3 files changed, 114 insertions, 17 deletions

diff --git a/src/arch/alpha/isa/decoder.isa b/src/arch/alpha/isa/decoder.isa
index b62372f66..af1a91a62 100644
--- a/src/arch/alpha/isa/decoder.isa
+++ b/src/arch/alpha/isa/decoder.isa
@@ -728,8 +728,10 @@ decode OPCODE default Unknown::unknown() {
         0: OpcdecFault::hw_st_quad();
         1: decode HW_LDST_QUAD {
             format HwLoad {
-                0: hw_ld({{ EA = (Rb + disp) & ~3; }}, {{ Ra = Mem.ul; }}, L);
-                1: hw_ld({{ EA = (Rb + disp) & ~7; }}, {{ Ra = Mem.uq; }}, Q);
+                0: hw_ld({{ EA = (Rb + disp) & ~3; }}, {{ Ra = Mem.ul; }},
+                         L, IsSerializing, IsSerializeBefore);
+                1: hw_ld({{ EA = (Rb + disp) & ~7; }}, {{ Ra = Mem.uq; }},
+                         Q, IsSerializing, IsSerializeBefore);
             }
         }
     }
@@ -740,9 +742,9 @@ decode OPCODE default Unknown::unknown() {
             1: decode HW_LDST_COND {
                 0: decode HW_LDST_QUAD {
                     0: hw_st({{ EA = (Rb + disp) & ~3; }},
-                {{ Mem.ul = Ra<31:0>; }}, L);
+                {{ Mem.ul = Ra<31:0>; }}, L, IsSerializing, IsSerializeBefore);
                     1: hw_st({{ EA = (Rb + disp) & ~7; }},
-                {{ Mem.uq = Ra.uq; }}, Q);
+                {{ Mem.uq = Ra.uq; }}, Q, IsSerializing, IsSerializeBefore);
                 }
 
                 1: FailUnimpl::hw_st_cond();
diff --git a/src/arch/alpha/predecoder.hh b/src/arch/alpha/predecoder.hh
new file mode 100644
index 000000000..650f2bfa2
--- /dev/null
+++ b/src/arch/alpha/predecoder.hh
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2006 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: Gabe Black
+ */
+
+#ifndef __ARCH_ALPHA_PREDECODER_HH__
+#define __ARCH_ALPHA_PREDECODER_HH__
+
+#include "arch/alpha/types.hh"
+#include "base/misc.hh"
+#include "config/full_system.hh"
+#include "sim/host.hh"
+
+class ThreadContext;
+
+namespace AlphaISA
+{
+    class Predecoder
+    {
+      protected:
+        ThreadContext * tc;
+        //The pc of the current instruction
+        Addr fetchPC;
+        //The extended machine instruction being generated
+        ExtMachInst ext_inst;
+
+      public:
+        Predecoder(ThreadContext * _tc) : tc(_tc)
+        {}
+
+        ThreadContext * getTC()
+        {
+            return tc;
+        }
+
+        void setTC(ThreadContext * _tc)
+        {
+            tc = _tc;
+        }
+
+        void process()
+        {
+        }
+
+        //Use this to give data to the predecoder. This should be used
+        //when there is control flow.
+        void moreBytes(Addr pc, Addr off, MachInst inst)
+        {
+            fetchPC = pc;
+            assert(off == 0);
+            ext_inst = inst;
+#if FULL_SYSTEM
+            if (pc && 0x1)
+                ext_inst|=(static_cast<ExtMachInst>(pc & 0x1) << 32);
+#endif
+        }
+
+        //Use this to give data to the predecoder. This should be used
+        //when instructions are executed in order.
+        void moreBytes(MachInst machInst)
+        {
+            moreBytes(fetchPC + sizeof(machInst), 0, machInst);
+        }
+
+        bool needMoreBytes()
+        {
+            return true;
+        }
+
+        bool extMachInstReady()
+        {
+            return true;
+        }
+
+        //This returns a constant reference to the ExtMachInst to avoid a copy
+        const ExtMachInst & getExtMachInst()
+        {
+            return ext_inst;
+        }
+    };
+};
+
+#endif // __ARCH_ALPHA_PREDECODER_HH__
diff --git a/src/arch/alpha/utility.hh b/src/arch/alpha/utility.hh
index b7844c7eb..c20394a92 100644
--- a/src/arch/alpha/utility.hh
+++ b/src/arch/alpha/utility.hh
@@ -48,19 +48,6 @@ namespace AlphaISA
         return (tc->readMiscRegNoEffect(AlphaISA::IPR_DTB_CM) & 0x18) != 0;
     }
 
-    static inline ExtMachInst
-    makeExtMI(MachInst inst, Addr pc) {
-#if FULL_SYSTEM
-        ExtMachInst ext_inst = inst;
-        if (pc && 0x1)
-            return ext_inst|=(static_cast<ExtMachInst>(pc & 0x1) << 32);
-        else
-            return ext_inst;
-#else
-        return ExtMachInst(inst);
-#endif
-    }
-
     inline bool isCallerSaveIntegerRegister(unsigned int reg) {
         panic("register classification not implemented");
         return (reg >= 1 && reg <= 8 || reg >= 22 && reg <= 25 || reg == 27);