* 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.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@101531 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 85 insertions, 0 deletions

diff --git a/libssp/ssp/unistd.h b/libssp/ssp/unistd.h
new file mode 100644
index 00000000000..176369f78c9
--- /dev/null
+++ b/libssp/ssp/unistd.h
@@ -0,0 +1,85 @@
+/* Checking macros for unistd functions.
+   Copyright (C) 2005 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+In addition to the permissions in the GNU General Public License, the
+Free Software Foundation gives you unlimited permission to link the
+compiled version of this file into combinations with other programs,
+and to distribute those combinations without any restriction coming
+from the use of this file.  (The General Public License restrictions
+do apply in other respects; for example, they cover modification of
+the file, and distribution when not linked into a combine
+executable.)
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING.  If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA.  */
+
+/* As a special exception, if you link this library with files compiled with
+   GCC to produce an executable, this does not cause the resulting executable
+   to be covered by the GNU General Public License. This exception does not
+   however invalidate any other reasons why the executable file might be
+   covered by the GNU General Public License.  */
+
+#ifndef _SSP_UNISTD_H
+#define _SSP_UNISTD_H 1
+
+#include <ssp.h>
+#include_next <unistd.h>
+
+#if __SSP_FORTIFY_LEVEL > 0
+
+#undef read
+#undef readlink
+#undef getcwd
+
+extern ssize_t __SSP_REDIRECT (__read_alias, (int __fd, void *__buf,
+					      size_t __nbytes), read);
+
+extern inline __attribute__((__always_inline__)) ssize_t
+read (int __fd, void *__buf, size_t __nbytes)
+{
+  if (__ssp_bos0 (__buf) != (size_t) -1 && __nbytes > __ssp_bos0 (__buf))
+    __chk_fail ();
+  return __read_alias (__fd, __buf, __nbytes);
+}
+
+extern int __SSP_REDIRECT (__readlink_alias,
+			   (const char *__restrict__ __path,
+			    char *__restrict__ __buf, size_t __len),
+			   readlink);
+
+extern inline __attribute__((__always_inline__)) int
+readlink (const char *__restrict__ __path, char *__restrict__ __buf,
+	  size_t __len)
+{
+  if (__ssp_bos (__buf) != (size_t) -1 && __len > __ssp_bos (__buf))
+    __chk_fail ();
+  return __readlink_alias (__path, __buf, __len);
+}
+
+extern char *__SSP_REDIRECT (__getcwd_alias,
+			     (char *__buf, size_t __size), getcwd);
+
+extern inline __attribute__((__always_inline__)) char *
+getcwd (char *__buf, size_t __size)
+{
+  if (__ssp_bos (__buf) != (size_t) -1 && __size > __ssp_bos (__buf))
+    __chk_fail ();
+  return __getcwd_alias (__buf, __size);
+}
+
+#endif /* __SSP_FORTIFY_LEVEL > 0 */
+#endif /* _SSP_UNISTD_H */