/* GDB CLI commands.
- Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
+ Copyright 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GDB.
Boston, MA 02111-1307, USA. */
#include "defs.h"
+#include <readline/readline.h>
+#include <readline/tilde.h>
#include "completer.h"
#include "target.h" /* For baud_rate, remote_debug and remote_timeout */
#include "gdb_wait.h" /* For shell escape implementation */
#include "gdb_regex.h" /* Used by apropos_command */
+#include "gdb_string.h"
+#include "gdb_vfork.h"
+#include "linespec.h"
+#include "expression.h"
+#include "frame.h"
+#include "value.h"
+#include "language.h"
#include "filenames.h" /* for DOSish file names */
+#include "objfiles.h"
+#include "source.h"
+#include "disasm.h"
#include "ui-out.h"
#include "cli/cli-setshow.h"
#include "cli/cli-cmds.h"
+#ifdef TUI
+#include "tui/tui.h" /* For tui_active et.al. */
+#endif
+
#ifndef GDBINIT_FILENAME
#define GDBINIT_FILENAME ".gdbinit"
#endif
-/* From gdb/top.c */
-
-extern void dont_repeat (void);
-
-extern void set_verbose (char *, int, struct cmd_list_element *);
-
-extern void show_history (char *, int);
-
-extern void set_history (char *, int);
-
-extern void show_commands (char *, int);
-
-/* Prototypes for local functions */
+/* Prototypes for local command functions */
static void complete_command (char *, int);
static void show_version (char *, int);
-static void validate_comname (char *);
-
static void help_command (char *, int);
static void show_command (char *, int);
static void shell_escape (char *, int);
+static void edit_command (char *, int);
+
+static void list_command (char *, int);
+
void apropos_command (char *, int);
+
+/* Prototypes for local utility functions */
+
+static void ambiguous_line_spec (struct symtabs_and_lines *);
\f
/* Limit the call depth of user-defined commands */
int max_user_call_depth;
/* 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 (char *arg, int from_tty)
{
/* The "show" command with no arguments shows all the settings. */
-/* ARGSUSED */
static void
show_command (char *arg, int from_tty)
{
/* Provide documentation on command or list given by COMMAND. FROM_TTY
is ignored. */
-/* ARGSUSED */
static void
help_command (char *command, int from_tty)
{
/* The "complete" command is used by Emacs to implement completion. */
-/* ARGSUSED */
static void
complete_command (char *arg, int from_tty)
{
int i;
int argpoint;
- char **completions;
+ char **completions, *point, *arg_prefix;
dont_repeat ();
arg = "";
argpoint = strlen (arg);
- completions = complete_line (arg, arg, argpoint);
+ /* complete_line assumes that its first argument is somewhere within,
+ and except for filenames at the beginning of, the word to be completed.
+ The following crude imitation of readline's word-breaking tries to
+ accomodate this. */
+ point = arg + argpoint;
+ while (point > arg)
+ {
+ if (strchr (rl_completer_word_break_characters, point[-1]) != 0)
+ break;
+ point--;
+ }
+
+ arg_prefix = alloca (point - arg + 1);
+ memcpy (arg_prefix, arg, point - arg);
+ arg_prefix[point - arg] = 0;
+
+ completions = complete_line (point, arg, argpoint);
if (completions)
{
while (item < size)
{
int next_item;
- printf_unfiltered ("%s\n", completions[item]);
+ printf_unfiltered ("%s%s\n", arg_prefix, completions[item]);
next_item = item + 1;
while (next_item < size
&& ! strcmp (completions[item], completions[next_item]))
return cmd_cfunc_eq (c, complete_command);
}
-/* ARGSUSED */
static void
show_version (char *args, int from_tty)
{
quit_force (args, from_tty);
}
-/* ARGSUSED */
static void
pwd_command (char *args, int from_tty)
{
error ("The \"pwd\" command does not take an argument: %s", args);
getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
- if (!STREQ (gdb_dirbuf, current_directory))
+ if (strcmp (gdb_dirbuf, current_directory) != 0)
printf_unfiltered ("Working directory %s\n (canonically %s).\n",
current_directory, gdb_dirbuf);
else
do_cleanups (old_cleanups);
}
-/* ARGSUSED */
static void
echo_command (char *text, int from_tty)
{
char *p = text;
- register int c;
+ int c;
if (text)
while ((c = *p++) != '\0')
gdb_flush (gdb_stdout);
}
-/* ARGSUSED */
static void
shell_escape (char *arg, int from_tty)
{
#endif
#else /* Can fork. */
int rc, status, pid;
- char *p, *user_shell;
- if ((user_shell = (char *) getenv ("SHELL")) == NULL)
- user_shell = "/bin/sh";
+ if ((pid = vfork ()) == 0)
+ {
+ char *p, *user_shell;
- /* Get the name of the shell for arg0 */
- if ((p = strrchr (user_shell, '/')) == NULL)
- p = user_shell;
- else
- p++; /* Get past '/' */
+ if ((user_shell = (char *) getenv ("SHELL")) == NULL)
+ user_shell = "/bin/sh";
+
+ /* Get the name of the shell for arg0 */
+ if ((p = strrchr (user_shell, '/')) == NULL)
+ p = user_shell;
+ else
+ p++; /* Get past '/' */
- if ((pid = fork ()) == 0)
- {
if (!arg)
- execl (user_shell, p, 0);
+ execl (user_shell, p, (char *) 0);
else
- execl (user_shell, p, "-c", arg, 0);
+ execl (user_shell, p, "-c", arg, (char *) 0);
fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", user_shell,
safe_strerror (errno));
#endif /* Can fork. */
}
+static void
+edit_command (char *arg, int from_tty)
+{
+ struct symtabs_and_lines sals;
+ struct symtab_and_line sal;
+ struct symbol *sym;
+ char *arg1;
+ int cmdlen, log10;
+ unsigned m;
+ char *editor;
+ char *p;
+
+ /* Pull in the current default source line if necessary */
+ if (arg == 0)
+ {
+ set_default_source_symtab_and_line ();
+ sal = get_current_source_symtab_and_line ();
+ }
+
+ /* bare "edit" edits file with present line. */
+
+ if (arg == 0)
+ {
+ if (sal.symtab == 0)
+ error ("No default source file yet.");
+ sal.line += get_lines_to_list () / 2;
+ }
+ else
+ {
+
+ /* Now should only be one argument -- decode it in SAL */
+
+ arg1 = arg;
+ sals = decode_line_1 (&arg1, 0, 0, 0, 0, 0);
+
+ if (! sals.nelts) return; /* C++ */
+ if (sals.nelts > 1) {
+ ambiguous_line_spec (&sals);
+ xfree (sals.sals);
+ return;
+ }
+
+ sal = sals.sals[0];
+ xfree (sals.sals);
+
+ if (*arg1)
+ error ("Junk at end of line specification.");
+
+ /* if line was specified by address,
+ first print exactly which line, and which file.
+ In this case, sal.symtab == 0 means address is outside
+ of all known source files, not that user failed to give a filename. */
+ if (*arg == '*')
+ {
+ if (sal.symtab == 0)
+ /* FIXME-32x64--assumes sal.pc fits in long. */
+ error ("No source file for address %s.",
+ local_hex_string((unsigned long) sal.pc));
+ sym = find_pc_function (sal.pc);
+ if (sym)
+ {
+ print_address_numeric (sal.pc, 1, gdb_stdout);
+ printf_filtered (" is in ");
+ fputs_filtered (SYMBOL_PRINT_NAME (sym), gdb_stdout);
+ printf_filtered (" (%s:%d).\n", sal.symtab->filename, sal.line);
+ }
+ else
+ {
+ print_address_numeric (sal.pc, 1, gdb_stdout);
+ printf_filtered (" is at %s:%d.\n",
+ sal.symtab->filename, sal.line);
+ }
+ }
+
+ /* If what was given does not imply a symtab, it must be an undebuggable
+ symbol which means no source code. */
+
+ if (sal.symtab == 0)
+ error ("No line number known for %s.", arg);
+ }
+
+ if ((editor = (char *) getenv ("EDITOR")) == NULL)
+ editor = "/bin/ex";
+
+ /* Approximate base-10 log of line to 1 unit for digit count */
+ for(log10=32, m=0x80000000; !(sal.line & m) && log10>0; log10--, m=m>>1);
+ log10 = 1 + (int)((log10 + (0 == ((m-1) & sal.line)))/3.32192809);
+
+ cmdlen = strlen(editor) + 1
+ + (NULL == sal.symtab->dirname ? 0 : strlen(sal.symtab->dirname) + 1)
+ + (NULL == sal.symtab->filename? 0 : strlen(sal.symtab->filename)+ 1)
+ + log10 + 2;
+
+ p = xmalloc(cmdlen);
+ sprintf(p,"%s +%d %s%s",editor,sal.line,
+ (NULL == sal.symtab->dirname ? "./" :
+ (NULL != sal.symtab->filename && *(sal.symtab->filename) != '/') ?
+ sal.symtab->dirname : ""),
+ (NULL == sal.symtab->filename ? "unknown" : sal.symtab->filename)
+ );
+ shell_escape(p, from_tty);
+
+ xfree(p);
+}
+
+static void
+list_command (char *arg, int from_tty)
+{
+ struct symtabs_and_lines sals, sals_end;
+ struct symtab_and_line sal, sal_end, cursal;
+ struct symbol *sym;
+ char *arg1;
+ int no_end = 1;
+ int dummy_end = 0;
+ int dummy_beg = 0;
+ int linenum_beg = 0;
+ char *p;
+
+ /* Pull in the current default source line if necessary */
+ if (arg == 0 || arg[0] == '+' || arg[0] == '-')
+ {
+ set_default_source_symtab_and_line ();
+ cursal = get_current_source_symtab_and_line ();
+ }
+
+ /* "l" or "l +" lists next ten lines. */
+
+ if (arg == 0 || strcmp (arg, "+") == 0)
+ {
+ print_source_lines (cursal.symtab, cursal.line,
+ cursal.line + get_lines_to_list (), 0);
+ return;
+ }
+
+ /* "l -" lists previous ten lines, the ones before the ten just listed. */
+ if (strcmp (arg, "-") == 0)
+ {
+ print_source_lines (cursal.symtab,
+ max (get_first_line_listed () - get_lines_to_list (), 1),
+ get_first_line_listed (), 0);
+ return;
+ }
+
+ /* Now if there is only one argument, decode it in SAL
+ and set NO_END.
+ If there are two arguments, decode them in SAL and SAL_END
+ and clear NO_END; however, if one of the arguments is blank,
+ set DUMMY_BEG or DUMMY_END to record that fact. */
+
+ if (!have_full_symbols () && !have_partial_symbols ())
+ error ("No symbol table is loaded. Use the \"file\" command.");
+
+ arg1 = arg;
+ if (*arg1 == ',')
+ dummy_beg = 1;
+ else
+ {
+ sals = decode_line_1 (&arg1, 0, 0, 0, 0, 0);
+
+ if (!sals.nelts)
+ return; /* C++ */
+ if (sals.nelts > 1)
+ {
+ ambiguous_line_spec (&sals);
+ xfree (sals.sals);
+ return;
+ }
+
+ sal = sals.sals[0];
+ xfree (sals.sals);
+ }
+
+ /* Record whether the BEG arg is all digits. */
+
+ for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++);
+ linenum_beg = (p == arg1);
+
+ while (*arg1 == ' ' || *arg1 == '\t')
+ arg1++;
+ if (*arg1 == ',')
+ {
+ no_end = 0;
+ arg1++;
+ while (*arg1 == ' ' || *arg1 == '\t')
+ arg1++;
+ if (*arg1 == 0)
+ dummy_end = 1;
+ else
+ {
+ if (dummy_beg)
+ sals_end = decode_line_1 (&arg1, 0, 0, 0, 0, 0);
+ else
+ sals_end = decode_line_1 (&arg1, 0, sal.symtab, sal.line, 0, 0);
+ if (sals_end.nelts == 0)
+ return;
+ if (sals_end.nelts > 1)
+ {
+ ambiguous_line_spec (&sals_end);
+ xfree (sals_end.sals);
+ return;
+ }
+ sal_end = sals_end.sals[0];
+ xfree (sals_end.sals);
+ }
+ }
+
+ if (*arg1)
+ error ("Junk at end of line specification.");
+
+ if (!no_end && !dummy_beg && !dummy_end
+ && sal.symtab != sal_end.symtab)
+ error ("Specified start and end are in different files.");
+ if (dummy_beg && dummy_end)
+ error ("Two empty args do not say what lines to list.");
+
+ /* if line was specified by address,
+ first print exactly which line, and which file.
+ In this case, sal.symtab == 0 means address is outside
+ of all known source files, not that user failed to give a filename. */
+ if (*arg == '*')
+ {
+ if (sal.symtab == 0)
+ /* FIXME-32x64--assumes sal.pc fits in long. */
+ error ("No source file for address %s.",
+ local_hex_string ((unsigned long) sal.pc));
+ sym = find_pc_function (sal.pc);
+ if (sym)
+ {
+ print_address_numeric (sal.pc, 1, gdb_stdout);
+ printf_filtered (" is in ");
+ fputs_filtered (SYMBOL_PRINT_NAME (sym), gdb_stdout);
+ printf_filtered (" (%s:%d).\n", sal.symtab->filename, sal.line);
+ }
+ else
+ {
+ print_address_numeric (sal.pc, 1, gdb_stdout);
+ printf_filtered (" is at %s:%d.\n",
+ sal.symtab->filename, sal.line);
+ }
+ }
+
+ /* If line was not specified by just a line number,
+ and it does not imply a symtab, it must be an undebuggable symbol
+ which means no source code. */
+
+ if (!linenum_beg && sal.symtab == 0)
+ error ("No line number known for %s.", arg);
+
+ /* If this command is repeated with RET,
+ turn it into the no-arg variant. */
+
+ if (from_tty)
+ *arg = 0;
+
+ if (dummy_beg && sal_end.symtab == 0)
+ error ("No default source file yet. Do \"help list\".");
+ if (dummy_beg)
+ print_source_lines (sal_end.symtab,
+ max (sal_end.line - (get_lines_to_list () - 1), 1),
+ sal_end.line + 1, 0);
+ else if (sal.symtab == 0)
+ error ("No default source file yet. Do \"help list\".");
+ else if (no_end)
+ {
+ int first_line = sal.line - get_lines_to_list () / 2;
+
+ if (first_line < 1) first_line = 1;
+
+ print_source_lines (sal.symtab,
+ first_line,
+ first_line + get_lines_to_list (),
+ 0);
+ }
+ else
+ print_source_lines (sal.symtab, sal.line,
+ (dummy_end
+ ? sal.line + get_lines_to_list ()
+ : sal_end.line + 1),
+ 0);
+}
+
+/* Dump a specified section of assembly code. With no command line
+ arguments, this command will dump the assembly code for the
+ function surrounding the pc value in the selected frame. With one
+ argument, it will dump the assembly code surrounding that pc value.
+ Two arguments are interpeted as bounds within which to dump
+ assembly. */
+
+static void
+disassemble_command (char *arg, int from_tty)
+{
+ CORE_ADDR low, high;
+ char *name;
+ CORE_ADDR pc, pc_masked;
+ char *space_index;
+#if 0
+ asection *section;
+#endif
+
+ name = NULL;
+ if (!arg)
+ {
+ if (!deprecated_selected_frame)
+ error ("No frame selected.\n");
+
+ pc = get_frame_pc (deprecated_selected_frame);
+ if (find_pc_partial_function (pc, &name, &low, &high) == 0)
+ error ("No function contains program counter for selected frame.\n");
+#if defined(TUI)
+ /* NOTE: cagney/2003-02-13 The `tui_active' was previously
+ `tui_version'. */
+ if (tui_active)
+ /* FIXME: cagney/2004-02-07: This should be an observer. */
+ low = tui_get_low_disassembly_address (low, pc);
+#endif
+ low += FUNCTION_START_OFFSET;
+ }
+ else if (!(space_index = (char *) strchr (arg, ' ')))
+ {
+ /* One argument. */
+ pc = parse_and_eval_address (arg);
+ if (find_pc_partial_function (pc, &name, &low, &high) == 0)
+ error ("No function contains specified address.\n");
+#if defined(TUI)
+ /* NOTE: cagney/2003-02-13 The `tui_active' was previously
+ `tui_version'. */
+ if (tui_active)
+ /* FIXME: cagney/2004-02-07: This should be an observer. */
+ low = tui_get_low_disassembly_address (low, pc);
+#endif
+ low += FUNCTION_START_OFFSET;
+ }
+ else
+ {
+ /* Two arguments. */
+ *space_index = '\0';
+ low = parse_and_eval_address (arg);
+ high = parse_and_eval_address (space_index + 1);
+ }
+
+#if defined(TUI)
+ if (!tui_is_window_visible (DISASSEM_WIN))
+#endif
+ {
+ printf_filtered ("Dump of assembler code ");
+ if (name != NULL)
+ {
+ printf_filtered ("for function %s:\n", name);
+ }
+ else
+ {
+ printf_filtered ("from ");
+ print_address_numeric (low, 1, gdb_stdout);
+ printf_filtered (" to ");
+ print_address_numeric (high, 1, gdb_stdout);
+ printf_filtered (":\n");
+ }
+
+ /* Dump the specified range. */
+ gdb_disassembly (uiout, 0, 0, 0, -1, low, high);
+
+ printf_filtered ("End of assembler dump.\n");
+ gdb_flush (gdb_stdout);
+ }
+#if defined(TUI)
+ else
+ {
+ tui_show_assembly (low);
+ }
+#endif
+}
+
static void
make_command (char *arg, int from_tty)
{
shell_escape (p, from_tty);
}
-/* ARGSUSED */
static void
show_user (char *args, int from_tty)
{
xfree (pattern_fastmap);
}
\f
+/* Print a list of files and line numbers which a user may choose from
+ in order to list a function which was specified ambiguously (as with
+ `list classname::overloadedfuncname', for example). The vector in
+ SALS provides the filenames and line numbers. */
+
+static void
+ambiguous_line_spec (struct symtabs_and_lines *sals)
+{
+ int i;
+
+ for (i = 0; i < sals->nelts; ++i)
+ printf_filtered ("file: \"%s\", line number: %d\n",
+ sals->sals[i].symtab->filename, sals->sals[i].line);
+}
+
static void
set_debug (char *arg, int from_tty)
{
With no arguments, run an inferior shell.");
set_cmd_completer (c, filename_completer);
+ c = add_com ("edit", class_files, edit_command,
+ concat ("Edit specified file or function.\n\
+With no argument, edits file containing most recent line listed.\n\
+", "\
+Editing targets can be specified in these ways:\n\
+ FILE:LINENUM, to edit at that line in that file,\n\
+ FUNCTION, to edit at the beginning of that function,\n\
+ FILE:FUNCTION, to distinguish among like-named static functions.\n\
+ *ADDRESS, to edit at the line containing that address.\n\
+Uses EDITOR environment variable contents as editor (or ex as default).",NULL));
+
+ c->completer = location_completer;
+
+ add_com ("list", class_files, list_command,
+ concat ("List specified function or line.\n\
+With no argument, lists ten more lines after or around previous listing.\n\
+\"list -\" lists the ten lines before a previous ten-line listing.\n\
+One argument specifies a line, and ten lines are listed around that line.\n\
+Two arguments with comma between specify starting and ending lines to list.\n\
+", "\
+Lines can be specified in these ways:\n\
+ LINENUM, to list around that line in current file,\n\
+ FILE:LINENUM, to list around that line in that file,\n\
+ FUNCTION, to list around beginning of that function,\n\
+ FILE:FUNCTION, to distinguish among like-named static functions.\n\
+ *ADDRESS, to list around the line containing that address.\n\
+With two args if one is empty it stands for ten lines away from the other arg.", NULL));
+
+ if (!xdb_commands)
+ add_com_alias ("l", "list", class_files, 1);
+ else
+ add_com_alias ("v", "list", class_files, 1);
+
+ if (dbx_commands)
+ add_com_alias ("file", "list", class_files, 1);
+
+ c = add_com ("disassemble", class_vars, disassemble_command,
+ "Disassemble a specified section of memory.\n\
+Default is the function surrounding the pc of the selected frame.\n\
+With a single argument, the function surrounding that address is dumped.\n\
+Two arguments are taken as a range of memory to dump.");
+ set_cmd_completer (c, location_completer);
+ if (xdb_commands)
+ add_com_alias ("va", "disassemble", class_xdb, 0);
+
/* NOTE: cagney/2000-03-20: Being able to enter ``(gdb) !ls'' would
be a really useful feature. Unfortunately, the below wont do
this. Instead it adds support for the form ``(gdb) ! ls''
projects / deliverable / binutils-gdb.git / blobdiff