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authorAlec Roelke <ar4jc@virginia.edu>2016-11-30 17:10:28 -0500
committerAlec Roelke <ar4jc@virginia.edu>2016-11-30 17:10:28 -0500
commite76bfc87640dd236f1527e3f8f19507f0275dad9 (patch)
treeec4c7d3add594e373cbaf5c0509889720113d6fc /src/arch/riscv/isa/main.isa
parentce2722cdd97a31f85d36f6c32637b230e3c25c73 (diff)
downloadgem5-e76bfc87640dd236f1527e3f8f19507f0275dad9.tar.xz
arch: [Patch 1/5] Added RISC-V base instruction set RV64I
First of five patches adding RISC-V to GEM5. This patch introduces the base 64-bit ISA (RV64I) in src/arch/riscv for use with syscall emulation. The multiply, floating point, and atomic memory instructions will be added in additional patches, as well as support for more detailed CPU models. The loader is also modified to be able to parse RISC-V ELF files, and a "Hello world\!" example for RISC-V is added to test-progs. Patch 2 will implement the multiply extension, RV64M; patch 3 will implement the floating point (single- and double-precision) extensions, RV64FD; patch 4 will implement the atomic memory instructions, RV64A, and patch 5 will add support for timing, minor, and detailed CPU models that is missing from the first four patches (such as handling locked memory). [Removed several unused parameters and imports from RiscvInterrupts.py, RiscvISA.py, and RiscvSystem.py.] [Fixed copyright information in RISC-V files copied from elsewhere that had ARM licenses attached.] [Reorganized instruction definitions in decoder.isa so that they are sorted by opcode in preparation for the addition of ISA extensions M, A, F, D.] [Fixed formatting of several files, removed some variables and instructions that were missed when moving them to other patches, fixed RISC-V Foundation copyright attribution, and fixed history of files copied from other architectures using hg copy.] [Fixed indentation of switch cases in isa.cc.] [Reorganized syscall descriptions in linux/process.cc to remove large number of repeated unimplemented system calls and added implmementations to functions that have received them since it process.cc was first created.] [Fixed spacing for some copyright attributions.] [Replaced the rest of the file copies using hg copy.] [Fixed style check errors and corrected unaligned memory accesses.] [Fix some minor formatting mistakes.] Signed-off by: Alec Roelke Signed-off by: Jason Lowe-Power <jason@lowepower.com>
Diffstat (limited to 'src/arch/riscv/isa/main.isa')
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1 files changed, 63 insertions, 0 deletions
diff --git a/src/arch/riscv/isa/main.isa b/src/arch/riscv/isa/main.isa
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+// -*- mode:c++ -*-
+
+// Copyright (c) 2015 RISC-V Foundation
+// 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: Maxwell Walter
+// Alec Roelke
+
+////////////////////////////////////////////////////////////////////
+//
+// RISCV ISA description file.
+//
+////////////////////////////////////////////////////////////////////
+
+//Include the C++ include directives
+##include "includes.isa"
+
+////////////////////////////////////////////////////////////////////
+//
+// Namespace statement. Everything below this line will be in the
+// RiscvISAInst namespace.
+//
+
+namespace RiscvISA;
+
+//Include the bitfield definitions
+##include "bitfields.isa"
+
+//Include the operand_types and operand definitions
+##include "operands.isa"
+
+//Include the base class for riscv instructions, and some support code
+##include "base.isa"
+
+//Include the definitions for the instruction formats
+##include "formats/formats.isa"
+
+//Include the decoder definition
+##include "decoder.isa"