URL
https://opencores.org/ocsvn/openrisc/openrisc/trunk
Subversion Repositories openrisc
[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [ada/] [initialize.c] - Rev 714
Go to most recent revision | Compare with Previous | Blame | View Log
/**************************************************************************** * * * GNAT COMPILER COMPONENTS * * * * I N I T I A L I Z E * * * * C Implementation File * * * * Copyright (C) 1992-2011, Free Software Foundation, Inc. * * * * GNAT is free software; you can redistribute it and/or modify it under * * terms of the GNU General Public License as published by the Free Soft- * * ware Foundation; either version 3, or (at your option) any later ver- * * sion. GNAT is distributed in the hope that it will be useful, but WITH- * * OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * * or FITNESS FOR A PARTICULAR PURPOSE. * * * * As a special exception under Section 7 of GPL version 3, you are granted * * additional permissions described in the GCC Runtime Library Exception, * * version 3.1, as published by the Free Software Foundation. * * * * You should have received a copy of the GNU General Public License and * * a copy of the GCC Runtime Library Exception along with this program; * * see the files COPYING3 and COPYING.RUNTIME respectively. If not, see * * <http://www.gnu.org/licenses/>. * * * * GNAT was originally developed by the GNAT team at New York University. * * Extensive contributions were provided by Ada Core Technologies Inc. * * * ****************************************************************************/ /* This unit provides default implementation for __gnat_initialize () which is called before the elaboration of the partition. It is provided in a separate file/object so that users can replace it easily. The default implementation should be null on most targets. */ #ifdef __cplusplus extern "C" { #endif /* The following include is here to meet the published VxWorks requirement that the __vxworks header appear before any other include. */ #ifdef __vxworks #include "vxWorks.h" #endif #ifdef IN_RTS #include "tconfig.h" #include "tsystem.h" /* We don't have libiberty, so use malloc. */ #define xmalloc(S) malloc (S) #define xrealloc(V,S) realloc (V,S) #else #include "config.h" #include "system.h" #endif #include "raise.h" /******************************************/ /* __gnat_initialize (NT-mingw32 Version) */ /******************************************/ #if defined (__MINGW32__) #include "mingw32.h" #include <windows.h> extern void __gnat_init_float (void); extern void __gnat_install_SEH_handler (void *); extern int gnat_argc; extern char **gnat_argv; #ifdef GNAT_UNICODE_SUPPORT #define EXPAND_ARGV_RATE 128 static void append_arg (int *index, LPWSTR dir, LPWSTR value, char ***argv, int *last, int quoted) { int size; LPWSTR fullvalue; int vallen = _tcslen (value); int dirlen; if (dir == NULL) { /* no dir prefix */ dirlen = 0; fullvalue = xmalloc ((vallen + 1) * sizeof(TCHAR)); } else { /* Add dir first */ dirlen = _tcslen (dir); fullvalue = xmalloc ((dirlen + vallen + 1) * sizeof(TCHAR)); _tcscpy (fullvalue, dir); } /* Append value */ if (quoted) { _tcsncpy (fullvalue + dirlen, value + 1, vallen - 1); fullvalue [dirlen + vallen - sizeof(TCHAR)] = _T('\0'); } else _tcscpy (fullvalue + dirlen, value); if (*last <= *index) { *last += EXPAND_ARGV_RATE; *argv = (char **) xrealloc (*argv, (*last) * sizeof (char *)); } size = WS2SC (NULL, fullvalue, 0); (*argv)[*index] = (char *) xmalloc (size + sizeof(TCHAR)); WS2SC ((*argv)[*index], fullvalue, size); free (fullvalue); (*index)++; } #endif void __gnat_initialize (void *eh ATTRIBUTE_UNUSED) { /* Initialize floating-point coprocessor. This call is needed because the MS libraries default to 64-bit precision instead of 80-bit precision, and we require the full precision for proper operation, given that we have set Max_Digits etc with this in mind */ __gnat_init_float (); #ifdef GNAT_UNICODE_SUPPORT /* Set current code page for filenames handling. */ { char *codepage = getenv ("GNAT_CODE_PAGE"); /* Default code page is UTF-8. */ CurrentCodePage = CP_UTF8; if (codepage != NULL) { if (strcmp (codepage, "CP_ACP") == 0) CurrentCodePage = CP_ACP; else if (strcmp (codepage, "CP_UTF8") == 0) CurrentCodePage = CP_UTF8; } } /* Adjust gnat_argv to support Unicode characters. */ { LPWSTR *wargv; int wargc; int k; int last; int argc_expanded = 0; TCHAR result [MAX_PATH]; int quoted; wargv = CommandLineToArgvW (GetCommandLineW(), &wargc); if (wargv != NULL) { /* Set gnat_argv with arguments encoded in UTF-8. */ last = wargc + 1; gnat_argv = (char **) xmalloc ((last) * sizeof (char *)); /* argv[0] is the executable full path-name. */ SearchPath (NULL, wargv[0], _T(".exe"), MAX_PATH, result, NULL); append_arg (&argc_expanded, NULL, result, &gnat_argv, &last, 0); for (k=1; k<wargc; k++) { quoted = (wargv[k][0] == _T('\'')); /* Check for wildcard expansion if the argument is not quoted. */ if (!quoted && (_tcsstr (wargv[k], _T("?")) != 0 || _tcsstr (wargv[k], _T("*")) != 0)) { /* Wilcards are present, append all corresponding matches. */ WIN32_FIND_DATA FileData; HANDLE hDir = FindFirstFile (wargv[k], &FileData); LPWSTR dir = NULL; LPWSTR ldir = _tcsrchr (wargv[k], _T('\\')); if (ldir == NULL) ldir = _tcsrchr (wargv[k], _T('/')); if (hDir == INVALID_HANDLE_VALUE) { /* No match, append arg as-is. */ append_arg (&argc_expanded, NULL, wargv[k], &gnat_argv, &last, quoted); } else { if (ldir != NULL) { int n = ldir - wargv[k] + 1; dir = xmalloc ((n + 1) * sizeof (TCHAR)); _tcsncpy (dir, wargv[k], n); dir[n] = _T('\0'); } /* Append first match and all remaining ones. */ do { /* Do not add . and .. special entries */ if (_tcscmp (FileData.cFileName, _T(".")) != 0 && _tcscmp (FileData.cFileName, _T("..")) != 0) append_arg (&argc_expanded, dir, FileData.cFileName, &gnat_argv, &last, 0); } while (FindNextFile (hDir, &FileData)); FindClose (hDir); free (dir); } } else { /* No wildcard. Store parameter as-is. Remove quote if needed. */ append_arg (&argc_expanded, NULL, wargv[k], &gnat_argv, &last, quoted); } } LocalFree (wargv); gnat_argc = argc_expanded; gnat_argv = (char **) xrealloc (gnat_argv, argc_expanded * sizeof (char *)); } } #endif /* Note that we do not activate this for the compiler itself to avoid a bootstrap path problem. Older version of gnatbind will generate a call to __gnat_initialize() without argument. Therefore we cannot use eh in this case. It will be possible to remove the following #ifdef at some point. */ #ifdef IN_RTS /* Install the Structured Exception handler. */ if (eh) __gnat_install_SEH_handler (eh); #endif } /******************************************/ /* __gnat_initialize (init_float version) */ /******************************************/ #elif defined (__Lynx__) || defined (__FreeBSD__) || defined(__NetBSD__) \ || defined (__OpenBSD__) extern void __gnat_init_float (void); void __gnat_initialize (void *eh ATTRIBUTE_UNUSED) { __gnat_init_float (); } /***************************************/ /* __gnat_initialize (VxWorks Version) */ /***************************************/ #elif defined(__vxworks) extern void __gnat_init_float (void); void __gnat_initialize (void *eh) { __gnat_init_float (); /* On targets where we use the ZCX scheme, we need to register the frame tables at load/startup time. For applications loaded as a set of "modules", the crtstuff objects linked in (crtbegin.o/end.o) are tailored to provide this service automatically, a-la C++ constructor fashion, triggered by the VxWorks loader thanks to a special variable declaration in crtbegin.o (_ctors). Automatic de-registration is handled symmetrically, a-la C++ destructor fashion (with a _dtors variable also in crtbegin.o) triggered by the dynamic unloader. Note that since the tables shall be registered against a common data structure, libgcc should be one of the modules (vs being partially linked against all the others at build time) and shall be loaded first. For applications linked with the kernel, the scheme above would lead to duplicated symbols because the VxWorks kernel build "munches" by default, so we link against crtbeginT.o instead of crtbegin.o, which doesn't include the special variables. We know which set of crt objects is used thanks to a boolean indicator present in both sets (__module_has_ctors), and directly call the appropriate function here in the not-automatic case. We'll never unload that, so there is no de-registration to worry about. For whole applications loaded as a single module, we may use one scheme or the other, except for the mixed Ada/C++ case in which the first scheme would fail for the same reason as in the linked-with-kernel situation. The crt set selection is controlled by command line options via GCC's STARTFILE_SPEC in rs6000/vxworks.h. This is tightly synchronized with a number of other GCC configuration and crtstuff changes, and we need to ensure that those changes are there to activate this circuitry. */ #if (__GNUC__ >= 3) && (defined (_ARCH_PPC) || defined (__ppc)) { /* The scheme described above is only useful for the actual ZCX case, and we don't want any reference to the crt provided symbols otherwise. We may not link with any of the crt objects in the non-ZCX case, e.g. from documented procedures instructing the use of -nostdlib, and references to the ctors symbols here would just remain unsatisfied. We have no way to avoid those references in the right conditions in this C module, because we have nothing like a IN_ZCX_RTS macro. This aspect is then deferred to an Ada routine, which can do that based on a test against a constant System flag value. */ extern void __gnat_vxw_setup_for_eh (void); __gnat_vxw_setup_for_eh (); } #endif } #elif defined(_T_HPUX10) || (!defined(IN_RTS) && defined(_X_HPUX10)) /************************************************/ /* __gnat_initialize (PA-RISC HP-UX 10 Version) */ /************************************************/ extern void __main (void); void __gnat_initialize (void *eh ATTRIBUTE_UNUSED) { __main (); } #else /* For all other versions of GNAT, the initialize routine and handler installation do nothing */ /***************************************/ /* __gnat_initialize (Default Version) */ /***************************************/ void __gnat_initialize (void *eh ATTRIBUTE_UNUSED) { } #endif #ifdef __cplusplus } #endif
Go to most recent revision | Compare with Previous | Blame | View Log