1 /* BFD back-end for Intel 386 PE IMAGE COFF files.
2    Copyright 2006, 2007, 2009 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_64pei_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 static const char *pex_regs[16] = {
80   "rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi",
81   "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"
82 };
83 
84 static void
pex64_get_runtime_function(bfd * abfd,struct pex64_runtime_function * rf,const void * data)85 pex64_get_runtime_function (bfd *abfd, struct pex64_runtime_function *rf,
86 			    const void *data)
87 {
88   const struct external_pex64_runtime_function *ex_rf =
89     (const struct external_pex64_runtime_function *) data;
90   rf->rva_BeginAddress = bfd_get_32 (abfd, ex_rf->rva_BeginAddress);
91   rf->rva_EndAddress = bfd_get_32 (abfd, ex_rf->rva_EndAddress);
92   rf->rva_UnwindData =	bfd_get_32 (abfd, ex_rf->rva_UnwindData);
93   rf->isChained = PEX64_IS_RUNTIME_FUNCTION_CHAINED (rf);
94   rf->rva_UnwindData = PEX64_GET_UNWINDDATA_UNIFIED_RVA (rf);
95 }
96 
97 static void
pex64_get_unwind_info(bfd * abfd,struct pex64_unwind_info * ui,void * data)98 pex64_get_unwind_info (bfd *abfd, struct pex64_unwind_info *ui, void *data)
99 {
100   struct external_pex64_unwind_info *ex_ui =
101     (struct external_pex64_unwind_info *) data;
102   bfd_byte *ex_dta = (bfd_byte *) data;
103 
104   memset (ui, 0, sizeof (struct pex64_unwind_info));
105   ui->Version = PEX64_UWI_VERSION (ex_ui->Version_Flags);
106   ui->Flags = PEX64_UWI_FLAGS (ex_ui->Version_Flags);
107   ui->SizeOfPrologue = (bfd_vma) ex_ui->SizeOfPrologue;
108   ui->CountOfCodes = (bfd_vma) ex_ui->CountOfCodes;
109   ui->FrameRegister = PEX64_UWI_FRAMEREG (ex_ui->FrameRegisterOffset);
110   ui->FrameOffset = PEX64_UWI_FRAMEOFF (ex_ui->FrameRegisterOffset);
111   ui->sizeofUnwindCodes = PEX64_UWI_SIZEOF_UWCODE_ARRAY (ui->CountOfCodes);
112   ui->SizeOfBlock = ui->sizeofUnwindCodes + 4;
113   ui->rawUnwindCodes = &ex_dta[4];
114   ex_dta += ui->SizeOfBlock;
115   switch (ui->Flags)
116     {
117     case UNW_FLAG_CHAININFO:
118       ui->rva_FunctionEntry = bfd_get_32 (abfd, ex_dta);
119       ui->SizeOfBlock += 4;
120       return;
121     default:
122       return;
123     }
124 }
125 
126 static void
pex64_xdata_print_uwd_codes(FILE * file,struct pex64_unwind_info * ui,bfd_vma pc_addr)127 pex64_xdata_print_uwd_codes (FILE *file, struct pex64_unwind_info *ui,
128 			     bfd_vma pc_addr)
129 {
130   bfd_vma i;
131   bfd_vma tmp = 0;
132   const bfd_byte *insns[256];
133   bfd_vma insns_count = 0;
134   const bfd_byte *dta = ui->rawUnwindCodes;
135 
136   if (ui->CountOfCodes == 0 || !dta)
137     return;
138 
139   /* Sort array ascending. Note: it is stored in reversed order.  */
140   for (i = 0; i < ui->CountOfCodes; i++)
141     {
142       const bfd_byte *t;
143 
144       t = insns[insns_count++] = &dta[i * 2];
145       switch (PEX64_UNWCODE_CODE (t[1]))
146 	{
147 	case UWOP_PUSH_NONVOL:
148 	case UWOP_ALLOC_SMALL:
149 	case UWOP_SET_FPREG:
150 	case UWOP_PUSH_MACHFRAME:
151 	  break;
152 	case UWOP_ALLOC_LARGE:
153 	  if (PEX64_UNWCODE_INFO (t[1]) == 0)
154 	    {
155 	      i += 1;
156 	      break;
157 	    }
158 	  else if (PEX64_UNWCODE_INFO (t[1]) == 1)
159 	    {
160 	      i += 2;
161 	      break;
162 	    }
163 	  /* fall through.  */
164 	default:
165 	  fprintf (file, "\t contains unknown code (%u).\n",
166 		   (unsigned int) PEX64_UNWCODE_CODE (t[1]));
167 	  return;
168 	case UWOP_SAVE_NONVOL:
169 	case UWOP_SAVE_XMM:
170 	case UWOP_SAVE_XMM128:
171 	  i++;
172 	  break;
173 	case UWOP_SAVE_NONVOL_FAR:
174 	case UWOP_SAVE_XMM_FAR:
175 	case UWOP_SAVE_XMM128_FAR:
176 	  i += 2;
177 	  break;
178 	}
179     }
180   fprintf (file, "\t At pc 0x");
181   fprintf_vma (file, pc_addr);
182   fprintf (file, " there are the following saves (in logical order).\n");
183   for (i = insns_count; i > 0;)
184     {
185       --i;
186       dta = insns[i];
187       fprintf (file, "\t  insn ends at pc+0x%02x: ", (unsigned int) dta[0]);
188       switch (PEX64_UNWCODE_CODE (dta[1]))
189 	{
190 	case UWOP_PUSH_NONVOL:
191 	  fprintf (file, "push %s.\n", pex_regs[PEX64_UNWCODE_INFO (dta[1])]);
192 	  break;
193 	case UWOP_ALLOC_LARGE:
194 	  if (PEX64_UNWCODE_INFO (dta[1]) == 0)
195 	    {
196 	      tmp = (bfd_vma) (*((unsigned short *) &dta[2]));
197 	      tmp *= 8;
198 	    }
199 	  else
200 	    tmp = (bfd_vma) (*((unsigned int *)&dta[2]));
201 	  fprintf (file, "save stack region of size 0x");
202 	  fprintf_vma (file, tmp);
203 	  fprintf (file,".\n");
204 	  break;
205 	case UWOP_ALLOC_SMALL:
206 	  tmp = (bfd_vma) PEX64_UNWCODE_INFO (dta[1]);
207 	  tmp += 1;
208 	  tmp *= 8;
209 	  fprintf (file, "save stack region of size 0x");
210 	  fprintf_vma (file, tmp);
211 	  fprintf (file,".\n");
212 	  break;
213 	case UWOP_SET_FPREG:
214 	  tmp = (bfd_vma) PEX64_UNWCODE_INFO (dta[1]);
215 	  tmp *= 16;
216 	  fprintf (file, "FPReg = (FrameReg) + 0x");
217 	  fprintf_vma (file, tmp);
218 	  fprintf (file, ".\n");
219 	  break;
220 	case UWOP_SAVE_NONVOL:
221 	  fprintf (file, "mov %s at 0x",
222 		   pex_regs[PEX64_UNWCODE_INFO (dta[1])]);
223 	  tmp = (bfd_vma) (*((unsigned short *) &dta[2]));
224 	  tmp *= 8;
225 	  fprintf_vma (file, tmp);
226 	  fprintf (file, ".\n");
227 	  break;
228 	case UWOP_SAVE_NONVOL_FAR:
229 	  fprintf (file, "mov %s at 0x",
230 		   pex_regs[PEX64_UNWCODE_INFO (dta[1])]);
231 	  tmp = (bfd_vma) (*((unsigned int *) &dta[2]));
232 	  fprintf_vma (file, tmp);
233 	  fprintf (file, ".\n");
234 	  break;
235 	case UWOP_SAVE_XMM:
236 	  tmp = (bfd_vma) (*((unsigned short *) &dta[2]));
237 	  tmp *= 8;
238 	  fprintf (file, "mov mm%u at 0x",
239 		   (unsigned int) PEX64_UNWCODE_INFO (dta[1]));
240 	  fprintf_vma (file, tmp);
241 	  fprintf (file, ".\n");
242 	  break;
243 	case UWOP_SAVE_XMM_FAR:
244 	  tmp = (bfd_vma) (*((unsigned int *) &dta[2]));
245 	  fprintf (file, "mov mm%u at 0x",
246 		   (unsigned int) PEX64_UNWCODE_INFO (dta[1]));
247 	  fprintf_vma (file, tmp);
248 	  fprintf (file, ".\n");
249 	  break;
250 	case UWOP_SAVE_XMM128:
251 	  tmp = (bfd_vma) (*((unsigned short *) &dta[2]));
252 	  tmp *= 16;
253 	  fprintf (file, "mov xmm%u at 0x",
254 		   (unsigned int) PEX64_UNWCODE_INFO ( dta[1]));
255 	  fprintf_vma (file, tmp);
256 	  fprintf (file, ".\n");
257 	  break;
258 	case UWOP_SAVE_XMM128_FAR:
259 	  tmp = (bfd_vma) (*((unsigned int *) &dta[2]));
260 	  fprintf (file, "mov xmm%u at 0x",
261 		   (unsigned int) PEX64_UNWCODE_INFO (dta[1]));
262 	  fprintf_vma (file, tmp);
263 	  fprintf (file, ".\n");
264 	  break;
265 	case UWOP_PUSH_MACHFRAME:
266 	  fprintf (file, "interrupt entry (SS, old RSP, EFLAGS, CS, RIP");
267 	  if (PEX64_UNWCODE_INFO (dta[1]) == 0)
268 	    {
269 	      fprintf (file, ")");
270 	    }
271 	  else if (PEX64_UNWCODE_INFO (dta[1]) == 1)
272 	    {
273 	      fprintf (file, ",ErrorCode)");
274 	    }
275 	  else
276 	    fprintf (file, ", unknown(%u))",
277 		     (unsigned int) PEX64_UNWCODE_INFO (dta[1]));
278 	  fprintf (file,".\n");
279 	  break;
280 	default:
281 	  fprintf (file, "unknown code %u.\n",
282 		   (unsigned int) PEX64_UNWCODE_INFO (dta[1]));
283 	  break;
284       }
285     }
286 }
287 
288 static asection *
pex64_get_section_by_rva(bfd * abfd,bfd_vma addr,const char * sec_name)289 pex64_get_section_by_rva (bfd *abfd, bfd_vma addr, const char *sec_name)
290 {
291   asection *section = bfd_get_section_by_name (abfd, sec_name);
292   bfd_vma vsize;
293   bfd_size_type datasize = 0;
294 
295   if (section == NULL
296       || coff_section_data (abfd, section) == NULL
297       || pei_section_data (abfd, section) == NULL)
298     return NULL;
299   vsize = section->vma - pe_data (abfd)->pe_opthdr.ImageBase;
300   datasize = section->size;
301   if (!datasize || vsize > addr || (vsize + datasize) < addr)
302     return NULL;
303   return section;
304 }
305 
306 static void
pex64_dump_xdata(FILE * file,bfd * abfd,bfd_vma addr,bfd_vma pc_addr,bfd_vma * endx)307 pex64_dump_xdata (FILE *file, bfd *abfd, bfd_vma addr, bfd_vma pc_addr,
308 		  bfd_vma *endx)
309 {
310   asection *section = pex64_get_section_by_rva (abfd, addr, ".rdata");
311   bfd_vma vsize;
312   bfd_byte *data = NULL;
313   bfd_vma end_addr;
314 
315   if (!section)
316     section = pex64_get_section_by_rva (abfd, addr, ".data");
317   if (!section)
318     section = pex64_get_section_by_rva (abfd, addr, ".xdata");
319   if (!section)
320     {
321       section = pex64_get_section_by_rva (abfd, addr, ".pdata");
322       if (section)
323 	{
324 	  fprintf (file, "\t Shares information with pdata element at 0x");
325 	  fprintf_vma (file, addr + pe_data (abfd)->pe_opthdr.ImageBase);
326 	  fprintf (file, ".\n");
327 	}
328     }
329   if (!section)
330     return;
331 
332   vsize = section->vma - pe_data (abfd)->pe_opthdr.ImageBase;
333   addr -= vsize;
334 
335   if (endx)
336     end_addr = endx[0] - vsize;
337   else
338     end_addr = (section->rawsize != 0 ? section->rawsize : section->size);
339 
340   if (bfd_malloc_and_get_section (abfd, section, &data))
341     {
342       struct pex64_unwind_info ui;
343 
344       if (!data)
345 	return;
346 
347       pex64_get_unwind_info (abfd, &ui, &data[addr]);
348 
349       if (ui.Version != 1)
350 	{
351 	  fprintf (file, "\tVersion %u (unknown).\n", (unsigned int) ui.Version);
352 	  return;
353 	}
354 
355       fprintf (file, "\tFlags: ");
356       switch (ui.Flags)
357 	{
358 	case UNW_FLAG_NHANDLER:
359 	  fprintf (file, "UNW_FLAG_NHANDLER");
360 	  break;
361 	case UNW_FLAG_EHANDLER:
362 	  fprintf (file, "UNW_FLAG_EHANDLER");
363 	  break;
364 	case UNW_FLAG_UHANDLER:
365 	  fprintf (file, "UNW_FLAG_UHANDLER");
366 	  break;
367 	case UNW_FLAG_FHANDLER:
368 	  fprintf (file, "UNW_FLAG_FHANDLER = (UNW_FLAG_EHANDLER | UNW_FLAG_UHANDLER)");
369 	  break;
370 	case UNW_FLAG_CHAININFO:
371 	  fprintf (file, "UNW_FLAG_CHAININFO");
372 	  break;
373 	default:
374 	  fprintf (file, "unknown flags value 0x%x", (unsigned int) ui.Flags);
375 	  break;
376 	}
377       fprintf (file, ".\n");
378       if (ui.CountOfCodes != 0)
379 	fprintf (file, "\tEntry has %u codes.", (unsigned int) ui.CountOfCodes);
380       fprintf (file, "\tPrologue size: %u, Frame offset = 0x%x.\n",
381 	       (unsigned int) ui.SizeOfPrologue, (unsigned int) ui.FrameOffset);
382       fprintf (file, "\tFrame register is %s.\n",
383 	ui.FrameRegister == 0 ? "none"
384 			      : pex_regs[(unsigned int) ui.FrameRegister]);
385 
386       pex64_xdata_print_uwd_codes (file, &ui, pc_addr);
387 
388       /* Now we need end of this xdata block.  */
389       addr += ui.SizeOfBlock;
390       if (addr < end_addr)
391         {
392 	  unsigned int i;
393 	  fprintf (file,"\tUser data:\n");
394 	  for (i = 0; addr < end_addr; addr += 1, i++)
395 	    {
396 	      if ((i & 15) == 0)
397 	        fprintf (file, "\t  %03x:", i);
398 	      fprintf (file, " %02x", data[addr]);
399 	      if ((i & 15) == 15)
400 	        fprintf (file, "\n");
401 	    }
402 	  if ((i & 15) != 0)
403 	    fprintf (file, "\n");
404         }
405     }
406   if (data != NULL)
407     free (data);
408 }
409 
410 static int
sort_xdata_arr(const void * l,const void * r)411 sort_xdata_arr (const void *l, const void *r)
412 {
413   const bfd_vma *lp = (const bfd_vma *) l;
414   const bfd_vma *rp = (const bfd_vma *) r;
415 
416   if (*lp == *rp)
417     return 0;
418   return (*lp < *rp ? -1 : 1);
419 }
420 
421 static bfd_boolean
pex64_bfd_print_pdata(bfd * abfd,void * vfile)422 pex64_bfd_print_pdata (bfd *abfd, void *vfile)
423 {
424   FILE *file = (FILE *) vfile;
425   bfd_byte *data = NULL;
426   asection *section = bfd_get_section_by_name (abfd, ".pdata");
427   bfd_size_type datasize = 0;
428   bfd_size_type i;
429   bfd_size_type stop;
430   bfd_vma prev_beginaddress = 0;
431   int onaline = PDATA_ROW_SIZE;
432   int seen_error = 0;
433   bfd_vma *xdata_arr;
434   int xdata_arr_cnt;
435 
436   if (section == NULL
437       || coff_section_data (abfd, section) == NULL
438       || pei_section_data (abfd, section) == NULL)
439     return TRUE;
440 
441   stop = pei_section_data (abfd, section)->virt_size;
442   if ((stop % onaline) != 0)
443     fprintf (file,
444 	     _("warning: .pdata section size (%ld) is not a multiple of %d\n"),
445 	     (long) stop, onaline);
446 
447   fprintf (file,
448 	   _("\nThe Function Table (interpreted .pdata section contents)\n"));
449 
450   fprintf (file, _("vma:\t\t\tBeginAddress\t EndAddress\t  UnwindData\n"));
451 
452   datasize = section->size;
453   if (datasize == 0)
454     return TRUE;
455 
456   if (!bfd_malloc_and_get_section (abfd, section, &data))
457     {
458       if (data != NULL)
459 	free (data);
460       return FALSE;
461     }
462 
463   xdata_arr = (bfd_vma *) xmalloc (sizeof (bfd_vma) * ((stop / onaline) + 1));
464   xdata_arr_cnt = 0;
465   /* Do sanity check of pdata.  */
466   for (i = 0; i < stop; i += onaline)
467     {
468       struct pex64_runtime_function rf;
469 
470       if (i + PDATA_ROW_SIZE > stop)
471 	break;
472       pex64_get_runtime_function (abfd, &rf, &data[i]);
473 
474       if (rf.rva_BeginAddress == 0 && rf.rva_EndAddress == 0
475 	  && rf.rva_UnwindData == 0)
476 	/* We are probably into the padding of the section now.  */
477 	break;
478       fputc (' ', file);
479       fprintf_vma (file, i + section->vma);
480       fprintf (file, ":\t");
481       fprintf_vma (file, rf.rva_BeginAddress);
482       fputc (' ', file);
483       fprintf_vma (file, rf.rva_EndAddress);
484       fputc (' ', file);
485       fprintf_vma (file, rf.rva_UnwindData);
486       fprintf (file, "\n");
487       if (i != 0 && rf.rva_BeginAddress <= prev_beginaddress)
488 	{
489 	  seen_error = 1;
490 	  fprintf (file, "  has %s begin address as predecessor\n",
491 	    (rf.rva_BeginAddress < prev_beginaddress ? "smaller" : "same"));
492         }
493       prev_beginaddress = rf.rva_BeginAddress;
494       /* Now we check for negative addresses.  */
495       if ((prev_beginaddress & 0x80000000) != 0)
496 	{
497 	  seen_error = 1;
498 	  fprintf (file, "  has negative begin address\n");
499 	}
500       if ((rf.rva_EndAddress & 0x80000000) != 0)
501 	{
502 	  seen_error = 1;
503 	  fprintf (file, "  has negative end address\n");
504 	}
505       if ((rf.rva_UnwindData & 0x80000000) != 0)
506 	{
507 	  seen_error = 1;
508 	  fprintf (file, "  has negative unwind address\n");
509 	}
510       if (rf.rva_UnwindData && !rf.isChained)
511         xdata_arr[xdata_arr_cnt++] = rf.rva_UnwindData;
512     }
513 
514   if (seen_error)
515     {
516       free (data);
517       free (xdata_arr);
518 
519       return TRUE;
520     }
521 
522   /* Add end of list marker.  */
523   xdata_arr[xdata_arr_cnt++] = ~((bfd_vma) 0);
524 
525   /* Sort start RVAs of xdata.  */
526   if (xdata_arr_cnt > 1)
527     qsort (xdata_arr, (size_t) xdata_arr_cnt, sizeof (bfd_vma),
528 	   sort_xdata_arr);
529 
530   /* Do dump of pdata related xdata.  */
531 
532   for (i = 0; i < stop; i += onaline)
533     {
534       struct pex64_runtime_function rf;
535 
536       if (i + PDATA_ROW_SIZE > stop)
537 	break;
538       pex64_get_runtime_function (abfd, &rf, &data[i]);
539 
540       if (rf.rva_BeginAddress == 0 && rf.rva_EndAddress == 0
541 	  && rf.rva_UnwindData == 0)
542 	/* We are probably into the padding of the section now.  */
543 	break;
544       if (i == 0)
545         fprintf (file, "\nDump of .xdata\n");
546       fputc (' ', file);
547       fprintf_vma (file, rf.rva_UnwindData);
548       fprintf (file, ":\n");
549 
550       rf.rva_BeginAddress += pe_data (abfd)->pe_opthdr.ImageBase;
551       rf.rva_EndAddress += pe_data (abfd)->pe_opthdr.ImageBase;
552 
553       if (rf.rva_UnwindData != 0)
554 	{
555 	  if (rf.isChained)
556 	    {
557 	      fprintf (file, "\t shares information with pdata element at 0x");
558 	      fprintf_vma (file, rf.rva_UnwindData);
559 	      fprintf (file, ".\n");
560 	    }
561 	  else
562 	    {
563 	      bfd_vma *p;
564 
565 	      /* Search for the current entry in the sorted array.  */
566 	      p = (bfd_vma *)
567 	          bsearch (&rf.rva_UnwindData, xdata_arr,
568 			   (size_t) xdata_arr_cnt, sizeof (bfd_vma),
569 			   sort_xdata_arr);
570 
571 	      /* Advance to the next pointer into the xdata section.  We may
572 		 have shared xdata entries, which will result in a string of
573 		 identical pointers in the array; advance past all of them.  */
574 	      while (p[0] <= rf.rva_UnwindData)
575 		++p;
576 	      if (p[0] == ~((bfd_vma) 0))
577 		p = NULL;
578 
579 	      pex64_dump_xdata (file, abfd, rf.rva_UnwindData,
580 				rf.rva_BeginAddress, p);
581 	    }
582 	}
583     }
584 
585   free (data);
586   free (xdata_arr);
587 
588   return TRUE;
589 }
590 
591 #define bfd_pe_print_pdata   pex64_bfd_print_pdata
592 
593 #include "coff-x86_64.c"
594