--- /dev/null
+/* Threads compatibility routines for libgcc2 and libobjc. */
+/* Compile this one with gcc. */
+/* Copyright (C) 2002, 2003, 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_NKS_H
+#define GCC_GTHR_NKS_H
+
+/* NKS threads specific definitions.
+ Easy, since the interface is mostly one-to-one mapping. */
+
+#define __GTHREADS 1
+
+#define NKS_NO_INLINE_FUNCS
+#include <nksapi.h>
+#include <string.h>
+
+typedef NXKey_t __gthread_key_t;
+typedef NXMutex_t *__gthread_mutex_t;
+typedef NXMutex_t *__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 int
+__gthread_active_p (void)
+{
+ return 1;
+}
+
+#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 NXKey_t _objc_thread_storage;
+
+/* Backend initialization functions */
+
+/* Initialize the threads subsystem. */
+static inline int
+__gthread_objc_init_thread_system (void)
+{
+ /* Initialize the thread storage key. */
+ if (NXKeyCreate (NULL, NULL, &_objc_thread_storage) == 0)
+ return 0;
+ return -1;
+}
+
+/* Close the threads subsystem. */
+static inline int
+__gthread_objc_close_thread_system (void)
+{
+ if (NXKeyDelete (_objc_thread_storage) == 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;
+ NXContext_t context;
+ NXThreadId_t new_thread_handle;
+ int err;
+
+ if ((context = NXContextAlloc (func, arg, NX_PRIO_MED, 0, 0, 0, &err)) == NULL)
+ thread_id = NULL;
+ else if (NXThreadCreate (context, NX_THR_DETACHED, &new_thread_handle) == 0)
+ thread_id = (objc_thread_t) new_thread_handle;
+ else {
+ NXContextFree (context);
+ thread_id = NULL;
+ }
+
+ return thread_id;
+}
+
+/* Set the current thread's priority. */
+static inline int
+__gthread_objc_thread_set_priority (int priority)
+{
+ if (NXThreadSetPriority (NXThreadGetId (), priority) == 0)
+ return 0;
+ return -1;
+}
+
+/* Return the current thread's priority. */
+static inline int
+__gthread_objc_thread_get_priority (void)
+{
+ int priority;
+
+ if (NXThreadGetPriority (NXThreadGetId (), &priority) == 0)
+ return priority;
+ return -1;
+}
+
+/* Yield our process time to another thread. */
+static inline void
+__gthread_objc_thread_yield (void)
+{
+ NXThreadYield ();
+}
+
+/* Terminate the current thread. */
+static inline int
+__gthread_objc_thread_exit (void)
+{
+ /* exit the thread */
+ NXThreadExit (&__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)
+{
+ (objc_thread_t) NXThreadGetId ();
+}
+
+/* Sets the thread's local storage pointer. */
+static inline int
+__gthread_objc_thread_set_data (void *value)
+{
+ return NXKeySetValue (_objc_thread_storage, value);
+}
+
+/* Returns the thread's local storage pointer. */
+static inline void *
+__gthread_objc_thread_get_data (void)
+{
+ void *value;
+
+ if (NXKeyGetValue (_objc_thread_storage, &value) == 0)
+ return value;
+ return NULL;
+}
+
+/* Backend mutex functions */
+
+/* Allocate a mutex. */
+static inline int
+__gthread_objc_mutex_allocate (objc_mutex_t mutex)
+{
+ static const NX_LOCK_INFO_ALLOC (info, "GNU ObjC", 0);
+
+ if ((mutex->backend = NXMutexAlloc (0, 0, &info)) == NULL)
+ return 0;
+ return -1;
+}
+
+/* Deallocate a mutex. */
+static inline int
+__gthread_objc_mutex_deallocate (objc_mutex_t mutex)
+{
+ while (NXMutexIsOwned ((NXMutex_t *)mutex->backend))
+ NXUnlock ((NXMutex_t *)mutex->backend);
+ if (NXMutexFree ((NXMutex_t *)mutex->backend) != 0)
+ return -1;
+ mutex->backend = NULL;
+ return 0;
+}
+
+/* Grab a lock on a mutex. */
+static inline int
+__gthread_objc_mutex_lock (objc_mutex_t mutex)
+{
+ return NXLock ((NXMutex_t *)mutex->backend);
+}
+
+/* Try to grab a lock on a mutex. */
+static inline int
+__gthread_objc_mutex_trylock (objc_mutex_t mutex)
+{
+ if (!NXTryLock ((NXMutex_t *)mutex->backend))
+ return -1;
+ return 0;
+}
+
+/* Unlock the mutex */
+static inline int
+__gthread_objc_mutex_unlock (objc_mutex_t mutex)
+{
+ return NXUnlock ((NXMutex_t *)mutex->backend);
+}
+
+/* Backend condition mutex functions */
+
+/* Allocate a condition. */
+static inline int
+__gthread_objc_condition_allocate (objc_condition_t condition)
+{
+ condition->backend = NXCondAlloc (NULL);
+ if (condition->backend == NULL)
+ return -1;
+
+ return 0;
+}
+
+/* Deallocate a condition. */
+static inline int
+__gthread_objc_condition_deallocate (objc_condition_t condition)
+{
+ if (NXCondFree ((NXCond_t *)condition->backend) != 0)
+ return -1;
+ condition->backend = NULL;
+ return 0;
+}
+
+/* Wait on the condition */
+static inline int
+__gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)
+{
+ return NXCondWait ((NXCond_t *)condition->backend, (NXMutex_t *)mutex->backend);
+}
+
+/* Wake up all threads waiting on this condition. */
+static inline int
+__gthread_objc_condition_broadcast (objc_condition_t condition)
+{
+ return NXCondBroadcast ((NXCond_t *)condition->backend);
+}
+
+/* Wake up one thread waiting on this condition. */
+static inline int
+__gthread_objc_condition_signal (objc_condition_t condition)
+{
+ return NXCondSignal ((NXCond_t *)condition->backend);
+}
+
+#else /* _LIBOBJC */
+
+#if defined(__cplusplus)
+# include <bits/atomicity.h>
+/* The remaining conditions here are temporary until there is
+ an application accessible atomic operations API set... */
+#elif defined(_M_IA64) || defined(__ia64__)
+# include <../libstdc++-v3/config/cpu/ia64/bits/atomicity.h>
+#elif defined(_M_IX86) || defined(__i486__)
+# include <../libstdc++-v3/config/cpu/i486/bits/atomicity.h>
+#elif defined(_M_AMD64) || defined(__x86_64__)
+# include <../libstdc++-v3/config/cpu/x86-64/bits/atomicity.h>
+#endif
+
+typedef volatile long __gthread_once_t;
+
+#define __GTHREAD_ONCE_INIT 0
+
+static inline int
+__gthread_once (__gthread_once_t *__once, void (*__func) (void))
+{
+ if (__compare_and_swap (__once, 0, 1))
+ {
+ __func ();
+ *__once |= 2;
+ }
+ else
+ {
+ while (!(*__once & 2))
+ NXThreadYield ();
+ }
+ return 0;
+}
+
+static inline int
+__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
+{
+ return NXKeyCreate (__dtor, NULL, __key);
+}
+
+static inline int
+__gthread_key_dtor (__gthread_key_t __key, void *__ptr)
+{
+ /* Just reset the key value to zero. */
+ if (__ptr)
+ return NXKeySetValue (__key, NULL);
+ return 0;
+}
+
+static inline int
+__gthread_key_delete (__gthread_key_t __key)
+{
+ return NXKeyDelete (__key);
+}
+
+static inline void *
+__gthread_getspecific (__gthread_key_t __key)
+{
+ void *__value;
+
+ if (NXKeyGetValue (__key, &__value) == 0)
+ return __value;
+ return NULL;
+}
+
+static inline int
+__gthread_setspecific (__gthread_key_t __key, const void *__ptr)
+{
+ return NXKeySetValue (__key, (void *)__ptr);
+}
+
+static inline void
+__gthread_mutex_init_function (__gthread_mutex_t *__mutex)
+{
+ static const NX_LOCK_INFO_ALLOC (__info, "GTHREADS", 0);
+
+ *__mutex = NXMutexAlloc (0, 0, &__info);
+}
+
+static inline int
+__gthread_mutex_destroy (__gthread_mutex_t * UNUSED(__mutex))
+{
+ return 0;
+}
+
+static inline int
+__gthread_mutex_lock (__gthread_mutex_t *__mutex)
+{
+ return NXLock (*__mutex);
+}
+
+static inline int
+__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
+{
+ if (NXTryLock (*__mutex))
+ return 0;
+ return -1;
+}
+
+static inline int
+__gthread_mutex_unlock (__gthread_mutex_t *__mutex)
+{
+ return NXUnlock (*__mutex);
+}
+
+static inline void
+__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
+{
+ static const NX_LOCK_INFO_ALLOC (__info, "GTHREADS", 0);
+
+ *__mutex = NXMutexAlloc (NX_MUTEX_RECURSIVE, 0, &__info);
+}
+
+static inline int
+__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
+{
+ return NXLock (*__mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
+{
+ if (NXTryLock (*__mutex))
+ return 0;
+ return -1;
+}
+
+static inline int
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
+{
+ return NXUnlock (*__mutex);
+}
+
+#endif /* _LIBOBJC */
+
+#endif /* not GCC_GTHR_NKS_H */
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