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[org 0x7E00]
%define PAGETABLE 0x1000
%define VESAMODES 0x500
%define MEMMAP 0x500
setup:
mov [bootinfo.ksize], edi
; print message
mov ebx, .msg
call print_str
; setup VESA
call vesa
; get extended memory map
call mmap
; build page table
call paging
; jump into long mode
jmp 0x0008:long_mode
.msg:
db 10, 13, "cuddles stage2", 10, 13, 0
bootinfo:
.ksize: dq 0
.gfx_pitch: dw 0
.gfx_width: dw 0
.gfx_height: dw 0
.gfx_framebuffer: dq 0
.mmap_len: dq 0
.mmap_ptr: dq 0
%include "stage2/vesa.asm"
%include "stage2/mmap.asm"
%include "stage2/paging.asm"
%include "stage1/print.asm"
[bits 64]
%include "stage2/elf.asm"
long_mode:
; setup segment registers
mov ax, 0x0010
mov ds, ax
mov es, ax
mov fs, ax
mov gs, ax
mov ss, ax
call load_kernel_elf ; returns entry point in rax
; more stack space
mov rsp, 0x80000
xor rbp, rbp
; pass bootinfo as arg
mov rdi, bootinfo
call rax
kernel_elf:
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