physical.cc revision 10482
12391SN/A/* 210482Sandreas.hansson@arm.com * Copyright (c) 2012, 2014 ARM Limited 37733SAli.Saidi@ARM.com * All rights reserved 47733SAli.Saidi@ARM.com * 57733SAli.Saidi@ARM.com * The license below extends only to copyright in the software and shall 67733SAli.Saidi@ARM.com * not be construed as granting a license to any other intellectual 77733SAli.Saidi@ARM.com * property including but not limited to intellectual property relating 87733SAli.Saidi@ARM.com * to a hardware implementation of the functionality of the software 97733SAli.Saidi@ARM.com * licensed hereunder. You may use the software subject to the license 107733SAli.Saidi@ARM.com * terms below provided that you ensure that this notice is replicated 117733SAli.Saidi@ARM.com * unmodified and in its entirety in all distributions of the software, 127733SAli.Saidi@ARM.com * modified or unmodified, in source code or in binary form. 137733SAli.Saidi@ARM.com * 142391SN/A * Redistribution and use in source and binary forms, with or without 152391SN/A * modification, are permitted provided that the following conditions are 162391SN/A * met: redistributions of source code must retain the above copyright 172391SN/A * notice, this list of conditions and the following disclaimer; 182391SN/A * redistributions in binary form must reproduce the above copyright 192391SN/A * notice, this list of conditions and the following disclaimer in the 202391SN/A * documentation and/or other materials provided with the distribution; 212391SN/A * neither the name of the copyright holders nor the names of its 222391SN/A * contributors may be used to endorse or promote products derived from 232391SN/A * this software without specific prior written permission. 242391SN/A * 252391SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 262391SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 272391SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 282391SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 292391SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 302391SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 312391SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 322391SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 332391SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 342391SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 352391SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 362665Ssaidi@eecs.umich.edu * 378931Sandreas.hansson@arm.com * Authors: Andreas Hansson 382391SN/A */ 392391SN/A 409293Sandreas.hansson@arm.com#include <sys/mman.h> 419293Sandreas.hansson@arm.com#include <sys/types.h> 429293Sandreas.hansson@arm.com#include <sys/user.h> 439293Sandreas.hansson@arm.com#include <fcntl.h> 449293Sandreas.hansson@arm.com#include <unistd.h> 459293Sandreas.hansson@arm.com#include <zlib.h> 469293Sandreas.hansson@arm.com 479293Sandreas.hansson@arm.com#include <cerrno> 489293Sandreas.hansson@arm.com#include <climits> 499293Sandreas.hansson@arm.com#include <cstdio> 509293Sandreas.hansson@arm.com#include <iostream> 519293Sandreas.hansson@arm.com#include <string> 529293Sandreas.hansson@arm.com 539356Snilay@cs.wisc.edu#include "base/trace.hh" 5410405Sandreas.hansson@arm.com#include "debug/AddrRanges.hh" 559293Sandreas.hansson@arm.com#include "debug/Checkpoint.hh" 569293Sandreas.hansson@arm.com#include "mem/abstract_mem.hh" 572394SN/A#include "mem/physical.hh" 582394SN/A 592391SN/Ausing namespace std; 602391SN/A 619293Sandreas.hansson@arm.comPhysicalMemory::PhysicalMemory(const string& _name, 629293Sandreas.hansson@arm.com const vector<AbstractMemory*>& _memories) : 639293Sandreas.hansson@arm.com _name(_name), size(0) 642391SN/A{ 659293Sandreas.hansson@arm.com // add the memories from the system to the address map as 669293Sandreas.hansson@arm.com // appropriate 6710482Sandreas.hansson@arm.com for (const auto& m : _memories) { 688931Sandreas.hansson@arm.com // only add the memory if it is part of the global address map 6910482Sandreas.hansson@arm.com if (m->isInAddrMap()) { 7010482Sandreas.hansson@arm.com memories.push_back(m); 712391SN/A 728931Sandreas.hansson@arm.com // calculate the total size once and for all 7310482Sandreas.hansson@arm.com size += m->size(); 748931Sandreas.hansson@arm.com 758931Sandreas.hansson@arm.com // add the range to our interval tree and make sure it does not 768931Sandreas.hansson@arm.com // intersect an existing range 7710482Sandreas.hansson@arm.com fatal_if(addrMap.insert(m->getAddrRange(), m) == addrMap.end(), 7810482Sandreas.hansson@arm.com "Memory address range for %s is overlapping\n", 7910482Sandreas.hansson@arm.com m->name()); 809293Sandreas.hansson@arm.com } else { 819293Sandreas.hansson@arm.com // this type of memory is used e.g. as reference memory by 829293Sandreas.hansson@arm.com // Ruby, and they also needs a backing store, but should 839293Sandreas.hansson@arm.com // not be part of the global address map 8410482Sandreas.hansson@arm.com DPRINTF(AddrRanges, 8510482Sandreas.hansson@arm.com "Skipping memory %s that is not in global address map\n", 8610482Sandreas.hansson@arm.com m->name()); 8710482Sandreas.hansson@arm.com 8810482Sandreas.hansson@arm.com // sanity check 8910482Sandreas.hansson@arm.com fatal_if(m->getAddrRange().interleaved(), 9010482Sandreas.hansson@arm.com "Memory %s that is not in the global address map cannot " 9110482Sandreas.hansson@arm.com "be interleaved\n", m->name()); 929293Sandreas.hansson@arm.com 939293Sandreas.hansson@arm.com // simply do it independently, also note that this kind of 949293Sandreas.hansson@arm.com // memories are allowed to overlap in the logic address 959293Sandreas.hansson@arm.com // map 9610482Sandreas.hansson@arm.com vector<AbstractMemory*> unmapped_mems{m}; 9710482Sandreas.hansson@arm.com createBackingStore(m->getAddrRange(), unmapped_mems); 988931Sandreas.hansson@arm.com } 999293Sandreas.hansson@arm.com } 1009293Sandreas.hansson@arm.com 10110070Sandreas.hansson@arm.com // iterate over the increasing addresses and chunks of contiguous 10210070Sandreas.hansson@arm.com // space to be mapped to backing store, create it and inform the 10310070Sandreas.hansson@arm.com // memories 1049565Sandreas.hansson@arm.com vector<AddrRange> intlv_ranges; 1059293Sandreas.hansson@arm.com vector<AbstractMemory*> curr_memories; 10610482Sandreas.hansson@arm.com for (const auto& r : addrMap) { 1079293Sandreas.hansson@arm.com // simply skip past all memories that are null and hence do 1089293Sandreas.hansson@arm.com // not need any backing store 10910482Sandreas.hansson@arm.com if (!r.second->isNull()) { 1109565Sandreas.hansson@arm.com // if the range is interleaved then save it for now 11110482Sandreas.hansson@arm.com if (r.first.interleaved()) { 1129565Sandreas.hansson@arm.com // if we already got interleaved ranges that are not 1139565Sandreas.hansson@arm.com // part of the same range, then first do a merge 1149565Sandreas.hansson@arm.com // before we add the new one 1159565Sandreas.hansson@arm.com if (!intlv_ranges.empty() && 11610482Sandreas.hansson@arm.com !intlv_ranges.back().mergesWith(r.first)) { 1179565Sandreas.hansson@arm.com AddrRange merged_range(intlv_ranges); 1189565Sandreas.hansson@arm.com createBackingStore(merged_range, curr_memories); 1199565Sandreas.hansson@arm.com intlv_ranges.clear(); 1209565Sandreas.hansson@arm.com curr_memories.clear(); 1219565Sandreas.hansson@arm.com } 12210482Sandreas.hansson@arm.com intlv_ranges.push_back(r.first); 12310482Sandreas.hansson@arm.com curr_memories.push_back(r.second); 1249565Sandreas.hansson@arm.com } else { 12510482Sandreas.hansson@arm.com vector<AbstractMemory*> single_memory{r.second}; 12610482Sandreas.hansson@arm.com createBackingStore(r.first, single_memory); 1279565Sandreas.hansson@arm.com } 1289293Sandreas.hansson@arm.com } 1299293Sandreas.hansson@arm.com } 1309565Sandreas.hansson@arm.com 1319565Sandreas.hansson@arm.com // if there is still interleaved ranges waiting to be merged, go 1329565Sandreas.hansson@arm.com // ahead and do it 1339565Sandreas.hansson@arm.com if (!intlv_ranges.empty()) { 1349565Sandreas.hansson@arm.com AddrRange merged_range(intlv_ranges); 1359565Sandreas.hansson@arm.com createBackingStore(merged_range, curr_memories); 1369565Sandreas.hansson@arm.com } 1379293Sandreas.hansson@arm.com} 1389293Sandreas.hansson@arm.com 1399293Sandreas.hansson@arm.comvoid 1409293Sandreas.hansson@arm.comPhysicalMemory::createBackingStore(AddrRange range, 1419293Sandreas.hansson@arm.com const vector<AbstractMemory*>& _memories) 1429293Sandreas.hansson@arm.com{ 14310482Sandreas.hansson@arm.com panic_if(range.interleaved(), 14410482Sandreas.hansson@arm.com "Cannot create backing store for interleaved range %s\n", 1459411Sandreas.hansson@arm.com range.to_string()); 1469411Sandreas.hansson@arm.com 1479293Sandreas.hansson@arm.com // perform the actual mmap 14810405Sandreas.hansson@arm.com DPRINTF(AddrRanges, "Creating backing store for range %s with size %d\n", 1499411Sandreas.hansson@arm.com range.to_string(), range.size()); 1509293Sandreas.hansson@arm.com int map_flags = MAP_ANON | MAP_PRIVATE; 1519293Sandreas.hansson@arm.com uint8_t* pmem = (uint8_t*) mmap(NULL, range.size(), 1529293Sandreas.hansson@arm.com PROT_READ | PROT_WRITE, 1539293Sandreas.hansson@arm.com map_flags, -1, 0); 1549293Sandreas.hansson@arm.com 1559293Sandreas.hansson@arm.com if (pmem == (uint8_t*) MAP_FAILED) { 1569293Sandreas.hansson@arm.com perror("mmap"); 1579405Sandreas.hansson@arm.com fatal("Could not mmap %d bytes for range %s!\n", range.size(), 1589405Sandreas.hansson@arm.com range.to_string()); 1599293Sandreas.hansson@arm.com } 1609293Sandreas.hansson@arm.com 1619293Sandreas.hansson@arm.com // remember this backing store so we can checkpoint it and unmap 1629293Sandreas.hansson@arm.com // it appropriately 1639293Sandreas.hansson@arm.com backingStore.push_back(make_pair(range, pmem)); 1649293Sandreas.hansson@arm.com 16510070Sandreas.hansson@arm.com // point the memories to their backing store 16610482Sandreas.hansson@arm.com for (const auto& m : _memories) { 16710405Sandreas.hansson@arm.com DPRINTF(AddrRanges, "Mapping memory %s to backing store\n", 16810482Sandreas.hansson@arm.com m->name()); 16910482Sandreas.hansson@arm.com m->setBackingStore(pmem); 1708931Sandreas.hansson@arm.com } 1718931Sandreas.hansson@arm.com} 1728931Sandreas.hansson@arm.com 1739293Sandreas.hansson@arm.comPhysicalMemory::~PhysicalMemory() 1749293Sandreas.hansson@arm.com{ 1759293Sandreas.hansson@arm.com // unmap the backing store 17610482Sandreas.hansson@arm.com for (auto& s : backingStore) 17710482Sandreas.hansson@arm.com munmap((char*)s.second, s.first.size()); 1789293Sandreas.hansson@arm.com} 1799293Sandreas.hansson@arm.com 1808931Sandreas.hansson@arm.combool 1818931Sandreas.hansson@arm.comPhysicalMemory::isMemAddr(Addr addr) const 1828931Sandreas.hansson@arm.com{ 1838931Sandreas.hansson@arm.com // see if the address is within the last matched range 1849405Sandreas.hansson@arm.com if (!rangeCache.contains(addr)) { 1858931Sandreas.hansson@arm.com // lookup in the interval tree 18610482Sandreas.hansson@arm.com const auto& r = addrMap.find(addr); 1878931Sandreas.hansson@arm.com if (r == addrMap.end()) { 1888931Sandreas.hansson@arm.com // not in the cache, and not in the tree 1898931Sandreas.hansson@arm.com return false; 1908931Sandreas.hansson@arm.com } 1918931Sandreas.hansson@arm.com // the range is in the tree, update the cache 1928931Sandreas.hansson@arm.com rangeCache = r->first; 1938851Sandreas.hansson@arm.com } 1948851Sandreas.hansson@arm.com 1958931Sandreas.hansson@arm.com assert(addrMap.find(addr) != addrMap.end()); 1965477Snate@binkert.org 1978931Sandreas.hansson@arm.com // either matched the cache or found in the tree 1988931Sandreas.hansson@arm.com return true; 1998931Sandreas.hansson@arm.com} 2007730SAli.Saidi@ARM.com 2018931Sandreas.hansson@arm.comAddrRangeList 2028931Sandreas.hansson@arm.comPhysicalMemory::getConfAddrRanges() const 2038931Sandreas.hansson@arm.com{ 2048931Sandreas.hansson@arm.com // this could be done once in the constructor, but since it is unlikely to 2058931Sandreas.hansson@arm.com // be called more than once the iteration should not be a problem 2068931Sandreas.hansson@arm.com AddrRangeList ranges; 2079413Sandreas.hansson@arm.com vector<AddrRange> intlv_ranges; 20810482Sandreas.hansson@arm.com for (const auto& r : addrMap) { 20910482Sandreas.hansson@arm.com if (r.second->isConfReported()) { 2109413Sandreas.hansson@arm.com // if the range is interleaved then save it for now 21110482Sandreas.hansson@arm.com if (r.first.interleaved()) { 2129413Sandreas.hansson@arm.com // if we already got interleaved ranges that are not 2139413Sandreas.hansson@arm.com // part of the same range, then first do a merge 2149413Sandreas.hansson@arm.com // before we add the new one 2159413Sandreas.hansson@arm.com if (!intlv_ranges.empty() && 21610482Sandreas.hansson@arm.com !intlv_ranges.back().mergesWith(r.first)) { 2179413Sandreas.hansson@arm.com ranges.push_back(AddrRange(intlv_ranges)); 2189413Sandreas.hansson@arm.com intlv_ranges.clear(); 2199413Sandreas.hansson@arm.com } 22010482Sandreas.hansson@arm.com intlv_ranges.push_back(r.first); 2219413Sandreas.hansson@arm.com } else { 2229413Sandreas.hansson@arm.com // keep the current range 22310482Sandreas.hansson@arm.com ranges.push_back(r.first); 2249413Sandreas.hansson@arm.com } 2258931Sandreas.hansson@arm.com } 2267730SAli.Saidi@ARM.com } 2272391SN/A 2289413Sandreas.hansson@arm.com // if there is still interleaved ranges waiting to be merged, 2299413Sandreas.hansson@arm.com // go ahead and do it 2309413Sandreas.hansson@arm.com if (!intlv_ranges.empty()) { 2319413Sandreas.hansson@arm.com ranges.push_back(AddrRange(intlv_ranges)); 2329413Sandreas.hansson@arm.com } 2339413Sandreas.hansson@arm.com 2348931Sandreas.hansson@arm.com return ranges; 2352391SN/A} 2362391SN/A 2372541SN/Avoid 2388931Sandreas.hansson@arm.comPhysicalMemory::access(PacketPtr pkt) 2392541SN/A{ 2408931Sandreas.hansson@arm.com assert(pkt->isRequest()); 2418931Sandreas.hansson@arm.com Addr addr = pkt->getAddr(); 24210482Sandreas.hansson@arm.com const auto& m = addrMap.find(addr); 2438931Sandreas.hansson@arm.com assert(m != addrMap.end()); 2448931Sandreas.hansson@arm.com m->second->access(pkt); 2452391SN/A} 2462391SN/A 2478719SAli.Saidi@ARM.comvoid 2488931Sandreas.hansson@arm.comPhysicalMemory::functionalAccess(PacketPtr pkt) 2498719SAli.Saidi@ARM.com{ 2508931Sandreas.hansson@arm.com assert(pkt->isRequest()); 2518931Sandreas.hansson@arm.com Addr addr = pkt->getAddr(); 25210482Sandreas.hansson@arm.com const auto& m = addrMap.find(addr); 2538931Sandreas.hansson@arm.com assert(m != addrMap.end()); 2548931Sandreas.hansson@arm.com m->second->functionalAccess(pkt); 2558719SAli.Saidi@ARM.com} 2569293Sandreas.hansson@arm.com 2579293Sandreas.hansson@arm.comvoid 2589293Sandreas.hansson@arm.comPhysicalMemory::serialize(ostream& os) 2599293Sandreas.hansson@arm.com{ 2609293Sandreas.hansson@arm.com // serialize all the locked addresses and their context ids 2619293Sandreas.hansson@arm.com vector<Addr> lal_addr; 2629293Sandreas.hansson@arm.com vector<int> lal_cid; 2639293Sandreas.hansson@arm.com 26410482Sandreas.hansson@arm.com for (auto& m : memories) { 26510482Sandreas.hansson@arm.com const list<LockedAddr>& locked_addrs = m->getLockedAddrList(); 26610482Sandreas.hansson@arm.com for (const auto& l : locked_addrs) { 26710482Sandreas.hansson@arm.com lal_addr.push_back(l.addr); 26810482Sandreas.hansson@arm.com lal_cid.push_back(l.contextId); 2699293Sandreas.hansson@arm.com } 2709293Sandreas.hansson@arm.com } 2719293Sandreas.hansson@arm.com 2729293Sandreas.hansson@arm.com arrayParamOut(os, "lal_addr", lal_addr); 2739293Sandreas.hansson@arm.com arrayParamOut(os, "lal_cid", lal_cid); 2749293Sandreas.hansson@arm.com 2759293Sandreas.hansson@arm.com // serialize the backing stores 2769293Sandreas.hansson@arm.com unsigned int nbr_of_stores = backingStore.size(); 2779293Sandreas.hansson@arm.com SERIALIZE_SCALAR(nbr_of_stores); 2789293Sandreas.hansson@arm.com 2799293Sandreas.hansson@arm.com unsigned int store_id = 0; 2809293Sandreas.hansson@arm.com // store each backing store memory segment in a file 28110482Sandreas.hansson@arm.com for (auto& s : backingStore) { 2829293Sandreas.hansson@arm.com nameOut(os, csprintf("%s.store%d", name(), store_id)); 28310482Sandreas.hansson@arm.com serializeStore(os, store_id++, s.first, s.second); 2849293Sandreas.hansson@arm.com } 2859293Sandreas.hansson@arm.com} 2869293Sandreas.hansson@arm.com 2879293Sandreas.hansson@arm.comvoid 2889293Sandreas.hansson@arm.comPhysicalMemory::serializeStore(ostream& os, unsigned int store_id, 2899293Sandreas.hansson@arm.com AddrRange range, uint8_t* pmem) 2909293Sandreas.hansson@arm.com{ 2919293Sandreas.hansson@arm.com // we cannot use the address range for the name as the 2929293Sandreas.hansson@arm.com // memories that are not part of the address map can overlap 2939386Sandreas.hansson@arm.com string filename = name() + ".store" + to_string(store_id) + ".pmem"; 2949293Sandreas.hansson@arm.com long range_size = range.size(); 2959293Sandreas.hansson@arm.com 2969293Sandreas.hansson@arm.com DPRINTF(Checkpoint, "Serializing physical memory %s with size %d\n", 2979293Sandreas.hansson@arm.com filename, range_size); 2989293Sandreas.hansson@arm.com 2999293Sandreas.hansson@arm.com SERIALIZE_SCALAR(store_id); 3009293Sandreas.hansson@arm.com SERIALIZE_SCALAR(filename); 3019293Sandreas.hansson@arm.com SERIALIZE_SCALAR(range_size); 3029293Sandreas.hansson@arm.com 3039293Sandreas.hansson@arm.com // write memory file 3049293Sandreas.hansson@arm.com string filepath = Checkpoint::dir() + "/" + filename.c_str(); 30510412Sandreas.hansson@arm.com gzFile compressed_mem = gzopen(filepath.c_str(), "wb"); 30610412Sandreas.hansson@arm.com if (compressed_mem == NULL) 3079293Sandreas.hansson@arm.com fatal("Can't open physical memory checkpoint file '%s'\n", 3089293Sandreas.hansson@arm.com filename); 3099293Sandreas.hansson@arm.com 3109293Sandreas.hansson@arm.com uint64_t pass_size = 0; 3119293Sandreas.hansson@arm.com 3129293Sandreas.hansson@arm.com // gzwrite fails if (int)len < 0 (gzwrite returns int) 3139293Sandreas.hansson@arm.com for (uint64_t written = 0; written < range.size(); 3149293Sandreas.hansson@arm.com written += pass_size) { 3159293Sandreas.hansson@arm.com pass_size = (uint64_t)INT_MAX < (range.size() - written) ? 3169293Sandreas.hansson@arm.com (uint64_t)INT_MAX : (range.size() - written); 3179293Sandreas.hansson@arm.com 3189293Sandreas.hansson@arm.com if (gzwrite(compressed_mem, pmem + written, 3199293Sandreas.hansson@arm.com (unsigned int) pass_size) != (int) pass_size) { 3209293Sandreas.hansson@arm.com fatal("Write failed on physical memory checkpoint file '%s'\n", 3219293Sandreas.hansson@arm.com filename); 3229293Sandreas.hansson@arm.com } 3239293Sandreas.hansson@arm.com } 3249293Sandreas.hansson@arm.com 3259293Sandreas.hansson@arm.com // close the compressed stream and check that the exit status 3269293Sandreas.hansson@arm.com // is zero 3279293Sandreas.hansson@arm.com if (gzclose(compressed_mem)) 3289293Sandreas.hansson@arm.com fatal("Close failed on physical memory checkpoint file '%s'\n", 3299293Sandreas.hansson@arm.com filename); 3309293Sandreas.hansson@arm.com 3319293Sandreas.hansson@arm.com} 3329293Sandreas.hansson@arm.com 3339293Sandreas.hansson@arm.comvoid 3349293Sandreas.hansson@arm.comPhysicalMemory::unserialize(Checkpoint* cp, const string& section) 3359293Sandreas.hansson@arm.com{ 3369293Sandreas.hansson@arm.com // unserialize the locked addresses and map them to the 3379293Sandreas.hansson@arm.com // appropriate memory controller 3389293Sandreas.hansson@arm.com vector<Addr> lal_addr; 3399293Sandreas.hansson@arm.com vector<int> lal_cid; 3409293Sandreas.hansson@arm.com arrayParamIn(cp, section, "lal_addr", lal_addr); 3419293Sandreas.hansson@arm.com arrayParamIn(cp, section, "lal_cid", lal_cid); 3429293Sandreas.hansson@arm.com for(size_t i = 0; i < lal_addr.size(); ++i) { 34310482Sandreas.hansson@arm.com const auto& m = addrMap.find(lal_addr[i]); 3449293Sandreas.hansson@arm.com m->second->addLockedAddr(LockedAddr(lal_addr[i], lal_cid[i])); 3459293Sandreas.hansson@arm.com } 3469293Sandreas.hansson@arm.com 3479293Sandreas.hansson@arm.com // unserialize the backing stores 3489293Sandreas.hansson@arm.com unsigned int nbr_of_stores; 3499293Sandreas.hansson@arm.com UNSERIALIZE_SCALAR(nbr_of_stores); 3509293Sandreas.hansson@arm.com 3519293Sandreas.hansson@arm.com for (unsigned int i = 0; i < nbr_of_stores; ++i) { 3529293Sandreas.hansson@arm.com unserializeStore(cp, csprintf("%s.store%d", section, i)); 3539293Sandreas.hansson@arm.com } 3549293Sandreas.hansson@arm.com 3559293Sandreas.hansson@arm.com} 3569293Sandreas.hansson@arm.com 3579293Sandreas.hansson@arm.comvoid 3589293Sandreas.hansson@arm.comPhysicalMemory::unserializeStore(Checkpoint* cp, const string& section) 3599293Sandreas.hansson@arm.com{ 3609293Sandreas.hansson@arm.com const uint32_t chunk_size = 16384; 3619293Sandreas.hansson@arm.com 3629293Sandreas.hansson@arm.com unsigned int store_id; 3639293Sandreas.hansson@arm.com UNSERIALIZE_SCALAR(store_id); 3649293Sandreas.hansson@arm.com 3659293Sandreas.hansson@arm.com string filename; 3669293Sandreas.hansson@arm.com UNSERIALIZE_SCALAR(filename); 3679293Sandreas.hansson@arm.com string filepath = cp->cptDir + "/" + filename; 3689293Sandreas.hansson@arm.com 3699293Sandreas.hansson@arm.com // mmap memoryfile 37010412Sandreas.hansson@arm.com gzFile compressed_mem = gzopen(filepath.c_str(), "rb"); 37110412Sandreas.hansson@arm.com if (compressed_mem == NULL) 3729293Sandreas.hansson@arm.com fatal("Can't open physical memory checkpoint file '%s'", filename); 3739293Sandreas.hansson@arm.com 37410070Sandreas.hansson@arm.com // we've already got the actual backing store mapped 3759293Sandreas.hansson@arm.com uint8_t* pmem = backingStore[store_id].second; 3769293Sandreas.hansson@arm.com AddrRange range = backingStore[store_id].first; 3779293Sandreas.hansson@arm.com 3789293Sandreas.hansson@arm.com long range_size; 3799293Sandreas.hansson@arm.com UNSERIALIZE_SCALAR(range_size); 3809293Sandreas.hansson@arm.com 3819293Sandreas.hansson@arm.com DPRINTF(Checkpoint, "Unserializing physical memory %s with size %d\n", 3829293Sandreas.hansson@arm.com filename, range_size); 3839293Sandreas.hansson@arm.com 3849293Sandreas.hansson@arm.com if (range_size != range.size()) 3859293Sandreas.hansson@arm.com fatal("Memory range size has changed! Saw %lld, expected %lld\n", 3869293Sandreas.hansson@arm.com range_size, range.size()); 3879293Sandreas.hansson@arm.com 3889293Sandreas.hansson@arm.com uint64_t curr_size = 0; 3899293Sandreas.hansson@arm.com long* temp_page = new long[chunk_size]; 3909293Sandreas.hansson@arm.com long* pmem_current; 3919293Sandreas.hansson@arm.com uint32_t bytes_read; 3929293Sandreas.hansson@arm.com while (curr_size < range.size()) { 3939293Sandreas.hansson@arm.com bytes_read = gzread(compressed_mem, temp_page, chunk_size); 3949293Sandreas.hansson@arm.com if (bytes_read == 0) 3959293Sandreas.hansson@arm.com break; 3969293Sandreas.hansson@arm.com 3979293Sandreas.hansson@arm.com assert(bytes_read % sizeof(long) == 0); 3989293Sandreas.hansson@arm.com 3999293Sandreas.hansson@arm.com for (uint32_t x = 0; x < bytes_read / sizeof(long); x++) { 4009293Sandreas.hansson@arm.com // Only copy bytes that are non-zero, so we don't give 4019293Sandreas.hansson@arm.com // the VM system hell 4029293Sandreas.hansson@arm.com if (*(temp_page + x) != 0) { 4039293Sandreas.hansson@arm.com pmem_current = (long*)(pmem + curr_size + x * sizeof(long)); 4049293Sandreas.hansson@arm.com *pmem_current = *(temp_page + x); 4059293Sandreas.hansson@arm.com } 4069293Sandreas.hansson@arm.com } 4079293Sandreas.hansson@arm.com curr_size += bytes_read; 4089293Sandreas.hansson@arm.com } 4099293Sandreas.hansson@arm.com 4109293Sandreas.hansson@arm.com delete[] temp_page; 4119293Sandreas.hansson@arm.com 4129293Sandreas.hansson@arm.com if (gzclose(compressed_mem)) 4139293Sandreas.hansson@arm.com fatal("Close failed on physical memory checkpoint file '%s'\n", 4149293Sandreas.hansson@arm.com filename); 4159293Sandreas.hansson@arm.com} 416