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/*
* Copyright (C) 2009-2018 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <Platform.h>
#if ENABLE(YARR_JIT)
#include "MacroAssemblerCodeRef.h"
#include "MatchResult.h"
#include "Yarr.h"
#include "YarrPattern.h"
#if CPU(X86) && !COMPILER(MSVC)
#define YARR_CALL __attribute__ ((regparm (3)))
#else
#define YARR_CALL
#endif
#if ENABLE(YARR_JIT_ALL_PARENS_EXPRESSIONS)
constexpr size_t patternContextBufferSize = 8192; // Space caller allocates to save nested parenthesis context
#endif
namespace JSC {
class VM;
class ExecutablePool;
namespace Yarr {
enum class JITFailureReason : uint8_t {
DecodeSurrogatePair,
BackReference,
VariableCountedParenthesisWithNonZeroMinimum,
ParenthesizedSubpattern,
NonGreedyParenthesizedSubpattern,
ExecutableMemoryAllocationFailure,
};
class YarrCodeBlock {
#if CPU(X86_64) || CPU(ARM64)
#if ENABLE(YARR_JIT_ALL_PARENS_EXPRESSIONS)
typedef MatchResult (*YarrJITCode8)(const LChar* input, unsigned start, unsigned length, int* output, void* freeParenContext, unsigned parenContextSize) YARR_CALL;
typedef MatchResult (*YarrJITCode16)(const UChar* input, unsigned start, unsigned length, int* output, void* freeParenContext, unsigned parenContextSize) YARR_CALL;
typedef MatchResult (*YarrJITCodeMatchOnly8)(const LChar* input, unsigned start, unsigned length, void*, void* freeParenContext, unsigned parenContextSize) YARR_CALL;
typedef MatchResult (*YarrJITCodeMatchOnly16)(const UChar* input, unsigned start, unsigned length, void*, void* freeParenContext, unsigned parenContextSize) YARR_CALL;
#else
typedef MatchResult (*YarrJITCode8)(const LChar* input, unsigned start, unsigned length, int* output) YARR_CALL;
typedef MatchResult (*YarrJITCode16)(const UChar* input, unsigned start, unsigned length, int* output) YARR_CALL;
typedef MatchResult (*YarrJITCodeMatchOnly8)(const LChar* input, unsigned start, unsigned length) YARR_CALL;
typedef MatchResult (*YarrJITCodeMatchOnly16)(const UChar* input, unsigned start, unsigned length) YARR_CALL;
#endif
#else
typedef EncodedMatchResult (*YarrJITCode8)(const LChar* input, unsigned start, unsigned length, int* output) YARR_CALL;
typedef EncodedMatchResult (*YarrJITCode16)(const UChar* input, unsigned start, unsigned length, int* output) YARR_CALL;
typedef EncodedMatchResult (*YarrJITCodeMatchOnly8)(const LChar* input, unsigned start, unsigned length) YARR_CALL;
typedef EncodedMatchResult (*YarrJITCodeMatchOnly16)(const UChar* input, unsigned start, unsigned length) YARR_CALL;
#endif
public:
YarrCodeBlock() = default;
void setFallBackWithFailureReason(JITFailureReason failureReason) { m_failureReason = failureReason; }
std::optional<JITFailureReason> failureReason() { return m_failureReason; }
bool has8BitCode() { return m_ref8.size(); }
bool has16BitCode() { return m_ref16.size(); }
void set8BitCode(MacroAssemblerCodeRef ref) { m_ref8 = ref; }
void set16BitCode(MacroAssemblerCodeRef ref) { m_ref16 = ref; }
bool has8BitCodeMatchOnly() { return m_matchOnly8.size(); }
bool has16BitCodeMatchOnly() { return m_matchOnly16.size(); }
void set8BitCodeMatchOnly(MacroAssemblerCodeRef matchOnly) { m_matchOnly8 = matchOnly; }
void set16BitCodeMatchOnly(MacroAssemblerCodeRef matchOnly) { m_matchOnly16 = matchOnly; }
#if ENABLE(YARR_JIT_ALL_PARENS_EXPRESSIONS)
bool usesPatternContextBuffer() { return m_usesPatternContextBuffer; }
void setUsesPaternContextBuffer() { m_usesPatternContextBuffer = true; }
MatchResult execute(const LChar* input, unsigned start, unsigned length, int* output, void* freeParenContext, unsigned parenContextSize)
{
ASSERT(has8BitCode());
return MatchResult(reinterpret_cast<YarrJITCode8>(m_ref8.code().executableAddress())(input, start, length, output, freeParenContext, parenContextSize));
}
MatchResult execute(const UChar* input, unsigned start, unsigned length, int* output, void* freeParenContext, unsigned parenContextSize)
{
ASSERT(has16BitCode());
return MatchResult(reinterpret_cast<YarrJITCode16>(m_ref16.code().executableAddress())(input, start, length, output, freeParenContext, parenContextSize));
}
MatchResult execute(const LChar* input, unsigned start, unsigned length, void* freeParenContext, unsigned parenContextSize)
{
ASSERT(has8BitCodeMatchOnly());
return MatchResult(reinterpret_cast<YarrJITCodeMatchOnly8>(m_matchOnly8.code().executableAddress())(input, start, length, 0, freeParenContext, parenContextSize));
}
MatchResult execute(const UChar* input, unsigned start, unsigned length, void* freeParenContext, unsigned parenContextSize)
{
ASSERT(has16BitCodeMatchOnly());
return MatchResult(reinterpret_cast<YarrJITCodeMatchOnly16>(m_matchOnly16.code().executableAddress())(input, start, length, 0, freeParenContext, parenContextSize));
}
#else
MatchResult execute(const LChar* input, unsigned start, unsigned length, int* output)
{
ASSERT(has8BitCode());
return MatchResult(reinterpret_cast<YarrJITCode8>(m_ref8.code().executableAddress())(input, start, length, output));
}
MatchResult execute(const UChar* input, unsigned start, unsigned length, int* output)
{
ASSERT(has16BitCode());
return MatchResult(reinterpret_cast<YarrJITCode16>(m_ref16.code().executableAddress())(input, start, length, output));
}
MatchResult execute(const LChar* input, unsigned start, unsigned length)
{
ASSERT(has8BitCodeMatchOnly());
return MatchResult(reinterpret_cast<YarrJITCodeMatchOnly8>(m_matchOnly8.code().executableAddress())(input, start, length));
}
MatchResult execute(const UChar* input, unsigned start, unsigned length)
{
ASSERT(has16BitCodeMatchOnly());
return MatchResult(reinterpret_cast<YarrJITCodeMatchOnly16>(m_matchOnly16.code().executableAddress())(input, start, length));
}
#endif
#if ENABLE(REGEXP_TRACING)
void *get8BitMatchOnlyAddr()
{
if (!has8BitCodeMatchOnly())
return 0;
return m_matchOnly8.code().executableAddress();
}
void *get16BitMatchOnlyAddr()
{
if (!has16BitCodeMatchOnly())
return 0;
return m_matchOnly16.code().executableAddress();
}
void *get8BitMatchAddr()
{
if (!has8BitCode())
return 0;
return m_ref8.code().executableAddress();
}
void *get16BitMatchAddr()
{
if (!has16BitCode())
return 0;
return m_ref16.code().executableAddress();
}
#endif
size_t size() const
{
return m_ref8.size() + m_ref16.size() + m_matchOnly8.size() + m_matchOnly16.size();
}
void clear()
{
m_ref8 = MacroAssemblerCodeRef();
m_ref16 = MacroAssemblerCodeRef();
m_matchOnly8 = MacroAssemblerCodeRef();
m_matchOnly16 = MacroAssemblerCodeRef();
m_failureReason = std::nullopt;
}
private:
MacroAssemblerCodeRef m_ref8;
MacroAssemblerCodeRef m_ref16;
MacroAssemblerCodeRef m_matchOnly8;
MacroAssemblerCodeRef m_matchOnly16;
#if ENABLE(YARR_JIT_ALL_PARENS_EXPRESSIONS)
bool m_usesPatternContextBuffer;
#endif
std::optional<JITFailureReason> m_failureReason;
};
enum YarrJITCompileMode {
MatchOnly,
IncludeSubpatterns
};
void jitCompile(YarrPattern&, YarrCharSize, VM*, YarrCodeBlock& jitObject, YarrJITCompileMode = IncludeSubpatterns);
} } // namespace JSC::Yarr
#endif
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