gdb/mi/mi-cmds.c

   1 /* MI Command Set for GDB, the GNU debugger.
   2    Copyright (C) 2000-2001, 2003, 2007-2012 Free Software Foundation,
   3    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 3 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, see <http://www.gnu.org/licenses/>.  */
  21
  22 #include "defs.h"
  23 #include "top.h"
  24 #include "mi-cmds.h"
  25 #include "gdb_string.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 struct mi_cmd mi_cmds[] =
  34 {
  35   { "ada-task-info", { NULL, 0 }, mi_cmd_ada_task_info },
  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-passcount", { NULL, 0 }, mi_cmd_break_passcount},
  47   { "break-watch", { NULL, 0 }, mi_cmd_break_watch},
  48   { "data-disassemble", { NULL, 0 }, mi_cmd_disassemble},
  49   { "data-evaluate-expression", { NULL, 0 }, mi_cmd_data_evaluate_expression},
  50   { "data-list-changed-registers", { NULL, 0 },
  51     mi_cmd_data_list_changed_registers},
  52   { "data-list-register-names", { NULL, 0 }, mi_cmd_data_list_register_names},
  53   { "data-list-register-values", { NULL, 0 },
  54     mi_cmd_data_list_register_values},
  55   { "data-read-memory", { NULL, 0 }, mi_cmd_data_read_memory},
  56   { "data-read-memory-bytes", { NULL, 0 }, mi_cmd_data_read_memory_bytes},
  57   { "data-write-memory", { NULL, 0 }, mi_cmd_data_write_memory},
  58   { "data-write-memory-bytes", {NULL, 0}, mi_cmd_data_write_memory_bytes},
  59   { "data-write-register-values", { NULL, 0 },
  60     mi_cmd_data_write_register_values},
  61   { "enable-timings", { NULL, 0 }, mi_cmd_enable_timings},
  62   { "enable-pretty-printing", { NULL, 0 }, mi_cmd_enable_pretty_printing},
  63   { "environment-cd", { NULL, 0 }, mi_cmd_env_cd},
  64   { "environment-directory", { NULL, 0 }, mi_cmd_env_dir},
  65   { "environment-path", { NULL, 0 }, mi_cmd_env_path},
  66   { "environment-pwd", { NULL, 0 }, mi_cmd_env_pwd},
  67   { "exec-arguments", { "set args", 1 }, NULL },
  68   { "exec-continue", { NULL, 0 }, mi_cmd_exec_continue},
  69   { "exec-finish", { NULL, 0 }, mi_cmd_exec_finish},
  70   { "exec-jump", { NULL, 0 }, mi_cmd_exec_jump},
  71   { "exec-interrupt", { NULL, 0 }, mi_cmd_exec_interrupt},
  72   { "exec-next", { NULL, 0 }, mi_cmd_exec_next},
  73   { "exec-next-instruction", { NULL, 0 }, mi_cmd_exec_next_instruction},
  74   { "exec-return", { NULL, 0 }, mi_cmd_exec_return},
  75   { "exec-run", { NULL, 0}, mi_cmd_exec_run},
  76   { "exec-step", { NULL, 0 }, mi_cmd_exec_step},
  77   { "exec-step-instruction", { NULL, 0 }, mi_cmd_exec_step_instruction},
  78   { "exec-until", { "until", 1 }, NULL},
  79   { "file-exec-and-symbols", { "file", 1 }, NULL },
  80   { "file-exec-file", { "exec-file", 1 }, NULL },
  81   { "file-list-exec-source-file", { NULL, 0 },
  82     mi_cmd_file_list_exec_source_file},
  83   { "file-list-exec-source-files", { NULL, 0 },
  84     mi_cmd_file_list_exec_source_files },
  85   { "file-symbol-file", { "symbol-file", 1 }, NULL },
  86   { "gdb-exit", { NULL, 0 }, mi_cmd_gdb_exit},
  87   { "gdb-set", { "set", 1 }, NULL },
  88   { "gdb-show", { "show", 1 }, NULL },
  89   { "gdb-version", { "show version", 0 }, 0 },
  90   { "inferior-tty-set", { NULL, 0 }, mi_cmd_inferior_tty_set},
  91   { "inferior-tty-show", { NULL, 0 }, mi_cmd_inferior_tty_show},
  92   { "info-os", { NULL, 0 }, mi_cmd_info_os},
  93   { "interpreter-exec", { NULL, 0 }, mi_cmd_interpreter_exec},
  94   { "list-features", { NULL, 0 }, mi_cmd_list_features},
  95   { "list-target-features", { NULL, 0 }, mi_cmd_list_target_features},
  96   { "list-thread-groups", { NULL, 0 }, mi_cmd_list_thread_groups },
  97   { "remove-inferior", { NULL, 0 }, mi_cmd_remove_inferior },
  98   { "stack-info-depth", { NULL, 0 }, mi_cmd_stack_info_depth},
  99   { "stack-info-frame", { NULL, 0 }, mi_cmd_stack_info_frame},
 100   { "stack-list-arguments", { NULL, 0 }, mi_cmd_stack_list_args},
 101   { "stack-list-frames", { NULL, 0 }, mi_cmd_stack_list_frames},
 102   { "stack-list-locals", { NULL, 0 }, mi_cmd_stack_list_locals},
 103   { "stack-list-variables", { NULL, 0 }, mi_cmd_stack_list_variables},
 104   { "stack-select-frame", { NULL, 0 }, mi_cmd_stack_select_frame},
 105   { "symbol-list-lines", { NULL, 0 }, mi_cmd_symbol_list_lines},
 106   { "target-attach", { "attach", 1 }, NULL },
 107   { "target-detach", { NULL, 0 }, mi_cmd_target_detach },
 108   { "target-disconnect", { "disconnect", 0 }, 0 },
 109   { "target-download", { "load", 1 }, NULL},
 110   { "target-file-delete", { NULL, 0 }, mi_cmd_target_file_delete },
 111   { "target-file-get", { NULL, 0 }, mi_cmd_target_file_get },
 112   { "target-file-put", { NULL, 0 }, mi_cmd_target_file_put },
 113   { "target-select", { "target", 1 }, NULL},
 114   { "thread-info", { NULL, 0 }, mi_cmd_thread_info },
 115   { "thread-list-ids", { NULL, 0 }, mi_cmd_thread_list_ids},
 116   { "thread-select", { NULL, 0 }, mi_cmd_thread_select},
 117   { "trace-define-variable", { NULL, 0 }, mi_cmd_trace_define_variable },
 118   { "trace-find", { NULL, 0 }, mi_cmd_trace_find },
 119   { "trace-list-variables", { NULL, 0 }, mi_cmd_trace_list_variables },
 120   { "trace-save", { NULL, 0 }, mi_cmd_trace_save },
 121   { "trace-start", { NULL, 0 }, mi_cmd_trace_start },
 122   { "trace-status", { NULL, 0 }, mi_cmd_trace_status },
 123   { "trace-stop", { NULL, 0 }, mi_cmd_trace_stop },
 124   { "var-assign", { NULL, 0 }, mi_cmd_var_assign},
 125   { "var-create", { NULL, 0 }, mi_cmd_var_create},
 126   { "var-delete", { NULL, 0 }, mi_cmd_var_delete},
 127   { "var-evaluate-expression", { NULL, 0 },  mi_cmd_var_evaluate_expression},
 128   { "var-info-path-expression", { NULL, 0 }, mi_cmd_var_info_path_expression},
 129   { "var-info-expression", { NULL, 0 }, mi_cmd_var_info_expression},
 130   { "var-info-num-children", { NULL, 0 }, mi_cmd_var_info_num_children},
 131   { "var-info-type", { NULL, 0 }, mi_cmd_var_info_type},
 132   { "var-list-children", { NULL, 0 }, mi_cmd_var_list_children},
 133   { "var-set-format", { NULL, 0 }, mi_cmd_var_set_format},
 134   { "var-set-frozen", { NULL, 0 }, mi_cmd_var_set_frozen},
 135   { "var-set-update-range", { NULL, 0 }, mi_cmd_var_set_update_range },
 136   { "var-set-visualizer", { NULL, 0 }, mi_cmd_var_set_visualizer},
 137   { "var-show-attributes", { NULL, 0 }, mi_cmd_var_show_attributes},
 138   { "var-show-format", { NULL, 0 }, mi_cmd_var_show_format},
 139   { "var-update", { NULL, 0 }, mi_cmd_var_update},
 140   { NULL, }
 141 };
 142
 143 /* Pointer to the mi command table (built at run time). */
 144
 145 static struct mi_cmd **mi_table;
 146
 147 /* A prime large enough to accomodate the entire command table.  */
 148 enum
 149   {
 150     MI_TABLE_SIZE = 227
 151   };
 152
 153 /* Exported function used to obtain info from the table.  */
 154 struct mi_cmd *
 155 mi_lookup (const char *command)
 156 {
 157   return *lookup_table (command);
 158 }
 159
 160 /* Used for collecting hash hit/miss statistics.  */
 161
 162 struct mi_cmd_stats
 163 {
 164   int hit;
 165   int miss;
 166   int rehash;
 167 };
 168 struct mi_cmd_stats stats;
 169
 170 /* Look up a command.  */
 171
 172 static struct mi_cmd **
 173 lookup_table (const char *command)
 174 {
 175   const char *chp;
 176   unsigned int index = 0;
 177
 178   /* Compute our hash.  */
 179   for (chp = command; *chp; chp++)
 180     {
 181       /* We use a somewhat arbitrary formula.  */
 182       index = ((index << 6) + (unsigned int) *chp) % MI_TABLE_SIZE;
 183     }
 184
 185   while (1)
 186     {
 187       struct mi_cmd **entry = &mi_table[index];
 188       if ((*entry) == 0)
 189         {
 190           /* not found, return pointer to next free. */
 191           stats.miss++;
 192           return entry;
 193         }
 194       if (strcmp (command, (*entry)->name) == 0)
 195         {
 196           stats.hit++;
 197           return entry;         /* found */
 198         }
 199       index = (index + 1) % MI_TABLE_SIZE;
 200       stats.rehash++;
 201     }
 202 }
 203
 204 static void
 205 build_table (struct mi_cmd *commands)
 206 {
 207   int nr_rehash = 0;
 208   int nr_entries = 0;
 209   struct mi_cmd *command;
 210   int sizeof_table = sizeof (struct mi_cmd **) * MI_TABLE_SIZE;
 211
 212   mi_table = xmalloc (sizeof_table);
 213   memset (mi_table, 0, sizeof_table);
 214   for (command = commands; command->name != 0; command++)
 215     {
 216       struct mi_cmd **entry = lookup_table (command->name);
 217
 218       if (*entry)
 219         internal_error (__FILE__, __LINE__,
 220                         _("command `%s' appears to be duplicated"),
 221                         command->name);
 222       *entry = command;
 223       /* FIXME lose these prints */
 224       if (0)
 225         {
 226           fprintf_unfiltered (gdb_stdlog, "%-30s %2d\n",
 227                               command->name, stats.rehash - nr_rehash);
 228         }
 229       nr_entries++;
 230       nr_rehash = stats.rehash;
 231     }
 232   if (0)
 233     {
 234       fprintf_filtered (gdb_stdlog, "Average %3.1f\n",
 235                         (double) nr_rehash / (double) nr_entries);
 236     }
 237 }
 238
 239 void
 240 _initialize_mi_cmds (void)
 241 {
 242   build_table (mi_cmds);
 243   memset (&stats, 0, sizeof (stats));
 244 }