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git-svn-id: https://spexeah.com:8443/svn/Asuro@513 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c

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This commit is contained in:
kieron
2018-04-12 20:32:56 +00:00
parent c514e7dc83
commit aae55ef2ec
10 changed files with 15 additions and 5 deletions

19
src/stub/stub.asm

@ -29,13 +29,13 @@ MULTIBOOT_ADDRESS_FIELDS equ 1<<16
; Multiboot header defines
;
MULTIBOOT_HEADER_MAGIC equ 0x1BADB002
MULTIBOOT_HEADER_FLAGS equ MULTIBOOT_MODULE_ALIGN | MULTIBOOT_MEMORY_MAP
MULTIBOOT_HEADER_FLAGS equ MULTIBOOT_MODULE_ALIGN | MULTIBOOT_MEMORY_MAP | MULTIBOOT_GRAPHICS_FIELDS
MULTIBOOT_HEADER_CHECKSUM equ -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)
;
; Kernel stack size
;
KERNEL_STACKSIZE equ 0x4000
KERNEL_STACKSIZE equ 0x4000
KERNEL_VIRTUAL_BASE equ 0xC0000000
KERNEL_PAGE_NUMBER equ (KERNEL_VIRTUAL_BASE >> 22)
@ -57,7 +57,16 @@ align 4
dd MULTIBOOT_HEADER_MAGIC
dd MULTIBOOT_HEADER_FLAGS
dd MULTIBOOT_HEADER_CHECKSUM
dd 0
dd 0
dd 0
dd 0
dd 0
dd 0
dd 1920
dd 1600
dd 8
;
; Entrypoint
;
@ -81,8 +90,8 @@ _loader:
jmp ecx
kstart:
mov dword [BootPageDirectory], 0
invlpg [0]
mov dword [BootPageDirectory], 0
invlpg [0]
mov esp, KERNEL_STACK+KERNEL_STACKSIZE ;Create kernel stack
push eax ;Multiboot magic number
add ebx, KERNEL_VIRTUAL_BASE