diff --git a/tcc.h b/tcc.h
index a53dd78..dde2832 100644
--- a/tcc.h
+++ b/tcc.h
@@ -1139,6 +1139,7 @@ ST_FUNC void vset(CType *type, int r, int v);
 ST_FUNC void vswap(void);
 ST_FUNC void vpush_global_sym(CType *type, int v);
 ST_FUNC void vrott(int n);
+ST_FUNC void vrotb(int n);
 #ifdef TCC_TARGET_ARM
 ST_FUNC int get_reg_ex(int rc, int rc2);
 ST_FUNC void lexpand_nr(void);
diff --git a/tccgen.c b/tccgen.c
index 9339b5f..5b9f50a 100644
--- a/tccgen.c
+++ b/tccgen.c
@@ -961,7 +961,7 @@ static void lbuild(int t)
 /* rotate n first stack elements to the bottom 
    I1 ... In -> I2 ... In I1 [top is right]
 */
-static void vrotb(int n)
+ST_FUNC void vrotb(int n)
 {
     int i;
     SValue tmp;