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Diffstat (limited to 'js/src/jit/arm/CodeGenerator-arm.h')
| -rw-r--r-- | js/src/jit/arm/CodeGenerator-arm.h | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/js/src/jit/arm/CodeGenerator-arm.h b/js/src/jit/arm/CodeGenerator-arm.h new file mode 100644 index 0000000000..f7cf2b263e --- /dev/null +++ b/js/src/jit/arm/CodeGenerator-arm.h @@ -0,0 +1,172 @@ +/* -*- 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_arm_CodeGenerator_arm_h +#define jit_arm_CodeGenerator_arm_h + +#include "jit/arm/Assembler-arm.h" +#include "jit/shared/CodeGenerator-shared.h" +#include "js/ScalarType.h" // js::Scalar::Type + +namespace js { +namespace jit { + +class CodeGeneratorARM; +class OutOfLineBailout; +class OutOfLineTableSwitch; + +using OutOfLineWasmTruncateCheck = + OutOfLineWasmTruncateCheckBase<CodeGeneratorARM>; + +class CodeGeneratorARM : public CodeGeneratorShared { + friend class MoveResolverARM; + + protected: + CodeGeneratorARM(MIRGenerator* gen, LIRGraph* graph, MacroAssembler* masm); + + NonAssertingLabel deoptLabel_; + + MoveOperand toMoveOperand(LAllocation a) const; + + void bailoutIf(Assembler::Condition condition, LSnapshot* snapshot); + void bailoutFrom(Label* label, LSnapshot* snapshot); + void bailout(LSnapshot* snapshot); + + template <typename T1, typename T2> + void bailoutCmpPtr(Assembler::Condition c, T1 lhs, T2 rhs, + LSnapshot* snapshot) { + masm.cmpPtr(lhs, rhs); + bailoutIf(c, snapshot); + } + void bailoutTestPtr(Assembler::Condition c, Register lhs, Register rhs, + LSnapshot* snapshot) { + masm.testPtr(lhs, rhs); + bailoutIf(c, snapshot); + } + template <typename T1, typename T2> + void bailoutCmp32(Assembler::Condition c, T1 lhs, T2 rhs, + LSnapshot* snapshot) { + masm.cmp32(lhs, rhs); + bailoutIf(c, snapshot); + } + template <typename T1, typename T2> + void bailoutTest32(Assembler::Condition c, T1 lhs, T2 rhs, + LSnapshot* snapshot) { + masm.test32(lhs, rhs); + bailoutIf(c, snapshot); + } + void bailoutIfFalseBool(Register reg, LSnapshot* snapshot) { + masm.test32(reg, Imm32(0xFF)); + bailoutIf(Assembler::Zero, snapshot); + } + + template <class T> + void generateUDivModZeroCheck(Register rhs, Register output, Label* done, + LSnapshot* snapshot, T* mir); + + bool generateOutOfLineCode(); + + // Emits a branch that directs control flow to the true block if |cond| is + // true, and the false block if |cond| is false. + void emitBranch(Assembler::Condition cond, MBasicBlock* ifTrue, + MBasicBlock* ifFalse); + + void testNullEmitBranch(Assembler::Condition cond, const ValueOperand& value, + MBasicBlock* ifTrue, MBasicBlock* ifFalse) { + cond = masm.testNull(cond, value); + emitBranch(cond, ifTrue, ifFalse); + } + void testUndefinedEmitBranch(Assembler::Condition cond, + const ValueOperand& value, MBasicBlock* ifTrue, + MBasicBlock* ifFalse) { + cond = masm.testUndefined(cond, value); + emitBranch(cond, ifTrue, ifFalse); + } + void testObjectEmitBranch(Assembler::Condition cond, + const ValueOperand& value, MBasicBlock* ifTrue, + MBasicBlock* ifFalse) { + cond = masm.testObject(cond, value); + emitBranch(cond, ifTrue, ifFalse); + } + void testZeroEmitBranch(Assembler::Condition cond, Register reg, + MBasicBlock* ifTrue, MBasicBlock* ifFalse) { + MOZ_ASSERT(cond == Assembler::Equal || cond == Assembler::NotEqual); + masm.cmpPtr(reg, ImmWord(0)); + emitBranch(cond, ifTrue, ifFalse); + } + + void emitTableSwitchDispatch(MTableSwitch* mir, Register index, + Register base); + + void emitBigIntDiv(LBigIntDiv* ins, Register dividend, Register divisor, + Register output, Label* fail); + void emitBigIntMod(LBigIntMod* ins, Register dividend, Register divisor, + Register output, Label* fail); + + template <typename T> + void emitWasmLoad(T* ins); + template <typename T> + void emitWasmUnalignedLoad(T* ins); + template <typename T> + void emitWasmStore(T* ins); + template <typename T> + void emitWasmUnalignedStore(T* ins); + + ValueOperand ToValue(LInstruction* ins, size_t pos); + ValueOperand ToTempValue(LInstruction* ins, size_t pos); + + Register64 ToOperandOrRegister64(const LInt64Allocation input); + + // Functions for LTestVAndBranch. + void splitTagForTest(const ValueOperand& value, ScratchTagScope& tag); + + void divICommon(MDiv* mir, Register lhs, Register rhs, Register output, + LSnapshot* snapshot, Label& done); + void modICommon(MMod* mir, Register lhs, Register rhs, Register output, + LSnapshot* snapshot, Label& done); + + void generateInvalidateEpilogue(); + + // Generating a result. + template <typename S, typename T> + void atomicBinopToTypedIntArray(AtomicOp op, Scalar::Type arrayType, + const S& value, const T& mem, + Register flagTemp, Register outTemp, + AnyRegister output); + + // Generating no result. + template <typename S, typename T> + void atomicBinopToTypedIntArray(AtomicOp op, Scalar::Type arrayType, + const S& value, const T& mem, + Register flagTemp); + + public: + void visitOutOfLineBailout(OutOfLineBailout* ool); + void visitOutOfLineTableSwitch(OutOfLineTableSwitch* ool); + void visitOutOfLineWasmTruncateCheck(OutOfLineWasmTruncateCheck* ool); +}; + +typedef CodeGeneratorARM CodeGeneratorSpecific; + +// An out-of-line bailout thunk. +class OutOfLineBailout : public OutOfLineCodeBase<CodeGeneratorARM> { + protected: // Silence Clang warning. + LSnapshot* snapshot_; + uint32_t frameSize_; + + public: + OutOfLineBailout(LSnapshot* snapshot, uint32_t frameSize) + : snapshot_(snapshot), frameSize_(frameSize) {} + + void accept(CodeGeneratorARM* codegen) override; + + LSnapshot* snapshot() const { return snapshot_; } +}; + +} // namespace jit +} // namespace js + +#endif /* jit_arm_CodeGenerator_arm_h */ |