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NativeProcessFreeBSD.cpp
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1 //===-- NativeProcessFreeBSD.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 
9 #include "NativeProcessFreeBSD.h"
10 
11 // clang-format off
12 #include <sys/types.h>
13 #include <sys/ptrace.h>
14 #include <sys/sysctl.h>
15 #include <sys/user.h>
16 #include <sys/wait.h>
17 #include <machine/elf.h>
18 // clang-format on
19 
21 #include "lldb/Host/HostProcess.h"
23 #include "lldb/Target/Process.h"
24 #include "lldb/Utility/State.h"
25 #include "llvm/Support/Errno.h"
26 
27 using namespace lldb;
28 using namespace lldb_private;
29 using namespace lldb_private::process_freebsd;
30 using namespace llvm;
31 
32 // Simple helper function to ensure flags are enabled on the given file
33 // descriptor.
34 static Status EnsureFDFlags(int fd, int flags) {
35  Status error;
36 
37  int status = fcntl(fd, F_GETFL);
38  if (status == -1) {
39  error.SetErrorToErrno();
40  return error;
41  }
42 
43  if (fcntl(fd, F_SETFL, status | flags) == -1) {
44  error.SetErrorToErrno();
45  return error;
46  }
47 
48  return error;
49 }
50 
51 // Public Static Methods
52 
53 llvm::Expected<std::unique_ptr<NativeProcessProtocol>>
54 NativeProcessFreeBSD::Factory::Launch(ProcessLaunchInfo &launch_info,
55  NativeDelegate &native_delegate,
56  MainLoop &mainloop) const {
58 
59  Status status;
61  .LaunchProcess(launch_info, status)
62  .GetProcessId();
63  LLDB_LOG(log, "pid = {0:x}", pid);
64  if (status.Fail()) {
65  LLDB_LOG(log, "failed to launch process: {0}", status);
66  return status.ToError();
67  }
68 
69  // Wait for the child process to trap on its call to execve.
70  int wstatus;
71  ::pid_t wpid = llvm::sys::RetryAfterSignal(-1, ::waitpid, pid, &wstatus, 0);
72  assert(wpid == pid);
73  (void)wpid;
74  if (!WIFSTOPPED(wstatus)) {
75  LLDB_LOG(log, "Could not sync with inferior process: wstatus={1}",
76  WaitStatus::Decode(wstatus));
77  return llvm::make_error<StringError>("Could not sync with inferior process",
78  llvm::inconvertibleErrorCode());
79  }
80  LLDB_LOG(log, "inferior started, now in stopped state");
81 
83  if (!Host::GetProcessInfo(pid, Info)) {
84  return llvm::make_error<StringError>("Cannot get process architecture",
85  llvm::inconvertibleErrorCode());
86  }
87 
88  // Set the architecture to the exe architecture.
89  LLDB_LOG(log, "pid = {0:x}, detected architecture {1}", pid,
90  Info.GetArchitecture().GetArchitectureName());
91 
92  std::unique_ptr<NativeProcessFreeBSD> process_up(new NativeProcessFreeBSD(
93  pid, launch_info.GetPTY().ReleasePrimaryFileDescriptor(), native_delegate,
94  Info.GetArchitecture(), mainloop));
95 
96  status = process_up->SetupTrace();
97  if (status.Fail())
98  return status.ToError();
99 
100  for (const auto &thread : process_up->m_threads)
101  static_cast<NativeThreadFreeBSD &>(*thread).SetStoppedBySignal(SIGSTOP);
102  process_up->SetState(StateType::eStateStopped, false);
103 
104  return std::move(process_up);
105 }
106 
107 llvm::Expected<std::unique_ptr<NativeProcessProtocol>>
108 NativeProcessFreeBSD::Factory::Attach(
110  MainLoop &mainloop) const {
112  LLDB_LOG(log, "pid = {0:x}", pid);
113 
114  // Retrieve the architecture for the running process.
115  ProcessInstanceInfo Info;
116  if (!Host::GetProcessInfo(pid, Info)) {
117  return llvm::make_error<StringError>("Cannot get process architecture",
118  llvm::inconvertibleErrorCode());
119  }
120 
121  std::unique_ptr<NativeProcessFreeBSD> process_up(new NativeProcessFreeBSD(
122  pid, -1, native_delegate, Info.GetArchitecture(), mainloop));
123 
124  Status status = process_up->Attach();
125  if (!status.Success())
126  return status.ToError();
127 
128  return std::move(process_up);
129 }
130 
132 NativeProcessFreeBSD::Factory::GetSupportedExtensions() const {
133  return
134 #if defined(PT_COREDUMP)
135  Extension::savecore |
136 #endif
137  Extension::multiprocess | Extension::fork | Extension::vfork |
138  Extension::pass_signals | Extension::auxv | Extension::libraries_svr4 |
139  Extension::siginfo_read;
140 }
141 
142 // Public Instance Methods
143 
144 NativeProcessFreeBSD::NativeProcessFreeBSD(::pid_t pid, int terminal_fd,
145  NativeDelegate &delegate,
146  const ArchSpec &arch,
147  MainLoop &mainloop)
148  : NativeProcessELF(pid, terminal_fd, delegate), m_arch(arch),
149  m_main_loop(mainloop) {
150  if (m_terminal_fd != -1) {
152  assert(status.Success());
153  }
154 
155  Status status;
156  m_sigchld_handle = mainloop.RegisterSignal(
157  SIGCHLD, [this](MainLoopBase &) { SigchldHandler(); }, status);
158  assert(m_sigchld_handle && status.Success());
159 }
160 
161 // Handles all waitpid events from the inferior process.
163  switch (signal) {
164  case SIGTRAP:
165  return MonitorSIGTRAP(pid);
166  case SIGSTOP:
167  return MonitorSIGSTOP(pid);
168  default:
169  return MonitorSignal(pid, signal);
170  }
171 }
172 
175 
176  LLDB_LOG(log, "got exit signal({0}) , pid = {1}", status, pid);
177 
178  /* Stop Tracking All Threads attached to Process */
179  m_threads.clear();
180 
181  SetExitStatus(status, true);
182 
183  // Notify delegate that our process has exited.
185 }
186 
188  /* Stop all Threads attached to Process */
189  for (const auto &thread : m_threads) {
190  static_cast<NativeThreadFreeBSD &>(*thread).SetStoppedBySignal(SIGSTOP,
191  nullptr);
192  }
194 }
195 
198  struct ptrace_lwpinfo info;
199 
200  const auto siginfo_err = PtraceWrapper(PT_LWPINFO, pid, &info, sizeof(info));
201  if (siginfo_err.Fail()) {
202  LLDB_LOG(log, "PT_LWPINFO failed {0}", siginfo_err);
203  return;
204  }
205  assert(info.pl_event == PL_EVENT_SIGNAL);
206 
207  LLDB_LOG(log, "got SIGTRAP, pid = {0}, lwpid = {1}, flags = {2:x}", pid,
208  info.pl_lwpid, info.pl_flags);
209  NativeThreadFreeBSD *thread = nullptr;
210 
211  if (info.pl_flags & (PL_FLAG_BORN | PL_FLAG_EXITED)) {
212  if (info.pl_flags & PL_FLAG_BORN) {
213  LLDB_LOG(log, "monitoring new thread, tid = {0}", info.pl_lwpid);
214  NativeThreadFreeBSD &t = AddThread(info.pl_lwpid);
215 
216  // Technically, the FreeBSD kernel copies the debug registers to new
217  // threads. However, there is a non-negligible delay between acquiring
218  // the DR values and reporting the new thread during which the user may
219  // establish a new watchpoint. In order to ensure that watchpoints
220  // established during this period are propagated to new threads,
221  // explicitly copy the DR value at the time the new thread is reported.
222  //
223  // See also: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=250954
224 
226  static_cast<NativeThreadFreeBSD &>(*GetCurrentThread()));
227  if (error) {
228  LLDB_LOG_ERROR(log, std::move(error),
229  "failed to copy watchpoints to new thread {1}: {0}",
230  info.pl_lwpid);
232  return;
233  }
234  } else /*if (info.pl_flags & PL_FLAG_EXITED)*/ {
235  LLDB_LOG(log, "thread exited, tid = {0}", info.pl_lwpid);
236  RemoveThread(info.pl_lwpid);
237  }
238 
239  Status error =
240  PtraceWrapper(PT_CONTINUE, pid, reinterpret_cast<void *>(1), 0);
241  if (error.Fail())
243  return;
244  }
245 
246  if (info.pl_flags & PL_FLAG_EXEC) {
248  if (error.Fail()) {
250  return;
251  }
252 
253  // Let our delegate know we have just exec'd.
254  NotifyDidExec();
255 
256  for (const auto &thread : m_threads)
257  static_cast<NativeThreadFreeBSD &>(*thread).SetStoppedByExec();
258  SetCurrentThreadID(m_threads.front()->GetID());
260  return;
261  }
262 
263  if (info.pl_lwpid > 0) {
264  for (const auto &t : m_threads) {
265  if (t->GetID() == static_cast<lldb::tid_t>(info.pl_lwpid))
266  thread = static_cast<NativeThreadFreeBSD *>(t.get());
267  static_cast<NativeThreadFreeBSD *>(t.get())->SetStoppedWithNoReason();
268  }
269  if (!thread)
270  LLDB_LOG(log, "thread not found in m_threads, pid = {0}, LWP = {1}", pid,
271  info.pl_lwpid);
272  }
273 
274  if (info.pl_flags & PL_FLAG_FORKED) {
275  assert(thread);
276  MonitorClone(info.pl_child_pid, info.pl_flags & PL_FLAG_VFORKED, *thread);
277  return;
278  }
279 
280  if (info.pl_flags & PL_FLAG_VFORK_DONE) {
281  assert(thread);
283  thread->SetStoppedByVForkDone();
285  } else {
286  Status error =
287  PtraceWrapper(PT_CONTINUE, pid, reinterpret_cast<void *>(1), 0);
288  if (error.Fail())
290  }
291  return;
292  }
293 
294  if (info.pl_flags & PL_FLAG_SI) {
295  assert(info.pl_siginfo.si_signo == SIGTRAP);
296  LLDB_LOG(log, "SIGTRAP siginfo: si_code = {0}, pid = {1}",
297  info.pl_siginfo.si_code, info.pl_siginfo.si_pid);
298 
299  switch (info.pl_siginfo.si_code) {
300  case TRAP_BRKPT:
301  LLDB_LOG(log, "SIGTRAP/TRAP_BRKPT: si_addr: {0}",
302  info.pl_siginfo.si_addr);
303 
304  if (thread) {
305  auto thread_info =
307  if (thread_info != m_threads_stepping_with_breakpoint.end()) {
308  thread->SetStoppedByTrace();
309  Status brkpt_error = RemoveBreakpoint(thread_info->second);
310  if (brkpt_error.Fail())
311  LLDB_LOG(log, "pid = {0} remove stepping breakpoint: {1}",
312  thread_info->first, brkpt_error);
313  m_threads_stepping_with_breakpoint.erase(thread_info);
314  } else
315  thread->SetStoppedByBreakpoint();
316  FixupBreakpointPCAsNeeded(*thread);
317  SetCurrentThreadID(thread->GetID());
318  }
320  return;
321  case TRAP_TRACE:
322  LLDB_LOG(log, "SIGTRAP/TRAP_TRACE: si_addr: {0}",
323  info.pl_siginfo.si_addr);
324 
325  if (thread) {
326  auto &regctx = static_cast<NativeRegisterContextFreeBSD &>(
327  thread->GetRegisterContext());
328  uint32_t wp_index = LLDB_INVALID_INDEX32;
329  Status error = regctx.GetWatchpointHitIndex(
330  wp_index, reinterpret_cast<uintptr_t>(info.pl_siginfo.si_addr));
331  if (error.Fail())
332  LLDB_LOG(log,
333  "received error while checking for watchpoint hits, pid = "
334  "{0}, LWP = {1}, error = {2}",
335  pid, info.pl_lwpid, error);
336  if (wp_index != LLDB_INVALID_INDEX32) {
337  regctx.ClearWatchpointHit(wp_index);
338  thread->SetStoppedByWatchpoint(wp_index);
339  SetCurrentThreadID(thread->GetID());
341  break;
342  }
343 
344  thread->SetStoppedByTrace();
345  SetCurrentThreadID(thread->GetID());
346  }
347 
349  return;
350  }
351  }
352 
353  // Either user-generated SIGTRAP or an unknown event that would
354  // otherwise leave the debugger hanging.
355  LLDB_LOG(log, "unknown SIGTRAP, passing to generic handler");
356  MonitorSignal(pid, SIGTRAP);
357 }
358 
361  struct ptrace_lwpinfo info;
362 
363  const auto siginfo_err = PtraceWrapper(PT_LWPINFO, pid, &info, sizeof(info));
364  if (siginfo_err.Fail()) {
365  LLDB_LOG(log, "PT_LWPINFO failed {0}", siginfo_err);
366  return;
367  }
368  assert(info.pl_event == PL_EVENT_SIGNAL);
369  // TODO: do we need to handle !PL_FLAG_SI?
370  assert(info.pl_flags & PL_FLAG_SI);
371  assert(info.pl_siginfo.si_signo == signal);
372 
373  for (const auto &abs_thread : m_threads) {
374  NativeThreadFreeBSD &thread =
375  static_cast<NativeThreadFreeBSD &>(*abs_thread);
376  assert(info.pl_lwpid >= 0);
377  if (info.pl_lwpid == 0 ||
378  static_cast<lldb::tid_t>(info.pl_lwpid) == thread.GetID()) {
379  thread.SetStoppedBySignal(info.pl_siginfo.si_signo, &info.pl_siginfo);
380  SetCurrentThreadID(thread.GetID());
381  } else
382  thread.SetStoppedWithNoReason();
383  }
385 }
386 
388  int data, int *result) {
390  Status error;
391  int ret;
392 
393  errno = 0;
394  ret =
395  ptrace(req, static_cast<::pid_t>(pid), static_cast<caddr_t>(addr), data);
396 
397  if (ret == -1)
398  error.SetErrorToErrno();
399 
400  if (result)
401  *result = ret;
402 
403  LLDB_LOG(log, "ptrace({0}, {1}, {2}, {3})={4:x}", req, pid, addr, data, ret);
404 
405  if (error.Fail())
406  LLDB_LOG(log, "ptrace() failed: {0}", error);
407 
408  return error;
409 }
410 
411 llvm::Expected<llvm::ArrayRef<uint8_t>>
413  static const uint8_t g_arm_opcode[] = {0xfe, 0xde, 0xff, 0xe7};
414  static const uint8_t g_thumb_opcode[] = {0x01, 0xde};
415 
416  switch (GetArchitecture().GetMachine()) {
417  case llvm::Triple::arm:
418  switch (size_hint) {
419  case 2:
420  return llvm::makeArrayRef(g_thumb_opcode);
421  case 4:
422  return llvm::makeArrayRef(g_arm_opcode);
423  default:
424  return llvm::createStringError(llvm::inconvertibleErrorCode(),
425  "Unrecognised trap opcode size hint!");
426  }
427  default:
429  }
430 }
431 
434  LLDB_LOG(log, "pid {0}", GetID());
435 
436  Status ret;
437 
438  int signal = 0;
439  for (const auto &abs_thread : m_threads) {
440  assert(abs_thread && "thread list should not contain NULL threads");
441  NativeThreadFreeBSD &thread =
442  static_cast<NativeThreadFreeBSD &>(*abs_thread);
443 
444  const ResumeAction *action =
445  resume_actions.GetActionForThread(thread.GetID(), true);
446  // we need to explicit issue suspend requests, so it is simpler to map it
447  // into proper action
448  ResumeAction suspend_action{thread.GetID(), eStateSuspended,
450 
451  if (action == nullptr) {
452  LLDB_LOG(log, "no action specified for pid {0} tid {1}", GetID(),
453  thread.GetID());
454  action = &suspend_action;
455  }
456 
457  LLDB_LOG(
458  log,
459  "processing resume action state {0} signal {1} for pid {2} tid {3}",
460  action->state, action->signal, GetID(), thread.GetID());
461 
462  switch (action->state) {
463  case eStateRunning:
464  ret = thread.Resume();
465  break;
466  case eStateStepping:
467  ret = thread.SingleStep();
468  break;
469  case eStateSuspended:
470  case eStateStopped:
471  if (action->signal != LLDB_INVALID_SIGNAL_NUMBER)
472  return Status("Passing signal to suspended thread unsupported");
473 
474  ret = thread.Suspend();
475  break;
476 
477  default:
478  return Status(
479  "NativeProcessFreeBSD::%s (): unexpected state %s specified "
480  "for pid %" PRIu64 ", tid %" PRIu64,
481  __FUNCTION__, StateAsCString(action->state), GetID(), thread.GetID());
482  }
483 
484  if (!ret.Success())
485  return ret;
486  if (action->signal != LLDB_INVALID_SIGNAL_NUMBER)
487  signal = action->signal;
488  }
489 
490  ret =
491  PtraceWrapper(PT_CONTINUE, GetID(), reinterpret_cast<void *>(1), signal);
492  if (ret.Success())
493  SetState(eStateRunning, true);
494  return ret;
495 }
496 
498  Status error;
499 
500  if (kill(GetID(), SIGSTOP) != 0)
501  error.SetErrorToErrno();
502  return error;
503 }
504 
506  Status error;
507 
508  // Stop monitoring the inferior.
509  m_sigchld_handle.reset();
510 
511  // Tell ptrace to detach from the process.
513  return error;
514 
515  return PtraceWrapper(PT_DETACH, GetID());
516 }
517 
519  Status error;
520 
521  if (kill(GetID(), signo))
522  error.SetErrorToErrno();
523 
524  return error;
525 }
526 
528 
531  LLDB_LOG(log, "pid {0}", GetID());
532 
533  Status error;
534 
535  switch (m_state) {
541  // Nothing to do - the process is already dead.
542  LLDB_LOG(log, "ignored for PID {0} due to current state: {1}", GetID(),
544  return error;
545 
553  // We can try to kill a process in these states.
554  break;
555  }
556 
557  return PtraceWrapper(PT_KILL, m_pid);
558 }
559 
561  MemoryRegionInfo &range_info) {
562 
564  // We're done.
565  return Status("unsupported");
566  }
567 
569  if (error.Fail()) {
570  return error;
571  }
572 
573  lldb::addr_t prev_base_address = 0;
574  // FIXME start by finding the last region that is <= target address using
575  // binary search. Data is sorted.
576  // There can be a ton of regions on pthreads apps with lots of threads.
577  for (auto it = m_mem_region_cache.begin(); it != m_mem_region_cache.end();
578  ++it) {
579  MemoryRegionInfo &proc_entry_info = it->first;
580  // Sanity check assumption that memory map entries are ascending.
581  assert((proc_entry_info.GetRange().GetRangeBase() >= prev_base_address) &&
582  "descending memory map entries detected, unexpected");
583  prev_base_address = proc_entry_info.GetRange().GetRangeBase();
584  UNUSED_IF_ASSERT_DISABLED(prev_base_address);
585  // If the target address comes before this entry, indicate distance to next
586  // region.
587  if (load_addr < proc_entry_info.GetRange().GetRangeBase()) {
588  range_info.GetRange().SetRangeBase(load_addr);
589  range_info.GetRange().SetByteSize(
590  proc_entry_info.GetRange().GetRangeBase() - load_addr);
591  range_info.SetReadable(MemoryRegionInfo::OptionalBool::eNo);
592  range_info.SetWritable(MemoryRegionInfo::OptionalBool::eNo);
593  range_info.SetExecutable(MemoryRegionInfo::OptionalBool::eNo);
594  range_info.SetMapped(MemoryRegionInfo::OptionalBool::eNo);
595  return error;
596  } else if (proc_entry_info.GetRange().Contains(load_addr)) {
597  // The target address is within the memory region we're processing here.
598  range_info = proc_entry_info;
599  return error;
600  }
601  // The target memory address comes somewhere after the region we just
602  // parsed.
603  }
604  // If we made it here, we didn't find an entry that contained the given
605  // address. Return the load_addr as start and the amount of bytes betwwen
606  // load address and the end of the memory as size.
607  range_info.GetRange().SetRangeBase(load_addr);
609  range_info.SetReadable(MemoryRegionInfo::OptionalBool::eNo);
610  range_info.SetWritable(MemoryRegionInfo::OptionalBool::eNo);
611  range_info.SetExecutable(MemoryRegionInfo::OptionalBool::eNo);
612  range_info.SetMapped(MemoryRegionInfo::OptionalBool::eNo);
613  return error;
614 }
615 
618  // If our cache is empty, pull the latest. There should always be at least
619  // one memory region if memory region handling is supported.
620  if (!m_mem_region_cache.empty()) {
621  LLDB_LOG(log, "reusing {0} cached memory region entries",
622  m_mem_region_cache.size());
623  return Status();
624  }
625 
626  int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_VMMAP, static_cast<int>(m_pid)};
627  int ret;
628  size_t len;
629 
630  ret = ::sysctl(mib, 4, nullptr, &len, nullptr, 0);
631  if (ret != 0) {
633  return Status("sysctl() for KERN_PROC_VMMAP failed");
634  }
635 
636  std::unique_ptr<WritableMemoryBuffer> buf =
637  llvm::WritableMemoryBuffer::getNewMemBuffer(len);
638  ret = ::sysctl(mib, 4, buf->getBufferStart(), &len, nullptr, 0);
639  if (ret != 0) {
641  return Status("sysctl() for KERN_PROC_VMMAP failed");
642  }
643 
644  char *bp = buf->getBufferStart();
645  char *end = bp + len;
646  while (bp < end) {
647  auto *kv = reinterpret_cast<struct kinfo_vmentry *>(bp);
648  if (kv->kve_structsize == 0)
649  break;
650  bp += kv->kve_structsize;
651 
652  MemoryRegionInfo info;
653  info.Clear();
654  info.GetRange().SetRangeBase(kv->kve_start);
655  info.GetRange().SetRangeEnd(kv->kve_end);
656  info.SetMapped(MemoryRegionInfo::OptionalBool::eYes);
657 
658  if (kv->kve_protection & VM_PROT_READ)
659  info.SetReadable(MemoryRegionInfo::OptionalBool::eYes);
660  else
661  info.SetReadable(MemoryRegionInfo::OptionalBool::eNo);
662 
663  if (kv->kve_protection & VM_PROT_WRITE)
664  info.SetWritable(MemoryRegionInfo::OptionalBool::eYes);
665  else
666  info.SetWritable(MemoryRegionInfo::OptionalBool::eNo);
667 
668  if (kv->kve_protection & VM_PROT_EXECUTE)
669  info.SetExecutable(MemoryRegionInfo::OptionalBool::eYes);
670  else
671  info.SetExecutable(MemoryRegionInfo::OptionalBool::eNo);
672 
673  if (kv->kve_path[0])
674  info.SetName(kv->kve_path);
675 
676  m_mem_region_cache.emplace_back(info,
677  FileSpec(info.GetName().GetCString()));
678  }
679 
680  if (m_mem_region_cache.empty()) {
681  // No entries after attempting to read them. This shouldn't happen. Assume
682  // we don't support map entries.
683  LLDB_LOG(log, "failed to find any vmmap entries, assuming no support "
684  "for memory region metadata retrieval");
686  return Status("not supported");
687  }
688  LLDB_LOG(log, "read {0} memory region entries from process {1}",
689  m_mem_region_cache.size(), GetID());
690  // We support memory retrieval, remember that.
692 
693  return Status();
694 }
695 
697 
699  bool hardware) {
700  if (hardware)
701  return SetHardwareBreakpoint(addr, size);
702  return SetSoftwareBreakpoint(addr, size);
703 }
704 
706  FileSpec &file_spec) {
708  if (error.Fail())
709  return error;
710 
711  FileSpec module_file_spec(module_path);
712  FileSystem::Instance().Resolve(module_file_spec);
713 
714  file_spec.Clear();
715  for (const auto &it : m_mem_region_cache) {
716  if (it.second.GetFilename() == module_file_spec.GetFilename()) {
717  file_spec = it.second;
718  return Status();
719  }
720  }
721  return Status("Module file (%s) not found in process' memory map!",
722  module_file_spec.GetFilename().AsCString());
723 }
724 
725 Status
726 NativeProcessFreeBSD::GetFileLoadAddress(const llvm::StringRef &file_name,
727  lldb::addr_t &load_addr) {
728  load_addr = LLDB_INVALID_ADDRESS;
730  if (error.Fail())
731  return error;
732 
733  FileSpec file(file_name);
734  for (const auto &it : m_mem_region_cache) {
735  if (it.second == file) {
736  load_addr = it.first.GetRange().GetRangeBase();
737  return Status();
738  }
739  }
740  return Status("No load address found for file %s.", file_name.str().c_str());
741 }
742 
745  int status;
746  ::pid_t wait_pid =
747  llvm::sys::RetryAfterSignal(-1, waitpid, GetID(), &status, WNOHANG);
748 
749  if (wait_pid == 0)
750  return;
751 
752  if (wait_pid == -1) {
753  Status error(errno, eErrorTypePOSIX);
754  LLDB_LOG(log, "waitpid ({0}, &status, _) failed: {1}", GetID(), error);
755  return;
756  }
757 
758  WaitStatus wait_status = WaitStatus::Decode(status);
759  bool exited = wait_status.type == WaitStatus::Exit ||
760  (wait_status.type == WaitStatus::Signal &&
761  wait_pid == static_cast<::pid_t>(GetID()));
762 
763  LLDB_LOG(log,
764  "waitpid ({0}, &status, _) => pid = {1}, status = {2}, exited = {3}",
765  GetID(), wait_pid, status, exited);
766 
767  if (exited)
768  MonitorExited(wait_pid, wait_status);
769  else {
770  assert(wait_status.type == WaitStatus::Stop);
771  MonitorCallback(wait_pid, wait_status.status);
772  }
773 }
774 
776  for (const auto &thread : m_threads) {
777  assert(thread && "thread list should not contain NULL threads");
778  if (thread->GetID() == thread_id) {
779  // We have this thread.
780  return true;
781  }
782  }
783 
784  // We don't have this thread.
785  return false;
786 }
787 
790  LLDB_LOG(log, "pid {0} adding thread with tid {1}", GetID(), thread_id);
791 
792  assert(thread_id > 0);
793  assert(!HasThreadNoLock(thread_id) &&
794  "attempted to add a thread by id that already exists");
795 
796  // If this is the first thread, save it as the current thread
797  if (m_threads.empty())
798  SetCurrentThreadID(thread_id);
799 
800  m_threads.push_back(std::make_unique<NativeThreadFreeBSD>(*this, thread_id));
801  return static_cast<NativeThreadFreeBSD &>(*m_threads.back());
802 }
803 
806  LLDB_LOG(log, "pid {0} removing thread with tid {1}", GetID(), thread_id);
807 
808  assert(thread_id > 0);
809  assert(HasThreadNoLock(thread_id) &&
810  "attempted to remove a thread that does not exist");
811 
812  for (auto it = m_threads.begin(); it != m_threads.end(); ++it) {
813  if ((*it)->GetID() == thread_id) {
814  m_threads.erase(it);
815  break;
816  }
817  }
818 
819  if (GetCurrentThreadID() == thread_id)
820  SetCurrentThreadID(m_threads.front()->GetID());
821 }
822 
824  // Attach to the requested process.
825  // An attach will cause the thread to stop with a SIGSTOP.
826  Status status = PtraceWrapper(PT_ATTACH, m_pid);
827  if (status.Fail())
828  return status;
829 
830  int wstatus;
831  // Need to use WALLSIG otherwise we receive an error with errno=ECHLD At this
832  // point we should have a thread stopped if waitpid succeeds.
833  if ((wstatus = llvm::sys::RetryAfterSignal(-1, waitpid, m_pid, nullptr, 0)) <
834  0)
835  return Status(errno, eErrorTypePOSIX);
836 
837  // Initialize threads and tracing status
838  // NB: this needs to be called before we set thread state
839  status = SetupTrace();
840  if (status.Fail())
841  return status;
842 
843  for (const auto &thread : m_threads)
844  static_cast<NativeThreadFreeBSD &>(*thread).SetStoppedBySignal(SIGSTOP);
845 
846  // Let our process instance know the thread has stopped.
847  SetCurrentThreadID(m_threads.front()->GetID());
849  return Status();
850 }
851 
853  size_t size, size_t &bytes_read) {
854  unsigned char *dst = static_cast<unsigned char *>(buf);
855  struct ptrace_io_desc io;
856 
858  LLDB_LOG(log, "addr = {0}, buf = {1}, size = {2}", addr, buf, size);
859 
860  bytes_read = 0;
861  io.piod_op = PIOD_READ_D;
862  io.piod_len = size;
863 
864  do {
865  io.piod_offs = (void *)(addr + bytes_read);
866  io.piod_addr = dst + bytes_read;
867 
869  if (error.Fail() || io.piod_len == 0)
870  return error;
871 
872  bytes_read += io.piod_len;
873  io.piod_len = size - bytes_read;
874  } while (bytes_read < size);
875 
876  return Status();
877 }
878 
880  size_t size, size_t &bytes_written) {
881  const unsigned char *src = static_cast<const unsigned char *>(buf);
882  Status error;
883  struct ptrace_io_desc io;
884 
886  LLDB_LOG(log, "addr = {0}, buf = {1}, size = {2}", addr, buf, size);
887 
888  bytes_written = 0;
889  io.piod_op = PIOD_WRITE_D;
890  io.piod_len = size;
891 
892  do {
893  io.piod_addr =
894  const_cast<void *>(static_cast<const void *>(src + bytes_written));
895  io.piod_offs = (void *)(addr + bytes_written);
896 
898  if (error.Fail() || io.piod_len == 0)
899  return error;
900 
901  bytes_written += io.piod_len;
902  io.piod_len = size - bytes_written;
903  } while (bytes_written < size);
904 
905  return error;
906 }
907 
908 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>>
910  int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_AUXV, static_cast<int>(GetID())};
911  size_t auxv_size = AT_COUNT * sizeof(Elf_Auxinfo);
912  std::unique_ptr<WritableMemoryBuffer> buf =
913  llvm::WritableMemoryBuffer::getNewMemBuffer(auxv_size);
914 
915  if (::sysctl(mib, 4, buf->getBufferStart(), &auxv_size, nullptr, 0) != 0)
916  return std::error_code(errno, std::generic_category());
917 
918  return buf;
919 }
920 
922  // Enable event reporting
923  int events;
924  Status status =
925  PtraceWrapper(PT_GET_EVENT_MASK, GetID(), &events, sizeof(events));
926  if (status.Fail())
927  return status;
928  events |= PTRACE_LWP | PTRACE_FORK | PTRACE_VFORK;
929  status = PtraceWrapper(PT_SET_EVENT_MASK, GetID(), &events, sizeof(events));
930  if (status.Fail())
931  return status;
932 
933  return ReinitializeThreads();
934 }
935 
937  // Clear old threads
938  m_threads.clear();
939 
940  int num_lwps;
941  Status error = PtraceWrapper(PT_GETNUMLWPS, GetID(), nullptr, 0, &num_lwps);
942  if (error.Fail())
943  return error;
944 
945  std::vector<lwpid_t> lwp_ids;
946  lwp_ids.resize(num_lwps);
947  error = PtraceWrapper(PT_GETLWPLIST, GetID(), lwp_ids.data(),
948  lwp_ids.size() * sizeof(lwpid_t), &num_lwps);
949  if (error.Fail())
950  return error;
951 
952  // Reinitialize from scratch threads and register them in process
953  for (lwpid_t lwp : lwp_ids)
954  AddThread(lwp);
955 
956  return error;
957 }
958 
960  return !m_arch.IsMIPS();
961 }
962 
963 void NativeProcessFreeBSD::MonitorClone(::pid_t child_pid, bool is_vfork,
964  NativeThreadFreeBSD &parent_thread) {
966  LLDB_LOG(log, "fork, child_pid={0}", child_pid);
967 
968  int status;
969  ::pid_t wait_pid =
970  llvm::sys::RetryAfterSignal(-1, ::waitpid, child_pid, &status, 0);
971  if (wait_pid != child_pid) {
972  LLDB_LOG(log,
973  "waiting for pid {0} failed. Assuming the pid has "
974  "disappeared in the meantime",
975  child_pid);
976  return;
977  }
978  if (WIFEXITED(status)) {
979  LLDB_LOG(log,
980  "waiting for pid {0} returned an 'exited' event. Not "
981  "tracking it.",
982  child_pid);
983  return;
984  }
985 
986  struct ptrace_lwpinfo info;
987  const auto siginfo_err = PtraceWrapper(PT_LWPINFO, child_pid, &info, sizeof(info));
988  if (siginfo_err.Fail()) {
989  LLDB_LOG(log, "PT_LWPINFO failed {0}", siginfo_err);
990  return;
991  }
992  assert(info.pl_event == PL_EVENT_SIGNAL);
993  lldb::tid_t child_tid = info.pl_lwpid;
994 
995  std::unique_ptr<NativeProcessFreeBSD> child_process{
996  new NativeProcessFreeBSD(static_cast<::pid_t>(child_pid), m_terminal_fd,
998  if (!is_vfork)
999  child_process->m_software_breakpoints = m_software_breakpoints;
1000 
1001  Extension expected_ext = is_vfork ? Extension::vfork : Extension::fork;
1002  if ((m_enabled_extensions & expected_ext) == expected_ext) {
1003  child_process->SetupTrace();
1004  for (const auto &thread : child_process->m_threads)
1005  static_cast<NativeThreadFreeBSD &>(*thread).SetStoppedBySignal(SIGSTOP);
1006  child_process->SetState(StateType::eStateStopped, false);
1007 
1008  m_delegate.NewSubprocess(this, std::move(child_process));
1009  if (is_vfork)
1010  parent_thread.SetStoppedByVFork(child_pid, child_tid);
1011  else
1012  parent_thread.SetStoppedByFork(child_pid, child_tid);
1014  } else {
1015  child_process->Detach();
1016  Status pt_error =
1017  PtraceWrapper(PT_CONTINUE, GetID(), reinterpret_cast<void *>(1), 0);
1018  if (pt_error.Fail()) {
1019  LLDB_LOG_ERROR(log, pt_error.ToError(),
1020  "unable to resume parent process {1}: {0}", GetID());
1022  }
1023  }
1024 }
1025 
1026 llvm::Expected<std::string>
1027 NativeProcessFreeBSD::SaveCore(llvm::StringRef path_hint) {
1028 #if defined(PT_COREDUMP)
1029  using namespace llvm::sys::fs;
1030 
1031  llvm::SmallString<128> path{path_hint};
1032  Status error;
1033  struct ptrace_coredump pc = {};
1034 
1035  // Try with the suggested path first. If there is no suggested path or it
1036  // failed to open, use a temporary file.
1037  if (path.empty() ||
1038  openFile(path, pc.pc_fd, CD_CreateNew, FA_Write, OF_None)) {
1039  if (std::error_code errc =
1040  createTemporaryFile("lldb", "core", pc.pc_fd, path))
1041  return llvm::createStringError(errc, "Unable to create a temporary file");
1042  }
1043  error = PtraceWrapper(PT_COREDUMP, GetID(), &pc, sizeof(pc));
1044 
1045  std::error_code close_err = closeFile(pc.pc_fd);
1046  if (error.Fail())
1047  return error.ToError();
1048  if (close_err)
1049  return llvm::createStringError(
1050  close_err, "Unable to close the core dump after writing");
1051  return path.str().str();
1052 #else // !defined(PT_COREDUMP)
1053  return llvm::createStringError(
1054  llvm::inconvertibleErrorCode(),
1055  "PT_COREDUMP not supported in the FreeBSD version used to build LLDB");
1056 #endif
1057 }
lldb_private::WaitStatus::type
Type type
Definition: Host.h:44
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Definition: NativeProcessProtocol.cpp:326
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Status SingleStep()
Definition: NativeThreadFreeBSD.cpp:59
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Definition: RangeMap.h:46
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Status Detach() override
Definition: NativeProcessFreeBSD.cpp:505
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Definition: NativeProcessProtocol.h:221
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Definition: NativeThreadFreeBSD.cpp:307
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Definition: ArchSpec.h:33
lldb_private::ArchSpec::IsMIPS
bool IsMIPS() const
if MIPS architecture return true.
Definition: ArchSpec.cpp:545
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#define O_NONBLOCK
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lldb_private::process_freebsd::NativeProcessFreeBSD::Signal
Status Signal(int signo) override
Sends a process a UNIX signal signal.
Definition: NativeProcessFreeBSD.cpp:518
lldb_private::process_freebsd::NativeProcessFreeBSD::SetBreakpoint
Status SetBreakpoint(lldb::addr_t addr, uint32_t size, bool hardware) override
Definition: NativeProcessFreeBSD.cpp:698
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lldb::eStateAttaching
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Process is currently trying to attach.
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Definition: NativeThreadFreeBSD.cpp:133
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Definition: NativeProcessFreeBSD.cpp:497
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static WaitStatus Decode(int wstatus)
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Definition: NativeThreadFreeBSD.cpp:106
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const char * StateAsCString(lldb::StateType state)
Converts a StateType to a C string.
Definition: State.cpp:14
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std::unordered_map< lldb::addr_t, SoftwareBreakpoint > m_software_breakpoints
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const char * AsCString(const char *value_if_empty=nullptr) const
Get the string value as a C string.
Definition: ConstString.h:193
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llvm::Expected< std::string > SaveCore(llvm::StringRef path_hint) override
Write a core dump (without crashing the program).
Definition: NativeProcessFreeBSD.cpp:1027
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Definition: MemoryRegionInfo.h:21
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Definition: NativeProcessFreeBSD.cpp:144
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@ pc
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Definition: NativeProcessProtocol.h:409
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Definition: NativeThreadFreeBSD.h:25
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Status ReinitializeThreads()
Definition: NativeProcessFreeBSD.cpp:936
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Definition: NativeProcessFreeBSD.h:101
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@ eErrorTypePOSIX
POSIX error codes.
Definition: lldb-enumerations.h:310
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@ eStateExited
Process has exited and can't be examined.
Definition: lldb-enumerations.h:90
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NativeDelegate & m_delegate
Definition: NativeProcessProtocol.h:406
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Definition: Host.h:34
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Definition: MainLoopBase.h:31
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Definition: MainLoop.cpp:300
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const ResumeAction * GetActionForThread(lldb::tid_t tid, bool default_ok) const
Definition: Debug.h:74
lldb::eStateStopped
@ eStateStopped
Process or thread is stopped and can be examined.
Definition: lldb-enumerations.h:84
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void SetCurrentThreadID(lldb::tid_t tid)
Definition: NativeProcessProtocol.h:205
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virtual llvm::Expected< llvm::ArrayRef< uint8_t > > GetSoftwareBreakpointTrapOpcode(size_t size_hint)
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Definition: NativeThreadFreeBSD.cpp:112
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Definition: NativeProcessFreeBSD.cpp:359
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Definition: FileSpec.h:56
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Definition: RangeMap.h:64
LLDB_INVALID_SIGNAL_NUMBER
#define LLDB_INVALID_SIGNAL_NUMBER
Definition: lldb-defines.h:84
lldb_private::Status::Success
bool Success() const
Test for success condition.
Definition: Status.cpp:288
lldb_private::NativeProcessProtocol::NotifyDidExec
void NotifyDidExec()
Notify the delegate that an exec occurred.
Definition: NativeProcessProtocol.cpp:319
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@ eStateCrashed
Process or thread has crashed and can be examined.
Definition: lldb-enumerations.h:88
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Status GetLoadedModuleFileSpec(const char *module_path, FileSpec &file_spec) override
Definition: NativeProcessFreeBSD.cpp:705
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static Status PtraceWrapper(int req, lldb::pid_t pid, void *addr=nullptr, int data=0, int *result=nullptr)
Definition: NativeProcessFreeBSD.cpp:387
NativeProcessFreeBSD.h
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Definition: ProcessLaunchInfo.h:31
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Definition: NativeProcessFreeBSD.h:22
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lldb::StateType state
Definition: Debug.h:23
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Status Suspend()
Definition: NativeThreadFreeBSD.cpp:69
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Definition: NativeProcessFreeBSD.cpp:187
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void SetExecutable(OptionalBool val)
Definition: MemoryRegionInfo.h:58
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@ eStateConnected
Process is connected to remote debug services, but not launched or attached to anything yet.
Definition: lldb-enumerations.h:76
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bool Fail() const
Test for error condition.
Definition: Status.cpp:182
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Extension m_enabled_extensions
Definition: NativeProcessProtocol.h:417
SIGTRAP
#define SIGTRAP
Definition: windows/PosixApi.h:30
lldb::eStateLaunching
@ eStateLaunching
Process is in the process of launching.
Definition: lldb-enumerations.h:79
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Status WriteMemory(lldb::addr_t addr, const void *buf, size_t size, size_t &bytes_written) override
Definition: NativeProcessFreeBSD.cpp:879
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uint8_t status
Definition: Host.h:45
lldb_private::NativeProcessProtocol::GetID
lldb::pid_t GetID() const
Definition: NativeProcessProtocol.h:172
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HostProcess LaunchProcess(const ProcessLaunchInfo &launch_info, Status &error) override
Definition: ProcessLauncherPosixFork.cpp:258
lldb_private::process_freebsd::NativeProcessFreeBSD::ReadMemory
Status ReadMemory(lldb::addr_t addr, void *buf, size_t size, size_t &bytes_read) override
Definition: NativeProcessFreeBSD.cpp:852
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Log * GetLogIfAllCategoriesSet(uint32_t mask)
Definition: Logging.cpp:58
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lldb::StateType m_state
Definition: NativeProcessProtocol.h:401
lldb_private::process_freebsd::NativeProcessFreeBSD::MonitorCallback
void MonitorCallback(lldb::pid_t pid, int signal)
Definition: NativeProcessFreeBSD.cpp:162
ProcessPOSIXLog.h
lldb_private::NativeProcessProtocol::NativeDelegate::NewSubprocess
virtual void NewSubprocess(NativeProcessProtocol *parent_process, std::unique_ptr< NativeProcessProtocol > child_process)=0
lldb::eStateDetached
@ eStateDetached
Process has been detached and can't be examined.
Definition: lldb-enumerations.h:89
lldb_private::MemoryRegionInfo::GetName
ConstString GetName() const
Definition: MemoryRegionInfo.h:50
lldb_private::NativeProcessProtocol::Extension::vfork
@ vfork
lldb_private::process_freebsd::NativeProcessFreeBSD::Attach
Status Attach()
Definition: NativeProcessFreeBSD.cpp:823
lldb_private::FileSystem::Resolve
void Resolve(llvm::SmallVectorImpl< char > &path)
Resolve path to make it canonical.
Definition: common/FileSystem.cpp:255
lldb_private::HostProcess::GetProcessId
lldb::pid_t GetProcessId() const
Definition: HostProcess.cpp:29
lldb_private::process_freebsd::NativeThreadFreeBSD::SetStoppedWithNoReason
void SetStoppedWithNoReason()
Definition: NativeThreadFreeBSD.cpp:157
lldb::eStateUnloaded
@ eStateUnloaded
Process is object is valid, but not currently loaded.
Definition: lldb-enumerations.h:75
lldb_private::process_freebsd::NativeProcessFreeBSD::m_main_loop
MainLoop & m_main_loop
Definition: NativeProcessFreeBSD.h:103
lldb_private::NativeProcessProtocol::m_threads
std::vector< std::unique_ptr< NativeThreadProtocol > > m_threads
Definition: NativeProcessProtocol.h:397
lldb_private::NativeProcessProtocol::Extension::fork
@ fork
lldb_private::NativeProcessProtocol::RemoveBreakpoint
virtual Status RemoveBreakpoint(lldb::addr_t addr, bool hardware=false)
Definition: NativeProcessProtocol.cpp:605
lldb_private::ProcessLaunchInfo::GetPTY
PseudoTerminal & GetPTY()
Definition: ProcessLaunchInfo.h:125
lldb_private::MemoryRegionInfo::SetWritable
void SetWritable(OptionalBool val)
Definition: MemoryRegionInfo.h:56
lldb_private::process_freebsd::NativeThreadFreeBSD::Resume
Status Resume()
Definition: NativeThreadFreeBSD.cpp:44
EnsureFDFlags
static Status EnsureFDFlags(int fd, int flags)
Definition: NativeProcessFreeBSD.cpp:34
lldb_private::NativeProcessProtocol::Extension
Extension
Extension flag constants, returned by Factory::GetSupportedExtensions() and passed to SetEnabledExten...
Definition: NativeProcessProtocol.h:245
lldb_private::FileSpec::Clear
void Clear()
Clears the object state.
Definition: FileSpec.cpp:259
lldb_private::NativeProcessSoftwareSingleStep::m_threads_stepping_with_breakpoint
std::map< lldb::tid_t, lldb::addr_t > m_threads_stepping_with_breakpoint
Definition: NativeProcessSoftwareSingleStep.h:26
lldb_private::process_freebsd::NativeProcessFreeBSD::GetArchitecture
const ArchSpec & GetArchitecture() const override
Definition: NativeProcessFreeBSD.h:70
lldb::eStateStepping
@ eStateStepping
Process or thread is in the process of stepping and can not be examined.
Definition: lldb-enumerations.h:86
lldb::eStateSuspended
@ eStateSuspended
Process or thread is in a suspended state as far as the debugger is concerned while other processes o...
Definition: lldb-enumerations.h:91
lldb_private::NativeProcessProtocol::FixupBreakpointPCAsNeeded
void FixupBreakpointPCAsNeeded(NativeThreadProtocol &thread)
Definition: NativeProcessProtocol.cpp:555
lldb_private::process_freebsd::NativeThreadFreeBSD::SetStoppedByBreakpoint
void SetStoppedByBreakpoint()
Definition: NativeThreadFreeBSD.cpp:100
lldb_private::Status
Definition: Status.h:44
POSIX_LOG_MEMORY
#define POSIX_LOG_MEMORY
Definition: ProcessPOSIXLog.h:18
lldb_private::PseudoTerminal::ReleasePrimaryFileDescriptor
int ReleasePrimaryFileDescriptor()
Release the primary file descriptor.
Definition: PseudoTerminal.cpp:184
uint32_t
lldb_private::eLazyBoolNo
@ eLazyBoolNo
Definition: lldb-private-enumerations.h:115
lldb_private::MainLoop
Definition: MainLoop.h:38
lldb::pid_t
uint64_t pid_t
Definition: lldb-types.h:85
lldb_private::NativeThreadProtocol::GetID
lldb::tid_t GetID() const
Definition: NativeThreadProtocol.h:39
lldb_private::MemoryRegionInfo::SetMapped
void SetMapped(OptionalBool val)
Definition: MemoryRegionInfo.h:60
lldb_private::process_freebsd::NativeProcessFreeBSD::GetFileLoadAddress
Status GetFileLoadAddress(const llvm::StringRef &file_name, lldb::addr_t &load_addr) override
Definition: NativeProcessFreeBSD.cpp:726
lldb_private::Range::SetRangeBase
void SetRangeBase(BaseType b)
Definition: RangeMap.h:48
lldb_private::process_freebsd::NativeProcessFreeBSD::GetMemoryRegionInfo
Status GetMemoryRegionInfo(lldb::addr_t load_addr, MemoryRegionInfo &range_info) override
Definition: NativeProcessFreeBSD.cpp:560
lldb_private::Range::SetByteSize
void SetByteSize(SizeType s)
Definition: RangeMap.h:73
lldb_private::process_freebsd::NativeProcessFreeBSD::Kill
Status Kill() override
Definition: NativeProcessFreeBSD.cpp:529
lldb_private::process_freebsd::NativeProcessFreeBSD::GetAuxvData
llvm::ErrorOr< std::unique_ptr< llvm::MemoryBuffer > > GetAuxvData() const override
Definition: NativeProcessFreeBSD.cpp:909
LLDB_INVALID_ADDRESS
#define LLDB_INVALID_ADDRESS
Definition: lldb-defines.h:74
lldb_private::ConstString::GetCString
const char * GetCString() const
Get the string value as a C string.
Definition: ConstString.h:216
POSIX_LOG_PTRACE
#define POSIX_LOG_PTRACE
Definition: ProcessPOSIXLog.h:19
LLDB_LOG
#define LLDB_LOG(log,...)
The LLDB_LOG* macros defined below are the way to emit log messages.
Definition: Log.h:240
lldb_private::process_freebsd::NativeProcessFreeBSD::MonitorSIGTRAP
void MonitorSIGTRAP(lldb::pid_t pid)
Definition: NativeProcessFreeBSD.cpp:196
lldb_private::process_freebsd::NativeProcessFreeBSD::Interrupt
Status Interrupt() override
Tells a process to interrupt all operations as if by a Ctrl-C.
Definition: NativeProcessFreeBSD.cpp:527
lldb_private::process_freebsd::NativeRegisterContextFreeBSD
Definition: NativeRegisterContextFreeBSD.h:21
lldb_private::MemoryRegionInfo::GetRange
RangeType & GetRange()
Definition: MemoryRegionInfo.h:36
lldb_private::FileSystem::Instance
static FileSystem & Instance()
Definition: common/FileSystem.cpp:45
lldb_private::WaitStatus::Signal
@ Signal
Definition: Host.h:38
lldb_private::ResumeActionList
Definition: Debug.h:33
lldb_private
A class that represents a running process on the host machine.
Definition: SBCommandInterpreterRunOptions.h:16
lldb_private::NativeProcessELF
Definition: NativeProcessELF.h:21
lldb_private::process_freebsd::NativeProcessFreeBSD::AddThread
NativeThreadFreeBSD & AddThread(lldb::tid_t thread_id)
Definition: NativeProcessFreeBSD.cpp:788
fork
pid_t fork(void)
Definition: windows/PosixApi.h:121
Error
llvm::Error Error
Definition: UdtRecordCompleter.cpp:29
lldb_private::process_freebsd::NativeThreadFreeBSD::GetRegisterContext
NativeRegisterContextFreeBSD & GetRegisterContext() override
Definition: NativeThreadFreeBSD.cpp:244
lldb_private::process_freebsd::NativeProcessFreeBSD::SetupTrace
Status SetupTrace()
Definition: NativeProcessFreeBSD.cpp:921
lldb_private::process_freebsd::NativeThreadFreeBSD::SetStoppedByWatchpoint
void SetStoppedByWatchpoint(uint32_t wp_index)
Definition: NativeThreadFreeBSD.cpp:118
lldb_private::process_freebsd::NativeProcessFreeBSD::UpdateThreads
size_t UpdateThreads() override
Definition: NativeProcessFreeBSD.cpp:696
lldb::eStateInvalid
@ eStateInvalid
Definition: lldb-enumerations.h:74
lldb_private::process_freebsd::NativeProcessFreeBSD::SupportHardwareSingleStepping
bool SupportHardwareSingleStepping() const
Definition: NativeProcessFreeBSD.cpp:959
lldb_private::Status::ToError
llvm::Error ToError() const
Definition: Status.cpp:90
lldb_private::process_freebsd::NativeProcessFreeBSD::MonitorExited
void MonitorExited(lldb::pid_t pid, WaitStatus status)
Definition: NativeProcessFreeBSD.cpp:173
State.h
LLDB_INVALID_INDEX32
#define LLDB_INVALID_INDEX32
Definition: lldb-defines.h:75
lldb_private::Log
Definition: Log.h:49
lldb_private::process_freebsd::NativeProcessFreeBSD::m_mem_region_cache
std::vector< std::pair< MemoryRegionInfo, FileSpec > > m_mem_region_cache
Definition: NativeProcessFreeBSD.h:105
lldb_private::ProcessPOSIXLog::GetLogIfAllCategoriesSet
static Log * GetLogIfAllCategoriesSet(uint32_t mask)
Definition: ProcessPOSIXLog.h:33
lldb_private::process_freebsd::NativeProcessFreeBSD::SigchldHandler
void SigchldHandler()
Definition: NativeProcessFreeBSD.cpp:743
lldb_private::process_freebsd::NativeThreadFreeBSD::SetStoppedBySignal
void SetStoppedBySignal(uint32_t signo, const siginfo_t *info=nullptr)
Definition: NativeThreadFreeBSD.cpp:76
lldb_private::Range::Contains
bool Contains(BaseType r) const
Definition: RangeMap.h:77
lldb
Definition: SBAddress.h:15
lldb_private::process_freebsd::NativeThreadFreeBSD::SetStoppedByVFork
void SetStoppedByVFork(lldb::pid_t child_pid, lldb::tid_t child_tid)
Definition: NativeThreadFreeBSD.cpp:142
lldb::eStateRunning
@ eStateRunning
Process or thread is running and can't be examined.
Definition: lldb-enumerations.h:85
LLDB_LOG_ERROR
#define LLDB_LOG_ERROR(log, error,...)
Definition: Log.h:263
lldb_private::WaitStatus::Exit
@ Exit
Definition: Host.h:36
lldb_private::process_freebsd::NativeProcessFreeBSD::m_arch
ArchSpec m_arch
Definition: NativeProcessFreeBSD.h:102
lldb_private::FileSpec::GetFilename
ConstString & GetFilename()
Filename string get accessor.
Definition: FileSpec.cpp:339
lldb_private::process_freebsd::NativeProcessFreeBSD::GetSoftwareBreakpointTrapOpcode
llvm::Expected< llvm::ArrayRef< uint8_t > > GetSoftwareBreakpointTrapOpcode(size_t size_hint) override
Definition: NativeProcessFreeBSD.cpp:412
lldb_private::WaitStatus::Stop
@ Stop
Definition: Host.h:40
lldb::tid_t
uint64_t tid_t
Definition: lldb-types.h:86
ProcessLauncherPosixFork.h
lldb_private::process_freebsd::NativeProcessFreeBSD::HasThreadNoLock
bool HasThreadNoLock(lldb::tid_t thread_id)
Definition: NativeProcessFreeBSD.cpp:775