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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 #include <math.h> // for isnan. | 5 #include <math.h> // for isnan. |
| 6 #include <setjmp.h> | 6 #include <setjmp.h> |
| 7 #include <stdlib.h> | 7 #include <stdlib.h> |
| 8 | 8 |
| 9 #include "vm/globals.h" | 9 #include "vm/globals.h" |
| 10 #if defined(TARGET_ARCH_ARM) | 10 #if defined(TARGET_ARCH_ARM) |
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| 287 bool is_optimized, | 287 bool is_optimized, |
| 288 bool is_inlined) { | 288 bool is_inlined) { |
| 289 const Script& script = Script::Handle(function.script()); | 289 const Script& script = Script::Handle(function.script()); |
| 290 const String& func_name = String::Handle(function.QualifiedUserVisibleName()); | 290 const String& func_name = String::Handle(function.QualifiedUserVisibleName()); |
| 291 const String& url = String::Handle(script.url()); | 291 const String& url = String::Handle(script.url()); |
| 292 intptr_t line = -1; | 292 intptr_t line = -1; |
| 293 intptr_t column = -1; | 293 intptr_t column = -1; |
| 294 if (token_pos >= 0) { | 294 if (token_pos >= 0) { |
| 295 script.GetTokenLocation(token_pos, &line, &column); | 295 script.GetTokenLocation(token_pos, &line, &column); |
| 296 } | 296 } |
| 297 OS::Print("pc=0x%"Px" fp=0x%"Px" sp=0x%"Px" %s%s (%s:%"Pd":%"Pd")\n", | 297 OS::Print("pc=0x%" Px " fp=0x%" Px " sp=0x%" Px " %s%s (%s:%" Pd ":%" Pd ")\n" , |
|
siva
2013/08/20 19:54:51
OS::Print("pc=0x%" Px " fp=0x%" Px " sp=0x%" Px "
Jacob
2013/08/20 20:32:15
Done.
| |
| 298 pc, fp, sp, | 298 pc, fp, sp, |
| 299 is_optimized ? (is_inlined ? "inlined " : "optimized ") : "", | 299 is_optimized ? (is_inlined ? "inlined " : "optimized ") : "", |
| 300 func_name.ToCString(), | 300 func_name.ToCString(), |
| 301 url.ToCString(), | 301 url.ToCString(), |
| 302 line, column); | 302 line, column); |
| 303 } | 303 } |
| 304 | 304 |
| 305 | 305 |
| 306 void SimulatorDebugger::PrintBacktrace() { | 306 void SimulatorDebugger::PrintBacktrace() { |
| 307 StackFrameIterator frames(sim_->get_register(FP), | 307 StackFrameIterator frames(sim_->get_register(FP), |
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| 337 true, true); | 337 true, true); |
| 338 } | 338 } |
| 339 } | 339 } |
| 340 // Print the optimized inlining frame below. | 340 // Print the optimized inlining frame below. |
| 341 } | 341 } |
| 342 PrintDartFrame(frame->pc(), frame->fp(), frame->sp(), | 342 PrintDartFrame(frame->pc(), frame->fp(), frame->sp(), |
| 343 function, | 343 function, |
| 344 GetApproximateTokenIndex(code, frame->pc()), | 344 GetApproximateTokenIndex(code, frame->pc()), |
| 345 code.is_optimized(), false); | 345 code.is_optimized(), false); |
| 346 } else { | 346 } else { |
| 347 OS::Print("pc=0x%"Px" fp=0x%"Px" sp=0x%"Px" %s frame\n", | 347 OS::Print("pc=0x%" Px " fp=0x%" Px " sp=0x%" Px " %s frame\n", |
| 348 frame->pc(), frame->fp(), frame->sp(), | 348 frame->pc(), frame->fp(), frame->sp(), |
| 349 frame->IsEntryFrame() ? "entry" : | 349 frame->IsEntryFrame() ? "entry" : |
| 350 frame->IsExitFrame() ? "exit" : | 350 frame->IsExitFrame() ? "exit" : |
| 351 frame->IsStubFrame() ? "stub" : "invalid"); | 351 frame->IsStubFrame() ? "stub" : "invalid"); |
| 352 } | 352 } |
| 353 frame = frames.NextFrame(); | 353 frame = frames.NextFrame(); |
| 354 } | 354 } |
| 355 } | 355 } |
| 356 | 356 |
| 357 | 357 |
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| 415 arg2[ARG_SIZE] = 0; | 415 arg2[ARG_SIZE] = 0; |
| 416 | 416 |
| 417 // Undo all set breakpoints while running in the debugger shell. This will | 417 // Undo all set breakpoints while running in the debugger shell. This will |
| 418 // make them invisible to all commands. | 418 // make them invisible to all commands. |
| 419 UndoBreakpoints(); | 419 UndoBreakpoints(); |
| 420 | 420 |
| 421 while (!done) { | 421 while (!done) { |
| 422 if (last_pc != sim_->get_pc()) { | 422 if (last_pc != sim_->get_pc()) { |
| 423 last_pc = sim_->get_pc(); | 423 last_pc = sim_->get_pc(); |
| 424 if (Simulator::IsIllegalAddress(last_pc)) { | 424 if (Simulator::IsIllegalAddress(last_pc)) { |
| 425 OS::Print("pc is out of bounds: 0x%"Px"\n", last_pc); | 425 OS::Print("pc is out of bounds: 0x%" Px "\n", last_pc); |
| 426 } else { | 426 } else { |
| 427 Disassembler::Disassemble(last_pc, last_pc + Instr::kInstrSize); | 427 Disassembler::Disassemble(last_pc, last_pc + Instr::kInstrSize); |
| 428 } | 428 } |
| 429 } | 429 } |
| 430 char* line = ReadLine("sim> "); | 430 char* line = ReadLine("sim> "); |
| 431 if (line == NULL) { | 431 if (line == NULL) { |
| 432 FATAL("ReadLine failed"); | 432 FATAL("ReadLine failed"); |
| 433 } else { | 433 } else { |
| 434 // Use sscanf to parse the individual parts of the command line. At the | 434 // Use sscanf to parse the individual parts of the command line. At the |
| 435 // moment no command expects more than two parameters. | 435 // moment no command expects more than two parameters. |
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| 969 return dregisters_[reg]; | 969 return dregisters_[reg]; |
| 970 } | 970 } |
| 971 | 971 |
| 972 | 972 |
| 973 void Simulator::HandleIllegalAccess(uword addr, Instr* instr) { | 973 void Simulator::HandleIllegalAccess(uword addr, Instr* instr) { |
| 974 uword fault_pc = get_pc(); | 974 uword fault_pc = get_pc(); |
| 975 // The debugger will not be able to single step past this instruction, but | 975 // The debugger will not be able to single step past this instruction, but |
| 976 // it will be possible to disassemble the code and inspect registers. | 976 // it will be possible to disassemble the code and inspect registers. |
| 977 char buffer[128]; | 977 char buffer[128]; |
| 978 snprintf(buffer, sizeof(buffer), | 978 snprintf(buffer, sizeof(buffer), |
| 979 "illegal memory access at 0x%"Px", pc=0x%"Px"\n", | 979 "illegal memory access at 0x%" Px ", pc=0x%" Px "\n", |
| 980 addr, fault_pc); | 980 addr, fault_pc); |
| 981 SimulatorDebugger dbg(this); | 981 SimulatorDebugger dbg(this); |
| 982 dbg.Stop(instr, buffer); | 982 dbg.Stop(instr, buffer); |
| 983 // The debugger will return control in non-interactive mode. | 983 // The debugger will return control in non-interactive mode. |
| 984 FATAL("Cannot continue execution after illegal memory access."); | 984 FATAL("Cannot continue execution after illegal memory access."); |
| 985 } | 985 } |
| 986 | 986 |
| 987 | 987 |
| 988 // Processor versions prior to ARMv7 could not do unaligned reads and writes. | 988 // Processor versions prior to ARMv7 could not do unaligned reads and writes. |
| 989 // On some ARM platforms an interrupt is caused. On others it does a funky | 989 // On some ARM platforms an interrupt is caused. On others it does a funky |
| 990 // rotation thing. However, from version v7, unaligned access is supported. | 990 // rotation thing. However, from version v7, unaligned access is supported. |
| 991 // Note that simulator runs have the runtime system running directly on the host | 991 // Note that simulator runs have the runtime system running directly on the host |
| 992 // system and only generated code is executed in the simulator. Since the host | 992 // system and only generated code is executed in the simulator. Since the host |
| 993 // is typically IA32 we will get the correct ARMv7-like behaviour on unaligned | 993 // is typically IA32 we will get the correct ARMv7-like behaviour on unaligned |
| 994 // accesses, but we should actually not generate code accessing unaligned data, | 994 // accesses, but we should actually not generate code accessing unaligned data, |
| 995 // so we still want to know and abort if we encounter such code. | 995 // so we still want to know and abort if we encounter such code. |
| 996 void Simulator::UnalignedAccess(const char* msg, uword addr, Instr* instr) { | 996 void Simulator::UnalignedAccess(const char* msg, uword addr, Instr* instr) { |
| 997 // The debugger will not be able to single step past this instruction, but | 997 // The debugger will not be able to single step past this instruction, but |
| 998 // it will be possible to disassemble the code and inspect registers. | 998 // it will be possible to disassemble the code and inspect registers. |
| 999 char buffer[64]; | 999 char buffer[64]; |
| 1000 snprintf(buffer, sizeof(buffer), | 1000 snprintf(buffer, sizeof(buffer), |
| 1001 "unaligned %s at 0x%"Px", pc=%p\n", msg, addr, instr); | 1001 "unaligned %s at 0x%" Px ", pc=%p\n", msg, addr, instr); |
| 1002 SimulatorDebugger dbg(this); | 1002 SimulatorDebugger dbg(this); |
| 1003 dbg.Stop(instr, buffer); | 1003 dbg.Stop(instr, buffer); |
| 1004 // The debugger will return control in non-interactive mode. | 1004 // The debugger will return control in non-interactive mode. |
| 1005 FATAL("Cannot continue execution after unaligned access."); | 1005 FATAL("Cannot continue execution after unaligned access."); |
| 1006 } | 1006 } |
| 1007 | 1007 |
| 1008 | 1008 |
| 1009 void Simulator::UnimplementedInstruction(Instr* instr) { | 1009 void Simulator::UnimplementedInstruction(Instr* instr) { |
| 1010 char buffer[64]; | 1010 char buffer[64]; |
| 1011 snprintf(buffer, sizeof(buffer), "Unimplemented instruction: pc=%p\n", instr); | 1011 snprintf(buffer, sizeof(buffer), "Unimplemented instruction: pc=%p\n", instr); |
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| 1499 int svc = instr->SvcField(); | 1499 int svc = instr->SvcField(); |
| 1500 switch (svc) { | 1500 switch (svc) { |
| 1501 case kRedirectionSvcCode: { | 1501 case kRedirectionSvcCode: { |
| 1502 SimulatorSetjmpBuffer buffer(this); | 1502 SimulatorSetjmpBuffer buffer(this); |
| 1503 | 1503 |
| 1504 if (!setjmp(buffer.buffer_)) { | 1504 if (!setjmp(buffer.buffer_)) { |
| 1505 int32_t saved_lr = get_register(LR); | 1505 int32_t saved_lr = get_register(LR); |
| 1506 Redirection* redirection = Redirection::FromSvcInstruction(instr); | 1506 Redirection* redirection = Redirection::FromSvcInstruction(instr); |
| 1507 uword external = redirection->external_function(); | 1507 uword external = redirection->external_function(); |
| 1508 if (FLAG_trace_sim) { | 1508 if (FLAG_trace_sim) { |
| 1509 OS::Print("Call to host function at 0x%"Pd"\n", external); | 1509 OS::Print("Call to host function at 0x%" Pd "\n", external); |
| 1510 } | 1510 } |
| 1511 | 1511 |
| 1512 if ((redirection->call_kind() == kRuntimeCall) || | 1512 if ((redirection->call_kind() == kRuntimeCall) || |
| 1513 (redirection->call_kind() == kBootstrapNativeCall) || | 1513 (redirection->call_kind() == kBootstrapNativeCall) || |
| 1514 (redirection->call_kind() == kNativeCall)) { | 1514 (redirection->call_kind() == kNativeCall)) { |
| 1515 // Set the top_exit_frame_info of this simulator to the native stack. | 1515 // Set the top_exit_frame_info of this simulator to the native stack. |
| 1516 set_top_exit_frame_info(reinterpret_cast<uword>(&buffer)); | 1516 set_top_exit_frame_info(reinterpret_cast<uword>(&buffer)); |
| 1517 } | 1517 } |
| 1518 if (redirection->call_kind() == kRuntimeCall) { | 1518 if (redirection->call_kind() == kRuntimeCall) { |
| 1519 NativeArguments arguments; | 1519 NativeArguments arguments; |
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| 3667 set_register(kExceptionObjectReg, bit_cast<int32_t>(raw_exception)); | 3667 set_register(kExceptionObjectReg, bit_cast<int32_t>(raw_exception)); |
| 3668 set_register(kStackTraceObjectReg, bit_cast<int32_t>(raw_stacktrace)); | 3668 set_register(kStackTraceObjectReg, bit_cast<int32_t>(raw_stacktrace)); |
| 3669 buf->Longjmp(); | 3669 buf->Longjmp(); |
| 3670 } | 3670 } |
| 3671 | 3671 |
| 3672 } // namespace dart | 3672 } // namespace dart |
| 3673 | 3673 |
| 3674 #endif // !defined(HOST_ARCH_ARM) | 3674 #endif // !defined(HOST_ARCH_ARM) |
| 3675 | 3675 |
| 3676 #endif // defined TARGET_ARCH_ARM | 3676 #endif // defined TARGET_ARCH_ARM |
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