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