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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, 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" // Needed here to get TARGET_ARCH_IA32. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_IA32. |
6 #if defined(TARGET_ARCH_IA32) | 6 #if defined(TARGET_ARCH_IA32) |
7 | 7 |
8 #include "vm/flow_graph_compiler.h" | 8 #include "vm/flow_graph_compiler.h" |
9 | 9 |
10 #include "vm/ast_printer.h" | 10 #include "vm/ast_printer.h" |
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735 // type check runtime call is the checked value. | 735 // type check runtime call is the checked value. |
736 __ Drop(6); | 736 __ Drop(6); |
737 __ popl(EAX); | 737 __ popl(EAX); |
738 | 738 |
739 __ Bind(&is_assignable); | 739 __ Bind(&is_assignable); |
740 __ popl(EDX); // Remove pushed instantiator type arguments. | 740 __ popl(EDX); // Remove pushed instantiator type arguments. |
741 __ popl(ECX); // Remove pushed instantiator. | 741 __ popl(ECX); // Remove pushed instantiator. |
742 } | 742 } |
743 | 743 |
744 | 744 |
745 void FlowGraphCompiler::EmitTrySyncMove(intptr_t dest_offset, | |
746 Location loc, | |
747 bool* push_emitted) { | |
748 const Address dest(EBP, dest_offset); | |
749 if (loc.IsConstant()) { | |
750 if (!*push_emitted) { | |
751 __ pushl(EAX); | |
752 *push_emitted = true; | |
753 } | |
754 __ LoadObject(EAX, loc.constant()); | |
755 __ movl(dest, EAX); | |
756 } else if (loc.IsRegister()) { | |
757 if (*push_emitted && loc.reg() == EAX) { | |
758 __ movl(EAX, Address(ESP, 0)); | |
759 __ movl(dest, EAX); | |
760 } else { | |
761 __ movl(dest, loc.reg()); | |
762 } | |
763 } else { | |
764 Address src = loc.ToStackSlotAddress(); | |
765 if (!src.Equals(dest)) { | |
766 if (!*push_emitted) { | |
767 __ pushl(EAX); | |
768 *push_emitted = true; | |
769 } | |
770 __ movl(EAX, src); | |
771 __ movl(dest, EAX); | |
772 } | |
773 } | |
774 } | |
775 | |
776 | |
777 void FlowGraphCompiler::EmitTrySync(Instruction* instr, intptr_t try_index) { | |
778 ASSERT(is_optimizing()); | |
779 Environment* env = instr->env(); | |
780 CatchBlockEntryInstr* catch_block = | |
781 flow_graph().graph_entry()->GetCatchEntry(try_index); | |
782 const GrowableArray<Definition*>* idefs = catch_block->initial_definitions(); | |
783 // Parameters. | |
784 intptr_t i = 0; | |
785 bool push_emitted = false; | |
786 const intptr_t num_non_copied_params = flow_graph().num_non_copied_params(); | |
787 const intptr_t param_base = | |
788 kParamEndSlotFromFp + num_non_copied_params; | |
789 for (; i < num_non_copied_params; ++i) { | |
790 if ((*idefs)[i]->IsConstant()) continue; // Common constants | |
791 Location loc = env->LocationAt(i); | |
792 EmitTrySyncMove((param_base - i) * kWordSize, loc, &push_emitted); | |
793 } | |
794 | |
795 // Process locals. Skip exception_var and stacktrace_var. | |
796 intptr_t local_base = kFirstLocalSlotFromFp + num_non_copied_params; | |
797 intptr_t ex_idx = local_base - catch_block->exception_var().index(); | |
798 intptr_t st_idx = local_base - catch_block->stacktrace_var().index(); | |
799 for (; i < flow_graph().variable_count(); ++i) { | |
800 if (i == ex_idx || i == st_idx) continue; | |
801 if ((*idefs)[i]->IsConstant()) continue; | |
802 Location loc = env->LocationAt(i); | |
803 EmitTrySyncMove((local_base - i) * kWordSize, loc, &push_emitted); | |
804 // Update safepoint bitmap to indicate that the target location | |
805 // now contains a pointer. | |
806 instr->locs()->stack_bitmap()->Set(i - num_non_copied_params, true); | |
807 } | |
808 if (push_emitted) { | |
809 __ popl(EAX); | |
810 } | |
811 } | |
812 | |
813 | |
814 void FlowGraphCompiler::EmitInstructionEpilogue(Instruction* instr) { | 745 void FlowGraphCompiler::EmitInstructionEpilogue(Instruction* instr) { |
815 if (is_optimizing()) return; | 746 if (is_optimizing()) return; |
816 Definition* defn = instr->AsDefinition(); | 747 Definition* defn = instr->AsDefinition(); |
817 if ((defn != NULL) && defn->is_used()) { | 748 if ((defn != NULL) && defn->is_used()) { |
818 __ pushl(defn->locs()->out().reg()); | 749 __ pushl(defn->locs()->out().reg()); |
819 } | 750 } |
820 } | 751 } |
821 | 752 |
822 | 753 |
823 void FlowGraphCompiler::CopyParameters() { | 754 void FlowGraphCompiler::CopyParameters() { |
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1889 __ movups(reg, Address(ESP, 0)); | 1820 __ movups(reg, Address(ESP, 0)); |
1890 __ addl(ESP, Immediate(kFpuRegisterSize)); | 1821 __ addl(ESP, Immediate(kFpuRegisterSize)); |
1891 } | 1822 } |
1892 | 1823 |
1893 | 1824 |
1894 #undef __ | 1825 #undef __ |
1895 | 1826 |
1896 } // namespace dart | 1827 } // namespace dart |
1897 | 1828 |
1898 #endif // defined TARGET_ARCH_IA32 | 1829 #endif // defined TARGET_ARCH_IA32 |
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