gdb/mi/mi-cmds.c

   1 /* MI Command Set for GDB, the GNU debugger.
   2    Copyright (C) 2000-2013 Free Software Foundation, Inc.
   3
   4    Contributed by Cygnus Solutions (a Red Hat company).
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #include "defs.h"
  22 #include "top.h"
  23 #include "mi-cmds.h"
  24 #include "gdb_string.h"
  25 #include "mi-main.h"
  26
  27 extern void _initialize_mi_cmds (void);
  28
  29 struct mi_cmd;
  30 static struct mi_cmd **lookup_table (const char *command);
  31 static void build_table (struct mi_cmd *commands);
  32
  33 static struct mi_cmd mi_cmds[] =
  34 {
  35 /* Define a MI command of NAME, and its corresponding CLI command is
  36    CLI_NAME.  */
  37 #define DEF_MI_CMD_CLI_1(NAME, CLI_NAME, ARGS_P, CALLED)        \
  38   { NAME, { CLI_NAME, ARGS_P}, NULL, CALLED }
  39 #define DEF_MI_CMD_CLI(NAME, CLI_NAME, ARGS_P) \
  40   DEF_MI_CMD_CLI_1(NAME, CLI_NAME, ARGS_P, NULL)
  41
  42 /* Define a MI command of NAME, and implemented by function MI_FUNC.  */
  43 #define DEF_MI_CMD_MI_1(NAME, MI_FUNC, CALLED) \
  44   { NAME, {NULL, 0}, MI_FUNC, CALLED }
  45 #define DEF_MI_CMD_MI(NAME, MI_FUNC) DEF_MI_CMD_MI_1(NAME, MI_FUNC, NULL)
  46
  47   DEF_MI_CMD_MI ("ada-task-info", mi_cmd_ada_task_info),
  48   DEF_MI_CMD_MI ("add-inferior", mi_cmd_add_inferior),
  49   DEF_MI_CMD_CLI_1 ("break-after", "ignore", 1,
  50                     &mi_suppress_notification.breakpoint),
  51   DEF_MI_CMD_CLI_1 ("break-condition","cond", 1,
  52                   &mi_suppress_notification.breakpoint),
  53   DEF_MI_CMD_MI_1 ("break-commands", mi_cmd_break_commands,
  54                    &mi_suppress_notification.breakpoint),
  55   DEF_MI_CMD_CLI_1 ("break-delete", "delete breakpoint", 1,
  56                     &mi_suppress_notification.breakpoint),
  57   DEF_MI_CMD_CLI_1 ("break-disable", "disable breakpoint", 1,
  58                     &mi_suppress_notification.breakpoint),
  59   DEF_MI_CMD_CLI_1 ("break-enable", "enable breakpoint", 1,
  60                      &mi_suppress_notification.breakpoint),
  61   DEF_MI_CMD_CLI ("break-info", "info break", 1),
  62   DEF_MI_CMD_MI_1 ("break-insert", mi_cmd_break_insert,
  63                    &mi_suppress_notification.breakpoint),
  64   DEF_MI_CMD_CLI ("break-list", "info break", 0),
  65   DEF_MI_CMD_MI_1 ("break-passcount", mi_cmd_break_passcount,
  66                    &mi_suppress_notification.breakpoint),
  67   DEF_MI_CMD_MI_1 ("break-watch", mi_cmd_break_watch,
  68                    &mi_suppress_notification.breakpoint),
  69   DEF_MI_CMD_MI_1 ("catch-load", mi_cmd_catch_load,
  70                    &mi_suppress_notification.breakpoint),
  71   DEF_MI_CMD_MI_1 ("catch-unload", mi_cmd_catch_unload,
  72                    &mi_suppress_notification.breakpoint),
  73   DEF_MI_CMD_MI ("data-disassemble", mi_cmd_disassemble),
  74   DEF_MI_CMD_MI ("data-evaluate-expression", mi_cmd_data_evaluate_expression),
  75   DEF_MI_CMD_MI ("data-list-changed-registers",
  76                  mi_cmd_data_list_changed_registers),
  77   DEF_MI_CMD_MI ("data-list-register-names", mi_cmd_data_list_register_names),
  78   DEF_MI_CMD_MI ("data-list-register-values", mi_cmd_data_list_register_values),
  79   DEF_MI_CMD_MI ("data-read-memory", mi_cmd_data_read_memory),
  80   DEF_MI_CMD_MI ("data-read-memory-bytes", mi_cmd_data_read_memory_bytes),
  81   DEF_MI_CMD_MI_1 ("data-write-memory", mi_cmd_data_write_memory,
  82                    &mi_suppress_notification.memory),
  83   DEF_MI_CMD_MI_1 ("data-write-memory-bytes", mi_cmd_data_write_memory_bytes,
  84                    &mi_suppress_notification.memory),
  85   DEF_MI_CMD_MI ("data-write-register-values",
  86                  mi_cmd_data_write_register_values),
  87   DEF_MI_CMD_MI ("enable-timings", mi_cmd_enable_timings),
  88   DEF_MI_CMD_MI ("enable-pretty-printing", mi_cmd_enable_pretty_printing),
  89   DEF_MI_CMD_MI ("environment-cd", mi_cmd_env_cd),
  90   DEF_MI_CMD_MI ("environment-directory", mi_cmd_env_dir),
  91   DEF_MI_CMD_MI ("environment-path", mi_cmd_env_path),
  92   DEF_MI_CMD_MI ("environment-pwd", mi_cmd_env_pwd),
  93   DEF_MI_CMD_CLI ("exec-arguments", "set args", 1),
  94   DEF_MI_CMD_MI ("exec-continue", mi_cmd_exec_continue),
  95   DEF_MI_CMD_MI ("exec-finish", mi_cmd_exec_finish),
  96   DEF_MI_CMD_MI ("exec-jump", mi_cmd_exec_jump),
  97   DEF_MI_CMD_MI ("exec-interrupt", mi_cmd_exec_interrupt),
  98   DEF_MI_CMD_MI ("exec-next", mi_cmd_exec_next),
  99   DEF_MI_CMD_MI ("exec-next-instruction", mi_cmd_exec_next_instruction),
 100   DEF_MI_CMD_MI ("exec-return", mi_cmd_exec_return),
 101   DEF_MI_CMD_MI ("exec-run", mi_cmd_exec_run),
 102   DEF_MI_CMD_MI ("exec-step", mi_cmd_exec_step),
 103   DEF_MI_CMD_MI ("exec-step-instruction", mi_cmd_exec_step_instruction),
 104   DEF_MI_CMD_CLI ("exec-until", "until", 1),
 105   DEF_MI_CMD_CLI ("file-exec-and-symbols", "file", 1),
 106   DEF_MI_CMD_CLI ("file-exec-file", "exec-file", 1),
 107   DEF_MI_CMD_MI ("file-list-exec-source-file",
 108                  mi_cmd_file_list_exec_source_file),
 109   DEF_MI_CMD_MI ("file-list-exec-source-files",
 110                  mi_cmd_file_list_exec_source_files),
 111   DEF_MI_CMD_CLI ("file-symbol-file", "symbol-file", 1),
 112   DEF_MI_CMD_MI ("gdb-exit", mi_cmd_gdb_exit),
 113   DEF_MI_CMD_CLI_1 ("gdb-set", "set", 1,
 114                     &mi_suppress_notification.cmd_param_changed),
 115   DEF_MI_CMD_CLI ("gdb-show", "show", 1),
 116   DEF_MI_CMD_CLI ("gdb-version", "show version", 0),
 117   DEF_MI_CMD_MI ("inferior-tty-set", mi_cmd_inferior_tty_set),
 118   DEF_MI_CMD_MI ("inferior-tty-show", mi_cmd_inferior_tty_show),
 119   DEF_MI_CMD_MI ("info-os", mi_cmd_info_os),
 120   DEF_MI_CMD_MI ("interpreter-exec", mi_cmd_interpreter_exec),
 121   DEF_MI_CMD_MI ("list-features", mi_cmd_list_features),
 122   DEF_MI_CMD_MI ("list-target-features", mi_cmd_list_target_features),
 123   DEF_MI_CMD_MI ("list-thread-groups", mi_cmd_list_thread_groups),
 124   DEF_MI_CMD_MI ("remove-inferior", mi_cmd_remove_inferior),
 125   DEF_MI_CMD_MI ("stack-info-depth", mi_cmd_stack_info_depth),
 126   DEF_MI_CMD_MI ("stack-info-frame", mi_cmd_stack_info_frame),
 127   DEF_MI_CMD_MI ("stack-list-arguments", mi_cmd_stack_list_args),
 128   DEF_MI_CMD_MI ("stack-list-frames", mi_cmd_stack_list_frames),
 129   DEF_MI_CMD_MI ("stack-list-locals", mi_cmd_stack_list_locals),
 130   DEF_MI_CMD_MI ("stack-list-variables", mi_cmd_stack_list_variables),
 131   DEF_MI_CMD_MI ("stack-select-frame", mi_cmd_stack_select_frame),
 132   DEF_MI_CMD_MI ("symbol-list-lines", mi_cmd_symbol_list_lines),
 133   DEF_MI_CMD_CLI ("target-attach", "attach", 1),
 134   DEF_MI_CMD_MI ("target-detach", mi_cmd_target_detach),
 135   DEF_MI_CMD_CLI ("target-disconnect", "disconnect", 0),
 136   DEF_MI_CMD_CLI ("target-download", "load", 1),
 137   DEF_MI_CMD_MI ("target-file-delete", mi_cmd_target_file_delete),
 138   DEF_MI_CMD_MI ("target-file-get", mi_cmd_target_file_get),
 139   DEF_MI_CMD_MI ("target-file-put", mi_cmd_target_file_put),
 140   DEF_MI_CMD_CLI ("target-select", "target", 1),
 141   DEF_MI_CMD_MI ("thread-info", mi_cmd_thread_info),
 142   DEF_MI_CMD_MI ("thread-list-ids", mi_cmd_thread_list_ids),
 143   DEF_MI_CMD_MI ("thread-select", mi_cmd_thread_select),
 144   DEF_MI_CMD_MI ("trace-define-variable", mi_cmd_trace_define_variable),
 145   DEF_MI_CMD_MI_1 ("trace-find", mi_cmd_trace_find,
 146                    &mi_suppress_notification.traceframe),
 147   DEF_MI_CMD_MI ("trace-list-variables", mi_cmd_trace_list_variables),
 148   DEF_MI_CMD_MI ("trace-save", mi_cmd_trace_save),
 149   DEF_MI_CMD_MI ("trace-start", mi_cmd_trace_start),
 150   DEF_MI_CMD_MI ("trace-status", mi_cmd_trace_status),
 151   DEF_MI_CMD_MI ("trace-stop", mi_cmd_trace_stop),
 152   DEF_MI_CMD_MI ("var-assign", mi_cmd_var_assign),
 153   DEF_MI_CMD_MI ("var-create", mi_cmd_var_create),
 154   DEF_MI_CMD_MI ("var-delete", mi_cmd_var_delete),
 155   DEF_MI_CMD_MI ("var-evaluate-expression", mi_cmd_var_evaluate_expression),
 156   DEF_MI_CMD_MI ("var-info-path-expression", mi_cmd_var_info_path_expression),
 157   DEF_MI_CMD_MI ("var-info-expression", mi_cmd_var_info_expression),
 158   DEF_MI_CMD_MI ("var-info-num-children", mi_cmd_var_info_num_children),
 159   DEF_MI_CMD_MI ("var-info-type", mi_cmd_var_info_type),
 160   DEF_MI_CMD_MI ("var-list-children", mi_cmd_var_list_children),
 161   DEF_MI_CMD_MI ("var-set-format", mi_cmd_var_set_format),
 162   DEF_MI_CMD_MI ("var-set-frozen", mi_cmd_var_set_frozen),
 163   DEF_MI_CMD_MI ("var-set-update-range", mi_cmd_var_set_update_range),
 164   DEF_MI_CMD_MI ("var-set-visualizer", mi_cmd_var_set_visualizer),
 165   DEF_MI_CMD_MI ("var-show-attributes", mi_cmd_var_show_attributes),
 166   DEF_MI_CMD_MI ("var-show-format", mi_cmd_var_show_format),
 167   DEF_MI_CMD_MI ("var-update", mi_cmd_var_update),
 168   { NULL, }
 169 };
 170
 171 /* Pointer to the mi command table (built at run time). */
 172
 173 static struct mi_cmd **mi_table;
 174
 175 /* A prime large enough to accomodate the entire command table.  */
 176 enum
 177   {
 178     MI_TABLE_SIZE = 227
 179   };
 180
 181 /* Exported function used to obtain info from the table.  */
 182 struct mi_cmd *
 183 mi_lookup (const char *command)
 184 {
 185   return *lookup_table (command);
 186 }
 187
 188 /* Used for collecting hash hit/miss statistics.  */
 189
 190 struct mi_cmd_stats
 191 {
 192   int hit;
 193   int miss;
 194   int rehash;
 195 };
 196 struct mi_cmd_stats stats;
 197
 198 /* Look up a command.  */
 199
 200 static struct mi_cmd **
 201 lookup_table (const char *command)
 202 {
 203   const char *chp;
 204   unsigned int index = 0;
 205
 206   /* Compute our hash.  */
 207   for (chp = command; *chp; chp++)
 208     {
 209       /* We use a somewhat arbitrary formula.  */
 210       index = ((index << 6) + (unsigned int) *chp) % MI_TABLE_SIZE;
 211     }
 212
 213   while (1)
 214     {
 215       struct mi_cmd **entry = &mi_table[index];
 216       if ((*entry) == 0)
 217         {
 218           /* not found, return pointer to next free. */
 219           stats.miss++;
 220           return entry;
 221         }
 222       if (strcmp (command, (*entry)->name) == 0)
 223         {
 224           stats.hit++;
 225           return entry;         /* found */
 226         }
 227       index = (index + 1) % MI_TABLE_SIZE;
 228       stats.rehash++;
 229     }
 230 }
 231
 232 static void
 233 build_table (struct mi_cmd *commands)
 234 {
 235   int nr_rehash = 0;
 236   int nr_entries = 0;
 237   struct mi_cmd *command;
 238   int sizeof_table = sizeof (struct mi_cmd **) * MI_TABLE_SIZE;
 239
 240   mi_table = xmalloc (sizeof_table);
 241   memset (mi_table, 0, sizeof_table);
 242   for (command = commands; command->name != 0; command++)
 243     {
 244       struct mi_cmd **entry = lookup_table (command->name);
 245
 246       if (*entry)
 247         internal_error (__FILE__, __LINE__,
 248                         _("command `%s' appears to be duplicated"),
 249                         command->name);
 250       *entry = command;
 251       /* FIXME lose these prints */
 252       if (0)
 253         {
 254           fprintf_unfiltered (gdb_stdlog, "%-30s %2d\n",
 255                               command->name, stats.rehash - nr_rehash);
 256         }
 257       nr_entries++;
 258       nr_rehash = stats.rehash;
 259     }
 260   if (0)
 261     {
 262       fprintf_filtered (gdb_stdlog, "Average %3.1f\n",
 263                         (double) nr_rehash / (double) nr_entries);
 264     }
 265 }
 266
 267 void
 268 _initialize_mi_cmds (void)
 269 {
 270   build_table (mi_cmds);
 271   memset (&stats, 0, sizeof (stats));
 272 }