gdb/mi/mi-cmds.c

   1 /* MI Command Set for GDB, the GNU debugger.
   2
   3    Copyright (C) 2000, 2001, 2003, 2007, 2008, 2009, 2010
   4    Free Software Foundation, Inc.
   5
   6    Contributed by Cygnus Solutions (a Red Hat company).
   7
   8    This file is part of GDB.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  22
  23 #include "defs.h"
  24 #include "top.h"
  25 #include "mi-cmds.h"
  26 #include "gdb_string.h"
  27
  28 extern void _initialize_mi_cmds (void);
  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
  34 struct mi_cmd mi_cmds[] =
  35 {
  36   { "break-after", { "ignore", 1 }, NULL },
  37   { "break-condition", { "cond", 1 }, NULL },
  38   { "break-commands", { NULL, 0 }, mi_cmd_break_commands },
  39   { "break-delete", { "delete breakpoint", 1 }, NULL },
  40   { "break-disable", { "disable breakpoint", 1 }, NULL },
  41   { "break-enable", { "enable breakpoint", 1 }, NULL },
  42   { "break-info", { "info break", 1 }, NULL },
  43   { "break-insert", { NULL, 0 }, mi_cmd_break_insert},
  44   { "break-list", { "info break", }, NULL },
  45   { "break-watch", { NULL, 0 }, mi_cmd_break_watch},
  46   { "data-disassemble", { NULL, 0 }, mi_cmd_disassemble},
  47   { "data-evaluate-expression", { NULL, 0 }, mi_cmd_data_evaluate_expression},
  48   { "data-list-changed-registers", { NULL, 0 }, mi_cmd_data_list_changed_registers},
  49   { "data-list-register-names", { NULL, 0 }, mi_cmd_data_list_register_names},
  50   { "data-list-register-values", { NULL, 0 }, mi_cmd_data_list_register_values},
  51   { "data-read-memory", { NULL, 0 }, mi_cmd_data_read_memory},
  52   { "data-write-memory", { NULL, 0 }, mi_cmd_data_write_memory},
  53   { "data-write-register-values", { NULL, 0 }, mi_cmd_data_write_register_values},
  54   { "enable-timings", { NULL, 0 }, mi_cmd_enable_timings},
  55   { "enable-pretty-printing", { NULL, 0 }, mi_cmd_enable_pretty_printing},
  56   { "environment-cd", { NULL, 0 }, mi_cmd_env_cd},
  57   { "environment-directory", { NULL, 0 }, mi_cmd_env_dir},
  58   { "environment-path", { NULL, 0 }, mi_cmd_env_path},
  59   { "environment-pwd", { NULL, 0 }, mi_cmd_env_pwd},
  60   { "exec-arguments", { "set args", 1 }, NULL },
  61   { "exec-continue", { NULL, 0 }, mi_cmd_exec_continue},
  62   { "exec-finish", { NULL, 0 }, mi_cmd_exec_finish},
  63   { "exec-jump", { NULL, 0 }, mi_cmd_exec_jump},
  64   { "exec-interrupt", { NULL, 0 }, mi_cmd_exec_interrupt},
  65   { "exec-next", { NULL, 0 }, mi_cmd_exec_next},
  66   { "exec-next-instruction", { NULL, 0 }, mi_cmd_exec_next_instruction},
  67   { "exec-return", { NULL, 0 }, mi_cmd_exec_return},
  68   { "exec-run", { "run", 1 }, NULL},
  69   { "exec-step", { NULL, 0 }, mi_cmd_exec_step},
  70   { "exec-step-instruction", { NULL, 0 }, mi_cmd_exec_step_instruction},
  71   { "exec-until", { "until", 1 }, NULL},
  72   { "file-exec-and-symbols", { "file", 1 }, NULL },
  73   { "file-exec-file", { "exec-file", 1 }, NULL },
  74   { "file-list-exec-source-file", { NULL, 0 }, mi_cmd_file_list_exec_source_file},
  75   { "file-list-exec-source-files", { NULL, 0 }, mi_cmd_file_list_exec_source_files },
  76   { "file-symbol-file", { "symbol-file", 1 }, NULL },
  77   { "gdb-exit", { NULL, 0 }, mi_cmd_gdb_exit},
  78   { "gdb-set", { "set", 1 }, NULL },
  79   { "gdb-show", { "show", 1 }, NULL },
  80   { "gdb-version", { "show version", 0 }, 0 },
  81   { "inferior-tty-set", { NULL, 0 }, mi_cmd_inferior_tty_set},
  82   { "inferior-tty-show", { NULL, 0 }, mi_cmd_inferior_tty_show},
  83   { "interpreter-exec", { NULL, 0 }, mi_cmd_interpreter_exec},
  84   { "list-features", { NULL, 0 }, mi_cmd_list_features},
  85   { "list-target-features", { NULL, 0 }, mi_cmd_list_target_features},
  86   { "list-thread-groups", { NULL, 0 }, mi_cmd_list_thread_groups },
  87   { "stack-info-depth", { NULL, 0 }, mi_cmd_stack_info_depth},
  88   { "stack-info-frame", { NULL, 0 }, mi_cmd_stack_info_frame},
  89   { "stack-list-arguments", { NULL, 0 }, mi_cmd_stack_list_args},
  90   { "stack-list-frames", { NULL, 0 }, mi_cmd_stack_list_frames},
  91   { "stack-list-locals", { NULL, 0 }, mi_cmd_stack_list_locals},
  92   { "stack-list-variables", { NULL, 0 }, mi_cmd_stack_list_variables},
  93   { "stack-select-frame", { NULL, 0 }, mi_cmd_stack_select_frame},
  94   { "symbol-list-lines", { NULL, 0 }, mi_cmd_symbol_list_lines},
  95   { "target-attach", { "attach", 1 }, NULL },
  96   { "target-detach", { NULL, 0 }, mi_cmd_target_detach },
  97   { "target-disconnect", { "disconnect", 0 }, 0 },
  98   { "target-download", { "load", 1 }, NULL},
  99   { "target-file-delete", { NULL, 0 }, mi_cmd_target_file_delete },
 100   { "target-file-get", { NULL, 0 }, mi_cmd_target_file_get },
 101   { "target-file-put", { NULL, 0 }, mi_cmd_target_file_put },
 102   { "target-select", { "target", 1 }, NULL},
 103   { "thread-info", { NULL, 0 }, mi_cmd_thread_info },
 104   { "thread-list-ids", { NULL, 0 }, mi_cmd_thread_list_ids},
 105   { "thread-select", { NULL, 0 }, mi_cmd_thread_select},
 106   { "var-assign", { NULL, 0 }, mi_cmd_var_assign},
 107   { "var-create", { NULL, 0 }, mi_cmd_var_create},
 108   { "var-delete", { NULL, 0 }, mi_cmd_var_delete},
 109   { "var-evaluate-expression", { NULL, 0 },  mi_cmd_var_evaluate_expression},
 110   { "var-info-path-expression", { NULL, 0 }, mi_cmd_var_info_path_expression},
 111   { "var-info-expression", { NULL, 0 }, mi_cmd_var_info_expression},
 112   { "var-info-num-children", { NULL, 0 }, mi_cmd_var_info_num_children},
 113   { "var-info-type", { NULL, 0 }, mi_cmd_var_info_type},
 114   { "var-list-children", { NULL, 0 }, mi_cmd_var_list_children},
 115   { "var-set-format", { NULL, 0 }, mi_cmd_var_set_format},
 116   { "var-set-frozen", { NULL, 0 }, mi_cmd_var_set_frozen},
 117   { "var-set-update-range", { NULL, 0 }, mi_cmd_var_set_update_range },
 118   { "var-set-visualizer", { NULL, 0 }, mi_cmd_var_set_visualizer},
 119   { "var-show-attributes", { NULL, 0 }, mi_cmd_var_show_attributes},
 120   { "var-show-format", { NULL, 0 }, mi_cmd_var_show_format},
 121   { "var-update", { NULL, 0 }, mi_cmd_var_update},
 122   { NULL, }
 123 };
 124
 125 /* Pointer to the mi command table (built at run time) */
 126
 127 static struct mi_cmd **mi_table;
 128
 129 /* A prime large enough to accomodate the entire command table */
 130 enum
 131   {
 132     MI_TABLE_SIZE = 227
 133   };
 134
 135 /* Exported function used to obtain info from the table */
 136 struct mi_cmd *
 137 mi_lookup (const char *command)
 138 {
 139   return *lookup_table (command);
 140 }
 141
 142 /* stat collecting */
 143 struct mi_cmd_stats
 144 {
 145   int hit;
 146   int miss;
 147   int rehash;
 148 };
 149 struct mi_cmd_stats stats;
 150
 151 /* our lookup function */
 152 static struct mi_cmd **
 153 lookup_table (const char *command)
 154 {
 155   const char *chp;
 156   unsigned int index = 0;
 157   /* compute our hash */
 158   for (chp = command; *chp; chp++)
 159     {
 160       /* some what arbitrary */
 161       index = ((index << 6) + (unsigned int) *chp) % MI_TABLE_SIZE;
 162     }
 163   /* look it up */
 164   while (1)
 165     {
 166       struct mi_cmd **entry = &mi_table[index];
 167       if ((*entry) == 0)
 168         {
 169           /* not found, return pointer to next free. */
 170           stats.miss++;
 171           return entry;
 172         }
 173       if (strcmp (command, (*entry)->name) == 0)
 174         {
 175           stats.hit++;
 176           return entry;         /* found */
 177         }
 178       index = (index + 1) % MI_TABLE_SIZE;
 179       stats.rehash++;
 180     }
 181 }
 182
 183 static void
 184 build_table (struct mi_cmd *commands)
 185 {
 186   int nr_rehash = 0;
 187   int nr_entries = 0;
 188   struct mi_cmd *command;
 189   int sizeof_table = sizeof (struct mi_cmd **) * MI_TABLE_SIZE;
 190
 191   mi_table = xmalloc (sizeof_table);
 192   memset (mi_table, 0, sizeof_table);
 193   for (command = commands; command->name != 0; command++)
 194     {
 195       struct mi_cmd **entry = lookup_table (command->name);
 196       if (*entry)
 197         internal_error (__FILE__, __LINE__,
 198                         _("command `%s' appears to be duplicated"),
 199                         command->name);
 200       *entry = command;
 201       if (0)
 202         {
 203           fprintf_unfiltered (gdb_stdlog, "%-30s %2d\n",
 204                               command->name, stats.rehash - nr_rehash);
 205         }
 206       nr_entries++;
 207       nr_rehash = stats.rehash;
 208     }
 209   if (0)
 210     {
 211       fprintf_filtered (gdb_stdlog, "Average %3.1f\n",
 212                         (double) nr_rehash / (double) nr_entries);
 213     }
 214 }
 215
 216 void
 217 _initialize_mi_cmds (void)
 218 {
 219   build_table (mi_cmds);
 220   memset (&stats, 0, sizeof (stats));
 221 }