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Issue 1858283002: Initial SIMDBC interpreter. (Closed) Base URL: git@github.com:dart-lang/sdk.git@master
Patch Set: Created 4 years, 8 months ago
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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 <setjmp.h> // NOLINT 5 #include <setjmp.h> // NOLINT
6 #include <stdlib.h> 6 #include <stdlib.h>
7 7
8 #include "vm/globals.h" 8 #include "vm/globals.h"
9 #if defined(TARGET_ARCH_MIPS) 9 #if defined(TARGET_ARCH_MIPS)
10 10
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36 #define SScanF sscanf // NOLINT 36 #define SScanF sscanf // NOLINT
37 37
38 38
39 // SimulatorSetjmpBuffer are linked together, and the last created one 39 // SimulatorSetjmpBuffer are linked together, and the last created one
40 // is referenced by the Simulator. When an exception is thrown, the exception 40 // is referenced by the Simulator. When an exception is thrown, the exception
41 // runtime looks at where to jump and finds the corresponding 41 // runtime looks at where to jump and finds the corresponding
42 // SimulatorSetjmpBuffer based on the stack pointer of the exception handler. 42 // SimulatorSetjmpBuffer based on the stack pointer of the exception handler.
43 // The runtime then does a Longjmp on that buffer to return to the simulator. 43 // The runtime then does a Longjmp on that buffer to return to the simulator.
44 class SimulatorSetjmpBuffer { 44 class SimulatorSetjmpBuffer {
45 public: 45 public:
46 int Setjmp() { return setjmp(buffer_); }
47 void Longjmp() { 46 void Longjmp() {
48 // "This" is now the last setjmp buffer. 47 // "This" is now the last setjmp buffer.
49 simulator_->set_last_setjmp_buffer(this); 48 simulator_->set_last_setjmp_buffer(this);
50 longjmp(buffer_, 1); 49 longjmp(buffer_, 1);
51 } 50 }
52 51
53 explicit SimulatorSetjmpBuffer(Simulator* sim) { 52 explicit SimulatorSetjmpBuffer(Simulator* sim) {
54 simulator_ = sim; 53 simulator_ = sim;
55 link_ = sim->last_setjmp_buffer(); 54 link_ = sim->last_setjmp_buffer();
56 sim->set_last_setjmp_buffer(this); 55 sim->set_last_setjmp_buffer(this);
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1250 (redirection->call_kind() == kBootstrapNativeCall) || 1249 (redirection->call_kind() == kBootstrapNativeCall) ||
1251 (redirection->call_kind() == kNativeCall)) { 1250 (redirection->call_kind() == kNativeCall)) {
1252 // Set the top_exit_frame_info of this simulator to the native stack. 1251 // Set the top_exit_frame_info of this simulator to the native stack.
1253 set_top_exit_frame_info(Thread::GetCurrentStackPointer()); 1252 set_top_exit_frame_info(Thread::GetCurrentStackPointer());
1254 } 1253 }
1255 if (redirection->call_kind() == kRuntimeCall) { 1254 if (redirection->call_kind() == kRuntimeCall) {
1256 NativeArguments arguments; 1255 NativeArguments arguments;
1257 ASSERT(sizeof(NativeArguments) == 4*kWordSize); 1256 ASSERT(sizeof(NativeArguments) == 4*kWordSize);
1258 arguments.thread_ = reinterpret_cast<Thread*>(get_register(A0)); 1257 arguments.thread_ = reinterpret_cast<Thread*>(get_register(A0));
1259 arguments.argc_tag_ = get_register(A1); 1258 arguments.argc_tag_ = get_register(A1);
1260 arguments.argv_ = reinterpret_cast<RawObject*(*)[]>(get_register(A2)); 1259 arguments.argv_ = reinterpret_cast<RawObject**>(get_register(A2));
1261 arguments.retval_ = reinterpret_cast<RawObject**>(get_register(A3)); 1260 arguments.retval_ = reinterpret_cast<RawObject**>(get_register(A3));
1262 SimulatorRuntimeCall target = 1261 SimulatorRuntimeCall target =
1263 reinterpret_cast<SimulatorRuntimeCall>(external); 1262 reinterpret_cast<SimulatorRuntimeCall>(external);
1264 target(arguments); 1263 target(arguments);
1265 set_register(V0, icount_); // Zap result registers from void function. 1264 set_register(V0, icount_); // Zap result registers from void function.
1266 set_register(V1, icount_); 1265 set_register(V1, icount_);
1267 } else if (redirection->call_kind() == kLeafRuntimeCall) { 1266 } else if (redirection->call_kind() == kLeafRuntimeCall) {
1268 int32_t a0 = get_register(A0); 1267 int32_t a0 = get_register(A0);
1269 int32_t a1 = get_register(A1); 1268 int32_t a1 = get_register(A1);
1270 int32_t a2 = get_register(A2); 1269 int32_t a2 = get_register(A2);
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2532 set_register(kExceptionObjectReg, bit_cast<int32_t>(raw_exception)); 2531 set_register(kExceptionObjectReg, bit_cast<int32_t>(raw_exception));
2533 set_register(kStackTraceObjectReg, bit_cast<int32_t>(raw_stacktrace)); 2532 set_register(kStackTraceObjectReg, bit_cast<int32_t>(raw_stacktrace));
2534 buf->Longjmp(); 2533 buf->Longjmp();
2535 } 2534 }
2536 2535
2537 } // namespace dart 2536 } // namespace dart
2538 2537
2539 #endif // defined(USING_SIMULATOR) 2538 #endif // defined(USING_SIMULATOR)
2540 2539
2541 #endif // defined TARGET_ARCH_MIPS 2540 #endif // defined TARGET_ARCH_MIPS
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