void core_file_command (const char *filename, int from_tty) { dont_repeat (); /* Either way, seems bogus. */ if (filename == NULL) { if (core_bfd != NULL) { target_detach (current_inferior (), from_tty); gdb_assert (core_bfd == NULL); } else maybe_say_no_core_file_now (from_tty); } else core_target_open (filename, from_tty); }
int child_follow_fork (int follow_child) { ptid_t last_ptid; struct target_waitstatus last_status; int has_vforked; int parent_pid, child_pid; get_last_target_status (&last_ptid, &last_status); has_vforked = (last_status.kind == TARGET_WAITKIND_VFORKED); parent_pid = ptid_get_pid (last_ptid); child_pid = last_status.value.related_pid; /* At this point, if we are vforking, breakpoints were already detached from the child in child_wait; and the child has already called execve(). If we are forking, both the parent and child have breakpoints inserted. */ if (! follow_child) { if (! has_vforked) { detach_breakpoints (child_pid); #ifdef SOLIB_REMOVE_INFERIOR_HOOK SOLIB_REMOVE_INFERIOR_HOOK (child_pid); #endif } /* Detach from the child. */ printf_unfiltered ("Detaching after fork from %s\n", target_pid_to_str (pid_to_ptid (child_pid))); hppa_require_detach (child_pid, 0); /* The parent and child of a vfork share the same address space. Also, on some targets the order in which vfork and exec events are received for parent in child requires some delicate handling of the events. For instance, on ptrace-based HPUX we receive the child's vfork event first, at which time the parent has been suspended by the OS and is essentially untouchable until the child's exit or second exec event arrives. At that time, the parent's vfork event is delivered to us, and that's when we see and decide how to follow the vfork. But to get to that point, we must continue the child until it execs or exits. To do that smoothly, all breakpoints must be removed from the child, in case there are any set between the vfork() and exec() calls. But removing them from the child also removes them from the parent, due to the shared-address-space nature of a vfork'd parent and child. On HPUX, therefore, we must take care to restore the bp's to the parent before we continue it. Else, it's likely that we may not stop in the expected place. (The worst scenario is when the user tries to step over a vfork() call; the step-resume bp must be restored for the step to properly stop in the parent after the call completes!) Sequence of events, as reported to gdb from HPUX: Parent Child Action for gdb to take ------------------------------------------------------- 1 VFORK Continue child 2 EXEC 3 EXEC or EXIT 4 VFORK Now that the child has safely exec'd or exited, we must restore the parent's breakpoints before we continue it. Else, we may cause it run past expected stopping points. */ if (has_vforked) reattach_breakpoints (parent_pid); } else { /* Needed to keep the breakpoint lists in sync. */ if (! has_vforked) detach_breakpoints (child_pid); /* Before detaching from the parent, remove all breakpoints from it. */ remove_breakpoints (); /* Also reset the solib inferior hook from the parent. */ #ifdef SOLIB_REMOVE_INFERIOR_HOOK SOLIB_REMOVE_INFERIOR_HOOK (PIDGET (inferior_ptid)); #endif /* Detach from the parent. */ target_detach (NULL, 1); /* Attach to the child. */ printf_unfiltered ("Attaching after fork to %s\n", target_pid_to_str (pid_to_ptid (child_pid))); hppa_require_attach (child_pid); inferior_ptid = pid_to_ptid (child_pid); /* If we vforked, then we've also execed by now. The exec will be reported momentarily. follow_exec () will handle breakpoints, so we don't have to.. */ if (!has_vforked) follow_inferior_reset_breakpoints (); } if (has_vforked) { /* If we followed the parent, don't try to follow the child's exec. */ if (saved_vfork_state != STATE_GOT_PARENT && saved_vfork_state != STATE_FAKE_EXEC) fprintf_unfiltered (gdb_stdout, "hppa: post follow vfork: confused state\n"); if (! follow_child || saved_vfork_state == STATE_GOT_PARENT) saved_vfork_state = STATE_NONE; else return 1; } return 0; }
static int captured_main (void *data) { struct captured_main_args *context = data; int argc = context->argc; char **argv = context->argv; int count; static int quiet = 0; static int batch = 0; static int set_args = 0; /* Pointers to various arguments from command line. */ char *symarg = NULL; char *execarg = NULL; char *corearg = NULL; char *cdarg = NULL; char *ttyarg = NULL; /* These are static so that we can take their address in an initializer. */ static int print_help; static int print_version; /* Pointers to all arguments of --command option. */ char **cmdarg; /* Allocated size of cmdarg. */ int cmdsize; /* Number of elements of cmdarg used. */ int ncmd; /* Indices of all arguments of --directory option. */ char **dirarg; /* Allocated size. */ int dirsize; /* Number of elements used. */ int ndir; struct stat homebuf, cwdbuf; char *homedir, *homeinit; int i; long time_at_startup = get_run_time (); #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) setlocale (LC_MESSAGES, ""); #endif #if defined (HAVE_SETLOCALE) setlocale (LC_CTYPE, ""); #endif bindtextdomain (PACKAGE, LOCALEDIR); textdomain (PACKAGE); /* This needs to happen before the first use of malloc. */ init_malloc (NULL); #ifdef HAVE_SBRK lim_at_start = (char *) sbrk (0); #endif #if defined (ALIGN_STACK_ON_STARTUP) i = (int) &count & 0x3; if (i != 0) alloca (4 - i); #endif cmdsize = 1; cmdarg = (char **) xmalloc (cmdsize * sizeof (*cmdarg)); ncmd = 0; dirsize = 1; dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg)); ndir = 0; quit_flag = 0; line = (char *) xmalloc (linesize); line[0] = '\0'; /* Terminate saved (now empty) cmd line */ instream = stdin; getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); current_directory = gdb_dirbuf; gdb_stdout = stdio_fileopen (stdout); gdb_stderr = stdio_fileopen (stderr); gdb_stdlog = gdb_stderr; /* for moment */ gdb_stdtarg = gdb_stderr; /* for moment */ gdb_stdin = stdio_fileopen (stdin); gdb_stdtargerr = gdb_stderr; /* for moment */ gdb_stdtargin = gdb_stdin; /* for moment */ /* initialize error() */ error_init (); /* Set the sysroot path. */ #ifdef TARGET_SYSTEM_ROOT_RELOCATABLE gdb_sysroot = make_relative_prefix (argv[0], BINDIR, TARGET_SYSTEM_ROOT); if (gdb_sysroot) { struct stat s; int res = 0; if (stat (gdb_sysroot, &s) == 0) if (S_ISDIR (s.st_mode)) res = 1; if (res == 0) { xfree (gdb_sysroot); gdb_sysroot = TARGET_SYSTEM_ROOT; } } else gdb_sysroot = TARGET_SYSTEM_ROOT; #else #if defined (TARGET_SYSTEM_ROOT) gdb_sysroot = TARGET_SYSTEM_ROOT; #else gdb_sysroot = ""; #endif #endif /* There will always be an interpreter. Either the one passed into this captured main, or one specified by the user at start up, or the console. Initialize the interpreter to the one requested by the application. */ interpreter_p = xstrdup (context->interpreter_p); /* Parse arguments and options. */ { int c; /* When var field is 0, use flag field to record the equivalent short option (or arbitrary numbers starting at 10 for those with no equivalent). */ enum { OPT_SE = 10, OPT_CD, OPT_ANNOTATE, OPT_STATISTICS, OPT_TUI, OPT_NOWINDOWS, OPT_WINDOWS }; static struct option long_options[] = { #if defined(TUI) {"tui", no_argument, 0, OPT_TUI}, #endif {"xdb", no_argument, &xdb_commands, 1}, {"dbx", no_argument, &dbx_commands, 1}, {"readnow", no_argument, &readnow_symbol_files, 1}, {"r", no_argument, &readnow_symbol_files, 1}, {"quiet", no_argument, &quiet, 1}, {"q", no_argument, &quiet, 1}, {"silent", no_argument, &quiet, 1}, {"nx", no_argument, &inhibit_gdbinit, 1}, {"n", no_argument, &inhibit_gdbinit, 1}, {"batch", no_argument, &batch, 1}, {"epoch", no_argument, &epoch_interface, 1}, /* This is a synonym for "--annotate=1". --annotate is now preferred, but keep this here for a long time because people will be running emacses which use --fullname. */ {"fullname", no_argument, 0, 'f'}, {"f", no_argument, 0, 'f'}, {"annotate", required_argument, 0, OPT_ANNOTATE}, {"help", no_argument, &print_help, 1}, {"se", required_argument, 0, OPT_SE}, {"symbols", required_argument, 0, 's'}, {"s", required_argument, 0, 's'}, {"exec", required_argument, 0, 'e'}, {"e", required_argument, 0, 'e'}, {"core", required_argument, 0, 'c'}, {"c", required_argument, 0, 'c'}, {"pid", required_argument, 0, 'p'}, {"p", required_argument, 0, 'p'}, {"command", required_argument, 0, 'x'}, {"version", no_argument, &print_version, 1}, {"x", required_argument, 0, 'x'}, #ifdef GDBTK {"tclcommand", required_argument, 0, 'z'}, {"enable-external-editor", no_argument, 0, 'y'}, {"editor-command", required_argument, 0, 'w'}, #endif {"ui", required_argument, 0, 'i'}, {"interpreter", required_argument, 0, 'i'}, {"i", required_argument, 0, 'i'}, {"directory", required_argument, 0, 'd'}, {"d", required_argument, 0, 'd'}, {"cd", required_argument, 0, OPT_CD}, {"tty", required_argument, 0, 't'}, {"baud", required_argument, 0, 'b'}, {"b", required_argument, 0, 'b'}, {"nw", no_argument, NULL, OPT_NOWINDOWS}, {"nowindows", no_argument, NULL, OPT_NOWINDOWS}, {"w", no_argument, NULL, OPT_WINDOWS}, {"windows", no_argument, NULL, OPT_WINDOWS}, {"statistics", no_argument, 0, OPT_STATISTICS}, {"write", no_argument, &write_files, 1}, {"args", no_argument, &set_args, 1}, {0, no_argument, 0, 0} }; while (1) { int option_index; c = getopt_long_only (argc, argv, "", long_options, &option_index); if (c == EOF || set_args) break; /* Long option that takes an argument. */ if (c == 0 && long_options[option_index].flag == 0) c = long_options[option_index].val; switch (c) { case 0: /* Long option that just sets a flag. */ break; case OPT_SE: symarg = optarg; execarg = optarg; break; case OPT_CD: cdarg = optarg; break; case OPT_ANNOTATE: /* FIXME: what if the syntax is wrong (e.g. not digits)? */ annotation_level = atoi (optarg); break; case OPT_STATISTICS: /* Enable the display of both time and space usage. */ display_time = 1; display_space = 1; break; case OPT_TUI: /* --tui is equivalent to -i=tui. */ xfree (interpreter_p); interpreter_p = xstrdup ("tui"); 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. */ use_windows = 1; break; case OPT_NOWINDOWS: /* -nw is equivalent to -i=console. */ xfree (interpreter_p); interpreter_p = xstrdup (INTERP_CONSOLE); use_windows = 0; break; case 'f': annotation_level = 1; /* We have probably been invoked from emacs. Disable window interface. */ use_windows = 0; break; case 's': symarg = optarg; break; case 'e': execarg = optarg; break; case 'c': corearg = optarg; break; case 'p': /* "corearg" is shared by "--core" and "--pid" */ corearg = optarg; break; case 'x': cmdarg[ncmd++] = optarg; if (ncmd >= cmdsize) { cmdsize *= 2; cmdarg = (char **) xrealloc ((char *) cmdarg, cmdsize * sizeof (*cmdarg)); } break; #ifdef GDBTK case 'z': { extern int gdbtk_test (char *); if (!gdbtk_test (optarg)) { fprintf_unfiltered (gdb_stderr, _("%s: unable to load tclcommand file \"%s\""), argv[0], optarg); exit (1); } break; } case 'y': /* Backwards compatibility only. */ break; case 'w': { external_editor_command = xstrdup (optarg); break; } #endif /* GDBTK */ case 'i': xfree (interpreter_p); interpreter_p = xstrdup (optarg); break; case 'd': dirarg[ndir++] = optarg; if (ndir >= dirsize) { dirsize *= 2; dirarg = (char **) xrealloc ((char *) dirarg, dirsize * sizeof (*dirarg)); } break; case 't': ttyarg = optarg; break; case 'q': quiet = 1; break; case 'b': { int i; char *p; i = strtol (optarg, &p, 0); if (i == 0 && p == optarg) /* Don't use *_filtered or warning() (which relies on current_target) until after initialize_all_files(). */ fprintf_unfiltered (gdb_stderr, _("warning: could not set baud rate to `%s'.\n"), optarg); else baud_rate = i; } break; case 'l': { int i; char *p; i = strtol (optarg, &p, 0); if (i == 0 && p == optarg) /* Don't use *_filtered or warning() (which relies on current_target) until after initialize_all_files(). */ fprintf_unfiltered (gdb_stderr, _("warning: could not set timeout limit to `%s'.\n"), optarg); else remote_timeout = i; } break; case '?': fprintf_unfiltered (gdb_stderr, _("Use `%s --help' for a complete list of options.\n"), argv[0]); exit (1); } } /* If --help or --version, disable window interface. */ if (print_help || print_version) { use_windows = 0; } if (set_args) { /* The remaining options are the command-line options for the inferior. The first one is the sym/exec file, and the rest are arguments. */ if (optind >= argc) { fprintf_unfiltered (gdb_stderr, _("%s: `--args' specified but no program specified\n"), argv[0]); exit (1); } symarg = argv[optind]; execarg = argv[optind]; ++optind; set_inferior_args_vector (argc - optind, &argv[optind]); } else { /* OK, that's all the options. The other arguments are filenames. */ count = 0; for (; optind < argc; optind++) switch (++count) { case 1: symarg = argv[optind]; execarg = argv[optind]; break; case 2: /* The documentation says this can be a "ProcID" as well. We will try it as both a corefile and a pid. */ corearg = argv[optind]; break; case 3: fprintf_unfiltered (gdb_stderr, _("Excess command line arguments ignored. (%s%s)\n"), argv[optind], (optind == argc - 1) ? "" : " ..."); break; } } if (batch) quiet = 1; } /* Initialize all files. Give the interpreter a chance to take control of the console via the deprecated_init_ui_hook(). */ gdb_init (argv[0]); /* Do these (and anything which might call wrap_here or *_filtered) after initialize_all_files() but before the interpreter has been installed. Otherwize the help/version messages will be eaten by the interpreter's output handler. */ if (print_version) { print_gdb_version (gdb_stdout); wrap_here (""); printf_filtered ("\n"); exit (0); } if (print_help) { print_gdb_help (gdb_stdout); fputs_unfiltered ("\n", gdb_stdout); exit (0); } /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets GDB retain the old MI1 interpreter startup behavior. Output the copyright message before the interpreter is installed. That way it isn't encapsulated in MI output. */ 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); if (symarg) printf_filtered (".."); wrap_here (""); gdb_flush (gdb_stdout); /* Force to screen during slow operations */ } /* Install the default UI. All the interpreters should have had a look at things by now. Initialize the default interpreter. */ { /* Find it. */ struct interp *interp = interp_lookup (interpreter_p); if (interp == NULL) error ("Interpreter `%s' unrecognized", interpreter_p); /* Install it. */ if (!interp_set (interp)) { fprintf_unfiltered (gdb_stderr, "Interpreter `%s' failed to initialize.\n", interpreter_p); exit (1); } } /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets GDB retain the old MI1 interpreter startup behavior. Output the copyright message after the interpreter is installed when it is any sane interpreter. */ 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); if (symarg) printf_filtered (".."); wrap_here (""); gdb_flush (gdb_stdout); /* Force to screen during slow operations */ } error_pre_print = "\n\n"; quit_pre_print = error_pre_print; /* We may get more than one warning, don't double space all of them... */ warning_pre_print = _("\nwarning: "); /* 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. */ homedir = getenv ("HOME"); if (homedir) { homeinit = (char *) alloca (strlen (homedir) + strlen (gdbinit) + 10); strcpy (homeinit, homedir); strcat (homeinit, "/"); strcat (homeinit, gdbinit); if (!inhibit_gdbinit) { catch_command_errors (source_command, homeinit, 0, RETURN_MASK_ALL); } /* Do stats; no need to do them elsewhere since we'll only need them if homedir is set. Make sure that they 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)); stat (homeinit, &homebuf); stat (gdbinit, &cwdbuf); /* We'll only need this if homedir was set. */ } /* Now perform all the actions indicated by the arguments. */ if (cdarg != NULL) { catch_command_errors (cd_command, cdarg, 0, RETURN_MASK_ALL); } for (i = 0; i < ndir; i++) catch_command_errors (directory_command, dirarg[i], 0, RETURN_MASK_ALL); xfree (dirarg); if (execarg != NULL && symarg != NULL && 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, RETURN_MASK_ALL)) catch_command_errors (symbol_file_add_main, symarg, 0, RETURN_MASK_ALL); } else { if (execarg != NULL) catch_command_errors (exec_file_attach, execarg, !batch, RETURN_MASK_ALL); if (symarg != NULL) catch_command_errors (symbol_file_add_main, symarg, 0, RETURN_MASK_ALL); } /* After the symbol file has been read, print a newline to get us beyond the copyright line... But errors should still set off the error message with a (single) blank line. */ if (!quiet) printf_filtered ("\n"); error_pre_print = "\n"; quit_pre_print = error_pre_print; warning_pre_print = _("\nwarning: "); if (corearg != NULL) { /* corearg may be either a corefile or a pid. If its first character is a digit, try attach first and then corefile. Otherwise try corefile first. */ if (isdigit (corearg[0])) { if (catch_command_errors (attach_command, corearg, !batch, RETURN_MASK_ALL) == 0) catch_command_errors (core_file_command, corearg, !batch, RETURN_MASK_ALL); } else /* Can't be a pid, better be a corefile. */ catch_command_errors (core_file_command, corearg, !batch, RETURN_MASK_ALL); } if (ttyarg != NULL) catch_command_errors (tty_command, ttyarg, !batch, RETURN_MASK_ALL); /* Error messages should no longer be distinguished with extra output. */ error_pre_print = NULL; quit_pre_print = NULL; 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 (!homedir || memcmp ((char *) &homebuf, (char *) &cwdbuf, sizeof (struct stat))) if (!inhibit_gdbinit) { catch_command_errors (source_command, gdbinit, 0, RETURN_MASK_ALL); } for (i = 0; i < ncmd; i++) { #if 0 /* NOTE: cagney/1999-11-03: SET_TOP_LEVEL() was a macro that expanded into a call to setjmp(). */ if (!SET_TOP_LEVEL ()) /* NB: This is #if 0'd out */ { /* NOTE: I am commenting this out, because it is not clear where this feature is used. It is very old and undocumented. ezannoni: 1999-05-04 */ #if 0 if (cmdarg[i][0] == '-' && cmdarg[i][1] == '\0') read_command_file (stdin); else #endif source_command (cmdarg[i], !batch); do_cleanups (ALL_CLEANUPS); } #endif catch_command_errors (source_command, cmdarg[i], !batch, RETURN_MASK_ALL); } xfree (cmdarg); /* Read in the old history after all the command files have been read. */ init_history (); if (batch) { if (attach_flag) /* Either there was a problem executing the command in the batch file aborted early, or the batch file forgot to do an explicit detach. Explicitly detach the inferior ensuring that there are no zombies. */ target_detach (NULL, 0); /* We have hit the end of the batch file. */ exit (0); } /* Do any host- or target-specific hacks. This is used for i960 targets to force the user to set a nindy target and spec its parameters. */ #ifdef BEFORE_MAIN_LOOP_HOOK BEFORE_MAIN_LOOP_HOOK; #endif /* Show time and/or space usage. */ if (display_time) { long init_time = get_run_time () - time_at_startup; printf_unfiltered (_("Startup time: %ld.%06ld\n"), init_time / 1000000, init_time % 1000000); } if (display_space) { #ifdef HAVE_SBRK extern char **environ; char *lim = (char *) sbrk (0); printf_unfiltered (_("Startup size: data size %ld\n"), (long) (lim - (char *) &environ)); #endif } #if 0 /* FIXME: cagney/1999-11-06: The original main loop was like: */ while (1) { if (!SET_TOP_LEVEL ()) { do_cleanups (ALL_CLEANUPS); /* Do complete cleanup */ /* GUIs generally have their own command loop, mainloop, or whatever. This is a good place to gain control because many error conditions will end up here via longjmp(). */ if (deprecated_command_loop_hook) deprecated_command_loop_hook (); else deprecated_command_loop (); quit_command ((char *) 0, instream == stdin); } } /* NOTE: If the command_loop() returned normally, the loop would attempt to exit by calling the function quit_command(). That function would either call exit() or throw an error returning control to SET_TOP_LEVEL. */ /* NOTE: The function do_cleanups() was called once each time round the loop. The usefulness of the call isn't clear. If an error was thrown, everything would have already been cleaned up. If command_loop() returned normally and quit_command() was called, either exit() or error() (again cleaning up) would be called. */ #endif /* NOTE: cagney/1999-11-07: There is probably no reason for not moving this loop and the code found in captured_command_loop() into the command_loop() proper. The main thing holding back that change - SET_TOP_LEVEL() - has been eliminated. */ while (1) { catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL); } /* No exit -- exit is through quit_command. */ }
void gdb_main(void) { int size; bool single_step = false; char last_activity = 0; DEBUG("Entring GDB protocol main loop\n"); /* GDB protocol main loop */ while(1) { SET_IDLE_STATE(1); size = gdb_getpacket(pbuf, BUF_SIZE); SET_IDLE_STATE(0); continue_activity: switch(pbuf[0]) { /* Implementation of these is mandatory! */ case 'g': { /* 'g': Read general registers */ ERROR_IF_NO_TARGET(); uint8_t arm_regs[target_regs_size(cur_target)]; target_regs_read(cur_target, arm_regs); gdb_putpacket(hexify(pbuf, arm_regs, sizeof(arm_regs)), sizeof(arm_regs) * 2); break; } case 'm': { /* 'm addr,len': Read len bytes from addr */ uint32_t addr, len; ERROR_IF_NO_TARGET(); sscanf(pbuf, "m%" SCNx32 ",%" SCNx32, &addr, &len); DEBUG("m packet: addr = %" PRIx32 ", len = %" PRIx32 "\n", addr, len); uint8_t mem[len]; target_mem_read(cur_target, mem, addr, len); if(target_check_error(cur_target)) gdb_putpacketz("E01"); else gdb_putpacket(hexify(pbuf, mem, len), len*2); break; } case 'G': { /* 'G XX': Write general registers */ ERROR_IF_NO_TARGET(); uint8_t arm_regs[target_regs_size(cur_target)]; unhexify(arm_regs, &pbuf[1], sizeof(arm_regs)); target_regs_write(cur_target, arm_regs); gdb_putpacketz("OK"); break; } case 'M': { /* 'M addr,len:XX': Write len bytes to addr */ uint32_t addr, len; int hex; ERROR_IF_NO_TARGET(); sscanf(pbuf, "M%" SCNx32 ",%" SCNx32 ":%n", &addr, &len, &hex); DEBUG("M packet: addr = %" PRIx32 ", len = %" PRIx32 "\n", addr, len); uint8_t mem[len]; unhexify(mem, pbuf + hex, len); target_mem_write(cur_target, addr, mem, len); if(target_check_error(cur_target)) gdb_putpacketz("E01"); else gdb_putpacketz("OK"); break; } case 's': /* 's [addr]': Single step [start at addr] */ single_step = true; // Fall through to resume target case 'c': /* 'c [addr]': Continue [at addr] */ if(!cur_target) { gdb_putpacketz("X1D"); break; } target_halt_resume(cur_target, single_step); SET_RUN_STATE(1); single_step = false; // Fall through to wait for target halt case '?': { /* '?': Request reason for target halt */ /* This packet isn't documented as being mandatory, * but GDB doesn't work without it. */ uint32_t watch_addr; int sig; if(!cur_target) { /* Report "target exited" if no target */ gdb_putpacketz("W00"); break; } last_activity = pbuf[0]; /* Wait for target halt */ while(!(sig = target_halt_wait(cur_target))) { unsigned char c = gdb_if_getchar_to(0); if((c == '\x03') || (c == '\x04')) { target_halt_request(cur_target); last_activity = 's'; } } SET_RUN_STATE(0); /* Negative signal indicates we're in a syscall */ if (sig < 0) break; /* Target disappeared */ if (cur_target == NULL) { gdb_putpacket_f("X%02X", sig); break; } /* Report reason for halt */ if(target_check_hw_wp(cur_target, &watch_addr)) { /* Watchpoint hit */ gdb_putpacket_f("T%02Xwatch:%08X;", sig, watch_addr); } else { gdb_putpacket_f("T%02X", sig); } break; } case 'F': { /* Semihosting call finished */ int retcode, errcode, items; char c, *p; if (pbuf[1] == '-') p = &pbuf[2]; else p = &pbuf[1]; items = sscanf(p, "%x,%x,%c", &retcode, &errcode, &c); if (pbuf[1] == '-') retcode = -retcode; target_hostio_reply(cur_target, retcode, errcode); /* if break is requested */ if (items == 3 && c == 'C') { gdb_putpacketz("T02"); break; } pbuf[0] = last_activity; goto continue_activity; } /* Optional GDB packet support */ case '!': /* Enable Extended GDB Protocol. */ /* This doesn't do anything, we support the extended * protocol anyway, but GDB will never send us a 'R' * packet unless we answer 'OK' here. */ gdb_putpacketz("OK"); break; case 0x04: case 'D': /* GDB 'detach' command. */ if(cur_target) target_detach(cur_target); last_target = cur_target; cur_target = NULL; gdb_putpacketz("OK"); break; case 'k': /* Kill the target */ if(cur_target) { target_reset(cur_target); target_detach(cur_target); last_target = cur_target; cur_target = NULL; } break; case 'r': /* Reset the target system */ case 'R': /* Restart the target program */ if(cur_target) target_reset(cur_target); else if(last_target) { cur_target = target_attach(last_target, gdb_target_destroy_callback); target_reset(cur_target); } break; case 'X': { /* 'X addr,len:XX': Write binary data to addr */ uint32_t addr, len; int bin; ERROR_IF_NO_TARGET(); sscanf(pbuf, "X%" SCNx32 ",%" SCNx32 ":%n", &addr, &len, &bin); DEBUG("X packet: addr = %" PRIx32 ", len = %" PRIx32 "\n", addr, len); target_mem_write(cur_target, addr, pbuf+bin, len); if(target_check_error(cur_target)) gdb_putpacketz("E01"); else gdb_putpacketz("OK"); break; } case 'q': /* General query packet */ handle_q_packet(pbuf, size); break; case 'v': /* General query packet */ handle_v_packet(pbuf, size); break; /* These packet implement hardware break-/watchpoints */ case 'Z': /* Z type,addr,len: Set breakpoint packet */ case 'z': /* z type,addr,len: Clear breakpoint packet */ ERROR_IF_NO_TARGET(); handle_z_packet(pbuf, size); break; default: /* Packet not implemented */ DEBUG("*** Unsupported packet: %s\n", pbuf); gdb_putpacketz(""); } } }
int gdb_main_loop(struct target_controller *tc, bool in_syscall) { int size; bool single_step = false; /* GDB protocol main loop */ while(1) { SET_IDLE_STATE(1); size = gdb_getpacket(pbuf, BUF_SIZE); SET_IDLE_STATE(0); switch(pbuf[0]) { /* Implementation of these is mandatory! */ case 'g': { /* 'g': Read general registers */ ERROR_IF_NO_TARGET(); uint8_t arm_regs[target_regs_size(cur_target)]; target_regs_read(cur_target, arm_regs); gdb_putpacket(hexify(pbuf, arm_regs, sizeof(arm_regs)), sizeof(arm_regs) * 2); break; } case 'm': { /* 'm addr,len': Read len bytes from addr */ uint32_t addr, len; ERROR_IF_NO_TARGET(); sscanf(pbuf, "m%" SCNx32 ",%" SCNx32, &addr, &len); if (len > sizeof(pbuf) / 2) { gdb_putpacketz("E02"); break; } DEBUG("m packet: addr = %" PRIx32 ", len = %" PRIx32 "\n", addr, len); uint8_t mem[len]; if (target_mem_read(cur_target, mem, addr, len)) gdb_putpacketz("E01"); else gdb_putpacket(hexify(pbuf, mem, len), len*2); break; } case 'G': { /* 'G XX': Write general registers */ ERROR_IF_NO_TARGET(); uint8_t arm_regs[target_regs_size(cur_target)]; unhexify(arm_regs, &pbuf[1], sizeof(arm_regs)); target_regs_write(cur_target, arm_regs); gdb_putpacketz("OK"); break; } case 'M': { /* 'M addr,len:XX': Write len bytes to addr */ uint32_t addr, len; int hex; ERROR_IF_NO_TARGET(); sscanf(pbuf, "M%" SCNx32 ",%" SCNx32 ":%n", &addr, &len, &hex); if (len > (unsigned)(size - hex) / 2) { gdb_putpacketz("E02"); break; } DEBUG("M packet: addr = %" PRIx32 ", len = %" PRIx32 "\n", addr, len); uint8_t mem[len]; unhexify(mem, pbuf + hex, len); if (target_mem_write(cur_target, addr, mem, len)) gdb_putpacketz("E01"); else gdb_putpacketz("OK"); break; } case 's': /* 's [addr]': Single step [start at addr] */ single_step = true; /* fall through */ case 'c': /* 'c [addr]': Continue [at addr] */ if(!cur_target) { gdb_putpacketz("X1D"); break; } target_halt_resume(cur_target, single_step); SET_RUN_STATE(1); single_step = false; /* fall through */ case '?': { /* '?': Request reason for target halt */ /* This packet isn't documented as being mandatory, * but GDB doesn't work without it. */ target_addr watch; enum target_halt_reason reason; if(!cur_target) { /* Report "target exited" if no target */ gdb_putpacketz("W00"); break; } /* Wait for target halt */ while(!(reason = target_halt_poll(cur_target, &watch))) { unsigned char c = gdb_if_getchar_to(0); if((c == '\x03') || (c == '\x04')) { target_halt_request(cur_target); } } SET_RUN_STATE(0); /* Translate reason to GDB signal */ switch (reason) { case TARGET_HALT_ERROR: gdb_putpacket_f("X%02X", GDB_SIGLOST); morse("TARGET LOST.", true); break; case TARGET_HALT_REQUEST: gdb_putpacket_f("T%02X", GDB_SIGINT); break; case TARGET_HALT_WATCHPOINT: gdb_putpacket_f("T%02Xwatch:%08X;", GDB_SIGTRAP, watch); break; case TARGET_HALT_FAULT: gdb_putpacket_f("T%02X", GDB_SIGSEGV); break; default: gdb_putpacket_f("T%02X", GDB_SIGTRAP); } break; } case 'F': /* Semihosting call finished */ if (in_syscall) { return hostio_reply(tc, pbuf, size); } else { DEBUG("*** F packet when not in syscall! '%s'\n", pbuf); gdb_putpacketz(""); } break; /* Optional GDB packet support */ case '!': /* Enable Extended GDB Protocol. */ /* This doesn't do anything, we support the extended * protocol anyway, but GDB will never send us a 'R' * packet unless we answer 'OK' here. */ gdb_putpacketz("OK"); break; case 0x04: case 'D': /* GDB 'detach' command. */ if(cur_target) target_detach(cur_target); last_target = cur_target; cur_target = NULL; gdb_putpacketz("OK"); break; case 'k': /* Kill the target */ if(cur_target) { target_reset(cur_target); target_detach(cur_target); last_target = cur_target; cur_target = NULL; } break; case 'r': /* Reset the target system */ case 'R': /* Restart the target program */ if(cur_target) target_reset(cur_target); else if(last_target) { cur_target = target_attach(last_target, &gdb_controller); target_reset(cur_target); } break; case 'X': { /* 'X addr,len:XX': Write binary data to addr */ uint32_t addr, len; int bin; ERROR_IF_NO_TARGET(); sscanf(pbuf, "X%" SCNx32 ",%" SCNx32 ":%n", &addr, &len, &bin); if (len > (unsigned)(size - bin)) { gdb_putpacketz("E02"); break; } DEBUG("X packet: addr = %" PRIx32 ", len = %" PRIx32 "\n", addr, len); if (target_mem_write(cur_target, addr, pbuf+bin, len)) gdb_putpacketz("E01"); else gdb_putpacketz("OK"); break; } case 'q': /* General query packet */ handle_q_packet(pbuf, size); break; case 'v': /* General query packet */ handle_v_packet(pbuf, size); break; /* These packet implement hardware break-/watchpoints */ case 'Z': /* Z type,addr,len: Set breakpoint packet */ case 'z': /* z type,addr,len: Clear breakpoint packet */ ERROR_IF_NO_TARGET(); handle_z_packet(pbuf, size); break; default: /* Packet not implemented */ DEBUG("*** Unsupported packet: %s\n", pbuf); gdb_putpacketz(""); } } }
static int captured_main (void *data) { /* If you add initializations here, you also need to add then to the proc do_steps_and_nexts in selftest.exp. */ struct captured_main_args *context = data; int argc = context->argc; char **argv = context->argv; int count; static int quiet = 0; static int batch = 0; static int set_args = 0; /* Pointers to various arguments from command line. */ char *symarg = NULL; char *execarg = NULL; char *corearg = NULL; char *cdarg = NULL; char *ttyarg = NULL; /* APPLE LOCAL: Set the osabi via option. */ char *osabiarg = NULL; /* These are static so that we can take their address in an initializer. */ static int print_help; static int print_version; /* Pointers to all arguments of --command option. */ char **cmdarg; /* Allocated size of cmdarg. */ int cmdsize; /* Number of elements of cmdarg used. */ int ncmd; /* Indices of all arguments of --directory option. */ char **dirarg; /* Allocated size. */ int dirsize; /* Number of elements used. */ int ndir; /* APPLE LOCAL globalbuf */ struct stat homebuf, cwdbuf, globalbuf; char *homedir; /* APPLE LOCAL attach -waitfor */ char *attach_waitfor = NULL; /* APPLE LOCAL: set the architecture. */ char *initial_arch = NULL; int i; long time_at_startup = get_run_time (); #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) setlocale (LC_MESSAGES, ""); #endif #if defined (HAVE_SETLOCALE) setlocale (LC_CTYPE, ""); #endif bindtextdomain (PACKAGE, LOCALEDIR); textdomain (PACKAGE); /* APPLE LOCAL memory */ #ifdef USE_MMALLOC init_mmalloc_default_pool ((PTR) NULL); #endif /* This needs to happen before the first use of malloc. */ init_malloc (NULL); #ifdef HAVE_SBRK lim_at_start = (char *) sbrk (0); #endif #if defined (ALIGN_STACK_ON_STARTUP) i = (int) &count & 0x3; if (i != 0) alloca (4 - i); #endif cmdsize = 1; cmdarg = (char **) xmalloc (cmdsize * sizeof (*cmdarg)); ncmd = 0; dirsize = 1; dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg)); ndir = 0; quit_flag = 0; line = (char *) xmalloc (linesize); line[0] = '\0'; /* Terminate saved (now empty) cmd line */ instream = stdin; getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); current_directory = gdb_dirbuf; /* APPLE LOCAL gdb_null */ gdb_null = ui_file_new (); gdb_stdout = stdio_fileopen (stdout); gdb_stderr = stdio_fileopen (stderr); gdb_stdlog = gdb_stderr; /* for moment */ gdb_stdtarg = gdb_stderr; /* for moment */ gdb_stdin = stdio_fileopen (stdin); gdb_stdtargerr = gdb_stderr; /* for moment */ gdb_stdtargin = gdb_stdin; /* for moment */ /* APPLE LOCAL: set our main thread's name */ #ifdef HAVE_PTHREAD_SETNAME_NP pthread_setname_np ("gdb main thread"); #endif /* Set the sysroot path. */ #ifdef TARGET_SYSTEM_ROOT_RELOCATABLE gdb_sysroot = make_relative_prefix (argv[0], BINDIR, TARGET_SYSTEM_ROOT); if (gdb_sysroot) { struct stat s; int res = 0; if (stat (gdb_sysroot, &s) == 0) if (S_ISDIR (s.st_mode)) res = 1; if (res == 0) { xfree (gdb_sysroot); gdb_sysroot = TARGET_SYSTEM_ROOT; } } else gdb_sysroot = TARGET_SYSTEM_ROOT; #else #if defined (TARGET_SYSTEM_ROOT) gdb_sysroot = TARGET_SYSTEM_ROOT; #else gdb_sysroot = ""; #endif #endif /* There will always be an interpreter. Either the one passed into this captured main, or one specified by the user at start up, or the console. Initialize the interpreter to the one requested by the application. */ interpreter_p = xstrdup (context->interpreter_p); /* Parse arguments and options. */ { int c; /* When var field is 0, use flag field to record the equivalent short option (or arbitrary numbers starting at 10 for those with no equivalent). */ enum { OPT_SE = 10, OPT_CD, OPT_ANNOTATE, OPT_STATISTICS, OPT_TUI, OPT_NOWINDOWS, OPT_WINDOWS, OPT_WAITFOR, /* APPLE LOCAL */ OPT_ARCH, /* APPLE LOCAL */ OPT_OSABI /* APPLE LOCAL */ }; static struct option long_options[] = { #if defined(TUI) {"tui", no_argument, 0, OPT_TUI}, #endif {"xdb", no_argument, &xdb_commands, 1}, {"dbx", no_argument, &dbx_commands, 1}, {"readnow", no_argument, &readnow_symbol_files, 1}, {"r", no_argument, &readnow_symbol_files, 1}, {"quiet", no_argument, &quiet, 1}, {"q", no_argument, &quiet, 1}, {"silent", no_argument, &quiet, 1}, {"nx", no_argument, &inhibit_gdbinit, 1}, {"n", no_argument, &inhibit_gdbinit, 1}, {"batch", no_argument, &batch, 1}, {"epoch", no_argument, &epoch_interface, 1}, /* This is a synonym for "--annotate=1". --annotate is now preferred, but keep this here for a long time because people will be running emacses which use --fullname. */ {"fullname", no_argument, 0, 'f'}, {"f", no_argument, 0, 'f'}, {"annotate", required_argument, 0, OPT_ANNOTATE}, {"help", no_argument, &print_help, 1}, {"se", required_argument, 0, OPT_SE}, {"symbols", required_argument, 0, 's'}, {"s", required_argument, 0, 's'}, {"exec", required_argument, 0, 'e'}, {"e", required_argument, 0, 'e'}, {"core", required_argument, 0, 'c'}, {"c", required_argument, 0, 'c'}, {"pid", required_argument, 0, 'p'}, {"p", required_argument, 0, 'p'}, {"command", required_argument, 0, 'x'}, {"version", no_argument, &print_version, 1}, {"x", required_argument, 0, 'x'}, #ifdef GDBTK {"tclcommand", required_argument, 0, 'z'}, {"enable-external-editor", no_argument, 0, 'y'}, {"editor-command", required_argument, 0, 'w'}, #endif {"ui", required_argument, 0, 'i'}, {"interpreter", required_argument, 0, 'i'}, {"i", required_argument, 0, 'i'}, {"directory", required_argument, 0, 'd'}, {"d", required_argument, 0, 'd'}, {"cd", required_argument, 0, OPT_CD}, {"tty", required_argument, 0, 't'}, {"baud", required_argument, 0, 'b'}, {"b", required_argument, 0, 'b'}, {"nw", no_argument, NULL, OPT_NOWINDOWS}, {"nowindows", no_argument, NULL, OPT_NOWINDOWS}, {"w", no_argument, NULL, OPT_WINDOWS}, {"windows", no_argument, NULL, OPT_WINDOWS}, {"statistics", no_argument, 0, OPT_STATISTICS}, {"write", no_argument, &write_files, 1}, {"args", no_argument, &set_args, 1}, /* APPLE LOCAL: */ {"waitfor", required_argument, 0, OPT_WAITFOR}, /* APPLE LOCAL: */ {"arch", required_argument, 0, OPT_ARCH}, /* APPLE LOCAL: */ {"osabi", required_argument, 0, OPT_OSABI}, {"l", required_argument, 0, 'l'}, {0, no_argument, 0, 0} }; while (1) { int option_index; c = getopt_long_only (argc, argv, "", long_options, &option_index); if (c == EOF || set_args) break; /* Long option that takes an argument. */ if (c == 0 && long_options[option_index].flag == 0) c = long_options[option_index].val; switch (c) { case 0: /* Long option that just sets a flag. */ break; case OPT_SE: symarg = optarg; execarg = optarg; break; case OPT_CD: cdarg = optarg; break; case OPT_ANNOTATE: /* FIXME: what if the syntax is wrong (e.g. not digits)? */ annotation_level = atoi (optarg); break; case OPT_STATISTICS: /* Enable the display of both time and space usage. */ display_time = 1; display_space = 1; break; case OPT_TUI: /* --tui is equivalent to -i=tui. */ xfree (interpreter_p); interpreter_p = xstrdup ("tui"); 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. */ use_windows = 1; break; case OPT_NOWINDOWS: /* -nw is equivalent to -i=console. */ xfree (interpreter_p); interpreter_p = xstrdup (INTERP_CONSOLE); use_windows = 0; break; /* APPLE LOCAL: */ case OPT_WAITFOR: attach_waitfor = (char *) xmalloc (12 + strlen (optarg)); sprintf (attach_waitfor, "-waitfor \"%s\"", optarg); break; /* APPLE LOCAL: */ case OPT_ARCH: initial_arch = xstrdup (optarg); break; /* APPLE LOCAL: Set the osabi via option. This option was added along with a modification to the gdb driver shell script for armv6. Binaries with the "arm" architecture (ARM v4T) and "armv6" (ARM v6) can be inter mixed on armv6 capaable targets since all instructions in the ARM v4T instruction set are present in the ARM v6 instruction set. The same gdb executable is used for both, and the osabi set/show variable controls which gets used for cross targets. We need to set this variable prior to loading any executables so that the correct slice of a fat file can be selected. Now gdb can be launched with the "armv6" arch along with an executable and the correct slice will be selected: gdb -arch armv6 <file> */ case OPT_OSABI: osabiarg = optarg; break; /* APPLE LOCAL END */ case 'f': annotation_level = 1; /* We have probably been invoked from emacs. Disable window interface. */ use_windows = 0; break; case 's': symarg = optarg; break; case 'e': execarg = optarg; break; case 'c': corearg = optarg; break; case 'p': /* "corearg" is shared by "--core" and "--pid" */ corearg = optarg; break; case 'x': cmdarg[ncmd++] = optarg; if (ncmd >= cmdsize) { cmdsize *= 2; cmdarg = (char **) xrealloc ((char *) cmdarg, cmdsize * sizeof (*cmdarg)); } break; #ifdef GDBTK case 'z': { extern int gdbtk_test (char *); if (!gdbtk_test (optarg)) { fprintf_unfiltered (gdb_stderr, _("%s: unable to load tclcommand file \"%s\""), argv[0], optarg); exit (1); } break; } case 'y': /* Backwards compatibility only. */ break; case 'w': { external_editor_command = xstrdup (optarg); break; } #endif /* GDBTK */ case 'i': xfree (interpreter_p); interpreter_p = xstrdup (optarg); break; case 'd': dirarg[ndir++] = optarg; if (ndir >= dirsize) { dirsize *= 2; dirarg = (char **) xrealloc ((char *) dirarg, dirsize * sizeof (*dirarg)); } break; case 't': ttyarg = optarg; break; case 'q': quiet = 1; break; case 'b': { int i; char *p; i = strtol (optarg, &p, 0); if (i == 0 && p == optarg) /* Don't use *_filtered or warning() (which relies on current_target) until after initialize_all_files(). */ fprintf_unfiltered (gdb_stderr, _("warning: could not set baud rate to `%s'.\n"), optarg); else baud_rate = i; } break; case 'l': { int i; char *p; i = strtol (optarg, &p, 0); if (i == 0 && p == optarg) /* Don't use *_filtered or warning() (which relies on current_target) until after initialize_all_files(). */ fprintf_unfiltered (gdb_stderr, _("warning: could not set timeout limit to `%s'.\n"), optarg); else remote_timeout = i; } break; case '?': fprintf_unfiltered (gdb_stderr, _("Use `%s --help' for a complete list of options.\n"), argv[0]); exit (1); } } /* If --help or --version, disable window interface. */ if (print_help || print_version) { use_windows = 0; } if (set_args) { /* The remaining options are the command-line options for the inferior. The first one is the sym/exec file, and the rest are arguments. */ if (optind >= argc) { fprintf_unfiltered (gdb_stderr, _("%s: `--args' specified but no program specified\n"), argv[0]); exit (1); } symarg = argv[optind]; execarg = argv[optind]; ++optind; set_inferior_args_vector (argc - optind, &argv[optind]); } else { /* OK, that's all the options. The other arguments are filenames. */ count = 0; for (; optind < argc; optind++) switch (++count) { case 1: symarg = argv[optind]; execarg = argv[optind]; break; case 2: /* The documentation says this can be a "ProcID" as well. We will try it as both a corefile and a pid. */ corearg = argv[optind]; break; case 3: fprintf_unfiltered (gdb_stderr, _("Excess command line arguments ignored. (%s%s)\n"), argv[optind], (optind == argc - 1) ? "" : " ..."); break; } } if (batch) quiet = 1; } /* Initialize all files. Give the interpreter a chance to take control of the console via the deprecated_init_ui_hook (). */ gdb_init (argv[0]); /* Do these (and anything which might call wrap_here or *_filtered) after initialize_all_files() but before the interpreter has been installed. Otherwize the help/version messages will be eaten by the interpreter's output handler. */ if (print_version) { print_gdb_version (gdb_stdout); wrap_here (""); printf_filtered ("\n"); exit (0); } if (print_help) { print_gdb_help (gdb_stdout); fputs_unfiltered ("\n", gdb_stdout); exit (0); } /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets GDB retain the old MI1 interpreter startup behavior. Output the copyright message before the interpreter is installed. That way it isn't encapsulated in MI output. */ if (!quiet && strcmp (interpreter_p, INTERP_MI1) == 0) { /* APPLE LOCAL begin don't print dots */ /* Print all the junk at the top. */ print_gdb_version (gdb_stdout); printf_filtered ("\n"); /* APPLE LOCAL end don't print dots */ wrap_here (""); gdb_flush (gdb_stdout); /* Force to screen during slow operations */ } /* APPLE LOCAL begin */ if (state_change_hook) { state_change_hook (STATE_ACTIVE); } /* APPLE LOCAL end */ /* Install the default UI. All the interpreters should have had a look at things by now. Initialize the default interpreter. */ { /* Find it. */ struct interp *interp = interp_lookup (interpreter_p); if (interp == NULL) error (_("Interpreter `%s' unrecognized"), interpreter_p); /* Install it. */ /* APPLE LOCAL clarity */ if (interp_set (interp) == NULL) { fprintf_unfiltered (gdb_stderr, "Interpreter `%s' failed to initialize.\n", interpreter_p); exit (1); } } /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets GDB retain the old MI1 interpreter startup behavior. Output the copyright message after the interpreter is installed when it is any sane interpreter. */ 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); if (symarg) printf_filtered (".."); wrap_here (""); gdb_flush (gdb_stdout); /* Force to screen during slow operations */ } error_pre_print = "\n\n"; quit_pre_print = error_pre_print; /* We may get more than one warning, don't double space all of them... */ warning_pre_print = _("\nwarning: "); /* APPLE LOCAL begin move inits up */ /* Make sure that they 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)); /* APPLE LOCAL end move inits up */ /* APPLE LOCAL begin global gdbinit */ memset (&globalbuf, 0, sizeof (struct stat)); stat (gdbinit_global, &globalbuf); if (!inhibit_gdbinit) { /* if (!SET_TOP_LEVEL ()) */ source_file (gdbinit_global, 0); } do_cleanups (ALL_CLEANUPS); /* APPLE LOCAL end global gdbinit */ /* APPLE LOCAL: Set the $_Xcode convenience variable at '0' before sourcing any .gdbinit files. Xcode will override this to 1 when it is launching gdb but we need to start with a value of 0 so .gdbinit files can use it in conditional expressions. */ set_internalvar (lookup_internalvar ("_Xcode"), value_from_longest (builtin_type_int, (LONGEST) 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. */ homedir = getenv ("HOME"); if (homedir) { char *homeinit = xstrprintf ("%s/%s", homedir, gdbinit); /* APPLE LOCAL move inits up */ stat (homeinit, &homebuf); /* APPLE LOCAL gdbinit */ if (!inhibit_gdbinit) if ((globalbuf.st_dev != homebuf.st_dev) || (globalbuf.st_ino != homebuf.st_ino)) { catch_command_errors (source_file, homeinit, 0, RETURN_MASK_ALL); } } /* Now perform all the actions indicated by the arguments. */ if (cdarg != NULL) { catch_command_errors (cd_command, cdarg, 0, RETURN_MASK_ALL); } for (i = 0; i < ndir; i++) catch_command_errors (directory_command, dirarg[i], 0, RETURN_MASK_ALL); xfree (dirarg); /* APPLE LOCAL: If an architecture has been supplied, process it. FIXME: Note, this is a TOTAL hack. There should be some gdbarch'y type function that processes these options. The odd thing is that you would want the SAME function for all the gdbarch'es that are registered, so it actually lives a little above the gdbarch.... Not sure how to do that. So instead, I just hack... */ #if defined (USE_POSIX_SPAWN) || defined (USE_ARCH_FOR_EXEC) if (initial_arch != NULL) { char *arch_string = NULL; char *osabi_string; #if defined (TARGET_POWERPC) if (strcmp (initial_arch, "ppc") == 0) { arch_string = "powerpc:common"; osabi_string = "Darwin"; } else if (strcmp (initial_arch, "ppc64") == 0) { arch_string = "powerpc:common64"; osabi_string = "Darwin64"; } else warning ("invalid argument \"%s\" for \"--arch\", should be one of " "\"ppc\" or \"ppc64\"\n", initial_arch); #elif defined (TARGET_I386) if (strcmp (initial_arch, "i386") == 0) { arch_string = "i386"; osabi_string = "Darwin"; } else if (strcmp (initial_arch, "x86_64") == 0) { arch_string = "i386:x86-64"; osabi_string = "Darwin64"; } else warning ("invalid argument \"%s\" for \"--arch\", should be one of " "\"i386\" or \"x86_64\"\n", initial_arch); #elif defined (TARGET_ARM) if (strcmp (initial_arch, "arm") == 0) { arch_string = "arm"; osabi_string = "Darwin"; } else if (strcmp (initial_arch, "armv6") == 0) { arch_string = "armv6"; osabi_string = "DarwinV6"; } else warning ("invalid argument \"%s\" for \"--arch\", should be one of " "\"armv\" or \"armv6\"\n", initial_arch); #endif if (arch_string != NULL) { set_architecture_from_string (arch_string); set_osabi_from_string (osabi_string); } } #else warning ("--arch option not supported in this gdb."); #endif /* APPLE LOCAL BEGIN: Set the osabi via option. */ if (osabiarg != NULL) set_osabi_option (osabiarg); /* APPLE LOCAL END */ if (execarg != NULL && symarg != NULL && 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, RETURN_MASK_ALL)) catch_command_errors (symbol_file_add_main, symarg, 0, RETURN_MASK_ALL); } else { if (execarg != NULL) catch_command_errors (exec_file_attach, execarg, !batch, RETURN_MASK_ALL); if (symarg != NULL) catch_command_errors (symbol_file_add_main, symarg, 0, RETURN_MASK_ALL); } /* APPLE LOCAL begin */ if (state_change_hook && symarg != NULL) { state_change_hook (STATE_INFERIOR_LOADED); } /* APPLE LOCAL end */ /* APPLE LOCAL begin */ if (attach_waitfor != NULL) { printf_filtered ("\n"); catch_command_errors (attach_command, attach_waitfor, 0, RETURN_MASK_ALL); } /* After the symbol file has been read, print a newline to get us beyond the copyright line... But errors should still set off the error message with a (single) blank line. */ if (!quiet) printf_filtered ("\n"); error_pre_print = "\n"; quit_pre_print = error_pre_print; warning_pre_print = _("\nwarning: "); if (corearg != NULL) { if (catch_command_errors (core_file_attach, corearg, !batch, RETURN_MASK_ALL) == 0) { /* See if the core file is really a PID. */ /* Be careful, we have quoted the corearg above... */ if (corearg[0] == '"') { int len = strlen (corearg); if (corearg[len - 1] == '"') { corearg[len - 1] = '\0'; corearg += 1; } } if (isdigit (corearg[0])) catch_command_errors (attach_command, corearg, !batch, RETURN_MASK_ALL); } } if (ttyarg != NULL) catch_command_errors (tty_command, ttyarg, !batch, RETURN_MASK_ALL); /* Error messages should no longer be distinguished with extra output. */ error_pre_print = NULL; quit_pre_print = NULL; 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). */ stat (gdbinit, &cwdbuf); if (!inhibit_gdbinit) if (((globalbuf.st_dev != cwdbuf.st_dev) || (globalbuf.st_ino != cwdbuf.st_ino)) && ((homebuf.st_dev != cwdbuf.st_dev) || (homebuf.st_ino != cwdbuf.st_ino))) { /* APPLE LOCAL: fix for CVE-2005-1705 */ if (cwdbuf.st_uid == getuid ()) catch_command_errors (source_file, gdbinit, 0, RETURN_MASK_ALL); } /* These need to be set this late in the initialization to ensure that they are defined for the current environment. They define the radix variables needed by a save-breakpoints file to preserve the radix across the breakpoints restoration assuming they are restored using the -x (-command) command line options. */ set_internalvar (lookup_internalvar ("input_radix"), value_from_longest (builtin_type_int, (LONGEST) input_radix)); set_internalvar (lookup_internalvar ("output_radix"), value_from_longest (builtin_type_int, (LONGEST) output_radix)); for (i = 0; i < ncmd; i++) { #if 0 /* NOTE: cagney/1999-11-03: SET_TOP_LEVEL() was a macro that expanded into a call to setjmp(). */ if (!SET_TOP_LEVEL ()) /* NB: This is #if 0'd out */ { /* NOTE: I am commenting this out, because it is not clear where this feature is used. It is very old and undocumented. ezannoni: 1999-05-04 */ #if 0 if (cmdarg[i][0] == '-' && cmdarg[i][1] == '\0') read_command_file (stdin); else #endif source_file (cmdarg[i], !batch); do_cleanups (ALL_CLEANUPS); } #endif catch_command_errors (source_file, cmdarg[i], !batch, RETURN_MASK_ALL); } xfree (cmdarg); /* Read in the old history after all the command files have been read. */ init_history (); if (batch) { if (attach_flag) /* Either there was a problem executing the command in the batch file aborted early, or the batch file forgot to do an explicit detach. Explicitly detach the inferior ensuring that there are no zombies. */ target_detach (NULL, 0); /* We have hit the end of the batch file. */ exit (0); } /* Do any host- or target-specific hacks. This is used for i960 targets to force the user to set a nindy target and spec its parameters. */ #ifdef BEFORE_MAIN_LOOP_HOOK BEFORE_MAIN_LOOP_HOOK; #endif /* Show time and/or space usage. */ if (display_time) { long init_time = get_run_time () - time_at_startup; printf_unfiltered (_("Startup time: %ld.%06ld\n"), init_time / 1000000, init_time % 1000000); } if (display_space) { #ifdef HAVE_SBRK extern char **environ; char *lim = (char *) sbrk (0); printf_unfiltered (_("Startup size: data size %ld\n"), (long) (lim - (char *) &environ)); #endif } #if 0 /* FIXME: cagney/1999-11-06: The original main loop was like: */ while (1) { if (!SET_TOP_LEVEL ()) { do_cleanups (ALL_CLEANUPS); /* Do complete cleanup */ /* GUIs generally have their own command loop, mainloop, or whatever. This is a good place to gain control because many error conditions will end up here via longjmp(). */ if (deprecated_command_loop_hook) deprecated_command_loop_hook (); else deprecated_command_loop (); quit_command ((char *) 0, instream == stdin); } } /* NOTE: If the command_loop() returned normally, the loop would attempt to exit by calling the function quit_command(). That function would either call exit() or throw an error returning control to SET_TOP_LEVEL. */ /* NOTE: The function do_cleanups() was called once each time round the loop. The usefulness of the call isn't clear. If an error was thrown, everything would have already been cleaned up. If command_loop() returned normally and quit_command() was called, either exit() or error() (again cleaning up) would be called. */ #endif /* NOTE: cagney/1999-11-07: There is probably no reason for not moving this loop and the code found in captured_command_loop() into the command_loop() proper. The main thing holding back that change - SET_TOP_LEVEL() - has been eliminated. */ while (1) { catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL); } /* No exit -- exit is through quit_command. */ }