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mem-ruby: Remove bitRemove

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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>
This commit is contained in:
Daniel R. Carvalho
2019-09-07 10:23:21 +02:00
committed by Daniel Carvalho
parent 4c4520ca00
commit 0219c49bdf
2 changed files with 0 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
src/mem/ruby/common/Address.cc
View File

@@ -45,31 +45,6 @@ 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)
{

1
src/mem/ruby/common/Address.hh
View File

@@ -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);