diff --git a/include/ChangeLog b/include/ChangeLog
index efb0a5db84..e476eba072 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,8 @@
+Wed Jan 11 22:36:40 1995  Ken Raeburn  <raeburn@cujo.cygnus.com>
+
+	* libiberty.h (_hex_array_size, _hex_bad, _hex_value, hex_init,
+	hex_p, hex_value): New macros and declarations, for hex.c.
+
 Fri Jan  6 17:44:14 1995  Ian Lance Taylor  <ian@sanguine.cygnus.com>
 
 	* dis-asm.h: Make idempotent.
diff --git a/include/libiberty.h b/include/libiberty.h
index 32ba288094..bc2e67c59d 100644
--- a/include/libiberty.h
+++ b/include/libiberty.h
@@ -61,10 +61,12 @@ extern int strtoerrno PARAMS ((const char *));
 
 extern int signo_max PARAMS ((void));
 
-/* Return a signal message string for a signal number (e.g., strsignal
-   (SIGHUP) returns something like "Hangup").  */
+/* Return a signal message string for a signal number
+   (e.g., strsignal (SIGHUP) returns something like "Hangup").  */
+/* This is commented out as it can conflict with one in system headers.
+   We still document its existence though.  */
 
-extern const char *strsignal PARAMS ((int));
+/*extern const char *strsignal PARAMS ((int));*/
 
 /* Return the name of a signal number (e.g., strsigno (SIGHUP) returns
    "SIGHUP").  */
@@ -85,7 +87,7 @@ extern int xatexit PARAMS ((void (*fn) (void)));
 extern void xexit PARAMS ((int status));
 #else
 typedef void libiberty_voidfn PARAMS ((int status));
-volatile libiberty_voidfn xexit;
+__volatile__ libiberty_voidfn xexit;
 #endif
 
 /* Set the program name used by xmalloc.  */
@@ -109,4 +111,15 @@ extern PTR xmalloc ();
 
 extern PTR xrealloc ();
 
+/* hex character manipulation routines */
+
+#define _hex_array_size 256
+#define _hex_bad	99
+extern char _hex_value[_hex_array_size];
+extern void hex_init PARAMS ((void));
+#define hex_p(c)	(hex_value (c) == _hex_bad)
+/* If you change this, note well: Some code relies on side effects in
+   the argument being performed exactly once.  */
+#define hex_value(c)	(_hex_value[(unsigned char) (c)])
+
 #endif /* ! defined (LIBIBERTY_H) */