0c2c7171a8
memory access (I think because we're deallocating our one and only
CpuRequest object).
base/loader/aout_object.cc:
base/loader/ecoff_object.cc:
base/loader/elf_object.cc:
Add flag to force allocation of new pages on data writes.
cpu/simple/cpu.cc:
Several minor fixes.
Switch to atomic mode for now.
mem/physical.hh:
Don't copy the packet to the response event, just keep a reference
to the original.
mem/translating_port.cc:
mem/translating_port.hh:
Add parameter to writeBlobFunctional() to force allocation of
unallocated pages on writes.
--HG--
extra : convert_revision : 05cb31c7b0047b492dcfa0d12ddee690ef762b44
144 lines
4.1 KiB
C++
144 lines
4.1 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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/* @file
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*/
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#ifndef __PHYSICAL_MEMORY_HH__
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#define __PHYSICAL_MEMORY_HH__
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#include "base/range.hh"
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#include "mem/memory.hh"
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#include "mem/packet.hh"
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#include "mem/port.hh"
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#include "sim/eventq.hh"
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#include <map>
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#include <string>
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//
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// Functional model for a contiguous block of physical memory. (i.e. RAM)
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//
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class PhysicalMemory : public Memory
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{
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class MemoryPort : public Port
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{
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PhysicalMemory *memory;
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public:
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MemoryPort(PhysicalMemory *_memory);
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protected:
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virtual bool recvTiming(Packet &pkt);
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virtual Tick recvAtomic(Packet &pkt);
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virtual void recvFunctional(Packet &pkt);
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virtual void recvStatusChange(Status status);
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virtual void getDeviceAddressRanges(AddrRangeList &range_list,
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bool &owner);
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virtual int deviceBlockSize();
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};
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std::map<std::string, MemoryPort*> memoryPortList;
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virtual Port * getPort(const char *if_name);
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virtual Port * addPort(std::string portName);
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int numPorts;
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int lat;
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struct MemResponseEvent : public Event
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{
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Packet &pkt;
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MemoryPort *memoryPort;
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MemResponseEvent(Packet &pkt, MemoryPort *memoryPort);
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void process();
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const char *description();
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};
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private:
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// prevent copying of a MainMemory object
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PhysicalMemory(const PhysicalMemory &specmem);
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const PhysicalMemory &operator=(const PhysicalMemory &specmem);
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protected:
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Addr base_addr;
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Addr pmem_size;
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uint8_t *pmem_addr;
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int page_ptr;
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public:
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Addr new_page();
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uint64_t size() { return pmem_size; }
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public:
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PhysicalMemory(const std::string &n);
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virtual ~PhysicalMemory();
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protected:
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// error handling for prot_* functions
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void prot_access_error(Addr addr, int size, Command func);
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public:
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int deviceBlockSize();
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void prot_memset(Addr addr, uint8_t val, int size);
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// fast back-door memory access for vtophys(), remote gdb, etc.
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// uint64_t phys_read_qword(Addr addr) const;
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private:
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bool doTimingAccess(Packet &pkt, MemoryPort *memoryPort);
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Tick doAtomicAccess(Packet &pkt);
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void doFunctionalAccess(Packet &pkt);
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void recvStatusChange(Port::Status status);
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public:
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virtual void serialize(std::ostream &os);
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virtual void unserialize(Checkpoint *cp, const std::string §ion);
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};
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/*uint64_t
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PhysicalMemory::phys_read_qword(Addr addr) const
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{
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if (addr + sizeof(uint64_t) > pmem_size)
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return 0;
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return *(uint64_t *)(pmem_addr + addr);
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}*/
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#endif //__PHYSICAL_MEMORY_HH__
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