include/wine/library.h

   1 /*
   2  * Definitions for the Wine library
   3  *
   4  * Copyright 2000 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #ifndef __WINE_WINE_LIBRARY_H
  22 #define __WINE_WINE_LIBRARY_H
  23
  24 #include <stdarg.h>
  25 #include <sys/types.h>
  26
  27 #include <windef.h>
  28 #include <winbase.h>
  29
  30 /* configuration */
  31
  32 extern const char *wine_get_config_dir(void);
  33 extern const char *wine_get_server_dir(void);
  34 extern const char *wine_get_user_name(void);
  35 extern void wine_init_argv0_path( const char *argv0 );
  36 extern void wine_exec_wine_binary( const char *name, char **argv, char **envp, int use_preloader );
  37
  38 /* dll loading */
  39
  40 typedef void (*load_dll_callback_t)( void *, const char * );
  41
  42 extern void *wine_dlopen( const char *filename, int flag, char *error, size_t errorsize );
  43 extern void *wine_dlsym( void *handle, const char *symbol, char *error, size_t errorsize );
  44 extern int wine_dlclose( void *handle, char *error, size_t errorsize );
  45 extern void wine_dll_set_callback( load_dll_callback_t load );
  46 extern void *wine_dll_load( const char *filename, char *error, int errorsize, int *file_exists );
  47 extern void *wine_dll_load_main_exe( const char *name, char *error, int errorsize,
  48                                      int test_only, int *file_exists );
  49 extern void wine_dll_unload( void *handle );
  50 extern int wine_dll_get_owner( const char *name, char *buffer, int size, int *file_exists );
  51
  52 extern int __wine_main_argc;
  53 extern char **__wine_main_argv;
  54 extern WCHAR **__wine_main_wargv;
  55 extern char **__wine_main_environ;
  56 extern void __wine_dll_register( const IMAGE_NT_HEADERS *header, const char *filename );
  57 extern void wine_init( int argc, char *argv[], char *error, int error_size );
  58
  59 /* portability */
  60
  61 extern void DECLSPEC_NORETURN wine_switch_to_stack( void (*func)(void *), void *arg, void *stack );
  62 extern void wine_set_pe_load_area( void *base, size_t size );
  63 extern void wine_free_pe_load_area(void);
  64
  65 /* memory mappings */
  66
  67 extern void *wine_anon_mmap( void *start, size_t size, int prot, int flags );
  68 extern void wine_mmap_add_reserved_area( void *addr, size_t size );
  69 extern void wine_mmap_remove_reserved_area( void *addr, size_t size, int unmap );
  70 extern int wine_mmap_is_in_reserved_area( void *addr, size_t size );
  71
  72 /* LDT management */
  73
  74 extern void wine_ldt_init_locking( void (*lock_func)(void), void (*unlock_func)(void) );
  75 extern void wine_ldt_get_entry( unsigned short sel, LDT_ENTRY *entry );
  76 extern int wine_ldt_set_entry( unsigned short sel, const LDT_ENTRY *entry );
  77 extern int wine_ldt_is_system( unsigned short sel );
  78 extern void *wine_ldt_get_ptr( unsigned short sel, unsigned long offset );
  79 extern unsigned short wine_ldt_alloc_entries( int count );
  80 extern unsigned short wine_ldt_realloc_entries( unsigned short sel, int oldcount, int newcount );
  81 extern void wine_ldt_free_entries( unsigned short sel, int count );
  82 #ifdef __i386__
  83 extern unsigned short wine_ldt_alloc_fs(void);
  84 extern void wine_ldt_init_fs( unsigned short sel, const LDT_ENTRY *entry );
  85 extern void wine_ldt_free_fs( unsigned short sel );
  86 #else  /* __i386__ */
  87 static inline unsigned short wine_ldt_alloc_fs(void) { return 0x0b; /* pseudo GDT selector */ }
  88 static inline void wine_ldt_init_fs( unsigned short sel, const LDT_ENTRY *entry ) { }
  89 static inline void wine_ldt_free_fs( unsigned short sel ) { }
  90 #endif  /* __i386__ */
  91
  92
  93 /* the local copy of the LDT */
  94 #ifdef __CYGWIN__
  95 # ifdef WINE_EXPORT_LDT_COPY
  96 #  define WINE_LDT_EXTERN __declspec(dllexport)
  97 # else
  98 #  define WINE_LDT_EXTERN __declspec(dllimport)
  99 # endif
 100 #else
 101 # define WINE_LDT_EXTERN extern
 102 #endif
 103
 104 WINE_LDT_EXTERN struct __wine_ldt_copy
 105 {
 106     void         *base[8192];  /* base address or 0 if entry is free   */
 107     unsigned long limit[8192]; /* limit in bytes or 0 if entry is free */
 108     unsigned char flags[8192]; /* flags (defined below) */
 109 } wine_ldt_copy;
 110
 111 #define WINE_LDT_FLAGS_DATA      0x13  /* Data segment */
 112 #define WINE_LDT_FLAGS_STACK     0x17  /* Stack segment */
 113 #define WINE_LDT_FLAGS_CODE      0x1b  /* Code segment */
 114 #define WINE_LDT_FLAGS_TYPE_MASK 0x1f  /* Mask for segment type */
 115 #define WINE_LDT_FLAGS_32BIT     0x40  /* Segment is 32-bit (code or stack) */
 116 #define WINE_LDT_FLAGS_ALLOCATED 0x80  /* Segment is allocated (no longer free) */
 117
 118 /* helper functions to manipulate the LDT_ENTRY structure */
 119 inline static void wine_ldt_set_base( LDT_ENTRY *ent, const void *base )
 120 {
 121     ent->BaseLow               = (WORD)(unsigned long)base;
 122     ent->HighWord.Bits.BaseMid = (BYTE)((unsigned long)base >> 16);
 123     ent->HighWord.Bits.BaseHi  = (BYTE)((unsigned long)base >> 24);
 124 }
 125 inline static void wine_ldt_set_limit( LDT_ENTRY *ent, unsigned int limit )
 126 {
 127     if ((ent->HighWord.Bits.Granularity = (limit >= 0x100000))) limit >>= 12;
 128     ent->LimitLow = (WORD)limit;
 129     ent->HighWord.Bits.LimitHi = (limit >> 16);
 130 }
 131 inline static void *wine_ldt_get_base( const LDT_ENTRY *ent )
 132 {
 133     return (void *)(ent->BaseLow |
 134                     (unsigned long)ent->HighWord.Bits.BaseMid << 16 |
 135                     (unsigned long)ent->HighWord.Bits.BaseHi << 24);
 136 }
 137 inline static unsigned int wine_ldt_get_limit( const LDT_ENTRY *ent )
 138 {
 139     unsigned int limit = ent->LimitLow | (ent->HighWord.Bits.LimitHi << 16);
 140     if (ent->HighWord.Bits.Granularity) limit = (limit << 12) | 0xfff;
 141     return limit;
 142 }
 143 inline static void wine_ldt_set_flags( LDT_ENTRY *ent, unsigned char flags )
 144 {
 145     ent->HighWord.Bits.Dpl         = 3;
 146     ent->HighWord.Bits.Pres        = 1;
 147     ent->HighWord.Bits.Type        = flags;
 148     ent->HighWord.Bits.Sys         = 0;
 149     ent->HighWord.Bits.Reserved_0  = 0;
 150     ent->HighWord.Bits.Default_Big = (flags & WINE_LDT_FLAGS_32BIT) != 0;
 151 }
 152 inline static unsigned char wine_ldt_get_flags( const LDT_ENTRY *ent )
 153 {
 154     unsigned char ret = ent->HighWord.Bits.Type;
 155     if (ent->HighWord.Bits.Default_Big) ret |= WINE_LDT_FLAGS_32BIT;
 156     return ret;
 157 }
 158 inline static int wine_ldt_is_empty( const LDT_ENTRY *ent )
 159 {
 160     const DWORD *dw = (const DWORD *)ent;
 161     return (dw[0] | dw[1]) == 0;
 162 }
 163
 164 /* segment register access */
 165
 166 #ifdef __i386__
 167 # ifdef __GNUC__
 168 #  define __DEFINE_GET_SEG(seg) \
 169     extern inline unsigned short wine_get_##seg(void); \
 170     extern inline unsigned short wine_get_##seg(void) \
 171     { unsigned short res; __asm__("movw %%" #seg ",%w0" : "=r"(res)); return res; }
 172 #  define __DEFINE_SET_SEG(seg) \
 173     extern inline void wine_set_##seg(int val); \
 174     extern inline void wine_set_##seg(int val) { __asm__("movw %w0,%%" #seg : : "r" (val)); }
 175 # elif defined(_MSC_VER)
 176 #  define __DEFINE_GET_SEG(seg) \
 177     extern inline unsigned short wine_get_##seg(void); \
 178     extern inline unsigned short wine_get_##seg(void) \
 179     { unsigned short res; __asm { mov res, seg } return res; }
 180 #  define __DEFINE_SET_SEG(seg) \
 181     extern inline void wine_set_##seg(unsigned short val); \
 182     extern inline void wine_set_##seg(unsigned short val) { __asm { mov seg, val } }
 183 # else  /* __GNUC__ || _MSC_VER */
 184 #  define __DEFINE_GET_SEG(seg) extern unsigned short wine_get_##seg(void);
 185 #  define __DEFINE_SET_SEG(seg) extern void wine_set_##seg(unsigned int);
 186 # endif /* __GNUC__ || _MSC_VER */
 187 #else  /* __i386__ */
 188 # define __DEFINE_GET_SEG(seg) inline static unsigned short wine_get_##seg(void) { return 0; }
 189 # define __DEFINE_SET_SEG(seg) inline static void wine_set_##seg(int val) { /* nothing */ }
 190 #endif  /* __i386__ */
 191
 192 __DEFINE_GET_SEG(cs)
 193 __DEFINE_GET_SEG(ds)
 194 __DEFINE_GET_SEG(es)
 195 __DEFINE_GET_SEG(fs)
 196 __DEFINE_GET_SEG(gs)
 197 __DEFINE_GET_SEG(ss)
 198 __DEFINE_SET_SEG(fs)
 199 __DEFINE_SET_SEG(gs)
 200 #undef __DEFINE_GET_SEG
 201 #undef __DEFINE_SET_SEG
 202
 203 #endif  /* __WINE_WINE_LIBRARY_H */