Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1 | //===-- RegisterContext.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 | // C Includes |
| 11 | // C++ Includes |
| 12 | // Other libraries and framework includes |
| 13 | // Project includes |
| 14 | #include "lldb/Target/RegisterContext.h" |
Jason Molenda | 8280cbe | 2010-10-25 11:12:07 +0000 | [diff] [blame] | 15 | #include "lldb/Core/DataExtractor.h" |
Greg Clayton | 061b79d | 2011-05-09 20:18:18 +0000 | [diff] [blame] | 16 | #include "lldb/Core/RegisterValue.h" |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 17 | #include "lldb/Core/Scalar.h" |
Greg Clayton | cd54803 | 2011-02-01 01:31:41 +0000 | [diff] [blame] | 18 | #include "lldb/Host/Endian.h" |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 19 | #include "lldb/Target/ExecutionContext.h" |
| 20 | #include "lldb/Target/StackFrame.h" |
Greg Clayton | a875b64 | 2011-01-09 21:07:35 +0000 | [diff] [blame] | 21 | #include "lldb/Target/Process.h" |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 22 | #include "lldb/Target/Thread.h" |
| 23 | |
| 24 | using namespace lldb; |
| 25 | using namespace lldb_private; |
| 26 | |
Greg Clayton | 08d7d3a | 2011-01-06 22:15:06 +0000 | [diff] [blame] | 27 | RegisterContext::RegisterContext (Thread &thread, uint32_t concrete_frame_idx) : |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 28 | m_thread (thread), |
Greg Clayton | a875b64 | 2011-01-09 21:07:35 +0000 | [diff] [blame] | 29 | m_concrete_frame_idx (concrete_frame_idx), |
Greg Clayton | f4124de | 2012-02-21 00:09:25 +0000 | [diff] [blame] | 30 | m_stop_id (thread.GetProcess()->GetStopID()) |
Jason Molenda | 8280cbe | 2010-10-25 11:12:07 +0000 | [diff] [blame] | 31 | { |
| 32 | } |
| 33 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 34 | //---------------------------------------------------------------------- |
| 35 | // Destructor |
| 36 | //---------------------------------------------------------------------- |
| 37 | RegisterContext::~RegisterContext() |
| 38 | { |
| 39 | } |
| 40 | |
Greg Clayton | a875b64 | 2011-01-09 21:07:35 +0000 | [diff] [blame] | 41 | void |
| 42 | RegisterContext::InvalidateIfNeeded (bool force) |
| 43 | { |
Greg Clayton | f4124de | 2012-02-21 00:09:25 +0000 | [diff] [blame] | 44 | ProcessSP process_sp (m_thread.GetProcess()); |
| 45 | bool invalidate = force; |
| 46 | uint32_t process_stop_id = UINT32_MAX; |
| 47 | |
| 48 | if (process_sp) |
| 49 | process_stop_id = process_sp->GetStopID(); |
| 50 | else |
| 51 | invalidate = true; |
| 52 | |
| 53 | if (!invalidate) |
| 54 | invalidate = process_stop_id != GetStopID(); |
| 55 | |
| 56 | if (invalidate) |
Greg Clayton | a875b64 | 2011-01-09 21:07:35 +0000 | [diff] [blame] | 57 | { |
| 58 | InvalidateAllRegisters (); |
| 59 | SetStopID (process_stop_id); |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 64 | const RegisterInfo * |
| 65 | RegisterContext::GetRegisterInfoByName (const char *reg_name, uint32_t start_idx) |
| 66 | { |
| 67 | if (reg_name && reg_name[0]) |
| 68 | { |
| 69 | const uint32_t num_registers = GetRegisterCount(); |
| 70 | for (uint32_t reg = start_idx; reg < num_registers; ++reg) |
| 71 | { |
| 72 | const RegisterInfo * reg_info = GetRegisterInfoAtIndex(reg); |
| 73 | |
| 74 | if ((reg_info->name != NULL && ::strcasecmp (reg_info->name, reg_name) == 0) || |
| 75 | (reg_info->alt_name != NULL && ::strcasecmp (reg_info->alt_name, reg_name) == 0)) |
| 76 | { |
| 77 | return reg_info; |
| 78 | } |
| 79 | } |
| 80 | } |
| 81 | return NULL; |
| 82 | } |
| 83 | |
| 84 | const char * |
| 85 | RegisterContext::GetRegisterName (uint32_t reg) |
| 86 | { |
| 87 | const RegisterInfo * reg_info = GetRegisterInfoAtIndex(reg); |
| 88 | if (reg_info) |
| 89 | return reg_info->name; |
| 90 | return NULL; |
| 91 | } |
| 92 | |
| 93 | uint64_t |
| 94 | RegisterContext::GetPC(uint64_t fail_value) |
| 95 | { |
| 96 | uint32_t reg = ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC); |
| 97 | return ReadRegisterAsUnsigned (reg, fail_value); |
| 98 | } |
| 99 | |
| 100 | bool |
| 101 | RegisterContext::SetPC(uint64_t pc) |
| 102 | { |
| 103 | uint32_t reg = ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC); |
| 104 | bool success = WriteRegisterFromUnsigned (reg, pc); |
| 105 | if (success) |
| 106 | { |
Greg Clayton | 08d7d3a | 2011-01-06 22:15:06 +0000 | [diff] [blame] | 107 | StackFrameSP frame_sp(m_thread.GetFrameWithConcreteFrameIndex (m_concrete_frame_idx)); |
| 108 | if (frame_sp) |
| 109 | frame_sp->ChangePC(pc); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 110 | else |
| 111 | m_thread.ClearStackFrames (); |
| 112 | } |
| 113 | return success; |
| 114 | } |
| 115 | |
| 116 | uint64_t |
| 117 | RegisterContext::GetSP(uint64_t fail_value) |
| 118 | { |
| 119 | uint32_t reg = ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_SP); |
| 120 | return ReadRegisterAsUnsigned (reg, fail_value); |
| 121 | } |
| 122 | |
| 123 | bool |
| 124 | RegisterContext::SetSP(uint64_t sp) |
| 125 | { |
| 126 | uint32_t reg = ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_SP); |
| 127 | return WriteRegisterFromUnsigned (reg, sp); |
| 128 | } |
| 129 | |
| 130 | uint64_t |
| 131 | RegisterContext::GetFP(uint64_t fail_value) |
| 132 | { |
| 133 | uint32_t reg = ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_FP); |
| 134 | return ReadRegisterAsUnsigned (reg, fail_value); |
| 135 | } |
| 136 | |
| 137 | bool |
| 138 | RegisterContext::SetFP(uint64_t fp) |
| 139 | { |
| 140 | uint32_t reg = ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_FP); |
| 141 | return WriteRegisterFromUnsigned (reg, fp); |
| 142 | } |
| 143 | |
| 144 | uint64_t |
| 145 | RegisterContext::GetReturnAddress (uint64_t fail_value) |
| 146 | { |
| 147 | uint32_t reg = ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_RA); |
| 148 | return ReadRegisterAsUnsigned (reg, fail_value); |
| 149 | } |
| 150 | |
| 151 | uint64_t |
| 152 | RegisterContext::GetFlags (uint64_t fail_value) |
| 153 | { |
| 154 | uint32_t reg = ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_FLAGS); |
| 155 | return ReadRegisterAsUnsigned (reg, fail_value); |
| 156 | } |
| 157 | |
| 158 | |
| 159 | uint64_t |
| 160 | RegisterContext::ReadRegisterAsUnsigned (uint32_t reg, uint64_t fail_value) |
| 161 | { |
| 162 | if (reg != LLDB_INVALID_REGNUM) |
Greg Clayton | 2f085c6 | 2011-05-15 01:25:55 +0000 | [diff] [blame] | 163 | return ReadRegisterAsUnsigned (GetRegisterInfoAtIndex (reg), fail_value); |
| 164 | return fail_value; |
| 165 | } |
| 166 | |
| 167 | uint64_t |
| 168 | RegisterContext::ReadRegisterAsUnsigned (const RegisterInfo *reg_info, uint64_t fail_value) |
| 169 | { |
| 170 | if (reg_info) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 171 | { |
Greg Clayton | 2f085c6 | 2011-05-15 01:25:55 +0000 | [diff] [blame] | 172 | RegisterValue value; |
| 173 | if (ReadRegister (reg_info, value)) |
| 174 | return value.GetAsUInt64(); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 175 | } |
| 176 | return fail_value; |
| 177 | } |
| 178 | |
| 179 | bool |
| 180 | RegisterContext::WriteRegisterFromUnsigned (uint32_t reg, uint64_t uval) |
| 181 | { |
| 182 | if (reg == LLDB_INVALID_REGNUM) |
| 183 | return false; |
Greg Clayton | 2f085c6 | 2011-05-15 01:25:55 +0000 | [diff] [blame] | 184 | return WriteRegisterFromUnsigned (GetRegisterInfoAtIndex (reg), uval); |
| 185 | } |
| 186 | |
| 187 | bool |
| 188 | RegisterContext::WriteRegisterFromUnsigned (const RegisterInfo *reg_info, uint64_t uval) |
| 189 | { |
Greg Clayton | 061b79d | 2011-05-09 20:18:18 +0000 | [diff] [blame] | 190 | if (reg_info) |
| 191 | { |
| 192 | RegisterValue value; |
| 193 | if (value.SetUInt(uval, reg_info->byte_size)) |
| 194 | return WriteRegister (reg_info, value); |
| 195 | } |
| 196 | return false; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 197 | } |
| 198 | |
Jim Ingham | f59388a | 2012-09-14 02:14:15 +0000 | [diff] [blame] | 199 | bool |
| 200 | RegisterContext::CopyFromRegisterContext (lldb::RegisterContextSP context) |
| 201 | { |
| 202 | uint32_t num_register_sets = context->GetRegisterSetCount(); |
| 203 | // We don't know that two threads have the same register context, so require the threads to be the same. |
| 204 | if (context->GetThreadID() != GetThreadID()) |
| 205 | return false; |
| 206 | |
| 207 | if (num_register_sets != GetRegisterSetCount()) |
| 208 | return false; |
| 209 | |
| 210 | RegisterContextSP frame_zero_context = m_thread.GetRegisterContext(); |
| 211 | |
| 212 | for (uint32_t set_idx = 0; set_idx < num_register_sets; ++set_idx) |
| 213 | { |
| 214 | const RegisterSet * const reg_set = GetRegisterSet(set_idx); |
| 215 | |
| 216 | const uint32_t num_registers = reg_set->num_registers; |
| 217 | for (uint32_t reg_idx = 0; reg_idx < num_registers; ++reg_idx) |
| 218 | { |
| 219 | const uint32_t reg = reg_set->registers[reg_idx]; |
| 220 | const RegisterInfo *reg_info = GetRegisterInfoAtIndex(reg); |
| 221 | if (!reg_info || reg_info->value_regs) |
| 222 | continue; |
| 223 | RegisterValue reg_value; |
| 224 | |
| 225 | // If we can reconstruct the register from the frame we are copying from, then do so, otherwise |
| 226 | // use the value from frame 0. |
| 227 | if (context->ReadRegister(reg_info, reg_value)) |
| 228 | { |
| 229 | WriteRegister(reg_info, reg_value); |
| 230 | } |
| 231 | else if (frame_zero_context->ReadRegister(reg_info, reg_value)) |
| 232 | { |
| 233 | WriteRegister(reg_info, reg_value); |
| 234 | } |
| 235 | } |
| 236 | } |
| 237 | return true; |
| 238 | } |
| 239 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 240 | lldb::tid_t |
| 241 | RegisterContext::GetThreadID() const |
| 242 | { |
| 243 | return m_thread.GetID(); |
| 244 | } |
| 245 | |
| 246 | uint32_t |
| 247 | RegisterContext::NumSupportedHardwareBreakpoints () |
| 248 | { |
| 249 | return 0; |
| 250 | } |
| 251 | |
| 252 | uint32_t |
| 253 | RegisterContext::SetHardwareBreakpoint (lldb::addr_t addr, size_t size) |
| 254 | { |
| 255 | return LLDB_INVALID_INDEX32; |
| 256 | } |
| 257 | |
| 258 | bool |
| 259 | RegisterContext::ClearHardwareBreakpoint (uint32_t hw_idx) |
| 260 | { |
| 261 | return false; |
| 262 | } |
| 263 | |
| 264 | |
| 265 | uint32_t |
| 266 | RegisterContext::NumSupportedHardwareWatchpoints () |
| 267 | { |
| 268 | return 0; |
| 269 | } |
| 270 | |
| 271 | uint32_t |
| 272 | RegisterContext::SetHardwareWatchpoint (lldb::addr_t addr, size_t size, bool read, bool write) |
| 273 | { |
| 274 | return LLDB_INVALID_INDEX32; |
| 275 | } |
| 276 | |
| 277 | bool |
| 278 | RegisterContext::ClearHardwareWatchpoint (uint32_t hw_index) |
| 279 | { |
| 280 | return false; |
| 281 | } |
| 282 | |
| 283 | bool |
| 284 | RegisterContext::HardwareSingleStep (bool enable) |
| 285 | { |
| 286 | return false; |
| 287 | } |
| 288 | |
Greg Clayton | 061b79d | 2011-05-09 20:18:18 +0000 | [diff] [blame] | 289 | Error |
| 290 | RegisterContext::ReadRegisterValueFromMemory (const RegisterInfo *reg_info, |
| 291 | lldb::addr_t src_addr, |
| 292 | uint32_t src_len, |
| 293 | RegisterValue ®_value) |
| 294 | { |
| 295 | Error error; |
| 296 | if (reg_info == NULL) |
| 297 | { |
| 298 | error.SetErrorString ("invalid register info argument."); |
| 299 | return error; |
| 300 | } |
| 301 | |
| 302 | |
| 303 | // Moving from addr into a register |
| 304 | // |
| 305 | // Case 1: src_len == dst_len |
| 306 | // |
| 307 | // |AABBCCDD| Address contents |
| 308 | // |AABBCCDD| Register contents |
| 309 | // |
| 310 | // Case 2: src_len > dst_len |
| 311 | // |
| 312 | // Error! (The register should always be big enough to hold the data) |
| 313 | // |
| 314 | // Case 3: src_len < dst_len |
| 315 | // |
| 316 | // |AABB| Address contents |
| 317 | // |AABB0000| Register contents [on little-endian hardware] |
| 318 | // |0000AABB| Register contents [on big-endian hardware] |
| 319 | if (src_len > RegisterValue::kMaxRegisterByteSize) |
| 320 | { |
| 321 | error.SetErrorString ("register too small to receive memory data"); |
| 322 | return error; |
| 323 | } |
| 324 | |
| 325 | const uint32_t dst_len = reg_info->byte_size; |
| 326 | |
| 327 | if (src_len > dst_len) |
| 328 | { |
| 329 | error.SetErrorStringWithFormat("%u bytes is too big to store in register %s (%u bytes)", src_len, reg_info->name, dst_len); |
| 330 | return error; |
| 331 | } |
| 332 | |
Greg Clayton | f4124de | 2012-02-21 00:09:25 +0000 | [diff] [blame] | 333 | ProcessSP process_sp (m_thread.GetProcess()); |
| 334 | if (process_sp) |
Greg Clayton | 061b79d | 2011-05-09 20:18:18 +0000 | [diff] [blame] | 335 | { |
Greg Clayton | f4124de | 2012-02-21 00:09:25 +0000 | [diff] [blame] | 336 | uint8_t src[RegisterValue::kMaxRegisterByteSize]; |
| 337 | |
| 338 | // Read the memory |
| 339 | const uint32_t bytes_read = process_sp->ReadMemory (src_addr, src, src_len, error); |
| 340 | |
| 341 | // Make sure the memory read succeeded... |
| 342 | if (bytes_read != src_len) |
Greg Clayton | 061b79d | 2011-05-09 20:18:18 +0000 | [diff] [blame] | 343 | { |
Greg Clayton | f4124de | 2012-02-21 00:09:25 +0000 | [diff] [blame] | 344 | if (error.Success()) |
| 345 | { |
| 346 | // This might happen if we read _some_ bytes but not all |
| 347 | error.SetErrorStringWithFormat("read %u of %u bytes", bytes_read, src_len); |
| 348 | } |
| 349 | return error; |
Greg Clayton | 061b79d | 2011-05-09 20:18:18 +0000 | [diff] [blame] | 350 | } |
Greg Clayton | f4124de | 2012-02-21 00:09:25 +0000 | [diff] [blame] | 351 | |
| 352 | // We now have a memory buffer that contains the part or all of the register |
| 353 | // value. Set the register value using this memory data. |
| 354 | // TODO: we might need to add a parameter to this function in case the byte |
| 355 | // order of the memory data doesn't match the process. For now we are assuming |
| 356 | // they are the same. |
| 357 | reg_value.SetFromMemoryData (reg_info, |
| 358 | src, |
| 359 | src_len, |
| 360 | process_sp->GetByteOrder(), |
| 361 | error); |
Greg Clayton | 061b79d | 2011-05-09 20:18:18 +0000 | [diff] [blame] | 362 | } |
Greg Clayton | f4124de | 2012-02-21 00:09:25 +0000 | [diff] [blame] | 363 | else |
| 364 | error.SetErrorString("invalid process"); |
| 365 | |
Greg Clayton | 061b79d | 2011-05-09 20:18:18 +0000 | [diff] [blame] | 366 | return error; |
| 367 | } |
| 368 | |
| 369 | Error |
| 370 | RegisterContext::WriteRegisterValueToMemory (const RegisterInfo *reg_info, |
| 371 | lldb::addr_t dst_addr, |
| 372 | uint32_t dst_len, |
| 373 | const RegisterValue ®_value) |
| 374 | { |
| 375 | |
| 376 | uint8_t dst[RegisterValue::kMaxRegisterByteSize]; |
| 377 | |
| 378 | Error error; |
| 379 | |
Greg Clayton | f4124de | 2012-02-21 00:09:25 +0000 | [diff] [blame] | 380 | ProcessSP process_sp (m_thread.GetProcess()); |
| 381 | if (process_sp) |
Greg Clayton | 061b79d | 2011-05-09 20:18:18 +0000 | [diff] [blame] | 382 | { |
Greg Clayton | f4124de | 2012-02-21 00:09:25 +0000 | [diff] [blame] | 383 | |
| 384 | // TODO: we might need to add a parameter to this function in case the byte |
| 385 | // order of the memory data doesn't match the process. For now we are assuming |
| 386 | // they are the same. |
| 387 | |
| 388 | const uint32_t bytes_copied = reg_value.GetAsMemoryData (reg_info, |
| 389 | dst, |
| 390 | dst_len, |
| 391 | process_sp->GetByteOrder(), |
| 392 | error); |
| 393 | |
| 394 | if (error.Success()) |
Greg Clayton | 061b79d | 2011-05-09 20:18:18 +0000 | [diff] [blame] | 395 | { |
Greg Clayton | f4124de | 2012-02-21 00:09:25 +0000 | [diff] [blame] | 396 | if (bytes_copied == 0) |
Greg Clayton | 061b79d | 2011-05-09 20:18:18 +0000 | [diff] [blame] | 397 | { |
Greg Clayton | f4124de | 2012-02-21 00:09:25 +0000 | [diff] [blame] | 398 | error.SetErrorString("byte copy failed."); |
| 399 | } |
| 400 | else |
| 401 | { |
| 402 | const uint32_t bytes_written = process_sp->WriteMemory (dst_addr, dst, bytes_copied, error); |
| 403 | if (bytes_written != bytes_copied) |
Greg Clayton | 061b79d | 2011-05-09 20:18:18 +0000 | [diff] [blame] | 404 | { |
Greg Clayton | f4124de | 2012-02-21 00:09:25 +0000 | [diff] [blame] | 405 | if (error.Success()) |
| 406 | { |
| 407 | // This might happen if we read _some_ bytes but not all |
| 408 | error.SetErrorStringWithFormat("only wrote %u of %u bytes", bytes_written, bytes_copied); |
| 409 | } |
Greg Clayton | 061b79d | 2011-05-09 20:18:18 +0000 | [diff] [blame] | 410 | } |
| 411 | } |
| 412 | } |
| 413 | } |
Greg Clayton | f4124de | 2012-02-21 00:09:25 +0000 | [diff] [blame] | 414 | else |
| 415 | error.SetErrorString("invalid process"); |
Greg Clayton | 061b79d | 2011-05-09 20:18:18 +0000 | [diff] [blame] | 416 | |
| 417 | return error; |
| 418 | |
| 419 | } |
| 420 | |
Greg Clayton | 289afcb | 2012-02-18 05:35:26 +0000 | [diff] [blame] | 421 | TargetSP |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 422 | RegisterContext::CalculateTarget () |
| 423 | { |
| 424 | return m_thread.CalculateTarget(); |
| 425 | } |
| 426 | |
| 427 | |
Greg Clayton | 289afcb | 2012-02-18 05:35:26 +0000 | [diff] [blame] | 428 | ProcessSP |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 429 | RegisterContext::CalculateProcess () |
| 430 | { |
| 431 | return m_thread.CalculateProcess (); |
| 432 | } |
| 433 | |
Greg Clayton | 289afcb | 2012-02-18 05:35:26 +0000 | [diff] [blame] | 434 | ThreadSP |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 435 | RegisterContext::CalculateThread () |
| 436 | { |
Greg Clayton | 289afcb | 2012-02-18 05:35:26 +0000 | [diff] [blame] | 437 | return m_thread.shared_from_this(); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 438 | } |
| 439 | |
Greg Clayton | 289afcb | 2012-02-18 05:35:26 +0000 | [diff] [blame] | 440 | StackFrameSP |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 441 | RegisterContext::CalculateStackFrame () |
| 442 | { |
Greg Clayton | 08d7d3a | 2011-01-06 22:15:06 +0000 | [diff] [blame] | 443 | // Register contexts might belong to many frames if we have inlined |
| 444 | // functions inside a frame since all inlined functions share the |
| 445 | // same registers, so we can't definitively say which frame we come from... |
Greg Clayton | 289afcb | 2012-02-18 05:35:26 +0000 | [diff] [blame] | 446 | return StackFrameSP(); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 447 | } |
| 448 | |
| 449 | void |
Greg Clayton | a830adb | 2010-10-04 01:05:56 +0000 | [diff] [blame] | 450 | RegisterContext::CalculateExecutionContext (ExecutionContext &exe_ctx) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 451 | { |
Greg Clayton | 08d7d3a | 2011-01-06 22:15:06 +0000 | [diff] [blame] | 452 | m_thread.CalculateExecutionContext (exe_ctx); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 453 | } |
| 454 | |
| 455 | |
Jason Molenda | 3a4ea24 | 2010-09-10 07:49:16 +0000 | [diff] [blame] | 456 | bool |
Jason Molenda | 8280cbe | 2010-10-25 11:12:07 +0000 | [diff] [blame] | 457 | RegisterContext::ConvertBetweenRegisterKinds (int source_rk, uint32_t source_regnum, int target_rk, uint32_t& target_regnum) |
Jason Molenda | 3a4ea24 | 2010-09-10 07:49:16 +0000 | [diff] [blame] | 458 | { |
| 459 | const uint32_t num_registers = GetRegisterCount(); |
| 460 | for (uint32_t reg = 0; reg < num_registers; ++reg) |
| 461 | { |
| 462 | const RegisterInfo * reg_info = GetRegisterInfoAtIndex (reg); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 463 | |
Jason Molenda | 3a4ea24 | 2010-09-10 07:49:16 +0000 | [diff] [blame] | 464 | if (reg_info->kinds[source_rk] == source_regnum) |
| 465 | { |
| 466 | target_regnum = reg_info->kinds[target_rk]; |
| 467 | if (target_regnum == LLDB_INVALID_REGNUM) |
| 468 | { |
| 469 | return false; |
| 470 | } |
| 471 | else |
| 472 | { |
| 473 | return true; |
| 474 | } |
| 475 | } |
| 476 | } |
| 477 | return false; |
| 478 | } |
Jason Molenda | 8280cbe | 2010-10-25 11:12:07 +0000 | [diff] [blame] | 479 | |
Greg Clayton | 061b79d | 2011-05-09 20:18:18 +0000 | [diff] [blame] | 480 | //bool |
| 481 | //RegisterContext::ReadRegisterValue (uint32_t reg, Scalar &value) |
| 482 | //{ |
| 483 | // DataExtractor data; |
| 484 | // if (!ReadRegisterBytes (reg, data)) |
| 485 | // return false; |
| 486 | // |
| 487 | // const RegisterInfo *reg_info = GetRegisterInfoAtIndex (reg); |
| 488 | // uint32_t offset = 0; |
| 489 | // switch (reg_info->encoding) |
| 490 | // { |
| 491 | // case eEncodingInvalid: |
| 492 | // case eEncodingVector: |
| 493 | // break; |
| 494 | // |
| 495 | // case eEncodingUint: |
| 496 | // switch (reg_info->byte_size) |
| 497 | // { |
| 498 | // case 1: |
| 499 | // { |
| 500 | // value = data.GetU8 (&offset); |
| 501 | // return true; |
| 502 | // } |
| 503 | // case 2: |
| 504 | // { |
| 505 | // value = data.GetU16 (&offset); |
| 506 | // return true; |
| 507 | // } |
| 508 | // case 4: |
| 509 | // { |
| 510 | // value = data.GetU32 (&offset); |
| 511 | // return true; |
| 512 | // } |
| 513 | // case 8: |
| 514 | // { |
| 515 | // value = data.GetU64 (&offset); |
| 516 | // return true; |
| 517 | // } |
| 518 | // } |
| 519 | // break; |
| 520 | // case eEncodingSint: |
| 521 | // switch (reg_info->byte_size) |
| 522 | // { |
| 523 | // case 1: |
| 524 | // { |
| 525 | // int8_t v; |
| 526 | // if (data.ExtractBytes (0, sizeof (int8_t), lldb::endian::InlHostByteOrder(), &v) != sizeof (int8_t)) |
| 527 | // return false; |
| 528 | // value = v; |
| 529 | // return true; |
| 530 | // } |
| 531 | // case 2: |
| 532 | // { |
| 533 | // int16_t v; |
| 534 | // if (data.ExtractBytes (0, sizeof (int16_t), lldb::endian::InlHostByteOrder(), &v) != sizeof (int16_t)) |
| 535 | // return false; |
| 536 | // value = v; |
| 537 | // return true; |
| 538 | // } |
| 539 | // case 4: |
| 540 | // { |
| 541 | // int32_t v; |
| 542 | // if (data.ExtractBytes (0, sizeof (int32_t), lldb::endian::InlHostByteOrder(), &v) != sizeof (int32_t)) |
| 543 | // return false; |
| 544 | // value = v; |
| 545 | // return true; |
| 546 | // } |
| 547 | // case 8: |
| 548 | // { |
| 549 | // int64_t v; |
| 550 | // if (data.ExtractBytes (0, sizeof (int64_t), lldb::endian::InlHostByteOrder(), &v) != sizeof (int64_t)) |
| 551 | // return false; |
| 552 | // value = v; |
| 553 | // return true; |
| 554 | // } |
| 555 | // } |
| 556 | // break; |
| 557 | // case eEncodingIEEE754: |
| 558 | // switch (reg_info->byte_size) |
| 559 | // { |
| 560 | // case sizeof (float): |
| 561 | // { |
| 562 | // float v; |
| 563 | // if (data.ExtractBytes (0, sizeof (float), lldb::endian::InlHostByteOrder(), &v) != sizeof (float)) |
| 564 | // return false; |
| 565 | // value = v; |
| 566 | // return true; |
| 567 | // } |
| 568 | // case sizeof (double): |
| 569 | // { |
| 570 | // double v; |
| 571 | // if (data.ExtractBytes (0, sizeof (double), lldb::endian::InlHostByteOrder(), &v) != sizeof (double)) |
| 572 | // return false; |
| 573 | // value = v; |
| 574 | // return true; |
| 575 | // } |
| 576 | // case sizeof (long double): |
| 577 | // { |
| 578 | // double v; |
| 579 | // if (data.ExtractBytes (0, sizeof (long double), lldb::endian::InlHostByteOrder(), &v) != sizeof (long double)) |
| 580 | // return false; |
| 581 | // value = v; |
| 582 | // return true; |
| 583 | // } |
| 584 | // } |
| 585 | // break; |
| 586 | // } |
| 587 | // return false; |
| 588 | //} |
| 589 | // |
| 590 | //bool |
| 591 | //RegisterContext::WriteRegisterValue (uint32_t reg, const Scalar &value) |
| 592 | //{ |
| 593 | // DataExtractor data; |
| 594 | // if (!value.IsValid()) |
| 595 | // return false; |
| 596 | // if (!value.GetData (data)) |
| 597 | // return false; |
| 598 | // |
| 599 | // return WriteRegisterBytes (reg, data); |
| 600 | //} |