gcc/ada/initialize.c

   1 /****************************************************************************
   2  *                                                                          *
   3  *                         GNAT COMPILER COMPONENTS                         *
   4  *                                                                          *
   5  *                           I N I T I A L I Z E                            *
   6  *                                                                          *
   7  *                          C Implementation File                           *
   8  *                                                                          *
   9  *          Copyright (C) 1992-2014, Free Software Foundation, Inc.         *
  10  *                                                                          *
  11  * GNAT is free software;  you can  redistribute it  and/or modify it under *
  12  * terms of the  GNU General Public License as published  by the Free Soft- *
  13  * ware  Foundation;  either version 3,  or (at your option) any later ver- *
  14  * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
  15  * OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY *
  16  * or FITNESS FOR A PARTICULAR PURPOSE.                                     *
  17  *                                                                          *
  18  * As a special exception under Section 7 of GPL version 3, you are granted *
  19  * additional permissions described in the GCC Runtime Library Exception,   *
  20  * version 3.1, as published by the Free Software Foundation.               *
  21  *                                                                          *
  22  * You should have received a copy of the GNU General Public License and    *
  23  * a copy of the GCC Runtime Library Exception along with this program;     *
  24  * see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    *
  25  * <http://www.gnu.org/licenses/>.                                          *
  26  *                                                                          *
  27  * GNAT was originally developed  by the GNAT team at  New York University. *
  28  * Extensive contributions were provided by Ada Core Technologies Inc.      *
  29  *                                                                          *
  30  ****************************************************************************/
  31
  32 /*  This unit provides default implementation for __gnat_initialize ()
  33     which is called before the elaboration of the partition. It is provided
  34     in a separate file/object so that users can replace it easily.
  35     The default implementation should be null on most targets.  */
  36
  37 /* The following include is here to meet the published VxWorks requirement
  38    that the __vxworks header appear before any other include.  */
  39 #ifdef __vxworks
  40 #include "vxWorks.h"
  41 #endif
  42
  43 #ifdef IN_RTS
  44 #include "tconfig.h"
  45 #include "tsystem.h"
  46 /* We don't have libiberty, so use malloc.  */
  47 #define xmalloc(S) malloc (S)
  48 #define xrealloc(V,S) realloc (V,S)
  49 #else
  50 #include "config.h"
  51 #include "system.h"
  52 #endif
  53
  54 #include "raise.h"
  55 #include <fcntl.h>
  56
  57 #ifdef __cplusplus
  58 extern "C" {
  59 #endif
  60
  61 /******************************************/
  62 /* __gnat_initialize (NT-mingw32 Version) */
  63 /******************************************/
  64
  65 int __gnat_wide_text_translation_required = 0;
  66 /* wide text translation, 0=none, 1=activated */
  67
  68 #if defined (__MINGW32__)
  69 #include "mingw32.h"
  70 #include <windows.h>
  71
  72 extern void __gnat_init_float (void);
  73 extern void __gnat_install_SEH_handler (void *);
  74
  75 extern int gnat_argc;
  76 extern char **gnat_argv;
  77
  78 #ifdef GNAT_UNICODE_SUPPORT
  79
  80 #define EXPAND_ARGV_RATE 128
  81
  82 static void
  83 append_arg (int *index, LPWSTR dir, LPWSTR value,
  84             char ***argv, int *last, int quoted)
  85 {
  86   int size;
  87   LPWSTR fullvalue;
  88   int vallen = _tcslen (value);
  89   int dirlen;
  90
  91   if (dir == NULL)
  92     {
  93       /* no dir prefix */
  94       dirlen = 0;
  95       fullvalue = (LPWSTR) xmalloc ((vallen + 1) * sizeof(TCHAR));
  96     }
  97   else
  98     {
  99       /* Add dir first */
 100       dirlen = _tcslen (dir);
 101
 102       fullvalue = (LPWSTR) xmalloc ((dirlen + vallen + 1) * sizeof(TCHAR));
 103       _tcscpy (fullvalue, dir);
 104     }
 105
 106   /* Append value */
 107
 108   if (quoted)
 109     {
 110       _tcsncpy (fullvalue + dirlen, value + 1, vallen - 1);
 111       fullvalue [dirlen + vallen - sizeof(TCHAR)] = _T('\0');
 112     }
 113   else
 114     _tcscpy (fullvalue + dirlen, value);
 115
 116   if (*last <= *index)
 117     {
 118       *last += EXPAND_ARGV_RATE;
 119       *argv = (char **) xrealloc (*argv, (*last) * sizeof (char *));
 120     }
 121
 122   size = WS2SC (NULL, fullvalue, 0);
 123   (*argv)[*index] = (char *) xmalloc (size + sizeof(TCHAR));
 124   WS2SC ((*argv)[*index], fullvalue, size);
 125
 126   free (fullvalue);
 127
 128   (*index)++;
 129 }
 130 #endif
 131
 132 void
 133 __gnat_initialize (void *eh ATTRIBUTE_UNUSED)
 134 {
 135    /* Initialize floating-point coprocessor. This call is needed because
 136       the MS libraries default to 64-bit precision instead of 80-bit
 137       precision, and we require the full precision for proper operation,
 138       given that we have set Max_Digits etc with this in mind */
 139    __gnat_init_float ();
 140
 141 #ifdef GNAT_UNICODE_SUPPORT
 142    /* Set current code page for filenames handling. */
 143    {
 144      char *codepage = getenv ("GNAT_CODE_PAGE");
 145
 146      /* Default code page is UTF-8.  */
 147      CurrentCodePage = CP_UTF8;
 148
 149      if (codepage != NULL)
 150        {
 151          if (strcmp (codepage, "CP_ACP") == 0)
 152            CurrentCodePage = CP_ACP;
 153          else if (strcmp (codepage, "CP_UTF8") == 0)
 154            CurrentCodePage = CP_UTF8;
 155        }
 156    }
 157
 158    /* Set current encoding for the IO.  */
 159    {
 160      char *ccsencoding = getenv ("GNAT_CCS_ENCODING");
 161
 162      /* Default CCS Encoding.  */
 163      CurrentCCSEncoding = _O_TEXT;
 164      __gnat_wide_text_translation_required = 0;
 165
 166      if (ccsencoding != NULL)
 167        {
 168          if (strcmp (ccsencoding, "U16TEXT") == 0)
 169            {
 170              CurrentCCSEncoding = _O_U16TEXT;
 171              __gnat_wide_text_translation_required = 1;
 172            }
 173          else if (strcmp (ccsencoding, "TEXT") == 0)
 174            {
 175              CurrentCCSEncoding = _O_TEXT;
 176              __gnat_wide_text_translation_required = 0;
 177            }
 178          else if (strcmp (ccsencoding, "WTEXT") == 0)
 179            {
 180              CurrentCCSEncoding = _O_WTEXT;
 181              __gnat_wide_text_translation_required = 1;
 182            }
 183          else if (strcmp (ccsencoding, "U8TEXT") == 0)
 184            {
 185              CurrentCCSEncoding = _O_U8TEXT;
 186              __gnat_wide_text_translation_required = 1;
 187            }
 188        }
 189    }
 190
 191    /* Adjust gnat_argv to support Unicode characters. */
 192    {
 193      LPWSTR *wargv;
 194      int wargc;
 195      int k;
 196      int last;
 197      int argc_expanded = 0;
 198      TCHAR result [MAX_PATH];
 199      int quoted;
 200
 201      wargv = CommandLineToArgvW (GetCommandLineW(), &wargc);
 202
 203      if (wargv != NULL)
 204        {
 205          /* Set gnat_argv with arguments encoded in UTF-8. */
 206          last = wargc + 1;
 207          gnat_argv = (char **) xmalloc ((last) * sizeof (char *));
 208
 209          /* argv[0] is the executable full path-name. */
 210
 211          SearchPath (NULL, wargv[0], _T(".exe"), MAX_PATH, result, NULL);
 212          append_arg (&argc_expanded, NULL, result, &gnat_argv, &last, 0);
 213
 214          for (k=1; k<wargc; k++)
 215            {
 216              quoted = (wargv[k][0] == _T('\''));
 217
 218              /* Check for wildcard expansion if the argument is not quoted. */
 219              if (!quoted
 220                  && (_tcsstr (wargv[k], _T("?")) != 0 ||
 221                      _tcsstr (wargv[k], _T("*")) != 0))
 222                {
 223                  /* Wilcards are present, append all corresponding matches. */
 224                  WIN32_FIND_DATA FileData;
 225                  HANDLE hDir = FindFirstFile (wargv[k], &FileData);
 226                  LPWSTR dir = NULL;
 227                  LPWSTR ldir = _tcsrchr (wargv[k], _T('\\'));
 228
 229                  if (ldir == NULL)
 230                    ldir = _tcsrchr (wargv[k], _T('/'));
 231
 232                  if (hDir == INVALID_HANDLE_VALUE)
 233                    {
 234                      /* No match, append arg as-is. */
 235                      append_arg (&argc_expanded, NULL, wargv[k],
 236                                  &gnat_argv, &last, quoted);
 237                    }
 238                  else
 239                    {
 240                      if (ldir != NULL)
 241                        {
 242                          int n = ldir - wargv[k] + 1;
 243                          dir = (LPWSTR) xmalloc ((n + 1) * sizeof (TCHAR));
 244                          _tcsncpy (dir, wargv[k], n);
 245                          dir[n] = _T('\0');
 246                        }
 247
 248                      /* Append first match and all remaining ones.  */
 249
 250                      do {
 251                        /* Do not add . and .. special entries */
 252
 253                        if (_tcscmp (FileData.cFileName, _T(".")) != 0
 254                            && _tcscmp (FileData.cFileName, _T("..")) != 0)
 255                          append_arg (&argc_expanded, dir, FileData.cFileName,
 256                                      &gnat_argv, &last, 0);
 257                      } while (FindNextFile (hDir, &FileData));
 258
 259                      FindClose (hDir);
 260
 261                      if (dir != NULL)
 262                        free (dir);
 263                    }
 264                }
 265              else
 266                {
 267                  /*  No wildcard. Store parameter as-is. Remove quote if
 268                      needed. */
 269                  append_arg (&argc_expanded, NULL, wargv[k],
 270                              &gnat_argv, &last, quoted);
 271                }
 272            }
 273
 274          LocalFree (wargv);
 275          gnat_argc = argc_expanded;
 276          gnat_argv = (char **) xrealloc
 277            (gnat_argv, argc_expanded * sizeof (char *));
 278        }
 279    }
 280 #endif
 281
 282    /* Note that we do not activate this for the compiler itself to avoid a
 283       bootstrap path problem.  Older version of gnatbind will generate a call
 284       to __gnat_initialize() without argument. Therefore we cannot use eh in
 285       this case.  It will be possible to remove the following #ifdef at some
 286       point.  */
 287 #ifdef IN_RTS
 288    /* Install the Structured Exception handler.  */
 289    if (eh)
 290      __gnat_install_SEH_handler (eh);
 291 #endif
 292 }
 293
 294 /******************************************/
 295 /* __gnat_initialize (init_float version) */
 296 /******************************************/
 297
 298 #elif defined (__Lynx__) || defined (__FreeBSD__) || defined(__NetBSD__) \
 299   || defined (__OpenBSD__)
 300
 301 extern void __gnat_init_float (void);
 302
 303 void
 304 __gnat_initialize (void *eh ATTRIBUTE_UNUSED)
 305 {
 306    __gnat_init_float ();
 307 }
 308
 309 /***************************************/
 310 /* __gnat_initialize (VxWorks Version) */
 311 /***************************************/
 312
 313 #elif defined(__vxworks)
 314
 315 extern void __gnat_init_float (void);
 316
 317 void
 318 __gnat_initialize (void *eh)
 319 {
 320   __gnat_init_float ();
 321 }
 322
 323 #elif defined(_T_HPUX10) || (!defined(IN_RTS) && defined(_X_HPUX10))
 324
 325 /************************************************/
 326 /* __gnat_initialize (PA-RISC HP-UX 10 Version) */
 327 /************************************************/
 328
 329 extern void __main (void);
 330
 331 void
 332 __gnat_initialize (void *eh ATTRIBUTE_UNUSED)
 333 {
 334   __main ();
 335 }
 336
 337 #else
 338
 339 /* For all other versions of GNAT, the initialize routine and handler
 340    installation do nothing */
 341
 342 /***************************************/
 343 /* __gnat_initialize (Default Version) */
 344 /***************************************/
 345
 346 void
 347 __gnat_initialize (void *eh ATTRIBUTE_UNUSED)
 348 {
 349 }
 350
 351 #endif
 352
 353 #ifdef __cplusplus
 354 }
 355 #endif