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
  41 #ifndef __MEM_PACKET_ACCESS_HH__
  42 #define __MEM_PACKET_ACCESS_HH__
  43
  44 #include "mem/packet.hh"
  45 #include "sim/byteswap.hh"
  46
  47 template <typename T>
  48 inline T
  49 Packet::getRaw() const
  50 {
  51     assert(flags.isSet(STATIC_DATA|DYNAMIC_DATA));
  52     assert(sizeof(T) <= size);
  53     return *(T*)data;
  54 }
  55
  56 template <typename T>
  57 inline void
  58 Packet::setRaw(T v)
  59 {
  60     assert(flags.isSet(STATIC_DATA|DYNAMIC_DATA));
  61     assert(sizeof(T) <= size);
  62     *(T*)data = v;
  63 }
  64
  65
  66 template <typename T>
  67 inline T
  68 Packet::getBE() const
  69 {
  70     return betoh(getRaw<T>());
  71 }
  72
  73 template <typename T>
  74 inline T
  75 Packet::getLE() const
  76 {
  77     return letoh(getRaw<T>());
  78 }
  79
  80 template <typename T>
  81 inline T
  82 Packet::get(ByteOrder endian) const
  83 {
  84     switch (endian) {
  85       case ByteOrder::big:
  86         return getBE<T>();
  87
  88       case ByteOrder::little:
  89         return getLE<T>();
  90
  91       default:
  92         panic("Illegal byte order in Packet::get()\n");
  93     };
  94 }
  95
  96 template <typename T>
  97 inline void
  98 Packet::setBE(T v)
  99 {
 100     setRaw(htobe(v));
 101 }
 102
 103 template <typename T>
 104 inline void
 105 Packet::setLE(T v)
 106 {
 107     setRaw(htole(v));
 108 }
 109
 110 template <typename T>
 111 inline void
 112 Packet::set(T v, ByteOrder endian)
 113 {
 114     switch (endian) {
 115       case ByteOrder::big:
 116         return setBE<T>(v);
 117
 118       case ByteOrder::little:
 119         return setLE<T>(v);
 120
 121       default:
 122         panic("Illegal byte order in Packet::set()\n");
 123     };
 124 }
 125
 126 #endif //__MEM_PACKET_ACCESS_HH__