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