1/*
2 * Copyright (C) 2016 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef LLIntPCRanges_h
27#define LLIntPCRanges_h
28
29namespace JSC {
30
31namespace LLInt {
32
33// These are used just to denote where LLInt code begins and where it ends.
34extern "C" {
35 void llintPCRangeStart();
36 void llintPCRangeEnd();
37}
38
39ALWAYS_INLINE bool isLLIntPC(void* pc)
40{
41 uintptr_t pcAsInt = bitwise_cast<uintptr_t>(pc);
42 uintptr_t llintStart = bitwise_cast<uintptr_t>(llintPCRangeStart);
43 uintptr_t llintEnd = bitwise_cast<uintptr_t>(llintPCRangeEnd);
44 RELEASE_ASSERT(llintStart < llintEnd);
45 return llintStart <= pcAsInt && pcAsInt <= llintEnd;
46}
47
48#if ENABLE(JIT)
49static const GPRReg LLIntPC = GPRInfo::regT4;
50#endif
51
52} } // namespace JSC::LLInt
53
54#endif // LLIntPCRanges_h
55