gdb/mi/mi-cmds.c

   1 /* MI Command Set for GDB, the GNU debugger.
   2    Copyright (C) 2000-2017 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 "mi-main.h"
  25
  26 extern void _initialize_mi_cmds (void);
  27
  28 struct mi_cmd;
  29 static struct mi_cmd **lookup_table (const char *command);
  30 static void build_table (struct mi_cmd *commands);
  31
  32 static struct mi_cmd mi_cmds[] =
  33 {
  34 /* Define a MI command of NAME, and its corresponding CLI command is
  35    CLI_NAME.  */
  36 #define DEF_MI_CMD_CLI_1(NAME, CLI_NAME, ARGS_P, CALLED)        \
  37   { NAME, { CLI_NAME, ARGS_P}, NULL, CALLED }
  38 #define DEF_MI_CMD_CLI(NAME, CLI_NAME, ARGS_P) \
  39   DEF_MI_CMD_CLI_1(NAME, CLI_NAME, ARGS_P, NULL)
  40
  41 /* Define a MI command of NAME, and implemented by function MI_FUNC.  */
  42 #define DEF_MI_CMD_MI_1(NAME, MI_FUNC, CALLED) \
  43   { NAME, {NULL, 0}, MI_FUNC, CALLED }
  44 #define DEF_MI_CMD_MI(NAME, MI_FUNC) DEF_MI_CMD_MI_1(NAME, MI_FUNC, NULL)
  45
  46   DEF_MI_CMD_MI ("ada-task-info", mi_cmd_ada_task_info),
  47   DEF_MI_CMD_MI ("add-inferior", mi_cmd_add_inferior),
  48   DEF_MI_CMD_CLI_1 ("break-after", "ignore", 1,
  49                     &mi_suppress_notification.breakpoint),
  50   DEF_MI_CMD_CLI_1 ("break-condition","cond", 1,
  51                   &mi_suppress_notification.breakpoint),
  52   DEF_MI_CMD_MI_1 ("break-commands", mi_cmd_break_commands,
  53                    &mi_suppress_notification.breakpoint),
  54   DEF_MI_CMD_CLI_1 ("break-delete", "delete breakpoint", 1,
  55                     &mi_suppress_notification.breakpoint),
  56   DEF_MI_CMD_CLI_1 ("break-disable", "disable breakpoint", 1,
  57                     &mi_suppress_notification.breakpoint),
  58   DEF_MI_CMD_CLI_1 ("break-enable", "enable breakpoint", 1,
  59                      &mi_suppress_notification.breakpoint),
  60   DEF_MI_CMD_CLI ("break-info", "info break", 1),
  61   DEF_MI_CMD_MI_1 ("break-insert", mi_cmd_break_insert,
  62                    &mi_suppress_notification.breakpoint),
  63   DEF_MI_CMD_MI_1 ("dprintf-insert", mi_cmd_dprintf_insert,
  64                    &mi_suppress_notification.breakpoint),
  65   DEF_MI_CMD_CLI ("break-list", "info break", 0),
  66   DEF_MI_CMD_MI_1 ("break-passcount", mi_cmd_break_passcount,
  67                    &mi_suppress_notification.breakpoint),
  68   DEF_MI_CMD_MI_1 ("break-watch", mi_cmd_break_watch,
  69                    &mi_suppress_notification.breakpoint),
  70   DEF_MI_CMD_MI_1 ("catch-assert", mi_cmd_catch_assert,
  71                    &mi_suppress_notification.breakpoint),
  72   DEF_MI_CMD_MI_1 ("catch-exception", mi_cmd_catch_exception,
  73                    &mi_suppress_notification.breakpoint),
  74   DEF_MI_CMD_MI_1 ("catch-load", mi_cmd_catch_load,
  75                    &mi_suppress_notification.breakpoint),
  76   DEF_MI_CMD_MI_1 ("catch-unload", mi_cmd_catch_unload,
  77                    &mi_suppress_notification.breakpoint),
  78   DEF_MI_CMD_MI ("data-disassemble", mi_cmd_disassemble),
  79   DEF_MI_CMD_MI ("data-evaluate-expression", mi_cmd_data_evaluate_expression),
  80   DEF_MI_CMD_MI ("data-list-changed-registers",
  81                  mi_cmd_data_list_changed_registers),
  82   DEF_MI_CMD_MI ("data-list-register-names", mi_cmd_data_list_register_names),
  83   DEF_MI_CMD_MI ("data-list-register-values", mi_cmd_data_list_register_values),
  84   DEF_MI_CMD_MI ("data-read-memory", mi_cmd_data_read_memory),
  85   DEF_MI_CMD_MI ("data-read-memory-bytes", mi_cmd_data_read_memory_bytes),
  86   DEF_MI_CMD_MI_1 ("data-write-memory", mi_cmd_data_write_memory,
  87                    &mi_suppress_notification.memory),
  88   DEF_MI_CMD_MI_1 ("data-write-memory-bytes", mi_cmd_data_write_memory_bytes,
  89                    &mi_suppress_notification.memory),
  90   DEF_MI_CMD_MI ("data-write-register-values",
  91                  mi_cmd_data_write_register_values),
  92   DEF_MI_CMD_MI ("enable-timings", mi_cmd_enable_timings),
  93   DEF_MI_CMD_MI ("enable-pretty-printing", mi_cmd_enable_pretty_printing),
  94   DEF_MI_CMD_MI ("enable-frame-filters", mi_cmd_enable_frame_filters),
  95   DEF_MI_CMD_MI ("environment-cd", mi_cmd_env_cd),
  96   DEF_MI_CMD_MI ("environment-directory", mi_cmd_env_dir),
  97   DEF_MI_CMD_MI ("environment-path", mi_cmd_env_path),
  98   DEF_MI_CMD_MI ("environment-pwd", mi_cmd_env_pwd),
  99   DEF_MI_CMD_CLI_1 ("exec-arguments", "set args", 1,
 100                     &mi_suppress_notification.cmd_param_changed),
 101   DEF_MI_CMD_MI ("exec-continue", mi_cmd_exec_continue),
 102   DEF_MI_CMD_MI ("exec-finish", mi_cmd_exec_finish),
 103   DEF_MI_CMD_MI ("exec-jump", mi_cmd_exec_jump),
 104   DEF_MI_CMD_MI ("exec-interrupt", mi_cmd_exec_interrupt),
 105   DEF_MI_CMD_MI ("exec-next", mi_cmd_exec_next),
 106   DEF_MI_CMD_MI ("exec-next-instruction", mi_cmd_exec_next_instruction),
 107   DEF_MI_CMD_MI ("exec-return", mi_cmd_exec_return),
 108   DEF_MI_CMD_MI ("exec-run", mi_cmd_exec_run),
 109   DEF_MI_CMD_MI ("exec-step", mi_cmd_exec_step),
 110   DEF_MI_CMD_MI ("exec-step-instruction", mi_cmd_exec_step_instruction),
 111   DEF_MI_CMD_CLI ("exec-until", "until", 1),
 112   DEF_MI_CMD_CLI ("file-exec-and-symbols", "file", 1),
 113   DEF_MI_CMD_CLI ("file-exec-file", "exec-file", 1),
 114   DEF_MI_CMD_MI ("file-list-exec-source-file",
 115                  mi_cmd_file_list_exec_source_file),
 116   DEF_MI_CMD_MI ("file-list-exec-source-files",
 117                  mi_cmd_file_list_exec_source_files),
 118   DEF_MI_CMD_CLI ("file-symbol-file", "symbol-file", 1),
 119   DEF_MI_CMD_MI ("gdb-exit", mi_cmd_gdb_exit),
 120   DEF_MI_CMD_CLI_1 ("gdb-set", "set", 1,
 121                     &mi_suppress_notification.cmd_param_changed),
 122   DEF_MI_CMD_CLI ("gdb-show", "show", 1),
 123   DEF_MI_CMD_CLI ("gdb-version", "show version", 0),
 124   DEF_MI_CMD_MI ("inferior-tty-set", mi_cmd_inferior_tty_set),
 125   DEF_MI_CMD_MI ("inferior-tty-show", mi_cmd_inferior_tty_show),
 126   DEF_MI_CMD_MI ("info-ada-exceptions", mi_cmd_info_ada_exceptions),
 127   DEF_MI_CMD_MI ("info-gdb-mi-command", mi_cmd_info_gdb_mi_command),
 128   DEF_MI_CMD_MI ("info-os", mi_cmd_info_os),
 129   DEF_MI_CMD_MI ("interpreter-exec", mi_cmd_interpreter_exec),
 130   DEF_MI_CMD_MI ("list-features", mi_cmd_list_features),
 131   DEF_MI_CMD_MI ("list-target-features", mi_cmd_list_target_features),
 132   DEF_MI_CMD_MI ("list-thread-groups", mi_cmd_list_thread_groups),
 133   DEF_MI_CMD_MI ("remove-inferior", mi_cmd_remove_inferior),
 134   DEF_MI_CMD_MI ("stack-info-depth", mi_cmd_stack_info_depth),
 135   DEF_MI_CMD_MI ("stack-info-frame", mi_cmd_stack_info_frame),
 136   DEF_MI_CMD_MI ("stack-list-arguments", mi_cmd_stack_list_args),
 137   DEF_MI_CMD_MI ("stack-list-frames", mi_cmd_stack_list_frames),
 138   DEF_MI_CMD_MI ("stack-list-locals", mi_cmd_stack_list_locals),
 139   DEF_MI_CMD_MI ("stack-list-variables", mi_cmd_stack_list_variables),
 140   DEF_MI_CMD_MI_1 ("stack-select-frame", mi_cmd_stack_select_frame,
 141                    &mi_suppress_notification.user_selected_context),
 142   DEF_MI_CMD_MI ("symbol-list-lines", mi_cmd_symbol_list_lines),
 143   DEF_MI_CMD_CLI ("target-attach", "attach", 1),
 144   DEF_MI_CMD_MI ("target-detach", mi_cmd_target_detach),
 145   DEF_MI_CMD_CLI ("target-disconnect", "disconnect", 0),
 146   DEF_MI_CMD_CLI ("target-download", "load", 1),
 147   DEF_MI_CMD_MI ("target-file-delete", mi_cmd_target_file_delete),
 148   DEF_MI_CMD_MI ("target-file-get", mi_cmd_target_file_get),
 149   DEF_MI_CMD_MI ("target-file-put", mi_cmd_target_file_put),
 150   DEF_MI_CMD_CLI ("target-select", "target", 1),
 151   DEF_MI_CMD_MI ("thread-info", mi_cmd_thread_info),
 152   DEF_MI_CMD_MI ("thread-list-ids", mi_cmd_thread_list_ids),
 153   DEF_MI_CMD_MI_1 ("thread-select", mi_cmd_thread_select,
 154                    &mi_suppress_notification.user_selected_context),
 155   DEF_MI_CMD_MI ("trace-define-variable", mi_cmd_trace_define_variable),
 156   DEF_MI_CMD_MI_1 ("trace-find", mi_cmd_trace_find,
 157                    &mi_suppress_notification.traceframe),
 158   DEF_MI_CMD_MI ("trace-frame-collected",
 159                  mi_cmd_trace_frame_collected),
 160   DEF_MI_CMD_MI ("trace-list-variables", mi_cmd_trace_list_variables),
 161   DEF_MI_CMD_MI ("trace-save", mi_cmd_trace_save),
 162   DEF_MI_CMD_MI ("trace-start", mi_cmd_trace_start),
 163   DEF_MI_CMD_MI ("trace-status", mi_cmd_trace_status),
 164   DEF_MI_CMD_MI ("trace-stop", mi_cmd_trace_stop),
 165   DEF_MI_CMD_MI ("var-assign", mi_cmd_var_assign),
 166   DEF_MI_CMD_MI ("var-create", mi_cmd_var_create),
 167   DEF_MI_CMD_MI ("var-delete", mi_cmd_var_delete),
 168   DEF_MI_CMD_MI ("var-evaluate-expression", mi_cmd_var_evaluate_expression),
 169   DEF_MI_CMD_MI ("var-info-path-expression", mi_cmd_var_info_path_expression),
 170   DEF_MI_CMD_MI ("var-info-expression", mi_cmd_var_info_expression),
 171   DEF_MI_CMD_MI ("var-info-num-children", mi_cmd_var_info_num_children),
 172   DEF_MI_CMD_MI ("var-info-type", mi_cmd_var_info_type),
 173   DEF_MI_CMD_MI ("var-list-children", mi_cmd_var_list_children),
 174   DEF_MI_CMD_MI ("var-set-format", mi_cmd_var_set_format),
 175   DEF_MI_CMD_MI ("var-set-frozen", mi_cmd_var_set_frozen),
 176   DEF_MI_CMD_MI ("var-set-update-range", mi_cmd_var_set_update_range),
 177   DEF_MI_CMD_MI ("var-set-visualizer", mi_cmd_var_set_visualizer),
 178   DEF_MI_CMD_MI ("var-show-attributes", mi_cmd_var_show_attributes),
 179   DEF_MI_CMD_MI ("var-show-format", mi_cmd_var_show_format),
 180   DEF_MI_CMD_MI ("var-update", mi_cmd_var_update),
 181   { NULL, }
 182 };
 183
 184 /* Pointer to the mi command table (built at run time). */
 185
 186 static struct mi_cmd **mi_table;
 187
 188 /* A prime large enough to accomodate the entire command table.  */
 189 enum
 190   {
 191     MI_TABLE_SIZE = 227
 192   };
 193
 194 /* Exported function used to obtain info from the table.  */
 195 struct mi_cmd *
 196 mi_lookup (const char *command)
 197 {
 198   return *lookup_table (command);
 199 }
 200
 201 /* Used for collecting hash hit/miss statistics.  */
 202
 203 struct mi_cmd_stats
 204 {
 205   int hit;
 206   int miss;
 207   int rehash;
 208 };
 209 struct mi_cmd_stats stats;
 210
 211 /* Look up a command.  */
 212
 213 static struct mi_cmd **
 214 lookup_table (const char *command)
 215 {
 216   const char *chp;
 217   unsigned int index = 0;
 218
 219   /* Compute our hash.  */
 220   for (chp = command; *chp; chp++)
 221     {
 222       /* We use a somewhat arbitrary formula.  */
 223       index = ((index << 6) + (unsigned int) *chp) % MI_TABLE_SIZE;
 224     }
 225
 226   while (1)
 227     {
 228       struct mi_cmd **entry = &mi_table[index];
 229       if ((*entry) == 0)
 230         {
 231           /* not found, return pointer to next free. */
 232           stats.miss++;
 233           return entry;
 234         }
 235       if (strcmp (command, (*entry)->name) == 0)
 236         {
 237           stats.hit++;
 238           return entry;         /* found */
 239         }
 240       index = (index + 1) % MI_TABLE_SIZE;
 241       stats.rehash++;
 242     }
 243 }
 244
 245 static void
 246 build_table (struct mi_cmd *commands)
 247 {
 248   int nr_rehash = 0;
 249   int nr_entries = 0;
 250   struct mi_cmd *command;
 251
 252   mi_table = XCNEWVEC (struct mi_cmd *, MI_TABLE_SIZE);
 253   for (command = commands; command->name != 0; command++)
 254     {
 255       struct mi_cmd **entry = lookup_table (command->name);
 256
 257       if (*entry)
 258         internal_error (__FILE__, __LINE__,
 259                         _("command `%s' appears to be duplicated"),
 260                         command->name);
 261       *entry = command;
 262       /* FIXME lose these prints */
 263       if (0)
 264         {
 265           fprintf_unfiltered (gdb_stdlog, "%-30s %2d\n",
 266                               command->name, stats.rehash - nr_rehash);
 267         }
 268       nr_entries++;
 269       nr_rehash = stats.rehash;
 270     }
 271   if (0)
 272     {
 273       fprintf_filtered (gdb_stdlog, "Average %3.1f\n",
 274                         (double) nr_rehash / (double) nr_entries);
 275     }
 276 }
 277
 278 void
 279 _initialize_mi_cmds (void)
 280 {
 281   build_table (mi_cmds);
 282   memset (&stats, 0, sizeof (stats));
 283 }