wine/include/ldt.h
Alexandre Julliard 914406f854 Moved LDT handling to libwine.so. Changed the interface to use the
exported LDT_ENTRY structure.
2000-11-14 01:54:49 +00:00

45 lines
1.5 KiB
C

/*
* LDT copy
*
* Copyright 1995 Alexandre Julliard
*/
#ifndef __WINE_LDT_H
#define __WINE_LDT_H
#include "windef.h"
#include "wine/library.h"
#define __AHSHIFT 3 /* don't change! */
#define __AHINCR (1 << __AHSHIFT)
/* Convert a segmented ptr (16:16) to a linear (32) pointer */
#define PTR_SEG_OFF_TO_LIN(seg,off) \
((void*)((char*)wine_ldt_copy.base[LOWORD(seg) >> __AHSHIFT] + (unsigned int)(off)))
#define PTR_REAL_TO_LIN(seg,off) \
((void*)(((unsigned int)(seg) << 4) + LOWORD(off)))
#define PTR_SEG_TO_LIN(ptr) \
PTR_SEG_OFF_TO_LIN(SELECTOROF(ptr),OFFSETOF(ptr))
#define PTR_SEG_OFF_TO_SEGPTR(seg,off) \
((SEGPTR)MAKELONG(off,seg))
#define PTR_SEG_OFF_TO_HUGEPTR(seg,off) \
PTR_SEG_OFF_TO_SEGPTR( (seg) + (HIWORD(off) << __AHSHIFT), LOWORD(off) )
#define W32S_APPLICATION() (PROCESS_Current()->flags & PDB32_WIN32S_PROC)
#define W32S_OFFSET 0x10000
#define W32S_APP2WINE(addr, offset) ((addr)? (DWORD)(addr) + (DWORD)(offset) : 0)
#define W32S_WINE2APP(addr, offset) ((addr)? (DWORD)(addr) - (DWORD)(offset) : 0)
#define FIRST_LDT_ENTRY_TO_ALLOC 17
#define IS_SELECTOR_FREE(sel) (!(wine_ldt_copy.flags[LOWORD(sel) >> __AHSHIFT] & WINE_LDT_FLAGS_ALLOCATED))
/* Determine if sel is a system selector (i.e. not managed by Wine) */
#define IS_SELECTOR_SYSTEM(sel) \
(!((sel) & 4) || ((LOWORD(sel) >> __AHSHIFT) < FIRST_LDT_ENTRY_TO_ALLOC))
#define IS_SELECTOR_32BIT(sel) \
(IS_SELECTOR_SYSTEM(sel) || (wine_ldt_copy.flags[LOWORD(sel) >> __AHSHIFT] & WINE_LDT_FLAGS_32BIT))
#endif /* __WINE_LDT_H */