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2009-02-13 Khem Raj <raj.khem@gmail.com>

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* sysdeps/unix/sysv/linux/hppa/nptl/unwind-forcedunwind.c
	(libgcc_s_handle): New variable.
	(pthread_cancel_init): Depend in libgcc_s_handle for decision to
	load DSO.  Assign last.
	(__unwind_freeres): New function.
This commit is contained in:
Joseph Myers 2009-02-13 17:34:30 +00:00
parent ab4340a815
commit b3862ba3c8
2 changed files with 25 additions and 3 deletions
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8
ChangeLog.hppa
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@ -1,3 +1,11 @@
2009-02-13 Khem Raj <raj.khem@gmail.com>
* sysdeps/unix/sysv/linux/hppa/nptl/unwind-forcedunwind.c
(libgcc_s_handle): New variable.
(pthread_cancel_init): Depend in libgcc_s_handle for decision to
load DSO. Assign last.
(__unwind_freeres): New function.
2009-02-09 Arthur Loiret <aloiret@debian.org>
[BZ #9717]

20
sysdeps/unix/sysv/linux/hppa/nptl/unwind-forcedunwind.c
View File

@ -1,4 +1,4 @@
/* Copyright (C) 2005, 2006 Free Software Foundation, Inc.
/* Copyright (C) 2005, 2006, 2009 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
@ -23,6 +23,7 @@
#define LIBGCC_S_SO "libgcc_s.so.4"
static void *libgcc_s_handle;
static void (*libgcc_s_resume) (struct _Unwind_Exception *exc);
static _Unwind_Reason_Code (*libgcc_s_personality)
(int, _Unwind_Action, _Unwind_Exception_Class, struct _Unwind_Exception *,
@ -42,7 +43,7 @@ pthread_cancel_init (void)
void *resume, *personality, *forcedunwind, *getcfa;
void *handle;
if (__builtin_expect (libgcc_s_getcfa != NULL, 1))
if (__builtin_expect (libgcc_s_handle != NULL, 1))
{
/* Force gcc to reload all values. */
asm volatile ("" ::: "memory");
@ -66,11 +67,24 @@ pthread_cancel_init (void)
libgcc_s_resume = resume;
libgcc_s_personality = personality;
libgcc_s_forcedunwind = forcedunwind;
libgcc_s_getcfa = getcfa;
/* Make sure libgcc_s_getcfa is written last. Otherwise,
pthread_cancel_init might return early even when the pointer the
caller is interested in is not initialized yet. */
atomic_write_barrier ();
libgcc_s_getcfa = getcfa;
libgcc_s_handle = handle;
}
void
__libc_freeres_fn_section
__unwind_freeres (void)
{
void *handle = libgcc_s_handle;
if (handle != NULL)
{
libgcc_s_handle = NULL;
__libc_dlclose (handle);
}
}
void