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

   1 /*
   2  * Copyright (C) 1995-2009 University of Karlsruhe.  All right reserved.
   3  *
   4  * This file is part of libFirm.
   5  *
   6  * This file may be distributed and/or modified under the terms of the
   7  * GNU General Public License version 2 as published by the Free Software
   8  * Foundation and appearing in the file LICENSE.GPL included in the
   9  * packaging of this file.
  10  *
  11  * Licensees holding valid libFirm Professional Edition licenses may use
  12  * this file in accordance with the libFirm Commercial License.
  13  * Agreement provided with the Software.
  14  *
  15  * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  16  * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17  * PURPOSE.
  18  */
  19
  20 /**
  21  * @file
  22  * @brief   Write textual representation of firm to file.
  23  * @author  Moritz Kroll
  24  * @version $Id$
  25  */
  26 #include "config.h"
  27
  28 #include <string.h>
  29
  30 #include "irio.h"
  31
  32 #include "irnode_t.h"
  33 #include "irprog.h"
  34 #include "irgraph_t.h"
  35 #include "ircons.h"
  36 #include "irgmod.h"
  37 #include "irflag_t.h"
  38 #include "irgwalk.h"
  39 #include "tv.h"
  40 #include "array.h"
  41 #include "error.h"
  42 #include "adt/set.h"
  43
  44 #define SYMERROR ((unsigned) ~0)
  45
  46 typedef struct io_env
  47 {
  48         FILE *file;
  49         set *idset;               /**< id_entry set, which maps from file ids to new Firm elements */
  50         int ignoreblocks;
  51         int line, col;
  52         ir_type **fixedtypes;
  53 } io_env_t;
  54
  55 typedef enum typetag_t
  56 {
  57         tt_iro,
  58         tt_tpo,
  59         tt_align,
  60         tt_allocation,
  61         tt_peculiarity,
  62         tt_pin_state,
  63         tt_type_state,
  64         tt_variability,
  65         tt_visibility,
  66         tt_volatility
  67 } typetag_t;
  68
  69 typedef struct symbol_t
  70 {
  71         const char *str;      /**< The name of this symbol. */
  72         typetag_t   typetag;  /**< The type tag of this symbol. */
  73         unsigned    code;     /**< The value of this symbol. */
  74 } symbol_t;
  75
  76 typedef struct id_entry
  77 {
  78         long id;
  79         void *elem;
  80 } id_entry;
  81
  82 /** The symbol table, a set of symbol_t elements. */
  83 static set *symtbl;
  84
  85
  86 /**
  87  * Calculate a hash value for a string.
  88  */
  89 static unsigned string_hash(const char *str, int len)
  90 {
  91         return str[0] * 27893 ^ str[len-1] * 81 ^ str[len >> 1];
  92 }
  93
  94 /**
  95  * Compare two symbol table entries.
  96  */
  97 static int symbol_cmp(const void *elt, const void *key, size_t size)
  98 {
  99         const symbol_t *entry = (const symbol_t *) elt;
 100         const symbol_t *keyentry = (const symbol_t *) key;
 101         (void) size;
 102         return strcmp(entry->str, keyentry->str);
 103 }
 104
 105 static int id_cmp(const void *elt, const void *key, size_t size)
 106 {
 107         const id_entry *entry = (const id_entry *) elt;
 108         const id_entry *keyentry = (const id_entry *) key;
 109         (void) size;
 110         return entry->id - keyentry->id;
 111 }
 112
 113 /** Initializes the symbol table. May be called more than once without problems. */
 114 static void symtbl_init(void)
 115 {
 116         symbol_t key;
 117
 118         /* Only initialize once */
 119         if(symtbl != NULL)
 120                 return;
 121
 122         symtbl = new_set(symbol_cmp, 32);
 123
 124 #define INSERT(s, tt, cod)                                       \
 125         key.str = (s);                                               \
 126         key.typetag = (tt);                                          \
 127         key.code = (cod);                                            \
 128         set_insert(symtbl, &key, sizeof(key), string_hash(s, sizeof(s)-1))
 129
 130 #define INSERTENUM(tt, e) INSERT(#e, tt, e)
 131
 132         INSERT("array", tt_tpo, tpo_array);
 133         INSERT("class", tt_tpo, tpo_class);
 134         INSERT("method", tt_tpo, tpo_method);
 135         INSERT("pointer", tt_tpo, tpo_pointer);
 136         INSERT("primitive", tt_tpo, tpo_primitive);
 137         INSERT("struct", tt_tpo, tpo_struct);
 138         INSERT("Unknown", tt_tpo, tpo_unknown);
 139
 140 #include "gen_irio_lex.inl"
 141
 142         INSERTENUM(tt_align, align_non_aligned);
 143         INSERTENUM(tt_align, align_is_aligned);
 144
 145         INSERTENUM(tt_allocation, allocation_automatic);
 146         INSERTENUM(tt_allocation, allocation_parameter);
 147         INSERTENUM(tt_allocation, allocation_dynamic);
 148         INSERTENUM(tt_allocation, allocation_static);
 149
 150         INSERTENUM(tt_pin_state, op_pin_state_floats);
 151         INSERTENUM(tt_pin_state, op_pin_state_pinned);
 152         INSERTENUM(tt_pin_state, op_pin_state_exc_pinned);
 153         INSERTENUM(tt_pin_state, op_pin_state_mem_pinned);
 154
 155         INSERTENUM(tt_type_state, layout_undefined);
 156         INSERTENUM(tt_type_state, layout_fixed);
 157
 158         INSERTENUM(tt_variability, variability_uninitialized);
 159         INSERTENUM(tt_variability, variability_initialized);
 160         INSERTENUM(tt_variability, variability_part_constant);
 161         INSERTENUM(tt_variability, variability_constant);
 162
 163         INSERTENUM(tt_visibility, visibility_local);
 164         INSERTENUM(tt_visibility, visibility_external_visible);
 165         INSERTENUM(tt_visibility, visibility_external_allocated);
 166
 167         INSERTENUM(tt_volatility, volatility_non_volatile);
 168         INSERTENUM(tt_volatility, volatility_is_volatile);
 169
 170         INSERTENUM(tt_peculiarity, peculiarity_description);
 171         INSERTENUM(tt_peculiarity, peculiarity_inherited);
 172         INSERTENUM(tt_peculiarity, peculiarity_existent);
 173
 174 #undef INSERTENUM
 175 #undef INSERT
 176 }
 177
 178 /** Returns the according symbol value for the given string and tag, or SYMERROR if none was found. */
 179 static unsigned symbol(const char *str, typetag_t typetag)
 180 {
 181         symbol_t key, *entry;
 182
 183         key.str = str;
 184
 185         entry = set_find(symtbl, &key, sizeof(key), string_hash(str, strlen(str)));
 186         if (entry && entry->typetag == typetag) {
 187                 return entry->code;
 188         }
 189         return SYMERROR;
 190 }
 191
 192 static void *get_id(io_env_t *env, long id)
 193 {
 194         id_entry key, *entry;
 195         key.id = id;
 196
 197         entry = set_find(env->idset, &key, sizeof(key), (unsigned) id);
 198         return entry ? entry->elem : NULL;
 199 }
 200
 201 static void set_id(io_env_t *env, long id, void *elem)
 202 {
 203         id_entry key;
 204         key.id = id;
 205         key.elem = elem;
 206         set_insert(env->idset, &key, sizeof(key), (unsigned) id);
 207 }
 208
 209 static void write_mode(io_env_t *env, ir_mode *mode)
 210 {
 211         fputs(get_mode_name(mode), env->file);
 212         fputc(' ', env->file);
 213 }
 214
 215 static void write_pin_state(io_env_t *env, ir_node *irn)
 216 {
 217         fputs(get_op_pin_state_name(get_irn_pinned(irn)), env->file);
 218         fputc(' ', env->file);
 219 }
 220
 221 static void write_volatility(io_env_t *env, ir_node *irn)
 222 {
 223         ir_volatility vol;
 224
 225         if(is_Load(irn)) vol = get_Load_volatility(irn);
 226         else if(is_Store(irn)) vol = get_Store_volatility(irn);
 227         else assert(0 && "Invalid optype for write_volatility");
 228
 229         fputs(get_volatility_name(vol), env->file);
 230         fputc(' ', env->file);
 231 }
 232
 233 static void write_align(io_env_t *env, ir_node *irn)
 234 {
 235         ir_align align;
 236
 237         if(is_Load(irn)) align = get_Load_align(irn);
 238         else if(is_Store(irn)) align = get_Store_align(irn);
 239         else assert(0 && "Invalid optype for write_align");
 240
 241         fputs(get_align_name(align), env->file);
 242         fputc(' ', env->file);
 243 }
 244
 245 static void export_type(io_env_t *env, ir_type *tp)
 246 {
 247         FILE *f = env->file;
 248         int i;
 249         fprintf(f, "\ttype %ld %s \"%s\" %u %u %s %s ",
 250                         get_type_nr(tp),
 251                         get_type_tpop_name(tp),
 252                         get_type_name(tp),
 253                         get_type_size_bytes(tp),
 254                         get_type_alignment_bytes(tp),
 255                         get_type_state_name(get_type_state(tp)),
 256                         get_visibility_name(get_type_visibility(tp)));
 257
 258         switch(get_type_tpop_code(tp))
 259         {
 260                 case tpo_array:
 261                 {
 262                         int n = get_array_n_dimensions(tp);
 263                         fprintf(f, "%i %ld ", n, get_type_nr(get_array_element_type(tp)));
 264                         for(i = 0; i < n; i++)
 265                         {
 266                                 ir_node *lower = get_array_lower_bound(tp, i);
 267                                 ir_node *upper = get_array_upper_bound(tp, i);
 268
 269                                 if(is_Const(lower)) fprintf(f, "%ld ", get_tarval_long(get_Const_tarval(lower)));
 270                                 else panic("Lower array bound is not constant");
 271
 272                                 if(is_Const(upper)) fprintf(f, "%ld ", get_tarval_long(get_Const_tarval(upper)));
 273                                 else panic("Upper array bound is not constant");
 274                         }
 275                         break;
 276                 }
 277
 278                 case tpo_class:
 279                         /* TODO: inheritance stuff not supported yet */
 280                         printf("Inheritance of classes not supported yet!\n");
 281                         break;
 282
 283                 case tpo_method:
 284                 {
 285                         int nparams = get_method_n_params(tp);
 286                         int nresults = get_method_n_ress(tp);
 287                         fprintf(f, "%i %i ", nparams, nresults);
 288                         for(i = 0; i < nparams; i++)
 289                                 fprintf(f, "%ld ", get_type_nr(get_method_param_type(tp, i)));
 290                         for(i = 0; i < nresults; i++)
 291                                 fprintf(f, "%ld ", get_type_nr(get_method_res_type(tp, i)));
 292                         break;
 293                 }
 294
 295                 case tpo_pointer:
 296                         write_mode(env, get_type_mode(tp));
 297                         fprintf(f, "%ld ", get_type_nr(get_pointer_points_to_type(tp)));
 298                         break;
 299
 300                 case tpo_primitive:
 301                         write_mode(env, get_type_mode(tp));
 302                         break;
 303
 304                 case tpo_struct:
 305                         break;
 306
 307                 case tpo_unknown:
 308                         break;
 309
 310                 default:
 311                         printf("export_type: Unknown type code \"%s\".\n", get_type_tpop_name(tp));
 312                         break;
 313         }
 314         fputc('\n', f);
 315 }
 316
 317 static void export_entity(io_env_t *env, ir_entity *ent)
 318 {
 319         ir_type *owner = get_entity_owner(ent);
 320         fprintf(env->file, "\tentity %ld \"%s\" \"%s\" %ld %ld %d %u %s %s %s %s %s ",
 321                         get_entity_nr(ent),
 322                         get_entity_name(ent),
 323                         ent->ld_name ? get_id_str(ent->ld_name) : "",
 324                         get_type_nr(get_entity_type(ent)),
 325                         get_type_nr(owner),
 326                         get_entity_offset(ent),
 327                         (unsigned) get_entity_offset_bits_remainder(ent),
 328                         get_allocation_name(get_entity_allocation(ent)),
 329                         get_visibility_name(get_entity_visibility(ent)),
 330                         get_variability_name(get_entity_variability(ent)),
 331                         get_peculiarity_name(get_entity_peculiarity(ent)),
 332                         get_volatility_name(get_entity_volatility(ent)));
 333
 334         // TODO: inheritance stuff for class entities not supported yet
 335         if(is_Class_type(owner) && owner != get_glob_type())
 336                 printf("Inheritance of class entities not supported yet!\n");
 337
 338         if(get_entity_variability(ent) != variability_uninitialized
 339                 && get_entity_visibility(ent) != visibility_external_allocated)
 340         {
 341                 if(is_compound_entity(ent))
 342                 {
 343                         int i, n = get_compound_ent_n_values(ent);
 344                         fprintf(env->file, "%d ", n);
 345                         for(i = 0; i < n; i++)
 346                         {
 347                                 ir_entity *member = get_compound_ent_value_member(ent, i);
 348                                 ir_node   *irn    = get_compound_ent_value(ent, i);
 349                                 fprintf(env->file, "%ld %ld ", get_entity_nr(member), get_irn_node_nr(irn));
 350                         }
 351                 }
 352                 else
 353                 {
 354                         ir_node *irn = get_atomic_ent_value(ent);
 355                         fprintf(env->file, "%ld ", get_irn_node_nr(irn));
 356                 }
 357         }
 358
 359         fputc('\n', env->file);
 360 }
 361
 362 static void export_type_or_ent(type_or_ent tore, void *ctx)
 363 {
 364         io_env_t *env = (io_env_t *) ctx;
 365
 366         switch(get_kind(tore.ent))
 367         {
 368                 case k_entity:
 369                         export_entity(env, tore.ent);
 370                         break;
 371
 372                 case k_type:
 373                         export_type(env, tore.typ);
 374                         break;
 375
 376                 default:
 377                         printf("export_type_or_ent: Unknown type or entity.\n");
 378                         break;
 379         }
 380 }
 381
 382 static void export_node(ir_node *irn, void *ctx)
 383 {
 384         io_env_t *env = (io_env_t *) ctx;
 385         int i, n;
 386         unsigned opcode = get_irn_opcode(irn);
 387         char buf[1024];
 388
 389         if(env->ignoreblocks && opcode == iro_Block)
 390                 return;
 391
 392         n = get_irn_arity(irn);
 393
 394         fprintf(env->file, "\t%s %ld [ ", get_irn_opname(irn), get_irn_node_nr(irn));
 395
 396         for(i = -1; i < n; i++)
 397         {
 398                 ir_node *pred = get_irn_n(irn, i);
 399                 if(pred == NULL) {
 400                         /* Anchor node may have NULL predecessors */
 401                         assert(is_Anchor(irn));
 402                         fputs("-1 ", env->file);
 403                 } else {
 404                         fprintf(env->file, "%ld ", get_irn_node_nr(pred));
 405                 }
 406         }
 407
 408         fprintf(env->file, "] { ");
 409
 410         switch(opcode)
 411         {
 412                 #include "gen_irio_export.inl"
 413         }
 414         fputs("}\n", env->file);
 415 }
 416
 417 /** Exports the whole irp to the given file in a textual form. */
 418 void ir_export(const char *filename)
 419 {
 420         io_env_t env;
 421         int i, n_irgs = get_irp_n_irgs(), n_pseudoirgs = get_irp_n_pseudo_irgs();
 422
 423         env.file = fopen(filename, "wt");
 424         if(!env.file)
 425         {
 426                 perror(filename);
 427                 return;
 428         }
 429
 430         fputs("typegraph {\n", env.file);
 431
 432         type_walk(NULL, export_type_or_ent, &env);
 433         /* TODO: Visit frame types and "types for value params"? */
 434
 435         for(i = 0; i < n_irgs; i++)
 436         {
 437                 ir_graph *irg = get_irp_irg(i);
 438
 439                 fprintf(env.file, "}\n\nirg %ld {\n", get_entity_nr(get_irg_entity(irg)));
 440
 441                 env.ignoreblocks = 0;
 442                 irg_block_walk_graph(irg, NULL, export_node, &env);
 443
 444                 env.ignoreblocks = 1;
 445                 irg_walk_anchors(irg, NULL, export_node, &env);
 446         }
 447
 448         fputs("}\n\nconstirg {\n", env.file);
 449         walk_const_code(NULL, export_node, &env);
 450         fputs("}\n", env.file);
 451
 452         fclose(env.file);
 453 }
 454
 455 /** Exports the given irg to the given file. */
 456 void ir_export_irg(ir_graph *irg, const char *filename)
 457 {
 458         io_env_t env;
 459
 460         env.file = fopen(filename, "wt");
 461         if(!env.file)
 462         {
 463                 perror(filename);
 464                 return;
 465         }
 466
 467         fputs("typegraph {\n", env.file);
 468
 469         type_walk_irg(irg, NULL, export_type_or_ent, &env);
 470
 471         fprintf(env.file, "}\n\nirg %ld {\n", get_entity_nr(get_irg_entity(irg)));
 472
 473         env.ignoreblocks = 0;
 474         irg_block_walk_graph(irg, NULL, export_node, &env);
 475
 476         env.ignoreblocks = 1;
 477         irg_walk_anchors(irg, NULL, export_node, &env);
 478
 479         /* TODO: Only output needed constants */
 480         fputs("}\n\nconstirg {\n", env.file);
 481         walk_const_code(NULL, export_node, &env);
 482         fputs("}\n", env.file);
 483
 484         fclose(env.file);
 485 }
 486
 487 static int read_c(io_env_t *env)
 488 {
 489         int ch = fgetc(env->file);
 490         switch(ch)
 491         {
 492                 case '\t':
 493                         env->col += 4;
 494                         break;
 495
 496                 case '\n':
 497                         env->col = 0;
 498                         env->line++;
 499                         break;
 500
 501                 default:
 502                         env->col++;
 503                         break;
 504         }
 505         return ch;
 506 }
 507
 508 /** Returns the first non-whitespace character or EOF. **/
 509 static int skip_ws(io_env_t *env)
 510 {
 511         while(1)
 512         {
 513                 int ch = read_c(env);
 514                 switch(ch)
 515                 {
 516                         case ' ':
 517                         case '\t':
 518                         case '\n':
 519                         case '\r':
 520                                 break;
 521
 522                         default:
 523                                 return ch;
 524                 }
 525         }
 526 }
 527
 528 static void skip_to(io_env_t *env, char to_ch)
 529 {
 530         int ch;
 531         do
 532         {
 533                 ch = read_c(env);
 534         }
 535         while(ch != to_ch && ch != EOF);
 536 }
 537
 538 static int expect_char(io_env_t *env, char ch)
 539 {
 540         int curch = skip_ws(env);
 541         if(curch != ch)
 542         {
 543                 printf("Unexpected char '%c', expected '%c' in line %i:%i\n", curch, ch, env->line, env->col);
 544                 return 0;
 545         }
 546         return 1;
 547 }
 548
 549 #define EXPECT(c) if(expect_char(env, (c))) {} else return 0
 550 #define EXPECT_OR_EXIT(c) if(expect_char(env, (c))) {} else exit(1)
 551
 552 inline static const char *read_str_to(io_env_t *env, char *buf, size_t bufsize)
 553 {
 554         size_t i;
 555         for(i = 0; i < bufsize - 1; i++)
 556         {
 557                 int ch = read_c(env);
 558                 if(ch == EOF) break;
 559                 switch(ch)
 560                 {
 561                         case ' ':
 562                         case '\t':
 563                         case '\n':
 564                         case '\r':
 565                                 if(i != 0)
 566                                         goto endofword;
 567                                 i--;    // skip whitespace
 568                                 break;
 569
 570                         default:
 571                                 buf[i] = ch;
 572                                 break;
 573                 }
 574         }
 575 endofword:
 576         buf[i] = 0;
 577         return buf;
 578 }
 579
 580 static const char *read_str(io_env_t *env)
 581 {
 582         static char buf[1024];
 583         return read_str_to(env, buf, sizeof(buf));
 584 }
 585
 586 static const char *read_qstr_to(io_env_t *env, char *buf, size_t bufsize)
 587 {
 588         size_t i;
 589         EXPECT_OR_EXIT('\"');
 590         for(i = 0; i < bufsize - 1; i++)
 591         {
 592                 int ch = read_c(env);
 593                 if(ch == EOF)
 594                 {
 595                         printf("Unexpected end of quoted string!\n");
 596                         exit(1);
 597                 }
 598                 if(ch == '\"') break;
 599
 600                 buf[i] = ch;
 601         }
 602         if(i == bufsize - 1)
 603         {
 604                 printf("Quoted string too long!\n");
 605                 exit(1);
 606         }
 607         buf[i] = 0;
 608         return buf;
 609 }
 610
 611 static long read_long2(io_env_t *env, char **endptr)
 612 {
 613         static char buf[1024];
 614         return strtol(read_str_to(env, buf, sizeof(buf)), endptr, 0);
 615 }
 616
 617 static long read_long(io_env_t *env)
 618 {
 619         return read_long2(env, NULL);
 620 }
 621
 622 static ir_node *get_node_or_null(io_env_t *env, long nodenr)
 623 {
 624         ir_node *node = (ir_node *) get_id(env, nodenr);
 625         if(node && node->kind != k_ir_node)
 626         {
 627                 panic("Irn ID %ld collides with something else in line %i:%i\n", nodenr, env->line, env->col);
 628         }
 629         return node;
 630 }
 631
 632 static ir_node *get_node(io_env_t *env, long nodenr)
 633 {
 634         ir_node *node = get_node_or_null(env, nodenr);
 635         if(!node)
 636                 panic("Unknown node: %ld in line %i:%i\n", nodenr, env->line, env->col);
 637
 638         return node;
 639 }
 640
 641 static ir_node *get_node_or_dummy(io_env_t *env, long nodenr)
 642 {
 643         ir_node *node = get_node_or_null(env, nodenr);
 644         if(!node)
 645         {
 646                 node = new_Dummy(mode_X);
 647                 set_id(env, nodenr, node);
 648         }
 649         return node;
 650 }
 651
 652 static ir_type *get_type(io_env_t *env, long typenr)
 653 {
 654         ir_type *type = (ir_type *) get_id(env, typenr);
 655         if(!type)
 656         {
 657                 panic("Unknown type: %ld in line %i:%i\n", typenr, env->line, env->col);
 658         }
 659         else if(type->kind != k_type)
 660         {
 661                 panic("Type ID %ld collides with something else in line %i:%i\n", typenr, env->line, env->col);
 662         }
 663         return type;
 664 }
 665
 666 static ir_type *read_type(io_env_t *env)
 667 {
 668         return get_type(env, read_long(env));
 669 }
 670
 671 static ir_entity *get_entity(io_env_t *env, long entnr)
 672 {
 673         ir_entity *entity = (ir_entity *) get_id(env, entnr);
 674         if(!entity)
 675         {
 676                 printf("Unknown entity: %ld in line %i:%i\n", entnr, env->line, env->col);
 677                 exit(1);
 678         }
 679         else if(entity->kind != k_entity)
 680         {
 681                 panic("Entity ID %ld collides with something else in line %i:%i\n", entnr, env->line, env->col);
 682         }
 683         return entity;
 684 }
 685
 686 static ir_entity *read_entity(io_env_t *env)
 687 {
 688         return get_entity(env, read_long(env));
 689 }
 690
 691 static ir_mode *read_mode(io_env_t *env)
 692 {
 693         static char buf[128];
 694         int i, n;
 695
 696         read_str_to(env, buf, sizeof(buf));
 697
 698         n = get_irp_n_modes();
 699         for(i = 0; i < n; i++)
 700         {
 701                 ir_mode *mode = get_irp_mode(i);
 702                 if(!strcmp(buf, get_mode_name(mode)))
 703                         return mode;
 704         }
 705
 706         printf("Unknown mode \"%s\" in line %i:%i\n", buf, env->line, env->col);
 707         return mode_ANY;
 708 }
 709
 710 static const char *get_typetag_name(typetag_t typetag)
 711 {
 712         switch(typetag)
 713         {
 714                 case tt_iro:         return "opcode";
 715                 case tt_tpo:         return "type";
 716                 case tt_align:       return "align";
 717                 case tt_allocation:  return "allocation";
 718                 case tt_peculiarity: return "peculiarity";
 719                 case tt_pin_state:   return "pin state";
 720                 case tt_type_state:  return "type state";
 721                 case tt_variability: return "variability";
 722                 case tt_visibility:  return "visibility";
 723                 case tt_volatility:  return "volatility";
 724                 default: return "<UNKNOWN>";
 725         }
 726 }
 727
 728 /**
 729  * Read and decode an enum constant.
 730  */
 731 static unsigned read_enum(io_env_t *env, typetag_t typetag)
 732 {
 733         static char buf[128];
 734         unsigned code = symbol(read_str_to(env, buf, sizeof(buf)), typetag);
 735         if(code != SYMERROR)
 736                 return code;
 737
 738         printf("Invalid %s: \"%s\" in %i:%i\n", get_typetag_name(typetag), buf, env->line, env->col);
 739         return 0;
 740 }
 741
 742 #define read_align(env)       ((ir_align)       read_enum(env, tt_align))
 743 #define read_allocation(env)  ((ir_allocation)  read_enum(env, tt_allocation))
 744 #define read_peculiarity(env) ((ir_peculiarity) read_enum(env, tt_peculiarity))
 745 #define read_pin_state(env)   ((op_pin_state)   read_enum(env, tt_pin_state))
 746 #define read_type_state(env)  ((ir_type_state)  read_enum(env, tt_type_state))
 747 #define read_variability(env) ((ir_variability) read_enum(env, tt_variability))
 748 #define read_visibility(env)  ((ir_visibility)  read_enum(env, tt_visibility))
 749 #define read_volatility(env)  ((ir_volatility)  read_enum(env, tt_volatility))
 750
 751 static ir_cons_flags get_cons_flags(io_env_t *env)
 752 {
 753         ir_cons_flags flags = cons_none;
 754
 755         op_pin_state pinstate = read_pin_state(env);
 756         switch(pinstate)
 757         {
 758                 case op_pin_state_floats: flags |= cons_floats; break;
 759                 case op_pin_state_pinned: break;
 760                 default:
 761                         panic("Error in %i:%i: Invalid pinstate: %s", env->line, env->col, get_op_pin_state_name(pinstate));
 762         }
 763
 764         if(read_volatility(env) == volatility_is_volatile) flags |= cons_volatile;
 765         if(read_align(env) == align_non_aligned) flags |= cons_unaligned;
 766
 767         return flags;
 768 }
 769
 770 static tarval *read_tv(io_env_t *env)
 771 {
 772         static char buf[128];
 773         ir_mode *tvmode = read_mode(env);
 774         read_str_to(env, buf, sizeof(buf));
 775         return new_tarval_from_str(buf, strlen(buf), tvmode);
 776 }
 777
 778 /** Reads a type description and remembers it by its id. */
 779 static void import_type(io_env_t *env)
 780 {
 781         char           buf[1024];
 782         int            i;
 783         ir_type       *type;
 784         long           typenr = read_long(env);
 785         const char    *tpop   = read_str(env);
 786         const char    *name   = read_qstr_to(env, buf, sizeof(buf));
 787         unsigned       size   = (unsigned) read_long(env);
 788         unsigned       align  = (unsigned) read_long(env);
 789         ir_type_state  state  = read_type_state(env);
 790         ir_visibility  vis    = read_visibility(env);
 791
 792         ident         *id     = new_id_from_str(name);
 793
 794         switch(symbol(tpop, tt_tpo))
 795         {
 796                 case tpo_array:
 797                 {
 798                         int ndims = (int) read_long(env);
 799                         long elemtypenr = read_long(env);
 800                         ir_type *elemtype = get_type(env, elemtypenr);
 801
 802                         type = new_type_array(id, ndims, elemtype);
 803                         for(i = 0; i < ndims; i++)
 804                         {
 805                                 long lowerbound = read_long(env);
 806                                 long upperbound = read_long(env);
 807                                 set_array_bounds_int(type, i, lowerbound, upperbound);
 808                         }
 809                         set_type_size_bytes(type, size);
 810                         break;
 811                 }
 812
 813                 case tpo_class:
 814                         type = new_type_class(id);
 815                         set_type_size_bytes(type, size);
 816                         break;
 817
 818                 case tpo_method:
 819                 {
 820                         int nparams  = (int) read_long(env);
 821                         int nresults = (int) read_long(env);
 822
 823                         type = new_type_method(id, nparams, nresults);
 824
 825                         for(i = 0; i < nparams; i++)
 826                         {
 827                                 long     typenr = read_long(env);
 828                                 ir_type *paramtype = get_type(env, typenr);
 829
 830                                 set_method_param_type(type, i, paramtype);
 831                         }
 832                         for(i = 0; i < nresults; i++)
 833                         {
 834                                 long typenr = read_long(env);
 835                                 ir_type *restype = get_type(env, typenr);
 836
 837                                 set_method_res_type(type, i, restype);
 838                         }
 839                         break;
 840                 }
 841
 842                 case tpo_pointer:
 843                 {
 844                         ir_mode *mode = read_mode(env);
 845                         ir_type *pointsto = get_type(env, read_long(env));
 846                         type = new_type_pointer(id, pointsto, mode);
 847                         break;
 848                 }
 849
 850                 case tpo_primitive:
 851                 {
 852                         ir_mode *mode = read_mode(env);
 853                         type = new_type_primitive(id, mode);
 854                         break;
 855                 }
 856
 857                 case tpo_struct:
 858                         type = new_type_struct(id);
 859                         set_type_size_bytes(type, size);
 860                         break;
 861
 862                 case tpo_union:
 863                         type = new_type_union(id);
 864                         set_type_size_bytes(type, size);
 865                         break;
 866
 867                 case tpo_unknown:
 868                         return;   // ignore unknown type
 869
 870                 default:
 871                         if(typenr != 0)  // ignore global type
 872                                 printf("Unknown type kind: \"%s\" in line %i:%i\n", tpop, env->line, env->col);
 873                         skip_to(env, '\n');
 874                         return;
 875         }
 876
 877         set_type_alignment_bytes(type, align);
 878         set_type_visibility(type, vis);
 879
 880         if(state == layout_fixed)
 881                 ARR_APP1(ir_type *, env->fixedtypes, type);
 882
 883         set_id(env, typenr, type);
 884         printf("Insert type %s %ld\n", name, typenr);
 885 }
 886
 887 /** Reads an entity description and remembers it by its id. */
 888 static void import_entity(io_env_t *env)
 889 {
 890         char          buf[1024], buf2[1024];
 891         long          entnr       = read_long(env);
 892         const char   *name        = read_qstr_to(env, buf, sizeof(buf));
 893         const char   *ld_name     = read_qstr_to(env, buf, sizeof(buf2));
 894         long          typenr      = read_long(env);
 895         long          ownertypenr = read_long(env);
 896
 897         ir_type   *type      = get_type(env, typenr);
 898         ir_type   *ownertype = !ownertypenr ? get_glob_type() : get_type(env, ownertypenr);
 899         ir_entity *entity    = new_entity(ownertype, new_id_from_str(name), type);
 900
 901         if(*ld_name) set_entity_ld_ident(entity, new_id_from_str(ld_name));
 902         set_entity_offset     (entity, (int) read_long(env));
 903         set_entity_offset_bits_remainder(entity, (unsigned char) read_long(env));
 904         set_entity_allocation (entity, read_allocation(env));
 905         set_entity_visibility (entity, read_visibility(env));
 906         set_entity_variability(entity, read_variability(env));
 907         set_entity_peculiarity(entity, read_peculiarity(env));
 908         set_entity_volatility (entity, read_volatility(env));
 909
 910         if(get_entity_variability(entity) != variability_uninitialized
 911                 && get_entity_visibility(entity) != visibility_external_allocated)
 912         {
 913                 if(is_compound_entity(entity))
 914                 {
 915                         int i, n = (int) read_long(env);
 916                         for(i = 0; i < n; i++)
 917                         {
 918                                 ir_entity *member = get_entity(env, read_long(env));
 919                                 ir_node   *irn    = get_node_or_dummy(env, read_long(env));
 920                                 add_compound_ent_value(entity, irn, member);
 921                         }
 922                 }
 923                 else
 924                 {
 925                         ir_node *irn = get_node_or_dummy(env, read_long(env));
 926                         set_atomic_ent_value(entity, irn);
 927                 }
 928         }
 929
 930         set_id(env, entnr, entity);
 931         printf("Insert entity %s %ld\n", name, entnr);
 932 }
 933
 934 /** Parses the whole type graph. */
 935 static int parse_typegraph(io_env_t *env)
 936 {
 937         const char *kind;
 938         long curfpos;
 939
 940         EXPECT('{');
 941
 942         curfpos = ftell(env->file);
 943
 944         // parse all types first
 945         while(1)
 946         {
 947                 kind = read_str(env);
 948                 if(kind[0] == '}' && !kind[1]) break;
 949
 950                 if(!strcmp(kind, "type"))
 951                         import_type(env);
 952                 else
 953                         skip_to(env, '\n');
 954         }
 955
 956         // now parse rest
 957         fseek(env->file, curfpos, SEEK_SET);
 958         while(1)
 959         {
 960                 kind = read_str(env);
 961                 if(kind[0] == '}' && !kind[1]) break;
 962
 963                 if(!strcmp(kind, "type"))
 964                         skip_to(env, '\n');
 965                 else if(!strcmp(kind, "entity"))
 966                         import_entity(env);
 967                 else
 968                 {
 969                         printf("Type graph element not supported yet: \"%s\"\n", kind);
 970                         skip_to(env, '\n');
 971                 }
 972         }
 973         return 1;
 974 }
 975
 976 static int read_node_header(io_env_t *env, long *nodenr, long **preds, const char **nodename)
 977 {
 978         int numpreds;
 979         *nodename = read_str(env);
 980         if((*nodename)[0] == '}' && !(*nodename)[1]) return -1;  // end-of-graph
 981
 982         *nodenr = read_long(env);
 983
 984         ARR_RESIZE(ir_node *, *preds, 0);
 985
 986         EXPECT('[');
 987         for(numpreds = 0; !feof(env->file); numpreds++)
 988         {
 989                 char *endptr;
 990                 ARR_APP1(long, *preds, read_long2(env, &endptr));
 991                 if(*endptr == ']') break;
 992         }
 993         return numpreds;
 994 }
 995
 996 /** Parses an IRG. */
 997 static int parse_graph(io_env_t *env, ir_graph *irg)
 998 {
 999         long       *preds = NEW_ARR_F(long, 16);
1000         ir_node   **prednodes = NEW_ARR_F(ir_node *, 16);
1001         int         i, numpreds, ret = 1;
1002         long        nodenr;
1003         const char *nodename;
1004         ir_node    *node, *newnode;
1005
1006         current_ir_graph = irg;
1007
1008         EXPECT('{');
1009
1010         while(1)
1011         {
1012                 numpreds = read_node_header(env, &nodenr, &preds, &nodename);
1013                 if(numpreds == -1) break;  // end-of-graph
1014                 if(!numpreds)
1015                 {
1016                         printf("Node %s %ld is missing predecessors!", nodename, nodenr);
1017                         ret = 0;
1018                         break;
1019                 }
1020
1021                 ARR_RESIZE(ir_node *, prednodes, numpreds);
1022                 for(i = 0; i < numpreds - 1; i++)
1023                         prednodes[i] = get_node_or_dummy(env, preds[i + 1]);
1024
1025                 node = get_node_or_null(env, nodenr);
1026                 newnode = NULL;
1027
1028                 EXPECT('{');
1029
1030                 switch(symbol(nodename, tt_iro))
1031                 {
1032                         case iro_End:
1033                         {
1034                                 ir_node *newendblock = get_node(env, preds[0]);
1035                                 newnode = get_irg_end(current_ir_graph);
1036                                 exchange(get_nodes_block(newnode), newendblock);
1037                                 for(i = 0; i < numpreds - 1; i++)
1038                                         add_irn_n(newnode, prednodes[i]);
1039                                 break;
1040                         }
1041
1042                         case iro_Start:
1043                         {
1044                                 ir_node *newstartblock = get_node(env, preds[0]);
1045                                 newnode = get_irg_start(current_ir_graph);
1046                                 exchange(get_nodes_block(newnode), newstartblock);
1047                                 break;
1048                         }
1049
1050                         case iro_Block:
1051                         {
1052                                 if(preds[0] != nodenr)
1053                                 {
1054                                         printf("Invalid block: preds[0] != nodenr (%ld != %ld)\n",
1055                                                 preds[0], nodenr);
1056                                         ret = 0;
1057                                         goto endloop;
1058                                 }
1059
1060                                 newnode = new_Block(numpreds - 1, prednodes);
1061                                 break;
1062                         }
1063
1064                         case iro_Anchor:
1065                                 newnode = current_ir_graph->anchor;
1066                                 for(i = 0; i < numpreds - 1; i++)
1067                                         set_irn_n(newnode, i, prednodes[i]);
1068                                 set_irn_n(newnode, -1, get_node(env, preds[0]));
1069                                 break;
1070
1071                         case iro_SymConst:
1072                         {
1073                                 long entnr = read_long(env);
1074                                 union symconst_symbol sym;
1075                                 sym.entity_p = get_entity(env, entnr);
1076                                 newnode = new_SymConst(mode_P, sym, symconst_addr_ent);
1077                                 break;
1078                         }
1079
1080                         #include "gen_irio_import.inl"
1081
1082                         default:
1083                                 goto notsupported;
1084                 }
1085
1086                 EXPECT('}');
1087
1088                 if(!newnode)
1089                 {
1090 notsupported:
1091                         panic("Node type not supported yet: %s in line %i:%i\n", nodename, env->line, env->col);
1092                 }
1093
1094                 if(node)
1095                         exchange(node, newnode);
1096                 /* Always update hash entry to avoid more uses of id nodes */
1097                 set_id(env, nodenr, newnode);
1098                 //printf("Insert %s %ld\n", nodename, nodenr);
1099         }
1100
1101 endloop:
1102         DEL_ARR_F(preds);
1103         DEL_ARR_F(prednodes);
1104
1105         return ret;
1106 }
1107
1108 /** Imports an previously exported textual representation of an (maybe partial) irp */
1109 void ir_import(const char *filename)
1110 {
1111         int oldoptimize = get_optimize();
1112         firm_verification_t oldver = get_node_verification_mode();
1113         io_env_t ioenv;
1114         io_env_t *env = &ioenv;
1115         int i, n;
1116
1117         symtbl_init();
1118
1119         memset(env, 0, sizeof(*env));
1120         env->idset = new_set(id_cmp, 128);
1121         env->fixedtypes = NEW_ARR_F(ir_type *, 0);
1122
1123         env->file = fopen(filename, "rt");
1124         if(!env->file)
1125         {
1126                 perror(filename);
1127                 exit(1);
1128         }
1129
1130         set_optimize(0);
1131         do_node_verification(FIRM_VERIFICATION_OFF);
1132
1133         while(1)
1134         {
1135                 const char *str = read_str(env);
1136                 if(!*str) break;
1137                 if(!strcmp(str, "typegraph"))
1138                 {
1139                         if(!parse_typegraph(env)) break;
1140                 }
1141                 else if(!strcmp(str, "irg"))
1142                 {
1143                         ir_graph *irg = new_ir_graph(get_entity(env, read_long(env)), 0);
1144                         if(!parse_graph(env, irg)) break;
1145                 }
1146                 else if(!strcmp(str, "constirg"))
1147                 {
1148                         if(!parse_graph(env, get_const_code_irg())) break;
1149                 }
1150         }
1151
1152         n = ARR_LEN(env->fixedtypes);
1153         for(i = 0; i < n; i++)
1154                 set_type_state(env->fixedtypes[i], layout_fixed);
1155
1156         DEL_ARR_F(env->fixedtypes);
1157
1158         del_set(env->idset);
1159
1160         irp_finalize_cons();
1161
1162         do_node_verification(oldver);
1163         set_optimize(oldoptimize);
1164
1165         fclose(env->file);
1166 }