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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 "vm/globals.h" | 5 #include "vm/globals.h" |
6 #if defined(TARGET_ARCH_ARM) | 6 #if defined(TARGET_ARCH_ARM) |
7 | 7 |
8 #include "vm/assembler.h" | 8 #include "vm/assembler.h" |
9 #include "vm/code_generator.h" | 9 #include "vm/code_generator.h" |
10 #include "vm/cpu.h" | 10 #include "vm/cpu.h" |
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529 __ Pop(R1); // Restore stacktrace. | 529 __ Pop(R1); // Restore stacktrace. |
530 __ Pop(R0); // Restore exception. | 530 __ Pop(R0); // Restore exception. |
531 } | 531 } |
532 __ LeaveStubFrame(); | 532 __ LeaveStubFrame(); |
533 // Remove materialization arguments. | 533 // Remove materialization arguments. |
534 __ add(SP, SP, Operand(R2, ASR, kSmiTagSize)); | 534 __ add(SP, SP, Operand(R2, ASR, kSmiTagSize)); |
535 __ Ret(); | 535 __ Ret(); |
536 } | 536 } |
537 | 537 |
538 | 538 |
| 539 // LR: return address + call-instruction-size |
539 // R0: result, must be preserved | 540 // R0: result, must be preserved |
540 void StubCode::GenerateDeoptimizeLazyFromReturnStub(Assembler* assembler) { | 541 void StubCode::GenerateDeoptimizeLazyFromReturnStub(Assembler* assembler) { |
| 542 // Correct return address to point just after the call that is being |
| 543 // deoptimized. |
| 544 __ AddImmediate(LR, -CallPattern::DeoptCallPatternLengthInBytes()); |
541 // Push zap value instead of CODE_REG for lazy deopt. | 545 // Push zap value instead of CODE_REG for lazy deopt. |
542 __ LoadImmediate(IP, 0xf1f1f1f1); | 546 __ LoadImmediate(IP, 0xf1f1f1f1); |
543 __ Push(IP); | 547 __ Push(IP); |
544 // Return address for "call" to deopt stub. | |
545 __ LoadImmediate(LR, 0xe1e1e1e1); | |
546 __ ldr(CODE_REG, Address(THR, Thread::lazy_deopt_from_return_stub_offset())); | |
547 GenerateDeoptimizationSequence(assembler, kLazyDeoptFromReturn); | 548 GenerateDeoptimizationSequence(assembler, kLazyDeoptFromReturn); |
548 } | 549 } |
549 | 550 |
550 | 551 |
| 552 // LR: return address + call-instruction-size |
551 // R0: exception, must be preserved | 553 // R0: exception, must be preserved |
552 // R1: stacktrace, must be preserved | 554 // R1: stacktrace, must be preserved |
553 void StubCode::GenerateDeoptimizeLazyFromThrowStub(Assembler* assembler) { | 555 void StubCode::GenerateDeoptimizeLazyFromThrowStub(Assembler* assembler) { |
| 556 // Correct return address to point just after the call that is being |
| 557 // deoptimized. |
| 558 __ AddImmediate(LR, -CallPattern::DeoptCallPatternLengthInBytes()); |
554 // Push zap value instead of CODE_REG for lazy deopt. | 559 // Push zap value instead of CODE_REG for lazy deopt. |
555 __ LoadImmediate(IP, 0xf1f1f1f1); | 560 __ LoadImmediate(IP, 0xf1f1f1f1); |
556 __ Push(IP); | 561 __ Push(IP); |
557 // Return address for "call" to deopt stub. | |
558 __ LoadImmediate(LR, 0xe1e1e1e1); | |
559 __ ldr(CODE_REG, Address(THR, Thread::lazy_deopt_from_throw_stub_offset())); | |
560 GenerateDeoptimizationSequence(assembler, kLazyDeoptFromThrow); | 562 GenerateDeoptimizationSequence(assembler, kLazyDeoptFromThrow); |
561 } | 563 } |
562 | 564 |
563 | 565 |
564 void StubCode::GenerateDeoptimizeStub(Assembler* assembler) { | 566 void StubCode::GenerateDeoptimizeStub(Assembler* assembler) { |
565 GenerateDeoptimizationSequence(assembler, kEagerDeopt); | 567 GenerateDeoptimizationSequence(assembler, kEagerDeopt); |
566 } | 568 } |
567 | 569 |
568 | 570 |
569 static void GenerateDispatcherCode(Assembler* assembler, | 571 static void GenerateDispatcherCode(Assembler* assembler, |
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2254 } | 2256 } |
2255 | 2257 |
2256 | 2258 |
2257 void StubCode::GenerateFrameAwaitingMaterializationStub(Assembler* assembler) { | 2259 void StubCode::GenerateFrameAwaitingMaterializationStub(Assembler* assembler) { |
2258 __ bkpt(0); | 2260 __ bkpt(0); |
2259 } | 2261 } |
2260 | 2262 |
2261 } // namespace dart | 2263 } // namespace dart |
2262 | 2264 |
2263 #endif // defined TARGET_ARCH_ARM | 2265 #endif // defined TARGET_ARCH_ARM |
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