1 // Copyright 2013 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "src/arguments.h"
6
7 #include "src/api.h"
8 #include "src/vm-state-inl.h"
9
10 namespace v8 {
11 namespace internal {
12
13
14 template <typename T>
15 template <typename V>
GetReturnValue(Isolate * isolate)16 v8::Local<V> CustomArguments<T>::GetReturnValue(Isolate* isolate) {
17 // Check the ReturnValue.
18 Object** handle = &this->begin()[kReturnValueOffset];
19 // Nothing was set, return empty handle as per previous behaviour.
20 if ((*handle)->IsTheHole()) return v8::Local<V>();
21 return Utils::Convert<Object, V>(Handle<Object>(handle));
22 }
23
24
Call(FunctionCallback f)25 v8::Local<v8::Value> FunctionCallbackArguments::Call(FunctionCallback f) {
26 Isolate* isolate = this->isolate();
27 VMState<EXTERNAL> state(isolate);
28 ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f));
29 FunctionCallbackInfo<v8::Value> info(begin(),
30 argv_,
31 argc_,
32 is_construct_call_);
33 f(info);
34 return GetReturnValue<v8::Value>(isolate);
35 }
36
37
38 #define WRITE_CALL_0(Function, ReturnValue) \
39 v8::Local<ReturnValue> PropertyCallbackArguments::Call(Function f) { \
40 Isolate* isolate = this->isolate(); \
41 VMState<EXTERNAL> state(isolate); \
42 ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f)); \
43 PropertyCallbackInfo<ReturnValue> info(begin()); \
44 f(info); \
45 return GetReturnValue<ReturnValue>(isolate); \
46 }
47
48
49 #define WRITE_CALL_1(Function, ReturnValue, Arg1) \
50 v8::Local<ReturnValue> PropertyCallbackArguments::Call(Function f, \
51 Arg1 arg1) { \
52 Isolate* isolate = this->isolate(); \
53 VMState<EXTERNAL> state(isolate); \
54 ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f)); \
55 PropertyCallbackInfo<ReturnValue> info(begin()); \
56 f(arg1, info); \
57 return GetReturnValue<ReturnValue>(isolate); \
58 }
59
60
61 #define WRITE_CALL_2(Function, ReturnValue, Arg1, Arg2) \
62 v8::Local<ReturnValue> PropertyCallbackArguments::Call( \
63 Function f, Arg1 arg1, Arg2 arg2) { \
64 Isolate* isolate = this->isolate(); \
65 VMState<EXTERNAL> state(isolate); \
66 ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f)); \
67 PropertyCallbackInfo<ReturnValue> info(begin()); \
68 f(arg1, arg2, info); \
69 return GetReturnValue<ReturnValue>(isolate); \
70 }
71
72
73 #define WRITE_CALL_2_VOID(Function, ReturnValue, Arg1, Arg2) \
74 void PropertyCallbackArguments::Call(Function f, \
75 Arg1 arg1, \
76 Arg2 arg2) { \
77 Isolate* isolate = this->isolate(); \
78 VMState<EXTERNAL> state(isolate); \
79 ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f)); \
80 PropertyCallbackInfo<ReturnValue> info(begin()); \
81 f(arg1, arg2, info); \
82 }
83
84
85 FOR_EACH_CALLBACK_TABLE_MAPPING_0(WRITE_CALL_0)
FOR_EACH_CALLBACK_TABLE_MAPPING_1(WRITE_CALL_1)86 FOR_EACH_CALLBACK_TABLE_MAPPING_1(WRITE_CALL_1)
87 FOR_EACH_CALLBACK_TABLE_MAPPING_2(WRITE_CALL_2)
88 FOR_EACH_CALLBACK_TABLE_MAPPING_2_VOID_RETURN(WRITE_CALL_2_VOID)
89
90 #undef WRITE_CALL_0
91 #undef WRITE_CALL_1
92 #undef WRITE_CALL_2
93 #undef WRITE_CALL_2_VOID
94
95
96 double ClobberDoubleRegisters(double x1, double x2, double x3, double x4) {
97 // TODO(ulan): This clobbers only subset of registers depending on compiler,
98 // Rewrite this in assembly to really clobber all registers.
99 // GCC for ia32 uses the FPU and does not touch XMM registers.
100 return x1 * 1.01 + x2 * 2.02 + x3 * 3.03 + x4 * 4.04;
101 }
102
103
104 } // namespace internal
105 } // namespace v8
106