// -*- mode:c++ -*-

// Copyright (c) 2007 The Hewlett-Packard Development Company
// All rights reserved.
//
// Redistribution and use of this software in source and binary forms,
// with or without modification, are permitted provided that the
// following conditions are met:
//
// The software must be used only for Non-Commercial Use which means any
// use which is NOT directed to receiving any direct monetary
// compensation for, or commercial advantage from such use.  Illustrative
// examples of non-commercial use are academic research, personal study,
// teaching, education and corporate research & development.
// Illustrative examples of commercial use are distributing products for
// commercial advantage and providing services using the software for
// commercial advantage.
//
// If you wish to use this software or functionality therein that may be
// covered by patents for commercial use, please contact:
//     Director of Intellectual Property Licensing
//     Office of Strategy and Technology
//     Hewlett-Packard Company
//     1501 Page Mill Road
//     Palo Alto, California  94304
//
// 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 HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.  No right of
// sublicense is granted herewith.  Derivatives of the software and
// output created using the software may be prepared, but only for
// Non-Commercial Uses.  Derivatives of the software may be shared with
// others provided: (i) the others agree to abide by the list of
// conditions herein which includes the Non-Commercial Use restrictions;
// and (ii) such Derivatives of the software include the above copyright
// notice to acknowledge the contribution from this software where
// applicable, this list of conditions and the disclaimer below.
//
// 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: Gabe Black

//////////////////////////////////////////////////////////////////////////////
//
//  Architecture independent
//

// Execute method for macroops.
def template MacroExecPanic {{
        Fault execute(%(CPU_exec_context)s *, Trace::InstRecord *) const
        {
            panic("Tried to execute macroop directly!");
            return NoFault;
        }
}};

output header {{

        // Base class for macroops
        class MacroOp : public StaticInst
        {
          protected:
            const uint32_t numMicroOps;

            //Constructor.
            MacroOp(const char *mnem, ExtMachInst _machInst,
                    uint32_t _numMicroOps)
                        : StaticInst(mnem, _machInst, No_OpClass),
                        numMicroOps(_numMicroOps)
            {
                assert(numMicroOps);
                microOps = new StaticInstPtr[numMicroOps];
                flags[IsMacroOp] = true;
            }

            ~MacroOp()
            {
                delete [] microOps;
            }

            StaticInstPtr * microOps;

            StaticInstPtr fetchMicroOp(MicroPC microPC)
            {
                assert(microPC < numMicroOps);
                return microOps[microPC];
            }

            std::string generateDisassembly(Addr pc,
                    const SymbolTable *symtab) const
            {
                return mnemonic;
            }

            %(MacroExecPanic)s
        };
}};

// Basic instruction class declaration template.
def template MacroDeclare {{
        /**
         * Static instruction class for "%(mnemonic)s".
         */
        class %(class_name)s : public %(base_class)s
        {
          public:
            // Constructor.
            %(class_name)s(ExtMachInst machInst);
        };
}};

// Basic instruction class constructor template.
def template MacroConstructor {{
        inline %(class_name)s::%(class_name)s(ExtMachInst machInst)
            : %(base_class)s("%(mnemonic)s", machInst, %(num_micro_ops)s)
        {
                %(constructor)s;
                //alloc_micro_ops is the code that sets up the microOps
                //array in the parent class.
                %(alloc_micro_ops)s;
        }
}};

//////////////////////////////////////////////////////////////////////////////
//
//  X86 specific
//

let {{
    def genMacroOp(name, Name, opSeq):
        numMicroOps = len(opSeq)
        allocMicroOps = ''
        micropc = 0
        for op in opSeq:
            allocMicroOps += \
                "microOps[%d] = %s;\n" % \
                (micropc, op.getAllocator('"' + name + '"', True, False,
                                          #op.delayed,
                                          micropc == 0,
                                          micropc == numMicroOps - 1))
            micropc += 1
        iop = InstObjParams(name, Name, 'MacroOp',
                {'code' : '', 'num_micro_ops' : numMicroOps,
                'alloc_micro_ops' : allocMicroOps})
        header_output = MacroDeclare.subst(iop)
        decoder_output = MacroConstructor.subst(iop)
        decode_block = BasicDecode.subst(iop)
        exec_output = ''
        return (header_output, decoder_output, decode_block, exec_output)
}};