diff --git a/sys/arch/alpha/include/asm.h b/sys/arch/alpha/include/asm.h
index 404be719ae97..b803d7cbd1bb 100644
--- a/sys/arch/alpha/include/asm.h
+++ b/sys/arch/alpha/include/asm.h
@@ -1,4 +1,4 @@
-/* $NetBSD: asm.h,v 1.21 1998/10/13 11:39:26 kleink Exp $ */
+/* $NetBSD: asm.h,v 1.22 1998/12/02 00:58:42 thorpej Exp $ */
 
 /* 
  * Copyright (c) 1991,1990,1989,1994,1995,1996 Carnegie Mellon University
@@ -621,6 +621,20 @@ label:	ASCIZ msg;						\
 #endif
 #endif
 
+/*
+ * WARN_REFERENCES: create a warning if the specified symbol is referenced
+ * (ELF only).
+ */
+#ifdef __ELF__
+#ifdef __STDC__
+#define	WARN_REFERENCES(_sym,_msg)				\
+	.section .gnu.warning. ## _sym ; .ascii _msg ; .text
+#else
+#define	WARN_REFERENCES(_sym,_msg)				\
+	.section .gnu.warning./**/_sym ; .ascii _msg ; .text
+#endif /* __STDC__ */
+#endif /* __ELF__ */
+
 /*
  * Kernel RCS ID tag and copyright macros
  */
diff --git a/sys/arch/arm32/include/asm.h b/sys/arch/arm32/include/asm.h
index 693528413fe9..22145dfdfd6d 100644
--- a/sys/arch/arm32/include/asm.h
+++ b/sys/arch/arm32/include/asm.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: asm.h,v 1.9 1998/04/01 22:50:22 mark Exp $	*/
+/*	$NetBSD: asm.h,v 1.10 1998/12/02 00:58:42 thorpej Exp $	*/
 
 /*
  * Copyright (c) 1990 The Regents of the University of California.
@@ -84,4 +84,15 @@
 
 #define RCSID(x)	.text; .asciz x
 
+#ifdef __STDC__
+#define	WARN_REFERENCES(sym,msg)					\
+	.stabs \" ## msg ## \",30,0,0,0 ;				\
+	.stabs \"_ ## sym ## \",1,0,0,0
+#else
+#define	WARN_REFERENCES_STRING(x)	"x"
+#define	WARN_REFERENCES(sym,msg)					\
+	.stabs msg,30,0,0,0 ;						\
+	.stabs WARN_REFERENCES_STRING(_/**/sym),1,0,0,0
+#endif /* __STDC__ */
+
 #endif /* !_ARM_ASM_H_ */
diff --git a/sys/arch/i386/include/asm.h b/sys/arch/i386/include/asm.h
index 210315697d67..dce54787ed35 100644
--- a/sys/arch/i386/include/asm.h
+++ b/sys/arch/i386/include/asm.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: asm.h,v 1.10 1997/07/05 20:49:19 thorpej Exp $	*/
+/*	$NetBSD: asm.h,v 1.11 1998/12/02 00:58:43 thorpej Exp $	*/
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -93,4 +93,15 @@
 
 #define RCSID(x)	.text; .asciz x
 
+#ifdef __STDC__
+#define	WARN_REFERENCES(sym,msg)					\
+	.stabs \" ## msg ## \",30,0,0,0 ;				\
+	.stabs \"_ ## sym ## \",1,0,0,0
+#else
+#define	WARN_REFERENCES_STRING(x)	"x"
+#define	WARN_REFERENCES(sym,msg)					\
+	.stabs msg,30,0,0,0 ;						\
+	.stabs WARN_REFERENCES_STRING(_/**/sym),1,0,0,0
+#endif /* __STDC__ */
+
 #endif /* !_I386_ASM_H_ */
diff --git a/sys/arch/m68k/include/asm.h b/sys/arch/m68k/include/asm.h
index 5db3cc2f078d..236ac0de5740 100644
--- a/sys/arch/m68k/include/asm.h
+++ b/sys/arch/m68k/include/asm.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: asm.h,v 1.15 1997/10/04 17:34:08 thorpej Exp $	*/
+/*	$NetBSD: asm.h,v 1.16 1998/12/02 00:58:43 thorpej Exp $	*/
 
 /*-
  * Copyright (c) 1997 The NetBSD Foundation, Inc.
@@ -180,4 +180,15 @@
 
 #endif /* _KERNEL */
 
+#ifdef __STDC__
+#define	WARN_REFERENCES(sym,msg)					\
+	.stabs \" ## msg ## \",30,0,0,0 ;				\
+	.stabs \"_ ## sym ## \",1,0,0,0
+#else
+#define	WARN_REFERENCES_STRING(x)	"x"
+#define	WARN_REFERENCES(sym,msg)					\
+	.stabs msg,30,0,0,0 ;						\
+	.stabs WARN_REFERENCES_STRING(_/**/sym),1,0,0,0
+#endif /* __STDC__ */
+
 #endif /* _ASM_H_ */
diff --git a/sys/arch/mips/include/asm.h b/sys/arch/mips/include/asm.h
index a30446822cef..a4b4f6c7dc92 100644
--- a/sys/arch/mips/include/asm.h
+++ b/sys/arch/mips/include/asm.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: asm.h,v 1.13 1997/07/20 09:47:03 jonathan Exp $	*/
+/*	$NetBSD: asm.h,v 1.14 1998/12/02 00:58:43 thorpej Exp $	*/
 
 /*
  * Copyright (c) 1992, 1993
@@ -92,6 +92,20 @@
 # endif
 #endif
 
+/*
+ * WARN_REFERENCES: create a warning if the specified symbol is referenced
+ * (ELF only, and thus, no leading underscores).
+ */
+#ifdef __ELF__
+#ifdef __STDC__
+#define	WARN_REFERENCES(_sym,_msg)				\
+	.section .gnu.warning. ## _sym ; .ascii _msg ; .text
+#else
+#define	WARN_REFERENCES(_sym,_msg)				\
+	.section .gnu.warning./**/_sym ; .ascii _msg ; .text
+#endif /* __STDC__ */
+#endif /* __ELF__ */
+
 /*
  * LEAF(x)
  *
diff --git a/sys/arch/pc532/include/asm.h b/sys/arch/pc532/include/asm.h
index 34b1c4ec8dc0..23720abaaa72 100644
--- a/sys/arch/pc532/include/asm.h
+++ b/sys/arch/pc532/include/asm.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: asm.h,v 1.12 1998/04/03 23:01:37 matthias Exp $	*/
+/*	$NetBSD: asm.h,v 1.13 1998/12/02 00:58:43 thorpej Exp $	*/
 
 /* 
  * Mach Operating System
@@ -215,4 +215,15 @@
 
 #endif
 
+#ifdef __STDC__
+#define	WARN_REFERENCES(sym,msg)					\
+	.stabs \" ## msg ## \",30,0,0,0 ;				\
+	.stabs \"_ ## sym ## \",1,0,0,0
+#else
+#define	WARN_REFERENCES_STRING(x)	"x"
+#define	WARN_REFERENCES(sym,msg)					\
+	.stabs msg,30,0,0,0 ;						\
+	.stabs WARN_REFERENCES_STRING(_/**/sym),1,0,0,0
+#endif /* __STDC__ */
+
 #endif
diff --git a/sys/arch/powerpc/include/asm.h b/sys/arch/powerpc/include/asm.h
index 17d91e189b97..bad6d53fd81c 100644
--- a/sys/arch/powerpc/include/asm.h
+++ b/sys/arch/powerpc/include/asm.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: asm.h,v 1.4 1998/11/24 11:17:17 tsubai Exp $	*/
+/*	$NetBSD: asm.h,v 1.5 1998/12/02 00:58:43 thorpej Exp $	*/
 
 /*
  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
@@ -76,4 +76,12 @@
 
 #define RCSID(x)	.text; .asciz x
 
+#ifdef __STDC__
+#define	WARN_REFERENCES(_sym,_msg)				\
+	.section .gnu.warning. ## _sym ; .ascii _msg ; .text
+#else
+#define	WARN_REFERENCES(_sym,_msg)				\
+	.section .gnu.warning./**/_sym ; .ascii _msg ; .text
+#endif /* __STDC__ */
+
 #endif /* !_PPC_ASM_H_ */
diff --git a/sys/arch/sparc/include/asm.h b/sys/arch/sparc/include/asm.h
index ba4af3bc97cb..ccd4952c8555 100644
--- a/sys/arch/sparc/include/asm.h
+++ b/sys/arch/sparc/include/asm.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: asm.h,v 1.7 1998/07/01 21:42:51 tv Exp $ */
+/*	$NetBSD: asm.h,v 1.8 1998/12/02 00:58:43 thorpej Exp $ */
 
 /*
  * Copyright (c) 1994 Allen Briggs
@@ -105,4 +105,15 @@
 
 #define RCSID(name)		.asciz name
 
+#ifdef __STDC__
+#define	WARN_REFERENCES(sym,msg)					\
+	.stabs \" ## msg ## \",30,0,0,0 ;				\
+	.stabs \"_ ## sym ## \",1,0,0,0
+#else
+#define	WARN_REFERENCES_STRING(x)	"x"
+#define	WARN_REFERENCES(sym,msg)					\
+	.stabs msg,30,0,0,0 ;						\
+	.stabs WARN_REFERENCES_STRING(_/**/sym),1,0,0,0
+#endif /* __STDC__ */
+
 #endif /* _ASM_H_ */
diff --git a/sys/arch/sparc64/include/asm.h b/sys/arch/sparc64/include/asm.h
index d8f2033d728d..603be7331226 100644
--- a/sys/arch/sparc64/include/asm.h
+++ b/sys/arch/sparc64/include/asm.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: asm.h,v 1.5 1998/10/06 05:16:34 eeh Exp $ */
+/*	$NetBSD: asm.h,v 1.6 1998/12/02 00:58:43 thorpej Exp $ */
 
 /*
  * Copyright (c) 1994 Allen Briggs
@@ -110,4 +110,28 @@
 
 #define RCSID(name)		.asciz name
 
+/*
+ * WARN_REFERENCES: create a warning if the specified symbol is referenced.
+ */
+#ifdef __ELF__
+#ifdef __STDC__
+#define	WARN_REFERENCES(_sym,_msg)				\
+	.section .gnu.warning. ## _sym ; .ascii _msg ; .text
+#else
+#define	WARN_REFERENCES(_sym,_msg)				\
+	.section .gnu.warning./**/_sym ; .ascii _msg ; .text
+#endif /* __STDC__ */
+#else
+#ifdef __STDC__
+#define	WARN_REFERENCES(sym,msg)					\
+	.stabs \" ## msg ## \",30,0,0,0 ;				\
+	.stabs \"_ ## sym ## \",1,0,0,0
+#else
+#define	WARN_REFERENCES_STRING(x)	"x"
+#define	WARN_REFERENCES(sym,msg)					\
+	.stabs msg,30,0,0,0 ;						\
+	.stabs WARN_REFERENCES_STRING(_/**/sym),1,0,0,0
+#endif /* __STDC__ */
+#endif /* __ELF__ */
+
 #endif /* _ASM_H_ */
diff --git a/sys/arch/vax/include/asm.h b/sys/arch/vax/include/asm.h
index 9ba564a9f78f..0bd8538a9e91 100644
--- a/sys/arch/vax/include/asm.h
+++ b/sys/arch/vax/include/asm.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: asm.h,v 1.6 1998/10/15 06:01:11 matt Exp $ */
+/*	$NetBSD: asm.h,v 1.7 1998/12/02 00:58:43 thorpej Exp $ */
 /*
  * Copyright (c) 1982, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -81,4 +81,15 @@
 #endif
 #endif
 
+#ifdef __STDC__
+#define	WARN_REFERENCES(sym,msg)					\
+	.stabs \" ## msg ## \",30,0,0,0 ;				\
+	.stabs \"_ ## sym ## \",1,0,0,0
+#else
+#define	WARN_REFERENCES_STRING(x)	"x"
+#define	WARN_REFERENCES(sym,msg)					\
+	.stabs msg,30,0,0,0 ;						\
+	.stabs WARN_REFERENCES_STRING(_/**/sym),1,0,0,0
+#endif /* __STDC__ */
+
 #endif