diff options
Diffstat (limited to 'gcc-4.4.3/libgomp/config/linux/x86/futex.h')
| -rw-r--r-- | gcc-4.4.3/libgomp/config/linux/x86/futex.h | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/gcc-4.4.3/libgomp/config/linux/x86/futex.h b/gcc-4.4.3/libgomp/config/linux/x86/futex.h deleted file mode 100644 index cb7461d89..000000000 --- a/gcc-4.4.3/libgomp/config/linux/x86/futex.h +++ /dev/null @@ -1,153 +0,0 @@ -/* Copyright (C) 2005, 2008, 2009 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 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. */ - -#ifdef __LP64__ -# ifndef SYS_futex -# define SYS_futex 202 -# endif - -static inline void -futex_wait (int *addr, int val) -{ - register long r10 __asm__("%r10"); - long res; - - r10 = 0; - __asm volatile ("syscall" - : "=a" (res) - : "0" (SYS_futex), "D" (addr), "S" (gomp_futex_wait), - "d" (val), "r" (r10) - : "r11", "rcx", "memory"); - if (__builtin_expect (res == -ENOSYS, 0)) - { - gomp_futex_wait &= ~FUTEX_PRIVATE_FLAG; - gomp_futex_wake &= ~FUTEX_PRIVATE_FLAG; - r10 = 0; - __asm volatile ("syscall" - : "=a" (res) - : "0" (SYS_futex), "D" (addr), "S" (gomp_futex_wait), - "d" (val), "r" (r10) - : "r11", "rcx", "memory"); - } -} - -static inline void -futex_wake (int *addr, int count) -{ - long res; - - __asm volatile ("syscall" - : "=a" (res) - : "0" (SYS_futex), "D" (addr), "S" (gomp_futex_wake), - "d" (count) - : "r11", "rcx", "memory"); - if (__builtin_expect (res == -ENOSYS, 0)) - { - gomp_futex_wait &= ~FUTEX_PRIVATE_FLAG; - gomp_futex_wake &= ~FUTEX_PRIVATE_FLAG; - __asm volatile ("syscall" - : "=a" (res) - : "0" (SYS_futex), "D" (addr), "S" (gomp_futex_wake), - "d" (count) - : "r11", "rcx", "memory"); - } -} -#else -# ifndef SYS_futex -# define SYS_futex 240 -# endif - -# ifdef __PIC__ - -static inline long -sys_futex0 (int *addr, int op, int val) -{ - long res; - - __asm volatile ("xchgl\t%%ebx, %2\n\t" - "int\t$0x80\n\t" - "xchgl\t%%ebx, %2" - : "=a" (res) - : "0"(SYS_futex), "r" (addr), "c"(op), - "d"(val), "S"(0) - : "memory"); - return res; -} - -# else - -static inline long -sys_futex0 (int *addr, int op, int val) -{ - long res; - - __asm volatile ("int $0x80" - : "=a" (res) - : "0"(SYS_futex), "b" (addr), "c"(op), - "d"(val), "S"(0) - : "memory"); - return res; -} - -# endif /* __PIC__ */ - -static inline void -futex_wait (int *addr, int val) -{ - long res = sys_futex0 (addr, gomp_futex_wait, val); - if (__builtin_expect (res == -ENOSYS, 0)) - { - gomp_futex_wait &= ~FUTEX_PRIVATE_FLAG; - gomp_futex_wake &= ~FUTEX_PRIVATE_FLAG; - sys_futex0 (addr, gomp_futex_wait, val); - } -} - -static inline void -futex_wake (int *addr, int count) -{ - long res = sys_futex0 (addr, gomp_futex_wake, count); - if (__builtin_expect (res == -ENOSYS, 0)) - { - gomp_futex_wait &= ~FUTEX_PRIVATE_FLAG; - gomp_futex_wake &= ~FUTEX_PRIVATE_FLAG; - sys_futex0 (addr, gomp_futex_wake, count); - } -} - -#endif /* __LP64__ */ - -static inline void -cpu_relax (void) -{ - __asm volatile ("rep; nop" : : : "memory"); -} - -static inline void -atomic_write_barrier (void) -{ - __sync_synchronize (); -} |