Initial light-weight OoO CPU checkin, along with gcc-3.4 fixes.

SConscript:
    Include new files.
arch/alpha/isa_desc:
    Make the eaCompPtr and memAccPtr non-const so that execute() can be called on them.
arch/alpha/isa_traits.hh:
    Add enum for total number of data registers.
arch/isa_parser.py:
base/traceflags.py:
    Include new light-weight OoO CPU model.
cpu/base_dyn_inst.cc:
cpu/base_dyn_inst.hh:
    Changes to abstract more away from the base dyn inst class.
cpu/beta_cpu/2bit_local_pred.cc:
cpu/beta_cpu/2bit_local_pred.hh:
cpu/beta_cpu/tournament_pred.cc:
cpu/beta_cpu/tournament_pred.hh:
    Remove redundant SatCounter class.
cpu/beta_cpu/alpha_dyn_inst.cc:
cpu/beta_cpu/alpha_full_cpu.cc:
cpu/beta_cpu/alpha_full_cpu.hh:
cpu/beta_cpu/bpred_unit.cc:
cpu/beta_cpu/inst_queue.cc:
cpu/beta_cpu/mem_dep_unit.cc:
cpu/beta_cpu/ras.cc:
cpu/beta_cpu/rename_map.cc:
cpu/beta_cpu/rename_map.hh:
cpu/beta_cpu/rob.cc:
    Fix for gcc-3.4
cpu/beta_cpu/alpha_dyn_inst.hh:
cpu/beta_cpu/alpha_dyn_inst_impl.hh:
    Fixes for gcc-3.4.
    Include more variables and functions that are specific to AlphaDynInst which were once in BaseDynInst.
cpu/beta_cpu/alpha_full_cpu_builder.cc:
    Make params match the current params inherited from BaseCPU.
cpu/beta_cpu/alpha_full_cpu_impl.hh:
    Fixes for gcc-3.4
cpu/beta_cpu/full_cpu.cc:
    Use new params pointer in BaseCPU.
    Fix for gcc-3.4.
cpu/beta_cpu/full_cpu.hh:
    Use new params class from BaseCPU.
cpu/beta_cpu/iew_impl.hh:
    Remove unused function.
cpu/simple_cpu/simple_cpu.cc:
    Remove unused global variable.
cpu/static_inst.hh:
    Include OoODynInst for new lightweight OoO CPU

--HG--
extra : convert_revision : 34d9f2e64ca0313377391e0d059bf09c040286fa

1 files changed, 62 insertions, 0 deletions

diff --git a/cpu/beta_cpu/sat_counter.hh b/cpu/beta_cpu/sat_counter.hh
new file mode 100644
index 000000000..e0f23e13e
--- /dev/null
+++ b/cpu/beta_cpu/sat_counter.hh
@@ -0,0 +1,62 @@
+#ifndef __CPU_BETA_CPU_SAT_COUNTER_HH__
+#define __CPU_BETA_CPU_SAT_COUNTER_HH__
+
+#include <stdint.h>
+
+/**
+ * Private counter class for the internal saturating counters.
+ * Implements an n bit saturating counter and provides methods to
+ * increment, decrement, and read it.
+ * @todo Consider making this something that more closely mimics a
+ * built in class so you can use ++ or --.
+ */
+class SatCounter
+{
+  public:
+    /**
+     * Constructor for the counter.
+     */
+    SatCounter();
+
+    /**
+     * Constructor for the counter.
+     * @param bits How many bits the counter will have.
+     */
+    SatCounter(unsigned bits);
+
+    /**
+     * Constructor for the counter.
+     * @param bits How many bits the counter will have.
+     * @param initial_val Starting value for each counter.
+     */
+    SatCounter(unsigned bits, unsigned initial_val);
+
+    /**
+     * Sets the number of bits.
+     */
+    void setBits(unsigned bits);
+
+    /**
+     * Increments the counter's current value.
+     */
+    void increment();
+
+    /**
+     * Decrements the counter's current value.
+     */
+    void decrement();
+
+    /**
+     * Read the counter's value.
+     */
+    const uint8_t read() const
+    {
+        return counter;
+    }
+
+  private:
+    uint8_t maxVal;
+    uint8_t counter;
+};
+
+#endif // __CPU_BETA_CPU_SAT_COUNTER_HH__