File size: 861 Bytes
8ad4ba9 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | /* NATKERNEL Boot — Multiboot header */
.set MAGIC, 0x1BADB002
.set FLAGS, 0x00000007 /* align + mmap + aout */
.set CHECKSUM, -(MAGIC + FLAGS)
.section .multiboot, "a"
.align 8
.long MAGIC
.long FLAGS
.long CHECKSUM
/* AOUT kludge */
.long 0 /* header_addr */
.long 0 /* load_addr */
.long 0 /* load_end_addr */
.long 0 /* bss_end_addr */
.long 0 /* entry_addr */
/* Graphics mode */
.long 0 /* mode_type */
.long 1024 /* width */
.long 768 /* height */
.long 32 /* depth */
.section .text
.global _start
_start:
/* Stack setup */
movl $stack_top, %esp
movl %esp, %ebp
/* Clear direction flag */
cld
/* Call kernel */
call kernel_main
/* Halt if kernel returns */
cli
hlt
1: jmp 1b
/* 16KB stack */
.section .bss, "aw", @nobits
.align 16
stack_bottom:
.skip 16384
stack_top:
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