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Side by Side Diff: src/simulator-arm.cc

Issue 1935: New static flags system (Closed)
Patch Set: Merge, again. Created 12 years, 3 months ago
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1 // Copyright 2008 the V8 project authors. All rights reserved. 1 // Copyright 2008 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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38 // Only build the simulator if not compiling for real ARM hardware. 38 // Only build the simulator if not compiling for real ARM hardware.
39 namespace assembler { namespace arm { 39 namespace assembler { namespace arm {
40 40
41 using ::v8::internal::Object; 41 using ::v8::internal::Object;
42 using ::v8::internal::PrintF; 42 using ::v8::internal::PrintF;
43 using ::v8::internal::OS; 43 using ::v8::internal::OS;
44 using ::v8::internal::ReadLine; 44 using ::v8::internal::ReadLine;
45 using ::v8::internal::DeleteArray; 45 using ::v8::internal::DeleteArray;
46 46
47 47
48 DEFINE_bool(trace_sim, false, "trace simulator execution");
49
50
51 // The Debugger class is used by the simulator while debugging simulated ARM 48 // The Debugger class is used by the simulator while debugging simulated ARM
52 // code. 49 // code.
53 class Debugger { 50 class Debugger {
54 public: 51 public:
55 explicit Debugger(Simulator* sim); 52 explicit Debugger(Simulator* sim);
56 ~Debugger(); 53 ~Debugger();
57 54
58 void Stop(Instr* instr); 55 void Stop(Instr* instr);
59 void Debug(); 56 void Debug();
60 57
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1386 break; 1383 break;
1387 } 1384 }
1388 } 1385 }
1389 } 1386 }
1390 if (!pc_modified_) { 1387 if (!pc_modified_) {
1391 set_register(pc, reinterpret_cast<int32_t>(instr) + Instr::kInstrSize); 1388 set_register(pc, reinterpret_cast<int32_t>(instr) + Instr::kInstrSize);
1392 } 1389 }
1393 } 1390 }
1394 1391
1395 1392
1396 DEFINE_int(stop_sim_at, 0, "Simulator stop after x number of instructions");
1397
1398
1399 // 1393 //
1400 void Simulator::execute() { 1394 void Simulator::execute() {
1401 // Get the PC to simulate. Cannot use the accessor here as we need the 1395 // Get the PC to simulate. Cannot use the accessor here as we need the
1402 // raw PC value and not the one used as input to arithmetic instructions. 1396 // raw PC value and not the one used as input to arithmetic instructions.
1403 int program_counter = get_pc(); 1397 int program_counter = get_pc();
1404 1398
1405 if (FLAG_stop_sim_at == 0) { 1399 if (FLAG_stop_sim_at == 0) {
1406 // Fast version of the dispatch loop without checking whether the simulator 1400 // Fast version of the dispatch loop without checking whether the simulator
1407 // should be stopping at a particular executed instruction. 1401 // should be stopping at a particular executed instruction.
1408 while (program_counter != end_sim_pc) { 1402 while (program_counter != end_sim_pc) {
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1494 set_register(r10, r10_val); 1488 set_register(r10, r10_val);
1495 set_register(r11, r11_val); 1489 set_register(r11, r11_val);
1496 1490
1497 int result = get_register(r0); 1491 int result = get_register(r0);
1498 return reinterpret_cast<Object*>(result); 1492 return reinterpret_cast<Object*>(result);
1499 } 1493 }
1500 1494
1501 } } // namespace assembler::arm 1495 } } // namespace assembler::arm
1502 1496
1503 #endif // !defined(__arm__) 1497 #endif // !defined(__arm__)
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