a8f1f9811c
Some of the functions in the Linux toolchain that allocate memory make use of paired LR and SC instructions, which didn't work properly for that toolchain. This patch fixes that so attempting to use those functions doesn't cause an endless loop of failed SC instructions. Change-Id: If27696323dd6229a0277818e3744fbdf7180fca7 Reviewed-on: https://gem5-review.googlesource.com/2340 Maintainer: Alec Roelke <ar4jc@virginia.edu> Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
201 lines
8.0 KiB
C++
201 lines
8.0 KiB
C++
/*
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* Copyright (c) 2016 The University of Virginia
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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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* Authors: Alec Roelke
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*/
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#include <cstdint>
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#include <limits>
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#include "insttest.h"
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#include "rv64a.h"
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int main()
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{
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using namespace std;
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using namespace insttest;
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// Memory (LR.W, SC.W)
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expect<pair<int64_t, int64_t>>({-1, 256}, []{
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int32_t mem = -1;
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int64_t rs2 = 256;
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int64_t rd;
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pair<int64_t, uint64_t> result;
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do {
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rd = A::lr_w(mem);
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result = A::sc_w(rs2, mem);
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} while (result.second == 1);
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return pair<int64_t, uint64_t>(rd, result.first);
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}, "lr.w/sc.w");
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expect<pair<bool, int64_t>>({true, 200}, []{
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int32_t mem = 200;
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pair<int64_t, uint64_t> result = A::sc_w(50, mem);
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return pair<bool, int64_t>(result.second == 1, mem);
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}, "sc.w, no preceding lr.d");
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// AMOSWAP.W
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expect<pair<int64_t, int64_t>>({65535, 255},
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[]{return A::amoswap_w(255, 65535);}, "amoswap.w");
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expect<pair<int64_t, int64_t>>({0xFFFFFFFF, -1},
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[]{return A::amoswap_w(0xFFFFFFFF, 0xFFFFFFFF);},
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"amoswap.w, sign extend");
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expect<pair<int64_t, int64_t>>({0x0000000180000000LL, -1},
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[]{return A::amoswap_w(0x00000001FFFFFFFFLL,
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0x7FFFFFFF80000000LL);},
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"amoswap.w, truncate");
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// AMOADD.W
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expect<pair<int64_t, int64_t>>({256, 255},
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[]{return A::amoadd_w(255, 1);}, "amoadd.w");
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expect<pair<int64_t, int64_t>>({0, -1},
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[]{return A::amoadd_w(0xFFFFFFFF, 1);},
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"amoadd.w, truncate/overflow");
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expect<pair<int64_t, int64_t>>({0xFFFFFFFF, 0x7FFFFFFF},
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[]{return A::amoadd_w(0x7FFFFFFF, 0x80000000);},
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"amoadd.w, sign extend");
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// AMOXOR.W
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expect<pair<uint64_t, uint64_t>>({0xFFFFFFFFAAAAAAAALL, -1},
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[]{return A::amoxor_w(-1, 0x5555555555555555LL);},
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"amoxor.w, truncate");
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expect<pair<uint64_t, uint64_t>>({0x80000000, -1},
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[]{return A::amoxor_w(0xFFFFFFFF, 0x7FFFFFFF);},
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"amoxor.w, sign extend");
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// AMOAND.W
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expect<pair<uint64_t, uint64_t>>({0xFFFFFFFF00000000LL, -1},
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[]{return A::amoand_w(-1, 0);}, "amoand.w, truncate");
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expect<pair<uint64_t, uint64_t>>({0x0000000080000000LL, -1},
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[]{return A::amoand_w(0xFFFFFFFF,numeric_limits<int32_t>::min());},
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"amoand.w, sign extend");
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// AMOOR.W
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expect<pair<uint64_t, uint64_t>>({0x00000000FFFFFFFFLL, 0},
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[]{return A::amoor_w(0, -1);}, "amoor.w, truncate");
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expect<pair<uint64_t, uint64_t>>({0x0000000080000000LL, 0},
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[]{return A::amoor_w(0, numeric_limits<int32_t>::min());},
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"amoor.w, sign extend");
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// AMOMIN.W
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expect<pair<int64_t, int64_t>>({0x7FFFFFFF00000001LL, 1},
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[]{return A::amomin_w(0x7FFFFFFF00000001LL, 0xFFFFFFFF000000FF);},
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"amomin.w, truncate");
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expect<pair<int64_t, int64_t>>({0x00000000FFFFFFFELL, -1},
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[]{return A::amomin_w(0xFFFFFFFF, -2);}, "amomin.w, sign extend");
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// AMOMAX.W
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expect<pair<int64_t, int64_t>>({0x70000000000000FFLL, 1},
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[]{return A::amomax_w(0x7000000000000001LL,0x7FFFFFFF000000FFLL);},
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"amomax.w, truncate");
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expect<pair<int64_t, int64_t>>({-1, numeric_limits<int32_t>::min()},
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[]{return A::amomax_w(numeric_limits<int32_t>::min(), -1);},
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"amomax.w, sign extend");
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// AMOMINU.W
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expect<pair<uint64_t, uint64_t>>({0x0FFFFFFF000000FFLL, -1},
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[]{return A::amominu_w(0x0FFFFFFFFFFFFFFFLL, 0xFFFFFFFF000000FF);},
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"amominu.w, truncate");
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expect<pair<uint64_t, uint64_t>>({0x0000000080000000LL, -1},
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[]{return A::amominu_w(0x00000000FFFFFFFFLL, 0x80000000);},
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"amominu.w, sign extend");
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// AMOMAXU.W
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expect<pair<uint64_t, uint64_t>>({-1, 0},
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[]{return A::amomaxu_w(0xFFFFFFFF00000000LL,
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0x00000000FFFFFFFFLL);},
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"amomaxu.w, truncate");
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expect<pair<uint64_t, uint64_t>>(
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{0xFFFFFFFF, numeric_limits<int32_t>::min()},
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[]{return A::amomaxu_w(0x80000000, 0xFFFFFFFF);},
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"amomaxu.w, sign extend");
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// Memory (LR.D, SC.D)
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expect<pair<int64_t, int64_t>>({-1, 256}, []{
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int64_t mem = -1;
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int64_t rs2 = 256;
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int64_t rd;
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pair<int64_t, uint64_t> result;
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do {
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rd = A::lr_d(mem);
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result = A::sc_d(rs2, mem);
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} while (result.second == 1);
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return pair<int64_t, uint64_t>(rd, result.first);
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}, "lr.d/sc.d");
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expect<pair<bool, int64_t>>({true, 200}, []{
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int64_t mem = 200;
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pair<int64_t, uint64_t> result = A::sc_d(50, mem);
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return pair<bool, int64_t>(result.second == 1, mem);
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}, "sc.d, no preceding lr.d");
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// AMOSWAP.D
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expect<pair<int64_t, int64_t>>({1, -1}, []{return A::amoswap_d(-1, 1);},
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"amoswap.d");
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// AMOADD.D
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expect<pair<int64_t, int64_t>>({0x7000000000000000LL,0x0FFFFFFFFFFFFFFFLL},
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[]{return A::amoadd_d(0x0FFFFFFFFFFFFFFFLL,0x6000000000000001LL);},
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"amoadd.d");
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expect<pair<int64_t, int64_t>>({0, 0x7FFFFFFFFFFFFFFFLL},
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[]{return A::amoadd_d(0x7FFFFFFFFFFFFFFFLL,0x8000000000000001LL);},
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"amoadd.d, overflow");
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// AMOXOR.D
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expect<pair<int64_t, int64_t>>({-1, 0xAAAAAAAAAAAAAAAALL},
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[]{return A::amoxor_d(0xAAAAAAAAAAAAAAAALL,0x5555555555555555LL);},
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"amoxor.d (1)");
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expect<pair<int64_t, int64_t>>({0, 0xAAAAAAAAAAAAAAAALL},
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[]{return A::amoxor_d(0xAAAAAAAAAAAAAAAALL,0xAAAAAAAAAAAAAAAALL);},
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"amoxor.d (0)");
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// AMOAND.D
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expect<pair<int64_t, int64_t>>({0xAAAAAAAAAAAAAAAALL, -1},
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[]{return A::amoand_d(-1, 0xAAAAAAAAAAAAAAAALL);}, "amoand.d");
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// AMOOR.D
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expect<pair<int64_t, int64_t>>({-1, 0xAAAAAAAAAAAAAAAALL},
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[]{return A::amoor_d(0xAAAAAAAAAAAAAAAALL, 0x5555555555555555LL);},
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"amoor.d");
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// AMOMIN.D
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expect<pair<int64_t, int64_t>>({-1, -1},
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[]{return A::amomin_d(-1, 0);}, "amomin.d");
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// AMOMAX.D
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expect<pair<int64_t, int64_t>>({0, -1}, []{return A::amomax_d(-1, 0);},
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"amomax.d");
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// AMOMINU.D
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expect<pair<uint64_t, uint64_t>>({0, -1},
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[]{return A::amominu_d(-1, 0);}, "amominu.d");
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// AMOMAXU.D
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expect<pair<uint64_t, uint64_t>>({-1, -1}, []{return A::amomaxu_d(-1, 0);},
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"amomaxu.d");
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return 0;
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}
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