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author | Kevin Lim <ktlim@umich.edu> | 2005-02-25 18:00:49 -0500 |
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committer | Kevin Lim <ktlim@umich.edu> | 2005-02-25 18:00:49 -0500 |
commit | 5c4714c1a91680a0253f866958a9db80cd8decb2 (patch) | |
tree | 6c73396b0418a7d8576c289e31839e8e664bbca0 /cpu/beta_cpu/sat_counter.cc | |
parent | e8a564b0fdd8c5b6ae8f73613e3ad25005556ec5 (diff) | |
download | gem5-5c4714c1a91680a0253f866958a9db80cd8decb2.tar.xz |
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
Diffstat (limited to 'cpu/beta_cpu/sat_counter.cc')
-rw-r--r-- | cpu/beta_cpu/sat_counter.cc | 43 |
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; + } +} |