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-rw-r--r--tcg/tcg-op.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c
index 0243c99094..291d50bb7d 100644
--- a/tcg/tcg-op.c
+++ b/tcg/tcg-op.c
@@ -148,6 +148,23 @@ void tcg_gen_op6(TCGContext *ctx, TCGOpcode opc, TCGArg a1, TCGArg a2,
tcg_emit_op(ctx, opc, pi);
}
+void tcg_gen_mb(TCGBar mb_type)
+{
+ bool emit_barriers = true;
+
+#ifndef CONFIG_USER_ONLY
+ /* TODO: When MTTCG is available for system mode, we will check
+ * the following condition and enable emit_barriers
+ * (qemu_tcg_mttcg_enabled() && smp_cpus > 1)
+ */
+ emit_barriers = false;
+#endif
+
+ if (emit_barriers) {
+ tcg_gen_op1(&tcg_ctx, INDEX_op_mb, mb_type);
+ }
+}
+
/* 32 bit ops */
void tcg_gen_addi_i32(TCGv_i32 ret, TCGv_i32 arg1, int32_t arg2)