1 //===-- GDBRemoteRegisterContext.cpp ----------------------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "GDBRemoteRegisterContext.h"
11
12 // C Includes
13 // C++ Includes
14 // Other libraries and framework includes
15 #include "lldb/Core/DataBufferHeap.h"
16 #include "lldb/Core/DataExtractor.h"
17 #include "lldb/Core/RegisterValue.h"
18 #include "lldb/Core/Scalar.h"
19 #include "lldb/Core/StreamString.h"
20 #ifndef LLDB_DISABLE_PYTHON
21 #include "lldb/Interpreter/PythonDataObjects.h"
22 #endif
23 #include "lldb/Target/ExecutionContext.h"
24 #include "lldb/Utility/Utils.h"
25 // Project includes
26 #include "Utility/StringExtractorGDBRemote.h"
27 #include "ProcessGDBRemote.h"
28 #include "ProcessGDBRemoteLog.h"
29 #include "ThreadGDBRemote.h"
30 #include "Utility/ARM_GCC_Registers.h"
31 #include "Utility/ARM_DWARF_Registers.h"
32
33 using namespace lldb;
34 using namespace lldb_private;
35
36 //----------------------------------------------------------------------
37 // GDBRemoteRegisterContext constructor
38 //----------------------------------------------------------------------
GDBRemoteRegisterContext(ThreadGDBRemote & thread,uint32_t concrete_frame_idx,GDBRemoteDynamicRegisterInfo & reg_info,bool read_all_at_once)39 GDBRemoteRegisterContext::GDBRemoteRegisterContext
40 (
41 ThreadGDBRemote &thread,
42 uint32_t concrete_frame_idx,
43 GDBRemoteDynamicRegisterInfo ®_info,
44 bool read_all_at_once
45 ) :
46 RegisterContext (thread, concrete_frame_idx),
47 m_reg_info (reg_info),
48 m_reg_valid (),
49 m_reg_data (),
50 m_read_all_at_once (read_all_at_once)
51 {
52 // Resize our vector of bools to contain one bool for every register.
53 // We will use these boolean values to know when a register value
54 // is valid in m_reg_data.
55 m_reg_valid.resize (reg_info.GetNumRegisters());
56
57 // Make a heap based buffer that is big enough to store all registers
58 DataBufferSP reg_data_sp(new DataBufferHeap (reg_info.GetRegisterDataByteSize(), 0));
59 m_reg_data.SetData (reg_data_sp);
60 m_reg_data.SetByteOrder(thread.GetProcess()->GetByteOrder());
61 }
62
63 //----------------------------------------------------------------------
64 // Destructor
65 //----------------------------------------------------------------------
~GDBRemoteRegisterContext()66 GDBRemoteRegisterContext::~GDBRemoteRegisterContext()
67 {
68 }
69
70 void
InvalidateAllRegisters()71 GDBRemoteRegisterContext::InvalidateAllRegisters ()
72 {
73 SetAllRegisterValid (false);
74 }
75
76 void
SetAllRegisterValid(bool b)77 GDBRemoteRegisterContext::SetAllRegisterValid (bool b)
78 {
79 std::vector<bool>::iterator pos, end = m_reg_valid.end();
80 for (pos = m_reg_valid.begin(); pos != end; ++pos)
81 *pos = b;
82 }
83
84 size_t
GetRegisterCount()85 GDBRemoteRegisterContext::GetRegisterCount ()
86 {
87 return m_reg_info.GetNumRegisters ();
88 }
89
90 const RegisterInfo *
GetRegisterInfoAtIndex(size_t reg)91 GDBRemoteRegisterContext::GetRegisterInfoAtIndex (size_t reg)
92 {
93 return m_reg_info.GetRegisterInfoAtIndex (reg);
94 }
95
96 size_t
GetRegisterSetCount()97 GDBRemoteRegisterContext::GetRegisterSetCount ()
98 {
99 return m_reg_info.GetNumRegisterSets ();
100 }
101
102
103
104 const RegisterSet *
GetRegisterSet(size_t reg_set)105 GDBRemoteRegisterContext::GetRegisterSet (size_t reg_set)
106 {
107 return m_reg_info.GetRegisterSet (reg_set);
108 }
109
110
111
112 bool
ReadRegister(const RegisterInfo * reg_info,RegisterValue & value)113 GDBRemoteRegisterContext::ReadRegister (const RegisterInfo *reg_info, RegisterValue &value)
114 {
115 // Read the register
116 if (ReadRegisterBytes (reg_info, m_reg_data))
117 {
118 const bool partial_data_ok = false;
119 Error error (value.SetValueFromData(reg_info, m_reg_data, reg_info->byte_offset, partial_data_ok));
120 return error.Success();
121 }
122 return false;
123 }
124
125 bool
PrivateSetRegisterValue(uint32_t reg,StringExtractor & response)126 GDBRemoteRegisterContext::PrivateSetRegisterValue (uint32_t reg, StringExtractor &response)
127 {
128 const RegisterInfo *reg_info = GetRegisterInfoAtIndex (reg);
129 if (reg_info == NULL)
130 return false;
131
132 // Invalidate if needed
133 InvalidateIfNeeded(false);
134
135 const uint32_t reg_byte_size = reg_info->byte_size;
136 const size_t bytes_copied = response.GetHexBytes (const_cast<uint8_t*>(m_reg_data.PeekData(reg_info->byte_offset, reg_byte_size)), reg_byte_size, '\xcc');
137 bool success = bytes_copied == reg_byte_size;
138 if (success)
139 {
140 SetRegisterIsValid(reg, true);
141 }
142 else if (bytes_copied > 0)
143 {
144 // Only set register is valid to false if we copied some bytes, else
145 // leave it as it was.
146 SetRegisterIsValid(reg, false);
147 }
148 return success;
149 }
150
151 // Helper function for GDBRemoteRegisterContext::ReadRegisterBytes().
152 bool
GetPrimordialRegister(const lldb_private::RegisterInfo * reg_info,GDBRemoteCommunicationClient & gdb_comm)153 GDBRemoteRegisterContext::GetPrimordialRegister(const lldb_private::RegisterInfo *reg_info,
154 GDBRemoteCommunicationClient &gdb_comm)
155 {
156 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB];
157 StringExtractorGDBRemote response;
158 if (gdb_comm.ReadRegister(m_thread.GetProtocolID(), reg, response))
159 return PrivateSetRegisterValue (reg, response);
160 return false;
161 }
162
163 bool
ReadRegisterBytes(const RegisterInfo * reg_info,DataExtractor & data)164 GDBRemoteRegisterContext::ReadRegisterBytes (const RegisterInfo *reg_info, DataExtractor &data)
165 {
166 ExecutionContext exe_ctx (CalculateThread());
167
168 Process *process = exe_ctx.GetProcessPtr();
169 Thread *thread = exe_ctx.GetThreadPtr();
170 if (process == NULL || thread == NULL)
171 return false;
172
173 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote());
174
175 InvalidateIfNeeded(false);
176
177 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB];
178
179 if (!GetRegisterIsValid(reg))
180 {
181 if (m_read_all_at_once)
182 {
183 StringExtractorGDBRemote response;
184 if (!gdb_comm.ReadAllRegisters(m_thread.GetProtocolID(), response))
185 return false;
186 if (response.IsNormalResponse())
187 if (response.GetHexBytes ((void *)m_reg_data.GetDataStart(), m_reg_data.GetByteSize(), '\xcc') == m_reg_data.GetByteSize())
188 SetAllRegisterValid (true);
189 }
190 else if (reg_info->value_regs)
191 {
192 // Process this composite register request by delegating to the constituent
193 // primordial registers.
194
195 // Index of the primordial register.
196 bool success = true;
197 for (uint32_t idx = 0; success; ++idx)
198 {
199 const uint32_t prim_reg = reg_info->value_regs[idx];
200 if (prim_reg == LLDB_INVALID_REGNUM)
201 break;
202 // We have a valid primordial regsiter as our constituent.
203 // Grab the corresponding register info.
204 const RegisterInfo *prim_reg_info = GetRegisterInfoAtIndex(prim_reg);
205 if (prim_reg_info == NULL)
206 success = false;
207 else
208 {
209 // Read the containing register if it hasn't already been read
210 if (!GetRegisterIsValid(prim_reg))
211 success = GetPrimordialRegister(prim_reg_info, gdb_comm);
212 }
213 }
214
215 if (success)
216 {
217 // If we reach this point, all primordial register requests have succeeded.
218 // Validate this composite register.
219 SetRegisterIsValid (reg_info, true);
220 }
221 }
222 else
223 {
224 // Get each register individually
225 GetPrimordialRegister(reg_info, gdb_comm);
226 }
227
228 // Make sure we got a valid register value after reading it
229 if (!GetRegisterIsValid(reg))
230 return false;
231 }
232
233 if (&data != &m_reg_data)
234 {
235 // If we aren't extracting into our own buffer (which
236 // only happens when this function is called from
237 // ReadRegisterValue(uint32_t, Scalar&)) then
238 // we transfer bytes from our buffer into the data
239 // buffer that was passed in
240 data.SetByteOrder (m_reg_data.GetByteOrder());
241 data.SetData (m_reg_data, reg_info->byte_offset, reg_info->byte_size);
242 }
243 return true;
244 }
245
246 bool
WriteRegister(const RegisterInfo * reg_info,const RegisterValue & value)247 GDBRemoteRegisterContext::WriteRegister (const RegisterInfo *reg_info,
248 const RegisterValue &value)
249 {
250 DataExtractor data;
251 if (value.GetData (data))
252 return WriteRegisterBytes (reg_info, data, 0);
253 return false;
254 }
255
256 // Helper function for GDBRemoteRegisterContext::WriteRegisterBytes().
257 bool
SetPrimordialRegister(const lldb_private::RegisterInfo * reg_info,GDBRemoteCommunicationClient & gdb_comm)258 GDBRemoteRegisterContext::SetPrimordialRegister(const lldb_private::RegisterInfo *reg_info,
259 GDBRemoteCommunicationClient &gdb_comm)
260 {
261 StreamString packet;
262 StringExtractorGDBRemote response;
263 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB];
264 packet.Printf ("P%x=", reg);
265 packet.PutBytesAsRawHex8 (m_reg_data.PeekData(reg_info->byte_offset, reg_info->byte_size),
266 reg_info->byte_size,
267 lldb::endian::InlHostByteOrder(),
268 lldb::endian::InlHostByteOrder());
269
270 if (gdb_comm.GetThreadSuffixSupported())
271 packet.Printf (";thread:%4.4" PRIx64 ";", m_thread.GetProtocolID());
272
273 // Invalidate just this register
274 SetRegisterIsValid(reg, false);
275 if (gdb_comm.SendPacketAndWaitForResponse(packet.GetString().c_str(),
276 packet.GetString().size(),
277 response,
278 false) == GDBRemoteCommunication::PacketResult::Success)
279 {
280 if (response.IsOKResponse())
281 return true;
282 }
283 return false;
284 }
285
286 void
SyncThreadState(Process * process)287 GDBRemoteRegisterContext::SyncThreadState(Process *process)
288 {
289 // NB. We assume our caller has locked the sequence mutex.
290
291 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *) process)->GetGDBRemote());
292 if (!gdb_comm.GetSyncThreadStateSupported())
293 return;
294
295 StreamString packet;
296 StringExtractorGDBRemote response;
297 packet.Printf ("QSyncThreadState:%4.4" PRIx64 ";", m_thread.GetProtocolID());
298 if (gdb_comm.SendPacketAndWaitForResponse(packet.GetString().c_str(),
299 packet.GetString().size(),
300 response,
301 false) == GDBRemoteCommunication::PacketResult::Success)
302 {
303 if (response.IsOKResponse())
304 InvalidateAllRegisters();
305 }
306 }
307
308 bool
WriteRegisterBytes(const lldb_private::RegisterInfo * reg_info,DataExtractor & data,uint32_t data_offset)309 GDBRemoteRegisterContext::WriteRegisterBytes (const lldb_private::RegisterInfo *reg_info, DataExtractor &data, uint32_t data_offset)
310 {
311 ExecutionContext exe_ctx (CalculateThread());
312
313 Process *process = exe_ctx.GetProcessPtr();
314 Thread *thread = exe_ctx.GetThreadPtr();
315 if (process == NULL || thread == NULL)
316 return false;
317
318 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote());
319 // FIXME: This check isn't right because IsRunning checks the Public state, but this
320 // is work you need to do - for instance in ShouldStop & friends - before the public
321 // state has been changed.
322 // if (gdb_comm.IsRunning())
323 // return false;
324
325 // Grab a pointer to where we are going to put this register
326 uint8_t *dst = const_cast<uint8_t*>(m_reg_data.PeekData(reg_info->byte_offset, reg_info->byte_size));
327
328 if (dst == NULL)
329 return false;
330
331
332 if (data.CopyByteOrderedData (data_offset, // src offset
333 reg_info->byte_size, // src length
334 dst, // dst
335 reg_info->byte_size, // dst length
336 m_reg_data.GetByteOrder())) // dst byte order
337 {
338 Mutex::Locker locker;
339 if (gdb_comm.GetSequenceMutex (locker, "Didn't get sequence mutex for write register."))
340 {
341 const bool thread_suffix_supported = gdb_comm.GetThreadSuffixSupported();
342 ProcessSP process_sp (m_thread.GetProcess());
343 if (thread_suffix_supported || static_cast<ProcessGDBRemote *>(process_sp.get())->GetGDBRemote().SetCurrentThread(m_thread.GetProtocolID()))
344 {
345 StreamString packet;
346 StringExtractorGDBRemote response;
347
348 if (m_read_all_at_once)
349 {
350 // Set all registers in one packet
351 packet.PutChar ('G');
352 packet.PutBytesAsRawHex8 (m_reg_data.GetDataStart(),
353 m_reg_data.GetByteSize(),
354 lldb::endian::InlHostByteOrder(),
355 lldb::endian::InlHostByteOrder());
356
357 if (thread_suffix_supported)
358 packet.Printf (";thread:%4.4" PRIx64 ";", m_thread.GetProtocolID());
359
360 // Invalidate all register values
361 InvalidateIfNeeded (true);
362
363 if (gdb_comm.SendPacketAndWaitForResponse(packet.GetString().c_str(),
364 packet.GetString().size(),
365 response,
366 false) == GDBRemoteCommunication::PacketResult::Success)
367 {
368 SetAllRegisterValid (false);
369 if (response.IsOKResponse())
370 {
371 return true;
372 }
373 }
374 }
375 else
376 {
377 bool success = true;
378
379 if (reg_info->value_regs)
380 {
381 // This register is part of another register. In this case we read the actual
382 // register data for any "value_regs", and once all that data is read, we will
383 // have enough data in our register context bytes for the value of this register
384
385 // Invalidate this composite register first.
386
387 for (uint32_t idx = 0; success; ++idx)
388 {
389 const uint32_t reg = reg_info->value_regs[idx];
390 if (reg == LLDB_INVALID_REGNUM)
391 break;
392 // We have a valid primordial regsiter as our constituent.
393 // Grab the corresponding register info.
394 const RegisterInfo *value_reg_info = GetRegisterInfoAtIndex(reg);
395 if (value_reg_info == NULL)
396 success = false;
397 else
398 success = SetPrimordialRegister(value_reg_info, gdb_comm);
399 }
400 }
401 else
402 {
403 // This is an actual register, write it
404 success = SetPrimordialRegister(reg_info, gdb_comm);
405 }
406
407 // Check if writing this register will invalidate any other register values?
408 // If so, invalidate them
409 if (reg_info->invalidate_regs)
410 {
411 for (uint32_t idx = 0, reg = reg_info->invalidate_regs[0];
412 reg != LLDB_INVALID_REGNUM;
413 reg = reg_info->invalidate_regs[++idx])
414 {
415 SetRegisterIsValid(reg, false);
416 }
417 }
418
419 return success;
420 }
421 }
422 }
423 else
424 {
425 Log *log (ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet (GDBR_LOG_THREAD | GDBR_LOG_PACKETS));
426 if (log)
427 {
428 if (log->GetVerbose())
429 {
430 StreamString strm;
431 gdb_comm.DumpHistory(strm);
432 log->Printf("error: failed to get packet sequence mutex, not sending write register for \"%s\":\n%s", reg_info->name, strm.GetData());
433 }
434 else
435 log->Printf("error: failed to get packet sequence mutex, not sending write register for \"%s\"", reg_info->name);
436 }
437 }
438 }
439 return false;
440 }
441
442 bool
ReadAllRegisterValues(lldb_private::RegisterCheckpoint & reg_checkpoint)443 GDBRemoteRegisterContext::ReadAllRegisterValues (lldb_private::RegisterCheckpoint ®_checkpoint)
444 {
445 ExecutionContext exe_ctx (CalculateThread());
446
447 Process *process = exe_ctx.GetProcessPtr();
448 Thread *thread = exe_ctx.GetThreadPtr();
449 if (process == NULL || thread == NULL)
450 return false;
451
452 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote());
453
454 uint32_t save_id = 0;
455 if (gdb_comm.SaveRegisterState(thread->GetProtocolID(), save_id))
456 {
457 reg_checkpoint.SetID(save_id);
458 reg_checkpoint.GetData().reset();
459 return true;
460 }
461 else
462 {
463 reg_checkpoint.SetID(0); // Invalid save ID is zero
464 return ReadAllRegisterValues(reg_checkpoint.GetData());
465 }
466 }
467
468 bool
WriteAllRegisterValues(const lldb_private::RegisterCheckpoint & reg_checkpoint)469 GDBRemoteRegisterContext::WriteAllRegisterValues (const lldb_private::RegisterCheckpoint ®_checkpoint)
470 {
471 uint32_t save_id = reg_checkpoint.GetID();
472 if (save_id != 0)
473 {
474 ExecutionContext exe_ctx (CalculateThread());
475
476 Process *process = exe_ctx.GetProcessPtr();
477 Thread *thread = exe_ctx.GetThreadPtr();
478 if (process == NULL || thread == NULL)
479 return false;
480
481 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote());
482
483 return gdb_comm.RestoreRegisterState(m_thread.GetProtocolID(), save_id);
484 }
485 else
486 {
487 return WriteAllRegisterValues(reg_checkpoint.GetData());
488 }
489 }
490
491 bool
ReadAllRegisterValues(lldb::DataBufferSP & data_sp)492 GDBRemoteRegisterContext::ReadAllRegisterValues (lldb::DataBufferSP &data_sp)
493 {
494 ExecutionContext exe_ctx (CalculateThread());
495
496 Process *process = exe_ctx.GetProcessPtr();
497 Thread *thread = exe_ctx.GetThreadPtr();
498 if (process == NULL || thread == NULL)
499 return false;
500
501 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote());
502
503 StringExtractorGDBRemote response;
504
505 Mutex::Locker locker;
506 if (gdb_comm.GetSequenceMutex (locker, "Didn't get sequence mutex for read all registers."))
507 {
508 SyncThreadState(process);
509
510 char packet[32];
511 const bool thread_suffix_supported = gdb_comm.GetThreadSuffixSupported();
512 ProcessSP process_sp (m_thread.GetProcess());
513 if (thread_suffix_supported || static_cast<ProcessGDBRemote *>(process_sp.get())->GetGDBRemote().SetCurrentThread(m_thread.GetProtocolID()))
514 {
515 int packet_len = 0;
516 if (thread_suffix_supported)
517 packet_len = ::snprintf (packet, sizeof(packet), "g;thread:%4.4" PRIx64, m_thread.GetProtocolID());
518 else
519 packet_len = ::snprintf (packet, sizeof(packet), "g");
520 assert (packet_len < ((int)sizeof(packet) - 1));
521
522 if (gdb_comm.SendPacketAndWaitForResponse(packet, packet_len, response, false) == GDBRemoteCommunication::PacketResult::Success)
523 {
524 if (response.IsErrorResponse())
525 return false;
526
527 std::string &response_str = response.GetStringRef();
528 if (isxdigit(response_str[0]))
529 {
530 response_str.insert(0, 1, 'G');
531 if (thread_suffix_supported)
532 {
533 char thread_id_cstr[64];
534 ::snprintf (thread_id_cstr, sizeof(thread_id_cstr), ";thread:%4.4" PRIx64 ";", m_thread.GetProtocolID());
535 response_str.append (thread_id_cstr);
536 }
537 data_sp.reset (new DataBufferHeap (response_str.c_str(), response_str.size()));
538 return true;
539 }
540 }
541 }
542 }
543 else
544 {
545 Log *log (ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet (GDBR_LOG_THREAD | GDBR_LOG_PACKETS));
546 if (log)
547 {
548 if (log->GetVerbose())
549 {
550 StreamString strm;
551 gdb_comm.DumpHistory(strm);
552 log->Printf("error: failed to get packet sequence mutex, not sending read all registers:\n%s", strm.GetData());
553 }
554 else
555 log->Printf("error: failed to get packet sequence mutex, not sending read all registers");
556 }
557 }
558
559 data_sp.reset();
560 return false;
561 }
562
563 bool
WriteAllRegisterValues(const lldb::DataBufferSP & data_sp)564 GDBRemoteRegisterContext::WriteAllRegisterValues (const lldb::DataBufferSP &data_sp)
565 {
566 if (!data_sp || data_sp->GetBytes() == NULL || data_sp->GetByteSize() == 0)
567 return false;
568
569 ExecutionContext exe_ctx (CalculateThread());
570
571 Process *process = exe_ctx.GetProcessPtr();
572 Thread *thread = exe_ctx.GetThreadPtr();
573 if (process == NULL || thread == NULL)
574 return false;
575
576 GDBRemoteCommunicationClient &gdb_comm (((ProcessGDBRemote *)process)->GetGDBRemote());
577
578 StringExtractorGDBRemote response;
579 Mutex::Locker locker;
580 if (gdb_comm.GetSequenceMutex (locker, "Didn't get sequence mutex for write all registers."))
581 {
582 const bool thread_suffix_supported = gdb_comm.GetThreadSuffixSupported();
583 ProcessSP process_sp (m_thread.GetProcess());
584 if (thread_suffix_supported || static_cast<ProcessGDBRemote *>(process_sp.get())->GetGDBRemote().SetCurrentThread(m_thread.GetProtocolID()))
585 {
586 // The data_sp contains the entire G response packet including the
587 // G, and if the thread suffix is supported, it has the thread suffix
588 // as well.
589 const char *G_packet = (const char *)data_sp->GetBytes();
590 size_t G_packet_len = data_sp->GetByteSize();
591 if (gdb_comm.SendPacketAndWaitForResponse (G_packet,
592 G_packet_len,
593 response,
594 false) == GDBRemoteCommunication::PacketResult::Success)
595 {
596 if (response.IsOKResponse())
597 return true;
598 else if (response.IsErrorResponse())
599 {
600 uint32_t num_restored = 0;
601 // We need to manually go through all of the registers and
602 // restore them manually
603
604 response.GetStringRef().assign (G_packet, G_packet_len);
605 response.SetFilePos(1); // Skip the leading 'G'
606 DataBufferHeap buffer (m_reg_data.GetByteSize(), 0);
607 DataExtractor restore_data (buffer.GetBytes(),
608 buffer.GetByteSize(),
609 m_reg_data.GetByteOrder(),
610 m_reg_data.GetAddressByteSize());
611
612 const uint32_t bytes_extracted = response.GetHexBytes ((void *)restore_data.GetDataStart(),
613 restore_data.GetByteSize(),
614 '\xcc');
615
616 if (bytes_extracted < restore_data.GetByteSize())
617 restore_data.SetData(restore_data.GetDataStart(), bytes_extracted, m_reg_data.GetByteOrder());
618
619 //ReadRegisterBytes (const RegisterInfo *reg_info, RegisterValue &value, DataExtractor &data)
620 const RegisterInfo *reg_info;
621 // We have to march the offset of each register along in the
622 // buffer to make sure we get the right offset.
623 uint32_t reg_byte_offset = 0;
624 for (uint32_t reg_idx=0; (reg_info = GetRegisterInfoAtIndex (reg_idx)) != NULL; ++reg_idx, reg_byte_offset += reg_info->byte_size)
625 {
626 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB];
627
628 // Skip composite registers.
629 if (reg_info->value_regs)
630 continue;
631
632 // Only write down the registers that need to be written
633 // if we are going to be doing registers individually.
634 bool write_reg = true;
635 const uint32_t reg_byte_size = reg_info->byte_size;
636
637 const char *restore_src = (const char *)restore_data.PeekData(reg_byte_offset, reg_byte_size);
638 if (restore_src)
639 {
640 if (GetRegisterIsValid(reg))
641 {
642 const char *current_src = (const char *)m_reg_data.PeekData(reg_byte_offset, reg_byte_size);
643 if (current_src)
644 write_reg = memcmp (current_src, restore_src, reg_byte_size) != 0;
645 }
646
647 if (write_reg)
648 {
649 StreamString packet;
650 packet.Printf ("P%x=", reg);
651 packet.PutBytesAsRawHex8 (restore_src,
652 reg_byte_size,
653 lldb::endian::InlHostByteOrder(),
654 lldb::endian::InlHostByteOrder());
655
656 if (thread_suffix_supported)
657 packet.Printf (";thread:%4.4" PRIx64 ";", m_thread.GetProtocolID());
658
659 SetRegisterIsValid(reg, false);
660 if (gdb_comm.SendPacketAndWaitForResponse(packet.GetString().c_str(),
661 packet.GetString().size(),
662 response,
663 false) == GDBRemoteCommunication::PacketResult::Success)
664 {
665 if (response.IsOKResponse())
666 ++num_restored;
667 }
668 }
669 }
670 }
671 return num_restored > 0;
672 }
673 }
674 }
675 }
676 else
677 {
678 Log *log (ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet (GDBR_LOG_THREAD | GDBR_LOG_PACKETS));
679 if (log)
680 {
681 if (log->GetVerbose())
682 {
683 StreamString strm;
684 gdb_comm.DumpHistory(strm);
685 log->Printf("error: failed to get packet sequence mutex, not sending write all registers:\n%s", strm.GetData());
686 }
687 else
688 log->Printf("error: failed to get packet sequence mutex, not sending write all registers");
689 }
690 }
691 return false;
692 }
693
694
695 uint32_t
ConvertRegisterKindToRegisterNumber(uint32_t kind,uint32_t num)696 GDBRemoteRegisterContext::ConvertRegisterKindToRegisterNumber (uint32_t kind, uint32_t num)
697 {
698 return m_reg_info.ConvertRegisterKindToRegisterNumber (kind, num);
699 }
700
701
702 void
HardcodeARMRegisters(bool from_scratch)703 GDBRemoteDynamicRegisterInfo::HardcodeARMRegisters(bool from_scratch)
704 {
705 // For Advanced SIMD and VFP register mapping.
706 static uint32_t g_d0_regs[] = { 26, 27, LLDB_INVALID_REGNUM }; // (s0, s1)
707 static uint32_t g_d1_regs[] = { 28, 29, LLDB_INVALID_REGNUM }; // (s2, s3)
708 static uint32_t g_d2_regs[] = { 30, 31, LLDB_INVALID_REGNUM }; // (s4, s5)
709 static uint32_t g_d3_regs[] = { 32, 33, LLDB_INVALID_REGNUM }; // (s6, s7)
710 static uint32_t g_d4_regs[] = { 34, 35, LLDB_INVALID_REGNUM }; // (s8, s9)
711 static uint32_t g_d5_regs[] = { 36, 37, LLDB_INVALID_REGNUM }; // (s10, s11)
712 static uint32_t g_d6_regs[] = { 38, 39, LLDB_INVALID_REGNUM }; // (s12, s13)
713 static uint32_t g_d7_regs[] = { 40, 41, LLDB_INVALID_REGNUM }; // (s14, s15)
714 static uint32_t g_d8_regs[] = { 42, 43, LLDB_INVALID_REGNUM }; // (s16, s17)
715 static uint32_t g_d9_regs[] = { 44, 45, LLDB_INVALID_REGNUM }; // (s18, s19)
716 static uint32_t g_d10_regs[] = { 46, 47, LLDB_INVALID_REGNUM }; // (s20, s21)
717 static uint32_t g_d11_regs[] = { 48, 49, LLDB_INVALID_REGNUM }; // (s22, s23)
718 static uint32_t g_d12_regs[] = { 50, 51, LLDB_INVALID_REGNUM }; // (s24, s25)
719 static uint32_t g_d13_regs[] = { 52, 53, LLDB_INVALID_REGNUM }; // (s26, s27)
720 static uint32_t g_d14_regs[] = { 54, 55, LLDB_INVALID_REGNUM }; // (s28, s29)
721 static uint32_t g_d15_regs[] = { 56, 57, LLDB_INVALID_REGNUM }; // (s30, s31)
722 static uint32_t g_q0_regs[] = { 26, 27, 28, 29, LLDB_INVALID_REGNUM }; // (d0, d1) -> (s0, s1, s2, s3)
723 static uint32_t g_q1_regs[] = { 30, 31, 32, 33, LLDB_INVALID_REGNUM }; // (d2, d3) -> (s4, s5, s6, s7)
724 static uint32_t g_q2_regs[] = { 34, 35, 36, 37, LLDB_INVALID_REGNUM }; // (d4, d5) -> (s8, s9, s10, s11)
725 static uint32_t g_q3_regs[] = { 38, 39, 40, 41, LLDB_INVALID_REGNUM }; // (d6, d7) -> (s12, s13, s14, s15)
726 static uint32_t g_q4_regs[] = { 42, 43, 44, 45, LLDB_INVALID_REGNUM }; // (d8, d9) -> (s16, s17, s18, s19)
727 static uint32_t g_q5_regs[] = { 46, 47, 48, 49, LLDB_INVALID_REGNUM }; // (d10, d11) -> (s20, s21, s22, s23)
728 static uint32_t g_q6_regs[] = { 50, 51, 52, 53, LLDB_INVALID_REGNUM }; // (d12, d13) -> (s24, s25, s26, s27)
729 static uint32_t g_q7_regs[] = { 54, 55, 56, 57, LLDB_INVALID_REGNUM }; // (d14, d15) -> (s28, s29, s30, s31)
730 static uint32_t g_q8_regs[] = { 59, 60, LLDB_INVALID_REGNUM }; // (d16, d17)
731 static uint32_t g_q9_regs[] = { 61, 62, LLDB_INVALID_REGNUM }; // (d18, d19)
732 static uint32_t g_q10_regs[] = { 63, 64, LLDB_INVALID_REGNUM }; // (d20, d21)
733 static uint32_t g_q11_regs[] = { 65, 66, LLDB_INVALID_REGNUM }; // (d22, d23)
734 static uint32_t g_q12_regs[] = { 67, 68, LLDB_INVALID_REGNUM }; // (d24, d25)
735 static uint32_t g_q13_regs[] = { 69, 70, LLDB_INVALID_REGNUM }; // (d26, d27)
736 static uint32_t g_q14_regs[] = { 71, 72, LLDB_INVALID_REGNUM }; // (d28, d29)
737 static uint32_t g_q15_regs[] = { 73, 74, LLDB_INVALID_REGNUM }; // (d30, d31)
738
739 // This is our array of composite registers, with each element coming from the above register mappings.
740 static uint32_t *g_composites[] = {
741 g_d0_regs, g_d1_regs, g_d2_regs, g_d3_regs, g_d4_regs, g_d5_regs, g_d6_regs, g_d7_regs,
742 g_d8_regs, g_d9_regs, g_d10_regs, g_d11_regs, g_d12_regs, g_d13_regs, g_d14_regs, g_d15_regs,
743 g_q0_regs, g_q1_regs, g_q2_regs, g_q3_regs, g_q4_regs, g_q5_regs, g_q6_regs, g_q7_regs,
744 g_q8_regs, g_q9_regs, g_q10_regs, g_q11_regs, g_q12_regs, g_q13_regs, g_q14_regs, g_q15_regs
745 };
746
747 static RegisterInfo g_register_infos[] = {
748 // NAME ALT SZ OFF ENCODING FORMAT COMPILER DWARF GENERIC GDB LLDB VALUE REGS INVALIDATE REGS
749 // ====== ====== === === ============= ============ =================== =================== ====================== === ==== ========== ===============
750 { "r0", "arg1", 4, 0, eEncodingUint, eFormatHex, { gcc_r0, dwarf_r0, LLDB_REGNUM_GENERIC_ARG1,0, 0 }, NULL, NULL},
751 { "r1", "arg2", 4, 0, eEncodingUint, eFormatHex, { gcc_r1, dwarf_r1, LLDB_REGNUM_GENERIC_ARG2,1, 1 }, NULL, NULL},
752 { "r2", "arg3", 4, 0, eEncodingUint, eFormatHex, { gcc_r2, dwarf_r2, LLDB_REGNUM_GENERIC_ARG3,2, 2 }, NULL, NULL},
753 { "r3", "arg4", 4, 0, eEncodingUint, eFormatHex, { gcc_r3, dwarf_r3, LLDB_REGNUM_GENERIC_ARG4,3, 3 }, NULL, NULL},
754 { "r4", NULL, 4, 0, eEncodingUint, eFormatHex, { gcc_r4, dwarf_r4, LLDB_INVALID_REGNUM, 4, 4 }, NULL, NULL},
755 { "r5", NULL, 4, 0, eEncodingUint, eFormatHex, { gcc_r5, dwarf_r5, LLDB_INVALID_REGNUM, 5, 5 }, NULL, NULL},
756 { "r6", NULL, 4, 0, eEncodingUint, eFormatHex, { gcc_r6, dwarf_r6, LLDB_INVALID_REGNUM, 6, 6 }, NULL, NULL},
757 { "r7", "fp", 4, 0, eEncodingUint, eFormatHex, { gcc_r7, dwarf_r7, LLDB_REGNUM_GENERIC_FP, 7, 7 }, NULL, NULL},
758 { "r8", NULL, 4, 0, eEncodingUint, eFormatHex, { gcc_r8, dwarf_r8, LLDB_INVALID_REGNUM, 8, 8 }, NULL, NULL},
759 { "r9", NULL, 4, 0, eEncodingUint, eFormatHex, { gcc_r9, dwarf_r9, LLDB_INVALID_REGNUM, 9, 9 }, NULL, NULL},
760 { "r10", NULL, 4, 0, eEncodingUint, eFormatHex, { gcc_r10, dwarf_r10, LLDB_INVALID_REGNUM, 10, 10 }, NULL, NULL},
761 { "r11", NULL, 4, 0, eEncodingUint, eFormatHex, { gcc_r11, dwarf_r11, LLDB_INVALID_REGNUM, 11, 11 }, NULL, NULL},
762 { "r12", NULL, 4, 0, eEncodingUint, eFormatHex, { gcc_r12, dwarf_r12, LLDB_INVALID_REGNUM, 12, 12 }, NULL, NULL},
763 { "sp", "r13", 4, 0, eEncodingUint, eFormatHex, { gcc_sp, dwarf_sp, LLDB_REGNUM_GENERIC_SP, 13, 13 }, NULL, NULL},
764 { "lr", "r14", 4, 0, eEncodingUint, eFormatHex, { gcc_lr, dwarf_lr, LLDB_REGNUM_GENERIC_RA, 14, 14 }, NULL, NULL},
765 { "pc", "r15", 4, 0, eEncodingUint, eFormatHex, { gcc_pc, dwarf_pc, LLDB_REGNUM_GENERIC_PC, 15, 15 }, NULL, NULL},
766 { "f0", NULL, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 16, 16 }, NULL, NULL},
767 { "f1", NULL, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 17, 17 }, NULL, NULL},
768 { "f2", NULL, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 18, 18 }, NULL, NULL},
769 { "f3", NULL, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 19, 19 }, NULL, NULL},
770 { "f4", NULL, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 20, 20 }, NULL, NULL},
771 { "f5", NULL, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 21, 21 }, NULL, NULL},
772 { "f6", NULL, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 22, 22 }, NULL, NULL},
773 { "f7", NULL, 12, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 23, 23 }, NULL, NULL},
774 { "fps", NULL, 4, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 24, 24 }, NULL, NULL},
775 { "cpsr","flags", 4, 0, eEncodingUint, eFormatHex, { gcc_cpsr, dwarf_cpsr, LLDB_INVALID_REGNUM, 25, 25 }, NULL, NULL},
776 { "s0", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s0, LLDB_INVALID_REGNUM, 26, 26 }, NULL, NULL},
777 { "s1", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s1, LLDB_INVALID_REGNUM, 27, 27 }, NULL, NULL},
778 { "s2", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s2, LLDB_INVALID_REGNUM, 28, 28 }, NULL, NULL},
779 { "s3", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s3, LLDB_INVALID_REGNUM, 29, 29 }, NULL, NULL},
780 { "s4", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s4, LLDB_INVALID_REGNUM, 30, 30 }, NULL, NULL},
781 { "s5", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s5, LLDB_INVALID_REGNUM, 31, 31 }, NULL, NULL},
782 { "s6", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s6, LLDB_INVALID_REGNUM, 32, 32 }, NULL, NULL},
783 { "s7", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s7, LLDB_INVALID_REGNUM, 33, 33 }, NULL, NULL},
784 { "s8", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s8, LLDB_INVALID_REGNUM, 34, 34 }, NULL, NULL},
785 { "s9", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s9, LLDB_INVALID_REGNUM, 35, 35 }, NULL, NULL},
786 { "s10", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s10, LLDB_INVALID_REGNUM, 36, 36 }, NULL, NULL},
787 { "s11", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s11, LLDB_INVALID_REGNUM, 37, 37 }, NULL, NULL},
788 { "s12", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s12, LLDB_INVALID_REGNUM, 38, 38 }, NULL, NULL},
789 { "s13", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s13, LLDB_INVALID_REGNUM, 39, 39 }, NULL, NULL},
790 { "s14", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s14, LLDB_INVALID_REGNUM, 40, 40 }, NULL, NULL},
791 { "s15", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s15, LLDB_INVALID_REGNUM, 41, 41 }, NULL, NULL},
792 { "s16", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s16, LLDB_INVALID_REGNUM, 42, 42 }, NULL, NULL},
793 { "s17", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s17, LLDB_INVALID_REGNUM, 43, 43 }, NULL, NULL},
794 { "s18", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s18, LLDB_INVALID_REGNUM, 44, 44 }, NULL, NULL},
795 { "s19", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s19, LLDB_INVALID_REGNUM, 45, 45 }, NULL, NULL},
796 { "s20", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s20, LLDB_INVALID_REGNUM, 46, 46 }, NULL, NULL},
797 { "s21", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s21, LLDB_INVALID_REGNUM, 47, 47 }, NULL, NULL},
798 { "s22", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s22, LLDB_INVALID_REGNUM, 48, 48 }, NULL, NULL},
799 { "s23", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s23, LLDB_INVALID_REGNUM, 49, 49 }, NULL, NULL},
800 { "s24", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s24, LLDB_INVALID_REGNUM, 50, 50 }, NULL, NULL},
801 { "s25", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s25, LLDB_INVALID_REGNUM, 51, 51 }, NULL, NULL},
802 { "s26", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s26, LLDB_INVALID_REGNUM, 52, 52 }, NULL, NULL},
803 { "s27", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s27, LLDB_INVALID_REGNUM, 53, 53 }, NULL, NULL},
804 { "s28", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s28, LLDB_INVALID_REGNUM, 54, 54 }, NULL, NULL},
805 { "s29", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s29, LLDB_INVALID_REGNUM, 55, 55 }, NULL, NULL},
806 { "s30", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s30, LLDB_INVALID_REGNUM, 56, 56 }, NULL, NULL},
807 { "s31", NULL, 4, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s31, LLDB_INVALID_REGNUM, 57, 57 }, NULL, NULL},
808 { "fpscr",NULL, 4, 0, eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, 58, 58 }, NULL, NULL},
809 { "d16", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d16, LLDB_INVALID_REGNUM, 59, 59 }, NULL, NULL},
810 { "d17", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d17, LLDB_INVALID_REGNUM, 60, 60 }, NULL, NULL},
811 { "d18", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d18, LLDB_INVALID_REGNUM, 61, 61 }, NULL, NULL},
812 { "d19", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d19, LLDB_INVALID_REGNUM, 62, 62 }, NULL, NULL},
813 { "d20", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d20, LLDB_INVALID_REGNUM, 63, 63 }, NULL, NULL},
814 { "d21", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d21, LLDB_INVALID_REGNUM, 64, 64 }, NULL, NULL},
815 { "d22", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d22, LLDB_INVALID_REGNUM, 65, 65 }, NULL, NULL},
816 { "d23", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d23, LLDB_INVALID_REGNUM, 66, 66 }, NULL, NULL},
817 { "d24", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d24, LLDB_INVALID_REGNUM, 67, 67 }, NULL, NULL},
818 { "d25", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d25, LLDB_INVALID_REGNUM, 68, 68 }, NULL, NULL},
819 { "d26", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d26, LLDB_INVALID_REGNUM, 69, 69 }, NULL, NULL},
820 { "d27", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d27, LLDB_INVALID_REGNUM, 70, 70 }, NULL, NULL},
821 { "d28", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d28, LLDB_INVALID_REGNUM, 71, 71 }, NULL, NULL},
822 { "d29", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d29, LLDB_INVALID_REGNUM, 72, 72 }, NULL, NULL},
823 { "d30", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d30, LLDB_INVALID_REGNUM, 73, 73 }, NULL, NULL},
824 { "d31", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d31, LLDB_INVALID_REGNUM, 74, 74 }, NULL, NULL},
825 { "d0", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d0, LLDB_INVALID_REGNUM, 75, 75 }, g_d0_regs, NULL},
826 { "d1", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d1, LLDB_INVALID_REGNUM, 76, 76 }, g_d1_regs, NULL},
827 { "d2", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d2, LLDB_INVALID_REGNUM, 77, 77 }, g_d2_regs, NULL},
828 { "d3", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d3, LLDB_INVALID_REGNUM, 78, 78 }, g_d3_regs, NULL},
829 { "d4", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d4, LLDB_INVALID_REGNUM, 79, 79 }, g_d4_regs, NULL},
830 { "d5", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d5, LLDB_INVALID_REGNUM, 80, 80 }, g_d5_regs, NULL},
831 { "d6", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d6, LLDB_INVALID_REGNUM, 81, 81 }, g_d6_regs, NULL},
832 { "d7", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d7, LLDB_INVALID_REGNUM, 82, 82 }, g_d7_regs, NULL},
833 { "d8", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d8, LLDB_INVALID_REGNUM, 83, 83 }, g_d8_regs, NULL},
834 { "d9", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d9, LLDB_INVALID_REGNUM, 84, 84 }, g_d9_regs, NULL},
835 { "d10", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d10, LLDB_INVALID_REGNUM, 85, 85 }, g_d10_regs, NULL},
836 { "d11", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d11, LLDB_INVALID_REGNUM, 86, 86 }, g_d11_regs, NULL},
837 { "d12", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d12, LLDB_INVALID_REGNUM, 87, 87 }, g_d12_regs, NULL},
838 { "d13", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d13, LLDB_INVALID_REGNUM, 88, 88 }, g_d13_regs, NULL},
839 { "d14", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d14, LLDB_INVALID_REGNUM, 89, 89 }, g_d14_regs, NULL},
840 { "d15", NULL, 8, 0, eEncodingIEEE754, eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d15, LLDB_INVALID_REGNUM, 90, 90 }, g_d15_regs, NULL},
841 { "q0", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q0, LLDB_INVALID_REGNUM, 91, 91 }, g_q0_regs, NULL},
842 { "q1", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q1, LLDB_INVALID_REGNUM, 92, 92 }, g_q1_regs, NULL},
843 { "q2", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q2, LLDB_INVALID_REGNUM, 93, 93 }, g_q2_regs, NULL},
844 { "q3", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q3, LLDB_INVALID_REGNUM, 94, 94 }, g_q3_regs, NULL},
845 { "q4", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q4, LLDB_INVALID_REGNUM, 95, 95 }, g_q4_regs, NULL},
846 { "q5", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q5, LLDB_INVALID_REGNUM, 96, 96 }, g_q5_regs, NULL},
847 { "q6", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q6, LLDB_INVALID_REGNUM, 97, 97 }, g_q6_regs, NULL},
848 { "q7", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q7, LLDB_INVALID_REGNUM, 98, 98 }, g_q7_regs, NULL},
849 { "q8", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q8, LLDB_INVALID_REGNUM, 99, 99 }, g_q8_regs, NULL},
850 { "q9", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q9, LLDB_INVALID_REGNUM, 100, 100 }, g_q9_regs, NULL},
851 { "q10", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q10, LLDB_INVALID_REGNUM, 101, 101 }, g_q10_regs, NULL},
852 { "q11", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q11, LLDB_INVALID_REGNUM, 102, 102 }, g_q11_regs, NULL},
853 { "q12", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q12, LLDB_INVALID_REGNUM, 103, 103 }, g_q12_regs, NULL},
854 { "q13", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q13, LLDB_INVALID_REGNUM, 104, 104 }, g_q13_regs, NULL},
855 { "q14", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q14, LLDB_INVALID_REGNUM, 105, 105 }, g_q14_regs, NULL},
856 { "q15", NULL, 16, 0, eEncodingVector, eFormatVectorOfUInt8, { LLDB_INVALID_REGNUM, dwarf_q15, LLDB_INVALID_REGNUM, 106, 106 }, g_q15_regs, NULL}
857 };
858
859 static const uint32_t num_registers = llvm::array_lengthof(g_register_infos);
860 static ConstString gpr_reg_set ("General Purpose Registers");
861 static ConstString sfp_reg_set ("Software Floating Point Registers");
862 static ConstString vfp_reg_set ("Floating Point Registers");
863 size_t i;
864 if (from_scratch)
865 {
866 // Calculate the offsets of the registers
867 // Note that the layout of the "composite" registers (d0-d15 and q0-q15) which comes after the
868 // "primordial" registers is important. This enables us to calculate the offset of the composite
869 // register by using the offset of its first primordial register. For example, to calculate the
870 // offset of q0, use s0's offset.
871 if (g_register_infos[2].byte_offset == 0)
872 {
873 uint32_t byte_offset = 0;
874 for (i=0; i<num_registers; ++i)
875 {
876 // For primordial registers, increment the byte_offset by the byte_size to arrive at the
877 // byte_offset for the next register. Otherwise, we have a composite register whose
878 // offset can be calculated by consulting the offset of its first primordial register.
879 if (!g_register_infos[i].value_regs)
880 {
881 g_register_infos[i].byte_offset = byte_offset;
882 byte_offset += g_register_infos[i].byte_size;
883 }
884 else
885 {
886 const uint32_t first_primordial_reg = g_register_infos[i].value_regs[0];
887 g_register_infos[i].byte_offset = g_register_infos[first_primordial_reg].byte_offset;
888 }
889 }
890 }
891 for (i=0; i<num_registers; ++i)
892 {
893 ConstString name;
894 ConstString alt_name;
895 if (g_register_infos[i].name && g_register_infos[i].name[0])
896 name.SetCString(g_register_infos[i].name);
897 if (g_register_infos[i].alt_name && g_register_infos[i].alt_name[0])
898 alt_name.SetCString(g_register_infos[i].alt_name);
899
900 if (i <= 15 || i == 25)
901 AddRegister (g_register_infos[i], name, alt_name, gpr_reg_set);
902 else if (i <= 24)
903 AddRegister (g_register_infos[i], name, alt_name, sfp_reg_set);
904 else
905 AddRegister (g_register_infos[i], name, alt_name, vfp_reg_set);
906 }
907 }
908 else
909 {
910 // Add composite registers to our primordial registers, then.
911 const size_t num_composites = llvm::array_lengthof(g_composites);
912 const size_t num_dynamic_regs = GetNumRegisters();
913 const size_t num_common_regs = num_registers - num_composites;
914 RegisterInfo *g_comp_register_infos = g_register_infos + num_common_regs;
915
916 // First we need to validate that all registers that we already have match the non composite regs.
917 // If so, then we can add the registers, else we need to bail
918 bool match = true;
919 if (num_dynamic_regs == num_common_regs)
920 {
921 for (i=0; match && i<num_dynamic_regs; ++i)
922 {
923 // Make sure all register names match
924 if (m_regs[i].name && g_register_infos[i].name)
925 {
926 if (strcmp(m_regs[i].name, g_register_infos[i].name))
927 {
928 match = false;
929 break;
930 }
931 }
932
933 // Make sure all register byte sizes match
934 if (m_regs[i].byte_size != g_register_infos[i].byte_size)
935 {
936 match = false;
937 break;
938 }
939 }
940 }
941 else
942 {
943 // Wrong number of registers.
944 match = false;
945 }
946 // If "match" is true, then we can add extra registers.
947 if (match)
948 {
949 for (i=0; i<num_composites; ++i)
950 {
951 ConstString name;
952 ConstString alt_name;
953 const uint32_t first_primordial_reg = g_comp_register_infos[i].value_regs[0];
954 const char *reg_name = g_register_infos[first_primordial_reg].name;
955 if (reg_name && reg_name[0])
956 {
957 for (uint32_t j = 0; j < num_dynamic_regs; ++j)
958 {
959 const RegisterInfo *reg_info = GetRegisterInfoAtIndex(j);
960 // Find a matching primordial register info entry.
961 if (reg_info && reg_info->name && ::strcasecmp(reg_info->name, reg_name) == 0)
962 {
963 // The name matches the existing primordial entry.
964 // Find and assign the offset, and then add this composite register entry.
965 g_comp_register_infos[i].byte_offset = reg_info->byte_offset;
966 name.SetCString(g_comp_register_infos[i].name);
967 AddRegister(g_comp_register_infos[i], name, alt_name, vfp_reg_set);
968 }
969 }
970 }
971 }
972 }
973 }
974 }
975