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         tt_initializer
  68 } typetag_t;
  69
  70 typedef struct symbol_t
  71 {
  72         const char *str;      /**< The name of this symbol. */
  73         typetag_t   typetag;  /**< The type tag of this symbol. */
  74         unsigned    code;     /**< The value of this symbol. */
  75 } symbol_t;
  76
  77 typedef struct id_entry
  78 {
  79         long id;
  80         void *elem;
  81 } id_entry;
  82
  83 /** The symbol table, a set of symbol_t elements. */
  84 static set *symtbl;
  85
  86
  87 /**
  88  * Calculate a hash value for a string.
  89  */
  90 static unsigned string_hash(const char *str, int len)
  91 {
  92         return str[0] * 27893 ^ str[len-1] * 81 ^ str[len >> 1];
  93 }
  94
  95 /**
  96  * Compare two symbol table entries.
  97  */
  98 static int symbol_cmp(const void *elt, const void *key, size_t size)
  99 {
 100         const symbol_t *entry = (const symbol_t *) elt;
 101         const symbol_t *keyentry = (const symbol_t *) key;
 102         (void) size;
 103         return strcmp(entry->str, keyentry->str);
 104 }
 105
 106 static int id_cmp(const void *elt, const void *key, size_t size)
 107 {
 108         const id_entry *entry = (const id_entry *) elt;
 109         const id_entry *keyentry = (const id_entry *) key;
 110         (void) size;
 111         return entry->id - keyentry->id;
 112 }
 113
 114 /** Initializes the symbol table. May be called more than once without problems. */
 115 static void symtbl_init(void)
 116 {
 117         symbol_t key;
 118
 119         /* Only initialize once */
 120         if(symtbl != NULL)
 121                 return;
 122
 123         symtbl = new_set(symbol_cmp, 32);
 124
 125 #define INSERT(s, tt, cod)                                       \
 126         key.str = (s);                                               \
 127         key.typetag = (tt);                                          \
 128         key.code = (cod);                                            \
 129         set_insert(symtbl, &key, sizeof(key), string_hash(s, sizeof(s)-1))
 130
 131 #define INSERTENUM(tt, e) INSERT(#e, tt, e)
 132
 133         INSERT("array", tt_tpo, tpo_array);
 134         INSERT("class", tt_tpo, tpo_class);
 135         INSERT("method", tt_tpo, tpo_method);
 136         INSERT("pointer", tt_tpo, tpo_pointer);
 137         INSERT("primitive", tt_tpo, tpo_primitive);
 138         INSERT("struct", tt_tpo, tpo_struct);
 139         INSERT("Unknown", tt_tpo, tpo_unknown);
 140
 141 #include "gen_irio_lex.inl"
 142
 143         INSERTENUM(tt_align, align_non_aligned);
 144         INSERTENUM(tt_align, align_is_aligned);
 145
 146         INSERTENUM(tt_allocation, allocation_automatic);
 147         INSERTENUM(tt_allocation, allocation_parameter);
 148         INSERTENUM(tt_allocation, allocation_dynamic);
 149         INSERTENUM(tt_allocation, allocation_static);
 150
 151         INSERTENUM(tt_pin_state, op_pin_state_floats);
 152         INSERTENUM(tt_pin_state, op_pin_state_pinned);
 153         INSERTENUM(tt_pin_state, op_pin_state_exc_pinned);
 154         INSERTENUM(tt_pin_state, op_pin_state_mem_pinned);
 155
 156         INSERTENUM(tt_type_state, layout_undefined);
 157         INSERTENUM(tt_type_state, layout_fixed);
 158
 159         INSERTENUM(tt_variability, variability_uninitialized);
 160         INSERTENUM(tt_variability, variability_initialized);
 161         INSERTENUM(tt_variability, variability_part_constant);
 162         INSERTENUM(tt_variability, variability_constant);
 163
 164         INSERTENUM(tt_visibility, visibility_local);
 165         INSERTENUM(tt_visibility, visibility_external_visible);
 166         INSERTENUM(tt_visibility, visibility_external_allocated);
 167
 168         INSERTENUM(tt_volatility, volatility_non_volatile);
 169         INSERTENUM(tt_volatility, volatility_is_volatile);
 170
 171         INSERTENUM(tt_peculiarity, peculiarity_description);
 172         INSERTENUM(tt_peculiarity, peculiarity_inherited);
 173         INSERTENUM(tt_peculiarity, peculiarity_existent);
 174
 175         INSERTENUM(tt_initializer, IR_INITIALIZER_CONST);
 176         INSERTENUM(tt_initializer, IR_INITIALIZER_TARVAL);
 177         INSERTENUM(tt_initializer, IR_INITIALIZER_NULL);
 178         INSERTENUM(tt_initializer, IR_INITIALIZER_COMPOUND);
 179
 180 #undef INSERTENUM
 181 #undef INSERT
 182 }
 183
 184 /** Returns the according symbol value for the given string and tag, or SYMERROR if none was found. */
 185 static unsigned symbol(const char *str, typetag_t typetag)
 186 {
 187         symbol_t key, *entry;
 188
 189         key.str = str;
 190
 191         entry = set_find(symtbl, &key, sizeof(key), string_hash(str, strlen(str)));
 192         if (entry && entry->typetag == typetag) {
 193                 return entry->code;
 194         }
 195         return SYMERROR;
 196 }
 197
 198 static void *get_id(io_env_t *env, long id)
 199 {
 200         id_entry key, *entry;
 201         key.id = id;
 202
 203         entry = set_find(env->idset, &key, sizeof(key), (unsigned) id);
 204         return entry ? entry->elem : NULL;
 205 }
 206
 207 static void set_id(io_env_t *env, long id, void *elem)
 208 {
 209         id_entry key;
 210         key.id = id;
 211         key.elem = elem;
 212         set_insert(env->idset, &key, sizeof(key), (unsigned) id);
 213 }
 214
 215 static void write_mode(io_env_t *env, ir_mode *mode)
 216 {
 217         fputs(get_mode_name(mode), env->file);
 218         fputc(' ', env->file);
 219 }
 220
 221 static void write_tarval(io_env_t *env, tarval *tv)
 222 {
 223         char buf[1024];
 224         write_mode(env, get_tarval_mode(tv));
 225         tarval_snprintf(buf, sizeof(buf), tv);
 226         fputs(buf, env->file);
 227         fputc(' ', env->file);
 228 }
 229
 230 static void write_pin_state(io_env_t *env, ir_node *irn)
 231 {
 232         fputs(get_op_pin_state_name(get_irn_pinned(irn)), env->file);
 233         fputc(' ', env->file);
 234 }
 235
 236 static void write_volatility(io_env_t *env, ir_node *irn)
 237 {
 238         ir_volatility vol;
 239
 240         if(is_Load(irn)) vol = get_Load_volatility(irn);
 241         else if(is_Store(irn)) vol = get_Store_volatility(irn);
 242         else assert(0 && "Invalid optype for write_volatility");
 243
 244         fputs(get_volatility_name(vol), env->file);
 245         fputc(' ', env->file);
 246 }
 247
 248 static void write_align(io_env_t *env, ir_node *irn)
 249 {
 250         ir_align align;
 251
 252         if(is_Load(irn)) align = get_Load_align(irn);
 253         else if(is_Store(irn)) align = get_Store_align(irn);
 254         else assert(0 && "Invalid optype for write_align");
 255
 256         fputs(get_align_name(align), env->file);
 257         fputc(' ', env->file);
 258 }
 259
 260 static void write_initializer(io_env_t *env, ir_initializer_t *ini)
 261 {
 262         FILE *f = env->file;
 263         ir_initializer_kind_t ini_kind = get_initializer_kind(ini);
 264         fputs(get_initializer_kind_name(ini_kind), f);
 265         fputc(' ', f);
 266
 267         switch(ini_kind)
 268         {
 269                 case IR_INITIALIZER_CONST:
 270                         fprintf(f, "%ld ", get_irn_node_nr(get_initializer_const_value(ini)));
 271                         break;
 272
 273                 case IR_INITIALIZER_TARVAL:
 274                         write_tarval(env, get_initializer_tarval_value(ini));
 275                         break;
 276
 277                 case IR_INITIALIZER_NULL:
 278                         break;
 279
 280                 case IR_INITIALIZER_COMPOUND:
 281                 {
 282                         unsigned i, n = get_initializer_compound_n_entries(ini);
 283                         fprintf(f, "%d ", n);
 284                         for(i = 0; i < n; i++)
 285                                 write_initializer(env, get_initializer_compound_value(ini, i));
 286                         break;
 287                 }
 288
 289                 default:
 290                         panic("Unknown initializer kind");
 291         }
 292 }
 293
 294 static void export_type(io_env_t *env, ir_type *tp)
 295 {
 296         FILE *f = env->file;
 297         int i;
 298         fprintf(f, "\ttype %ld %s \"%s\" %u %u %s %s ",
 299                         get_type_nr(tp),
 300                         get_type_tpop_name(tp),
 301                         get_type_name(tp),
 302                         get_type_size_bytes(tp),
 303                         get_type_alignment_bytes(tp),
 304                         get_type_state_name(get_type_state(tp)),
 305                         get_visibility_name(get_type_visibility(tp)));
 306
 307         switch(get_type_tpop_code(tp))
 308         {
 309                 case tpo_array:
 310                 {
 311                         int n = get_array_n_dimensions(tp);
 312                         fprintf(f, "%i %ld ", n, get_type_nr(get_array_element_type(tp)));
 313                         for(i = 0; i < n; i++)
 314                         {
 315                                 ir_node *lower = get_array_lower_bound(tp, i);
 316                                 ir_node *upper = get_array_upper_bound(tp, i);
 317
 318                                 if(is_Const(lower)) fprintf(f, "%ld ", get_tarval_long(get_Const_tarval(lower)));
 319                                 else panic("Lower array bound is not constant");
 320
 321                                 if(is_Const(upper)) fprintf(f, "%ld ", get_tarval_long(get_Const_tarval(upper)));
 322                                 else if(is_Unknown(upper)) fputs("unknown ", f);
 323                                 else panic("Upper array bound is not constant");
 324                         }
 325                         break;
 326                 }
 327
 328                 case tpo_class:
 329                         /* TODO: inheritance stuff not supported yet */
 330                         printf("Inheritance of classes not supported yet!\n");
 331                         break;
 332
 333                 case tpo_method:
 334                 {
 335                         int nparams = get_method_n_params(tp);
 336                         int nresults = get_method_n_ress(tp);
 337                         fprintf(f, "%i %i ", nparams, nresults);
 338                         for(i = 0; i < nparams; i++)
 339                                 fprintf(f, "%ld ", get_type_nr(get_method_param_type(tp, i)));
 340                         for(i = 0; i < nresults; i++)
 341                                 fprintf(f, "%ld ", get_type_nr(get_method_res_type(tp, i)));
 342                         break;
 343                 }
 344
 345                 case tpo_pointer:
 346                         write_mode(env, get_type_mode(tp));
 347                         fprintf(f, "%ld ", get_type_nr(get_pointer_points_to_type(tp)));
 348                         break;
 349
 350                 case tpo_primitive:
 351                         write_mode(env, get_type_mode(tp));
 352                         break;
 353
 354                 case tpo_struct:
 355                         break;
 356
 357                 case tpo_unknown:
 358                         break;
 359
 360                 default:
 361                         printf("export_type: Unknown type code \"%s\".\n", get_type_tpop_name(tp));
 362                         break;
 363         }
 364         fputc('\n', f);
 365 }
 366
 367 static void export_entity(io_env_t *env, ir_entity *ent)
 368 {
 369         ir_type *owner = get_entity_owner(ent);
 370         fprintf(env->file, "\tentity %ld \"%s\" \"%s\" %ld %ld %d %u %s %s %s %s %s ",
 371                         get_entity_nr(ent),
 372                         get_entity_name(ent),
 373                         ent->ld_name ? get_id_str(ent->ld_name) : "",
 374                         get_type_nr(get_entity_type(ent)),
 375                         get_type_nr(owner),
 376                         get_entity_offset(ent),
 377                         (unsigned) get_entity_offset_bits_remainder(ent),
 378                         get_allocation_name(get_entity_allocation(ent)),
 379                         get_visibility_name(get_entity_visibility(ent)),
 380                         get_variability_name(get_entity_variability(ent)),
 381                         get_peculiarity_name(get_entity_peculiarity(ent)),
 382                         get_volatility_name(get_entity_volatility(ent)));
 383
 384         // TODO: inheritance stuff for class entities not supported yet
 385         if(is_Class_type(owner) && owner != get_glob_type())
 386                 printf("Inheritance of class entities not supported yet!\n");
 387
 388         if(get_entity_variability(ent) != variability_uninitialized
 389                 && get_entity_visibility(ent) != visibility_external_allocated)
 390         {
 391                 if(is_compound_entity(ent))
 392                 {
 393                         if(has_entity_initializer(ent))
 394                         {
 395                                 fputs("initializer ", env->file);
 396                                 write_initializer(env, get_entity_initializer(ent));
 397                         }
 398                         else
 399                         {
 400                                 fputs("noninitializer ", env->file);
 401                                 int i, n = get_compound_ent_n_values(ent);
 402                                 fprintf(env->file, "%d ", n);
 403                                 for(i = 0; i < n; i++)
 404                                 {
 405                                         ir_entity *member = get_compound_ent_value_member(ent, i);
 406                                         ir_node   *irn    = get_compound_ent_value(ent, i);
 407                                         fprintf(env->file, "%ld %ld ", get_entity_nr(member), get_irn_node_nr(irn));
 408                                 }
 409                         }
 410                 }
 411                 else
 412                 {
 413                         ir_node *irn = get_atomic_ent_value(ent);
 414                         fprintf(env->file, "%ld ", get_irn_node_nr(irn));
 415                 }
 416         }
 417
 418         fputc('\n', env->file);
 419 }
 420
 421 static void export_type_or_ent(type_or_ent tore, void *ctx)
 422 {
 423         io_env_t *env = (io_env_t *) ctx;
 424
 425         switch(get_kind(tore.ent))
 426         {
 427                 case k_entity:
 428                         export_entity(env, tore.ent);
 429                         break;
 430
 431                 case k_type:
 432                         export_type(env, tore.typ);
 433                         break;
 434
 435                 default:
 436                         printf("export_type_or_ent: Unknown type or entity.\n");
 437                         break;
 438         }
 439 }
 440
 441 static void export_node(ir_node *irn, void *ctx)
 442 {
 443         io_env_t *env = (io_env_t *) ctx;
 444         int i, n;
 445         unsigned opcode = get_irn_opcode(irn);
 446         char buf[1024];
 447
 448         if(env->ignoreblocks && opcode == iro_Block)
 449                 return;
 450
 451         n = get_irn_arity(irn);
 452
 453         fprintf(env->file, "\t%s %ld [ ", get_irn_opname(irn), get_irn_node_nr(irn));
 454
 455         for(i = -1; i < n; i++)
 456         {
 457                 ir_node *pred = get_irn_n(irn, i);
 458                 if(pred == NULL) {
 459                         /* Anchor node may have NULL predecessors */
 460                         assert(is_Anchor(irn));
 461                         fputs("-1 ", env->file);
 462                 } else {
 463                         fprintf(env->file, "%ld ", get_irn_node_nr(pred));
 464                 }
 465         }
 466
 467         fprintf(env->file, "] { ");
 468
 469         switch(opcode)
 470         {
 471                 #include "gen_irio_export.inl"
 472         }
 473         fputs("}\n", env->file);
 474 }
 475
 476 /** Exports the whole irp to the given file in a textual form. */
 477 void ir_export(const char *filename)
 478 {
 479         io_env_t env;
 480         int i, n_irgs = get_irp_n_irgs(), n_pseudoirgs = get_irp_n_pseudo_irgs();
 481
 482         env.file = fopen(filename, "wt");
 483         if(!env.file)
 484         {
 485                 perror(filename);
 486                 return;
 487         }
 488
 489         fputs("typegraph {\n", env.file);
 490
 491         type_walk(NULL, export_type_or_ent, &env);
 492         /* TODO: Visit frame types and "types for value params"? */
 493
 494         for(i = 0; i < n_irgs; i++)
 495         {
 496                 ir_graph *irg = get_irp_irg(i);
 497
 498                 fprintf(env.file, "}\n\nirg %ld {\n", get_entity_nr(get_irg_entity(irg)));
 499
 500                 env.ignoreblocks = 0;
 501                 irg_block_walk_graph(irg, NULL, export_node, &env);
 502
 503                 env.ignoreblocks = 1;
 504                 irg_walk_anchors(irg, NULL, export_node, &env);
 505         }
 506
 507         fputs("}\n\nconstirg {\n", env.file);
 508         walk_const_code(NULL, export_node, &env);
 509         fputs("}\n", env.file);
 510
 511         fclose(env.file);
 512 }
 513
 514 /** Exports the given irg to the given file. */
 515 void ir_export_irg(ir_graph *irg, const char *filename)
 516 {
 517         io_env_t env;
 518
 519         env.file = fopen(filename, "wt");
 520         if(!env.file)
 521         {
 522                 perror(filename);
 523                 return;
 524         }
 525
 526         fputs("typegraph {\n", env.file);
 527
 528         type_walk_irg(irg, NULL, export_type_or_ent, &env);
 529
 530         fprintf(env.file, "}\n\nirg %ld {\n", get_entity_nr(get_irg_entity(irg)));
 531
 532         env.ignoreblocks = 0;
 533         irg_block_walk_graph(irg, NULL, export_node, &env);
 534
 535         env.ignoreblocks = 1;
 536         irg_walk_anchors(irg, NULL, export_node, &env);
 537
 538         /* TODO: Only output needed constants */
 539         fputs("}\n\nconstirg {\n", env.file);
 540         walk_const_code(NULL, export_node, &env);
 541         fputs("}\n", env.file);
 542
 543         fclose(env.file);
 544 }
 545
 546 static int read_c(io_env_t *env)
 547 {
 548         int ch = fgetc(env->file);
 549         switch(ch)
 550         {
 551                 case '\t':
 552                         env->col += 4;
 553                         break;
 554
 555                 case '\n':
 556                         env->col = 0;
 557                         env->line++;
 558                         break;
 559
 560                 default:
 561                         env->col++;
 562                         break;
 563         }
 564         return ch;
 565 }
 566
 567 /** Returns the first non-whitespace character or EOF. **/
 568 static int skip_ws(io_env_t *env)
 569 {
 570         while(1)
 571         {
 572                 int ch = read_c(env);
 573                 switch(ch)
 574                 {
 575                         case ' ':
 576                         case '\t':
 577                         case '\n':
 578                         case '\r':
 579                                 break;
 580
 581                         default:
 582                                 return ch;
 583                 }
 584         }
 585 }
 586
 587 static void skip_to(io_env_t *env, char to_ch)
 588 {
 589         int ch;
 590         do
 591         {
 592                 ch = read_c(env);
 593         }
 594         while(ch != to_ch && ch != EOF);
 595 }
 596
 597 static int expect_char(io_env_t *env, char ch)
 598 {
 599         int curch = skip_ws(env);
 600         if(curch != ch)
 601         {
 602                 printf("Unexpected char '%c', expected '%c' in line %i:%i\n", curch, ch, env->line, env->col);
 603                 return 0;
 604         }
 605         return 1;
 606 }
 607
 608 #define EXPECT(c) if(expect_char(env, (c))) {} else return 0
 609 #define EXPECT_OR_EXIT(c) if(expect_char(env, (c))) {} else exit(1)
 610
 611 inline static const char *read_str_to(io_env_t *env, char *buf, size_t bufsize)
 612 {
 613         size_t i;
 614         for(i = 0; i < bufsize - 1; i++)
 615         {
 616                 int ch = read_c(env);
 617                 if(ch == EOF) break;
 618                 switch(ch)
 619                 {
 620                         case ' ':
 621                         case '\t':
 622                         case '\n':
 623                         case '\r':
 624                                 if(i != 0)
 625                                         goto endofword;
 626                                 i--;    // skip whitespace
 627                                 break;
 628
 629                         default:
 630                                 buf[i] = ch;
 631                                 break;
 632                 }
 633         }
 634 endofword:
 635         buf[i] = 0;
 636         return buf;
 637 }
 638
 639 static const char *read_str(io_env_t *env)
 640 {
 641         static char buf[1024];
 642         return read_str_to(env, buf, sizeof(buf));
 643 }
 644
 645 static const char *read_qstr_to(io_env_t *env, char *buf, size_t bufsize)
 646 {
 647         size_t i;
 648         EXPECT_OR_EXIT('\"');
 649         for(i = 0; i < bufsize - 1; i++)
 650         {
 651                 int ch = read_c(env);
 652                 if(ch == EOF)
 653                 {
 654                         printf("Unexpected end of quoted string!\n");
 655                         exit(1);
 656                 }
 657                 if(ch == '\"') break;
 658
 659                 buf[i] = ch;
 660         }
 661         if(i == bufsize - 1)
 662         {
 663                 printf("Quoted string too long!\n");
 664                 exit(1);
 665         }
 666         buf[i] = 0;
 667         return buf;
 668 }
 669
 670 static long read_long2(io_env_t *env, char **endptr)
 671 {
 672         static char buf[1024];
 673         return strtol(read_str_to(env, buf, sizeof(buf)), endptr, 0);
 674 }
 675
 676 static long read_long(io_env_t *env)
 677 {
 678         return read_long2(env, NULL);
 679 }
 680
 681 static ir_node *get_node_or_null(io_env_t *env, long nodenr)
 682 {
 683         ir_node *node = (ir_node *) get_id(env, nodenr);
 684         if(node && node->kind != k_ir_node)
 685         {
 686                 panic("Irn ID %ld collides with something else in line %i:%i\n", nodenr, env->line, env->col);
 687         }
 688         return node;
 689 }
 690
 691 static ir_node *get_node(io_env_t *env, long nodenr)
 692 {
 693         ir_node *node = get_node_or_null(env, nodenr);
 694         if(!node)
 695                 panic("Unknown node: %ld in line %i:%i\n", nodenr, env->line, env->col);
 696
 697         return node;
 698 }
 699
 700 static ir_node *get_node_or_dummy(io_env_t *env, long nodenr)
 701 {
 702         ir_node *node = get_node_or_null(env, nodenr);
 703         if(!node)
 704         {
 705                 node = new_Dummy(mode_X);
 706                 set_id(env, nodenr, node);
 707         }
 708         return node;
 709 }
 710
 711 static ir_type *get_type(io_env_t *env, long typenr)
 712 {
 713         ir_type *type = (ir_type *) get_id(env, typenr);
 714         if(!type)
 715         {
 716                 panic("Unknown type: %ld in line %i:%i\n", typenr, env->line, env->col);
 717         }
 718         else if(type->kind != k_type)
 719         {
 720                 panic("Type ID %ld collides with something else in line %i:%i\n", typenr, env->line, env->col);
 721         }
 722         return type;
 723 }
 724
 725 static ir_type *read_type(io_env_t *env)
 726 {
 727         return get_type(env, read_long(env));
 728 }
 729
 730 static ir_entity *get_entity(io_env_t *env, long entnr)
 731 {
 732         ir_entity *entity = (ir_entity *) get_id(env, entnr);
 733         if(!entity)
 734         {
 735                 printf("Unknown entity: %ld in line %i:%i\n", entnr, env->line, env->col);
 736                 exit(1);
 737         }
 738         else if(entity->kind != k_entity)
 739         {
 740                 panic("Entity ID %ld collides with something else in line %i:%i\n", entnr, env->line, env->col);
 741         }
 742         return entity;
 743 }
 744
 745 static ir_entity *read_entity(io_env_t *env)
 746 {
 747         return get_entity(env, read_long(env));
 748 }
 749
 750 static ir_mode *read_mode(io_env_t *env)
 751 {
 752         static char buf[128];
 753         int i, n;
 754
 755         read_str_to(env, buf, sizeof(buf));
 756
 757         n = get_irp_n_modes();
 758         for(i = 0; i < n; i++)
 759         {
 760                 ir_mode *mode = get_irp_mode(i);
 761                 if(!strcmp(buf, get_mode_name(mode)))
 762                         return mode;
 763         }
 764
 765         printf("Unknown mode \"%s\" in line %i:%i\n", buf, env->line, env->col);
 766         return mode_ANY;
 767 }
 768
 769 static const char *get_typetag_name(typetag_t typetag)
 770 {
 771         switch(typetag)
 772         {
 773                 case tt_iro:         return "opcode";
 774                 case tt_tpo:         return "type";
 775                 case tt_align:       return "align";
 776                 case tt_allocation:  return "allocation";
 777                 case tt_peculiarity: return "peculiarity";
 778                 case tt_pin_state:   return "pin state";
 779                 case tt_type_state:  return "type state";
 780                 case tt_variability: return "variability";
 781                 case tt_visibility:  return "visibility";
 782                 case tt_volatility:  return "volatility";
 783                 default: return "<UNKNOWN>";
 784         }
 785 }
 786
 787 /**
 788  * Read and decode an enum constant.
 789  */
 790 static unsigned read_enum(io_env_t *env, typetag_t typetag)
 791 {
 792         static char buf[128];
 793         unsigned code = symbol(read_str_to(env, buf, sizeof(buf)), typetag);
 794         if(code != SYMERROR)
 795                 return code;
 796
 797         printf("Invalid %s: \"%s\" in %i:%i\n", get_typetag_name(typetag), buf, env->line, env->col);
 798         return 0;
 799 }
 800
 801 #define read_align(env)       ((ir_align)       read_enum(env, tt_align))
 802 #define read_allocation(env)  ((ir_allocation)  read_enum(env, tt_allocation))
 803 #define read_peculiarity(env) ((ir_peculiarity) read_enum(env, tt_peculiarity))
 804 #define read_pin_state(env)   ((op_pin_state)   read_enum(env, tt_pin_state))
 805 #define read_type_state(env)  ((ir_type_state)  read_enum(env, tt_type_state))
 806 #define read_variability(env) ((ir_variability) read_enum(env, tt_variability))
 807 #define read_visibility(env)  ((ir_visibility)  read_enum(env, tt_visibility))
 808 #define read_volatility(env)  ((ir_volatility)  read_enum(env, tt_volatility))
 809
 810 static ir_cons_flags get_cons_flags(io_env_t *env)
 811 {
 812         ir_cons_flags flags = cons_none;
 813
 814         op_pin_state pinstate = read_pin_state(env);
 815         switch(pinstate)
 816         {
 817                 case op_pin_state_floats: flags |= cons_floats; break;
 818                 case op_pin_state_pinned: break;
 819                 default:
 820                         panic("Error in %i:%i: Invalid pinstate: %s", env->line, env->col, get_op_pin_state_name(pinstate));
 821         }
 822
 823         if(read_volatility(env) == volatility_is_volatile) flags |= cons_volatile;
 824         if(read_align(env) == align_non_aligned) flags |= cons_unaligned;
 825
 826         return flags;
 827 }
 828
 829 static tarval *read_tv(io_env_t *env)
 830 {
 831         static char buf[128];
 832         ir_mode *tvmode = read_mode(env);
 833         read_str_to(env, buf, sizeof(buf));
 834         return new_tarval_from_str(buf, strlen(buf), tvmode);
 835 }
 836
 837 /** Reads a type description and remembers it by its id. */
 838 static void import_type(io_env_t *env)
 839 {
 840         char           buf[1024];
 841         int            i;
 842         ir_type       *type;
 843         long           typenr = read_long(env);
 844         const char    *tpop   = read_str(env);
 845         const char    *name   = read_qstr_to(env, buf, sizeof(buf));
 846         unsigned       size   = (unsigned) read_long(env);
 847         unsigned       align  = (unsigned) read_long(env);
 848         ir_type_state  state  = read_type_state(env);
 849         ir_visibility  vis    = read_visibility(env);
 850
 851         ident         *id     = new_id_from_str(name);
 852
 853         switch(symbol(tpop, tt_tpo))
 854         {
 855                 case tpo_array:
 856                 {
 857                         int ndims = (int) read_long(env);
 858                         long elemtypenr = read_long(env);
 859                         ir_type *elemtype = get_type(env, elemtypenr);
 860
 861                         type = new_type_array(id, ndims, elemtype);
 862                         for(i = 0; i < ndims; i++)
 863                         {
 864                                 const char *str = read_str(env);
 865                                 if(strcmp(str, "unknown"))
 866                                 {
 867                                         long lowerbound = strtol(str, NULL, 0);
 868                                         set_array_lower_bound_int(type, i, lowerbound);
 869                                 }
 870                                 str = read_str(env);
 871                                 if(strcmp(str, "unknown"))
 872                                 {
 873                                         long upperbound = strtol(str, NULL, 0);
 874                                         set_array_upper_bound_int(type, i, upperbound);
 875                                 }
 876                         }
 877                         set_type_size_bytes(type, size);
 878                         break;
 879                 }
 880
 881                 case tpo_class:
 882                         type = new_type_class(id);
 883                         set_type_size_bytes(type, size);
 884                         break;
 885
 886                 case tpo_method:
 887                 {
 888                         int nparams  = (int) read_long(env);
 889                         int nresults = (int) read_long(env);
 890
 891                         type = new_type_method(id, nparams, nresults);
 892
 893                         for(i = 0; i < nparams; i++)
 894                         {
 895                                 long     typenr = read_long(env);
 896                                 ir_type *paramtype = get_type(env, typenr);
 897
 898                                 set_method_param_type(type, i, paramtype);
 899                         }
 900                         for(i = 0; i < nresults; i++)
 901                         {
 902                                 long typenr = read_long(env);
 903                                 ir_type *restype = get_type(env, typenr);
 904
 905                                 set_method_res_type(type, i, restype);
 906                         }
 907                         break;
 908                 }
 909
 910                 case tpo_pointer:
 911                 {
 912                         ir_mode *mode = read_mode(env);
 913                         ir_type *pointsto = get_type(env, read_long(env));
 914                         type = new_type_pointer(id, pointsto, mode);
 915                         break;
 916                 }
 917
 918                 case tpo_primitive:
 919                 {
 920                         ir_mode *mode = read_mode(env);
 921                         type = new_type_primitive(id, mode);
 922                         break;
 923                 }
 924
 925                 case tpo_struct:
 926                         type = new_type_struct(id);
 927                         set_type_size_bytes(type, size);
 928                         break;
 929
 930                 case tpo_union:
 931                         type = new_type_union(id);
 932                         set_type_size_bytes(type, size);
 933                         break;
 934
 935                 case tpo_unknown:
 936                         return;   // ignore unknown type
 937
 938                 default:
 939                         if(typenr != 0)  // ignore global type
 940                                 printf("Unknown type kind: \"%s\" in line %i:%i\n", tpop, env->line, env->col);
 941                         skip_to(env, '\n');
 942                         return;
 943         }
 944
 945         set_type_alignment_bytes(type, align);
 946         set_type_visibility(type, vis);
 947
 948         if(state == layout_fixed)
 949                 ARR_APP1(ir_type *, env->fixedtypes, type);
 950
 951         set_id(env, typenr, type);
 952         printf("Insert type %s %ld\n", name, typenr);
 953 }
 954
 955 /** Reads an entity description and remembers it by its id. */
 956 static void import_entity(io_env_t *env)
 957 {
 958         char          buf[1024], buf2[1024];
 959         long          entnr       = read_long(env);
 960         const char   *name        = read_qstr_to(env, buf, sizeof(buf));
 961         const char   *ld_name     = read_qstr_to(env, buf2, sizeof(buf2));
 962         long          typenr      = read_long(env);
 963         long          ownertypenr = read_long(env);
 964
 965         ir_type   *type      = get_type(env, typenr);
 966         ir_type   *ownertype = !ownertypenr ? get_glob_type() : get_type(env, ownertypenr);
 967         ir_entity *entity    = new_entity(ownertype, new_id_from_str(name), type);
 968
 969         if(*ld_name) set_entity_ld_ident(entity, new_id_from_str(ld_name));
 970         set_entity_offset     (entity, (int) read_long(env));
 971         set_entity_offset_bits_remainder(entity, (unsigned char) read_long(env));
 972         set_entity_allocation (entity, read_allocation(env));
 973         set_entity_visibility (entity, read_visibility(env));
 974         set_entity_variability(entity, read_variability(env));
 975         set_entity_peculiarity(entity, read_peculiarity(env));
 976         set_entity_volatility (entity, read_volatility(env));
 977
 978         if(get_entity_variability(entity) != variability_uninitialized
 979                 && get_entity_visibility(entity) != visibility_external_allocated)
 980         {
 981                 if(is_compound_entity(entity))
 982                 {
 983                         if(!strcmp(read_str_to(env, buf2, sizeof(buf2)), "initializer"))
 984                         {
 985                                 panic("moep");
 986                         }
 987                         else
 988                         {
 989                                 int i, n = (int) read_long(env);
 990                                 for(i = 0; i < n; i++)
 991                                 {
 992                                         ir_entity *member = get_entity(env, read_long(env));
 993                                         ir_node   *irn    = get_node_or_dummy(env, read_long(env));
 994                                         add_compound_ent_value(entity, irn, member);
 995                                 }
 996                         }
 997                 }
 998                 else
 999                 {
1000                         ir_node *irn = get_node_or_dummy(env, read_long(env));
1001                         set_atomic_ent_value(entity, irn);
1002                 }
1003         }
1004
1005         set_id(env, entnr, entity);
1006         printf("Insert entity %s %ld\n", name, entnr);
1007 }
1008
1009 /** Parses the whole type graph. */
1010 static int parse_typegraph(io_env_t *env)
1011 {
1012         const char *kind;
1013         long curfpos;
1014
1015         EXPECT('{');
1016
1017         curfpos = ftell(env->file);
1018
1019         current_ir_graph = get_const_code_irg();
1020
1021         // parse all types first
1022         while(1)
1023         {
1024                 kind = read_str(env);
1025                 if(kind[0] == '}' && !kind[1]) break;
1026
1027                 if(!strcmp(kind, "type"))
1028                         import_type(env);
1029                 else
1030                         skip_to(env, '\n');
1031         }
1032
1033         // now parse rest
1034         fseek(env->file, curfpos, SEEK_SET);
1035         while(1)
1036         {
1037                 kind = read_str(env);
1038                 if(kind[0] == '}' && !kind[1]) break;
1039
1040                 if(!strcmp(kind, "type"))
1041                         skip_to(env, '\n');
1042                 else if(!strcmp(kind, "entity"))
1043                         import_entity(env);
1044                 else
1045                 {
1046                         printf("Type graph element not supported yet: \"%s\"\n", kind);
1047                         skip_to(env, '\n');
1048                 }
1049         }
1050         return 1;
1051 }
1052
1053 static int read_node_header(io_env_t *env, long *nodenr, long **preds, const char **nodename)
1054 {
1055         int numpreds;
1056         *nodename = read_str(env);
1057         if((*nodename)[0] == '}' && !(*nodename)[1]) return -1;  // end-of-graph
1058
1059         *nodenr = read_long(env);
1060
1061         ARR_RESIZE(ir_node *, *preds, 0);
1062
1063         EXPECT('[');
1064         for(numpreds = 0; !feof(env->file); numpreds++)
1065         {
1066                 char *endptr;
1067                 ARR_APP1(long, *preds, read_long2(env, &endptr));
1068                 if(*endptr == ']') break;
1069         }
1070         return numpreds;
1071 }
1072
1073 /** Parses an IRG. */
1074 static int parse_graph(io_env_t *env, ir_graph *irg)
1075 {
1076         long       *preds = NEW_ARR_F(long, 16);
1077         ir_node   **prednodes = NEW_ARR_F(ir_node *, 16);
1078         int         i, numpreds, ret = 1;
1079         long        nodenr;
1080         const char *nodename;
1081         ir_node    *node, *newnode;
1082
1083         current_ir_graph = irg;
1084
1085         EXPECT('{');
1086
1087         while(1)
1088         {
1089                 numpreds = read_node_header(env, &nodenr, &preds, &nodename);
1090                 if(numpreds == -1) break;  // end-of-graph
1091                 if(!numpreds)
1092                 {
1093                         printf("Node %s %ld is missing predecessors!", nodename, nodenr);
1094                         ret = 0;
1095                         break;
1096                 }
1097
1098                 ARR_RESIZE(ir_node *, prednodes, numpreds);
1099                 for(i = 0; i < numpreds - 1; i++)
1100                         prednodes[i] = get_node_or_dummy(env, preds[i + 1]);
1101
1102                 node = get_node_or_null(env, nodenr);
1103                 newnode = NULL;
1104
1105                 EXPECT('{');
1106
1107                 switch(symbol(nodename, tt_iro))
1108                 {
1109                         case iro_End:
1110                         {
1111                                 ir_node *newendblock = get_node(env, preds[0]);
1112                                 newnode = get_irg_end(current_ir_graph);
1113                                 exchange(get_nodes_block(newnode), newendblock);
1114                                 for(i = 0; i < numpreds - 1; i++)
1115                                         add_irn_n(newnode, prednodes[i]);
1116                                 break;
1117                         }
1118
1119                         case iro_Start:
1120                         {
1121                                 ir_node *newstartblock = get_node(env, preds[0]);
1122                                 newnode = get_irg_start(current_ir_graph);
1123                                 exchange(get_nodes_block(newnode), newstartblock);
1124                                 break;
1125                         }
1126
1127                         case iro_Block:
1128                         {
1129                                 if(preds[0] != nodenr)
1130                                 {
1131                                         printf("Invalid block: preds[0] != nodenr (%ld != %ld)\n",
1132                                                 preds[0], nodenr);
1133                                         ret = 0;
1134                                         goto endloop;
1135                                 }
1136
1137                                 newnode = new_Block(numpreds - 1, prednodes);
1138                                 break;
1139                         }
1140
1141                         case iro_Anchor:
1142                                 newnode = current_ir_graph->anchor;
1143                                 for(i = 0; i < numpreds - 1; i++)
1144                                         set_irn_n(newnode, i, prednodes[i]);
1145                                 set_irn_n(newnode, -1, get_node(env, preds[0]));
1146                                 break;
1147
1148                         case iro_SymConst:
1149                         {
1150                                 long entnr = read_long(env);
1151                                 union symconst_symbol sym;
1152                                 sym.entity_p = get_entity(env, entnr);
1153                                 newnode = new_SymConst(mode_P, sym, symconst_addr_ent);
1154                                 break;
1155                         }
1156
1157                         #include "gen_irio_import.inl"
1158
1159                         default:
1160                                 goto notsupported;
1161                 }
1162
1163                 EXPECT('}');
1164
1165                 if(!newnode)
1166                 {
1167 notsupported:
1168                         panic("Node type not supported yet: %s in line %i:%i\n", nodename, env->line, env->col);
1169                 }
1170
1171                 if(node)
1172                         exchange(node, newnode);
1173                 /* Always update hash entry to avoid more uses of id nodes */
1174                 set_id(env, nodenr, newnode);
1175                 //printf("Insert %s %ld\n", nodename, nodenr);
1176         }
1177
1178 endloop:
1179         DEL_ARR_F(preds);
1180         DEL_ARR_F(prednodes);
1181
1182         return ret;
1183 }
1184
1185 /** Imports an previously exported textual representation of an (maybe partial) irp */
1186 void ir_import(const char *filename)
1187 {
1188         int oldoptimize = get_optimize();
1189         firm_verification_t oldver = get_node_verification_mode();
1190         io_env_t ioenv;
1191         io_env_t *env = &ioenv;
1192         int i, n;
1193
1194         symtbl_init();
1195
1196         memset(env, 0, sizeof(*env));
1197         env->idset = new_set(id_cmp, 128);
1198         env->fixedtypes = NEW_ARR_F(ir_type *, 0);
1199
1200         env->file = fopen(filename, "rt");
1201         if(!env->file)
1202         {
1203                 perror(filename);
1204                 exit(1);
1205         }
1206
1207         set_optimize(0);
1208         do_node_verification(FIRM_VERIFICATION_OFF);
1209
1210         while(1)
1211         {
1212                 const char *str = read_str(env);
1213                 if(!*str) break;
1214                 if(!strcmp(str, "typegraph"))
1215                 {
1216                         if(!parse_typegraph(env)) break;
1217                 }
1218                 else if(!strcmp(str, "irg"))
1219                 {
1220                         ir_graph *irg = new_ir_graph(get_entity(env, read_long(env)), 0);
1221                         if(!parse_graph(env, irg)) break;
1222                 }
1223                 else if(!strcmp(str, "constirg"))
1224                 {
1225                         if(!parse_graph(env, get_const_code_irg())) break;
1226                 }
1227         }
1228
1229         n = ARR_LEN(env->fixedtypes);
1230         for(i = 0; i < n; i++)
1231                 set_type_state(env->fixedtypes[i], layout_fixed);
1232
1233         DEL_ARR_F(env->fixedtypes);
1234
1235         del_set(env->idset);
1236
1237         irp_finalize_cons();
1238
1239         do_node_verification(oldver);
1240         set_optimize(oldoptimize);
1241
1242         fclose(env->file);
1243 }