xref: /gem5/src/arch/arm/isa/bitfields.isa

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

// Copyright (c) 2007-2008 The Florida State University
// 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: Stephen Hines

////////////////////////////////////////////////////////////////////
//
// Bitfield definitions.
//

// Opcode fields
def bitfield OPCODE        opcode;
def bitfield OPCODE_27_25  opcode27_25;
def bitfield OPCODE_24_21  opcode24_21;
def bitfield OPCODE_24_23  opcode24_23;
def bitfield OPCODE_24	   opcode24;
def bitfield OPCODE_23_20  opcode23_20;
def bitfield OPCODE_23_21  opcode23_21;
def bitfield OPCODE_23     opcode23;
def bitfield OPCODE_22_8   opcode22_8;
def bitfield OPCODE_22_21  opcode22_21;
def bitfield OPCODE_22     opcode22;
def bitfield OPCODE_21_20  opcode21_20;
def bitfield OPCODE_20     opcode20;
def bitfield OPCODE_19_18  opcode19_18;
def bitfield OPCODE_19	   opcode19;
def bitfield OPCODE_15_12  opcode15_12;
def bitfield OPCODE_15	   opcode15;
def bitfield OPCODE_9      opcode9;
def bitfield OPCODE_7_4    opcode7_4;
def bitfield OPCODE_7_5	   opcode7_5;
def bitfield OPCODE_7_6    opcode7_6;
def bitfield OPCODE_7      opcode7;
def bitfield OPCODE_6_5	   opcode6_5;
def bitfield OPCODE_6	   opcode6;
def bitfield OPCODE_5	   opcode5;
def bitfield OPCODE_4      opcode4;

// Other
def bitfield COND_CODE     condCode;
def bitfield S_FIELD       sField;
def bitfield RN            rn;
def bitfield RD            rd;
def bitfield SHIFT_SIZE    shiftSize;
def bitfield SHIFT         shift;
def bitfield RM            rm;

def bitfield RS            rs;

def bitfield RDUP          rdup;
def bitfield RNDN          rddn;

def bitfield RDHI          rdhi;
def bitfield RDLO          rdlo;

def bitfield U_FIELD       uField;

def bitfield PUSWL	   puswl;
def bitfield PREPOST	   puswl.prepost;
def bitfield UP		   puswl.up;
def bitfield PSRUSER	   puswl.psruser;
def bitfield WRITEBACK	   puswl.writeback;
def bitfield LOADOP        puswl.loadOp;

def bitfield PUBWL	   pubwl;
def bitfield PUIWL	   puiwl;
def bitfield BYTEACCESS	   byteAccess;

def bitfield LUAS	   luas;

def bitfield IMM	   imm;
def bitfield IMMED_7_4     immed7_4;
def bitfield IMMED_3_0     immed3_0;

def bitfield F_MSR         msr.f;
def bitfield S_MSR         msr.s;
def bitfield X_MSR         msr.x;
def bitfield C_MSR         msr.c;

def bitfield Y_6           y;
def bitfield X_5           x;

def bitfield IMMED_15_4    immed15_4;

def bitfield W_FIELD       wField;

def bitfield ROTATE        rotate;
def bitfield IMMED_7_0     immed7_0;

def bitfield T_FIELD       tField;
def bitfield IMMED_11_0    immed11_0;

def bitfield IMMED_20_16   immed20_16;
def bitfield IMMED_19_16   immed19_16;

def bitfield IMMED_HI_11_8 immedHi11_8;
def bitfield IMMED_LO_3_0  immedLo3_0;

def bitfield ROT           rot;

def bitfield R_FIELD       rField;

def bitfield CARET         caret;
def bitfield REGLIST       regList;

def bitfield OFFSET        offset;
def bitfield COPRO         copro;
def bitfield OP1_7_4       op1_7_4;
def bitfield CM            cm;

def bitfield L_FIELD       lField;
def bitfield CD            cd;
def bitfield OPTION        option;

def bitfield OP1_23_20     op1_23_20;
def bitfield CN            cn;
def bitfield OP2_7_5       op2_7_5;

def bitfield OP1_23_21     op1_23_21;

def bitfield IMMED_23_0    immed23_0;
def bitfield M_FIELD       mField;
def bitfield A_FIELD       aField;
def bitfield I_FIELD       iField;
def bitfield F_FIELD       fField;
def bitfield MODE          mode;

def bitfield A_BLX         aBlx;

def bitfield CPNUM	   cpNum;
// Note that FP Regs are only 3 bits
def bitfield FN		   fn;
def bitfield FD		   fd;
def bitfield FPREGIMM	   fpRegImm;
// We can just use 3:0 for FM since the hard-wired FP regs are handled in
// float_regfile.hh
def bitfield FM		   fm;
def bitfield FPIMM	   fpImm;
def bitfield PUNWL	   punwl;

// M5 instructions
def bitfield M5FUNC        m5Func;