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- /* This is file VALLOC.H */
- /*
- ** Copyright (C) 1993 DJ Delorie, 24 Kirsten Ave, Rochester NH 03867-2954
- **
- ** This file is distributed under the terms listed in the document
- ** "copying.dj", available from DJ Delorie at the address above.
- ** A copy of "copying.dj" should accompany this file; if not, a copy
- ** should be available from where this file was obtained. This file
- ** may not be distributed without a verbatim copy of "copying.dj".
- **
- ** This file is distributed WITHOUT ANY WARRANTY; without even the implied
- ** warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #ifndef _VALLOC_H_
- #define _VALLOC_H_
-
- #define VA_640 0 /* always deal with logical page numbers 0..255 */
- #define VA_1M 1 /* always deal with physical page numbers */
-
- /*
- ** These functions deal with page *numbers*
- ** pn << 8 = segment number
- ** pn << 12 = physical address
- ** pn << 24 = seg:ofs
- */
-
- void valloc_init(void);
- void valloc_uninit(void);
-
- unsigned valloc(int where);
- void vfree(void);
- void vcpi_flush(void);
-
- void valloc_shrink_rmem(int pages);
-
- /* These return *pages* not bytes, and don't get called in DPMI mode */
- unsigned valloc_max_size(void);
- unsigned valloc_used(void);
-
- extern int use_xms;
-
- #endif
-