svn commit: r242804 - head/sys/boot/i386/boot2

[Dimitry Andric]

Author: dim
Date: Thu Nov  8 23:21:02 2012
New Revision: 242804
URL: http://svnweb.freebsd.org/changeset/base/242804

Log:
  Shrink boot2 by 8 bytes, by eliminating some unneeded instructions in
  sio.S.  This is not particularly needed for head right now, but it is
  intended to merge to stable/9, to fix boot2 build with clang there.
  
  Reviewed by:	avg
  MFC after:	3 days

Modified:
  head/sys/boot/i386/boot2/sio.S

Modified: head/sys/boot/i386/boot2/sio.S
==============================================================================
--- head/sys/boot/i386/boot2/sio.S	Thu Nov  8 23:11:59 2012	(r242803)
+++ head/sys/boot/i386/boot2/sio.S	Thu Nov  8 23:21:02 2012	(r242804)
@@ -40,13 +40,11 @@ sio_init:	pushl %eax
 		movb $0x3,%al			# Set RTS,
 		outb %al,(%dx)			#  DTR
 		incl %edx			# Line status reg
-		call sio_flush
-		ret
+		# Fallthrough
 
 /* int sio_flush(void) */
 
-sio_flush:	xorl %eax,%eax			# Return value
-		xorl %ecx,%ecx			# Timeout
+sio_flush:	xorl %ecx,%ecx			# Timeout
 		movb $0x80,%ch			#  counter
 sio_flush.1:	call sio_ischar 		# Check for character
 		jz sio_flush.2			# Till none