jit/JITDisassembler.h

   1 /*
   2  * Copyright (C) 2012 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 JITDisassembler_h
  27 #define JITDisassembler_h
  28
  29 #if ENABLE(JIT)
  30
  31 #include "MacroAssembler.h"
  32 #include <wtf/Vector.h>
  33 #include <wtf/text/CString.h>
  34
  35 namespace JSC {
  36
  37 class CodeBlock;
  38 class LinkBuffer;
  39
  40 namespace Profiler {
  41 class Compilation;
  42 }
  43
  44 class JITDisassembler {
  45     WTF_MAKE_FAST_ALLOCATED;
  46 public:
  47     JITDisassembler(CodeBlock*);
  48     ~JITDisassembler();
  49
  50     void setStartOfCode(MacroAssembler::Label label) { m_startOfCode = label; }
  51     void setForBytecodeMainPath(unsigned bytecodeIndex, MacroAssembler::Label label)
  52     {
  53         m_labelForBytecodeIndexInMainPath[bytecodeIndex] = label;
  54     }
  55     void setForBytecodeSlowPath(unsigned bytecodeIndex, MacroAssembler::Label label)
  56     {
  57         m_labelForBytecodeIndexInSlowPath[bytecodeIndex] = label;
  58     }
  59     void setEndOfSlowPath(MacroAssembler::Label label) { m_endOfSlowPath = label; }
  60     void setEndOfCode(MacroAssembler::Label label) { m_endOfCode = label; }
  61
  62     void dump(LinkBuffer&);
  63     void dump(PrintStream&, LinkBuffer&);
  64     void reportToProfiler(Profiler::Compilation*, LinkBuffer&);
  65
  66 private:
  67     void dumpHeader(PrintStream&, LinkBuffer&);
  68     MacroAssembler::Label firstSlowLabel();
  69
  70     struct DumpedOp {
  71         unsigned index;
  72         CString disassembly;
  73     };
  74     Vector<DumpedOp> dumpVectorForInstructions(LinkBuffer&, const char* prefix, Vector<MacroAssembler::Label>& labels, MacroAssembler::Label endLabel);
  75
  76     void dumpForInstructions(PrintStream&, LinkBuffer&, const char* prefix, Vector<MacroAssembler::Label>& labels, MacroAssembler::Label endLabel);
  77     void reportInstructions(Profiler::Compilation*, LinkBuffer&, const char* prefix, Vector<MacroAssembler::Label>& labels, MacroAssembler::Label endLabel);
  78
  79     void dumpDisassembly(PrintStream&, LinkBuffer&, MacroAssembler::Label from, MacroAssembler::Label to);
  80
  81     CodeBlock* m_codeBlock;
  82     MacroAssembler::Label m_startOfCode;
  83     Vector<MacroAssembler::Label> m_labelForBytecodeIndexInMainPath;
  84     Vector<MacroAssembler::Label> m_labelForBytecodeIndexInSlowPath;
  85     MacroAssembler::Label m_endOfSlowPath;
  86     MacroAssembler::Label m_endOfCode;
  87 };
  88
  89 } // namespace JSC
  90
  91 #endif // ENABLE(JIT)
  92
  93 #endif // JITDisassembler_h
  94