1 files changed, 54 insertions, 0 deletions
diff --git a/cpu/beta_cpu/free_list.cc b/cpu/beta_cpu/free_list.cc
new file mode 100644
index 000000000..542b87471
--- /dev/null
+++ b/cpu/beta_cpu/free_list.cc
@@ -0,0 +1,54 @@
+#include "base/trace.hh"
+
+#include "cpu/beta_cpu/free_list.hh"
+
+SimpleFreeList::SimpleFreeList(unsigned _numLogicalIntRegs,
+                               unsigned _numPhysicalIntRegs,
+                               unsigned _numLogicalFloatRegs,
+                               unsigned _numPhysicalFloatRegs)
+    : numLogicalIntRegs(_numLogicalIntRegs),
+      numPhysicalIntRegs(_numPhysicalIntRegs),
+      numLogicalFloatRegs(_numLogicalFloatRegs),
+      numPhysicalFloatRegs(_numPhysicalFloatRegs),
+      numPhysicalRegs(numPhysicalIntRegs + numPhysicalFloatRegs)
+{
+    DPRINTF(FreeList, "FreeList: Creating new free list object.\n");
+
+    // DEBUG stuff.
+    freeIntRegsScoreboard.resize(numPhysicalIntRegs);
+
+    freeFloatRegsScoreboard.resize(numPhysicalRegs);
+
+    for (PhysRegIndex i = 0; i < numLogicalIntRegs; ++i) {
+        freeIntRegsScoreboard[i] = 0;
+    }
+
+    // Put all of the extra physical registers onto the free list.  This
+    // means excluding all of the base logical registers.
+    for (PhysRegIndex i = numLogicalIntRegs;
+         i < numPhysicalIntRegs; ++i)
+    {
+        freeIntRegs.push(i);
+
+        freeIntRegsScoreboard[i] = 1;
+    }
+
+    for (PhysRegIndex i = 0; i < numPhysicalIntRegs + numLogicalFloatRegs;
+         ++i)
+    {
+        freeFloatRegsScoreboard[i] = 0;
+    }
+
+    // Put all of the extra physical registers onto the free list.  This
+    // means excluding all of the base logical registers.  Because the
+    // float registers' indices start where the physical registers end,
+    // some math must be done to determine where the free registers start.
+    for (PhysRegIndex i = numPhysicalIntRegs + numLogicalFloatRegs;
+         i < numPhysicalRegs; ++i)
+    {
+        freeFloatRegs.push(i);
+
+        freeFloatRegsScoreboard[i] = 1;
+    }
+}
+