* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Authors: Ron Dreslinski
- * Steve Reinhardt
- * Andreas Hansson
*/
-#include <string>
-
-#include "base/chunk_generator.hh"
-#include "config/the_isa.hh"
-#include "mem/page_table.hh"
#include "mem/se_translating_port_proxy.hh"
-#include "sim/process.hh"
-
-using namespace TheISA;
-
-SETranslatingPortProxy::SETranslatingPortProxy(Port& port, Process *p,
- AllocType alloc)
- : PortProxy(port), pTable(p->pTable), process(p),
- allocating(alloc)
-{ }
-
-SETranslatingPortProxy::~SETranslatingPortProxy()
-{ }
-
-bool
-SETranslatingPortProxy::tryReadBlob(Addr addr, uint8_t *p, int size)
-{
- Addr paddr;
- int prevSize = 0;
-
- for (ChunkGenerator gen(addr, size, VMPageSize); !gen.done(); gen.next()) {
-
- if (!pTable->translate(gen.addr(),paddr))
- return false;
-
- PortProxy::readBlob(paddr, p + prevSize, gen.size());
- prevSize += gen.size();
- }
-
- return true;
-}
-
-void
-SETranslatingPortProxy::readBlob(Addr addr, uint8_t *p, int size)
-{
- if (!tryReadBlob(addr, p, size))
- fatal("readBlob(0x%x, ...) failed", addr);
-}
-
-
-bool
-SETranslatingPortProxy::tryWriteBlob(Addr addr, uint8_t *p, int size)
-{
-
- Addr paddr;
- int prevSize = 0;
-
- for (ChunkGenerator gen(addr, size, VMPageSize); !gen.done(); gen.next()) {
-
- if (!pTable->translate(gen.addr(), paddr)) {
- if (allocating == Always) {
- process->allocateMem(roundDown(gen.addr(), VMPageSize),
- VMPageSize);
- } else if (allocating == NextPage) {
- // check if we've accessed the next page on the stack
- if (!process->fixupStackFault(gen.addr()))
- panic("Page table fault when accessing virtual address %#x "
- "during functional write\n", gen.addr());
- } else {
- return false;
- }
- pTable->translate(gen.addr(), paddr);
- }
-
- PortProxy::writeBlob(paddr, p + prevSize, gen.size());
- prevSize += gen.size();
- }
-
- return true;
-}
+#include "sim/process.hh"
+#include "sim/system.hh"
-void
-SETranslatingPortProxy::writeBlob(Addr addr, uint8_t *p, int size)
-{
- if (!tryWriteBlob(addr, p, size))
- fatal("writeBlob(0x%x, ...) failed", addr);
-}
+SETranslatingPortProxy::SETranslatingPortProxy(
+ ThreadContext *tc, AllocType alloc, Request::Flags _flags) :
+ TranslatingPortProxy(tc, _flags), allocating(alloc)
+{}
bool
-SETranslatingPortProxy::tryMemsetBlob(Addr addr, uint8_t val, int size)
+SETranslatingPortProxy::fixupAddr(Addr addr, BaseTLB::Mode mode) const
{
- Addr paddr;
-
- for (ChunkGenerator gen(addr, size, VMPageSize); !gen.done(); gen.next()) {
-
- if (!pTable->translate(gen.addr(), paddr)) {
- if (allocating == Always) {
- process->allocateMem(roundDown(gen.addr(), VMPageSize),
- VMPageSize);
- pTable->translate(gen.addr(), paddr);
- } else {
- return false;
- }
+ auto *process = _tc->getProcessPtr();
+
+ if (mode == BaseTLB::Write) {
+ if (allocating == Always) {
+ process->allocateMem(roundDown(addr, pageBytes), pageBytes);
+ return true;
+ } else if (allocating == NextPage && process->fixupFault(addr)) {
+ // We've accessed the next page on the stack.
+ return true;
}
-
- PortProxy::memsetBlob(paddr, val, gen.size());
}
-
- return true;
-}
-
-void
-SETranslatingPortProxy::memsetBlob(Addr addr, uint8_t val, int size)
-{
- if (!tryMemsetBlob(addr, val, size))
- fatal("memsetBlob(0x%x, ...) failed", addr);
-}
-
-
-bool
-SETranslatingPortProxy::tryWriteString(Addr addr, const char *str)
-{
- Addr paddr,vaddr;
- uint8_t c;
-
- vaddr = addr;
-
- do {
- c = *str++;
- if (!pTable->translate(vaddr++,paddr))
- return false;
-
- PortProxy::writeBlob(paddr, &c, 1);
- } while (c);
-
- return true;
-}
-
-void
-SETranslatingPortProxy::writeString(Addr addr, const char *str)
-{
- if (!tryWriteString(addr, str))
- fatal("writeString(0x%x, ...) failed", addr);
-}
-
-bool
-SETranslatingPortProxy::tryReadString(std::string &str, Addr addr)
-{
- Addr paddr,vaddr;
- uint8_t c;
-
- vaddr = addr;
-
- do {
- if (!pTable->translate(vaddr++,paddr))
- return false;
-
- PortProxy::readBlob(paddr, &c, 1);
- str += c;
- } while (c);
-
- return true;
+ return false;
}
-
-void
-SETranslatingPortProxy::readString(std::string &str, Addr addr)
-{
- if (!tryReadString(str, addr))
- fatal("readString(0x%x, ...) failed", addr);
-}
-