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ABISysV_s390x.cpp
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1 //===-- ABISysV_s390x.cpp -------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "ABISysV_s390x.h"
10 
11 #include "llvm/ADT/STLExtras.h"
12 #include "llvm/ADT/Triple.h"
13 
14 #include "lldb/Core/Module.h"
16 #include "lldb/Core/Value.h"
20 #include "lldb/Symbol/UnwindPlan.h"
21 #include "lldb/Target/Process.h"
23 #include "lldb/Target/StackFrame.h"
24 #include "lldb/Target/Target.h"
25 #include "lldb/Target/Thread.h"
28 #include "lldb/Utility/LLDBLog.h"
29 #include "lldb/Utility/Log.h"
31 #include "lldb/Utility/Status.h"
32 
33 using namespace lldb;
34 using namespace lldb_private;
35 
37 
39  // General Purpose Registers
56  // Floating Point Registers / Vector Registers 0-15
73  // Access Registers
90  // Program Status Word
93  // Vector Registers 16-31
110 };
111 
112 // RegisterKind: EHFrame, DWARF, Generic, Process Plugin, LLDB
113 
114 #define DEFINE_REG(name, size, alt, generic) \
115  { \
116  #name, alt, size, 0, eEncodingUint, eFormatHex, \
117  {dwarf_##name##_s390x, dwarf_##name##_s390x, generic, \
118  LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, \
119  nullptr, nullptr, \
120  }
121 
122 static const RegisterInfo g_register_infos[] = {
123  DEFINE_REG(r0, 8, nullptr, LLDB_INVALID_REGNUM),
124  DEFINE_REG(r1, 8, nullptr, LLDB_INVALID_REGNUM),
125  DEFINE_REG(r2, 8, nullptr, LLDB_REGNUM_GENERIC_ARG1),
126  DEFINE_REG(r3, 8, nullptr, LLDB_REGNUM_GENERIC_ARG2),
127  DEFINE_REG(r4, 8, nullptr, LLDB_REGNUM_GENERIC_ARG3),
128  DEFINE_REG(r5, 8, nullptr, LLDB_REGNUM_GENERIC_ARG4),
129  DEFINE_REG(r6, 8, nullptr, LLDB_REGNUM_GENERIC_ARG5),
130  DEFINE_REG(r7, 8, nullptr, LLDB_INVALID_REGNUM),
131  DEFINE_REG(r8, 8, nullptr, LLDB_INVALID_REGNUM),
132  DEFINE_REG(r9, 8, nullptr, LLDB_INVALID_REGNUM),
133  DEFINE_REG(r10, 8, nullptr, LLDB_INVALID_REGNUM),
134  DEFINE_REG(r11, 8, nullptr, LLDB_REGNUM_GENERIC_FP),
135  DEFINE_REG(r12, 8, nullptr, LLDB_INVALID_REGNUM),
136  DEFINE_REG(r13, 8, nullptr, LLDB_INVALID_REGNUM),
137  DEFINE_REG(r14, 8, nullptr, LLDB_INVALID_REGNUM),
139  DEFINE_REG(acr0, 4, nullptr, LLDB_INVALID_REGNUM),
140  DEFINE_REG(acr1, 4, nullptr, LLDB_INVALID_REGNUM),
141  DEFINE_REG(acr2, 4, nullptr, LLDB_INVALID_REGNUM),
142  DEFINE_REG(acr3, 4, nullptr, LLDB_INVALID_REGNUM),
143  DEFINE_REG(acr4, 4, nullptr, LLDB_INVALID_REGNUM),
144  DEFINE_REG(acr5, 4, nullptr, LLDB_INVALID_REGNUM),
145  DEFINE_REG(acr6, 4, nullptr, LLDB_INVALID_REGNUM),
146  DEFINE_REG(acr7, 4, nullptr, LLDB_INVALID_REGNUM),
147  DEFINE_REG(acr8, 4, nullptr, LLDB_INVALID_REGNUM),
148  DEFINE_REG(acr9, 4, nullptr, LLDB_INVALID_REGNUM),
149  DEFINE_REG(acr10, 4, nullptr, LLDB_INVALID_REGNUM),
150  DEFINE_REG(acr11, 4, nullptr, LLDB_INVALID_REGNUM),
151  DEFINE_REG(acr12, 4, nullptr, LLDB_INVALID_REGNUM),
152  DEFINE_REG(acr13, 4, nullptr, LLDB_INVALID_REGNUM),
153  DEFINE_REG(acr14, 4, nullptr, LLDB_INVALID_REGNUM),
154  DEFINE_REG(acr15, 4, nullptr, LLDB_INVALID_REGNUM),
155  DEFINE_REG(pswm, 8, nullptr, LLDB_REGNUM_GENERIC_FLAGS),
156  DEFINE_REG(pswa, 8, nullptr, LLDB_REGNUM_GENERIC_PC),
157  DEFINE_REG(f0, 8, nullptr, LLDB_INVALID_REGNUM),
158  DEFINE_REG(f1, 8, nullptr, LLDB_INVALID_REGNUM),
159  DEFINE_REG(f2, 8, nullptr, LLDB_INVALID_REGNUM),
160  DEFINE_REG(f3, 8, nullptr, LLDB_INVALID_REGNUM),
161  DEFINE_REG(f4, 8, nullptr, LLDB_INVALID_REGNUM),
162  DEFINE_REG(f5, 8, nullptr, LLDB_INVALID_REGNUM),
163  DEFINE_REG(f6, 8, nullptr, LLDB_INVALID_REGNUM),
164  DEFINE_REG(f7, 8, nullptr, LLDB_INVALID_REGNUM),
165  DEFINE_REG(f8, 8, nullptr, LLDB_INVALID_REGNUM),
166  DEFINE_REG(f9, 8, nullptr, LLDB_INVALID_REGNUM),
167  DEFINE_REG(f10, 8, nullptr, LLDB_INVALID_REGNUM),
168  DEFINE_REG(f11, 8, nullptr, LLDB_INVALID_REGNUM),
169  DEFINE_REG(f12, 8, nullptr, LLDB_INVALID_REGNUM),
170  DEFINE_REG(f13, 8, nullptr, LLDB_INVALID_REGNUM),
171  DEFINE_REG(f14, 8, nullptr, LLDB_INVALID_REGNUM),
172  DEFINE_REG(f15, 8, nullptr, LLDB_INVALID_REGNUM),
173 };
174 
176  llvm::array_lengthof(g_register_infos);
177 
178 const lldb_private::RegisterInfo *
180  count = k_num_register_infos;
181  return g_register_infos;
182 }
183 
184 size_t ABISysV_s390x::GetRedZoneSize() const { return 0; }
185 
186 // Static Functions
187 
188 ABISP
189 ABISysV_s390x::CreateInstance(lldb::ProcessSP process_sp, const ArchSpec &arch) {
190  if (arch.GetTriple().getArch() == llvm::Triple::systemz) {
191  return ABISP(new ABISysV_s390x(std::move(process_sp), MakeMCRegisterInfo(arch)));
192  }
193  return ABISP();
194 }
195 
197  addr_t func_addr, addr_t return_addr,
198  llvm::ArrayRef<addr_t> args) const {
199  Log *log = GetLog(LLDBLog::Expressions);
200 
201  if (log) {
202  StreamString s;
203  s.Printf("ABISysV_s390x::PrepareTrivialCall (tid = 0x%" PRIx64
204  ", sp = 0x%" PRIx64 ", func_addr = 0x%" PRIx64
205  ", return_addr = 0x%" PRIx64,
206  thread.GetID(), (uint64_t)sp, (uint64_t)func_addr,
207  (uint64_t)return_addr);
208 
209  for (size_t i = 0; i < args.size(); ++i)
210  s.Printf(", arg%" PRIu64 " = 0x%" PRIx64, static_cast<uint64_t>(i + 1),
211  args[i]);
212  s.PutCString(")");
213  log->PutString(s.GetString());
214  }
215 
216  RegisterContext *reg_ctx = thread.GetRegisterContext().get();
217  if (!reg_ctx)
218  return false;
219 
220  const RegisterInfo *pc_reg_info =
222  const RegisterInfo *sp_reg_info =
224  const RegisterInfo *ra_reg_info = reg_ctx->GetRegisterInfoByName("r14", 0);
225  ProcessSP process_sp(thread.GetProcess());
226 
227  // Allocate a new stack frame and space for stack arguments if necessary
228 
229  addr_t arg_pos = 0;
230  if (args.size() > 5) {
231  sp -= 8 * (args.size() - 5);
232  arg_pos = sp;
233  }
234 
235  sp -= 160;
236 
237  // Process arguments
238 
239  for (size_t i = 0; i < args.size(); ++i) {
240  if (i < 5) {
241  const RegisterInfo *reg_info = reg_ctx->GetRegisterInfo(
243  LLDB_LOGF(log, "About to write arg%" PRIu64 " (0x%" PRIx64 ") into %s",
244  static_cast<uint64_t>(i + 1), args[i], reg_info->name);
245  if (!reg_ctx->WriteRegisterFromUnsigned(reg_info, args[i]))
246  return false;
247  } else {
248  Status error;
249  LLDB_LOGF(log, "About to write arg%" PRIu64 " (0x%" PRIx64 ") onto stack",
250  static_cast<uint64_t>(i + 1), args[i]);
251  if (!process_sp->WritePointerToMemory(arg_pos, args[i], error))
252  return false;
253  arg_pos += 8;
254  }
255  }
256 
257  // %r14 is set to the return address
258 
259  LLDB_LOGF(log, "Writing RA: 0x%" PRIx64, (uint64_t)return_addr);
260 
261  if (!reg_ctx->WriteRegisterFromUnsigned(ra_reg_info, return_addr))
262  return false;
263 
264  // %r15 is set to the actual stack value.
265 
266  LLDB_LOGF(log, "Writing SP: 0x%" PRIx64, (uint64_t)sp);
267 
268  if (!reg_ctx->WriteRegisterFromUnsigned(sp_reg_info, sp))
269  return false;
270 
271  // %pc is set to the address of the called function.
272 
273  LLDB_LOGF(log, "Writing PC: 0x%" PRIx64, (uint64_t)func_addr);
274 
275  if (!reg_ctx->WriteRegisterFromUnsigned(pc_reg_info, func_addr))
276  return false;
277 
278  return true;
279 }
280 
281 static bool ReadIntegerArgument(Scalar &scalar, unsigned int bit_width,
282  bool is_signed, Thread &thread,
283  uint32_t *argument_register_ids,
284  unsigned int &current_argument_register,
285  addr_t &current_stack_argument) {
286  if (bit_width > 64)
287  return false; // Scalar can't hold large integer arguments
288 
289  if (current_argument_register < 5) {
290  scalar = thread.GetRegisterContext()->ReadRegisterAsUnsigned(
291  argument_register_ids[current_argument_register], 0);
292  current_argument_register++;
293  if (is_signed)
294  scalar.SignExtend(bit_width);
295  } else {
296  uint32_t byte_size = (bit_width + (8 - 1)) / 8;
297  Status error;
298  if (thread.GetProcess()->ReadScalarIntegerFromMemory(
299  current_stack_argument + 8 - byte_size, byte_size, is_signed,
300  scalar, error)) {
301  current_stack_argument += 8;
302  return true;
303  }
304  return false;
305  }
306  return true;
307 }
308 
309 bool ABISysV_s390x::GetArgumentValues(Thread &thread, ValueList &values) const {
310  unsigned int num_values = values.GetSize();
311  unsigned int value_index;
312 
313  // Extract the register context so we can read arguments from registers
314 
315  RegisterContext *reg_ctx = thread.GetRegisterContext().get();
316 
317  if (!reg_ctx)
318  return false;
319 
320  // Get the pointer to the first stack argument so we have a place to start
321  // when reading data
322 
323  addr_t sp = reg_ctx->GetSP(0);
324 
325  if (!sp)
326  return false;
327 
328  addr_t current_stack_argument = sp + 160;
329 
330  uint32_t argument_register_ids[5];
331 
332  argument_register_ids[0] =
334  ->kinds[eRegisterKindLLDB];
335  argument_register_ids[1] =
337  ->kinds[eRegisterKindLLDB];
338  argument_register_ids[2] =
340  ->kinds[eRegisterKindLLDB];
341  argument_register_ids[3] =
343  ->kinds[eRegisterKindLLDB];
344  argument_register_ids[4] =
346  ->kinds[eRegisterKindLLDB];
347 
348  unsigned int current_argument_register = 0;
349 
350  for (value_index = 0; value_index < num_values; ++value_index) {
351  Value *value = values.GetValueAtIndex(value_index);
352 
353  if (!value)
354  return false;
355 
356  // We currently only support extracting values with Clang QualTypes. Do we
357  // care about others?
358  CompilerType compiler_type = value->GetCompilerType();
359  llvm::Optional<uint64_t> bit_size = compiler_type.GetBitSize(&thread);
360  if (!bit_size)
361  return false;
362  bool is_signed;
363 
364  if (compiler_type.IsIntegerOrEnumerationType(is_signed)) {
365  ReadIntegerArgument(value->GetScalar(), *bit_size, is_signed, thread,
366  argument_register_ids, current_argument_register,
367  current_stack_argument);
368  } else if (compiler_type.IsPointerType()) {
369  ReadIntegerArgument(value->GetScalar(), *bit_size, false, thread,
370  argument_register_ids, current_argument_register,
371  current_stack_argument);
372  }
373  }
374 
375  return true;
376 }
377 
378 Status ABISysV_s390x::SetReturnValueObject(lldb::StackFrameSP &frame_sp,
379  lldb::ValueObjectSP &new_value_sp) {
380  Status error;
381  if (!new_value_sp) {
382  error.SetErrorString("Empty value object for return value.");
383  return error;
384  }
385 
386  CompilerType compiler_type = new_value_sp->GetCompilerType();
387  if (!compiler_type) {
388  error.SetErrorString("Null clang type for return value.");
389  return error;
390  }
391 
392  Thread *thread = frame_sp->GetThread().get();
393 
394  bool is_signed;
395  uint32_t count;
396  bool is_complex;
397 
398  RegisterContext *reg_ctx = thread->GetRegisterContext().get();
399 
400  bool set_it_simple = false;
401  if (compiler_type.IsIntegerOrEnumerationType(is_signed) ||
402  compiler_type.IsPointerType()) {
403  const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoByName("r2", 0);
404 
405  DataExtractor data;
406  Status data_error;
407  size_t num_bytes = new_value_sp->GetData(data, data_error);
408  if (data_error.Fail()) {
409  error.SetErrorStringWithFormat(
410  "Couldn't convert return value to raw data: %s",
411  data_error.AsCString());
412  return error;
413  }
414  lldb::offset_t offset = 0;
415  if (num_bytes <= 8) {
416  uint64_t raw_value = data.GetMaxU64(&offset, num_bytes);
417 
418  if (reg_ctx->WriteRegisterFromUnsigned(reg_info, raw_value))
419  set_it_simple = true;
420  } else {
421  error.SetErrorString("We don't support returning longer than 64 bit "
422  "integer values at present.");
423  }
424  } else if (compiler_type.IsFloatingPointType(count, is_complex)) {
425  if (is_complex)
426  error.SetErrorString(
427  "We don't support returning complex values at present");
428  else {
429  llvm::Optional<uint64_t> bit_width =
430  compiler_type.GetBitSize(frame_sp.get());
431  if (!bit_width) {
432  error.SetErrorString("can't get type size");
433  return error;
434  }
435  if (*bit_width <= 64) {
436  const RegisterInfo *f0_info = reg_ctx->GetRegisterInfoByName("f0", 0);
437  RegisterValue f0_value;
438  DataExtractor data;
439  Status data_error;
440  size_t num_bytes = new_value_sp->GetData(data, data_error);
441  if (data_error.Fail()) {
442  error.SetErrorStringWithFormat(
443  "Couldn't convert return value to raw data: %s",
444  data_error.AsCString());
445  return error;
446  }
447 
448  unsigned char buffer[8];
449  ByteOrder byte_order = data.GetByteOrder();
450 
451  data.CopyByteOrderedData(0, num_bytes, buffer, 8, byte_order);
452  f0_value.SetBytes(buffer, 8, byte_order);
453  reg_ctx->WriteRegister(f0_info, f0_value);
454  set_it_simple = true;
455  } else {
456  // FIXME - don't know how to do long doubles yet.
457  error.SetErrorString(
458  "We don't support returning float values > 64 bits at present");
459  }
460  }
461  }
462 
463  if (!set_it_simple) {
464  // Okay we've got a structure or something that doesn't fit in a simple
465  // register. We should figure out where it really goes, but we don't
466  // support this yet.
467  error.SetErrorString("We only support setting simple integer and float "
468  "return types at present.");
469  }
470 
471  return error;
472 }
473 
475  Thread &thread, CompilerType &return_compiler_type) const {
476  ValueObjectSP return_valobj_sp;
477  Value value;
478 
479  if (!return_compiler_type)
480  return return_valobj_sp;
481 
482  // value.SetContext (Value::eContextTypeClangType, return_value_type);
483  value.SetCompilerType(return_compiler_type);
484 
485  RegisterContext *reg_ctx = thread.GetRegisterContext().get();
486  if (!reg_ctx)
487  return return_valobj_sp;
488 
489  const uint32_t type_flags = return_compiler_type.GetTypeInfo();
490  if (type_flags & eTypeIsScalar) {
491  value.SetValueType(Value::ValueType::Scalar);
492 
493  bool success = false;
494  if (type_flags & eTypeIsInteger) {
495  // Extract the register context so we can read arguments from registers.
496  llvm::Optional<uint64_t> byte_size =
497  return_compiler_type.GetByteSize(&thread);
498  if (!byte_size)
499  return return_valobj_sp;
500  uint64_t raw_value = thread.GetRegisterContext()->ReadRegisterAsUnsigned(
501  reg_ctx->GetRegisterInfoByName("r2", 0), 0);
502  const bool is_signed = (type_flags & eTypeIsSigned) != 0;
503  switch (*byte_size) {
504  default:
505  break;
506 
507  case sizeof(uint64_t):
508  if (is_signed)
509  value.GetScalar() = (int64_t)(raw_value);
510  else
511  value.GetScalar() = (uint64_t)(raw_value);
512  success = true;
513  break;
514 
515  case sizeof(uint32_t):
516  if (is_signed)
517  value.GetScalar() = (int32_t)(raw_value & UINT32_MAX);
518  else
519  value.GetScalar() = (uint32_t)(raw_value & UINT32_MAX);
520  success = true;
521  break;
522 
523  case sizeof(uint16_t):
524  if (is_signed)
525  value.GetScalar() = (int16_t)(raw_value & UINT16_MAX);
526  else
527  value.GetScalar() = (uint16_t)(raw_value & UINT16_MAX);
528  success = true;
529  break;
530 
531  case sizeof(uint8_t):
532  if (is_signed)
533  value.GetScalar() = (int8_t)(raw_value & UINT8_MAX);
534  else
535  value.GetScalar() = (uint8_t)(raw_value & UINT8_MAX);
536  success = true;
537  break;
538  }
539  } else if (type_flags & eTypeIsFloat) {
540  if (type_flags & eTypeIsComplex) {
541  // Don't handle complex yet.
542  } else {
543  llvm::Optional<uint64_t> byte_size =
544  return_compiler_type.GetByteSize(&thread);
545  if (byte_size && *byte_size <= sizeof(long double)) {
546  const RegisterInfo *f0_info = reg_ctx->GetRegisterInfoByName("f0", 0);
547  RegisterValue f0_value;
548  if (reg_ctx->ReadRegister(f0_info, f0_value)) {
549  DataExtractor data;
550  if (f0_value.GetData(data)) {
551  lldb::offset_t offset = 0;
552  if (*byte_size == sizeof(float)) {
553  value.GetScalar() = (float)data.GetFloat(&offset);
554  success = true;
555  } else if (*byte_size == sizeof(double)) {
556  value.GetScalar() = (double)data.GetDouble(&offset);
557  success = true;
558  } else if (*byte_size == sizeof(long double)) {
559  // Don't handle long double yet.
560  }
561  }
562  }
563  }
564  }
565  }
566 
567  if (success)
568  return_valobj_sp = ValueObjectConstResult::Create(
569  thread.GetStackFrameAtIndex(0).get(), value, ConstString(""));
570  } else if (type_flags & eTypeIsPointer) {
571  unsigned r2_id =
572  reg_ctx->GetRegisterInfoByName("r2", 0)->kinds[eRegisterKindLLDB];
573  value.GetScalar() =
574  (uint64_t)thread.GetRegisterContext()->ReadRegisterAsUnsigned(r2_id, 0);
575  value.SetValueType(Value::ValueType::Scalar);
576  return_valobj_sp = ValueObjectConstResult::Create(
577  thread.GetStackFrameAtIndex(0).get(), value, ConstString(""));
578  }
579 
580  return return_valobj_sp;
581 }
582 
584  Thread &thread, CompilerType &return_compiler_type) const {
585  ValueObjectSP return_valobj_sp;
586 
587  if (!return_compiler_type)
588  return return_valobj_sp;
589 
590  ExecutionContext exe_ctx(thread.shared_from_this());
591  return_valobj_sp = GetReturnValueObjectSimple(thread, return_compiler_type);
592  if (return_valobj_sp)
593  return return_valobj_sp;
594 
595  RegisterContextSP reg_ctx_sp = thread.GetRegisterContext();
596  if (!reg_ctx_sp)
597  return return_valobj_sp;
598 
599  if (return_compiler_type.IsAggregateType()) {
600  // FIXME: This is just taking a guess, r2 may very well no longer hold the
601  // return storage location.
602  // If we are going to do this right, when we make a new frame we should
603  // check to see if it uses a memory return, and if we are at the first
604  // instruction and if so stash away the return location. Then we would
605  // only return the memory return value if we know it is valid.
606 
607  unsigned r2_id =
608  reg_ctx_sp->GetRegisterInfoByName("r2", 0)->kinds[eRegisterKindLLDB];
609  lldb::addr_t storage_addr =
610  (uint64_t)thread.GetRegisterContext()->ReadRegisterAsUnsigned(r2_id, 0);
611  return_valobj_sp = ValueObjectMemory::Create(
612  &thread, "", Address(storage_addr, nullptr), return_compiler_type);
613  }
614 
615  return return_valobj_sp;
616 }
617 
619  unwind_plan.Clear();
620  unwind_plan.SetRegisterKind(eRegisterKindDWARF);
621 
623 
624  // Our Call Frame Address is the stack pointer value + 160
625  row->GetCFAValue().SetIsRegisterPlusOffset(dwarf_r15_s390x, 160);
626 
627  // The previous PC is in r14
628  row->SetRegisterLocationToRegister(dwarf_pswa_s390x, dwarf_r14_s390x, true);
629 
630  // All other registers are the same.
631  unwind_plan.AppendRow(row);
632  unwind_plan.SetSourceName("s390x at-func-entry default");
633  unwind_plan.SetSourcedFromCompiler(eLazyBoolNo);
634  return true;
635 }
636 
638  // There's really no default way to unwind on s390x. Trust the .eh_frame CFI,
639  // which should always be good.
640  return false;
641 }
642 
644  const RegisterInfo *reg_info,
645  UnwindPlan::Row::RegisterLocation &unwind_regloc) {
646  // If a volatile register is being requested, we don't want to forward the
647  // next frame's register contents up the stack -- the register is not
648  // retrievable at this frame.
649  if (RegisterIsVolatile(reg_info)) {
650  unwind_regloc.SetUndefined();
651  return true;
652  }
653 
654  return false;
655 }
656 
657 bool ABISysV_s390x::RegisterIsVolatile(const RegisterInfo *reg_info) {
658  return !RegisterIsCalleeSaved(reg_info);
659 }
660 
661 bool ABISysV_s390x::RegisterIsCalleeSaved(const RegisterInfo *reg_info) {
662  if (reg_info) {
663  // Preserved registers are :
664  // r6-r13, r15
665  // f8-f15
666 
667  const char *name = reg_info->name;
668  if (name[0] == 'r') {
669  switch (name[1]) {
670  case '6': // r6
671  case '7': // r7
672  case '8': // r8
673  case '9': // r9
674  return name[2] == '\0';
675 
676  case '1': // r10, r11, r12, r13, r15
677  if ((name[2] >= '0' && name[2] <= '3') || name[2] == '5')
678  return name[3] == '\0';
679  break;
680 
681  default:
682  break;
683  }
684  }
685  if (name[0] == 'f') {
686  switch (name[1]) {
687  case '8': // r8
688  case '9': // r9
689  return name[2] == '\0';
690 
691  case '1': // r10, r11, r12, r13, r14, r15
692  if (name[2] >= '0' && name[2] <= '5')
693  return name[3] == '\0';
694  break;
695 
696  default:
697  break;
698  }
699  }
700 
701  // Accept shorter-variant versions
702  if (name[0] == 's' && name[1] == 'p' && name[2] == '\0') // sp
703  return true;
704  if (name[0] == 'f' && name[1] == 'p' && name[2] == '\0') // fp
705  return true;
706  if (name[0] == 'p' && name[1] == 'c' && name[2] == '\0') // pc
707  return true;
708  }
709  return false;
710 }
711 
713  PluginManager::RegisterPlugin(
714  GetPluginNameStatic(), "System V ABI for s390x targets", CreateInstance);
715 }
716 
718  PluginManager::UnregisterPlugin(CreateInstance);
719 }
lldb_private::RegisterContext::WriteRegister
virtual bool WriteRegister(const RegisterInfo *reg_info, const RegisterValue &reg_value)=0
dwarf_v27_s390x
@ dwarf_v27_s390x
Definition: ABISysV_s390x.cpp:107
LLDB_REGNUM_GENERIC_ARG2
#define LLDB_REGNUM_GENERIC_ARG2
Definition: lldb-defines.h:58
ABISysV_s390x::CreateInstance
static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch)
Definition: ABISysV_s390x.cpp:189
LLDB_REGNUM_GENERIC_ARG3
#define LLDB_REGNUM_GENERIC_ARG3
Definition: lldb-defines.h:60
lldb_private::ExecutionContext
Definition: ExecutionContext.h:292
r12
@ r12
Definition: CompactUnwindInfo.cpp:706
lldb_private::UnwindPlan::AppendRow
void AppendRow(const RowSP &row_sp)
Definition: UnwindPlan.cpp:362
ABISysV_s390x::GetReturnValueObjectSimple
lldb::ValueObjectSP GetReturnValueObjectSimple(lldb_private::Thread &thread, lldb_private::CompilerType &ast_type) const
Definition: ABISysV_s390x.cpp:474
lldb_private::ArchSpec
Definition: ArchSpec.h:33
lldb_private::Log::PutString
void PutString(llvm::StringRef str)
Definition: Log.cpp:134
LLDB_REGNUM_GENERIC_ARG1
#define LLDB_REGNUM_GENERIC_ARG1
Definition: lldb-defines.h:56
ABISysV_s390x::GetRegisterInfoArray
const lldb_private::RegisterInfo * GetRegisterInfoArray(uint32_t &count) override
Definition: ABISysV_s390x.cpp:179
dwarf_acr13_s390x
@ dwarf_acr13_s390x
Definition: ABISysV_s390x.cpp:87
LLDB_INVALID_REGNUM
#define LLDB_INVALID_REGNUM
Definition: lldb-defines.h:79
dwarf_f11_s390x
@ dwarf_f11_s390x
Definition: ABISysV_s390x.cpp:70
ABISysV_s390x::RegisterIsVolatile
bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override
Definition: ABISysV_s390x.cpp:657
lldb_private::Scalar::SignExtend
bool SignExtend(uint32_t bit_pos)
Definition: Scalar.cpp:745
lldb_private::RegisterValue
Definition: RegisterValue.h:28
lldb_private::UnwindPlan::SetRegisterKind
void SetRegisterKind(lldb::RegisterKind kind)
Definition: UnwindPlan.h:437
lldb::eRegisterKindDWARF
@ eRegisterKindDWARF
the register numbers seen DWARF
Definition: lldb-enumerations.h:229
lldb_private::Value
Definition: Value.h:38
lldb_private::Value::SetValueType
void SetValueType(ValueType value_type)
Definition: Value.h:89
lldb::eRegisterKindGeneric
@ eRegisterKindGeneric
insn ptr reg, stack ptr reg, etc not specific to any particular target
Definition: lldb-enumerations.h:230
dwarf_f13_s390x
@ dwarf_f13_s390x
Definition: ABISysV_s390x.cpp:71
dwarf_v29_s390x
@ dwarf_v29_s390x
Definition: ABISysV_s390x.cpp:108
ABISysV_s390x::PrepareTrivialCall
bool PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp, lldb::addr_t functionAddress, lldb::addr_t returnAddress, llvm::ArrayRef< lldb::addr_t > args) const override
Definition: ABISysV_s390x.cpp:196
dwarf_v26_s390x
@ dwarf_v26_s390x
Definition: ABISysV_s390x.cpp:103
dwarf_f12_s390x
@ dwarf_f12_s390x
Definition: ABISysV_s390x.cpp:67
LLDB_REGNUM_GENERIC_ARG5
#define LLDB_REGNUM_GENERIC_ARG5
Definition: lldb-defines.h:64
lldb_private::ValueList::GetValueAtIndex
Value * GetValueAtIndex(size_t idx)
Definition: Value.cpp:669
r10
@ r10
Definition: CompactUnwindInfo.cpp:704
dwarf_acr14_s390x
@ dwarf_acr14_s390x
Definition: ABISysV_s390x.cpp:88
dwarf_r1_s390x
@ dwarf_r1_s390x
Definition: ABISysV_s390x.cpp:41
dwarf_v22_s390x
@ dwarf_v22_s390x
Definition: ABISysV_s390x.cpp:97
lldb_private::RegisterContext::ReadRegister
virtual bool ReadRegister(const RegisterInfo *reg_info, RegisterValue &reg_value)=0
lldb_private::Scalar
Definition: Scalar.h:34
LLDB_LOGF
#define LLDB_LOGF(log,...)
Definition: Log.h:343
DEFINE_REG
#define DEFINE_REG(name, size, alt, generic)
Definition: ABISysV_s390x.cpp:114
Module.h
dwarf_v30_s390x
@ dwarf_v30_s390x
Definition: ABISysV_s390x.cpp:105
ReadIntegerArgument
static bool ReadIntegerArgument(Scalar &scalar, unsigned int bit_width, bool is_signed, Thread &thread, uint32_t *argument_register_ids, unsigned int &current_argument_register, addr_t &current_stack_argument)
Definition: ABISysV_s390x.cpp:281
dwarf_acr6_s390x
@ dwarf_acr6_s390x
Definition: ABISysV_s390x.cpp:80
dwarf_v18_s390x
@ dwarf_v18_s390x
Definition: ABISysV_s390x.cpp:95
lldb_private::UnwindPlan::Row::RegisterLocation::SetUndefined
void SetUndefined()
Definition: UnwindPlan.h:84
lldb_private::CompilerType::GetByteSize
llvm::Optional< uint64_t > GetByteSize(ExecutionContextScope *exe_scope) const
Return the size of the type in bytes.
Definition: CompilerType.cpp:489
lldb::offset_t
uint64_t offset_t
Definition: lldb-types.h:87
RegisterValue.h
lldb_private::ValueList
Definition: Value.h:157
dwarf_regnums
dwarf_regnums
Definition: ABISysV_mips.cpp:38
StackFrame.h
dwarf_f4_s390x
@ dwarf_f4_s390x
Definition: ABISysV_s390x.cpp:59
ValueObjectMemory.h
ABISysV_s390x::SetReturnValueObject
lldb_private::Status SetReturnValueObject(lldb::StackFrameSP &frame_sp, lldb::ValueObjectSP &new_value) override
Definition: ABISysV_s390x.cpp:378
lldb_private::ArchSpec::GetTriple
llvm::Triple & GetTriple()
Architecture triple accessor.
Definition: ArchSpec.h:455
lldb_private::CompilerType::IsAggregateType
bool IsAggregateType() const
Definition: CompilerType.cpp:31
lldb::addr_t
uint64_t addr_t
Definition: lldb-types.h:83
lldb_private::CompilerType::IsFloatingPointType
bool IsFloatingPointType(uint32_t &count, bool &is_complex) const
Definition: CompilerType.cpp:191
dwarf_f2_s390x
@ dwarf_f2_s390x
Definition: ABISysV_s390x.cpp:58
lldb_private::UnwindPlan::SetSourceName
void SetSourceName(const char *)
Definition: UnwindPlan.cpp:564
lldb_private::ValueList::GetSize
size_t GetSize()
Definition: Value.cpp:667
dwarf_v16_s390x
@ dwarf_v16_s390x
Definition: ABISysV_s390x.cpp:94
lldb_private::RegisterValue::SetBytes
void SetBytes(const void *bytes, size_t length, lldb::ByteOrder byte_order)
Definition: RegisterValue.cpp:752
LLDB_PLUGIN_DEFINE_ADV
LLDB_PLUGIN_DEFINE_ADV(ObjectContainerUniversalMachO, ObjectContainerMachOArchive) void ObjectContainerUniversalMachO
Definition: ObjectContainerUniversalMachO.cpp:23
lldb_private::StreamString::GetString
llvm::StringRef GetString() const
Definition: StreamString.cpp:51
dwarf_acr8_s390x
@ dwarf_acr8_s390x
Definition: ABISysV_s390x.cpp:82
Process.h
lldb_private::CompilerType::IsIntegerOrEnumerationType
bool IsIntegerOrEnumerationType(bool &is_signed) const
Definition: CompilerType.cpp:153
dwarf_r13_s390x
@ dwarf_r13_s390x
Definition: ABISysV_s390x.cpp:53
lldb_private::Value::SetCompilerType
void SetCompilerType(const CompilerType &compiler_type)
Definition: Value.cpp:251
ABISysV_s390x::GetReturnValueObjectImpl
lldb::ValueObjectSP GetReturnValueObjectImpl(lldb_private::Thread &thread, lldb_private::CompilerType &type) const override
Definition: ABISysV_s390x.cpp:583
Target.h
lldb_private::Value::GetScalar
const Scalar & GetScalar() const
Definition: Value.h:112
lldb_private::Thread::GetProcess
lldb::ProcessSP GetProcess() const
Definition: Thread.h:153
LLDB_REGNUM_GENERIC_FLAGS
#define LLDB_REGNUM_GENERIC_FLAGS
Definition: lldb-defines.h:55
error
static llvm::raw_ostream & error(Stream &strm)
Definition: CommandReturnObject.cpp:17
dwarf_r2_s390x
@ dwarf_r2_s390x
Definition: ABISysV_s390x.cpp:42
r8
@ r8
Definition: CompactUnwindInfo.cpp:702
dwarf_r7_s390x
@ dwarf_r7_s390x
Definition: ABISysV_s390x.cpp:47
dwarf_r6_s390x
@ dwarf_r6_s390x
Definition: ABISysV_s390x.cpp:46
lldb::eRegisterKindLLDB
@ eRegisterKindLLDB
lldb's internal register numbers
Definition: lldb-enumerations.h:234
ABISysV_s390x::CreateFunctionEntryUnwindPlan
bool CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override
Definition: ABISysV_s390x.cpp:618
lldb_private::DataExtractor
Definition: DataExtractor.h:48
dwarf_acr0_s390x
@ dwarf_acr0_s390x
Definition: ABISysV_s390x.cpp:74
Log.h
dwarf_v24_s390x
@ dwarf_v24_s390x
Definition: ABISysV_s390x.cpp:102
dwarf_f15_s390x
@ dwarf_f15_s390x
Definition: ABISysV_s390x.cpp:72
dwarf_f6_s390x
@ dwarf_f6_s390x
Definition: ABISysV_s390x.cpp:60
lldb_private::Thread
Definition: Thread.h:61
dwarf_f1_s390x
@ dwarf_f1_s390x
Definition: ABISysV_s390x.cpp:61
lldb_private::Status::Fail
bool Fail() const
Test for error condition.
Definition: Status.cpp:181
lldb_private::DataExtractor::GetDouble
double GetDouble(lldb::offset_t *offset_ptr) const
Definition: DataExtractor.cpp:626
lldb_private::RegisterValue::GetData
bool GetData(DataExtractor &data) const
Definition: RegisterValue.cpp:34
r11
@ r11
Definition: CompactUnwindInfo.cpp:705
dwarf_acr3_s390x
@ dwarf_acr3_s390x
Definition: ABISysV_s390x.cpp:77
r14
@ r14
Definition: CompactUnwindInfo.cpp:708
lldb_private::RegisterContext::GetRegisterInfo
const RegisterInfo * GetRegisterInfo(lldb::RegisterKind reg_kind, uint32_t reg_num)
Definition: RegisterContext.cpp:80
lldb_private::UnwindPlan::SetSourcedFromCompiler
void SetSourcedFromCompiler(lldb_private::LazyBool from_compiler)
Definition: UnwindPlan.h:478
ABISysV_s390x::CreateDefaultUnwindPlan
bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override
Definition: ABISysV_s390x.cpp:637
lldb_private::DataExtractor::GetByteOrder
lldb::ByteOrder GetByteOrder() const
Get the current byte order value.
Definition: DataExtractor.h:594
ValueObjectRegister.h
lldb_private::ConstString
Definition: ConstString.h:40
ABISysV_s390x::GetFallbackRegisterLocation
bool GetFallbackRegisterLocation(const lldb_private::RegisterInfo *reg_info, lldb_private::UnwindPlan::Row::RegisterLocation &unwind_regloc) override
Definition: ABISysV_s390x.cpp:643
lldb_private::StreamString
Definition: StreamString.h:23
dwarf_f5_s390x
@ dwarf_f5_s390x
Definition: ABISysV_s390x.cpp:63
dwarf_r0_s390x
@ dwarf_r0_s390x
Definition: ABISysV_s390x.cpp:40
dwarf_r14_s390x
@ dwarf_r14_s390x
Definition: ABISysV_s390x.cpp:54
dwarf_r15_s390x
@ dwarf_r15_s390x
Definition: ABISysV_s390x.cpp:55
dwarf_v20_s390x
@ dwarf_v20_s390x
Definition: ABISysV_s390x.cpp:96
sp
@ sp
Definition: CompactUnwindInfo.cpp:1250
ABISysV_s390x::GetRedZoneSize
size_t GetRedZoneSize() const override
Definition: ABISysV_s390x.cpp:184
dwarf_f7_s390x
@ dwarf_f7_s390x
Definition: ABISysV_s390x.cpp:64
lldb_private::DataExtractor::GetFloat
float GetFloat(lldb::offset_t *offset_ptr) const
Extract a float from *offset_ptr.
Definition: DataExtractor.cpp:622
Thread.h
dwarf_acr11_s390x
@ dwarf_acr11_s390x
Definition: ABISysV_s390x.cpp:85
ABISysV_s390x
Definition: ABISysV_s390x.h:15
UnwindPlan.h
lldb_private::RegisterContext::GetSP
uint64_t GetSP(uint64_t fail_value=LLDB_INVALID_ADDRESS)
Definition: RegisterContext.cpp:152
lldb_private::RegisterContext
Definition: RegisterContext.h:17
k_num_register_infos
static const uint32_t k_num_register_infos
Definition: ABISysV_s390x.cpp:175
lldb_private::UserID::GetID
lldb::user_id_t GetID() const
Get accessor for the user ID.
Definition: UserID.h:47
lldb_private::UnwindPlan::Row::RegisterLocation
Definition: UnwindPlan.h:57
ValueObjectConstResult.h
dwarf_r4_s390x
@ dwarf_r4_s390x
Definition: ABISysV_s390x.cpp:44
lldb_private::UnwindPlan::RowSP
std::shared_ptr< Row > RowSP
Definition: UnwindPlan.h:395
dwarf_r12_s390x
@ dwarf_r12_s390x
Definition: ABISysV_s390x.cpp:52
dwarf_f8_s390x
@ dwarf_f8_s390x
Definition: ABISysV_s390x.cpp:65
lldb_private::UnwindPlan::Clear
void Clear()
Definition: UnwindPlan.h:508
lldb_private::Status
Definition: Status.h:44
dwarf_r3_s390x
@ dwarf_r3_s390x
Definition: ABISysV_s390x.cpp:43
dwarf_acr2_s390x
@ dwarf_acr2_s390x
Definition: ABISysV_s390x.cpp:76
dwarf_v21_s390x
@ dwarf_v21_s390x
Definition: ABISysV_s390x.cpp:100
dwarf_acr12_s390x
@ dwarf_acr12_s390x
Definition: ABISysV_s390x.cpp:86
lldb_private::RegisterContext::WriteRegisterFromUnsigned
bool WriteRegisterFromUnsigned(uint32_t reg, uint64_t uval)
Definition: RegisterContext.cpp:205
lldb_private::UnwindPlan::Row
Definition: UnwindPlan.h:55
dwarf_f0_s390x
@ dwarf_f0_s390x
Definition: ABISysV_s390x.cpp:57
uint32_t
lldb_private::eLazyBoolNo
@ eLazyBoolNo
Definition: lldb-private-enumerations.h:115
lldb_private::Address
Definition: Address.h:59
dwarf_r10_s390x
@ dwarf_r10_s390x
Definition: ABISysV_s390x.cpp:50
LLDB_REGNUM_GENERIC_SP
#define LLDB_REGNUM_GENERIC_SP
Definition: lldb-defines.h:52
dwarf_v28_s390x
@ dwarf_v28_s390x
Definition: ABISysV_s390x.cpp:104
lldb_private::DataExtractor::GetMaxU64
uint64_t GetMaxU64(lldb::offset_t *offset_ptr, size_t byte_size) const
Extract an unsigned integer of size byte_size from *offset_ptr.
Definition: DataExtractor.cpp:524
lldb_private::CompilerType::IsPointerType
bool IsPointerType(CompilerType *pointee_type=nullptr) const
Definition: CompilerType.cpp:157
lldb_private::CompilerType::GetBitSize
llvm::Optional< uint64_t > GetBitSize(ExecutionContextScope *exe_scope) const
Return the size of the type in bits.
Definition: CompilerType.cpp:482
lldb_private::CompilerType::GetTypeInfo
uint32_t GetTypeInfo(CompilerType *pointee_or_element_compiler_type=nullptr) const
Definition: CompilerType.cpp:290
dwarf_v17_s390x
@ dwarf_v17_s390x
Definition: ABISysV_s390x.cpp:98
UINT32_MAX
#define UINT32_MAX
Definition: lldb-defines.h:19
dwarf_acr5_s390x
@ dwarf_acr5_s390x
Definition: ABISysV_s390x.cpp:79
dwarf_acr9_s390x
@ dwarf_acr9_s390x
Definition: ABISysV_s390x.cpp:83
ABISysV_s390x::Initialize
static void Initialize()
Definition: ABISysV_s390x.cpp:712
dwarf_f10_s390x
@ dwarf_f10_s390x
Definition: ABISysV_s390x.cpp:66
uint16_t
PluginManager.h
DataExtractor.h
dwarf_acr4_s390x
@ dwarf_acr4_s390x
Definition: ABISysV_s390x.cpp:78
lldb_private::CompilerType
Generic representation of a type in a programming language.
Definition: CompilerType.h:33
lldb_private::Stream::Printf
size_t Printf(const char *format,...) __attribute__((format(printf
Output printf formatted output to the stream.
Definition: Stream.cpp:107
dwarf_f3_s390x
@ dwarf_f3_s390x
Definition: ABISysV_s390x.cpp:62
dwarf_r9_s390x
@ dwarf_r9_s390x
Definition: ABISysV_s390x.cpp:49
lldb_private::Value::GetCompilerType
const CompilerType & GetCompilerType()
Definition: Value.cpp:222
dwarf_r5_s390x
@ dwarf_r5_s390x
Definition: ABISysV_s390x.cpp:45
dwarf_v23_s390x
@ dwarf_v23_s390x
Definition: ABISysV_s390x.cpp:101
Status.h
LLDB_REGNUM_GENERIC_ARG4
#define LLDB_REGNUM_GENERIC_ARG4
Definition: lldb-defines.h:62
dwarf_pswm_s390x
@ dwarf_pswm_s390x
Definition: ABISysV_s390x.cpp:91
dwarf_acr7_s390x
@ dwarf_acr7_s390x
Definition: ABISysV_s390x.cpp:81
lldb_private
A class that represents a running process on the host machine.
Definition: SBCommandInterpreterRunOptions.h:16
dwarf_acr15_s390x
@ dwarf_acr15_s390x
Definition: ABISysV_s390x.cpp:89
LLDB_REGNUM_GENERIC_FP
#define LLDB_REGNUM_GENERIC_FP
Definition: lldb-defines.h:53
g_register_infos
static const RegisterInfo g_register_infos[]
Definition: ABISysV_s390x.cpp:122
r15
@ r15
Definition: CompactUnwindInfo.cpp:709
ABISysV_s390x::Terminate
static void Terminate()
Definition: ABISysV_s390x.cpp:717
LLDB_REGNUM_GENERIC_PC
#define LLDB_REGNUM_GENERIC_PC
Definition: lldb-defines.h:51
ABISysV_s390x.h
ConstString.h
lldb_private::DataExtractor::CopyByteOrderedData
lldb::offset_t CopyByteOrderedData(lldb::offset_t src_offset, lldb::offset_t src_len, void *dst, lldb::offset_t dst_len, lldb::ByteOrder dst_byte_order) const
Copy dst_len bytes from *offset_ptr and ensure the copied data is treated as a value that can be swap...
Definition: DataExtractor.cpp:690
dwarf_acr10_s390x
@ dwarf_acr10_s390x
Definition: ABISysV_s390x.cpp:84
dwarf_r8_s390x
@ dwarf_r8_s390x
Definition: ABISysV_s390x.cpp:48
dwarf_r11_s390x
@ dwarf_r11_s390x
Definition: ABISysV_s390x.cpp:51
dwarf_pswa_s390x
@ dwarf_pswa_s390x
Definition: ABISysV_s390x.cpp:92
lldb_private::Log
Definition: Log.h:115
lldb_private::Stream::PutCString
size_t PutCString(llvm::StringRef cstr)
Output a C string to the stream.
Definition: Stream.cpp:63
dwarf_v31_s390x
@ dwarf_v31_s390x
Definition: ABISysV_s390x.cpp:109
lldb_private::Thread::GetStackFrameAtIndex
virtual lldb::StackFrameSP GetStackFrameAtIndex(uint32_t idx)
Definition: Thread.h:398
lldb_private::Thread::GetRegisterContext
virtual lldb::RegisterContextSP GetRegisterContext()=0
lldb_private::GetLog
Log * GetLog(Cat mask)
Retrieve the Log object for the channel associated with the given log enum.
Definition: Log.h:308
ABISysV_s390x::GetArgumentValues
bool GetArgumentValues(lldb_private::Thread &thread, lldb_private::ValueList &values) const override
Definition: ABISysV_s390x.cpp:309
dwarf_v25_s390x
@ dwarf_v25_s390x
Definition: ABISysV_s390x.cpp:106
r9
@ r9
Definition: CompactUnwindInfo.cpp:703
lldb_private::UnwindPlan
Definition: UnwindPlan.h:53
lldb
Definition: SBAddress.h:15
ABISysV_s390x::RegisterIsCalleeSaved
bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info)
Definition: ABISysV_s390x.cpp:661
RegisterContext.h
Value.h
dwarf_acr1_s390x
@ dwarf_acr1_s390x
Definition: ABISysV_s390x.cpp:75
LLDBLog.h
dwarf_f9_s390x
@ dwarf_f9_s390x
Definition: ABISysV_s390x.cpp:69
dwarf_v19_s390x
@ dwarf_v19_s390x
Definition: ABISysV_s390x.cpp:99
dwarf_f14_s390x
@ dwarf_f14_s390x
Definition: ABISysV_s390x.cpp:68
lldb_private::RegisterContext::GetRegisterInfoByName
const RegisterInfo * GetRegisterInfoByName(llvm::StringRef reg_name, uint32_t start_idx=0)
Definition: RegisterContext.cpp:52
lldb::ByteOrder
ByteOrder
Byte ordering definitions.
Definition: lldb-enumerations.h:138
lldb_private::Status::AsCString
const char * AsCString(const char *default_error_str="unknown error") const
Get the error string associated with the current error.
Definition: Status.cpp:130
r13
@ r13
Definition: CompactUnwindInfo.cpp:707