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, 43 insertions, 0 deletions

diff --git a/cpu/beta_cpu/sat_counter.cc b/cpu/beta_cpu/sat_counter.cc
new file mode 100644
index 000000000..da095c3e1
--- /dev/null
+++ b/cpu/beta_cpu/sat_counter.cc
@@ -0,0 +1,43 @@
+#include "base/misc.hh"
+#include "cpu/beta_cpu/sat_counter.hh"
+
+SatCounter::SatCounter()
+    : maxVal(0), counter(0)
+{
+}
+
+SatCounter::SatCounter(unsigned bits)
+    : maxVal((1 << bits) - 1), counter(0)
+{
+}
+
+SatCounter::SatCounter(unsigned bits, unsigned initial_val)
+    : maxVal((1 << bits) - 1), counter(initial_val)
+{
+    // Check to make sure initial value doesn't exceed the max counter value.
+    if (initial_val > maxVal) {
+        panic("BP: Initial counter value exceeds max size.");
+    }
+}
+
+void
+SatCounter::setBits(unsigned bits)
+{
+    maxVal = (1 << bits) - 1;
+}
+
+void
+SatCounter::increment()
+{
+    if(counter < maxVal) {
+        ++counter;
+    }
+}
+
+void
+SatCounter::decrement()
+{
+    if(counter > 0) {
+        --counter;
+    }
+}