dlls/ntdll/unix/unix_private.h

   1 /*
   2  * Ntdll Unix private interface
   3  *
   4  * Copyright (C) 2020 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 __NTDLL_UNIX_PRIVATE_H
  22 #define __NTDLL_UNIX_PRIVATE_H
  23
  24 #include <pthread.h>
  25 #include <signal.h>
  26 #include "unixlib.h"
  27 #include "wine/list.h"
  28
  29 #ifdef __i386__
  30 static const enum cpu_type client_cpu = CPU_x86;
  31 #elif defined(__x86_64__)
  32 static const enum cpu_type client_cpu = CPU_x86_64;
  33 #elif defined(__arm__)
  34 static const enum cpu_type client_cpu = CPU_ARM;
  35 #elif defined(__aarch64__)
  36 static const enum cpu_type client_cpu = CPU_ARM64;
  37 #endif
  38
  39 struct debug_info
  40 {
  41     unsigned int str_pos;       /* current position in strings buffer */
  42     unsigned int out_pos;       /* current position in output buffer */
  43     char         strings[1024]; /* buffer for temporary strings */
  44     char         output[1024];  /* current output line */
  45 };
  46
  47 /* thread private data, stored in NtCurrentTeb()->GdiTebBatch */
  48 struct ntdll_thread_data
  49 {
  50     void              *cpu_data[16];  /* reserved for CPU-specific data */
  51     struct debug_info *debug_info;    /* info for debugstr functions */
  52     void              *start_stack;   /* stack for thread startup */
  53     int                request_fd;    /* fd for sending server requests */
  54     int                reply_fd;      /* fd for receiving server replies */
  55     int                wait_fd[2];    /* fd for sleeping server requests */
  56     pthread_t          pthread_id;    /* pthread thread id */
  57     struct list        entry;         /* entry in TEB list */
  58     PRTL_THREAD_START_ROUTINE start;  /* thread entry point */
  59     void              *param;         /* thread entry point parameter */
  60 };
  61
  62 C_ASSERT( sizeof(struct ntdll_thread_data) <= sizeof(((TEB *)0)->GdiTebBatch) );
  63
  64 static inline struct ntdll_thread_data *ntdll_get_thread_data(void)
  65 {
  66     return (struct ntdll_thread_data *)&NtCurrentTeb()->GdiTebBatch;
  67 }
  68
  69 static const SIZE_T page_size = 0x1000;
  70 static const SIZE_T signal_stack_mask = 0xffff;
  71 #ifdef _WIN64
  72 static const SIZE_T teb_size = 0x2000;
  73 static const SIZE_T teb_offset = 0;
  74 static const SIZE_T signal_stack_size = 0x10000 - 0x2000;
  75 #else
  76 static const SIZE_T teb_size = 0x3000;  /* TEB64 + TEB */
  77 static const SIZE_T teb_offset = 0x2000;
  78 static const SIZE_T signal_stack_size = 0x10000 - 0x3000;
  79 #endif
  80
  81 /* callbacks to PE ntdll from the Unix side */
  82 extern void     (WINAPI *pDbgUiRemoteBreakin)( void *arg ) DECLSPEC_HIDDEN;
  83 extern NTSTATUS (WINAPI *pKiRaiseUserExceptionDispatcher)(void) DECLSPEC_HIDDEN;
  84 extern void     (WINAPI *pKiUserApcDispatcher)(CONTEXT*,ULONG_PTR,ULONG_PTR,ULONG_PTR,PNTAPCFUNC) DECLSPEC_HIDDEN;
  85 extern NTSTATUS (WINAPI *pKiUserExceptionDispatcher)(EXCEPTION_RECORD*,CONTEXT*) DECLSPEC_HIDDEN;
  86 extern void     (WINAPI *pLdrInitializeThunk)(CONTEXT*,void**,ULONG_PTR,ULONG_PTR) DECLSPEC_HIDDEN;
  87 extern void     (WINAPI *pRtlUserThreadStart)( PRTL_THREAD_START_ROUTINE entry, void *arg ) DECLSPEC_HIDDEN;
  88 extern NTSTATUS CDECL fast_RtlpWaitForCriticalSection( RTL_CRITICAL_SECTION *crit, int timeout ) DECLSPEC_HIDDEN;
  89 extern NTSTATUS CDECL fast_RtlpUnWaitCriticalSection( RTL_CRITICAL_SECTION *crit ) DECLSPEC_HIDDEN;
  90 extern NTSTATUS CDECL fast_RtlDeleteCriticalSection( RTL_CRITICAL_SECTION *crit ) DECLSPEC_HIDDEN;
  91 extern NTSTATUS CDECL fast_RtlTryAcquireSRWLockExclusive( RTL_SRWLOCK *lock ) DECLSPEC_HIDDEN;
  92 extern NTSTATUS CDECL fast_RtlAcquireSRWLockExclusive( RTL_SRWLOCK *lock ) DECLSPEC_HIDDEN;
  93 extern NTSTATUS CDECL fast_RtlTryAcquireSRWLockShared( RTL_SRWLOCK *lock ) DECLSPEC_HIDDEN;
  94 extern NTSTATUS CDECL fast_RtlAcquireSRWLockShared( RTL_SRWLOCK *lock ) DECLSPEC_HIDDEN;
  95 extern NTSTATUS CDECL fast_RtlReleaseSRWLockExclusive( RTL_SRWLOCK *lock ) DECLSPEC_HIDDEN;
  96 extern NTSTATUS CDECL fast_RtlReleaseSRWLockShared( RTL_SRWLOCK *lock ) DECLSPEC_HIDDEN;
  97 extern NTSTATUS CDECL fast_RtlWakeConditionVariable( RTL_CONDITION_VARIABLE *variable, int count ) DECLSPEC_HIDDEN;
  98 extern LONGLONG CDECL fast_RtlGetSystemTimePrecise(void) DECLSPEC_HIDDEN;
  99 extern NTSTATUS CDECL fast_wait_cv( RTL_CONDITION_VARIABLE *variable, const void *value,
 100                                     const LARGE_INTEGER *timeout ) DECLSPEC_HIDDEN;
 101
 102 extern NTSTATUS CDECL get_dynamic_environment( WCHAR *env, SIZE_T *size ) DECLSPEC_HIDDEN;
 103 extern USHORT * CDECL get_unix_codepage_data(void) DECLSPEC_HIDDEN;
 104 extern void CDECL get_locales( WCHAR *sys, WCHAR *user ) DECLSPEC_HIDDEN;
 105 extern void CDECL virtual_release_address_space(void) DECLSPEC_HIDDEN;
 106
 107 extern NTSTATUS CDECL unwind_builtin_dll( ULONG type, struct _DISPATCHER_CONTEXT *dispatch,
 108                                           CONTEXT *context ) DECLSPEC_HIDDEN;
 109
 110 extern void CDECL set_show_dot_files( BOOL enable ) DECLSPEC_HIDDEN;
 111
 112 extern const char *home_dir DECLSPEC_HIDDEN;
 113 extern const char *data_dir DECLSPEC_HIDDEN;
 114 extern const char *build_dir DECLSPEC_HIDDEN;
 115 extern const char *config_dir DECLSPEC_HIDDEN;
 116 extern const char *user_name DECLSPEC_HIDDEN;
 117 extern const char **dll_paths DECLSPEC_HIDDEN;
 118 extern USHORT *uctable DECLSPEC_HIDDEN;
 119 extern USHORT *lctable DECLSPEC_HIDDEN;
 120 extern SIZE_T startup_info_size DECLSPEC_HIDDEN;
 121 extern int main_argc DECLSPEC_HIDDEN;
 122 extern char **main_argv DECLSPEC_HIDDEN;
 123 extern char **main_envp DECLSPEC_HIDDEN;
 124 extern WCHAR **main_wargv DECLSPEC_HIDDEN;
 125 extern unsigned int server_cpus DECLSPEC_HIDDEN;
 126 extern BOOL is_wow64 DECLSPEC_HIDDEN;
 127 extern BOOL process_exiting DECLSPEC_HIDDEN;
 128 extern HANDLE keyed_event DECLSPEC_HIDDEN;
 129 extern timeout_t server_start_time DECLSPEC_HIDDEN;
 130 extern sigset_t server_block_set DECLSPEC_HIDDEN;
 131 extern struct _KUSER_SHARED_DATA *user_shared_data DECLSPEC_HIDDEN;
 132 #ifdef __i386__
 133 extern struct ldt_copy __wine_ldt_copy DECLSPEC_HIDDEN;
 134 #endif
 135
 136 extern void init_environment( int argc, char *argv[], char *envp[] ) DECLSPEC_HIDDEN;
 137 extern void init_startup_info(void) DECLSPEC_HIDDEN;
 138 extern DWORD ntdll_umbstowcs( const char *src, DWORD srclen, WCHAR *dst, DWORD dstlen ) DECLSPEC_HIDDEN;
 139 extern int ntdll_wcstoumbs( const WCHAR *src, DWORD srclen, char *dst, DWORD dstlen, BOOL strict ) DECLSPEC_HIDDEN;
 140 extern char **build_envp( const WCHAR *envW ) DECLSPEC_HIDDEN;
 141 extern NTSTATUS exec_wineloader( char **argv, int socketfd, const pe_image_info_t *pe_info ) DECLSPEC_HIDDEN;
 142 extern void start_server( BOOL debug ) DECLSPEC_HIDDEN;
 143 extern ULONG_PTR get_image_address(void) DECLSPEC_HIDDEN;
 144
 145 extern unsigned int server_call_unlocked( void *req_ptr ) DECLSPEC_HIDDEN;
 146 extern void server_enter_uninterrupted_section( pthread_mutex_t *mutex, sigset_t *sigset ) DECLSPEC_HIDDEN;
 147 extern void server_leave_uninterrupted_section( pthread_mutex_t *mutex, sigset_t *sigset ) DECLSPEC_HIDDEN;
 148 extern unsigned int server_select( const select_op_t *select_op, data_size_t size, UINT flags,
 149                                    timeout_t abs_timeout, CONTEXT *context, pthread_mutex_t *mutex,
 150                                    user_apc_t *user_apc ) DECLSPEC_HIDDEN;
 151 extern unsigned int server_wait( const select_op_t *select_op, data_size_t size, UINT flags,
 152                                  const LARGE_INTEGER *timeout ) DECLSPEC_HIDDEN;
 153 extern unsigned int server_queue_process_apc( HANDLE process, const apc_call_t *call,
 154                                               apc_result_t *result ) DECLSPEC_HIDDEN;
 155 extern int server_get_unix_fd( HANDLE handle, unsigned int wanted_access, int *unix_fd,
 156                                int *needs_close, enum server_fd_type *type, unsigned int *options ) DECLSPEC_HIDDEN;
 157 extern size_t server_init_process(void) DECLSPEC_HIDDEN;
 158 extern void server_init_process_done(void) DECLSPEC_HIDDEN;
 159 extern void server_init_thread( void *entry_point, BOOL *suspend ) DECLSPEC_HIDDEN;
 160 extern int server_pipe( int fd[2] ) DECLSPEC_HIDDEN;
 161
 162 extern NTSTATUS context_to_server( context_t *to, const CONTEXT *from ) DECLSPEC_HIDDEN;
 163 extern NTSTATUS context_from_server( CONTEXT *to, const context_t *from ) DECLSPEC_HIDDEN;
 164 extern void DECLSPEC_NORETURN abort_thread( int status ) DECLSPEC_HIDDEN;
 165 extern void DECLSPEC_NORETURN abort_process( int status ) DECLSPEC_HIDDEN;
 166 extern void DECLSPEC_NORETURN exit_process( int status ) DECLSPEC_HIDDEN;
 167 extern void wait_suspend( CONTEXT *context ) DECLSPEC_HIDDEN;
 168 extern NTSTATUS send_debug_event( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance ) DECLSPEC_HIDDEN;
 169 extern NTSTATUS set_thread_context( HANDLE handle, const context_t *context, BOOL *self ) DECLSPEC_HIDDEN;
 170 extern NTSTATUS get_thread_context( HANDLE handle, context_t *context, unsigned int flags, BOOL *self ) DECLSPEC_HIDDEN;
 171 extern NTSTATUS alloc_object_attributes( const OBJECT_ATTRIBUTES *attr, struct object_attributes **ret,
 172                                          data_size_t *ret_len ) DECLSPEC_HIDDEN;
 173
 174 extern void *anon_mmap_fixed( void *start, size_t size, int prot, int flags ) DECLSPEC_HIDDEN;
 175 extern void *anon_mmap_alloc( size_t size, int prot ) DECLSPEC_HIDDEN;
 176 extern void virtual_init(void) DECLSPEC_HIDDEN;
 177 extern ULONG_PTR get_system_affinity_mask(void) DECLSPEC_HIDDEN;
 178 extern void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info ) DECLSPEC_HIDDEN;
 179 extern NTSTATUS virtual_create_builtin_view( void *module, const UNICODE_STRING *nt_name,
 180                                              pe_image_info_t *info ) DECLSPEC_HIDDEN;
 181 extern TEB *virtual_alloc_first_teb(void) DECLSPEC_HIDDEN;
 182 extern NTSTATUS virtual_alloc_teb( TEB **ret_teb ) DECLSPEC_HIDDEN;
 183 extern void virtual_free_teb( TEB *teb ) DECLSPEC_HIDDEN;
 184 extern NTSTATUS virtual_clear_tls_index( ULONG index ) DECLSPEC_HIDDEN;
 185 extern NTSTATUS virtual_alloc_thread_stack( INITIAL_TEB *stack, SIZE_T reserve_size, SIZE_T commit_size,
 186                                             SIZE_T *pthread_size ) DECLSPEC_HIDDEN;
 187 extern void virtual_map_user_shared_data(void) DECLSPEC_HIDDEN;
 188 extern NTSTATUS virtual_handle_fault( void *addr, DWORD err, void *stack ) DECLSPEC_HIDDEN;
 189 extern unsigned int virtual_locked_server_call( void *req_ptr ) DECLSPEC_HIDDEN;
 190 extern ssize_t virtual_locked_read( int fd, void *addr, size_t size ) DECLSPEC_HIDDEN;
 191 extern ssize_t virtual_locked_pread( int fd, void *addr, size_t size, off_t offset ) DECLSPEC_HIDDEN;
 192 extern BOOL virtual_is_valid_code_address( const void *addr, SIZE_T size ) DECLSPEC_HIDDEN;
 193 extern void *virtual_setup_exception( void *stack_ptr, size_t size, EXCEPTION_RECORD *rec ) DECLSPEC_HIDDEN;
 194 extern BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size ) DECLSPEC_HIDDEN;
 195 extern BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size ) DECLSPEC_HIDDEN;
 196 extern SIZE_T virtual_uninterrupted_read_memory( const void *addr, void *buffer, SIZE_T size ) DECLSPEC_HIDDEN;
 197 extern NTSTATUS virtual_uninterrupted_write_memory( void *addr, const void *buffer, SIZE_T size ) DECLSPEC_HIDDEN;
 198 extern void virtual_set_force_exec( BOOL enable ) DECLSPEC_HIDDEN;
 199 extern void virtual_set_large_address_space(void) DECLSPEC_HIDDEN;
 200 extern void virtual_fill_image_information( const pe_image_info_t *pe_info,
 201                                             SECTION_IMAGE_INFORMATION *info ) DECLSPEC_HIDDEN;
 202
 203 extern NTSTATUS get_thread_ldt_entry( HANDLE handle, void *data, ULONG len, ULONG *ret_len ) DECLSPEC_HIDDEN;
 204 extern BOOL get_thread_times( int unix_pid, int unix_tid, LARGE_INTEGER *kernel_time,
 205                               LARGE_INTEGER *user_time ) DECLSPEC_HIDDEN;
 206 extern void signal_init_threading(void) DECLSPEC_HIDDEN;
 207 extern NTSTATUS signal_alloc_thread( TEB *teb ) DECLSPEC_HIDDEN;
 208 extern void signal_free_thread( TEB *teb ) DECLSPEC_HIDDEN;
 209 extern void signal_init_thread( TEB *teb ) DECLSPEC_HIDDEN;
 210 extern void signal_init_process(void) DECLSPEC_HIDDEN;
 211 extern void DECLSPEC_NORETURN signal_start_thread( PRTL_THREAD_START_ROUTINE entry, void *arg,
 212                                                    BOOL suspend, void *thunk, TEB *teb ) DECLSPEC_HIDDEN;
 213 extern void DECLSPEC_NORETURN signal_exit_thread( int status, void (*func)(int) ) DECLSPEC_HIDDEN;
 214 extern void DECLSPEC_NORETURN exec_process( NTSTATUS status ) DECLSPEC_HIDDEN;
 215 extern void __wine_syscall_dispatcher(void) DECLSPEC_HIDDEN;
 216 extern void fill_vm_counters( VM_COUNTERS_EX *pvmi, int unix_pid ) DECLSPEC_HIDDEN;
 217
 218 extern NTSTATUS cdrom_DeviceIoControl( HANDLE device, HANDLE event, PIO_APC_ROUTINE apc, void *apc_user,
 219                                        IO_STATUS_BLOCK *io, ULONG code, void *in_buffer,
 220                                        ULONG in_size, void *out_buffer, ULONG out_size ) DECLSPEC_HIDDEN;
 221 extern NTSTATUS serial_DeviceIoControl( HANDLE device, HANDLE event, PIO_APC_ROUTINE apc, void *apc_user,
 222                                         IO_STATUS_BLOCK *io, ULONG code, void *in_buffer,
 223                                         ULONG in_size, void *out_buffer, ULONG out_size ) DECLSPEC_HIDDEN;
 224 extern NTSTATUS serial_FlushBuffersFile( int fd ) DECLSPEC_HIDDEN;
 225 extern NTSTATUS tape_DeviceIoControl( HANDLE device, HANDLE event, PIO_APC_ROUTINE apc, void *apc_user,
 226                                       IO_STATUS_BLOCK *io, ULONG code, void *in_buffer,
 227                                       ULONG in_size, void *out_buffer, ULONG out_size ) DECLSPEC_HIDDEN;
 228
 229 extern NTSTATUS errno_to_status( int err ) DECLSPEC_HIDDEN;
 230 extern NTSTATUS nt_to_unix_file_name( const UNICODE_STRING *nameW, char **unix_name_ret,
 231                                       UNICODE_STRING *nt_name, UINT disposition ) DECLSPEC_HIDDEN;
 232 extern NTSTATUS unix_to_nt_file_name( const char *name, WCHAR **nt ) DECLSPEC_HIDDEN;
 233 extern NTSTATUS open_unix_file( HANDLE *handle, const char *unix_name, ACCESS_MASK access,
 234                                 OBJECT_ATTRIBUTES *attr, ULONG attributes, ULONG sharing, ULONG disposition,
 235                                 ULONG options, void *ea_buffer, ULONG ea_length ) DECLSPEC_HIDDEN;
 236 extern void init_files(void) DECLSPEC_HIDDEN;
 237 extern void init_cpu_info(void) DECLSPEC_HIDDEN;
 238
 239 extern void dbg_init(void) DECLSPEC_HIDDEN;
 240
 241 extern void WINAPI DECLSPEC_NORETURN call_user_apc_dispatcher( CONTEXT *context_ptr, ULONG_PTR ctx,
 242                                                                ULONG_PTR arg1, ULONG_PTR arg2,
 243                                                                PNTAPCFUNC func,
 244                                                                void (WINAPI *dispatcher)(CONTEXT*,ULONG_PTR,ULONG_PTR,ULONG_PTR,PNTAPCFUNC) ) DECLSPEC_HIDDEN;
 245 extern void WINAPI DECLSPEC_NORETURN call_user_exception_dispatcher( EXCEPTION_RECORD *rec, CONTEXT *context,
 246                                                                      NTSTATUS (WINAPI *dispatcher)(EXCEPTION_RECORD*,CONTEXT*) ) DECLSPEC_HIDDEN;
 247 extern void WINAPI DECLSPEC_NORETURN call_raise_user_exception_dispatcher( NTSTATUS (WINAPI *dispatcher)(void) ) DECLSPEC_HIDDEN;
 248
 249 extern void *get_syscall_frame(void) DECLSPEC_HIDDEN;
 250 extern void set_syscall_frame(void *frame) DECLSPEC_HIDDEN;
 251
 252 #define TICKSPERSEC 10000000
 253 #define SECS_1601_TO_1970  ((369 * 365 + 89) * (ULONGLONG)86400)
 254
 255 static inline ULONGLONG ticks_from_time_t( time_t time )
 256 {
 257     if (sizeof(time_t) == sizeof(int))  /* time_t may be signed */
 258         return ((ULONGLONG)(ULONG)time + SECS_1601_TO_1970) * TICKSPERSEC;
 259     else
 260         return ((ULONGLONG)time + SECS_1601_TO_1970) * TICKSPERSEC;
 261 }
 262
 263 static inline const char *debugstr_us( const UNICODE_STRING *us )
 264 {
 265     if (!us) return "<null>";
 266     return debugstr_wn( us->Buffer, us->Length / sizeof(WCHAR) );
 267 }
 268
 269 /* convert from straight ASCII to Unicode without depending on the current codepage */
 270 static inline void ascii_to_unicode( WCHAR *dst, const char *src, size_t len )
 271 {
 272     while (len--) *dst++ = (unsigned char)*src++;
 273 }
 274
 275 static inline IMAGE_NT_HEADERS *get_exe_nt_header(void)
 276 {
 277     IMAGE_DOS_HEADER *module = (IMAGE_DOS_HEADER *)NtCurrentTeb()->Peb->ImageBaseAddress;
 278     return (IMAGE_NT_HEADERS *)((char *)module + module->e_lfanew);
 279 }
 280
 281 static inline void *get_signal_stack(void)
 282 {
 283     return (char *)NtCurrentTeb() + teb_size - teb_offset;
 284 }
 285
 286 static inline void mutex_lock( pthread_mutex_t *mutex )
 287 {
 288     if (!process_exiting) pthread_mutex_lock( mutex );
 289 }
 290
 291 static inline void mutex_unlock( pthread_mutex_t *mutex )
 292 {
 293     if (!process_exiting) pthread_mutex_unlock( mutex );
 294 }
 295
 296 #ifndef _WIN64
 297 static inline TEB64 *NtCurrentTeb64(void) { return (TEB64 *)NtCurrentTeb()->GdiBatchCount; }
 298 #endif
 299
 300 struct xcontext
 301 {
 302     CONTEXT c;
 303     CONTEXT_EX c_ex;
 304     ULONG64 host_compaction_mask;
 305 };
 306
 307 #if defined(__i386__) || defined(__x86_64__)
 308 static inline XSTATE *xstate_from_context( const CONTEXT *context )
 309 {
 310     CONTEXT_EX *xctx = (CONTEXT_EX *)(context + 1);
 311
 312     if ((context->ContextFlags & CONTEXT_XSTATE) != CONTEXT_XSTATE)
 313         return NULL;
 314
 315     return (XSTATE *)((char *)(context + 1) + xctx->XState.Offset);
 316 }
 317
 318 static inline void context_init_xstate( CONTEXT *context, void *xstate_buffer )
 319 {
 320     CONTEXT_EX *xctx;
 321
 322     xctx = (CONTEXT_EX *)(context + 1);
 323     xctx->Legacy.Length = sizeof(CONTEXT);
 324     xctx->Legacy.Offset = -(LONG)sizeof(CONTEXT);
 325
 326     xctx->XState.Length = sizeof(XSTATE);
 327     xctx->XState.Offset = (BYTE *)xstate_buffer - (BYTE *)xctx;
 328
 329     xctx->All.Length = sizeof(CONTEXT) + xctx->XState.Offset + xctx->XState.Length;
 330     xctx->All.Offset = -(LONG)sizeof(CONTEXT);
 331     context->ContextFlags |= 0x40;
 332 }
 333
 334 static inline void xstate_to_server( context_t *to, const XSTATE *xs )
 335 {
 336     if (!xs)
 337         return;
 338
 339     to->flags |= SERVER_CTX_YMM_REGISTERS;
 340     if (xs->Mask & 4)
 341         memcpy(&to->ymm.ymm_high_regs.ymm_high, &xs->YmmContext, sizeof(xs->YmmContext));
 342     else
 343         memset(&to->ymm.ymm_high_regs.ymm_high, 0, sizeof(xs->YmmContext));
 344 }
 345
 346 static inline void xstate_from_server_( XSTATE *xs, const context_t *from, BOOL compaction_enabled)
 347 {
 348     if (!xs)
 349         return;
 350
 351     xs->Mask = 0;
 352     xs->CompactionMask = compaction_enabled ? 0x8000000000000004 : 0;
 353
 354     if (from->flags & SERVER_CTX_YMM_REGISTERS)
 355     {
 356         unsigned long *src = (unsigned long *)&from->ymm.ymm_high_regs.ymm_high;
 357         unsigned int i;
 358
 359         for (i = 0; i < sizeof(xs->YmmContext) / sizeof(unsigned long); ++i)
 360             if (src[i])
 361             {
 362                 memcpy( &xs->YmmContext, &from->ymm.ymm_high_regs.ymm_high, sizeof(xs->YmmContext) );
 363                 xs->Mask = 4;
 364                 break;
 365             }
 366     }
 367 }
 368 #define xstate_from_server( xs, from ) xstate_from_server_( xs, from, user_shared_data->XState.CompactionEnabled )
 369
 370 #else
 371 static inline XSTATE *xstate_from_context( const CONTEXT *context )
 372 {
 373     return NULL;
 374 }
 375 static inline void context_init_xstate( CONTEXT *context, void *xstate_buffer )
 376 {
 377 }
 378 #endif
 379
 380 static inline size_t ntdll_wcslen( const WCHAR *str )
 381 {
 382     const WCHAR *s = str;
 383     while (*s) s++;
 384     return s - str;
 385 }
 386
 387 static inline WCHAR *ntdll_wcscpy( WCHAR *dst, const WCHAR *src )
 388 {
 389     WCHAR *p = dst;
 390     while ((*p++ = *src++));
 391     return dst;
 392 }
 393
 394 static inline WCHAR *ntdll_wcscat( WCHAR *dst, const WCHAR *src )
 395 {
 396     ntdll_wcscpy( dst + ntdll_wcslen(dst), src );
 397     return dst;
 398 }
 399
 400 static inline int ntdll_wcscmp( const WCHAR *str1, const WCHAR *str2 )
 401 {
 402     while (*str1 && (*str1 == *str2)) { str1++; str2++; }
 403     return *str1 - *str2;
 404 }
 405
 406 static inline int ntdll_wcsncmp( const WCHAR *str1, const WCHAR *str2, int n )
 407 {
 408     if (n <= 0) return 0;
 409     while ((--n > 0) && *str1 && (*str1 == *str2)) { str1++; str2++; }
 410     return *str1 - *str2;
 411 }
 412
 413 static inline WCHAR *ntdll_wcschr( const WCHAR *str, WCHAR ch )
 414 {
 415     do { if (*str == ch) return (WCHAR *)(ULONG_PTR)str; } while (*str++);
 416     return NULL;
 417 }
 418
 419 static inline WCHAR *ntdll_wcsrchr( const WCHAR *str, WCHAR ch )
 420 {
 421     WCHAR *ret = NULL;
 422     do { if (*str == ch) ret = (WCHAR *)(ULONG_PTR)str; } while (*str++);
 423     return ret;
 424 }
 425
 426 static inline WCHAR *ntdll_wcspbrk( const WCHAR *str, const WCHAR *accept )
 427 {
 428     for ( ; *str; str++) if (ntdll_wcschr( accept, *str )) return (WCHAR *)(ULONG_PTR)str;
 429     return NULL;
 430 }
 431
 432 static inline WCHAR ntdll_towupper( WCHAR ch )
 433 {
 434     return ch + uctable[uctable[uctable[ch >> 8] + ((ch >> 4) & 0x0f)] + (ch & 0x0f)];
 435 }
 436
 437 static inline WCHAR ntdll_towlower( WCHAR ch )
 438 {
 439     return ch + lctable[lctable[lctable[ch >> 8] + ((ch >> 4) & 0x0f)] + (ch & 0x0f)];
 440 }
 441
 442 static inline WCHAR *ntdll_wcsupr( WCHAR *str )
 443 {
 444     WCHAR *ret;
 445     for (ret = str; *str; str++) *str = ntdll_towupper(*str);
 446     return ret;
 447 }
 448
 449 static inline int ntdll_wcsicmp( const WCHAR *str1, const WCHAR *str2 )
 450 {
 451     int ret;
 452     for (;;)
 453     {
 454         if ((ret = ntdll_towupper( *str1 ) - ntdll_towupper( *str2 )) || !*str1) return ret;
 455         str1++;
 456         str2++;
 457     }
 458 }
 459
 460 static inline int ntdll_wcsnicmp( const WCHAR *str1, const WCHAR *str2, int n )
 461 {
 462     int ret;
 463     for (ret = 0; n > 0; n--, str1++, str2++)
 464         if ((ret = ntdll_towupper(*str1) - ntdll_towupper(*str2)) || !*str1) break;
 465     return ret;
 466 }
 467
 468 #define wcslen(str)        ntdll_wcslen(str)
 469 #define wcscpy(dst,src)    ntdll_wcscpy(dst,src)
 470 #define wcscat(dst,src)    ntdll_wcscat(dst,src)
 471 #define wcscmp(s1,s2)      ntdll_wcscmp(s1,s2)
 472 #define wcsncmp(s1,s2,n)   ntdll_wcsncmp(s1,s2,n)
 473 #define wcschr(str,ch)     ntdll_wcschr(str,ch)
 474 #define wcsrchr(str,ch)    ntdll_wcsrchr(str,ch)
 475 #define wcspbrk(str,ac)    ntdll_wcspbrk(str,ac)
 476 #define wcsicmp(s1, s2)    ntdll_wcsicmp(s1,s2)
 477 #define wcsnicmp(s1, s2,n) ntdll_wcsnicmp(s1,s2,n)
 478 #define wcsupr(str)        ntdll_wcsupr(str)
 479 #define towupper(c)        ntdll_towupper(c)
 480 #define towlower(c)        ntdll_towlower(c)
 481
 482 #endif /* __NTDLL_UNIX_PRIVATE_H */