gem5/src/arch/arm/isa/insts/misc.isa

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

// Copyright (c) 2010 ARM Limited
// All rights reserved
//
// The license below extends only to copyright in the software and shall
// not be construed as granting a license to any other intellectual
// property including but not limited to intellectual property relating
// to a hardware implementation of the functionality of the software
// licensed hereunder.  You may use the software subject to the license
// terms below provided that you ensure that this notice is replicated
// unmodified and in its entirety in all distributions of the software,
// modified or unmodified, in source code or in binary form.
//
// 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
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// Authors: Gabe Black

let {{

    svcCode = '''
#if FULL_SYSTEM
    fault = new SupervisorCall;
#else
    fault = new SupervisorCall(machInst);
#endif
    '''

    svcIop = InstObjParams("svc", "Svc", "PredOp",
                           { "code": svcCode,
                             "predicate_test": predicateTest }, ["IsSyscall"])
    header_output = BasicDeclare.subst(svcIop)
    decoder_output = BasicConstructor.subst(svcIop)
    exec_output = PredOpExecute.subst(svcIop)

}};

let {{

    header_output = decoder_output = exec_output = ""

    mrsCpsrCode = "Dest = (Cpsr | CondCodes) & 0xF8FF03DF"
    mrsCpsrIop = InstObjParams("mrs", "MrsCpsr", "MrsOp",
                               { "code": mrsCpsrCode,
                                 "predicate_test": predicateTest }, [])
    header_output += MrsDeclare.subst(mrsCpsrIop)
    decoder_output += MrsConstructor.subst(mrsCpsrIop)
    exec_output += PredOpExecute.subst(mrsCpsrIop)

    mrsSpsrCode = "Dest = Spsr"
    mrsSpsrIop = InstObjParams("mrs", "MrsSpsr", "MrsOp",
                               { "code": mrsSpsrCode,
                                 "predicate_test": predicateTest }, [])
    header_output += MrsDeclare.subst(mrsSpsrIop)
    decoder_output += MrsConstructor.subst(mrsSpsrIop)
    exec_output += PredOpExecute.subst(mrsSpsrIop)

    msrCpsrRegCode = '''
        uint32_t newCpsr =
            cpsrWriteByInstr(Cpsr | CondCodes, Op1, byteMask, false);
        Cpsr = ~CondCodesMask & newCpsr;
        CondCodes = CondCodesMask & newCpsr;
    '''
    msrCpsrRegIop = InstObjParams("msr", "MsrCpsrReg", "MsrRegOp",
                                  { "code": msrCpsrRegCode,
                                    "predicate_test": predicateTest }, [])
    header_output += MsrRegDeclare.subst(msrCpsrRegIop)
    decoder_output += MsrRegConstructor.subst(msrCpsrRegIop)
    exec_output += PredOpExecute.subst(msrCpsrRegIop)

    msrSpsrRegCode = "Spsr = spsrWriteByInstr(Spsr, Op1, byteMask, false);"
    msrSpsrRegIop = InstObjParams("msr", "MsrSpsrReg", "MsrRegOp",
                                  { "code": msrSpsrRegCode,
                                    "predicate_test": predicateTest }, [])
    header_output += MsrRegDeclare.subst(msrSpsrRegIop)
    decoder_output += MsrRegConstructor.subst(msrSpsrRegIop)
    exec_output += PredOpExecute.subst(msrSpsrRegIop)

    msrCpsrImmCode = '''
        uint32_t newCpsr =
            cpsrWriteByInstr(Cpsr | CondCodes, imm, byteMask, false);
        Cpsr = ~CondCodesMask & newCpsr;
        CondCodes = CondCodesMask & newCpsr;
    '''
    msrCpsrImmIop = InstObjParams("msr", "MsrCpsrImm", "MsrImmOp",
                                  { "code": msrCpsrImmCode,
                                    "predicate_test": predicateTest }, [])
    header_output += MsrImmDeclare.subst(msrCpsrImmIop)
    decoder_output += MsrImmConstructor.subst(msrCpsrImmIop)
    exec_output += PredOpExecute.subst(msrCpsrImmIop)

    msrSpsrImmCode = "Spsr = spsrWriteByInstr(Spsr, imm, byteMask, false);"
    msrSpsrImmIop = InstObjParams("msr", "MsrSpsrImm", "MsrImmOp",
                                  { "code": msrSpsrImmCode,
                                    "predicate_test": predicateTest }, [])
    header_output += MsrImmDeclare.subst(msrSpsrImmIop)
    decoder_output += MsrImmConstructor.subst(msrSpsrImmIop)
    exec_output += PredOpExecute.subst(msrSpsrImmIop)
}};