se_translating_port_proxy.hh revision 8706:b1838faf3bcc 
1/*
2 * Copyright (c) 2011 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) 2001-2005 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: Ron Dreslinski
41 *          Ali Saidi
42 *          Andreas Hansson
43 */
44
45#ifndef __MEM_SE_TRANSLATING_PORT_PROXY_HH__
46#define __MEM_SE_TRANSLATING_PORT_PROXY_HH__
47
48#include "mem/page_table.hh"
49#include "mem/port_proxy.hh"
50#include "sim/process.hh"
51
52/**
53 * @file
54 * TranslatingPortProxy Object Declaration for SE.
55 *
56 * Port proxies are used when non structural entities need access to
57 * the memory system. Proxy objects replace the previous
58 * FunctionalPort, TranslatingPort and VirtualPort objects, which
59 * provided the same functionality as the proxies, but were instances
60 * of ports not corresponding to real structural ports of the
61 * simulated system. Via the port proxies all the accesses go through
62 * an actual port and thus are transparent to a potentially
63 * distributed memory and automatically adhere to the memory map of
64 * the system.
65 */
66class SETranslatingPortProxy : public PortProxy
67{
68
69  public:
70    enum AllocType {
71        Always,
72        Never,
73        NextPage
74    };
75
76  private:
77    PageTable *pTable;
78    Process *process;
79    AllocType allocating;
80
81  public:
82    SETranslatingPortProxy(Port& port, Process* p, AllocType alloc);
83    virtual ~SETranslatingPortProxy();
84
85    bool tryReadBlob(Addr addr, uint8_t *p, int size);
86    bool tryWriteBlob(Addr addr, uint8_t *p, int size);
87    bool tryMemsetBlob(Addr addr, uint8_t val, int size);
88    bool tryWriteString(Addr addr, const char *str);
89    bool tryReadString(std::string &str, Addr addr);
90
91    virtual void readBlob(Addr addr, uint8_t *p, int size);
92    virtual void writeBlob(Addr addr, uint8_t *p, int size);
93    virtual void memsetBlob(Addr addr, uint8_t val, int size);
94
95    void writeString(Addr addr, const char *str);
96    void readString(std::string &str, Addr addr);
97};
98
99#endif // __MEM_SE_TRANSLATING_PORT_PROXY_HH__
100