forked from KolibriOS/kolibrios64
145 lines
3.7 KiB
NASM
145 lines
3.7 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2025-2025. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License. ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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format pe64 efi
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entry main
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section '.text' code executable readable
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include '../struct.inc'
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; include '../macros.inc'
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; include '../kglobals.inc'
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fastcall fix fstcall
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include '../proc64.inc'
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include '../const.inc'
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purge DQ ; because of some struct DQ in const.inc
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include 'uefi64.inc'
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; rcx - color = fore | back
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; uses - rax, rdx ; TODO maybe just save them?? or doesnt worth ??
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efi_set_text_color:
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mov rax, [efi_table]
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mov rax, [rax+EFI_SYSTEM_TABLE.ConOut]
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mov rdx, rcx ; arg2 - color
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mov rcx, rax ; arg1 - this
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fstcall [rax+EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.SetAttribute]
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ret
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; rcx - null-terminated string
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; uses - rax, rdx
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efi_puts:
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mov rax, [efi_table]
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mov rax, [rax+EFI_SYSTEM_TABLE.ConOut]
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mov rdx, rcx ; arg2 - string
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mov rcx, rax ; arg1 - this
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fstcall [rcx+EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.OutputString]
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ret
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; rcx - char
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; uses - rax, rdx
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efi_putc:
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mov rax, [efi_table]
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mov rax, [rax+EFI_SYSTEM_TABLE.ConOut]
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push qword 0
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mov byte [rsp], cl
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mov rdx, rsp
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mov rcx, rax
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fstcall [rcx+EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.OutputString]
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add rsp, 8
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ret
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; rcx - number
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; uses - rax
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efi_print_hex:
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push rax rbx rcx rdx r8
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push qword 0
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push qword 0
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push qword 0
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push qword 0
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push qword 0
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; TODO maybe add '0x' to buffer
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mov rdx, rcx
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mov rcx, 64 ; how many nibbles in qword
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xor r8, r8
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@@:
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sub rcx, 4
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mov rbx, rdx
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shr rbx, cl
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and rbx, 0xf
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lea rax, [hex_codes + rbx]
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movzx rax, byte [rax]
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mov byte [rsp + r8*2 ], al
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mov byte [rsp + r8*2 + 1], 0 ; set high byte to 0 bc UEFI OutputString needs CHAR16
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inc r8
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test rcx, rcx
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jnz @b
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mov rcx, rsp
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call efi_puts
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pop r8 rdx rcx rbx rax
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add rsp, 8*5
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ret
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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proc main _efi_handle, _efi_table
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mov [efi_handle], rcx
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mov [efi_table], rdx
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mov rcx, [rdx+EFI_SYSTEM_TABLE.ConOut]
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fstcall [rcx+EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.Reset], rcx, 1
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test eax, eax
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jnz $ ; loop if fail to init text
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mov rcx, EFI_BLUE or EFI_BACKGROUND_CYAN
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call efi_set_text_color
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mov rcx, msg_hello_k64_loader
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call efi_puts
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mov rcx, EFI_LIGHTRED
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call efi_set_text_color
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mov rcx, msg_2
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call efi_puts
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mov rcx, EFI_CYAN
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call efi_set_text_color
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mov rcx, 'a'
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call efi_putc
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mov rcx, ' '
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call efi_putc
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mov rcx, EFI_LIGHTGREEN
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call efi_set_text_color
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mov rcx, 0xCAFEBABEFEEDCAFE
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call efi_print_hex
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jmp $
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endp
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section '.data' data readable writeable
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efi_handle dq 0
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efi_table dq 0
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hex_codes:
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db '0123456789ABCDEF', 0
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section '.rodata' data readable
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msg_hello_k64_loader du "Hello from Kolibri64 efi loader",13,10,0
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msg_2 du "Lorem ipsum ! !",13,10,0
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section '.reloc' fixups data discardable
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