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-rw-r--r--target-i386/mpx_helper.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/target-i386/mpx_helper.c b/target-i386/mpx_helper.c
index 53d98347d9..1bf717af05 100644
--- a/target-i386/mpx_helper.c
+++ b/target-i386/mpx_helper.c
@@ -156,3 +156,11 @@ void helper_bndstx32(CPUX86State *env, target_ulong base, target_ulong ptr,
cpu_stl_data_ra(env, bte + 4, ub, ra);
cpu_stl_data_ra(env, bte + 8, ptr, ra);
}
+
+void helper_bnd_jmp(CPUX86State *env)
+{
+ if (!(env->hflags2 & HF2_MPX_PR_MASK)) {
+ memset(env->bnd_regs, 0, sizeof(env->bnd_regs));
+ env->hflags &= ~HF_MPX_IU_MASK;
+ }
+}