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.
4214 lines
106 KiB
C
4214 lines
106 KiB
C
/* Select target systems and architectures at runtime for GDB.
|
||
|
||
Copyright (C) 1990-2018 Free Software Foundation, Inc.
|
||
|
||
Contributed by Cygnus Support.
|
||
|
||
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 "target.h"
|
||
#include "target-dcache.h"
|
||
#include "gdbcmd.h"
|
||
#include "symtab.h"
|
||
#include "inferior.h"
|
||
#include "infrun.h"
|
||
#include "bfd.h"
|
||
#include "symfile.h"
|
||
#include "objfiles.h"
|
||
#include "dcache.h"
|
||
#include <signal.h>
|
||
#include "regcache.h"
|
||
#include "gdbcore.h"
|
||
#include "target-descriptions.h"
|
||
#include "gdbthread.h"
|
||
#include "solib.h"
|
||
#include "exec.h"
|
||
#include "inline-frame.h"
|
||
#include "tracepoint.h"
|
||
#include "gdb/fileio.h"
|
||
#include "agent.h"
|
||
#include "auxv.h"
|
||
#include "target-debug.h"
|
||
#include "top.h"
|
||
#include "event-top.h"
|
||
#include <algorithm>
|
||
#include "byte-vector.h"
|
||
#include "terminal.h"
|
||
#include <algorithm>
|
||
|
||
static void generic_tls_error (void) ATTRIBUTE_NORETURN;
|
||
|
||
static void default_terminal_info (struct target_ops *, const char *, int);
|
||
|
||
static int default_watchpoint_addr_within_range (struct target_ops *,
|
||
CORE_ADDR, CORE_ADDR, int);
|
||
|
||
static int default_region_ok_for_hw_watchpoint (struct target_ops *,
|
||
CORE_ADDR, int);
|
||
|
||
static void default_rcmd (struct target_ops *, const char *, struct ui_file *);
|
||
|
||
static ptid_t default_get_ada_task_ptid (struct target_ops *self,
|
||
long lwp, long tid);
|
||
|
||
static int default_follow_fork (struct target_ops *self, int follow_child,
|
||
int detach_fork);
|
||
|
||
static void default_mourn_inferior (struct target_ops *self);
|
||
|
||
static int default_search_memory (struct target_ops *ops,
|
||
CORE_ADDR start_addr,
|
||
ULONGEST search_space_len,
|
||
const gdb_byte *pattern,
|
||
ULONGEST pattern_len,
|
||
CORE_ADDR *found_addrp);
|
||
|
||
static int default_verify_memory (struct target_ops *self,
|
||
const gdb_byte *data,
|
||
CORE_ADDR memaddr, ULONGEST size);
|
||
|
||
static struct address_space *default_thread_address_space
|
||
(struct target_ops *self, ptid_t ptid);
|
||
|
||
static void tcomplain (void) ATTRIBUTE_NORETURN;
|
||
|
||
static struct target_ops *find_default_run_target (const char *);
|
||
|
||
static struct gdbarch *default_thread_architecture (struct target_ops *ops,
|
||
ptid_t ptid);
|
||
|
||
static int dummy_find_memory_regions (struct target_ops *self,
|
||
find_memory_region_ftype ignore1,
|
||
void *ignore2);
|
||
|
||
static char *dummy_make_corefile_notes (struct target_ops *self,
|
||
bfd *ignore1, int *ignore2);
|
||
|
||
static const char *default_pid_to_str (struct target_ops *ops, ptid_t ptid);
|
||
|
||
static enum exec_direction_kind default_execution_direction
|
||
(struct target_ops *self);
|
||
|
||
/* Vector of existing target structures. */
|
||
typedef struct target_ops *target_ops_p;
|
||
DEF_VEC_P (target_ops_p);
|
||
static VEC (target_ops_p) *target_structs;
|
||
|
||
/* The initial current target, so that there is always a semi-valid
|
||
current target. */
|
||
|
||
static struct target_ops *the_dummy_target;
|
||
static struct target_ops *the_debug_target;
|
||
|
||
/* Top of target stack. */
|
||
/* The target structure we are currently using to talk to a process
|
||
or file or whatever "inferior" we have. */
|
||
|
||
struct target_ops *target_stack;
|
||
|
||
/* Command list for target. */
|
||
|
||
static struct cmd_list_element *targetlist = NULL;
|
||
|
||
/* Nonzero if we should trust readonly sections from the
|
||
executable when reading memory. */
|
||
|
||
static int trust_readonly = 0;
|
||
|
||
/* Nonzero if we should show true memory content including
|
||
memory breakpoint inserted by gdb. */
|
||
|
||
static int show_memory_breakpoints = 0;
|
||
|
||
/* These globals control whether GDB attempts to perform these
|
||
operations; they are useful for targets that need to prevent
|
||
inadvertant disruption, such as in non-stop mode. */
|
||
|
||
int may_write_registers = 1;
|
||
|
||
int may_write_memory = 1;
|
||
|
||
int may_insert_breakpoints = 1;
|
||
|
||
int may_insert_tracepoints = 1;
|
||
|
||
int may_insert_fast_tracepoints = 1;
|
||
|
||
int may_stop = 1;
|
||
|
||
/* Non-zero if we want to see trace of target level stuff. */
|
||
|
||
static unsigned int targetdebug = 0;
|
||
|
||
static void
|
||
set_targetdebug (const char *args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
if (targetdebug)
|
||
push_target (the_debug_target);
|
||
else
|
||
unpush_target (the_debug_target);
|
||
}
|
||
|
||
static void
|
||
show_targetdebug (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("Target debugging is %s.\n"), value);
|
||
}
|
||
|
||
/* The user just typed 'target' without the name of a target. */
|
||
|
||
static void
|
||
target_command (const char *arg, int from_tty)
|
||
{
|
||
fputs_filtered ("Argument required (target name). Try `help target'\n",
|
||
gdb_stdout);
|
||
}
|
||
|
||
/* Default target_has_* methods for process_stratum targets. */
|
||
|
||
int
|
||
default_child_has_all_memory ()
|
||
{
|
||
/* If no inferior selected, then we can't read memory here. */
|
||
if (ptid_equal (inferior_ptid, null_ptid))
|
||
return 0;
|
||
|
||
return 1;
|
||
}
|
||
|
||
int
|
||
default_child_has_memory ()
|
||
{
|
||
/* If no inferior selected, then we can't read memory here. */
|
||
if (ptid_equal (inferior_ptid, null_ptid))
|
||
return 0;
|
||
|
||
return 1;
|
||
}
|
||
|
||
int
|
||
default_child_has_stack ()
|
||
{
|
||
/* If no inferior selected, there's no stack. */
|
||
if (ptid_equal (inferior_ptid, null_ptid))
|
||
return 0;
|
||
|
||
return 1;
|
||
}
|
||
|
||
int
|
||
default_child_has_registers ()
|
||
{
|
||
/* Can't read registers from no inferior. */
|
||
if (ptid_equal (inferior_ptid, null_ptid))
|
||
return 0;
|
||
|
||
return 1;
|
||
}
|
||
|
||
int
|
||
default_child_has_execution (ptid_t the_ptid)
|
||
{
|
||
/* If there's no thread selected, then we can't make it run through
|
||
hoops. */
|
||
if (ptid_equal (the_ptid, null_ptid))
|
||
return 0;
|
||
|
||
return 1;
|
||
}
|
||
|
||
|
||
int
|
||
target_has_all_memory_1 (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = target_stack; t != NULL; t = t->beneath)
|
||
if (t->has_all_memory ())
|
||
return 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
target_has_memory_1 (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = target_stack; t != NULL; t = t->beneath)
|
||
if (t->has_memory ())
|
||
return 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
target_has_stack_1 (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = target_stack; t != NULL; t = t->beneath)
|
||
if (t->has_stack ())
|
||
return 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
target_has_registers_1 (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = target_stack; t != NULL; t = t->beneath)
|
||
if (t->has_registers ())
|
||
return 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
target_has_execution_1 (ptid_t the_ptid)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = target_stack; t != NULL; t = t->beneath)
|
||
if (t->has_execution (the_ptid))
|
||
return 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
target_has_execution_current (void)
|
||
{
|
||
return target_has_execution_1 (inferior_ptid);
|
||
}
|
||
|
||
/* This is used to implement the various target commands. */
|
||
|
||
static void
|
||
open_target (const char *args, int from_tty, struct cmd_list_element *command)
|
||
{
|
||
struct target_ops *ops = (struct target_ops *) get_cmd_context (command);
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "-> %s->to_open (...)\n",
|
||
ops->shortname ());
|
||
|
||
ops->open (args, from_tty);
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "<- %s->to_open (%s, %d)\n",
|
||
ops->shortname (), args, from_tty);
|
||
}
|
||
|
||
/* Add possible target architecture T to the list and add a new
|
||
command 'target T->shortname ()'. Set COMPLETER as the command's
|
||
completer if not NULL. */
|
||
|
||
void
|
||
add_target_with_completer (struct target_ops *t,
|
||
completer_ftype *completer)
|
||
{
|
||
struct cmd_list_element *c;
|
||
|
||
VEC_safe_push (target_ops_p, target_structs, t);
|
||
|
||
if (targetlist == NULL)
|
||
add_prefix_cmd ("target", class_run, target_command, _("\
|
||
Connect to a target machine or process.\n\
|
||
The first argument is the type or protocol of the target machine.\n\
|
||
Remaining arguments are interpreted by the target protocol. For more\n\
|
||
information on the arguments for a particular protocol, type\n\
|
||
`help target ' followed by the protocol name."),
|
||
&targetlist, "target ", 0, &cmdlist);
|
||
c = add_cmd (t->shortname (), no_class, t->doc (), &targetlist);
|
||
set_cmd_sfunc (c, open_target);
|
||
set_cmd_context (c, t);
|
||
if (completer != NULL)
|
||
set_cmd_completer (c, completer);
|
||
}
|
||
|
||
/* Add a possible target architecture to the list. */
|
||
|
||
void
|
||
add_target (struct target_ops *t)
|
||
{
|
||
add_target_with_completer (t, NULL);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
add_deprecated_target_alias (struct target_ops *t, const char *alias)
|
||
{
|
||
struct cmd_list_element *c;
|
||
char *alt;
|
||
|
||
/* If we use add_alias_cmd, here, we do not get the deprecated warning,
|
||
see PR cli/15104. */
|
||
c = add_cmd (alias, no_class, t->doc (), &targetlist);
|
||
set_cmd_sfunc (c, open_target);
|
||
set_cmd_context (c, t);
|
||
alt = xstrprintf ("target %s", t->shortname ());
|
||
deprecate_cmd (c, alt);
|
||
}
|
||
|
||
/* Stub functions */
|
||
|
||
void
|
||
target_kill (void)
|
||
{
|
||
target_stack->kill ();
|
||
}
|
||
|
||
void
|
||
target_load (const char *arg, int from_tty)
|
||
{
|
||
target_dcache_invalidate ();
|
||
target_stack->load (arg, from_tty);
|
||
}
|
||
|
||
/* Define it. */
|
||
|
||
target_terminal_state target_terminal::m_terminal_state
|
||
= target_terminal_state::is_ours;
|
||
|
||
/* See target/target.h. */
|
||
|
||
void
|
||
target_terminal::init (void)
|
||
{
|
||
target_stack->terminal_init ();
|
||
|
||
m_terminal_state = target_terminal_state::is_ours;
|
||
}
|
||
|
||
/* See target/target.h. */
|
||
|
||
void
|
||
target_terminal::inferior (void)
|
||
{
|
||
struct ui *ui = current_ui;
|
||
|
||
/* A background resume (``run&'') should leave GDB in control of the
|
||
terminal. */
|
||
if (ui->prompt_state != PROMPT_BLOCKED)
|
||
return;
|
||
|
||
/* Since we always run the inferior in the main console (unless "set
|
||
inferior-tty" is in effect), when some UI other than the main one
|
||
calls target_terminal::inferior, then we leave the main UI's
|
||
terminal settings as is. */
|
||
if (ui != main_ui)
|
||
return;
|
||
|
||
/* If GDB is resuming the inferior in the foreground, install
|
||
inferior's terminal modes. */
|
||
|
||
struct inferior *inf = current_inferior ();
|
||
|
||
if (inf->terminal_state != target_terminal_state::is_inferior)
|
||
{
|
||
target_stack->terminal_inferior ();
|
||
inf->terminal_state = target_terminal_state::is_inferior;
|
||
}
|
||
|
||
m_terminal_state = target_terminal_state::is_inferior;
|
||
|
||
/* If the user hit C-c before, pretend that it was hit right
|
||
here. */
|
||
if (check_quit_flag ())
|
||
target_pass_ctrlc ();
|
||
}
|
||
|
||
/* See target/target.h. */
|
||
|
||
void
|
||
target_terminal::restore_inferior (void)
|
||
{
|
||
struct ui *ui = current_ui;
|
||
|
||
/* See target_terminal::inferior(). */
|
||
if (ui->prompt_state != PROMPT_BLOCKED || ui != main_ui)
|
||
return;
|
||
|
||
/* Restore the terminal settings of inferiors that were in the
|
||
foreground but are now ours_for_output due to a temporary
|
||
target_target::ours_for_output() call. */
|
||
|
||
{
|
||
scoped_restore_current_inferior restore_inferior;
|
||
struct inferior *inf;
|
||
|
||
ALL_INFERIORS (inf)
|
||
{
|
||
if (inf->terminal_state == target_terminal_state::is_ours_for_output)
|
||
{
|
||
set_current_inferior (inf);
|
||
target_stack->terminal_inferior ();
|
||
inf->terminal_state = target_terminal_state::is_inferior;
|
||
}
|
||
}
|
||
}
|
||
|
||
m_terminal_state = target_terminal_state::is_inferior;
|
||
|
||
/* If the user hit C-c before, pretend that it was hit right
|
||
here. */
|
||
if (check_quit_flag ())
|
||
target_pass_ctrlc ();
|
||
}
|
||
|
||
/* Switch terminal state to DESIRED_STATE, either is_ours, or
|
||
is_ours_for_output. */
|
||
|
||
static void
|
||
target_terminal_is_ours_kind (target_terminal_state desired_state)
|
||
{
|
||
scoped_restore_current_inferior restore_inferior;
|
||
struct inferior *inf;
|
||
|
||
/* Must do this in two passes. First, have all inferiors save the
|
||
current terminal settings. Then, after all inferiors have add a
|
||
chance to safely save the terminal settings, restore GDB's
|
||
terminal settings. */
|
||
|
||
ALL_INFERIORS (inf)
|
||
{
|
||
if (inf->terminal_state == target_terminal_state::is_inferior)
|
||
{
|
||
set_current_inferior (inf);
|
||
target_stack->terminal_save_inferior ();
|
||
}
|
||
}
|
||
|
||
ALL_INFERIORS (inf)
|
||
{
|
||
/* Note we don't check is_inferior here like above because we
|
||
need to handle 'is_ours_for_output -> is_ours' too. Careful
|
||
to never transition from 'is_ours' to 'is_ours_for_output',
|
||
though. */
|
||
if (inf->terminal_state != target_terminal_state::is_ours
|
||
&& inf->terminal_state != desired_state)
|
||
{
|
||
set_current_inferior (inf);
|
||
if (desired_state == target_terminal_state::is_ours)
|
||
target_stack->terminal_ours ();
|
||
else if (desired_state == target_terminal_state::is_ours_for_output)
|
||
target_stack->terminal_ours_for_output ();
|
||
else
|
||
gdb_assert_not_reached ("unhandled desired state");
|
||
inf->terminal_state = desired_state;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* See target/target.h. */
|
||
|
||
void
|
||
target_terminal::ours ()
|
||
{
|
||
struct ui *ui = current_ui;
|
||
|
||
/* See target_terminal::inferior. */
|
||
if (ui != main_ui)
|
||
return;
|
||
|
||
if (m_terminal_state == target_terminal_state::is_ours)
|
||
return;
|
||
|
||
target_terminal_is_ours_kind (target_terminal_state::is_ours);
|
||
m_terminal_state = target_terminal_state::is_ours;
|
||
}
|
||
|
||
/* See target/target.h. */
|
||
|
||
void
|
||
target_terminal::ours_for_output ()
|
||
{
|
||
struct ui *ui = current_ui;
|
||
|
||
/* See target_terminal::inferior. */
|
||
if (ui != main_ui)
|
||
return;
|
||
|
||
if (!target_terminal::is_inferior ())
|
||
return;
|
||
|
||
target_terminal_is_ours_kind (target_terminal_state::is_ours_for_output);
|
||
target_terminal::m_terminal_state = target_terminal_state::is_ours_for_output;
|
||
}
|
||
|
||
/* See target/target.h. */
|
||
|
||
void
|
||
target_terminal::info (const char *arg, int from_tty)
|
||
{
|
||
target_stack->terminal_info (arg, from_tty);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
int
|
||
target_supports_terminal_ours (void)
|
||
{
|
||
return target_stack->supports_terminal_ours ();
|
||
}
|
||
|
||
static void
|
||
tcomplain (void)
|
||
{
|
||
error (_("You can't do that when your target is `%s'"),
|
||
target_stack->shortname ());
|
||
}
|
||
|
||
void
|
||
noprocess (void)
|
||
{
|
||
error (_("You can't do that without a process to debug."));
|
||
}
|
||
|
||
static void
|
||
default_terminal_info (struct target_ops *self, const char *args, int from_tty)
|
||
{
|
||
printf_unfiltered (_("No saved terminal information.\n"));
|
||
}
|
||
|
||
/* A default implementation for the to_get_ada_task_ptid target method.
|
||
|
||
This function builds the PTID by using both LWP and TID as part of
|
||
the PTID lwp and tid elements. The pid used is the pid of the
|
||
inferior_ptid. */
|
||
|
||
static ptid_t
|
||
default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid)
|
||
{
|
||
return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid);
|
||
}
|
||
|
||
static enum exec_direction_kind
|
||
default_execution_direction (struct target_ops *self)
|
||
{
|
||
if (!target_can_execute_reverse)
|
||
return EXEC_FORWARD;
|
||
else if (!target_can_async_p ())
|
||
return EXEC_FORWARD;
|
||
else
|
||
gdb_assert_not_reached ("\
|
||
to_execution_direction must be implemented for reverse async");
|
||
}
|
||
|
||
/* Push a new target type into the stack of the existing target accessors,
|
||
possibly superseding some of the existing accessors.
|
||
|
||
Rather than allow an empty stack, we always have the dummy target at
|
||
the bottom stratum, so we can call the function vectors without
|
||
checking them. */
|
||
|
||
void
|
||
push_target (struct target_ops *t)
|
||
{
|
||
struct target_ops **cur;
|
||
|
||
/* Find the proper stratum to install this target in. */
|
||
for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
|
||
{
|
||
if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum)
|
||
break;
|
||
}
|
||
|
||
/* If there's already targets at this stratum, remove them. */
|
||
/* FIXME: cagney/2003-10-15: I think this should be popping all
|
||
targets to CUR, and not just those at this stratum level. */
|
||
while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum)
|
||
{
|
||
/* There's already something at this stratum level. Close it,
|
||
and un-hook it from the stack. */
|
||
struct target_ops *tmp = (*cur);
|
||
|
||
(*cur) = (*cur)->beneath;
|
||
tmp->beneath = NULL;
|
||
target_close (tmp);
|
||
}
|
||
|
||
/* We have removed all targets in our stratum, now add the new one. */
|
||
t->beneath = (*cur);
|
||
(*cur) = t;
|
||
}
|
||
|
||
/* Remove a target_ops vector from the stack, wherever it may be.
|
||
Return how many times it was removed (0 or 1). */
|
||
|
||
int
|
||
unpush_target (struct target_ops *t)
|
||
{
|
||
struct target_ops **cur;
|
||
struct target_ops *tmp;
|
||
|
||
if (t->to_stratum == dummy_stratum)
|
||
internal_error (__FILE__, __LINE__,
|
||
_("Attempt to unpush the dummy target"));
|
||
|
||
/* Look for the specified target. Note that we assume that a target
|
||
can only occur once in the target stack. */
|
||
|
||
for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath)
|
||
{
|
||
if ((*cur) == t)
|
||
break;
|
||
}
|
||
|
||
/* If we don't find target_ops, quit. Only open targets should be
|
||
closed. */
|
||
if ((*cur) == NULL)
|
||
return 0;
|
||
|
||
/* Unchain the target. */
|
||
tmp = (*cur);
|
||
(*cur) = (*cur)->beneath;
|
||
tmp->beneath = NULL;
|
||
|
||
/* Finally close the target. Note we do this after unchaining, so
|
||
any target method calls from within the target_close
|
||
implementation don't end up in T anymore. */
|
||
target_close (t);
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Unpush TARGET and assert that it worked. */
|
||
|
||
static void
|
||
unpush_target_and_assert (struct target_ops *target)
|
||
{
|
||
if (!unpush_target (target))
|
||
{
|
||
fprintf_unfiltered (gdb_stderr,
|
||
"pop_all_targets couldn't find target %s\n",
|
||
target->shortname ());
|
||
internal_error (__FILE__, __LINE__,
|
||
_("failed internal consistency check"));
|
||
}
|
||
}
|
||
|
||
void
|
||
pop_all_targets_above (enum strata above_stratum)
|
||
{
|
||
while ((int) (target_stack->to_stratum) > (int) above_stratum)
|
||
unpush_target_and_assert (target_stack);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
pop_all_targets_at_and_above (enum strata stratum)
|
||
{
|
||
while ((int) (target_stack->to_stratum) >= (int) stratum)
|
||
unpush_target_and_assert (target_stack);
|
||
}
|
||
|
||
void
|
||
pop_all_targets (void)
|
||
{
|
||
pop_all_targets_above (dummy_stratum);
|
||
}
|
||
|
||
/* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
|
||
|
||
int
|
||
target_is_pushed (struct target_ops *t)
|
||
{
|
||
struct target_ops *cur;
|
||
|
||
for (cur = target_stack; cur != NULL; cur = cur->beneath)
|
||
if (cur == t)
|
||
return 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Default implementation of to_get_thread_local_address. */
|
||
|
||
static void
|
||
generic_tls_error (void)
|
||
{
|
||
throw_error (TLS_GENERIC_ERROR,
|
||
_("Cannot find thread-local variables on this target"));
|
||
}
|
||
|
||
/* Using the objfile specified in OBJFILE, find the address for the
|
||
current thread's thread-local storage with offset OFFSET. */
|
||
CORE_ADDR
|
||
target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset)
|
||
{
|
||
volatile CORE_ADDR addr = 0;
|
||
struct target_ops *target = target_stack;
|
||
|
||
if (gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
|
||
{
|
||
ptid_t ptid = inferior_ptid;
|
||
|
||
TRY
|
||
{
|
||
CORE_ADDR lm_addr;
|
||
|
||
/* Fetch the load module address for this objfile. */
|
||
lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (),
|
||
objfile);
|
||
|
||
addr = target->get_thread_local_address (ptid, lm_addr, offset);
|
||
}
|
||
/* If an error occurred, print TLS related messages here. Otherwise,
|
||
throw the error to some higher catcher. */
|
||
CATCH (ex, RETURN_MASK_ALL)
|
||
{
|
||
int objfile_is_library = (objfile->flags & OBJF_SHARED);
|
||
|
||
switch (ex.error)
|
||
{
|
||
case TLS_NO_LIBRARY_SUPPORT_ERROR:
|
||
error (_("Cannot find thread-local variables "
|
||
"in this thread library."));
|
||
break;
|
||
case TLS_LOAD_MODULE_NOT_FOUND_ERROR:
|
||
if (objfile_is_library)
|
||
error (_("Cannot find shared library `%s' in dynamic"
|
||
" linker's load module list"), objfile_name (objfile));
|
||
else
|
||
error (_("Cannot find executable file `%s' in dynamic"
|
||
" linker's load module list"), objfile_name (objfile));
|
||
break;
|
||
case TLS_NOT_ALLOCATED_YET_ERROR:
|
||
if (objfile_is_library)
|
||
error (_("The inferior has not yet allocated storage for"
|
||
" thread-local variables in\n"
|
||
"the shared library `%s'\n"
|
||
"for %s"),
|
||
objfile_name (objfile), target_pid_to_str (ptid));
|
||
else
|
||
error (_("The inferior has not yet allocated storage for"
|
||
" thread-local variables in\n"
|
||
"the executable `%s'\n"
|
||
"for %s"),
|
||
objfile_name (objfile), target_pid_to_str (ptid));
|
||
break;
|
||
case TLS_GENERIC_ERROR:
|
||
if (objfile_is_library)
|
||
error (_("Cannot find thread-local storage for %s, "
|
||
"shared library %s:\n%s"),
|
||
target_pid_to_str (ptid),
|
||
objfile_name (objfile), ex.message);
|
||
else
|
||
error (_("Cannot find thread-local storage for %s, "
|
||
"executable file %s:\n%s"),
|
||
target_pid_to_str (ptid),
|
||
objfile_name (objfile), ex.message);
|
||
break;
|
||
default:
|
||
throw_exception (ex);
|
||
break;
|
||
}
|
||
}
|
||
END_CATCH
|
||
}
|
||
/* It wouldn't be wrong here to try a gdbarch method, too; finding
|
||
TLS is an ABI-specific thing. But we don't do that yet. */
|
||
else
|
||
error (_("Cannot find thread-local variables on this target"));
|
||
|
||
return addr;
|
||
}
|
||
|
||
const char *
|
||
target_xfer_status_to_string (enum target_xfer_status status)
|
||
{
|
||
#define CASE(X) case X: return #X
|
||
switch (status)
|
||
{
|
||
CASE(TARGET_XFER_E_IO);
|
||
CASE(TARGET_XFER_UNAVAILABLE);
|
||
default:
|
||
return "<unknown>";
|
||
}
|
||
#undef CASE
|
||
};
|
||
|
||
|
||
#undef MIN
|
||
#define MIN(A, B) (((A) <= (B)) ? (A) : (B))
|
||
|
||
/* target_read_string -- read a null terminated string, up to LEN bytes,
|
||
from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
|
||
Set *STRING to a pointer to malloc'd memory containing the data; the caller
|
||
is responsible for freeing it. Return the number of bytes successfully
|
||
read. */
|
||
|
||
int
|
||
target_read_string (CORE_ADDR memaddr, gdb::unique_xmalloc_ptr<char> *string,
|
||
int len, int *errnop)
|
||
{
|
||
int tlen, offset, i;
|
||
gdb_byte buf[4];
|
||
int errcode = 0;
|
||
char *buffer;
|
||
int buffer_allocated;
|
||
char *bufptr;
|
||
unsigned int nbytes_read = 0;
|
||
|
||
gdb_assert (string);
|
||
|
||
/* Small for testing. */
|
||
buffer_allocated = 4;
|
||
buffer = (char *) xmalloc (buffer_allocated);
|
||
bufptr = buffer;
|
||
|
||
while (len > 0)
|
||
{
|
||
tlen = MIN (len, 4 - (memaddr & 3));
|
||
offset = memaddr & 3;
|
||
|
||
errcode = target_read_memory (memaddr & ~3, buf, sizeof buf);
|
||
if (errcode != 0)
|
||
{
|
||
/* The transfer request might have crossed the boundary to an
|
||
unallocated region of memory. Retry the transfer, requesting
|
||
a single byte. */
|
||
tlen = 1;
|
||
offset = 0;
|
||
errcode = target_read_memory (memaddr, buf, 1);
|
||
if (errcode != 0)
|
||
goto done;
|
||
}
|
||
|
||
if (bufptr - buffer + tlen > buffer_allocated)
|
||
{
|
||
unsigned int bytes;
|
||
|
||
bytes = bufptr - buffer;
|
||
buffer_allocated *= 2;
|
||
buffer = (char *) xrealloc (buffer, buffer_allocated);
|
||
bufptr = buffer + bytes;
|
||
}
|
||
|
||
for (i = 0; i < tlen; i++)
|
||
{
|
||
*bufptr++ = buf[i + offset];
|
||
if (buf[i + offset] == '\000')
|
||
{
|
||
nbytes_read += i + 1;
|
||
goto done;
|
||
}
|
||
}
|
||
|
||
memaddr += tlen;
|
||
len -= tlen;
|
||
nbytes_read += tlen;
|
||
}
|
||
done:
|
||
string->reset (buffer);
|
||
if (errnop != NULL)
|
||
*errnop = errcode;
|
||
return nbytes_read;
|
||
}
|
||
|
||
struct target_section_table *
|
||
target_get_section_table (struct target_ops *target)
|
||
{
|
||
return target->get_section_table ();
|
||
}
|
||
|
||
/* Find a section containing ADDR. */
|
||
|
||
struct target_section *
|
||
target_section_by_addr (struct target_ops *target, CORE_ADDR addr)
|
||
{
|
||
struct target_section_table *table = target_get_section_table (target);
|
||
struct target_section *secp;
|
||
|
||
if (table == NULL)
|
||
return NULL;
|
||
|
||
for (secp = table->sections; secp < table->sections_end; secp++)
|
||
{
|
||
if (addr >= secp->addr && addr < secp->endaddr)
|
||
return secp;
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
|
||
/* Helper for the memory xfer routines. Checks the attributes of the
|
||
memory region of MEMADDR against the read or write being attempted.
|
||
If the access is permitted returns true, otherwise returns false.
|
||
REGION_P is an optional output parameter. If not-NULL, it is
|
||
filled with a pointer to the memory region of MEMADDR. REG_LEN
|
||
returns LEN trimmed to the end of the region. This is how much the
|
||
caller can continue requesting, if the access is permitted. A
|
||
single xfer request must not straddle memory region boundaries. */
|
||
|
||
static int
|
||
memory_xfer_check_region (gdb_byte *readbuf, const gdb_byte *writebuf,
|
||
ULONGEST memaddr, ULONGEST len, ULONGEST *reg_len,
|
||
struct mem_region **region_p)
|
||
{
|
||
struct mem_region *region;
|
||
|
||
region = lookup_mem_region (memaddr);
|
||
|
||
if (region_p != NULL)
|
||
*region_p = region;
|
||
|
||
switch (region->attrib.mode)
|
||
{
|
||
case MEM_RO:
|
||
if (writebuf != NULL)
|
||
return 0;
|
||
break;
|
||
|
||
case MEM_WO:
|
||
if (readbuf != NULL)
|
||
return 0;
|
||
break;
|
||
|
||
case MEM_FLASH:
|
||
/* We only support writing to flash during "load" for now. */
|
||
if (writebuf != NULL)
|
||
error (_("Writing to flash memory forbidden in this context"));
|
||
break;
|
||
|
||
case MEM_NONE:
|
||
return 0;
|
||
}
|
||
|
||
/* region->hi == 0 means there's no upper bound. */
|
||
if (memaddr + len < region->hi || region->hi == 0)
|
||
*reg_len = len;
|
||
else
|
||
*reg_len = region->hi - memaddr;
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Read memory from more than one valid target. A core file, for
|
||
instance, could have some of memory but delegate other bits to
|
||
the target below it. So, we must manually try all targets. */
|
||
|
||
enum target_xfer_status
|
||
raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf,
|
||
const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len,
|
||
ULONGEST *xfered_len)
|
||
{
|
||
enum target_xfer_status res;
|
||
|
||
do
|
||
{
|
||
res = ops->xfer_partial (TARGET_OBJECT_MEMORY, NULL,
|
||
readbuf, writebuf, memaddr, len,
|
||
xfered_len);
|
||
if (res == TARGET_XFER_OK)
|
||
break;
|
||
|
||
/* Stop if the target reports that the memory is not available. */
|
||
if (res == TARGET_XFER_UNAVAILABLE)
|
||
break;
|
||
|
||
/* We want to continue past core files to executables, but not
|
||
past a running target's memory. */
|
||
if (ops->has_all_memory ())
|
||
break;
|
||
|
||
ops = ops->beneath;
|
||
}
|
||
while (ops != NULL);
|
||
|
||
/* The cache works at the raw memory level. Make sure the cache
|
||
gets updated with raw contents no matter what kind of memory
|
||
object was originally being written. Note we do write-through
|
||
first, so that if it fails, we don't write to the cache contents
|
||
that never made it to the target. */
|
||
if (writebuf != NULL
|
||
&& !ptid_equal (inferior_ptid, null_ptid)
|
||
&& target_dcache_init_p ()
|
||
&& (stack_cache_enabled_p () || code_cache_enabled_p ()))
|
||
{
|
||
DCACHE *dcache = target_dcache_get ();
|
||
|
||
/* Note that writing to an area of memory which wasn't present
|
||
in the cache doesn't cause it to be loaded in. */
|
||
dcache_update (dcache, res, memaddr, writebuf, *xfered_len);
|
||
}
|
||
|
||
return res;
|
||
}
|
||
|
||
/* Perform a partial memory transfer.
|
||
For docs see target.h, to_xfer_partial. */
|
||
|
||
static enum target_xfer_status
|
||
memory_xfer_partial_1 (struct target_ops *ops, enum target_object object,
|
||
gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr,
|
||
ULONGEST len, ULONGEST *xfered_len)
|
||
{
|
||
enum target_xfer_status res;
|
||
ULONGEST reg_len;
|
||
struct mem_region *region;
|
||
struct inferior *inf;
|
||
|
||
/* For accesses to unmapped overlay sections, read directly from
|
||
files. Must do this first, as MEMADDR may need adjustment. */
|
||
if (readbuf != NULL && overlay_debugging)
|
||
{
|
||
struct obj_section *section = find_pc_overlay (memaddr);
|
||
|
||
if (pc_in_unmapped_range (memaddr, section))
|
||
{
|
||
struct target_section_table *table
|
||
= target_get_section_table (ops);
|
||
const char *section_name = section->the_bfd_section->name;
|
||
|
||
memaddr = overlay_mapped_address (memaddr, section);
|
||
return section_table_xfer_memory_partial (readbuf, writebuf,
|
||
memaddr, len, xfered_len,
|
||
table->sections,
|
||
table->sections_end,
|
||
section_name);
|
||
}
|
||
}
|
||
|
||
/* Try the executable files, if "trust-readonly-sections" is set. */
|
||
if (readbuf != NULL && trust_readonly)
|
||
{
|
||
struct target_section *secp;
|
||
struct target_section_table *table;
|
||
|
||
secp = target_section_by_addr (ops, memaddr);
|
||
if (secp != NULL
|
||
&& (bfd_get_section_flags (secp->the_bfd_section->owner,
|
||
secp->the_bfd_section)
|
||
& SEC_READONLY))
|
||
{
|
||
table = target_get_section_table (ops);
|
||
return section_table_xfer_memory_partial (readbuf, writebuf,
|
||
memaddr, len, xfered_len,
|
||
table->sections,
|
||
table->sections_end,
|
||
NULL);
|
||
}
|
||
}
|
||
|
||
/* Try GDB's internal data cache. */
|
||
|
||
if (!memory_xfer_check_region (readbuf, writebuf, memaddr, len, ®_len,
|
||
®ion))
|
||
return TARGET_XFER_E_IO;
|
||
|
||
if (!ptid_equal (inferior_ptid, null_ptid))
|
||
inf = find_inferior_ptid (inferior_ptid);
|
||
else
|
||
inf = NULL;
|
||
|
||
if (inf != NULL
|
||
&& readbuf != NULL
|
||
/* The dcache reads whole cache lines; that doesn't play well
|
||
with reading from a trace buffer, because reading outside of
|
||
the collected memory range fails. */
|
||
&& get_traceframe_number () == -1
|
||
&& (region->attrib.cache
|
||
|| (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY)
|
||
|| (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY)))
|
||
{
|
||
DCACHE *dcache = target_dcache_get_or_init ();
|
||
|
||
return dcache_read_memory_partial (ops, dcache, memaddr, readbuf,
|
||
reg_len, xfered_len);
|
||
}
|
||
|
||
/* If none of those methods found the memory we wanted, fall back
|
||
to a target partial transfer. Normally a single call to
|
||
to_xfer_partial is enough; if it doesn't recognize an object
|
||
it will call the to_xfer_partial of the next target down.
|
||
But for memory this won't do. Memory is the only target
|
||
object which can be read from more than one valid target.
|
||
A core file, for instance, could have some of memory but
|
||
delegate other bits to the target below it. So, we must
|
||
manually try all targets. */
|
||
|
||
res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len,
|
||
xfered_len);
|
||
|
||
/* If we still haven't got anything, return the last error. We
|
||
give up. */
|
||
return res;
|
||
}
|
||
|
||
/* Perform a partial memory transfer. For docs see target.h,
|
||
to_xfer_partial. */
|
||
|
||
static enum target_xfer_status
|
||
memory_xfer_partial (struct target_ops *ops, enum target_object object,
|
||
gdb_byte *readbuf, const gdb_byte *writebuf,
|
||
ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len)
|
||
{
|
||
enum target_xfer_status res;
|
||
|
||
/* Zero length requests are ok and require no work. */
|
||
if (len == 0)
|
||
return TARGET_XFER_EOF;
|
||
|
||
memaddr = address_significant (target_gdbarch (), memaddr);
|
||
|
||
/* Fill in READBUF with breakpoint shadows, or WRITEBUF with
|
||
breakpoint insns, thus hiding out from higher layers whether
|
||
there are software breakpoints inserted in the code stream. */
|
||
if (readbuf != NULL)
|
||
{
|
||
res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len,
|
||
xfered_len);
|
||
|
||
if (res == TARGET_XFER_OK && !show_memory_breakpoints)
|
||
breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, *xfered_len);
|
||
}
|
||
else
|
||
{
|
||
/* A large write request is likely to be partially satisfied
|
||
by memory_xfer_partial_1. We will continually malloc
|
||
and free a copy of the entire write request for breakpoint
|
||
shadow handling even though we only end up writing a small
|
||
subset of it. Cap writes to a limit specified by the target
|
||
to mitigate this. */
|
||
len = std::min (ops->get_memory_xfer_limit (), len);
|
||
|
||
gdb::byte_vector buf (writebuf, writebuf + len);
|
||
breakpoint_xfer_memory (NULL, buf.data (), writebuf, memaddr, len);
|
||
res = memory_xfer_partial_1 (ops, object, NULL, buf.data (), memaddr, len,
|
||
xfered_len);
|
||
}
|
||
|
||
return res;
|
||
}
|
||
|
||
scoped_restore_tmpl<int>
|
||
make_scoped_restore_show_memory_breakpoints (int show)
|
||
{
|
||
return make_scoped_restore (&show_memory_breakpoints, show);
|
||
}
|
||
|
||
/* For docs see target.h, to_xfer_partial. */
|
||
|
||
enum target_xfer_status
|
||
target_xfer_partial (struct target_ops *ops,
|
||
enum target_object object, const char *annex,
|
||
gdb_byte *readbuf, const gdb_byte *writebuf,
|
||
ULONGEST offset, ULONGEST len,
|
||
ULONGEST *xfered_len)
|
||
{
|
||
enum target_xfer_status retval;
|
||
|
||
/* Transfer is done when LEN is zero. */
|
||
if (len == 0)
|
||
return TARGET_XFER_EOF;
|
||
|
||
if (writebuf && !may_write_memory)
|
||
error (_("Writing to memory is not allowed (addr %s, len %s)"),
|
||
core_addr_to_string_nz (offset), plongest (len));
|
||
|
||
*xfered_len = 0;
|
||
|
||
/* If this is a memory transfer, let the memory-specific code
|
||
have a look at it instead. Memory transfers are more
|
||
complicated. */
|
||
if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY
|
||
|| object == TARGET_OBJECT_CODE_MEMORY)
|
||
retval = memory_xfer_partial (ops, object, readbuf,
|
||
writebuf, offset, len, xfered_len);
|
||
else if (object == TARGET_OBJECT_RAW_MEMORY)
|
||
{
|
||
/* Skip/avoid accessing the target if the memory region
|
||
attributes block the access. Check this here instead of in
|
||
raw_memory_xfer_partial as otherwise we'd end up checking
|
||
this twice in the case of the memory_xfer_partial path is
|
||
taken; once before checking the dcache, and another in the
|
||
tail call to raw_memory_xfer_partial. */
|
||
if (!memory_xfer_check_region (readbuf, writebuf, offset, len, &len,
|
||
NULL))
|
||
return TARGET_XFER_E_IO;
|
||
|
||
/* Request the normal memory object from other layers. */
|
||
retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len,
|
||
xfered_len);
|
||
}
|
||
else
|
||
retval = ops->xfer_partial (object, annex, readbuf,
|
||
writebuf, offset, len, xfered_len);
|
||
|
||
if (targetdebug)
|
||
{
|
||
const unsigned char *myaddr = NULL;
|
||
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"%s:target_xfer_partial "
|
||
"(%d, %s, %s, %s, %s, %s) = %d, %s",
|
||
ops->shortname (),
|
||
(int) object,
|
||
(annex ? annex : "(null)"),
|
||
host_address_to_string (readbuf),
|
||
host_address_to_string (writebuf),
|
||
core_addr_to_string_nz (offset),
|
||
pulongest (len), retval,
|
||
pulongest (*xfered_len));
|
||
|
||
if (readbuf)
|
||
myaddr = readbuf;
|
||
if (writebuf)
|
||
myaddr = writebuf;
|
||
if (retval == TARGET_XFER_OK && myaddr != NULL)
|
||
{
|
||
int i;
|
||
|
||
fputs_unfiltered (", bytes =", gdb_stdlog);
|
||
for (i = 0; i < *xfered_len; i++)
|
||
{
|
||
if ((((intptr_t) &(myaddr[i])) & 0xf) == 0)
|
||
{
|
||
if (targetdebug < 2 && i > 0)
|
||
{
|
||
fprintf_unfiltered (gdb_stdlog, " ...");
|
||
break;
|
||
}
|
||
fprintf_unfiltered (gdb_stdlog, "\n");
|
||
}
|
||
|
||
fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff);
|
||
}
|
||
}
|
||
|
||
fputc_unfiltered ('\n', gdb_stdlog);
|
||
}
|
||
|
||
/* Check implementations of to_xfer_partial update *XFERED_LEN
|
||
properly. Do assertion after printing debug messages, so that we
|
||
can find more clues on assertion failure from debugging messages. */
|
||
if (retval == TARGET_XFER_OK || retval == TARGET_XFER_UNAVAILABLE)
|
||
gdb_assert (*xfered_len > 0);
|
||
|
||
return retval;
|
||
}
|
||
|
||
/* Read LEN bytes of target memory at address MEMADDR, placing the
|
||
results in GDB's memory at MYADDR. Returns either 0 for success or
|
||
-1 if any error occurs.
|
||
|
||
If an error occurs, no guarantee is made about the contents of the data at
|
||
MYADDR. In particular, the caller should not depend upon partial reads
|
||
filling the buffer with good data. There is no way for the caller to know
|
||
how much good data might have been transfered anyway. Callers that can
|
||
deal with partial reads should call target_read (which will retry until
|
||
it makes no progress, and then return how much was transferred). */
|
||
|
||
int
|
||
target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
|
||
{
|
||
if (target_read (target_stack, TARGET_OBJECT_MEMORY, NULL,
|
||
myaddr, memaddr, len) == len)
|
||
return 0;
|
||
else
|
||
return -1;
|
||
}
|
||
|
||
/* See target/target.h. */
|
||
|
||
int
|
||
target_read_uint32 (CORE_ADDR memaddr, uint32_t *result)
|
||
{
|
||
gdb_byte buf[4];
|
||
int r;
|
||
|
||
r = target_read_memory (memaddr, buf, sizeof buf);
|
||
if (r != 0)
|
||
return r;
|
||
*result = extract_unsigned_integer (buf, sizeof buf,
|
||
gdbarch_byte_order (target_gdbarch ()));
|
||
return 0;
|
||
}
|
||
|
||
/* Like target_read_memory, but specify explicitly that this is a read
|
||
from the target's raw memory. That is, this read bypasses the
|
||
dcache, breakpoint shadowing, etc. */
|
||
|
||
int
|
||
target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
|
||
{
|
||
if (target_read (target_stack, TARGET_OBJECT_RAW_MEMORY, NULL,
|
||
myaddr, memaddr, len) == len)
|
||
return 0;
|
||
else
|
||
return -1;
|
||
}
|
||
|
||
/* Like target_read_memory, but specify explicitly that this is a read from
|
||
the target's stack. This may trigger different cache behavior. */
|
||
|
||
int
|
||
target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
|
||
{
|
||
if (target_read (target_stack, TARGET_OBJECT_STACK_MEMORY, NULL,
|
||
myaddr, memaddr, len) == len)
|
||
return 0;
|
||
else
|
||
return -1;
|
||
}
|
||
|
||
/* Like target_read_memory, but specify explicitly that this is a read from
|
||
the target's code. This may trigger different cache behavior. */
|
||
|
||
int
|
||
target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
|
||
{
|
||
if (target_read (target_stack, TARGET_OBJECT_CODE_MEMORY, NULL,
|
||
myaddr, memaddr, len) == len)
|
||
return 0;
|
||
else
|
||
return -1;
|
||
}
|
||
|
||
/* Write LEN bytes from MYADDR to target memory at address MEMADDR.
|
||
Returns either 0 for success or -1 if any error occurs. If an
|
||
error occurs, no guarantee is made about how much data got written.
|
||
Callers that can deal with partial writes should call
|
||
target_write. */
|
||
|
||
int
|
||
target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
|
||
{
|
||
if (target_write (target_stack, TARGET_OBJECT_MEMORY, NULL,
|
||
myaddr, memaddr, len) == len)
|
||
return 0;
|
||
else
|
||
return -1;
|
||
}
|
||
|
||
/* Write LEN bytes from MYADDR to target raw memory at address
|
||
MEMADDR. Returns either 0 for success or -1 if any error occurs.
|
||
If an error occurs, no guarantee is made about how much data got
|
||
written. Callers that can deal with partial writes should call
|
||
target_write. */
|
||
|
||
int
|
||
target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
|
||
{
|
||
if (target_write (target_stack, TARGET_OBJECT_RAW_MEMORY, NULL,
|
||
myaddr, memaddr, len) == len)
|
||
return 0;
|
||
else
|
||
return -1;
|
||
}
|
||
|
||
/* Fetch the target's memory map. */
|
||
|
||
std::vector<mem_region>
|
||
target_memory_map (void)
|
||
{
|
||
std::vector<mem_region> result = target_stack->memory_map ();
|
||
if (result.empty ())
|
||
return result;
|
||
|
||
std::sort (result.begin (), result.end ());
|
||
|
||
/* Check that regions do not overlap. Simultaneously assign
|
||
a numbering for the "mem" commands to use to refer to
|
||
each region. */
|
||
mem_region *last_one = NULL;
|
||
for (size_t ix = 0; ix < result.size (); ix++)
|
||
{
|
||
mem_region *this_one = &result[ix];
|
||
this_one->number = ix;
|
||
|
||
if (last_one != NULL && last_one->hi > this_one->lo)
|
||
{
|
||
warning (_("Overlapping regions in memory map: ignoring"));
|
||
return std::vector<mem_region> ();
|
||
}
|
||
|
||
last_one = this_one;
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
void
|
||
target_flash_erase (ULONGEST address, LONGEST length)
|
||
{
|
||
target_stack->flash_erase (address, length);
|
||
}
|
||
|
||
void
|
||
target_flash_done (void)
|
||
{
|
||
target_stack->flash_done ();
|
||
}
|
||
|
||
static void
|
||
show_trust_readonly (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file,
|
||
_("Mode for reading from readonly sections is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
/* Target vector read/write partial wrapper functions. */
|
||
|
||
static enum target_xfer_status
|
||
target_read_partial (struct target_ops *ops,
|
||
enum target_object object,
|
||
const char *annex, gdb_byte *buf,
|
||
ULONGEST offset, ULONGEST len,
|
||
ULONGEST *xfered_len)
|
||
{
|
||
return target_xfer_partial (ops, object, annex, buf, NULL, offset, len,
|
||
xfered_len);
|
||
}
|
||
|
||
static enum target_xfer_status
|
||
target_write_partial (struct target_ops *ops,
|
||
enum target_object object,
|
||
const char *annex, const gdb_byte *buf,
|
||
ULONGEST offset, LONGEST len, ULONGEST *xfered_len)
|
||
{
|
||
return target_xfer_partial (ops, object, annex, NULL, buf, offset, len,
|
||
xfered_len);
|
||
}
|
||
|
||
/* Wrappers to perform the full transfer. */
|
||
|
||
/* For docs on target_read see target.h. */
|
||
|
||
LONGEST
|
||
target_read (struct target_ops *ops,
|
||
enum target_object object,
|
||
const char *annex, gdb_byte *buf,
|
||
ULONGEST offset, LONGEST len)
|
||
{
|
||
LONGEST xfered_total = 0;
|
||
int unit_size = 1;
|
||
|
||
/* If we are reading from a memory object, find the length of an addressable
|
||
unit for that architecture. */
|
||
if (object == TARGET_OBJECT_MEMORY
|
||
|| object == TARGET_OBJECT_STACK_MEMORY
|
||
|| object == TARGET_OBJECT_CODE_MEMORY
|
||
|| object == TARGET_OBJECT_RAW_MEMORY)
|
||
unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ());
|
||
|
||
while (xfered_total < len)
|
||
{
|
||
ULONGEST xfered_partial;
|
||
enum target_xfer_status status;
|
||
|
||
status = target_read_partial (ops, object, annex,
|
||
buf + xfered_total * unit_size,
|
||
offset + xfered_total, len - xfered_total,
|
||
&xfered_partial);
|
||
|
||
/* Call an observer, notifying them of the xfer progress? */
|
||
if (status == TARGET_XFER_EOF)
|
||
return xfered_total;
|
||
else if (status == TARGET_XFER_OK)
|
||
{
|
||
xfered_total += xfered_partial;
|
||
QUIT;
|
||
}
|
||
else
|
||
return TARGET_XFER_E_IO;
|
||
|
||
}
|
||
return len;
|
||
}
|
||
|
||
/* Assuming that the entire [begin, end) range of memory cannot be
|
||
read, try to read whatever subrange is possible to read.
|
||
|
||
The function returns, in RESULT, either zero or one memory block.
|
||
If there's a readable subrange at the beginning, it is completely
|
||
read and returned. Any further readable subrange will not be read.
|
||
Otherwise, if there's a readable subrange at the end, it will be
|
||
completely read and returned. Any readable subranges before it
|
||
(obviously, not starting at the beginning), will be ignored. In
|
||
other cases -- either no readable subrange, or readable subrange(s)
|
||
that is neither at the beginning, or end, nothing is returned.
|
||
|
||
The purpose of this function is to handle a read across a boundary
|
||
of accessible memory in a case when memory map is not available.
|
||
The above restrictions are fine for this case, but will give
|
||
incorrect results if the memory is 'patchy'. However, supporting
|
||
'patchy' memory would require trying to read every single byte,
|
||
and it seems unacceptable solution. Explicit memory map is
|
||
recommended for this case -- and target_read_memory_robust will
|
||
take care of reading multiple ranges then. */
|
||
|
||
static void
|
||
read_whatever_is_readable (struct target_ops *ops,
|
||
const ULONGEST begin, const ULONGEST end,
|
||
int unit_size,
|
||
std::vector<memory_read_result> *result)
|
||
{
|
||
ULONGEST current_begin = begin;
|
||
ULONGEST current_end = end;
|
||
int forward;
|
||
ULONGEST xfered_len;
|
||
|
||
/* If we previously failed to read 1 byte, nothing can be done here. */
|
||
if (end - begin <= 1)
|
||
return;
|
||
|
||
gdb::unique_xmalloc_ptr<gdb_byte> buf ((gdb_byte *) xmalloc (end - begin));
|
||
|
||
/* Check that either first or the last byte is readable, and give up
|
||
if not. This heuristic is meant to permit reading accessible memory
|
||
at the boundary of accessible region. */
|
||
if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
|
||
buf.get (), begin, 1, &xfered_len) == TARGET_XFER_OK)
|
||
{
|
||
forward = 1;
|
||
++current_begin;
|
||
}
|
||
else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL,
|
||
buf.get () + (end - begin) - 1, end - 1, 1,
|
||
&xfered_len) == TARGET_XFER_OK)
|
||
{
|
||
forward = 0;
|
||
--current_end;
|
||
}
|
||
else
|
||
return;
|
||
|
||
/* Loop invariant is that the [current_begin, current_end) was previously
|
||
found to be not readable as a whole.
|
||
|
||
Note loop condition -- if the range has 1 byte, we can't divide the range
|
||
so there's no point trying further. */
|
||
while (current_end - current_begin > 1)
|
||
{
|
||
ULONGEST first_half_begin, first_half_end;
|
||
ULONGEST second_half_begin, second_half_end;
|
||
LONGEST xfer;
|
||
ULONGEST middle = current_begin + (current_end - current_begin) / 2;
|
||
|
||
if (forward)
|
||
{
|
||
first_half_begin = current_begin;
|
||
first_half_end = middle;
|
||
second_half_begin = middle;
|
||
second_half_end = current_end;
|
||
}
|
||
else
|
||
{
|
||
first_half_begin = middle;
|
||
first_half_end = current_end;
|
||
second_half_begin = current_begin;
|
||
second_half_end = middle;
|
||
}
|
||
|
||
xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL,
|
||
buf.get () + (first_half_begin - begin) * unit_size,
|
||
first_half_begin,
|
||
first_half_end - first_half_begin);
|
||
|
||
if (xfer == first_half_end - first_half_begin)
|
||
{
|
||
/* This half reads up fine. So, the error must be in the
|
||
other half. */
|
||
current_begin = second_half_begin;
|
||
current_end = second_half_end;
|
||
}
|
||
else
|
||
{
|
||
/* This half is not readable. Because we've tried one byte, we
|
||
know some part of this half if actually readable. Go to the next
|
||
iteration to divide again and try to read.
|
||
|
||
We don't handle the other half, because this function only tries
|
||
to read a single readable subrange. */
|
||
current_begin = first_half_begin;
|
||
current_end = first_half_end;
|
||
}
|
||
}
|
||
|
||
if (forward)
|
||
{
|
||
/* The [begin, current_begin) range has been read. */
|
||
result->emplace_back (begin, current_end, std::move (buf));
|
||
}
|
||
else
|
||
{
|
||
/* The [current_end, end) range has been read. */
|
||
LONGEST region_len = end - current_end;
|
||
|
||
gdb::unique_xmalloc_ptr<gdb_byte> data
|
||
((gdb_byte *) xmalloc (region_len * unit_size));
|
||
memcpy (data.get (), buf.get () + (current_end - begin) * unit_size,
|
||
region_len * unit_size);
|
||
result->emplace_back (current_end, end, std::move (data));
|
||
}
|
||
}
|
||
|
||
std::vector<memory_read_result>
|
||
read_memory_robust (struct target_ops *ops,
|
||
const ULONGEST offset, const LONGEST len)
|
||
{
|
||
std::vector<memory_read_result> result;
|
||
int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ());
|
||
|
||
LONGEST xfered_total = 0;
|
||
while (xfered_total < len)
|
||
{
|
||
struct mem_region *region = lookup_mem_region (offset + xfered_total);
|
||
LONGEST region_len;
|
||
|
||
/* If there is no explicit region, a fake one should be created. */
|
||
gdb_assert (region);
|
||
|
||
if (region->hi == 0)
|
||
region_len = len - xfered_total;
|
||
else
|
||
region_len = region->hi - offset;
|
||
|
||
if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO)
|
||
{
|
||
/* Cannot read this region. Note that we can end up here only
|
||
if the region is explicitly marked inaccessible, or
|
||
'inaccessible-by-default' is in effect. */
|
||
xfered_total += region_len;
|
||
}
|
||
else
|
||
{
|
||
LONGEST to_read = std::min (len - xfered_total, region_len);
|
||
gdb::unique_xmalloc_ptr<gdb_byte> buffer
|
||
((gdb_byte *) xmalloc (to_read * unit_size));
|
||
|
||
LONGEST xfered_partial =
|
||
target_read (ops, TARGET_OBJECT_MEMORY, NULL, buffer.get (),
|
||
offset + xfered_total, to_read);
|
||
/* Call an observer, notifying them of the xfer progress? */
|
||
if (xfered_partial <= 0)
|
||
{
|
||
/* Got an error reading full chunk. See if maybe we can read
|
||
some subrange. */
|
||
read_whatever_is_readable (ops, offset + xfered_total,
|
||
offset + xfered_total + to_read,
|
||
unit_size, &result);
|
||
xfered_total += to_read;
|
||
}
|
||
else
|
||
{
|
||
result.emplace_back (offset + xfered_total,
|
||
offset + xfered_total + xfered_partial,
|
||
std::move (buffer));
|
||
xfered_total += xfered_partial;
|
||
}
|
||
QUIT;
|
||
}
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
|
||
/* An alternative to target_write with progress callbacks. */
|
||
|
||
LONGEST
|
||
target_write_with_progress (struct target_ops *ops,
|
||
enum target_object object,
|
||
const char *annex, const gdb_byte *buf,
|
||
ULONGEST offset, LONGEST len,
|
||
void (*progress) (ULONGEST, void *), void *baton)
|
||
{
|
||
LONGEST xfered_total = 0;
|
||
int unit_size = 1;
|
||
|
||
/* If we are writing to a memory object, find the length of an addressable
|
||
unit for that architecture. */
|
||
if (object == TARGET_OBJECT_MEMORY
|
||
|| object == TARGET_OBJECT_STACK_MEMORY
|
||
|| object == TARGET_OBJECT_CODE_MEMORY
|
||
|| object == TARGET_OBJECT_RAW_MEMORY)
|
||
unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ());
|
||
|
||
/* Give the progress callback a chance to set up. */
|
||
if (progress)
|
||
(*progress) (0, baton);
|
||
|
||
while (xfered_total < len)
|
||
{
|
||
ULONGEST xfered_partial;
|
||
enum target_xfer_status status;
|
||
|
||
status = target_write_partial (ops, object, annex,
|
||
buf + xfered_total * unit_size,
|
||
offset + xfered_total, len - xfered_total,
|
||
&xfered_partial);
|
||
|
||
if (status != TARGET_XFER_OK)
|
||
return status == TARGET_XFER_EOF ? xfered_total : TARGET_XFER_E_IO;
|
||
|
||
if (progress)
|
||
(*progress) (xfered_partial, baton);
|
||
|
||
xfered_total += xfered_partial;
|
||
QUIT;
|
||
}
|
||
return len;
|
||
}
|
||
|
||
/* For docs on target_write see target.h. */
|
||
|
||
LONGEST
|
||
target_write (struct target_ops *ops,
|
||
enum target_object object,
|
||
const char *annex, const gdb_byte *buf,
|
||
ULONGEST offset, LONGEST len)
|
||
{
|
||
return target_write_with_progress (ops, object, annex, buf, offset, len,
|
||
NULL, NULL);
|
||
}
|
||
|
||
/* Help for target_read_alloc and target_read_stralloc. See their comments
|
||
for details. */
|
||
|
||
template <typename T>
|
||
gdb::optional<gdb::def_vector<T>>
|
||
target_read_alloc_1 (struct target_ops *ops, enum target_object object,
|
||
const char *annex)
|
||
{
|
||
gdb::def_vector<T> buf;
|
||
size_t buf_pos = 0;
|
||
const int chunk = 4096;
|
||
|
||
/* This function does not have a length parameter; it reads the
|
||
entire OBJECT). Also, it doesn't support objects fetched partly
|
||
from one target and partly from another (in a different stratum,
|
||
e.g. a core file and an executable). Both reasons make it
|
||
unsuitable for reading memory. */
|
||
gdb_assert (object != TARGET_OBJECT_MEMORY);
|
||
|
||
/* Start by reading up to 4K at a time. The target will throttle
|
||
this number down if necessary. */
|
||
while (1)
|
||
{
|
||
ULONGEST xfered_len;
|
||
enum target_xfer_status status;
|
||
|
||
buf.resize (buf_pos + chunk);
|
||
|
||
status = target_read_partial (ops, object, annex,
|
||
(gdb_byte *) &buf[buf_pos],
|
||
buf_pos, chunk,
|
||
&xfered_len);
|
||
|
||
if (status == TARGET_XFER_EOF)
|
||
{
|
||
/* Read all there was. */
|
||
buf.resize (buf_pos);
|
||
return buf;
|
||
}
|
||
else if (status != TARGET_XFER_OK)
|
||
{
|
||
/* An error occurred. */
|
||
return {};
|
||
}
|
||
|
||
buf_pos += xfered_len;
|
||
|
||
QUIT;
|
||
}
|
||
}
|
||
|
||
/* See target.h */
|
||
|
||
gdb::optional<gdb::byte_vector>
|
||
target_read_alloc (struct target_ops *ops, enum target_object object,
|
||
const char *annex)
|
||
{
|
||
return target_read_alloc_1<gdb_byte> (ops, object, annex);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
gdb::optional<gdb::char_vector>
|
||
target_read_stralloc (struct target_ops *ops, enum target_object object,
|
||
const char *annex)
|
||
{
|
||
gdb::optional<gdb::char_vector> buf
|
||
= target_read_alloc_1<char> (ops, object, annex);
|
||
|
||
if (!buf)
|
||
return {};
|
||
|
||
if (buf->back () != '\0')
|
||
buf->push_back ('\0');
|
||
|
||
/* Check for embedded NUL bytes; but allow trailing NULs. */
|
||
for (auto it = std::find (buf->begin (), buf->end (), '\0');
|
||
it != buf->end (); it++)
|
||
if (*it != '\0')
|
||
{
|
||
warning (_("target object %d, annex %s, "
|
||
"contained unexpected null characters"),
|
||
(int) object, annex ? annex : "(none)");
|
||
break;
|
||
}
|
||
|
||
return buf;
|
||
}
|
||
|
||
/* Memory transfer methods. */
|
||
|
||
void
|
||
get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf,
|
||
LONGEST len)
|
||
{
|
||
/* This method is used to read from an alternate, non-current
|
||
target. This read must bypass the overlay support (as symbols
|
||
don't match this target), and GDB's internal cache (wrong cache
|
||
for this target). */
|
||
if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len)
|
||
!= len)
|
||
memory_error (TARGET_XFER_E_IO, addr);
|
||
}
|
||
|
||
ULONGEST
|
||
get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr,
|
||
int len, enum bfd_endian byte_order)
|
||
{
|
||
gdb_byte buf[sizeof (ULONGEST)];
|
||
|
||
gdb_assert (len <= sizeof (buf));
|
||
get_target_memory (ops, addr, buf, len);
|
||
return extract_unsigned_integer (buf, len, byte_order);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
int
|
||
target_insert_breakpoint (struct gdbarch *gdbarch,
|
||
struct bp_target_info *bp_tgt)
|
||
{
|
||
if (!may_insert_breakpoints)
|
||
{
|
||
warning (_("May not insert breakpoints"));
|
||
return 1;
|
||
}
|
||
|
||
return target_stack->insert_breakpoint (gdbarch, bp_tgt);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
int
|
||
target_remove_breakpoint (struct gdbarch *gdbarch,
|
||
struct bp_target_info *bp_tgt,
|
||
enum remove_bp_reason reason)
|
||
{
|
||
/* This is kind of a weird case to handle, but the permission might
|
||
have been changed after breakpoints were inserted - in which case
|
||
we should just take the user literally and assume that any
|
||
breakpoints should be left in place. */
|
||
if (!may_insert_breakpoints)
|
||
{
|
||
warning (_("May not remove breakpoints"));
|
||
return 1;
|
||
}
|
||
|
||
return target_stack->remove_breakpoint (gdbarch, bp_tgt, reason);
|
||
}
|
||
|
||
static void
|
||
info_target_command (const char *args, int from_tty)
|
||
{
|
||
struct target_ops *t;
|
||
int has_all_mem = 0;
|
||
|
||
if (symfile_objfile != NULL)
|
||
printf_unfiltered (_("Symbols from \"%s\".\n"),
|
||
objfile_name (symfile_objfile));
|
||
|
||
for (t = target_stack; t != NULL; t = t->beneath)
|
||
{
|
||
if (!t->has_memory ())
|
||
continue;
|
||
|
||
if ((int) (t->to_stratum) <= (int) dummy_stratum)
|
||
continue;
|
||
if (has_all_mem)
|
||
printf_unfiltered (_("\tWhile running this, "
|
||
"GDB does not access memory from...\n"));
|
||
printf_unfiltered ("%s:\n", t->longname ());
|
||
t->files_info ();
|
||
has_all_mem = t->has_all_memory ();
|
||
}
|
||
}
|
||
|
||
/* This function is called before any new inferior is created, e.g.
|
||
by running a program, attaching, or connecting to a target.
|
||
It cleans up any state from previous invocations which might
|
||
change between runs. This is a subset of what target_preopen
|
||
resets (things which might change between targets). */
|
||
|
||
void
|
||
target_pre_inferior (int from_tty)
|
||
{
|
||
/* Clear out solib state. Otherwise the solib state of the previous
|
||
inferior might have survived and is entirely wrong for the new
|
||
target. This has been observed on GNU/Linux using glibc 2.3. How
|
||
to reproduce:
|
||
|
||
bash$ ./foo&
|
||
[1] 4711
|
||
bash$ ./foo&
|
||
[1] 4712
|
||
bash$ gdb ./foo
|
||
[...]
|
||
(gdb) attach 4711
|
||
(gdb) detach
|
||
(gdb) attach 4712
|
||
Cannot access memory at address 0xdeadbeef
|
||
*/
|
||
|
||
/* In some OSs, the shared library list is the same/global/shared
|
||
across inferiors. If code is shared between processes, so are
|
||
memory regions and features. */
|
||
if (!gdbarch_has_global_solist (target_gdbarch ()))
|
||
{
|
||
no_shared_libraries (NULL, from_tty);
|
||
|
||
invalidate_target_mem_regions ();
|
||
|
||
target_clear_description ();
|
||
}
|
||
|
||
/* attach_flag may be set if the previous process associated with
|
||
the inferior was attached to. */
|
||
current_inferior ()->attach_flag = 0;
|
||
|
||
current_inferior ()->highest_thread_num = 0;
|
||
|
||
agent_capability_invalidate ();
|
||
}
|
||
|
||
/* Callback for iterate_over_inferiors. Gets rid of the given
|
||
inferior. */
|
||
|
||
static int
|
||
dispose_inferior (struct inferior *inf, void *args)
|
||
{
|
||
struct thread_info *thread;
|
||
|
||
thread = any_thread_of_process (inf->pid);
|
||
if (thread)
|
||
{
|
||
switch_to_thread (thread->ptid);
|
||
|
||
/* Core inferiors actually should be detached, not killed. */
|
||
if (target_has_execution)
|
||
target_kill ();
|
||
else
|
||
target_detach (inf, 0);
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* This is to be called by the open routine before it does
|
||
anything. */
|
||
|
||
void
|
||
target_preopen (int from_tty)
|
||
{
|
||
dont_repeat ();
|
||
|
||
if (have_inferiors ())
|
||
{
|
||
if (!from_tty
|
||
|| !have_live_inferiors ()
|
||
|| query (_("A program is being debugged already. Kill it? ")))
|
||
iterate_over_inferiors (dispose_inferior, NULL);
|
||
else
|
||
error (_("Program not killed."));
|
||
}
|
||
|
||
/* Calling target_kill may remove the target from the stack. But if
|
||
it doesn't (which seems like a win for UDI), remove it now. */
|
||
/* Leave the exec target, though. The user may be switching from a
|
||
live process to a core of the same program. */
|
||
pop_all_targets_above (file_stratum);
|
||
|
||
target_pre_inferior (from_tty);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_detach (inferior *inf, int from_tty)
|
||
{
|
||
/* As long as some to_detach implementations rely on the current_inferior
|
||
(either directly, or indirectly, like through target_gdbarch or by
|
||
reading memory), INF needs to be the current inferior. When that
|
||
requirement will become no longer true, then we can remove this
|
||
assertion. */
|
||
gdb_assert (inf == current_inferior ());
|
||
|
||
if (gdbarch_has_global_breakpoints (target_gdbarch ()))
|
||
/* Don't remove global breakpoints here. They're removed on
|
||
disconnection from the target. */
|
||
;
|
||
else
|
||
/* If we're in breakpoints-always-inserted mode, have to remove
|
||
them before detaching. */
|
||
remove_breakpoints_pid (ptid_get_pid (inferior_ptid));
|
||
|
||
prepare_for_detach ();
|
||
|
||
target_stack->detach (inf, from_tty);
|
||
}
|
||
|
||
void
|
||
target_disconnect (const char *args, int from_tty)
|
||
{
|
||
/* If we're in breakpoints-always-inserted mode or if breakpoints
|
||
are global across processes, we have to remove them before
|
||
disconnecting. */
|
||
remove_breakpoints ();
|
||
|
||
target_stack->disconnect (args, from_tty);
|
||
}
|
||
|
||
/* See target/target.h. */
|
||
|
||
ptid_t
|
||
target_wait (ptid_t ptid, struct target_waitstatus *status, int options)
|
||
{
|
||
return target_stack->wait (ptid, status, options);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
ptid_t
|
||
default_target_wait (struct target_ops *ops,
|
||
ptid_t ptid, struct target_waitstatus *status,
|
||
int options)
|
||
{
|
||
status->kind = TARGET_WAITKIND_IGNORE;
|
||
return minus_one_ptid;
|
||
}
|
||
|
||
const char *
|
||
target_pid_to_str (ptid_t ptid)
|
||
{
|
||
return target_stack->pid_to_str (ptid);
|
||
}
|
||
|
||
const char *
|
||
target_thread_name (struct thread_info *info)
|
||
{
|
||
return target_stack->thread_name (info);
|
||
}
|
||
|
||
struct thread_info *
|
||
target_thread_handle_to_thread_info (const gdb_byte *thread_handle,
|
||
int handle_len,
|
||
struct inferior *inf)
|
||
{
|
||
return target_stack->thread_handle_to_thread_info (thread_handle,
|
||
handle_len, inf);
|
||
}
|
||
|
||
void
|
||
target_resume (ptid_t ptid, int step, enum gdb_signal signal)
|
||
{
|
||
target_dcache_invalidate ();
|
||
|
||
target_stack->resume (ptid, step, signal);
|
||
|
||
registers_changed_ptid (ptid);
|
||
/* We only set the internal executing state here. The user/frontend
|
||
running state is set at a higher level. */
|
||
set_executing (ptid, 1);
|
||
clear_inline_frame_state (ptid);
|
||
}
|
||
|
||
/* If true, target_commit_resume is a nop. */
|
||
static int defer_target_commit_resume;
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_commit_resume (void)
|
||
{
|
||
if (defer_target_commit_resume)
|
||
return;
|
||
|
||
target_stack->commit_resume ();
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
scoped_restore_tmpl<int>
|
||
make_scoped_defer_target_commit_resume ()
|
||
{
|
||
return make_scoped_restore (&defer_target_commit_resume, 1);
|
||
}
|
||
|
||
void
|
||
target_pass_signals (int numsigs, unsigned char *pass_signals)
|
||
{
|
||
target_stack->pass_signals (numsigs, pass_signals);
|
||
}
|
||
|
||
void
|
||
target_program_signals (int numsigs, unsigned char *program_signals)
|
||
{
|
||
target_stack->program_signals (numsigs, program_signals);
|
||
}
|
||
|
||
static int
|
||
default_follow_fork (struct target_ops *self, int follow_child,
|
||
int detach_fork)
|
||
{
|
||
/* Some target returned a fork event, but did not know how to follow it. */
|
||
internal_error (__FILE__, __LINE__,
|
||
_("could not find a target to follow fork"));
|
||
}
|
||
|
||
/* Look through the list of possible targets for a target that can
|
||
follow forks. */
|
||
|
||
int
|
||
target_follow_fork (int follow_child, int detach_fork)
|
||
{
|
||
return target_stack->follow_fork (follow_child, detach_fork);
|
||
}
|
||
|
||
/* Target wrapper for follow exec hook. */
|
||
|
||
void
|
||
target_follow_exec (struct inferior *inf, char *execd_pathname)
|
||
{
|
||
target_stack->follow_exec (inf, execd_pathname);
|
||
}
|
||
|
||
static void
|
||
default_mourn_inferior (struct target_ops *self)
|
||
{
|
||
internal_error (__FILE__, __LINE__,
|
||
_("could not find a target to follow mourn inferior"));
|
||
}
|
||
|
||
void
|
||
target_mourn_inferior (ptid_t ptid)
|
||
{
|
||
gdb_assert (ptid_equal (ptid, inferior_ptid));
|
||
target_stack->mourn_inferior ();
|
||
|
||
/* We no longer need to keep handles on any of the object files.
|
||
Make sure to release them to avoid unnecessarily locking any
|
||
of them while we're not actually debugging. */
|
||
bfd_cache_close_all ();
|
||
}
|
||
|
||
/* Look for a target which can describe architectural features, starting
|
||
from TARGET. If we find one, return its description. */
|
||
|
||
const struct target_desc *
|
||
target_read_description (struct target_ops *target)
|
||
{
|
||
return target->read_description ();
|
||
}
|
||
|
||
/* This implements a basic search of memory, reading target memory and
|
||
performing the search here (as opposed to performing the search in on the
|
||
target side with, for example, gdbserver). */
|
||
|
||
int
|
||
simple_search_memory (struct target_ops *ops,
|
||
CORE_ADDR start_addr, ULONGEST search_space_len,
|
||
const gdb_byte *pattern, ULONGEST pattern_len,
|
||
CORE_ADDR *found_addrp)
|
||
{
|
||
/* NOTE: also defined in find.c testcase. */
|
||
#define SEARCH_CHUNK_SIZE 16000
|
||
const unsigned chunk_size = SEARCH_CHUNK_SIZE;
|
||
/* Buffer to hold memory contents for searching. */
|
||
unsigned search_buf_size;
|
||
|
||
search_buf_size = chunk_size + pattern_len - 1;
|
||
|
||
/* No point in trying to allocate a buffer larger than the search space. */
|
||
if (search_space_len < search_buf_size)
|
||
search_buf_size = search_space_len;
|
||
|
||
gdb::byte_vector search_buf (search_buf_size);
|
||
|
||
/* Prime the search buffer. */
|
||
|
||
if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
|
||
search_buf.data (), start_addr, search_buf_size)
|
||
!= search_buf_size)
|
||
{
|
||
warning (_("Unable to access %s bytes of target "
|
||
"memory at %s, halting search."),
|
||
pulongest (search_buf_size), hex_string (start_addr));
|
||
return -1;
|
||
}
|
||
|
||
/* Perform the search.
|
||
|
||
The loop is kept simple by allocating [N + pattern-length - 1] bytes.
|
||
When we've scanned N bytes we copy the trailing bytes to the start and
|
||
read in another N bytes. */
|
||
|
||
while (search_space_len >= pattern_len)
|
||
{
|
||
gdb_byte *found_ptr;
|
||
unsigned nr_search_bytes
|
||
= std::min (search_space_len, (ULONGEST) search_buf_size);
|
||
|
||
found_ptr = (gdb_byte *) memmem (search_buf.data (), nr_search_bytes,
|
||
pattern, pattern_len);
|
||
|
||
if (found_ptr != NULL)
|
||
{
|
||
CORE_ADDR found_addr = start_addr + (found_ptr - search_buf.data ());
|
||
|
||
*found_addrp = found_addr;
|
||
return 1;
|
||
}
|
||
|
||
/* Not found in this chunk, skip to next chunk. */
|
||
|
||
/* Don't let search_space_len wrap here, it's unsigned. */
|
||
if (search_space_len >= chunk_size)
|
||
search_space_len -= chunk_size;
|
||
else
|
||
search_space_len = 0;
|
||
|
||
if (search_space_len >= pattern_len)
|
||
{
|
||
unsigned keep_len = search_buf_size - chunk_size;
|
||
CORE_ADDR read_addr = start_addr + chunk_size + keep_len;
|
||
int nr_to_read;
|
||
|
||
/* Copy the trailing part of the previous iteration to the front
|
||
of the buffer for the next iteration. */
|
||
gdb_assert (keep_len == pattern_len - 1);
|
||
memcpy (&search_buf[0], &search_buf[chunk_size], keep_len);
|
||
|
||
nr_to_read = std::min (search_space_len - keep_len,
|
||
(ULONGEST) chunk_size);
|
||
|
||
if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
|
||
&search_buf[keep_len], read_addr,
|
||
nr_to_read) != nr_to_read)
|
||
{
|
||
warning (_("Unable to access %s bytes of target "
|
||
"memory at %s, halting search."),
|
||
plongest (nr_to_read),
|
||
hex_string (read_addr));
|
||
return -1;
|
||
}
|
||
|
||
start_addr += chunk_size;
|
||
}
|
||
}
|
||
|
||
/* Not found. */
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Default implementation of memory-searching. */
|
||
|
||
static int
|
||
default_search_memory (struct target_ops *self,
|
||
CORE_ADDR start_addr, ULONGEST search_space_len,
|
||
const gdb_byte *pattern, ULONGEST pattern_len,
|
||
CORE_ADDR *found_addrp)
|
||
{
|
||
/* Start over from the top of the target stack. */
|
||
return simple_search_memory (target_stack,
|
||
start_addr, search_space_len,
|
||
pattern, pattern_len, found_addrp);
|
||
}
|
||
|
||
/* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
|
||
sequence of bytes in PATTERN with length PATTERN_LEN.
|
||
|
||
The result is 1 if found, 0 if not found, and -1 if there was an error
|
||
requiring halting of the search (e.g. memory read error).
|
||
If the pattern is found the address is recorded in FOUND_ADDRP. */
|
||
|
||
int
|
||
target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len,
|
||
const gdb_byte *pattern, ULONGEST pattern_len,
|
||
CORE_ADDR *found_addrp)
|
||
{
|
||
return target_stack->search_memory (start_addr, search_space_len,
|
||
pattern, pattern_len, found_addrp);
|
||
}
|
||
|
||
/* Look through the currently pushed targets. If none of them will
|
||
be able to restart the currently running process, issue an error
|
||
message. */
|
||
|
||
void
|
||
target_require_runnable (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = target_stack; t != NULL; t = t->beneath)
|
||
{
|
||
/* If this target knows how to create a new program, then
|
||
assume we will still be able to after killing the current
|
||
one. Either killing and mourning will not pop T, or else
|
||
find_default_run_target will find it again. */
|
||
if (t->can_create_inferior ())
|
||
return;
|
||
|
||
/* Do not worry about targets at certain strata that can not
|
||
create inferiors. Assume they will be pushed again if
|
||
necessary, and continue to the process_stratum. */
|
||
if (t->to_stratum > process_stratum)
|
||
continue;
|
||
|
||
error (_("The \"%s\" target does not support \"run\". "
|
||
"Try \"help target\" or \"continue\"."),
|
||
t->shortname ());
|
||
}
|
||
|
||
/* This function is only called if the target is running. In that
|
||
case there should have been a process_stratum target and it
|
||
should either know how to create inferiors, or not... */
|
||
internal_error (__FILE__, __LINE__, _("No targets found"));
|
||
}
|
||
|
||
/* Whether GDB is allowed to fall back to the default run target for
|
||
"run", "attach", etc. when no target is connected yet. */
|
||
static int auto_connect_native_target = 1;
|
||
|
||
static void
|
||
show_auto_connect_native_target (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file,
|
||
_("Whether GDB may automatically connect to the "
|
||
"native target is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
/* Look through the list of possible targets for a target that can
|
||
execute a run or attach command without any other data. This is
|
||
used to locate the default process stratum.
|
||
|
||
If DO_MESG is not NULL, the result is always valid (error() is
|
||
called for errors); else, return NULL on error. */
|
||
|
||
static struct target_ops *
|
||
find_default_run_target (const char *do_mesg)
|
||
{
|
||
struct target_ops *runable = NULL;
|
||
|
||
if (auto_connect_native_target)
|
||
{
|
||
struct target_ops *t;
|
||
int count = 0;
|
||
int i;
|
||
|
||
for (i = 0; VEC_iterate (target_ops_p, target_structs, i, t); ++i)
|
||
{
|
||
if (t->can_run ())
|
||
{
|
||
runable = t;
|
||
++count;
|
||
}
|
||
}
|
||
|
||
if (count != 1)
|
||
runable = NULL;
|
||
}
|
||
|
||
if (runable == NULL)
|
||
{
|
||
if (do_mesg)
|
||
error (_("Don't know how to %s. Try \"help target\"."), do_mesg);
|
||
else
|
||
return NULL;
|
||
}
|
||
|
||
return runable;
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
struct target_ops *
|
||
find_attach_target (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
/* If a target on the current stack can attach, use it. */
|
||
for (t = target_stack; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->can_attach ())
|
||
break;
|
||
}
|
||
|
||
/* Otherwise, use the default run target for attaching. */
|
||
if (t == NULL)
|
||
t = find_default_run_target ("attach");
|
||
|
||
return t;
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
struct target_ops *
|
||
find_run_target (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
/* If a target on the current stack can run, use it. */
|
||
for (t = target_stack; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->can_create_inferior ())
|
||
break;
|
||
}
|
||
|
||
/* Otherwise, use the default run target. */
|
||
if (t == NULL)
|
||
t = find_default_run_target ("run");
|
||
|
||
return t;
|
||
}
|
||
|
||
bool
|
||
target_ops::info_proc (const char *args, enum info_proc_what what)
|
||
{
|
||
return false;
|
||
}
|
||
|
||
/* Implement the "info proc" command. */
|
||
|
||
int
|
||
target_info_proc (const char *args, enum info_proc_what what)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
/* If we're already connected to something that can get us OS
|
||
related data, use it. Otherwise, try using the native
|
||
target. */
|
||
t = find_target_at (process_stratum);
|
||
if (t == NULL)
|
||
t = find_default_run_target (NULL);
|
||
|
||
for (; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->info_proc (args, what))
|
||
{
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_info_proc (\"%s\", %d)\n", args, what);
|
||
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
find_default_supports_disable_randomization (struct target_ops *self)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
t = find_default_run_target (NULL);
|
||
if (t != NULL)
|
||
return t->supports_disable_randomization ();
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
target_supports_disable_randomization (void)
|
||
{
|
||
return target_stack->supports_disable_randomization ();
|
||
}
|
||
|
||
/* See target/target.h. */
|
||
|
||
int
|
||
target_supports_multi_process (void)
|
||
{
|
||
return target_stack->supports_multi_process ();
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
gdb::optional<gdb::char_vector>
|
||
target_get_osdata (const char *type)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
/* If we're already connected to something that can get us OS
|
||
related data, use it. Otherwise, try using the native
|
||
target. */
|
||
t = find_target_at (process_stratum);
|
||
if (t == NULL)
|
||
t = find_default_run_target ("get OS data");
|
||
|
||
if (!t)
|
||
return {};
|
||
|
||
return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type);
|
||
}
|
||
|
||
static struct address_space *
|
||
default_thread_address_space (struct target_ops *self, ptid_t ptid)
|
||
{
|
||
struct inferior *inf;
|
||
|
||
/* Fall-back to the "main" address space of the inferior. */
|
||
inf = find_inferior_ptid (ptid);
|
||
|
||
if (inf == NULL || inf->aspace == NULL)
|
||
internal_error (__FILE__, __LINE__,
|
||
_("Can't determine the current "
|
||
"address space of thread %s\n"),
|
||
target_pid_to_str (ptid));
|
||
|
||
return inf->aspace;
|
||
}
|
||
|
||
/* Determine the current address space of thread PTID. */
|
||
|
||
struct address_space *
|
||
target_thread_address_space (ptid_t ptid)
|
||
{
|
||
struct address_space *aspace;
|
||
|
||
aspace = target_stack->thread_address_space (ptid);
|
||
gdb_assert (aspace != NULL);
|
||
|
||
return aspace;
|
||
}
|
||
|
||
void
|
||
target_ops::open (const char *, int)
|
||
{
|
||
gdb_assert_not_reached ("target_ops::open called");
|
||
}
|
||
|
||
void
|
||
target_ops::close ()
|
||
{
|
||
}
|
||
|
||
bool
|
||
target_ops::can_attach ()
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
void
|
||
target_ops::attach (const char *, int)
|
||
{
|
||
gdb_assert_not_reached ("target_ops::attach called");
|
||
}
|
||
|
||
bool
|
||
target_ops::can_create_inferior ()
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
void
|
||
target_ops::create_inferior (const char *, const std::string &,
|
||
char **, int)
|
||
{
|
||
gdb_assert_not_reached ("target_ops::create_inferior called");
|
||
}
|
||
|
||
int
|
||
target_ops::can_run ()
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
target_can_run ()
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = target_stack; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->can_run ())
|
||
return 1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Target file operations. */
|
||
|
||
static struct target_ops *
|
||
default_fileio_target (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
/* If we're already connected to something that can perform
|
||
file I/O, use it. Otherwise, try using the native target. */
|
||
t = find_target_at (process_stratum);
|
||
if (t != NULL)
|
||
return t;
|
||
return find_default_run_target ("file I/O");
|
||
}
|
||
|
||
/* File handle for target file operations. */
|
||
|
||
struct fileio_fh_t
|
||
{
|
||
/* The target on which this file is open. NULL if the target is
|
||
meanwhile closed while the handle is open. */
|
||
target_ops *target;
|
||
|
||
/* The file descriptor on the target. */
|
||
int target_fd;
|
||
|
||
/* Check whether this fileio_fh_t represents a closed file. */
|
||
bool is_closed ()
|
||
{
|
||
return target_fd < 0;
|
||
}
|
||
};
|
||
|
||
/* Vector of currently open file handles. The value returned by
|
||
target_fileio_open and passed as the FD argument to other
|
||
target_fileio_* functions is an index into this vector. This
|
||
vector's entries are never freed; instead, files are marked as
|
||
closed, and the handle becomes available for reuse. */
|
||
static std::vector<fileio_fh_t> fileio_fhandles;
|
||
|
||
/* Index into fileio_fhandles of the lowest handle that might be
|
||
closed. This permits handle reuse without searching the whole
|
||
list each time a new file is opened. */
|
||
static int lowest_closed_fd;
|
||
|
||
/* Invalidate the target associated with open handles that were open
|
||
on target TARG, since we're about to close (and maybe destroy) the
|
||
target. The handles remain open from the client's perspective, but
|
||
trying to do anything with them other than closing them will fail
|
||
with EIO. */
|
||
|
||
static void
|
||
fileio_handles_invalidate_target (target_ops *targ)
|
||
{
|
||
for (fileio_fh_t &fh : fileio_fhandles)
|
||
if (fh.target == targ)
|
||
fh.target = NULL;
|
||
}
|
||
|
||
/* Acquire a target fileio file descriptor. */
|
||
|
||
static int
|
||
acquire_fileio_fd (target_ops *target, int target_fd)
|
||
{
|
||
/* Search for closed handles to reuse. */
|
||
for (; lowest_closed_fd < fileio_fhandles.size (); lowest_closed_fd++)
|
||
{
|
||
fileio_fh_t &fh = fileio_fhandles[lowest_closed_fd];
|
||
|
||
if (fh.is_closed ())
|
||
break;
|
||
}
|
||
|
||
/* Push a new handle if no closed handles were found. */
|
||
if (lowest_closed_fd == fileio_fhandles.size ())
|
||
fileio_fhandles.push_back (fileio_fh_t {target, target_fd});
|
||
else
|
||
fileio_fhandles[lowest_closed_fd] = {target, target_fd};
|
||
|
||
/* Should no longer be marked closed. */
|
||
gdb_assert (!fileio_fhandles[lowest_closed_fd].is_closed ());
|
||
|
||
/* Return its index, and start the next lookup at
|
||
the next index. */
|
||
return lowest_closed_fd++;
|
||
}
|
||
|
||
/* Release a target fileio file descriptor. */
|
||
|
||
static void
|
||
release_fileio_fd (int fd, fileio_fh_t *fh)
|
||
{
|
||
fh->target_fd = -1;
|
||
lowest_closed_fd = std::min (lowest_closed_fd, fd);
|
||
}
|
||
|
||
/* Return a pointer to the fileio_fhandle_t corresponding to FD. */
|
||
|
||
static fileio_fh_t *
|
||
fileio_fd_to_fh (int fd)
|
||
{
|
||
return &fileio_fhandles[fd];
|
||
}
|
||
|
||
|
||
/* Default implementations of file i/o methods. We don't want these
|
||
to delegate automatically, because we need to know which target
|
||
supported the method, in order to call it directly from within
|
||
pread/pwrite, etc. */
|
||
|
||
int
|
||
target_ops::fileio_open (struct inferior *inf, const char *filename,
|
||
int flags, int mode, int warn_if_slow,
|
||
int *target_errno)
|
||
{
|
||
*target_errno = FILEIO_ENOSYS;
|
||
return -1;
|
||
}
|
||
|
||
int
|
||
target_ops::fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
|
||
ULONGEST offset, int *target_errno)
|
||
{
|
||
*target_errno = FILEIO_ENOSYS;
|
||
return -1;
|
||
}
|
||
|
||
int
|
||
target_ops::fileio_pread (int fd, gdb_byte *read_buf, int len,
|
||
ULONGEST offset, int *target_errno)
|
||
{
|
||
*target_errno = FILEIO_ENOSYS;
|
||
return -1;
|
||
}
|
||
|
||
int
|
||
target_ops::fileio_fstat (int fd, struct stat *sb, int *target_errno)
|
||
{
|
||
*target_errno = FILEIO_ENOSYS;
|
||
return -1;
|
||
}
|
||
|
||
int
|
||
target_ops::fileio_close (int fd, int *target_errno)
|
||
{
|
||
*target_errno = FILEIO_ENOSYS;
|
||
return -1;
|
||
}
|
||
|
||
int
|
||
target_ops::fileio_unlink (struct inferior *inf, const char *filename,
|
||
int *target_errno)
|
||
{
|
||
*target_errno = FILEIO_ENOSYS;
|
||
return -1;
|
||
}
|
||
|
||
gdb::optional<std::string>
|
||
target_ops::fileio_readlink (struct inferior *inf, const char *filename,
|
||
int *target_errno)
|
||
{
|
||
*target_errno = FILEIO_ENOSYS;
|
||
return {};
|
||
}
|
||
|
||
/* Helper for target_fileio_open and
|
||
target_fileio_open_warn_if_slow. */
|
||
|
||
static int
|
||
target_fileio_open_1 (struct inferior *inf, const char *filename,
|
||
int flags, int mode, int warn_if_slow,
|
||
int *target_errno)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = default_fileio_target (); t != NULL; t = t->beneath)
|
||
{
|
||
int fd = t->fileio_open (inf, filename, flags, mode,
|
||
warn_if_slow, target_errno);
|
||
|
||
if (fd == -1 && *target_errno == FILEIO_ENOSYS)
|
||
continue;
|
||
|
||
if (fd < 0)
|
||
fd = -1;
|
||
else
|
||
fd = acquire_fileio_fd (t, fd);
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_fileio_open (%d,%s,0x%x,0%o,%d)"
|
||
" = %d (%d)\n",
|
||
inf == NULL ? 0 : inf->num,
|
||
filename, flags, mode,
|
||
warn_if_slow, fd,
|
||
fd != -1 ? 0 : *target_errno);
|
||
return fd;
|
||
}
|
||
|
||
*target_errno = FILEIO_ENOSYS;
|
||
return -1;
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
int
|
||
target_fileio_open (struct inferior *inf, const char *filename,
|
||
int flags, int mode, int *target_errno)
|
||
{
|
||
return target_fileio_open_1 (inf, filename, flags, mode, 0,
|
||
target_errno);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
int
|
||
target_fileio_open_warn_if_slow (struct inferior *inf,
|
||
const char *filename,
|
||
int flags, int mode, int *target_errno)
|
||
{
|
||
return target_fileio_open_1 (inf, filename, flags, mode, 1,
|
||
target_errno);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
int
|
||
target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
|
||
ULONGEST offset, int *target_errno)
|
||
{
|
||
fileio_fh_t *fh = fileio_fd_to_fh (fd);
|
||
int ret = -1;
|
||
|
||
if (fh->is_closed ())
|
||
*target_errno = EBADF;
|
||
else if (fh->target == NULL)
|
||
*target_errno = EIO;
|
||
else
|
||
ret = fh->target->fileio_pwrite (fh->target_fd, write_buf,
|
||
len, offset, target_errno);
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_fileio_pwrite (%d,...,%d,%s) "
|
||
"= %d (%d)\n",
|
||
fd, len, pulongest (offset),
|
||
ret, ret != -1 ? 0 : *target_errno);
|
||
return ret;
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
int
|
||
target_fileio_pread (int fd, gdb_byte *read_buf, int len,
|
||
ULONGEST offset, int *target_errno)
|
||
{
|
||
fileio_fh_t *fh = fileio_fd_to_fh (fd);
|
||
int ret = -1;
|
||
|
||
if (fh->is_closed ())
|
||
*target_errno = EBADF;
|
||
else if (fh->target == NULL)
|
||
*target_errno = EIO;
|
||
else
|
||
ret = fh->target->fileio_pread (fh->target_fd, read_buf,
|
||
len, offset, target_errno);
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_fileio_pread (%d,...,%d,%s) "
|
||
"= %d (%d)\n",
|
||
fd, len, pulongest (offset),
|
||
ret, ret != -1 ? 0 : *target_errno);
|
||
return ret;
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
int
|
||
target_fileio_fstat (int fd, struct stat *sb, int *target_errno)
|
||
{
|
||
fileio_fh_t *fh = fileio_fd_to_fh (fd);
|
||
int ret = -1;
|
||
|
||
if (fh->is_closed ())
|
||
*target_errno = EBADF;
|
||
else if (fh->target == NULL)
|
||
*target_errno = EIO;
|
||
else
|
||
ret = fh->target->fileio_fstat (fh->target_fd, sb, target_errno);
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_fileio_fstat (%d) = %d (%d)\n",
|
||
fd, ret, ret != -1 ? 0 : *target_errno);
|
||
return ret;
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
int
|
||
target_fileio_close (int fd, int *target_errno)
|
||
{
|
||
fileio_fh_t *fh = fileio_fd_to_fh (fd);
|
||
int ret = -1;
|
||
|
||
if (fh->is_closed ())
|
||
*target_errno = EBADF;
|
||
else
|
||
{
|
||
if (fh->target != NULL)
|
||
ret = fh->target->fileio_close (fh->target_fd,
|
||
target_errno);
|
||
else
|
||
ret = 0;
|
||
release_fileio_fd (fd, fh);
|
||
}
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_fileio_close (%d) = %d (%d)\n",
|
||
fd, ret, ret != -1 ? 0 : *target_errno);
|
||
return ret;
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
int
|
||
target_fileio_unlink (struct inferior *inf, const char *filename,
|
||
int *target_errno)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = default_fileio_target (); t != NULL; t = t->beneath)
|
||
{
|
||
int ret = t->fileio_unlink (inf, filename, target_errno);
|
||
|
||
if (ret == -1 && *target_errno == FILEIO_ENOSYS)
|
||
continue;
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_fileio_unlink (%d,%s)"
|
||
" = %d (%d)\n",
|
||
inf == NULL ? 0 : inf->num, filename,
|
||
ret, ret != -1 ? 0 : *target_errno);
|
||
return ret;
|
||
}
|
||
|
||
*target_errno = FILEIO_ENOSYS;
|
||
return -1;
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
gdb::optional<std::string>
|
||
target_fileio_readlink (struct inferior *inf, const char *filename,
|
||
int *target_errno)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = default_fileio_target (); t != NULL; t = t->beneath)
|
||
{
|
||
gdb::optional<std::string> ret
|
||
= t->fileio_readlink (inf, filename, target_errno);
|
||
|
||
if (!ret.has_value () && *target_errno == FILEIO_ENOSYS)
|
||
continue;
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"target_fileio_readlink (%d,%s)"
|
||
" = %s (%d)\n",
|
||
inf == NULL ? 0 : inf->num,
|
||
filename, ret ? ret->c_str () : "(nil)",
|
||
ret ? 0 : *target_errno);
|
||
return ret;
|
||
}
|
||
|
||
*target_errno = FILEIO_ENOSYS;
|
||
return {};
|
||
}
|
||
|
||
/* Like scoped_fd, but specific to target fileio. */
|
||
|
||
class scoped_target_fd
|
||
{
|
||
public:
|
||
explicit scoped_target_fd (int fd) noexcept
|
||
: m_fd (fd)
|
||
{
|
||
}
|
||
|
||
~scoped_target_fd ()
|
||
{
|
||
if (m_fd >= 0)
|
||
{
|
||
int target_errno;
|
||
|
||
target_fileio_close (m_fd, &target_errno);
|
||
}
|
||
}
|
||
|
||
DISABLE_COPY_AND_ASSIGN (scoped_target_fd);
|
||
|
||
int get () const noexcept
|
||
{
|
||
return m_fd;
|
||
}
|
||
|
||
private:
|
||
int m_fd;
|
||
};
|
||
|
||
/* Read target file FILENAME, in the filesystem as seen by INF. If
|
||
INF is NULL, use the filesystem seen by the debugger (GDB or, for
|
||
remote targets, the remote stub). Store the result in *BUF_P and
|
||
return the size of the transferred data. PADDING additional bytes
|
||
are available in *BUF_P. This is a helper function for
|
||
target_fileio_read_alloc; see the declaration of that function for
|
||
more information. */
|
||
|
||
static LONGEST
|
||
target_fileio_read_alloc_1 (struct inferior *inf, const char *filename,
|
||
gdb_byte **buf_p, int padding)
|
||
{
|
||
size_t buf_alloc, buf_pos;
|
||
gdb_byte *buf;
|
||
LONGEST n;
|
||
int target_errno;
|
||
|
||
scoped_target_fd fd (target_fileio_open (inf, filename, FILEIO_O_RDONLY,
|
||
0700, &target_errno));
|
||
if (fd.get () == -1)
|
||
return -1;
|
||
|
||
/* Start by reading up to 4K at a time. The target will throttle
|
||
this number down if necessary. */
|
||
buf_alloc = 4096;
|
||
buf = (gdb_byte *) xmalloc (buf_alloc);
|
||
buf_pos = 0;
|
||
while (1)
|
||
{
|
||
n = target_fileio_pread (fd.get (), &buf[buf_pos],
|
||
buf_alloc - buf_pos - padding, buf_pos,
|
||
&target_errno);
|
||
if (n < 0)
|
||
{
|
||
/* An error occurred. */
|
||
xfree (buf);
|
||
return -1;
|
||
}
|
||
else if (n == 0)
|
||
{
|
||
/* Read all there was. */
|
||
if (buf_pos == 0)
|
||
xfree (buf);
|
||
else
|
||
*buf_p = buf;
|
||
return buf_pos;
|
||
}
|
||
|
||
buf_pos += n;
|
||
|
||
/* If the buffer is filling up, expand it. */
|
||
if (buf_alloc < buf_pos * 2)
|
||
{
|
||
buf_alloc *= 2;
|
||
buf = (gdb_byte *) xrealloc (buf, buf_alloc);
|
||
}
|
||
|
||
QUIT;
|
||
}
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
LONGEST
|
||
target_fileio_read_alloc (struct inferior *inf, const char *filename,
|
||
gdb_byte **buf_p)
|
||
{
|
||
return target_fileio_read_alloc_1 (inf, filename, buf_p, 0);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
gdb::unique_xmalloc_ptr<char>
|
||
target_fileio_read_stralloc (struct inferior *inf, const char *filename)
|
||
{
|
||
gdb_byte *buffer;
|
||
char *bufstr;
|
||
LONGEST i, transferred;
|
||
|
||
transferred = target_fileio_read_alloc_1 (inf, filename, &buffer, 1);
|
||
bufstr = (char *) buffer;
|
||
|
||
if (transferred < 0)
|
||
return gdb::unique_xmalloc_ptr<char> (nullptr);
|
||
|
||
if (transferred == 0)
|
||
return gdb::unique_xmalloc_ptr<char> (xstrdup (""));
|
||
|
||
bufstr[transferred] = 0;
|
||
|
||
/* Check for embedded NUL bytes; but allow trailing NULs. */
|
||
for (i = strlen (bufstr); i < transferred; i++)
|
||
if (bufstr[i] != 0)
|
||
{
|
||
warning (_("target file %s "
|
||
"contained unexpected null characters"),
|
||
filename);
|
||
break;
|
||
}
|
||
|
||
return gdb::unique_xmalloc_ptr<char> (bufstr);
|
||
}
|
||
|
||
|
||
static int
|
||
default_region_ok_for_hw_watchpoint (struct target_ops *self,
|
||
CORE_ADDR addr, int len)
|
||
{
|
||
return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT);
|
||
}
|
||
|
||
static int
|
||
default_watchpoint_addr_within_range (struct target_ops *target,
|
||
CORE_ADDR addr,
|
||
CORE_ADDR start, int length)
|
||
{
|
||
return addr >= start && addr < start + length;
|
||
}
|
||
|
||
static struct gdbarch *
|
||
default_thread_architecture (struct target_ops *ops, ptid_t ptid)
|
||
{
|
||
inferior *inf = find_inferior_ptid (ptid);
|
||
gdb_assert (inf != NULL);
|
||
return inf->gdbarch;
|
||
}
|
||
|
||
/*
|
||
* Find the next target down the stack from the specified target.
|
||
*/
|
||
|
||
struct target_ops *
|
||
find_target_beneath (struct target_ops *t)
|
||
{
|
||
return t->beneath;
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
struct target_ops *
|
||
find_target_at (enum strata stratum)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
for (t = target_stack; t != NULL; t = t->beneath)
|
||
if (t->to_stratum == stratum)
|
||
return t;
|
||
|
||
return NULL;
|
||
}
|
||
|
||
|
||
|
||
/* See target.h */
|
||
|
||
void
|
||
target_announce_detach (int from_tty)
|
||
{
|
||
pid_t pid;
|
||
const char *exec_file;
|
||
|
||
if (!from_tty)
|
||
return;
|
||
|
||
exec_file = get_exec_file (0);
|
||
if (exec_file == NULL)
|
||
exec_file = "";
|
||
|
||
pid = ptid_get_pid (inferior_ptid);
|
||
printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file,
|
||
target_pid_to_str (pid_to_ptid (pid)));
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
|
||
/* The inferior process has died. Long live the inferior! */
|
||
|
||
void
|
||
generic_mourn_inferior (void)
|
||
{
|
||
ptid_t ptid;
|
||
|
||
ptid = inferior_ptid;
|
||
inferior_ptid = null_ptid;
|
||
|
||
/* Mark breakpoints uninserted in case something tries to delete a
|
||
breakpoint while we delete the inferior's threads (which would
|
||
fail, since the inferior is long gone). */
|
||
mark_breakpoints_out ();
|
||
|
||
if (!ptid_equal (ptid, null_ptid))
|
||
{
|
||
int pid = ptid_get_pid (ptid);
|
||
exit_inferior (pid);
|
||
}
|
||
|
||
/* Note this wipes step-resume breakpoints, so needs to be done
|
||
after exit_inferior, which ends up referencing the step-resume
|
||
breakpoints through clear_thread_inferior_resources. */
|
||
breakpoint_init_inferior (inf_exited);
|
||
|
||
registers_changed ();
|
||
|
||
reopen_exec_file ();
|
||
reinit_frame_cache ();
|
||
|
||
if (deprecated_detach_hook)
|
||
deprecated_detach_hook ();
|
||
}
|
||
|
||
/* Convert a normal process ID to a string. Returns the string in a
|
||
static buffer. */
|
||
|
||
const char *
|
||
normal_pid_to_str (ptid_t ptid)
|
||
{
|
||
static char buf[32];
|
||
|
||
xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid));
|
||
return buf;
|
||
}
|
||
|
||
static const char *
|
||
default_pid_to_str (struct target_ops *ops, ptid_t ptid)
|
||
{
|
||
return normal_pid_to_str (ptid);
|
||
}
|
||
|
||
/* Error-catcher for target_find_memory_regions. */
|
||
static int
|
||
dummy_find_memory_regions (struct target_ops *self,
|
||
find_memory_region_ftype ignore1, void *ignore2)
|
||
{
|
||
error (_("Command not implemented for this target."));
|
||
return 0;
|
||
}
|
||
|
||
/* Error-catcher for target_make_corefile_notes. */
|
||
static char *
|
||
dummy_make_corefile_notes (struct target_ops *self,
|
||
bfd *ignore1, int *ignore2)
|
||
{
|
||
error (_("Command not implemented for this target."));
|
||
return NULL;
|
||
}
|
||
|
||
#include "target-delegates.c"
|
||
|
||
|
||
dummy_target::dummy_target ()
|
||
{
|
||
to_stratum = dummy_stratum;
|
||
}
|
||
|
||
const char *
|
||
dummy_target::shortname ()
|
||
{
|
||
return "None";
|
||
}
|
||
|
||
const char *
|
||
dummy_target::longname ()
|
||
{
|
||
return _("None");
|
||
}
|
||
|
||
const char *
|
||
dummy_target::doc ()
|
||
{
|
||
return "";
|
||
}
|
||
|
||
debug_target::debug_target ()
|
||
{
|
||
to_stratum = debug_stratum;
|
||
}
|
||
|
||
const char *
|
||
debug_target::shortname ()
|
||
{
|
||
return beneath->shortname ();
|
||
}
|
||
|
||
const char *
|
||
debug_target::longname ()
|
||
{
|
||
return beneath->longname ();
|
||
}
|
||
|
||
const char *
|
||
debug_target::doc ()
|
||
{
|
||
return beneath->doc ();
|
||
}
|
||
|
||
|
||
|
||
void
|
||
target_close (struct target_ops *targ)
|
||
{
|
||
gdb_assert (!target_is_pushed (targ));
|
||
|
||
fileio_handles_invalidate_target (targ);
|
||
|
||
targ->close ();
|
||
|
||
if (targetdebug)
|
||
fprintf_unfiltered (gdb_stdlog, "target_close ()\n");
|
||
}
|
||
|
||
int
|
||
target_thread_alive (ptid_t ptid)
|
||
{
|
||
return target_stack->thread_alive (ptid);
|
||
}
|
||
|
||
void
|
||
target_update_thread_list (void)
|
||
{
|
||
target_stack->update_thread_list ();
|
||
}
|
||
|
||
void
|
||
target_stop (ptid_t ptid)
|
||
{
|
||
if (!may_stop)
|
||
{
|
||
warning (_("May not interrupt or stop the target, ignoring attempt"));
|
||
return;
|
||
}
|
||
|
||
target_stack->stop (ptid);
|
||
}
|
||
|
||
void
|
||
target_interrupt ()
|
||
{
|
||
if (!may_stop)
|
||
{
|
||
warning (_("May not interrupt or stop the target, ignoring attempt"));
|
||
return;
|
||
}
|
||
|
||
target_stack->interrupt ();
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_pass_ctrlc (void)
|
||
{
|
||
target_stack->pass_ctrlc ();
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
default_target_pass_ctrlc (struct target_ops *ops)
|
||
{
|
||
target_interrupt ();
|
||
}
|
||
|
||
/* See target/target.h. */
|
||
|
||
void
|
||
target_stop_and_wait (ptid_t ptid)
|
||
{
|
||
struct target_waitstatus status;
|
||
int was_non_stop = non_stop;
|
||
|
||
non_stop = 1;
|
||
target_stop (ptid);
|
||
|
||
memset (&status, 0, sizeof (status));
|
||
target_wait (ptid, &status, 0);
|
||
|
||
non_stop = was_non_stop;
|
||
}
|
||
|
||
/* See target/target.h. */
|
||
|
||
void
|
||
target_continue_no_signal (ptid_t ptid)
|
||
{
|
||
target_resume (ptid, 0, GDB_SIGNAL_0);
|
||
}
|
||
|
||
/* See target/target.h. */
|
||
|
||
void
|
||
target_continue (ptid_t ptid, enum gdb_signal signal)
|
||
{
|
||
target_resume (ptid, 0, signal);
|
||
}
|
||
|
||
/* Concatenate ELEM to LIST, a comma separate list, and return the
|
||
result. The LIST incoming argument is released. */
|
||
|
||
static char *
|
||
str_comma_list_concat_elem (char *list, const char *elem)
|
||
{
|
||
if (list == NULL)
|
||
return xstrdup (elem);
|
||
else
|
||
return reconcat (list, list, ", ", elem, (char *) NULL);
|
||
}
|
||
|
||
/* Helper for target_options_to_string. If OPT is present in
|
||
TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
|
||
Returns the new resulting string. OPT is removed from
|
||
TARGET_OPTIONS. */
|
||
|
||
static char *
|
||
do_option (int *target_options, char *ret,
|
||
int opt, const char *opt_str)
|
||
{
|
||
if ((*target_options & opt) != 0)
|
||
{
|
||
ret = str_comma_list_concat_elem (ret, opt_str);
|
||
*target_options &= ~opt;
|
||
}
|
||
|
||
return ret;
|
||
}
|
||
|
||
char *
|
||
target_options_to_string (int target_options)
|
||
{
|
||
char *ret = NULL;
|
||
|
||
#define DO_TARG_OPTION(OPT) \
|
||
ret = do_option (&target_options, ret, OPT, #OPT)
|
||
|
||
DO_TARG_OPTION (TARGET_WNOHANG);
|
||
|
||
if (target_options != 0)
|
||
ret = str_comma_list_concat_elem (ret, "unknown???");
|
||
|
||
if (ret == NULL)
|
||
ret = xstrdup ("");
|
||
return ret;
|
||
}
|
||
|
||
void
|
||
target_fetch_registers (struct regcache *regcache, int regno)
|
||
{
|
||
target_stack->fetch_registers (regcache, regno);
|
||
if (targetdebug)
|
||
regcache->debug_print_register ("target_fetch_registers", regno);
|
||
}
|
||
|
||
void
|
||
target_store_registers (struct regcache *regcache, int regno)
|
||
{
|
||
if (!may_write_registers)
|
||
error (_("Writing to registers is not allowed (regno %d)"), regno);
|
||
|
||
target_stack->store_registers (regcache, regno);
|
||
if (targetdebug)
|
||
{
|
||
regcache->debug_print_register ("target_store_registers", regno);
|
||
}
|
||
}
|
||
|
||
int
|
||
target_core_of_thread (ptid_t ptid)
|
||
{
|
||
return target_stack->core_of_thread (ptid);
|
||
}
|
||
|
||
int
|
||
simple_verify_memory (struct target_ops *ops,
|
||
const gdb_byte *data, CORE_ADDR lma, ULONGEST size)
|
||
{
|
||
LONGEST total_xfered = 0;
|
||
|
||
while (total_xfered < size)
|
||
{
|
||
ULONGEST xfered_len;
|
||
enum target_xfer_status status;
|
||
gdb_byte buf[1024];
|
||
ULONGEST howmuch = std::min<ULONGEST> (sizeof (buf), size - total_xfered);
|
||
|
||
status = target_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL,
|
||
buf, NULL, lma + total_xfered, howmuch,
|
||
&xfered_len);
|
||
if (status == TARGET_XFER_OK
|
||
&& memcmp (data + total_xfered, buf, xfered_len) == 0)
|
||
{
|
||
total_xfered += xfered_len;
|
||
QUIT;
|
||
}
|
||
else
|
||
return 0;
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
/* Default implementation of memory verification. */
|
||
|
||
static int
|
||
default_verify_memory (struct target_ops *self,
|
||
const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size)
|
||
{
|
||
/* Start over from the top of the target stack. */
|
||
return simple_verify_memory (target_stack,
|
||
data, memaddr, size);
|
||
}
|
||
|
||
int
|
||
target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size)
|
||
{
|
||
return target_stack->verify_memory (data, memaddr, size);
|
||
}
|
||
|
||
/* The documentation for this function is in its prototype declaration in
|
||
target.h. */
|
||
|
||
int
|
||
target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask,
|
||
enum target_hw_bp_type rw)
|
||
{
|
||
return target_stack->insert_mask_watchpoint (addr, mask, rw);
|
||
}
|
||
|
||
/* The documentation for this function is in its prototype declaration in
|
||
target.h. */
|
||
|
||
int
|
||
target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask,
|
||
enum target_hw_bp_type rw)
|
||
{
|
||
return target_stack->remove_mask_watchpoint (addr, mask, rw);
|
||
}
|
||
|
||
/* The documentation for this function is in its prototype declaration
|
||
in target.h. */
|
||
|
||
int
|
||
target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask)
|
||
{
|
||
return target_stack->masked_watch_num_registers (addr, mask);
|
||
}
|
||
|
||
/* The documentation for this function is in its prototype declaration
|
||
in target.h. */
|
||
|
||
int
|
||
target_ranged_break_num_registers (void)
|
||
{
|
||
return target_stack->ranged_break_num_registers ();
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
struct btrace_target_info *
|
||
target_enable_btrace (ptid_t ptid, const struct btrace_config *conf)
|
||
{
|
||
return target_stack->enable_btrace (ptid, conf);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_disable_btrace (struct btrace_target_info *btinfo)
|
||
{
|
||
target_stack->disable_btrace (btinfo);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_teardown_btrace (struct btrace_target_info *btinfo)
|
||
{
|
||
target_stack->teardown_btrace (btinfo);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
enum btrace_error
|
||
target_read_btrace (struct btrace_data *btrace,
|
||
struct btrace_target_info *btinfo,
|
||
enum btrace_read_type type)
|
||
{
|
||
return target_stack->read_btrace (btrace, btinfo, type);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
const struct btrace_config *
|
||
target_btrace_conf (const struct btrace_target_info *btinfo)
|
||
{
|
||
return target_stack->btrace_conf (btinfo);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_stop_recording (void)
|
||
{
|
||
target_stack->stop_recording ();
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_save_record (const char *filename)
|
||
{
|
||
target_stack->save_record (filename);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
int
|
||
target_supports_delete_record ()
|
||
{
|
||
return target_stack->supports_delete_record ();
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_delete_record (void)
|
||
{
|
||
target_stack->delete_record ();
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
enum record_method
|
||
target_record_method (ptid_t ptid)
|
||
{
|
||
return target_stack->record_method (ptid);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
int
|
||
target_record_is_replaying (ptid_t ptid)
|
||
{
|
||
return target_stack->record_is_replaying (ptid);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
int
|
||
target_record_will_replay (ptid_t ptid, int dir)
|
||
{
|
||
return target_stack->record_will_replay (ptid, dir);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_record_stop_replaying (void)
|
||
{
|
||
target_stack->record_stop_replaying ();
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_goto_record_begin (void)
|
||
{
|
||
target_stack->goto_record_begin ();
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_goto_record_end (void)
|
||
{
|
||
target_stack->goto_record_end ();
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_goto_record (ULONGEST insn)
|
||
{
|
||
target_stack->goto_record (insn);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_insn_history (int size, gdb_disassembly_flags flags)
|
||
{
|
||
target_stack->insn_history (size, flags);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_insn_history_from (ULONGEST from, int size,
|
||
gdb_disassembly_flags flags)
|
||
{
|
||
target_stack->insn_history_from (from, size, flags);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_insn_history_range (ULONGEST begin, ULONGEST end,
|
||
gdb_disassembly_flags flags)
|
||
{
|
||
target_stack->insn_history_range (begin, end, flags);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_call_history (int size, record_print_flags flags)
|
||
{
|
||
target_stack->call_history (size, flags);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_call_history_from (ULONGEST begin, int size, record_print_flags flags)
|
||
{
|
||
target_stack->call_history_from (begin, size, flags);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags)
|
||
{
|
||
target_stack->call_history_range (begin, end, flags);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
const struct frame_unwind *
|
||
target_get_unwinder (void)
|
||
{
|
||
return target_stack->get_unwinder ();
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
const struct frame_unwind *
|
||
target_get_tailcall_unwinder (void)
|
||
{
|
||
return target_stack->get_tailcall_unwinder ();
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_prepare_to_generate_core (void)
|
||
{
|
||
target_stack->prepare_to_generate_core ();
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_done_generating_core (void)
|
||
{
|
||
target_stack->done_generating_core ();
|
||
}
|
||
|
||
|
||
|
||
static char targ_desc[] =
|
||
"Names of targets and files being debugged.\nShows the entire \
|
||
stack of targets currently in use (including the exec-file,\n\
|
||
core-file, and process, if any), as well as the symbol file name.";
|
||
|
||
static void
|
||
default_rcmd (struct target_ops *self, const char *command,
|
||
struct ui_file *output)
|
||
{
|
||
error (_("\"monitor\" command not supported by this target."));
|
||
}
|
||
|
||
static void
|
||
do_monitor_command (const char *cmd, int from_tty)
|
||
{
|
||
target_rcmd (cmd, gdb_stdtarg);
|
||
}
|
||
|
||
/* Erases all the memory regions marked as flash. CMD and FROM_TTY are
|
||
ignored. */
|
||
|
||
void
|
||
flash_erase_command (const char *cmd, int from_tty)
|
||
{
|
||
/* Used to communicate termination of flash operations to the target. */
|
||
bool found_flash_region = false;
|
||
struct gdbarch *gdbarch = target_gdbarch ();
|
||
|
||
std::vector<mem_region> mem_regions = target_memory_map ();
|
||
|
||
/* Iterate over all memory regions. */
|
||
for (const mem_region &m : mem_regions)
|
||
{
|
||
/* Is this a flash memory region? */
|
||
if (m.attrib.mode == MEM_FLASH)
|
||
{
|
||
found_flash_region = true;
|
||
target_flash_erase (m.lo, m.hi - m.lo);
|
||
|
||
ui_out_emit_tuple tuple_emitter (current_uiout, "erased-regions");
|
||
|
||
current_uiout->message (_("Erasing flash memory region at address "));
|
||
current_uiout->field_fmt ("address", "%s", paddress (gdbarch, m.lo));
|
||
current_uiout->message (", size = ");
|
||
current_uiout->field_fmt ("size", "%s", hex_string (m.hi - m.lo));
|
||
current_uiout->message ("\n");
|
||
}
|
||
}
|
||
|
||
/* Did we do any flash operations? If so, we need to finalize them. */
|
||
if (found_flash_region)
|
||
target_flash_done ();
|
||
else
|
||
current_uiout->message (_("No flash memory regions found.\n"));
|
||
}
|
||
|
||
/* Print the name of each layers of our target stack. */
|
||
|
||
static void
|
||
maintenance_print_target_stack (const char *cmd, int from_tty)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
printf_filtered (_("The current target stack is:\n"));
|
||
|
||
for (t = target_stack; t != NULL; t = t->beneath)
|
||
{
|
||
if (t->to_stratum == debug_stratum)
|
||
continue;
|
||
printf_filtered (" - %s (%s)\n", t->shortname (), t->longname ());
|
||
}
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_async (int enable)
|
||
{
|
||
infrun_async (enable);
|
||
target_stack->async (enable);
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
void
|
||
target_thread_events (int enable)
|
||
{
|
||
target_stack->thread_events (enable);
|
||
}
|
||
|
||
/* Controls if targets can report that they can/are async. This is
|
||
just for maintainers to use when debugging gdb. */
|
||
int target_async_permitted = 1;
|
||
|
||
/* The set command writes to this variable. If the inferior is
|
||
executing, target_async_permitted is *not* updated. */
|
||
static int target_async_permitted_1 = 1;
|
||
|
||
static void
|
||
maint_set_target_async_command (const char *args, int from_tty,
|
||
struct cmd_list_element *c)
|
||
{
|
||
if (have_live_inferiors ())
|
||
{
|
||
target_async_permitted_1 = target_async_permitted;
|
||
error (_("Cannot change this setting while the inferior is running."));
|
||
}
|
||
|
||
target_async_permitted = target_async_permitted_1;
|
||
}
|
||
|
||
static void
|
||
maint_show_target_async_command (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c,
|
||
const char *value)
|
||
{
|
||
fprintf_filtered (file,
|
||
_("Controlling the inferior in "
|
||
"asynchronous mode is %s.\n"), value);
|
||
}
|
||
|
||
/* Return true if the target operates in non-stop mode even with "set
|
||
non-stop off". */
|
||
|
||
static int
|
||
target_always_non_stop_p (void)
|
||
{
|
||
return target_stack->always_non_stop_p ();
|
||
}
|
||
|
||
/* See target.h. */
|
||
|
||
int
|
||
target_is_non_stop_p (void)
|
||
{
|
||
return (non_stop
|
||
|| target_non_stop_enabled == AUTO_BOOLEAN_TRUE
|
||
|| (target_non_stop_enabled == AUTO_BOOLEAN_AUTO
|
||
&& target_always_non_stop_p ()));
|
||
}
|
||
|
||
/* Controls if targets can report that they always run in non-stop
|
||
mode. This is just for maintainers to use when debugging gdb. */
|
||
enum auto_boolean target_non_stop_enabled = AUTO_BOOLEAN_AUTO;
|
||
|
||
/* The set command writes to this variable. If the inferior is
|
||
executing, target_non_stop_enabled is *not* updated. */
|
||
static enum auto_boolean target_non_stop_enabled_1 = AUTO_BOOLEAN_AUTO;
|
||
|
||
/* Implementation of "maint set target-non-stop". */
|
||
|
||
static void
|
||
maint_set_target_non_stop_command (const char *args, int from_tty,
|
||
struct cmd_list_element *c)
|
||
{
|
||
if (have_live_inferiors ())
|
||
{
|
||
target_non_stop_enabled_1 = target_non_stop_enabled;
|
||
error (_("Cannot change this setting while the inferior is running."));
|
||
}
|
||
|
||
target_non_stop_enabled = target_non_stop_enabled_1;
|
||
}
|
||
|
||
/* Implementation of "maint show target-non-stop". */
|
||
|
||
static void
|
||
maint_show_target_non_stop_command (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c,
|
||
const char *value)
|
||
{
|
||
if (target_non_stop_enabled == AUTO_BOOLEAN_AUTO)
|
||
fprintf_filtered (file,
|
||
_("Whether the target is always in non-stop mode "
|
||
"is %s (currently %s).\n"), value,
|
||
target_always_non_stop_p () ? "on" : "off");
|
||
else
|
||
fprintf_filtered (file,
|
||
_("Whether the target is always in non-stop mode "
|
||
"is %s.\n"), value);
|
||
}
|
||
|
||
/* Temporary copies of permission settings. */
|
||
|
||
static int may_write_registers_1 = 1;
|
||
static int may_write_memory_1 = 1;
|
||
static int may_insert_breakpoints_1 = 1;
|
||
static int may_insert_tracepoints_1 = 1;
|
||
static int may_insert_fast_tracepoints_1 = 1;
|
||
static int may_stop_1 = 1;
|
||
|
||
/* Make the user-set values match the real values again. */
|
||
|
||
void
|
||
update_target_permissions (void)
|
||
{
|
||
may_write_registers_1 = may_write_registers;
|
||
may_write_memory_1 = may_write_memory;
|
||
may_insert_breakpoints_1 = may_insert_breakpoints;
|
||
may_insert_tracepoints_1 = may_insert_tracepoints;
|
||
may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints;
|
||
may_stop_1 = may_stop;
|
||
}
|
||
|
||
/* The one function handles (most of) the permission flags in the same
|
||
way. */
|
||
|
||
static void
|
||
set_target_permissions (const char *args, int from_tty,
|
||
struct cmd_list_element *c)
|
||
{
|
||
if (target_has_execution)
|
||
{
|
||
update_target_permissions ();
|
||
error (_("Cannot change this setting while the inferior is running."));
|
||
}
|
||
|
||
/* Make the real values match the user-changed values. */
|
||
may_write_registers = may_write_registers_1;
|
||
may_insert_breakpoints = may_insert_breakpoints_1;
|
||
may_insert_tracepoints = may_insert_tracepoints_1;
|
||
may_insert_fast_tracepoints = may_insert_fast_tracepoints_1;
|
||
may_stop = may_stop_1;
|
||
update_observer_mode ();
|
||
}
|
||
|
||
/* Set memory write permission independently of observer mode. */
|
||
|
||
static void
|
||
set_write_memory_permission (const char *args, int from_tty,
|
||
struct cmd_list_element *c)
|
||
{
|
||
/* Make the real values match the user-changed values. */
|
||
may_write_memory = may_write_memory_1;
|
||
update_observer_mode ();
|
||
}
|
||
|
||
void
|
||
initialize_targets (void)
|
||
{
|
||
the_dummy_target = new dummy_target ();
|
||
push_target (the_dummy_target);
|
||
|
||
the_debug_target = new debug_target ();
|
||
|
||
add_info ("target", info_target_command, targ_desc);
|
||
add_info ("files", info_target_command, targ_desc);
|
||
|
||
add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\
|
||
Set target debugging."), _("\
|
||
Show target debugging."), _("\
|
||
When non-zero, target debugging is enabled. Higher numbers are more\n\
|
||
verbose."),
|
||
set_targetdebug,
|
||
show_targetdebug,
|
||
&setdebuglist, &showdebuglist);
|
||
|
||
add_setshow_boolean_cmd ("trust-readonly-sections", class_support,
|
||
&trust_readonly, _("\
|
||
Set mode for reading from readonly sections."), _("\
|
||
Show mode for reading from readonly sections."), _("\
|
||
When this mode is on, memory reads from readonly sections (such as .text)\n\
|
||
will be read from the object file instead of from the target. This will\n\
|
||
result in significant performance improvement for remote targets."),
|
||
NULL,
|
||
show_trust_readonly,
|
||
&setlist, &showlist);
|
||
|
||
add_com ("monitor", class_obscure, do_monitor_command,
|
||
_("Send a command to the remote monitor (remote targets only)."));
|
||
|
||
add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack,
|
||
_("Print the name of each layer of the internal target stack."),
|
||
&maintenanceprintlist);
|
||
|
||
add_setshow_boolean_cmd ("target-async", no_class,
|
||
&target_async_permitted_1, _("\
|
||
Set whether gdb controls the inferior in asynchronous mode."), _("\
|
||
Show whether gdb controls the inferior in asynchronous mode."), _("\
|
||
Tells gdb whether to control the inferior in asynchronous mode."),
|
||
maint_set_target_async_command,
|
||
maint_show_target_async_command,
|
||
&maintenance_set_cmdlist,
|
||
&maintenance_show_cmdlist);
|
||
|
||
add_setshow_auto_boolean_cmd ("target-non-stop", no_class,
|
||
&target_non_stop_enabled_1, _("\
|
||
Set whether gdb always controls the inferior in non-stop mode."), _("\
|
||
Show whether gdb always controls the inferior in non-stop mode."), _("\
|
||
Tells gdb whether to control the inferior in non-stop mode."),
|
||
maint_set_target_non_stop_command,
|
||
maint_show_target_non_stop_command,
|
||
&maintenance_set_cmdlist,
|
||
&maintenance_show_cmdlist);
|
||
|
||
add_setshow_boolean_cmd ("may-write-registers", class_support,
|
||
&may_write_registers_1, _("\
|
||
Set permission to write into registers."), _("\
|
||
Show permission to write into registers."), _("\
|
||
When this permission is on, GDB may write into the target's registers.\n\
|
||
Otherwise, any sort of write attempt will result in an error."),
|
||
set_target_permissions, NULL,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("may-write-memory", class_support,
|
||
&may_write_memory_1, _("\
|
||
Set permission to write into target memory."), _("\
|
||
Show permission to write into target memory."), _("\
|
||
When this permission is on, GDB may write into the target's memory.\n\
|
||
Otherwise, any sort of write attempt will result in an error."),
|
||
set_write_memory_permission, NULL,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("may-insert-breakpoints", class_support,
|
||
&may_insert_breakpoints_1, _("\
|
||
Set permission to insert breakpoints in the target."), _("\
|
||
Show permission to insert breakpoints in the target."), _("\
|
||
When this permission is on, GDB may insert breakpoints in the program.\n\
|
||
Otherwise, any sort of insertion attempt will result in an error."),
|
||
set_target_permissions, NULL,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("may-insert-tracepoints", class_support,
|
||
&may_insert_tracepoints_1, _("\
|
||
Set permission to insert tracepoints in the target."), _("\
|
||
Show permission to insert tracepoints in the target."), _("\
|
||
When this permission is on, GDB may insert tracepoints in the program.\n\
|
||
Otherwise, any sort of insertion attempt will result in an error."),
|
||
set_target_permissions, NULL,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support,
|
||
&may_insert_fast_tracepoints_1, _("\
|
||
Set permission to insert fast tracepoints in the target."), _("\
|
||
Show permission to insert fast tracepoints in the target."), _("\
|
||
When this permission is on, GDB may insert fast tracepoints.\n\
|
||
Otherwise, any sort of insertion attempt will result in an error."),
|
||
set_target_permissions, NULL,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("may-interrupt", class_support,
|
||
&may_stop_1, _("\
|
||
Set permission to interrupt or signal the target."), _("\
|
||
Show permission to interrupt or signal the target."), _("\
|
||
When this permission is on, GDB may interrupt/stop the target's execution.\n\
|
||
Otherwise, any attempt to interrupt or stop will be ignored."),
|
||
set_target_permissions, NULL,
|
||
&setlist, &showlist);
|
||
|
||
add_com ("flash-erase", no_class, flash_erase_command,
|
||
_("Erase all flash memory regions."));
|
||
|
||
add_setshow_boolean_cmd ("auto-connect-native-target", class_support,
|
||
&auto_connect_native_target, _("\
|
||
Set whether GDB may automatically connect to the native target."), _("\
|
||
Show whether GDB may automatically connect to the native target."), _("\
|
||
When on, and GDB is not connected to a target yet, GDB\n\
|
||
attempts \"run\" and other commands with the native target."),
|
||
NULL, show_auto_connect_native_target,
|
||
&setlist, &showlist);
|
||
}
|