1/*
2 * Copyright (C) 2009 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 YarrJIT_h
27#define YarrJIT_h
28
29#if ENABLE(YARR_JIT)
30
31#include "JSGlobalData.h"
32#include "MacroAssembler.h"
33#include "UString.h"
34#include "YarrPattern.h"
35
36#if CPU(X86) && !COMPILER(MSVC)
37#define YARR_CALL __attribute__ ((regparm (3)))
38#else
39#define YARR_CALL
40#endif
41
42namespace JSC {
43
44class JSGlobalData;
45class ExecutablePool;
46
47namespace Yarr {
48
49class YarrCodeBlock {
50    typedef int (*YarrJITCode)(const UChar* input, unsigned start, unsigned length, int* output) YARR_CALL;
51
52public:
53    YarrCodeBlock()
54        : m_needFallBack(false)
55    {
56    }
57
58    ~YarrCodeBlock()
59    {
60    }
61
62    void setFallBack(bool fallback) { m_needFallBack = fallback; }
63    bool isFallBack() { return m_needFallBack; }
64    void set(MacroAssembler::CodeRef ref) { m_ref = ref; }
65
66    int execute(const UChar* input, unsigned start, unsigned length, int* output)
67    {
68        return reinterpret_cast<YarrJITCode>(m_ref.m_code.executableAddress())(input, start, length, output);
69    }
70
71#if ENABLE(REGEXP_TRACING)
72    void *getAddr() { return m_ref.m_code.executableAddress(); }
73#endif
74
75private:
76    MacroAssembler::CodeRef m_ref;
77    bool m_needFallBack;
78};
79
80void jitCompile(YarrPattern&, JSGlobalData*, YarrCodeBlock& jitObject);
81int execute(YarrCodeBlock& jitObject, const UChar* input, unsigned start, unsigned length, int* output);
82
83} } // namespace JSC::Yarr
84
85#endif
86
87#endif // YarrJIT_h
88