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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 |
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| 572 // instruction is located just after the call to the IC in the deferred code | 572 // instruction is located just after the call to the IC in the deferred code |
| 573 // handling the miss in the inlined code. After the nop1 instruction there is | 573 // handling the miss in the inlined code. After the nop1 instruction there is |
| 574 // a branch instruction for jumping back from the deferred code. | 574 // a branch instruction for jumping back from the deferred code. |
| 575 Address address_after_call = address + Assembler::kCallTargetAddressOffset; | 575 Address address_after_call = address + Assembler::kCallTargetAddressOffset; |
| 576 Instr instr_after_call = Assembler::instr_at(address_after_call); | 576 Instr instr_after_call = Assembler::instr_at(address_after_call); |
| 577 if (!Assembler::IsNop(instr_after_call, PROPERTY_ACCESS_INLINED)) { | 577 if (!Assembler::IsNop(instr_after_call, PROPERTY_ACCESS_INLINED)) { |
| 578 return false; | 578 return false; |
| 579 } | 579 } |
| 580 Address address_after_nop = address_after_call + Assembler::kInstrSize; | 580 Address address_after_nop = address_after_call + Assembler::kInstrSize; |
| 581 Instr instr_after_nop = Assembler::instr_at(address_after_nop); | 581 Instr instr_after_nop = Assembler::instr_at(address_after_nop); |
| 582 ASSERT(Assembler::IsBranch(instr_after_nop)); | 582 // There may be some reg-reg move and frame merging code to skip over before |
| 583 // the branch back from the DeferredReferenceGetKeyedValue code to the inlined |
| 584 // code. |
| 585 while (!Assembler::IsBranch(instr_after_nop)) { |
| 586 address_after_nop += Assembler::kInstrSize; |
| 587 instr_after_nop = Assembler::instr_at(address_after_nop); |
| 588 } |
| 583 | 589 |
| 584 // Find the end of the inlined code for handling the load. | 590 // Find the end of the inlined code for handling the load. |
| 585 int b_offset = | 591 int b_offset = |
| 586 Assembler::GetBranchOffset(instr_after_nop) + Assembler::kPcLoadDelta; | 592 Assembler::GetBranchOffset(instr_after_nop) + Assembler::kPcLoadDelta; |
| 587 ASSERT(b_offset < 0); // Jumping back from deferred code. | 593 ASSERT(b_offset < 0); // Jumping back from deferred code. |
| 588 *inline_end_address = address_after_nop + b_offset; | 594 *inline_end_address = address_after_nop + b_offset; |
| 589 | 595 |
| 590 return true; | 596 return true; |
| 591 } | 597 } |
| 592 | 598 |
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| 1805 GenerateMiss(masm); | 1811 GenerateMiss(masm); |
| 1806 } | 1812 } |
| 1807 | 1813 |
| 1808 | 1814 |
| 1809 #undef __ | 1815 #undef __ |
| 1810 | 1816 |
| 1811 | 1817 |
| 1812 } } // namespace v8::internal | 1818 } } // namespace v8::internal |
| 1813 | 1819 |
| 1814 #endif // V8_TARGET_ARCH_ARM | 1820 #endif // V8_TARGET_ARCH_ARM |
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