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

This commit is contained in:
Ulrich Drepper 2002-10-11 18:56:32 +00:00
parent 5232c93914
commit bd97565d08
1 changed files with 7 additions and 2 deletions
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9
sysdeps/unix/sysv/linux/i386/profil-counter.h
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@ -1,5 +1,5 @@
/* Low-level statistical profiling support function. Linux/i386 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
@ -21,7 +21,12 @@
#include <sigcontextinfo.h>
static void
profil_counter (int signo, SIGCONTEXT scp)
profil_counter (int signo, const SIGCONTEXT scp)
{
profil_count ((void *) GET_PC (scp));
/* 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 ("");
}