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Diffstat (limited to 'js/src/jit/loong64/MacroAssembler-loong64.h')
| -rw-r--r-- | js/src/jit/loong64/MacroAssembler-loong64.h | 1037 |
1 files changed, 1037 insertions, 0 deletions
diff --git a/js/src/jit/loong64/MacroAssembler-loong64.h b/js/src/jit/loong64/MacroAssembler-loong64.h new file mode 100644 index 0000000000..722c30f0eb --- /dev/null +++ b/js/src/jit/loong64/MacroAssembler-loong64.h @@ -0,0 +1,1037 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * vim: set ts=8 sts=2 et sw=2 tw=80: + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef jit_loong64_MacroAssembler_loong64_h +#define jit_loong64_MacroAssembler_loong64_h + +#include "jit/loong64/Assembler-loong64.h" +#include "jit/MoveResolver.h" +#include "wasm/WasmBuiltins.h" + +namespace js { +namespace jit { + +enum LoadStoreSize { + SizeByte = 8, + SizeHalfWord = 16, + SizeWord = 32, + SizeDouble = 64 +}; + +enum LoadStoreExtension { ZeroExtend = 0, SignExtend = 1 }; + +enum JumpKind { LongJump = 0, ShortJump = 1 }; + +static Register CallReg = t8; + +enum LiFlags { + Li64 = 0, + Li48 = 1, +}; + +struct ImmShiftedTag : public ImmWord { + explicit ImmShiftedTag(JSValueShiftedTag shtag) : ImmWord((uintptr_t)shtag) {} + + explicit ImmShiftedTag(JSValueType type) + : ImmWord(uintptr_t(JSValueShiftedTag(JSVAL_TYPE_TO_SHIFTED_TAG(type)))) { + } +}; + +struct ImmTag : public Imm32 { + ImmTag(JSValueTag mask) : Imm32(int32_t(mask)) {} +}; + +static const int defaultShift = 3; +static_assert(1 << defaultShift == sizeof(JS::Value), + "The defaultShift is wrong"); + +// See documentation for ScratchTagScope and ScratchTagScopeRelease in +// MacroAssembler-x64.h. + +class ScratchTagScope : public SecondScratchRegisterScope { + public: + ScratchTagScope(MacroAssembler& masm, const ValueOperand&) + : SecondScratchRegisterScope(masm) {} +}; + +class ScratchTagScopeRelease { + ScratchTagScope* ts_; + + public: + explicit ScratchTagScopeRelease(ScratchTagScope* ts) : ts_(ts) { + ts_->release(); + } + ~ScratchTagScopeRelease() { ts_->reacquire(); } +}; + +class MacroAssemblerLOONG64 : public Assembler { + protected: + // Perform a downcast. Should be removed by Bug 996602. + MacroAssembler& asMasm(); + const MacroAssembler& asMasm() const; + + Condition ma_cmp(Register rd, Register lhs, Register rhs, Condition c); + Condition ma_cmp(Register rd, Register lhs, Imm32 imm, Condition c); + + void compareFloatingPoint(FloatFormat fmt, FloatRegister lhs, + FloatRegister rhs, DoubleCondition c, + FPConditionBit fcc = FCC0); + + public: + void ma_li(Register dest, CodeLabel* label); + void ma_li(Register dest, ImmWord imm); + void ma_liPatchable(Register dest, ImmPtr imm); + void ma_liPatchable(Register dest, ImmWord imm, LiFlags flags = Li48); + + // load + void ma_ld_b(Register dest, Address address); + void ma_ld_h(Register dest, Address address); + void ma_ld_w(Register dest, Address address); + void ma_ld_d(Register dest, Address address); + void ma_ld_bu(Register dest, Address address); + void ma_ld_hu(Register dest, Address address); + void ma_ld_wu(Register dest, Address address); + void ma_load(Register dest, Address address, LoadStoreSize size = SizeWord, + LoadStoreExtension extension = SignExtend); + + // store + void ma_st_b(Register src, Address address); + void ma_st_h(Register src, Address address); + void ma_st_w(Register src, Address address); + void ma_st_d(Register src, Address address); + void ma_store(Register data, Address address, LoadStoreSize size = SizeWord, + LoadStoreExtension extension = SignExtend); + + // arithmetic based ops + // add + void ma_add_d(Register rd, Register rj, Imm32 imm); + void ma_add32TestOverflow(Register rd, Register rj, Register rk, + Label* overflow); + void ma_add32TestOverflow(Register rd, Register rj, Imm32 imm, + Label* overflow); + void ma_addPtrTestOverflow(Register rd, Register rj, Register rk, + Label* overflow); + void ma_addPtrTestOverflow(Register rd, Register rj, Imm32 imm, + Label* overflow); + void ma_addPtrTestOverflow(Register rd, Register rj, ImmWord imm, + Label* overflow); + void ma_addPtrTestCarry(Condition cond, Register rd, Register rj, Register rk, + Label* overflow); + void ma_addPtrTestCarry(Condition cond, Register rd, Register rj, Imm32 imm, + Label* overflow); + void ma_addPtrTestCarry(Condition cond, Register rd, Register rj, ImmWord imm, + Label* overflow); + + // subtract + void ma_sub_d(Register rd, Register rj, Imm32 imm); + void ma_sub32TestOverflow(Register rd, Register rj, Register rk, + Label* overflow); + void ma_subPtrTestOverflow(Register rd, Register rj, Register rk, + Label* overflow); + void ma_subPtrTestOverflow(Register rd, Register rj, Imm32 imm, + Label* overflow); + + // multiplies. For now, there are only few that we care about. + void ma_mul_d(Register rd, Register rj, Imm32 imm); + void ma_mulh_d(Register rd, Register rj, Imm32 imm); + void ma_mulPtrTestOverflow(Register rd, Register rj, Register rk, + Label* overflow); + + // stack + void ma_pop(Register r); + void ma_push(Register r); + + void branchWithCode(InstImm code, Label* label, JumpKind jumpKind); + // branches when done from within la-specific code + void ma_b(Register lhs, ImmWord imm, Label* l, Condition c, + JumpKind jumpKind = LongJump); + void ma_b(Register lhs, Address addr, Label* l, Condition c, + JumpKind jumpKind = LongJump); + void ma_b(Address addr, Imm32 imm, Label* l, Condition c, + JumpKind jumpKind = LongJump); + void ma_b(Address addr, ImmGCPtr imm, Label* l, Condition c, + JumpKind jumpKind = LongJump); + void ma_b(Address addr, Register rhs, Label* l, Condition c, + JumpKind jumpKind = LongJump) { + ScratchRegisterScope scratch(asMasm()); + MOZ_ASSERT(rhs != scratch); + ma_ld_d(scratch, addr); + ma_b(scratch, rhs, l, c, jumpKind); + } + + void ma_bl(Label* l); + + // fp instructions + void ma_lid(FloatRegister dest, double value); + + void ma_mv(FloatRegister src, ValueOperand dest); + void ma_mv(ValueOperand src, FloatRegister dest); + + void ma_fld_s(FloatRegister ft, Address address); + void ma_fld_d(FloatRegister ft, Address address); + void ma_fst_d(FloatRegister ft, Address address); + void ma_fst_s(FloatRegister ft, Address address); + + void ma_pop(FloatRegister f); + void ma_push(FloatRegister f); + + void ma_cmp_set(Register dst, Register lhs, ImmWord imm, Condition c); + void ma_cmp_set(Register dst, Register lhs, ImmPtr imm, Condition c); + void ma_cmp_set(Register dst, Address address, Imm32 imm, Condition c); + void ma_cmp_set(Register dst, Address address, ImmWord imm, Condition c); + + void moveIfZero(Register dst, Register src, Register cond) { + ScratchRegisterScope scratch(asMasm()); + MOZ_ASSERT(dst != scratch && cond != scratch); + as_masknez(scratch, src, cond); + as_maskeqz(dst, dst, cond); + as_or(dst, dst, scratch); + } + void moveIfNotZero(Register dst, Register src, Register cond) { + ScratchRegisterScope scratch(asMasm()); + MOZ_ASSERT(dst != scratch && cond != scratch); + as_maskeqz(scratch, src, cond); + as_masknez(dst, dst, cond); + as_or(dst, dst, scratch); + } + + // These functions abstract the access to high part of the double precision + // float register. They are intended to work on both 32 bit and 64 bit + // floating point coprocessor. + void moveToDoubleHi(Register src, FloatRegister dest) { + as_movgr2frh_w(dest, src); + } + void moveFromDoubleHi(FloatRegister src, Register dest) { + as_movfrh2gr_s(dest, src); + } + + void moveToDouble(Register src, FloatRegister dest) { + as_movgr2fr_d(dest, src); + } + void moveFromDouble(FloatRegister src, Register dest) { + as_movfr2gr_d(dest, src); + } + + public: + void ma_li(Register dest, ImmGCPtr ptr); + + void ma_li(Register dest, Imm32 imm); + void ma_liPatchable(Register dest, Imm32 imm); + + void ma_rotr_w(Register rd, Register rj, Imm32 shift); + + void ma_fmovz(FloatFormat fmt, FloatRegister fd, FloatRegister fj, + Register rk); + void ma_fmovn(FloatFormat fmt, FloatRegister fd, FloatRegister fj, + Register rk); + + void ma_and(Register rd, Register rj, Imm32 imm, bool bit32 = false); + + void ma_or(Register rd, Register rj, Imm32 imm, bool bit32 = false); + + void ma_xor(Register rd, Register rj, Imm32 imm, bool bit32 = false); + + // load + void ma_load(Register dest, const BaseIndex& src, + LoadStoreSize size = SizeWord, + LoadStoreExtension extension = SignExtend); + + // store + void ma_store(Register data, const BaseIndex& dest, + LoadStoreSize size = SizeWord, + LoadStoreExtension extension = SignExtend); + void ma_store(Imm32 imm, const BaseIndex& dest, LoadStoreSize size = SizeWord, + LoadStoreExtension extension = SignExtend); + + // arithmetic based ops + // add + void ma_add_w(Register rd, Register rj, Imm32 imm); + void ma_add32TestCarry(Condition cond, Register rd, Register rj, Register rk, + Label* overflow); + void ma_add32TestCarry(Condition cond, Register rd, Register rj, Imm32 imm, + Label* overflow); + + // subtract + void ma_sub_w(Register rd, Register rj, Imm32 imm); + void ma_sub_w(Register rd, Register rj, Register rk); + void ma_sub32TestOverflow(Register rd, Register rj, Imm32 imm, + Label* overflow); + + // multiplies. For now, there are only few that we care about. + void ma_mul(Register rd, Register rj, Imm32 imm); + void ma_mul32TestOverflow(Register rd, Register rj, Register rk, + Label* overflow); + void ma_mul32TestOverflow(Register rd, Register rj, Imm32 imm, + Label* overflow); + + // divisions + void ma_div_branch_overflow(Register rd, Register rj, Register rk, + Label* overflow); + void ma_div_branch_overflow(Register rd, Register rj, Imm32 imm, + Label* overflow); + + // fast mod, uses scratch registers, and thus needs to be in the assembler + // implicitly assumes that we can overwrite dest at the beginning of the + // sequence + void ma_mod_mask(Register src, Register dest, Register hold, Register remain, + int32_t shift, Label* negZero = nullptr); + + // branches when done from within la-specific code + void ma_b(Register lhs, Register rhs, Label* l, Condition c, + JumpKind jumpKind = LongJump); + void ma_b(Register lhs, Imm32 imm, Label* l, Condition c, + JumpKind jumpKind = LongJump); + void ma_b(Register lhs, ImmPtr imm, Label* l, Condition c, + JumpKind jumpKind = LongJump); + void ma_b(Register lhs, ImmGCPtr imm, Label* l, Condition c, + JumpKind jumpKind = LongJump) { + ScratchRegisterScope scratch(asMasm()); + MOZ_ASSERT(lhs != scratch); + ma_li(scratch, imm); + ma_b(lhs, scratch, l, c, jumpKind); + } + + void ma_b(Label* l, JumpKind jumpKind = LongJump); + + // fp instructions + void ma_lis(FloatRegister dest, float value); + + void ma_fst_d(FloatRegister src, BaseIndex address); + void ma_fst_s(FloatRegister src, BaseIndex address); + + void ma_fld_d(FloatRegister dest, const BaseIndex& src); + void ma_fld_s(FloatRegister dest, const BaseIndex& src); + + // FP branches + void ma_bc_s(FloatRegister lhs, FloatRegister rhs, Label* label, + DoubleCondition c, JumpKind jumpKind = LongJump, + FPConditionBit fcc = FCC0); + void ma_bc_d(FloatRegister lhs, FloatRegister rhs, Label* label, + DoubleCondition c, JumpKind jumpKind = LongJump, + FPConditionBit fcc = FCC0); + + void ma_call(ImmPtr dest); + + void ma_jump(ImmPtr dest); + + void ma_cmp_set(Register dst, Register lhs, Register rhs, Condition c); + void ma_cmp_set(Register dst, Register lhs, Imm32 imm, Condition c); + void ma_cmp_set_double(Register dst, FloatRegister lhs, FloatRegister rhs, + DoubleCondition c); + void ma_cmp_set_float32(Register dst, FloatRegister lhs, FloatRegister rhs, + DoubleCondition c); + + void moveToDoubleLo(Register src, FloatRegister dest) { + as_movgr2fr_w(dest, src); + } + void moveFromDoubleLo(FloatRegister src, Register dest) { + as_movfr2gr_s(dest, src); + } + + void moveToFloat32(Register src, FloatRegister dest) { + as_movgr2fr_w(dest, src); + } + void moveFromFloat32(FloatRegister src, Register dest) { + as_movfr2gr_s(dest, src); + } + + // Evaluate srcDest = minmax<isMax>{Float32,Double}(srcDest, other). + // Handle NaN specially if handleNaN is true. + void minMaxDouble(FloatRegister srcDest, FloatRegister other, bool handleNaN, + bool isMax); + void minMaxFloat32(FloatRegister srcDest, FloatRegister other, bool handleNaN, + bool isMax); + + void loadDouble(const Address& addr, FloatRegister dest); + void loadDouble(const BaseIndex& src, FloatRegister dest); + + // Load a float value into a register, then expand it to a double. + void loadFloatAsDouble(const Address& addr, FloatRegister dest); + void loadFloatAsDouble(const BaseIndex& src, FloatRegister dest); + + void loadFloat32(const Address& addr, FloatRegister dest); + void loadFloat32(const BaseIndex& src, FloatRegister dest); + + void outOfLineWasmTruncateToInt32Check(FloatRegister input, Register output, + MIRType fromType, TruncFlags flags, + Label* rejoin, + wasm::BytecodeOffset trapOffset); + void outOfLineWasmTruncateToInt64Check(FloatRegister input, Register64 output, + MIRType fromType, TruncFlags flags, + Label* rejoin, + wasm::BytecodeOffset trapOffset); + + protected: + void wasmLoadImpl(const wasm::MemoryAccessDesc& access, Register memoryBase, + Register ptr, Register ptrScratch, AnyRegister output, + Register tmp); + void wasmStoreImpl(const wasm::MemoryAccessDesc& access, AnyRegister value, + Register memoryBase, Register ptr, Register ptrScratch, + Register tmp); +}; + +class MacroAssembler; + +class MacroAssemblerLOONG64Compat : public MacroAssemblerLOONG64 { + public: + using MacroAssemblerLOONG64::call; + + MacroAssemblerLOONG64Compat() {} + + void convertBoolToInt32(Register src, Register dest) { + ma_and(dest, src, Imm32(0xff)); + }; + void convertInt32ToDouble(Register src, FloatRegister dest) { + as_movgr2fr_w(dest, src); + as_ffint_d_w(dest, dest); + }; + void convertInt32ToDouble(const Address& src, FloatRegister dest) { + ma_fld_s(dest, src); + as_ffint_d_w(dest, dest); + }; + void convertInt32ToDouble(const BaseIndex& src, FloatRegister dest) { + ScratchRegisterScope scratch(asMasm()); + MOZ_ASSERT(scratch != src.base); + MOZ_ASSERT(scratch != src.index); + computeScaledAddress(src, scratch); + convertInt32ToDouble(Address(scratch, src.offset), dest); + }; + void convertUInt32ToDouble(Register src, FloatRegister dest); + void convertUInt32ToFloat32(Register src, FloatRegister dest); + void convertDoubleToFloat32(FloatRegister src, FloatRegister dest); + void convertDoubleToInt32(FloatRegister src, Register dest, Label* fail, + bool negativeZeroCheck = true); + void convertDoubleToPtr(FloatRegister src, Register dest, Label* fail, + bool negativeZeroCheck = true); + void convertFloat32ToInt32(FloatRegister src, Register dest, Label* fail, + bool negativeZeroCheck = true); + + void convertFloat32ToDouble(FloatRegister src, FloatRegister dest); + void convertInt32ToFloat32(Register src, FloatRegister dest); + void convertInt32ToFloat32(const Address& src, FloatRegister dest); + + void movq(Register rj, Register rd); + + void computeScaledAddress(const BaseIndex& address, Register dest); + + void computeEffectiveAddress(const Address& address, Register dest) { + ma_add_d(dest, address.base, Imm32(address.offset)); + } + + void computeEffectiveAddress(const BaseIndex& address, Register dest) { + computeScaledAddress(address, dest); + if (address.offset) { + ma_add_d(dest, dest, Imm32(address.offset)); + } + } + + void j(Label* dest) { ma_b(dest); } + + void mov(Register src, Register dest) { as_ori(dest, src, 0); } + void mov(ImmWord imm, Register dest) { ma_li(dest, imm); } + void mov(ImmPtr imm, Register dest) { + mov(ImmWord(uintptr_t(imm.value)), dest); + } + void mov(CodeLabel* label, Register dest) { ma_li(dest, label); } + void mov(Register src, Address dest) { MOZ_CRASH("NYI-IC"); } + void mov(Address src, Register dest) { MOZ_CRASH("NYI-IC"); } + + void writeDataRelocation(const Value& val) { + // Raw GC pointer relocations and Value relocations both end up in + // TraceOneDataRelocation. + if (val.isGCThing()) { + gc::Cell* cell = val.toGCThing(); + if (cell && gc::IsInsideNursery(cell)) { + embedsNurseryPointers_ = true; + } + dataRelocations_.writeUnsigned(currentOffset()); + } + } + + void branch(JitCode* c) { + ScratchRegisterScope scratch(asMasm()); + BufferOffset bo = m_buffer.nextOffset(); + addPendingJump(bo, ImmPtr(c->raw()), RelocationKind::JITCODE); + ma_liPatchable(scratch, ImmPtr(c->raw())); + as_jirl(zero, scratch, BOffImm16(0)); + } + void branch(const Register reg) { as_jirl(zero, reg, BOffImm16(0)); } + void nop() { as_nop(); } + void ret() { + ma_pop(ra); + as_jirl(zero, ra, BOffImm16(0)); + } + inline void retn(Imm32 n); + void push(Imm32 imm) { + ScratchRegisterScope scratch(asMasm()); + ma_li(scratch, imm); + ma_push(scratch); + } + void push(ImmWord imm) { + ScratchRegisterScope scratch(asMasm()); + ma_li(scratch, imm); + ma_push(scratch); + } + void push(ImmGCPtr imm) { + ScratchRegisterScope scratch(asMasm()); + ma_li(scratch, imm); + ma_push(scratch); + } + void push(const Address& address) { + SecondScratchRegisterScope scratch2(asMasm()); + loadPtr(address, scratch2); + ma_push(scratch2); + } + void push(Register reg) { ma_push(reg); } + void push(FloatRegister reg) { ma_push(reg); } + void pop(Register reg) { ma_pop(reg); } + void pop(FloatRegister reg) { ma_pop(reg); } + + // Emit a branch that can be toggled to a non-operation. On LOONG64 we use + // "andi" instruction to toggle the branch. + // See ToggleToJmp(), ToggleToCmp(). + CodeOffset toggledJump(Label* label); + + // Emit a "jalr" or "nop" instruction. ToggleCall can be used to patch + // this instruction. + CodeOffset toggledCall(JitCode* target, bool enabled); + + static size_t ToggledCallSize(uint8_t* code) { + // Four instructions used in: MacroAssemblerLOONG64Compat::toggledCall + return 4 * sizeof(uint32_t); + } + + CodeOffset pushWithPatch(ImmWord imm) { + ScratchRegisterScope scratch(asMasm()); + CodeOffset offset = movWithPatch(imm, scratch); + ma_push(scratch); + return offset; + } + + CodeOffset movWithPatch(ImmWord imm, Register dest) { + CodeOffset offset = CodeOffset(currentOffset()); + ma_liPatchable(dest, imm, Li64); + return offset; + } + CodeOffset movWithPatch(ImmPtr imm, Register dest) { + CodeOffset offset = CodeOffset(currentOffset()); + ma_liPatchable(dest, imm); + return offset; + } + + void writeCodePointer(CodeLabel* label) { + label->patchAt()->bind(currentOffset()); + label->setLinkMode(CodeLabel::RawPointer); + m_buffer.ensureSpace(sizeof(void*)); + writeInst(-1); + writeInst(-1); + } + + void jump(Label* label) { ma_b(label); } + void jump(Register reg) { as_jirl(zero, reg, BOffImm16(0)); } + void jump(const Address& address) { + ScratchRegisterScope scratch(asMasm()); + loadPtr(address, scratch); + as_jirl(zero, scratch, BOffImm16(0)); + } + + void jump(JitCode* code) { branch(code); } + + void jump(ImmPtr ptr) { + BufferOffset bo = m_buffer.nextOffset(); + addPendingJump(bo, ptr, RelocationKind::HARDCODED); + ma_jump(ptr); + } + + void jump(TrampolinePtr code) { jump(ImmPtr(code.value)); } + + void splitTag(Register src, Register dest) { + as_srli_d(dest, src, JSVAL_TAG_SHIFT); + } + + void splitTag(const ValueOperand& operand, Register dest) { + splitTag(operand.valueReg(), dest); + } + + void splitTagForTest(const ValueOperand& value, ScratchTagScope& tag) { + splitTag(value, tag); + } + + // unboxing code + void unboxNonDouble(const ValueOperand& operand, Register dest, + JSValueType type) { + unboxNonDouble(operand.valueReg(), dest, type); + } + + template <typename T> + void unboxNonDouble(T src, Register dest, JSValueType type) { + MOZ_ASSERT(type != JSVAL_TYPE_DOUBLE); + if (type == JSVAL_TYPE_INT32 || type == JSVAL_TYPE_BOOLEAN) { + load32(src, dest); + return; + } + loadPtr(src, dest); + unboxNonDouble(dest, dest, type); + } + + void unboxNonDouble(Register src, Register dest, JSValueType type) { + MOZ_ASSERT(type != JSVAL_TYPE_DOUBLE); + if (type == JSVAL_TYPE_INT32 || type == JSVAL_TYPE_BOOLEAN) { + as_slli_w(dest, src, 0); + return; + } + ScratchRegisterScope scratch(asMasm()); + MOZ_ASSERT(scratch != src); + mov(ImmWord(JSVAL_TYPE_TO_SHIFTED_TAG(type)), scratch); + as_xor(dest, src, scratch); + } + + template <typename T> + void unboxObjectOrNull(const T& src, Register dest) { + unboxNonDouble(src, dest, JSVAL_TYPE_OBJECT); + static_assert(JS::detail::ValueObjectOrNullBit == + (uint64_t(0x8) << JSVAL_TAG_SHIFT)); + as_bstrins_d(dest, zero, JSVAL_TAG_SHIFT + 3, JSVAL_TAG_SHIFT + 3); + } + + void unboxGCThingForGCBarrier(const Address& src, Register dest) { + loadPtr(src, dest); + as_bstrpick_d(dest, dest, JSVAL_TAG_SHIFT - 1, 0); + } + void unboxGCThingForGCBarrier(const ValueOperand& src, Register dest) { + as_bstrpick_d(dest, src.valueReg(), JSVAL_TAG_SHIFT - 1, 0); + } + + // Like unboxGCThingForGCBarrier, but loads the GC thing's chunk base. + void getGCThingValueChunk(const Address& src, Register dest) { + ScratchRegisterScope scratch(asMasm()); + MOZ_ASSERT(scratch != dest); + loadPtr(src, dest); + movePtr(ImmWord(JS::detail::ValueGCThingPayloadChunkMask), scratch); + as_and(dest, dest, scratch); + } + void getGCThingValueChunk(const ValueOperand& src, Register dest) { + MOZ_ASSERT(src.valueReg() != dest); + movePtr(ImmWord(JS::detail::ValueGCThingPayloadChunkMask), dest); + as_and(dest, dest, src.valueReg()); + } + + void unboxInt32(const ValueOperand& operand, Register dest); + void unboxInt32(Register src, Register dest); + void unboxInt32(const Address& src, Register dest); + void unboxInt32(const BaseIndex& src, Register dest); + void unboxBoolean(const ValueOperand& operand, Register dest); + void unboxBoolean(Register src, Register dest); + void unboxBoolean(const Address& src, Register dest); + void unboxBoolean(const BaseIndex& src, Register dest); + void unboxDouble(const ValueOperand& operand, FloatRegister dest); + void unboxDouble(Register src, Register dest); + void unboxDouble(const Address& src, FloatRegister dest); + void unboxDouble(const BaseIndex& src, FloatRegister dest); + void unboxString(const ValueOperand& operand, Register dest); + void unboxString(Register src, Register dest); + void unboxString(const Address& src, Register dest); + void unboxSymbol(const ValueOperand& src, Register dest); + void unboxSymbol(Register src, Register dest); + void unboxSymbol(const Address& src, Register dest); + void unboxBigInt(const ValueOperand& operand, Register dest); + void unboxBigInt(Register src, Register dest); + void unboxBigInt(const Address& src, Register dest); + void unboxObject(const ValueOperand& src, Register dest); + void unboxObject(Register src, Register dest); + void unboxObject(const Address& src, Register dest); + void unboxObject(const BaseIndex& src, Register dest) { + unboxNonDouble(src, dest, JSVAL_TYPE_OBJECT); + } + void unboxValue(const ValueOperand& src, AnyRegister dest, JSValueType type); + + void notBoolean(const ValueOperand& val) { + as_xori(val.valueReg(), val.valueReg(), 1); + } + + // boxing code + void boxDouble(FloatRegister src, const ValueOperand& dest, FloatRegister); + void boxNonDouble(JSValueType type, Register src, const ValueOperand& dest); + + // Extended unboxing API. If the payload is already in a register, returns + // that register. Otherwise, provides a move to the given scratch register, + // and returns that. + [[nodiscard]] Register extractObject(const Address& address, + Register scratch); + [[nodiscard]] Register extractObject(const ValueOperand& value, + Register scratch) { + unboxObject(value, scratch); + return scratch; + } + [[nodiscard]] Register extractString(const ValueOperand& value, + Register scratch) { + unboxString(value, scratch); + return scratch; + } + [[nodiscard]] Register extractSymbol(const ValueOperand& value, + Register scratch) { + unboxSymbol(value, scratch); + return scratch; + } + [[nodiscard]] Register extractInt32(const ValueOperand& value, + Register scratch) { + unboxInt32(value, scratch); + return scratch; + } + [[nodiscard]] Register extractBoolean(const ValueOperand& value, + Register scratch) { + unboxBoolean(value, scratch); + return scratch; + } + [[nodiscard]] Register extractTag(const Address& address, Register scratch); + [[nodiscard]] Register extractTag(const BaseIndex& address, Register scratch); + [[nodiscard]] Register extractTag(const ValueOperand& value, + Register scratch) { + splitTag(value, scratch); + return scratch; + } + + inline void ensureDouble(const ValueOperand& source, FloatRegister dest, + Label* failure); + + void boolValueToDouble(const ValueOperand& operand, FloatRegister dest); + void int32ValueToDouble(const ValueOperand& operand, FloatRegister dest); + void loadInt32OrDouble(const Address& src, FloatRegister dest); + void loadInt32OrDouble(const BaseIndex& addr, FloatRegister dest); + void loadConstantDouble(double dp, FloatRegister dest); + + void boolValueToFloat32(const ValueOperand& operand, FloatRegister dest); + void int32ValueToFloat32(const ValueOperand& operand, FloatRegister dest); + void loadConstantFloat32(float f, FloatRegister dest); + + void testNullSet(Condition cond, const ValueOperand& value, Register dest); + + void testObjectSet(Condition cond, const ValueOperand& value, Register dest); + + void testUndefinedSet(Condition cond, const ValueOperand& value, + Register dest); + + template <typename T> + void loadUnboxedValue(const T& address, MIRType type, AnyRegister dest) { + if (dest.isFloat()) { + loadInt32OrDouble(address, dest.fpu()); + } else { + unboxNonDouble(address, dest.gpr(), ValueTypeFromMIRType(type)); + } + } + + void storeUnboxedPayload(ValueOperand value, BaseIndex address, size_t nbytes, + JSValueType type) { + switch (nbytes) { + case 8: { + ScratchRegisterScope scratch(asMasm()); + SecondScratchRegisterScope scratch2(asMasm()); + if (type == JSVAL_TYPE_OBJECT) { + unboxObjectOrNull(value, scratch2); + } else { + unboxNonDouble(value, scratch2, type); + } + computeEffectiveAddress(address, scratch); + as_st_d(scratch2, scratch, 0); + return; + } + case 4: + store32(value.valueReg(), address); + return; + case 1: + store8(value.valueReg(), address); + return; + default: + MOZ_CRASH("Bad payload width"); + } + } + + void storeUnboxedPayload(ValueOperand value, Address address, size_t nbytes, + JSValueType type) { + switch (nbytes) { + case 8: { + SecondScratchRegisterScope scratch2(asMasm()); + if (type == JSVAL_TYPE_OBJECT) { + unboxObjectOrNull(value, scratch2); + } else { + unboxNonDouble(value, scratch2, type); + } + storePtr(scratch2, address); + return; + } + case 4: + store32(value.valueReg(), address); + return; + case 1: + store8(value.valueReg(), address); + return; + default: + MOZ_CRASH("Bad payload width"); + } + } + + void boxValue(JSValueType type, Register src, Register dest) { + ScratchRegisterScope scratch(asMasm()); + if (src == dest) { + as_ori(scratch, src, 0); + src = scratch; + } +#ifdef DEBUG + if (type == JSVAL_TYPE_INT32 || type == JSVAL_TYPE_BOOLEAN) { + Label upper32BitsSignExtended; + as_slli_w(dest, src, 0); + ma_b(src, dest, &upper32BitsSignExtended, Equal, ShortJump); + breakpoint(); + bind(&upper32BitsSignExtended); + } +#endif + ma_li(dest, ImmWord(JSVAL_TYPE_TO_SHIFTED_TAG(type))); + if (type == JSVAL_TYPE_INT32 || type == JSVAL_TYPE_BOOLEAN) { + as_bstrins_d(dest, src, 31, 0); + } else { + as_bstrins_d(dest, src, JSVAL_TAG_SHIFT - 1, 0); + } + } + + void storeValue(ValueOperand val, const Address& dest); + void storeValue(ValueOperand val, const BaseIndex& dest); + void storeValue(JSValueType type, Register reg, Address dest); + void storeValue(JSValueType type, Register reg, BaseIndex dest); + void storeValue(const Value& val, Address dest); + void storeValue(const Value& val, BaseIndex dest); + void storeValue(const Address& src, const Address& dest, Register temp) { + loadPtr(src, temp); + storePtr(temp, dest); + } + + void storePrivateValue(Register src, const Address& dest) { + storePtr(src, dest); + } + void storePrivateValue(ImmGCPtr imm, const Address& dest) { + storePtr(imm, dest); + } + + void loadValue(Address src, ValueOperand val); + void loadValue(const BaseIndex& src, ValueOperand val); + + void loadUnalignedValue(const Address& src, ValueOperand dest) { + loadValue(src, dest); + } + + void tagValue(JSValueType type, Register payload, ValueOperand dest); + + void pushValue(ValueOperand val); + void popValue(ValueOperand val); + void pushValue(const Value& val) { + if (val.isGCThing()) { + ScratchRegisterScope scratch(asMasm()); + writeDataRelocation(val); + movWithPatch(ImmWord(val.asRawBits()), scratch); + push(scratch); + } else { + push(ImmWord(val.asRawBits())); + } + } + void pushValue(JSValueType type, Register reg) { + SecondScratchRegisterScope scratch2(asMasm()); + boxValue(type, reg, scratch2); + push(scratch2); + } + void pushValue(const Address& addr); + void pushValue(const BaseIndex& addr, Register scratch) { + loadValue(addr, ValueOperand(scratch)); + pushValue(ValueOperand(scratch)); + } + + void handleFailureWithHandlerTail(Label* profilerExitTail, + Label* bailoutTail); + + ///////////////////////////////////////////////////////////////// + // Common interface. + ///////////////////////////////////////////////////////////////// + public: + // The following functions are exposed for use in platform-shared code. + + inline void incrementInt32Value(const Address& addr); + + void move32(Imm32 imm, Register dest); + void move32(Register src, Register dest); + + void movePtr(Register src, Register dest); + void movePtr(ImmWord imm, Register dest); + void movePtr(ImmPtr imm, Register dest); + void movePtr(wasm::SymbolicAddress imm, Register dest); + void movePtr(ImmGCPtr imm, Register dest); + + void load8SignExtend(const Address& address, Register dest); + void load8SignExtend(const BaseIndex& src, Register dest); + + void load8ZeroExtend(const Address& address, Register dest); + void load8ZeroExtend(const BaseIndex& src, Register dest); + + void load16SignExtend(const Address& address, Register dest); + void load16SignExtend(const BaseIndex& src, Register dest); + + template <typename S> + void load16UnalignedSignExtend(const S& src, Register dest) { + load16SignExtend(src, dest); + } + + void load16ZeroExtend(const Address& address, Register dest); + void load16ZeroExtend(const BaseIndex& src, Register dest); + + template <typename S> + void load16UnalignedZeroExtend(const S& src, Register dest) { + load16ZeroExtend(src, dest); + } + + void load32(const Address& address, Register dest); + void load32(const BaseIndex& address, Register dest); + void load32(AbsoluteAddress address, Register dest); + void load32(wasm::SymbolicAddress address, Register dest); + + template <typename S> + void load32Unaligned(const S& src, Register dest) { + load32(src, dest); + } + + void load64(const Address& address, Register64 dest) { + loadPtr(address, dest.reg); + } + void load64(const BaseIndex& address, Register64 dest) { + loadPtr(address, dest.reg); + } + + template <typename S> + void load64Unaligned(const S& src, Register64 dest) { + load64(src, dest); + } + + void loadPtr(const Address& address, Register dest); + void loadPtr(const BaseIndex& src, Register dest); + void loadPtr(AbsoluteAddress address, Register dest); + void loadPtr(wasm::SymbolicAddress address, Register dest); + + void loadPrivate(const Address& address, Register dest); + + void store8(Register src, const Address& address); + void store8(Imm32 imm, const Address& address); + void store8(Register src, const BaseIndex& address); + void store8(Imm32 imm, const BaseIndex& address); + + void store16(Register src, const Address& address); + void store16(Imm32 imm, const Address& address); + void store16(Register src, const BaseIndex& address); + void store16(Imm32 imm, const BaseIndex& address); + + template <typename T> + void store16Unaligned(Register src, const T& dest) { + store16(src, dest); + } + + void store32(Register src, AbsoluteAddress address); + void store32(Register src, const Address& address); + void store32(Register src, const BaseIndex& address); + void store32(Imm32 src, const Address& address); + void store32(Imm32 src, const BaseIndex& address); + + template <typename T> + void store32Unaligned(Register src, const T& dest) { + store32(src, dest); + } + + void store64(Imm64 imm, Address address) { + storePtr(ImmWord(imm.value), address); + } + void store64(Imm64 imm, const BaseIndex& address) { + storePtr(ImmWord(imm.value), address); + } + + void store64(Register64 src, Address address) { storePtr(src.reg, address); } + void store64(Register64 src, const BaseIndex& address) { + storePtr(src.reg, address); + } + + template <typename T> + void store64Unaligned(Register64 src, const T& dest) { + store64(src, dest); + } + + template <typename T> + void storePtr(ImmWord imm, T address); + template <typename T> + void storePtr(ImmPtr imm, T address); + template <typename T> + void storePtr(ImmGCPtr imm, T address); + void storePtr(Register src, const Address& address); + void storePtr(Register src, const BaseIndex& address); + void storePtr(Register src, AbsoluteAddress dest); + + void moveDouble(FloatRegister src, FloatRegister dest) { + as_fmov_d(dest, src); + } + + void zeroDouble(FloatRegister reg) { moveToDouble(zero, reg); } + + void convertUInt64ToDouble(Register src, FloatRegister dest); + + void breakpoint(uint32_t value = 0); + + void checkStackAlignment() { +#ifdef DEBUG + Label aligned; + ScratchRegisterScope scratch(asMasm()); + as_andi(scratch, sp, ABIStackAlignment - 1); + ma_b(scratch, zero, &aligned, Equal, ShortJump); + breakpoint(); + bind(&aligned); +#endif + }; + + static void calculateAlignedStackPointer(void** stackPointer); + + void cmpPtrSet(Assembler::Condition cond, Address lhs, ImmPtr rhs, + Register dest); + void cmpPtrSet(Assembler::Condition cond, Register lhs, Address rhs, + Register dest); + void cmpPtrSet(Assembler::Condition cond, Address lhs, Register rhs, + Register dest); + + void cmp32Set(Assembler::Condition cond, Register lhs, Address rhs, + Register dest); + + protected: + bool buildOOLFakeExitFrame(void* fakeReturnAddr); + + void wasmLoadI64Impl(const wasm::MemoryAccessDesc& access, + Register memoryBase, Register ptr, Register ptrScratch, + Register64 output, Register tmp); + void wasmStoreI64Impl(const wasm::MemoryAccessDesc& access, Register64 value, + Register memoryBase, Register ptr, Register ptrScratch, + Register tmp); + + public: + void lea(Operand addr, Register dest) { + ma_add_d(dest, addr.baseReg(), Imm32(addr.disp())); + } + + void abiret() { as_jirl(zero, ra, BOffImm16(0)); } + + void moveFloat32(FloatRegister src, FloatRegister dest) { + as_fmov_s(dest, src); + } + + // Instrumentation for entering and leaving the profiler. + void profilerEnterFrame(Register framePtr, Register scratch); + void profilerExitFrame(); +}; + +typedef MacroAssemblerLOONG64Compat MacroAssemblerSpecific; + +} // namespace jit +} // namespace js + +#endif /* jit_loong64_MacroAssembler_loong64_h */ |