sim/ppc/ld-insn.h

   1 /*  This file is part of the program psim.
   2
   3     Copyright 1994, 1995, 1996, 2003 Andrew Cagney
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 3 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, see <http://www.gnu.org/licenses/>.
  17
  18     */
  19
  20 /*
  21 #   --
  22 #
  23 #
  24 # Fields:
  25 #
  26 #       1       Instruction format as a `start-bit,content' pairs.
  27 #               the content is one of a digit, field name or `/' (aka.0)
  28 #
  29 #       2       Format specifier
  30 #
  31 #       3       Flags:  64 - 64bit only
  32 #                       f - floating point enabled required
  33 #
  34 #       4       short name
  35 #
  36 #       5       Description
  37 #
  38 #
  39 # For flags marked 'model', the fields are interpreted as follows:
  40 #
  41 #       1       Not used
  42 #
  43 #       2       Not used
  44 #
  45 #       3       "macro"
  46 #
  47 #       4       String name for model
  48 #
  49 #       5       Specific CPU model, must be an identifier
  50 #
  51 #       6       Comma separated list of functional units
  52
  53 */
  54
  55
  56 /* Global constants */
  57
  58 enum {
  59   ppc_max_insn_bit_size = 32,
  60 };
  61
  62
  63 typedef struct _insn_field insn_field;
  64 struct _insn_field {
  65   int first;
  66   int last;
  67   int width;
  68   int is_int;
  69   int is_slash;
  70   int is_string;
  71   int val_int;
  72   char *pos_string;
  73   char *val_string;
  74   insn_field *next;
  75   insn_field *prev;
  76 };
  77
  78 typedef struct _insn_fields insn_fields;
  79 struct _insn_fields {
  80   insn_field *bits[ppc_max_insn_bit_size];
  81   insn_field *first;
  82   insn_field *last;
  83   unsigned value;
  84 };
  85
  86
  87 /****************************************************************/
  88
  89 typedef struct _opcode_field opcode_field;
  90 struct _opcode_field {
  91   int first;
  92   int last;
  93   int is_boolean;
  94   unsigned boolean_constant;
  95   opcode_field *parent;
  96 };
  97
  98
  99 /****************************************************************/
 100
 101 typedef struct _insn_bits insn_bits;
 102 struct _insn_bits {
 103   int is_expanded;
 104   int value;
 105   insn_field *field;
 106   opcode_field *opcode;
 107   insn_bits *last;
 108 };
 109
 110
 111 /****************************************************************/
 112
 113
 114 typedef enum {
 115   insn_format,
 116   insn_form,
 117   insn_flags,
 118   insn_mnemonic,
 119   insn_name,
 120   insn_comment,
 121   insn_field_6,
 122   insn_field_7,
 123   nr_insn_table_fields
 124 } insn_table_fields;
 125
 126 typedef enum {
 127   function_type = insn_format,
 128   function_name = insn_name,
 129   function_param = insn_comment
 130 } function_table_fields;
 131
 132 typedef enum {
 133   model_name = insn_mnemonic,
 134   model_identifer = insn_name,
 135   model_default = insn_comment,
 136 } model_table_fields;
 137
 138 typedef enum {
 139   include_flags = insn_flags,
 140   include_path = insn_name,
 141 } model_include_fields;
 142
 143 typedef enum {
 144   cache_type_def = insn_name,
 145   cache_derived_name = insn_comment,
 146   cache_name = insn_field_6,
 147   cache_expression = insn_field_7,
 148 } cache_fields;
 149
 150 typedef struct _insn insn;
 151 struct _insn {
 152   table_entry *file_entry;
 153   insn_fields *fields;
 154   insn *next;
 155 };
 156
 157 typedef struct _insn_undef insn_undef;
 158 struct _insn_undef {
 159   insn_undef *next;
 160   char *name;
 161 };
 162
 163 typedef struct _model model;
 164 struct _model {
 165   model *next;
 166   char *name;
 167   char *printable_name;
 168   char *insn_default;
 169   table_model_entry *func_unit_start;
 170   table_model_entry *func_unit_end;
 171 };
 172
 173 typedef struct _insn_table insn_table;
 174 struct _insn_table {
 175   int opcode_nr;
 176   insn_bits *expanded_bits;
 177   int nr_insn;
 178   insn *insns;
 179   insn *functions;
 180   insn *last_function;
 181   decode_table *opcode_rule;
 182   opcode_field *opcode;
 183   int nr_entries;
 184   insn_table *entries;
 185   insn_table *sibling;
 186   insn_table *parent;
 187 };
 188
 189 typedef enum {
 190   insn_model_name,
 191   insn_model_fields,
 192   nr_insn_model_table_fields
 193 } insn_model_table_fields;
 194
 195
 196 extern insn_table *load_insn_table
 197 (const char *file_name,
 198  decode_table *decode_rules,
 199  filter *filters,
 200  table_include *includes,
 201  cache_table **cache_rules);
 202
 203 extern model *models;
 204
 205 extern insn *model_macros;
 206 extern insn *model_functions;
 207 extern insn *model_internal;
 208 extern insn *model_static;
 209 extern insn *model_data;
 210
 211 extern int max_model_fields_len;
 212
 213 extern void insn_table_insert_insn
 214 (insn_table *table,
 215  table_entry *file_entry,
 216  insn_fields *fields);
 217
 218
 219 /****************************************************************/
 220
 221 /****************************************************************/
 222
 223 typedef void leaf_handler
 224 (insn_table *entry,
 225  lf *file,
 226  void *data,
 227  int depth);
 228
 229 typedef void insn_handler
 230 (insn_table *table,
 231  lf *file,
 232  void *data,
 233  insn *instruction,
 234  int depth);
 235
 236 typedef void padding_handler
 237 (insn_table *table,
 238  lf *file,
 239  void *data,
 240  int depth,
 241  int opcode_nr);
 242
 243
 244 extern void insn_table_traverse_tree
 245 (insn_table *table,
 246  lf *file,
 247  void *data,
 248  int depth,
 249  leaf_handler *start,
 250  insn_handler *handler,
 251  leaf_handler *end,
 252  padding_handler *padding);
 253
 254
 255 extern void insn_table_traverse_insn
 256 (insn_table *table,
 257  lf *file,
 258  void *data,
 259  insn_handler *handler);
 260
 261
 262
 263 /****************************************************************/
 264
 265 typedef void function_handler
 266 (insn_table *table,
 267  lf *file,
 268  void *data,
 269  table_entry *function);
 270
 271 extern void
 272 insn_table_traverse_function
 273 (insn_table *table,
 274  lf *file,
 275  void *data,
 276  function_handler *leaf);
 277
 278 /****************************************************************/
 279
 280
 281
 282 extern void insn_table_expand_insns
 283 (insn_table *table);
 284
 285 extern int insn_table_depth
 286 (insn_table *table);