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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_ARM) 9 #if defined(TARGET_ARCH_ARM)
10 10
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37 #define SScanF sscanf // NOLINT 37 #define SScanF sscanf // NOLINT
38 38
39 39
40 // SimulatorSetjmpBuffer are linked together, and the last created one 40 // SimulatorSetjmpBuffer are linked together, and the last created one
41 // is referenced by the Simulator. When an exception is thrown, the exception 41 // is referenced by the Simulator. When an exception is thrown, the exception
42 // runtime looks at where to jump and finds the corresponding 42 // runtime looks at where to jump and finds the corresponding
43 // SimulatorSetjmpBuffer based on the stack pointer of the exception handler. 43 // SimulatorSetjmpBuffer based on the stack pointer of the exception handler.
44 // The runtime then does a Longjmp on that buffer to return to the simulator. 44 // The runtime then does a Longjmp on that buffer to return to the simulator.
45 class SimulatorSetjmpBuffer { 45 class SimulatorSetjmpBuffer {
46 public: 46 public:
47 int Setjmp() { return setjmp(buffer_); }
48 void Longjmp() { 47 void Longjmp() {
49 // "This" is now the last setjmp buffer. 48 // "This" is now the last setjmp buffer.
50 simulator_->set_last_setjmp_buffer(this); 49 simulator_->set_last_setjmp_buffer(this);
51 longjmp(buffer_, 1); 50 longjmp(buffer_, 1);
52 } 51 }
53 52
54 explicit SimulatorSetjmpBuffer(Simulator* sim) { 53 explicit SimulatorSetjmpBuffer(Simulator* sim) {
55 simulator_ = sim; 54 simulator_ = sim;
56 link_ = sim->last_setjmp_buffer(); 55 link_ = sim->last_setjmp_buffer();
57 sim->set_last_setjmp_buffer(this); 56 sim->set_last_setjmp_buffer(this);
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1539 (redirection->call_kind() == kBootstrapNativeCall) || 1538 (redirection->call_kind() == kBootstrapNativeCall) ||
1540 (redirection->call_kind() == kNativeCall)) { 1539 (redirection->call_kind() == kNativeCall)) {
1541 // Set the top_exit_frame_info of this simulator to the native stack. 1540 // Set the top_exit_frame_info of this simulator to the native stack.
1542 set_top_exit_frame_info(Thread::GetCurrentStackPointer()); 1541 set_top_exit_frame_info(Thread::GetCurrentStackPointer());
1543 } 1542 }
1544 if (redirection->call_kind() == kRuntimeCall) { 1543 if (redirection->call_kind() == kRuntimeCall) {
1545 NativeArguments arguments; 1544 NativeArguments arguments;
1546 ASSERT(sizeof(NativeArguments) == 4*kWordSize); 1545 ASSERT(sizeof(NativeArguments) == 4*kWordSize);
1547 arguments.thread_ = reinterpret_cast<Thread*>(get_register(R0)); 1546 arguments.thread_ = reinterpret_cast<Thread*>(get_register(R0));
1548 arguments.argc_tag_ = get_register(R1); 1547 arguments.argc_tag_ = get_register(R1);
1549 arguments.argv_ = reinterpret_cast<RawObject*(*)[]>(get_register(R2)); 1548 arguments.argv_ = reinterpret_cast<RawObject**>(get_register(R2));
1550 arguments.retval_ = reinterpret_cast<RawObject**>(get_register(R3)); 1549 arguments.retval_ = reinterpret_cast<RawObject**>(get_register(R3));
1551 SimulatorRuntimeCall target = 1550 SimulatorRuntimeCall target =
1552 reinterpret_cast<SimulatorRuntimeCall>(external); 1551 reinterpret_cast<SimulatorRuntimeCall>(external);
1553 target(arguments); 1552 target(arguments);
1554 set_register(R0, icount_); // Zap result register from void function. 1553 set_register(R0, icount_); // Zap result register from void function.
1555 set_register(R1, icount_); 1554 set_register(R1, icount_);
1556 } else if (redirection->call_kind() == kLeafRuntimeCall) { 1555 } else if (redirection->call_kind() == kLeafRuntimeCall) {
1557 ASSERT((0 <= redirection->argument_count()) && 1556 ASSERT((0 <= redirection->argument_count()) &&
1558 (redirection->argument_count() <= 4)); 1557 (redirection->argument_count() <= 4));
1559 int32_t r0 = get_register(R0); 1558 int32_t r0 = get_register(R0);
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3908 set_register(kExceptionObjectReg, bit_cast<int32_t>(raw_exception)); 3907 set_register(kExceptionObjectReg, bit_cast<int32_t>(raw_exception));
3909 set_register(kStackTraceObjectReg, bit_cast<int32_t>(raw_stacktrace)); 3908 set_register(kStackTraceObjectReg, bit_cast<int32_t>(raw_stacktrace));
3910 buf->Longjmp(); 3909 buf->Longjmp();
3911 } 3910 }
3912 3911
3913 } // namespace dart 3912 } // namespace dart
3914 3913
3915 #endif // defined(USING_SIMULATOR) 3914 #endif // defined(USING_SIMULATOR)
3916 3915
3917 #endif // defined TARGET_ARCH_ARM 3916 #endif // defined TARGET_ARCH_ARM
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