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6c2659886f
I'd like to enable the -Wmissing-declarations warning. However, it
warns for every _initialize function, for example:
CXX dcache.o
/home/smarchi/src/binutils-gdb/gdb/dcache.c: In function ‘void _initialize_dcache()’:
/home/smarchi/src/binutils-gdb/gdb/dcache.c:688:1: error: no previous declaration for ‘void _initialize_dcache()’ [-Werror=missing-declarations]
_initialize_dcache (void)
^~~~~~~~~~~~~~~~~~
The only practical way forward I found is to add back the declarations,
which were removed by this commit:
commit 481695ed5f
Author: John Baldwin <jhb@FreeBSD.org>
Date: Sat Sep 9 11:02:37 2017 -0700
Remove unnecessary function prototypes.
I don't think it's a big problem to have the declarations for these
functions, but if anybody has a better solution for this, I'll be happy
to use it.
gdb/ChangeLog:
* aarch64-fbsd-nat.c (_initialize_aarch64_fbsd_nat): Add declaration.
* aarch64-fbsd-tdep.c (_initialize_aarch64_fbsd_tdep): Add declaration.
* aarch64-linux-nat.c (_initialize_aarch64_linux_nat): Add declaration.
* aarch64-linux-tdep.c (_initialize_aarch64_linux_tdep): Add declaration.
* aarch64-newlib-tdep.c (_initialize_aarch64_newlib_tdep): Add declaration.
* aarch64-tdep.c (_initialize_aarch64_tdep): Add declaration.
* ada-exp.y (_initialize_ada_exp): Add declaration.
* ada-lang.c (_initialize_ada_language): Add declaration.
* ada-tasks.c (_initialize_tasks): Add declaration.
* agent.c (_initialize_agent): Add declaration.
* aix-thread.c (_initialize_aix_thread): Add declaration.
* alpha-bsd-nat.c (_initialize_alphabsd_nat): Add declaration.
* alpha-linux-nat.c (_initialize_alpha_linux_nat): Add declaration.
* alpha-linux-tdep.c (_initialize_alpha_linux_tdep): Add declaration.
* alpha-nbsd-tdep.c (_initialize_alphanbsd_tdep): Add declaration.
* alpha-obsd-tdep.c (_initialize_alphaobsd_tdep): Add declaration.
* alpha-tdep.c (_initialize_alpha_tdep): Add declaration.
* amd64-darwin-tdep.c (_initialize_amd64_darwin_tdep): Add declaration.
* amd64-dicos-tdep.c (_initialize_amd64_dicos_tdep): Add declaration.
* amd64-fbsd-nat.c (_initialize_amd64fbsd_nat): Add declaration.
* amd64-fbsd-tdep.c (_initialize_amd64fbsd_tdep): Add declaration.
* amd64-linux-nat.c (_initialize_amd64_linux_nat): Add declaration.
* amd64-linux-tdep.c (_initialize_amd64_linux_tdep): Add declaration.
* amd64-nbsd-nat.c (_initialize_amd64nbsd_nat): Add declaration.
* amd64-nbsd-tdep.c (_initialize_amd64nbsd_tdep): Add declaration.
* amd64-obsd-nat.c (_initialize_amd64obsd_nat): Add declaration.
* amd64-obsd-tdep.c (_initialize_amd64obsd_tdep): Add declaration.
* amd64-sol2-tdep.c (_initialize_amd64_sol2_tdep): Add declaration.
* amd64-tdep.c (_initialize_amd64_tdep): Add declaration.
* amd64-windows-nat.c (_initialize_amd64_windows_nat): Add declaration.
* amd64-windows-tdep.c (_initialize_amd64_windows_tdep): Add declaration.
* annotate.c (_initialize_annotate): Add declaration.
* arc-newlib-tdep.c (_initialize_arc_newlib_tdep): Add declaration.
* arc-tdep.c (_initialize_arc_tdep): Add declaration.
* arch-utils.c (_initialize_gdbarch_utils): Add declaration.
* arm-fbsd-nat.c (_initialize_arm_fbsd_nat): Add declaration.
* arm-fbsd-tdep.c (_initialize_arm_fbsd_tdep): Add declaration.
* arm-linux-nat.c (_initialize_arm_linux_nat): Add declaration.
* arm-linux-tdep.c (_initialize_arm_linux_tdep): Add declaration.
* arm-nbsd-nat.c (_initialize_arm_netbsd_nat): Add declaration.
* arm-nbsd-tdep.c (_initialize_arm_netbsd_tdep): Add declaration.
* arm-obsd-tdep.c (_initialize_armobsd_tdep): Add declaration.
* arm-pikeos-tdep.c (_initialize_arm_pikeos_tdep): Add declaration.
* arm-symbian-tdep.c (_initialize_arm_symbian_tdep): Add declaration.
* arm-tdep.c (_initialize_arm_tdep): Add declaration.
* arm-wince-tdep.c (_initialize_arm_wince_tdep): Add declaration.
* auto-load.c (_initialize_auto_load): Add declaration.
* auxv.c (_initialize_auxv): Add declaration.
* avr-tdep.c (_initialize_avr_tdep): Add declaration.
* ax-gdb.c (_initialize_ax_gdb): Add declaration.
* bfin-linux-tdep.c (_initialize_bfin_linux_tdep): Add declaration.
* bfin-tdep.c (_initialize_bfin_tdep): Add declaration.
* break-catch-sig.c (_initialize_break_catch_sig): Add declaration.
* break-catch-syscall.c (_initialize_break_catch_syscall): Add declaration.
* break-catch-throw.c (_initialize_break_catch_throw): Add declaration.
* breakpoint.c (_initialize_breakpoint): Add declaration.
* bsd-uthread.c (_initialize_bsd_uthread): Add declaration.
* btrace.c (_initialize_btrace): Add declaration.
* charset.c (_initialize_charset): Add declaration.
* cli/cli-cmds.c (_initialize_cli_cmds): Add declaration.
* cli/cli-dump.c (_initialize_cli_dump): Add declaration.
* cli/cli-interp.c (_initialize_cli_interp): Add declaration.
* cli/cli-logging.c (_initialize_cli_logging): Add declaration.
* cli/cli-script.c (_initialize_cli_script): Add declaration.
* cli/cli-style.c (_initialize_cli_style): Add declaration.
* coff-pe-read.c (_initialize_coff_pe_read): Add declaration.
* coffread.c (_initialize_coffread): Add declaration.
* compile/compile-cplus-types.c (_initialize_compile_cplus_types): Add declaration.
* compile/compile.c (_initialize_compile): Add declaration.
* complaints.c (_initialize_complaints): Add declaration.
* completer.c (_initialize_completer): Add declaration.
* copying.c (_initialize_copying): Add declaration.
* corefile.c (_initialize_core): Add declaration.
* corelow.c (_initialize_corelow): Add declaration.
* cp-abi.c (_initialize_cp_abi): Add declaration.
* cp-namespace.c (_initialize_cp_namespace): Add declaration.
* cp-support.c (_initialize_cp_support): Add declaration.
* cp-valprint.c (_initialize_cp_valprint): Add declaration.
* cris-linux-tdep.c (_initialize_cris_linux_tdep): Add declaration.
* cris-tdep.c (_initialize_cris_tdep): Add declaration.
* csky-linux-tdep.c (_initialize_csky_linux_tdep): Add declaration.
* csky-tdep.c (_initialize_csky_tdep): Add declaration.
* ctfread.c (_initialize_ctfread): Add declaration.
* d-lang.c (_initialize_d_language): Add declaration.
* darwin-nat-info.c (_initialize_darwin_info_commands): Add declaration.
* darwin-nat.c (_initialize_darwin_nat): Add declaration.
* dbxread.c (_initialize_dbxread): Add declaration.
* dcache.c (_initialize_dcache): Add declaration.
* disasm-selftests.c (_initialize_disasm_selftests): Add declaration.
* disasm.c (_initialize_disasm): Add declaration.
* dtrace-probe.c (_initialize_dtrace_probe): Add declaration.
* dummy-frame.c (_initialize_dummy_frame): Add declaration.
* dwarf-index-cache.c (_initialize_index_cache): Add declaration.
* dwarf-index-write.c (_initialize_dwarf_index_write): Add declaration.
* dwarf2-frame-tailcall.c (_initialize_tailcall_frame): Add declaration.
* dwarf2-frame.c (_initialize_dwarf2_frame): Add declaration.
* dwarf2expr.c (_initialize_dwarf2expr): Add declaration.
* dwarf2loc.c (_initialize_dwarf2loc): Add declaration.
* dwarf2read.c (_initialize_dwarf2_read): Add declaration.
* elfread.c (_initialize_elfread): Add declaration.
* exec.c (_initialize_exec): Add declaration.
* extension.c (_initialize_extension): Add declaration.
* f-lang.c (_initialize_f_language): Add declaration.
* f-valprint.c (_initialize_f_valprint): Add declaration.
* fbsd-nat.c (_initialize_fbsd_nat): Add declaration.
* fbsd-tdep.c (_initialize_fbsd_tdep): Add declaration.
* filesystem.c (_initialize_filesystem): Add declaration.
* findcmd.c (_initialize_mem_search): Add declaration.
* findvar.c (_initialize_findvar): Add declaration.
* fork-child.c (_initialize_fork_child): Add declaration.
* frame-base.c (_initialize_frame_base): Add declaration.
* frame-unwind.c (_initialize_frame_unwind): Add declaration.
* frame.c (_initialize_frame): Add declaration.
* frv-linux-tdep.c (_initialize_frv_linux_tdep): Add declaration.
* frv-tdep.c (_initialize_frv_tdep): Add declaration.
* ft32-tdep.c (_initialize_ft32_tdep): Add declaration.
* gcore.c (_initialize_gcore): Add declaration.
* gdb-demangle.c (_initialize_gdb_demangle): Add declaration.
* gdb_bfd.c (_initialize_gdb_bfd): Add declaration.
* gdbarch-selftests.c (_initialize_gdbarch_selftests): Add declaration.
* gdbarch.c (_initialize_gdbarch): Add declaration.
* gdbtypes.c (_initialize_gdbtypes): Add declaration.
* gnu-nat.c (_initialize_gnu_nat): Add declaration.
* gnu-v2-abi.c (_initialize_gnu_v2_abi): Add declaration.
* gnu-v3-abi.c (_initialize_gnu_v3_abi): Add declaration.
* go-lang.c (_initialize_go_language): Add declaration.
* go32-nat.c (_initialize_go32_nat): Add declaration.
* guile/guile.c (_initialize_guile): Add declaration.
* h8300-tdep.c (_initialize_h8300_tdep): Add declaration.
* hppa-linux-nat.c (_initialize_hppa_linux_nat): Add declaration.
* hppa-linux-tdep.c (_initialize_hppa_linux_tdep): Add declaration.
* hppa-nbsd-nat.c (_initialize_hppanbsd_nat): Add declaration.
* hppa-nbsd-tdep.c (_initialize_hppanbsd_tdep): Add declaration.
* hppa-obsd-nat.c (_initialize_hppaobsd_nat): Add declaration.
* hppa-obsd-tdep.c (_initialize_hppabsd_tdep): Add declaration.
* hppa-tdep.c (_initialize_hppa_tdep): Add declaration.
* i386-bsd-nat.c (_initialize_i386bsd_nat): Add declaration.
* i386-cygwin-tdep.c (_initialize_i386_cygwin_tdep): Add declaration.
* i386-darwin-nat.c (_initialize_i386_darwin_nat): Add declaration.
* i386-darwin-tdep.c (_initialize_i386_darwin_tdep): Add declaration.
* i386-dicos-tdep.c (_initialize_i386_dicos_tdep): Add declaration.
* i386-fbsd-nat.c (_initialize_i386fbsd_nat): Add declaration.
* i386-fbsd-tdep.c (_initialize_i386fbsd_tdep): Add declaration.
* i386-gnu-nat.c (_initialize_i386gnu_nat): Add declaration.
* i386-gnu-tdep.c (_initialize_i386gnu_tdep): Add declaration.
* i386-go32-tdep.c (_initialize_i386_go32_tdep): Add declaration.
* i386-linux-nat.c (_initialize_i386_linux_nat): Add declaration.
* i386-linux-tdep.c (_initialize_i386_linux_tdep): Add declaration.
* i386-nbsd-nat.c (_initialize_i386nbsd_nat): Add declaration.
* i386-nbsd-tdep.c (_initialize_i386nbsd_tdep): Add declaration.
* i386-nto-tdep.c (_initialize_i386nto_tdep): Add declaration.
* i386-obsd-nat.c (_initialize_i386obsd_nat): Add declaration.
* i386-obsd-tdep.c (_initialize_i386obsd_tdep): Add declaration.
* i386-sol2-nat.c (_initialize_amd64_sol2_nat): Add declaration.
* i386-sol2-tdep.c (_initialize_i386_sol2_tdep): Add declaration.
* i386-tdep.c (_initialize_i386_tdep): Add declaration.
* i386-windows-nat.c (_initialize_i386_windows_nat): Add declaration.
* ia64-libunwind-tdep.c (_initialize_libunwind_frame): Add declaration.
* ia64-linux-nat.c (_initialize_ia64_linux_nat): Add declaration.
* ia64-linux-tdep.c (_initialize_ia64_linux_tdep): Add declaration.
* ia64-tdep.c (_initialize_ia64_tdep): Add declaration.
* ia64-vms-tdep.c (_initialize_ia64_vms_tdep): Add declaration.
* infcall.c (_initialize_infcall): Add declaration.
* infcmd.c (_initialize_infcmd): Add declaration.
* inflow.c (_initialize_inflow): Add declaration.
* infrun.c (_initialize_infrun): Add declaration.
* interps.c (_initialize_interpreter): Add declaration.
* iq2000-tdep.c (_initialize_iq2000_tdep): Add declaration.
* jit.c (_initialize_jit): Add declaration.
* language.c (_initialize_language): Add declaration.
* linux-fork.c (_initialize_linux_fork): Add declaration.
* linux-nat.c (_initialize_linux_nat): Add declaration.
* linux-tdep.c (_initialize_linux_tdep): Add declaration.
* linux-thread-db.c (_initialize_thread_db): Add declaration.
* lm32-tdep.c (_initialize_lm32_tdep): Add declaration.
* m2-lang.c (_initialize_m2_language): Add declaration.
* m32c-tdep.c (_initialize_m32c_tdep): Add declaration.
* m32r-linux-nat.c (_initialize_m32r_linux_nat): Add declaration.
* m32r-linux-tdep.c (_initialize_m32r_linux_tdep): Add declaration.
* m32r-tdep.c (_initialize_m32r_tdep): Add declaration.
* m68hc11-tdep.c (_initialize_m68hc11_tdep): Add declaration.
* m68k-bsd-nat.c (_initialize_m68kbsd_nat): Add declaration.
* m68k-bsd-tdep.c (_initialize_m68kbsd_tdep): Add declaration.
* m68k-linux-nat.c (_initialize_m68k_linux_nat): Add declaration.
* m68k-linux-tdep.c (_initialize_m68k_linux_tdep): Add declaration.
* m68k-tdep.c (_initialize_m68k_tdep): Add declaration.
* machoread.c (_initialize_machoread): Add declaration.
* macrocmd.c (_initialize_macrocmd): Add declaration.
* macroscope.c (_initialize_macroscope): Add declaration.
* maint-test-options.c (_initialize_maint_test_options): Add declaration.
* maint-test-settings.c (_initialize_maint_test_settings): Add declaration.
* maint.c (_initialize_maint_cmds): Add declaration.
* mdebugread.c (_initialize_mdebugread): Add declaration.
* memattr.c (_initialize_mem): Add declaration.
* mep-tdep.c (_initialize_mep_tdep): Add declaration.
* mi/mi-cmd-env.c (_initialize_mi_cmd_env): Add declaration.
* mi/mi-cmds.c (_initialize_mi_cmds): Add declaration.
* mi/mi-interp.c (_initialize_mi_interp): Add declaration.
* mi/mi-main.c (_initialize_mi_main): Add declaration.
* microblaze-linux-tdep.c (_initialize_microblaze_linux_tdep): Add declaration.
* microblaze-tdep.c (_initialize_microblaze_tdep): Add declaration.
* mips-fbsd-nat.c (_initialize_mips_fbsd_nat): Add declaration.
* mips-fbsd-tdep.c (_initialize_mips_fbsd_tdep): Add declaration.
* mips-linux-nat.c (_initialize_mips_linux_nat): Add declaration.
* mips-linux-tdep.c (_initialize_mips_linux_tdep): Add declaration.
* mips-nbsd-nat.c (_initialize_mipsnbsd_nat): Add declaration.
* mips-nbsd-tdep.c (_initialize_mipsnbsd_tdep): Add declaration.
* mips-sde-tdep.c (_initialize_mips_sde_tdep): Add declaration.
* mips-tdep.c (_initialize_mips_tdep): Add declaration.
* mips64-obsd-nat.c (_initialize_mips64obsd_nat): Add declaration.
* mips64-obsd-tdep.c (_initialize_mips64obsd_tdep): Add declaration.
* mipsread.c (_initialize_mipsread): Add declaration.
* mn10300-linux-tdep.c (_initialize_mn10300_linux_tdep): Add declaration.
* mn10300-tdep.c (_initialize_mn10300_tdep): Add declaration.
* moxie-tdep.c (_initialize_moxie_tdep): Add declaration.
* msp430-tdep.c (_initialize_msp430_tdep): Add declaration.
* nds32-tdep.c (_initialize_nds32_tdep): Add declaration.
* nios2-linux-tdep.c (_initialize_nios2_linux_tdep): Add declaration.
* nios2-tdep.c (_initialize_nios2_tdep): Add declaration.
* nto-procfs.c (_initialize_procfs): Add declaration.
* objc-lang.c (_initialize_objc_language): Add declaration.
* observable.c (_initialize_observer): Add declaration.
* opencl-lang.c (_initialize_opencl_language): Add declaration.
* or1k-linux-tdep.c (_initialize_or1k_linux_tdep): Add declaration.
* or1k-tdep.c (_initialize_or1k_tdep): Add declaration.
* osabi.c (_initialize_gdb_osabi): Add declaration.
* osdata.c (_initialize_osdata): Add declaration.
* p-valprint.c (_initialize_pascal_valprint): Add declaration.
* parse.c (_initialize_parse): Add declaration.
* ppc-fbsd-nat.c (_initialize_ppcfbsd_nat): Add declaration.
* ppc-fbsd-tdep.c (_initialize_ppcfbsd_tdep): Add declaration.
* ppc-linux-nat.c (_initialize_ppc_linux_nat): Add declaration.
* ppc-linux-tdep.c (_initialize_ppc_linux_tdep): Add declaration.
* ppc-nbsd-nat.c (_initialize_ppcnbsd_nat): Add declaration.
* ppc-nbsd-tdep.c (_initialize_ppcnbsd_tdep): Add declaration.
* ppc-obsd-nat.c (_initialize_ppcobsd_nat): Add declaration.
* ppc-obsd-tdep.c (_initialize_ppcobsd_tdep): Add declaration.
* printcmd.c (_initialize_printcmd): Add declaration.
* probe.c (_initialize_probe): Add declaration.
* proc-api.c (_initialize_proc_api): Add declaration.
* proc-events.c (_initialize_proc_events): Add declaration.
* proc-service.c (_initialize_proc_service): Add declaration.
* procfs.c (_initialize_procfs): Add declaration.
* producer.c (_initialize_producer): Add declaration.
* psymtab.c (_initialize_psymtab): Add declaration.
* python/python.c (_initialize_python): Add declaration.
* ravenscar-thread.c (_initialize_ravenscar): Add declaration.
* record-btrace.c (_initialize_record_btrace): Add declaration.
* record-full.c (_initialize_record_full): Add declaration.
* record.c (_initialize_record): Add declaration.
* regcache-dump.c (_initialize_regcache_dump): Add declaration.
* regcache.c (_initialize_regcache): Add declaration.
* reggroups.c (_initialize_reggroup): Add declaration.
* remote-notif.c (_initialize_notif): Add declaration.
* remote-sim.c (_initialize_remote_sim): Add declaration.
* remote.c (_initialize_remote): Add declaration.
* reverse.c (_initialize_reverse): Add declaration.
* riscv-fbsd-nat.c (_initialize_riscv_fbsd_nat): Add declaration.
* riscv-fbsd-tdep.c (_initialize_riscv_fbsd_tdep): Add declaration.
* riscv-linux-nat.c (_initialize_riscv_linux_nat): Add declaration.
* riscv-linux-tdep.c (_initialize_riscv_linux_tdep): Add declaration.
* riscv-tdep.c (_initialize_riscv_tdep): Add declaration.
* rl78-tdep.c (_initialize_rl78_tdep): Add declaration.
* rs6000-aix-tdep.c (_initialize_rs6000_aix_tdep): Add declaration.
* rs6000-lynx178-tdep.c (_initialize_rs6000_lynx178_tdep):
Add declaration.
* rs6000-nat.c (_initialize_rs6000_nat): Add declaration.
* rs6000-tdep.c (_initialize_rs6000_tdep): Add declaration.
* run-on-main-thread.c (_initialize_run_on_main_thread): Add declaration.
* rust-exp.y (_initialize_rust_exp): Add declaration.
* rx-tdep.c (_initialize_rx_tdep): Add declaration.
* s12z-tdep.c (_initialize_s12z_tdep): Add declaration.
* s390-linux-nat.c (_initialize_s390_nat): Add declaration.
* s390-linux-tdep.c (_initialize_s390_linux_tdep): Add declaration.
* s390-tdep.c (_initialize_s390_tdep): Add declaration.
* score-tdep.c (_initialize_score_tdep): Add declaration.
* ser-go32.c (_initialize_ser_dos): Add declaration.
* ser-mingw.c (_initialize_ser_windows): Add declaration.
* ser-pipe.c (_initialize_ser_pipe): Add declaration.
* ser-tcp.c (_initialize_ser_tcp): Add declaration.
* ser-uds.c (_initialize_ser_socket): Add declaration.
* ser-unix.c (_initialize_ser_hardwire): Add declaration.
* serial.c (_initialize_serial): Add declaration.
* sh-linux-tdep.c (_initialize_sh_linux_tdep): Add declaration.
* sh-nbsd-nat.c (_initialize_shnbsd_nat): Add declaration.
* sh-nbsd-tdep.c (_initialize_shnbsd_tdep): Add declaration.
* sh-tdep.c (_initialize_sh_tdep): Add declaration.
* skip.c (_initialize_step_skip): Add declaration.
* sol-thread.c (_initialize_sol_thread): Add declaration.
* solib-aix.c (_initialize_solib_aix): Add declaration.
* solib-darwin.c (_initialize_darwin_solib): Add declaration.
* solib-dsbt.c (_initialize_dsbt_solib): Add declaration.
* solib-frv.c (_initialize_frv_solib): Add declaration.
* solib-svr4.c (_initialize_svr4_solib): Add declaration.
* solib-target.c (_initialize_solib_target): Add declaration.
* solib.c (_initialize_solib): Add declaration.
* source-cache.c (_initialize_source_cache): Add declaration.
* source.c (_initialize_source): Add declaration.
* sparc-linux-nat.c (_initialize_sparc_linux_nat): Add declaration.
* sparc-linux-tdep.c (_initialize_sparc_linux_tdep): Add declaration.
* sparc-nat.c (_initialize_sparc_nat): Add declaration.
* sparc-nbsd-nat.c (_initialize_sparcnbsd_nat): Add declaration.
* sparc-nbsd-tdep.c (_initialize_sparcnbsd_tdep): Add declaration.
* sparc-obsd-tdep.c (_initialize_sparc32obsd_tdep): Add declaration.
* sparc-sol2-tdep.c (_initialize_sparc_sol2_tdep): Add declaration.
* sparc-tdep.c (_initialize_sparc_tdep): Add declaration.
* sparc64-fbsd-nat.c (_initialize_sparc64fbsd_nat): Add declaration.
* sparc64-fbsd-tdep.c (_initialize_sparc64fbsd_tdep): Add declaration.
* sparc64-linux-nat.c (_initialize_sparc64_linux_nat): Add declaration.
* sparc64-linux-tdep.c (_initialize_sparc64_linux_tdep): Add declaration.
* sparc64-nat.c (_initialize_sparc64_nat): Add declaration.
* sparc64-nbsd-nat.c (_initialize_sparc64nbsd_nat): Add declaration.
* sparc64-nbsd-tdep.c (_initialize_sparc64nbsd_tdep): Add declaration.
* sparc64-obsd-nat.c (_initialize_sparc64obsd_nat): Add declaration.
* sparc64-obsd-tdep.c (_initialize_sparc64obsd_tdep): Add declaration.
* sparc64-sol2-tdep.c (_initialize_sparc64_sol2_tdep): Add declaration.
* sparc64-tdep.c (_initialize_sparc64_adi_tdep): Add declaration.
* stabsread.c (_initialize_stabsread): Add declaration.
* stack.c (_initialize_stack): Add declaration.
* stap-probe.c (_initialize_stap_probe): Add declaration.
* std-regs.c (_initialize_frame_reg): Add declaration.
* symfile-debug.c (_initialize_symfile_debug): Add declaration.
* symfile-mem.c (_initialize_symfile_mem): Add declaration.
* symfile.c (_initialize_symfile): Add declaration.
* symmisc.c (_initialize_symmisc): Add declaration.
* symtab.c (_initialize_symtab): Add declaration.
* target.c (_initialize_target): Add declaration.
* target-connection.c (_initialize_target_connection): Add
declaration.
* target-dcache.c (_initialize_target_dcache): Add declaration.
* target-descriptions.c (_initialize_target_descriptions): Add declaration.
* thread.c (_initialize_thread): Add declaration.
* tic6x-linux-tdep.c (_initialize_tic6x_linux_tdep): Add declaration.
* tic6x-tdep.c (_initialize_tic6x_tdep): Add declaration.
* tilegx-linux-nat.c (_initialize_tile_linux_nat): Add declaration.
* tilegx-linux-tdep.c (_initialize_tilegx_linux_tdep): Add declaration.
* tilegx-tdep.c (_initialize_tilegx_tdep): Add declaration.
* tracectf.c (_initialize_ctf): Add declaration.
* tracefile-tfile.c (_initialize_tracefile_tfile): Add declaration.
* tracefile.c (_initialize_tracefile): Add declaration.
* tracepoint.c (_initialize_tracepoint): Add declaration.
* tui/tui-hooks.c (_initialize_tui_hooks): Add declaration.
* tui/tui-interp.c (_initialize_tui_interp): Add declaration.
* tui/tui-layout.c (_initialize_tui_layout): Add declaration.
* tui/tui-regs.c (_initialize_tui_regs): Add declaration.
* tui/tui-stack.c (_initialize_tui_stack): Add declaration.
* tui/tui-win.c (_initialize_tui_win): Add declaration.
* tui/tui.c (_initialize_tui): Add declaration.
* typeprint.c (_initialize_typeprint): Add declaration.
* ui-style.c (_initialize_ui_style): Add declaration.
* unittests/array-view-selftests.c (_initialize_array_view_selftests): Add declaration.
* unittests/child-path-selftests.c (_initialize_child_path_selftests): Add declaration.
* unittests/cli-utils-selftests.c (_initialize_cli_utils_selftests): Add declaration.
* unittests/common-utils-selftests.c (_initialize_common_utils_selftests): Add declaration.
* unittests/copy_bitwise-selftests.c (_initialize_copy_bitwise_utils_selftests): Add declaration.
* unittests/environ-selftests.c (_initialize_environ_selftests): Add declaration.
* unittests/filtered_iterator-selftests.c
(_initialize_filtered_iterator_selftests): Add declaration.
* unittests/format_pieces-selftests.c (_initialize_format_pieces_selftests): Add declaration.
* unittests/function-view-selftests.c (_initialize_function_view_selftests): Add declaration.
* unittests/help-doc-selftests.c (_initialize_help_doc_selftests): Add declaration.
* unittests/lookup_name_info-selftests.c (_initialize_lookup_name_info_selftests): Add declaration.
* unittests/main-thread-selftests.c
(_initialize_main_thread_selftests): Add declaration.
* unittests/memory-map-selftests.c (_initialize_memory_map_selftests): Add declaration.
* unittests/memrange-selftests.c (_initialize_memrange_selftests): Add declaration.
* unittests/mkdir-recursive-selftests.c (_initialize_mkdir_recursive_selftests): Add declaration.
* unittests/observable-selftests.c (_initialize_observer_selftest): Add declaration.
* unittests/offset-type-selftests.c (_initialize_offset_type_selftests): Add declaration.
* unittests/optional-selftests.c (_initialize_optional_selftests): Add declaration.
* unittests/parse-connection-spec-selftests.c (_initialize_parse_connection_spec_selftests): Add declaration.
* unittests/rsp-low-selftests.c (_initialize_rsp_low_selftests): Add declaration.
* unittests/scoped_fd-selftests.c (_initialize_scoped_fd_selftests): Add declaration.
* unittests/scoped_mmap-selftests.c (_initialize_scoped_mmap_selftests): Add declaration.
* unittests/scoped_restore-selftests.c (_initialize_scoped_restore_selftests): Add declaration.
* unittests/string_view-selftests.c (_initialize_string_view_selftests): Add declaration.
* unittests/style-selftests.c (_initialize_style_selftest): Add declaration.
* unittests/tracepoint-selftests.c (_initialize_tracepoint_selftests): Add declaration.
* unittests/tui-selftests.c (_initialize_tui_selftest): Add
declaration.
* unittests/unpack-selftests.c (_initialize_unpack_selftests): Add declaration.
* unittests/utils-selftests.c (_initialize_utils_selftests): Add declaration.
* unittests/vec-utils-selftests.c (_initialize_vec_utils_selftests): Add declaration.
* unittests/xml-utils-selftests.c (_initialize_xml_utils): Add declaration.
* user-regs.c (_initialize_user_regs): Add declaration.
* utils.c (_initialize_utils): Add declaration.
* v850-tdep.c (_initialize_v850_tdep): Add declaration.
* valops.c (_initialize_valops): Add declaration.
* valprint.c (_initialize_valprint): Add declaration.
* value.c (_initialize_values): Add declaration.
* varobj.c (_initialize_varobj): Add declaration.
* vax-bsd-nat.c (_initialize_vaxbsd_nat): Add declaration.
* vax-nbsd-tdep.c (_initialize_vaxnbsd_tdep): Add declaration.
* vax-tdep.c (_initialize_vax_tdep): Add declaration.
* windows-nat.c (_initialize_windows_nat): Add declaration.
(_initialize_check_for_gdb_ini): Add declaration.
(_initialize_loadable): Add declaration.
* windows-tdep.c (_initialize_windows_tdep): Add declaration.
* x86-bsd-nat.c (_initialize_x86_bsd_nat): Add declaration.
* x86-linux-nat.c (_initialize_x86_linux_nat): Add declaration.
* xcoffread.c (_initialize_xcoffread): Add declaration.
* xml-support.c (_initialize_xml_support): Add declaration.
* xstormy16-tdep.c (_initialize_xstormy16_tdep): Add declaration.
* xtensa-linux-nat.c (_initialize_xtensa_linux_nat): Add declaration.
* xtensa-linux-tdep.c (_initialize_xtensa_linux_tdep): Add declaration.
* xtensa-tdep.c (_initialize_xtensa_tdep): Add declaration.
Change-Id: I13eec7e0ed2b3c427377a7bdb055cf46da64def9
1310 lines
36 KiB
C
1310 lines
36 KiB
C
/* GNU/Linux on ARM native support.
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Copyright (C) 1999-2020 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "inferior.h"
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#include "gdbcore.h"
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#include "regcache.h"
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#include "target.h"
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#include "linux-nat.h"
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#include "target-descriptions.h"
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#include "auxv.h"
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#include "observable.h"
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#include "gdbthread.h"
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#include "aarch32-tdep.h"
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#include "arm-tdep.h"
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#include "arm-linux-tdep.h"
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#include "aarch32-linux-nat.h"
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#include <elf/common.h>
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#include <sys/user.h>
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#include "nat/gdb_ptrace.h"
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#include <sys/utsname.h>
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#include <sys/procfs.h>
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#include "nat/linux-ptrace.h"
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#include "linux-tdep.h"
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/* Prototypes for supply_gregset etc. */
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#include "gregset.h"
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/* Defines ps_err_e, struct ps_prochandle. */
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#include "gdb_proc_service.h"
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#ifndef PTRACE_GET_THREAD_AREA
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#define PTRACE_GET_THREAD_AREA 22
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#endif
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#ifndef PTRACE_GETWMMXREGS
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#define PTRACE_GETWMMXREGS 18
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#define PTRACE_SETWMMXREGS 19
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#endif
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#ifndef PTRACE_GETVFPREGS
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#define PTRACE_GETVFPREGS 27
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#define PTRACE_SETVFPREGS 28
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#endif
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#ifndef PTRACE_GETHBPREGS
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#define PTRACE_GETHBPREGS 29
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#define PTRACE_SETHBPREGS 30
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#endif
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class arm_linux_nat_target final : public linux_nat_target
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{
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public:
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/* Add our register access methods. */
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void fetch_registers (struct regcache *, int) override;
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void store_registers (struct regcache *, int) override;
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/* Add our hardware breakpoint and watchpoint implementation. */
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int can_use_hw_breakpoint (enum bptype, int, int) override;
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int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override;
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int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override;
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int region_ok_for_hw_watchpoint (CORE_ADDR, int) override;
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int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type,
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struct expression *) override;
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int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type,
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struct expression *) override;
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bool stopped_by_watchpoint () override;
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bool stopped_data_address (CORE_ADDR *) override;
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bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override;
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const struct target_desc *read_description () override;
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/* Override linux_nat_target low methods. */
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/* Handle thread creation and exit. */
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void low_new_thread (struct lwp_info *lp) override;
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void low_delete_thread (struct arch_lwp_info *lp) override;
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void low_prepare_to_resume (struct lwp_info *lp) override;
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/* Handle process creation and exit. */
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void low_new_fork (struct lwp_info *parent, pid_t child_pid) override;
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void low_forget_process (pid_t pid) override;
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};
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static arm_linux_nat_target the_arm_linux_nat_target;
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/* Get the whole floating point state of the process and store it
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into regcache. */
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static void
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fetch_fpregs (struct regcache *regcache)
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{
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int ret, regno, tid;
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gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
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/* Get the thread id for the ptrace call. */
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tid = regcache->ptid ().lwp ();
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/* Read the floating point state. */
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if (have_ptrace_getregset == TRIBOOL_TRUE)
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{
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struct iovec iov;
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iov.iov_base = &fp;
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iov.iov_len = ARM_LINUX_SIZEOF_NWFPE;
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ret = ptrace (PTRACE_GETREGSET, tid, NT_FPREGSET, &iov);
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}
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else
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ret = ptrace (PT_GETFPREGS, tid, 0, fp);
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if (ret < 0)
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perror_with_name (_("Unable to fetch the floating point registers."));
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/* Fetch fpsr. */
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regcache->raw_supply (ARM_FPS_REGNUM, fp + NWFPE_FPSR_OFFSET);
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/* Fetch the floating point registers. */
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for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
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supply_nwfpe_register (regcache, regno, fp);
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}
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/* Save the whole floating point state of the process using
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the contents from regcache. */
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static void
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store_fpregs (const struct regcache *regcache)
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{
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int ret, regno, tid;
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gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
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/* Get the thread id for the ptrace call. */
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tid = regcache->ptid ().lwp ();
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/* Read the floating point state. */
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if (have_ptrace_getregset == TRIBOOL_TRUE)
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{
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elf_fpregset_t fpregs;
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struct iovec iov;
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iov.iov_base = &fpregs;
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iov.iov_len = sizeof (fpregs);
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ret = ptrace (PTRACE_GETREGSET, tid, NT_FPREGSET, &iov);
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}
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else
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ret = ptrace (PT_GETFPREGS, tid, 0, fp);
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if (ret < 0)
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perror_with_name (_("Unable to fetch the floating point registers."));
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/* Store fpsr. */
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if (REG_VALID == regcache->get_register_status (ARM_FPS_REGNUM))
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regcache->raw_collect (ARM_FPS_REGNUM, fp + NWFPE_FPSR_OFFSET);
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/* Store the floating point registers. */
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for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
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if (REG_VALID == regcache->get_register_status (regno))
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collect_nwfpe_register (regcache, regno, fp);
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if (have_ptrace_getregset == TRIBOOL_TRUE)
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{
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struct iovec iov;
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iov.iov_base = &fp;
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iov.iov_len = ARM_LINUX_SIZEOF_NWFPE;
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ret = ptrace (PTRACE_SETREGSET, tid, NT_FPREGSET, &iov);
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}
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else
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ret = ptrace (PTRACE_SETFPREGS, tid, 0, fp);
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if (ret < 0)
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perror_with_name (_("Unable to store floating point registers."));
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}
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/* Fetch all general registers of the process and store into
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regcache. */
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static void
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fetch_regs (struct regcache *regcache)
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{
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int ret, tid;
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elf_gregset_t regs;
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/* Get the thread id for the ptrace call. */
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tid = regcache->ptid ().lwp ();
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if (have_ptrace_getregset == TRIBOOL_TRUE)
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{
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struct iovec iov;
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iov.iov_base = ®s;
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iov.iov_len = sizeof (regs);
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ret = ptrace (PTRACE_GETREGSET, tid, NT_PRSTATUS, &iov);
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}
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else
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ret = ptrace (PTRACE_GETREGS, tid, 0, ®s);
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if (ret < 0)
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perror_with_name (_("Unable to fetch general registers."));
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aarch32_gp_regcache_supply (regcache, (uint32_t *) regs, arm_apcs_32);
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}
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static void
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store_regs (const struct regcache *regcache)
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{
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int ret, tid;
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elf_gregset_t regs;
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/* Get the thread id for the ptrace call. */
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tid = regcache->ptid ().lwp ();
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/* Fetch the general registers. */
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if (have_ptrace_getregset == TRIBOOL_TRUE)
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{
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struct iovec iov;
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iov.iov_base = ®s;
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iov.iov_len = sizeof (regs);
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ret = ptrace (PTRACE_GETREGSET, tid, NT_PRSTATUS, &iov);
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}
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else
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ret = ptrace (PTRACE_GETREGS, tid, 0, ®s);
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if (ret < 0)
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perror_with_name (_("Unable to fetch general registers."));
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aarch32_gp_regcache_collect (regcache, (uint32_t *) regs, arm_apcs_32);
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if (have_ptrace_getregset == TRIBOOL_TRUE)
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{
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struct iovec iov;
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iov.iov_base = ®s;
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iov.iov_len = sizeof (regs);
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ret = ptrace (PTRACE_SETREGSET, tid, NT_PRSTATUS, &iov);
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}
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else
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ret = ptrace (PTRACE_SETREGS, tid, 0, ®s);
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if (ret < 0)
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perror_with_name (_("Unable to store general registers."));
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}
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/* Fetch all WMMX registers of the process and store into
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regcache. */
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static void
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fetch_wmmx_regs (struct regcache *regcache)
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{
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char regbuf[IWMMXT_REGS_SIZE];
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int ret, regno, tid;
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/* Get the thread id for the ptrace call. */
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tid = regcache->ptid ().lwp ();
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ret = ptrace (PTRACE_GETWMMXREGS, tid, 0, regbuf);
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if (ret < 0)
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perror_with_name (_("Unable to fetch WMMX registers."));
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for (regno = 0; regno < 16; regno++)
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regcache->raw_supply (regno + ARM_WR0_REGNUM, ®buf[regno * 8]);
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for (regno = 0; regno < 2; regno++)
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regcache->raw_supply (regno + ARM_WCSSF_REGNUM,
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®buf[16 * 8 + regno * 4]);
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for (regno = 0; regno < 4; regno++)
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regcache->raw_supply (regno + ARM_WCGR0_REGNUM,
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®buf[16 * 8 + 2 * 4 + regno * 4]);
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}
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static void
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store_wmmx_regs (const struct regcache *regcache)
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{
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char regbuf[IWMMXT_REGS_SIZE];
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int ret, regno, tid;
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/* Get the thread id for the ptrace call. */
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tid = regcache->ptid ().lwp ();
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ret = ptrace (PTRACE_GETWMMXREGS, tid, 0, regbuf);
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if (ret < 0)
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perror_with_name (_("Unable to fetch WMMX registers."));
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for (regno = 0; regno < 16; regno++)
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if (REG_VALID == regcache->get_register_status (regno + ARM_WR0_REGNUM))
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regcache->raw_collect (regno + ARM_WR0_REGNUM, ®buf[regno * 8]);
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for (regno = 0; regno < 2; regno++)
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if (REG_VALID == regcache->get_register_status (regno + ARM_WCSSF_REGNUM))
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regcache->raw_collect (regno + ARM_WCSSF_REGNUM,
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®buf[16 * 8 + regno * 4]);
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for (regno = 0; regno < 4; regno++)
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if (REG_VALID == regcache->get_register_status (regno + ARM_WCGR0_REGNUM))
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regcache->raw_collect (regno + ARM_WCGR0_REGNUM,
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®buf[16 * 8 + 2 * 4 + regno * 4]);
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ret = ptrace (PTRACE_SETWMMXREGS, tid, 0, regbuf);
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if (ret < 0)
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perror_with_name (_("Unable to store WMMX registers."));
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}
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static void
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fetch_vfp_regs (struct regcache *regcache)
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{
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gdb_byte regbuf[ARM_VFP3_REGS_SIZE];
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int ret, tid;
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struct gdbarch *gdbarch = regcache->arch ();
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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/* Get the thread id for the ptrace call. */
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tid = regcache->ptid ().lwp ();
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if (have_ptrace_getregset == TRIBOOL_TRUE)
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{
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struct iovec iov;
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iov.iov_base = regbuf;
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iov.iov_len = ARM_VFP3_REGS_SIZE;
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ret = ptrace (PTRACE_GETREGSET, tid, NT_ARM_VFP, &iov);
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}
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else
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ret = ptrace (PTRACE_GETVFPREGS, tid, 0, regbuf);
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if (ret < 0)
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perror_with_name (_("Unable to fetch VFP registers."));
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aarch32_vfp_regcache_supply (regcache, regbuf,
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tdep->vfp_register_count);
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}
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static void
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store_vfp_regs (const struct regcache *regcache)
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{
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gdb_byte regbuf[ARM_VFP3_REGS_SIZE];
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int ret, tid;
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struct gdbarch *gdbarch = regcache->arch ();
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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/* Get the thread id for the ptrace call. */
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tid = regcache->ptid ().lwp ();
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if (have_ptrace_getregset == TRIBOOL_TRUE)
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{
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struct iovec iov;
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iov.iov_base = regbuf;
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iov.iov_len = ARM_VFP3_REGS_SIZE;
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ret = ptrace (PTRACE_GETREGSET, tid, NT_ARM_VFP, &iov);
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}
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else
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ret = ptrace (PTRACE_GETVFPREGS, tid, 0, regbuf);
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if (ret < 0)
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perror_with_name (_("Unable to fetch VFP registers (for update)."));
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aarch32_vfp_regcache_collect (regcache, regbuf,
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tdep->vfp_register_count);
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if (have_ptrace_getregset == TRIBOOL_TRUE)
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{
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struct iovec iov;
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iov.iov_base = regbuf;
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iov.iov_len = ARM_VFP3_REGS_SIZE;
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ret = ptrace (PTRACE_SETREGSET, tid, NT_ARM_VFP, &iov);
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}
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else
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ret = ptrace (PTRACE_SETVFPREGS, tid, 0, regbuf);
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if (ret < 0)
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perror_with_name (_("Unable to store VFP registers."));
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}
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/* Fetch registers from the child process. Fetch all registers if
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regno == -1, otherwise fetch all general registers or all floating
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point registers depending upon the value of regno. */
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void
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arm_linux_nat_target::fetch_registers (struct regcache *regcache, int regno)
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{
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struct gdbarch *gdbarch = regcache->arch ();
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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if (-1 == regno)
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{
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fetch_regs (regcache);
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if (tdep->have_wmmx_registers)
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fetch_wmmx_regs (regcache);
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if (tdep->vfp_register_count > 0)
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fetch_vfp_regs (regcache);
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if (tdep->have_fpa_registers)
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fetch_fpregs (regcache);
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}
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else
|
|
{
|
|
if (regno < ARM_F0_REGNUM || regno == ARM_PS_REGNUM)
|
|
fetch_regs (regcache);
|
|
else if (regno >= ARM_F0_REGNUM && regno <= ARM_FPS_REGNUM)
|
|
fetch_fpregs (regcache);
|
|
else if (tdep->have_wmmx_registers
|
|
&& regno >= ARM_WR0_REGNUM && regno <= ARM_WCGR7_REGNUM)
|
|
fetch_wmmx_regs (regcache);
|
|
else if (tdep->vfp_register_count > 0
|
|
&& regno >= ARM_D0_REGNUM
|
|
&& (regno < ARM_D0_REGNUM + tdep->vfp_register_count
|
|
|| regno == ARM_FPSCR_REGNUM))
|
|
fetch_vfp_regs (regcache);
|
|
}
|
|
}
|
|
|
|
/* Store registers back into the inferior. Store all registers if
|
|
regno == -1, otherwise store all general registers or all floating
|
|
point registers depending upon the value of regno. */
|
|
|
|
void
|
|
arm_linux_nat_target::store_registers (struct regcache *regcache, int regno)
|
|
{
|
|
struct gdbarch *gdbarch = regcache->arch ();
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
if (-1 == regno)
|
|
{
|
|
store_regs (regcache);
|
|
if (tdep->have_wmmx_registers)
|
|
store_wmmx_regs (regcache);
|
|
if (tdep->vfp_register_count > 0)
|
|
store_vfp_regs (regcache);
|
|
if (tdep->have_fpa_registers)
|
|
store_fpregs (regcache);
|
|
}
|
|
else
|
|
{
|
|
if (regno < ARM_F0_REGNUM || regno == ARM_PS_REGNUM)
|
|
store_regs (regcache);
|
|
else if ((regno >= ARM_F0_REGNUM) && (regno <= ARM_FPS_REGNUM))
|
|
store_fpregs (regcache);
|
|
else if (tdep->have_wmmx_registers
|
|
&& regno >= ARM_WR0_REGNUM && regno <= ARM_WCGR7_REGNUM)
|
|
store_wmmx_regs (regcache);
|
|
else if (tdep->vfp_register_count > 0
|
|
&& regno >= ARM_D0_REGNUM
|
|
&& (regno < ARM_D0_REGNUM + tdep->vfp_register_count
|
|
|| regno == ARM_FPSCR_REGNUM))
|
|
store_vfp_regs (regcache);
|
|
}
|
|
}
|
|
|
|
/* Wrapper functions for the standard regset handling, used by
|
|
thread debugging. */
|
|
|
|
void
|
|
fill_gregset (const struct regcache *regcache,
|
|
gdb_gregset_t *gregsetp, int regno)
|
|
{
|
|
arm_linux_collect_gregset (NULL, regcache, regno, gregsetp, 0);
|
|
}
|
|
|
|
void
|
|
supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
|
|
{
|
|
arm_linux_supply_gregset (NULL, regcache, -1, gregsetp, 0);
|
|
}
|
|
|
|
void
|
|
fill_fpregset (const struct regcache *regcache,
|
|
gdb_fpregset_t *fpregsetp, int regno)
|
|
{
|
|
arm_linux_collect_nwfpe (NULL, regcache, regno, fpregsetp, 0);
|
|
}
|
|
|
|
/* Fill GDB's register array with the floating-point register values
|
|
in *fpregsetp. */
|
|
|
|
void
|
|
supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
|
|
{
|
|
arm_linux_supply_nwfpe (NULL, regcache, -1, fpregsetp, 0);
|
|
}
|
|
|
|
/* Fetch the thread-local storage pointer for libthread_db. */
|
|
|
|
ps_err_e
|
|
ps_get_thread_area (struct ps_prochandle *ph,
|
|
lwpid_t lwpid, int idx, void **base)
|
|
{
|
|
if (ptrace (PTRACE_GET_THREAD_AREA, lwpid, NULL, base) != 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. */
|
|
*base = (void *) ((char *)*base - idx);
|
|
|
|
return PS_OK;
|
|
}
|
|
|
|
const struct target_desc *
|
|
arm_linux_nat_target::read_description ()
|
|
{
|
|
CORE_ADDR arm_hwcap = linux_get_hwcap (this);
|
|
|
|
if (have_ptrace_getregset == TRIBOOL_UNKNOWN)
|
|
{
|
|
elf_gregset_t gpregs;
|
|
struct iovec iov;
|
|
int tid = inferior_ptid.lwp ();
|
|
|
|
iov.iov_base = &gpregs;
|
|
iov.iov_len = sizeof (gpregs);
|
|
|
|
/* Check if PTRACE_GETREGSET works. */
|
|
if (ptrace (PTRACE_GETREGSET, tid, NT_PRSTATUS, &iov) < 0)
|
|
have_ptrace_getregset = TRIBOOL_FALSE;
|
|
else
|
|
have_ptrace_getregset = TRIBOOL_TRUE;
|
|
}
|
|
|
|
if (arm_hwcap & HWCAP_IWMMXT)
|
|
return arm_read_description (ARM_FP_TYPE_IWMMXT);
|
|
|
|
if (arm_hwcap & HWCAP_VFP)
|
|
{
|
|
/* Make sure that the kernel supports reading VFP registers. Support was
|
|
added in 2.6.30. */
|
|
int pid = inferior_ptid.lwp ();
|
|
errno = 0;
|
|
char *buf = (char *) alloca (ARM_VFP3_REGS_SIZE);
|
|
if (ptrace (PTRACE_GETVFPREGS, pid, 0, buf) < 0 && errno == EIO)
|
|
return nullptr;
|
|
|
|
/* NEON implies VFPv3-D32 or no-VFP unit. Say that we only support
|
|
Neon with VFPv3-D32. */
|
|
if (arm_hwcap & HWCAP_NEON)
|
|
return aarch32_read_description ();
|
|
else if ((arm_hwcap & (HWCAP_VFPv3 | HWCAP_VFPv3D16)) == HWCAP_VFPv3)
|
|
return arm_read_description (ARM_FP_TYPE_VFPV3);
|
|
|
|
return arm_read_description (ARM_FP_TYPE_VFPV2);
|
|
}
|
|
|
|
return this->beneath ()->read_description ();
|
|
}
|
|
|
|
/* Information describing the hardware breakpoint capabilities. */
|
|
struct arm_linux_hwbp_cap
|
|
{
|
|
gdb_byte arch;
|
|
gdb_byte max_wp_length;
|
|
gdb_byte wp_count;
|
|
gdb_byte bp_count;
|
|
};
|
|
|
|
/* Since we cannot dynamically allocate subfields of arm_linux_process_info,
|
|
assume a maximum number of supported break-/watchpoints. */
|
|
#define MAX_BPTS 16
|
|
#define MAX_WPTS 16
|
|
|
|
/* Get hold of the Hardware Breakpoint information for the target we are
|
|
attached to. Returns NULL if the kernel doesn't support Hardware
|
|
breakpoints at all, or a pointer to the information structure. */
|
|
static const struct arm_linux_hwbp_cap *
|
|
arm_linux_get_hwbp_cap (void)
|
|
{
|
|
/* The info structure we return. */
|
|
static struct arm_linux_hwbp_cap info;
|
|
|
|
/* Is INFO in a good state? -1 means that no attempt has been made to
|
|
initialize INFO; 0 means an attempt has been made, but it failed; 1
|
|
means INFO is in an initialized state. */
|
|
static int available = -1;
|
|
|
|
if (available == -1)
|
|
{
|
|
int tid;
|
|
unsigned int val;
|
|
|
|
tid = inferior_ptid.lwp ();
|
|
if (ptrace (PTRACE_GETHBPREGS, tid, 0, &val) < 0)
|
|
available = 0;
|
|
else
|
|
{
|
|
info.arch = (gdb_byte)((val >> 24) & 0xff);
|
|
info.max_wp_length = (gdb_byte)((val >> 16) & 0xff);
|
|
info.wp_count = (gdb_byte)((val >> 8) & 0xff);
|
|
info.bp_count = (gdb_byte)(val & 0xff);
|
|
|
|
if (info.wp_count > MAX_WPTS)
|
|
{
|
|
warning (_("arm-linux-gdb supports %d hardware watchpoints but target \
|
|
supports %d"), MAX_WPTS, info.wp_count);
|
|
info.wp_count = MAX_WPTS;
|
|
}
|
|
|
|
if (info.bp_count > MAX_BPTS)
|
|
{
|
|
warning (_("arm-linux-gdb supports %d hardware breakpoints but target \
|
|
supports %d"), MAX_BPTS, info.bp_count);
|
|
info.bp_count = MAX_BPTS;
|
|
}
|
|
available = (info.arch != 0);
|
|
}
|
|
}
|
|
|
|
return available == 1 ? &info : NULL;
|
|
}
|
|
|
|
/* How many hardware breakpoints are available? */
|
|
static int
|
|
arm_linux_get_hw_breakpoint_count (void)
|
|
{
|
|
const struct arm_linux_hwbp_cap *cap = arm_linux_get_hwbp_cap ();
|
|
return cap != NULL ? cap->bp_count : 0;
|
|
}
|
|
|
|
/* How many hardware watchpoints are available? */
|
|
static int
|
|
arm_linux_get_hw_watchpoint_count (void)
|
|
{
|
|
const struct arm_linux_hwbp_cap *cap = arm_linux_get_hwbp_cap ();
|
|
return cap != NULL ? cap->wp_count : 0;
|
|
}
|
|
|
|
/* Have we got a free break-/watch-point available for use? Returns -1 if
|
|
there is not an appropriate resource available, otherwise returns 1. */
|
|
int
|
|
arm_linux_nat_target::can_use_hw_breakpoint (enum bptype type,
|
|
int cnt, int ot)
|
|
{
|
|
if (type == bp_hardware_watchpoint || type == bp_read_watchpoint
|
|
|| type == bp_access_watchpoint || type == bp_watchpoint)
|
|
{
|
|
int count = arm_linux_get_hw_watchpoint_count ();
|
|
|
|
if (count == 0)
|
|
return 0;
|
|
else if (cnt + ot > count)
|
|
return -1;
|
|
}
|
|
else if (type == bp_hardware_breakpoint)
|
|
{
|
|
int count = arm_linux_get_hw_breakpoint_count ();
|
|
|
|
if (count == 0)
|
|
return 0;
|
|
else if (cnt > count)
|
|
return -1;
|
|
}
|
|
else
|
|
gdb_assert_not_reached ("unknown breakpoint type");
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Enum describing the different types of ARM hardware break-/watch-points. */
|
|
typedef enum
|
|
{
|
|
arm_hwbp_break = 0,
|
|
arm_hwbp_load = 1,
|
|
arm_hwbp_store = 2,
|
|
arm_hwbp_access = 3
|
|
} arm_hwbp_type;
|
|
|
|
/* Type describing an ARM Hardware Breakpoint Control register value. */
|
|
typedef unsigned int arm_hwbp_control_t;
|
|
|
|
/* Structure used to keep track of hardware break-/watch-points. */
|
|
struct arm_linux_hw_breakpoint
|
|
{
|
|
/* Address to break on, or being watched. */
|
|
unsigned int address;
|
|
/* Control register for break-/watch- point. */
|
|
arm_hwbp_control_t control;
|
|
};
|
|
|
|
/* Structure containing arrays of per process hardware break-/watchpoints
|
|
for caching address and control information.
|
|
|
|
The Linux ptrace interface to hardware break-/watch-points presents the
|
|
values in a vector centred around 0 (which is used fo generic information).
|
|
Positive indicies refer to breakpoint addresses/control registers, negative
|
|
indices to watchpoint addresses/control registers.
|
|
|
|
The Linux vector is indexed as follows:
|
|
-((i << 1) + 2): Control register for watchpoint i.
|
|
-((i << 1) + 1): Address register for watchpoint i.
|
|
0: Information register.
|
|
((i << 1) + 1): Address register for breakpoint i.
|
|
((i << 1) + 2): Control register for breakpoint i.
|
|
|
|
This structure is used as a per-thread cache of the state stored by the
|
|
kernel, so that we don't need to keep calling into the kernel to find a
|
|
free breakpoint.
|
|
|
|
We treat break-/watch-points with their enable bit clear as being deleted.
|
|
*/
|
|
struct arm_linux_debug_reg_state
|
|
{
|
|
/* Hardware breakpoints for this process. */
|
|
struct arm_linux_hw_breakpoint bpts[MAX_BPTS];
|
|
/* Hardware watchpoints for this process. */
|
|
struct arm_linux_hw_breakpoint wpts[MAX_WPTS];
|
|
};
|
|
|
|
/* Per-process arch-specific data we want to keep. */
|
|
struct arm_linux_process_info
|
|
{
|
|
/* Linked list. */
|
|
struct arm_linux_process_info *next;
|
|
/* The process identifier. */
|
|
pid_t pid;
|
|
/* Hardware break-/watchpoints state information. */
|
|
struct arm_linux_debug_reg_state state;
|
|
|
|
};
|
|
|
|
/* Per-thread arch-specific data we want to keep. */
|
|
struct arch_lwp_info
|
|
{
|
|
/* Non-zero if our copy differs from what's recorded in the thread. */
|
|
char bpts_changed[MAX_BPTS];
|
|
char wpts_changed[MAX_WPTS];
|
|
};
|
|
|
|
static struct arm_linux_process_info *arm_linux_process_list = NULL;
|
|
|
|
/* Find process data for process PID. */
|
|
|
|
static struct arm_linux_process_info *
|
|
arm_linux_find_process_pid (pid_t pid)
|
|
{
|
|
struct arm_linux_process_info *proc;
|
|
|
|
for (proc = arm_linux_process_list; proc; proc = proc->next)
|
|
if (proc->pid == pid)
|
|
return proc;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Add process data for process PID. Returns newly allocated info
|
|
object. */
|
|
|
|
static struct arm_linux_process_info *
|
|
arm_linux_add_process (pid_t pid)
|
|
{
|
|
struct arm_linux_process_info *proc;
|
|
|
|
proc = XCNEW (struct arm_linux_process_info);
|
|
proc->pid = pid;
|
|
|
|
proc->next = arm_linux_process_list;
|
|
arm_linux_process_list = proc;
|
|
|
|
return proc;
|
|
}
|
|
|
|
/* Get data specific info for process PID, creating it if necessary.
|
|
Never returns NULL. */
|
|
|
|
static struct arm_linux_process_info *
|
|
arm_linux_process_info_get (pid_t pid)
|
|
{
|
|
struct arm_linux_process_info *proc;
|
|
|
|
proc = arm_linux_find_process_pid (pid);
|
|
if (proc == NULL)
|
|
proc = arm_linux_add_process (pid);
|
|
|
|
return proc;
|
|
}
|
|
|
|
/* Called whenever GDB is no longer debugging process PID. It deletes
|
|
data structures that keep track of debug register state. */
|
|
|
|
void
|
|
arm_linux_nat_target::low_forget_process (pid_t pid)
|
|
{
|
|
struct arm_linux_process_info *proc, **proc_link;
|
|
|
|
proc = arm_linux_process_list;
|
|
proc_link = &arm_linux_process_list;
|
|
|
|
while (proc != NULL)
|
|
{
|
|
if (proc->pid == pid)
|
|
{
|
|
*proc_link = proc->next;
|
|
|
|
xfree (proc);
|
|
return;
|
|
}
|
|
|
|
proc_link = &proc->next;
|
|
proc = *proc_link;
|
|
}
|
|
}
|
|
|
|
/* Get hardware break-/watchpoint state for process PID. */
|
|
|
|
static struct arm_linux_debug_reg_state *
|
|
arm_linux_get_debug_reg_state (pid_t pid)
|
|
{
|
|
return &arm_linux_process_info_get (pid)->state;
|
|
}
|
|
|
|
/* Initialize an ARM hardware break-/watch-point control register value.
|
|
BYTE_ADDRESS_SELECT is the mask of bytes to trigger on; HWBP_TYPE is the
|
|
type of break-/watch-point; ENABLE indicates whether the point is enabled.
|
|
*/
|
|
static arm_hwbp_control_t
|
|
arm_hwbp_control_initialize (unsigned byte_address_select,
|
|
arm_hwbp_type hwbp_type,
|
|
int enable)
|
|
{
|
|
gdb_assert ((byte_address_select & ~0xffU) == 0);
|
|
gdb_assert (hwbp_type != arm_hwbp_break
|
|
|| ((byte_address_select & 0xfU) != 0));
|
|
|
|
return (byte_address_select << 5) | (hwbp_type << 3) | (3 << 1) | enable;
|
|
}
|
|
|
|
/* Does the breakpoint control value CONTROL have the enable bit set? */
|
|
static int
|
|
arm_hwbp_control_is_enabled (arm_hwbp_control_t control)
|
|
{
|
|
return control & 0x1;
|
|
}
|
|
|
|
/* Change a breakpoint control word so that it is in the disabled state. */
|
|
static arm_hwbp_control_t
|
|
arm_hwbp_control_disable (arm_hwbp_control_t control)
|
|
{
|
|
return control & ~0x1;
|
|
}
|
|
|
|
/* Initialise the hardware breakpoint structure P. The breakpoint will be
|
|
enabled, and will point to the placed address of BP_TGT. */
|
|
static void
|
|
arm_linux_hw_breakpoint_initialize (struct gdbarch *gdbarch,
|
|
struct bp_target_info *bp_tgt,
|
|
struct arm_linux_hw_breakpoint *p)
|
|
{
|
|
unsigned mask;
|
|
CORE_ADDR address = bp_tgt->placed_address = bp_tgt->reqstd_address;
|
|
|
|
/* We have to create a mask for the control register which says which bits
|
|
of the word pointed to by address to break on. */
|
|
if (arm_pc_is_thumb (gdbarch, address))
|
|
{
|
|
mask = 0x3;
|
|
address &= ~1;
|
|
}
|
|
else
|
|
{
|
|
mask = 0xf;
|
|
address &= ~3;
|
|
}
|
|
|
|
p->address = (unsigned int) address;
|
|
p->control = arm_hwbp_control_initialize (mask, arm_hwbp_break, 1);
|
|
}
|
|
|
|
/* Get the ARM hardware breakpoint type from the TYPE value we're
|
|
given when asked to set a watchpoint. */
|
|
static arm_hwbp_type
|
|
arm_linux_get_hwbp_type (enum target_hw_bp_type type)
|
|
{
|
|
if (type == hw_read)
|
|
return arm_hwbp_load;
|
|
else if (type == hw_write)
|
|
return arm_hwbp_store;
|
|
else
|
|
return arm_hwbp_access;
|
|
}
|
|
|
|
/* Initialize the hardware breakpoint structure P for a watchpoint at ADDR
|
|
to LEN. The type of watchpoint is given in RW. */
|
|
static void
|
|
arm_linux_hw_watchpoint_initialize (CORE_ADDR addr, int len,
|
|
enum target_hw_bp_type type,
|
|
struct arm_linux_hw_breakpoint *p)
|
|
{
|
|
const struct arm_linux_hwbp_cap *cap = arm_linux_get_hwbp_cap ();
|
|
unsigned mask;
|
|
|
|
gdb_assert (cap != NULL);
|
|
gdb_assert (cap->max_wp_length != 0);
|
|
|
|
mask = (1 << len) - 1;
|
|
|
|
p->address = (unsigned int) addr;
|
|
p->control = arm_hwbp_control_initialize (mask,
|
|
arm_linux_get_hwbp_type (type), 1);
|
|
}
|
|
|
|
/* Are two break-/watch-points equal? */
|
|
static int
|
|
arm_linux_hw_breakpoint_equal (const struct arm_linux_hw_breakpoint *p1,
|
|
const struct arm_linux_hw_breakpoint *p2)
|
|
{
|
|
return p1->address == p2->address && p1->control == p2->control;
|
|
}
|
|
|
|
/* Callback to mark a watch-/breakpoint to be updated in all threads of
|
|
the current process. */
|
|
|
|
static int
|
|
update_registers_callback (struct lwp_info *lwp, int watch, int index)
|
|
{
|
|
if (lwp->arch_private == NULL)
|
|
lwp->arch_private = XCNEW (struct arch_lwp_info);
|
|
|
|
/* The actual update is done later just before resuming the lwp,
|
|
we just mark that the registers need updating. */
|
|
if (watch)
|
|
lwp->arch_private->wpts_changed[index] = 1;
|
|
else
|
|
lwp->arch_private->bpts_changed[index] = 1;
|
|
|
|
/* If the lwp isn't stopped, force it to momentarily pause, so
|
|
we can update its breakpoint registers. */
|
|
if (!lwp->stopped)
|
|
linux_stop_lwp (lwp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Insert the hardware breakpoint (WATCHPOINT = 0) or watchpoint (WATCHPOINT
|
|
=1) BPT for thread TID. */
|
|
static void
|
|
arm_linux_insert_hw_breakpoint1 (const struct arm_linux_hw_breakpoint* bpt,
|
|
int watchpoint)
|
|
{
|
|
int pid;
|
|
ptid_t pid_ptid;
|
|
gdb_byte count, i;
|
|
struct arm_linux_hw_breakpoint* bpts;
|
|
|
|
pid = inferior_ptid.pid ();
|
|
pid_ptid = ptid_t (pid);
|
|
|
|
if (watchpoint)
|
|
{
|
|
count = arm_linux_get_hw_watchpoint_count ();
|
|
bpts = arm_linux_get_debug_reg_state (pid)->wpts;
|
|
}
|
|
else
|
|
{
|
|
count = arm_linux_get_hw_breakpoint_count ();
|
|
bpts = arm_linux_get_debug_reg_state (pid)->bpts;
|
|
}
|
|
|
|
for (i = 0; i < count; ++i)
|
|
if (!arm_hwbp_control_is_enabled (bpts[i].control))
|
|
{
|
|
bpts[i] = *bpt;
|
|
iterate_over_lwps (pid_ptid,
|
|
[=] (struct lwp_info *info)
|
|
{
|
|
return update_registers_callback (info, watchpoint,
|
|
i);
|
|
});
|
|
break;
|
|
}
|
|
|
|
gdb_assert (i != count);
|
|
}
|
|
|
|
/* Remove the hardware breakpoint (WATCHPOINT = 0) or watchpoint
|
|
(WATCHPOINT = 1) BPT for thread TID. */
|
|
static void
|
|
arm_linux_remove_hw_breakpoint1 (const struct arm_linux_hw_breakpoint *bpt,
|
|
int watchpoint)
|
|
{
|
|
int pid;
|
|
gdb_byte count, i;
|
|
ptid_t pid_ptid;
|
|
struct arm_linux_hw_breakpoint* bpts;
|
|
|
|
pid = inferior_ptid.pid ();
|
|
pid_ptid = ptid_t (pid);
|
|
|
|
if (watchpoint)
|
|
{
|
|
count = arm_linux_get_hw_watchpoint_count ();
|
|
bpts = arm_linux_get_debug_reg_state (pid)->wpts;
|
|
}
|
|
else
|
|
{
|
|
count = arm_linux_get_hw_breakpoint_count ();
|
|
bpts = arm_linux_get_debug_reg_state (pid)->bpts;
|
|
}
|
|
|
|
for (i = 0; i < count; ++i)
|
|
if (arm_linux_hw_breakpoint_equal (bpt, bpts + i))
|
|
{
|
|
bpts[i].control = arm_hwbp_control_disable (bpts[i].control);
|
|
iterate_over_lwps (pid_ptid,
|
|
[=] (struct lwp_info *info)
|
|
{
|
|
return update_registers_callback (info, watchpoint,
|
|
i);
|
|
});
|
|
break;
|
|
}
|
|
|
|
gdb_assert (i != count);
|
|
}
|
|
|
|
/* Insert a Hardware breakpoint. */
|
|
int
|
|
arm_linux_nat_target::insert_hw_breakpoint (struct gdbarch *gdbarch,
|
|
struct bp_target_info *bp_tgt)
|
|
{
|
|
struct arm_linux_hw_breakpoint p;
|
|
|
|
if (arm_linux_get_hw_breakpoint_count () == 0)
|
|
return -1;
|
|
|
|
arm_linux_hw_breakpoint_initialize (gdbarch, bp_tgt, &p);
|
|
|
|
arm_linux_insert_hw_breakpoint1 (&p, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Remove a hardware breakpoint. */
|
|
int
|
|
arm_linux_nat_target::remove_hw_breakpoint (struct gdbarch *gdbarch,
|
|
struct bp_target_info *bp_tgt)
|
|
{
|
|
struct arm_linux_hw_breakpoint p;
|
|
|
|
if (arm_linux_get_hw_breakpoint_count () == 0)
|
|
return -1;
|
|
|
|
arm_linux_hw_breakpoint_initialize (gdbarch, bp_tgt, &p);
|
|
|
|
arm_linux_remove_hw_breakpoint1 (&p, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Are we able to use a hardware watchpoint for the LEN bytes starting at
|
|
ADDR? */
|
|
int
|
|
arm_linux_nat_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
|
|
{
|
|
const struct arm_linux_hwbp_cap *cap = arm_linux_get_hwbp_cap ();
|
|
CORE_ADDR max_wp_length, aligned_addr;
|
|
|
|
/* Can not set watchpoints for zero or negative lengths. */
|
|
if (len <= 0)
|
|
return 0;
|
|
|
|
/* Need to be able to use the ptrace interface. */
|
|
if (cap == NULL || cap->wp_count == 0)
|
|
return 0;
|
|
|
|
/* Test that the range [ADDR, ADDR + LEN) fits into the largest address
|
|
range covered by a watchpoint. */
|
|
max_wp_length = (CORE_ADDR)cap->max_wp_length;
|
|
aligned_addr = addr & ~(max_wp_length - 1);
|
|
|
|
if (aligned_addr + max_wp_length < addr + len)
|
|
return 0;
|
|
|
|
/* The current ptrace interface can only handle watchpoints that are a
|
|
power of 2. */
|
|
if ((len & (len - 1)) != 0)
|
|
return 0;
|
|
|
|
/* All tests passed so we must be able to set a watchpoint. */
|
|
return 1;
|
|
}
|
|
|
|
/* Insert a Hardware breakpoint. */
|
|
int
|
|
arm_linux_nat_target::insert_watchpoint (CORE_ADDR addr, int len,
|
|
enum target_hw_bp_type rw,
|
|
struct expression *cond)
|
|
{
|
|
struct arm_linux_hw_breakpoint p;
|
|
|
|
if (arm_linux_get_hw_watchpoint_count () == 0)
|
|
return -1;
|
|
|
|
arm_linux_hw_watchpoint_initialize (addr, len, rw, &p);
|
|
|
|
arm_linux_insert_hw_breakpoint1 (&p, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Remove a hardware breakpoint. */
|
|
int
|
|
arm_linux_nat_target::remove_watchpoint (CORE_ADDR addr,
|
|
int len, enum target_hw_bp_type rw,
|
|
struct expression *cond)
|
|
{
|
|
struct arm_linux_hw_breakpoint p;
|
|
|
|
if (arm_linux_get_hw_watchpoint_count () == 0)
|
|
return -1;
|
|
|
|
arm_linux_hw_watchpoint_initialize (addr, len, rw, &p);
|
|
|
|
arm_linux_remove_hw_breakpoint1 (&p, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* What was the data address the target was stopped on accessing. */
|
|
bool
|
|
arm_linux_nat_target::stopped_data_address (CORE_ADDR *addr_p)
|
|
{
|
|
siginfo_t siginfo;
|
|
int slot;
|
|
|
|
if (!linux_nat_get_siginfo (inferior_ptid, &siginfo))
|
|
return false;
|
|
|
|
/* This must be a hardware breakpoint. */
|
|
if (siginfo.si_signo != SIGTRAP
|
|
|| (siginfo.si_code & 0xffff) != 0x0004 /* TRAP_HWBKPT */)
|
|
return false;
|
|
|
|
/* We must be able to set hardware watchpoints. */
|
|
if (arm_linux_get_hw_watchpoint_count () == 0)
|
|
return 0;
|
|
|
|
slot = siginfo.si_errno;
|
|
|
|
/* If we are in a positive slot then we're looking at a breakpoint and not
|
|
a watchpoint. */
|
|
if (slot >= 0)
|
|
return false;
|
|
|
|
*addr_p = (CORE_ADDR) (uintptr_t) siginfo.si_addr;
|
|
return true;
|
|
}
|
|
|
|
/* Has the target been stopped by hitting a watchpoint? */
|
|
bool
|
|
arm_linux_nat_target::stopped_by_watchpoint ()
|
|
{
|
|
CORE_ADDR addr;
|
|
return stopped_data_address (&addr);
|
|
}
|
|
|
|
bool
|
|
arm_linux_nat_target::watchpoint_addr_within_range (CORE_ADDR addr,
|
|
CORE_ADDR start,
|
|
int length)
|
|
{
|
|
return start <= addr && start + length - 1 >= addr;
|
|
}
|
|
|
|
/* Handle thread creation. We need to copy the breakpoints and watchpoints
|
|
in the parent thread to the child thread. */
|
|
void
|
|
arm_linux_nat_target::low_new_thread (struct lwp_info *lp)
|
|
{
|
|
int i;
|
|
struct arch_lwp_info *info = XCNEW (struct arch_lwp_info);
|
|
|
|
/* Mark that all the hardware breakpoint/watchpoint register pairs
|
|
for this thread need to be initialized. */
|
|
|
|
for (i = 0; i < MAX_BPTS; i++)
|
|
{
|
|
info->bpts_changed[i] = 1;
|
|
info->wpts_changed[i] = 1;
|
|
}
|
|
|
|
lp->arch_private = info;
|
|
}
|
|
|
|
/* Function to call when a thread is being deleted. */
|
|
|
|
void
|
|
arm_linux_nat_target::low_delete_thread (struct arch_lwp_info *arch_lwp)
|
|
{
|
|
xfree (arch_lwp);
|
|
}
|
|
|
|
/* Called when resuming a thread.
|
|
The hardware debug registers are updated when there is any change. */
|
|
|
|
void
|
|
arm_linux_nat_target::low_prepare_to_resume (struct lwp_info *lwp)
|
|
{
|
|
int pid, i;
|
|
struct arm_linux_hw_breakpoint *bpts, *wpts;
|
|
struct arch_lwp_info *arm_lwp_info = lwp->arch_private;
|
|
|
|
pid = lwp->ptid.lwp ();
|
|
bpts = arm_linux_get_debug_reg_state (lwp->ptid.pid ())->bpts;
|
|
wpts = arm_linux_get_debug_reg_state (lwp->ptid.pid ())->wpts;
|
|
|
|
/* 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 (arm_lwp_info == NULL)
|
|
return;
|
|
|
|
for (i = 0; i < arm_linux_get_hw_breakpoint_count (); i++)
|
|
if (arm_lwp_info->bpts_changed[i])
|
|
{
|
|
errno = 0;
|
|
if (arm_hwbp_control_is_enabled (bpts[i].control))
|
|
if (ptrace (PTRACE_SETHBPREGS, pid,
|
|
(PTRACE_TYPE_ARG3) ((i << 1) + 1), &bpts[i].address) < 0)
|
|
perror_with_name (_("Unexpected error setting breakpoint"));
|
|
|
|
if (bpts[i].control != 0)
|
|
if (ptrace (PTRACE_SETHBPREGS, pid,
|
|
(PTRACE_TYPE_ARG3) ((i << 1) + 2), &bpts[i].control) < 0)
|
|
perror_with_name (_("Unexpected error setting breakpoint"));
|
|
|
|
arm_lwp_info->bpts_changed[i] = 0;
|
|
}
|
|
|
|
for (i = 0; i < arm_linux_get_hw_watchpoint_count (); i++)
|
|
if (arm_lwp_info->wpts_changed[i])
|
|
{
|
|
errno = 0;
|
|
if (arm_hwbp_control_is_enabled (wpts[i].control))
|
|
if (ptrace (PTRACE_SETHBPREGS, pid,
|
|
(PTRACE_TYPE_ARG3) -((i << 1) + 1), &wpts[i].address) < 0)
|
|
perror_with_name (_("Unexpected error setting watchpoint"));
|
|
|
|
if (wpts[i].control != 0)
|
|
if (ptrace (PTRACE_SETHBPREGS, pid,
|
|
(PTRACE_TYPE_ARG3) -((i << 1) + 2), &wpts[i].control) < 0)
|
|
perror_with_name (_("Unexpected error setting watchpoint"));
|
|
|
|
arm_lwp_info->wpts_changed[i] = 0;
|
|
}
|
|
}
|
|
|
|
/* linux_nat_new_fork hook. */
|
|
|
|
void
|
|
arm_linux_nat_target::low_new_fork (struct lwp_info *parent, pid_t child_pid)
|
|
{
|
|
pid_t parent_pid;
|
|
struct arm_linux_debug_reg_state *parent_state;
|
|
struct arm_linux_debug_reg_state *child_state;
|
|
|
|
/* NULL means no watchpoint has ever been set in the parent. In
|
|
that case, there's nothing to do. */
|
|
if (parent->arch_private == NULL)
|
|
return;
|
|
|
|
/* GDB core assumes the child inherits the watchpoints/hw
|
|
breakpoints of the parent, and will remove them all from the
|
|
forked off process. Copy the debug registers mirrors into the
|
|
new process so that all breakpoints and watchpoints can be
|
|
removed together. */
|
|
|
|
parent_pid = parent->ptid.pid ();
|
|
parent_state = arm_linux_get_debug_reg_state (parent_pid);
|
|
child_state = arm_linux_get_debug_reg_state (child_pid);
|
|
*child_state = *parent_state;
|
|
}
|
|
|
|
void _initialize_arm_linux_nat ();
|
|
void
|
|
_initialize_arm_linux_nat ()
|
|
{
|
|
/* Register the target. */
|
|
linux_target = &the_arm_linux_nat_target;
|
|
add_inf_child_target (&the_arm_linux_nat_target);
|
|
}
|