ref: 8680acdefff5d3ff4190431884eed585a9da6294
dir: /Game/src/audiolib/nodpmi.c/
/* Copyright (C) 1994-1995 Apogee Software, Ltd. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /********************************************************************** module: DPMI.C author: James R. Dose date: April 8, 1994 Functions for performing DPMI calls. (c) Copyright 1994 James R. Dose. All Rights Reserved. **********************************************************************/ #include <stdlib.h> #include <string.h> #include "dpmi.h" #define TRUE ( 1 == 1 ) #define FALSE ( !TRUE ) /*--------------------------------------------------------------------- Function: DPMI_GetRealModeVector Returns the vector of a real mode interrupt. ---------------------------------------------------------------------*/ uint32_t DPMI_GetRealModeVector ( int num ) { return 0; } /*--------------------------------------------------------------------- Function: DPMI_CallRealModeFunction Performs a call to a real mode function. ---------------------------------------------------------------------*/ int DPMI_CallRealModeFunction ( dpmi_regs *callregs ) { return( DPMI_Ok ); } /*--------------------------------------------------------------------- Function: DPMI_LockMemory Locks a region of memory to keep the virtual memory manager from paging the region out. ---------------------------------------------------------------------*/ int DPMI_LockMemory ( void *address, unsigned length ) { return ( DPMI_Ok ); } /*--------------------------------------------------------------------- Function: DPMI_LockMemoryRegion Locks a region of memory to keep the virtual memory manager from paging the region out. ---------------------------------------------------------------------*/ int DPMI_LockMemoryRegion ( void *start, void *end ) { int status; status = DPMI_LockMemory( start, ( char * )end - ( char * )start ); return( status ); } /*--------------------------------------------------------------------- Function: DPMI_UnlockMemory Unlocks a region of memory that was previously locked. ---------------------------------------------------------------------*/ int DPMI_UnlockMemory ( void *address, unsigned length ) { return ( DPMI_Ok ); } /*--------------------------------------------------------------------- Function: DPMI_UnlockMemoryRegion Unlocks a region of memory that was previously locked. ---------------------------------------------------------------------*/ int DPMI_UnlockMemoryRegion ( void *start, void *end ) { int status; status = DPMI_UnlockMemory( start, ( char * )end - ( char * )start ); return( status ); } int DPMI_GetDOSMemory( void **ptr, int *descriptor, unsigned length ) { /* Lovely... */ *ptr = (void *)malloc(length); *descriptor = (int) *ptr; return (descriptor == 0) ? DPMI_Error : DPMI_Ok; } int DPMI_FreeDOSMemory( int descriptor ) { free((void *)descriptor); return (descriptor == 0) ? DPMI_Error : DPMI_Ok; }