gdb/mi/mi-cmds.c

   1 /* MI Command Set for GDB, the GNU debugger.
   2
   3    Copyright 2000, 2001, 2003 Free Software Foundation, Inc.
   4
   5    Contributed by Cygnus Solutions (a Red Hat company).
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 59 Temple Place - Suite 330,
  22    Boston, MA 02111-1307, USA.  */
  23
  24 #include "defs.h"
  25 #include "top.h"
  26 #include "mi-cmds.h"
  27 #include "gdb_string.h"
  28
  29 extern void _initialize_mi_cmds (void);
  30 struct mi_cmd;
  31 static struct mi_cmd **lookup_table (const char *command);
  32 static void build_table (struct mi_cmd *commands);
  33
  34
  35 struct mi_cmd mi_cmds[] =
  36 {
  37   {"break-after", "ignore %s", 0},
  38   {"break-catch", 0, 0},
  39   {"break-commands", 0, 0},
  40   {"break-condition", "cond %s", 0},
  41   {"break-delete", "delete breakpoint %s", 0},
  42   {"break-disable", "disable breakpoint %s", 0},
  43   {"break-enable", "enable breakpoint %s", 0},
  44   {"break-info", "info break %s", 0},
  45   {"break-insert", 0, 0, mi_cmd_break_insert},
  46   {"break-list", "info break", 0},
  47   {"break-watch", 0, 0, mi_cmd_break_watch},
  48   {"data-disassemble", 0, 0, mi_cmd_disassemble},
  49   {"data-evaluate-expression", 0, 0, mi_cmd_data_evaluate_expression},
  50   {"data-list-changed-registers", 0, 0, mi_cmd_data_list_changed_registers},
  51   {"data-list-register-names", 0, 0, mi_cmd_data_list_register_names},
  52   {"data-list-register-values", 0, 0, mi_cmd_data_list_register_values},
  53   {"data-read-memory", 0, 0, mi_cmd_data_read_memory},
  54   {"data-write-memory", 0, 0, mi_cmd_data_write_memory},
  55   {"data-write-register-values", 0, 0, mi_cmd_data_write_register_values},
  56   {"display-delete", 0, 0},
  57   {"display-disable", 0, 0},
  58   {"display-enable", 0, 0},
  59   {"display-insert", 0, 0},
  60   {"display-list", 0, 0},
  61   {"environment-cd", 0, 0, mi_cmd_env_cd},
  62   {"environment-directory", 0, 0, mi_cmd_env_dir},
  63   {"environment-path", 0, 0, mi_cmd_env_path},
  64   {"environment-pwd", 0, 0, mi_cmd_env_pwd},
  65   {"exec-abort", 0, 0},
  66   {"exec-arguments", "set args %s", 0},
  67   {"exec-continue", 0, mi_cmd_exec_continue},
  68   {"exec-finish", 0, mi_cmd_exec_finish},
  69   {"exec-interrupt", 0, mi_cmd_exec_interrupt},
  70   {"exec-next", 0, mi_cmd_exec_next},
  71   {"exec-next-instruction", 0, mi_cmd_exec_next_instruction},
  72   {"exec-return", 0, mi_cmd_exec_return},
  73   {"exec-run", 0, mi_cmd_exec_run},
  74   {"exec-show-arguments", 0, 0},
  75   {"exec-signal", 0, 0},
  76   {"exec-step", 0, mi_cmd_exec_step},
  77   {"exec-step-instruction", 0, mi_cmd_exec_step_instruction},
  78   {"exec-until", 0, mi_cmd_exec_until},
  79   {"file-clear", 0, 0},
  80   {"file-exec-and-symbols", "file %s", 0},
  81   {"file-exec-file", "exec-file %s", 0},
  82   {"file-list-exec-sections", 0, 0},
  83   {"file-list-exec-source-file", 0, 0, mi_cmd_file_list_exec_source_file},
  84   {"file-list-exec-source-files", 0, 0},
  85   {"file-list-shared-libraries", 0, 0},
  86   {"file-list-symbol-files", 0, 0},
  87   {"file-symbol-file", "symbol-file %s", 0},
  88   {"gdb-complete", 0, 0},
  89   {"gdb-exit", 0, 0, mi_cmd_gdb_exit},
  90   {"gdb-set", "set %s", 0},
  91   {"gdb-show", "show %s", 0},
  92   {"gdb-source", 0, 0},
  93   {"gdb-version", "show version", 0},
  94   {"interpreter-exec", 0, 0, mi_cmd_interpreter_exec},
  95   {"kod-info", 0, 0},
  96   {"kod-list", 0, 0},
  97   {"kod-list-object-types", 0, 0},
  98   {"kod-show", 0, 0},
  99   {"overlay-auto", 0, 0},
 100   {"overlay-list-mapping-state", 0, 0},
 101   {"overlay-list-overlays", 0, 0},
 102   {"overlay-map", 0, 0},
 103   {"overlay-off", 0, 0},
 104   {"overlay-on", 0, 0},
 105   {"overlay-unmap", 0, 0},
 106   {"signal-handle", 0, 0},
 107   {"signal-list-handle-actions", 0, 0},
 108   {"signal-list-signal-types", 0, 0},
 109   {"stack-info-depth", 0, 0, mi_cmd_stack_info_depth},
 110   {"stack-info-frame", 0, 0},
 111   {"stack-list-arguments", 0, 0, mi_cmd_stack_list_args},
 112   {"stack-list-exception-handlers", 0, 0},
 113   {"stack-list-frames", 0, 0, mi_cmd_stack_list_frames},
 114   {"stack-list-locals", 0, 0, mi_cmd_stack_list_locals},
 115   {"stack-select-frame", 0, 0, mi_cmd_stack_select_frame},
 116   {"symbol-info-address", 0, 0},
 117   {"symbol-info-file", 0, 0},
 118   {"symbol-info-function", 0, 0},
 119   {"symbol-info-line", 0, 0},
 120   {"symbol-info-symbol", 0, 0},
 121   {"symbol-list-functions", 0, 0},
 122   {"symbol-list-lines", 0, 0, mi_cmd_symbol_list_lines},
 123   {"symbol-list-types", 0, 0},
 124   {"symbol-list-variables", 0, 0},
 125   {"symbol-locate", 0, 0},
 126   {"symbol-type", 0, 0},
 127   {"target-attach", 0, 0},
 128   {"target-compare-sections", 0, 0},
 129   {"target-detach", "detach", 0},
 130   {"target-download", 0, mi_cmd_target_download},
 131   {"target-exec-status", 0, 0},
 132   {"target-list-available-targets", 0, 0},
 133   {"target-list-current-targets", 0, 0},
 134   {"target-list-parameters", 0, 0},
 135   {"target-select", 0, mi_cmd_target_select},
 136   {"thread-info", 0, 0},
 137   {"thread-list-all-threads", 0, 0},
 138   {"thread-list-ids", 0, 0, mi_cmd_thread_list_ids},
 139   {"thread-select", 0, 0, mi_cmd_thread_select},
 140   {"trace-actions", 0, 0},
 141   {"trace-delete", 0, 0},
 142   {"trace-disable", 0, 0},
 143   {"trace-dump", 0, 0},
 144   {"trace-enable", 0, 0},
 145   {"trace-exists", 0, 0},
 146   {"trace-find", 0, 0},
 147   {"trace-frame-number", 0, 0},
 148   {"trace-info", 0, 0},
 149   {"trace-insert", 0, 0},
 150   {"trace-list", 0, 0},
 151   {"trace-pass-count", 0, 0},
 152   {"trace-save", 0, 0},
 153   {"trace-start", 0, 0},
 154   {"trace-stop", 0, 0},
 155   {"var-assign", 0, 0, mi_cmd_var_assign},
 156   {"var-create", 0, 0, mi_cmd_var_create},
 157   {"var-delete", 0, 0, mi_cmd_var_delete},
 158   {"var-evaluate-expression", 0, 0, mi_cmd_var_evaluate_expression},
 159   {"var-info-expression", 0, 0, mi_cmd_var_info_expression},
 160   {"var-info-num-children", 0, 0, mi_cmd_var_info_num_children},
 161   {"var-info-type", 0, 0, mi_cmd_var_info_type},
 162   {"var-list-children", 0, 0, mi_cmd_var_list_children},
 163   {"var-set-format", 0, 0, mi_cmd_var_set_format},
 164   {"var-show-attributes", 0, 0, mi_cmd_var_show_attributes},
 165   {"var-show-format", 0, 0, mi_cmd_var_show_format},
 166   {"var-update", 0, 0, mi_cmd_var_update},
 167   {0,}
 168 };
 169
 170 /* Pointer to the mi command table (built at run time) */
 171
 172 static struct mi_cmd **mi_table;
 173
 174 /* A prime large enough to accomodate the entire command table */
 175 enum
 176   {
 177     MI_TABLE_SIZE = 227
 178   };
 179
 180 /* Exported function used to obtain info from the table */
 181 struct mi_cmd *
 182 mi_lookup (const char *command)
 183 {
 184   return *lookup_table (command);
 185 }
 186
 187 /* stat collecting */
 188 struct mi_cmd_stats
 189 {
 190   int hit;
 191   int miss;
 192   int rehash;
 193 };
 194 struct mi_cmd_stats stats;
 195
 196 /* our lookup function */
 197 static struct mi_cmd **
 198 lookup_table (const char *command)
 199 {
 200   const char *chp;
 201   unsigned int index = 0;
 202   /* compute our hash */
 203   for (chp = command; *chp; chp++)
 204     {
 205       /* some what arbitrary */
 206       index = ((index << 6) + (unsigned int) *chp) % MI_TABLE_SIZE;
 207     }
 208   /* look it up */
 209   while (1)
 210     {
 211       struct mi_cmd **entry = &mi_table[index];
 212       if ((*entry) == 0)
 213         {
 214           /* not found, return pointer to next free. */
 215           stats.miss++;
 216           return entry;
 217         }
 218       if (strcmp (command, (*entry)->name) == 0)
 219         {
 220           stats.hit++;
 221           return entry;         /* found */
 222         }
 223       index = (index + 1) % MI_TABLE_SIZE;
 224       stats.rehash++;
 225     }
 226 }
 227
 228 static void
 229 build_table (struct mi_cmd *commands)
 230 {
 231   int nr_rehash = 0;
 232   int nr_entries = 0;
 233   struct mi_cmd *command;
 234   int sizeof_table = sizeof (struct mi_cmd **) * MI_TABLE_SIZE;
 235
 236   mi_table = xmalloc (sizeof_table);
 237   memset (mi_table, 0, sizeof_table);
 238   for (command = commands; command->name != 0; command++)
 239     {
 240       struct mi_cmd **entry = lookup_table (command->name);
 241       if (*entry)
 242         internal_error (__FILE__, __LINE__,
 243                         "command `%s' appears to be duplicated",
 244                         command->name);
 245       *entry = command;
 246       if (0)
 247         {
 248           fprintf_unfiltered (gdb_stdlog, "%-30s %2d\n",
 249                               command->name, stats.rehash - nr_rehash);
 250         }
 251       nr_entries++;
 252       nr_rehash = stats.rehash;
 253     }
 254   if (0)
 255     {
 256       fprintf_filtered (gdb_stdlog, "Average %3.1f\n",
 257                         (double) nr_rehash / (double) nr_entries);
 258     }
 259 }
 260
 261 void
 262 _initialize_mi_cmds (void)
 263 {
 264   build_table (mi_cmds);
 265   memset (&stats, 0, sizeof (stats));
 266 }