bfd/pei-x86_64.c

   1 /* BFD back-end for Intel 386 PE IMAGE COFF files.
   2    Copyright (C) 2006-2017 Free Software Foundation, Inc.
   3
   4    This file is part of BFD, the Binary File Descriptor library.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  19    MA 02110-1301, USA.
  20
  21    Written by Kai Tietz, OneVision Software GmbH&CoKg.  */
  22
  23 #include "sysdep.h"
  24 #include "bfd.h"
  25
  26 #define TARGET_SYM              x86_64_pei_vec
  27 #define TARGET_NAME             "pei-x86-64"
  28 #define COFF_IMAGE_WITH_PE
  29 #define COFF_WITH_PE
  30 #define COFF_WITH_pex64
  31 #define PCRELOFFSET             TRUE
  32 #if defined (USE_MINGW64_LEADING_UNDERSCORES)
  33 #define TARGET_UNDERSCORE       '_'
  34 #else
  35 #define TARGET_UNDERSCORE       0
  36 #endif
  37 /* Long section names not allowed in executable images, only object files.  */
  38 #define COFF_LONG_SECTION_NAMES 0
  39 #define COFF_SUPPORT_GNU_LINKONCE
  40 #define COFF_LONG_FILENAMES
  41 #define PDATA_ROW_SIZE  (3 * 4)
  42
  43 #define COFF_SECTION_ALIGNMENT_ENTRIES \
  44 { COFF_SECTION_NAME_EXACT_MATCH (".bss"), \
  45   COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
  46 { COFF_SECTION_NAME_PARTIAL_MATCH (".data"), \
  47   COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
  48 { COFF_SECTION_NAME_PARTIAL_MATCH (".rdata"), \
  49   COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
  50 { COFF_SECTION_NAME_PARTIAL_MATCH (".text"), \
  51   COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
  52 { COFF_SECTION_NAME_PARTIAL_MATCH (".idata"), \
  53   COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
  54 { COFF_SECTION_NAME_EXACT_MATCH (".pdata"), \
  55   COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
  56 { COFF_SECTION_NAME_PARTIAL_MATCH (".debug"), \
  57   COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \
  58 { COFF_SECTION_NAME_PARTIAL_MATCH (".gnu.linkonce.wi."), \
  59   COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }
  60
  61 /* Note we have to make sure not to include headers twice.
  62    Not all headers are wrapped in #ifdef guards, so we define
  63    PEI_HEADERS to prevent double including in coff-x86_64.c  */
  64 #define PEI_HEADERS
  65 #include "sysdep.h"
  66 #include "bfd.h"
  67 #include "libbfd.h"
  68 #include "coff/x86_64.h"
  69 #include "coff/internal.h"
  70 #include "coff/pe.h"
  71 #include "libcoff.h"
  72 #include "libpei.h"
  73 #include "libiberty.h"
  74
  75 #undef AOUTSZ
  76 #define AOUTSZ          PEPAOUTSZ
  77 #define PEAOUTHDR       PEPAOUTHDR
  78
  79 /* Name of registers according to SEH conventions.  */
  80
  81 static const char * const pex_regs[16] = {
  82   "rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi",
  83   "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"
  84 };
  85
  86 /* Swap in a runtime function.  */
  87
  88 static void
  89 pex64_get_runtime_function (bfd *abfd, struct pex64_runtime_function *rf,
  90                             const void *data)
  91 {
  92   const struct external_pex64_runtime_function *ex_rf =
  93     (const struct external_pex64_runtime_function *) data;
  94   rf->rva_BeginAddress = bfd_get_32 (abfd, ex_rf->rva_BeginAddress);
  95   rf->rva_EndAddress = bfd_get_32 (abfd, ex_rf->rva_EndAddress);
  96   rf->rva_UnwindData =  bfd_get_32 (abfd, ex_rf->rva_UnwindData);
  97 }
  98
  99 /* Swap in unwind info header.  */
 100
 101 static void
 102 pex64_get_unwind_info (bfd *abfd, struct pex64_unwind_info *ui, void *data)
 103 {
 104   struct external_pex64_unwind_info *ex_ui =
 105     (struct external_pex64_unwind_info *) data;
 106   bfd_byte *ex_dta = (bfd_byte *) data;
 107
 108   memset (ui, 0, sizeof (struct pex64_unwind_info));
 109   ui->Version = PEX64_UWI_VERSION (ex_ui->Version_Flags);
 110   ui->Flags = PEX64_UWI_FLAGS (ex_ui->Version_Flags);
 111   ui->SizeOfPrologue = (bfd_vma) ex_ui->SizeOfPrologue;
 112   ui->CountOfCodes = (bfd_vma) ex_ui->CountOfCodes;
 113   ui->FrameRegister = PEX64_UWI_FRAMEREG (ex_ui->FrameRegisterOffset);
 114   ui->FrameOffset = PEX64_UWI_FRAMEOFF (ex_ui->FrameRegisterOffset);
 115   ui->sizeofUnwindCodes = PEX64_UWI_SIZEOF_UWCODE_ARRAY (ui->CountOfCodes);
 116   ui->SizeOfBlock = ui->sizeofUnwindCodes + 4;
 117   ui->rawUnwindCodes = &ex_dta[4];
 118
 119   ex_dta += ui->SizeOfBlock;
 120   switch (ui->Flags)
 121     {
 122     case UNW_FLAG_CHAININFO:
 123       ui->rva_BeginAddress = bfd_get_32 (abfd, ex_dta + 0);
 124       ui->rva_EndAddress = bfd_get_32 (abfd, ex_dta + 4);
 125       ui->rva_UnwindData = bfd_get_32 (abfd, ex_dta + 8);
 126       ui->SizeOfBlock += 12;
 127       return;
 128     case UNW_FLAG_EHANDLER:
 129     case UNW_FLAG_UHANDLER:
 130     case UNW_FLAG_FHANDLER:
 131       ui->rva_ExceptionHandler = bfd_get_32 (abfd, ex_dta);
 132       ui->SizeOfBlock += 4;
 133       return;
 134     default:
 135       return;
 136     }
 137 }
 138
 139 /* Display unwind codes.  */
 140
 141 static void
 142 pex64_xdata_print_uwd_codes (FILE *file, bfd *abfd,
 143                              struct pex64_unwind_info *ui,
 144                              struct pex64_runtime_function *rf)
 145 {
 146   unsigned int i;
 147   unsigned int tmp; /* At least 32 bits.  */
 148   int save_allowed;
 149
 150   if (ui->CountOfCodes == 0 || ui->rawUnwindCodes == NULL)
 151     return;
 152
 153   /* According to UNWIND_CODE documentation:
 154       If an FP reg is used, the any unwind code taking an offset must only be
 155       used after the FP reg is established in the prolog.
 156      But there are counter examples of that in system dlls...  */
 157   save_allowed = TRUE;
 158
 159   i = 0;
 160
 161   if (ui->Version == 2
 162       && PEX64_UNWCODE_CODE (ui->rawUnwindCodes[1]) == UWOP_EPILOG)
 163     {
 164       /* Display epilog opcode (whose docoding is not fully documented).
 165          Looks to be designed to speed-up unwinding, as there is no need
 166          to decode instruction flow if outside an epilog.  */
 167       unsigned int func_size = rf->rva_EndAddress - rf->rva_BeginAddress;
 168
 169       fprintf (file, "\tv2 epilog (length: %02x) at pc+:",
 170                ui->rawUnwindCodes[0]);
 171       if (PEX64_UNWCODE_INFO (ui->rawUnwindCodes[1]))
 172         fprintf (file, " 0x%x", func_size - ui->rawUnwindCodes[0]);
 173       i++;
 174       for (; i < ui->CountOfCodes; i++)
 175         {
 176           const bfd_byte *dta = ui->rawUnwindCodes + 2 * i;
 177           unsigned int off;
 178
 179           if (PEX64_UNWCODE_CODE (dta[1]) != UWOP_EPILOG)
 180             break;
 181           off = dta[0] | (PEX64_UNWCODE_INFO (dta[1]) << 8);
 182           if (off == 0)
 183             fprintf (file, " [pad]");
 184           else
 185             fprintf (file, " 0x%x", func_size - off);
 186         }
 187       fputc ('\n', file);
 188     }
 189
 190   for (; i < ui->CountOfCodes; i++)
 191     {
 192       const bfd_byte *dta = ui->rawUnwindCodes + 2 * i;
 193       unsigned int info = PEX64_UNWCODE_INFO (dta[1]);
 194       int unexpected = FALSE;
 195
 196       fprintf (file, "\t  pc+0x%02x: ", (unsigned int) dta[0]);
 197       switch (PEX64_UNWCODE_CODE (dta[1]))
 198         {
 199         case UWOP_PUSH_NONVOL:
 200           fprintf (file, "push %s", pex_regs[info]);
 201           break;
 202         case UWOP_ALLOC_LARGE:
 203           if (info == 0)
 204             {
 205               tmp = bfd_get_16 (abfd, &dta[2]) * 8;
 206               i++;
 207             }
 208           else
 209             {
 210               tmp = bfd_get_32 (abfd, &dta[2]);
 211               i += 2;
 212             }
 213           fprintf (file, "alloc large area: rsp = rsp - 0x%x", tmp);
 214           break;
 215         case UWOP_ALLOC_SMALL:
 216           fprintf (file, "alloc small area: rsp = rsp - 0x%x", (info + 1) * 8);
 217           break;
 218         case UWOP_SET_FPREG:
 219           /* According to the documentation, info field is unused.  */
 220           fprintf (file, "FPReg: %s = rsp + 0x%x (info = 0x%x)",
 221                    pex_regs[ui->FrameRegister],
 222                    (unsigned int) ui->FrameOffset * 16, info);
 223           unexpected = ui->FrameRegister == 0;
 224           save_allowed = FALSE;
 225           break;
 226         case UWOP_SAVE_NONVOL:
 227           tmp = bfd_get_16 (abfd, &dta[2]) * 8;
 228           i++;
 229           fprintf (file, "save %s at rsp + 0x%x", pex_regs[info], tmp);
 230           unexpected = !save_allowed;
 231           break;
 232         case UWOP_SAVE_NONVOL_FAR:
 233           tmp = bfd_get_32 (abfd, &dta[2]);
 234           i += 2;
 235           fprintf (file, "save %s at rsp + 0x%x", pex_regs[info], tmp);
 236           unexpected = !save_allowed;
 237           break;
 238         case UWOP_SAVE_XMM:
 239           if (ui->Version == 1)
 240             {
 241               tmp = bfd_get_16 (abfd, &dta[2]) * 8;
 242               i++;
 243               fprintf (file, "save mm%u at rsp + 0x%x", info, tmp);
 244               unexpected = !save_allowed;
 245             }
 246           else if (ui->Version == 2)
 247             {
 248               fprintf (file, "epilog %02x %01x", dta[0], info);
 249               unexpected = TRUE;
 250             }
 251           break;
 252         case UWOP_SAVE_XMM_FAR:
 253           tmp = bfd_get_32 (abfd, &dta[2]) * 8;
 254           i += 2;
 255           fprintf (file, "save mm%u at rsp + 0x%x", info, tmp);
 256           unexpected = !save_allowed;
 257           break;
 258         case UWOP_SAVE_XMM128:
 259           tmp = bfd_get_16 (abfd, &dta[2]) * 16;
 260           i++;
 261           fprintf (file, "save xmm%u at rsp + 0x%x", info, tmp);
 262           unexpected = !save_allowed;
 263           break;
 264         case UWOP_SAVE_XMM128_FAR:
 265           tmp = bfd_get_32 (abfd, &dta[2]) * 16;
 266           i += 2;
 267           fprintf (file, "save xmm%u at rsp + 0x%x", info, tmp);
 268           unexpected = !save_allowed;
 269           break;
 270         case UWOP_PUSH_MACHFRAME:
 271           fprintf (file, "interrupt entry (SS, old RSP, EFLAGS, CS, RIP");
 272           if (info == 0)
 273             fprintf (file, ")");
 274           else if (info == 1)
 275             fprintf (file, ",ErrorCode)");
 276           else
 277             fprintf (file, ", unknown(%u))", info);
 278           break;
 279         default:
 280           /* PR 17512: file: 2245-7442-0.004.  */
 281           fprintf (file, _("Unknown: %x"), PEX64_UNWCODE_CODE (dta[1]));
 282           break;
 283       }
 284       if (unexpected)
 285         fprintf (file, " [Unexpected!]");
 286       fputc ('\n', file);
 287     }
 288 }
 289
 290 /* Check wether section SEC_NAME contains the xdata at address ADDR.  */
 291
 292 static asection *
 293 pex64_get_section_by_rva (bfd *abfd, bfd_vma addr, const char *sec_name)
 294 {
 295   asection *section = bfd_get_section_by_name (abfd, sec_name);
 296   bfd_vma vsize;
 297   bfd_size_type datasize = 0;
 298
 299   if (section == NULL
 300       || coff_section_data (abfd, section) == NULL
 301       || pei_section_data (abfd, section) == NULL)
 302     return NULL;
 303   vsize = section->vma - pe_data (abfd)->pe_opthdr.ImageBase;
 304   datasize = section->size;
 305   if (!datasize || vsize > addr || (vsize + datasize) < addr)
 306     return NULL;
 307   return section;
 308 }
 309
 310 /* Dump xdata at for function RF to FILE.  The argument XDATA_SECTION
 311    designate the bfd section containing the xdata, XDATA is its content,
 312    and ENDX the size if known (or NULL).  */
 313
 314 static void
 315 pex64_dump_xdata (FILE *file, bfd *abfd,
 316                   asection *xdata_section, bfd_byte *xdata, bfd_vma *endx,
 317                   struct pex64_runtime_function *rf)
 318 {
 319   bfd_vma vaddr;
 320   bfd_vma end_addr;
 321   bfd_vma addr = rf->rva_UnwindData;
 322   bfd_size_type sec_size = xdata_section->rawsize > 0 ? xdata_section->rawsize : xdata_section->size;
 323   struct pex64_unwind_info ui;
 324
 325   vaddr = xdata_section->vma - pe_data (abfd)->pe_opthdr.ImageBase;
 326   addr -= vaddr;
 327
 328   /* PR 17512: file: 2245-7442-0.004.  */
 329   if (addr >= sec_size)
 330     {
 331       fprintf (file, _("warning: xdata section corrupt\n"));
 332       return;
 333     }
 334
 335   if (endx)
 336     {
 337       end_addr = endx[0] - vaddr;
 338       /* PR 17512: file: 2245-7442-0.004.  */
 339       if (end_addr > sec_size)
 340         {
 341           fprintf (file, _("warning: xdata section corrupt"));
 342           end_addr = sec_size;
 343         }
 344     }
 345   else
 346     end_addr = sec_size;
 347
 348   pex64_get_unwind_info (abfd, &ui, &xdata[addr]);
 349
 350   if (ui.Version != 1 && ui.Version != 2)
 351     {
 352       unsigned int i;
 353       fprintf (file, "\tVersion %u (unknown).\n",
 354                (unsigned int) ui.Version);
 355       for (i = 0; addr < end_addr; addr += 1, i++)
 356         {
 357           if ((i & 15) == 0)
 358             fprintf (file, "\t  %03x:", i);
 359           fprintf (file, " %02x", xdata[addr]);
 360           if ((i & 15) == 15)
 361             fprintf (file, "\n");
 362         }
 363       if ((i & 15) != 0)
 364         fprintf (file, "\n");
 365       return;
 366     }
 367
 368   fprintf (file, "\tVersion: %d, Flags: ", ui.Version);
 369   switch (ui.Flags)
 370     {
 371     case UNW_FLAG_NHANDLER:
 372       fprintf (file, "none");
 373       break;
 374     case UNW_FLAG_EHANDLER:
 375       fprintf (file, "UNW_FLAG_EHANDLER");
 376       break;
 377     case UNW_FLAG_UHANDLER:
 378       fprintf (file, "UNW_FLAG_UHANDLER");
 379       break;
 380     case UNW_FLAG_FHANDLER:
 381       fprintf
 382         (file, "UNW_FLAG_EHANDLER | UNW_FLAG_UHANDLER");
 383       break;
 384     case UNW_FLAG_CHAININFO:
 385       fprintf (file, "UNW_FLAG_CHAININFO");
 386       break;
 387     default:
 388       fprintf (file, "unknown flags value 0x%x", (unsigned int) ui.Flags);
 389       break;
 390     }
 391   fputc ('\n', file);
 392   fprintf (file, "\tNbr codes: %u, ", (unsigned int) ui.CountOfCodes);
 393   fprintf (file, "Prologue size: 0x%02x, Frame offset: 0x%x, ",
 394            (unsigned int) ui.SizeOfPrologue, (unsigned int) ui.FrameOffset);
 395   fprintf (file, "Frame reg: %s\n",
 396            ui.FrameRegister == 0 ? "none"
 397            : pex_regs[(unsigned int) ui.FrameRegister]);
 398
 399   /* PR 17512: file: 2245-7442-0.004.  */
 400   if (ui.CountOfCodes * 2 + ui.rawUnwindCodes > xdata + xdata_section->size)
 401     fprintf (file, _("Too many unwind codes (%ld)\n"), (long) ui.CountOfCodes);
 402   else
 403     pex64_xdata_print_uwd_codes (file, abfd, &ui, rf);
 404
 405   switch (ui.Flags)
 406     {
 407     case UNW_FLAG_EHANDLER:
 408     case UNW_FLAG_UHANDLER:
 409     case UNW_FLAG_FHANDLER:
 410       fprintf (file, "\tHandler: ");
 411       fprintf_vma (file, (ui.rva_ExceptionHandler
 412                           + pe_data (abfd)->pe_opthdr.ImageBase));
 413       fprintf (file, ".\n");
 414       break;
 415     case UNW_FLAG_CHAININFO:
 416       fprintf (file, "\tChain: start: ");
 417       fprintf_vma (file, ui.rva_BeginAddress);
 418       fprintf (file, ", end: ");
 419       fprintf_vma (file, ui.rva_EndAddress);
 420       fprintf (file, "\n\t unwind data: ");
 421       fprintf_vma (file, ui.rva_UnwindData);
 422       fprintf (file, ".\n");
 423       break;
 424     }
 425
 426   /* Now we need end of this xdata block.  */
 427   addr += ui.SizeOfBlock;
 428   if (addr < end_addr)
 429     {
 430       unsigned int i;
 431       fprintf (file,"\tUser data:\n");
 432       for (i = 0; addr < end_addr; addr += 1, i++)
 433         {
 434           if ((i & 15) == 0)
 435             fprintf (file, "\t  %03x:", i);
 436           fprintf (file, " %02x", xdata[addr]);
 437           if ((i & 15) == 15)
 438             fprintf (file, "\n");
 439         }
 440       if ((i & 15) != 0)
 441         fprintf (file, "\n");
 442     }
 443 }
 444
 445 /* Helper function to sort xdata.  The entries of xdata are sorted to know
 446    the size of each entry.  */
 447
 448 static int
 449 sort_xdata_arr (const void *l, const void *r)
 450 {
 451   const bfd_vma *lp = (const bfd_vma *) l;
 452   const bfd_vma *rp = (const bfd_vma *) r;
 453
 454   if (*lp == *rp)
 455     return 0;
 456   return (*lp < *rp ? -1 : 1);
 457 }
 458
 459 /* Display unwind tables for x86-64.  */
 460
 461 static bfd_boolean
 462 pex64_bfd_print_pdata_section (bfd *abfd, void *vfile, asection *pdata_section)
 463 {
 464   FILE *file = (FILE *) vfile;
 465   bfd_byte *pdata = NULL;
 466   bfd_byte *xdata = NULL;
 467   asection *xdata_section = NULL;
 468   bfd_vma xdata_base;
 469   bfd_size_type i;
 470   bfd_size_type datasize;
 471   bfd_size_type stop;
 472   bfd_vma prev_beginaddress = (bfd_vma) -1;
 473   bfd_vma prev_unwinddata_rva = (bfd_vma) -1;
 474   bfd_vma imagebase;
 475   int onaline = PDATA_ROW_SIZE;
 476   int seen_error = 0;
 477   bfd_vma *xdata_arr = NULL;
 478   int xdata_arr_cnt;
 479   bfd_boolean virt_size_is_zero = FALSE;
 480
 481   /* Sanity checks.  */
 482   if (pdata_section == NULL
 483       || coff_section_data (abfd, pdata_section) == NULL
 484       || pei_section_data (abfd, pdata_section) == NULL)
 485     return TRUE;
 486
 487   stop = pei_section_data (abfd, pdata_section)->virt_size;
 488   if ((stop % onaline) != 0)
 489     fprintf (file,
 490              /* xgettext:c-format */
 491              _("Warning: %s section size (%ld) is not a multiple of %d\n"),
 492              pdata_section->name, (long) stop, onaline);
 493
 494   datasize = pdata_section->size;
 495   if (datasize == 0)
 496     {
 497       if (stop)
 498         fprintf (file, _("Warning: %s section size is zero\n"),
 499                  pdata_section->name);
 500       return TRUE;
 501     }
 502
 503   /* virt_size might be zero for objects.  */
 504   if (stop == 0 && strcmp (abfd->xvec->name, "pe-x86-64") == 0)
 505     {
 506       stop = (datasize / onaline) * onaline;
 507       virt_size_is_zero = TRUE;
 508     }
 509   else if (datasize < stop)
 510       {
 511         fprintf (file,
 512                  /* xgettext:c-format */
 513                  _("Warning: %s section size (%ld) is smaller than virtual size (%ld)\n"),
 514                  pdata_section->name, (unsigned long) datasize,
 515                  (unsigned long) stop);
 516         /* Be sure not to read passed datasize.  */
 517         stop = datasize / onaline;
 518       }
 519
 520   /* Display functions table.  */
 521   fprintf (file,
 522            _("\nThe Function Table (interpreted %s section contents)\n"),
 523            pdata_section->name);
 524
 525   fprintf (file, _("vma:\t\t\tBeginAddress\t EndAddress\t  UnwindData\n"));
 526
 527   if (!bfd_malloc_and_get_section (abfd, pdata_section, &pdata))
 528     goto done;
 529
 530   /* Table of xdata entries.  */
 531   xdata_arr = (bfd_vma *) xmalloc (sizeof (bfd_vma) * ((stop / onaline) + 1));
 532   xdata_arr_cnt = 0;
 533
 534   if (strcmp (abfd->xvec->name, "pei-x86-64") == 0)
 535     imagebase = pe_data (abfd)->pe_opthdr.ImageBase;
 536   else
 537     imagebase = 0;
 538
 539   for (i = 0; i < stop; i += onaline)
 540     {
 541       struct pex64_runtime_function rf;
 542
 543       if (i + PDATA_ROW_SIZE > stop)
 544         break;
 545
 546       pex64_get_runtime_function (abfd, &rf, &pdata[i]);
 547
 548       if (rf.rva_BeginAddress == 0 && rf.rva_EndAddress == 0
 549           && rf.rva_UnwindData == 0)
 550         /* We are probably into the padding of the section now.  */
 551         break;
 552       fputc (' ', file);
 553       fprintf_vma (file, i + pdata_section->vma);
 554       fprintf (file, ":\t");
 555       fprintf_vma (file, imagebase + rf.rva_BeginAddress);
 556       fprintf (file, " ");
 557       fprintf_vma (file, imagebase + rf.rva_EndAddress);
 558       fprintf (file, " ");
 559       fprintf_vma (file, imagebase + rf.rva_UnwindData);
 560       fprintf (file, "\n");
 561       if (i != 0 && rf.rva_BeginAddress <= prev_beginaddress)
 562         {
 563           seen_error = 1;
 564           fprintf (file, "  has %s begin address as predecessor\n",
 565             (rf.rva_BeginAddress < prev_beginaddress ? "smaller" : "same"));
 566         }
 567       prev_beginaddress = rf.rva_BeginAddress;
 568       /* Now we check for negative addresses.  */
 569       if ((prev_beginaddress & 0x80000000) != 0)
 570         {
 571           seen_error = 1;
 572           fprintf (file, "  has negative begin address\n");
 573         }
 574       if ((rf.rva_EndAddress & 0x80000000) != 0)
 575         {
 576           seen_error = 1;
 577           fprintf (file, "  has negative end address\n");
 578         }
 579       if ((rf.rva_UnwindData & 0x80000000) != 0)
 580         {
 581           seen_error = 1;
 582           fprintf (file, "  has negative unwind address\n");
 583         }
 584       else if ((rf.rva_UnwindData && !PEX64_IS_RUNTIME_FUNCTION_CHAINED (&rf))
 585                 || virt_size_is_zero)
 586         xdata_arr[xdata_arr_cnt++] = rf.rva_UnwindData;
 587     }
 588
 589   if (seen_error)
 590     goto done;
 591
 592   /* Add end of list marker.  */
 593   xdata_arr[xdata_arr_cnt++] = ~((bfd_vma) 0);
 594
 595   /* Sort start RVAs of xdata.  */
 596   if (xdata_arr_cnt > 1)
 597     qsort (xdata_arr, (size_t) xdata_arr_cnt, sizeof (bfd_vma),
 598            sort_xdata_arr);
 599
 600   /* Find the section containing the unwind data (.xdata).  */
 601   xdata_base = xdata_arr[0];
 602   /* For sections with long names, first look for the same
 603      section name, replacing .pdata by .xdata prefix.  */
 604   if (strcmp (pdata_section->name, ".pdata") != 0)
 605     {
 606       size_t len = strlen (pdata_section->name);
 607       char *xdata_name = xmalloc (len + 1);
 608
 609       xdata_name = memcpy (xdata_name, pdata_section->name, len + 1);
 610       /* Transform .pdata prefix into .xdata prefix.  */
 611       if (len > 1)
 612         xdata_name [1] = 'x';
 613       xdata_section = pex64_get_section_by_rva (abfd, xdata_base,
 614                                                 xdata_name);
 615       free (xdata_name);
 616     }
 617   /* Second, try the .xdata section itself.  */
 618   if (!xdata_section)
 619     xdata_section = pex64_get_section_by_rva (abfd, xdata_base, ".xdata");
 620   /* Otherwise, if xdata_base is non zero, search also inside
 621      other standard sections.  */
 622   if (!xdata_section && xdata_base)
 623     xdata_section = pex64_get_section_by_rva (abfd, xdata_base, ".rdata");
 624   if (!xdata_section && xdata_base)
 625     xdata_section = pex64_get_section_by_rva (abfd, xdata_base, ".data");
 626   if (!xdata_section && xdata_base)
 627     xdata_section = pex64_get_section_by_rva (abfd, xdata_base, ".pdata");
 628   if (!xdata_section && xdata_base)
 629     xdata_section = pex64_get_section_by_rva (abfd, xdata_base, ".text");
 630   /* Transfer xdata section into xdata array.  */
 631   if (!xdata_section
 632       || !bfd_malloc_and_get_section (abfd, xdata_section, &xdata))
 633     goto done;
 634
 635   /* Avoid "also used "... ouput for single unwind info
 636      in object file.  */
 637   prev_unwinddata_rva = (bfd_vma) -1;
 638
 639   /* Do dump of pdata related xdata.  */
 640   for (i = 0; i < stop; i += onaline)
 641     {
 642       struct pex64_runtime_function rf;
 643
 644       if (i + PDATA_ROW_SIZE > stop)
 645         break;
 646
 647       pex64_get_runtime_function (abfd, &rf, &pdata[i]);
 648
 649       if (rf.rva_BeginAddress == 0 && rf.rva_EndAddress == 0
 650           && rf.rva_UnwindData == 0)
 651         /* We are probably into the padding of the section now.  */
 652         break;
 653       if (i == 0)
 654         fprintf (file, _("\nDump of %s\n"), xdata_section->name);
 655
 656       fputc (' ', file);
 657       fprintf_vma (file, rf.rva_UnwindData + imagebase);
 658
 659       if (prev_unwinddata_rva == rf.rva_UnwindData)
 660         {
 661           /* Do not dump again the xdata for the same entry.  */
 662           fprintf (file, " also used for function at ");
 663           fprintf_vma (file, rf.rva_BeginAddress + imagebase);
 664           fputc ('\n', file);
 665           continue;
 666         }
 667       else
 668         prev_unwinddata_rva = rf.rva_UnwindData;
 669
 670       fprintf (file, " (rva: %08x): ",
 671                (unsigned int) rf.rva_UnwindData);
 672       fprintf_vma (file, rf.rva_BeginAddress + imagebase);
 673       fprintf (file, " - ");
 674       fprintf_vma (file, rf.rva_EndAddress + imagebase);
 675       fputc ('\n', file);
 676
 677       if (rf.rva_UnwindData != 0 || virt_size_is_zero)
 678         {
 679           if (PEX64_IS_RUNTIME_FUNCTION_CHAINED (&rf))
 680             {
 681               bfd_vma altent = PEX64_GET_UNWINDDATA_UNIFIED_RVA (&rf);
 682               bfd_vma pdata_vma = bfd_get_section_vma (abfd, pdata_section);
 683               struct pex64_runtime_function arf;
 684
 685               fprintf (file, "\t shares information with ");
 686               altent += imagebase;
 687
 688               if (altent >= pdata_vma
 689                   && (altent + PDATA_ROW_SIZE <= pdata_vma
 690                       + pei_section_data (abfd, pdata_section)->virt_size))
 691                 {
 692                   pex64_get_runtime_function
 693                     (abfd, &arf, &pdata[altent - pdata_vma]);
 694                   fprintf (file, "pdata element at 0x");
 695                   fprintf_vma (file, arf.rva_UnwindData);
 696                 }
 697               else
 698                 fprintf (file, "unknown pdata element");
 699               fprintf (file, ".\n");
 700             }
 701           else
 702             {
 703               bfd_vma *p;
 704
 705               /* Search for the current entry in the sorted array.  */
 706               p = (bfd_vma *)
 707                   bsearch (&rf.rva_UnwindData, xdata_arr,
 708                            (size_t) xdata_arr_cnt, sizeof (bfd_vma),
 709                            sort_xdata_arr);
 710
 711               /* Advance to the next pointer into the xdata section.  We may
 712                  have shared xdata entries, which will result in a string of
 713                  identical pointers in the array; advance past all of them.  */
 714               while (p[0] <= rf.rva_UnwindData)
 715                 ++p;
 716
 717               if (p[0] == ~((bfd_vma) 0))
 718                 p = NULL;
 719
 720               pex64_dump_xdata (file, abfd, xdata_section, xdata, p, &rf);
 721             }
 722         }
 723     }
 724
 725  done:
 726   free (pdata);
 727   free (xdata_arr);
 728   free (xdata);
 729
 730   return TRUE;
 731 }
 732
 733 /* Static counter of number of found pdata sections.  */
 734 static bfd_boolean pdata_count;
 735
 736 /* Functionn prototype.  */
 737 bfd_boolean pex64_bfd_print_pdata (bfd *, void *);
 738
 739 /* Helper function for bfd_map_over_section.  */
 740 static void
 741 pex64_print_all_pdata_sections (bfd *abfd, asection *pdata, void *obj)
 742 {
 743   if (CONST_STRNEQ (pdata->name, ".pdata"))
 744     {
 745       if (pex64_bfd_print_pdata_section (abfd, obj, pdata))
 746         pdata_count++;
 747     }
 748 }
 749
 750 bfd_boolean
 751 pex64_bfd_print_pdata (bfd *abfd, void *vfile)
 752 {
 753   asection *pdata_section = bfd_get_section_by_name (abfd, ".pdata");
 754
 755   if (pdata_section)
 756     return pex64_bfd_print_pdata_section (abfd, vfile, pdata_section);
 757
 758   pdata_count = 0;
 759   bfd_map_over_sections (abfd, pex64_print_all_pdata_sections, vfile);
 760   return (pdata_count > 0);
 761 }
 762
 763 #define bfd_pe_print_pdata   pex64_bfd_print_pdata
 764 #define bfd_coff_std_swap_table bfd_coff_pei_swap_table
 765
 766 #include "coff-x86_64.c"