diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f9f4321b5c9..1c2dc1f69a5 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2003-10-09  Kazu Hirata  <kazu@cs.umass.edu>
+
+	* config/h8300/h8300.md (define_asm_attributes): New.
+
 2003-10-09  Roger Sayle  <roger@eyesopen.com>
 
 	* optabs.c (prepare_float_lib_cmp): Always attach a REG_EQUAL note
diff --git a/gcc/config/h8300/h8300.md b/gcc/config/h8300/h8300.md
index 095949d72fb..9c8b88fabe5 100644
--- a/gcc/config/h8300/h8300.md
+++ b/gcc/config/h8300/h8300.md
@@ -101,6 +101,12 @@
 
 (define_attr "cc" "none,none_0hit,set_znv,set_zn,compare,clobber"
   (const_string "clobber"))
+
+;; Provide the maximum length of an assembly instruction in an asm
+;; statement.  The maximum length of 14 bytes is achieved on H8SX.
+
+(define_asm_attributes
+  [(set_attr "length" "14")])
 
 ;; ----------------------------------------------------------------------
 ;; MOVE INSTRUCTIONS