| /* 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. */ |
| |
| #ifndef SYS_futex |
| #define SYS_futex 394 |
| #endif |
| #define FUTEX_WAIT 0 |
| #define FUTEX_WAKE 1 |
| |
| |
| static inline void |
| futex_wait (int *addr, int val) |
| { |
| register long sc_0 __asm__("$0"); |
| register long sc_16 __asm__("$16"); |
| register long sc_17 __asm__("$17"); |
| register long sc_18 __asm__("$18"); |
| register long sc_19 __asm__("$19"); |
| |
| sc_0 = SYS_futex; |
| sc_16 = (long) addr; |
| sc_17 = FUTEX_WAIT; |
| sc_18 = val; |
| sc_19 = 0; |
| __asm volatile ("callsys" |
| : "=r" (sc_0), "=r"(sc_19) |
| : "0"(sc_0), "r" (sc_16), "r"(sc_17), "r"(sc_18), "1"(sc_19) |
| : "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", |
| "$22", "$23", "$24", "$25", "$27", "$28", "memory"); |
| } |
| |
| static inline void |
| futex_wake (int *addr, int count) |
| { |
| register long sc_0 __asm__("$0"); |
| register long sc_16 __asm__("$16"); |
| register long sc_17 __asm__("$17"); |
| register long sc_18 __asm__("$18"); |
| register long sc_19 __asm__("$19"); |
| |
| sc_0 = SYS_futex; |
| sc_16 = (long) addr; |
| sc_17 = FUTEX_WAKE; |
| sc_18 = count; |
| __asm volatile ("callsys" |
| : "=r" (sc_0), "=r"(sc_19) |
| : "0"(sc_0), "r" (sc_16), "r"(sc_17), "r"(sc_18) |
| : "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", |
| "$22", "$23", "$24", "$25", "$27", "$28", "memory"); |
| } |