replace ad-hoc illegal instruction with the architecturally defined one

("permanently undefined")
ok deraadt@ kettenis@

6 files changed, 12 insertions, 12 deletions

diff --git a/lib/csu/aarch64/md_init.h b/lib/csu/aarch64/md_init.h
index de8b2512c0c..c8420cabeb8 100644
--- a/lib/csu/aarch64/md_init.h
+++ b/lib/csu/aarch64/md_init.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: md_init.h,v 1.9 2020/10/15 16:30:21 deraadt Exp $ */
+/* $OpenBSD: md_init.h,v 1.10 2020/10/19 17:57:40 naddy Exp $ */
 
 /*-
  * Copyright (c) 2001 Ross Harvey
@@ -115,5 +115,5 @@
 	"	svc	#0			\n" \
 	"	dsb	nsh			\n" \
 	"	isb				\n" \
-	"	.word 0xa000f7f0 /* illegal */	\n" \
+	"	udf	#0			\n" \
 	".previous");
diff --git a/lib/csu/arm/md_init.h b/lib/csu/arm/md_init.h
index d80c0cccbb5..3a9b581b6dc 100644
--- a/lib/csu/arm/md_init.h
+++ b/lib/csu/arm/md_init.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: md_init.h,v 1.16 2020/10/15 16:30:23 deraadt Exp $ */
+/* $OpenBSD: md_init.h,v 1.17 2020/10/19 17:57:40 naddy Exp $ */
 
 /*-
  * Copyright (c) 2001 Ross Harvey
@@ -159,5 +159,5 @@
 	"	swi	#0			\n" \
 	"	dsb	nsh			\n" \
 	"	isb				\n" \
-	"	.word 0xa000f7f0 /* illegal */	\n" \
+	"	udf	#0			\n" \
 	".previous");
diff --git a/lib/libc/arch/aarch64/sys/tfork_thread.S b/lib/libc/arch/aarch64/sys/tfork_thread.S
index 18cb9fa474e..20e87b1c12a 100644
--- a/lib/libc/arch/aarch64/sys/tfork_thread.S
+++ b/lib/libc/arch/aarch64/sys/tfork_thread.S
@@ -1,4 +1,4 @@
-/* $OpenBSD: tfork_thread.S,v 1.5 2020/10/18 14:28:16 deraadt Exp $ */
+/* $OpenBSD: tfork_thread.S,v 1.6 2020/10/19 17:57:40 naddy Exp $ */
 /*
  * Copyright (c) 2005 Dale Rahn <drahn@openbsd.org>
  *
@@ -43,6 +43,6 @@ ENTRY(__tfork_thread)
 	mov	x0, x3
 	blr	x2
 	SYSTRAP(__threxit)
-	.word	0xa000f7f0	/* illegal on all cpus? */
+	udf	#0
 	.cfi_endproc
 END(__tfork_thread)
diff --git a/lib/libc/arch/arm/sys/tfork_thread.S b/lib/libc/arch/arm/sys/tfork_thread.S
index b5714d7ac53..d772458abc9 100644
--- a/lib/libc/arch/arm/sys/tfork_thread.S
+++ b/lib/libc/arch/arm/sys/tfork_thread.S
@@ -1,4 +1,4 @@
-/* $OpenBSD: tfork_thread.S,v 1.5 2020/10/18 14:28:17 deraadt Exp $ */
+/* $OpenBSD: tfork_thread.S,v 1.6 2020/10/19 17:57:40 naddy Exp $ */
 /*
  * Copyright (c) 2005 Dale Rahn <drahn@openbsd.org>
  *
@@ -37,5 +37,5 @@ ENTRY(__tfork_thread)
 	mov	pc, r2
 	nop
 	SYSTRAP(__threxit)
-	.word   0xa000f7f0	/* illegal on all cpus? */
+	udf	#0
 END(__tfork_thread)
diff --git a/sys/arch/arm/arm/sigcode.S b/sys/arch/arm/arm/sigcode.S
index 9637bbef6db..ee53fcfe09d 100644
--- a/sys/arch/arm/arm/sigcode.S
+++ b/sys/arch/arm/arm/sigcode.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigcode.S,v 1.9 2020/03/13 08:46:50 deraadt Exp $	*/
+/*	$OpenBSD: sigcode.S,v 1.10 2020/10/19 17:57:40 naddy Exp $	*/
 /*	$NetBSD: sigcode.S,v 1.6 2003/10/05 19:44:58 matt Exp $	*/
 
 /*
@@ -72,7 +72,7 @@ _C_LABEL(esigcode):
 
 	.globl	sigfill
 sigfill:
-	.word	0xa000f7f0		/* illegal on all cpus? */
+	udf	#0
 esigfill:
 
 	.data
diff --git a/sys/arch/arm64/arm64/locore.S b/sys/arch/arm64/arm64/locore.S
index 6de148c1f5e..cfd87085bf9 100644
--- a/sys/arch/arm64/arm64/locore.S
+++ b/sys/arch/arm64/arm64/locore.S
@@ -1,4 +1,4 @@
-/* $OpenBSD: locore.S,v 1.31 2020/03/13 00:14:38 kettenis Exp $ */
+/* $OpenBSD: locore.S,v 1.32 2020/10/19 17:57:40 naddy Exp $ */
 /*-
  * Copyright (c) 2012-2014 Andrew Turner
  * All rights reserved.
@@ -366,7 +366,7 @@ _C_LABEL(esigcode):
 
 	.globl	sigfill
 sigfill:
-	.word	0xa000f7f0		/* FIXME: illegal on all cpus? */
+	udf	#0
 esigfill:
 
 	.data