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// -*- mode:c++ -*-
// Copyright (c) 2009 The University of Edinburgh
// All rights reserved.
//
// 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: Timothy M. Jones
////////////////////////////////////////////////////////////////////
//
// Bitfield definitions.
//
// The endianness is the opposite to what's used here, so things
// are reversed sometimes. Not sure of a fix to this though...
// Opcode fields
def bitfield OPCODE <31:26>;
def bitfield X_XO <10:0>;
def bitfield XO_XO <10:1>;
def bitfield A_XO <5:1>;
// Register fields
def bitfield RA <20:16>;
def bitfield RB <15:11>;
def bitfield RS <25:21>;
def bitfield RT <25:21>;
def bitfield FRA <20:16>;
def bitfield FRB <15:11>;
def bitfield FRC <10:6>;
def bitfield FRS <25:21>;
def bitfield FRT <25:21>;
// The record bit can be in two positions
// Used to enable setting of the condition register
def bitfield RC31 <0>;
def bitfield RC21 <10>;
// Used to enable setting of the overflow flags
def bitfield OE <10>;
// SPR field for mtspr instruction
def bitfield SPR <20:11>;
// FXM field for mtcrf instruction
def bitfield FXM <19:12>;
// Branch fields
def bitfield LK <0>;
def bitfield AA <1>;
// Specifies a CR or FPSCR field
def bitfield BF <25:23>;
// Fields for FPSCR manipulation instructions
def bitfield FLM <24:17>;
def bitfield L <25>;
def bitfield W <16>;
// Named so to avoid conflicts with range.hh
def bitfield U_FIELD <15:12>;
// Field for specifying a bit in CR or FPSCR
def bitfield BT <25:21>;
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