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master
src/arch/x86/tests/comboot/version.asm
136 строк
2 KB
Michael Brown
[comboot] Support COMBOOT in 64-bit builds
15 апр 2016, 17:31
15 апр 2016, 17:31
5e5450c
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bits 16 org 100h _start: ; first check for SYSLINUX mov ah, 30h int 21h cmp eax, 59530000h jne .not_syslinux cmp ebx, 4c530000h jne .not_syslinux cmp ecx, 4e490000h jne .not_syslinux cmp edx, 58550000h jne .not_syslinux ; now get syslinux version mov ax, 0001h int 22h push cx push dx push di push si push es ; print version string mov dx, str_version mov ah, 09h int 21h pop es pop bx push es mov ax, 0002h int 22h ; print copyright string mov dx, str_copyright mov ah, 09h int 21h pop es pop bx mov ax, 0002h int 22h ; print syslinux derivative id mov dx, str_derivative mov ah, 09h int 21h pop ax call print_hex_byte ; print version number mov dx, str_version_num mov ah, 09h int 21h pop cx push cx mov ax, cx and ax, 0FFh call print_dec_word mov dl, '.' mov ah, 02h int 21h pop cx mov ax, cx shr ax, 8 call print_dec_word ret .not_syslinux: mov dx, str_not_syslinux mov ah, 09h int 21h ret ; input: al = byte to print in hex print_hex_byte: push ax shr al, 4 call print_hex_nybble pop ax call print_hex_nybble ret ; input: bottom half of al = nybble to print in hex print_hex_nybble: push ax mov bl, al and bx, 1111b mov dl, [str_hex + bx] mov ah, 02h int 21h pop ax ret str_hex: db "01234567890abcdef" ; input: ax = word to print print_dec_word: mov cx, 10 mov word [.count], 0 .loop: xor dx, dx div cx inc word [.count] push dx test ax, ax jnz .loop .print: pop dx add dx, '0' mov ah, 02h int 21h dec word [.count] jnz .print ret .count: dw 0 str_not_syslinux: db "Not SYSLINUX or derivative (running on DOS?)$" str_version: db "Version: $" str_copyright: db 10, "Copyright: $" str_derivative: db 10, "Derivative ID: 0x$" str_version_num: db 10, "Version number: $"