src/v8/src/arguments.cc

   1 // Copyright 2013 the V8 project authors. All rights reserved.
   2 // Redistribution and use in source and binary forms, with or without
   3 // modification, are permitted provided that the following conditions are
   4 // met:
   5 //
   6 //     * Redistributions of source code must retain the above copyright
   7 //       notice, this list of conditions and the following disclaimer.
   8 //     * Redistributions in binary form must reproduce the above
   9 //       copyright notice, this list of conditions and the following
  10 //       disclaimer in the documentation and/or other materials provided
  11 //       with the distribution.
  12 //     * Neither the name of Google Inc. nor the names of its
  13 //       contributors may be used to endorse or promote products derived
  14 //       from this software without specific prior written permission.
  15 //
  16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27
  28 #include "v8.h"
  29 #include "arguments.h"
  30
  31 #include "vm-state-inl.h"
  32
  33 namespace v8 {
  34 namespace internal {
  35
  36
  37 template<typename T>
  38 template<typename V>
  39 v8::Handle<V> CustomArguments<T>::GetReturnValue(Isolate* isolate) {
  40   // Check the ReturnValue.
  41   Object** handle = &this->begin()[kReturnValueOffset];
  42   // Nothing was set, return empty handle as per previous behaviour.
  43   if ((*handle)->IsTheHole()) return v8::Handle<V>();
  44   return Utils::Convert<Object, V>(Handle<Object>(handle));
  45 }
  46
  47
  48 v8::Handle<v8::Value> FunctionCallbackArguments::Call(FunctionCallback f) {
  49   Isolate* isolate = this->isolate();
  50   VMState<EXTERNAL> state(isolate);
  51   ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f));
  52   FunctionCallbackInfo<v8::Value> info(begin(),
  53                                        argv_,
  54                                        argc_,
  55                                        is_construct_call_);
  56   f(info);
  57   return GetReturnValue<v8::Value>(isolate);
  58 }
  59
  60
  61 #define WRITE_CALL_0(Function, ReturnValue)                                    \
  62 v8::Handle<ReturnValue> PropertyCallbackArguments::Call(Function f) {          \
  63   Isolate* isolate = this->isolate();                                          \
  64   VMState<EXTERNAL> state(isolate);                                            \
  65   ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f));                 \
  66   PropertyCallbackInfo<ReturnValue> info(begin());                             \
  67   f(info);                                                                     \
  68   return GetReturnValue<ReturnValue>(isolate);                                 \
  69 }
  70
  71
  72 #define WRITE_CALL_1(Function, ReturnValue, Arg1)                              \
  73 v8::Handle<ReturnValue> PropertyCallbackArguments::Call(Function f,            \
  74                                                         Arg1 arg1) {           \
  75   Isolate* isolate = this->isolate();                                          \
  76   VMState<EXTERNAL> state(isolate);                                            \
  77   ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f));                 \
  78   PropertyCallbackInfo<ReturnValue> info(begin());                             \
  79   f(arg1, info);                                                               \
  80   return GetReturnValue<ReturnValue>(isolate);                                 \
  81 }
  82
  83
  84 #define WRITE_CALL_2(Function, ReturnValue, Arg1, Arg2)                        \
  85 v8::Handle<ReturnValue> PropertyCallbackArguments::Call(Function f,            \
  86                                                         Arg1 arg1,             \
  87                                                         Arg2 arg2) {           \
  88   Isolate* isolate = this->isolate();                                          \
  89   VMState<EXTERNAL> state(isolate);                                            \
  90   ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f));                 \
  91   PropertyCallbackInfo<ReturnValue> info(begin());                             \
  92   f(arg1, arg2, info);                                                         \
  93   return GetReturnValue<ReturnValue>(isolate);                                 \
  94 }
  95
  96
  97 #define WRITE_CALL_2_VOID(Function, ReturnValue, Arg1, Arg2)                   \
  98 void PropertyCallbackArguments::Call(Function f,                               \
  99                                      Arg1 arg1,                                \
 100                                      Arg2 arg2) {                              \
 101   Isolate* isolate = this->isolate();                                          \
 102   VMState<EXTERNAL> state(isolate);                                            \
 103   ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f));                 \
 104   PropertyCallbackInfo<ReturnValue> info(begin());                             \
 105   f(arg1, arg2, info);                                                         \
 106 }
 107
 108
 109 FOR_EACH_CALLBACK_TABLE_MAPPING_0(WRITE_CALL_0)
 110 FOR_EACH_CALLBACK_TABLE_MAPPING_1(WRITE_CALL_1)
 111 FOR_EACH_CALLBACK_TABLE_MAPPING_2(WRITE_CALL_2)
 112 FOR_EACH_CALLBACK_TABLE_MAPPING_2_VOID_RETURN(WRITE_CALL_2_VOID)
 113
 114 #undef WRITE_CALL_0
 115 #undef WRITE_CALL_1
 116 #undef WRITE_CALL_2
 117 #undef WRITE_CALL_2_VOID
 118
 119
 120 double ClobberDoubleRegisters(double x1, double x2, double x3, double x4) {
 121   // TODO(ulan): This clobbers only subset of registers depending on compiler,
 122   // Rewrite this in assembly to really clobber all registers.
 123   // GCC for ia32 uses the FPU and does not touch XMM registers.
 124   return x1 * 1.01 + x2 * 2.02 + x3 * 3.03 + x4 * 4.04;
 125 }
 126
 127
 128 } }  // namespace v8::internal