1 /* 2 * x86 memory access helpers 3 * 4 * Copyright (c) 2003 Fabrice Bellard 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 #include "qemu/osdep.h" 21 #include "cpu.h" 22 #include "exec/helper-proto.h" 23 #include "accel/tcg/cpu-ldst.h" 24 #include "qemu/int128.h" 25 #include "qemu/atomic128.h" 26 #include "tcg/tcg.h" 27 #include "helper-tcg.h" 28 29 void helper_boundw(CPUX86State *env, target_ulong a0, int v) 30 { 31 int low, high; 32 33 low = cpu_ldsw_data_ra(env, a0, GETPC()); 34 high = cpu_ldsw_data_ra(env, a0 + 2, GETPC()); 35 v = (int16_t)v; 36 if (v < low || v > high) { 37 if (env->hflags & HF_MPX_EN_MASK) { 38 env->bndcs_regs.sts = 0; 39 } 40 raise_exception_ra(env, EXCP05_BOUND, GETPC()); 41 } 42 } 43 44 void helper_boundl(CPUX86State *env, target_ulong a0, int v) 45 { 46 int low, high; 47 48 low = cpu_ldl_data_ra(env, a0, GETPC()); 49 high = cpu_ldl_data_ra(env, a0 + 4, GETPC()); 50 if (v < low || v > high) { 51 if (env->hflags & HF_MPX_EN_MASK) { 52 env->bndcs_regs.sts = 0; 53 } 54 raise_exception_ra(env, EXCP05_BOUND, GETPC()); 55 } 56 } 57