Date: Mon, 12 Nov 2012 07:30:24 +0000 (UTC) From: Dimitry Andric <dim@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r242907 - stable/9/sys/boot/i386/boot2 Message-ID: <201211120730.qAC7UOH3076106@svn.freebsd.org>
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Author: dim Date: Mon Nov 12 07:30:24 2012 New Revision: 242907 URL: http://svnweb.freebsd.org/changeset/base/242907 Log: MFC r242804: 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 Modified: stable/9/sys/boot/i386/boot2/sio.S Directory Properties: stable/9/sys/ (props changed) stable/9/sys/boot/ (props changed) Modified: stable/9/sys/boot/i386/boot2/sio.S ============================================================================== --- stable/9/sys/boot/i386/boot2/sio.S Mon Nov 12 07:25:51 2012 (r242906) +++ stable/9/sys/boot/i386/boot2/sio.S Mon Nov 12 07:30:24 2012 (r242907) @@ -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
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