RubySlicc_Util.hh revision 11025 
1/*
2 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/*
30 * These are the functions that exported to slicc from ruby.
31 */
32
33#ifndef __MEM_RUBY_SLICC_INTERFACE_RUBYSLICCUTIL_HH__
34#define __MEM_RUBY_SLICC_INTERFACE_RUBYSLICCUTIL_HH__
35
36#include <cassert>
37
38#include "debug/RubySlicc.hh"
39#include "mem/packet.hh"
40#include "mem/ruby/common/Address.hh"
41#include "mem/ruby/common/DataBlock.hh"
42#include "mem/ruby/common/TypeDefines.hh"
43
44inline Cycles zero_time() { return Cycles(0); }
45
46inline NodeID
47intToID(int nodenum)
48{
49    NodeID id = nodenum;
50    return id;
51}
52
53inline int
54IDToInt(NodeID id)
55{
56    int nodenum = id;
57    return nodenum;
58}
59
60inline int
61addressToInt(Addr addr)
62{
63    assert(!(addr & 0xffffffff00000000));
64    return addr;
65}
66
67inline int
68mod(int val, int mod)
69{
70    return val % mod;
71}
72
73inline int max_tokens()
74{
75  return 1024;
76}
77
78/**
79 * This function accepts an address, a data block and a packet. If the address
80 * range for the data block contains the address which the packet needs to
81 * read, then the data from the data block is written to the packet. True is
82 * returned if the data block was read, otherwise false is returned.
83 */
84inline bool
85testAndRead(Addr addr, DataBlock& blk, Packet *pkt)
86{
87    Addr pktLineAddr = makeLineAddress(pkt->getAddr());
88    Addr lineAddr = makeLineAddress(addr);
89
90    if (pktLineAddr == lineAddr) {
91        uint8_t *data = pkt->getPtr<uint8_t>();
92        unsigned int size_in_bytes = pkt->getSize();
93        unsigned startByte = pkt->getAddr() - lineAddr;
94
95        for (unsigned i = 0; i < size_in_bytes; ++i) {
96            data[i] = blk.getByte(i + startByte);
97        }
98        return true;
99    }
100    return false;
101}
102
103/**
104 * This function accepts an address, a data block and a packet. If the address
105 * range for the data block contains the address which the packet needs to
106 * write, then the data from the packet is written to the data block. True is
107 * returned if the data block was written, otherwise false is returned.
108 */
109inline bool
110testAndWrite(Addr addr, DataBlock& blk, Packet *pkt)
111{
112    Addr pktLineAddr = makeLineAddress(pkt->getAddr());
113    Addr lineAddr = makeLineAddress(addr);
114
115    if (pktLineAddr == lineAddr) {
116        const uint8_t *data = pkt->getConstPtr<uint8_t>();
117        unsigned int size_in_bytes = pkt->getSize();
118        unsigned startByte = pkt->getAddr() - lineAddr;
119
120        for (unsigned i = 0; i < size_in_bytes; ++i) {
121            blk.setByte(i + startByte, data[i]);
122        }
123        return true;
124    }
125    return false;
126}
127
128#endif // __MEM_RUBY_SLICC_INTERFACE_RUBYSLICCUTIL_HH__
129