gthr-tpf.h: New file.

2004-09-23  P.J. Darcy  <darcypj@us.ibm.com>

gcc/ChangeLog:

	* gthr-tpf.h: New file.
	* config.gcc (s390x-ibm-tpf*): Add thread_file='tpf'.
	* gthr.h: Use gthr-tpf.h on TPF OS.

libstdc++-v3/ChangeLog:

	* include/Makefile.am (thread_host_headers): Add gthr-tpf.h.
	Add rule to build ${host_builddir}/gthr-tpf.h.
	* include/Makefile.in: Regenerate.

From-SVN: r87982

1 files changed, 157 insertions, 0 deletions

diff --git a/gcc/gthr-tpf.h b/gcc/gthr-tpf.h
new file mode 100644
index 0000000..9831c66
--- /dev/null
+++ b/gcc/gthr-tpf.h
@@ -0,0 +1,157 @@
+/* Threads compatibility routines for libgcc2 and libobjc.
+   Compile this one with gcc.
+   Copyright (C) 2004 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 2, 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.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING.  If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA.  */
+
+/* As a special exception, if you link this library with other files,
+   some of which are compiled with GCC, to produce an executable,
+   this library does not by itself cause the resulting executable
+   to be covered by the GNU General Public License.
+   This exception does not however invalidate any other reasons why
+   the executable file might be covered by the GNU General Public License.  */
+
+
+/* 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;
+
+#define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
+#define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT
+
+#define NOTATHREAD   00
+#define ECBBASEPTR (unsigned long int) *(unsigned int *)0x00000514u
+#define ECBPG2PTR  ECBBASEPTR + 0x1000
+#define CE2THRCPTR *((unsigned char *)(ECBPG2PTR + 208))
+#define __tpf_pthread_active() (CE2THRCPTR != NOTATHREAD)
+
+#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
+
+#pragma weak pthread_once
+#pragma weak pthread_key_create
+#pragma weak pthread_key_delete
+#pragma weak pthread_getspecific
+#pragma weak pthread_setspecific
+#pragma weak pthread_create
+
+#pragma weak pthread_mutex_lock
+#pragma weak pthread_mutex_trylock
+#pragma weak pthread_mutex_unlock
+
+#endif /* SUPPORTS_WEAK */
+
+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 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 pthread_key_create (key, dtor);
+  else
+    return -1;
+}
+
+static inline int
+__gthread_key_delete (__gthread_key_t key)
+{
+  if (__tpf_pthread_active ())
+    return pthread_key_delete (key);
+  else
+    return -1;
+}
+
+static inline void *
+__gthread_getspecific (__gthread_key_t key)
+{
+  if (__tpf_pthread_active ())
+    return pthread_getspecific (key);
+  else
+    return NULL;
+}
+
+static inline int
+__gthread_setspecific (__gthread_key_t key, const void *ptr)
+{
+  if (__tpf_pthread_active ())
+    return pthread_setspecific (key, ptr);
+  else
+    return -1;
+}
+
+static inline int
+__gthread_mutex_lock (__gthread_mutex_t *mutex)
+{
+  if (__tpf_pthread_active ())
+    return pthread_mutex_lock (mutex);
+  else
+    return 0;
+}
+
+static inline int
+__gthread_mutex_trylock (__gthread_mutex_t *mutex)
+{
+  if (__tpf_pthread_active ())
+    return pthread_mutex_trylock (mutex);
+  else
+    return 0;
+}
+
+static inline int
+__gthread_mutex_unlock (__gthread_mutex_t *mutex)
+{
+  if (__tpf_pthread_active ())
+    return pthread_mutex_unlock (mutex);
+  else
+    return 0;
+}
+
+#endif /* ! GCC_GTHR_TPF_H */