11d854765SPaolo Bonzini /* 21d854765SPaolo Bonzini * ARM load/store instructions for code (armeb-user support) 31d854765SPaolo Bonzini * 41d854765SPaolo Bonzini * Copyright (c) 2012 CodeSourcery, LLC 51d854765SPaolo Bonzini * 61d854765SPaolo Bonzini * This library is free software; you can redistribute it and/or 71d854765SPaolo Bonzini * modify it under the terms of the GNU Lesser General Public 81d854765SPaolo Bonzini * License as published by the Free Software Foundation; either 91d854765SPaolo Bonzini * version 2 of the License, or (at your option) any later version. 101d854765SPaolo Bonzini * 111d854765SPaolo Bonzini * This library is distributed in the hope that it will be useful, 121d854765SPaolo Bonzini * but WITHOUT ANY WARRANTY; without even the implied warranty of 131d854765SPaolo Bonzini * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 141d854765SPaolo Bonzini * Lesser General Public License for more details. 151d854765SPaolo Bonzini * 161d854765SPaolo Bonzini * You should have received a copy of the GNU Lesser General Public 171d854765SPaolo Bonzini * License along with this library; if not, see <http://www.gnu.org/licenses/>. 181d854765SPaolo Bonzini */ 191d854765SPaolo Bonzini 201d854765SPaolo Bonzini #ifndef ARM_LDST_H 211d854765SPaolo Bonzini #define ARM_LDST_H 221d854765SPaolo Bonzini 2363c91552SPaolo Bonzini #include "exec/exec-all.h" 24f08b6170SPaolo Bonzini #include "exec/cpu_ldst.h" 251d854765SPaolo Bonzini #include "qemu/bswap.h" 261d854765SPaolo Bonzini 271d854765SPaolo Bonzini /* Load an instruction and return it in the standard little-endian order */ 281d854765SPaolo Bonzini static inline uint32_t arm_ldl_code(CPUARMState *env, target_ulong addr, 29f9fd40ebSPaolo Bonzini bool sctlr_b) 301d854765SPaolo Bonzini { 311d854765SPaolo Bonzini uint32_t insn = cpu_ldl_code(env, addr); 32f9fd40ebSPaolo Bonzini if (bswap_code(sctlr_b)) { 331d854765SPaolo Bonzini return bswap32(insn); 341d854765SPaolo Bonzini } 351d854765SPaolo Bonzini return insn; 361d854765SPaolo Bonzini } 371d854765SPaolo Bonzini 381d854765SPaolo Bonzini /* Ditto, for a halfword (Thumb) instruction */ 391d854765SPaolo Bonzini static inline uint16_t arm_lduw_code(CPUARMState *env, target_ulong addr, 40f9fd40ebSPaolo Bonzini bool sctlr_b) 411d854765SPaolo Bonzini { 42f7478a92SJulian Brown uint16_t insn; 43f7478a92SJulian Brown #ifndef CONFIG_USER_ONLY 44f7478a92SJulian Brown /* In big-endian (BE32) mode, adjacent Thumb instructions have been swapped 45f7478a92SJulian Brown within each word. Undo that now. */ 46f7478a92SJulian Brown if (sctlr_b) { 47f7478a92SJulian Brown addr ^= 2; 48f7478a92SJulian Brown } 49f7478a92SJulian Brown #endif 50f7478a92SJulian Brown insn = cpu_lduw_code(env, addr); 51f9fd40ebSPaolo Bonzini if (bswap_code(sctlr_b)) { 521d854765SPaolo Bonzini return bswap16(insn); 531d854765SPaolo Bonzini } 541d854765SPaolo Bonzini return insn; 551d854765SPaolo Bonzini } 561d854765SPaolo Bonzini 571d854765SPaolo Bonzini #endif 58