se_translating_port_proxy.cc revision 2403 
1/*
2 * Copyright (c) 2001-2005 The Regents of The University of Michigan
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#include <string>
30#include "mem/port.hh"
31#include "mem/translating_port.hh"
32#include "mem/page_table.hh"
33
34TranslatingPort::TranslatingPort(Port *_port, PageTable *p_table)
35    : port(_port), pTable(p_table)
36{ }
37
38TranslatingPort::~TranslatingPort()
39{ }
40
41Fault
42TranslatingPort::readBlobFunctional(Addr addr, uint8_t *p, int size)
43{
44    Addr paddr;
45
46    //@todo Break up things larger than a page size
47    pTable->page_check(addr, size);
48
49
50    if (!pTable->translate(addr,paddr))
51        return Machine_Check_Fault;
52
53    port->readBlobFunctional(paddr, p, size);
54    return No_Fault;
55}
56
57Fault
58TranslatingPort::writeBlobFunctional(Addr addr, uint8_t *p, int size)
59{
60    Addr paddr;
61
62    //@todo Break up things larger than a page size
63    pTable->page_check(addr, size);
64
65    if (!pTable->translate(addr,paddr))
66        return Machine_Check_Fault;
67
68    port->writeBlobFunctional(paddr, p, size);
69    return No_Fault;
70}
71
72Fault
73TranslatingPort::memsetBlobFunctional(Addr addr, uint8_t val, int size)
74{
75    Addr paddr;
76
77    //@todo Break up things larger than a page size
78    //Use the Stever breakup code
79    pTable->page_check(addr, size);
80
81    if (!pTable->translate(addr,paddr))
82        return Machine_Check_Fault;
83
84    port->memsetBlobFunctional(paddr, val, size);
85    return No_Fault;
86}
87
88Fault
89TranslatingPort::writeStringFunctional(Addr addr, const char *str)
90{
91    Addr paddr,vaddr;
92    uint8_t c;
93
94    vaddr = addr;
95
96    do {
97        c = *str++;
98        if (!pTable->translate(vaddr++,paddr))
99            return Machine_Check_Fault;
100
101        port->writeBlobFunctional(paddr, &c, 1);
102    } while (c);
103
104    return No_Fault;
105}
106
107Fault
108TranslatingPort::readStringFunctional(std::string &str, Addr addr)
109{
110    Addr paddr,vaddr;
111    uint8_t c;
112
113    vaddr = addr;
114
115    do {
116        if (!pTable->translate(vaddr++,paddr))
117            return Machine_Check_Fault;
118
119        port->readBlobFunctional(paddr, &c, 1);
120        str += c;
121    } while (c);
122
123    return No_Fault;
124}
125
126