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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #if V8_TARGET_ARCH_ARM | 5 #if V8_TARGET_ARCH_ARM |
6 | 6 |
7 #include "src/base/bits.h" | 7 #include "src/base/bits.h" |
8 #include "src/bootstrapper.h" | 8 #include "src/bootstrapper.h" |
9 #include "src/code-stubs.h" | 9 #include "src/code-stubs.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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2388 __ tst(r4, Operand(1 << (SharedFunctionInfo::kStrictModeFunction + | 2388 __ tst(r4, Operand(1 << (SharedFunctionInfo::kStrictModeFunction + |
2389 kSmiTagSize))); | 2389 kSmiTagSize))); |
2390 __ b(ne, cont); | 2390 __ b(ne, cont); |
2391 | 2391 |
2392 // Do not transform the receiver for native (Compilerhints already in r3). | 2392 // Do not transform the receiver for native (Compilerhints already in r3). |
2393 __ tst(r4, Operand(1 << (SharedFunctionInfo::kNative + kSmiTagSize))); | 2393 __ tst(r4, Operand(1 << (SharedFunctionInfo::kNative + kSmiTagSize))); |
2394 __ b(ne, cont); | 2394 __ b(ne, cont); |
2395 } | 2395 } |
2396 | 2396 |
2397 | 2397 |
2398 static void EmitSlowCase(MacroAssembler* masm, int argc) { | 2398 static void EmitSlowCase(MacroAssembler* masm, |
2399 __ mov(r0, Operand(argc)); | 2399 int argc, |
2400 __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); | 2400 Label* non_function) { |
| 2401 // Check for function proxy. |
| 2402 __ cmp(r4, Operand(JS_FUNCTION_PROXY_TYPE)); |
| 2403 __ b(ne, non_function); |
| 2404 __ push(r1); // put proxy as additional argument |
| 2405 __ mov(r0, Operand(argc + 1, RelocInfo::NONE32)); |
| 2406 __ mov(r2, Operand::Zero()); |
| 2407 __ GetBuiltinFunction(r1, Context::CALL_FUNCTION_PROXY_BUILTIN_INDEX); |
| 2408 { |
| 2409 Handle<Code> adaptor = |
| 2410 masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(); |
| 2411 __ Jump(adaptor, RelocInfo::CODE_TARGET); |
| 2412 } |
| 2413 |
| 2414 // CALL_NON_FUNCTION expects the non-function callee as receiver (instead |
| 2415 // of the original receiver from the call site). |
| 2416 __ bind(non_function); |
| 2417 __ str(r1, MemOperand(sp, argc * kPointerSize)); |
| 2418 __ mov(r0, Operand(argc)); // Set up the number of arguments. |
| 2419 __ mov(r2, Operand::Zero()); |
| 2420 __ GetBuiltinFunction(r1, Context::CALL_NON_FUNCTION_BUILTIN_INDEX); |
| 2421 __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(), |
| 2422 RelocInfo::CODE_TARGET); |
2401 } | 2423 } |
2402 | 2424 |
2403 | 2425 |
2404 static void EmitWrapCase(MacroAssembler* masm, int argc, Label* cont) { | 2426 static void EmitWrapCase(MacroAssembler* masm, int argc, Label* cont) { |
2405 // Wrap the receiver and patch it back onto the stack. | 2427 // Wrap the receiver and patch it back onto the stack. |
2406 { FrameAndConstantPoolScope frame_scope(masm, StackFrame::INTERNAL); | 2428 { FrameAndConstantPoolScope frame_scope(masm, StackFrame::INTERNAL); |
2407 __ push(r1); | 2429 __ push(r1); |
2408 __ mov(r0, r3); | 2430 __ mov(r0, r3); |
2409 ToObjectStub stub(masm->isolate()); | 2431 ToObjectStub stub(masm->isolate()); |
2410 __ CallStub(&stub); | 2432 __ CallStub(&stub); |
2411 __ pop(r1); | 2433 __ pop(r1); |
2412 } | 2434 } |
2413 __ str(r0, MemOperand(sp, argc * kPointerSize)); | 2435 __ str(r0, MemOperand(sp, argc * kPointerSize)); |
2414 __ jmp(cont); | 2436 __ jmp(cont); |
2415 } | 2437 } |
2416 | 2438 |
2417 | 2439 |
2418 static void CallFunctionNoFeedback(MacroAssembler* masm, | 2440 static void CallFunctionNoFeedback(MacroAssembler* masm, |
2419 int argc, bool needs_checks, | 2441 int argc, bool needs_checks, |
2420 bool call_as_method) { | 2442 bool call_as_method) { |
2421 // r1 : the function to call | 2443 // r1 : the function to call |
2422 Label slow, wrap, cont; | 2444 Label slow, non_function, wrap, cont; |
2423 | 2445 |
2424 if (needs_checks) { | 2446 if (needs_checks) { |
2425 // Check that the function is really a JavaScript function. | 2447 // Check that the function is really a JavaScript function. |
2426 // r1: pushed function (to be verified) | 2448 // r1: pushed function (to be verified) |
2427 __ JumpIfSmi(r1, &slow); | 2449 __ JumpIfSmi(r1, &non_function); |
2428 | 2450 |
2429 // Goto slow case if we do not have a function. | 2451 // Goto slow case if we do not have a function. |
2430 __ CompareObjectType(r1, r4, r4, JS_FUNCTION_TYPE); | 2452 __ CompareObjectType(r1, r4, r4, JS_FUNCTION_TYPE); |
2431 __ b(ne, &slow); | 2453 __ b(ne, &slow); |
2432 } | 2454 } |
2433 | 2455 |
2434 // Fast-case: Invoke the function now. | 2456 // Fast-case: Invoke the function now. |
2435 // r1: pushed function | 2457 // r1: pushed function |
2436 ParameterCount actual(argc); | 2458 ParameterCount actual(argc); |
2437 | 2459 |
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2452 } | 2474 } |
2453 | 2475 |
2454 __ bind(&cont); | 2476 __ bind(&cont); |
2455 } | 2477 } |
2456 | 2478 |
2457 __ InvokeFunction(r1, actual, JUMP_FUNCTION, NullCallWrapper()); | 2479 __ InvokeFunction(r1, actual, JUMP_FUNCTION, NullCallWrapper()); |
2458 | 2480 |
2459 if (needs_checks) { | 2481 if (needs_checks) { |
2460 // Slow-case: Non-function called. | 2482 // Slow-case: Non-function called. |
2461 __ bind(&slow); | 2483 __ bind(&slow); |
2462 EmitSlowCase(masm, argc); | 2484 EmitSlowCase(masm, argc, &non_function); |
2463 } | 2485 } |
2464 | 2486 |
2465 if (call_as_method) { | 2487 if (call_as_method) { |
2466 __ bind(&wrap); | 2488 __ bind(&wrap); |
2467 EmitWrapCase(masm, argc, &cont); | 2489 EmitWrapCase(masm, argc, &cont); |
2468 } | 2490 } |
2469 } | 2491 } |
2470 | 2492 |
2471 | 2493 |
2472 void CallFunctionStub::Generate(MacroAssembler* masm) { | 2494 void CallFunctionStub::Generate(MacroAssembler* masm) { |
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2586 | 2608 |
2587 __ mov(r2, r4); | 2609 __ mov(r2, r4); |
2588 __ mov(r3, r1); | 2610 __ mov(r3, r1); |
2589 ArrayConstructorStub stub(masm->isolate(), arg_count()); | 2611 ArrayConstructorStub stub(masm->isolate(), arg_count()); |
2590 __ TailCallStub(&stub); | 2612 __ TailCallStub(&stub); |
2591 | 2613 |
2592 __ bind(&miss); | 2614 __ bind(&miss); |
2593 GenerateMiss(masm); | 2615 GenerateMiss(masm); |
2594 | 2616 |
2595 // The slow case, we need this no matter what to complete a call after a miss. | 2617 // The slow case, we need this no matter what to complete a call after a miss. |
2596 __ mov(r0, Operand(arg_count())); | 2618 CallFunctionNoFeedback(masm, |
2597 __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); | 2619 arg_count(), |
| 2620 true, |
| 2621 CallAsMethod()); |
| 2622 |
| 2623 // Unreachable. |
| 2624 __ stop("Unexpected code address"); |
2598 } | 2625 } |
2599 | 2626 |
2600 | 2627 |
2601 void CallICStub::Generate(MacroAssembler* masm) { | 2628 void CallICStub::Generate(MacroAssembler* masm) { |
2602 // r1 - function | 2629 // r1 - function |
2603 // r3 - slot id (Smi) | 2630 // r3 - slot id (Smi) |
2604 // r2 - vector | 2631 // r2 - vector |
2605 const int with_types_offset = | 2632 const int with_types_offset = |
2606 FixedArray::OffsetOfElementAt(TypeFeedbackVector::kWithTypesIndex); | 2633 FixedArray::OffsetOfElementAt(TypeFeedbackVector::kWithTypesIndex); |
2607 const int generic_offset = | 2634 const int generic_offset = |
2608 FixedArray::OffsetOfElementAt(TypeFeedbackVector::kGenericCountIndex); | 2635 FixedArray::OffsetOfElementAt(TypeFeedbackVector::kGenericCountIndex); |
2609 Label extra_checks_or_miss, slow_start; | 2636 Label extra_checks_or_miss, slow_start; |
2610 Label slow, wrap, cont; | 2637 Label slow, non_function, wrap, cont; |
2611 Label have_js_function; | 2638 Label have_js_function; |
2612 int argc = arg_count(); | 2639 int argc = arg_count(); |
2613 ParameterCount actual(argc); | 2640 ParameterCount actual(argc); |
2614 | 2641 |
2615 // The checks. First, does r1 match the recorded monomorphic target? | 2642 // The checks. First, does r1 match the recorded monomorphic target? |
2616 __ add(r4, r2, Operand::PointerOffsetFromSmiKey(r3)); | 2643 __ add(r4, r2, Operand::PointerOffsetFromSmiKey(r3)); |
2617 __ ldr(r4, FieldMemOperand(r4, FixedArray::kHeaderSize)); | 2644 __ ldr(r4, FieldMemOperand(r4, FixedArray::kHeaderSize)); |
2618 | 2645 |
2619 // We don't know that we have a weak cell. We might have a private symbol | 2646 // We don't know that we have a weak cell. We might have a private symbol |
2620 // or an AllocationSite, but the memory is safe to examine. | 2647 // or an AllocationSite, but the memory is safe to examine. |
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2654 __ JumpIfSmi(r3, &wrap); | 2681 __ JumpIfSmi(r3, &wrap); |
2655 __ CompareObjectType(r3, r4, r4, FIRST_SPEC_OBJECT_TYPE); | 2682 __ CompareObjectType(r3, r4, r4, FIRST_SPEC_OBJECT_TYPE); |
2656 __ b(lt, &wrap); | 2683 __ b(lt, &wrap); |
2657 | 2684 |
2658 __ bind(&cont); | 2685 __ bind(&cont); |
2659 } | 2686 } |
2660 | 2687 |
2661 __ InvokeFunction(r1, actual, JUMP_FUNCTION, NullCallWrapper()); | 2688 __ InvokeFunction(r1, actual, JUMP_FUNCTION, NullCallWrapper()); |
2662 | 2689 |
2663 __ bind(&slow); | 2690 __ bind(&slow); |
2664 EmitSlowCase(masm, argc); | 2691 EmitSlowCase(masm, argc, &non_function); |
2665 | 2692 |
2666 if (CallAsMethod()) { | 2693 if (CallAsMethod()) { |
2667 __ bind(&wrap); | 2694 __ bind(&wrap); |
2668 EmitWrapCase(masm, argc, &cont); | 2695 EmitWrapCase(masm, argc, &cont); |
2669 } | 2696 } |
2670 | 2697 |
2671 __ bind(&extra_checks_or_miss); | 2698 __ bind(&extra_checks_or_miss); |
2672 Label uninitialized, miss; | 2699 Label uninitialized, miss; |
2673 | 2700 |
2674 __ CompareRoot(r4, Heap::kmegamorphic_symbolRootIndex); | 2701 __ CompareRoot(r4, Heap::kmegamorphic_symbolRootIndex); |
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2741 | 2768 |
2742 // We are here because tracing is on or we encountered a MISS case we can't | 2769 // We are here because tracing is on or we encountered a MISS case we can't |
2743 // handle here. | 2770 // handle here. |
2744 __ bind(&miss); | 2771 __ bind(&miss); |
2745 GenerateMiss(masm); | 2772 GenerateMiss(masm); |
2746 | 2773 |
2747 // the slow case | 2774 // the slow case |
2748 __ bind(&slow_start); | 2775 __ bind(&slow_start); |
2749 // Check that the function is really a JavaScript function. | 2776 // Check that the function is really a JavaScript function. |
2750 // r1: pushed function (to be verified) | 2777 // r1: pushed function (to be verified) |
2751 __ JumpIfSmi(r1, &slow); | 2778 __ JumpIfSmi(r1, &non_function); |
2752 | 2779 |
2753 // Goto slow case if we do not have a function. | 2780 // Goto slow case if we do not have a function. |
2754 __ CompareObjectType(r1, r4, r4, JS_FUNCTION_TYPE); | 2781 __ CompareObjectType(r1, r4, r4, JS_FUNCTION_TYPE); |
2755 __ b(ne, &slow); | 2782 __ b(ne, &slow); |
2756 __ jmp(&have_js_function); | 2783 __ jmp(&have_js_function); |
2757 } | 2784 } |
2758 | 2785 |
2759 | 2786 |
2760 void CallICStub::GenerateMiss(MacroAssembler* masm) { | 2787 void CallICStub::GenerateMiss(MacroAssembler* masm) { |
2761 FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); | 2788 FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
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5564 MemOperand(fp, 6 * kPointerSize), NULL); | 5591 MemOperand(fp, 6 * kPointerSize), NULL); |
5565 } | 5592 } |
5566 | 5593 |
5567 | 5594 |
5568 #undef __ | 5595 #undef __ |
5569 | 5596 |
5570 } // namespace internal | 5597 } // namespace internal |
5571 } // namespace v8 | 5598 } // namespace v8 |
5572 | 5599 |
5573 #endif // V8_TARGET_ARCH_ARM | 5600 #endif // V8_TARGET_ARCH_ARM |
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