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1 // Copyright 2006-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 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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969 bind(&done); | 969 bind(&done); |
970 } | 970 } |
971 | 971 |
972 | 972 |
973 void MacroAssembler::CallStub(CodeStub* stub) { | 973 void MacroAssembler::CallStub(CodeStub* stub) { |
974 ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. | 974 ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. |
975 call(stub->GetCode(), RelocInfo::CODE_TARGET); | 975 call(stub->GetCode(), RelocInfo::CODE_TARGET); |
976 } | 976 } |
977 | 977 |
978 | 978 |
979 Object* MacroAssembler::TryCallStub(CodeStub* stub) { | 979 MaybeObject* MacroAssembler::TryCallStub(CodeStub* stub) { |
980 ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. | 980 ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. |
981 Object* result = stub->TryGetCode(); | 981 Object* result; |
982 if (!result->IsFailure()) { | 982 { MaybeObject* maybe_result = stub->TryGetCode(); |
983 call(Handle<Code>(Code::cast(result)), RelocInfo::CODE_TARGET); | 983 if (!maybe_result->ToObject(&result)) return maybe_result; |
984 } | 984 } |
| 985 call(Handle<Code>(Code::cast(result)), RelocInfo::CODE_TARGET); |
985 return result; | 986 return result; |
986 } | 987 } |
987 | 988 |
988 | 989 |
989 void MacroAssembler::TailCallStub(CodeStub* stub) { | 990 void MacroAssembler::TailCallStub(CodeStub* stub) { |
990 ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. | 991 ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. |
991 jmp(stub->GetCode(), RelocInfo::CODE_TARGET); | 992 jmp(stub->GetCode(), RelocInfo::CODE_TARGET); |
992 } | 993 } |
993 | 994 |
994 | 995 |
995 Object* MacroAssembler::TryTailCallStub(CodeStub* stub) { | 996 MaybeObject* MacroAssembler::TryTailCallStub(CodeStub* stub) { |
996 ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. | 997 ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. |
997 Object* result = stub->TryGetCode(); | 998 Object* result; |
998 if (!result->IsFailure()) { | 999 { MaybeObject* maybe_result = stub->TryGetCode(); |
999 jmp(Handle<Code>(Code::cast(result)), RelocInfo::CODE_TARGET); | 1000 if (!maybe_result->ToObject(&result)) return maybe_result; |
1000 } | 1001 } |
| 1002 jmp(Handle<Code>(Code::cast(result)), RelocInfo::CODE_TARGET); |
1001 return result; | 1003 return result; |
1002 } | 1004 } |
1003 | 1005 |
1004 | 1006 |
1005 void MacroAssembler::StubReturn(int argc) { | 1007 void MacroAssembler::StubReturn(int argc) { |
1006 ASSERT(argc >= 1 && generating_stub()); | 1008 ASSERT(argc >= 1 && generating_stub()); |
1007 ret((argc - 1) * kPointerSize); | 1009 ret((argc - 1) * kPointerSize); |
1008 } | 1010 } |
1009 | 1011 |
1010 | 1012 |
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1033 mov(index, hash); | 1035 mov(index, hash); |
1034 } | 1036 } |
1035 } | 1037 } |
1036 | 1038 |
1037 | 1039 |
1038 void MacroAssembler::CallRuntime(Runtime::FunctionId id, int num_arguments) { | 1040 void MacroAssembler::CallRuntime(Runtime::FunctionId id, int num_arguments) { |
1039 CallRuntime(Runtime::FunctionForId(id), num_arguments); | 1041 CallRuntime(Runtime::FunctionForId(id), num_arguments); |
1040 } | 1042 } |
1041 | 1043 |
1042 | 1044 |
1043 Object* MacroAssembler::TryCallRuntime(Runtime::FunctionId id, | 1045 MaybeObject* MacroAssembler::TryCallRuntime(Runtime::FunctionId id, |
1044 int num_arguments) { | 1046 int num_arguments) { |
1045 return TryCallRuntime(Runtime::FunctionForId(id), num_arguments); | 1047 return TryCallRuntime(Runtime::FunctionForId(id), num_arguments); |
1046 } | 1048 } |
1047 | 1049 |
1048 | 1050 |
1049 void MacroAssembler::CallRuntime(Runtime::Function* f, int num_arguments) { | 1051 void MacroAssembler::CallRuntime(Runtime::Function* f, int num_arguments) { |
1050 // If the expected number of arguments of the runtime function is | 1052 // If the expected number of arguments of the runtime function is |
1051 // constant, we check that the actual number of arguments match the | 1053 // constant, we check that the actual number of arguments match the |
1052 // expectation. | 1054 // expectation. |
1053 if (f->nargs >= 0 && f->nargs != num_arguments) { | 1055 if (f->nargs >= 0 && f->nargs != num_arguments) { |
1054 IllegalOperation(num_arguments); | 1056 IllegalOperation(num_arguments); |
1055 return; | 1057 return; |
1056 } | 1058 } |
1057 | 1059 |
1058 // TODO(1236192): Most runtime routines don't need the number of | 1060 // TODO(1236192): Most runtime routines don't need the number of |
1059 // arguments passed in because it is constant. At some point we | 1061 // arguments passed in because it is constant. At some point we |
1060 // should remove this need and make the runtime routine entry code | 1062 // should remove this need and make the runtime routine entry code |
1061 // smarter. | 1063 // smarter. |
1062 Set(eax, Immediate(num_arguments)); | 1064 Set(eax, Immediate(num_arguments)); |
1063 mov(ebx, Immediate(ExternalReference(f))); | 1065 mov(ebx, Immediate(ExternalReference(f))); |
1064 CEntryStub ces(1); | 1066 CEntryStub ces(1); |
1065 CallStub(&ces); | 1067 CallStub(&ces); |
1066 } | 1068 } |
1067 | 1069 |
1068 | 1070 |
1069 Object* MacroAssembler::TryCallRuntime(Runtime::Function* f, | 1071 MaybeObject* MacroAssembler::TryCallRuntime(Runtime::Function* f, |
1070 int num_arguments) { | 1072 int num_arguments) { |
1071 if (f->nargs >= 0 && f->nargs != num_arguments) { | 1073 if (f->nargs >= 0 && f->nargs != num_arguments) { |
1072 IllegalOperation(num_arguments); | 1074 IllegalOperation(num_arguments); |
1073 // Since we did not call the stub, there was no allocation failure. | 1075 // Since we did not call the stub, there was no allocation failure. |
1074 // Return some non-failure object. | 1076 // Return some non-failure object. |
1075 return Heap::undefined_value(); | 1077 return Heap::undefined_value(); |
1076 } | 1078 } |
1077 | 1079 |
1078 // TODO(1236192): Most runtime routines don't need the number of | 1080 // TODO(1236192): Most runtime routines don't need the number of |
1079 // arguments passed in because it is constant. At some point we | 1081 // arguments passed in because it is constant. At some point we |
1080 // should remove this need and make the runtime routine entry code | 1082 // should remove this need and make the runtime routine entry code |
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1762 | 1764 |
1763 // Check that the code was patched as expected. | 1765 // Check that the code was patched as expected. |
1764 ASSERT(masm_.pc_ == address_ + size_); | 1766 ASSERT(masm_.pc_ == address_ + size_); |
1765 ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); | 1767 ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
1766 } | 1768 } |
1767 | 1769 |
1768 | 1770 |
1769 } } // namespace v8::internal | 1771 } } // namespace v8::internal |
1770 | 1772 |
1771 #endif // V8_TARGET_ARCH_IA32 | 1773 #endif // V8_TARGET_ARCH_IA32 |
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