src/intel/tools/aubinator.c

   1 /*
   2  * Copyright © 2016 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <stdint.h>
  27 #include <getopt.h>
  28
  29 #include <unistd.h>
  30 #include <fcntl.h>
  31 #include <string.h>
  32 #include <signal.h>
  33 #include <errno.h>
  34 #include <inttypes.h>
  35 #include <sys/types.h>
  36 #include <sys/stat.h>
  37 #include <sys/wait.h>
  38 #include <sys/mman.h>
  39
  40 #include "util/macros.h"
  41
  42 #include "common/gen_decoder.h"
  43 #include "intel_aub.h"
  44 #include "gen_disasm.h"
  45
  46 /* Below is the only command missing from intel_aub.h in libdrm
  47  * So, reuse intel_aub.h from libdrm and #define the
  48  * AUB_MI_BATCH_BUFFER_END as below
  49  */
  50 #define AUB_MI_BATCH_BUFFER_END (0x0500 << 16)
  51
  52 #define CSI "\e["
  53 #define BLUE_HEADER  CSI "0;44m"
  54 #define GREEN_HEADER CSI "1;42m"
  55 #define NORMAL       CSI "0m"
  56
  57 /* options */
  58
  59 static bool option_full_decode = true;
  60 static bool option_print_offsets = true;
  61 static enum { COLOR_AUTO, COLOR_ALWAYS, COLOR_NEVER } option_color;
  62
  63 /* state */
  64
  65 uint16_t pci_id = 0;
  66 char *input_file = NULL, *xml_path = NULL;
  67 struct gen_device_info devinfo;
  68 struct gen_batch_decode_ctx batch_ctx;
  69
  70 uint64_t gtt_size, gtt_end;
  71 void *gtt;
  72 uint64_t general_state_base;
  73 uint64_t surface_state_base;
  74 uint64_t dynamic_state_base;
  75 uint64_t instruction_base;
  76 uint64_t instruction_bound;
  77
  78 FILE *outfile;
  79
  80 static inline uint32_t
  81 field(uint32_t value, int start, int end)
  82 {
  83    uint32_t mask;
  84
  85    mask = ~0U >> (31 - end + start);
  86
  87    return (value >> start) & mask;
  88 }
  89
  90 struct brw_instruction;
  91
  92 static inline int
  93 valid_offset(uint32_t offset)
  94 {
  95    return offset < gtt_end;
  96 }
  97
  98 #define GEN_ENGINE_RENDER 1
  99 #define GEN_ENGINE_BLITTER 2
 100
 101 static void
 102 handle_trace_block(uint32_t *p)
 103 {
 104    int operation = p[1] & AUB_TRACE_OPERATION_MASK;
 105    int type = p[1] & AUB_TRACE_TYPE_MASK;
 106    int address_space = p[1] & AUB_TRACE_ADDRESS_SPACE_MASK;
 107    uint64_t offset = p[3];
 108    uint32_t size = p[4];
 109    int header_length = p[0] & 0xffff;
 110    uint32_t *data = p + header_length + 2;
 111    int engine = GEN_ENGINE_RENDER;
 112
 113    if (devinfo.gen >= 8)
 114       offset += (uint64_t) p[5] << 32;
 115
 116    switch (operation) {
 117    case AUB_TRACE_OP_DATA_WRITE:
 118       if (address_space != AUB_TRACE_MEMTYPE_GTT)
 119          break;
 120       if (gtt_size < offset + size) {
 121          fprintf(stderr, "overflow gtt space: %s\n", strerror(errno));
 122          exit(EXIT_FAILURE);
 123       }
 124       memcpy((char *) gtt + offset, data, size);
 125       if (gtt_end < offset + size)
 126          gtt_end = offset + size;
 127       break;
 128    case AUB_TRACE_OP_COMMAND_WRITE:
 129       switch (type) {
 130       case AUB_TRACE_TYPE_RING_PRB0:
 131          engine = GEN_ENGINE_RENDER;
 132          break;
 133       case AUB_TRACE_TYPE_RING_PRB2:
 134          engine = GEN_ENGINE_BLITTER;
 135          break;
 136       default:
 137          fprintf(outfile, "command write to unknown ring %d\n", type);
 138          break;
 139       }
 140
 141       (void)engine; /* TODO */
 142       gen_print_batch(&batch_ctx, data, size, 0);
 143
 144       gtt_end = 0;
 145       break;
 146    }
 147 }
 148
 149 static struct gen_batch_decode_bo
 150 get_gen_batch_bo(void *user_data, uint64_t address)
 151 {
 152    if (address > gtt_end)
 153       return (struct gen_batch_decode_bo) { .map = NULL };
 154
 155    /* We really only have one giant address range */
 156    return (struct gen_batch_decode_bo) {
 157       .addr = 0,
 158       .map = gtt,
 159       .size = gtt_size
 160    };
 161 }
 162
 163 static void
 164 aubinator_init(uint16_t aub_pci_id, const char *app_name)
 165 {
 166    if (!gen_get_device_info(pci_id, &devinfo)) {
 167       fprintf(stderr, "can't find device information: pci_id=0x%x\n", pci_id);
 168       exit(EXIT_FAILURE);
 169    }
 170
 171    enum gen_batch_decode_flags batch_flags = 0;
 172    if (option_color == COLOR_ALWAYS)
 173       batch_flags |= GEN_BATCH_DECODE_IN_COLOR;
 174    if (option_full_decode)
 175       batch_flags |= GEN_BATCH_DECODE_FULL;
 176    if (option_print_offsets)
 177       batch_flags |= GEN_BATCH_DECODE_OFFSETS;
 178    batch_flags |= GEN_BATCH_DECODE_FLOATS;
 179
 180    gen_batch_decode_ctx_init(&batch_ctx, &devinfo, outfile, batch_flags,
 181                              xml_path, get_gen_batch_bo, NULL);
 182
 183    char *color = GREEN_HEADER, *reset_color = NORMAL;
 184    if (option_color == COLOR_NEVER)
 185       color = reset_color = "";
 186
 187    fprintf(outfile, "%sAubinator: Intel AUB file decoder.%-80s%s\n",
 188            color, "", reset_color);
 189
 190    if (input_file)
 191       fprintf(outfile, "File name:        %s\n", input_file);
 192
 193    if (aub_pci_id)
 194       fprintf(outfile, "PCI ID:           0x%x\n", aub_pci_id);
 195
 196    fprintf(outfile, "Application name: %s\n", app_name);
 197
 198    fprintf(outfile, "Decoding as:      %s\n", gen_get_device_name(pci_id));
 199
 200    /* Throw in a new line before the first batch */
 201    fprintf(outfile, "\n");
 202 }
 203
 204 static void
 205 handle_trace_header(uint32_t *p)
 206 {
 207    /* The intel_aubdump tool from IGT is kind enough to put a PCI-ID= tag in
 208     * the AUB header comment.  If the user hasn't specified a hardware
 209     * generation, try to use the one from the AUB file.
 210     */
 211    uint32_t *end = p + (p[0] & 0xffff) + 2;
 212    int aub_pci_id = 0;
 213    if (end > &p[12] && p[12] > 0)
 214       sscanf((char *)&p[13], "PCI-ID=%i", &aub_pci_id);
 215
 216    if (pci_id == 0)
 217       pci_id = aub_pci_id;
 218
 219    char app_name[33];
 220    strncpy(app_name, (char *)&p[2], 32);
 221    app_name[32] = 0;
 222
 223    aubinator_init(aub_pci_id, app_name);
 224 }
 225
 226 static void
 227 handle_memtrace_version(uint32_t *p)
 228 {
 229    int header_length = p[0] & 0xffff;
 230    char app_name[64];
 231    int app_name_len = MIN2(4 * (header_length + 1 - 5), ARRAY_SIZE(app_name) - 1);
 232    int pci_id_len = 0;
 233    int aub_pci_id = 0;
 234
 235    strncpy(app_name, (char *)&p[5], app_name_len);
 236    app_name[app_name_len] = 0;
 237    sscanf(app_name, "PCI-ID=%i %n", &aub_pci_id, &pci_id_len);
 238    if (pci_id == 0)
 239       pci_id = aub_pci_id;
 240    aubinator_init(aub_pci_id, app_name + pci_id_len);
 241 }
 242
 243 static void
 244 handle_memtrace_reg_write(uint32_t *p)
 245 {
 246    uint32_t offset = p[1];
 247    uint32_t value = p[5];
 248    int engine;
 249    static int render_elsp_writes = 0;
 250    static int blitter_elsp_writes = 0;
 251    static int render_elsq0 = 0;
 252    static int blitter_elsq0 = 0;
 253    uint8_t *pphwsp;
 254
 255    if (offset == 0x2230) {
 256       render_elsp_writes++;
 257       engine = GEN_ENGINE_RENDER;
 258    } else if (offset == 0x22230) {
 259       blitter_elsp_writes++;
 260       engine = GEN_ENGINE_BLITTER;
 261    } else if (offset == 0x2510) {
 262       render_elsq0 = value;
 263    } else if (offset == 0x22510) {
 264       blitter_elsq0 = value;
 265    } else if (offset == 0x2550 || offset == 0x22550) {
 266       /* nothing */;
 267    } else {
 268       return;
 269    }
 270
 271    if (render_elsp_writes > 3 || blitter_elsp_writes > 3) {
 272       render_elsp_writes = blitter_elsp_writes = 0;
 273       pphwsp = (uint8_t*)gtt + (value & 0xfffff000);
 274    } else if (offset == 0x2550) {
 275       engine = GEN_ENGINE_RENDER;
 276       pphwsp = (uint8_t*)gtt + (render_elsq0 & 0xfffff000);
 277    } else if (offset == 0x22550) {
 278       engine = GEN_ENGINE_BLITTER;
 279       pphwsp = (uint8_t*)gtt + (blitter_elsq0 & 0xfffff000);
 280    } else {
 281       return;
 282    }
 283
 284    const uint32_t pphwsp_size = 4096;
 285    uint32_t *context = (uint32_t*)(pphwsp + pphwsp_size);
 286    uint32_t ring_buffer_head = context[5];
 287    uint32_t ring_buffer_tail = context[7];
 288    uint32_t ring_buffer_start = context[9];
 289    uint32_t *commands = (uint32_t*)((uint8_t*)gtt + ring_buffer_start + ring_buffer_head);
 290    (void)engine; /* TODO */
 291    gen_print_batch(&batch_ctx, commands, ring_buffer_tail - ring_buffer_head, 0);
 292 }
 293
 294 static void
 295 handle_memtrace_mem_write(uint32_t *p)
 296 {
 297    uint64_t address = *(uint64_t*)&p[1];
 298    uint32_t address_space = p[3] >> 28;
 299    uint32_t size = p[4];
 300    uint32_t *data = p + 5;
 301
 302    if (address_space != 1)
 303       return;
 304
 305    if (gtt_size < address + size) {
 306       fprintf(stderr, "overflow gtt space: %s\n", strerror(errno));
 307       exit(EXIT_FAILURE);
 308    }
 309
 310    memcpy((char *) gtt + address, data, size);
 311    if (gtt_end < address + size)
 312       gtt_end = address + size;
 313 }
 314
 315 struct aub_file {
 316    FILE *stream;
 317
 318    uint32_t *map, *end, *cursor;
 319    uint32_t *mem_end;
 320 };
 321
 322 static struct aub_file *
 323 aub_file_open(const char *filename)
 324 {
 325    struct aub_file *file;
 326    struct stat sb;
 327    int fd;
 328
 329    file = calloc(1, sizeof *file);
 330    fd = open(filename, O_RDONLY);
 331    if (fd == -1) {
 332       fprintf(stderr, "open %s failed: %s\n", filename, strerror(errno));
 333       exit(EXIT_FAILURE);
 334    }
 335
 336    if (fstat(fd, &sb) == -1) {
 337       fprintf(stderr, "stat failed: %s\n", strerror(errno));
 338       exit(EXIT_FAILURE);
 339    }
 340
 341    file->map = mmap(NULL, sb.st_size,
 342                     PROT_READ, MAP_SHARED, fd, 0);
 343    if (file->map == MAP_FAILED) {
 344       fprintf(stderr, "mmap failed: %s\n", strerror(errno));
 345       exit(EXIT_FAILURE);
 346    }
 347
 348    close(fd);
 349
 350    file->cursor = file->map;
 351    file->end = file->map + sb.st_size / 4;
 352
 353    return file;
 354 }
 355
 356 static struct aub_file *
 357 aub_file_stdin(void)
 358 {
 359    struct aub_file *file;
 360
 361    file = calloc(1, sizeof *file);
 362    file->stream = stdin;
 363
 364    return file;
 365 }
 366
 367 #define TYPE(dw)       (((dw) >> 29) & 7)
 368 #define OPCODE(dw)     (((dw) >> 23) & 0x3f)
 369 #define SUBOPCODE(dw)  (((dw) >> 16) & 0x7f)
 370
 371 #define MAKE_HEADER(type, opcode, subopcode) \
 372                    (((type) << 29) | ((opcode) << 23) | ((subopcode) << 16))
 373
 374 #define TYPE_AUB            0x7
 375
 376 /* Classic AUB opcodes */
 377 #define OPCODE_AUB          0x01
 378 #define SUBOPCODE_HEADER    0x05
 379 #define SUBOPCODE_BLOCK     0x41
 380 #define SUBOPCODE_BMP       0x1e
 381
 382 /* Newer version AUB opcode */
 383 #define OPCODE_NEW_AUB      0x2e
 384 #define SUBOPCODE_REG_POLL  0x02
 385 #define SUBOPCODE_REG_WRITE 0x03
 386 #define SUBOPCODE_MEM_POLL  0x05
 387 #define SUBOPCODE_MEM_WRITE 0x06
 388 #define SUBOPCODE_VERSION   0x0e
 389
 390 #define MAKE_GEN(major, minor) ( ((major) << 8) | (minor) )
 391
 392 enum {
 393    AUB_ITEM_DECODE_OK,
 394    AUB_ITEM_DECODE_FAILED,
 395    AUB_ITEM_DECODE_NEED_MORE_DATA,
 396 };
 397
 398 static int
 399 aub_file_decode_batch(struct aub_file *file)
 400 {
 401    uint32_t *p, h, *new_cursor;
 402    int header_length, bias;
 403
 404    if (file->end - file->cursor < 1)
 405       return AUB_ITEM_DECODE_NEED_MORE_DATA;
 406
 407    p = file->cursor;
 408    h = *p;
 409    header_length = h & 0xffff;
 410
 411    switch (OPCODE(h)) {
 412    case OPCODE_AUB:
 413       bias = 2;
 414       break;
 415    case OPCODE_NEW_AUB:
 416       bias = 1;
 417       break;
 418    default:
 419       fprintf(outfile, "unknown opcode %d at %td/%td\n",
 420               OPCODE(h), file->cursor - file->map,
 421               file->end - file->map);
 422       return AUB_ITEM_DECODE_FAILED;
 423    }
 424
 425    new_cursor = p + header_length + bias;
 426    if ((h & 0xffff0000) == MAKE_HEADER(TYPE_AUB, OPCODE_AUB, SUBOPCODE_BLOCK)) {
 427       if (file->end - file->cursor < 4)
 428          return AUB_ITEM_DECODE_NEED_MORE_DATA;
 429       new_cursor += p[4] / 4;
 430    }
 431
 432    if (new_cursor > file->end)
 433       return AUB_ITEM_DECODE_NEED_MORE_DATA;
 434
 435    switch (h & 0xffff0000) {
 436    case MAKE_HEADER(TYPE_AUB, OPCODE_AUB, SUBOPCODE_HEADER):
 437       handle_trace_header(p);
 438       break;
 439    case MAKE_HEADER(TYPE_AUB, OPCODE_AUB, SUBOPCODE_BLOCK):
 440       handle_trace_block(p);
 441       break;
 442    case MAKE_HEADER(TYPE_AUB, OPCODE_AUB, SUBOPCODE_BMP):
 443       break;
 444    case MAKE_HEADER(TYPE_AUB, OPCODE_NEW_AUB, SUBOPCODE_VERSION):
 445       handle_memtrace_version(p);
 446       break;
 447    case MAKE_HEADER(TYPE_AUB, OPCODE_NEW_AUB, SUBOPCODE_REG_WRITE):
 448       handle_memtrace_reg_write(p);
 449       break;
 450    case MAKE_HEADER(TYPE_AUB, OPCODE_NEW_AUB, SUBOPCODE_MEM_WRITE):
 451       handle_memtrace_mem_write(p);
 452       break;
 453    case MAKE_HEADER(TYPE_AUB, OPCODE_NEW_AUB, SUBOPCODE_MEM_POLL):
 454       fprintf(outfile, "memory poll block (dwords %d):\n", h & 0xffff);
 455       break;
 456    case MAKE_HEADER(TYPE_AUB, OPCODE_NEW_AUB, SUBOPCODE_REG_POLL):
 457       break;
 458    default:
 459       fprintf(outfile, "unknown block type=0x%x, opcode=0x%x, "
 460              "subopcode=0x%x (%08x)\n", TYPE(h), OPCODE(h), SUBOPCODE(h), h);
 461       break;
 462    }
 463    file->cursor = new_cursor;
 464
 465    return AUB_ITEM_DECODE_OK;
 466 }
 467
 468 static int
 469 aub_file_more_stuff(struct aub_file *file)
 470 {
 471    return file->cursor < file->end || (file->stream && !feof(file->stream));
 472 }
 473
 474 #define AUB_READ_BUFFER_SIZE (4096)
 475 #define MAX(a, b) ((a) < (b) ? (b) : (a))
 476
 477 static void
 478 aub_file_data_grow(struct aub_file *file)
 479 {
 480    size_t old_size = (file->mem_end - file->map) * 4;
 481    size_t new_size = MAX(old_size * 2, AUB_READ_BUFFER_SIZE);
 482    uint32_t *new_start = realloc(file->map, new_size);
 483
 484    file->cursor = new_start + (file->cursor - file->map);
 485    file->end = new_start + (file->end - file->map);
 486    file->map = new_start;
 487    file->mem_end = file->map + (new_size / 4);
 488 }
 489
 490 static bool
 491 aub_file_data_load(struct aub_file *file)
 492 {
 493    size_t r;
 494
 495    if (file->stream == NULL)
 496       return false;
 497
 498    /* First remove any consumed data */
 499    if (file->cursor > file->map) {
 500       memmove(file->map, file->cursor,
 501               (file->end - file->cursor) * 4);
 502       file->end -= file->cursor - file->map;
 503       file->cursor = file->map;
 504    }
 505
 506    /* Then load some new data in */
 507    if ((file->mem_end - file->end) < (AUB_READ_BUFFER_SIZE / 4))
 508       aub_file_data_grow(file);
 509
 510    r = fread(file->end, 1, (file->mem_end - file->end) * 4, file->stream);
 511    file->end += r / 4;
 512
 513    return r != 0;
 514 }
 515
 516 static void
 517 setup_pager(void)
 518 {
 519    int fds[2];
 520    pid_t pid;
 521
 522    if (!isatty(1))
 523       return;
 524
 525    if (pipe(fds) == -1)
 526       return;
 527
 528    pid = fork();
 529    if (pid == -1)
 530       return;
 531
 532    if (pid == 0) {
 533       close(fds[1]);
 534       dup2(fds[0], 0);
 535       execlp("less", "less", "-FRSi", NULL);
 536    }
 537
 538    close(fds[0]);
 539    dup2(fds[1], 1);
 540    close(fds[1]);
 541 }
 542
 543 static void
 544 print_help(const char *progname, FILE *file)
 545 {
 546    fprintf(file,
 547            "Usage: %s [OPTION]... [FILE]\n"
 548            "Decode aub file contents from either FILE or the standard input.\n\n"
 549            "A valid --gen option must be provided.\n\n"
 550            "      --help          display this help and exit\n"
 551            "      --gen=platform  decode for given platform (3 letter platform name)\n"
 552            "      --headers       decode only command headers\n"
 553            "      --color[=WHEN]  colorize the output; WHEN can be 'auto' (default\n"
 554            "                        if omitted), 'always', or 'never'\n"
 555            "      --no-pager      don't launch pager\n"
 556            "      --no-offsets    don't print instruction offsets\n"
 557            "      --xml=DIR       load hardware xml description from directory DIR\n",
 558            progname);
 559 }
 560
 561 int main(int argc, char *argv[])
 562 {
 563    struct aub_file *file;
 564    int c, i;
 565    bool help = false, pager = true;
 566    const struct option aubinator_opts[] = {
 567       { "help",       no_argument,       (int *) &help,                 true },
 568       { "no-pager",   no_argument,       (int *) &pager,                false },
 569       { "no-offsets", no_argument,       (int *) &option_print_offsets, false },
 570       { "gen",        required_argument, NULL,                          'g' },
 571       { "headers",    no_argument,       (int *) &option_full_decode,   false },
 572       { "color",      required_argument, NULL,                          'c' },
 573       { "xml",        required_argument, NULL,                          'x' },
 574       { NULL,         0,                 NULL,                          0 }
 575    };
 576
 577    outfile = stdout;
 578
 579    i = 0;
 580    while ((c = getopt_long(argc, argv, "", aubinator_opts, &i)) != -1) {
 581       switch (c) {
 582       case 'g': {
 583          const int id = gen_device_name_to_pci_device_id(optarg);
 584          if (id < 0) {
 585             fprintf(stderr, "can't parse gen: '%s', expected ivb, byt, hsw, "
 586                                    "bdw, chv, skl, kbl or bxt\n", optarg);
 587             exit(EXIT_FAILURE);
 588          } else {
 589             pci_id = id;
 590          }
 591          break;
 592       }
 593       case 'c':
 594          if (optarg == NULL || strcmp(optarg, "always") == 0)
 595             option_color = COLOR_ALWAYS;
 596          else if (strcmp(optarg, "never") == 0)
 597             option_color = COLOR_NEVER;
 598          else if (strcmp(optarg, "auto") == 0)
 599             option_color = COLOR_AUTO;
 600          else {
 601             fprintf(stderr, "invalid value for --color: %s", optarg);
 602             exit(EXIT_FAILURE);
 603          }
 604          break;
 605       case 'x':
 606          xml_path = strdup(optarg);
 607          break;
 608       default:
 609          break;
 610       }
 611    }
 612
 613    if (help || argc == 1) {
 614       print_help(argv[0], stderr);
 615       exit(0);
 616    }
 617
 618    if (optind < argc)
 619       input_file = argv[optind];
 620
 621    /* Do this before we redirect stdout to pager. */
 622    if (option_color == COLOR_AUTO)
 623       option_color = isatty(1) ? COLOR_ALWAYS : COLOR_NEVER;
 624
 625    if (isatty(1) && pager)
 626       setup_pager();
 627
 628    if (input_file == NULL)
 629       file = aub_file_stdin();
 630    else
 631       file = aub_file_open(input_file);
 632
 633    /* mmap a terabyte for our gtt space. */
 634    gtt_size = 1ull << 40;
 635    gtt = mmap(NULL, gtt_size, PROT_READ | PROT_WRITE,
 636               MAP_PRIVATE | MAP_ANONYMOUS |  MAP_NORESERVE, -1, 0);
 637    if (gtt == MAP_FAILED) {
 638       fprintf(stderr, "failed to alloc gtt space: %s\n", strerror(errno));
 639       exit(EXIT_FAILURE);
 640    }
 641
 642    while (aub_file_more_stuff(file)) {
 643       switch (aub_file_decode_batch(file)) {
 644       case AUB_ITEM_DECODE_OK:
 645          break;
 646       case AUB_ITEM_DECODE_NEED_MORE_DATA:
 647          if (!file->stream) {
 648             file->cursor = file->end;
 649             break;
 650          }
 651          if (aub_file_more_stuff(file) && !aub_file_data_load(file)) {
 652             fprintf(stderr, "failed to load data from stdin\n");
 653             exit(EXIT_FAILURE);
 654          }
 655          break;
 656       default:
 657          fprintf(stderr, "failed to parse aubdump data\n");
 658          exit(EXIT_FAILURE);
 659       }
 660    }
 661
 662
 663    fflush(stdout);
 664    /* close the stdout which is opened to write the output */
 665    close(1);
 666    free(xml_path);
 667
 668    wait(NULL);
 669
 670    return EXIT_SUCCESS;
 671 }