184 lines
2.6 KiB
NASM
184 lines
2.6 KiB
NASM
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.LALL
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TITLE $EXVECTOR
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.386P
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INCLUDE VMM.INC
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INCLUDE EXVECTOR.INC
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; the following equate makes the VXD dynamically loadable.
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%DEVICE_DYNAMIC EQU 1
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DECLARE_VIRTUAL_DEVICE %DEVICE, 1, 0, <%DEVICE>_Control, Undefined_Device_Id, Vmm_init_order
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;
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; LData
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;
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VxD_LOCKED_DATA_SEG
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Public bInitAlready
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bInitAlready DB 0
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Public _pPrevHook1
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_pPrevHook1 DD 0
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Public _pPrevHook3
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_pPrevHook3 DD 0
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Public _pfnHandler
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_pfnHandler DD 0
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Public _pProcessHandle
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_pProcessHandle DD 0
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VxD_LOCKED_DATA_ENDS
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;
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; LCode
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;
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VxD_LOCKED_CODE_SEG
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Begin_Control_Dispatch %DEVICE
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Control_Dispatch Sys_Dynamic_Device_Init, _C_Device_Init
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Control_Dispatch Sys_Dynamic_Device_Exit, _C_Device_Exit
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Control_Dispatch W32_DEVICEIOCONTROL, DriverIOControl, sCall, <ecx, ebx, edx, esi>
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End_Control_Dispatch %DEVICE
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BeginProc _C_Device_Init
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IFDEF _STDCALL
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extern _DriverControl@4:NEAR
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ELSE
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extern _DriverControl:NEAR
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ENDIF
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mov al, bInitAlready
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cmp al, 0 ; Make sure we' haven't been called already.
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jnz Succeed_Init_Phase
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inc bInitAlready ; Set the "Called Already" Flag
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push 0
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IFDEF _STDCALL
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call _DriverControl@4
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ELSE
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call _DriverControl
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add esp,4
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ENDIF
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cmp eax, 1
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jz Fail_Init_Phase
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Succeed_Init_Phase:
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clc
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ret
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Fail_Init_Phase:
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stc
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ret
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EndProc _C_Device_Init
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BeginProc _C_Device_Exit
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IFDEF _STDCALL
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extern _DriverControl@4:NEAR
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ELSE
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extern _DriverControl:NEAR
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ENDIF
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push 1
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IFDEF _STDCALL
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call _DriverControl@4
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ELSE
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call _DriverControl
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add esp,4
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ENDIF
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cmp eax, 1
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jz Fail_Exit_Phase
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Succeed_Exit_Phase:
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clc
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ret
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Fail_Exit_Phase:
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stc
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ret
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EndProc _C_Device_Exit
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BeginProc _C_Handle_Trap_1, HOOK_PROC, _pPrevHook1, LOCKED
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extern _C_Trap_Exception_Handler:NEAR
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pushfd
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pushad
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cli
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cCall _C_Trap_Exception_Handler, <esi, ebp>
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sti
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cmp eax, 0
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jnz Trap1_Handled
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;Try the next handler
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cmp [_pPrevHook1], 0
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jz Trap1_Handled
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;Here we go
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popad
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popfd
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jmp [_pPrevHook1]
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Trap1_Handled:
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popad
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popfd
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ret
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EndProc _C_Handle_Trap_1
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BeginProc _C_Handle_Trap_3, HOOK_PROC, _pPrevHook3, LOCKED
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extern _C_Trap_Exception_Handler:NEAR
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pushfd
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pushad
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cli
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cCall _C_Trap_Exception_Handler, <esi, ebp>
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sti
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cmp eax, 0
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jnz Trap3_Handled
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;Try the next handler
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cmp [_pPrevHook3], 0
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jz Trap3_Handled
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;Here we go
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popad
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popfd
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jmp [_pPrevHook3]
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Trap3_Handled:
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popad
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popfd
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ret
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EndProc _C_Handle_Trap_3
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VxD_LOCKED_CODE_ENDS
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;
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; Not using IData or ICode
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;
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;
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; Or RCode
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;
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END
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