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1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2014, 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_ARM64) | 6 #if defined(TARGET_ARCH_ARM64) |
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/compiler.h" | 10 #include "vm/compiler.h" |
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550 __ Pop(R1); // Restore stacktrace. | 550 __ Pop(R1); // Restore stacktrace. |
551 __ Pop(R0); // Restore exception. | 551 __ Pop(R0); // Restore exception. |
552 } | 552 } |
553 __ LeaveStubFrame(); | 553 __ LeaveStubFrame(); |
554 // Remove materialization arguments. | 554 // Remove materialization arguments. |
555 __ add(SP, SP, Operand(R2)); | 555 __ add(SP, SP, Operand(R2)); |
556 __ ret(); | 556 __ ret(); |
557 } | 557 } |
558 | 558 |
559 | 559 |
| 560 // LR: return address + call-instruction-size |
560 // R0: result, must be preserved | 561 // R0: result, must be preserved |
561 void StubCode::GenerateDeoptimizeLazyFromReturnStub(Assembler* assembler) { | 562 void StubCode::GenerateDeoptimizeLazyFromReturnStub(Assembler* assembler) { |
| 563 // Correct return address to point just after the call that is being |
| 564 // deoptimized. |
| 565 __ AddImmediate(LR, LR, -CallPattern::kDeoptCallLengthInBytes); |
562 // Push zap value instead of CODE_REG for lazy deopt. | 566 // Push zap value instead of CODE_REG for lazy deopt. |
563 __ LoadImmediate(TMP, 0xf1f1f1f1); | 567 __ LoadImmediate(TMP, 0xf1f1f1f1); |
564 __ Push(TMP); | 568 __ Push(TMP); |
565 // Return address for "call" to deopt stub. | |
566 __ LoadImmediate(LR, 0xe1e1e1e1); | |
567 __ ldr(CODE_REG, Address(THR, Thread::lazy_deopt_from_return_stub_offset())); | |
568 GenerateDeoptimizationSequence(assembler, kLazyDeoptFromReturn); | 569 GenerateDeoptimizationSequence(assembler, kLazyDeoptFromReturn); |
569 } | 570 } |
570 | 571 |
571 | 572 |
| 573 // LR: return address + call-instruction-size |
572 // R0: exception, must be preserved | 574 // R0: exception, must be preserved |
573 // R1: stacktrace, must be preserved | 575 // R1: stacktrace, must be preserved |
574 void StubCode::GenerateDeoptimizeLazyFromThrowStub(Assembler* assembler) { | 576 void StubCode::GenerateDeoptimizeLazyFromThrowStub(Assembler* assembler) { |
| 577 // Correct return address to point just after the call that is being |
| 578 // deoptimized. |
| 579 __ AddImmediate(LR, LR, -CallPattern::kDeoptCallLengthInBytes); |
575 // Push zap value instead of CODE_REG for lazy deopt. | 580 // Push zap value instead of CODE_REG for lazy deopt. |
576 __ LoadImmediate(TMP, 0xf1f1f1f1); | 581 __ LoadImmediate(TMP, 0xf1f1f1f1); |
577 __ Push(TMP); | 582 __ Push(TMP); |
578 // Return address for "call" to deopt stub. | |
579 __ LoadImmediate(LR, 0xe1e1e1e1); | |
580 __ ldr(CODE_REG, Address(THR, Thread::lazy_deopt_from_throw_stub_offset())); | |
581 GenerateDeoptimizationSequence(assembler, kLazyDeoptFromThrow); | 583 GenerateDeoptimizationSequence(assembler, kLazyDeoptFromThrow); |
582 } | 584 } |
583 | 585 |
584 | 586 |
585 void StubCode::GenerateDeoptimizeStub(Assembler* assembler) { | 587 void StubCode::GenerateDeoptimizeStub(Assembler* assembler) { |
586 GenerateDeoptimizationSequence(assembler, kEagerDeopt); | 588 GenerateDeoptimizationSequence(assembler, kEagerDeopt); |
587 } | 589 } |
588 | 590 |
589 | 591 |
590 static void GenerateDispatcherCode(Assembler* assembler, | 592 static void GenerateDispatcherCode(Assembler* assembler, |
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2312 } | 2314 } |
2313 | 2315 |
2314 | 2316 |
2315 void StubCode::GenerateFrameAwaitingMaterializationStub(Assembler* assembler) { | 2317 void StubCode::GenerateFrameAwaitingMaterializationStub(Assembler* assembler) { |
2316 __ brk(0); | 2318 __ brk(0); |
2317 } | 2319 } |
2318 | 2320 |
2319 } // namespace dart | 2321 } // namespace dart |
2320 | 2322 |
2321 #endif // defined TARGET_ARCH_ARM64 | 2323 #endif // defined TARGET_ARCH_ARM64 |
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