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

   1 /*
   2  * Copyright (C) 1995-2011 University of Karlsruhe.  All right reserved.
   3  *
   4  * This file is part of libFirm.
   5  *
   6  * This file may be distributed and/or modified under the terms of the
   7  * GNU General Public License version 2 as published by the Free Software
   8  * Foundation and appearing in the file LICENSE.GPL included in the
   9  * packaging of this file.
  10  *
  11  * Licensees holding valid libFirm Professional Edition licenses may use
  12  * this file in accordance with the libFirm Commercial License.
  13  * Agreement provided with the Software.
  14  *
  15  * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  16  * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17  * PURPOSE.
  18  */
  19
  20 /**
  21  * @file
  22  * @brief   Write textual representation of firm to file.
  23  * @author  Moritz Kroll
  24  * @version $Id$
  25  */
  26 #include "config.h"
  27
  28 #include <string.h>
  29 #include <ctype.h>
  30 #include <stdbool.h>
  31 #include <stdarg.h>
  32
  33 #include "irio.h"
  34
  35 #include "irnode_t.h"
  36 #include "irprog.h"
  37 #include "irgraph_t.h"
  38 #include "irprintf.h"
  39 #include "ircons.h"
  40 #include "irgmod.h"
  41 #include "irflag_t.h"
  42 #include "irgwalk.h"
  43 #include "tv.h"
  44 #include "array.h"
  45 #include "error.h"
  46 #include "typerep.h"
  47 #include "adt/set.h"
  48 #include "adt/obst.h"
  49
  50 #define SYMERROR ((unsigned) ~0)
  51
  52 typedef struct io_env_t
  53 {
  54         int c;                /**< currently read char */
  55         FILE *file;
  56         set *idset;           /**< id_entry set, which maps from file ids to new Firm elements */
  57         int ignoreblocks;
  58         const char *inputname;
  59         int line;
  60         ir_type **fixedtypes;
  61         struct obstack obst;
  62         ir_graph *irg;
  63 } io_env_t;
  64
  65 typedef enum typetag_t
  66 {
  67         tt_align,
  68         tt_allocation,
  69         tt_builtin,
  70         tt_cond_jmp_predicate,
  71         tt_initializer,
  72         tt_iro,
  73         tt_keyword,
  74         tt_mode_sort,
  75         tt_mode_arithmetic,
  76         tt_pin_state,
  77         tt_tpo,
  78         tt_type_state,
  79         tt_volatility,
  80         tt_linkage,
  81         tt_segment,
  82         tt_visibility
  83 } typetag_t;
  84
  85 typedef enum keyword_t
  86 {
  87         kw_constirg,
  88         kw_entity,
  89         kw_irg,
  90         kw_mode,
  91         kw_modes,
  92         kw_type,
  93         kw_typegraph,
  94         kw_program,
  95         kw_segment_type
  96 } keyword_t;
  97
  98 typedef struct symbol_t
  99 {
 100         const char *str;      /**< The name of this symbol. */
 101         typetag_t   typetag;  /**< The type tag of this symbol. */
 102         unsigned    code;     /**< The value of this symbol. */
 103 } symbol_t;
 104
 105 typedef struct id_entry
 106 {
 107         long id;
 108         void *elem;
 109 } id_entry;
 110
 111 /** The symbol table, a set of symbol_t elements. */
 112 static set *symtbl;
 113
 114 /**
 115  * Compare two symbol table entries.
 116  */
 117 static int symbol_cmp(const void *elt, const void *key, size_t size)
 118 {
 119         int res;
 120         const symbol_t *entry = (const symbol_t *) elt;
 121         const symbol_t *keyentry = (const symbol_t *) key;
 122         (void) size;
 123         res = entry->typetag - keyentry->typetag;
 124         if (res) return res;
 125         return strcmp(entry->str, keyentry->str);
 126 }
 127
 128 static int id_cmp(const void *elt, const void *key, size_t size)
 129 {
 130         const id_entry *entry = (const id_entry *) elt;
 131         const id_entry *keyentry = (const id_entry *) key;
 132         (void) size;
 133         return entry->id - keyentry->id;
 134 }
 135
 136 static void __attribute__((format(printf, 2, 3)))
 137 parse_error(io_env_t *env, const char *fmt, ...)
 138 {
 139         va_list ap;
 140         int     line = env->line;
 141
 142         /* workaround read_c "feature" that a '\n' triggers the line++
 143          * instead of the character after the '\n' */
 144         if (env->c == '\n') {
 145                 line--;
 146         }
 147
 148         fprintf(stderr, "%s:%d: error ", env->inputname, line);
 149
 150         va_start(ap, fmt);
 151         vfprintf(stderr, fmt, ap);
 152         va_end(ap);
 153 }
 154
 155 /** Initializes the symbol table. May be called more than once without problems. */
 156 static void symtbl_init(void)
 157 {
 158         symbol_t key;
 159
 160         /* Only initialize once */
 161         if (symtbl != NULL)
 162                 return;
 163
 164         symtbl = new_set(symbol_cmp, 256);
 165
 166 #define INSERT(tt, s, cod)                                       \
 167         key.str = (s);                                               \
 168         key.typetag = (tt);                                          \
 169         key.code = (cod);                                            \
 170         set_insert(symtbl, &key, sizeof(key), firm_fnv_hash_str(s) + tt * 17)
 171
 172 #define INSERTENUM(tt, e) INSERT(tt, #e, e)
 173 #define INSERTKEYWORD(k) INSERT(tt_keyword, #k, kw_##k)
 174
 175         INSERT(tt_tpo, "array", tpo_array);
 176         INSERT(tt_tpo, "class", tpo_class);
 177         INSERT(tt_tpo, "method", tpo_method);
 178         INSERT(tt_tpo, "pointer", tpo_pointer);
 179         INSERT(tt_tpo, "primitive", tpo_primitive);
 180         INSERT(tt_tpo, "struct", tpo_struct);
 181         INSERT(tt_tpo, "union", tpo_union);
 182         INSERT(tt_tpo, "Unknown", tpo_unknown);
 183
 184         INSERT(tt_mode_sort, "auxiliary", irms_auxiliary);
 185         INSERT(tt_mode_sort, "control_flow", irms_control_flow);
 186         INSERT(tt_mode_sort, "memory", irms_memory);
 187         INSERT(tt_mode_sort, "internal_boolean", irms_internal_boolean);
 188         INSERT(tt_mode_sort, "reference", irms_reference);
 189         INSERT(tt_mode_sort, "int_number", irms_int_number);
 190         INSERT(tt_mode_sort, "float_number", irms_float_number);
 191
 192         INSERT(tt_segment, "global", IR_SEGMENT_GLOBAL);
 193         INSERT(tt_segment, "thread_local", IR_SEGMENT_THREAD_LOCAL);
 194         INSERT(tt_segment, "constructors", IR_SEGMENT_CONSTRUCTORS);
 195         INSERT(tt_segment, "destructors", IR_SEGMENT_DESTRUCTORS);
 196
 197         INSERT(tt_linkage, "constant", IR_LINKAGE_CONSTANT);
 198         INSERT(tt_linkage, "weak", IR_LINKAGE_WEAK);
 199         INSERT(tt_linkage, "garbage_collect", IR_LINKAGE_GARBAGE_COLLECT);
 200         INSERT(tt_linkage, "merge", IR_LINKAGE_MERGE);
 201         INSERT(tt_linkage, "hidden_user", IR_LINKAGE_HIDDEN_USER);
 202
 203         INSERT(tt_visibility, "local", ir_visibility_local);
 204         INSERT(tt_visibility, "external", ir_visibility_external);
 205         INSERT(tt_visibility, "default", ir_visibility_default);
 206         INSERT(tt_visibility, "private", ir_visibility_private);
 207
 208         INSERTKEYWORD(constirg);
 209         INSERTKEYWORD(entity);
 210         INSERTKEYWORD(irg);
 211         INSERTKEYWORD(mode);
 212         INSERTKEYWORD(modes);
 213         INSERTKEYWORD(type);
 214         INSERTKEYWORD(typegraph);
 215         INSERTKEYWORD(program);
 216         INSERTKEYWORD(segment_type);
 217
 218 #include "gen_irio_lex.inl"
 219
 220         INSERTENUM(tt_align, align_non_aligned);
 221         INSERTENUM(tt_align, align_is_aligned);
 222
 223         INSERTENUM(tt_builtin, ir_bk_trap);
 224         INSERTENUM(tt_builtin, ir_bk_debugbreak);
 225         INSERTENUM(tt_builtin, ir_bk_return_address);
 226         INSERTENUM(tt_builtin, ir_bk_frame_address);
 227         INSERTENUM(tt_builtin, ir_bk_prefetch);
 228         INSERTENUM(tt_builtin, ir_bk_ffs);
 229         INSERTENUM(tt_builtin, ir_bk_clz);
 230         INSERTENUM(tt_builtin, ir_bk_ctz);
 231         INSERTENUM(tt_builtin, ir_bk_popcount);
 232         INSERTENUM(tt_builtin, ir_bk_parity);
 233         INSERTENUM(tt_builtin, ir_bk_bswap);
 234         INSERTENUM(tt_builtin, ir_bk_inport);
 235         INSERTENUM(tt_builtin, ir_bk_outport);
 236         INSERTENUM(tt_builtin, ir_bk_inner_trampoline);
 237
 238         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_NONE);
 239         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_TRUE);
 240         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_FALSE);
 241
 242         INSERTENUM(tt_initializer, IR_INITIALIZER_CONST);
 243         INSERTENUM(tt_initializer, IR_INITIALIZER_TARVAL);
 244         INSERTENUM(tt_initializer, IR_INITIALIZER_NULL);
 245         INSERTENUM(tt_initializer, IR_INITIALIZER_COMPOUND);
 246
 247         INSERTENUM(tt_mode_arithmetic, irma_uninitialized);
 248         INSERTENUM(tt_mode_arithmetic, irma_none);
 249         INSERTENUM(tt_mode_arithmetic, irma_twos_complement);
 250         INSERTENUM(tt_mode_arithmetic, irma_ones_complement);
 251         INSERTENUM(tt_mode_arithmetic, irma_int_BCD);
 252         INSERTENUM(tt_mode_arithmetic, irma_ieee754);
 253         INSERTENUM(tt_mode_arithmetic, irma_float_BCD);
 254
 255         INSERTENUM(tt_pin_state, op_pin_state_floats);
 256         INSERTENUM(tt_pin_state, op_pin_state_pinned);
 257         INSERTENUM(tt_pin_state, op_pin_state_exc_pinned);
 258         INSERTENUM(tt_pin_state, op_pin_state_mem_pinned);
 259
 260         INSERTENUM(tt_type_state, layout_undefined);
 261         INSERTENUM(tt_type_state, layout_fixed);
 262
 263         INSERTENUM(tt_volatility, volatility_non_volatile);
 264         INSERTENUM(tt_volatility, volatility_is_volatile);
 265
 266 #undef INSERTKEYWORD
 267 #undef INSERTENUM
 268 #undef INSERT
 269 }
 270
 271 static const char *get_segment_name(ir_segment_t segment)
 272 {
 273         switch (segment) {
 274         case IR_SEGMENT_GLOBAL:       return "global";
 275         case IR_SEGMENT_THREAD_LOCAL: return "thread_local";
 276         case IR_SEGMENT_CONSTRUCTORS: return "constructors";
 277         case IR_SEGMENT_DESTRUCTORS:  return "destructors";
 278         }
 279         return "INVALID_SEGMENT";
 280 }
 281
 282 static const char *get_visibility_name(ir_visibility visibility)
 283 {
 284         switch (visibility) {
 285         case ir_visibility_local:    return "local";
 286         case ir_visibility_external: return "external";
 287         case ir_visibility_default:  return "default";
 288         case ir_visibility_private:  return "private";
 289         }
 290         return "INVALID_VISIBILITY";
 291 }
 292
 293 /** Returns the according symbol value for the given string and tag, or SYMERROR if none was found. */
 294 static unsigned symbol(const char *str, typetag_t typetag)
 295 {
 296         symbol_t key, *entry;
 297
 298         key.str = str;
 299         key.typetag = typetag;
 300
 301         entry = (symbol_t*)set_find(symtbl, &key, sizeof(key), firm_fnv_hash_str(str) + typetag * 17);
 302         return entry ? entry->code : SYMERROR;
 303 }
 304
 305 static void *get_id(io_env_t *env, long id)
 306 {
 307         id_entry key, *entry;
 308         key.id = id;
 309
 310         entry = (id_entry*)set_find(env->idset, &key, sizeof(key), (unsigned) id);
 311         return entry ? entry->elem : NULL;
 312 }
 313
 314 static void set_id(io_env_t *env, long id, void *elem)
 315 {
 316         id_entry key;
 317         key.id = id;
 318         key.elem = elem;
 319         set_insert(env->idset, &key, sizeof(key), (unsigned) id);
 320 }
 321
 322 static void write_long(io_env_t *env, long value)
 323 {
 324         fprintf(env->file, "%ld ", value);
 325 }
 326
 327 static void write_int(io_env_t *env, int value)
 328 {
 329         fprintf(env->file, "%d ", value);
 330 }
 331
 332 static void write_unsigned(io_env_t *env, unsigned value)
 333 {
 334         fprintf(env->file, "%u ", value);
 335 }
 336
 337 static void write_entity_ref(io_env_t *env, ir_entity *entity)
 338 {
 339         write_long(env, get_entity_nr(entity));
 340 }
 341
 342 static void write_type_ref(io_env_t *env, ir_type *type)
 343 {
 344         write_long(env, get_type_nr(type));
 345 }
 346
 347 static void write_string(io_env_t *env, const char *string)
 348 {
 349         const char *c;
 350         fputc('"', env->file);
 351         for (c = string; *c != '\0'; ++c) {
 352                 switch (*c) {
 353                 case '\n':
 354                         fputc('\\', env->file);
 355                         fputc('n', env->file);
 356                         break;
 357                 case '"':
 358                 case '\\':
 359                         fputc('\\', env->file);
 360                         /* FALLTHROUGH */
 361                 default:
 362                         fputc(*c, env->file);
 363                         break;
 364                 }
 365         }
 366         fputc('"', env->file);
 367 }
 368
 369 static void write_ident(io_env_t *env, ident *id)
 370 {
 371         write_string(env, get_id_str(id));
 372         fputc(' ', env->file);
 373 }
 374
 375 static void write_ident_null(io_env_t *env, ident *id)
 376 {
 377         if (id == NULL) {
 378                 fputs("NULL ", env->file);
 379         } else {
 380                 write_ident(env, id);
 381         }
 382 }
 383
 384 static void write_mode(io_env_t *env, ir_mode *mode)
 385 {
 386         fputs(get_mode_name(mode), env->file);
 387         fputc(' ', env->file);
 388 }
 389
 390 static void write_tarval(io_env_t *env, ir_tarval *tv)
 391 {
 392         char buf[1024];
 393         write_mode(env, get_tarval_mode(tv));
 394         tarval_snprintf(buf, sizeof(buf), tv);
 395         fputs(buf, env->file);
 396         fputc(' ', env->file);
 397 }
 398
 399 static void write_align(io_env_t *env, ir_align align)
 400 {
 401         fputs(get_align_name(align), env->file);
 402         fputc(' ', env->file);
 403 }
 404
 405 static void write_builtin_kind(io_env_t *env, ir_node *irn)
 406 {
 407         fputs(get_builtin_kind_name(get_Builtin_kind(irn)), env->file);
 408         fputc(' ', env->file);
 409 }
 410
 411 static void write_cond_jmp_predicate(io_env_t *env, ir_node *irn)
 412 {
 413         fputs(get_cond_jmp_predicate_name(get_Cond_jmp_pred(irn)), env->file);
 414         fputc(' ', env->file);
 415 }
 416
 417 static void write_list_begin(io_env_t *env)
 418 {
 419         fputs("[", env->file);
 420 }
 421
 422 static void write_list_end(io_env_t *env)
 423 {
 424         fputs("] ", env->file);
 425 }
 426
 427 static void write_initializer(io_env_t *env, ir_initializer_t *ini)
 428 {
 429         FILE *f = env->file;
 430         ir_initializer_kind_t ini_kind = get_initializer_kind(ini);
 431
 432         fputs(get_initializer_kind_name(ini_kind), f);
 433         fputc(' ', f);
 434
 435         switch (ini_kind) {
 436         case IR_INITIALIZER_CONST:
 437                 write_long(env, get_irn_node_nr(get_initializer_const_value(ini)));
 438                 break;
 439
 440         case IR_INITIALIZER_TARVAL:
 441                 write_tarval(env, get_initializer_tarval_value(ini));
 442                 break;
 443
 444         case IR_INITIALIZER_NULL:
 445                 break;
 446
 447         case IR_INITIALIZER_COMPOUND: {
 448                 size_t i, n = get_initializer_compound_n_entries(ini);
 449                 ir_fprintf(f, "%zu ", n);
 450                 for (i = 0; i < n; ++i)
 451                         write_initializer(env, get_initializer_compound_value(ini, i));
 452                 break;
 453         }
 454
 455         default:
 456                 panic("Unknown initializer kind");
 457         }
 458 }
 459
 460 static void write_pin_state(io_env_t *env, ir_node *irn)
 461 {
 462         fputs(get_op_pin_state_name(get_irn_pinned(irn)), env->file);
 463         fputc(' ', env->file);
 464 }
 465
 466 static void write_volatility(io_env_t *env, ir_volatility vol)
 467 {
 468         fputs(get_volatility_name(vol), env->file);
 469         fputc(' ', env->file);
 470 }
 471
 472 static void export_type_common(io_env_t *env, ir_type *tp)
 473 {
 474         fprintf(env->file, "\ttype %ld %s %u %u %s %u ",
 475                 get_type_nr(tp),
 476                 get_type_tpop_name(tp),
 477                 get_type_size_bytes(tp),
 478                 get_type_alignment_bytes(tp),
 479                 get_type_state_name(get_type_state(tp)),
 480                 tp->flags);
 481 }
 482
 483 static void export_type_pre(io_env_t *env, ir_type *tp)
 484 {
 485         FILE *f = env->file;
 486
 487         /* skip types to be handled by post walker */
 488         switch (get_type_tpop_code(tp)) {
 489         case tpo_array:
 490         case tpo_method:
 491         case tpo_pointer:
 492                 return;
 493         default:
 494                 break;
 495         }
 496
 497         export_type_common(env, tp);
 498
 499         switch (get_type_tpop_code(tp)) {
 500         case tpo_uninitialized:
 501                 panic("invalid type found");
 502
 503         case tpo_class:
 504                 write_ident_null(env, get_compound_ident(tp));
 505                 break;
 506
 507         case tpo_primitive:
 508                 write_mode(env, get_type_mode(tp));
 509                 break;
 510
 511         case tpo_union:
 512         case tpo_struct:
 513         case tpo_enumeration:
 514                 write_ident_null(env, get_compound_ident(tp));
 515                 break;
 516
 517         case tpo_array:
 518         case tpo_method:
 519         case tpo_pointer:
 520         case tpo_code:
 521         case tpo_none:
 522         case tpo_unknown:
 523                 break;
 524         }
 525         fputc('\n', f);
 526 }
 527
 528 static void export_type_post(io_env_t *env, ir_type *tp)
 529 {
 530         FILE *f = env->file;
 531         size_t i;
 532
 533         /* skip types already handled by pre walker */
 534         switch (get_type_tpop_code(tp)) {
 535         case tpo_class:
 536         case tpo_primitive:
 537         case tpo_struct:
 538         case tpo_union:
 539         case tpo_unknown:
 540         case tpo_uninitialized:
 541         case tpo_code:
 542         case tpo_none:
 543                 return;
 544         case tpo_array:
 545         case tpo_method:
 546         case tpo_pointer:
 547         case tpo_enumeration:
 548                 break;
 549         }
 550
 551         export_type_common(env, tp);
 552
 553         switch (get_type_tpop_code(tp)) {
 554         case tpo_array: {
 555                 size_t n = get_array_n_dimensions(tp);
 556                 ir_fprintf(f, "%zu %ld ", n, get_type_nr(get_array_element_type(tp)));
 557                 for (i = 0; i < n; i++) {
 558                         ir_node *lower = get_array_lower_bound(tp, i);
 559                         ir_node *upper = get_array_upper_bound(tp, i);
 560
 561                         if (is_Const(lower))
 562                                 write_long(env, get_tarval_long(get_Const_tarval(lower)));
 563                         else
 564                                 panic("Lower array bound is not constant");
 565
 566                         if (is_Const(upper))
 567                                 write_long(env, get_tarval_long(get_Const_tarval(upper)));
 568                         else if (is_Unknown(upper))
 569                                 fputs("unknown ", f);
 570                         else
 571                                 panic("Upper array bound is not constant");
 572                 }
 573                 break;
 574         }
 575
 576         case tpo_method: {
 577                 size_t nparams  = get_method_n_params(tp);
 578                 size_t nresults = get_method_n_ress(tp);
 579                 ir_fprintf(f, "%u %u %zu %zu ", get_method_calling_convention(tp),
 580                         get_method_additional_properties(tp), nparams, nresults);
 581                 for (i = 0; i < nparams; i++)
 582                         write_long(env, get_type_nr(get_method_param_type(tp, i)));
 583                 for (i = 0; i < nresults; i++)
 584                         write_long(env, get_type_nr(get_method_res_type(tp, i)));
 585                 ir_fprintf(f, "%u ", get_method_variadicity(tp));
 586                 break;
 587         }
 588
 589         case tpo_pointer:
 590                 write_mode(env, get_type_mode(tp));
 591                 write_long(env, get_type_nr(get_pointer_points_to_type(tp)));
 592                 break;
 593
 594         case tpo_enumeration:
 595                 fprintf(stderr, "Enumeration type not handled yet by exporter\n");
 596                 break;
 597
 598         default:
 599                 printf("export_type: Unknown type code \"%s\".\n",
 600                        get_type_tpop_name(tp));
 601                 break;
 602         }
 603         fputc('\n', f);
 604 }
 605
 606 static void export_entity(io_env_t *env, ir_entity *ent)
 607 {
 608         FILE          *file       = env->file;
 609         ir_type       *owner      = get_entity_owner(ent);
 610         ir_visibility  visibility = get_entity_visibility(ent);
 611         ir_linkage     linkage    = get_entity_linkage(ent);
 612
 613         /* we don't dump array_element_ent entities. They're a strange concept
 614          * and lead to cycles in type_graph.
 615          */
 616         if (is_Array_type(owner))
 617                 return;
 618
 619         fprintf(env->file, "\tentity ");
 620         write_long(env, get_entity_nr(ent));
 621         write_ident_null(env, get_entity_ident(ent));
 622         if (!entity_has_ld_ident(ent)) {
 623                 write_ident_null(env, NULL);
 624         } else {
 625                 write_ident_null(env, get_entity_ld_ident(ent));
 626         }
 627
 628         /* visibility + linkage */
 629         if (visibility != ir_visibility_default) {
 630                 fprintf(file, "%s ", get_visibility_name(visibility));
 631         }
 632         if (linkage & IR_LINKAGE_CONSTANT)
 633                 fputs("constant ", file);
 634         if (linkage & IR_LINKAGE_WEAK)
 635                 fputs("weak ", file);
 636         if (linkage & IR_LINKAGE_GARBAGE_COLLECT)
 637                 fputs("garbage_collect ", file);
 638         if (linkage & IR_LINKAGE_MERGE)
 639                 fputs("merge ", file);
 640         if (linkage & IR_LINKAGE_HIDDEN_USER)
 641                 fputs("hidden_user ", file);
 642
 643         fprintf(file, "%ld %ld %d %u %d %s ",
 644                         get_type_nr(get_entity_type(ent)),
 645                         get_type_nr(owner),
 646                         get_entity_offset(ent),
 647                         (unsigned) get_entity_offset_bits_remainder(ent),
 648                         is_entity_compiler_generated(ent),
 649                         get_volatility_name(get_entity_volatility(ent)));
 650
 651         if (ent->initializer != NULL) {
 652                 fputs("initializer ", env->file);
 653                 write_initializer(env, get_entity_initializer(ent));
 654         } else if (entity_has_compound_ent_values(ent)) {
 655                 size_t i, n = get_compound_ent_n_values(ent);
 656                 fputs("compoundgraph ", env->file);
 657                 ir_fprintf(env->file, "%zu ", n);
 658                 for (i = 0; i < n; i++) {
 659                         ir_entity *member = get_compound_ent_value_member(ent, i);
 660                         ir_node   *irn    = get_compound_ent_value(ent, i);
 661                         fprintf(env->file, "%ld %ld ", get_entity_nr(member), get_irn_node_nr(irn));
 662                 }
 663         } else {
 664                 fputs("none", env->file);
 665         }
 666
 667         fputc('\n', env->file);
 668 }
 669
 670 static void export_type_or_ent_pre(type_or_ent tore, void *ctx)
 671 {
 672         io_env_t *env = (io_env_t *) ctx;
 673         if (get_kind(tore.typ) == k_type)
 674                 export_type_pre(env, tore.typ);
 675 }
 676
 677 static void export_type_or_ent_post(type_or_ent tore, void *ctx)
 678 {
 679         io_env_t *env = (io_env_t *) ctx;
 680
 681         switch (get_kind(tore.ent)) {
 682         case k_entity:
 683                 export_entity(env, tore.ent);
 684                 break;
 685
 686         case k_type:
 687                 export_type_post(env, tore.typ);
 688                 break;
 689
 690         default:
 691                 panic("export_type_or_ent_post: Unknown type or entity.");
 692         }
 693 }
 694
 695 static void export_ASM(io_env_t *env, ir_node *node)
 696 {
 697         ir_asm_constraint *input_constraints    = get_ASM_input_constraints(node);
 698         ir_asm_constraint *output_constraints   = get_ASM_output_constraints(node);
 699         ident            **clobbers             = get_ASM_clobbers(node);
 700         int                n_input_constraints  = get_ASM_n_input_constraints(node);
 701         int                n_output_constraints = get_ASM_n_output_constraints(node);
 702         int                n_clobbers           = get_ASM_n_clobbers(node);
 703         int i;
 704
 705         write_ident(env, get_ASM_text(node));
 706         write_list_begin(env);
 707         for (i = 0; i < n_input_constraints; ++i) {
 708                 const ir_asm_constraint *constraint = &input_constraints[i];
 709                 write_unsigned(env, constraint->pos);
 710                 write_ident(env, constraint->constraint);
 711                 write_mode(env, constraint->mode);
 712         }
 713         write_list_end(env);
 714
 715         write_list_begin(env);
 716         for (i = 0; i < n_output_constraints; ++i) {
 717                 const ir_asm_constraint *constraint = &output_constraints[i];
 718                 write_unsigned(env, constraint->pos);
 719                 write_ident(env, constraint->constraint);
 720                 write_mode(env, constraint->mode);
 721         }
 722         write_list_end(env);
 723
 724         write_list_begin(env);
 725         for (i = 0; i < n_clobbers; ++i) {
 726                 ident *clobber = clobbers[i];
 727                 write_ident(env, clobber);
 728         }
 729         write_list_end(env);
 730 }
 731
 732 /**
 733  * Walker: exports every node.
 734  */
 735 static void export_node(ir_node *irn, void *ctx)
 736 {
 737         io_env_t *env = (io_env_t *) ctx;
 738         int i, n;
 739         unsigned opcode = get_irn_opcode(irn);
 740
 741         if (env->ignoreblocks && opcode == iro_Block)
 742                 return;
 743
 744         fprintf(env->file, "\t%s ", get_irn_opname(irn));
 745         write_long(env, get_irn_node_nr(irn));
 746
 747         write_list_begin(env);
 748         n = get_irn_arity(irn);
 749         if (!is_Block(irn)) {
 750                 ir_node *block = get_nodes_block(irn);
 751                 write_long(env, get_irn_node_nr(block));
 752         }
 753
 754         for (i = 0; i < n; i++) {
 755                 ir_node *pred = get_irn_n(irn, i);
 756                 if (pred == NULL) {
 757                         /* Anchor node may have NULL predecessors */
 758                         assert(is_Anchor(irn));
 759                         fputs("-1 ", env->file);
 760                 } else {
 761                         write_long(env, get_irn_node_nr(pred));
 762                 }
 763         }
 764         write_list_end(env);
 765
 766         fputs("{ ", env->file);
 767
 768         switch (opcode) {
 769         case iro_Start:
 770         case iro_End:
 771         case iro_Block:
 772         case iro_Anchor:
 773                 break;
 774         case iro_SymConst:
 775                 /* TODO: only symconst_addr_ent implemented yet */
 776                 assert(get_SymConst_kind(irn) == symconst_addr_ent);
 777                 fprintf(env->file, "%ld ", get_entity_nr(get_SymConst_entity(irn)));
 778                 break;
 779         case iro_Proj:
 780                 write_mode(env, get_irn_mode(irn));
 781                 fprintf(env->file, "%ld ", get_Proj_proj(irn));
 782                 break;
 783         case iro_ASM:
 784                 export_ASM(env, irn);
 785                 break;
 786 #include "gen_irio_export.inl"
 787         default:
 788                 panic("no export code for node %+F\n", irn);
 789         }
 790         fputs("}\n", env->file);
 791 }
 792
 793 static const char *get_mode_sort_name(ir_mode_sort sort)
 794 {
 795         switch (sort) {
 796         case irms_auxiliary:        return "auxiliary";
 797         case irms_control_flow:     return "control_flow";
 798         case irms_memory:           return "memory";
 799         case irms_internal_boolean: return "internal_boolean";
 800         case irms_reference:        return "reference";
 801         case irms_int_number:       return "int_number";
 802         case irms_float_number:     return "float_number";
 803         }
 804         panic("invalid mode sort found");
 805 }
 806
 807 static void export_modes(io_env_t *env)
 808 {
 809         size_t i, n_modes = get_irp_n_modes();
 810
 811         fputs("modes {\n", env->file);
 812
 813         for (i = 0; i < n_modes; i++) {
 814                 ir_mode *mode = get_irp_mode(i);
 815                 switch (get_mode_sort(mode)) {
 816                 case irms_auxiliary:
 817                 case irms_control_flow:
 818                 case irms_memory:
 819                 case irms_internal_boolean:
 820                         /* skip "internal" modes, which may not be user defined */
 821                         continue;
 822                 default:
 823                         break;
 824                 }
 825
 826                 fprintf(env->file, "\tmode ");
 827                 write_string(env, get_mode_name(mode));
 828                 fprintf(env->file, "%s %u %d %s %u %u ",
 829                         get_mode_sort_name(get_mode_sort(mode)),
 830                         get_mode_size_bits(mode), get_mode_sign(mode),
 831                         get_mode_arithmetic_name(get_mode_arithmetic(mode)),
 832                         get_mode_modulo_shift(mode),
 833                         get_mode_n_vector_elems(mode));
 834                 if (mode_is_reference(mode)) {
 835                         write_mode(env, get_reference_mode_signed_eq(mode));
 836                         write_mode(env, get_reference_mode_unsigned_eq(mode));
 837                 }
 838                 fputc('\n', env->file);
 839         }
 840
 841         fputs("}\n", env->file);
 842 }
 843
 844 static void export_program(io_env_t *env)
 845 {
 846         FILE         *f = env->file;
 847         ir_segment_t  s;
 848
 849         fputs("\nprogram {\n", f);
 850         if (irp_prog_name_is_set()) {
 851                 fprintf(f, "\tname ");
 852                 write_string(env, get_irp_name());
 853                 fputc('\n', f);
 854         }
 855
 856         for (s = IR_SEGMENT_FIRST; s <= IR_SEGMENT_LAST; ++s) {
 857                 ir_type *segment_type = get_segment_type(s);
 858                 fprintf(f, "\tsegment_type %s ", get_segment_name(s));
 859                 if (segment_type == NULL) {
 860                         fputs(" NULL\n", f);
 861                 } else {
 862                         write_long(env, get_type_nr(segment_type));
 863                         fputc('\n', f);
 864                 }
 865         }
 866         fputs("}\n", f);
 867 }
 868
 869 void ir_export(const char *filename)
 870 {
 871         FILE *file = fopen(filename, "wt");
 872         if (file == NULL) {
 873                 perror(filename);
 874                 return;
 875         }
 876
 877         ir_export_file(file, filename);
 878         fclose(file);
 879 }
 880
 881 /* Exports the whole irp to the given file in a textual form. */
 882 void ir_export_file(FILE *file, const char *outputname)
 883 {
 884         io_env_t env;
 885         size_t i, n_irgs = get_irp_n_irgs();
 886
 887         (void) outputname;
 888         env.file = file;
 889
 890         export_modes(&env);
 891
 892         fputs("\ntypegraph {\n", env.file);
 893         type_walk_prog(export_type_or_ent_pre, export_type_or_ent_post, &env);
 894         fputs("}\n", env.file);
 895
 896         for (i = 0; i < n_irgs; i++) {
 897                 ir_graph *irg       = get_irp_irg(i);
 898
 899                 fprintf(env.file, "\nirg %ld %ld {\n",
 900                         get_entity_nr(get_irg_entity(irg)),
 901                         get_type_nr(get_irg_frame_type(irg)));
 902
 903                 env.ignoreblocks = 0;
 904                 irg_block_walk_graph(irg, NULL, export_node, &env);
 905
 906                 env.ignoreblocks = 1;
 907                 irg_walk_anchors(irg, NULL, export_node, &env);
 908
 909                 fputs("}\n", env.file);
 910         }
 911
 912         fprintf(env.file, "\nconstirg %ld {\n", get_irn_node_nr(get_const_code_irg()->current_block));
 913
 914         walk_const_code(NULL, export_node, &env);
 915         fputs("}\n", env.file);
 916
 917         export_program(&env);
 918 }
 919
 920 /* Exports the given irg to the given file. */
 921 void ir_export_irg(ir_graph *irg, FILE *file, const char *outputname)
 922 {
 923         io_env_t env;
 924
 925         (void) outputname;
 926         env.file = file;
 927
 928         export_modes(&env);
 929
 930         fputs("typegraph {\n", env.file);
 931
 932         type_walk_irg(irg, export_type_or_ent_pre, export_type_or_ent_post, &env);
 933
 934         fprintf(env.file, "}\n\nirg %ld {\n", get_entity_nr(get_irg_entity(irg)));
 935
 936         env.ignoreblocks = 0;
 937         irg_block_walk_graph(irg, NULL, export_node, &env);
 938
 939         env.ignoreblocks = 1;
 940         irg_walk_anchors(irg, NULL, export_node, &env);
 941
 942         /* TODO: Only output needed constants */
 943         fprintf(env.file, "}\n\nconstirg %ld {\n", get_irn_node_nr(get_const_code_irg()->current_block));
 944         walk_const_code(NULL, export_node, &env);
 945         fputs("}\n", env.file);
 946 }
 947
 948 static void read_c(io_env_t *env)
 949 {
 950         int c = fgetc(env->file);
 951         env->c = c;
 952         if (c == '\n')
 953                 env->line++;
 954 }
 955
 956 /** Returns the first non-whitespace character or EOF. **/
 957 static void skip_ws(io_env_t *env)
 958 {
 959         while (true) {
 960                 switch (env->c) {
 961                 case ' ':
 962                 case '\t':
 963                 case '\n':
 964                 case '\r':
 965                         read_c(env);
 966                         continue;
 967
 968                 default:
 969                         return;
 970                 }
 971         }
 972 }
 973
 974 static void skip_to(io_env_t *env, char to_ch)
 975 {
 976         while (env->c != to_ch && env->c != EOF) {
 977                 read_c(env);
 978         }
 979 }
 980
 981 static int expect_char(io_env_t *env, char ch)
 982 {
 983         skip_ws(env);
 984         if (env->c != ch) {
 985                 parse_error(env, "Unexpected char '%c', expected '%c'\n",
 986                             env->c, ch);
 987                 return 0;
 988         }
 989         read_c(env);
 990         return 1;
 991 }
 992
 993 #define EXPECT(c) if (expect_char(env, (c))) {} else return 0
 994
 995 static char *read_word(io_env_t *env)
 996 {
 997         skip_ws(env);
 998
 999         assert(obstack_object_size(&env->obst) == 0);
1000         while (true) {
1001                 int c = env->c;
1002                 switch (c) {
1003                 case EOF:
1004                 case ' ':
1005                 case '\t':
1006                 case '\n':
1007                 case '\r':
1008                         goto endofword;
1009
1010                 default:
1011                         obstack_1grow(&env->obst, c);
1012                         break;
1013                 }
1014                 read_c(env);
1015         }
1016
1017 endofword:
1018         obstack_1grow(&env->obst, '\0');
1019         return (char*)obstack_finish(&env->obst);
1020 }
1021
1022 static char *read_string(io_env_t *env)
1023 {
1024         skip_ws(env);
1025         if (env->c != '"') {
1026                 parse_error(env, "Expected string, got '%c'\n", env->c);
1027                 exit(1);
1028         }
1029         read_c(env);
1030
1031         assert(obstack_object_size(&env->obst) == 0);
1032         while (env->c != '"') {
1033                 if (env->c == EOF) {
1034                         parse_error(env, "Unexpected EOF while parsing string\n");
1035                         exit(1);
1036                 }
1037
1038                 if (env->c == '\\') {
1039                         read_c(env);
1040                         switch (env->c) {
1041                         case 'n':
1042                                 obstack_1grow(&env->obst, '\n');
1043                                 break;
1044                         case '"':
1045                         case '\\':
1046                                 obstack_1grow(&env->obst, env->c);
1047                                 break;
1048                         default:
1049                                 parse_error(env, "Unknown escape sequence '\\%c'\n", env->c);
1050                                 exit(1);
1051                         }
1052                 } else {
1053                         obstack_1grow(&env->obst, env->c);
1054                 }
1055                 read_c(env);
1056         }
1057         read_c(env);
1058         obstack_1grow(&env->obst, 0);
1059
1060         return (char*)obstack_finish(&env->obst);
1061 }
1062
1063 static ident *read_ident(io_env_t *env)
1064 {
1065         char  *str = read_string(env);
1066         ident *res = new_id_from_str(str);
1067         obstack_free(&env->obst, str);
1068         return res;
1069 }
1070
1071 /*
1072  * reads a "quoted string" or alternatively the token NULL
1073  */
1074 static char *read_string_null(io_env_t *env)
1075 {
1076         skip_ws(env);
1077         if (env->c == 'N') {
1078                 char *str = read_word(env);
1079                 if (strcmp(str, "NULL") == 0) {
1080                         obstack_free(&env->obst, str);
1081                         return NULL;
1082                 }
1083         } else if (env->c == '"') {
1084                 return read_string(env);
1085         }
1086
1087         parse_error(env, "Expected \"string\" or NULL\n");
1088         exit(1);
1089 }
1090
1091 static ident *read_ident_null(io_env_t *env)
1092 {
1093         ident *res;
1094         char  *str = read_string_null(env);
1095         if (str == NULL)
1096                 return NULL;
1097
1098         res = new_id_from_str(str);
1099         obstack_free(&env->obst, str);
1100         return res;
1101 }
1102
1103 static long read_long(io_env_t *env)
1104 {
1105         long  result;
1106         char *str;
1107
1108         skip_ws(env);
1109         if (!isdigit(env->c) && env->c != '-') {
1110                 parse_error(env, "Expected number, got '%c'\n", env->c);
1111                 exit(1);
1112         }
1113
1114         assert(obstack_object_size(&env->obst) == 0);
1115         do {
1116                 obstack_1grow(&env->obst, env->c);
1117                 read_c(env);
1118         } while (isdigit(env->c));
1119         obstack_1grow(&env->obst, 0);
1120
1121         str = (char*)obstack_finish(&env->obst);
1122         result = atol(str);
1123         obstack_free(&env->obst, str);
1124
1125         return result;
1126 }
1127
1128 static int read_int(io_env_t *env)
1129 {
1130         return (int) read_long(env);
1131 }
1132
1133 static unsigned read_unsigned(io_env_t *env)
1134 {
1135         return (unsigned) read_long(env);
1136 }
1137
1138 static size_t read_size_t(io_env_t *env)
1139 {
1140         /* FIXME */
1141         return (size_t) read_unsigned(env);
1142 }
1143
1144 static void expect_list_begin(io_env_t *env)
1145 {
1146         skip_ws(env);
1147         if (env->c != '[') {
1148                 parse_error(env, "Expected list, got '%c'\n", env->c);
1149                 exit(1);
1150         }
1151         read_c(env);
1152 }
1153
1154 static bool list_has_next(io_env_t *env)
1155 {
1156         if (feof(env->file)) {
1157                 parse_error(env, "Unexpected EOF while reading list");
1158                 exit(1);
1159         }
1160         skip_ws(env);
1161         if (env->c == ']') {
1162                 read_c(env);
1163                 return false;
1164         }
1165
1166         return true;
1167 }
1168
1169 static ir_node *get_node_or_null(io_env_t *env, long nodenr)
1170 {
1171         ir_node *node = (ir_node *) get_id(env, nodenr);
1172         if (node && node->kind != k_ir_node) {
1173                 panic("Irn ID %ld collides with something else in line %d\n",
1174                       nodenr, env->line);
1175         }
1176         return node;
1177 }
1178
1179 static ir_node *get_node_or_dummy(io_env_t *env, long nodenr)
1180 {
1181         ir_node *node = get_node_or_null(env, nodenr);
1182         if (node == NULL) {
1183                 node = new_r_Dummy(env->irg, mode_X);
1184                 set_id(env, nodenr, node);
1185         }
1186         return node;
1187 }
1188
1189 static ir_type *get_type(io_env_t *env, long typenr)
1190 {
1191         ir_type *type = (ir_type *) get_id(env, typenr);
1192         if (type == NULL)
1193                 panic("unknown type: %ld in line %d\n", typenr, env->line);
1194         else if (type->kind != k_type)
1195                 panic("type ID %ld collides with something else in line %d\n",
1196                       typenr, env->line);
1197         return type;
1198 }
1199
1200 static ir_type *read_type(io_env_t *env)
1201 {
1202         return get_type(env, read_long(env));
1203 }
1204
1205 static ir_entity *get_entity(io_env_t *env, long entnr)
1206 {
1207         ir_entity *entity = (ir_entity *) get_id(env, entnr);
1208         if (entity == NULL) {
1209                 parse_error(env, "unknown entity: %ld\n", entnr);
1210                 exit(1);
1211         } else if (entity->kind != k_entity) {
1212                 panic("Entity ID %ld collides with something else in line %d\n",
1213                       entnr, env->line);
1214         }
1215
1216         return entity;
1217 }
1218
1219 static ir_entity *read_entity(io_env_t *env)
1220 {
1221         return get_entity(env, read_long(env));
1222 }
1223
1224 static ir_mode *read_mode(io_env_t *env)
1225 {
1226         char *str = read_word(env);
1227         size_t i, n;
1228
1229         n = get_irp_n_modes();
1230         for (i = 0; i < n; i++) {
1231                 ir_mode *mode = get_irp_mode(i);
1232                 if (strcmp(str, get_mode_name(mode)) == 0) {
1233                         obstack_free(&env->obst, str);
1234                         return mode;
1235                 }
1236         }
1237
1238         parse_error(env, "unknown mode \"%s\"\n", str);
1239         exit(1);
1240 }
1241
1242 static const char *get_typetag_name(typetag_t typetag)
1243 {
1244         switch (typetag) {
1245         case tt_align:              return "align";
1246         case tt_allocation:         return "allocation";
1247         case tt_builtin:            return "builtin kind";
1248         case tt_cond_jmp_predicate: return "cond_jmp_predicate";
1249         case tt_initializer:        return "initializer kind";
1250         case tt_iro:                return "opcode";
1251         case tt_keyword:            return "keyword";
1252         case tt_linkage:            return "linkage";
1253         case tt_mode_arithmetic:    return "mode_arithmetic";
1254         case tt_mode_sort:          return "mode_sort";
1255         case tt_pin_state:          return "pin state";
1256         case tt_segment:            return "segment";
1257         case tt_tpo:                return "type";
1258         case tt_type_state:         return "type state";
1259         case tt_volatility:         return "volatility";
1260         case tt_visibility:         return "visibility";
1261         }
1262         return "<UNKNOWN>";
1263 }
1264
1265 /**
1266  * Read and decode an enum constant.
1267  */
1268 static unsigned read_enum(io_env_t *env, typetag_t typetag)
1269 {
1270         char     *str  = read_word(env);
1271         unsigned  code = symbol(str, typetag);
1272
1273         if (code != SYMERROR) {
1274                 obstack_free(&env->obst, str);
1275                 return code;
1276         }
1277
1278         parse_error(env, "invalid %s: \"%s\"\n", get_typetag_name(typetag), str);
1279         return 0;
1280 }
1281
1282 #define read_align(env)              ((ir_align)              read_enum(env, tt_align))
1283 #define read_allocation(env)         ((ir_allocation)         read_enum(env, tt_allocation))
1284 #define read_builtin_kind(env)       ((ir_builtin_kind)       read_enum(env, tt_builtin))
1285 #define read_cond_jmp_predicate(env) ((cond_jmp_predicate)    read_enum(env, tt_cond_jmp_predicate))
1286 #define read_initializer_kind(env)   ((ir_initializer_kind_t) read_enum(env, tt_initializer))
1287 #define read_mode_arithmetic(env)    ((ir_mode_arithmetic)    read_enum(env, tt_mode_arithmetic))
1288 #define read_peculiarity(env)        ((ir_peculiarity)        read_enum(env, tt_peculiarity))
1289 #define read_pin_state(env)          ((op_pin_state)          read_enum(env, tt_pin_state))
1290 #define read_type_state(env)         ((ir_type_state)         read_enum(env, tt_type_state))
1291 #define read_variability(env)        ((ir_variability)        read_enum(env, tt_variability))
1292 #define read_volatility(env)         ((ir_volatility)         read_enum(env, tt_volatility))
1293
1294 static ir_cons_flags get_cons_flags(io_env_t *env)
1295 {
1296         ir_cons_flags flags = cons_none;
1297
1298         op_pin_state pinstate = read_pin_state(env);
1299         switch (pinstate) {
1300         case op_pin_state_floats: flags |= cons_floats; break;
1301         case op_pin_state_pinned: break;
1302         default:
1303                 panic("Error in %d: Invalid pinstate: %s", env->line,
1304                       get_op_pin_state_name(pinstate));
1305         }
1306
1307         if (read_volatility(env) == volatility_is_volatile)
1308                 flags |= cons_volatile;
1309         if (read_align(env) == align_non_aligned)
1310                 flags |= cons_unaligned;
1311
1312         return flags;
1313 }
1314
1315 static ir_tarval *read_tv(io_env_t *env)
1316 {
1317         ir_mode   *tvmode = read_mode(env);
1318         char      *str    = read_word(env);
1319         ir_tarval *tv     = new_tarval_from_str(str, strlen(str), tvmode);
1320         obstack_free(&env->obst, str);
1321
1322         return tv;
1323 }
1324
1325 static ir_initializer_t *read_initializer(io_env_t *env)
1326 {
1327         ir_initializer_kind_t ini_kind = read_initializer_kind(env);
1328
1329         switch (ini_kind) {
1330         case IR_INITIALIZER_CONST: {
1331                 ir_node *irn = get_node_or_dummy(env, read_long(env));
1332                 return create_initializer_const(irn);
1333         }
1334
1335         case IR_INITIALIZER_TARVAL:
1336                 return create_initializer_tarval(read_tv(env));
1337
1338         case IR_INITIALIZER_NULL:
1339                 return get_initializer_null();
1340
1341         case IR_INITIALIZER_COMPOUND: {
1342                 size_t i, n = read_size_t(env);
1343                 ir_initializer_t *ini = create_initializer_compound(n);
1344                 for (i = 0; i < n; i++) {
1345                         ir_initializer_t *curini = read_initializer(env);
1346                         set_initializer_compound_value(ini, i, curini);
1347                 }
1348                 return ini;
1349         }
1350
1351         default:
1352                 panic("Unknown initializer kind");
1353         }
1354 }
1355
1356
1357 /** Reads a type description and remembers it by its id. */
1358 static void import_type(io_env_t *env)
1359 {
1360         int            i;
1361         ir_type       *type;
1362         long           typenr = read_long(env);
1363         tp_opcode      tpop   = (tp_opcode) read_enum(env, tt_tpo);
1364         unsigned       size   = (unsigned) read_long(env);
1365         unsigned       align  = (unsigned) read_long(env);
1366         ir_type_state  state  = read_type_state(env);
1367         unsigned       flags  = (unsigned) read_long(env);
1368
1369         switch (tpop) {
1370         case tpo_array: {
1371                 int ndims = (int) read_long(env);
1372                 long elemtypenr = read_long(env);
1373                 ir_type *elemtype = get_type(env, elemtypenr);
1374
1375                 type = new_type_array(ndims, elemtype);
1376                 for (i = 0; i < ndims; i++) {
1377                         char *str = read_word(env);
1378                         if (strcmp(str, "unknown") != 0) {
1379                                 long lowerbound = atol(str);
1380                                 set_array_lower_bound_int(type, i, lowerbound);
1381                         }
1382                         obstack_free(&env->obst, str);
1383
1384                         str = read_word(env);
1385                         if (strcmp(str, "unknown") != 0) {
1386                                 long upperbound = atol(str);
1387                                 set_array_upper_bound_int(type, i, upperbound);
1388                         }
1389                         obstack_free(&env->obst, str);
1390                 }
1391                 set_type_size_bytes(type, size);
1392                 break;
1393         }
1394
1395         case tpo_class: {
1396                 ident *id = read_ident_null(env);
1397
1398                 if (typenr == (long) IR_SEGMENT_GLOBAL)
1399                         type = get_glob_type();
1400                 else
1401                         type = new_type_class(id);
1402                 set_type_size_bytes(type, size);
1403                 break;
1404         }
1405
1406         case tpo_method: {
1407                 unsigned                  callingconv = (unsigned) read_long(env);
1408                 mtp_additional_properties addprops    = (mtp_additional_properties) read_long(env);
1409                 int nparams          = (int)      read_long(env);
1410                 int nresults         = (int)      read_long(env);
1411                 int variadicity;
1412
1413                 type = new_type_method(nparams, nresults);
1414
1415                 for (i = 0; i < nparams; i++) {
1416                         long ptypenr = read_long(env);
1417                         ir_type *paramtype = get_type(env, ptypenr);
1418
1419                         set_method_param_type(type, i, paramtype);
1420                 }
1421                 for (i = 0; i < nresults; i++) {
1422                         long ptypenr = read_long(env);
1423                         ir_type *restype = get_type(env, ptypenr);
1424
1425                         set_method_res_type(type, i, restype);
1426                 }
1427
1428                 variadicity = (int) read_long(env);
1429                 set_method_variadicity(type, variadicity);
1430
1431                 set_method_calling_convention(type, callingconv);
1432                 set_method_additional_properties(type, addprops);
1433                 break;
1434         }
1435
1436         case tpo_pointer: {
1437                 ir_mode *mode     = read_mode(env);
1438                 ir_type *pointsto = get_type(env, read_long(env));
1439                 type = new_type_pointer(pointsto);
1440                 set_type_mode(type, mode);
1441                 break;
1442         }
1443
1444         case tpo_primitive: {
1445                 ir_mode *mode = read_mode(env);
1446                 type = new_type_primitive(mode);
1447                 break;
1448         }
1449
1450         case tpo_struct: {
1451                 ident *id = read_ident_null(env);
1452                 type = new_type_struct(id);
1453                 set_type_size_bytes(type, size);
1454                 break;
1455         }
1456
1457         case tpo_union: {
1458                 ident *id = read_ident_null(env);
1459                 type = new_type_union(id);
1460                 set_type_size_bytes(type, size);
1461                 break;
1462         }
1463
1464         case tpo_unknown:
1465                 return;   /* ignore unknown type */
1466
1467         default:
1468                 parse_error(env, "unknown type kind: \"%d\"\n", tpop);
1469                 skip_to(env, '\n');
1470                 return;
1471         }
1472
1473         set_type_alignment_bytes(type, align);
1474         type->flags = flags;
1475
1476         if (state == layout_fixed)
1477                 ARR_APP1(ir_type *, env->fixedtypes, type);
1478
1479         set_id(env, typenr, type);
1480 }
1481
1482 /** Reads an entity description and remembers it by its id. */
1483 static void import_entity(io_env_t *env)
1484 {
1485         long           entnr      = read_long(env);
1486         ident         *name       = read_ident(env);
1487         ident         *ld_name    = read_ident_null(env);
1488         ir_visibility  visibility = ir_visibility_default;
1489         ir_linkage     linkage    = IR_LINKAGE_DEFAULT;
1490         long           typenr;
1491         long           ownertypenr;
1492         const char    *str;
1493         ir_type       *type;
1494         ir_type       *ownertype;
1495         ir_entity     *entity;
1496
1497         skip_ws(env);
1498         while (!isdigit(env->c)) {
1499                 char     *vstr = read_word(env);
1500                 unsigned  v;
1501
1502                 skip_ws(env);
1503
1504                 v = symbol(vstr, tt_visibility);
1505                 if (v != SYMERROR) {
1506                         visibility = (ir_visibility)v;
1507                         continue;
1508                 }
1509                 v = symbol(vstr, tt_linkage);
1510                 if (v != SYMERROR) {
1511                         linkage |= (ir_linkage)v;
1512                         continue;
1513                 }
1514                 printf("Parser error, expected visibility or linkage, got '%s'\n",
1515                        vstr);
1516                 break;
1517         }
1518
1519         typenr      = read_long(env);
1520         ownertypenr = read_long(env);
1521
1522         type      = get_type(env, typenr);
1523         ownertype = !ownertypenr ? get_glob_type() : get_type(env, ownertypenr);
1524         entity    = new_entity(ownertype, name, type);
1525
1526         if (ld_name != NULL)
1527                 set_entity_ld_ident(entity, ld_name);
1528         set_entity_offset(entity, (int) read_long(env));
1529         set_entity_offset_bits_remainder(entity, (unsigned char) read_long(env));
1530         set_entity_compiler_generated(entity, (int) read_long(env));
1531         set_entity_volatility(entity, read_volatility(env));
1532         set_entity_visibility(entity, visibility);
1533         set_entity_linkage(entity, linkage);
1534
1535         str = read_word(env);
1536         if (strcmp(str, "initializer") == 0) {
1537                 set_entity_initializer(entity, read_initializer(env));
1538         } else if (strcmp(str, "compoundgraph") == 0) {
1539                 int n = (int) read_long(env);
1540                 int i;
1541                 for (i = 0; i < n; i++) {
1542                         ir_entity *member = get_entity(env, read_long(env));
1543                         ir_node   *irn    = get_node_or_dummy(env, read_long(env));
1544                         add_compound_ent_value(entity, irn, member);
1545                 }
1546         } else if (strcmp(str, "none") == 0) {
1547                 /* do nothing */
1548         } else {
1549                 parse_error(env, "expected 'initializer', 'compoundgraph' or 'none' got '%s'\n", str);
1550                 exit(1);
1551         }
1552
1553         set_id(env, entnr, entity);
1554 }
1555
1556 /** Parses the whole type graph. */
1557 static int parse_typegraph(io_env_t *env)
1558 {
1559         ir_graph *old_irg = env->irg;
1560         keyword_t kwkind;
1561
1562         EXPECT('{');
1563
1564         env->irg = get_const_code_irg();
1565
1566         /* parse all types first */
1567         while (true) {
1568                 skip_ws(env);
1569                 if (env->c == '}') {
1570                         read_c(env);
1571                         break;
1572                 }
1573
1574                 kwkind = (keyword_t) read_enum(env, tt_keyword);
1575                 switch (kwkind) {
1576                 case kw_type:
1577                         import_type(env);
1578                         break;
1579
1580                 case kw_entity:
1581                         import_entity(env);
1582                         break;
1583
1584                 default:
1585                         parse_error(env, "type graph element not supported yet: %d\n", kwkind);
1586                         skip_to(env, '\n');
1587                         break;
1588                 }
1589         }
1590         env->irg = old_irg;
1591         return 1;
1592 }
1593
1594 static int read_node_header(io_env_t *env, long *nodenr, ir_node ***preds,
1595                             const char **nodename)
1596 {
1597         int numpreds;
1598
1599         *nodename = read_word(env);
1600         *nodenr   = read_long(env);
1601
1602         ARR_RESIZE(ir_node*, *preds, 0);
1603
1604         expect_list_begin(env);
1605         for (numpreds = 0; list_has_next(env); numpreds++) {
1606                 long     val  = read_long(env);
1607                 ir_node *pred = get_node_or_dummy(env, val);
1608                 ARR_APP1(ir_node*, *preds, pred);
1609         }
1610
1611         return numpreds;
1612 }
1613
1614 static ir_node *read_ASM(io_env_t *env, int numpreds, ir_node **preds)
1615 {
1616         ir_node *newnode;
1617         ir_asm_constraint *input_constraints  = NEW_ARR_F(ir_asm_constraint, 0);
1618         ir_asm_constraint *output_constraints = NEW_ARR_F(ir_asm_constraint, 0);
1619         ident            **clobbers           = NEW_ARR_F(ident*, 0);
1620
1621         ident *asm_text = read_ident(env);
1622
1623         expect_list_begin(env);
1624         while (list_has_next(env)) {
1625                 ir_asm_constraint constraint;
1626                 constraint.pos        = read_unsigned(env);
1627                 constraint.constraint = read_ident(env);
1628                 constraint.mode       = read_mode(env);
1629                 ARR_APP1(ir_asm_constraint, input_constraints, constraint);
1630         }
1631
1632         expect_list_begin(env);
1633         while (list_has_next(env)) {
1634                 ir_asm_constraint constraint;
1635                 constraint.pos        = read_unsigned(env);
1636                 constraint.constraint = read_ident(env);
1637                 constraint.mode       = read_mode(env);
1638                 ARR_APP1(ir_asm_constraint, output_constraints, constraint);
1639         }
1640
1641         expect_list_begin(env);
1642         while (list_has_next(env)) {
1643                 ident *clobber = read_ident(env);
1644                 ARR_APP1(ident*, clobbers, clobber);
1645         }
1646
1647         assert(ARR_LEN(input_constraints) == (size_t)numpreds-1);
1648
1649         newnode = new_r_ASM(preds[0], numpreds-1, preds+1,
1650                         input_constraints,
1651                         ARR_LEN(output_constraints),
1652                         output_constraints,
1653                         ARR_LEN(clobbers),
1654                         clobbers,
1655                         asm_text);
1656         DEL_ARR_F(clobbers);
1657         DEL_ARR_F(output_constraints);
1658         DEL_ARR_F(input_constraints);
1659         return newnode;
1660 }
1661
1662 /** Parses an IRG. */
1663 static int parse_graph(io_env_t *env, ir_graph *irg)
1664 {
1665         ir_node   **preds = NEW_ARR_F(ir_node*,0);
1666         int         i, numpreds, ret = 1;
1667         long        nodenr;
1668         const char *nodename;
1669         ir_node    *node, *newnode;
1670
1671         env->irg = irg;
1672
1673         EXPECT('{');
1674
1675         while (true) {
1676                 skip_ws(env);
1677                 if (env->c == '}') {
1678                         read_c(env);
1679                         break;
1680                 }
1681
1682                 numpreds = read_node_header(env, &nodenr, &preds, &nodename);
1683
1684                 node = get_node_or_null(env, nodenr);
1685                 newnode = NULL;
1686
1687                 EXPECT('{');
1688
1689                 switch (symbol(nodename, tt_iro)) {
1690                 case iro_End: {
1691                         ir_node *newendblock = preds[0];
1692                         newnode = get_irg_end(irg);
1693                         exchange(get_nodes_block(newnode), newendblock);
1694                         for (i = 1; i < numpreds; i++)
1695                                 add_irn_n(newnode, preds[i]);
1696                         break;
1697                 }
1698
1699                 case iro_Start: {
1700                         ir_node *newstartblock = preds[0];
1701                         newnode = get_irg_start(irg);
1702                         exchange(get_nodes_block(newnode), newstartblock);
1703                         break;
1704                 }
1705
1706                 case iro_Block:
1707                         newnode = new_r_Block(irg, numpreds, preds);
1708                         break;
1709
1710                 case iro_Anchor:
1711                         newnode = irg->anchor;
1712                         for (i = 1; i < numpreds; i++)
1713                                 set_irn_n(newnode, i-1, preds[i]);
1714                         set_nodes_block(newnode, preds[0]);
1715                         break;
1716
1717                 case iro_SymConst: {
1718                         long entnr = read_long(env);
1719                         union symconst_symbol sym;
1720                         sym.entity_p = get_entity(env, entnr);
1721                         newnode = new_r_SymConst(irg, mode_P, sym, symconst_addr_ent);
1722                         break;
1723                 }
1724
1725                 case iro_Proj: {
1726                         ir_mode *mode = read_mode(env);
1727                         long     pn   = read_long(env);
1728                         newnode = new_r_Proj(preds[1], mode, pn);
1729                         /* explicitely set block, since preds[1] might be a dummy node
1730                          * which is always in the startblock */
1731                         set_nodes_block(newnode, preds[0]);
1732                         break;
1733                 }
1734
1735                 case iro_ASM:
1736                         newnode = read_ASM(env, numpreds, preds);
1737                         break;
1738
1739                 #include "gen_irio_import.inl"
1740
1741                 default:
1742                         goto notsupported;
1743                 }
1744
1745                 EXPECT('}');
1746
1747                 if (!newnode) {
1748 notsupported:
1749                         parse_error(env, "node type not supported yet: %s\n", nodename);
1750                         abort();
1751                 }
1752
1753                 if (node)
1754                         exchange(node, newnode);
1755                 /* Always update hash entry to avoid more uses of id nodes */
1756                 set_id(env, nodenr, newnode);
1757         }
1758
1759         DEL_ARR_F(preds);
1760
1761         return ret;
1762 }
1763
1764 static int parse_modes(io_env_t *env)
1765 {
1766         EXPECT('{');
1767
1768         while (true) {
1769                 keyword_t kwkind;
1770
1771                 skip_ws(env);
1772                 if (env->c == '}') {
1773                         read_c(env);
1774                         break;
1775                 }
1776
1777                 kwkind = (keyword_t) read_enum(env, tt_keyword);
1778                 switch (kwkind) {
1779                 case kw_mode: {
1780                         const char *name = read_string(env);
1781                         ir_mode_sort sort = (ir_mode_sort)read_enum(env, tt_mode_sort);
1782                         int size = read_long(env);
1783                         int sign = read_long(env);
1784                         ir_mode_arithmetic arith = read_mode_arithmetic(env);
1785                         unsigned modulo_shift = read_long(env);
1786                         int vector_elems = read_long(env);
1787                         ir_mode *mode;
1788
1789                         if (vector_elems != 1) {
1790                                 panic("no support for import of vector modes yes");
1791                         }
1792
1793                         mode = new_ir_mode(name, sort, size, sign, arith, modulo_shift);
1794                         if (mode_is_reference(mode)) {
1795                                 set_reference_mode_signed_eq(mode, read_mode(env));
1796                                 set_reference_mode_unsigned_eq(mode, read_mode(env));
1797                         }
1798                         break;
1799                 }
1800
1801                 default:
1802                         skip_to(env, '\n');
1803                         break;
1804                 }
1805         }
1806         return 1;
1807 }
1808
1809 static int parse_program(io_env_t *env)
1810 {
1811         EXPECT('{');
1812
1813         while (true) {
1814                 keyword_t kwkind;
1815
1816                 skip_ws(env);
1817                 if (env->c == '}') {
1818                         read_c(env);
1819                         break;
1820                 }
1821
1822                 kwkind = (keyword_t) read_enum(env, tt_keyword);
1823                 switch (kwkind) {
1824                 case kw_segment_type: {
1825                         ir_segment_t  segment = (ir_segment_t) read_enum(env, tt_segment);
1826                         ir_type      *type    = read_type(env);
1827                         set_segment_type(segment, type);
1828                         break;
1829                 }
1830                 default:
1831                         parse_error(env, "unexpected keyword %d\n", kwkind);
1832                         skip_to(env, '\n');
1833                 }
1834         }
1835         return 1;
1836 }
1837
1838 void ir_import(const char *filename)
1839 {
1840         FILE *file = fopen(filename, "rt");
1841         if (file == NULL) {
1842                 perror(filename);
1843                 exit(1);
1844         }
1845
1846         ir_import_file(file, filename);
1847
1848         fclose(file);
1849 }
1850
1851 void ir_import_file(FILE *input, const char *inputname)
1852 {
1853         int oldoptimize = get_optimize();
1854         firm_verification_t oldver = get_node_verification_mode();
1855         io_env_t ioenv;
1856         io_env_t *env = &ioenv;
1857         size_t i, n;
1858
1859         symtbl_init();
1860
1861         memset(env, 0, sizeof(*env));
1862         obstack_init(&env->obst);
1863         env->idset      = new_set(id_cmp, 128);
1864         env->fixedtypes = NEW_ARR_F(ir_type *, 0);
1865         env->inputname  = inputname;
1866         env->file       = input;
1867         env->line       = 1;
1868
1869         /* read first character */
1870         read_c(env);
1871
1872         set_optimize(0);
1873         do_node_verification(FIRM_VERIFICATION_OFF);
1874
1875         while (true) {
1876                 keyword_t kw;
1877
1878                 skip_ws(env);
1879                 if (env->c == EOF)
1880                         break;
1881
1882                 kw = (keyword_t)read_enum(env, tt_keyword);
1883                 switch (kw) {
1884                 case kw_modes:
1885                         if (!parse_modes(env)) goto end;
1886                         break;
1887
1888                 case kw_typegraph:
1889                         if (!parse_typegraph(env)) goto end;
1890                         break;
1891
1892                 case kw_irg:
1893                 {
1894                         ir_entity *irgent = get_entity(env, read_long(env));
1895                         ir_graph *irg = new_ir_graph(irgent, 0);
1896                         set_irg_frame_type(irg, get_type(env, read_long(env)));
1897                         if (!parse_graph(env, irg)) goto end;
1898                         break;
1899                 }
1900
1901                 case kw_constirg: {
1902                         ir_graph *constirg = get_const_code_irg();
1903                         long bodyblockid = read_long(env);
1904                         set_id(env, bodyblockid, constirg->current_block);
1905                         if (!parse_graph(env, constirg)) goto end;
1906                         break;
1907                 }
1908
1909                 case kw_program:
1910                         parse_program(env);
1911                         break;
1912
1913                 default: {
1914                         parse_error(env, "Unexpected keyword %d at toplevel\n", kw);
1915                         exit(1);
1916                 }
1917                 }
1918         }
1919
1920 end:
1921         n = ARR_LEN(env->fixedtypes);
1922         for (i = 0; i < n; i++)
1923                 set_type_state(env->fixedtypes[i], layout_fixed);
1924
1925         DEL_ARR_F(env->fixedtypes);
1926
1927         del_set(env->idset);
1928
1929         irp_finalize_cons();
1930
1931         do_node_verification(oldver);
1932         set_optimize(oldoptimize);
1933
1934         obstack_free(&env->obst, NULL);
1935 }