--- /dev/null
+/*
+ * Copyright (c) 2017 The University of Virginia
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Alec Roelke
+ */
+
+#include <limits>
+
+#include "insttest.h"
+#include "rv64c.h"
+#include "rv64d.h"
+
+int main()
+{
+ using namespace insttest;
+ using namespace std;
+
+ // C.LWSP
+ expect<bool>(true, []{
+ uint64_t lw = 0, lwsp = -1;
+ int64_t i = 16;
+ asm volatile("lw %0,%2(sp);"
+ "c.lwsp %1,%2(sp);"
+ : "=r" (lw), "=r" (lwsp)
+ : "i" (i));
+ return lw == lwsp;
+ }, "c.lwsp");
+
+ // C.LDSP
+ expect<bool>(true, []{
+ uint64_t ld = 0, ldsp = -1;
+ int64_t i = 8;
+ asm volatile("ld %0,%2(sp);"
+ "c.ldsp %1,%2(sp);"
+ : "=r" (ld), "=r" (ldsp)
+ : "i" (i));
+ return ld == ldsp;
+ }, "c.ldsp");
+
+ // C.FLDSP
+ expect<bool>(true, []{
+ double fld = 0.0, fldsp = -1.0;
+ int64_t i = 32;
+ asm volatile("fld %0,%2(sp);"
+ "c.fldsp %1,%2(sp);"
+ : "=f" (fld), "=f" (fldsp)
+ : "i" (i));
+ return D::bits(fld) == D::bits(fldsp);
+ }, "c.fldsp");
+
+ // C.SWSP
+ expect<bool>(true, []{
+ int64_t value = -1, result = 0;
+ asm volatile("addi sp,sp,-8;"
+ "c.swsp %1,8(sp);"
+ "lw %0,8(sp);"
+ "addi sp,sp,8;"
+ : "=r" (result)
+ : "r" (value)
+ : "memory");
+ return value == result;
+ }, "c.swsp");
+
+ // C.SDSP
+ expect<bool>(true, []{
+ int64_t value = -1, result = 0;
+ asm volatile("addi sp,sp,-8;"
+ "c.sdsp %1,8(sp);"
+ "ld %0,8(sp);"
+ "addi sp,sp,8;"
+ : "=r" (result)
+ : "r" (value)
+ : "memory");
+ return value == result;
+ }, "c.sdsp");
+
+ // C.FSDSP
+ expect<bool>(true, []{
+ double value = 0.1, result = numeric_limits<double>::signaling_NaN();
+ asm volatile("addi sp,sp,-8;"
+ "c.fsdsp %1,8(sp);"
+ "fld %0,8(sp);"
+ "addi sp,sp,8;"
+ : "=f" (result)
+ : "f" (value)
+ : "memory");
+ return value == result;
+ }, "c.fsdsp");
+
+ // C.LW, C.LD, C.FLD
+ expect<int64_t>(458752,
+ []{return C::c_load<int32_t, int64_t>(0x00070000);},
+ "c.lw, positive");
+ expect<int64_t>(numeric_limits<int32_t>::min(),
+ []{return C::c_load<int32_t, int64_t>(0x80000000);},
+ "c.lw, negative");
+ expect<int64_t>(30064771072,
+ []{return C::c_load<int64_t, int64_t>(30064771072);}, "c.ld");
+ expect<double>(3.1415926, []{return C::c_load<double, double>(3.1415926);},
+ "c.fld");
+
+ // C.SW, C.SD, C.FSD
+ expect<uint32_t>(0xFFFFFFFF, []{return C::c_store<int32_t>(-1);}, "c.sw");
+ expect<uint64_t>(-1, []{return C::c_store<int64_t>(-1);}, "c.sd");
+ expect<double>(1.61803398875,
+ []{return C::c_store<double>(1.61803398875);}, "c.fsd");
+
+ // C.J, C.JR, C.JALR
+ expect<bool>(true, []{return C::c_j();}, "c.j");
+ expect<bool>(true, []{return C::c_jr();}, "c.jr");
+ expect<bool>(true, []{return C::c_jalr();}, "c.jalr");
+
+ // C.BEQZ
+ expect<bool>(true, []{return C::c_beqz(0);}, "c.beqz, zero");
+ expect<bool>(false, []{return C::c_beqz(7);}, "c.beqz, not zero");
+
+ // C.BNEZ
+ expect<bool>(true, []{return C::c_bnez(15);}, "c.bnez, not zero");
+ expect<bool>(false, []{return C::c_bnez(0);}, "c.bnez, zero");
+
+ // C.LI
+ expect<int64_t>(1, []{return C::c_li(1);}, "c.li");
+ expect<int64_t>(-1, []{return C::c_li(-1);}, "c.li, sign extend");
+
+ // C.LUI
+ expect<int64_t>(4096, []{return C::c_lui(1);}, "c.lui");
+ // Note that sign extension can't be tested here because apparently the
+ // compiler doesn't allow the 6th (sign) bit of the immediate to be 1
+
+ // C.ADDI
+ expect<int64_t>(15, []{return C::c_addi(7, 8);}, "c.addi");
+
+ // C.ADDIW
+ expect<int64_t>(15, []{return C::c_addiw(8, 7);}, "c.addiw");
+ expect<int64_t>(1, []{return C::c_addiw(0xFFFFFFFF, 2);},
+ "c.addiw, overflow");
+ expect<int64_t>(1, []{return C::c_addiw(0x100000001, 0);},
+ "c.addiw, truncate");
+
+ // C.ADDI16SP
+ expect<bool>(true, []{
+ uint64_t sp = 0, rd = 0;
+ const int16_t i = 4;
+ asm volatile("mv %0,sp;"
+ "c.addi16sp sp,%2;"
+ "mv %1,sp;"
+ "mv sp,%0;"
+ : "+r" (sp), "=r" (rd)
+ : "i" (i*16));
+ return rd == sp + i*16;
+ }, "c.addi16sp");
+
+ // C.ADDI4SPN
+ expect<bool>(true, []{
+ uint64_t sp = 0, rd = 0;
+ const int16_t i = 3;
+ asm volatile("mv %0,sp;"
+ "c.addi4spn %1,sp,%2;"
+ : "=r" (sp), "=r" (rd)
+ : "i" (i*4));
+ return rd == sp + i*4;
+ }, "c.addi4spn");
+
+ // C.SLLI
+ expect<uint64_t>(16, []{return C::c_slli(1, 4);}, "c.slli");
+ expect<uint64_t>(0, []{return C::c_slli(8, 61);}, "c.slli, overflow");
+
+ // C.SRLI
+ expect<uint64_t>(4, []{return C::c_srli(128, 5);}, "c.srli");
+ expect<uint64_t>(0, []{return C::c_srli(128, 8);}, "c.srli, overflow");
+ expect<uint64_t>(1, []{return C::c_srli(-1, 63);}, "c.srli, -1");
+
+ // C.SRAI
+ expect<uint64_t>(4, []{return C::c_srai(128, 5);}, "c.srai");
+ expect<uint64_t>(0, []{return C::c_srai(128, 8);}, "c.srai, overflow");
+ expect<uint64_t>(-1, []{return C::c_srai(-2, 63);}, "c.srai, -1");
+
+ // C.ANDI
+ expect<uint64_t>(0, []{return C::c_andi(-1, 0);}, "c.andi (0)");
+ expect<uint64_t>(0x1234567812345678ULL,
+ []{return C::c_andi(0x1234567812345678ULL, -1);}, "c.andi (1)");
+
+ // C.MV
+ expect<int64_t>(1024, []{return C::c_mv(1024);}, "c.mv");
+
+ // C.ADD
+ expect<int64_t>(15, []{return C::c_add(10, 5);}, "c.add");
+
+ // C.AND
+ expect<uint64_t>(0, []{return C::c_and(-1, 0);}, "c.and (0)");
+ expect<uint64_t>(0x1234567812345678ULL,
+ []{return C::c_and(0x1234567812345678ULL, -1);}, "c.and (-1)");
+
+ // C.OR
+ expect<uint64_t>(-1,
+ []{return C::c_or(0xAAAAAAAAAAAAAAAAULL,
+ 0x5555555555555555ULL);},
+ "c.or (1)");
+ expect<uint64_t>(0xAAAAAAAAAAAAAAAAULL,
+ []{return C::c_or(0xAAAAAAAAAAAAAAAAULL,
+ 0xAAAAAAAAAAAAAAAAULL);},
+ "c.or (A)");
+
+ // C.XOR
+ expect<uint64_t>(-1,
+ []{return C::c_xor(0xAAAAAAAAAAAAAAAAULL,
+ 0x5555555555555555ULL);},
+ "c.xor (1)");
+ expect<uint64_t>(0,
+ []{return C::c_xor(0xAAAAAAAAAAAAAAAAULL,
+ 0xAAAAAAAAAAAAAAAAULL);},
+ "c.xor (0)");
+
+ // C.SUB
+ expect<int64_t>(65535, []{return C::c_sub(65536, 1);}, "c.sub");
+
+ // C.ADDW
+ expect<int64_t>(1073742078, []{return C::c_addw(0x3FFFFFFF, 255);},
+ "c.addw");
+ expect<int64_t>(-1, []{return C::c_addw(0x7FFFFFFF, 0x80000000);},
+ "c.addw, overflow");
+ expect<int64_t>(65536, []{return C::c_addw(0xFFFFFFFF0000FFFFLL, 1);},
+ "c.addw, truncate");
+
+ // C.SUBW
+ expect<int64_t>(65535, []{return C::c_subw(65536, 1);}, "c.subw");
+ expect<int64_t>(-1, []{return C::c_subw(0x7FFFFFFF, 0x80000000);},
+ "c.subw, \"overflow\"");
+ expect<int64_t>(0,
+ []{return C::c_subw(0xAAAAAAAAFFFFFFFFULL,0x55555555FFFFFFFFULL);},
+ "c.subw, truncate");
+}
\ No newline at end of file
--- /dev/null
+/*
+ * Copyright (c) 2017 The University of Virginia
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Alec Roelke
+ */
+
+#pragma once
+
+#include <cstdint>
+#include <type_traits>
+
+#include "insttest.h"
+
+#define CIOP(op, r, imm) asm volatile(op " %0,%1" : "+r" (r) : "i" (imm));
+#define CROP(op, rd, rs) asm volatile(op " %0,%1" : "+r" (rd) : "r" (rs))
+
+namespace C
+{
+
+inline int64_t
+c_li(const int8_t imm)
+{
+ int64_t rd = 0;
+ CIOP("c.li", rd, imm);
+ return rd;
+}
+
+inline int64_t
+c_lui(const int8_t imm)
+{
+ int64_t rd = 0;
+ CIOP("c.lui", rd, imm);
+ return rd;
+}
+
+inline int64_t
+c_addi(int64_t r, const int8_t imm)
+{
+ CIOP("c.addi", r, imm);
+ return r;
+}
+
+inline int64_t
+c_addiw(int64_t r, const int8_t imm)
+{
+ CIOP("c.addiw", r, imm);
+ return r;
+}
+
+inline uint64_t
+c_addi4spn(const int16_t imm)
+{
+ uint64_t rd = 0;
+ asm volatile("c.addi4spn %0,sp,%1" : "=r" (rd) : "i" (imm));
+ return rd;
+}
+
+inline uint64_t
+c_slli(uint64_t r, uint8_t shamt)
+{
+ CIOP("c.slli", r, shamt);
+ return r;
+}
+
+inline uint64_t
+c_srli(uint64_t r, uint8_t shamt)
+{
+ CIOP("c.srli", r, shamt);
+ return r;
+}
+
+inline int64_t
+c_srai(int64_t r, uint8_t shamt)
+{
+ CIOP("c.srai", r, shamt);
+ return r;
+}
+
+inline uint64_t
+c_andi(uint64_t r, uint8_t imm)
+{
+ CIOP("c.andi", r, imm);
+ return r;
+}
+
+inline int64_t
+c_mv(int64_t rs)
+{
+ int64_t rd = 0;
+ CROP("c.mv", rd, rs);
+ return rd;
+}
+
+inline int64_t
+c_add(int64_t rd, int64_t rs)
+{
+ CROP("c.add", rd, rs);
+ return rd;
+}
+
+inline uint64_t
+c_and(int64_t rd, int64_t rs)
+{
+ CROP("c.and", rd, rs);
+ return rd;
+}
+
+inline uint64_t
+c_or(int64_t rd, int64_t rs)
+{
+ CROP("c.or", rd, rs);
+ return rd;
+}
+
+inline uint64_t
+c_xor(int64_t rd, int64_t rs)
+{
+ CROP("c.xor", rd, rs);
+ return rd;
+}
+
+inline int64_t
+c_sub(int64_t rd, int64_t rs)
+{
+ CROP("c.sub", rd, rs);
+ return rd;
+}
+
+inline int64_t
+c_addw(int64_t rd, int64_t rs)
+{
+ CROP("c.addw", rd, rs);
+ return rd;
+}
+
+inline int64_t
+c_subw(int64_t rd, int64_t rs)
+{
+ CROP("c.subw", rd, rs);
+ return rd;
+}
+
+template<typename M, typename R> inline R
+c_load(M m)
+{
+ R r = 0;
+ switch (sizeof(M))
+ {
+ case 4:
+ asm volatile("c.lw %0,0(%1)" : "=r" (r) : "r" (&m) : "memory");
+ break;
+ case 8:
+ if (std::is_floating_point<M>::value)
+ asm volatile("c.fld %0,0(%1)" : "=f" (r) : "r" (&m) : "memory");
+ else
+ asm volatile("c.ld %0,0(%1)" : "=r" (r) : "r" (&m) : "memory");
+ break;
+ }
+ return r;
+}
+
+template<typename M> inline M
+c_store(const M& rs)
+{
+ M mem = 0;
+ switch (sizeof(M))
+ {
+ case 4:
+ asm volatile("c.sw %0,0(%1)" : : "r" (rs), "r" (&mem) : "memory");
+ break;
+ case 8:
+ if (std::is_floating_point<M>::value)
+ asm volatile("c.fsd %0,0(%1)" : : "f" (rs), "r" (&mem) : "memory");
+ else
+ asm volatile("c.sd %0,0(%1)" : : "r" (rs), "r" (&mem) : "memory");
+ break;
+ }
+ return mem;
+}
+
+inline bool
+c_j()
+{
+ asm volatile goto("c.j %l[jallabel]" : : : : jallabel);
+ return false;
+ jallabel:
+ return true;
+}
+
+inline bool
+c_jr()
+{
+ uint64_t a = 0;
+ asm volatile("auipc %0,0;"
+ "c.addi %0,12;"
+ "c.jr %0;"
+ "addi %0,zero,0;"
+ "addi %0,%0,0;"
+ : "+r" (a));
+ return a > 0;
+}
+
+inline bool
+c_jalr()
+{
+ int64_t a = 0;
+ asm volatile("auipc %0,0;"
+ "c.addi %0,12;"
+ "c.jalr %0;"
+ "addi %0,zero,0;"
+ "sub %0,ra,%0;"
+ : "+r" (a)
+ :
+ : "ra");
+ return a == -4;
+}
+
+inline bool
+c_beqz(int64_t a)
+{
+ asm volatile goto("c.beqz %0,%l[beqlabel]"
+ :
+ : "r" (a)
+ :
+ : beqlabel);
+ return false;
+ beqlabel:
+ return true;
+}
+
+inline bool
+c_bnez(int64_t a)
+{
+ asm volatile goto("c.bnez %0,%l[beqlabel]"
+ :
+ : "r" (a)
+ :
+ : beqlabel);
+ return false;
+ beqlabel:
+ return true;
+}
+
+} // namespace C
\ No newline at end of file
projects / gem5.git / commitdiff