src/mem/packet_access.hh

   1 /*
   2  * Copyright (c) 2015 ARM Limited
   3  * All rights reserved
   4  *
   5  * The license below extends only to copyright in the software and shall
   6  * not be construed as granting a license to any other intellectual
   7  * property including but not limited to intellectual property relating
   8  * to a hardware implementation of the functionality of the software
   9  * licensed hereunder.  You may use the software subject to the license
  10  * terms below provided that you ensure that this notice is replicated
  11  * unmodified and in its entirety in all distributions of the software,
  12  * modified or unmodified, in source code or in binary form.
  13  *
  14  * Copyright (c) 2006 The Regents of The University of Michigan
  15  * All rights reserved.
  16  *
  17  * Redistribution and use in source and binary forms, with or without
  18  * modification, are permitted provided that the following conditions are
  19  * met: redistributions of source code must retain the above copyright
  20  * notice, this list of conditions and the following disclaimer;
  21  * redistributions in binary form must reproduce the above copyright
  22  * notice, this list of conditions and the following disclaimer in the
  23  * documentation and/or other materials provided with the distribution;
  24  * neither the name of the copyright holders nor the names of its
  25  * contributors may be used to endorse or promote products derived from
  26  * this software without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  29  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  30  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  31  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  32  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  33  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  34  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  35  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  36  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  37  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  38  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  39  *
  40  * Authors: Ali Saidi
  41  *          Nathan Binkert
  42  *          Andreas Sandberg
  43  */
  44
  45 #ifndef __MEM_PACKET_ACCESS_HH__
  46 #define __MEM_PACKET_ACCESS_HH__
  47
  48 #include "mem/packet.hh"
  49 #include "sim/byteswap.hh"
  50
  51 template <typename T>
  52 inline T
  53 Packet::getRaw() const
  54 {
  55     assert(flags.isSet(STATIC_DATA|DYNAMIC_DATA));
  56     assert(sizeof(T) <= size);
  57     return *(T*)data;
  58 }
  59
  60 template <typename T>
  61 inline void
  62 Packet::setRaw(T v)
  63 {
  64     assert(flags.isSet(STATIC_DATA|DYNAMIC_DATA));
  65     assert(sizeof(T) <= size);
  66     *(T*)data = v;
  67 }
  68
  69
  70 template <typename T>
  71 inline T
  72 Packet::getBE() const
  73 {
  74     return betoh(getRaw<T>());
  75 }
  76
  77 template <typename T>
  78 inline T
  79 Packet::getLE() const
  80 {
  81     return letoh(getRaw<T>());
  82 }
  83
  84 template <typename T>
  85 inline T
  86 Packet::get(ByteOrder endian) const
  87 {
  88     switch (endian) {
  89       case BigEndianByteOrder:
  90         return getBE<T>();
  91
  92       case LittleEndianByteOrder:
  93         return getLE<T>();
  94
  95       default:
  96         panic("Illegal byte order in Packet::get()\n");
  97     };
  98 }
  99
 100 template <typename T>
 101 inline void
 102 Packet::setBE(T v)
 103 {
 104     setRaw(htobe(v));
 105 }
 106
 107 template <typename T>
 108 inline void
 109 Packet::setLE(T v)
 110 {
 111     setRaw(htole(v));
 112 }
 113
 114 template <typename T>
 115 inline void
 116 Packet::set(T v, ByteOrder endian)
 117 {
 118     switch (endian) {
 119       case BigEndianByteOrder:
 120         return setBE<T>(v);
 121
 122       case LittleEndianByteOrder:
 123         return setLE<T>(v);
 124
 125       default:
 126         panic("Illegal byte order in Packet::set()\n");
 127     };
 128 }
 129
 130 #endif //__MEM_PACKET_ACCESS_HH__