old-cross-binutils/gdb/mi/mi-cmd-break.c
Joel Brobecker 0b30217134 Copyright year update in most files of the GDB Project.
gdb/ChangeLog:

        Copyright year update in most files of the GDB Project.
2012-01-04 08:17:56 +00:00

327 lines
7.8 KiB
C

/* MI Command Set - breakpoint and watchpoint commands.
Copyright (C) 2000-2002, 2007-2012 Free Software Foundation, Inc.
Contributed by Cygnus Solutions (a Red Hat company).
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 3 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, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "arch-utils.h"
#include "mi-cmds.h"
#include "ui-out.h"
#include "mi-out.h"
#include "breakpoint.h"
#include "gdb_string.h"
#include "mi-getopt.h"
#include "gdb.h"
#include "exceptions.h"
#include "observer.h"
#include "mi-main.h"
enum
{
FROM_TTY = 0
};
/* True if MI breakpoint observers have been registered. */
static int mi_breakpoint_observers_installed;
/* Control whether breakpoint_notify may act. */
static int mi_can_breakpoint_notify;
/* Output a single breakpoint, when allowed. */
static void
breakpoint_notify (struct breakpoint *b)
{
if (mi_can_breakpoint_notify)
gdb_breakpoint_query (current_uiout, b->number, NULL);
}
enum bp_type
{
REG_BP,
HW_BP,
REGEXP_BP
};
/* Implements the -break-insert command.
See the MI manual for the list of possible options. */
void
mi_cmd_break_insert (char *command, char **argv, int argc)
{
char *address = NULL;
int hardware = 0;
int temp_p = 0;
int thread = -1;
int ignore_count = 0;
char *condition = NULL;
int pending = 0;
int enabled = 1;
int tracepoint = 0;
struct cleanup *back_to;
enum bptype type_wanted;
enum opt
{
HARDWARE_OPT, TEMP_OPT, CONDITION_OPT,
IGNORE_COUNT_OPT, THREAD_OPT, PENDING_OPT, DISABLE_OPT,
TRACEPOINT_OPT,
};
static const struct mi_opt opts[] =
{
{"h", HARDWARE_OPT, 0},
{"t", TEMP_OPT, 0},
{"c", CONDITION_OPT, 1},
{"i", IGNORE_COUNT_OPT, 1},
{"p", THREAD_OPT, 1},
{"f", PENDING_OPT, 0},
{"d", DISABLE_OPT, 0},
{"a", TRACEPOINT_OPT, 0},
{ 0, 0, 0 }
};
/* Parse arguments. It could be -r or -h or -t, <location> or ``--''
to denote the end of the option list. */
int oind = 0;
char *oarg;
while (1)
{
int opt = mi_getopt ("-break-insert", argc, argv,
opts, &oind, &oarg);
if (opt < 0)
break;
switch ((enum opt) opt)
{
case TEMP_OPT:
temp_p = 1;
break;
case HARDWARE_OPT:
hardware = 1;
break;
case CONDITION_OPT:
condition = oarg;
break;
case IGNORE_COUNT_OPT:
ignore_count = atol (oarg);
break;
case THREAD_OPT:
thread = atol (oarg);
break;
case PENDING_OPT:
pending = 1;
break;
case DISABLE_OPT:
enabled = 0;
break;
case TRACEPOINT_OPT:
tracepoint = 1;
break;
}
}
if (oind >= argc)
error (_("-break-insert: Missing <location>"));
if (oind < argc - 1)
error (_("-break-insert: Garbage following <location>"));
address = argv[oind];
/* Now we have what we need, let's insert the breakpoint! */
if (! mi_breakpoint_observers_installed)
{
observer_attach_breakpoint_created (breakpoint_notify);
mi_breakpoint_observers_installed = 1;
}
back_to = make_cleanup_restore_integer (&mi_can_breakpoint_notify);
mi_can_breakpoint_notify = 1;
/* Note that to request a fast tracepoint, the client uses the
"hardware" flag, although there's nothing of hardware related to
fast tracepoints -- one can implement slow tracepoints with
hardware breakpoints, but fast tracepoints are always software.
"fast" is a misnomer, actually, "jump" would be more appropriate.
A simulator or an emulator could conceivably implement fast
regular non-jump based tracepoints. */
type_wanted = (tracepoint
? (hardware ? bp_fast_tracepoint : bp_tracepoint)
: (hardware ? bp_hardware_breakpoint : bp_breakpoint));
create_breakpoint (get_current_arch (), address, condition, thread,
0 /* condition and thread are valid. */,
temp_p, type_wanted,
ignore_count,
pending ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE,
&bkpt_breakpoint_ops, 0, enabled, 0);
do_cleanups (back_to);
}
enum wp_type
{
REG_WP,
READ_WP,
ACCESS_WP
};
void
mi_cmd_break_passcount (char *command, char **argv, int argc)
{
int n;
int p;
struct tracepoint *t;
if (argc != 2)
error (_("Usage: tracepoint-number passcount"));
n = atoi (argv[0]);
p = atoi (argv[1]);
t = get_tracepoint (n);
if (t)
{
t->pass_count = p;
observer_notify_tracepoint_modified (n);
}
else
{
error (_("Could not find tracepoint %d"), n);
}
}
/* Insert a watchpoint. The type of watchpoint is specified by the
first argument:
-break-watch <expr> --> insert a regular wp.
-break-watch -r <expr> --> insert a read watchpoint.
-break-watch -a <expr> --> insert an access wp. */
void
mi_cmd_break_watch (char *command, char **argv, int argc)
{
char *expr = NULL;
enum wp_type type = REG_WP;
enum opt
{
READ_OPT, ACCESS_OPT
};
static const struct mi_opt opts[] =
{
{"r", READ_OPT, 0},
{"a", ACCESS_OPT, 0},
{ 0, 0, 0 }
};
/* Parse arguments. */
int oind = 0;
char *oarg;
while (1)
{
int opt = mi_getopt ("-break-watch", argc, argv,
opts, &oind, &oarg);
if (opt < 0)
break;
switch ((enum opt) opt)
{
case READ_OPT:
type = READ_WP;
break;
case ACCESS_OPT:
type = ACCESS_WP;
break;
}
}
if (oind >= argc)
error (_("-break-watch: Missing <expression>"));
if (oind < argc - 1)
error (_("-break-watch: Garbage following <expression>"));
expr = argv[oind];
/* Now we have what we need, let's insert the watchpoint! */
switch (type)
{
case REG_WP:
watch_command_wrapper (expr, FROM_TTY, 0);
break;
case READ_WP:
rwatch_command_wrapper (expr, FROM_TTY, 0);
break;
case ACCESS_WP:
awatch_command_wrapper (expr, FROM_TTY, 0);
break;
default:
error (_("-break-watch: Unknown watchpoint type."));
}
}
/* The mi_read_next_line consults these variable to return successive
command lines. While it would be clearer to use a closure pointer,
it is not expected that any future code will use read_command_lines_1,
therefore no point of overengineering. */
static char **mi_command_line_array;
static int mi_command_line_array_cnt;
static int mi_command_line_array_ptr;
static char *
mi_read_next_line (void)
{
if (mi_command_line_array_ptr == mi_command_line_array_cnt)
return NULL;
else
return mi_command_line_array[mi_command_line_array_ptr++];
}
void
mi_cmd_break_commands (char *command, char **argv, int argc)
{
struct command_line *break_command;
char *endptr;
int bnum;
struct breakpoint *b;
if (argc < 1)
error (_("USAGE: %s <BKPT> [<COMMAND> [<COMMAND>...]]"), command);
bnum = strtol (argv[0], &endptr, 0);
if (endptr == argv[0])
error (_("breakpoint number argument \"%s\" is not a number."),
argv[0]);
else if (*endptr != '\0')
error (_("junk at the end of breakpoint number argument \"%s\"."),
argv[0]);
b = get_breakpoint (bnum);
if (b == NULL)
error (_("breakpoint %d not found."), bnum);
mi_command_line_array = argv;
mi_command_line_array_ptr = 1;
mi_command_line_array_cnt = argc;
if (is_tracepoint (b))
break_command = read_command_lines_1 (mi_read_next_line, 1,
check_tracepoint_command, b);
else
break_command = read_command_lines_1 (mi_read_next_line, 1, 0, 0);
breakpoint_set_commands (b, break_command);
}