Add in a new translating port that allows syscalls to translate addresses via the page table before accessing the memory port.

Other compile issues cleaned up.

SConscript:
    Changes to compile the new Translating Port.
    Split out memtester and eio support, will rework them back in after first getting a simpleCPU to work
arch/alpha/alpha_linux_process.cc:
arch/alpha/alpha_tru64_process.cc:
sim/syscall_emul.cc:
sim/syscall_emul.hh:
    Changes to use the new translating Port.
cpu/exec_context.cc:
cpu/exec_context.hh:
    Create a translating port in each execution context.
sim/process.cc:
    Fix the way we do proxy memory

--HG--
extra : convert_revision : 3d33218fe8b425a5d9ce24757f1112b4aa6001fd

1 files changed, 119 insertions, 0 deletions

diff --git a/mem/translating_port.cc b/mem/translating_port.cc
new file mode 100644
index 000000000..11004769e
--- /dev/null
+++ b/mem/translating_port.cc
@@ -0,0 +1,119 @@
+/*
+ * 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 "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;
+
+    //@todo Break up things larger than a page size
+    pTable->page_check(addr, size);
+
+
+    if (!pTable->translate(addr,paddr))
+        return Machine_Check_Fault;
+
+    port->readBlobFunctional(paddr, p, size);
+    return No_Fault;
+}
+
+Fault
+TranslatingPort::writeBlobFunctional(Addr addr, const uint8_t *p, int size)
+{
+    Addr paddr;
+
+    //@todo Break up things larger than a page size
+    pTable->page_check(addr, size);
+
+    if (!pTable->translate(addr,paddr))
+        return Machine_Check_Fault;
+
+    port->writeBlobFunctional(paddr, p, size);
+    return No_Fault;
+}
+
+Fault
+TranslatingPort::memsetBlobFunctional(Addr addr, uint8_t val, int size)
+{
+    Addr paddr;
+
+    //@todo Break up things larger than a page size
+    pTable->page_check(addr, size);
+
+    if (!pTable->translate(addr,paddr))
+        return Machine_Check_Fault;
+
+    port->memsetBlobFunctional(paddr, val, size);
+    return No_Fault;
+}
+
+Fault
+TranslatingPort::writeStringFunctional(Addr addr, const char *str)
+{
+    //@todo Break up things larger than a page size
+    //pTable->page_check(addr, size);
+    //Need to check string length???
+
+    Addr paddr;
+
+    if (!pTable->translate(addr,paddr))
+        return Machine_Check_Fault;
+
+    port->writeStringFunctional(paddr, str);
+    return No_Fault;
+}
+
+Fault
+TranslatingPort::readStringFunctional(std::string &str, Addr addr)
+{
+    //@todo Break up things larger than a page size
+    //pTable->page_check(addr, size);
+    //Need to check string length???
+
+    Addr paddr;
+
+    if (!pTable->translate(addr,paddr))
+        return Machine_Check_Fault;
+
+    //@todo Break this up into readBlobs
+    port->readStringFunctional(str, paddr);
+    return No_Fault;
+}
+