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

   1 /*
   2  * Copyright (C) 1995-2011 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 "irprintf.h"
  39 #include "ircons.h"
  40 #include "irgmod.h"
  41 #include "irflag_t.h"
  42 #include "irgwalk.h"
  43 #include "tv.h"
  44 #include "array.h"
  45 #include "error.h"
  46 #include "typerep.h"
  47 #include "adt/set.h"
  48 #include "adt/obst.h"
  49
  50 #define SYMERROR ((unsigned) ~0)
  51
  52 typedef struct io_env_t
  53 {
  54         int c;                /**< currently read char */
  55         FILE *file;
  56         set *idset;           /**< id_entry set, which maps from file ids to new Firm elements */
  57         int ignoreblocks;
  58         const char *inputname;
  59         int line;
  60         ir_type **fixedtypes;
  61         struct obstack obst;
  62         ir_graph *irg;
  63 } io_env_t;
  64
  65 typedef enum typetag_t
  66 {
  67         tt_align,
  68         tt_allocation,
  69         tt_builtin,
  70         tt_cond_jmp_predicate,
  71         tt_initializer,
  72         tt_iro,
  73         tt_keyword,
  74         tt_mode_sort,
  75         tt_mode_arithmetic,
  76         tt_pin_state,
  77         tt_tpo,
  78         tt_type_state,
  79         tt_volatility,
  80         tt_linkage,
  81         tt_segment,
  82         tt_visibility
  83 } typetag_t;
  84
  85 typedef enum keyword_t
  86 {
  87         kw_constirg,
  88         kw_entity,
  89         kw_irg,
  90         kw_mode,
  91         kw_modes,
  92         kw_type,
  93         kw_typegraph,
  94         kw_program,
  95         kw_segment_type
  96 } keyword_t;
  97
  98 typedef struct symbol_t
  99 {
 100         const char *str;      /**< The name of this symbol. */
 101         typetag_t   typetag;  /**< The type tag of this symbol. */
 102         unsigned    code;     /**< The value of this symbol. */
 103 } symbol_t;
 104
 105 typedef struct id_entry
 106 {
 107         long id;
 108         void *elem;
 109 } id_entry;
 110
 111 /** The symbol table, a set of symbol_t elements. */
 112 static set *symtbl;
 113
 114 /**
 115  * Compare two symbol table entries.
 116  */
 117 static int symbol_cmp(const void *elt, const void *key, size_t size)
 118 {
 119         int res;
 120         const symbol_t *entry = (const symbol_t *) elt;
 121         const symbol_t *keyentry = (const symbol_t *) key;
 122         (void) size;
 123         res = entry->typetag - keyentry->typetag;
 124         if (res) return res;
 125         return strcmp(entry->str, keyentry->str);
 126 }
 127
 128 static int id_cmp(const void *elt, const void *key, size_t size)
 129 {
 130         const id_entry *entry = (const id_entry *) elt;
 131         const id_entry *keyentry = (const id_entry *) key;
 132         (void) size;
 133         return entry->id - keyentry->id;
 134 }
 135
 136 static void __attribute__((format(printf, 2, 3)))
 137 parse_error(io_env_t *env, const char *fmt, ...)
 138 {
 139         va_list ap;
 140         int     line = env->line;
 141
 142         /* workaround read_c "feature" that a '\n' triggers the line++
 143          * instead of the character after the '\n' */
 144         if (env->c == '\n') {
 145                 line--;
 146         }
 147
 148         fprintf(stderr, "%s:%d: error ", env->inputname, line);
 149
 150         va_start(ap, fmt);
 151         vfprintf(stderr, fmt, ap);
 152         va_end(ap);
 153 }
 154
 155 /** Initializes the symbol table. May be called more than once without problems. */
 156 static void symtbl_init(void)
 157 {
 158         symbol_t key;
 159
 160         /* Only initialize once */
 161         if (symtbl != NULL)
 162                 return;
 163
 164         symtbl = new_set(symbol_cmp, 256);
 165
 166 #define INSERT(tt, s, cod)                                       \
 167         key.str = (s);                                               \
 168         key.typetag = (tt);                                          \
 169         key.code = (cod);                                            \
 170         set_insert(symtbl, &key, sizeof(key), firm_fnv_hash_str(s) + tt * 17)
 171
 172 #define INSERTENUM(tt, e) INSERT(tt, #e, e)
 173 #define INSERTKEYWORD(k) INSERT(tt_keyword, #k, kw_##k)
 174
 175         INSERT(tt_tpo, "array", tpo_array);
 176         INSERT(tt_tpo, "class", tpo_class);
 177         INSERT(tt_tpo, "method", tpo_method);
 178         INSERT(tt_tpo, "pointer", tpo_pointer);
 179         INSERT(tt_tpo, "primitive", tpo_primitive);
 180         INSERT(tt_tpo, "struct", tpo_struct);
 181         INSERT(tt_tpo, "union", tpo_union);
 182         INSERT(tt_tpo, "Unknown", tpo_unknown);
 183
 184         INSERT(tt_mode_sort, "auxiliary", irms_auxiliary);
 185         INSERT(tt_mode_sort, "control_flow", irms_control_flow);
 186         INSERT(tt_mode_sort, "memory", irms_memory);
 187         INSERT(tt_mode_sort, "internal_boolean", irms_internal_boolean);
 188         INSERT(tt_mode_sort, "reference", irms_reference);
 189         INSERT(tt_mode_sort, "int_number", irms_int_number);
 190         INSERT(tt_mode_sort, "float_number", irms_float_number);
 191
 192         INSERT(tt_segment, "global", IR_SEGMENT_GLOBAL);
 193         INSERT(tt_segment, "thread_local", IR_SEGMENT_THREAD_LOCAL);
 194         INSERT(tt_segment, "constructors", IR_SEGMENT_CONSTRUCTORS);
 195         INSERT(tt_segment, "destructors", IR_SEGMENT_DESTRUCTORS);
 196
 197         INSERT(tt_linkage, "constant", IR_LINKAGE_CONSTANT);
 198         INSERT(tt_linkage, "weak", IR_LINKAGE_WEAK);
 199         INSERT(tt_linkage, "garbage_collect", IR_LINKAGE_GARBAGE_COLLECT);
 200         INSERT(tt_linkage, "merge", IR_LINKAGE_MERGE);
 201         INSERT(tt_linkage, "hidden_user", IR_LINKAGE_HIDDEN_USER);
 202
 203         INSERT(tt_visibility, "local", ir_visibility_local);
 204         INSERT(tt_visibility, "external", ir_visibility_external);
 205         INSERT(tt_visibility, "default", ir_visibility_default);
 206         INSERT(tt_visibility, "private", ir_visibility_private);
 207
 208         INSERTKEYWORD(constirg);
 209         INSERTKEYWORD(entity);
 210         INSERTKEYWORD(irg);
 211         INSERTKEYWORD(mode);
 212         INSERTKEYWORD(modes);
 213         INSERTKEYWORD(type);
 214         INSERTKEYWORD(typegraph);
 215         INSERTKEYWORD(program);
 216         INSERTKEYWORD(segment_type);
 217
 218 #include "gen_irio_lex.inl"
 219
 220         INSERTENUM(tt_align, align_non_aligned);
 221         INSERTENUM(tt_align, align_is_aligned);
 222
 223         INSERTENUM(tt_builtin, ir_bk_trap);
 224         INSERTENUM(tt_builtin, ir_bk_debugbreak);
 225         INSERTENUM(tt_builtin, ir_bk_return_address);
 226         INSERTENUM(tt_builtin, ir_bk_frame_address);
 227         INSERTENUM(tt_builtin, ir_bk_prefetch);
 228         INSERTENUM(tt_builtin, ir_bk_ffs);
 229         INSERTENUM(tt_builtin, ir_bk_clz);
 230         INSERTENUM(tt_builtin, ir_bk_ctz);
 231         INSERTENUM(tt_builtin, ir_bk_popcount);
 232         INSERTENUM(tt_builtin, ir_bk_parity);
 233         INSERTENUM(tt_builtin, ir_bk_bswap);
 234         INSERTENUM(tt_builtin, ir_bk_inport);
 235         INSERTENUM(tt_builtin, ir_bk_outport);
 236         INSERTENUM(tt_builtin, ir_bk_inner_trampoline);
 237
 238         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_NONE);
 239         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_TRUE);
 240         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_FALSE);
 241
 242         INSERTENUM(tt_initializer, IR_INITIALIZER_CONST);
 243         INSERTENUM(tt_initializer, IR_INITIALIZER_TARVAL);
 244         INSERTENUM(tt_initializer, IR_INITIALIZER_NULL);
 245         INSERTENUM(tt_initializer, IR_INITIALIZER_COMPOUND);
 246
 247         INSERTENUM(tt_mode_arithmetic, irma_uninitialized);
 248         INSERTENUM(tt_mode_arithmetic, irma_none);
 249         INSERTENUM(tt_mode_arithmetic, irma_twos_complement);
 250         INSERTENUM(tt_mode_arithmetic, irma_ieee754);
 251
 252         INSERTENUM(tt_pin_state, op_pin_state_floats);
 253         INSERTENUM(tt_pin_state, op_pin_state_pinned);
 254         INSERTENUM(tt_pin_state, op_pin_state_exc_pinned);
 255         INSERTENUM(tt_pin_state, op_pin_state_mem_pinned);
 256
 257         INSERTENUM(tt_type_state, layout_undefined);
 258         INSERTENUM(tt_type_state, layout_fixed);
 259
 260         INSERTENUM(tt_volatility, volatility_non_volatile);
 261         INSERTENUM(tt_volatility, volatility_is_volatile);
 262
 263 #undef INSERTKEYWORD
 264 #undef INSERTENUM
 265 #undef INSERT
 266 }
 267
 268 static const char *get_segment_name(ir_segment_t segment)
 269 {
 270         switch (segment) {
 271         case IR_SEGMENT_GLOBAL:       return "global";
 272         case IR_SEGMENT_THREAD_LOCAL: return "thread_local";
 273         case IR_SEGMENT_CONSTRUCTORS: return "constructors";
 274         case IR_SEGMENT_DESTRUCTORS:  return "destructors";
 275         }
 276         return "INVALID_SEGMENT";
 277 }
 278
 279 static const char *get_visibility_name(ir_visibility visibility)
 280 {
 281         switch (visibility) {
 282         case ir_visibility_local:    return "local";
 283         case ir_visibility_external: return "external";
 284         case ir_visibility_default:  return "default";
 285         case ir_visibility_private:  return "private";
 286         }
 287         return "INVALID_VISIBILITY";
 288 }
 289
 290 /** Returns the according symbol value for the given string and tag, or SYMERROR if none was found. */
 291 static unsigned symbol(const char *str, typetag_t typetag)
 292 {
 293         symbol_t key, *entry;
 294
 295         key.str = str;
 296         key.typetag = typetag;
 297
 298         entry = (symbol_t*)set_find(symtbl, &key, sizeof(key), firm_fnv_hash_str(str) + typetag * 17);
 299         return entry ? entry->code : SYMERROR;
 300 }
 301
 302 static void *get_id(io_env_t *env, long id)
 303 {
 304         id_entry key, *entry;
 305         key.id = id;
 306
 307         entry = (id_entry*)set_find(env->idset, &key, sizeof(key), (unsigned) id);
 308         return entry ? entry->elem : NULL;
 309 }
 310
 311 static void set_id(io_env_t *env, long id, void *elem)
 312 {
 313         id_entry key;
 314         key.id = id;
 315         key.elem = elem;
 316         set_insert(env->idset, &key, sizeof(key), (unsigned) id);
 317 }
 318
 319 static void write_long(io_env_t *env, long value)
 320 {
 321         fprintf(env->file, "%ld ", value);
 322 }
 323
 324 static void write_int(io_env_t *env, int value)
 325 {
 326         fprintf(env->file, "%d ", value);
 327 }
 328
 329 static void write_unsigned(io_env_t *env, unsigned value)
 330 {
 331         fprintf(env->file, "%u ", value);
 332 }
 333
 334 static void write_entity_ref(io_env_t *env, ir_entity *entity)
 335 {
 336         write_long(env, get_entity_nr(entity));
 337 }
 338
 339 static void write_type_ref(io_env_t *env, ir_type *type)
 340 {
 341         write_long(env, get_type_nr(type));
 342 }
 343
 344 static void write_string(io_env_t *env, const char *string)
 345 {
 346         const char *c;
 347         fputc('"', env->file);
 348         for (c = string; *c != '\0'; ++c) {
 349                 switch (*c) {
 350                 case '\n':
 351                         fputc('\\', env->file);
 352                         fputc('n', env->file);
 353                         break;
 354                 case '"':
 355                 case '\\':
 356                         fputc('\\', env->file);
 357                         /* FALLTHROUGH */
 358                 default:
 359                         fputc(*c, env->file);
 360                         break;
 361                 }
 362         }
 363         fputc('"', env->file);
 364 }
 365
 366 static void write_ident(io_env_t *env, ident *id)
 367 {
 368         write_string(env, get_id_str(id));
 369         fputc(' ', env->file);
 370 }
 371
 372 static void write_ident_null(io_env_t *env, ident *id)
 373 {
 374         if (id == NULL) {
 375                 fputs("NULL ", env->file);
 376         } else {
 377                 write_ident(env, id);
 378         }
 379 }
 380
 381 static void write_mode(io_env_t *env, ir_mode *mode)
 382 {
 383         write_string(env, get_mode_name(mode));
 384         fputc(' ', env->file);
 385 }
 386
 387 static void write_tarval(io_env_t *env, ir_tarval *tv)
 388 {
 389         char buf[1024];
 390         write_mode(env, get_tarval_mode(tv));
 391         tarval_snprintf(buf, sizeof(buf), tv);
 392         fputs(buf, env->file);
 393         fputc(' ', env->file);
 394 }
 395
 396 static void write_align(io_env_t *env, ir_align align)
 397 {
 398         fputs(get_align_name(align), env->file);
 399         fputc(' ', env->file);
 400 }
 401
 402 static void write_builtin_kind(io_env_t *env, ir_node *irn)
 403 {
 404         fputs(get_builtin_kind_name(get_Builtin_kind(irn)), env->file);
 405         fputc(' ', env->file);
 406 }
 407
 408 static void write_cond_jmp_predicate(io_env_t *env, ir_node *irn)
 409 {
 410         fputs(get_cond_jmp_predicate_name(get_Cond_jmp_pred(irn)), env->file);
 411         fputc(' ', env->file);
 412 }
 413
 414 static void write_list_begin(io_env_t *env)
 415 {
 416         fputs("[", env->file);
 417 }
 418
 419 static void write_list_end(io_env_t *env)
 420 {
 421         fputs("] ", env->file);
 422 }
 423
 424 static void write_initializer(io_env_t *env, ir_initializer_t *ini)
 425 {
 426         FILE *f = env->file;
 427         ir_initializer_kind_t ini_kind = get_initializer_kind(ini);
 428
 429         fputs(get_initializer_kind_name(ini_kind), f);
 430         fputc(' ', f);
 431
 432         switch (ini_kind) {
 433         case IR_INITIALIZER_CONST:
 434                 write_long(env, get_irn_node_nr(get_initializer_const_value(ini)));
 435                 break;
 436
 437         case IR_INITIALIZER_TARVAL:
 438                 write_tarval(env, get_initializer_tarval_value(ini));
 439                 break;
 440
 441         case IR_INITIALIZER_NULL:
 442                 break;
 443
 444         case IR_INITIALIZER_COMPOUND: {
 445                 size_t i, n = get_initializer_compound_n_entries(ini);
 446                 ir_fprintf(f, "%zu ", n);
 447                 for (i = 0; i < n; ++i)
 448                         write_initializer(env, get_initializer_compound_value(ini, i));
 449                 break;
 450         }
 451
 452         default:
 453                 panic("Unknown initializer kind");
 454         }
 455 }
 456
 457 static void write_pin_state(io_env_t *env, ir_node *irn)
 458 {
 459         fputs(get_op_pin_state_name(get_irn_pinned(irn)), env->file);
 460         fputc(' ', env->file);
 461 }
 462
 463 static void write_volatility(io_env_t *env, ir_volatility vol)
 464 {
 465         fputs(get_volatility_name(vol), env->file);
 466         fputc(' ', env->file);
 467 }
 468
 469 static void export_type_common(io_env_t *env, ir_type *tp)
 470 {
 471         fprintf(env->file, "\ttype %ld %s %u %u %s %u ",
 472                 get_type_nr(tp),
 473                 get_type_tpop_name(tp),
 474                 get_type_size_bytes(tp),
 475                 get_type_alignment_bytes(tp),
 476                 get_type_state_name(get_type_state(tp)),
 477                 tp->flags);
 478 }
 479
 480 static void export_type_pre(io_env_t *env, ir_type *tp)
 481 {
 482         FILE *f = env->file;
 483
 484         /* skip types to be handled by post walker */
 485         switch (get_type_tpop_code(tp)) {
 486         case tpo_array:
 487         case tpo_method:
 488         case tpo_pointer:
 489                 return;
 490         default:
 491                 break;
 492         }
 493
 494         export_type_common(env, tp);
 495
 496         switch (get_type_tpop_code(tp)) {
 497         case tpo_uninitialized:
 498                 panic("invalid type found");
 499
 500         case tpo_class:
 501                 write_ident_null(env, get_compound_ident(tp));
 502                 break;
 503
 504         case tpo_primitive:
 505                 write_mode(env, get_type_mode(tp));
 506                 break;
 507
 508         case tpo_union:
 509         case tpo_struct:
 510         case tpo_enumeration:
 511                 write_ident_null(env, get_compound_ident(tp));
 512                 break;
 513
 514         case tpo_array:
 515         case tpo_method:
 516         case tpo_pointer:
 517         case tpo_code:
 518         case tpo_none:
 519         case tpo_unknown:
 520                 break;
 521         }
 522         fputc('\n', f);
 523 }
 524
 525 static void export_type_post(io_env_t *env, ir_type *tp)
 526 {
 527         FILE *f = env->file;
 528         size_t i;
 529
 530         /* skip types already handled by pre walker */
 531         switch (get_type_tpop_code(tp)) {
 532         case tpo_class:
 533         case tpo_primitive:
 534         case tpo_struct:
 535         case tpo_union:
 536         case tpo_unknown:
 537         case tpo_uninitialized:
 538         case tpo_code:
 539         case tpo_none:
 540                 return;
 541         case tpo_array:
 542         case tpo_method:
 543         case tpo_pointer:
 544         case tpo_enumeration:
 545                 break;
 546         }
 547
 548         export_type_common(env, tp);
 549
 550         switch (get_type_tpop_code(tp)) {
 551         case tpo_array: {
 552                 size_t n = get_array_n_dimensions(tp);
 553                 ir_fprintf(f, "%zu %ld ", n, get_type_nr(get_array_element_type(tp)));
 554                 for (i = 0; i < n; i++) {
 555                         ir_node *lower = get_array_lower_bound(tp, i);
 556                         ir_node *upper = get_array_upper_bound(tp, i);
 557
 558                         if (is_Const(lower))
 559                                 write_long(env, get_tarval_long(get_Const_tarval(lower)));
 560                         else
 561                                 panic("Lower array bound is not constant");
 562
 563                         if (is_Const(upper))
 564                                 write_long(env, get_tarval_long(get_Const_tarval(upper)));
 565                         else if (is_Unknown(upper))
 566                                 fputs("unknown ", f);
 567                         else
 568                                 panic("Upper array bound is not constant");
 569                 }
 570                 break;
 571         }
 572
 573         case tpo_method: {
 574                 size_t nparams  = get_method_n_params(tp);
 575                 size_t nresults = get_method_n_ress(tp);
 576                 ir_fprintf(f, "%u %u %zu %zu ", get_method_calling_convention(tp),
 577                         get_method_additional_properties(tp), nparams, nresults);
 578                 for (i = 0; i < nparams; i++)
 579                         write_long(env, get_type_nr(get_method_param_type(tp, i)));
 580                 for (i = 0; i < nresults; i++)
 581                         write_long(env, get_type_nr(get_method_res_type(tp, i)));
 582                 ir_fprintf(f, "%u ", get_method_variadicity(tp));
 583                 break;
 584         }
 585
 586         case tpo_pointer:
 587                 write_mode(env, get_type_mode(tp));
 588                 write_long(env, get_type_nr(get_pointer_points_to_type(tp)));
 589                 break;
 590
 591         case tpo_enumeration:
 592                 fprintf(stderr, "Enumeration type not handled yet by exporter\n");
 593                 break;
 594
 595         default:
 596                 printf("export_type: Unknown type code \"%s\".\n",
 597                        get_type_tpop_name(tp));
 598                 break;
 599         }
 600         fputc('\n', f);
 601 }
 602
 603 static void export_entity(io_env_t *env, ir_entity *ent)
 604 {
 605         FILE          *file       = env->file;
 606         ir_type       *owner      = get_entity_owner(ent);
 607         ir_visibility  visibility = get_entity_visibility(ent);
 608         ir_linkage     linkage    = get_entity_linkage(ent);
 609
 610         /* we don't dump array_element_ent entities. They're a strange concept
 611          * and lead to cycles in type_graph.
 612          */
 613         if (is_Array_type(owner))
 614                 return;
 615
 616         fprintf(env->file, "\tentity ");
 617         write_long(env, get_entity_nr(ent));
 618         write_ident_null(env, get_entity_ident(ent));
 619         if (!entity_has_ld_ident(ent)) {
 620                 write_ident_null(env, NULL);
 621         } else {
 622                 write_ident_null(env, get_entity_ld_ident(ent));
 623         }
 624
 625         /* visibility + linkage */
 626         if (visibility != ir_visibility_default) {
 627                 fprintf(file, "%s ", get_visibility_name(visibility));
 628         }
 629         if (linkage & IR_LINKAGE_CONSTANT)
 630                 fputs("constant ", file);
 631         if (linkage & IR_LINKAGE_WEAK)
 632                 fputs("weak ", file);
 633         if (linkage & IR_LINKAGE_GARBAGE_COLLECT)
 634                 fputs("garbage_collect ", file);
 635         if (linkage & IR_LINKAGE_MERGE)
 636                 fputs("merge ", file);
 637         if (linkage & IR_LINKAGE_HIDDEN_USER)
 638                 fputs("hidden_user ", file);
 639
 640         fprintf(file, "%ld %ld %d %u %d %s ",
 641                         get_type_nr(get_entity_type(ent)),
 642                         get_type_nr(owner),
 643                         get_entity_offset(ent),
 644                         (unsigned) get_entity_offset_bits_remainder(ent),
 645                         is_entity_compiler_generated(ent),
 646                         get_volatility_name(get_entity_volatility(ent)));
 647
 648         if (ent->initializer != NULL) {
 649                 fputs("initializer ", env->file);
 650                 write_initializer(env, get_entity_initializer(ent));
 651         } else if (entity_has_compound_ent_values(ent)) {
 652                 size_t i, n = get_compound_ent_n_values(ent);
 653                 fputs("compoundgraph ", env->file);
 654                 ir_fprintf(env->file, "%zu ", n);
 655                 for (i = 0; i < n; i++) {
 656                         ir_entity *member = get_compound_ent_value_member(ent, i);
 657                         ir_node   *irn    = get_compound_ent_value(ent, i);
 658                         fprintf(env->file, "%ld %ld ", get_entity_nr(member), get_irn_node_nr(irn));
 659                 }
 660         } else {
 661                 fputs("none", env->file);
 662         }
 663
 664         fputc('\n', env->file);
 665 }
 666
 667 static void export_type_or_ent_pre(type_or_ent tore, void *ctx)
 668 {
 669         io_env_t *env = (io_env_t *) ctx;
 670         if (get_kind(tore.typ) == k_type)
 671                 export_type_pre(env, tore.typ);
 672 }
 673
 674 static void export_type_or_ent_post(type_or_ent tore, void *ctx)
 675 {
 676         io_env_t *env = (io_env_t *) ctx;
 677
 678         switch (get_kind(tore.ent)) {
 679         case k_entity:
 680                 export_entity(env, tore.ent);
 681                 break;
 682
 683         case k_type:
 684                 export_type_post(env, tore.typ);
 685                 break;
 686
 687         default:
 688                 panic("export_type_or_ent_post: Unknown type or entity.");
 689         }
 690 }
 691
 692 static void export_ASM(io_env_t *env, ir_node *node)
 693 {
 694         ir_asm_constraint *input_constraints    = get_ASM_input_constraints(node);
 695         ir_asm_constraint *output_constraints   = get_ASM_output_constraints(node);
 696         ident            **clobbers             = get_ASM_clobbers(node);
 697         int                n_input_constraints  = get_ASM_n_input_constraints(node);
 698         int                n_output_constraints = get_ASM_n_output_constraints(node);
 699         int                n_clobbers           = get_ASM_n_clobbers(node);
 700         int i;
 701
 702         write_ident(env, get_ASM_text(node));
 703         write_list_begin(env);
 704         for (i = 0; i < n_input_constraints; ++i) {
 705                 const ir_asm_constraint *constraint = &input_constraints[i];
 706                 write_unsigned(env, constraint->pos);
 707                 write_ident(env, constraint->constraint);
 708                 write_mode(env, constraint->mode);
 709         }
 710         write_list_end(env);
 711
 712         write_list_begin(env);
 713         for (i = 0; i < n_output_constraints; ++i) {
 714                 const ir_asm_constraint *constraint = &output_constraints[i];
 715                 write_unsigned(env, constraint->pos);
 716                 write_ident(env, constraint->constraint);
 717                 write_mode(env, constraint->mode);
 718         }
 719         write_list_end(env);
 720
 721         write_list_begin(env);
 722         for (i = 0; i < n_clobbers; ++i) {
 723                 ident *clobber = clobbers[i];
 724                 write_ident(env, clobber);
 725         }
 726         write_list_end(env);
 727 }
 728
 729 /**
 730  * Walker: exports every node.
 731  */
 732 static void export_node(ir_node *irn, void *ctx)
 733 {
 734         io_env_t *env = (io_env_t *) ctx;
 735         int i, n;
 736         unsigned opcode = get_irn_opcode(irn);
 737
 738         if (env->ignoreblocks && opcode == iro_Block)
 739                 return;
 740
 741         fprintf(env->file, "\t%s ", get_irn_opname(irn));
 742         write_long(env, get_irn_node_nr(irn));
 743
 744         write_list_begin(env);
 745         n = get_irn_arity(irn);
 746         if (!is_Block(irn)) {
 747                 ir_node *block = get_nodes_block(irn);
 748                 write_long(env, get_irn_node_nr(block));
 749         }
 750
 751         for (i = 0; i < n; i++) {
 752                 ir_node *pred = get_irn_n(irn, i);
 753                 if (pred == NULL) {
 754                         /* Anchor node may have NULL predecessors */
 755                         assert(is_Anchor(irn));
 756                         fputs("-1 ", env->file);
 757                 } else {
 758                         write_long(env, get_irn_node_nr(pred));
 759                 }
 760         }
 761         write_list_end(env);
 762
 763         fputs("{ ", env->file);
 764
 765         switch (opcode) {
 766         case iro_Start:
 767         case iro_End:
 768         case iro_Block:
 769         case iro_Anchor:
 770                 break;
 771         case iro_SymConst:
 772                 /* TODO: only symconst_addr_ent implemented yet */
 773                 assert(get_SymConst_kind(irn) == symconst_addr_ent);
 774                 fprintf(env->file, "%ld ", get_entity_nr(get_SymConst_entity(irn)));
 775                 write_mode(env, get_irn_mode(irn));
 776                 break;
 777         case iro_Proj:
 778                 write_mode(env, get_irn_mode(irn));
 779                 fprintf(env->file, "%ld ", get_Proj_proj(irn));
 780                 break;
 781         case iro_ASM:
 782                 export_ASM(env, irn);
 783                 break;
 784 #include "gen_irio_export.inl"
 785         default:
 786                 panic("no export code for node %+F\n", irn);
 787         }
 788         fputs("}\n", env->file);
 789 }
 790
 791 static const char *get_mode_sort_name(ir_mode_sort sort)
 792 {
 793         switch (sort) {
 794         case irms_auxiliary:        return "auxiliary";
 795         case irms_control_flow:     return "control_flow";
 796         case irms_memory:           return "memory";
 797         case irms_internal_boolean: return "internal_boolean";
 798         case irms_reference:        return "reference";
 799         case irms_int_number:       return "int_number";
 800         case irms_float_number:     return "float_number";
 801         }
 802         panic("invalid mode sort found");
 803 }
 804
 805 static void export_modes(io_env_t *env)
 806 {
 807         size_t i, n_modes = get_irp_n_modes();
 808
 809         fputs("modes {\n", env->file);
 810
 811         for (i = 0; i < n_modes; i++) {
 812                 ir_mode *mode = get_irp_mode(i);
 813                 switch (get_mode_sort(mode)) {
 814                 case irms_auxiliary:
 815                 case irms_control_flow:
 816                 case irms_memory:
 817                 case irms_internal_boolean:
 818                         /* skip "internal" modes, which may not be user defined */
 819                         continue;
 820                 default:
 821                         break;
 822                 }
 823
 824                 fprintf(env->file, "\tmode ");
 825                 write_string(env, get_mode_name(mode));
 826                 fprintf(env->file, "%s %u %d %s %u ",
 827                         get_mode_sort_name(get_mode_sort(mode)),
 828                         get_mode_size_bits(mode), get_mode_sign(mode),
 829                         get_mode_arithmetic_name(get_mode_arithmetic(mode)),
 830                         get_mode_modulo_shift(mode));
 831                 if (mode_is_reference(mode)) {
 832                         write_mode(env, get_reference_mode_signed_eq(mode));
 833                         write_mode(env, get_reference_mode_unsigned_eq(mode));
 834                         write_int(env, (mode == mode_P ? 1 : 0));
 835                 }
 836                 fputc('\n', env->file);
 837         }
 838
 839         fputs("}\n", env->file);
 840 }
 841
 842 static void export_program(io_env_t *env)
 843 {
 844         FILE         *f = env->file;
 845         ir_segment_t  s;
 846
 847         fputs("\nprogram {\n", f);
 848         if (irp_prog_name_is_set()) {
 849                 fprintf(f, "\tname ");
 850                 write_string(env, get_irp_name());
 851                 fputc('\n', f);
 852         }
 853
 854         for (s = IR_SEGMENT_FIRST; s <= IR_SEGMENT_LAST; ++s) {
 855                 ir_type *segment_type = get_segment_type(s);
 856                 fprintf(f, "\tsegment_type %s ", get_segment_name(s));
 857                 if (segment_type == NULL) {
 858                         fputs(" NULL\n", f);
 859                 } else {
 860                         write_long(env, get_type_nr(segment_type));
 861                         fputc('\n', f);
 862                 }
 863         }
 864         fputs("}\n", f);
 865 }
 866
 867 void ir_export(const char *filename)
 868 {
 869         FILE *file = fopen(filename, "wt");
 870         if (file == NULL) {
 871                 perror(filename);
 872                 return;
 873         }
 874
 875         ir_export_file(file, filename);
 876         fclose(file);
 877 }
 878
 879 /* Exports the whole irp to the given file in a textual form. */
 880 void ir_export_file(FILE *file, const char *outputname)
 881 {
 882         io_env_t env;
 883         size_t i, n_irgs = get_irp_n_irgs();
 884
 885         (void) outputname;
 886         env.file = file;
 887
 888         export_modes(&env);
 889
 890         fputs("\ntypegraph {\n", env.file);
 891         type_walk_prog(export_type_or_ent_pre, export_type_or_ent_post, &env);
 892         fputs("}\n", env.file);
 893
 894         for (i = 0; i < n_irgs; i++) {
 895                 ir_graph *irg       = get_irp_irg(i);
 896
 897                 fprintf(env.file, "\nirg %ld %ld {\n",
 898                         get_entity_nr(get_irg_entity(irg)),
 899                         get_type_nr(get_irg_frame_type(irg)));
 900
 901                 env.ignoreblocks = 0;
 902                 irg_block_walk_graph(irg, NULL, export_node, &env);
 903
 904                 env.ignoreblocks = 1;
 905                 irg_walk_anchors(irg, NULL, export_node, &env);
 906
 907                 fputs("}\n", env.file);
 908         }
 909
 910         fprintf(env.file, "\nconstirg %ld {\n", get_irn_node_nr(get_const_code_irg()->current_block));
 911
 912         walk_const_code(NULL, export_node, &env);
 913         fputs("}\n", env.file);
 914
 915         export_program(&env);
 916 }
 917
 918 /* Exports the given irg to the given file. */
 919 void ir_export_irg(ir_graph *irg, FILE *file, const char *outputname)
 920 {
 921         io_env_t env;
 922
 923         (void) outputname;
 924         env.file = file;
 925
 926         export_modes(&env);
 927
 928         fputs("typegraph {\n", env.file);
 929
 930         type_walk_irg(irg, export_type_or_ent_pre, export_type_or_ent_post, &env);
 931
 932         fprintf(env.file, "}\n\nirg %ld {\n", get_entity_nr(get_irg_entity(irg)));
 933
 934         env.ignoreblocks = 0;
 935         irg_block_walk_graph(irg, NULL, export_node, &env);
 936
 937         env.ignoreblocks = 1;
 938         irg_walk_anchors(irg, NULL, export_node, &env);
 939
 940         /* TODO: Only output needed constants */
 941         fprintf(env.file, "}\n\nconstirg %ld {\n", get_irn_node_nr(get_const_code_irg()->current_block));
 942         walk_const_code(NULL, export_node, &env);
 943         fputs("}\n", env.file);
 944 }
 945
 946 static void read_c(io_env_t *env)
 947 {
 948         int c = fgetc(env->file);
 949         env->c = c;
 950         if (c == '\n')
 951                 env->line++;
 952 }
 953
 954 /** Returns the first non-whitespace character or EOF. **/
 955 static void skip_ws(io_env_t *env)
 956 {
 957         while (true) {
 958                 switch (env->c) {
 959                 case ' ':
 960                 case '\t':
 961                 case '\n':
 962                 case '\r':
 963                         read_c(env);
 964                         continue;
 965
 966                 default:
 967                         return;
 968                 }
 969         }
 970 }
 971
 972 static void skip_to(io_env_t *env, char to_ch)
 973 {
 974         while (env->c != to_ch && env->c != EOF) {
 975                 read_c(env);
 976         }
 977 }
 978
 979 static int expect_char(io_env_t *env, char ch)
 980 {
 981         skip_ws(env);
 982         if (env->c != ch) {
 983                 parse_error(env, "Unexpected char '%c', expected '%c'\n",
 984                             env->c, ch);
 985                 return 0;
 986         }
 987         read_c(env);
 988         return 1;
 989 }
 990
 991 #define EXPECT(c) if (expect_char(env, (c))) {} else return 0
 992
 993 static char *read_word(io_env_t *env)
 994 {
 995         skip_ws(env);
 996
 997         assert(obstack_object_size(&env->obst) == 0);
 998         while (true) {
 999                 int c = env->c;
1000                 switch (c) {
1001                 case EOF:
1002                 case ' ':
1003                 case '\t':
1004                 case '\n':
1005                 case '\r':
1006                         goto endofword;
1007
1008                 default:
1009                         obstack_1grow(&env->obst, c);
1010                         break;
1011                 }
1012                 read_c(env);
1013         }
1014
1015 endofword:
1016         obstack_1grow(&env->obst, '\0');
1017         return (char*)obstack_finish(&env->obst);
1018 }
1019
1020 static char *read_string(io_env_t *env)
1021 {
1022         skip_ws(env);
1023         if (env->c != '"') {
1024                 parse_error(env, "Expected string, got '%c'\n", env->c);
1025                 exit(1);
1026         }
1027         read_c(env);
1028
1029         assert(obstack_object_size(&env->obst) == 0);
1030         while (env->c != '"') {
1031                 if (env->c == EOF) {
1032                         parse_error(env, "Unexpected EOF while parsing string\n");
1033                         exit(1);
1034                 }
1035
1036                 if (env->c == '\\') {
1037                         read_c(env);
1038                         switch (env->c) {
1039                         case 'n':
1040                                 obstack_1grow(&env->obst, '\n');
1041                                 break;
1042                         case '"':
1043                         case '\\':
1044                                 obstack_1grow(&env->obst, env->c);
1045                                 break;
1046                         default:
1047                                 parse_error(env, "Unknown escape sequence '\\%c'\n", env->c);
1048                                 exit(1);
1049                         }
1050                 } else {
1051                         obstack_1grow(&env->obst, env->c);
1052                 }
1053                 read_c(env);
1054         }
1055         read_c(env);
1056         obstack_1grow(&env->obst, 0);
1057
1058         return (char*)obstack_finish(&env->obst);
1059 }
1060
1061 static ident *read_ident(io_env_t *env)
1062 {
1063         char  *str = read_string(env);
1064         ident *res = new_id_from_str(str);
1065         obstack_free(&env->obst, str);
1066         return res;
1067 }
1068
1069 /*
1070  * reads a "quoted string" or alternatively the token NULL
1071  */
1072 static char *read_string_null(io_env_t *env)
1073 {
1074         skip_ws(env);
1075         if (env->c == 'N') {
1076                 char *str = read_word(env);
1077                 if (strcmp(str, "NULL") == 0) {
1078                         obstack_free(&env->obst, str);
1079                         return NULL;
1080                 }
1081         } else if (env->c == '"') {
1082                 return read_string(env);
1083         }
1084
1085         parse_error(env, "Expected \"string\" or NULL\n");
1086         exit(1);
1087 }
1088
1089 static ident *read_ident_null(io_env_t *env)
1090 {
1091         ident *res;
1092         char  *str = read_string_null(env);
1093         if (str == NULL)
1094                 return NULL;
1095
1096         res = new_id_from_str(str);
1097         obstack_free(&env->obst, str);
1098         return res;
1099 }
1100
1101 static long read_long(io_env_t *env)
1102 {
1103         long  result;
1104         char *str;
1105
1106         skip_ws(env);
1107         if (!isdigit(env->c) && env->c != '-') {
1108                 parse_error(env, "Expected number, got '%c'\n", env->c);
1109                 exit(1);
1110         }
1111
1112         assert(obstack_object_size(&env->obst) == 0);
1113         do {
1114                 obstack_1grow(&env->obst, env->c);
1115                 read_c(env);
1116         } while (isdigit(env->c));
1117         obstack_1grow(&env->obst, 0);
1118
1119         str = (char*)obstack_finish(&env->obst);
1120         result = atol(str);
1121         obstack_free(&env->obst, str);
1122
1123         return result;
1124 }
1125
1126 static int read_int(io_env_t *env)
1127 {
1128         return (int) read_long(env);
1129 }
1130
1131 static unsigned read_unsigned(io_env_t *env)
1132 {
1133         return (unsigned) read_long(env);
1134 }
1135
1136 static size_t read_size_t(io_env_t *env)
1137 {
1138         /* FIXME */
1139         return (size_t) read_unsigned(env);
1140 }
1141
1142 static void expect_list_begin(io_env_t *env)
1143 {
1144         skip_ws(env);
1145         if (env->c != '[') {
1146                 parse_error(env, "Expected list, got '%c'\n", env->c);
1147                 exit(1);
1148         }
1149         read_c(env);
1150 }
1151
1152 static bool list_has_next(io_env_t *env)
1153 {
1154         if (feof(env->file)) {
1155                 parse_error(env, "Unexpected EOF while reading list");
1156                 exit(1);
1157         }
1158         skip_ws(env);
1159         if (env->c == ']') {
1160                 read_c(env);
1161                 return false;
1162         }
1163
1164         return true;
1165 }
1166
1167 static ir_node *get_node_or_null(io_env_t *env, long nodenr)
1168 {
1169         ir_node *node = (ir_node *) get_id(env, nodenr);
1170         if (node && node->kind != k_ir_node) {
1171                 panic("Irn ID %ld collides with something else in line %d\n",
1172                       nodenr, env->line);
1173         }
1174         return node;
1175 }
1176
1177 static ir_node *get_node_or_dummy(io_env_t *env, long nodenr)
1178 {
1179         ir_node *node = get_node_or_null(env, nodenr);
1180         if (node == NULL) {
1181                 node = new_r_Dummy(env->irg, mode_X);
1182                 set_id(env, nodenr, node);
1183         }
1184         return node;
1185 }
1186
1187 static ir_type *get_type(io_env_t *env, long typenr)
1188 {
1189         ir_type *type = (ir_type *) get_id(env, typenr);
1190         if (type == NULL)
1191                 panic("unknown type: %ld in line %d\n", typenr, env->line);
1192         else if (type->kind != k_type)
1193                 panic("type ID %ld collides with something else in line %d\n",
1194                       typenr, env->line);
1195         return type;
1196 }
1197
1198 static ir_type *read_type(io_env_t *env)
1199 {
1200         return get_type(env, read_long(env));
1201 }
1202
1203 static ir_entity *get_entity(io_env_t *env, long entnr)
1204 {
1205         ir_entity *entity = (ir_entity *) get_id(env, entnr);
1206         if (entity == NULL) {
1207                 parse_error(env, "unknown entity: %ld\n", entnr);
1208                 exit(1);
1209         } else if (entity->kind != k_entity) {
1210                 panic("Entity ID %ld collides with something else in line %d\n",
1211                       entnr, env->line);
1212         }
1213
1214         return entity;
1215 }
1216
1217 static ir_entity *read_entity(io_env_t *env)
1218 {
1219         return get_entity(env, read_long(env));
1220 }
1221
1222 static ir_mode *read_mode(io_env_t *env)
1223 {
1224         char *str = read_string(env);
1225         size_t i, n;
1226
1227         n = get_irp_n_modes();
1228         for (i = 0; i < n; i++) {
1229                 ir_mode *mode = get_irp_mode(i);
1230                 if (strcmp(str, get_mode_name(mode)) == 0) {
1231                         obstack_free(&env->obst, str);
1232                         return mode;
1233                 }
1234         }
1235
1236         parse_error(env, "unknown mode \"%s\"\n", str);
1237         exit(1);
1238 }
1239
1240 static const char *get_typetag_name(typetag_t typetag)
1241 {
1242         switch (typetag) {
1243         case tt_align:              return "align";
1244         case tt_allocation:         return "allocation";
1245         case tt_builtin:            return "builtin kind";
1246         case tt_cond_jmp_predicate: return "cond_jmp_predicate";
1247         case tt_initializer:        return "initializer kind";
1248         case tt_iro:                return "opcode";
1249         case tt_keyword:            return "keyword";
1250         case tt_linkage:            return "linkage";
1251         case tt_mode_arithmetic:    return "mode_arithmetic";
1252         case tt_mode_sort:          return "mode_sort";
1253         case tt_pin_state:          return "pin state";
1254         case tt_segment:            return "segment";
1255         case tt_tpo:                return "type";
1256         case tt_type_state:         return "type state";
1257         case tt_volatility:         return "volatility";
1258         case tt_visibility:         return "visibility";
1259         }
1260         return "<UNKNOWN>";
1261 }
1262
1263 /**
1264  * Read and decode an enum constant.
1265  */
1266 static unsigned read_enum(io_env_t *env, typetag_t typetag)
1267 {
1268         char     *str  = read_word(env);
1269         unsigned  code = symbol(str, typetag);
1270
1271         if (code != SYMERROR) {
1272                 obstack_free(&env->obst, str);
1273                 return code;
1274         }
1275
1276         parse_error(env, "invalid %s: \"%s\"\n", get_typetag_name(typetag), str);
1277         return 0;
1278 }
1279
1280 #define read_align(env)              ((ir_align)              read_enum(env, tt_align))
1281 #define read_allocation(env)         ((ir_allocation)         read_enum(env, tt_allocation))
1282 #define read_builtin_kind(env)       ((ir_builtin_kind)       read_enum(env, tt_builtin))
1283 #define read_cond_jmp_predicate(env) ((cond_jmp_predicate)    read_enum(env, tt_cond_jmp_predicate))
1284 #define read_initializer_kind(env)   ((ir_initializer_kind_t) read_enum(env, tt_initializer))
1285 #define read_mode_arithmetic(env)    ((ir_mode_arithmetic)    read_enum(env, tt_mode_arithmetic))
1286 #define read_peculiarity(env)        ((ir_peculiarity)        read_enum(env, tt_peculiarity))
1287 #define read_pin_state(env)          ((op_pin_state)          read_enum(env, tt_pin_state))
1288 #define read_type_state(env)         ((ir_type_state)         read_enum(env, tt_type_state))
1289 #define read_variability(env)        ((ir_variability)        read_enum(env, tt_variability))
1290 #define read_volatility(env)         ((ir_volatility)         read_enum(env, tt_volatility))
1291
1292 static ir_tarval *read_tv(io_env_t *env)
1293 {
1294         ir_mode   *tvmode = read_mode(env);
1295         char      *str    = read_word(env);
1296         ir_tarval *tv     = new_tarval_from_str(str, strlen(str), tvmode);
1297         obstack_free(&env->obst, str);
1298
1299         return tv;
1300 }
1301
1302 static ir_initializer_t *read_initializer(io_env_t *env)
1303 {
1304         ir_initializer_kind_t ini_kind = read_initializer_kind(env);
1305
1306         switch (ini_kind) {
1307         case IR_INITIALIZER_CONST: {
1308                 ir_node *irn = get_node_or_dummy(env, read_long(env));
1309                 return create_initializer_const(irn);
1310         }
1311
1312         case IR_INITIALIZER_TARVAL:
1313                 return create_initializer_tarval(read_tv(env));
1314
1315         case IR_INITIALIZER_NULL:
1316                 return get_initializer_null();
1317
1318         case IR_INITIALIZER_COMPOUND: {
1319                 size_t i, n = read_size_t(env);
1320                 ir_initializer_t *ini = create_initializer_compound(n);
1321                 for (i = 0; i < n; i++) {
1322                         ir_initializer_t *curini = read_initializer(env);
1323                         set_initializer_compound_value(ini, i, curini);
1324                 }
1325                 return ini;
1326         }
1327
1328         default:
1329                 panic("Unknown initializer kind");
1330         }
1331 }
1332
1333
1334 /** Reads a type description and remembers it by its id. */
1335 static void import_type(io_env_t *env)
1336 {
1337         int            i;
1338         ir_type       *type;
1339         long           typenr = read_long(env);
1340         tp_opcode      tpop   = (tp_opcode) read_enum(env, tt_tpo);
1341         unsigned       size   = (unsigned) read_long(env);
1342         unsigned       align  = (unsigned) read_long(env);
1343         ir_type_state  state  = read_type_state(env);
1344         unsigned       flags  = (unsigned) read_long(env);
1345
1346         switch (tpop) {
1347         case tpo_array: {
1348                 int ndims = (int) read_long(env);
1349                 long elemtypenr = read_long(env);
1350                 ir_type *elemtype = get_type(env, elemtypenr);
1351
1352                 type = new_type_array(ndims, elemtype);
1353                 for (i = 0; i < ndims; i++) {
1354                         char *str = read_word(env);
1355                         if (strcmp(str, "unknown") != 0) {
1356                                 long lowerbound = atol(str);
1357                                 set_array_lower_bound_int(type, i, lowerbound);
1358                         }
1359                         obstack_free(&env->obst, str);
1360
1361                         str = read_word(env);
1362                         if (strcmp(str, "unknown") != 0) {
1363                                 long upperbound = atol(str);
1364                                 set_array_upper_bound_int(type, i, upperbound);
1365                         }
1366                         obstack_free(&env->obst, str);
1367                 }
1368                 set_type_size_bytes(type, size);
1369                 break;
1370         }
1371
1372         case tpo_class: {
1373                 ident *id = read_ident_null(env);
1374
1375                 if (typenr == (long) IR_SEGMENT_GLOBAL)
1376                         type = get_glob_type();
1377                 else
1378                         type = new_type_class(id);
1379                 set_type_size_bytes(type, size);
1380                 break;
1381         }
1382
1383         case tpo_method: {
1384                 unsigned                  callingconv = (unsigned) read_long(env);
1385                 mtp_additional_properties addprops    = (mtp_additional_properties) read_long(env);
1386                 int nparams          = (int)      read_long(env);
1387                 int nresults         = (int)      read_long(env);
1388                 int variadicity;
1389
1390                 type = new_type_method(nparams, nresults);
1391
1392                 for (i = 0; i < nparams; i++) {
1393                         long ptypenr = read_long(env);
1394                         ir_type *paramtype = get_type(env, ptypenr);
1395
1396                         set_method_param_type(type, i, paramtype);
1397                 }
1398                 for (i = 0; i < nresults; i++) {
1399                         long ptypenr = read_long(env);
1400                         ir_type *restype = get_type(env, ptypenr);
1401
1402                         set_method_res_type(type, i, restype);
1403                 }
1404
1405                 variadicity = (int) read_long(env);
1406                 set_method_variadicity(type, variadicity);
1407
1408                 set_method_calling_convention(type, callingconv);
1409                 set_method_additional_properties(type, addprops);
1410                 break;
1411         }
1412
1413         case tpo_pointer: {
1414                 ir_mode *mode     = read_mode(env);
1415                 ir_type *pointsto = get_type(env, read_long(env));
1416                 type = new_type_pointer(pointsto);
1417                 set_type_mode(type, mode);
1418                 break;
1419         }
1420
1421         case tpo_primitive: {
1422                 ir_mode *mode = read_mode(env);
1423                 type = new_type_primitive(mode);
1424                 break;
1425         }
1426
1427         case tpo_struct: {
1428                 ident *id = read_ident_null(env);
1429                 type = new_type_struct(id);
1430                 set_type_size_bytes(type, size);
1431                 break;
1432         }
1433
1434         case tpo_union: {
1435                 ident *id = read_ident_null(env);
1436                 type = new_type_union(id);
1437                 set_type_size_bytes(type, size);
1438                 break;
1439         }
1440
1441         case tpo_unknown:
1442                 return;   /* ignore unknown type */
1443
1444         default:
1445                 parse_error(env, "unknown type kind: \"%d\"\n", tpop);
1446                 skip_to(env, '\n');
1447                 return;
1448         }
1449
1450         set_type_alignment_bytes(type, align);
1451         type->flags = flags;
1452
1453         if (state == layout_fixed)
1454                 ARR_APP1(ir_type *, env->fixedtypes, type);
1455
1456         set_id(env, typenr, type);
1457 }
1458
1459 /** Reads an entity description and remembers it by its id. */
1460 static void import_entity(io_env_t *env)
1461 {
1462         long           entnr      = read_long(env);
1463         ident         *name       = read_ident(env);
1464         ident         *ld_name    = read_ident_null(env);
1465         ir_visibility  visibility = ir_visibility_default;
1466         ir_linkage     linkage    = IR_LINKAGE_DEFAULT;
1467         long           typenr;
1468         long           ownertypenr;
1469         const char    *str;
1470         ir_type       *type;
1471         ir_type       *ownertype;
1472         ir_entity     *entity;
1473
1474         skip_ws(env);
1475         while (!isdigit(env->c)) {
1476                 char     *vstr = read_word(env);
1477                 unsigned  v;
1478
1479                 skip_ws(env);
1480
1481                 v = symbol(vstr, tt_visibility);
1482                 if (v != SYMERROR) {
1483                         visibility = (ir_visibility)v;
1484                         continue;
1485                 }
1486                 v = symbol(vstr, tt_linkage);
1487                 if (v != SYMERROR) {
1488                         linkage |= (ir_linkage)v;
1489                         continue;
1490                 }
1491                 printf("Parser error, expected visibility or linkage, got '%s'\n",
1492                        vstr);
1493                 break;
1494         }
1495
1496         typenr      = read_long(env);
1497         ownertypenr = read_long(env);
1498
1499         type      = get_type(env, typenr);
1500         ownertype = !ownertypenr ? get_glob_type() : get_type(env, ownertypenr);
1501         entity    = new_entity(ownertype, name, type);
1502
1503         if (ld_name != NULL)
1504                 set_entity_ld_ident(entity, ld_name);
1505         set_entity_offset(entity, (int) read_long(env));
1506         set_entity_offset_bits_remainder(entity, (unsigned char) read_long(env));
1507         set_entity_compiler_generated(entity, (int) read_long(env));
1508         set_entity_volatility(entity, read_volatility(env));
1509         set_entity_visibility(entity, visibility);
1510         set_entity_linkage(entity, linkage);
1511
1512         str = read_word(env);
1513         if (strcmp(str, "initializer") == 0) {
1514                 set_entity_initializer(entity, read_initializer(env));
1515         } else if (strcmp(str, "compoundgraph") == 0) {
1516                 int n = (int) read_long(env);
1517                 int i;
1518                 for (i = 0; i < n; i++) {
1519                         ir_entity *member = get_entity(env, read_long(env));
1520                         ir_node   *irn    = get_node_or_dummy(env, read_long(env));
1521                         add_compound_ent_value(entity, irn, member);
1522                 }
1523         } else if (strcmp(str, "none") == 0) {
1524                 /* do nothing */
1525         } else {
1526                 parse_error(env, "expected 'initializer', 'compoundgraph' or 'none' got '%s'\n", str);
1527                 exit(1);
1528         }
1529
1530         set_id(env, entnr, entity);
1531 }
1532
1533 /** Parses the whole type graph. */
1534 static int parse_typegraph(io_env_t *env)
1535 {
1536         ir_graph *old_irg = env->irg;
1537         keyword_t kwkind;
1538
1539         EXPECT('{');
1540
1541         env->irg = get_const_code_irg();
1542
1543         /* parse all types first */
1544         while (true) {
1545                 skip_ws(env);
1546                 if (env->c == '}') {
1547                         read_c(env);
1548                         break;
1549                 }
1550
1551                 kwkind = (keyword_t) read_enum(env, tt_keyword);
1552                 switch (kwkind) {
1553                 case kw_type:
1554                         import_type(env);
1555                         break;
1556
1557                 case kw_entity:
1558                         import_entity(env);
1559                         break;
1560
1561                 default:
1562                         parse_error(env, "type graph element not supported yet: %d\n", kwkind);
1563                         skip_to(env, '\n');
1564                         break;
1565                 }
1566         }
1567         env->irg = old_irg;
1568         return 1;
1569 }
1570
1571 static int read_node_header(io_env_t *env, long *nodenr, ir_node ***preds,
1572                             const char **nodename)
1573 {
1574         int numpreds;
1575
1576         *nodename = read_word(env);
1577         *nodenr   = read_long(env);
1578
1579         ARR_RESIZE(ir_node*, *preds, 0);
1580
1581         expect_list_begin(env);
1582         for (numpreds = 0; list_has_next(env); numpreds++) {
1583                 long     val  = read_long(env);
1584                 ir_node *pred = get_node_or_dummy(env, val);
1585                 ARR_APP1(ir_node*, *preds, pred);
1586         }
1587
1588         return numpreds;
1589 }
1590
1591 static ir_node *read_ASM(io_env_t *env, int numpreds, ir_node **preds)
1592 {
1593         ir_node *newnode;
1594         ir_asm_constraint *input_constraints  = NEW_ARR_F(ir_asm_constraint, 0);
1595         ir_asm_constraint *output_constraints = NEW_ARR_F(ir_asm_constraint, 0);
1596         ident            **clobbers           = NEW_ARR_F(ident*, 0);
1597
1598         ident *asm_text = read_ident(env);
1599
1600         expect_list_begin(env);
1601         while (list_has_next(env)) {
1602                 ir_asm_constraint constraint;
1603                 constraint.pos        = read_unsigned(env);
1604                 constraint.constraint = read_ident(env);
1605                 constraint.mode       = read_mode(env);
1606                 ARR_APP1(ir_asm_constraint, input_constraints, constraint);
1607         }
1608
1609         expect_list_begin(env);
1610         while (list_has_next(env)) {
1611                 ir_asm_constraint constraint;
1612                 constraint.pos        = read_unsigned(env);
1613                 constraint.constraint = read_ident(env);
1614                 constraint.mode       = read_mode(env);
1615                 ARR_APP1(ir_asm_constraint, output_constraints, constraint);
1616         }
1617
1618         expect_list_begin(env);
1619         while (list_has_next(env)) {
1620                 ident *clobber = read_ident(env);
1621                 ARR_APP1(ident*, clobbers, clobber);
1622         }
1623
1624         assert(ARR_LEN(input_constraints) == (size_t)numpreds-1);
1625
1626         newnode = new_r_ASM(preds[0], numpreds-1, preds+1,
1627                         input_constraints,
1628                         ARR_LEN(output_constraints),
1629                         output_constraints,
1630                         ARR_LEN(clobbers),
1631                         clobbers,
1632                         asm_text);
1633         DEL_ARR_F(clobbers);
1634         DEL_ARR_F(output_constraints);
1635         DEL_ARR_F(input_constraints);
1636         return newnode;
1637 }
1638
1639 /** Parses an IRG. */
1640 static int parse_graph(io_env_t *env, ir_graph *irg)
1641 {
1642         ir_node   **preds = NEW_ARR_F(ir_node*,0);
1643         int         i, numpreds, ret = 1;
1644         long        nodenr;
1645         const char *nodename;
1646         ir_node    *node, *newnode;
1647
1648         env->irg = irg;
1649
1650         EXPECT('{');
1651
1652         while (true) {
1653                 skip_ws(env);
1654                 if (env->c == '}') {
1655                         read_c(env);
1656                         break;
1657                 }
1658
1659                 numpreds = read_node_header(env, &nodenr, &preds, &nodename);
1660
1661                 node = get_node_or_null(env, nodenr);
1662                 newnode = NULL;
1663
1664                 EXPECT('{');
1665
1666                 switch (symbol(nodename, tt_iro)) {
1667                 case iro_End: {
1668                         ir_node *newendblock = preds[0];
1669                         newnode = get_irg_end(irg);
1670                         exchange(get_nodes_block(newnode), newendblock);
1671                         for (i = 1; i < numpreds; i++)
1672                                 add_irn_n(newnode, preds[i]);
1673                         break;
1674                 }
1675
1676                 case iro_Start: {
1677                         ir_node *newstartblock = preds[0];
1678                         newnode = get_irg_start(irg);
1679                         exchange(get_nodes_block(newnode), newstartblock);
1680                         break;
1681                 }
1682
1683                 case iro_Block:
1684                         newnode = new_r_Block(irg, numpreds, preds);
1685                         break;
1686
1687                 case iro_Anchor:
1688                         newnode = irg->anchor;
1689                         for (i = 1; i < numpreds; i++)
1690                                 set_irn_n(newnode, i-1, preds[i]);
1691                         set_nodes_block(newnode, preds[0]);
1692                         break;
1693
1694                 case iro_SymConst: {
1695                         long entnr = read_long(env);
1696                         union symconst_symbol sym;
1697                         sym.entity_p = get_entity(env, entnr);
1698                         ir_mode *mode = read_mode(env);
1699                         newnode = new_r_SymConst(irg, mode, sym, symconst_addr_ent);
1700                         break;
1701                 }
1702
1703                 case iro_Proj: {
1704                         ir_mode *mode = read_mode(env);
1705                         long     pn   = read_long(env);
1706                         newnode = new_r_Proj(preds[1], mode, pn);
1707                         /* explicitely set block, since preds[1] might be a dummy node
1708                          * which is always in the startblock */
1709                         set_nodes_block(newnode, preds[0]);
1710                         break;
1711                 }
1712
1713                 case iro_ASM:
1714                         newnode = read_ASM(env, numpreds, preds);
1715                         break;
1716
1717                 #include "gen_irio_import.inl"
1718
1719                 default:
1720                         goto notsupported;
1721                 }
1722
1723                 EXPECT('}');
1724
1725                 if (!newnode) {
1726 notsupported:
1727                         parse_error(env, "node type not supported yet: %s\n", nodename);
1728                         abort();
1729                 }
1730
1731                 if (node)
1732                         exchange(node, newnode);
1733                 /* Always update hash entry to avoid more uses of id nodes */
1734                 set_id(env, nodenr, newnode);
1735         }
1736
1737         DEL_ARR_F(preds);
1738
1739         return ret;
1740 }
1741
1742 static int parse_modes(io_env_t *env)
1743 {
1744         EXPECT('{');
1745
1746         while (true) {
1747                 keyword_t kwkind;
1748
1749                 skip_ws(env);
1750                 if (env->c == '}') {
1751                         read_c(env);
1752                         break;
1753                 }
1754
1755                 kwkind = (keyword_t) read_enum(env, tt_keyword);
1756                 switch (kwkind) {
1757                 case kw_mode: {
1758                         const char *name = read_string(env);
1759                         ir_mode_sort sort = (ir_mode_sort)read_enum(env, tt_mode_sort);
1760                         int size = read_long(env);
1761                         int sign = read_long(env);
1762                         ir_mode_arithmetic arith = read_mode_arithmetic(env);
1763                         unsigned modulo_shift = read_long(env);
1764                         int vector_elems = read_long(env);
1765                         ir_mode *mode;
1766
1767                         if (vector_elems != 1) {
1768                                 panic("no support for import of vector modes yes");
1769                         }
1770
1771                         mode = new_ir_mode(name, sort, size, sign, arith, modulo_shift);
1772                         if (mode_is_reference(mode)) {
1773                                 set_reference_mode_signed_eq(mode, read_mode(env));
1774                                 set_reference_mode_unsigned_eq(mode, read_mode(env));
1775                                 int is_mode_P = read_int(env);
1776                                 if (is_mode_P) {
1777                                         set_modeP_data(mode);
1778                                         set_modeP_code(mode);
1779                                 }
1780                         }
1781                         break;
1782                 }
1783
1784                 default:
1785                         skip_to(env, '\n');
1786                         break;
1787                 }
1788         }
1789         return 1;
1790 }
1791
1792 static int parse_program(io_env_t *env)
1793 {
1794         EXPECT('{');
1795
1796         while (true) {
1797                 keyword_t kwkind;
1798
1799                 skip_ws(env);
1800                 if (env->c == '}') {
1801                         read_c(env);
1802                         break;
1803                 }
1804
1805                 kwkind = (keyword_t) read_enum(env, tt_keyword);
1806                 switch (kwkind) {
1807                 case kw_segment_type: {
1808                         ir_segment_t  segment = (ir_segment_t) read_enum(env, tt_segment);
1809                         ir_type      *type    = read_type(env);
1810                         set_segment_type(segment, type);
1811                         break;
1812                 }
1813                 default:
1814                         parse_error(env, "unexpected keyword %d\n", kwkind);
1815                         skip_to(env, '\n');
1816                 }
1817         }
1818         return 1;
1819 }
1820
1821 void ir_import(const char *filename)
1822 {
1823         FILE *file = fopen(filename, "rt");
1824         if (file == NULL) {
1825                 perror(filename);
1826                 exit(1);
1827         }
1828
1829         ir_import_file(file, filename);
1830
1831         fclose(file);
1832 }
1833
1834 void ir_import_file(FILE *input, const char *inputname)
1835 {
1836         int oldoptimize = get_optimize();
1837         firm_verification_t oldver = get_node_verification_mode();
1838         io_env_t ioenv;
1839         io_env_t *env = &ioenv;
1840         size_t i, n;
1841
1842         symtbl_init();
1843
1844         memset(env, 0, sizeof(*env));
1845         obstack_init(&env->obst);
1846         env->idset      = new_set(id_cmp, 128);
1847         env->fixedtypes = NEW_ARR_F(ir_type *, 0);
1848         env->inputname  = inputname;
1849         env->file       = input;
1850         env->line       = 1;
1851
1852         /* read first character */
1853         read_c(env);
1854
1855         set_optimize(0);
1856         do_node_verification(FIRM_VERIFICATION_OFF);
1857
1858         while (true) {
1859                 keyword_t kw;
1860
1861                 skip_ws(env);
1862                 if (env->c == EOF)
1863                         break;
1864
1865                 kw = (keyword_t)read_enum(env, tt_keyword);
1866                 switch (kw) {
1867                 case kw_modes:
1868                         if (!parse_modes(env)) goto end;
1869                         break;
1870
1871                 case kw_typegraph:
1872                         if (!parse_typegraph(env)) goto end;
1873                         break;
1874
1875                 case kw_irg:
1876                 {
1877                         ir_entity *irgent = get_entity(env, read_long(env));
1878                         ir_graph *irg = new_ir_graph(irgent, 0);
1879                         set_irg_frame_type(irg, get_type(env, read_long(env)));
1880                         if (!parse_graph(env, irg)) goto end;
1881                         break;
1882                 }
1883
1884                 case kw_constirg: {
1885                         ir_graph *constirg = get_const_code_irg();
1886                         long bodyblockid = read_long(env);
1887                         set_id(env, bodyblockid, constirg->current_block);
1888                         if (!parse_graph(env, constirg)) goto end;
1889                         break;
1890                 }
1891
1892                 case kw_program:
1893                         parse_program(env);
1894                         break;
1895
1896                 default: {
1897                         parse_error(env, "Unexpected keyword %d at toplevel\n", kw);
1898                         exit(1);
1899                 }
1900                 }
1901         }
1902
1903 end:
1904         n = ARR_LEN(env->fixedtypes);
1905         for (i = 0; i < n; i++)
1906                 set_type_state(env->fixedtypes[i], layout_fixed);
1907
1908         DEL_ARR_F(env->fixedtypes);
1909
1910         del_set(env->idset);
1911
1912         irp_finalize_cons();
1913
1914         do_node_verification(oldver);
1915         set_optimize(oldoptimize);
1916
1917         obstack_free(&env->obst, NULL);
1918 }