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9 Commits

Author SHA1 Message Date
Pedro Alves
8b88a78e63 target_stack -> current_top_target() throughout 
The recent C++ification of target_ops replaced references to the old
"current_target" squashed target throughout with references to a
"target_stack" pointer.  I had picked the "target_stack" name very
early in the multi-target work, and managed to stick with it, even
though it's a bit of a misnomer, since it isn't really a "target
stack" object, but a pointer into the current top target in the stack.
As I'm splitting more pieces off of the multi-target branch, I've come
to think that it's better to rename it now.  A following patch will
introduce a new class to represent a target stack, and "target_stack"
would be _its_ ideal name.  (In the branch, the class is called
a_target_stack to work around the clash.)

Thus this commit renames target_stack to current_top_target and
replaces all references throughout.  Also, while at it,
current_top_target is made a function instead of a pointer, to make it
possible to change its internal implementation without leaking
implementation details out.  In a couple patches, the implementation
of the function will change to refer to a target stack object, and
then further down the multi-target work, it'll change again to find
the right target stack for the current inferior.

gdb/ChangeLog:
2018-06-07  Pedro Alves  <palves@redhat.com>

	* target.h (target_stack): Delete.
	(current_top_target): Declare function.
	* target.c (target_stack): Delete.
	(g_current_top_target): New.
	(current_top_target): New function.
	* auxv.c: Use current_top_target instead of target_stack
	throughout.
	* avr-tdep.c: Likewise.
	* breakpoint.c: Likewise.
	* corefile.c: Likewise.
	* elfread.c: Likewise.
	* eval.c: Likewise.
	* exceptions.c: Likewise.
	* frame.c: Likewise.
	* gdbarch-selftests.c: Likewise.
	* gnu-v3-abi.c: Likewise.
	* ia64-tdep.c: Likewise.
	* ia64-vms-tdep.c: Likewise.
	* infcall.c: Likewise.
	* infcmd.c: Likewise.
	* infrun.c: Likewise.
	* linespec.c: Likewise.
	* linux-tdep.c: Likewise.
	* minsyms.c: Likewise.
	* ppc-linux-nat.c: Likewise.
	* ppc-linux-tdep.c: Likewise.
	* procfs.c: Likewise.
	* regcache.c: Likewise.
	* remote.c: Likewise.
	* rs6000-tdep.c: Likewise.
	* s390-linux-nat.c: Likewise.
	* s390-tdep.c: Likewise.
	* solib-aix.c: Likewise.
	* solib-darwin.c: Likewise.
	* solib-dsbt.c: Likewise.
	* solib-spu.c: Likewise.
	* solib-svr4.c: Likewise.
	* solib-target.c: Likewise.
	* sparc-tdep.c: Likewise.
	* sparc64-tdep.c: Likewise.
	* spu-tdep.c: Likewise.
	* symfile.c: Likewise.
	* symtab.c: Likewise.
	* target-descriptions.c: Likewise.
	* target-memory.c: Likewise.
	* target.c: Likewise.
	* target.h: Likewise.
	* tracefile-tfile.c: Likewise.
	* tracepoint.c: Likewise.
	* valops.c: Likewise.
	* valprint.c: Likewise.
	* value.c: Likewise.
	* windows-tdep.c: Likewise.
	* mi/mi-main.c: Likewise.
 2018-06-07 17:27:46 +01:00
Pedro Alves
f6ac5f3d63 Convert struct target_ops to C++ 
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.
 2018-05-03 00:48:36 +01:00
Joel Brobecker
e2882c8578 Update copyright year range in all GDB files 
gdb/ChangeLog:

        Update copyright year range in all GDB files
 2018-01-02 07:38:06 +04:00
Yao Qi
1b30aaa566 regcache::cooked_read unit test 
This patch adds a unit test to regcache::cooked_read.  This unit test is a
little different from normal unit test, it is more about conformance test
or interaction test.  This test pass both raw register number and pseudo
register number to regcache::cooked_read, in order to inspect 1) return
value of cooked_read, 2) how are target_ops to_xfer_partial,
to_{fetch,store}_registers called (because regcache is updated by means of
these three target_ops methods).  With this test here, we have a clear
picture about how each port of GDB get cooked registers.

This patch also shares some code on mock target.

gdb:

2017-11-24  Yao Qi  <yao.qi@linaro.org>

	* gdbarch-selftests.c (test_target_has_registers): Move it to
	target.c.
	(test_target_has_stack): Likewise.
	(test_target_has_memory): Likewise.
	(test_target_prepare_to_store): Likewise.
	(test_target_store_registers): Likewise.
	(test_target_ops): Likewise.
	* regcache.c: Include selftest-arch.h and gdbthread.h.
	(target_ops_no_register): New class.
	(test_target_fetch_registers): New.
	(test_target_store_registers): New.
	(test_target_xfer_partial): New.
	(readwrite_regcache): New.
	(cooked_read_test): New.
	(_initialize_regcache): Register the test.
	* target.c: (test_target_has_registers): Moved from
	gdbarch-selftests.c.
	(test_target_has_stack): Likewise.
	(test_target_has_memory): Likewise.
	(test_target_prepare_to_store): Likewise.
	(test_target_store_registers): Likewise.
	* target.h (test_target_ops): New class.
 2017-11-24 13:04:30 +00:00
Ulrich Weigand
f69fdf9bca Target FP: Add string routines to target-float.{c,h} 
This adds target_float_to_string and target_float_from_string,
which dispatch to the corresponding floatformat_ or decimal_ routines.

Existing users of those routines are changed to use the new
target-float routines instead (most of those places already handle
both binary and decimal FP).

In addition, two other places are changes to use target_float_from_string:

- define_symbol in stabsread.c, when parsing a floating-point literal
  from stabs debug info

- gdbarch-selftest.c when initializing a target format values (to
  eliminate use of DOUBLEST there).

gdb/ChangeLog:
2017-11-06  Ulrich Weigand  <uweigand@de.ibm.com>

	* target-float.c (target_float_to_string): New function.
	(target_float_from_string): New function.
	* target-float.h (target_float_to_string): Add prototype.
	(target_float_from_string): Add prototype.

	* valprint.c: Include "target-float.h".  Do not include
	"doublest.h" and "dfp.h".
	(print_floating): Use target_float_to_string.
	* printcmd.c: Include "target-float.h".  Do not include "dfp.h".
	(printf_floating): Use target_float_to_string.
	* i387-tdep.c: Include "target-float.h".  Do not include "doublest.h".
	(print_i387_value): Use target_float_to_string.
	* mips-tdep.c: Include "target-float.h".
	(mips_print_fp_register): Use target_float_to_string.
	* sh64-tdep.c: Include "target-float.h".
	(sh64_do_fp_register): Use target_float_to_string.

	* parse.c: Include "target-float.h".  Do not include
	"doublest.h" and "dfp.h".
	(parse_float): Use target_float_from_string.
	* stabsread.c: Include "target-float.h".  Do not include "doublest.h".
	(define_symbol): Use target_float_from_string.
	* gdbarch-selftests.c: Include "target-float.h".
	(register_to_value_test): Use target_float_from_string.
 2017-11-06 15:56:35 +01:00
Pedro Alves
55b11ddf16 Redesign mock environment for gdbarch selftests 
A following patch will remove this hack from within regcache's
implementation:

  struct regcache *
  get_thread_arch_regcache (ptid_t ptid, struct gdbarch *gdbarch)
  {
    struct address_space *aspace;

    /* For the benefit of "maint print registers" & co when debugging an
       executable, allow dumping the regcache even when there is no
       thread selected (target_thread_address_space internal-errors if
       no address space is found).  Note that normal user commands will
       fail higher up on the call stack due to no
       target_has_registers.  */
    aspace = (ptid_equal (null_ptid, ptid)
	      ? NULL
	      : target_thread_address_space (ptid));

i.e., it'll no longer be possible to try to build a regcache for
null_ptid.  That change alone would regress the gdbarch self tests
though, causing this:

  (gdb) maintenance selftest
  [...]
  Running selftest register_to_value.
  src/gdb/inferior.c:309: internal-error: inferior* find_inferior_pid(int): Assertion `pid != 0' failed.
  A problem internal to GDB has been detected,
  further debugging may prove unreliable.
  Quit this debugging session? (y or n) FAIL: gdb.gdb/unittest.exp: maintenance selftest (GDB internal error)

The problem is that the way the mocking environment for those unit
tests is written is a bit fragile: it creates a special purpose
regcache (and sentinel's frame), using whatever is the current
inferior_ptid (usually null_ptid), and assumes get_current_regcache
will find that in the regcache::current_regcache list.

This commit changes the way the mock environment is created.  It
eliminates the special regcache and frame and instead creates a fuller
mock environment, with a custom mock target_ops, and then a mock
inferior and thread "running" on that target.

If there's already a running target when you type "maint selftest",
then we error out, instead of pushing a new target on top of the
existing one (and thus killing the debug session).  This results in:

  (gdb) maint selftest
  (...)
  Self test failed: arch i386: target already pushed
  Self test failed: arch i386:x86-64: target already pushed
  Self test failed: arch i386:x64-32: target already pushed
  Self test failed: arch i8086: target already pushed
  Self test failed: arch i386:intel: target already pushed
  Self test failed: arch i386:x86-64:intel: target already pushed
  Self test failed: arch i386:x64-32:intel: target already pushed
  Self test failed: arch i386:nacl: target already pushed
  Self test failed: arch i386:x86-64:nacl: target already pushed
  Self test failed: arch i386:x64-32:nacl: target already pushed
  Self test failed: self-test failed at /home/pedro/gdb/mygit/src/gdb/selftest-arch.c:86
  (...)
  Ran 19 unit tests, 1 failed

I think that's OK, because self tests are really meant to be run from
a clean state right after GDB is started.  I'm adding that erroring
out just as safe measure just in case someone types "maint selftest"
on the command line while already debugging something (as I've done
it).

(In my multi-target branch, where this patch originated from, we don't
actually need to error out, because there each inferior has its own
target stack).

Also, note that the current code was doing:

 current_inferior()->gdbarch = gdbarch;

without taking care to restore the previous gdbarch.  This means that
GDB's state was being left inconsistent after running the self tests,
further supporting the point that there's probably not much
expectation that mixing "maint selftests" and regular debugging in the
same GDB invocation really works.  This patch fixes that, regardless.

gdb/ChangeLog:
2017-10-04  Pedro Alves  <palves@redhat.com>

	* frame.c (create_test_frame): Delete.
	* frame.h (create_test_frame): Delete.
	* gdbarch-selftests.c: Include gdbthread.h and target.h.
	(class regcache_test): Delete.
	(test_target_has_registers, test_target_has_stack)
	(test_target_has_memory, test_target_prepare_to_store)
	(test_target_store_registers): New functions.
	(test_target_ops): New class.
	(register_to_value_test): Error out if there's already a
	process_stratum (or higher) target pushed.  Create a fuller mock
	environment, with mock target_ops, inferior, address space, thread
	and inferior_ptid.
	* progspace.c (struct address_space): Move to ...
	* progspace.h (struct address_space): ... here.
	* regcache.h (regcache::~regcache, regcache::raw_write)
	[GDB_SELF_TEST]: No longer virtual.
 2017-10-04 18:21:09 +01:00
Simon Marchi
1526853e34 Add selftests run filtering 
With the growing number of selftests, I think it would be useful to be
able to run only a subset of the tests.  This patch associates a name to
each registered selftest.  It then allows doing something like:

  (gdb) maintenance selftest aarch64
  Running self-tests.
  Running selftest aarch64-analyze-prologue.
  Running selftest aarch64-process-record.
  Ran 2 unit tests, 0 failed

or with gdbserver:

  ./gdbserver --selftest=aarch64

In both cases, only the tests that contain "aarch64" in their name are
ran.  To help validate that the tests you want to run were actually ran,
it also prints a message with the test name before running each test.

Right now, all the arch-dependent tests are registered as a single test
of the selftests.  To be able to filter those too, I made them
"first-class citizen" selftests.  The selftest type is an interface,
with different implementations for "simple selftests" and "arch
selftests".  The run_tests function simply iterates on that an invokes
operator() on each test.

I changed the tests data structure from a vector to a map, because

  - it allows iterating in a stable (alphabetical) order
  - it allows to easily verify if a test with a given name has been
    registered, to avoid duplicates

There's also a new command "maintenance info selftests" that lists the
registered selftests.

gdb/ChangeLog:

	* common/selftest.h (selftest): New struct/interface.
	(register_test): Add name parameter, add new overload.
	(run_tests): Add filter parameter.
	(for_each_selftest_ftype): New typedef.
	(for_each_selftest): New declaration.
	* common/selftest.c (tests): Change type to
	map<string, unique_ptr<selftest>>.
	(simple_selftest): New struct.
	(register_test): New function.
	(register_test): Add name parameter and use it.
	(run_tests): Add filter parameter and use it.  Add prints.
	Adjust to vector -> map change.
	* aarch64-tdep.c (_initialize_aarch64_tdep): Add names when
	registering selftests.
	* arm-tdep.c (_initialize_arm_tdep): Likewise.
	* disasm-selftests.c (_initialize_disasm_selftests): Likewise.
	* dwarf2-frame.c (_initialize_dwarf2_frame): Likewise.
	* dwarf2loc.c (_initialize_dwarf2loc): Likewise.
	* findvar.c (_initialize_findvar): Likewise.
	* gdbarch-selftests.c (_initialize_gdbarch_selftests): Likewise.
	* maint.c (maintenance_selftest): Update call to run_tests.
	(maintenance_info_selftests): New function.
	(_initialize_maint_cmds): Register "maintenance info selftests"
	command.  Update "maintenance selftest" doc.
	* regcache.c (_initialize_regcache): Add names when registering
	selftests.
	* rust-exp.y (_initialize_rust_exp): Likewise.
	* selftest-arch.c (gdbarch_selftest): New struct.
	(gdbarch_tests): Remove.
	(register_test_foreach_arch): Add name parameter.  Call
	register_test.
	(tests_with_arch): Remove, move most content to
	gdbarch_selftest::operator().
	(_initialize_selftests_foreach_arch): Remove.
	* selftest-arch.h (register_test_foreach_arch): Add name
	parameter.
	(run_tests_with_arch): New declaration.
	* utils-selftests.c (_initialize_utils_selftests): Add names
	when registering selftests.
	* utils.c (_initialize_utils): Likewise.
	* unittests/array-view-selftests.c
	(_initialize_array_view_selftests): Likewise.
	* unittests/environ-selftests.c (_initialize_environ_selftests):
	Likewise.
	* unittests/function-view-selftests.c
	(_initialize_function_view_selftests): Likewise.
	* unittests/offset-type-selftests.c
	(_initialize_offset_type_selftests): Likewise.
	* unittests/optional-selftests.c
	(_initialize_optional_selftests): Likewise.
	* unittests/scoped_restore-selftests.c
	(_initialize_scoped_restore_selftests): Likewise.
	* NEWS: Document "maintenance selftest" and "maint info
	selftests".

gdb/gdbserver/ChangeLog:

	* server.c (captured_main): Accept argument for --selftest.
	Update run_tests call.
	* linux-x86-tdesc-selftest.c (initialize_low_tdesc): Add names
	when registering selftests.

gdb/doc/ChangeLog:

	* gdb.texinfo (Maintenance Commands): Document filter parameter
	of "maint selftest".  Document "maint info selftests" command.
 2017-09-16 14:06:03 +02:00
Yao Qi
7649770c8e Put selftests api into selftests namespace 
This patch changes register_self_test to selftests::register_test,
and run_self_tests to selftest::run_tests.

gdb:

2017-08-18  Yao Qi  <yao.qi@linaro.org>

	* selftest.c (register_self_test): Rename it to
	selftests::register_test.
	(run_self_tests): selftest::run_tests.
	* selftest.h: Update declarations.
	* selftest-arch.c (register_self_test_foreach_arch): Rename it to
	selftests::register_test_foreach_arch.
	* selftest-arch.h: Update declaration.
	* aarch64-tdep.c: Update.
	* arm-tdep.c: Likewise.
	* disasm-selftests.c: Likewise.
	* dwarf2loc.c: Likewise.
	* dwarf2-frame.c: Likewise.
	* findvar.c: Likewise.
	* gdbarch-selftests.c: Likewise.
	* maint.c (maintenance_selftest): Likewise.
	* regcache.c: Likewise.
	* rust-exp.y: Likewise.
	* selftest-arch.c: Likewise.
	* unittests/environ-selftests.c: Likewise.
	* unittests/function-view-selftests.c: Likewise.
	* unittests/offset-type-selftests.c: Likewise.
	* unittests/optional-selftests.c: Likewise.
	* unittests/scoped_restore-selftests.c: Likewise.
	* utils-selftests.c: Likewise.
 2017-08-18 09:20:43 +01:00
Yao Qi
b77b02a5ca Add unit test to gdbarch methods register_to_value and value_to_register 
This patch adds one unit test for gdbarch methods register_to_value and
value_to_register.  The test pass different combinations of {regnu, type}
to gdbarch_register_to_value and gdbarch_value_to_register.  In order
to do the test, add a new function create_new_frame to create a fake
frame.  It can be improved after we converted frame_info to class.

In order to isolate regcache (from target_ops operations on writing
registers, like target_store_registers), the sub-class of regcache in the
test override raw_write.  Also, in order to get the right regcache from
get_thread_arch_aspace_regcache, the sub-class of regcache inserts itself
to current_regcache.

Suppose I incorrectly modified the size of buffer as below,

@@ -1228,7 +1228,7 @@ ia64_register_to_value (struct frame_info *frame, int regnum,
                        int *optimizedp, int *unavailablep)
 {
   struct gdbarch *gdbarch = get_frame_arch (frame);
-  gdb_byte in[MAX_REGISTER_SIZE];
+  gdb_byte in[1];

   /* Convert to TYPE.  */
   if (!get_frame_register_bytes (frame, regnum, 0,

build GDB with "-fsanitize=address" and run unittest.exp, asan can detect
such error

==2302==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7fff98193870 at pc 0xbd55ea bp 0x7fff981935a0 sp 0x7fff98193598
WRITE of size 16 at 0x7fff98193870 thread T0
    #0 0xbd55e9 in frame_register_unwind(frame_info*, int, int*, int*, lval_type*, unsigned long*, int*, unsigned char*) /home/yao/SourceCode/gnu/gdb/git/gdb/frame.c:1119
    #1 0xbd58c8 in frame_register(frame_info*, int, int*, int*, lval_type*, unsigned long*, int*, unsigned char*) /home/yao/SourceCode/gnu/gdb/git/gdb/frame.c:1147
    #2 0xbd6e25 in get_frame_register_bytes(frame_info*, int, unsigned long, int, unsigned char*, int*, int*) /home/yao/SourceCode/gnu/gdb/git/gdb/frame.c:1427
    #3 0x70080a in ia64_register_to_value /home/yao/SourceCode/gnu/gdb/git/gdb/ia64-tdep.c:1236
    #4 0xbf570e in gdbarch_register_to_value(gdbarch*, frame_info*, int, type*, unsigned char*, int*, int*) /home/yao/SourceCode/gnu/gdb/git/gdb/gdbarch.c:2619
    #5 0xc05975 in register_to_value_test /home/yao/SourceCode/gnu/gdb/git/gdb/gdbarch-selftests.c:131

Or, even if GDB is not built with asan, GDB just crashes.

*** stack smashing detected ***: ./gdb terminated
Aborted (core dumped)

gdb:

2017-05-24  Yao Qi  <yao.qi@linaro.org>

	* Makefile.in (SFILES): Add gdbarch-selftests.c.
	(COMMON_OBS): Add gdbarch-selftests.o.
	* frame.c [GDB_SELF_TESTS] (create_new_frame): New function.
	* frame.h [GDB_SELF_TESTS] (create_new_frame): Declare.
	* gdbarch-selftests.c: New file.
	* regcache.h (regcache) <~regcache>: Mark it virtual if
	GDB_SELF_TEST.
	<raw_write>: Likewise.
 2017-05-24 22:15:23 +01:00