Update.

2004-01-13  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/x86_64/dl-machine.h: Include <tls.h>.

	* elf/rtld.c (_dl_start_final): Initialze __libc_stack_end here.
	* sysdeps/generic/dl-sysdep.c: Define __libc_stack_end with
	rtld_hidden_def and move into .data.rel.ro section.
	* sysdeps/generic/ldsodefs.h: Declare __libc_stack_end with
	rtld_hidden_proto.
	* sysdeps/generic/libc-start.c: Only initialize __libc_stack_end here
	if !SHARED.

	* sysdeps/unix/sysv/linux/dl-execstack.c
	(_dl_make_stack_executable): Move common code in front.  Use
	__builtin_expect.

1 files changed, 8 insertions, 0 deletions

diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index 852cf51280..f511c5d36f 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -456,6 +456,14 @@ extern void **_dl_initial_error_catch_tsd (void) __attribute__ ((const))
 extern int _dl_make_stack_executable (void **stack_endp) internal_function;
 rtld_hidden_proto (_dl_make_stack_executable)
 
+/* Variable pointing to the end of the stack (or close to it).  This value
+   must be constant over the runtime of the application.  Some programs
+   might use the variable which results in copy relocations on some
+   platforms.  But this does not matter, ld.so can always use the local
+   copy.  */
+extern void *__libc_stack_end;
+rtld_hidden_proto (__libc_stack_end)
+
 /* Parameters passed to the dynamic linker.  */
 extern int _dl_argc attribute_hidden;
 extern char **_dl_argv;