1// Copyright 2012 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#ifndef V8_X64_SIMULATOR_X64_H_
6#define V8_X64_SIMULATOR_X64_H_
7
8#include "src/allocation.h"
9
10namespace v8 {
11namespace internal {
12
13// Since there is no simulator for the x64 architecture the only thing we can
14// do is to call the entry directly.
15// TODO(X64): Don't pass p0, since it isn't used?
16#define CALL_GENERATED_CODE(entry, p0, p1, p2, p3, p4) \
17  (entry(p0, p1, p2, p3, p4))
18
19typedef int (*regexp_matcher)(String*, int, const byte*,
20                              const byte*, int*, int, Address, int, Isolate*);
21
22// Call the generated regexp code directly. The code at the entry address should
23// expect eight int/pointer sized arguments and return an int.
24#define CALL_GENERATED_REGEXP_CODE(entry, p0, p1, p2, p3, p4, p5, p6, p7, p8) \
25  (FUNCTION_CAST<regexp_matcher>(entry)(p0, p1, p2, p3, p4, p5, p6, p7, p8))
26
27// The stack limit beyond which we will throw stack overflow errors in
28// generated code. Because generated code on x64 uses the C stack, we
29// just use the C stack limit.
30class SimulatorStack : public v8::internal::AllStatic {
31 public:
32  static inline uintptr_t JsLimitFromCLimit(Isolate* isolate,
33                                            uintptr_t c_limit) {
34    return c_limit;
35  }
36
37  static inline uintptr_t RegisterCTryCatch(uintptr_t try_catch_address) {
38    return try_catch_address;
39  }
40
41  static inline void UnregisterCTryCatch() { }
42};
43
44} }  // namespace v8::internal
45
46#endif  // V8_X64_SIMULATOR_X64_H_
47