// -*- 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
// 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

def format Svc() {{
    decode_block = "return new Svc(machInst);"
}};

def format ArmMsrMrs() {{
    decode_block = '''
    {
        const uint8_t byteMask = bits(machInst, 19, 16);
        const IntRegIndex rn = (IntRegIndex)(uint32_t)bits(machInst, 3, 0);
        const IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 15, 12);
        const uint32_t opcode = bits(machInst, 24, 21);
        const bool useImm = bits(machInst, 25);

        const uint32_t unrotated = bits(machInst, 7, 0);
        const uint32_t rotation = (bits(machInst, 11, 8) << 1);
        const uint32_t imm = rotate_imm(unrotated, rotation);

        switch (opcode) {
          case 0x8:
            return new MrsCpsr(machInst, rd);
          case 0x9:
            if (useImm) {
                return new MsrCpsrImm(machInst, imm, byteMask);
            } else {
                return new MsrCpsrReg(machInst, rn, byteMask);
            }
          case 0xa:
            return new MrsSpsr(machInst, rd);
          case 0xb:
            if (useImm) {
                return new MsrSpsrImm(machInst, imm, byteMask);
            } else {
                return new MsrSpsrReg(machInst, rn, byteMask);
            }
          default:
            return new Unknown(machInst);
        }
    }
    '''
}};