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Use correct pointer when accessing real mode interrupt vectors under 

Win16.
This commit is contained in:
Jukka Heinonen 2003-10-07 03:32:03 +00:00 committed by Alexandre Julliard
parent e0faa866e0
commit ca2902f3d1
1 changed files with 23 additions and 2 deletions
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25
dlls/winedos/interrupts.c
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@ -71,6 +71,27 @@ static const INTPROC DOSVM_VectorsBuiltin[] =
#define DOSVM_STUB_PM48 6 #define DOSVM_STUB_PM48 6
/**********************************************************************
* DOSVM_GetRMVector
*
* Return pointer to real mode interrupt vector. These are not at fixed
* location because those Win16 programs that do not use any real mode
* code have protected NULL pointer catching block at low linear memory
* and interrupt vectors have been moved to another location.
*/
static FARPROC16* DOSVM_GetRMVector( BYTE intnum )
{
LDT_ENTRY entry;
FARPROC16 proc;
proc = GetProcAddress16( GetModuleHandle16( "KERNEL" ),
(LPCSTR)(ULONG_PTR)183 );
wine_ldt_get_entry( LOWORD(proc), &entry );
return (FARPROC16*)wine_ldt_get_base( &entry ) + intnum;
}
/********************************************************************** /**********************************************************************
* DOSVM_IsIRQ * DOSVM_IsIRQ
* *
@ -517,7 +538,7 @@ void DOSVM_HardwareInterruptRM( CONTEXT86 *context, BYTE intnum )
*/ */
FARPROC16 DOSVM_GetRMHandler( BYTE intnum ) FARPROC16 DOSVM_GetRMHandler( BYTE intnum )
{ {
return ((FARPROC16*)0)[intnum]; return *DOSVM_GetRMVector( intnum );
} }
@ -530,7 +551,7 @@ void DOSVM_SetRMHandler( BYTE intnum, FARPROC16 handler )
{ {
TRACE("Set real mode interrupt vector %02x <- %04x:%04x\n", TRACE("Set real mode interrupt vector %02x <- %04x:%04x\n",
intnum, HIWORD(handler), LOWORD(handler) ); intnum, HIWORD(handler), LOWORD(handler) );
((FARPROC16*)0)[intnum] = handler; *DOSVM_GetRMVector( intnum ) = handler;
} }