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   { "add-inferior", { NULL, 0 }, mi_cmd_add_inferior },
  37   { "break-after", { "ignore", 1 }, NULL },
  38   { "break-condition", { "cond", 1 }, NULL },
  39   { "break-commands", { NULL, 0 }, mi_cmd_break_commands },
  40   { "break-delete", { "delete breakpoint", 1 }, NULL },
  41   { "break-disable", { "disable breakpoint", 1 }, NULL },
  42   { "break-enable", { "enable breakpoint", 1 }, NULL },
  43   { "break-info", { "info break", 1 }, NULL },
  44   { "break-insert", { NULL, 0 }, mi_cmd_break_insert},
  45   { "break-list", { "info break", }, NULL },
  46   { "break-watch", { NULL, 0 }, mi_cmd_break_watch},
  47   { "data-disassemble", { NULL, 0 }, mi_cmd_disassemble},
  48   { "data-evaluate-expression", { NULL, 0 }, mi_cmd_data_evaluate_expression},
  49   { "data-list-changed-registers", { NULL, 0 }, mi_cmd_data_list_changed_registers},
  50   { "data-list-register-names", { NULL, 0 }, mi_cmd_data_list_register_names},
  51   { "data-list-register-values", { NULL, 0 }, mi_cmd_data_list_register_values},
  52   { "data-read-memory", { NULL, 0 }, mi_cmd_data_read_memory},
  53   { "data-write-memory", { NULL, 0 }, mi_cmd_data_write_memory},
  54   { "data-write-register-values", { NULL, 0 }, mi_cmd_data_write_register_values},
  55   { "enable-timings", { NULL, 0 }, mi_cmd_enable_timings},
  56   { "enable-pretty-printing", { NULL, 0 }, mi_cmd_enable_pretty_printing},
  57   { "environment-cd", { NULL, 0 }, mi_cmd_env_cd},
  58   { "environment-directory", { NULL, 0 }, mi_cmd_env_dir},
  59   { "environment-path", { NULL, 0 }, mi_cmd_env_path},
  60   { "environment-pwd", { NULL, 0 }, mi_cmd_env_pwd},
  61   { "exec-arguments", { "set args", 1 }, NULL },
  62   { "exec-continue", { NULL, 0 }, mi_cmd_exec_continue},
  63   { "exec-finish", { NULL, 0 }, mi_cmd_exec_finish},
  64   { "exec-jump", { NULL, 0 }, mi_cmd_exec_jump},
  65   { "exec-interrupt", { NULL, 0 }, mi_cmd_exec_interrupt},
  66   { "exec-next", { NULL, 0 }, mi_cmd_exec_next},
  67   { "exec-next-instruction", { NULL, 0 }, mi_cmd_exec_next_instruction},
  68   { "exec-return", { NULL, 0 }, mi_cmd_exec_return},
  69   { "exec-run", { NULL, 0}, mi_cmd_exec_run},
  70   { "exec-step", { NULL, 0 }, mi_cmd_exec_step},
  71   { "exec-step-instruction", { NULL, 0 }, mi_cmd_exec_step_instruction},
  72   { "exec-until", { "until", 1 }, NULL},
  73   { "file-exec-and-symbols", { "file", 1 }, NULL },
  74   { "file-exec-file", { "exec-file", 1 }, NULL },
  75   { "file-list-exec-source-file", { NULL, 0 }, mi_cmd_file_list_exec_source_file},
  76   { "file-list-exec-source-files", { NULL, 0 }, mi_cmd_file_list_exec_source_files },
  77   { "file-symbol-file", { "symbol-file", 1 }, NULL },
  78   { "gdb-exit", { NULL, 0 }, mi_cmd_gdb_exit},
  79   { "gdb-set", { "set", 1 }, NULL },
  80   { "gdb-show", { "show", 1 }, NULL },
  81   { "gdb-version", { "show version", 0 }, 0 },
  82   { "inferior-tty-set", { NULL, 0 }, mi_cmd_inferior_tty_set},
  83   { "inferior-tty-show", { NULL, 0 }, mi_cmd_inferior_tty_show},
  84   { "interpreter-exec", { NULL, 0 }, mi_cmd_interpreter_exec},
  85   { "list-features", { NULL, 0 }, mi_cmd_list_features},
  86   { "list-target-features", { NULL, 0 }, mi_cmd_list_target_features},
  87   { "list-thread-groups", { NULL, 0 }, mi_cmd_list_thread_groups },
  88   { "remove-inferior", { NULL, 0 }, mi_cmd_remove_inferior },
  89   { "stack-info-depth", { NULL, 0 }, mi_cmd_stack_info_depth},
  90   { "stack-info-frame", { NULL, 0 }, mi_cmd_stack_info_frame},
  91   { "stack-list-arguments", { NULL, 0 }, mi_cmd_stack_list_args},
  92   { "stack-list-frames", { NULL, 0 }, mi_cmd_stack_list_frames},
  93   { "stack-list-locals", { NULL, 0 }, mi_cmd_stack_list_locals},
  94   { "stack-list-variables", { NULL, 0 }, mi_cmd_stack_list_variables},
  95   { "stack-select-frame", { NULL, 0 }, mi_cmd_stack_select_frame},
  96   { "symbol-list-lines", { NULL, 0 }, mi_cmd_symbol_list_lines},
  97   { "target-attach", { "attach", 1 }, NULL },
  98   { "target-detach", { NULL, 0 }, mi_cmd_target_detach },
  99   { "target-disconnect", { "disconnect", 0 }, 0 },
 100   { "target-download", { "load", 1 }, NULL},
 101   { "target-file-delete", { NULL, 0 }, mi_cmd_target_file_delete },
 102   { "target-file-get", { NULL, 0 }, mi_cmd_target_file_get },
 103   { "target-file-put", { NULL, 0 }, mi_cmd_target_file_put },
 104   { "target-select", { "target", 1 }, NULL},
 105   { "thread-info", { NULL, 0 }, mi_cmd_thread_info },
 106   { "thread-list-ids", { NULL, 0 }, mi_cmd_thread_list_ids},
 107   { "thread-select", { NULL, 0 }, mi_cmd_thread_select},
 108   { "var-assign", { NULL, 0 }, mi_cmd_var_assign},
 109   { "var-create", { NULL, 0 }, mi_cmd_var_create},
 110   { "var-delete", { NULL, 0 }, mi_cmd_var_delete},
 111   { "var-evaluate-expression", { NULL, 0 },  mi_cmd_var_evaluate_expression},
 112   { "var-info-path-expression", { NULL, 0 }, mi_cmd_var_info_path_expression},
 113   { "var-info-expression", { NULL, 0 }, mi_cmd_var_info_expression},
 114   { "var-info-num-children", { NULL, 0 }, mi_cmd_var_info_num_children},
 115   { "var-info-type", { NULL, 0 }, mi_cmd_var_info_type},
 116   { "var-list-children", { NULL, 0 }, mi_cmd_var_list_children},
 117   { "var-set-format", { NULL, 0 }, mi_cmd_var_set_format},
 118   { "var-set-frozen", { NULL, 0 }, mi_cmd_var_set_frozen},
 119   { "var-set-update-range", { NULL, 0 }, mi_cmd_var_set_update_range },
 120   { "var-set-visualizer", { NULL, 0 }, mi_cmd_var_set_visualizer},
 121   { "var-show-attributes", { NULL, 0 }, mi_cmd_var_show_attributes},
 122   { "var-show-format", { NULL, 0 }, mi_cmd_var_show_format},
 123   { "var-update", { NULL, 0 }, mi_cmd_var_update},
 124   { NULL, }
 125 };
 126
 127 /* Pointer to the mi command table (built at run time) */
 128
 129 static struct mi_cmd **mi_table;
 130
 131 /* A prime large enough to accomodate the entire command table */
 132 enum
 133   {
 134     MI_TABLE_SIZE = 227
 135   };
 136
 137 /* Exported function used to obtain info from the table */
 138 struct mi_cmd *
 139 mi_lookup (const char *command)
 140 {
 141   return *lookup_table (command);
 142 }
 143
 144 /* stat collecting */
 145 struct mi_cmd_stats
 146 {
 147   int hit;
 148   int miss;
 149   int rehash;
 150 };
 151 struct mi_cmd_stats stats;
 152
 153 /* our lookup function */
 154 static struct mi_cmd **
 155 lookup_table (const char *command)
 156 {
 157   const char *chp;
 158   unsigned int index = 0;
 159   /* compute our hash */
 160   for (chp = command; *chp; chp++)
 161     {
 162       /* some what arbitrary */
 163       index = ((index << 6) + (unsigned int) *chp) % MI_TABLE_SIZE;
 164     }
 165   /* look it up */
 166   while (1)
 167     {
 168       struct mi_cmd **entry = &mi_table[index];
 169       if ((*entry) == 0)
 170         {
 171           /* not found, return pointer to next free. */
 172           stats.miss++;
 173           return entry;
 174         }
 175       if (strcmp (command, (*entry)->name) == 0)
 176         {
 177           stats.hit++;
 178           return entry;         /* found */
 179         }
 180       index = (index + 1) % MI_TABLE_SIZE;
 181       stats.rehash++;
 182     }
 183 }
 184
 185 static void
 186 build_table (struct mi_cmd *commands)
 187 {
 188   int nr_rehash = 0;
 189   int nr_entries = 0;
 190   struct mi_cmd *command;
 191   int sizeof_table = sizeof (struct mi_cmd **) * MI_TABLE_SIZE;
 192
 193   mi_table = xmalloc (sizeof_table);
 194   memset (mi_table, 0, sizeof_table);
 195   for (command = commands; command->name != 0; command++)
 196     {
 197       struct mi_cmd **entry = lookup_table (command->name);
 198       if (*entry)
 199         internal_error (__FILE__, __LINE__,
 200                         _("command `%s' appears to be duplicated"),
 201                         command->name);
 202       *entry = command;
 203       if (0)
 204         {
 205           fprintf_unfiltered (gdb_stdlog, "%-30s %2d\n",
 206                               command->name, stats.rehash - nr_rehash);
 207         }
 208       nr_entries++;
 209       nr_rehash = stats.rehash;
 210     }
 211   if (0)
 212     {
 213       fprintf_filtered (gdb_stdlog, "Average %3.1f\n",
 214                         (double) nr_rehash / (double) nr_entries);
 215     }
 216 }
 217
 218 void
 219 _initialize_mi_cmds (void)
 220 {
 221   build_table (mi_cmds);
 222   memset (&stats, 0, sizeof (stats));
 223 }