kolibrios/programs/develop/libraries/console/examples/test_getch.asm

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include 'proc32.inc'
DLL_ENTRY equ 1
DLL_EXIT equ -1
REQ_DLL_VER equ 3
use32
db 'MENUET01'
dd 1
dd start
dd i_end
dd mem
dd mem
dd 0
dd 0
start:
stdcall load_dll_and_import, dllname, imports
test eax, eax
jz exit
; check version
cmp word [dll_ver], REQ_DLL_VER
jb exit
cmp word [dll_ver+2], REQ_DLL_VER
ja exit
push DLL_ENTRY
call [dll_start]
; yes! Now do some work (getch() demo in this case).
push caption
push -1
push -1
push -1
push -1
call [con_init]
; C-equivalent of the following code:
; con_printf(start_string);
; int c;
; while ((c=con_getch())!=27) // Esc=exit
; {
; if (c)
; con_printf("normal character with code %d=0x%02X\n",c,c);
; else
; {
; c=con_getch();
; con_printf("extended character with code %d=0x%02X\n",c,c);
; }
; }
push start_string
call [con_printf]
pop ecx
mainloop:
call [con_getch]
cmp al, 27
jz done
test eax, eax
jz extended
push eax
push eax
push string_normal
@@:
call [con_printf]
add esp, 12
jmp mainloop
extended:
call [con_getch]
test eax, eax
jz done
push eax
push eax
push string_extended
jmp @b
done:
push 1
call [con_exit]
exit:
or eax, -1
int 0x40
proc load_dll_and_import stdcall, _dllname:dword, _imports:dword
pushad
; load DLL
push 68
pop eax
push 19
pop ebx
mov ecx, [_dllname]
int 0x40
test eax, eax
jz import_fail
; initialize import
mov edi, eax
mov esi, [_imports]
import_loop:
lodsd
test eax, eax
jz import_done
mov edx, edi
import_find:
mov ebx, [edx]
test ebx, ebx
jz import_not_found
push eax
@@:
mov cl, [eax]
cmp cl, [ebx]
jnz import_find_next
test cl, cl
jz import_found
inc eax
inc ebx
jmp @b
import_find_next:
pop eax
add edx, 8
jmp import_find
import_found:
pop eax
mov eax, [edx+4]
mov [esi-4], eax
jmp import_loop
import_not_found:
import_fail:
popad
xor eax, eax
ret
import_done:
popad
xor eax, eax
inc eax
ret
endp
align 4
imports:
dll_start dd szStart
dll_ver dd szVersion
con_init dd szcon_init
con_printf dd szcon_printf
con_exit dd szcon_exit
con_getch dd szcon_getch
dd 0
szStart db 'START',0
szVersion db 'version',0
szcon_init db 'con_init',0
szcon_printf db 'con_printf',0
szcon_exit db 'con_exit',0
szcon_getch db 'con_getch',0
dllname db '/sys/lib/console.obj',0
caption db 'Console test - getch()',0
start_string db 'Press any key to see its code, or Esc to exit',10,0
string_normal db 'normal character with code %d=0x%02X',10,0
string_extended db 'extended character with code %d=0x%02X',10,0
i_end:
align 4
rb 2048 ; stack
mem: