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99ad8390 1/* BFD back-end for Intel 386 PE IMAGE COFF files.
88183869 2 Copyright 2006, 2007, 2009 Free Software Foundation, Inc.
99ad8390
NC		 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
cd123cb7 8 the Free Software Foundation; either version 3 of the License, or
99ad8390
NC		 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
cd123cb7
NC		 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA.
99ad8390
NC		 20
21 Written by Kai Tietz, OneVision Software GmbH&CoKg. */
22
99ad8390 23#include "sysdep.h"
3db64b00 24#include "bfd.h"
99ad8390
NC		 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#define TARGET_UNDERSCORE '_'
88183869
DK		 33/* Long section names not allowed in executable images, only object files. */
34#define COFF_LONG_SECTION_NAMES 0
99ad8390
NC		 35#define COFF_SUPPORT_GNU_LINKONCE
36#define COFF_LONG_FILENAMES
e48570bb 37#define PDATA_ROW_SIZE (3 * 4)
99ad8390
NC		 38
39#define COFF_SECTION_ALIGNMENT_ENTRIES \
40{ COFF_SECTION_NAME_EXACT_MATCH (".bss"), \
41 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
42{ COFF_SECTION_NAME_EXACT_MATCH (".data"), \
43 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
44{ COFF_SECTION_NAME_EXACT_MATCH (".rdata"), \
45 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
46{ COFF_SECTION_NAME_EXACT_MATCH (".text"), \
47 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
48{ COFF_SECTION_NAME_PARTIAL_MATCH (".idata"), \
49 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
50{ COFF_SECTION_NAME_EXACT_MATCH (".pdata"), \
51 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
52{ COFF_SECTION_NAME_PARTIAL_MATCH (".debug"), \
53 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \
54{ COFF_SECTION_NAME_PARTIAL_MATCH (".gnu.linkonce.wi."), \
55 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }
56
e48570bb
DK		 57/* Note we have to make sure not to include headers twice.
58 Not all headers are wrapped in #ifdef guards, so we define
59 PEI_HEADERS to prevent double including in coff-x86_64.c */
60#define PEI_HEADERS
61#include "sysdep.h"
62#include "bfd.h"
63#include "libbfd.h"
64#include "coff/x86_64.h"
65#include "coff/internal.h"
66#include "coff/pe.h"
67#include "libcoff.h"
68#include "libpei.h"
69#include "libiberty.h"
70
71#undef AOUTSZ
72#define AOUTSZ PEPAOUTSZ
73#define PEAOUTHDR PEPAOUTHDR
74
75static const char *pex_regs[16] = {
76 "rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi",
77 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"
78};
79
80static void
81pex64_get_runtime_function (bfd *abfd, struct pex64_runtime_function *rf,
82 const void *data)
83{
84 const struct external_pex64_runtime_function *ex_rf =
85 (const struct external_pex64_runtime_function *) data;
86 rf->rva_BeginAddress = bfd_get_32 (abfd, ex_rf->rva_BeginAddress);
87 rf->rva_EndAddress = bfd_get_32 (abfd, ex_rf->rva_EndAddress);
88 rf->rva_UnwindData = bfd_get_32 (abfd, ex_rf->rva_UnwindData);
89 rf->isChained = PEX64_IS_RUNTIME_FUNCTION_CHAINED (rf);
90 rf->rva_UnwindData = PEX64_GET_UNWINDDATA_UNIFIED_RVA (rf);
91}
92
93static void
94pex64_get_unwind_info (bfd *abfd, struct pex64_unwind_info *ui, void *data)
95{
96 struct external_pex64_unwind_info *ex_ui =
97 (struct external_pex64_unwind_info *) data;
98 bfd_byte *ex_dta = (bfd_byte *) data;
99
100 memset (ui, 0, sizeof (struct pex64_unwind_info));
101 ui->Version = PEX64_UWI_VERSION (ex_ui->Version_Flags);
102 ui->Flags = PEX64_UWI_FLAGS (ex_ui->Version_Flags);
103 ui->SizeOfPrologue = (bfd_vma) ex_ui->SizeOfPrologue;
104 ui->CountOfCodes = (bfd_vma) ex_ui->CountOfCodes;
105 ui->FrameRegister = PEX64_UWI_FRAMEREG (ex_ui->FrameRegisterOffset);
106 ui->FrameOffset = PEX64_UWI_FRAMEOFF (ex_ui->FrameRegisterOffset);
107 ui->sizeofUnwindCodes = PEX64_UWI_SIZEOF_UWCODE_ARRAY (ui->CountOfCodes);
108 ui->SizeOfBlock = ui->sizeofUnwindCodes + 4;
109 ui->rawUnwindCodes = &ex_dta[4];
110 ex_dta += ui->SizeOfBlock;
111 switch (ui->Flags)
112 {
113 case UNW_FLAG_EHANDLER:
114 ui->rva_ExceptionHandler = bfd_get_32 (abfd, ex_dta);
115 break;
116 case UNW_FLAG_UHANDLER:
117 ui->rva_TerminationHandler = bfd_get_32 (abfd, ex_dta);
118 break;
119 case UNW_FLAG_FHANDLER:
120 ui->rva_FrameHandler = bfd_get_32 (abfd, ex_dta);
121 ui->FrameHandlerArgument = bfd_get_32 (abfd, ex_dta + 4);
122 ui->SizeOfBlock += 8;
123 return;
124 case UNW_FLAG_CHAININFO:
125 ui->rva_FunctionEntry = bfd_get_32 (abfd, ex_dta);
126 ui->SizeOfBlock += 4;
127 return;
128 default:
129 return;
130 }
131 ex_dta += 4;
132 ui->SizeOfBlock += 8;
133 ui->CountOfScopes = bfd_get_32 (abfd, ex_dta);
134 ex_dta += 4;
135 ui->rawScopeEntries = ex_dta;
136 ui->SizeOfBlock += (ui->CountOfScopes * PEX64_SCOPE_ENTRY_SIZE);
137}
138
139static void
140pex64_get_scope_entry (bfd *abfd, struct pex64_scope_entry *se,
141 bfd_vma idx, const bfd_byte *x)
142{
143 const struct external_pex64_scope_entry *ex_se;
144 x += (idx * PEX64_SCOPE_ENTRY_SIZE);
145 ex_se = (const struct external_pex64_scope_entry *) x;
146 memset (se, 0, sizeof (struct pex64_scope_entry));
147 se->rva_BeginAddress = bfd_get_32 (abfd, ex_se->rva_BeginAddress);
148 se->rva_EndAddress = bfd_get_32 (abfd, ex_se->rva_EndAddress);
149 se->rva_HandlerAddress = bfd_get_32 (abfd, ex_se->rva_HandlerAddress);
150 se->rva_JumpAddress = bfd_get_32 (abfd, ex_se->rva_JumpAddress);
151}
152
153static void
154pex64_xdata_print_uwd_codes (FILE *file, struct pex64_unwind_info *ui,
155 bfd_vma pc_addr)
156{
157 bfd_vma i;
158 bfd_vma tmp = 0;
159 const bfd_byte *insns[256];
160 bfd_vma insns_count = 0;
161 const bfd_byte *dta = ui->rawUnwindCodes;
162
163 if (ui->CountOfCodes == 0 || !dta)
164 return;
165
166 /* Sort array ascending. Note: it is stored in reversed order. */
167 for (i = 0; i < ui->CountOfCodes; i++)
168 {
169 const bfd_byte *t;
170
171 t = insns[insns_count++] = &dta[i * 2];
172 switch (PEX64_UNWCODE_CODE (t[1]))
173 {
174 case UWOP_PUSH_NONVOL:
175 case UWOP_ALLOC_SMALL:
176 case UWOP_SET_FPREG:
177 case UWOP_PUSH_MACHFRAME:
178 break;
179 case UWOP_ALLOC_LARGE:
180 if (PEX64_UNWCODE_INFO (t[1]) == 0)
181 {
182 i += 1;
183 break;
184 }
185 else if (PEX64_UNWCODE_INFO (t[1]) == 1)
186 {
187 i += 2;
188 break;
189 }
190 /* fall through. */
191 default:
192 fprintf (file, "\t contains unknown code (%u).\n",
193 (unsigned int) PEX64_UNWCODE_CODE (t[1]));
194 return;
195 case UWOP_SAVE_NONVOL:
196 case UWOP_SAVE_XMM:
197 case UWOP_SAVE_XMM128:
198 i++;
199 break;
200 case UWOP_SAVE_NONVOL_FAR:
201 case UWOP_SAVE_XMM_FAR:
202 case UWOP_SAVE_XMM128_FAR:
203 i += 2;
204 break;
205 }
206 }
207 fprintf (file, "\t At pc 0x");
208 fprintf_vma (file, pc_addr);
209 fprintf (file, " there are the following saves (in logical order).\n");
210 for (i = insns_count; i > 0;)
211 {
212 --i;
213 dta = insns[i];
214 fprintf (file, "\t insn ends at pc+0x%02x: ", (unsigned int) dta[0]);
215 switch (PEX64_UNWCODE_CODE (dta[1]))
216 {
217 case UWOP_PUSH_NONVOL:
218 fprintf (file, "push %s.\n", pex_regs[PEX64_UNWCODE_INFO (dta[1])]);
219 break;
220 case UWOP_ALLOC_LARGE:
221 if (PEX64_UNWCODE_INFO (dta[1]) == 0)
222 {
223 tmp = (bfd_vma) (*((unsigned short *) &dta[2]));
224 tmp *= 8;
225 }
226 else
227 tmp = (bfd_vma) (*((unsigned int *)&dta[2]));
228 fprintf (file, "save stack region of size 0x");
229 fprintf_vma (file, tmp);
230 fprintf (file,".\n");
231 break;
232 case UWOP_ALLOC_SMALL:
233 tmp = (bfd_vma) PEX64_UNWCODE_INFO (dta[1]);
234 tmp += 1;
235 tmp *= 8;
236 fprintf (file, "save stack region of size 0x");
237 fprintf_vma (file, tmp);
238 fprintf (file,".\n");
239 break;
240 case UWOP_SET_FPREG:
241 tmp = (bfd_vma) PEX64_UNWCODE_INFO (dta[1]);
242 tmp *= 16;
243 fprintf (file, "FPReg = (FrameReg) + 0x");
244 fprintf_vma (file, tmp);
245 fprintf (file, ".\n");
246 break;
247 case UWOP_SAVE_NONVOL:
248 fprintf (file, "mov %s at 0x",
249 pex_regs[PEX64_UNWCODE_INFO (dta[1])]);
250 tmp = (bfd_vma) (*((unsigned short *) &dta[2]));
251 tmp *= 8;
252 fprintf_vma (file, tmp);
253 fprintf (file, ".\n");
254 break;
255 case UWOP_SAVE_NONVOL_FAR:
256 fprintf (file, "mov %s at 0x",
257 pex_regs[PEX64_UNWCODE_INFO (dta[1])]);
258 tmp = (bfd_vma) (*((unsigned int *) &dta[2]));
259 fprintf_vma (file, tmp);
260 fprintf (file, ".\n");
261 break;
262 case UWOP_SAVE_XMM:
263 tmp = (bfd_vma) (*((unsigned short *) &dta[2]));
264 tmp *= 8;
265 fprintf (file, "mov mm%u at 0x",
266 (unsigned int) PEX64_UNWCODE_INFO (dta[1]));
267 fprintf_vma (file, tmp);
268 fprintf (file, ".\n");
269 break;
270 case UWOP_SAVE_XMM_FAR:
271 tmp = (bfd_vma) (*((unsigned int *) &dta[2]));
272 fprintf (file, "mov mm%u at 0x",
273 (unsigned int) PEX64_UNWCODE_INFO (dta[1]));
274 fprintf_vma (file, tmp);
275 fprintf (file, ".\n");
276 break;
277 case UWOP_SAVE_XMM128:
278 tmp = (bfd_vma) (*((unsigned short *) &dta[2]));
279 tmp *= 16;
280 fprintf (file, "mov xmm%u at 0x",
281 (unsigned int) PEX64_UNWCODE_INFO ( dta[1]));
282 fprintf_vma (file, tmp);
283 fprintf (file, ".\n");
284 break;
285 case UWOP_SAVE_XMM128_FAR:
286 tmp = (bfd_vma) (*((unsigned int *) &dta[2]));
287 fprintf (file, "mov xmm%u at 0x",
288 (unsigned int) PEX64_UNWCODE_INFO (dta[1]));
289 fprintf_vma (file, tmp);
290 fprintf (file, ".\n");
291 break;
292 case UWOP_PUSH_MACHFRAME:
293 fprintf (file, "interrupt entry (SS, old RSP, EFLAGS, CS, RIP");
294 if (PEX64_UNWCODE_INFO (dta[1]) == 0)
295 {
296 fprintf (file, ")");
297 }
298 else if (PEX64_UNWCODE_INFO (dta[1]) == 1)
299 {
300 fprintf (file, ",ErrorCode)");
301 }
302 else
303 fprintf (file, ", unknown(%u))",
304 (unsigned int) PEX64_UNWCODE_INFO (dta[1]));
305 fprintf (file,".\n");
306 break;
307 default:
308 fprintf (file, "unknown code %u.\n",
309 (unsigned int) PEX64_UNWCODE_INFO (dta[1]));
310 break;
311 }
312 }
313}
314
315static asection *
316pex64_get_section_by_rva (bfd *abfd, bfd_vma addr, const char *sec_name)
317{
318 asection *section = bfd_get_section_by_name (abfd, sec_name);
319 bfd_vma vsize;
320 bfd_size_type datasize = 0;
321
322 if (section == NULL
323 || coff_section_data (abfd, section) == NULL
324 || pei_section_data (abfd, section) == NULL)
325 return NULL;
326 vsize = section->vma - pe_data (abfd)->pe_opthdr.ImageBase;
327 datasize = section->size;
328 if (!datasize || vsize > addr || (vsize + datasize) < addr)
329 return NULL;
330 return section;
331}
332
333static void
334pex64_dump_xdata (FILE *file, bfd *abfd, bfd_vma addr, bfd_vma pc_addr)
335{
336 asection *section = pex64_get_section_by_rva (abfd, addr, ".rdata");
337 bfd_vma vsize;
338 bfd_byte *data = NULL;
339 bfd_vma i;
340
341 if (!section)
342 section = pex64_get_section_by_rva (abfd, addr, ".data");
343 if (!section)
344 section = pex64_get_section_by_rva (abfd, addr, ".xdata");
345 if (!section)
346 {
347 section = pex64_get_section_by_rva (abfd, addr, ".pdata");
348 if (section)
349 {
350 fprintf (file, "\t Shares information with pdata element at 0x");
351 fprintf_vma (file, addr + pe_data (abfd)->pe_opthdr.ImageBase);
352 fprintf (file, ".\n");
353 }
354 }
355 if (!section)
356 return;
357 vsize = section->vma - pe_data (abfd)->pe_opthdr.ImageBase;
358 addr -= vsize;
359 if (bfd_malloc_and_get_section (abfd, section, &data))
360 {
361 struct pex64_unwind_info ui;
362
363 if (!data)
364 return;
365
366 pex64_get_unwind_info (abfd, &ui, &data[addr]);
367
368 if (ui.Version != 1)
369 {
370 fprintf (file, "\tVersion %u (unknown).\n", (unsigned int) ui.Version);
371 return;
372 }
373
374 fprintf (file, "\tFlags: ");
375 switch (ui.Flags)
376 {
377 case UNW_FLAG_NHANDLER:
378 fprintf (file, "UNW_FLAG_NHANDLER");
379 break;
380 case UNW_FLAG_EHANDLER:
381 fprintf (file, "UNW_FLAG_EHANDLER");
382 break;
383 case UNW_FLAG_UHANDLER:
384 fprintf (file, "UNW_FLAG_UHANDLER");
385 break;
386 case UNW_FLAG_FHANDLER:
387 fprintf (file, "UNW_FLAG_FHANDLER = (UNW_FLAG_EHANDLER | UNW_FLAG_UHANDLER)");
388 break;
389 case UNW_FLAG_CHAININFO:
390 fprintf (file, "UNW_FLAG_CHAININFO");
391 break;
392 default:
393 fprintf (file, "unknown flags value 0x%x", (unsigned int) ui.Flags);
394 break;
395 }
396 fprintf (file, ".\n");
397 if (ui.CountOfCodes != 0)
398 fprintf (file, "\tEntry has %u codes.", (unsigned int) ui.CountOfCodes);
399 fprintf (file, "\tPrologue size: %u, Frame offset = 0x%x.\n",
400 (unsigned int) ui.SizeOfPrologue, (unsigned int) ui.FrameOffset);
401 fprintf (file, "\tFrame register is %s.\n",
402 ui.FrameRegister == 0 ? "CFA"
403 : pex_regs[(unsigned int) ui.FrameRegister]);
404
405 pex64_xdata_print_uwd_codes (file, &ui, pc_addr);
406
407 switch (ui.Flags)
408 {
409 case UNW_FLAG_NHANDLER:
410 return;
411 case UNW_FLAG_EHANDLER:
412 fprintf (file, "\texception_handler at 0x%x.\n", (unsigned int) ui.rva_ExceptionHandler);
413 break;
414 case UNW_FLAG_UHANDLER:
415 fprintf (file, "\ttermination_handler at 0x%x.\n", (unsigned int) ui.rva_TerminationHandler);
416 case UNW_FLAG_FHANDLER:
417 fprintf (file, "\tframe_handler at 0x%x.\n", (unsigned int) ui.rva_FrameHandler);
418 fprintf (file, "\t Argument for FrameHandler: 0x%x.\n",
419 (unsigned int) ui.FrameHandlerArgument);
420 return;
421 case UNW_FLAG_CHAININFO:
422 fprintf (file, "\t Function Entry: 0x%x\n", (unsigned int) ui.rva_FunctionEntry);
423 return;
424 default:
425 fprintf (file, "\t Unknown flag value of 0x%x\n", (unsigned int) ui.Flags);
426 return;
427 }
428 fprintf (file, "\t 0x%x # of scope(s)\n", (unsigned int) ui.CountOfScopes);
429 for (i = 0; i < ui.CountOfScopes; i++)
430 {
431 struct pex64_scope_entry se;
432 pex64_get_scope_entry (abfd, &se, i, ui.rawScopeEntries);
433 fprintf (file, "\t scope #%u: BeginAddress: 0x%x, EndAddress: 0x%x,"
434 "\n\t\tHandlerAddress:0x%x, JumpTarget:0x%x\n",
435 (unsigned int) (i + 1),
436 (unsigned int) se.rva_BeginAddress,
437 (unsigned int) se.rva_EndAddress,
438 (unsigned int) se.rva_HandlerAddress,
439 (unsigned int) se.rva_JumpAddress);
440 }
441 }
442 if (data != NULL)
443 free (data);
444}
445
446static bfd_boolean
447pex64_bfd_print_pdata (bfd *abfd, void *vfile)
448{
449 FILE *file = (FILE *) vfile;
450 bfd_byte *data = NULL;
451 asection *section = bfd_get_section_by_name (abfd, ".pdata");
452 bfd_size_type datasize = 0;
453 bfd_size_type i;
454 bfd_size_type start, stop;
455 int onaline = PDATA_ROW_SIZE;
456
457 if (section == NULL
458 || coff_section_data (abfd, section) == NULL
459 || pei_section_data (abfd, section) == NULL)
460 return TRUE;
461
462 stop = pei_section_data (abfd, section)->virt_size;
463 if ((stop % onaline) != 0)
464 fprintf (file,
465 _("warning: .pdata section size (%ld) is not a multiple of %d\n"),
466 (long) stop, onaline);
467
468 fprintf (file,
469 _("\nThe Function Table (interpreted .pdata section contents)\n"));
470
471 fprintf (file, _("vma:\t\t\tBeginAddress\t EndAddress\t UnwindData\n"));
472
473 datasize = section->size;
474 if (datasize == 0)
475 return TRUE;
476
477 if (!bfd_malloc_and_get_section (abfd, section, &data))
478 {
479 if (data != NULL)
480 free (data);
481 return FALSE;
482 }
483
484 start = 0;
485
486 for (i = start; i < stop; i += onaline)
487 {
488 struct pex64_runtime_function rf;
489
490 if (i + PDATA_ROW_SIZE > stop)
491 break;
492 pex64_get_runtime_function (abfd, &rf, &data[i]);
493
494 if (rf.rva_BeginAddress == 0 && rf.rva_EndAddress == 0
495 && rf.rva_UnwindData == 0)
496 /* We are probably into the padding of the section now. */
497 break;
498
499 fputc (' ', file);
500 fprintf_vma (file, i + section->vma);
501 fprintf (file, ":\t");
502 rf.rva_BeginAddress += pe_data (abfd)->pe_opthdr.ImageBase;
503 fprintf_vma (file, rf.rva_BeginAddress);
504 fputc (' ', file);
505 rf.rva_EndAddress += pe_data (abfd)->pe_opthdr.ImageBase;
506 fprintf_vma (file, rf.rva_EndAddress);
507 fputc (' ', file);
508 fprintf_vma (file, rf.rva_UnwindData);
509 fprintf (file, "\n");
510
511 if (rf.rva_UnwindData != 0)
512 {
513 if (rf.isChained)
514 {
515 fprintf (file, "\t shares information with pdata element at 0x");
516 fprintf_vma (file, rf.rva_UnwindData + pe_data (abfd)->pe_opthdr.ImageBase);
517 fprintf (file, ".\n");
518 }
519 else
520 pex64_dump_xdata (file, abfd, rf.rva_UnwindData, rf.rva_BeginAddress);
521 }
522 }
523
524 free (data);
525
526 return TRUE;
527}
528
529#define bfd_pe_print_pdata pex64_bfd_print_pdata
530
99ad8390 531#include "coff-x86_64.c"
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