binutils-gdb/gdb/nat/aarch64-linux.c

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/* Copyright (C) 2009-2016 Free Software Foundation, Inc.
Contributed by ARM Ltd.
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 "common-defs.h"
#include "break-common.h"
#include "nat/linux-nat.h"
#include "nat/aarch64-linux-hw-point.h"
#include "nat/aarch64-linux.h"
aarch64 multi-arch (part 3): get thread area With the kernle fix <http://lists.infradead.org/pipermail/linux-arm-kernel/2015-July/356511.html>, aarch64 GDB is able to read the base of thread area of 32-bit arm program through NT_ARM_TLS. This patch is to teach both GDB and GDBserver to read the base of thread area correctly in the multi-arch case. A new function aarch64_ps_get_thread_area is added, and is shared between GDB and GDBserver. With this patch applied, the following fails in multi-arch testing (GDB is aarch64 but the test cases are arm) are fixed, -FAIL: gdb.threads/tls-nodebug.exp: thread local storage -FAIL: gdb.threads/tls-shared.exp: print thread local storage variable -FAIL: gdb.threads/tls-so_extern.exp: print thread local storage variable -FAIL: gdb.threads/tls-var.exp: print tls_var -FAIL: gdb.threads/tls.exp: first thread local storage -FAIL: gdb.threads/tls.exp: first another thread local storage -FAIL: gdb.threads/tls.exp: p a_thread_local -FAIL: gdb.threads/tls.exp: p file2_thread_local -FAIL: gdb.threads/tls.exp: p a_thread_local second time gdb: 2015-09-18 Yao Qi <yao.qi@linaro.org> * nat/aarch64-linux.c: Include elf/common.h, nat/gdb_ptrace.h, asm/ptrace.h and sys/uio.h. (aarch64_ps_get_thread_area): New function. * nat/aarch64-linux.h: Include gdb_proc_service.h. (aarch64_ps_get_thread_area): Declare. * aarch64-linux-nat.c (ps_get_thread_area): Call aarch64_ps_get_thread_area. gdb/gdbserver: 2015-09-18 Yao Qi <yao.qi@linaro.org> * linux-aarch64-low.c: Don't include sys/uio.h. (ps_get_thread_area): Call aarch64_ps_get_thread_area.
2015-09-18 14:59:42 +02:00
#include "elf/common.h"
#include "nat/gdb_ptrace.h"
#include <asm/ptrace.h>
#include <sys/uio.h>
/* Called when resuming a thread LWP.
The hardware debug registers are updated when there is any change. */
void
aarch64_linux_prepare_to_resume (struct lwp_info *lwp)
{
struct arch_lwp_info *info = lwp_arch_private_info (lwp);
/* NULL means this is the main thread still going through the shell,
or, no watchpoint has been set yet. In that case, there's
nothing to do. */
if (info == NULL)
return;
if (DR_HAS_CHANGED (info->dr_changed_bp)
|| DR_HAS_CHANGED (info->dr_changed_wp))
{
ptid_t ptid = ptid_of_lwp (lwp);
int tid = ptid_get_lwp (ptid);
struct aarch64_debug_reg_state *state
= aarch64_get_debug_reg_state (ptid_get_pid (ptid));
if (show_debug_regs)
debug_printf ("prepare_to_resume thread %d\n", tid);
/* Watchpoints. */
if (DR_HAS_CHANGED (info->dr_changed_wp))
{
aarch64_linux_set_debug_regs (state, tid, 1);
DR_CLEAR_CHANGED (info->dr_changed_wp);
}
/* Breakpoints. */
if (DR_HAS_CHANGED (info->dr_changed_bp))
{
aarch64_linux_set_debug_regs (state, tid, 0);
DR_CLEAR_CHANGED (info->dr_changed_bp);
}
}
}
/* Function to call when a new thread is detected. */
void
aarch64_linux_new_thread (struct lwp_info *lwp)
{
Replace some xmalloc-family functions with XNEW-family ones This patch is part of the make-gdb-buildable-in-C++ effort. The idea is to change some calls to the xmalloc family of functions to calls to the equivalents in the XNEW family. This avoids adding an explicit cast, so it keeps the code a bit more readable. Some of them also map relatively well to a C++ equivalent (XNEW (struct foo) -> new foo), so it will be possible to do scripted replacements if needed. I only changed calls that were obviously allocating memory for one or multiple "objects". Allocation of variable sizes (such as strings or buffer handling) will be for later (and won't use XNEW). - xmalloc (sizeof (struct foo)) -> XNEW (struct foo) - xmalloc (num * sizeof (struct foo)) -> XNEWVEC (struct foo, num) - xcalloc (1, sizeof (struct foo)) -> XCNEW (struct foo) - xcalloc (num, sizeof (struct foo)) -> XCNEWVEC (struct foo, num) - xrealloc (p, num * sizeof (struct foo) -> XRESIZEVEC (struct foo, p, num) - obstack_alloc (ob, sizeof (struct foo)) -> XOBNEW (ob, struct foo) - obstack_alloc (ob, num * sizeof (struct foo)) -> XOBNEWVEC (ob, struct foo, num) - alloca (sizeof (struct foo)) -> XALLOCA (struct foo) - alloca (num * sizeof (struct foo)) -> XALLOCAVEC (struct foo, num) Some instances of xmalloc followed by memset to zero the buffer were replaced by XCNEW or XCNEWVEC. I regtested on x86-64, Ubuntu 14.04, but the patch touches many architecture-specific files. For those I'll have to rely on the buildbot or people complaining that I broke their gdb. gdb/ChangeLog: * aarch64-linux-nat.c (aarch64_add_process): Likewise. * aarch64-tdep.c (aarch64_gdbarch_init): Likewise. * ada-exp.y (write_ambiguous_var): Likewise. * ada-lang.c (resolve_subexp): Likewise. (user_select_syms): Likewise. (assign_aggregate): Likewise. (ada_evaluate_subexp): Likewise. (cache_symbol): Likewise. * addrmap.c (allocate_key): Likewise. (addrmap_create_mutable): Likewise. * aix-thread.c (sync_threadlists): Likewise. * alpha-tdep.c (alpha_push_dummy_call): Likewise. (alpha_gdbarch_init): Likewise. * amd64-windows-tdep.c (amd64_windows_push_arguments): Likewise. * arm-linux-nat.c (arm_linux_add_process): Likewise. * arm-linux-tdep.c (arm_linux_displaced_step_copy_insn): Likewise. * arm-tdep.c (push_stack_item): Likewise. (arm_displaced_step_copy_insn): Likewise. (arm_gdbarch_init): Likewise. (_initialize_arm_tdep): Likewise. * avr-tdep.c (push_stack_item): Likewise. * ax-general.c (new_agent_expr): Likewise. * block.c (block_initialize_namespace): Likewise. * breakpoint.c (alloc_counted_command_line): Likewise. (update_dprintf_command_list): Likewise. (parse_breakpoint_sals): Likewise. (decode_static_tracepoint_spec): Likewise. (until_break_command): Likewise. (clear_command): Likewise. (update_global_location_list): Likewise. (get_breakpoint_objfile_data) Likewise. * btrace.c (ftrace_new_function): Likewise. (btrace_set_insn_history): Likewise. (btrace_set_call_history): Likewise. * buildsym.c (add_symbol_to_list): Likewise. (record_pending_block): Likewise. (start_subfile): Likewise. (start_buildsym_compunit): Likewise. (push_subfile): Likewise. (end_symtab_get_static_block): Likewise. (buildsym_init): Likewise. * cli/cli-cmds.c (source_command): Likewise. * cli/cli-decode.c (add_cmd): Likewise. * cli/cli-script.c (build_command_line): Likewise. (setup_user_args): Likewise. (realloc_body_list): Likewise. (process_next_line): Likewise. (copy_command_lines): Likewise. * cli/cli-setshow.c (do_set_command): Likewise. * coff-pe-read.c (read_pe_exported_syms): Likewise. * coffread.c (coff_locate_sections): Likewise. (coff_symtab_read): Likewise. (coff_read_struct_type): Likewise. * common/cleanups.c (make_my_cleanup2): Likewise. * common/common-exceptions.c (throw_it): Likewise. * common/filestuff.c (make_cleanup_close): Likewise. * common/format.c (parse_format_string): Likewise. * common/queue.h (DEFINE_QUEUE_P): Likewise. * compile/compile-object-load.c (munmap_list_add): Likewise. (compile_object_load): Likewise. * compile/compile-object-run.c (compile_object_run): Likewise. * compile/compile.c (append_args): Likewise. * corefile.c (specify_exec_file_hook): Likewise. * cp-support.c (make_symbol_overload_list): Likewise. * cris-tdep.c (push_stack_item): Likewise. (cris_gdbarch_init): Likewise. * ctf.c (ctf_trace_file_writer_new): Likewise. * dbxread.c (init_header_files): Likewise. (add_new_header_file): Likewise. (init_bincl_list): Likewise. (dbx_end_psymtab): Likewise. (start_psymtab): Likewise. (dbx_end_psymtab): Likewise. * dcache.c (dcache_init): Likewise. * dictionary.c (dict_create_hashed): Likewise. (dict_create_hashed_expandable): Likewise. (dict_create_linear): Likewise. (dict_create_linear_expandable): Likewise. * dtrace-probe.c (dtrace_process_dof_probe): Likewise. * dummy-frame.c (register_dummy_frame_dtor): Likewise. * dwarf2-frame-tailcall.c (cache_new_ref1): Likewise. * dwarf2-frame.c (dwarf2_build_frame_info): Likewise. (decode_frame_entry_1): Likewise. * dwarf2expr.c (new_dwarf_expr_context): Likewise. * dwarf2loc.c (dwarf2_compile_expr_to_ax): Likewise. * dwarf2read.c (dwarf2_has_info): Likewise. (create_signatured_type_table_from_index): Likewise. (dwarf2_read_index): Likewise. (dw2_get_file_names_reader): Likewise. (create_all_type_units): Likewise. (read_cutu_die_from_dwo): Likewise. (init_tu_and_read_dwo_dies): Likewise. (init_cutu_and_read_dies): Likewise. (create_all_comp_units): Likewise. (queue_comp_unit): Likewise. (inherit_abstract_dies): Likewise. (read_call_site_scope): Likewise. (dwarf2_add_field): Likewise. (dwarf2_add_typedef): Likewise. (dwarf2_add_member_fn): Likewise. (attr_to_dynamic_prop): Likewise. (abbrev_table_alloc_abbrev): Likewise. (abbrev_table_read_table): Likewise. (add_include_dir): Likewise. (add_file_name): Likewise. (dwarf_decode_line_header): Likewise. (dwarf2_const_value_attr): Likewise. (dwarf_alloc_block): Likewise. (parse_macro_definition): Likewise. (set_die_type): Likewise. (write_psymtabs_to_index): Likewise. (create_cus_from_index): Likewise. (dwarf2_create_include_psymtab): Likewise. (process_psymtab_comp_unit_reader): Likewise. (build_type_psymtab_dependencies): Likewise. (read_comp_units_from_section): Likewise. (compute_compunit_symtab_includes): Likewise. (create_dwo_unit_in_dwp_v1): Likewise. (create_dwo_unit_in_dwp_v2): Likewise. (read_func_scope): Likewise. (process_structure_scope): Likewise. (mark_common_block_symbol_computed): Likewise. (load_partial_dies): Likewise. (dwarf2_symbol_mark_computed): Likewise. * elfread.c (elf_symfile_segments): Likewise. (elf_read_minimal_symbols): Likewise. * environ.c (make_environ): Likewise. * eval.c (evaluate_subexp_standard): Likewise. * event-loop.c (create_file_handler): Likewise. (create_async_signal_handler): Likewise. (create_async_event_handler): Likewise. (create_timer): Likewise. * exec.c (build_section_table): Likewise. * fbsd-nat.c (fbsd_remember_child): Likewise. * fork-child.c (fork_inferior): Likewise. * frv-tdep.c (new_variant): Likewise. * gdbarch.sh (gdbarch_alloc): Likewise. (append_name): Likewise. * gdbtypes.c (rank_function): Likewise. (copy_type_recursive): Likewise. (add_dyn_prop): Likewise. * gnu-nat.c (make_proc): Likewise. (make_inf): Likewise. (gnu_write_inferior): Likewise. * gnu-v3-abi.c (build_gdb_vtable_type): Likewise. (build_std_type_info_type): Likewise. * guile/scm-param.c (compute_enum_list): Likewise. * guile/scm-utils.c (gdbscm_parse_function_args): Likewise. * guile/scm-value.c (gdbscm_value_call): Likewise. * h8300-tdep.c (h8300_gdbarch_init): Likewise. * hppa-tdep.c (hppa_init_objfile_priv_data): Likewise. (read_unwind_info): Likewise. * ia64-tdep.c (ia64_gdbarch_init): Likewise. * infcall.c (dummy_frame_context_saver_setup): Likewise. (call_function_by_hand_dummy): Likewise. * infcmd.c (step_once): Likewise. (finish_forward): Likewise. (attach_command): Likewise. (notice_new_inferior): Likewise. * inferior.c (add_inferior_silent): Likewise. * infrun.c (add_displaced_stepping_state): Likewise. (save_infcall_control_state): Likewise. (save_inferior_ptid): Likewise. (_initialize_infrun): Likewise. * jit.c (bfd_open_from_target_memory): Likewise. (jit_gdbarch_data_init): Likewise. * language.c (add_language): Likewise. * linespec.c (decode_line_2): Likewise. * linux-nat.c (add_to_pid_list): Likewise. (add_initial_lwp): Likewise. * linux-thread-db.c (add_thread_db_info): Likewise. (record_thread): Likewise. (info_auto_load_libthread_db): Likewise. * m32c-tdep.c (m32c_gdbarch_init): Likewise. * m68hc11-tdep.c (m68hc11_gdbarch_init): Likewise. * m68k-tdep.c (m68k_gdbarch_init): Likewise. * m88k-tdep.c (m88k_analyze_prologue): Likewise. * macrocmd.c (macro_define_command): Likewise. * macroexp.c (gather_arguments): Likewise. * macroscope.c (sal_macro_scope): Likewise. * macrotab.c (new_macro_table): Likewise. * mdebugread.c (push_parse_stack): Likewise. (parse_partial_symbols): Likewise. (parse_symbol): Likewise. (psymtab_to_symtab_1): Likewise. (new_block): Likewise. (new_psymtab): Likewise. (mdebug_build_psymtabs): Likewise. (add_pending): Likewise. (elfmdebug_build_psymtabs): Likewise. * mep-tdep.c (mep_gdbarch_init): Likewise. * mi/mi-main.c (mi_execute_command): Likewise. * mi/mi-parse.c (mi_parse_argv): Likewise. * minidebug.c (lzma_open): Likewise. * minsyms.c (terminate_minimal_symbol_table): Likewise. * mips-linux-nat.c (mips_linux_insert_watchpoint): Likewise. * mips-tdep.c (mips_gdbarch_init): Likewise. * mn10300-tdep.c (mn10300_gdbarch_init): Likewise. * msp430-tdep.c (msp430_gdbarch_init): Likewise. * mt-tdep.c (mt_registers_info): Likewise. * nat/aarch64-linux.c (aarch64_linux_new_thread): Likewise. * nat/linux-btrace.c (linux_enable_bts): Likewise. (linux_enable_pt): Likewise. * nat/linux-osdata.c (linux_xfer_osdata_processes): Likewise. (linux_xfer_osdata_processgroups): Likewise. * nios2-tdep.c (nios2_gdbarch_init): Likewise. * nto-procfs.c (procfs_meminfo): Likewise. * objc-lang.c (start_msglist): Likewise. (selectors_info): Likewise. (classes_info): Likewise. (find_methods): Likewise. * objfiles.c (allocate_objfile): Likewise. (update_section_map): Likewise. * osabi.c (gdbarch_register_osabi): Likewise. (gdbarch_register_osabi_sniffer): Likewise. * parse.c (start_arglist): Likewise. * ppc-linux-nat.c (hwdebug_find_thread_points_by_tid): Likewise. (hwdebug_insert_point): Likewise. * printcmd.c (display_command): Likewise. (ui_printf): Likewise. * procfs.c (create_procinfo): Likewise. (load_syscalls): Likewise. (proc_get_LDT_entry): Likewise. (proc_update_threads): Likewise. * prologue-value.c (make_pv_area): Likewise. (pv_area_store): Likewise. * psymtab.c (extend_psymbol_list): Likewise. (init_psymbol_list): Likewise. (allocate_psymtab): Likewise. * python/py-inferior.c (add_thread_object): Likewise. * python/py-param.c (compute_enum_values): Likewise. * python/py-value.c (valpy_call): Likewise. * python/py-varobj.c (py_varobj_iter_next): Likewise. * python/python.c (ensure_python_env): Likewise. * record-btrace.c (record_btrace_start_replaying): Likewise. * record-full.c (record_full_reg_alloc): Likewise. (record_full_mem_alloc): Likewise. (record_full_end_alloc): Likewise. (record_full_core_xfer_partial): Likewise. * regcache.c (get_thread_arch_aspace_regcache): Likewise. * remote-fileio.c (remote_fileio_init_fd_map): Likewise. * remote-notif.c (remote_notif_state_allocate): Likewise. * remote.c (demand_private_info): Likewise. (remote_notif_stop_alloc_reply): Likewise. (remote_enable_btrace): Likewise. * reverse.c (save_bookmark_command): Likewise. * rl78-tdep.c (rl78_gdbarch_init): Likewise. * rx-tdep.c (rx_gdbarch_init): Likewise. * s390-linux-nat.c (s390_insert_watchpoint): Likewise. * ser-go32.c (dos_get_tty_state): Likewise. (dos_copy_tty_state): Likewise. * ser-mingw.c (ser_windows_open): Likewise. (ser_console_wait_handle): Likewise. (ser_console_get_tty_state): Likewise. (make_pipe_state): Likewise. (net_windows_open): Likewise. * ser-unix.c (hardwire_get_tty_state): Likewise. (hardwire_copy_tty_state): Likewise. * solib-aix.c (solib_aix_new_lm_info): Likewise. * solib-dsbt.c (dsbt_current_sos): Likewise. (dsbt_relocate_main_executable): Likewise. * solib-frv.c (frv_current_sos): Likewise. (frv_relocate_main_executable): Likewise. * solib-spu.c (spu_bfd_fopen): Likewise. * solib-svr4.c (lm_info_read): Likewise. (svr4_copy_library_list): Likewise. (svr4_default_sos): Likewise. * source.c (find_source_lines): Likewise. (line_info): Likewise. (add_substitute_path_rule): Likewise. * spu-linux-nat.c (spu_bfd_open): Likewise. * spu-tdep.c (info_spu_dma_cmdlist): Likewise. * stabsread.c (dbx_lookup_type): Likewise. (read_type): Likewise. (read_member_functions): Likewise. (read_struct_fields): Likewise. (read_baseclasses): Likewise. (read_args): Likewise. (_initialize_stabsread): Likewise. * stack.c (func_command): Likewise. * stap-probe.c (handle_stap_probe): Likewise. * symfile.c (addrs_section_sort): Likewise. (addr_info_make_relative): Likewise. (load_section_callback): Likewise. (add_symbol_file_command): Likewise. (init_filename_language_table): Likewise. * symtab.c (create_filename_seen_cache): Likewise. (sort_search_symbols_remove_dups): Likewise. (search_symbols): Likewise. * target.c (make_cleanup_restore_target_terminal): Likewise. * thread.c (new_thread): Likewise. (enable_thread_stack_temporaries): Likewise. (make_cleanup_restore_current_thread): Likewise. (thread_apply_all_command): Likewise. * tic6x-tdep.c (tic6x_gdbarch_init): Likewise. * top.c (gdb_readline_wrapper): Likewise. * tracefile-tfile.c (tfile_trace_file_writer_new): Likewise. * tracepoint.c (trace_find_line_command): Likewise. (all_tracepoint_actions_and_cleanup): Likewise. (make_cleanup_restore_current_traceframe): Likewise. (get_uploaded_tp): Likewise. (get_uploaded_tsv): Likewise. * tui/tui-data.c (tui_alloc_generic_win_info): Likewise. (tui_alloc_win_info): Likewise. (tui_alloc_content): Likewise. (tui_add_content_elements): Likewise. * tui/tui-disasm.c (tui_find_disassembly_address): Likewise. (tui_set_disassem_content): Likewise. * ui-file.c (ui_file_new): Likewise. (stdio_file_new): Likewise. (tee_file_new): Likewise. * utils.c (make_cleanup_restore_integer): Likewise. (add_internal_problem_command): Likewise. * v850-tdep.c (v850_gdbarch_init): Likewise. * valops.c (find_oload_champ): Likewise. * value.c (allocate_value_lazy): Likewise. (record_latest_value): Likewise. (create_internalvar): Likewise. * varobj.c (install_variable): Likewise. (new_variable): Likewise. (new_root_variable): Likewise. (cppush): Likewise. (_initialize_varobj): Likewise. * windows-nat.c (windows_make_so): Likewise. * x86-nat.c (x86_add_process): Likewise. * xcoffread.c (arrange_linetable): Likewise. (allocate_include_entry): Likewise. (process_linenos): Likewise. (SYMBOL_DUP): Likewise. (xcoff_start_psymtab): Likewise. (xcoff_end_psymtab): Likewise. * xml-support.c (gdb_xml_parse_attr_ulongest): Likewise. * xtensa-tdep.c (xtensa_register_type): Likewise. * gdbarch.c: Regenerate. * gdbarch.h: Regenerate. gdb/gdbserver/ChangeLog: * ax.c (gdb_parse_agent_expr): Likewise. (compile_bytecodes): Likewise. * dll.c (loaded_dll): Likewise. * event-loop.c (append_callback_event): Likewise. (create_file_handler): Likewise. (create_file_event): Likewise. * hostio.c (handle_open): Likewise. * inferiors.c (add_thread): Likewise. (add_process): Likewise. * linux-aarch64-low.c (aarch64_linux_new_process): Likewise. * linux-arm-low.c (arm_new_process): Likewise. (arm_new_thread): Likewise. * linux-low.c (add_to_pid_list): Likewise. (linux_add_process): Likewise. (handle_extended_wait): Likewise. (add_lwp): Likewise. (enqueue_one_deferred_signal): Likewise. (enqueue_pending_signal): Likewise. (linux_resume_one_lwp_throw): Likewise. (linux_resume_one_thread): Likewise. (linux_read_memory): Likewise. (linux_write_memory): Likewise. * linux-mips-low.c (mips_linux_new_process): Likewise. (mips_linux_new_thread): Likewise. (mips_add_watchpoint): Likewise. * linux-x86-low.c (initialize_low_arch): Likewise. * lynx-low.c (lynx_add_process): Likewise. * mem-break.c (set_raw_breakpoint_at): Likewise. (set_breakpoint): Likewise. (add_condition_to_breakpoint): Likewise. (add_commands_to_breakpoint): Likewise. (clone_agent_expr): Likewise. (clone_one_breakpoint): Likewise. * regcache.c (new_register_cache): Likewise. * remote-utils.c (look_up_one_symbol): Likewise. * server.c (queue_stop_reply): Likewise. (start_inferior): Likewise. (queue_stop_reply_callback): Likewise. (handle_target_event): Likewise. * spu-low.c (fetch_ppc_memory): Likewise. (store_ppc_memory): Likewise. * target.c (set_target_ops): Likewise. * thread-db.c (thread_db_load_search): Likewise. (try_thread_db_load_1): Likewise. * tracepoint.c (add_tracepoint): Likewise. (add_tracepoint_action): Likewise. (create_trace_state_variable): Likewise. (cmd_qtdpsrc): Likewise. (cmd_qtro): Likewise. (add_while_stepping_state): Likewise. * win32-low.c (child_add_thread): Likewise. (get_image_name): Likewise.
2015-08-26 23:16:07 +02:00
struct arch_lwp_info *info = XNEW (struct arch_lwp_info);
/* Mark that all the hardware breakpoint/watchpoint register pairs
for this thread need to be initialized (with data from
aarch_process_info.debug_reg_state). */
DR_MARK_ALL_CHANGED (info->dr_changed_bp, aarch64_num_bp_regs);
DR_MARK_ALL_CHANGED (info->dr_changed_wp, aarch64_num_wp_regs);
lwp_set_arch_private_info (lwp, info);
}
/* Convert native siginfo FROM to the siginfo in the layout of the
inferior's architecture TO. */
void
aarch64_compat_siginfo_from_siginfo (compat_siginfo_t *to, siginfo_t *from)
{
memset (to, 0, sizeof (*to));
to->si_signo = from->si_signo;
to->si_errno = from->si_errno;
to->si_code = from->si_code;
if (to->si_code == SI_TIMER)
{
to->cpt_si_timerid = from->si_timerid;
to->cpt_si_overrun = from->si_overrun;
to->cpt_si_ptr = (intptr_t) from->si_ptr;
}
else if (to->si_code == SI_USER)
{
to->cpt_si_pid = from->si_pid;
to->cpt_si_uid = from->si_uid;
}
else if (to->si_code < 0)
{
to->cpt_si_pid = from->si_pid;
to->cpt_si_uid = from->si_uid;
to->cpt_si_ptr = (intptr_t) from->si_ptr;
}
else
{
switch (to->si_signo)
{
case SIGCHLD:
to->cpt_si_pid = from->si_pid;
to->cpt_si_uid = from->si_uid;
to->cpt_si_status = from->si_status;
to->cpt_si_utime = from->si_utime;
to->cpt_si_stime = from->si_stime;
break;
case SIGILL:
case SIGFPE:
case SIGSEGV:
case SIGBUS:
to->cpt_si_addr = (intptr_t) from->si_addr;
break;
case SIGPOLL:
to->cpt_si_band = from->si_band;
to->cpt_si_fd = from->si_fd;
break;
default:
to->cpt_si_pid = from->si_pid;
to->cpt_si_uid = from->si_uid;
to->cpt_si_ptr = (intptr_t) from->si_ptr;
break;
}
}
}
/* Convert inferior's architecture siginfo FROM to native siginfo TO. */
void
aarch64_siginfo_from_compat_siginfo (siginfo_t *to, compat_siginfo_t *from)
{
memset (to, 0, sizeof (*to));
to->si_signo = from->si_signo;
to->si_errno = from->si_errno;
to->si_code = from->si_code;
if (to->si_code == SI_TIMER)
{
to->si_timerid = from->cpt_si_timerid;
to->si_overrun = from->cpt_si_overrun;
to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr;
}
else if (to->si_code == SI_USER)
{
to->si_pid = from->cpt_si_pid;
to->si_uid = from->cpt_si_uid;
}
if (to->si_code < 0)
{
to->si_pid = from->cpt_si_pid;
to->si_uid = from->cpt_si_uid;
to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr;
}
else
{
switch (to->si_signo)
{
case SIGCHLD:
to->si_pid = from->cpt_si_pid;
to->si_uid = from->cpt_si_uid;
to->si_status = from->cpt_si_status;
to->si_utime = from->cpt_si_utime;
to->si_stime = from->cpt_si_stime;
break;
case SIGILL:
case SIGFPE:
case SIGSEGV:
case SIGBUS:
to->si_addr = (void *) (intptr_t) from->cpt_si_addr;
break;
case SIGPOLL:
to->si_band = from->cpt_si_band;
to->si_fd = from->cpt_si_fd;
break;
default:
to->si_pid = from->cpt_si_pid;
to->si_uid = from->cpt_si_uid;
to->si_ptr = (void* ) (intptr_t) from->cpt_si_ptr;
break;
}
}
}
aarch64 multi-arch (part 3): get thread area With the kernle fix <http://lists.infradead.org/pipermail/linux-arm-kernel/2015-July/356511.html>, aarch64 GDB is able to read the base of thread area of 32-bit arm program through NT_ARM_TLS. This patch is to teach both GDB and GDBserver to read the base of thread area correctly in the multi-arch case. A new function aarch64_ps_get_thread_area is added, and is shared between GDB and GDBserver. With this patch applied, the following fails in multi-arch testing (GDB is aarch64 but the test cases are arm) are fixed, -FAIL: gdb.threads/tls-nodebug.exp: thread local storage -FAIL: gdb.threads/tls-shared.exp: print thread local storage variable -FAIL: gdb.threads/tls-so_extern.exp: print thread local storage variable -FAIL: gdb.threads/tls-var.exp: print tls_var -FAIL: gdb.threads/tls.exp: first thread local storage -FAIL: gdb.threads/tls.exp: first another thread local storage -FAIL: gdb.threads/tls.exp: p a_thread_local -FAIL: gdb.threads/tls.exp: p file2_thread_local -FAIL: gdb.threads/tls.exp: p a_thread_local second time gdb: 2015-09-18 Yao Qi <yao.qi@linaro.org> * nat/aarch64-linux.c: Include elf/common.h, nat/gdb_ptrace.h, asm/ptrace.h and sys/uio.h. (aarch64_ps_get_thread_area): New function. * nat/aarch64-linux.h: Include gdb_proc_service.h. (aarch64_ps_get_thread_area): Declare. * aarch64-linux-nat.c (ps_get_thread_area): Call aarch64_ps_get_thread_area. gdb/gdbserver: 2015-09-18 Yao Qi <yao.qi@linaro.org> * linux-aarch64-low.c: Don't include sys/uio.h. (ps_get_thread_area): Call aarch64_ps_get_thread_area.
2015-09-18 14:59:42 +02:00
/* Called by libthread_db. Returns a pointer to the thread local
storage (or its descriptor). */
ps_err_e
aarch64_ps_get_thread_area (const struct ps_prochandle *ph,
lwpid_t lwpid, int idx, void **base,
int is_64bit_p)
{
struct iovec iovec;
uint64_t reg64;
uint32_t reg32;
if (is_64bit_p)
{
iovec.iov_base = &reg64;
iovec.iov_len = sizeof (reg64);
}
else
{
iovec.iov_base = &reg32;
iovec.iov_len = sizeof (reg32);
}
if (ptrace (PTRACE_GETREGSET, lwpid, NT_ARM_TLS, &iovec) != 0)
return PS_ERR;
/* IDX is the bias from the thread pointer to the beginning of the
thread descriptor. It has to be subtracted due to implementation
quirks in libthread_db. */
if (is_64bit_p)
*base = (void *) (reg64 - idx);
else
*base = (void *) (uintptr_t) (reg32 - idx);
return PS_OK;
}