dlls/ntdll/sysdeps.c

   1 /*
   2  * System-dependent scheduler support
   3  *
   4  * Copyright 1998 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 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <signal.h>
  25 #include <stdio.h>
  26 #ifdef HAVE_UNISTD_H
  27 # include <unistd.h>
  28 #endif
  29 #ifdef HAVE_SYS_TIME_H
  30 # include <sys/time.h>
  31 #endif
  32 #ifdef HAVE_SYS_SYSCALL_H
  33 # include <sys/syscall.h>
  34 #endif
  35 #ifdef HAVE_SYS_LWP_H
  36 # include <sys/lwp.h>
  37 #endif
  38 #ifdef HAVE_UCONTEXT_H
  39 # include <ucontext.h>
  40 #endif
  41 #ifdef HAVE_SYS_MMAN_H
  42 #include <sys/mman.h>
  43 #endif
  44 #ifdef HAVE_SCHED_H
  45 #include <sched.h>
  46 #endif
  47
  48 #include "ntstatus.h"
  49 #include "thread.h"
  50 #include "wine/pthread.h"
  51 #include "wine/server.h"
  52 #include "winbase.h"
  53 #include "wine/library.h"
  54 #include "wine/debug.h"
  55
  56 WINE_DEFAULT_DEBUG_CHANNEL(thread);
  57
  58
  59 /***********************************************************************
  60  *           SYSDEPS_SetCurThread
  61  *
  62  * Make 'thread' the current thread.
  63  */
  64 void SYSDEPS_SetCurThread( TEB *teb )
  65 {
  66 #if defined(__i386__)
  67     /* On the i386, the current thread is in the %fs register */
  68     LDT_ENTRY fs_entry;
  69
  70     wine_ldt_set_base( &fs_entry, teb );
  71     wine_ldt_set_limit( &fs_entry, 0xfff );
  72     wine_ldt_set_flags( &fs_entry, WINE_LDT_FLAGS_DATA|WINE_LDT_FLAGS_32BIT );
  73     wine_ldt_init_fs( teb->teb_sel, &fs_entry );
  74 #elif defined(__powerpc__)
  75     /* On PowerPC, the current TEB is in the gpr13 register */
  76 # ifdef __APPLE__
  77     __asm__ __volatile__("mr r13, %0" : : "r" (teb));
  78 # else
  79     __asm__ __volatile__("mr 2, %0" : : "r" (teb));
  80 # endif
  81 #elif defined(HAVE__LWP_CREATE)
  82     /* On non-i386 Solaris, we use the LWP private pointer */
  83     _lwp_setprivate( teb );
  84 #endif
  85     wine_pthread_init_thread();
  86 }
  87
  88
  89 /***********************************************************************
  90  *           SYSDEPS_AbortThread
  91  *
  92  * Same as SYSDEPS_ExitThread, but must not do anything that requires a server call.
  93  */
  94 void SYSDEPS_AbortThread( int status )
  95 {
  96     SIGNAL_Block();
  97     close( NtCurrentTeb()->wait_fd[0] );
  98     close( NtCurrentTeb()->wait_fd[1] );
  99     close( NtCurrentTeb()->reply_fd );
 100     close( NtCurrentTeb()->request_fd );
 101     wine_pthread_abort_thread( status );
 102 }
 103
 104 /***********************************************************************
 105  *           SYSDEPS_GetUnixTid
 106  *
 107  * Get the Unix tid of the current thread.
 108  */
 109 int SYSDEPS_GetUnixTid(void)
 110 {
 111 #ifdef HAVE__LWP_SELF
 112     return _lwp_self();
 113 #elif defined(__linux__) && defined(__i386__)
 114     int ret;
 115     __asm__("int $0x80" : "=a" (ret) : "0" (224) /* SYS_gettid */);
 116     if (ret < 0) ret = -1;
 117     return ret;
 118 #else
 119     return -1;
 120 #endif
 121 }
 122
 123 /**********************************************************************
 124  *           NtCurrentTeb   (NTDLL.@)
 125  *
 126  * This will crash and burn if called before threading is initialized
 127  */
 128 #if defined(__i386__) && defined(__GNUC__)
 129 __ASM_GLOBAL_FUNC( NtCurrentTeb, ".byte 0x64\n\tmovl 0x18,%eax\n\tret" );
 130 #elif defined(__i386__) && defined(_MSC_VER)
 131 /* Nothing needs to be done. MS C "magically" exports the inline version from winnt.h */
 132 #elif defined(HAVE__LWP_CREATE)
 133 /***********************************************************************
 134  *              NtCurrentTeb (NTDLL.@)
 135  */
 136 struct _TEB * WINAPI NtCurrentTeb(void)
 137 {
 138     extern void *_lwp_getprivate(void);
 139     return (struct _TEB *)_lwp_getprivate();
 140 }
 141 #elif defined(__powerpc__)
 142 # ifdef __APPLE__
 143 __ASM_GLOBAL_FUNC( NtCurrentTeb, "\n\tmr r3,r13\n\tblr" );
 144 # else
 145 __ASM_GLOBAL_FUNC( NtCurrentTeb, "\n\tmr 3,2\n\tblr" );
 146 # endif
 147 #else
 148 # error NtCurrentTeb not defined for this architecture
 149 #endif  /* __i386__ */