X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=gdb%2Fmain.c;h=ec2b7b017524d5df5a1e27c79cb2743312cae3c4;hb=387e00f3b3e6ea3719f144d7090c1a242174be4d;hp=79f14b7246b49faf59895cbbd936b80daa8d3a26;hpb=895b8f306b1f54d85915ca0d24368f40b2e42554;p=binutils-gdb.git diff --git a/gdb/main.c b/gdb/main.c index 79f14b7246b..ec2b7b01752 100644 --- a/gdb/main.c +++ b/gdb/main.c @@ -1,6 +1,6 @@ /* Top level stuff for GDB, the GNU debugger. - Copyright (C) 1986-2017 Free Software Foundation, Inc. + Copyright (C) 1986-2022 Free Software Foundation, Inc. This file is part of GDB. @@ -28,7 +28,7 @@ #include #include #include -#include "event-loop.h" +#include "gdbsupport/event-loop.h" #include "ui-out.h" #include "interps.h" @@ -40,26 +40,32 @@ #include "maint.h" #include "filenames.h" -#include "filestuff.h" +#include "gdbsupport/filestuff.h" #include #include "event-top.h" #include "infrun.h" -#include "signals-state-save-restore.h" +#include "gdbsupport/signals-state-save-restore.h" +#include #include +#include "gdbsupport/pathstuff.h" +#include "cli/cli-style.h" +#ifdef GDBTK +#include "gdbtk/generic/gdbtk.h" +#endif +#include "gdbsupport/alt-stack.h" +#include "observable.h" +#include "serial.h" /* The selected interpreter. This will be used as a set command variable, so it should always be malloc'ed - since do_setshow_command will free it. */ char *interpreter_p; -/* Whether dbx commands will be handled. */ -int dbx_commands = 0; - /* System root path, used to find libraries etc. */ -char *gdb_sysroot = 0; +std::string gdb_sysroot; /* GDB datadir, used to store data files. */ -char *gdb_datadir = 0; +std::string gdb_datadir; /* Non-zero if GDB_DATADIR was provided on the command line. This doesn't track whether data-directory is set later from the @@ -68,7 +74,7 @@ static int gdb_datadir_provided = 0; /* If gdb was configured with --with-python=/path, the possibly relocated path to python's lib directory. */ -char *python_libdir = 0; +std::string python_libdir; /* Target IO streams. */ struct ui_file *gdb_stdtargin; @@ -113,139 +119,187 @@ set_gdb_data_directory (const char *new_datadir) { int save_errno = errno; - fprintf_unfiltered (gdb_stderr, "Warning: "); + gdb_printf (gdb_stderr, "Warning: "); print_sys_errmsg (new_datadir, save_errno); } else if (!S_ISDIR (st.st_mode)) - warning (_("%s is not a directory."), new_datadir); + warning (_("%ps is not a directory."), + styled_string (file_name_style.style (), new_datadir)); - xfree (gdb_datadir); - gdb_datadir = gdb_realpath (new_datadir).release (); + gdb_datadir = gdb_realpath (new_datadir).get (); /* gdb_realpath won't return an absolute path if the path doesn't exist, but we still want to record an absolute path here. If the user entered "../foo" and "../foo" doesn't exist then we'll record $(pwd)/../foo which isn't canonical, but that's ok. */ - if (!IS_ABSOLUTE_PATH (gdb_datadir)) - { - gdb::unique_xmalloc_ptr abs_datadir = gdb_abspath (gdb_datadir); - - xfree (gdb_datadir); - gdb_datadir = abs_datadir.release (); - } + if (!IS_ABSOLUTE_PATH (gdb_datadir.c_str ())) + gdb_datadir = gdb_abspath (gdb_datadir.c_str ()); } /* Relocate a file or directory. PROGNAME is the name by which gdb was invoked (i.e., argv[0]). INITIAL is the default value for the - file or directory. FLAG is true if the value is relocatable, false - otherwise. Returns a newly allocated string; this may return NULL - under the same conditions as make_relative_prefix. */ + file or directory. RELOCATABLE is true if the value is relocatable, + false otherwise. This may return an empty string under the same + conditions as make_relative_prefix returning NULL. */ -static char * -relocate_path (const char *progname, const char *initial, int flag) +static std::string +relocate_path (const char *progname, const char *initial, bool relocatable) { - if (flag) - return make_relative_prefix (progname, BINDIR, initial); - return xstrdup (initial); + if (relocatable) + { + gdb::unique_xmalloc_ptr str (make_relative_prefix (progname, + BINDIR, + initial)); + if (str != nullptr) + return str.get (); + return std::string (); + } + return initial; } /* Like relocate_path, but specifically checks for a directory. INITIAL is relocated according to the rules of relocate_path. If the result is a directory, it is used; otherwise, INITIAL is used. - The chosen directory is then canonicalized using lrealpath. This - function always returns a newly-allocated string. */ + The chosen directory is then canonicalized using lrealpath. */ -char * -relocate_gdb_directory (const char *initial, int flag) +std::string +relocate_gdb_directory (const char *initial, bool relocatable) { - char *dir; - - dir = relocate_path (gdb_program_name, initial, flag); - if (dir) + std::string dir = relocate_path (gdb_program_name, initial, relocatable); + if (!dir.empty ()) { struct stat s; - if (*dir == '\0' || stat (dir, &s) != 0 || !S_ISDIR (s.st_mode)) + if (stat (dir.c_str (), &s) != 0 || !S_ISDIR (s.st_mode)) { - xfree (dir); - dir = NULL; + dir.clear (); } } - if (!dir) - dir = xstrdup (initial); + if (dir.empty ()) + dir = initial; /* Canonicalize the directory. */ - if (*dir) + if (!dir.empty ()) { - char *canon_sysroot = lrealpath (dir); + gdb::unique_xmalloc_ptr canon_sysroot (lrealpath (dir.c_str ())); if (canon_sysroot) - { - xfree (dir); - dir = canon_sysroot; - } + dir = canon_sysroot.get (); } return dir; } -/* Compute the locations of init files that GDB should source and - return them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If - there is no system gdbinit (resp. home gdbinit and local gdbinit) - to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and - LOCAL_GDBINIT) is set to NULL. */ -static void -get_init_files (const char **system_gdbinit, - const char **home_gdbinit, - const char **local_gdbinit) +/* Given a gdbinit path in FILE, adjusts it according to the gdb_datadir + parameter if it is in the data dir, or passes it through relocate_path + otherwise. */ + +static std::string +relocate_file_path_maybe_in_datadir (const std::string &file, + bool relocatable) { - static const char *sysgdbinit = NULL; - static char *homeinit = NULL; - static const char *localinit = NULL; - static int initialized = 0; + size_t datadir_len = strlen (GDB_DATADIR); + + std::string relocated_path; - if (!initialized) + /* If SYSTEM_GDBINIT lives in data-directory, and data-directory + has been provided, search for SYSTEM_GDBINIT there. */ + if (gdb_datadir_provided + && datadir_len < file.length () + && filename_ncmp (file.c_str (), GDB_DATADIR, datadir_len) == 0 + && IS_DIR_SEPARATOR (file[datadir_len])) { - struct stat homebuf, cwdbuf, s; - char *homedir; + /* Append the part of SYSTEM_GDBINIT that follows GDB_DATADIR + to gdb_datadir. */ - if (SYSTEM_GDBINIT[0]) - { - int datadir_len = strlen (GDB_DATADIR); - int sys_gdbinit_len = strlen (SYSTEM_GDBINIT); - char *relocated_sysgdbinit; - - /* If SYSTEM_GDBINIT lives in data-directory, and data-directory - has been provided, search for SYSTEM_GDBINIT there. */ - if (gdb_datadir_provided - && datadir_len < sys_gdbinit_len - && filename_ncmp (SYSTEM_GDBINIT, GDB_DATADIR, datadir_len) == 0 - && IS_DIR_SEPARATOR (SYSTEM_GDBINIT[datadir_len])) - { - /* Append the part of SYSTEM_GDBINIT that follows GDB_DATADIR - to gdb_datadir. */ - char *tmp_sys_gdbinit = xstrdup (&SYSTEM_GDBINIT[datadir_len]); - char *p; + size_t start = datadir_len; + for (; IS_DIR_SEPARATOR (file[start]); ++start) + ; + relocated_path = gdb_datadir + SLASH_STRING + file.substr (start); + } + else + { + relocated_path = relocate_path (gdb_program_name, file.c_str (), + relocatable); + } + return relocated_path; +} - for (p = tmp_sys_gdbinit; IS_DIR_SEPARATOR (*p); ++p) - continue; - relocated_sysgdbinit = concat (gdb_datadir, SLASH_STRING, p, - (char *) NULL); - xfree (tmp_sys_gdbinit); - } - else - { - relocated_sysgdbinit = relocate_path (gdb_program_name, - SYSTEM_GDBINIT, - SYSTEM_GDBINIT_RELOCATABLE); - } - if (relocated_sysgdbinit && stat (relocated_sysgdbinit, &s) == 0) - sysgdbinit = relocated_sysgdbinit; - else - xfree (relocated_sysgdbinit); - } +/* A class to wrap up the logic for finding the three different types of + initialisation files GDB uses, system wide, home directory, and current + working directory. */ + +class gdb_initfile_finder +{ +public: + /* Constructor. Finds initialisation files named FILENAME in the home + directory or local (current working) directory. System initialisation + files are found in both SYSTEM_FILENAME and SYSTEM_DIRNAME if these + are not nullptr (either or both can be). The matching *_RELOCATABLE + flag is passed through to RELOCATE_FILE_PATH_MAYBE_IN_DATADIR. + + If FILENAME starts with a '.' then when looking in the home directory + this first '.' can be ignored in some cases. */ + explicit gdb_initfile_finder (const char *filename, + const char *system_filename, + bool system_filename_relocatable, + const char *system_dirname, + bool system_dirname_relocatable, + bool lookup_local_file) + { + struct stat s; + + if (system_filename != nullptr && system_filename[0] != '\0') + { + std::string relocated_filename + = relocate_file_path_maybe_in_datadir (system_filename, + system_filename_relocatable); + if (!relocated_filename.empty () + && stat (relocated_filename.c_str (), &s) == 0) + m_system_files.push_back (relocated_filename); + } - homedir = getenv ("HOME"); + if (system_dirname != nullptr && system_dirname[0] != '\0') + { + std::string relocated_dirname + = relocate_file_path_maybe_in_datadir (system_dirname, + system_dirname_relocatable); + if (!relocated_dirname.empty ()) + { + gdb_dir_up dir (opendir (relocated_dirname.c_str ())); + if (dir != nullptr) + { + std::vector files; + while (true) + { + struct dirent *ent = readdir (dir.get ()); + if (ent == nullptr) + break; + std::string name (ent->d_name); + if (name == "." || name == "..") + continue; + /* ent->d_type is not available on all systems + (e.g. mingw, Solaris), so we have to call stat(). */ + std::string tmp_filename + = relocated_dirname + SLASH_STRING + name; + if (stat (tmp_filename.c_str (), &s) != 0 + || !S_ISREG (s.st_mode)) + continue; + const struct extension_language_defn *extlang + = get_ext_lang_of_file (tmp_filename.c_str ()); + /* We effectively don't support "set script-extension + off/soft", because we are loading system init files + here, so it does not really make sense to depend on + a setting. */ + if (extlang != nullptr && ext_lang_present_p (extlang)) + files.push_back (std::move (tmp_filename)); + } + std::sort (files.begin (), files.end ()); + m_system_files.insert (m_system_files.end (), + files.begin (), files.end ()); + } + } + } /* If the .gdbinit file in the current directory is the same as the $HOME/.gdbinit file, it should not be sourced. homebuf @@ -253,63 +307,157 @@ get_init_files (const char **system_gdbinit, are zero in case one of them fails (this guarantees that they won't match if either exists). */ - memset (&homebuf, 0, sizeof (struct stat)); - memset (&cwdbuf, 0, sizeof (struct stat)); + struct stat homebuf, cwdbuf; + memset (&homebuf, 0, sizeof (struct stat)); + memset (&cwdbuf, 0, sizeof (struct stat)); - if (homedir) - { - homeinit = xstrprintf ("%s/%s", homedir, gdbinit); - if (stat (homeinit, &homebuf) != 0) - { - xfree (homeinit); - homeinit = NULL; - } - } + m_home_file = find_gdb_home_config_file (filename, &homebuf); - if (stat (gdbinit, &cwdbuf) == 0) - { - if (!homeinit - || memcmp ((char *) &homebuf, (char *) &cwdbuf, - sizeof (struct stat))) - localinit = gdbinit; - } - - initialized = 1; - } + if (lookup_local_file && stat (filename, &cwdbuf) == 0) + { + if (m_home_file.empty () + || memcmp ((char *) &homebuf, (char *) &cwdbuf, + sizeof (struct stat))) + m_local_file = filename; + } + } + + DISABLE_COPY_AND_ASSIGN (gdb_initfile_finder); - *system_gdbinit = sysgdbinit; - *home_gdbinit = homeinit; - *local_gdbinit = localinit; + /* Return a list of system initialisation files. The list could be + empty. */ + const std::vector &system_files () const + { return m_system_files; } + + /* Return the path to the home initialisation file. The string can be + empty if there is no such file. */ + const std::string &home_file () const + { return m_home_file; } + + /* Return the path to the local initialisation file. The string can be + empty if there is no such file. */ + const std::string &local_file () const + { return m_local_file; } + +private: + + /* Vector of all system init files in the order they should be processed. + Could be empty. */ + std::vector m_system_files; + + /* Initialization file from the home directory. Could be the empty + string if there is no such file found. */ + std::string m_home_file; + + /* Initialization file from the current working directory. Could be the + empty string if there is no such file found. */ + std::string m_local_file; +}; + +/* Compute the locations of init files that GDB should source and return + them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. The SYSTEM_GDBINIT + can be returned as an empty vector, and HOME_GDBINIT and LOCAL_GDBINIT + can be returned as empty strings if there is no init file of that + type. */ + +static void +get_init_files (std::vector *system_gdbinit, + std::string *home_gdbinit, + std::string *local_gdbinit) +{ + /* Cache the file lookup object so we only actually search for the files + once. */ + static gdb::optional init_files; + if (!init_files.has_value ()) + init_files.emplace (GDBINIT, SYSTEM_GDBINIT, SYSTEM_GDBINIT_RELOCATABLE, + SYSTEM_GDBINIT_DIR, SYSTEM_GDBINIT_DIR_RELOCATABLE, + true); + + *system_gdbinit = init_files->system_files (); + *home_gdbinit = init_files->home_file (); + *local_gdbinit = init_files->local_file (); +} + +/* Compute the location of the early init file GDB should source and return + it in HOME_GDBEARLYINIT. HOME_GDBEARLYINIT could be returned as an + empty string if there is no early init file found. */ + +static void +get_earlyinit_files (std::string *home_gdbearlyinit) +{ + /* Cache the file lookup object so we only actually search for the files + once. */ + static gdb::optional init_files; + if (!init_files.has_value ()) + init_files.emplace (GDBEARLYINIT, nullptr, false, nullptr, false, false); + + *home_gdbearlyinit = init_files->home_file (); } -/* Try to set up an alternate signal stack for SIGSEGV handlers. - This allows us to handle SIGSEGV signals generated when the - normal process stack is exhausted. If this stack is not set - up (sigaltstack is unavailable or fails) and a SIGSEGV is - generated when the normal stack is exhausted then the program - will behave as though no SIGSEGV handler was installed. */ +/* Start up the event loop. This is the entry point to the event loop + from the command loop. */ static void -setup_alternate_signal_stack (void) +start_event_loop () { -#ifdef HAVE_SIGALTSTACK - stack_t ss; + /* Loop until there is nothing to do. This is the entry point to + the event loop engine. gdb_do_one_event will process one event + for each invocation. It blocks waiting for an event and then + processes it. */ + while (1) + { + int result = 0; - /* FreeBSD versions older than 11.0 use char * for ss_sp instead of - void *. This cast works with both types. */ - ss.ss_sp = (char *) xmalloc (SIGSTKSZ); - ss.ss_size = SIGSTKSZ; - ss.ss_flags = 0; + try + { + result = gdb_do_one_event (); + } + catch (const gdb_exception &ex) + { + exception_print (gdb_stderr, ex); - sigaltstack(&ss, NULL); -#endif + /* If any exception escaped to here, we better enable + stdin. Otherwise, any command that calls async_disable_stdin, + and then throws, will leave stdin inoperable. */ + SWITCH_THRU_ALL_UIS () + { + async_enable_stdin (); + } + /* If we long-jumped out of do_one_event, we probably didn't + get around to resetting the prompt, which leaves readline + in a messed-up state. Reset it here. */ + current_ui->prompt_state = PROMPT_NEEDED; + gdb::observers::command_error.notify (); + /* This call looks bizarre, but it is required. If the user + entered a command that caused an error, + after_char_processing_hook won't be called from + rl_callback_read_char_wrapper. Using a cleanup there + won't work, since we want this function to be called + after a new prompt is printed. */ + if (after_char_processing_hook) + (*after_char_processing_hook) (); + /* Maybe better to set a flag to be checked somewhere as to + whether display the prompt or not. */ + } + + if (result < 0) + break; + } + + /* We are done with the event loop. There are no more event sources + to listen to. So we exit GDB. */ + return; } -/* Call command_loop. If it happens to return, pass that through as a - non-zero return status. */ +/* Call command_loop. */ -static int -captured_command_loop (void *data) +/* Prevent inlining this function for the benefit of GDB's selftests + in the testsuite. Those tests want to run GDB under GDB and stop + here. */ +static void captured_command_loop () __attribute__((noinline)); + +static void +captured_command_loop () { struct ui *ui = current_ui; @@ -324,26 +472,16 @@ captured_command_loop (void *data) /* Now it's time to start the event loop. */ start_event_loop (); - /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton - would clean things up (restoring the cleanup chain) to the state - they were just prior to the call. Technically, this means that - the do_cleanups() below is redundant. Unfortunately, many FUNCs - are not that well behaved. do_cleanups should either be replaced - with a do_cleanups call (to cover the problem) or an assertion - check to detect bad FUNCs code. */ - do_cleanups (all_cleanups ()); /* If the command_loop returned, normally (rather than threw an - error) we try to quit. If the quit is aborted, catch_errors() - which called this catch the signal and restart the command - loop. */ + error) we try to quit. If the quit is aborted, our caller + catches the signal and restarts the command loop. */ quit_command (NULL, ui->instream == ui->stdin_stream); - return 1; } /* Handle command errors thrown from within catch_command_errors. */ static int -handle_command_errors (struct gdb_exception e) +handle_command_errors (const struct gdb_exception &e) { if (e.reason < 0) { @@ -358,57 +496,34 @@ handle_command_errors (struct gdb_exception e) return 1; } -/* Type of the command callback passed to catch_command_errors. */ - -typedef void (catch_command_errors_ftype) (char *, int); - -/* Wrap calls to commands run before the event loop is started. */ - -static int -catch_command_errors (catch_command_errors_ftype *command, - char *arg, int from_tty) -{ - TRY - { - int was_sync = current_ui->prompt_state == PROMPT_BLOCKED; - - command (arg, from_tty); - - maybe_wait_sync_command_done (was_sync); - } - CATCH (e, RETURN_MASK_ALL) - { - return handle_command_errors (e); - } - END_CATCH - - return 1; -} - /* Type of the command callback passed to the const catch_command_errors. */ typedef void (catch_command_errors_const_ftype) (const char *, int); -/* Const-correct catch_command_errors. */ +/* Wrap calls to commands run before the event loop is started. */ static int catch_command_errors (catch_command_errors_const_ftype command, - const char *arg, int from_tty) + const char *arg, int from_tty, + bool do_bp_actions = false) { - TRY + try { int was_sync = current_ui->prompt_state == PROMPT_BLOCKED; command (arg, from_tty); maybe_wait_sync_command_done (was_sync); + + /* Do any commands attached to breakpoint we stopped at. */ + if (do_bp_actions) + bpstat_do_actions (); } - CATCH (e, RETURN_MASK_ALL) + catch (const gdb_exception &e) { return handle_command_errors (e); } - END_CATCH return 1; } @@ -427,6 +542,19 @@ symbol_file_add_main_adapter (const char *arg, int from_tty) symbol_file_add_main (arg, add_flags); } +/* Perform validation of the '--readnow' and '--readnever' flags. */ + +static void +validate_readnow_readnever () +{ + if (readnever_symbol_files && readnow_symbol_files) + { + error (_("%s: '--readnow' and '--readnever' cannot be " + "specified simultaneously"), + gdb_program_name); + } +} + /* Type of this option. */ enum cmdarg_kind { @@ -438,9 +566,15 @@ enum cmdarg_kind /* Option type -ix. */ CMDARG_INIT_FILE, - + /* Option type -iex. */ - CMDARG_INIT_COMMAND + CMDARG_INIT_COMMAND, + + /* Option type -eix. */ + CMDARG_EARLYINIT_FILE, + + /* Option type -eiex. */ + CMDARG_EARLYINIT_COMMAND }; /* Arguments of --command option and its counterpart. */ @@ -458,6 +592,26 @@ struct cmdarg char *string; }; +/* From CMDARG_VEC execute command files (matching FILE_TYPE) or commands + (matching CMD_TYPE). Update the value in *RET if and scripts or + commands are executed. */ + +static void +execute_cmdargs (const std::vector *cmdarg_vec, + cmdarg_kind file_type, cmdarg_kind cmd_type, + int *ret) +{ + for (const auto &cmdarg_p : *cmdarg_vec) + { + if (cmdarg_p.type == file_type) + *ret = catch_command_errors (source_script, cmdarg_p.string, + !batch_flag); + else if (cmdarg_p.type == cmd_type) + *ret = catch_command_errors (execute_command, cmdarg_p.string, + !batch_flag, true); + } +} + static void captured_main_1 (struct captured_main_args *context) { @@ -489,16 +643,11 @@ captured_main_1 (struct captured_main_args *context) /* All arguments of --directory option. */ std::vector dirarg; - /* gdb init files. */ - const char *system_gdbinit; - const char *home_gdbinit; - const char *local_gdbinit; - int i; int save_auto_load; - struct objfile *objfile; + int ret = 1; -#ifdef HAVE_SBRK +#ifdef HAVE_USEFUL_SBRK /* Set this before constructing scoped_command_stats. */ lim_at_start = (char *) sbrk (0); #endif @@ -516,11 +665,7 @@ captured_main_1 (struct captured_main_args *context) textdomain (PACKAGE); #endif - bfd_init (); notice_open_fds (); - save_original_signals_state (); - - saved_command_line = (char *) xstrdup (""); #ifdef __MINGW32__ /* Ensure stderr is unbuffered. A Cygwin pty or pipe is implemented @@ -528,12 +673,17 @@ captured_main_1 (struct captured_main_args *context) setvbuf (stderr, NULL, _IONBF, BUFSIZ); #endif + /* Note: `error' cannot be called before this point, because the + caller will crash when trying to print the exception. */ main_ui = new ui (stdin, stdout, stderr); current_ui = main_ui; gdb_stdtargerr = gdb_stderr; /* for moment */ gdb_stdtargin = gdb_stdin; /* for moment */ + if (bfd_init () != BFD_INIT_MAGIC) + error (_("fatal error: libbfd ABI mismatch")); + #ifdef __MINGW32__ /* On Windows, argv[0] is not necessarily set to absolute form when GDB is found along PATH, without which relocation doesn't work. */ @@ -544,7 +694,7 @@ captured_main_1 (struct captured_main_args *context) /* Prefix warning messages with the command name. */ gdb::unique_xmalloc_ptr tmp_warn_preprint - (xstrprintf ("%s: warning: ", gdb_program_name)); + = xstrprintf ("%s: warning: ", gdb_program_name); warning_pre_print = tmp_warn_preprint.get (); current_directory = getcwd (NULL, 0); @@ -555,26 +705,18 @@ captured_main_1 (struct captured_main_args *context) gdb_sysroot = relocate_gdb_directory (TARGET_SYSTEM_ROOT, TARGET_SYSTEM_ROOT_RELOCATABLE); - if (gdb_sysroot == NULL || *gdb_sysroot == '\0') - { - xfree (gdb_sysroot); - gdb_sysroot = xstrdup (TARGET_SYSROOT_PREFIX); - } + if (gdb_sysroot.empty ()) + gdb_sysroot = TARGET_SYSROOT_PREFIX; - debug_file_directory = relocate_gdb_directory (DEBUGDIR, - DEBUGDIR_RELOCATABLE); + debug_file_directory + = relocate_gdb_directory (DEBUGDIR, DEBUGDIR_RELOCATABLE); gdb_datadir = relocate_gdb_directory (GDB_DATADIR, GDB_DATADIR_RELOCATABLE); -#ifdef WITH_PYTHON_PATH - { - /* For later use in helping Python find itself. */ - char *tmp = concat (WITH_PYTHON_PATH, SLASH_STRING, "lib", (char *) NULL); - - python_libdir = relocate_gdb_directory (tmp, PYTHON_PATH_RELOCATABLE); - xfree (tmp); - } +#ifdef WITH_PYTHON_LIBDIR + python_libdir = relocate_gdb_directory (WITH_PYTHON_LIBDIR, + PYTHON_LIBDIR_RELOCATABLE); #endif #ifdef RELOC_SRCDIR @@ -604,14 +746,21 @@ captured_main_1 (struct captured_main_args *context) OPT_NOWINDOWS, OPT_WINDOWS, OPT_IX, - OPT_IEX + OPT_IEX, + OPT_EIX, + OPT_EIEX, + OPT_READNOW, + OPT_READNEVER }; + /* This struct requires int* in the struct, but write_files is a bool. + So use this temporary int that we write back after argument parsing. */ + int write_files_1 = 0; static struct option long_options[] = { {"tui", no_argument, 0, OPT_TUI}, - {"dbx", no_argument, &dbx_commands, 1}, - {"readnow", no_argument, &readnow_symbol_files, 1}, - {"r", no_argument, &readnow_symbol_files, 1}, + {"readnow", no_argument, NULL, OPT_READNOW}, + {"readnever", no_argument, NULL, OPT_READNEVER}, + {"r", no_argument, NULL, OPT_READNOW}, {"quiet", no_argument, &quiet, 1}, {"q", no_argument, &quiet, 1}, {"silent", no_argument, &quiet, 1}, @@ -648,6 +797,10 @@ captured_main_1 (struct captured_main_args *context) {"init-eval-command", required_argument, 0, OPT_IEX}, {"ix", required_argument, 0, OPT_IX}, {"iex", required_argument, 0, OPT_IEX}, + {"early-init-command", required_argument, 0, OPT_EIX}, + {"early-init-eval-command", required_argument, 0, OPT_EIEX}, + {"eix", required_argument, 0, OPT_EIX}, + {"eiex", required_argument, 0, OPT_EIEX}, #ifdef GDBTK {"tclcommand", required_argument, 0, 'z'}, {"enable-external-editor", no_argument, 0, 'y'}, @@ -669,7 +822,7 @@ captured_main_1 (struct captured_main_args *context) {"w", no_argument, NULL, OPT_WINDOWS}, {"windows", no_argument, NULL, OPT_WINDOWS}, {"statistics", no_argument, 0, OPT_STATISTICS}, - {"write", no_argument, &write_files, 1}, + {"write", no_argument, &write_files_1, 1}, {"args", no_argument, &set_args, 1}, {"l", required_argument, 0, 'l'}, {"return-child-result", no_argument, &return_child_result, 1}, @@ -721,7 +874,7 @@ captured_main_1 (struct captured_main_args *context) break; case OPT_WINDOWS: /* FIXME: cagney/2003-03-01: Not sure if this option is - actually useful, and if it is, what it should do. */ + actually useful, and if it is, what it should do. */ #ifdef GDBTK /* --windows is equivalent to -i=insight. */ xfree (interpreter_p); @@ -760,6 +913,12 @@ captured_main_1 (struct captured_main_args *context) case OPT_IEX: cmdarg_vec.emplace_back (CMDARG_INIT_COMMAND, optarg); break; + case OPT_EIX: + cmdarg_vec.emplace_back (CMDARG_EARLYINIT_FILE, optarg); + break; + case OPT_EIEX: + cmdarg_vec.emplace_back (CMDARG_EARLYINIT_COMMAND, optarg); + break; case 'B': batch_flag = batch_silent = 1; gdb_stdout = new null_file (); @@ -774,8 +933,6 @@ captured_main_1 (struct captured_main_args *context) #ifdef GDBTK case 'z': { - extern int gdbtk_test (char *); - if (!gdbtk_test (optarg)) error (_("%s: unable to load tclcommand file \"%s\""), gdb_program_name, optarg); @@ -788,8 +945,6 @@ captured_main_1 (struct captured_main_args *context) { /* Set the external editor commands when gdb is farming out files to be edited by another program. */ - extern char *external_editor_command; - external_editor_command = xstrdup (optarg); break; } @@ -809,28 +964,42 @@ captured_main_1 (struct captured_main_args *context) break; case 'b': { - int i; + int rate; char *p; - i = strtol (optarg, &p, 0); - if (i == 0 && p == optarg) + rate = strtol (optarg, &p, 0); + if (rate == 0 && p == optarg) warning (_("could not set baud rate to `%s'."), optarg); else - baud_rate = i; + baud_rate = rate; } - break; + break; case 'l': { - int i; + int timeout; char *p; - i = strtol (optarg, &p, 0); - if (i == 0 && p == optarg) + timeout = strtol (optarg, &p, 0); + if (timeout == 0 && p == optarg) warning (_("could not set timeout limit to `%s'."), optarg); else - remote_timeout = i; + remote_timeout = timeout; + } + break; + + case OPT_READNOW: + { + readnow_symbol_files = 1; + validate_readnow_readnever (); + } + break; + + case OPT_READNEVER: + { + readnever_symbol_files = 1; + validate_readnow_readnever (); } break; @@ -839,16 +1008,44 @@ captured_main_1 (struct captured_main_args *context) gdb_program_name); } } + write_files = (write_files_1 != 0); if (batch_flag) - quiet = 1; + { + quiet = 1; + + /* Disable all output styling when running in batch mode. */ + cli_styling = 0; + } } + save_original_signals_state (quiet); + /* Try to set up an alternate signal stack for SIGSEGV handlers. */ - setup_alternate_signal_stack (); + gdb::alternate_signal_stack signal_stack; /* Initialize all files. */ - gdb_init (gdb_program_name); + gdb_init (); + + /* Process early init files and early init options from the command line. */ + if (!inhibit_gdbinit) + { + std::string home_gdbearlyinit; + get_earlyinit_files (&home_gdbearlyinit); + if (!home_gdbearlyinit.empty () && !inhibit_home_gdbinit) + ret = catch_command_errors (source_script, + home_gdbearlyinit.c_str (), 0); + } + execute_cmdargs (&cmdarg_vec, CMDARG_EARLYINIT_FILE, + CMDARG_EARLYINIT_COMMAND, &ret); + + /* Initialize the extension languages. */ + ext_lang_initialization (); + + /* Recheck if we're starting up quietly after processing the startup + scripts and commands. */ + if (!quiet) + quiet = check_quiet_mode (); /* Now that gdb_init has created the initial inferior, we're in position to set args for that inferior. */ @@ -892,16 +1089,19 @@ captured_main_1 (struct captured_main_args *context) /* Any argument left on the command line is unexpected and will be ignored. Inform the user. */ if (optind < argc) - fprintf_unfiltered (gdb_stderr, - _("Excess command line " - "arguments ignored. (%s%s)\n"), - argv[optind], - (optind == argc - 1) ? "" : " ..."); + gdb_printf (gdb_stderr, + _("Excess command line " + "arguments ignored. (%s%s)\n"), + argv[optind], + (optind == argc - 1) ? "" : " ..."); } /* Lookup gdbinit files. Note that the gdbinit file name may be - overriden during file initialization, so get_init_files should be + overridden during file initialization, so get_init_files should be called after gdb_init. */ + std::vector system_gdbinit; + std::string home_gdbinit; + std::string local_gdbinit; get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit); /* Do these (and anything which might call wrap_here or *_filtered) @@ -911,24 +1111,21 @@ captured_main_1 (struct captured_main_args *context) if (print_version) { - print_gdb_version (gdb_stdout); - wrap_here (""); - printf_filtered ("\n"); + print_gdb_version (gdb_stdout, false); + gdb_printf ("\n"); exit (0); } if (print_help) { print_gdb_help (gdb_stdout); - fputs_unfiltered ("\n", gdb_stdout); exit (0); } if (print_configuration) { print_gdb_configuration (gdb_stdout); - wrap_here (""); - printf_filtered ("\n"); + gdb_printf ("\n"); exit (0); } @@ -939,12 +1136,11 @@ captured_main_1 (struct captured_main_args *context) if (!quiet && strcmp (interpreter_p, INTERP_MI1) == 0) { /* Print all the junk at the top, with trailing "..." if we are - about to read a symbol file (possibly slowly). */ - print_gdb_version (gdb_stdout); + about to read a symbol file (possibly slowly). */ + print_gdb_version (gdb_stdout, true); if (symarg) - printf_filtered (".."); - wrap_here (""); - printf_filtered ("\n"); + gdb_printf (".."); + gdb_printf ("\n"); gdb_flush (gdb_stdout); /* Force to screen during slow operations. */ } @@ -960,12 +1156,11 @@ captured_main_1 (struct captured_main_args *context) if (!quiet && !current_interp_named_p (INTERP_MI1)) { /* Print all the junk at the top, with trailing "..." if we are - about to read a symbol file (possibly slowly). */ - print_gdb_version (gdb_stdout); + about to read a symbol file (possibly slowly). */ + print_gdb_version (gdb_stdout, true); if (symarg) - printf_filtered (".."); - wrap_here (""); - printf_filtered ("\n"); + gdb_printf (".."); + gdb_printf ("\n"); gdb_flush (gdb_stdout); /* Force to screen during slow operations. */ } @@ -978,43 +1173,31 @@ captured_main_1 (struct captured_main_args *context) This is done *before* all the command line arguments are processed; it sets global parameters, which are independent of what file you are debugging or what directory you are in. */ - if (system_gdbinit && !inhibit_gdbinit) - catch_command_errors (source_script, system_gdbinit, 0); + if (!system_gdbinit.empty () && !inhibit_gdbinit) + { + for (const std::string &file : system_gdbinit) + ret = catch_command_errors (source_script, file.c_str (), 0); + } /* Read and execute $HOME/.gdbinit file, if it exists. This is done *before* all the command line arguments are processed; it sets global parameters, which are independent of what file you are debugging or what directory you are in. */ - if (home_gdbinit && !inhibit_gdbinit && !inhibit_home_gdbinit) - catch_command_errors (source_script, home_gdbinit, 0); + if (!home_gdbinit.empty () && !inhibit_gdbinit && !inhibit_home_gdbinit) + ret = catch_command_errors (source_script, home_gdbinit.c_str (), 0); /* Process '-ix' and '-iex' options early. */ - for (i = 0; i < cmdarg_vec.size (); i++) - { - const struct cmdarg &cmdarg_p = cmdarg_vec[i]; - - switch (cmdarg_p.type) - { - case CMDARG_INIT_FILE: - catch_command_errors (source_script, cmdarg_p.string, - !batch_flag); - break; - case CMDARG_INIT_COMMAND: - catch_command_errors (execute_command, cmdarg_p.string, - !batch_flag); - break; - } - } + execute_cmdargs (&cmdarg_vec, CMDARG_INIT_FILE, CMDARG_INIT_COMMAND, &ret); /* Now perform all the actions indicated by the arguments. */ if (cdarg != NULL) { - catch_command_errors (cd_command, cdarg, 0); + ret = catch_command_errors (cd_command, cdarg, 0); } for (i = 0; i < dirarg.size (); i++) - catch_command_errors (directory_switch, dirarg[i], 0); + ret = catch_command_errors (directory_switch, dirarg[i], 0); /* Skip auto-loading section-specified scripts until we've sourced local_gdbinit (which is often used to augment the source search @@ -1027,21 +1210,22 @@ captured_main_1 (struct captured_main_args *context) && strcmp (execarg, symarg) == 0) { /* The exec file and the symbol-file are the same. If we can't - open it, better only print one error message. - catch_command_errors returns non-zero on success! */ - if (catch_command_errors (exec_file_attach, execarg, - !batch_flag)) - catch_command_errors (symbol_file_add_main_adapter, symarg, - !batch_flag); + open it, better only print one error message. + catch_command_errors returns non-zero on success! */ + ret = catch_command_errors (exec_file_attach, execarg, + !batch_flag); + if (ret != 0) + ret = catch_command_errors (symbol_file_add_main_adapter, + symarg, !batch_flag); } else { if (execarg != NULL) - catch_command_errors (exec_file_attach, execarg, - !batch_flag); + ret = catch_command_errors (exec_file_attach, execarg, + !batch_flag); if (symarg != NULL) - catch_command_errors (symbol_file_add_main_adapter, symarg, - !batch_flag); + ret = catch_command_errors (symbol_file_add_main_adapter, + symarg, !batch_flag); } if (corearg && pidarg) @@ -1049,9 +1233,14 @@ captured_main_1 (struct captured_main_args *context) "a core file at the same time.")); if (corearg != NULL) - catch_command_errors (core_file_command, corearg, !batch_flag); + { + ret = catch_command_errors (core_file_command, corearg, + !batch_flag); + } else if (pidarg != NULL) - catch_command_errors (attach_command, pidarg, !batch_flag); + { + ret = catch_command_errors (attach_command, pidarg, !batch_flag); + } else if (pid_or_core_arg) { /* The user specified 'gdb program pid' or gdb program core'. @@ -1060,38 +1249,46 @@ captured_main_1 (struct captured_main_args *context) if (isdigit (pid_or_core_arg[0])) { - if (catch_command_errors (attach_command, pid_or_core_arg, - !batch_flag) == 0) - catch_command_errors (core_file_command, pid_or_core_arg, - !batch_flag); + ret = catch_command_errors (attach_command, pid_or_core_arg, + !batch_flag); + if (ret == 0) + ret = catch_command_errors (core_file_command, + pid_or_core_arg, + !batch_flag); + } + else + { + /* Can't be a pid, better be a corefile. */ + ret = catch_command_errors (core_file_command, + pid_or_core_arg, + !batch_flag); } - else /* Can't be a pid, better be a corefile. */ - catch_command_errors (core_file_command, pid_or_core_arg, - !batch_flag); } if (ttyarg != NULL) - set_inferior_io_terminal (ttyarg); + current_inferior ()->set_tty (ttyarg); /* Error messages should no longer be distinguished with extra output. */ warning_pre_print = _("warning: "); /* Read the .gdbinit file in the current directory, *if* it isn't the same as the $HOME/.gdbinit file (it should exist, also). */ - if (local_gdbinit) + if (!local_gdbinit.empty ()) { auto_load_local_gdbinit_pathname - = gdb_realpath (local_gdbinit).release (); + = gdb_realpath (local_gdbinit.c_str ()).release (); - if (!inhibit_gdbinit && auto_load_local_gdbinit - && file_is_auto_load_safe (local_gdbinit, - _("auto-load: Loading .gdbinit " - "file \"%s\".\n"), - local_gdbinit)) + if (!inhibit_gdbinit && auto_load_local_gdbinit) { - auto_load_local_gdbinit_loaded = 1; + auto_load_debug_printf ("Loading .gdbinit file \"%s\".", + local_gdbinit.c_str ()); - catch_command_errors (source_script, local_gdbinit, 0); + if (file_is_auto_load_safe (local_gdbinit.c_str ())) + { + auto_load_local_gdbinit_loaded = 1; + + ret = catch_command_errors (source_script, local_gdbinit.c_str (), 0); + } } } @@ -1100,26 +1297,11 @@ captured_main_1 (struct captured_main_args *context) We wait until now because it is common to add to the source search path in local_gdbinit. */ global_auto_load = save_auto_load; - ALL_OBJFILES (objfile) + for (objfile *objfile : current_program_space->objfiles ()) load_auto_scripts_for_objfile (objfile); /* Process '-x' and '-ex' options. */ - for (i = 0; i < cmdarg_vec.size (); i++) - { - const struct cmdarg &cmdarg_p = cmdarg_vec[i]; - - switch (cmdarg_p.type) - { - case CMDARG_FILE: - catch_command_errors (source_script, cmdarg_p.string, - !batch_flag); - break; - case CMDARG_COMMAND: - catch_command_errors (execute_command, cmdarg_p.string, - !batch_flag); - break; - } - } + execute_cmdargs (&cmdarg_vec, CMDARG_FILE, CMDARG_COMMAND, &ret); /* Read in the old history after all the command files have been read. */ @@ -1127,8 +1309,11 @@ captured_main_1 (struct captured_main_args *context) if (batch_flag) { + int error_status = EXIT_FAILURE; + int *exit_arg = ret == 0 ? &error_status : NULL; + /* We have hit the end of the batch file. */ - quit_force (NULL, 0); + quit_force (exit_arg, 0); } } @@ -1145,7 +1330,14 @@ captured_main (void *data) change - SET_TOP_LEVEL() - has been eliminated. */ while (1) { - catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL); + try + { + captured_command_loop (); + } + catch (const gdb_exception &ex) + { + exception_print (gdb_stderr, ex); + } } /* No exit -- exit is through quit_command. */ } @@ -1153,15 +1345,14 @@ captured_main (void *data) int gdb_main (struct captured_main_args *args) { - TRY + try { captured_main (args); } - CATCH (ex, RETURN_MASK_ALL) + catch (const gdb_exception &ex) { exception_print (gdb_stderr, ex); } - END_CATCH /* The only way to end up here is by an error (normal exit is handled by quit_force()), hence always return an error status. */ @@ -1176,23 +1367,25 @@ gdb_main (struct captured_main_args *args) static void print_gdb_help (struct ui_file *stream) { - const char *system_gdbinit; - const char *home_gdbinit; - const char *local_gdbinit; + std::vector system_gdbinit; + std::string home_gdbinit; + std::string local_gdbinit; + std::string home_gdbearlyinit; get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit); + get_earlyinit_files (&home_gdbearlyinit); /* Note: The options in the list below are only approximately sorted in the alphabetical order, so as to group closely related options together. */ - fputs_unfiltered (_("\ + gdb_puts (_("\ This is the GNU debugger. Usage:\n\n\ gdb [options] [executable-file [core-file or process-id]]\n\ gdb [options] --args executable-file [inferior-arguments ...]\n\n\ "), stream); - fputs_unfiltered (_("\ + gdb_puts (_("\ Selection of debuggee and its files:\n\n\ - --args Arguments after executable-file are passed to inferior\n\ + --args Arguments after executable-file are passed to inferior.\n\ --core=COREFILE Analyze the core dump COREFILE.\n\ --exec=EXECFILE Use EXECFILE as the executable.\n\ --pid=PID Attach to running process PID.\n\ @@ -1200,47 +1393,47 @@ Selection of debuggee and its files:\n\n\ --se=FILE Use FILE as symbol file and executable file.\n\ --symbols=SYMFILE Read symbols from SYMFILE.\n\ --readnow Fully read symbol files on first access.\n\ + --readnever Do not read symbol files.\n\ --write Set writing into executable and core files.\n\n\ "), stream); - fputs_unfiltered (_("\ + gdb_puts (_("\ Initial commands and command files:\n\n\ --command=FILE, -x Execute GDB commands from FILE.\n\ --init-command=FILE, -ix\n\ - Like -x but execute commands before loading inferior.\n\ + Like -x but execute commands before loading inferior.\n\ --eval-command=COMMAND, -ex\n\ - Execute a single GDB command.\n\ - May be used multiple times and in conjunction\n\ - with --command.\n\ + Execute a single GDB command.\n\ + May be used multiple times and in conjunction\n\ + with --command.\n\ --init-eval-command=COMMAND, -iex\n\ - Like -ex but before loading inferior.\n\ + Like -ex but before loading inferior.\n\ --nh Do not read ~/.gdbinit.\n\ --nx Do not read any .gdbinit files in any directory.\n\n\ "), stream); - fputs_unfiltered (_("\ + gdb_puts (_("\ Output and user interface control:\n\n\ --fullname Output information used by emacs-GDB interface.\n\ --interpreter=INTERP\n\ - Select a specific interpreter / user interface\n\ + Select a specific interpreter / user interface.\n\ --tty=TTY Use TTY for input/output by the program being debugged.\n\ -w Use the GUI interface.\n\ --nw Do not use the GUI interface.\n\ "), stream); #if defined(TUI) - fputs_unfiltered (_("\ + gdb_puts (_("\ --tui Use a terminal user interface.\n\ "), stream); #endif - fputs_unfiltered (_("\ - --dbx DBX compatibility mode.\n\ + gdb_puts (_("\ -q, --quiet, --silent\n\ - Do not print version number on startup.\n\n\ + Do not print version number on startup.\n\n\ "), stream); - fputs_unfiltered (_("\ + gdb_puts (_("\ Operating modes:\n\n\ --batch Exit after processing options.\n\ --batch-silent Like --batch, but suppress all gdb stdout output.\n\ --return-child-result\n\ - GDB exit code will be the child's exit code.\n\ + GDB exit code will be the child's exit code.\n\ --configuration Print details about GDB configuration and then exit.\n\ --help Print this message and then exit.\n\ --version Print version information and then exit.\n\n\ @@ -1250,29 +1443,57 @@ Remote debugging options:\n\n\ Other options:\n\n\ --cd=DIR Change current directory to DIR.\n\ --data-directory=DIR, -D\n\ - Set GDB's data-directory to DIR.\n\ + Set GDB's data-directory to DIR.\n\ "), stream); - fputs_unfiltered (_("\n\ + gdb_puts (_("\n\ +At startup, GDB reads the following early init files and executes their\n\ +commands:\n\ +"), stream); + if (!home_gdbearlyinit.empty ()) + gdb_printf (stream, _("\ + * user-specific early init file: %s\n\ +"), home_gdbearlyinit.c_str ()); + if (home_gdbearlyinit.empty ()) + gdb_printf (stream, _("\ + None found.\n")); + gdb_puts (_("\n\ At startup, GDB reads the following init files and executes their commands:\n\ "), stream); - if (system_gdbinit) - fprintf_unfiltered (stream, _("\ - * system-wide init file: %s\n\ -"), system_gdbinit); - if (home_gdbinit) - fprintf_unfiltered (stream, _("\ + if (!system_gdbinit.empty ()) + { + std::string output; + for (size_t idx = 0; idx < system_gdbinit.size (); ++idx) + { + output += system_gdbinit[idx]; + if (idx < system_gdbinit.size () - 1) + output += ", "; + } + gdb_printf (stream, _("\ + * system-wide init files: %s\n\ +"), output.c_str ()); + } + if (!home_gdbinit.empty ()) + gdb_printf (stream, _("\ * user-specific init file: %s\n\ -"), home_gdbinit); - if (local_gdbinit) - fprintf_unfiltered (stream, _("\ +"), home_gdbinit.c_str ()); + if (!local_gdbinit.empty ()) + gdb_printf (stream, _("\ * local init file (see also 'set auto-load local-gdbinit'): ./%s\n\ -"), local_gdbinit); - fputs_unfiltered (_("\n\ +"), local_gdbinit.c_str ()); + if (system_gdbinit.empty () && home_gdbinit.empty () + && local_gdbinit.empty ()) + gdb_printf (stream, _("\ + None found.\n")); + gdb_puts (_("\n\ For more information, type \"help\" from within GDB, or consult the\n\ GDB manual (available as on-line info or a printed manual).\n\ "), stream); if (REPORT_BUGS_TO[0] && stream == gdb_stdout) - fprintf_unfiltered (stream, _("\ -Report bugs to \"%s\".\n\ -"), REPORT_BUGS_TO); + gdb_printf (stream, _("\n\ +Report bugs to %ps.\n\ +"), styled_string (file_name_style.style (), REPORT_BUGS_TO)); + if (stream == gdb_stdout) + gdb_printf (stream, _("\n\ +You can ask GDB-related questions on the GDB users mailing list\n\ +(gdb@sourceware.org) or on GDB's IRC channel (#gdb on Freenode).\n")); }