diff --git a/coregrind/vg_instrument.c b/coregrind/vg_instrument.c
index 80dd5f056..6bb425f92 100644
--- a/coregrind/vg_instrument.c
+++ b/coregrind/vg_instrument.c
@@ -84,6 +84,15 @@ void VG_(set_global_var)(UCodeBlock* cb, Addr globvar_ptr, UInt val)
    uInstr2(cb, STORE, 4, TempReg, t_val, TempReg, t_gv);
 }
 
+void VG_(set_global_var_tempreg)(UCodeBlock* cb, Addr globvar_ptr, UInt t_val)
+{
+   Int t_gv  = newTemp(cb);        
+
+   uInstr2(cb, MOV,   4, Literal, 0, TempReg, t_gv);
+   uLiteral(cb, globvar_ptr);
+   uInstr2(cb, STORE, 4, TempReg, t_val, TempReg, t_gv);
+}
+
 /*--------------------------------------------------------------------*/
 /*--- end                                          vg_instrument.c ---*/
 /*--------------------------------------------------------------------*/
diff --git a/include/vg_skin.h b/include/vg_skin.h
index 43702fa9b..44643941f 100644
--- a/include/vg_skin.h
+++ b/include/vg_skin.h
@@ -812,9 +812,13 @@ extern void VG_(call_helper_2_0) ( UCodeBlock* cb, Addr f, UInt arg1, UInt arg2,
                                    UInt regparms_n);
 
 /* One way around the 3-arg C function limit is to pass args via global
- * variables... ugly, but it works. */
+ * variables... ugly, but it works.  This one puts a literal in there. */
 extern void VG_(set_global_var) ( UCodeBlock* cb, Addr globvar_ptr, UInt val);
 
+/* This one puts the contents of a TempReg in the global variable. */
+extern void VG_(set_global_var_tempreg) ( UCodeBlock* cb, Addr globvar_ptr,
+                                          UInt t_val);
+
 /* ------------------------------------------------------------------ */
 /* Allocating/freeing basic blocks of UCode */
 extern UCodeBlock* VG_(setup_UCodeBlock) ( UCodeBlock* cb );