nsz Git - libfirm/blob - ir/ir/irio.c

   1 /*
   2  * Copyright (C) 1995-2009 University of Karlsruhe.  All right reserved.
   3  *
   4  * This file is part of libFirm.
   5  *
   6  * This file may be distributed and/or modified under the terms of the
   7  * GNU General Public License version 2 as published by the Free Software
   8  * Foundation and appearing in the file LICENSE.GPL included in the
   9  * packaging of this file.
  10  *
  11  * Licensees holding valid libFirm Professional Edition licenses may use
  12  * this file in accordance with the libFirm Commercial License.
  13  * Agreement provided with the Software.
  14  *
  15  * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  16  * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17  * PURPOSE.
  18  */
  19
  20 /**
  21  * @file
  22  * @brief   Write textual representation of firm to file.
  23  * @author  Moritz Kroll
  24  * @version $Id$
  25  */
  26 #include "config.h"
  27
  28 #include <string.h>
  29 #include <ctype.h>
  30 #include <stdbool.h>
  31 #include <stdarg.h>
  32
  33 #include "irio.h"
  34
  35 #include "irnode_t.h"
  36 #include "irprog.h"
  37 #include "irgraph_t.h"
  38 #include "ircons.h"
  39 #include "irgmod.h"
  40 #include "irflag_t.h"
  41 #include "irgwalk.h"
  42 #include "tv.h"
  43 #include "array.h"
  44 #include "error.h"
  45 #include "typerep.h"
  46 #include "adt/set.h"
  47 #include "adt/obst.h"
  48
  49 #define SYMERROR ((unsigned) ~0)
  50
  51 typedef struct io_env_t
  52 {
  53         int c;                /**< currently read char */
  54         FILE *file;
  55         set *idset;           /**< id_entry set, which maps from file ids to new Firm elements */
  56         int ignoreblocks;
  57         const char *inputname;
  58         int line;
  59         ir_type **fixedtypes;
  60         struct obstack obst;
  61         ir_graph *irg;
  62 } io_env_t;
  63
  64 typedef enum typetag_t
  65 {
  66         tt_align,
  67         tt_allocation,
  68         tt_builtin,
  69         tt_cond_jmp_predicate,
  70         tt_initializer,
  71         tt_iro,
  72         tt_keyword,
  73         tt_mode_sort,
  74         tt_mode_arithmetic,
  75         tt_pin_state,
  76         tt_tpo,
  77         tt_type_state,
  78         tt_volatility,
  79         tt_linkage,
  80         tt_segment,
  81         tt_visibility
  82 } typetag_t;
  83
  84 typedef enum keyword_t
  85 {
  86         kw_constirg,
  87         kw_entity,
  88         kw_irg,
  89         kw_mode,
  90         kw_modes,
  91         kw_type,
  92         kw_typegraph,
  93         kw_program,
  94         kw_segment_type
  95 } keyword_t;
  96
  97 typedef struct symbol_t
  98 {
  99         const char *str;      /**< The name of this symbol. */
 100         typetag_t   typetag;  /**< The type tag of this symbol. */
 101         unsigned    code;     /**< The value of this symbol. */
 102 } symbol_t;
 103
 104 typedef struct id_entry
 105 {
 106         long id;
 107         void *elem;
 108 } id_entry;
 109
 110 /** The symbol table, a set of symbol_t elements. */
 111 static set *symtbl;
 112
 113 /**
 114  * Compare two symbol table entries.
 115  */
 116 static int symbol_cmp(const void *elt, const void *key, size_t size)
 117 {
 118         int res;
 119         const symbol_t *entry = (const symbol_t *) elt;
 120         const symbol_t *keyentry = (const symbol_t *) key;
 121         (void) size;
 122         res = entry->typetag - keyentry->typetag;
 123         if (res) return res;
 124         return strcmp(entry->str, keyentry->str);
 125 }
 126
 127 static int id_cmp(const void *elt, const void *key, size_t size)
 128 {
 129         const id_entry *entry = (const id_entry *) elt;
 130         const id_entry *keyentry = (const id_entry *) key;
 131         (void) size;
 132         return entry->id - keyentry->id;
 133 }
 134
 135 static void __attribute__((format(printf, 2, 3)))
 136 parse_error(io_env_t *env, const char *fmt, ...)
 137 {
 138         va_list ap;
 139         int     line = env->line;
 140
 141         /* workaround read_c "feature" that a '\n' triggers the line++
 142          * instead of the character after the '\n' */
 143         if (env->c == '\n') {
 144                 line--;
 145         }
 146
 147         fprintf(stderr, "%s:%d: error ", env->inputname, line);
 148
 149         va_start(ap, fmt);
 150         vfprintf(stderr, fmt, ap);
 151         va_end(ap);
 152 }
 153
 154 /** Initializes the symbol table. May be called more than once without problems. */
 155 static void symtbl_init(void)
 156 {
 157         symbol_t key;
 158
 159         /* Only initialize once */
 160         if (symtbl != NULL)
 161                 return;
 162
 163         symtbl = new_set(symbol_cmp, 256);
 164
 165 #define INSERT(tt, s, cod)                                       \
 166         key.str = (s);                                               \
 167         key.typetag = (tt);                                          \
 168         key.code = (cod);                                            \
 169         set_insert(symtbl, &key, sizeof(key), firm_fnv_hash_str(s) + tt * 17)
 170
 171 #define INSERTENUM(tt, e) INSERT(tt, #e, e)
 172 #define INSERTKEYWORD(k) INSERT(tt_keyword, #k, kw_##k)
 173
 174         INSERT(tt_tpo, "array", tpo_array);
 175         INSERT(tt_tpo, "class", tpo_class);
 176         INSERT(tt_tpo, "method", tpo_method);
 177         INSERT(tt_tpo, "pointer", tpo_pointer);
 178         INSERT(tt_tpo, "primitive", tpo_primitive);
 179         INSERT(tt_tpo, "struct", tpo_struct);
 180         INSERT(tt_tpo, "union", tpo_union);
 181         INSERT(tt_tpo, "Unknown", tpo_unknown);
 182
 183         INSERT(tt_mode_sort, "auxiliary", irms_auxiliary);
 184         INSERT(tt_mode_sort, "control_flow", irms_control_flow);
 185         INSERT(tt_mode_sort, "memory", irms_memory);
 186         INSERT(tt_mode_sort, "internal_boolean", irms_internal_boolean);
 187         INSERT(tt_mode_sort, "reference", irms_reference);
 188         INSERT(tt_mode_sort, "int_number", irms_int_number);
 189         INSERT(tt_mode_sort, "float_number", irms_float_number);
 190
 191         INSERT(tt_segment, "global", IR_SEGMENT_GLOBAL);
 192         INSERT(tt_segment, "thread_local", IR_SEGMENT_THREAD_LOCAL);
 193         INSERT(tt_segment, "constructors", IR_SEGMENT_CONSTRUCTORS);
 194         INSERT(tt_segment, "destructors", IR_SEGMENT_DESTRUCTORS);
 195
 196         INSERT(tt_linkage, "constant", IR_LINKAGE_CONSTANT);
 197         INSERT(tt_linkage, "weak", IR_LINKAGE_WEAK);
 198         INSERT(tt_linkage, "garbage_collect", IR_LINKAGE_GARBAGE_COLLECT);
 199         INSERT(tt_linkage, "merge", IR_LINKAGE_MERGE);
 200         INSERT(tt_linkage, "hidden_user", IR_LINKAGE_HIDDEN_USER);
 201
 202         INSERT(tt_visibility, "local", ir_visibility_local);
 203         INSERT(tt_visibility, "external", ir_visibility_external);
 204         INSERT(tt_visibility, "default", ir_visibility_default);
 205         INSERT(tt_visibility, "private", ir_visibility_private);
 206
 207         INSERTKEYWORD(constirg);
 208         INSERTKEYWORD(entity);
 209         INSERTKEYWORD(irg);
 210         INSERTKEYWORD(mode);
 211         INSERTKEYWORD(modes);
 212         INSERTKEYWORD(type);
 213         INSERTKEYWORD(typegraph);
 214         INSERTKEYWORD(program);
 215         INSERTKEYWORD(segment_type);
 216
 217 #include "gen_irio_lex.inl"
 218
 219         INSERTENUM(tt_align, align_non_aligned);
 220         INSERTENUM(tt_align, align_is_aligned);
 221
 222         INSERTENUM(tt_builtin, ir_bk_trap);
 223         INSERTENUM(tt_builtin, ir_bk_debugbreak);
 224         INSERTENUM(tt_builtin, ir_bk_return_address);
 225         INSERTENUM(tt_builtin, ir_bk_frame_address);
 226         INSERTENUM(tt_builtin, ir_bk_prefetch);
 227         INSERTENUM(tt_builtin, ir_bk_ffs);
 228         INSERTENUM(tt_builtin, ir_bk_clz);
 229         INSERTENUM(tt_builtin, ir_bk_ctz);
 230         INSERTENUM(tt_builtin, ir_bk_popcount);
 231         INSERTENUM(tt_builtin, ir_bk_parity);
 232         INSERTENUM(tt_builtin, ir_bk_bswap);
 233         INSERTENUM(tt_builtin, ir_bk_inport);
 234         INSERTENUM(tt_builtin, ir_bk_outport);
 235         INSERTENUM(tt_builtin, ir_bk_inner_trampoline);
 236
 237         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_NONE);
 238         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_TRUE);
 239         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_FALSE);
 240
 241         INSERTENUM(tt_initializer, IR_INITIALIZER_CONST);
 242         INSERTENUM(tt_initializer, IR_INITIALIZER_TARVAL);
 243         INSERTENUM(tt_initializer, IR_INITIALIZER_NULL);
 244         INSERTENUM(tt_initializer, IR_INITIALIZER_COMPOUND);
 245
 246         INSERTENUM(tt_mode_arithmetic, irma_uninitialized);
 247         INSERTENUM(tt_mode_arithmetic, irma_none);
 248         INSERTENUM(tt_mode_arithmetic, irma_twos_complement);
 249         INSERTENUM(tt_mode_arithmetic, irma_ones_complement);
 250         INSERTENUM(tt_mode_arithmetic, irma_int_BCD);
 251         INSERTENUM(tt_mode_arithmetic, irma_ieee754);
 252         INSERTENUM(tt_mode_arithmetic, irma_float_BCD);
 253
 254         INSERTENUM(tt_pin_state, op_pin_state_floats);
 255         INSERTENUM(tt_pin_state, op_pin_state_pinned);
 256         INSERTENUM(tt_pin_state, op_pin_state_exc_pinned);
 257         INSERTENUM(tt_pin_state, op_pin_state_mem_pinned);
 258
 259         INSERTENUM(tt_type_state, layout_undefined);
 260         INSERTENUM(tt_type_state, layout_fixed);
 261
 262         INSERTENUM(tt_volatility, volatility_non_volatile);
 263         INSERTENUM(tt_volatility, volatility_is_volatile);
 264
 265 #undef INSERTKEYWORD
 266 #undef INSERTENUM
 267 #undef INSERT
 268 }
 269
 270 static const char *get_segment_name(ir_segment_t segment)
 271 {
 272         switch (segment) {
 273         case IR_SEGMENT_GLOBAL:       return "global";
 274         case IR_SEGMENT_THREAD_LOCAL: return "thread_local";
 275         case IR_SEGMENT_CONSTRUCTORS: return "constructors";
 276         case IR_SEGMENT_DESTRUCTORS:  return "destructors";
 277         }
 278         return "INVALID_SEGMENT";
 279 }
 280
 281 static const char *get_visibility_name(ir_visibility visibility)
 282 {
 283         switch (visibility) {
 284         case ir_visibility_local:    return "local";
 285         case ir_visibility_external: return "external";
 286         case ir_visibility_default:  return "default";
 287         case ir_visibility_private:  return "private";
 288         }
 289         return "INVALID_VISIBILITY";
 290 }
 291
 292 /** Returns the according symbol value for the given string and tag, or SYMERROR if none was found. */
 293 static unsigned symbol(const char *str, typetag_t typetag)
 294 {
 295         symbol_t key, *entry;
 296
 297         key.str = str;
 298         key.typetag = typetag;
 299
 300         entry = (symbol_t*)set_find(symtbl, &key, sizeof(key), firm_fnv_hash_str(str) + typetag * 17);
 301         return entry ? entry->code : SYMERROR;
 302 }
 303
 304 static void *get_id(io_env_t *env, long id)
 305 {
 306         id_entry key, *entry;
 307         key.id = id;
 308
 309         entry = (id_entry*)set_find(env->idset, &key, sizeof(key), (unsigned) id);
 310         return entry ? entry->elem : NULL;
 311 }
 312
 313 static void set_id(io_env_t *env, long id, void *elem)
 314 {
 315         id_entry key;
 316         key.id = id;
 317         key.elem = elem;
 318         set_insert(env->idset, &key, sizeof(key), (unsigned) id);
 319 }
 320
 321 static void write_long(io_env_t *env, long value)
 322 {
 323         fprintf(env->file, "%ld ", value);
 324 }
 325
 326 static void write_int(io_env_t *env, int value)
 327 {
 328         fprintf(env->file, "%d ", value);
 329 }
 330
 331 static void write_unsigned(io_env_t *env, unsigned value)
 332 {
 333         fprintf(env->file, "%u ", value);
 334 }
 335
 336 static void write_entity_ref(io_env_t *env, ir_entity *entity)
 337 {
 338         write_long(env, get_entity_nr(entity));
 339 }
 340
 341 static void write_type_ref(io_env_t *env, ir_type *type)
 342 {
 343         write_long(env, get_type_nr(type));
 344 }
 345
 346 static void write_string(io_env_t *env, const char *string)
 347 {
 348         const char *c;
 349         fputc('"', env->file);
 350         for (c = string; *c != '\0'; ++c) {
 351                 switch (*c) {
 352                 case '\n':
 353                         fputc('\\', env->file);
 354                         fputc('n', env->file);
 355                         break;
 356                 case '"':
 357                 case '\\':
 358                         fputc('\\', env->file);
 359                         /* FALLTHROUGH */
 360                 default:
 361                         fputc(*c, env->file);
 362                         break;
 363                 }
 364         }
 365         fputc('"', env->file);
 366 }
 367
 368 static void write_ident(io_env_t *env, ident *id)
 369 {
 370         write_string(env, get_id_str(id));
 371         fputc(' ', env->file);
 372 }
 373
 374 static void write_ident_null(io_env_t *env, ident *id)
 375 {
 376         if (id == NULL) {
 377                 fputs("NULL ", env->file);
 378         } else {
 379                 write_ident(env, id);
 380         }
 381 }
 382
 383 static void write_mode(io_env_t *env, ir_mode *mode)
 384 {
 385         fputs(get_mode_name(mode), env->file);
 386         fputc(' ', env->file);
 387 }
 388
 389 static void write_tarval(io_env_t *env, ir_tarval *tv)
 390 {
 391         char buf[1024];
 392         write_mode(env, get_tarval_mode(tv));
 393         tarval_snprintf(buf, sizeof(buf), tv);
 394         fputs(buf, env->file);
 395         fputc(' ', env->file);
 396 }
 397
 398 static void write_align(io_env_t *env, ir_node *irn)
 399 {
 400         ir_align align;
 401
 402         if (is_Load(irn))
 403                 align = get_Load_align(irn);
 404         else if (is_Store(irn))
 405                 align = get_Store_align(irn);
 406         else
 407                 panic("Invalid optype for write_align");
 408
 409         fputs(get_align_name(align), env->file);
 410         fputc(' ', env->file);
 411 }
 412
 413 static void write_builtin_kind(io_env_t *env, ir_node *irn)
 414 {
 415         fputs(get_builtin_kind_name(get_Builtin_kind(irn)), env->file);
 416         fputc(' ', env->file);
 417 }
 418
 419 static void write_cond_jmp_predicate(io_env_t *env, ir_node *irn)
 420 {
 421         fputs(get_cond_jmp_predicate_name(get_Cond_jmp_pred(irn)), env->file);
 422         fputc(' ', env->file);
 423 }
 424
 425 static void write_list_begin(io_env_t *env)
 426 {
 427         fputs("[", env->file);
 428 }
 429
 430 static void write_list_end(io_env_t *env)
 431 {
 432         fputs("] ", env->file);
 433 }
 434
 435 static void write_initializer(io_env_t *env, ir_initializer_t *ini)
 436 {
 437         FILE *f = env->file;
 438         ir_initializer_kind_t ini_kind = get_initializer_kind(ini);
 439
 440         fputs(get_initializer_kind_name(ini_kind), f);
 441         fputc(' ', f);
 442
 443         switch (ini_kind) {
 444         case IR_INITIALIZER_CONST:
 445                 write_long(env, get_irn_node_nr(get_initializer_const_value(ini)));
 446                 break;
 447
 448         case IR_INITIALIZER_TARVAL:
 449                 write_tarval(env, get_initializer_tarval_value(ini));
 450                 break;
 451
 452         case IR_INITIALIZER_NULL:
 453                 break;
 454
 455         case IR_INITIALIZER_COMPOUND: {
 456                 unsigned i, n = get_initializer_compound_n_entries(ini);
 457                 fprintf(f, "%u ", n);
 458                 for (i = 0; i < n; i++)
 459                         write_initializer(env, get_initializer_compound_value(ini, i));
 460                 break;
 461         }
 462
 463         default:
 464                 panic("Unknown initializer kind");
 465         }
 466 }
 467
 468 static void write_pin_state(io_env_t *env, ir_node *irn)
 469 {
 470         fputs(get_op_pin_state_name(get_irn_pinned(irn)), env->file);
 471         fputc(' ', env->file);
 472 }
 473
 474 static void write_volatility(io_env_t *env, ir_node *irn)
 475 {
 476         ir_volatility vol;
 477
 478         if (is_Load(irn))
 479                 vol = get_Load_volatility(irn);
 480         else if (is_Store(irn))
 481                 vol = get_Store_volatility(irn);
 482         else
 483                 panic("Invalid optype for write_volatility");
 484
 485         fputs(get_volatility_name(vol), env->file);
 486         fputc(' ', env->file);
 487 }
 488
 489 static void export_type_common(io_env_t *env, ir_type *tp)
 490 {
 491         fprintf(env->file, "\ttype %ld %s %u %u %s %u ",
 492                 get_type_nr(tp),
 493                 get_type_tpop_name(tp),
 494                 get_type_size_bytes(tp),
 495                 get_type_alignment_bytes(tp),
 496                 get_type_state_name(get_type_state(tp)),
 497                 tp->flags);
 498 }
 499
 500 static void export_type_pre(io_env_t *env, ir_type *tp)
 501 {
 502         FILE *f = env->file;
 503
 504         /* skip types to be handled by post walker */
 505         switch (get_type_tpop_code(tp)) {
 506         case tpo_array:
 507         case tpo_method:
 508         case tpo_pointer:
 509                 return;
 510         default:
 511                 break;
 512         }
 513
 514         export_type_common(env, tp);
 515
 516         switch (get_type_tpop_code(tp)) {
 517         case tpo_uninitialized:
 518                 panic("invalid type found");
 519
 520         case tpo_class:
 521                 write_ident_null(env, get_compound_ident(tp));
 522                 break;
 523
 524         case tpo_primitive:
 525                 write_mode(env, get_type_mode(tp));
 526                 break;
 527
 528         case tpo_union:
 529         case tpo_struct:
 530         case tpo_enumeration:
 531                 write_ident_null(env, get_compound_ident(tp));
 532                 break;
 533
 534         case tpo_array:
 535         case tpo_method:
 536         case tpo_pointer:
 537         case tpo_code:
 538         case tpo_none:
 539         case tpo_unknown:
 540                 break;
 541         }
 542         fputc('\n', f);
 543 }
 544
 545 static void export_type_post(io_env_t *env, ir_type *tp)
 546 {
 547         FILE *f = env->file;
 548         int i;
 549
 550         /* skip types already handled by pre walker */
 551         switch (get_type_tpop_code(tp)) {
 552         case tpo_class:
 553         case tpo_primitive:
 554         case tpo_struct:
 555         case tpo_union:
 556         case tpo_unknown:
 557         case tpo_uninitialized:
 558         case tpo_code:
 559         case tpo_none:
 560                 return;
 561         case tpo_array:
 562         case tpo_method:
 563         case tpo_pointer:
 564         case tpo_enumeration:
 565                 break;
 566         }
 567
 568         export_type_common(env, tp);
 569
 570         switch (get_type_tpop_code(tp)) {
 571         case tpo_array: {
 572                 int n = get_array_n_dimensions(tp);
 573                 fprintf(f, "%d %ld ", n, get_type_nr(get_array_element_type(tp)));
 574                 for (i = 0; i < n; i++) {
 575                         ir_node *lower = get_array_lower_bound(tp, i);
 576                         ir_node *upper = get_array_upper_bound(tp, i);
 577
 578                         if (is_Const(lower))
 579                                 write_long(env, get_tarval_long(get_Const_tarval(lower)));
 580                         else
 581                                 panic("Lower array bound is not constant");
 582
 583                         if (is_Const(upper))
 584                                 write_long(env, get_tarval_long(get_Const_tarval(upper)));
 585                         else if (is_Unknown(upper))
 586                                 fputs("unknown ", f);
 587                         else
 588                                 panic("Upper array bound is not constant");
 589                 }
 590                 break;
 591         }
 592
 593         case tpo_method: {
 594                 int nparams  = get_method_n_params(tp);
 595                 int nresults = get_method_n_ress(tp);
 596                 fprintf(f, "%u %u %d %d ", get_method_calling_convention(tp),
 597                         get_method_additional_properties(tp), nparams, nresults);
 598                 for (i = 0; i < nparams; i++)
 599                         write_long(env, get_type_nr(get_method_param_type(tp, i)));
 600                 for (i = 0; i < nresults; i++)
 601                         write_long(env, get_type_nr(get_method_res_type(tp, i)));
 602                 fprintf(f, "%d ", get_method_first_variadic_param_index(tp));
 603                 break;
 604         }
 605
 606         case tpo_pointer:
 607                 write_mode(env, get_type_mode(tp));
 608                 write_long(env, get_type_nr(get_pointer_points_to_type(tp)));
 609                 break;
 610
 611         case tpo_enumeration:
 612                 fprintf(stderr, "Enumeration type not handled yet by exporter\n");
 613                 break;
 614
 615         default:
 616                 printf("export_type: Unknown type code \"%s\".\n",
 617                        get_type_tpop_name(tp));
 618                 break;
 619         }
 620         fputc('\n', f);
 621 }
 622
 623 static void export_entity(io_env_t *env, ir_entity *ent)
 624 {
 625         FILE          *file       = env->file;
 626         ir_type       *owner      = get_entity_owner(ent);
 627         ir_visibility  visibility = get_entity_visibility(ent);
 628         ir_linkage     linkage    = get_entity_linkage(ent);
 629
 630         /* we don't dump array_element_ent entities. They're a strange concept
 631          * and lead to cycles in type_graph.
 632          */
 633         if (is_Array_type(owner))
 634                 return;
 635
 636         fprintf(env->file, "\tentity ");
 637         write_long(env, get_entity_nr(ent));
 638         write_ident_null(env, get_entity_ident(ent));
 639         if (!entity_has_ld_ident(ent)) {
 640                 write_ident_null(env, NULL);
 641         } else {
 642                 write_ident_null(env, get_entity_ld_ident(ent));
 643         }
 644
 645         /* visibility + linkage */
 646         if (visibility != ir_visibility_default) {
 647                 fprintf(file, "%s ", get_visibility_name(visibility));
 648         }
 649         if (linkage & IR_LINKAGE_CONSTANT)
 650                 fputs("constant ", file);
 651         if (linkage & IR_LINKAGE_WEAK)
 652                 fputs("weak ", file);
 653         if (linkage & IR_LINKAGE_GARBAGE_COLLECT)
 654                 fputs("garbage_collect ", file);
 655         if (linkage & IR_LINKAGE_MERGE)
 656                 fputs("merge ", file);
 657         if (linkage & IR_LINKAGE_HIDDEN_USER)
 658                 fputs("hidden_user ", file);
 659
 660         fprintf(file, "%ld %ld %d %u %d %s ",
 661                         get_type_nr(get_entity_type(ent)),
 662                         get_type_nr(owner),
 663                         get_entity_offset(ent),
 664                         (unsigned) get_entity_offset_bits_remainder(ent),
 665                         is_entity_compiler_generated(ent),
 666                         get_volatility_name(get_entity_volatility(ent)));
 667
 668         if (ent->initializer != NULL) {
 669                 fputs("initializer ", env->file);
 670                 write_initializer(env, get_entity_initializer(ent));
 671         } else if (entity_has_compound_ent_values(ent)) {
 672                 int i, n = get_compound_ent_n_values(ent);
 673                 fputs("compoundgraph ", env->file);
 674                 fprintf(env->file, "%d ", n);
 675                 for (i = 0; i < n; i++) {
 676                         ir_entity *member = get_compound_ent_value_member(ent, i);
 677                         ir_node   *irn    = get_compound_ent_value(ent, i);
 678                         fprintf(env->file, "%ld %ld ", get_entity_nr(member), get_irn_node_nr(irn));
 679                 }
 680         } else {
 681                 fputs("none", env->file);
 682         }
 683
 684         fputc('\n', env->file);
 685 }
 686
 687 static void export_type_or_ent_pre(type_or_ent tore, void *ctx)
 688 {
 689         io_env_t *env = (io_env_t *) ctx;
 690         if (get_kind(tore.typ) == k_type)
 691                 export_type_pre(env, tore.typ);
 692 }
 693
 694 static void export_type_or_ent_post(type_or_ent tore, void *ctx)
 695 {
 696         io_env_t *env = (io_env_t *) ctx;
 697
 698         switch (get_kind(tore.ent)) {
 699         case k_entity:
 700                 export_entity(env, tore.ent);
 701                 break;
 702
 703         case k_type:
 704                 export_type_post(env, tore.typ);
 705                 break;
 706
 707         default:
 708                 panic("export_type_or_ent_post: Unknown type or entity.");
 709                 break;
 710         }
 711 }
 712
 713 static void export_ASM(io_env_t *env, ir_node *node)
 714 {
 715         ir_asm_constraint *input_constraints    = get_ASM_input_constraints(node);
 716         ir_asm_constraint *output_constraints   = get_ASM_output_constraints(node);
 717         ident            **clobbers             = get_ASM_clobbers(node);
 718         int                n_input_constraints  = get_ASM_n_input_constraints(node);
 719         int                n_output_constraints = get_ASM_n_output_constraints(node);
 720         int                n_clobbers           = get_ASM_n_clobbers(node);
 721         int i;
 722
 723         write_ident(env, get_ASM_text(node));
 724         write_list_begin(env);
 725         for (i = 0; i < n_input_constraints; ++i) {
 726                 const ir_asm_constraint *constraint = &input_constraints[i];
 727                 write_unsigned(env, constraint->pos);
 728                 write_ident(env, constraint->constraint);
 729                 write_mode(env, constraint->mode);
 730         }
 731         write_list_end(env);
 732
 733         write_list_begin(env);
 734         for (i = 0; i < n_output_constraints; ++i) {
 735                 const ir_asm_constraint *constraint = &output_constraints[i];
 736                 write_unsigned(env, constraint->pos);
 737                 write_ident(env, constraint->constraint);
 738                 write_mode(env, constraint->mode);
 739         }
 740         write_list_end(env);
 741
 742         write_list_begin(env);
 743         for (i = 0; i < n_clobbers; ++i) {
 744                 ident *clobber = clobbers[i];
 745                 write_ident(env, clobber);
 746         }
 747         write_list_end(env);
 748 }
 749
 750 /**
 751  * Walker: exports every node.
 752  */
 753 static void export_node(ir_node *irn, void *ctx)
 754 {
 755         io_env_t *env = (io_env_t *) ctx;
 756         int i, n;
 757         unsigned opcode = get_irn_opcode(irn);
 758
 759         if (env->ignoreblocks && opcode == iro_Block)
 760                 return;
 761
 762         fprintf(env->file, "\t%s ", get_irn_opname(irn));
 763         write_long(env, get_irn_node_nr(irn));
 764
 765         write_list_begin(env);
 766         n = get_irn_arity(irn);
 767         if (!is_Block(irn)) {
 768                 ir_node *block = get_nodes_block(irn);
 769                 write_long(env, get_irn_node_nr(block));
 770         }
 771
 772         for (i = 0; i < n; i++) {
 773                 ir_node *pred = get_irn_n(irn, i);
 774                 if (pred == NULL) {
 775                         /* Anchor node may have NULL predecessors */
 776                         assert(is_Anchor(irn));
 777                         fputs("-1 ", env->file);
 778                 } else {
 779                         write_long(env, get_irn_node_nr(pred));
 780                 }
 781         }
 782         write_list_end(env);
 783
 784         fputs("{ ", env->file);
 785
 786         switch (opcode) {
 787         case iro_Start:
 788         case iro_End:
 789         case iro_Block:
 790         case iro_Anchor:
 791                 break;
 792         case iro_SymConst:
 793                 /* TODO: only symconst_addr_ent implemented yet */
 794                 assert(get_SymConst_kind(irn) == symconst_addr_ent);
 795                 fprintf(env->file, "%ld ", get_entity_nr(get_SymConst_entity(irn)));
 796                 break;
 797         case iro_Proj:
 798                 write_mode(env, get_irn_mode(irn));
 799                 fprintf(env->file, "%ld ", get_Proj_proj(irn));
 800                 break;
 801         case iro_ASM:
 802                 export_ASM(env, irn);
 803                 break;
 804 #include "gen_irio_export.inl"
 805         default:
 806                 panic("no export code for node %+F\n", irn);
 807         }
 808         fputs("}\n", env->file);
 809 }
 810
 811 static const char *get_mode_sort_name(ir_mode_sort sort)
 812 {
 813         switch (sort) {
 814         case irms_auxiliary:        return "auxiliary";
 815         case irms_control_flow:     return "control_flow";
 816         case irms_memory:           return "memory";
 817         case irms_internal_boolean: return "internal_boolean";
 818         case irms_reference:        return "reference";
 819         case irms_int_number:       return "int_number";
 820         case irms_float_number:     return "float_number";
 821         }
 822         panic("invalid mode sort found");
 823 }
 824
 825 static void export_modes(io_env_t *env)
 826 {
 827         int i, n_modes = get_irp_n_modes();
 828
 829         fputs("modes {\n", env->file);
 830
 831         for (i = 0; i < n_modes; i++) {
 832                 ir_mode *mode = get_irp_mode(i);
 833                 switch (get_mode_sort(mode)) {
 834                 case irms_auxiliary:
 835                 case irms_control_flow:
 836                 case irms_memory:
 837                 case irms_internal_boolean:
 838                         /* skip "internal" modes, which may not be user defined */
 839                         continue;
 840                 default:
 841                         break;
 842                 }
 843
 844                 fprintf(env->file, "\tmode ");
 845                 write_string(env, get_mode_name(mode));
 846                 fprintf(env->file, "%s %u %d %s %u %u ",
 847                         get_mode_sort_name(get_mode_sort(mode)),
 848                         get_mode_size_bits(mode), get_mode_sign(mode),
 849                         get_mode_arithmetic_name(get_mode_arithmetic(mode)),
 850                         get_mode_modulo_shift(mode),
 851                         get_mode_n_vector_elems(mode));
 852                 if (mode_is_reference(mode)) {
 853                         write_mode(env, get_reference_mode_signed_eq(mode));
 854                         write_mode(env, get_reference_mode_unsigned_eq(mode));
 855                 }
 856                 fputc('\n', env->file);
 857         }
 858
 859         fputs("}\n", env->file);
 860 }
 861
 862 static void export_program(io_env_t *env)
 863 {
 864         FILE         *f = env->file;
 865         ir_segment_t  s;
 866
 867         fputs("\nprogram {\n", f);
 868         if (irp_prog_name_is_set()) {
 869                 fprintf(f, "\tname ");
 870                 write_string(env, get_irp_name());
 871                 fputc('\n', f);
 872         }
 873
 874         for (s = IR_SEGMENT_FIRST; s <= IR_SEGMENT_LAST; ++s) {
 875                 ir_type *segment_type = get_segment_type(s);
 876                 fprintf(f, "\tsegment_type %s ", get_segment_name(s));
 877                 if (segment_type == NULL) {
 878                         fputs(" NULL\n", f);
 879                 } else {
 880                         write_long(env, get_type_nr(segment_type));
 881                         fputc('\n', f);
 882                 }
 883         }
 884         fputs("}\n", f);
 885 }
 886
 887 void ir_export(const char *filename)
 888 {
 889         FILE *file = fopen(filename, "wt");
 890         if (file == NULL) {
 891                 perror(filename);
 892                 return;
 893         }
 894
 895         ir_export_file(file, filename);
 896         fclose(file);
 897 }
 898
 899 /* Exports the whole irp to the given file in a textual form. */
 900 void ir_export_file(FILE *file, const char *outputname)
 901 {
 902         io_env_t env;
 903         int i, n_irgs = get_irp_n_irgs();
 904
 905         (void) outputname;
 906         env.file = file;
 907
 908         export_modes(&env);
 909
 910         fputs("\ntypegraph {\n", env.file);
 911         type_walk_prog(export_type_or_ent_pre, export_type_or_ent_post, &env);
 912         fputs("}\n", env.file);
 913
 914         for (i = 0; i < n_irgs; i++) {
 915                 ir_graph *irg       = get_irp_irg(i);
 916                 ir_type  *valuetype = get_irg_value_param_type(irg);
 917
 918                 fprintf(env.file, "\nirg %ld %ld %ld {\n",
 919                         get_entity_nr(get_irg_entity(irg)),
 920                         get_type_nr(get_irg_frame_type(irg)),
 921                         valuetype == NULL ? -1 : get_type_nr(valuetype));
 922
 923                 env.ignoreblocks = 0;
 924                 irg_block_walk_graph(irg, NULL, export_node, &env);
 925
 926                 env.ignoreblocks = 1;
 927                 irg_walk_anchors(irg, NULL, export_node, &env);
 928
 929                 fputs("}\n", env.file);
 930         }
 931
 932         fprintf(env.file, "\nconstirg %ld {\n", get_irn_node_nr(get_const_code_irg()->current_block));
 933
 934         walk_const_code(NULL, export_node, &env);
 935         fputs("}\n", env.file);
 936
 937         export_program(&env);
 938 }
 939
 940 /* Exports the given irg to the given file. */
 941 void ir_export_irg(ir_graph *irg, FILE *file, const char *outputname)
 942 {
 943         io_env_t env;
 944
 945         (void) outputname;
 946         env.file = file;
 947
 948         export_modes(&env);
 949
 950         fputs("typegraph {\n", env.file);
 951
 952         type_walk_irg(irg, export_type_or_ent_pre, export_type_or_ent_post, &env);
 953
 954         fprintf(env.file, "}\n\nirg %ld {\n", get_entity_nr(get_irg_entity(irg)));
 955
 956         env.ignoreblocks = 0;
 957         irg_block_walk_graph(irg, NULL, export_node, &env);
 958
 959         env.ignoreblocks = 1;
 960         irg_walk_anchors(irg, NULL, export_node, &env);
 961
 962         /* TODO: Only output needed constants */
 963         fprintf(env.file, "}\n\nconstirg %ld {\n", get_irn_node_nr(get_const_code_irg()->current_block));
 964         walk_const_code(NULL, export_node, &env);
 965         fputs("}\n", env.file);
 966 }
 967
 968 static void read_c(io_env_t *env)
 969 {
 970         int c = fgetc(env->file);
 971         env->c = c;
 972         if (c == '\n')
 973                 env->line++;
 974 }
 975
 976 /** Returns the first non-whitespace character or EOF. **/
 977 static void skip_ws(io_env_t *env)
 978 {
 979         while (true) {
 980                 switch (env->c) {
 981                 case ' ':
 982                 case '\t':
 983                 case '\n':
 984                 case '\r':
 985                         read_c(env);
 986                         continue;
 987
 988                 default:
 989                         return;
 990                 }
 991         }
 992 }
 993
 994 static void skip_to(io_env_t *env, char to_ch)
 995 {
 996         while (env->c != to_ch && env->c != EOF) {
 997                 read_c(env);
 998         }
 999 }
1000
1001 static int expect_char(io_env_t *env, char ch)
1002 {
1003         skip_ws(env);
1004         if (env->c != ch) {
1005                 parse_error(env, "Unexpected char '%c', expected '%c'\n",
1006                             env->c, ch);
1007                 return 0;
1008         }
1009         read_c(env);
1010         return 1;
1011 }
1012
1013 #define EXPECT(c) if (expect_char(env, (c))) {} else return 0
1014
1015 static char *read_word(io_env_t *env)
1016 {
1017         skip_ws(env);
1018
1019         assert(obstack_object_size(&env->obst) == 0);
1020         while (true) {
1021                 int c = env->c;
1022                 switch (c) {
1023                 case EOF:
1024                 case ' ':
1025                 case '\t':
1026                 case '\n':
1027                 case '\r':
1028                         goto endofword;
1029
1030                 default:
1031                         obstack_1grow(&env->obst, c);
1032                         break;
1033                 }
1034                 read_c(env);
1035         }
1036
1037 endofword:
1038         obstack_1grow(&env->obst, '\0');
1039         return (char*)obstack_finish(&env->obst);
1040 }
1041
1042 static char *read_string(io_env_t *env)
1043 {
1044         skip_ws(env);
1045         if (env->c != '"') {
1046                 parse_error(env, "Expected string, got '%c'\n", env->c);
1047                 exit(1);
1048         }
1049         read_c(env);
1050
1051         assert(obstack_object_size(&env->obst) == 0);
1052         while (env->c != '"') {
1053                 if (env->c == EOF) {
1054                         parse_error(env, "Unexpected EOF while parsing string\n");
1055                         exit(1);
1056                 }
1057
1058                 if (env->c == '\\') {
1059                         read_c(env);
1060                         switch (env->c) {
1061                         case 'n':
1062                                 obstack_1grow(&env->obst, '\n');
1063                                 break;
1064                         case '"':
1065                         case '\\':
1066                                 obstack_1grow(&env->obst, env->c);
1067                                 break;
1068                         default:
1069                                 parse_error(env, "Unknown escape sequence '\\%c'\n", env->c);
1070                                 exit(1);
1071                                 break;
1072                         }
1073                 } else {
1074                         obstack_1grow(&env->obst, env->c);
1075                 }
1076                 read_c(env);
1077         }
1078         read_c(env);
1079         obstack_1grow(&env->obst, 0);
1080
1081         return (char*)obstack_finish(&env->obst);
1082 }
1083
1084 static ident *read_ident(io_env_t *env)
1085 {
1086         char  *str = read_string(env);
1087         ident *res = new_id_from_str(str);
1088         obstack_free(&env->obst, str);
1089         return res;
1090 }
1091
1092 /*
1093  * reads a "quoted string" or alternatively the token NULL
1094  */
1095 static char *read_string_null(io_env_t *env)
1096 {
1097         skip_ws(env);
1098         if (env->c == 'N') {
1099                 char *str = read_word(env);
1100                 if (strcmp(str, "NULL") == 0) {
1101                         obstack_free(&env->obst, str);
1102                         return NULL;
1103                 }
1104         } else if (env->c == '"') {
1105                 return read_string(env);
1106         }
1107
1108         parse_error(env, "Expected \"string\" or NULL\n");
1109         exit(1);
1110 }
1111
1112 static ident *read_ident_null(io_env_t *env)
1113 {
1114         ident *res;
1115         char  *str = read_string_null(env);
1116         if (str == NULL)
1117                 return NULL;
1118
1119         res = new_id_from_str(str);
1120         obstack_free(&env->obst, str);
1121         return res;
1122 }
1123
1124 static long read_long(io_env_t *env)
1125 {
1126         long  result;
1127         char *str;
1128
1129         skip_ws(env);
1130         if (!isdigit(env->c) && env->c != '-') {
1131                 parse_error(env, "Expected number, got '%c'\n", env->c);
1132                 exit(1);
1133         }
1134
1135         assert(obstack_object_size(&env->obst) == 0);
1136         do {
1137                 obstack_1grow(&env->obst, env->c);
1138                 read_c(env);
1139         } while (isdigit(env->c));
1140         obstack_1grow(&env->obst, 0);
1141
1142         str = (char*)obstack_finish(&env->obst);
1143         result = atol(str);
1144         obstack_free(&env->obst, str);
1145
1146         return result;
1147 }
1148
1149 static int read_int(io_env_t *env)
1150 {
1151         return (int) read_long(env);
1152 }
1153
1154 static unsigned read_unsigned(io_env_t *env)
1155 {
1156         return (unsigned) read_long(env);
1157 }
1158
1159 static void expect_list_begin(io_env_t *env)
1160 {
1161         skip_ws(env);
1162         if (env->c != '[') {
1163                 parse_error(env, "Expected list, got '%c'\n", env->c);
1164                 exit(1);
1165         }
1166         read_c(env);
1167 }
1168
1169 static bool list_has_next(io_env_t *env)
1170 {
1171         if (feof(env->file)) {
1172                 parse_error(env, "Unexpected EOF while reading list");
1173                 exit(1);
1174         }
1175         skip_ws(env);
1176         if (env->c == ']') {
1177                 read_c(env);
1178                 return false;
1179         }
1180
1181         return true;
1182 }
1183
1184 static ir_node *get_node_or_null(io_env_t *env, long nodenr)
1185 {
1186         ir_node *node = (ir_node *) get_id(env, nodenr);
1187         if (node && node->kind != k_ir_node) {
1188                 panic("Irn ID %ld collides with something else in line %d\n",
1189                       nodenr, env->line);
1190         }
1191         return node;
1192 }
1193
1194 static ir_node *get_node_or_dummy(io_env_t *env, long nodenr)
1195 {
1196         ir_node *node = get_node_or_null(env, nodenr);
1197         if (node == NULL) {
1198                 node = new_r_Dummy(env->irg, mode_X);
1199                 set_id(env, nodenr, node);
1200         }
1201         return node;
1202 }
1203
1204 static ir_type *get_type(io_env_t *env, long typenr)
1205 {
1206         ir_type *type = (ir_type *) get_id(env, typenr);
1207         if (type == NULL)
1208                 panic("unknown type: %ld in line %d\n", typenr, env->line);
1209         else if (type->kind != k_type)
1210                 panic("type ID %ld collides with something else in line %d\n",
1211                       typenr, env->line);
1212         return type;
1213 }
1214
1215 static ir_type *read_type(io_env_t *env)
1216 {
1217         return get_type(env, read_long(env));
1218 }
1219
1220 static ir_entity *get_entity(io_env_t *env, long entnr)
1221 {
1222         ir_entity *entity = (ir_entity *) get_id(env, entnr);
1223         if (entity == NULL) {
1224                 parse_error(env, "unknown entity: %ld\n", entnr);
1225                 exit(1);
1226         } else if (entity->kind != k_entity) {
1227                 panic("Entity ID %ld collides with something else in line %d\n",
1228                       entnr, env->line);
1229         }
1230
1231         return entity;
1232 }
1233
1234 static ir_entity *read_entity(io_env_t *env)
1235 {
1236         return get_entity(env, read_long(env));
1237 }
1238
1239 static ir_mode *read_mode(io_env_t *env)
1240 {
1241         char *str = read_word(env);
1242         int i, n;
1243
1244         n = get_irp_n_modes();
1245         for (i = 0; i < n; i++) {
1246                 ir_mode *mode = get_irp_mode(i);
1247                 if (strcmp(str, get_mode_name(mode)) == 0) {
1248                         obstack_free(&env->obst, str);
1249                         return mode;
1250                 }
1251         }
1252
1253         parse_error(env, "unknown mode \"%s\"\n", str);
1254         exit(1);
1255 }
1256
1257 static const char *get_typetag_name(typetag_t typetag)
1258 {
1259         switch (typetag) {
1260         case tt_align:              return "align";
1261         case tt_allocation:         return "allocation";
1262         case tt_builtin:            return "builtin kind";
1263         case tt_cond_jmp_predicate: return "cond_jmp_predicate";
1264         case tt_initializer:        return "initializer kind";
1265         case tt_iro:                return "opcode";
1266         case tt_keyword:            return "keyword";
1267         case tt_linkage:            return "linkage";
1268         case tt_mode_arithmetic:    return "mode_arithmetic";
1269         case tt_mode_sort:          return "mode_sort";
1270         case tt_pin_state:          return "pin state";
1271         case tt_segment:            return "segment";
1272         case tt_tpo:                return "type";
1273         case tt_type_state:         return "type state";
1274         case tt_volatility:         return "volatility";
1275         case tt_visibility:         return "visibility";
1276         }
1277         return "<UNKNOWN>";
1278 }
1279
1280 /**
1281  * Read and decode an enum constant.
1282  */
1283 static unsigned read_enum(io_env_t *env, typetag_t typetag)
1284 {
1285         char     *str  = read_word(env);
1286         unsigned  code = symbol(str, typetag);
1287
1288         if (code != SYMERROR) {
1289                 obstack_free(&env->obst, str);
1290                 return code;
1291         }
1292
1293         parse_error(env, "invalid %s: \"%s\"\n", get_typetag_name(typetag), str);
1294         return 0;
1295 }
1296
1297 #define read_align(env)              ((ir_align)              read_enum(env, tt_align))
1298 #define read_allocation(env)         ((ir_allocation)         read_enum(env, tt_allocation))
1299 #define read_builtin_kind(env)       ((ir_builtin_kind)       read_enum(env, tt_builtin))
1300 #define read_cond_jmp_predicate(env) ((cond_jmp_predicate)    read_enum(env, tt_cond_jmp_predicate))
1301 #define read_initializer_kind(env)   ((ir_initializer_kind_t) read_enum(env, tt_initializer))
1302 #define read_mode_arithmetic(env)    ((ir_mode_arithmetic)    read_enum(env, tt_mode_arithmetic))
1303 #define read_peculiarity(env)        ((ir_peculiarity)        read_enum(env, tt_peculiarity))
1304 #define read_pin_state(env)          ((op_pin_state)          read_enum(env, tt_pin_state))
1305 #define read_type_state(env)         ((ir_type_state)         read_enum(env, tt_type_state))
1306 #define read_variability(env)        ((ir_variability)        read_enum(env, tt_variability))
1307 #define read_volatility(env)         ((ir_volatility)         read_enum(env, tt_volatility))
1308
1309 static ir_cons_flags get_cons_flags(io_env_t *env)
1310 {
1311         ir_cons_flags flags = cons_none;
1312
1313         op_pin_state pinstate = read_pin_state(env);
1314         switch (pinstate) {
1315         case op_pin_state_floats: flags |= cons_floats; break;
1316         case op_pin_state_pinned: break;
1317         default:
1318                 panic("Error in %d: Invalid pinstate: %s", env->line,
1319                       get_op_pin_state_name(pinstate));
1320         }
1321
1322         if (read_volatility(env) == volatility_is_volatile)
1323                 flags |= cons_volatile;
1324         if (read_align(env) == align_non_aligned)
1325                 flags |= cons_unaligned;
1326
1327         return flags;
1328 }
1329
1330 static ir_tarval *read_tv(io_env_t *env)
1331 {
1332         ir_mode   *tvmode = read_mode(env);
1333         char      *str    = read_word(env);
1334         ir_tarval *tv     = new_tarval_from_str(str, strlen(str), tvmode);
1335         obstack_free(&env->obst, str);
1336
1337         return tv;
1338 }
1339
1340 static ir_initializer_t *read_initializer(io_env_t *env)
1341 {
1342         ir_initializer_kind_t ini_kind = read_initializer_kind(env);
1343
1344         switch (ini_kind) {
1345         case IR_INITIALIZER_CONST: {
1346                 ir_node *irn = get_node_or_dummy(env, read_long(env));
1347                 return create_initializer_const(irn);
1348         }
1349
1350         case IR_INITIALIZER_TARVAL:
1351                 return create_initializer_tarval(read_tv(env));
1352
1353         case IR_INITIALIZER_NULL:
1354                 return get_initializer_null();
1355
1356         case IR_INITIALIZER_COMPOUND: {
1357                 unsigned i, n = (unsigned) read_long(env);
1358                 ir_initializer_t *ini = create_initializer_compound(n);
1359                 for (i = 0; i < n; i++) {
1360                         ir_initializer_t *curini = read_initializer(env);
1361                         set_initializer_compound_value(ini, i, curini);
1362                 }
1363                 return ini;
1364         }
1365
1366         default:
1367                 panic("Unknown initializer kind");
1368         }
1369 }
1370
1371
1372 /** Reads a type description and remembers it by its id. */
1373 static void import_type(io_env_t *env)
1374 {
1375         int            i;
1376         ir_type       *type;
1377         long           typenr = read_long(env);
1378         tp_opcode      tpop   = (tp_opcode) read_enum(env, tt_tpo);
1379         unsigned       size   = (unsigned) read_long(env);
1380         unsigned       align  = (unsigned) read_long(env);
1381         ir_type_state  state  = read_type_state(env);
1382         unsigned       flags  = (unsigned) read_long(env);
1383
1384         switch (tpop) {
1385         case tpo_array: {
1386                 int ndims = (int) read_long(env);
1387                 long elemtypenr = read_long(env);
1388                 ir_type *elemtype = get_type(env, elemtypenr);
1389
1390                 type = new_type_array(ndims, elemtype);
1391                 for (i = 0; i < ndims; i++) {
1392                         char *str = read_word(env);
1393                         if (strcmp(str, "unknown") != 0) {
1394                                 long lowerbound = atol(str);
1395                                 set_array_lower_bound_int(type, i, lowerbound);
1396                         }
1397                         obstack_free(&env->obst, str);
1398
1399                         str = read_word(env);
1400                         if (strcmp(str, "unknown") != 0) {
1401                                 long upperbound = atol(str);
1402                                 set_array_upper_bound_int(type, i, upperbound);
1403                         }
1404                         obstack_free(&env->obst, str);
1405                 }
1406                 set_type_size_bytes(type, size);
1407                 break;
1408         }
1409
1410         case tpo_class: {
1411                 ident *id = read_ident_null(env);
1412
1413                 if (typenr == (long) IR_SEGMENT_GLOBAL)
1414                         type = get_glob_type();
1415                 else
1416                         type = new_type_class(id);
1417                 set_type_size_bytes(type, size);
1418                 break;
1419         }
1420
1421         case tpo_method: {
1422                 unsigned                  callingconv = (unsigned) read_long(env);
1423                 mtp_additional_properties addprops    = (mtp_additional_properties) read_long(env);
1424                 int nparams          = (int)      read_long(env);
1425                 int nresults         = (int)      read_long(env);
1426                 int variaindex;
1427
1428                 type = new_type_method(nparams, nresults);
1429
1430                 for (i = 0; i < nparams; i++) {
1431                         long     typenr = read_long(env);
1432                         ir_type *paramtype = get_type(env, typenr);
1433
1434                         set_method_param_type(type, i, paramtype);
1435                 }
1436                 for (i = 0; i < nresults; i++) {
1437                         long typenr = read_long(env);
1438                         ir_type *restype = get_type(env, typenr);
1439
1440                         set_method_res_type(type, i, restype);
1441                 }
1442
1443                 variaindex = (int) read_long(env);
1444                 if (variaindex != -1) {
1445                         set_method_variadicity(type, variadicity_variadic);
1446                         if (variaindex != nparams)
1447                                 set_method_first_variadic_param_index(type, variaindex);
1448                 }
1449
1450                 set_method_calling_convention(type, callingconv);
1451                 set_method_additional_properties(type, addprops);
1452                 break;
1453         }
1454
1455         case tpo_pointer: {
1456                 ir_mode *mode     = read_mode(env);
1457                 ir_type *pointsto = get_type(env, read_long(env));
1458                 type = new_type_pointer(pointsto);
1459                 set_type_mode(type, mode);
1460                 break;
1461         }
1462
1463         case tpo_primitive: {
1464                 ir_mode *mode = read_mode(env);
1465                 type = new_type_primitive(mode);
1466                 break;
1467         }
1468
1469         case tpo_struct: {
1470                 ident *id = read_ident_null(env);
1471                 type = new_type_struct(id);
1472                 set_type_size_bytes(type, size);
1473                 break;
1474         }
1475
1476         case tpo_union: {
1477                 ident *id = read_ident_null(env);
1478                 type = new_type_union(id);
1479                 set_type_size_bytes(type, size);
1480                 break;
1481         }
1482
1483         case tpo_unknown:
1484                 return;   /* ignore unknown type */
1485
1486         default:
1487                 parse_error(env, "unknown type kind: \"%d\"\n", tpop);
1488                 skip_to(env, '\n');
1489                 return;
1490         }
1491
1492         set_type_alignment_bytes(type, align);
1493         type->flags = flags;
1494
1495         if (state == layout_fixed)
1496                 ARR_APP1(ir_type *, env->fixedtypes, type);
1497
1498         set_id(env, typenr, type);
1499 }
1500
1501 /** Reads an entity description and remembers it by its id. */
1502 static void import_entity(io_env_t *env)
1503 {
1504         long           entnr      = read_long(env);
1505         ident         *name       = read_ident(env);
1506         ident         *ld_name    = read_ident_null(env);
1507         ir_visibility  visibility = ir_visibility_default;
1508         ir_linkage     linkage    = IR_LINKAGE_DEFAULT;
1509         long           typenr;
1510         long           ownertypenr;
1511         const char    *str;
1512         ir_type       *type;
1513         ir_type       *ownertype;
1514         ir_entity     *entity;
1515
1516         skip_ws(env);
1517         while (!isdigit(env->c)) {
1518                 char     *str = read_word(env);
1519                 unsigned  v;
1520
1521                 skip_ws(env);
1522
1523                 v = symbol(str, tt_visibility);
1524                 if (v != SYMERROR) {
1525                         visibility = (ir_visibility)v;
1526                         continue;
1527                 }
1528                 v = symbol(str, tt_linkage);
1529                 if (v != SYMERROR) {
1530                         linkage |= (ir_linkage)v;
1531                         continue;
1532                 }
1533                 printf("Parser error, expected visibility or linkage, got '%s'\n",
1534                        str);
1535                 break;
1536         }
1537
1538         typenr      = read_long(env);
1539         ownertypenr = read_long(env);
1540
1541         type      = get_type(env, typenr);
1542         ownertype = !ownertypenr ? get_glob_type() : get_type(env, ownertypenr);
1543         entity    = new_entity(ownertype, name, type);
1544
1545         if (ld_name != NULL)
1546                 set_entity_ld_ident(entity, ld_name);
1547         set_entity_offset(entity, (int) read_long(env));
1548         set_entity_offset_bits_remainder(entity, (unsigned char) read_long(env));
1549         set_entity_compiler_generated(entity, (int) read_long(env));
1550         set_entity_volatility(entity, read_volatility(env));
1551         set_entity_visibility(entity, visibility);
1552         set_entity_linkage(entity, linkage);
1553
1554         str = read_word(env);
1555         if (strcmp(str, "initializer") == 0) {
1556                 set_entity_initializer(entity, read_initializer(env));
1557         } else if (strcmp(str, "compoundgraph") == 0) {
1558                 int n = (int) read_long(env);
1559                 int i;
1560                 for (i = 0; i < n; i++) {
1561                         ir_entity *member = get_entity(env, read_long(env));
1562                         ir_node   *irn    = get_node_or_dummy(env, read_long(env));
1563                         add_compound_ent_value(entity, irn, member);
1564                 }
1565         } else if (strcmp(str, "none") == 0) {
1566                 /* do nothing */
1567         } else {
1568                 parse_error(env, "expected 'initializer', 'compoundgraph' or 'none' got '%s'\n", str);
1569                 exit(1);
1570         }
1571
1572         set_id(env, entnr, entity);
1573 }
1574
1575 /** Parses the whole type graph. */
1576 static int parse_typegraph(io_env_t *env)
1577 {
1578         ir_graph *old_irg = env->irg;
1579         keyword_t kwkind;
1580
1581         EXPECT('{');
1582
1583         env->irg = get_const_code_irg();
1584
1585         /* parse all types first */
1586         while (true) {
1587                 skip_ws(env);
1588                 if (env->c == '}') {
1589                         read_c(env);
1590                         break;
1591                 }
1592
1593                 kwkind = (keyword_t) read_enum(env, tt_keyword);
1594                 switch (kwkind) {
1595                 case kw_type:
1596                         import_type(env);
1597                         break;
1598
1599                 case kw_entity:
1600                         import_entity(env);
1601                         break;
1602
1603                 default:
1604                         parse_error(env, "type graph element not supported yet: %d\n", kwkind);
1605                         skip_to(env, '\n');
1606                         break;
1607                 }
1608         }
1609         env->irg = old_irg;
1610         return 1;
1611 }
1612
1613 static int read_node_header(io_env_t *env, long *nodenr, ir_node ***preds,
1614                             const char **nodename)
1615 {
1616         int numpreds;
1617
1618         *nodename = read_word(env);
1619         *nodenr   = read_long(env);
1620
1621         ARR_RESIZE(ir_node*, *preds, 0);
1622
1623         expect_list_begin(env);
1624         for (numpreds = 0; list_has_next(env); numpreds++) {
1625                 long     val  = read_long(env);
1626                 ir_node *pred = get_node_or_dummy(env, val);
1627                 ARR_APP1(ir_node*, *preds, pred);
1628         }
1629
1630         return numpreds;
1631 }
1632
1633 static ir_node *read_ASM(io_env_t *env, int numpreds, ir_node **preds)
1634 {
1635         ir_node *newnode;
1636         ir_asm_constraint *input_constraints  = NEW_ARR_F(ir_asm_constraint, 0);
1637         ir_asm_constraint *output_constraints = NEW_ARR_F(ir_asm_constraint, 0);
1638         ident            **clobbers           = NEW_ARR_F(ident*, 0);
1639
1640         ident *asm_text = read_ident(env);
1641
1642         expect_list_begin(env);
1643         while (list_has_next(env)) {
1644                 ir_asm_constraint constraint;
1645                 constraint.pos        = read_unsigned(env);
1646                 constraint.constraint = read_ident(env);
1647                 constraint.mode       = read_mode(env);
1648                 ARR_APP1(ir_asm_constraint, input_constraints, constraint);
1649         }
1650
1651         expect_list_begin(env);
1652         while (list_has_next(env)) {
1653                 ir_asm_constraint constraint;
1654                 constraint.pos        = read_unsigned(env);
1655                 constraint.constraint = read_ident(env);
1656                 constraint.mode       = read_mode(env);
1657                 ARR_APP1(ir_asm_constraint, output_constraints, constraint);
1658         }
1659
1660         expect_list_begin(env);
1661         while (list_has_next(env)) {
1662                 ident *clobber = read_ident(env);
1663                 ARR_APP1(ident*, clobbers, clobber);
1664         }
1665
1666         assert(ARR_LEN(input_constraints) == numpreds-1);
1667
1668         newnode = new_r_ASM(preds[0], numpreds-1, preds+1,
1669                         input_constraints,
1670                         ARR_LEN(output_constraints),
1671                         output_constraints,
1672                         ARR_LEN(clobbers),
1673                         clobbers,
1674                         asm_text);
1675         return newnode;
1676 }
1677
1678 /** Parses an IRG. */
1679 static int parse_graph(io_env_t *env, ir_graph *irg)
1680 {
1681         ir_node   **preds = NEW_ARR_F(ir_node*,0);
1682         int         i, numpreds, ret = 1;
1683         long        nodenr;
1684         const char *nodename;
1685         ir_node    *node, *newnode;
1686
1687         env->irg = irg;
1688
1689         EXPECT('{');
1690
1691         while (true) {
1692                 skip_ws(env);
1693                 if (env->c == '}') {
1694                         read_c(env);
1695                         break;
1696                 }
1697
1698                 numpreds = read_node_header(env, &nodenr, &preds, &nodename);
1699
1700                 node = get_node_or_null(env, nodenr);
1701                 newnode = NULL;
1702
1703                 EXPECT('{');
1704
1705                 switch (symbol(nodename, tt_iro)) {
1706                 case iro_End: {
1707                         ir_node *newendblock = preds[0];
1708                         newnode = get_irg_end(irg);
1709                         exchange(get_nodes_block(newnode), newendblock);
1710                         for (i = 1; i < numpreds; i++)
1711                                 add_irn_n(newnode, preds[i]);
1712                         break;
1713                 }
1714
1715                 case iro_Start: {
1716                         ir_node *newstartblock = preds[0];
1717                         newnode = get_irg_start(irg);
1718                         exchange(get_nodes_block(newnode), newstartblock);
1719                         break;
1720                 }
1721
1722                 case iro_Block:
1723                         newnode = new_r_Block(irg, numpreds, preds);
1724                         break;
1725
1726                 case iro_Anchor:
1727                         newnode = irg->anchor;
1728                         for (i = 1; i < numpreds; i++)
1729                                 set_irn_n(newnode, i-1, preds[i]);
1730                         set_nodes_block(newnode, preds[0]);
1731                         break;
1732
1733                 case iro_SymConst: {
1734                         long entnr = read_long(env);
1735                         union symconst_symbol sym;
1736                         sym.entity_p = get_entity(env, entnr);
1737                         newnode = new_r_SymConst(irg, mode_P, sym, symconst_addr_ent);
1738                         break;
1739                 }
1740
1741                 case iro_Proj: {
1742                         ir_mode *mode = read_mode(env);
1743                         long     pn   = read_long(env);
1744                         newnode = new_r_Proj(preds[1], mode, pn);
1745                         /* explicitely set block, since preds[1] might be a dummy node
1746                          * which is always in the startblock */
1747                         set_nodes_block(newnode, preds[0]);
1748                         break;
1749                 }
1750
1751                 case iro_ASM:
1752                         newnode = read_ASM(env, numpreds, preds);
1753                         break;
1754
1755                 #include "gen_irio_import.inl"
1756
1757                 default:
1758                         goto notsupported;
1759                 }
1760
1761                 EXPECT('}');
1762
1763                 if (!newnode) {
1764 notsupported:
1765                         parse_error(env, "node type not supported yet: %s\n", nodename);
1766                         abort();
1767                 }
1768
1769                 if (node)
1770                         exchange(node, newnode);
1771                 /* Always update hash entry to avoid more uses of id nodes */
1772                 set_id(env, nodenr, newnode);
1773         }
1774
1775         DEL_ARR_F(preds);
1776
1777         return ret;
1778 }
1779
1780 static int parse_modes(io_env_t *env)
1781 {
1782         EXPECT('{');
1783
1784         while (true) {
1785                 keyword_t kwkind;
1786
1787                 skip_ws(env);
1788                 if (env->c == '}') {
1789                         read_c(env);
1790                         break;
1791                 }
1792
1793                 kwkind = (keyword_t) read_enum(env, tt_keyword);
1794                 switch (kwkind) {
1795                 case kw_mode: {
1796                         const char *name = read_string(env);
1797                         ir_mode_sort sort = (ir_mode_sort)read_enum(env, tt_mode_sort);
1798                         int size = read_long(env);
1799                         int sign = read_long(env);
1800                         ir_mode_arithmetic arith = read_mode_arithmetic(env);
1801                         unsigned modulo_shift = read_long(env);
1802                         int vector_elems = read_long(env);
1803                         ir_mode *mode;
1804
1805                         if (vector_elems != 1) {
1806                                 panic("no support for import of vector modes yes");
1807                         }
1808
1809                         mode = new_ir_mode(name, sort, size, sign, arith, modulo_shift);
1810                         if (mode_is_reference(mode)) {
1811                                 set_reference_mode_signed_eq(mode, read_mode(env));
1812                                 set_reference_mode_unsigned_eq(mode, read_mode(env));
1813                         }
1814                         break;
1815                 }
1816
1817                 default:
1818                         skip_to(env, '\n');
1819                         break;
1820                 }
1821         }
1822         return 1;
1823 }
1824
1825 static int parse_program(io_env_t *env)
1826 {
1827         EXPECT('{');
1828
1829         while (true) {
1830                 keyword_t kwkind;
1831
1832                 skip_ws(env);
1833                 if (env->c == '}') {
1834                         read_c(env);
1835                         break;
1836                 }
1837
1838                 kwkind = (keyword_t) read_enum(env, tt_keyword);
1839                 switch (kwkind) {
1840                 case kw_segment_type: {
1841                         ir_segment_t  segment = (ir_segment_t) read_enum(env, tt_segment);
1842                         ir_type      *type    = read_type(env);
1843                         set_segment_type(segment, type);
1844                         break;
1845                 }
1846                 default:
1847                         parse_error(env, "unexpected keyword %d\n", kwkind);
1848                         skip_to(env, '\n');
1849                 }
1850         }
1851         return 1;
1852 }
1853
1854 void ir_import(const char *filename)
1855 {
1856         FILE *file = fopen(filename, "rt");
1857         if (file == NULL) {
1858                 perror(filename);
1859                 exit(1);
1860         }
1861
1862         ir_import_file(file, filename);
1863
1864         fclose(file);
1865 }
1866
1867 void ir_import_file(FILE *input, const char *inputname)
1868 {
1869         int oldoptimize = get_optimize();
1870         firm_verification_t oldver = get_node_verification_mode();
1871         io_env_t ioenv;
1872         io_env_t *env = &ioenv;
1873         int i, n;
1874
1875         symtbl_init();
1876
1877         memset(env, 0, sizeof(*env));
1878         obstack_init(&env->obst);
1879         env->idset      = new_set(id_cmp, 128);
1880         env->fixedtypes = NEW_ARR_F(ir_type *, 0);
1881         env->inputname  = inputname;
1882         env->file       = input;
1883         env->line       = 1;
1884
1885         /* read first character */
1886         read_c(env);
1887
1888         set_optimize(0);
1889         do_node_verification(FIRM_VERIFICATION_OFF);
1890
1891         while (true) {
1892                 keyword_t kw;
1893
1894                 skip_ws(env);
1895                 if (env->c == EOF)
1896                         break;
1897
1898                 kw = (keyword_t)read_enum(env, tt_keyword);
1899                 switch (kw) {
1900                 case kw_modes:
1901                         if (!parse_modes(env)) goto end;
1902                         break;
1903
1904                 case kw_typegraph:
1905                         if (!parse_typegraph(env)) goto end;
1906                         break;
1907
1908                 case kw_irg:
1909                 {
1910                         ir_entity *irgent = get_entity(env, read_long(env));
1911                         long valuetypeid;
1912                         ir_graph *irg = new_ir_graph(irgent, 0);
1913                         set_irg_frame_type(irg, get_type(env, read_long(env)));
1914                         valuetypeid = read_long(env);
1915                         if (valuetypeid != -1)
1916                                 set_method_value_param_type(get_entity_type(irgent),
1917                                                 get_type(env, valuetypeid));
1918
1919                         if (!parse_graph(env, irg)) goto end;
1920                         break;
1921                 }
1922
1923                 case kw_constirg: {
1924                         ir_graph *constirg = get_const_code_irg();
1925                         long bodyblockid = read_long(env);
1926                         set_id(env, bodyblockid, constirg->current_block);
1927                         if (!parse_graph(env, constirg)) goto end;
1928                         break;
1929                 }
1930
1931                 case kw_program:
1932                         parse_program(env);
1933                         break;
1934
1935                 default: {
1936                         parse_error(env, "Unexpected keyword %d at toplevel\n", kw);
1937                         exit(1);
1938                 }
1939                 }
1940         }
1941
1942 end:
1943         n = ARR_LEN(env->fixedtypes);
1944         for (i = 0; i < n; i++)
1945                 set_type_state(env->fixedtypes[i], layout_fixed);
1946
1947         DEL_ARR_F(env->fixedtypes);
1948
1949         del_set(env->idset);
1950
1951         irp_finalize_cons();
1952
1953         do_node_verification(oldver);
1954         set_optimize(oldoptimize);
1955
1956         obstack_free(&env->obst, NULL);
1957 }