1 files changed, 149 insertions, 0 deletions
diff --git a/mem/translating_port.cc b/mem/translating_port.cc
new file mode 100644
index 000000000..f4f2ca737
--- /dev/null
+++ b/mem/translating_port.cc
@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 2001-2005 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * 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.
+ */
+
+#include <string>
+#include "base/chunk_generator.hh"
+#include "mem/port.hh"
+#include "mem/translating_port.hh"
+#include "mem/page_table.hh"
+
+TranslatingPort::TranslatingPort(Port *_port, PageTable *p_table)
+    : port(_port), pTable(p_table)
+{ }
+
+TranslatingPort::~TranslatingPort()
+{ }
+
+Fault
+TranslatingPort::readBlobFunctional(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 Machine_Check_Fault;
+
+        port->readBlobFunctional(paddr, p + prevSize, gen.size());
+        prevSize += gen.size();
+    }
+
+    return No_Fault;
+}
+
+Fault
+TranslatingPort::writeBlobFunctional(Addr addr, uint8_t *p, int size,
+                                     bool alloc)
+{
+    Addr paddr;
+    int prevSize = 0;
+
+    for (ChunkGenerator gen(addr, size, VMPageSize); !gen.done(); gen.next()) {
+
+        if (!pTable->translate(gen.addr(), paddr)) {
+            if (alloc) {
+                pTable->allocate(roundDown(gen.addr(), VMPageSize),
+                                 VMPageSize);
+                pTable->translate(gen.addr(), paddr);
+            } else {
+                return Machine_Check_Fault;
+            }
+        }
+
+        port->writeBlobFunctional(paddr, p + prevSize, gen.size());
+        prevSize += gen.size();
+    }
+
+    return No_Fault;
+}
+
+
+Fault
+TranslatingPort::memsetBlobFunctional(Addr addr, uint8_t val, int size,
+                                      bool alloc)
+{
+    Addr paddr;
+
+    for (ChunkGenerator gen(addr, size, VMPageSize); !gen.done(); gen.next()) {
+
+        if (!pTable->translate(gen.addr(), paddr)) {
+            if (alloc) {
+                pTable->allocate(roundDown(gen.addr(), VMPageSize),
+                                 VMPageSize);
+                pTable->translate(gen.addr(), paddr);
+            } else {
+                return Machine_Check_Fault;
+            }
+        }
+
+        port->memsetBlobFunctional(paddr, val, gen.size());
+    }
+
+    return No_Fault;
+}
+
+
+Fault
+TranslatingPort::writeStringFunctional(Addr addr, const char *str)
+{
+    Addr paddr,vaddr;
+    uint8_t c;
+
+    vaddr = addr;
+
+    do {
+        c = *str++;
+        if (!pTable->translate(vaddr++,paddr))
+            return Machine_Check_Fault;
+
+        port->writeBlobFunctional(paddr, &c, 1);
+    } while (c);
+
+    return No_Fault;
+}
+
+Fault
+TranslatingPort::readStringFunctional(std::string &str, Addr addr)
+{
+    Addr paddr,vaddr;
+    uint8_t c;
+
+    vaddr = addr;
+
+    do {
+        if (!pTable->translate(vaddr++,paddr))
+            return Machine_Check_Fault;
+
+        port->readBlobFunctional(paddr, &c, 1);
+        str += c;
+    } while (c);
+
+    return No_Fault;
+}
+