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Issue 16005015: MIPS: add a default value for return value (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 years, 6 months ago
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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 // 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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876 876
877 877
878 static void GenerateFastApiDirectCall(MacroAssembler* masm, 878 static void GenerateFastApiDirectCall(MacroAssembler* masm,
879 const CallOptimization& optimization, 879 const CallOptimization& optimization,
880 int argc) { 880 int argc) {
881 // ----------- S t a t e ------------- 881 // ----------- S t a t e -------------
882 // -- sp[0] : holder (set by CheckPrototypes) 882 // -- sp[0] : holder (set by CheckPrototypes)
883 // -- sp[4] : callee JS function 883 // -- sp[4] : callee JS function
884 // -- sp[8] : call data 884 // -- sp[8] : call data
885 // -- sp[12] : isolate 885 // -- sp[12] : isolate
886 // -- sp[16] : ReturnValue 886 // -- sp[16] : ReturnValue default value
887 // -- sp[20] : last JS argument 887 // -- sp[20] : ReturnValue
888 // -- sp[24] : last JS argument
888 // -- ... 889 // -- ...
889 // -- sp[(argc + 4) * 4] : first JS argument 890 // -- sp[(argc + 5) * 4] : first JS argument
890 // -- sp[(argc + 5) * 4] : receiver 891 // -- sp[(argc + 6) * 4] : receiver
891 // ----------------------------------- 892 // -----------------------------------
892 // Get the function and setup the context. 893 // Get the function and setup the context.
893 Handle<JSFunction> function = optimization.constant_function(); 894 Handle<JSFunction> function = optimization.constant_function();
894 __ LoadHeapObject(t1, function); 895 __ LoadHeapObject(t1, function);
895 __ lw(cp, FieldMemOperand(t1, JSFunction::kContextOffset)); 896 __ lw(cp, FieldMemOperand(t1, JSFunction::kContextOffset));
896 897
897 // Pass the additional arguments. 898 // Pass the additional arguments.
898 Handle<CallHandlerInfo> api_call_info = optimization.api_call_info(); 899 Handle<CallHandlerInfo> api_call_info = optimization.api_call_info();
899 Handle<Object> call_data(api_call_info->data(), masm->isolate()); 900 Handle<Object> call_data(api_call_info->data(), masm->isolate());
900 if (masm->isolate()->heap()->InNewSpace(*call_data)) { 901 if (masm->isolate()->heap()->InNewSpace(*call_data)) {
901 __ li(a0, api_call_info); 902 __ li(a0, api_call_info);
902 __ lw(t2, FieldMemOperand(a0, CallHandlerInfo::kDataOffset)); 903 __ lw(t2, FieldMemOperand(a0, CallHandlerInfo::kDataOffset));
903 } else { 904 } else {
904 __ li(t2, call_data); 905 __ li(t2, call_data);
905 } 906 }
906 907
907 __ li(t3, Operand(ExternalReference::isolate_address(masm->isolate()))); 908 __ li(t3, Operand(ExternalReference::isolate_address(masm->isolate())));
908 // Store JS function, call data, isolate and ReturnValue. 909 // Store JS function, call data, isolate ReturnValue default and ReturnValue.
909 __ sw(t1, MemOperand(sp, 1 * kPointerSize)); 910 __ sw(t1, MemOperand(sp, 1 * kPointerSize));
910 __ sw(t2, MemOperand(sp, 2 * kPointerSize)); 911 __ sw(t2, MemOperand(sp, 2 * kPointerSize));
911 __ sw(t3, MemOperand(sp, 3 * kPointerSize)); 912 __ sw(t3, MemOperand(sp, 3 * kPointerSize));
912 __ LoadRoot(t1, Heap::kUndefinedValueRootIndex); 913 __ LoadRoot(t1, Heap::kUndefinedValueRootIndex);
913 __ sw(t1, MemOperand(sp, 4 * kPointerSize)); 914 __ sw(t1, MemOperand(sp, 4 * kPointerSize));
915 __ sw(t1, MemOperand(sp, 5 * kPointerSize));
914 916
915 // Prepare arguments. 917 // Prepare arguments.
916 __ Addu(a2, sp, Operand(4 * kPointerSize)); 918 __ Addu(a2, sp, Operand(5 * kPointerSize));
917 919
918 // Allocate the v8::Arguments structure in the arguments' space since 920 // Allocate the v8::Arguments structure in the arguments' space since
919 // it's not controlled by GC. 921 // it's not controlled by GC.
920 const int kApiStackSpace = 4; 922 const int kApiStackSpace = 4;
921 923
922 FrameScope frame_scope(masm, StackFrame::MANUAL); 924 FrameScope frame_scope(masm, StackFrame::MANUAL);
923 __ EnterExitFrame(false, kApiStackSpace); 925 __ EnterExitFrame(false, kApiStackSpace);
924 926
925 // NOTE: the O32 abi requires a0 to hold a special pointer when returning a 927 // NOTE: the O32 abi requires a0 to hold a special pointer when returning a
926 // struct from the function (which is currently the case). This means we pass 928 // struct from the function (which is currently the case). This means we pass
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1428 // the exit frame to make GC aware of them and store pointers to them. 1430 // the exit frame to make GC aware of them and store pointers to them.
1429 __ push(receiver()); 1431 __ push(receiver());
1430 __ mov(scratch2(), sp); // scratch2 = AccessorInfo::args_ 1432 __ mov(scratch2(), sp); // scratch2 = AccessorInfo::args_
1431 if (heap()->InNewSpace(callback->data())) { 1433 if (heap()->InNewSpace(callback->data())) {
1432 __ li(scratch3(), callback); 1434 __ li(scratch3(), callback);
1433 __ lw(scratch3(), FieldMemOperand(scratch3(), 1435 __ lw(scratch3(), FieldMemOperand(scratch3(),
1434 ExecutableAccessorInfo::kDataOffset)); 1436 ExecutableAccessorInfo::kDataOffset));
1435 } else { 1437 } else {
1436 __ li(scratch3(), Handle<Object>(callback->data(), isolate())); 1438 __ li(scratch3(), Handle<Object>(callback->data(), isolate()));
1437 } 1439 }
1438 __ Subu(sp, sp, 5 * kPointerSize); 1440 __ Subu(sp, sp, 6 * kPointerSize);
1439 __ sw(reg, MemOperand(sp, 4 * kPointerSize)); 1441 __ sw(reg, MemOperand(sp, 5 * kPointerSize));
1442 __ sw(scratch3(), MemOperand(sp, 4 * kPointerSize));
1443 __ LoadRoot(scratch3(), Heap::kUndefinedValueRootIndex);
1440 __ sw(scratch3(), MemOperand(sp, 3 * kPointerSize)); 1444 __ sw(scratch3(), MemOperand(sp, 3 * kPointerSize));
1441 __ LoadRoot(scratch3(), Heap::kUndefinedValueRootIndex); 1445 __ sw(scratch3(), MemOperand(sp, 2 * kPointerSize));
1442 __ li(scratch4(), 1446 __ li(scratch4(),
1443 Operand(ExternalReference::isolate_address(isolate()))); 1447 Operand(ExternalReference::isolate_address(isolate())));
1444 __ sw(scratch3(), MemOperand(sp, 2 * kPointerSize));
1445 __ sw(scratch4(), MemOperand(sp, 1 * kPointerSize)); 1448 __ sw(scratch4(), MemOperand(sp, 1 * kPointerSize));
1446 __ sw(name(), MemOperand(sp, 0 * kPointerSize)); 1449 __ sw(name(), MemOperand(sp, 0 * kPointerSize));
1447 1450
1448 Address getter_address = v8::ToCData<Address>(callback->getter()); 1451 Address getter_address = v8::ToCData<Address>(callback->getter());
1449 bool returns_handle = 1452 bool returns_handle =
1450 !CallbackTable::ReturnsVoid(isolate(), getter_address); 1453 !CallbackTable::ReturnsVoid(isolate(), getter_address);
1451 1454
1452 Register first_arg = returns_handle ? a1 : a0; 1455 Register first_arg = returns_handle ? a1 : a0;
1453 Register second_arg = returns_handle ? a2 : a1; 1456 Register second_arg = returns_handle ? a2 : a1;
1454 1457
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1474 ApiFunction fun(getter_address); 1477 ApiFunction fun(getter_address);
1475 ExternalReference::Type type = 1478 ExternalReference::Type type =
1476 returns_handle ? 1479 returns_handle ?
1477 ExternalReference::DIRECT_GETTER_CALL : 1480 ExternalReference::DIRECT_GETTER_CALL :
1478 ExternalReference::DIRECT_GETTER_CALL_NEW; 1481 ExternalReference::DIRECT_GETTER_CALL_NEW;
1479 1482
1480 ExternalReference ref = ExternalReference(&fun, type, isolate()); 1483 ExternalReference ref = ExternalReference(&fun, type, isolate());
1481 __ CallApiFunctionAndReturn(ref, 1484 __ CallApiFunctionAndReturn(ref,
1482 kStackUnwindSpace, 1485 kStackUnwindSpace,
1483 returns_handle, 1486 returns_handle,
1484 4); 1487 5);
1485 } 1488 }
1486 1489
1487 1490
1488 void BaseLoadStubCompiler::GenerateLoadInterceptor( 1491 void BaseLoadStubCompiler::GenerateLoadInterceptor(
1489 Register holder_reg, 1492 Register holder_reg,
1490 Handle<JSObject> object, 1493 Handle<JSObject> object,
1491 Handle<JSObject> interceptor_holder, 1494 Handle<JSObject> interceptor_holder,
1492 LookupResult* lookup, 1495 LookupResult* lookup,
1493 Handle<Name> name) { 1496 Handle<Name> name) {
1494 ASSERT(interceptor_holder->HasNamedInterceptor()); 1497 ASSERT(interceptor_holder->HasNamedInterceptor());
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3735 TailCallBuiltin(masm, Builtins::kKeyedStoreIC_Slow); 3738 TailCallBuiltin(masm, Builtins::kKeyedStoreIC_Slow);
3736 } 3739 }
3737 } 3740 }
3738 3741
3739 3742
3740 #undef __ 3743 #undef __
3741 3744
3742 } } // namespace v8::internal 3745 } } // namespace v8::internal
3743 3746
3744 #endif // V8_TARGET_ARCH_MIPS 3747 #endif // V8_TARGET_ARCH_MIPS
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