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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
11 // with the distribution. | 11 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
15 // | 15 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 #include "v8.h" | 28 #include "v8.h" |
29 | 29 |
30 #include "assembler-arm.h" | |
30 #include "codegen-inl.h" | 31 #include "codegen-inl.h" |
32 #include "disasm.h" | |
31 #include "ic-inl.h" | 33 #include "ic-inl.h" |
32 #include "runtime.h" | 34 #include "runtime.h" |
33 #include "stub-cache.h" | 35 #include "stub-cache.h" |
34 | 36 |
35 namespace v8 { | 37 namespace v8 { |
36 namespace internal { | 38 namespace internal { |
37 | 39 |
38 | 40 |
39 // ---------------------------------------------------------------------------- | 41 // ---------------------------------------------------------------------------- |
40 // Static IC stub generators. | 42 // Static IC stub generators. |
(...skipping 513 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
554 | 556 |
555 __ ldr(r3, MemOperand(sp, 0)); | 557 __ ldr(r3, MemOperand(sp, 0)); |
556 __ stm(db_w, sp, r2.bit() | r3.bit()); | 558 __ stm(db_w, sp, r2.bit() | r3.bit()); |
557 | 559 |
558 // Perform tail call to the entry. | 560 // Perform tail call to the entry. |
559 ExternalReference ref = ExternalReference(IC_Utility(kLoadIC_Miss)); | 561 ExternalReference ref = ExternalReference(IC_Utility(kLoadIC_Miss)); |
560 __ TailCallExternalReference(ref, 2, 1); | 562 __ TailCallExternalReference(ref, 2, 1); |
561 } | 563 } |
562 | 564 |
563 | 565 |
564 // TODO(181): Implement map patching once loop nesting is tracked on the | 566 void LoadIC::ClearInlinedVersion(Address address) { |
565 // ARM platform so we can generate inlined fast-case code loads in | 567 // Reset the map check of the inlined inobject property load (if present) to |
566 // loops. | 568 // guarantee failure by holding an invalid map (the null value). The offset |
567 void LoadIC::ClearInlinedVersion(Address address) {} | 569 // can be patched to anything. |
568 bool LoadIC::PatchInlinedLoad(Address address, Object* map, int offset) { | 570 PatchInlinedLoad(address, Heap::null_value(), 0); |
569 return false; | |
570 } | 571 } |
571 | 572 |
573 | |
574 bool LoadIC::PatchInlinedLoad(Address address, Object* map, int offset) { | |
575 // If the instruction after the call site is not a B instruction then this is | |
576 // not related to an inlined in-object property load. The B instructions is | |
577 // located just after the call to the IC in the deferred code handling the | |
578 // miss in the inlined code. All other calls to a load IC should ensure there | |
579 // in no B instruction directly following the call. | |
580 Address address_after_call = address + Assembler::kCallTargetAddressOffset; | |
581 Instr instr_after_call = Assembler::instr_at(address_after_call); | |
582 if (!Assembler::IsB(instr_after_call)) return false; | |
583 | |
584 // Find the end of the inlined code for handling the load. | |
585 int b_offset = | |
586 Assembler::GetBOffset(instr_after_call) + Assembler::kPcLoadDelta; | |
587 ASSERT(b_offset < 0); // Jumping back from deferred code. | |
588 Address inline_end_address = address_after_call + b_offset; | |
589 | |
590 // Patch the offset of the property load instruction (ldr r0, [r1, #+XXX]). | |
591 Address ldr_property_instr_address = inline_end_address - 4; | |
592 ASSERT(Assembler::IsLdrRegisterImmediate( | |
593 Assembler::instr_at(ldr_property_instr_address))); | |
594 Instr ldr_property_instr = Assembler::instr_at(ldr_property_instr_address); | |
595 ldr_property_instr = Assembler::SetLdrRegisterImmediateOffset( | |
596 ldr_property_instr, offset - kHeapObjectTag); | |
Erik Corry
2010/04/22 20:10:41
What if the offset doesn't fit in the immediate fi
| |
597 Assembler::instr_at_put(ldr_property_instr_address, ldr_property_instr); | |
598 | |
599 // Indicate that code has changed. | |
600 CPU::FlushICache(ldr_property_instr_address, 1 * Assembler::kInstrSize); | |
601 | |
602 // Patch the map check. | |
603 Address ldr_map_instr_address = inline_end_address - 16; | |
604 Assembler::set_target_address_at(ldr_map_instr_address, | |
605 reinterpret_cast<Address>(map)); | |
606 return true; | |
607 } | |
608 | |
609 | |
572 void KeyedLoadIC::ClearInlinedVersion(Address address) {} | 610 void KeyedLoadIC::ClearInlinedVersion(Address address) {} |
611 | |
612 | |
573 bool KeyedLoadIC::PatchInlinedLoad(Address address, Object* map) { | 613 bool KeyedLoadIC::PatchInlinedLoad(Address address, Object* map) { |
574 return false; | 614 return false; |
575 } | 615 } |
576 | 616 |
617 | |
577 void KeyedStoreIC::ClearInlinedVersion(Address address) {} | 618 void KeyedStoreIC::ClearInlinedVersion(Address address) {} |
619 | |
620 | |
578 void KeyedStoreIC::RestoreInlinedVersion(Address address) {} | 621 void KeyedStoreIC::RestoreInlinedVersion(Address address) {} |
622 | |
623 | |
579 bool KeyedStoreIC::PatchInlinedStore(Address address, Object* map) { | 624 bool KeyedStoreIC::PatchInlinedStore(Address address, Object* map) { |
580 return false; | 625 return false; |
581 } | 626 } |
582 | 627 |
583 | 628 |
584 Object* KeyedLoadIC_Miss(Arguments args); | 629 Object* KeyedLoadIC_Miss(Arguments args); |
585 | 630 |
586 | 631 |
587 void KeyedLoadIC::GenerateMiss(MacroAssembler* masm) { | 632 void KeyedLoadIC::GenerateMiss(MacroAssembler* masm) { |
588 // ---------- S t a t e -------------- | 633 // ---------- S t a t e -------------- |
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1685 __ bind(&miss); | 1730 __ bind(&miss); |
1686 | 1731 |
1687 GenerateMiss(masm); | 1732 GenerateMiss(masm); |
1688 } | 1733 } |
1689 | 1734 |
1690 | 1735 |
1691 #undef __ | 1736 #undef __ |
1692 | 1737 |
1693 | 1738 |
1694 } } // namespace v8::internal | 1739 } } // namespace v8::internal |
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