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Unified Diff: src/base/atomicops_internals_ppc_gcc.h

Issue 2438273002: Reland Update implementation of atomics with latest Chromium version but use compiler builtin atomi… (Closed)
Patch Set: fix memory order for release cmpxchg Created 4 years, 2 months ago
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Index: src/base/atomicops_internals_ppc_gcc.h
diff --git a/src/base/atomicops_internals_ppc_gcc.h b/src/base/atomicops_internals_ppc_gcc.h
deleted file mode 100644
index 0d16500d1ba7dfc9387c32bf7d8b7b32c7b55f1f..0000000000000000000000000000000000000000
--- a/src/base/atomicops_internals_ppc_gcc.h
+++ /dev/null
@@ -1,168 +0,0 @@
-// Copyright 2012 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// This file is an internal atomic implementation, use atomicops.h instead.
-//
-
-#ifndef V8_BASE_ATOMICOPS_INTERNALS_PPC_H_
-#define V8_BASE_ATOMICOPS_INTERNALS_PPC_H_
-
-namespace v8 {
-namespace base {
-
-inline Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32* ptr,
- Atomic32 old_value,
- Atomic32 new_value) {
- return (__sync_val_compare_and_swap(ptr, old_value, new_value));
-}
-
-inline Atomic32 NoBarrier_AtomicExchange(volatile Atomic32* ptr,
- Atomic32 new_value) {
- Atomic32 old_value;
- do {
- old_value = *ptr;
- } while (__sync_bool_compare_and_swap(ptr, old_value, new_value) == false);
- return old_value;
-}
-
-inline Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32* ptr,
- Atomic32 increment) {
- return Barrier_AtomicIncrement(ptr, increment);
-}
-
-inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr,
- Atomic32 increment) {
- for (;;) {
- Atomic32 old_value = *ptr;
- Atomic32 new_value = old_value + increment;
- if (__sync_bool_compare_and_swap(ptr, old_value, new_value)) {
- return new_value;
- // The exchange took place as expected.
- }
- // Otherwise, *ptr changed mid-loop and we need to retry.
- }
-}
-
-inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
- Atomic32 old_value, Atomic32 new_value) {
- return NoBarrier_CompareAndSwap(ptr, old_value, new_value);
-}
-
-inline Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr,
- Atomic32 old_value, Atomic32 new_value) {
- return NoBarrier_CompareAndSwap(ptr, old_value, new_value);
-}
-
-inline void NoBarrier_Store(volatile Atomic8* ptr, Atomic8 value) {
- *ptr = value;
-}
-
-inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
- *ptr = value;
-}
-
-inline void MemoryBarrier() {
- __asm__ __volatile__("sync" : : : "memory"); }
-
-inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) {
- *ptr = value;
- MemoryBarrier();
-}
-
-inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) {
- MemoryBarrier();
- *ptr = value;
-}
-
-inline Atomic8 NoBarrier_Load(volatile const Atomic8* ptr) { return *ptr; }
-
-inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) { return *ptr; }
-
-inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
- Atomic32 value = *ptr;
- MemoryBarrier();
- return value;
-}
-
-inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
- MemoryBarrier();
- return *ptr;
-}
-
-#ifdef V8_TARGET_ARCH_PPC64
-inline Atomic64 NoBarrier_CompareAndSwap(volatile Atomic64* ptr,
- Atomic64 old_value,
- Atomic64 new_value) {
- return (__sync_val_compare_and_swap(ptr, old_value, new_value));
-}
-
-inline Atomic64 NoBarrier_AtomicExchange(volatile Atomic64* ptr,
- Atomic64 new_value) {
- Atomic64 old_value;
- do {
- old_value = *ptr;
- } while (__sync_bool_compare_and_swap(ptr, old_value, new_value) == false);
- return old_value;
-}
-
-inline Atomic64 NoBarrier_AtomicIncrement(volatile Atomic64* ptr,
- Atomic64 increment) {
- return Barrier_AtomicIncrement(ptr, increment);
-}
-
-inline Atomic64 Barrier_AtomicIncrement(volatile Atomic64* ptr,
- Atomic64 increment) {
- for (;;) {
- Atomic64 old_value = *ptr;
- Atomic64 new_value = old_value + increment;
- if (__sync_bool_compare_and_swap(ptr, old_value, new_value)) {
- return new_value;
- // The exchange took place as expected.
- }
- // Otherwise, *ptr changed mid-loop and we need to retry.
- }
-}
-
-inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr,
- Atomic64 old_value, Atomic64 new_value) {
- return NoBarrier_CompareAndSwap(ptr, old_value, new_value);
-}
-
-inline Atomic64 Release_CompareAndSwap(volatile Atomic64* ptr,
- Atomic64 old_value, Atomic64 new_value) {
- return NoBarrier_CompareAndSwap(ptr, old_value, new_value);
-}
-
-inline void NoBarrier_Store(volatile Atomic64* ptr, Atomic64 value) {
- *ptr = value;
-}
-
-inline void Acquire_Store(volatile Atomic64* ptr, Atomic64 value) {
- *ptr = value;
- MemoryBarrier();
-}
-
-inline void Release_Store(volatile Atomic64* ptr, Atomic64 value) {
- MemoryBarrier();
- *ptr = value;
-}
-
-inline Atomic64 NoBarrier_Load(volatile const Atomic64* ptr) { return *ptr; }
-
-inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) {
- Atomic64 value = *ptr;
- MemoryBarrier();
- return value;
-}
-
-inline Atomic64 Release_Load(volatile const Atomic64* ptr) {
- MemoryBarrier();
- return *ptr;
-}
-
-#endif
-} // namespace base
-} // namespace v8
-
-#endif // V8_BASE_ATOMICOPS_INTERNALS_PPC_GCC_H_
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