5f0dd8cd33
Use tcg_gen_atomic_cmpxchg_i128 for the atomic case, and tcg_gen_qemu_ld/st_i128 otherwise. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/*
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* x86 memory access helpers
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "cpu.h"
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#include "exec/helper-proto.h"
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#include "exec/exec-all.h"
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#include "exec/cpu_ldst.h"
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#include "qemu/int128.h"
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#include "qemu/atomic128.h"
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#include "tcg/tcg.h"
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#include "helper-tcg.h"
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void helper_boundw(CPUX86State *env, target_ulong a0, int v)
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{
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int low, high;
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low = cpu_ldsw_data_ra(env, a0, GETPC());
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high = cpu_ldsw_data_ra(env, a0 + 2, GETPC());
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v = (int16_t)v;
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if (v < low || v > high) {
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if (env->hflags & HF_MPX_EN_MASK) {
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env->bndcs_regs.sts = 0;
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}
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raise_exception_ra(env, EXCP05_BOUND, GETPC());
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}
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}
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void helper_boundl(CPUX86State *env, target_ulong a0, int v)
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{
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int low, high;
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low = cpu_ldl_data_ra(env, a0, GETPC());
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high = cpu_ldl_data_ra(env, a0 + 4, GETPC());
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if (v < low || v > high) {
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if (env->hflags & HF_MPX_EN_MASK) {
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env->bndcs_regs.sts = 0;
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}
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raise_exception_ra(env, EXCP05_BOUND, GETPC());
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}
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}
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