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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/ic-compiler.h" | 9 #include "src/ic/ic-compiler.h" |
| 10 #include "src/ic/stub-cache.h" | 10 #include "src/ic/stub-cache.h" |
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| 829 // The address of the instruction following the call. | 829 // The address of the instruction following the call. |
| 830 Address test_instruction_address = | 830 Address test_instruction_address = |
| 831 address + Assembler::kCallTargetAddressOffset; | 831 address + Assembler::kCallTargetAddressOffset; |
| 832 | 832 |
| 833 // If the instruction following the call is not a test al, nothing | 833 // If the instruction following the call is not a test al, nothing |
| 834 // was inlined. | 834 // was inlined. |
| 835 return *test_instruction_address == Assembler::kTestAlByte; | 835 return *test_instruction_address == Assembler::kTestAlByte; |
| 836 } | 836 } |
| 837 | 837 |
| 838 | 838 |
| 839 void PatchInlinedSmiCode(Address address, InlinedSmiCheck check) { | 839 void PatchInlinedSmiCode(Isolate* isolate, Address address, |
| 840 InlinedSmiCheck check) { |
| 840 // The address of the instruction following the call. | 841 // The address of the instruction following the call. |
| 841 Address test_instruction_address = | 842 Address test_instruction_address = |
| 842 address + Assembler::kCallTargetAddressOffset; | 843 address + Assembler::kCallTargetAddressOffset; |
| 843 | 844 |
| 844 // If the instruction following the call is not a test al, nothing | 845 // If the instruction following the call is not a test al, nothing |
| 845 // was inlined. | 846 // was inlined. |
| 846 if (*test_instruction_address != Assembler::kTestAlByte) { | 847 if (*test_instruction_address != Assembler::kTestAlByte) { |
| 847 DCHECK(*test_instruction_address == Assembler::kNopByte); | 848 DCHECK(*test_instruction_address == Assembler::kNopByte); |
| 848 return; | 849 return; |
| 849 } | 850 } |
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| 869 Condition cc = | 870 Condition cc = |
| 870 (check == ENABLE_INLINED_SMI_CHECK) | 871 (check == ENABLE_INLINED_SMI_CHECK) |
| 871 ? (*jmp_address == Assembler::kJncShortOpcode ? not_zero : zero) | 872 ? (*jmp_address == Assembler::kJncShortOpcode ? not_zero : zero) |
| 872 : (*jmp_address == Assembler::kJnzShortOpcode ? not_carry : carry); | 873 : (*jmp_address == Assembler::kJnzShortOpcode ? not_carry : carry); |
| 873 *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc); | 874 *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc); |
| 874 } | 875 } |
| 875 } // namespace internal | 876 } // namespace internal |
| 876 } // namespace v8 | 877 } // namespace v8 |
| 877 | 878 |
| 878 #endif // V8_TARGET_ARCH_IA32 | 879 #endif // V8_TARGET_ARCH_IA32 |
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