old-cross-binutils/gdb/mi/mi-cmd-info.c

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/* MI Command Set - information commands.
Copyright (C) 2011-2016 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 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 "osdata.h"
#include "mi-cmds.h"
#include "ada-lang.h"
#include "arch-utils.h"
/* Implement the "-info-ada-exceptions" GDB/MI command. */
void
mi_cmd_info_ada_exceptions (char *command, char **argv, int argc)
{
struct ui_out *uiout = current_uiout;
struct gdbarch *gdbarch = get_current_arch ();
char *regexp;
struct cleanup *old_chain;
VEC(ada_exc_info) *exceptions;
int ix;
struct ada_exc_info *info;
switch (argc)
{
case 0:
regexp = NULL;
break;
case 1:
regexp = argv[0];
break;
default:
error (_("Usage: -info-ada-exceptions [REGEXP]"));
break;
}
exceptions = ada_exceptions_list (regexp);
old_chain = make_cleanup (VEC_cleanup (ada_exc_info), &exceptions);
make_cleanup_ui_out_table_begin_end
(uiout, 2, VEC_length (ada_exc_info, exceptions), "ada-exceptions");
ui_out_table_header (uiout, 1, ui_left, "name", "Name");
ui_out_table_header (uiout, 1, ui_left, "address", "Address");
ui_out_table_body (uiout);
for (ix = 0; VEC_iterate(ada_exc_info, exceptions, ix, info); ix++)
{
struct cleanup *sub_chain;
sub_chain = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
ui_out_field_string (uiout, "name", info->name);
ui_out_field_core_addr (uiout, "address", gdbarch, info->addr);
do_cleanups (sub_chain);
}
do_cleanups (old_chain);
}
New GDB/MI command "-info-gdb-mi-command" This patch adds a new GDB/MI command meant for graphical frontends trying to determine whether a given GDB/MI command exists or not. Examples: -info-gdb-mi-command unsupported-command ^done,command={exists="false"} (gdb) -info-gdb-mi-command symbol-list-lines ^done,command={exists="true"} (gdb) At the moment, this is the only piece of information that this command returns. Eventually, and if needed, we can extend it to provide command-specific pieces of information, such as updates to the command's syntax since inception. This could become, for instance: -info-gdb-mi-command symbol-list-lines ^done,command={exists="true",features=[]} (gdb) -info-gdb-mi-command catch-assert ^done,command={exists="true",features=["conditions"]} In the first case, it would mean that no extra features, while in the second, it announces that the -catch-assert command in this version of the debugger supports a feature called "condition" - exact semantics to be documented with combined with the rest of the queried command's documentation. But for now, we start small, and only worry about existance. And to bootstrap the process, I have added an entry in the output of the -list-features command as well ("info-gdb-mi-command"), allowing the graphical frontends to go through the following process: 1. Send -list-features, collect info from there as before; 2. Check if the output contains "info-gdb-mi-command". If it does, then support for various commands can be queried though -info-gdb-mi-command. Newer commands will be expected to always be checked via this new -info-gdb-mi-command. gdb/ChangeLog: * mi/mi-cmds.h (mi_cmd_info_gdb_mi_command): Declare. * mi/mi-cmd-info.c (mi_cmd_info_gdb_mi_command): New function. * mi/mi-cmds.c (mi_cmds): Add -info-gdb-mi-command command. * mi/mi-main.c (mi_cmd_list_features): Add "info-gdb-mi-command" field to output of "-list-features". * NEWS: Add entry for new -info-gdb-mi-command. gdb/doc/ChangeLog: * gdb.texinfo (GDB/MI Miscellaneous Commands): Document the new -info-gdb-mi-command GDB/MI command. Document the meaning of "-info-gdb-mi-command" in the output of -list-features. gdb/testsuite/ChangeLog: * gdb.mi/mi-i-cmd.exp: New file.
2013-11-12 10:51:30 +00:00
/* Implement the "-info-gdb-mi-command" GDB/MI command. */
void
mi_cmd_info_gdb_mi_command (char *command, char **argv, int argc)
{
const char *cmd_name;
struct mi_cmd *cmd;
struct ui_out *uiout = current_uiout;
struct cleanup *old_chain;
/* This command takes exactly one argument. */
if (argc != 1)
error (_("Usage: -info-gdb-mi-command MI_COMMAND_NAME"));
cmd_name = argv[0];
/* Normally, the command name (aka the "operation" in the GDB/MI
grammar), does not include the leading '-' (dash). But for
the user's convenience, allow the user to specify the command
name to be with or without that leading dash. */
if (cmd_name[0] == '-')
cmd_name++;
cmd = mi_lookup (cmd_name);
old_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "command");
ui_out_field_string (uiout, "exists", cmd != NULL ? "true" : "false");
do_cleanups (old_chain);
}
void
mi_cmd_info_os (char *command, char **argv, int argc)
{
switch (argc)
{
case 0:
info_osdata_command ("", 0);
break;
case 1:
info_osdata_command (argv[0], 0);
break;
default:
error (_("Usage: -info-os [INFOTYPE]"));
break;
}
}