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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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