* sysdeps/x86_64/elf/start.S: Include <sysdep.h>.

	(_start): Add cfi_startproc, cfi_undefined for rip and cfi_endproc.

diff --git a/ChangeLog b/ChangeLog
index 76a04fe..05c3bfe 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2012-03-16  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+       * sysdeps/x86_64/elf/start.S: Include <sysdep.h>.
+       (_start): Add cfi_startproc, cfi_undefined for rip and cfi_endproc.
+
 2012-03-16  Roland McGrath  <roland@hack.frob.com>
 
        * aclocal.m4 (LIBC_PRECONFIGURE): New macro.

diff --git a/sysdeps/x86_64/elf/start.S b/sysdeps/x86_64/elf/start.S
index 68d61e2..5e01d21 100644 (file)
--- a/sysdeps/x86_64/elf/start.S
+++ b/sysdeps/x86_64/elf/start.S
@@ -1,5 +1,5 @@
 /* Startup code compliant to the ELF x86-64 ABI.
-   Copyright (C) 2001, 2002, 2003, 2005 Free Software Foundation, Inc.
+   Copyright (C) 2001-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Andreas Jaeger <aj@suse.de>, 2001.
 
@@ -53,12 +53,16 @@
                                        NULL
 */
 
+#include <sysdep.h>
 #include "bp-sym.h"
 
        .text
        .globl _start
        .type _start,@function
 _start:
+       cfi_startproc
+       /* Clearing frame pointer is insufficient, use CFI.  */
+       cfi_undefined (rip)
        /* Clear the frame pointer.  The ABI suggests this be done, to mark
           the outermost frame obviously.  */
        xorl %ebp, %ebp
@@ -113,6 +117,7 @@ _start:
 #endif
 
        hlt                     /* Crash if somehow `exit' does return.  */
+       cfi_endproc
 
 /* Define a symbol for the first piece of initialized data.  */
        .data