4092 lines
110 KiB
C
4092 lines
110 KiB
C
/* Top level stuff for GDB, the GNU debugger.
|
||
Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999
|
||
Free Software Foundation, Inc.
|
||
|
||
This file is part of GDB.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 59 Temple Place - Suite 330,
|
||
Boston, MA 02111-1307, USA. */
|
||
|
||
#include "defs.h"
|
||
#include "gdbcmd.h"
|
||
#include "call-cmds.h"
|
||
#include "symtab.h"
|
||
#include "inferior.h"
|
||
#include "signals.h"
|
||
#include "target.h"
|
||
#include "breakpoint.h"
|
||
#include "gdbtypes.h"
|
||
#include "expression.h"
|
||
#include "value.h"
|
||
#include "language.h"
|
||
#include "terminal.h" /* For job_control. */
|
||
#include "annotate.h"
|
||
#include "top.h"
|
||
#include "version.h"
|
||
|
||
/* readline include files */
|
||
#include <readline/readline.h>
|
||
#include <readline/history.h>
|
||
|
||
/* readline defines this. */
|
||
#undef savestring
|
||
|
||
#include <sys/types.h>
|
||
|
||
#include "event-loop.h"
|
||
#include "gdb_string.h"
|
||
#include "gdb_stat.h"
|
||
#include <ctype.h>
|
||
|
||
/* Prototypes for local functions */
|
||
|
||
static void dont_repeat_command PARAMS ((char *, int));
|
||
|
||
static void source_cleanup_lines PARAMS ((PTR));
|
||
|
||
static void user_defined_command PARAMS ((char *, int));
|
||
|
||
static void init_signals PARAMS ((void));
|
||
|
||
#ifdef STOP_SIGNAL
|
||
static void stop_sig PARAMS ((int));
|
||
#endif
|
||
|
||
static char *line_completion_function PARAMS ((char *, int, char *, int));
|
||
|
||
static char *readline_line_completion_function PARAMS ((char *, int));
|
||
|
||
/* NOTE 1999-04-29: this function will be static again, after we make the
|
||
event loop be the default command loop for gdb, and we merge
|
||
event-top.c into this file, top.c */
|
||
/* static */ void command_loop_marker PARAMS ((int));
|
||
|
||
static void while_command PARAMS ((char *, int));
|
||
|
||
static void if_command PARAMS ((char *, int));
|
||
|
||
static struct command_line *
|
||
build_command_line PARAMS ((enum command_control_type, char *));
|
||
|
||
static struct command_line *
|
||
get_command_line PARAMS ((enum command_control_type, char *));
|
||
|
||
static void realloc_body_list PARAMS ((struct command_line *, int));
|
||
|
||
static enum misc_command_type read_next_line PARAMS ((struct command_line **));
|
||
|
||
static enum command_control_type
|
||
recurse_read_control_structure PARAMS ((struct command_line *));
|
||
|
||
static struct cleanup *setup_user_args PARAMS ((char *));
|
||
|
||
static char *locate_arg PARAMS ((char *));
|
||
|
||
static char *insert_args PARAMS ((char *));
|
||
|
||
static void arg_cleanup PARAMS ((void));
|
||
|
||
static void init_main PARAMS ((void));
|
||
|
||
static void init_cmd_lists PARAMS ((void));
|
||
|
||
static void float_handler PARAMS ((int));
|
||
|
||
static void init_signals PARAMS ((void));
|
||
|
||
static void set_verbose PARAMS ((char *, int, struct cmd_list_element *));
|
||
|
||
static void show_history PARAMS ((char *, int));
|
||
|
||
static void set_history PARAMS ((char *, int));
|
||
|
||
static void set_history_size_command PARAMS ((char *, int,
|
||
struct cmd_list_element *));
|
||
|
||
static void show_commands PARAMS ((char *, int));
|
||
|
||
static void echo_command PARAMS ((char *, int));
|
||
|
||
static void pwd_command PARAMS ((char *, int));
|
||
|
||
static void show_version PARAMS ((char *, int));
|
||
|
||
static void document_command PARAMS ((char *, int));
|
||
|
||
static void define_command PARAMS ((char *, int));
|
||
|
||
static void validate_comname PARAMS ((char *));
|
||
|
||
static void help_command PARAMS ((char *, int));
|
||
|
||
static void show_command PARAMS ((char *, int));
|
||
|
||
static void info_command PARAMS ((char *, int));
|
||
|
||
static void complete_command PARAMS ((char *, int));
|
||
|
||
static void do_nothing PARAMS ((int));
|
||
|
||
#ifdef SIGHUP
|
||
/* NOTE 1999-04-29: This function will be static again, once we modify
|
||
gdb to use the event loop as the default command loop and we merge
|
||
event-top.c into this file, top.c */
|
||
/* static */ int quit_cover PARAMS ((PTR));
|
||
|
||
static void disconnect PARAMS ((int));
|
||
#endif
|
||
|
||
static void source_cleanup PARAMS ((FILE *));
|
||
|
||
/* Default command line prompt. This is overriden in some configs. */
|
||
|
||
#ifndef DEFAULT_PROMPT
|
||
#define DEFAULT_PROMPT "(gdb) "
|
||
#endif
|
||
|
||
/* Initialization file name for gdb. This is overridden in some configs. */
|
||
|
||
#ifndef GDBINIT_FILENAME
|
||
#define GDBINIT_FILENAME ".gdbinit"
|
||
#endif
|
||
char gdbinit[] = GDBINIT_FILENAME;
|
||
|
||
int inhibit_gdbinit = 0;
|
||
|
||
/* If nonzero, and GDB has been configured to be able to use windows,
|
||
attempt to open them upon startup. */
|
||
|
||
int use_windows = 1;
|
||
|
||
extern char lang_frame_mismatch_warn[]; /* language.c */
|
||
|
||
/* Flag for whether we want all the "from_tty" gubbish printed. */
|
||
|
||
int caution = 1; /* Default is yes, sigh. */
|
||
|
||
/* Define all cmd_list_elements. */
|
||
|
||
/* Chain containing all defined commands. */
|
||
|
||
struct cmd_list_element *cmdlist;
|
||
|
||
/* Chain containing all defined info subcommands. */
|
||
|
||
struct cmd_list_element *infolist;
|
||
|
||
/* Chain containing all defined enable subcommands. */
|
||
|
||
struct cmd_list_element *enablelist;
|
||
|
||
/* Chain containing all defined disable subcommands. */
|
||
|
||
struct cmd_list_element *disablelist;
|
||
|
||
/* Chain containing all defined toggle subcommands. */
|
||
|
||
struct cmd_list_element *togglelist;
|
||
|
||
/* Chain containing all defined stop subcommands. */
|
||
|
||
struct cmd_list_element *stoplist;
|
||
|
||
/* Chain containing all defined delete subcommands. */
|
||
|
||
struct cmd_list_element *deletelist;
|
||
|
||
/* Chain containing all defined "enable breakpoint" subcommands. */
|
||
|
||
struct cmd_list_element *enablebreaklist;
|
||
|
||
/* Chain containing all defined set subcommands */
|
||
|
||
struct cmd_list_element *setlist;
|
||
|
||
/* Chain containing all defined unset subcommands */
|
||
|
||
struct cmd_list_element *unsetlist;
|
||
|
||
/* Chain containing all defined show subcommands. */
|
||
|
||
struct cmd_list_element *showlist;
|
||
|
||
/* Chain containing all defined \"set history\". */
|
||
|
||
struct cmd_list_element *sethistlist;
|
||
|
||
/* Chain containing all defined \"show history\". */
|
||
|
||
struct cmd_list_element *showhistlist;
|
||
|
||
/* Chain containing all defined \"unset history\". */
|
||
|
||
struct cmd_list_element *unsethistlist;
|
||
|
||
/* Chain containing all defined maintenance subcommands. */
|
||
|
||
struct cmd_list_element *maintenancelist;
|
||
|
||
/* Chain containing all defined "maintenance info" subcommands. */
|
||
|
||
struct cmd_list_element *maintenanceinfolist;
|
||
|
||
/* Chain containing all defined "maintenance print" subcommands. */
|
||
|
||
struct cmd_list_element *maintenanceprintlist;
|
||
|
||
struct cmd_list_element *setprintlist;
|
||
|
||
struct cmd_list_element *showprintlist;
|
||
|
||
struct cmd_list_element *setchecklist;
|
||
|
||
struct cmd_list_element *showchecklist;
|
||
|
||
/* stdio stream that command input is being read from. Set to stdin normally.
|
||
Set by source_command to the file we are sourcing. Set to NULL if we are
|
||
executing a user-defined command or interacting via a GUI. */
|
||
|
||
FILE *instream;
|
||
|
||
/* Current working directory. */
|
||
|
||
char *current_directory;
|
||
|
||
/* The directory name is actually stored here (usually). */
|
||
char gdb_dirbuf[1024];
|
||
|
||
/* Function to call before reading a command, if nonzero.
|
||
The function receives two args: an input stream,
|
||
and a prompt string. */
|
||
|
||
void (*window_hook) PARAMS ((FILE *, char *));
|
||
|
||
int epoch_interface;
|
||
int xgdb_verbose;
|
||
|
||
/* gdb prints this when reading a command interactively */
|
||
static char *gdb_prompt_string; /* the global prompt string */
|
||
extern char *get_prompt PARAMS ((void)); /* access function for prompt string */
|
||
|
||
/* Buffer used for reading command lines, and the size
|
||
allocated for it so far. */
|
||
|
||
char *line;
|
||
int linesize = 100;
|
||
|
||
/* Nonzero if the current command is modified by "server ". This
|
||
affects things like recording into the command history, comamnds
|
||
repeating on RETURN, etc. This is so a user interface (emacs, GUI,
|
||
whatever) can issue its own commands and also send along commands
|
||
from the user, and have the user not notice that the user interface
|
||
is issuing commands too. */
|
||
int server_command;
|
||
|
||
/* Baud rate specified for talking to serial target systems. Default
|
||
is left as -1, so targets can choose their own defaults. */
|
||
/* FIXME: This means that "show remotebaud" and gr_files_info can print -1
|
||
or (unsigned int)-1. This is a Bad User Interface. */
|
||
|
||
int baud_rate = -1;
|
||
|
||
/* Timeout limit for response from target. */
|
||
|
||
int remote_timeout = 20; /* Set default to 20 */
|
||
|
||
/* Non-zero tells remote* modules to output debugging info. */
|
||
|
||
int remote_debug = 0;
|
||
|
||
/* Non-zero means the target is running. Note: this is different from
|
||
saying that there is an active target and we are stopped at a
|
||
breakpoint, for instance. This is a real indicator whether the
|
||
target is off and running, which gdb is doing something else. */
|
||
int target_executing = 0;
|
||
|
||
/* Level of control structure. */
|
||
static int control_level;
|
||
|
||
/* Structure for arguments to user defined functions. */
|
||
#define MAXUSERARGS 10
|
||
struct user_args
|
||
{
|
||
struct user_args *next;
|
||
struct
|
||
{
|
||
char *arg;
|
||
int len;
|
||
}
|
||
a[MAXUSERARGS];
|
||
int count;
|
||
}
|
||
*user_args;
|
||
|
||
/* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */
|
||
|
||
#ifndef STOP_SIGNAL
|
||
#ifdef SIGTSTP
|
||
#define STOP_SIGNAL SIGTSTP
|
||
static void stop_sig PARAMS ((int));
|
||
#endif
|
||
#endif
|
||
|
||
/* Some System V have job control but not sigsetmask(). */
|
||
#if !defined (HAVE_SIGSETMASK)
|
||
#if !defined (USG)
|
||
#define HAVE_SIGSETMASK 1
|
||
#else
|
||
#define HAVE_SIGSETMASK 0
|
||
#endif
|
||
#endif
|
||
|
||
#if 0 == (HAVE_SIGSETMASK)
|
||
#define sigsetmask(n)
|
||
#endif
|
||
|
||
/* Hooks for alternate command interfaces. */
|
||
|
||
/* Called after most modules have been initialized, but before taking users
|
||
command file. */
|
||
|
||
void (*init_ui_hook) PARAMS ((char *argv0));
|
||
|
||
/* This hook is called from within gdb's many mini-event loops which could
|
||
steal control from a real user interface's event loop. It returns
|
||
non-zero if the user is requesting a detach, zero otherwise. */
|
||
|
||
int (*ui_loop_hook) PARAMS ((int));
|
||
|
||
/* Called instead of command_loop at top level. Can be invoked via
|
||
return_to_top_level. */
|
||
|
||
void (*command_loop_hook) PARAMS ((void));
|
||
|
||
|
||
/* Called instead of fputs for all output. */
|
||
|
||
void (*fputs_unfiltered_hook) PARAMS ((const char *linebuffer, GDB_FILE * stream));
|
||
|
||
/* Called from print_frame_info to list the line we stopped in. */
|
||
|
||
void (*print_frame_info_listing_hook) PARAMS ((struct symtab * s, int line,
|
||
int stopline, int noerror));
|
||
/* Replaces most of query. */
|
||
|
||
int (*query_hook) PARAMS ((const char *, va_list));
|
||
|
||
/* Replaces most of warning. */
|
||
|
||
void (*warning_hook) PARAMS ((const char *, va_list));
|
||
|
||
/* Called from gdb_flush to flush output. */
|
||
|
||
void (*flush_hook) PARAMS ((GDB_FILE * stream));
|
||
|
||
/* These three functions support getting lines of text from the user. They
|
||
are used in sequence. First readline_begin_hook is called with a text
|
||
string that might be (for example) a message for the user to type in a
|
||
sequence of commands to be executed at a breakpoint. If this function
|
||
calls back to a GUI, it might take this opportunity to pop up a text
|
||
interaction window with this message. Next, readline_hook is called
|
||
with a prompt that is emitted prior to collecting the user input.
|
||
It can be called multiple times. Finally, readline_end_hook is called
|
||
to notify the GUI that we are done with the interaction window and it
|
||
can close it. */
|
||
|
||
void (*readline_begin_hook) PARAMS ((char *,...));
|
||
char *(*readline_hook) PARAMS ((char *));
|
||
void (*readline_end_hook) PARAMS ((void));
|
||
|
||
/* Called as appropriate to notify the interface of the specified breakpoint
|
||
conditions. */
|
||
|
||
void (*create_breakpoint_hook) PARAMS ((struct breakpoint * bpt));
|
||
void (*delete_breakpoint_hook) PARAMS ((struct breakpoint * bpt));
|
||
void (*modify_breakpoint_hook) PARAMS ((struct breakpoint * bpt));
|
||
|
||
/* Called during long calculations to allow GUI to repair window damage, and to
|
||
check for stop buttons, etc... */
|
||
|
||
void (*interactive_hook) PARAMS ((void));
|
||
|
||
/* Called when the registers have changed, as a hint to a GUI
|
||
to minimize window update. */
|
||
|
||
void (*registers_changed_hook) PARAMS ((void));
|
||
|
||
/* Tell the GUI someone changed the register REGNO. -1 means
|
||
that the caller does not know which register changed or
|
||
that several registers have changed (see value_assign). */
|
||
void (*register_changed_hook) PARAMS ((int regno));
|
||
|
||
/* Tell the GUI someone changed LEN bytes of memory at ADDR */
|
||
void (*memory_changed_hook) PARAMS ((CORE_ADDR addr, int len));
|
||
|
||
/* Called when going to wait for the target. Usually allows the GUI to run
|
||
while waiting for target events. */
|
||
|
||
int (*target_wait_hook) PARAMS ((int pid, struct target_waitstatus * status));
|
||
|
||
/* Used by UI as a wrapper around command execution. May do various things
|
||
like enabling/disabling buttons, etc... */
|
||
|
||
void (*call_command_hook) PARAMS ((struct cmd_list_element * c, char *cmd,
|
||
int from_tty));
|
||
|
||
/* Called after a `set' command has finished. Is only run if the
|
||
`set' command succeeded. */
|
||
|
||
void (*set_hook) PARAMS ((struct cmd_list_element *c));
|
||
|
||
/* Called when the current thread changes. Argument is thread id. */
|
||
|
||
void (*context_hook) PARAMS ((int id));
|
||
|
||
/* Takes control from error (). Typically used to prevent longjmps out of the
|
||
middle of the GUI. Usually used in conjunction with a catch routine. */
|
||
|
||
NORETURN void (*error_hook)
|
||
PARAMS ((void)) ATTR_NORETURN;
|
||
|
||
|
||
/* Where to go for return_to_top_level (RETURN_ERROR). */
|
||
SIGJMP_BUF error_return;
|
||
/* Where to go for return_to_top_level (RETURN_QUIT). */
|
||
SIGJMP_BUF quit_return;
|
||
|
||
/* Return for reason REASON. This generally gets back to the command
|
||
loop, but can be caught via catch_errors. */
|
||
|
||
NORETURN void
|
||
return_to_top_level (reason)
|
||
enum return_reason reason;
|
||
{
|
||
quit_flag = 0;
|
||
immediate_quit = 0;
|
||
|
||
/* Perhaps it would be cleaner to do this via the cleanup chain (not sure
|
||
I can think of a reason why that is vital, though). */
|
||
bpstat_clear_actions (stop_bpstat); /* Clear queued breakpoint commands */
|
||
|
||
disable_current_display ();
|
||
do_cleanups (ALL_CLEANUPS);
|
||
if (async_p && target_has_async)
|
||
do_exec_cleanups (ALL_CLEANUPS);
|
||
|
||
if (annotation_level > 1)
|
||
switch (reason)
|
||
{
|
||
case RETURN_QUIT:
|
||
annotate_quit ();
|
||
break;
|
||
case RETURN_ERROR:
|
||
annotate_error ();
|
||
break;
|
||
}
|
||
|
||
(NORETURN void) SIGLONGJMP
|
||
(reason == RETURN_ERROR ? error_return : quit_return, 1);
|
||
}
|
||
|
||
/* Call FUNC with arg ARGS, catching any errors. If there is no
|
||
error, return the value returned by FUNC. If there is an error,
|
||
print ERRSTRING, print the specific error message, then return
|
||
zero.
|
||
|
||
Must not be called with immediate_quit in effect (bad things might
|
||
happen, say we got a signal in the middle of a memcpy to quit_return).
|
||
This is an OK restriction; with very few exceptions immediate_quit can
|
||
be replaced by judicious use of QUIT.
|
||
|
||
MASK specifies what to catch; it is normally set to
|
||
RETURN_MASK_ALL, if for no other reason than that the code which
|
||
calls catch_errors might not be set up to deal with a quit which
|
||
isn't caught. But if the code can deal with it, it generally
|
||
should be RETURN_MASK_ERROR, unless for some reason it is more
|
||
useful to abort only the portion of the operation inside the
|
||
catch_errors. Note that quit should return to the command line
|
||
fairly quickly, even if some further processing is being done. */
|
||
|
||
int
|
||
catch_errors (func, args, errstring, mask)
|
||
catch_errors_ftype *func;
|
||
PTR args;
|
||
char *errstring;
|
||
return_mask mask;
|
||
{
|
||
SIGJMP_BUF saved_error;
|
||
SIGJMP_BUF saved_quit;
|
||
SIGJMP_BUF tmp_jmp;
|
||
int val;
|
||
struct cleanup *saved_cleanup_chain;
|
||
char *saved_error_pre_print;
|
||
char *saved_quit_pre_print;
|
||
|
||
saved_cleanup_chain = save_cleanups ();
|
||
saved_error_pre_print = error_pre_print;
|
||
saved_quit_pre_print = quit_pre_print;
|
||
|
||
if (mask & RETURN_MASK_ERROR)
|
||
{
|
||
memcpy ((char *) saved_error, (char *) error_return, sizeof (SIGJMP_BUF));
|
||
error_pre_print = errstring;
|
||
}
|
||
if (mask & RETURN_MASK_QUIT)
|
||
{
|
||
memcpy (saved_quit, quit_return, sizeof (SIGJMP_BUF));
|
||
quit_pre_print = errstring;
|
||
}
|
||
|
||
if (SIGSETJMP (tmp_jmp) == 0)
|
||
{
|
||
if (mask & RETURN_MASK_ERROR)
|
||
memcpy (error_return, tmp_jmp, sizeof (SIGJMP_BUF));
|
||
if (mask & RETURN_MASK_QUIT)
|
||
memcpy (quit_return, tmp_jmp, sizeof (SIGJMP_BUF));
|
||
val = (*func) (args);
|
||
}
|
||
else
|
||
val = 0;
|
||
|
||
restore_cleanups (saved_cleanup_chain);
|
||
|
||
if (mask & RETURN_MASK_ERROR)
|
||
{
|
||
memcpy (error_return, saved_error, sizeof (SIGJMP_BUF));
|
||
error_pre_print = saved_error_pre_print;
|
||
}
|
||
if (mask & RETURN_MASK_QUIT)
|
||
{
|
||
memcpy (quit_return, saved_quit, sizeof (SIGJMP_BUF));
|
||
quit_pre_print = saved_quit_pre_print;
|
||
}
|
||
return val;
|
||
}
|
||
|
||
/* Handler for SIGHUP. */
|
||
|
||
#ifdef SIGHUP
|
||
static void
|
||
disconnect (signo)
|
||
int signo;
|
||
{
|
||
catch_errors (quit_cover, NULL,
|
||
"Could not kill the program being debugged", RETURN_MASK_ALL);
|
||
signal (SIGHUP, SIG_DFL);
|
||
kill (getpid (), SIGHUP);
|
||
}
|
||
|
||
/* Just a little helper function for disconnect(). */
|
||
|
||
/* NOTE 1999-04-29: This function will be static again, once we modify
|
||
gdb to use the event loop as the default command loop and we merge
|
||
event-top.c into this file, top.c */
|
||
/* static */ int
|
||
quit_cover (s)
|
||
PTR s;
|
||
{
|
||
caution = 0; /* Throw caution to the wind -- we're exiting.
|
||
This prevents asking the user dumb questions. */
|
||
quit_command ((char *) 0, 0);
|
||
return 0;
|
||
}
|
||
#endif /* defined SIGHUP */
|
||
|
||
/* Line number we are currently in in a file which is being sourced. */
|
||
/* NOTE 1999-04-29: This variable will be static again, once we modify
|
||
gdb to use the event loop as the default command loop and we merge
|
||
event-top.c into this file, top.c */
|
||
/* static */ int source_line_number;
|
||
|
||
/* Name of the file we are sourcing. */
|
||
/* NOTE 1999-04-29: This variable will be static again, once we modify
|
||
gdb to use the event loop as the default command loop and we merge
|
||
event-top.c into this file, top.c */
|
||
/* static */ char *source_file_name;
|
||
|
||
/* Buffer containing the error_pre_print used by the source stuff.
|
||
Malloc'd. */
|
||
/* NOTE 1999-04-29: This variable will be static again, once we modify
|
||
gdb to use the event loop as the default command loop and we merge
|
||
event-top.c into this file, top.c */
|
||
/* static */ char *source_error;
|
||
static int source_error_allocated;
|
||
|
||
/* Something to glom on to the start of error_pre_print if source_file_name
|
||
is set. */
|
||
/* NOTE 1999-04-29: This variable will be static again, once we modify
|
||
gdb to use the event loop as the default command loop and we merge
|
||
event-top.c into this file, top.c */
|
||
/* static */ char *source_pre_error;
|
||
|
||
/* Clean up on error during a "source" command (or execution of a
|
||
user-defined command). */
|
||
|
||
static void
|
||
source_cleanup (stream)
|
||
FILE *stream;
|
||
{
|
||
/* Restore the previous input stream. */
|
||
instream = stream;
|
||
}
|
||
|
||
/* Read commands from STREAM. */
|
||
void
|
||
read_command_file (stream)
|
||
FILE *stream;
|
||
{
|
||
struct cleanup *cleanups;
|
||
|
||
cleanups = make_cleanup ((make_cleanup_func) source_cleanup, instream);
|
||
instream = stream;
|
||
command_loop ();
|
||
do_cleanups (cleanups);
|
||
}
|
||
|
||
extern void init_proc PARAMS ((void));
|
||
|
||
void (*pre_init_ui_hook) PARAMS ((void));
|
||
|
||
void
|
||
gdb_init (argv0)
|
||
char *argv0;
|
||
{
|
||
if (pre_init_ui_hook)
|
||
pre_init_ui_hook ();
|
||
|
||
/* Run the init function of each source file */
|
||
|
||
getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
|
||
current_directory = gdb_dirbuf;
|
||
|
||
#ifdef __MSDOS__
|
||
/* Make sure we return to the original directory upon exit, come
|
||
what may, since the OS doesn't do that for us. */
|
||
make_final_cleanup ((make_cleanup_func) chdir, strsave (current_directory));
|
||
#endif
|
||
|
||
init_cmd_lists (); /* This needs to be done first */
|
||
initialize_targets (); /* Setup target_terminal macros for utils.c */
|
||
initialize_utils (); /* Make errors and warnings possible */
|
||
initialize_all_files ();
|
||
init_main (); /* But that omits this file! Do it now */
|
||
|
||
/* The signal handling mechanism is different depending whether or
|
||
not the async version is run. NOTE: in the future we plan to make
|
||
the event loop be the default engine of gdb, and this difference
|
||
will disappear. */
|
||
if (async_p)
|
||
async_init_signals ();
|
||
else
|
||
init_signals ();
|
||
|
||
/* We need a default language for parsing expressions, so simple things like
|
||
"set width 0" won't fail if no language is explicitly set in a config file
|
||
or implicitly set by reading an executable during startup. */
|
||
set_language (language_c);
|
||
expected_language = current_language; /* don't warn about the change. */
|
||
|
||
/* All the interpreters should have had a look at things by now.
|
||
Initialize the selected interpreter. */
|
||
if (init_ui_hook)
|
||
init_ui_hook (argv0);
|
||
}
|
||
|
||
/* Allocate, initialize a new command line structure for one of the
|
||
control commands (if/while). */
|
||
|
||
static struct command_line *
|
||
build_command_line (type, args)
|
||
enum command_control_type type;
|
||
char *args;
|
||
{
|
||
struct command_line *cmd;
|
||
|
||
if (args == NULL)
|
||
error ("if/while commands require arguments.\n");
|
||
|
||
cmd = (struct command_line *) xmalloc (sizeof (struct command_line));
|
||
cmd->next = NULL;
|
||
cmd->control_type = type;
|
||
|
||
cmd->body_count = 1;
|
||
cmd->body_list
|
||
= (struct command_line **) xmalloc (sizeof (struct command_line *)
|
||
* cmd->body_count);
|
||
memset (cmd->body_list, 0, sizeof (struct command_line *) * cmd->body_count);
|
||
cmd->line = savestring (args, strlen (args));
|
||
return cmd;
|
||
}
|
||
|
||
/* Build and return a new command structure for the control commands
|
||
such as "if" and "while". */
|
||
|
||
static struct command_line *
|
||
get_command_line (type, arg)
|
||
enum command_control_type type;
|
||
char *arg;
|
||
{
|
||
struct command_line *cmd;
|
||
struct cleanup *old_chain = NULL;
|
||
|
||
/* Allocate and build a new command line structure. */
|
||
cmd = build_command_line (type, arg);
|
||
|
||
old_chain = make_cleanup ((make_cleanup_func) free_command_lines, &cmd);
|
||
|
||
/* Read in the body of this command. */
|
||
if (recurse_read_control_structure (cmd) == invalid_control)
|
||
{
|
||
warning ("error reading in control structure\n");
|
||
do_cleanups (old_chain);
|
||
return NULL;
|
||
}
|
||
|
||
discard_cleanups (old_chain);
|
||
return cmd;
|
||
}
|
||
|
||
/* Recursively print a command (including full control structures). */
|
||
void
|
||
print_command_line (cmd, depth, stream)
|
||
struct command_line *cmd;
|
||
unsigned int depth;
|
||
GDB_FILE *stream;
|
||
{
|
||
unsigned int i;
|
||
|
||
if (depth)
|
||
{
|
||
for (i = 0; i < depth; i++)
|
||
fputs_filtered (" ", stream);
|
||
}
|
||
|
||
/* A simple command, print it and return. */
|
||
if (cmd->control_type == simple_control)
|
||
{
|
||
fputs_filtered (cmd->line, stream);
|
||
fputs_filtered ("\n", stream);
|
||
return;
|
||
}
|
||
|
||
/* loop_continue to jump to the start of a while loop, print it
|
||
and return. */
|
||
if (cmd->control_type == continue_control)
|
||
{
|
||
fputs_filtered ("loop_continue\n", stream);
|
||
return;
|
||
}
|
||
|
||
/* loop_break to break out of a while loop, print it and return. */
|
||
if (cmd->control_type == break_control)
|
||
{
|
||
fputs_filtered ("loop_break\n", stream);
|
||
return;
|
||
}
|
||
|
||
/* A while command. Recursively print its subcommands before returning. */
|
||
if (cmd->control_type == while_control)
|
||
{
|
||
struct command_line *list;
|
||
fputs_filtered ("while ", stream);
|
||
fputs_filtered (cmd->line, stream);
|
||
fputs_filtered ("\n", stream);
|
||
list = *cmd->body_list;
|
||
while (list)
|
||
{
|
||
print_command_line (list, depth + 1, stream);
|
||
list = list->next;
|
||
}
|
||
}
|
||
|
||
/* An if command. Recursively print both arms before returning. */
|
||
if (cmd->control_type == if_control)
|
||
{
|
||
fputs_filtered ("if ", stream);
|
||
fputs_filtered (cmd->line, stream);
|
||
fputs_filtered ("\n", stream);
|
||
/* The true arm. */
|
||
print_command_line (cmd->body_list[0], depth + 1, stream);
|
||
|
||
/* Show the false arm if it exists. */
|
||
if (cmd->body_count == 2)
|
||
{
|
||
if (depth)
|
||
{
|
||
for (i = 0; i < depth; i++)
|
||
fputs_filtered (" ", stream);
|
||
}
|
||
fputs_filtered ("else\n", stream);
|
||
print_command_line (cmd->body_list[1], depth + 1, stream);
|
||
}
|
||
if (depth)
|
||
{
|
||
for (i = 0; i < depth; i++)
|
||
fputs_filtered (" ", stream);
|
||
}
|
||
fputs_filtered ("end\n", stream);
|
||
}
|
||
}
|
||
|
||
/* Execute the command in CMD. */
|
||
|
||
enum command_control_type
|
||
execute_control_command (cmd)
|
||
struct command_line *cmd;
|
||
{
|
||
struct expression *expr;
|
||
struct command_line *current;
|
||
struct cleanup *old_chain = 0;
|
||
value_ptr val;
|
||
value_ptr val_mark;
|
||
int loop;
|
||
enum command_control_type ret;
|
||
char *new_line;
|
||
|
||
switch (cmd->control_type)
|
||
{
|
||
case simple_control:
|
||
/* A simple command, execute it and return. */
|
||
new_line = insert_args (cmd->line);
|
||
if (!new_line)
|
||
return invalid_control;
|
||
old_chain = make_cleanup ((make_cleanup_func) free_current_contents,
|
||
&new_line);
|
||
execute_command (new_line, 0);
|
||
ret = cmd->control_type;
|
||
break;
|
||
|
||
case continue_control:
|
||
case break_control:
|
||
/* Return for "continue", and "break" so we can either
|
||
continue the loop at the top, or break out. */
|
||
ret = cmd->control_type;
|
||
break;
|
||
|
||
case while_control:
|
||
{
|
||
/* Parse the loop control expression for the while statement. */
|
||
new_line = insert_args (cmd->line);
|
||
if (!new_line)
|
||
return invalid_control;
|
||
old_chain = make_cleanup ((make_cleanup_func) free_current_contents,
|
||
&new_line);
|
||
expr = parse_expression (new_line);
|
||
make_cleanup ((make_cleanup_func) free_current_contents, &expr);
|
||
|
||
ret = simple_control;
|
||
loop = 1;
|
||
|
||
/* Keep iterating so long as the expression is true. */
|
||
while (loop == 1)
|
||
{
|
||
int cond_result;
|
||
|
||
QUIT;
|
||
|
||
/* Evaluate the expression. */
|
||
val_mark = value_mark ();
|
||
val = evaluate_expression (expr);
|
||
cond_result = value_true (val);
|
||
value_free_to_mark (val_mark);
|
||
|
||
/* If the value is false, then break out of the loop. */
|
||
if (!cond_result)
|
||
break;
|
||
|
||
/* Execute the body of the while statement. */
|
||
current = *cmd->body_list;
|
||
while (current)
|
||
{
|
||
ret = execute_control_command (current);
|
||
|
||
/* If we got an error, or a "break" command, then stop
|
||
looping. */
|
||
if (ret == invalid_control || ret == break_control)
|
||
{
|
||
loop = 0;
|
||
break;
|
||
}
|
||
|
||
/* If we got a "continue" command, then restart the loop
|
||
at this point. */
|
||
if (ret == continue_control)
|
||
break;
|
||
|
||
/* Get the next statement. */
|
||
current = current->next;
|
||
}
|
||
}
|
||
|
||
/* Reset RET so that we don't recurse the break all the way down. */
|
||
if (ret == break_control)
|
||
ret = simple_control;
|
||
|
||
break;
|
||
}
|
||
|
||
case if_control:
|
||
{
|
||
new_line = insert_args (cmd->line);
|
||
if (!new_line)
|
||
return invalid_control;
|
||
old_chain = make_cleanup ((make_cleanup_func) free_current_contents,
|
||
&new_line);
|
||
/* Parse the conditional for the if statement. */
|
||
expr = parse_expression (new_line);
|
||
make_cleanup ((make_cleanup_func) free_current_contents, &expr);
|
||
|
||
current = NULL;
|
||
ret = simple_control;
|
||
|
||
/* Evaluate the conditional. */
|
||
val_mark = value_mark ();
|
||
val = evaluate_expression (expr);
|
||
|
||
/* Choose which arm to take commands from based on the value of the
|
||
conditional expression. */
|
||
if (value_true (val))
|
||
current = *cmd->body_list;
|
||
else if (cmd->body_count == 2)
|
||
current = *(cmd->body_list + 1);
|
||
value_free_to_mark (val_mark);
|
||
|
||
/* Execute commands in the given arm. */
|
||
while (current)
|
||
{
|
||
ret = execute_control_command (current);
|
||
|
||
/* If we got an error, get out. */
|
||
if (ret != simple_control)
|
||
break;
|
||
|
||
/* Get the next statement in the body. */
|
||
current = current->next;
|
||
}
|
||
|
||
break;
|
||
}
|
||
|
||
default:
|
||
warning ("Invalid control type in command structure.");
|
||
return invalid_control;
|
||
}
|
||
|
||
if (old_chain)
|
||
do_cleanups (old_chain);
|
||
|
||
return ret;
|
||
}
|
||
|
||
/* "while" command support. Executes a body of statements while the
|
||
loop condition is nonzero. */
|
||
|
||
static void
|
||
while_command (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
struct command_line *command = NULL;
|
||
|
||
control_level = 1;
|
||
command = get_command_line (while_control, arg);
|
||
|
||
if (command == NULL)
|
||
return;
|
||
|
||
execute_control_command (command);
|
||
free_command_lines (&command);
|
||
}
|
||
|
||
/* "if" command support. Execute either the true or false arm depending
|
||
on the value of the if conditional. */
|
||
|
||
static void
|
||
if_command (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
struct command_line *command = NULL;
|
||
|
||
control_level = 1;
|
||
command = get_command_line (if_control, arg);
|
||
|
||
if (command == NULL)
|
||
return;
|
||
|
||
execute_control_command (command);
|
||
free_command_lines (&command);
|
||
}
|
||
|
||
/* Cleanup */
|
||
static void
|
||
arg_cleanup ()
|
||
{
|
||
struct user_args *oargs = user_args;
|
||
if (!user_args)
|
||
internal_error ("Internal error, arg_cleanup called with no user args.\n");
|
||
|
||
user_args = user_args->next;
|
||
free (oargs);
|
||
}
|
||
|
||
/* Bind the incomming arguments for a user defined command to
|
||
$arg0, $arg1 ... $argMAXUSERARGS. */
|
||
|
||
static struct cleanup *
|
||
setup_user_args (p)
|
||
char *p;
|
||
{
|
||
struct user_args *args;
|
||
struct cleanup *old_chain;
|
||
unsigned int arg_count = 0;
|
||
|
||
args = (struct user_args *) xmalloc (sizeof (struct user_args));
|
||
memset (args, 0, sizeof (struct user_args));
|
||
|
||
args->next = user_args;
|
||
user_args = args;
|
||
|
||
old_chain = make_cleanup ((make_cleanup_func) arg_cleanup, 0);
|
||
|
||
if (p == NULL)
|
||
return old_chain;
|
||
|
||
while (*p)
|
||
{
|
||
char *start_arg;
|
||
int squote = 0;
|
||
int dquote = 0;
|
||
int bsquote = 0;
|
||
|
||
if (arg_count >= MAXUSERARGS)
|
||
{
|
||
error ("user defined function may only have %d arguments.\n",
|
||
MAXUSERARGS);
|
||
return old_chain;
|
||
}
|
||
|
||
/* Strip whitespace. */
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
|
||
/* P now points to an argument. */
|
||
start_arg = p;
|
||
user_args->a[arg_count].arg = p;
|
||
|
||
/* Get to the end of this argument. */
|
||
while (*p)
|
||
{
|
||
if (((*p == ' ' || *p == '\t')) && !squote && !dquote && !bsquote)
|
||
break;
|
||
else
|
||
{
|
||
if (bsquote)
|
||
bsquote = 0;
|
||
else if (*p == '\\')
|
||
bsquote = 1;
|
||
else if (squote)
|
||
{
|
||
if (*p == '\'')
|
||
squote = 0;
|
||
}
|
||
else if (dquote)
|
||
{
|
||
if (*p == '"')
|
||
dquote = 0;
|
||
}
|
||
else
|
||
{
|
||
if (*p == '\'')
|
||
squote = 1;
|
||
else if (*p == '"')
|
||
dquote = 1;
|
||
}
|
||
p++;
|
||
}
|
||
}
|
||
|
||
user_args->a[arg_count].len = p - start_arg;
|
||
arg_count++;
|
||
user_args->count++;
|
||
}
|
||
return old_chain;
|
||
}
|
||
|
||
/* Given character string P, return a point to the first argument ($arg),
|
||
or NULL if P contains no arguments. */
|
||
|
||
static char *
|
||
locate_arg (p)
|
||
char *p;
|
||
{
|
||
while ((p = strchr (p, '$')))
|
||
{
|
||
if (strncmp (p, "$arg", 4) == 0 && isdigit (p[4]))
|
||
return p;
|
||
p++;
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
/* Insert the user defined arguments stored in user_arg into the $arg
|
||
arguments found in line, with the updated copy being placed into nline. */
|
||
|
||
static char *
|
||
insert_args (line)
|
||
char *line;
|
||
{
|
||
char *p, *save_line, *new_line;
|
||
unsigned len, i;
|
||
|
||
/* First we need to know how much memory to allocate for the new line. */
|
||
save_line = line;
|
||
len = 0;
|
||
while ((p = locate_arg (line)))
|
||
{
|
||
len += p - line;
|
||
i = p[4] - '0';
|
||
|
||
if (i >= user_args->count)
|
||
{
|
||
error ("Missing argument %d in user function.\n", i);
|
||
return NULL;
|
||
}
|
||
len += user_args->a[i].len;
|
||
line = p + 5;
|
||
}
|
||
|
||
/* Don't forget the tail. */
|
||
len += strlen (line);
|
||
|
||
/* Allocate space for the new line and fill it in. */
|
||
new_line = (char *) xmalloc (len + 1);
|
||
if (new_line == NULL)
|
||
return NULL;
|
||
|
||
/* Restore pointer to beginning of old line. */
|
||
line = save_line;
|
||
|
||
/* Save pointer to beginning of new line. */
|
||
save_line = new_line;
|
||
|
||
while ((p = locate_arg (line)))
|
||
{
|
||
int i, len;
|
||
|
||
memcpy (new_line, line, p - line);
|
||
new_line += p - line;
|
||
i = p[4] - '0';
|
||
|
||
len = user_args->a[i].len;
|
||
if (len)
|
||
{
|
||
memcpy (new_line, user_args->a[i].arg, len);
|
||
new_line += len;
|
||
}
|
||
line = p + 5;
|
||
}
|
||
/* Don't forget the tail. */
|
||
strcpy (new_line, line);
|
||
|
||
/* Return a pointer to the beginning of the new line. */
|
||
return save_line;
|
||
}
|
||
|
||
void
|
||
execute_user_command (c, args)
|
||
struct cmd_list_element *c;
|
||
char *args;
|
||
{
|
||
register struct command_line *cmdlines;
|
||
struct cleanup *old_chain;
|
||
enum command_control_type ret;
|
||
|
||
old_chain = setup_user_args (args);
|
||
|
||
cmdlines = c->user_commands;
|
||
if (cmdlines == 0)
|
||
/* Null command */
|
||
return;
|
||
|
||
/* Set the instream to 0, indicating execution of a
|
||
user-defined function. */
|
||
old_chain = make_cleanup ((make_cleanup_func) source_cleanup, instream);
|
||
instream = (FILE *) 0;
|
||
while (cmdlines)
|
||
{
|
||
ret = execute_control_command (cmdlines);
|
||
if (ret != simple_control && ret != break_control)
|
||
{
|
||
warning ("Error in control structure.\n");
|
||
break;
|
||
}
|
||
cmdlines = cmdlines->next;
|
||
}
|
||
do_cleanups (old_chain);
|
||
}
|
||
|
||
/* Execute the line P as a command.
|
||
Pass FROM_TTY as second argument to the defining function. */
|
||
|
||
void
|
||
execute_command (p, from_tty)
|
||
char *p;
|
||
int from_tty;
|
||
{
|
||
register struct cmd_list_element *c;
|
||
register enum language flang;
|
||
static int warned = 0;
|
||
/* FIXME: These should really be in an appropriate header file */
|
||
extern void serial_log_command PARAMS ((const char *));
|
||
|
||
free_all_values ();
|
||
|
||
/* Force cleanup of any alloca areas if using C alloca instead of
|
||
a builtin alloca. */
|
||
alloca (0);
|
||
|
||
/* This can happen when command_line_input hits end of file. */
|
||
if (p == NULL)
|
||
return;
|
||
|
||
serial_log_command (p);
|
||
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
if (*p)
|
||
{
|
||
char *arg;
|
||
|
||
c = lookup_cmd (&p, cmdlist, "", 0, 1);
|
||
|
||
/* If the target is running, we allow only a limited set of
|
||
commands. */
|
||
if (async_p && target_has_async && target_executing)
|
||
if (!strcmp (c->name, "help")
|
||
&& !strcmp (c->name, "pwd")
|
||
&& !strcmp (c->name, "show")
|
||
&& !strcmp (c->name, "stop"))
|
||
error ("Cannot execute this command while the target is running.");
|
||
|
||
/* Pass null arg rather than an empty one. */
|
||
arg = *p ? p : 0;
|
||
|
||
/* Clear off trailing whitespace, except for set and complete command. */
|
||
if (arg && c->type != set_cmd && c->function.cfunc != complete_command)
|
||
{
|
||
p = arg + strlen (arg) - 1;
|
||
while (p >= arg && (*p == ' ' || *p == '\t'))
|
||
p--;
|
||
*(p + 1) = '\0';
|
||
}
|
||
|
||
/* If this command has been hooked, run the hook first. */
|
||
if (c->hook)
|
||
execute_user_command (c->hook, (char *) 0);
|
||
|
||
if (c->class == class_user)
|
||
execute_user_command (c, arg);
|
||
else if (c->type == set_cmd || c->type == show_cmd)
|
||
do_setshow_command (arg, from_tty & caution, c);
|
||
else if (c->function.cfunc == NO_FUNCTION)
|
||
error ("That is not a command, just a help topic.");
|
||
else if (call_command_hook)
|
||
call_command_hook (c, arg, from_tty & caution);
|
||
else
|
||
(*c->function.cfunc) (arg, from_tty & caution);
|
||
}
|
||
|
||
/* Tell the user if the language has changed (except first time). */
|
||
if (current_language != expected_language)
|
||
{
|
||
if (language_mode == language_mode_auto)
|
||
{
|
||
language_info (1); /* Print what changed. */
|
||
}
|
||
warned = 0;
|
||
}
|
||
|
||
/* Warn the user if the working language does not match the
|
||
language of the current frame. Only warn the user if we are
|
||
actually running the program, i.e. there is a stack. */
|
||
/* FIXME: This should be cacheing the frame and only running when
|
||
the frame changes. */
|
||
|
||
if (target_has_stack)
|
||
{
|
||
flang = get_frame_language ();
|
||
if (!warned
|
||
&& flang != language_unknown
|
||
&& flang != current_language->la_language)
|
||
{
|
||
printf_filtered ("%s\n", lang_frame_mismatch_warn);
|
||
warned = 1;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
/* NOTE 1999-04-29: This function will be static again, once we modify
|
||
gdb to use the event loop as the default command loop and we merge
|
||
event-top.c into this file, top.c */
|
||
/* static */ void
|
||
command_loop_marker (foo)
|
||
int foo;
|
||
{
|
||
}
|
||
|
||
/* Read commands from `instream' and execute them
|
||
until end of file or error reading instream. */
|
||
|
||
void
|
||
command_loop ()
|
||
{
|
||
struct cleanup *old_chain;
|
||
char *command;
|
||
int stdin_is_tty = ISATTY (stdin);
|
||
long time_at_cmd_start;
|
||
#ifdef HAVE_SBRK
|
||
long space_at_cmd_start = 0;
|
||
#endif
|
||
extern int display_time;
|
||
extern int display_space;
|
||
|
||
while (instream && !feof (instream))
|
||
{
|
||
#if defined(TUI)
|
||
extern int insert_mode;
|
||
#endif
|
||
if (window_hook && instream == stdin)
|
||
(*window_hook) (instream, get_prompt ());
|
||
|
||
quit_flag = 0;
|
||
if (instream == stdin && stdin_is_tty)
|
||
reinitialize_more_filter ();
|
||
old_chain = make_cleanup ((make_cleanup_func) command_loop_marker, 0);
|
||
|
||
#if defined(TUI)
|
||
/* A bit of paranoia: I want to make sure the "insert_mode" global
|
||
* is clear except when it is being used for command-line editing
|
||
* (see tuiIO.c, utils.c); otherwise normal output will
|
||
* get messed up in the TUI. So clear it before/after
|
||
* the command-line-input call. - RT
|
||
*/
|
||
insert_mode = 0;
|
||
#endif
|
||
/* Get a command-line. This calls the readline package. */
|
||
command = command_line_input (instream == stdin ?
|
||
get_prompt () : (char *) NULL,
|
||
instream == stdin, "prompt");
|
||
#if defined(TUI)
|
||
insert_mode = 0;
|
||
#endif
|
||
if (command == 0)
|
||
return;
|
||
|
||
time_at_cmd_start = get_run_time ();
|
||
|
||
if (display_space)
|
||
{
|
||
#ifdef HAVE_SBRK
|
||
extern char **environ;
|
||
char *lim = (char *) sbrk (0);
|
||
|
||
space_at_cmd_start = (long) (lim - (char *) &environ);
|
||
#endif
|
||
}
|
||
|
||
execute_command (command, instream == stdin);
|
||
/* Do any commands attached to breakpoint we stopped at. */
|
||
bpstat_do_actions (&stop_bpstat);
|
||
do_cleanups (old_chain);
|
||
|
||
if (display_time)
|
||
{
|
||
long cmd_time = get_run_time () - time_at_cmd_start;
|
||
|
||
printf_unfiltered ("Command execution time: %ld.%06ld\n",
|
||
cmd_time / 1000000, cmd_time % 1000000);
|
||
}
|
||
|
||
if (display_space)
|
||
{
|
||
#ifdef HAVE_SBRK
|
||
extern char **environ;
|
||
char *lim = (char *) sbrk (0);
|
||
long space_now = lim - (char *) &environ;
|
||
long space_diff = space_now - space_at_cmd_start;
|
||
|
||
printf_unfiltered ("Space used: %ld (%c%ld for this command)\n",
|
||
space_now,
|
||
(space_diff >= 0 ? '+' : '-'),
|
||
space_diff);
|
||
#endif
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/* Commands call this if they do not want to be repeated by null lines. */
|
||
|
||
void
|
||
dont_repeat ()
|
||
{
|
||
if (server_command)
|
||
return;
|
||
|
||
/* If we aren't reading from standard input, we are saving the last
|
||
thing read from stdin in line and don't want to delete it. Null lines
|
||
won't repeat here in any case. */
|
||
if (instream == stdin)
|
||
*line = 0;
|
||
}
|
||
|
||
/* Read a line from the stream "instream" without command line editing.
|
||
|
||
It prints PROMPT_ARG once at the start.
|
||
Action is compatible with "readline", e.g. space for the result is
|
||
malloc'd and should be freed by the caller.
|
||
|
||
A NULL return means end of file. */
|
||
char *
|
||
gdb_readline (prompt_arg)
|
||
char *prompt_arg;
|
||
{
|
||
int c;
|
||
char *result;
|
||
int input_index = 0;
|
||
int result_size = 80;
|
||
|
||
if (prompt_arg)
|
||
{
|
||
/* Don't use a _filtered function here. It causes the assumed
|
||
character position to be off, since the newline we read from
|
||
the user is not accounted for. */
|
||
fputs_unfiltered (prompt_arg, gdb_stdout);
|
||
#ifdef MPW
|
||
/* Move to a new line so the entered line doesn't have a prompt
|
||
on the front of it. */
|
||
fputs_unfiltered ("\n", gdb_stdout);
|
||
#endif /* MPW */
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
|
||
result = (char *) xmalloc (result_size);
|
||
|
||
while (1)
|
||
{
|
||
/* Read from stdin if we are executing a user defined command.
|
||
This is the right thing for prompt_for_continue, at least. */
|
||
c = fgetc (instream ? instream : stdin);
|
||
|
||
if (c == EOF)
|
||
{
|
||
if (input_index > 0)
|
||
/* The last line does not end with a newline. Return it, and
|
||
if we are called again fgetc will still return EOF and
|
||
we'll return NULL then. */
|
||
break;
|
||
free (result);
|
||
return NULL;
|
||
}
|
||
|
||
if (c == '\n')
|
||
#ifndef CRLF_SOURCE_FILES
|
||
break;
|
||
#else
|
||
{
|
||
if (input_index > 0 && result[input_index - 1] == '\r')
|
||
input_index--;
|
||
break;
|
||
}
|
||
#endif
|
||
|
||
result[input_index++] = c;
|
||
while (input_index >= result_size)
|
||
{
|
||
result_size *= 2;
|
||
result = (char *) xrealloc (result, result_size);
|
||
}
|
||
}
|
||
|
||
result[input_index++] = '\0';
|
||
return result;
|
||
}
|
||
|
||
/* Variables which control command line editing and history
|
||
substitution. These variables are given default values at the end
|
||
of this file. */
|
||
static int command_editing_p;
|
||
/* NOTE 1999-04-29: This variable will be static again, once we modify
|
||
gdb to use the event loop as the default command loop and we merge
|
||
event-top.c into this file, top.c */
|
||
/* static */ int history_expansion_p;
|
||
static int write_history_p;
|
||
static int history_size;
|
||
static char *history_filename;
|
||
|
||
/* readline uses the word breaks for two things:
|
||
(1) In figuring out where to point the TEXT parameter to the
|
||
rl_completion_entry_function. Since we don't use TEXT for much,
|
||
it doesn't matter a lot what the word breaks are for this purpose, but
|
||
it does affect how much stuff M-? lists.
|
||
(2) If one of the matches contains a word break character, readline
|
||
will quote it. That's why we switch between
|
||
gdb_completer_word_break_characters and
|
||
gdb_completer_command_word_break_characters. I'm not sure when
|
||
we need this behavior (perhaps for funky characters in C++ symbols?). */
|
||
|
||
/* Variables which are necessary for fancy command line editing. */
|
||
char *gdb_completer_word_break_characters =
|
||
" \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
|
||
|
||
/* When completing on command names, we remove '-' from the list of
|
||
word break characters, since we use it in command names. If the
|
||
readline library sees one in any of the current completion strings,
|
||
it thinks that the string needs to be quoted and automatically supplies
|
||
a leading quote. */
|
||
char *gdb_completer_command_word_break_characters =
|
||
" \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,";
|
||
|
||
/* Characters that can be used to quote completion strings. Note that we
|
||
can't include '"' because the gdb C parser treats such quoted sequences
|
||
as strings. */
|
||
char *gdb_completer_quote_characters =
|
||
"'";
|
||
|
||
/* Functions that are used as part of the fancy command line editing. */
|
||
|
||
/* This can be used for functions which don't want to complete on symbols
|
||
but don't want to complete on anything else either. */
|
||
/* ARGSUSED */
|
||
char **
|
||
noop_completer (text, prefix)
|
||
char *text;
|
||
char *prefix;
|
||
{
|
||
return NULL;
|
||
}
|
||
|
||
/* Complete on filenames. */
|
||
char **
|
||
filename_completer (text, word)
|
||
char *text;
|
||
char *word;
|
||
{
|
||
/* From readline. */
|
||
extern char *filename_completion_function PARAMS ((char *, int));
|
||
int subsequent_name;
|
||
char **return_val;
|
||
int return_val_used;
|
||
int return_val_alloced;
|
||
|
||
return_val_used = 0;
|
||
/* Small for testing. */
|
||
return_val_alloced = 1;
|
||
return_val = (char **) xmalloc (return_val_alloced * sizeof (char *));
|
||
|
||
subsequent_name = 0;
|
||
while (1)
|
||
{
|
||
char *p;
|
||
p = filename_completion_function (text, subsequent_name);
|
||
if (return_val_used >= return_val_alloced)
|
||
{
|
||
return_val_alloced *= 2;
|
||
return_val =
|
||
(char **) xrealloc (return_val,
|
||
return_val_alloced * sizeof (char *));
|
||
}
|
||
if (p == NULL)
|
||
{
|
||
return_val[return_val_used++] = p;
|
||
break;
|
||
}
|
||
/* Like emacs, don't complete on old versions. Especially useful
|
||
in the "source" command. */
|
||
if (p[strlen (p) - 1] == '~')
|
||
continue;
|
||
|
||
{
|
||
char *q;
|
||
if (word == text)
|
||
/* Return exactly p. */
|
||
return_val[return_val_used++] = p;
|
||
else if (word > text)
|
||
{
|
||
/* Return some portion of p. */
|
||
q = xmalloc (strlen (p) + 5);
|
||
strcpy (q, p + (word - text));
|
||
return_val[return_val_used++] = q;
|
||
free (p);
|
||
}
|
||
else
|
||
{
|
||
/* Return some of TEXT plus p. */
|
||
q = xmalloc (strlen (p) + (text - word) + 5);
|
||
strncpy (q, word, text - word);
|
||
q[text - word] = '\0';
|
||
strcat (q, p);
|
||
return_val[return_val_used++] = q;
|
||
free (p);
|
||
}
|
||
}
|
||
subsequent_name = 1;
|
||
}
|
||
#if 0
|
||
/* There is no way to do this just long enough to affect quote inserting
|
||
without also affecting the next completion. This should be fixed in
|
||
readline. FIXME. */
|
||
/* Insure that readline does the right thing
|
||
with respect to inserting quotes. */
|
||
rl_completer_word_break_characters = "";
|
||
#endif
|
||
return return_val;
|
||
}
|
||
|
||
/* Here are some useful test cases for completion. FIXME: These should
|
||
be put in the test suite. They should be tested with both M-? and TAB.
|
||
|
||
"show output-" "radix"
|
||
"show output" "-radix"
|
||
"p" ambiguous (commands starting with p--path, print, printf, etc.)
|
||
"p " ambiguous (all symbols)
|
||
"info t foo" no completions
|
||
"info t " no completions
|
||
"info t" ambiguous ("info target", "info terminal", etc.)
|
||
"info ajksdlfk" no completions
|
||
"info ajksdlfk " no completions
|
||
"info" " "
|
||
"info " ambiguous (all info commands)
|
||
"p \"a" no completions (string constant)
|
||
"p 'a" ambiguous (all symbols starting with a)
|
||
"p b-a" ambiguous (all symbols starting with a)
|
||
"p b-" ambiguous (all symbols)
|
||
"file Make" "file" (word break hard to screw up here)
|
||
"file ../gdb.stabs/we" "ird" (needs to not break word at slash)
|
||
*/
|
||
|
||
/* Generate completions one by one for the completer. Each time we are
|
||
called return another potential completion to the caller.
|
||
line_completion just completes on commands or passes the buck to the
|
||
command's completer function, the stuff specific to symbol completion
|
||
is in make_symbol_completion_list.
|
||
|
||
TEXT is the caller's idea of the "word" we are looking at.
|
||
|
||
MATCHES is the number of matches that have currently been collected from
|
||
calling this completion function. When zero, then we need to initialize,
|
||
otherwise the initialization has already taken place and we can just
|
||
return the next potential completion string.
|
||
|
||
LINE_BUFFER is available to be looked at; it contains the entire text
|
||
of the line. POINT is the offset in that line of the cursor. You
|
||
should pretend that the line ends at POINT.
|
||
|
||
Returns NULL if there are no more completions, else a pointer to a string
|
||
which is a possible completion, it is the caller's responsibility to
|
||
free the string. */
|
||
|
||
static char *
|
||
line_completion_function (text, matches, line_buffer, point)
|
||
char *text;
|
||
int matches;
|
||
char *line_buffer;
|
||
int point;
|
||
{
|
||
static char **list = (char **) NULL; /* Cache of completions */
|
||
static int index; /* Next cached completion */
|
||
char *output = NULL;
|
||
char *tmp_command, *p;
|
||
/* Pointer within tmp_command which corresponds to text. */
|
||
char *word;
|
||
struct cmd_list_element *c, *result_list;
|
||
|
||
if (matches == 0)
|
||
{
|
||
/* The caller is beginning to accumulate a new set of completions, so
|
||
we need to find all of them now, and cache them for returning one at
|
||
a time on future calls. */
|
||
|
||
if (list)
|
||
{
|
||
/* Free the storage used by LIST, but not by the strings inside.
|
||
This is because rl_complete_internal () frees the strings. */
|
||
free ((PTR) list);
|
||
}
|
||
list = 0;
|
||
index = 0;
|
||
|
||
/* Choose the default set of word break characters to break completions.
|
||
If we later find out that we are doing completions on command strings
|
||
(as opposed to strings supplied by the individual command completer
|
||
functions, which can be any string) then we will switch to the
|
||
special word break set for command strings, which leaves out the
|
||
'-' character used in some commands. */
|
||
|
||
rl_completer_word_break_characters =
|
||
gdb_completer_word_break_characters;
|
||
|
||
/* Decide whether to complete on a list of gdb commands or on symbols. */
|
||
tmp_command = (char *) alloca (point + 1);
|
||
p = tmp_command;
|
||
|
||
strncpy (tmp_command, line_buffer, point);
|
||
tmp_command[point] = '\0';
|
||
/* Since text always contains some number of characters leading up
|
||
to point, we can find the equivalent position in tmp_command
|
||
by subtracting that many characters from the end of tmp_command. */
|
||
word = tmp_command + point - strlen (text);
|
||
|
||
if (point == 0)
|
||
{
|
||
/* An empty line we want to consider ambiguous; that is, it
|
||
could be any command. */
|
||
c = (struct cmd_list_element *) -1;
|
||
result_list = 0;
|
||
}
|
||
else
|
||
{
|
||
c = lookup_cmd_1 (&p, cmdlist, &result_list, 1);
|
||
}
|
||
|
||
/* Move p up to the next interesting thing. */
|
||
while (*p == ' ' || *p == '\t')
|
||
{
|
||
p++;
|
||
}
|
||
|
||
if (!c)
|
||
{
|
||
/* It is an unrecognized command. So there are no
|
||
possible completions. */
|
||
list = NULL;
|
||
}
|
||
else if (c == (struct cmd_list_element *) -1)
|
||
{
|
||
char *q;
|
||
|
||
/* lookup_cmd_1 advances p up to the first ambiguous thing, but
|
||
doesn't advance over that thing itself. Do so now. */
|
||
q = p;
|
||
while (*q && (isalnum (*q) || *q == '-' || *q == '_'))
|
||
++q;
|
||
if (q != tmp_command + point)
|
||
{
|
||
/* There is something beyond the ambiguous
|
||
command, so there are no possible completions. For
|
||
example, "info t " or "info t foo" does not complete
|
||
to anything, because "info t" can be "info target" or
|
||
"info terminal". */
|
||
list = NULL;
|
||
}
|
||
else
|
||
{
|
||
/* We're trying to complete on the command which was ambiguous.
|
||
This we can deal with. */
|
||
if (result_list)
|
||
{
|
||
list = complete_on_cmdlist (*result_list->prefixlist, p,
|
||
word);
|
||
}
|
||
else
|
||
{
|
||
list = complete_on_cmdlist (cmdlist, p, word);
|
||
}
|
||
/* Insure that readline does the right thing with respect to
|
||
inserting quotes. */
|
||
rl_completer_word_break_characters =
|
||
gdb_completer_command_word_break_characters;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* We've recognized a full command. */
|
||
|
||
if (p == tmp_command + point)
|
||
{
|
||
/* There is no non-whitespace in the line beyond the command. */
|
||
|
||
if (p[-1] == ' ' || p[-1] == '\t')
|
||
{
|
||
/* The command is followed by whitespace; we need to complete
|
||
on whatever comes after command. */
|
||
if (c->prefixlist)
|
||
{
|
||
/* It is a prefix command; what comes after it is
|
||
a subcommand (e.g. "info "). */
|
||
list = complete_on_cmdlist (*c->prefixlist, p, word);
|
||
|
||
/* Insure that readline does the right thing
|
||
with respect to inserting quotes. */
|
||
rl_completer_word_break_characters =
|
||
gdb_completer_command_word_break_characters;
|
||
}
|
||
else if (c->enums)
|
||
{
|
||
list = complete_on_enum (c->enums, p, word);
|
||
rl_completer_word_break_characters =
|
||
gdb_completer_command_word_break_characters;
|
||
}
|
||
else
|
||
{
|
||
/* It is a normal command; what comes after it is
|
||
completed by the command's completer function. */
|
||
list = (*c->completer) (p, word);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* The command is not followed by whitespace; we need to
|
||
complete on the command itself. e.g. "p" which is a
|
||
command itself but also can complete to "print", "ptype"
|
||
etc. */
|
||
char *q;
|
||
|
||
/* Find the command we are completing on. */
|
||
q = p;
|
||
while (q > tmp_command)
|
||
{
|
||
if (isalnum (q[-1]) || q[-1] == '-' || q[-1] == '_')
|
||
--q;
|
||
else
|
||
break;
|
||
}
|
||
|
||
list = complete_on_cmdlist (result_list, q, word);
|
||
|
||
/* Insure that readline does the right thing
|
||
with respect to inserting quotes. */
|
||
rl_completer_word_break_characters =
|
||
gdb_completer_command_word_break_characters;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* There is non-whitespace beyond the command. */
|
||
|
||
if (c->prefixlist && !c->allow_unknown)
|
||
{
|
||
/* It is an unrecognized subcommand of a prefix command,
|
||
e.g. "info adsfkdj". */
|
||
list = NULL;
|
||
}
|
||
else if (c->enums)
|
||
{
|
||
list = complete_on_enum (c->enums, p, word);
|
||
}
|
||
else
|
||
{
|
||
/* It is a normal command. */
|
||
list = (*c->completer) (p, word);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* If we found a list of potential completions during initialization then
|
||
dole them out one at a time. The vector of completions is NULL
|
||
terminated, so after returning the last one, return NULL (and continue
|
||
to do so) each time we are called after that, until a new list is
|
||
available. */
|
||
|
||
if (list)
|
||
{
|
||
output = list[index];
|
||
if (output)
|
||
{
|
||
index++;
|
||
}
|
||
}
|
||
|
||
#if 0
|
||
/* Can't do this because readline hasn't yet checked the word breaks
|
||
for figuring out whether to insert a quote. */
|
||
if (output == NULL)
|
||
/* Make sure the word break characters are set back to normal for the
|
||
next time that readline tries to complete something. */
|
||
rl_completer_word_break_characters =
|
||
gdb_completer_word_break_characters;
|
||
#endif
|
||
|
||
return (output);
|
||
}
|
||
|
||
/* Line completion interface function for readline. */
|
||
|
||
static char *
|
||
readline_line_completion_function (text, matches)
|
||
char *text;
|
||
int matches;
|
||
{
|
||
return line_completion_function (text, matches, rl_line_buffer, rl_point);
|
||
}
|
||
|
||
/* Skip over a possibly quoted word (as defined by the quote characters
|
||
and word break characters the completer uses). Returns pointer to the
|
||
location after the "word". */
|
||
|
||
char *
|
||
skip_quoted (str)
|
||
char *str;
|
||
{
|
||
char quote_char = '\0';
|
||
char *scan;
|
||
|
||
for (scan = str; *scan != '\0'; scan++)
|
||
{
|
||
if (quote_char != '\0')
|
||
{
|
||
/* Ignore everything until the matching close quote char */
|
||
if (*scan == quote_char)
|
||
{
|
||
/* Found matching close quote. */
|
||
scan++;
|
||
break;
|
||
}
|
||
}
|
||
else if (strchr (gdb_completer_quote_characters, *scan))
|
||
{
|
||
/* Found start of a quoted string. */
|
||
quote_char = *scan;
|
||
}
|
||
else if (strchr (gdb_completer_word_break_characters, *scan))
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
return (scan);
|
||
}
|
||
|
||
|
||
#ifdef STOP_SIGNAL
|
||
static void
|
||
stop_sig (signo)
|
||
int signo;
|
||
{
|
||
#if STOP_SIGNAL == SIGTSTP
|
||
signal (SIGTSTP, SIG_DFL);
|
||
sigsetmask (0);
|
||
kill (getpid (), SIGTSTP);
|
||
signal (SIGTSTP, stop_sig);
|
||
#else
|
||
signal (STOP_SIGNAL, stop_sig);
|
||
#endif
|
||
printf_unfiltered ("%s", get_prompt ());
|
||
gdb_flush (gdb_stdout);
|
||
|
||
/* Forget about any previous command -- null line now will do nothing. */
|
||
dont_repeat ();
|
||
}
|
||
#endif /* STOP_SIGNAL */
|
||
|
||
/* Initialize signal handlers. */
|
||
static void
|
||
do_nothing (signo)
|
||
int signo;
|
||
{
|
||
/* Under System V the default disposition of a signal is reinstated after
|
||
the signal is caught and delivered to an application process. On such
|
||
systems one must restore the replacement signal handler if one wishes
|
||
to continue handling the signal in one's program. On BSD systems this
|
||
is not needed but it is harmless, and it simplifies the code to just do
|
||
it unconditionally. */
|
||
signal (signo, do_nothing);
|
||
}
|
||
|
||
static void
|
||
init_signals ()
|
||
{
|
||
signal (SIGINT, request_quit);
|
||
|
||
/* If SIGTRAP was set to SIG_IGN, then the SIG_IGN will get passed
|
||
to the inferior and breakpoints will be ignored. */
|
||
#ifdef SIGTRAP
|
||
signal (SIGTRAP, SIG_DFL);
|
||
#endif
|
||
|
||
/* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get
|
||
passed to the inferior, which we don't want. It would be
|
||
possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but
|
||
on BSD4.3 systems using vfork, that can affect the
|
||
GDB process as well as the inferior (the signal handling tables
|
||
might be in memory, shared between the two). Since we establish
|
||
a handler for SIGQUIT, when we call exec it will set the signal
|
||
to SIG_DFL for us. */
|
||
signal (SIGQUIT, do_nothing);
|
||
#ifdef SIGHUP
|
||
if (signal (SIGHUP, do_nothing) != SIG_IGN)
|
||
signal (SIGHUP, disconnect);
|
||
#endif
|
||
signal (SIGFPE, float_handler);
|
||
|
||
#if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
|
||
signal (SIGWINCH, SIGWINCH_HANDLER);
|
||
#endif
|
||
}
|
||
|
||
/* Read one line from the command input stream `instream'
|
||
into the local static buffer `linebuffer' (whose current length
|
||
is `linelength').
|
||
The buffer is made bigger as necessary.
|
||
Returns the address of the start of the line.
|
||
|
||
NULL is returned for end of file.
|
||
|
||
*If* the instream == stdin & stdin is a terminal, the line read
|
||
is copied into the file line saver (global var char *line,
|
||
length linesize) so that it can be duplicated.
|
||
|
||
This routine either uses fancy command line editing or
|
||
simple input as the user has requested. */
|
||
|
||
char *
|
||
command_line_input (prompt_arg, repeat, annotation_suffix)
|
||
char *prompt_arg;
|
||
int repeat;
|
||
char *annotation_suffix;
|
||
{
|
||
static char *linebuffer = 0;
|
||
static unsigned linelength = 0;
|
||
register char *p;
|
||
char *p1;
|
||
char *rl;
|
||
char *local_prompt = prompt_arg;
|
||
char *nline;
|
||
char got_eof = 0;
|
||
|
||
/* The annotation suffix must be non-NULL. */
|
||
if (annotation_suffix == NULL)
|
||
annotation_suffix = "";
|
||
|
||
if (annotation_level > 1 && instream == stdin)
|
||
{
|
||
local_prompt = alloca ((prompt_arg == NULL ? 0 : strlen (prompt_arg))
|
||
+ strlen (annotation_suffix) + 40);
|
||
if (prompt_arg == NULL)
|
||
local_prompt[0] = '\0';
|
||
else
|
||
strcpy (local_prompt, prompt_arg);
|
||
strcat (local_prompt, "\n\032\032");
|
||
strcat (local_prompt, annotation_suffix);
|
||
strcat (local_prompt, "\n");
|
||
}
|
||
|
||
if (linebuffer == 0)
|
||
{
|
||
linelength = 80;
|
||
linebuffer = (char *) xmalloc (linelength);
|
||
}
|
||
|
||
p = linebuffer;
|
||
|
||
/* Control-C quits instantly if typed while in this loop
|
||
since it should not wait until the user types a newline. */
|
||
immediate_quit++;
|
||
#ifdef STOP_SIGNAL
|
||
if (job_control)
|
||
{
|
||
if (async_p)
|
||
signal (STOP_SIGNAL, handle_stop_sig);
|
||
else
|
||
signal (STOP_SIGNAL, stop_sig);
|
||
}
|
||
#endif
|
||
|
||
while (1)
|
||
{
|
||
/* Make sure that all output has been output. Some machines may let
|
||
you get away with leaving out some of the gdb_flush, but not all. */
|
||
wrap_here ("");
|
||
gdb_flush (gdb_stdout);
|
||
gdb_flush (gdb_stderr);
|
||
|
||
if (source_file_name != NULL)
|
||
{
|
||
++source_line_number;
|
||
sprintf (source_error,
|
||
"%s%s:%d: Error in sourced command file:\n",
|
||
source_pre_error,
|
||
source_file_name,
|
||
source_line_number);
|
||
error_pre_print = source_error;
|
||
}
|
||
|
||
if (annotation_level > 1 && instream == stdin)
|
||
{
|
||
printf_unfiltered ("\n\032\032pre-");
|
||
printf_unfiltered (annotation_suffix);
|
||
printf_unfiltered ("\n");
|
||
}
|
||
|
||
/* Don't use fancy stuff if not talking to stdin. */
|
||
if (readline_hook && instream == NULL)
|
||
{
|
||
rl = (*readline_hook) (local_prompt);
|
||
}
|
||
else if (command_editing_p && instream == stdin && ISATTY (instream))
|
||
{
|
||
rl = readline (local_prompt);
|
||
}
|
||
else
|
||
{
|
||
rl = gdb_readline (local_prompt);
|
||
}
|
||
|
||
if (annotation_level > 1 && instream == stdin)
|
||
{
|
||
printf_unfiltered ("\n\032\032post-");
|
||
printf_unfiltered (annotation_suffix);
|
||
printf_unfiltered ("\n");
|
||
}
|
||
|
||
if (!rl || rl == (char *) EOF)
|
||
{
|
||
got_eof = 1;
|
||
break;
|
||
}
|
||
if (strlen (rl) + 1 + (p - linebuffer) > linelength)
|
||
{
|
||
linelength = strlen (rl) + 1 + (p - linebuffer);
|
||
nline = (char *) xrealloc (linebuffer, linelength);
|
||
p += nline - linebuffer;
|
||
linebuffer = nline;
|
||
}
|
||
p1 = rl;
|
||
/* Copy line. Don't copy null at end. (Leaves line alone
|
||
if this was just a newline) */
|
||
while (*p1)
|
||
*p++ = *p1++;
|
||
|
||
free (rl); /* Allocated in readline. */
|
||
|
||
if (p == linebuffer || *(p - 1) != '\\')
|
||
break;
|
||
|
||
p--; /* Put on top of '\'. */
|
||
local_prompt = (char *) 0;
|
||
}
|
||
|
||
#ifdef STOP_SIGNAL
|
||
if (job_control)
|
||
signal (STOP_SIGNAL, SIG_DFL);
|
||
#endif
|
||
immediate_quit--;
|
||
|
||
if (got_eof)
|
||
return NULL;
|
||
|
||
#define SERVER_COMMAND_LENGTH 7
|
||
server_command =
|
||
(p - linebuffer > SERVER_COMMAND_LENGTH)
|
||
&& STREQN (linebuffer, "server ", SERVER_COMMAND_LENGTH);
|
||
if (server_command)
|
||
{
|
||
/* Note that we don't set `line'. Between this and the check in
|
||
dont_repeat, this insures that repeating will still do the
|
||
right thing. */
|
||
*p = '\0';
|
||
return linebuffer + SERVER_COMMAND_LENGTH;
|
||
}
|
||
|
||
/* Do history expansion if that is wished. */
|
||
if (history_expansion_p && instream == stdin
|
||
&& ISATTY (instream))
|
||
{
|
||
char *history_value;
|
||
int expanded;
|
||
|
||
*p = '\0'; /* Insert null now. */
|
||
expanded = history_expand (linebuffer, &history_value);
|
||
if (expanded)
|
||
{
|
||
/* Print the changes. */
|
||
printf_unfiltered ("%s\n", history_value);
|
||
|
||
/* If there was an error, call this function again. */
|
||
if (expanded < 0)
|
||
{
|
||
free (history_value);
|
||
return command_line_input (prompt_arg, repeat, annotation_suffix);
|
||
}
|
||
if (strlen (history_value) > linelength)
|
||
{
|
||
linelength = strlen (history_value) + 1;
|
||
linebuffer = (char *) xrealloc (linebuffer, linelength);
|
||
}
|
||
strcpy (linebuffer, history_value);
|
||
p = linebuffer + strlen (linebuffer);
|
||
free (history_value);
|
||
}
|
||
}
|
||
|
||
/* If we just got an empty line, and that is supposed
|
||
to repeat the previous command, return the value in the
|
||
global buffer. */
|
||
if (repeat && p == linebuffer)
|
||
return line;
|
||
for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++);
|
||
if (repeat && !*p1)
|
||
return line;
|
||
|
||
*p = 0;
|
||
|
||
/* Add line to history if appropriate. */
|
||
if (instream == stdin
|
||
&& ISATTY (stdin) && *linebuffer)
|
||
add_history (linebuffer);
|
||
|
||
/* Note: lines consisting solely of comments are added to the command
|
||
history. This is useful when you type a command, and then
|
||
realize you don't want to execute it quite yet. You can comment
|
||
out the command and then later fetch it from the value history
|
||
and remove the '#'. The kill ring is probably better, but some
|
||
people are in the habit of commenting things out. */
|
||
if (*p1 == '#')
|
||
*p1 = '\0'; /* Found a comment. */
|
||
|
||
/* Save into global buffer if appropriate. */
|
||
if (repeat)
|
||
{
|
||
if (linelength > linesize)
|
||
{
|
||
line = xrealloc (line, linelength);
|
||
linesize = linelength;
|
||
}
|
||
strcpy (line, linebuffer);
|
||
return line;
|
||
}
|
||
|
||
return linebuffer;
|
||
}
|
||
|
||
|
||
/* Expand the body_list of COMMAND so that it can hold NEW_LENGTH
|
||
code bodies. This is typically used when we encounter an "else"
|
||
clause for an "if" command. */
|
||
|
||
static void
|
||
realloc_body_list (command, new_length)
|
||
struct command_line *command;
|
||
int new_length;
|
||
{
|
||
int n;
|
||
struct command_line **body_list;
|
||
|
||
n = command->body_count;
|
||
|
||
/* Nothing to do? */
|
||
if (new_length <= n)
|
||
return;
|
||
|
||
body_list = (struct command_line **)
|
||
xmalloc (sizeof (struct command_line *) * new_length);
|
||
|
||
memcpy (body_list, command->body_list, sizeof (struct command_line *) * n);
|
||
|
||
free (command->body_list);
|
||
command->body_list = body_list;
|
||
command->body_count = new_length;
|
||
}
|
||
|
||
/* Read one line from the input stream. If the command is an "else" or
|
||
"end", return such an indication to the caller. */
|
||
|
||
static enum misc_command_type
|
||
read_next_line (command)
|
||
struct command_line **command;
|
||
{
|
||
char *p, *p1, *prompt_ptr, control_prompt[256];
|
||
int i = 0;
|
||
|
||
if (control_level >= 254)
|
||
error ("Control nesting too deep!\n");
|
||
|
||
/* Set a prompt based on the nesting of the control commands. */
|
||
if (instream == stdin || (instream == 0 && readline_hook != NULL))
|
||
{
|
||
for (i = 0; i < control_level; i++)
|
||
control_prompt[i] = ' ';
|
||
control_prompt[i] = '>';
|
||
control_prompt[i + 1] = '\0';
|
||
prompt_ptr = (char *) &control_prompt[0];
|
||
}
|
||
else
|
||
prompt_ptr = NULL;
|
||
|
||
p = command_line_input (prompt_ptr, instream == stdin, "commands");
|
||
|
||
/* Not sure what to do here. */
|
||
if (p == NULL)
|
||
return end_command;
|
||
|
||
/* Strip leading and trailing whitespace. */
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
|
||
p1 = p + strlen (p);
|
||
while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t'))
|
||
p1--;
|
||
|
||
/* Blanks and comments don't really do anything, but we need to
|
||
distinguish them from else, end and other commands which can be
|
||
executed. */
|
||
if (p1 == p || p[0] == '#')
|
||
return nop_command;
|
||
|
||
/* Is this the end of a simple, while, or if control structure? */
|
||
if (p1 - p == 3 && !strncmp (p, "end", 3))
|
||
return end_command;
|
||
|
||
/* Is the else clause of an if control structure? */
|
||
if (p1 - p == 4 && !strncmp (p, "else", 4))
|
||
return else_command;
|
||
|
||
/* Check for while, if, break, continue, etc and build a new command
|
||
line structure for them. */
|
||
if (p1 - p > 5 && !strncmp (p, "while", 5))
|
||
*command = build_command_line (while_control, p + 6);
|
||
else if (p1 - p > 2 && !strncmp (p, "if", 2))
|
||
*command = build_command_line (if_control, p + 3);
|
||
else if (p1 - p == 10 && !strncmp (p, "loop_break", 10))
|
||
{
|
||
*command = (struct command_line *)
|
||
xmalloc (sizeof (struct command_line));
|
||
(*command)->next = NULL;
|
||
(*command)->line = NULL;
|
||
(*command)->control_type = break_control;
|
||
(*command)->body_count = 0;
|
||
(*command)->body_list = NULL;
|
||
}
|
||
else if (p1 - p == 13 && !strncmp (p, "loop_continue", 13))
|
||
{
|
||
*command = (struct command_line *)
|
||
xmalloc (sizeof (struct command_line));
|
||
(*command)->next = NULL;
|
||
(*command)->line = NULL;
|
||
(*command)->control_type = continue_control;
|
||
(*command)->body_count = 0;
|
||
(*command)->body_list = NULL;
|
||
}
|
||
else
|
||
{
|
||
/* A normal command. */
|
||
*command = (struct command_line *)
|
||
xmalloc (sizeof (struct command_line));
|
||
(*command)->next = NULL;
|
||
(*command)->line = savestring (p, p1 - p);
|
||
(*command)->control_type = simple_control;
|
||
(*command)->body_count = 0;
|
||
(*command)->body_list = NULL;
|
||
}
|
||
|
||
/* Nothing special. */
|
||
return ok_command;
|
||
}
|
||
|
||
/* Recursively read in the control structures and create a command_line
|
||
structure from them.
|
||
|
||
The parent_control parameter is the control structure in which the
|
||
following commands are nested. */
|
||
|
||
static enum command_control_type
|
||
recurse_read_control_structure (current_cmd)
|
||
struct command_line *current_cmd;
|
||
{
|
||
int current_body, i;
|
||
enum misc_command_type val;
|
||
enum command_control_type ret;
|
||
struct command_line **body_ptr, *child_tail, *next;
|
||
|
||
child_tail = NULL;
|
||
current_body = 1;
|
||
|
||
/* Sanity checks. */
|
||
if (current_cmd->control_type == simple_control)
|
||
{
|
||
error ("Recursed on a simple control type\n");
|
||
return invalid_control;
|
||
}
|
||
|
||
if (current_body > current_cmd->body_count)
|
||
{
|
||
error ("Allocated body is smaller than this command type needs\n");
|
||
return invalid_control;
|
||
}
|
||
|
||
/* Read lines from the input stream and build control structures. */
|
||
while (1)
|
||
{
|
||
dont_repeat ();
|
||
|
||
next = NULL;
|
||
val = read_next_line (&next);
|
||
|
||
/* Just skip blanks and comments. */
|
||
if (val == nop_command)
|
||
continue;
|
||
|
||
if (val == end_command)
|
||
{
|
||
if (current_cmd->control_type == while_control
|
||
|| current_cmd->control_type == if_control)
|
||
{
|
||
/* Success reading an entire control structure. */
|
||
ret = simple_control;
|
||
break;
|
||
}
|
||
else
|
||
{
|
||
ret = invalid_control;
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Not the end of a control structure. */
|
||
if (val == else_command)
|
||
{
|
||
if (current_cmd->control_type == if_control
|
||
&& current_body == 1)
|
||
{
|
||
realloc_body_list (current_cmd, 2);
|
||
current_body = 2;
|
||
child_tail = NULL;
|
||
continue;
|
||
}
|
||
else
|
||
{
|
||
ret = invalid_control;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (child_tail)
|
||
{
|
||
child_tail->next = next;
|
||
}
|
||
else
|
||
{
|
||
body_ptr = current_cmd->body_list;
|
||
for (i = 1; i < current_body; i++)
|
||
body_ptr++;
|
||
|
||
*body_ptr = next;
|
||
|
||
}
|
||
|
||
child_tail = next;
|
||
|
||
/* If the latest line is another control structure, then recurse
|
||
on it. */
|
||
if (next->control_type == while_control
|
||
|| next->control_type == if_control)
|
||
{
|
||
control_level++;
|
||
ret = recurse_read_control_structure (next);
|
||
control_level--;
|
||
|
||
if (ret != simple_control)
|
||
break;
|
||
}
|
||
}
|
||
|
||
dont_repeat ();
|
||
|
||
return ret;
|
||
}
|
||
|
||
/* Read lines from the input stream and accumulate them in a chain of
|
||
struct command_line's, which is then returned. For input from a
|
||
terminal, the special command "end" is used to mark the end of the
|
||
input, and is not included in the returned chain of commands. */
|
||
|
||
#define END_MESSAGE "End with a line saying just \"end\"."
|
||
|
||
struct command_line *
|
||
read_command_lines (prompt_arg, from_tty)
|
||
char *prompt_arg;
|
||
int from_tty;
|
||
{
|
||
struct command_line *head, *tail, *next;
|
||
struct cleanup *old_chain;
|
||
enum command_control_type ret;
|
||
enum misc_command_type val;
|
||
|
||
control_level = 0;
|
||
if (readline_begin_hook)
|
||
{
|
||
/* Note - intentional to merge messages with no newline */
|
||
(*readline_begin_hook) ("%s %s\n", prompt_arg, END_MESSAGE);
|
||
}
|
||
else if (from_tty && input_from_terminal_p ())
|
||
{
|
||
printf_unfiltered ("%s\n%s\n", prompt_arg, END_MESSAGE);
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
|
||
head = tail = NULL;
|
||
old_chain = NULL;
|
||
|
||
while (1)
|
||
{
|
||
val = read_next_line (&next);
|
||
|
||
/* Ignore blank lines or comments. */
|
||
if (val == nop_command)
|
||
continue;
|
||
|
||
if (val == end_command)
|
||
{
|
||
ret = simple_control;
|
||
break;
|
||
}
|
||
|
||
if (val != ok_command)
|
||
{
|
||
ret = invalid_control;
|
||
break;
|
||
}
|
||
|
||
if (next->control_type == while_control
|
||
|| next->control_type == if_control)
|
||
{
|
||
control_level++;
|
||
ret = recurse_read_control_structure (next);
|
||
control_level--;
|
||
|
||
if (ret == invalid_control)
|
||
break;
|
||
}
|
||
|
||
if (tail)
|
||
{
|
||
tail->next = next;
|
||
}
|
||
else
|
||
{
|
||
head = next;
|
||
old_chain = make_cleanup ((make_cleanup_func) free_command_lines,
|
||
&head);
|
||
}
|
||
tail = next;
|
||
}
|
||
|
||
dont_repeat ();
|
||
|
||
if (head)
|
||
{
|
||
if (ret != invalid_control)
|
||
{
|
||
discard_cleanups (old_chain);
|
||
}
|
||
else
|
||
do_cleanups (old_chain);
|
||
}
|
||
|
||
if (readline_end_hook)
|
||
{
|
||
(*readline_end_hook) ();
|
||
}
|
||
return (head);
|
||
}
|
||
|
||
/* Free a chain of struct command_line's. */
|
||
|
||
void
|
||
free_command_lines (lptr)
|
||
struct command_line **lptr;
|
||
{
|
||
register struct command_line *l = *lptr;
|
||
register struct command_line *next;
|
||
struct command_line **blist;
|
||
int i;
|
||
|
||
while (l)
|
||
{
|
||
if (l->body_count > 0)
|
||
{
|
||
blist = l->body_list;
|
||
for (i = 0; i < l->body_count; i++, blist++)
|
||
free_command_lines (blist);
|
||
}
|
||
next = l->next;
|
||
free (l->line);
|
||
free ((PTR) l);
|
||
l = next;
|
||
}
|
||
}
|
||
|
||
/* Add an element to the list of info subcommands. */
|
||
|
||
void
|
||
add_info (name, fun, doc)
|
||
char *name;
|
||
void (*fun) PARAMS ((char *, int));
|
||
char *doc;
|
||
{
|
||
add_cmd (name, no_class, fun, doc, &infolist);
|
||
}
|
||
|
||
/* Add an alias to the list of info subcommands. */
|
||
|
||
void
|
||
add_info_alias (name, oldname, abbrev_flag)
|
||
char *name;
|
||
char *oldname;
|
||
int abbrev_flag;
|
||
{
|
||
add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist);
|
||
}
|
||
|
||
/* The "info" command is defined as a prefix, with allow_unknown = 0.
|
||
Therefore, its own definition is called only for "info" with no args. */
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
info_command (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
printf_unfiltered ("\"info\" must be followed by the name of an info command.\n");
|
||
help_list (infolist, "info ", -1, gdb_stdout);
|
||
}
|
||
|
||
/* The "complete" command is used by Emacs to implement completion. */
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
complete_command (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
int i;
|
||
int argpoint;
|
||
char *completion;
|
||
|
||
dont_repeat ();
|
||
|
||
if (arg == NULL)
|
||
arg = "";
|
||
argpoint = strlen (arg);
|
||
|
||
for (completion = line_completion_function (arg, i = 0, arg, argpoint);
|
||
completion;
|
||
completion = line_completion_function (arg, ++i, arg, argpoint))
|
||
{
|
||
printf_unfiltered ("%s\n", completion);
|
||
free (completion);
|
||
}
|
||
}
|
||
|
||
/* The "show" command with no arguments shows all the settings. */
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
show_command (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
cmd_show_list (showlist, from_tty, "");
|
||
}
|
||
|
||
/* Add an element to the list of commands. */
|
||
|
||
void
|
||
add_com (name, class, fun, doc)
|
||
char *name;
|
||
enum command_class class;
|
||
void (*fun) PARAMS ((char *, int));
|
||
char *doc;
|
||
{
|
||
add_cmd (name, class, fun, doc, &cmdlist);
|
||
}
|
||
|
||
/* Add an alias or abbreviation command to the list of commands. */
|
||
|
||
void
|
||
add_com_alias (name, oldname, class, abbrev_flag)
|
||
char *name;
|
||
char *oldname;
|
||
enum command_class class;
|
||
int abbrev_flag;
|
||
{
|
||
add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist);
|
||
}
|
||
|
||
void
|
||
error_no_arg (why)
|
||
char *why;
|
||
{
|
||
error ("Argument required (%s).", why);
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
help_command (command, from_tty)
|
||
char *command;
|
||
int from_tty; /* Ignored */
|
||
{
|
||
help_cmd (command, gdb_stdout);
|
||
}
|
||
|
||
static void
|
||
validate_comname (comname)
|
||
char *comname;
|
||
{
|
||
register char *p;
|
||
|
||
if (comname == 0)
|
||
error_no_arg ("name of command to define");
|
||
|
||
p = comname;
|
||
while (*p)
|
||
{
|
||
if (!isalnum (*p) && *p != '-' && *p != '_')
|
||
error ("Junk in argument list: \"%s\"", p);
|
||
p++;
|
||
}
|
||
}
|
||
|
||
/* This is just a placeholder in the command data structures. */
|
||
static void
|
||
user_defined_command (ignore, from_tty)
|
||
char *ignore;
|
||
int from_tty;
|
||
{
|
||
}
|
||
|
||
static void
|
||
define_command (comname, from_tty)
|
||
char *comname;
|
||
int from_tty;
|
||
{
|
||
register struct command_line *cmds;
|
||
register struct cmd_list_element *c, *newc, *hookc = 0;
|
||
char *tem = comname;
|
||
char tmpbuf[128];
|
||
#define HOOK_STRING "hook-"
|
||
#define HOOK_LEN 5
|
||
|
||
validate_comname (comname);
|
||
|
||
/* Look it up, and verify that we got an exact match. */
|
||
c = lookup_cmd (&tem, cmdlist, "", -1, 1);
|
||
if (c && !STREQ (comname, c->name))
|
||
c = 0;
|
||
|
||
if (c)
|
||
{
|
||
if (c->class == class_user || c->class == class_alias)
|
||
tem = "Redefine command \"%s\"? ";
|
||
else
|
||
tem = "Really redefine built-in command \"%s\"? ";
|
||
if (!query (tem, c->name))
|
||
error ("Command \"%s\" not redefined.", c->name);
|
||
}
|
||
|
||
/* If this new command is a hook, then mark the command which it
|
||
is hooking. Note that we allow hooking `help' commands, so that
|
||
we can hook the `stop' pseudo-command. */
|
||
|
||
if (!strncmp (comname, HOOK_STRING, HOOK_LEN))
|
||
{
|
||
/* Look up cmd it hooks, and verify that we got an exact match. */
|
||
tem = comname + HOOK_LEN;
|
||
hookc = lookup_cmd (&tem, cmdlist, "", -1, 0);
|
||
if (hookc && !STREQ (comname + HOOK_LEN, hookc->name))
|
||
hookc = 0;
|
||
if (!hookc)
|
||
{
|
||
warning ("Your new `%s' command does not hook any existing command.",
|
||
comname);
|
||
if (!query ("Proceed? "))
|
||
error ("Not confirmed.");
|
||
}
|
||
}
|
||
|
||
comname = savestring (comname, strlen (comname));
|
||
|
||
/* If the rest of the commands will be case insensitive, this one
|
||
should behave in the same manner. */
|
||
for (tem = comname; *tem; tem++)
|
||
if (isupper (*tem))
|
||
*tem = tolower (*tem);
|
||
|
||
sprintf (tmpbuf, "Type commands for definition of \"%s\".", comname);
|
||
cmds = read_command_lines (tmpbuf, from_tty);
|
||
|
||
if (c && c->class == class_user)
|
||
free_command_lines (&c->user_commands);
|
||
|
||
newc = add_cmd (comname, class_user, user_defined_command,
|
||
(c && c->class == class_user)
|
||
? c->doc : savestring ("User-defined.", 13), &cmdlist);
|
||
newc->user_commands = cmds;
|
||
|
||
/* If this new command is a hook, then mark both commands as being
|
||
tied. */
|
||
if (hookc)
|
||
{
|
||
hookc->hook = newc; /* Target gets hooked. */
|
||
newc->hookee = hookc; /* We are marked as hooking target cmd. */
|
||
}
|
||
}
|
||
|
||
static void
|
||
document_command (comname, from_tty)
|
||
char *comname;
|
||
int from_tty;
|
||
{
|
||
struct command_line *doclines;
|
||
register struct cmd_list_element *c;
|
||
char *tem = comname;
|
||
char tmpbuf[128];
|
||
|
||
validate_comname (comname);
|
||
|
||
c = lookup_cmd (&tem, cmdlist, "", 0, 1);
|
||
|
||
if (c->class != class_user)
|
||
error ("Command \"%s\" is built-in.", comname);
|
||
|
||
sprintf (tmpbuf, "Type documentation for \"%s\".", comname);
|
||
doclines = read_command_lines (tmpbuf, from_tty);
|
||
|
||
if (c->doc)
|
||
free (c->doc);
|
||
|
||
{
|
||
register struct command_line *cl1;
|
||
register int len = 0;
|
||
|
||
for (cl1 = doclines; cl1; cl1 = cl1->next)
|
||
len += strlen (cl1->line) + 1;
|
||
|
||
c->doc = (char *) xmalloc (len + 1);
|
||
*c->doc = 0;
|
||
|
||
for (cl1 = doclines; cl1; cl1 = cl1->next)
|
||
{
|
||
strcat (c->doc, cl1->line);
|
||
if (cl1->next)
|
||
strcat (c->doc, "\n");
|
||
}
|
||
}
|
||
|
||
free_command_lines (&doclines);
|
||
}
|
||
|
||
/* Print the GDB banner. */
|
||
void
|
||
print_gdb_version (stream)
|
||
GDB_FILE *stream;
|
||
{
|
||
/* From GNU coding standards, first line is meant to be easy for a
|
||
program to parse, and is just canonical program name and version
|
||
number, which starts after last space. */
|
||
|
||
fprintf_filtered (stream, "GNU gdb %s\n", version);
|
||
|
||
/* Second line is a copyright notice. */
|
||
|
||
fprintf_filtered (stream, "Copyright 1998 Free Software Foundation, Inc.\n");
|
||
|
||
/* Following the copyright is a brief statement that the program is
|
||
free software, that users are free to copy and change it on
|
||
certain conditions, that it is covered by the GNU GPL, and that
|
||
there is no warranty. */
|
||
|
||
fprintf_filtered (stream, "\
|
||
GDB is free software, covered by the GNU General Public License, and you are\n\
|
||
welcome to change it and/or distribute copies of it under certain conditions.\n\
|
||
Type \"show copying\" to see the conditions.\n\
|
||
There is absolutely no warranty for GDB. Type \"show warranty\" for details.\n");
|
||
|
||
/* After the required info we print the configuration information. */
|
||
|
||
fprintf_filtered (stream, "This GDB was configured as \"");
|
||
if (!STREQ (host_name, target_name))
|
||
{
|
||
fprintf_filtered (stream, "--host=%s --target=%s", host_name, target_name);
|
||
}
|
||
else
|
||
{
|
||
fprintf_filtered (stream, "%s", host_name);
|
||
}
|
||
fprintf_filtered (stream, "\".");
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
show_version (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
immediate_quit++;
|
||
print_gdb_version (gdb_stdout);
|
||
printf_filtered ("\n");
|
||
immediate_quit--;
|
||
}
|
||
|
||
/* get_prompt: access method for the GDB prompt string. */
|
||
|
||
#define MAX_PROMPT_SIZE 256
|
||
|
||
/*
|
||
* int get_prompt_1 (char * buf);
|
||
*
|
||
* Work-horse for get_prompt (called via catch_errors).
|
||
* Argument is buffer to hold the formatted prompt.
|
||
*
|
||
* Returns: 1 for success (use formatted prompt)
|
||
* 0 for failure (use gdb_prompt_string).
|
||
*/
|
||
|
||
static int gdb_prompt_escape;
|
||
|
||
static int
|
||
get_prompt_1 (formatted_prompt)
|
||
char *formatted_prompt;
|
||
{
|
||
char *local_prompt;
|
||
|
||
if (async_p)
|
||
local_prompt = PROMPT (0);
|
||
else
|
||
local_prompt = gdb_prompt_string;
|
||
|
||
|
||
if (gdb_prompt_escape == 0)
|
||
{
|
||
return 0; /* do no formatting */
|
||
}
|
||
else
|
||
/* formatted prompt */
|
||
{
|
||
char fmt[40], *promptp, *outp, *tmp;
|
||
value_ptr arg_val;
|
||
DOUBLEST doubleval;
|
||
LONGEST longval;
|
||
CORE_ADDR addrval;
|
||
|
||
int i, len;
|
||
struct type *arg_type, *elt_type;
|
||
|
||
promptp = local_prompt;
|
||
outp = formatted_prompt;
|
||
|
||
while (*promptp != '\0')
|
||
{
|
||
int available = MAX_PROMPT_SIZE - (outp - formatted_prompt) - 1;
|
||
|
||
if (*promptp != gdb_prompt_escape)
|
||
{
|
||
if (available >= 1) /* overflow protect */
|
||
*outp++ = *promptp++;
|
||
}
|
||
else
|
||
{
|
||
/* GDB prompt string contains escape char. Parse for arg.
|
||
Two consecutive escape chars followed by arg followed by
|
||
a comma means to insert the arg using a default format.
|
||
Otherwise a printf format string may be included between
|
||
the two escape chars. eg:
|
||
%%foo, insert foo using default format
|
||
%2.2f%foo, insert foo using "%2.2f" format
|
||
A mismatch between the format string and the data type
|
||
of "foo" is an error (which we don't know how to protect
|
||
against). */
|
||
|
||
fmt[0] = '\0'; /* assume null format string */
|
||
if (promptp[1] == gdb_prompt_escape) /* double esc char */
|
||
{
|
||
promptp += 2; /* skip past two escape chars. */
|
||
}
|
||
else
|
||
{
|
||
/* extract format string from between two esc chars */
|
||
i = 0;
|
||
do
|
||
{
|
||
fmt[i++] = *promptp++; /* copy format string */
|
||
}
|
||
while (i < sizeof (fmt) - 1 &&
|
||
*promptp != gdb_prompt_escape &&
|
||
*promptp != '\0');
|
||
|
||
if (*promptp != gdb_prompt_escape)
|
||
error ("Syntax error at prompt position %d",
|
||
promptp - local_prompt);
|
||
else
|
||
{
|
||
promptp++; /* skip second escape char */
|
||
fmt[i++] = '\0'; /* terminate the format string */
|
||
}
|
||
}
|
||
|
||
arg_val = parse_to_comma_and_eval (&promptp);
|
||
if (*promptp == ',')
|
||
promptp++; /* skip past the comma */
|
||
arg_type = check_typedef (VALUE_TYPE (arg_val));
|
||
switch (TYPE_CODE (arg_type))
|
||
{
|
||
case TYPE_CODE_ARRAY:
|
||
elt_type = check_typedef (TYPE_TARGET_TYPE (arg_type));
|
||
if (TYPE_LENGTH (arg_type) > 0 &&
|
||
TYPE_LENGTH (elt_type) == 1 &&
|
||
TYPE_CODE (elt_type) == TYPE_CODE_INT)
|
||
{
|
||
int len = TYPE_LENGTH (arg_type);
|
||
|
||
if (VALUE_LAZY (arg_val))
|
||
value_fetch_lazy (arg_val);
|
||
tmp = VALUE_CONTENTS (arg_val);
|
||
|
||
if (len > available)
|
||
len = available; /* overflow protect */
|
||
|
||
/* FIXME: how to protect GDB from crashing
|
||
from bad user-supplied format string? */
|
||
if (fmt[0] != 0)
|
||
sprintf (outp, fmt, tmp);
|
||
else
|
||
strncpy (outp, tmp, len);
|
||
outp[len] = '\0';
|
||
}
|
||
break;
|
||
case TYPE_CODE_PTR:
|
||
elt_type = check_typedef (TYPE_TARGET_TYPE (arg_type));
|
||
addrval = value_as_pointer (arg_val);
|
||
|
||
if (TYPE_LENGTH (elt_type) == 1 &&
|
||
TYPE_CODE (elt_type) == TYPE_CODE_INT &&
|
||
addrval != 0)
|
||
{
|
||
/* display it as a string */
|
||
char *default_fmt = "%s";
|
||
char *tmp;
|
||
int err = 0;
|
||
|
||
/* Limiting the number of bytes that the following call
|
||
will read protects us from sprintf overflow later. */
|
||
i = target_read_string (addrval, /* src */
|
||
&tmp, /* dest */
|
||
available, /* len */
|
||
&err);
|
||
if (err) /* read failed */
|
||
error ("%s on target_read", safe_strerror (err));
|
||
|
||
tmp[i] = '\0'; /* force-terminate string */
|
||
/* FIXME: how to protect GDB from crashing
|
||
from bad user-supplied format string? */
|
||
sprintf (outp, fmt[0] == 0 ? default_fmt : fmt,
|
||
tmp);
|
||
free (tmp);
|
||
}
|
||
else
|
||
{
|
||
/* display it as a pointer */
|
||
char *default_fmt = "0x%x";
|
||
|
||
/* FIXME: how to protect GDB from crashing
|
||
from bad user-supplied format string? */
|
||
if (available >= 16 /*? */ ) /* overflow protect */
|
||
sprintf (outp, fmt[0] == 0 ? default_fmt : fmt,
|
||
(long) addrval);
|
||
}
|
||
break;
|
||
case TYPE_CODE_FLT:
|
||
{
|
||
char *default_fmt = "%g";
|
||
|
||
doubleval = value_as_double (arg_val);
|
||
/* FIXME: how to protect GDB from crashing
|
||
from bad user-supplied format string? */
|
||
if (available >= 16 /*? */ ) /* overflow protect */
|
||
sprintf (outp, fmt[0] == 0 ? default_fmt : fmt,
|
||
(double) doubleval);
|
||
break;
|
||
}
|
||
case TYPE_CODE_INT:
|
||
{
|
||
char *default_fmt = "%d";
|
||
|
||
longval = value_as_long (arg_val);
|
||
/* FIXME: how to protect GDB from crashing
|
||
from bad user-supplied format string? */
|
||
if (available >= 16 /*? */ ) /* overflow protect */
|
||
sprintf (outp, fmt[0] == 0 ? default_fmt : fmt,
|
||
(long) longval);
|
||
break;
|
||
}
|
||
case TYPE_CODE_BOOL:
|
||
{
|
||
/* no default format for bool */
|
||
longval = value_as_long (arg_val);
|
||
if (available >= 8 /*? */ ) /* overflow protect */
|
||
{
|
||
if (longval)
|
||
strcpy (outp, "<true>");
|
||
else
|
||
strcpy (outp, "<false>");
|
||
}
|
||
break;
|
||
}
|
||
case TYPE_CODE_ENUM:
|
||
{
|
||
/* no default format for enum */
|
||
longval = value_as_long (arg_val);
|
||
len = TYPE_NFIELDS (arg_type);
|
||
/* find enum name if possible */
|
||
for (i = 0; i < len; i++)
|
||
if (TYPE_FIELD_BITPOS (arg_type, i) == longval)
|
||
break; /* match -- end loop */
|
||
|
||
if (i < len) /* enum name found */
|
||
{
|
||
char *name = TYPE_FIELD_NAME (arg_type, i);
|
||
|
||
strncpy (outp, name, available);
|
||
/* in casel available < strlen (name), */
|
||
outp[available] = '\0';
|
||
}
|
||
else
|
||
{
|
||
if (available >= 16 /*? */ ) /* overflow protect */
|
||
sprintf (outp, "%ld", (long) longval);
|
||
}
|
||
break;
|
||
}
|
||
case TYPE_CODE_VOID:
|
||
*outp = '\0';
|
||
break; /* void type -- no output */
|
||
default:
|
||
error ("bad data type at prompt position %d",
|
||
promptp - local_prompt);
|
||
break;
|
||
}
|
||
outp += strlen (outp);
|
||
}
|
||
}
|
||
*outp++ = '\0'; /* terminate prompt string */
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
char *
|
||
get_prompt ()
|
||
{
|
||
static char buf[MAX_PROMPT_SIZE];
|
||
|
||
if (catch_errors (get_prompt_1, buf, "bad formatted prompt: ",
|
||
RETURN_MASK_ALL))
|
||
{
|
||
return &buf[0]; /* successful formatted prompt */
|
||
}
|
||
else
|
||
{
|
||
/* Prompt could not be formatted. */
|
||
if (async_p)
|
||
return PROMPT (0);
|
||
else
|
||
return gdb_prompt_string;
|
||
}
|
||
}
|
||
|
||
void
|
||
set_prompt (s)
|
||
char *s;
|
||
{
|
||
/* ??rehrauer: I don't know why this fails, since it looks as though
|
||
assignments to prompt are wrapped in calls to savestring...
|
||
if (prompt != NULL)
|
||
free (prompt);
|
||
*/
|
||
if (async_p)
|
||
PROMPT (0) = savestring (s, strlen (s));
|
||
else
|
||
gdb_prompt_string = savestring (s, strlen (s));
|
||
}
|
||
|
||
|
||
/* If necessary, make the user confirm that we should quit. Return
|
||
non-zero if we should quit, zero if we shouldn't. */
|
||
|
||
int
|
||
quit_confirm ()
|
||
{
|
||
if (inferior_pid != 0 && target_has_execution)
|
||
{
|
||
char *s;
|
||
|
||
/* This is something of a hack. But there's no reliable way to
|
||
see if a GUI is running. The `use_windows' variable doesn't
|
||
cut it. */
|
||
if (init_ui_hook)
|
||
s = "A debugging session is active.\nDo you still want to close the debugger?";
|
||
else if (attach_flag)
|
||
s = "The program is running. Quit anyway (and detach it)? ";
|
||
else
|
||
s = "The program is running. Exit anyway? ";
|
||
|
||
if (!query (s))
|
||
return 0;
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Quit without asking for confirmation. */
|
||
|
||
void
|
||
quit_force (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
int exit_code = 0;
|
||
|
||
/* An optional expression may be used to cause gdb to terminate with the
|
||
value of that expression. */
|
||
if (args)
|
||
{
|
||
value_ptr val = parse_and_eval (args);
|
||
|
||
exit_code = (int) value_as_long (val);
|
||
}
|
||
|
||
if (inferior_pid != 0 && target_has_execution)
|
||
{
|
||
if (attach_flag)
|
||
target_detach (args, from_tty);
|
||
else
|
||
target_kill ();
|
||
}
|
||
|
||
/* UDI wants this, to kill the TIP. */
|
||
target_close (1);
|
||
|
||
/* Save the history information if it is appropriate to do so. */
|
||
if (write_history_p && history_filename)
|
||
write_history (history_filename);
|
||
|
||
do_final_cleanups (ALL_CLEANUPS); /* Do any final cleanups before exiting */
|
||
|
||
#if defined(TUI)
|
||
/* tuiDo((TuiOpaqueFuncPtr)tuiCleanUp); */
|
||
/* The above does not need to be inside a tuiDo(), since
|
||
* it is not manipulating the curses screen, but rather,
|
||
* it is tearing it down.
|
||
*/
|
||
if (tui_version)
|
||
tuiCleanUp ();
|
||
#endif
|
||
|
||
exit (exit_code);
|
||
}
|
||
|
||
/* Handle the quit command. */
|
||
|
||
void
|
||
quit_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
if (!quit_confirm ())
|
||
error ("Not confirmed.");
|
||
quit_force (args, from_tty);
|
||
}
|
||
|
||
/* Returns whether GDB is running on a terminal and whether the user
|
||
desires that questions be asked of them on that terminal. */
|
||
|
||
int
|
||
input_from_terminal_p ()
|
||
{
|
||
return gdb_has_a_terminal () && (instream == stdin) & caution;
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
pwd_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
if (args)
|
||
error ("The \"pwd\" command does not take an argument: %s", args);
|
||
getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
|
||
|
||
if (!STREQ (gdb_dirbuf, current_directory))
|
||
printf_unfiltered ("Working directory %s\n (canonically %s).\n",
|
||
current_directory, gdb_dirbuf);
|
||
else
|
||
printf_unfiltered ("Working directory %s.\n", current_directory);
|
||
}
|
||
|
||
void
|
||
cd_command (dir, from_tty)
|
||
char *dir;
|
||
int from_tty;
|
||
{
|
||
int len;
|
||
/* Found something other than leading repetitions of "/..". */
|
||
int found_real_path;
|
||
char *p;
|
||
|
||
/* If the new directory is absolute, repeat is a no-op; if relative,
|
||
repeat might be useful but is more likely to be a mistake. */
|
||
dont_repeat ();
|
||
|
||
if (dir == 0)
|
||
error_no_arg ("new working directory");
|
||
|
||
dir = tilde_expand (dir);
|
||
make_cleanup (free, dir);
|
||
|
||
if (chdir (dir) < 0)
|
||
perror_with_name (dir);
|
||
|
||
#if defined(_WIN32) || defined(__MSDOS__)
|
||
/* There's too much mess with DOSish names like "d:", "d:.",
|
||
"d:./foo" etc. Instead of having lots of special #ifdef'ed code,
|
||
simply get the canonicalized name of the current directory. */
|
||
dir = getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
|
||
#endif
|
||
|
||
len = strlen (dir);
|
||
if (SLASH_P (dir[len-1]))
|
||
{
|
||
/* Remove the trailing slash unless this is a root directory
|
||
(including a drive letter on non-Unix systems). */
|
||
if (!(len == 1) /* "/" */
|
||
#if defined(_WIN32) || defined(__MSDOS__)
|
||
&& !(!SLASH_P (*dir) && ROOTED_P (dir) && len <= 3) /* "d:/" */
|
||
#endif
|
||
)
|
||
len--;
|
||
}
|
||
|
||
dir = savestring (dir, len);
|
||
if (ROOTED_P (dir))
|
||
current_directory = dir;
|
||
else
|
||
{
|
||
if (SLASH_P (current_directory[strlen (current_directory) - 1]))
|
||
current_directory = concat (current_directory, dir, NULL);
|
||
else
|
||
current_directory = concat (current_directory, SLASH_STRING, dir, NULL);
|
||
free (dir);
|
||
}
|
||
|
||
/* Now simplify any occurrences of `.' and `..' in the pathname. */
|
||
|
||
found_real_path = 0;
|
||
for (p = current_directory; *p;)
|
||
{
|
||
if (SLASH_P (p[0]) && p[1] == '.' && (p[2] == 0 || SLASH_P (p[2])))
|
||
strcpy (p, p + 2);
|
||
else if (SLASH_P (p[0]) && p[1] == '.' && p[2] == '.'
|
||
&& (p[3] == 0 || SLASH_P (p[3])))
|
||
{
|
||
if (found_real_path)
|
||
{
|
||
/* Search backwards for the directory just before the "/.."
|
||
and obliterate it and the "/..". */
|
||
char *q = p;
|
||
while (q != current_directory && !SLASH_P (q[-1]))
|
||
--q;
|
||
|
||
if (q == current_directory)
|
||
/* current_directory is
|
||
a relative pathname ("can't happen"--leave it alone). */
|
||
++p;
|
||
else
|
||
{
|
||
strcpy (q - 1, p + 3);
|
||
p = q - 1;
|
||
}
|
||
}
|
||
else
|
||
/* We are dealing with leading repetitions of "/..", for example
|
||
"/../..", which is the Mach super-root. */
|
||
p += 3;
|
||
}
|
||
else
|
||
{
|
||
found_real_path = 1;
|
||
++p;
|
||
}
|
||
}
|
||
|
||
forget_cached_source_info ();
|
||
|
||
if (from_tty)
|
||
pwd_command ((char *) 0, 1);
|
||
}
|
||
|
||
struct source_cleanup_lines_args
|
||
{
|
||
int old_line;
|
||
char *old_file;
|
||
char *old_pre_error;
|
||
char *old_error_pre_print;
|
||
};
|
||
|
||
static void
|
||
source_cleanup_lines (args)
|
||
PTR args;
|
||
{
|
||
struct source_cleanup_lines_args *p =
|
||
(struct source_cleanup_lines_args *) args;
|
||
source_line_number = p->old_line;
|
||
source_file_name = p->old_file;
|
||
source_pre_error = p->old_pre_error;
|
||
error_pre_print = p->old_error_pre_print;
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
void
|
||
source_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
FILE *stream;
|
||
struct cleanup *old_cleanups;
|
||
char *file = args;
|
||
struct source_cleanup_lines_args old_lines;
|
||
int needed_length;
|
||
|
||
if (file == NULL)
|
||
{
|
||
error ("source command requires pathname of file to source.");
|
||
}
|
||
|
||
file = tilde_expand (file);
|
||
old_cleanups = make_cleanup (free, file);
|
||
|
||
stream = fopen (file, FOPEN_RT);
|
||
if (!stream)
|
||
{
|
||
if (from_tty)
|
||
perror_with_name (file);
|
||
else
|
||
return;
|
||
}
|
||
|
||
make_cleanup ((make_cleanup_func) fclose, stream);
|
||
|
||
old_lines.old_line = source_line_number;
|
||
old_lines.old_file = source_file_name;
|
||
old_lines.old_pre_error = source_pre_error;
|
||
old_lines.old_error_pre_print = error_pre_print;
|
||
make_cleanup (source_cleanup_lines, &old_lines);
|
||
source_line_number = 0;
|
||
source_file_name = file;
|
||
source_pre_error = error_pre_print == NULL ? "" : error_pre_print;
|
||
source_pre_error = savestring (source_pre_error, strlen (source_pre_error));
|
||
make_cleanup (free, source_pre_error);
|
||
/* This will get set every time we read a line. So it won't stay "" for
|
||
long. */
|
||
error_pre_print = "";
|
||
|
||
needed_length = strlen (source_file_name) + strlen (source_pre_error) + 80;
|
||
if (source_error_allocated < needed_length)
|
||
{
|
||
source_error_allocated *= 2;
|
||
if (source_error_allocated < needed_length)
|
||
source_error_allocated = needed_length;
|
||
if (source_error == NULL)
|
||
source_error = xmalloc (source_error_allocated);
|
||
else
|
||
source_error = xrealloc (source_error, source_error_allocated);
|
||
}
|
||
|
||
read_command_file (stream);
|
||
|
||
do_cleanups (old_cleanups);
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
echo_command (text, from_tty)
|
||
char *text;
|
||
int from_tty;
|
||
{
|
||
char *p = text;
|
||
register int c;
|
||
|
||
if (text)
|
||
while ((c = *p++) != '\0')
|
||
{
|
||
if (c == '\\')
|
||
{
|
||
/* \ at end of argument is used after spaces
|
||
so they won't be lost. */
|
||
if (*p == 0)
|
||
return;
|
||
|
||
c = parse_escape (&p);
|
||
if (c >= 0)
|
||
printf_filtered ("%c", c);
|
||
}
|
||
else
|
||
printf_filtered ("%c", c);
|
||
}
|
||
|
||
/* Force this output to appear now. */
|
||
wrap_here ("");
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
dont_repeat_command (ignored, from_tty)
|
||
char *ignored;
|
||
int from_tty;
|
||
{
|
||
*line = 0; /* Can't call dont_repeat here because we're not
|
||
necessarily reading from stdin. */
|
||
}
|
||
|
||
/* Functions to manipulate command line editing control variables. */
|
||
|
||
/* Number of commands to print in each call to show_commands. */
|
||
#define Hist_print 10
|
||
static void
|
||
show_commands (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
/* Index for history commands. Relative to history_base. */
|
||
int offset;
|
||
|
||
/* Number of the history entry which we are planning to display next.
|
||
Relative to history_base. */
|
||
static int num = 0;
|
||
|
||
/* The first command in the history which doesn't exist (i.e. one more
|
||
than the number of the last command). Relative to history_base. */
|
||
int hist_len;
|
||
|
||
extern HIST_ENTRY *history_get PARAMS ((int));
|
||
|
||
/* Print out some of the commands from the command history. */
|
||
/* First determine the length of the history list. */
|
||
hist_len = history_size;
|
||
for (offset = 0; offset < history_size; offset++)
|
||
{
|
||
if (!history_get (history_base + offset))
|
||
{
|
||
hist_len = offset;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (args)
|
||
{
|
||
if (args[0] == '+' && args[1] == '\0')
|
||
/* "info editing +" should print from the stored position. */
|
||
;
|
||
else
|
||
/* "info editing <exp>" should print around command number <exp>. */
|
||
num = (parse_and_eval_address (args) - history_base) - Hist_print / 2;
|
||
}
|
||
/* "show commands" means print the last Hist_print commands. */
|
||
else
|
||
{
|
||
num = hist_len - Hist_print;
|
||
}
|
||
|
||
if (num < 0)
|
||
num = 0;
|
||
|
||
/* If there are at least Hist_print commands, we want to display the last
|
||
Hist_print rather than, say, the last 6. */
|
||
if (hist_len - num < Hist_print)
|
||
{
|
||
num = hist_len - Hist_print;
|
||
if (num < 0)
|
||
num = 0;
|
||
}
|
||
|
||
for (offset = num; offset < num + Hist_print && offset < hist_len; offset++)
|
||
{
|
||
printf_filtered ("%5d %s\n", history_base + offset,
|
||
(history_get (history_base + offset))->line);
|
||
}
|
||
|
||
/* The next command we want to display is the next one that we haven't
|
||
displayed yet. */
|
||
num += Hist_print;
|
||
|
||
/* If the user repeats this command with return, it should do what
|
||
"show commands +" does. This is unnecessary if arg is null,
|
||
because "show commands +" is not useful after "show commands". */
|
||
if (from_tty && args)
|
||
{
|
||
args[0] = '+';
|
||
args[1] = '\0';
|
||
}
|
||
}
|
||
|
||
/* Called by do_setshow_command. */
|
||
/* ARGSUSED */
|
||
static void
|
||
set_history_size_command (args, from_tty, c)
|
||
char *args;
|
||
int from_tty;
|
||
struct cmd_list_element *c;
|
||
{
|
||
if (history_size == INT_MAX)
|
||
unstifle_history ();
|
||
else if (history_size >= 0)
|
||
stifle_history (history_size);
|
||
else
|
||
{
|
||
history_size = INT_MAX;
|
||
error ("History size must be non-negative");
|
||
}
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
set_history (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n");
|
||
help_list (sethistlist, "set history ", -1, gdb_stdout);
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
show_history (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
cmd_show_list (showhistlist, from_tty, "");
|
||
}
|
||
|
||
int info_verbose = 0; /* Default verbose msgs off */
|
||
|
||
/* Called by do_setshow_command. An elaborate joke. */
|
||
/* ARGSUSED */
|
||
static void
|
||
set_verbose (args, from_tty, c)
|
||
char *args;
|
||
int from_tty;
|
||
struct cmd_list_element *c;
|
||
{
|
||
char *cmdname = "verbose";
|
||
struct cmd_list_element *showcmd;
|
||
|
||
showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1);
|
||
|
||
if (info_verbose)
|
||
{
|
||
c->doc = "Set verbose printing of informational messages.";
|
||
showcmd->doc = "Show verbose printing of informational messages.";
|
||
}
|
||
else
|
||
{
|
||
c->doc = "Set verbosity.";
|
||
showcmd->doc = "Show verbosity.";
|
||
}
|
||
}
|
||
|
||
static void
|
||
float_handler (signo)
|
||
int signo;
|
||
{
|
||
/* This message is based on ANSI C, section 4.7. Note that integer
|
||
divide by zero causes this, so "float" is a misnomer. */
|
||
signal (SIGFPE, float_handler);
|
||
error ("Erroneous arithmetic operation.");
|
||
}
|
||
|
||
|
||
static void
|
||
init_cmd_lists ()
|
||
{
|
||
cmdlist = NULL;
|
||
infolist = NULL;
|
||
enablelist = NULL;
|
||
disablelist = NULL;
|
||
togglelist = NULL;
|
||
stoplist = NULL;
|
||
deletelist = NULL;
|
||
enablebreaklist = NULL;
|
||
setlist = NULL;
|
||
unsetlist = NULL;
|
||
showlist = NULL;
|
||
sethistlist = NULL;
|
||
showhistlist = NULL;
|
||
unsethistlist = NULL;
|
||
maintenancelist = NULL;
|
||
maintenanceinfolist = NULL;
|
||
maintenanceprintlist = NULL;
|
||
setprintlist = NULL;
|
||
showprintlist = NULL;
|
||
setchecklist = NULL;
|
||
showchecklist = NULL;
|
||
}
|
||
|
||
/* Init the history buffer. Note that we are called after the init file(s)
|
||
* have been read so that the user can change the history file via his
|
||
* .gdbinit file (for instance). The GDBHISTFILE environment variable
|
||
* overrides all of this.
|
||
*/
|
||
|
||
void
|
||
init_history ()
|
||
{
|
||
char *tmpenv;
|
||
|
||
tmpenv = getenv ("HISTSIZE");
|
||
if (tmpenv)
|
||
history_size = atoi (tmpenv);
|
||
else if (!history_size)
|
||
history_size = 256;
|
||
|
||
stifle_history (history_size);
|
||
|
||
tmpenv = getenv ("GDBHISTFILE");
|
||
if (tmpenv)
|
||
history_filename = savestring (tmpenv, strlen (tmpenv));
|
||
else if (!history_filename)
|
||
{
|
||
/* We include the current directory so that if the user changes
|
||
directories the file written will be the same as the one
|
||
that was read. */
|
||
#ifdef __MSDOS__
|
||
/* No leading dots in file names are allowed on MSDOS. */
|
||
history_filename = concat (current_directory, "/_gdb_history", NULL);
|
||
#else
|
||
history_filename = concat (current_directory, "/.gdb_history", NULL);
|
||
#endif
|
||
}
|
||
read_history (history_filename);
|
||
}
|
||
|
||
static void
|
||
init_main ()
|
||
{
|
||
struct cmd_list_element *c;
|
||
|
||
/* If we are running the asynchronous version,
|
||
we initialize the prompts differently. */
|
||
if (!async_p)
|
||
{
|
||
gdb_prompt_string = savestring (DEFAULT_PROMPT, strlen (DEFAULT_PROMPT));
|
||
}
|
||
else
|
||
{
|
||
/* initialize the prompt stack to a simple "(gdb) " prompt or to
|
||
whatever the DEFAULT_PROMPT is. */
|
||
the_prompts.top = 0;
|
||
PREFIX (0) = "";
|
||
PROMPT (0) = savestring (DEFAULT_PROMPT, strlen (DEFAULT_PROMPT));
|
||
SUFFIX (0) = "";
|
||
/* Set things up for annotation_level > 1, if the user ever decides
|
||
to use it. */
|
||
async_annotation_suffix = "prompt";
|
||
/* Set the variable associated with the setshow prompt command. */
|
||
new_async_prompt = savestring (PROMPT (0), strlen (PROMPT (0)));
|
||
}
|
||
gdb_prompt_escape = 0; /* default to none. */
|
||
|
||
/* Set the important stuff up for command editing. */
|
||
command_editing_p = 1;
|
||
history_expansion_p = 0;
|
||
write_history_p = 0;
|
||
|
||
/* Setup important stuff for command line editing. */
|
||
rl_completion_entry_function = (int (*)()) readline_line_completion_function;
|
||
rl_completer_word_break_characters = gdb_completer_word_break_characters;
|
||
rl_completer_quote_characters = gdb_completer_quote_characters;
|
||
rl_readline_name = "gdb";
|
||
|
||
/* Define the classes of commands.
|
||
They will appear in the help list in the reverse of this order. */
|
||
|
||
add_cmd ("internals", class_maintenance, NO_FUNCTION,
|
||
"Maintenance commands.\n\
|
||
Some gdb commands are provided just for use by gdb maintainers.\n\
|
||
These commands are subject to frequent change, and may not be as\n\
|
||
well documented as user commands.",
|
||
&cmdlist);
|
||
add_cmd ("obscure", class_obscure, NO_FUNCTION, "Obscure features.", &cmdlist);
|
||
add_cmd ("aliases", class_alias, NO_FUNCTION, "Aliases of other commands.", &cmdlist);
|
||
add_cmd ("user-defined", class_user, NO_FUNCTION, "User-defined commands.\n\
|
||
The commands in this class are those defined by the user.\n\
|
||
Use the \"define\" command to define a command.", &cmdlist);
|
||
add_cmd ("support", class_support, NO_FUNCTION, "Support facilities.", &cmdlist);
|
||
if (!dbx_commands)
|
||
add_cmd ("status", class_info, NO_FUNCTION, "Status inquiries.", &cmdlist);
|
||
add_cmd ("files", class_files, NO_FUNCTION, "Specifying and examining files.", &cmdlist);
|
||
add_cmd ("breakpoints", class_breakpoint, NO_FUNCTION, "Making program stop at certain points.", &cmdlist);
|
||
add_cmd ("data", class_vars, NO_FUNCTION, "Examining data.", &cmdlist);
|
||
add_cmd ("stack", class_stack, NO_FUNCTION, "Examining the stack.\n\
|
||
The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\
|
||
counting from zero for the innermost (currently executing) frame.\n\n\
|
||
At any time gdb identifies one frame as the \"selected\" frame.\n\
|
||
Variable lookups are done with respect to the selected frame.\n\
|
||
When the program being debugged stops, gdb selects the innermost frame.\n\
|
||
The commands below can be used to select other frames by number or address.",
|
||
&cmdlist);
|
||
add_cmd ("running", class_run, NO_FUNCTION, "Running the program.", &cmdlist);
|
||
|
||
add_com ("pwd", class_files, pwd_command,
|
||
"Print working directory. This is used for your program as well.");
|
||
c = add_cmd ("cd", class_files, cd_command,
|
||
"Set working directory to DIR for debugger and program being debugged.\n\
|
||
The change does not take effect for the program being debugged\n\
|
||
until the next time it is started.", &cmdlist);
|
||
c->completer = filename_completer;
|
||
|
||
/* The set prompt command is different depending whether or not the
|
||
async version is run. NOTE: this difference is going to
|
||
disappear as we make the event loop be the default engine of
|
||
gdb. */
|
||
if (!async_p)
|
||
{
|
||
add_show_from_set
|
||
(add_set_cmd ("prompt", class_support, var_string,
|
||
(char *) &gdb_prompt_string, "Set gdb's prompt",
|
||
&setlist),
|
||
&showlist);
|
||
}
|
||
else
|
||
{
|
||
c = add_set_cmd ("prompt", class_support, var_string,
|
||
(char *) &new_async_prompt, "Set gdb's prompt",
|
||
&setlist);
|
||
add_show_from_set (c, &showlist);
|
||
c->function.sfunc = set_async_prompt;
|
||
}
|
||
|
||
add_show_from_set
|
||
(add_set_cmd ("prompt-escape-char", class_support, var_zinteger,
|
||
(char *) &gdb_prompt_escape,
|
||
"Set escape character for formatting of gdb's prompt",
|
||
&setlist),
|
||
&showlist);
|
||
|
||
add_com ("echo", class_support, echo_command,
|
||
"Print a constant string. Give string as argument.\n\
|
||
C escape sequences may be used in the argument.\n\
|
||
No newline is added at the end of the argument;\n\
|
||
use \"\\n\" if you want a newline to be printed.\n\
|
||
Since leading and trailing whitespace are ignored in command arguments,\n\
|
||
if you want to print some you must use \"\\\" before leading whitespace\n\
|
||
to be printed or after trailing whitespace.");
|
||
add_com ("document", class_support, document_command,
|
||
"Document a user-defined command.\n\
|
||
Give command name as argument. Give documentation on following lines.\n\
|
||
End with a line of just \"end\".");
|
||
add_com ("define", class_support, define_command,
|
||
"Define a new command name. Command name is argument.\n\
|
||
Definition appears on following lines, one command per line.\n\
|
||
End with a line of just \"end\".\n\
|
||
Use the \"document\" command to give documentation for the new command.\n\
|
||
Commands defined in this way may have up to ten arguments.");
|
||
|
||
#ifdef __STDC__
|
||
c = add_cmd ("source", class_support, source_command,
|
||
"Read commands from a file named FILE.\n\
|
||
Note that the file \"" GDBINIT_FILENAME "\" is read automatically in this way\n\
|
||
when gdb is started.", &cmdlist);
|
||
#else
|
||
/* Punt file name, we can't help it easily. */
|
||
c = add_cmd ("source", class_support, source_command,
|
||
"Read commands from a file named FILE.\n\
|
||
Note that the file \".gdbinit\" is read automatically in this way\n\
|
||
when gdb is started.", &cmdlist);
|
||
#endif
|
||
c->completer = filename_completer;
|
||
|
||
add_com ("quit", class_support, quit_command, "Exit gdb.");
|
||
add_com ("help", class_support, help_command, "Print list of commands.");
|
||
add_com_alias ("q", "quit", class_support, 1);
|
||
add_com_alias ("h", "help", class_support, 1);
|
||
|
||
add_com ("dont-repeat", class_support, dont_repeat_command, "Don't repeat this command.\n\
|
||
Primarily used inside of user-defined commands that should not be repeated when\n\
|
||
hitting return.");
|
||
|
||
c = add_set_cmd ("verbose", class_support, var_boolean, (char *) &info_verbose,
|
||
"Set ",
|
||
&setlist),
|
||
add_show_from_set (c, &showlist);
|
||
c->function.sfunc = set_verbose;
|
||
set_verbose (NULL, 0, c);
|
||
|
||
/* The set editing command is different depending whether or not the
|
||
async version is run. NOTE: this difference is going to disappear
|
||
as we make the event loop be the default engine of gdb. */
|
||
if (!async_p)
|
||
{
|
||
add_show_from_set
|
||
(add_set_cmd ("editing", class_support, var_boolean, (char *) &command_editing_p,
|
||
"Set editing of command lines as they are typed.\n\
|
||
Use \"on\" to enable the editing, and \"off\" to disable it.\n\
|
||
Without an argument, command line editing is enabled. To edit, use\n\
|
||
EMACS-like or VI-like commands like control-P or ESC.", &setlist),
|
||
&showlist);
|
||
}
|
||
else
|
||
{
|
||
c = add_set_cmd ("editing", class_support, var_boolean, (char *) &async_command_editing_p,
|
||
"Set editing of command lines as they are typed.\n\
|
||
Use \"on\" to enable the editing, and \"off\" to disable it.\n\
|
||
Without an argument, command line editing is enabled. To edit, use\n\
|
||
EMACS-like or VI-like commands like control-P or ESC.", &setlist);
|
||
|
||
add_show_from_set (c, &showlist);
|
||
c->function.sfunc = set_async_editing_command;
|
||
}
|
||
|
||
add_prefix_cmd ("history", class_support, set_history,
|
||
"Generic command for setting command history parameters.",
|
||
&sethistlist, "set history ", 0, &setlist);
|
||
add_prefix_cmd ("history", class_support, show_history,
|
||
"Generic command for showing command history parameters.",
|
||
&showhistlist, "show history ", 0, &showlist);
|
||
|
||
add_show_from_set
|
||
(add_set_cmd ("expansion", no_class, var_boolean, (char *) &history_expansion_p,
|
||
"Set history expansion on command input.\n\
|
||
Without an argument, history expansion is enabled.", &sethistlist),
|
||
&showhistlist);
|
||
|
||
add_show_from_set
|
||
(add_set_cmd ("save", no_class, var_boolean, (char *) &write_history_p,
|
||
"Set saving of the history record on exit.\n\
|
||
Use \"on\" to enable the saving, and \"off\" to disable it.\n\
|
||
Without an argument, saving is enabled.", &sethistlist),
|
||
&showhistlist);
|
||
|
||
c = add_set_cmd ("size", no_class, var_integer, (char *) &history_size,
|
||
"Set the size of the command history, \n\
|
||
ie. the number of previous commands to keep a record of.", &sethistlist);
|
||
add_show_from_set (c, &showhistlist);
|
||
c->function.sfunc = set_history_size_command;
|
||
|
||
add_show_from_set
|
||
(add_set_cmd ("filename", no_class, var_filename, (char *) &history_filename,
|
||
"Set the filename in which to record the command history\n\
|
||
(the list of previous commands of which a record is kept).", &sethistlist),
|
||
&showhistlist);
|
||
|
||
add_show_from_set
|
||
(add_set_cmd ("confirm", class_support, var_boolean,
|
||
(char *) &caution,
|
||
"Set whether to confirm potentially dangerous operations.",
|
||
&setlist),
|
||
&showlist);
|
||
|
||
add_prefix_cmd ("info", class_info, info_command,
|
||
"Generic command for showing things about the program being debugged.",
|
||
&infolist, "info ", 0, &cmdlist);
|
||
add_com_alias ("i", "info", class_info, 1);
|
||
|
||
add_com ("complete", class_obscure, complete_command,
|
||
"List the completions for the rest of the line as a command.");
|
||
|
||
add_prefix_cmd ("show", class_info, show_command,
|
||
"Generic command for showing things about the debugger.",
|
||
&showlist, "show ", 0, &cmdlist);
|
||
/* Another way to get at the same thing. */
|
||
add_info ("set", show_command, "Show all GDB settings.");
|
||
|
||
add_cmd ("commands", no_class, show_commands,
|
||
"Show the history of commands you typed.\n\
|
||
You can supply a command number to start with, or a `+' to start after\n\
|
||
the previous command number shown.",
|
||
&showlist);
|
||
|
||
add_cmd ("version", no_class, show_version,
|
||
"Show what version of GDB this is.", &showlist);
|
||
|
||
add_com ("while", class_support, while_command,
|
||
"Execute nested commands WHILE the conditional expression is non zero.\n\
|
||
The conditional expression must follow the word `while' and must in turn be\n\
|
||
followed by a new line. The nested commands must be entered one per line,\n\
|
||
and should be terminated by the word `end'.");
|
||
|
||
add_com ("if", class_support, if_command,
|
||
"Execute nested commands once IF the conditional expression is non zero.\n\
|
||
The conditional expression must follow the word `if' and must in turn be\n\
|
||
followed by a new line. The nested commands must be entered one per line,\n\
|
||
and should be terminated by the word 'else' or `end'. If an else clause\n\
|
||
is used, the same rules apply to its nested commands as to the first ones.");
|
||
|
||
/* If target is open when baud changes, it doesn't take effect until the
|
||
next open (I think, not sure). */
|
||
add_show_from_set (add_set_cmd ("remotebaud", no_class,
|
||
var_zinteger, (char *) &baud_rate,
|
||
"Set baud rate for remote serial I/O.\n\
|
||
This value is used to set the speed of the serial port when debugging\n\
|
||
using remote targets.", &setlist),
|
||
&showlist);
|
||
|
||
add_show_from_set (
|
||
add_set_cmd ("remotedebug", no_class, var_zinteger, (char *) &remote_debug,
|
||
"Set debugging of remote protocol.\n\
|
||
When enabled, each packet sent or received with the remote target\n\
|
||
is displayed.", &setlist),
|
||
&showlist);
|
||
|
||
add_show_from_set (
|
||
add_set_cmd ("remotetimeout", no_class, var_integer, (char *) &remote_timeout,
|
||
"Set timeout limit to wait for target to respond.\n\
|
||
This value is used to set the time limit for gdb to wait for a response\n\
|
||
from the target.", &setlist),
|
||
&showlist);
|
||
|
||
/* The set annotate command is different depending whether or not
|
||
the async version is run. NOTE: this difference is going to
|
||
disappear as we make the event loop be the default engine of
|
||
gdb. */
|
||
if (!async_p)
|
||
{
|
||
c = add_set_cmd ("annotate", class_obscure, var_zinteger,
|
||
(char *) &annotation_level, "Set annotation_level.\n\
|
||
0 == normal; 1 == fullname (for use when running under emacs)\n\
|
||
2 == output annotated suitably for use by programs that control GDB.",
|
||
&setlist);
|
||
c = add_show_from_set (c, &showlist);
|
||
}
|
||
else
|
||
{
|
||
c = add_set_cmd ("annotate", class_obscure, var_zinteger,
|
||
(char *) &annotation_level, "Set annotation_level.\n\
|
||
0 == normal; 1 == fullname (for use when running under emacs)\n\
|
||
2 == output annotated suitably for use by programs that control GDB.",
|
||
&setlist);
|
||
add_show_from_set (c, &showlist);
|
||
c->function.sfunc = set_async_annotation_level;
|
||
}
|
||
if (async_p)
|
||
{
|
||
add_show_from_set
|
||
(add_set_cmd ("exec-done-display", class_support, var_boolean, (char *) &exec_done_display_p,
|
||
"Set notification of completion for asynchronous execution commands.\n\
|
||
Use \"on\" to enable the notification, and \"off\" to disable it.", &setlist),
|
||
&showlist);
|
||
}
|
||
}
|