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.set ALIGN, 1<<0
.set MEMINFO, 1<<1
.set GFXMODE, 1<<2 # this flag enables the graphics fields
.set FLAGS, ALIGN | MEMINFO | GFXMODE
.set MAGIC, 0x1BADB002 # multiboot magic
.set CHECKSUM, -(MAGIC + FLAGS)
.section .multiboot
.align 4
multiboot_header:
.long MAGIC
.long FLAGS
.long CHECKSUM
.long 0
.long 0
.long 0
.long 0
.long 0
.long 0
.long 0 # screen height (don't care)
.long 0 # screen width (don't care)
.long 32 # screen BPP: MUST be 32
.section .stack
stack_bottom: # Stack grows up in addresses, so bottom is
# lower in memory than the top
.skip 16384 # 16KB stack
stack_top:
.section .text
.global _start
.type _start, @function
_start:
cli
movl $stack_top, %esp
push %eax # multiboot magic
push %ebx # multiboot header
call main
cli
hlt
.Lhang: # Idle
jmp .Lhang
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