Hello,

I'm going to commit this to allow future reuse of trap #3.
Any objections/comments?
I think this change must be done (if done) before 1.4 cutoff.

I gave up using d0, which makes it difficult to upgrade from -current,
but use a0 instead for syscall #.

The kernel code for checking the syscall # is missing for now.

Regards,
--
ITOH, Yasufumi <yasufu-i@is.aist-nara.ac.jp>, <itohy@netbsd.org>


diff -u lib/libc/arch/m68k/sys/__sigreturn14.S.orig lib/libc/arch/m68k/sys/__sigreturn14.S
--- lib/libc/arch/m68k/sys/__sigreturn14.S.orig	Wed Feb 10 02:12:33 1999
+++ lib/libc/arch/m68k/sys/__sigreturn14.S	Thu Feb 11 05:50:10 1999
@@ -59,5 +59,6 @@
 #endif /* GPROF */
 
 ENTRY(__sigreturn14)
+	lea	SYS___sigreturn14,a0
 	trap	#3		/* special sigreturn syscall entry point */
 	jra	CERROR
diff -u sys/arch/m68k/m68k/sigcode.s.orig sys/arch/m68k/m68k/sigcode.s
--- sys/arch/m68k/m68k/sigcode.s.orig	Sat Jan  9 23:24:39 1999
+++ sys/arch/m68k/m68k/sigcode.s	Thu Feb 11 06:59:52 1999
@@ -71,6 +71,7 @@
 	movl	sp@(12),a0	| signal handler addr		(4 bytes)
 	jsr	a0@		| call signal handler		(2 bytes)
 	addql	#4,sp		| pop signal number		(2 bytes)
+	lea	SYS___sigreturn14,a0 | syscall == __sigreturn14	(4 bytes)
 	trap	#3		| special sigreturn trap	(2 bytes)
 	movl	d0,sp@(4)	| save errno			(4 bytes)
 	moveq	#SYS_exit,d0	| syscall == exit		(2 bytes)