%lx\n",
|
||
(unsigned long) ptid_get_tid (ptid));
|
||
|
||
/* Back up the PC if necessary. */
|
||
if (gdbarch_decr_pc_after_break (gdbarch))
|
||
regcache_write_pc (regcache, pc);
|
||
|
||
return 1;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
static ptid_t
|
||
darwin_wait (ptid_t ptid, struct target_waitstatus *status)
|
||
{
|
||
kern_return_t kret;
|
||
union
|
||
{
|
||
mach_msg_header_t hdr;
|
||
char data[0x100];
|
||
} msgin;
|
||
mach_msg_header_t *hdr = &msgin.hdr;
|
||
ptid_t res;
|
||
darwin_thread_t *thread;
|
||
struct inferior *inf;
|
||
|
||
inferior_debug
|
||
(2, _("darwin_wait: waiting for a message pid=%d thread=%lx\n"),
|
||
ptid_get_pid (ptid), ptid_get_tid (ptid));
|
||
|
||
/* Handle fake stop events at first. */
|
||
if (darwin_inf_fake_stop != NULL)
|
||
{
|
||
inf = darwin_inf_fake_stop;
|
||
darwin_inf_fake_stop = NULL;
|
||
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
status->kind = TARGET_WAITKIND_STOPPED;
|
||
status->value.sig = GDB_SIGNAL_TRAP;
|
||
thread = priv->threads[0];
|
||
thread->msg_state = DARWIN_STOPPED;
|
||
return ptid_build (inf->pid, 0, thread->gdb_port);
|
||
}
|
||
|
||
do
|
||
{
|
||
/* set_sigint_trap (); */
|
||
|
||
/* Wait for a message. */
|
||
kret = mach_msg (&msgin.hdr, MACH_RCV_MSG | MACH_RCV_INTERRUPT, 0,
|
||
sizeof (msgin.data), darwin_port_set, 0, MACH_PORT_NULL);
|
||
|
||
/* clear_sigint_trap (); */
|
||
|
||
if (kret == MACH_RCV_INTERRUPTED)
|
||
{
|
||
status->kind = TARGET_WAITKIND_IGNORE;
|
||
return minus_one_ptid;
|
||
}
|
||
|
||
if (kret != MACH_MSG_SUCCESS)
|
||
{
|
||
inferior_debug (5, _("mach_msg: ret=0x%x\n"), kret);
|
||
status->kind = TARGET_WAITKIND_SPURIOUS;
|
||
return minus_one_ptid;
|
||
}
|
||
|
||
/* Debug: display message. */
|
||
if (darwin_debug_flag > 10)
|
||
darwin_dump_message (hdr, darwin_debug_flag > 11);
|
||
|
||
res = darwin_decode_message (hdr, &thread, &inf, status);
|
||
if (ptid_equal (res, minus_one_ptid))
|
||
continue;
|
||
|
||
/* Early return in case an inferior has exited. */
|
||
if (inf == NULL)
|
||
return res;
|
||
}
|
||
while (status->kind == TARGET_WAITKIND_IGNORE);
|
||
|
||
/* Stop all tasks. */
|
||
iterate_over_inferiors (darwin_suspend_inferior_it, NULL);
|
||
|
||
/* Read pending messages. */
|
||
while (1)
|
||
{
|
||
struct target_waitstatus status2;
|
||
ptid_t ptid2;
|
||
|
||
kret = mach_msg (&msgin.hdr,
|
||
MACH_RCV_MSG | MACH_RCV_TIMEOUT, 0,
|
||
sizeof (msgin.data), darwin_port_set, 1, MACH_PORT_NULL);
|
||
|
||
if (kret == MACH_RCV_TIMED_OUT)
|
||
break;
|
||
if (kret != MACH_MSG_SUCCESS)
|
||
{
|
||
inferior_debug
|
||
(5, _("darwin_wait: mach_msg(pending) ret=0x%x\n"), kret);
|
||
break;
|
||
}
|
||
|
||
/* Debug: display message. */
|
||
if (darwin_debug_flag > 10)
|
||
darwin_dump_message (hdr, darwin_debug_flag > 11);
|
||
|
||
ptid2 = darwin_decode_message (hdr, &thread, &inf, &status2);
|
||
|
||
if (inf != NULL && thread != NULL
|
||
&& thread->event.ex_type == EXC_BREAKPOINT)
|
||
{
|
||
if (thread->single_step
|
||
|| cancel_breakpoint (ptid_build (inf->pid, 0, thread->gdb_port)))
|
||
{
|
||
gdb_assert (thread->msg_state == DARWIN_MESSAGE);
|
||
darwin_send_reply (inf, thread);
|
||
thread->msg_state = DARWIN_RUNNING;
|
||
}
|
||
else
|
||
inferior_debug
|
||
(3, _("darwin_wait: thread 0x%x hit a non-gdb breakpoint\n"),
|
||
thread->gdb_port);
|
||
}
|
||
else
|
||
inferior_debug (3, _("darwin_wait: unhandled pending message\n"));
|
||
}
|
||
return res;
|
||
}
|
||
|
||
ptid_t
|
||
darwin_nat_target::wait (ptid_t ptid, struct target_waitstatus *status,
|
||
int options)
|
||
{
|
||
return darwin_wait (ptid, status);
|
||
}
|
||
|
||
void
|
||
darwin_nat_target::interrupt ()
|
||
{
|
||
struct inferior *inf = current_inferior ();
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
/* FIXME: handle in no_ptrace mode. */
|
||
gdb_assert (!priv->no_ptrace);
|
||
::kill (inf->pid, SIGINT);
|
||
}
|
||
|
||
/* Deallocate threads port and vector. */
|
||
|
||
static void
|
||
darwin_deallocate_threads (struct inferior *inf)
|
||
{
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
for (darwin_thread_t *t : priv->threads)
|
||
{
|
||
kern_return_t kret = mach_port_deallocate (gdb_task, t->gdb_port);
|
||
MACH_CHECK_ERROR (kret);
|
||
}
|
||
|
||
priv->threads.clear ();
|
||
}
|
||
|
||
void
|
||
darwin_nat_target::mourn_inferior ()
|
||
{
|
||
struct inferior *inf = current_inferior ();
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
kern_return_t kret;
|
||
mach_port_t prev;
|
||
int i;
|
||
|
||
/* Deallocate threads. */
|
||
darwin_deallocate_threads (inf);
|
||
|
||
/* Remove notify_port from darwin_port_set. */
|
||
kret = mach_port_move_member (gdb_task,
|
||
priv->notify_port, MACH_PORT_NULL);
|
||
MACH_CHECK_ERROR (kret);
|
||
|
||
/* Remove task port dead_name notification. */
|
||
kret = mach_port_request_notification (gdb_task, priv->task,
|
||
MACH_NOTIFY_DEAD_NAME, 0,
|
||
MACH_PORT_NULL,
|
||
MACH_MSG_TYPE_MAKE_SEND_ONCE,
|
||
&prev);
|
||
/* This can fail if the task is dead. */
|
||
inferior_debug (4, "task=0x%x, prev=0x%x, notify_port=0x%x\n",
|
||
priv->task, prev, priv->notify_port);
|
||
|
||
if (kret == KERN_SUCCESS)
|
||
{
|
||
kret = mach_port_deallocate (gdb_task, prev);
|
||
MACH_CHECK_ERROR (kret);
|
||
}
|
||
|
||
/* Destroy notify_port. */
|
||
kret = mach_port_destroy (gdb_task, priv->notify_port);
|
||
MACH_CHECK_ERROR (kret);
|
||
|
||
/* Deallocate saved exception ports. */
|
||
darwin_deallocate_exception_ports (priv);
|
||
|
||
/* Deallocate task port. */
|
||
kret = mach_port_deallocate (gdb_task, priv->task);
|
||
MACH_CHECK_ERROR (kret);
|
||
|
||
inf->priv = NULL;
|
||
|
||
inf_child_target::mourn_inferior ();
|
||
}
|
||
|
||
static void
|
||
darwin_reply_to_all_pending_messages (struct inferior *inf)
|
||
{
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
for (darwin_thread_t *t : priv->threads)
|
||
{
|
||
if (t->msg_state == DARWIN_MESSAGE)
|
||
darwin_resume_thread (inf, t, 0, 0);
|
||
}
|
||
}
|
||
|
||
static void
|
||
darwin_stop_inferior (struct inferior *inf)
|
||
{
|
||
struct target_waitstatus wstatus;
|
||
ptid_t ptid;
|
||
kern_return_t kret;
|
||
int status;
|
||
int res;
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
gdb_assert (inf != NULL);
|
||
|
||
darwin_suspend_inferior (inf);
|
||
|
||
darwin_reply_to_all_pending_messages (inf);
|
||
|
||
if (priv->no_ptrace)
|
||
return;
|
||
|
||
res = kill (inf->pid, SIGSTOP);
|
||
if (res != 0)
|
||
warning (_("cannot kill: %s"), safe_strerror (errno));
|
||
|
||
/* Wait until the process is really stopped. */
|
||
while (1)
|
||
{
|
||
ptid = darwin_wait (inferior_ptid, &wstatus);
|
||
if (wstatus.kind == TARGET_WAITKIND_STOPPED
|
||
&& wstatus.value.sig == GDB_SIGNAL_STOP)
|
||
break;
|
||
}
|
||
}
|
||
|
||
static kern_return_t
|
||
darwin_save_exception_ports (darwin_inferior *inf)
|
||
{
|
||
kern_return_t kret;
|
||
|
||
inf->exception_info.count =
|
||
sizeof (inf->exception_info.ports) / sizeof (inf->exception_info.ports[0]);
|
||
|
||
kret = task_get_exception_ports
|
||
(inf->task, EXC_MASK_ALL, inf->exception_info.masks,
|
||
&inf->exception_info.count, inf->exception_info.ports,
|
||
inf->exception_info.behaviors, inf->exception_info.flavors);
|
||
return kret;
|
||
}
|
||
|
||
static kern_return_t
|
||
darwin_restore_exception_ports (darwin_inferior *inf)
|
||
{
|
||
int i;
|
||
kern_return_t kret;
|
||
|
||
for (i = 0; i < inf->exception_info.count; i++)
|
||
{
|
||
kret = task_set_exception_ports
|
||
(inf->task, inf->exception_info.masks[i], inf->exception_info.ports[i],
|
||
inf->exception_info.behaviors[i], inf->exception_info.flavors[i]);
|
||
if (kret != KERN_SUCCESS)
|
||
return kret;
|
||
}
|
||
|
||
return KERN_SUCCESS;
|
||
}
|
||
|
||
/* Deallocate saved exception ports. */
|
||
|
||
static void
|
||
darwin_deallocate_exception_ports (darwin_inferior *inf)
|
||
{
|
||
int i;
|
||
kern_return_t kret;
|
||
|
||
for (i = 0; i < inf->exception_info.count; i++)
|
||
{
|
||
kret = mach_port_deallocate (gdb_task, inf->exception_info.ports[i]);
|
||
MACH_CHECK_ERROR (kret);
|
||
}
|
||
inf->exception_info.count = 0;
|
||
}
|
||
|
||
static void
|
||
darwin_setup_exceptions (struct inferior *inf)
|
||
{
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
kern_return_t kret;
|
||
int traps_expected;
|
||
exception_mask_t mask;
|
||
|
||
kret = darwin_save_exception_ports (priv);
|
||
if (kret != KERN_SUCCESS)
|
||
error (_("Unable to save exception ports, task_get_exception_ports"
|
||
"returned: %d"),
|
||
kret);
|
||
|
||
/* Set exception port. */
|
||
if (enable_mach_exceptions)
|
||
mask = EXC_MASK_ALL;
|
||
else
|
||
mask = EXC_MASK_SOFTWARE | EXC_MASK_BREAKPOINT;
|
||
kret = task_set_exception_ports (priv->task, mask, darwin_ex_port,
|
||
EXCEPTION_DEFAULT, THREAD_STATE_NONE);
|
||
if (kret != KERN_SUCCESS)
|
||
error (_("Unable to set exception ports, task_set_exception_ports"
|
||
"returned: %d"),
|
||
kret);
|
||
}
|
||
|
||
void
|
||
darwin_nat_target::kill ()
|
||
{
|
||
struct inferior *inf = current_inferior ();
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
struct target_waitstatus wstatus;
|
||
ptid_t ptid;
|
||
kern_return_t kret;
|
||
int status;
|
||
int res;
|
||
|
||
if (ptid_equal (inferior_ptid, null_ptid))
|
||
return;
|
||
|
||
gdb_assert (inf != NULL);
|
||
|
||
kret = darwin_restore_exception_ports (priv);
|
||
MACH_CHECK_ERROR (kret);
|
||
|
||
darwin_reply_to_all_pending_messages (inf);
|
||
|
||
res = ::kill (inf->pid, 9);
|
||
|
||
if (res == 0)
|
||
{
|
||
darwin_resume_inferior (inf);
|
||
|
||
ptid = darwin_wait (inferior_ptid, &wstatus);
|
||
}
|
||
else if (errno != ESRCH)
|
||
warning (_("Failed to kill inferior: kill (%d, 9) returned [%s]"),
|
||
inf->pid, safe_strerror (errno));
|
||
|
||
target_mourn_inferior (inferior_ptid);
|
||
}
|
||
|
||
static void
|
||
darwin_setup_request_notification (struct inferior *inf)
|
||
{
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
kern_return_t kret;
|
||
mach_port_t prev_not;
|
||
|
||
kret = mach_port_request_notification (gdb_task, priv->task,
|
||
MACH_NOTIFY_DEAD_NAME, 0,
|
||
priv->notify_port,
|
||
MACH_MSG_TYPE_MAKE_SEND_ONCE,
|
||
&prev_not);
|
||
if (kret != KERN_SUCCESS)
|
||
error (_("Termination notification request failed, "
|
||
"mach_port_request_notification\n"
|
||
"returned: %d"),
|
||
kret);
|
||
if (prev_not != MACH_PORT_NULL)
|
||
{
|
||
/* This is unexpected, as there should not be any previously
|
||
registered notification request. But this is not a fatal
|
||
issue, so just emit a warning. */
|
||
warning (_("\
|
||
A task termination request was registered before the debugger registered\n\
|
||
its own. This is unexpected, but should otherwise not have any actual\n\
|
||
impact on the debugging session."));
|
||
}
|
||
}
|
||
|
||
static void
|
||
darwin_attach_pid (struct inferior *inf)
|
||
{
|
||
kern_return_t kret;
|
||
mach_port_t prev_port;
|
||
int traps_expected;
|
||
mach_port_t prev_not;
|
||
exception_mask_t mask;
|
||
|
||
darwin_inferior *priv = new darwin_inferior;
|
||
inf->priv.reset (priv);
|
||
|
||
kret = task_for_pid (gdb_task, inf->pid, &priv->task);
|
||
if (kret != KERN_SUCCESS)
|
||
{
|
||
int status;
|
||
|
||
if (!inf->attach_flag)
|
||
{
|
||
kill (inf->pid, 9);
|
||
waitpid (inf->pid, &status, 0);
|
||
}
|
||
|
||
error (_("Unable to find Mach task port for process-id %d: %s (0x%lx).\n"
|
||
" (please check gdb is codesigned - see taskgated(8))"),
|
||
inf->pid, mach_error_string (kret), (unsigned long) kret);
|
||
}
|
||
|
||
inferior_debug (2, _("inferior task: 0x%x, pid: %d\n"),
|
||
priv->task, inf->pid);
|
||
|
||
if (darwin_ex_port == MACH_PORT_NULL)
|
||
{
|
||
/* Create a port to get exceptions. */
|
||
kret = mach_port_allocate (gdb_task, MACH_PORT_RIGHT_RECEIVE,
|
||
&darwin_ex_port);
|
||
if (kret != KERN_SUCCESS)
|
||
error (_("Unable to create exception port, mach_port_allocate "
|
||
"returned: %d"),
|
||
kret);
|
||
|
||
kret = mach_port_insert_right (gdb_task, darwin_ex_port, darwin_ex_port,
|
||
MACH_MSG_TYPE_MAKE_SEND);
|
||
if (kret != KERN_SUCCESS)
|
||
error (_("Unable to create exception port, mach_port_insert_right "
|
||
"returned: %d"),
|
||
kret);
|
||
|
||
/* Create a port set and put ex_port in it. */
|
||
kret = mach_port_allocate (gdb_task, MACH_PORT_RIGHT_PORT_SET,
|
||
&darwin_port_set);
|
||
if (kret != KERN_SUCCESS)
|
||
error (_("Unable to create port set, mach_port_allocate "
|
||
"returned: %d"),
|
||
kret);
|
||
|
||
kret = mach_port_move_member (gdb_task, darwin_ex_port, darwin_port_set);
|
||
if (kret != KERN_SUCCESS)
|
||
error (_("Unable to move exception port into new port set, "
|
||
"mach_port_move_member\n"
|
||
"returned: %d"),
|
||
kret);
|
||
}
|
||
|
||
/* Create a port to be notified when the child task terminates. */
|
||
kret = mach_port_allocate (gdb_task, MACH_PORT_RIGHT_RECEIVE,
|
||
&priv->notify_port);
|
||
if (kret != KERN_SUCCESS)
|
||
error (_("Unable to create notification port, mach_port_allocate "
|
||
"returned: %d"),
|
||
kret);
|
||
|
||
kret = mach_port_move_member (gdb_task,
|
||
priv->notify_port, darwin_port_set);
|
||
if (kret != KERN_SUCCESS)
|
||
error (_("Unable to move notification port into new port set, "
|
||
"mach_port_move_member\n"
|
||
"returned: %d"),
|
||
kret);
|
||
|
||
darwin_setup_request_notification (inf);
|
||
|
||
darwin_setup_exceptions (inf);
|
||
|
||
if (!target_is_pushed (darwin_ops))
|
||
push_target (darwin_ops);
|
||
}
|
||
|
||
/* Get the thread_info object corresponding to this darwin_thread_info. */
|
||
|
||
static struct thread_info *
|
||
thread_info_from_private_thread_info (darwin_thread_info *pti)
|
||
{
|
||
struct thread_info *it;
|
||
|
||
ALL_THREADS (it)
|
||
{
|
||
darwin_thread_info *iter_pti = get_darwin_thread_info (it);
|
||
|
||
if (iter_pti->gdb_port == pti->gdb_port)
|
||
break;
|
||
}
|
||
|
||
gdb_assert (it != NULL);
|
||
|
||
return it;
|
||
}
|
||
|
||
static void
|
||
darwin_init_thread_list (struct inferior *inf)
|
||
{
|
||
darwin_check_new_threads (inf);
|
||
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
gdb_assert (!priv->threads.empty ());
|
||
|
||
darwin_thread_info *first_pti = priv->threads.front ();
|
||
struct thread_info *first_thread
|
||
= thread_info_from_private_thread_info (first_pti);
|
||
|
||
inferior_ptid = first_thread->ptid;
|
||
}
|
||
|
||
/* The child must synchronize with gdb: gdb must set the exception port
|
||
before the child call PTRACE_SIGEXC. We use a pipe to achieve this.
|
||
FIXME: is there a lighter way ? */
|
||
static int ptrace_fds[2];
|
||
|
||
static void
|
||
darwin_ptrace_me (void)
|
||
{
|
||
int res;
|
||
char c;
|
||
|
||
/* Close write end point. */
|
||
if (close (ptrace_fds[1]) < 0)
|
||
trace_start_error_with_name ("close");
|
||
|
||
/* Wait until gdb is ready. */
|
||
res = read (ptrace_fds[0], &c, 1);
|
||
if (res != 0)
|
||
trace_start_error (_("unable to read from pipe, read returned: %d"), res);
|
||
|
||
if (close (ptrace_fds[0]) < 0)
|
||
trace_start_error_with_name ("close");
|
||
|
||
/* Get rid of privileges. */
|
||
if (setegid (getgid ()) < 0)
|
||
trace_start_error_with_name ("setegid");
|
||
|
||
/* Set TRACEME. */
|
||
if (PTRACE (PT_TRACE_ME, 0, 0, 0) < 0)
|
||
trace_start_error_with_name ("PTRACE");
|
||
|
||
/* Redirect signals to exception port. */
|
||
if (PTRACE (PT_SIGEXC, 0, 0, 0) < 0)
|
||
trace_start_error_with_name ("PTRACE");
|
||
}
|
||
|
||
/* Dummy function to be sure fork_inferior uses fork(2) and not vfork(2). */
|
||
static void
|
||
darwin_pre_ptrace (void)
|
||
{
|
||
if (pipe (ptrace_fds) != 0)
|
||
{
|
||
ptrace_fds[0] = -1;
|
||
ptrace_fds[1] = -1;
|
||
error (_("unable to create a pipe: %s"), safe_strerror (errno));
|
||
}
|
||
|
||
mark_fd_no_cloexec (ptrace_fds[0]);
|
||
mark_fd_no_cloexec (ptrace_fds[1]);
|
||
}
|
||
|
||
static void
|
||
darwin_ptrace_him (int pid)
|
||
{
|
||
task_t itask;
|
||
kern_return_t kret;
|
||
mach_port_t prev_port;
|
||
int traps_expected;
|
||
struct inferior *inf = current_inferior ();
|
||
|
||
darwin_attach_pid (inf);
|
||
|
||
/* Let's the child run. */
|
||
close (ptrace_fds[0]);
|
||
close (ptrace_fds[1]);
|
||
|
||
unmark_fd_no_cloexec (ptrace_fds[0]);
|
||
unmark_fd_no_cloexec (ptrace_fds[1]);
|
||
|
||
darwin_init_thread_list (inf);
|
||
|
||
gdb_startup_inferior (pid, START_INFERIOR_TRAPS_EXPECTED);
|
||
}
|
||
|
||
static void
|
||
darwin_execvp (const char *file, char * const argv[], char * const env[])
|
||
{
|
||
posix_spawnattr_t attr;
|
||
short ps_flags = 0;
|
||
int res;
|
||
|
||
res = posix_spawnattr_init (&attr);
|
||
if (res != 0)
|
||
{
|
||
fprintf_unfiltered
|
||
(gdb_stderr, "Cannot initialize attribute for posix_spawn\n");
|
||
return;
|
||
}
|
||
|
||
/* Do like execve: replace the image. */
|
||
ps_flags = POSIX_SPAWN_SETEXEC;
|
||
|
||
/* Disable ASLR. The constant doesn't look to be available outside the
|
||
kernel include files. */
|
||
#ifndef _POSIX_SPAWN_DISABLE_ASLR
|
||
#define _POSIX_SPAWN_DISABLE_ASLR 0x0100
|
||
#endif
|
||
ps_flags |= _POSIX_SPAWN_DISABLE_ASLR;
|
||
res = posix_spawnattr_setflags (&attr, ps_flags);
|
||
if (res != 0)
|
||
{
|
||
fprintf_unfiltered (gdb_stderr, "Cannot set posix_spawn flags\n");
|
||
return;
|
||
}
|
||
|
||
posix_spawnp (NULL, argv[0], NULL, &attr, argv, env);
|
||
}
|
||
|
||
void
|
||
darwin_nat_target::create_inferior (const char *exec_file,
|
||
const std::string &allargs,
|
||
char **env, int from_tty)
|
||
{
|
||
/* Do the hard work. */
|
||
fork_inferior (exec_file, allargs, env, darwin_ptrace_me,
|
||
darwin_ptrace_him, darwin_pre_ptrace, NULL,
|
||
darwin_execvp);
|
||
}
|
||
|
||
|
||
/* Set things up such that the next call to darwin_wait will immediately
|
||
return a fake stop event for inferior INF.
|
||
|
||
This assumes that the inferior's thread list has been initialized,
|
||
as it will suspend the inferior's first thread. */
|
||
|
||
static void
|
||
darwin_setup_fake_stop_event (struct inferior *inf)
|
||
{
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
darwin_thread_t *thread;
|
||
kern_return_t kret;
|
||
|
||
gdb_assert (darwin_inf_fake_stop == NULL);
|
||
darwin_inf_fake_stop = inf;
|
||
|
||
/* When detecting a fake pending stop event, darwin_wait returns
|
||
an event saying that the first thread is in a DARWIN_STOPPED
|
||
state. To make that accurate, we need to suspend that thread
|
||
as well. Otherwise, we'll try resuming it when resuming the
|
||
inferior, and get a warning because the thread's suspend count
|
||
is already zero, making the resume request useless. */
|
||
thread = priv->threads[0];
|
||
kret = thread_suspend (thread->gdb_port);
|
||
MACH_CHECK_ERROR (kret);
|
||
}
|
||
|
||
/* Attach to process PID, then initialize for debugging it
|
||
and wait for the trace-trap that results from attaching. */
|
||
void
|
||
darwin_nat_target::attach (const char *args, int from_tty)
|
||
{
|
||
pid_t pid;
|
||
pid_t pid2;
|
||
int wstatus;
|
||
int res;
|
||
struct inferior *inf;
|
||
kern_return_t kret;
|
||
|
||
pid = parse_pid_to_attach (args);
|
||
|
||
if (pid == getpid ()) /* Trying to masturbate? */
|
||
error (_("I refuse to debug myself!"));
|
||
|
||
if (from_tty)
|
||
{
|
||
char *exec_file = get_exec_file (0);
|
||
|
||
if (exec_file)
|
||
printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file,
|
||
target_pid_to_str (pid_to_ptid (pid)));
|
||
else
|
||
printf_unfiltered (_("Attaching to %s\n"),
|
||
target_pid_to_str (pid_to_ptid (pid)));
|
||
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
|
||
if (pid == 0 || ::kill (pid, 0) < 0)
|
||
error (_("Can't attach to process %d: %s (%d)"),
|
||
pid, safe_strerror (errno), errno);
|
||
|
||
inferior_ptid = pid_to_ptid (pid);
|
||
inf = current_inferior ();
|
||
inferior_appeared (inf, pid);
|
||
inf->attach_flag = 1;
|
||
|
||
darwin_attach_pid (inf);
|
||
|
||
darwin_suspend_inferior (inf);
|
||
|
||
darwin_init_thread_list (inf);
|
||
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
darwin_check_osabi (priv, ptid_get_tid (inferior_ptid));
|
||
|
||
darwin_setup_fake_stop_event (inf);
|
||
|
||
priv->no_ptrace = 1;
|
||
}
|
||
|
||
/* Take a program previously attached to and detaches it.
|
||
The program resumes execution and will no longer stop
|
||
on signals, etc. We'd 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 fork. */
|
||
|
||
void
|
||
darwin_nat_target::detach (inferior *inf, int from_tty)
|
||
{
|
||
pid_t pid = ptid_get_pid (inferior_ptid);
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
kern_return_t kret;
|
||
int res;
|
||
|
||
/* Display message. */
|
||
target_announce_detach (from_tty);
|
||
|
||
/* If ptrace() is in use, stop the process. */
|
||
if (!priv->no_ptrace)
|
||
darwin_stop_inferior (inf);
|
||
|
||
kret = darwin_restore_exception_ports (priv);
|
||
MACH_CHECK_ERROR (kret);
|
||
|
||
if (!priv->no_ptrace)
|
||
{
|
||
res = PTRACE (PT_DETACH, inf->pid, 0, 0);
|
||
if (res != 0)
|
||
printf_unfiltered (_("Unable to detach from process-id %d: %s (%d)"),
|
||
inf->pid, safe_strerror (errno), errno);
|
||
}
|
||
|
||
darwin_reply_to_all_pending_messages (inf);
|
||
|
||
/* When using ptrace, we have just performed a PT_DETACH, which
|
||
resumes the inferior. On the other hand, when we are not using
|
||
ptrace, we need to resume its execution ourselves. */
|
||
if (priv->no_ptrace)
|
||
darwin_resume_inferior (inf);
|
||
|
||
mourn_inferior ();
|
||
}
|
||
|
||
const char *
|
||
darwin_nat_target::pid_to_str (ptid_t ptid)
|
||
{
|
||
static char buf[80];
|
||
long tid = ptid_get_tid (ptid);
|
||
|
||
if (tid != 0)
|
||
{
|
||
snprintf (buf, sizeof (buf), _("Thread 0x%lx of process %u"),
|
||
tid, ptid_get_pid (ptid));
|
||
return buf;
|
||
}
|
||
|
||
return normal_pid_to_str (ptid);
|
||
}
|
||
|
||
int
|
||
darwin_nat_target::thread_alive (ptid_t ptid)
|
||
{
|
||
return 1;
|
||
}
|
||
|
||
/* If RDADDR is not NULL, read inferior task's LEN bytes from ADDR and
|
||
copy it to RDADDR in gdb's address space.
|
||
If WRADDR is not NULL, write gdb's LEN bytes from WRADDR and copy it
|
||
to ADDR in inferior task's address space.
|
||
Return 0 on failure; number of bytes read / writen otherwise. */
|
||
|
||
static int
|
||
darwin_read_write_inferior (task_t task, CORE_ADDR addr,
|
||
gdb_byte *rdaddr, const gdb_byte *wraddr,
|
||
ULONGEST length)
|
||
{
|
||
kern_return_t kret;
|
||
mach_vm_size_t res_length = 0;
|
||
pointer_t copied;
|
||
mach_msg_type_number_t copy_count;
|
||
mach_vm_size_t remaining_length;
|
||
mach_vm_address_t region_address;
|
||
mach_vm_size_t region_length;
|
||
|
||
inferior_debug (8, _("darwin_read_write_inferior(task=0x%x, %s, len=%s)\n"),
|
||
task, core_addr_to_string (addr), pulongest (length));
|
||
|
||
/* First read. */
|
||
if (rdaddr != NULL)
|
||
{
|
||
mach_vm_size_t count;
|
||
|
||
/* According to target.h(to_xfer_partial), one and only one may be
|
||
non-null. */
|
||
gdb_assert (wraddr == NULL);
|
||
|
||
kret = mach_vm_read_overwrite (task, addr, length,
|
||
(mach_vm_address_t) rdaddr, &count);
|
||
if (kret != KERN_SUCCESS)
|
||
{
|
||
inferior_debug
|
||
(1, _("darwin_read_write_inferior: mach_vm_read failed at %s: %s"),
|
||
core_addr_to_string (addr), mach_error_string (kret));
|
||
return 0;
|
||
}
|
||
return count;
|
||
}
|
||
|
||
/* See above. */
|
||
gdb_assert (wraddr != NULL);
|
||
|
||
while (length != 0)
|
||
{
|
||
mach_vm_address_t offset = addr & (mach_page_size - 1);
|
||
mach_vm_address_t region_address = (mach_vm_address_t) (addr - offset);
|
||
mach_vm_size_t aligned_length =
|
||
(mach_vm_size_t) PAGE_ROUND (offset + length);
|
||
vm_region_submap_short_info_data_64_t info;
|
||
mach_msg_type_number_t count = VM_REGION_SUBMAP_SHORT_INFO_COUNT_64;
|
||
natural_t region_depth = 1000;
|
||
mach_vm_address_t region_start = region_address;
|
||
mach_vm_size_t region_length;
|
||
mach_vm_size_t write_length;
|
||
|
||
/* Read page protection. */
|
||
kret = mach_vm_region_recurse
|
||
(task, ®ion_start, ®ion_length, ®ion_depth,
|
||
(vm_region_recurse_info_t) &info, &count);
|
||
|
||
if (kret != KERN_SUCCESS)
|
||
{
|
||
inferior_debug (1, _("darwin_read_write_inferior: "
|
||
"mach_vm_region_recurse failed at %s: %s\n"),
|
||
core_addr_to_string (region_address),
|
||
mach_error_string (kret));
|
||
return res_length;
|
||
}
|
||
|
||
inferior_debug
|
||
(9, _("darwin_read_write_inferior: "
|
||
"mach_vm_region_recurse addr=%s, start=%s, len=%s\n"),
|
||
core_addr_to_string (region_address),
|
||
core_addr_to_string (region_start),
|
||
core_addr_to_string (region_length));
|
||
|
||
/* Check for holes in memory. */
|
||
if (region_start > region_address)
|
||
{
|
||
warning (_("No memory at %s (vs %s+0x%x). Nothing written"),
|
||
core_addr_to_string (region_address),
|
||
core_addr_to_string (region_start),
|
||
(unsigned)region_length);
|
||
return res_length;
|
||
}
|
||
|
||
/* Adjust the length. */
|
||
region_length -= (region_address - region_start);
|
||
if (region_length > aligned_length)
|
||
region_length = aligned_length;
|
||
|
||
/* Make the pages RW. */
|
||
if (!(info.protection & VM_PROT_WRITE))
|
||
{
|
||
vm_prot_t prot = VM_PROT_READ | VM_PROT_WRITE;
|
||
|
||
kret = mach_vm_protect (task, region_address, region_length,
|
||
FALSE, prot);
|
||
if (kret != KERN_SUCCESS)
|
||
{
|
||
prot |= VM_PROT_COPY;
|
||
kret = mach_vm_protect (task, region_address, region_length,
|
||
FALSE, prot);
|
||
}
|
||
if (kret != KERN_SUCCESS)
|
||
{
|
||
warning (_("darwin_read_write_inferior: "
|
||
"mach_vm_protect failed at %s "
|
||
"(len=0x%lx, prot=0x%x): %s"),
|
||
core_addr_to_string (region_address),
|
||
(unsigned long) region_length, (unsigned) prot,
|
||
mach_error_string (kret));
|
||
return res_length;
|
||
}
|
||
}
|
||
|
||
if (offset + length > region_length)
|
||
write_length = region_length - offset;
|
||
else
|
||
write_length = length;
|
||
|
||
/* Write. */
|
||
kret = mach_vm_write (task, addr, (vm_offset_t) wraddr, write_length);
|
||
if (kret != KERN_SUCCESS)
|
||
{
|
||
warning (_("darwin_read_write_inferior: mach_vm_write failed: %s"),
|
||
mach_error_string (kret));
|
||
return res_length;
|
||
}
|
||
|
||
/* Restore page rights. */
|
||
if (!(info.protection & VM_PROT_WRITE))
|
||
{
|
||
kret = mach_vm_protect (task, region_address, region_length,
|
||
FALSE, info.protection);
|
||
if (kret != KERN_SUCCESS)
|
||
{
|
||
warning (_("darwin_read_write_inferior: "
|
||
"mach_vm_protect restore failed at %s "
|
||
"(len=0x%lx): %s"),
|
||
core_addr_to_string (region_address),
|
||
(unsigned long) region_length,
|
||
mach_error_string (kret));
|
||
}
|
||
}
|
||
|
||
addr += write_length;
|
||
wraddr += write_length;
|
||
res_length += write_length;
|
||
length -= write_length;
|
||
}
|
||
|
||
return res_length;
|
||
}
|
||
|
||
/* Read LENGTH bytes at offset ADDR of task_dyld_info for TASK, and copy them
|
||
to RDADDR (in big endian).
|
||
Return 0 on failure; number of bytes read / written otherwise. */
|
||
|
||
#ifdef TASK_DYLD_INFO_COUNT
|
||
/* This is not available in Darwin 9. */
|
||
static enum target_xfer_status
|
||
darwin_read_dyld_info (task_t task, CORE_ADDR addr, gdb_byte *rdaddr,
|
||
ULONGEST length, ULONGEST *xfered_len)
|
||
{
|
||
struct task_dyld_info task_dyld_info;
|
||
mach_msg_type_number_t count = TASK_DYLD_INFO_COUNT;
|
||
int sz = TASK_DYLD_INFO_COUNT * sizeof (natural_t);
|
||
kern_return_t kret;
|
||
|
||
if (addr != 0 || length > sizeof (mach_vm_address_t))
|
||
return TARGET_XFER_EOF;
|
||
|
||
kret = task_info (task, TASK_DYLD_INFO,
|
||
(task_info_t) &task_dyld_info, &count);
|
||
MACH_CHECK_ERROR (kret);
|
||
if (kret != KERN_SUCCESS)
|
||
return TARGET_XFER_E_IO;
|
||
|
||
store_unsigned_integer (rdaddr, length, BFD_ENDIAN_BIG,
|
||
task_dyld_info.all_image_info_addr);
|
||
*xfered_len = (ULONGEST) length;
|
||
return TARGET_XFER_OK;
|
||
}
|
||
#endif
|
||
|
||
|
||
|
||
enum target_xfer_status
|
||
darwin_nat_target::xfer_partial (enum target_object object, const char *annex,
|
||
gdb_byte *readbuf, const gdb_byte *writebuf,
|
||
ULONGEST offset, ULONGEST len,
|
||
ULONGEST *xfered_len)
|
||
{
|
||
struct inferior *inf = current_inferior ();
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
|
||
inferior_debug
|
||
(8, _("darwin_xfer_partial(%s, %s, rbuf=%s, wbuf=%s) pid=%u\n"),
|
||
core_addr_to_string (offset), pulongest (len),
|
||
host_address_to_string (readbuf), host_address_to_string (writebuf),
|
||
inf->pid);
|
||
|
||
switch (object)
|
||
{
|
||
case TARGET_OBJECT_MEMORY:
|
||
{
|
||
int l = darwin_read_write_inferior (priv->task, offset,
|
||
readbuf, writebuf, len);
|
||
|
||
if (l == 0)
|
||
return TARGET_XFER_EOF;
|
||
else
|
||
{
|
||
gdb_assert (l > 0);
|
||
*xfered_len = (ULONGEST) l;
|
||
return TARGET_XFER_OK;
|
||
}
|
||
}
|
||
#ifdef TASK_DYLD_INFO_COUNT
|
||
case TARGET_OBJECT_DARWIN_DYLD_INFO:
|
||
if (writebuf != NULL || readbuf == NULL)
|
||
{
|
||
/* Support only read. */
|
||
return TARGET_XFER_E_IO;
|
||
}
|
||
return darwin_read_dyld_info (priv->task, offset, readbuf, len,
|
||
xfered_len);
|
||
#endif
|
||
default:
|
||
return TARGET_XFER_E_IO;
|
||
}
|
||
|
||
}
|
||
|
||
static void
|
||
set_enable_mach_exceptions (const char *args, int from_tty,
|
||
struct cmd_list_element *c)
|
||
{
|
||
if (!ptid_equal (inferior_ptid, null_ptid))
|
||
{
|
||
struct inferior *inf = current_inferior ();
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
exception_mask_t mask;
|
||
kern_return_t kret;
|
||
|
||
if (enable_mach_exceptions)
|
||
mask = EXC_MASK_ALL;
|
||
else
|
||
{
|
||
darwin_restore_exception_ports (priv);
|
||
mask = EXC_MASK_SOFTWARE | EXC_MASK_BREAKPOINT;
|
||
}
|
||
kret = task_set_exception_ports (priv->task, mask, darwin_ex_port,
|
||
EXCEPTION_DEFAULT, THREAD_STATE_NONE);
|
||
MACH_CHECK_ERROR (kret);
|
||
}
|
||
}
|
||
|
||
char *
|
||
darwin_nat_target::pid_to_exec_file (int pid)
|
||
{
|
||
static char path[PATH_MAX];
|
||
int res;
|
||
|
||
res = proc_pidinfo (pid, PROC_PIDPATHINFO, 0, path, PATH_MAX);
|
||
if (res >= 0)
|
||
return path;
|
||
else
|
||
return NULL;
|
||
}
|
||
|
||
ptid_t
|
||
darwin_nat_target::get_ada_task_ptid (long lwp, long thread)
|
||
{
|
||
struct inferior *inf = current_inferior ();
|
||
darwin_inferior *priv = get_darwin_inferior (inf);
|
||
kern_return_t kret;
|
||
mach_port_name_array_t names;
|
||
mach_msg_type_number_t names_count;
|
||
mach_port_type_array_t types;
|
||
mach_msg_type_number_t types_count;
|
||
long res = 0;
|
||
|
||
/* First linear search. */
|
||
for (darwin_thread_t *t : priv->threads)
|
||
{
|
||
if (t->inf_port == lwp)
|
||
return ptid_build (ptid_get_pid (inferior_ptid), 0, t->gdb_port);
|
||
}
|
||
|
||
/* Maybe the port was never extract. Do it now. */
|
||
|
||
/* First get inferior port names. */
|
||
kret = mach_port_names (priv->task, &names, &names_count, &types,
|
||
&types_count);
|
||
MACH_CHECK_ERROR (kret);
|
||
if (kret != KERN_SUCCESS)
|
||
return null_ptid;
|
||
|
||
/* For each name, copy the right in the gdb space and then compare with
|
||
our view of the inferior threads. We don't forget to deallocate the
|
||
right. */
|
||
for (int i = 0; i < names_count; i++)
|
||
{
|
||
mach_port_t local_name;
|
||
mach_msg_type_name_t local_type;
|
||
|
||
/* We just need to know the corresponding name in gdb name space.
|
||
So extract and deallocate the right. */
|
||
kret = mach_port_extract_right (priv->task, names[i],
|
||
MACH_MSG_TYPE_COPY_SEND,
|
||
&local_name, &local_type);
|
||
if (kret != KERN_SUCCESS)
|
||
continue;
|
||
mach_port_deallocate (gdb_task, local_name);
|
||
|
||
for (darwin_thread_t *t : priv->threads)
|
||
{
|
||
if (t->gdb_port == local_name)
|
||
{
|
||
t->inf_port = names[i];
|
||
if (names[i] == lwp)
|
||
res = t->gdb_port;
|
||
}
|
||
}
|
||
}
|
||
|
||
vm_deallocate (gdb_task, (vm_address_t) names,
|
||
names_count * sizeof (mach_port_t));
|
||
|
||
if (res)
|
||
return ptid_build (ptid_get_pid (inferior_ptid), 0, res);
|
||
else
|
||
return null_ptid;
|
||
}
|
||
|
||
int
|
||
darwin_nat_target::supports_multi_process ()
|
||
{
|
||
return 1;
|
||
}
|
||
|
||
void
|
||
_initialize_darwin_nat ()
|
||
{
|
||
kern_return_t kret;
|
||
|
||
gdb_task = mach_task_self ();
|
||
darwin_host_self = mach_host_self ();
|
||
|
||
/* Read page size. */
|
||
kret = host_page_size (darwin_host_self, &mach_page_size);
|
||
if (kret != KERN_SUCCESS)
|
||
{
|
||
mach_page_size = 0x1000;
|
||
MACH_CHECK_ERROR (kret);
|
||
}
|
||
|
||
inferior_debug (2, _("GDB task: 0x%lx, pid: %d\n"),
|
||
(unsigned long) mach_task_self (), getpid ());
|
||
|
||
add_setshow_zuinteger_cmd ("darwin", class_obscure,
|
||
&darwin_debug_flag, _("\
|
||
Set if printing inferior communication debugging statements."), _("\
|
||
Show if printing inferior communication debugging statements."), NULL,
|
||
NULL, NULL,
|
||
&setdebuglist, &showdebuglist);
|
||
|
||
add_setshow_boolean_cmd ("mach-exceptions", class_support,
|
||
&enable_mach_exceptions, _("\
|
||
Set if mach exceptions are caught."), _("\
|
||
Show if mach exceptions are caught."), _("\
|
||
When this mode is on, all low level exceptions are reported before being\n\
|
||
reported by the kernel."),
|
||
&set_enable_mach_exceptions, NULL,
|
||
&setlist, &showlist);
|
||
}
|