gdb/arch/arm.c

   1 /* Common target dependent code for GDB on ARM systems.
   2
   3    Copyright (C) 1988-2015 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "common-defs.h"
  21 #include "arm.h"
  22
  23 /* Return the size in bytes of the complete Thumb instruction whose
  24    first halfword is INST1.  */
  25
  26 int
  27 thumb_insn_size (unsigned short inst1)
  28 {
  29   if ((inst1 & 0xe000) == 0xe000 && (inst1 & 0x1800) != 0)
  30     return 4;
  31   else
  32     return 2;
  33 }