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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_X87 | 5 #if V8_TARGET_ARCH_X87 |
| 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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| 57 __ jmp(&miss); | 57 __ jmp(&miss); |
| 58 } else if (FLAG_test_primary_stub_cache && table == StubCache::kSecondary) { | 58 } else if (FLAG_test_primary_stub_cache && table == StubCache::kSecondary) { |
| 59 __ jmp(&miss); | 59 __ jmp(&miss); |
| 60 } | 60 } |
| 61 #endif | 61 #endif |
| 62 | 62 |
| 63 // The vector and slot were pushed onto the stack before starting the | 63 // The vector and slot were pushed onto the stack before starting the |
| 64 // probe, and need to be dropped before calling the handler. | 64 // probe, and need to be dropped before calling the handler. |
| 65 if (is_vector_store) { | 65 if (is_vector_store) { |
| 66 // The overlap here is rather embarrassing. One does what one must. | 66 // The overlap here is rather embarrassing. One does what one must. |
| 67 Register vector = VectorStoreICDescriptor::VectorRegister(); | 67 Register vector = StoreWithVectorDescriptor::VectorRegister(); |
| 68 DCHECK(extra.is(VectorStoreICDescriptor::SlotRegister())); | 68 DCHECK(extra.is(StoreWithVectorDescriptor::SlotRegister())); |
| 69 __ add(extra, Immediate(Code::kHeaderSize - kHeapObjectTag)); | 69 __ add(extra, Immediate(Code::kHeaderSize - kHeapObjectTag)); |
| 70 __ pop(vector); | 70 __ pop(vector); |
| 71 __ mov(Operand::StaticVariable(virtual_register), extra); | 71 __ mov(Operand::StaticVariable(virtual_register), extra); |
| 72 __ pop(extra); // Pop "slot". | 72 __ pop(extra); // Pop "slot". |
| 73 // Jump to the first instruction in the code stub. | 73 // Jump to the first instruction in the code stub. |
| 74 __ jmp(Operand::StaticVariable(virtual_register)); | 74 __ jmp(Operand::StaticVariable(virtual_register)); |
| 75 } else { | 75 } else { |
| 76 __ pop(LoadWithVectorDescriptor::VectorRegister()); | 76 __ pop(LoadWithVectorDescriptor::VectorRegister()); |
| 77 __ pop(LoadDescriptor::SlotRegister()); | 77 __ pop(LoadDescriptor::SlotRegister()); |
| 78 __ add(extra, Immediate(Code::kHeaderSize - kHeapObjectTag)); | 78 __ add(extra, Immediate(Code::kHeaderSize - kHeapObjectTag)); |
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| 116 #endif | 116 #endif |
| 117 | 117 |
| 118 // Restore offset and re-load code entry from cache. | 118 // Restore offset and re-load code entry from cache. |
| 119 __ pop(offset); | 119 __ pop(offset); |
| 120 __ mov(offset, Operand::StaticArray(offset, times_1, value_offset)); | 120 __ mov(offset, Operand::StaticArray(offset, times_1, value_offset)); |
| 121 | 121 |
| 122 // Jump to the first instruction in the code stub. | 122 // Jump to the first instruction in the code stub. |
| 123 if (is_vector_store) { | 123 if (is_vector_store) { |
| 124 // The vector and slot were pushed onto the stack before starting the | 124 // The vector and slot were pushed onto the stack before starting the |
| 125 // probe, and need to be dropped before calling the handler. | 125 // probe, and need to be dropped before calling the handler. |
| 126 Register vector = VectorStoreICDescriptor::VectorRegister(); | 126 Register vector = StoreWithVectorDescriptor::VectorRegister(); |
| 127 DCHECK(offset.is(VectorStoreICDescriptor::SlotRegister())); | 127 DCHECK(offset.is(StoreWithVectorDescriptor::SlotRegister())); |
| 128 __ add(offset, Immediate(Code::kHeaderSize - kHeapObjectTag)); | 128 __ add(offset, Immediate(Code::kHeaderSize - kHeapObjectTag)); |
| 129 __ mov(Operand::StaticVariable(virtual_register), offset); | 129 __ mov(Operand::StaticVariable(virtual_register), offset); |
| 130 __ pop(vector); | 130 __ pop(vector); |
| 131 __ pop(offset); // Pop "slot". | 131 __ pop(offset); // Pop "slot". |
| 132 __ jmp(Operand::StaticVariable(virtual_register)); | 132 __ jmp(Operand::StaticVariable(virtual_register)); |
| 133 } else { | 133 } else { |
| 134 __ add(offset, Immediate(Code::kHeaderSize - kHeapObjectTag)); | 134 __ add(offset, Immediate(Code::kHeaderSize - kHeapObjectTag)); |
| 135 __ jmp(offset); | 135 __ jmp(offset); |
| 136 } | 136 } |
| 137 | 137 |
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| 207 __ bind(&miss); | 207 __ bind(&miss); |
| 208 __ IncrementCounter(counters->megamorphic_stub_cache_misses(), 1); | 208 __ IncrementCounter(counters->megamorphic_stub_cache_misses(), 1); |
| 209 } | 209 } |
| 210 | 210 |
| 211 | 211 |
| 212 #undef __ | 212 #undef __ |
| 213 } // namespace internal | 213 } // namespace internal |
| 214 } // namespace v8 | 214 } // namespace v8 |
| 215 | 215 |
| 216 #endif // V8_TARGET_ARCH_X87 | 216 #endif // V8_TARGET_ARCH_X87 |
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