* Makefile.def (target_modules): Add libssp.

[pf3gnuchains/gcc-fork.git] / gcc / libgcc2.c

diff --git a/gcc/libgcc2.c b/gcc/libgcc2.c
index a49c8c1..3108bff 100644 (file)
--- a/gcc/libgcc2.c
+++ b/gcc/libgcc2.c
@@ -2015,141 +2015,3 @@ func_ptr __DTOR_LIST__[2];
 #endif
 #endif /* no INIT_SECTION_ASM_OP and not CTOR_LISTS_DEFINED_EXTERNALLY */
 #endif /* L_ctors */
-\f
-#ifdef L_stack_chk
-#ifndef TARGET_LIBC_PROVIDES_SSP
-
-#ifndef inhibit_libc
-# include <string.h>
-# include <unistd.h>
-# include <fcntl.h>
-# ifdef HAVE_PATHS_H
-#  include <paths.h>
-# endif
-# ifndef _PATH_TTY
-#  define _PATH_TTY "/dev/tty"
-# endif
-# ifdef HAVE_SYSLOG_H
-#  include <syslog.h>
-# endif
-#endif
-
-void *__stack_chk_guard = 0;
-
-static void __attribute__ ((constructor))
-__guard_setup (void)
-{
-  unsigned char *p;
-
-  if (__stack_chk_guard != 0)
-    return;
-
-#ifndef inhibit_libc
-  {
-    int fd = open ("/dev/urandom", O_RDONLY);
-    if (fd != -1)
-      {
-       ssize_t size = read (fd, &__stack_chk_guard,
-                            sizeof (__stack_chk_guard));
-       close (fd);
-       if (size == sizeof(__stack_chk_guard))
-         return;
-      }
-  }
-#endif
-
-  /* If a random generator can't be used, the protector switches the guard
-     to the "terminator canary".  */
-  p = (unsigned char *)&__stack_chk_guard;
-  p[sizeof(__stack_chk_guard)-1] = 255;
-  p[sizeof(__stack_chk_guard)-2] = '\n';
-  p[0] = 0;
-}
-
-void
-__stack_chk_fail (void)
-{
-#ifndef inhibit_libc
-# ifdef __GNU_LIBRARY__
-  extern char * __progname;
-# else
-  static const char __progname[] = "";
-# endif
-
-  int fd;
-
-  /* Print error message directly to the tty.  This avoids Bad Things
-     happening if stderr is redirected.  */
-  fd = open (_PATH_TTY, O_WRONLY);
-  if (fd != -1)
-    {
-      static const char msg1[] = "*** stack smashing detected ***: ";
-      static const char msg2[] = " terminated\n";
-      size_t progname_len, len;
-      char *buf, *p;
-
-      progname_len = strlen (__progname);
-      len = sizeof(msg1)-1 + progname_len + sizeof(msg2)-1 + 1;
-      p = buf = alloca (len);
-
-      memcpy (p, msg1, sizeof(msg1)-1);
-      p += sizeof(msg1)-1;
-      memcpy (p, __progname, progname_len);
-      p += progname_len;
-      memcpy (p, msg2, sizeof(msg2));
-
-      while (len > 0)
-       {
-         ssize_t wrote = write (fd, buf, len);
-         if (wrote < 0)
-           break;
-         len -= wrote;
-       }
-      close (fd);
-    }
-
-# ifdef HAVE_SYSLOG_H
-  /* Only send the error to syslog if there was no tty available.  */
-  else
-    syslog (LOG_CRIT, "stack smashing detected: terminated");
-# endif /* HAVE_SYSLOG_H */
-#endif /* inhibit_libc */
-
-  /* Try very hard to exit.  Note that signals may be blocked preventing
-     the first two options from working.  The use of volatile is here to
-     prevent optimizers from "knowing" that __builtin_trap is called first,
-     and that it doesn't return, and so "obviously" the rest of the code
-     is dead.  */
-  {
-    volatile int state;
-    for (state = 0; ; state++)
-      switch (state)
-       {
-       case 0:
-         __builtin_trap ();
-         break;
-       case 1:
-         *(volatile int *)-1L = 0;
-         break;
-       case 2:
-         _exit (127);
-         break;
-       }
-  }
-}
-#endif /* TARGET_LIBC_PROVIDES_SSP */
-#endif /* L_stack_chk */
-\f
-#ifdef L_stack_chk_local
-#ifndef TARGET_LIBC_PROVIDES_SSP
-/* Some targets can avoid loading a GP for calls to hidden functions.
-   Using this entry point may avoid the load of a GP entirely for the
-   function, making the overall code smaller.  */
-
-void
-__stack_chk_fail_local (void)
-{
-  __stack_chk_fail ();
-}
-#endif /* TARGET_LIBC_PROVIDES_SSP */
-#endif /* L_stack_chk_local */