arch: ISA parser additions of vector registers

Reiley's update :) of the isa parser definitions. My addition of the
vector element operand concept for the ISA parser. Nathanael's modification
creating a hierarchy between vector registers and its constituencies to the
isa parser.

Some fixes/updates on top to consider instructions as vectors instead of
floating when they use the VectorRF. Some counters added to all the
models to keep faithful counts.

Change-Id: Id8f162a525240dfd7ba884c5a4d9fa69f4050101
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/2706
Reviewed-by: Anthony Gutierrez <anthony.gutierrez@amd.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>

3 files changed, 23 insertions, 0 deletions

diff --git a/src/arch/alpha/faults.cc b/src/arch/alpha/faults.cc
index 8a6e469f2..59d95000b 100644
--- a/src/arch/alpha/faults.cc
+++ b/src/arch/alpha/faults.cc
@@ -98,6 +98,13 @@ FaultName FloatEnableFault::_name = "fen";
 FaultVect FloatEnableFault::_vect = 0x0581;
 FaultStat FloatEnableFault::_count;
 
+/* We use the same fault vector, as for the guest system these should be the
+ * same, but for host purposes, having differentiation is helpful for
+ * debug/monitorization purposes. */
+FaultName VectorEnableFault::_name = "ven";
+FaultVect VectorEnableFault::_vect = 0x0581;
+FaultStat VectorEnableFault::_count;
+
 FaultName PalFault::_name = "pal";
 FaultVect PalFault::_vect = 0x2001;
 FaultStat PalFault::_count;
diff --git a/src/arch/alpha/faults.hh b/src/arch/alpha/faults.hh
index 80e3ae5e1..07789a22e 100644
--- a/src/arch/alpha/faults.hh
+++ b/src/arch/alpha/faults.hh
@@ -299,6 +299,19 @@ class FloatEnableFault : public AlphaFault
     FaultStat & countStat() {return _count;}
 };
 
+class VectorEnableFault : public AlphaFault
+{
+  private:
+    static FaultName _name;
+    static FaultVect _vect;
+    static FaultStat _count;
+
+  public:
+    FaultName name() const {return _name;}
+    FaultVect vect() {return _vect;}
+    FaultStat & countStat() {return _count;}
+};
+
 class PalFault : public AlphaFault
 {
   private:
diff --git a/src/arch/alpha/isa/fp.isa b/src/arch/alpha/isa/fp.isa
index 6213c8e08..ea692aeef 100644
--- a/src/arch/alpha/isa/fp.isa
+++ b/src/arch/alpha/isa/fp.isa
@@ -50,6 +50,9 @@ output exec {{
         }
         return fault;
     }
+    inline Fault checkVectorEnableFault(CPU_EXEC_CONTEXT *xc) {
+        return std::make_shared<VectorEnableFault>();
+    }
 }};
 
 output header {{