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 /**
 714  * Walker: exports every node.
 715  */
 716 static void export_node(ir_node *irn, void *ctx)
 717 {
 718         io_env_t *env = (io_env_t *) ctx;
 719         int i, n;
 720         unsigned opcode = get_irn_opcode(irn);
 721
 722         if (env->ignoreblocks && opcode == iro_Block)
 723                 return;
 724
 725         fprintf(env->file, "\t%s ", get_irn_opname(irn));
 726         write_long(env, get_irn_node_nr(irn));
 727
 728         write_list_begin(env);
 729         n = get_irn_arity(irn);
 730         if (!is_Block(irn)) {
 731                 ir_node *block = get_nodes_block(irn);
 732                 write_long(env, get_irn_node_nr(block));
 733         }
 734
 735         for (i = 0; i < n; i++) {
 736                 ir_node *pred = get_irn_n(irn, i);
 737                 if (pred == NULL) {
 738                         /* Anchor node may have NULL predecessors */
 739                         assert(is_Anchor(irn));
 740                         fputs("-1 ", env->file);
 741                 } else {
 742                         write_long(env, get_irn_node_nr(pred));
 743                 }
 744         }
 745         write_list_end(env);
 746
 747         fputs("{ ", env->file);
 748
 749         switch (opcode) {
 750         case iro_Start:
 751         case iro_End:
 752         case iro_Block:
 753         case iro_Anchor:
 754                 break;
 755         case iro_SymConst:
 756                 /* TODO: only symconst_addr_ent implemented yet */
 757                 assert(get_SymConst_kind(irn) == symconst_addr_ent);
 758                 fprintf(env->file, "%ld ", get_entity_nr(get_SymConst_entity(irn)));
 759                 break;
 760         case iro_Proj:
 761                 write_mode(env, get_irn_mode(irn));
 762                 fprintf(env->file, "%ld ", get_Proj_proj(irn));
 763                 break;
 764 #include "gen_irio_export.inl"
 765         default:
 766                 panic("no export code for node %+F\n", irn);
 767         }
 768         fputs("}\n", env->file);
 769 }
 770
 771 static const char *get_mode_sort_name(ir_mode_sort sort)
 772 {
 773         switch (sort) {
 774         case irms_auxiliary:        return "auxiliary";
 775         case irms_control_flow:     return "control_flow";
 776         case irms_memory:           return "memory";
 777         case irms_internal_boolean: return "internal_boolean";
 778         case irms_reference:        return "reference";
 779         case irms_int_number:       return "int_number";
 780         case irms_float_number:     return "float_number";
 781         }
 782         panic("invalid mode sort found");
 783 }
 784
 785 static void export_modes(io_env_t *env)
 786 {
 787         int i, n_modes = get_irp_n_modes();
 788
 789         fputs("modes {\n", env->file);
 790
 791         for (i = 0; i < n_modes; i++) {
 792                 ir_mode *mode = get_irp_mode(i);
 793                 switch (get_mode_sort(mode)) {
 794                 case irms_auxiliary:
 795                 case irms_control_flow:
 796                 case irms_memory:
 797                 case irms_internal_boolean:
 798                         /* skip "internal" modes, which may not be user defined */
 799                         continue;
 800                 default:
 801                         break;
 802                 }
 803
 804                 fprintf(env->file, "\tmode ");
 805                 write_string(env, get_mode_name(mode));
 806                 fprintf(env->file, "%s %u %d %s %u %u ",
 807                         get_mode_sort_name(get_mode_sort(mode)),
 808                         get_mode_size_bits(mode), get_mode_sign(mode),
 809                         get_mode_arithmetic_name(get_mode_arithmetic(mode)),
 810                         get_mode_modulo_shift(mode),
 811                         get_mode_n_vector_elems(mode));
 812                 if (mode_is_reference(mode)) {
 813                         write_mode(env, get_reference_mode_signed_eq(mode));
 814                         write_mode(env, get_reference_mode_unsigned_eq(mode));
 815                 }
 816                 fputc('\n', env->file);
 817         }
 818
 819         fputs("}\n", env->file);
 820 }
 821
 822 static void export_program(io_env_t *env)
 823 {
 824         FILE         *f = env->file;
 825         ir_segment_t  s;
 826
 827         fputs("\nprogram {\n", f);
 828         if (irp_prog_name_is_set()) {
 829                 fprintf(f, "\tname ");
 830                 write_string(env, get_irp_name());
 831                 fputc('\n', f);
 832         }
 833
 834         for (s = IR_SEGMENT_FIRST; s <= IR_SEGMENT_LAST; ++s) {
 835                 ir_type *segment_type = get_segment_type(s);
 836                 fprintf(f, "\tsegment_type %s ", get_segment_name(s));
 837                 if (segment_type == NULL) {
 838                         fputs(" NULL\n", f);
 839                 } else {
 840                         write_long(env, get_type_nr(segment_type));
 841                         fputc('\n', f);
 842                 }
 843         }
 844         fputs("}\n", f);
 845 }
 846
 847 void ir_export(const char *filename)
 848 {
 849         FILE *file = fopen(filename, "wt");
 850         if (file == NULL) {
 851                 perror(filename);
 852                 return;
 853         }
 854
 855         ir_export_file(file, filename);
 856         fclose(file);
 857 }
 858
 859 /* Exports the whole irp to the given file in a textual form. */
 860 void ir_export_file(FILE *file, const char *outputname)
 861 {
 862         io_env_t env;
 863         int i, n_irgs = get_irp_n_irgs();
 864
 865         (void) outputname;
 866         env.file = file;
 867
 868         export_modes(&env);
 869
 870         fputs("\ntypegraph {\n", env.file);
 871         type_walk_prog(export_type_or_ent_pre, export_type_or_ent_post, &env);
 872         fputs("}\n", env.file);
 873
 874         for (i = 0; i < n_irgs; i++) {
 875                 ir_graph *irg       = get_irp_irg(i);
 876                 ir_type  *valuetype = get_irg_value_param_type(irg);
 877
 878                 fprintf(env.file, "\nirg %ld %ld %ld {\n",
 879                         get_entity_nr(get_irg_entity(irg)),
 880                         get_type_nr(get_irg_frame_type(irg)),
 881                         valuetype == NULL ? -1 : get_type_nr(valuetype));
 882
 883                 env.ignoreblocks = 0;
 884                 irg_block_walk_graph(irg, NULL, export_node, &env);
 885
 886                 env.ignoreblocks = 1;
 887                 irg_walk_anchors(irg, NULL, export_node, &env);
 888
 889                 fputs("}\n", env.file);
 890         }
 891
 892         fprintf(env.file, "\nconstirg %ld {\n", get_irn_node_nr(get_const_code_irg()->current_block));
 893
 894         walk_const_code(NULL, export_node, &env);
 895         fputs("}\n", env.file);
 896
 897         export_program(&env);
 898 }
 899
 900 /* Exports the given irg to the given file. */
 901 void ir_export_irg(ir_graph *irg, FILE *file, const char *outputname)
 902 {
 903         io_env_t env;
 904
 905         (void) outputname;
 906         env.file = file;
 907
 908         export_modes(&env);
 909
 910         fputs("typegraph {\n", env.file);
 911
 912         type_walk_irg(irg, export_type_or_ent_pre, export_type_or_ent_post, &env);
 913
 914         fprintf(env.file, "}\n\nirg %ld {\n", get_entity_nr(get_irg_entity(irg)));
 915
 916         env.ignoreblocks = 0;
 917         irg_block_walk_graph(irg, NULL, export_node, &env);
 918
 919         env.ignoreblocks = 1;
 920         irg_walk_anchors(irg, NULL, export_node, &env);
 921
 922         /* TODO: Only output needed constants */
 923         fprintf(env.file, "}\n\nconstirg %ld {\n", get_irn_node_nr(get_const_code_irg()->current_block));
 924         walk_const_code(NULL, export_node, &env);
 925         fputs("}\n", env.file);
 926 }
 927
 928 static void read_c(io_env_t *env)
 929 {
 930         int c = fgetc(env->file);
 931         env->c = c;
 932         if (c == '\n')
 933                 env->line++;
 934 }
 935
 936 /** Returns the first non-whitespace character or EOF. **/
 937 static void skip_ws(io_env_t *env)
 938 {
 939         while (true) {
 940                 switch (env->c) {
 941                 case ' ':
 942                 case '\t':
 943                 case '\n':
 944                 case '\r':
 945                         read_c(env);
 946                         continue;
 947
 948                 default:
 949                         return;
 950                 }
 951         }
 952 }
 953
 954 static void skip_to(io_env_t *env, char to_ch)
 955 {
 956         while (env->c != to_ch && env->c != EOF) {
 957                 read_c(env);
 958         }
 959 }
 960
 961 static int expect_char(io_env_t *env, char ch)
 962 {
 963         skip_ws(env);
 964         if (env->c != ch) {
 965                 parse_error(env, "Unexpected char '%c', expected '%c'\n",
 966                             env->c, ch);
 967                 return 0;
 968         }
 969         read_c(env);
 970         return 1;
 971 }
 972
 973 #define EXPECT(c) if (expect_char(env, (c))) {} else return 0
 974
 975 static char *read_word(io_env_t *env)
 976 {
 977         skip_ws(env);
 978
 979         assert(obstack_object_size(&env->obst) == 0);
 980         while (true) {
 981                 int c = env->c;
 982                 switch (c) {
 983                 case EOF:
 984                 case ' ':
 985                 case '\t':
 986                 case '\n':
 987                 case '\r':
 988                         goto endofword;
 989
 990                 default:
 991                         obstack_1grow(&env->obst, c);
 992                         break;
 993                 }
 994                 read_c(env);
 995         }
 996
 997 endofword:
 998         obstack_1grow(&env->obst, '\0');
 999         return (char*)obstack_finish(&env->obst);
1000 }
1001
1002 static char *read_string(io_env_t *env)
1003 {
1004         skip_ws(env);
1005         if (env->c != '"') {
1006                 parse_error(env, "Expected string, got '%c'\n", env->c);
1007                 exit(1);
1008         }
1009         read_c(env);
1010
1011         assert(obstack_object_size(&env->obst) == 0);
1012         while (env->c != '"') {
1013                 if (env->c == EOF) {
1014                         parse_error(env, "Unexpected EOF while parsing string\n");
1015                         exit(1);
1016                 }
1017
1018                 if (env->c == '\\') {
1019                         read_c(env);
1020                         switch (env->c) {
1021                         case 'n':
1022                                 obstack_1grow(&env->obst, '\n');
1023                                 break;
1024                         case '"':
1025                         case '\\':
1026                                 obstack_1grow(&env->obst, env->c);
1027                                 break;
1028                         default:
1029                                 parse_error(env, "Unknown escape sequence '\\%c'\n", env->c);
1030                                 exit(1);
1031                                 break;
1032                         }
1033                 } else {
1034                         obstack_1grow(&env->obst, env->c);
1035                 }
1036                 read_c(env);
1037         }
1038         read_c(env);
1039         obstack_1grow(&env->obst, 0);
1040
1041         return (char*)obstack_finish(&env->obst);
1042 }
1043
1044 static ident *read_ident(io_env_t *env)
1045 {
1046         char  *str = read_string(env);
1047         ident *res = new_id_from_str(str);
1048         obstack_free(&env->obst, str);
1049         return res;
1050 }
1051
1052 /*
1053  * reads a "quoted string" or alternatively the token NULL
1054  */
1055 static char *read_string_null(io_env_t *env)
1056 {
1057         skip_ws(env);
1058         if (env->c == 'N') {
1059                 char *str = read_word(env);
1060                 if (strcmp(str, "NULL") == 0) {
1061                         obstack_free(&env->obst, str);
1062                         return NULL;
1063                 }
1064         } else if (env->c == '"') {
1065                 return read_string(env);
1066         }
1067
1068         parse_error(env, "Expected \"string\" or NULL\n");
1069         exit(1);
1070 }
1071
1072 static ident *read_ident_null(io_env_t *env)
1073 {
1074         ident *res;
1075         char  *str = read_string_null(env);
1076         if (str == NULL)
1077                 return NULL;
1078
1079         res = new_id_from_str(str);
1080         obstack_free(&env->obst, str);
1081         return res;
1082 }
1083
1084 static long read_long(io_env_t *env)
1085 {
1086         long  result;
1087         char *str;
1088
1089         skip_ws(env);
1090         if (!isdigit(env->c) && env->c != '-') {
1091                 parse_error(env, "Expected number, got '%c'\n", env->c);
1092                 exit(1);
1093         }
1094
1095         assert(obstack_object_size(&env->obst) == 0);
1096         do {
1097                 obstack_1grow(&env->obst, env->c);
1098                 read_c(env);
1099         } while (isdigit(env->c));
1100         obstack_1grow(&env->obst, 0);
1101
1102         str = (char*)obstack_finish(&env->obst);
1103         result = atol(str);
1104         obstack_free(&env->obst, str);
1105
1106         return result;
1107 }
1108
1109 static int read_int(io_env_t *env)
1110 {
1111         return (int) read_long(env);
1112 }
1113
1114 static unsigned read_unsigned(io_env_t *env)
1115 {
1116         return (unsigned) read_long(env);
1117 }
1118
1119 static void expect_list_begin(io_env_t *env)
1120 {
1121         skip_ws(env);
1122         if (env->c != '[') {
1123                 parse_error(env, "Expected list, got '%c'\n", env->c);
1124                 exit(1);
1125         }
1126         read_c(env);
1127 }
1128
1129 static bool list_has_next(io_env_t *env)
1130 {
1131         if (feof(env->file)) {
1132                 parse_error(env, "Unexpected EOF while reading list");
1133                 exit(1);
1134         }
1135         skip_ws(env);
1136         if (env->c == ']') {
1137                 read_c(env);
1138                 return false;
1139         }
1140
1141         return true;
1142 }
1143
1144 static ir_node *get_node_or_null(io_env_t *env, long nodenr)
1145 {
1146         ir_node *node = (ir_node *) get_id(env, nodenr);
1147         if (node && node->kind != k_ir_node) {
1148                 panic("Irn ID %ld collides with something else in line %d\n",
1149                       nodenr, env->line);
1150         }
1151         return node;
1152 }
1153
1154 static ir_node *get_node_or_dummy(io_env_t *env, long nodenr)
1155 {
1156         ir_node *node = get_node_or_null(env, nodenr);
1157         if (node == NULL) {
1158                 node = new_r_Dummy(env->irg, mode_X);
1159                 set_id(env, nodenr, node);
1160         }
1161         return node;
1162 }
1163
1164 static ir_type *get_type(io_env_t *env, long typenr)
1165 {
1166         ir_type *type = (ir_type *) get_id(env, typenr);
1167         if (type == NULL)
1168                 panic("unknown type: %ld in line %d\n", typenr, env->line);
1169         else if (type->kind != k_type)
1170                 panic("type ID %ld collides with something else in line %d\n",
1171                       typenr, env->line);
1172         return type;
1173 }
1174
1175 static ir_type *read_type(io_env_t *env)
1176 {
1177         return get_type(env, read_long(env));
1178 }
1179
1180 static ir_entity *get_entity(io_env_t *env, long entnr)
1181 {
1182         ir_entity *entity = (ir_entity *) get_id(env, entnr);
1183         if (entity == NULL) {
1184                 parse_error(env, "unknown entity: %ld\n", entnr);
1185                 exit(1);
1186         } else if (entity->kind != k_entity) {
1187                 panic("Entity ID %ld collides with something else in line %d\n",
1188                       entnr, env->line);
1189         }
1190
1191         return entity;
1192 }
1193
1194 static ir_entity *read_entity(io_env_t *env)
1195 {
1196         return get_entity(env, read_long(env));
1197 }
1198
1199 static ir_mode *read_mode(io_env_t *env)
1200 {
1201         char *str = read_word(env);
1202         int i, n;
1203
1204         n = get_irp_n_modes();
1205         for (i = 0; i < n; i++) {
1206                 ir_mode *mode = get_irp_mode(i);
1207                 if (strcmp(str, get_mode_name(mode)) == 0) {
1208                         obstack_free(&env->obst, str);
1209                         return mode;
1210                 }
1211         }
1212
1213         parse_error(env, "unknown mode \"%s\"\n", str);
1214         exit(1);
1215 }
1216
1217 static const char *get_typetag_name(typetag_t typetag)
1218 {
1219         switch (typetag) {
1220         case tt_align:              return "align";
1221         case tt_allocation:         return "allocation";
1222         case tt_builtin:            return "builtin kind";
1223         case tt_cond_jmp_predicate: return "cond_jmp_predicate";
1224         case tt_initializer:        return "initializer kind";
1225         case tt_iro:                return "opcode";
1226         case tt_keyword:            return "keyword";
1227         case tt_linkage:            return "linkage";
1228         case tt_mode_arithmetic:    return "mode_arithmetic";
1229         case tt_mode_sort:          return "mode_sort";
1230         case tt_pin_state:          return "pin state";
1231         case tt_segment:            return "segment";
1232         case tt_tpo:                return "type";
1233         case tt_type_state:         return "type state";
1234         case tt_volatility:         return "volatility";
1235         case tt_visibility:         return "visibility";
1236         }
1237         return "<UNKNOWN>";
1238 }
1239
1240 /**
1241  * Read and decode an enum constant.
1242  */
1243 static unsigned read_enum(io_env_t *env, typetag_t typetag)
1244 {
1245         char     *str  = read_word(env);
1246         unsigned  code = symbol(str, typetag);
1247
1248         if (code != SYMERROR) {
1249                 obstack_free(&env->obst, str);
1250                 return code;
1251         }
1252
1253         parse_error(env, "invalid %s: \"%s\"\n", get_typetag_name(typetag), str);
1254         return 0;
1255 }
1256
1257 #define read_align(env)              ((ir_align)              read_enum(env, tt_align))
1258 #define read_allocation(env)         ((ir_allocation)         read_enum(env, tt_allocation))
1259 #define read_builtin_kind(env)       ((ir_builtin_kind)       read_enum(env, tt_builtin))
1260 #define read_cond_jmp_predicate(env) ((cond_jmp_predicate)    read_enum(env, tt_cond_jmp_predicate))
1261 #define read_initializer_kind(env)   ((ir_initializer_kind_t) read_enum(env, tt_initializer))
1262 #define read_mode_arithmetic(env)    ((ir_mode_arithmetic)    read_enum(env, tt_mode_arithmetic))
1263 #define read_peculiarity(env)        ((ir_peculiarity)        read_enum(env, tt_peculiarity))
1264 #define read_pin_state(env)          ((op_pin_state)          read_enum(env, tt_pin_state))
1265 #define read_type_state(env)         ((ir_type_state)         read_enum(env, tt_type_state))
1266 #define read_variability(env)        ((ir_variability)        read_enum(env, tt_variability))
1267 #define read_volatility(env)         ((ir_volatility)         read_enum(env, tt_volatility))
1268
1269 static ir_cons_flags get_cons_flags(io_env_t *env)
1270 {
1271         ir_cons_flags flags = cons_none;
1272
1273         op_pin_state pinstate = read_pin_state(env);
1274         switch (pinstate) {
1275         case op_pin_state_floats: flags |= cons_floats; break;
1276         case op_pin_state_pinned: break;
1277         default:
1278                 panic("Error in %d: Invalid pinstate: %s", env->line,
1279                       get_op_pin_state_name(pinstate));
1280         }
1281
1282         if (read_volatility(env) == volatility_is_volatile)
1283                 flags |= cons_volatile;
1284         if (read_align(env) == align_non_aligned)
1285                 flags |= cons_unaligned;
1286
1287         return flags;
1288 }
1289
1290 static ir_tarval *read_tv(io_env_t *env)
1291 {
1292         ir_mode   *tvmode = read_mode(env);
1293         char      *str    = read_word(env);
1294         ir_tarval *tv     = new_tarval_from_str(str, strlen(str), tvmode);
1295         obstack_free(&env->obst, str);
1296
1297         return tv;
1298 }
1299
1300 static ir_initializer_t *read_initializer(io_env_t *env)
1301 {
1302         ir_initializer_kind_t ini_kind = read_initializer_kind(env);
1303
1304         switch (ini_kind) {
1305         case IR_INITIALIZER_CONST: {
1306                 ir_node *irn = get_node_or_dummy(env, read_long(env));
1307                 return create_initializer_const(irn);
1308         }
1309
1310         case IR_INITIALIZER_TARVAL:
1311                 return create_initializer_tarval(read_tv(env));
1312
1313         case IR_INITIALIZER_NULL:
1314                 return get_initializer_null();
1315
1316         case IR_INITIALIZER_COMPOUND: {
1317                 unsigned i, n = (unsigned) read_long(env);
1318                 ir_initializer_t *ini = create_initializer_compound(n);
1319                 for (i = 0; i < n; i++) {
1320                         ir_initializer_t *curini = read_initializer(env);
1321                         set_initializer_compound_value(ini, i, curini);
1322                 }
1323                 return ini;
1324         }
1325
1326         default:
1327                 panic("Unknown initializer kind");
1328         }
1329 }
1330
1331
1332 /** Reads a type description and remembers it by its id. */
1333 static void import_type(io_env_t *env)
1334 {
1335         int            i;
1336         ir_type       *type;
1337         long           typenr = read_long(env);
1338         tp_opcode      tpop   = (tp_opcode) read_enum(env, tt_tpo);
1339         unsigned       size   = (unsigned) read_long(env);
1340         unsigned       align  = (unsigned) read_long(env);
1341         ir_type_state  state  = read_type_state(env);
1342         unsigned       flags  = (unsigned) read_long(env);
1343
1344         switch (tpop) {
1345         case tpo_array: {
1346                 int ndims = (int) read_long(env);
1347                 long elemtypenr = read_long(env);
1348                 ir_type *elemtype = get_type(env, elemtypenr);
1349
1350                 type = new_type_array(ndims, elemtype);
1351                 for (i = 0; i < ndims; i++) {
1352                         char *str = read_word(env);
1353                         if (strcmp(str, "unknown") != 0) {
1354                                 long lowerbound = atol(str);
1355                                 set_array_lower_bound_int(type, i, lowerbound);
1356                         }
1357                         obstack_free(&env->obst, str);
1358
1359                         str = read_word(env);
1360                         if (strcmp(str, "unknown") != 0) {
1361                                 long upperbound = atol(str);
1362                                 set_array_upper_bound_int(type, i, upperbound);
1363                         }
1364                         obstack_free(&env->obst, str);
1365                 }
1366                 set_type_size_bytes(type, size);
1367                 break;
1368         }
1369
1370         case tpo_class: {
1371                 ident *id = read_ident_null(env);
1372
1373                 if (typenr == (long) IR_SEGMENT_GLOBAL)
1374                         type = get_glob_type();
1375                 else
1376                         type = new_type_class(id);
1377                 set_type_size_bytes(type, size);
1378                 break;
1379         }
1380
1381         case tpo_method: {
1382                 unsigned                  callingconv = (unsigned) read_long(env);
1383                 mtp_additional_properties addprops    = (mtp_additional_properties) read_long(env);
1384                 int nparams          = (int)      read_long(env);
1385                 int nresults         = (int)      read_long(env);
1386                 int variaindex;
1387
1388                 type = new_type_method(nparams, nresults);
1389
1390                 for (i = 0; i < nparams; i++) {
1391                         long     typenr = read_long(env);
1392                         ir_type *paramtype = get_type(env, typenr);
1393
1394                         set_method_param_type(type, i, paramtype);
1395                 }
1396                 for (i = 0; i < nresults; i++) {
1397                         long typenr = read_long(env);
1398                         ir_type *restype = get_type(env, typenr);
1399
1400                         set_method_res_type(type, i, restype);
1401                 }
1402
1403                 variaindex = (int) read_long(env);
1404                 if (variaindex != -1) {
1405                         set_method_variadicity(type, variadicity_variadic);
1406                         if (variaindex != nparams)
1407                                 set_method_first_variadic_param_index(type, variaindex);
1408                 }
1409
1410                 set_method_calling_convention(type, callingconv);
1411                 set_method_additional_properties(type, addprops);
1412                 break;
1413         }
1414
1415         case tpo_pointer: {
1416                 ir_mode *mode     = read_mode(env);
1417                 ir_type *pointsto = get_type(env, read_long(env));
1418                 type = new_type_pointer(pointsto);
1419                 set_type_mode(type, mode);
1420                 break;
1421         }
1422
1423         case tpo_primitive: {
1424                 ir_mode *mode = read_mode(env);
1425                 type = new_type_primitive(mode);
1426                 break;
1427         }
1428
1429         case tpo_struct: {
1430                 ident *id = read_ident_null(env);
1431                 type = new_type_struct(id);
1432                 set_type_size_bytes(type, size);
1433                 break;
1434         }
1435
1436         case tpo_union: {
1437                 ident *id = read_ident_null(env);
1438                 type = new_type_union(id);
1439                 set_type_size_bytes(type, size);
1440                 break;
1441         }
1442
1443         case tpo_unknown:
1444                 return;   /* ignore unknown type */
1445
1446         default:
1447                 parse_error(env, "unknown type kind: \"%d\"\n", tpop);
1448                 skip_to(env, '\n');
1449                 return;
1450         }
1451
1452         set_type_alignment_bytes(type, align);
1453         type->flags = flags;
1454
1455         if (state == layout_fixed)
1456                 ARR_APP1(ir_type *, env->fixedtypes, type);
1457
1458         set_id(env, typenr, type);
1459 }
1460
1461 /** Reads an entity description and remembers it by its id. */
1462 static void import_entity(io_env_t *env)
1463 {
1464         long           entnr      = read_long(env);
1465         ident         *name       = read_ident(env);
1466         ident         *ld_name    = read_ident_null(env);
1467         ir_visibility  visibility = ir_visibility_default;
1468         ir_linkage     linkage    = IR_LINKAGE_DEFAULT;
1469         long           typenr;
1470         long           ownertypenr;
1471         const char    *str;
1472         ir_type       *type;
1473         ir_type       *ownertype;
1474         ir_entity     *entity;
1475
1476         skip_ws(env);
1477         while (!isdigit(env->c)) {
1478                 char     *str = read_word(env);
1479                 unsigned  v;
1480
1481                 skip_ws(env);
1482
1483                 v = symbol(str, tt_visibility);
1484                 if (v != SYMERROR) {
1485                         visibility = (ir_visibility)v;
1486                         continue;
1487                 }
1488                 v = symbol(str, tt_linkage);
1489                 if (v != SYMERROR) {
1490                         linkage |= (ir_linkage)v;
1491                         continue;
1492                 }
1493                 printf("Parser error, expected visibility or linkage, got '%s'\n",
1494                        str);
1495                 break;
1496         }
1497
1498         typenr      = read_long(env);
1499         ownertypenr = read_long(env);
1500
1501         type      = get_type(env, typenr);
1502         ownertype = !ownertypenr ? get_glob_type() : get_type(env, ownertypenr);
1503         entity    = new_entity(ownertype, name, type);
1504
1505         if (ld_name != NULL)
1506                 set_entity_ld_ident(entity, ld_name);
1507         set_entity_offset(entity, (int) read_long(env));
1508         set_entity_offset_bits_remainder(entity, (unsigned char) read_long(env));
1509         set_entity_compiler_generated(entity, (int) read_long(env));
1510         set_entity_volatility(entity, read_volatility(env));
1511         set_entity_visibility(entity, visibility);
1512         set_entity_linkage(entity, linkage);
1513
1514         str = read_word(env);
1515         if (strcmp(str, "initializer") == 0) {
1516                 set_entity_initializer(entity, read_initializer(env));
1517         } else if (strcmp(str, "compoundgraph") == 0) {
1518                 int n = (int) read_long(env);
1519                 int i;
1520                 for (i = 0; i < n; i++) {
1521                         ir_entity *member = get_entity(env, read_long(env));
1522                         ir_node   *irn    = get_node_or_dummy(env, read_long(env));
1523                         add_compound_ent_value(entity, irn, member);
1524                 }
1525         } else if (strcmp(str, "none") == 0) {
1526                 /* do nothing */
1527         } else {
1528                 parse_error(env, "expected 'initializer', 'compoundgraph' or 'none' got '%s'\n", str);
1529                 exit(1);
1530         }
1531
1532         set_id(env, entnr, entity);
1533 }
1534
1535 /** Parses the whole type graph. */
1536 static int parse_typegraph(io_env_t *env)
1537 {
1538         ir_graph *old_irg = env->irg;
1539         keyword_t kwkind;
1540
1541         EXPECT('{');
1542
1543         env->irg = get_const_code_irg();
1544
1545         /* parse all types first */
1546         while (true) {
1547                 skip_ws(env);
1548                 if (env->c == '}') {
1549                         read_c(env);
1550                         break;
1551                 }
1552
1553                 kwkind = (keyword_t) read_enum(env, tt_keyword);
1554                 switch (kwkind) {
1555                 case kw_type:
1556                         import_type(env);
1557                         break;
1558
1559                 case kw_entity:
1560                         import_entity(env);
1561                         break;
1562
1563                 default:
1564                         parse_error(env, "type graph element not supported yet: %d\n", kwkind);
1565                         skip_to(env, '\n');
1566                         break;
1567                 }
1568         }
1569         env->irg = old_irg;
1570         return 1;
1571 }
1572
1573 static int read_node_header(io_env_t *env, long *nodenr, ir_node ***preds,
1574                             const char **nodename)
1575 {
1576         int numpreds;
1577
1578         *nodename = read_word(env);
1579         *nodenr   = read_long(env);
1580
1581         ARR_RESIZE(ir_node*, *preds, 0);
1582
1583         expect_list_begin(env);
1584         for (numpreds = 0; list_has_next(env); numpreds++) {
1585                 long     val  = read_long(env);
1586                 ir_node *pred = get_node_or_dummy(env, val);
1587                 ARR_APP1(ir_node*, *preds, pred);
1588         }
1589
1590         return numpreds;
1591 }
1592
1593 /** Parses an IRG. */
1594 static int parse_graph(io_env_t *env, ir_graph *irg)
1595 {
1596         ir_node   **preds = NEW_ARR_F(ir_node*,0);
1597         int         i, numpreds, ret = 1;
1598         long        nodenr;
1599         const char *nodename;
1600         ir_node    *node, *newnode;
1601
1602         env->irg = irg;
1603
1604         EXPECT('{');
1605
1606         while (true) {
1607                 skip_ws(env);
1608                 if (env->c == '}') {
1609                         read_c(env);
1610                         break;
1611                 }
1612
1613                 numpreds = read_node_header(env, &nodenr, &preds, &nodename);
1614
1615                 node = get_node_or_null(env, nodenr);
1616                 newnode = NULL;
1617
1618                 EXPECT('{');
1619
1620                 switch (symbol(nodename, tt_iro)) {
1621                 case iro_End: {
1622                         ir_node *newendblock = preds[0];
1623                         newnode = get_irg_end(irg);
1624                         exchange(get_nodes_block(newnode), newendblock);
1625                         for (i = 1; i < numpreds; i++)
1626                                 add_irn_n(newnode, preds[i]);
1627                         break;
1628                 }
1629
1630                 case iro_Start: {
1631                         ir_node *newstartblock = preds[0];
1632                         newnode = get_irg_start(irg);
1633                         exchange(get_nodes_block(newnode), newstartblock);
1634                         break;
1635                 }
1636
1637                 case iro_Block:
1638                         newnode = new_r_Block(irg, numpreds, preds);
1639                         break;
1640
1641                 case iro_Anchor:
1642                         newnode = irg->anchor;
1643                         for (i = 1; i < numpreds; i++)
1644                                 set_irn_n(newnode, i-1, preds[i]);
1645                         set_nodes_block(newnode, preds[0]);
1646                         break;
1647
1648                 case iro_SymConst: {
1649                         long entnr = read_long(env);
1650                         union symconst_symbol sym;
1651                         sym.entity_p = get_entity(env, entnr);
1652                         newnode = new_r_SymConst(irg, mode_P, sym, symconst_addr_ent);
1653                         break;
1654                 }
1655
1656                 case iro_Proj: {
1657                         ir_mode *mode = read_mode(env);
1658                         long     pn   = read_long(env);
1659                         newnode = new_r_Proj(preds[1], mode, pn);
1660                         /* explicitely set block, since preds[1] might be a dummy node
1661                          * which is always in the startblock */
1662                         set_nodes_block(newnode, preds[0]);
1663                         break;
1664                 }
1665
1666                 #include "gen_irio_import.inl"
1667
1668                 default:
1669                         goto notsupported;
1670                 }
1671
1672                 EXPECT('}');
1673
1674                 if (!newnode) {
1675 notsupported:
1676                         parse_error(env, "node type not supported yet: %s\n", nodename);
1677                         abort();
1678                 }
1679
1680                 if (node)
1681                         exchange(node, newnode);
1682                 /* Always update hash entry to avoid more uses of id nodes */
1683                 set_id(env, nodenr, newnode);
1684         }
1685
1686         DEL_ARR_F(preds);
1687
1688         return ret;
1689 }
1690
1691 static int parse_modes(io_env_t *env)
1692 {
1693         EXPECT('{');
1694
1695         while (true) {
1696                 keyword_t kwkind;
1697
1698                 skip_ws(env);
1699                 if (env->c == '}') {
1700                         read_c(env);
1701                         break;
1702                 }
1703
1704                 kwkind = (keyword_t) read_enum(env, tt_keyword);
1705                 switch (kwkind) {
1706                 case kw_mode: {
1707                         const char *name = read_string(env);
1708                         ir_mode_sort sort = (ir_mode_sort)read_enum(env, tt_mode_sort);
1709                         int size = read_long(env);
1710                         int sign = read_long(env);
1711                         ir_mode_arithmetic arith = read_mode_arithmetic(env);
1712                         unsigned modulo_shift = read_long(env);
1713                         int vector_elems = read_long(env);
1714                         ir_mode *mode;
1715
1716                         if (vector_elems != 1) {
1717                                 panic("no support for import of vector modes yes");
1718                         }
1719
1720                         mode = new_ir_mode(name, sort, size, sign, arith, modulo_shift);
1721                         if (mode_is_reference(mode)) {
1722                                 set_reference_mode_signed_eq(mode, read_mode(env));
1723                                 set_reference_mode_unsigned_eq(mode, read_mode(env));
1724                         }
1725                         break;
1726                 }
1727
1728                 default:
1729                         skip_to(env, '\n');
1730                         break;
1731                 }
1732         }
1733         return 1;
1734 }
1735
1736 static int parse_program(io_env_t *env)
1737 {
1738         EXPECT('{');
1739
1740         while (true) {
1741                 keyword_t kwkind;
1742
1743                 skip_ws(env);
1744                 if (env->c == '}') {
1745                         read_c(env);
1746                         break;
1747                 }
1748
1749                 kwkind = (keyword_t) read_enum(env, tt_keyword);
1750                 switch (kwkind) {
1751                 case kw_segment_type: {
1752                         ir_segment_t  segment = (ir_segment_t) read_enum(env, tt_segment);
1753                         ir_type      *type    = read_type(env);
1754                         set_segment_type(segment, type);
1755                         break;
1756                 }
1757                 default:
1758                         parse_error(env, "unexpected keyword %d\n", kwkind);
1759                         skip_to(env, '\n');
1760                 }
1761         }
1762         return 1;
1763 }
1764
1765 void ir_import(const char *filename)
1766 {
1767         FILE *file = fopen(filename, "rt");
1768         if (file == NULL) {
1769                 perror(filename);
1770                 exit(1);
1771         }
1772
1773         ir_import_file(file, filename);
1774
1775         fclose(file);
1776 }
1777
1778 void ir_import_file(FILE *input, const char *inputname)
1779 {
1780         int oldoptimize = get_optimize();
1781         firm_verification_t oldver = get_node_verification_mode();
1782         io_env_t ioenv;
1783         io_env_t *env = &ioenv;
1784         int i, n;
1785
1786         symtbl_init();
1787
1788         memset(env, 0, sizeof(*env));
1789         obstack_init(&env->obst);
1790         env->idset      = new_set(id_cmp, 128);
1791         env->fixedtypes = NEW_ARR_F(ir_type *, 0);
1792         env->inputname  = inputname;
1793         env->file       = input;
1794         env->line       = 1;
1795
1796         /* read first character */
1797         read_c(env);
1798
1799         set_optimize(0);
1800         do_node_verification(FIRM_VERIFICATION_OFF);
1801
1802         while (true) {
1803                 keyword_t kw;
1804
1805                 skip_ws(env);
1806                 if (env->c == EOF)
1807                         break;
1808
1809                 kw = (keyword_t)read_enum(env, tt_keyword);
1810                 switch (kw) {
1811                 case kw_modes:
1812                         if (!parse_modes(env)) goto end;
1813                         break;
1814
1815                 case kw_typegraph:
1816                         if (!parse_typegraph(env)) goto end;
1817                         break;
1818
1819                 case kw_irg:
1820                 {
1821                         ir_entity *irgent = get_entity(env, read_long(env));
1822                         long valuetypeid;
1823                         ir_graph *irg = new_ir_graph(irgent, 0);
1824                         set_irg_frame_type(irg, get_type(env, read_long(env)));
1825                         valuetypeid = read_long(env);
1826                         if (valuetypeid != -1)
1827                                 set_method_value_param_type(get_entity_type(irgent),
1828                                                 get_type(env, valuetypeid));
1829
1830                         if (!parse_graph(env, irg)) goto end;
1831                         break;
1832                 }
1833
1834                 case kw_constirg: {
1835                         ir_graph *constirg = get_const_code_irg();
1836                         long bodyblockid = read_long(env);
1837                         set_id(env, bodyblockid, constirg->current_block);
1838                         if (!parse_graph(env, constirg)) goto end;
1839                         break;
1840                 }
1841
1842                 case kw_program:
1843                         parse_program(env);
1844                         break;
1845
1846                 default: {
1847                         parse_error(env, "Unexpected keyword %d at toplevel\n", kw);
1848                         exit(1);
1849                 }
1850                 }
1851         }
1852
1853 end:
1854         n = ARR_LEN(env->fixedtypes);
1855         for (i = 0; i < n; i++)
1856                 set_type_state(env->fixedtypes[i], layout_fixed);
1857
1858         DEL_ARR_F(env->fixedtypes);
1859
1860         del_set(env->idset);
1861
1862         irp_finalize_cons();
1863
1864         do_node_verification(oldver);
1865         set_optimize(oldoptimize);
1866
1867         obstack_free(&env->obst, NULL);
1868 }