abstract_mem.hh revision 2391
12381SN/A/* 212780Snikos.nikoleris@arm.com * Copyright (c) 2001-2005 The Regents of The University of Michigan 38711SN/A * All rights reserved. 48711SN/A * 58711SN/A * Redistribution and use in source and binary forms, with or without 68711SN/A * modification, are permitted provided that the following conditions are 78711SN/A * met: redistributions of source code must retain the above copyright 88711SN/A * notice, this list of conditions and the following disclaimer; 98711SN/A * redistributions in binary form must reproduce the above copyright 108711SN/A * notice, this list of conditions and the following disclaimer in the 118711SN/A * documentation and/or other materials provided with the distribution; 128711SN/A * neither the name of the copyright holders nor the names of its 138711SN/A * contributors may be used to endorse or promote products derived from 142381SN/A * this software without specific prior written permission. 152381SN/A * 162381SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172381SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182381SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192381SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202381SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212381SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222381SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232381SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242381SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252381SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262381SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272381SN/A */ 282381SN/A 292381SN/A/* @file 302381SN/A */ 312381SN/A 322381SN/A#ifndef __PHYSICAL_MEMORY_HH__ 332381SN/A#define __PHYSICAL_MEMORY_HH__ 342381SN/A 352381SN/A#include "base/range.hh" 362381SN/A#include "mem/memory.hh" 372381SN/A 382381SN/A// 392665SN/A// Functional model for a contiguous block of physical memory. (i.e. RAM) 402665SN/A// 412772SN/Aclass PhysicalMemory : public Memory 428715SN/A{ 438922SN/A private: 442381SN/A // prevent copying of a MainMemory object 452381SN/A PhysicalMemory(const PhysicalMemory &specmem); 462381SN/A const PhysicalMemory &operator=(const PhysicalMemory &specmem); 472982SN/A 4810405Sandreas.hansson@arm.com protected: 492381SN/A Addr base_addr; 502381SN/A Addr pmem_size; 5110405Sandreas.hansson@arm.com uint8_t *pmem_addr; 5210405Sandreas.hansson@arm.com int page_ptr; 532381SN/A 549291SN/A public: 5511168Sandreas.hansson@arm.com Addr new_page(); 562381SN/A uint64_t size() { return pmem_size; } 579235SN/A 586215SN/A public: 592381SN/A PhysicalMemory(const std::string &n); 6010888Sandreas.hansson@arm.com virtual ~PhysicalMemory(); 6110405Sandreas.hansson@arm.com 629712SN/A protected: 632381SN/A // error handling for prot_* functions 649036SN/A void prot_access_error(Addr addr, int size, const std::string &func); 6510405Sandreas.hansson@arm.com 6610405Sandreas.hansson@arm.com public: 6710405Sandreas.hansson@arm.com 6810405Sandreas.hansson@arm.com // Read/Write arbitrary amounts of data to simulated memory space 699036SN/A virtual void prot_read(Addr addr, uint8_t *p, int size); 7010405Sandreas.hansson@arm.com virtual void prot_write(Addr addr, const uint8_t *p, int size); 719036SN/A virtual void prot_memset(Addr addr, uint8_t val, int size); 729036SN/A 7310405Sandreas.hansson@arm.com // fast back-door memory access for vtophys(), remote gdb, etc. 742381SN/A uint64_t phys_read_qword(Addr addr) const; 759031SN/A 769036SN/A public: 772381SN/A virtual void serialize(std::ostream &os); 789091SN/A virtual void unserialize(Checkpoint *cp, const std::string §ion); 7910405Sandreas.hansson@arm.com}; 8010405Sandreas.hansson@arm.com 8110405Sandreas.hansson@arm.comPhysicalMemory::phys_read_qword(Addr addr) const 8210405Sandreas.hansson@arm.com{ 8310405Sandreas.hansson@arm.com if (addr + sizeof(uint64_t) > pmem_size) 8410405Sandreas.hansson@arm.com return 0; 859093SN/A 869093SN/A return *(uint64_t *)(pmem_addr + addr); 8710405Sandreas.hansson@arm.com} 8810405Sandreas.hansson@arm.com 8910405Sandreas.hansson@arm.com 9010405Sandreas.hansson@arm.com#endif //__PHYSICAL_MEMORY_HH__ 919091SN/A