se_translating_port_proxy.cc revision 2404 
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 "base/chunk_generator.hh"
31#include "mem/port.hh"
32#include "mem/translating_port.hh"
33#include "mem/page_table.hh"
34
35TranslatingPort::TranslatingPort(Port *_port, PageTable *p_table)
36    : port(_port), pTable(p_table)
37{ }
38
39TranslatingPort::~TranslatingPort()
40{ }
41
42Fault
43TranslatingPort::readBlobFunctional(Addr addr, uint8_t *p, int size)
44{
45    Addr paddr;
46    int prevSize = 0;
47
48    for (ChunkGenerator gen(addr, size, VMPageSize); !gen.done(); gen.next()) {
49
50       if (!pTable->translate(gen.addr(),paddr))
51           return Machine_Check_Fault;
52
53       port->readBlobFunctional(paddr, p + prevSize, gen.size());
54       prevSize += gen.size();
55    }
56
57    return No_Fault;
58}
59
60Fault
61TranslatingPort::writeBlobFunctional(Addr addr, uint8_t *p, int size)
62{
63    Addr paddr;
64    int prevSize = 0;
65
66    for (ChunkGenerator gen(addr, size, VMPageSize); !gen.done(); gen.next()) {
67
68       if (!pTable->translate(gen.addr(),paddr))
69           return Machine_Check_Fault;
70
71       port->writeBlobFunctional(paddr, p + prevSize, gen.size());
72       prevSize += gen.size();
73    }
74
75    return No_Fault;
76}
77
78Fault
79TranslatingPort::memsetBlobFunctional(Addr addr, uint8_t val, int size)
80{
81    Addr paddr;
82
83    for (ChunkGenerator gen(addr, size, VMPageSize); !gen.done(); gen.next()) {
84
85       if (!pTable->translate(gen.addr(),paddr))
86           return Machine_Check_Fault;
87
88       port->memsetBlobFunctional(paddr, val, gen.size());
89    }
90
91    return No_Fault;
92}
93
94Fault
95TranslatingPort::writeStringFunctional(Addr addr, const char *str)
96{
97    Addr paddr,vaddr;
98    uint8_t c;
99
100    vaddr = addr;
101
102    do {
103        c = *str++;
104        if (!pTable->translate(vaddr++,paddr))
105            return Machine_Check_Fault;
106
107        port->writeBlobFunctional(paddr, &c, 1);
108    } while (c);
109
110    return No_Fault;
111}
112
113Fault
114TranslatingPort::readStringFunctional(std::string &str, Addr addr)
115{
116    Addr paddr,vaddr;
117    uint8_t c;
118
119    vaddr = addr;
120
121    do {
122        if (!pTable->translate(vaddr++,paddr))
123            return Machine_Check_Fault;
124
125        port->readBlobFunctional(paddr, &c, 1);
126        str += c;
127    } while (c);
128
129    return No_Fault;
130}
131
132