mem-ruby: Remove bitRemove

bitRemove is not being used anywhere. If needed, can be used
as src/base/bitfield.hh's bits:

bitRemove(addr, small, big) ==
    ((bits<Addr>(addr, 63, big + 1) << small) |
    bits<Addr>(addr, small, 0))

Change-Id: I45fd3bc0271ccb659d6a94e3dd00ca095dfd6aa7
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/21081
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.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, 26 deletions

diff --git a/src/mem/ruby/common/Address.cc b/src/mem/ruby/common/Address.cc
index f0aa71ac6..edb417738 100644
--- a/src/mem/ruby/common/Address.cc
+++ b/src/mem/ruby/common/Address.cc
@@ -46,31 +46,6 @@ bitSelect(Addr addr, unsigned int small, unsigned int big)
 }
 
 Addr
-bitRemove(Addr addr, unsigned int small, unsigned int big)
-{
-    assert(big >= small);
-
-    if (small >= ADDRESS_WIDTH - 1) {
-        return addr;
-    } else if (big >= ADDRESS_WIDTH - 1) {
-        Addr mask = (Addr)~0 >> small;
-        return (addr & mask);
-    } else if (small == 0) {
-        Addr mask = (Addr)~0 << big;
-        return (addr & mask);
-    } else {
-        Addr mask = ~((Addr)~0 << small);
-        Addr lower_bits = addr & mask;
-        mask = (Addr)~0 << (big + 1);
-        Addr higher_bits = addr & mask;
-
-        // Shift the valid high bits over the removed section
-        higher_bits = higher_bits >> (big - small + 1);
-        return (higher_bits | lower_bits);
-    }
-}
-
-Addr
 maskLowOrderBits(Addr addr, unsigned int number)
 {
   Addr mask;
diff --git a/src/mem/ruby/common/Address.hh b/src/mem/ruby/common/Address.hh
index ded6f6f12..17490c448 100644
--- a/src/mem/ruby/common/Address.hh
+++ b/src/mem/ruby/common/Address.hh
@@ -39,7 +39,6 @@ const uint32_t ADDRESS_WIDTH = 64; // address width in bytes
 
 // selects bits inclusive
 Addr bitSelect(Addr addr, unsigned int small, unsigned int big);
-Addr bitRemove(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);