arm_ldst.h (1644B)
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 */ 27 static 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 */ 34 static 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