/* Capstone Disassembly Engine */

/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2019 */

#include "MCInstrDesc.h"

/// isPredicate - Set if this is one of the operands that made up of

/// the predicate operand that controls an isPredicable() instruction.

bool MCOperandInfo_isPredicate(const MCOperandInfo *m)

{

  return m->Flags & (1 << MCOI_Predicate);

}

/// isOptionalDef - Set if this operand is a optional def.

///

bool MCOperandInfo_isOptionalDef(const MCOperandInfo *m)

{

  return m->Flags & (1 << MCOI_OptionalDef);

}

/// Checks if operand is tied to another one.

bool MCOperandInfo_isTiedToOp(const MCOperandInfo *m)

{

  if (m->Constraints & (1 << MCOI_TIED_TO))

    return true;

  return false;

}

/// Returns the value of the specified operand constraint if

/// it is present. Returns -1 if it is not present.

int MCOperandInfo_getOperandConstraint(const MCInstrDesc *InstrDesc,

               unsigned OpNum,

               MCOI_OperandConstraint Constraint)

{

  const MCOperandInfo OpInfo = InstrDesc->OpInfo[OpNum];

  if (OpNum < InstrDesc->NumOperands &&

      (OpInfo.Constraints & (1 << Constraint))) {

    unsigned ValuePos = 4 + Constraint * 4;

    return (OpInfo.Constraints >> ValuePos) & 0xf;

  }

  return -1;

}

/// Returns the instruction description for the given MCInst opcode.

/// Function should be called like:

/// MCInstrDesc_get(MCInst_getOpcode(MI), ARCHInstDesc, ARR_SIZE(ARCHInstDesc));

const MCInstrDesc *MCInstrDesc_get(unsigned opcode, const MCInstrDesc *table, unsigned tbl_size) {

  return &table[tbl_size - 1 - opcode];

}