YarrDisassembler.h [plain text]
#pragma once
#if ENABLE(JIT)
#include "MacroAssembler.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_FAST_ALLOCATED;
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;
unsigned m_indentLevel { 0 };
};
}}
#endif // ENABLE(JIT)