diff options
Diffstat (limited to 'gcc-4.2.1-5666.3/libgomp/config/linux/ia64/futex.h')
-rw-r--r-- | gcc-4.2.1-5666.3/libgomp/config/linux/ia64/futex.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/gcc-4.2.1-5666.3/libgomp/config/linux/ia64/futex.h b/gcc-4.2.1-5666.3/libgomp/config/linux/ia64/futex.h new file mode 100644 index 000000000..5e54982d6 --- /dev/null +++ b/gcc-4.2.1-5666.3/libgomp/config/linux/ia64/futex.h @@ -0,0 +1,71 @@ +/* Copyright (C) 2005 Free Software Foundation, Inc. + Contributed by Richard Henderson <rth@redhat.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 Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, 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 Lesser General Public License for + more details. + + You should have received a copy of the GNU Lesser General Public License + along with libgomp; see the file COPYING.LIB. If not, write to the + Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, + MA 02110-1301, 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. */ + +/* Provide target-specific access to the futex system call. */ + +#include <sys/syscall.h> + +#define FUTEX_WAIT 0 +#define FUTEX_WAKE 1 + + +static inline void +sys_futex0(int *addr, int op, int val) +{ + register long out0 asm ("out0") = (long) addr; + register long out1 asm ("out1") = op; + register long out2 asm ("out2") = val; + register long out3 asm ("out3") = 0; + register long r15 asm ("r15") = SYS_futex; + + __asm __volatile ("break 0x100000" + : "=r"(r15), "=r"(out0), "=r"(out1), "=r"(out2), "=r"(out3) + : "r"(r15), "r"(out0), "r"(out1), "r"(out2), "r"(out3) + : "memory", "r8", "r10", "out4", "out5", "out6", "out7", + /* Non-stacked integer registers, minus r8, r10, r15. */ + "r2", "r3", "r9", "r11", "r12", "r13", "r14", "r16", "r17", "r18", + "r19", "r20", "r21", "r22", "r23", "r24", "r25", "r26", "r27", + "r28", "r29", "r30", "r31", + /* Predicate registers. */ + "p6", "p7", "p8", "p9", "p10", "p11", "p12", "p13", "p14", "p15", + /* Non-rotating fp registers. */ + "f6", "f7", "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", + /* Branch registers. */ + "b6"); +} + +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); +} |