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authorCurtis Dunham <Curtis.Dunham@arm.com>2016-04-05 12:20:19 -0500
committerCurtis Dunham <Curtis.Dunham@arm.com>2016-04-05 12:20:19 -0500
commit76ee011a12ade238d5cbf4b570e1d34d7ba72687 (patch)
tree7254ed0fcc8545103fd197460acc89d75289814e /src/cpu/pred/2bit_local.cc
parent1578d2d0b66d995684cee77b3fe527ed0493d41c (diff)
downloadgem5-76ee011a12ade238d5cbf4b570e1d34d7ba72687.tar.xz
cpu: Implement per-thread GHRs
Branch predictors that use GHRs should index them on a per-thread basis. This makes that so.
Diffstat (limited to 'src/cpu/pred/2bit_local.cc')
-rw-r--r--src/cpu/pred/2bit_local.cc9
1 files changed, 5 insertions, 4 deletions
diff --git a/src/cpu/pred/2bit_local.cc b/src/cpu/pred/2bit_local.cc
index 36ca1593e..9e1c781c5 100644
--- a/src/cpu/pred/2bit_local.cc
+++ b/src/cpu/pred/2bit_local.cc
@@ -78,7 +78,7 @@ LocalBP::reset()
}
void
-LocalBP::btbUpdate(Addr branch_addr, void * &bp_history)
+LocalBP::btbUpdate(ThreadID tid, Addr branch_addr, void * &bp_history)
{
// Place holder for a function that is called to update predictor history when
// a BTB entry is invalid or not found.
@@ -86,7 +86,7 @@ LocalBP::btbUpdate(Addr branch_addr, void * &bp_history)
bool
-LocalBP::lookup(Addr branch_addr, void * &bp_history)
+LocalBP::lookup(ThreadID tid, Addr branch_addr, void * &bp_history)
{
bool taken;
uint8_t counter_val;
@@ -117,7 +117,8 @@ LocalBP::lookup(Addr branch_addr, void * &bp_history)
}
void
-LocalBP::update(Addr branch_addr, bool taken, void *bp_history, bool squashed)
+LocalBP::update(ThreadID tid, Addr branch_addr, bool taken, void *bp_history,
+ bool squashed)
{
assert(bp_history == NULL);
unsigned local_predictor_idx;
@@ -152,7 +153,7 @@ LocalBP::getLocalIndex(Addr &branch_addr)
}
void
-LocalBP::uncondBranch(Addr pc, void *&bp_history)
+LocalBP::uncondBranch(ThreadID tid, Addr pc, void *&bp_history)
{
}