101 lines
3.4 KiB
C++
101 lines
3.4 KiB
C++
// -*- mode:c++ -*-
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// Copyright (c) 2015 RISC-V Foundation
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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: Maxwell Walter
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// Alec Roelke
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// Declarations for execute() methods.
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def template BasicExecDeclare {{
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Fault execute(%(CPU_exec_context)s *, Trace::InstRecord *) const;
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}};
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// Basic instruction class declaration template.
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def template BasicDeclare {{
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//
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// Static instruction class for "%(mnemonic)s".
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//
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class %(class_name)s : public %(base_class)s
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{
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public:
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/// Constructor.
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%(class_name)s(MachInst machInst);
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%(BasicExecDeclare)s
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using %(base_class)s::generateDisassembly;
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};
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}};
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// Basic instruction class constructor template.
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def template BasicConstructor {{
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%(class_name)s::%(class_name)s(MachInst machInst)
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: %(base_class)s("%(mnemonic)s", machInst, %(op_class)s)
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{
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%(constructor)s;
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}
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}};
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// Basic instruction class execute method template.
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def template BasicExecute {{
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Fault
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%(class_name)s::execute(CPU_EXEC_CONTEXT *xc,
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Trace::InstRecord *traceData) const
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{
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Fault fault = NoFault;
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%(op_decl)s;
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%(op_rd)s;
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if (fault == NoFault) {
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%(code)s;
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if (fault == NoFault) {
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%(op_wb)s;
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}
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}
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return fault;
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}
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}};
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// Basic decode template.
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def template BasicDecode {{
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return new %(class_name)s(machInst);
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}};
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// Basic decode template, passing mnemonic in as string arg to constructor.
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def template BasicDecodeWithMnemonic {{
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return new %(class_name)s("%(mnemonic)s", machInst);
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}};
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// The most basic instruction format...
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def format BasicOp(code, *flags) {{
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iop = InstObjParams(name, Name, 'RiscvStaticInst', code, flags)
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header_output = BasicDeclare.subst(iop)
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decoder_output = BasicConstructor.subst(iop)
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decode_block = BasicDecode.subst(iop)
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exec_output = BasicExecute.subst(iop)
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}};
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