sim/igen/gen-itable.c

   1 /* The IGEN simulator generator for GDB, the GNU Debugger.
   2
   3    Copyright 2002, 2007 Free Software Foundation, Inc.
   4
   5    Contributed by Andrew Cagney.
   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
  25
  26 #include "misc.h"
  27 #include "lf.h"
  28 #include "table.h"
  29 #include "filter.h"
  30 #include "igen.h"
  31
  32 #include "ld-insn.h"
  33 #include "ld-decode.h"
  34
  35 #include "gen.h"
  36
  37 #include "gen-itable.h"
  38
  39 #ifndef NULL
  40 #define NULL 0
  41 #endif
  42
  43
  44
  45 typedef struct _itable_info
  46 {
  47   int sizeof_form;
  48   int sizeof_name;
  49   int sizeof_file;
  50 }
  51 itable_info;
  52
  53
  54 static void
  55 itable_h_insn (lf *file,
  56                insn_table *entry, insn_entry * instruction, void *data)
  57 {
  58   int len;
  59   itable_info *info = data;
  60   lf_print__line_ref (file, instruction->line);
  61   lf_printf (file, "  ");
  62   print_function_name (file,
  63                        instruction->name,
  64                        instruction->format_name,
  65                        NULL, NULL, function_name_prefix_itable);
  66   lf_printf (file, ",\n");
  67   /* update summary info */
  68   len = strlen (instruction->format_name);
  69   if (info->sizeof_form <= len)
  70     info->sizeof_form = len + 1;
  71   len = strlen (instruction->name);
  72   if (info->sizeof_name <= len)
  73     info->sizeof_name = len + 1;
  74   len = strlen (filter_filename (instruction->line->file_name));
  75   if (info->sizeof_file <= len)
  76     info->sizeof_file = len + 1;
  77 }
  78
  79
  80 /* print the list of all the different options */
  81
  82 static void
  83 itable_print_enum (lf *file, filter *set, char *name)
  84 {
  85   char *elem;
  86   lf_printf (file, "typedef enum {\n");
  87   lf_indent (file, +2);
  88   for (elem = filter_next (set, "");
  89        elem != NULL; elem = filter_next (set, elem))
  90     {
  91       lf_printf (file, "%sitable_%s_%s,\n",
  92                  options.module.itable.prefix.l, name, elem);
  93       if (strlen (options.module.itable.prefix.l) > 0)
  94         {
  95           lf_indent_suppress (file);
  96           lf_printf (file, "#define itable_%s_%s %sitable_%s_%s\n",
  97                      name, elem, options.module.itable.prefix.l, name, elem);
  98         }
  99     }
 100   lf_printf (file, "nr_%sitable_%ss,\n", options.module.itable.prefix.l,
 101              name);
 102
 103   lf_indent (file, -2);
 104   lf_printf (file, "} %sitable_%ss;\n", options.module.itable.prefix.l, name);
 105   if (strlen (options.module.itable.prefix.l) > 0)
 106     {
 107       lf_indent_suppress (file);
 108       lf_printf (file, "#define itable_%ss %sitable_%ss\n",
 109                  name, options.module.itable.prefix.l, name);
 110       lf_indent_suppress (file);
 111       lf_printf (file, "#define nr_itable_%ss nr_%sitable_%ss\n",
 112                  name, options.module.itable.prefix.l, name);
 113     }
 114 }
 115
 116 /* print an array of the option names as strings */
 117
 118 static void
 119 itable_print_names (lf *file, filter *set, char *name)
 120 {
 121   char *elem;
 122   lf_printf (file, "const char *%sitable_%s_names[nr_%sitable_%ss + 1] = {\n",
 123              options.module.itable.prefix.l, name,
 124              options.module.itable.prefix.l, name);
 125   lf_indent (file, +2);
 126   for (elem = filter_next (set, "");
 127        elem != NULL; elem = filter_next (set, elem))
 128     {
 129       lf_printf (file, "\"%s\",\n", elem);
 130     }
 131   lf_printf (file, "0,\n");
 132   lf_indent (file, -2);
 133   lf_printf (file, "};\n");
 134 }
 135
 136 extern void
 137 gen_itable_h (lf *file, insn_table *isa)
 138 {
 139   itable_info *info = ZALLOC (itable_info);
 140
 141   /* output an enumerated type for each instruction */
 142   lf_printf (file, "typedef enum {\n");
 143   insn_table_traverse_insn (file, isa, itable_h_insn, info);
 144   lf_printf (file, "  nr_%sitable_entries,\n",
 145              options.module.itable.prefix.l);
 146   lf_printf (file, "} %sitable_index;\n", options.module.itable.prefix.l);
 147   lf_printf (file, "\n");
 148
 149   /* output an enumeration type for each flag */
 150   itable_print_enum (file, isa->flags, "flag");
 151   lf_printf (file, "extern const char *%sitable_flag_names[];\n",
 152              options.module.itable.prefix.l);
 153   lf_printf (file, "\n");
 154
 155   /* output an enumeration of all the possible options */
 156   itable_print_enum (file, isa->options, "option");
 157   lf_printf (file, "extern const char *%sitable_option_names[];\n",
 158              options.module.itable.prefix.l);
 159   lf_printf (file, "\n");
 160
 161   /* output an enumeration of all the processor models */
 162   itable_print_enum (file, isa->model->processors, "processor");
 163   lf_printf (file, "extern const char *%sitable_processor_names[];\n",
 164              options.module.itable.prefix.l);
 165   lf_printf (file, "\n");
 166
 167   /* output the table that contains the actual instruction info */
 168   lf_printf (file, "typedef struct _%sitable_instruction_info {\n",
 169              options.module.itable.prefix.l);
 170   lf_printf (file, "  %sitable_index nr;\n", options.module.itable.prefix.l);
 171   lf_printf (file, "  char *format;\n");
 172   lf_printf (file, "  char *form;\n");
 173   lf_printf (file, "  char *flags;\n");
 174
 175   /* nr_itable_* may be zero, so we add 1 to avoid an
 176      illegal zero-sized array. */
 177   lf_printf (file, "  char flag[nr_%sitable_flags + 1];\n",
 178              options.module.itable.prefix.l);
 179   lf_printf (file, "  char *options;\n");
 180   lf_printf (file, "  char option[nr_%sitable_options + 1];\n",
 181              options.module.itable.prefix.l);
 182   lf_printf (file, "  char *processors;\n");
 183   lf_printf (file, "  char processor[nr_%sitable_processors + 1];\n",
 184              options.module.itable.prefix.l);
 185   lf_printf (file, "  char *name;\n");
 186   lf_printf (file, "  char *file;\n");
 187   lf_printf (file, "  int line_nr;\n");
 188   lf_printf (file, "} %sitable_info;\n", options.module.itable.prefix.l);
 189   lf_printf (file, "\n");
 190   lf_printf (file, "extern %sitable_info %sitable[nr_%sitable_entries];\n",
 191              options.module.itable.prefix.l, options.module.itable.prefix.l,
 192              options.module.itable.prefix.l);
 193   if (strlen (options.module.itable.prefix.l) > 0)
 194     {
 195       lf_indent_suppress (file);
 196       lf_printf (file, "#define itable %sitable\n",
 197                  options.module.itable.prefix.l);
 198     }
 199   lf_printf (file, "\n");
 200
 201   /* output an enum defining the max size of various itable members */
 202   lf_printf (file, "enum {\n");
 203   lf_printf (file, "  sizeof_%sitable_form = %d,\n",
 204              options.module.itable.prefix.l, info->sizeof_form);
 205   lf_printf (file, "  sizeof_%sitable_name = %d,\n",
 206              options.module.itable.prefix.l, info->sizeof_name);
 207   lf_printf (file, "  sizeof_%sitable_file = %d,\n",
 208              options.module.itable.prefix.l, info->sizeof_file);
 209   lf_printf (file, "};\n");
 210 }
 211
 212
 213 /****************************************************************/
 214
 215 static void
 216 itable_print_set (lf *file, filter *set, filter *members)
 217 {
 218   char *elem;
 219   lf_printf (file, "\"");
 220   elem = filter_next (members, "");
 221   if (elem != NULL)
 222     {
 223       while (1)
 224         {
 225           lf_printf (file, "%s", elem);
 226           elem = filter_next (members, elem);
 227           if (elem == NULL)
 228             break;
 229           lf_printf (file, ",");
 230         }
 231     }
 232   lf_printf (file, "\",\n");
 233
 234   lf_printf (file, "{");
 235   for (elem = filter_next (set, "");
 236        elem != NULL; elem = filter_next (set, elem))
 237     {
 238       if (filter_is_member (members, elem))
 239         {
 240           lf_printf (file, " 1,");
 241         }
 242       else
 243         {
 244           lf_printf (file, " 0,");
 245         }
 246
 247     }
 248   /* always print a dummy element, to avoid empty initializers. */
 249   lf_printf (file, " 99 },\n");
 250 }
 251
 252
 253 static void
 254 itable_c_insn (lf *file,
 255                insn_table *isa, insn_entry * instruction, void *data)
 256 {
 257   lf_printf (file, "{ ");
 258   lf_indent (file, +2);
 259   print_function_name (file,
 260                        instruction->name,
 261                        instruction->format_name,
 262                        NULL, NULL, function_name_prefix_itable);
 263   lf_printf (file, ",\n");
 264   lf_printf (file, "\"");
 265   print_insn_words (file, instruction);
 266   lf_printf (file, "\",\n");
 267   lf_printf (file, "\"%s\",\n", instruction->format_name);
 268
 269   itable_print_set (file, isa->flags, instruction->flags);
 270   itable_print_set (file, isa->options, instruction->options);
 271   itable_print_set (file, isa->model->processors, instruction->processors);
 272
 273   lf_printf (file, "\"%s\",\n", instruction->name);
 274   lf_printf (file, "\"%s\",\n",
 275              filter_filename (instruction->line->file_name));
 276   lf_printf (file, "%d,\n", instruction->line->line_nr);
 277   lf_printf (file, "},\n");
 278   lf_indent (file, -2);
 279 }
 280
 281
 282 extern void
 283 gen_itable_c (lf *file, insn_table *isa)
 284 {
 285   /* leader */
 286   lf_printf (file, "#include \"%sitable.h\"\n",
 287              options.module.itable.prefix.l);
 288   lf_printf (file, "\n");
 289
 290   /* FIXME - output model data??? */
 291   /* FIXME - output assembler data??? */
 292
 293   /* output the flag, option and processor name tables */
 294   itable_print_names (file, isa->flags, "flag");
 295   itable_print_names (file, isa->options, "option");
 296   itable_print_names (file, isa->model->processors, "processor");
 297
 298   /* output the table that contains the actual instruction info */
 299   lf_printf (file, "%sitable_info %sitable[nr_%sitable_entries] = {\n",
 300              options.module.itable.prefix.l,
 301              options.module.itable.prefix.l, options.module.itable.prefix.l);
 302   insn_table_traverse_insn (file, isa, itable_c_insn, NULL);
 303
 304   lf_printf (file, "};\n");
 305 }