1 /* maverick.h -- Cirrus/DSP co-processor interface header 2 Copyright (C) 2003-2020 Free Software Foundation, Inc. 3 Contributed by Aldy Hernandez (aldyh@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