Merge with the main repo.

--HG--
rename : src/mem/vport.hh => src/mem/fs_translating_port_proxy.hh
rename : src/mem/translating_port.cc => src/mem/se_translating_port_proxy.cc
rename : src/mem/translating_port.hh => src/mem/se_translating_port_proxy.hh

1 files changed, 212 insertions, 0 deletions

diff --git a/src/mem/se_translating_port_proxy.cc b/src/mem/se_translating_port_proxy.cc
new file mode 100644
index 000000000..0f7ecb491
--- /dev/null
+++ b/src/mem/se_translating_port_proxy.cc
@@ -0,0 +1,212 @@
+/*
+ * Copyright (c) 2011 ARM Limited
+ * All rights reserved
+ *
+ * The license below extends only to copyright in the software and shall
+ * not be construed as granting a license to any other intellectual
+ * property including but not limited to intellectual property relating
+ * to a hardware implementation of the functionality of the software
+ * licensed hereunder.  You may use the software subject to the license
+ * terms below provided that you ensure that this notice is replicated
+ * unmodified and in its entirety in all distributions of the software,
+ * modified or unmodified, in source code or in binary form.
+ *
+ * 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.
+ *
+ * Authors: Ron Dreslinski
+ *          Steve Reinhardt
+ *          Andreas Hansson
+ */
+
+#include <string>
+
+#include "arch/isa_traits.hh"
+#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)
+{
+    int prevSize = 0;
+
+    for (ChunkGenerator gen(addr, size, VMPageSize); !gen.done(); gen.next()) {
+        Addr paddr;
+
+        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)
+{
+    int prevSize = 0;
+
+    for (ChunkGenerator gen(addr, size, VMPageSize); !gen.done(); gen.next()) {
+        Addr paddr;
+
+        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;
+}
+
+
+void
+SETranslatingPortProxy::writeBlob(Addr addr, uint8_t *p, int size)
+{
+    if (!tryWriteBlob(addr, p, size))
+        fatal("writeBlob(0x%x, ...) failed", addr);
+}
+
+bool
+SETranslatingPortProxy::tryMemsetBlob(Addr addr, uint8_t val, int size)
+{
+    for (ChunkGenerator gen(addr, size, VMPageSize); !gen.done(); gen.next()) {
+        Addr paddr;
+
+        if (!pTable->translate(gen.addr(), paddr)) {
+            if (allocating == Always) {
+                process->allocateMem(roundDown(gen.addr(), VMPageSize),
+                                     VMPageSize);
+                pTable->translate(gen.addr(), paddr);
+            } else {
+                return false;
+            }
+        }
+
+        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)
+{
+    uint8_t c;
+
+    Addr vaddr = addr;
+
+    do {
+        c = *str++;
+        Addr paddr;
+
+        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)
+{
+    uint8_t c;
+
+    Addr vaddr = addr;
+
+    do {
+        Addr paddr;
+
+        if (!pTable->translate(vaddr++, paddr))
+            return false;
+
+        PortProxy::readBlob(paddr, &c, 1);
+        str += c;
+    } while (c);
+
+    return true;
+}
+
+void
+SETranslatingPortProxy::readString(std::string &str, Addr addr)
+{
+    if (!tryReadString(str, addr))
+        fatal("readString(0x%x, ...) failed", addr);
+}
+