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/*
* Copyright (C) 2018-2023 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
#if ENABLE(JIT)
#include "MacroAssembler.h"
#include <wtf/TZoneMalloc.h>
#include <wtf/Vector.h>
#include <wtf/text/CString.h>
namespace JSC {
class LinkBuffer;
namespace Yarr {
class YarrCodeBlock;
class YarrJITInfo {
public:
virtual ~YarrJITInfo() { };
virtual const char* variant() = 0;
virtual unsigned opCount() = 0;
virtual void dumpPatternString(PrintStream&) = 0;
virtual int dumpFor(PrintStream&, unsigned) = 0;
};
class YarrDisassembler {
WTF_MAKE_TZONE_ALLOCATED(YarrDisassembler);
public:
YarrDisassembler(YarrJITInfo*);
~YarrDisassembler();
void setStartOfCode(MacroAssembler::Label label) { m_startOfCode = label; }
void setForGenerate(unsigned opIndex, MacroAssembler::Label label)
{
m_labelForGenerateYarrOp[opIndex] = label;
}
void setForBacktrack(unsigned opIndex, MacroAssembler::Label label)
{
m_labelForBacktrackYarrOp[opIndex] = label;
}
void setEndOfGenerate(MacroAssembler::Label label) { m_endOfGenerate = label; }
void setEndOfBacktrack(MacroAssembler::Label label) { m_endOfBacktrack = label; }
void setEndOfCode(MacroAssembler::Label label) { m_endOfCode = label; }
void dump(LinkBuffer&);
void dump(PrintStream&, LinkBuffer&);
private:
enum class VectorOrder {
IterateForward,
IterateReverse
};
void dumpHeader(PrintStream&, LinkBuffer&);
MacroAssembler::Label firstSlowLabel();
struct DumpedOp {
unsigned index;
CString disassembly;
};
const char* indentString(unsigned);
const char* indentString()
{
return indentString(m_indentLevel);
}
Vector<DumpedOp> dumpVectorForInstructions(LinkBuffer&, Vector<MacroAssembler::Label>& labels, MacroAssembler::Label endLabel, YarrDisassembler::VectorOrder vectorOrder = VectorOrder::IterateForward);
void dumpForInstructions(PrintStream&, LinkBuffer&, Vector<MacroAssembler::Label>& labels, MacroAssembler::Label endLabel, YarrDisassembler::VectorOrder vectorOrder = VectorOrder::IterateForward);
void dumpDisassembly(PrintStream&, const char* prefix, LinkBuffer&, MacroAssembler::Label from, MacroAssembler::Label to);
YarrJITInfo* m_jitInfo;
MacroAssembler::Label m_startOfCode;
Vector<MacroAssembler::Label> m_labelForGenerateYarrOp;
Vector<MacroAssembler::Label> m_labelForBacktrackYarrOp;
MacroAssembler::Label m_endOfGenerate;
MacroAssembler::Label m_endOfBacktrack;
MacroAssembler::Label m_endOfCode;
void* m_codeStart { nullptr };
void* m_codeEnd { nullptr };
unsigned m_indentLevel { 0 };
};
}} // namespace Yarr namespace JSC
#endif // ENABLE(JIT)
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