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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_MIPS) | 10 #if defined(TARGET_ARCH_MIPS) |
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| 307 arg2[ARG_SIZE] = 0; | 307 arg2[ARG_SIZE] = 0; |
| 308 | 308 |
| 309 // Undo all set breakpoints while running in the debugger shell. This will | 309 // Undo all set breakpoints while running in the debugger shell. This will |
| 310 // make them invisible to all commands. | 310 // make them invisible to all commands. |
| 311 UndoBreakpoints(); | 311 UndoBreakpoints(); |
| 312 | 312 |
| 313 while (!done) { | 313 while (!done) { |
| 314 if (last_pc != sim_->get_pc()) { | 314 if (last_pc != sim_->get_pc()) { |
| 315 last_pc = sim_->get_pc(); | 315 last_pc = sim_->get_pc(); |
| 316 if (Simulator::IsIllegalAddress(last_pc)) { | 316 if (Simulator::IsIllegalAddress(last_pc)) { |
| 317 OS::Print("pc is out of bounds: 0x%"Px"\n", last_pc); | 317 OS::Print("pc is out of bounds: 0x%" Px "\n", last_pc); |
| 318 } else { | 318 } else { |
| 319 Disassembler::Disassemble(last_pc, last_pc + Instr::kInstrSize); | 319 Disassembler::Disassemble(last_pc, last_pc + Instr::kInstrSize); |
| 320 } | 320 } |
| 321 } | 321 } |
| 322 char* line = ReadLine("sim> "); | 322 char* line = ReadLine("sim> "); |
| 323 if (line == NULL) { | 323 if (line == NULL) { |
| 324 FATAL("ReadLine failed"); | 324 FATAL("ReadLine failed"); |
| 325 } else { | 325 } else { |
| 326 // Use sscanf to parse the individual parts of the command line. At the | 326 // Use sscanf to parse the individual parts of the command line. At the |
| 327 // moment no command expects more than two parameters. | 327 // moment no command expects more than two parameters. |
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| 811 FATAL("Cannot continue execution after unimplemented instruction."); | 811 FATAL("Cannot continue execution after unimplemented instruction."); |
| 812 } | 812 } |
| 813 | 813 |
| 814 | 814 |
| 815 void Simulator::HandleIllegalAccess(uword addr, Instr* instr) { | 815 void Simulator::HandleIllegalAccess(uword addr, Instr* instr) { |
| 816 uword fault_pc = get_pc(); | 816 uword fault_pc = get_pc(); |
| 817 // The debugger will not be able to single step past this instruction, but | 817 // The debugger will not be able to single step past this instruction, but |
| 818 // it will be possible to disassemble the code and inspect registers. | 818 // it will be possible to disassemble the code and inspect registers. |
| 819 char buffer[128]; | 819 char buffer[128]; |
| 820 snprintf(buffer, sizeof(buffer), | 820 snprintf(buffer, sizeof(buffer), |
| 821 "illegal memory access at 0x%"Px", pc=0x%"Px"\n", | 821 "illegal memory access at 0x%" Px ", pc=0x%" Px "\n", |
| 822 addr, fault_pc); | 822 addr, fault_pc); |
| 823 SimulatorDebugger dbg(this); | 823 SimulatorDebugger dbg(this); |
| 824 dbg.Stop(instr, buffer); | 824 dbg.Stop(instr, buffer); |
| 825 // The debugger will return control in non-interactive mode. | 825 // The debugger will return control in non-interactive mode. |
| 826 FATAL("Cannot continue execution after illegal memory access."); | 826 FATAL("Cannot continue execution after illegal memory access."); |
| 827 } | 827 } |
| 828 | 828 |
| 829 | 829 |
| 830 void Simulator::UnalignedAccess(const char* msg, uword addr, Instr* instr) { | 830 void Simulator::UnalignedAccess(const char* msg, uword addr, Instr* instr) { |
| 831 // The debugger will not be able to single step past this instruction, but | 831 // The debugger will not be able to single step past this instruction, but |
| 832 // it will be possible to disassemble the code and inspect registers. | 832 // it will be possible to disassemble the code and inspect registers. |
| 833 char buffer[128]; | 833 char buffer[128]; |
| 834 snprintf(buffer, sizeof(buffer), | 834 snprintf(buffer, sizeof(buffer), |
| 835 "pc=%p, unaligned %s at 0x%"Px"\n", instr, msg, addr); | 835 "pc=%p, unaligned %s at 0x%" Px "\n", instr, msg, addr); |
| 836 SimulatorDebugger dbg(this); | 836 SimulatorDebugger dbg(this); |
| 837 dbg.Stop(instr, buffer); | 837 dbg.Stop(instr, buffer); |
| 838 // The debugger will return control in non-interactive mode. | 838 // The debugger will return control in non-interactive mode. |
| 839 FATAL("Cannot continue execution after unaligned access."); | 839 FATAL("Cannot continue execution after unaligned access."); |
| 840 } | 840 } |
| 841 | 841 |
| 842 | 842 |
| 843 // Returns the top of the stack area to enable checking for stack pointer | 843 // Returns the top of the stack area to enable checking for stack pointer |
| 844 // validity. | 844 // validity. |
| 845 uword Simulator::StackTop() const { | 845 uword Simulator::StackTop() const { |
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| 998 UnimplementedInstruction(instr); | 998 UnimplementedInstruction(instr); |
| 999 } | 999 } |
| 1000 } else if (instr->BreakCodeField() == Instr::kRedirectCode) { | 1000 } else if (instr->BreakCodeField() == Instr::kRedirectCode) { |
| 1001 SimulatorSetjmpBuffer buffer(this); | 1001 SimulatorSetjmpBuffer buffer(this); |
| 1002 | 1002 |
| 1003 if (!setjmp(buffer.buffer_)) { | 1003 if (!setjmp(buffer.buffer_)) { |
| 1004 int32_t saved_ra = get_register(RA); | 1004 int32_t saved_ra = get_register(RA); |
| 1005 Redirection* redirection = Redirection::FromBreakInstruction(instr); | 1005 Redirection* redirection = Redirection::FromBreakInstruction(instr); |
| 1006 uword external = redirection->external_function(); | 1006 uword external = redirection->external_function(); |
| 1007 if (FLAG_trace_sim) { | 1007 if (FLAG_trace_sim) { |
| 1008 OS::Print("Call to host function at 0x%"Pd"\n", external); | 1008 OS::Print("Call to host function at 0x%" Pd "\n", external); |
| 1009 } | 1009 } |
| 1010 | 1010 |
| 1011 if ((redirection->call_kind() == kRuntimeCall) || | 1011 if ((redirection->call_kind() == kRuntimeCall) || |
| 1012 (redirection->call_kind() == kBootstrapNativeCall) || | 1012 (redirection->call_kind() == kBootstrapNativeCall) || |
| 1013 (redirection->call_kind() == kNativeCall)) { | 1013 (redirection->call_kind() == kNativeCall)) { |
| 1014 // Set the top_exit_frame_info of this simulator to the native stack. | 1014 // Set the top_exit_frame_info of this simulator to the native stack. |
| 1015 set_top_exit_frame_info(reinterpret_cast<uword>(&buffer)); | 1015 set_top_exit_frame_info(reinterpret_cast<uword>(&buffer)); |
| 1016 } | 1016 } |
| 1017 if (redirection->call_kind() == kRuntimeCall) { | 1017 if (redirection->call_kind() == kRuntimeCall) { |
| 1018 NativeArguments arguments; | 1018 NativeArguments arguments; |
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| 2245 set_register(kExceptionObjectReg, bit_cast<int32_t>(raw_exception)); | 2245 set_register(kExceptionObjectReg, bit_cast<int32_t>(raw_exception)); |
| 2246 set_register(kStackTraceObjectReg, bit_cast<int32_t>(raw_stacktrace)); | 2246 set_register(kStackTraceObjectReg, bit_cast<int32_t>(raw_stacktrace)); |
| 2247 buf->Longjmp(); | 2247 buf->Longjmp(); |
| 2248 } | 2248 } |
| 2249 | 2249 |
| 2250 } // namespace dart | 2250 } // namespace dart |
| 2251 | 2251 |
| 2252 #endif // !defined(HOST_ARCH_MIPS) | 2252 #endif // !defined(HOST_ARCH_MIPS) |
| 2253 | 2253 |
| 2254 #endif // defined TARGET_ARCH_MIPS | 2254 #endif // defined TARGET_ARCH_MIPS |
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