mirror of
https://github.com/ondra-novak/gates_of_skeldal.git
synced 2025-07-05 06:00:33 -04:00
76 lines
1.4 KiB
NASM
76 lines
1.4 KiB
NASM
.model small
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.386
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_DATA segment byte public 'DATA' use32
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public _call_proc
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_call_proc dd ?
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old_stack dd ?
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old_stack_seg dw ?
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new_stack_pos dd ?
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new_stack_seg dw ?
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_DATA ends
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DGROUP group _DATA
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_TEXT segment byte public 'CODE' use32
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assume CS:_TEXT
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assume DS:DGROUP
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extern _dos_setvect_:proc
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extern __GETDS:proc
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public dos_int24_
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dos_int24_:cld
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push ds
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call __GETDS
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mov old_stack,esp
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mov old_stack_seg,ss
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lss esp,new_stack_pos
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push es
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push fs
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push gs
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push ebx
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push ecx
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push edx
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push edi
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push esi
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push ebp
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mov ax,ds
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mov es,ax
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mov fs,ax
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mov gs,ax
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mov dl,ah
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mov bl,al
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mov eax,edi
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call _call_proc
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pop ebp
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pop esi
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pop edi
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pop edx
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pop ecx
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pop ebx
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pop gs
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pop fs
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pop es
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lss esp,old_stack
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pop ds
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iretd
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public install_dos_error_
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;eax - procedura
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;edx - stack
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install_dos_error_:
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mov _call_proc,eax
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mov new_stack_pos,edx
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mov new_stack_seg,ss
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mov ebx,offset dos_int24_
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mov cx,cs
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mov eax,24h
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call _dos_setvect_
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ret
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_TEXT ends
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End
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