981 lines
35 KiB
C
981 lines
35 KiB
C
/****************************************************************************
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*
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* SciTech OS Portability Manager Library
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*
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* ========================================================================
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*
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* The contents of this file are subject to the SciTech MGL Public
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* License Version 1.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.scitechsoft.com/mgl-license.txt
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*
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* Software distributed under the License is distributed on an
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* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc.
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*
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* The Initial Developer of the Original Code is SciTech Software, Inc.
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* All Rights Reserved.
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*
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* ========================================================================
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*
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* Language: ANSI C
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* Environment: *** TODO: ADD YOUR OS ENVIRONMENT NAME HERE ***
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*
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* Description: Implementation for the OS Portability Manager Library, which
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* contains functions to implement OS specific services in a
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* generic, cross platform API. Porting the OS Portability
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* Manager library is the first step to porting any SciTech
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* products to a new platform.
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*
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****************************************************************************/
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#include "pmapi.h"
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#include "drvlib/os/os.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/* TODO: Include any OS specific headers here! */
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/*--------------------------- Global variables ----------------------------*/
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/* TODO: If you support access to the BIOS, the following VESABuf globals */
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/* keep track of a single VESA transfer buffer. If you don't support */
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/* access to the BIOS, remove these variables. */
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static uint VESABuf_len = 1024; /* Length of the VESABuf buffer */
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static void *VESABuf_ptr = NULL; /* Near pointer to VESABuf */
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static uint VESABuf_rseg; /* Real mode segment of VESABuf */
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static uint VESABuf_roff; /* Real mode offset of VESABuf */
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static void (PMAPIP fatalErrorCleanup)(void) = NULL;
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/*----------------------------- Implementation ----------------------------*/
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/****************************************************************************
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REMARKS:
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Initialise the PM library.
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****************************************************************************/
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void PMAPI PM_init(void)
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{
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/* TODO: Do any initialisation in here. This includes getting IOPL */
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/* access for the process calling PM_init. This will get called */
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/* more than once. */
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/* TODO: If you support the supplied MTRR register stuff (you need to */
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/* be at ring 0 for this!), you should initialise it in here. */
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/* MTRR_init(); */
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}
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/****************************************************************************
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REMARKS:
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Return the operating system type identifier.
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****************************************************************************/
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long PMAPI PM_getOSType(void)
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{
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/* TODO: Change this to return the define for your OS from drvlib/os.h */
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return _OS_MYOS;
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}
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/****************************************************************************
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REMARKS:
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Return the runtime type identifier (always PM_386 for protected mode)
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****************************************************************************/
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int PMAPI PM_getModeType(void)
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{ return PM_386; }
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/****************************************************************************
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REMARKS:
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Add a file directory separator to the end of the filename.
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****************************************************************************/
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void PMAPI PM_backslash(
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char *s)
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{
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uint pos = strlen(s);
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if (s[pos-1] != '/') {
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s[pos] = '/';
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s[pos+1] = '\0';
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}
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}
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/****************************************************************************
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REMARKS:
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Add a user defined PM_fatalError cleanup function.
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****************************************************************************/
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void PMAPI PM_setFatalErrorCleanup(
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void (PMAPIP cleanup)(void))
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{
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fatalErrorCleanup = cleanup;
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}
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/****************************************************************************
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REMARKS:
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Report a fatal error condition and halt the program.
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****************************************************************************/
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void PMAPI PM_fatalError(
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const char *msg)
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{
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/* TODO: If you are running in a GUI environment without a console, */
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/* this needs to be changed to bring up a fatal error message */
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/* box and terminate the program. */
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if (fatalErrorCleanup)
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fatalErrorCleanup();
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fprintf(stderr,"%s\n", msg);
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exit(1);
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}
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/****************************************************************************
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REMARKS:
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Exit handler to kill the VESA transfer buffer.
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****************************************************************************/
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static void ExitVBEBuf(void)
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{
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/* TODO: If you do not have BIOS access, remove this function. */
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if (VESABuf_ptr)
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PM_freeRealSeg(VESABuf_ptr);
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VESABuf_ptr = 0;
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}
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/****************************************************************************
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REMARKS:
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Allocate the real mode VESA transfer buffer for communicating with the BIOS.
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****************************************************************************/
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void * PMAPI PM_getVESABuf(
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uint *len,
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uint *rseg,
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uint *roff)
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{
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/* TODO: If you do not have BIOS access, simply delete the guts of */
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/* this function and return NULL. */
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if (!VESABuf_ptr) {
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/* Allocate a global buffer for communicating with the VESA VBE */
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if ((VESABuf_ptr = PM_allocRealSeg(VESABuf_len, &VESABuf_rseg, &VESABuf_roff)) == NULL)
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return NULL;
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atexit(ExitVBEBuf);
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}
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*len = VESABuf_len;
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*rseg = VESABuf_rseg;
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*roff = VESABuf_roff;
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return VESABuf_ptr;
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}
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/****************************************************************************
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REMARKS:
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Check if a key has been pressed.
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****************************************************************************/
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int PMAPI PM_kbhit(void)
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{
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/* TODO: This function checks if a key is available to be read. This */
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/* should be implemented, but is mostly used by the test programs */
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/* these days. */
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return true;
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}
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/****************************************************************************
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REMARKS:
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Wait for and return the next keypress.
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****************************************************************************/
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int PMAPI PM_getch(void)
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{
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/* TODO: This returns the ASCII code of the key pressed. This */
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/* should be implemented, but is mostly used by the test programs */
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/* these days. */
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return 0xD;
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}
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/****************************************************************************
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REMARKS:
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Open a fullscreen console mode for output.
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****************************************************************************/
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int PMAPI PM_openConsole(void)
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{
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/* TODO: Opens up a fullscreen console for graphics output. If your */
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/* console does not have graphics/text modes, this can be left */
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/* empty. The main purpose of this is to disable console switching */
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/* when in graphics modes if you can switch away from fullscreen */
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/* consoles (if you want to allow switching, this can be done */
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/* elsewhere with a full save/restore state of the graphics mode). */
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return 0;
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}
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/****************************************************************************
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REMARKS:
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Return the size of the state buffer used to save the console state.
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****************************************************************************/
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int PMAPI PM_getConsoleStateSize(void)
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{
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/* TODO: Returns the size of the console state buffer used to save the */
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/* state of the console before going into graphics mode. This is */
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/* used to restore the console back to normal when we are done. */
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return 1;
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}
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/****************************************************************************
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REMARKS:
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Save the state of the console into the state buffer.
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****************************************************************************/
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void PMAPI PM_saveConsoleState(
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void *stateBuf,
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int console_id)
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{
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/* TODO: Saves the state of the console into the state buffer. This is */
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/* used to restore the console back to normal when we are done. */
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/* We will always restore 80x25 text mode after being in graphics */
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/* mode, so if restoring text mode is all you need to do this can */
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/* be left empty. */
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}
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/****************************************************************************
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REMARKS:
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Restore the state of the console from the state buffer.
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****************************************************************************/
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void PMAPI PM_restoreConsoleState(
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const void *stateBuf,
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int console_id)
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{
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/* TODO: Restore the state of the console from the state buffer. This is */
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/* used to restore the console back to normal when we are done. */
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/* We will always restore 80x25 text mode after being in graphics */
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/* mode, so if restoring text mode is all you need to do this can */
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/* be left empty. */
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}
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/****************************************************************************
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REMARKS:
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Close the console and return to non-fullscreen console mode.
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****************************************************************************/
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void PMAPI PM_closeConsole(
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int console_id)
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{
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/* TODO: Close the console when we are done, going back to text mode. */
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}
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/****************************************************************************
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REMARKS:
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Set the location of the OS console cursor.
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****************************************************************************/
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void PM_setOSCursorLocation(
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int x,
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int y)
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{
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/* TODO: Set the OS console cursor location to the new value. This is */
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/* generally used for new OS ports (used mostly for DOS). */
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}
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/****************************************************************************
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REMARKS:
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Set the width of the OS console.
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****************************************************************************/
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void PM_setOSScreenWidth(
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int width,
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int height)
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{
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/* TODO: Set the OS console screen width. This is generally unused for */
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/* new OS ports. */
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}
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/****************************************************************************
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REMARKS:
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Set the real time clock handler (used for software stereo modes).
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****************************************************************************/
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ibool PMAPI PM_setRealTimeClockHandler(
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PM_intHandler ih,
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int frequency)
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{
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/* TODO: Install a real time clock interrupt handler. Normally this */
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/* will not be supported from most OS'es in user land, so an */
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/* alternative mechanism is needed to enable software stereo. */
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/* Hence leave this unimplemented unless you have a high priority */
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/* mechanism to call the 32-bit callback when the real time clock */
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/* interrupt fires. */
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return false;
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}
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/****************************************************************************
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REMARKS:
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Set the real time clock frequency (for stereo modes).
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****************************************************************************/
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void PMAPI PM_setRealTimeClockFrequency(
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int frequency)
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{
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/* TODO: Set the real time clock interrupt frequency. Used for stereo */
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/* LC shutter glasses when doing software stereo. Usually sets */
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/* the frequency to around 2048 Hz. */
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}
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/****************************************************************************
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REMARKS:
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Restore the original real time clock handler.
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****************************************************************************/
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void PMAPI PM_restoreRealTimeClockHandler(void)
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{
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/* TODO: Restores the real time clock handler. */
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}
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/****************************************************************************
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REMARKS:
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Return the current operating system path or working directory.
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****************************************************************************/
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char * PMAPI PM_getCurrentPath(
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char *path,
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int maxLen)
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{
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return getcwd(path,maxLen);
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}
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/****************************************************************************
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REMARKS:
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Return the drive letter for the boot drive.
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****************************************************************************/
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char PMAPI PM_getBootDrive(void)
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{
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/* TODO: Return the boot drive letter for the OS. Normally this is 'c' */
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/* for DOS based OS'es and '/' for Unices. */
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return '/';
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}
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/****************************************************************************
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REMARKS:
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Return the path to the VBE/AF driver files (legacy and not used).
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****************************************************************************/
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const char * PMAPI PM_getVBEAFPath(void)
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{
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return PM_getNucleusConfigPath();
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}
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/****************************************************************************
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REMARKS:
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Return the path to the Nucleus driver files.
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****************************************************************************/
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const char * PMAPI PM_getNucleusPath(void)
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{
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/* TODO: Change this to the default path to Nucleus driver files. The */
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/* following is the default for Unices. */
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char *env = getenv("NUCLEUS_PATH");
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return env ? env : "/usr/lib/nucleus";
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}
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/****************************************************************************
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REMARKS:
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Return the path to the Nucleus configuration files.
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****************************************************************************/
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const char * PMAPI PM_getNucleusConfigPath(void)
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{
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static char path[256];
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strcpy(path,PM_getNucleusPath());
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PM_backslash(path);
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strcat(path,"config");
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return path;
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}
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/****************************************************************************
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REMARKS:
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Return a unique identifier for the machine if possible.
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****************************************************************************/
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const char * PMAPI PM_getUniqueID(void)
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{
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/* TODO: Return a unique ID for the machine. If a unique ID is not */
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/* available, return the machine name. */
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static char buf[128];
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gethostname(buf, 128);
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return buf;
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}
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/****************************************************************************
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REMARKS:
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Get the name of the machine on the network.
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****************************************************************************/
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const char * PMAPI PM_getMachineName(void)
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{
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/* TODO: Return the network machine name for the machine. */
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static char buf[128];
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gethostname(buf, 128);
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return buf;
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}
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/****************************************************************************
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REMARKS:
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Return a pointer to the real mode BIOS data area.
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****************************************************************************/
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void * PMAPI PM_getBIOSPointer(void)
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{
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/* TODO: This returns a pointer to the real mode BIOS data area. If you */
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/* do not support BIOS access, you can simply return NULL here. */
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if (!zeroPtr)
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zeroPtr = PM_mapPhysicalAddr(0,0xFFFFF,true);
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return (void*)(zeroPtr + 0x400);
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}
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/****************************************************************************
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REMARKS:
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Return a pointer to 0xA0000 physical VGA graphics framebuffer.
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****************************************************************************/
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void * PMAPI PM_getA0000Pointer(void)
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{
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static void *bankPtr;
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if (!bankPtr)
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bankPtr = PM_mapPhysicalAddr(0xA0000,0xFFFF,true);
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return bankPtr;
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}
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/****************************************************************************
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REMARKS:
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Map a physical address to a linear address in the callers process.
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****************************************************************************/
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void * PMAPI PM_mapPhysicalAddr(
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ulong base,
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ulong limit,
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ibool isCached)
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{
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/* TODO: This function maps a physical memory address to a linear */
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/* address in the address space of the calling process. */
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/* NOTE: This function *must* be able to handle any phsyical base */
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/* address, and hence you will have to handle rounding of */
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/* the physical base address to a page boundary (ie: 4Kb on */
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/* x86 CPU's) to be able to properly map in the memory */
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/* region. */
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/* NOTE: If possible the isCached bit should be used to ensure that */
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/* the PCD (Page Cache Disable) and PWT (Page Write Through) */
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/* bits are set to disable caching for a memory mapping used */
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/* for MMIO register access. We also disable caching using */
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/* the MTRR registers for Pentium Pro and later chipsets so if */
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/* MTRR support is enabled for your OS then you can safely ignore */
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/* the isCached flag and always enable caching in the page */
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/* tables. */
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return NULL;
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}
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/****************************************************************************
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REMARKS:
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Free a physical address mapping allocated by PM_mapPhysicalAddr.
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****************************************************************************/
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void PMAPI PM_freePhysicalAddr(
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void *ptr,
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ulong limit)
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{
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/* TODO: This function will free a physical memory mapping previously */
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/* allocated with PM_mapPhysicalAddr() if at all possible. If */
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/* you can't free physical memory mappings, simply do nothing. */
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}
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/****************************************************************************
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REMARKS:
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Find the physical address of a linear memory address in current process.
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****************************************************************************/
|
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ulong PMAPI PM_getPhysicalAddr(void *p)
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{
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/* TODO: This function should find the physical address of a linear */
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/* address. */
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return 0xFFFFFFFFUL;
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}
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void PMAPI PM_sleep(ulong milliseconds)
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{
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/* TODO: Put the process to sleep for milliseconds */
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}
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|
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int PMAPI PM_getCOMPort(int port)
|
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{
|
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/* TODO: Re-code this to determine real values using the Plug and Play */
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/* manager for the OS. */
|
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switch (port) {
|
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case 0: return 0x3F8;
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case 1: return 0x2F8;
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}
|
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return 0;
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}
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|
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int PMAPI PM_getLPTPort(int port)
|
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{
|
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/* TODO: Re-code this to determine real values using the Plug and Play */
|
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/* manager for the OS. */
|
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switch (port) {
|
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case 0: return 0x3BC;
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case 1: return 0x378;
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case 2: return 0x278;
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}
|
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return 0;
|
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}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Allocate a block of (unnamed) shared memory.
|
|
****************************************************************************/
|
|
void * PMAPI PM_mallocShared(
|
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long size)
|
|
{
|
|
/* TODO: This is used to allocate memory that is shared between process */
|
|
/* that all access the common Nucleus drivers via a common display */
|
|
/* driver DLL. If your OS does not support shared memory (or if */
|
|
/* the display driver does not need to allocate shared memory */
|
|
/* for each process address space), this should just call PM_malloc. */
|
|
return PM_malloc(size);
|
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}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Free a block of shared memory.
|
|
****************************************************************************/
|
|
void PMAPI PM_freeShared(
|
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void *ptr)
|
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{
|
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/* TODO: Free the shared memory block. This will be called in the context */
|
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/* of the original calling process that allocated the shared */
|
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/* memory with PM_mallocShared. Simply call PM_free if you do not */
|
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/* need this. */
|
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PM_free(ptr);
|
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}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Map a linear memory address to the calling process address space. The
|
|
address will have been allocated in another process using the
|
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PM_mapPhysicalAddr function.
|
|
****************************************************************************/
|
|
void * PMAPI PM_mapToProcess(
|
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void *base,
|
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ulong limit)
|
|
{
|
|
/* TODO: This function is used to map a physical memory mapping */
|
|
/* previously allocated with PM_mapPhysicalAddr into the */
|
|
/* address space of the calling process. If the memory mapping */
|
|
/* allocated by PM_mapPhysicalAddr is global to all processes, */
|
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/* simply return the pointer. */
|
|
|
|
/* NOTE: This function must also handle rounding to page boundaries, */
|
|
/* since this function is used to map in shared memory buffers */
|
|
/* allocated with PM_mapPhysicalAddr(). Hence if you aligned */
|
|
/* the physical address above, then you also need to do it here. */
|
|
return base;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Map a real mode pointer to a protected mode pointer.
|
|
****************************************************************************/
|
|
void * PMAPI PM_mapRealPointer(
|
|
uint r_seg,
|
|
uint r_off)
|
|
{
|
|
/* TODO: This function maps a real mode memory pointer into the */
|
|
/* calling processes address space as a 32-bit near pointer. If */
|
|
/* you do not support BIOS access, simply return NULL here. */
|
|
if (!zeroPtr)
|
|
zeroPtr = PM_mapPhysicalAddr(0,0xFFFFF);
|
|
return (void*)(zeroPtr + MK_PHYS(r_seg,r_off));
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Allocate a block of real mode memory
|
|
****************************************************************************/
|
|
void * PMAPI PM_allocRealSeg(
|
|
uint size,
|
|
uint *r_seg,
|
|
uint *r_off)
|
|
{
|
|
/* TODO: This function allocates a block of real mode memory for the */
|
|
/* calling process used to communicate with real mode BIOS */
|
|
/* functions. If you do not support BIOS access, simply return */
|
|
/* NULL here. */
|
|
return NULL;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Free a block of real mode memory.
|
|
****************************************************************************/
|
|
void PMAPI PM_freeRealSeg(
|
|
void *mem)
|
|
{
|
|
/* TODO: Frees a previously allocated real mode memory block. If you */
|
|
/* do not support BIOS access, this function should be empty. */
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Issue a real mode interrupt (parameters in DPMI compatible structure)
|
|
****************************************************************************/
|
|
void PMAPI DPMI_int86(
|
|
int intno,
|
|
DPMI_regs *regs)
|
|
{
|
|
/* TODO: This function calls the real mode BIOS using the passed in */
|
|
/* register structure. If you do not support real mode BIOS */
|
|
/* access, this function should be empty. */
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Issue a real mode interrupt.
|
|
****************************************************************************/
|
|
int PMAPI PM_int86(
|
|
int intno,
|
|
RMREGS *in,
|
|
RMREGS *out)
|
|
{
|
|
/* TODO: This function calls the real mode BIOS using the passed in */
|
|
/* register structure. If you do not support real mode BIOS */
|
|
/* access, this function should return 0. */
|
|
return 0;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Issue a real mode interrupt.
|
|
****************************************************************************/
|
|
int PMAPI PM_int86x(
|
|
int intno,
|
|
RMREGS *in,
|
|
RMREGS *out,
|
|
RMSREGS *sregs)
|
|
{
|
|
/* TODO: This function calls the real mode BIOS using the passed in */
|
|
/* register structure. If you do not support real mode BIOS */
|
|
/* access, this function should return 0. */
|
|
return 0;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Call a real mode far function.
|
|
****************************************************************************/
|
|
void PMAPI PM_callRealMode(
|
|
uint seg,
|
|
uint off,
|
|
RMREGS *in,
|
|
RMSREGS *sregs)
|
|
{
|
|
/* TODO: This function calls a real mode far function with a far call. */
|
|
/* If you do not support BIOS access, this function should be */
|
|
/* empty. */
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Return the amount of available memory.
|
|
****************************************************************************/
|
|
void PMAPI PM_availableMemory(
|
|
ulong *physical,
|
|
ulong *total)
|
|
{
|
|
/* TODO: Report the amount of available memory, both the amount of */
|
|
/* physical memory left and the amount of virtual memory left. */
|
|
/* If the OS does not provide these services, report 0's. */
|
|
*physical = *total = 0;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Allocate a block of locked, physical memory for DMA operations.
|
|
****************************************************************************/
|
|
void * PMAPI PM_allocLockedMem(
|
|
uint size,
|
|
ulong *physAddr,
|
|
ibool contiguous,
|
|
ibool below16M)
|
|
{
|
|
/* TODO: Allocate a block of locked, physical memory of the specified */
|
|
/* size. This is used for bus master operations. If this is not */
|
|
/* supported by the OS, return NULL and bus mastering will not */
|
|
/* be used. */
|
|
return NULL;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Free a block of locked physical memory.
|
|
****************************************************************************/
|
|
void PMAPI PM_freeLockedMem(
|
|
void *p,
|
|
uint size,
|
|
ibool contiguous)
|
|
{
|
|
/* TODO: Free a memory block allocated with PM_allocLockedMem. */
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Call the VBE/Core software interrupt to change display banks.
|
|
****************************************************************************/
|
|
void PMAPI PM_setBankA(
|
|
int bank)
|
|
{
|
|
RMREGS regs;
|
|
|
|
/* TODO: This does a bank switch function by calling the real mode */
|
|
/* VESA BIOS. If you do not support BIOS access, this function should */
|
|
/* be empty. */
|
|
regs.x.ax = 0x4F05;
|
|
regs.x.bx = 0x0000;
|
|
regs.x.dx = bank;
|
|
PM_int86(0x10,®s,®s);
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Call the VBE/Core software interrupt to change display banks.
|
|
****************************************************************************/
|
|
void PMAPI PM_setBankAB(
|
|
int bank)
|
|
{
|
|
RMREGS regs;
|
|
|
|
/* TODO: This does a bank switch function by calling the real mode */
|
|
/* VESA BIOS. If you do not support BIOS access, this function should */
|
|
/* be empty. */
|
|
regs.x.ax = 0x4F05;
|
|
regs.x.bx = 0x0000;
|
|
regs.x.dx = bank;
|
|
PM_int86(0x10,®s,®s);
|
|
regs.x.ax = 0x4F05;
|
|
regs.x.bx = 0x0001;
|
|
regs.x.dx = bank;
|
|
PM_int86(0x10,®s,®s);
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Call the VBE/Core software interrupt to change display start address.
|
|
****************************************************************************/
|
|
void PMAPI PM_setCRTStart(
|
|
int x,
|
|
int y,
|
|
int waitVRT)
|
|
{
|
|
RMREGS regs;
|
|
|
|
/* TODO: This changes the display start address by calling the real mode */
|
|
/* VESA BIOS. If you do not support BIOS access, this function */
|
|
/* should be empty. */
|
|
regs.x.ax = 0x4F07;
|
|
regs.x.bx = waitVRT;
|
|
regs.x.cx = x;
|
|
regs.x.dx = y;
|
|
PM_int86(0x10,®s,®s);
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Enable write combining for the memory region.
|
|
****************************************************************************/
|
|
ibool PMAPI PM_enableWriteCombine(
|
|
ulong base,
|
|
ulong length,
|
|
uint type)
|
|
{
|
|
/* TODO: This function should enable Pentium Pro and Pentium II MTRR */
|
|
/* write combining for the passed in physical memory base address */
|
|
/* and length. Normally this is done via calls to an OS specific */
|
|
/* device driver as this can only be done at ring 0. */
|
|
/* */
|
|
/* NOTE: This is a *very* important function to implement! If you do */
|
|
/* not implement, graphics performance on the latest Intel chips */
|
|
/* will be severly impaired. For sample code that can be used */
|
|
/* directly in a ring 0 device driver, see the MSDOS implementation */
|
|
/* which includes assembler code to do this directly (if the */
|
|
/* program is running at ring 0). */
|
|
return false;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Execute the POST on the secondary BIOS for a controller.
|
|
****************************************************************************/
|
|
ibool PMAPI PM_doBIOSPOST(
|
|
ushort axVal,
|
|
ulong BIOSPhysAddr,
|
|
void *mappedBIOS)
|
|
{
|
|
/* TODO: This function is used to run the BIOS POST code on a secondary */
|
|
/* controller to initialise it for use. This is not necessary */
|
|
/* for multi-controller operation, but it will make it a lot */
|
|
/* more convenicent for end users (otherwise they have to boot */
|
|
/* the system once with the secondary controller as primary, and */
|
|
/* then boot with both controllers installed). */
|
|
/* */
|
|
/* Even if you don't support full BIOS access, it would be */
|
|
/* adviseable to be able to POST the secondary controllers in the */
|
|
/* system using this function as a minimum requirement. Some */
|
|
/* graphics hardware has registers that contain values that only */
|
|
/* the BIOS knows about, which makes bring up a card from cold */
|
|
/* reset difficult if the BIOS has not POST'ed it. */
|
|
return false;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Load an OS specific shared library or DLL. If the OS does not support
|
|
shared libraries, simply return NULL.
|
|
****************************************************************************/
|
|
PM_MODULE PMAPI PM_loadLibrary(
|
|
const char *szDLLName)
|
|
{
|
|
/* TODO: This function should load a native shared library from disk */
|
|
/* given the path to the library. */
|
|
(void)szDLLName;
|
|
return NULL;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Get the address of a named procedure from a shared library.
|
|
****************************************************************************/
|
|
void * PMAPI PM_getProcAddress(
|
|
PM_MODULE hModule,
|
|
const char *szProcName)
|
|
{
|
|
/* TODO: This function should return the address of a named procedure */
|
|
/* from a native shared library. */
|
|
(void)hModule;
|
|
(void)szProcName;
|
|
return NULL;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Unload a shared library.
|
|
****************************************************************************/
|
|
void PMAPI PM_freeLibrary(
|
|
PM_MODULE hModule)
|
|
{
|
|
/* TODO: This function free a previously loaded native shared library. */
|
|
(void)hModule;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Enable requested I/O privledge level (usually only to set to a value of
|
|
3, and then restore it back again). If the OS is protected this function
|
|
must be implemented in order to enable I/O port access for ring 3
|
|
applications. The function should return the IOPL level active before
|
|
the switch occurred so it can be properly restored.
|
|
****************************************************************************/
|
|
int PMAPI PM_setIOPL(
|
|
int level)
|
|
{
|
|
/* TODO: This function should enable IOPL for the task (if IOPL is */
|
|
/* not always enabled for the app through some other means). */
|
|
return level;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Function to find the first file matching a search criteria in a directory.
|
|
****************************************************************************/
|
|
void *PMAPI PM_findFirstFile(
|
|
const char *filename,
|
|
PM_findData *findData)
|
|
{
|
|
/* TODO: This function should start a directory enumeration search */
|
|
/* given the filename (with wildcards). The data should be */
|
|
/* converted and returned in the findData standard form. */
|
|
(void)filename;
|
|
(void)findData;
|
|
return PM_FILE_INVALID;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Function to find the next file matching a search criteria in a directory.
|
|
****************************************************************************/
|
|
ibool PMAPI PM_findNextFile(
|
|
void *handle,
|
|
PM_findData *findData)
|
|
{
|
|
/* TODO: This function should find the next file in directory enumeration */
|
|
/* search given the search criteria defined in the call to */
|
|
/* PM_findFirstFile. The data should be converted and returned */
|
|
/* in the findData standard form. */
|
|
(void)handle;
|
|
(void)findData;
|
|
return false;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Function to close the find process
|
|
****************************************************************************/
|
|
void PMAPI PM_findClose(
|
|
void *handle)
|
|
{
|
|
/* TODO: This function should close the find process. This may do */
|
|
/* nothing for some OS'es. */
|
|
(void)handle;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Function to determine if a drive is a valid drive or not. Under Unix this
|
|
function will return false for anything except a value of 3 (considered
|
|
the root drive, and equivalent to C: for non-Unix systems). The drive
|
|
numbering is:
|
|
|
|
1 - Drive A:
|
|
2 - Drive B:
|
|
3 - Drive C:
|
|
etc
|
|
|
|
****************************************************************************/
|
|
ibool PMAPI PM_driveValid(
|
|
char drive)
|
|
{
|
|
if (drive == 3)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Function to get the current working directory for the specififed drive.
|
|
Under Unix this will always return the current working directory regardless
|
|
of what the value of 'drive' is.
|
|
****************************************************************************/
|
|
void PMAPI PM_getdcwd(
|
|
int drive,
|
|
char *dir,
|
|
int len)
|
|
{
|
|
(void)drive;
|
|
getcwd(dir,len);
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Function to change the file attributes for a specific file.
|
|
****************************************************************************/
|
|
void PMAPI PM_setFileAttr(
|
|
const char *filename,
|
|
uint attrib)
|
|
{
|
|
/* TODO: Set the file attributes for a file */
|
|
(void)filename;
|
|
(void)attrib;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Function to create a directory.
|
|
****************************************************************************/
|
|
ibool PMAPI PM_mkdir(
|
|
const char *filename)
|
|
{
|
|
return mkdir(filename) == 0;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Function to remove a directory.
|
|
****************************************************************************/
|
|
ibool PMAPI PM_rmdir(
|
|
const char *filename)
|
|
{
|
|
return rmdir(filename) == 0;
|
|
}
|