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      1 /*  maverick.h -- Cirrus/DSP co-processor interface header
      2     Copyright (C) 2003-2024 Free Software Foundation, Inc.
      3     Contributed by Aldy Hernandez (aldyh (at) redhat.com).
      4 
      5     This program is free software; you can redistribute it and/or modify
      6     it under the terms of the GNU General Public License as published by
      7     the Free Software Foundation; either version 3 of the License, or
      8     (at your option) any later version.
      9 
     10     This program is distributed in the hope that it will be useful,
     11     but WITHOUT ANY WARRANTY; without even the implied warranty of
     12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     13     GNU General Public License for more details.
     14 
     15     You should have received a copy of the GNU General Public License
     16     along with this program.  If not, see <http://www.gnu.org/licenses/>. */
     17 
     18 /* Define Co-Processor instruction handlers here.  */
     19 
     20 /* Here's ARMulator's DSP definition.  A few things to note:
     21    1) it has 16 64-bit registers and 4 72-bit accumulators
     22    2) you can only access its registers with MCR and MRC.  */
     23 
     24 struct maverick_regs
     25 {
     26   union
     27   {
     28     int i;
     29     float f;
     30   } upper;
     31 
     32   union
     33   {
     34     int i;
     35     float f;
     36   } lower;
     37 };
     38 
     39 union maverick_acc_regs
     40 {
     41   long double ld;		/* Acc registers are 72-bits.  */
     42 };
     43 
     44 extern struct maverick_regs DSPregs[16];
     45 extern union maverick_acc_regs DSPacc[4];
     46 extern ARMword DSPsc;
     47