riscv: [Patch 8/5] Added some regression tests to RISC-V

This patch is the eighth patch in a series adding RISC-V to gem5, and
third of the bonus patches to the original series of five. It adds some
regression tests to RISC-V.

Regression tests included:
- se/00.hello
- se/02.insttest (split into several binaries which are not included due
  to large size)

The tests added to 00.insttest will need to be build manually; to
facilitate this, a Makefile is included. The required toolchain and
compiler (riscv64-unknown-elf-gcc) can be built from the riscv-tools
GitHub repository at https://github.com/riscv/riscv-tools.

Note that because EBREAK only makes sense when gdb is running or while in
FS mode, it is not included in the linux-rv64i insttest. ERET is not
included because it does not make sense in SE mode and, in fact, causes
a panic by design.

Note also that not every system call is tested in linux-rv64i; of the ones
defined in linux/process.hh, some have been given numbers but not
definitions for the toolchain, or are merely stubs that always return 0. Of
the ones that do work properly, only a subset are tested due to similar
functionality.

Signed-off by: Alec Roelke

Signed-off by: Jason Lowe-Power <jason@lowepower.com>

1 files changed, 144 insertions, 0 deletions

diff --git a/tests/test-progs/insttest/src/riscv/rv64m.h b/tests/test-progs/insttest/src/riscv/rv64m.h
new file mode 100644
index 000000000..b93a7d623
--- /dev/null
+++ b/tests/test-progs/insttest/src/riscv/rv64m.h
@@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2016 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 "insttest.h"
+
+namespace M
+{
+
+inline int64_t
+mul(int64_t rs1, int64_t rs2)
+{
+    int64_t rd = 0;
+    ROP("mul", rd, rs1, rs2);
+    return rd;
+}
+
+inline int64_t
+mulh(int64_t rs1, int64_t rs2)
+{
+    int64_t rd = 0;
+    ROP("mulh", rd, rs1, rs2);
+    return rd;
+}
+
+inline int64_t
+mulhsu(int64_t rs1, uint64_t rs2)
+{
+    int64_t rd = 0;
+    ROP("mulhsu", rd, rs1, rs2);
+    return rd;
+}
+
+inline uint64_t
+mulhu(uint64_t rs1, uint64_t rs2)
+{
+    uint64_t rd = 0;
+    ROP("mulhu", rd, rs1, rs2);
+    return rd;
+}
+
+inline int64_t
+div(int64_t rs1, int64_t rs2)
+{
+    int64_t rd = 0;
+    ROP("div", rd, rs1, rs2);
+    return rd;
+}
+
+inline uint64_t
+divu(uint64_t rs1, uint64_t rs2)
+{
+    uint64_t rd = 0;
+    ROP("divu", rd, rs1, rs2);
+    return rd;
+}
+
+inline int64_t
+rem(int64_t rs1, int64_t rs2)
+{
+    int64_t rd = 0;
+    ROP("rem", rd, rs1, rs2);
+    return rd;
+}
+
+inline uint64_t
+remu(uint64_t rs1, uint64_t rs2)
+{
+    uint64_t rd = 0;
+    ROP("remu", rd, rs1, rs2);
+    return rd;
+}
+
+inline int64_t
+mulw(int64_t rs1, int64_t rs2)
+{
+    int64_t rd = 0;
+    ROP("mulw", rd, rs1, rs2);
+    return rd;
+}
+
+inline int64_t
+divw(int64_t rs1, int64_t rs2)
+{
+    int64_t rd = 0;
+    ROP("divw", rd, rs1, rs2);
+    return rd;
+}
+
+inline uint64_t
+divuw(uint64_t rs1, uint64_t rs2)
+{
+    uint64_t rd = 0;
+    ROP("divuw", rd, rs1, rs2);
+    return rd;
+}
+
+inline int64_t
+remw(int64_t rs1, int64_t rs2)
+{
+    int64_t rd = 0;
+    ROP("remw", rd, rs1, rs2);
+    return rd;
+}
+
+inline uint64_t
+remuw(uint64_t rs1, uint64_t rs2)
+{
+    uint64_t rd = 0;
+    ROP("remuw", rd, rs1, rs2);
+    return rd;
+}
+
+} // namespace M