From: Ulrich Drepper <drepper@redhat.com>
Date: Mon, 14 Oct 2002 17:26:14 +0000 (+0000)
Subject: (profil_counter): Add hack to prevent the compiler from clobbering the signal
X-Git-Tag: upstream/2.30~10627^2~1558
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=75380e2be2f3dbbc8ba547d77ce22ad70994c202;p=external%2Fglibc.git

(profil_counter): Add hack to prevent the compiler from clobbering the signal
context.
---

diff --git a/sysdeps/unix/sysv/linux/arm/profil-counter.h b/sysdeps/unix/sysv/linux/arm/profil-counter.h
index 5d8be9d..7639883 100644
--- a/sysdeps/unix/sysv/linux/arm/profil-counter.h
+++ b/sysdeps/unix/sysv/linux/arm/profil-counter.h
@@ -1,5 +1,5 @@
 /* Low-level statistical profiling support function.  Linux/ARM version.
-   Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 1998, 2002 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -29,4 +29,9 @@ profil_counter (int signo, int _a2, int _a3, int _a4, union k_sigcontext sc)
   else
     pc = (void *) sc.v21.arm_pc;
   profil_count (pc);
+
+  /* This is a hack to prevent the compiler from implementing the
+     above function call as a sibcall.  The sibcall would overwrite
+     the signal context.  */
+  asm volatile ("");
 }