mem-ruby: Remove maskHighOrderBits

Function was not being used. If needed, src/base/bitfield.hh's
mbits can be used instead:

maskHighOrderBits(addr, pos) == mbits<Addr>(addr, 64-pos, 0)

Change-Id: I3abd041f8d256ec157ba7502182d8588721c2a05
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/21082
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Anthony Gutierrez <anthony.gutierrez@amd.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
Tested-by: kokoro <noreply+kokoro@google.com>

2 files changed, 0 insertions, 14 deletions

diff --git a/src/mem/ruby/common/Address.cc b/src/mem/ruby/common/Address.cc
index edb417738..af8ddb437 100644
--- a/src/mem/ruby/common/Address.cc
+++ b/src/mem/ruby/common/Address.cc
@@ -59,19 +59,6 @@ maskLowOrderBits(Addr addr, unsigned int number)
 }
 
 Addr
-maskHighOrderBits(Addr addr, unsigned int number)
-{
-    Addr mask;
-
-    if (number >= ADDRESS_WIDTH - 1) {
-        mask = ~0;
-    } else {
-        mask = (Addr)~0 >> number;
-    }
-    return (addr & mask);
-}
-
-Addr
 shiftLowOrderBits(Addr addr, unsigned int number)
 {
     return (addr >> number);
diff --git a/src/mem/ruby/common/Address.hh b/src/mem/ruby/common/Address.hh
index 17490c448..6aed96a1b 100644
--- a/src/mem/ruby/common/Address.hh
+++ b/src/mem/ruby/common/Address.hh
@@ -40,7 +40,6 @@ const uint32_t ADDRESS_WIDTH = 64; // address width in bytes
 // selects bits inclusive
 Addr bitSelect(Addr addr, unsigned int small, unsigned int big);
 Addr maskLowOrderBits(Addr addr, unsigned int number);
-Addr maskHighOrderBits(Addr addr, unsigned int number);
 Addr shiftLowOrderBits(Addr addr, unsigned int number);
 Addr getOffset(Addr addr);
 Addr makeLineAddress(Addr addr);