diff options
Diffstat (limited to 'libatomic/config')
-rw-r--r-- | libatomic/config/nvptx/host-config.h | 56 | ||||
-rw-r--r-- | libatomic/config/nvptx/lock.c | 56 |
2 files changed, 112 insertions, 0 deletions
diff --git a/libatomic/config/nvptx/host-config.h b/libatomic/config/nvptx/host-config.h new file mode 100644 index 0000000..eb9de81 --- /dev/null +++ b/libatomic/config/nvptx/host-config.h @@ -0,0 +1,56 @@ +/* Copyright (C) 2020 Free Software Foundation, Inc. + + This file is part of the GNU Atomic Library (libatomic). + + Libatomic 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 of the License, or + (at your option) any later version. + + Libatomic 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/>. */ + +/* Copied from libatomic/config/posix/host-config.h. */ + +/* Included after all more target-specific host-config.h. */ + + +#ifndef protect_start_end +# ifdef HAVE_ATTRIBUTE_VISIBILITY +# pragma GCC visibility push(hidden) +# endif + +void libat_lock_1 (void *ptr); +void libat_unlock_1 (void *ptr); + +static inline UWORD +protect_start (void *ptr) +{ + libat_lock_1 (ptr); + return 0; +} + +static inline void +protect_end (void *ptr, UWORD dummy UNUSED) +{ + libat_unlock_1 (ptr); +} + +# define protect_start_end 1 +# ifdef HAVE_ATTRIBUTE_VISIBILITY +# pragma GCC visibility pop +# endif +#endif /* protect_start_end */ + +#include_next <host-config.h> diff --git a/libatomic/config/nvptx/lock.c b/libatomic/config/nvptx/lock.c new file mode 100644 index 0000000..dea85a3 --- /dev/null +++ b/libatomic/config/nvptx/lock.c @@ -0,0 +1,56 @@ +/* Copyright (C) 2020 Free Software Foundation, Inc. + + This file is part of the GNU Atomic Library (libatomic). + + Libatomic 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 of the License, or + (at your option) any later version. + + Libatomic 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/>. */ + +/* Functions libat_lock_n/libat_unlock_n based on GOMP_atomic_start/end in + libgomp/atomic.c. */ + +#include "libatomic_i.h" + +static int atomic_lock; + +void +libat_lock_n (void *ptr __attribute__((unused)), + size_t n __attribute__((unused))) +{ + while (__sync_lock_test_and_set (&atomic_lock, 1)) + ; /* Spin. */ +} + +void +libat_unlock_n (void *ptr __attribute__((unused)), + size_t n __attribute__((unused))) +{ + __sync_lock_release (&atomic_lock); +} + +void +libat_lock_1 (void *ptr) +{ + libat_lock_n (ptr, 1); +} + +void +libat_unlock_1 (void *ptr) +{ + libat_unlock_n (ptr, 1); +} |