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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.
1036 lines
27 KiB
C
1036 lines
27 KiB
C
/* Core dump and executable file functions below target vector, for GDB.
|
||
|
||
Copyright (C) 1986-2018 Free Software Foundation, Inc.
|
||
|
||
This file is part of GDB.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
||
|
||
#include "defs.h"
|
||
#include "arch-utils.h"
|
||
#include <signal.h>
|
||
#include <fcntl.h>
|
||
#ifdef HAVE_SYS_FILE_H
|
||
#include <sys/file.h> /* needed for F_OK and friends */
|
||
#endif
|
||
#include "frame.h" /* required by inferior.h */
|
||
#include "inferior.h"
|
||
#include "infrun.h"
|
||
#include "symtab.h"
|
||
#include "command.h"
|
||
#include "bfd.h"
|
||
#include "target.h"
|
||
#include "gdbcore.h"
|
||
#include "gdbthread.h"
|
||
#include "regcache.h"
|
||
#include "regset.h"
|
||
#include "symfile.h"
|
||
#include "exec.h"
|
||
#include "readline/readline.h"
|
||
#include "solib.h"
|
||
#include "filenames.h"
|
||
#include "progspace.h"
|
||
#include "objfiles.h"
|
||
#include "gdb_bfd.h"
|
||
#include "completer.h"
|
||
#include "filestuff.h"
|
||
|
||
#ifndef O_LARGEFILE
|
||
#define O_LARGEFILE 0
|
||
#endif
|
||
|
||
/* The core file target. */
|
||
|
||
class core_target final : public target_ops
|
||
{
|
||
public:
|
||
core_target ()
|
||
{ to_stratum = process_stratum; }
|
||
|
||
const char *shortname () override
|
||
{ return "core"; }
|
||
|
||
const char *longname () override
|
||
{ return _("Local core dump file"); }
|
||
|
||
const char *doc () override
|
||
{
|
||
return _("\
|
||
Use a core file as a target. Specify the filename of the core file.");
|
||
}
|
||
|
||
void open (const char *, int) override;
|
||
void close () override;
|
||
void detach (inferior *, int) override;
|
||
void fetch_registers (struct regcache *, int) override;
|
||
|
||
enum target_xfer_status xfer_partial (enum target_object object,
|
||
const char *annex,
|
||
gdb_byte *readbuf,
|
||
const gdb_byte *writebuf,
|
||
ULONGEST offset, ULONGEST len,
|
||
ULONGEST *xfered_len) override;
|
||
void files_info () override;
|
||
|
||
int thread_alive (ptid_t ptid) override;
|
||
const struct target_desc *read_description () override;
|
||
|
||
const char *pid_to_str (ptid_t) override;
|
||
|
||
const char *thread_name (struct thread_info *) override;
|
||
|
||
int has_memory () override;
|
||
int has_stack () override;
|
||
int has_registers () override;
|
||
bool info_proc (const char *, enum info_proc_what) override;
|
||
};
|
||
|
||
/* See gdbcore.h. */
|
||
struct target_ops *the_core_target;
|
||
|
||
/* List of all available core_fns. On gdb startup, each core file
|
||
register reader calls deprecated_add_core_fns() to register
|
||
information on each core format it is prepared to read. */
|
||
|
||
static struct core_fns *core_file_fns = NULL;
|
||
|
||
/* The core_fns for a core file handler that is prepared to read the
|
||
core file currently open on core_bfd. */
|
||
|
||
static struct core_fns *core_vec = NULL;
|
||
|
||
/* FIXME: kettenis/20031023: Eventually this variable should
|
||
disappear. */
|
||
|
||
static struct gdbarch *core_gdbarch = NULL;
|
||
|
||
/* Per-core data. Currently, only the section table. Note that these
|
||
target sections are *not* mapped in the current address spaces' set
|
||
of target sections --- those should come only from pure executable
|
||
or shared library bfds. The core bfd sections are an
|
||
implementation detail of the core target, just like ptrace is for
|
||
unix child targets. */
|
||
static struct target_section_table *core_data;
|
||
|
||
static struct core_fns *sniff_core_bfd (bfd *);
|
||
|
||
static int gdb_check_format (bfd *);
|
||
|
||
static void core_close_cleanup (void *ignore);
|
||
|
||
static void add_to_thread_list (bfd *, asection *, void *);
|
||
|
||
static core_target core_ops;
|
||
|
||
/* An arbitrary identifier for the core inferior. */
|
||
#define CORELOW_PID 1
|
||
|
||
/* Link a new core_fns into the global core_file_fns list. Called on
|
||
gdb startup by the _initialize routine in each core file register
|
||
reader, to register information about each format the reader is
|
||
prepared to handle. */
|
||
|
||
void
|
||
deprecated_add_core_fns (struct core_fns *cf)
|
||
{
|
||
cf->next = core_file_fns;
|
||
core_file_fns = cf;
|
||
}
|
||
|
||
/* The default function that core file handlers can use to examine a
|
||
core file BFD and decide whether or not to accept the job of
|
||
reading the core file. */
|
||
|
||
int
|
||
default_core_sniffer (struct core_fns *our_fns, bfd *abfd)
|
||
{
|
||
int result;
|
||
|
||
result = (bfd_get_flavour (abfd) == our_fns -> core_flavour);
|
||
return (result);
|
||
}
|
||
|
||
/* Walk through the list of core functions to find a set that can
|
||
handle the core file open on ABFD. Returns pointer to set that is
|
||
selected. */
|
||
|
||
static struct core_fns *
|
||
sniff_core_bfd (bfd *abfd)
|
||
{
|
||
struct core_fns *cf;
|
||
struct core_fns *yummy = NULL;
|
||
int matches = 0;
|
||
|
||
/* Don't sniff if we have support for register sets in
|
||
CORE_GDBARCH. */
|
||
if (core_gdbarch && gdbarch_iterate_over_regset_sections_p (core_gdbarch))
|
||
return NULL;
|
||
|
||
for (cf = core_file_fns; cf != NULL; cf = cf->next)
|
||
{
|
||
if (cf->core_sniffer (cf, abfd))
|
||
{
|
||
yummy = cf;
|
||
matches++;
|
||
}
|
||
}
|
||
if (matches > 1)
|
||
{
|
||
warning (_("\"%s\": ambiguous core format, %d handlers match"),
|
||
bfd_get_filename (abfd), matches);
|
||
}
|
||
else if (matches == 0)
|
||
error (_("\"%s\": no core file handler recognizes format"),
|
||
bfd_get_filename (abfd));
|
||
|
||
return (yummy);
|
||
}
|
||
|
||
/* The default is to reject every core file format we see. Either
|
||
BFD has to recognize it, or we have to provide a function in the
|
||
core file handler that recognizes it. */
|
||
|
||
int
|
||
default_check_format (bfd *abfd)
|
||
{
|
||
return (0);
|
||
}
|
||
|
||
/* Attempt to recognize core file formats that BFD rejects. */
|
||
|
||
static int
|
||
gdb_check_format (bfd *abfd)
|
||
{
|
||
struct core_fns *cf;
|
||
|
||
for (cf = core_file_fns; cf != NULL; cf = cf->next)
|
||
{
|
||
if (cf->check_format (abfd))
|
||
{
|
||
return (1);
|
||
}
|
||
}
|
||
return (0);
|
||
}
|
||
|
||
/* Discard all vestiges of any previous core file and mark data and
|
||
stack spaces as empty. */
|
||
|
||
static void
|
||
core_close ()
|
||
{
|
||
if (core_bfd)
|
||
{
|
||
int pid = ptid_get_pid (inferior_ptid);
|
||
inferior_ptid = null_ptid; /* Avoid confusion from thread
|
||
stuff. */
|
||
if (pid != 0)
|
||
exit_inferior_silent (pid);
|
||
|
||
/* Clear out solib state while the bfd is still open. See
|
||
comments in clear_solib in solib.c. */
|
||
clear_solib ();
|
||
|
||
if (core_data)
|
||
{
|
||
xfree (core_data->sections);
|
||
xfree (core_data);
|
||
core_data = NULL;
|
||
}
|
||
|
||
gdb_bfd_unref (core_bfd);
|
||
core_bfd = NULL;
|
||
}
|
||
core_vec = NULL;
|
||
core_gdbarch = NULL;
|
||
}
|
||
|
||
static void
|
||
core_close_cleanup (void *ignore)
|
||
{
|
||
core_close ();
|
||
}
|
||
|
||
void
|
||
core_target::close ()
|
||
{
|
||
core_close ();
|
||
}
|
||
|
||
/* Look for sections whose names start with `.reg/' so that we can
|
||
extract the list of threads in a core file. */
|
||
|
||
static void
|
||
add_to_thread_list (bfd *abfd, asection *asect, void *reg_sect_arg)
|
||
{
|
||
ptid_t ptid;
|
||
int core_tid;
|
||
int pid, lwpid;
|
||
asection *reg_sect = (asection *) reg_sect_arg;
|
||
int fake_pid_p = 0;
|
||
struct inferior *inf;
|
||
|
||
if (!startswith (bfd_section_name (abfd, asect), ".reg/"))
|
||
return;
|
||
|
||
core_tid = atoi (bfd_section_name (abfd, asect) + 5);
|
||
|
||
pid = bfd_core_file_pid (core_bfd);
|
||
if (pid == 0)
|
||
{
|
||
fake_pid_p = 1;
|
||
pid = CORELOW_PID;
|
||
}
|
||
|
||
lwpid = core_tid;
|
||
|
||
inf = current_inferior ();
|
||
if (inf->pid == 0)
|
||
{
|
||
inferior_appeared (inf, pid);
|
||
inf->fake_pid_p = fake_pid_p;
|
||
}
|
||
|
||
ptid = ptid_build (pid, lwpid, 0);
|
||
|
||
add_thread (ptid);
|
||
|
||
/* Warning, Will Robinson, looking at BFD private data! */
|
||
|
||
if (reg_sect != NULL
|
||
&& asect->filepos == reg_sect->filepos) /* Did we find .reg? */
|
||
inferior_ptid = ptid; /* Yes, make it current. */
|
||
}
|
||
|
||
/* This routine opens and sets up the core file bfd. */
|
||
|
||
void
|
||
core_target::open (const char *arg, int from_tty)
|
||
{
|
||
const char *p;
|
||
int siggy;
|
||
struct cleanup *old_chain;
|
||
int scratch_chan;
|
||
int flags;
|
||
|
||
target_preopen (from_tty);
|
||
if (!arg)
|
||
{
|
||
if (core_bfd)
|
||
error (_("No core file specified. (Use `detach' "
|
||
"to stop debugging a core file.)"));
|
||
else
|
||
error (_("No core file specified."));
|
||
}
|
||
|
||
gdb::unique_xmalloc_ptr<char> filename (tilde_expand (arg));
|
||
if (!IS_ABSOLUTE_PATH (filename.get ()))
|
||
filename.reset (concat (current_directory, "/",
|
||
filename.get (), (char *) NULL));
|
||
|
||
flags = O_BINARY | O_LARGEFILE;
|
||
if (write_files)
|
||
flags |= O_RDWR;
|
||
else
|
||
flags |= O_RDONLY;
|
||
scratch_chan = gdb_open_cloexec (filename.get (), flags, 0);
|
||
if (scratch_chan < 0)
|
||
perror_with_name (filename.get ());
|
||
|
||
gdb_bfd_ref_ptr temp_bfd (gdb_bfd_fopen (filename.get (), gnutarget,
|
||
write_files ? FOPEN_RUB : FOPEN_RB,
|
||
scratch_chan));
|
||
if (temp_bfd == NULL)
|
||
perror_with_name (filename.get ());
|
||
|
||
if (!bfd_check_format (temp_bfd.get (), bfd_core)
|
||
&& !gdb_check_format (temp_bfd.get ()))
|
||
{
|
||
/* Do it after the err msg */
|
||
/* FIXME: should be checking for errors from bfd_close (for one
|
||
thing, on error it does not free all the storage associated
|
||
with the bfd). */
|
||
error (_("\"%s\" is not a core dump: %s"),
|
||
filename.get (), bfd_errmsg (bfd_get_error ()));
|
||
}
|
||
|
||
/* Looks semi-reasonable. Toss the old core file and work on the
|
||
new. */
|
||
|
||
unpush_target (&core_ops);
|
||
core_bfd = temp_bfd.release ();
|
||
old_chain = make_cleanup (core_close_cleanup, 0 /*ignore*/);
|
||
|
||
core_gdbarch = gdbarch_from_bfd (core_bfd);
|
||
|
||
/* Find a suitable core file handler to munch on core_bfd */
|
||
core_vec = sniff_core_bfd (core_bfd);
|
||
|
||
validate_files ();
|
||
|
||
core_data = XCNEW (struct target_section_table);
|
||
|
||
/* Find the data section */
|
||
if (build_section_table (core_bfd,
|
||
&core_data->sections,
|
||
&core_data->sections_end))
|
||
error (_("\"%s\": Can't find sections: %s"),
|
||
bfd_get_filename (core_bfd), bfd_errmsg (bfd_get_error ()));
|
||
|
||
/* If we have no exec file, try to set the architecture from the
|
||
core file. We don't do this unconditionally since an exec file
|
||
typically contains more information that helps us determine the
|
||
architecture than a core file. */
|
||
if (!exec_bfd)
|
||
set_gdbarch_from_file (core_bfd);
|
||
|
||
push_target (&core_ops);
|
||
discard_cleanups (old_chain);
|
||
|
||
/* Do this before acknowledging the inferior, so if
|
||
post_create_inferior throws (can happen easilly if you're loading
|
||
a core file with the wrong exec), we aren't left with threads
|
||
from the previous inferior. */
|
||
init_thread_list ();
|
||
|
||
inferior_ptid = null_ptid;
|
||
|
||
/* Need to flush the register cache (and the frame cache) from a
|
||
previous debug session. If inferior_ptid ends up the same as the
|
||
last debug session --- e.g., b foo; run; gcore core1; step; gcore
|
||
core2; core core1; core core2 --- then there's potential for
|
||
get_current_regcache to return the cached regcache of the
|
||
previous session, and the frame cache being stale. */
|
||
registers_changed ();
|
||
|
||
/* Build up thread list from BFD sections, and possibly set the
|
||
current thread to the .reg/NN section matching the .reg
|
||
section. */
|
||
bfd_map_over_sections (core_bfd, add_to_thread_list,
|
||
bfd_get_section_by_name (core_bfd, ".reg"));
|
||
|
||
if (ptid_equal (inferior_ptid, null_ptid))
|
||
{
|
||
/* Either we found no .reg/NN section, and hence we have a
|
||
non-threaded core (single-threaded, from gdb's perspective),
|
||
or for some reason add_to_thread_list couldn't determine
|
||
which was the "main" thread. The latter case shouldn't
|
||
usually happen, but we're dealing with input here, which can
|
||
always be broken in different ways. */
|
||
struct thread_info *thread = first_thread_of_process (-1);
|
||
|
||
if (thread == NULL)
|
||
{
|
||
inferior_appeared (current_inferior (), CORELOW_PID);
|
||
inferior_ptid = pid_to_ptid (CORELOW_PID);
|
||
add_thread_silent (inferior_ptid);
|
||
}
|
||
else
|
||
switch_to_thread (thread->ptid);
|
||
}
|
||
|
||
post_create_inferior (&core_ops, from_tty);
|
||
|
||
/* Now go through the target stack looking for threads since there
|
||
may be a thread_stratum target loaded on top of target core by
|
||
now. The layer above should claim threads found in the BFD
|
||
sections. */
|
||
TRY
|
||
{
|
||
target_update_thread_list ();
|
||
}
|
||
|
||
CATCH (except, RETURN_MASK_ERROR)
|
||
{
|
||
exception_print (gdb_stderr, except);
|
||
}
|
||
END_CATCH
|
||
|
||
p = bfd_core_file_failing_command (core_bfd);
|
||
if (p)
|
||
printf_filtered (_("Core was generated by `%s'.\n"), p);
|
||
|
||
/* Clearing any previous state of convenience variables. */
|
||
clear_exit_convenience_vars ();
|
||
|
||
siggy = bfd_core_file_failing_signal (core_bfd);
|
||
if (siggy > 0)
|
||
{
|
||
/* If we don't have a CORE_GDBARCH to work with, assume a native
|
||
core (map gdb_signal from host signals). If we do have
|
||
CORE_GDBARCH to work with, but no gdb_signal_from_target
|
||
implementation for that gdbarch, as a fallback measure,
|
||
assume the host signal mapping. It'll be correct for native
|
||
cores, but most likely incorrect for cross-cores. */
|
||
enum gdb_signal sig = (core_gdbarch != NULL
|
||
&& gdbarch_gdb_signal_from_target_p (core_gdbarch)
|
||
? gdbarch_gdb_signal_from_target (core_gdbarch,
|
||
siggy)
|
||
: gdb_signal_from_host (siggy));
|
||
|
||
printf_filtered (_("Program terminated with signal %s, %s.\n"),
|
||
gdb_signal_to_name (sig), gdb_signal_to_string (sig));
|
||
|
||
/* Set the value of the internal variable $_exitsignal,
|
||
which holds the signal uncaught by the inferior. */
|
||
set_internalvar_integer (lookup_internalvar ("_exitsignal"),
|
||
siggy);
|
||
}
|
||
|
||
/* Fetch all registers from core file. */
|
||
target_fetch_registers (get_current_regcache (), -1);
|
||
|
||
/* Now, set up the frame cache, and print the top of stack. */
|
||
reinit_frame_cache ();
|
||
print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1);
|
||
|
||
/* Current thread should be NUM 1 but the user does not know that.
|
||
If a program is single threaded gdb in general does not mention
|
||
anything about threads. That is why the test is >= 2. */
|
||
if (thread_count () >= 2)
|
||
{
|
||
TRY
|
||
{
|
||
thread_command (NULL, from_tty);
|
||
}
|
||
CATCH (except, RETURN_MASK_ERROR)
|
||
{
|
||
exception_print (gdb_stderr, except);
|
||
}
|
||
END_CATCH
|
||
}
|
||
}
|
||
|
||
void
|
||
core_target::detach (inferior *inf, int from_tty)
|
||
{
|
||
unpush_target (this);
|
||
reinit_frame_cache ();
|
||
if (from_tty)
|
||
printf_filtered (_("No core file now.\n"));
|
||
}
|
||
|
||
/* Try to retrieve registers from a section in core_bfd, and supply
|
||
them to core_vec->core_read_registers, as the register set numbered
|
||
WHICH.
|
||
|
||
If ptid's lwp member is zero, do the single-threaded
|
||
thing: look for a section named NAME. If ptid's lwp
|
||
member is non-zero, do the multi-threaded thing: look for a section
|
||
named "NAME/LWP", where LWP is the shortest ASCII decimal
|
||
representation of ptid's lwp member.
|
||
|
||
HUMAN_NAME is a human-readable name for the kind of registers the
|
||
NAME section contains, for use in error messages.
|
||
|
||
If REQUIRED is non-zero, print an error if the core file doesn't
|
||
have a section by the appropriate name. Otherwise, just do
|
||
nothing. */
|
||
|
||
static void
|
||
get_core_register_section (struct regcache *regcache,
|
||
const struct regset *regset,
|
||
const char *name,
|
||
int min_size,
|
||
int which,
|
||
const char *human_name,
|
||
int required)
|
||
{
|
||
struct bfd_section *section;
|
||
bfd_size_type size;
|
||
char *contents;
|
||
bool variable_size_section = (regset != NULL
|
||
&& regset->flags & REGSET_VARIABLE_SIZE);
|
||
|
||
thread_section_name section_name (name, regcache->ptid ());
|
||
|
||
section = bfd_get_section_by_name (core_bfd, section_name.c_str ());
|
||
if (! section)
|
||
{
|
||
if (required)
|
||
warning (_("Couldn't find %s registers in core file."),
|
||
human_name);
|
||
return;
|
||
}
|
||
|
||
size = bfd_section_size (core_bfd, section);
|
||
if (size < min_size)
|
||
{
|
||
warning (_("Section `%s' in core file too small."),
|
||
section_name.c_str ());
|
||
return;
|
||
}
|
||
if (size != min_size && !variable_size_section)
|
||
{
|
||
warning (_("Unexpected size of section `%s' in core file."),
|
||
section_name.c_str ());
|
||
}
|
||
|
||
contents = (char *) alloca (size);
|
||
if (! bfd_get_section_contents (core_bfd, section, contents,
|
||
(file_ptr) 0, size))
|
||
{
|
||
warning (_("Couldn't read %s registers from `%s' section in core file."),
|
||
human_name, section_name.c_str ());
|
||
return;
|
||
}
|
||
|
||
if (regset != NULL)
|
||
{
|
||
regset->supply_regset (regset, regcache, -1, contents, size);
|
||
return;
|
||
}
|
||
|
||
gdb_assert (core_vec);
|
||
core_vec->core_read_registers (regcache, contents, size, which,
|
||
((CORE_ADDR)
|
||
bfd_section_vma (core_bfd, section)));
|
||
}
|
||
|
||
/* Callback for get_core_registers that handles a single core file
|
||
register note section. */
|
||
|
||
static void
|
||
get_core_registers_cb (const char *sect_name, int size,
|
||
const struct regset *regset,
|
||
const char *human_name, void *cb_data)
|
||
{
|
||
struct regcache *regcache = (struct regcache *) cb_data;
|
||
int required = 0;
|
||
|
||
if (strcmp (sect_name, ".reg") == 0)
|
||
{
|
||
required = 1;
|
||
if (human_name == NULL)
|
||
human_name = "general-purpose";
|
||
}
|
||
else if (strcmp (sect_name, ".reg2") == 0)
|
||
{
|
||
if (human_name == NULL)
|
||
human_name = "floating-point";
|
||
}
|
||
|
||
/* The 'which' parameter is only used when no regset is provided.
|
||
Thus we just set it to -1. */
|
||
get_core_register_section (regcache, regset, sect_name,
|
||
size, -1, human_name, required);
|
||
}
|
||
|
||
/* Get the registers out of a core file. This is the machine-
|
||
independent part. Fetch_core_registers is the machine-dependent
|
||
part, typically implemented in the xm-file for each
|
||
architecture. */
|
||
|
||
/* We just get all the registers, so we don't use regno. */
|
||
|
||
void
|
||
core_target::fetch_registers (struct regcache *regcache, int regno)
|
||
{
|
||
int i;
|
||
struct gdbarch *gdbarch;
|
||
|
||
if (!(core_gdbarch && gdbarch_iterate_over_regset_sections_p (core_gdbarch))
|
||
&& (core_vec == NULL || core_vec->core_read_registers == NULL))
|
||
{
|
||
fprintf_filtered (gdb_stderr,
|
||
"Can't fetch registers from this type of core file\n");
|
||
return;
|
||
}
|
||
|
||
gdbarch = regcache->arch ();
|
||
if (gdbarch_iterate_over_regset_sections_p (gdbarch))
|
||
gdbarch_iterate_over_regset_sections (gdbarch,
|
||
get_core_registers_cb,
|
||
(void *) regcache, NULL);
|
||
else
|
||
{
|
||
get_core_register_section (regcache, NULL,
|
||
".reg", 0, 0, "general-purpose", 1);
|
||
get_core_register_section (regcache, NULL,
|
||
".reg2", 0, 2, "floating-point", 0);
|
||
}
|
||
|
||
/* Mark all registers not found in the core as unavailable. */
|
||
for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++)
|
||
if (regcache_register_status (regcache, i) == REG_UNKNOWN)
|
||
regcache_raw_supply (regcache, i, NULL);
|
||
}
|
||
|
||
void
|
||
core_target::files_info ()
|
||
{
|
||
print_section_info (core_data, core_bfd);
|
||
}
|
||
|
||
struct spuid_list
|
||
{
|
||
gdb_byte *buf;
|
||
ULONGEST offset;
|
||
LONGEST len;
|
||
ULONGEST pos;
|
||
ULONGEST written;
|
||
};
|
||
|
||
static void
|
||
add_to_spuid_list (bfd *abfd, asection *asect, void *list_p)
|
||
{
|
||
struct spuid_list *list = (struct spuid_list *) list_p;
|
||
enum bfd_endian byte_order
|
||
= bfd_big_endian (abfd) ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE;
|
||
int fd, pos = 0;
|
||
|
||
sscanf (bfd_section_name (abfd, asect), "SPU/%d/regs%n", &fd, &pos);
|
||
if (pos == 0)
|
||
return;
|
||
|
||
if (list->pos >= list->offset && list->pos + 4 <= list->offset + list->len)
|
||
{
|
||
store_unsigned_integer (list->buf + list->pos - list->offset,
|
||
4, byte_order, fd);
|
||
list->written += 4;
|
||
}
|
||
list->pos += 4;
|
||
}
|
||
|
||
enum target_xfer_status
|
||
core_target::xfer_partial (enum target_object object, const char *annex,
|
||
gdb_byte *readbuf, const gdb_byte *writebuf,
|
||
ULONGEST offset, ULONGEST len, ULONGEST *xfered_len)
|
||
{
|
||
switch (object)
|
||
{
|
||
case TARGET_OBJECT_MEMORY:
|
||
return section_table_xfer_memory_partial (readbuf, writebuf,
|
||
offset, len, xfered_len,
|
||
core_data->sections,
|
||
core_data->sections_end,
|
||
NULL);
|
||
|
||
case TARGET_OBJECT_AUXV:
|
||
if (readbuf)
|
||
{
|
||
/* When the aux vector is stored in core file, BFD
|
||
represents this with a fake section called ".auxv". */
|
||
|
||
struct bfd_section *section;
|
||
bfd_size_type size;
|
||
|
||
section = bfd_get_section_by_name (core_bfd, ".auxv");
|
||
if (section == NULL)
|
||
return TARGET_XFER_E_IO;
|
||
|
||
size = bfd_section_size (core_bfd, section);
|
||
if (offset >= size)
|
||
return TARGET_XFER_EOF;
|
||
size -= offset;
|
||
if (size > len)
|
||
size = len;
|
||
|
||
if (size == 0)
|
||
return TARGET_XFER_EOF;
|
||
if (!bfd_get_section_contents (core_bfd, section, readbuf,
|
||
(file_ptr) offset, size))
|
||
{
|
||
warning (_("Couldn't read NT_AUXV note in core file."));
|
||
return TARGET_XFER_E_IO;
|
||
}
|
||
|
||
*xfered_len = (ULONGEST) size;
|
||
return TARGET_XFER_OK;
|
||
}
|
||
return TARGET_XFER_E_IO;
|
||
|
||
case TARGET_OBJECT_WCOOKIE:
|
||
if (readbuf)
|
||
{
|
||
/* When the StackGhost cookie is stored in core file, BFD
|
||
represents this with a fake section called
|
||
".wcookie". */
|
||
|
||
struct bfd_section *section;
|
||
bfd_size_type size;
|
||
|
||
section = bfd_get_section_by_name (core_bfd, ".wcookie");
|
||
if (section == NULL)
|
||
return TARGET_XFER_E_IO;
|
||
|
||
size = bfd_section_size (core_bfd, section);
|
||
if (offset >= size)
|
||
return TARGET_XFER_EOF;
|
||
size -= offset;
|
||
if (size > len)
|
||
size = len;
|
||
|
||
if (size == 0)
|
||
return TARGET_XFER_EOF;
|
||
if (!bfd_get_section_contents (core_bfd, section, readbuf,
|
||
(file_ptr) offset, size))
|
||
{
|
||
warning (_("Couldn't read StackGhost cookie in core file."));
|
||
return TARGET_XFER_E_IO;
|
||
}
|
||
|
||
*xfered_len = (ULONGEST) size;
|
||
return TARGET_XFER_OK;
|
||
|
||
}
|
||
return TARGET_XFER_E_IO;
|
||
|
||
case TARGET_OBJECT_LIBRARIES:
|
||
if (core_gdbarch
|
||
&& gdbarch_core_xfer_shared_libraries_p (core_gdbarch))
|
||
{
|
||
if (writebuf)
|
||
return TARGET_XFER_E_IO;
|
||
else
|
||
{
|
||
*xfered_len = gdbarch_core_xfer_shared_libraries (core_gdbarch,
|
||
readbuf,
|
||
offset, len);
|
||
|
||
if (*xfered_len == 0)
|
||
return TARGET_XFER_EOF;
|
||
else
|
||
return TARGET_XFER_OK;
|
||
}
|
||
}
|
||
/* FALL THROUGH */
|
||
|
||
case TARGET_OBJECT_LIBRARIES_AIX:
|
||
if (core_gdbarch
|
||
&& gdbarch_core_xfer_shared_libraries_aix_p (core_gdbarch))
|
||
{
|
||
if (writebuf)
|
||
return TARGET_XFER_E_IO;
|
||
else
|
||
{
|
||
*xfered_len
|
||
= gdbarch_core_xfer_shared_libraries_aix (core_gdbarch,
|
||
readbuf, offset,
|
||
len);
|
||
|
||
if (*xfered_len == 0)
|
||
return TARGET_XFER_EOF;
|
||
else
|
||
return TARGET_XFER_OK;
|
||
}
|
||
}
|
||
/* FALL THROUGH */
|
||
|
||
case TARGET_OBJECT_SPU:
|
||
if (readbuf && annex)
|
||
{
|
||
/* When the SPU contexts are stored in a core file, BFD
|
||
represents this with a fake section called
|
||
"SPU/<annex>". */
|
||
|
||
struct bfd_section *section;
|
||
bfd_size_type size;
|
||
char sectionstr[100];
|
||
|
||
xsnprintf (sectionstr, sizeof sectionstr, "SPU/%s", annex);
|
||
|
||
section = bfd_get_section_by_name (core_bfd, sectionstr);
|
||
if (section == NULL)
|
||
return TARGET_XFER_E_IO;
|
||
|
||
size = bfd_section_size (core_bfd, section);
|
||
if (offset >= size)
|
||
return TARGET_XFER_EOF;
|
||
size -= offset;
|
||
if (size > len)
|
||
size = len;
|
||
|
||
if (size == 0)
|
||
return TARGET_XFER_EOF;
|
||
if (!bfd_get_section_contents (core_bfd, section, readbuf,
|
||
(file_ptr) offset, size))
|
||
{
|
||
warning (_("Couldn't read SPU section in core file."));
|
||
return TARGET_XFER_E_IO;
|
||
}
|
||
|
||
*xfered_len = (ULONGEST) size;
|
||
return TARGET_XFER_OK;
|
||
}
|
||
else if (readbuf)
|
||
{
|
||
/* NULL annex requests list of all present spuids. */
|
||
struct spuid_list list;
|
||
|
||
list.buf = readbuf;
|
||
list.offset = offset;
|
||
list.len = len;
|
||
list.pos = 0;
|
||
list.written = 0;
|
||
bfd_map_over_sections (core_bfd, add_to_spuid_list, &list);
|
||
|
||
if (list.written == 0)
|
||
return TARGET_XFER_EOF;
|
||
else
|
||
{
|
||
*xfered_len = (ULONGEST) list.written;
|
||
return TARGET_XFER_OK;
|
||
}
|
||
}
|
||
return TARGET_XFER_E_IO;
|
||
|
||
case TARGET_OBJECT_SIGNAL_INFO:
|
||
if (readbuf)
|
||
{
|
||
if (core_gdbarch
|
||
&& gdbarch_core_xfer_siginfo_p (core_gdbarch))
|
||
{
|
||
LONGEST l = gdbarch_core_xfer_siginfo (core_gdbarch, readbuf,
|
||
offset, len);
|
||
|
||
if (l >= 0)
|
||
{
|
||
*xfered_len = l;
|
||
if (l == 0)
|
||
return TARGET_XFER_EOF;
|
||
else
|
||
return TARGET_XFER_OK;
|
||
}
|
||
}
|
||
}
|
||
return TARGET_XFER_E_IO;
|
||
|
||
default:
|
||
return this->beneath->xfer_partial (object, annex, readbuf,
|
||
writebuf, offset, len,
|
||
xfered_len);
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* Okay, let's be honest: threads gleaned from a core file aren't
|
||
exactly lively, are they? On the other hand, if we don't claim
|
||
that each & every one is alive, then we don't get any of them
|
||
to appear in an "info thread" command, which is quite a useful
|
||
behaviour.
|
||
*/
|
||
int
|
||
core_target::thread_alive (ptid_t ptid)
|
||
{
|
||
return 1;
|
||
}
|
||
|
||
/* Ask the current architecture what it knows about this core file.
|
||
That will be used, in turn, to pick a better architecture. This
|
||
wrapper could be avoided if targets got a chance to specialize
|
||
core_ops. */
|
||
|
||
const struct target_desc *
|
||
core_target::read_description ()
|
||
{
|
||
if (core_gdbarch && gdbarch_core_read_description_p (core_gdbarch))
|
||
{
|
||
const struct target_desc *result;
|
||
|
||
result = gdbarch_core_read_description (core_gdbarch, this, core_bfd);
|
||
if (result != NULL)
|
||
return result;
|
||
}
|
||
|
||
return this->beneath->read_description ();
|
||
}
|
||
|
||
const char *
|
||
core_target::pid_to_str (ptid_t ptid)
|
||
{
|
||
static char buf[64];
|
||
struct inferior *inf;
|
||
int pid;
|
||
|
||
/* The preferred way is to have a gdbarch/OS specific
|
||
implementation. */
|
||
if (core_gdbarch
|
||
&& gdbarch_core_pid_to_str_p (core_gdbarch))
|
||
return gdbarch_core_pid_to_str (core_gdbarch, ptid);
|
||
|
||
/* Otherwise, if we don't have one, we'll just fallback to
|
||
"process", with normal_pid_to_str. */
|
||
|
||
/* Try the LWPID field first. */
|
||
pid = ptid_get_lwp (ptid);
|
||
if (pid != 0)
|
||
return normal_pid_to_str (pid_to_ptid (pid));
|
||
|
||
/* Otherwise, this isn't a "threaded" core -- use the PID field, but
|
||
only if it isn't a fake PID. */
|
||
inf = find_inferior_ptid (ptid);
|
||
if (inf != NULL && !inf->fake_pid_p)
|
||
return normal_pid_to_str (ptid);
|
||
|
||
/* No luck. We simply don't have a valid PID to print. */
|
||
xsnprintf (buf, sizeof buf, "<main task>");
|
||
return buf;
|
||
}
|
||
|
||
const char *
|
||
core_target::thread_name (struct thread_info *thr)
|
||
{
|
||
if (core_gdbarch
|
||
&& gdbarch_core_thread_name_p (core_gdbarch))
|
||
return gdbarch_core_thread_name (core_gdbarch, thr);
|
||
return NULL;
|
||
}
|
||
|
||
int
|
||
core_target::has_memory ()
|
||
{
|
||
return (core_bfd != NULL);
|
||
}
|
||
|
||
int
|
||
core_target::has_stack ()
|
||
{
|
||
return (core_bfd != NULL);
|
||
}
|
||
|
||
int
|
||
core_target::has_registers ()
|
||
{
|
||
return (core_bfd != NULL);
|
||
}
|
||
|
||
/* Implement the to_info_proc method. */
|
||
|
||
bool
|
||
core_target::info_proc (const char *args, enum info_proc_what request)
|
||
{
|
||
struct gdbarch *gdbarch = get_current_arch ();
|
||
|
||
/* Since this is the core file target, call the 'core_info_proc'
|
||
method on gdbarch, not 'info_proc'. */
|
||
if (gdbarch_core_info_proc_p (gdbarch))
|
||
gdbarch_core_info_proc (gdbarch, args, request);
|
||
|
||
return true;
|
||
}
|
||
|
||
void
|
||
_initialize_corelow (void)
|
||
{
|
||
if (the_core_target != NULL)
|
||
internal_error (__FILE__, __LINE__,
|
||
_("core target already exists (\"%s\")."),
|
||
the_core_target->longname ());
|
||
the_core_target = &core_ops;
|
||
|
||
add_target_with_completer (&core_ops, filename_completer);
|
||
}
|