jit/JITInlineCacheGenerator.h

   1 /*
   2  * Copyright (C) 2013 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef JITInlineCacheGenerator_h
  27 #define JITInlineCacheGenerator_h
  28
  29 #if ENABLE(JIT)
  30
  31 #include "CodeOrigin.h"
  32 #include "JITOperations.h"
  33 #include "JSCJSValue.h"
  34 #include "PutKind.h"
  35 #include "RegisterSet.h"
  36
  37 namespace JSC {
  38
  39 class CodeBlock;
  40
  41 class JITInlineCacheGenerator {
  42 protected:
  43     JITInlineCacheGenerator() { }
  44     JITInlineCacheGenerator(CodeBlock*, CodeOrigin);
  45
  46 public:
  47     StructureStubInfo* stubInfo() const { return m_stubInfo; }
  48
  49 protected:
  50     CodeBlock* m_codeBlock;
  51     StructureStubInfo* m_stubInfo;
  52 };
  53
  54 class JITByIdGenerator : public JITInlineCacheGenerator {
  55 protected:
  56     JITByIdGenerator() { }
  57
  58     JITByIdGenerator(
  59         CodeBlock*, CodeOrigin, const RegisterSet&, JSValueRegs base, JSValueRegs value,
  60         SpillRegistersMode spillMode);
  61
  62 public:
  63     void reportSlowPathCall(MacroAssembler::Label slowPathBegin, MacroAssembler::Call call)
  64     {
  65         m_slowPathBegin = slowPathBegin;
  66         m_call = call;
  67     }
  68
  69     MacroAssembler::Label slowPathBegin() const { return m_slowPathBegin; }
  70     MacroAssembler::Jump slowPathJump() const { return m_structureCheck.m_jump; }
  71
  72     void finalize(LinkBuffer& fastPathLinkBuffer, LinkBuffer& slowPathLinkBuffer);
  73     void finalize(LinkBuffer&);
  74
  75 protected:
  76     void generateFastPathChecks(MacroAssembler&, GPRReg butterfly);
  77
  78     JSValueRegs m_base;
  79     JSValueRegs m_value;
  80
  81     MacroAssembler::DataLabel32 m_structureImm;
  82     MacroAssembler::PatchableJump m_structureCheck;
  83     MacroAssembler::ConvertibleLoadLabel m_propertyStorageLoad;
  84     AssemblerLabel m_loadOrStore;
  85 #if USE(JSVALUE32_64)
  86     AssemblerLabel m_tagLoadOrStore;
  87 #endif
  88     MacroAssembler::Label m_done;
  89     MacroAssembler::Label m_slowPathBegin;
  90     MacroAssembler::Call m_call;
  91 };
  92
  93 class JITGetByIdGenerator : public JITByIdGenerator {
  94 public:
  95     JITGetByIdGenerator() { }
  96
  97     JITGetByIdGenerator(
  98         CodeBlock*, CodeOrigin, const RegisterSet& usedRegisters, JSValueRegs base,
  99         JSValueRegs value, SpillRegistersMode spillMode);
 100
 101     void generateFastPath(MacroAssembler&);
 102 };
 103
 104 class JITPutByIdGenerator : public JITByIdGenerator {
 105 public:
 106     JITPutByIdGenerator() { }
 107
 108     JITPutByIdGenerator(
 109         CodeBlock*, CodeOrigin, const RegisterSet& usedRegisters, JSValueRegs base,
 110         JSValueRegs, GPRReg scratch, SpillRegistersMode spillMode, ECMAMode, PutKind);
 111
 112     void generateFastPath(MacroAssembler&);
 113
 114     V_JITOperation_ESsiJJI slowPathFunction();
 115
 116 private:
 117     GPRReg m_scratch;
 118     ECMAMode m_ecmaMode;
 119     PutKind m_putKind;
 120 };
 121
 122 } // namespace JSC
 123
 124 #endif // ENABLE(JIT)
 125
 126 #endif // JITInlineCacheGenerator_h
 127