void ItbPageFault::invoke(ThreadContext * tc)
{
Process *p = tc->getProcessPtr();
- Addr physaddr;
- bool success = p->pTable->translate(pc, physaddr);
+ TlbEntry entry;
+ bool success = p->pTable->lookup(pc, entry);
if(!success) {
panic("Tried to execute unmapped address %#x.\n", pc);
} else {
VAddr vaddr(pc);
- VAddr paddr(physaddr);
-
- TlbEntry entry;
- entry.tag = vaddr.vpn();
- entry.ppn = paddr.vpn();
- entry.xre = 15; //This can be read in all modes.
- entry.xwe = 1; //This can be written only in kernel mode.
- entry.asn = p->M5_pid; //Address space number.
- entry.asma = false; //Only match on this ASN.
- entry.fonr = false; //Don't fault on read.
- entry.fonw = false; //Don't fault on write.
- entry.valid = true; //This entry is valid.
-
tc->getITBPtr()->insert(vaddr.page(), entry);
}
}
void NDtbMissFault::invoke(ThreadContext * tc)
{
Process *p = tc->getProcessPtr();
- Addr physaddr;
- bool success = p->pTable->translate(vaddr, physaddr);
+ TlbEntry entry;
+ bool success = p->pTable->lookup(vaddr, entry);
if(!success) {
p->checkAndAllocNextPage(vaddr);
- success = p->pTable->translate(vaddr, physaddr);
+ success = p->pTable->lookup(vaddr, entry);
}
if(!success) {
panic("Tried to access unmapped address %#x.\n", (Addr)vaddr);
} else {
- VAddr paddr(physaddr);
-
- TlbEntry entry;
- entry.tag = vaddr.vpn();
- entry.ppn = paddr.vpn();
- entry.xre = 15; //This can be read in all modes.
- entry.xwe = 15; //This can be written in all modes.
- entry.asn = p->M5_pid; //Address space number.
- entry.asma = false; //Only match on this ASN.
- entry.fonr = false; //Don't fault on read.
- entry.fonw = false; //Don't fault on write.
- entry.valid = true; //This entry is valid.
-
tc->getDTBPtr()->insert(vaddr.page(), entry);
}
}
// ITB/DTB table entry
struct TlbEntry
{
- Addr pageStart;
//Construct an entry that maps to physical address addr.
- TlbEntry(Addr addr) : pageStart(addr)
- {}
+ TlbEntry(Addr _asn, Addr _vaddr, Addr _paddr)
+ {
+ VAddr vaddr(_vaddr);
+ VAddr paddr(_paddr);
+ tag = vaddr.vpn();
+ ppn = paddr.vpn();
+ xre = 15;
+ xwe = 15;
+ asn = _asn;
+ asma = false;
+ fonr = false;
+ fonw = false;
+ valid = true;
+ }
TlbEntry()
{}
bool fonw; // fault on write
bool valid; // valid page table entry
+ Addr pageStart()
+ {
+ return ppn << PageShift;
+ }
+
void serialize(std::ostream &os);
void unserialize(Checkpoint *cp, const std::string §ion);
};
void
TlbEntry::serialize(std::ostream &os)
{
- SERIALIZE_SCALAR(pageStart);
+ SERIALIZE_SCALAR(_pageStart);
}
void
TlbEntry::unserialize(Checkpoint *cp, const std::string §ion)
{
- UNSERIALIZE_SCALAR(pageStart);
+ UNSERIALIZE_SCALAR(_pageStart);
}
};
{
struct TlbEntry
{
- Addr pageStart;
+ Addr _pageStart;
TlbEntry() {}
- TlbEntry(Addr paddr) : pageStart(paddr) {}
+ TlbEntry(Addr asn, Addr vaddr, Addr paddr) : _pageStart(paddr) {}
+
+ Addr pageStart()
+ {
+ return _pageStart;
+ }
void serialize(std::ostream &os);
void unserialize(Checkpoint *cp, const std::string §ion);
void FastInstructionAccessMMUMiss::invoke(ThreadContext *tc)
{
Process *p = tc->getProcessPtr();
- Addr paddr;
- bool success = p->pTable->translate(vaddr, paddr);
+ TlbEntry entry;
+ bool success = p->pTable->lookup(vaddr, entry);
if(!success) {
panic("Tried to execute unmapped address %#x.\n", vaddr);
} else {
-
- uint64_t entry = 0;
- entry |= 0ULL << 1; // Not writable
- entry |= 0ULL << 2; // Available in nonpriveleged mode
- entry |= 0ULL << 3; // No side effects
- entry |= 1ULL << 4; // Virtually cachable
- entry |= 1ULL << 5; // Physically cachable
- entry |= 0ULL << 6; // Not locked
- entry |= mbits(paddr, 39, 13); // Physical address
- entry |= 0ULL << 48; // size = 8k
- entry |= 0uLL << 59; // Endianness not inverted
- entry |= 0ULL << 60; // Not no fault only
- entry |= 0ULL << 61; // size = 8k
- entry |= 1ULL << 63; // valid
- PageTableEntry PTE(entry);
-
Addr alignedVaddr = p->pTable->pageAlign(vaddr);
tc->getITBPtr()->insert(alignedVaddr, 0 /*partition id*/,
- p->M5_pid /*context id*/, false, PTE);
+ p->M5_pid /*context id*/, false, entry.pte);
}
}
void FastDataAccessMMUMiss::invoke(ThreadContext *tc)
{
Process *p = tc->getProcessPtr();
- Addr paddr;
- bool success = p->pTable->translate(vaddr, paddr);
+ TlbEntry entry;
+ bool success = p->pTable->lookup(vaddr, entry);
if(!success) {
p->checkAndAllocNextPage(vaddr);
- success = p->pTable->translate(vaddr, paddr);
+ success = p->pTable->lookup(vaddr, entry);
}
if(!success) {
panic("Tried to access unmapped address %#x.\n", vaddr);
} else {
-
- uint64_t entry = 0;
- entry |= 1ULL << 1; // Writable
- entry |= 0ULL << 2; // Available in nonpriveleged mode
- entry |= 0ULL << 3; // No side effects
- entry |= 1ULL << 4; // Virtually cachable
- entry |= 1ULL << 5; // Physically cachable
- entry |= 0ULL << 6; // Not locked
- entry |= mbits(paddr, 39, 13); // Physical address
- entry |= 0ULL << 48; // size = 8k
- entry |= 0uLL << 59; // Endianness not inverted
- entry |= 0ULL << 60; // Not no fault only
- entry |= 0ULL << 61; // size = 8k
- entry |= 1ULL << 63; // valid
- PageTableEntry PTE(entry);
-
Addr alignedVaddr = p->pTable->pageAlign(vaddr);
tc->getDTBPtr()->insert(alignedVaddr, 0 /*partition id*/,
- p->M5_pid /*context id*/, false, PTE);
+ p->M5_pid /*context id*/, false, entry.pte);
}
}
struct TlbEntry {
- Addr pageStart;
+ TlbEntry(Addr asn, Addr vaddr, Addr paddr)
+ {
+ uint64_t entry = 0;
+ entry |= 1ULL << 1; // Writable
+ entry |= 0ULL << 2; // Available in nonpriveleged mode
+ entry |= 0ULL << 3; // No side effects
+ entry |= 1ULL << 4; // Virtually cachable
+ entry |= 1ULL << 5; // Physically cachable
+ entry |= 0ULL << 6; // Not locked
+ entry |= mbits(paddr, 39, 13); // Physical address
+ entry |= 0ULL << 48; // size = 8k
+ entry |= 0uLL << 59; // Endianness not inverted
+ entry |= 0ULL << 60; // Not no fault only
+ entry |= 0ULL << 61; // size = 8k
+ entry |= 1ULL << 63; // valid
+ pte = PageTableEntry(entry);
+
+ range.va = vaddr;
+ range.size = 8*(1<<10);
+ range.contextId = asn;
+ range.partitionId = 0;
+ range.real = false;
+
+ valid = true;
+ }
TlbEntry()
{}
- TlbEntry(Addr addr) : pageStart(addr)
- {}
TlbRange range;
PageTableEntry pte;
bool used;
bool valid;
+ Addr pageStart()
+ {
+ return pte.paddr();
+ }
+
void serialize(std::ostream &os);
void unserialize(Checkpoint *cp, const std::string §ion);
DPRINTF(TLB, "Invoking an ITLB fault for address %#x at pc %#x.\n",
vaddr, tc->readPC());
Process *p = tc->getProcessPtr();
- Addr paddr;
- bool success = p->pTable->translate(vaddr, paddr);
+ TlbEntry entry;
+ bool success = p->pTable->lookup(vaddr, entry);
if(!success) {
panic("Tried to execute unmapped address %#x.\n", vaddr);
} else {
- TlbEntry entry;
- entry.pageStart = p->pTable->pageAlign(paddr);
- entry.writeable = false;
- entry.user = true;
- entry.uncacheable = false;
- entry.global = false;
- entry.patBit = 0;
- entry.noExec = false;
- entry.size = PageBytes;
Addr alignedVaddr = p->pTable->pageAlign(vaddr);
DPRINTF(TLB, "Mapping %#x to %#x\n", alignedVaddr, entry.pageStart);
tc->getITBPtr()->insert(alignedVaddr, entry);
DPRINTF(TLB, "Invoking an DTLB fault for address %#x at pc %#x.\n",
vaddr, tc->readPC());
Process *p = tc->getProcessPtr();
- Addr paddr;
- bool success = p->pTable->translate(vaddr, paddr);
+ TlbEntry entry;
+ bool success = p->pTable->lookup(vaddr, entry);
if(!success) {
p->checkAndAllocNextPage(vaddr);
- success = p->pTable->translate(vaddr, paddr);
+ success = p->pTable->lookup(vaddr, entry);
}
if(!success) {
panic("Tried to access unmapped address %#x.\n", vaddr);
} else {
- TlbEntry entry;
- entry.pageStart = p->pTable->pageAlign(paddr);
- entry.writeable = true;
- entry.user = true;
- entry.uncacheable = false;
- entry.global = false;
- entry.patBit = 0;
- entry.noExec = true;
- entry.size = PageBytes;
Addr alignedVaddr = p->pTable->pageAlign(vaddr);
DPRINTF(TLB, "Mapping %#x to %#x\n", alignedVaddr, entry.pageStart);
tc->getDTBPtr()->insert(alignedVaddr, entry);
* Authors: Gabe Black
*/
+#include "arch/x86/isa_traits.hh"
#include "arch/x86/pagetable.hh"
#include "sim/serialize.hh"
namespace X86ISA
{
+TlbEntry::TlbEntry(Addr asn, Addr _vaddr, Addr _paddr) :
+ paddr(_paddr), vaddr(_vaddr), size(PageBytes), writable(true), user(true),
+ uncacheable(false), global(false), patBit(0), noExec(false)
+{}
+
void
TlbEntry::serialize(std::ostream &os)
{
struct TlbEntry
{
// The base of the physical page.
- Addr pageStart;
+ Addr paddr;
+
+ // The beginning of the virtual page this entry maps.
+ Addr vaddr;
+ // The size of the page this entry represents.
+ Addr size;
+
// Read permission is always available, assuming it isn't blocked by
// other mechanisms.
- bool writeable;
+ bool writable;
// Whether this page is accesible without being in supervisor mode.
bool user;
// Whether to use write through or write back. M5 ignores this and
// Whether or not memory on this page can be executed.
bool noExec;
- // The beginning of the virtual page this entry maps.
- Addr vaddr;
- // The size of the page this entry represents.
- Addr size;
-
+ TlbEntry(Addr asn, Addr _vaddr, Addr _paddr);
TlbEntry() {}
- TlbEntry(Addr paddr) : pageStart(paddr) {}
+
+ Addr pageStart()
+ {
+ return paddr;
+ }
void serialize(std::ostream &os);
void unserialize(Checkpoint *cp, const std::string §ion);
#endif
} else {
// Do paging protection checks.
- Addr paddr = entry->pageStart | (vaddr & mask(12));
+ Addr paddr = entry->paddr | (vaddr & mask(12));
req->setPaddr(paddr);
}
} else {
#include "base/intmath.hh"
#include "base/trace.hh"
#include "mem/page_table.hh"
+#include "sim/process.hh"
#include "sim/sim_object.hh"
#include "sim/system.hh"
using namespace std;
using namespace TheISA;
-PageTable::PageTable(System *_system, Addr _pageSize)
+PageTable::PageTable(Process *_process, Addr _pageSize)
: pageSize(_pageSize), offsetMask(mask(floorLog2(_pageSize))),
- system(_system)
+ process(_process)
{
assert(isPowerOf2(pageSize));
pTableCache[0].vaddr = 0;
vaddr);
}
- pTable[vaddr] = TheISA::TlbEntry(system->new_page());
+ pTable[vaddr] = TheISA::TlbEntry(process->M5_pid, vaddr,
+ process->system->new_page());
updateCache(vaddr, pTable[vaddr]);
}
}
DPRINTF(MMU, "Couldn't Translate: %#x\n", vaddr);
return false;
}
- paddr = pageOffset(vaddr) + entry.pageStart;
+ paddr = pageOffset(vaddr) + entry.pageStart();
DPRINTF(MMU, "Translating: %#x->%#x\n", vaddr, paddr);
return true;
}
#include "sim/host.hh"
#include "sim/serialize.hh"
-class System;
+class Process;
/**
* Page Table Declaration.
const Addr pageSize;
const Addr offsetMask;
- System *system;
+ Process *process;
public:
- PageTable(System *_system, Addr _pageSize = TheISA::VMPageSize);
+ PageTable(Process *_process, Addr _pageSize = TheISA::VMPageSize);
~PageTable();
mmap_start = mmap_end = 0;
nxm_start = nxm_end = 0;
- pTable = new PageTable(system);
+ pTable = new PageTable(this);
// other parameters will be initialized when the program is loaded
}
projects / gem5.git / commitdiff