xref: /gem5/src/arch/arm/isa/templates/vfp.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
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Authors: Gabe Black

let {{
    vfpEnabledCheckCode = '''
        if (!vfpEnabled(Cpacr, Cpsr, Fpexc))
            return disabledFault();
    '''

    vmsrEnabledCheckCode = '''
        if (!vfpEnabled(Cpacr, Cpsr))
            if (dest != (int)MISCREG_FPEXC && dest != (int)MISCREG_FPSID)
                return disabledFault();
        if (!inPrivilegedMode(Cpsr))
            if (dest != (int)MISCREG_FPSCR)
                return disabledFault();

    '''

    vmrsEnabledCheckCode = '''
        if (!vfpEnabled(Cpacr, Cpsr))
            if (op1 != (int)MISCREG_FPEXC && op1 != (int)MISCREG_FPSID &&
                op1 != (int)MISCREG_MVFR0 && op1 != (int)MISCREG_MVFR1)
                return disabledFault();
        if (!inPrivilegedMode(Cpsr))
            if (op1 != (int)MISCREG_FPSCR)
                return disabledFault();
    '''
}};

def template FpRegRegOpDeclare {{
class %(class_name)s : public %(base_class)s
{
  public:
    // Constructor
    %(class_name)s(ExtMachInst machInst,
                   IntRegIndex _dest, IntRegIndex _op1,
                   VfpMicroMode mode = VfpNotAMicroop);
    %(BasicExecDeclare)s
};
}};

def template FpRegRegOpConstructor {{
    inline %(class_name)s::%(class_name)s(ExtMachInst machInst,
                                          IntRegIndex _dest, IntRegIndex _op1,
                                          VfpMicroMode mode)
        : %(base_class)s("%(mnemonic)s", machInst, %(op_class)s,
                _dest, _op1, mode)
    {
        %(constructor)s;
        if (!(condCode == COND_AL || condCode == COND_UC)) {
            for (int x = 0; x < _numDestRegs; x++) {
                _srcRegIdx[_numSrcRegs++] = _destRegIdx[x];
            }
        }
    }
}};

def template FpRegImmOpDeclare {{
class %(class_name)s : public %(base_class)s
{
  public:
    // Constructor
    %(class_name)s(ExtMachInst machInst, IntRegIndex _dest,
            uint64_t _imm, VfpMicroMode mode = VfpNotAMicroop);
    %(BasicExecDeclare)s
};
}};

def template FpRegImmOpConstructor {{
    inline %(class_name)s::%(class_name)s(ExtMachInst machInst,
            IntRegIndex _dest, uint64_t _imm, VfpMicroMode mode)
        : %(base_class)s("%(mnemonic)s", machInst, %(op_class)s,
                _dest, _imm, mode)
    {
        %(constructor)s;
        if (!(condCode == COND_AL || condCode == COND_UC)) {
            for (int x = 0; x < _numDestRegs; x++) {
                _srcRegIdx[_numSrcRegs++] = _destRegIdx[x];
            }
        }
    }
}};

def template FpRegRegImmOpDeclare {{
class %(class_name)s : public %(base_class)s
{
  public:
    // Constructor
    %(class_name)s(ExtMachInst machInst,
                   IntRegIndex _dest, IntRegIndex _op1,
                   uint64_t _imm, VfpMicroMode mode = VfpNotAMicroop);
    %(BasicExecDeclare)s
};
}};

def template FpRegRegImmOpConstructor {{
    inline %(class_name)s::%(class_name)s(ExtMachInst machInst,
                                          IntRegIndex _dest,
                                          IntRegIndex _op1,
                                          uint64_t _imm,
                                          VfpMicroMode mode)
        : %(base_class)s("%(mnemonic)s", machInst, %(op_class)s,
                         _dest, _op1, _imm, mode)
    {
        %(constructor)s;
        if (!(condCode == COND_AL || condCode == COND_UC)) {
            for (int x = 0; x < _numDestRegs; x++) {
                _srcRegIdx[_numSrcRegs++] = _destRegIdx[x];
            }
        }
    }
}};

def template FpRegRegRegOpDeclare {{
class %(class_name)s : public %(base_class)s
{
  public:
    // Constructor
    %(class_name)s(ExtMachInst machInst,
                   IntRegIndex _dest, IntRegIndex _op1, IntRegIndex _op2,
                   VfpMicroMode mode = VfpNotAMicroop);
    %(BasicExecDeclare)s
};
}};

def template FpRegRegRegOpConstructor {{
    inline %(class_name)s::%(class_name)s(ExtMachInst machInst,
                                          IntRegIndex _dest,
                                          IntRegIndex _op1,
                                          IntRegIndex _op2,
                                          VfpMicroMode mode)
        : %(base_class)s("%(mnemonic)s", machInst, %(op_class)s,
                         _dest, _op1, _op2, mode)
    {
        %(constructor)s;
        if (!(condCode == COND_AL || condCode == COND_UC)) {
            for (int x = 0; x < _numDestRegs; x++) {
                _srcRegIdx[_numSrcRegs++] = _destRegIdx[x];
            }
        }
    }
}};