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_t
  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 struct lex_state_t
  56 {
  57         long offs;
  58         int line, col;
  59 } lex_state_t;
  60
  61 typedef enum typetag_t
  62 {
  63         tt_align,
  64         tt_allocation,
  65         tt_builtin,
  66         tt_initializer,
  67         tt_iro,
  68         tt_peculiarity,
  69         tt_pin_state,
  70         tt_tpo,
  71         tt_type_state,
  72         tt_variability,
  73         tt_visibility,
  74         tt_volatility
  75 } typetag_t;
  76
  77 typedef struct symbol_t
  78 {
  79         const char *str;      /**< The name of this symbol. */
  80         typetag_t   typetag;  /**< The type tag of this symbol. */
  81         unsigned    code;     /**< The value of this symbol. */
  82 } symbol_t;
  83
  84 typedef struct id_entry
  85 {
  86         long id;
  87         void *elem;
  88 } id_entry;
  89
  90 /** The symbol table, a set of symbol_t elements. */
  91 static set *symtbl;
  92
  93
  94 /**
  95  * Calculate a hash value for a string.
  96  */
  97 static unsigned string_hash(const char *str, int len)
  98 {
  99         return str[0] * 27893 ^ str[len-1] * 81 ^ str[len >> 1];
 100 }
 101
 102 /**
 103  * Compare two symbol table entries.
 104  */
 105 static int symbol_cmp(const void *elt, const void *key, size_t size)
 106 {
 107         int res;
 108         const symbol_t *entry = (const symbol_t *) elt;
 109         const symbol_t *keyentry = (const symbol_t *) key;
 110         (void) size;
 111         res = entry->typetag - keyentry->typetag;
 112         if(res) return res;
 113         return strcmp(entry->str, keyentry->str);
 114 }
 115
 116 static int id_cmp(const void *elt, const void *key, size_t size)
 117 {
 118         const id_entry *entry = (const id_entry *) elt;
 119         const id_entry *keyentry = (const id_entry *) key;
 120         (void) size;
 121         return entry->id - keyentry->id;
 122 }
 123
 124 /** Initializes the symbol table. May be called more than once without problems. */
 125 static void symtbl_init(void)
 126 {
 127         symbol_t key;
 128
 129         /* Only initialize once */
 130         if(symtbl != NULL)
 131                 return;
 132
 133         symtbl = new_set(symbol_cmp, 256);
 134
 135 #define INSERT(s, tt, cod)                                       \
 136         key.str = (s);                                               \
 137         key.typetag = (tt);                                          \
 138         key.code = (cod);                                            \
 139         set_insert(symtbl, &key, sizeof(key), string_hash(s, sizeof(s)-1) + tt * 17)
 140
 141 #define INSERTENUM(tt, e) INSERT(#e, tt, e)
 142
 143         INSERT("array", tt_tpo, tpo_array);
 144         INSERT("class", tt_tpo, tpo_class);
 145         INSERT("method", tt_tpo, tpo_method);
 146         INSERT("pointer", tt_tpo, tpo_pointer);
 147         INSERT("primitive", tt_tpo, tpo_primitive);
 148         INSERT("struct", tt_tpo, tpo_struct);
 149         INSERT("union", tt_tpo, tpo_union);
 150         INSERT("Unknown", tt_tpo, tpo_unknown);
 151
 152 #include "gen_irio_lex.inl"
 153
 154         INSERTENUM(tt_align, align_non_aligned);
 155         INSERTENUM(tt_align, align_is_aligned);
 156
 157         INSERTENUM(tt_allocation, allocation_automatic);
 158         INSERTENUM(tt_allocation, allocation_parameter);
 159         INSERTENUM(tt_allocation, allocation_dynamic);
 160         INSERTENUM(tt_allocation, allocation_static);
 161
 162         INSERTENUM(tt_pin_state, op_pin_state_floats);
 163         INSERTENUM(tt_pin_state, op_pin_state_pinned);
 164         INSERTENUM(tt_pin_state, op_pin_state_exc_pinned);
 165         INSERTENUM(tt_pin_state, op_pin_state_mem_pinned);
 166
 167         INSERTENUM(tt_type_state, layout_undefined);
 168         INSERTENUM(tt_type_state, layout_fixed);
 169
 170         INSERTENUM(tt_variability, variability_uninitialized);
 171         INSERTENUM(tt_variability, variability_initialized);
 172         INSERTENUM(tt_variability, variability_part_constant);
 173         INSERTENUM(tt_variability, variability_constant);
 174
 175         INSERTENUM(tt_visibility, visibility_local);
 176         INSERTENUM(tt_visibility, visibility_external_visible);
 177         INSERTENUM(tt_visibility, visibility_external_allocated);
 178
 179         INSERTENUM(tt_volatility, volatility_non_volatile);
 180         INSERTENUM(tt_volatility, volatility_is_volatile);
 181
 182         INSERTENUM(tt_peculiarity, peculiarity_description);
 183         INSERTENUM(tt_peculiarity, peculiarity_inherited);
 184         INSERTENUM(tt_peculiarity, peculiarity_existent);
 185
 186         INSERTENUM(tt_initializer, IR_INITIALIZER_CONST);
 187         INSERTENUM(tt_initializer, IR_INITIALIZER_TARVAL);
 188         INSERTENUM(tt_initializer, IR_INITIALIZER_NULL);
 189         INSERTENUM(tt_initializer, IR_INITIALIZER_COMPOUND);
 190
 191         INSERTENUM(tt_builtin, ir_bk_trap);
 192         INSERTENUM(tt_builtin, ir_bk_debugbreak);
 193         INSERTENUM(tt_builtin, ir_bk_return_address);
 194         INSERTENUM(tt_builtin, ir_bk_frame_addess);
 195         INSERTENUM(tt_builtin, ir_bk_prefetch);
 196         INSERTENUM(tt_builtin, ir_bk_ffs);
 197         INSERTENUM(tt_builtin, ir_bk_clz);
 198         INSERTENUM(tt_builtin, ir_bk_ctz);
 199         INSERTENUM(tt_builtin, ir_bk_popcount);
 200         INSERTENUM(tt_builtin, ir_bk_parity);
 201         INSERTENUM(tt_builtin, ir_bk_bswap);
 202         INSERTENUM(tt_builtin, ir_bk_inport);
 203         INSERTENUM(tt_builtin, ir_bk_outport);
 204         INSERTENUM(tt_builtin, ir_bk_inner_trampoline);
 205
 206 #undef INSERTENUM
 207 #undef INSERT
 208 }
 209
 210 /** Returns the according symbol value for the given string and tag, or SYMERROR if none was found. */
 211 static unsigned symbol(const char *str, typetag_t typetag)
 212 {
 213         symbol_t key, *entry;
 214
 215         key.str = str;
 216         key.typetag = typetag;
 217
 218         entry = set_find(symtbl, &key, sizeof(key), string_hash(str, strlen(str)) + typetag * 17);
 219         return entry ? entry->code : SYMERROR;
 220 }
 221
 222 static void *get_id(io_env_t *env, long id)
 223 {
 224         id_entry key, *entry;
 225         key.id = id;
 226
 227         entry = set_find(env->idset, &key, sizeof(key), (unsigned) id);
 228         return entry ? entry->elem : NULL;
 229 }
 230
 231 static void set_id(io_env_t *env, long id, void *elem)
 232 {
 233         id_entry key;
 234         key.id = id;
 235         key.elem = elem;
 236         set_insert(env->idset, &key, sizeof(key), (unsigned) id);
 237 }
 238
 239 static void write_mode(io_env_t *env, ir_mode *mode)
 240 {
 241         fputs(get_mode_name(mode), env->file);
 242         fputc(' ', env->file);
 243 }
 244
 245 static void write_tarval(io_env_t *env, tarval *tv)
 246 {
 247         char buf[1024];
 248         write_mode(env, get_tarval_mode(tv));
 249         tarval_snprintf(buf, sizeof(buf), tv);
 250         fputs(buf, env->file);
 251         fputc(' ', env->file);
 252 }
 253
 254 static void write_pin_state(io_env_t *env, ir_node *irn)
 255 {
 256         fputs(get_op_pin_state_name(get_irn_pinned(irn)), env->file);
 257         fputc(' ', env->file);
 258 }
 259
 260 static void write_volatility(io_env_t *env, ir_node *irn)
 261 {
 262         ir_volatility vol;
 263
 264         if(is_Load(irn)) vol = get_Load_volatility(irn);
 265         else if(is_Store(irn)) vol = get_Store_volatility(irn);
 266         else assert(0 && "Invalid optype for write_volatility");
 267
 268         fputs(get_volatility_name(vol), env->file);
 269         fputc(' ', env->file);
 270 }
 271
 272 static void write_align(io_env_t *env, ir_node *irn)
 273 {
 274         ir_align align;
 275
 276         if(is_Load(irn)) align = get_Load_align(irn);
 277         else if(is_Store(irn)) align = get_Store_align(irn);
 278         else assert(0 && "Invalid optype for write_align");
 279
 280         fputs(get_align_name(align), env->file);
 281         fputc(' ', env->file);
 282 }
 283
 284 static void write_builtin_kind(io_env_t *env, ir_node *irn)
 285 {
 286         fputs(get_builtin_kind_name(get_Builtin_kind(irn)), env->file);
 287         fputc(' ', env->file);
 288 }
 289
 290 static void write_initializer(io_env_t *env, ir_initializer_t *ini)
 291 {
 292         FILE *f = env->file;
 293         ir_initializer_kind_t ini_kind = get_initializer_kind(ini);
 294
 295         fputs(get_initializer_kind_name(ini_kind), f);
 296         fputc(' ', f);
 297
 298         switch(ini_kind)
 299         {
 300                 case IR_INITIALIZER_CONST:
 301                         fprintf(f, "%ld ", get_irn_node_nr(get_initializer_const_value(ini)));
 302                         break;
 303
 304                 case IR_INITIALIZER_TARVAL:
 305                         write_tarval(env, get_initializer_tarval_value(ini));
 306                         break;
 307
 308                 case IR_INITIALIZER_NULL:
 309                         break;
 310
 311                 case IR_INITIALIZER_COMPOUND:
 312                 {
 313                         unsigned i, n = get_initializer_compound_n_entries(ini);
 314                         fprintf(f, "%d ", n);
 315                         for(i = 0; i < n; i++)
 316                                 write_initializer(env, get_initializer_compound_value(ini, i));
 317                         break;
 318                 }
 319
 320                 default:
 321                         panic("Unknown initializer kind");
 322         }
 323 }
 324
 325 static void export_type(io_env_t *env, ir_type *tp)
 326 {
 327         FILE *f = env->file;
 328         int i;
 329         fprintf(f, "\ttype %ld %s \"%s\" %u %u %s %s ",
 330                         get_type_nr(tp),
 331                         get_type_tpop_name(tp),
 332                         get_type_name(tp),
 333                         get_type_size_bytes(tp),
 334                         get_type_alignment_bytes(tp),
 335                         get_type_state_name(get_type_state(tp)),
 336                         get_visibility_name(get_type_visibility(tp)));
 337
 338         switch(get_type_tpop_code(tp))
 339         {
 340                 case tpo_array:
 341                 {
 342                         int n = get_array_n_dimensions(tp);
 343                         fprintf(f, "%i %ld ", n, get_type_nr(get_array_element_type(tp)));
 344                         for(i = 0; i < n; i++)
 345                         {
 346                                 ir_node *lower = get_array_lower_bound(tp, i);
 347                                 ir_node *upper = get_array_upper_bound(tp, i);
 348
 349                                 if(is_Const(lower)) fprintf(f, "%ld ", get_tarval_long(get_Const_tarval(lower)));
 350                                 else panic("Lower array bound is not constant");
 351
 352                                 if(is_Const(upper)) fprintf(f, "%ld ", get_tarval_long(get_Const_tarval(upper)));
 353                                 else if(is_Unknown(upper)) fputs("unknown ", f);
 354                                 else panic("Upper array bound is not constant");
 355                         }
 356                         break;
 357                 }
 358
 359                 case tpo_class:
 360                         /* TODO: inheritance stuff not supported yet */
 361                         printf("Inheritance of classes not supported yet!\n");
 362                         break;
 363
 364                 case tpo_method:
 365                 {
 366                         int nparams = get_method_n_params(tp);
 367                         int nresults = get_method_n_ress(tp);
 368                         fprintf(f, "0x%X 0x%X %i %i ", get_method_calling_convention(tp),
 369                                 get_method_additional_properties(tp), nparams, nresults);
 370                         for(i = 0; i < nparams; i++)
 371                                 fprintf(f, "%ld ", get_type_nr(get_method_param_type(tp, i)));
 372                         for(i = 0; i < nresults; i++)
 373                                 fprintf(f, "%ld ", get_type_nr(get_method_res_type(tp, i)));
 374                         break;
 375                 }
 376
 377                 case tpo_pointer:
 378                         write_mode(env, get_type_mode(tp));
 379                         fprintf(f, "%ld ", get_type_nr(get_pointer_points_to_type(tp)));
 380                         break;
 381
 382                 case tpo_primitive:
 383                         write_mode(env, get_type_mode(tp));
 384                         break;
 385
 386                 case tpo_struct:
 387                         break;
 388
 389                 case tpo_union:
 390                         break;
 391
 392                 case tpo_unknown:
 393                         break;
 394
 395                 default:
 396                         printf("export_type: Unknown type code \"%s\".\n", get_type_tpop_name(tp));
 397                         break;
 398         }
 399         fputc('\n', f);
 400 }
 401
 402 static void export_entity(io_env_t *env, ir_entity *ent)
 403 {
 404         ir_type *owner = get_entity_owner(ent);
 405         fprintf(env->file, "\tentity %ld \"%s\" \"%s\" %ld %ld %d %u %s %s %s %s %s ",
 406                         get_entity_nr(ent),
 407                         get_entity_name(ent),
 408                         ent->ld_name ? get_id_str(ent->ld_name) : "",
 409                         get_type_nr(get_entity_type(ent)),
 410                         get_type_nr(owner),
 411                         get_entity_offset(ent),
 412                         (unsigned) get_entity_offset_bits_remainder(ent),
 413                         get_allocation_name(get_entity_allocation(ent)),
 414                         get_visibility_name(get_entity_visibility(ent)),
 415                         get_variability_name(get_entity_variability(ent)),
 416                         get_peculiarity_name(get_entity_peculiarity(ent)),
 417                         get_volatility_name(get_entity_volatility(ent)));
 418
 419         // TODO: inheritance stuff for class entities not supported yet
 420         if(is_Class_type(owner) && owner != get_glob_type())
 421                 printf("Inheritance of class entities not supported yet!\n");
 422
 423         if(get_entity_variability(ent) != variability_uninitialized
 424                 && get_entity_visibility(ent) != visibility_external_allocated)
 425         {
 426                 if(is_compound_entity(ent))
 427                 {
 428                         if(has_entity_initializer(ent))
 429                         {
 430                                 fputs("initializer ", env->file);
 431                                 write_initializer(env, get_entity_initializer(ent));
 432                         }
 433                         else
 434                         {
 435                                 int i, n = get_compound_ent_n_values(ent);
 436                                 fputs("noninitializer ", env->file);
 437                                 fprintf(env->file, "%d ", n);
 438                                 for(i = 0; i < n; i++)
 439                                 {
 440                                         ir_entity *member = get_compound_ent_value_member(ent, i);
 441                                         ir_node   *irn    = get_compound_ent_value(ent, i);
 442                                         fprintf(env->file, "%ld %ld ", get_entity_nr(member), get_irn_node_nr(irn));
 443                                 }
 444                         }
 445                 }
 446                 else
 447                 {
 448                         ir_node *irn = get_atomic_ent_value(ent);
 449                         fprintf(env->file, "%ld ", get_irn_node_nr(irn));
 450                 }
 451         }
 452
 453         fputc('\n', env->file);
 454 }
 455
 456 static void export_type_or_ent(type_or_ent tore, void *ctx)
 457 {
 458         io_env_t *env = (io_env_t *) ctx;
 459
 460         switch(get_kind(tore.ent))
 461         {
 462                 case k_entity:
 463                         export_entity(env, tore.ent);
 464                         break;
 465
 466                 case k_type:
 467                         export_type(env, tore.typ);
 468                         break;
 469
 470                 default:
 471                         printf("export_type_or_ent: Unknown type or entity.\n");
 472                         break;
 473         }
 474 }
 475
 476 static void export_node(ir_node *irn, void *ctx)
 477 {
 478         io_env_t *env = (io_env_t *) ctx;
 479         int i, n;
 480         unsigned opcode = get_irn_opcode(irn);
 481
 482         if(env->ignoreblocks && opcode == iro_Block)
 483                 return;
 484
 485         n = get_irn_arity(irn);
 486
 487         fprintf(env->file, "\t%s %ld [ ", get_irn_opname(irn), get_irn_node_nr(irn));
 488
 489         for(i = -1; i < n; i++)
 490         {
 491                 ir_node *pred = get_irn_n(irn, i);
 492                 if(pred == NULL) {
 493                         /* Anchor node may have NULL predecessors */
 494                         assert(is_Anchor(irn));
 495                         fputs("-1 ", env->file);
 496                 } else {
 497                         fprintf(env->file, "%ld ", get_irn_node_nr(pred));
 498                 }
 499         }
 500
 501         fprintf(env->file, "] { ");
 502
 503         switch(opcode)
 504         {
 505                 #include "gen_irio_export.inl"
 506         }
 507         fputs("}\n", env->file);
 508 }
 509
 510 /** Exports the whole irp to the given file in a textual form. */
 511 void ir_export(const char *filename)
 512 {
 513         io_env_t env;
 514         int i, n_irgs = get_irp_n_irgs(), n_pseudoirgs = get_irp_n_pseudo_irgs();
 515
 516         env.file = fopen(filename, "wt");
 517         if(!env.file)
 518         {
 519                 perror(filename);
 520                 return;
 521         }
 522
 523         fputs("typegraph {\n", env.file);
 524
 525         type_walk_plus_frames(NULL, export_type_or_ent, &env);
 526         /* TODO: Visit frame types and "types for value params"? */
 527
 528         for(i = 0; i < n_irgs; i++)
 529         {
 530                 ir_graph *irg = get_irp_irg(i);
 531
 532                 fprintf(env.file, "}\n\nirg %ld {\n", get_entity_nr(get_irg_entity(irg)));
 533
 534                 env.ignoreblocks = 0;
 535                 irg_block_walk_graph(irg, NULL, export_node, &env);
 536
 537                 env.ignoreblocks = 1;
 538                 irg_walk_anchors(irg, NULL, export_node, &env);
 539         }
 540
 541         fputs("}\n\nconstirg {\n", env.file);
 542         walk_const_code(NULL, export_node, &env);
 543         fputs("}\n", env.file);
 544
 545         fclose(env.file);
 546 }
 547
 548 /** Exports the given irg to the given file. */
 549 void ir_export_irg(ir_graph *irg, const char *filename)
 550 {
 551         io_env_t env;
 552
 553         env.file = fopen(filename, "wt");
 554         if(!env.file)
 555         {
 556                 perror(filename);
 557                 return;
 558         }
 559
 560         fputs("typegraph {\n", env.file);
 561
 562         type_walk_irg(irg, NULL, export_type_or_ent, &env);
 563
 564         fprintf(env.file, "}\n\nirg %ld {\n", get_entity_nr(get_irg_entity(irg)));
 565
 566         env.ignoreblocks = 0;
 567         irg_block_walk_graph(irg, NULL, export_node, &env);
 568
 569         env.ignoreblocks = 1;
 570         irg_walk_anchors(irg, NULL, export_node, &env);
 571
 572         /* TODO: Only output needed constants */
 573         fputs("}\n\nconstirg {\n", env.file);
 574         walk_const_code(NULL, export_node, &env);
 575         fputs("}\n", env.file);
 576
 577         fclose(env.file);
 578 }
 579
 580 static void save_lex_state(io_env_t *env, lex_state_t *state)
 581 {
 582         state->offs = ftell(env->file);
 583         state->line = env->line;
 584         state->col  = env->col;
 585 }
 586
 587 static void restore_lex_state(io_env_t *env, lex_state_t *state)
 588 {
 589         fseek(env->file, state->offs, SEEK_SET);
 590         env->line = state->line;
 591         env->col  = state->col;
 592 }
 593
 594 static int read_c(io_env_t *env)
 595 {
 596         int ch = fgetc(env->file);
 597         switch(ch)
 598         {
 599                 case '\t':
 600                         env->col += 4;
 601                         break;
 602
 603                 case '\n':
 604                         env->col = 0;
 605                         env->line++;
 606                         break;
 607
 608                 default:
 609                         env->col++;
 610                         break;
 611         }
 612         return ch;
 613 }
 614
 615 /** Returns the first non-whitespace character or EOF. **/
 616 static int skip_ws(io_env_t *env)
 617 {
 618         while(1)
 619         {
 620                 int ch = read_c(env);
 621                 switch(ch)
 622                 {
 623                         case ' ':
 624                         case '\t':
 625                         case '\n':
 626                         case '\r':
 627                                 break;
 628
 629                         default:
 630                                 return ch;
 631                 }
 632         }
 633 }
 634
 635 static void skip_to(io_env_t *env, char to_ch)
 636 {
 637         int ch;
 638         do
 639         {
 640                 ch = read_c(env);
 641         }
 642         while(ch != to_ch && ch != EOF);
 643 }
 644
 645 static int expect_char(io_env_t *env, char ch)
 646 {
 647         int curch = skip_ws(env);
 648         if(curch != ch)
 649         {
 650                 printf("Unexpected char '%c', expected '%c' in line %i:%i\n", curch, ch, env->line, env->col);
 651                 return 0;
 652         }
 653         return 1;
 654 }
 655
 656 #define EXPECT(c) if(expect_char(env, (c))) {} else return 0
 657 #define EXPECT_OR_EXIT(c) if(expect_char(env, (c))) {} else exit(1)
 658
 659 inline static const char *read_str_to(io_env_t *env, char *buf, size_t bufsize)
 660 {
 661         size_t i;
 662         for(i = 0; i < bufsize - 1; i++)
 663         {
 664                 int ch = read_c(env);
 665                 if(ch == EOF) break;
 666                 switch(ch)
 667                 {
 668                         case ' ':
 669                         case '\t':
 670                         case '\n':
 671                         case '\r':
 672                                 if(i != 0)
 673                                         goto endofword;
 674                                 i--;    // skip whitespace
 675                                 break;
 676
 677                         default:
 678                                 buf[i] = ch;
 679                                 break;
 680                 }
 681         }
 682 endofword:
 683         buf[i] = 0;
 684         return buf;
 685 }
 686
 687 static const char *read_str(io_env_t *env)
 688 {
 689         static char buf[1024];
 690         return read_str_to(env, buf, sizeof(buf));
 691 }
 692
 693 static const char *read_qstr_to(io_env_t *env, char *buf, size_t bufsize)
 694 {
 695         size_t i;
 696         EXPECT_OR_EXIT('\"');
 697         for(i = 0; i < bufsize - 1; i++)
 698         {
 699                 int ch = read_c(env);
 700                 if(ch == EOF)
 701                 {
 702                         printf("Unexpected end of quoted string!\n");
 703                         exit(1);
 704                 }
 705                 if(ch == '\"') break;
 706
 707                 buf[i] = ch;
 708         }
 709         if(i == bufsize - 1)
 710         {
 711                 printf("Quoted string too long!\n");
 712                 exit(1);
 713         }
 714         buf[i] = 0;
 715         return buf;
 716 }
 717
 718 static long read_long2(io_env_t *env, char **endptr)
 719 {
 720         static char buf[1024];
 721         return strtol(read_str_to(env, buf, sizeof(buf)), endptr, 0);
 722 }
 723
 724 static long read_long(io_env_t *env)
 725 {
 726         return read_long2(env, NULL);
 727 }
 728
 729 static ir_node *get_node_or_null(io_env_t *env, long nodenr)
 730 {
 731         ir_node *node = (ir_node *) get_id(env, nodenr);
 732         if(node && node->kind != k_ir_node)
 733         {
 734                 panic("Irn ID %ld collides with something else in line %i:%i\n", nodenr, env->line, env->col);
 735         }
 736         return node;
 737 }
 738
 739 static ir_node *get_node(io_env_t *env, long nodenr)
 740 {
 741         ir_node *node = get_node_or_null(env, nodenr);
 742         if(!node)
 743                 panic("Unknown node: %ld in line %i:%i\n", nodenr, env->line, env->col);
 744
 745         return node;
 746 }
 747
 748 static ir_node *get_node_or_dummy(io_env_t *env, long nodenr)
 749 {
 750         ir_node *node = get_node_or_null(env, nodenr);
 751         if(!node)
 752         {
 753                 node = new_Dummy(mode_X);
 754                 set_id(env, nodenr, node);
 755         }
 756         return node;
 757 }
 758
 759 static ir_type *get_type(io_env_t *env, long typenr)
 760 {
 761         ir_type *type = (ir_type *) get_id(env, typenr);
 762         if(!type)
 763         {
 764                 panic("Unknown type: %ld in line %i:%i\n", typenr, env->line, env->col);
 765         }
 766         else if(type->kind != k_type)
 767         {
 768                 panic("Type ID %ld collides with something else in line %i:%i\n", typenr, env->line, env->col);
 769         }
 770         return type;
 771 }
 772
 773 static ir_type *read_type(io_env_t *env)
 774 {
 775         return get_type(env, read_long(env));
 776 }
 777
 778 static ir_entity *get_entity(io_env_t *env, long entnr)
 779 {
 780         ir_entity *entity = (ir_entity *) get_id(env, entnr);
 781         if(!entity)
 782         {
 783                 printf("Unknown entity: %ld in line %i:%i\n", entnr, env->line, env->col);
 784                 exit(1);
 785         }
 786         else if(entity->kind != k_entity)
 787         {
 788                 panic("Entity ID %ld collides with something else in line %i:%i\n", entnr, env->line, env->col);
 789         }
 790         return entity;
 791 }
 792
 793 static ir_entity *read_entity(io_env_t *env)
 794 {
 795         return get_entity(env, read_long(env));
 796 }
 797
 798 static ir_mode *read_mode(io_env_t *env)
 799 {
 800         static char buf[128];
 801         int i, n;
 802
 803         read_str_to(env, buf, sizeof(buf));
 804
 805         n = get_irp_n_modes();
 806         for(i = 0; i < n; i++)
 807         {
 808                 ir_mode *mode = get_irp_mode(i);
 809                 if(!strcmp(buf, get_mode_name(mode)))
 810                         return mode;
 811         }
 812
 813         printf("Unknown mode \"%s\" in line %i:%i\n", buf, env->line, env->col);
 814         return mode_ANY;
 815 }
 816
 817 static const char *get_typetag_name(typetag_t typetag)
 818 {
 819         switch(typetag)
 820         {
 821                 case tt_align:       return "align";
 822                 case tt_allocation:  return "allocation";
 823                 case tt_builtin:     return "builtin kind";
 824                 case tt_initializer: return "initializer kind";
 825                 case tt_iro:         return "opcode";
 826                 case tt_peculiarity: return "peculiarity";
 827                 case tt_pin_state:   return "pin state";
 828                 case tt_tpo:         return "type";
 829                 case tt_type_state:  return "type state";
 830                 case tt_variability: return "variability";
 831                 case tt_visibility:  return "visibility";
 832                 case tt_volatility:  return "volatility";
 833                 default: return "<UNKNOWN>";
 834         }
 835 }
 836
 837 /**
 838  * Read and decode an enum constant.
 839  */
 840 static unsigned read_enum(io_env_t *env, typetag_t typetag)
 841 {
 842         static char buf[128];
 843         unsigned code = symbol(read_str_to(env, buf, sizeof(buf)), typetag);
 844         if(code != SYMERROR)
 845                 return code;
 846
 847         printf("Invalid %s: \"%s\" in %i:%i\n", get_typetag_name(typetag), buf, env->line, env->col);
 848         return 0;
 849 }
 850
 851 #define read_align(env)            ((ir_align)              read_enum(env, tt_align))
 852 #define read_allocation(env)       ((ir_allocation)         read_enum(env, tt_allocation))
 853 #define read_peculiarity(env)      ((ir_peculiarity)        read_enum(env, tt_peculiarity))
 854 #define read_pin_state(env)        ((op_pin_state)          read_enum(env, tt_pin_state))
 855 #define read_type_state(env)       ((ir_type_state)         read_enum(env, tt_type_state))
 856 #define read_variability(env)      ((ir_variability)        read_enum(env, tt_variability))
 857 #define read_visibility(env)       ((ir_visibility)         read_enum(env, tt_visibility))
 858 #define read_volatility(env)       ((ir_volatility)         read_enum(env, tt_volatility))
 859 #define read_initializer_kind(env) ((ir_initializer_kind_t) read_enum(env, tt_initializer))
 860 #define read_builtin_kind(env)     ((ir_builtin_kind)       read_enum(env, tt_builtin))
 861
 862 static ir_cons_flags get_cons_flags(io_env_t *env)
 863 {
 864         ir_cons_flags flags = cons_none;
 865
 866         op_pin_state pinstate = read_pin_state(env);
 867         switch(pinstate)
 868         {
 869                 case op_pin_state_floats: flags |= cons_floats; break;
 870                 case op_pin_state_pinned: break;
 871                 default:
 872                         panic("Error in %i:%i: Invalid pinstate: %s", env->line, env->col, get_op_pin_state_name(pinstate));
 873         }
 874
 875         if(read_volatility(env) == volatility_is_volatile) flags |= cons_volatile;
 876         if(read_align(env) == align_non_aligned) flags |= cons_unaligned;
 877
 878         return flags;
 879 }
 880
 881 static tarval *read_tv(io_env_t *env)
 882 {
 883         static char buf[128];
 884         ir_mode *tvmode = read_mode(env);
 885         read_str_to(env, buf, sizeof(buf));
 886         return new_tarval_from_str(buf, strlen(buf), tvmode);
 887 }
 888
 889 static ir_initializer_t *read_initializer(io_env_t *env)
 890 {
 891         FILE *f = env->file;
 892         ir_initializer_kind_t ini_kind = read_initializer_kind(env);
 893
 894         switch(ini_kind)
 895         {
 896                 case IR_INITIALIZER_CONST:
 897                 {
 898                         ir_node *irn = get_node_or_dummy(env, read_long(env));
 899                         return create_initializer_const(irn);
 900                 }
 901
 902                 case IR_INITIALIZER_TARVAL:
 903                         return create_initializer_tarval(read_tv(env));
 904
 905                 case IR_INITIALIZER_NULL:
 906                         return get_initializer_null();
 907
 908                 case IR_INITIALIZER_COMPOUND:
 909                 {
 910                         unsigned i, n = (unsigned) read_long(env);
 911                         ir_initializer_t *ini = create_initializer_compound(n);
 912                         for(i = 0; i < n; i++)
 913                         {
 914                                 ir_initializer_t *curini = read_initializer(env);
 915                                 set_initializer_compound_value(ini, i, curini);
 916                         }
 917                         return ini;
 918                 }
 919
 920                 default:
 921                         panic("Unknown initializer kind");
 922         }
 923 }
 924
 925
 926 /** Reads a type description and remembers it by its id. */
 927 static void import_type(io_env_t *env)
 928 {
 929         char           buf[1024];
 930         int            i;
 931         ir_type       *type;
 932         long           typenr = read_long(env);
 933         const char    *tpop   = read_str(env);
 934         const char    *name   = read_qstr_to(env, buf, sizeof(buf));
 935         unsigned       size   = (unsigned) read_long(env);
 936         unsigned       align  = (unsigned) read_long(env);
 937         ir_type_state  state  = read_type_state(env);
 938         ir_visibility  vis    = read_visibility(env);
 939
 940         ident         *id     = new_id_from_str(name);
 941
 942         switch(symbol(tpop, tt_tpo))
 943         {
 944                 case tpo_array:
 945                 {
 946                         int ndims = (int) read_long(env);
 947                         long elemtypenr = read_long(env);
 948                         ir_type *elemtype = get_type(env, elemtypenr);
 949
 950                         type = new_type_array(id, ndims, elemtype);
 951                         for(i = 0; i < ndims; i++)
 952                         {
 953                                 const char *str = read_str(env);
 954                                 if(strcmp(str, "unknown"))
 955                                 {
 956                                         long lowerbound = strtol(str, NULL, 0);
 957                                         set_array_lower_bound_int(type, i, lowerbound);
 958                                 }
 959                                 str = read_str(env);
 960                                 if(strcmp(str, "unknown"))
 961                                 {
 962                                         long upperbound = strtol(str, NULL, 0);
 963                                         set_array_upper_bound_int(type, i, upperbound);
 964                                 }
 965                         }
 966                         set_type_size_bytes(type, size);
 967                         break;
 968                 }
 969
 970                 case tpo_class:
 971                         type = new_type_class(id);
 972                         set_type_size_bytes(type, size);
 973                         break;
 974
 975                 case tpo_method:
 976                 {
 977                         unsigned callingconv = (unsigned) read_long(env);
 978                         unsigned addprops    = (unsigned) read_long(env);
 979                         int nparams          = (int)      read_long(env);
 980                         int nresults         = (int)      read_long(env);
 981
 982                         type = new_type_method(id, nparams, nresults);
 983
 984                         for(i = 0; i < nparams; i++)
 985                         {
 986                                 long     typenr = read_long(env);
 987                                 ir_type *paramtype = get_type(env, typenr);
 988
 989                                 set_method_param_type(type, i, paramtype);
 990                         }
 991                         for(i = 0; i < nresults; i++)
 992                         {
 993                                 long typenr = read_long(env);
 994                                 ir_type *restype = get_type(env, typenr);
 995
 996                                 set_method_res_type(type, i, restype);
 997                         }
 998
 999                         set_method_calling_convention(type, callingconv);
1000                         set_method_additional_properties(type, addprops);
1001                         break;
1002                 }
1003
1004                 case tpo_pointer:
1005                 {
1006                         ir_mode *mode = read_mode(env);
1007                         ir_type *pointsto = get_type(env, read_long(env));
1008                         type = new_type_pointer(id, pointsto, mode);
1009                         break;
1010                 }
1011
1012                 case tpo_primitive:
1013                 {
1014                         ir_mode *mode = read_mode(env);
1015                         type = new_type_primitive(id, mode);
1016                         break;
1017                 }
1018
1019                 case tpo_struct:
1020                         type = new_type_struct(id);
1021                         set_type_size_bytes(type, size);
1022                         break;
1023
1024                 case tpo_union:
1025                         type = new_type_union(id);
1026                         set_type_size_bytes(type, size);
1027                         break;
1028
1029                 case tpo_unknown:
1030                         return;   // ignore unknown type
1031
1032                 default:
1033                         if(typenr != 0)  // ignore global type
1034                                 printf("Unknown type kind: \"%s\" in line %i:%i\n", tpop, env->line, env->col);
1035                         skip_to(env, '\n');
1036                         return;
1037         }
1038
1039         set_type_alignment_bytes(type, align);
1040         set_type_visibility(type, vis);
1041
1042         if(state == layout_fixed)
1043                 ARR_APP1(ir_type *, env->fixedtypes, type);
1044
1045         set_id(env, typenr, type);
1046         printf("Insert type %s %ld\n", name, typenr);
1047 }
1048
1049 /** Reads an entity description and remembers it by its id. */
1050 static void import_entity(io_env_t *env)
1051 {
1052         char          buf[1024], buf2[1024];
1053         long          entnr       = read_long(env);
1054         const char   *name        = read_qstr_to(env, buf, sizeof(buf));
1055         const char   *ld_name     = read_qstr_to(env, buf2, sizeof(buf2));
1056         long          typenr      = read_long(env);
1057         long          ownertypenr = read_long(env);
1058
1059         ir_type   *type      = get_type(env, typenr);
1060         ir_type   *ownertype = !ownertypenr ? get_glob_type() : get_type(env, ownertypenr);
1061         ir_entity *entity    = new_entity(ownertype, new_id_from_str(name), type);
1062
1063         if(*ld_name) set_entity_ld_ident(entity, new_id_from_str(ld_name));
1064         set_entity_offset     (entity, (int) read_long(env));
1065         set_entity_offset_bits_remainder(entity, (unsigned char) read_long(env));
1066         set_entity_allocation (entity, read_allocation(env));
1067         set_entity_visibility (entity, read_visibility(env));
1068         set_entity_variability(entity, read_variability(env));
1069         set_entity_peculiarity(entity, read_peculiarity(env));
1070         set_entity_volatility (entity, read_volatility(env));
1071
1072         if(get_entity_variability(entity) != variability_uninitialized
1073                 && get_entity_visibility(entity) != visibility_external_allocated)
1074         {
1075                 if(is_compound_entity(entity))
1076                 {
1077                         if(!strcmp(read_str_to(env, buf2, sizeof(buf2)), "initializer"))
1078                         {
1079                                 set_entity_initializer(entity, read_initializer(env));
1080                         }
1081                         else
1082                         {
1083                                 int i, n = (int) read_long(env);
1084                                 for(i = 0; i < n; i++)
1085                                 {
1086                                         ir_entity *member = get_entity(env, read_long(env));
1087                                         ir_node   *irn    = get_node_or_dummy(env, read_long(env));
1088                                         add_compound_ent_value(entity, irn, member);
1089                                 }
1090                         }
1091                 }
1092                 else
1093                 {
1094                         ir_node *irn = get_node_or_dummy(env, read_long(env));
1095                         set_atomic_ent_value(entity, irn);
1096                 }
1097         }
1098
1099         set_id(env, entnr, entity);
1100         printf("Insert entity %s %ld\n", name, entnr);
1101 }
1102
1103 /** Parses the whole type graph. */
1104 static int parse_typegraph(io_env_t *env)
1105 {
1106         const char *kind;
1107         lex_state_t oldstate;
1108
1109         EXPECT('{');
1110
1111         save_lex_state(env, &oldstate);
1112
1113         current_ir_graph = get_const_code_irg();
1114
1115         // parse all types first
1116         while(1)
1117         {
1118                 kind = read_str(env);
1119                 if(kind[0] == '}' && !kind[1]) break;
1120
1121                 if(!strcmp(kind, "type"))
1122                         import_type(env);
1123                 else
1124                         skip_to(env, '\n');
1125         }
1126
1127         // now parse rest
1128         restore_lex_state(env, &oldstate);
1129
1130         while(1)
1131         {
1132                 kind = read_str(env);
1133                 if(kind[0] == '}' && !kind[1]) break;
1134
1135                 if(!strcmp(kind, "type"))
1136                         skip_to(env, '\n');
1137                 else if(!strcmp(kind, "entity"))
1138                         import_entity(env);
1139                 else
1140                 {
1141                         printf("Type graph element not supported yet: \"%s\"\n", kind);
1142                         skip_to(env, '\n');
1143                 }
1144         }
1145         return 1;
1146 }
1147
1148 static int read_node_header(io_env_t *env, long *nodenr, long **preds, const char **nodename)
1149 {
1150         int numpreds;
1151         *nodename = read_str(env);
1152         if((*nodename)[0] == '}' && !(*nodename)[1]) return -1;  // end-of-graph
1153
1154         *nodenr = read_long(env);
1155
1156         ARR_RESIZE(ir_node *, *preds, 0);
1157
1158         EXPECT('[');
1159         for(numpreds = 0; !feof(env->file); numpreds++)
1160         {
1161                 char *endptr;
1162                 ARR_APP1(long, *preds, read_long2(env, &endptr));
1163                 if(*endptr == ']') break;
1164         }
1165         return numpreds;
1166 }
1167
1168 /** Parses an IRG. */
1169 static int parse_graph(io_env_t *env, ir_graph *irg)
1170 {
1171         long       *preds = NEW_ARR_F(long, 16);
1172         ir_node   **prednodes = NEW_ARR_F(ir_node *, 16);
1173         int         i, numpreds, ret = 1;
1174         long        nodenr;
1175         const char *nodename;
1176         ir_node    *node, *newnode;
1177
1178         current_ir_graph = irg;
1179
1180         EXPECT('{');
1181
1182         while(1)
1183         {
1184                 numpreds = read_node_header(env, &nodenr, &preds, &nodename);
1185                 if(numpreds == -1) break;  // end-of-graph
1186                 if(!numpreds)
1187                 {
1188                         printf("Node %s %ld is missing predecessors!", nodename, nodenr);
1189                         ret = 0;
1190                         break;
1191                 }
1192
1193                 ARR_RESIZE(ir_node *, prednodes, numpreds);
1194                 for(i = 0; i < numpreds - 1; i++)
1195                         prednodes[i] = get_node_or_dummy(env, preds[i + 1]);
1196
1197                 node = get_node_or_null(env, nodenr);
1198                 newnode = NULL;
1199
1200                 EXPECT('{');
1201
1202                 switch(symbol(nodename, tt_iro))
1203                 {
1204                         case iro_End:
1205                         {
1206                                 ir_node *newendblock = get_node(env, preds[0]);
1207                                 newnode = get_irg_end(current_ir_graph);
1208                                 exchange(get_nodes_block(newnode), newendblock);
1209                                 for(i = 0; i < numpreds - 1; i++)
1210                                         add_irn_n(newnode, prednodes[i]);
1211                                 break;
1212                         }
1213
1214                         case iro_Start:
1215                         {
1216                                 ir_node *newstartblock = get_node(env, preds[0]);
1217                                 newnode = get_irg_start(current_ir_graph);
1218                                 exchange(get_nodes_block(newnode), newstartblock);
1219                                 break;
1220                         }
1221
1222                         case iro_Block:
1223                         {
1224                                 if(preds[0] != nodenr)
1225                                 {
1226                                         printf("Invalid block: preds[0] != nodenr (%ld != %ld)\n",
1227                                                 preds[0], nodenr);
1228                                         ret = 0;
1229                                         goto endloop;
1230                                 }
1231
1232                                 newnode = new_Block(numpreds - 1, prednodes);
1233                                 break;
1234                         }
1235
1236                         case iro_Anchor:
1237                                 newnode = current_ir_graph->anchor;
1238                                 for(i = 0; i < numpreds - 1; i++)
1239                                         set_irn_n(newnode, i, prednodes[i]);
1240                                 set_irn_n(newnode, -1, get_node(env, preds[0]));
1241                                 break;
1242
1243                         case iro_SymConst:
1244                         {
1245                                 long entnr = read_long(env);
1246                                 union symconst_symbol sym;
1247                                 sym.entity_p = get_entity(env, entnr);
1248                                 newnode = new_SymConst(mode_P, sym, symconst_addr_ent);
1249                                 break;
1250                         }
1251
1252                         #include "gen_irio_import.inl"
1253
1254                         default:
1255                                 goto notsupported;
1256                 }
1257
1258                 EXPECT('}');
1259
1260                 if(!newnode)
1261                 {
1262 notsupported:
1263                         panic("Node type not supported yet: %s in line %i:%i\n", nodename, env->line, env->col);
1264                 }
1265
1266                 if(node)
1267                         exchange(node, newnode);
1268                 /* Always update hash entry to avoid more uses of id nodes */
1269                 set_id(env, nodenr, newnode);
1270                 //printf("Insert %s %ld\n", nodename, nodenr);
1271         }
1272
1273 endloop:
1274         DEL_ARR_F(preds);
1275         DEL_ARR_F(prednodes);
1276
1277         return ret;
1278 }
1279
1280 /** Imports an previously exported textual representation of an (maybe partial) irp */
1281 void ir_import(const char *filename)
1282 {
1283         int oldoptimize = get_optimize();
1284         firm_verification_t oldver = get_node_verification_mode();
1285         io_env_t ioenv;
1286         io_env_t *env = &ioenv;
1287         int i, n;
1288
1289         symtbl_init();
1290
1291         memset(env, 0, sizeof(*env));
1292         env->idset = new_set(id_cmp, 128);
1293         env->fixedtypes = NEW_ARR_F(ir_type *, 0);
1294
1295         env->file = fopen(filename, "rt");
1296         if(!env->file)
1297         {
1298                 perror(filename);
1299                 exit(1);
1300         }
1301
1302         set_optimize(0);
1303         do_node_verification(FIRM_VERIFICATION_OFF);
1304
1305         while(1)
1306         {
1307                 const char *str = read_str(env);
1308                 if(!*str) break;
1309                 if(!strcmp(str, "typegraph"))
1310                 {
1311                         if(!parse_typegraph(env)) break;
1312                 }
1313                 else if(!strcmp(str, "irg"))
1314                 {
1315                         ir_graph *irg = new_ir_graph(get_entity(env, read_long(env)), 0);
1316                         if(!parse_graph(env, irg)) break;
1317                 }
1318                 else if(!strcmp(str, "constirg"))
1319                 {
1320                         if(!parse_graph(env, get_const_code_irg())) break;
1321                 }
1322         }
1323
1324         n = ARR_LEN(env->fixedtypes);
1325         for(i = 0; i < n; i++)
1326                 set_type_state(env->fixedtypes[i], layout_fixed);
1327
1328         DEL_ARR_F(env->fixedtypes);
1329
1330         del_set(env->idset);
1331
1332         irp_finalize_cons();
1333
1334         do_node_verification(oldver);
1335         set_optimize(oldoptimize);
1336
1337         fclose(env->file);
1338 }