gnu/dist/gdb6/sim/ppc/tree.c

   1 /*  This file is part of the program psim.
   2
   3     Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19     */
  20
  21
  22 #ifndef _PARSE_C_
  23 #define _PARSE_C_
  24
  25 #include <stdio.h>
  26 #include <stdarg.h>
  27
  28 #include "basics.h"
  29
  30 #include "device.h"
  31 #include "tree.h"
  32
  33
  34 #ifdef HAVE_STDLIB_H
  35 #include <stdlib.h>
  36 #endif
  37
  38 #ifdef HAVE_STRING_H
  39 #include <string.h>
  40 #else
  41 #ifdef HAVE_STRINGS_H
  42 #include <strings.h>
  43 #endif
  44 #endif
  45
  46 #include <ctype.h>
  47
  48 #include "libiberty.h"
  49
  50 /* manipulate/lookup device names */
  51
  52 typedef struct _name_specifier {
  53   /* components in the full length name */
  54   char *path;
  55   char *property;
  56   char *value;
  57   /* current device */
  58   char *name;
  59   char *base;
  60   char *unit;
  61   char *args;
  62   /* previous device */
  63   char *last_name;
  64   char *last_base;
  65   char *last_unit;
  66   char *last_args;
  67   /* work area */
  68   char buf[1024];
  69 } name_specifier;
  70
  71
  72
  73 /* Given a device specifier, break it up into its main components:
  74    path (and if present) property name and property value. */
  75
  76 STATIC_INLINE_TREE\
  77 (int)
  78 split_device_specifier(device *current,
  79                        const char *device_specifier,
  80                        name_specifier *spec)
  81 {
  82   char *chp = NULL;
  83
  84   /* expand any leading alias if present */
  85   if (current != NULL
  86       && *device_specifier != '\0'
  87       && *device_specifier != '.'
  88       && *device_specifier != '/') {
  89     device *aliases = tree_find_device(current, "/aliases");
  90     char alias[32];
  91     int len = 0;
  92     while (device_specifier[len] != '\0'
  93            && device_specifier[len] != '/'
  94            && device_specifier[len] != ':'
  95            && !isspace(device_specifier[len])) {
  96       alias[len] = device_specifier[len];
  97       len++;
  98       if (len >= sizeof(alias))
  99         error("split_device_specifier: buffer overflow");
 100     }
 101     alias[len] = '\0';
 102     if (aliases != NULL
 103         && device_find_property(aliases, alias)) {
 104       strcpy(spec->buf, device_find_string_property(aliases, alias));
 105       strcat(spec->buf, device_specifier + len);
 106     }
 107     else {
 108       strcpy(spec->buf, device_specifier);
 109     }
 110   }
 111   else {
 112     strcpy(spec->buf, device_specifier);
 113   }
 114
 115   /* check no overflow */
 116   if (strlen(spec->buf) >= sizeof(spec->buf))
 117     error("split_device_specifier: buffer overflow\n");
 118
 119   /* strip leading spaces */
 120   chp = spec->buf;
 121   while (*chp != '\0' && isspace(*chp))
 122     chp++;
 123   if (*chp == '\0')
 124     return 0;
 125
 126   /* find the path and terminate it with null */
 127   spec->path = chp;
 128   while (*chp != '\0' && !isspace(*chp))
 129     chp++;
 130   if (*chp != '\0') {
 131     *chp = '\0';
 132     chp++;
 133   }
 134
 135   /* and any value */
 136   while (*chp != '\0' && isspace(*chp))
 137     chp++;
 138   spec->value = chp;
 139
 140   /* now go back and chop the property off of the path */
 141   if (spec->value[0] == '\0') {
 142     spec->property = NULL; /*not a property*/
 143     spec->value = NULL;
 144   }
 145   else if (spec->value[0] == '>'
 146            || spec->value[0] == '<') {
 147     /* an interrupt spec */
 148     spec->property = NULL;
 149   }
 150   else {
 151     chp = strrchr(spec->path, '/');
 152     if (chp == NULL) {
 153       spec->property = spec->path;
 154       spec->path = strchr(spec->property, '\0');
 155     }
 156     else {
 157       *chp = '\0';
 158       spec->property = chp+1;
 159     }
 160   }
 161
 162   /* and mark the rest as invalid */
 163   spec->name = NULL;
 164   spec->base = NULL;
 165   spec->unit = NULL;
 166   spec->args = NULL;
 167   spec->last_name = NULL;
 168   spec->last_base = NULL;
 169   spec->last_unit = NULL;
 170   spec->last_args = NULL;
 171
 172   return 1;
 173 }
 174
 175
 176 /* given a device specifier break it up into its main components -
 177    path and property name - assuming that the last `device' is a
 178    property name. */
 179
 180 STATIC_INLINE_DEVICE\
 181 (int)
 182 split_property_specifier(device *current,
 183                          const char *property_specifier,
 184                          name_specifier *spec)
 185 {
 186   if (split_device_specifier(current, property_specifier, spec)) {
 187     if (spec->property == NULL) {
 188       /* force the last name to be a property name */
 189       char *chp = strrchr(spec->path, '/');
 190       if (chp == NULL) {
 191         spec->property = spec->path;
 192         spec->path = strrchr(spec->property, '\0');;
 193       }
 194       else {
 195         *chp = '\0';
 196         spec->property = chp+1;
 197       }
 198     }
 199     return 1;
 200   }
 201   else
 202     return 0;
 203 }
 204
 205
 206 /* device the next device name and split it up, return 0 when no more
 207    names to device */
 208
 209 STATIC_INLINE_TREE\
 210 (int)
 211 split_device_name(name_specifier *spec)
 212 {
 213   char *chp;
 214   /* remember what came before */
 215   spec->last_name = spec->name;
 216   spec->last_base = spec->base;
 217   spec->last_unit = spec->unit;
 218   spec->last_args = spec->args;
 219   /* finished? */
 220   if (spec->path[0] == '\0') {
 221     spec->name = NULL;
 222     spec->base = NULL;
 223     spec->unit = NULL;
 224     spec->args = NULL;
 225     return 0;
 226   }
 227   /* break the current device spec from the path */
 228   spec->name = spec->path;
 229   chp = strchr(spec->name, '/');
 230   if (chp == NULL)
 231     spec->path = strchr(spec->name, '\0');
 232   else {
 233     spec->path = chp+1;
 234     *chp = '\0';
 235   }
 236   /* break out the base */
 237   if (spec->name[0] == '(') {
 238     chp = strchr(spec->name, ')');
 239     if (chp == NULL) {
 240       spec->base = spec->name;
 241     }
 242     else {
 243       *chp = '\0';
 244       spec->base = spec->name + 1;
 245       spec->name = chp + 1;
 246     }
 247   }
 248   else {
 249     spec->base = spec->name;
 250   }
 251   /* now break out the unit */
 252   chp = strchr(spec->name, '@');
 253   if (chp == NULL) {
 254     spec->unit = NULL;
 255     chp = spec->name;
 256   }
 257   else {
 258     *chp = '\0';
 259     chp += 1;
 260     spec->unit = chp;
 261   }
 262   /* finally any args */
 263   chp = strchr(chp, ':');
 264   if (chp == NULL)
 265     spec->args = NULL;
 266   else {
 267     *chp = '\0';
 268     spec->args = chp+1;
 269   }
 270   return 1;
 271 }
 272
 273
 274 /* device the value, returning the next non-space token */
 275
 276 STATIC_INLINE_TREE\
 277 (char *)
 278 split_value(name_specifier *spec)
 279 {
 280   char *token;
 281   if (spec->value == NULL)
 282     return NULL;
 283   /* skip leading white space */
 284   while (isspace(spec->value[0]))
 285     spec->value++;
 286   if (spec->value[0] == '\0') {
 287     spec->value = NULL;
 288     return NULL;
 289   }
 290   token = spec->value;
 291   /* find trailing space */
 292   while (spec->value[0] != '\0' && !isspace(spec->value[0]))
 293     spec->value++;
 294   /* chop this value out */
 295   if (spec->value[0] != '\0') {
 296     spec->value[0] = '\0';
 297     spec->value++;
 298   }
 299   return token;
 300 }
 301
 302
 303
 304 /* traverse the path specified by spec starting at current */
 305
 306 STATIC_INLINE_TREE\
 307 (device *)
 308 split_find_device(device *current,
 309                   name_specifier *spec)
 310 {
 311   /* strip off (and process) any leading ., .., ./ and / */
 312   while (1) {
 313     if (strncmp(spec->path, "/", strlen("/")) == 0) {
 314       /* cd /... */
 315       while (current != NULL && device_parent(current) != NULL)
 316         current = device_parent(current);
 317       spec->path += strlen("/");
 318     }
 319     else if (strncmp(spec->path, "./", strlen("./")) == 0) {
 320       /* cd ./... */
 321       current = current;
 322       spec->path += strlen("./");
 323     }
 324     else if (strncmp(spec->path, "../", strlen("../")) == 0) {
 325       /* cd ../... */
 326       if (current != NULL && device_parent(current) != NULL)
 327         current = device_parent(current);
 328       spec->path += strlen("../");
 329     }
 330     else if (strcmp(spec->path, ".") == 0) {
 331       /* cd . */
 332       current = current;
 333       spec->path += strlen(".");
 334     }
 335     else if (strcmp(spec->path, "..") == 0) {
 336       /* cd . */
 337       if (current != NULL && device_parent(current) != NULL)
 338         current = device_parent(current);
 339       spec->path += strlen("..");
 340     }
 341     else
 342       break;
 343   }
 344
 345   /* now go through the path proper */
 346
 347   if (current == NULL) {
 348     split_device_name(spec);
 349     return NULL;
 350   }
 351
 352   while (split_device_name(spec)) {
 353     device *child;
 354     for (child = device_child(current);
 355          child != NULL; child = device_sibling(child)) {
 356       if (strcmp(spec->name, device_name(child)) == 0) {
 357         if (spec->unit == NULL)
 358           break;
 359         else {
 360           device_unit phys;
 361           device_decode_unit(current, spec->unit, &phys);
 362           if (memcmp(&phys, device_unit_address(child),
 363                      sizeof(device_unit)) == 0)
 364             break;
 365         }
 366       }
 367     }
 368     if (child == NULL)
 369       return current; /* search failed */
 370     current = child;
 371   }
 372
 373   return current;
 374 }
 375
 376
 377 STATIC_INLINE_TREE\
 378 (device *)
 379 split_fill_path(device *current,
 380                 const char *device_specifier,
 381                 name_specifier *spec)
 382 {
 383   /* break it up */
 384   if (!split_device_specifier(current, device_specifier, spec))
 385     device_error(current, "error parsing %s\n", device_specifier);
 386
 387   /* fill our tree with its contents */
 388   current = split_find_device(current, spec);
 389
 390   /* add any additional devices as needed */
 391   if (spec->name != NULL) {
 392     do {
 393       current = device_create(current, spec->base, spec->name,
 394                               spec->unit, spec->args);
 395     } while (split_device_name(spec));
 396   }
 397
 398   return current;
 399 }
 400
 401
 402 INLINE_TREE\
 403 (void)
 404 tree_init(device *root,
 405           psim *system)
 406 {
 407   TRACE(trace_device_tree, ("tree_init(root=0x%lx, system=0x%lx)\n",
 408                             (long)root,
 409                             (long)system));
 410   /* remove the old, rebuild the new */
 411   tree_traverse(root, device_clean, NULL, system);
 412   tree_traverse(root, device_init_static_properties, NULL, system);
 413   tree_traverse(root, device_init_address, NULL, system);
 414   tree_traverse(root, device_init_runtime_properties, NULL, system);
 415   tree_traverse(root, device_init_data, NULL, system);
 416 }
 417
 418
 419 \f
 420 /* <non-white-space> */
 421
 422 STATIC_INLINE_TREE\
 423 (const char *)
 424 skip_token(const char *chp)
 425 {
 426   while (!isspace(*chp) && *chp != '\0')
 427     chp++;
 428   while (isspace(*chp) && *chp != '\0')
 429     chp++;
 430   return chp;
 431 }
 432
 433
 434 /* count the number of entries */
 435
 436 STATIC_INLINE_TREE\
 437 (int)
 438 count_entries(device *current,
 439               const char *property_name,
 440               const char *property_value,
 441               int modulo)
 442 {
 443   const char *chp = property_value;
 444   int nr_entries = 0;
 445   while (*chp != '\0') {
 446     nr_entries += 1;
 447     chp = skip_token(chp);
 448   }
 449   if ((nr_entries % modulo) != 0) {
 450     device_error(current, "incorrect number of entries for %s property %s, should be multiple of %d",
 451                  property_name, property_value, modulo);
 452   }
 453   return nr_entries / modulo;
 454 }
 455
 456
 457
 458 /* parse: <address> ::= <token> ; device dependant */
 459
 460 STATIC_INLINE_TREE\
 461 (const char *)
 462 parse_address(device *current,
 463               device *bus,
 464               const char *chp,
 465               device_unit *address)
 466 {
 467   ASSERT(device_nr_address_cells(bus) > 0);
 468   if (device_decode_unit(bus, chp, address) < 0)
 469     device_error(current, "invalid unit address in %s", chp);
 470   return skip_token(chp);
 471 }
 472
 473
 474 /* parse: <size> ::= <number> { "," <number> } ; */
 475
 476 STATIC_INLINE_TREE\
 477 (const char *)
 478 parse_size(device *current,
 479            device *bus,
 480            const char *chp,
 481            device_unit *size)
 482 {
 483   int i;
 484   int nr;
 485   const char *curr = chp;
 486   memset(size, 0, sizeof(*size));
 487   /* parse the numeric list */
 488   size->nr_cells = device_nr_size_cells(bus);
 489   nr = 0;
 490   ASSERT(size->nr_cells > 0);
 491   while (1) {
 492     char *next;
 493     size->cells[nr] = strtoul(curr, &next, 0);
 494     if (curr == next)
 495       device_error(current, "Problem parsing <size> %s", chp);
 496     nr += 1;
 497     if (next[0] != ',')
 498       break;
 499     if (nr == size->nr_cells)
 500       device_error(current, "Too many values in <size> %s", chp);
 501     curr = next + 1;
 502   }
 503   ASSERT(nr > 0 && nr <= size->nr_cells);
 504   /* right align the numbers */
 505   for (i = 1; i <= size->nr_cells; i++) {
 506     if (i <= nr)
 507       size->cells[size->nr_cells - i] = size->cells[nr - i];
 508     else
 509       size->cells[size->nr_cells - i] = 0;
 510   }
 511   return skip_token(chp);
 512 }
 513
 514
 515 /* parse: <reg> ::= { <address> <size> } ; */
 516
 517 STATIC_INLINE_TREE\
 518 (void)
 519 parse_reg_property(device *current,
 520                    const char *property_name,
 521                    const char *property_value)
 522 {
 523   int nr_regs;
 524   int reg_nr;
 525   reg_property_spec *regs;
 526   const char *chp;
 527   device *bus = device_parent(current);
 528
 529   /* determine the number of reg entries by counting tokens */
 530   nr_regs = count_entries(current, property_name, property_value,
 531                           1 + (device_nr_size_cells(bus) > 0));
 532
 533   /* create working space */
 534   regs = zalloc(nr_regs * sizeof(*regs));
 535
 536   /* fill it in */
 537   chp = property_value;
 538   for (reg_nr = 0; reg_nr < nr_regs; reg_nr++) {
 539     chp = parse_address(current, bus, chp, &regs[reg_nr].address);
 540     if (device_nr_size_cells(bus) > 0)
 541       chp = parse_size(current, bus, chp, &regs[reg_nr].size);
 542     else
 543       memset(&regs[reg_nr].size, 0, sizeof (&regs[reg_nr].size));
 544   }
 545
 546   /* create it */
 547   device_add_reg_array_property(current, property_name,
 548                                 regs, nr_regs);
 549
 550   zfree(regs);
 551 }
 552
 553
 554 /* { <child-address> <parent-address> <child-size> }* */
 555
 556 STATIC_INLINE_TREE\
 557 (void)
 558 parse_ranges_property(device *current,
 559                       const char *property_name,
 560                       const char *property_value)
 561 {
 562   int nr_ranges;
 563   int range_nr;
 564   range_property_spec *ranges;
 565   const char *chp;
 566
 567   /* determine the number of ranges specified */
 568   nr_ranges = count_entries(current, property_name, property_value, 3);
 569
 570   /* create a property of that size */
 571   ranges = zalloc(nr_ranges * sizeof(*ranges));
 572
 573   /* fill it in */
 574   chp = property_value;
 575   for (range_nr = 0; range_nr < nr_ranges; range_nr++) {
 576     chp = parse_address(current, current,
 577                         chp, &ranges[range_nr].child_address);
 578     chp = parse_address(current, device_parent(current),
 579                         chp, &ranges[range_nr].parent_address);
 580     chp = parse_size(current, current,
 581                      chp, &ranges[range_nr].size);
 582   }
 583
 584   /* create it */
 585   device_add_range_array_property(current, property_name, ranges, nr_ranges);
 586
 587   zfree(ranges);
 588 }
 589
 590
 591 /* <integer> ... */
 592
 593 STATIC_INLINE_TREE\
 594 (void)
 595 parse_integer_property(device *current,
 596                        const char *property_name,
 597                        const char *property_value)
 598 {
 599   int nr_entries;
 600   unsigned_cell words[1024];
 601   /* integer or integer array? */
 602   nr_entries = 0;
 603   while (1) {
 604     char *end;
 605     words[nr_entries] = strtoul(property_value, &end, 0);
 606     if (property_value == end)
 607       break;
 608     nr_entries += 1;
 609     if (nr_entries * sizeof(words[0]) >= sizeof(words))
 610       device_error(current, "buffer overflow");
 611     property_value = end;
 612   }
 613   if (nr_entries == 0)
 614     device_error(current, "error parsing integer property %s (%s)",
 615                  property_name, property_value);
 616   else if (nr_entries == 1)
 617     device_add_integer_property(current, property_name, words[0]);
 618   else {
 619     int i;
 620     for (i = 0; i < nr_entries; i++) {
 621       H2BE(words[i]);
 622     }
 623     /* perhaps integer array property is better */
 624     device_add_array_property(current, property_name, words,
 625                               sizeof(words[0]) * nr_entries);
 626   }
 627 }
 628
 629 /* PROPERTY_VALUE is a raw property value.  Quote it as required by
 630    parse_string_property.  It is the caller's responsibility to free
 631    the memory returned.  */
 632
 633 EXTERN_TREE\
 634 (char *)
 635 tree_quote_property(const char *property_value)
 636 {
 637   char *p;
 638   char *ret;
 639   const char *chp;
 640   int quotees;
 641
 642   /* Count characters needing quotes in PROPERTY_VALUE.  */
 643   quotees = 0;
 644   for (chp = property_value; *chp; ++chp)
 645     if (*chp == '\\' || *chp == '"')
 646       ++quotees;
 647
 648   ret = (char *) xmalloc (strlen (property_value)
 649                           + 2 /* quotes */
 650                           + quotees
 651                           + 1 /* terminator */);
 652
 653   p = ret;
 654   /* Add the opening quote.  */
 655   *p++ = '"';
 656   /* Copy the value.  */
 657   for (chp = property_value; *chp; ++chp)
 658     if (*chp == '\\' || *chp == '"')
 659       {
 660         /* Quote this character.  */
 661         *p++ = '\\';
 662         *p++ = *chp;
 663       }
 664     else
 665       *p++ = *chp;
 666   /* Add the closing quote.  */
 667   *p++ = '"';
 668   /* Terminate the string.  */
 669   *p++ = '\0';
 670
 671   return ret;
 672 }
 673
 674 /* <string> ... */
 675
 676 STATIC_INLINE_TREE\
 677 (void)
 678 parse_string_property(device *current,
 679                       const char *property_name,
 680                       const char *property_value)
 681 {
 682   char **strings;
 683   const char *chp;
 684   int nr_strings;
 685   int approx_nr_strings;
 686
 687   /* get an estimate as to the number of strings by counting double
 688      quotes */
 689   approx_nr_strings = 2;
 690   for (chp = property_value; *chp; chp++) {
 691     if (*chp == '"')
 692       approx_nr_strings++;
 693   }
 694   approx_nr_strings = (approx_nr_strings) / 2;
 695
 696   /* create a string buffer for that many (plus a null) */
 697   strings = (char**)zalloc((approx_nr_strings + 1) * sizeof(char*));
 698
 699   /* now find all the strings */
 700   chp = property_value;
 701   nr_strings = 0;
 702   while (1) {
 703
 704     /* skip leading space */
 705     while (*chp != '\0' && isspace(*chp))
 706       chp += 1;
 707     if (*chp == '\0')
 708       break;
 709
 710     /* copy it in */
 711     if (*chp == '"') {
 712       /* a quoted string - watch for '\' et.al. */
 713       /* estimate the size and allocate space for it */
 714       int pos;
 715       chp++;
 716       pos = 0;
 717       while (chp[pos] != '\0' && chp[pos] != '"') {
 718         if (chp[pos] == '\\' && chp[pos+1] != '\0')
 719           pos += 2;
 720         else
 721           pos += 1;
 722       }
 723       strings[nr_strings] = zalloc(pos + 1);
 724       /* copy the string over */
 725       pos = 0;
 726       while (*chp != '\0' && *chp != '"') {
 727         if (*chp == '\\' && *(chp+1) != '\0') {
 728           strings[nr_strings][pos] = *(chp+1);
 729           chp += 2;
 730           pos++;
 731         }
 732         else {
 733           strings[nr_strings][pos] = *chp;
 734           chp += 1;
 735           pos++;
 736         }
 737       }
 738       if (*chp != '\0')
 739         chp++;
 740       strings[nr_strings][pos] = '\0';
 741     }
 742     else {
 743       /* copy over a single unquoted token */
 744       int len = 0;
 745       while (chp[len] != '\0' && !isspace(chp[len]))
 746         len++;
 747       strings[nr_strings] = zalloc(len + 1);
 748       strncpy(strings[nr_strings], chp, len);
 749       strings[nr_strings][len] = '\0';
 750       chp += len;
 751     }
 752     nr_strings++;
 753     if (nr_strings > approx_nr_strings)
 754       device_error(current, "String property %s badly formatted",
 755                    property_name);
 756   }
 757   ASSERT(strings[nr_strings] == NULL); /* from zalloc */
 758
 759   /* install it */
 760   if (nr_strings == 0)
 761     device_add_string_property(current, property_name, "");
 762   else if (nr_strings == 1)
 763     device_add_string_property(current, property_name, strings[0]);
 764   else {
 765     const char **specs = (const char**)strings; /* stop a bogus error */
 766     device_add_string_array_property(current, property_name,
 767                                      specs, nr_strings);
 768   }
 769
 770   /* flush the created string */
 771   while (nr_strings > 0) {
 772     nr_strings--;
 773     zfree(strings[nr_strings]);
 774   }
 775   zfree(strings);
 776 }
 777
 778
 779 /* <path-to-ihandle-device> */
 780
 781 STATIC_INLINE_TREE\
 782 (void)
 783 parse_ihandle_property(device *current,
 784                        const char *property,
 785                        const char *value)
 786 {
 787   ihandle_runtime_property_spec ihandle;
 788
 789   /* pass the full path */
 790   ihandle.full_path = value;
 791
 792   /* save this ready for the ihandle create */
 793   device_add_ihandle_runtime_property(current, property,
 794                                       &ihandle);
 795 }
 796
 797
 798
 799 EXTERN_TREE\
 800 (device *)
 801 tree_parse(device *current,
 802            const char *fmt,
 803            ...)
 804 {
 805   char device_specifier[1024];
 806   name_specifier spec;
 807
 808   /* format the path */
 809   {
 810     va_list ap;
 811     va_start(ap, fmt);
 812     vsprintf(device_specifier, fmt, ap);
 813     va_end(ap);
 814     if (strlen(device_specifier) >= sizeof(device_specifier))
 815       error("device_tree_add_deviced: buffer overflow\n");
 816   }
 817
 818   /* construct the tree down to the final device */
 819   current = split_fill_path(current, device_specifier, &spec);
 820
 821   /* is there an interrupt spec */
 822   if (spec.property == NULL
 823       && spec.value != NULL) {
 824     char *op = split_value(&spec);
 825     switch (op[0]) {
 826     case '>':
 827       {
 828         char *my_port_name = split_value(&spec);
 829         int my_port;
 830         char *dest_port_name = split_value(&spec);
 831         int dest_port;
 832         name_specifier dest_spec;
 833         char *dest_device_name = split_value(&spec);
 834         device *dest;
 835         /* find my name */
 836         my_port = device_interrupt_decode(current, my_port_name,
 837                                           output_port);
 838         /* find the dest device and port */
 839         dest = split_fill_path(current, dest_device_name, &dest_spec);
 840         dest_port = device_interrupt_decode(dest, dest_port_name,
 841                                             input_port);
 842         /* connect the two */
 843         device_interrupt_attach(current,
 844                                 my_port,
 845                                 dest,
 846                                 dest_port,
 847                                 permenant_object);
 848       }
 849       break;
 850     default:
 851       device_error(current, "unreconised interrupt spec %s\n", spec.value);
 852       break;
 853     }
 854   }
 855
 856   /* is there a property */
 857   if (spec.property != NULL) {
 858     if (strcmp(spec.value, "true") == 0)
 859       device_add_boolean_property(current, spec.property, 1);
 860     else if (strcmp(spec.value, "false") == 0)
 861       device_add_boolean_property(current, spec.property, 0);
 862     else {
 863       const device_property *property;
 864       switch (spec.value[0]) {
 865       case '*':
 866         parse_ihandle_property(current, spec.property, spec.value + 1);
 867         break;
 868       case '[':
 869         {
 870           unsigned8 words[1024];
 871           char *curr = spec.value + 1;
 872           int nr_words = 0;
 873           while (1) {
 874             char *next;
 875             words[nr_words] = H2BE_1(strtoul(curr, &next, 0));
 876             if (curr == next)
 877               break;
 878             curr = next;
 879             nr_words += 1;
 880           }
 881           device_add_array_property(current, spec.property,
 882                                     words, sizeof(words[0]) * nr_words);
 883         }
 884         break;
 885       case '"':
 886         parse_string_property(current, spec.property, spec.value);
 887         break;
 888       case '!':
 889         spec.value++;
 890         property = tree_find_property(current, spec.value);
 891         if (property == NULL)
 892           device_error(current, "property %s not found\n", spec.value);
 893         device_add_duplicate_property(current,
 894                                       spec.property,
 895                                       property);
 896         break;
 897       default:
 898         if (strcmp(spec.property, "reg") == 0
 899             || strcmp(spec.property, "assigned-addresses") == 0
 900             || strcmp(spec.property, "alternate-reg") == 0){
 901           parse_reg_property(current, spec.property, spec.value);
 902         }
 903         else if (strcmp(spec.property, "ranges") == 0) {
 904           parse_ranges_property(current, spec.property, spec.value);
 905         }
 906         else if (isdigit(spec.value[0])
 907                  || (spec.value[0] == '-' && isdigit(spec.value[1]))
 908                  || (spec.value[0] == '+' && isdigit(spec.value[1]))) {
 909           parse_integer_property(current, spec.property, spec.value);
 910         }
 911         else
 912           parse_string_property(current, spec.property, spec.value);
 913         break;
 914       }
 915     }
 916   }
 917   return current;
 918 }
 919
 920
 921 INLINE_TREE\
 922 (void)
 923 tree_traverse(device *root,
 924               tree_traverse_function *prefix,
 925               tree_traverse_function *postfix,
 926               void *data)
 927 {
 928   device *child;
 929   if (prefix != NULL)
 930     prefix(root, data);
 931   for (child = device_child(root);
 932        child != NULL;
 933        child = device_sibling(child)) {
 934     tree_traverse(child, prefix, postfix, data);
 935   }
 936   if (postfix != NULL)
 937     postfix(root, data);
 938 }
 939
 940
 941 STATIC_INLINE_TREE\
 942 (void)
 943 print_address(device *bus,
 944               const device_unit *phys)
 945 {
 946   char unit[32];
 947   device_encode_unit(bus, phys, unit, sizeof(unit));
 948   printf_filtered(" %s", unit);
 949 }
 950
 951 STATIC_INLINE_TREE\
 952 (void)
 953 print_size(device *bus,
 954            const device_unit *size)
 955 {
 956   int i;
 957   for (i = 0; i < size->nr_cells; i++)
 958     if (size->cells[i] != 0)
 959       break;
 960   if (i < size->nr_cells) {
 961     printf_filtered(" 0x%lx", (unsigned long)size->cells[i]);
 962     i++;
 963     for (; i < size->nr_cells; i++)
 964       printf_filtered(",0x%lx", (unsigned long)size->cells[i]);
 965   }
 966   else
 967     printf_filtered(" 0");
 968 }
 969
 970 STATIC_INLINE_TREE\
 971 (void)
 972 print_reg_property(device *me,
 973                    const device_property *property)
 974 {
 975   int reg_nr;
 976   reg_property_spec reg;
 977   for (reg_nr = 0;
 978        device_find_reg_array_property(me, property->name, reg_nr, &reg);
 979        reg_nr++) {
 980     print_address(device_parent(me), &reg.address);
 981     print_size(me, &reg.size);
 982   }
 983 }
 984
 985 STATIC_INLINE_TREE\
 986 (void)
 987 print_ranges_property(device *me,
 988                       const device_property *property)
 989 {
 990   int range_nr;
 991   range_property_spec range;
 992   for (range_nr = 0;
 993        device_find_range_array_property(me, property->name, range_nr, &range);
 994        range_nr++) {
 995     print_address(me, &range.child_address);
 996     print_address(device_parent(me), &range.parent_address);
 997     print_size(me, &range.size);
 998   }
 999 }
1000
1001 STATIC_INLINE_TREE\
1002 (void)
1003 print_string(const char *string)
1004 {
1005   printf_filtered(" \"");
1006   while (*string != '\0') {
1007     switch (*string) {
1008     case '"':
1009       printf_filtered("\\\"");
1010       break;
1011     case '\\':
1012       printf_filtered("\\\\");
1013       break;
1014     default:
1015       printf_filtered("%c", *string);
1016       break;
1017     }
1018     string++;
1019   }
1020   printf_filtered("\"");
1021 }
1022
1023 STATIC_INLINE_TREE\
1024 (void)
1025 print_string_array_property(device *me,
1026                             const device_property *property)
1027 {
1028   int nr;
1029   string_property_spec string;
1030   for (nr = 0;
1031        device_find_string_array_property(me, property->name, nr, &string);
1032        nr++) {
1033     print_string(string);
1034   }
1035 }
1036
1037 STATIC_INLINE_TREE\
1038 (void)
1039 print_properties(device *me)
1040 {
1041   const device_property *property;
1042   for (property = device_find_property(me, NULL);
1043        property != NULL;
1044        property = device_next_property(property)) {
1045     printf_filtered("%s/%s", device_path(me), property->name);
1046     if (property->original != NULL) {
1047       printf_filtered(" !");
1048       printf_filtered("%s/%s",
1049                       device_path(property->original->owner),
1050                       property->original->name);
1051     }
1052     else {
1053       switch (property->type) {
1054       case array_property:
1055         if ((property->sizeof_array % sizeof(signed_cell)) == 0) {
1056           unsigned_cell *w = (unsigned_cell*)property->array;
1057           int cell_nr;
1058           for (cell_nr = 0;
1059                cell_nr < (property->sizeof_array / sizeof(unsigned_cell));
1060                cell_nr++) {
1061             printf_filtered(" 0x%lx", (unsigned long)BE2H_cell(w[cell_nr]));
1062           }
1063         }
1064         else {
1065           unsigned8 *w = (unsigned8*)property->array;
1066           printf_filtered(" [");
1067           while ((char*)w - (char*)property->array < property->sizeof_array) {
1068             printf_filtered(" 0x%2x", BE2H_1(*w));
1069             w++;
1070           }
1071         }
1072         break;
1073       case boolean_property:
1074         {
1075           int b = device_find_boolean_property(me, property->name);
1076           printf_filtered(" %s", b ? "true"  : "false");
1077         }
1078         break;
1079       case ihandle_property:
1080         {
1081           if (property->array != NULL) {
1082             device_instance *instance = device_find_ihandle_property(me, property->name);
1083             printf_filtered(" *%s", device_instance_path(instance));
1084           }
1085           else {
1086             /* not yet initialized, ask the device for the path */
1087             ihandle_runtime_property_spec spec;
1088             device_find_ihandle_runtime_property(me, property->name, &spec);
1089             printf_filtered(" *%s", spec.full_path);
1090           }
1091         }
1092         break;
1093       case integer_property:
1094         {
1095           unsigned_word w = device_find_integer_property(me, property->name);
1096           printf_filtered(" 0x%lx", (unsigned long)w);
1097         }
1098         break;
1099       case range_array_property:
1100         print_ranges_property(me, property);
1101         break;
1102       case reg_array_property:
1103         print_reg_property(me, property);
1104         break;
1105       case string_property:
1106         {
1107           const char *s = device_find_string_property(me, property->name);
1108           print_string(s);
1109         }
1110         break;
1111       case string_array_property:
1112         print_string_array_property(me, property);
1113         break;
1114       }
1115     }
1116     printf_filtered("\n");
1117   }
1118 }
1119
1120 STATIC_INLINE_TREE\
1121 (void)
1122 print_interrupts(device *me,
1123                  int my_port,
1124                  device *dest,
1125                  int dest_port,
1126                  void *ignore_or_null)
1127 {
1128   char src[32];
1129   char dst[32];
1130   device_interrupt_encode(me, my_port, src, sizeof(src), output_port);
1131   device_interrupt_encode(dest, dest_port, dst, sizeof(dst), input_port);
1132   printf_filtered("%s > %s %s %s\n",
1133                   device_path(me),
1134                   src, dst,
1135                   device_path(dest));
1136 }
1137
1138 STATIC_INLINE_TREE\
1139 (void)
1140 print_device(device *me,
1141              void *ignore_or_null)
1142 {
1143   printf_filtered("%s\n", device_path(me));
1144   print_properties(me);
1145   device_interrupt_traverse(me, print_interrupts, NULL);
1146 }
1147
1148 INLINE_TREE\
1149 (void)
1150 tree_print(device *root)
1151 {
1152   tree_traverse(root,
1153                 print_device, NULL,
1154                 NULL);
1155 }
1156
1157
1158 INLINE_TREE\
1159 (void)
1160 tree_usage(int verbose)
1161 {
1162   if (verbose == 1) {
1163     printf_filtered("\n");
1164     printf_filtered("A device/property specifier has the form:\n");
1165     printf_filtered("\n");
1166     printf_filtered("  /path/to/a/device [ property-value ]\n");
1167     printf_filtered("\n");
1168     printf_filtered("and a possible device is\n");
1169     printf_filtered("\n");
1170   }
1171   if (verbose > 1) {
1172     printf_filtered("\n");
1173     printf_filtered("A device/property specifier (<spec>) has the format:\n");
1174     printf_filtered("\n");
1175     printf_filtered("  <spec> ::= <path> [ <value> ] ;\n");
1176     printf_filtered("  <path> ::= { <prefix> } { <node> \"/\" } <node> ;\n");
1177     printf_filtered("  <prefix> ::= ( | \"/\" | \"../\" | \"./\" ) ;\n");
1178     printf_filtered("  <node> ::= <name> [ \"@\" <unit> ] [ \":\" <args> ] ;\n");
1179     printf_filtered("  <unit> ::= <number> { \",\" <number> } ;\n");
1180     printf_filtered("\n");
1181     printf_filtered("Where:\n");
1182     printf_filtered("\n");
1183     printf_filtered("  <name>  is the name of a device (list below)\n");
1184     printf_filtered("  <unit>  is the unit-address relative to the parent bus\n");
1185     printf_filtered("  <args>  additional arguments used when creating the device\n");
1186     printf_filtered("  <value> ::= ( <number> # integer property\n");
1187     printf_filtered("              | \"[\" { <number> } # array property (byte)\n");
1188     printf_filtered("              | \"{\" { <number> } # array property (cell)\n");
1189     printf_filtered("              | [ \"true\" | \"false\" ] # boolean property\n");
1190     printf_filtered("              | \"*\" <path> # ihandle property\n");
1191     printf_filtered("              | \"!\" <path> # copy property\n");
1192     printf_filtered("              | \">\" [ <number> ] <path> # attach interrupt\n");
1193     printf_filtered("              | \"<\" <path> # attach child interrupt\n");
1194     printf_filtered("              | \"\\\"\" <text> # string property\n");
1195     printf_filtered("              | <text> # string property\n");
1196     printf_filtered("              ) ;\n");
1197     printf_filtered("\n");
1198     printf_filtered("And the following are valid device names:\n");
1199     printf_filtered("\n");
1200   }
1201 }
1202
1203
1204
1205 INLINE_TREE\
1206 (device_instance *)
1207 tree_instance(device *root,
1208               const char *device_specifier)
1209 {
1210   /* find the device node */
1211   device *me;
1212   name_specifier spec;
1213   if (!split_device_specifier(root, device_specifier, &spec))
1214     return NULL;
1215   me = split_find_device(root, &spec);
1216   if (spec.name != NULL)
1217     return NULL;
1218   /* create the instance */
1219   return device_create_instance(me, device_specifier, spec.last_args);
1220 }
1221
1222
1223 INLINE_TREE\
1224 (device *)
1225 tree_find_device(device *root,
1226                  const char *path_to_device)
1227 {
1228   device *node;
1229   name_specifier spec;
1230
1231   /* parse the path */
1232   split_device_specifier(root, path_to_device, &spec);
1233   if (spec.value != NULL)
1234     return NULL; /* something wierd */
1235
1236   /* now find it */
1237   node = split_find_device(root, &spec);
1238   if (spec.name != NULL)
1239     return NULL; /* not a leaf */
1240
1241   return node;
1242 }
1243
1244
1245 INLINE_TREE\
1246 (const device_property *)
1247 tree_find_property(device *root,
1248                    const char *path_to_property)
1249 {
1250   name_specifier spec;
1251   if (!split_property_specifier(root, path_to_property, &spec))
1252     device_error(root, "Invalid property path %s", path_to_property);
1253   root = split_find_device(root, &spec);
1254   return device_find_property(root, spec.property);
1255 }
1256
1257 INLINE_TREE\
1258 (int)
1259 tree_find_boolean_property(device *root,
1260                            const char *path_to_property)
1261 {
1262   name_specifier spec;
1263   if (!split_property_specifier(root, path_to_property, &spec))
1264     device_error(root, "Invalid property path %s", path_to_property);
1265   root = split_find_device(root, &spec);
1266   return device_find_boolean_property(root, spec.property);
1267 }
1268
1269 INLINE_TREE\
1270 (signed_cell)
1271 tree_find_integer_property(device *root,
1272                            const char *path_to_property)
1273 {
1274   name_specifier spec;
1275   if (!split_property_specifier(root, path_to_property, &spec))
1276     device_error(root, "Invalid property path %s", path_to_property);
1277   root = split_find_device(root, &spec);
1278   return device_find_integer_property(root, spec.property);
1279 }
1280
1281 INLINE_TREE\
1282 (device_instance *)
1283 tree_find_ihandle_property(device *root,
1284                            const char *path_to_property)
1285 {
1286   name_specifier spec;
1287   if (!split_property_specifier(root, path_to_property, &spec))
1288     device_error(root, "Invalid property path %s", path_to_property);
1289   root = split_find_device(root, &spec);
1290   return device_find_ihandle_property(root, spec.property);
1291 }
1292
1293 INLINE_TREE\
1294 (const char *)
1295 tree_find_string_property(device *root,
1296                           const char *path_to_property)
1297 {
1298   name_specifier spec;
1299   if (!split_property_specifier(root, path_to_property, &spec))
1300     device_error(root, "Invalid property path %s", path_to_property);
1301   root = split_find_device(root, &spec);
1302   return device_find_string_property(root, spec.property);
1303 }
1304
1305
1306 #endif /* _PARSE_C_ */