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Diffstat (limited to 'libc/private/bionic_atomic_gcc_builtin.h')
-rw-r--r--libc/private/bionic_atomic_gcc_builtin.h50
1 files changed, 0 insertions, 50 deletions
diff --git a/libc/private/bionic_atomic_gcc_builtin.h b/libc/private/bionic_atomic_gcc_builtin.h
deleted file mode 100644
index 70eb861fe..000000000
--- a/libc/private/bionic_atomic_gcc_builtin.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * Copyright (C) 2011 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#ifndef BIONIC_ATOMIC_GCC_BUILTIN_H
-#define BIONIC_ATOMIC_GCC_BUILTIN_H
-
-/*
- * This header file is used by default if we don't have optimized atomic
- * routines for a given platform. See bionic_atomic_arm.h and
- * bionic_atomic_x86.h for examples.
- *
- * Note that the GCC builtins include barriers that aren't present in
- * the architecture-specific assembler versions.
- */
-
-__ATOMIC_INLINE__ void __bionic_memory_barrier() {
- __sync_synchronize();
-}
-
-__ATOMIC_INLINE__ int __bionic_cmpxchg(int32_t old_value, int32_t new_value, volatile int32_t* ptr) {
- /* We must return 0 on success. */
- return __sync_val_compare_and_swap(ptr, old_value, new_value) != old_value;
-}
-
-__ATOMIC_INLINE__ int32_t __bionic_swap(int32_t new_value, volatile int32_t* ptr) {
- int32_t old_value;
- do {
- old_value = *ptr;
- } while (__sync_val_compare_and_swap(ptr, old_value, new_value) != old_value);
- return old_value;
-}
-
-__ATOMIC_INLINE__ int32_t __bionic_atomic_dec(volatile int32_t* ptr) {
- /* We must return the old value. */
- return __sync_fetch_and_add(ptr, -1);
-}
-
-#endif /* BIONIC_ATOMIC_GCC_BUILTIN_H */