| // Copyright 2011 Google Inc. All Rights Reserved. |
| |
| #ifndef ART_SRC_ASSEMBLER_ARM_H_ |
| #define ART_SRC_ASSEMBLER_ARM_H_ |
| |
| #include "assembler.h" |
| #include "constants.h" |
| #include "managed_register_arm.h" |
| #include "logging.h" |
| #include "offsets.h" |
| #include "utils.h" |
| #include <vector> |
| |
| namespace art { |
| namespace arm { |
| |
| // Encodes Addressing Mode 1 - Data-processing operands defined in Section 5.1. |
| class ShifterOperand { |
| public: |
| // Data-processing operands - Uninitialized |
| ShifterOperand() { |
| type_ = -1; |
| } |
| |
| // Data-processing operands - Immediate |
| explicit ShifterOperand(uint32_t immediate) { |
| CHECK(immediate < (1 << kImmed8Bits)); |
| type_ = 1; |
| encoding_ = immediate; |
| } |
| |
| // Data-processing operands - Rotated immediate |
| ShifterOperand(uint32_t rotate, uint32_t immed8) { |
| CHECK((rotate < (1 << kRotateBits)) && (immed8 < (1 << kImmed8Bits))); |
| type_ = 1; |
| encoding_ = (rotate << kRotateShift) | (immed8 << kImmed8Shift); |
| } |
| |
| // Data-processing operands - Register |
| explicit ShifterOperand(Register rm) { |
| type_ = 0; |
| encoding_ = static_cast<uint32_t>(rm); |
| } |
| |
| // Data-processing operands - Logical shift/rotate by immediate |
| ShifterOperand(Register rm, Shift shift, uint32_t shift_imm) { |
| CHECK(shift_imm < (1 << kShiftImmBits)); |
| type_ = 0; |
| encoding_ = shift_imm << kShiftImmShift | |
| static_cast<uint32_t>(shift) << kShiftShift | |
| static_cast<uint32_t>(rm); |
| } |
| |
| // Data-processing operands - Logical shift/rotate by register |
| ShifterOperand(Register rm, Shift shift, Register rs) { |
| type_ = 0; |
| encoding_ = static_cast<uint32_t>(rs) << kShiftRegisterShift | |
| static_cast<uint32_t>(shift) << kShiftShift | (1 << 4) | |
| static_cast<uint32_t>(rm); |
| } |
| |
| static bool CanHold(uint32_t immediate, ShifterOperand* shifter_op) { |
| // Avoid the more expensive test for frequent small immediate values. |
| if (immediate < (1 << kImmed8Bits)) { |
| shifter_op->type_ = 1; |
| shifter_op->encoding_ = (0 << kRotateShift) | (immediate << kImmed8Shift); |
| return true; |
| } |
| // Note that immediate must be unsigned for the test to work correctly. |
| for (int rot = 0; rot < 16; rot++) { |
| uint32_t imm8 = (immediate << 2*rot) | (immediate >> (32 - 2*rot)); |
| if (imm8 < (1 << kImmed8Bits)) { |
| shifter_op->type_ = 1; |
| shifter_op->encoding_ = (rot << kRotateShift) | (imm8 << kImmed8Shift); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private: |
| bool is_valid() const { return (type_ == 0) || (type_ == 1); } |
| |
| uint32_t type() const { |
| CHECK(is_valid()); |
| return type_; |
| } |
| |
| uint32_t encoding() const { |
| CHECK(is_valid()); |
| return encoding_; |
| } |
| |
| uint32_t type_; // Encodes the type field (bits 27-25) in the instruction. |
| uint32_t encoding_; |
| |
| friend class ArmAssembler; |
| #ifdef SOURCE_ASSEMBLER_SUPPORT |
| friend class BinaryAssembler; |
| #endif |
| }; |
| |
| |
| enum LoadOperandType { |
| kLoadSignedByte, |
| kLoadUnsignedByte, |
| kLoadSignedHalfword, |
| kLoadUnsignedHalfword, |
| kLoadWord, |
| kLoadWordPair, |
| kLoadSWord, |
| kLoadDWord |
| }; |
| |
| |
| enum StoreOperandType { |
| kStoreByte, |
| kStoreHalfword, |
| kStoreWord, |
| kStoreWordPair, |
| kStoreSWord, |
| kStoreDWord |
| }; |
| |
| |
| // Load/store multiple addressing mode. |
| enum BlockAddressMode { |
| // bit encoding P U W |
| DA = (0|0|0) << 21, // decrement after |
| IA = (0|4|0) << 21, // increment after |
| DB = (8|0|0) << 21, // decrement before |
| IB = (8|4|0) << 21, // increment before |
| DA_W = (0|0|1) << 21, // decrement after with writeback to base |
| IA_W = (0|4|1) << 21, // increment after with writeback to base |
| DB_W = (8|0|1) << 21, // decrement before with writeback to base |
| IB_W = (8|4|1) << 21 // increment before with writeback to base |
| }; |
| |
| |
| class Address { |
| public: |
| // Memory operand addressing mode |
| enum Mode { |
| // bit encoding P U W |
| Offset = (8|4|0) << 21, // offset (w/o writeback to base) |
| PreIndex = (8|4|1) << 21, // pre-indexed addressing with writeback |
| PostIndex = (0|4|0) << 21, // post-indexed addressing with writeback |
| NegOffset = (8|0|0) << 21, // negative offset (w/o writeback to base) |
| NegPreIndex = (8|0|1) << 21, // negative pre-indexed with writeback |
| NegPostIndex = (0|0|0) << 21 // negative post-indexed with writeback |
| }; |
| |
| explicit Address(Register rn, int32_t offset = 0, Mode am = Offset) { |
| CHECK(IsAbsoluteUint(12, offset)); |
| if (offset < 0) { |
| encoding_ = (am ^ (1 << kUShift)) | -offset; // Flip U to adjust sign. |
| } else { |
| encoding_ = am | offset; |
| } |
| encoding_ |= static_cast<uint32_t>(rn) << kRnShift; |
| } |
| |
| static bool CanHoldLoadOffset(LoadOperandType type, int offset); |
| static bool CanHoldStoreOffset(StoreOperandType type, int offset); |
| |
| private: |
| uint32_t encoding() const { return encoding_; } |
| |
| // Encoding for addressing mode 3. |
| uint32_t encoding3() const { |
| const uint32_t offset_mask = (1 << 12) - 1; |
| uint32_t offset = encoding_ & offset_mask; |
| CHECK_LT(offset, 256u); |
| return (encoding_ & ~offset_mask) | ((offset & 0xf0) << 4) | (offset & 0xf); |
| } |
| |
| // Encoding for vfp load/store addressing. |
| uint32_t vencoding() const { |
| const uint32_t offset_mask = (1 << 12) - 1; |
| uint32_t offset = encoding_ & offset_mask; |
| CHECK(IsAbsoluteUint(10, offset)); // In the range -1020 to +1020. |
| CHECK(IsAligned(offset, 2)); // Multiple of 4. |
| int mode = encoding_ & ((8|4|1) << 21); |
| CHECK((mode == Offset) || (mode == NegOffset)); |
| uint32_t vencoding = (encoding_ & (0xf << kRnShift)) | (offset >> 2); |
| if (mode == Offset) { |
| vencoding |= 1 << 23; |
| } |
| return vencoding; |
| } |
| |
| uint32_t encoding_; |
| |
| friend class ArmAssembler; |
| }; |
| |
| |
| class ArmAssembler : public Assembler { |
| public: |
| ArmAssembler() {} |
| virtual ~ArmAssembler() {} |
| |
| // Data-processing instructions. |
| void and_(Register rd, Register rn, ShifterOperand so, Condition cond = AL); |
| |
| void eor(Register rd, Register rn, ShifterOperand so, Condition cond = AL); |
| |
| void sub(Register rd, Register rn, ShifterOperand so, Condition cond = AL); |
| void subs(Register rd, Register rn, ShifterOperand so, Condition cond = AL); |
| |
| void rsb(Register rd, Register rn, ShifterOperand so, Condition cond = AL); |
| void rsbs(Register rd, Register rn, ShifterOperand so, Condition cond = AL); |
| |
| void add(Register rd, Register rn, ShifterOperand so, Condition cond = AL); |
| |
| void adds(Register rd, Register rn, ShifterOperand so, Condition cond = AL); |
| |
| void adc(Register rd, Register rn, ShifterOperand so, Condition cond = AL); |
| |
| void sbc(Register rd, Register rn, ShifterOperand so, Condition cond = AL); |
| |
| void rsc(Register rd, Register rn, ShifterOperand so, Condition cond = AL); |
| |
| void tst(Register rn, ShifterOperand so, Condition cond = AL); |
| |
| void teq(Register rn, ShifterOperand so, Condition cond = AL); |
| |
| void cmp(Register rn, ShifterOperand so, Condition cond = AL); |
| |
| void cmn(Register rn, ShifterOperand so, Condition cond = AL); |
| |
| void orr(Register rd, Register rn, ShifterOperand so, Condition cond = AL); |
| void orrs(Register rd, Register rn, ShifterOperand so, Condition cond = AL); |
| |
| void mov(Register rd, ShifterOperand so, Condition cond = AL); |
| void movs(Register rd, ShifterOperand so, Condition cond = AL); |
| |
| void bic(Register rd, Register rn, ShifterOperand so, Condition cond = AL); |
| |
| void mvn(Register rd, ShifterOperand so, Condition cond = AL); |
| void mvns(Register rd, ShifterOperand so, Condition cond = AL); |
| |
| // Miscellaneous data-processing instructions. |
| void clz(Register rd, Register rm, Condition cond = AL); |
| void movw(Register rd, uint16_t imm16, Condition cond = AL); |
| void movt(Register rd, uint16_t imm16, Condition cond = AL); |
| |
| // Multiply instructions. |
| void mul(Register rd, Register rn, Register rm, Condition cond = AL); |
| void mla(Register rd, Register rn, Register rm, Register ra, |
| Condition cond = AL); |
| void mls(Register rd, Register rn, Register rm, Register ra, |
| Condition cond = AL); |
| void umull(Register rd_lo, Register rd_hi, Register rn, Register rm, |
| Condition cond = AL); |
| |
| // Load/store instructions. |
| void ldr(Register rd, Address ad, Condition cond = AL); |
| void str(Register rd, Address ad, Condition cond = AL); |
| |
| void ldrb(Register rd, Address ad, Condition cond = AL); |
| void strb(Register rd, Address ad, Condition cond = AL); |
| |
| void ldrh(Register rd, Address ad, Condition cond = AL); |
| void strh(Register rd, Address ad, Condition cond = AL); |
| |
| void ldrsb(Register rd, Address ad, Condition cond = AL); |
| void ldrsh(Register rd, Address ad, Condition cond = AL); |
| |
| void ldrd(Register rd, Address ad, Condition cond = AL); |
| void strd(Register rd, Address ad, Condition cond = AL); |
| |
| void ldm(BlockAddressMode am, Register base, |
| RegList regs, Condition cond = AL); |
| void stm(BlockAddressMode am, Register base, |
| RegList regs, Condition cond = AL); |
| |
| void ldrex(Register rd, Register rn, Condition cond = AL); |
| void strex(Register rd, Register rt, Register rn, Condition cond = AL); |
| |
| // Miscellaneous instructions. |
| void clrex(); |
| void nop(Condition cond = AL); |
| |
| // Note that gdb sets breakpoints using the undefined instruction 0xe7f001f0. |
| void bkpt(uint16_t imm16); |
| void svc(uint32_t imm24); |
| |
| // Floating point instructions (VFPv3-D16 and VFPv3-D32 profiles). |
| void vmovsr(SRegister sn, Register rt, Condition cond = AL); |
| void vmovrs(Register rt, SRegister sn, Condition cond = AL); |
| void vmovsrr(SRegister sm, Register rt, Register rt2, Condition cond = AL); |
| void vmovrrs(Register rt, Register rt2, SRegister sm, Condition cond = AL); |
| void vmovdrr(DRegister dm, Register rt, Register rt2, Condition cond = AL); |
| void vmovrrd(Register rt, Register rt2, DRegister dm, Condition cond = AL); |
| void vmovs(SRegister sd, SRegister sm, Condition cond = AL); |
| void vmovd(DRegister dd, DRegister dm, Condition cond = AL); |
| |
| // Returns false if the immediate cannot be encoded. |
| bool vmovs(SRegister sd, float s_imm, Condition cond = AL); |
| bool vmovd(DRegister dd, double d_imm, Condition cond = AL); |
| |
| void vldrs(SRegister sd, Address ad, Condition cond = AL); |
| void vstrs(SRegister sd, Address ad, Condition cond = AL); |
| void vldrd(DRegister dd, Address ad, Condition cond = AL); |
| void vstrd(DRegister dd, Address ad, Condition cond = AL); |
| |
| void vadds(SRegister sd, SRegister sn, SRegister sm, Condition cond = AL); |
| void vaddd(DRegister dd, DRegister dn, DRegister dm, Condition cond = AL); |
| void vsubs(SRegister sd, SRegister sn, SRegister sm, Condition cond = AL); |
| void vsubd(DRegister dd, DRegister dn, DRegister dm, Condition cond = AL); |
| void vmuls(SRegister sd, SRegister sn, SRegister sm, Condition cond = AL); |
| void vmuld(DRegister dd, DRegister dn, DRegister dm, Condition cond = AL); |
| void vmlas(SRegister sd, SRegister sn, SRegister sm, Condition cond = AL); |
| void vmlad(DRegister dd, DRegister dn, DRegister dm, Condition cond = AL); |
| void vmlss(SRegister sd, SRegister sn, SRegister sm, Condition cond = AL); |
| void vmlsd(DRegister dd, DRegister dn, DRegister dm, Condition cond = AL); |
| void vdivs(SRegister sd, SRegister sn, SRegister sm, Condition cond = AL); |
| void vdivd(DRegister dd, DRegister dn, DRegister dm, Condition cond = AL); |
| |
| void vabss(SRegister sd, SRegister sm, Condition cond = AL); |
| void vabsd(DRegister dd, DRegister dm, Condition cond = AL); |
| void vnegs(SRegister sd, SRegister sm, Condition cond = AL); |
| void vnegd(DRegister dd, DRegister dm, Condition cond = AL); |
| void vsqrts(SRegister sd, SRegister sm, Condition cond = AL); |
| void vsqrtd(DRegister dd, DRegister dm, Condition cond = AL); |
| |
| void vcvtsd(SRegister sd, DRegister dm, Condition cond = AL); |
| void vcvtds(DRegister dd, SRegister sm, Condition cond = AL); |
| void vcvtis(SRegister sd, SRegister sm, Condition cond = AL); |
| void vcvtid(SRegister sd, DRegister dm, Condition cond = AL); |
| void vcvtsi(SRegister sd, SRegister sm, Condition cond = AL); |
| void vcvtdi(DRegister dd, SRegister sm, Condition cond = AL); |
| void vcvtus(SRegister sd, SRegister sm, Condition cond = AL); |
| void vcvtud(SRegister sd, DRegister dm, Condition cond = AL); |
| void vcvtsu(SRegister sd, SRegister sm, Condition cond = AL); |
| void vcvtdu(DRegister dd, SRegister sm, Condition cond = AL); |
| |
| void vcmps(SRegister sd, SRegister sm, Condition cond = AL); |
| void vcmpd(DRegister dd, DRegister dm, Condition cond = AL); |
| void vcmpsz(SRegister sd, Condition cond = AL); |
| void vcmpdz(DRegister dd, Condition cond = AL); |
| void vmstat(Condition cond = AL); // VMRS APSR_nzcv, FPSCR |
| |
| // Branch instructions. |
| void b(Label* label, Condition cond = AL); |
| void bl(Label* label, Condition cond = AL); |
| void blx(Register rm, Condition cond = AL); |
| |
| // Macros. |
| // Add signed constant value to rd. May clobber IP. |
| void AddConstant(Register rd, int32_t value, Condition cond = AL); |
| void AddConstant(Register rd, Register rn, int32_t value, |
| Condition cond = AL); |
| void AddConstantSetFlags(Register rd, Register rn, int32_t value, |
| Condition cond = AL); |
| void AddConstantWithCarry(Register rd, Register rn, int32_t value, |
| Condition cond = AL); |
| |
| // Load and Store. May clobber IP. |
| void LoadImmediate(Register rd, int32_t value, Condition cond = AL); |
| void LoadSImmediate(SRegister sd, float value, Condition cond = AL); |
| void LoadDImmediate(DRegister dd, double value, |
| Register scratch, Condition cond = AL); |
| void MarkExceptionHandler(Label* label); |
| void LoadFromOffset(LoadOperandType type, |
| Register reg, |
| Register base, |
| int32_t offset, |
| Condition cond = AL); |
| void StoreToOffset(StoreOperandType type, |
| Register reg, |
| Register base, |
| int32_t offset, |
| Condition cond = AL); |
| void LoadSFromOffset(SRegister reg, |
| Register base, |
| int32_t offset, |
| Condition cond = AL); |
| void StoreSToOffset(SRegister reg, |
| Register base, |
| int32_t offset, |
| Condition cond = AL); |
| void LoadDFromOffset(DRegister reg, |
| Register base, |
| int32_t offset, |
| Condition cond = AL); |
| void StoreDToOffset(DRegister reg, |
| Register base, |
| int32_t offset, |
| Condition cond = AL); |
| |
| void Push(Register rd, Condition cond = AL); |
| void Pop(Register rd, Condition cond = AL); |
| |
| void PushList(RegList regs, Condition cond = AL); |
| void PopList(RegList regs, Condition cond = AL); |
| |
| void Mov(Register rd, Register rm, Condition cond = AL); |
| |
| // Convenience shift instructions. Use mov instruction with shifter operand |
| // for variants setting the status flags or using a register shift count. |
| void Lsl(Register rd, Register rm, uint32_t shift_imm, Condition cond = AL); |
| void Lsr(Register rd, Register rm, uint32_t shift_imm, Condition cond = AL); |
| void Asr(Register rd, Register rm, uint32_t shift_imm, Condition cond = AL); |
| void Ror(Register rd, Register rm, uint32_t shift_imm, Condition cond = AL); |
| void Rrx(Register rd, Register rm, Condition cond = AL); |
| |
| // Encode a signed constant in tst instructions, only affecting the flags. |
| void EncodeUint32InTstInstructions(uint32_t data); |
| // ... and decode from a pc pointing to the start of encoding instructions. |
| static uint32_t DecodeUint32FromTstInstructions(uword pc); |
| static bool IsInstructionForExceptionHandling(uword pc); |
| |
| // Emit data (e.g. encoded instruction or immediate) to the |
| // instruction stream. |
| void Emit(int32_t value); |
| void Bind(Label* label); |
| |
| // |
| // Overridden common assembler high-level functionality |
| // |
| |
| // Emit code that will create an activation on the stack |
| virtual void BuildFrame(size_t frame_size, ManagedRegister method_reg, |
| const std::vector<ManagedRegister>& callee_save_regs); |
| |
| // Emit code that will remove an activation from the stack |
| virtual void RemoveFrame(size_t frame_size, |
| const std::vector<ManagedRegister>& callee_save_regs); |
| |
| virtual void IncreaseFrameSize(size_t adjust); |
| virtual void DecreaseFrameSize(size_t adjust); |
| |
| // Store routines |
| virtual void Store(FrameOffset offs, ManagedRegister src, size_t size); |
| virtual void StoreRef(FrameOffset dest, ManagedRegister src); |
| virtual void StoreRawPtr(FrameOffset dest, ManagedRegister src); |
| |
| virtual void StoreImmediateToFrame(FrameOffset dest, uint32_t imm, |
| ManagedRegister scratch); |
| |
| virtual void StoreImmediateToThread(ThreadOffset dest, uint32_t imm, |
| ManagedRegister scratch); |
| |
| virtual void StoreStackOffsetToThread(ThreadOffset thr_offs, |
| FrameOffset fr_offs, |
| ManagedRegister scratch); |
| |
| virtual void StoreStackPointerToThread(ThreadOffset thr_offs); |
| |
| virtual void StoreSpanning(FrameOffset dest, ManagedRegister src, |
| FrameOffset in_off, ManagedRegister scratch); |
| |
| // Load routines |
| virtual void Load(ManagedRegister dest, FrameOffset src, size_t size); |
| |
| virtual void LoadRef(ManagedRegister dest, FrameOffset src); |
| |
| virtual void LoadRef(ManagedRegister dest, ManagedRegister base, |
| MemberOffset offs); |
| |
| virtual void LoadRawPtr(ManagedRegister dest, ManagedRegister base, |
| Offset offs); |
| |
| virtual void LoadRawPtrFromThread(ManagedRegister dest, |
| ThreadOffset offs); |
| |
| // Copying routines |
| virtual void Move(ManagedRegister dest, ManagedRegister src); |
| |
| virtual void CopyRawPtrFromThread(FrameOffset fr_offs, ThreadOffset thr_offs, |
| ManagedRegister scratch); |
| |
| virtual void CopyRawPtrToThread(ThreadOffset thr_offs, FrameOffset fr_offs, |
| ManagedRegister scratch); |
| |
| virtual void CopyRef(FrameOffset dest, FrameOffset src, |
| ManagedRegister scratch); |
| |
| virtual void Copy(FrameOffset dest, FrameOffset src, ManagedRegister scratch, |
| unsigned int size); |
| |
| virtual void Copy(FrameOffset dest, ManagedRegister src_base, Offset src_offset, |
| ManagedRegister scratch, size_t size); |
| |
| virtual void Copy(FrameOffset dest, FrameOffset src_base, Offset src_offset, |
| ManagedRegister scratch, size_t size); |
| |
| virtual void Copy(ThreadOffset dest_base, Offset dest_offset, FrameOffset src, |
| ManagedRegister scratch, ManagedRegister scratch2, size_t size); |
| |
| virtual void MemoryBarrier(ManagedRegister scratch); |
| |
| // Exploit fast access in managed code to Thread::Current() |
| virtual void GetCurrentThread(ManagedRegister tr); |
| virtual void GetCurrentThread(FrameOffset dest_offset, |
| ManagedRegister scratch); |
| |
| // Set up out_reg to hold a Object** into the SIRT, 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 SIRT entry to see if the value is |
| // NULL. |
| virtual void CreateSirtEntry(ManagedRegister out_reg, FrameOffset sirt_offset, |
| ManagedRegister in_reg, bool null_allowed); |
| |
| // Set up out_off to hold a Object** into the SIRT, or to be NULL if the |
| // value is null and null_allowed. |
| virtual void CreateSirtEntry(FrameOffset out_off, FrameOffset sirt_offset, |
| ManagedRegister scratch, bool null_allowed); |
| |
| // src holds a SIRT entry (Object**) load this into dst |
| virtual void LoadReferenceFromSirt(ManagedRegister dst, |
| ManagedRegister src); |
| |
| // Heap::VerifyObject on src. In some cases (such as a reference to this) we |
| // know that src may not be null. |
| virtual void VerifyObject(ManagedRegister src, bool could_be_null); |
| virtual void VerifyObject(FrameOffset src, bool could_be_null); |
| |
| // Call to address held at [base+offset] |
| virtual void Call(ManagedRegister base, Offset offset, |
| ManagedRegister scratch); |
| virtual void Call(FrameOffset base, Offset offset, |
| ManagedRegister scratch); |
| virtual void Call(ThreadOffset offset, ManagedRegister scratch); |
| |
| // Generate code to check if Thread::Current()->suspend_count_ is non-zero |
| // and branch to a SuspendSlowPath if it is. The SuspendSlowPath will continue |
| // at the next instruction. |
| virtual void SuspendPoll(ManagedRegister scratch, ManagedRegister return_reg, |
| FrameOffset return_save_location, |
| size_t return_size); |
| |
| // Generate code to check if Thread::Current()->exception_ is non-null |
| // and branch to a ExceptionSlowPath if it is. |
| virtual void ExceptionPoll(ManagedRegister scratch); |
| |
| private: |
| void EmitType01(Condition cond, |
| int type, |
| Opcode opcode, |
| int set_cc, |
| Register rn, |
| Register rd, |
| ShifterOperand so); |
| |
| void EmitType5(Condition cond, int offset, bool link); |
| |
| void EmitMemOp(Condition cond, |
| bool load, |
| bool byte, |
| Register rd, |
| Address ad); |
| |
| void EmitMemOpAddressMode3(Condition cond, |
| int32_t mode, |
| Register rd, |
| Address ad); |
| |
| void EmitMultiMemOp(Condition cond, |
| BlockAddressMode am, |
| bool load, |
| Register base, |
| RegList regs); |
| |
| void EmitShiftImmediate(Condition cond, |
| Shift opcode, |
| Register rd, |
| Register rm, |
| ShifterOperand so); |
| |
| void EmitShiftRegister(Condition cond, |
| Shift opcode, |
| Register rd, |
| Register rm, |
| ShifterOperand so); |
| |
| void EmitMulOp(Condition cond, |
| int32_t opcode, |
| Register rd, |
| Register rn, |
| Register rm, |
| Register rs); |
| |
| void EmitVFPsss(Condition cond, |
| int32_t opcode, |
| SRegister sd, |
| SRegister sn, |
| SRegister sm); |
| |
| void EmitVFPddd(Condition cond, |
| int32_t opcode, |
| DRegister dd, |
| DRegister dn, |
| DRegister dm); |
| |
| void EmitVFPsd(Condition cond, |
| int32_t opcode, |
| SRegister sd, |
| DRegister dm); |
| |
| void EmitVFPds(Condition cond, |
| int32_t opcode, |
| DRegister dd, |
| SRegister sm); |
| |
| void EmitBranch(Condition cond, Label* label, bool link); |
| static int32_t EncodeBranchOffset(int offset, int32_t inst); |
| static int DecodeBranchOffset(int32_t inst); |
| int32_t EncodeTstOffset(int offset, int32_t inst); |
| int DecodeTstOffset(int32_t inst); |
| |
| // Returns whether or not the given register is used for passing parameters. |
| static int RegisterCompare(const Register* reg1, const Register* reg2) { |
| return *reg1 - *reg2; |
| } |
| }; |
| |
| // Slowpath entered when Thread::Current()->_exception is non-null |
| class ArmExceptionSlowPath : public SlowPath { |
| public: |
| ArmExceptionSlowPath(ArmManagedRegister scratch) : scratch_(scratch) {} |
| virtual void Emit(Assembler *sp_asm); |
| private: |
| const ArmManagedRegister scratch_; |
| }; |
| |
| // Slowpath entered when Thread::Current()->_suspend_count is non-zero |
| class ArmSuspendCountSlowPath : public SlowPath { |
| public: |
| ArmSuspendCountSlowPath(ArmManagedRegister return_reg, |
| FrameOffset return_save_location, |
| size_t return_size) : |
| return_register_(return_reg), return_save_location_(return_save_location), |
| return_size_(return_size) {} |
| virtual void Emit(Assembler *sp_asm); |
| |
| private: |
| // Remember how to save the return value |
| const ArmManagedRegister return_register_; |
| const FrameOffset return_save_location_; |
| const size_t return_size_; |
| }; |
| |
| } // namespace arm |
| } // namespace art |
| |
| #endif // ART_SRC_ASSEMBLER_ARM_H_ |
