include/wine/library.h

   1 /*
   2  * Definitions for the Wine library
   3  *
   4  * Copyright 2000 Alexandre Julliard
   5  */
   6
   7 #ifndef __WINE_WINE_LIBRARY_H
   8 #define __WINE_WINE_LIBRARY_H
   9
  10 #include <sys/types.h>
  11 #include "winbase.h"
  12
  13 /* dll loading */
  14
  15 typedef void (*load_dll_callback_t)( void *, const char * );
  16
  17 extern void wine_dll_set_callback( load_dll_callback_t load );
  18 extern void *wine_dll_load( const char *filename, char *error, int errorsize );
  19 extern void *wine_dll_load_main_exe( const char *name, int search_path,
  20                                      char *error, int errorsize );
  21 extern void wine_dll_unload( void *handle );
  22
  23 /* debugging */
  24
  25 extern void wine_dbg_add_option( const char *name, unsigned char set, unsigned char clear );
  26
  27 /* portability */
  28
  29 extern void *wine_anon_mmap( void *start, size_t size, int prot, int flags );
  30
  31 /* errno support */
  32 extern int* (*wine_errno_location)(void);
  33 extern int* (*wine_h_errno_location)(void);
  34
  35 /* LDT management */
  36
  37 extern void wine_ldt_get_entry( unsigned short sel, LDT_ENTRY *entry );
  38 extern int wine_ldt_set_entry( unsigned short sel, const LDT_ENTRY *entry );
  39
  40 /* the local copy of the LDT */
  41 extern struct __wine_ldt_copy
  42 {
  43     void         *base[8192];  /* base address or 0 if entry is free   */
  44     unsigned long limit[8192]; /* limit in bytes or 0 if entry is free */
  45     unsigned char flags[8192]; /* flags (defined below) */
  46 } wine_ldt_copy;
  47
  48 #define WINE_LDT_FLAGS_DATA      0x13  /* Data segment */
  49 #define WINE_LDT_FLAGS_STACK     0x17  /* Stack segment */
  50 #define WINE_LDT_FLAGS_CODE      0x1b  /* Code segment */
  51 #define WINE_LDT_FLAGS_TYPE_MASK 0x1f  /* Mask for segment type */
  52 #define WINE_LDT_FLAGS_32BIT     0x40  /* Segment is 32-bit (code or stack) */
  53 #define WINE_LDT_FLAGS_ALLOCATED 0x80  /* Segment is allocated (no longer free) */
  54
  55 /* helper functions to manipulate the LDT_ENTRY structure */
  56 inline static void wine_ldt_set_base( LDT_ENTRY *ent, const void *base )
  57 {
  58     ent->BaseLow               = (WORD)(unsigned long)base;
  59     ent->HighWord.Bits.BaseMid = (BYTE)((unsigned long)base >> 16);
  60     ent->HighWord.Bits.BaseHi  = (BYTE)((unsigned long)base >> 24);
  61 }
  62 inline static void wine_ldt_set_limit( LDT_ENTRY *ent, unsigned int limit )
  63 {
  64     if ((ent->HighWord.Bits.Granularity = (limit >= 0x100000))) limit >>= 12;
  65     ent->LimitLow = (WORD)limit;
  66     ent->HighWord.Bits.LimitHi = (limit >> 16);
  67 }
  68 inline static void *wine_ldt_get_base( const LDT_ENTRY *ent )
  69 {
  70     return (void *)(ent->BaseLow |
  71                     (unsigned long)ent->HighWord.Bits.BaseMid << 16 |
  72                     (unsigned long)ent->HighWord.Bits.BaseHi << 24);
  73 }
  74 inline static unsigned int wine_ldt_get_limit( const LDT_ENTRY *ent )
  75 {
  76     unsigned int limit = ent->LimitLow | (ent->HighWord.Bits.LimitHi << 16);
  77     if (ent->HighWord.Bits.Granularity) limit = (limit << 12) | 0xfff;
  78     return limit;
  79 }
  80 inline static void wine_ldt_set_flags( LDT_ENTRY *ent, unsigned char flags )
  81 {
  82     ent->HighWord.Bits.Dpl         = 3;
  83     ent->HighWord.Bits.Pres        = 1;
  84     ent->HighWord.Bits.Type        = flags;
  85     ent->HighWord.Bits.Sys         = 0;
  86     ent->HighWord.Bits.Reserved_0  = 0;
  87     ent->HighWord.Bits.Default_Big = (flags & WINE_LDT_FLAGS_32BIT) != 0;
  88 }
  89 inline static unsigned char wine_ldt_get_flags( const LDT_ENTRY *ent )
  90 {
  91     unsigned char ret = ent->HighWord.Bits.Type;
  92     if (ent->HighWord.Bits.Default_Big) ret |= WINE_LDT_FLAGS_32BIT;
  93     return ret;
  94 }
  95
  96 #endif  /* __WINE_WINE_LIBRARY_H */