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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
2524 lines
76 KiB
C
2524 lines
76 KiB
C
/* Target-dependent code for GNU/Linux, architecture independent.
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Copyright (C) 2009-2020 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 "gdbtypes.h"
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#include "linux-tdep.h"
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#include "auxv.h"
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#include "target.h"
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#include "gdbthread.h"
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#include "gdbcore.h"
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#include "regcache.h"
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#include "regset.h"
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#include "elf/common.h"
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#include "elf-bfd.h" /* for elfcore_write_* */
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#include "inferior.h"
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#include "cli/cli-utils.h"
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#include "arch-utils.h"
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#include "gdb_obstack.h"
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#include "observable.h"
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#include "objfiles.h"
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#include "infcall.h"
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#include "gdbcmd.h"
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#include "gdb_regex.h"
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#include "gdbsupport/enum-flags.h"
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#include "gdbsupport/gdb_optional.h"
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#include <ctype.h>
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/* This enum represents the values that the user can choose when
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informing the Linux kernel about which memory mappings will be
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dumped in a corefile. They are described in the file
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Documentation/filesystems/proc.txt, inside the Linux kernel
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tree. */
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enum filter_flag
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{
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COREFILTER_ANON_PRIVATE = 1 << 0,
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COREFILTER_ANON_SHARED = 1 << 1,
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COREFILTER_MAPPED_PRIVATE = 1 << 2,
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COREFILTER_MAPPED_SHARED = 1 << 3,
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COREFILTER_ELF_HEADERS = 1 << 4,
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COREFILTER_HUGETLB_PRIVATE = 1 << 5,
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COREFILTER_HUGETLB_SHARED = 1 << 6,
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};
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DEF_ENUM_FLAGS_TYPE (enum filter_flag, filter_flags);
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/* This struct is used to map flags found in the "VmFlags:" field (in
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the /proc/<PID>/smaps file). */
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struct smaps_vmflags
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{
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/* Zero if this structure has not been initialized yet. It
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probably means that the Linux kernel being used does not emit
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the "VmFlags:" field on "/proc/PID/smaps". */
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unsigned int initialized_p : 1;
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/* Memory mapped I/O area (VM_IO, "io"). */
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unsigned int io_page : 1;
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/* Area uses huge TLB pages (VM_HUGETLB, "ht"). */
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unsigned int uses_huge_tlb : 1;
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/* Do not include this memory region on the coredump (VM_DONTDUMP, "dd"). */
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unsigned int exclude_coredump : 1;
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/* Is this a MAP_SHARED mapping (VM_SHARED, "sh"). */
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unsigned int shared_mapping : 1;
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};
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/* Whether to take the /proc/PID/coredump_filter into account when
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generating a corefile. */
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static bool use_coredump_filter = true;
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/* Whether the value of smaps_vmflags->exclude_coredump should be
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ignored, including mappings marked with the VM_DONTDUMP flag in
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the dump. */
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static bool dump_excluded_mappings = false;
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/* This enum represents the signals' numbers on a generic architecture
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running the Linux kernel. The definition of "generic" comes from
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the file <include/uapi/asm-generic/signal.h>, from the Linux kernel
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tree, which is the "de facto" implementation of signal numbers to
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be used by new architecture ports.
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For those architectures which have differences between the generic
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standard (e.g., Alpha), we define the different signals (and *only*
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those) in the specific target-dependent file (e.g.,
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alpha-linux-tdep.c, for Alpha). Please refer to the architecture's
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tdep file for more information.
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ARM deserves a special mention here. On the file
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<arch/arm/include/uapi/asm/signal.h>, it defines only one different
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(and ARM-only) signal, which is SIGSWI, with the same number as
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SIGRTMIN. This signal is used only for a very specific target,
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called ArthurOS (from RISCOS). Therefore, we do not handle it on
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the ARM-tdep file, and we can safely use the generic signal handler
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here for ARM targets.
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As stated above, this enum is derived from
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<include/uapi/asm-generic/signal.h>, from the Linux kernel
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tree. */
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enum
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{
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LINUX_SIGHUP = 1,
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LINUX_SIGINT = 2,
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LINUX_SIGQUIT = 3,
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LINUX_SIGILL = 4,
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LINUX_SIGTRAP = 5,
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LINUX_SIGABRT = 6,
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LINUX_SIGIOT = 6,
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LINUX_SIGBUS = 7,
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LINUX_SIGFPE = 8,
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LINUX_SIGKILL = 9,
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LINUX_SIGUSR1 = 10,
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LINUX_SIGSEGV = 11,
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LINUX_SIGUSR2 = 12,
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LINUX_SIGPIPE = 13,
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LINUX_SIGALRM = 14,
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LINUX_SIGTERM = 15,
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LINUX_SIGSTKFLT = 16,
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LINUX_SIGCHLD = 17,
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LINUX_SIGCONT = 18,
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LINUX_SIGSTOP = 19,
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LINUX_SIGTSTP = 20,
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LINUX_SIGTTIN = 21,
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LINUX_SIGTTOU = 22,
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LINUX_SIGURG = 23,
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LINUX_SIGXCPU = 24,
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LINUX_SIGXFSZ = 25,
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LINUX_SIGVTALRM = 26,
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LINUX_SIGPROF = 27,
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LINUX_SIGWINCH = 28,
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LINUX_SIGIO = 29,
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LINUX_SIGPOLL = LINUX_SIGIO,
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LINUX_SIGPWR = 30,
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LINUX_SIGSYS = 31,
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LINUX_SIGUNUSED = 31,
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LINUX_SIGRTMIN = 32,
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LINUX_SIGRTMAX = 64,
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};
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static struct gdbarch_data *linux_gdbarch_data_handle;
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struct linux_gdbarch_data
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{
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struct type *siginfo_type;
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};
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static void *
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init_linux_gdbarch_data (struct gdbarch *gdbarch)
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{
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return GDBARCH_OBSTACK_ZALLOC (gdbarch, struct linux_gdbarch_data);
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}
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static struct linux_gdbarch_data *
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get_linux_gdbarch_data (struct gdbarch *gdbarch)
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{
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return ((struct linux_gdbarch_data *)
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gdbarch_data (gdbarch, linux_gdbarch_data_handle));
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}
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/* Linux-specific cached data. This is used by GDB for caching
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purposes for each inferior. This helps reduce the overhead of
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transfering data from a remote target to the local host. */
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struct linux_info
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{
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/* Cache of the inferior's vsyscall/vDSO mapping range. Only valid
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if VSYSCALL_RANGE_P is positive. This is cached because getting
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at this info requires an auxv lookup (which is itself cached),
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and looking through the inferior's mappings (which change
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throughout execution and therefore cannot be cached). */
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struct mem_range vsyscall_range {};
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/* Zero if we haven't tried looking up the vsyscall's range before
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yet. Positive if we tried looking it up, and found it. Negative
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if we tried looking it up but failed. */
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int vsyscall_range_p = 0;
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};
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/* Per-inferior data key. */
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static const struct inferior_key<linux_info> linux_inferior_data;
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/* Frees whatever allocated space there is to be freed and sets INF's
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linux cache data pointer to NULL. */
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static void
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invalidate_linux_cache_inf (struct inferior *inf)
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{
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linux_inferior_data.clear (inf);
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}
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/* Fetch the linux cache info for INF. This function always returns a
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valid INFO pointer. */
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static struct linux_info *
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get_linux_inferior_data (void)
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{
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struct linux_info *info;
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struct inferior *inf = current_inferior ();
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info = linux_inferior_data.get (inf);
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if (info == NULL)
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info = linux_inferior_data.emplace (inf);
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return info;
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}
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/* See linux-tdep.h. */
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struct type *
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linux_get_siginfo_type_with_fields (struct gdbarch *gdbarch,
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linux_siginfo_extra_fields extra_fields)
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{
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struct linux_gdbarch_data *linux_gdbarch_data;
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struct type *int_type, *uint_type, *long_type, *void_ptr_type, *short_type;
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struct type *uid_type, *pid_type;
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struct type *sigval_type, *clock_type;
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struct type *siginfo_type, *sifields_type;
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struct type *type;
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linux_gdbarch_data = get_linux_gdbarch_data (gdbarch);
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if (linux_gdbarch_data->siginfo_type != NULL)
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return linux_gdbarch_data->siginfo_type;
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int_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
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0, "int");
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uint_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
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1, "unsigned int");
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long_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
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0, "long");
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short_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
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0, "short");
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void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void);
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/* sival_t */
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sigval_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
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TYPE_NAME (sigval_type) = xstrdup ("sigval_t");
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append_composite_type_field (sigval_type, "sival_int", int_type);
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append_composite_type_field (sigval_type, "sival_ptr", void_ptr_type);
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/* __pid_t */
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pid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
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TYPE_LENGTH (int_type) * TARGET_CHAR_BIT, "__pid_t");
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TYPE_TARGET_TYPE (pid_type) = int_type;
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TYPE_TARGET_STUB (pid_type) = 1;
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/* __uid_t */
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uid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
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TYPE_LENGTH (uint_type) * TARGET_CHAR_BIT, "__uid_t");
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TYPE_TARGET_TYPE (uid_type) = uint_type;
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TYPE_TARGET_STUB (uid_type) = 1;
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/* __clock_t */
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clock_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
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TYPE_LENGTH (long_type) * TARGET_CHAR_BIT,
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"__clock_t");
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TYPE_TARGET_TYPE (clock_type) = long_type;
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TYPE_TARGET_STUB (clock_type) = 1;
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/* _sifields */
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sifields_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
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{
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const int si_max_size = 128;
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int si_pad_size;
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int size_of_int = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT;
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/* _pad */
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if (gdbarch_ptr_bit (gdbarch) == 64)
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si_pad_size = (si_max_size / size_of_int) - 4;
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else
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si_pad_size = (si_max_size / size_of_int) - 3;
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append_composite_type_field (sifields_type, "_pad",
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init_vector_type (int_type, si_pad_size));
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}
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/* _kill */
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type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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append_composite_type_field (type, "si_pid", pid_type);
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append_composite_type_field (type, "si_uid", uid_type);
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append_composite_type_field (sifields_type, "_kill", type);
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/* _timer */
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type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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append_composite_type_field (type, "si_tid", int_type);
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append_composite_type_field (type, "si_overrun", int_type);
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append_composite_type_field (type, "si_sigval", sigval_type);
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append_composite_type_field (sifields_type, "_timer", type);
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/* _rt */
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type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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append_composite_type_field (type, "si_pid", pid_type);
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append_composite_type_field (type, "si_uid", uid_type);
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append_composite_type_field (type, "si_sigval", sigval_type);
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append_composite_type_field (sifields_type, "_rt", type);
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/* _sigchld */
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type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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append_composite_type_field (type, "si_pid", pid_type);
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append_composite_type_field (type, "si_uid", uid_type);
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append_composite_type_field (type, "si_status", int_type);
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append_composite_type_field (type, "si_utime", clock_type);
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append_composite_type_field (type, "si_stime", clock_type);
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append_composite_type_field (sifields_type, "_sigchld", type);
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/* _sigfault */
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type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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append_composite_type_field (type, "si_addr", void_ptr_type);
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/* Additional bound fields for _sigfault in case they were requested. */
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if ((extra_fields & LINUX_SIGINFO_FIELD_ADDR_BND) != 0)
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{
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struct type *sigfault_bnd_fields;
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append_composite_type_field (type, "_addr_lsb", short_type);
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sigfault_bnd_fields = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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append_composite_type_field (sigfault_bnd_fields, "_lower", void_ptr_type);
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append_composite_type_field (sigfault_bnd_fields, "_upper", void_ptr_type);
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append_composite_type_field (type, "_addr_bnd", sigfault_bnd_fields);
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}
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append_composite_type_field (sifields_type, "_sigfault", type);
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/* _sigpoll */
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type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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append_composite_type_field (type, "si_band", long_type);
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append_composite_type_field (type, "si_fd", int_type);
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append_composite_type_field (sifields_type, "_sigpoll", type);
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/* struct siginfo */
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siginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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TYPE_NAME (siginfo_type) = xstrdup ("siginfo");
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append_composite_type_field (siginfo_type, "si_signo", int_type);
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append_composite_type_field (siginfo_type, "si_errno", int_type);
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append_composite_type_field (siginfo_type, "si_code", int_type);
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append_composite_type_field_aligned (siginfo_type,
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"_sifields", sifields_type,
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TYPE_LENGTH (long_type));
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linux_gdbarch_data->siginfo_type = siginfo_type;
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return siginfo_type;
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}
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/* This function is suitable for architectures that don't
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extend/override the standard siginfo structure. */
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static struct type *
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linux_get_siginfo_type (struct gdbarch *gdbarch)
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{
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return linux_get_siginfo_type_with_fields (gdbarch, 0);
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}
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|
|
/* Return true if the target is running on uClinux instead of normal
|
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Linux kernel. */
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int
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linux_is_uclinux (void)
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{
|
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CORE_ADDR dummy;
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return (target_auxv_search (current_top_target (), AT_NULL, &dummy) > 0
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&& target_auxv_search (current_top_target (), AT_PAGESZ, &dummy) == 0);
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}
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|
|
static int
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linux_has_shared_address_space (struct gdbarch *gdbarch)
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{
|
|
return linux_is_uclinux ();
|
|
}
|
|
|
|
/* This is how we want PTIDs from core files to be printed. */
|
|
|
|
static std::string
|
|
linux_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid)
|
|
{
|
|
if (ptid.lwp () != 0)
|
|
return string_printf ("LWP %ld", ptid.lwp ());
|
|
|
|
return normal_pid_to_str (ptid);
|
|
}
|
|
|
|
/* Service function for corefiles and info proc. */
|
|
|
|
static void
|
|
read_mapping (const char *line,
|
|
ULONGEST *addr, ULONGEST *endaddr,
|
|
const char **permissions, size_t *permissions_len,
|
|
ULONGEST *offset,
|
|
const char **device, size_t *device_len,
|
|
ULONGEST *inode,
|
|
const char **filename)
|
|
{
|
|
const char *p = line;
|
|
|
|
*addr = strtoulst (p, &p, 16);
|
|
if (*p == '-')
|
|
p++;
|
|
*endaddr = strtoulst (p, &p, 16);
|
|
|
|
p = skip_spaces (p);
|
|
*permissions = p;
|
|
while (*p && !isspace (*p))
|
|
p++;
|
|
*permissions_len = p - *permissions;
|
|
|
|
*offset = strtoulst (p, &p, 16);
|
|
|
|
p = skip_spaces (p);
|
|
*device = p;
|
|
while (*p && !isspace (*p))
|
|
p++;
|
|
*device_len = p - *device;
|
|
|
|
*inode = strtoulst (p, &p, 10);
|
|
|
|
p = skip_spaces (p);
|
|
*filename = p;
|
|
}
|
|
|
|
/* Helper function to decode the "VmFlags" field in /proc/PID/smaps.
|
|
|
|
This function was based on the documentation found on
|
|
<Documentation/filesystems/proc.txt>, on the Linux kernel.
|
|
|
|
Linux kernels before commit
|
|
834f82e2aa9a8ede94b17b656329f850c1471514 (3.10) do not have this
|
|
field on smaps. */
|
|
|
|
static void
|
|
decode_vmflags (char *p, struct smaps_vmflags *v)
|
|
{
|
|
char *saveptr = NULL;
|
|
const char *s;
|
|
|
|
v->initialized_p = 1;
|
|
p = skip_to_space (p);
|
|
p = skip_spaces (p);
|
|
|
|
for (s = strtok_r (p, " ", &saveptr);
|
|
s != NULL;
|
|
s = strtok_r (NULL, " ", &saveptr))
|
|
{
|
|
if (strcmp (s, "io") == 0)
|
|
v->io_page = 1;
|
|
else if (strcmp (s, "ht") == 0)
|
|
v->uses_huge_tlb = 1;
|
|
else if (strcmp (s, "dd") == 0)
|
|
v->exclude_coredump = 1;
|
|
else if (strcmp (s, "sh") == 0)
|
|
v->shared_mapping = 1;
|
|
}
|
|
}
|
|
|
|
/* Regexes used by mapping_is_anonymous_p. Put in a structure because
|
|
they're initialized lazily. */
|
|
|
|
struct mapping_regexes
|
|
{
|
|
/* Matches "/dev/zero" filenames (with or without the "(deleted)"
|
|
string in the end). We know for sure, based on the Linux kernel
|
|
code, that memory mappings whose associated filename is
|
|
"/dev/zero" are guaranteed to be MAP_ANONYMOUS. */
|
|
compiled_regex dev_zero
|
|
{"^/dev/zero\\( (deleted)\\)\\?$", REG_NOSUB,
|
|
_("Could not compile regex to match /dev/zero filename")};
|
|
|
|
/* Matches "/SYSV%08x" filenames (with or without the "(deleted)"
|
|
string in the end). These filenames refer to shared memory
|
|
(shmem), and memory mappings associated with them are
|
|
MAP_ANONYMOUS as well. */
|
|
compiled_regex shmem_file
|
|
{"^/\\?SYSV[0-9a-fA-F]\\{8\\}\\( (deleted)\\)\\?$", REG_NOSUB,
|
|
_("Could not compile regex to match shmem filenames")};
|
|
|
|
/* A heuristic we use to try to mimic the Linux kernel's 'n_link ==
|
|
0' code, which is responsible to decide if it is dealing with a
|
|
'MAP_SHARED | MAP_ANONYMOUS' mapping. In other words, if
|
|
FILE_DELETED matches, it does not necessarily mean that we are
|
|
dealing with an anonymous shared mapping. However, there is no
|
|
easy way to detect this currently, so this is the best
|
|
approximation we have.
|
|
|
|
As a result, GDB will dump readonly pages of deleted executables
|
|
when using the default value of coredump_filter (0x33), while the
|
|
Linux kernel will not dump those pages. But we can live with
|
|
that. */
|
|
compiled_regex file_deleted
|
|
{" (deleted)$", REG_NOSUB,
|
|
_("Could not compile regex to match '<file> (deleted)'")};
|
|
};
|
|
|
|
/* Return 1 if the memory mapping is anonymous, 0 otherwise.
|
|
|
|
FILENAME is the name of the file present in the first line of the
|
|
memory mapping, in the "/proc/PID/smaps" output. For example, if
|
|
the first line is:
|
|
|
|
7fd0ca877000-7fd0d0da0000 r--p 00000000 fd:02 2100770 /path/to/file
|
|
|
|
Then FILENAME will be "/path/to/file". */
|
|
|
|
static int
|
|
mapping_is_anonymous_p (const char *filename)
|
|
{
|
|
static gdb::optional<mapping_regexes> regexes;
|
|
static int init_regex_p = 0;
|
|
|
|
if (!init_regex_p)
|
|
{
|
|
/* Let's be pessimistic and assume there will be an error while
|
|
compiling the regex'es. */
|
|
init_regex_p = -1;
|
|
|
|
regexes.emplace ();
|
|
|
|
/* If we reached this point, then everything succeeded. */
|
|
init_regex_p = 1;
|
|
}
|
|
|
|
if (init_regex_p == -1)
|
|
{
|
|
const char deleted[] = " (deleted)";
|
|
size_t del_len = sizeof (deleted) - 1;
|
|
size_t filename_len = strlen (filename);
|
|
|
|
/* There was an error while compiling the regex'es above. In
|
|
order to try to give some reliable information to the caller,
|
|
we just try to find the string " (deleted)" in the filename.
|
|
If we managed to find it, then we assume the mapping is
|
|
anonymous. */
|
|
return (filename_len >= del_len
|
|
&& strcmp (filename + filename_len - del_len, deleted) == 0);
|
|
}
|
|
|
|
if (*filename == '\0'
|
|
|| regexes->dev_zero.exec (filename, 0, NULL, 0) == 0
|
|
|| regexes->shmem_file.exec (filename, 0, NULL, 0) == 0
|
|
|| regexes->file_deleted.exec (filename, 0, NULL, 0) == 0)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Return 0 if the memory mapping (which is related to FILTERFLAGS, V,
|
|
MAYBE_PRIVATE_P, MAPPING_ANONYMOUS_P, ADDR and OFFSET) should not
|
|
be dumped, or greater than 0 if it should.
|
|
|
|
In a nutshell, this is the logic that we follow in order to decide
|
|
if a mapping should be dumped or not.
|
|
|
|
- If the mapping is associated to a file whose name ends with
|
|
" (deleted)", or if the file is "/dev/zero", or if it is
|
|
"/SYSV%08x" (shared memory), or if there is no file associated
|
|
with it, or if the AnonHugePages: or the Anonymous: fields in the
|
|
/proc/PID/smaps have contents, then GDB considers this mapping to
|
|
be anonymous. Otherwise, GDB considers this mapping to be a
|
|
file-backed mapping (because there will be a file associated with
|
|
it).
|
|
|
|
It is worth mentioning that, from all those checks described
|
|
above, the most fragile is the one to see if the file name ends
|
|
with " (deleted)". This does not necessarily mean that the
|
|
mapping is anonymous, because the deleted file associated with
|
|
the mapping may have been a hard link to another file, for
|
|
example. The Linux kernel checks to see if "i_nlink == 0", but
|
|
GDB cannot easily (and normally) do this check (iff running as
|
|
root, it could find the mapping in /proc/PID/map_files/ and
|
|
determine whether there still are other hard links to the
|
|
inode/file). Therefore, we made a compromise here, and we assume
|
|
that if the file name ends with " (deleted)", then the mapping is
|
|
indeed anonymous. FWIW, this is something the Linux kernel could
|
|
do better: expose this information in a more direct way.
|
|
|
|
- If we see the flag "sh" in the "VmFlags:" field (in
|
|
/proc/PID/smaps), then certainly the memory mapping is shared
|
|
(VM_SHARED). If we have access to the VmFlags, and we don't see
|
|
the "sh" there, then certainly the mapping is private. However,
|
|
Linux kernels before commit
|
|
834f82e2aa9a8ede94b17b656329f850c1471514 (3.10) do not have the
|
|
"VmFlags:" field; in that case, we use another heuristic: if we
|
|
see 'p' in the permission flags, then we assume that the mapping
|
|
is private, even though the presence of the 's' flag there would
|
|
mean VM_MAYSHARE, which means the mapping could still be private.
|
|
This should work OK enough, however.
|
|
|
|
- Even if, at the end, we decided that we should not dump the
|
|
mapping, we still have to check if it is something like an ELF
|
|
header (of a DSO or an executable, for example). If it is, and
|
|
if the user is interested in dump it, then we should dump it. */
|
|
|
|
static int
|
|
dump_mapping_p (filter_flags filterflags, const struct smaps_vmflags *v,
|
|
int maybe_private_p, int mapping_anon_p, int mapping_file_p,
|
|
const char *filename, ULONGEST addr, ULONGEST offset)
|
|
{
|
|
/* Initially, we trust in what we received from our caller. This
|
|
value may not be very precise (i.e., it was probably gathered
|
|
from the permission line in the /proc/PID/smaps list, which
|
|
actually refers to VM_MAYSHARE, and not VM_SHARED), but it is
|
|
what we have until we take a look at the "VmFlags:" field
|
|
(assuming that the version of the Linux kernel being used
|
|
supports it, of course). */
|
|
int private_p = maybe_private_p;
|
|
int dump_p;
|
|
|
|
/* We always dump vDSO and vsyscall mappings, because it's likely that
|
|
there'll be no file to read the contents from at core load time.
|
|
The kernel does the same. */
|
|
if (strcmp ("[vdso]", filename) == 0
|
|
|| strcmp ("[vsyscall]", filename) == 0)
|
|
return 1;
|
|
|
|
if (v->initialized_p)
|
|
{
|
|
/* We never dump I/O mappings. */
|
|
if (v->io_page)
|
|
return 0;
|
|
|
|
/* Check if we should exclude this mapping. */
|
|
if (!dump_excluded_mappings && v->exclude_coredump)
|
|
return 0;
|
|
|
|
/* Update our notion of whether this mapping is shared or
|
|
private based on a trustworthy value. */
|
|
private_p = !v->shared_mapping;
|
|
|
|
/* HugeTLB checking. */
|
|
if (v->uses_huge_tlb)
|
|
{
|
|
if ((private_p && (filterflags & COREFILTER_HUGETLB_PRIVATE))
|
|
|| (!private_p && (filterflags & COREFILTER_HUGETLB_SHARED)))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (private_p)
|
|
{
|
|
if (mapping_anon_p && mapping_file_p)
|
|
{
|
|
/* This is a special situation. It can happen when we see a
|
|
mapping that is file-backed, but that contains anonymous
|
|
pages. */
|
|
dump_p = ((filterflags & COREFILTER_ANON_PRIVATE) != 0
|
|
|| (filterflags & COREFILTER_MAPPED_PRIVATE) != 0);
|
|
}
|
|
else if (mapping_anon_p)
|
|
dump_p = (filterflags & COREFILTER_ANON_PRIVATE) != 0;
|
|
else
|
|
dump_p = (filterflags & COREFILTER_MAPPED_PRIVATE) != 0;
|
|
}
|
|
else
|
|
{
|
|
if (mapping_anon_p && mapping_file_p)
|
|
{
|
|
/* This is a special situation. It can happen when we see a
|
|
mapping that is file-backed, but that contains anonymous
|
|
pages. */
|
|
dump_p = ((filterflags & COREFILTER_ANON_SHARED) != 0
|
|
|| (filterflags & COREFILTER_MAPPED_SHARED) != 0);
|
|
}
|
|
else if (mapping_anon_p)
|
|
dump_p = (filterflags & COREFILTER_ANON_SHARED) != 0;
|
|
else
|
|
dump_p = (filterflags & COREFILTER_MAPPED_SHARED) != 0;
|
|
}
|
|
|
|
/* Even if we decided that we shouldn't dump this mapping, we still
|
|
have to check whether (a) the user wants us to dump mappings
|
|
containing an ELF header, and (b) the mapping in question
|
|
contains an ELF header. If (a) and (b) are true, then we should
|
|
dump this mapping.
|
|
|
|
A mapping contains an ELF header if it is a private mapping, its
|
|
offset is zero, and its first word is ELFMAG. */
|
|
if (!dump_p && private_p && offset == 0
|
|
&& (filterflags & COREFILTER_ELF_HEADERS) != 0)
|
|
{
|
|
/* Let's check if we have an ELF header. */
|
|
gdb::unique_xmalloc_ptr<char> header;
|
|
int errcode;
|
|
|
|
/* Useful define specifying the size of the ELF magical
|
|
header. */
|
|
#ifndef SELFMAG
|
|
#define SELFMAG 4
|
|
#endif
|
|
|
|
/* Read the first SELFMAG bytes and check if it is ELFMAG. */
|
|
if (target_read_string (addr, &header, SELFMAG, &errcode) == SELFMAG
|
|
&& errcode == 0)
|
|
{
|
|
const char *h = header.get ();
|
|
|
|
/* The EI_MAG* and ELFMAG* constants come from
|
|
<elf/common.h>. */
|
|
if (h[EI_MAG0] == ELFMAG0 && h[EI_MAG1] == ELFMAG1
|
|
&& h[EI_MAG2] == ELFMAG2 && h[EI_MAG3] == ELFMAG3)
|
|
{
|
|
/* This mapping contains an ELF header, so we
|
|
should dump it. */
|
|
dump_p = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
return dump_p;
|
|
}
|
|
|
|
/* Implement the "info proc" command. */
|
|
|
|
static void
|
|
linux_info_proc (struct gdbarch *gdbarch, const char *args,
|
|
enum info_proc_what what)
|
|
{
|
|
/* A long is used for pid instead of an int to avoid a loss of precision
|
|
compiler warning from the output of strtoul. */
|
|
long pid;
|
|
int cmdline_f = (what == IP_MINIMAL || what == IP_CMDLINE || what == IP_ALL);
|
|
int cwd_f = (what == IP_MINIMAL || what == IP_CWD || what == IP_ALL);
|
|
int exe_f = (what == IP_MINIMAL || what == IP_EXE || what == IP_ALL);
|
|
int mappings_f = (what == IP_MAPPINGS || what == IP_ALL);
|
|
int status_f = (what == IP_STATUS || what == IP_ALL);
|
|
int stat_f = (what == IP_STAT || what == IP_ALL);
|
|
char filename[100];
|
|
int target_errno;
|
|
|
|
if (args && isdigit (args[0]))
|
|
{
|
|
char *tem;
|
|
|
|
pid = strtoul (args, &tem, 10);
|
|
args = tem;
|
|
}
|
|
else
|
|
{
|
|
if (!target_has_execution)
|
|
error (_("No current process: you must name one."));
|
|
if (current_inferior ()->fake_pid_p)
|
|
error (_("Can't determine the current process's PID: you must name one."));
|
|
|
|
pid = current_inferior ()->pid;
|
|
}
|
|
|
|
args = skip_spaces (args);
|
|
if (args && args[0])
|
|
error (_("Too many parameters: %s"), args);
|
|
|
|
printf_filtered (_("process %ld\n"), pid);
|
|
if (cmdline_f)
|
|
{
|
|
xsnprintf (filename, sizeof filename, "/proc/%ld/cmdline", pid);
|
|
gdb_byte *buffer;
|
|
ssize_t len = target_fileio_read_alloc (NULL, filename, &buffer);
|
|
|
|
if (len > 0)
|
|
{
|
|
gdb::unique_xmalloc_ptr<char> cmdline ((char *) buffer);
|
|
ssize_t pos;
|
|
|
|
for (pos = 0; pos < len - 1; pos++)
|
|
{
|
|
if (buffer[pos] == '\0')
|
|
buffer[pos] = ' ';
|
|
}
|
|
buffer[len - 1] = '\0';
|
|
printf_filtered ("cmdline = '%s'\n", buffer);
|
|
}
|
|
else
|
|
warning (_("unable to open /proc file '%s'"), filename);
|
|
}
|
|
if (cwd_f)
|
|
{
|
|
xsnprintf (filename, sizeof filename, "/proc/%ld/cwd", pid);
|
|
gdb::optional<std::string> contents
|
|
= target_fileio_readlink (NULL, filename, &target_errno);
|
|
if (contents.has_value ())
|
|
printf_filtered ("cwd = '%s'\n", contents->c_str ());
|
|
else
|
|
warning (_("unable to read link '%s'"), filename);
|
|
}
|
|
if (exe_f)
|
|
{
|
|
xsnprintf (filename, sizeof filename, "/proc/%ld/exe", pid);
|
|
gdb::optional<std::string> contents
|
|
= target_fileio_readlink (NULL, filename, &target_errno);
|
|
if (contents.has_value ())
|
|
printf_filtered ("exe = '%s'\n", contents->c_str ());
|
|
else
|
|
warning (_("unable to read link '%s'"), filename);
|
|
}
|
|
if (mappings_f)
|
|
{
|
|
xsnprintf (filename, sizeof filename, "/proc/%ld/maps", pid);
|
|
gdb::unique_xmalloc_ptr<char> map
|
|
= target_fileio_read_stralloc (NULL, filename);
|
|
if (map != NULL)
|
|
{
|
|
char *line;
|
|
|
|
printf_filtered (_("Mapped address spaces:\n\n"));
|
|
if (gdbarch_addr_bit (gdbarch) == 32)
|
|
{
|
|
printf_filtered ("\t%10s %10s %10s %10s %s\n",
|
|
"Start Addr",
|
|
" End Addr",
|
|
" Size", " Offset", "objfile");
|
|
}
|
|
else
|
|
{
|
|
printf_filtered (" %18s %18s %10s %10s %s\n",
|
|
"Start Addr",
|
|
" End Addr",
|
|
" Size", " Offset", "objfile");
|
|
}
|
|
|
|
char *saveptr;
|
|
for (line = strtok_r (map.get (), "\n", &saveptr);
|
|
line;
|
|
line = strtok_r (NULL, "\n", &saveptr))
|
|
{
|
|
ULONGEST addr, endaddr, offset, inode;
|
|
const char *permissions, *device, *mapping_filename;
|
|
size_t permissions_len, device_len;
|
|
|
|
read_mapping (line, &addr, &endaddr,
|
|
&permissions, &permissions_len,
|
|
&offset, &device, &device_len,
|
|
&inode, &mapping_filename);
|
|
|
|
if (gdbarch_addr_bit (gdbarch) == 32)
|
|
{
|
|
printf_filtered ("\t%10s %10s %10s %10s %s\n",
|
|
paddress (gdbarch, addr),
|
|
paddress (gdbarch, endaddr),
|
|
hex_string (endaddr - addr),
|
|
hex_string (offset),
|
|
*mapping_filename ? mapping_filename : "");
|
|
}
|
|
else
|
|
{
|
|
printf_filtered (" %18s %18s %10s %10s %s\n",
|
|
paddress (gdbarch, addr),
|
|
paddress (gdbarch, endaddr),
|
|
hex_string (endaddr - addr),
|
|
hex_string (offset),
|
|
*mapping_filename ? mapping_filename : "");
|
|
}
|
|
}
|
|
}
|
|
else
|
|
warning (_("unable to open /proc file '%s'"), filename);
|
|
}
|
|
if (status_f)
|
|
{
|
|
xsnprintf (filename, sizeof filename, "/proc/%ld/status", pid);
|
|
gdb::unique_xmalloc_ptr<char> status
|
|
= target_fileio_read_stralloc (NULL, filename);
|
|
if (status)
|
|
puts_filtered (status.get ());
|
|
else
|
|
warning (_("unable to open /proc file '%s'"), filename);
|
|
}
|
|
if (stat_f)
|
|
{
|
|
xsnprintf (filename, sizeof filename, "/proc/%ld/stat", pid);
|
|
gdb::unique_xmalloc_ptr<char> statstr
|
|
= target_fileio_read_stralloc (NULL, filename);
|
|
if (statstr)
|
|
{
|
|
const char *p = statstr.get ();
|
|
|
|
printf_filtered (_("Process: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
|
|
p = skip_spaces (p);
|
|
if (*p == '(')
|
|
{
|
|
/* ps command also relies on no trailing fields
|
|
ever contain ')'. */
|
|
const char *ep = strrchr (p, ')');
|
|
if (ep != NULL)
|
|
{
|
|
printf_filtered ("Exec file: %.*s\n",
|
|
(int) (ep - p - 1), p + 1);
|
|
p = ep + 1;
|
|
}
|
|
}
|
|
|
|
p = skip_spaces (p);
|
|
if (*p)
|
|
printf_filtered (_("State: %c\n"), *p++);
|
|
|
|
if (*p)
|
|
printf_filtered (_("Parent process: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("Process group: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("Session id: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("TTY: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("TTY owner process group: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
|
|
if (*p)
|
|
printf_filtered (_("Flags: %s\n"),
|
|
hex_string (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("Minor faults (no memory page): %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("Minor faults, children: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("Major faults (memory page faults): %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("Major faults, children: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("utime: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("stime: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("utime, children: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("stime, children: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("jiffies remaining in current "
|
|
"time slice: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("'nice' value: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("jiffies until next timeout: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("jiffies until next SIGALRM: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("start time (jiffies since "
|
|
"system boot): %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("Virtual memory size: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("Resident set size: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("rlim: %s\n"),
|
|
pulongest (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("Start of text: %s\n"),
|
|
hex_string (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("End of text: %s\n"),
|
|
hex_string (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("Start of stack: %s\n"),
|
|
hex_string (strtoulst (p, &p, 10)));
|
|
#if 0 /* Don't know how architecture-dependent the rest is...
|
|
Anyway the signal bitmap info is available from "status". */
|
|
if (*p)
|
|
printf_filtered (_("Kernel stack pointer: %s\n"),
|
|
hex_string (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("Kernel instr pointer: %s\n"),
|
|
hex_string (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("Pending signals bitmap: %s\n"),
|
|
hex_string (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("Blocked signals bitmap: %s\n"),
|
|
hex_string (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("Ignored signals bitmap: %s\n"),
|
|
hex_string (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("Catched signals bitmap: %s\n"),
|
|
hex_string (strtoulst (p, &p, 10)));
|
|
if (*p)
|
|
printf_filtered (_("wchan (system call): %s\n"),
|
|
hex_string (strtoulst (p, &p, 10)));
|
|
#endif
|
|
}
|
|
else
|
|
warning (_("unable to open /proc file '%s'"), filename);
|
|
}
|
|
}
|
|
|
|
/* Implement "info proc mappings" for a corefile. */
|
|
|
|
static void
|
|
linux_core_info_proc_mappings (struct gdbarch *gdbarch, const char *args)
|
|
{
|
|
asection *section;
|
|
ULONGEST count, page_size;
|
|
unsigned char *descdata, *filenames, *descend;
|
|
size_t note_size;
|
|
unsigned int addr_size_bits, addr_size;
|
|
struct gdbarch *core_gdbarch = gdbarch_from_bfd (core_bfd);
|
|
/* We assume this for reading 64-bit core files. */
|
|
gdb_static_assert (sizeof (ULONGEST) >= 8);
|
|
|
|
section = bfd_get_section_by_name (core_bfd, ".note.linuxcore.file");
|
|
if (section == NULL)
|
|
{
|
|
warning (_("unable to find mappings in core file"));
|
|
return;
|
|
}
|
|
|
|
addr_size_bits = gdbarch_addr_bit (core_gdbarch);
|
|
addr_size = addr_size_bits / 8;
|
|
note_size = bfd_section_size (section);
|
|
|
|
if (note_size < 2 * addr_size)
|
|
error (_("malformed core note - too short for header"));
|
|
|
|
gdb::def_vector<unsigned char> contents (note_size);
|
|
if (!bfd_get_section_contents (core_bfd, section, contents.data (),
|
|
0, note_size))
|
|
error (_("could not get core note contents"));
|
|
|
|
descdata = contents.data ();
|
|
descend = descdata + note_size;
|
|
|
|
if (descdata[note_size - 1] != '\0')
|
|
error (_("malformed note - does not end with \\0"));
|
|
|
|
count = bfd_get (addr_size_bits, core_bfd, descdata);
|
|
descdata += addr_size;
|
|
|
|
page_size = bfd_get (addr_size_bits, core_bfd, descdata);
|
|
descdata += addr_size;
|
|
|
|
if (note_size < 2 * addr_size + count * 3 * addr_size)
|
|
error (_("malformed note - too short for supplied file count"));
|
|
|
|
printf_filtered (_("Mapped address spaces:\n\n"));
|
|
if (gdbarch_addr_bit (gdbarch) == 32)
|
|
{
|
|
printf_filtered ("\t%10s %10s %10s %10s %s\n",
|
|
"Start Addr",
|
|
" End Addr",
|
|
" Size", " Offset", "objfile");
|
|
}
|
|
else
|
|
{
|
|
printf_filtered (" %18s %18s %10s %10s %s\n",
|
|
"Start Addr",
|
|
" End Addr",
|
|
" Size", " Offset", "objfile");
|
|
}
|
|
|
|
filenames = descdata + count * 3 * addr_size;
|
|
while (--count > 0)
|
|
{
|
|
ULONGEST start, end, file_ofs;
|
|
|
|
if (filenames == descend)
|
|
error (_("malformed note - filenames end too early"));
|
|
|
|
start = bfd_get (addr_size_bits, core_bfd, descdata);
|
|
descdata += addr_size;
|
|
end = bfd_get (addr_size_bits, core_bfd, descdata);
|
|
descdata += addr_size;
|
|
file_ofs = bfd_get (addr_size_bits, core_bfd, descdata);
|
|
descdata += addr_size;
|
|
|
|
file_ofs *= page_size;
|
|
|
|
if (gdbarch_addr_bit (gdbarch) == 32)
|
|
printf_filtered ("\t%10s %10s %10s %10s %s\n",
|
|
paddress (gdbarch, start),
|
|
paddress (gdbarch, end),
|
|
hex_string (end - start),
|
|
hex_string (file_ofs),
|
|
filenames);
|
|
else
|
|
printf_filtered (" %18s %18s %10s %10s %s\n",
|
|
paddress (gdbarch, start),
|
|
paddress (gdbarch, end),
|
|
hex_string (end - start),
|
|
hex_string (file_ofs),
|
|
filenames);
|
|
|
|
filenames += 1 + strlen ((char *) filenames);
|
|
}
|
|
}
|
|
|
|
/* Implement "info proc" for a corefile. */
|
|
|
|
static void
|
|
linux_core_info_proc (struct gdbarch *gdbarch, const char *args,
|
|
enum info_proc_what what)
|
|
{
|
|
int exe_f = (what == IP_MINIMAL || what == IP_EXE || what == IP_ALL);
|
|
int mappings_f = (what == IP_MAPPINGS || what == IP_ALL);
|
|
|
|
if (exe_f)
|
|
{
|
|
const char *exe;
|
|
|
|
exe = bfd_core_file_failing_command (core_bfd);
|
|
if (exe != NULL)
|
|
printf_filtered ("exe = '%s'\n", exe);
|
|
else
|
|
warning (_("unable to find command name in core file"));
|
|
}
|
|
|
|
if (mappings_f)
|
|
linux_core_info_proc_mappings (gdbarch, args);
|
|
|
|
if (!exe_f && !mappings_f)
|
|
error (_("unable to handle request"));
|
|
}
|
|
|
|
/* Read siginfo data from the core, if possible. Returns -1 on
|
|
failure. Otherwise, returns the number of bytes read. READBUF,
|
|
OFFSET, and LEN are all as specified by the to_xfer_partial
|
|
interface. */
|
|
|
|
static LONGEST
|
|
linux_core_xfer_siginfo (struct gdbarch *gdbarch, gdb_byte *readbuf,
|
|
ULONGEST offset, ULONGEST len)
|
|
{
|
|
thread_section_name section_name (".note.linuxcore.siginfo", inferior_ptid);
|
|
asection *section = bfd_get_section_by_name (core_bfd, section_name.c_str ());
|
|
if (section == NULL)
|
|
return -1;
|
|
|
|
if (!bfd_get_section_contents (core_bfd, section, readbuf, offset, len))
|
|
return -1;
|
|
|
|
return len;
|
|
}
|
|
|
|
typedef int linux_find_memory_region_ftype (ULONGEST vaddr, ULONGEST size,
|
|
ULONGEST offset, ULONGEST inode,
|
|
int read, int write,
|
|
int exec, int modified,
|
|
const char *filename,
|
|
void *data);
|
|
|
|
/* List memory regions in the inferior for a corefile. */
|
|
|
|
static int
|
|
linux_find_memory_regions_full (struct gdbarch *gdbarch,
|
|
linux_find_memory_region_ftype *func,
|
|
void *obfd)
|
|
{
|
|
char mapsfilename[100];
|
|
char coredumpfilter_name[100];
|
|
pid_t pid;
|
|
/* Default dump behavior of coredump_filter (0x33), according to
|
|
Documentation/filesystems/proc.txt from the Linux kernel
|
|
tree. */
|
|
filter_flags filterflags = (COREFILTER_ANON_PRIVATE
|
|
| COREFILTER_ANON_SHARED
|
|
| COREFILTER_ELF_HEADERS
|
|
| COREFILTER_HUGETLB_PRIVATE);
|
|
|
|
/* We need to know the real target PID to access /proc. */
|
|
if (current_inferior ()->fake_pid_p)
|
|
return 1;
|
|
|
|
pid = current_inferior ()->pid;
|
|
|
|
if (use_coredump_filter)
|
|
{
|
|
xsnprintf (coredumpfilter_name, sizeof (coredumpfilter_name),
|
|
"/proc/%d/coredump_filter", pid);
|
|
gdb::unique_xmalloc_ptr<char> coredumpfilterdata
|
|
= target_fileio_read_stralloc (NULL, coredumpfilter_name);
|
|
if (coredumpfilterdata != NULL)
|
|
{
|
|
unsigned int flags;
|
|
|
|
sscanf (coredumpfilterdata.get (), "%x", &flags);
|
|
filterflags = (enum filter_flag) flags;
|
|
}
|
|
}
|
|
|
|
xsnprintf (mapsfilename, sizeof mapsfilename, "/proc/%d/smaps", pid);
|
|
gdb::unique_xmalloc_ptr<char> data
|
|
= target_fileio_read_stralloc (NULL, mapsfilename);
|
|
if (data == NULL)
|
|
{
|
|
/* Older Linux kernels did not support /proc/PID/smaps. */
|
|
xsnprintf (mapsfilename, sizeof mapsfilename, "/proc/%d/maps", pid);
|
|
data = target_fileio_read_stralloc (NULL, mapsfilename);
|
|
}
|
|
|
|
if (data != NULL)
|
|
{
|
|
char *line, *t;
|
|
|
|
line = strtok_r (data.get (), "\n", &t);
|
|
while (line != NULL)
|
|
{
|
|
ULONGEST addr, endaddr, offset, inode;
|
|
const char *permissions, *device, *filename;
|
|
struct smaps_vmflags v;
|
|
size_t permissions_len, device_len;
|
|
int read, write, exec, priv;
|
|
int has_anonymous = 0;
|
|
int should_dump_p = 0;
|
|
int mapping_anon_p;
|
|
int mapping_file_p;
|
|
|
|
memset (&v, 0, sizeof (v));
|
|
read_mapping (line, &addr, &endaddr, &permissions, &permissions_len,
|
|
&offset, &device, &device_len, &inode, &filename);
|
|
mapping_anon_p = mapping_is_anonymous_p (filename);
|
|
/* If the mapping is not anonymous, then we can consider it
|
|
to be file-backed. These two states (anonymous or
|
|
file-backed) seem to be exclusive, but they can actually
|
|
coexist. For example, if a file-backed mapping has
|
|
"Anonymous:" pages (see more below), then the Linux
|
|
kernel will dump this mapping when the user specified
|
|
that she only wants anonymous mappings in the corefile
|
|
(*even* when she explicitly disabled the dumping of
|
|
file-backed mappings). */
|
|
mapping_file_p = !mapping_anon_p;
|
|
|
|
/* Decode permissions. */
|
|
read = (memchr (permissions, 'r', permissions_len) != 0);
|
|
write = (memchr (permissions, 'w', permissions_len) != 0);
|
|
exec = (memchr (permissions, 'x', permissions_len) != 0);
|
|
/* 'private' here actually means VM_MAYSHARE, and not
|
|
VM_SHARED. In order to know if a mapping is really
|
|
private or not, we must check the flag "sh" in the
|
|
VmFlags field. This is done by decode_vmflags. However,
|
|
if we are using a Linux kernel released before the commit
|
|
834f82e2aa9a8ede94b17b656329f850c1471514 (3.10), we will
|
|
not have the VmFlags there. In this case, there is
|
|
really no way to know if we are dealing with VM_SHARED,
|
|
so we just assume that VM_MAYSHARE is enough. */
|
|
priv = memchr (permissions, 'p', permissions_len) != 0;
|
|
|
|
/* Try to detect if region should be dumped by parsing smaps
|
|
counters. */
|
|
for (line = strtok_r (NULL, "\n", &t);
|
|
line != NULL && line[0] >= 'A' && line[0] <= 'Z';
|
|
line = strtok_r (NULL, "\n", &t))
|
|
{
|
|
char keyword[64 + 1];
|
|
|
|
if (sscanf (line, "%64s", keyword) != 1)
|
|
{
|
|
warning (_("Error parsing {s,}maps file '%s'"), mapsfilename);
|
|
break;
|
|
}
|
|
|
|
if (strcmp (keyword, "Anonymous:") == 0)
|
|
{
|
|
/* Older Linux kernels did not support the
|
|
"Anonymous:" counter. Check it here. */
|
|
has_anonymous = 1;
|
|
}
|
|
else if (strcmp (keyword, "VmFlags:") == 0)
|
|
decode_vmflags (line, &v);
|
|
|
|
if (strcmp (keyword, "AnonHugePages:") == 0
|
|
|| strcmp (keyword, "Anonymous:") == 0)
|
|
{
|
|
unsigned long number;
|
|
|
|
if (sscanf (line, "%*s%lu", &number) != 1)
|
|
{
|
|
warning (_("Error parsing {s,}maps file '%s' number"),
|
|
mapsfilename);
|
|
break;
|
|
}
|
|
if (number > 0)
|
|
{
|
|
/* Even if we are dealing with a file-backed
|
|
mapping, if it contains anonymous pages we
|
|
consider it to be *also* an anonymous
|
|
mapping, because this is what the Linux
|
|
kernel does:
|
|
|
|
// Dump segments that have been written to.
|
|
if (vma->anon_vma && FILTER(ANON_PRIVATE))
|
|
goto whole;
|
|
|
|
Note that if the mapping is already marked as
|
|
file-backed (i.e., mapping_file_p is
|
|
non-zero), then this is a special case, and
|
|
this mapping will be dumped either when the
|
|
user wants to dump file-backed *or* anonymous
|
|
mappings. */
|
|
mapping_anon_p = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (has_anonymous)
|
|
should_dump_p = dump_mapping_p (filterflags, &v, priv,
|
|
mapping_anon_p, mapping_file_p,
|
|
filename, addr, offset);
|
|
else
|
|
{
|
|
/* Older Linux kernels did not support the "Anonymous:" counter.
|
|
If it is missing, we can't be sure - dump all the pages. */
|
|
should_dump_p = 1;
|
|
}
|
|
|
|
/* Invoke the callback function to create the corefile segment. */
|
|
if (should_dump_p)
|
|
func (addr, endaddr - addr, offset, inode,
|
|
read, write, exec, 1, /* MODIFIED is true because we
|
|
want to dump the mapping. */
|
|
filename, obfd);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* A structure for passing information through
|
|
linux_find_memory_regions_full. */
|
|
|
|
struct linux_find_memory_regions_data
|
|
{
|
|
/* The original callback. */
|
|
|
|
find_memory_region_ftype func;
|
|
|
|
/* The original datum. */
|
|
|
|
void *obfd;
|
|
};
|
|
|
|
/* A callback for linux_find_memory_regions that converts between the
|
|
"full"-style callback and find_memory_region_ftype. */
|
|
|
|
static int
|
|
linux_find_memory_regions_thunk (ULONGEST vaddr, ULONGEST size,
|
|
ULONGEST offset, ULONGEST inode,
|
|
int read, int write, int exec, int modified,
|
|
const char *filename, void *arg)
|
|
{
|
|
struct linux_find_memory_regions_data *data
|
|
= (struct linux_find_memory_regions_data *) arg;
|
|
|
|
return data->func (vaddr, size, read, write, exec, modified, data->obfd);
|
|
}
|
|
|
|
/* A variant of linux_find_memory_regions_full that is suitable as the
|
|
gdbarch find_memory_regions method. */
|
|
|
|
static int
|
|
linux_find_memory_regions (struct gdbarch *gdbarch,
|
|
find_memory_region_ftype func, void *obfd)
|
|
{
|
|
struct linux_find_memory_regions_data data;
|
|
|
|
data.func = func;
|
|
data.obfd = obfd;
|
|
|
|
return linux_find_memory_regions_full (gdbarch,
|
|
linux_find_memory_regions_thunk,
|
|
&data);
|
|
}
|
|
|
|
/* Determine which signal stopped execution. */
|
|
|
|
static int
|
|
find_signalled_thread (struct thread_info *info, void *data)
|
|
{
|
|
if (info->suspend.stop_signal != GDB_SIGNAL_0
|
|
&& info->ptid.pid () == inferior_ptid.pid ())
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* This is used to pass information from
|
|
linux_make_mappings_corefile_notes through
|
|
linux_find_memory_regions_full. */
|
|
|
|
struct linux_make_mappings_data
|
|
{
|
|
/* Number of files mapped. */
|
|
ULONGEST file_count;
|
|
|
|
/* The obstack for the main part of the data. */
|
|
struct obstack *data_obstack;
|
|
|
|
/* The filename obstack. */
|
|
struct obstack *filename_obstack;
|
|
|
|
/* The architecture's "long" type. */
|
|
struct type *long_type;
|
|
};
|
|
|
|
static linux_find_memory_region_ftype linux_make_mappings_callback;
|
|
|
|
/* A callback for linux_find_memory_regions_full that updates the
|
|
mappings data for linux_make_mappings_corefile_notes. */
|
|
|
|
static int
|
|
linux_make_mappings_callback (ULONGEST vaddr, ULONGEST size,
|
|
ULONGEST offset, ULONGEST inode,
|
|
int read, int write, int exec, int modified,
|
|
const char *filename, void *data)
|
|
{
|
|
struct linux_make_mappings_data *map_data
|
|
= (struct linux_make_mappings_data *) data;
|
|
gdb_byte buf[sizeof (ULONGEST)];
|
|
|
|
if (*filename == '\0' || inode == 0)
|
|
return 0;
|
|
|
|
++map_data->file_count;
|
|
|
|
pack_long (buf, map_data->long_type, vaddr);
|
|
obstack_grow (map_data->data_obstack, buf, TYPE_LENGTH (map_data->long_type));
|
|
pack_long (buf, map_data->long_type, vaddr + size);
|
|
obstack_grow (map_data->data_obstack, buf, TYPE_LENGTH (map_data->long_type));
|
|
pack_long (buf, map_data->long_type, offset);
|
|
obstack_grow (map_data->data_obstack, buf, TYPE_LENGTH (map_data->long_type));
|
|
|
|
obstack_grow_str0 (map_data->filename_obstack, filename);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Write the file mapping data to the core file, if possible. OBFD is
|
|
the output BFD. NOTE_DATA is the current note data, and NOTE_SIZE
|
|
is a pointer to the note size. Returns the new NOTE_DATA and
|
|
updates NOTE_SIZE. */
|
|
|
|
static char *
|
|
linux_make_mappings_corefile_notes (struct gdbarch *gdbarch, bfd *obfd,
|
|
char *note_data, int *note_size)
|
|
{
|
|
struct linux_make_mappings_data mapping_data;
|
|
struct type *long_type
|
|
= arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), 0, "long");
|
|
gdb_byte buf[sizeof (ULONGEST)];
|
|
|
|
auto_obstack data_obstack, filename_obstack;
|
|
|
|
mapping_data.file_count = 0;
|
|
mapping_data.data_obstack = &data_obstack;
|
|
mapping_data.filename_obstack = &filename_obstack;
|
|
mapping_data.long_type = long_type;
|
|
|
|
/* Reserve space for the count. */
|
|
obstack_blank (&data_obstack, TYPE_LENGTH (long_type));
|
|
/* We always write the page size as 1 since we have no good way to
|
|
determine the correct value. */
|
|
pack_long (buf, long_type, 1);
|
|
obstack_grow (&data_obstack, buf, TYPE_LENGTH (long_type));
|
|
|
|
linux_find_memory_regions_full (gdbarch, linux_make_mappings_callback,
|
|
&mapping_data);
|
|
|
|
if (mapping_data.file_count != 0)
|
|
{
|
|
/* Write the count to the obstack. */
|
|
pack_long ((gdb_byte *) obstack_base (&data_obstack),
|
|
long_type, mapping_data.file_count);
|
|
|
|
/* Copy the filenames to the data obstack. */
|
|
int size = obstack_object_size (&filename_obstack);
|
|
obstack_grow (&data_obstack, obstack_base (&filename_obstack),
|
|
size);
|
|
|
|
note_data = elfcore_write_note (obfd, note_data, note_size,
|
|
"CORE", NT_FILE,
|
|
obstack_base (&data_obstack),
|
|
obstack_object_size (&data_obstack));
|
|
}
|
|
|
|
return note_data;
|
|
}
|
|
|
|
/* Structure for passing information from
|
|
linux_collect_thread_registers via an iterator to
|
|
linux_collect_regset_section_cb. */
|
|
|
|
struct linux_collect_regset_section_cb_data
|
|
{
|
|
struct gdbarch *gdbarch;
|
|
const struct regcache *regcache;
|
|
bfd *obfd;
|
|
char *note_data;
|
|
int *note_size;
|
|
unsigned long lwp;
|
|
enum gdb_signal stop_signal;
|
|
int abort_iteration;
|
|
};
|
|
|
|
/* Callback for iterate_over_regset_sections that records a single
|
|
regset in the corefile note section. */
|
|
|
|
static void
|
|
linux_collect_regset_section_cb (const char *sect_name, int supply_size,
|
|
int collect_size, const struct regset *regset,
|
|
const char *human_name, void *cb_data)
|
|
{
|
|
struct linux_collect_regset_section_cb_data *data
|
|
= (struct linux_collect_regset_section_cb_data *) cb_data;
|
|
bool variable_size_section = (regset != NULL
|
|
&& regset->flags & REGSET_VARIABLE_SIZE);
|
|
|
|
if (!variable_size_section)
|
|
gdb_assert (supply_size == collect_size);
|
|
|
|
if (data->abort_iteration)
|
|
return;
|
|
|
|
gdb_assert (regset && regset->collect_regset);
|
|
|
|
/* This is intentionally zero-initialized by using std::vector, so
|
|
that any padding bytes in the core file will show as 0. */
|
|
std::vector<gdb_byte> buf (collect_size);
|
|
|
|
regset->collect_regset (regset, data->regcache, -1, buf.data (),
|
|
collect_size);
|
|
|
|
/* PRSTATUS still needs to be treated specially. */
|
|
if (strcmp (sect_name, ".reg") == 0)
|
|
data->note_data = (char *) elfcore_write_prstatus
|
|
(data->obfd, data->note_data, data->note_size, data->lwp,
|
|
gdb_signal_to_host (data->stop_signal), buf.data ());
|
|
else
|
|
data->note_data = (char *) elfcore_write_register_note
|
|
(data->obfd, data->note_data, data->note_size,
|
|
sect_name, buf.data (), collect_size);
|
|
|
|
if (data->note_data == NULL)
|
|
data->abort_iteration = 1;
|
|
}
|
|
|
|
/* Records the thread's register state for the corefile note
|
|
section. */
|
|
|
|
static char *
|
|
linux_collect_thread_registers (const struct regcache *regcache,
|
|
ptid_t ptid, bfd *obfd,
|
|
char *note_data, int *note_size,
|
|
enum gdb_signal stop_signal)
|
|
{
|
|
struct gdbarch *gdbarch = regcache->arch ();
|
|
struct linux_collect_regset_section_cb_data data;
|
|
|
|
data.gdbarch = gdbarch;
|
|
data.regcache = regcache;
|
|
data.obfd = obfd;
|
|
data.note_data = note_data;
|
|
data.note_size = note_size;
|
|
data.stop_signal = stop_signal;
|
|
data.abort_iteration = 0;
|
|
|
|
/* For remote targets the LWP may not be available, so use the TID. */
|
|
data.lwp = ptid.lwp ();
|
|
if (!data.lwp)
|
|
data.lwp = ptid.tid ();
|
|
|
|
gdbarch_iterate_over_regset_sections (gdbarch,
|
|
linux_collect_regset_section_cb,
|
|
&data, regcache);
|
|
return data.note_data;
|
|
}
|
|
|
|
/* Fetch the siginfo data for the specified thread, if it exists. If
|
|
there is no data, or we could not read it, return an empty
|
|
buffer. */
|
|
|
|
static gdb::byte_vector
|
|
linux_get_siginfo_data (thread_info *thread, struct gdbarch *gdbarch)
|
|
{
|
|
struct type *siginfo_type;
|
|
LONGEST bytes_read;
|
|
|
|
if (!gdbarch_get_siginfo_type_p (gdbarch))
|
|
return gdb::byte_vector ();
|
|
|
|
scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
|
|
inferior_ptid = thread->ptid;
|
|
|
|
siginfo_type = gdbarch_get_siginfo_type (gdbarch);
|
|
|
|
gdb::byte_vector buf (TYPE_LENGTH (siginfo_type));
|
|
|
|
bytes_read = target_read (current_top_target (), TARGET_OBJECT_SIGNAL_INFO, NULL,
|
|
buf.data (), 0, TYPE_LENGTH (siginfo_type));
|
|
if (bytes_read != TYPE_LENGTH (siginfo_type))
|
|
buf.clear ();
|
|
|
|
return buf;
|
|
}
|
|
|
|
struct linux_corefile_thread_data
|
|
{
|
|
struct gdbarch *gdbarch;
|
|
bfd *obfd;
|
|
char *note_data;
|
|
int *note_size;
|
|
enum gdb_signal stop_signal;
|
|
};
|
|
|
|
/* Records the thread's register state for the corefile note
|
|
section. */
|
|
|
|
static void
|
|
linux_corefile_thread (struct thread_info *info,
|
|
struct linux_corefile_thread_data *args)
|
|
{
|
|
struct regcache *regcache;
|
|
|
|
regcache = get_thread_arch_regcache (info->inf->process_target (),
|
|
info->ptid, args->gdbarch);
|
|
|
|
target_fetch_registers (regcache, -1);
|
|
gdb::byte_vector siginfo_data = linux_get_siginfo_data (info, args->gdbarch);
|
|
|
|
args->note_data = linux_collect_thread_registers
|
|
(regcache, info->ptid, args->obfd, args->note_data,
|
|
args->note_size, args->stop_signal);
|
|
|
|
/* Don't return anything if we got no register information above,
|
|
such a core file is useless. */
|
|
if (args->note_data != NULL)
|
|
if (!siginfo_data.empty ())
|
|
args->note_data = elfcore_write_note (args->obfd,
|
|
args->note_data,
|
|
args->note_size,
|
|
"CORE", NT_SIGINFO,
|
|
siginfo_data.data (),
|
|
siginfo_data.size ());
|
|
}
|
|
|
|
/* Fill the PRPSINFO structure with information about the process being
|
|
debugged. Returns 1 in case of success, 0 for failures. Please note that
|
|
even if the structure cannot be entirely filled (e.g., GDB was unable to
|
|
gather information about the process UID/GID), this function will still
|
|
return 1 since some information was already recorded. It will only return
|
|
0 iff nothing can be gathered. */
|
|
|
|
static int
|
|
linux_fill_prpsinfo (struct elf_internal_linux_prpsinfo *p)
|
|
{
|
|
/* The filename which we will use to obtain some info about the process.
|
|
We will basically use this to store the `/proc/PID/FILENAME' file. */
|
|
char filename[100];
|
|
/* The basename of the executable. */
|
|
const char *basename;
|
|
const char *infargs;
|
|
/* Temporary buffer. */
|
|
char *tmpstr;
|
|
/* The valid states of a process, according to the Linux kernel. */
|
|
const char valid_states[] = "RSDTZW";
|
|
/* The program state. */
|
|
const char *prog_state;
|
|
/* The state of the process. */
|
|
char pr_sname;
|
|
/* The PID of the program which generated the corefile. */
|
|
pid_t pid;
|
|
/* Process flags. */
|
|
unsigned int pr_flag;
|
|
/* Process nice value. */
|
|
long pr_nice;
|
|
/* The number of fields read by `sscanf'. */
|
|
int n_fields = 0;
|
|
|
|
gdb_assert (p != NULL);
|
|
|
|
/* Obtaining PID and filename. */
|
|
pid = inferior_ptid.pid ();
|
|
xsnprintf (filename, sizeof (filename), "/proc/%d/cmdline", (int) pid);
|
|
/* The full name of the program which generated the corefile. */
|
|
gdb::unique_xmalloc_ptr<char> fname
|
|
= target_fileio_read_stralloc (NULL, filename);
|
|
|
|
if (fname == NULL || fname.get ()[0] == '\0')
|
|
{
|
|
/* No program name was read, so we won't be able to retrieve more
|
|
information about the process. */
|
|
return 0;
|
|
}
|
|
|
|
memset (p, 0, sizeof (*p));
|
|
|
|
/* Defining the PID. */
|
|
p->pr_pid = pid;
|
|
|
|
/* Copying the program name. Only the basename matters. */
|
|
basename = lbasename (fname.get ());
|
|
strncpy (p->pr_fname, basename, sizeof (p->pr_fname));
|
|
p->pr_fname[sizeof (p->pr_fname) - 1] = '\0';
|
|
|
|
infargs = get_inferior_args ();
|
|
|
|
/* The arguments of the program. */
|
|
std::string psargs = fname.get ();
|
|
if (infargs != NULL)
|
|
psargs = psargs + " " + infargs;
|
|
|
|
strncpy (p->pr_psargs, psargs.c_str (), sizeof (p->pr_psargs));
|
|
p->pr_psargs[sizeof (p->pr_psargs) - 1] = '\0';
|
|
|
|
xsnprintf (filename, sizeof (filename), "/proc/%d/stat", (int) pid);
|
|
/* The contents of `/proc/PID/stat'. */
|
|
gdb::unique_xmalloc_ptr<char> proc_stat_contents
|
|
= target_fileio_read_stralloc (NULL, filename);
|
|
char *proc_stat = proc_stat_contents.get ();
|
|
|
|
if (proc_stat == NULL || *proc_stat == '\0')
|
|
{
|
|
/* Despite being unable to read more information about the
|
|
process, we return 1 here because at least we have its
|
|
command line, PID and arguments. */
|
|
return 1;
|
|
}
|
|
|
|
/* Ok, we have the stats. It's time to do a little parsing of the
|
|
contents of the buffer, so that we end up reading what we want.
|
|
|
|
The following parsing mechanism is strongly based on the
|
|
information generated by the `fs/proc/array.c' file, present in
|
|
the Linux kernel tree. More details about how the information is
|
|
displayed can be obtained by seeing the manpage of proc(5),
|
|
specifically under the entry of `/proc/[pid]/stat'. */
|
|
|
|
/* Getting rid of the PID, since we already have it. */
|
|
while (isdigit (*proc_stat))
|
|
++proc_stat;
|
|
|
|
proc_stat = skip_spaces (proc_stat);
|
|
|
|
/* ps command also relies on no trailing fields ever contain ')'. */
|
|
proc_stat = strrchr (proc_stat, ')');
|
|
if (proc_stat == NULL)
|
|
return 1;
|
|
proc_stat++;
|
|
|
|
proc_stat = skip_spaces (proc_stat);
|
|
|
|
n_fields = sscanf (proc_stat,
|
|
"%c" /* Process state. */
|
|
"%d%d%d" /* Parent PID, group ID, session ID. */
|
|
"%*d%*d" /* tty_nr, tpgid (not used). */
|
|
"%u" /* Flags. */
|
|
"%*s%*s%*s%*s" /* minflt, cminflt, majflt,
|
|
cmajflt (not used). */
|
|
"%*s%*s%*s%*s" /* utime, stime, cutime,
|
|
cstime (not used). */
|
|
"%*s" /* Priority (not used). */
|
|
"%ld", /* Nice. */
|
|
&pr_sname,
|
|
&p->pr_ppid, &p->pr_pgrp, &p->pr_sid,
|
|
&pr_flag,
|
|
&pr_nice);
|
|
|
|
if (n_fields != 6)
|
|
{
|
|
/* Again, we couldn't read the complementary information about
|
|
the process state. However, we already have minimal
|
|
information, so we just return 1 here. */
|
|
return 1;
|
|
}
|
|
|
|
/* Filling the structure fields. */
|
|
prog_state = strchr (valid_states, pr_sname);
|
|
if (prog_state != NULL)
|
|
p->pr_state = prog_state - valid_states;
|
|
else
|
|
{
|
|
/* Zero means "Running". */
|
|
p->pr_state = 0;
|
|
}
|
|
|
|
p->pr_sname = p->pr_state > 5 ? '.' : pr_sname;
|
|
p->pr_zomb = p->pr_sname == 'Z';
|
|
p->pr_nice = pr_nice;
|
|
p->pr_flag = pr_flag;
|
|
|
|
/* Finally, obtaining the UID and GID. For that, we read and parse the
|
|
contents of the `/proc/PID/status' file. */
|
|
xsnprintf (filename, sizeof (filename), "/proc/%d/status", (int) pid);
|
|
/* The contents of `/proc/PID/status'. */
|
|
gdb::unique_xmalloc_ptr<char> proc_status_contents
|
|
= target_fileio_read_stralloc (NULL, filename);
|
|
char *proc_status = proc_status_contents.get ();
|
|
|
|
if (proc_status == NULL || *proc_status == '\0')
|
|
{
|
|
/* Returning 1 since we already have a bunch of information. */
|
|
return 1;
|
|
}
|
|
|
|
/* Extracting the UID. */
|
|
tmpstr = strstr (proc_status, "Uid:");
|
|
if (tmpstr != NULL)
|
|
{
|
|
/* Advancing the pointer to the beginning of the UID. */
|
|
tmpstr += sizeof ("Uid:");
|
|
while (*tmpstr != '\0' && !isdigit (*tmpstr))
|
|
++tmpstr;
|
|
|
|
if (isdigit (*tmpstr))
|
|
p->pr_uid = strtol (tmpstr, &tmpstr, 10);
|
|
}
|
|
|
|
/* Extracting the GID. */
|
|
tmpstr = strstr (proc_status, "Gid:");
|
|
if (tmpstr != NULL)
|
|
{
|
|
/* Advancing the pointer to the beginning of the GID. */
|
|
tmpstr += sizeof ("Gid:");
|
|
while (*tmpstr != '\0' && !isdigit (*tmpstr))
|
|
++tmpstr;
|
|
|
|
if (isdigit (*tmpstr))
|
|
p->pr_gid = strtol (tmpstr, &tmpstr, 10);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Build the note section for a corefile, and return it in a malloc
|
|
buffer. */
|
|
|
|
static char *
|
|
linux_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size)
|
|
{
|
|
struct linux_corefile_thread_data thread_args;
|
|
struct elf_internal_linux_prpsinfo prpsinfo;
|
|
char *note_data = NULL;
|
|
struct thread_info *curr_thr, *signalled_thr;
|
|
|
|
if (! gdbarch_iterate_over_regset_sections_p (gdbarch))
|
|
return NULL;
|
|
|
|
if (linux_fill_prpsinfo (&prpsinfo))
|
|
{
|
|
if (gdbarch_ptr_bit (gdbarch) == 64)
|
|
note_data = elfcore_write_linux_prpsinfo64 (obfd,
|
|
note_data, note_size,
|
|
&prpsinfo);
|
|
else
|
|
note_data = elfcore_write_linux_prpsinfo32 (obfd,
|
|
note_data, note_size,
|
|
&prpsinfo);
|
|
}
|
|
|
|
/* Thread register information. */
|
|
try
|
|
{
|
|
update_thread_list ();
|
|
}
|
|
catch (const gdb_exception_error &e)
|
|
{
|
|
exception_print (gdb_stderr, e);
|
|
}
|
|
|
|
/* Like the kernel, prefer dumping the signalled thread first.
|
|
"First thread" is what tools use to infer the signalled thread.
|
|
In case there's more than one signalled thread, prefer the
|
|
current thread, if it is signalled. */
|
|
curr_thr = inferior_thread ();
|
|
if (curr_thr->suspend.stop_signal != GDB_SIGNAL_0)
|
|
signalled_thr = curr_thr;
|
|
else
|
|
{
|
|
signalled_thr = iterate_over_threads (find_signalled_thread, NULL);
|
|
if (signalled_thr == NULL)
|
|
signalled_thr = curr_thr;
|
|
}
|
|
|
|
thread_args.gdbarch = gdbarch;
|
|
thread_args.obfd = obfd;
|
|
thread_args.note_data = note_data;
|
|
thread_args.note_size = note_size;
|
|
thread_args.stop_signal = signalled_thr->suspend.stop_signal;
|
|
|
|
linux_corefile_thread (signalled_thr, &thread_args);
|
|
for (thread_info *thr : current_inferior ()->non_exited_threads ())
|
|
{
|
|
if (thr == signalled_thr)
|
|
continue;
|
|
|
|
linux_corefile_thread (thr, &thread_args);
|
|
}
|
|
|
|
note_data = thread_args.note_data;
|
|
if (!note_data)
|
|
return NULL;
|
|
|
|
/* Auxillary vector. */
|
|
gdb::optional<gdb::byte_vector> auxv =
|
|
target_read_alloc (current_top_target (), TARGET_OBJECT_AUXV, NULL);
|
|
if (auxv && !auxv->empty ())
|
|
{
|
|
note_data = elfcore_write_note (obfd, note_data, note_size,
|
|
"CORE", NT_AUXV, auxv->data (),
|
|
auxv->size ());
|
|
|
|
if (!note_data)
|
|
return NULL;
|
|
}
|
|
|
|
/* File mappings. */
|
|
note_data = linux_make_mappings_corefile_notes (gdbarch, obfd,
|
|
note_data, note_size);
|
|
|
|
return note_data;
|
|
}
|
|
|
|
/* Implementation of `gdbarch_gdb_signal_from_target', as defined in
|
|
gdbarch.h. This function is not static because it is exported to
|
|
other -tdep files. */
|
|
|
|
enum gdb_signal
|
|
linux_gdb_signal_from_target (struct gdbarch *gdbarch, int signal)
|
|
{
|
|
switch (signal)
|
|
{
|
|
case 0:
|
|
return GDB_SIGNAL_0;
|
|
|
|
case LINUX_SIGHUP:
|
|
return GDB_SIGNAL_HUP;
|
|
|
|
case LINUX_SIGINT:
|
|
return GDB_SIGNAL_INT;
|
|
|
|
case LINUX_SIGQUIT:
|
|
return GDB_SIGNAL_QUIT;
|
|
|
|
case LINUX_SIGILL:
|
|
return GDB_SIGNAL_ILL;
|
|
|
|
case LINUX_SIGTRAP:
|
|
return GDB_SIGNAL_TRAP;
|
|
|
|
case LINUX_SIGABRT:
|
|
return GDB_SIGNAL_ABRT;
|
|
|
|
case LINUX_SIGBUS:
|
|
return GDB_SIGNAL_BUS;
|
|
|
|
case LINUX_SIGFPE:
|
|
return GDB_SIGNAL_FPE;
|
|
|
|
case LINUX_SIGKILL:
|
|
return GDB_SIGNAL_KILL;
|
|
|
|
case LINUX_SIGUSR1:
|
|
return GDB_SIGNAL_USR1;
|
|
|
|
case LINUX_SIGSEGV:
|
|
return GDB_SIGNAL_SEGV;
|
|
|
|
case LINUX_SIGUSR2:
|
|
return GDB_SIGNAL_USR2;
|
|
|
|
case LINUX_SIGPIPE:
|
|
return GDB_SIGNAL_PIPE;
|
|
|
|
case LINUX_SIGALRM:
|
|
return GDB_SIGNAL_ALRM;
|
|
|
|
case LINUX_SIGTERM:
|
|
return GDB_SIGNAL_TERM;
|
|
|
|
case LINUX_SIGCHLD:
|
|
return GDB_SIGNAL_CHLD;
|
|
|
|
case LINUX_SIGCONT:
|
|
return GDB_SIGNAL_CONT;
|
|
|
|
case LINUX_SIGSTOP:
|
|
return GDB_SIGNAL_STOP;
|
|
|
|
case LINUX_SIGTSTP:
|
|
return GDB_SIGNAL_TSTP;
|
|
|
|
case LINUX_SIGTTIN:
|
|
return GDB_SIGNAL_TTIN;
|
|
|
|
case LINUX_SIGTTOU:
|
|
return GDB_SIGNAL_TTOU;
|
|
|
|
case LINUX_SIGURG:
|
|
return GDB_SIGNAL_URG;
|
|
|
|
case LINUX_SIGXCPU:
|
|
return GDB_SIGNAL_XCPU;
|
|
|
|
case LINUX_SIGXFSZ:
|
|
return GDB_SIGNAL_XFSZ;
|
|
|
|
case LINUX_SIGVTALRM:
|
|
return GDB_SIGNAL_VTALRM;
|
|
|
|
case LINUX_SIGPROF:
|
|
return GDB_SIGNAL_PROF;
|
|
|
|
case LINUX_SIGWINCH:
|
|
return GDB_SIGNAL_WINCH;
|
|
|
|
/* No way to differentiate between SIGIO and SIGPOLL.
|
|
Therefore, we just handle the first one. */
|
|
case LINUX_SIGIO:
|
|
return GDB_SIGNAL_IO;
|
|
|
|
case LINUX_SIGPWR:
|
|
return GDB_SIGNAL_PWR;
|
|
|
|
case LINUX_SIGSYS:
|
|
return GDB_SIGNAL_SYS;
|
|
|
|
/* SIGRTMIN and SIGRTMAX are not continuous in <gdb/signals.def>,
|
|
therefore we have to handle them here. */
|
|
case LINUX_SIGRTMIN:
|
|
return GDB_SIGNAL_REALTIME_32;
|
|
|
|
case LINUX_SIGRTMAX:
|
|
return GDB_SIGNAL_REALTIME_64;
|
|
}
|
|
|
|
if (signal >= LINUX_SIGRTMIN + 1 && signal <= LINUX_SIGRTMAX - 1)
|
|
{
|
|
int offset = signal - LINUX_SIGRTMIN + 1;
|
|
|
|
return (enum gdb_signal) ((int) GDB_SIGNAL_REALTIME_33 + offset);
|
|
}
|
|
|
|
return GDB_SIGNAL_UNKNOWN;
|
|
}
|
|
|
|
/* Implementation of `gdbarch_gdb_signal_to_target', as defined in
|
|
gdbarch.h. This function is not static because it is exported to
|
|
other -tdep files. */
|
|
|
|
int
|
|
linux_gdb_signal_to_target (struct gdbarch *gdbarch,
|
|
enum gdb_signal signal)
|
|
{
|
|
switch (signal)
|
|
{
|
|
case GDB_SIGNAL_0:
|
|
return 0;
|
|
|
|
case GDB_SIGNAL_HUP:
|
|
return LINUX_SIGHUP;
|
|
|
|
case GDB_SIGNAL_INT:
|
|
return LINUX_SIGINT;
|
|
|
|
case GDB_SIGNAL_QUIT:
|
|
return LINUX_SIGQUIT;
|
|
|
|
case GDB_SIGNAL_ILL:
|
|
return LINUX_SIGILL;
|
|
|
|
case GDB_SIGNAL_TRAP:
|
|
return LINUX_SIGTRAP;
|
|
|
|
case GDB_SIGNAL_ABRT:
|
|
return LINUX_SIGABRT;
|
|
|
|
case GDB_SIGNAL_FPE:
|
|
return LINUX_SIGFPE;
|
|
|
|
case GDB_SIGNAL_KILL:
|
|
return LINUX_SIGKILL;
|
|
|
|
case GDB_SIGNAL_BUS:
|
|
return LINUX_SIGBUS;
|
|
|
|
case GDB_SIGNAL_SEGV:
|
|
return LINUX_SIGSEGV;
|
|
|
|
case GDB_SIGNAL_SYS:
|
|
return LINUX_SIGSYS;
|
|
|
|
case GDB_SIGNAL_PIPE:
|
|
return LINUX_SIGPIPE;
|
|
|
|
case GDB_SIGNAL_ALRM:
|
|
return LINUX_SIGALRM;
|
|
|
|
case GDB_SIGNAL_TERM:
|
|
return LINUX_SIGTERM;
|
|
|
|
case GDB_SIGNAL_URG:
|
|
return LINUX_SIGURG;
|
|
|
|
case GDB_SIGNAL_STOP:
|
|
return LINUX_SIGSTOP;
|
|
|
|
case GDB_SIGNAL_TSTP:
|
|
return LINUX_SIGTSTP;
|
|
|
|
case GDB_SIGNAL_CONT:
|
|
return LINUX_SIGCONT;
|
|
|
|
case GDB_SIGNAL_CHLD:
|
|
return LINUX_SIGCHLD;
|
|
|
|
case GDB_SIGNAL_TTIN:
|
|
return LINUX_SIGTTIN;
|
|
|
|
case GDB_SIGNAL_TTOU:
|
|
return LINUX_SIGTTOU;
|
|
|
|
case GDB_SIGNAL_IO:
|
|
return LINUX_SIGIO;
|
|
|
|
case GDB_SIGNAL_XCPU:
|
|
return LINUX_SIGXCPU;
|
|
|
|
case GDB_SIGNAL_XFSZ:
|
|
return LINUX_SIGXFSZ;
|
|
|
|
case GDB_SIGNAL_VTALRM:
|
|
return LINUX_SIGVTALRM;
|
|
|
|
case GDB_SIGNAL_PROF:
|
|
return LINUX_SIGPROF;
|
|
|
|
case GDB_SIGNAL_WINCH:
|
|
return LINUX_SIGWINCH;
|
|
|
|
case GDB_SIGNAL_USR1:
|
|
return LINUX_SIGUSR1;
|
|
|
|
case GDB_SIGNAL_USR2:
|
|
return LINUX_SIGUSR2;
|
|
|
|
case GDB_SIGNAL_PWR:
|
|
return LINUX_SIGPWR;
|
|
|
|
case GDB_SIGNAL_POLL:
|
|
return LINUX_SIGPOLL;
|
|
|
|
/* GDB_SIGNAL_REALTIME_32 is not continuous in <gdb/signals.def>,
|
|
therefore we have to handle it here. */
|
|
case GDB_SIGNAL_REALTIME_32:
|
|
return LINUX_SIGRTMIN;
|
|
|
|
/* Same comment applies to _64. */
|
|
case GDB_SIGNAL_REALTIME_64:
|
|
return LINUX_SIGRTMAX;
|
|
}
|
|
|
|
/* GDB_SIGNAL_REALTIME_33 to _64 are continuous. */
|
|
if (signal >= GDB_SIGNAL_REALTIME_33
|
|
&& signal <= GDB_SIGNAL_REALTIME_63)
|
|
{
|
|
int offset = signal - GDB_SIGNAL_REALTIME_33;
|
|
|
|
return LINUX_SIGRTMIN + 1 + offset;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/* Helper for linux_vsyscall_range that does the real work of finding
|
|
the vsyscall's address range. */
|
|
|
|
static int
|
|
linux_vsyscall_range_raw (struct gdbarch *gdbarch, struct mem_range *range)
|
|
{
|
|
char filename[100];
|
|
long pid;
|
|
|
|
if (target_auxv_search (current_top_target (), AT_SYSINFO_EHDR, &range->start) <= 0)
|
|
return 0;
|
|
|
|
/* It doesn't make sense to access the host's /proc when debugging a
|
|
core file. Instead, look for the PT_LOAD segment that matches
|
|
the vDSO. */
|
|
if (!target_has_execution)
|
|
{
|
|
long phdrs_size;
|
|
int num_phdrs, i;
|
|
|
|
phdrs_size = bfd_get_elf_phdr_upper_bound (core_bfd);
|
|
if (phdrs_size == -1)
|
|
return 0;
|
|
|
|
gdb::unique_xmalloc_ptr<Elf_Internal_Phdr>
|
|
phdrs ((Elf_Internal_Phdr *) xmalloc (phdrs_size));
|
|
num_phdrs = bfd_get_elf_phdrs (core_bfd, phdrs.get ());
|
|
if (num_phdrs == -1)
|
|
return 0;
|
|
|
|
for (i = 0; i < num_phdrs; i++)
|
|
if (phdrs.get ()[i].p_type == PT_LOAD
|
|
&& phdrs.get ()[i].p_vaddr == range->start)
|
|
{
|
|
range->length = phdrs.get ()[i].p_memsz;
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* We need to know the real target PID to access /proc. */
|
|
if (current_inferior ()->fake_pid_p)
|
|
return 0;
|
|
|
|
pid = current_inferior ()->pid;
|
|
|
|
/* Note that reading /proc/PID/task/PID/maps (1) is much faster than
|
|
reading /proc/PID/maps (2). The later identifies thread stacks
|
|
in the output, which requires scanning every thread in the thread
|
|
group to check whether a VMA is actually a thread's stack. With
|
|
Linux 4.4 on an Intel i7-4810MQ @ 2.80GHz, with an inferior with
|
|
a few thousand threads, (1) takes a few miliseconds, while (2)
|
|
takes several seconds. Also note that "smaps", what we read for
|
|
determining core dump mappings, is even slower than "maps". */
|
|
xsnprintf (filename, sizeof filename, "/proc/%ld/task/%ld/maps", pid, pid);
|
|
gdb::unique_xmalloc_ptr<char> data
|
|
= target_fileio_read_stralloc (NULL, filename);
|
|
if (data != NULL)
|
|
{
|
|
char *line;
|
|
char *saveptr = NULL;
|
|
|
|
for (line = strtok_r (data.get (), "\n", &saveptr);
|
|
line != NULL;
|
|
line = strtok_r (NULL, "\n", &saveptr))
|
|
{
|
|
ULONGEST addr, endaddr;
|
|
const char *p = line;
|
|
|
|
addr = strtoulst (p, &p, 16);
|
|
if (addr == range->start)
|
|
{
|
|
if (*p == '-')
|
|
p++;
|
|
endaddr = strtoulst (p, &p, 16);
|
|
range->length = endaddr - addr;
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
warning (_("unable to open /proc file '%s'"), filename);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Implementation of the "vsyscall_range" gdbarch hook. Handles
|
|
caching, and defers the real work to linux_vsyscall_range_raw. */
|
|
|
|
static int
|
|
linux_vsyscall_range (struct gdbarch *gdbarch, struct mem_range *range)
|
|
{
|
|
struct linux_info *info = get_linux_inferior_data ();
|
|
|
|
if (info->vsyscall_range_p == 0)
|
|
{
|
|
if (linux_vsyscall_range_raw (gdbarch, &info->vsyscall_range))
|
|
info->vsyscall_range_p = 1;
|
|
else
|
|
info->vsyscall_range_p = -1;
|
|
}
|
|
|
|
if (info->vsyscall_range_p < 0)
|
|
return 0;
|
|
|
|
*range = info->vsyscall_range;
|
|
return 1;
|
|
}
|
|
|
|
/* Symbols for linux_infcall_mmap's ARG_FLAGS; their Linux MAP_* system
|
|
definitions would be dependent on compilation host. */
|
|
#define GDB_MMAP_MAP_PRIVATE 0x02 /* Changes are private. */
|
|
#define GDB_MMAP_MAP_ANONYMOUS 0x20 /* Don't use a file. */
|
|
|
|
/* See gdbarch.sh 'infcall_mmap'. */
|
|
|
|
static CORE_ADDR
|
|
linux_infcall_mmap (CORE_ADDR size, unsigned prot)
|
|
{
|
|
struct objfile *objf;
|
|
/* Do there still exist any Linux systems without "mmap64"?
|
|
"mmap" uses 64-bit off_t on x86_64 and 32-bit off_t on i386 and x32. */
|
|
struct value *mmap_val = find_function_in_inferior ("mmap64", &objf);
|
|
struct value *addr_val;
|
|
struct gdbarch *gdbarch = get_objfile_arch (objf);
|
|
CORE_ADDR retval;
|
|
enum
|
|
{
|
|
ARG_ADDR, ARG_LENGTH, ARG_PROT, ARG_FLAGS, ARG_FD, ARG_OFFSET, ARG_LAST
|
|
};
|
|
struct value *arg[ARG_LAST];
|
|
|
|
arg[ARG_ADDR] = value_from_pointer (builtin_type (gdbarch)->builtin_data_ptr,
|
|
0);
|
|
/* Assuming sizeof (unsigned long) == sizeof (size_t). */
|
|
arg[ARG_LENGTH] = value_from_ulongest
|
|
(builtin_type (gdbarch)->builtin_unsigned_long, size);
|
|
gdb_assert ((prot & ~(GDB_MMAP_PROT_READ | GDB_MMAP_PROT_WRITE
|
|
| GDB_MMAP_PROT_EXEC))
|
|
== 0);
|
|
arg[ARG_PROT] = value_from_longest (builtin_type (gdbarch)->builtin_int, prot);
|
|
arg[ARG_FLAGS] = value_from_longest (builtin_type (gdbarch)->builtin_int,
|
|
GDB_MMAP_MAP_PRIVATE
|
|
| GDB_MMAP_MAP_ANONYMOUS);
|
|
arg[ARG_FD] = value_from_longest (builtin_type (gdbarch)->builtin_int, -1);
|
|
arg[ARG_OFFSET] = value_from_longest (builtin_type (gdbarch)->builtin_int64,
|
|
0);
|
|
addr_val = call_function_by_hand (mmap_val, NULL, arg);
|
|
retval = value_as_address (addr_val);
|
|
if (retval == (CORE_ADDR) -1)
|
|
error (_("Failed inferior mmap call for %s bytes, errno is changed."),
|
|
pulongest (size));
|
|
return retval;
|
|
}
|
|
|
|
/* See gdbarch.sh 'infcall_munmap'. */
|
|
|
|
static void
|
|
linux_infcall_munmap (CORE_ADDR addr, CORE_ADDR size)
|
|
{
|
|
struct objfile *objf;
|
|
struct value *munmap_val = find_function_in_inferior ("munmap", &objf);
|
|
struct value *retval_val;
|
|
struct gdbarch *gdbarch = get_objfile_arch (objf);
|
|
LONGEST retval;
|
|
enum
|
|
{
|
|
ARG_ADDR, ARG_LENGTH, ARG_LAST
|
|
};
|
|
struct value *arg[ARG_LAST];
|
|
|
|
arg[ARG_ADDR] = value_from_pointer (builtin_type (gdbarch)->builtin_data_ptr,
|
|
addr);
|
|
/* Assuming sizeof (unsigned long) == sizeof (size_t). */
|
|
arg[ARG_LENGTH] = value_from_ulongest
|
|
(builtin_type (gdbarch)->builtin_unsigned_long, size);
|
|
retval_val = call_function_by_hand (munmap_val, NULL, arg);
|
|
retval = value_as_long (retval_val);
|
|
if (retval != 0)
|
|
warning (_("Failed inferior munmap call at %s for %s bytes, "
|
|
"errno is changed."),
|
|
hex_string (addr), pulongest (size));
|
|
}
|
|
|
|
/* See linux-tdep.h. */
|
|
|
|
CORE_ADDR
|
|
linux_displaced_step_location (struct gdbarch *gdbarch)
|
|
{
|
|
CORE_ADDR addr;
|
|
int bp_len;
|
|
|
|
/* Determine entry point from target auxiliary vector. This avoids
|
|
the need for symbols. Also, when debugging a stand-alone SPU
|
|
executable, entry_point_address () will point to an SPU
|
|
local-store address and is thus not usable as displaced stepping
|
|
location. The auxiliary vector gets us the PowerPC-side entry
|
|
point address instead. */
|
|
if (target_auxv_search (current_top_target (), AT_ENTRY, &addr) <= 0)
|
|
throw_error (NOT_SUPPORTED_ERROR,
|
|
_("Cannot find AT_ENTRY auxiliary vector entry."));
|
|
|
|
/* Make certain that the address points at real code, and not a
|
|
function descriptor. */
|
|
addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr,
|
|
current_top_target ());
|
|
|
|
/* Inferior calls also use the entry point as a breakpoint location.
|
|
We don't want displaced stepping to interfere with those
|
|
breakpoints, so leave space. */
|
|
gdbarch_breakpoint_from_pc (gdbarch, &addr, &bp_len);
|
|
addr += bp_len * 2;
|
|
|
|
return addr;
|
|
}
|
|
|
|
/* See linux-tdep.h. */
|
|
|
|
CORE_ADDR
|
|
linux_get_hwcap (struct target_ops *target)
|
|
{
|
|
CORE_ADDR field;
|
|
if (target_auxv_search (target, AT_HWCAP, &field) != 1)
|
|
return 0;
|
|
return field;
|
|
}
|
|
|
|
/* See linux-tdep.h. */
|
|
|
|
CORE_ADDR
|
|
linux_get_hwcap2 (struct target_ops *target)
|
|
{
|
|
CORE_ADDR field;
|
|
if (target_auxv_search (target, AT_HWCAP2, &field) != 1)
|
|
return 0;
|
|
return field;
|
|
}
|
|
|
|
/* Display whether the gcore command is using the
|
|
/proc/PID/coredump_filter file. */
|
|
|
|
static void
|
|
show_use_coredump_filter (struct ui_file *file, int from_tty,
|
|
struct cmd_list_element *c, const char *value)
|
|
{
|
|
fprintf_filtered (file, _("Use of /proc/PID/coredump_filter file to generate"
|
|
" corefiles is %s.\n"), value);
|
|
}
|
|
|
|
/* Display whether the gcore command is dumping mappings marked with
|
|
the VM_DONTDUMP flag. */
|
|
|
|
static void
|
|
show_dump_excluded_mappings (struct ui_file *file, int from_tty,
|
|
struct cmd_list_element *c, const char *value)
|
|
{
|
|
fprintf_filtered (file, _("Dumping of mappings marked with the VM_DONTDUMP"
|
|
" flag is %s.\n"), value);
|
|
}
|
|
|
|
/* To be called from the various GDB_OSABI_LINUX handlers for the
|
|
various GNU/Linux architectures and machine types. */
|
|
|
|
void
|
|
linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
|
{
|
|
set_gdbarch_core_pid_to_str (gdbarch, linux_core_pid_to_str);
|
|
set_gdbarch_info_proc (gdbarch, linux_info_proc);
|
|
set_gdbarch_core_info_proc (gdbarch, linux_core_info_proc);
|
|
set_gdbarch_core_xfer_siginfo (gdbarch, linux_core_xfer_siginfo);
|
|
set_gdbarch_find_memory_regions (gdbarch, linux_find_memory_regions);
|
|
set_gdbarch_make_corefile_notes (gdbarch, linux_make_corefile_notes);
|
|
set_gdbarch_has_shared_address_space (gdbarch,
|
|
linux_has_shared_address_space);
|
|
set_gdbarch_gdb_signal_from_target (gdbarch,
|
|
linux_gdb_signal_from_target);
|
|
set_gdbarch_gdb_signal_to_target (gdbarch,
|
|
linux_gdb_signal_to_target);
|
|
set_gdbarch_vsyscall_range (gdbarch, linux_vsyscall_range);
|
|
set_gdbarch_infcall_mmap (gdbarch, linux_infcall_mmap);
|
|
set_gdbarch_infcall_munmap (gdbarch, linux_infcall_munmap);
|
|
set_gdbarch_get_siginfo_type (gdbarch, linux_get_siginfo_type);
|
|
}
|
|
|
|
void _initialize_linux_tdep ();
|
|
void
|
|
_initialize_linux_tdep ()
|
|
{
|
|
linux_gdbarch_data_handle =
|
|
gdbarch_data_register_post_init (init_linux_gdbarch_data);
|
|
|
|
/* Observers used to invalidate the cache when needed. */
|
|
gdb::observers::inferior_exit.attach (invalidate_linux_cache_inf);
|
|
gdb::observers::inferior_appeared.attach (invalidate_linux_cache_inf);
|
|
|
|
add_setshow_boolean_cmd ("use-coredump-filter", class_files,
|
|
&use_coredump_filter, _("\
|
|
Set whether gcore should consider /proc/PID/coredump_filter."),
|
|
_("\
|
|
Show whether gcore should consider /proc/PID/coredump_filter."),
|
|
_("\
|
|
Use this command to set whether gcore should consider the contents\n\
|
|
of /proc/PID/coredump_filter when generating the corefile. For more information\n\
|
|
about this file, refer to the manpage of core(5)."),
|
|
NULL, show_use_coredump_filter,
|
|
&setlist, &showlist);
|
|
|
|
add_setshow_boolean_cmd ("dump-excluded-mappings", class_files,
|
|
&dump_excluded_mappings, _("\
|
|
Set whether gcore should dump mappings marked with the VM_DONTDUMP flag."),
|
|
_("\
|
|
Show whether gcore should dump mappings marked with the VM_DONTDUMP flag."),
|
|
_("\
|
|
Use this command to set whether gcore should dump mappings marked with the\n\
|
|
VM_DONTDUMP flag (\"dd\" in /proc/PID/smaps) when generating the corefile. For\n\
|
|
more information about this file, refer to the manpage of proc(5) and core(5)."),
|
|
NULL, show_dump_excluded_mappings,
|
|
&setlist, &showlist);
|
|
}
|