88 lines
1.2 KiB
NASM
88 lines
1.2 KiB
NASM
bits 64
|
|
|
|
section .text
|
|
|
|
global _syscall_encode_color
|
|
_syscall_encode_color:
|
|
xor rax, rax
|
|
and edi, 0xff
|
|
and dx, 0xff
|
|
shl si, 8
|
|
shl edx, 16
|
|
or di, si
|
|
or edi, edx
|
|
syscall
|
|
ret
|
|
|
|
global _syscall_get_framebuffer
|
|
_syscall_get_framebuffer:
|
|
push rcx
|
|
push rdx
|
|
push rsi
|
|
push rdi
|
|
mov rax, 1
|
|
syscall
|
|
pop rcx
|
|
mov qword [rcx], rax
|
|
pop rcx
|
|
mov dword [rcx], edi
|
|
pop rcx
|
|
shr rdi, 32
|
|
mov dword [rcx], edi
|
|
pop rcx
|
|
mov dword [rcx], esi
|
|
ret
|
|
|
|
global _syscall_open_file
|
|
_syscall_open_file:
|
|
mov rax, 2
|
|
push rdx
|
|
syscall
|
|
pop rdx
|
|
mov qword [rdx], rdi
|
|
ret
|
|
|
|
global _syscall_get_file_length
|
|
_syscall_get_file_length:
|
|
mov rax, 3
|
|
push rsi
|
|
syscall
|
|
pop rsi
|
|
mov qword [rsi], rdi
|
|
ret
|
|
|
|
global _syscall_read_from_file
|
|
_syscall_read_from_file:
|
|
mov rax, 4
|
|
push rcx
|
|
push rdx
|
|
push rsi
|
|
push rdi
|
|
mov rdi, rsp
|
|
syscall
|
|
add rsp, 32
|
|
ret
|
|
|
|
global _syscall_end_this_process
|
|
_syscall_end_this_process:
|
|
mov rax, 5
|
|
syscall
|
|
;does not return
|
|
|
|
global _syscall_get_new_pages
|
|
_syscall_get_new_pages:
|
|
mov rax, 6
|
|
syscall
|
|
ret
|
|
|
|
global _syscall_close_file
|
|
_syscall_close_file:
|
|
mov rax, 7
|
|
syscall
|
|
ret
|
|
|
|
global _syscall_read_key_packet
|
|
_syscall_read_key_packet:
|
|
mov rax, 8
|
|
syscall
|
|
ret
|