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.set ALIGN, 1<<0
.set MEMINFO, 1<<1
.set FLAGS, ALIGN | MEMINFO
.set MAGIC, 0x1BADB002 # "1 Bad Boot"
.set CHECKSUM, -(MAGIC + FLAGS)
.section .multiboot
.align 4
multiboot_header:
.long MAGIC
.long FLAGS
.long CHECKSUM
.section .stack
stack_bottom: # Stack grows up in addresses, so bottom is
# lower than the top
.skip 32768 # 32KB stack
stack_top:
.section .text
.global _start
.type _start, @function
_start: # This is where execution begins
movl $stack_bottom, %esp # Initialize the stack
push %ebp # Add register ebp to the arguments of kernel_main
call kernel_main # Start the kernel, shouldn't return
cli
hlt
.kernel_hang: # Idle
jmp .kernel_hang
.size _start, . - _start
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