00be4e8510
cpu/simple/cpu.cc:
Thanks to Ali I found the chunk generator, although I still seem to be duplicating some code becuase the only difference between readBlob and writeBlob is the command in the packet. Perhaps an access function with the command as a param would help with the duplication (sendBlob that takes a cmd (maybe).
mem/translating_port.cc:
Using the chunck generator to break it up to be in page size chunks
--HG--
extra : convert_revision : cc2e4e60c76098655e469f81c89d2c7438350fdb
132 lines
3.6 KiB
C++
132 lines
3.6 KiB
C++
/*
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* Copyright (c) 2001-2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <string>
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#include "base/chunk_generator.hh"
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#include "mem/port.hh"
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#include "mem/translating_port.hh"
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#include "mem/page_table.hh"
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TranslatingPort::TranslatingPort(Port *_port, PageTable *p_table)
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: port(_port), pTable(p_table)
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{ }
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TranslatingPort::~TranslatingPort()
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{ }
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Fault
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TranslatingPort::readBlobFunctional(Addr addr, uint8_t *p, int size)
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{
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Addr paddr;
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int prevSize = 0;
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for (ChunkGenerator gen(addr, size, VMPageSize); !gen.done(); gen.next()) {
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if (!pTable->translate(gen.addr(),paddr))
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return Machine_Check_Fault;
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port->readBlobFunctional(paddr, p + prevSize, gen.size());
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prevSize += gen.size();
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}
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return No_Fault;
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}
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Fault
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TranslatingPort::writeBlobFunctional(Addr addr, uint8_t *p, int size)
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{
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Addr paddr;
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int prevSize = 0;
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for (ChunkGenerator gen(addr, size, VMPageSize); !gen.done(); gen.next()) {
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if (!pTable->translate(gen.addr(),paddr))
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return Machine_Check_Fault;
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port->writeBlobFunctional(paddr, p + prevSize, gen.size());
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prevSize += gen.size();
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}
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return No_Fault;
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}
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Fault
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TranslatingPort::memsetBlobFunctional(Addr addr, uint8_t val, int size)
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{
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Addr paddr;
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for (ChunkGenerator gen(addr, size, VMPageSize); !gen.done(); gen.next()) {
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if (!pTable->translate(gen.addr(),paddr))
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return Machine_Check_Fault;
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port->memsetBlobFunctional(paddr, val, gen.size());
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}
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return No_Fault;
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}
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Fault
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TranslatingPort::writeStringFunctional(Addr addr, const char *str)
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{
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Addr paddr,vaddr;
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uint8_t c;
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vaddr = addr;
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do {
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c = *str++;
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if (!pTable->translate(vaddr++,paddr))
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return Machine_Check_Fault;
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port->writeBlobFunctional(paddr, &c, 1);
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} while (c);
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return No_Fault;
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}
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Fault
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TranslatingPort::readStringFunctional(std::string &str, Addr addr)
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{
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Addr paddr,vaddr;
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uint8_t c;
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vaddr = addr;
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do {
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if (!pTable->translate(vaddr++,paddr))
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return Machine_Check_Fault;
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port->readBlobFunctional(paddr, &c, 1);
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str += c;
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} while (c);
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return No_Fault;
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}
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