1// Copyright 2008 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
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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
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26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28#ifndef V8_IA32_SIMULATOR_IA32_H_
29#define V8_IA32_SIMULATOR_IA32_H_
30
31#include "allocation.h"
32
33namespace v8 {
34namespace internal {
35
36// Since there is no simulator for the ia32 architecture the only thing we can
37// do is to call the entry directly.
38#define CALL_GENERATED_CODE(entry, p0, p1, p2, p3, p4) \
39  (entry(p0, p1, p2, p3, p4))
40
41
42typedef int (*regexp_matcher)(String*, int, const byte*,
43                              const byte*, int*, Address, int, Isolate*);
44
45// Call the generated regexp code directly. The code at the entry address should
46// expect eight int/pointer sized arguments and return an int.
47#define CALL_GENERATED_REGEXP_CODE(entry, p0, p1, p2, p3, p4, p5, p6, p7) \
48  (FUNCTION_CAST<regexp_matcher>(entry)(p0, p1, p2, p3, p4, p5, p6, p7))
49
50
51#define TRY_CATCH_FROM_ADDRESS(try_catch_address) \
52  (reinterpret_cast<TryCatch*>(try_catch_address))
53
54// The stack limit beyond which we will throw stack overflow errors in
55// generated code. Because generated code on ia32 uses the C stack, we
56// just use the C stack limit.
57class SimulatorStack : public v8::internal::AllStatic {
58 public:
59  static inline uintptr_t JsLimitFromCLimit(Isolate* isolate,
60                                            uintptr_t c_limit) {
61    USE(isolate);
62    return c_limit;
63  }
64
65  static inline uintptr_t RegisterCTryCatch(uintptr_t try_catch_address) {
66    return try_catch_address;
67  }
68
69  static inline void UnregisterCTryCatch() { }
70};
71
72} }  // namespace v8::internal
73
74#endif  // V8_IA32_SIMULATOR_IA32_H_
75