Commit Graph

1374 Commits

Author SHA1 Message Date
Ali Tamur 18a8505e38 Dwarf 5: Handle debug_str_offsets and indexed attributes that have base offsets.
* Process debug_str_offsets section. Handle DW_AT_str_offsets_base attribute and
keep the value in dwarf2_cu.

* Make addr_base field in dwarf2_cu optional to disambiguate 0 value
(absent or present and 0).

* During parsing, there is no guarantee that DW_AT_str_offsets_base and
DW_AT_rnglists_base fields will be processed before the attributes that need
those values for correct computation. So make two passes, on the first one mark
the attributes that depend on *_base attributes and process only the others.
On the second pass, only process the attributes that are marked on the first
pass.

* For string attributes, differentiate between addresses that directly point to
a string and those that point to an offset in debug_str_offsets section.

* There are now two attributes, DW_AT_addr_base and DW_AT_GNU_addr_base to read
address offset base. Likewise, there are two attributes, DW_AT_rnglists_base
and DW_AT_GNU_ranges_base to read ranges base. Since there is no guarantee which
ones the compiler will generate, create helper functions to handle all cases.

Tested with CC=/usr/bin/gcc (version 8.3.0) against master branch (also with
-gsplit-dwarf and -gdwarf-4 flags) and there was no increase in the set of
tests that fails. (gdb still cannot debug a 'hello world' program with DWARF 5,
so for the time being, this is all we care about).

This is part of an effort to support DWARF-5 in gdb.
2020-01-13 15:35:35 -08:00
Simon Marchi 6c2659886f gdb: add back declarations for _initialize functions
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
2020-01-13 14:01:38 -05:00
Tom Tromey 6a053cb1ff Change section_offsets to a std::vector
This changes section_offsets to be specialization of a std::vector and
updates all the users.  It also removes the ANOFFSET and
SIZEOF_N_SECTION_OFFSETS macros.

Most of this is just a generic sort of cleanup, that reduces the
number of lines of code.  However, a couple spots were doing weird
things.

objfile_relocate did:

-      std::vector<struct section_offsets>
-	new_debug_offsets (SIZEOF_N_SECTION_OFFSETS (debug_objfile->num_sections));

... which seems to greatly over-estimate the number of elements
needed.

This appeared in set_objfile_default_section_offset:

-  std::vector<struct section_offsets> offsets (objf->num_sections,
-					       { { offset } });

... which makes sense due to type safety, but is also actively
confusing given that section_offsets was previously also a kind of
vector type.

Tested on x86-64 Fedora 30.

gdb/ChangeLog
2020-01-08  Tom Tromey  <tromey@adacore.com>

	* xcoffread.c (enter_line_range, read_xcoff_symtab)
	(process_xcoff_symbol, xcoff_symfile_offsets): Update.
	* symtab.h (MSYMBOL_VALUE_ADDRESS): Update.
	(struct section_offsets, ANOFFSET, SIZEOF_N_SECTION_OFFSETS):
	Remove.
	(section_offsets): New typedef.
	* symtab.c (fixup_section, get_msymbol_address): Update.
	* symmisc.c (dump_msymbols): Update.
	* symfile.h (relative_addr_info_to_section_offsets)
	(symfile_map_offsets_to_segments): Update.
	* symfile.c (build_section_addr_info_from_objfile)
	(init_objfile_sect_indices): Update.
	(struct place_section_arg): Change type of "offsets".
	(place_section): Update.
	(relative_addr_info_to_section_offsets): Change type of
	"section_offsets".  Remove "num_sections" parameter.
	(default_symfile_offsets, syms_from_objfile_1)
	(set_objfile_default_section_offset): Update.
	(reread_symbols): No need to preserve section offsets by hand.
	(symfile_map_offsets_to_segments): Change type of "offsets".
	* stap-probe.c (relocate_address): Update.
	* stabsread.h (process_one_symbol): Update.
	* solib-target.c (struct lm_info_target) <offsets>: Change type.
	(solib_target_relocate_section_addresses): Update.
	* solib-svr4.c (enable_break, svr4_relocate_main_executable):
	Update.
	* solib-frv.c (frv_relocate_main_executable): Update.
	* solib-dsbt.c (dsbt_relocate_main_executable): Update.
	* solib-aix.c (solib_aix_get_section_offsets): Change return
	type.
	(solib_aix_solib_create_inferior_hook): Update.
	* remote.c (remote_target::get_offsets): Update.
	* psymtab.c (find_pc_sect_psymtab): Update.
	* psympriv.h (struct partial_symbol) <address, text_low,
	text_high>: Update.
	* objfiles.h (obj_section_offset): Update.
	(struct objfile) <section_offsets>: Change type.
	<num_sections>: Remove.
	(objfile_relocate): Update.
	* objfiles.c (entry_point_address_query): Update
	(relocate_one_symbol): Change type of "section_offsets".
	(objfile_relocate1, objfile_relocate1): Change type of
	"new_offsets".
	(objfile_rebase1): Update.
	* mipsread.c (mipscoff_symfile_read): Update.
	(read_alphacoff_dynamic_symtab): Remove "section_offsets"
	parameter.
	* mdebugread.c (parse_symbol): Change type of "section_offsets".
	(parse_external, psymtab_to_symtab_1): Update.
	* machoread.c (macho_symfile_offsets): Update.
	* ia64-tdep.c (ia64_find_unwind_table): Update.
	* hppa-tdep.c (read_unwind_info): Update.
	* hppa-bsd-tdep.c (hppabsd_find_global_pointer): Update.
	* dwarf2read.c (create_addrmap_from_index)
	(create_addrmap_from_aranges, dw2_find_pc_sect_compunit_symtab)
	(process_psymtab_comp_unit_reader, add_partial_symbol)
	(add_partial_subprogram, process_full_comp_unit)
	(read_file_scope, read_func_scope, read_lexical_block_scope)
	(read_call_site_scope, dwarf2_rnglists_process)
	(dwarf2_ranges_process, dwarf2_ranges_read)
	(dwarf_decode_lines_1, var_decode_location, new_symbol)
	(dwarf2_fetch_die_loc_sect_off, dwarf2_per_cu_text_offset):
	Update.
	* dwarf2-frame.c (execute_cfa_program, dwarf2_frame_find_fde):
	Update.
	* dtrace-probe.c (dtrace_probe::get_relocated_address): Update.
	* dbxread.c (read_dbx_symtab, read_ofile_symtab): Update.
	(process_one_symbol): Change type of "section_offsets".
	* ctfread.c (get_objfile_text_range): Update.
	* coffread.c (coff_symtab_read, enter_linenos)
	(process_coff_symbol): Update.
	* coff-pe-read.c (add_pe_forwarded_sym): Update.
	* amd64-windows-tdep.c (amd64_windows_find_unwind_info): Update.

Change-Id: I147eb967e9b44d82f4048039de7bb44b80cd72fb
2020-01-08 15:32:41 -07:00
Tom Tromey 456e800a63 Use std::string in dwarf2read.c
This replaces two instances of manual string management in
dwarf2read.c with std::string.

gdb/ChangeLog
2020-01-08  Tom Tromey  <tromey@adacore.com>

	* dwarf2read.c (parse_macro_definition): Use std::string.
	(parse_macro_definition): Likewise.

Change-Id: Iec437100105484aa4a116fb5d651d7ed52ee9d81
2020-01-08 11:17:18 -07:00
Tom Tromey 6dfa2fc207 Use std::vector in abbrev_table_read_table
This removes some manual memory management from
abbrev_table_read_table, replacing it with a std::vector.

gdb/ChangeLog
2020-01-08  Tom Tromey  <tromey@adacore.com>

	* dwarf2read.c (abbrev_table_read_table): Use std::vector.
	(ATTR_ALLOC_CHUNK): Remove.

Change-Id: I0b0e70ac2281d89a78f4d6a642700c9f0506871d
2020-01-08 11:17:18 -07:00
Tom Tromey 421d161623 Use unique_xmalloc_ptr in fixup_go_packaging
This changes fixup_go_packaging to use unique_xmalloc_ptr.  I kept
this patch separate as it is slightly more complicated than the
previous changes.

gdb/ChangeLog
2020-01-08  Tom Tromey  <tromey@adacore.com>

	* dwarf2read.c (fixup_go_packaging): Use unique_xmalloc_ptr.

Change-Id: I0c553d0c6579db478c27bc40fc21133a61e1a4d9
2020-01-08 11:17:18 -07:00
Tom Tromey 43816ebc33 Remove some explicit memory management from dwarf2read.c
I noticed a few spots in dwarf2read.c that could be improved by moving
to unique_xmalloc_ptr or, in one case, std::vector.

gdb/ChangeLog
2020-01-08  Tom Tromey  <tromey@adacore.com>

	* dwarf2read.c (add_partial_symbol): Use unique_xmalloc_ptr.
	(dwarf2_compute_name, open_dwo_file): Likewise.
	(process_enumeration_scope): Use std::vector.
	(guess_partial_die_structure_name): Use unique_xmalloc_ptr.
	(partial_die_info::fixup, dwarf2_start_subfile)
	(guess_full_die_structure_name, dwarf2_name): Likewise.
	(determine_prefix): Update.
	(guess_full_die_structure_name): Make return type const.
	(partial_die_full_name): Return unique_xmalloc_ptr.
	(DW_FIELD_ALLOC_CHUNK): Remove.

Change-Id: I1cb278c608041ef36ef1f77c7e7565c921038d08
2020-01-08 11:17:18 -07:00
Joel Brobecker b811d2c292 Update copyright year range in all GDB files.
gdb/ChangeLog:

        Update copyright year range in all GDB files.
2020-01-01 10:20:53 +04:00
Christian Biesinger 4d4eaa3005 Make symbol_set_names a member function
This also renames it to make it clearer that this is not a cheap
function (to compute_and_set_names).  Also renames name to m_name
to make the implementation of the renamed function more readable.

Most of the places that access sym->m_name directly were also changed
to call linkage_name () instead, to make it clearer which name they
are accessing.

gdb/ChangeLog:

2019-12-26  Christian Biesinger  <cbiesinger@google.com>

	* ada-lang.c (ada_decode_symbol): Update.
	* buildsym.c (add_symbol_to_list): Update.
	* coffread.c (process_coff_symbol): Update.
	* ctfread.c (ctf_add_enum_member_cb): Update.
	(new_symbol): Update.
	(ctf_add_var_cb): Update.
	* dwarf2read.c (fixup_go_packaging): Update.
	(dwarf2_compute_name): Update.
	(new_symbol): Update.
	* jit.c (finalize_symtab): Update.
	* language.c (language_alloc_type_symbol): Update.
	* mdebugread.c (new_symbol): Update.
	* minsyms.c (minimal_symbol_reader::record_full): Update.
	(minimal_symbol_reader::install): Update.
	* psymtab.c (print_partial_symbols): Update.
	(psymbol_hash): Update.
	(psymbol_compare): Update.
	(add_psymbol_to_bcache): Update.
	(maintenance_check_psymtabs): Update.
	* stabsread.c (define_symbol): Update.
	* symtab.c (symbol_set_names): Rename to...
	(general_symbol_info::compute_and_set_names): ...this.
	(general_symbol_info::natural_name): Update.
	(general_symbol_info::search_name): Update.
	(fixup_section): Update.
	* symtab.h (struct general_symbol_info) <name>: Rename to...
	<m_name>: ...this.
	<compute_and_set_names>: Rename from...
	(symbol_set_names): ...this.
	(SYMBOL_SET_NAMES): Remove.
	(struct symbol) <ctor>: Update.

Change-Id: I8da1f10cab4e0b89f19d5750fa4e6e2ac8d2b24f
2019-12-27 01:41:35 -03:00
Ruslan Kabatsayev 3142e908d0 Fix printing ULONGEST variables on x86-32
gdb/ChangeLog
2019-12-26  Ruslan Kabatsayev  <b7.10110111@gmail.com>

        * dwarf2read.c (is_valid_DW_AT_defaulted)
        (is_valid_DW_AT_calling_convention_for_type)
        (is_valid_DW_AT_calling_convention_for_subroutine): Fix printing
        ULONGEST variables on x86-32.
2019-12-26 00:12:43 +03:00
Tankut Baris Aktemur d0922fcf02 Use enum bitfield for the calling_convention attribute of a subroutine
This is a refactoring.  Instead of a plain unsigned value, use an enum
bitfield.

gdb/ChangeLog:
2019-12-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* dwarf2read.c (is_valid_DW_AT_calling_convention_for_subroutine):
	New function.
	(read_subroutine_type): Validate the parsed
	DW_AT_calling_convention value before assigning it to a
	subroutine's calling_convention attribute.
	* gdbtypes.h (struct func_type) <calling_convention>: Use
	an enum bitfield as its type, instead of plain unsigned.

Change-Id: Ibc6b2f71e885cbc5c3c9d49734f7125acbfd1bcd
2019-12-20 19:27:29 +01:00
Tankut Baris Aktemur e35000a7f8 gdb: recognize new DWARF attributes: defaulted, deleted, calling conv.
Extend GDB's internal representation of types to include the
DW_AT_calling_convention, DW_AT_defaulted, and DW_AT_deleted attributes
that were introduced in DWARF5.

These attributes will be helpful in a future patch about infcall'ing
functions with call-by-value parameters.  GDB will use the attributes
to decide whether the type of a call-by-value parameter is implicitly
pass-by-reference.

gdb/ChangeLog:
2019-12-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* dwarf2read.c (dwarf2_add_member_fn): Read the DW_AT_defaulted
	and DW_AT_deleted attributes of a function.
	(read_structure_type): Read the DW_AT_calling_convention attribute
	of a type.
	(is_valid_DW_AT_defaulted): New function.
	(is_valid_DW_AT_calling_convention_for_type): New function.
	* gdbtypes.h: Include dwarf2.h.
	(struct fn_field)<defaulted>: New field to store the
	DW_AT_defaulted attribute.
	(struct fn_field)<is_deleted>: New field to store the
	DW_AT_deleted attribute.
	(struct cplus_struct_type)<calling_convention>: New field to store
	the DW_AT_calling_convention attribute.
	(TYPE_FN_FIELD_DEFAULTED): New macro.
	(TYPE_FN_FIELD_DELETED): New macro.
	(TYPE_CPLUS_CALLING_CONVENTION): New macro.
	* gdbtypes.c (dump_fn_fieldlists): Update for the changes made
	to the .h file.
	(print_cplus_stuff): Likewise.

Change-Id: I54192f363115b78ec7435a8563b73fcace420765
2019-12-20 17:43:06 +01:00
Christian Biesinger d3ecddab5f Use a member function to set a symbol's language
This removes symbol_set_language and SYMBOL_SET_LANGUAGE in favor of
a new function general_symbol_info::set_language. symbol and minimal_symbol
already inherit from that struct so this works naturally.

gdb/ChangeLog:

2019-12-15  Christian Biesinger  <cbiesinger@google.com>

	* ada-exp.y (write_ambiguous_var): Update.
	* coffread.c (process_coff_symbol): Update.
	* ctfread.c (ctf_add_enum_member_cb): Update.
	(new_symbol): Update.
	* dwarf2read.c (fixup_go_packaging): Update.
	(new_symbol): Update.
	* language.c (language_alloc_type_symbol): Update.
	* mdebugread.c (new_symbol): Update.
	* minsyms.c (minimal_symbol_reader::record_full): Update.
	* psymtab.c (add_psymbol_to_bcache): Update.
	* stabsread.c (define_symbol): Update.
	(read_enum_type): Update.
	* symtab.c (symbol_set_language): Make this a member function...
	(general_symbol_info::set_language): ... here.
	* symtab.h (struct general_symbol_info) <set_language>: New function.
	(SYMBOL_SET_LANGUAGE): Remove.
	(symbol_set_language): Remove.

Change-Id: Ideafb6c384004b9adef793a1192735c501da41d5
2019-12-16 00:44:58 -06:00
Christian Biesinger c1b5c1ebc9 Use an accessor function for general_symbol_info::language
Also renames the member variable to m_language to make code easier to read
when more functions become member functions.

I was originally hoping to eventually make m_language private (after a few
more patches), but unfortunately then it no longer counts as a POD type,
which means gdbsupport/poison.h won't let us use memset to initialize
this type, which psymtabs rely on to clear padding bytes so that bcache
can work properly.

gdb/ChangeLog:

2019-12-15  Christian Biesinger  <cbiesinger@google.com>

	* ada-lang.c (ada_add_block_symbols): Update.
	(ada_collect_symbol_completion_matches): Update.
	* ax-gdb.c (gen_expr): Update.
	* block.c (block_lookup_symbol): Update.
	(block_lookup_symbol_primary): Update.
	(block_find_symbol): Update.
	* cp-namespace.c (cp_lookup_symbol_imports_or_template): Update.
	* dbxread.c (process_one_symbol): Update.
	* dictionary.c (insert_symbol_hashed): Update.
	(collate_pending_symbols_by_language): Update.
	(mdict_add_symbol): Update.
	* dwarf-index-write.c (write_psymbols): Update.
	* dwarf2read.c (fixup_go_packaging): Update.
	* findvar.c (read_var_value): Update.
	* ft32-tdep.c (ft32_skip_prologue): Update.
	* go-lang.c (go_symbol_package_name): Update.
	* language.h (scoped_switch_to_sym_language_if_auto::
	scoped_switch_to_sym_language_if_auto): Update.
	* linespec.c (find_method): Update.
	(find_label_symbols_in_block): Update.
	* mdebugread.c (parse_symbol): Update.
	* mi/mi-cmd-stack.c (list_arg_or_local): Update.
	* minsyms.c (add_minsym_to_demangled_hash_table): Update.
	(minimal_symbol_reader::install): Update.
	* moxie-tdep.c (moxie_skip_prologue): Update.
	* parse.c (parse_exp_in_context): Update.
	* psymtab.c (psymbol_name_matches): Update.
	(match_partial_symbol): Update.
	(lookup_partial_symbol): Update.
	(psymbol_hash): Update.
	(psymbol_compare): Update.
	* python/py-framefilter.c (extract_sym): Update.
	(py_print_single_arg): Update.
	* stabsread.c (define_symbol): Update.
	* stack.c (print_frame_arg): Update.
	(find_frame_funname): Update.
	(info_frame_command_core): Update.
	* symfile.c (set_initial_language): Update.
	* symtab.c (symbol_set_demangled_name): Update.
	(symbol_get_demangled_name): Update.
	(symbol_set_language): Update.
	(symbol_find_demangled_name): Update.
	(symbol_set_names): Update.
	(general_symbol_info::natural_name): Update.
	(general_symbol_info::demangled_name): Update.
	(general_symbol_info::search_name): Update.
	(symbol_matches_search_name): Update.
	(eq_symbol_entry): Update.
	(iterate_over_symbols): Update.
	(completion_list_add_symbol): Update.
	(completion_list_add_msymbol): Update.
	(completion_list_add_fields): Update.
	* symtab.h (struct general_symbol_info) <language>: New function.
	<language>: Rename to...
	<m_language>: ...this.
	(SYMBOL_LANGUAGE): Remove.
	(MSYMBOL_LANGUAGE): Remove.
	(struct symbol) <ctor>: Update.
	* xstormy16-tdep.c (xstormy16_skip_prologue): Update.

Change-Id: I6464d477457e61639c63ddf8b145e407a35c235a
2019-12-16 00:44:36 -06:00
Tom Tromey d5a22e77b5 Remove gdbarch_bits_big_endian
From what I can tell, set_gdbarch_bits_big_endian has never been used.
That is, all architectures since its introduction have simply used the
default, which is simply check the architecture's byte-endianness.

Because this interferes with the scalar_storage_order code, this patch
removes this gdbarch setting entirely.  In some places,
type_byte_order is used rather than the plain gdbarch.

gdb/ChangeLog
2019-12-04  Tom Tromey  <tromey@adacore.com>

	* ada-lang.c (decode_constrained_packed_array)
	(ada_value_assign, value_assign_to_component): Update.
	* dwarf2loc.c (rw_pieced_value, access_memory)
	(dwarf2_compile_expr_to_ax): Update.
	* dwarf2read.c (dwarf2_add_field): Update.
	* eval.c (evaluate_subexp_standard): Update.
	* gdbarch.c, gdbarch.h: Rebuild.
	* gdbarch.sh (bits_big_endian): Remove.
	* gdbtypes.h (union field_location): Update comment.
	* target-descriptions.c (make_gdb_type): Update.
	* valarith.c (value_bit_index): Update.
	* value.c (struct value) <bitpos>: Update comment.
	(unpack_bits_as_long, modify_field): Update.
	* value.h (value_bitpos): Update comment.

Change-Id: I379b5e0c408ec8742f7a6c6b721108e73ed1b018
2019-12-04 09:31:18 -07:00
Tom Tromey 103a685e7f Add scalar_storage_order support for floating point
Testing the scalar_storage_order patch pointed out that it does not
handle floating point properly.  This patch fixes this problem.

gdb/ChangeLog
2019-12-04  Tom Tromey  <tromey@adacore.com>

	* dwarf2read.c (dwarf2_init_float_type)
	(dwarf2_init_complex_target_type): Add byte_order parameter.
	(read_base_type): Compute byte order earlier.
	* gdbtypes.c (init_float_type): Add byte_order parameter.
	* gdbtypes.h (init_float_type): Add byte_order parameter.

gdb/testsuite/ChangeLog
2019-12-04  Tom Tromey  <tromey@adacore.com>

	* gdb.base/endianity.c (struct otherendian) <f>: New field.
	(main): Initialize it.
	* gdb.base/endianity.exp: Update.

Change-Id: Ic02eb711d80ce678ef0ecf8c506a626e441b8440
2019-12-04 09:31:18 -07:00
Tom Tromey feee869bd8 Silence maybe-uninitialized warning in dwarf2read.c
I upgraded to Fedora 30 recently.  It includes GCC 9, which gives a
warning for dwarf2read.c:

../../binutils-gdb/gdb/dwarf2read.c:16103:24: warning: ‘discr_offset’ may be used uninitialized in this function [-Wmaybe-uninitialized]

This patch fixes the problem by initializing discr_offset.
Tested by rebuilding.

gdb/ChangeLog
2019-12-04  Tom Tromey  <tromey@adacore.com>

	* dwarf2read.c (process_structure_scope): Initialize
	"discr_offset".

Change-Id: I76a6157921c9beacb641b8a41e10026006621b95
2019-12-04 07:48:44 -07:00
Andrew Burgess 216a7e6b9e gdb: Dynamic string length support
Add support for strings with dynamic length using the DWARF attribute
DW_AT_string_length.

Currently gFortran generates DWARF for some strings that make use of
DW_AT_string_length like this:

 <1><2cc>: Abbrev Number: 20 (DW_TAG_string_type)
    <2cd>   DW_AT_string_length: 5 byte block: 99 bd 1 0 0      (DW_OP_call4: <0x1bd>)
    <2d3>   DW_AT_byte_size   : 4
    <2d4>   DW_AT_sibling     : <0x2e2>

In this type entry the DW_AT_string_length attribute references a
second DW_TAG_formal_parameter that contains the string length.  The
DW_AT_byte_size indicates that the length is a 4-byte value.

This commit extends GDB's DWARF parsing for strings so that we can
create dynamic types as well as static types, based on the attribute
the DWARF contains.

I then extend the dynamic type resolution code in gdbtypes.c to add
support for resolving dynamic strings.

gdb/ChangeLog:

	* dwarf2read.c (read_tag_string_type): Read the fields required to
	make a dynamic string, and possibly create a dynamic range for the
	string.
	(attr_to_dynamic_prop): Setup is_reference based on the type of
	attribute being processed.
	* gdbtypes.c (is_dynamic_type_internal): Handle TYPE_CODE_STRING.
	(resolve_dynamic_array): Rename to...
	(resolve_dynamic_array_or_string): ...this, update header comment,
	and accept TYPE_CODE_STRING.
	(resolve_dynamic_type_internal): Handle TYPE_CODE_STRING.

gdb/testsuite/ChangeLog:

	* gdb.fortran/array-slices.exp: Add test for dynamic strings.

Change-Id: I03f2d181b26156f48f27a03c8a59f9bd4d71ac17
2019-12-01 22:31:32 +00:00
Andrew Burgess 11a8b1641e gdb/dwarf: Introduce dwarf2_per_cu_int_type function
This is a minor refactor in preparation for the next commit.  Splits
the core of dwarf2_per_cu_addr_sized_int_type out into a separate
function.  There should be no user visible changes after this commit.

gdb/ChangeLog:

	* dwarf2read.c (dwarf2_per_cu_int_type): New function, takes most
	of its implementation from...
	(dwarf2_per_cu_addr_sized_int_type): ...here, which now just calls
	the new function.

Change-Id: I8b849dd338012ec033b3f0a57d65cec0d7a3bd97
2019-12-01 22:31:31 +00:00
Andrew Burgess 5bbd8269fa gdb/fortran: array stride support
Currently GDB supports a byte or bit stride on arrays, in DWARF this
would be DW_AT_bit_stride or DW_AT_byte_stride on DW_TAG_array_type.
However, DWARF can also support DW_AT_byte_stride or DW_AT_bit_stride
on DW_TAG_subrange_type, the tag used to describe each dimension of an
array.

Strides on subranges are used by gFortran to represent Fortran arrays,
and this commit adds support for this to GDB.

I've extended the range_bounds struct to include the stride
information.  The name is possibly a little inaccurate now, but this
still sort of makes sense, the structure represents information about
the bounds of the range, and also how to move from the lower to the
upper bound (the stride).

I've added initial support for bit strides, but I've never actually
seen an example of this being generated.  Further, I don't really see
right now how GDB would currently handle a bit stride that was not a
multiple of the byte size as the code in, for example,
valarith.c:value_subscripted_rvalue seems geared around byte
addressing.  As a consequence if we see a bit stride that is not a
multiple of 8 then GDB will give an error.

gdb/ChangeLog:

	* dwarf2read.c (read_subrange_type): Read bit and byte stride and
	create a range with stride where appropriate.
	* f-valprint.c: Include 'gdbarch.h'.
	(f77_print_array_1): Take the stride into account when walking the
	array.  Also convert the stride into addressable units.
	* gdbtypes.c (create_range_type): Initialise the stride to
	constant zero.
	(create_range_type_with_stride): New function, initialise the
	range as normal, and then setup the stride.
	(has_static_range): Include the stride here.  Also change the
	return type to bool.
	(create_array_type_with_stride): Consider the range stride if the
	array isn't given its own stride.
	(resolve_dynamic_range): Resolve the stride if needed.
	* gdbtypes.h (struct range_bounds) <stride>: New member variable.
	(struct range_bounds) <flag_is_byte_stride>: New member variable.
	(TYPE_BIT_STRIDE): Define.
	(TYPE_ARRAY_BIT_STRIDE): Define.
	(create_range_type_with_stride): Declare.
	* valarith.c (value_subscripted_rvalue): Take range stride into
	account when walking the array.

gdb/testsuite/ChangeLog:

	* gdb.fortran/derived-type-striding.exp: New file.
	* gdb.fortran/derived-type-striding.f90: New file.
	* gdb.fortran/array-slices.exp: New file.
	* gdb.fortran/array-slices.f90: New file.

Change-Id: I9af2bcd1f2d4c56f76f5f3f9f89d8f06bef10d9a
2019-12-01 22:31:30 +00:00
Tom Tromey 489dbda6a8 Correctly compute length of DW_TAG_variant_part union
Currently, gdb internally transforms DW_TAG_variant_part into a union
(with some special attbributes).  When doing so, it computes the
length of this union from the length of the fields.  However, this
computation didn't include the offset of these fields, resulting in
the length being too short.

This is not a problem given the way the code currently works.
However, I have a patch series to switch gdb to value-based printing,
where this does have an impact.

Tested on x86-64 Fedora 28; and, considering that this only affects
Rust, I am checking it in.

gdb/ChangeLog
2019-11-30  Tom Tromey  <tom@tromey.com>

	* dwarf2read.c (dwarf2_add_field): Include field offset when
	computing variant part length.

Change-Id: I25d84fc237eb3c1e7f11f6eaf35ffe198efde6cc
2019-11-30 20:47:44 -07:00
Kevin Buettner 8d9a256865 Fix BZ 25065 - Ensure that physnames are computed for inherited DIEs
This is a fix for BZ 25065.

GDB segfaults when running either gdb.cp/subtypes.exp or
gdb.cp/local.exp in conjunction with using the -flto compiler/linker
flag.

A much simpler program, which was used to help create the test for
this fix, is:

-- doit.cc --
int main()
{
  class Foo {
  public:
    int doit ()
    {
      return 0;
    }
  };

  Foo foo;

  return foo.doit ();
}
-- end doit.cc --

gcc -o doit -flto -g doit.cc
gdb -q doit
Reading symbols from doit...
(gdb) ptype main::Foo
type = class Foo {
Segmentation fault (core dumped)

The segfault occurs due to a NULL physname in
c_type_print_base_struct_union in c-typeprint.c.  Specifically,
calling is_constructor_name() eventually causes the SIGSEGV is this
code in c-typeprint.c:

	      const char *physname = TYPE_FN_FIELD_PHYSNAME (f, j);
	      int is_full_physname_constructor =
		TYPE_FN_FIELD_CONSTRUCTOR (f, j)
		|| is_constructor_name (physname)
		|| is_destructor_name (physname)
		|| method_name[0] == '~';

However, looking at compute_delayed_physnames(), we see that
the TYPE_FN_FIELD_PHYSNAME field should never be NULL.  This
field will be set to "" for NULL physnames:

      physname = dwarf2_physname (mi.name, mi.die, cu);
      TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index)
	= physname ? physname : "";

For this particular case, it turns out that compute_delayed_physnames
wasn't being called, which left TYPE_FN_FIELD_PHYSNAME set to the NULL
value that it started with when that data structure was allocated.

The place to fix it, I think, is towards the end of
inherit_abstract_dies().

My first attempt at fix caused the origin CU's method_list (which is
simply the list of methods whose physnames still need to be computed)
to be added to the CU which is doing the inheriting.  One drawback
with this approach is that compute_delayed_physnames is (eventually)
called with a CU that's different than the CU in which the methods
were found.  It's not clear whether this will cause problems or not.

A safer approach, which is what I ultimately settled on, is to call
compute_delayed_physnames() from inherit_abstract_dies().  One
potential drawback is that all needed types might not be known at that
point.  However, in my testing, I haven't seen a problem along these
lines.

gdb/ChangeLog:

	* dwarf2read.c (inherit_abstract_dies): Ensure that delayed
	physnames are computed for inherited DIEs.

Change-Id: I6c6ffe96b301a9daab9f653956b89e3a33fa9445
2019-11-27 13:03:19 -07:00
Christian Biesinger 987012b89b Replace SYMBOL_*_NAME accessors with member functions
Similar to the MSYMBOL version of this patch, improves readability
and will eventually allow making name private.

gdb/ChangeLog:

2019-11-22  Christian Biesinger  <cbiesinger@google.com>

	* ada-exp.y: Update.
	* ada-lang.c (sort_choices): Update.
	(ada_print_symbol_signature): Update.
	(resolve_subexp): Update.
	(ada_parse_renaming): Update.
	(ada_read_renaming_var_value): Update.
	(lesseq_defined_than): Update.
	(remove_extra_symbols): Update.
	(remove_irrelevant_renamings): Update.
	(ada_add_block_symbols): Update.
	(ada_collect_symbol_completion_matches): Update.
	(ada_is_renaming_symbol): Update.
	(aggregate_assign_from_choices): Update.
	(ada_evaluate_subexp): Update.
	(ada_has_this_exception_support): Update.
	(ada_is_non_standard_exception_sym): Update.
	(ada_add_exceptions_from_frame): Update.
	(ada_add_global_exceptions): Update.
	(ada_print_subexp): Update.
	* ax-gdb.c (gen_var_ref): Update.
	(gen_maybe_namespace_elt): Update.
	(gen_expr_for_cast): Update.
	(gen_expr): Update.
	* block.h: Update.
	* blockframe.c (find_pc_partial_function): Update.
	* breakpoint.c (print_breakpoint_location): Update.
	(update_static_tracepoint): Update.
	* btrace.c (ftrace_print_function_name): Update.
	(ftrace_function_switched): Update.
	* buildsym.c (find_symbol_in_list): Update.
	* c-exp.y: Update.
	* c-typeprint.c (c_print_typedef): Update.
	(c_type_print_template_args): Update.
	* cli/cli-cmds.c (edit_command): Update.
	(list_command): Update.
	(print_sal_location): Update.
	* coffread.c (patch_opaque_types): Update.
	(process_coff_symbol): Update.
	(coff_read_enum_type): Update.
	* compile/compile-c-symbols.c (c_symbol_substitution_name): Update.
	(convert_one_symbol): Update.
	(hash_symname): Update.
	(eq_symname): Update.
	* compile/compile-cplus-symbols.c (convert_one_symbol): Update.
	* compile/compile-cplus-types.c (debug_print_scope): Update.
	* compile/compile-loc2c.c (do_compile_dwarf_expr_to_c): Update.
	* compile/compile-object-load.c (get_out_value_type): Update.
	* cp-namespace.c (cp_scan_for_anonymous_namespaces): Update.
	(search_symbol_list): Update.
	(cp_lookup_symbol_imports_or_template): Update.
	* cp-support.c (overload_list_add_symbol): Update.
	* ctfread.c (psymtab_to_symtab): Update.
	* dbxread.c (cp_set_block_scope): Update.
	* dictionary.c (iter_match_first_hashed): Update.
	(iter_match_next_hashed): Update.
	(insert_symbol_hashed): Update.
	(iter_match_next_linear): Update.
	* dictionary.h: Update.
	* dwarf2loc.c (func_get_frame_base_dwarf_block): Update.
	(locexpr_describe_location_piece): Update.
	(locexpr_describe_location_1): Update.
	(locexpr_generate_c_location): Update.
	(loclist_describe_location): Update.
	(loclist_generate_c_location): Update.
	* dwarf2read.c (dw2_debug_names_lookup_symbol): Update.
	(read_func_scope): Update.
	(process_enumeration_scope): Update.
	(new_symbol): Update.
	(dwarf2_const_value): Update.
	(dwarf2_symbol_mark_computed): Update.
	* eval.c (evaluate_funcall): Update.
	(evaluate_subexp_standard): Update.
	* expprint.c (print_subexp_standard): Update.
	(dump_subexp_body_standard): Update.
	* f-valprint.c (info_common_command_for_block): Update.
	* findvar.c (get_hosting_frame): Update.
	(default_read_var_value): Update.
	* go-lang.c (go_symbol_package_name): Update.
	* guile/scm-block.c (bkscm_print_block_smob): Update.
	* guile/scm-symbol.c (syscm_print_symbol_smob): Update.
	(gdbscm_symbol_name): Update.
	(gdbscm_symbol_linkage_name): Update.
	(gdbscm_symbol_print_name): Update.
	* infcall.c (get_function_name): Update.
	* infcmd.c (jump_command): Update.
	(finish_command): Update.
	* infrun.c (insert_exception_resume_breakpoint): Update.
	* linespec.c (canonicalize_linespec): Update.
	(create_sals_line_offset): Update.
	(convert_linespec_to_sals): Update.
	(complete_label): Update.
	(find_label_symbols_in_block): Update.
	* m2-typeprint.c (m2_print_typedef): Update.
	* mdebugread.c (mdebug_reg_to_regnum): Update.
	(parse_symbol): Update.
	(mylookup_symbol): Update.
	* mi/mi-cmd-stack.c (list_arg_or_local): Update.
	(list_args_or_locals): Update.
	* objc-lang.c (compare_selectors): Update.
	(info_selectors_command): Update.
	(compare_classes): Update.
	(info_classes_command): Update.
	(find_imps): Update.
	* p-typeprint.c (pascal_print_typedef): Update.
	* printcmd.c (build_address_symbolic): Update.
	(info_address_command): Update.
	(print_variable_and_value): Update.
	* python/py-framefilter.c (extract_sym): Update.
	(py_print_single_arg): Update.
	* python/py-symbol.c (sympy_str): Update.
	(sympy_get_name): Update.
	(sympy_get_linkage_name): Update.
	* python/python.c (gdbpy_rbreak): Update.
	* record-btrace.c (btrace_get_bfun_name): Update.
	(btrace_call_history): Update.
	* rust-lang.c (rust_print_typedef): Update.
	* solib-frv.c (frv_fdpic_find_canonical_descriptor): Update.
	* stabsread.c (stab_reg_to_regnum): Update.
	(define_symbol): Update.
	(read_enum_type): Update.
	(common_block_end): Update.
	(cleanup_undefined_types_1): Update.
	(scan_file_globals): Update.
	* stack.c (print_frame_arg): Update.
	(print_frame_args): Update.
	(find_frame_funname): Update.
	(info_frame_command_core): Update.
	(iterate_over_block_locals): Update.
	(print_block_frame_labels): Update.
	(do_print_variable_and_value): Update.
	(iterate_over_block_arg_vars): Update.
	(return_command): Update.
	* symmisc.c (dump_symtab_1): Update.
	(print_symbol): Update.
	* symtab.c (eq_symbol_entry): Update.
	(symbol_cache_dump): Update.
	(lookup_language_this): Update.
	(find_pc_sect_line): Update.
	(skip_prologue_sal): Update.
	(symbol_search::compare_search_syms): Update.
	(treg_matches_sym_type_name): Update.
	(search_symbols): Update.
	(print_symbol_info): Update.
	(rbreak_command): Update.
	(completion_list_add_symbol): Update.
	(find_gnu_ifunc): Update.
	(get_symbol_address): Update.
	(search_module_symbols): Update.
	(info_module_subcommand): Update.
	* symtab.h (SYMBOL_NATURAL_NAME): Remove.
	(SYMBOL_LINKAGE_NAME): Remove.
	(SYMBOL_DEMANGLED_NAME): Remove.
	(SYMBOL_PRINT_NAME): Remove.
	(SYMBOL_SEARCH_NAME): Remove.
	* tracepoint.c (set_traceframe_context): Update.
	(validate_actionline): Update.
	(collection_list::collect_symbol): Update.
	(encode_actions_1): Update.
	(info_scope_command): Update.
	(print_one_static_tracepoint_marker): Update.
	* typeprint.c (typedef_hash_table::add_template_parameters): Update.
	* valops.c (address_of_variable): Update.
	(find_overload_match): Update.
	(find_oload_champ): Update.

Change-Id: I76bdc8b44eea6876bf03af9d351f8e90cc0154b2
2019-11-22 12:05:14 -06:00
Peeter Joot 34877895ca Adjust byte order variable display/change if DW_AT_endianity is present.
- Rationale:
It is possible for compilers to indicate the desired byte order
interpretation of scalar variables using the DWARF attribute:
   DW_AT_endianity

A type flagged with this variable would typically use one of:
   DW_END_big
   DW_END_little
which instructs the debugger what the desired byte order interpretation
of the variable should be.

The GCC compiler (as of V6) has a mechanism for setting the desired byte
ordering of the fields within a structure or union.  For, example, on a
little endian target, a structure declared as:
   struct big {
       int v;
       short a[4];
   } __attribute__( ( scalar_storage_order( "big-endian" ) ) );
could be used to ensure all the structure members have a big-endian
interpretation (the compiler would automatically insert byte swap
instructions before and after respective store and load instructions).

- To reproduce
GCC V8 is required to correctly emit DW_AT_endianity DWARF attributes
in all situations when the scalar_storage_order attribute is used.

A fix for (dwarf endianity instrumentation) for GCC V6-V7 can be found
in the URL field of the following PR:
   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82509

- Test-case:
A new test case (testsuite/gdb.base/endianity.*) is included with this
patch.

Manual testing for mixed endianity code has also been done with GCC V8.
See:
   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82509#c4

- Observed vs. expected:

Without this change, using scalar_storage_order that doesn't match the
target, such as

struct otherendian
{
  int v;
} __attribute__( ( scalar_storage_order( "big-endian" ) ) );

would behave like the following on a little endian target:

   Breakpoint 1 at 0x401135: file endianity.c, line 41.
   (gdb) run
   Starting program: /home/pjoot/freeware/t/a.out
   Missing separate debuginfos, use: debuginfo-install glibc-2.17-292.el7.x86_64

   Breakpoint 1, main () at endianity.c:41
   41        struct otherendian o = {3};
   (gdb) n
   43        do_nothing (&o); /* START */
   (gdb) p o
   $1 = {v = 50331648}
   (gdb) p /x
   $2 = {v = 0x3000000}

whereas with this gdb enhancement we can access the variable with the user
specified endianity:

   Breakpoint 1, main () at endianity.c:41
   41        struct otherendian o = {3};
   (gdb) p o
   $1 = {v = 0}
   (gdb) n
   43        do_nothing (&o); /* START */
   (gdb) p o
   $2 = {v = 3}
   (gdb) p o.v = 4
   $3 = 4
   (gdb) p o.v
   $4 = 4
   (gdb) x/4xb &o.v
   0x7fffffffd90c: 0x00    0x00    0x00    0x04

(observe that the 4 byte int variable has a big endian representation in the
 hex dump.)

gdb/ChangeLog
2019-11-21  Peeter Joot  <peeter.joot@lzlabs.com>

	Byte reverse display of variables with DW_END_big, DW_END_little
	(DW_AT_endianity) dwarf attributes if different than the native
	byte order.
	* ada-lang.c (ada_value_binop):
	Use type_byte_order instead of gdbarch_byte_order.
	* ada-valprint.c (printstr):
	(ada_val_print_string):
	* ada-lang.c (value_pointer):
	(ada_value_binop):
	Use type_byte_order instead of gdbarch_byte_order.
	* c-lang.c (c_get_string):
	Use type_byte_order instead of gdbarch_byte_order.
	* c-valprint.c (c_val_print_array):
	Use type_byte_order instead of gdbarch_byte_order.
	* cp-valprint.c (cp_print_class_member):
	Use type_byte_order instead of gdbarch_byte_order.
	* dwarf2loc.c (rw_pieced_value):
	Use type_byte_order instead of gdbarch_byte_order.
	* dwarf2read.c (read_base_type): Handle DW_END_big,
	DW_END_little
	* f-lang.c (f_get_encoding):
	Use type_byte_order instead of gdbarch_byte_order.
	* findvar.c (default_read_var_value):
	Use type_byte_order instead of gdbarch_byte_order.
	* gdbtypes.c (check_types_equal):
	Require matching TYPE_ENDIANITY_NOT_DEFAULT if set.
	(recursive_dump_type): Print TYPE_ENDIANITY_BIG,
	and TYPE_ENDIANITY_LITTLE if set.
	(type_byte_order): new function.
	* gdbtypes.h (TYPE_ENDIANITY_NOT_DEFAULT): New macro.
	(struct main_type) <flag_endianity_not_default>:
	New field.
	(type_byte_order): New function.
	* infcmd.c (default_print_one_register_info):
	Use type_byte_order instead of gdbarch_byte_order.
	* p-lang.c (pascal_printstr):
	Use type_byte_order instead of gdbarch_byte_order.
	* p-valprint.c (pascal_val_print):
	Use type_byte_order instead of gdbarch_byte_order.
	* printcmd.c (print_scalar_formatted):
	Use type_byte_order instead of gdbarch_byte_order.
	* solib-darwin.c (darwin_current_sos):
	Use type_byte_order instead of gdbarch_byte_order.
	* solib-svr4.c (solib_svr4_r_ldsomap):
	Use type_byte_order instead of gdbarch_byte_order.
	* stap-probe.c (stap_modify_semaphore):
	Use type_byte_order instead of gdbarch_byte_order.
	* target-float.c (target_float_same_format_p):
	Use type_byte_order instead of gdbarch_byte_order.
	* valarith.c (scalar_binop):
	(value_bit_index):
	Use type_byte_order instead of gdbarch_byte_order.
	* valops.c (value_cast):
	Use type_byte_order instead of gdbarch_byte_order.
	* valprint.c (generic_emit_char):
	(generic_printstr):
	(val_print_string):
	Use type_byte_order instead of gdbarch_byte_order.
	* value.c (unpack_long):
	(unpack_bits_as_long):
	(unpack_value_bitfield):
	(modify_field):
	(pack_long):
	(pack_unsigned_long):
	Use type_byte_order instead of gdbarch_byte_order.
	* findvar.c (unsigned_pointer_to_address):
	(signed_pointer_to_address):
	(unsigned_address_to_pointer):
	(address_to_signed_pointer):
	(default_read_var_value):
	(default_value_from_register):
	Use type_byte_order instead of gdbarch_byte_order.
	* gnu-v3-abi.c (gnuv3_make_method_ptr):
	Use type_byte_order instead of gdbarch_byte_order.
	* riscv-tdep.c (riscv_print_one_register_info):
	Use type_byte_order instead of gdbarch_byte_order.

gdb/testsuite/ChangeLog
2019-11-21  Peeter Joot  <peeter.joot@lzlabs.com>

	* gdb.base/endianity.c: New test.
	* gdb.base/endianity.exp: New file.

Change-Id: I4bd98c1b4508c2d7c5a5dbb15d7b7b1cb4e667e2
2019-11-21 11:48:59 -07:00
Ali Tamur 435d3d8836 Replace "if (attr)" with "if (attr != nullptr)".
This is a cleanup patch in response to a reviewer comment on "Dwarf 5: Handle
debug_str_offsets" patch.
2019-11-19 11:37:53 -08:00
Christian Biesinger 468c0cbb32 Make struct symbol inherit from general_symbol_info
Since this is now no longer a POD, also give it a constructor that
initializes all fields. (I have considered overloading operator new
to zero-initialize the memory instead; let me know if you prefer that)

gdb/ChangeLog:

2019-11-12  Christian Biesinger  <cbiesinger@google.com>

	* ada-exp.y (write_ambiguous_var): Update.
	* buildsym.c (add_symbol_to_list): Update.
	* dwarf2read.c (read_variable): Update.
	(new_symbol): Update.
	* jit.c (finalize_symtab): Update.
	* language.c (language_alloc_type_symbol): Update.
	* symtab.c (fixup_symbol_section): Update.
	(initialize_objfile_symbol_1): Move code to...
	(initialize_objfile_symbol): ...here. Remove now-unnecessary memset.
	(allocate_symbol): Update.
	(allocate_template_symbol): Update.
	(get_symbol_address): Update.
	* symtab.h (struct symbol): Inherit from general_symbol_info instead
	of having as a field, and add a constructor.
	(SYMBOL_VALUE): Update.
	(SYMBOL_VALUE_ADDRESS): Update.
	(SET_SYMBOL_VALUE_ADDRESS): Update.
	(SYMBOL_VALUE_BYTES): Update.
	(SYMBOL_VALUE_COMMON_BLOCK): Update.
	(SYMBOL_BLOCK_VALUE): Update.
	(SYMBOL_VALUE_CHAIN): Update.
	(SYMBOL_LANGUAGE): Update.
	(SYMBOL_SECTION): Update.
	(SYMBOL_OBJ_SECTION): Update.
	(SYMBOL_SET_LANGUAGE): Update.
	(SYMBOL_SET_LINKAGE_NAME): Update.
	(SYMBOL_SET_NAMES): Update.
	(SYMBOL_NATURAL_NAME): Update.
	(SYMBOL_LINKAGE_NAME): Update.
	(SYMBOL_DEMANGLED_NAME): Update.
	(SYMBOL_SEARCH_NAME): Update.
	(SYMBOL_MATCHES_SEARCH_NAME): Update.
	(struct symbol): Update.
	(struct template_symbol): Update.
	(struct rust_vtable_symbol): Update.
	* xcoffread.c (SYMBOL_DUP): Update.

Change-Id: I05b1628455bcce3efaa101e65ef051708d17eb07
2019-11-12 15:21:35 -06:00
Andrew Burgess 59c35742fb gdb/fortran: Add new 'info modules' command
Add a new command 'info modules' that lists all of the modules GDB
knows about from the debug information.

A module is a debugging entity in the DWARF defined with
DW_TAG_module, currently Fortran is known to use this tag for its
modules.  I'm not aware of any other language that currently makes use
of DW_TAG_module.

The output style is similar to the 'info type' output:

    (gdb) info modules
    All defined modules:

    File info-types.f90:
    16:     mod1
    24:     mod2
    (gdb)

Where the user is told the file the module is defined in and, on the
left hand side, the line number at which the module is defined along
with the name of the module.

This patch is a new implementation of an idea originally worked on by
Mark O'Connor, Chris January, David Lecomber, and Xavier Oro from ARM.

gdb/ChangeLog:

	* dwarf2read.c (dw2_symtab_iter_next): Handle MODULE_DOMAIN.
	(dw2_expand_marked_cus): Handle MODULES_DOMAIN.
	(dw2_debug_names_iterator::next): Handle MODULE_DOMAIN and
	MODULES_DOMAIN.
	(scan_partial_symbols): Only create partial module symbols for non
	declarations.
	* psymtab.c (recursively_search_psymtabs): Handle MODULE_DOMAIN
	and MODULES_DOMAIN.
	* symtab.c (search_domain_name): Likewise.
	(search_symbols): Likewise.
	(print_symbol_info): Likewise.
	(symtab_symbol_info): Likewise.
	(info_modules_command): New function.
	(_initialize_symtab): Register 'info modules' command.
	* symtab.h (enum search_domain): Add MODULES_DOMAIN.
	* NEWS: Mention new 'info modules' command.

gdb/doc/ChangeLog:

	* gdb.texinfo (Symbols): Document new 'info modules' command.

gdb/testsuite/ChangeLog:

	* gdb.fortran/info-modules.exp: New file.
	* gdb.fortran/info-types.exp: Build with new file.
	* gdb.fortran/info-types.f90: Include and use new module.
	* gdb.fortran/info-types-2.f90: New file.

Change-Id: I2b781dd5a06bcad04620ccdc45f01a0f711adfad
2019-10-31 23:02:59 +00:00
Christian Biesinger 31edb80295 Change some arguments to gdb::string_view instead of name+len
Just some code cleanup. This change has a few benefits:
- Shorter argument list in the functions
- If the caller needs to calculate the string, they no longer
  need to explicitly call strlen
- It is easy to pass std::string to this (done in one place
  currently)

This also updates a couple of places that were passing 0/1 to
a bool parameter.

gdb/ChangeLog:

2019-10-29  Christian Biesinger  <cbiesinger@google.com>

	* coffread.c (record_minimal_symbol): Update.
	(process_coff_symbol): Update.
	* dbxread.c (read_dbx_symtab): Update.
	* dwarf2read.c (add_partial_symbol): Update.
	(fixup_go_packaging): Update.
	(load_partial_dies): Update.
	(new_symbol): Update.
	* elfread.c (record_minimal_symbol): Change signature to use
	gdb::string_view instead of name+len.
	(elf_symtab_read): Update.
	(elf_rel_plt_read): Update.
	* mdebugread.c (parse_partial_symbols): Update.
	(handle_psymbol_enumerators): Update.
	(new_symbol): Update.
	* minsyms.c (minimal_symbol_reader::record_full): Change signature
	to use gdb::string_view instead of name+len.
	* minsyms.h (class minimal_symbol_reader) <record_full>: Likewise.
	* psympriv.h (add_psymbol_to_list): Likewise.
	* psymtab.c (add_psymbol_to_bcache): Likewise.
	(add_psymbol_to_list): Likewise.
	* stabsread.c (define_symbol): Update.
	* symtab.c (symbol_set_names): Change signature to use gdb::string_view.
	* symtab.h (SYMBOL_SET_NAMES): Likewise.
	(symbol_set_names): Likewise.
	* xcoffread.c (scan_xcoff_symtab): Update.

Change-Id: I2675c6865e0368f9c755a1081088a53aa54dda4c
2019-10-29 14:19:59 -05:00
Ali Tamur 7ba99d2188 DWARF 5 support: Handle line table and file indexes
*  Fix handling of file and directory indexes in line tables; in DWARF 5 the
indexes are zero-based. Make file_names field private to abstract this detail
from the clients. Introduce file_names, is_valid_file_index and
file_names_size methods. Reflect these changes in clients.
*  Handle DW_FORM_data16 in read_formatted_entries; it is used to record MD5
of the file entries in DWARF 5.
*  Fix a bug in line header parsing that calculates the length of the header
incorrectly. (Seemingly this manifests itself only in DWARF 5).

Tested with CC=/usr/bin/gcc (version 8.3.0) against master branch (also with
-gsplit-dwarf and -gdwarf-4 flags) and there was no increase in the set of
tests that fails. (gdb still cannot debug a 'hello world' program with DWARF 5,
so for the time being, this is all we care about).

This is part of an effort to support DWARF 5 in gdb.

gdb/ChangeLog:

	* dwarf2read.c (dir_index): Change type.
	(file_name_index): Likewise.
	(line_header::include_dir_at): Change comment and implementation on
	whether it is DWARF 5.
	(line_header::is_valid_file_index): New function.
	(line_header::file_name_at): Change comment and implementation on
	whether it is DWARF 5.
	(line_header::file_names): Change to private field renamed as
	m_file_names and introduce a new accessor method.
	(line_header::file_names_size): New method.
	(line_header::include_dirs): Change to private field and rename as
	m_include_dirs.
	(dw2_get_file_names_reader): Define local var at a smaller scope and
	reflect API change.
	(dwarf2_cu::setup_type_unit_groups): Reflect API change.
	(process_structure_scope): Likewise.
	(line_header::add_include_dir): Change message and reflect renaming.
	(line_header::add_file_name): Likewise.
	(read_formatted_entries): Handle DW_FORM_data16.
	(dwarf_decode_line_header): Fix line header length calculation.
	(psymtab_include_file_name): Change comment and API.
	(lnp_state_machine::m_file): Update comment and reflect type change.
	(lnp_state_machine::record_line): Reflect type change.
	(dwarf_decode_lines): Reflect API change.
	(file_file_name): Likewise.
	(file_full_name): Likewise.
2019-10-21 14:22:12 -07:00
Tom de Vries 85102364b2 [gdb] Fix more typos in comments
Fix typos in comments.  NFC.

Tested on x86_64-linux.

gdb/ChangeLog:

2019-10-18  Tom de Vries  <tdevries@suse.de>

	* aarch64-tdep.c: Fix typos in comments.
	* ada-lang.c: Same.
	* ada-tasks.c: Same.
	* alpha-tdep.c: Same.
	* alpha-tdep.h: Same.
	* amd64-nat.c: Same.
	* amd64-windows-tdep.c: Same.
	* arc-tdep.c: Same.
	* arc-tdep.h: Same.
	* arch-utils.c: Same.
	* arm-nbsd-tdep.c: Same.
	* arm-tdep.c: Same.
	* ax-gdb.c: Same.
	* blockframe.c: Same.
	* btrace.c: Same.
	* c-varobj.c: Same.
	* coff-pe-read.c: Same.
	* coffread.c: Same.
	* cris-tdep.c: Same.
	* darwin-nat.c: Same.
	* dbxread.c: Same.
	* dcache.c: Same.
	* disasm.c: Same.
	* dtrace-probe.c: Same.
	* dwarf-index-write.c: Same.
	* dwarf2-frame-tailcall.c: Same.
	* dwarf2-frame.c: Same.
	* dwarf2read.c: Same.
	* eval.c: Same.
	* exceptions.c: Same.
	* fbsd-tdep.c: Same.
	* findvar.c: Same.
	* frame.c: Same.
	* frv-tdep.c: Same.
	* gnu-v3-abi.c: Same.
	* go32-nat.c: Same.
	* h8300-tdep.c: Same.
	* hppa-tdep.c: Same.
	* i386-linux-tdep.c: Same.
	* i386-tdep.c: Same.
	* ia64-libunwind-tdep.c: Same.
	* ia64-tdep.c: Same.
	* infcmd.c: Same.
	* infrun.c: Same.
	* linespec.c: Same.
	* linux-nat.c: Same.
	* linux-thread-db.c: Same.
	* machoread.c: Same.
	* mdebugread.c: Same.
	* mep-tdep.c: Same.
	* mn10300-tdep.c: Same.
	* namespace.c: Same.
	* objfiles.c: Same.
	* opencl-lang.c: Same.
	* or1k-tdep.c: Same.
	* osabi.c: Same.
	* ppc-linux-nat.c: Same.
	* ppc-linux-tdep.c: Same.
	* ppc-sysv-tdep.c: Same.
	* printcmd.c: Same.
	* procfs.c: Same.
	* record-btrace.c: Same.
	* record-full.c: Same.
	* remote-fileio.c: Same.
	* remote.c: Same.
	* rs6000-tdep.c: Same.
	* s12z-tdep.c: Same.
	* score-tdep.c: Same.
	* ser-base.c: Same.
	* ser-go32.c: Same.
	* skip.c: Same.
	* sol-thread.c: Same.
	* solib-svr4.c: Same.
	* solib.c: Same.
	* source.c: Same.
	* sparc-nat.c: Same.
	* sparc-sol2-tdep.c: Same.
	* sparc-tdep.c: Same.
	* sparc64-tdep.c: Same.
	* stabsread.c: Same.
	* stack.c: Same.
	* symfile.c: Same.
	* symtab.c: Same.
	* target-descriptions.c: Same.
	* target-float.c: Same.
	* thread.c: Same.
	* utils.c: Same.
	* valops.c: Same.
	* valprint.c: Same.
	* value.c: Same.
	* varobj.c: Same.
	* windows-nat.c: Same.
	* xcoffread.c: Same.
	* xstormy16-tdep.c: Same.
	* xtensa-tdep.c: Same.

Change-Id: I5175f1b107bfa4e1cdd4a3361ccb4739e53c75c4
2019-10-18 02:48:08 +02:00
Tom de Vries 405feb71d4 [gdb] Fix typos in comments
Fix typos in comments.  NFC.

Tested on x86_64-linux.

gdb/ChangeLog:

2019-10-17  Tom de Vries  <tdevries@suse.de>

	* arm-nbsd-nat.c: Fix typos in comments.
	* arm-tdep.c: Same.
	* darwin-nat-info.c: Same.
	* dwarf2read.c: Same.
	* elfread.c: Same.
	* event-top.c: Same.
	* findvar.c: Same.
	* gdbtypes.c: Same.
	* hppa-tdep.c: Same.
	* i386-tdep.c: Same.
	* jit.c: Same.
	* main.c: Same.
	* mdebugread.c: Same.
	* moxie-tdep.c: Same.
	* nto-procfs.c: Same.
	* osabi.c: Same.
	* ppc-linux-tdep.c: Same.
	* remote.c: Same.
	* riscv-tdep.c: Same.
	* s390-tdep.c: Same.
	* sh-tdep.c: Same.
	* sparc-linux-tdep.c: Same.
	* sparc-nat.c: Same.
	* stack.c: Same.
	* target-descriptions.c: Same.
	* top.c: Same.
	* varobj.c: Same.

Change-Id: I6047967abd2d51c9000dea15184d19f4e952c3ff
2019-10-17 18:06:36 +02:00
Keith Seitz 950b74950f DWARF reader: Reject sections with invalid sizes
This is another fuzzer bug, gdb/23567.  This time, the fuzzer has
specifically altered the size of .debug_str:

$ eu-readelf -S objdump
Section Headers:
[Nr] Name                 Type         Addr             Off      Size     ES Flags Lk Inf Al
[31] .debug_str           PROGBITS     0000000000000000 0057116d ffffffffffffffff  1 MS     0   0  1

When this file is loaded into GDB, the DWARF reader crashes attempting
to access the string table (or it may just store a bunch of nonsense):

[gdb-8.3-6-fc30]
$ gdb -nx -q objdump
BFD: warning: /path/to/objdump has a corrupt section with a size (ffffffffffffffff) larger than the file size
Reading symbols from /path/to/objdump...
Segmentation fault (core dumped)

Nick has already committed a BFD patch to issue the warning seen above.

[gdb master 6acc1a0b]
$ gdb -BFD: warning: /path/to/objdump has a corrupt section with a size (ffffffffffffffff) larger than the file size
Reading symbols from /path/to/objdump...
(gdb) inf func
All defined functions:

File ./../include/dwarf2.def:
186:	const

              8 *>(.:
                     ;'@�B);
747:	const

              8 *�(.:
                     ;'@�B);
701:	const

              8 *�D �
                     (.:
                        ;'@�B);
71:	const

              8 *(.:
                    ;'@�B);
/* and more gibberish  */

Consider read_indirect_string_at_offset_from:

static const char *
read_indirect_string_at_offset_from (struct objfile *objfile,
                                     bfd *abfd, LONGEST str_offset,
                                     struct dwarf2_section_info *sect,
                                     const char *form_name,
                                     const char *sect_name)
{
  dwarf2_read_section (objfile, sect);
  if (sect->buffer == NULL)
    error (_("%s used without %s section [in module %s]"),
           form_name, sect_name, bfd_get_filename (abfd));
  if (str_offset >= sect->size)
    error (_("%s pointing outside of %s section [in module %s]"),
           form_name, sect_name, bfd_get_filename (abfd));
  gdb_assert (HOST_CHAR_BIT == 8);
  if (sect->buffer[str_offset] == '\0')
    return NULL;
  return (const char *) (sect->buffer + str_offset);
}

With sect_size being ginormous, the code attempts to access
sect->buffer[GINORMOUS], and depending on the layout of memory,
GDB either stores a bunch of gibberish strings or crashes.

This is an attempt to mitigate this by implementing a similar approach
used by BFD. In our case, we simply reject the section with the invalid
length:

$ ./gdb -nx -q objdump
BFD: warning: /path/to/objdump has a corrupt section with a size (ffffffffffffffff) larger than the file size
Reading symbols from /path/to/objdump...

warning: Discarding section .debug_str which has a section size (ffffffffffffffff) larger than the file size [in module /path/to/objdump]
DW_FORM_strp used without .debug_str section [in module /path/to/objdump]
(No debugging symbols found in /path/to/objdump)
(gdb)

Unfortunately, I have not found a way to regression test this, since it
requires poking ELF section headers.

gdb/ChangeLog:
2019-10-16  Keith Seitz  <keiths@redhat.com>

	PR gdb/23567
	* dwarf2read.c (dwarf2_per_objfile::locate_sections): Discard
	sections whose size is greater than the file size.

Change-Id: I896ac3b4eb2207c54e8e05c16beab3051d9b4b2f
2019-10-16 11:35:16 -07:00
Andrew Burgess 0dc327459b gdb: Remove vec.{c,h} and update code to not include vec.h
Removes vec.c and vec.h from the source tree, and remove all the
remaining includes of vec.h.  There should be no user visible changes
after this commit.

I did have a few issues rebuilding GDB after applying this patch due
to cached dependencies, I found that running this command in the build
directory resolved my build issues without requiring a 'make clean':

    rm -fr gdb/gdbserver/gdbsupport/.deps/

gdb/ChangeLog:

	* Makefile.in: Remove references to vec.h and vec.c.
	* aarch64-tdep.c: No longer include vec.h.
	* ada-lang.c: Likewise.
	* ada-lang.h: Likewise.
	* arm-tdep.c: Likewise.
	* ax.h: Likewise.
	* breakpoint.h: Likewise.
	* charset.c: Likewise.
	* cp-support.h: Likewise.
	* dtrace-probe.c: Likewise.
	* dwarf2read.c: Likewise.
	* extension.h: Likewise.
	* gdb_bfd.c: Likewise.
	* gdbsupport/gdb_vecs.h: Likewise.
	* gdbsupport/vec.c: Remove.
	* gdbsupport/vec.h: Remove.
	* gdbthread.h: Likewise.
	* guile/scm-type.c: Likewise.
	* inline-frame.c: Likewise.
	* machoread.c: Likewise.
	* memattr.c: Likewise.
	* memrange.h: Likewise.
	* namespace.h: Likewise.
	* nat/linux-btrace.h: Likewise.
	* osdata.c: Likewise.
	* parser-defs.h: Likewise.
	* progspace.h: Likewise.
	* python/py-type.c: Likewise.
	* record-btrace.c: Likewise.
	* rust-exp.y: Likewise.
	* solib-target.c: Likewise.
	* stap-probe.c: Likewise.
	* target-descriptions.c: Likewise.
	* target-memory.c: Likewise.
	* target.h: Likewise.
	* varobj.c: Likewise.
	* varobj.h: Likewise.
	* xml-support.h: Likewise.

gdb/gdbserver/ChangeLog:

	* Makefile.in: Remove references to vec.c.

Change-Id: I0c91d7170bf1b5e992a387fcd9fe4f2abe343bb5
2019-10-15 21:31:55 +01:00
Andrew Burgess ae6400219c gdb: Remove use of VEC from dwarf2read.c
This removes a use of VEC from GDB, from dwarf2read.c.  This removal
is not very clean, and would probably benefit from additional
refactoring in the future.

The problem here is that the VEC is contained within struct
dwarf2_per_cu_data, which is treated as POD in dwarf2read.c.  As such
it is actually a VEC pointer.  When converting this to a std::vector
in an ideal world we would not use a std::vector pointer, and use the
std::vector directly.  Sadly, to do that would require some rewriting
in dwarf2read.c - my concern would be introducing bugs during this
rewrite.

If we move to a std::vector pointer then we need to take care to
handle the case where the pointer is null.  The old VEC library would
handle null for us, making the VEC interface very clean.  With
std::vector we need to handle the null pointer case ourselves.

The achieve this then I've added a small number of function that wrap
up access to the std::vector, hopefully hiding the null pointer
management.

The final ugliness with this conversion is that, ideally, when
wrapping a data member behind an interface I would make the data
member private, however, treating the structure as POD once again
prevents this, so we are left with the data member being public, but
access (ideally) being through the published interface functions.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* gdb/dwarf2read.c (dwarf2_per_objfile::~dwarf2_per_objfile):
	Update for new std::vector based implementation.
	(process_psymtab_comp_unit_reader): Likewise.
	(scan_partial_symbols): Likewise.
	(recursively_compute_inclusions): Likewise.
	(compute_compunit_symtab_includes): Likewise.
	(process_imported_unit_die): Likewise.
	(queue_and_load_dwo_tu): Likewise.
	(follow_die_sig_1): Likewise.
	* gdb/dwarf2read.h: Remove DEF_VEC_P.
	(typedef dwarf2_per_cu_ptr): Remove.
	(struct dwarf2_per_cu_data) <imported_symtabs_empty>: New
	function.
	(struct dwarf2_per_cu_data) <imported_symtabs_push>: New function.
	(struct dwarf2_per_cu_data) <imported_symtabs_size>: New function.
	(struct dwarf2_per_cu_data) <imported_symtabs_free>: New function.
	(struct dwarf2_per_cu_data) <imported_symtabs>: Change to
	std::vector.

Change-Id: Id0f4bda977c9dd83b0ba3d7fb42f7e5e2b6869c8
2019-10-15 20:12:25 +01:00
Simon Marchi 6acc1a0b9d gdb: remove unused includes from dwarf2read.c
include-what-you-use says:

../../../src/binutils-gdb/gdb/dwarf2read.c should remove these lines:
- #include <ctype.h>  // lines 67-67
- #include <sys/stat.h>  // lines 59-59
- #include <sys/types.h>  // lines 83-83
- #include <cmath>  // lines 88-88
- #include <forward_list>  // lines 90-90
- #include <set>  // lines 89-89
- #include <unordered_set>  // lines 85-85
- #include "completer.h"  // lines 60-60
- #include "expression.h"  // lines 44-44
- #include "gdbsupport/byte-vector.h"  // lines 78-78
- #include "gdbsupport/filestuff.h"  // lines 71-71
- #include "gdbsupport/gdb_unlinker.h"  // lines 74-74

After a quick glance, that makes sense, so this patch removes them.

gdb/ChangeLog:

	* dwarf2read.c: Remove includes.

Change-Id: I13cfcb2f1d747144fddba7f66b329630b79dae90
2019-10-14 10:15:51 -04:00
Tom Tromey 77c2dba3e8 Avoid crash on single-field union in Rust
PR rust/24976 points out a crash in gdb when a single-field union is
used in Rust.

The immediate problem was a NULL pointer dereference in
quirk_rust_enum.  However, that code is also erroneously treating a
single-field union as if it were a univariant enum.  Looking at the
output of an older Rust compiler, it turns out that univariant enums
are distinguished by having a single *anonymous* field.  This patch
changes quirk_rust_enum to limit its fixup to this case.

Tested with a new-enough version of the Rust compiler to cause the
crash; plus by using an older executable that uses the old univariant
encoding.

gdb/ChangeLog
2019-10-03  Tom Tromey  <tom@tromey.com>

	PR rust/24976:
	* dwarf2read.c (quirk_rust_enum): Handle single-element unions.

gdb/testsuite/ChangeLog
2019-10-03  Tom Tromey  <tom@tromey.com>

	PR rust/24976:
	* gdb.rust/simple.rs (Union2): New type.
	(main): Use Union2.
	* gdb.rust/simple.exp: Add test.
2019-10-03 20:56:22 -06:00
Andrew Burgess 0a4b09130a gdb/fortran: Nested subroutine support
This patch is a rebase and update of the following three patches:

   https://sourceware.org/ml/gdb-patches/2018-11/msg00298.html
   https://sourceware.org/ml/gdb-patches/2018-11/msg00302.html
   https://sourceware.org/ml/gdb-patches/2018-11/msg00301.html

I have merged these together into a single commit as the second patch,
adding scope support to nested subroutines, means that some of the
changes in the first patch are now no longer useful and would have to
be backed out.  The third patch is tightly coupled to the changes in
the second of these patches and I think deserves to live together with
it.

There is an extra change in cp-namespace.c that is new, this resolves
an issue with symbol lookup when placing breakpoints from within
nested subroutines.

There is also an extra test added to this commit 'nested-funcs-2.exp'
that was written by Richard Bunt from ARM, this offers some additional
testing of breakpoints on nested functions.

After this commit it is possible to place breakpoints on nested
Fortran subroutines and functions by using a fully scoped name, for
example, given this simple Fortran program:

    program greeting
      call message
    contains
      subroutine message
        print *, "Hello World"
      end subroutine message
    end program greeting

It is possible to place a breakpoint in 'message' with:

    (gdb) break greeting::message
    Breakpoint 1 at 0x4006c9: file basic.f90, line 5.

What doesn't work with this commit is placing a breakpoint like this:

    (gdb) break message
    Function "message" not defined.

Making this work will come in a later commit.

gdb/ChangeLog:

	* cp-namespace.c (cp_search_static_and_baseclasses): Only search
	for nested static variables when searchin VAR_DOMAIN.
	* dwarf2read.c (add_partial_symbol): Add nested subroutines to the
	global scope, update comment.
	(add_partial_subprogram): Call add_partial_subprogram recursively
	for nested subroutines when processinng Fortran.
	(load_partial_dies): Process the child entities of a subprogram
	when processing Fortran.
	(partial_die_parent_scope): Handle building scope
	for Fortran nested functions.
	(process_die): Record that nested functions have a scope.
	(new_symbol): Always record Fortran subprograms on the global
	symbol list.
	(determine_prefix): How to build the prefix for Fortran
	subprograms.

gdb/testsuite/ChangeLog:

	* gdb.fortran/nested-funcs.exp: Tests for placing breakpoints on
	nested functions.
	* gdb.fortran/nested-funcs.f90: Update expected results.
	* gdb.fortran/nested-funcs-2.exp: New file.
	* gdb.fortran/nested-funcs-2.f90: New file.

gdb/doc/ChangeLog:

	* doc/gdb.texinfo (Fortran Operators): Describe scope operator.
2019-10-03 21:25:22 +01:00
Andrew Burgess a8b3b8e93e gdb: Remove whitespace in 'std::vector <...>'
In the following 3 commits:

    commit df07e2c772
    Date:   Wed Sep 25 16:10:50 2019 +0100

        gdb: Remove a use of VEC from dwarf2read.{c,h}

    commit 554ac434b0
    Date:   Thu Sep 19 13:17:59 2019 -0400

        gdb: Change a VEC to std::vector in btrace.{c,h}

    commit 46f29a9a26
    Date:   Mon Sep 16 09:12:27 2019 -0400

        gdb: Remove a VEC from gdbsupport/btrace-common.h

I incorrectly wrote 'std::vector <...>' instead of 'std::vector<...>',
this commit fixes this mistake.  There should be no user visible
changes after this commit.

gdb/ChangeLog:

	* btrace.c (btrace_add_pc): Remove whitespace before the template
	parameter in 'std::vector <...>'.
	(parse_xml_btrace_block): Likewise.
	(btrace_maint_decode_pt): Likewise.
	(btrace_maint_update_packets): Likewise.
	(btrace_maint_print_packets): Likewise.
	* btrace.h (struct btrace_maint_info): Likewise.
	* dwarf2read.c (struct type_unit_group): Likewise.
	(build_type_psymtabs_reader): Likewise.
	* gdbsupport/btrace-common.c (btrace_data_append): Likewise.
	* gdbsupport/btrace-common.h (struct btrace_data_bts): Likewise.
	* nat/linux-btrace.c (perf_event_read_bts): Likewise.
2019-10-03 09:42:42 +01:00
Tom Tromey 4b610737f0 Handle copy relocations
In ELF, if a data symbol is defined in a shared library and used by
the main program, it will be subject to a "copy relocation".  In this
scenario, the main program has a copy of the symbol in question, and a
relocation that tells ld.so to copy the data from the shared library.
Then the symbol in the main program is used to satisfy all references.

This patch changes gdb to handle this scenario.  Data symbols coming
from ELF shared libraries get a special flag that indicates that the
symbol's address may be subject to copy relocation.

I looked briefly into handling copy relocations by looking at the
actual relocations in the main program, but this seemed difficult to
do with BFD.

Note that no caching is done here.  Perhaps this could be changed if
need be; I wanted to avoid possible problems with either objfile
lifetimes and changes, or conflicts with the long-term (vapor-ware)
objfile splitting project.

gdb/ChangeLog
2019-10-02  Tom Tromey  <tromey@adacore.com>

	* symmisc.c (dump_msymbols): Don't use MSYMBOL_VALUE_ADDRESS.
	* ada-lang.c (lesseq_defined_than): Handle
	LOC_STATIC.
	* dwarf2read.c (dwarf2_per_objfile): Add can_copy
	parameter.
	(dwarf2_has_info): Likewise.
	(new_symbol): Set maybe_copied on symbol when
	appropriate.
	* dwarf2read.h (dwarf2_per_objfile): Add can_copy
	parameter.
	<can_copy>: New member.
	* elfread.c (record_minimal_symbol): Set maybe_copied
	on symbol when appropriate.
	(elf_symfile_read): Update call to dwarf2_has_info.
	* minsyms.c (lookup_minimal_symbol_linkage): New
	function.
	* minsyms.h (lookup_minimal_symbol_linkage): Declare.
	* symtab.c (get_symbol_address, get_msymbol_address):
	New functions.
	* symtab.h (get_symbol_address, get_msymbol_address):
	Declare.
	(SYMBOL_VALUE_ADDRESS, MSYMBOL_VALUE_ADDRESS): Handle
	maybe_copied.
	(struct symbol, struct minimal_symbol) <maybe_copied>:
	New member.
2019-10-02 09:53:17 -06:00
Tom Tromey 38583298e0 Change SYMBOL_VALUE_ADDRESS to be an rvalue
This changes SYMBOL_VALUE_ADDRESS to be an rvalue.  The symbol readers
generally assign using this, so this also introduces
SET_SYMBOL_VALUE_ADDRESS and updates the readers.  Making this change
is useful in a subsequent patch, which redefined SYMBOL_VALUE_ADDRESS.

gdb/ChangeLog
2019-10-02  Tom Tromey  <tromey@adacore.com>

	* coffread.c (process_coff_symbol): Update.
	* dwarf2read.c (var_decode_location, new_symbol): Update.
	* mdebugread.c (parse_symbol): Update.
	* objfiles.c (relocate_one_symbol): Update.
	* stabsread.c (define_symbol, fix_common_block)
	(scan_file_globals): Update.
	* symtab.h (SYMBOL_VALUE_ADDRESS): Expand to an rvalue.
	(SET_SYMBOL_VALUE_ADDRESS): New macro.
	* xcoffread.c (process_xcoff_symbol): Update.
2019-10-02 09:53:17 -06:00
Andrew Burgess df07e2c772 gdb: Remove a use of VEC from dwarf2read.{c,h}
Removes a use of VEC from dwarf2read.{c,h} and replaces it with
std::vector.  As far as possible this is a like for like replacement
with minimal refactoring.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* dwarf2read.c (struct type_unit_group) <tus>: Convert to
	std::vector.
	(build_type_psymtabs_reader): Update for std::vector.
	(build_type_psymtab_dependencies): Likewise.
	* dwarf2read.h: Remove use of DEF_VEC_P.
	(typedef sig_type_ptr): Delete.
2019-10-02 14:05:51 +01:00
Ali Tamur 8fe0f950f4 [PATCH v2 2/4] DWARF 5 support: Handle DW_FORM_strx
* Handle DW_FORM_strx forms everywhere.

Tested with CC=/usr/bin/gcc (version 8.3.0) against master branch (also with
-gsplit-dwarf and -gdwarf-4 flags) and there was no increase in the set of
tests that fails.

This is part of an effort to support DWARF 5 in gdb.

gdb/ChangeLog:

        * dwarf2read.c (skip_one_die): Handle DW_FORM_strx forms.
        (dwarf2_string_attr): Likewise.
2019-09-30 18:00:41 -07:00
Ali Tamur 5f48f8f3c3 Remove extra whitespaces at the end of lines.
gdb/ChangeLog:

	* dwarf2read.c (process_full_comp_unit): Remove whitespace at the EOL.
	(process_full_type_unit): Likewise.
	(dump_die_shallow): Likewise.
	(cu_debug_loc_section): Likewise.
2019-09-30 14:00:52 -07:00
Alan Modra 00f93c4492 bfd macro conversion to inline functions
This converts some of the macros that access struct bfd fields to
inline functions.

bfd/
	* archive.c (bfd_generic_archive_p): Use bfd_set_thin_archive.
	* bfd-in.h (bfd_get_filename, bfd_get_cacheable, bfd_get_format),
	(bfd_get_target, bfd_get_flavour, bfd_family_coff, bfd_big_endian),
	(bfd_little_endian, bfd_header_big_endian, bfd_header_little_endian),
	(bfd_get_file_flags, bfd_applicable_file_flags),
	(bfd_applicable_section_flags, bfd_has_map, bfd_is_thin_archive),
	(bfd_valid_reloc_types, bfd_usrdata, bfd_get_start_address),
	(bfd_get_symcount, bfd_get_outsymbols, bfd_count_sections),
	(bfd_get_dynamic_symcount, bfd_get_symbol_leading_char): Delete.
	* bfd/bfd.c (bfd_get_filename, bfd_get_cacheable, bfd_get_format),
	(bfd_get_file_flags, bfd_get_start_address, bfd_get_symcount),
	(bfd_get_dynamic_symcount, bfd_get_outsymbols, bfd_count_sections),
	(bfd_has_map, bfd_is_thin_archive, bfd_set_thin_archive),
	(bfd_usrdata, bfd_set_usrdata): New inline functions.
	* targets.c (bfd_get_target, bfd_get_flavour),
	(bfd_applicable_file_flags, bfd_family_coff, bfd_big_endian),
	(bfd_little_endian, bfd_header_big_endian),
	(bfd_header_little_endian, bfd_applicable_section_flags),
	(bfd_get_symbol_leading_char): New inline functions.
	* bfd-in2.h: Regenerate.
binutils/
	* ar.c (write_archive): Use bfd_set_thin_archive.
gdb/
	* gdb_bfd.c (gdb_bfd_ref, gdb_bfd_unref): Use bfd_set_usrdata.
	* dwarf2read.c (dwarf2_read_gdb_index, dwarf2_read_debug_names),
	(read_indirect_string_from_dwz): Use bfd accessor.
	* dwarf2read.h (struct dwz_file <filename>): Likewise.
	* machoread.c (macho_symfile_read_all_oso): Likewise.
	* solib.c (solib_bfd_open): Likewise.
ld/
	* ldelf.c (ldelf_after_open, ldelf_place_orphan
	* ldlang.c (walk_wild_file, lang_process): Use bfd_usrdata.
	(load_symbols, ldlang_add_file): Use bfd_set_usrdata.
	* ldmain.c (add_archive_element): Use bfd_usrdata.
	* ldlang.h (bfd_input_just_syms): New inline function.
	* emultempl/aarch64elf.em (build_section_lists): Use it.
	* emultempl/mmo.em (mmo_place_orphan): Likewise.
	* emultempl/pe.em (gld_${EMULATION_NAME}_place_orphan): Likewise.
	* emultempl/pep.em (gld_${EMULATION_NAME}_place_orphan): Likewise.
	* emultempl/ppc64elf.em (build_section_lists): Likewise.
sim/
	* ppc/emul_generic.c (emul_add_tree_options): Delete old bfd code.
2019-09-20 18:04:02 +09:30
Alan Modra fd3619828e bfd_section_* macros
This large patch removes the unnecessary bfd parameter from various
bfd section macros and functions.  The bfd is hardly ever used and if
needed for the bfd_set_section_* or bfd_rename_section functions can
be found via section->owner except for the com, und, abs, and ind
std_section special sections.  Those sections shouldn't be modified
anyway.

The patch also removes various bfd_get_section_<field> macros,
replacing their use with bfd_section_<field>, and adds
bfd_set_section_lma.  I've also fixed a minor bug in gas where
compressed section renaming was done directly rather than calling
bfd_rename_section.  This would have broken bfd_get_section_by_name
and similar functions, but that hardly mattered at such a late stage
in gas processing.

bfd/
	* bfd-in.h (bfd_get_section_name, bfd_get_section_vma),
	(bfd_get_section_lma, bfd_get_section_alignment),
	(bfd_get_section_size, bfd_get_section_flags),
	(bfd_get_section_userdata): Delete.
	(bfd_section_name, bfd_section_size, bfd_section_vma),
	(bfd_section_lma, bfd_section_alignment): Lose bfd parameter.
	(bfd_section_flags, bfd_section_userdata): New.
	(bfd_is_com_section): Rename parameter.
	* section.c (bfd_set_section_userdata, bfd_set_section_vma),
	(bfd_set_section_alignment, bfd_set_section_flags, bfd_rename_section),
	(bfd_set_section_size): Delete bfd parameter, rename section parameter.
	(bfd_set_section_lma): New.
	* bfd-in2.h: Regenerate.
	* mach-o.c (bfd_mach_o_init_section_from_mach_o): Delete bfd param,
	update callers.
	* aoutx.h, * bfd.c, * coff-alpha.c, * coff-arm.c, * coff-mips.c,
	* coff64-rs6000.c, * coffcode.h, * coffgen.c, * cofflink.c,
	* compress.c, * ecoff.c, * elf-eh-frame.c, * elf-hppa.h,
	* elf-ifunc.c, * elf-m10200.c, * elf-m10300.c, * elf-properties.c,
	* elf-s390-common.c, * elf-vxworks.c, * elf.c, * elf32-arc.c,
	* elf32-arm.c, * elf32-avr.c, * elf32-bfin.c, * elf32-cr16.c,
	* elf32-cr16c.c, * elf32-cris.c, * elf32-crx.c, * elf32-csky.c,
	* elf32-d10v.c, * elf32-epiphany.c, * elf32-fr30.c, * elf32-frv.c,
	* elf32-ft32.c, * elf32-h8300.c, * elf32-hppa.c, * elf32-i386.c,
	* elf32-ip2k.c, * elf32-iq2000.c, * elf32-lm32.c, * elf32-m32c.c,
	* elf32-m32r.c, * elf32-m68hc1x.c, * elf32-m68k.c, * elf32-mcore.c,
	* elf32-mep.c, * elf32-metag.c, * elf32-microblaze.c,
	* elf32-moxie.c, * elf32-msp430.c, * elf32-mt.c, * elf32-nds32.c,
	* elf32-nios2.c, * elf32-or1k.c, * elf32-ppc.c, * elf32-pru.c,
	* elf32-rl78.c, * elf32-rx.c, * elf32-s390.c, * elf32-score.c,
	* elf32-score7.c, * elf32-sh.c, * elf32-spu.c, * elf32-tic6x.c,
	* elf32-tilepro.c, * elf32-v850.c, * elf32-vax.c, * elf32-visium.c,
	* elf32-xstormy16.c, * elf32-xtensa.c, * elf64-alpha.c,
	* elf64-bpf.c, * elf64-hppa.c, * elf64-ia64-vms.c, * elf64-mmix.c,
	* elf64-ppc.c, * elf64-s390.c, * elf64-sparc.c, * elf64-x86-64.c,
	* elflink.c, * elfnn-aarch64.c, * elfnn-ia64.c, * elfnn-riscv.c,
	* elfxx-aarch64.c, * elfxx-mips.c, * elfxx-sparc.c,
	* elfxx-tilegx.c, * elfxx-x86.c, * i386msdos.c, * linker.c,
	* mach-o.c, * mmo.c, * opncls.c, * pdp11.c, * pei-x86_64.c,
	* peicode.h, * reloc.c, * section.c, * syms.c, * vms-alpha.c,
	* xcofflink.c: Update throughout for bfd section macro and function
	changes.
binutils/
	* addr2line.c, * bucomm.c, * coffgrok.c, * dlltool.c, * nm.c,
	* objcopy.c, * objdump.c, * od-elf32_avr.c, * od-macho.c,
	* od-xcoff.c, * prdbg.c, * rdcoff.c, * rddbg.c, * rescoff.c,
	* resres.c, * size.c, * srconv.c, * strings.c, * windmc.c: Update
	throughout for bfd section macro and function changes.
gas/
	* as.c, * as.h, * dw2gencfi.c, * dwarf2dbg.c, * ecoff.c,
	* read.c, * stabs.c, * subsegs.c, * subsegs.h, * write.c,
	* config/obj-coff-seh.c, * config/obj-coff.c, * config/obj-ecoff.c,
	* config/obj-elf.c, * config/obj-macho.c, * config/obj-som.c,
	* config/tc-aarch64.c, * config/tc-alpha.c, * config/tc-arc.c,
	* config/tc-arm.c, * config/tc-avr.c, * config/tc-bfin.c,
	* config/tc-bpf.c, * config/tc-d10v.c, * config/tc-d30v.c,
	* config/tc-epiphany.c, * config/tc-fr30.c, * config/tc-frv.c,
	* config/tc-h8300.c, * config/tc-hppa.c, * config/tc-i386.c,
	* config/tc-ia64.c, * config/tc-ip2k.c, * config/tc-iq2000.c,
	* config/tc-lm32.c, * config/tc-m32c.c, * config/tc-m32r.c,
	* config/tc-m68hc11.c, * config/tc-mep.c, * config/tc-microblaze.c,
	* config/tc-mips.c, * config/tc-mmix.c, * config/tc-mn10200.c,
	* config/tc-mn10300.c, * config/tc-msp430.c, * config/tc-mt.c,
	* config/tc-nds32.c, * config/tc-or1k.c, * config/tc-ppc.c,
	* config/tc-pru.c, * config/tc-rl78.c, * config/tc-rx.c,
	* config/tc-s12z.c, * config/tc-s390.c, * config/tc-score.c,
	* config/tc-score7.c, * config/tc-sh.c, * config/tc-sparc.c,
	* config/tc-spu.c, * config/tc-tic4x.c, * config/tc-tic54x.c,
	* config/tc-tic6x.c, * config/tc-tilegx.c, * config/tc-tilepro.c,
	* config/tc-v850.c, * config/tc-visium.c, * config/tc-wasm32.c,
	* config/tc-xc16x.c, * config/tc-xgate.c, * config/tc-xstormy16.c,
	* config/tc-xtensa.c, * config/tc-z8k.c: Update throughout for
	bfd section macro and function changes.
	* write.c (compress_debug): Use bfd_rename_section.
gdb/
	* aarch64-linux-tdep.c, * arm-tdep.c, * auto-load.c,
	* coff-pe-read.c, * coffread.c, * corelow.c, * dbxread.c,
	* dicos-tdep.c, * dwarf2-frame.c, * dwarf2read.c, * elfread.c,
	* exec.c, * fbsd-tdep.c, * gcore.c, * gdb_bfd.c, * gdb_bfd.h,
	* hppa-tdep.c, * i386-cygwin-tdep.c, * i386-fbsd-tdep.c,
	* i386-linux-tdep.c, * jit.c, * linux-tdep.c, * machoread.c,
	* maint.c, * mdebugread.c, * minidebug.c, * mips-linux-tdep.c,
	* mips-sde-tdep.c, * mips-tdep.c, * mipsread.c, * nto-tdep.c,
	* objfiles.c, * objfiles.h, * osabi.c, * ppc-linux-tdep.c,
	* ppc64-tdep.c, * record-btrace.c, * record-full.c, * remote.c,
	* rs6000-aix-tdep.c, * rs6000-tdep.c, * s390-linux-tdep.c,
	* s390-tdep.c, * solib-aix.c, * solib-dsbt.c, * solib-frv.c,
	* solib-spu.c, * solib-svr4.c, * solib-target.c,
	* spu-linux-nat.c, * spu-tdep.c, * symfile-mem.c, * symfile.c,
	* symmisc.c, * symtab.c, * target.c, * windows-nat.c,
	* xcoffread.c, * cli/cli-dump.c, * compile/compile-object-load.c,
	* mi/mi-interp.c: Update throughout for bfd section macro and
	function changes.
	* gcore (gcore_create_callback): Use bfd_set_section_lma.
	* spu-tdep.c (spu_overlay_new_objfile): Likewise.
gprof/
	* corefile.c, * symtab.c: Update throughout for bfd section
	macro and function changes.
ld/
	* ldcref.c, * ldctor.c, * ldelf.c, * ldlang.c, * pe-dll.c,
	* emultempl/aarch64elf.em, * emultempl/aix.em,
	* emultempl/armcoff.em, * emultempl/armelf.em,
	* emultempl/cr16elf.em, * emultempl/cskyelf.em,
	* emultempl/m68hc1xelf.em, * emultempl/m68kelf.em,
	* emultempl/mipself.em, * emultempl/mmix-elfnmmo.em,
	* emultempl/mmo.em, * emultempl/msp430.em,
	* emultempl/nios2elf.em, * emultempl/pe.em, * emultempl/pep.em,
	* emultempl/ppc64elf.em, * emultempl/xtensaelf.em: Update
	throughout for bfd section macro and function changes.
libctf/
	* ctf-open-bfd.c: Update throughout for bfd section macro changes.
opcodes/
	* arc-ext.c: Update throughout for bfd section macro changes.
sim/
	* common/sim-load.c, * common/sim-utils.c, * cris/sim-if.c,
	* erc32/func.c, * lm32/sim-if.c, * m32c/load.c, * m32c/trace.c,
	* m68hc11/interp.c, * ppc/hw_htab.c, * ppc/hw_init.c,
	* rl78/load.c, * rl78/trace.c, * rx/gdb-if.c, * rx/load.c,
	* rx/trace.c: Update throughout for bfd section macro changes.
2019-09-19 09:40:13 +09:30
Christian Biesinger 491144b5e2 Change boolean options to bool instead of int
This is for add_setshow_boolean_cmd as well as the gdb::option interface.

gdb/ChangeLog:

2019-09-17  Christian Biesinger  <cbiesinger@google.com>

	* ada-lang.c (ada_ignore_descriptive_types_p): Change to bool.
	(print_signatures): Likewise.
	(trust_pad_over_xvs): Likewise.
	* arch/aarch64-insn.c (aarch64_debug): Likewise.
	* arch/aarch64-insn.h (aarch64_debug): Likewise.
	* arm-linux-nat.c (arm_apcs_32): Likewise.
	* arm-linux-tdep.c (arm_apcs_32): Likewise.
	* arm-nbsd-nat.c (arm_apcs_32): Likewise.
	* arm-tdep.c (arm_debug): Likewise.
	(arm_apcs_32): Likewise.
	* auto-load.c (debug_auto_load): Likewise.
	(auto_load_gdb_scripts): Likewise.
	(global_auto_load): Likewise.
	(auto_load_local_gdbinit): Likewise.
	(auto_load_local_gdbinit_loaded): Likewise.
	* auto-load.h (global_auto_load): Likewise.
	(auto_load_local_gdbinit): Likewise.
	(auto_load_local_gdbinit_loaded): Likewise.
	* breakpoint.c (disconnected_dprintf): Likewise.
	(breakpoint_proceeded): Likewise.
	(automatic_hardware_breakpoints): Likewise.
	(always_inserted_mode): Likewise.
	(target_exact_watchpoints): Likewise.
	(_initialize_breakpoint): Update.
	* breakpoint.h (target_exact_watchpoints): Change to bool.
	* btrace.c (maint_btrace_pt_skip_pad): Likewise.
	* cli/cli-cmds.c (trace_commands): Likewise.
	* cli/cli-cmds.h (trace_commands): Likewise.
	* cli/cli-decode.c (add_setshow_boolean_cmd): Change int* argument
	to bool*.
	* cli/cli-logging.c (logging_overwrite): Change to bool.
	(logging_redirect): Likewise.
	(debug_redirect): Likewise.
	* cli/cli-option.h (option_def) <boolean>: Change return type to bool*.
	(struct boolean_option_def) <get_var_address_cb_>: Change return type
	to bool.
	<boolean_option_def>: Update.
	(struct flag_option_def): Change default type of Context to bool
	from int.
	<flag_option_def>: Change return type of var_address_cb_ to bool*.
	* cli/cli-setshow.c (do_set_command): Cast to bool* instead of int*.
	(get_setshow_command_value_string): Likewise.
	* cli/cli-style.c (cli_styling): Change to bool.
	(source_styling): Likewise.
	* cli/cli-style.h (source_styling): Likewise.
	(cli_styling): Likewise.
	* cli/cli-utils.h (struct qcs_flags) <quiet, cont, silent>: Change
	to bool.
	* command.h (var_types): Update comment.
	(add_setshow_boolean_cmd): Change int* var argument to bool*.
	* compile/compile-cplus-types.c (debug_compile_cplus_types): Change to
	bool.
	(debug_compile_cplus_scopes): Likewise.
	* compile/compile-internal.h (compile_debug): Likewise.
	* compile/compile.c (compile_debug): Likewise.
	(struct compile_options) <raw>: Likewise.
	* cp-support.c (catch_demangler_crashes): Likewise.
	* cris-tdep.c (usr_cmd_cris_version_valid): Likewise.
	(usr_cmd_cris_dwarf2_cfi): Likewise.
	* csky-tdep.c (csky_debug): Likewise.
	* darwin-nat.c (enable_mach_exceptions): Likewise.
	* dcache.c (dcache_enabled_p): Likewise.
	* defs.h (info_verbose): Likewise.
	* demangle.c (demangle): Likewise.
	(asm_demangle): Likewise.
	* dwarf-index-cache.c (debug_index_cache): Likewise.
	* dwarf2-frame.c (dwarf2_frame_unwinders_enabled_p): Likewise.
	* dwarf2-frame.h (dwarf2_frame_unwinders_enabled_p): Likewise.
	* dwarf2read.c (check_physname): Likewise.
	(use_deprecated_index_sections): Likewise.
	(dwarf_always_disassemble): Likewise.
	* eval.c (overload_resolution): Likewise.
	* event-top.c (set_editing_cmd_var): Likewise.
	(exec_done_display_p): Likewise.
	* event-top.h (set_editing_cmd_var): Likewise.
	(exec_done_display_p): Likewise.
	* exec.c (write_files): Likewise.
	* fbsd-nat.c (debug_fbsd_lwp): Likewise
	(debug_fbsd_nat): Likewise.
	* frame.h (struct frame_print_options) <print_raw_frame_arguments>:
	Likewise.
	(struct set_backtrace_options) <backtrace_past_main>: Likewise.
	<backtrace_past_entry> Likewise.
	* gdb-demangle.h (demangle): Likewise.
	(asm_demangle): Likewise.
	* gdb_bfd.c (bfd_sharing): Likewise.
	* gdbcore.h (write_files): Likewise.
	* gdbsupport/common-debug.c (show_debug_regs): Likewise.
	* gdbsupport/common-debug.h (show_debug_regs): Likewise.
	* gdbthread.h (print_thread_events): Likewise.
	* gdbtypes.c (opaque_type_resolution): Likewise.
	(strict_type_checking): Likewise.
	* gnu-nat.c (gnu_debug_flag): Likewise.
	* guile/scm-auto-load.c (auto_load_guile_scripts): Likewise.
	* guile/scm-param.c (pascm_variable): Add boolval.
	(add_setshow_generic): Update.
	(pascm_param_value): Update.
	(pascm_set_param_value_x): Update.
	* hppa-tdep.c (hppa_debug): Change to bool..
	* infcall.c (may_call_functions_p): Likewise.
	(coerce_float_to_double_p): Likewise.
	(unwind_on_signal_p): Likewise.
	(unwind_on_terminating_exception_p): Likewise.
	* infcmd.c (startup_with_shell): Likewise.
	* inferior.c (print_inferior_events): Likewise.
	* inferior.h (startup_with_shell): Likewise.
	(print_inferior_events): Likewise.
	* infrun.c (step_stop_if_no_debug): Likewise.
	(detach_fork): Likewise.
	(debug_displaced): Likewise.
	(disable_randomization): Likewise.
	(non_stop): Likewise.
	(non_stop_1): Likewise.
	(observer_mode): Likewise.
	(observer_mode_1): Likewise.
	(set_observer_mode): Update.
	(sched_multi): Change to bool.
	* infrun.h (debug_displaced): Likewise.
	(sched_multi): Likewise.
	(step_stop_if_no_debug): Likewise.
	(non_stop): Likewise.
	(disable_randomization): Likewise.
	* linux-tdep.c (use_coredump_filter): Likewise.
	(dump_excluded_mappings): Likewise.
	* linux-thread-db.c (auto_load_thread_db): Likewise.
	(check_thread_db_on_load): Likewise.
	* main.c (captured_main_1): Update.
	* maint-test-options.c (struct test_options_opts) <flag_opt, xx1_opt,
	xx2_opt, boolean_opt>: Change to bool.
	* maint-test-settings.c (maintenance_test_settings_boolean): Likewise.
	* maint.c (maintenance_profile_p): Likewise.
	(per_command_time): Likewise.
	(per_command_space): Likewise.
	(per_command_symtab): Likewise.
	* memattr.c (inaccessible_by_default): Likewise.
	* mi/mi-main.c (mi_async): Likewise.
	(mi_async_1): Likewise.
	* mips-tdep.c (mips64_transfers_32bit_regs_p): Likewise.
	* nat/fork-inferior.h (startup_with_shell): Likewise.
	* nat/linux-namespaces.c (debug_linux_namespaces): Likewise.
	* nat/linux-namespaces.h (debug_linux_namespaces): Likewise.
	* nios2-tdep.c (nios2_debug): Likewise.
	* or1k-tdep.c (or1k_debug): Likewise.
	* parse.c (parser_debug): Likewise.
	* parser-defs.h (parser_debug): Likewise.
	* printcmd.c (print_symbol_filename): Likewise.
	* proc-api.c (procfs_trace): Likewise.
	* python/py-auto-load.c (auto_load_python_scripts): Likewise.
	* python/py-param.c (union parmpy_variable): Add "bool boolval" field.
	(set_parameter_value): Update.
	(add_setshow_generic): Update.
	* python/py-value.c (copy_py_bool_obj): Change argument from int*
	to bool*.
	* python/python.c (gdbpy_parameter_value): Cast to bool* instead of
	int*.
	* ravenscar-thread.c (ravenscar_task_support): Change to bool.
	* record-btrace.c (record_btrace_target::store_registers): Update.
	* record-full.c (record_full_memory_query): Change to bool.
	(record_full_stop_at_limit): Likewise.
	* record-full.h (record_full_memory_query): Likewise.
	* remote-notif.c (notif_debug): Likewise.
	* remote-notif.h (notif_debug): Likewise.
	* remote.c (use_range_stepping): Likewise.
	(interrupt_on_connect): Likewise.
	(remote_break): Likewise.
	* ser-tcp.c (tcp_auto_retry): Likewise.
	* ser-unix.c (serial_hwflow): Likewise.
	* skip.c (debug_skip): Likewise.
	* solib-aix.c (solib_aix_debug): Likewise.
	* spu-tdep.c (spu_stop_on_load_p): Likewise.
	(spu_auto_flush_cache_p): Likewise.
	* stack.c (struct backtrace_cmd_options) <full, no_filters, hide>:
	Likewise.
	(struct info_print_options) <quiet>: Likewise.
	* symfile-debug.c (debug_symfile): Likewise.
	* symfile.c (auto_solib_add): Likewise.
	(separate_debug_file_debug): Likewise.
	* symfile.h (auto_solib_add): Likewise.
	(separate_debug_file_debug): Likewise.
	* symtab.c (basenames_may_differ): Likewise.
	(struct filename_partial_match_opts) <dirname, basename>: Likewise.
	(struct info_print_options) <quiet, exclude_minsyms>: Likewise.
	(struct info_types_options) <quiet>: Likewise.
	* symtab.h (demangle): Likewise.
	(basenames_may_differ): Likewise.
	* target-dcache.c (stack_cache_enabled_1): Likewise.
	(code_cache_enabled_1): Likewise.
	* target.c (trust_readonly): Likewise.
	(may_write_registers): Likewise.
	(may_write_memory): Likewise.
	(may_insert_breakpoints): Likewise.
	(may_insert_tracepoints): Likewise.
	(may_insert_fast_tracepoints): Likewise.
	(may_stop): Likewise.
	(auto_connect_native_target): Likewise.
	(target_stop_and_wait): Update.
	(target_async_permitted): Change to bool.
	(target_async_permitted_1): Likewise.
	(may_write_registers_1): Likewise.
	(may_write_memory_1): Likewise.
	(may_insert_breakpoints_1): Likewise.
	(may_insert_tracepoints_1): Likewise.
	(may_insert_fast_tracepoints_1): Likewise.
	(may_stop_1): Likewise.
	* target.h (target_async_permitted): Likewise.
	(may_write_registers): Likewise.
	(may_write_memory): Likewise.
	(may_insert_breakpoints): Likewise.
	(may_insert_tracepoints): Likewise.
	(may_insert_fast_tracepoints): Likewise.
	(may_stop): Likewise.
	* thread.c (struct info_threads_opts) <show_global_ids>: Likewise.
	(make_thread_apply_all_options_def_group): Change argument from int*
	to bool*.
	(thread_apply_all_command): Update.
	(print_thread_events): Change to bool.
	* top.c (confirm): Likewise.
	(command_editing_p): Likewise.
	(history_expansion_p): Likewise.
	(write_history_p): Likewise.
	(info_verbose): Likewise.
	* top.h (confirm): Likewise.
	(history_expansion_p): Likewise.
	* tracepoint.c (disconnected_tracing): Likewise.
	(circular_trace_buffer): Likewise.
	* typeprint.c (print_methods): Likewise.
	(print_typedefs): Likewise.
	* utils.c (debug_timestamp): Likewise.
	(sevenbit_strings): Likewise.
	(pagination_enabled): Likewise.
	* utils.h (sevenbit_strings): Likewise.
	(pagination_enabled): Likewise.
	* valops.c (overload_resolution): Likewise.
	* valprint.h (struct value_print_options) <prettyformat_arrays,
	prettyformat_structs, vtblprint, unionprint, addressprint, objectprint,
	stop_print_at_null, print_array_indexes, deref_ref, static_field_print,
	pascal_static_field_print, raw, summary, symbol_print, finish_print>:
	Likewise.
	* windows-nat.c (new_console): Likewise.
	(cygwin_exceptions): Likewise.
	(new_group): Likewise.
	(debug_exec): Likewise.
	(debug_events): Likewise.
	(debug_memory): Likewise.
	(debug_exceptions): Likewise.
	(useshell): Likewise.
	* windows-tdep.c (maint_display_all_tib): Likewise.
	* xml-support.c (debug_xml): Likewise.
2019-09-18 09:35:12 +09:00
Christian Biesinger 67547d896b Change the type of copy_names from int to bool
This parameter is really a boolean, so change the type accordingly
and update the callers.

This is for symbol_set_names, add_psymbol_to_bcache, and
add_psymbol_to_list.

minimal_symbol_reader::record_full was already passing a bool
to symbol_set_names.

gdb/ChangeLog:

2019-09-11  Christian Biesinger  <cbiesinger@google.com>

	* dbxread.c (read_dbx_symtab): Update.
	* dwarf2read.c (load_partial_dies): Update.
	* mdebugread.c (parse_partial_symbols): Update.
	(handle_psymbol_enumerators): Update.
	* psympriv.h (add_psymbol_to_list): Change type of copy_names to bool.
	* psymtab.c (add_psymbol_to_bcache): Likewise.
	(add_psymbol_to_list): Likewise.
	* symtab.c (symbol_set_names): Likewise.
	* symtab.h (symbol_set_names): Likewise.
	* xcoffread.c (scan_xcoff_symtab): Update.
2019-09-11 12:43:45 -05:00
Tom Tromey 3b00ef10a2 Add Ada support for .debug_names
This patch adds support for Ada to .debug_names.  I opted to leave
.gdb_index alone, because in my view it is a defunct format.

gdb/ChangeLog
2019-09-10  Tom Tromey  <tromey@adacore.com>

	* dwarf-index-write.c (write_psymbols): Extend error message.
	(debug_names::insert): Add Ada code.
	(debug_names::write_psymbols): Remove Ada check.
	(debug_names) <m_string_obstack>: New member.
	* dwarf2read.c (gdb_index_symbol_name_matcher): Remove.
	(gdb_index_symbol_name_matcher::matches): Remove.
	(mapped_index_base::find_name_components_bounds): Add "lang"
	parameter.
	(mapped_index_base::build_name_components): Also split names
	according to Ada syntax.
	(dw2_expand_symtabs_matching_symbol): Loop over languages.  Change
	type of "match_callback".
	(check_match, check_find_bounds_finds)
	(dw2_expand_symtabs_matching): Update.
	(dw2_debug_names_iterator): Add new constructor.
	(dw2_debug_names_map_matching_symbols): New function.
	(dw2_debug_names_expand_symtabs_matching): Update.
	(dwarf2_debug_names_functions): Use
	dw2_debug_names_map_matching_symbols.
2019-09-10 08:30:45 -06:00
Tom Tromey aa39165480 Fix latent bug in .debug_names file-name handling
An internal Ada test case showed that the .debug_names code does not
compute the same list of file names as the partial symbol reader.  In
particular, the partial symbol reader uses the DW_AT_name of the CU:

  /* Allocate a new partial symbol table structure.  */
  filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu);
  if (filename == NULL)
    filename = "";

  pst = create_partial_symtab (per_cu, filename);

This patch changes the .debug_names reader to follow.

gdb/ChangeLog
2019-09-10  Tom Tromey  <tromey@adacore.com>

	* dwarf2read.c (dw2_get_file_names_reader): Add the
	CU's file name to the results.

gdb/testsuite/ChangeLog
2019-09-10  Tom Tromey  <tromey@adacore.com>

	* gdb.ada/dgopt.exp: New file.
	* gdb.ada/dgopt/x.adb: New file.
2019-09-10 08:30:45 -06:00
Tom Tromey b054970d54 Change map_matching_symbols to take a lookup_name_info
This patch further simplifies the map_matching_symbols callback, by
having it take a lookup_name_info rather than a plain string.

gdb/ChangeLog
2019-09-10  Tom Tromey  <tromey@adacore.com>

	* ada-lang.c (add_nonlocal_symbols): Combine calls to
	map_matching_symbols.  Update.
	* dwarf2read.c (dw2_map_matching_symbols): Update.
	* psymtab.c (match_partial_symbol): Change type; update.
	(psym_map_matching_symbols): Likewise.
	* symfile-debug.c (debug_qf_map_matching_symbols): Change
	type; update.
	* symfile.h (struct quick_symbol_functions)
	<map_matching_symbols>: Change "name" to be a lookup_name_info.
	Remove "match".
2019-09-10 08:30:45 -06:00