dfg/DFGOperations.h

   1 /*
   2  * Copyright (C) 2011 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 DFGOperations_h
  27 #define DFGOperations_h
  28
  29 #if ENABLE(DFG_JIT)
  30
  31 #include <dfg/DFGJITCompiler.h>
  32
  33 namespace JSC {
  34
  35 class Identifier;
  36
  37 namespace DFG {
  38
  39 // These typedefs provide typechecking when generating calls out to helper routines;
  40 // this helps prevent calling a helper routine with the wrong arguments!
  41 typedef EncodedJSValue (*J_DFGOperation_EJJ)(ExecState*, EncodedJSValue, EncodedJSValue);
  42 typedef EncodedJSValue (*J_DFGOperation_EJ)(ExecState*, EncodedJSValue);
  43 typedef EncodedJSValue (*J_DFGOperation_EJP)(ExecState*, EncodedJSValue, void*);
  44 typedef EncodedJSValue (*J_DFGOperation_EJI)(ExecState*, EncodedJSValue, Identifier*);
  45 typedef bool (*Z_DFGOperation_EJ)(ExecState*, EncodedJSValue);
  46 typedef bool (*Z_DFGOperation_EJJ)(ExecState*, EncodedJSValue, EncodedJSValue);
  47 typedef void (*V_DFGOperation_EJJJ)(ExecState*, EncodedJSValue, EncodedJSValue, EncodedJSValue);
  48 typedef void (*V_DFGOperation_EJJP)(ExecState*, EncodedJSValue, EncodedJSValue, void*);
  49 typedef void (*V_DFGOperation_EJJI)(ExecState*, EncodedJSValue, EncodedJSValue, Identifier*);
  50 typedef double (*D_DFGOperation_DD)(double, double);
  51
  52 // These routines are provide callbacks out to C++ implementations of operations too complex to JIT.
  53 EncodedJSValue operationConvertThis(ExecState*, EncodedJSValue encodedOp1);
  54 EncodedJSValue operationValueAdd(ExecState*, EncodedJSValue encodedOp1, EncodedJSValue encodedOp2);
  55 EncodedJSValue operationGetByVal(ExecState*, EncodedJSValue encodedBase, EncodedJSValue encodedProperty);
  56 EncodedJSValue operationGetById(ExecState*, EncodedJSValue encodedBase, Identifier*);
  57 void operationPutByValStrict(ExecState*, EncodedJSValue encodedBase, EncodedJSValue encodedProperty, EncodedJSValue encodedValue);
  58 void operationPutByValNonStrict(ExecState*, EncodedJSValue encodedBase, EncodedJSValue encodedProperty, EncodedJSValue encodedValue);
  59 void operationPutByIdStrict(ExecState*, EncodedJSValue encodedValue, EncodedJSValue encodedBase, Identifier*);
  60 void operationPutByIdNonStrict(ExecState*, EncodedJSValue encodedValue, EncodedJSValue encodedBase, Identifier*);
  61 void operationPutByIdDirectStrict(ExecState*, EncodedJSValue encodedValue, EncodedJSValue encodedBase, Identifier*);
  62 void operationPutByIdDirectNonStrict(ExecState*, EncodedJSValue encodedValue, EncodedJSValue encodedBase, Identifier*);
  63 bool operationCompareLess(ExecState*, EncodedJSValue encodedOp1, EncodedJSValue encodedOp2);
  64 bool operationCompareLessEq(ExecState*, EncodedJSValue encodedOp1, EncodedJSValue encodedOp2);
  65 bool operationCompareEq(ExecState*, EncodedJSValue encodedOp1, EncodedJSValue encodedOp2);
  66 bool operationCompareStrictEq(ExecState*, EncodedJSValue encodedOp1, EncodedJSValue encodedOp2);
  67
  68 // This method is used to lookup an exception hander, keyed by faultLocation, which is
  69 // the return location from one of the calls out to one of the helper operations above.
  70 struct DFGHandler {
  71     DFGHandler(ExecState* exec, void* handler)
  72         : exec(exec)
  73         , handler(handler)
  74     {
  75     }
  76
  77     ExecState* exec;
  78     void* handler;
  79 };
  80 DFGHandler lookupExceptionHandler(ExecState*, ReturnAddressPtr faultLocation);
  81
  82 // These operations implement the implicitly called ToInt32, ToNumber, and ToBoolean conversions from ES5.
  83 double dfgConvertJSValueToNumber(ExecState*, EncodedJSValue);
  84 int32_t dfgConvertJSValueToInt32(ExecState*, EncodedJSValue);
  85 bool dfgConvertJSValueToBoolean(ExecState*, EncodedJSValue);
  86
  87 } } // namespace JSC::DFG
  88
  89 #endif
  90 #endif