/*! @file Target_aarch64.cc
 *  @brief Target_aarch64 Implementation
 *
 *  This file contains the implementation of the base class for
 *  functions supporting target unique functionallity.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include <rld.h>

#include "Target_aarch64.h"

namespace Target {

  Target_aarch64::Target_aarch64( std::string targetName ):
    TargetBase( targetName )
  {
    conditionalBranchInstructions.push_back("cbnz");
    conditionalBranchInstructions.push_back("cbz");
    conditionalBranchInstructions.push_back("tbnz");
    conditionalBranchInstructions.push_back("tbz");
    conditionalBranchInstructions.push_back("b.eq");
    conditionalBranchInstructions.push_back("b.ne");
    conditionalBranchInstructions.push_back("b.cs");
    conditionalBranchInstructions.push_back("b.hs");
    conditionalBranchInstructions.push_back("b.cc");
    conditionalBranchInstructions.push_back("b.lo");
    conditionalBranchInstructions.push_back("b.mi");
    conditionalBranchInstructions.push_back("b.pl");
    conditionalBranchInstructions.push_back("b.vs");
    conditionalBranchInstructions.push_back("b.vc");
    conditionalBranchInstructions.push_back("b.hi");
    conditionalBranchInstructions.push_back("b.ls");
    conditionalBranchInstructions.push_back("b.ge");
    conditionalBranchInstructions.push_back("b.lt");
    conditionalBranchInstructions.push_back("b.gt");
    conditionalBranchInstructions.push_back("b.le");

    conditionalBranchInstructions.sort();
  }

  Target_aarch64::~Target_aarch64()
  {
  }

  bool Target_aarch64::isNopLine(
    const char* const line,
    int&              size
  )
  {
    if (!strcmp( &line[strlen(line)-3], "nop")) {
      size = 4;
      return true;
    }

    if (!strncmp( &line[strlen(line)-6], "udf", 3)) {
      size = 4;
      return true;
    }

    // On ARM, there are literal tables at the end of methods.
    // We need to avoid them.
    if (!strncmp( &line[strlen(line)-10], ".byte", 5)) {
      size = 1;
      return true;
    }
    if (!strncmp( &line[strlen(line)-13], ".short", 6)) {
      size = 2;
      return true;
    }
    if (!strncmp( &line[strlen(line)-16], ".word", 5)) {
      size = 4;
      return true;
    }

    return false;
  }

  bool Target_aarch64::isBranch(
      const char* instruction
  )
  {
    throw rld::error(
      "DETERMINE BRANCH INSTRUCTIONS FOR THIS ARCHITECTURE! -- fix me",
      "Target_aarch64::isBranch"
    );
  }

  TargetBase *Target_aarch64_Constructor(
    std::string          targetName
  )
  {
    return new Target_aarch64( targetName );
  }

}