| // Copyright 2012 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef INCLUDED_FROM_MACRO_ASSEMBLER_H |
| #error This header must be included via macro-assembler.h |
| #endif |
| |
| #ifndef V8_CODEGEN_X64_MACRO_ASSEMBLER_X64_H_ |
| #define V8_CODEGEN_X64_MACRO_ASSEMBLER_X64_H_ |
| |
| #include "src/base/flags.h" |
| #include "src/codegen/bailout-reason.h" |
| #include "src/codegen/x64/assembler-x64.h" |
| #include "src/common/globals.h" |
| #include "src/objects/contexts.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| // Convenience for platform-independent signatures. |
| using MemOperand = Operand; |
| |
| class StringConstantBase; |
| |
| enum RememberedSetAction { EMIT_REMEMBERED_SET, OMIT_REMEMBERED_SET }; |
| enum SmiCheck { INLINE_SMI_CHECK, OMIT_SMI_CHECK }; |
| |
| struct SmiIndex { |
| SmiIndex(Register index_register, ScaleFactor scale) |
| : reg(index_register), scale(scale) {} |
| Register reg; |
| ScaleFactor scale; |
| }; |
| |
| // TODO(victorgomes): Move definition to macro-assembler.h, once all other |
| // platforms are updated. |
| enum class StackLimitKind { kInterruptStackLimit, kRealStackLimit }; |
| |
| // Convenient class to access arguments below the stack pointer. |
| class StackArgumentsAccessor { |
| public: |
| // argc = the number of arguments not including the receiver. |
| explicit StackArgumentsAccessor(Register argc) : argc_(argc) { |
| DCHECK_NE(argc_, no_reg); |
| } |
| |
| // Argument 0 is the receiver (despite argc not including the receiver). |
| Operand operator[](int index) const { return GetArgumentOperand(index); } |
| |
| Operand GetArgumentOperand(int index) const; |
| Operand GetReceiverOperand() const { return GetArgumentOperand(0); } |
| |
| private: |
| const Register argc_; |
| |
| DISALLOW_IMPLICIT_CONSTRUCTORS(StackArgumentsAccessor); |
| }; |
| |
| class V8_EXPORT_PRIVATE TurboAssembler : public TurboAssemblerBase { |
| public: |
| using TurboAssemblerBase::TurboAssemblerBase; |
| |
| template <typename Dst, typename... Args> |
| struct AvxHelper { |
| Assembler* assm; |
| base::Optional<CpuFeature> feature = base::nullopt; |
| // Call a method where the AVX version expects the dst argument to be |
| // duplicated. |
| template <void (Assembler::*avx)(Dst, Dst, Args...), |
| void (Assembler::*no_avx)(Dst, Args...)> |
| void emit(Dst dst, Args... args) { |
| if (CpuFeatures::IsSupported(AVX)) { |
| CpuFeatureScope scope(assm, AVX); |
| (assm->*avx)(dst, dst, args...); |
| } else if (feature.has_value()) { |
| DCHECK(CpuFeatures::IsSupported(*feature)); |
| CpuFeatureScope scope(assm, *feature); |
| (assm->*no_avx)(dst, args...); |
| } else { |
| (assm->*no_avx)(dst, args...); |
| } |
| } |
| |
| // Call a method where the AVX version expects no duplicated dst argument. |
| template <void (Assembler::*avx)(Dst, Args...), |
| void (Assembler::*no_avx)(Dst, Args...)> |
| void emit(Dst dst, Args... args) { |
| if (CpuFeatures::IsSupported(AVX)) { |
| CpuFeatureScope scope(assm, AVX); |
| (assm->*avx)(dst, args...); |
| } else if (feature.has_value()) { |
| DCHECK(CpuFeatures::IsSupported(*feature)); |
| CpuFeatureScope scope(assm, *feature); |
| (assm->*no_avx)(dst, args...); |
| } else { |
| (assm->*no_avx)(dst, args...); |
| } |
| } |
| }; |
| |
| #define AVX_OP(macro_name, name) \ |
| template <typename Dst, typename... Args> \ |
| void macro_name(Dst dst, Args... args) { \ |
| AvxHelper<Dst, Args...>{this} \ |
| .template emit<&Assembler::v##name, &Assembler::name>(dst, args...); \ |
| } |
| |
| #define AVX_OP_SSE3(macro_name, name) \ |
| template <typename Dst, typename... Args> \ |
| void macro_name(Dst dst, Args... args) { \ |
| AvxHelper<Dst, Args...>{this, base::Optional<CpuFeature>(SSE3)} \ |
| .template emit<&Assembler::v##name, &Assembler::name>(dst, args...); \ |
| } |
| |
| #define AVX_OP_SSSE3(macro_name, name) \ |
| template <typename Dst, typename... Args> \ |
| void macro_name(Dst dst, Args... args) { \ |
| AvxHelper<Dst, Args...>{this, base::Optional<CpuFeature>(SSSE3)} \ |
| .template emit<&Assembler::v##name, &Assembler::name>(dst, args...); \ |
| } |
| |
| #define AVX_OP_SSE4_1(macro_name, name) \ |
| template <typename Dst, typename... Args> \ |
| void macro_name(Dst dst, Args... args) { \ |
| AvxHelper<Dst, Args...>{this, base::Optional<CpuFeature>(SSE4_1)} \ |
| .template emit<&Assembler::v##name, &Assembler::name>(dst, args...); \ |
| } |
| #define AVX_OP_SSE4_2(macro_name, name) \ |
| template <typename Dst, typename... Args> \ |
| void macro_name(Dst dst, Args... args) { \ |
| AvxHelper<Dst, Args...>{this, base::Optional<CpuFeature>(SSE4_2)} \ |
| .template emit<&Assembler::v##name, &Assembler::name>(dst, args...); \ |
| } |
| AVX_OP(Subsd, subsd) |
| AVX_OP(Divss, divss) |
| AVX_OP(Divsd, divsd) |
| AVX_OP(Orps, orps) |
| AVX_OP(Xorps, xorps) |
| AVX_OP(Xorpd, xorpd) |
| AVX_OP(Movd, movd) |
| AVX_OP(Movq, movq) |
| AVX_OP(Movaps, movaps) |
| AVX_OP(Movapd, movapd) |
| AVX_OP(Movups, movups) |
| AVX_OP(Movmskps, movmskps) |
| AVX_OP(Movmskpd, movmskpd) |
| AVX_OP(Pmovmskb, pmovmskb) |
| AVX_OP(Movss, movss) |
| AVX_OP(Movsd, movsd) |
| AVX_OP(Movdqu, movdqu) |
| AVX_OP(Movlps, movlps) |
| AVX_OP(Movhps, movhps) |
| AVX_OP(Pcmpeqb, pcmpeqb) |
| AVX_OP(Pcmpeqw, pcmpeqw) |
| AVX_OP(Pcmpeqd, pcmpeqd) |
| AVX_OP(Pcmpgtb, pcmpgtb) |
| AVX_OP(Pcmpgtw, pcmpgtw) |
| AVX_OP(Pmaxsw, pmaxsw) |
| AVX_OP(Pmaxub, pmaxub) |
| AVX_OP(Pminsw, pminsw) |
| AVX_OP(Pminub, pminub) |
| AVX_OP(Addss, addss) |
| AVX_OP(Addsd, addsd) |
| AVX_OP(Mulsd, mulsd) |
| AVX_OP(Andps, andps) |
| AVX_OP(Andnps, andnps) |
| AVX_OP(Andpd, andpd) |
| AVX_OP(Andnpd, andnpd) |
| AVX_OP(Orpd, orpd) |
| AVX_OP(Cmpeqps, cmpeqps) |
| AVX_OP(Cmpltps, cmpltps) |
| AVX_OP(Cmpleps, cmpleps) |
| AVX_OP(Cmpneqps, cmpneqps) |
| AVX_OP(Cmpnltps, cmpnltps) |
| AVX_OP(Cmpnleps, cmpnleps) |
| AVX_OP(Cmpeqpd, cmpeqpd) |
| AVX_OP(Cmpltpd, cmpltpd) |
| AVX_OP(Cmplepd, cmplepd) |
| AVX_OP(Cmpneqpd, cmpneqpd) |
| AVX_OP(Cmpnltpd, cmpnltpd) |
| AVX_OP(Cmpnlepd, cmpnlepd) |
| AVX_OP(Sqrtss, sqrtss) |
| AVX_OP(Sqrtsd, sqrtsd) |
| AVX_OP(Sqrtps, sqrtps) |
| AVX_OP(Sqrtpd, sqrtpd) |
| AVX_OP(Cvttps2dq, cvttps2dq) |
| AVX_OP(Ucomiss, ucomiss) |
| AVX_OP(Ucomisd, ucomisd) |
| AVX_OP(Pand, pand) |
| AVX_OP(Por, por) |
| AVX_OP(Pxor, pxor) |
| AVX_OP(Psubb, psubb) |
| AVX_OP(Psubw, psubw) |
| AVX_OP(Psubd, psubd) |
| AVX_OP(Psubq, psubq) |
| AVX_OP(Psubsb, psubsb) |
| AVX_OP(Psubsw, psubsw) |
| AVX_OP(Psubusb, psubusb) |
| AVX_OP(Psubusw, psubusw) |
| AVX_OP(Pslld, pslld) |
| AVX_OP(Pavgb, pavgb) |
| AVX_OP(Pavgw, pavgw) |
| AVX_OP(Psraw, psraw) |
| AVX_OP(Psrad, psrad) |
| AVX_OP(Psllw, psllw) |
| AVX_OP(Psllq, psllq) |
| AVX_OP(Psrlw, psrlw) |
| AVX_OP(Psrld, psrld) |
| AVX_OP(Psrlq, psrlq) |
| AVX_OP(Pmaddwd, pmaddwd) |
| AVX_OP(Paddb, paddb) |
| AVX_OP(Paddw, paddw) |
| AVX_OP(Paddd, paddd) |
| AVX_OP(Paddq, paddq) |
| AVX_OP(Paddsb, paddsb) |
| AVX_OP(Paddsw, paddsw) |
| AVX_OP(Paddusb, paddusb) |
| AVX_OP(Paddusw, paddusw) |
| AVX_OP(Pcmpgtd, pcmpgtd) |
| AVX_OP(Pmullw, pmullw) |
| AVX_OP(Pmuludq, pmuludq) |
| AVX_OP(Addpd, addpd) |
| AVX_OP(Subpd, subpd) |
| AVX_OP(Mulpd, mulpd) |
| AVX_OP(Minps, minps) |
| AVX_OP(Minpd, minpd) |
| AVX_OP(Divpd, divpd) |
| AVX_OP(Maxps, maxps) |
| AVX_OP(Maxpd, maxpd) |
| AVX_OP(Cvtdq2ps, cvtdq2ps) |
| AVX_OP(Rcpps, rcpps) |
| AVX_OP(Rsqrtps, rsqrtps) |
| AVX_OP(Addps, addps) |
| AVX_OP(Subps, subps) |
| AVX_OP(Mulps, mulps) |
| AVX_OP(Divps, divps) |
| AVX_OP(Pshuflw, pshuflw) |
| AVX_OP(Pshufhw, pshufhw) |
| AVX_OP(Packsswb, packsswb) |
| AVX_OP(Packuswb, packuswb) |
| AVX_OP(Packssdw, packssdw) |
| AVX_OP(Punpcklbw, punpcklbw) |
| AVX_OP(Punpcklwd, punpcklwd) |
| AVX_OP(Punpckldq, punpckldq) |
| AVX_OP(Punpckhbw, punpckhbw) |
| AVX_OP(Punpckhwd, punpckhwd) |
| AVX_OP(Punpckhdq, punpckhdq) |
| AVX_OP(Punpcklqdq, punpcklqdq) |
| AVX_OP(Punpckhqdq, punpckhqdq) |
| AVX_OP(Pshufd, pshufd) |
| AVX_OP(Cmpps, cmpps) |
| AVX_OP(Cmppd, cmppd) |
| AVX_OP(Movlhps, movlhps) |
| AVX_OP_SSE3(Haddps, haddps) |
| AVX_OP_SSE3(Movddup, movddup) |
| AVX_OP_SSSE3(Phaddd, phaddd) |
| AVX_OP_SSSE3(Phaddw, phaddw) |
| AVX_OP_SSSE3(Pshufb, pshufb) |
| AVX_OP_SSSE3(Psignb, psignb) |
| AVX_OP_SSSE3(Psignw, psignw) |
| AVX_OP_SSSE3(Psignd, psignd) |
| AVX_OP_SSSE3(Palignr, palignr) |
| AVX_OP_SSSE3(Pabsb, pabsb) |
| AVX_OP_SSSE3(Pabsw, pabsw) |
| AVX_OP_SSSE3(Pabsd, pabsd) |
| AVX_OP_SSE4_1(Pcmpeqq, pcmpeqq) |
| AVX_OP_SSE4_1(Packusdw, packusdw) |
| AVX_OP_SSE4_1(Pminsb, pminsb) |
| AVX_OP_SSE4_1(Pminsd, pminsd) |
| AVX_OP_SSE4_1(Pminuw, pminuw) |
| AVX_OP_SSE4_1(Pminud, pminud) |
| AVX_OP_SSE4_1(Pmaxsb, pmaxsb) |
| AVX_OP_SSE4_1(Pmaxsd, pmaxsd) |
| AVX_OP_SSE4_1(Pmaxuw, pmaxuw) |
| AVX_OP_SSE4_1(Pmaxud, pmaxud) |
| AVX_OP_SSE4_1(Pmulld, pmulld) |
| AVX_OP_SSE4_1(Extractps, extractps) |
| AVX_OP_SSE4_1(Insertps, insertps) |
| AVX_OP_SSE4_1(Pinsrq, pinsrq) |
| AVX_OP_SSE4_1(Pblendw, pblendw) |
| AVX_OP_SSE4_1(Ptest, ptest) |
| AVX_OP_SSE4_1(Pmovsxbw, pmovsxbw) |
| AVX_OP_SSE4_1(Pmovsxwd, pmovsxwd) |
| AVX_OP_SSE4_1(Pmovsxdq, pmovsxdq) |
| AVX_OP_SSE4_1(Pmovzxbw, pmovzxbw) |
| AVX_OP_SSE4_1(Pmovzxwd, pmovzxwd) |
| AVX_OP_SSE4_1(Pmovzxdq, pmovzxdq) |
| AVX_OP_SSE4_1(Pextrb, pextrb) |
| AVX_OP_SSE4_1(Pextrw, pextrw) |
| AVX_OP_SSE4_1(Pextrq, pextrq) |
| AVX_OP_SSE4_1(Roundps, roundps) |
| AVX_OP_SSE4_1(Roundpd, roundpd) |
| AVX_OP_SSE4_1(Roundss, roundss) |
| AVX_OP_SSE4_1(Roundsd, roundsd) |
| AVX_OP_SSE4_2(Pcmpgtq, pcmpgtq) |
| |
| #undef AVX_OP |
| |
| void PushReturnAddressFrom(Register src) { pushq(src); } |
| void PopReturnAddressTo(Register dst) { popq(dst); } |
| |
| void Ret(); |
| |
| // Return and drop arguments from stack, where the number of arguments |
| // may be bigger than 2^16 - 1. Requires a scratch register. |
| void Ret(int bytes_dropped, Register scratch); |
| |
| // Load a register with a long value as efficiently as possible. |
| void Set(Register dst, int64_t x); |
| void Set(Operand dst, intptr_t x); |
| |
| // Operations on roots in the root-array. |
| void LoadRoot(Register destination, RootIndex index) override; |
| void LoadRoot(Operand destination, RootIndex index) { |
| LoadRoot(kScratchRegister, index); |
| movq(destination, kScratchRegister); |
| } |
| |
| void Push(Register src); |
| void Push(Operand src); |
| void Push(Immediate value); |
| void Push(Smi smi); |
| void Push(Handle<HeapObject> source); |
| |
| enum class PushArrayOrder { kNormal, kReverse }; |
| // `array` points to the first element (the lowest address). |
| // `array` and `size` are not modified. |
| void PushArray(Register array, Register size, Register scratch, |
| PushArrayOrder order = PushArrayOrder::kNormal); |
| |
| // Before calling a C-function from generated code, align arguments on stack. |
| // After aligning the frame, arguments must be stored in rsp[0], rsp[8], |
| // etc., not pushed. The argument count assumes all arguments are word sized. |
| // The number of slots reserved for arguments depends on platform. On Windows |
| // stack slots are reserved for the arguments passed in registers. On other |
| // platforms stack slots are only reserved for the arguments actually passed |
| // on the stack. |
| void PrepareCallCFunction(int num_arguments); |
| |
| // Calls a C function and cleans up the space for arguments allocated |
| // by PrepareCallCFunction. The called function is not allowed to trigger a |
| // garbage collection, since that might move the code and invalidate the |
| // return address (unless this is somehow accounted for by the called |
| // function). |
| void CallCFunction(ExternalReference function, int num_arguments); |
| void CallCFunction(Register function, int num_arguments); |
| |
| // Calculate the number of stack slots to reserve for arguments when calling a |
| // C function. |
| int ArgumentStackSlotsForCFunctionCall(int num_arguments); |
| |
| void CheckPageFlag(Register object, Register scratch, int mask, Condition cc, |
| Label* condition_met, |
| Label::Distance condition_met_distance = Label::kFar); |
| |
| void Cvtss2sd(XMMRegister dst, XMMRegister src); |
| void Cvtss2sd(XMMRegister dst, Operand src); |
| void Cvtsd2ss(XMMRegister dst, XMMRegister src); |
| void Cvtsd2ss(XMMRegister dst, Operand src); |
| void Cvttsd2si(Register dst, XMMRegister src); |
| void Cvttsd2si(Register dst, Operand src); |
| void Cvttsd2siq(Register dst, XMMRegister src); |
| void Cvttsd2siq(Register dst, Operand src); |
| void Cvttss2si(Register dst, XMMRegister src); |
| void Cvttss2si(Register dst, Operand src); |
| void Cvttss2siq(Register dst, XMMRegister src); |
| void Cvttss2siq(Register dst, Operand src); |
| void Cvtlui2ss(XMMRegister dst, Register src); |
| void Cvtlui2ss(XMMRegister dst, Operand src); |
| void Cvtlui2sd(XMMRegister dst, Register src); |
| void Cvtlui2sd(XMMRegister dst, Operand src); |
| void Cvtqui2ss(XMMRegister dst, Register src); |
| void Cvtqui2ss(XMMRegister dst, Operand src); |
| void Cvtqui2sd(XMMRegister dst, Register src); |
| void Cvtqui2sd(XMMRegister dst, Operand src); |
| void Cvttsd2uiq(Register dst, Operand src, Label* fail = nullptr); |
| void Cvttsd2uiq(Register dst, XMMRegister src, Label* fail = nullptr); |
| void Cvttss2uiq(Register dst, Operand src, Label* fail = nullptr); |
| void Cvttss2uiq(Register dst, XMMRegister src, Label* fail = nullptr); |
| |
| // cvtsi2sd and cvtsi2ss instructions only write to the low 64/32-bit of dst |
| // register, which hinders register renaming and makes dependence chains |
| // longer. So we use xorpd to clear the dst register before cvtsi2sd for |
| // non-AVX and a scratch XMM register as first src for AVX to solve this |
| // issue. |
| void Cvtqsi2ss(XMMRegister dst, Register src); |
| void Cvtqsi2ss(XMMRegister dst, Operand src); |
| void Cvtqsi2sd(XMMRegister dst, Register src); |
| void Cvtqsi2sd(XMMRegister dst, Operand src); |
| void Cvtlsi2ss(XMMRegister dst, Register src); |
| void Cvtlsi2ss(XMMRegister dst, Operand src); |
| void Cvtlsi2sd(XMMRegister dst, Register src); |
| void Cvtlsi2sd(XMMRegister dst, Operand src); |
| |
| void Lzcntq(Register dst, Register src); |
| void Lzcntq(Register dst, Operand src); |
| void Lzcntl(Register dst, Register src); |
| void Lzcntl(Register dst, Operand src); |
| void Tzcntq(Register dst, Register src); |
| void Tzcntq(Register dst, Operand src); |
| void Tzcntl(Register dst, Register src); |
| void Tzcntl(Register dst, Operand src); |
| void Popcntl(Register dst, Register src); |
| void Popcntl(Register dst, Operand src); |
| void Popcntq(Register dst, Register src); |
| void Popcntq(Register dst, Operand src); |
| |
| // Is the value a tagged smi. |
| Condition CheckSmi(Register src); |
| Condition CheckSmi(Operand src); |
| |
| // Jump to label if the value is a tagged smi. |
| void JumpIfSmi(Register src, Label* on_smi, |
| Label::Distance near_jump = Label::kFar); |
| |
| void JumpIfEqual(Register a, int32_t b, Label* dest) { |
| cmpl(a, Immediate(b)); |
| j(equal, dest); |
| } |
| |
| void JumpIfLessThan(Register a, int32_t b, Label* dest) { |
| cmpl(a, Immediate(b)); |
| j(less, dest); |
| } |
| |
| void LoadMap(Register destination, Register object); |
| |
| void Move(Register dst, Smi source); |
| |
| void Move(Operand dst, Smi source) { |
| Register constant = GetSmiConstant(source); |
| movq(dst, constant); |
| } |
| |
| void Move(Register dst, ExternalReference ext); |
| |
| void Move(XMMRegister dst, uint32_t src); |
| void Move(XMMRegister dst, uint64_t src); |
| void Move(XMMRegister dst, float src) { Move(dst, bit_cast<uint32_t>(src)); } |
| void Move(XMMRegister dst, double src) { Move(dst, bit_cast<uint64_t>(src)); } |
| void Move(XMMRegister dst, uint64_t high, uint64_t low); |
| |
| // Move if the registers are not identical. |
| void Move(Register target, Register source); |
| |
| void Move(Register dst, Handle<HeapObject> source, |
| RelocInfo::Mode rmode = RelocInfo::FULL_EMBEDDED_OBJECT); |
| void Move(Operand dst, Handle<HeapObject> source, |
| RelocInfo::Mode rmode = RelocInfo::FULL_EMBEDDED_OBJECT); |
| |
| // Loads a pointer into a register with a relocation mode. |
| void Move(Register dst, Address ptr, RelocInfo::Mode rmode) { |
| // This method must not be used with heap object references. The stored |
| // address is not GC safe. Use the handle version instead. |
| DCHECK(rmode == RelocInfo::NONE || rmode > RelocInfo::LAST_GCED_ENUM); |
| movq(dst, Immediate64(ptr, rmode)); |
| } |
| |
| // Move src0 to dst0 and src1 to dst1, handling possible overlaps. |
| void MovePair(Register dst0, Register src0, Register dst1, Register src1); |
| |
| void MoveStringConstant( |
| Register result, const StringConstantBase* string, |
| RelocInfo::Mode rmode = RelocInfo::FULL_EMBEDDED_OBJECT); |
| |
| // Convert smi to word-size sign-extended value. |
| void SmiUntag(Register reg); |
| // Requires dst != src |
| void SmiUntag(Register dst, Register src); |
| void SmiUntag(Register dst, Operand src); |
| |
| // Loads the address of the external reference into the destination |
| // register. |
| void LoadAddress(Register destination, ExternalReference source); |
| |
| void LoadFromConstantsTable(Register destination, |
| int constant_index) override; |
| void LoadRootRegisterOffset(Register destination, intptr_t offset) override; |
| void LoadRootRelative(Register destination, int32_t offset) override; |
| |
| // Operand pointing to an external reference. |
| // May emit code to set up the scratch register. The operand is |
| // only guaranteed to be correct as long as the scratch register |
| // isn't changed. |
| // If the operand is used more than once, use a scratch register |
| // that is guaranteed not to be clobbered. |
| Operand ExternalReferenceAsOperand(ExternalReference reference, |
| Register scratch = kScratchRegister); |
| |
| void Call(Register reg) { call(reg); } |
| void Call(Operand op); |
| void Call(Handle<Code> code_object, RelocInfo::Mode rmode); |
| void Call(Address destination, RelocInfo::Mode rmode); |
| void Call(ExternalReference ext); |
| void Call(Label* target) { call(target); } |
| |
| Operand EntryFromBuiltinIndexAsOperand(Builtins::Name builtin_index); |
| Operand EntryFromBuiltinIndexAsOperand(Register builtin_index); |
| void CallBuiltinByIndex(Register builtin_index) override; |
| void CallBuiltin(int builtin_index); |
| |
| void LoadCodeObjectEntry(Register destination, Register code_object) override; |
| void CallCodeObject(Register code_object) override; |
| void JumpCodeObject(Register code_object) override; |
| |
| void RetpolineCall(Register reg); |
| void RetpolineCall(Address destination, RelocInfo::Mode rmode); |
| |
| void Jump(Address destination, RelocInfo::Mode rmode); |
| void Jump(const ExternalReference& reference) override; |
| void Jump(Operand op); |
| void Jump(Handle<Code> code_object, RelocInfo::Mode rmode, |
| Condition cc = always); |
| |
| void RetpolineJump(Register reg); |
| |
| void CallForDeoptimization(Builtins::Name target, int deopt_id, Label* exit, |
| DeoptimizeKind kind, |
| Label* jump_deoptimization_entry_label); |
| |
| void Trap() override; |
| void DebugBreak() override; |
| |
| // Shufps that will mov src into dst if AVX is not supported. |
| void Shufps(XMMRegister dst, XMMRegister src, byte imm8); |
| |
| // Non-SSE2 instructions. |
| void Pextrd(Register dst, XMMRegister src, uint8_t imm8); |
| |
| void Pinsrb(XMMRegister dst, XMMRegister src1, Register src2, uint8_t imm8); |
| void Pinsrb(XMMRegister dst, XMMRegister src1, Operand src2, uint8_t imm8); |
| void Pinsrw(XMMRegister dst, XMMRegister src1, Register src2, uint8_t imm8); |
| void Pinsrw(XMMRegister dst, XMMRegister src1, Operand src2, uint8_t imm8); |
| void Pinsrd(XMMRegister dst, XMMRegister src1, Register src2, uint8_t imm8); |
| void Pinsrd(XMMRegister dst, XMMRegister src1, Operand src2, uint8_t imm8); |
| void Pinsrd(XMMRegister dst, Register src2, uint8_t imm8); |
| void Pinsrd(XMMRegister dst, Operand src2, uint8_t imm8); |
| void Pinsrq(XMMRegister dst, XMMRegister src1, Register src2, uint8_t imm8); |
| void Pinsrq(XMMRegister dst, XMMRegister src1, Operand src2, uint8_t imm8); |
| |
| void Psllq(XMMRegister dst, int imm8) { Psllq(dst, static_cast<byte>(imm8)); } |
| void Psllq(XMMRegister dst, byte imm8); |
| void Psrlq(XMMRegister dst, int imm8) { Psrlq(dst, static_cast<byte>(imm8)); } |
| void Psrlq(XMMRegister dst, byte imm8); |
| void Pslld(XMMRegister dst, byte imm8); |
| void Psrld(XMMRegister dst, byte imm8); |
| |
| void Pblendvb(XMMRegister dst, XMMRegister src1, XMMRegister src2, |
| XMMRegister mask); |
| void Blendvps(XMMRegister dst, XMMRegister src1, XMMRegister src2, |
| XMMRegister mask); |
| void Blendvpd(XMMRegister dst, XMMRegister src1, XMMRegister src2, |
| XMMRegister mask); |
| |
| // Supports both SSE and AVX. Move src1 to dst if they are not equal on SSE. |
| void Pshufb(XMMRegister dst, XMMRegister src1, XMMRegister src2); |
| |
| void CompareRoot(Register with, RootIndex index); |
| void CompareRoot(Operand with, RootIndex index); |
| |
| // Generates function and stub prologue code. |
| void StubPrologue(StackFrame::Type type); |
| void Prologue(); |
| |
| // Calls Abort(msg) if the condition cc is not satisfied. |
| // Use --debug_code to enable. |
| void Assert(Condition cc, AbortReason reason); |
| |
| // Like Assert(), but without condition. |
| // Use --debug_code to enable. |
| void AssertUnreachable(AbortReason reason); |
| |
| // Abort execution if a 64 bit register containing a 32 bit payload does not |
| // have zeros in the top 32 bits, enabled via --debug-code. |
| void AssertZeroExtended(Register reg); |
| |
| // Like Assert(), but always enabled. |
| void Check(Condition cc, AbortReason reason); |
| |
| // Print a message to stdout and abort execution. |
| void Abort(AbortReason msg); |
| |
| // Check that the stack is aligned. |
| void CheckStackAlignment(); |
| |
| // Activation support. |
| void EnterFrame(StackFrame::Type type); |
| void EnterFrame(StackFrame::Type type, bool load_constant_pool_pointer_reg) { |
| // Out-of-line constant pool not implemented on x64. |
| UNREACHABLE(); |
| } |
| void LeaveFrame(StackFrame::Type type); |
| |
| // Allocate stack space of given size (i.e. decrement {rsp} by the value |
| // stored in the given register, or by a constant). If you need to perform a |
| // stack check, do it before calling this function because this function may |
| // write into the newly allocated space. It may also overwrite the given |
| // register's value, in the version that takes a register. |
| #ifdef V8_TARGET_OS_WIN |
| void AllocateStackSpace(Register bytes_scratch); |
| void AllocateStackSpace(int bytes); |
| #else |
| void AllocateStackSpace(Register bytes) { subq(rsp, bytes); } |
| void AllocateStackSpace(int bytes) { subq(rsp, Immediate(bytes)); } |
| #endif |
| |
| // Removes current frame and its arguments from the stack preserving the |
| // arguments and a return address pushed to the stack for the next call. Both |
| // |callee_args_count| and |caller_args_count| do not include receiver. |
| // |callee_args_count| is not modified. |caller_args_count| is trashed. |
| void PrepareForTailCall(Register callee_args_count, |
| Register caller_args_count, Register scratch0, |
| Register scratch1); |
| |
| void InitializeRootRegister() { |
| ExternalReference isolate_root = ExternalReference::isolate_root(isolate()); |
| Move(kRootRegister, isolate_root); |
| } |
| |
| void SaveRegisters(RegList registers); |
| void RestoreRegisters(RegList registers); |
| |
| void CallRecordWriteStub(Register object, Register address, |
| RememberedSetAction remembered_set_action, |
| SaveFPRegsMode fp_mode); |
| void CallRecordWriteStub(Register object, Register address, |
| RememberedSetAction remembered_set_action, |
| SaveFPRegsMode fp_mode, Address wasm_target); |
| void CallEphemeronKeyBarrier(Register object, Register address, |
| SaveFPRegsMode fp_mode); |
| |
| void MoveNumber(Register dst, double value); |
| void MoveNonSmi(Register dst, double value); |
| |
| // Calculate how much stack space (in bytes) are required to store caller |
| // registers excluding those specified in the arguments. |
| int RequiredStackSizeForCallerSaved(SaveFPRegsMode fp_mode, |
| Register exclusion1 = no_reg, |
| Register exclusion2 = no_reg, |
| Register exclusion3 = no_reg) const; |
| |
| // PushCallerSaved and PopCallerSaved do not arrange the registers in any |
| // particular order so they are not useful for calls that can cause a GC. |
| // The caller can exclude up to 3 registers that do not need to be saved and |
| // restored. |
| |
| // Push caller saved registers on the stack, and return the number of bytes |
| // stack pointer is adjusted. |
| int PushCallerSaved(SaveFPRegsMode fp_mode, Register exclusion1 = no_reg, |
| Register exclusion2 = no_reg, |
| Register exclusion3 = no_reg); |
| // Restore caller saved registers from the stack, and return the number of |
| // bytes stack pointer is adjusted. |
| int PopCallerSaved(SaveFPRegsMode fp_mode, Register exclusion1 = no_reg, |
| Register exclusion2 = no_reg, |
| Register exclusion3 = no_reg); |
| |
| // Compute the start of the generated instruction stream from the current PC. |
| // This is an alternative to embedding the {CodeObject} handle as a reference. |
| void ComputeCodeStartAddress(Register dst); |
| |
| void ResetSpeculationPoisonRegister(); |
| |
| // Control-flow integrity: |
| |
| // Define a function entrypoint. This doesn't emit any code for this |
| // architecture, as control-flow integrity is not supported for it. |
| void CodeEntry() {} |
| // Define an exception handler. |
| void ExceptionHandler() {} |
| // Define an exception handler and bind a label. |
| void BindExceptionHandler(Label* label) { bind(label); } |
| |
| // --------------------------------------------------------------------------- |
| // Pointer compression support |
| |
| // Loads a field containing a HeapObject and decompresses it if pointer |
| // compression is enabled. |
| void LoadTaggedPointerField(Register destination, Operand field_operand); |
| |
| // Loads a field containing any tagged value and decompresses it if necessary. |
| void LoadAnyTaggedField(Register destination, Operand field_operand); |
| |
| // Loads a field containing a HeapObject, decompresses it if necessary and |
| // pushes full pointer to the stack. When pointer compression is enabled, |
| // uses |scratch| to decompress the value. |
| void PushTaggedPointerField(Operand field_operand, Register scratch); |
| |
| // Loads a field containing any tagged value, decompresses it if necessary and |
| // pushes the full pointer to the stack. When pointer compression is enabled, |
| // uses |scratch| to decompress the value. |
| void PushTaggedAnyField(Operand field_operand, Register scratch); |
| |
| // Loads a field containing smi value and untags it. |
| void SmiUntagField(Register dst, Operand src); |
| |
| // Compresses tagged value if necessary and stores it to given on-heap |
| // location. |
| void StoreTaggedField(Operand dst_field_operand, Immediate immediate); |
| void StoreTaggedField(Operand dst_field_operand, Register value); |
| |
| // The following macros work even when pointer compression is not enabled. |
| void DecompressTaggedSigned(Register destination, Operand field_operand); |
| void DecompressTaggedPointer(Register destination, Operand field_operand); |
| void DecompressTaggedPointer(Register destination, Register source); |
| void DecompressAnyTagged(Register destination, Operand field_operand); |
| |
| // --------------------------------------------------------------------------- |
| // V8 Heap sandbox support |
| |
| // Loads a field containing off-heap pointer and does necessary decoding |
| // if V8 heap sandbox is enabled. |
| void LoadExternalPointerField(Register destination, Operand field_operand, |
| ExternalPointerTag tag); |
| |
| protected: |
| static const int kSmiShift = kSmiTagSize + kSmiShiftSize; |
| |
| // Returns a register holding the smi value. The register MUST NOT be |
| // modified. It may be the "smi 1 constant" register. |
| Register GetSmiConstant(Smi value); |
| |
| void CallRecordWriteStub(Register object, Register address, |
| RememberedSetAction remembered_set_action, |
| SaveFPRegsMode fp_mode, Handle<Code> code_target, |
| Address wasm_target); |
| }; |
| |
| // MacroAssembler implements a collection of frequently used macros. |
| class V8_EXPORT_PRIVATE MacroAssembler : public TurboAssembler { |
| public: |
| using TurboAssembler::TurboAssembler; |
| |
| // Loads and stores the value of an external reference. |
| // Special case code for load and store to take advantage of |
| // load_rax/store_rax if possible/necessary. |
| // For other operations, just use: |
| // Operand operand = ExternalReferenceAsOperand(extref); |
| // operation(operand, ..); |
| void Load(Register destination, ExternalReference source); |
| void Store(ExternalReference destination, Register source); |
| |
| // Pushes the address of the external reference onto the stack. |
| void PushAddress(ExternalReference source); |
| |
| // Operations on roots in the root-array. |
| // Load a root value where the index (or part of it) is variable. |
| // The variable_offset register is added to the fixed_offset value |
| // to get the index into the root-array. |
| void PushRoot(RootIndex index); |
| |
| // Compare the object in a register to a value and jump if they are equal. |
| void JumpIfRoot(Register with, RootIndex index, Label* if_equal, |
| Label::Distance if_equal_distance = Label::kFar) { |
| CompareRoot(with, index); |
| j(equal, if_equal, if_equal_distance); |
| } |
| void JumpIfRoot(Operand with, RootIndex index, Label* if_equal, |
| Label::Distance if_equal_distance = Label::kFar) { |
| CompareRoot(with, index); |
| j(equal, if_equal, if_equal_distance); |
| } |
| |
| // Compare the object in a register to a value and jump if they are not equal. |
| void JumpIfNotRoot(Register with, RootIndex index, Label* if_not_equal, |
| Label::Distance if_not_equal_distance = Label::kFar) { |
| CompareRoot(with, index); |
| j(not_equal, if_not_equal, if_not_equal_distance); |
| } |
| void JumpIfNotRoot(Operand with, RootIndex index, Label* if_not_equal, |
| Label::Distance if_not_equal_distance = Label::kFar) { |
| CompareRoot(with, index); |
| j(not_equal, if_not_equal, if_not_equal_distance); |
| } |
| |
| // --------------------------------------------------------------------------- |
| // GC Support |
| |
| // Notify the garbage collector that we wrote a pointer into an object. |
| // |object| is the object being stored into, |value| is the object being |
| // stored. value and scratch registers are clobbered by the operation. |
| // The offset is the offset from the start of the object, not the offset from |
| // the tagged HeapObject pointer. For use with FieldOperand(reg, off). |
| void RecordWriteField( |
| Register object, int offset, Register value, Register scratch, |
| SaveFPRegsMode save_fp, |
| RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, |
| SmiCheck smi_check = INLINE_SMI_CHECK); |
| |
| // For page containing |object| mark region covering |address| |
| // dirty. |object| is the object being stored into, |value| is the |
| // object being stored. The address and value registers are clobbered by the |
| // operation. RecordWrite filters out smis so it does not update |
| // the write barrier if the value is a smi. |
| void RecordWrite( |
| Register object, Register address, Register value, SaveFPRegsMode save_fp, |
| RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, |
| SmiCheck smi_check = INLINE_SMI_CHECK); |
| |
| // Frame restart support. |
| void MaybeDropFrames(); |
| |
| // Enter specific kind of exit frame; either in normal or |
| // debug mode. Expects the number of arguments in register rax and |
| // sets up the number of arguments in register rdi and the pointer |
| // to the first argument in register rsi. |
| // |
| // Allocates arg_stack_space * kSystemPointerSize memory (not GCed) on the |
| // stack accessible via StackSpaceOperand. |
| void EnterExitFrame(int arg_stack_space = 0, bool save_doubles = false, |
| StackFrame::Type frame_type = StackFrame::EXIT); |
| |
| // Enter specific kind of exit frame. Allocates |
| // (arg_stack_space * kSystemPointerSize) memory (not GCed) on the stack |
| // accessible via StackSpaceOperand. |
| void EnterApiExitFrame(int arg_stack_space); |
| |
| // Leave the current exit frame. Expects/provides the return value in |
| // register rax:rdx (untouched) and the pointer to the first |
| // argument in register rsi (if pop_arguments == true). |
| void LeaveExitFrame(bool save_doubles = false, bool pop_arguments = true); |
| |
| // Leave the current exit frame. Expects/provides the return value in |
| // register rax (untouched). |
| void LeaveApiExitFrame(); |
| |
| // --------------------------------------------------------------------------- |
| // JavaScript invokes |
| |
| // Invoke the JavaScript function code by either calling or jumping. |
| void InvokeFunctionCode(Register function, Register new_target, |
| Register expected_parameter_count, |
| Register actual_parameter_count, InvokeFlag flag); |
| |
| // On function call, call into the debugger. |
| void CallDebugOnFunctionCall(Register fun, Register new_target, |
| Register expected_parameter_count, |
| Register actual_parameter_count); |
| |
| // Invoke the JavaScript function in the given register. Changes the |
| // current context to the context in the function before invoking. |
| void InvokeFunction(Register function, Register new_target, |
| Register actual_parameter_count, InvokeFlag flag); |
| |
| void InvokeFunction(Register function, Register new_target, |
| Register expected_parameter_count, |
| Register actual_parameter_count, InvokeFlag flag); |
| |
| // --------------------------------------------------------------------------- |
| // Conversions between tagged smi values and non-tagged integer values. |
| |
| // Tag an word-size value. The result must be known to be a valid smi value. |
| void SmiTag(Register reg); |
| // Requires dst != src |
| void SmiTag(Register dst, Register src); |
| |
| // Simple comparison of smis. Both sides must be known smis to use these, |
| // otherwise use Cmp. |
| void SmiCompare(Register smi1, Register smi2); |
| void SmiCompare(Register dst, Smi src); |
| void SmiCompare(Register dst, Operand src); |
| void SmiCompare(Operand dst, Register src); |
| void SmiCompare(Operand dst, Smi src); |
| |
| // Functions performing a check on a known or potential smi. Returns |
| // a condition that is satisfied if the check is successful. |
| |
| // Test-and-jump functions. Typically combines a check function |
| // above with a conditional jump. |
| |
| // Jump to label if the value is not a tagged smi. |
| void JumpIfNotSmi(Register src, Label* on_not_smi, |
| Label::Distance near_jump = Label::kFar); |
| |
| // Jump to label if the value is not a tagged smi. |
| void JumpIfNotSmi(Operand src, Label* on_not_smi, |
| Label::Distance near_jump = Label::kFar); |
| |
| // Operations on tagged smi values. |
| |
| // Smis represent a subset of integers. The subset is always equivalent to |
| // a two's complement interpretation of a fixed number of bits. |
| |
| // Add an integer constant to a tagged smi, giving a tagged smi as result. |
| // No overflow testing on the result is done. |
| void SmiAddConstant(Operand dst, Smi constant); |
| |
| // Specialized operations |
| |
| // Converts, if necessary, a smi to a combination of number and |
| // multiplier to be used as a scaled index. |
| // The src register contains a *positive* smi value. The shift is the |
| // power of two to multiply the index value by (e.g. to index by |
| // smi-value * kSystemPointerSize, pass the smi and kSystemPointerSizeLog2). |
| // The returned index register may be either src or dst, depending |
| // on what is most efficient. If src and dst are different registers, |
| // src is always unchanged. |
| SmiIndex SmiToIndex(Register dst, Register src, int shift); |
| |
| // --------------------------------------------------------------------------- |
| // Macro instructions. |
| |
| void Cmp(Register dst, Handle<Object> source); |
| void Cmp(Operand dst, Handle<Object> source); |
| void Cmp(Register dst, Smi src); |
| void Cmp(Operand dst, Smi src); |
| void Cmp(Register dst, int32_t src); |
| |
| // Checks if value is in range [lower_limit, higher_limit] using a single |
| // comparison. |
| void JumpIfIsInRange(Register value, unsigned lower_limit, |
| unsigned higher_limit, Label* on_in_range, |
| Label::Distance near_jump = Label::kFar); |
| |
| // Emit code to discard a non-negative number of pointer-sized elements |
| // from the stack, clobbering only the rsp register. |
| void Drop(int stack_elements); |
| // Emit code to discard a positive number of pointer-sized elements |
| // from the stack under the return address which remains on the top, |
| // clobbering the rsp register. |
| void DropUnderReturnAddress(int stack_elements, |
| Register scratch = kScratchRegister); |
| |
| void PushQuad(Operand src); |
| void PushImm32(int32_t imm32); |
| void Pop(Register dst); |
| void Pop(Operand dst); |
| void PopQuad(Operand dst); |
| |
| // --------------------------------------------------------------------------- |
| // SIMD macros. |
| void Absps(XMMRegister dst); |
| void Negps(XMMRegister dst); |
| void Abspd(XMMRegister dst); |
| void Negpd(XMMRegister dst); |
| // Generates a trampoline to jump to the off-heap instruction stream. |
| void JumpToInstructionStream(Address entry); |
| |
| // Compare object type for heap object. |
| // Always use unsigned comparisons: above and below, not less and greater. |
| // Incoming register is heap_object and outgoing register is map. |
| // They may be the same register, and may be kScratchRegister. |
| void CmpObjectType(Register heap_object, InstanceType type, Register map); |
| |
| // Compare instance type for map. |
| // Always use unsigned comparisons: above and below, not less and greater. |
| void CmpInstanceType(Register map, InstanceType type); |
| |
| template <typename Field> |
| void DecodeField(Register reg) { |
| static const int shift = Field::kShift; |
| static const int mask = Field::kMask >> Field::kShift; |
| if (shift != 0) { |
| shrq(reg, Immediate(shift)); |
| } |
| andq(reg, Immediate(mask)); |
| } |
| |
| // Abort execution if argument is a smi, enabled via --debug-code. |
| void AssertNotSmi(Register object); |
| |
| // Abort execution if argument is not a smi, enabled via --debug-code. |
| void AssertSmi(Register object); |
| void AssertSmi(Operand object); |
| |
| // Abort execution if argument is not a Constructor, enabled via --debug-code. |
| void AssertConstructor(Register object); |
| |
| // Abort execution if argument is not a JSFunction, enabled via --debug-code. |
| void AssertFunction(Register object); |
| |
| // Abort execution if argument is not a JSBoundFunction, |
| // enabled via --debug-code. |
| void AssertBoundFunction(Register object); |
| |
| // Abort execution if argument is not a JSGeneratorObject (or subclass), |
| // enabled via --debug-code. |
| void AssertGeneratorObject(Register object); |
| |
| // Abort execution if argument is not undefined or an AllocationSite, enabled |
| // via --debug-code. |
| void AssertUndefinedOrAllocationSite(Register object); |
| |
| // --------------------------------------------------------------------------- |
| // Exception handling |
| |
| // Push a new stack handler and link it into stack handler chain. |
| void PushStackHandler(); |
| |
| // Unlink the stack handler on top of the stack from the stack handler chain. |
| void PopStackHandler(); |
| |
| // --------------------------------------------------------------------------- |
| // Support functions. |
| |
| // Load the global proxy from the current context. |
| void LoadGlobalProxy(Register dst) { |
| LoadNativeContextSlot(Context::GLOBAL_PROXY_INDEX, dst); |
| } |
| |
| // Load the native context slot with the current index. |
| void LoadNativeContextSlot(int index, Register dst); |
| |
| // --------------------------------------------------------------------------- |
| // Runtime calls |
| |
| // Call a runtime routine. |
| void CallRuntime(const Runtime::Function* f, int num_arguments, |
| SaveFPRegsMode save_doubles = kDontSaveFPRegs); |
| |
| // Convenience function: Same as above, but takes the fid instead. |
| void CallRuntime(Runtime::FunctionId fid, |
| SaveFPRegsMode save_doubles = kDontSaveFPRegs) { |
| const Runtime::Function* function = Runtime::FunctionForId(fid); |
| CallRuntime(function, function->nargs, save_doubles); |
| } |
| |
| // Convenience function: Same as above, but takes the fid instead. |
| void CallRuntime(Runtime::FunctionId fid, int num_arguments, |
| SaveFPRegsMode save_doubles = kDontSaveFPRegs) { |
| CallRuntime(Runtime::FunctionForId(fid), num_arguments, save_doubles); |
| } |
| |
| // Convenience function: tail call a runtime routine (jump) |
| void TailCallRuntime(Runtime::FunctionId fid); |
| |
| // Jump to a runtime routines |
| void JumpToExternalReference(const ExternalReference& ext, |
| bool builtin_exit_frame = false); |
| |
| // --------------------------------------------------------------------------- |
| // StatsCounter support |
| void IncrementCounter(StatsCounter* counter, int value); |
| void DecrementCounter(StatsCounter* counter, int value); |
| |
| // --------------------------------------------------------------------------- |
| // Stack limit utilities |
| Operand StackLimitAsOperand(StackLimitKind kind); |
| void StackOverflowCheck( |
| Register num_args, Register scratch, Label* stack_overflow, |
| Label::Distance stack_overflow_distance = Label::kFar); |
| |
| // --------------------------------------------------------------------------- |
| // In-place weak references. |
| void LoadWeakValue(Register in_out, Label* target_if_cleared); |
| |
| // --------------------------------------------------------------------------- |
| // Debugging |
| |
| static int SafepointRegisterStackIndex(Register reg) { |
| return SafepointRegisterStackIndex(reg.code()); |
| } |
| |
| private: |
| // Order general registers are pushed by Pushad. |
| // rax, rcx, rdx, rbx, rsi, rdi, r8, r9, r11, r12, r14, r15. |
| static const int kSafepointPushRegisterIndices[Register::kNumRegisters]; |
| static const int kNumSafepointSavedRegisters = 12; |
| |
| // Helper functions for generating invokes. |
| void InvokePrologue(Register expected_parameter_count, |
| Register actual_parameter_count, Label* done, |
| InvokeFlag flag); |
| |
| void EnterExitFramePrologue(bool save_rax, StackFrame::Type frame_type); |
| |
| // Allocates arg_stack_space * kSystemPointerSize memory (not GCed) on the |
| // stack accessible via StackSpaceOperand. |
| void EnterExitFrameEpilogue(int arg_stack_space, bool save_doubles); |
| |
| void LeaveExitFrameEpilogue(); |
| |
| // Compute memory operands for safepoint stack slots. |
| static int SafepointRegisterStackIndex(int reg_code) { |
| return kNumSafepointRegisters - kSafepointPushRegisterIndices[reg_code] - 1; |
| } |
| |
| // Needs access to SafepointRegisterStackIndex for compiled frame |
| // traversal. |
| friend class CommonFrame; |
| |
| DISALLOW_IMPLICIT_CONSTRUCTORS(MacroAssembler); |
| }; |
| |
| // ----------------------------------------------------------------------------- |
| // Static helper functions. |
| |
| // Generate an Operand for loading a field from an object. |
| inline Operand FieldOperand(Register object, int offset) { |
| return Operand(object, offset - kHeapObjectTag); |
| } |
| |
| // Generate an Operand for loading an indexed field from an object. |
| inline Operand FieldOperand(Register object, Register index, ScaleFactor scale, |
| int offset) { |
| return Operand(object, index, scale, offset - kHeapObjectTag); |
| } |
| |
| // Provides access to exit frame stack space (not GCed). |
| inline Operand StackSpaceOperand(int index) { |
| #ifdef V8_TARGET_OS_WIN |
| const int kShaddowSpace = 4; |
| return Operand(rsp, (index + kShaddowSpace) * kSystemPointerSize); |
| #else |
| return Operand(rsp, index * kSystemPointerSize); |
| #endif |
| } |
| |
| inline Operand StackOperandForReturnAddress(int32_t disp) { |
| return Operand(rsp, disp); |
| } |
| |
| #define ACCESS_MASM(masm) masm-> |
| |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_CODEGEN_X64_MACRO_ASSEMBLER_X64_H_ |
