target/microblaze: mbar: Trap sleeps from user-space
Trap mbar-sleeps from user-space.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reported-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c
index 530c15e..a96cb21 100644
--- a/target/microblaze/translate.c
+++ b/target/microblaze/translate.c
@@ -1250,6 +1250,11 @@
LOG_DIS("sleep\n");
+ if (trap_userspace(dc, true)) {
+ /* Sleep is a privileged instruction. */
+ return;
+ }
+
t_sync_flags(dc);
tcg_gen_st_i32(tmp_1, cpu_env,
-offsetof(MicroBlazeCPU, env)
