[ARM, sim] Fix build error and warnings
851c0536cabb661847c45c73ebd796eb3299066b

Index: sim/arm/maverick.h
--- sim/arm/maverick.h.orig
+++ sim/arm/maverick.h
@@ -0,0 +1,46 @@
+/*  maverick.h -- Cirrus/DSP co-processor interface header
+    Copyright (C) 2003-2019 Free Software Foundation, Inc.
+    Contributed by Aldy Hernandez (aldyh@redhat.com).
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+
+/* Define Co-Processor instruction handlers here.  */
+
+/* Here's ARMulator's DSP definition.  A few things to note:
+   1) it has 16 64-bit registers and 4 72-bit accumulators
+   2) you can only access its registers with MCR and MRC.  */
+
+struct maverick_regs
+{
+  union
+  {
+    int i;
+    float f;
+  } upper;
+
+  union
+  {
+    int i;
+    float f;
+  } lower;
+};
+
+union maverick_acc_regs
+{
+  long double ld;		/* Acc registers are 72-bits.  */
+};
+
+extern struct maverick_regs DSPregs[16];
+extern union maverick_acc_regs DSPacc[4];
+extern ARMword DSPsc;