path: root/utils/TableGen/EDEmitter.cpp

//===- EDEmitter.cpp - Generate instruction descriptions for ED -*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This tablegen backend is responsible for emitting a description of each
// instruction in a format that the enhanced disassembler can use to tokenize
// and parse instructions.
//
//===----------------------------------------------------------------------===//

#include "EDEmitter.h"

#include "CodeGenTarget.h"
#include "Record.h"

#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/raw_ostream.h"

#include <vector>
#include <string>

#define MAX_OPERANDS 5
#define MAX_SYNTAXES 2

using namespace llvm;

///////////////////////////////////////////////////////////
// Support classes for emitting nested C data structures //
///////////////////////////////////////////////////////////

namespace {
  
  class EnumEmitter {
  private:
    std::string Name;
    std::vector<std::string> Entries;
  public:
    EnumEmitter(const char *N) : Name(N) { 
    }
    int addEntry(const char *e) { 
      Entries.push_back(std::string(e));
      return Entries.size() - 1; 
    }
    void emit(raw_ostream &o, unsigned int &i) {
      o.indent(i) << "enum " << Name.c_str() << " {" << "\n";
      i += 2;
      
      unsigned int index = 0;
      unsigned int numEntries = Entries.size();
      for(index = 0; index < numEntries; ++index) {
        o.indent(i) << Entries[index];
        if(index < (numEntries - 1))
          o << ",";
        o << "\n";
      }
      
      i -= 2;
      o.indent(i) << "};" << "\n";
    }
    
    void emitAsFlags(raw_ostream &o, unsigned int &i) {
      o.indent(i) << "enum " << Name.c_str() << " {" << "\n";
      i += 2;
      
      unsigned int index = 0;
      unsigned int numEntries = Entries.size();
      unsigned int flag = 1;
      for (index = 0; index < numEntries; ++index) {
        o.indent(i) << Entries[index] << " = " << format("0x%x", flag);
        if (index < (numEntries - 1))
          o << ",";
        o << "\n";
        flag <<= 1;
      }
      
      i -= 2;
      o.indent(i) << "};" << "\n";
    }
  };

  class StructEmitter {
  private:
    std::string Name;
    std::vector<std::string> MemberTypes;
    std::vector<std::string> MemberNames;
  public:
    StructEmitter(const char *N) : Name(N) {
    }
    void addMember(const char *t, const char *n) {
      MemberTypes.push_back(std::string(t));
      MemberNames.push_back(std::string(n));
    }
    void emit(raw_ostream &o, unsigned int &i) {
      o.indent(i) << "struct " << Name.c_str() << " {" << "\n";
      i += 2;
      
      unsigned int index = 0;
      unsigned int numMembers = MemberTypes.size();
      for (index = 0; index < numMembers; ++index) {
        o.indent(i) << MemberTypes[index] << " " << MemberNames[index] << ";";
        o << "\n";
      }
      
      i -= 2;
      o.indent(i) << "};" << "\n";
    }
  };
  
  class ConstantEmitter {
  public:
    virtual ~ConstantEmitter() { }
    virtual void emit(raw_ostream &o, unsigned int &i) = 0;
  };
  
  class LiteralConstantEmitter : public ConstantEmitter {
  private:
    std::string Literal;
  public:
    LiteralConstantEmitter(const char *literal) : Literal(literal) {
    }
    LiteralConstantEmitter(int literal) {
      char buf[256];
      snprintf(buf, 256, "%d", literal);
      Literal = buf;
    }
    void emit(raw_ostream &o, unsigned int &i) {
      o << Literal;
    }
  };
  
  class CompoundConstantEmitter : public ConstantEmitter {
  private:
    std::vector<ConstantEmitter*> Entries;
  public:
    CompoundConstantEmitter() {
    }
    ~CompoundConstantEmitter() {
      unsigned int index;
      unsigned int numEntries = Entries.size();
      for (index = 0; index < numEntries; ++index) {
        delete Entries[index];
      }
    }
    CompoundConstantEmitter &addEntry(ConstantEmitter *e) {
      Entries.push_back(e);
      return *this;
    }
    void emit(raw_ostream &o, unsigned int &i) {
      o << "{" << "\n";
      i += 2;
  
      unsigned int index;
      unsigned int numEntries = Entries.size();
      for (index = 0; index < numEntries; ++index) {
        o.indent(i);
        Entries[index]->emit(o, i);
        if (index < (numEntries - 1))
          o << ",";
        o << "\n";
      }
      
      i -= 2;
      o.indent(i) << "}";
    }
  };
  
  class FlagsConstantEmitter : public ConstantEmitter {
  private:
    std::vector<std::string> Flags;
  public:
    FlagsConstantEmitter() {
    }
    FlagsConstantEmitter &addEntry(const char *f) {
      Flags.push_back(std::string(f));
      return *this;
    }
    void emit(raw_ostream &o, unsigned int &i) {
      unsigned int index;
      unsigned int numFlags = Flags.size();
      if (numFlags == 0)
        o << "0";
      
      for (index = 0; index < numFlags; ++index) {
        o << Flags[index].c_str();
        if (index < (numFlags - 1))
          o << " | ";
      }
    }
  };
}

EDEmitter::EDEmitter(RecordKeeper &R) : Records(R) {
}

//////////////////////////////////////////////
// Support functions for parsing AsmStrings //
//////////////////////////////////////////////

/// parseError - A better error reporter for use in AsmString parsers
///
/// @arg asmString  - The original assembly string, for use in the error report
/// @arg index      - The character where the error occurred
/// @arg err        - The text of the error itself
static void parseError(const std::string& asmString, 
                       unsigned int index, 
                       const char* err) {
  errs() << "In: " << asmString.c_str() << "\n";
  errs() << "Error at " << format("%d", index) << ": " << err << "\n";
  llvm_unreachable("Parse error");
}

/// resolveBraces - Interprets the brace syntax in an AsmString in favor of just
///   one syntax, and returns the result.  "{A}" is resolved to "A" for syntax 0
///   and "" for all others; "{A|B}" is resolved to "A" for syntax 0, "B" for 
///   syntax 1, and "" for all others; and so on.
///
/// @arg asmString    - The original string, as loaded from the .td file
/// @arg syntaxIndex  - The index to use
static std::string resolveBraces(const std::string &asmString, 
                                 unsigned int syntaxIndex) {
  std::string ret;
  
  unsigned int index;
  unsigned int numChars = asmString.length();
  
  // Brace parsing countable-state transducer
  //
  // STATES       - -1, 0, 1, ..., error
  // SYMBOLS      - '{', '|', '}', ?, EOF
  // START STATE  - -1
  //
  // state  input   ->  state output
  // -1     '{'     ->  0
  // -1     '|'     ->  error
  // -1     '}'     ->  error
  // -1     ?       ->  -1    ?
  // -1     EOF     ->  -1
  // n      '{'     ->  error
  // n      '|'     ->  n+1
  // n      '}'     ->  -1
  // n      ?       ->  n     ? if n == syntaxIndex
  //                            if not
  // n      EOF     ->  error
  
  int state = -1;
  
  for (index = 0; index < numChars; ++index) {
    char input = asmString[index];
        
    switch (state) {
    default:
      switch (input) {
      default:
        if (state == (int)syntaxIndex)
          ret.push_back(input);
        break;
      case '{':
        parseError(asmString, index, "Nested { in AsmString");
        break;
      case '|':
        state++;
        break;
      case '}':
        state = -1;
        break;
      }
      break;
    case -1:
      switch (input) {
      default:
        ret.push_back(input);
        break;
      case '{':
        state = 0;
        break;
      case '|':
        parseError(asmString, index, "| outside braces in AsmString");
        break;
      case '}':
        parseError(asmString, index, "Unmatched } in AsmString");
        break;
      }
      break;
    }
  }
  
  if (state != -1)
    parseError(asmString, index, "Unmatched { in AsmString");
  
  return ret;
}

/// getOperandIndex - looks up a named operand in an instruction and determines
///   its index in the operand descriptor array, returning the index or -1 if it
///   is not present.
///
/// @arg asmString  - The assembly string for the instruction, for errors only
/// @arg operand    - The operand's name
/// @arg inst       - The instruction to use when looking up the operand
static int8_t getOperandIndex(const std::string &asmString,
                              const std::string &operand,
                              const CodeGenInstruction &inst) {
  int8_t operandIndex;
  
  if(operand.length() == 0) {
    errs() << "In: " << asmString << "\n";
    errs() << "Operand: " << operand << "\n";
    llvm_unreachable("Empty operand");
  }
  
  try {
    operandIndex = inst.getOperandNamed(operand);
  }
  catch (...) {
    return -1;
  }
  
  return operandIndex;
}

/// isAlphanumeric - returns true if a character is a valid alphanumeric
///   character, and false otherwise
///
/// input - The character to query
static inline bool isAlphanumeric(char input) {
  if((input >= 'a' && input <= 'z') ||
     (input >= 'A' && input <= 'Z') ||
     (input >= '0' && input <= '9') ||
     (input == '_'))
    return true;
  else
    return false;
}

/// populateOperandOrder - reads a resolved AsmString (see resolveBraces) and
///   records the index into the operand descriptor array for each operand in
///   that string, in the order of appearance.
///
/// @arg operandOrder - The array that will be populated with the operand
///                     mapping.  Each entry will contain -1 (invalid index
///                     into the operands present in the AsmString) or a number
///                     representing an index in the operand descriptor array.
/// @arg asmString    - The operand's name
/// @arg inst         - The instruction to use when looking up the operand
void populateOperandOrder(CompoundConstantEmitter *operandOrder,
                          const std::string &asmString,
                          const CodeGenInstruction &inst) {
  std::string aux;
  
  unsigned int index;
  unsigned int numChars = asmString.length();
  unsigned int numArgs = 0;
  
  // Argument processing finite-state transducer
  //
  // STATES       - 0, 1, error
  // SYMBOLS      - A(lphanumeric), '$', ?, EOF
  // START STATE  - 0
  //
  // state  input   ->  state aux
  // 0      A       ->  0
  // 0      '$'     ->  1
  // 0      ?       ->  0
  // 0      EOF     ->  0
  // 1      A       ->  1     A
  // 1      '$'     ->  error
  // 1      ?       ->  0     clear
  // 1      EOF     ->  0     clear
  
  unsigned int state = 0;
  
  for (index = 0; index < numChars; ++index) {
    char input = asmString[index];
    
    switch (state) {
      default:
        parseError(asmString, index, "Parser in unreachable state");
      case 0:
        if (input == '$') {
          state = 1;
        }
        break;
      case 1:
        if (isAlphanumeric(input)) {
          aux.push_back(input);
        }
        else if (input == '$') {
          parseError(asmString, index, "$ found in argument name");
        }
        else {
          int8_t operandIndex = getOperandIndex(asmString, aux, inst);
          char buf[3];
          snprintf(buf, sizeof(buf), "%d", operandIndex);
          operandOrder->addEntry(new LiteralConstantEmitter(buf));
          aux.clear();
          state = 0;
          numArgs++;
        }
        break;
    }
  }
  
  if (state == 1) {
    int8_t operandIndex = getOperandIndex(asmString, aux, inst);
    char buf[2];
    snprintf(buf, 2, "%d", operandIndex);
    operandOrder->addEntry(new LiteralConstantEmitter(buf));
    aux.clear();
    numArgs++;
  }
  
  for(; numArgs < MAX_OPERANDS; numArgs++) {
    operandOrder->addEntry(new LiteralConstantEmitter("-1"));
  }
}

/////////////////////////////////////////////////////
// Support functions for handling X86 instructions //
/////////////////////////////////////////////////////

#define ADDFLAG(flag) flags->addEntry(flag)

#define REG(str) if (name == str) { ADDFLAG("kOperandFlagRegister"); return 0; }
#define MEM(str) if (name == str) { ADDFLAG("kOperandFlagMemory"); return 0; }
#define LEA(str) if (name == str) { ADDFLAG("kOperandFlagEffectiveAddress"); \
                                    return 0; }
#define IMM(str) if (name == str) { ADDFLAG("kOperandFlagImmediate"); \
                                    return 0; }
#define PCR(str) if (name == str) { ADDFLAG("kOperandFlagMemory"); \
                                    ADDFLAG("kOperandFlagPCRelative"); \
                                    return 0; }

/// X86FlagFromOpName - Processes the name of a single X86 operand (which is
///   actually its type) and translates it into an operand flag
///
/// @arg flags    - The flags object to add the flag to
/// @arg name     - The name of the operand
static int X86FlagFromOpName(FlagsConstantEmitter *flags,
                             const std::string &name) {
  REG("GR8");
  REG("GR8_NOREX");
  REG("GR16");
  REG("GR32");
  REG("GR32_NOREX");
  REG("FR32");
  REG("RFP32");
  REG("GR64");
  REG("FR64");
  REG("VR64");
  REG("RFP64");
  REG("RFP80");
  REG("VR128");
  REG("RST");
  REG("SEGMENT_REG");
  REG("DEBUG_REG");
  REG("CONTROL_REG_32");
  REG("CONTROL_REG_64");
  
  MEM("i8mem");
  MEM("i8mem_NOREX");
  MEM("i16mem");
  MEM("i32mem");
  MEM("f32mem");
  MEM("ssmem");
  MEM("opaque32mem");
  MEM("opaque48mem");
  MEM("i64mem");
  MEM("f64mem");
  MEM("sdmem");
  MEM("f80mem");
  MEM("opaque80mem");
  MEM("i128mem");
  MEM("f128mem");
  MEM("opaque512mem");
  
  LEA("lea32mem");
  LEA("lea64_32mem");
  LEA("lea64mem");
  
  IMM("i8imm");
  IMM("i16imm");
  IMM("i16i8imm");
  IMM("i32imm");
  IMM("i32imm_pcrel");
  IMM("i32i8imm");
  IMM("i64imm");
  IMM("i64i8imm");
  IMM("i64i32imm");
  IMM("i64i32imm_pcrel");
  IMM("SSECC");
  
  PCR("brtarget8");
  PCR("offset8");
  PCR("offset16");
  PCR("offset32");
  PCR("offset64");
  PCR("brtarget");
  
  return 1;
}

#undef REG
#undef MEM
#undef LEA
#undef IMM
#undef PCR
#undef ADDFLAG

/// X86PopulateOperands - Handles all the operands in an X86 instruction, adding
///   the appropriate flags to their descriptors
///
/// @operandFlags - A reference the array of operand flag objects
/// @inst         - The instruction to use as a source of information
static void X86PopulateOperands(
  FlagsConstantEmitter *(&operandFlags)[MAX_OPERANDS],
  const CodeGenInstruction &inst) {
  if (!inst.TheDef->isSubClassOf("X86Inst"))
    return;
  
  unsigned int index;
  unsigned int numOperands = inst.OperandList.size();
  
  for (index = 0; index < numOperands; ++index) {
    const CodeGenInstruction::OperandInfo &operandInfo = 
      inst.OperandList[index];
    Record &rec = *operandInfo.Rec;
    
    if (X86FlagFromOpName(operandFlags[index], rec.getName())) {
      errs() << "Operand type: " << rec.getName().c_str() << "\n";
      errs() << "Operand name: " << operandInfo.Name.c_str() << "\n";
      errs() << "Instruction mame: " << inst.TheDef->getName().c_str() << "\n";
      llvm_unreachable("Unhandled type");
    }
  }
}

/// decorate1 - Decorates a named operand with a new flag
///
/// @operandFlags - The array of operand flag objects, which don't have names
/// @inst         - The CodeGenInstruction, which provides a way to translate
///                 between names and operand indices
/// @opName       - The name of the operand
/// @flag         - The name of the flag to add
static inline void decorate1(FlagsConstantEmitter *(&operandFlags)[MAX_OPERANDS],
                             const CodeGenInstruction &inst,
                             const char *opName,
                             const char *opFlag) {
  unsigned opIndex;
  
  try {
    opIndex = inst.getOperandNamed(std::string(opName));
  }
  catch (...) {
    errs() << "Instruction: " << inst.TheDef->getName().c_str() << "\n";
    errs() << "Operand name: " << opName << "\n";
    llvm_unreachable("Couldn't find operand");
  }
  
  operandFlags[opIndex]->addEntry(opFlag);
}

#define DECORATE1(opName, opFlag) decorate1(operandFlags, inst, opName, opFlag)

#define MOV(source, target) {                       \
  instFlags.addEntry("kInstructionFlagMove");       \
  DECORATE1(source, "kOperandFlagSource");          \
  DECORATE1(target, "kOperandFlagTarget");          \
}

#define BRANCH(target) {                            \
  instFlags.addEntry("kInstructionFlagBranch");     \
  DECORATE1(target, "kOperandFlagTarget");          \
}

#define PUSH(source) {                              \
  instFlags.addEntry("kInstructionFlagPush");       \
  DECORATE1(source, "kOperandFlagSource");          \
}

#define POP(target) {                               \
  instFlags.addEntry("kInstructionFlagPop");        \
  DECORATE1(target, "kOperandFlagTarget");          \
}

#define CALL(target) {                              \
  instFlags.addEntry("kInstructionFlagCall");       \
  DECORATE1(target, "kOperandFlagTarget");          \
}

#define RETURN() {                                  \
  instFlags.addEntry("kInstructionFlagReturn");     \
}

/// X86ExtractSemantics - Performs various checks on the name of an X86
///   instruction to determine what sort of an instruction it is and then adds 
///   the appropriate flags to the instruction and its operands
///
/// @arg instFlags    - A reference to the flags for the instruction as a whole
/// @arg operandFlags - A reference to the array of operand flag object pointers
/// @arg inst         - A reference to the original instruction
static void X86ExtractSemantics(FlagsConstantEmitter &instFlags,
                                FlagsConstantEmitter *(&operandFlags)[MAX_OPERANDS],
                                const CodeGenInstruction &inst) {
  const std::string &name = inst.TheDef->getName();
    
  if (name.find("MOV") != name.npos) {
    if (name.find("MOV_V") != name.npos) {
      // ignore (this is a pseudoinstruction)
    }
    else if (name.find("MASK") != name.npos) {
      // ignore (this is a masking move)
    }
    else if (name.find("r0") != name.npos) {
      // ignore (this is a pseudoinstruction)
    }
    else if (name.find("PS") != name.npos ||
             name.find("PD") != name.npos) {
      // ignore (this is a shuffling move)
    }
    else if (name.find("MOVS") != name.npos) {
      // ignore (this is a string move)
    }
    else if (name.find("_F") != name.npos) {
      // TODO handle _F moves to ST(0)
    }
    else if (name.find("a") != name.npos) {
      // TODO handle moves to/from %ax
    }
    else if (name.find("CMOV") != name.npos) {
      MOV("src2", "dst");
    }
    else if (name.find("PC") != name.npos) {
      MOV("label", "reg")
    }
    else {
      MOV("src", "dst");
    }
  }
  
  if (name.find("JMP") != name.npos ||
      name.find("J") == 0) {
    if (name.find("FAR") != name.npos && name.find("i") != name.npos) {
      BRANCH("off");
    }
    else {
      BRANCH("dst");
    }
  }
  
  if (name.find("PUSH") != name.npos) {
    if (name.find("FS") != name.npos ||
        name.find("GS") != name.npos) {
      instFlags.addEntry("kInstructionFlagPush");
      // TODO add support for fixed operands
    }
    else if (name.find("F") != name.npos) {
      // ignore (this pushes onto the FP stack)
    }
    else if (name[name.length() - 1] == 'm') {
      PUSH("src");
    }
    else if (name.find("i") != name.npos) {
      PUSH("imm");
    }
    else {
      PUSH("reg");
    }
  }
  
  if (name.find("POP") != name.npos) {
    if (name.find("POPCNT") != name.npos) {
      // ignore (not a real pop)
    }
    else if (name.find("FS") != name.npos ||
             name.find("GS") != name.npos) {
      instFlags.addEntry("kInstructionFlagPop");
      // TODO add support for fixed operands
    }
    else if (name.find("F") != name.npos) {
      // ignore (this pops from the FP stack)
    }
    else if (name[name.length() - 1] == 'm') {
      POP("dst");
    }
    else {
      POP("reg");
    }
  }
  
  if (name.find("CALL") != name.npos) {
    if (name.find("ADJ") != name.npos) {
      // ignore (not a call)
    }
    else if (name.find("SYSCALL") != name.npos) {
      // ignore (doesn't go anywhere we know about)
    }
    else if (name.find("VMCALL") != name.npos) {
      // ignore (rather different semantics than a regular call)
    }
    else if (name.find("FAR") != name.npos && name.find("i") != name.npos) {
      CALL("off");
    }
    else {
      CALL("dst");
    }
  }
  
  if (name.find("RET") != name.npos) {
    RETURN();
  }
}

#undef MOV
#undef BRANCH
#undef PUSH
#undef POP
#undef CALL
#undef RETURN

#undef COND_DECORATE_2
#undef COND_DECORATE_1
#undef DECORATE1

/// populateInstInfo - Fills an array of InstInfos with information about each 
///   instruction in a target
///
/// @arg infoArray  - The array of InstInfo objects to populate
/// @arg target     - The CodeGenTarget to use as a source of instructions
static void populateInstInfo(CompoundConstantEmitter &infoArray,
                             CodeGenTarget &target) {
  std::vector<const CodeGenInstruction*> numberedInstructions;
  target.getInstructionsByEnumValue(numberedInstructions);
  
  unsigned int index;
  unsigned int numInstructions = numberedInstructions.size();
  
  for (index = 0; index < numInstructions; ++index) {
    const CodeGenInstruction& inst = *numberedInstructions[index];
    
    CompoundConstantEmitter *infoStruct = new CompoundConstantEmitter;
    infoArray.addEntry(infoStruct);
    
    FlagsConstantEmitter *instFlags = new FlagsConstantEmitter;
    infoStruct->addEntry(instFlags);
    
    LiteralConstantEmitter *numOperandsEmitter = 
      new LiteralConstantEmitter(inst.OperandList.size());
    infoStruct->addEntry(numOperandsEmitter);
                         
    CompoundConstantEmitter *operandFlagArray = new CompoundConstantEmitter;
    infoStruct->addEntry(operandFlagArray);
        
    FlagsConstantEmitter *operandFlags[MAX_OPERANDS];
    
    for (unsigned operandIndex = 0; operandIndex < MAX_OPERANDS; ++operandIndex) {
      operandFlags[operandIndex] = new FlagsConstantEmitter;
      operandFlagArray->addEntry(operandFlags[operandIndex]);
    }
 
    unsigned numSyntaxes = 0;
    
    if (target.getName() == "X86") {
      X86PopulateOperands(operandFlags, inst);
      X86ExtractSemantics(*instFlags, operandFlags, inst);
      numSyntaxes = 2;
    }
    
    CompoundConstantEmitter *operandOrderArray = new CompoundConstantEmitter;
    infoStruct->addEntry(operandOrderArray);
    
    for (unsigned syntaxIndex = 0; syntaxIndex < MAX_SYNTAXES; ++syntaxIndex) {
      CompoundConstantEmitter *operandOrder = new CompoundConstantEmitter;
      operandOrderArray->addEntry(operandOrder);
      
      if (syntaxIndex < numSyntaxes) {
        std::string asmString = inst.AsmString;
        asmString = resolveBraces(asmString, syntaxIndex);
        populateOperandOrder(operandOrder, asmString, inst);
      }
      else {
        for (unsigned operandIndex = 0; 
             operandIndex < MAX_OPERANDS; 
             ++operandIndex) {
          operandOrder->addEntry(new LiteralConstantEmitter("-1"));
        }
      }
    }
  }
}

void EDEmitter::run(raw_ostream &o) {
  unsigned int i = 0;
  
  CompoundConstantEmitter infoArray;
  CodeGenTarget target;
  
  populateInstInfo(infoArray, target);
  
  o << "InstInfo instInfo" << target.getName().c_str() << "[] = ";
  infoArray.emit(o, i);
  o << ";" << "\n";
}

void EDEmitter::runHeader(raw_ostream &o) {
  EmitSourceFileHeader("Semantic Information Header", o);
  
  o << "#ifndef SemanticInfo_" << "\n";
  o << "#define SemanticInfo_" << "\n";
  o << "\n";
  o << "#include <inttypes.h>" << "\n";
  o << "\n";
  o << "#define MAX_OPERANDS " << format("%d", MAX_OPERANDS) << "\n";
  o << "#define MAX_SYNTAXES " << format("%d", MAX_SYNTAXES) << "\n";
  o << "\n";
  
  unsigned int i = 0;
  
  EnumEmitter operandFlags("OperandFlags");
  operandFlags.addEntry("kOperandFlagImmediate");
  operandFlags.addEntry("kOperandFlagRegister");
  operandFlags.addEntry("kOperandFlagMemory");
  operandFlags.addEntry("kOperandFlagEffectiveAddress");
  operandFlags.addEntry("kOperandFlagPCRelative");
  operandFlags.addEntry("kOperandFlagSource");
  operandFlags.addEntry("kOperandFlagTarget");
  operandFlags.emitAsFlags(o, i);
  
  o << "\n";
  
  EnumEmitter instructionFlags("InstructionFlags");
  instructionFlags.addEntry("kInstructionFlagMove");
  instructionFlags.addEntry("kInstructionFlagBranch");
  instructionFlags.addEntry("kInstructionFlagPush");
  instructionFlags.addEntry("kInstructionFlagPop");
  instructionFlags.addEntry("kInstructionFlagCall");
  instructionFlags.addEntry("kInstructionFlagReturn");
  instructionFlags.emitAsFlags(o, i);
  
  o << "\n";
  
  StructEmitter instInfo("InstInfo");
  instInfo.addMember("uint32_t", "instructionFlags");
  instInfo.addMember("uint8_t", "numOperands");
  instInfo.addMember("uint8_t", "operandFlags[MAX_OPERANDS]");
  instInfo.addMember("const char", "operandOrders[MAX_SYNTAXES][MAX_OPERANDS]");
  instInfo.emit(o, i);
  
  o << "\n";
  o << "#endif" << "\n";
}