OLD | NEW |
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_ARM | 5 #if V8_TARGET_ARCH_ARM |
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" |
(...skipping 825 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
836 Address cmp_instruction_address = | 836 Address cmp_instruction_address = |
837 Assembler::return_address_from_call_start(address); | 837 Assembler::return_address_from_call_start(address); |
838 | 838 |
839 // If the instruction following the call is not a cmp rx, #yyy, nothing | 839 // If the instruction following the call is not a cmp rx, #yyy, nothing |
840 // was inlined. | 840 // was inlined. |
841 Instr instr = Assembler::instr_at(cmp_instruction_address); | 841 Instr instr = Assembler::instr_at(cmp_instruction_address); |
842 return Assembler::IsCmpImmediate(instr); | 842 return Assembler::IsCmpImmediate(instr); |
843 } | 843 } |
844 | 844 |
845 | 845 |
846 void PatchInlinedSmiCode(Address address, InlinedSmiCheck check) { | 846 void PatchInlinedSmiCode(Isolate* isolate, Address address, |
| 847 InlinedSmiCheck check) { |
847 Address cmp_instruction_address = | 848 Address cmp_instruction_address = |
848 Assembler::return_address_from_call_start(address); | 849 Assembler::return_address_from_call_start(address); |
849 | 850 |
850 // If the instruction following the call is not a cmp rx, #yyy, nothing | 851 // If the instruction following the call is not a cmp rx, #yyy, nothing |
851 // was inlined. | 852 // was inlined. |
852 Instr instr = Assembler::instr_at(cmp_instruction_address); | 853 Instr instr = Assembler::instr_at(cmp_instruction_address); |
853 if (!Assembler::IsCmpImmediate(instr)) { | 854 if (!Assembler::IsCmpImmediate(instr)) { |
854 return; | 855 return; |
855 } | 856 } |
856 | 857 |
(...skipping 18 matching lines...) Expand all Loading... |
875 Instr branch_instr = | 876 Instr branch_instr = |
876 Assembler::instr_at(patch_address + Instruction::kInstrSize); | 877 Assembler::instr_at(patch_address + Instruction::kInstrSize); |
877 // This is patching a conditional "jump if not smi/jump if smi" site. | 878 // This is patching a conditional "jump if not smi/jump if smi" site. |
878 // Enabling by changing from | 879 // Enabling by changing from |
879 // cmp rx, rx | 880 // cmp rx, rx |
880 // b eq/ne, <target> | 881 // b eq/ne, <target> |
881 // to | 882 // to |
882 // tst rx, #kSmiTagMask | 883 // tst rx, #kSmiTagMask |
883 // b ne/eq, <target> | 884 // b ne/eq, <target> |
884 // and vice-versa to be disabled again. | 885 // and vice-versa to be disabled again. |
885 CodePatcher patcher(patch_address, 2); | 886 CodePatcher patcher(isolate, patch_address, 2); |
886 Register reg = Assembler::GetRn(instr_at_patch); | 887 Register reg = Assembler::GetRn(instr_at_patch); |
887 if (check == ENABLE_INLINED_SMI_CHECK) { | 888 if (check == ENABLE_INLINED_SMI_CHECK) { |
888 DCHECK(Assembler::IsCmpRegister(instr_at_patch)); | 889 DCHECK(Assembler::IsCmpRegister(instr_at_patch)); |
889 DCHECK_EQ(Assembler::GetRn(instr_at_patch).code(), | 890 DCHECK_EQ(Assembler::GetRn(instr_at_patch).code(), |
890 Assembler::GetRm(instr_at_patch).code()); | 891 Assembler::GetRm(instr_at_patch).code()); |
891 patcher.masm()->tst(reg, Operand(kSmiTagMask)); | 892 patcher.masm()->tst(reg, Operand(kSmiTagMask)); |
892 } else { | 893 } else { |
893 DCHECK(check == DISABLE_INLINED_SMI_CHECK); | 894 DCHECK(check == DISABLE_INLINED_SMI_CHECK); |
894 DCHECK(Assembler::IsTstImmediate(instr_at_patch)); | 895 DCHECK(Assembler::IsTstImmediate(instr_at_patch)); |
895 patcher.masm()->cmp(reg, reg); | 896 patcher.masm()->cmp(reg, reg); |
896 } | 897 } |
897 DCHECK(Assembler::IsBranch(branch_instr)); | 898 DCHECK(Assembler::IsBranch(branch_instr)); |
898 if (Assembler::GetCondition(branch_instr) == eq) { | 899 if (Assembler::GetCondition(branch_instr) == eq) { |
899 patcher.EmitCondition(ne); | 900 patcher.EmitCondition(ne); |
900 } else { | 901 } else { |
901 DCHECK(Assembler::GetCondition(branch_instr) == ne); | 902 DCHECK(Assembler::GetCondition(branch_instr) == ne); |
902 patcher.EmitCondition(eq); | 903 patcher.EmitCondition(eq); |
903 } | 904 } |
904 } | 905 } |
905 } // namespace internal | 906 } // namespace internal |
906 } // namespace v8 | 907 } // namespace v8 |
907 | 908 |
908 #endif // V8_TARGET_ARCH_ARM | 909 #endif // V8_TARGET_ARCH_ARM |
OLD | NEW |