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

   1 /*
   2  * Copyright (C) 1995-2009 University of Karlsruhe.  All right reserved.
   3  *
   4  * This file is part of libFirm.
   5  *
   6  * This file may be distributed and/or modified under the terms of the
   7  * GNU General Public License version 2 as published by the Free Software
   8  * Foundation and appearing in the file LICENSE.GPL included in the
   9  * packaging of this file.
  10  *
  11  * Licensees holding valid libFirm Professional Edition licenses may use
  12  * this file in accordance with the libFirm Commercial License.
  13  * Agreement provided with the Software.
  14  *
  15  * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  16  * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17  * PURPOSE.
  18  */
  19
  20 /**
  21  * @file
  22  * @brief   Write textual representation of firm to file.
  23  * @author  Moritz Kroll
  24  * @version $Id$
  25  */
  26 #include "config.h"
  27
  28 #include <string.h>
  29
  30 #include "irio.h"
  31
  32 #include "irnode_t.h"
  33 #include "irprog.h"
  34 #include "irgraph_t.h"
  35 #include "ircons.h"
  36 #include "irgmod.h"
  37 #include "irflag_t.h"
  38 #include "irgwalk.h"
  39 #include "tv.h"
  40 #include "array.h"
  41 #include "error.h"
  42 #include "adt/set.h"
  43
  44 #define SYMERROR ((unsigned) ~0)
  45
  46 typedef struct io_env
  47 {
  48         FILE *file;
  49         set *idset;               /**< id_entry set, which maps from file ids to new Firm elements */
  50         int ignoreblocks;
  51         int line, col;
  52         ir_type **fixedtypes;
  53 } io_env_t;
  54
  55 typedef enum typetag_t
  56 {
  57         tt_iro,
  58         tt_tpo,
  59         tt_align,
  60         tt_allocation,
  61         tt_peculiarity,
  62         tt_pin_state,
  63         tt_type_state,
  64         tt_variability,
  65         tt_visibility,
  66         tt_volatility
  67 } typetag_t;
  68
  69 typedef struct symbol_t
  70 {
  71         const char *str;      /**< The name of this symbol. */
  72         typetag_t   typetag;  /**< The type tag of this symbol. */
  73         unsigned    code;     /**< The value of this symbol. */
  74 } symbol_t;
  75
  76 typedef struct id_entry
  77 {
  78         long id;
  79         void *elem;
  80 } id_entry;
  81
  82 /** The symbol table, a set of symbol_t elements. */
  83 static set *symtbl;
  84
  85
  86 /**
  87  * Calculate a hash value for a string.
  88  */
  89 static unsigned string_hash(const char *str, int len)
  90 {
  91         return str[0] * 27893 ^ str[len-1] * 81 ^ str[len >> 1];
  92 }
  93
  94 /**
  95  * Compare two symbol table entries.
  96  */
  97 static int symbol_cmp(const void *elt, const void *key, size_t size)
  98 {
  99         const symbol_t *entry = (const symbol_t *) elt;
 100         const symbol_t *keyentry = (const symbol_t *) key;
 101         (void) size;
 102         return strcmp(entry->str, keyentry->str);
 103 }
 104
 105 static int id_cmp(const void *elt, const void *key, size_t size)
 106 {
 107         const id_entry *entry = (const id_entry *) elt;
 108         const id_entry *keyentry = (const id_entry *) key;
 109         (void) size;
 110         return entry->id - keyentry->id;
 111 }
 112
 113 /** Initializes the symbol table. May be called more than once without problems. */
 114 static void symtbl_init(void)
 115 {
 116         symbol_t key;
 117
 118         /* Only initialize once */
 119         if(symtbl != NULL)
 120                 return;
 121
 122         symtbl = new_set(symbol_cmp, 32);
 123
 124 #define INSERT(s, tt, cod)                                       \
 125         key.str = (s);                                               \
 126         key.typetag = (tt);                                          \
 127         key.code = (cod);                                            \
 128         set_insert(symtbl, &key, sizeof(key), string_hash(s, sizeof(s)-1))
 129
 130 #define INSERTENUM(tt, e) INSERT(#e, tt, e)
 131
 132         INSERT("primitive", tt_tpo, tpo_primitive);
 133         INSERT("method", tt_tpo, tpo_method);
 134         INSERT("array", tt_tpo, tpo_array);
 135         INSERT("struct", tt_tpo, tpo_struct);
 136         INSERT("Unknown", tt_tpo, tpo_unknown);
 137
 138 #include "gen_irio_lex.inl"
 139
 140         INSERTENUM(tt_align, align_non_aligned);
 141         INSERTENUM(tt_align, align_is_aligned);
 142
 143         INSERTENUM(tt_allocation, allocation_automatic);
 144         INSERTENUM(tt_allocation, allocation_parameter);
 145         INSERTENUM(tt_allocation, allocation_dynamic);
 146         INSERTENUM(tt_allocation, allocation_static);
 147
 148         INSERTENUM(tt_pin_state, op_pin_state_floats);
 149         INSERTENUM(tt_pin_state, op_pin_state_pinned);
 150         INSERTENUM(tt_pin_state, op_pin_state_exc_pinned);
 151         INSERTENUM(tt_pin_state, op_pin_state_mem_pinned);
 152
 153         INSERTENUM(tt_type_state, layout_undefined);
 154         INSERTENUM(tt_type_state, layout_fixed);
 155
 156         INSERTENUM(tt_variability, variability_uninitialized);
 157         INSERTENUM(tt_variability, variability_initialized);
 158         INSERTENUM(tt_variability, variability_part_constant);
 159         INSERTENUM(tt_variability, variability_constant);
 160
 161         INSERTENUM(tt_visibility, visibility_local);
 162         INSERTENUM(tt_visibility, visibility_external_visible);
 163         INSERTENUM(tt_visibility, visibility_external_allocated);
 164
 165         INSERTENUM(tt_volatility, volatility_non_volatile);
 166         INSERTENUM(tt_volatility, volatility_is_volatile);
 167
 168         INSERTENUM(tt_peculiarity, peculiarity_description);
 169         INSERTENUM(tt_peculiarity, peculiarity_inherited);
 170         INSERTENUM(tt_peculiarity, peculiarity_existent);
 171
 172 #undef INSERTENUM
 173 #undef INSERT
 174 }
 175
 176 /** Returns the according symbol value for the given string and tag, or SYMERROR if none was found. */
 177 static unsigned symbol(const char *str, typetag_t typetag)
 178 {
 179         symbol_t key, *entry;
 180
 181         key.str = str;
 182
 183         entry = set_find(symtbl, &key, sizeof(key), string_hash(str, strlen(str)));
 184         if (entry && entry->typetag == typetag) {
 185                 return entry->code;
 186         }
 187         return SYMERROR;
 188 }
 189
 190 static void *get_id(io_env_t *env, long id)
 191 {
 192         id_entry key, *entry;
 193         key.id = id;
 194
 195         entry = set_find(env->idset, &key, sizeof(key), (unsigned) id);
 196         return entry ? entry->elem : NULL;
 197 }
 198
 199 static void set_id(io_env_t *env, long id, void *elem)
 200 {
 201         id_entry key;
 202         key.id = id;
 203         key.elem = elem;
 204         set_insert(env->idset, &key, sizeof(key), (unsigned) id);
 205 }
 206
 207 static void write_mode(io_env_t *env, ir_mode *mode)
 208 {
 209         fputs(get_mode_name(mode), env->file);
 210         fputc(' ', env->file);
 211 }
 212
 213 static void write_pinned(io_env_t *env, ir_node *irn)
 214 {
 215         fputs(get_op_pin_state_name(get_irn_pinned(irn)), env->file);
 216         fputc(' ', env->file);
 217 }
 218
 219 static void write_volatility(io_env_t *env, ir_node *irn)
 220 {
 221         ir_volatility vol;
 222
 223         if(is_Load(irn)) vol = get_Load_volatility(irn);
 224         else if(is_Store(irn)) vol = get_Store_volatility(irn);
 225         else assert(0 && "Invalid optype for write_volatility");
 226
 227         fputs(get_volatility_name(vol), env->file);
 228         fputc(' ', env->file);
 229 }
 230
 231 static void write_align(io_env_t *env, ir_node *irn)
 232 {
 233         ir_align align;
 234
 235         if(is_Load(irn)) align = get_Load_align(irn);
 236         else if(is_Store(irn)) align = get_Store_align(irn);
 237         else assert(0 && "Invalid optype for write_align");
 238
 239         fputs(get_align_name(align), env->file);
 240         fputc(' ', env->file);
 241 }
 242
 243 static void export_type(io_env_t *env, ir_type *tp)
 244 {
 245         FILE *f = env->file;
 246         int i;
 247         fprintf(f, "\ttype %ld %s \"%s\" %u %u %s %s ",
 248                         get_type_nr(tp),
 249                         get_type_tpop_name(tp),
 250                         get_type_name(tp),
 251                         get_type_size_bytes(tp),
 252                         get_type_alignment_bytes(tp),
 253                         get_type_state_name(get_type_state(tp)),
 254                         get_visibility_name(get_type_visibility(tp)));
 255
 256         switch(get_type_tpop_code(tp))
 257         {
 258                 case tpo_array:
 259                 {
 260                         int n = get_array_n_dimensions(tp);
 261                         fprintf(f, "%i %ld ", n, get_type_nr(get_array_element_type(tp)));
 262                         for(i = 0; i < n; i++)
 263                         {
 264                                 ir_node *lower = get_array_lower_bound(tp, i);
 265                                 ir_node *upper = get_array_upper_bound(tp, i);
 266
 267                                 if(is_Const(lower)) fprintf(f, "%ld ", get_tarval_long(get_Const_tarval(lower)));
 268                                 else panic("Lower array bound is not constant");
 269
 270                                 if(is_Const(upper)) fprintf(f, "%ld ", get_tarval_long(get_Const_tarval(upper)));
 271                                 else panic("Upper array bound is not constant");
 272                         }
 273                         break;
 274                 }
 275
 276                 case tpo_method:
 277                 {
 278                         int nparams = get_method_n_params(tp);
 279                         int nresults = get_method_n_ress(tp);
 280                         fprintf(f, "%i %i ", nparams, nresults);
 281                         for(i = 0; i < nparams; i++)
 282                                 fprintf(f, "%ld ", get_type_nr(get_method_param_type(tp, i)));
 283                         for(i = 0; i < nresults; i++)
 284                                 fprintf(f, "%ld ", get_type_nr(get_method_res_type(tp, i)));
 285                         break;
 286                 }
 287
 288                 case tpo_primitive:
 289                 {
 290                         write_mode(env, get_type_mode(tp));
 291                         break;
 292                 }
 293
 294                 case tpo_struct:
 295                         break;
 296
 297                 case tpo_class:
 298                         /* TODO: inheritance stuff not supported yet */
 299                         printf("Inheritance of classes not supported yet!\n");
 300                         break;
 301
 302                 case tpo_unknown:
 303                         break;
 304
 305                 default:
 306                         printf("export_type: Unknown type code \"%s\".\n", get_type_tpop_name(tp));
 307                         break;
 308         }
 309         fputc('\n', f);
 310 }
 311
 312 static void export_entity(io_env_t *env, ir_entity *ent)
 313 {
 314         ir_type *owner = get_entity_owner(ent);
 315         fprintf(env->file, "\tentity %ld \"%s\" %ld %ld %d %u %s %s %s %s %s\n",
 316                         get_entity_nr(ent),
 317                         get_entity_name(ent),
 318                         get_type_nr(get_entity_type(ent)),
 319                         get_type_nr(owner),
 320                         get_entity_offset(ent),
 321                         (unsigned) get_entity_offset_bits_remainder(ent),
 322                         get_allocation_name(get_entity_allocation(ent)),
 323                         get_visibility_name(get_entity_visibility(ent)),
 324                         get_variability_name(get_entity_variability(ent)),
 325                         get_peculiarity_name(get_entity_peculiarity(ent)),
 326                         get_volatility_name(get_entity_volatility(ent)));
 327
 328         // TODO: inheritance stuff for class entities not supported yet
 329         if(is_Class_type(owner) && owner != get_glob_type())
 330                 printf("Inheritance of class entities not supported yet!\n");
 331 }
 332
 333 static void export_type_or_ent(type_or_ent tore, void *ctx)
 334 {
 335         io_env_t *env = (io_env_t *) ctx;
 336
 337         switch(get_kind(tore.ent))
 338         {
 339                 case k_entity:
 340                         export_entity(env, tore.ent);
 341                         break;
 342
 343                 case k_type:
 344                         export_type(env, tore.typ);
 345                         break;
 346
 347                 default:
 348                         printf("export_type_or_ent: Unknown type or entity.\n");
 349                         break;
 350         }
 351 }
 352
 353 static void export_node(ir_node *irn, void *ctx)
 354 {
 355         io_env_t *env = (io_env_t *) ctx;
 356         int i, n;
 357         unsigned opcode = get_irn_opcode(irn);
 358         char buf[1024];
 359
 360         if(env->ignoreblocks && opcode == iro_Block)
 361                 return;
 362
 363         n = get_irn_arity(irn);
 364
 365         fprintf(env->file, "\n\t%s %ld [ ", get_irn_opname(irn), get_irn_node_nr(irn));
 366
 367         for(i = -1; i < n; i++)
 368         {
 369                 ir_node *pred = get_irn_n(irn, i);
 370                 if(pred == NULL) {
 371                         /* Anchor node may ave NULL predecessors */
 372                         assert(is_Anchor(irn));
 373                         fputs("-1 ", env->file);
 374                 } else {
 375                         fprintf(env->file, "%ld ", get_irn_node_nr(pred));
 376                 }
 377         }
 378
 379         fprintf(env->file, "] { ");
 380
 381         switch(opcode)
 382         {
 383                 #include "gen_irio_export.inl"
 384         }
 385         fputc('}', env->file);
 386 }
 387
 388 /** Exports the given irg to the given file. */
 389 void ir_export_irg(ir_graph *irg, const char *filename)
 390 {
 391         io_env_t env;
 392
 393         env.file = fopen(filename, "wt");
 394         if(!env.file)
 395         {
 396                 perror(filename);
 397                 return;
 398         }
 399
 400         fputs("typegraph {\n", env.file);
 401
 402         type_walk_irg(irg, NULL, export_type_or_ent, &env);
 403
 404         fprintf(env.file, "}\n\nirg %ld {", get_entity_nr(get_irg_entity(irg)));
 405
 406         env.ignoreblocks = 0;
 407         irg_block_walk_graph(irg, NULL, export_node, &env);
 408
 409         env.ignoreblocks = 1;
 410         irg_walk_anchors(irg, NULL, export_node, &env);
 411
 412         fputs("\n}\n", env.file);
 413
 414         fclose(env.file);
 415 }
 416
 417 static int read_c(io_env_t *env)
 418 {
 419         int ch = fgetc(env->file);
 420         switch(ch)
 421         {
 422                 case '\t':
 423                         env->col += 4;
 424                         break;
 425
 426                 case '\n':
 427                         env->col = 0;
 428                         env->line++;
 429                         break;
 430
 431                 default:
 432                         env->col++;
 433                         break;
 434         }
 435         return ch;
 436 }
 437
 438 /** Returns the first non-whitespace character or EOF. **/
 439 static int skip_ws(io_env_t *env)
 440 {
 441         while(1)
 442         {
 443                 int ch = read_c(env);
 444                 switch(ch)
 445                 {
 446                         case ' ':
 447                         case '\t':
 448                         case '\n':
 449                         case '\r':
 450                                 break;
 451
 452                         default:
 453                                 return ch;
 454                 }
 455         }
 456 }
 457
 458 static void skip_to(io_env_t *env, char to_ch)
 459 {
 460         int ch;
 461         do
 462         {
 463                 ch = read_c(env);
 464         }
 465         while(ch != to_ch && ch != EOF);
 466 }
 467
 468 static int expect_char(io_env_t *env, char ch)
 469 {
 470         int curch = skip_ws(env);
 471         if(curch != ch)
 472         {
 473                 printf("Unexpected char '%c', expected '%c' in line %i:%i\n", curch, ch, env->line, env->col);
 474                 return 0;
 475         }
 476         return 1;
 477 }
 478
 479 #define EXPECT(c) if(expect_char(env, (c))) {} else return 0
 480 #define EXPECT_OR_EXIT(c) if(expect_char(env, (c))) {} else exit(1)
 481
 482 inline static const char *read_str_to(io_env_t *env, char *buf, size_t bufsize)
 483 {
 484         size_t i;
 485         for(i = 0; i < bufsize - 1; i++)
 486         {
 487                 int ch = read_c(env);
 488                 if(ch == EOF) break;
 489                 switch(ch)
 490                 {
 491                         case ' ':
 492                         case '\t':
 493                         case '\n':
 494                         case '\r':
 495                                 if(i != 0)
 496                                         goto endofword;
 497                                 i--;    // skip whitespace
 498                                 break;
 499
 500                         default:
 501                                 buf[i] = ch;
 502                                 break;
 503                 }
 504         }
 505 endofword:
 506         buf[i] = 0;
 507         return buf;
 508 }
 509
 510 static const char *read_str(io_env_t *env)
 511 {
 512         static char buf[1024];
 513         return read_str_to(env, buf, sizeof(buf));
 514 }
 515
 516 static const char *read_qstr_to(io_env_t *env, char *buf, size_t bufsize)
 517 {
 518         size_t i;
 519         EXPECT_OR_EXIT('\"');
 520         for(i = 0; i < bufsize - 1; i++)
 521         {
 522                 int ch = read_c(env);
 523                 if(ch == EOF)
 524                 {
 525                         printf("Unexpected end of quoted string!\n");
 526                         exit(1);
 527                 }
 528                 if(ch == '\"') break;
 529
 530                 buf[i] = ch;
 531         }
 532         if(i == bufsize - 1)
 533         {
 534                 printf("Quoted string too long!\n");
 535                 exit(1);
 536         }
 537         buf[i] = 0;
 538         return buf;
 539 }
 540
 541 static long read_long2(io_env_t *env, char **endptr)
 542 {
 543         static char buf[1024];
 544         return strtol(read_str_to(env, buf, sizeof(buf)), endptr, 0);
 545 }
 546
 547 static long read_long(io_env_t *env)
 548 {
 549         return read_long2(env, NULL);
 550 }
 551
 552 static ir_node *get_node_or_null(io_env_t *env, long nodenr)
 553 {
 554         ir_node *node = (ir_node *) get_id(env, nodenr);
 555         if(node && node->kind != k_ir_node)
 556         {
 557                 panic("Irn ID %ld collides with something else in line %i:%i\n", nodenr, env->line, env->col);
 558         }
 559         return node;
 560 }
 561
 562 static ir_node *get_node(io_env_t *env, long nodenr)
 563 {
 564         ir_node *node = get_node_or_null(env, nodenr);
 565         if(!node)
 566                 panic("Unknown node: %ld in line %i:%i\n", nodenr, env->line, env->col);
 567
 568         return node;
 569 }
 570
 571 static ir_node *get_node_or_dummy(io_env_t *env, long nodenr)
 572 {
 573         ir_node *node = get_node_or_null(env, nodenr);
 574         if(!node)
 575         {
 576                 node = new_Dummy(mode_X);
 577                 set_id(env, nodenr, node);
 578         }
 579         return node;
 580 }
 581
 582 static ir_type *get_type(io_env_t *env, long typenr)
 583 {
 584         ir_type *type = (ir_type *) get_id(env, typenr);
 585         if(!type)
 586         {
 587                 panic("Unknown type: %ld in line %i:%i\n", typenr, env->line, env->col);
 588         }
 589         else if(type->kind != k_type)
 590         {
 591                 panic("Type ID %ld collides with something else in line %i:%i\n", typenr, env->line, env->col);
 592         }
 593         return type;
 594 }
 595
 596 static ir_type *read_type(io_env_t *env)
 597 {
 598         return get_type(env, read_long(env));
 599 }
 600
 601 static ir_entity *get_entity(io_env_t *env, long entnr)
 602 {
 603         ir_entity *entity = (ir_entity *) get_id(env, entnr);
 604         if(!entity)
 605         {
 606                 printf("Unknown entity: %ld in line %i:%i\n", entnr, env->line, env->col);
 607                 exit(1);
 608         }
 609         else if(entity->kind != k_entity)
 610         {
 611                 panic("Entity ID %ld collides with something else in line %i:%i\n", entnr, env->line, env->col);
 612         }
 613         return entity;
 614 }
 615
 616 static ir_entity *read_entity(io_env_t *env)
 617 {
 618         return get_entity(env, read_long(env));
 619 }
 620
 621 static ir_mode *read_mode(io_env_t *env)
 622 {
 623         static char buf[128];
 624         int i, n;
 625
 626         read_str_to(env, buf, sizeof(buf));
 627
 628         n = get_irp_n_modes();
 629         for(i = 0; i < n; i++)
 630         {
 631                 ir_mode *mode = get_irp_mode(i);
 632                 if(!strcmp(buf, get_mode_name(mode)))
 633                         return mode;
 634         }
 635
 636         printf("Unknown mode \"%s\" in line %i:%i\n", buf, env->line, env->col);
 637         return mode_ANY;
 638 }
 639
 640 static const char *get_typetag_name(typetag_t typetag)
 641 {
 642         switch(typetag)
 643         {
 644                 case tt_iro:         return "opcode";
 645                 case tt_tpo:         return "type";
 646                 case tt_align:       return "align";
 647                 case tt_allocation:  return "allocation";
 648                 case tt_peculiarity: return "peculiarity";
 649                 case tt_pin_state:   return "pin state";
 650                 case tt_type_state:  return "type state";
 651                 case tt_variability: return "variability";
 652                 case tt_visibility:  return "visibility";
 653                 case tt_volatility:  return "volatility";
 654                 default: return "<UNKNOWN>";
 655         }
 656 }
 657
 658 /**
 659  * Read and decode an enum constant.
 660  */
 661 static unsigned read_enum(io_env_t *env, typetag_t typetag)
 662 {
 663         static char buf[128];
 664         unsigned code = symbol(read_str_to(env, buf, sizeof(buf)), typetag);
 665         if(code != SYMERROR)
 666                 return code;
 667
 668         printf("Invalid %s: \"%s\" in %i:%i\n", get_typetag_name(typetag), buf, env->line, env->col);
 669         return 0;
 670 }
 671
 672 #define read_align(env)       ((ir_align)       read_enum(env, tt_align))
 673 #define read_allocation(env)  ((ir_allocation)  read_enum(env, tt_allocation))
 674 #define read_peculiarity(env) ((ir_peculiarity) read_enum(env, tt_peculiarity))
 675 #define read_pinned(env)      ((op_pin_state)   read_enum(env, tt_pin_state))
 676 #define read_type_state(env)  ((ir_type_state)  read_enum(env, tt_type_state))
 677 #define read_variability(env) ((ir_variability) read_enum(env, tt_variability))
 678 #define read_visibility(env)  ((ir_visibility)  read_enum(env, tt_visibility))
 679 #define read_volatility(env)  ((ir_volatility)  read_enum(env, tt_volatility))
 680
 681 static tarval *read_tv(io_env_t *env)
 682 {
 683         static char buf[128];
 684         ir_mode *tvmode = read_mode(env);
 685         read_str_to(env, buf, sizeof(buf));
 686         return new_tarval_from_str(buf, strlen(buf), tvmode);
 687 }
 688
 689 /** Reads a type description and remembers it by its id. */
 690 static void import_type(io_env_t *env)
 691 {
 692         char           buf[1024];
 693         int            i;
 694         ir_type       *type;
 695         long           typenr = read_long(env);
 696         const char    *tpop   = read_str(env);
 697         const char    *name   = read_qstr_to(env, buf, sizeof(buf));
 698         unsigned       size   = (unsigned) read_long(env);
 699         unsigned       align  = (unsigned) read_long(env);
 700         ir_type_state  state  = read_type_state(env);
 701         ir_visibility  vis    = read_visibility(env);
 702
 703         ident         *id     = new_id_from_str(name);
 704
 705         switch(symbol(tpop, tt_tpo))
 706         {
 707                 case tpo_primitive:
 708                 {
 709                         ir_mode *mode = read_mode(env);
 710                         type = new_type_primitive(id, mode);
 711                         break;
 712                 }
 713
 714                 case tpo_method:
 715                 {
 716                         int nparams  = (int) read_long(env);
 717                         int nresults = (int) read_long(env);
 718
 719                         type = new_type_method(id, nparams, nresults);
 720
 721                         for(i = 0; i < nparams; i++)
 722                         {
 723                                 long     typenr = read_long(env);
 724                                 ir_type *paramtype = get_type(env, typenr);
 725
 726                                 set_method_param_type(type, i, paramtype);
 727                         }
 728                         for(i = 0; i < nresults; i++)
 729                         {
 730                                 long typenr = read_long(env);
 731                                 ir_type *restype = get_type(env, typenr);
 732
 733                                 set_method_res_type(type, i, restype);
 734                         }
 735                         break;
 736                 }
 737
 738                 case tpo_array:
 739                 {
 740                         int ndims = (int) read_long(env);
 741                         long elemtypenr = read_long(env);
 742                         ir_type *elemtype = get_type(env, elemtypenr);
 743
 744                         type = new_type_array(id, ndims, elemtype);
 745                         for(i = 0; i < ndims; i++)
 746                         {
 747                                 long lowerbound = read_long(env);
 748                                 long upperbound = read_long(env);
 749                                 set_array_bounds_int(type, i, lowerbound, upperbound);
 750                         }
 751                         set_type_size_bytes(type, size);
 752                         break;
 753                 }
 754
 755                 case tpo_class:
 756                         type = new_type_class(id);
 757                         set_type_size_bytes(type, size);
 758                         break;
 759
 760                 case tpo_struct:
 761                         type = new_type_struct(id);
 762                         set_type_size_bytes(type, size);
 763                         break;
 764
 765                 case tpo_union:
 766                         type = new_type_union(id);
 767                         set_type_size_bytes(type, size);
 768                         break;
 769
 770                 case tpo_unknown:
 771                         return;   // ignore unknown type
 772
 773                 default:
 774                         if(typenr != 0)  // ignore global type
 775                                 printf("Unknown type kind: \"%s\" in line %i:%i\n", tpop, env->line, env->col);
 776                         skip_to(env, '\n');
 777                         return;
 778         }
 779
 780         set_type_alignment_bytes(type, align);
 781         set_type_visibility(type, vis);
 782
 783         if(state == layout_fixed)
 784                 ARR_APP1(ir_type *, env->fixedtypes, type);
 785
 786         set_id(env, typenr, type);
 787         printf("Insert type %s %ld\n", name, typenr);
 788 }
 789
 790 /** Reads an entity description and remembers it by its id. */
 791 static void import_entity(io_env_t *env)
 792 {
 793         char          buf[1024];
 794         long          entnr       = read_long(env);
 795         const char   *name        = read_qstr_to(env, buf, sizeof(buf));
 796         long          typenr      = read_long(env);
 797         long          ownertypenr = read_long(env);
 798
 799         ir_type   *type      = get_type(env, typenr);
 800         ir_type   *ownertype = !ownertypenr ? get_glob_type() : get_type(env, ownertypenr);
 801         ir_entity *entity    = new_entity(ownertype, new_id_from_str(name), type);
 802
 803         set_entity_offset     (entity, (int) read_long(env));
 804         set_entity_offset_bits_remainder(entity, (unsigned char) read_long(env));
 805         set_entity_allocation (entity, read_allocation(env));
 806         set_entity_visibility (entity, read_visibility(env));
 807         set_entity_variability(entity, read_variability(env));
 808         set_entity_peculiarity(entity, read_peculiarity(env));
 809         set_entity_volatility (entity, read_volatility(env));
 810
 811         set_id(env, entnr, entity);
 812         printf("Insert entity %s %ld\n", name, entnr);
 813 }
 814
 815 /** Parses the whole type graph. */
 816 static int parse_typegraph(io_env_t *env)
 817 {
 818         const char *kind;
 819         long curfpos;
 820
 821         EXPECT('{');
 822
 823         curfpos = ftell(env->file);
 824
 825         // parse all types first
 826         while(1)
 827         {
 828                 kind = read_str(env);
 829                 if(kind[0] == '}' && !kind[1]) break;
 830
 831                 if(!strcmp(kind, "type"))
 832                         import_type(env);
 833                 else
 834                         skip_to(env, '\n');
 835         }
 836
 837         // now parse rest
 838         fseek(env->file, curfpos, SEEK_SET);
 839         while(1)
 840         {
 841                 kind = read_str(env);
 842                 if(kind[0] == '}' && !kind[1]) break;
 843
 844                 if(!strcmp(kind, "type"))
 845                         skip_to(env, '\n');
 846                 else if(!strcmp(kind, "entity"))
 847                         import_entity(env);
 848                 else
 849                 {
 850                         printf("Type graph element not supported yet: \"%s\"\n", kind);
 851                         skip_to(env, '\n');
 852                 }
 853         }
 854         return 1;
 855 }
 856
 857 static int read_node_header(io_env_t *env, long *nodenr, long **preds, const char **nodename)
 858 {
 859         int numpreds;
 860         *nodename = read_str(env);
 861         if((*nodename)[0] == '}' && !(*nodename)[1]) return -1;  // end-of-graph
 862
 863         *nodenr = read_long(env);
 864
 865         ARR_RESIZE(ir_node *, *preds, 0);
 866
 867         EXPECT('[');
 868         for(numpreds = 0; !feof(env->file); numpreds++)
 869         {
 870                 char *endptr;
 871                 ARR_APP1(long, *preds, read_long2(env, &endptr));
 872                 if(*endptr == ']') break;
 873         }
 874         return numpreds;
 875 }
 876
 877 /** Parses an IRG. */
 878 static int parse_graph(io_env_t *env)
 879 {
 880         long       *preds = NEW_ARR_F(long, 16);
 881         ir_node   **prednodes = NEW_ARR_F(ir_node *, 16);
 882         int         i, numpreds, ret = 1;
 883         long        nodenr;
 884         const char *nodename;
 885         ir_node    *node, *newnode;
 886
 887         current_ir_graph = new_ir_graph(get_entity(env, read_long(env)), 0);
 888
 889         EXPECT('{');
 890
 891         while(1)
 892         {
 893                 numpreds = read_node_header(env, &nodenr, &preds, &nodename);
 894                 if(numpreds == -1) break;  // end-of-graph
 895                 if(!numpreds)
 896                 {
 897                         printf("Node %s %ld is missing predecessors!", nodename, nodenr);
 898                         ret = 0;
 899                         break;
 900                 }
 901
 902                 ARR_RESIZE(ir_node *, prednodes, numpreds);
 903                 for(i = 0; i < numpreds - 1; i++)
 904                         prednodes[i] = get_node_or_dummy(env, preds[i + 1]);
 905
 906                 node = get_node_or_null(env, nodenr);
 907                 newnode = NULL;
 908
 909                 EXPECT('{');
 910
 911                 switch(symbol(nodename, tt_iro))
 912                 {
 913                         case iro_End:
 914                         {
 915                                 ir_node *newendblock = get_node(env, preds[0]);
 916                                 newnode = get_irg_end(current_ir_graph);
 917                                 exchange(get_nodes_block(newnode), newendblock);
 918                                 break;
 919                         }
 920
 921                         case iro_Start:
 922                         {
 923                                 ir_node *newstartblock = get_node(env, preds[0]);
 924                                 newnode = get_irg_start(current_ir_graph);
 925                                 exchange(get_nodes_block(newnode), newstartblock);
 926                                 break;
 927                         }
 928
 929                         case iro_Block:
 930                         {
 931                                 if(preds[0] != nodenr)
 932                                 {
 933                                         printf("Invalid block: preds[0] != nodenr (%ld != %ld)\n",
 934                                                 preds[0], nodenr);
 935                                         ret = 0;
 936                                         goto endloop;
 937                                 }
 938
 939                                 newnode = new_Block(numpreds - 1, prednodes);
 940                                 break;
 941                         }
 942
 943                         case iro_Anchor:
 944                                 newnode = current_ir_graph->anchor;
 945                                 for(i = 0; i < numpreds - 1; i++)
 946                                         set_irn_n(newnode, i, prednodes[i]);
 947                                 set_irn_n(newnode, -1, get_node(env, preds[0]));
 948                                 break;
 949
 950                         case iro_SymConst:
 951                         {
 952                                 long entnr = read_long(env);
 953                                 union symconst_symbol sym;
 954                                 sym.entity_p = get_entity(env, entnr);
 955                                 newnode = new_SymConst(mode_P, sym, symconst_addr_ent);
 956                                 break;
 957                         }
 958
 959                         #include "gen_irio_import.inl"
 960
 961                         default:
 962                                 goto notsupported;
 963                 }
 964
 965                 EXPECT('}');
 966
 967                 if(!newnode)
 968                 {
 969 notsupported:
 970                         panic("Node type not supported yet: %s in line %i:%i\n", nodename, env->line, env->col);
 971                 }
 972
 973                 if(node)
 974                         exchange(node, newnode);
 975                 /* Always update hash entry to avoid more uses of id nodes */
 976                 set_id(env, nodenr, newnode);
 977                 printf("Insert %s %ld\n", nodename, nodenr);
 978         }
 979
 980 endloop:
 981         DEL_ARR_F(preds);
 982         DEL_ARR_F(prednodes);
 983
 984         return ret;
 985 }
 986
 987 /** Imports an previously exported textual representation of an (maybe partial) irp */
 988 void ir_import(const char *filename)
 989 {
 990         int oldoptimize = get_optimize();
 991         firm_verification_t oldver = get_node_verification_mode();
 992         io_env_t ioenv;
 993         io_env_t *env = &ioenv;
 994         int i, n;
 995
 996         symtbl_init();
 997
 998         memset(env, 0, sizeof(*env));
 999         env->idset = new_set(id_cmp, 128);
1000         env->fixedtypes = NEW_ARR_F(ir_type *, 0);
1001
1002         env->file = fopen(filename, "rt");
1003         if(!env->file)
1004         {
1005                 perror(filename);
1006                 exit(1);
1007         }
1008
1009         set_optimize(0);
1010         do_node_verification(FIRM_VERIFICATION_OFF);
1011
1012         while(1)
1013         {
1014                 const char *str = read_str(env);
1015                 if(!*str) break;
1016                 if(!strcmp(str, "typegraph"))
1017                 {
1018                         if(!parse_typegraph(env)) break;
1019                 }
1020                 else if(!strcmp(str, "irg"))
1021                 {
1022                         if(!parse_graph(env)) break;
1023                 }
1024         }
1025
1026         n = ARR_LEN(env->fixedtypes);
1027         for(i = 0; i < n; i++)
1028                 set_type_state(env->fixedtypes[i], layout_fixed);
1029
1030         DEL_ARR_F(env->fixedtypes);
1031
1032         del_set(env->idset);
1033
1034         irp_finalize_cons();
1035
1036         do_node_verification(oldver);
1037         set_optimize(oldoptimize);
1038
1039         fclose(env->file);
1040 }