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1 // Copyright 2012 the V8 project authors. All rights reserved.7 | 1 // Copyright 2012 the V8 project authors. All rights reserved.7 |
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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323 __ li(entry_offset, Operand(entry - base)); | 323 __ li(entry_offset, Operand(entry - base)); |
324 | 324 |
325 if (table_entry->needs_frame) { | 325 if (table_entry->needs_frame) { |
326 DCHECK(!info()->saves_caller_doubles()); | 326 DCHECK(!info()->saves_caller_doubles()); |
327 Comment(";;; call deopt with frame"); | 327 Comment(";;; call deopt with frame"); |
328 __ PushCommonFrame(); | 328 __ PushCommonFrame(); |
329 __ Call(&needs_frame); | 329 __ Call(&needs_frame); |
330 } else { | 330 } else { |
331 __ Call(&call_deopt_entry); | 331 __ Call(&call_deopt_entry); |
332 } | 332 } |
333 info()->LogDeoptCallPosition(masm()->pc_offset(), | 333 LogDeoptCallPosition(masm()->pc_offset(), |
334 table_entry->deopt_info.inlining_id); | 334 table_entry->deopt_info.inlining_id); |
335 } | 335 } |
336 | 336 |
337 if (needs_frame.is_linked()) { | 337 if (needs_frame.is_linked()) { |
338 __ bind(&needs_frame); | 338 __ bind(&needs_frame); |
339 // This variant of deopt can only be used with stubs. Since we don't | 339 // This variant of deopt can only be used with stubs. Since we don't |
340 // have a function pointer to install in the stack frame that we're | 340 // have a function pointer to install in the stack frame that we're |
341 // building, install a special marker there instead. | 341 // building, install a special marker there instead. |
342 __ li(at, Operand(Smi::FromInt(StackFrame::STUB))); | 342 __ li(at, Operand(Smi::FromInt(StackFrame::STUB))); |
343 __ push(at); | 343 __ push(at); |
344 DCHECK(info()->IsStub()); | 344 DCHECK(info()->IsStub()); |
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791 | 791 |
792 Deoptimizer::DeoptInfo deopt_info = MakeDeoptInfo(instr, deopt_reason); | 792 Deoptimizer::DeoptInfo deopt_info = MakeDeoptInfo(instr, deopt_reason); |
793 | 793 |
794 DCHECK(info()->IsStub() || frame_is_built_); | 794 DCHECK(info()->IsStub() || frame_is_built_); |
795 // Go through jump table if we need to handle condition, build frame, or | 795 // Go through jump table if we need to handle condition, build frame, or |
796 // restore caller doubles. | 796 // restore caller doubles. |
797 if (condition == al && frame_is_built_ && | 797 if (condition == al && frame_is_built_ && |
798 !info()->saves_caller_doubles()) { | 798 !info()->saves_caller_doubles()) { |
799 DeoptComment(deopt_info); | 799 DeoptComment(deopt_info); |
800 __ Call(entry, RelocInfo::RUNTIME_ENTRY, condition, src1, src2); | 800 __ Call(entry, RelocInfo::RUNTIME_ENTRY, condition, src1, src2); |
801 info()->LogDeoptCallPosition(masm()->pc_offset(), deopt_info.inlining_id); | 801 LogDeoptCallPosition(masm()->pc_offset(), deopt_info.inlining_id); |
802 } else { | 802 } else { |
803 Deoptimizer::JumpTableEntry table_entry(entry, deopt_info, bailout_type, | 803 Deoptimizer::JumpTableEntry table_entry(entry, deopt_info, bailout_type, |
804 !frame_is_built_); | 804 !frame_is_built_); |
805 // We often have several deopts to the same entry, reuse the last | 805 // We often have several deopts to the same entry, reuse the last |
806 // jump entry if this is the case. | 806 // jump entry if this is the case. |
807 if (FLAG_trace_deopt || isolate()->cpu_profiler()->is_profiling() || | 807 if (FLAG_trace_deopt || isolate()->cpu_profiler()->is_profiling() || |
808 jump_table_.is_empty() || | 808 jump_table_.is_empty() || |
809 !table_entry.IsEquivalentTo(jump_table_.last())) { | 809 !table_entry.IsEquivalentTo(jump_table_.last())) { |
810 jump_table_.Add(table_entry, zone()); | 810 jump_table_.Add(table_entry, zone()); |
811 } | 811 } |
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5531 __ lw(result, FieldMemOperand(scratch, | 5531 __ lw(result, FieldMemOperand(scratch, |
5532 FixedArray::kHeaderSize - kPointerSize)); | 5532 FixedArray::kHeaderSize - kPointerSize)); |
5533 __ bind(deferred->exit()); | 5533 __ bind(deferred->exit()); |
5534 __ bind(&done); | 5534 __ bind(&done); |
5535 } | 5535 } |
5536 | 5536 |
5537 #undef __ | 5537 #undef __ |
5538 | 5538 |
5539 } // namespace internal | 5539 } // namespace internal |
5540 } // namespace v8 | 5540 } // namespace v8 |
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