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55e3d2f6 A |
1 | /* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*- |
2 | * | |
afe874b1 | 3 | * Copyright (c) 2008-2011 Apple Inc. All rights reserved. |
55e3d2f6 A |
4 | * |
5 | * @APPLE_LICENSE_HEADER_START@ | |
6 | * | |
7 | * This file contains Original Code and/or Modifications of Original Code | |
8 | * as defined in and that are subject to the Apple Public Source License | |
9 | * Version 2.0 (the 'License'). You may not use this file except in | |
10 | * compliance with the License. Please obtain a copy of the License at | |
11 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
12 | * file. | |
13 | * | |
14 | * The Original Code and all software distributed under the License are | |
15 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
16 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
17 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
19 | * Please see the License for the specific language governing rights and | |
20 | * limitations under the License. | |
21 | * | |
22 | * @APPLE_LICENSE_HEADER_END@ | |
23 | */ | |
24 | ||
25 | #include <sys/types.h> | |
26 | #include <sys/stat.h> | |
27 | #include <sys/mman.h> | |
28 | #include <stdarg.h> | |
29 | #include <stdio.h> | |
30 | #include <fcntl.h> | |
31 | #include <unistd.h> | |
32 | #include <errno.h> | |
33 | ||
34 | #include <vector> | |
35 | #include <set> | |
d425e388 | 36 | #include <unordered_set> |
55e3d2f6 | 37 | |
f80fe69f | 38 | #include "configure.h" |
55e3d2f6 A |
39 | #include "MachOFileAbstraction.hpp" |
40 | #include "Architectures.hpp" | |
41 | ||
42 | ||
43 | __attribute__((noreturn)) | |
44 | void throwf(const char* format, ...) | |
45 | { | |
46 | va_list list; | |
47 | char* p; | |
48 | va_start(list, format); | |
49 | vasprintf(&p, format, list); | |
50 | va_end(list); | |
51 | ||
52 | const char* t = p; | |
53 | throw t; | |
54 | } | |
55 | ||
56 | ||
57 | template <typename A> | |
58 | class UnwindPrinter | |
59 | { | |
60 | public: | |
61 | static bool validFile(const uint8_t* fileContent); | |
a645023d A |
62 | static UnwindPrinter<A>* make(const uint8_t* fileContent, uint32_t fileLength, |
63 | const char* path, bool showFunctionNames) | |
64 | { return new UnwindPrinter<A>(fileContent, fileLength, | |
65 | path, showFunctionNames); } | |
55e3d2f6 A |
66 | virtual ~UnwindPrinter() {} |
67 | ||
68 | ||
69 | private: | |
70 | typedef typename A::P P; | |
71 | typedef typename A::P::E E; | |
72 | typedef typename A::P::uint_t pint_t; | |
73 | ||
a645023d A |
74 | UnwindPrinter(const uint8_t* fileContent, uint32_t fileLength, |
75 | const char* path, bool showFunctionNames); | |
55e3d2f6 | 76 | bool findUnwindSection(); |
a645023d | 77 | void printUnwindSection(bool showFunctionNames); |
afe874b1 | 78 | void printObjectUnwindSection(bool showFunctionNames); |
55e3d2f6 | 79 | void getSymbolTableInfo(); |
afe874b1 A |
80 | const char* functionName(pint_t addr, uint32_t* offset=NULL); |
81 | const char* personalityName(const macho_relocation_info<typename A::P>* reloc); | |
82 | bool hasExernReloc(uint64_t sectionOffset, const char** personalityStr, pint_t* addr=NULL); | |
83 | ||
55e3d2f6 | 84 | static const char* archName(); |
fb24a050 | 85 | static void decode(uint32_t encoding, const uint8_t* funcStart, char* str); |
55e3d2f6 A |
86 | |
87 | const char* fPath; | |
88 | const macho_header<P>* fHeader; | |
89 | uint64_t fLength; | |
90 | const macho_section<P>* fUnwindSection; | |
91 | const char* fStrings; | |
92 | const char* fStringsEnd; | |
93 | const macho_nlist<P>* fSymbols; | |
94 | uint32_t fSymbolCount; | |
95 | pint_t fMachHeaderAddress; | |
96 | }; | |
97 | ||
98 | ||
55e3d2f6 A |
99 | template <> const char* UnwindPrinter<x86>::archName() { return "i386"; } |
100 | template <> const char* UnwindPrinter<x86_64>::archName() { return "x86_64"; } | |
101 | template <> const char* UnwindPrinter<arm>::archName() { return "arm"; } | |
f80fe69f A |
102 | #if SUPPORT_ARCH_arm64 |
103 | template <> const char* UnwindPrinter<arm64>::archName() { return "arm64"; } | |
104 | #endif | |
55e3d2f6 A |
105 | |
106 | template <> | |
107 | bool UnwindPrinter<x86>::validFile(const uint8_t* fileContent) | |
108 | { | |
109 | const macho_header<P>* header = (const macho_header<P>*)fileContent; | |
110 | if ( header->magic() != MH_MAGIC ) | |
111 | return false; | |
112 | if ( header->cputype() != CPU_TYPE_I386 ) | |
113 | return false; | |
114 | switch (header->filetype()) { | |
115 | case MH_EXECUTE: | |
116 | case MH_DYLIB: | |
117 | case MH_BUNDLE: | |
118 | case MH_DYLINKER: | |
afe874b1 | 119 | case MH_OBJECT: |
55e3d2f6 A |
120 | return true; |
121 | } | |
122 | return false; | |
123 | } | |
124 | ||
125 | template <> | |
126 | bool UnwindPrinter<x86_64>::validFile(const uint8_t* fileContent) | |
127 | { | |
128 | const macho_header<P>* header = (const macho_header<P>*)fileContent; | |
129 | if ( header->magic() != MH_MAGIC_64 ) | |
130 | return false; | |
131 | if ( header->cputype() != CPU_TYPE_X86_64 ) | |
132 | return false; | |
133 | switch (header->filetype()) { | |
134 | case MH_EXECUTE: | |
135 | case MH_DYLIB: | |
136 | case MH_BUNDLE: | |
137 | case MH_DYLINKER: | |
afe874b1 | 138 | case MH_OBJECT: |
55e3d2f6 A |
139 | return true; |
140 | } | |
141 | return false; | |
142 | } | |
143 | ||
144 | ||
f80fe69f A |
145 | #if SUPPORT_ARCH_arm64 |
146 | template <> | |
147 | bool UnwindPrinter<arm64>::validFile(const uint8_t* fileContent) | |
148 | { | |
149 | const macho_header<P>* header = (const macho_header<P>*)fileContent; | |
150 | if ( header->magic() != MH_MAGIC_64 ) | |
151 | return false; | |
152 | if ( header->cputype() != CPU_TYPE_ARM64 ) | |
153 | return false; | |
154 | switch (header->filetype()) { | |
155 | case MH_EXECUTE: | |
156 | case MH_DYLIB: | |
157 | case MH_BUNDLE: | |
158 | case MH_DYLINKER: | |
159 | case MH_OBJECT: | |
160 | return true; | |
161 | } | |
162 | return false; | |
163 | } | |
164 | #endif | |
165 | ||
ba348e21 A |
166 | template <> |
167 | bool UnwindPrinter<arm>::validFile(const uint8_t* fileContent) | |
168 | { | |
169 | const macho_header<P>* header = (const macho_header<P>*)fileContent; | |
170 | if ( header->magic() != MH_MAGIC ) | |
171 | return false; | |
172 | if ( header->cputype() != CPU_TYPE_ARM ) | |
173 | return false; | |
174 | switch (header->filetype()) { | |
175 | case MH_EXECUTE: | |
176 | case MH_DYLIB: | |
177 | case MH_BUNDLE: | |
178 | case MH_DYLINKER: | |
179 | case MH_OBJECT: | |
180 | return true; | |
181 | } | |
182 | return false; | |
183 | } | |
184 | ||
55e3d2f6 | 185 | template <typename A> |
a645023d | 186 | UnwindPrinter<A>::UnwindPrinter(const uint8_t* fileContent, uint32_t fileLength, const char* path, bool showFunctionNames) |
55e3d2f6 A |
187 | : fHeader(NULL), fLength(fileLength), fUnwindSection(NULL), |
188 | fStrings(NULL), fStringsEnd(NULL), fSymbols(NULL), fSymbolCount(0), fMachHeaderAddress(0) | |
189 | { | |
190 | // sanity check | |
191 | if ( ! validFile(fileContent) ) | |
192 | throw "not a mach-o file that can be checked"; | |
193 | ||
194 | fPath = strdup(path); | |
195 | fHeader = (const macho_header<P>*)fileContent; | |
196 | ||
197 | getSymbolTableInfo(); | |
198 | ||
afe874b1 A |
199 | if ( findUnwindSection() ) { |
200 | if ( fHeader->filetype() == MH_OBJECT ) | |
201 | printObjectUnwindSection(showFunctionNames); | |
202 | else | |
203 | printUnwindSection(showFunctionNames); | |
204 | } | |
55e3d2f6 A |
205 | } |
206 | ||
207 | ||
208 | template <typename A> | |
209 | void UnwindPrinter<A>::getSymbolTableInfo() | |
210 | { | |
211 | const uint8_t* const endOfFile = (uint8_t*)fHeader + fLength; | |
212 | const uint8_t* const endOfLoadCommands = (uint8_t*)fHeader + sizeof(macho_header<P>) + fHeader->sizeofcmds(); | |
213 | const uint32_t cmd_count = fHeader->ncmds(); | |
214 | const macho_load_command<P>* const cmds = (macho_load_command<P>*)((uint8_t*)fHeader + sizeof(macho_header<P>)); | |
215 | const macho_load_command<P>* cmd = cmds; | |
216 | for (uint32_t i = 0; i < cmd_count; ++i) { | |
217 | uint32_t size = cmd->cmdsize(); | |
218 | const uint8_t* endOfCmd = ((uint8_t*)cmd)+cmd->cmdsize(); | |
219 | if ( endOfCmd > endOfLoadCommands ) | |
220 | throwf("load command #%d extends beyond the end of the load commands", i); | |
221 | if ( endOfCmd > endOfFile ) | |
222 | throwf("load command #%d extends beyond the end of the file", i); | |
223 | if ( cmd->cmd() == LC_SYMTAB) { | |
224 | const macho_symtab_command<P>* symtab = (macho_symtab_command<P>*)cmd; | |
225 | fSymbolCount = symtab->nsyms(); | |
226 | fSymbols = (const macho_nlist<P>*)((char*)fHeader + symtab->symoff()); | |
227 | fStrings = (char*)fHeader + symtab->stroff(); | |
228 | fStringsEnd = fStrings + symtab->strsize(); | |
229 | } | |
230 | cmd = (const macho_load_command<P>*)endOfCmd; | |
231 | } | |
232 | } | |
233 | ||
234 | template <typename A> | |
afe874b1 | 235 | const char* UnwindPrinter<A>::functionName(pint_t addr, uint32_t* offset) |
55e3d2f6 | 236 | { |
afe874b1 A |
237 | const macho_nlist<P>* closestSymbol = NULL; |
238 | if ( offset != NULL ) | |
239 | *offset = 0; | |
55e3d2f6 A |
240 | for (uint32_t i=0; i < fSymbolCount; ++i) { |
241 | uint8_t type = fSymbols[i].n_type(); | |
242 | if ( ((type & N_STAB) == 0) && ((type & N_TYPE) == N_SECT) ) { | |
599556ff A |
243 | uint32_t value = fSymbols[i].n_value(); |
244 | if ( value == addr ) { | |
245 | const char* r = &fStrings[fSymbols[i].n_strx()]; | |
246 | return r; | |
247 | } | |
248 | if ( fSymbols[i].n_desc() & N_ARM_THUMB_DEF ) | |
249 | value |= 1; | |
250 | if ( value == addr ) { | |
55e3d2f6 A |
251 | const char* r = &fStrings[fSymbols[i].n_strx()]; |
252 | //fprintf(stderr, "addr=0x%08llX, i=%u, n_type=0x%0X, r=%s\n", (long long)(fSymbols[i].n_value()), i, fSymbols[i].n_type(), r); | |
253 | return r; | |
254 | } | |
afe874b1 A |
255 | else if ( offset != NULL ) { |
256 | if ( closestSymbol == NULL ) { | |
257 | if ( fSymbols[i].n_value() < addr ) | |
258 | closestSymbol = &fSymbols[i]; | |
259 | } | |
260 | else { | |
261 | if ( (fSymbols[i].n_value() < addr) && (fSymbols[i].n_value() > closestSymbol->n_value()) ) | |
262 | closestSymbol = &fSymbols[i]; | |
263 | } | |
264 | } | |
55e3d2f6 A |
265 | } |
266 | } | |
afe874b1 A |
267 | if ( closestSymbol != NULL ) { |
268 | *offset = addr - closestSymbol->n_value(); | |
269 | return &fStrings[closestSymbol->n_strx()]; | |
270 | } | |
fb24a050 | 271 | return "--anonymous function--"; |
55e3d2f6 A |
272 | } |
273 | ||
274 | ||
275 | ||
276 | template <typename A> | |
277 | bool UnwindPrinter<A>::findUnwindSection() | |
278 | { | |
afe874b1 A |
279 | const char* unwindSectionName = "__unwind_info"; |
280 | const char* unwindSegmentName = "__TEXT"; | |
281 | if ( fHeader->filetype() == MH_OBJECT ) { | |
282 | unwindSectionName = "__compact_unwind"; | |
283 | unwindSegmentName = "__LD"; | |
284 | } | |
55e3d2f6 A |
285 | const uint8_t* const endOfFile = (uint8_t*)fHeader + fLength; |
286 | const uint8_t* const endOfLoadCommands = (uint8_t*)fHeader + sizeof(macho_header<P>) + fHeader->sizeofcmds(); | |
287 | const uint32_t cmd_count = fHeader->ncmds(); | |
288 | const macho_load_command<P>* const cmds = (macho_load_command<P>*)((uint8_t*)fHeader + sizeof(macho_header<P>)); | |
289 | const macho_load_command<P>* cmd = cmds; | |
290 | for (uint32_t i = 0; i < cmd_count; ++i) { | |
291 | uint32_t size = cmd->cmdsize(); | |
292 | const uint8_t* endOfCmd = ((uint8_t*)cmd)+cmd->cmdsize(); | |
293 | if ( endOfCmd > endOfLoadCommands ) | |
294 | throwf("load command #%d extends beyond the end of the load commands", i); | |
295 | if ( endOfCmd > endOfFile ) | |
296 | throwf("load command #%d extends beyond the end of the file", i); | |
297 | if ( cmd->cmd() == macho_segment_command<P>::CMD ) { | |
298 | const macho_segment_command<P>* segCmd = (const macho_segment_command<P>*)cmd; | |
299 | const macho_section<P>* const sectionsStart = (macho_section<P>*)((char*)segCmd + sizeof(macho_segment_command<P>)); | |
300 | const macho_section<P>* const sectionsEnd = §ionsStart[segCmd->nsects()]; | |
301 | for(const macho_section<P>* sect = sectionsStart; sect < sectionsEnd; ++sect) { | |
afe874b1 | 302 | if ( (strncmp(sect->sectname(), unwindSectionName, 16) == 0) && (strcmp(sect->segname(), unwindSegmentName) == 0) ) { |
55e3d2f6 A |
303 | fUnwindSection = sect; |
304 | fMachHeaderAddress = segCmd->vmaddr(); | |
305 | return fUnwindSection; | |
306 | } | |
307 | } | |
308 | } | |
309 | cmd = (const macho_load_command<P>*)endOfCmd; | |
310 | } | |
311 | return false; | |
312 | } | |
313 | ||
fb24a050 A |
314 | #define EXTRACT_BITS(value, mask) \ |
315 | ( (value >> __builtin_ctz(mask)) & (((1 << __builtin_popcount(mask)))-1) ) | |
55e3d2f6 A |
316 | |
317 | ||
fb24a050 A |
318 | template <> |
319 | void UnwindPrinter<x86_64>::decode(uint32_t encoding, const uint8_t* funcStart, char* str) | |
320 | { | |
321 | *str = '\0'; | |
322 | switch ( encoding & UNWIND_X86_64_MODE_MASK ) { | |
323 | case UNWIND_X86_64_MODE_RBP_FRAME: | |
324 | { | |
325 | uint32_t savedRegistersOffset = EXTRACT_BITS(encoding, UNWIND_X86_64_RBP_FRAME_OFFSET); | |
326 | uint32_t savedRegistersLocations = EXTRACT_BITS(encoding, UNWIND_X86_64_RBP_FRAME_REGISTERS); | |
327 | if ( savedRegistersLocations == 0 ) { | |
328 | strcpy(str, "rbp frame, no saved registers"); | |
329 | } | |
330 | else { | |
331 | sprintf(str, "rbp frame, at -%d:", savedRegistersOffset*8); | |
332 | bool needComma = false; | |
333 | for (int i=0; i < 5; ++i) { | |
334 | if ( needComma ) | |
335 | strcat(str, ","); | |
336 | else | |
337 | needComma = true; | |
338 | switch (savedRegistersLocations & 0x7) { | |
339 | case UNWIND_X86_64_REG_NONE: | |
340 | strcat(str, "-"); | |
341 | break; | |
342 | case UNWIND_X86_64_REG_RBX: | |
343 | strcat(str, "rbx"); | |
344 | break; | |
345 | case UNWIND_X86_64_REG_R12: | |
346 | strcat(str, "r12"); | |
347 | break; | |
348 | case UNWIND_X86_64_REG_R13: | |
349 | strcat(str, "r13"); | |
350 | break; | |
351 | case UNWIND_X86_64_REG_R14: | |
352 | strcat(str, "r14"); | |
353 | break; | |
354 | case UNWIND_X86_64_REG_R15: | |
355 | strcat(str, "r15"); | |
356 | break; | |
357 | default: | |
358 | strcat(str, "r?"); | |
359 | } | |
360 | savedRegistersLocations = (savedRegistersLocations >> 3); | |
361 | if ( savedRegistersLocations == 0 ) | |
362 | break; | |
363 | } | |
364 | } | |
365 | } | |
366 | break; | |
367 | case UNWIND_X86_64_MODE_STACK_IMMD: | |
368 | case UNWIND_X86_64_MODE_STACK_IND: | |
369 | { | |
370 | uint32_t stackSize = EXTRACT_BITS(encoding, UNWIND_X86_64_FRAMELESS_STACK_SIZE); | |
371 | uint32_t stackAdjust = EXTRACT_BITS(encoding, UNWIND_X86_64_FRAMELESS_STACK_ADJUST); | |
372 | uint32_t regCount = EXTRACT_BITS(encoding, UNWIND_X86_64_FRAMELESS_STACK_REG_COUNT); | |
373 | uint32_t permutation = EXTRACT_BITS(encoding, UNWIND_X86_64_FRAMELESS_STACK_REG_PERMUTATION); | |
374 | if ( (encoding & UNWIND_X86_64_MODE_MASK) == UNWIND_X86_64_MODE_STACK_IND ) { | |
375 | // stack size is encoded in subl $xxx,%esp instruction | |
376 | uint32_t subl = x86_64::P::E::get32(*((uint32_t*)(funcStart+stackSize))); | |
377 | sprintf(str, "stack size=0x%08X, ", subl + 8*stackAdjust); | |
378 | } | |
379 | else { | |
380 | sprintf(str, "stack size=%d, ", stackSize*8); | |
381 | } | |
382 | if ( regCount == 0 ) { | |
383 | strcat(str, "no registers saved"); | |
384 | } | |
385 | else { | |
386 | int permunreg[6]; | |
387 | switch ( regCount ) { | |
388 | case 6: | |
389 | permunreg[0] = permutation/120; | |
390 | permutation -= (permunreg[0]*120); | |
391 | permunreg[1] = permutation/24; | |
392 | permutation -= (permunreg[1]*24); | |
393 | permunreg[2] = permutation/6; | |
394 | permutation -= (permunreg[2]*6); | |
395 | permunreg[3] = permutation/2; | |
396 | permutation -= (permunreg[3]*2); | |
397 | permunreg[4] = permutation; | |
398 | permunreg[5] = 0; | |
399 | break; | |
400 | case 5: | |
401 | permunreg[0] = permutation/120; | |
402 | permutation -= (permunreg[0]*120); | |
403 | permunreg[1] = permutation/24; | |
404 | permutation -= (permunreg[1]*24); | |
405 | permunreg[2] = permutation/6; | |
406 | permutation -= (permunreg[2]*6); | |
407 | permunreg[3] = permutation/2; | |
408 | permutation -= (permunreg[3]*2); | |
409 | permunreg[4] = permutation; | |
410 | break; | |
411 | case 4: | |
412 | permunreg[0] = permutation/60; | |
413 | permutation -= (permunreg[0]*60); | |
414 | permunreg[1] = permutation/12; | |
415 | permutation -= (permunreg[1]*12); | |
416 | permunreg[2] = permutation/3; | |
417 | permutation -= (permunreg[2]*3); | |
418 | permunreg[3] = permutation; | |
419 | break; | |
420 | case 3: | |
421 | permunreg[0] = permutation/20; | |
422 | permutation -= (permunreg[0]*20); | |
423 | permunreg[1] = permutation/4; | |
424 | permutation -= (permunreg[1]*4); | |
425 | permunreg[2] = permutation; | |
426 | break; | |
427 | case 2: | |
428 | permunreg[0] = permutation/5; | |
429 | permutation -= (permunreg[0]*5); | |
430 | permunreg[1] = permutation; | |
431 | break; | |
432 | case 1: | |
433 | permunreg[0] = permutation; | |
434 | break; | |
435 | } | |
436 | // renumber registers back to standard numbers | |
437 | int registers[6]; | |
438 | bool used[7] = { false, false, false, false, false, false, false }; | |
439 | for (int i=0; i < regCount; ++i) { | |
440 | int renum = 0; | |
441 | for (int u=1; u < 7; ++u) { | |
442 | if ( !used[u] ) { | |
443 | if ( renum == permunreg[i] ) { | |
444 | registers[i] = u; | |
445 | used[u] = true; | |
446 | break; | |
447 | } | |
448 | ++renum; | |
449 | } | |
450 | } | |
451 | } | |
452 | bool needComma = false; | |
453 | for (int i=0; i < regCount; ++i) { | |
454 | if ( needComma ) | |
455 | strcat(str, ","); | |
456 | else | |
457 | needComma = true; | |
458 | switch ( registers[i] ) { | |
459 | case UNWIND_X86_64_REG_RBX: | |
460 | strcat(str, "rbx"); | |
461 | break; | |
462 | case UNWIND_X86_64_REG_R12: | |
463 | strcat(str, "r12"); | |
464 | break; | |
465 | case UNWIND_X86_64_REG_R13: | |
466 | strcat(str, "r13"); | |
467 | break; | |
468 | case UNWIND_X86_64_REG_R14: | |
469 | strcat(str, "r14"); | |
470 | break; | |
471 | case UNWIND_X86_64_REG_R15: | |
472 | strcat(str, "r15"); | |
473 | break; | |
474 | case UNWIND_X86_64_REG_RBP: | |
475 | strcat(str, "rbp"); | |
476 | break; | |
477 | default: | |
478 | strcat(str, "r??"); | |
479 | } | |
480 | } | |
481 | } | |
482 | } | |
483 | break; | |
484 | case UNWIND_X86_64_MODE_DWARF: | |
485 | sprintf(str, "dwarf offset 0x%08X, ", encoding & UNWIND_X86_64_DWARF_SECTION_OFFSET); | |
486 | break; | |
487 | default: | |
488 | if ( encoding == 0 ) | |
489 | strcat(str, "no unwind information"); | |
490 | else | |
491 | strcat(str, "tbd "); | |
492 | } | |
493 | if ( encoding & UNWIND_HAS_LSDA ) { | |
494 | strcat(str, " LSDA"); | |
495 | } | |
496 | ||
497 | } | |
498 | ||
499 | template <> | |
500 | void UnwindPrinter<x86>::decode(uint32_t encoding, const uint8_t* funcStart, char* str) | |
501 | { | |
502 | *str = '\0'; | |
503 | switch ( encoding & UNWIND_X86_MODE_MASK ) { | |
504 | case UNWIND_X86_MODE_EBP_FRAME: | |
505 | { | |
506 | uint32_t savedRegistersOffset = EXTRACT_BITS(encoding, UNWIND_X86_EBP_FRAME_OFFSET); | |
507 | uint32_t savedRegistersLocations = EXTRACT_BITS(encoding, UNWIND_X86_EBP_FRAME_REGISTERS); | |
508 | if ( savedRegistersLocations == 0 ) { | |
509 | strcpy(str, "ebp frame, no saved registers"); | |
510 | } | |
511 | else { | |
512 | sprintf(str, "ebp frame, at -%d:", savedRegistersOffset*4); | |
513 | bool needComma = false; | |
514 | for (int i=0; i < 5; ++i) { | |
515 | if ( needComma ) | |
516 | strcat(str, ","); | |
517 | else | |
518 | needComma = true; | |
519 | switch (savedRegistersLocations & 0x7) { | |
520 | case UNWIND_X86_REG_NONE: | |
521 | strcat(str, "-"); | |
522 | break; | |
523 | case UNWIND_X86_REG_EBX: | |
524 | strcat(str, "ebx"); | |
525 | break; | |
526 | case UNWIND_X86_REG_ECX: | |
527 | strcat(str, "ecx"); | |
528 | break; | |
529 | case UNWIND_X86_REG_EDX: | |
530 | strcat(str, "edx"); | |
531 | break; | |
532 | case UNWIND_X86_REG_EDI: | |
533 | strcat(str, "edi"); | |
534 | break; | |
535 | case UNWIND_X86_REG_ESI: | |
536 | strcat(str, "esi"); | |
537 | break; | |
538 | default: | |
539 | strcat(str, "e??"); | |
540 | } | |
541 | savedRegistersLocations = (savedRegistersLocations >> 3); | |
542 | if ( savedRegistersLocations == 0 ) | |
543 | break; | |
544 | } | |
545 | } | |
546 | } | |
547 | break; | |
548 | case UNWIND_X86_MODE_STACK_IMMD: | |
549 | case UNWIND_X86_MODE_STACK_IND: | |
550 | { | |
551 | uint32_t stackSize = EXTRACT_BITS(encoding, UNWIND_X86_FRAMELESS_STACK_SIZE); | |
552 | uint32_t stackAdjust = EXTRACT_BITS(encoding, UNWIND_X86_FRAMELESS_STACK_ADJUST); | |
553 | uint32_t regCount = EXTRACT_BITS(encoding, UNWIND_X86_FRAMELESS_STACK_REG_COUNT); | |
554 | uint32_t permutation = EXTRACT_BITS(encoding, UNWIND_X86_FRAMELESS_STACK_REG_PERMUTATION); | |
555 | if ( (encoding & UNWIND_X86_MODE_MASK) == UNWIND_X86_MODE_STACK_IND ) { | |
556 | // stack size is encoded in subl $xxx,%esp instruction | |
557 | uint32_t subl = x86::P::E::get32(*((uint32_t*)(funcStart+stackSize))); | |
558 | sprintf(str, "stack size=0x%08X, ", subl+4*stackAdjust); | |
559 | } | |
560 | else { | |
561 | sprintf(str, "stack size=%d, ", stackSize*4); | |
562 | } | |
563 | if ( regCount == 0 ) { | |
564 | strcat(str, "no saved regs"); | |
565 | } | |
566 | else { | |
567 | int permunreg[6]; | |
568 | switch ( regCount ) { | |
569 | case 6: | |
570 | permunreg[0] = permutation/120; | |
571 | permutation -= (permunreg[0]*120); | |
572 | permunreg[1] = permutation/24; | |
573 | permutation -= (permunreg[1]*24); | |
574 | permunreg[2] = permutation/6; | |
575 | permutation -= (permunreg[2]*6); | |
576 | permunreg[3] = permutation/2; | |
577 | permutation -= (permunreg[3]*2); | |
578 | permunreg[4] = permutation; | |
579 | permunreg[5] = 0; | |
580 | break; | |
581 | case 5: | |
582 | permunreg[0] = permutation/120; | |
583 | permutation -= (permunreg[0]*120); | |
584 | permunreg[1] = permutation/24; | |
585 | permutation -= (permunreg[1]*24); | |
586 | permunreg[2] = permutation/6; | |
587 | permutation -= (permunreg[2]*6); | |
588 | permunreg[3] = permutation/2; | |
589 | permutation -= (permunreg[3]*2); | |
590 | permunreg[4] = permutation; | |
591 | break; | |
592 | case 4: | |
593 | permunreg[0] = permutation/60; | |
594 | permutation -= (permunreg[0]*60); | |
595 | permunreg[1] = permutation/12; | |
596 | permutation -= (permunreg[1]*12); | |
597 | permunreg[2] = permutation/3; | |
598 | permutation -= (permunreg[2]*3); | |
599 | permunreg[3] = permutation; | |
600 | break; | |
601 | case 3: | |
602 | permunreg[0] = permutation/20; | |
603 | permutation -= (permunreg[0]*20); | |
604 | permunreg[1] = permutation/4; | |
605 | permutation -= (permunreg[1]*4); | |
606 | permunreg[2] = permutation; | |
607 | break; | |
608 | case 2: | |
609 | permunreg[0] = permutation/5; | |
610 | permutation -= (permunreg[0]*5); | |
611 | permunreg[1] = permutation; | |
612 | break; | |
613 | case 1: | |
614 | permunreg[0] = permutation; | |
615 | break; | |
616 | } | |
617 | // renumber registers back to standard numbers | |
618 | int registers[6]; | |
619 | bool used[7] = { false, false, false, false, false, false, false }; | |
620 | for (int i=0; i < regCount; ++i) { | |
621 | int renum = 0; | |
622 | for (int u=1; u < 7; ++u) { | |
623 | if ( !used[u] ) { | |
624 | if ( renum == permunreg[i] ) { | |
625 | registers[i] = u; | |
626 | used[u] = true; | |
627 | break; | |
628 | } | |
629 | ++renum; | |
630 | } | |
631 | } | |
632 | } | |
633 | bool needComma = false; | |
634 | for (int i=0; i < regCount; ++i) { | |
635 | if ( needComma ) | |
636 | strcat(str, ","); | |
637 | else | |
638 | needComma = true; | |
639 | switch ( registers[i] ) { | |
640 | case UNWIND_X86_REG_EBX: | |
641 | strcat(str, "ebx"); | |
642 | break; | |
643 | case UNWIND_X86_REG_ECX: | |
644 | strcat(str, "ecx"); | |
645 | break; | |
646 | case UNWIND_X86_REG_EDX: | |
647 | strcat(str, "edx"); | |
648 | break; | |
649 | case UNWIND_X86_REG_EDI: | |
650 | strcat(str, "edi"); | |
651 | break; | |
652 | case UNWIND_X86_REG_ESI: | |
653 | strcat(str, "esi"); | |
654 | break; | |
655 | case UNWIND_X86_REG_EBP: | |
656 | strcat(str, "ebp"); | |
657 | break; | |
658 | default: | |
659 | strcat(str, "e??"); | |
660 | } | |
661 | } | |
662 | } | |
663 | } | |
664 | break; | |
665 | case UNWIND_X86_MODE_DWARF: | |
666 | sprintf(str, "dwarf offset 0x%08X, ", encoding & UNWIND_X86_DWARF_SECTION_OFFSET); | |
667 | break; | |
668 | default: | |
669 | if ( encoding == 0 ) | |
670 | strcat(str, "no unwind information"); | |
671 | else | |
672 | strcat(str, "tbd "); | |
673 | } | |
674 | if ( encoding & UNWIND_HAS_LSDA ) { | |
675 | strcat(str, " LSDA"); | |
676 | } | |
677 | ||
678 | } | |
679 | ||
f80fe69f A |
680 | #if SUPPORT_ARCH_arm64 |
681 | template <> | |
682 | void UnwindPrinter<arm64>::decode(uint32_t encoding, const uint8_t* funcStart, char* str) | |
683 | { | |
684 | uint32_t stackSize; | |
685 | switch ( encoding & UNWIND_ARM64_MODE_MASK ) { | |
686 | case UNWIND_ARM64_MODE_FRAMELESS: | |
687 | stackSize = EXTRACT_BITS(encoding, UNWIND_ARM64_FRAMELESS_STACK_SIZE_MASK); | |
688 | if ( stackSize == 0 ) | |
689 | strcpy(str, "no frame, no saved registers "); | |
690 | else | |
691 | sprintf(str, "stack size=%d: ", 16 * stackSize); | |
692 | if ( encoding & UNWIND_ARM64_FRAME_X19_X20_PAIR ) | |
693 | strcat(str, "x19/20 "); | |
694 | if ( encoding & UNWIND_ARM64_FRAME_X21_X22_PAIR ) | |
695 | strcat(str, "x21/22 "); | |
696 | if ( encoding & UNWIND_ARM64_FRAME_X23_X24_PAIR ) | |
697 | strcat(str, "x23/24 "); | |
698 | if ( encoding & UNWIND_ARM64_FRAME_X25_X26_PAIR ) | |
699 | strcat(str, "x25/26 "); | |
700 | if ( encoding & UNWIND_ARM64_FRAME_X27_X28_PAIR ) | |
701 | strcat(str, "x27/28 "); | |
702 | if ( encoding & UNWIND_ARM64_FRAME_D8_D9_PAIR ) | |
703 | strcat(str, "d8/9 "); | |
704 | if ( encoding & UNWIND_ARM64_FRAME_D10_D11_PAIR ) | |
705 | strcat(str, "d10/11 "); | |
706 | if ( encoding & UNWIND_ARM64_FRAME_D12_D13_PAIR ) | |
707 | strcat(str, "d12/13 "); | |
708 | if ( encoding & UNWIND_ARM64_FRAME_D14_D15_PAIR ) | |
709 | strcat(str, "d14/15 "); | |
710 | break; | |
711 | break; | |
712 | case UNWIND_ARM64_MODE_DWARF: | |
713 | sprintf(str, "dwarf offset 0x%08X, ", encoding & UNWIND_X86_64_DWARF_SECTION_OFFSET); | |
714 | break; | |
715 | case UNWIND_ARM64_MODE_FRAME: | |
716 | strcpy(str, "std frame: "); | |
717 | if ( encoding & UNWIND_ARM64_FRAME_X19_X20_PAIR ) | |
718 | strcat(str, "x19/20 "); | |
719 | if ( encoding & UNWIND_ARM64_FRAME_X21_X22_PAIR ) | |
720 | strcat(str, "x21/22 "); | |
721 | if ( encoding & UNWIND_ARM64_FRAME_X23_X24_PAIR ) | |
722 | strcat(str, "x23/24 "); | |
723 | if ( encoding & UNWIND_ARM64_FRAME_X25_X26_PAIR ) | |
724 | strcat(str, "x25/26 "); | |
725 | if ( encoding & UNWIND_ARM64_FRAME_X27_X28_PAIR ) | |
726 | strcat(str, "x27/28 "); | |
727 | if ( encoding & UNWIND_ARM64_FRAME_D8_D9_PAIR ) | |
728 | strcat(str, "d8/9 "); | |
729 | if ( encoding & UNWIND_ARM64_FRAME_D10_D11_PAIR ) | |
730 | strcat(str, "d10/11 "); | |
731 | if ( encoding & UNWIND_ARM64_FRAME_D12_D13_PAIR ) | |
732 | strcat(str, "d12/13 "); | |
733 | if ( encoding & UNWIND_ARM64_FRAME_D14_D15_PAIR ) | |
734 | strcat(str, "d14/15 "); | |
735 | break; | |
736 | case UNWIND_ARM64_MODE_FRAME_OLD: | |
737 | strcpy(str, "old frame: "); | |
738 | if ( encoding & UNWIND_ARM64_FRAME_X21_X22_PAIR_OLD ) | |
739 | strcat(str, "x21/22 "); | |
740 | if ( encoding & UNWIND_ARM64_FRAME_X23_X24_PAIR_OLD ) | |
741 | strcat(str, "x23/24 "); | |
742 | if ( encoding & UNWIND_ARM64_FRAME_X25_X26_PAIR_OLD ) | |
743 | strcat(str, "x25/26 "); | |
744 | if ( encoding & UNWIND_ARM64_FRAME_X27_X28_PAIR_OLD ) | |
745 | strcat(str, "x27/28 "); | |
746 | if ( encoding & UNWIND_ARM64_FRAME_D8_D9_PAIR_OLD ) | |
747 | strcat(str, "d8/9 "); | |
748 | if ( encoding & UNWIND_ARM64_FRAME_D10_D11_PAIR_OLD ) | |
749 | strcat(str, "d10/11 "); | |
750 | if ( encoding & UNWIND_ARM64_FRAME_D12_D13_PAIR_OLD ) | |
751 | strcat(str, "d12/13 "); | |
752 | if ( encoding & UNWIND_ARM64_FRAME_D14_D15_PAIR_OLD ) | |
753 | strcat(str, "d14/15 "); | |
754 | break; | |
755 | } | |
756 | } | |
757 | #endif | |
afe874b1 | 758 | |
ba348e21 A |
759 | template <> |
760 | void UnwindPrinter<arm>::decode(uint32_t encoding, const uint8_t* funcStart, char* str) | |
761 | { | |
762 | *str = '\0'; | |
763 | switch ( encoding & UNWIND_ARM_MODE_MASK ) { | |
764 | case UNWIND_ARM_MODE_DWARF: | |
765 | sprintf(str, "dwarf offset 0x%08X, ", encoding & UNWIND_ARM_DWARF_SECTION_OFFSET); | |
766 | break; | |
767 | case UNWIND_ARM_MODE_FRAME: | |
768 | case UNWIND_ARM_MODE_FRAME_D: | |
769 | switch ( encoding & UNWIND_ARM_FRAME_STACK_ADJUST_MASK ) { | |
770 | case 0x00000000: | |
771 | strcpy(str, "std frame: "); | |
772 | break; | |
773 | case 0x00400000: | |
774 | strcat(str, "std frame(sp adj 4): "); | |
775 | break; | |
776 | case 0x00800000: | |
777 | strcat(str, "std frame(sp adj 8): "); | |
778 | break; | |
779 | case 0x00C00000: | |
780 | strcat(str, "std frame(sp adj 12): "); | |
781 | break; | |
782 | } | |
783 | if ( encoding & UNWIND_ARM_FRAME_FIRST_PUSH_R4 ) | |
784 | strcat(str, "r4 "); | |
785 | if ( encoding & UNWIND_ARM_FRAME_FIRST_PUSH_R5 ) | |
786 | strcat(str, "r5 "); | |
787 | if ( encoding & UNWIND_ARM_FRAME_FIRST_PUSH_R6 ) | |
788 | strcat(str, "r6 "); | |
789 | ||
790 | if ( encoding & 0x000000F8) | |
791 | strcat(str, " / "); | |
792 | if ( encoding & UNWIND_ARM_FRAME_SECOND_PUSH_R8 ) | |
793 | strcat(str, "r8 "); | |
794 | if ( encoding & UNWIND_ARM_FRAME_SECOND_PUSH_R9 ) | |
795 | strcat(str, "r9 "); | |
796 | if ( encoding & UNWIND_ARM_FRAME_SECOND_PUSH_R10 ) | |
797 | strcat(str, "r10 "); | |
798 | if ( encoding & UNWIND_ARM_FRAME_SECOND_PUSH_R11 ) | |
799 | strcat(str, "r11 "); | |
800 | if ( encoding & UNWIND_ARM_FRAME_SECOND_PUSH_R12 ) | |
801 | strcat(str, "r12 "); | |
802 | ||
803 | if ( (encoding & UNWIND_ARM_MODE_MASK) == UNWIND_ARM_MODE_FRAME_D ) { | |
804 | switch ( encoding & UNWIND_ARM_FRAME_D_REG_COUNT_MASK ) { | |
805 | case 0x00000000: | |
806 | strcat(str, " / d8 "); | |
807 | break; | |
808 | case 0x00000100: | |
809 | strcat(str, " / d8,d10 "); | |
810 | break; | |
811 | case 0x00000200: | |
812 | strcat(str, " / d8,d10,d12 "); | |
813 | break; | |
814 | case 0x00000300: | |
815 | strcat(str, " / d8,d10,d12,d14 "); | |
816 | break; | |
817 | case 0x00000400: | |
818 | strcat(str, " / d12,d14 / d8,d9,d10 "); | |
819 | break; | |
820 | case 0x00000500: | |
821 | strcat(str, " / d14 / d8,d9,d10,d11,d12"); | |
822 | break; | |
823 | case 0x00000600: | |
824 | strcat(str, " / d8,d9,d10,d11,d12,d13,d14 "); | |
825 | break; | |
826 | case 0x00000700: | |
827 | strcat(str, " / d8,d9,d10,d11,d12,d13,d14 "); | |
828 | break; | |
829 | default: | |
830 | strcat(str, " / unknown D register usage "); | |
831 | break; | |
832 | } | |
833 | } | |
834 | ||
835 | break; | |
836 | default: | |
837 | if ( encoding == 0 ) | |
838 | strcpy(str, "no unwind information"); | |
839 | else | |
840 | strcpy(str, "unsupported compact unwind"); | |
841 | break; | |
842 | } | |
843 | } | |
599556ff A |
844 | |
845 | ||
afe874b1 A |
846 | template <> |
847 | const char* UnwindPrinter<x86_64>::personalityName(const macho_relocation_info<x86_64::P>* reloc) | |
848 | { | |
849 | //assert(reloc->r_extern() && "reloc not extern on personality column in __compact_unwind section"); | |
850 | //assert((reloc->r_type() == X86_64_RELOC_UNSIGNED) && "wrong reloc type on personality column in __compact_unwind section"); | |
851 | const macho_nlist<P>& sym = fSymbols[reloc->r_symbolnum()]; | |
852 | return &fStrings[sym.n_strx()]; | |
853 | } | |
854 | ||
855 | template <> | |
856 | const char* UnwindPrinter<x86>::personalityName(const macho_relocation_info<x86::P>* reloc) | |
857 | { | |
858 | //assert(reloc->r_extern() && "reloc not extern on personality column in __compact_unwind section"); | |
859 | //assert((reloc->r_type() == GENERIC_RELOC_VANILLA) && "wrong reloc type on personality column in __compact_unwind section"); | |
860 | const macho_nlist<P>& sym = fSymbols[reloc->r_symbolnum()]; | |
861 | return &fStrings[sym.n_strx()]; | |
862 | } | |
863 | ||
f80fe69f A |
864 | #if SUPPORT_ARCH_arm64 |
865 | template <> | |
866 | const char* UnwindPrinter<arm64>::personalityName(const macho_relocation_info<arm64::P>* reloc) | |
867 | { | |
868 | //assert(reloc->r_extern() && "reloc not extern on personality column in __compact_unwind section"); | |
869 | //assert((reloc->r_type() == ARM64_RELOC_UNSIGNED) && "wrong reloc type on personality column in __compact_unwind section"); | |
870 | const macho_nlist<P>& sym = fSymbols[reloc->r_symbolnum()]; | |
871 | return &fStrings[sym.n_strx()]; | |
872 | } | |
873 | #endif | |
874 | ||
ba348e21 A |
875 | template <> |
876 | const char* UnwindPrinter<arm>::personalityName(const macho_relocation_info<arm::P>* reloc) | |
877 | { | |
878 | //assert(reloc->r_extern() && "reloc not extern on personality column in __compact_unwind section"); | |
879 | //assert((reloc->r_type() == GENERIC_RELOC_VANILLA) && "wrong reloc type on personality column in __compact_unwind section"); | |
880 | const macho_nlist<P>& sym = fSymbols[reloc->r_symbolnum()]; | |
881 | return &fStrings[sym.n_strx()]; | |
882 | } | |
599556ff | 883 | |
fb24a050 | 884 | template <typename A> |
afe874b1 | 885 | bool UnwindPrinter<A>::hasExernReloc(uint64_t sectionOffset, const char** personalityStr, pint_t* addr) |
fb24a050 | 886 | { |
afe874b1 A |
887 | const macho_relocation_info<P>* relocs = (macho_relocation_info<P>*)((uint8_t*)fHeader + fUnwindSection->reloff()); |
888 | const macho_relocation_info<P>* relocsEnd = &relocs[fUnwindSection->nreloc()]; | |
889 | for (const macho_relocation_info<P>* reloc = relocs; reloc < relocsEnd; ++reloc) { | |
890 | if ( reloc->r_extern() && (reloc->r_address() == sectionOffset) ) { | |
891 | *personalityStr = this->personalityName(reloc); | |
892 | if ( addr != NULL ) | |
893 | *addr = fSymbols[reloc->r_symbolnum()].n_value(); | |
894 | return true; | |
895 | } | |
896 | } | |
897 | return false; | |
898 | } | |
899 | ||
fb24a050 | 900 | |
afe874b1 A |
901 | template <typename A> |
902 | void UnwindPrinter<A>::printObjectUnwindSection(bool showFunctionNames) | |
903 | { | |
904 | printf("Arch: %s, Section: __LD,__compact_unwind (size=0x%08llX, => %lld entries)\n", | |
905 | archName(), fUnwindSection->size(), fUnwindSection->size() / sizeof(macho_compact_unwind_entry<P>)); | |
906 | ||
907 | const macho_compact_unwind_entry<P>* const entriesStart = (macho_compact_unwind_entry<P>*)((uint8_t*)fHeader + fUnwindSection->offset()); | |
908 | const macho_compact_unwind_entry<P>* const entriesEnd = (macho_compact_unwind_entry<P>*)((uint8_t*)fHeader + fUnwindSection->offset() + fUnwindSection->size()); | |
909 | for (const macho_compact_unwind_entry<P>* entry=entriesStart; entry < entriesEnd; ++entry) { | |
910 | uint64_t entryAddress = ((char*)entry - (char*)entriesStart) + fUnwindSection->addr(); | |
911 | printf("0x%08llX:\n", entryAddress); | |
912 | const char* functionNameStr; | |
913 | pint_t funcAddress; | |
914 | uint32_t offsetInFunction; | |
915 | if ( hasExernReloc(((char*)entry-(char*)entriesStart)+macho_compact_unwind_entry<P>::codeStartFieldOffset(), &functionNameStr, &funcAddress) ) { | |
916 | offsetInFunction = entry->codeStart(); | |
917 | } | |
918 | else { | |
919 | functionNameStr = this->functionName(entry->codeStart(), &offsetInFunction); | |
599556ff | 920 | funcAddress = entry->codeStart(); |
afe874b1 A |
921 | } |
922 | if ( offsetInFunction == 0 ) | |
923 | printf(" start: 0x%08llX %s\n", (uint64_t)funcAddress, functionNameStr); | |
924 | else | |
925 | printf(" start: 0x%08llX %s+0x%X\n", (uint64_t)funcAddress+offsetInFunction, functionNameStr, offsetInFunction); | |
926 | ||
927 | printf(" end: 0x%08llX (len=0x%08X)\n", (uint64_t)(funcAddress+offsetInFunction+entry->codeLen()), entry->codeLen()); | |
928 | ||
929 | char encodingString[200]; | |
930 | this->decode(entry->compactUnwindInfo(), ((const uint8_t*)fHeader), encodingString); | |
931 | printf(" unwind info: 0x%08X %s\n", entry->compactUnwindInfo(), encodingString); | |
932 | ||
933 | const char* personalityNameStr; | |
934 | if ( hasExernReloc(((char*)entry-(char*)entriesStart)+macho_compact_unwind_entry<P>::personalityFieldOffset(), &personalityNameStr) ) { | |
935 | printf(" personality: %s\n", personalityNameStr); | |
936 | } | |
937 | else { | |
938 | printf(" personality:\n"); | |
939 | } | |
940 | if ( entry->lsda() == 0 ) { | |
941 | printf(" lsda:\n"); | |
942 | } | |
943 | else { | |
944 | uint32_t lsdaOffset; | |
945 | const char* lsdaName = this->functionName(entry->lsda(), &lsdaOffset); | |
946 | if ( lsdaOffset == 0 ) | |
947 | printf(" lsda: 0x%08llX %s\n", (uint64_t)entry->lsda(), lsdaName); | |
948 | else | |
949 | printf(" lsda: 0x%08llX %s+0x%X\n", (uint64_t)entry->lsda(), lsdaName, lsdaOffset); | |
950 | } | |
951 | } | |
fb24a050 | 952 | } |
55e3d2f6 | 953 | |
afe874b1 A |
954 | |
955 | ||
55e3d2f6 | 956 | template <typename A> |
a645023d | 957 | void UnwindPrinter<A>::printUnwindSection(bool showFunctionNames) |
55e3d2f6 A |
958 | { |
959 | const uint8_t* sectionContent = (uint8_t*)fHeader + fUnwindSection->offset(); | |
960 | macho_unwind_info_section_header<P>* sectionHeader = (macho_unwind_info_section_header<P>*)(sectionContent); | |
961 | ||
962 | printf("Arch: %s, Section: __TEXT,__unwind_info (addr=0x%08llX, size=0x%08llX, fileOffset=0x%08X)\n", | |
963 | archName(), fUnwindSection->addr(), fUnwindSection->size(), fUnwindSection->offset()); | |
964 | printf("\tversion=0x%08X\n", sectionHeader->version()); | |
965 | printf("\tcommonEncodingsArraySectionOffset=0x%08X\n", sectionHeader->commonEncodingsArraySectionOffset()); | |
966 | printf("\tcommonEncodingsArrayCount=0x%08X\n", sectionHeader->commonEncodingsArrayCount()); | |
967 | printf("\tpersonalityArraySectionOffset=0x%08X\n", sectionHeader->personalityArraySectionOffset()); | |
968 | printf("\tpersonalityArrayCount=0x%08X\n", sectionHeader->personalityArrayCount()); | |
969 | printf("\tindexSectionOffset=0x%08X\n", sectionHeader->indexSectionOffset()); | |
970 | printf("\tindexCount=0x%08X\n", sectionHeader->indexCount()); | |
971 | printf("\tcommon encodings: (count=%u)\n", sectionHeader->commonEncodingsArrayCount()); | |
972 | const uint32_t* commonEncodings = (uint32_t*)§ionContent[sectionHeader->commonEncodingsArraySectionOffset()]; | |
973 | for (uint32_t i=0; i < sectionHeader->commonEncodingsArrayCount(); ++i) { | |
fb24a050 | 974 | printf("\t\tencoding[%3u]=0x%08X\n", i, A::P::E::get32(commonEncodings[i])); |
55e3d2f6 A |
975 | } |
976 | printf("\tpersonalities: (count=%u)\n", sectionHeader->personalityArrayCount()); | |
977 | const uint32_t* personalityArray = (uint32_t*)§ionContent[sectionHeader->personalityArraySectionOffset()]; | |
978 | for (uint32_t i=0; i < sectionHeader->personalityArrayCount(); ++i) { | |
979 | printf("\t\t[%2u]=0x%08X\n", i+1, A::P::E::get32(personalityArray[i])); | |
980 | } | |
981 | printf("\tfirst level index: (count=%u)\n", sectionHeader->indexCount()); | |
982 | macho_unwind_info_section_header_index_entry<P>* indexes = (macho_unwind_info_section_header_index_entry<P>*)§ionContent[sectionHeader->indexSectionOffset()]; | |
983 | for (uint32_t i=0; i < sectionHeader->indexCount(); ++i) { | |
984 | printf("\t\t[%2u] funcOffset=0x%08X, pageOffset=0x%08X, lsdaOffset=0x%08X\n", | |
985 | i, indexes[i].functionOffset(), indexes[i].secondLevelPagesSectionOffset(), indexes[i].lsdaIndexArraySectionOffset()); | |
986 | } | |
987 | uint32_t lsdaIndexArraySectionOffset = indexes[0].lsdaIndexArraySectionOffset(); | |
988 | uint32_t lsdaIndexArrayEndSectionOffset = indexes[sectionHeader->indexCount()-1].lsdaIndexArraySectionOffset(); | |
989 | uint32_t lsdaIndexArrayCount = (lsdaIndexArrayEndSectionOffset-lsdaIndexArraySectionOffset)/sizeof(macho_unwind_info_section_header_lsda_index_entry<P>); | |
990 | printf("\tLSDA table: (section offset 0x%08X, count=%u)\n", lsdaIndexArraySectionOffset, lsdaIndexArrayCount); | |
991 | macho_unwind_info_section_header_lsda_index_entry<P>* lindex = (macho_unwind_info_section_header_lsda_index_entry<P>*)§ionContent[lsdaIndexArraySectionOffset]; | |
992 | for (uint32_t i=0; i < lsdaIndexArrayCount; ++i) { | |
a645023d A |
993 | const char* name = showFunctionNames ? functionName(lindex[i].functionOffset()+fMachHeaderAddress) : ""; |
994 | printf("\t\t[%3u] funcOffset=0x%08X, lsdaOffset=0x%08X, %s\n", i, lindex[i].functionOffset(), lindex[i].lsdaOffset(), name); | |
55e3d2f6 A |
995 | if ( *(((uint8_t*)fHeader) + lindex[i].lsdaOffset()) != 0xFF ) |
996 | fprintf(stderr, "BAD LSDA entry (does not start with 0xFF) for %s\n", functionName(lindex[i].functionOffset()+fMachHeaderAddress)); | |
997 | } | |
998 | for (uint32_t i=0; i < sectionHeader->indexCount()-1; ++i) { | |
999 | printf("\tsecond level index[%u] sectionOffset=0x%08X, count=%u, fileOffset=0x%08X\n", i, indexes[i].secondLevelPagesSectionOffset(), | |
1000 | sectionHeader->indexCount(), fUnwindSection->offset()+indexes[i].secondLevelPagesSectionOffset()); | |
1001 | macho_unwind_info_regular_second_level_page_header<P>* page = (macho_unwind_info_regular_second_level_page_header<P>*)§ionContent[indexes[i].secondLevelPagesSectionOffset()]; | |
1002 | if ( page->kind() == UNWIND_SECOND_LEVEL_REGULAR ) { | |
1003 | printf("\t\tkind=UNWIND_SECOND_LEVEL_REGULAR\n"); | |
1004 | printf("\t\tentryPageOffset=0x%08X\n", page->entryPageOffset()); | |
1005 | printf("\t\tentryCount=0x%08X\n", page->entryCount()); | |
1006 | const macho_unwind_info_regular_second_level_entry<P>* entry = (macho_unwind_info_regular_second_level_entry<P>*)((char*)page+page->entryPageOffset()); | |
1007 | for (uint32_t j=0; j < page->entryCount(); ++j) { | |
fb24a050 | 1008 | uint32_t funcOffset = entry[j].functionOffset(); |
55e3d2f6 A |
1009 | if ( entry[j].encoding() & UNWIND_HAS_LSDA ) { |
1010 | // verify there is a corresponding entry in lsda table | |
1011 | bool found = false; | |
1012 | for (uint32_t k=0; k < lsdaIndexArrayCount; ++k) { | |
1013 | if ( lindex[k].functionOffset() == funcOffset ) { | |
1014 | found = true; | |
1015 | break; | |
1016 | } | |
1017 | } | |
1018 | if ( !found ) { | |
1019 | fprintf(stderr, "MISSING LSDA entry for %s\n", functionName(funcOffset+fMachHeaderAddress)); | |
1020 | } | |
1021 | } | |
fb24a050 A |
1022 | char encodingString[100]; |
1023 | decode(entry[j].encoding(), ((const uint8_t*)fHeader)+funcOffset, encodingString); | |
a645023d | 1024 | const char* name = showFunctionNames ? functionName(funcOffset+fMachHeaderAddress) : ""; |
f80fe69f | 1025 | printf("\t\t\t[%3u] funcOffset=0x%08X, encoding=0x%08X (%-56s) %s\n", |
a645023d | 1026 | j, funcOffset, entry[j].encoding(), encodingString, name); |
55e3d2f6 A |
1027 | } |
1028 | } | |
1029 | else if ( page->kind() == UNWIND_SECOND_LEVEL_COMPRESSED ) { | |
1030 | macho_unwind_info_compressed_second_level_page_header<P>* cp = (macho_unwind_info_compressed_second_level_page_header<P>*)page; | |
1031 | printf("\t\tkind=UNWIND_SECOND_LEVEL_COMPRESSED\n"); | |
1032 | printf("\t\tentryPageOffset=0x%08X\n", cp->entryPageOffset()); | |
1033 | printf("\t\tentryCount=0x%08X\n", cp->entryCount()); | |
1034 | printf("\t\tencodingsPageOffset=0x%08X\n", cp->encodingsPageOffset()); | |
1035 | printf("\t\tencodingsCount=0x%08X\n", cp->encodingsCount()); | |
1036 | const uint32_t* entries = (uint32_t*)(((uint8_t*)page)+cp->entryPageOffset()); | |
1037 | const uint32_t* encodings = (uint32_t*)(((uint8_t*)page)+cp->encodingsPageOffset()); | |
1038 | const uint32_t baseFunctionOffset = indexes[i].functionOffset(); | |
1039 | for (uint32_t j=0; j < cp->entryCount(); ++j) { | |
1040 | uint8_t encodingIndex = UNWIND_INFO_COMPRESSED_ENTRY_ENCODING_INDEX(entries[j]); | |
1041 | uint32_t encoding; | |
1042 | if ( encodingIndex < sectionHeader->commonEncodingsArrayCount() ) | |
1043 | encoding = A::P::E::get32(commonEncodings[encodingIndex]); | |
1044 | else | |
1045 | encoding = A::P::E::get32(encodings[encodingIndex-sectionHeader->commonEncodingsArrayCount()]); | |
fb24a050 | 1046 | char encodingString[100]; |
55e3d2f6 | 1047 | uint32_t funcOff = UNWIND_INFO_COMPRESSED_ENTRY_FUNC_OFFSET(entries[j])+baseFunctionOffset; |
fb24a050 | 1048 | decode(encoding, ((const uint8_t*)fHeader)+funcOff, encodingString); |
a645023d | 1049 | const char* name = showFunctionNames ? functionName(funcOff+fMachHeaderAddress) : ""; |
55e3d2f6 A |
1050 | if ( encoding & UNWIND_HAS_LSDA ) { |
1051 | // verify there is a corresponding entry in lsda table | |
1052 | bool found = false; | |
1053 | for (uint32_t k=0; k < lsdaIndexArrayCount; ++k) { | |
1054 | if ( lindex[k].functionOffset() == funcOff ) { | |
1055 | found = true; | |
1056 | break; | |
1057 | } | |
1058 | } | |
1059 | if ( !found ) { | |
1060 | fprintf(stderr, "MISSING LSDA entry for %s\n", name); | |
1061 | } | |
1062 | } | |
f80fe69f | 1063 | printf("\t\t\t[%3u] funcOffset=0x%08X, encoding[%3u]=0x%08X (%-56s) %s\n", |
fb24a050 | 1064 | j, funcOff, encodingIndex, encoding, encodingString, name); |
55e3d2f6 A |
1065 | } |
1066 | } | |
1067 | else { | |
1068 | fprintf(stderr, "\t\tbad page header\n"); | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | } | |
1073 | ||
a645023d | 1074 | static void dump(const char* path, const std::set<cpu_type_t>& onlyArchs, bool showFunctionNames) |
55e3d2f6 A |
1075 | { |
1076 | struct stat stat_buf; | |
1077 | ||
1078 | try { | |
1079 | int fd = ::open(path, O_RDONLY, 0); | |
1080 | if ( fd == -1 ) | |
1081 | throw "cannot open file"; | |
1082 | if ( ::fstat(fd, &stat_buf) != 0 ) | |
1083 | throwf("fstat(%s) failed, errno=%d\n", path, errno); | |
1084 | uint32_t length = stat_buf.st_size; | |
1085 | uint8_t* p = (uint8_t*)::mmap(NULL, stat_buf.st_size, PROT_READ, MAP_FILE | MAP_PRIVATE, fd, 0); | |
1086 | if ( p == ((uint8_t*)(-1)) ) | |
1087 | throw "cannot map file"; | |
1088 | ::close(fd); | |
1089 | const mach_header* mh = (mach_header*)p; | |
1090 | if ( mh->magic == OSSwapBigToHostInt32(FAT_MAGIC) ) { | |
1091 | const struct fat_header* fh = (struct fat_header*)p; | |
1092 | const struct fat_arch* archs = (struct fat_arch*)(p + sizeof(struct fat_header)); | |
1093 | for (unsigned long i=0; i < OSSwapBigToHostInt32(fh->nfat_arch); ++i) { | |
1094 | size_t offset = OSSwapBigToHostInt32(archs[i].offset); | |
1095 | size_t size = OSSwapBigToHostInt32(archs[i].size); | |
1096 | unsigned int cputype = OSSwapBigToHostInt32(archs[i].cputype); | |
1097 | if ( onlyArchs.count(cputype) ) { | |
1098 | switch(cputype) { | |
55e3d2f6 A |
1099 | case CPU_TYPE_I386: |
1100 | if ( UnwindPrinter<x86>::validFile(p + offset) ) | |
a645023d | 1101 | UnwindPrinter<x86>::make(p + offset, size, path, showFunctionNames); |
55e3d2f6 A |
1102 | else |
1103 | throw "in universal file, i386 slice does not contain i386 mach-o"; | |
1104 | break; | |
55e3d2f6 A |
1105 | case CPU_TYPE_X86_64: |
1106 | if ( UnwindPrinter<x86_64>::validFile(p + offset) ) | |
a645023d | 1107 | UnwindPrinter<x86_64>::make(p + offset, size, path, showFunctionNames); |
55e3d2f6 A |
1108 | else |
1109 | throw "in universal file, x86_64 slice does not contain x86_64 mach-o"; | |
1110 | break; | |
f80fe69f A |
1111 | #if SUPPORT_ARCH_arm64 |
1112 | case CPU_TYPE_ARM64: | |
1113 | if ( UnwindPrinter<arm64>::validFile(p + offset) ) | |
1114 | UnwindPrinter<arm64>::make(p + offset, size, path, showFunctionNames); | |
1115 | else | |
599556ff | 1116 | throw "in universal file, arm64 slice does not contain arm64 mach-o"; |
f80fe69f A |
1117 | break; |
1118 | #endif | |
ba348e21 A |
1119 | case CPU_TYPE_ARM: |
1120 | if ( UnwindPrinter<arm>::validFile(p + offset) ) | |
1121 | UnwindPrinter<arm>::make(p + offset, size, path, showFunctionNames); | |
1122 | else | |
1123 | throw "in universal file, arm slice does not contain arm mach-o"; | |
1124 | break; | |
55e3d2f6 A |
1125 | default: |
1126 | throwf("in universal file, unknown architecture slice 0x%x\n", cputype); | |
1127 | } | |
1128 | } | |
1129 | } | |
1130 | } | |
1131 | else if ( UnwindPrinter<x86>::validFile(p) && onlyArchs.count(CPU_TYPE_I386) ) { | |
a645023d | 1132 | UnwindPrinter<x86>::make(p, length, path, showFunctionNames); |
55e3d2f6 | 1133 | } |
55e3d2f6 | 1134 | else if ( UnwindPrinter<x86_64>::validFile(p) && onlyArchs.count(CPU_TYPE_X86_64) ) { |
a645023d | 1135 | UnwindPrinter<x86_64>::make(p, length, path, showFunctionNames); |
55e3d2f6 | 1136 | } |
f80fe69f A |
1137 | #if SUPPORT_ARCH_arm64 |
1138 | else if ( UnwindPrinter<arm64>::validFile(p) && onlyArchs.count(CPU_TYPE_ARM64) ) { | |
1139 | UnwindPrinter<arm64>::make(p, length, path, showFunctionNames); | |
1140 | } | |
1141 | #endif | |
ba348e21 A |
1142 | else if ( UnwindPrinter<arm>::validFile(p) && onlyArchs.count(CPU_TYPE_ARM) ) { |
1143 | UnwindPrinter<arm>::make(p, length, path, showFunctionNames); | |
1144 | } | |
55e3d2f6 A |
1145 | else { |
1146 | throw "not a known file type"; | |
1147 | } | |
1148 | } | |
1149 | catch (const char* msg) { | |
1150 | throwf("%s in %s", msg, path); | |
1151 | } | |
1152 | } | |
1153 | ||
1154 | ||
1155 | int main(int argc, const char* argv[]) | |
1156 | { | |
1157 | std::set<cpu_type_t> onlyArchs; | |
1158 | std::vector<const char*> files; | |
a645023d | 1159 | bool showFunctionNames = true; |
55e3d2f6 A |
1160 | |
1161 | try { | |
1162 | for(int i=1; i < argc; ++i) { | |
1163 | const char* arg = argv[i]; | |
1164 | if ( arg[0] == '-' ) { | |
1165 | if ( strcmp(arg, "-arch") == 0 ) { | |
1166 | const char* arch = argv[++i]; | |
afe874b1 | 1167 | if ( strcmp(arch, "i386") == 0 ) |
55e3d2f6 A |
1168 | onlyArchs.insert(CPU_TYPE_I386); |
1169 | else if ( strcmp(arch, "x86_64") == 0 ) | |
1170 | onlyArchs.insert(CPU_TYPE_X86_64); | |
f80fe69f A |
1171 | #if SUPPORT_ARCH_arm64 |
1172 | else if ( strcmp(arch, "arm64") == 0 ) | |
1173 | onlyArchs.insert(CPU_TYPE_ARM64); | |
1174 | #endif | |
ba348e21 A |
1175 | else if ( strcmp(arch, "armv7k") == 0 ) |
1176 | onlyArchs.insert(CPU_TYPE_ARM); | |
55e3d2f6 A |
1177 | else |
1178 | throwf("unknown architecture %s", arch); | |
1179 | } | |
a645023d A |
1180 | else if ( strcmp(arg, "-no_symbols") == 0 ) { |
1181 | showFunctionNames = false; | |
1182 | } | |
55e3d2f6 A |
1183 | else { |
1184 | throwf("unknown option: %s\n", arg); | |
1185 | } | |
1186 | } | |
1187 | else { | |
1188 | files.push_back(arg); | |
1189 | } | |
1190 | } | |
1191 | ||
1192 | // use all architectures if no restrictions specified | |
1193 | if ( onlyArchs.size() == 0 ) { | |
55e3d2f6 A |
1194 | onlyArchs.insert(CPU_TYPE_I386); |
1195 | onlyArchs.insert(CPU_TYPE_X86_64); | |
f80fe69f A |
1196 | #if SUPPORT_ARCH_arm64 |
1197 | onlyArchs.insert(CPU_TYPE_ARM64); | |
1198 | #endif | |
599556ff | 1199 | onlyArchs.insert(CPU_TYPE_ARM); |
55e3d2f6 A |
1200 | } |
1201 | ||
1202 | // process each file | |
1203 | for(std::vector<const char*>::iterator it=files.begin(); it != files.end(); ++it) { | |
a645023d | 1204 | dump(*it, onlyArchs, showFunctionNames); |
55e3d2f6 A |
1205 | } |
1206 | ||
1207 | } | |
1208 | catch (const char* msg) { | |
1209 | fprintf(stderr, "UnwindDump failed: %s\n", msg); | |
1210 | return 1; | |
1211 | } | |
1212 | ||
1213 | return 0; | |
1214 | } | |
1215 | ||
1216 | ||
1217 |