4a701c11e4
The function was wrong when number = 63. Also, use the more reliable src/base/bitfield.hh's mbits when posible. maskLowOrderBits has only been kept because SLICC does not accept a templated function. Change-Id: I8dd680da02ceb9e614e2f9cbf8f1ac52cead8d45 Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/21084 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>
82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
/*
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* Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "mem/ruby/common/Address.hh"
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#include "base/bitfield.hh"
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#include "mem/ruby/system/RubySystem.hh"
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Addr
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bitSelect(Addr addr, unsigned int small, unsigned int big)
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{
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assert(big >= small);
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if (big >= ADDRESS_WIDTH - 1) {
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return (addr >> small);
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} else {
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Addr mask = ~((Addr)~0 << (big + 1));
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// FIXME - this is slow to manipulate a 64-bit number using 32-bits
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Addr partial = (addr & mask);
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return (partial >> small);
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}
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}
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Addr
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maskLowOrderBits(Addr addr, unsigned int number)
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{
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return mbits<Addr>(addr, 63, number);
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}
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Addr
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getOffset(Addr addr)
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{
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return bitSelect(addr, 0, RubySystem::getBlockSizeBits() - 1);
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}
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Addr
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makeLineAddress(Addr addr)
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{
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return mbits<Addr>(addr, 63, RubySystem::getBlockSizeBits());
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}
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// returns the next stride address based on line address
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Addr
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makeNextStrideAddress(Addr addr, int stride)
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{
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return makeLineAddress(addr) + RubySystem::getBlockSizeBytes() * stride;
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}
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std::string
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printAddress(Addr addr)
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{
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std::stringstream out;
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out << "[" << std::hex << "0x" << addr << "," << " line 0x"
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<< makeLineAddress(addr) << std::dec << "]";
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return out.str();
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}
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