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| author | dim <dim@FreeBSD.org> | 2012-11-08 23:21:02 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2012-11-08 23:21:02 +0000 |
| commit | 9f61746f5a7c133c4334b42306477cf36abda421 (patch) | |
| tree | 93b5c0e3363e7333a4a3e00c54d5fe05f2cd4e76 /sys/boot/i386/boot2 | |
| parent | 41840cb53c49620ab38720341ecd2f8fc6975c98 (diff) | |
| download | FreeBSD-src-9f61746f5a7c133c4334b42306477cf36abda421.zip FreeBSD-src-9f61746f5a7c133c4334b42306477cf36abda421.tar.gz | |
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
Diffstat (limited to 'sys/boot/i386/boot2')
| -rw-r--r-- | sys/boot/i386/boot2/sio.S | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/sys/boot/i386/boot2/sio.S b/sys/boot/i386/boot2/sio.S index f2cd5c7..ca9d0a2 100644 --- a/sys/boot/i386/boot2/sio.S +++ b/sys/boot/i386/boot2/sio.S @@ -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 |
