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DynamicLoaderDarwin.cpp
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1//===-- DynamicLoaderDarwin.cpp -------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
10
12#include "lldb/Core/Debugger.h"
13#include "lldb/Core/Module.h"
16#include "lldb/Core/Section.h"
19#include "lldb/Host/HostInfo.h"
22#include "lldb/Target/ABI.h"
25#include "lldb/Target/Target.h"
26#include "lldb/Target/Thread.h"
32#include "lldb/Utility/Log.h"
33#include "lldb/Utility/State.h"
34
37
38//#define ENABLE_DEBUG_PRINTF // COMMENT THIS LINE OUT PRIOR TO CHECKIN
39#ifdef ENABLE_DEBUG_PRINTF
40#include <cstdio>
41#define DEBUG_PRINTF(fmt, ...) printf(fmt, ##__VA_ARGS__)
42#else
43#define DEBUG_PRINTF(fmt, ...)
44#endif
45
46#include <memory>
47
48using namespace lldb;
49using namespace lldb_private;
50
51// Constructor
53 : DynamicLoader(process), m_dyld_module_wp(), m_libpthread_module_wp(),
54 m_pthread_getspecific_addr(), m_tid_to_tls_map(), m_dyld_image_infos(),
55 m_dyld_image_infos_stop_id(UINT32_MAX), m_dyld(), m_mutex() {}
56
57// Destructor
59
60/// Called after attaching a process.
61///
62/// Allow DynamicLoader plug-ins to execute some code after
63/// attaching to a process.
68}
69
70/// Called after attaching a process.
71///
72/// Allow DynamicLoader plug-ins to execute some code after
73/// attaching to a process.
78}
79
80// Clear out the state of this class.
81void DynamicLoaderDarwin::Clear(bool clear_process) {
82 std::lock_guard<std::recursive_mutex> guard(m_mutex);
83 if (clear_process)
84 m_process = nullptr;
85 m_dyld_image_infos.clear();
87 m_dyld.Clear(false);
88}
89
91 ImageInfo &image_info, bool can_create, bool *did_create_ptr) {
92 if (did_create_ptr)
93 *did_create_ptr = false;
94
95 Target &target = m_process->GetTarget();
96 const ModuleList &target_images = target.GetImages();
97 ModuleSpec module_spec(image_info.file_spec);
98 module_spec.GetUUID() = image_info.uuid;
99
100 // macCatalyst support: Request matching os/environment.
101 {
102 auto &target_triple = target.GetArchitecture().GetTriple();
103 if (target_triple.getOS() == llvm::Triple::IOS &&
104 target_triple.getEnvironment() == llvm::Triple::MacABI) {
105 // Request the macCatalyst variant of frameworks that have both
106 // a PLATFORM_MACOS and a PLATFORM_MACCATALYST load command.
107 module_spec.GetArchitecture() = ArchSpec(target_triple);
108 }
109 }
110
111 ModuleSP module_sp(target_images.FindFirstModule(module_spec));
112
113 if (module_sp && !module_spec.GetUUID().IsValid() &&
114 !module_sp->GetUUID().IsValid()) {
115 // No UUID, we must rely upon the cached module modification time and the
116 // modification time of the file on disk
117 if (module_sp->GetModificationTime() !=
118 FileSystem::Instance().GetModificationTime(module_sp->GetFileSpec()))
119 module_sp.reset();
120 }
121
122 if (module_sp || !can_create)
123 return module_sp;
124
125 if (HostInfo::GetArchitecture().IsCompatibleMatch(target.GetArchitecture())) {
126 // When debugging on the host, we are most likely using the same shared
127 // cache as our inferior. The dylibs from the shared cache might not
128 // exist on the filesystem, so let's use the images in our own memory
129 // to create the modules.
130 // Check if the requested image is in our shared cache.
131 SharedCacheImageInfo image_info =
132 HostInfo::GetSharedCacheImageInfo(module_spec.GetFileSpec().GetPath());
133
134 // If we found it and it has the correct UUID, let's proceed with
135 // creating a module from the memory contents.
136 if (image_info.uuid &&
137 (!module_spec.GetUUID() || module_spec.GetUUID() == image_info.uuid)) {
138 ModuleSpec shared_cache_spec(module_spec.GetFileSpec(), image_info.uuid,
139 image_info.data_sp);
140 module_sp =
141 target.GetOrCreateModule(shared_cache_spec, false /* notify */);
142 }
143 }
144 // We'll call Target::ModulesDidLoad after all the modules have been
145 // added to the target, don't let it be called for every one.
146 if (!module_sp)
147 module_sp = target.GetOrCreateModule(module_spec, false /* notify */);
148 if (!module_sp || module_sp->GetObjectFile() == nullptr)
149 module_sp = m_process->ReadModuleFromMemory(image_info.file_spec,
150 image_info.address);
151
152 if (did_create_ptr)
153 *did_create_ptr = (bool)module_sp;
154
155 return module_sp;
156}
157
159 const std::vector<lldb::addr_t> &solib_addresses) {
160 std::lock_guard<std::recursive_mutex> guard(m_mutex);
162 return;
163
165 Target &target = m_process->GetTarget();
166 LLDB_LOGF(log, "Removing %" PRId64 " modules.",
167 (uint64_t)solib_addresses.size());
168
169 ModuleList unloaded_module_list;
170
171 for (addr_t solib_addr : solib_addresses) {
172 Address header;
173 if (header.SetLoadAddress(solib_addr, &target)) {
174 if (header.GetOffset() == 0) {
175 ModuleSP module_to_remove(header.GetModule());
176 if (module_to_remove.get()) {
177 LLDB_LOGF(log, "Removing module at address 0x%" PRIx64, solib_addr);
178 // remove the sections from the Target
179 UnloadSections(module_to_remove);
180 // add this to the list of modules to remove
181 unloaded_module_list.AppendIfNeeded(module_to_remove);
182 // remove the entry from the m_dyld_image_infos
183 ImageInfo::collection::iterator pos, end = m_dyld_image_infos.end();
184 for (pos = m_dyld_image_infos.begin(); pos != end; pos++) {
185 if (solib_addr == (*pos).address) {
186 m_dyld_image_infos.erase(pos);
187 break;
188 }
189 }
190 }
191 }
192 }
193 }
194
195 if (unloaded_module_list.GetSize() > 0) {
196 if (log) {
197 log->PutCString("Unloaded:");
198 unloaded_module_list.LogUUIDAndPaths(
199 log, "DynamicLoaderDarwin::UnloadModules");
200 }
201 m_process->GetTarget().GetImages().Remove(unloaded_module_list);
203 }
204}
205
208 ModuleList unloaded_modules_list;
209
210 Target &target = m_process->GetTarget();
211 const ModuleList &target_modules = target.GetImages();
212 std::lock_guard<std::recursive_mutex> guard(target_modules.GetMutex());
213
214 ModuleSP dyld_sp(GetDYLDModule());
215 for (ModuleSP module_sp : target_modules.Modules()) {
216 // Don't remove dyld - else we'll lose our breakpoint notifying us about
217 // libraries being re-loaded...
218 if (module_sp && module_sp != dyld_sp) {
219 UnloadSections(module_sp);
220 unloaded_modules_list.Append(module_sp);
221 }
222 }
223
224 if (unloaded_modules_list.GetSize() != 0) {
225 if (log) {
226 log->PutCString("Unloaded:");
227 unloaded_modules_list.LogUUIDAndPaths(
228 log, "DynamicLoaderDarwin::UnloadAllImages");
229 }
230 target.GetImages().Remove(unloaded_modules_list);
231 m_dyld_image_infos.clear();
233 }
234}
235
236// Update the load addresses for all segments in MODULE using the updated INFO
237// that is passed in.
239 ImageInfo &info) {
240 bool changed = false;
241 if (module) {
242 ObjectFile *image_object_file = module->GetObjectFile();
243 if (image_object_file) {
244 SectionList *section_list = image_object_file->GetSectionList();
245 if (section_list) {
246 std::vector<uint32_t> inaccessible_segment_indexes;
247 // We now know the slide amount, so go through all sections and update
248 // the load addresses with the correct values.
249 const size_t num_segments = info.segments.size();
250 for (size_t i = 0; i < num_segments; ++i) {
251 // Only load a segment if it has protections. Things like __PAGEZERO
252 // don't have any protections, and they shouldn't be slid
253 SectionSP section_sp(
254 section_list->FindSectionByName(info.segments[i].name));
255
256 if (info.segments[i].maxprot == 0) {
257 inaccessible_segment_indexes.push_back(i);
258 } else {
259 const addr_t new_section_load_addr =
260 info.segments[i].vmaddr + info.slide;
261 static ConstString g_section_name_LINKEDIT("__LINKEDIT");
262
263 if (section_sp) {
264 // __LINKEDIT sections from files in the shared cache can overlap
265 // so check to see what the segment name is and pass "false" so
266 // we don't warn of overlapping "Section" objects, and "true" for
267 // all other sections.
268 const bool warn_multiple =
269 section_sp->GetName() != g_section_name_LINKEDIT;
270
272 section_sp, new_section_load_addr, warn_multiple);
273 }
274 }
275 }
276
277 // If the loaded the file (it changed) and we have segments that are
278 // not readable or writeable, add them to the invalid memory region
279 // cache for the process. This will typically only be the __PAGEZERO
280 // segment in the main executable. We might be able to apply this more
281 // generally to more sections that have no protections in the future,
282 // but for now we are going to just do __PAGEZERO.
283 if (changed && !inaccessible_segment_indexes.empty()) {
284 for (uint32_t i = 0; i < inaccessible_segment_indexes.size(); ++i) {
285 const uint32_t seg_idx = inaccessible_segment_indexes[i];
286 SectionSP section_sp(
287 section_list->FindSectionByName(info.segments[seg_idx].name));
288
289 if (section_sp) {
290 static ConstString g_pagezero_section_name("__PAGEZERO");
291 if (g_pagezero_section_name == section_sp->GetName()) {
292 // __PAGEZERO never slides...
293 const lldb::addr_t vmaddr = info.segments[seg_idx].vmaddr;
294 const lldb::addr_t vmsize = info.segments[seg_idx].vmsize;
295 Process::LoadRange pagezero_range(vmaddr, vmsize);
296 m_process->AddInvalidMemoryRegion(pagezero_range);
297 }
298 }
299 }
300 }
301 }
302 }
303 }
304 // We might have an in memory image that was loaded as soon as it was created
305 if (info.load_stop_id == m_process->GetStopID())
306 changed = true;
307 else if (changed) {
308 // Update the stop ID when this library was updated
310 }
311 return changed;
312}
313
314// Unload the segments in MODULE using the INFO that is passed in.
316 ImageInfo &info) {
317 bool changed = false;
318 if (module) {
319 ObjectFile *image_object_file = module->GetObjectFile();
320 if (image_object_file) {
321 SectionList *section_list = image_object_file->GetSectionList();
322 if (section_list) {
323 const size_t num_segments = info.segments.size();
324 for (size_t i = 0; i < num_segments; ++i) {
325 SectionSP section_sp(
326 section_list->FindSectionByName(info.segments[i].name));
327 if (section_sp) {
328 const addr_t old_section_load_addr =
329 info.segments[i].vmaddr + info.slide;
331 section_sp, old_section_load_addr))
332 changed = true;
333 } else {
335 llvm::formatv("unable to find and unload segment named "
336 "'{0}' in '{1}' in macosx dynamic loader plug-in",
337 info.segments[i].name.AsCString("<invalid>"),
338 image_object_file->GetFileSpec().GetPath()));
339 }
340 }
341 }
342 }
343 }
344 return changed;
345}
346
347// Given a JSON dictionary (from debugserver, most likely) of binary images
348// loaded in the inferior process, add the images to the ImageInfo collection.
349
351 StructuredData::ObjectSP image_details,
352 ImageInfo::collection &image_infos) {
353 StructuredData::ObjectSP images_sp =
354 image_details->GetAsDictionary()->GetValueForKey("images");
355 if (images_sp.get() == nullptr)
356 return false;
357
358 image_infos.resize(images_sp->GetAsArray()->GetSize());
359
360 for (size_t i = 0; i < image_infos.size(); i++) {
361 StructuredData::ObjectSP image_sp =
362 images_sp->GetAsArray()->GetItemAtIndex(i);
363 if (image_sp.get() == nullptr || image_sp->GetAsDictionary() == nullptr)
364 return false;
365 StructuredData::Dictionary *image = image_sp->GetAsDictionary();
366 // clang-format off
367 if (!image->HasKey("load_address") ||
368 !image->HasKey("pathname") ||
369 !image->HasKey("mach_header") ||
370 image->GetValueForKey("mach_header")->GetAsDictionary() == nullptr ||
371 !image->HasKey("segments") ||
372 image->GetValueForKey("segments")->GetAsArray() == nullptr ||
373 !image->HasKey("uuid")) {
374 return false;
375 }
376 // clang-format on
377 image_infos[i].address =
378 image->GetValueForKey("load_address")->GetUnsignedIntegerValue();
379 image_infos[i].file_spec.SetFile(
380 image->GetValueForKey("pathname")->GetAsString()->GetValue(),
381 FileSpec::Style::native);
382
384 image->GetValueForKey("mach_header")->GetAsDictionary();
385 image_infos[i].header.magic =
386 mh->GetValueForKey("magic")->GetUnsignedIntegerValue();
387 image_infos[i].header.cputype =
388 mh->GetValueForKey("cputype")->GetUnsignedIntegerValue();
389 image_infos[i].header.cpusubtype =
390 mh->GetValueForKey("cpusubtype")->GetUnsignedIntegerValue();
391 image_infos[i].header.filetype =
392 mh->GetValueForKey("filetype")->GetUnsignedIntegerValue();
393
394 if (image->HasKey("min_version_os_name")) {
395 std::string os_name =
396 std::string(image->GetValueForKey("min_version_os_name")
397 ->GetAsString()
398 ->GetValue());
399 if (os_name == "macosx")
400 image_infos[i].os_type = llvm::Triple::MacOSX;
401 else if (os_name == "ios" || os_name == "iphoneos")
402 image_infos[i].os_type = llvm::Triple::IOS;
403 else if (os_name == "tvos")
404 image_infos[i].os_type = llvm::Triple::TvOS;
405 else if (os_name == "watchos")
406 image_infos[i].os_type = llvm::Triple::WatchOS;
407 else if (os_name == "bridgeos")
408 image_infos[i].os_type = llvm::Triple::BridgeOS;
409 else if (os_name == "maccatalyst") {
410 image_infos[i].os_type = llvm::Triple::IOS;
411 image_infos[i].os_env = llvm::Triple::MacABI;
412 } else if (os_name == "iossimulator") {
413 image_infos[i].os_type = llvm::Triple::IOS;
414 image_infos[i].os_env = llvm::Triple::Simulator;
415 } else if (os_name == "tvossimulator") {
416 image_infos[i].os_type = llvm::Triple::TvOS;
417 image_infos[i].os_env = llvm::Triple::Simulator;
418 } else if (os_name == "watchossimulator") {
419 image_infos[i].os_type = llvm::Triple::WatchOS;
420 image_infos[i].os_env = llvm::Triple::Simulator;
421 }
422 }
423 if (image->HasKey("min_version_os_sdk")) {
424 image_infos[i].min_version_os_sdk =
425 std::string(image->GetValueForKey("min_version_os_sdk")
426 ->GetAsString()
427 ->GetValue());
428 }
429
430 // Fields that aren't used by DynamicLoaderDarwin so debugserver doesn't
431 // currently send them in the reply.
432
433 if (mh->HasKey("flags"))
434 image_infos[i].header.flags =
435 mh->GetValueForKey("flags")->GetUnsignedIntegerValue();
436 else
437 image_infos[i].header.flags = 0;
438
439 if (mh->HasKey("ncmds"))
440 image_infos[i].header.ncmds =
441 mh->GetValueForKey("ncmds")->GetUnsignedIntegerValue();
442 else
443 image_infos[i].header.ncmds = 0;
444
445 if (mh->HasKey("sizeofcmds"))
446 image_infos[i].header.sizeofcmds =
447 mh->GetValueForKey("sizeofcmds")->GetUnsignedIntegerValue();
448 else
449 image_infos[i].header.sizeofcmds = 0;
450
451 StructuredData::Array *segments =
452 image->GetValueForKey("segments")->GetAsArray();
453 uint32_t segcount = segments->GetSize();
454 for (size_t j = 0; j < segcount; j++) {
455 Segment segment;
457 segments->GetItemAtIndex(j)->GetAsDictionary();
458 segment.name =
459 ConstString(seg->GetValueForKey("name")->GetAsString()->GetValue());
460 segment.vmaddr = seg->GetValueForKey("vmaddr")->GetUnsignedIntegerValue();
461 segment.vmsize = seg->GetValueForKey("vmsize")->GetUnsignedIntegerValue();
462 segment.fileoff =
463 seg->GetValueForKey("fileoff")->GetUnsignedIntegerValue();
464 segment.filesize =
465 seg->GetValueForKey("filesize")->GetUnsignedIntegerValue();
466 segment.maxprot =
467 seg->GetValueForKey("maxprot")->GetUnsignedIntegerValue();
468
469 // Fields that aren't used by DynamicLoaderDarwin so debugserver doesn't
470 // currently send them in the reply.
471
472 if (seg->HasKey("initprot"))
473 segment.initprot =
474 seg->GetValueForKey("initprot")->GetUnsignedIntegerValue();
475 else
476 segment.initprot = 0;
477
478 if (seg->HasKey("flags"))
479 segment.flags = seg->GetValueForKey("flags")->GetUnsignedIntegerValue();
480 else
481 segment.flags = 0;
482
483 if (seg->HasKey("nsects"))
484 segment.nsects =
485 seg->GetValueForKey("nsects")->GetUnsignedIntegerValue();
486 else
487 segment.nsects = 0;
488
489 image_infos[i].segments.push_back(segment);
490 }
491
492 image_infos[i].uuid.SetFromStringRef(
493 image->GetValueForKey("uuid")->GetAsString()->GetValue());
494
495 // All sections listed in the dyld image info structure will all either be
496 // fixed up already, or they will all be off by a single slide amount that
497 // is determined by finding the first segment that is at file offset zero
498 // which also has bytes (a file size that is greater than zero) in the
499 // object file.
500
501 // Determine the slide amount (if any)
502 const size_t num_sections = image_infos[i].segments.size();
503 for (size_t k = 0; k < num_sections; ++k) {
504 // Iterate through the object file sections to find the first section
505 // that starts of file offset zero and that has bytes in the file...
506 if ((image_infos[i].segments[k].fileoff == 0 &&
507 image_infos[i].segments[k].filesize > 0) ||
508 (image_infos[i].segments[k].name == "__TEXT")) {
509 image_infos[i].slide =
510 image_infos[i].address - image_infos[i].segments[k].vmaddr;
511 // We have found the slide amount, so we can exit this for loop.
512 break;
513 }
514 }
515 }
516
517 return true;
518}
519
521 ImageInfo::collection &image_infos) {
522 uint32_t exe_idx = UINT32_MAX;
523 uint32_t dyld_idx = UINT32_MAX;
524 Target &target = m_process->GetTarget();
526 ConstString g_dyld_sim_filename("dyld_sim");
527
528 ArchSpec target_arch = target.GetArchitecture();
529 const size_t image_infos_size = image_infos.size();
530 for (size_t i = 0; i < image_infos_size; i++) {
531 if (image_infos[i].header.filetype == llvm::MachO::MH_DYLINKER) {
532 // In a "simulator" process we will have two dyld modules --
533 // a "dyld" that we want to keep track of, and a "dyld_sim" which
534 // we don't need to keep track of here. dyld_sim will have a non-macosx
535 // OS.
536 if (target_arch.GetTriple().getEnvironment() == llvm::Triple::Simulator &&
537 image_infos[i].os_type != llvm::Triple::OSType::MacOSX) {
538 continue;
539 }
540
541 dyld_idx = i;
542 }
543 if (image_infos[i].header.filetype == llvm::MachO::MH_EXECUTE) {
544 exe_idx = i;
545 }
546 }
547
548 // Set the target executable if we haven't found one so far.
549 if (exe_idx != UINT32_MAX && !target.GetExecutableModule()) {
550 const bool can_create = true;
551 ModuleSP exe_module_sp(FindTargetModuleForImageInfo(image_infos[exe_idx],
552 can_create, nullptr));
553 if (exe_module_sp) {
554 LLDB_LOGF(log, "Found executable module: %s",
555 exe_module_sp->GetFileSpec().GetPath().c_str());
556 target.GetImages().AppendIfNeeded(exe_module_sp);
557 UpdateImageLoadAddress(exe_module_sp.get(), image_infos[exe_idx]);
558 if (exe_module_sp.get() != target.GetExecutableModulePointer())
559 target.SetExecutableModule(exe_module_sp, eLoadDependentsNo);
560
561 // Update the target executable's arch if necessary.
562 auto exe_triple = exe_module_sp->GetArchitecture().GetTriple();
563 if (target_arch.GetTriple().isArm64e() &&
564 exe_triple.getArch() == llvm::Triple::aarch64 &&
565 !exe_triple.isArm64e()) {
566 // On arm64e-capable Apple platforms, the system libraries are
567 // always arm64e, but applications often are arm64. When a
568 // target is created from a file, LLDB recognizes it as an
569 // arm64 target, but debugserver will still (technically
570 // correct) report the process as being arm64e. For
571 // consistency, set the target to arm64 here, so attaching to
572 // a live process behaves the same as creating a process from
573 // file.
574 auto triple = target_arch.GetTriple();
575 triple.setArchName(exe_triple.getArchName());
576 target_arch.SetTriple(triple);
577 target.SetArchitecture(target_arch, /*set_platform=*/false,
578 /*merge=*/false);
579 }
580 }
581 }
582
583 if (dyld_idx != UINT32_MAX) {
584 const bool can_create = true;
585 ModuleSP dyld_sp = FindTargetModuleForImageInfo(image_infos[dyld_idx],
586 can_create, nullptr);
587 if (dyld_sp.get()) {
588 LLDB_LOGF(log, "Found dyld module: %s",
589 dyld_sp->GetFileSpec().GetPath().c_str());
590 target.GetImages().AppendIfNeeded(dyld_sp);
591 UpdateImageLoadAddress(dyld_sp.get(), image_infos[dyld_idx]);
592 SetDYLDModule(dyld_sp);
593 }
594 }
595}
596
598 ImageInfo &image_info) {
599 if (image_info.header.filetype == llvm::MachO::MH_DYLINKER) {
600 const bool can_create = true;
601 ModuleSP dyld_sp =
602 FindTargetModuleForImageInfo(image_info, can_create, nullptr);
603 if (dyld_sp.get()) {
604 Target &target = m_process->GetTarget();
605 target.GetImages().AppendIfNeeded(dyld_sp);
606 UpdateImageLoadAddress(dyld_sp.get(), image_info);
607 SetDYLDModule(dyld_sp);
608 }
609 }
610}
611
613 m_dyld_module_wp = dyld_module_sp;
614}
615
617 ModuleSP dyld_sp(m_dyld_module_wp.lock());
618 return dyld_sp;
619}
620
622
624 ImageInfo::collection &image_infos) {
625 std::lock_guard<std::recursive_mutex> guard(m_mutex);
626 // Now add these images to the main list.
627 ModuleList loaded_module_list;
629 Target &target = m_process->GetTarget();
630 ModuleList &target_images = target.GetImages();
631
632 for (uint32_t idx = 0; idx < image_infos.size(); ++idx) {
633 if (log) {
634 LLDB_LOGF(log, "Adding new image at address=0x%16.16" PRIx64 ".",
635 image_infos[idx].address);
636 image_infos[idx].PutToLog(log);
637 }
638
639 m_dyld_image_infos.push_back(image_infos[idx]);
640
641 ModuleSP image_module_sp(
642 FindTargetModuleForImageInfo(image_infos[idx], true, nullptr));
643
644 if (image_module_sp) {
645 ObjectFile *objfile = image_module_sp->GetObjectFile();
646 if (objfile) {
647 SectionList *sections = objfile->GetSectionList();
648 if (sections) {
649 ConstString commpage_dbstr("__commpage");
650 Section *commpage_section =
651 sections->FindSectionByName(commpage_dbstr).get();
652 if (commpage_section) {
653 ModuleSpec module_spec(objfile->GetFileSpec(),
654 image_infos[idx].GetArchitecture());
655 module_spec.GetObjectName() = commpage_dbstr;
656 ModuleSP commpage_image_module_sp(
657 target_images.FindFirstModule(module_spec));
658 if (!commpage_image_module_sp) {
659 module_spec.SetObjectOffset(objfile->GetFileOffset() +
660 commpage_section->GetFileOffset());
661 module_spec.SetObjectSize(objfile->GetByteSize());
662 commpage_image_module_sp = target.GetOrCreateModule(module_spec,
663 true /* notify */);
664 if (!commpage_image_module_sp ||
665 commpage_image_module_sp->GetObjectFile() == nullptr) {
666 commpage_image_module_sp = m_process->ReadModuleFromMemory(
667 image_infos[idx].file_spec, image_infos[idx].address);
668 // Always load a memory image right away in the target in case
669 // we end up trying to read the symbol table from memory... The
670 // __LINKEDIT will need to be mapped so we can figure out where
671 // the symbol table bits are...
672 bool changed = false;
673 UpdateImageLoadAddress(commpage_image_module_sp.get(),
674 image_infos[idx]);
675 target.GetImages().Append(commpage_image_module_sp);
676 if (changed) {
677 image_infos[idx].load_stop_id = m_process->GetStopID();
678 loaded_module_list.AppendIfNeeded(commpage_image_module_sp);
679 }
680 }
681 }
682 }
683 }
684 }
685
686 // UpdateImageLoadAddress will return true if any segments change load
687 // address. We need to check this so we don't mention that all loaded
688 // shared libraries are newly loaded each time we hit out dyld breakpoint
689 // since dyld will list all shared libraries each time.
690 if (UpdateImageLoadAddress(image_module_sp.get(), image_infos[idx])) {
691 target_images.AppendIfNeeded(image_module_sp);
692 loaded_module_list.AppendIfNeeded(image_module_sp);
693 }
694
695 // To support macCatalyst and legacy iOS simulator,
696 // update the module's platform with the DYLD info.
697 ArchSpec dyld_spec = image_infos[idx].GetArchitecture();
698 auto &dyld_triple = dyld_spec.GetTriple();
699 if ((dyld_triple.getEnvironment() == llvm::Triple::MacABI &&
700 dyld_triple.getOS() == llvm::Triple::IOS) ||
701 (dyld_triple.getEnvironment() == llvm::Triple::Simulator &&
702 (dyld_triple.getOS() == llvm::Triple::IOS ||
703 dyld_triple.getOS() == llvm::Triple::TvOS ||
704 dyld_triple.getOS() == llvm::Triple::WatchOS)))
705 image_module_sp->MergeArchitecture(dyld_spec);
706 }
707 }
708
709 if (loaded_module_list.GetSize() > 0) {
710 if (log)
711 loaded_module_list.LogUUIDAndPaths(log,
712 "DynamicLoaderDarwin::ModulesDidLoad");
713 m_process->GetTarget().ModulesDidLoad(loaded_module_list);
714 }
715 return true;
716}
717
718// On Mac OS X libobjc (the Objective-C runtime) has several critical dispatch
719// functions written in hand-written assembly, and also have hand-written
720// unwind information in the eh_frame section. Normally we prefer analyzing
721// the assembly instructions of a currently executing frame to unwind from that
722// frame -- but on hand-written functions this profiling can fail. We should
723// use the eh_frame instructions for these functions all the time.
724//
725// As an aside, it would be better if the eh_frame entries had a flag (or were
726// extensible so they could have an Apple-specific flag) which indicates that
727// the instructions are asynchronous -- accurate at every instruction, instead
728// of our normal default assumption that they are not.
729
731 ModuleSP module_sp;
732 if (sym_ctx.symbol) {
733 module_sp = sym_ctx.symbol->GetAddressRef().GetModule();
734 }
735 if (module_sp.get() == nullptr && sym_ctx.function) {
736 module_sp =
738 }
739 if (module_sp.get() == nullptr)
740 return false;
741
743 return objc_runtime != nullptr &&
744 objc_runtime->IsModuleObjCLibrary(module_sp);
745}
746
747// Dump a Segment to the file handle provided.
749 lldb::addr_t slide) const {
750 if (log) {
751 if (slide == 0)
752 LLDB_LOGF(log, "\t\t%16s [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ")",
753 name.AsCString(""), vmaddr + slide, vmaddr + slide + vmsize);
754 else
755 LLDB_LOGF(log,
756 "\t\t%16s [0x%16.16" PRIx64 " - 0x%16.16" PRIx64
757 ") slide = 0x%" PRIx64,
758 name.AsCString(""), vmaddr + slide, vmaddr + slide + vmsize,
759 slide);
760 }
761}
762
764 // Update the module's platform with the DYLD info.
766 header.cpusubtype);
767 if (os_env == llvm::Triple::MacABI && os_type == llvm::Triple::IOS) {
768 llvm::Triple triple(llvm::Twine(arch_spec.GetArchitectureName()) +
769 "-apple-ios" + min_version_os_sdk + "-macabi");
770 ArchSpec maccatalyst_spec(triple);
771 if (arch_spec.IsCompatibleMatch(maccatalyst_spec))
772 arch_spec.MergeFrom(maccatalyst_spec);
773 }
774 if (os_env == llvm::Triple::Simulator &&
775 (os_type == llvm::Triple::IOS || os_type == llvm::Triple::TvOS ||
776 os_type == llvm::Triple::WatchOS)) {
777 llvm::Triple triple(llvm::Twine(arch_spec.GetArchitectureName()) +
778 "-apple-" + llvm::Triple::getOSTypeName(os_type) +
779 min_version_os_sdk + "-simulator");
780 ArchSpec sim_spec(triple);
781 if (arch_spec.IsCompatibleMatch(sim_spec))
782 arch_spec.MergeFrom(sim_spec);
783 }
784 return arch_spec;
785}
786
789 const size_t num_segments = segments.size();
790 for (size_t i = 0; i < num_segments; ++i) {
791 if (segments[i].name == name)
792 return &segments[i];
793 }
794 return nullptr;
795}
796
797// Dump an image info structure to the file handle provided.
799 if (!log)
800 return;
801 if (address == LLDB_INVALID_ADDRESS) {
802 LLDB_LOG(log, "uuid={1} path='{2}' (UNLOADED)", uuid.GetAsString(),
803 file_spec.GetPath());
804 } else {
805 LLDB_LOG(log, "address={0:x+16} uuid={1} path='{2}'", address,
806 uuid.GetAsString(), file_spec.GetPath());
807 for (uint32_t i = 0; i < segments.size(); ++i)
808 segments[i].PutToLog(log, slide);
809 }
810}
811
813 DEBUG_PRINTF("DynamicLoaderDarwin::%s() process state = %s\n", __FUNCTION__,
815 Clear(true);
816 m_process = process;
818}
819
820// Member function that gets called when the process state changes.
822 StateType state) {
823 DEBUG_PRINTF("DynamicLoaderDarwin::%s(%s)\n", __FUNCTION__,
824 StateAsCString(state));
825 switch (state) {
826 case eStateConnected:
827 case eStateAttaching:
828 case eStateLaunching:
829 case eStateInvalid:
830 case eStateUnloaded:
831 case eStateExited:
832 case eStateDetached:
833 Clear(false);
834 break;
835
836 case eStateStopped:
837 // Keep trying find dyld and set our notification breakpoint each time we
838 // stop until we succeed
842
844 }
845 break;
846
847 case eStateRunning:
848 case eStateStepping:
849 case eStateCrashed:
850 case eStateSuspended:
851 break;
852 }
853}
854
857 bool stop_others) {
858 ThreadPlanSP thread_plan_sp;
859 StackFrame *current_frame = thread.GetStackFrameAtIndex(0).get();
860 const SymbolContext &current_context =
861 current_frame->GetSymbolContext(eSymbolContextSymbol);
862 Symbol *current_symbol = current_context.symbol;
863 Log *log = GetLog(LLDBLog::Step);
864 TargetSP target_sp(thread.CalculateTarget());
865
866 if (current_symbol != nullptr) {
867 std::vector<Address> addresses;
868
869 if (current_symbol->IsTrampoline()) {
870 ConstString trampoline_name =
871 current_symbol->GetMangled().GetName(Mangled::ePreferMangled);
872
873 if (trampoline_name) {
874 const ModuleList &images = target_sp->GetImages();
875
876 SymbolContextList code_symbols;
877 images.FindSymbolsWithNameAndType(trampoline_name, eSymbolTypeCode,
878 code_symbols);
879 for (const SymbolContext &context : code_symbols) {
880 AddressRange addr_range;
881 context.GetAddressRange(eSymbolContextEverything, 0, false,
882 addr_range);
883 addresses.push_back(addr_range.GetBaseAddress());
884 if (log) {
885 addr_t load_addr =
886 addr_range.GetBaseAddress().GetLoadAddress(target_sp.get());
887
888 LLDB_LOGF(log, "Found a trampoline target symbol at 0x%" PRIx64 ".",
889 load_addr);
890 }
891 }
892
893 SymbolContextList reexported_symbols;
895 trampoline_name, eSymbolTypeReExported, reexported_symbols);
896 for (const SymbolContext &context : reexported_symbols) {
897 if (context.symbol) {
898 Symbol *actual_symbol =
899 context.symbol->ResolveReExportedSymbol(*target_sp.get());
900 if (actual_symbol) {
901 const Address actual_symbol_addr = actual_symbol->GetAddress();
902 if (actual_symbol_addr.IsValid()) {
903 addresses.push_back(actual_symbol_addr);
904 if (log) {
905 lldb::addr_t load_addr =
906 actual_symbol_addr.GetLoadAddress(target_sp.get());
907 LLDB_LOGF(log,
908 "Found a re-exported symbol: %s at 0x%" PRIx64 ".",
909 actual_symbol->GetName().GetCString(), load_addr);
910 }
911 }
912 }
913 }
914 }
915
916 SymbolContextList indirect_symbols;
917 images.FindSymbolsWithNameAndType(trampoline_name, eSymbolTypeResolver,
918 indirect_symbols);
919
920 for (const SymbolContext &context : indirect_symbols) {
921 AddressRange addr_range;
922 context.GetAddressRange(eSymbolContextEverything, 0, false,
923 addr_range);
924 addresses.push_back(addr_range.GetBaseAddress());
925 if (log) {
926 addr_t load_addr =
927 addr_range.GetBaseAddress().GetLoadAddress(target_sp.get());
928
929 LLDB_LOGF(log, "Found an indirect target symbol at 0x%" PRIx64 ".",
930 load_addr);
931 }
932 }
933 }
934 } else if (current_symbol->GetType() == eSymbolTypeReExported) {
935 // I am not sure we could ever end up stopped AT a re-exported symbol.
936 // But just in case:
937
938 const Symbol *actual_symbol =
939 current_symbol->ResolveReExportedSymbol(*(target_sp.get()));
940 if (actual_symbol) {
941 Address target_addr(actual_symbol->GetAddress());
942 if (target_addr.IsValid()) {
943 LLDB_LOGF(
944 log,
945 "Found a re-exported symbol: %s pointing to: %s at 0x%" PRIx64
946 ".",
947 current_symbol->GetName().GetCString(),
948 actual_symbol->GetName().GetCString(),
949 target_addr.GetLoadAddress(target_sp.get()));
950 addresses.push_back(target_addr.GetLoadAddress(target_sp.get()));
951 }
952 }
953 }
954
955 if (addresses.size() > 0) {
956 // First check whether any of the addresses point to Indirect symbols,
957 // and if they do, resolve them:
958 std::vector<lldb::addr_t> load_addrs;
959 for (Address address : addresses) {
960 Symbol *symbol = address.CalculateSymbolContextSymbol();
961 if (symbol && symbol->IsIndirect()) {
963 Address symbol_address = symbol->GetAddress();
964 addr_t resolved_addr = thread.GetProcess()->ResolveIndirectFunction(
965 &symbol_address, error);
966 if (error.Success()) {
967 load_addrs.push_back(resolved_addr);
968 LLDB_LOGF(log,
969 "ResolveIndirectFunction found resolved target for "
970 "%s at 0x%" PRIx64 ".",
971 symbol->GetName().GetCString(), resolved_addr);
972 }
973 } else {
974 load_addrs.push_back(address.GetLoadAddress(target_sp.get()));
975 }
976 }
977 thread_plan_sp = std::make_shared<ThreadPlanRunToAddress>(
978 thread, load_addrs, stop_others);
979 }
980 } else {
981 LLDB_LOGF(log, "Could not find symbol for step through.");
982 }
983
984 return thread_plan_sp;
985}
986
988 lldb_private::Symbol *original_symbol, lldb_private::ModuleList &images,
989 lldb_private::SymbolContextList &equivalent_symbols) {
990 ConstString trampoline_name =
991 original_symbol->GetMangled().GetName(Mangled::ePreferMangled);
992 if (!trampoline_name)
993 return;
994
995 static const char *resolver_name_regex = "(_gc|_non_gc|\\$[A-Za-z0-9\\$]+)$";
996 std::string equivalent_regex_buf("^");
997 equivalent_regex_buf.append(trampoline_name.GetCString());
998 equivalent_regex_buf.append(resolver_name_regex);
999
1000 RegularExpression equivalent_name_regex(equivalent_regex_buf);
1001 images.FindSymbolsMatchingRegExAndType(equivalent_name_regex, eSymbolTypeCode,
1002 equivalent_symbols);
1003
1004}
1005
1007 ModuleSP module_sp = m_libpthread_module_wp.lock();
1008 if (!module_sp) {
1009 SymbolContextList sc_list;
1010 ModuleSpec module_spec;
1011 module_spec.GetFileSpec().SetFilename("libsystem_pthread.dylib");
1012 ModuleList module_list;
1013 m_process->GetTarget().GetImages().FindModules(module_spec, module_list);
1014 if (!module_list.IsEmpty()) {
1015 if (module_list.GetSize() == 1) {
1016 module_sp = module_list.GetModuleAtIndex(0);
1017 if (module_sp)
1018 m_libpthread_module_wp = module_sp;
1019 }
1020 }
1021 }
1022 return module_sp;
1023}
1024
1027 ModuleSP module_sp = GetPThreadLibraryModule();
1028 if (module_sp) {
1030 module_sp->FindSymbolsWithNameAndType(ConstString("pthread_getspecific"),
1031 eSymbolTypeCode, sc_list);
1032 SymbolContext sc;
1033 if (sc_list.GetContextAtIndex(0, sc)) {
1034 if (sc.symbol)
1036 }
1037 }
1038 }
1040}
1041
1044 const lldb::ThreadSP thread_sp,
1045 lldb::addr_t tls_file_addr) {
1046 if (!thread_sp || !module_sp)
1047 return LLDB_INVALID_ADDRESS;
1048
1049 std::lock_guard<std::recursive_mutex> guard(m_mutex);
1050
1051 lldb_private::Address tls_addr;
1052 if (!module_sp->ResolveFileAddress(tls_file_addr, tls_addr))
1053 return LLDB_INVALID_ADDRESS;
1054
1055 Target &target = m_process->GetTarget();
1056 TypeSystemClangSP scratch_ts_sp =
1058 if (!scratch_ts_sp)
1059 return LLDB_INVALID_ADDRESS;
1060
1061 CompilerType clang_void_ptr_type =
1062 scratch_ts_sp->GetBasicType(eBasicTypeVoid).GetPointerType();
1063
1064 auto evaluate_tls_address = [this, &thread_sp, &clang_void_ptr_type](
1065 Address func_ptr,
1066 llvm::ArrayRef<addr_t> args) -> addr_t {
1068
1069 lldb::ThreadPlanSP thread_plan_sp(new ThreadPlanCallFunction(
1070 *thread_sp, func_ptr, clang_void_ptr_type, args, options));
1071
1072 DiagnosticManager execution_errors;
1073 ExecutionContext exe_ctx(thread_sp);
1075 exe_ctx, thread_plan_sp, options, execution_errors);
1076
1077 if (results == lldb::eExpressionCompleted) {
1078 if (lldb::ValueObjectSP result_valobj_sp =
1079 thread_plan_sp->GetReturnValueObject()) {
1080 return result_valobj_sp->GetValueAsUnsigned(LLDB_INVALID_ADDRESS);
1081 }
1082 }
1083 return LLDB_INVALID_ADDRESS;
1084 };
1085
1086 // On modern apple platforms, there is a small data structure that looks
1087 // approximately like this:
1088 // struct TLS_Thunk {
1089 // void *(*get_addr)(struct TLS_Thunk *);
1090 // size_t key;
1091 // size_t offset;
1092 // }
1093 //
1094 // The strategy is to take get_addr, call it with the address of the
1095 // containing TLS_Thunk structure, and add the offset to the resulting
1096 // pointer to get the data block.
1097 //
1098 // On older apple platforms, the key is treated as a pthread_key_t and passed
1099 // to pthread_getspecific. The pointer returned from that call is added to
1100 // offset to get the relevant data block.
1101
1102 const uint32_t addr_size = m_process->GetAddressByteSize();
1103 uint8_t buf[sizeof(addr_t) * 3];
1104 Status error;
1105 const size_t tls_data_size = addr_size * 3;
1106 const size_t bytes_read = target.ReadMemory(
1107 tls_addr, buf, tls_data_size, error, /*force_live_memory = */ true);
1108 if (bytes_read != tls_data_size || error.Fail())
1109 return LLDB_INVALID_ADDRESS;
1110
1111 DataExtractor data(buf, sizeof(buf), m_process->GetByteOrder(), addr_size);
1112 lldb::offset_t offset = 0;
1113 const addr_t tls_thunk = data.GetAddress(&offset);
1114 const addr_t key = data.GetAddress(&offset);
1115 const addr_t tls_offset = data.GetAddress(&offset);
1116
1117 if (tls_thunk != 0) {
1118 const addr_t fixed_tls_thunk = m_process->FixCodeAddress(tls_thunk);
1119 Address thunk_load_addr;
1120 if (target.ResolveLoadAddress(fixed_tls_thunk, thunk_load_addr)) {
1121 const addr_t tls_load_addr = tls_addr.GetLoadAddress(&target);
1122 const addr_t tls_data = evaluate_tls_address(
1123 thunk_load_addr, llvm::ArrayRef<addr_t>(tls_load_addr));
1124 if (tls_data != LLDB_INVALID_ADDRESS)
1125 return tls_data + tls_offset;
1126 }
1127 }
1128
1129 if (key != 0) {
1130 // First check to see if we have already figured out the location of
1131 // TLS data for the pthread_key on a specific thread yet. If we have we
1132 // can re-use it since its location will not change unless the process
1133 // execs.
1134 const tid_t tid = thread_sp->GetID();
1135 auto tid_pos = m_tid_to_tls_map.find(tid);
1136 if (tid_pos != m_tid_to_tls_map.end()) {
1137 auto tls_pos = tid_pos->second.find(key);
1138 if (tls_pos != tid_pos->second.end()) {
1139 return tls_pos->second + tls_offset;
1140 }
1141 }
1142 Address pthread_getspecific_addr = GetPthreadSetSpecificAddress();
1143 if (pthread_getspecific_addr.IsValid()) {
1144 const addr_t tls_data = evaluate_tls_address(pthread_getspecific_addr,
1145 llvm::ArrayRef<addr_t>(key));
1146 if (tls_data != LLDB_INVALID_ADDRESS)
1147 return tls_data + tls_offset;
1148 }
1149 }
1150 return LLDB_INVALID_ADDRESS;
1151}
1152
1155 bool use_new_spi_interface = false;
1156
1157 llvm::VersionTuple version = process->GetHostOSVersion();
1158 if (!version.empty()) {
1159 const llvm::Triple::OSType os_type =
1160 process->GetTarget().GetArchitecture().GetTriple().getOS();
1161
1162 // macOS 10.12 and newer
1163 if (os_type == llvm::Triple::MacOSX &&
1164 version >= llvm::VersionTuple(10, 12))
1165 use_new_spi_interface = true;
1166
1167 // iOS 10 and newer
1168 if (os_type == llvm::Triple::IOS && version >= llvm::VersionTuple(10))
1169 use_new_spi_interface = true;
1170
1171 // tvOS 10 and newer
1172 if (os_type == llvm::Triple::TvOS && version >= llvm::VersionTuple(10))
1173 use_new_spi_interface = true;
1174
1175 // watchOS 3 and newer
1176 if (os_type == llvm::Triple::WatchOS && version >= llvm::VersionTuple(3))
1177 use_new_spi_interface = true;
1178
1179 // NEED_BRIDGEOS_TRIPLE // Any BridgeOS
1180 // NEED_BRIDGEOS_TRIPLE if (os_type == llvm::Triple::BridgeOS)
1181 // NEED_BRIDGEOS_TRIPLE use_new_spi_interface = true;
1182 }
1183
1184 if (log) {
1185 if (use_new_spi_interface)
1186 LLDB_LOGF(
1187 log, "DynamicLoaderDarwin::UseDYLDSPI: Use new DynamicLoader plugin");
1188 else
1189 LLDB_LOGF(
1190 log, "DynamicLoaderDarwin::UseDYLDSPI: Use old DynamicLoader plugin");
1191 }
1192 return use_new_spi_interface;
1193}
static llvm::raw_ostream & error(Stream &strm)
#define DEBUG_PRINTF(fmt,...)
#define LLDB_LOG(log,...)
The LLDB_LOG* macros defined below are the way to emit log messages.
Definition: Log.h:359
#define LLDB_LOGF(log,...)
Definition: Log.h:366
A section + offset based address range class.
Definition: AddressRange.h:25
Address & GetBaseAddress()
Get accessor for the base address of the range.
Definition: AddressRange.h:209
A section + offset based address class.
Definition: Address.h:62
lldb::addr_t GetLoadAddress(Target *target) const
Get the load address.
Definition: Address.cpp:313
bool SetLoadAddress(lldb::addr_t load_addr, Target *target, bool allow_section_end=false)
Set the address to represent load_addr.
Definition: Address.cpp:1047
lldb::ModuleSP GetModule() const
Get accessor for the module for this address.
Definition: Address.cpp:285
lldb::addr_t GetOffset() const
Get the section relative offset value.
Definition: Address.h:329
bool IsValid() const
Check if the object state is valid.
Definition: Address.h:355
An architecture specification class.
Definition: ArchSpec.h:31
llvm::Triple & GetTriple()
Architecture triple accessor.
Definition: ArchSpec.h:450
bool SetTriple(const llvm::Triple &triple)
Architecture triple setter.
Definition: ArchSpec.cpp:747
void MergeFrom(const ArchSpec &other)
Merges fields from another ArchSpec into this ArchSpec.
Definition: ArchSpec.cpp:809
bool IsCompatibleMatch(const ArchSpec &rhs) const
Shorthand for IsMatch(rhs, CompatibleMatch).
Definition: ArchSpec.h:502
const char * GetArchitectureName() const
Returns a static string representing the current architecture.
Definition: ArchSpec.cpp:552
Generic representation of a type in a programming language.
Definition: CompilerType.h:36
CompilerType GetPointerType() const
Return a new CompilerType that is a pointer to this type.
A uniqued constant string class.
Definition: ConstString.h:40
const char * AsCString(const char *value_if_empty=nullptr) const
Get the string value as a C string.
Definition: ConstString.h:188
const char * GetCString() const
Get the string value as a C string.
Definition: ConstString.h:214
An data extractor class.
Definition: DataExtractor.h:48
uint64_t GetAddress(lldb::offset_t *offset_ptr) const
Extract an address from *offset_ptr.
static void ReportWarning(std::string message, std::optional< lldb::user_id_t > debugger_id=std::nullopt, std::once_flag *once=nullptr)
Report warning events.
Definition: Debugger.cpp:1587
void PutToLog(lldb_private::Log *log, lldb::addr_t slide) const
lldb::addr_t GetThreadLocalData(const lldb::ModuleSP module, const lldb::ThreadSP thread, lldb::addr_t tls_file_addr) override
Retrieves the per-module TLS block for a given thread.
void UpdateSpecialBinariesFromNewImageInfos(ImageInfo::collection &image_infos)
bool AlwaysRelyOnEHUnwindInfo(lldb_private::SymbolContext &sym_ctx) override
Ask if the eh_frame information for the given SymbolContext should be relied on even when it's the fi...
virtual bool NeedToDoInitialImageFetch()=0
ImageInfo::collection m_dyld_image_infos
virtual void DoInitialImageFetch()=0
DynamicLoaderDarwin(lldb_private::Process *process)
void UpdateDYLDImageInfoFromNewImageInfo(ImageInfo &image_info)
void PrivateProcessStateChanged(lldb_private::Process *process, lldb::StateType state)
void DidLaunch() override
Called after attaching a process.
void FindEquivalentSymbols(lldb_private::Symbol *original_symbol, lldb_private::ModuleList &module_list, lldb_private::SymbolContextList &equivalent_symbols) override
Some dynamic loaders provide features where there are a group of symbols "equivalent to" a given symb...
virtual bool SetNotificationBreakpoint()=0
bool AddModulesUsingImageInfos(ImageInfo::collection &image_infos)
void DidAttach() override
Called after attaching a process.
lldb::ThreadPlanSP GetStepThroughTrampolinePlan(lldb_private::Thread &thread, bool stop_others) override
Provides a plan to step through the dynamic loader trampoline for the current state of thread.
bool JSONImageInformationIntoImageInfo(lldb_private::StructuredData::ObjectSP image_details, ImageInfo::collection &image_infos)
bool UpdateImageLoadAddress(lldb_private::Module *module, ImageInfo &info)
lldb::ModuleSP FindTargetModuleForImageInfo(ImageInfo &image_info, bool can_create, bool *did_create_ptr)
void PrivateInitialize(lldb_private::Process *process)
lldb_private::Address GetPthreadSetSpecificAddress()
void SetDYLDModule(lldb::ModuleSP &dyld_module_sp)
static bool UseDYLDSPI(lldb_private::Process *process)
lldb_private::Address m_pthread_getspecific_addr
bool UnloadModuleSections(lldb_private::Module *module, ImageInfo &info)
void UnloadImages(const std::vector< lldb::addr_t > &solib_addresses)
virtual bool DidSetNotificationBreakpoint()=0
A plug-in interface definition class for dynamic loaders.
Definition: DynamicLoader.h:52
Process * m_process
The process that this dynamic loader plug-in is tracking.
virtual void UnloadSections(const lldb::ModuleSP module)
Removes the loaded sections from the target in module.
"lldb/Target/ExecutionContext.h" A class that contains an execution context.
size_t GetPath(char *path, size_t max_path_length, bool denormalize=true) const
Extract the full path to the file.
Definition: FileSpec.cpp:367
void SetFilename(ConstString filename)
Filename string set accessor.
Definition: FileSpec.cpp:345
llvm::sys::TimePoint GetModificationTime(const FileSpec &file_spec) const
Returns the modification time of the given file.
static FileSystem & Instance()
const AddressRange & GetAddressRange()
Definition: Function.h:447
void PutCString(const char *cstr)
Definition: Log.cpp:135
ConstString GetName(NamePreference preference=ePreferDemangled) const
Best name get accessor.
Definition: Mangled.cpp:327
A collection class for Module objects.
Definition: ModuleList.h:103
std::recursive_mutex & GetMutex() const
Definition: ModuleList.h:230
lldb::ModuleSP FindFirstModule(const ModuleSpec &module_spec) const
Definition: ModuleList.cpp:626
bool AppendIfNeeded(const lldb::ModuleSP &new_module, bool notify=true)
Append a module to the module list, if it is not already there.
Definition: ModuleList.cpp:280
void FindSymbolsWithNameAndType(ConstString name, lldb::SymbolType symbol_type, SymbolContextList &sc_list) const
Definition: ModuleList.cpp:527
void FindModules(const ModuleSpec &module_spec, ModuleList &matching_module_list) const
Finds the first module whose file specification matches file_spec.
Definition: ModuleList.cpp:543
bool Remove(const lldb::ModuleSP &module_sp, bool notify=true)
Remove a module from the module list.
Definition: ModuleList.cpp:334
lldb::ModuleSP GetModuleAtIndex(size_t idx) const
Get the module shared pointer for the module at index idx.
Definition: ModuleList.cpp:429
void Append(const lldb::ModuleSP &module_sp, bool notify=true)
Append a module to the module list.
Definition: ModuleList.cpp:247
void FindSymbolsMatchingRegExAndType(const RegularExpression &regex, lldb::SymbolType symbol_type, SymbolContextList &sc_list) const
Definition: ModuleList.cpp:535
ModuleIterable Modules() const
Definition: ModuleList.h:527
size_t GetSize() const
Gets the size of the module list.
Definition: ModuleList.cpp:638
void LogUUIDAndPaths(Log *log, const char *prefix_cstr)
Definition: ModuleList.cpp:653
void SetObjectSize(uint64_t object_size)
Definition: ModuleSpec.h:115
ConstString & GetObjectName()
Definition: ModuleSpec.h:103
FileSpec & GetFileSpec()
Definition: ModuleSpec.h:53
ArchSpec & GetArchitecture()
Definition: ModuleSpec.h:89
void SetObjectOffset(uint64_t object_offset)
Definition: ModuleSpec.h:109
A class that describes an executable image and its associated object and symbol files.
Definition: Module.h:88
virtual ObjectFile * GetObjectFile()
Get the object file representation for the current architecture.
Definition: Module.cpp:1184
virtual bool IsModuleObjCLibrary(const lldb::ModuleSP &module_sp)=0
static ObjCLanguageRuntime * Get(Process &process)
A plug-in interface definition class for object file parsers.
Definition: ObjectFile.h:44
virtual lldb::addr_t GetFileOffset() const
Returns the offset into a file at which this object resides.
Definition: ObjectFile.h:265
virtual FileSpec & GetFileSpec()
Get accessor to the object file specification.
Definition: ObjectFile.h:274
virtual SectionList * GetSectionList(bool update_module_section_list=true)
Gets the section list for the currently selected architecture (and object for archives).
Definition: ObjectFile.cpp:590
virtual lldb::addr_t GetByteSize() const
Definition: ObjectFile.h:267
A plug-in interface definition class for debugging a process.
Definition: Process.h:341
lldb::ExpressionResults RunThreadPlan(ExecutionContext &exe_ctx, lldb::ThreadPlanSP &thread_plan_sp, const EvaluateExpressionOptions &options, DiagnosticManager &diagnostic_manager)
Definition: Process.cpp:4731
void AddInvalidMemoryRegion(const LoadRange &region)
Definition: Process.cpp:5624
lldb::ByteOrder GetByteOrder() const
Definition: Process.cpp:3400
lldb::StateType GetState()
Get accessor for the current process state.
Definition: Process.cpp:1301
virtual llvm::VersionTuple GetHostOSVersion()
Sometimes the connection to a process can detect the host OS version that the process is running on.
Definition: Process.h:1267
virtual bool IsAlive()
Check if a process is still alive.
Definition: Process.cpp:1093
lldb::addr_t FixCodeAddress(lldb::addr_t pc)
Some targets might use bits in a code address to indicate a mode switch, ARM uses bit zero to signify...
Definition: Process.cpp:5741
uint32_t GetAddressByteSize() const
Definition: Process.cpp:3404
uint32_t GetStopID() const
Definition: Process.h:1476
lldb::ModuleSP ReadModuleFromMemory(const FileSpec &file_spec, lldb::addr_t header_addr, size_t size_to_read=512)
Definition: Process.cpp:2388
Target & GetTarget()
Get the target object pointer for this module.
Definition: Process.h:1277
static lldb::TypeSystemClangSP GetForTarget(Target &target, std::optional< IsolatedASTKind > ast_kind=DefaultAST, bool create_on_demand=true)
Returns the scratch TypeSystemClang for the given target.
lldb::SectionSP FindSectionByName(ConstString section_dstr) const
Definition: Section.cpp:552
lldb::offset_t GetFileOffset() const
Definition: Section.h:154
This base class provides an interface to stack frames.
Definition: StackFrame.h:43
const SymbolContext & GetSymbolContext(lldb::SymbolContextItem resolve_scope)
Provide a SymbolContext for this StackFrame's current pc value.
Definition: StackFrame.cpp:300
An error handling class.
Definition: Status.h:44
ObjectSP GetItemAtIndex(size_t idx) const
ObjectSP GetValueForKey(llvm::StringRef key) const
bool HasKey(llvm::StringRef key) const
std::shared_ptr< Object > ObjectSP
Defines a list of symbol context objects.
bool GetContextAtIndex(size_t idx, SymbolContext &sc) const
Get accessor for a symbol context at index idx.
Defines a symbol context baton that can be handed other debug core functions.
Definition: SymbolContext.h:34
Function * function
The Function for a given query.
Symbol * symbol
The Symbol for a given query.
bool IsIndirect() const
Definition: Symbol.cpp:227
Mangled & GetMangled()
Definition: Symbol.h:146
bool IsTrampoline() const
Definition: Symbol.cpp:225
Address & GetAddressRef()
Definition: Symbol.h:72
ConstString GetName() const
Definition: Symbol.cpp:552
lldb::SymbolType GetType() const
Definition: Symbol.h:168
Address GetAddress() const
Definition: Symbol.h:88
Symbol * ResolveReExportedSymbol(Target &target) const
Definition: Symbol.cpp:524
Symbol * CalculateSymbolContextSymbol() override
Definition: Symbol.cpp:455
void ModulesDidLoad(ModuleList &module_list)
Definition: Target.cpp:1690
Module * GetExecutableModulePointer()
Definition: Target.cpp:1436
void ClearAllLoadedSections()
Definition: Target.cpp:3193
bool SetSectionUnloaded(const lldb::SectionSP &section_sp)
Definition: Target.cpp:3171
lldb::ModuleSP GetOrCreateModule(const ModuleSpec &module_spec, bool notify, Status *error_ptr=nullptr)
Find a binary on the system and return its Module, or return an existing Module that is already in th...
Definition: Target.cpp:2158
size_t ReadMemory(const Address &addr, void *dst, size_t dst_len, Status &error, bool force_live_memory=false, lldb::addr_t *load_addr_ptr=nullptr)
Definition: Target.cpp:1828
bool SetArchitecture(const ArchSpec &arch_spec, bool set_platform=false, bool merge=true)
Set the architecture for this target.
Definition: Target.cpp:1538
lldb::ModuleSP GetExecutableModule()
Gets the module for the main executable.
Definition: Target.cpp:1422
bool ResolveLoadAddress(lldb::addr_t load_addr, Address &so_addr, uint32_t stop_id=SectionLoadHistory::eStopIDNow)
Definition: Target.cpp:3112
const ModuleList & GetImages() const
Get accessor for the images for this process.
Definition: Target.h:981
const ArchSpec & GetArchitecture() const
Definition: Target.h:1023
void SetExecutableModule(lldb::ModuleSP &module_sp, LoadDependentFiles load_dependent_files=eLoadDependentsDefault)
Set the main executable module.
Definition: Target.cpp:1471
bool SetSectionLoadAddress(const lldb::SectionSP &section, lldb::addr_t load_addr, bool warn_multiple=false)
Definition: Target.cpp:3122
virtual lldb::StackFrameSP GetStackFrameAtIndex(uint32_t idx)
Definition: Thread.h:405
lldb::TargetSP CalculateTarget() override
Definition: Thread.cpp:1390
lldb::ProcessSP GetProcess() const
Definition: Thread.h:154
bool IsValid() const
Definition: UUID.h:69
#define LLDB_INVALID_ADDRESS
Definition: lldb-defines.h:82
#define UINT32_MAX
Definition: lldb-defines.h:19
A class that represents a running process on the host machine.
Definition: SBAttachInfo.h:14
Log * GetLog(Cat mask)
Retrieve the Log object for the channel associated with the given log enum.
Definition: Log.h:331
const char * StateAsCString(lldb::StateType state)
Converts a StateType to a C string.
Definition: State.cpp:14
Definition: SBAddress.h:15
std::shared_ptr< lldb_private::ThreadPlan > ThreadPlanSP
Definition: lldb-forward.h:441
std::shared_ptr< lldb_private::Thread > ThreadSP
Definition: lldb-forward.h:438
std::shared_ptr< lldb_private::ValueObject > ValueObjectSP
Definition: lldb-forward.h:472
uint64_t offset_t
Definition: lldb-types.h:85
StateType
Process and Thread States.
@ eStateUnloaded
Process is object is valid, but not currently loaded.
@ eStateConnected
Process is connected to remote debug services, but not launched or attached to anything yet.
@ eStateDetached
Process has been detached and can't be examined.
@ eStateStopped
Process or thread is stopped and can be examined.
@ eStateSuspended
Process or thread is in a suspended state as far as the debugger is concerned while other processes o...
@ eStateRunning
Process or thread is running and can't be examined.
@ eStateLaunching
Process is in the process of launching.
@ eStateAttaching
Process is currently trying to attach.
@ eStateExited
Process has exited and can't be examined.
@ eStateStepping
Process or thread is in the process of stepping and can not be examined.
@ eStateCrashed
Process or thread has crashed and can be examined.
ExpressionResults
The results of expression evaluation.
@ eExpressionCompleted
@ eSymbolTypeReExported
@ eSymbolTypeResolver
std::shared_ptr< lldb_private::TypeSystemClang > TypeSystemClangSP
Definition: lldb-forward.h:458
std::shared_ptr< lldb_private::Section > SectionSP
Definition: lldb-forward.h:406
uint64_t addr_t
Definition: lldb-types.h:81
std::shared_ptr< lldb_private::Target > TargetSP
Definition: lldb-forward.h:436
uint64_t tid_t
Definition: lldb-types.h:84
std::shared_ptr< lldb_private::Module > ModuleSP
Definition: lldb-forward.h:365
lldb_private::UUID uuid
UUID for this dylib if it has one, else all zeros.
lldb::addr_t address
Address of mach header for this dylib.
lldb::addr_t slide
The amount to slide all segments by if there is a global slide.
llvm::MachO::mach_header header
The mach header for this image.
std::vector< Segment > segments
All segment vmaddr and vmsize pairs for this executable (from memory of inferior).
const Segment * FindSegment(lldb_private::ConstString name) const
lldb_private::FileSpec file_spec
Resolved path for this dylib.
uint32_t load_stop_id
The process stop ID that the sections for this image were loaded.
void PutToLog(lldb_private::Log *log) const