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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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 #ifdef __WINE_WINE_TEST_H
  31 #error This file should not be used in Wine tests
  32 #endif
  33
  34 /* configuration */
  35
  36 extern const char *wine_get_build_dir(void);
  37 extern const char *wine_get_config_dir(void);
  38 extern const char *wine_get_data_dir(void);
  39 extern const char *wine_get_server_dir(void);
  40 extern const char *wine_get_user_name(void);
  41 extern const char *wine_get_version(void);
  42 extern const char *wine_get_build_id(void);
  43 extern void wine_init_argv0_path( const char *argv0 );
  44 extern void wine_exec_wine_binary( const char *name, char **argv, const char *env_var );
  45
  46 /* dll loading */
  47
  48 typedef void (*load_dll_callback_t)( void *, const char * );
  49
  50 extern void *wine_dlopen( const char *filename, int flag, char *error, size_t errorsize );
  51 extern void *wine_dlsym( void *handle, const char *symbol, char *error, size_t errorsize );
  52 extern int wine_dlclose( void *handle, char *error, size_t errorsize );
  53 extern void wine_dll_set_callback( load_dll_callback_t load );
  54 extern void *wine_dll_load( const char *filename, char *error, int errorsize, int *file_exists );
  55 extern void *wine_dll_load_main_exe( const char *name, char *error, int errorsize,
  56                                      int test_only, int *file_exists );
  57 extern void wine_dll_unload( void *handle );
  58 extern const char *wine_dll_enum_load_path( unsigned int index );
  59 extern int wine_dll_get_owner( const char *name, char *buffer, int size, int *file_exists );
  60
  61 extern int __wine_main_argc;
  62 extern char **__wine_main_argv;
  63 extern WCHAR **__wine_main_wargv;
  64 extern char **__wine_main_environ;
  65 extern void __wine_dll_register( const IMAGE_NT_HEADERS *header, const char *filename );
  66 extern void wine_init( int argc, char *argv[], char *error, int error_size );
  67
  68 /* portability */
  69
  70 extern void DECLSPEC_NORETURN wine_switch_to_stack( void (*func)(void *), void *arg, void *stack );
  71 extern int wine_call_on_stack( int (*func)(void *), void *arg, void *stack );
  72 extern void wine_set_pe_load_area( void *base, size_t size );
  73 extern void wine_free_pe_load_area(void);
  74
  75 /* memory mappings */
  76
  77 extern void *wine_anon_mmap( void *start, size_t size, int prot, int flags );
  78 extern void wine_mmap_add_reserved_area( void *addr, size_t size );
  79 extern void wine_mmap_remove_reserved_area( void *addr, size_t size, int unmap );
  80 extern int wine_mmap_is_in_reserved_area( void *addr, size_t size );
  81 extern int wine_mmap_enum_reserved_areas( int (*enum_func)(void *base, size_t size, void *arg),
  82                                           void *arg, int top_down );
  83
  84 /* LDT management */
  85
  86 extern void wine_ldt_init_locking( void (*lock_func)(void), void (*unlock_func)(void) );
  87 extern void wine_ldt_get_entry( unsigned short sel, LDT_ENTRY *entry );
  88 extern int wine_ldt_set_entry( unsigned short sel, const LDT_ENTRY *entry );
  89 extern int wine_ldt_is_system( unsigned short sel );
  90 extern void *wine_ldt_get_ptr( unsigned short sel, unsigned long offset );
  91 extern unsigned short wine_ldt_alloc_entries( int count );
  92 extern unsigned short wine_ldt_realloc_entries( unsigned short sel, int oldcount, int newcount );
  93 extern void wine_ldt_free_entries( unsigned short sel, int count );
  94 #ifdef __i386__
  95 extern unsigned short wine_ldt_alloc_fs(void);
  96 extern void wine_ldt_init_fs( unsigned short sel, const LDT_ENTRY *entry );
  97 extern void wine_ldt_free_fs( unsigned short sel );
  98 #else  /* __i386__ */
  99 static inline unsigned short wine_ldt_alloc_fs(void) { return 0x0b; /* pseudo GDT selector */ }
 100 static inline void wine_ldt_init_fs( unsigned short sel, const LDT_ENTRY *entry ) { }
 101 static inline void wine_ldt_free_fs( unsigned short sel ) { }
 102 #endif  /* __i386__ */
 103
 104
 105 /* the local copy of the LDT */
 106 #ifdef __CYGWIN__
 107 # ifdef WINE_EXPORT_LDT_COPY
 108 #  define WINE_LDT_EXTERN __declspec(dllexport)
 109 # else
 110 #  define WINE_LDT_EXTERN __declspec(dllimport)
 111 # endif
 112 #else
 113 # define WINE_LDT_EXTERN extern
 114 #endif
 115
 116 WINE_LDT_EXTERN struct __wine_ldt_copy
 117 {
 118     void         *base[8192];  /* base address or 0 if entry is free   */
 119     unsigned long limit[8192]; /* limit in bytes or 0 if entry is free */
 120     unsigned char flags[8192]; /* flags (defined below) */
 121 } wine_ldt_copy;
 122
 123 #define WINE_LDT_FLAGS_DATA      0x13  /* Data segment */
 124 #define WINE_LDT_FLAGS_STACK     0x17  /* Stack segment */
 125 #define WINE_LDT_FLAGS_CODE      0x1b  /* Code segment */
 126 #define WINE_LDT_FLAGS_TYPE_MASK 0x1f  /* Mask for segment type */
 127 #define WINE_LDT_FLAGS_32BIT     0x40  /* Segment is 32-bit (code or stack) */
 128 #define WINE_LDT_FLAGS_ALLOCATED 0x80  /* Segment is allocated (no longer free) */
 129
 130 /* helper functions to manipulate the LDT_ENTRY structure */
 131 static inline void wine_ldt_set_base( LDT_ENTRY *ent, const void *base )
 132 {
 133     ent->BaseLow               = (WORD)(unsigned long)base;
 134     ent->HighWord.Bits.BaseMid = (BYTE)((unsigned long)base >> 16);
 135     ent->HighWord.Bits.BaseHi  = (BYTE)((unsigned long)base >> 24);
 136 }
 137 static inline void wine_ldt_set_limit( LDT_ENTRY *ent, unsigned int limit )
 138 {
 139     if ((ent->HighWord.Bits.Granularity = (limit >= 0x100000))) limit >>= 12;
 140     ent->LimitLow = (WORD)limit;
 141     ent->HighWord.Bits.LimitHi = (limit >> 16);
 142 }
 143 static inline void *wine_ldt_get_base( const LDT_ENTRY *ent )
 144 {
 145     return (void *)(ent->BaseLow |
 146                     (unsigned long)ent->HighWord.Bits.BaseMid << 16 |
 147                     (unsigned long)ent->HighWord.Bits.BaseHi << 24);
 148 }
 149 static inline unsigned int wine_ldt_get_limit( const LDT_ENTRY *ent )
 150 {
 151     unsigned int limit = ent->LimitLow | (ent->HighWord.Bits.LimitHi << 16);
 152     if (ent->HighWord.Bits.Granularity) limit = (limit << 12) | 0xfff;
 153     return limit;
 154 }
 155 static inline void wine_ldt_set_flags( LDT_ENTRY *ent, unsigned char flags )
 156 {
 157     ent->HighWord.Bits.Dpl         = 3;
 158     ent->HighWord.Bits.Pres        = 1;
 159     ent->HighWord.Bits.Type        = flags;
 160     ent->HighWord.Bits.Sys         = 0;
 161     ent->HighWord.Bits.Reserved_0  = 0;
 162     ent->HighWord.Bits.Default_Big = (flags & WINE_LDT_FLAGS_32BIT) != 0;
 163 }
 164 static inline unsigned char wine_ldt_get_flags( const LDT_ENTRY *ent )
 165 {
 166     unsigned char ret = ent->HighWord.Bits.Type;
 167     if (ent->HighWord.Bits.Default_Big) ret |= WINE_LDT_FLAGS_32BIT;
 168     return ret;
 169 }
 170 static inline int wine_ldt_is_empty( const LDT_ENTRY *ent )
 171 {
 172     const DWORD *dw = (const DWORD *)ent;
 173     return (dw[0] | dw[1]) == 0;
 174 }
 175
 176 /* segment register access */
 177
 178 #ifdef __i386__
 179 # ifdef __GNUC__
 180 #  define __DEFINE_GET_SEG(seg) \
 181     extern inline unsigned short wine_get_##seg(void); \
 182     extern inline unsigned short wine_get_##seg(void) \
 183     { unsigned short res; __asm__ __volatile__("movw %%" #seg ",%w0" : "=r"(res)); return res; }
 184 #  define __DEFINE_SET_SEG(seg) \
 185     extern inline void wine_set_##seg(int val); \
 186     extern inline void wine_set_##seg(int val) { __asm__("movw %w0,%%" #seg : : "r" (val)); }
 187 # elif defined(_MSC_VER)
 188 #  define __DEFINE_GET_SEG(seg) \
 189     extern inline unsigned short wine_get_##seg(void); \
 190     extern inline unsigned short wine_get_##seg(void) \
 191     { unsigned short res; __asm { mov res, seg } return res; }
 192 #  define __DEFINE_SET_SEG(seg) \
 193     extern inline void wine_set_##seg(unsigned short val); \
 194     extern inline void wine_set_##seg(unsigned short val) { __asm { mov seg, val } }
 195 # else  /* __GNUC__ || _MSC_VER */
 196 #  define __DEFINE_GET_SEG(seg) extern unsigned short wine_get_##seg(void);
 197 #  define __DEFINE_SET_SEG(seg) extern void wine_set_##seg(unsigned int);
 198 # endif /* __GNUC__ || _MSC_VER */
 199 #else  /* __i386__ */
 200 # define __DEFINE_GET_SEG(seg) static inline unsigned short wine_get_##seg(void) { return 0; }
 201 # define __DEFINE_SET_SEG(seg) static inline void wine_set_##seg(int val) { /* nothing */ }
 202 #endif  /* __i386__ */
 203
 204 __DEFINE_GET_SEG(cs)
 205 __DEFINE_GET_SEG(ds)
 206 __DEFINE_GET_SEG(es)
 207 __DEFINE_GET_SEG(fs)
 208 __DEFINE_GET_SEG(gs)
 209 __DEFINE_GET_SEG(ss)
 210 __DEFINE_SET_SEG(fs)
 211 __DEFINE_SET_SEG(gs)
 212 #undef __DEFINE_GET_SEG
 213 #undef __DEFINE_SET_SEG
 214
 215 #endif  /* __WINE_WINE_LIBRARY_H */