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/*
* ARM load/store instructions for code (armeb-user support)
*
* Copyright (c) 2012 CodeSourcery, LLC
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef ARM_LDST_H
#define ARM_LDST_H
#include "exec/exec-all.h"
#include "exec/cpu_ldst.h"
#include "qemu/bswap.h"
/* Load an instruction and return it in the standard little-endian order */
static inline uint32_t arm_ldl_code(CPUARMState *env, target_ulong addr,
bool sctlr_b)
{
uint32_t insn = cpu_ldl_code(env, addr);
if (bswap_code(sctlr_b)) {
return bswap32(insn);
}
return insn;
}
/* Ditto, for a halfword (Thumb) instruction */
static inline uint16_t arm_lduw_code(CPUARMState *env, target_ulong addr,
bool sctlr_b)
{
uint16_t insn;
#ifndef CONFIG_USER_ONLY
/* In big-endian (BE32) mode, adjacent Thumb instructions have been swapped
within each word. Undo that now. */
if (sctlr_b) {
addr ^= 2;
}
#endif
insn = cpu_lduw_code(env, addr);
if (bswap_code(sctlr_b)) {
return bswap16(insn);
}
return insn;
}
#endif
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