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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 // 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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881 void MacroAssembler::VmovLow(DwVfpRegister dst, Register src) { | 881 void MacroAssembler::VmovLow(DwVfpRegister dst, Register src) { |
882 if (dst.code() < 16) { | 882 if (dst.code() < 16) { |
883 const LowDwVfpRegister loc = LowDwVfpRegister::from_code(dst.code()); | 883 const LowDwVfpRegister loc = LowDwVfpRegister::from_code(dst.code()); |
884 vmov(loc.low(), src); | 884 vmov(loc.low(), src); |
885 } else { | 885 } else { |
886 vmov(dst, VmovIndexLo, src); | 886 vmov(dst, VmovIndexLo, src); |
887 } | 887 } |
888 } | 888 } |
889 | 889 |
890 | 890 |
| 891 void MacroAssembler::LoadConstantPoolPointerRegister() { |
| 892 if (FLAG_enable_ool_constant_pool) { |
| 893 int constant_pool_offset = Code::kConstantPoolOffset - Code::kHeaderSize - |
| 894 pc_offset() - Instruction::kPCReadOffset; |
| 895 ASSERT(ImmediateFitsAddrMode2Instruction(constant_pool_offset)); |
| 896 ldr(pp, MemOperand(pc, constant_pool_offset)); |
| 897 } |
| 898 } |
| 899 |
| 900 |
891 void MacroAssembler::Prologue(PrologueFrameMode frame_mode) { | 901 void MacroAssembler::Prologue(PrologueFrameMode frame_mode) { |
892 if (frame_mode == BUILD_STUB_FRAME) { | 902 if (frame_mode == BUILD_STUB_FRAME) { |
893 PushFixedFrame(); | 903 PushFixedFrame(); |
894 Push(Smi::FromInt(StackFrame::STUB)); | 904 Push(Smi::FromInt(StackFrame::STUB)); |
895 // Adjust FP to point to saved FP. | 905 // Adjust FP to point to saved FP. |
896 add(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); | 906 add(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); |
897 } else { | 907 } else { |
898 PredictableCodeSizeScope predictible_code_size_scope( | 908 PredictableCodeSizeScope predictible_code_size_scope( |
899 this, kNoCodeAgeSequenceLength * Assembler::kInstrSize); | 909 this, kNoCodeAgeSequenceLength * Assembler::kInstrSize); |
900 // The following three instructions must remain together and unmodified | 910 // The following three instructions must remain together and unmodified |
901 // for code aging to work properly. | 911 // for code aging to work properly. |
902 if (isolate()->IsCodePreAgingActive()) { | 912 if (isolate()->IsCodePreAgingActive()) { |
903 // Pre-age the code. | 913 // Pre-age the code. |
904 Code* stub = Code::GetPreAgedCodeAgeStub(isolate()); | 914 Code* stub = Code::GetPreAgedCodeAgeStub(isolate()); |
905 add(r0, pc, Operand(-8)); | 915 add(r0, pc, Operand(-8)); |
906 ldr(pc, MemOperand(pc, -4)); | 916 ldr(pc, MemOperand(pc, -4)); |
907 emit_code_stub_address(stub); | 917 emit_code_stub_address(stub); |
908 } else { | 918 } else { |
909 PushFixedFrame(r1); | 919 PushFixedFrame(r1); |
910 nop(ip.code()); | 920 nop(ip.code()); |
911 // Adjust FP to point to saved FP. | 921 // Adjust FP to point to saved FP. |
912 add(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); | 922 add(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); |
913 } | 923 } |
914 } | 924 } |
| 925 if (FLAG_enable_ool_constant_pool) { |
| 926 LoadConstantPoolPointerRegister(); |
| 927 set_constant_pool_available(true); |
| 928 } |
915 } | 929 } |
916 | 930 |
917 | 931 |
918 void MacroAssembler::LoadConstantPoolPointerRegister() { | 932 void MacroAssembler::EnterFrame(StackFrame::Type type, |
919 if (FLAG_enable_ool_constant_pool) { | 933 bool load_constant_pool) { |
920 int constant_pool_offset = | |
921 Code::kConstantPoolOffset - Code::kHeaderSize - pc_offset() - 8; | |
922 ASSERT(ImmediateFitsAddrMode2Instruction(constant_pool_offset)); | |
923 ldr(pp, MemOperand(pc, constant_pool_offset)); | |
924 } | |
925 } | |
926 | |
927 | |
928 void MacroAssembler::EnterFrame(StackFrame::Type type) { | |
929 // r0-r3: preserved | 934 // r0-r3: preserved |
930 PushFixedFrame(); | 935 PushFixedFrame(); |
| 936 if (FLAG_enable_ool_constant_pool && load_constant_pool) { |
| 937 LoadConstantPoolPointerRegister(); |
| 938 } |
931 mov(ip, Operand(Smi::FromInt(type))); | 939 mov(ip, Operand(Smi::FromInt(type))); |
932 push(ip); | 940 push(ip); |
933 mov(ip, Operand(CodeObject())); | 941 mov(ip, Operand(CodeObject())); |
934 push(ip); | 942 push(ip); |
935 // Adjust FP to point to saved FP. | 943 // Adjust FP to point to saved FP. |
936 add(fp, sp, | 944 add(fp, sp, |
937 Operand(StandardFrameConstants::kFixedFrameSizeFromFp + kPointerSize)); | 945 Operand(StandardFrameConstants::kFixedFrameSizeFromFp + kPointerSize)); |
938 } | 946 } |
939 | 947 |
940 | 948 |
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968 Push(lr, fp); | 976 Push(lr, fp); |
969 mov(fp, Operand(sp)); // Set up new frame pointer. | 977 mov(fp, Operand(sp)); // Set up new frame pointer. |
970 // Reserve room for saved entry sp and code object. | 978 // Reserve room for saved entry sp and code object. |
971 sub(sp, sp, Operand(ExitFrameConstants::kFrameSize)); | 979 sub(sp, sp, Operand(ExitFrameConstants::kFrameSize)); |
972 if (emit_debug_code()) { | 980 if (emit_debug_code()) { |
973 mov(ip, Operand::Zero()); | 981 mov(ip, Operand::Zero()); |
974 str(ip, MemOperand(fp, ExitFrameConstants::kSPOffset)); | 982 str(ip, MemOperand(fp, ExitFrameConstants::kSPOffset)); |
975 } | 983 } |
976 if (FLAG_enable_ool_constant_pool) { | 984 if (FLAG_enable_ool_constant_pool) { |
977 str(pp, MemOperand(fp, ExitFrameConstants::kConstantPoolOffset)); | 985 str(pp, MemOperand(fp, ExitFrameConstants::kConstantPoolOffset)); |
| 986 LoadConstantPoolPointerRegister(); |
978 } | 987 } |
979 mov(ip, Operand(CodeObject())); | 988 mov(ip, Operand(CodeObject())); |
980 str(ip, MemOperand(fp, ExitFrameConstants::kCodeOffset)); | 989 str(ip, MemOperand(fp, ExitFrameConstants::kCodeOffset)); |
981 | 990 |
982 // Save the frame pointer and the context in top. | 991 // Save the frame pointer and the context in top. |
983 mov(ip, Operand(ExternalReference(Isolate::kCEntryFPAddress, isolate()))); | 992 mov(ip, Operand(ExternalReference(Isolate::kCEntryFPAddress, isolate()))); |
984 str(fp, MemOperand(ip)); | 993 str(fp, MemOperand(ip)); |
985 mov(ip, Operand(ExternalReference(Isolate::kContextAddress, isolate()))); | 994 mov(ip, Operand(ExternalReference(Isolate::kContextAddress, isolate()))); |
986 str(cp, MemOperand(ip)); | 995 str(cp, MemOperand(ip)); |
987 | 996 |
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4047 if (divisor < 0 && ms.multiplier() > 0) { | 4056 if (divisor < 0 && ms.multiplier() > 0) { |
4048 sub(result, result, Operand(dividend)); | 4057 sub(result, result, Operand(dividend)); |
4049 } | 4058 } |
4050 if (ms.shift() > 0) mov(result, Operand(result, ASR, ms.shift())); | 4059 if (ms.shift() > 0) mov(result, Operand(result, ASR, ms.shift())); |
4051 } | 4060 } |
4052 | 4061 |
4053 | 4062 |
4054 } } // namespace v8::internal | 4063 } } // namespace v8::internal |
4055 | 4064 |
4056 #endif // V8_TARGET_ARCH_ARM | 4065 #endif // V8_TARGET_ARCH_ARM |
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