LXR qemu/target/arm/arm

   1/*
   2 * ARM load/store instructions for code (armeb-user support)
   3 *
   4 *  Copyright (c) 2012 CodeSourcery, LLC
   5 *
   6 * This library is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU Lesser General Public
   8 * License as published by the Free Software Foundation; either
   9 * version 2.1 of the License, or (at your option) any later version.
  10 *
  11 * This library is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 * Lesser General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU Lesser General Public
  17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20#ifndef ARM_LDST_H
  21#define ARM_LDST_H
  22
  23#include "exec/translator.h"
  24#include "qemu/bswap.h"
  25
  26/* Load an instruction and return it in the standard little-endian order */
  27static inline uint32_t arm_ldl_code(CPUARMState *env, DisasContextBase *s,
  28                                    target_ulong addr, bool sctlr_b)
  29{
  30    return translator_ldl_swap(env, s, addr, bswap_code(sctlr_b));
  31}
  32
  33/* Ditto, for a halfword (Thumb) instruction */
  34static inline uint16_t arm_lduw_code(CPUARMState *env, DisasContextBase* s,
  35                                     target_ulong addr, bool sctlr_b)
  36{
  37#ifndef CONFIG_USER_ONLY
  38    /* In big-endian (BE32) mode, adjacent Thumb instructions have been swapped
  39       within each word.  Undo that now.  */
  40    if (sctlr_b) {
  41        addr ^= 2;
  42    }
  43#endif
  44    return translator_lduw_swap(env, s, addr, bswap_code(sctlr_b));
  45}
  46
  47#endif
  48