linux_64.asm_uefi_x86_64 746 B raw

section .data
​
align 16
linux_gdt64:
    dq 0
​
    dq 0
​
    dw 0xffff
    dw 0x0000
    db 0x00
    db 10011011b
    db 10101111b
    db 0x00
​
    dw 0xffff
    dw 0x0000
    db 0x00
    db 10010011b
    db 10001111b
    db 0x00
​
  .end:
​
align 16
linux_gdt64_ptr:
    dw (linux_gdt64.end - linux_gdt64) - 1
    dq linux_gdt64
​
section .text
​
bits 64
​
global linux_spinup64
linux_spinup64:
    cli
    cld
​
    lgdt [rel linux_gdt64_ptr]
​
    lea rbx, [rel .fj]
    push 0x10
    push rbx
    retfq
​
  .fj:
    mov eax, 0x18
    mov ds, eax
    mov es, eax
    mov fs, eax
    mov gs, eax
    mov ss, eax
​
    mov rax, rdi
​
    xor ebp, ebp
    xor edi, edi
    xor ebx, ebx
​
    jmp rax
​
section .note.GNU-stack noalloc noexec nowrite progbits

tab: 2 4 8 wrap: off on

1	section .data
2
3	align 16
4	linux_gdt64:
5	dq 0
6
7	dq 0
8
9	dw 0xffff
10	dw 0x0000
11	db 0x00
12	db 10011011b
13	db 10101111b
14	db 0x00
15
16	dw 0xffff
17	dw 0x0000
18	db 0x00
19	db 10010011b
20	db 10001111b
21	db 0x00
22
23	.end:
24
25	align 16
26	linux_gdt64_ptr:
27	dw (linux_gdt64.end - linux_gdt64) - 1
28	dq linux_gdt64
29
30	section .text
31
32	bits 64
33
34	global linux_spinup64
35	linux_spinup64:
36	cli
37	cld
38
39	lgdt [rel linux_gdt64_ptr]
40
41	lea rbx, [rel .fj]
42	push 0x10
43	push rbx
44	retfq
45
46	.fj:
47	mov eax, 0x18
48	mov ds, eax
49	mov es, eax
50	mov fs, eax
51	mov gs, eax
52	mov ss, eax
53
54	mov rax, rdi
55
56	xor ebp, ebp
57	xor edi, edi
58	xor ebx, ebx
59
60	jmp rax
61
62	section .note.GNU-stack noalloc noexec nowrite progbits