diff options
| author | natrixaeria <upezu@student.kit.edu> | 2019-11-09 04:44:04 +0100 |
|---|---|---|
| committer | natrixaeria <upezu@student.kit.edu> | 2019-11-09 04:44:04 +0100 |
| commit | b17a0a41bea7789178919f4a0999ea8519e1f897 (patch) | |
| tree | 96ef6db92da1c63e99041ef7220e58e8af577543 /kernel/src/asm/long_mode_init.asm | |
| parent | a68a9a11c91c3aca4d6f2e8a32df673ca39ec34d (diff) | |
Introduce integration test crate
Diffstat (limited to 'kernel/src/asm/long_mode_init.asm')
| -rw-r--r-- | kernel/src/asm/long_mode_init.asm | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/kernel/src/asm/long_mode_init.asm b/kernel/src/asm/long_mode_init.asm new file mode 100644 index 0000000..8c1b1e7 --- /dev/null +++ b/kernel/src/asm/long_mode_init.asm @@ -0,0 +1,19 @@ +global long_mode_start + +section .text +bits 64 +long_mode_start: + ; load 0 into all data segment registers + mov ax, 0 + mov ss, ax + mov ds, ax + mov es, ax + mov fs, ax + mov gs, ax + + ; print `Uff!` to screen + mov rax, 0x8521846683668255 + mov qword [0xb8000], rax + + extern _start + jmp _start |