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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #if V8_TARGET_ARCH_IA32 | 5 #if V8_TARGET_ARCH_IA32 |
| 6 | 6 |
| 7 #include "src/codegen.h" | 7 #include "src/codegen.h" |
| 8 #include "src/ic/ic.h" | 8 #include "src/ic/ic.h" |
| 9 #include "src/ic/stub-cache.h" | 9 #include "src/ic/stub-cache.h" |
| 10 #include "src/interface-descriptors.h" | 10 #include "src/interface-descriptors.h" |
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| 59 __ jmp(&miss); | 59 __ jmp(&miss); |
| 60 } else if (FLAG_test_primary_stub_cache && table == StubCache::kSecondary) { | 60 } else if (FLAG_test_primary_stub_cache && table == StubCache::kSecondary) { |
| 61 __ jmp(&miss); | 61 __ jmp(&miss); |
| 62 } | 62 } |
| 63 #endif | 63 #endif |
| 64 | 64 |
| 65 // The vector and slot were pushed onto the stack before starting the | 65 // The vector and slot were pushed onto the stack before starting the |
| 66 // probe, and need to be dropped before calling the handler. | 66 // probe, and need to be dropped before calling the handler. |
| 67 if (is_vector_store) { | 67 if (is_vector_store) { |
| 68 // The overlap here is rather embarrassing. One does what one must. | 68 // The overlap here is rather embarrassing. One does what one must. |
| 69 Register vector = VectorStoreICDescriptor::VectorRegister(); | 69 Register vector = StoreWithVectorDescriptor::VectorRegister(); |
| 70 DCHECK(extra.is(VectorStoreICDescriptor::SlotRegister())); | 70 DCHECK(extra.is(StoreWithVectorDescriptor::SlotRegister())); |
| 71 __ add(extra, Immediate(Code::kHeaderSize - kHeapObjectTag)); | 71 __ add(extra, Immediate(Code::kHeaderSize - kHeapObjectTag)); |
| 72 __ pop(vector); | 72 __ pop(vector); |
| 73 __ mov(Operand::StaticVariable(virtual_register), extra); | 73 __ mov(Operand::StaticVariable(virtual_register), extra); |
| 74 __ pop(extra); // Pop "slot". | 74 __ pop(extra); // Pop "slot". |
| 75 // Jump to the first instruction in the code stub. | 75 // Jump to the first instruction in the code stub. |
| 76 __ jmp(Operand::StaticVariable(virtual_register)); | 76 __ jmp(Operand::StaticVariable(virtual_register)); |
| 77 } else { | 77 } else { |
| 78 __ pop(LoadWithVectorDescriptor::VectorRegister()); | 78 __ pop(LoadWithVectorDescriptor::VectorRegister()); |
| 79 __ pop(LoadDescriptor::SlotRegister()); | 79 __ pop(LoadDescriptor::SlotRegister()); |
| 80 __ add(extra, Immediate(Code::kHeaderSize - kHeapObjectTag)); | 80 __ add(extra, Immediate(Code::kHeaderSize - kHeapObjectTag)); |
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| 120 #endif | 120 #endif |
| 121 | 121 |
| 122 // Restore offset and re-load code entry from cache. | 122 // Restore offset and re-load code entry from cache. |
| 123 __ pop(offset); | 123 __ pop(offset); |
| 124 __ mov(offset, Operand::StaticArray(offset, times_1, value_offset)); | 124 __ mov(offset, Operand::StaticArray(offset, times_1, value_offset)); |
| 125 | 125 |
| 126 // Jump to the first instruction in the code stub. | 126 // Jump to the first instruction in the code stub. |
| 127 if (is_vector_store) { | 127 if (is_vector_store) { |
| 128 // The vector and slot were pushed onto the stack before starting the | 128 // The vector and slot were pushed onto the stack before starting the |
| 129 // probe, and need to be dropped before calling the handler. | 129 // probe, and need to be dropped before calling the handler. |
| 130 Register vector = VectorStoreICDescriptor::VectorRegister(); | 130 Register vector = StoreWithVectorDescriptor::VectorRegister(); |
| 131 DCHECK(offset.is(VectorStoreICDescriptor::SlotRegister())); | 131 DCHECK(offset.is(StoreWithVectorDescriptor::SlotRegister())); |
| 132 __ add(offset, Immediate(Code::kHeaderSize - kHeapObjectTag)); | 132 __ add(offset, Immediate(Code::kHeaderSize - kHeapObjectTag)); |
| 133 __ mov(Operand::StaticVariable(virtual_register), offset); | 133 __ mov(Operand::StaticVariable(virtual_register), offset); |
| 134 __ pop(vector); | 134 __ pop(vector); |
| 135 __ pop(offset); // Pop "slot". | 135 __ pop(offset); // Pop "slot". |
| 136 __ jmp(Operand::StaticVariable(virtual_register)); | 136 __ jmp(Operand::StaticVariable(virtual_register)); |
| 137 } else { | 137 } else { |
| 138 __ add(offset, Immediate(Code::kHeaderSize - kHeapObjectTag)); | 138 __ add(offset, Immediate(Code::kHeaderSize - kHeapObjectTag)); |
| 139 __ jmp(offset); | 139 __ jmp(offset); |
| 140 } | 140 } |
| 141 | 141 |
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| 203 __ bind(&miss); | 203 __ bind(&miss); |
| 204 __ IncrementCounter(counters->megamorphic_stub_cache_misses(), 1); | 204 __ IncrementCounter(counters->megamorphic_stub_cache_misses(), 1); |
| 205 } | 205 } |
| 206 | 206 |
| 207 | 207 |
| 208 #undef __ | 208 #undef __ |
| 209 } // namespace internal | 209 } // namespace internal |
| 210 } // namespace v8 | 210 } // namespace v8 |
| 211 | 211 |
| 212 #endif // V8_TARGET_ARCH_IA32 | 212 #endif // V8_TARGET_ARCH_IA32 |
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