dlls/msvcrt/main.c

   1 /*
   2  * msvcrt.dll initialisation functions
   3  *
   4  * Copyright 2000 Jon Griffiths
   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 #include "msvcrt.h"
  21
  22 #include "wine/debug.h"
  23
  24 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  25
  26 /* Index to TLS */
  27 DWORD msvcrt_tls_index;
  28
  29 static inline BOOL msvcrt_init_tls(void);
  30 static inline BOOL msvcrt_free_tls(void);
  31 const char* msvcrt_get_reason(DWORD reason);
  32
  33 /*********************************************************************
  34  *                  Init
  35  */
  36 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
  37 {
  38   thread_data_t *tls;
  39
  40   TRACE("(%p, %s, %p) pid(%lx), tid(%lx), tls(%ld)\n",
  41         hinstDLL, msvcrt_get_reason(fdwReason), lpvReserved,
  42         GetCurrentProcessId(), GetCurrentThreadId(),
  43         (long)msvcrt_tls_index);
  44
  45   switch (fdwReason)
  46   {
  47   case DLL_PROCESS_ATTACH:
  48     if (!msvcrt_init_tls())
  49       return FALSE;
  50     msvcrt_init_mt_locks();
  51     msvcrt_init_io();
  52     msvcrt_init_console();
  53     msvcrt_init_args();
  54     MSVCRT_setlocale(0, "C");
  55     TRACE("finished process init\n");
  56     break;
  57   case DLL_THREAD_ATTACH:
  58     break;
  59   case DLL_PROCESS_DETACH:
  60     msvcrt_free_mt_locks();
  61     msvcrt_free_io();
  62     msvcrt_free_console();
  63     msvcrt_free_args();
  64     if (!msvcrt_free_tls())
  65       return FALSE;
  66     TRACE("finished process free\n");
  67     break;
  68   case DLL_THREAD_DETACH:
  69     /* Free TLS */
  70     tls = TlsGetValue(msvcrt_tls_index);
  71     HeapFree(GetProcessHeap(), 0, tls);
  72     TRACE("finished thread free\n");
  73     break;
  74   }
  75   return TRUE;
  76 }
  77
  78 static inline BOOL msvcrt_init_tls(void)
  79 {
  80   msvcrt_tls_index = TlsAlloc();
  81
  82   if (msvcrt_tls_index == TLS_OUT_OF_INDEXES)
  83   {
  84     ERR("TlsAlloc() failed!\n");
  85     return FALSE;
  86   }
  87   return TRUE;
  88 }
  89
  90 static inline BOOL msvcrt_free_tls(void)
  91 {
  92   if (!TlsFree(msvcrt_tls_index))
  93   {
  94     ERR("TlsFree() failed!\n");
  95     return FALSE;
  96   }
  97   return TRUE;
  98 }
  99
 100 const char* msvcrt_get_reason(DWORD reason)
 101 {
 102   switch (reason)
 103   {
 104   case DLL_PROCESS_ATTACH: return "DLL_PROCESS_ATTACH";
 105   case DLL_PROCESS_DETACH: return "DLL_PROCESS_DETACH";
 106   case DLL_THREAD_ATTACH:  return "DLL_THREAD_ATTACH";
 107   case DLL_THREAD_DETACH:  return "DLL_THREAD_DETACH";
 108   }
 109   return "UNKNOWN";
 110 }
 111
 112
 113 /*********************************************************************
 114  *              $I10_OUTPUT (MSVCRT.@)
 115  * Function not really understood but needed to make the DLL work
 116  */
 117 void MSVCRT_I10_OUTPUT(void)
 118 {
 119   /* FIXME: This is probably data, not a function */
 120   /* no it is a function. I10 is an Int of 10 bytes */
 121   /* also known as 80 bit flotaing point (long double */
 122   /* for some compilers, not MSVC) */
 123 }
 124
 125 /*********************************************************************
 126  *              _adjust_fdiv (MSVCRT.@)
 127  * Used by the MSVC compiler to work around the Pentium FDIV bug.
 128  */
 129 int MSVCRT__adjust_fdiv = 0;