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, Matthias Braun
  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_t.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 "set.h"
  47 #include "obst.h"
  48 #include "pmap.h"
  49 #include "pdeq.h"
  50
  51 #define SYMERROR ((unsigned) ~0)
  52
  53 static void register_generated_node_readers(void);
  54 static void register_generated_node_writers(void);
  55
  56 typedef struct delayed_initializer_t {
  57         ir_initializer_t *initializer;
  58         long              node_nr;
  59 } delayed_initializer_t;
  60
  61 typedef struct delayed_pred_t {
  62         ir_node *node;
  63         int      n_preds;
  64         long     preds[];
  65 } delayed_pred_t;
  66
  67 typedef struct read_env_t {
  68         int            c;           /**< currently read char */
  69         FILE          *file;
  70         const char    *inputname;
  71         unsigned       line;
  72
  73         ir_graph      *irg;
  74         set           *idset;       /**< id_entry set, which maps from file ids to
  75                                          new Firm elements */
  76         ir_type      **fixedtypes;
  77         bool           read_errors;
  78         struct obstack obst;
  79         struct obstack preds_obst;
  80         delayed_initializer_t *delayed_initializers;
  81         const delayed_pred_t **delayed_preds;
  82 } read_env_t;
  83
  84 typedef struct write_env_t {
  85         FILE *file;
  86         pdeq *write_queue;
  87 } write_env_t;
  88
  89 typedef enum typetag_t {
  90         tt_align,
  91         tt_builtin_kind,
  92         tt_cond_jmp_predicate,
  93         tt_initializer,
  94         tt_irg_inline_property,
  95         tt_keyword,
  96         tt_linkage,
  97         tt_mode_arithmetic,
  98         tt_pin_state,
  99         tt_segment,
 100         tt_throws,
 101         tt_tpo,
 102         tt_type_state,
 103         tt_visibility,
 104         tt_volatility,
 105         tt_where_alloc,
 106 } typetag_t;
 107
 108 typedef enum keyword_t {
 109         kw_asm,
 110         kw_compound_member,
 111         kw_constirg,
 112         kw_entity,
 113         kw_float_mode,
 114         kw_int_mode,
 115         kw_irg,
 116         kw_label,
 117         kw_method,
 118         kw_modes,
 119         kw_parameter,
 120         kw_program,
 121         kw_reference_mode,
 122         kw_segment_type,
 123         kw_type,
 124         kw_typegraph,
 125         kw_unknown,
 126 } keyword_t;
 127
 128 typedef struct symbol_t {
 129         const char *str;      /**< The name of this symbol. */
 130         typetag_t   typetag;  /**< The type tag of this symbol. */
 131         unsigned    code;     /**< The value of this symbol. */
 132 } symbol_t;
 133
 134 typedef struct id_entry {
 135         long id;
 136         void *elem;
 137 } id_entry;
 138
 139 /** The symbol table, a set of symbol_t elements. */
 140 static set *symtbl;
 141
 142 /**
 143  * Compare two symbol table entries.
 144  */
 145 static int symbol_cmp(const void *elt, const void *key, size_t size)
 146 {
 147         int res;
 148         const symbol_t *entry = (const symbol_t *) elt;
 149         const symbol_t *keyentry = (const symbol_t *) key;
 150         (void) size;
 151         res = entry->typetag - keyentry->typetag;
 152         if (res) return res;
 153         return strcmp(entry->str, keyentry->str);
 154 }
 155
 156 static int id_cmp(const void *elt, const void *key, size_t size)
 157 {
 158         const id_entry *entry = (const id_entry *) elt;
 159         const id_entry *keyentry = (const id_entry *) key;
 160         (void) size;
 161         return entry->id - keyentry->id;
 162 }
 163
 164 static void __attribute__((format(printf, 2, 3)))
 165 parse_error(read_env_t *env, const char *fmt, ...)
 166 {
 167         va_list  ap;
 168         unsigned line = env->line;
 169
 170         /* workaround read_c "feature" that a '\n' triggers the line++
 171          * instead of the character after the '\n' */
 172         if (env->c == '\n') {
 173                 line--;
 174         }
 175
 176         fprintf(stderr, "%s:%u: error ", env->inputname, line);
 177         env->read_errors = true;
 178
 179         /* let's hope firm doesn't die on further errors */
 180         do_node_verification(0);
 181
 182         va_start(ap, fmt);
 183         vfprintf(stderr, fmt, ap);
 184         va_end(ap);
 185 }
 186
 187 /** Initializes the symbol table. May be called more than once without problems. */
 188 static void symtbl_init(void)
 189 {
 190         symbol_t key;
 191
 192         /* Only initialize once */
 193         if (symtbl != NULL)
 194                 return;
 195
 196         symtbl = new_set(symbol_cmp, 256);
 197
 198 #define INSERT(tt, s, cod)                                       \
 199         key.str = (s);                                               \
 200         key.typetag = (tt);                                          \
 201         key.code = (cod);                                            \
 202         set_insert(symtbl, &key, sizeof(key), hash_str(s) + tt * 17)
 203
 204 #define INSERTENUM(tt, e) INSERT(tt, #e, e)
 205 #define INSERTKEYWORD(k) INSERT(tt_keyword, #k, kw_##k)
 206
 207         INSERT(tt_tpo, "array", tpo_array);
 208         INSERT(tt_tpo, "class", tpo_class);
 209         INSERT(tt_tpo, "method", tpo_method);
 210         INSERT(tt_tpo, "pointer", tpo_pointer);
 211         INSERT(tt_tpo, "primitive", tpo_primitive);
 212         INSERT(tt_tpo, "struct", tpo_struct);
 213         INSERT(tt_tpo, "union", tpo_union);
 214         INSERT(tt_tpo, "Unknown", tpo_unknown);
 215
 216         INSERT(tt_segment, "global", IR_SEGMENT_GLOBAL);
 217         INSERT(tt_segment, "thread_local", IR_SEGMENT_THREAD_LOCAL);
 218         INSERT(tt_segment, "constructors", IR_SEGMENT_CONSTRUCTORS);
 219         INSERT(tt_segment, "destructors", IR_SEGMENT_DESTRUCTORS);
 220
 221         INSERT(tt_linkage, "constant", IR_LINKAGE_CONSTANT);
 222         INSERT(tt_linkage, "weak", IR_LINKAGE_WEAK);
 223         INSERT(tt_linkage, "garbage_collect", IR_LINKAGE_GARBAGE_COLLECT);
 224         INSERT(tt_linkage, "merge", IR_LINKAGE_MERGE);
 225         INSERT(tt_linkage, "hidden_user", IR_LINKAGE_HIDDEN_USER);
 226
 227         INSERT(tt_visibility, "local", ir_visibility_local);
 228         INSERT(tt_visibility, "external", ir_visibility_external);
 229         INSERT(tt_visibility, "private", ir_visibility_private);
 230
 231         INSERT(tt_throws, "throw",   true);
 232         INSERT(tt_throws, "nothrow", false);
 233
 234         INSERTKEYWORD(asm);
 235         INSERTKEYWORD(compound_member);
 236         INSERTKEYWORD(constirg);
 237         INSERTKEYWORD(entity);
 238         INSERTKEYWORD(float_mode);
 239         INSERTKEYWORD(int_mode);
 240         INSERTKEYWORD(irg);
 241         INSERTKEYWORD(label);
 242         INSERTKEYWORD(method);
 243         INSERTKEYWORD(modes);
 244         INSERTKEYWORD(parameter);
 245         INSERTKEYWORD(program);
 246         INSERTKEYWORD(reference_mode);
 247         INSERTKEYWORD(segment_type);
 248         INSERTKEYWORD(type);
 249         INSERTKEYWORD(typegraph);
 250         INSERTKEYWORD(unknown);
 251
 252         INSERTENUM(tt_align, align_non_aligned);
 253         INSERTENUM(tt_align, align_is_aligned);
 254
 255         INSERTENUM(tt_builtin_kind, ir_bk_trap);
 256         INSERTENUM(tt_builtin_kind, ir_bk_debugbreak);
 257         INSERTENUM(tt_builtin_kind, ir_bk_return_address);
 258         INSERTENUM(tt_builtin_kind, ir_bk_frame_address);
 259         INSERTENUM(tt_builtin_kind, ir_bk_prefetch);
 260         INSERTENUM(tt_builtin_kind, ir_bk_ffs);
 261         INSERTENUM(tt_builtin_kind, ir_bk_clz);
 262         INSERTENUM(tt_builtin_kind, ir_bk_ctz);
 263         INSERTENUM(tt_builtin_kind, ir_bk_popcount);
 264         INSERTENUM(tt_builtin_kind, ir_bk_parity);
 265         INSERTENUM(tt_builtin_kind, ir_bk_bswap);
 266         INSERTENUM(tt_builtin_kind, ir_bk_inport);
 267         INSERTENUM(tt_builtin_kind, ir_bk_outport);
 268         INSERTENUM(tt_builtin_kind, ir_bk_inner_trampoline);
 269
 270         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_NONE);
 271         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_TRUE);
 272         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_FALSE);
 273
 274         INSERTENUM(tt_initializer, IR_INITIALIZER_CONST);
 275         INSERTENUM(tt_initializer, IR_INITIALIZER_TARVAL);
 276         INSERTENUM(tt_initializer, IR_INITIALIZER_NULL);
 277         INSERTENUM(tt_initializer, IR_INITIALIZER_COMPOUND);
 278
 279         INSERT(tt_mode_arithmetic, "uninitialized",      irma_uninitialized);
 280         INSERT(tt_mode_arithmetic, "none",               irma_none);
 281         INSERT(tt_mode_arithmetic, "twos_complement",    irma_twos_complement);
 282         INSERT(tt_mode_arithmetic, "ieee754",            irma_ieee754);
 283         INSERT(tt_mode_arithmetic, "x86_extended_float", irma_x86_extended_float);
 284
 285         INSERT(tt_irg_inline_property, "any",            irg_inline_any);
 286         INSERT(tt_irg_inline_property, "recommended",    irg_inline_recomended);
 287         INSERT(tt_irg_inline_property, "forbidden",      irg_inline_forbidden);
 288         INSERT(tt_irg_inline_property, "forced",         irg_inline_forced);
 289         INSERT(tt_irg_inline_property, "forced_no_body", irg_inline_forced_no_body);
 290
 291         INSERTENUM(tt_pin_state, op_pin_state_floats);
 292         INSERTENUM(tt_pin_state, op_pin_state_pinned);
 293         INSERTENUM(tt_pin_state, op_pin_state_exc_pinned);
 294         INSERTENUM(tt_pin_state, op_pin_state_mem_pinned);
 295
 296         INSERTENUM(tt_type_state, layout_undefined);
 297         INSERTENUM(tt_type_state, layout_fixed);
 298
 299         INSERTENUM(tt_volatility, volatility_non_volatile);
 300         INSERTENUM(tt_volatility, volatility_is_volatile);
 301
 302         INSERTENUM(tt_where_alloc, stack_alloc);
 303         INSERTENUM(tt_where_alloc, heap_alloc);
 304
 305 #undef INSERTKEYWORD
 306 #undef INSERTENUM
 307 #undef INSERT
 308 }
 309
 310 static const char *get_segment_name(ir_segment_t segment)
 311 {
 312         switch (segment) {
 313         case IR_SEGMENT_GLOBAL:       return "global";
 314         case IR_SEGMENT_THREAD_LOCAL: return "thread_local";
 315         case IR_SEGMENT_CONSTRUCTORS: return "constructors";
 316         case IR_SEGMENT_DESTRUCTORS:  return "destructors";
 317         }
 318         panic("INVALID_SEGMENT");
 319 }
 320
 321 static const char *get_visibility_name(ir_visibility visibility)
 322 {
 323         switch (visibility) {
 324         case ir_visibility_local:    return "local";
 325         case ir_visibility_external: return "external";
 326         case ir_visibility_private:  return "private";
 327         }
 328         panic("INVALID_VISIBILITY");
 329 }
 330
 331 static const char *get_mode_arithmetic_name(ir_mode_arithmetic arithmetic)
 332 {
 333         switch (arithmetic) {
 334         case irma_uninitialized:      return "uninitialized";
 335         case irma_none:               return "none";
 336         case irma_twos_complement:    return "twos_complement";
 337         case irma_ieee754:            return "ieee754";
 338         case irma_x86_extended_float: return "x86_extended_float";
 339         }
 340         panic("invalid mode_arithmetic");
 341 }
 342
 343 static const char *get_irg_inline_property_name(irg_inline_property prop)
 344 {
 345         switch (prop) {
 346         case irg_inline_any:            return "any";
 347         case irg_inline_recomended:     return "recommended";
 348         case irg_inline_forbidden:      return "forbidden";
 349         case irg_inline_forced:         return "forced";
 350         case irg_inline_forced_no_body: return "forced_no_body";
 351         }
 352         panic("invalid irg_inline_property");
 353 }
 354
 355 /** Returns the according symbol value for the given string and tag, or SYMERROR if none was found. */
 356 static unsigned symbol(const char *str, typetag_t typetag)
 357 {
 358         symbol_t key, *entry;
 359
 360         key.str = str;
 361         key.typetag = typetag;
 362
 363         entry = (symbol_t*)set_find(symtbl, &key, sizeof(key), hash_str(str) + typetag * 17);
 364         return entry ? entry->code : SYMERROR;
 365 }
 366
 367 static void write_long(write_env_t *env, long value)
 368 {
 369         fprintf(env->file, "%ld ", value);
 370 }
 371
 372 static void write_int(write_env_t *env, int value)
 373 {
 374         fprintf(env->file, "%d ", value);
 375 }
 376
 377 static void write_unsigned(write_env_t *env, unsigned value)
 378 {
 379         fprintf(env->file, "%u ", value);
 380 }
 381
 382 static void write_size_t(write_env_t *env, size_t value)
 383 {
 384         ir_fprintf(env->file, "%zu ", value);
 385 }
 386
 387 static void write_symbol(write_env_t *env, const char *symbol)
 388 {
 389         fputs(symbol, env->file);
 390         fputc(' ', env->file);
 391 }
 392
 393 static void write_entity_ref(write_env_t *env, ir_entity *entity)
 394 {
 395         write_long(env, get_entity_nr(entity));
 396 }
 397
 398 static void write_type_ref(write_env_t *env, ir_type *type)
 399 {
 400         switch (get_type_tpop_code(type)) {
 401         case tpo_unknown:
 402                 write_symbol(env, "unknown");
 403                 return;
 404         case tpo_none:
 405                 write_symbol(env, "none");
 406                 return;
 407         case tpo_code:
 408                 write_symbol(env, "code");
 409                 return;
 410         default:
 411                 break;
 412         }
 413         write_long(env, get_type_nr(type));
 414 }
 415
 416 static void write_string(write_env_t *env, const char *string)
 417 {
 418         const char *c;
 419         fputc('"', env->file);
 420         for (c = string; *c != '\0'; ++c) {
 421                 switch (*c) {
 422                 case '\n':
 423                         fputc('\\', env->file);
 424                         fputc('n', env->file);
 425                         break;
 426                 case '"':
 427                 case '\\':
 428                         fputc('\\', env->file);
 429                         /* FALLTHROUGH */
 430                 default:
 431                         fputc(*c, env->file);
 432                         break;
 433                 }
 434         }
 435         fputc('"', env->file);
 436         fputc(' ', env->file);
 437 }
 438
 439 static void write_ident(write_env_t *env, ident *id)
 440 {
 441         write_string(env, get_id_str(id));
 442 }
 443
 444 static void write_ident_null(write_env_t *env, ident *id)
 445 {
 446         if (id == NULL) {
 447                 fputs("NULL ", env->file);
 448         } else {
 449                 write_ident(env, id);
 450         }
 451 }
 452
 453 static void write_mode_ref(write_env_t *env, ir_mode *mode)
 454 {
 455         write_string(env, get_mode_name(mode));
 456 }
 457
 458 static void write_tarval(write_env_t *env, ir_tarval *tv)
 459 {
 460         write_mode_ref(env, get_tarval_mode(tv));
 461         if (tv == tarval_bad) {
 462                 write_symbol(env, "bad");
 463         } else {
 464                 char buf[1024];
 465                 tarval_snprintf(buf, sizeof(buf), tv);
 466                 fputs(buf, env->file);
 467                 fputc(' ', env->file);
 468         }
 469 }
 470
 471 static void write_align(write_env_t *env, ir_align align)
 472 {
 473         fputs(get_align_name(align), env->file);
 474         fputc(' ', env->file);
 475 }
 476
 477 static void write_builtin_kind(write_env_t *env, const ir_node *node)
 478 {
 479         fputs(get_builtin_kind_name(get_Builtin_kind(node)), env->file);
 480         fputc(' ', env->file);
 481 }
 482
 483 static void write_cond_jmp_predicate(write_env_t *env, const ir_node *node)
 484 {
 485         fputs(get_cond_jmp_predicate_name(get_Cond_jmp_pred(node)), env->file);
 486         fputc(' ', env->file);
 487 }
 488
 489 static void write_relation(write_env_t *env, ir_relation relation)
 490 {
 491         write_long(env, (long)relation);
 492 }
 493
 494 static void write_where_alloc(write_env_t *env, ir_where_alloc where_alloc)
 495 {
 496         switch (where_alloc) {
 497         case stack_alloc: write_symbol(env, "stack_alloc"); return;
 498         case heap_alloc:  write_symbol(env, "heap_alloc");  return;
 499         }
 500         panic("invalid where_alloc value");
 501 }
 502
 503 static void write_throws(write_env_t *env, bool throws)
 504 {
 505         write_symbol(env, throws ? "throw" : "nothrow");
 506 }
 507
 508 static void write_list_begin(write_env_t *env)
 509 {
 510         fputs("[", env->file);
 511 }
 512
 513 static void write_list_end(write_env_t *env)
 514 {
 515         fputs("] ", env->file);
 516 }
 517
 518 static void write_scope_begin(write_env_t *env)
 519 {
 520         fputs("{\n", env->file);
 521 }
 522
 523 static void write_scope_end(write_env_t *env)
 524 {
 525         fputs("}\n\n", env->file);
 526 }
 527
 528 static void write_node_ref(write_env_t *env, const ir_node *node)
 529 {
 530         write_long(env, get_irn_node_nr(node));
 531 }
 532
 533 static void write_initializer(write_env_t *env, ir_initializer_t *ini)
 534 {
 535         FILE *f = env->file;
 536         ir_initializer_kind_t ini_kind = get_initializer_kind(ini);
 537
 538         fputs(get_initializer_kind_name(ini_kind), f);
 539         fputc(' ', f);
 540
 541         switch (ini_kind) {
 542         case IR_INITIALIZER_CONST:
 543                 write_node_ref(env, get_initializer_const_value(ini));
 544                 return;
 545
 546         case IR_INITIALIZER_TARVAL:
 547                 write_tarval(env, get_initializer_tarval_value(ini));
 548                 return;
 549
 550         case IR_INITIALIZER_NULL:
 551                 return;
 552
 553         case IR_INITIALIZER_COMPOUND: {
 554                 size_t i, n = get_initializer_compound_n_entries(ini);
 555                 write_size_t(env, n);
 556                 for (i = 0; i < n; ++i)
 557                         write_initializer(env, get_initializer_compound_value(ini, i));
 558                 return;
 559         }
 560         }
 561         panic("Unknown initializer kind");
 562 }
 563
 564 static void write_pin_state(write_env_t *env, op_pin_state state)
 565 {
 566         fputs(get_op_pin_state_name(state), env->file);
 567         fputc(' ', env->file);
 568 }
 569
 570 static void write_volatility(write_env_t *env, ir_volatility vol)
 571 {
 572         fputs(get_volatility_name(vol), env->file);
 573         fputc(' ', env->file);
 574 }
 575
 576 static void write_inline_property(write_env_t *env, irg_inline_property prop)
 577 {
 578         fputs(get_irg_inline_property_name(prop), env->file);
 579         fputc(' ', env->file);
 580 }
 581
 582 static void write_type_state(write_env_t *env, ir_type_state state)
 583 {
 584         fputs(get_type_state_name(state), env->file);
 585         fputc(' ', env->file);
 586 }
 587
 588 static void write_visibility(write_env_t *env, ir_visibility visibility)
 589 {
 590         fputs(get_visibility_name(visibility), env->file);
 591         fputc(' ', env->file);
 592 }
 593
 594 static void write_mode_arithmetic(write_env_t *env, ir_mode_arithmetic arithmetic)
 595 {
 596         fputs(get_mode_arithmetic_name(arithmetic), env->file);
 597         fputc(' ', env->file);
 598 }
 599
 600 static void write_type(write_env_t *env, ir_type *tp);
 601 static void write_entity(write_env_t *env, ir_entity *entity);
 602
 603 static void write_type_common(write_env_t *env, ir_type *tp)
 604 {
 605         fputc('\t', env->file);
 606         write_symbol(env, "type");
 607         write_long(env, get_type_nr(tp));
 608         write_symbol(env, get_type_tpop_name(tp));
 609         write_unsigned(env, get_type_size_bytes(tp));
 610         write_unsigned(env, get_type_alignment_bytes(tp));
 611         write_type_state(env, get_type_state(tp));
 612         write_unsigned(env, tp->flags);
 613 }
 614
 615 static void write_type_primitive(write_env_t *env, ir_type *tp)
 616 {
 617         ir_type *base_type = get_primitive_base_type(tp);
 618
 619         if (base_type != NULL)
 620                 write_type(env, base_type);
 621
 622         write_type_common(env, tp);
 623         write_mode_ref(env, get_type_mode(tp));
 624         if (base_type == NULL)
 625                 base_type = get_none_type();
 626         write_type_ref(env, base_type);
 627         fputc('\n', env->file);
 628 }
 629
 630 static void write_type_compound(write_env_t *env, ir_type *tp)
 631 {
 632         size_t n_members = get_compound_n_members(tp);
 633         size_t i;
 634
 635         if (is_Class_type(tp)) {
 636                 if (get_class_n_subtypes(tp) > 0 || get_class_n_supertypes(tp) > 0
 637                     || get_class_type_info(tp) != NULL || get_class_vtable_size(tp) > 0) {
 638                         /* sub/superclass export not implemented yet, it's unclear wether
 639                          * class types will stay in libfirm anyway */
 640                         panic("can't export class types yet");
 641                 }
 642         }
 643         write_type_common(env, tp);
 644         write_ident_null(env, get_compound_ident(tp));
 645         fputc('\n', env->file);
 646
 647         for (i = 0; i < n_members; ++i) {
 648                 ir_entity *member = get_compound_member(tp, i);
 649                 write_entity(env, member);
 650         }
 651 }
 652
 653 static void write_type_array(write_env_t *env, ir_type *tp)
 654 {
 655         size_t     n_dimensions   = get_array_n_dimensions(tp);
 656         ir_type   *element_type   = get_array_element_type(tp);
 657         ir_entity *element_entity = get_array_element_entity(tp);
 658         size_t   i;
 659
 660         write_type(env, element_type);
 661
 662         write_type_common(env, tp);
 663         write_size_t(env, n_dimensions);
 664         write_type_ref(env, get_array_element_type(tp));
 665         for (i = 0; i < n_dimensions; i++) {
 666                 ir_node *lower = get_array_lower_bound(tp, i);
 667                 ir_node *upper = get_array_upper_bound(tp, i);
 668
 669                 if (is_Const(lower))
 670                         write_long(env, get_tarval_long(get_Const_tarval(lower)));
 671                 else
 672                         panic("Lower array bound is not constant");
 673
 674                 if (is_Const(upper))
 675                         write_long(env, get_tarval_long(get_Const_tarval(upper)));
 676                 else if (is_Unknown(upper))
 677                         write_symbol(env, "unknown");
 678                 else
 679                         panic("Upper array bound is not constant");
 680         }
 681         /* note that we just write a reference to the element entity
 682          * but never the entity itself */
 683         write_entity_ref(env, element_entity);
 684         fputc('\n', env->file);
 685 }
 686
 687 static void write_type_method(write_env_t *env, ir_type *tp)
 688 {
 689         size_t nparams  = get_method_n_params(tp);
 690         size_t nresults = get_method_n_ress(tp);
 691         size_t i;
 692
 693         for (i = 0; i < nparams; i++)
 694                 write_type(env, get_method_param_type(tp, i));
 695         for (i = 0; i < nresults; i++)
 696                 write_type(env, get_method_res_type(tp, i));
 697
 698         write_type_common(env, tp);
 699         write_unsigned(env, get_method_calling_convention(tp));
 700         write_unsigned(env, get_method_additional_properties(tp));
 701         write_size_t(env, nparams);
 702         write_size_t(env, nresults);
 703         for (i = 0; i < nparams; i++)
 704                 write_type_ref(env, get_method_param_type(tp, i));
 705         for (i = 0; i < nresults; i++)
 706                 write_type_ref(env, get_method_res_type(tp, i));
 707         write_unsigned(env, get_method_variadicity(tp));
 708         fputc('\n', env->file);
 709 }
 710
 711 static void write_type_pointer(write_env_t *env, ir_type *tp)
 712 {
 713         ir_type *points_to = get_pointer_points_to_type(tp);
 714
 715         write_type(env, points_to);
 716
 717         write_type_common(env, tp);
 718         write_mode_ref(env, get_type_mode(tp));
 719         write_type_ref(env, points_to);
 720         fputc('\n', env->file);
 721 }
 722
 723 static void write_type_enumeration(write_env_t *env, ir_type *tp)
 724 {
 725         write_type_common(env, tp);
 726         write_ident_null(env, get_enumeration_ident(tp));
 727         fputc('\n', env->file);
 728 }
 729
 730 static void write_type(write_env_t *env, ir_type *tp)
 731 {
 732         if (type_visited(tp))
 733                 return;
 734         mark_type_visited(tp);
 735
 736         switch ((tp_opcode)get_type_tpop_code(tp)) {
 737         case tpo_none:
 738         case tpo_unknown:
 739         case tpo_code:
 740         case tpo_uninitialized:
 741                 /* no need to write special builtin types */
 742                 return;
 743
 744         case tpo_union:
 745         case tpo_struct:
 746         case tpo_class:
 747                 write_type_compound(env, tp);
 748                 return;
 749
 750         case tpo_primitive:    write_type_primitive(env, tp);   return;
 751         case tpo_enumeration:  write_type_enumeration(env, tp); return;
 752         case tpo_method:       write_type_method(env, tp);      return;
 753         case tpo_pointer:      write_type_pointer(env, tp);     return;
 754         case tpo_array:        write_type_array(env, tp);       return;
 755         }
 756         panic("can't write invalid type %+F\n", tp);
 757 }
 758
 759 static void write_entity(write_env_t *env, ir_entity *ent)
 760 {
 761         ir_type       *type       = get_entity_type(ent);
 762         ir_type       *owner      = get_entity_owner(ent);
 763         ir_visibility  visibility = get_entity_visibility(ent);
 764         ir_linkage     linkage    = get_entity_linkage(ent);
 765
 766         if (entity_visited(ent))
 767                 return;
 768         mark_entity_visited(ent);
 769
 770         write_type(env, type);
 771         write_type(env, owner);
 772
 773         fputc('\t', env->file);
 774         switch ((ir_entity_kind)ent->entity_kind) {
 775         case IR_ENTITY_NORMAL:          write_symbol(env, "entity");          break;
 776         case IR_ENTITY_METHOD:          write_symbol(env, "method");          break;
 777         case IR_ENTITY_LABEL:           write_symbol(env, "label");           break;
 778         case IR_ENTITY_COMPOUND_MEMBER: write_symbol(env, "compound_member"); break;
 779         case IR_ENTITY_PARAMETER:       write_symbol(env, "parameter");       break;
 780         case IR_ENTITY_UNKNOWN:
 781                 write_symbol(env, "unknown");
 782                 write_long(env, get_entity_nr(ent));
 783                 return;
 784         }
 785         write_long(env, get_entity_nr(ent));
 786
 787         if (ent->entity_kind != IR_ENTITY_LABEL
 788             && ent->entity_kind != IR_ENTITY_PARAMETER) {
 789                 write_ident_null(env, get_entity_ident(ent));
 790                 if (!entity_has_ld_ident(ent)) {
 791                         write_ident_null(env, NULL);
 792                 } else {
 793                         write_ident_null(env, get_entity_ld_ident(ent));
 794                 }
 795         }
 796
 797         write_visibility(env, visibility);
 798         write_list_begin(env);
 799         if (linkage & IR_LINKAGE_CONSTANT)
 800                 write_symbol(env, "constant");
 801         if (linkage & IR_LINKAGE_WEAK)
 802                 write_symbol(env, "weak");
 803         if (linkage & IR_LINKAGE_GARBAGE_COLLECT)
 804                 write_symbol(env, "garbage_collect");
 805         if (linkage & IR_LINKAGE_MERGE)
 806                 write_symbol(env, "merge");
 807         if (linkage & IR_LINKAGE_HIDDEN_USER)
 808                 write_symbol(env, "hidden_user");
 809         write_list_end(env);
 810
 811         write_type_ref(env, type);
 812         if (ent->entity_kind != IR_ENTITY_LABEL)
 813                 write_type_ref(env, owner);
 814         write_long(env, is_entity_compiler_generated(ent));
 815         write_volatility(env, get_entity_volatility(ent));
 816
 817         switch ((ir_entity_kind)ent->entity_kind) {
 818         case IR_ENTITY_NORMAL:
 819                 if (ent->initializer != NULL) {
 820                         write_symbol(env, "initializer");
 821                         write_initializer(env, get_entity_initializer(ent));
 822                 } else if (entity_has_compound_ent_values(ent)) {
 823                         /* compound graph API is deprecated */
 824                         panic("exporting compound_graph initializers not supported");
 825                 } else {
 826                         write_symbol(env, "none");
 827                 }
 828                 break;
 829         case IR_ENTITY_COMPOUND_MEMBER:
 830                 write_long(env, get_entity_offset(ent));
 831                 write_unsigned(env, get_entity_offset_bits_remainder(ent));
 832                 break;
 833         case IR_ENTITY_PARAMETER: {
 834                 size_t num = get_entity_parameter_number(ent);
 835                 if (num == IR_VA_START_PARAMETER_NUMBER) {
 836                         write_symbol(env, "va_start");
 837                 } else {
 838                         write_size_t(env, num);
 839                 }
 840                 break;
 841         }
 842         case IR_ENTITY_UNKNOWN:
 843         case IR_ENTITY_LABEL:
 844         case IR_ENTITY_METHOD:
 845                 break;
 846         }
 847
 848         fputc('\n', env->file);
 849 }
 850
 851 static void write_switch_table(write_env_t *env, const ir_switch_table *table)
 852 {
 853         size_t n_entries = ir_switch_table_get_n_entries(table);
 854         size_t i;
 855
 856         write_size_t(env, n_entries);
 857         for (i = 0; i < n_entries; ++i) {
 858                 long       pn  = ir_switch_table_get_pn(table, i);
 859                 ir_tarval *min = ir_switch_table_get_min(table, i);
 860                 ir_tarval *max = ir_switch_table_get_max(table, i);
 861                 write_long(env, pn);
 862                 write_tarval(env, min);
 863                 write_tarval(env, max);
 864         }
 865 }
 866
 867 static void write_pred_refs(write_env_t *env, const ir_node *node, int from)
 868 {
 869         int arity = get_irn_arity(node);
 870         int i;
 871         write_list_begin(env);
 872         assert(from <= arity);
 873         for (i = from; i < arity; ++i) {
 874                 ir_node *pred = get_irn_n(node, i);
 875                 write_node_ref(env, pred);
 876         }
 877         write_list_end(env);
 878 }
 879
 880 static void write_node_nr(write_env_t *env, const ir_node *node)
 881 {
 882         write_long(env, get_irn_node_nr(node));
 883 }
 884
 885 static void write_ASM(write_env_t *env, const ir_node *node)
 886 {
 887         ir_asm_constraint *input_constraints    = get_ASM_input_constraints(node);
 888         ir_asm_constraint *output_constraints   = get_ASM_output_constraints(node);
 889         ident            **clobbers             = get_ASM_clobbers(node);
 890         size_t             n_input_constraints  = get_ASM_n_input_constraints(node);
 891         size_t             n_output_constraints = get_ASM_n_output_constraints(node);
 892         size_t             n_clobbers           = get_ASM_n_clobbers(node);
 893         size_t             i;
 894
 895         write_symbol(env, "ASM");
 896         write_node_nr(env, node);
 897         write_node_nr(env, get_nodes_block(node));
 898
 899         write_ident(env, get_ASM_text(node));
 900         write_list_begin(env);
 901         for (i = 0; i < n_input_constraints; ++i) {
 902                 const ir_asm_constraint *constraint = &input_constraints[i];
 903                 write_unsigned(env, constraint->pos);
 904                 write_ident(env, constraint->constraint);
 905                 write_mode_ref(env, constraint->mode);
 906         }
 907         write_list_end(env);
 908
 909         write_list_begin(env);
 910         for (i = 0; i < n_output_constraints; ++i) {
 911                 const ir_asm_constraint *constraint = &output_constraints[i];
 912                 write_unsigned(env, constraint->pos);
 913                 write_ident(env, constraint->constraint);
 914                 write_mode_ref(env, constraint->mode);
 915         }
 916         write_list_end(env);
 917
 918         write_list_begin(env);
 919         for (i = 0; i < n_clobbers; ++i) {
 920                 ident *clobber = clobbers[i];
 921                 write_ident(env, clobber);
 922         }
 923         write_list_end(env);
 924
 925         write_pin_state(env, get_irn_pinned(node));
 926         write_pred_refs(env, node, 0);
 927 }
 928
 929 static void write_Phi(write_env_t *env, const ir_node *node)
 930 {
 931         write_symbol(env, "Phi");
 932         write_node_nr(env, node);
 933         write_node_ref(env, get_nodes_block(node));
 934         write_mode_ref(env, get_irn_mode(node));
 935         write_pred_refs(env, node, 0);
 936 }
 937
 938 static void write_Block(write_env_t *env, const ir_node *node)
 939 {
 940         ir_entity *entity = get_Block_entity(node);
 941
 942         if (entity != NULL) {
 943                 write_symbol(env, "BlockL");
 944                 write_node_nr(env, node);
 945                 write_entity_ref(env, entity);
 946         } else {
 947                 write_symbol(env, "Block");
 948                 write_node_nr(env, node);
 949         }
 950         write_pred_refs(env, node, 0);
 951 }
 952
 953 static void write_Anchor(write_env_t *env, const ir_node *node)
 954 {
 955         write_symbol(env, "Anchor");
 956         write_node_nr(env, node);
 957         write_pred_refs(env, node, 0);
 958 }
 959
 960 static void write_SymConst(write_env_t *env, const ir_node *node)
 961 {
 962         /* TODO: only symconst_addr_ent implemented yet */
 963         if (get_SymConst_kind(node) != symconst_addr_ent)
 964                 panic("Can't export %+F (only symconst_addr_ent supported)", node);
 965
 966         write_symbol(env, "SymConst");
 967         write_node_nr(env, node);
 968         write_mode_ref(env, get_irn_mode(node));
 969         write_entity_ref(env, get_SymConst_entity(node));
 970 }
 971
 972 typedef void (*write_node_func)(write_env_t *env, const ir_node *node);
 973
 974 static void register_node_writer(ir_op *op, write_node_func func)
 975 {
 976         set_generic_function_ptr(op, (op_func)func);
 977 }
 978
 979 static void writers_init(void)
 980 {
 981         ir_clear_opcodes_generic_func();
 982         register_node_writer(op_Anchor,   write_Anchor);
 983         register_node_writer(op_ASM,      write_ASM);
 984         register_node_writer(op_Block,    write_Block);
 985         register_node_writer(op_Phi,      write_Phi);
 986         register_node_writer(op_SymConst, write_SymConst);
 987         register_generated_node_writers();
 988 }
 989
 990 static void write_node(const ir_node *node, write_env_t *env)
 991 {
 992         ir_op          *op   = get_irn_op(node);
 993         write_node_func func = (write_node_func) get_generic_function_ptr(op);
 994
 995         fputc('\t', env->file);
 996         if (func == NULL)
 997                 panic("No write_node_func for %+F", node);
 998         func(env, node);
 999         fputc('\n', env->file);
1000 }
1001
1002 static void write_node_recursive(ir_node *node, write_env_t *env);
1003
1004 static void write_preds(ir_node *node, write_env_t *env)
1005 {
1006         int arity = get_irn_arity(node);
1007         int i;
1008         for (i = 0; i < arity; ++i) {
1009                 ir_node *pred = get_irn_n(node, i);
1010                 write_node_recursive(pred, env);
1011         }
1012 }
1013
1014 /**
1015  * Recursively write nodes.
1016  * The reader expects nodes in a way that except for block/phi/anchor nodes
1017  * all predecessors are already defined when we reach them. So usually we
1018  * recurse to all our predecessors except for block/phi/anchor nodes where
1019  * we put the predecessors into a queue for later processing.
1020  */
1021 static void write_node_recursive(ir_node *node, write_env_t *env)
1022 {
1023         if (irn_visited_else_mark(node))
1024                 return;
1025
1026         if (!is_Block(node)) {
1027                 write_node_recursive(get_nodes_block(node), env);
1028         }
1029         /* write predecessors */
1030         if (!is_Phi(node) && !is_Block(node) && !is_Anchor(node)) {
1031                 write_preds(node, env);
1032         } else {
1033                 int arity = get_irn_arity(node);
1034                 int i;
1035                 for (i = 0; i < arity; ++i) {
1036                         ir_node *pred = get_irn_n(node, i);
1037                         pdeq_putr(env->write_queue, pred);
1038                 }
1039         }
1040         write_node(node, env);
1041 }
1042
1043 static void write_mode(write_env_t *env, ir_mode *mode)
1044 {
1045         if (mode_is_int(mode)) {
1046                 write_symbol(env, "int_mode");
1047                 write_string(env, get_mode_name(mode));
1048                 write_mode_arithmetic(env, get_mode_arithmetic(mode));
1049                 write_unsigned(env, get_mode_size_bits(mode));
1050                 write_int(env, get_mode_sign(mode));
1051                 write_unsigned(env, get_mode_modulo_shift(mode));
1052         } else if (mode_is_reference(mode)) {
1053                 write_symbol(env, "reference_mode");
1054                 write_string(env, get_mode_name(mode));
1055                 write_mode_arithmetic(env, get_mode_arithmetic(mode));
1056                 write_unsigned(env, get_mode_size_bits(mode));
1057                 write_unsigned(env, get_mode_modulo_shift(mode));
1058
1059                 write_mode_ref(env, get_reference_mode_signed_eq(mode));
1060                 write_mode_ref(env, get_reference_mode_unsigned_eq(mode));
1061                 write_int(env, (mode == mode_P ? 1 : 0));
1062         } else if (mode_is_float(mode)) {
1063                 write_symbol(env, "float_mode");
1064                 write_string(env, get_mode_name(mode));
1065                 write_mode_arithmetic(env, get_mode_arithmetic(mode));
1066                 write_unsigned(env, get_mode_exponent_size(mode));
1067                 write_unsigned(env, get_mode_mantissa_size(mode));
1068         } else {
1069                 panic("Can't write internal modes");
1070         }
1071 }
1072
1073 static void write_modes(write_env_t *env)
1074 {
1075         size_t n_modes = ir_get_n_modes();
1076         size_t i;
1077
1078         write_symbol(env, "modes");
1079         fputs("{\n", env->file);
1080
1081         for (i = 0; i < n_modes; i++) {
1082                 ir_mode *mode = ir_get_mode(i);
1083                 if (!mode_is_int(mode) && !mode_is_reference(mode)
1084                     && !mode_is_float(mode)) {
1085                     /* skip internal modes */
1086                     continue;
1087                 }
1088                 fputc('\t', env->file);
1089                 write_mode(env, mode);
1090                 fputc('\n', env->file);
1091         }
1092
1093         fputs("}\n\n", env->file);
1094 }
1095
1096 static void write_program(write_env_t *env)
1097 {
1098         ir_segment_t s;
1099         size_t n_asms = get_irp_n_asms();
1100         size_t i;
1101
1102         write_symbol(env, "program");
1103         write_scope_begin(env);
1104         if (irp_prog_name_is_set()) {
1105                 fputc('\t', env->file);
1106                 write_symbol(env, "name");
1107                 write_string(env, get_irp_name());
1108                 fputc('\n', env->file);
1109         }
1110
1111         for (s = IR_SEGMENT_FIRST; s <= IR_SEGMENT_LAST; ++s) {
1112                 ir_type *segment_type = get_segment_type(s);
1113                 fputc('\t', env->file);
1114                 write_symbol(env, "segment_type");
1115                 write_symbol(env, get_segment_name(s));
1116                 if (segment_type == NULL) {
1117                         write_symbol(env, "NULL");
1118                 } else {
1119                         write_type_ref(env, segment_type);
1120                 }
1121                 fputc('\n', env->file);
1122         }
1123
1124         for (i = 0; i < n_asms; ++i) {
1125                 ident *asm_text = get_irp_asm(i);
1126                 fputc('\t', env->file);
1127                 write_symbol(env, "asm");
1128                 write_ident(env, asm_text);
1129                 fputc('\n', env->file);
1130         }
1131         write_scope_end(env);
1132 }
1133
1134 int ir_export(const char *filename)
1135 {
1136         FILE *file = fopen(filename, "wt");
1137         int   res  = 0;
1138         if (file == NULL) {
1139                 perror(filename);
1140                 return 1;
1141         }
1142
1143         ir_export_file(file);
1144         res = ferror(file);
1145         fclose(file);
1146         return res;
1147 }
1148
1149 static void write_node_cb(ir_node *node, void *ctx)
1150 {
1151         write_env_t *env = (write_env_t*)ctx;
1152         write_node(node, env);
1153 }
1154
1155 static void write_typegraph(write_env_t *env)
1156 {
1157         size_t n_types = get_irp_n_types();
1158         size_t i;
1159
1160         write_symbol(env, "typegraph");
1161         write_scope_begin(env);
1162         irp_reserve_resources(irp, IRP_RESOURCE_TYPE_VISITED);
1163         inc_master_type_visited();
1164         for (i = 0; i < n_types; ++i) {
1165                 ir_type *type = get_irp_type(i);
1166                 write_type(env, type);
1167         }
1168         irp_free_resources(irp, IRP_RESOURCE_TYPE_VISITED);
1169         write_scope_end(env);
1170 }
1171
1172 static void write_irg(write_env_t *env, ir_graph *irg)
1173 {
1174         write_symbol(env, "irg");
1175         write_entity_ref(env, get_irg_entity(irg));
1176         write_type_ref(env, get_irg_frame_type(irg));
1177         write_inline_property(env, get_irg_inline_property(irg));
1178         write_unsigned(env, get_irg_additional_properties(irg));
1179         write_scope_begin(env);
1180         ir_reserve_resources(irg, IR_RESOURCE_IRN_VISITED);
1181         inc_irg_visited(irg);
1182         assert(pdeq_empty(env->write_queue));
1183         pdeq_putr(env->write_queue, irg->anchor);
1184         do {
1185                 ir_node *node = (ir_node*) pdeq_getl(env->write_queue);
1186                 write_node_recursive(node, env);
1187         } while (!pdeq_empty(env->write_queue));
1188         ir_free_resources(irg, IR_RESOURCE_IRN_VISITED);
1189         write_scope_end(env);
1190 }
1191
1192 /* Exports the whole irp to the given file in a textual form. */
1193 void ir_export_file(FILE *file)
1194 {
1195         write_env_t my_env;
1196         write_env_t *env = &my_env;
1197         size_t i, n_irgs = get_irp_n_irgs();
1198
1199         memset(env, 0, sizeof(*env));
1200         env->file        = file;
1201         env->write_queue = new_pdeq();
1202
1203         writers_init();
1204         write_modes(env);
1205
1206         write_typegraph(env);
1207
1208         for (i = 0; i < n_irgs; i++) {
1209                 ir_graph *irg = get_irp_irg(i);
1210                 write_irg(env, irg);
1211         }
1212
1213         write_symbol(env, "constirg");
1214         write_node_ref(env, get_const_code_irg()->current_block);
1215         write_scope_begin(env);
1216         walk_const_code(NULL, write_node_cb, env);
1217         write_scope_end(env);
1218
1219         write_program(env);
1220
1221         del_pdeq(env->write_queue);
1222 }
1223
1224
1225
1226 static void read_c(read_env_t *env)
1227 {
1228         int c = fgetc(env->file);
1229         env->c = c;
1230         if (c == '\n')
1231                 env->line++;
1232 }
1233
1234 /** Returns the first non-whitespace character or EOF. **/
1235 static void skip_ws(read_env_t *env)
1236 {
1237         while (true) {
1238                 switch (env->c) {
1239                 case ' ':
1240                 case '\t':
1241                 case '\n':
1242                 case '\r':
1243                         read_c(env);
1244                         continue;
1245
1246                 default:
1247                         return;
1248                 }
1249         }
1250 }
1251
1252 static void skip_to(read_env_t *env, char to_ch)
1253 {
1254         while (env->c != to_ch && env->c != EOF) {
1255                 read_c(env);
1256         }
1257 }
1258
1259 static bool expect_char(read_env_t *env, char ch)
1260 {
1261         skip_ws(env);
1262         if (env->c != ch) {
1263                 parse_error(env, "Unexpected char '%c', expected '%c'\n",
1264                             env->c, ch);
1265                 return false;
1266         }
1267         read_c(env);
1268         return true;
1269 }
1270
1271 #define EXPECT(c) if (expect_char(env, (c))) {} else return
1272
1273 static char *read_word(read_env_t *env)
1274 {
1275         skip_ws(env);
1276
1277         assert(obstack_object_size(&env->obst) == 0);
1278         while (true) {
1279                 int c = env->c;
1280                 switch (c) {
1281                 case EOF:
1282                 case ' ':
1283                 case '\t':
1284                 case '\n':
1285                 case '\r':
1286                         goto endofword;
1287
1288                 default:
1289                         obstack_1grow(&env->obst, c);
1290                         break;
1291                 }
1292                 read_c(env);
1293         }
1294
1295 endofword:
1296         obstack_1grow(&env->obst, '\0');
1297         return (char*)obstack_finish(&env->obst);
1298 }
1299
1300 static char *read_string(read_env_t *env)
1301 {
1302         skip_ws(env);
1303         if (env->c != '"') {
1304                 parse_error(env, "Expected string, got '%c'\n", env->c);
1305                 exit(1);
1306         }
1307         read_c(env);
1308
1309         assert(obstack_object_size(&env->obst) == 0);
1310         while (env->c != '"') {
1311                 if (env->c == EOF) {
1312                         parse_error(env, "Unexpected EOF while parsing string\n");
1313                         exit(1);
1314                 }
1315
1316                 if (env->c == '\\') {
1317                         read_c(env);
1318                         switch (env->c) {
1319                         case 'n':
1320                                 obstack_1grow(&env->obst, '\n');
1321                                 break;
1322                         case '"':
1323                         case '\\':
1324                                 obstack_1grow(&env->obst, env->c);
1325                                 break;
1326                         default:
1327                                 parse_error(env, "Unknown escape sequence '\\%c'\n", env->c);
1328                                 exit(1);
1329                         }
1330                 } else {
1331                         obstack_1grow(&env->obst, env->c);
1332                 }
1333                 read_c(env);
1334         }
1335         read_c(env);
1336         obstack_1grow(&env->obst, 0);
1337
1338         return (char*)obstack_finish(&env->obst);
1339 }
1340
1341 static ident *read_ident(read_env_t *env)
1342 {
1343         char  *str = read_string(env);
1344         ident *res = new_id_from_str(str);
1345         obstack_free(&env->obst, str);
1346         return res;
1347 }
1348
1349 static ident *read_symbol(read_env_t *env)
1350 {
1351         char  *str = read_word(env);
1352         ident *res = new_id_from_str(str);
1353         obstack_free(&env->obst, str);
1354         return res;
1355 }
1356
1357 /*
1358  * reads a "quoted string" or alternatively the token NULL
1359  */
1360 static char *read_string_null(read_env_t *env)
1361 {
1362         skip_ws(env);
1363         if (env->c == 'N') {
1364                 char *str = read_word(env);
1365                 if (strcmp(str, "NULL") == 0) {
1366                         obstack_free(&env->obst, str);
1367                         return NULL;
1368                 }
1369         } else if (env->c == '"') {
1370                 return read_string(env);
1371         }
1372
1373         parse_error(env, "Expected \"string\" or NULL\n");
1374         exit(1);
1375 }
1376
1377 static ident *read_ident_null(read_env_t *env)
1378 {
1379         ident *res;
1380         char  *str = read_string_null(env);
1381         if (str == NULL)
1382                 return NULL;
1383
1384         res = new_id_from_str(str);
1385         obstack_free(&env->obst, str);
1386         return res;
1387 }
1388
1389 static long read_long(read_env_t *env)
1390 {
1391         long  result;
1392         char *str;
1393
1394         skip_ws(env);
1395         if (!isdigit(env->c) && env->c != '-') {
1396                 parse_error(env, "Expected number, got '%c'\n", env->c);
1397                 exit(1);
1398         }
1399
1400         assert(obstack_object_size(&env->obst) == 0);
1401         do {
1402                 obstack_1grow(&env->obst, env->c);
1403                 read_c(env);
1404         } while (isdigit(env->c));
1405         obstack_1grow(&env->obst, 0);
1406
1407         str = (char*)obstack_finish(&env->obst);
1408         result = atol(str);
1409         obstack_free(&env->obst, str);
1410
1411         return result;
1412 }
1413
1414 static int read_int(read_env_t *env)
1415 {
1416         return (int) read_long(env);
1417 }
1418
1419 static unsigned read_unsigned(read_env_t *env)
1420 {
1421         return (unsigned) read_long(env);
1422 }
1423
1424 static size_t read_size_t(read_env_t *env)
1425 {
1426         /* FIXME */
1427         return (size_t) read_unsigned(env);
1428 }
1429
1430 static void expect_list_begin(read_env_t *env)
1431 {
1432         skip_ws(env);
1433         if (env->c != '[') {
1434                 parse_error(env, "Expected list, got '%c'\n", env->c);
1435                 exit(1);
1436         }
1437         read_c(env);
1438 }
1439
1440 static bool list_has_next(read_env_t *env)
1441 {
1442         if (feof(env->file)) {
1443                 parse_error(env, "Unexpected EOF while reading list");
1444                 exit(1);
1445         }
1446         skip_ws(env);
1447         if (env->c == ']') {
1448                 read_c(env);
1449                 return false;
1450         }
1451
1452         return true;
1453 }
1454
1455 static void *get_id(read_env_t *env, long id)
1456 {
1457         id_entry key, *entry;
1458         key.id = id;
1459
1460         entry = (id_entry*)set_find(env->idset, &key, sizeof(key), (unsigned) id);
1461         return entry ? entry->elem : NULL;
1462 }
1463
1464 static void set_id(read_env_t *env, long id, void *elem)
1465 {
1466         id_entry key;
1467         key.id = id;
1468         key.elem = elem;
1469         set_insert(env->idset, &key, sizeof(key), (unsigned) id);
1470 }
1471
1472 static ir_node *get_node_or_null(read_env_t *env, long nodenr)
1473 {
1474         ir_node *node = (ir_node *) get_id(env, nodenr);
1475         if (node && node->kind != k_ir_node) {
1476                 parse_error(env, "Irn ID %ld collides with something else\n",
1477                             nodenr);
1478                 return NULL;
1479         }
1480         return node;
1481 }
1482
1483 static ir_type *get_type(read_env_t *env, long typenr)
1484 {
1485         ir_type *type = (ir_type *) get_id(env, typenr);
1486         if (type == NULL) {
1487                 parse_error(env, "Type %ld not defined (yet?)\n", typenr);
1488                 return get_unknown_type();
1489         }
1490         if (type->kind != k_type) {
1491                 parse_error(env, "Object %ld is not a type (but should be)\n", typenr);
1492                 return get_unknown_type();
1493         }
1494         return type;
1495 }
1496
1497 static ir_type *read_type_ref(read_env_t *env)
1498 {
1499         char *str = read_word(env);
1500         if (strcmp(str, "none") == 0) {
1501                 obstack_free(&env->obst, str);
1502                 return get_none_type();
1503         }
1504         if (strcmp(str, "unknown") == 0) {
1505                 obstack_free(&env->obst, str);
1506                 return get_unknown_type();
1507         }
1508         if (strcmp(str, "code") == 0) {
1509                 obstack_free(&env->obst, str);
1510                 return get_code_type();
1511         }
1512         long nr = atol(str);
1513         obstack_free(&env->obst, str);
1514
1515         return get_type(env, nr);
1516 }
1517
1518 static ir_entity *create_error_entity(void)
1519 {
1520         ir_entity *res = new_entity(get_glob_type(), new_id_from_str("error"),
1521                                     get_unknown_type());
1522         return res;
1523 }
1524
1525 static ir_entity *get_entity(read_env_t *env, long entnr)
1526 {
1527         ir_entity *entity = (ir_entity *) get_id(env, entnr);
1528         if (entity == NULL) {
1529                 parse_error(env, "unknown entity: %ld\n", entnr);
1530                 return create_error_entity();
1531         }
1532         if (entity->kind != k_entity) {
1533                 parse_error(env, "Object %ld is not an entity (but should be)\n",
1534                             entnr);
1535                 return create_error_entity();
1536         }
1537
1538         return entity;
1539 }
1540
1541 static ir_entity *read_entity_ref(read_env_t *env)
1542 {
1543         long nr = read_long(env);
1544         return get_entity(env, nr);
1545 }
1546
1547 static ir_mode *read_mode_ref(read_env_t *env)
1548 {
1549         char  *str = read_string(env);
1550         size_t n   = ir_get_n_modes();
1551         size_t i;
1552
1553         for (i = 0; i < n; i++) {
1554                 ir_mode *mode = ir_get_mode(i);
1555                 if (strcmp(str, get_mode_name(mode)) == 0) {
1556                         obstack_free(&env->obst, str);
1557                         return mode;
1558                 }
1559         }
1560
1561         parse_error(env, "unknown mode \"%s\"\n", str);
1562         return mode_ANY;
1563 }
1564
1565 static const char *get_typetag_name(typetag_t typetag)
1566 {
1567         switch (typetag) {
1568         case tt_align:               return "align";
1569         case tt_builtin_kind:        return "builtin kind";
1570         case tt_cond_jmp_predicate:  return "cond_jmp_predicate";
1571         case tt_initializer:         return "initializer kind";
1572         case tt_irg_inline_property: return "irg_inline_property";
1573         case tt_keyword:             return "keyword";
1574         case tt_linkage:             return "linkage";
1575         case tt_mode_arithmetic:     return "mode_arithmetic";
1576         case tt_pin_state:           return "pin state";
1577         case tt_segment:             return "segment";
1578         case tt_throws:              return "throws";
1579         case tt_tpo:                 return "type";
1580         case tt_type_state:          return "type state";
1581         case tt_visibility:          return "visibility";
1582         case tt_volatility:          return "volatility";
1583         case tt_where_alloc:         return "where alloc";
1584         }
1585         return "<UNKNOWN>";
1586 }
1587
1588 /**
1589  * Read and decode an enum constant.
1590  */
1591 static unsigned read_enum(read_env_t *env, typetag_t typetag)
1592 {
1593         char     *str  = read_word(env);
1594         unsigned  code = symbol(str, typetag);
1595
1596         if (code != SYMERROR) {
1597                 obstack_free(&env->obst, str);
1598                 return code;
1599         }
1600
1601         parse_error(env, "invalid %s: \"%s\"\n", get_typetag_name(typetag), str);
1602         return 0;
1603 }
1604
1605 static ir_align read_align(read_env_t *env)
1606 {
1607         return (ir_align)read_enum(env, tt_align);
1608 }
1609
1610 static ir_builtin_kind read_builtin_kind(read_env_t *env)
1611 {
1612         return (ir_builtin_kind)read_enum(env, tt_builtin_kind);
1613 }
1614
1615 static cond_jmp_predicate read_cond_jmp_predicate(read_env_t *env)
1616 {
1617         return (cond_jmp_predicate)read_enum(env, tt_cond_jmp_predicate);
1618 }
1619
1620 static ir_initializer_kind_t read_initializer_kind(read_env_t *env)
1621 {
1622         return (ir_initializer_kind_t)read_enum(env, tt_initializer);
1623 }
1624
1625 static ir_mode_arithmetic read_mode_arithmetic(read_env_t *env)
1626 {
1627         return (ir_mode_arithmetic)read_enum(env, tt_mode_arithmetic);
1628 }
1629
1630 static op_pin_state read_pin_state(read_env_t *env)
1631 {
1632         return (op_pin_state)read_enum(env, tt_pin_state);
1633 }
1634
1635 static ir_type_state read_type_state(read_env_t *env)
1636 {
1637         return (ir_type_state)read_enum(env, tt_type_state);
1638 }
1639
1640 static ir_visibility read_visibility(read_env_t *env)
1641 {
1642         return (ir_visibility)read_enum(env, tt_visibility);
1643 }
1644
1645 static ir_linkage read_linkage(read_env_t *env)
1646 {
1647         return (ir_linkage)read_enum(env, tt_linkage);
1648 }
1649
1650 static ir_volatility read_volatility(read_env_t *env)
1651 {
1652         return (ir_volatility)read_enum(env, tt_volatility);
1653 }
1654
1655 static ir_where_alloc read_where_alloc(read_env_t *env)
1656 {
1657         return (ir_where_alloc)read_enum(env, tt_where_alloc);
1658 }
1659
1660 static bool read_throws(read_env_t *env)
1661 {
1662         return (bool)read_enum(env, tt_throws);
1663 }
1664
1665 static keyword_t read_keyword(read_env_t *env)
1666 {
1667         return (keyword_t)read_enum(env, tt_keyword);
1668 }
1669
1670 static irg_inline_property read_inline_property(read_env_t *env)
1671 {
1672         return (irg_inline_property)read_enum(env, tt_irg_inline_property);
1673 }
1674
1675 static ir_relation read_relation(read_env_t *env)
1676 {
1677         return (ir_relation)read_long(env);
1678 }
1679
1680 static ir_tarval *read_tarval(read_env_t *env)
1681 {
1682         ir_mode   *tvmode = read_mode_ref(env);
1683         char      *str    = read_word(env);
1684         ir_tarval *tv;
1685         if (strcmp(str, "bad") == 0)
1686                 return tarval_bad;
1687         tv = new_tarval_from_str(str, strlen(str), tvmode);
1688         if (tv == tarval_bad)
1689                 parse_error(env, "problem while parsing tarval '%s'\n", str);
1690         obstack_free(&env->obst, str);
1691
1692         return tv;
1693 }
1694
1695 static ir_switch_table *read_switch_table(read_env_t *env)
1696 {
1697         size_t           n_entries = read_size_t(env);
1698         ir_switch_table *table     = ir_new_switch_table(env->irg, n_entries);
1699         size_t           i;
1700
1701         for (i = 0; i < n_entries; ++i) {
1702                 long       pn  = read_long(env);
1703                 ir_tarval *min = read_tarval(env);
1704                 ir_tarval *max = read_tarval(env);
1705                 ir_switch_table_set(table, i, min, max, pn);
1706         }
1707         return table;
1708 }
1709
1710 static ir_initializer_t *read_initializer(read_env_t *env)
1711 {
1712         ir_initializer_kind_t ini_kind = read_initializer_kind(env);
1713
1714         switch (ini_kind) {
1715         case IR_INITIALIZER_CONST: {
1716                 long nr = read_long(env);
1717                 ir_node *node = get_node_or_null(env, nr);
1718                 ir_initializer_t *initializer = create_initializer_const(node);
1719                 if (node == NULL) {
1720                         delayed_initializer_t di;
1721                         di.initializer = initializer;
1722                         di.node_nr     = nr;
1723                         ARR_APP1(delayed_initializer_t, env->delayed_initializers, di);
1724                 }
1725                 return initializer;
1726         }
1727
1728         case IR_INITIALIZER_TARVAL:
1729                 return create_initializer_tarval(read_tarval(env));
1730
1731         case IR_INITIALIZER_NULL:
1732                 return get_initializer_null();
1733
1734         case IR_INITIALIZER_COMPOUND: {
1735                 size_t i, n = read_size_t(env);
1736                 ir_initializer_t *ini = create_initializer_compound(n);
1737                 for (i = 0; i < n; i++) {
1738                         ir_initializer_t *curini = read_initializer(env);
1739                         set_initializer_compound_value(ini, i, curini);
1740                 }
1741                 return ini;
1742         }
1743         }
1744
1745         panic("Unknown initializer kind");
1746 }
1747
1748 /** Reads a type description and remembers it by its id. */
1749 static void read_type(read_env_t *env)
1750 {
1751         long           typenr = read_long(env);
1752         tp_opcode      tpop   = (tp_opcode) read_enum(env, tt_tpo);
1753         unsigned       size   = (unsigned) read_long(env);
1754         unsigned       align  = (unsigned) read_long(env);
1755         ir_type_state  state  = read_type_state(env);
1756         unsigned       flags  = (unsigned) read_long(env);
1757         ir_type       *type;
1758
1759         switch (tpop) {
1760         case tpo_array: {
1761                 size_t     n_dimensions = read_size_t(env);
1762                 ir_type   *elemtype     = read_type_ref(env);
1763                 size_t     i;
1764                 ir_entity *element_entity;
1765                 long       element_entity_nr;
1766
1767                 type = new_type_array(n_dimensions, elemtype);
1768                 for (i = 0; i < n_dimensions; i++) {
1769                         char *str = read_word(env);
1770                         if (strcmp(str, "unknown") != 0) {
1771                                 long lowerbound = atol(str);
1772                                 set_array_lower_bound_int(type, i, lowerbound);
1773                         }
1774                         obstack_free(&env->obst, str);
1775
1776                         str = read_word(env);
1777                         if (strcmp(str, "unknown") != 0) {
1778                                 long upperbound = atol(str);
1779                                 set_array_upper_bound_int(type, i, upperbound);
1780                         }
1781                         obstack_free(&env->obst, str);
1782                 }
1783
1784                 element_entity_nr = read_long(env);
1785                 element_entity = get_array_element_entity(type);
1786                 set_id(env, element_entity_nr, element_entity);
1787
1788                 set_type_size_bytes(type, size);
1789                 goto finish_type;
1790         }
1791
1792         case tpo_class: {
1793                 ident *id = read_ident_null(env);
1794
1795                 if (typenr == (long) IR_SEGMENT_GLOBAL)
1796                         type = get_glob_type();
1797                 else
1798                         type = new_type_class(id);
1799                 set_type_size_bytes(type, size);
1800                 goto finish_type;
1801         }
1802
1803         case tpo_method: {
1804                 unsigned                  callingconv = read_unsigned(env);
1805                 mtp_additional_properties addprops
1806                         = (mtp_additional_properties) read_long(env);
1807                 size_t nparams  = read_size_t(env);
1808                 size_t nresults = read_size_t(env);
1809                 size_t i;
1810                 int    variadicity;
1811
1812                 type = new_type_method(nparams, nresults);
1813
1814                 for (i = 0; i < nparams; i++) {
1815                         long ptypenr = read_long(env);
1816                         ir_type *paramtype = get_type(env, ptypenr);
1817
1818                         set_method_param_type(type, i, paramtype);
1819                 }
1820                 for (i = 0; i < nresults; i++) {
1821                         long ptypenr = read_long(env);
1822                         ir_type *restype = get_type(env, ptypenr);
1823
1824                         set_method_res_type(type, i, restype);
1825                 }
1826
1827                 variadicity = (int) read_long(env);
1828                 set_method_variadicity(type, variadicity);
1829
1830                 set_method_calling_convention(type, callingconv);
1831                 set_method_additional_properties(type, addprops);
1832                 goto finish_type;
1833         }
1834
1835         case tpo_pointer: {
1836                 ir_mode *mode     = read_mode_ref(env);
1837                 ir_type *pointsto = get_type(env, read_long(env));
1838                 type = new_type_pointer(pointsto);
1839                 set_type_mode(type, mode);
1840                 goto finish_type;
1841         }
1842
1843         case tpo_primitive: {
1844                 ir_mode *mode = read_mode_ref(env);
1845                 ir_type *base_type = read_type_ref(env);
1846                 type = new_type_primitive(mode);
1847                 if (base_type != get_none_type()) {
1848                         set_primitive_base_type(type, base_type);
1849                 }
1850                 goto finish_type;
1851         }
1852
1853         case tpo_struct: {
1854                 ident *id = read_ident_null(env);
1855                 type = new_type_struct(id);
1856                 set_type_size_bytes(type, size);
1857                 goto finish_type;
1858         }
1859
1860         case tpo_union: {
1861                 ident *id = read_ident_null(env);
1862                 type = new_type_union(id);
1863                 set_type_size_bytes(type, size);
1864                 goto finish_type;
1865         }
1866
1867         case tpo_none:
1868         case tpo_code:
1869         case tpo_unknown:
1870         case tpo_enumeration:
1871         case tpo_uninitialized:
1872                 parse_error(env, "can't import this type kind (%d)", tpop);
1873                 return;
1874         }
1875         parse_error(env, "unknown type kind: \"%d\"\n", tpop);
1876         skip_to(env, '\n');
1877         return;
1878
1879 finish_type:
1880         set_type_alignment_bytes(type, align);
1881         type->flags = flags;
1882
1883         if (state == layout_fixed)
1884                 ARR_APP1(ir_type *, env->fixedtypes, type);
1885
1886         set_id(env, typenr, type);
1887 }
1888
1889 static void read_unknown_entity(read_env_t *env)
1890 {
1891         long       entnr  = read_long(env);
1892         ir_entity *entity = get_unknown_entity();
1893         set_id(env, entnr, entity);
1894 }
1895
1896 /** Reads an entity description and remembers it by its id. */
1897 static void read_entity(read_env_t *env, ir_entity_kind kind)
1898 {
1899         long           entnr      = read_long(env);
1900         ident         *name       = NULL;
1901         ident         *ld_name    = NULL;
1902         ir_visibility  visibility = ir_visibility_external;
1903         ir_linkage     linkage    = IR_LINKAGE_DEFAULT;
1904         ir_type       *owner      = NULL;
1905         ir_entity     *entity     = NULL;
1906         int            compiler_generated;
1907         ir_volatility  volatility;
1908         const char    *str;
1909         ir_type       *type;
1910
1911         if (kind != IR_ENTITY_LABEL && kind != IR_ENTITY_PARAMETER) {
1912                 name    = read_ident(env);
1913                 ld_name = read_ident_null(env);
1914         }
1915
1916         visibility = read_visibility(env);
1917         expect_list_begin(env);
1918         while (list_has_next(env)) {
1919                 linkage |= read_linkage(env);
1920         }
1921
1922         type = read_type_ref(env);
1923         if (kind != IR_ENTITY_LABEL)
1924                 owner = read_type_ref(env);
1925
1926         compiler_generated = read_long(env) != 0;
1927         volatility         = read_volatility(env);
1928
1929         switch (kind) {
1930         case IR_ENTITY_NORMAL:
1931                 entity = new_entity(owner, name, type);
1932                 if (ld_name != NULL)
1933                         set_entity_ld_ident(entity, ld_name);
1934                 str = read_word(env);
1935                 if (strcmp(str, "initializer") == 0) {
1936                         ir_initializer_t *initializer = read_initializer(env);
1937                         if (initializer != NULL)
1938                                 set_entity_initializer(entity, initializer);
1939                 } else if (strcmp(str, "none") == 0) {
1940                         /* do nothing */
1941                 } else {
1942                         parse_error(env, "expected 'initializer' or 'none' got '%s'\n", str);
1943                 }
1944                 break;
1945         case IR_ENTITY_COMPOUND_MEMBER:
1946                 entity = new_entity(owner, name, type);
1947                 if (ld_name != NULL)
1948                         set_entity_ld_ident(entity, ld_name);
1949                 set_entity_offset(entity, (int) read_long(env));
1950                 set_entity_offset_bits_remainder(entity, (unsigned char) read_long(env));
1951                 break;
1952         case IR_ENTITY_METHOD:
1953                 entity = new_entity(owner, name, type);
1954                 if (ld_name != NULL)
1955                         set_entity_ld_ident(entity, ld_name);
1956                 break;
1957         case IR_ENTITY_PARAMETER: {
1958                 char  *str = read_word(env);
1959                 size_t parameter_number;
1960                 if (strcmp(str, "va_start") == 0) {
1961                         parameter_number = IR_VA_START_PARAMETER_NUMBER;
1962                 } else {
1963                         parameter_number = atol(str);
1964                 }
1965                 obstack_free(&env->obst, str);
1966                 entity = new_parameter_entity(owner, parameter_number, type);
1967                 break;
1968         }
1969         case IR_ENTITY_LABEL: {
1970                 ir_label_t nr = get_irp_next_label_nr();
1971                 entity = new_label_entity(nr);
1972                 break;
1973         case IR_ENTITY_UNKNOWN:
1974                 panic("read_entity with IR_ENTITY_UNKNOWN?");
1975         }
1976         }
1977
1978         set_entity_compiler_generated(entity, compiler_generated);
1979         set_entity_volatility(entity, volatility);
1980         set_entity_visibility(entity, visibility);
1981         set_entity_linkage(entity, linkage);
1982
1983         if (owner != NULL && is_Array_type(owner)) {
1984                 set_array_element_entity(owner, entity);
1985         }
1986
1987         set_id(env, entnr, entity);
1988 }
1989
1990 /** Parses the whole type graph. */
1991 static void read_typegraph(read_env_t *env)
1992 {
1993         ir_graph *old_irg = env->irg;
1994
1995         EXPECT('{');
1996
1997         env->irg = get_const_code_irg();
1998
1999         /* parse all types first */
2000         while (true) {
2001                 keyword_t kwkind;
2002                 skip_ws(env);
2003                 if (env->c == '}') {
2004                         read_c(env);
2005                         break;
2006                 }
2007
2008                 kwkind = read_keyword(env);
2009                 switch (kwkind) {
2010                 case kw_type:
2011                         read_type(env);
2012                         break;
2013
2014                 case kw_entity:
2015                         read_entity(env, IR_ENTITY_NORMAL);
2016                         break;
2017                 case kw_label:
2018                         read_entity(env, IR_ENTITY_LABEL);
2019                         break;
2020                 case kw_method:
2021                         read_entity(env, IR_ENTITY_METHOD);
2022                         break;
2023                 case kw_compound_member:
2024                         read_entity(env, IR_ENTITY_COMPOUND_MEMBER);
2025                         break;
2026                 case kw_parameter:
2027                         read_entity(env, IR_ENTITY_PARAMETER);
2028                         break;
2029                 case kw_unknown:
2030                         read_unknown_entity(env);
2031                         break;
2032                 default:
2033                         parse_error(env, "type graph element not supported yet: %d\n", kwkind);
2034                         skip_to(env, '\n');
2035                         break;
2036                 }
2037         }
2038         env->irg = old_irg;
2039 }
2040
2041 /**
2042  * Read a node reference and return the node for it. This assumes that the node
2043  * was previously read. This is fine for all normal nodes.
2044  * (Note: that we "break" loops by having special code for phi, block or anchor
2045  *  nodes in place, firm guarantees us that a loop in the graph always contains
2046  *  a phi, block or anchor node)
2047  */
2048 static ir_node *read_node_ref(read_env_t *env)
2049 {
2050         long     nr   = read_long(env);
2051         ir_node *node = get_node_or_null(env, nr);
2052         if (node == NULL) {
2053                 parse_error(env, "node %ld not defined (yet?)\n", nr);
2054                 return new_r_Bad(env->irg, mode_ANY);
2055         }
2056         return node;
2057 }
2058
2059 static int read_preds(read_env_t *env)
2060 {
2061         expect_list_begin(env);
2062         assert(obstack_object_size(&env->preds_obst) == 0);
2063         while (list_has_next(env)) {
2064                 ir_node *pred = read_node_ref(env);
2065                 obstack_grow(&env->preds_obst, &pred, sizeof(pred));
2066         }
2067         return obstack_object_size(&env->preds_obst) / sizeof(ir_node*);
2068 }
2069
2070 static void read_preds_delayed(read_env_t *env, ir_node *node)
2071 {
2072         int             n_preds = 0;
2073         delayed_pred_t *d;
2074
2075         expect_list_begin(env);
2076         assert(obstack_object_size(&env->preds_obst) == 0);
2077         obstack_blank(&env->preds_obst, sizeof(delayed_pred_t));
2078         while (list_has_next(env)) {
2079                 long pred_nr = read_long(env);
2080                 obstack_grow(&env->preds_obst, &pred_nr, sizeof(pred_nr));
2081                 ++n_preds;
2082         }
2083         d          = (delayed_pred_t*) obstack_finish(&env->preds_obst);
2084         d->node    = node;
2085         d->n_preds = n_preds;
2086
2087         ARR_APP1(const delayed_pred_t*, env->delayed_preds, d);
2088 }
2089
2090 static ir_node *read_ASM(read_env_t *env)
2091 {
2092         int                n_in;
2093         ir_node          **in;
2094         ir_node           *newnode;
2095         ir_asm_constraint *input_constraints  = NEW_ARR_F(ir_asm_constraint, 0);
2096         ir_asm_constraint *output_constraints = NEW_ARR_F(ir_asm_constraint, 0);
2097         ident            **clobbers           = NEW_ARR_F(ident*, 0);
2098         ir_node           *block              = read_node_ref(env);
2099         op_pin_state       pin_state;
2100
2101         ident *asm_text = read_ident(env);
2102
2103         expect_list_begin(env);
2104         while (list_has_next(env)) {
2105                 ir_asm_constraint constraint;
2106                 constraint.pos        = read_unsigned(env);
2107                 constraint.constraint = read_ident(env);
2108                 constraint.mode       = read_mode_ref(env);
2109                 ARR_APP1(ir_asm_constraint, input_constraints, constraint);
2110         }
2111
2112         expect_list_begin(env);
2113         while (list_has_next(env)) {
2114                 ir_asm_constraint constraint;
2115                 constraint.pos        = read_unsigned(env);
2116                 constraint.constraint = read_ident(env);
2117                 constraint.mode       = read_mode_ref(env);
2118                 ARR_APP1(ir_asm_constraint, output_constraints, constraint);
2119         }
2120
2121         expect_list_begin(env);
2122         while (list_has_next(env)) {
2123                 ident *clobber = read_ident(env);
2124                 ARR_APP1(ident*, clobbers, clobber);
2125         }
2126
2127         pin_state = read_pin_state(env);
2128
2129         n_in = read_preds(env);
2130         in   = obstack_finish(&env->preds_obst);
2131
2132         if (ARR_LEN(input_constraints) != (size_t)n_in) {
2133                 parse_error(env, "input_constraints != n_in in ir file");
2134                 return new_r_Bad(env->irg, mode_T);
2135         }
2136
2137         newnode = new_r_ASM(block, n_in, in,
2138                 input_constraints, ARR_LEN(output_constraints),
2139                 output_constraints, ARR_LEN(clobbers),
2140                 clobbers, asm_text);
2141         set_irn_pinned(newnode, pin_state);
2142         obstack_free(&env->preds_obst, in);
2143         DEL_ARR_F(clobbers);
2144         DEL_ARR_F(output_constraints);
2145         DEL_ARR_F(input_constraints);
2146         return newnode;
2147 }
2148
2149 static ir_node *read_Phi(read_env_t *env)
2150 {
2151         ir_node *block = read_node_ref(env);
2152         ir_mode *mode  = read_mode_ref(env);
2153         ir_node *res   = new_r_Phi(block, 0, NULL, mode);
2154         read_preds_delayed(env, res);
2155         return res;
2156 }
2157
2158 static ir_node *read_Block(read_env_t *env)
2159 {
2160         ir_node *res = new_r_Block(env->irg, 0, NULL);
2161         read_preds_delayed(env, res);
2162         return res;
2163 }
2164
2165 static ir_node *read_labeled_Block(read_env_t *env)
2166 {
2167         ir_node   *res    = new_r_Block(env->irg, 0, NULL);
2168         ir_entity *entity = read_entity_ref(env);
2169         read_preds_delayed(env, res);
2170         set_Block_entity(res, entity);
2171         return res;
2172 }
2173
2174 static ir_node *read_SymConst(read_env_t *env)
2175 {
2176         ir_mode   *mode   = read_mode_ref(env);
2177         ir_entity *entity = read_entity_ref(env);
2178         ir_node   *res;
2179         symconst_symbol sym;
2180
2181         sym.entity_p = entity;
2182         res = new_r_SymConst(env->irg, mode, sym, symconst_addr_ent);
2183         return res;
2184 }
2185
2186 static ir_node *read_Anchor(read_env_t *env)
2187 {
2188         ir_node *res = new_r_Anchor(env->irg);
2189         read_preds_delayed(env, res);
2190         return res;
2191 }
2192
2193 typedef ir_node* (*read_node_func)(read_env_t *env);
2194 static pmap *node_readers;
2195
2196 static void register_node_reader(ident *ident, read_node_func func)
2197 {
2198         pmap_insert(node_readers, ident, func);
2199 }
2200
2201 static ir_node *read_node(read_env_t *env)
2202 {
2203         ident         *id   = read_symbol(env);
2204         read_node_func func = pmap_get(node_readers, id);
2205         long           nr   = read_long(env);
2206         ir_node       *res;
2207         if (func == NULL) {
2208                 parse_error(env, "Unknown nodetype '%s'", get_id_str(id));
2209                 skip_to(env, '\n');
2210                 res = new_r_Bad(env->irg, mode_ANY);
2211         } else {
2212                 res = func(env);
2213         }
2214         set_id(env, nr, res);
2215         return res;
2216 }
2217
2218 static void readers_init(void)
2219 {
2220         assert(node_readers == NULL);
2221         node_readers = pmap_create();
2222         register_node_reader(new_id_from_str("Anchor"),   read_Anchor);
2223         register_node_reader(new_id_from_str("ASM"),      read_ASM);
2224         register_node_reader(new_id_from_str("Block"),    read_Block);
2225         register_node_reader(new_id_from_str("BlockL"),   read_labeled_Block);
2226         register_node_reader(new_id_from_str("Phi"),      read_Phi);
2227         register_node_reader(new_id_from_str("SymConst"), read_SymConst);
2228         register_generated_node_readers();
2229 }
2230
2231 static void read_graph(read_env_t *env, ir_graph *irg)
2232 {
2233         size_t n_delayed_preds;
2234         size_t i;
2235         env->irg = irg;
2236
2237         env->delayed_preds = NEW_ARR_F(const delayed_pred_t*, 0);
2238
2239         EXPECT('{');
2240         while (true) {
2241                 skip_ws(env);
2242                 if (env->c == '}' || env->c == EOF) {
2243                         read_c(env);
2244                         break;
2245                 }
2246
2247                 read_node(env);
2248         }
2249
2250         /* resolve delayed preds */
2251         n_delayed_preds = ARR_LEN(env->delayed_preds);
2252         for (i = 0; i < n_delayed_preds; ++i) {
2253                 const delayed_pred_t *dp  = env->delayed_preds[i];
2254                 ir_node             **ins = ALLOCAN(ir_node*, dp->n_preds);
2255                 int                   i;
2256                 for (i = 0; i < dp->n_preds; ++i) {
2257                         long     pred_nr = dp->preds[i];
2258                         ir_node *pred    = get_node_or_null(env, pred_nr);
2259                         if (pred == NULL) {
2260                                 parse_error(env, "predecessor %ld of a node not defined\n",
2261                                             pred_nr);
2262                                 goto next_delayed_pred;
2263                         }
2264                         ins[i] = pred;
2265                 }
2266                 set_irn_in(dp->node, dp->n_preds, ins);
2267                 if (is_Anchor(dp->node)) {
2268                         irg_anchors a;
2269                         for (a = anchor_first; a <= anchor_last; ++a) {
2270                                 ir_node *old_anchor = get_irg_anchor(irg, a);
2271                                 ir_node *new_anchor = ins[a];
2272                                 exchange(old_anchor, new_anchor);
2273                         }
2274                 }
2275 next_delayed_pred: ;
2276         }
2277         DEL_ARR_F(env->delayed_preds);
2278         env->delayed_preds = NULL;
2279 }
2280
2281 static ir_graph *read_irg(read_env_t *env)
2282 {
2283         ir_entity          *irgent = get_entity(env, read_long(env));
2284         ir_graph           *irg    = new_ir_graph(irgent, 0);
2285         ir_type            *frame  = read_type_ref(env);
2286         irg_inline_property prop   = read_inline_property(env);
2287         unsigned            props  = read_unsigned(env);
2288         set_irg_frame_type(irg, frame);
2289         set_irg_inline_property(irg, prop);
2290         set_irg_additional_properties(irg, (mtp_additional_properties)props);
2291         read_graph(env, irg);
2292         irg_finalize_cons(irg);
2293         return irg;
2294 }
2295
2296 static void read_modes(read_env_t *env)
2297 {
2298         EXPECT('{');
2299
2300         while (true) {
2301                 keyword_t kwkind;
2302
2303                 skip_ws(env);
2304                 if (env->c == '}' || env->c == EOF) {
2305                         read_c(env);
2306                         break;
2307                 }
2308
2309                 kwkind = read_keyword(env);
2310                 switch (kwkind) {
2311                 case kw_int_mode: {
2312                         const char *name = read_string(env);
2313                         ir_mode_arithmetic arith = read_mode_arithmetic(env);
2314                         int size = read_long(env);
2315                         int sign = read_long(env);
2316                         unsigned modulo_shift = read_long(env);
2317                         new_int_mode(name, arith, size, sign, modulo_shift);
2318                         break;
2319                 }
2320                 case kw_reference_mode: {
2321                         const char *name = read_string(env);
2322                         ir_mode_arithmetic arith = read_mode_arithmetic(env);
2323                         int size = read_long(env);
2324                         unsigned modulo_shift = read_long(env);
2325                         ir_mode *mode = new_reference_mode(name, arith, size, modulo_shift);
2326                         set_reference_mode_signed_eq(mode, read_mode_ref(env));
2327                         set_reference_mode_unsigned_eq(mode, read_mode_ref(env));
2328                         int is_mode_P = read_int(env);
2329                         if (is_mode_P) {
2330                                 set_modeP_data(mode);
2331                                 set_modeP_code(mode);
2332                         }
2333                         break;
2334                 }
2335                 case kw_float_mode: {
2336                         const char *name = read_string(env);
2337                         ir_mode_arithmetic arith = read_mode_arithmetic(env);
2338                         int exponent_size = read_long(env);
2339                         int mantissa_size = read_long(env);
2340                         new_float_mode(name, arith, exponent_size, mantissa_size);
2341                         break;
2342                 }
2343
2344                 default:
2345                         skip_to(env, '\n');
2346                         break;
2347                 }
2348         }
2349 }
2350
2351 static void read_program(read_env_t *env)
2352 {
2353         EXPECT('{');
2354
2355         while (true) {
2356                 keyword_t kwkind;
2357
2358                 skip_ws(env);
2359                 if (env->c == '}') {
2360                         read_c(env);
2361                         break;
2362                 }
2363
2364                 kwkind = read_keyword(env);
2365                 switch (kwkind) {
2366                 case kw_segment_type: {
2367                         ir_segment_t  segment = (ir_segment_t) read_enum(env, tt_segment);
2368                         ir_type      *type    = read_type_ref(env);
2369                         set_segment_type(segment, type);
2370                         break;
2371                 }
2372                 case kw_asm: {
2373                         ident *text = read_ident(env);
2374                         add_irp_asm(text);
2375                         break;
2376                 }
2377                 default:
2378                         parse_error(env, "unexpected keyword %d\n", kwkind);
2379                         skip_to(env, '\n');
2380                 }
2381         }
2382 }
2383
2384 int ir_import(const char *filename)
2385 {
2386         FILE *file = fopen(filename, "rt");
2387         int   res;
2388         if (file == NULL) {
2389                 perror(filename);
2390                 return 1;
2391         }
2392
2393         res = ir_import_file(file, filename);
2394         fclose(file);
2395
2396         return res;
2397 }
2398
2399 int ir_import_file(FILE *input, const char *inputname)
2400 {
2401         read_env_t          myenv;
2402         int                 oldoptimize = get_optimize();
2403         read_env_t         *env         = &myenv;
2404         size_t              i;
2405         size_t              n;
2406         size_t              n_delayed_initializers;
2407
2408         readers_init();
2409         symtbl_init();
2410
2411         memset(env, 0, sizeof(*env));
2412         obstack_init(&env->obst);
2413         obstack_init(&env->preds_obst);
2414         env->idset      = new_set(id_cmp, 128);
2415         env->fixedtypes = NEW_ARR_F(ir_type *, 0);
2416         env->inputname  = inputname;
2417         env->file       = input;
2418         env->line       = 1;
2419         env->delayed_initializers = NEW_ARR_F(delayed_initializer_t, 0);
2420
2421         /* read first character */
2422         read_c(env);
2423
2424         set_optimize(0);
2425
2426         while (true) {
2427                 keyword_t kw;
2428
2429                 skip_ws(env);
2430                 if (env->c == EOF)
2431                         break;
2432
2433                 kw = read_keyword(env);
2434                 switch (kw) {
2435                 case kw_modes:
2436                         read_modes(env);
2437                         break;
2438
2439                 case kw_typegraph:
2440                         read_typegraph(env);
2441                         break;
2442
2443                 case kw_irg:
2444                         read_irg(env);
2445                         break;
2446
2447                 case kw_constirg: {
2448                         ir_graph *constirg = get_const_code_irg();
2449                         long bodyblockid = read_long(env);
2450                         set_id(env, bodyblockid, constirg->current_block);
2451                         read_graph(env, constirg);
2452                         break;
2453                 }
2454
2455                 case kw_program:
2456                         read_program(env);
2457                         break;
2458
2459                 default: {
2460                         parse_error(env, "Unexpected keyword %d at toplevel\n", kw);
2461                         exit(1);
2462                 }
2463                 }
2464         }
2465
2466         n = ARR_LEN(env->fixedtypes);
2467         for (i = 0; i < n; i++)
2468                 set_type_state(env->fixedtypes[i], layout_fixed);
2469
2470         DEL_ARR_F(env->fixedtypes);
2471
2472         /* resolve delayed initializers */
2473         n_delayed_initializers = ARR_LEN(env->delayed_initializers);
2474         for (i = 0; i < n_delayed_initializers; ++i) {
2475                 const delayed_initializer_t *di   = &env->delayed_initializers[i];
2476                 ir_node                     *node = get_node_or_null(env, di->node_nr);
2477                 if (node == NULL) {
2478                         parse_error(env, "node %ld mentioned in an initializer was never defined\n",
2479                                     di->node_nr);
2480                         continue;
2481                 }
2482                 assert(di->initializer->kind == IR_INITIALIZER_CONST);
2483                 di->initializer->consti.value = node;
2484         }
2485         DEL_ARR_F(env->delayed_initializers);
2486         env->delayed_initializers = NULL;
2487
2488         del_set(env->idset);
2489
2490         irp_finalize_cons();
2491
2492         set_optimize(oldoptimize);
2493
2494         obstack_free(&env->preds_obst, NULL);
2495         obstack_free(&env->obst, NULL);
2496
2497         pmap_destroy(node_readers);
2498         node_readers = NULL;
2499
2500         return env->read_errors;
2501 }
2502
2503 #include "gen_irio.inl"