js/src/jit/BaselineCacheIRCompiler.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: set ts=8 sts=2 et sw=2 tw=80:
   3  * This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef jit_BaselineCacheIRCompiler_h
   8 #define jit_BaselineCacheIRCompiler_h
   9
  10 #include "mozilla/Maybe.h"
  11
  12 #include "gc/Barrier.h"
  13 #include "jit/CacheIR.h"
  14 #include "jit/CacheIRCompiler.h"
  15
  16 namespace js {
  17 namespace jit {
  18
  19 class ICFallbackStub;
  20 class ICStub;
  21
  22 enum class BaselineCacheIRStubKind { Regular, Monitored, Updated };
  23
  24 ICStub* AttachBaselineCacheIRStub(JSContext* cx, const CacheIRWriter& writer,
  25                                   CacheKind kind,
  26                                   BaselineCacheIRStubKind stubKind,
  27                                   JSScript* outerScript, ICScript* icScript,
  28                                   ICFallbackStub* stub, bool* attached);
  29
  30 // BaselineCacheIRCompiler compiles CacheIR to BaselineIC native code.
  31 class MOZ_RAII BaselineCacheIRCompiler : public CacheIRCompiler {
  32   bool makesGCCalls_;
  33   BaselineCacheIRStubKind kind_;
  34
  35   void tailCallVMInternal(MacroAssembler& masm, TailCallVMFunctionId id);
  36
  37   template <typename Fn, Fn fn>
  38   void tailCallVM(MacroAssembler& masm);
  39
  40   MOZ_MUST_USE bool callTypeUpdateIC(Register obj, ValueOperand val,
  41                                      Register scratch,
  42                                      LiveGeneralRegisterSet saveRegs);
  43
  44   MOZ_MUST_USE bool emitStoreSlotShared(bool isFixed, ObjOperandId objId,
  45                                         uint32_t offsetOffset,
  46                                         ValOperandId rhsId);
  47   MOZ_MUST_USE bool emitAddAndStoreSlotShared(
  48       CacheOp op, ObjOperandId objId, uint32_t offsetOffset, ValOperandId rhsId,
  49       bool changeGroup, uint32_t newGroupOffset, uint32_t newShapeOffset,
  50       mozilla::Maybe<uint32_t> numNewSlotsOffset);
  51
  52   bool updateArgc(CallFlags flags, Register argcReg, Register scratch);
  53   void loadStackObject(ArgumentKind kind, CallFlags flags, size_t stackPushed,
  54                        Register argcReg, Register dest);
  55   void pushArguments(Register argcReg, Register calleeReg, Register scratch,
  56                      Register scratch2, CallFlags flags, bool isJitCall);
  57   void pushStandardArguments(Register argcReg, Register scratch,
  58                              Register scratch2, bool isJitCall,
  59                              bool isConstructing);
  60   void pushArrayArguments(Register argcReg, Register scratch, Register scratch2,
  61                           bool isJitCall, bool isConstructing);
  62   void pushFunCallArguments(Register argcReg, Register calleeReg,
  63                             Register scratch, Register scratch2,
  64                             bool isJitCall);
  65   void pushFunApplyArgs(Register argcReg, Register calleeReg, Register scratch,
  66                         Register scratch2, bool isJitCall);
  67   void createThis(Register argcReg, Register calleeReg, Register scratch,
  68                   CallFlags flags);
  69   void updateReturnValue();
  70
  71   enum class NativeCallType { Native, ClassHook };
  72   bool emitCallNativeShared(NativeCallType callType, ObjOperandId calleeId,
  73                             Int32OperandId argcId, CallFlags flags,
  74                             mozilla::Maybe<bool> ignoresReturnValue,
  75                             mozilla::Maybe<uint32_t> targetOffset);
  76
  77   enum class StringCode { CodeUnit, CodePoint };
  78   bool emitStringFromCodeResult(Int32OperandId codeId, StringCode stringCode);
  79
  80  public:
  81   friend class AutoStubFrame;
  82
  83   BaselineCacheIRCompiler(JSContext* cx, const CacheIRWriter& writer,
  84                           uint32_t stubDataOffset,
  85                           BaselineCacheIRStubKind stubKind);
  86
  87   MOZ_MUST_USE bool init(CacheKind kind);
  88
  89   template <typename Fn, Fn fn>
  90   void callVM(MacroAssembler& masm);
  91
  92   JitCode* compile();
  93
  94   bool makesGCCalls() const;
  95
  96   Address stubAddress(uint32_t offset) const;
  97
  98  private:
  99   CACHE_IR_COMPILER_UNSHARED_GENERATED
 100 };
 101
 102 }  // namespace jit
 103 }  // namespace js
 104
 105 #endif /* jit_BaselineCacheIRCompiler_h */