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                                 int i, n = get_compound_ent_n_values(ent);
 401                                 fputs("noninitializer ", env->file);
 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
 447         if(env->ignoreblocks && opcode == iro_Block)
 448                 return;
 449
 450         n = get_irn_arity(irn);
 451
 452         fprintf(env->file, "\t%s %ld [ ", get_irn_opname(irn), get_irn_node_nr(irn));
 453
 454         for(i = -1; i < n; i++)
 455         {
 456                 ir_node *pred = get_irn_n(irn, i);
 457                 if(pred == NULL) {
 458                         /* Anchor node may have NULL predecessors */
 459                         assert(is_Anchor(irn));
 460                         fputs("-1 ", env->file);
 461                 } else {
 462                         fprintf(env->file, "%ld ", get_irn_node_nr(pred));
 463                 }
 464         }
 465
 466         fprintf(env->file, "] { ");
 467
 468         switch(opcode)
 469         {
 470                 #include "gen_irio_export.inl"
 471         }
 472         fputs("}\n", env->file);
 473 }
 474
 475 /** Exports the whole irp to the given file in a textual form. */
 476 void ir_export(const char *filename)
 477 {
 478         io_env_t env;
 479         int i, n_irgs = get_irp_n_irgs(), n_pseudoirgs = get_irp_n_pseudo_irgs();
 480
 481         env.file = fopen(filename, "wt");
 482         if(!env.file)
 483         {
 484                 perror(filename);
 485                 return;
 486         }
 487
 488         fputs("typegraph {\n", env.file);
 489
 490         type_walk_plus_frames(NULL, export_type_or_ent, &env);
 491         /* TODO: Visit frame types and "types for value params"? */
 492
 493         for(i = 0; i < n_irgs; i++)
 494         {
 495                 ir_graph *irg = get_irp_irg(i);
 496
 497                 fprintf(env.file, "}\n\nirg %ld {\n", get_entity_nr(get_irg_entity(irg)));
 498
 499                 env.ignoreblocks = 0;
 500                 irg_block_walk_graph(irg, NULL, export_node, &env);
 501
 502                 env.ignoreblocks = 1;
 503                 irg_walk_anchors(irg, NULL, export_node, &env);
 504         }
 505
 506         fputs("}\n\nconstirg {\n", env.file);
 507         walk_const_code(NULL, export_node, &env);
 508         fputs("}\n", env.file);
 509
 510         fclose(env.file);
 511 }
 512
 513 /** Exports the given irg to the given file. */
 514 void ir_export_irg(ir_graph *irg, const char *filename)
 515 {
 516         io_env_t env;
 517
 518         env.file = fopen(filename, "wt");
 519         if(!env.file)
 520         {
 521                 perror(filename);
 522                 return;
 523         }
 524
 525         fputs("typegraph {\n", env.file);
 526
 527         type_walk_irg(irg, NULL, export_type_or_ent, &env);
 528
 529         fprintf(env.file, "}\n\nirg %ld {\n", get_entity_nr(get_irg_entity(irg)));
 530
 531         env.ignoreblocks = 0;
 532         irg_block_walk_graph(irg, NULL, export_node, &env);
 533
 534         env.ignoreblocks = 1;
 535         irg_walk_anchors(irg, NULL, export_node, &env);
 536
 537         /* TODO: Only output needed constants */
 538         fputs("}\n\nconstirg {\n", env.file);
 539         walk_const_code(NULL, export_node, &env);
 540         fputs("}\n", env.file);
 541
 542         fclose(env.file);
 543 }
 544
 545 static int read_c(io_env_t *env)
 546 {
 547         int ch = fgetc(env->file);
 548         switch(ch)
 549         {
 550                 case '\t':
 551                         env->col += 4;
 552                         break;
 553
 554                 case '\n':
 555                         env->col = 0;
 556                         env->line++;
 557                         break;
 558
 559                 default:
 560                         env->col++;
 561                         break;
 562         }
 563         return ch;
 564 }
 565
 566 /** Returns the first non-whitespace character or EOF. **/
 567 static int skip_ws(io_env_t *env)
 568 {
 569         while(1)
 570         {
 571                 int ch = read_c(env);
 572                 switch(ch)
 573                 {
 574                         case ' ':
 575                         case '\t':
 576                         case '\n':
 577                         case '\r':
 578                                 break;
 579
 580                         default:
 581                                 return ch;
 582                 }
 583         }
 584 }
 585
 586 static void skip_to(io_env_t *env, char to_ch)
 587 {
 588         int ch;
 589         do
 590         {
 591                 ch = read_c(env);
 592         }
 593         while(ch != to_ch && ch != EOF);
 594 }
 595
 596 static int expect_char(io_env_t *env, char ch)
 597 {
 598         int curch = skip_ws(env);
 599         if(curch != ch)
 600         {
 601                 printf("Unexpected char '%c', expected '%c' in line %i:%i\n", curch, ch, env->line, env->col);
 602                 return 0;
 603         }
 604         return 1;
 605 }
 606
 607 #define EXPECT(c) if(expect_char(env, (c))) {} else return 0
 608 #define EXPECT_OR_EXIT(c) if(expect_char(env, (c))) {} else exit(1)
 609
 610 inline static const char *read_str_to(io_env_t *env, char *buf, size_t bufsize)
 611 {
 612         size_t i;
 613         for(i = 0; i < bufsize - 1; i++)
 614         {
 615                 int ch = read_c(env);
 616                 if(ch == EOF) break;
 617                 switch(ch)
 618                 {
 619                         case ' ':
 620                         case '\t':
 621                         case '\n':
 622                         case '\r':
 623                                 if(i != 0)
 624                                         goto endofword;
 625                                 i--;    // skip whitespace
 626                                 break;
 627
 628                         default:
 629                                 buf[i] = ch;
 630                                 break;
 631                 }
 632         }
 633 endofword:
 634         buf[i] = 0;
 635         return buf;
 636 }
 637
 638 static const char *read_str(io_env_t *env)
 639 {
 640         static char buf[1024];
 641         return read_str_to(env, buf, sizeof(buf));
 642 }
 643
 644 static const char *read_qstr_to(io_env_t *env, char *buf, size_t bufsize)
 645 {
 646         size_t i;
 647         EXPECT_OR_EXIT('\"');
 648         for(i = 0; i < bufsize - 1; i++)
 649         {
 650                 int ch = read_c(env);
 651                 if(ch == EOF)
 652                 {
 653                         printf("Unexpected end of quoted string!\n");
 654                         exit(1);
 655                 }
 656                 if(ch == '\"') break;
 657
 658                 buf[i] = ch;
 659         }
 660         if(i == bufsize - 1)
 661         {
 662                 printf("Quoted string too long!\n");
 663                 exit(1);
 664         }
 665         buf[i] = 0;
 666         return buf;
 667 }
 668
 669 static long read_long2(io_env_t *env, char **endptr)
 670 {
 671         static char buf[1024];
 672         return strtol(read_str_to(env, buf, sizeof(buf)), endptr, 0);
 673 }
 674
 675 static long read_long(io_env_t *env)
 676 {
 677         return read_long2(env, NULL);
 678 }
 679
 680 static ir_node *get_node_or_null(io_env_t *env, long nodenr)
 681 {
 682         ir_node *node = (ir_node *) get_id(env, nodenr);
 683         if(node && node->kind != k_ir_node)
 684         {
 685                 panic("Irn ID %ld collides with something else in line %i:%i\n", nodenr, env->line, env->col);
 686         }
 687         return node;
 688 }
 689
 690 static ir_node *get_node(io_env_t *env, long nodenr)
 691 {
 692         ir_node *node = get_node_or_null(env, nodenr);
 693         if(!node)
 694                 panic("Unknown node: %ld in line %i:%i\n", nodenr, env->line, env->col);
 695
 696         return node;
 697 }
 698
 699 static ir_node *get_node_or_dummy(io_env_t *env, long nodenr)
 700 {
 701         ir_node *node = get_node_or_null(env, nodenr);
 702         if(!node)
 703         {
 704                 node = new_Dummy(mode_X);
 705                 set_id(env, nodenr, node);
 706         }
 707         return node;
 708 }
 709
 710 static ir_type *get_type(io_env_t *env, long typenr)
 711 {
 712         ir_type *type = (ir_type *) get_id(env, typenr);
 713         if(!type)
 714         {
 715                 panic("Unknown type: %ld in line %i:%i\n", typenr, env->line, env->col);
 716         }
 717         else if(type->kind != k_type)
 718         {
 719                 panic("Type ID %ld collides with something else in line %i:%i\n", typenr, env->line, env->col);
 720         }
 721         return type;
 722 }
 723
 724 static ir_type *read_type(io_env_t *env)
 725 {
 726         return get_type(env, read_long(env));
 727 }
 728
 729 static ir_entity *get_entity(io_env_t *env, long entnr)
 730 {
 731         ir_entity *entity = (ir_entity *) get_id(env, entnr);
 732         if(!entity)
 733         {
 734                 printf("Unknown entity: %ld in line %i:%i\n", entnr, env->line, env->col);
 735                 exit(1);
 736         }
 737         else if(entity->kind != k_entity)
 738         {
 739                 panic("Entity ID %ld collides with something else in line %i:%i\n", entnr, env->line, env->col);
 740         }
 741         return entity;
 742 }
 743
 744 static ir_entity *read_entity(io_env_t *env)
 745 {
 746         return get_entity(env, read_long(env));
 747 }
 748
 749 static ir_mode *read_mode(io_env_t *env)
 750 {
 751         static char buf[128];
 752         int i, n;
 753
 754         read_str_to(env, buf, sizeof(buf));
 755
 756         n = get_irp_n_modes();
 757         for(i = 0; i < n; i++)
 758         {
 759                 ir_mode *mode = get_irp_mode(i);
 760                 if(!strcmp(buf, get_mode_name(mode)))
 761                         return mode;
 762         }
 763
 764         printf("Unknown mode \"%s\" in line %i:%i\n", buf, env->line, env->col);
 765         return mode_ANY;
 766 }
 767
 768 static const char *get_typetag_name(typetag_t typetag)
 769 {
 770         switch(typetag)
 771         {
 772                 case tt_iro:         return "opcode";
 773                 case tt_tpo:         return "type";
 774                 case tt_align:       return "align";
 775                 case tt_allocation:  return "allocation";
 776                 case tt_peculiarity: return "peculiarity";
 777                 case tt_pin_state:   return "pin state";
 778                 case tt_type_state:  return "type state";
 779                 case tt_variability: return "variability";
 780                 case tt_visibility:  return "visibility";
 781                 case tt_volatility:  return "volatility";
 782                 default: return "<UNKNOWN>";
 783         }
 784 }
 785
 786 /**
 787  * Read and decode an enum constant.
 788  */
 789 static unsigned read_enum(io_env_t *env, typetag_t typetag)
 790 {
 791         static char buf[128];
 792         unsigned code = symbol(read_str_to(env, buf, sizeof(buf)), typetag);
 793         if(code != SYMERROR)
 794                 return code;
 795
 796         printf("Invalid %s: \"%s\" in %i:%i\n", get_typetag_name(typetag), buf, env->line, env->col);
 797         return 0;
 798 }
 799
 800 #define read_align(env)            ((ir_align)              read_enum(env, tt_align))
 801 #define read_allocation(env)       ((ir_allocation)         read_enum(env, tt_allocation))
 802 #define read_peculiarity(env)      ((ir_peculiarity)        read_enum(env, tt_peculiarity))
 803 #define read_pin_state(env)        ((op_pin_state)          read_enum(env, tt_pin_state))
 804 #define read_type_state(env)       ((ir_type_state)         read_enum(env, tt_type_state))
 805 #define read_variability(env)      ((ir_variability)        read_enum(env, tt_variability))
 806 #define read_visibility(env)       ((ir_visibility)         read_enum(env, tt_visibility))
 807 #define read_volatility(env)       ((ir_volatility)         read_enum(env, tt_volatility))
 808 #define read_initializer_kind(env) ((ir_initializer_kind_t) read_enum(env, tt_initializer))
 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 static ir_initializer_t *read_initializer(io_env_t *env)
 838 {
 839         FILE *f = env->file;
 840         ir_initializer_kind_t ini_kind = read_initializer_kind(env);
 841
 842         switch(ini_kind)
 843         {
 844                 case IR_INITIALIZER_CONST:
 845                 {
 846                         ir_node *irn = get_node_or_dummy(env, read_long(env));
 847                         return create_initializer_const(irn);
 848                 }
 849
 850                 case IR_INITIALIZER_TARVAL:
 851                         return create_initializer_tarval(read_tv(env));
 852
 853                 case IR_INITIALIZER_NULL:
 854                         return get_initializer_null();
 855
 856                 case IR_INITIALIZER_COMPOUND:
 857                 {
 858                         unsigned i, n = (unsigned) read_long(env);
 859                         ir_initializer_t *ini = create_initializer_compound(n);
 860                         for(i = 0; i < n; i++)
 861                         {
 862                                 ir_initializer_t *curini = read_initializer(env);
 863                                 set_initializer_compound_value(ini, i, curini);
 864                         }
 865                         return ini;
 866                 }
 867
 868                 default:
 869                         panic("Unknown initializer kind");
 870         }
 871 }
 872
 873
 874 /** Reads a type description and remembers it by its id. */
 875 static void import_type(io_env_t *env)
 876 {
 877         char           buf[1024];
 878         int            i;
 879         ir_type       *type;
 880         long           typenr = read_long(env);
 881         const char    *tpop   = read_str(env);
 882         const char    *name   = read_qstr_to(env, buf, sizeof(buf));
 883         unsigned       size   = (unsigned) read_long(env);
 884         unsigned       align  = (unsigned) read_long(env);
 885         ir_type_state  state  = read_type_state(env);
 886         ir_visibility  vis    = read_visibility(env);
 887
 888         ident         *id     = new_id_from_str(name);
 889
 890         switch(symbol(tpop, tt_tpo))
 891         {
 892                 case tpo_array:
 893                 {
 894                         int ndims = (int) read_long(env);
 895                         long elemtypenr = read_long(env);
 896                         ir_type *elemtype = get_type(env, elemtypenr);
 897
 898                         type = new_type_array(id, ndims, elemtype);
 899                         for(i = 0; i < ndims; i++)
 900                         {
 901                                 const char *str = read_str(env);
 902                                 if(strcmp(str, "unknown"))
 903                                 {
 904                                         long lowerbound = strtol(str, NULL, 0);
 905                                         set_array_lower_bound_int(type, i, lowerbound);
 906                                 }
 907                                 str = read_str(env);
 908                                 if(strcmp(str, "unknown"))
 909                                 {
 910                                         long upperbound = strtol(str, NULL, 0);
 911                                         set_array_upper_bound_int(type, i, upperbound);
 912                                 }
 913                         }
 914                         set_type_size_bytes(type, size);
 915                         break;
 916                 }
 917
 918                 case tpo_class:
 919                         type = new_type_class(id);
 920                         set_type_size_bytes(type, size);
 921                         break;
 922
 923                 case tpo_method:
 924                 {
 925                         int nparams  = (int) read_long(env);
 926                         int nresults = (int) read_long(env);
 927
 928                         type = new_type_method(id, nparams, nresults);
 929
 930                         for(i = 0; i < nparams; i++)
 931                         {
 932                                 long     typenr = read_long(env);
 933                                 ir_type *paramtype = get_type(env, typenr);
 934
 935                                 set_method_param_type(type, i, paramtype);
 936                         }
 937                         for(i = 0; i < nresults; i++)
 938                         {
 939                                 long typenr = read_long(env);
 940                                 ir_type *restype = get_type(env, typenr);
 941
 942                                 set_method_res_type(type, i, restype);
 943                         }
 944                         break;
 945                 }
 946
 947                 case tpo_pointer:
 948                 {
 949                         ir_mode *mode = read_mode(env);
 950                         ir_type *pointsto = get_type(env, read_long(env));
 951                         type = new_type_pointer(id, pointsto, mode);
 952                         break;
 953                 }
 954
 955                 case tpo_primitive:
 956                 {
 957                         ir_mode *mode = read_mode(env);
 958                         type = new_type_primitive(id, mode);
 959                         break;
 960                 }
 961
 962                 case tpo_struct:
 963                         type = new_type_struct(id);
 964                         set_type_size_bytes(type, size);
 965                         break;
 966
 967                 case tpo_union:
 968                         type = new_type_union(id);
 969                         set_type_size_bytes(type, size);
 970                         break;
 971
 972                 case tpo_unknown:
 973                         return;   // ignore unknown type
 974
 975                 default:
 976                         if(typenr != 0)  // ignore global type
 977                                 printf("Unknown type kind: \"%s\" in line %i:%i\n", tpop, env->line, env->col);
 978                         skip_to(env, '\n');
 979                         return;
 980         }
 981
 982         set_type_alignment_bytes(type, align);
 983         set_type_visibility(type, vis);
 984
 985         if(state == layout_fixed)
 986                 ARR_APP1(ir_type *, env->fixedtypes, type);
 987
 988         set_id(env, typenr, type);
 989         printf("Insert type %s %ld\n", name, typenr);
 990 }
 991
 992 /** Reads an entity description and remembers it by its id. */
 993 static void import_entity(io_env_t *env)
 994 {
 995         char          buf[1024], buf2[1024];
 996         long          entnr       = read_long(env);
 997         const char   *name        = read_qstr_to(env, buf, sizeof(buf));
 998         const char   *ld_name     = read_qstr_to(env, buf2, sizeof(buf2));
 999         long          typenr      = read_long(env);
1000         long          ownertypenr = read_long(env);
1001
1002         ir_type   *type      = get_type(env, typenr);
1003         ir_type   *ownertype = !ownertypenr ? get_glob_type() : get_type(env, ownertypenr);
1004         ir_entity *entity    = new_entity(ownertype, new_id_from_str(name), type);
1005
1006         if(*ld_name) set_entity_ld_ident(entity, new_id_from_str(ld_name));
1007         set_entity_offset     (entity, (int) read_long(env));
1008         set_entity_offset_bits_remainder(entity, (unsigned char) read_long(env));
1009         set_entity_allocation (entity, read_allocation(env));
1010         set_entity_visibility (entity, read_visibility(env));
1011         set_entity_variability(entity, read_variability(env));
1012         set_entity_peculiarity(entity, read_peculiarity(env));
1013         set_entity_volatility (entity, read_volatility(env));
1014
1015         if(get_entity_variability(entity) != variability_uninitialized
1016                 && get_entity_visibility(entity) != visibility_external_allocated)
1017         {
1018                 if(is_compound_entity(entity))
1019                 {
1020                         if(!strcmp(read_str_to(env, buf2, sizeof(buf2)), "initializer"))
1021                         {
1022                                 set_entity_initializer(entity, read_initializer(env));
1023                         }
1024                         else
1025                         {
1026                                 int i, n = (int) read_long(env);
1027                                 for(i = 0; i < n; i++)
1028                                 {
1029                                         ir_entity *member = get_entity(env, read_long(env));
1030                                         ir_node   *irn    = get_node_or_dummy(env, read_long(env));
1031                                         add_compound_ent_value(entity, irn, member);
1032                                 }
1033                         }
1034                 }
1035                 else
1036                 {
1037                         ir_node *irn = get_node_or_dummy(env, read_long(env));
1038                         set_atomic_ent_value(entity, irn);
1039                 }
1040         }
1041
1042         set_id(env, entnr, entity);
1043         printf("Insert entity %s %ld\n", name, entnr);
1044 }
1045
1046 /** Parses the whole type graph. */
1047 static int parse_typegraph(io_env_t *env)
1048 {
1049         const char *kind;
1050         long curfpos;
1051
1052         EXPECT('{');
1053
1054         curfpos = ftell(env->file);
1055
1056         current_ir_graph = get_const_code_irg();
1057
1058         // parse all types first
1059         while(1)
1060         {
1061                 kind = read_str(env);
1062                 if(kind[0] == '}' && !kind[1]) break;
1063
1064                 if(!strcmp(kind, "type"))
1065                         import_type(env);
1066                 else
1067                         skip_to(env, '\n');
1068         }
1069
1070         // now parse rest
1071         fseek(env->file, curfpos, SEEK_SET);
1072         while(1)
1073         {
1074                 kind = read_str(env);
1075                 if(kind[0] == '}' && !kind[1]) break;
1076
1077                 if(!strcmp(kind, "type"))
1078                         skip_to(env, '\n');
1079                 else if(!strcmp(kind, "entity"))
1080                         import_entity(env);
1081                 else
1082                 {
1083                         printf("Type graph element not supported yet: \"%s\"\n", kind);
1084                         skip_to(env, '\n');
1085                 }
1086         }
1087         return 1;
1088 }
1089
1090 static int read_node_header(io_env_t *env, long *nodenr, long **preds, const char **nodename)
1091 {
1092         int numpreds;
1093         *nodename = read_str(env);
1094         if((*nodename)[0] == '}' && !(*nodename)[1]) return -1;  // end-of-graph
1095
1096         *nodenr = read_long(env);
1097
1098         ARR_RESIZE(ir_node *, *preds, 0);
1099
1100         EXPECT('[');
1101         for(numpreds = 0; !feof(env->file); numpreds++)
1102         {
1103                 char *endptr;
1104                 ARR_APP1(long, *preds, read_long2(env, &endptr));
1105                 if(*endptr == ']') break;
1106         }
1107         return numpreds;
1108 }
1109
1110 /** Parses an IRG. */
1111 static int parse_graph(io_env_t *env, ir_graph *irg)
1112 {
1113         long       *preds = NEW_ARR_F(long, 16);
1114         ir_node   **prednodes = NEW_ARR_F(ir_node *, 16);
1115         int         i, numpreds, ret = 1;
1116         long        nodenr;
1117         const char *nodename;
1118         ir_node    *node, *newnode;
1119
1120         current_ir_graph = irg;
1121
1122         EXPECT('{');
1123
1124         while(1)
1125         {
1126                 numpreds = read_node_header(env, &nodenr, &preds, &nodename);
1127                 if(numpreds == -1) break;  // end-of-graph
1128                 if(!numpreds)
1129                 {
1130                         printf("Node %s %ld is missing predecessors!", nodename, nodenr);
1131                         ret = 0;
1132                         break;
1133                 }
1134
1135                 ARR_RESIZE(ir_node *, prednodes, numpreds);
1136                 for(i = 0; i < numpreds - 1; i++)
1137                         prednodes[i] = get_node_or_dummy(env, preds[i + 1]);
1138
1139                 node = get_node_or_null(env, nodenr);
1140                 newnode = NULL;
1141
1142                 EXPECT('{');
1143
1144                 switch(symbol(nodename, tt_iro))
1145                 {
1146                         case iro_End:
1147                         {
1148                                 ir_node *newendblock = get_node(env, preds[0]);
1149                                 newnode = get_irg_end(current_ir_graph);
1150                                 exchange(get_nodes_block(newnode), newendblock);
1151                                 for(i = 0; i < numpreds - 1; i++)
1152                                         add_irn_n(newnode, prednodes[i]);
1153                                 break;
1154                         }
1155
1156                         case iro_Start:
1157                         {
1158                                 ir_node *newstartblock = get_node(env, preds[0]);
1159                                 newnode = get_irg_start(current_ir_graph);
1160                                 exchange(get_nodes_block(newnode), newstartblock);
1161                                 break;
1162                         }
1163
1164                         case iro_Block:
1165                         {
1166                                 if(preds[0] != nodenr)
1167                                 {
1168                                         printf("Invalid block: preds[0] != nodenr (%ld != %ld)\n",
1169                                                 preds[0], nodenr);
1170                                         ret = 0;
1171                                         goto endloop;
1172                                 }
1173
1174                                 newnode = new_Block(numpreds - 1, prednodes);
1175                                 break;
1176                         }
1177
1178                         case iro_Anchor:
1179                                 newnode = current_ir_graph->anchor;
1180                                 for(i = 0; i < numpreds - 1; i++)
1181                                         set_irn_n(newnode, i, prednodes[i]);
1182                                 set_irn_n(newnode, -1, get_node(env, preds[0]));
1183                                 break;
1184
1185                         case iro_SymConst:
1186                         {
1187                                 long entnr = read_long(env);
1188                                 union symconst_symbol sym;
1189                                 sym.entity_p = get_entity(env, entnr);
1190                                 newnode = new_SymConst(mode_P, sym, symconst_addr_ent);
1191                                 break;
1192                         }
1193
1194                         #include "gen_irio_import.inl"
1195
1196                         default:
1197                                 goto notsupported;
1198                 }
1199
1200                 EXPECT('}');
1201
1202                 if(!newnode)
1203                 {
1204 notsupported:
1205                         panic("Node type not supported yet: %s in line %i:%i\n", nodename, env->line, env->col);
1206                 }
1207
1208                 if(node)
1209                         exchange(node, newnode);
1210                 /* Always update hash entry to avoid more uses of id nodes */
1211                 set_id(env, nodenr, newnode);
1212                 //printf("Insert %s %ld\n", nodename, nodenr);
1213         }
1214
1215 endloop:
1216         DEL_ARR_F(preds);
1217         DEL_ARR_F(prednodes);
1218
1219         return ret;
1220 }
1221
1222 /** Imports an previously exported textual representation of an (maybe partial) irp */
1223 void ir_import(const char *filename)
1224 {
1225         int oldoptimize = get_optimize();
1226         firm_verification_t oldver = get_node_verification_mode();
1227         io_env_t ioenv;
1228         io_env_t *env = &ioenv;
1229         int i, n;
1230
1231         symtbl_init();
1232
1233         memset(env, 0, sizeof(*env));
1234         env->idset = new_set(id_cmp, 128);
1235         env->fixedtypes = NEW_ARR_F(ir_type *, 0);
1236
1237         env->file = fopen(filename, "rt");
1238         if(!env->file)
1239         {
1240                 perror(filename);
1241                 exit(1);
1242         }
1243
1244         set_optimize(0);
1245         do_node_verification(FIRM_VERIFICATION_OFF);
1246
1247         while(1)
1248         {
1249                 const char *str = read_str(env);
1250                 if(!*str) break;
1251                 if(!strcmp(str, "typegraph"))
1252                 {
1253                         if(!parse_typegraph(env)) break;
1254                 }
1255                 else if(!strcmp(str, "irg"))
1256                 {
1257                         ir_graph *irg = new_ir_graph(get_entity(env, read_long(env)), 0);
1258                         if(!parse_graph(env, irg)) break;
1259                 }
1260                 else if(!strcmp(str, "constirg"))
1261                 {
1262                         if(!parse_graph(env, get_const_code_irg())) break;
1263                 }
1264         }
1265
1266         n = ARR_LEN(env->fixedtypes);
1267         for(i = 0; i < n; i++)
1268                 set_type_state(env->fixedtypes[i], layout_fixed);
1269
1270         DEL_ARR_F(env->fixedtypes);
1271
1272         del_set(env->idset);
1273
1274         irp_finalize_cons();
1275
1276         do_node_verification(oldver);
1277         set_optimize(oldoptimize);
1278
1279         fclose(env->file);
1280 }