Sync/arch/i386/boot.s

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ArmAsm
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.set ALIGN, 1<<0
.set MEMINFO, 1<<1
.set FLAGS, ALIGN | MEMINFO
.set MAGIC, 0x1BADB002
.set CHECKSUM, -(MAGIC + FLAGS)
.section .multiboot
.align 4
.long MAGIC
.long FLAGS
.long CHECKSUM
# C stack startup
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.section .bss
.align 16
stack_bottom:
.skip 16384
stack_top:
# start function - calls kernel_main
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.section .text
.global _start
.type _start, @function
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_start:
movl $stack_top, %esp
call _init
call kernel_main
cli
1: hlt
jmp 1b
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.size _start, . - _start
# GDT segment register setup
.global gdt_flush
.extern gp
gdt_flush:
lgdt (gp) #load the GDT with the special pointer
mov %eax,0x10 #offset from GDT to data segment
mov %eax, %ds
mov %eax, %es
mov %eax, %fs
mov %eax, %gs
mov %eax, %ss
pushl 12(%esp)
push $flush2
ljmp *(%esp) #long jump
flush2:
ret #return to c code
.global idt_load
.extern idtp
idt_load:
lidt (idtp)
ret