crosstool-ng/patches/glibc/2_9/100-ssp-compat.patch

Original patch from: gentoo/src/patchsets/glibc/2.9/0010_all_glibc-2.7-ssp-compat.patch

-= BEGIN original header =-
Add backwards compat support for gcc-3.x ssp ... older ssp versions
used __guard and __stack_smash_handler symbols while gcc-4.1 and newer
uses __stack_chk_guard and __stack_chk_fail.

-= END original header =-

diff -durN glibc-2_9.orig/Versions.def glibc-2_9/Versions.def
--- glibc-2_9.orig/Versions.def	2008-08-01 19:13:40.000000000 +0200
+++ glibc-2_9/Versions.def	2009-02-02 22:00:33.000000000 +0100
@@ -113,6 +113,9 @@
   GLIBC_2.0
   GLIBC_2.1
   GLIBC_2.3
+%ifdef ENABLE_OLD_SSP_COMPAT
+  GLIBC_2.3.2
+%endif
   GLIBC_2.4
   GLIBC_PRIVATE
 }
diff -durN glibc-2_9.orig/config.h.in glibc-2_9/config.h.in
--- glibc-2_9.orig/config.h.in	2007-03-26 22:40:08.000000000 +0200
+++ glibc-2_9/config.h.in	2009-02-02 22:00:32.000000000 +0100
@@ -42,6 +42,9 @@
    assembler instructions per line.  Default is `;'  */
 #undef ASM_LINE_SEP
 
+/* Define if we want to enable support for old ssp symbols */
+#undef	ENABLE_OLD_SSP_COMPAT
+
 /* Define if not using ELF, but `.init' and `.fini' sections are available.  */
 #undef	HAVE_INITFINI
 
diff -durN glibc-2_9.orig/configure glibc-2_9/configure
--- glibc-2_9.orig/configure	2008-11-11 10:50:11.000000000 +0100
+++ glibc-2_9/configure	2009-02-02 22:00:32.000000000 +0100
@@ -1380,6 +1380,9 @@
   --enable-kernel=VERSION compile for compatibility with kernel not older than
                           VERSION
   --enable-all-warnings   enable all useful warnings gcc can issue
+  --disable-old-ssp-compat
+                          enable support for older ssp symbols
+                          [default=no]
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -6470,6 +6473,20 @@
 echo "${ECHO_T}$libc_cv_ssp" >&6; }
 
 
+# Check whether --enable-old-ssp-compat or --disable-old-ssp-compat was given.
+if test "${enable_old_ssp_compat+set}" = set; then
+  enableval="$enable_old_ssp_compat"
+  enable_old_ssp_compat=$enableval
+else
+  enable_old_ssp_compat=no
+fi;
+if test "x$enable_old_ssp_compat" = "xyes"; then
+  cat >>confdefs.h <<\_ACEOF
+#define ENABLE_OLD_SSP_COMPAT 1
+_ACEOF
+
+fi
+
 { echo "$as_me:$LINENO: checking for -fgnu89-inline" >&5
 echo $ECHO_N "checking for -fgnu89-inline... $ECHO_C" >&6; }
 if test "${libc_cv_gnu89_inline+set}" = set; then
diff -durN glibc-2_9.orig/configure.in glibc-2_9/configure.in
--- glibc-2_9.orig/configure.in	2008-11-11 10:50:11.000000000 +0100
+++ glibc-2_9/configure.in	2009-02-02 22:00:32.000000000 +0100
@@ -1647,6 +1647,15 @@
 rm -f conftest*])
 AC_SUBST(libc_cv_ssp)
 
+AC_ARG_ENABLE([old-ssp-compat],
+	      AC_HELP_STRING([--enable-old-ssp-compat],
+	                     [enable support for older ssp symbols @<:@default=no@:>@]),
+	      [enable_old_ssp_compat=$enableval],
+	      [enable_old_ssp_compat=no])
+if test "x$enable_old_ssp_compat" = "xyes"; then
+  AC_DEFINE(ENABLE_OLD_SSP_COMPAT)
+fi
+
 AC_CACHE_CHECK(for -fgnu89-inline, libc_cv_gnu89_inline, [dnl
 cat > conftest.c <<EOF
 int foo;
diff -durN glibc-2_9.orig/csu/Versions glibc-2_9/csu/Versions
--- glibc-2_9.orig/csu/Versions	2006-10-28 01:11:41.000000000 +0200
+++ glibc-2_9/csu/Versions	2009-02-02 22:00:32.000000000 +0100
@@ -17,6 +17,12 @@
     # New special glibc functions.
     gnu_get_libc_release; gnu_get_libc_version;
   }
+  GLIBC_2.3.2 {
+%ifdef ENABLE_OLD_SSP_COMPAT
+    # global objects and functions for the old propolice patch in gcc
+    __guard;
+%endif
+  }
   GLIBC_PRIVATE {
 %if HAVE___THREAD
     # This version is for the TLS symbol, GLIBC_2.0 is the old object symbol.
diff -durN glibc-2_9.orig/csu/libc-start.c glibc-2_9/csu/libc-start.c
--- glibc-2_9.orig/csu/libc-start.c	2007-08-21 00:27:50.000000000 +0200
+++ glibc-2_9/csu/libc-start.c	2009-02-02 22:00:32.000000000 +0100
@@ -37,6 +37,9 @@
 uintptr_t __stack_chk_guard attribute_relro;
 # endif
 #endif
+#ifdef ENABLE_OLD_SSP_COMPAT
+uintptr_t __guard attribute_relro;
+#endif
 
 #ifdef HAVE_PTR_NTHREADS
 /* We need atomic operations.  */
@@ -141,6 +144,9 @@
 
   /* Set up the stack checker's canary.  */
   uintptr_t stack_chk_guard = _dl_setup_stack_chk_guard ();
+#ifdef ENABLE_OLD_SSP_COMPAT
+  __guard = stack_chk_guard;
+#endif
 # ifdef THREAD_SET_STACK_GUARD
   THREAD_SET_STACK_GUARD (stack_chk_guard);
 # else
diff -durN glibc-2_9.orig/debug/Versions glibc-2_9/debug/Versions
--- glibc-2_9.orig/debug/Versions	2008-03-05 07:53:41.000000000 +0100
+++ glibc-2_9/debug/Versions	2009-02-02 22:00:32.000000000 +0100
@@ -10,6 +10,12 @@
     # These are to support some gcc features.
     __cyg_profile_func_enter; __cyg_profile_func_exit;
   }
+%ifdef ENABLE_OLD_SSP_COMPAT
+  GLIBC_2.3.2 {
+    # backwards ssp compat support; alias to __stack_chk_fail
+    __stack_smash_handler;
+  }
+%endif
   GLIBC_2.3.4 {
     __chk_fail;
     __memcpy_chk; __memmove_chk; __mempcpy_chk; __memset_chk; __stpcpy_chk;
diff -durN glibc-2_9.orig/debug/stack_chk_fail.c glibc-2_9/debug/stack_chk_fail.c
--- glibc-2_9.orig/debug/stack_chk_fail.c	2007-05-25 01:47:08.000000000 +0200
+++ glibc-2_9/debug/stack_chk_fail.c	2009-02-02 22:00:32.000000000 +0100
@@ -28,3 +28,7 @@
 {
   __fortify_fail ("stack smashing detected");
 }
+
+#ifdef ENABLE_OLD_SSP_COMPAT
+strong_alias (__stack_chk_fail, __stack_smash_handler)
+#endif
diff -durN glibc-2_9.orig/elf/Versions glibc-2_9/elf/Versions
--- glibc-2_9.orig/elf/Versions	2008-03-08 06:42:26.000000000 +0100
+++ glibc-2_9/elf/Versions	2009-02-02 22:00:33.000000000 +0100
@@ -43,6 +43,12 @@
     # runtime interface to TLS
     __tls_get_addr;
   }
+%ifdef ENABLE_OLD_SSP_COMPAT
+  GLIBC_2.3.2 {
+    # backwards ssp compat support
+    __guard;
+  }
+%endif
   GLIBC_2.4 {
     # stack canary
     __stack_chk_guard;
diff -durN glibc-2_9.orig/elf/rtld.c glibc-2_9/elf/rtld.c
--- glibc-2_9.orig/elf/rtld.c	2008-08-14 19:01:56.000000000 +0200
+++ glibc-2_9/elf/rtld.c	2009-02-02 22:00:32.000000000 +0100
@@ -89,6 +89,9 @@
    in thread local area.  */
 uintptr_t __stack_chk_guard attribute_relro;
 #endif
+#ifdef ENABLE_OLD_SSP_COMPAT
+uintptr_t __guard attribute_relro;
+#endif
 
 /* Only exported for architectures that don't store the pointer guard
    value in thread local area.  */
@@ -842,6 +845,9 @@
 {
   /* Set up the stack checker's canary.  */
   uintptr_t stack_chk_guard = _dl_setup_stack_chk_guard ();
+#ifdef ENABLE_OLD_SSP_COMPAT
+  __guard = stack_chk_guard;
+#endif
 #ifdef THREAD_SET_STACK_GUARD
   THREAD_SET_STACK_GUARD (stack_chk_guard);
 #else