2 * Copyright (c) 2011 ARM Limited
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.
14 * Copyright (c) 2001-2005 The Regents of The University of Michigan
15 * All rights reserved.
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.
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.
40 * Authors: Ron Dreslinski
47 #include "arch/isa_traits.hh"
48 #include "base/chunk_generator.hh"
49 #include "config/the_isa.hh"
50 #include "mem/page_table.hh"
51 #include "mem/se_translating_port_proxy.hh"
52 #include "sim/process.hh"
53 #include "sim/system.hh"
55 using namespace TheISA
;
57 SETranslatingPortProxy::SETranslatingPortProxy(MasterPort
& port
, Process
*p
,
59 : PortProxy(port
, p
->system
->cacheLineSize()), pTable(p
->pTable
),
60 process(p
), allocating(alloc
)
63 SETranslatingPortProxy::~SETranslatingPortProxy()
67 SETranslatingPortProxy::tryReadBlob(Addr addr
, uint8_t *p
, int size
) const
71 for (ChunkGenerator
gen(addr
, size
, PageBytes
); !gen
.done(); gen
.next()) {
74 if (!pTable
->translate(gen
.addr(),paddr
))
77 PortProxy::readBlob(paddr
, p
+ prevSize
, gen
.size());
78 prevSize
+= gen
.size();
85 SETranslatingPortProxy::readBlob(Addr addr
, uint8_t *p
, int size
) const
87 if (!tryReadBlob(addr
, p
, size
))
88 fatal("readBlob(0x%x, ...) failed", addr
);
93 SETranslatingPortProxy::tryWriteBlob(Addr addr
, uint8_t *p
, int size
) const
97 for (ChunkGenerator
gen(addr
, size
, PageBytes
); !gen
.done(); gen
.next()) {
100 if (!pTable
->translate(gen
.addr(), paddr
)) {
101 if (allocating
== Always
) {
102 process
->allocateMem(roundDown(gen
.addr(), PageBytes
),
104 } else if (allocating
== NextPage
) {
105 // check if we've accessed the next page on the stack
106 if (!process
->fixupStackFault(gen
.addr()))
107 panic("Page table fault when accessing virtual address %#x "
108 "during functional write\n", gen
.addr());
112 pTable
->translate(gen
.addr(), paddr
);
115 PortProxy::writeBlob(paddr
, p
+ prevSize
, gen
.size());
116 prevSize
+= gen
.size();
124 SETranslatingPortProxy::writeBlob(Addr addr
, uint8_t *p
, int size
) const
126 if (!tryWriteBlob(addr
, p
, size
))
127 fatal("writeBlob(0x%x, ...) failed", addr
);
131 SETranslatingPortProxy::tryMemsetBlob(Addr addr
, uint8_t val
, int size
) const
133 for (ChunkGenerator
gen(addr
, size
, PageBytes
); !gen
.done(); gen
.next()) {
136 if (!pTable
->translate(gen
.addr(), paddr
)) {
137 if (allocating
== Always
) {
138 process
->allocateMem(roundDown(gen
.addr(), PageBytes
),
140 pTable
->translate(gen
.addr(), paddr
);
146 PortProxy::memsetBlob(paddr
, val
, gen
.size());
153 SETranslatingPortProxy::memsetBlob(Addr addr
, uint8_t val
, int size
) const
155 if (!tryMemsetBlob(addr
, val
, size
))
156 fatal("memsetBlob(0x%x, ...) failed", addr
);
161 SETranslatingPortProxy::tryWriteString(Addr addr
, const char *str
) const
171 if (!pTable
->translate(vaddr
++, paddr
))
174 PortProxy::writeBlob(paddr
, &c
, 1);
181 SETranslatingPortProxy::writeString(Addr addr
, const char *str
) const
183 if (!tryWriteString(addr
, str
))
184 fatal("writeString(0x%x, ...) failed", addr
);
188 SETranslatingPortProxy::tryReadString(std::string
&str
, Addr addr
) const
197 if (!pTable
->translate(vaddr
++, paddr
))
200 PortProxy::readBlob(paddr
, &c
, 1);
211 SETranslatingPortProxy::readString(std::string
&str
, Addr addr
) const
213 if (!tryReadString(str
, addr
))
214 fatal("readString(0x%x, ...) failed", addr
);