packet_access.hh revision 13347:4085b1fa2288 
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#include "arch/isa_traits.hh"
46#include "mem/packet.hh"
47#include "sim/byteswap.hh"
48
49#ifndef __MEM_PACKET_ACCESS_HH__
50#define __MEM_PACKET_ACCESS_HH__
51
52template <typename T>
53inline T
54Packet::getRaw() const
55{
56    assert(flags.isSet(STATIC_DATA|DYNAMIC_DATA));
57    assert(sizeof(T) <= size);
58    return *(T*)data;
59}
60
61template <typename T>
62inline void
63Packet::setRaw(T v)
64{
65    assert(flags.isSet(STATIC_DATA|DYNAMIC_DATA));
66    assert(sizeof(T) <= size);
67    *(T*)data = v;
68}
69
70
71template <typename T>
72inline T
73Packet::getBE() const
74{
75    return betoh(getRaw<T>());
76}
77
78template <typename T>
79inline T
80Packet::getLE() const
81{
82    return letoh(getRaw<T>());
83}
84
85template <typename T>
86inline T
87Packet::get(ByteOrder endian) const
88{
89    switch (endian) {
90      case BigEndianByteOrder:
91        return getBE<T>();
92
93      case LittleEndianByteOrder:
94        return getLE<T>();
95
96      default:
97        panic("Illegal byte order in Packet::get()\n");
98    };
99}
100
101#if THE_ISA != NULL_ISA
102template <typename T>
103inline T
104Packet::get() const
105{
106    return TheISA::gtoh(getRaw<T>());
107}
108#endif
109
110template <typename T>
111inline void
112Packet::setBE(T v)
113{
114    setRaw(htobe(v));
115}
116
117template <typename T>
118inline void
119Packet::setLE(T v)
120{
121    setRaw(htole(v));
122}
123
124template <typename T>
125inline void
126Packet::set(T v, ByteOrder endian)
127{
128    switch (endian) {
129      case BigEndianByteOrder:
130        return setBE<T>(v);
131
132      case LittleEndianByteOrder:
133        return setLE<T>(v);
134
135      default:
136        panic("Illegal byte order in Packet::set()\n");
137    };
138}
139
140#if THE_ISA != NULL_ISA
141template <typename T>
142inline void
143Packet::set(T v)
144{
145    setRaw(TheISA::htog(v));
146}
147#endif
148
149#endif //__MEM_PACKET_ACCESS_HH__
150