use __syscall_error trick

libc/sysdeps/linux/m68k/Makefile.arch

@@ -5,7 +5,7 @@
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 #
 
-CSRC := ptrace.c brk.c
+CSRC := ptrace.c brk.c __syscall_error.c
 
 SSRC := __longjmp.S bsd-_setjmp.S bsd-setjmp.S clone.S setjmp.S vfork.S
 

libc/sysdeps/linux/m68k/__syscall_error.c

@@ -0,0 +1,29 @@
+/* Wrapper for setting errno.
+   Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <features.h>
+
+/* This routine is jumped to by all the syscall handlers, to stash
+ * an error number into errno.  */
+int attribute_hidden __syscall_error(int err_no)
+{
+	__set_errno(err_no);
+	return -1;
+}

libc/sysdeps/linux/m68k/clone.S

@@ -55,17 +55,6 @@ clone:
 
 	rts
 
-__syscall_error:
-	negl	%d0
-	movel	%d0, %sp@-
-	lea		__errno_location-.-8, %a0
-	jsr		%pc@(%a0)
-	movel	%d0, %a0
-	movel	%sp@+, %a0@
-	moveq	#-1, %d0
-
-	rts
-
 thread_start:
 	/*subl    %fp, %fp*/        /* terminate the stack frame */
 	jsr     (%a0)