freebsd-nq/sys/pc98/boot/kzipboot/tail.S

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/*
* Boot unpacker startup routine.
* Copyright (C) Serge Vakulenko
*/
.text
.globl tail
tail:
cli # disable interrupts
pushl 4(%esp) # pass howto arg
call _boot # unpack the kernel image
popl %eax # discard howto arg
ljmp $CSEG, $KADDR # jump to unpacked kernel