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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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| 158 } | 158 } |
| 159 | 159 |
| 160 | 160 |
| 161 void StubCache::GenerateProbe(MacroAssembler* masm, | 161 void StubCache::GenerateProbe(MacroAssembler* masm, |
| 162 Code::Flags flags, | 162 Code::Flags flags, |
| 163 Register receiver, | 163 Register receiver, |
| 164 Register name, | 164 Register name, |
| 165 Register scratch, | 165 Register scratch, |
| 166 Register extra, | 166 Register extra, |
| 167 Register extra2) { | 167 Register extra2) { |
| 168 Isolate* isolate = Isolate::Current(); | |
| 169 Label miss; | 168 Label miss; |
| 170 USE(extra2); // The register extra2 is not used on the ia32 platform. | |
| 171 | 169 |
| 172 // Make sure that code is valid. The shifting code relies on the | 170 // Assert that code is valid. The shifting code relies on the entry size |
| 173 // entry size being 8. | 171 // being 8. |
| 174 ASSERT(sizeof(Entry) == 8); | 172 ASSERT(sizeof(Entry) == 8); |
| 175 | 173 |
| 176 // Make sure the flags does not name a specific type. | 174 // Assert the flags do not name a specific type. |
| 177 ASSERT(Code::ExtractTypeFromFlags(flags) == 0); | 175 ASSERT(Code::ExtractTypeFromFlags(flags) == 0); |
| 178 | 176 |
| 179 // Make sure that there are no register conflicts. | 177 // Assert that there are no register conflicts. |
| 180 ASSERT(!scratch.is(receiver)); | 178 ASSERT(!scratch.is(receiver)); |
| 181 ASSERT(!scratch.is(name)); | 179 ASSERT(!scratch.is(name)); |
| 182 ASSERT(!extra.is(receiver)); | 180 ASSERT(!extra.is(receiver)); |
| 183 ASSERT(!extra.is(name)); | 181 ASSERT(!extra.is(name)); |
| 184 ASSERT(!extra.is(scratch)); | 182 ASSERT(!extra.is(scratch)); |
| 185 | 183 |
| 186 // Check scratch and extra registers are valid, and extra2 is unused. | 184 // Assert scratch and extra registers are valid, and extra2 is unused. |
| 187 ASSERT(!scratch.is(no_reg)); | 185 ASSERT(!scratch.is(no_reg)); |
| 188 ASSERT(extra2.is(no_reg)); | 186 ASSERT(extra2.is(no_reg)); |
| 189 | 187 |
| 190 // Check that the receiver isn't a smi. | 188 // Check that the receiver isn't a smi. |
| 191 __ JumpIfSmi(receiver, &miss); | 189 __ JumpIfSmi(receiver, &miss); |
| 192 | 190 |
| 193 // Get the map of the receiver and compute the hash. | 191 // Get the map of the receiver and compute the hash. |
| 194 __ mov(scratch, FieldOperand(name, String::kHashFieldOffset)); | 192 __ mov(scratch, FieldOperand(name, String::kHashFieldOffset)); |
| 195 __ add(scratch, FieldOperand(receiver, HeapObject::kMapOffset)); | 193 __ add(scratch, FieldOperand(receiver, HeapObject::kMapOffset)); |
| 196 __ xor_(scratch, flags); | 194 __ xor_(scratch, flags); |
| 197 __ and_(scratch, (kPrimaryTableSize - 1) << kHeapObjectTagSize); | 195 __ and_(scratch, (kPrimaryTableSize - 1) << kHeapObjectTagSize); |
| 198 | 196 |
| 199 // Probe the primary table. | 197 // Probe the primary table. |
| 200 ProbeTable(isolate, masm, flags, kPrimary, name, scratch, extra); | 198 ProbeTable(isolate(), masm, flags, kPrimary, name, scratch, extra); |
| 201 | 199 |
| 202 // Primary miss: Compute hash for secondary probe. | 200 // Primary miss: Compute hash for secondary probe. |
| 203 __ mov(scratch, FieldOperand(name, String::kHashFieldOffset)); | 201 __ mov(scratch, FieldOperand(name, String::kHashFieldOffset)); |
| 204 __ add(scratch, FieldOperand(receiver, HeapObject::kMapOffset)); | 202 __ add(scratch, FieldOperand(receiver, HeapObject::kMapOffset)); |
| 205 __ xor_(scratch, flags); | 203 __ xor_(scratch, flags); |
| 206 __ and_(scratch, (kPrimaryTableSize - 1) << kHeapObjectTagSize); | 204 __ and_(scratch, (kPrimaryTableSize - 1) << kHeapObjectTagSize); |
| 207 __ sub(scratch, name); | 205 __ sub(scratch, name); |
| 208 __ add(scratch, Immediate(flags)); | 206 __ add(scratch, Immediate(flags)); |
| 209 __ and_(scratch, (kSecondaryTableSize - 1) << kHeapObjectTagSize); | 207 __ and_(scratch, (kSecondaryTableSize - 1) << kHeapObjectTagSize); |
| 210 | 208 |
| 211 // Probe the secondary table. | 209 // Probe the secondary table. |
| 212 ProbeTable(isolate, masm, flags, kSecondary, name, scratch, extra); | 210 ProbeTable(isolate(), masm, flags, kSecondary, name, scratch, extra); |
| 213 | 211 |
| 214 // Cache miss: Fall-through and let caller handle the miss by | 212 // Cache miss: Fall-through and let caller handle the miss by |
| 215 // entering the runtime system. | 213 // entering the runtime system. |
| 216 __ bind(&miss); | 214 __ bind(&miss); |
| 217 } | 215 } |
| 218 | 216 |
| 219 | 217 |
| 220 void StubCompiler::GenerateLoadGlobalFunctionPrototype(MacroAssembler* masm, | 218 void StubCompiler::GenerateLoadGlobalFunctionPrototype(MacroAssembler* masm, |
| 221 int index, | 219 int index, |
| 222 Register prototype) { | 220 Register prototype) { |
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| 4018 Handle<Code> ic_miss = masm->isolate()->builtins()->KeyedStoreIC_Miss(); | 4016 Handle<Code> ic_miss = masm->isolate()->builtins()->KeyedStoreIC_Miss(); |
| 4019 __ jmp(ic_miss, RelocInfo::CODE_TARGET); | 4017 __ jmp(ic_miss, RelocInfo::CODE_TARGET); |
| 4020 } | 4018 } |
| 4021 | 4019 |
| 4022 | 4020 |
| 4023 #undef __ | 4021 #undef __ |
| 4024 | 4022 |
| 4025 } } // namespace v8::internal | 4023 } } // namespace v8::internal |
| 4026 | 4024 |
| 4027 #endif // V8_TARGET_ARCH_IA32 | 4025 #endif // V8_TARGET_ARCH_IA32 |
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