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

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* sysdeps/unix/sysv/linux/arm/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.

	* sysdeps/unix/sysv/linux/arm/eabi/nptl/unwind-forcedunwind.c:
	Likewise.
This commit is contained in:
Joseph Myers 2009-02-13 17:35:07 +00:00
parent b3862ba3c8
commit f281f9cfda
3 changed files with 46 additions and 7 deletions
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13
ChangeLog.arm
View File

@ -1,3 +1,14 @@
2009-02-13 Khem Raj <raj.khem@gmail.com>
* sysdeps/unix/sysv/linux/arm/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.
* sysdeps/unix/sysv/linux/arm/eabi/nptl/unwind-forcedunwind.c:
Likewise.
2009-02-05 Paul Brook <paul@codesourcery.com>
Joseph Myers <joseph@codesourcery.com>
@ -36,7 +47,7 @@
2009-01-27 Ryosei Takagi <ryosei@sm.sony.co.jp>
* sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.h
* sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.h
(lll_futex_wake_unlock, lll_futex_requeue): Return zero if success.
2009-01-27 Daniel Jacobowitz <dan@codesourcery.com>

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

@ -1,4 +1,4 @@
/* Copyright (C) 2003, 2005, 2007 Free Software Foundation, Inc.
/* Copyright (C) 2003, 2005, 2007, 2009 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>.
@ -22,6 +22,7 @@
#include <unwind.h>
#include <pthreadP.h>
static void *libgcc_s_handle;
static void (*libgcc_s_resume) (struct _Unwind_Exception *exc);
static _Unwind_Reason_Code (*libgcc_s_personality)
(_Unwind_State, struct _Unwind_Exception *, struct _Unwind_Context *);
@ -36,7 +37,7 @@ 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");
@ -60,11 +61,24 @@ 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);
}
}
/* It's vitally important that _Unwind_Resume not have a stack frame; the

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

@ -1,4 +1,4 @@
/* Copyright (C) 2003 Free Software Foundation, Inc.
/* Copyright (C) 2003, 2009 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>.
@ -22,6 +22,7 @@
#include <unwind.h>
#include <pthreadP.h>
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 *,
@ -40,7 +41,7 @@ pthread_cancel_init (void)
void *handle;
void *sjlj_register, *sjlj_unregister;
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");
@ -65,11 +66,24 @@ pthread_cancel_init (void)
libgcc_s_forcedunwind = forcedunwind;
libgcc_s_sjlj_register = sjlj_register;
libgcc_s_sjlj_unregister = sjlj_unregister;
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