Makefile.def (target_modules): Add libssp.

	* Makefile.def (target_modules): Add libssp.
	* configure.in (target_libraries): Add target-libssp.
	* configure: Rebuilt.
	* Makefile.in: Rebuilt.
gcc/
	* gcc.c (LINK_SSP_SPEC): Define.
	(link_ssp_spec): New variable.
	(LINK_COMMAND_SPEC): Add %(link_ssp).
	(static_specs): Add link_ssp_spec.
	* configure.ac (TARGET_LIBC_PROVIDES_SSP): New test.
	* configure: Rebuilt.
	* config.in: Rebuilt.

	* config/rs6000/linux.h (TARGET_THREAD_SSP_OFFSET): Define.
	* config/rs6000/linux64.h (TARGET_THREAD_SSP_OFFSET): Likewise.
	* config/i386/linux.h (TARGET_THREAD_SSP_OFFSET): Likewise.
	* config/i386/linux64.h (TARGET_THREAD_SSP_OFFSET): Likewise.
	* config/rs6000/rs6000.md (stack_protect_set, stack_protect_test):
	If TARGET_THREAD_SSP_OFFSET is defined, use -0x7010(13) resp.
	-0x7008(2) instead of reading __stack_chk_guard variable.
	* config/i386/i386.md (UNSPEC_SP_SET, UNSPEC_SP_TEST): Change
	number.
	(UNSPEC_SP_TLS_SET, UNSPEC_SP_TLS_TEST): New constants.
	(stack_protect_set, stack_protect_test): Use *_tls* patterns
	if TARGET_THREAD_SSP_OFFSET is defined.
	(stack_tls_protect_set_si, stack_tls_protect_set_di,
	stack_tls_protect_test_si, stack_tls_protect_test_di): New insns.

	Revert:
	2005-06-27  Richard Henderson  <rth@redhat.com>
	* libgcc-std.ver (GCC_4.1.0): New.
	* libgcc.h (__stack_chk_guard): Declare.
	(__stack_chk_fail, __stack_chk_fail_local): Declare.
	* libgcc2.c (L_stack_chk, L_stack_chk_local): New.
	* mklibgcc.in (lib2funcs): Add them.

From-SVN: r101531

1 files changed, 0 insertions, 138 deletions

diff --git a/gcc/libgcc2.c b/gcc/libgcc2.c
index a49c8c1..3108bff 100644
--- 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 */
-
-#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 */
-
-#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 */