1 files changed, 85 insertions, 0 deletions
diff --git a/private/os2/inc/os2tile.h b/private/os2/inc/os2tile.h
new file mode 100644
index 000000000..9007cf290
--- /dev/null
+++ b/private/os2/inc/os2tile.h
@@ -0,0 +1,85 @@
+/*++
+
+Copyright (c) 1992  Microsoft Corporation
+
+Module Name:
+
+    os2tile.h
+
+Abstract:
+
+    Defines the Tiling scheme number for os2ss. Included by thunkcom, client
+    loader & server.
+
+Author:
+
+    Yaron Shamir (YaronS) 22-Oct-1992
+
+Revision History:
+
+    Patrick Questembert (PatrickQ) 04-Nov-92
+      Fixed FLATTOSEL macro (needed ULONG cast) + changed ULONG cast position so
+      that FLAT may be a pointer to types of any length.
+
+--*/
+
+
+#define BASE_TILE           0x38000000
+#define BASE_TILE_ZERO_BITS 1
+
+//
+// Preallocated areas at the top of the tiled region
+//
+
+#define _64K            (64L*1024)
+#define _512M           ((512L*1024)*1024)
+
+#define OD2TILEDHEAP_SIZE   20*_64K
+
+#define VIOSECTION_BASE     (BASE_TILE + _512M - _64K)  // This must be the last one
+#define OD2TILEDHEAP_BASE        (VIOSECTION_BASE - OD2TILEDHEAP_SIZE)
+#define OD2ENVIRONMENT_BASE (OD2TILEDHEAP_BASE - _64K)
+#define GINFOSEG_BASE       (OD2ENVIRONMENT_BASE - _64K)
+#define R2STACKS_BASE       (GINFOSEG_BASE - _64K)
+#define R2XFER_BASE         (R2STACKS_BASE - _64K)
+#define DOSCALLS_BASE       (R2XFER_BASE - _64K)
+#if PMNT
+// The 3 selectors below are used to reserve the same 2 LDT selectors in each
+//  OS/2 process so that they can map the video memory for PM apps.
+//  PMDISPLAY_DUMMY is required to allow mapping of frame buffer sections where
+//  the 2nd selector is not aligned to 64K + the length crosses the 64K
+//  boundary: in such a case, we need to have the next selector free.
+#define PMDISPLAY_DUMMY     (DOSCALLS_BASE - _64K)
+#define PMDISPLAY_BASE2     (PMDISPLAY_DUMMY - _64K)
+#define PMDISPLAY_BASE1     (PMDISPLAY_BASE2 - _64K)
+#endif
+//
+// OD2MAXSEG_MEM must be set to the lowest virtual address which
+//               is pre-allocated.
+//
+#if PMNT
+#define OD2MAXSEG_MEM       (PMDISPLAY_BASE1)
+#else
+#define OD2MAXSEG_MEM       (DOSCALLS_BASE)
+#endif
+#define OD2MAXSEG_BASE      (OD2MAXSEG_MEM - _64K)
+
+#define SELTOFLAT(SEL) (PVOID) (BASE_TILE + (((SEL) >> 3) << 16))
+#define FLATTOSEL(FLAT) (USHORT) (((((ULONG)(FLAT) - BASE_TILE) & 0x1fff0000) >> 13) | 7)
+#define FARPTRTOFLAT(FARPTR) (PVOID) (BASE_TILE + (((((ULONG)(FARPTR)) >> 19) << 16) | (((ULONG)(FARPTR)) & 0xffff)))
+#define FLATTOFARPTR(FLAT) ( (((((ULONG)(FLAT) - BASE_TILE) & 0x1fff0000) << 3) | 0x00070000) | (((ULONG)(FLAT)) & 0x0000ffff) )
+
+//
+//  The LDT_DISJOINT_ENTRIES parameter defines the number of LDT entries
+//  which are reserved for PROGRAM/DLL loading and shared memory segments.
+//  The entries are reserved at the top of the LDT table.
+//  PROGRAM/DLL segments are allocated from the bottom of the disjoint area
+//  while shared memory segments are allocated from the top of the disjoint
+//  area.
+//
+//  This number MUST be a multiple of 32!
+//
+#define LDT_DISJOINT_ENTRIES 0x1800
+
+#define FIRST_SHARED_SELECTOR ((0x2000-LDT_DISJOINT_ENTRIES)*8)
+