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-rw-r--r--libgcc/ChangeLog14
-rw-r--r--libgcc/Makefile.in3
-rw-r--r--libgcc/config/gthr-lynx.h61
-rw-r--r--libgcc/config/gthr-posix.h879
-rw-r--r--libgcc/config/gthr-rtems.h157
-rw-r--r--libgcc/config/gthr-vxworks.h170
-rw-r--r--libgcc/config/i386/gthr-win32.c5
-rw-r--r--libgcc/config/i386/gthr-win32.h772
-rw-r--r--libgcc/config/mips/gthr-mipssde.h230
-rw-r--r--libgcc/config/pa/gthr-dce.h563
-rw-r--r--libgcc/config/rs6000/gthr-aix.h35
-rw-r--r--libgcc/config/s390/gthr-tpf.h229
-rw-r--r--libgcc/configure52
-rw-r--r--libgcc/configure.ac15
-rw-r--r--libgcc/gthr-single.h292
-rw-r--r--libgcc/gthr.h148
16 files changed, 3603 insertions, 22 deletions
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index c169190..1bbe29a 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,5 +1,19 @@
2011-11-02 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
+ * gthr-single.h, gthr.h: New files.
+ * config/gthr-lynx.h, config/gthr-posix.h., config/gthr-rtems.h,
+ config/gthr-vxworks.h, config/i386/gthr-win32.h,
+ config/mips/gthr-mipssde.h, config/pa/gthr-dce.h,
+ config/rs6000/gthr-aix.h, config/s390/gthr-tpf.h: New files.
+ * config/i386/gthr-win32.c: Include "gthr-win32.h".
+ * configure.ac (thread_header): New variable.
+ Set it depending on target_thread_file.
+ (gthr-default.h): Link from $thread_header.
+ * configure: Regenerate.
+ * Makefile.in (LIBGCC2_CFLAGS): Remove $(GTHREAD_FLAGS).
+
+2011-11-02 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
+
* configure.ac (tm_file_): New variable.
Determine from tm_file.
(tm_file, tm_defines): Substitute.
diff --git a/libgcc/Makefile.in b/libgcc/Makefile.in
index 2ea6ca6..8f0c02f 100644
--- a/libgcc/Makefile.in
+++ b/libgcc/Makefile.in
@@ -223,8 +223,7 @@ endif
#
LIBGCC2_DEBUG_CFLAGS = -g
LIBGCC2_CFLAGS = -O2 $(LIBGCC2_INCLUDES) $(GCC_CFLAGS) $(HOST_LIBGCC2_CFLAGS) \
- $(LIBGCC2_DEBUG_CFLAGS) $(GTHREAD_FLAGS) \
- -DIN_LIBGCC2 \
+ $(LIBGCC2_DEBUG_CFLAGS) -DIN_LIBGCC2 \
-fbuilding-libgcc -fno-stack-protector \
$(INHIBIT_LIBC_CFLAGS)
diff --git a/libgcc/config/gthr-lynx.h b/libgcc/config/gthr-lynx.h
new file mode 100644
index 0000000..c98c2e6
--- /dev/null
+++ b/libgcc/config/gthr-lynx.h
@@ -0,0 +1,61 @@
+/* Threads compatibility routines for libgcc2 and libobjc for
+ LynxOS. */
+/* Compile this one with gcc. */
+/* Copyright (C) 2004, 2008, 2009, 2011 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_GTHR_LYNX_H
+#define GCC_GTHR_LYNX_H
+
+#ifdef _MULTITHREADED
+
+/* Using the macro version of pthread_setspecific leads to a
+ compilation error. Instead we have two choices either kill all
+ macros in pthread.h with defining _POSIX_THREADS_CALLS or undefine
+ individual macros where we should fall back on the function
+ implementation. We choose the second approach. */
+
+#include <pthread.h>
+#undef pthread_setspecific
+
+/* When using static libc on LynxOS, we cannot define pthread_create
+ weak. If the multi-threaded application includes iostream.h,
+ gthr-posix.h is included and pthread_create will be defined weak.
+ If pthread_create is weak its defining module in libc is not
+ necessarily included in the link and the symbol is resolved to zero.
+ Therefore the first call to it will crash.
+
+ Since -mthreads is a multilib switch on LynxOS we know that at this
+ point we are compiling for multi-threaded. Omitting the weak
+ definitions at this point should have no effect. */
+
+#undef GTHREAD_USE_WEAK
+#define GTHREAD_USE_WEAK 0
+
+#include "config/gthr-posix.h"
+
+#else
+#include "gthr-single.h"
+#endif
+
+#endif /* GCC_GTHR_LYNX_H */
diff --git a/libgcc/config/gthr-posix.h b/libgcc/config/gthr-posix.h
new file mode 100644
index 0000000..46054f6
--- /dev/null
+++ b/libgcc/config/gthr-posix.h
@@ -0,0 +1,879 @@
+/* Threads compatibility routines for libgcc2 and libobjc. */
+/* Compile this one with gcc. */
+/* Copyright (C) 1997, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+ 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_GTHR_POSIX_H
+#define GCC_GTHR_POSIX_H
+
+/* POSIX threads specific definitions.
+ Easy, since the interface is just one-to-one mapping. */
+
+#define __GTHREADS 1
+#define __GTHREADS_CXX0X 1
+
+/* Some implementations of <pthread.h> require this to be defined. */
+#if !defined(_REENTRANT) && defined(__osf__)
+#define _REENTRANT 1
+#endif
+
+#include <pthread.h>
+
+#if ((defined(_LIBOBJC) || defined(_LIBOBJC_WEAK)) \
+ || !defined(_GTHREAD_USE_MUTEX_TIMEDLOCK))
+# include <unistd.h>
+# if defined(_POSIX_TIMEOUTS) && _POSIX_TIMEOUTS >= 0
+# define _GTHREAD_USE_MUTEX_TIMEDLOCK 1
+# else
+# define _GTHREAD_USE_MUTEX_TIMEDLOCK 0
+# endif
+#endif
+
+typedef pthread_t __gthread_t;
+typedef pthread_key_t __gthread_key_t;
+typedef pthread_once_t __gthread_once_t;
+typedef pthread_mutex_t __gthread_mutex_t;
+typedef pthread_mutex_t __gthread_recursive_mutex_t;
+typedef pthread_cond_t __gthread_cond_t;
+typedef struct timespec __gthread_time_t;
+
+/* POSIX like conditional variables are supported. Please look at comments
+ in gthr.h for details. */
+#define __GTHREAD_HAS_COND 1
+
+#define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
+#define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT
+#if defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER)
+#define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER
+#elif defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP)
+#define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
+#else
+#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
+#endif
+#define __GTHREAD_COND_INIT PTHREAD_COND_INITIALIZER
+#define __GTHREAD_TIME_INIT {0,0}
+
+#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
+# ifndef __gthrw_pragma
+# define __gthrw_pragma(pragma)
+# endif
+# define __gthrw2(name,name2,type) \
+ static __typeof(type) name __attribute__ ((__weakref__(#name2))); \
+ __gthrw_pragma(weak type)
+# define __gthrw_(name) __gthrw_ ## name
+#else
+# define __gthrw2(name,name2,type)
+# define __gthrw_(name) name
+#endif
+
+/* Typically, __gthrw_foo is a weak reference to symbol foo. */
+#define __gthrw(name) __gthrw2(__gthrw_ ## name,name,name)
+
+/* On Tru64, /usr/include/pthread.h uses #pragma extern_prefix "__" to
+ map a subset of the POSIX pthread API to mangled versions of their
+ names. */
+#if defined(__osf__) && defined(_PTHREAD_USE_MANGLED_NAMES_)
+#define __gthrw3(name) __gthrw2(__gthrw_ ## name, __ ## name, name)
+__gthrw3(pthread_once)
+__gthrw3(pthread_getspecific)
+__gthrw3(pthread_setspecific)
+
+__gthrw3(pthread_create)
+__gthrw3(pthread_join)
+__gthrw3(pthread_detach)
+__gthrw3(pthread_equal)
+__gthrw3(pthread_self)
+__gthrw3(pthread_cancel)
+__gthrw3(sched_yield)
+
+__gthrw3(pthread_mutex_lock)
+__gthrw3(pthread_mutex_trylock)
+#if _GTHREAD_USE_MUTEX_TIMEDLOCK
+__gthrw3(pthread_mutex_timedlock)
+#endif
+__gthrw3(pthread_mutex_unlock)
+__gthrw3(pthread_mutex_init)
+__gthrw3(pthread_mutex_destroy)
+
+__gthrw3(pthread_cond_broadcast)
+__gthrw3(pthread_cond_signal)
+__gthrw3(pthread_cond_wait)
+__gthrw3(pthread_cond_timedwait)
+__gthrw3(pthread_cond_destroy)
+#else
+__gthrw(pthread_once)
+__gthrw(pthread_getspecific)
+__gthrw(pthread_setspecific)
+
+__gthrw(pthread_create)
+__gthrw(pthread_join)
+__gthrw(pthread_equal)
+__gthrw(pthread_self)
+__gthrw(pthread_detach)
+#ifndef __BIONIC__
+__gthrw(pthread_cancel)
+#endif
+__gthrw(sched_yield)
+
+__gthrw(pthread_mutex_lock)
+__gthrw(pthread_mutex_trylock)
+#if _GTHREAD_USE_MUTEX_TIMEDLOCK
+__gthrw(pthread_mutex_timedlock)
+#endif
+__gthrw(pthread_mutex_unlock)
+__gthrw(pthread_mutex_init)
+__gthrw(pthread_mutex_destroy)
+
+__gthrw(pthread_cond_broadcast)
+__gthrw(pthread_cond_signal)
+__gthrw(pthread_cond_wait)
+__gthrw(pthread_cond_timedwait)
+__gthrw(pthread_cond_destroy)
+#endif
+
+__gthrw(pthread_key_create)
+__gthrw(pthread_key_delete)
+__gthrw(pthread_mutexattr_init)
+__gthrw(pthread_mutexattr_settype)
+__gthrw(pthread_mutexattr_destroy)
+
+
+#if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK)
+/* Objective-C. */
+#if defined(__osf__) && defined(_PTHREAD_USE_MANGLED_NAMES_)
+__gthrw3(pthread_cond_init)
+__gthrw3(pthread_exit)
+#else
+__gthrw(pthread_cond_init)
+__gthrw(pthread_exit)
+#endif /* __osf__ && _PTHREAD_USE_MANGLED_NAMES_ */
+#ifdef _POSIX_PRIORITY_SCHEDULING
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
+__gthrw(sched_get_priority_max)
+__gthrw(sched_get_priority_min)
+#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
+#endif /* _POSIX_PRIORITY_SCHEDULING */
+__gthrw(pthread_attr_destroy)
+__gthrw(pthread_attr_init)
+__gthrw(pthread_attr_setdetachstate)
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
+__gthrw(pthread_getschedparam)
+__gthrw(pthread_setschedparam)
+#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
+#endif /* _LIBOBJC || _LIBOBJC_WEAK */
+
+#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
+
+/* On Solaris 2.6 up to 9, the libc exposes a POSIX threads interface even if
+ -pthreads is not specified. The functions are dummies and most return an
+ error value. However pthread_once returns 0 without invoking the routine
+ it is passed so we cannot pretend that the interface is active if -pthreads
+ is not specified. On Solaris 2.5.1, the interface is not exposed at all so
+ we need to play the usual game with weak symbols. On Solaris 10 and up, a
+ working interface is always exposed. On FreeBSD 6 and later, libc also
+ exposes a dummy POSIX threads interface, similar to what Solaris 2.6 up
+ to 9 does. FreeBSD >= 700014 even provides a pthread_cancel stub in libc,
+ which means the alternate __gthread_active_p below cannot be used there. */
+
+#if defined(__FreeBSD__) || (defined(__sun) && defined(__svr4__))
+
+static volatile int __gthread_active = -1;
+
+static void
+__gthread_trigger (void)
+{
+ __gthread_active = 1;
+}
+
+static inline int
+__gthread_active_p (void)
+{
+ static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER;
+ static pthread_once_t __gthread_active_once = PTHREAD_ONCE_INIT;
+
+ /* Avoid reading __gthread_active twice on the main code path. */
+ int __gthread_active_latest_value = __gthread_active;
+
+ /* This test is not protected to avoid taking a lock on the main code
+ path so every update of __gthread_active in a threaded program must
+ be atomic with regard to the result of the test. */
+ if (__builtin_expect (__gthread_active_latest_value < 0, 0))
+ {
+ if (__gthrw_(pthread_once))
+ {
+ /* If this really is a threaded program, then we must ensure that
+ __gthread_active has been set to 1 before exiting this block. */
+ __gthrw_(pthread_mutex_lock) (&__gthread_active_mutex);
+ __gthrw_(pthread_once) (&__gthread_active_once, __gthread_trigger);
+ __gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex);
+ }
+
+ /* Make sure we'll never enter this block again. */
+ if (__gthread_active < 0)
+ __gthread_active = 0;
+
+ __gthread_active_latest_value = __gthread_active;
+ }
+
+ return __gthread_active_latest_value != 0;
+}
+
+#else /* neither FreeBSD nor Solaris */
+
+static inline int
+__gthread_active_p (void)
+{
+/* Android's C library does not provide pthread_cancel, check for
+ `pthread_create' instead. */
+#ifndef __BIONIC__
+ static void *const __gthread_active_ptr
+ = __extension__ (void *) &__gthrw_(pthread_cancel);
+#else
+ static void *const __gthread_active_ptr
+ = __extension__ (void *) &__gthrw_(pthread_create);
+#endif
+ return __gthread_active_ptr != 0;
+}
+
+#endif /* FreeBSD or Solaris */
+
+#else /* not SUPPORTS_WEAK */
+
+/* Similar to Solaris, HP-UX 11 for PA-RISC provides stubs for pthread
+ calls in shared flavors of the HP-UX C library. Most of the stubs
+ have no functionality. The details are described in the "libc cumulative
+ patch" for each subversion of HP-UX 11. There are two special interfaces
+ provided for checking whether an application is linked to a shared pthread
+ library or not. However, these interfaces aren't available in early
+ libpthread libraries. We also need a test that works for archive
+ libraries. We can't use pthread_once as some libc versions call the
+ init function. We also can't use pthread_create or pthread_attr_init
+ as these create a thread and thereby prevent changing the default stack
+ size. The function pthread_default_stacksize_np is available in both
+ the archive and shared versions of libpthread. It can be used to
+ determine the default pthread stack size. There is a stub in some
+ shared libc versions which returns a zero size if pthreads are not
+ active. We provide an equivalent stub to handle cases where libc
+ doesn't provide one. */
+
+#if defined(__hppa__) && defined(__hpux__)
+
+static volatile int __gthread_active = -1;
+
+static inline int
+__gthread_active_p (void)
+{
+ /* Avoid reading __gthread_active twice on the main code path. */
+ int __gthread_active_latest_value = __gthread_active;
+ size_t __s;
+
+ if (__builtin_expect (__gthread_active_latest_value < 0, 0))
+ {
+ pthread_default_stacksize_np (0, &__s);
+ __gthread_active = __s ? 1 : 0;
+ __gthread_active_latest_value = __gthread_active;
+ }
+
+ return __gthread_active_latest_value != 0;
+}
+
+#else /* not hppa-hpux */
+
+static inline int
+__gthread_active_p (void)
+{
+ return 1;
+}
+
+#endif /* hppa-hpux */
+
+#endif /* SUPPORTS_WEAK */
+
+#ifdef _LIBOBJC
+
+/* This is the config.h file in libobjc/ */
+#include <config.h>
+
+#ifdef HAVE_SCHED_H
+# include <sched.h>
+#endif
+
+/* Key structure for maintaining thread specific storage */
+static pthread_key_t _objc_thread_storage;
+static pthread_attr_t _objc_thread_attribs;
+
+/* Thread local storage for a single thread */
+static void *thread_local_storage = NULL;
+
+/* Backend initialization functions */
+
+/* Initialize the threads subsystem. */
+static inline int
+__gthread_objc_init_thread_system (void)
+{
+ if (__gthread_active_p ())
+ {
+ /* Initialize the thread storage key. */
+ if (__gthrw_(pthread_key_create) (&_objc_thread_storage, NULL) == 0)
+ {
+ /* The normal default detach state for threads is
+ * PTHREAD_CREATE_JOINABLE which causes threads to not die
+ * when you think they should. */
+ if (__gthrw_(pthread_attr_init) (&_objc_thread_attribs) == 0
+ && __gthrw_(pthread_attr_setdetachstate) (&_objc_thread_attribs,
+ PTHREAD_CREATE_DETACHED) == 0)
+ return 0;
+ }
+ }
+
+ return -1;
+}
+
+/* Close the threads subsystem. */
+static inline int
+__gthread_objc_close_thread_system (void)
+{
+ if (__gthread_active_p ()
+ && __gthrw_(pthread_key_delete) (_objc_thread_storage) == 0
+ && __gthrw_(pthread_attr_destroy) (&_objc_thread_attribs) == 0)
+ return 0;
+
+ return -1;
+}
+
+/* Backend thread functions */
+
+/* Create a new thread of execution. */
+static inline objc_thread_t
+__gthread_objc_thread_detach (void (*func)(void *), void *arg)
+{
+ objc_thread_t thread_id;
+ pthread_t new_thread_handle;
+
+ if (!__gthread_active_p ())
+ return NULL;
+
+ if (!(__gthrw_(pthread_create) (&new_thread_handle, &_objc_thread_attribs,
+ (void *) func, arg)))
+ thread_id = (objc_thread_t) new_thread_handle;
+ else
+ thread_id = NULL;
+
+ return thread_id;
+}
+
+/* Set the current thread's priority. */
+static inline int
+__gthread_objc_thread_set_priority (int priority)
+{
+ if (!__gthread_active_p ())
+ return -1;
+ else
+ {
+#ifdef _POSIX_PRIORITY_SCHEDULING
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
+ pthread_t thread_id = __gthrw_(pthread_self) ();
+ int policy;
+ struct sched_param params;
+ int priority_min, priority_max;
+
+ if (__gthrw_(pthread_getschedparam) (thread_id, &policy, &params) == 0)
+ {
+ if ((priority_max = __gthrw_(sched_get_priority_max) (policy)) == -1)
+ return -1;
+
+ if ((priority_min = __gthrw_(sched_get_priority_min) (policy)) == -1)
+ return -1;
+
+ if (priority > priority_max)
+ priority = priority_max;
+ else if (priority < priority_min)
+ priority = priority_min;
+ params.sched_priority = priority;
+
+ /*
+ * The solaris 7 and several other man pages incorrectly state that
+ * this should be a pointer to policy but pthread.h is universally
+ * at odds with this.
+ */
+ if (__gthrw_(pthread_setschedparam) (thread_id, policy, &params) == 0)
+ return 0;
+ }
+#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
+#endif /* _POSIX_PRIORITY_SCHEDULING */
+ return -1;
+ }
+}
+
+/* Return the current thread's priority. */
+static inline int
+__gthread_objc_thread_get_priority (void)
+{
+#ifdef _POSIX_PRIORITY_SCHEDULING
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
+ if (__gthread_active_p ())
+ {
+ int policy;
+ struct sched_param params;
+
+ if (__gthrw_(pthread_getschedparam) (__gthrw_(pthread_self) (), &policy, &params) == 0)
+ return params.sched_priority;
+ else
+ return -1;
+ }
+ else
+#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
+#endif /* _POSIX_PRIORITY_SCHEDULING */
+ return OBJC_THREAD_INTERACTIVE_PRIORITY;
+}
+
+/* Yield our process time to another thread. */
+static inline void
+__gthread_objc_thread_yield (void)
+{
+ if (__gthread_active_p ())
+ __gthrw_(sched_yield) ();
+}
+
+/* Terminate the current thread. */
+static inline int
+__gthread_objc_thread_exit (void)
+{
+ if (__gthread_active_p ())
+ /* exit the thread */
+ __gthrw_(pthread_exit) (&__objc_thread_exit_status);
+
+ /* Failed if we reached here */
+ return -1;
+}
+
+/* Returns an integer value which uniquely describes a thread. */
+static inline objc_thread_t
+__gthread_objc_thread_id (void)
+{
+ if (__gthread_active_p ())
+ return (objc_thread_t) __gthrw_(pthread_self) ();
+ else
+ return (objc_thread_t) 1;
+}
+
+/* Sets the thread's local storage pointer. */
+static inline int
+__gthread_objc_thread_set_data (void *value)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_setspecific) (_objc_thread_storage, value);
+ else
+ {
+ thread_local_storage = value;
+ return 0;
+ }
+}
+
+/* Returns the thread's local storage pointer. */
+static inline void *
+__gthread_objc_thread_get_data (void)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_getspecific) (_objc_thread_storage);
+ else
+ return thread_local_storage;
+}
+
+/* Backend mutex functions */
+
+/* Allocate a mutex. */
+static inline int
+__gthread_objc_mutex_allocate (objc_mutex_t mutex)
+{
+ if (__gthread_active_p ())
+ {
+ mutex->backend = objc_malloc (sizeof (pthread_mutex_t));
+
+ if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend, NULL))
+ {
+ objc_free (mutex->backend);
+ mutex->backend = NULL;
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+/* Deallocate a mutex. */
+static inline int
+__gthread_objc_mutex_deallocate (objc_mutex_t mutex)
+{
+ if (__gthread_active_p ())
+ {
+ int count;
+
+ /*
+ * Posix Threads specifically require that the thread be unlocked
+ * for __gthrw_(pthread_mutex_destroy) to work.
+ */
+
+ do
+ {
+ count = __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend);
+ if (count < 0)
+ return -1;
+ }
+ while (count);
+
+ if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend))
+ return -1;
+
+ objc_free (mutex->backend);
+ mutex->backend = NULL;
+ }
+ return 0;
+}
+
+/* Grab a lock on a mutex. */
+static inline int
+__gthread_objc_mutex_lock (objc_mutex_t mutex)
+{
+ if (__gthread_active_p ()
+ && __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend) != 0)
+ {
+ return -1;
+ }
+
+ return 0;
+}
+
+/* Try to grab a lock on a mutex. */
+static inline int
+__gthread_objc_mutex_trylock (objc_mutex_t mutex)
+{
+ if (__gthread_active_p ()
+ && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 0)
+ {
+ return -1;
+ }
+
+ return 0;
+}
+
+/* Unlock the mutex */
+static inline int
+__gthread_objc_mutex_unlock (objc_mutex_t mutex)
+{
+ if (__gthread_active_p ()
+ && __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend) != 0)
+ {
+ return -1;
+ }
+
+ return 0;
+}
+
+/* Backend condition mutex functions */
+
+/* Allocate a condition. */
+static inline int
+__gthread_objc_condition_allocate (objc_condition_t condition)
+{
+ if (__gthread_active_p ())
+ {
+ condition->backend = objc_malloc (sizeof (pthread_cond_t));
+
+ if (__gthrw_(pthread_cond_init) ((pthread_cond_t *) condition->backend, NULL))
+ {
+ objc_free (condition->backend);
+ condition->backend = NULL;
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+/* Deallocate a condition. */
+static inline int
+__gthread_objc_condition_deallocate (objc_condition_t condition)
+{
+ if (__gthread_active_p ())
+ {
+ if (__gthrw_(pthread_cond_destroy) ((pthread_cond_t *) condition->backend))
+ return -1;
+
+ objc_free (condition->backend);
+ condition->backend = NULL;
+ }
+ return 0;
+}
+
+/* Wait on the condition */
+static inline int
+__gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_cond_wait) ((pthread_cond_t *) condition->backend,
+ (pthread_mutex_t *) mutex->backend);
+ else
+ return 0;
+}
+
+/* Wake up all threads waiting on this condition. */
+static inline int
+__gthread_objc_condition_broadcast (objc_condition_t condition)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_cond_broadcast) ((pthread_cond_t *) condition->backend);
+ else
+ return 0;
+}
+
+/* Wake up one thread waiting on this condition. */
+static inline int
+__gthread_objc_condition_signal (objc_condition_t condition)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_cond_signal) ((pthread_cond_t *) condition->backend);
+ else
+ return 0;
+}
+
+#else /* _LIBOBJC */
+
+static inline int
+__gthread_create (__gthread_t *__threadid, void *(*__func) (void*),
+ void *__args)
+{
+ return __gthrw_(pthread_create) (__threadid, NULL, __func, __args);
+}
+
+static inline int
+__gthread_join (__gthread_t __threadid, void **__value_ptr)
+{
+ return __gthrw_(pthread_join) (__threadid, __value_ptr);
+}
+
+static inline int
+__gthread_detach (__gthread_t __threadid)
+{
+ return __gthrw_(pthread_detach) (__threadid);
+}
+
+static inline int
+__gthread_equal (__gthread_t __t1, __gthread_t __t2)
+{
+ return __gthrw_(pthread_equal) (__t1, __t2);
+}
+
+static inline __gthread_t
+__gthread_self (void)
+{
+ return __gthrw_(pthread_self) ();
+}
+
+static inline int
+__gthread_yield (void)
+{
+ return __gthrw_(sched_yield) ();
+}
+
+static inline int
+__gthread_once (__gthread_once_t *__once, void (*__func) (void))
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_once) (__once, __func);
+ else
+ return -1;
+}
+
+static inline int
+__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
+{
+ return __gthrw_(pthread_key_create) (__key, __dtor);
+}
+
+static inline int
+__gthread_key_delete (__gthread_key_t __key)
+{
+ return __gthrw_(pthread_key_delete) (__key);
+}
+
+static inline void *
+__gthread_getspecific (__gthread_key_t __key)
+{
+ return __gthrw_(pthread_getspecific) (__key);
+}
+
+static inline int
+__gthread_setspecific (__gthread_key_t __key, const void *__ptr)
+{
+ return __gthrw_(pthread_setspecific) (__key, __ptr);
+}
+
+static inline int
+__gthread_mutex_destroy (__gthread_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_mutex_destroy) (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_mutex_lock (__gthread_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_mutex_lock) (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_mutex_trylock) (__mutex);
+ else
+ return 0;
+}
+
+#if _GTHREAD_USE_MUTEX_TIMEDLOCK
+static inline int
+__gthread_mutex_timedlock (__gthread_mutex_t *__mutex,
+ const __gthread_time_t *__abs_timeout)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_mutex_timedlock) (__mutex, __abs_timeout);
+ else
+ return 0;
+}
+#endif
+
+static inline int
+__gthread_mutex_unlock (__gthread_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_mutex_unlock) (__mutex);
+ else
+ return 0;
+}
+
+#ifndef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
+static inline int
+__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ {
+ pthread_mutexattr_t __attr;
+ int __r;
+
+ __r = __gthrw_(pthread_mutexattr_init) (&__attr);
+ if (!__r)
+ __r = __gthrw_(pthread_mutexattr_settype) (&__attr,
+ PTHREAD_MUTEX_RECURSIVE);
+ if (!__r)
+ __r = __gthrw_(pthread_mutex_init) (__mutex, &__attr);
+ if (!__r)
+ __r = __gthrw_(pthread_mutexattr_destroy) (&__attr);
+ return __r;
+ }
+ return 0;
+}
+#endif
+
+static inline int
+__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
+{
+ return __gthread_mutex_lock (__mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
+{
+ return __gthread_mutex_trylock (__mutex);
+}
+
+#if _GTHREAD_USE_MUTEX_TIMEDLOCK
+static inline int
+__gthread_recursive_mutex_timedlock (__gthread_recursive_mutex_t *__mutex,
+ const __gthread_time_t *__abs_timeout)
+{
+ return __gthread_mutex_timedlock (__mutex, __abs_timeout);
+}
+#endif
+
+static inline int
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
+{
+ return __gthread_mutex_unlock (__mutex);
+}
+
+static inline int
+__gthread_cond_broadcast (__gthread_cond_t *__cond)
+{
+ return __gthrw_(pthread_cond_broadcast) (__cond);
+}
+
+static inline int
+__gthread_cond_signal (__gthread_cond_t *__cond)
+{
+ return __gthrw_(pthread_cond_signal) (__cond);
+}
+
+static inline int
+__gthread_cond_wait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex)
+{
+ return __gthrw_(pthread_cond_wait) (__cond, __mutex);
+}
+
+static inline int
+__gthread_cond_timedwait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex,
+ const __gthread_time_t *__abs_timeout)
+{
+ return __gthrw_(pthread_cond_timedwait) (__cond, __mutex, __abs_timeout);
+}
+
+static inline int
+__gthread_cond_wait_recursive (__gthread_cond_t *__cond,
+ __gthread_recursive_mutex_t *__mutex)
+{
+ return __gthread_cond_wait (__cond, __mutex);
+}
+
+static inline int
+__gthread_cond_timedwait_recursive (__gthread_cond_t *__cond,
+ __gthread_recursive_mutex_t *__mutex,
+ const __gthread_time_t *__abs_timeout)
+{
+ return __gthread_cond_timedwait (__cond, __mutex, __abs_timeout);
+}
+
+static inline int
+__gthread_cond_destroy (__gthread_cond_t* __cond)
+{
+ return __gthrw_(pthread_cond_destroy) (__cond);
+}
+
+#endif /* _LIBOBJC */
+
+#endif /* ! GCC_GTHR_POSIX_H */
diff --git a/libgcc/config/gthr-rtems.h b/libgcc/config/gthr-rtems.h
new file mode 100644
index 0000000..c5bd522
--- /dev/null
+++ b/libgcc/config/gthr-rtems.h
@@ -0,0 +1,157 @@
+/* RTEMS threads compatibility routines for libgcc2 and libobjc.
+ by: Rosimildo da Silva( rdasilva@connecttel.com ) */
+/* Compile this one with gcc. */
+/* Copyright (C) 1997, 1999, 2000, 2002, 2003, 2005, 2008, 2009
+ Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_GTHR_RTEMS_H
+#define GCC_GTHR_RTEMS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define __GTHREADS 1
+
+#define __GTHREAD_ONCE_INIT 0
+#define __GTHREAD_MUTEX_INIT_FUNCTION rtems_gxx_mutex_init
+#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION rtems_gxx_recursive_mutex_init
+
+/* Avoid dependency on rtems specific headers. */
+typedef void *__gthread_key_t;
+typedef int __gthread_once_t;
+typedef void *__gthread_mutex_t;
+typedef void *__gthread_recursive_mutex_t;
+
+/*
+ * External functions provided by RTEMS. They are very similar to their POSIX
+ * counterparts. A "Wrapper API" is being use to avoid dependency on any RTEMS
+ * header files.
+ */
+
+/* generic per task variables */
+extern int rtems_gxx_once (__gthread_once_t *__once, void (*__func) (void));
+extern int rtems_gxx_key_create (__gthread_key_t *__key, void (*__dtor) (void *));
+extern int rtems_gxx_key_delete (__gthread_key_t __key);
+extern void *rtems_gxx_getspecific (__gthread_key_t __key);
+extern int rtems_gxx_setspecific (__gthread_key_t __key, const void *__ptr);
+
+/* mutex support */
+extern void rtems_gxx_mutex_init (__gthread_mutex_t *__mutex);
+extern int rtems_gxx_mutex_destroy (__gthread_mutex_t *__mutex);
+extern int rtems_gxx_mutex_lock (__gthread_mutex_t *__mutex);
+extern int rtems_gxx_mutex_trylock (__gthread_mutex_t *__mutex);
+extern int rtems_gxx_mutex_unlock (__gthread_mutex_t *__mutex);
+
+/* recursive mutex support */
+extern void rtems_gxx_recursive_mutex_init (__gthread_recursive_mutex_t *__mutex);
+extern int rtems_gxx_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex);
+extern int rtems_gxx_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex);
+extern int rtems_gxx_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex);
+
+/* RTEMS threading is always active */
+static inline int
+__gthread_active_p (void)
+{
+ return 1;
+}
+
+/* Wrapper calls */
+static inline int
+__gthread_once (__gthread_once_t *__once, void (*__func) (void))
+{
+ return rtems_gxx_once( __once, __func );
+}
+
+static inline int
+__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
+{
+ return rtems_gxx_key_create( __key, __dtor );
+}
+
+static inline int
+__gthread_key_delete (__gthread_key_t __key)
+{
+ return rtems_gxx_key_delete (__key);
+}
+
+static inline void *
+__gthread_getspecific (__gthread_key_t __key)
+{
+ return rtems_gxx_getspecific (__key);
+}
+
+static inline int
+__gthread_setspecific (__gthread_key_t __key, const void *__ptr)
+{
+ return rtems_gxx_setspecific (__key, __ptr);
+}
+
+static inline int
+__gthread_mutex_destroy (__gthread_mutex_t *__mutex)
+{
+ return rtems_gxx_mutex_destroy (__mutex);
+}
+
+static inline int
+__gthread_mutex_lock (__gthread_mutex_t *__mutex)
+{
+ return rtems_gxx_mutex_lock (__mutex);
+}
+
+static inline int
+__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
+{
+ return rtems_gxx_mutex_trylock (__mutex);
+}
+
+static inline int
+__gthread_mutex_unlock (__gthread_mutex_t *__mutex)
+{
+ return rtems_gxx_mutex_unlock( __mutex );
+}
+
+static inline int
+__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
+{
+ return rtems_gxx_recursive_mutex_lock (__mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
+{
+ return rtems_gxx_recursive_mutex_trylock (__mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
+{
+ return rtems_gxx_recursive_mutex_unlock( __mutex );
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ! GCC_GTHR_RTEMS_H */
diff --git a/libgcc/config/gthr-vxworks.h b/libgcc/config/gthr-vxworks.h
new file mode 100644
index 0000000..2346b52
--- /dev/null
+++ b/libgcc/config/gthr-vxworks.h
@@ -0,0 +1,170 @@
+/* Threads compatibility routines for libgcc2 and libobjc for VxWorks. */
+/* Compile this one with gcc. */
+/* Copyright (C) 1997, 1999, 2000, 2008, 2009, 2011
+ Free Software Foundation, Inc.
+ Contributed by Mike Stump <mrs@wrs.com>.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_GTHR_VXWORKS_H
+#define GCC_GTHR_VXWORKS_H
+
+#ifdef _LIBOBJC
+
+/* libobjc requires the optional pthreads component. */
+#include "config/gthr-posix.h"
+
+#else
+#ifdef __cplusplus
+#define UNUSED(x)
+#else
+#define UNUSED(x) x __attribute__((unused))
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define __GTHREADS 1
+#define __gthread_active_p() 1
+
+/* Mutexes are easy, except that they need to be initialized at runtime. */
+
+#include <semLib.h>
+
+typedef SEM_ID __gthread_mutex_t;
+/* All VxWorks mutexes are recursive. */
+typedef SEM_ID __gthread_recursive_mutex_t;
+#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function
+#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
+
+static inline void
+__gthread_mutex_init_function (__gthread_mutex_t *mutex)
+{
+ *mutex = semMCreate (SEM_Q_PRIORITY | SEM_INVERSION_SAFE | SEM_DELETE_SAFE);
+}
+
+static inline int
+__gthread_mutex_destroy (__gthread_mutex_t * UNUSED(mutex))
+{
+ return 0;
+}
+
+static inline int
+__gthread_mutex_lock (__gthread_mutex_t *mutex)
+{
+ return semTake (*mutex, WAIT_FOREVER);
+}
+
+static inline int
+__gthread_mutex_trylock (__gthread_mutex_t *mutex)
+{
+ return semTake (*mutex, NO_WAIT);
+}
+
+static inline int
+__gthread_mutex_unlock (__gthread_mutex_t *mutex)
+{
+ return semGive (*mutex);
+}
+
+static inline void
+__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex)
+{
+ __gthread_mutex_init_function (mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex)
+{
+ return __gthread_mutex_lock (mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex)
+{
+ return __gthread_mutex_trylock (mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)
+{
+ return __gthread_mutex_unlock (mutex);
+}
+
+/* pthread_once is complicated enough that it's implemented
+ out-of-line. See config/vxlib.c. */
+
+typedef struct
+{
+#if !defined(__RTP__)
+#if defined(__PPC__)
+ __attribute ((aligned (__alignof (unsigned))))
+#endif
+ volatile unsigned char busy;
+#endif
+ volatile unsigned char done;
+#if !defined(__RTP__) && defined(__PPC__)
+ /* PPC's test-and-set implementation requires a 4 byte aligned
+ object, of which it only sets the first byte. We use padding
+ here, in order to maintain some amount of backwards
+ compatibility. Without this padding, gthread_once objects worked
+ by accident because they happen to be static objects and the ppc
+ port automatically increased their alignment to 4 bytes. */
+ unsigned char pad1;
+ unsigned char pad2;
+#endif
+}
+__gthread_once_t;
+
+#if defined (__RTP__)
+# define __GTHREAD_ONCE_INIT { 0 }
+#elif defined (__PPC__)
+# define __GTHREAD_ONCE_INIT { 0, 0, 0, 0 }
+#else
+# define __GTHREAD_ONCE_INIT { 0, 0 }
+#endif
+
+extern int __gthread_once (__gthread_once_t *__once, void (*__func)(void));
+
+/* Thread-specific data requires a great deal of effort, since VxWorks
+ is not really set up for it. See config/vxlib.c for the gory
+ details. All the TSD routines are sufficiently complex that they
+ need to be implemented out of line. */
+
+typedef unsigned int __gthread_key_t;
+
+extern int __gthread_key_create (__gthread_key_t *__keyp, void (*__dtor)(void *));
+extern int __gthread_key_delete (__gthread_key_t __key);
+
+extern void *__gthread_getspecific (__gthread_key_t __key);
+extern int __gthread_setspecific (__gthread_key_t __key, void *__ptr);
+
+#undef UNUSED
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* not _LIBOBJC */
+
+#endif /* gthr-vxworks.h */
diff --git a/libgcc/config/i386/gthr-win32.c b/libgcc/config/i386/gthr-win32.c
index 46ecb0d..ab1b69f 100644
--- a/libgcc/config/i386/gthr-win32.c
+++ b/libgcc/config/i386/gthr-win32.c
@@ -1,7 +1,8 @@
/* Implementation of W32-specific threads compatibility routines for
libgcc2. */
-/* Copyright (C) 1999, 2000, 2002, 2004, 2008, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 1999, 2000, 2002, 2004, 2008, 2009, 2011
+ Free Software Foundation, Inc.
Contributed by Mumit Khan <khan@xraylith.wisc.edu>.
Modified and moved to separate file by Danny Smith
<dannysmith@users.sourceforge.net>.
@@ -33,7 +34,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#endif
#undef __GTHREAD_I486_INLINE_LOCK_PRIMITIVES
#define __GTHREAD_I486_INLINE_LOCK_PRIMITIVES
-#include <gthr-win32.h>
+#include "gthr-win32.h"
/* Windows32 threads specific definitions. The windows32 threading model
does not map well into pthread-inspired gcc's threading model, and so
diff --git a/libgcc/config/i386/gthr-win32.h b/libgcc/config/i386/gthr-win32.h
new file mode 100644
index 0000000..53f8396
--- /dev/null
+++ b/libgcc/config/i386/gthr-win32.h
@@ -0,0 +1,772 @@
+/* Threads compatibility routines for libgcc2 and libobjc. */
+/* Compile this one with gcc. */
+
+/* Copyright (C) 1999, 2000, 2002, 2003, 2004, 2005, 2008, 2009
+ Free Software Foundation, Inc.
+ Contributed by Mumit Khan <khan@xraylith.wisc.edu>.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_GTHR_WIN32_H
+#define GCC_GTHR_WIN32_H
+
+/* Make sure CONST_CAST2 (origin in system.h) is declared. */
+#ifndef CONST_CAST2
+#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
+#endif
+
+/* Windows32 threads specific definitions. The windows32 threading model
+ does not map well into pthread-inspired gcc's threading model, and so
+ there are caveats one needs to be aware of.
+
+ 1. The destructor supplied to __gthread_key_create is ignored for
+ generic x86-win32 ports. This will certainly cause memory leaks
+ due to unreclaimed eh contexts (sizeof (eh_context) is at least
+ 24 bytes for x86 currently).
+
+ This memory leak may be significant for long-running applications
+ that make heavy use of C++ EH.
+
+ However, Mingw runtime (version 0.3 or newer) provides a mechanism
+ to emulate pthreads key dtors; the runtime provides a special DLL,
+ linked in if -mthreads option is specified, that runs the dtors in
+ the reverse order of registration when each thread exits. If
+ -mthreads option is not given, a stub is linked in instead of the
+ DLL, which results in memory leak. Other x86-win32 ports can use
+ the same technique of course to avoid the leak.
+
+ 2. The error codes returned are non-POSIX like, and cast into ints.
+ This may cause incorrect error return due to truncation values on
+ hw where sizeof (DWORD) > sizeof (int).
+
+ 3. We are currently using a special mutex instead of the Critical
+ Sections, since Win9x does not support TryEnterCriticalSection
+ (while NT does).
+
+ The basic framework should work well enough. In the long term, GCC
+ needs to use Structured Exception Handling on Windows32. */
+
+#define __GTHREADS 1
+
+#include <errno.h>
+#ifdef __MINGW32__
+#include <_mingw.h>
+#endif
+
+#ifndef __UNUSED_PARAM
+#define __UNUSED_PARAM(x) x
+#endif
+
+#ifdef _LIBOBJC
+
+/* This is necessary to prevent windef.h (included from windows.h) from
+ defining its own BOOL as a typedef. */
+#ifndef __OBJC__
+#define __OBJC__
+#endif
+#include <windows.h>
+/* Now undef the windows BOOL. */
+#undef BOOL
+
+/* Key structure for maintaining thread specific storage */
+static DWORD __gthread_objc_data_tls = (DWORD) -1;
+
+/* Backend initialization functions */
+
+/* Initialize the threads subsystem. */
+int
+__gthread_objc_init_thread_system (void)
+{
+ /* Initialize the thread storage key. */
+ if ((__gthread_objc_data_tls = TlsAlloc ()) != (DWORD) -1)
+ return 0;
+ else
+ return -1;
+}
+
+/* Close the threads subsystem. */
+int
+__gthread_objc_close_thread_system (void)
+{
+ if (__gthread_objc_data_tls != (DWORD) -1)
+ TlsFree (__gthread_objc_data_tls);
+ return 0;
+}
+
+/* Backend thread functions */
+
+/* Create a new thread of execution. */
+objc_thread_t
+__gthread_objc_thread_detach (void (*func)(void *arg), void *arg)
+{
+ DWORD thread_id = 0;
+ HANDLE win32_handle;
+
+ if (!(win32_handle = CreateThread (NULL, 0, (LPTHREAD_START_ROUTINE) func,
+ arg, 0, &thread_id)))
+ thread_id = 0;
+
+ return (objc_thread_t) (INT_PTR) thread_id;
+}
+
+/* Set the current thread's priority. */
+int
+__gthread_objc_thread_set_priority (int priority)
+{
+ int sys_priority = 0;
+
+ switch (priority)
+ {
+ case OBJC_THREAD_INTERACTIVE_PRIORITY:
+ sys_priority = THREAD_PRIORITY_NORMAL;
+ break;
+ default:
+ case OBJC_THREAD_BACKGROUND_PRIORITY:
+ sys_priority = THREAD_PRIORITY_BELOW_NORMAL;
+ break;
+ case OBJC_THREAD_LOW_PRIORITY:
+ sys_priority = THREAD_PRIORITY_LOWEST;
+ break;
+ }
+
+ /* Change priority */
+ if (SetThreadPriority (GetCurrentThread (), sys_priority))
+ return 0;
+ else
+ return -1;
+}
+
+/* Return the current thread's priority. */
+int
+__gthread_objc_thread_get_priority (void)
+{
+ int sys_priority;
+
+ sys_priority = GetThreadPriority (GetCurrentThread ());
+
+ switch (sys_priority)
+ {
+ case THREAD_PRIORITY_HIGHEST:
+ case THREAD_PRIORITY_TIME_CRITICAL:
+ case THREAD_PRIORITY_ABOVE_NORMAL:
+ case THREAD_PRIORITY_NORMAL:
+ return OBJC_THREAD_INTERACTIVE_PRIORITY;
+
+ default:
+ case THREAD_PRIORITY_BELOW_NORMAL:
+ return OBJC_THREAD_BACKGROUND_PRIORITY;
+
+ case THREAD_PRIORITY_IDLE:
+ case THREAD_PRIORITY_LOWEST:
+ return OBJC_THREAD_LOW_PRIORITY;
+ }
+
+ /* Couldn't get priority. */
+ return -1;
+}
+
+/* Yield our process time to another thread. */
+void
+__gthread_objc_thread_yield (void)
+{
+ Sleep (0);
+}
+
+/* Terminate the current thread. */
+int
+__gthread_objc_thread_exit (void)
+{
+ /* exit the thread */
+ ExitThread (__objc_thread_exit_status);
+
+ /* Failed if we reached here */
+ return -1;
+}
+
+/* Returns an integer value which uniquely describes a thread. */
+objc_thread_t
+__gthread_objc_thread_id (void)
+{
+ return (objc_thread_t) (INT_PTR) GetCurrentThreadId ();
+}
+
+/* Sets the thread's local storage pointer. */
+int
+__gthread_objc_thread_set_data (void *value)
+{
+ if (TlsSetValue (__gthread_objc_data_tls, value))
+ return 0;
+ else
+ return -1;
+}
+
+/* Returns the thread's local storage pointer. */
+void *
+__gthread_objc_thread_get_data (void)
+{
+ DWORD lasterror;
+ void *ptr;
+
+ lasterror = GetLastError ();
+
+ ptr = TlsGetValue (__gthread_objc_data_tls); /* Return thread data. */
+
+ SetLastError (lasterror);
+
+ return ptr;
+}
+
+/* Backend mutex functions */
+
+/* Allocate a mutex. */
+int
+__gthread_objc_mutex_allocate (objc_mutex_t mutex)
+{
+ if ((mutex->backend = (void *) CreateMutex (NULL, 0, NULL)) == NULL)
+ return -1;
+ else
+ return 0;
+}
+
+/* Deallocate a mutex. */
+int
+__gthread_objc_mutex_deallocate (objc_mutex_t mutex)
+{
+ CloseHandle ((HANDLE) (mutex->backend));
+ return 0;
+}
+
+/* Grab a lock on a mutex. */
+int
+__gthread_objc_mutex_lock (objc_mutex_t mutex)
+{
+ int status;
+
+ status = WaitForSingleObject ((HANDLE) (mutex->backend), INFINITE);
+ if (status != WAIT_OBJECT_0 && status != WAIT_ABANDONED)
+ return -1;
+ else
+ return 0;
+}
+
+/* Try to grab a lock on a mutex. */
+int
+__gthread_objc_mutex_trylock (objc_mutex_t mutex)
+{
+ int status;
+
+ status = WaitForSingleObject ((HANDLE) (mutex->backend), 0);
+ if (status != WAIT_OBJECT_0 && status != WAIT_ABANDONED)
+ return -1;
+ else
+ return 0;
+}
+
+/* Unlock the mutex */
+int
+__gthread_objc_mutex_unlock (objc_mutex_t mutex)
+{
+ if (ReleaseMutex ((HANDLE) (mutex->backend)) == 0)
+ return -1;
+ else
+ return 0;
+}
+
+/* Backend condition mutex functions */
+
+/* Allocate a condition. */
+int
+__gthread_objc_condition_allocate (objc_condition_t __UNUSED_PARAM(condition))
+{
+ /* Unimplemented. */
+ return -1;
+}
+
+/* Deallocate a condition. */
+int
+__gthread_objc_condition_deallocate (objc_condition_t __UNUSED_PARAM(condition))
+{
+ /* Unimplemented. */
+ return -1;
+}
+
+/* Wait on the condition */
+int
+__gthread_objc_condition_wait (objc_condition_t __UNUSED_PARAM(condition),
+ objc_mutex_t __UNUSED_PARAM(mutex))
+{
+ /* Unimplemented. */
+ return -1;
+}
+
+/* Wake up all threads waiting on this condition. */
+int
+__gthread_objc_condition_broadcast (objc_condition_t __UNUSED_PARAM(condition))
+{
+ /* Unimplemented. */
+ return -1;
+}
+
+/* Wake up one thread waiting on this condition. */
+int
+__gthread_objc_condition_signal (objc_condition_t __UNUSED_PARAM(condition))
+{
+ /* Unimplemented. */
+ return -1;
+}
+
+#else /* _LIBOBJC */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef unsigned long __gthread_key_t;
+
+typedef struct {
+ int done;
+ long started;
+} __gthread_once_t;
+
+typedef struct {
+ long counter;
+ void *sema;
+} __gthread_mutex_t;
+
+typedef struct {
+ long counter;
+ long depth;
+ unsigned long owner;
+ void *sema;
+} __gthread_recursive_mutex_t;
+
+#define __GTHREAD_ONCE_INIT {0, -1}
+#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function
+#define __GTHREAD_MUTEX_INIT_DEFAULT {-1, 0}
+#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION \
+ __gthread_recursive_mutex_init_function
+#define __GTHREAD_RECURSIVE_MUTEX_INIT_DEFAULT {-1, 0, 0, 0}
+
+#if defined (_WIN32) && !defined(__CYGWIN__)
+#define MINGW32_SUPPORTS_MT_EH 1
+/* Mingw runtime >= v0.3 provides a magic variable that is set to nonzero
+ if -mthreads option was specified, or 0 otherwise. This is to get around
+ the lack of weak symbols in PE-COFF. */
+extern int _CRT_MT;
+extern int __mingwthr_key_dtor (unsigned long, void (*) (void *));
+#endif /* _WIN32 && !__CYGWIN__ */
+
+/* The Windows95 kernel does not export InterlockedCompareExchange.
+ This provides a substitute. When building apps that reference
+ gthread_mutex_try_lock, the __GTHREAD_I486_INLINE_LOCK_PRIMITIVES
+ macro must be defined if Windows95 is a target. Currently
+ gthread_mutex_try_lock is not referenced by libgcc or libstdc++. */
+#ifdef __GTHREAD_I486_INLINE_LOCK_PRIMITIVES
+static inline long
+__gthr_i486_lock_cmp_xchg(long *__dest, long __xchg, long __comperand)
+{
+ long result;
+ __asm__ __volatile__ ("\n\
+ lock\n\
+ cmpxchg{l} {%4, %1|%1, %4}\n"
+ : "=a" (result), "=m" (*__dest)
+ : "0" (__comperand), "m" (*__dest), "r" (__xchg)
+ : "cc");
+ return result;
+}
+#define __GTHR_W32_InterlockedCompareExchange __gthr_i486_lock_cmp_xchg
+#else /* __GTHREAD_I486_INLINE_LOCK_PRIMITIVES */
+#define __GTHR_W32_InterlockedCompareExchange InterlockedCompareExchange
+#endif /* __GTHREAD_I486_INLINE_LOCK_PRIMITIVES */
+
+static inline int
+__gthread_active_p (void)
+{
+#ifdef MINGW32_SUPPORTS_MT_EH
+ return _CRT_MT;
+#else
+ return 1;
+#endif
+}
+
+#if __GTHREAD_HIDE_WIN32API
+
+/* The implementations are in config/i386/gthr-win32.c in libgcc.a.
+ Only stubs are exposed to avoid polluting the C++ namespace with
+ windows api definitions. */
+
+extern int __gthr_win32_once (__gthread_once_t *, void (*) (void));
+extern int __gthr_win32_key_create (__gthread_key_t *, void (*) (void*));
+extern int __gthr_win32_key_delete (__gthread_key_t);
+extern void * __gthr_win32_getspecific (__gthread_key_t);
+extern int __gthr_win32_setspecific (__gthread_key_t, const void *);
+extern void __gthr_win32_mutex_init_function (__gthread_mutex_t *);
+extern int __gthr_win32_mutex_lock (__gthread_mutex_t *);
+extern int __gthr_win32_mutex_trylock (__gthread_mutex_t *);
+extern int __gthr_win32_mutex_unlock (__gthread_mutex_t *);
+extern void
+ __gthr_win32_recursive_mutex_init_function (__gthread_recursive_mutex_t *);
+extern int __gthr_win32_recursive_mutex_lock (__gthread_recursive_mutex_t *);
+extern int
+ __gthr_win32_recursive_mutex_trylock (__gthread_recursive_mutex_t *);
+extern int __gthr_win32_recursive_mutex_unlock (__gthread_recursive_mutex_t *);
+extern void __gthr_win32_mutex_destroy (__gthread_mutex_t *);
+
+static inline int
+__gthread_once (__gthread_once_t *__once, void (*__func) (void))
+{
+ if (__gthread_active_p ())
+ return __gthr_win32_once (__once, __func);
+ else
+ return -1;
+}
+
+static inline int
+__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
+{
+ return __gthr_win32_key_create (__key, __dtor);
+}
+
+static inline int
+__gthread_key_delete (__gthread_key_t __key)
+{
+ return __gthr_win32_key_delete (__key);
+}
+
+static inline void *
+__gthread_getspecific (__gthread_key_t __key)
+{
+ return __gthr_win32_getspecific (__key);
+}
+
+static inline int
+__gthread_setspecific (__gthread_key_t __key, const void *__ptr)
+{
+ return __gthr_win32_setspecific (__key, __ptr);
+}
+
+static inline void
+__gthread_mutex_init_function (__gthread_mutex_t *__mutex)
+{
+ __gthr_win32_mutex_init_function (__mutex);
+}
+
+static inline void
+__gthread_mutex_destroy (__gthread_mutex_t *__mutex)
+{
+ __gthr_win32_mutex_destroy (__mutex);
+}
+
+static inline int
+__gthread_mutex_lock (__gthread_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ return __gthr_win32_mutex_lock (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ return __gthr_win32_mutex_trylock (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_mutex_unlock (__gthread_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ return __gthr_win32_mutex_unlock (__mutex);
+ else
+ return 0;
+}
+
+static inline void
+__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
+{
+ __gthr_win32_recursive_mutex_init_function (__mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ return __gthr_win32_recursive_mutex_lock (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ return __gthr_win32_recursive_mutex_trylock (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ return __gthr_win32_recursive_mutex_unlock (__mutex);
+ else
+ return 0;
+}
+
+#else /* ! __GTHREAD_HIDE_WIN32API */
+
+#include <windows.h>
+#include <errno.h>
+
+static inline int
+__gthread_once (__gthread_once_t *__once, void (*__func) (void))
+{
+ if (! __gthread_active_p ())
+ return -1;
+ else if (__once == NULL || __func == NULL)
+ return EINVAL;
+
+ if (! __once->done)
+ {
+ if (InterlockedIncrement (&(__once->started)) == 0)
+ {
+ (*__func) ();
+ __once->done = TRUE;
+ }
+ else
+ {
+ /* Another thread is currently executing the code, so wait for it
+ to finish; yield the CPU in the meantime. If performance
+ does become an issue, the solution is to use an Event that
+ we wait on here (and set above), but that implies a place to
+ create the event before this routine is called. */
+ while (! __once->done)
+ Sleep (0);
+ }
+ }
+
+ return 0;
+}
+
+/* Windows32 thread local keys don't support destructors; this leads to
+ leaks, especially in threaded applications making extensive use of
+ C++ EH. Mingw uses a thread-support DLL to work-around this problem. */
+static inline int
+__gthread_key_create (__gthread_key_t *__key,
+ void (*__dtor) (void *) __attribute__((unused)))
+{
+ int __status = 0;
+ DWORD __tls_index = TlsAlloc ();
+ if (__tls_index != 0xFFFFFFFF)
+ {
+ *__key = __tls_index;
+#ifdef MINGW32_SUPPORTS_MT_EH
+ /* Mingw runtime will run the dtors in reverse order for each thread
+ when the thread exits. */
+ __status = __mingwthr_key_dtor (*__key, __dtor);
+#endif
+ }
+ else
+ __status = (int) GetLastError ();
+ return __status;
+}
+
+static inline int
+__gthread_key_delete (__gthread_key_t __key)
+{
+ return (TlsFree (__key) != 0) ? 0 : (int) GetLastError ();
+}
+
+static inline void *
+__gthread_getspecific (__gthread_key_t __key)
+{
+ DWORD __lasterror;
+ void *__ptr;
+
+ __lasterror = GetLastError ();
+
+ __ptr = TlsGetValue (__key);
+
+ SetLastError (__lasterror);
+
+ return __ptr;
+}
+
+static inline int
+__gthread_setspecific (__gthread_key_t __key, const void *__ptr)
+{
+ if (TlsSetValue (__key, CONST_CAST2(void *, const void *, __ptr)) != 0)
+ return 0;
+ else
+ return GetLastError ();
+}
+
+static inline void
+__gthread_mutex_init_function (__gthread_mutex_t *__mutex)
+{
+ __mutex->counter = -1;
+ __mutex->sema = CreateSemaphore (NULL, 0, 65535, NULL);
+}
+
+static inline void
+__gthread_mutex_destroy (__gthread_mutex_t *__mutex)
+{
+ CloseHandle ((HANDLE) __mutex->sema);
+}
+
+static inline int
+__gthread_mutex_lock (__gthread_mutex_t *__mutex)
+{
+ int __status = 0;
+
+ if (__gthread_active_p ())
+ {
+ if (InterlockedIncrement (&__mutex->counter) == 0 ||
+ WaitForSingleObject (__mutex->sema, INFINITE) == WAIT_OBJECT_0)
+ __status = 0;
+ else
+ {
+ /* WaitForSingleObject returns WAIT_FAILED, and we can only do
+ some best-effort cleanup here. */
+ InterlockedDecrement (&__mutex->counter);
+ __status = 1;
+ }
+ }
+ return __status;
+}
+
+static inline int
+__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
+{
+ int __status = 0;
+
+ if (__gthread_active_p ())
+ {
+ if (__GTHR_W32_InterlockedCompareExchange (&__mutex->counter, 0, -1) < 0)
+ __status = 0;
+ else
+ __status = 1;
+ }
+ return __status;
+}
+
+static inline int
+__gthread_mutex_unlock (__gthread_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ {
+ if (InterlockedDecrement (&__mutex->counter) >= 0)
+ return ReleaseSemaphore (__mutex->sema, 1, NULL) ? 0 : 1;
+ }
+ return 0;
+}
+
+static inline void
+__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
+{
+ __mutex->counter = -1;
+ __mutex->depth = 0;
+ __mutex->owner = 0;
+ __mutex->sema = CreateSemaphore (NULL, 0, 65535, NULL);
+}
+
+static inline int
+__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ {
+ DWORD __me = GetCurrentThreadId();
+ if (InterlockedIncrement (&__mutex->counter) == 0)
+ {
+ __mutex->depth = 1;
+ __mutex->owner = __me;
+ }
+ else if (__mutex->owner == __me)
+ {
+ InterlockedDecrement (&__mutex->counter);
+ ++(__mutex->depth);
+ }
+ else if (WaitForSingleObject (__mutex->sema, INFINITE) == WAIT_OBJECT_0)
+ {
+ __mutex->depth = 1;
+ __mutex->owner = __me;
+ }
+ else
+ {
+ /* WaitForSingleObject returns WAIT_FAILED, and we can only do
+ some best-effort cleanup here. */
+ InterlockedDecrement (&__mutex->counter);
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static inline int
+__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ {
+ DWORD __me = GetCurrentThreadId();
+ if (__GTHR_W32_InterlockedCompareExchange (&__mutex->counter, 0, -1) < 0)
+ {
+ __mutex->depth = 1;
+ __mutex->owner = __me;
+ }
+ else if (__mutex->owner == __me)
+ ++(__mutex->depth);
+ else
+ return 1;
+ }
+ return 0;
+}
+
+static inline int
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ {
+ --(__mutex->depth);
+ if (__mutex->depth == 0)
+ {
+ __mutex->owner = 0;
+
+ if (InterlockedDecrement (&__mutex->counter) >= 0)
+ return ReleaseSemaphore (__mutex->sema, 1, NULL) ? 0 : 1;
+ }
+ }
+ return 0;
+}
+
+#endif /* __GTHREAD_HIDE_WIN32API */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _LIBOBJC */
+
+#endif /* ! GCC_GTHR_WIN32_H */
diff --git a/libgcc/config/mips/gthr-mipssde.h b/libgcc/config/mips/gthr-mipssde.h
new file mode 100644
index 0000000..34f9b6c
--- /dev/null
+++ b/libgcc/config/mips/gthr-mipssde.h
@@ -0,0 +1,230 @@
+/* MIPS SDE threads compatibility routines for libgcc2 and libobjc. */
+/* Compile this one with gcc. */
+/* Copyright (C) 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+ Contributed by Nigel Stephens <nigel@mips.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_GTHR_MIPSSDE_H
+#define GCC_GTHR_MIPSSDE_H
+
+/* MIPS SDE threading API specific definitions.
+ Easy, since the interface is pretty much one-to-one. */
+
+#define __GTHREADS 1
+
+#include <sdethread.h>
+#include <unistd.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef __sdethread_key_t __gthread_key_t;
+typedef __sdethread_once_t __gthread_once_t;
+typedef __sdethread_mutex_t __gthread_mutex_t;
+
+typedef struct {
+ long depth;
+ __sdethread_t owner;
+ __sdethread_mutex_t actual;
+} __gthread_recursive_mutex_t;
+
+#define __GTHREAD_MUTEX_INIT __SDETHREAD_MUTEX_INITIALIZER("gthr")
+#define __GTHREAD_ONCE_INIT __SDETHREAD_ONCE_INIT
+static inline int
+__gthread_recursive_mutex_init_function(__gthread_recursive_mutex_t *__mutex);
+#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
+
+#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
+# define __gthrw(name) \
+ static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name)));
+# define __gthrw_(name) __gthrw_ ## name
+#else
+# define __gthrw(name)
+# define __gthrw_(name) name
+#endif
+
+__gthrw(__sdethread_once)
+__gthrw(__sdethread_key_create)
+__gthrw(__sdethread_key_delete)
+__gthrw(__sdethread_getspecific)
+__gthrw(__sdethread_setspecific)
+
+__gthrw(__sdethread_self)
+
+__gthrw(__sdethread_mutex_lock)
+__gthrw(__sdethread_mutex_trylock)
+__gthrw(__sdethread_mutex_unlock)
+
+__gthrw(__sdethread_mutex_init)
+
+__gthrw(__sdethread_threading)
+
+#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
+
+static inline int
+__gthread_active_p (void)
+{
+ return !!(void *)&__sdethread_threading;
+}
+
+#else /* not SUPPORTS_WEAK */
+
+static inline int
+__gthread_active_p (void)
+{
+ return 1;
+}
+
+#endif /* SUPPORTS_WEAK */
+
+static inline int
+__gthread_once (__gthread_once_t *__once, void (*__func) (void))
+{
+ if (__gthread_active_p ())
+ return __gthrw_(__sdethread_once) (__once, __func);
+ else
+ return -1;
+}
+
+static inline int
+__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
+{
+ return __gthrw_(__sdethread_key_create) (__key, __dtor);
+}
+
+static inline int
+__gthread_key_delete (__gthread_key_t __key)
+{
+ return __gthrw_(__sdethread_key_delete) (__key);
+}
+
+static inline void *
+__gthread_getspecific (__gthread_key_t __key)
+{
+ return __gthrw_(__sdethread_getspecific) (__key);
+}
+
+static inline int
+__gthread_setspecific (__gthread_key_t __key, const void *__ptr)
+{
+ return __gthrw_(__sdethread_setspecific) (__key, __ptr);
+}
+
+static inline int
+__gthread_mutex_destroy (__gthread_mutex_t * UNUSED(__mutex))
+{
+ return 0;
+}
+
+static inline int
+__gthread_mutex_lock (__gthread_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(__sdethread_mutex_lock) (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(__sdethread_mutex_trylock) (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_mutex_unlock (__gthread_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(__sdethread_mutex_unlock) (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
+{
+ __mutex->depth = 0;
+ __mutex->owner = __gthrw_(__sdethread_self) ();
+ return __gthrw_(__sdethread_mutex_init) (&__mutex->actual, NULL);
+}
+
+static inline int
+__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ {
+ __sdethread_t __me = __gthrw_(__sdethread_self) ();
+
+ if (__mutex->owner != __me)
+ {
+ __gthrw_(__sdethread_mutex_lock) (&__mutex->actual);
+ __mutex->owner = __me;
+ }
+
+ __mutex->depth++;
+ }
+ return 0;
+}
+
+static inline int
+__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ {
+ __sdethread_t __me = __gthrw_(__sdethread_self) ();
+
+ if (__mutex->owner != __me)
+ {
+ if (__gthrw_(__sdethread_mutex_trylock) (&__mutex->actual))
+ return 1;
+ __mutex->owner = __me;
+ }
+
+ __mutex->depth++;
+ }
+ return 0;
+}
+
+static inline int
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ {
+ if (--__mutex->depth == 0)
+ {
+ __mutex->owner = (__sdethread_t) 0;
+ __gthrw_(__sdethread_mutex_unlock) (&__mutex->actual);
+ }
+ }
+ return 0;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ! GCC_GTHR_MIPSSDE_H */
diff --git a/libgcc/config/pa/gthr-dce.h b/libgcc/config/pa/gthr-dce.h
new file mode 100644
index 0000000..d32155a
--- /dev/null
+++ b/libgcc/config/pa/gthr-dce.h
@@ -0,0 +1,563 @@
+/* Threads compatibility routines for libgcc2 and libobjc. */
+/* Compile this one with gcc. */
+/* Copyright (C) 1997, 1999, 2000, 2001, 2004, 2005, 2008, 2009
+ Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_GTHR_DCE_H
+#define GCC_GTHR_DCE_H
+
+/* If _DCE_THREADS is not defined, then we're building the single
+ threaded version of the libraries and do not want to reference
+ anything related to pthreads or dce. */
+#ifndef _DCE_THREADS
+#include "gthr-single.h"
+#else
+/* DCE threads interface.
+ DCE threads are based on POSIX threads draft 4, and many things
+ have changed since then. */
+
+/* Make sure CONST_CAST2 (original in system.h) is defined. */
+#ifndef CONST_CAST2
+#ifdef __cplusplus
+#define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X))
+#else
+#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
+#endif
+#endif
+
+#define __GTHREADS 1
+
+#include <pthread.h>
+
+typedef pthread_key_t __gthread_key_t;
+typedef pthread_once_t __gthread_once_t;
+typedef pthread_mutex_t __gthread_mutex_t;
+typedef pthread_mutex_t __gthread_recursive_mutex_t;
+
+#define __GTHREAD_ONCE_INIT pthread_once_init
+
+#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function
+#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
+
+#define __GTHREAD_MUTEX_INIT_DEFAULT pthread_once_init
+
+#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
+# define __gthrw(name) \
+ static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name)));
+# define __gthrw_(name) __gthrw_ ## name
+#else
+# define __gthrw(name)
+# define __gthrw_(name) name
+#endif
+
+__gthrw(pthread_once)
+__gthrw(pthread_keycreate)
+__gthrw(pthread_getspecific)
+__gthrw(pthread_setspecific)
+__gthrw(pthread_create)
+__gthrw(pthread_mutex_init)
+__gthrw(pthread_mutex_destroy)
+__gthrw(pthread_mutex_lock)
+__gthrw(pthread_mutex_trylock)
+__gthrw(pthread_mutex_unlock)
+__gthrw(pthread_mutexattr_create)
+__gthrw(pthread_mutexattr_setkind_np)
+__gthrw(pthread_mutexattr_delete)
+
+#ifdef _LIBOBJC
+/* Objective-C. */
+__gthrw(pthread_cond_broadcast)
+__gthrw(pthread_cond_destroy)
+__gthrw(pthread_cond_init)
+__gthrw(pthread_cond_signal)
+__gthrw(pthread_cond_wait)
+__gthrw(pthread_exit)
+
+#ifdef pthread_getunique_np
+# define __gthrw_pthread_getunique_np pthread_getunique_np
+#else
+__gthrw(pthread_getunique_np)
+# define __gthrw_pthread_getunique_np __gthrw_(pthread_getunique_np)
+#endif
+
+__gthrw(pthread_mutex_destroy)
+__gthrw(pthread_self)
+__gthrw(pthread_yield)
+#endif
+
+#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
+
+static inline int
+__gthread_active_p (void)
+{
+ static void *const __gthread_active_ptr = (void *) &__gthrw_(pthread_create);
+ return __gthread_active_ptr != 0;
+}
+
+#else /* not SUPPORTS_WEAK */
+
+static inline int
+__gthread_active_p (void)
+{
+ return 1;
+}
+
+#endif /* SUPPORTS_WEAK */
+
+#ifdef _LIBOBJC
+
+/* Key structure for maintaining thread specific storage */
+static pthread_key_t _objc_thread_storage;
+
+/* Thread local storage for a single thread */
+static void *thread_local_storage = NULL;
+
+/* Backend initialization functions */
+
+/* Initialize the threads subsystem. */
+static inline int
+__gthread_objc_init_thread_system (void)
+{
+ if (__gthread_active_p ())
+ /* Initialize the thread storage key. */
+ return __gthrw_(pthread_keycreate) (&_objc_thread_storage, NULL);
+ else
+ return -1;
+}
+
+/* Close the threads subsystem. */
+static inline int
+__gthread_objc_close_thread_system (void)
+{
+ if (__gthread_active_p ())
+ return 0;
+ else
+ return -1;
+}
+
+/* Backend thread functions */
+
+/* Create a new thread of execution. */
+static inline objc_thread_t
+__gthread_objc_thread_detach (void (*func)(void *), void *arg)
+{
+ objc_thread_t thread_id;
+ pthread_t new_thread_handle;
+
+ if (!__gthread_active_p ())
+ return NULL;
+
+ if (!(__gthrw_(pthread_create) (&new_thread_handle, pthread_attr_default,
+ (void *) func, arg)))
+ {
+ /* ??? May not work! (64bit) */
+ thread_id = *(objc_thread_t *) &new_thread_handle;
+ pthread_detach (&new_thread_handle); /* Fully detach thread. */
+ }
+ else
+ thread_id = NULL;
+
+ return thread_id;
+}
+
+/* Set the current thread's priority. */
+static inline int
+__gthread_objc_thread_set_priority (int priority)
+{
+ int sys_priority = 0;
+
+ if (!__gthread_active_p ())
+ return -1;
+
+ switch (priority)
+ {
+ case OBJC_THREAD_INTERACTIVE_PRIORITY:
+ sys_priority = (PRI_FG_MIN_NP + PRI_FG_MAX_NP) / 2;
+ break;
+ default:
+ case OBJC_THREAD_BACKGROUND_PRIORITY:
+ sys_priority = (PRI_BG_MIN_NP + PRI_BG_MAX_NP) / 2;
+ break;
+ case OBJC_THREAD_LOW_PRIORITY:
+ sys_priority = (PRI_BG_MIN_NP + PRI_BG_MAX_NP) / 2;
+ break;
+ }
+
+ /* Change the priority. */
+ if (pthread_setprio (__gthrw_(pthread_self) (), sys_priority) >= 0)
+ return 0;
+ else
+ /* Failed */
+ return -1;
+}
+
+/* Return the current thread's priority. */
+static inline int
+__gthread_objc_thread_get_priority (void)
+{
+ int sys_priority;
+
+ if (__gthread_active_p ())
+ {
+ if ((sys_priority = pthread_getprio (__gthrw_(pthread_self) ())) >= 0)
+ {
+ if (sys_priority >= PRI_FG_MIN_NP
+ && sys_priority <= PRI_FG_MAX_NP)
+ return OBJC_THREAD_INTERACTIVE_PRIORITY;
+ if (sys_priority >= PRI_BG_MIN_NP
+ && sys_priority <= PRI_BG_MAX_NP)
+ return OBJC_THREAD_BACKGROUND_PRIORITY;
+ return OBJC_THREAD_LOW_PRIORITY;
+ }
+
+ /* Failed */
+ return -1;
+ }
+ else
+ return OBJC_THREAD_INTERACTIVE_PRIORITY;
+}
+
+/* Yield our process time to another thread. */
+static inline void
+__gthread_objc_thread_yield (void)
+{
+ if (__gthread_active_p ())
+ __gthrw_(pthread_yield) ();
+}
+
+/* Terminate the current thread. */
+static inline int
+__gthread_objc_thread_exit (void)
+{
+ if (__gthread_active_p ())
+ /* exit the thread */
+ __gthrw_(pthread_exit) (&__objc_thread_exit_status);
+
+ /* Failed if we reached here */
+ return -1;
+}
+
+/* Returns an integer value which uniquely describes a thread. */
+static inline objc_thread_t
+__gthread_objc_thread_id (void)
+{
+ if (__gthread_active_p ())
+ {
+ pthread_t self = __gthrw_(pthread_self) ();
+
+ return (objc_thread_t) __gthrw_pthread_getunique_np (&self);
+ }
+ else
+ return (objc_thread_t) 1;
+}
+
+/* Sets the thread's local storage pointer. */
+static inline int
+__gthread_objc_thread_set_data (void *value)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_setspecific) (_objc_thread_storage, value);
+ else
+ {
+ thread_local_storage = value;
+ return 0;
+ }
+}
+
+/* Returns the thread's local storage pointer. */
+static inline void *
+__gthread_objc_thread_get_data (void)
+{
+ void *value = NULL;
+
+ if (__gthread_active_p ())
+ {
+ if (!(__gthrw_(pthread_getspecific) (_objc_thread_storage, &value)))
+ return value;
+
+ return NULL;
+ }
+ else
+ return thread_local_storage;
+}
+
+/* Backend mutex functions */
+
+/* Allocate a mutex. */
+static inline int
+__gthread_objc_mutex_allocate (objc_mutex_t mutex)
+{
+ if (__gthread_active_p ())
+ {
+ mutex->backend = objc_malloc (sizeof (pthread_mutex_t));
+
+ if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend,
+ pthread_mutexattr_default))
+ {
+ objc_free (mutex->backend);
+ mutex->backend = NULL;
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+/* Deallocate a mutex. */
+static inline int
+__gthread_objc_mutex_deallocate (objc_mutex_t mutex)
+{
+ if (__gthread_active_p ())
+ {
+ if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend))
+ return -1;
+
+ objc_free (mutex->backend);
+ mutex->backend = NULL;
+ }
+
+ return 0;
+}
+
+/* Grab a lock on a mutex. */
+static inline int
+__gthread_objc_mutex_lock (objc_mutex_t mutex)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend);
+ else
+ return 0;
+}
+
+/* Try to grab a lock on a mutex. */
+static inline int
+__gthread_objc_mutex_trylock (objc_mutex_t mutex)
+{
+ if (__gthread_active_p ()
+ && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 1)
+ return -1;
+
+ return 0;
+}
+
+/* Unlock the mutex */
+static inline int
+__gthread_objc_mutex_unlock (objc_mutex_t mutex)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend);
+ else
+ return 0;
+}
+
+/* Backend condition mutex functions */
+
+/* Allocate a condition. */
+static inline int
+__gthread_objc_condition_allocate (objc_condition_t condition
+ __attribute__ ((__unused__)))
+{
+ if (__gthread_active_p ())
+ /* Unimplemented. */
+ return -1;
+ else
+ return 0;
+}
+
+/* Deallocate a condition. */
+static inline int
+__gthread_objc_condition_deallocate (objc_condition_t condition
+ __attribute__ ((__unused__)))
+{
+ if (__gthread_active_p ())
+ /* Unimplemented. */
+ return -1;
+ else
+ return 0;
+}
+
+/* Wait on the condition */
+static inline int
+__gthread_objc_condition_wait (objc_condition_t condition
+ __attribute__ ((__unused__)),
+ objc_mutex_t mutex __attribute__ ((__unused__)))
+{
+ if (__gthread_active_p ())
+ /* Unimplemented. */
+ return -1;
+ else
+ return 0;
+}
+
+/* Wake up all threads waiting on this condition. */
+static inline int
+__gthread_objc_condition_broadcast (objc_condition_t condition
+ __attribute__ ((__unused__)))
+{
+ if (__gthread_active_p ())
+ /* Unimplemented. */
+ return -1;
+ else
+ return 0;
+}
+
+/* Wake up one thread waiting on this condition. */
+static inline int
+__gthread_objc_condition_signal (objc_condition_t condition
+ __attribute__ ((__unused__)))
+{
+ if (__gthread_active_p ())
+ /* Unimplemented. */
+ return -1;
+ else
+ return 0;
+}
+
+#else /* _LIBOBJC */
+
+static inline int
+__gthread_once (__gthread_once_t *__once, void (*__func) (void))
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_once) (__once, __func);
+ else
+ return -1;
+}
+
+static inline int
+__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
+{
+ return __gthrw_(pthread_keycreate) (__key, __dtor);
+}
+
+static inline int
+__gthread_key_delete (__gthread_key_t __key __attribute__ ((__unused__)))
+{
+ /* Operation is not supported. */
+ return -1;
+}
+
+static inline void *
+__gthread_getspecific (__gthread_key_t __key)
+{
+ void *__ptr;
+ if (__gthrw_(pthread_getspecific) (__key, &__ptr) == 0)
+ return __ptr;
+ else
+ return 0;
+}
+
+static inline int
+__gthread_setspecific (__gthread_key_t __key, const void *__ptr)
+{
+ return __gthrw_(pthread_setspecific)
+ (__key, CONST_CAST2(void *, const void *, __ptr));
+}
+
+static inline void
+__gthread_mutex_init_function (__gthread_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ __gthrw_(pthread_mutex_init) (__mutex, pthread_mutexattr_default);
+}
+
+static inline int
+__gthread_mutex_destroy (__gthread_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_mutex_destroy) (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_mutex_lock (__gthread_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_mutex_lock) (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_mutex_trylock) (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_mutex_unlock (__gthread_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ return __gthrw_(pthread_mutex_unlock) (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ {
+ pthread_mutexattr_t __attr;
+ int __r;
+
+ __r = __gthrw_(pthread_mutexattr_create) (&__attr);
+ if (!__r)
+ __r = __gthrw_(pthread_mutexattr_setkind_np) (&__attr,
+ MUTEX_RECURSIVE_NP);
+ if (!__r)
+ __r = __gthrw_(pthread_mutex_init) (__mutex, __attr);
+ if (!__r)
+ __r = __gthrw_(pthread_mutexattr_delete) (&__attr);
+ return __r;
+ }
+ return 0;
+}
+
+static inline int
+__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
+{
+ return __gthread_mutex_lock (__mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
+{
+ return __gthread_mutex_trylock (__mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
+{
+ return __gthread_mutex_unlock (__mutex);
+}
+
+#endif /* _LIBOBJC */
+
+#endif
+#endif /* ! GCC_GTHR_DCE_H */
diff --git a/libgcc/config/rs6000/gthr-aix.h b/libgcc/config/rs6000/gthr-aix.h
new file mode 100644
index 0000000..342f091
--- /dev/null
+++ b/libgcc/config/rs6000/gthr-aix.h
@@ -0,0 +1,35 @@
+/* Threads compatibility routines for libgcc2 and libobjc. */
+/* Compile this one with gcc. */
+/* Copyright (C) 2000, 2009, 2011 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_GTHR_AIX_H
+#define GCC_GTHR_AIX_H
+
+#ifdef _THREAD_SAFE
+#include "config/gthr-posix.h"
+#else
+#include "gthr-single.h"
+#endif
+
+#endif /* GCC_GTHR_AIX_H */
diff --git a/libgcc/config/s390/gthr-tpf.h b/libgcc/config/s390/gthr-tpf.h
new file mode 100644
index 0000000..fb23e91
--- /dev/null
+++ b/libgcc/config/s390/gthr-tpf.h
@@ -0,0 +1,229 @@
+/* Threads compatibility routines for libgcc2 and libobjc.
+ Compile this one with gcc.
+ Copyright (C) 2004, 2005, 2008, 2009 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+/* TPF needs its own version of gthr-*.h because TPF always links to
+ the thread library. However, for performance reasons we still do not
+ want to issue thread api calls unless a check is made to see that we
+ are running as a thread. */
+
+#ifndef GCC_GTHR_TPF_H
+#define GCC_GTHR_TPF_H
+
+/* POSIX threads specific definitions.
+ Easy, since the interface is just one-to-one mapping. */
+
+#define __GTHREADS 1
+
+/* Some implementations of <pthread.h> require this to be defined. */
+#ifndef _REENTRANT
+#define _REENTRANT 1
+#endif
+
+#include <pthread.h>
+#include <unistd.h>
+
+typedef pthread_key_t __gthread_key_t;
+typedef pthread_once_t __gthread_once_t;
+typedef pthread_mutex_t __gthread_mutex_t;
+typedef pthread_mutex_t __gthread_recursive_mutex_t;
+
+#if defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER)
+#define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER
+#elif defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP)
+#define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
+#endif
+
+#define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
+#define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT
+#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
+
+#define NOTATHREAD 00
+#define ECBBASEPTR (unsigned long int) *(unsigned int *)0x00000514u
+#define ECBPG2PTR ECBBASEPTR + 0x1000
+#define CE2THRCPTR *((unsigned char *)(ECBPG2PTR + 16))
+#define __tpf_pthread_active() (CE2THRCPTR != NOTATHREAD)
+
+#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
+# define __gthrw(name) \
+ static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name)));
+# define __gthrw_(name) __gthrw_ ## name
+#else
+# define __gthrw(name)
+# define __gthrw_(name) name
+#endif
+
+__gthrw(pthread_once)
+__gthrw(pthread_key_create)
+__gthrw(pthread_key_delete)
+__gthrw(pthread_getspecific)
+__gthrw(pthread_setspecific)
+__gthrw(pthread_create)
+
+__gthrw(pthread_mutex_lock)
+__gthrw(pthread_mutex_trylock)
+__gthrw(pthread_mutex_unlock)
+__gthrw(pthread_mutexattr_init)
+__gthrw(pthread_mutexattr_settype)
+__gthrw(pthread_mutexattr_destroy)
+__gthrw(pthread_mutex_init)
+__gthrw(pthread_mutex_destroy)
+
+static inline int
+__gthread_active_p (void)
+{
+ return 1;
+}
+
+static inline int
+__gthread_once (__gthread_once_t *__once, void (*__func) (void))
+{
+ if (__tpf_pthread_active ())
+ return __gthrw_(pthread_once) (__once, __func);
+ else
+ return -1;
+}
+
+static inline int
+__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
+{
+ if (__tpf_pthread_active ())
+ return __gthrw_(pthread_key_create) (__key, __dtor);
+ else
+ return -1;
+}
+
+static inline int
+__gthread_key_delete (__gthread_key_t __key)
+{
+ if (__tpf_pthread_active ())
+ return __gthrw_(pthread_key_delete) (__key);
+ else
+ return -1;
+}
+
+static inline void *
+__gthread_getspecific (__gthread_key_t __key)
+{
+ if (__tpf_pthread_active ())
+ return __gthrw_(pthread_getspecific) (__key);
+ else
+ return NULL;
+}
+
+static inline int
+__gthread_setspecific (__gthread_key_t __key, const void *__ptr)
+{
+ if (__tpf_pthread_active ())
+ return __gthrw_(pthread_setspecific) (__key, __ptr);
+ else
+ return -1;
+}
+
+static inline int
+__gthread_mutex_destroy (__gthread_mutex_t *__mutex)
+{
+ if (__tpf_pthread_active ())
+ return __gthrw_(pthread_mutex_destroy) (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_mutex_lock (__gthread_mutex_t *__mutex)
+{
+ if (__tpf_pthread_active ())
+ return __gthrw_(pthread_mutex_lock) (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
+{
+ if (__tpf_pthread_active ())
+ return __gthrw_(pthread_mutex_trylock) (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_mutex_unlock (__gthread_mutex_t *__mutex)
+{
+ if (__tpf_pthread_active ())
+ return __gthrw_(pthread_mutex_unlock) (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
+{
+ if (__tpf_pthread_active ())
+ return __gthread_mutex_lock (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
+{
+ if (__tpf_pthread_active ())
+ return __gthread_mutex_trylock (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
+{
+ if (__tpf_pthread_active ())
+ return __gthread_mutex_unlock (__mutex);
+ else
+ return 0;
+}
+
+static inline int
+__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
+{
+ if (__tpf_pthread_active ())
+ {
+ pthread_mutexattr_t __attr;
+ int __r;
+
+ __r = __gthrw_(pthread_mutexattr_init) (&__attr);
+ if (!__r)
+ __r = __gthrw_(pthread_mutexattr_settype) (&__attr,
+ PTHREAD_MUTEX_RECURSIVE);
+ if (!__r)
+ __r = __gthrw_(pthread_mutex_init) (__mutex, &__attr);
+ if (!__r)
+ __r = __gthrw_(pthread_mutexattr_destroy) (&__attr);
+ return __r;
+ }
+ return 0;
+}
+
+
+#endif /* ! GCC_GTHR_TPF_H */
diff --git a/libgcc/configure b/libgcc/configure
index 63b91b4..0d91645 100644
--- a/libgcc/configure
+++ b/libgcc/configure
@@ -2273,7 +2273,7 @@ case $host_os in *\ *) host_os=`echo "$host_os" | sed 's/ /-/g'`;; esac
- # FIXME: Do we need something for CFLAGS below?
+
case "${host}" in
# PIC is the default on some targets or must not be used.
@@ -2288,24 +2288,23 @@ case "${host}" in
hppa*64*-*-hpux*)
# PIC is the default for 64-bit PA HP-UX.
;;
- i3456786-*-cygwin* | i3456786-*-mingw* | x86_64-*-mingw*)
+ i[34567]86-*-cygwin* | i[34567]86-*-mingw* | x86_64-*-mingw*)
;;
- i3456786-*-interix3*)
+ i[34567]86-*-interix3*)
# Interix 3.x gcc -fpic/-fPIC options generate broken code.
# Instead, we relocate shared libraries at runtime.
;;
- i3456786-*-nto-qnx*)
+ i[34567]86-*-nto-qnx*)
# QNX uses GNU C++, but need to define -shared option too, otherwise
# it will coredump.
PICFLAG='-fPIC -shared'
;;
- i3456786-pc-msdosdjgpp*)
+ i[34567]86-pc-msdosdjgpp*)
# DJGPP does not support shared libraries at all.
;;
ia64*-*-hpux*)
# On IA64 HP-UX, PIC is the default but the pic flag
# sets the default TLS model and affects inlining.
- # FIXME: Still in gcc 4.7?
PICFLAG=-fPIC
;;
mips-sgi-irix6*)
@@ -2317,7 +2316,7 @@ case "${host}" in
# Some targets support both -fPIC and -fpic, but prefer the latter.
# FIXME: Why?
- i3456786-*-* | x86_64-*-*)
+ i[34567]86-*-* | x86_64-*-*)
PICFLAG=-fpic
;;
m68k-*-*)
@@ -2327,7 +2326,7 @@ case "${host}" in
PICFLAG=-fpic
;;
# FIXME: Override -fPIC default in libgcc only?
- sh-*-linux* | sh2346lbe*-*-linux*)
+ sh-*-linux* | sh[2346lbe]*-*-linux*)
PICFLAG=-fpic
;;
# FIXME: Simplify to sh*-*-netbsd*?
@@ -2335,22 +2334,22 @@ case "${host}" in
sh64-*-netbsd* | sh64l*-*-netbsd*)
PICFLAG=-fpic
;;
- sparc*-*-*)
- # FIXME: This could be done everywhere -fpic and -fPIC differ.
- case "${CFLAGS}" in
- *-fpic*)
- PICFLAG=-fpic
- ;;
- *)
- PICFLAG=-fPIC
- ;;
- esac ;;
# Default to -fPIC unless specified otherwise.
*)
PICFLAG=-fPIC
;;
esac
+# If the user explicitly uses -fpic/-fPIC, keep that.
+case "${CFLAGS}" in
+ *-fpic*)
+ PICFLAG=-fpic
+ ;;
+ *-fPIC*)
+ PICFLAG=-fPIC
+ ;;
+esac
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --enable-version-specific-runtime-libs" >&5
@@ -4797,6 +4796,20 @@ tm_file="${tm_file_}"
+# Map from thread model to thread header.
+case $target_thread_file in
+ aix) thread_header=config/rs6000/gthr-aix.h ;;
+ dce) thread_header=config/pa/gthr-dce.h ;;
+ lynx) thread_header=config/gthr-lynx.h ;;
+ mipssde) thread_header=config/mips/gthr-mipssde.h ;;
+ posix) thread_header=config/gthr-posix.h ;;
+ rtems) thread_header=config/gthr-rtems.h ;;
+ single) thread_header=gthr-single.h ;;
+ tpf) thread_header=config/s390/gthr-tpf.h ;;
+ vxworks) thread_header=config/gthr-vxworks.h ;;
+ win32) thread_header=config/i386/gthr-win32.h ;;
+esac
+
# Substitute configuration variables
@@ -4809,6 +4822,8 @@ ac_config_links="$ac_config_links md-unwind-support.h:config/$md_unwind_header"
ac_config_links="$ac_config_links sfp-machine.h:config/$sfp_machine_header"
+ac_config_links="$ac_config_links gthr-default.h:$thread_header"
+
# We need multilib support.
ac_config_files="$ac_config_files Makefile"
@@ -5538,6 +5553,7 @@ do
"unwind.h") CONFIG_LINKS="$CONFIG_LINKS unwind.h:$unwind_header" ;;
"md-unwind-support.h") CONFIG_LINKS="$CONFIG_LINKS md-unwind-support.h:config/$md_unwind_header" ;;
"sfp-machine.h") CONFIG_LINKS="$CONFIG_LINKS sfp-machine.h:config/$sfp_machine_header" ;;
+ "gthr-default.h") CONFIG_LINKS="$CONFIG_LINKS gthr-default.h:$thread_header" ;;
"Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
"default") CONFIG_COMMANDS="$CONFIG_COMMANDS default" ;;
diff --git a/libgcc/configure.ac b/libgcc/configure.ac
index 303a95f..a505257 100644
--- a/libgcc/configure.ac
+++ b/libgcc/configure.ac
@@ -364,6 +364,20 @@ tm_file="${tm_file_}"
AC_SUBST(tm_file)
AC_SUBST(tm_defines)
+# Map from thread model to thread header.
+case $target_thread_file in
+ aix) thread_header=config/rs6000/gthr-aix.h ;;
+ dce) thread_header=config/pa/gthr-dce.h ;;
+ lynx) thread_header=config/gthr-lynx.h ;;
+ mipssde) thread_header=config/mips/gthr-mipssde.h ;;
+ posix) thread_header=config/gthr-posix.h ;;
+ rtems) thread_header=config/gthr-rtems.h ;;
+ single) thread_header=gthr-single.h ;;
+ tpf) thread_header=config/s390/gthr-tpf.h ;;
+ vxworks) thread_header=config/gthr-vxworks.h ;;
+ win32) thread_header=config/i386/gthr-win32.h ;;
+esac
+
# Substitute configuration variables
AC_SUBST(cpu_type)
AC_SUBST(extra_parts)
@@ -372,6 +386,7 @@ AC_CONFIG_LINKS([enable-execute-stack.c:$enable_execute_stack])
AC_CONFIG_LINKS([unwind.h:$unwind_header])
AC_CONFIG_LINKS([md-unwind-support.h:config/$md_unwind_header])
AC_CONFIG_LINKS([sfp-machine.h:config/$sfp_machine_header])
+AC_CONFIG_LINKS([gthr-default.h:$thread_header])
# We need multilib support.
AC_CONFIG_FILES([Makefile])
diff --git a/libgcc/gthr-single.h b/libgcc/gthr-single.h
new file mode 100644
index 0000000..357528a
--- /dev/null
+++ b/libgcc/gthr-single.h
@@ -0,0 +1,292 @@
+/* Threads compatibility routines for libgcc2 and libobjc. */
+/* Compile this one with gcc. */
+/* Copyright (C) 1997, 1999, 2000, 2004, 2008, 2009
+ Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_GTHR_SINGLE_H
+#define GCC_GTHR_SINGLE_H
+
+/* Just provide compatibility for mutex handling. */
+
+typedef int __gthread_key_t;
+typedef int __gthread_once_t;
+typedef int __gthread_mutex_t;
+typedef int __gthread_recursive_mutex_t;
+
+#define __GTHREAD_ONCE_INIT 0
+#define __GTHREAD_MUTEX_INIT 0
+#define __GTHREAD_RECURSIVE_MUTEX_INIT 0
+
+#define UNUSED __attribute__((unused))
+
+#ifdef _LIBOBJC
+
+/* Thread local storage for a single thread */
+static void *thread_local_storage = NULL;
+
+/* Backend initialization functions */
+
+/* Initialize the threads subsystem. */
+static inline int
+__gthread_objc_init_thread_system (void)
+{
+ /* No thread support available */
+ return -1;
+}
+
+/* Close the threads subsystem. */
+static inline int
+__gthread_objc_close_thread_system (void)
+{
+ /* No thread support available */
+ return -1;
+}
+
+/* Backend thread functions */
+
+/* Create a new thread of execution. */
+static inline objc_thread_t
+__gthread_objc_thread_detach (void (* func)(void *), void * arg UNUSED)
+{
+ /* No thread support available */
+ return NULL;
+}
+
+/* Set the current thread's priority. */
+static inline int
+__gthread_objc_thread_set_priority (int priority UNUSED)
+{
+ /* No thread support available */
+ return -1;
+}
+
+/* Return the current thread's priority. */
+static inline int
+__gthread_objc_thread_get_priority (void)
+{
+ return OBJC_THREAD_INTERACTIVE_PRIORITY;
+}
+
+/* Yield our process time to another thread. */
+static inline void
+__gthread_objc_thread_yield (void)
+{
+ return;
+}
+
+/* Terminate the current thread. */
+static inline int
+__gthread_objc_thread_exit (void)
+{
+ /* No thread support available */
+ /* Should we really exit the program */
+ /* exit (&__objc_thread_exit_status); */
+ return -1;
+}
+
+/* Returns an integer value which uniquely describes a thread. */
+static inline objc_thread_t
+__gthread_objc_thread_id (void)
+{
+ /* No thread support, use 1. */
+ return (objc_thread_t) 1;
+}
+
+/* Sets the thread's local storage pointer. */
+static inline int
+__gthread_objc_thread_set_data (void *value)
+{
+ thread_local_storage = value;
+ return 0;
+}
+
+/* Returns the thread's local storage pointer. */
+static inline void *
+__gthread_objc_thread_get_data (void)
+{
+ return thread_local_storage;
+}
+
+/* Backend mutex functions */
+
+/* Allocate a mutex. */
+static inline int
+__gthread_objc_mutex_allocate (objc_mutex_t mutex UNUSED)
+{
+ return 0;
+}
+
+/* Deallocate a mutex. */
+static inline int
+__gthread_objc_mutex_deallocate (objc_mutex_t mutex UNUSED)
+{
+ return 0;
+}
+
+/* Grab a lock on a mutex. */
+static inline int
+__gthread_objc_mutex_lock (objc_mutex_t mutex UNUSED)
+{
+ /* There can only be one thread, so we always get the lock */
+ return 0;
+}
+
+/* Try to grab a lock on a mutex. */
+static inline int
+__gthread_objc_mutex_trylock (objc_mutex_t mutex UNUSED)
+{
+ /* There can only be one thread, so we always get the lock */
+ return 0;
+}
+
+/* Unlock the mutex */
+static inline int
+__gthread_objc_mutex_unlock (objc_mutex_t mutex UNUSED)
+{
+ return 0;
+}
+
+/* Backend condition mutex functions */
+
+/* Allocate a condition. */
+static inline int
+__gthread_objc_condition_allocate (objc_condition_t condition UNUSED)
+{
+ return 0;
+}
+
+/* Deallocate a condition. */
+static inline int
+__gthread_objc_condition_deallocate (objc_condition_t condition UNUSED)
+{
+ return 0;
+}
+
+/* Wait on the condition */
+static inline int
+__gthread_objc_condition_wait (objc_condition_t condition UNUSED,
+ objc_mutex_t mutex UNUSED)
+{
+ return 0;
+}
+
+/* Wake up all threads waiting on this condition. */
+static inline int
+__gthread_objc_condition_broadcast (objc_condition_t condition UNUSED)
+{
+ return 0;
+}
+
+/* Wake up one thread waiting on this condition. */
+static inline int
+__gthread_objc_condition_signal (objc_condition_t condition UNUSED)
+{
+ return 0;
+}
+
+#else /* _LIBOBJC */
+
+static inline int
+__gthread_active_p (void)
+{
+ return 0;
+}
+
+static inline int
+__gthread_once (__gthread_once_t *__once UNUSED, void (*__func) (void) UNUSED)
+{
+ return 0;
+}
+
+static inline int UNUSED
+__gthread_key_create (__gthread_key_t *__key UNUSED, void (*__func) (void *) UNUSED)
+{
+ return 0;
+}
+
+static int UNUSED
+__gthread_key_delete (__gthread_key_t __key UNUSED)
+{
+ return 0;
+}
+
+static inline void *
+__gthread_getspecific (__gthread_key_t __key UNUSED)
+{
+ return 0;
+}
+
+static inline int
+__gthread_setspecific (__gthread_key_t __key UNUSED, const void *__v UNUSED)
+{
+ return 0;
+}
+
+static inline int
+__gthread_mutex_destroy (__gthread_mutex_t *__mutex UNUSED)
+{
+ return 0;
+}
+
+static inline int
+__gthread_mutex_lock (__gthread_mutex_t *__mutex UNUSED)
+{
+ return 0;
+}
+
+static inline int
+__gthread_mutex_trylock (__gthread_mutex_t *__mutex UNUSED)
+{
+ return 0;
+}
+
+static inline int
+__gthread_mutex_unlock (__gthread_mutex_t *__mutex UNUSED)
+{
+ return 0;
+}
+
+static inline int
+__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
+{
+ return __gthread_mutex_lock (__mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
+{
+ return __gthread_mutex_trylock (__mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
+{
+ return __gthread_mutex_unlock (__mutex);
+}
+
+#endif /* _LIBOBJC */
+
+#undef UNUSED
+
+#endif /* ! GCC_GTHR_SINGLE_H */
diff --git a/libgcc/gthr.h b/libgcc/gthr.h
new file mode 100644
index 0000000..607c26e
--- /dev/null
+++ b/libgcc/gthr.h
@@ -0,0 +1,148 @@
+/* Threads compatibility routines for libgcc2. */
+/* Compile this one with gcc. */
+/* Copyright (C) 1997, 1998, 2004, 2008, 2009, 2011
+ Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_GTHR_H
+#define GCC_GTHR_H
+
+#ifndef HIDE_EXPORTS
+#pragma GCC visibility push(default)
+#endif
+
+/* If this file is compiled with threads support, it must
+ #define __GTHREADS 1
+ to indicate that threads support is present. Also it has define
+ function
+ int __gthread_active_p ()
+ that returns 1 if thread system is active, 0 if not.
+
+ The threads interface must define the following types:
+ __gthread_key_t
+ __gthread_once_t
+ __gthread_mutex_t
+ __gthread_recursive_mutex_t
+
+ The threads interface must define the following macros:
+
+ __GTHREAD_ONCE_INIT
+ to initialize __gthread_once_t
+ __GTHREAD_MUTEX_INIT
+ to initialize __gthread_mutex_t to get a fast
+ non-recursive mutex.
+ __GTHREAD_MUTEX_INIT_FUNCTION
+ some systems can't initialize a mutex without a
+ function call. On such systems, define this to a
+ function which looks like this:
+ void __GTHREAD_MUTEX_INIT_FUNCTION (__gthread_mutex_t *)
+ Don't define __GTHREAD_MUTEX_INIT in this case
+ __GTHREAD_RECURSIVE_MUTEX_INIT
+ __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION
+ as above, but for a recursive mutex.
+
+ The threads interface must define the following static functions:
+
+ int __gthread_once (__gthread_once_t *once, void (*func) ())
+
+ int __gthread_key_create (__gthread_key_t *keyp, void (*dtor) (void *))
+ int __gthread_key_delete (__gthread_key_t key)
+
+ void *__gthread_getspecific (__gthread_key_t key)
+ int __gthread_setspecific (__gthread_key_t key, const void *ptr)
+
+ int __gthread_mutex_destroy (__gthread_mutex_t *mutex);
+
+ int __gthread_mutex_lock (__gthread_mutex_t *mutex);
+ int __gthread_mutex_trylock (__gthread_mutex_t *mutex);
+ int __gthread_mutex_unlock (__gthread_mutex_t *mutex);
+
+ int __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex);
+ int __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex);
+ int __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex);
+
+ The following are supported in POSIX threads only. They are required to
+ fix a deadlock in static initialization inside libsupc++. The header file
+ gthr-posix.h defines a symbol __GTHREAD_HAS_COND to signify that these extra
+ features are supported.
+
+ Types:
+ __gthread_cond_t
+
+ Macros:
+ __GTHREAD_COND_INIT
+ __GTHREAD_COND_INIT_FUNCTION
+
+ Interface:
+ int __gthread_cond_broadcast (__gthread_cond_t *cond);
+ int __gthread_cond_wait (__gthread_cond_t *cond, __gthread_mutex_t *mutex);
+ int __gthread_cond_wait_recursive (__gthread_cond_t *cond,
+ __gthread_recursive_mutex_t *mutex);
+
+ All functions returning int should return zero on success or the error
+ number. If the operation is not supported, -1 is returned.
+
+ If the following are also defined, you should
+ #define __GTHREADS_CXX0X 1
+ to enable the c++0x thread library.
+
+ Types:
+ __gthread_t
+ __gthread_time_t
+
+ Interface:
+ int __gthread_create (__gthread_t *thread, void *(*func) (void*),
+ void *args);
+ int __gthread_join (__gthread_t thread, void **value_ptr);
+ int __gthread_detach (__gthread_t thread);
+ int __gthread_equal (__gthread_t t1, __gthread_t t2);
+ __gthread_t __gthread_self (void);
+ int __gthread_yield (void);
+
+ int __gthread_mutex_timedlock (__gthread_mutex_t *m,
+ const __gthread_time_t *abs_timeout);
+ int __gthread_recursive_mutex_timedlock (__gthread_recursive_mutex_t *m,
+ const __gthread_time_t *abs_time);
+
+ int __gthread_cond_signal (__gthread_cond_t *cond);
+ int __gthread_cond_timedwait (__gthread_cond_t *cond,
+ __gthread_mutex_t *mutex,
+ const __gthread_time_t *abs_timeout);
+ int __gthread_cond_timedwait_recursive (__gthread_cond_t *cond,
+ __gthread_recursive_mutex_t *mutex,
+ const __gthread_time_t *abs_time)
+
+*/
+
+#if SUPPORTS_WEAK
+#ifndef GTHREAD_USE_WEAK
+#define GTHREAD_USE_WEAK 1
+#endif
+#endif
+#include "gthr-default.h"
+
+#ifndef HIDE_EXPORTS
+#pragma GCC visibility pop
+#endif
+
+#endif /* ! GCC_GTHR_H */