| File: | tools/lldb/source/Plugins/Process/Utility/StopInfoMachException.cpp |
| Warning: | line 490, column 11 Value stored to 'is_actual_breakpoint' is never read |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | //===-- StopInfoMachException.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 "StopInfoMachException.h" |
| 11 | |
| 12 | // C Includes |
| 13 | // C++ Includes |
| 14 | // Other libraries and framework includes |
| 15 | // Project includes |
| 16 | #include "lldb/Breakpoint/Watchpoint.h" |
| 17 | #include "lldb/Symbol/Symbol.h" |
| 18 | #include "lldb/Target/DynamicLoader.h" |
| 19 | #include "lldb/Target/ExecutionContext.h" |
| 20 | #include "lldb/Target/Process.h" |
| 21 | #include "lldb/Target/RegisterContext.h" |
| 22 | #include "lldb/Target/Target.h" |
| 23 | #include "lldb/Target/Thread.h" |
| 24 | #include "lldb/Target/ThreadPlan.h" |
| 25 | #include "lldb/Target/UnixSignals.h" |
| 26 | #include "lldb/Utility/StreamString.h" |
| 27 | |
| 28 | using namespace lldb; |
| 29 | using namespace lldb_private; |
| 30 | |
| 31 | const char *StopInfoMachException::GetDescription() { |
| 32 | if (m_description.empty() && m_value != 0) { |
| 33 | ExecutionContext exe_ctx(m_thread_wp.lock()); |
| 34 | Target *target = exe_ctx.GetTargetPtr(); |
| 35 | const llvm::Triple::ArchType cpu = |
| 36 | target ? target->GetArchitecture().GetMachine() |
| 37 | : llvm::Triple::UnknownArch; |
| 38 | |
| 39 | const char *exc_desc = NULL__null; |
| 40 | const char *code_label = "code"; |
| 41 | const char *code_desc = NULL__null; |
| 42 | const char *subcode_label = "subcode"; |
| 43 | const char *subcode_desc = NULL__null; |
| 44 | switch (m_value) { |
| 45 | case 1: // EXC_BAD_ACCESS |
| 46 | exc_desc = "EXC_BAD_ACCESS"; |
| 47 | subcode_label = "address"; |
| 48 | switch (cpu) { |
| 49 | case llvm::Triple::x86: |
| 50 | case llvm::Triple::x86_64: |
| 51 | switch (m_exc_code) { |
| 52 | case 0xd: |
| 53 | code_desc = "EXC_I386_GPFLT"; |
| 54 | m_exc_data_count = 1; |
| 55 | break; |
| 56 | } |
| 57 | break; |
| 58 | case llvm::Triple::arm: |
| 59 | case llvm::Triple::thumb: |
| 60 | switch (m_exc_code) { |
| 61 | case 0x101: |
| 62 | code_desc = "EXC_ARM_DA_ALIGN"; |
| 63 | break; |
| 64 | case 0x102: |
| 65 | code_desc = "EXC_ARM_DA_DEBUG"; |
| 66 | break; |
| 67 | } |
| 68 | break; |
| 69 | |
| 70 | case llvm::Triple::ppc: |
| 71 | case llvm::Triple::ppc64: |
| 72 | switch (m_exc_code) { |
| 73 | case 0x101: |
| 74 | code_desc = "EXC_PPC_VM_PROT_READ"; |
| 75 | break; |
| 76 | case 0x102: |
| 77 | code_desc = "EXC_PPC_BADSPACE"; |
| 78 | break; |
| 79 | case 0x103: |
| 80 | code_desc = "EXC_PPC_UNALIGNED"; |
| 81 | break; |
| 82 | } |
| 83 | break; |
| 84 | |
| 85 | default: |
| 86 | break; |
| 87 | } |
| 88 | break; |
| 89 | |
| 90 | case 2: // EXC_BAD_INSTRUCTION |
| 91 | exc_desc = "EXC_BAD_INSTRUCTION"; |
| 92 | switch (cpu) { |
| 93 | case llvm::Triple::x86: |
| 94 | case llvm::Triple::x86_64: |
| 95 | if (m_exc_code == 1) |
| 96 | code_desc = "EXC_I386_INVOP"; |
| 97 | break; |
| 98 | |
| 99 | case llvm::Triple::ppc: |
| 100 | case llvm::Triple::ppc64: |
| 101 | switch (m_exc_code) { |
| 102 | case 1: |
| 103 | code_desc = "EXC_PPC_INVALID_SYSCALL"; |
| 104 | break; |
| 105 | case 2: |
| 106 | code_desc = "EXC_PPC_UNIPL_INST"; |
| 107 | break; |
| 108 | case 3: |
| 109 | code_desc = "EXC_PPC_PRIVINST"; |
| 110 | break; |
| 111 | case 4: |
| 112 | code_desc = "EXC_PPC_PRIVREG"; |
| 113 | break; |
| 114 | case 5: |
| 115 | code_desc = "EXC_PPC_TRACE"; |
| 116 | break; |
| 117 | case 6: |
| 118 | code_desc = "EXC_PPC_PERFMON"; |
| 119 | break; |
| 120 | } |
| 121 | break; |
| 122 | |
| 123 | case llvm::Triple::arm: |
| 124 | case llvm::Triple::thumb: |
| 125 | if (m_exc_code == 1) |
| 126 | code_desc = "EXC_ARM_UNDEFINED"; |
| 127 | break; |
| 128 | |
| 129 | default: |
| 130 | break; |
| 131 | } |
| 132 | break; |
| 133 | |
| 134 | case 3: // EXC_ARITHMETIC |
| 135 | exc_desc = "EXC_ARITHMETIC"; |
| 136 | switch (cpu) { |
| 137 | case llvm::Triple::x86: |
| 138 | case llvm::Triple::x86_64: |
| 139 | switch (m_exc_code) { |
| 140 | case 1: |
| 141 | code_desc = "EXC_I386_DIV"; |
| 142 | break; |
| 143 | case 2: |
| 144 | code_desc = "EXC_I386_INTO"; |
| 145 | break; |
| 146 | case 3: |
| 147 | code_desc = "EXC_I386_NOEXT"; |
| 148 | break; |
| 149 | case 4: |
| 150 | code_desc = "EXC_I386_EXTOVR"; |
| 151 | break; |
| 152 | case 5: |
| 153 | code_desc = "EXC_I386_EXTERR"; |
| 154 | break; |
| 155 | case 6: |
| 156 | code_desc = "EXC_I386_EMERR"; |
| 157 | break; |
| 158 | case 7: |
| 159 | code_desc = "EXC_I386_BOUND"; |
| 160 | break; |
| 161 | case 8: |
| 162 | code_desc = "EXC_I386_SSEEXTERR"; |
| 163 | break; |
| 164 | } |
| 165 | break; |
| 166 | |
| 167 | case llvm::Triple::ppc: |
| 168 | case llvm::Triple::ppc64: |
| 169 | switch (m_exc_code) { |
| 170 | case 1: |
| 171 | code_desc = "EXC_PPC_OVERFLOW"; |
| 172 | break; |
| 173 | case 2: |
| 174 | code_desc = "EXC_PPC_ZERO_DIVIDE"; |
| 175 | break; |
| 176 | case 3: |
| 177 | code_desc = "EXC_PPC_FLT_INEXACT"; |
| 178 | break; |
| 179 | case 4: |
| 180 | code_desc = "EXC_PPC_FLT_ZERO_DIVIDE"; |
| 181 | break; |
| 182 | case 5: |
| 183 | code_desc = "EXC_PPC_FLT_UNDERFLOW"; |
| 184 | break; |
| 185 | case 6: |
| 186 | code_desc = "EXC_PPC_FLT_OVERFLOW"; |
| 187 | break; |
| 188 | case 7: |
| 189 | code_desc = "EXC_PPC_FLT_NOT_A_NUMBER"; |
| 190 | break; |
| 191 | } |
| 192 | break; |
| 193 | |
| 194 | default: |
| 195 | break; |
| 196 | } |
| 197 | break; |
| 198 | |
| 199 | case 4: // EXC_EMULATION |
| 200 | exc_desc = "EXC_EMULATION"; |
| 201 | break; |
| 202 | |
| 203 | case 5: // EXC_SOFTWARE |
| 204 | exc_desc = "EXC_SOFTWARE"; |
| 205 | if (m_exc_code == 0x10003) { |
| 206 | subcode_desc = "EXC_SOFT_SIGNAL"; |
| 207 | subcode_label = "signo"; |
| 208 | } |
| 209 | break; |
| 210 | |
| 211 | case 6: // EXC_BREAKPOINT |
| 212 | { |
| 213 | exc_desc = "EXC_BREAKPOINT"; |
| 214 | switch (cpu) { |
| 215 | case llvm::Triple::x86: |
| 216 | case llvm::Triple::x86_64: |
| 217 | switch (m_exc_code) { |
| 218 | case 1: |
| 219 | code_desc = "EXC_I386_SGL"; |
| 220 | break; |
| 221 | case 2: |
| 222 | code_desc = "EXC_I386_BPT"; |
| 223 | break; |
| 224 | } |
| 225 | break; |
| 226 | |
| 227 | case llvm::Triple::ppc: |
| 228 | case llvm::Triple::ppc64: |
| 229 | switch (m_exc_code) { |
| 230 | case 1: |
| 231 | code_desc = "EXC_PPC_BREAKPOINT"; |
| 232 | break; |
| 233 | } |
| 234 | break; |
| 235 | |
| 236 | case llvm::Triple::arm: |
| 237 | case llvm::Triple::thumb: |
| 238 | switch (m_exc_code) { |
| 239 | case 0x101: |
| 240 | code_desc = "EXC_ARM_DA_ALIGN"; |
| 241 | break; |
| 242 | case 0x102: |
| 243 | code_desc = "EXC_ARM_DA_DEBUG"; |
| 244 | break; |
| 245 | case 1: |
| 246 | code_desc = "EXC_ARM_BREAKPOINT"; |
| 247 | break; |
| 248 | // FIXME temporary workaround, exc_code 0 does not really mean |
| 249 | // EXC_ARM_BREAKPOINT |
| 250 | case 0: |
| 251 | code_desc = "EXC_ARM_BREAKPOINT"; |
| 252 | break; |
| 253 | } |
| 254 | break; |
| 255 | |
| 256 | default: |
| 257 | break; |
| 258 | } |
| 259 | } break; |
| 260 | |
| 261 | case 7: |
| 262 | exc_desc = "EXC_SYSCALL"; |
| 263 | break; |
| 264 | |
| 265 | case 8: |
| 266 | exc_desc = "EXC_MACH_SYSCALL"; |
| 267 | break; |
| 268 | |
| 269 | case 9: |
| 270 | exc_desc = "EXC_RPC_ALERT"; |
| 271 | break; |
| 272 | |
| 273 | case 10: |
| 274 | exc_desc = "EXC_CRASH"; |
| 275 | break; |
| 276 | case 11: |
| 277 | exc_desc = "EXC_RESOURCE"; |
| 278 | break; |
| 279 | case 12: |
| 280 | exc_desc = "EXC_GUARD"; |
| 281 | break; |
| 282 | } |
| 283 | |
| 284 | StreamString strm; |
| 285 | |
| 286 | if (exc_desc) |
| 287 | strm.PutCString(exc_desc); |
| 288 | else |
| 289 | strm.Printf("EXC_??? (%" PRIu64"l" "u" ")", m_value); |
| 290 | |
| 291 | if (m_exc_data_count >= 1) { |
| 292 | if (code_desc) |
| 293 | strm.Printf(" (%s=%s", code_label, code_desc); |
| 294 | else |
| 295 | strm.Printf(" (%s=%" PRIu64"l" "u", code_label, m_exc_code); |
| 296 | } |
| 297 | |
| 298 | if (m_exc_data_count >= 2) { |
| 299 | if (subcode_desc) |
| 300 | strm.Printf(", %s=%s", subcode_label, subcode_desc); |
| 301 | else |
| 302 | strm.Printf(", %s=0x%" PRIx64"l" "x", subcode_label, m_exc_subcode); |
| 303 | } |
| 304 | |
| 305 | if (m_exc_data_count > 0) |
| 306 | strm.PutChar(')'); |
| 307 | |
| 308 | m_description = strm.GetString(); |
| 309 | } |
| 310 | return m_description.c_str(); |
| 311 | } |
| 312 | |
| 313 | StopInfoSP StopInfoMachException::CreateStopReasonWithMachException( |
| 314 | Thread &thread, uint32_t exc_type, uint32_t exc_data_count, |
| 315 | uint64_t exc_code, uint64_t exc_sub_code, uint64_t exc_sub_sub_code, |
| 316 | bool pc_already_adjusted, bool adjust_pc_if_needed) { |
| 317 | if (exc_type != 0) { |
| 318 | uint32_t pc_decrement = 0; |
| 319 | ExecutionContext exe_ctx(thread.shared_from_this()); |
| 320 | Target *target = exe_ctx.GetTargetPtr(); |
| 321 | const llvm::Triple::ArchType cpu = |
| 322 | target ? target->GetArchitecture().GetMachine() |
| 323 | : llvm::Triple::UnknownArch; |
| 324 | |
| 325 | switch (exc_type) { |
| 326 | case 1: // EXC_BAD_ACCESS |
| 327 | break; |
| 328 | |
| 329 | case 2: // EXC_BAD_INSTRUCTION |
| 330 | switch (cpu) { |
| 331 | case llvm::Triple::ppc: |
| 332 | case llvm::Triple::ppc64: |
| 333 | switch (exc_code) { |
| 334 | case 1: // EXC_PPC_INVALID_SYSCALL |
| 335 | case 2: // EXC_PPC_UNIPL_INST |
| 336 | case 3: // EXC_PPC_PRIVINST |
| 337 | case 4: // EXC_PPC_PRIVREG |
| 338 | break; |
| 339 | case 5: // EXC_PPC_TRACE |
| 340 | return StopInfo::CreateStopReasonToTrace(thread); |
| 341 | case 6: // EXC_PPC_PERFMON |
| 342 | break; |
| 343 | } |
| 344 | break; |
| 345 | |
| 346 | default: |
| 347 | break; |
| 348 | } |
| 349 | break; |
| 350 | |
| 351 | case 3: // EXC_ARITHMETIC |
| 352 | case 4: // EXC_EMULATION |
| 353 | break; |
| 354 | |
| 355 | case 5: // EXC_SOFTWARE |
| 356 | if (exc_code == 0x10003) // EXC_SOFT_SIGNAL |
| 357 | { |
| 358 | if (exc_sub_code == 5) { |
| 359 | // On MacOSX, a SIGTRAP can signify that a process has called |
| 360 | // exec, so we should check with our dynamic loader to verify. |
| 361 | ProcessSP process_sp(thread.GetProcess()); |
| 362 | if (process_sp) { |
| 363 | DynamicLoader *dynamic_loader = process_sp->GetDynamicLoader(); |
| 364 | if (dynamic_loader && dynamic_loader->ProcessDidExec()) { |
| 365 | // The program was re-exec'ed |
| 366 | return StopInfo::CreateStopReasonWithExec(thread); |
| 367 | } |
| 368 | // if (!process_did_exec) |
| 369 | // { |
| 370 | // // We have a SIGTRAP, make sure we |
| 371 | // didn't exec by checking |
| 372 | // // for the PC being at |
| 373 | // "_dyld_start"... |
| 374 | // lldb::StackFrameSP frame_sp |
| 375 | // (thread.GetStackFrameAtIndex(0)); |
| 376 | // if (frame_sp) |
| 377 | // { |
| 378 | // const Symbol *symbol = |
| 379 | // frame_sp->GetSymbolContext(eSymbolContextSymbol).symbol; |
| 380 | // if (symbol) |
| 381 | // { |
| 382 | // if (symbol->GetName() == |
| 383 | // ConstString("_dyld_start")) |
| 384 | // process_did_exec = true; |
| 385 | // } |
| 386 | // } |
| 387 | // } |
| 388 | } |
| 389 | } |
| 390 | return StopInfo::CreateStopReasonWithSignal(thread, exc_sub_code); |
| 391 | } |
| 392 | break; |
| 393 | |
| 394 | case 6: // EXC_BREAKPOINT |
| 395 | { |
| 396 | bool is_actual_breakpoint = false; |
| 397 | bool is_trace_if_actual_breakpoint_missing = false; |
| 398 | switch (cpu) { |
| 399 | case llvm::Triple::x86: |
| 400 | case llvm::Triple::x86_64: |
| 401 | if (exc_code == 1) // EXC_I386_SGL |
| 402 | { |
| 403 | if (!exc_sub_code) { |
| 404 | // This looks like a plain trap. |
| 405 | // Have to check if there is a breakpoint here as well. When you |
| 406 | // single-step onto a trap, |
| 407 | // the single step stops you not to trap. Since we also do that |
| 408 | // check below, let's just use |
| 409 | // that logic. |
| 410 | is_actual_breakpoint = true; |
| 411 | is_trace_if_actual_breakpoint_missing = true; |
| 412 | } else { |
| 413 | |
| 414 | // It's a watchpoint, then. |
| 415 | // The exc_sub_code indicates the data break address. |
| 416 | lldb::WatchpointSP wp_sp; |
| 417 | if (target) |
| 418 | wp_sp = target->GetWatchpointList().FindByAddress( |
| 419 | (lldb::addr_t)exc_sub_code); |
| 420 | if (wp_sp && wp_sp->IsEnabled()) { |
| 421 | // Debugserver may piggyback the hardware index of the fired |
| 422 | // watchpoint in the exception data. |
| 423 | // Set the hardware index if that's the case. |
| 424 | if (exc_data_count >= 3) |
| 425 | wp_sp->SetHardwareIndex((uint32_t)exc_sub_sub_code); |
| 426 | return StopInfo::CreateStopReasonWithWatchpointID(thread, |
| 427 | wp_sp->GetID()); |
| 428 | } |
| 429 | } |
| 430 | } else if (exc_code == 2 || // EXC_I386_BPT |
| 431 | exc_code == 3) // EXC_I386_BPTFLT |
| 432 | { |
| 433 | // KDP returns EXC_I386_BPTFLT for trace breakpoints |
| 434 | if (exc_code == 3) |
| 435 | is_trace_if_actual_breakpoint_missing = true; |
| 436 | |
| 437 | is_actual_breakpoint = true; |
| 438 | if (!pc_already_adjusted) |
| 439 | pc_decrement = 1; |
| 440 | } |
| 441 | break; |
| 442 | |
| 443 | case llvm::Triple::ppc: |
| 444 | case llvm::Triple::ppc64: |
| 445 | is_actual_breakpoint = exc_code == 1; // EXC_PPC_BREAKPOINT |
| 446 | break; |
| 447 | |
| 448 | case llvm::Triple::arm: |
| 449 | case llvm::Triple::thumb: |
| 450 | if (exc_code == 0x102) // EXC_ARM_DA_DEBUG |
| 451 | { |
| 452 | // It's a watchpoint, then, if the exc_sub_code indicates a |
| 453 | // known/enabled |
| 454 | // data break address from our watchpoint list. |
| 455 | lldb::WatchpointSP wp_sp; |
| 456 | if (target) |
| 457 | wp_sp = target->GetWatchpointList().FindByAddress( |
| 458 | (lldb::addr_t)exc_sub_code); |
| 459 | if (wp_sp && wp_sp->IsEnabled()) { |
| 460 | // Debugserver may piggyback the hardware index of the fired |
| 461 | // watchpoint in the exception data. |
| 462 | // Set the hardware index if that's the case. |
| 463 | if (exc_data_count >= 3) |
| 464 | wp_sp->SetHardwareIndex((uint32_t)exc_sub_sub_code); |
| 465 | return StopInfo::CreateStopReasonWithWatchpointID(thread, |
| 466 | wp_sp->GetID()); |
| 467 | } else { |
| 468 | is_actual_breakpoint = true; |
| 469 | is_trace_if_actual_breakpoint_missing = true; |
| 470 | } |
| 471 | } else if (exc_code == 1) // EXC_ARM_BREAKPOINT |
| 472 | { |
| 473 | is_actual_breakpoint = true; |
| 474 | is_trace_if_actual_breakpoint_missing = true; |
| 475 | } else if (exc_code == 0) // FIXME not EXC_ARM_BREAKPOINT but a kernel |
| 476 | // is currently returning this so accept it as |
| 477 | // indicating a breakpoint until the kernel is |
| 478 | // fixed |
| 479 | { |
| 480 | is_actual_breakpoint = true; |
| 481 | is_trace_if_actual_breakpoint_missing = true; |
| 482 | } |
| 483 | break; |
| 484 | |
| 485 | case llvm::Triple::aarch64: { |
| 486 | if (exc_code == 1 && exc_sub_code == 0) // EXC_ARM_BREAKPOINT |
| 487 | { |
| 488 | // This is hit when we single instruction step aka MDSCR_EL1 SS bit 0 |
| 489 | // is set |
| 490 | is_actual_breakpoint = false; |
Value stored to 'is_actual_breakpoint' is never read | |
| 491 | is_trace_if_actual_breakpoint_missing = true; |
| 492 | } |
| 493 | if (exc_code == 0x102) // EXC_ARM_DA_DEBUG |
| 494 | { |
| 495 | // It's a watchpoint, then, if the exc_sub_code indicates a |
| 496 | // known/enabled |
| 497 | // data break address from our watchpoint list. |
| 498 | lldb::WatchpointSP wp_sp; |
| 499 | if (target) |
| 500 | wp_sp = target->GetWatchpointList().FindByAddress( |
| 501 | (lldb::addr_t)exc_sub_code); |
| 502 | if (wp_sp && wp_sp->IsEnabled()) { |
| 503 | // Debugserver may piggyback the hardware index of the fired |
| 504 | // watchpoint in the exception data. |
| 505 | // Set the hardware index if that's the case. |
| 506 | if (exc_data_count >= 3) |
| 507 | wp_sp->SetHardwareIndex((uint32_t)exc_sub_sub_code); |
| 508 | return StopInfo::CreateStopReasonWithWatchpointID(thread, |
| 509 | wp_sp->GetID()); |
| 510 | } |
| 511 | // EXC_ARM_DA_DEBUG seems to be reused for EXC_BREAKPOINT as well as |
| 512 | // EXC_BAD_ACCESS |
| 513 | if (thread.GetTemporaryResumeState() == eStateStepping) |
| 514 | return StopInfo::CreateStopReasonToTrace(thread); |
| 515 | } |
| 516 | // It looks like exc_sub_code has the 4 bytes of the instruction that |
| 517 | // triggered the |
| 518 | // exception, i.e. our breakpoint opcode |
| 519 | is_actual_breakpoint = exc_code == 1; |
| 520 | break; |
| 521 | } |
| 522 | |
| 523 | default: |
| 524 | break; |
| 525 | } |
| 526 | |
| 527 | if (is_actual_breakpoint) { |
| 528 | RegisterContextSP reg_ctx_sp(thread.GetRegisterContext()); |
| 529 | addr_t pc = reg_ctx_sp->GetPC() - pc_decrement; |
| 530 | |
| 531 | ProcessSP process_sp(thread.CalculateProcess()); |
| 532 | |
| 533 | lldb::BreakpointSiteSP bp_site_sp; |
| 534 | if (process_sp) |
| 535 | bp_site_sp = process_sp->GetBreakpointSiteList().FindByAddress(pc); |
| 536 | if (bp_site_sp && bp_site_sp->IsEnabled()) { |
| 537 | // Update the PC if we were asked to do so, but only do |
| 538 | // so if we find a breakpoint that we know about cause |
| 539 | // this could be a trap instruction in the code |
| 540 | if (pc_decrement > 0 && adjust_pc_if_needed) |
| 541 | reg_ctx_sp->SetPC(pc); |
| 542 | |
| 543 | // If the breakpoint is for this thread, then we'll report the hit, |
| 544 | // but if it is for another thread, |
| 545 | // we can just report no reason. We don't need to worry about |
| 546 | // stepping over the breakpoint here, that |
| 547 | // will be taken care of when the thread resumes and notices that |
| 548 | // there's a breakpoint under the pc. |
| 549 | // If we have an operating system plug-in, we might have set a thread |
| 550 | // specific breakpoint using the |
| 551 | // operating system thread ID, so we can't make any assumptions about |
| 552 | // the thread ID so we must always |
| 553 | // report the breakpoint regardless of the thread. |
| 554 | if (bp_site_sp->ValidForThisThread(&thread) || |
| 555 | thread.GetProcess()->GetOperatingSystem() != NULL__null) |
| 556 | return StopInfo::CreateStopReasonWithBreakpointSiteID( |
| 557 | thread, bp_site_sp->GetID()); |
| 558 | else if (is_trace_if_actual_breakpoint_missing) |
| 559 | return StopInfo::CreateStopReasonToTrace(thread); |
| 560 | else |
| 561 | return StopInfoSP(); |
| 562 | } |
| 563 | |
| 564 | // Don't call this a trace if we weren't single stepping this thread. |
| 565 | if (is_trace_if_actual_breakpoint_missing && |
| 566 | thread.GetTemporaryResumeState() == eStateStepping) { |
| 567 | return StopInfo::CreateStopReasonToTrace(thread); |
| 568 | } |
| 569 | } |
| 570 | } break; |
| 571 | |
| 572 | case 7: // EXC_SYSCALL |
| 573 | case 8: // EXC_MACH_SYSCALL |
| 574 | case 9: // EXC_RPC_ALERT |
| 575 | case 10: // EXC_CRASH |
| 576 | break; |
| 577 | } |
| 578 | |
| 579 | return StopInfoSP(new StopInfoMachException( |
| 580 | thread, exc_type, exc_data_count, exc_code, exc_sub_code)); |
| 581 | } |
| 582 | return StopInfoSP(); |
| 583 | } |