os/boot.s
2024-05-21 18:41:16 +03:00

36 lines
487 B
ArmAsm

.set ALIGN, 1<<0
.set MEMINFO, 1<<1
.set FLAGS, ALIGN | MEMINFO
.set MAGIC, 0x1BADB002 /* multiboot 1 */
.set CHECKSUM, -(MAGIC + FLAGS)
.section .multiboot
.align 4
.long MAGIC
.long FLAGS
.long CHECKSUM
.section .bss
.align 16
stack_bottom:
.skip 1024 * 32 # 32 KB
stack_top:
.section .text
.global _start
.type _start, @function
_start:
cli
mov $stack_top, %esp
call kernel_main
hlt
jmp 1
1:
jmp 1
.size _start, . - _start