blob: 0f4a4d447d50bc354f38adb6db4f811fa252e0c4 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_WASM_OBJECT_ACCESS_H_
#define V8_WASM_OBJECT_ACCESS_H_
#include "src/globals.h"
#include "src/objects/fixed-array.h"
#include "src/objects/js-objects.h"
#include "src/objects/shared-function-info.h"
namespace v8 {
namespace internal {
namespace wasm {
class ObjectAccess : public AllStatic {
public:
// Convert an offset into an object to an offset into a tagged object.
static constexpr int ToTagged(int offset) { return offset - kHeapObjectTag; }
// Get the offset into a fixed array for a given {index}.
static constexpr int ElementOffsetInTaggedFixedArray(int index) {
return ToTagged(FixedArray::OffsetOfElementAt(index));
}
// Get the offset of the context stored in a {JSFunction} object.
static constexpr int ContextOffsetInTaggedJSFunction() {
return ToTagged(JSFunction::kContextOffset);
}
// Get the offset of the shared function info in a {JSFunction} object.
static constexpr int SharedFunctionInfoOffsetInTaggedJSFunction() {
return ToTagged(JSFunction::kSharedFunctionInfoOffset);
}
// Get the offset of the formal parameter count in a {SharedFunctionInfo}
// object.
static constexpr int FormalParameterCountOffsetInSharedFunctionInfo() {
return ToTagged(SharedFunctionInfo::kFormalParameterCountOffset);
}
};
} // namespace wasm
} // namespace internal
} // namespace v8
#endif // V8_WASM_OBJECT_ACCESS_H_
|
