/* * Copyright (C) 2011 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef ART_COMPILER_UTILS_MIPS_ASSEMBLER_MIPS_H_ #define ART_COMPILER_UTILS_MIPS_ASSEMBLER_MIPS_H_ #include #include "base/macros.h" #include "constants_mips.h" #include "globals.h" #include "managed_register_mips.h" #include "utils/assembler.h" #include "offsets.h" namespace art { namespace mips { enum LoadOperandType { kLoadSignedByte, kLoadUnsignedByte, kLoadSignedHalfword, kLoadUnsignedHalfword, kLoadWord, kLoadWordPair, kLoadSWord, kLoadDWord }; enum StoreOperandType { kStoreByte, kStoreHalfword, kStoreWord, kStoreWordPair, kStoreSWord, kStoreDWord }; class MipsAssembler FINAL : public Assembler { public: MipsAssembler() {} virtual ~MipsAssembler() {} // Emit Machine Instructions. void Add(Register rd, Register rs, Register rt); void Addu(Register rd, Register rs, Register rt); void Addi(Register rt, Register rs, uint16_t imm16); void Addiu(Register rt, Register rs, uint16_t imm16); void Sub(Register rd, Register rs, Register rt); void Subu(Register rd, Register rs, Register rt); void Mult(Register rs, Register rt); void Multu(Register rs, Register rt); void Div(Register rs, Register rt); void Divu(Register rs, Register rt); void And(Register rd, Register rs, Register rt); void Andi(Register rt, Register rs, uint16_t imm16); void Or(Register rd, Register rs, Register rt); void Ori(Register rt, Register rs, uint16_t imm16); void Xor(Register rd, Register rs, Register rt); void Xori(Register rt, Register rs, uint16_t imm16); void Nor(Register rd, Register rs, Register rt); void Sll(Register rd, Register rs, int shamt); void Srl(Register rd, Register rs, int shamt); void Sra(Register rd, Register rs, int shamt); void Sllv(Register rd, Register rs, Register rt); void Srlv(Register rd, Register rs, Register rt); void Srav(Register rd, Register rs, Register rt); void Lb(Register rt, Register rs, uint16_t imm16); void Lh(Register rt, Register rs, uint16_t imm16); void Lw(Register rt, Register rs, uint16_t imm16); void Lbu(Register rt, Register rs, uint16_t imm16); void Lhu(Register rt, Register rs, uint16_t imm16); void Lui(Register rt, uint16_t imm16); void Mfhi(Register rd); void Mflo(Register rd); void Sb(Register rt, Register rs, uint16_t imm16); void Sh(Register rt, Register rs, uint16_t imm16); void Sw(Register rt, Register rs, uint16_t imm16); void Slt(Register rd, Register rs, Register rt); void Sltu(Register rd, Register rs, Register rt); void Slti(Register rt, Register rs, uint16_t imm16); void Sltiu(Register rt, Register rs, uint16_t imm16); void Beq(Register rt, Register rs, uint16_t imm16); void Bne(Register rt, Register rs, uint16_t imm16); void J(uint32_t address); void Jal(uint32_t address); void Jr(Register rs); void Jalr(Register rs); void AddS(FRegister fd, FRegister fs, FRegister ft); void SubS(FRegister fd, FRegister fs, FRegister ft); void MulS(FRegister fd, FRegister fs, FRegister ft); void DivS(FRegister fd, FRegister fs, FRegister ft); void AddD(DRegister fd, DRegister fs, DRegister ft); void SubD(DRegister fd, DRegister fs, DRegister ft); void MulD(DRegister fd, DRegister fs, DRegister ft); void DivD(DRegister fd, DRegister fs, DRegister ft); void MovS(FRegister fd, FRegister fs); void MovD(DRegister fd, DRegister fs); void Mfc1(Register rt, FRegister fs); void Mtc1(FRegister ft, Register rs); void Lwc1(FRegister ft, Register rs, uint16_t imm16); void Ldc1(DRegister ft, Register rs, uint16_t imm16); void Swc1(FRegister ft, Register rs, uint16_t imm16); void Sdc1(DRegister ft, Register rs, uint16_t imm16); void Break(); void Nop(); void Move(Register rt, Register rs); void Clear(Register rt); void Not(Register rt, Register rs); void Mul(Register rd, Register rs, Register rt); void Div(Register rd, Register rs, Register rt); void Rem(Register rd, Register rs, Register rt); void AddConstant(Register rt, Register rs, int32_t value); void LoadImmediate(Register rt, int32_t value); void EmitLoad(ManagedRegister m_dst, Register src_register, int32_t src_offset, size_t size); void LoadFromOffset(LoadOperandType type, Register reg, Register base, int32_t offset); void LoadSFromOffset(FRegister reg, Register base, int32_t offset); void LoadDFromOffset(DRegister reg, Register base, int32_t offset); void StoreToOffset(StoreOperandType type, Register reg, Register base, int32_t offset); void StoreFToOffset(FRegister reg, Register base, int32_t offset); void StoreDToOffset(DRegister reg, Register base, int32_t offset); // Emit data (e.g. encoded instruction or immediate) to the instruction stream. void Emit(int32_t value); void EmitBranch(Register rt, Register rs, Label* label, bool equal); void EmitJump(Label* label, bool link); void Bind(Label* label, bool is_jump); // // Overridden common assembler high-level functionality // // Emit code that will create an activation on the stack void BuildFrame(size_t frame_size, ManagedRegister method_reg, const std::vector& callee_save_regs, const ManagedRegisterEntrySpills& entry_spills) OVERRIDE; // Emit code that will remove an activation from the stack void RemoveFrame(size_t frame_size, const std::vector& callee_save_regs) OVERRIDE; void IncreaseFrameSize(size_t adjust) OVERRIDE; void DecreaseFrameSize(size_t adjust) OVERRIDE; // Store routines void Store(FrameOffset offs, ManagedRegister msrc, size_t size) OVERRIDE; void StoreRef(FrameOffset dest, ManagedRegister msrc) OVERRIDE; void StoreRawPtr(FrameOffset dest, ManagedRegister msrc) OVERRIDE; void StoreImmediateToFrame(FrameOffset dest, uint32_t imm, ManagedRegister mscratch) OVERRIDE; void StoreImmediateToThread32(ThreadOffset<4> dest, uint32_t imm, ManagedRegister mscratch) OVERRIDE; void StoreStackOffsetToThread32(ThreadOffset<4> thr_offs, FrameOffset fr_offs, ManagedRegister mscratch) OVERRIDE; void StoreStackPointerToThread32(ThreadOffset<4> thr_offs) OVERRIDE; void StoreSpanning(FrameOffset dest, ManagedRegister msrc, FrameOffset in_off, ManagedRegister mscratch) OVERRIDE; // Load routines void Load(ManagedRegister mdest, FrameOffset src, size_t size) OVERRIDE; void LoadFromThread32(ManagedRegister mdest, ThreadOffset<4> src, size_t size) OVERRIDE; void LoadRef(ManagedRegister dest, FrameOffset src) OVERRIDE; void LoadRef(ManagedRegister mdest, ManagedRegister base, MemberOffset offs, bool poison_reference) OVERRIDE; void LoadRawPtr(ManagedRegister mdest, ManagedRegister base, Offset offs) OVERRIDE; void LoadRawPtrFromThread32(ManagedRegister mdest, ThreadOffset<4> offs) OVERRIDE; // Copying routines void Move(ManagedRegister mdest, ManagedRegister msrc, size_t size) OVERRIDE; void CopyRawPtrFromThread32(FrameOffset fr_offs, ThreadOffset<4> thr_offs, ManagedRegister mscratch) OVERRIDE; void CopyRawPtrToThread32(ThreadOffset<4> thr_offs, FrameOffset fr_offs, ManagedRegister mscratch) OVERRIDE; void CopyRef(FrameOffset dest, FrameOffset src, ManagedRegister mscratch) OVERRIDE; void Copy(FrameOffset dest, FrameOffset src, ManagedRegister mscratch, size_t size) OVERRIDE; void Copy(FrameOffset dest, ManagedRegister src_base, Offset src_offset, ManagedRegister mscratch, size_t size) OVERRIDE; void Copy(ManagedRegister dest_base, Offset dest_offset, FrameOffset src, ManagedRegister mscratch, size_t size) OVERRIDE; void Copy(FrameOffset dest, FrameOffset src_base, Offset src_offset, ManagedRegister mscratch, size_t size) OVERRIDE; void Copy(ManagedRegister dest, Offset dest_offset, ManagedRegister src, Offset src_offset, ManagedRegister mscratch, size_t size) OVERRIDE; void Copy(FrameOffset dest, Offset dest_offset, FrameOffset src, Offset src_offset, ManagedRegister mscratch, size_t size) OVERRIDE; void MemoryBarrier(ManagedRegister) OVERRIDE; // Sign extension void SignExtend(ManagedRegister mreg, size_t size) OVERRIDE; // Zero extension void ZeroExtend(ManagedRegister mreg, size_t size) OVERRIDE; // Exploit fast access in managed code to Thread::Current() void GetCurrentThread(ManagedRegister tr) OVERRIDE; void GetCurrentThread(FrameOffset dest_offset, ManagedRegister mscratch) OVERRIDE; // Set up out_reg to hold a Object** into the handle scope, or to be null if the // value is null and null_allowed. in_reg holds a possibly stale reference // that can be used to avoid loading the handle scope entry to see if the value is // null. void CreateHandleScopeEntry(ManagedRegister out_reg, FrameOffset handlescope_offset, ManagedRegister in_reg, bool null_allowed) OVERRIDE; // Set up out_off to hold a Object** into the handle scope, or to be null if the // value is null and null_allowed. void CreateHandleScopeEntry(FrameOffset out_off, FrameOffset handlescope_offset, ManagedRegister mscratch, bool null_allowed) OVERRIDE; // src holds a handle scope entry (Object**) load this into dst void LoadReferenceFromHandleScope(ManagedRegister dst, ManagedRegister src) OVERRIDE; // Heap::VerifyObject on src. In some cases (such as a reference to this) we // know that src may not be null. void VerifyObject(ManagedRegister src, bool could_be_null) OVERRIDE; void VerifyObject(FrameOffset src, bool could_be_null) OVERRIDE; // Call to address held at [base+offset] void Call(ManagedRegister base, Offset offset, ManagedRegister mscratch) OVERRIDE; void Call(FrameOffset base, Offset offset, ManagedRegister mscratch) OVERRIDE; void CallFromThread32(ThreadOffset<4> offset, ManagedRegister mscratch) OVERRIDE; // Generate code to check if Thread::Current()->exception_ is non-null // and branch to a ExceptionSlowPath if it is. void ExceptionPoll(ManagedRegister mscratch, size_t stack_adjust) OVERRIDE; private: void EmitR(int opcode, Register rs, Register rt, Register rd, int shamt, int funct); void EmitI(int opcode, Register rs, Register rt, uint16_t imm); void EmitJ(int opcode, int address); void EmitFR(int opcode, int fmt, FRegister ft, FRegister fs, FRegister fd, int funct); void EmitFI(int opcode, int fmt, FRegister rt, uint16_t imm); int32_t EncodeBranchOffset(int offset, int32_t inst, bool is_jump); int DecodeBranchOffset(int32_t inst, bool is_jump); DISALLOW_COPY_AND_ASSIGN(MipsAssembler); }; // Slowpath entered when Thread::Current()->_exception is non-null class MipsExceptionSlowPath FINAL : public SlowPath { public: explicit MipsExceptionSlowPath(MipsManagedRegister scratch, size_t stack_adjust) : scratch_(scratch), stack_adjust_(stack_adjust) {} virtual void Emit(Assembler *sp_asm) OVERRIDE; private: const MipsManagedRegister scratch_; const size_t stack_adjust_; }; } // namespace mips } // namespace art #endif // ART_COMPILER_UTILS_MIPS_ASSEMBLER_MIPS_H_