amxopcode.cpp

// Copyright (c) 2013-2014 Zeex
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
//    this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// POSSIBILITY OF SUCH DAMAGE.

#include "amxopcode.h"

static cell *GetOpcodeMap() {
  #if defined __GNUC__
    cell *opcode_map;
    AMX amx = {0};
    amx.flags |= AMX_FLAG_BROWSE;
    amx_Exec(&amx, reinterpret_cast<cell*>(&opcode_map), 0);
    amx.flags &= ~AMX_FLAG_BROWSE;
    return opcode_map;
  #else
    return 0;
  #endif
}

cell RelocateAmxOpcode(cell opcode) {
  #if defined __GNUC__
    static cell *opcode_map = GetOpcodeMap();
    if (opcode >= 0 && opcode < NUM_AMX_OPCODES) {
      return opcode_map[opcode];
    }
  #endif
  return opcode;
}