gcc/ada/rtinit.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) 2014-2015, 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 implementation for __gnat_runtime_initialize ()
  33     which is called in adainit() to do special initialization needed by
  34     the GNAT runtime.  */
  35
  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_runtime_initialize (NT-mingw32 Version) */
  63 /**************************************************/
  64
  65 extern void __gnat_install_handler(void);
  66
  67 int __gnat_wide_text_translation_required = 0;
  68 /* wide text translation, 0=none, 1=activated */
  69
  70 int __gnat_rt_init_count = 0;
  71 /* number of references to the GNAT runtime, this is used to initialize
  72    and finalize properly the run-time. */
  73
  74 #if defined (__MINGW32__)
  75 #include "mingw32.h"
  76 #include <windows.h>
  77
  78 extern void __gnat_init_float (void);
  79
  80 extern int gnat_argc;
  81 extern char **gnat_argv;
  82 extern CRITICAL_SECTION ProcListCS;
  83 extern HANDLE ProcListEvt;
  84
  85 #ifdef GNAT_UNICODE_SUPPORT
  86
  87 #define EXPAND_ARGV_RATE 128
  88
  89 static void
  90 append_arg (int *index, LPWSTR dir, LPWSTR value,
  91             char ***argv, int *last, int quoted)
  92 {
  93   int size;
  94   LPWSTR fullvalue;
  95   int vallen = _tcslen (value);
  96   int dirlen;
  97
  98   if (dir == NULL)
  99     {
 100       /* no dir prefix */
 101       dirlen = 0;
 102       fullvalue = (LPWSTR) xmalloc ((vallen + 1) * sizeof(TCHAR));
 103     }
 104   else
 105     {
 106       /* Add dir first */
 107       dirlen = _tcslen (dir);
 108
 109       fullvalue = (LPWSTR) xmalloc ((dirlen + vallen + 1) * sizeof(TCHAR));
 110       _tcscpy (fullvalue, dir);
 111     }
 112
 113   /* Append value */
 114
 115   if (quoted)
 116     {
 117       _tcsncpy (fullvalue + dirlen, value + 1, vallen - 1);
 118       fullvalue [dirlen + vallen - sizeof(TCHAR)] = _T('\0');
 119     }
 120   else
 121     _tcscpy (fullvalue + dirlen, value);
 122
 123   if (*last <= *index)
 124     {
 125       *last += EXPAND_ARGV_RATE;
 126       *argv = (char **) xrealloc (*argv, (*last) * sizeof (char *));
 127     }
 128
 129   size = WS2SC (NULL, fullvalue, 0);
 130   (*argv)[*index] = (char *) xmalloc (size + sizeof(TCHAR));
 131   WS2SC ((*argv)[*index], fullvalue, size);
 132
 133   free (fullvalue);
 134
 135   (*index)++;
 136 }
 137 #endif
 138
 139 void
 140 __gnat_runtime_initialize(int install_handler)
 141 {
 142   /*  increment the reference counter */
 143
 144   __gnat_rt_init_count++;
 145
 146   /*  if already initialized return now */
 147   if (__gnat_rt_init_count > 1)
 148     return;
 149
 150    /* Initialize floating-point coprocessor. This call is needed because
 151       the MS libraries default to 64-bit precision instead of 80-bit
 152       precision, and we require the full precision for proper operation,
 153       given that we have set Max_Digits etc with this in mind */
 154
 155    __gnat_init_float ();
 156
 157    /* Initialize the critical section and event handle for the win32_wait()
 158       implementation, see adaint.c */
 159
 160    InitializeCriticalSection (&ProcListCS);
 161    ProcListEvt = CreateEvent (NULL, FALSE, FALSE, NULL);
 162
 163 #ifdef GNAT_UNICODE_SUPPORT
 164    /* Set current code page for filenames handling. */
 165    {
 166      char *codepage = getenv ("GNAT_CODE_PAGE");
 167
 168      /* Default code page is UTF-8.  */
 169      CurrentCodePage = CP_UTF8;
 170
 171      if (codepage != NULL)
 172        {
 173          if (strcmp (codepage, "CP_ACP") == 0)
 174            CurrentCodePage = CP_ACP;
 175          else if (strcmp (codepage, "CP_UTF8") == 0)
 176            CurrentCodePage = CP_UTF8;
 177        }
 178    }
 179
 180    /* Set current encoding for the IO.  */
 181    {
 182      char *ccsencoding = getenv ("GNAT_CCS_ENCODING");
 183
 184      /* Default CCS Encoding.  */
 185      CurrentCCSEncoding = _O_TEXT;
 186      __gnat_wide_text_translation_required = 0;
 187
 188      if (ccsencoding != NULL)
 189        {
 190          if (strcmp (ccsencoding, "U16TEXT") == 0)
 191            {
 192              CurrentCCSEncoding = _O_U16TEXT;
 193              __gnat_wide_text_translation_required = 1;
 194            }
 195          else if (strcmp (ccsencoding, "TEXT") == 0)
 196            {
 197              CurrentCCSEncoding = _O_TEXT;
 198              __gnat_wide_text_translation_required = 0;
 199            }
 200          else if (strcmp (ccsencoding, "WTEXT") == 0)
 201            {
 202              CurrentCCSEncoding = _O_WTEXT;
 203              __gnat_wide_text_translation_required = 1;
 204            }
 205          else if (strcmp (ccsencoding, "U8TEXT") == 0)
 206            {
 207              CurrentCCSEncoding = _O_U8TEXT;
 208              __gnat_wide_text_translation_required = 1;
 209            }
 210        }
 211    }
 212
 213    /* Adjust gnat_argv to support Unicode characters. */
 214    {
 215      LPWSTR *wargv;
 216      int wargc;
 217      int k;
 218      int last;
 219      int argc_expanded = 0;
 220      TCHAR result [MAX_PATH];
 221      int quoted;
 222
 223      wargv = CommandLineToArgvW (GetCommandLineW(), &wargc);
 224
 225      if (wargv != NULL)
 226        {
 227          /* Set gnat_argv with arguments encoded in UTF-8. */
 228          last = wargc + 1;
 229          gnat_argv = (char **) xmalloc ((last) * sizeof (char *));
 230
 231          /* argv[0] is the executable full path-name. */
 232
 233          SearchPath (NULL, wargv[0], _T(".exe"), MAX_PATH, result, NULL);
 234          append_arg (&argc_expanded, NULL, result, &gnat_argv, &last, 0);
 235
 236          for (k=1; k<wargc; k++)
 237            {
 238              quoted = (wargv[k][0] == _T('\''));
 239
 240              /* Check for wildcard expansion if the argument is not quoted. */
 241              if (!quoted
 242                  && (_tcsstr (wargv[k], _T("?")) != 0 ||
 243                      _tcsstr (wargv[k], _T("*")) != 0))
 244                {
 245                  /* Wilcards are present, append all corresponding matches. */
 246                  WIN32_FIND_DATA FileData;
 247                  HANDLE hDir = FindFirstFile (wargv[k], &FileData);
 248                  LPWSTR dir = NULL;
 249                  LPWSTR ldir = _tcsrchr (wargv[k], _T('\\'));
 250
 251                  if (ldir == NULL)
 252                    ldir = _tcsrchr (wargv[k], _T('/'));
 253
 254                  if (hDir == INVALID_HANDLE_VALUE)
 255                    {
 256                      /* No match, append arg as-is. */
 257                      append_arg (&argc_expanded, NULL, wargv[k],
 258                                  &gnat_argv, &last, quoted);
 259                    }
 260                  else
 261                    {
 262                      if (ldir != NULL)
 263                        {
 264                          int n = ldir - wargv[k] + 1;
 265                          dir = (LPWSTR) xmalloc ((n + 1) * sizeof (TCHAR));
 266                          _tcsncpy (dir, wargv[k], n);
 267                          dir[n] = _T('\0');
 268                        }
 269
 270                      /* Append first match and all remaining ones.  */
 271
 272                      do {
 273                        /* Do not add . and .. special entries */
 274
 275                        if (_tcscmp (FileData.cFileName, _T(".")) != 0
 276                            && _tcscmp (FileData.cFileName, _T("..")) != 0)
 277                          append_arg (&argc_expanded, dir, FileData.cFileName,
 278                                      &gnat_argv, &last, 0);
 279                      } while (FindNextFile (hDir, &FileData));
 280
 281                      FindClose (hDir);
 282
 283                      if (dir != NULL)
 284                        free (dir);
 285                    }
 286                }
 287              else
 288                {
 289                  /*  No wildcard. Store parameter as-is. Remove quote if
 290                      needed. */
 291                  append_arg (&argc_expanded, NULL, wargv[k],
 292                              &gnat_argv, &last, quoted);
 293                }
 294            }
 295
 296          LocalFree (wargv);
 297          gnat_argc = argc_expanded;
 298          gnat_argv = (char **) xrealloc
 299            (gnat_argv, argc_expanded * sizeof (char *));
 300        }
 301    }
 302 #endif
 303
 304   if (install_handler)
 305     __gnat_install_handler();
 306 }
 307
 308 /**************************************************/
 309 /* __gnat_runtime_initialize (init_float version) */
 310 /**************************************************/
 311
 312 #elif defined (__Lynx__) || defined (__FreeBSD__) || defined(__NetBSD__) \
 313   || defined (__OpenBSD__)
 314
 315 extern void __gnat_init_float (void);
 316
 317 void
 318 __gnat_runtime_initialize(int install_handler)
 319 {
 320   /*  increment the reference counter */
 321
 322   __gnat_rt_init_count++;
 323
 324   /*  if already initialized return now */
 325   if (__gnat_rt_init_count > 1)
 326     return;
 327
 328    __gnat_init_float ();
 329
 330   if (install_handler)
 331     __gnat_install_handler();
 332 }
 333
 334 /***********************************************/
 335 /* __gnat_runtime_initialize (VxWorks Version) */
 336 /***********************************************/
 337
 338 #elif defined(__vxworks)
 339
 340 extern void __gnat_init_float (void);
 341
 342 void
 343 __gnat_runtime_initialize(int install_handler)
 344 {
 345   /*  increment the reference counter */
 346
 347   __gnat_rt_init_count++;
 348
 349   /*  if already initialized return now */
 350   if (__gnat_rt_init_count > 1)
 351     return;
 352
 353   __gnat_init_float ();
 354
 355   if (install_handler)
 356     __gnat_install_handler();
 357 }
 358
 359 #else
 360
 361 /***********************************************/
 362 /* __gnat_runtime_initialize (default version) */
 363 /***********************************************/
 364
 365 void
 366 __gnat_runtime_initialize(int install_handler)
 367 {
 368   /*  increment the reference counter */
 369
 370   __gnat_rt_init_count++;
 371
 372   /*  if already initialized return now */
 373   if (__gnat_rt_init_count > 1)
 374     return;
 375
 376   if (install_handler)
 377     __gnat_install_handler();
 378 }
 379
 380 #endif
 381
 382 #ifdef __cplusplus
 383 }
 384 #endif