Here is the libgomp port.
* configure.tgt: Handle tilegx and tilepro.
* config/linux/tile/futex.h: New file.
diff -r -u -p -N
/home/packages/gcc-4.7.0-179959/libgomp/config/linux/tile/futex.h
./libgomp/config/linux/tile/futex.h
--- /home/packages/gcc-4.7.0-179959/libgomp/config/linux/tile/futex.h
1969-12-31 19:00:00.000000000 -0500
+++ ./libgomp/config/linux/tile/futex.h 2011-10-14 18:14:11.657740000 -0400
@@ -0,0 +1,73 @@
+/* Copyright (C) 2011
+ Free Software Foundation, Inc.
+ Contributed by Walter Lee (w...@tilera.com)
+
+ This file is part of the GNU OpenMP Library (libgomp).
+
+ Libgomp 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.
+
+ Libgomp 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/>. */
+
+/* Provide target-specific access to the futex system call. */
+
+#include <sys/syscall.h>
+#include <linux/futex.h>
+
+static inline void
+sys_futex0 (int *addr, int op, int val)
+{
+ long _sys_result;
+ long _clobber_r2, _clobber_r3, _clobber_r4, _clobber_r5, _clobber_r10;
+ int err;
+
+ __asm__ __volatile__ (
+ "swint1"
+ : "=R00" (_sys_result), "=R01" (err), "=R02" (_clobber_r2),
+ "=R03" (_clobber_r3), "=R04" (_clobber_r4), "=R05" (_clobber_r5),
+ "=R10" (_clobber_r10)
+ : "R10" (SYS_futex), "R00" (addr), "R01" (op), "R02" (val),
+ "R03" (0)
+ : "r6", "r7",
+ "r8", "r9", "r11", "r12", "r13", "r14", "r15",
+ "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
+ "r24", "r25", "r26", "r27", "r28", "r29", "memory");
+}
+
+static inline void
+futex_wait (int *addr, int val)
+{
+ sys_futex0 (addr, FUTEX_WAIT, val);
+}
+
+static inline void
+futex_wake (int *addr, int count)
+{
+ sys_futex0 (addr, FUTEX_WAKE, count);
+}
+
+static inline void
+cpu_relax (void)
+{
+ __asm volatile ("" : : : "memory");
+}
+
+static inline void
+atomic_write_barrier (void)
+{
+ __sync_synchronize ();
+}
diff -r -u -p -N /home/packages/gcc-4.7.0-179959/libgomp/configure.tgt
./libgomp/configure.tgt
--- /home/packages/gcc-4.7.0-179959/libgomp/configure.tgt 2011-10-14
00:46:46.000000000 -0400
+++ ./libgomp/configure.tgt 2011-10-14 18:14:11.167723000 -0400
@@ -51,6 +51,10 @@ if test $enable_linux_futex = yes; then
config_path="linux/s390 linux posix"
;;
+ tile*-*-linux*)
+ config_path="linux/tile linux posix"
+ ;;
+
# Note that bare i386 is not included here. We need cmpxchg.
i[456]86-*-linux*)
config_path="linux/x86 linux posix"
