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/* $OpenBSD: startprog.S,v 1.2 1997/03/31 05:52:25 weingart Exp $ */
#include <machine/asm.h>
/*
* startprog(phyaddr, argv)
* start the program on protected mode where phyaddr is the entry point
*/
ENTRY(startprog)
pushl %ebp
movl %esp, %ebp
# get things we need into registers
movl 8(%ebp), %ecx # entry offset
movl 12(%ebp), %eax # &argv
# make a new stack at 0:0x90000 (big segs)
movl $0x10, %ebx
movw %bx, %ss
movl $0x90000, %ebx
movl %ebx, %esp
# push some number of args onto the stack
pushl 28(%eax) # argv[7] = cnvmem
pushl 32(%eax) # argv[8] = extmem
pushl 16(%eax) # argv[4] = esym
pushl 12(%eax) # argv[3] = cyl offset
pushl 8(%eax) # argv[2] = bootdev
pushl 4(%eax) # argv[1] = howto
pushl $0 # dummy 'return' address
# push on our entry address
movl $0x8, %ebx # segment
pushl %bx
pushl %ecx
# convert over the other data segs
movl $0x10, %ebx
movl %bx, %ds
movl %bx, %es
# convert the PC (and code seg)
lret
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