diff --git a/ChangeLog.arm b/ChangeLog.arm index fd520bcd9c..864fd57117 100644 --- a/ChangeLog.arm +++ b/ChangeLog.arm @@ -1,3 +1,14 @@ +2009-02-13 Khem Raj + + * 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 Joseph Myers @@ -36,7 +47,7 @@ 2009-01-27 Ryosei Takagi - * 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 diff --git a/sysdeps/unix/sysv/linux/arm/eabi/nptl/unwind-forcedunwind.c b/sysdeps/unix/sysv/linux/arm/eabi/nptl/unwind-forcedunwind.c index 71ab77c6fa..ed321a3964 100644 --- a/sysdeps/unix/sysv/linux/arm/eabi/nptl/unwind-forcedunwind.c +++ b/sysdeps/unix/sysv/linux/arm/eabi/nptl/unwind-forcedunwind.c @@ -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 . @@ -22,6 +22,7 @@ #include #include +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 diff --git a/sysdeps/unix/sysv/linux/arm/nptl/unwind-forcedunwind.c b/sysdeps/unix/sysv/linux/arm/nptl/unwind-forcedunwind.c index b281963568..e19facfb89 100644 --- a/sysdeps/unix/sysv/linux/arm/nptl/unwind-forcedunwind.c +++ b/sysdeps/unix/sysv/linux/arm/nptl/unwind-forcedunwind.c @@ -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 . @@ -22,6 +22,7 @@ #include #include +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