Bochs/bochs/plex86/kernel/host-null.c
Kevin Lawton 0768d01522 Added plex86 directory to bochs. This directory contains the
new experimental stripped-down version of plex86, which is now
  a user-code-only VM.  I ripped out all the fancy stuff in plex86,
  such that under that right conditions, user-code (protection level 3)
  can run at near native speeds inside the plex86 VM.
The general idea is that bochs emulates all the initial real-mode code,
  and guest kernel code (protection level 0).  When it senses the
  right conditions (like the context switches to user-code), a shim
  is called to execute the guest inside the plex86 VM.  All guest-generated
  faults/exceptions are then forwarded back to bochs to be handled in
  the emulator.
Actually, I'm not yet adding the mods to the bochs code (other than
  the shim code which is in a separate file), until I hear that we're
  back in a more development mode with bochs after the 2.0 release.
The plex86 subdirectory is really a separate project.  It's just more
  convenient to co-develop it with bochs for now.  Both projects are
  currently LGPL, but each should be taken to be a separate project,
  and have their own license file.  Plex86 (it's only a kernel driver
  now) could ultimately be used with other projects, as it's modular.
  I talked with Bryce, and we both agreed it's OK to keep plex86 as
  a subdir in bochs for now.
2003-01-01 17:32:06 +00:00

152 lines
2.5 KiB
C

/*
* plex86: run multiple x86 operating systems concurrently
* Copyright (C) 1999-2003 Kevin P. Lawton
*
* host-null.c: host OS specific stubs. These provide a reference for
* ports of plex86 to various host OSes.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "plex86.h"
#define IN_HOST_SPACE
#include "monitor.h"
/* Note: for comments on what various functions are expected to do, as
* well as a reference implemntation, read the 'host-linux.c' file.
* It's likely the most up-to-date.
*/
/* OS specific includes here. */
/* Some declarations for the entry points etc here. */
monitor_pages_t monitor_pages;
#define NULL 0
int
main(int argc, char *argv[])
{
vm_t *vm = NULL;
genericModuleInit();
genericDeviceOpen(vm);
initMonitor(vm);
initGuestPhyMem(vm);
ioctlGeneric(vm, NULL, NULL, 0, 0);
return(0);
}
void
reserve_guest_pages(vm_t *vm)
{
}
void
unreserve_guest_pages(vm_t *vm)
{
}
unsigned
hostIdle(void)
{
return 0;
}
void *
hostAllocZeroedMem(unsigned long size)
{
return 0;
}
void
hostFreeMem(void *ptr)
{
}
void *
hostAllocZeroedPage(void)
{
return 0;
}
void
hostFreePage(void *ptr)
{
}
unsigned
hostGetAllocedMemPhyPages(Bit32u *page, int max_pages, void *ptr, unsigned size)
{
return 0;
}
Bit32u
hostGetAllocedPagePhyPage(void *ptr)
{
return 0;
}
void
hostPrint(char *fmt, ...)
{
}
int
hostConvertPlex86Errno(unsigned ret)
{
return 0;
}
Bit32u
hostKernelOffset(void)
{
return 0;
}
unsigned
hostMMapCheck(void *i, void *f)
{
return 0;
}
void
hostModuleCountReset(vm_t *vm, void *inode, void *filp)
{
}
unsigned long
hostCopyFromUser(void *to, void *from, unsigned long len)
{
return 0;
}
unsigned long
hostCopyToUser(void *to, void *from, unsigned long len)
{
return 0;
}