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