diff options
Diffstat (limited to 'src/sync/atomic/64bit_arm.go')
-rw-r--r-- | src/sync/atomic/64bit_arm.go | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/sync/atomic/64bit_arm.go b/src/sync/atomic/64bit_arm.go new file mode 100644 index 000000000..b98e60827 --- /dev/null +++ b/src/sync/atomic/64bit_arm.go @@ -0,0 +1,58 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package atomic + +func loadUint64(addr *uint64) (val uint64) { + for { + val = *addr + if CompareAndSwapUint64(addr, val, val) { + break + } + } + return +} + +func storeUint64(addr *uint64, val uint64) { + for { + old := *addr + if CompareAndSwapUint64(addr, old, val) { + break + } + } + return +} + +func addUint64(val *uint64, delta uint64) (new uint64) { + for { + old := *val + new = old + delta + if CompareAndSwapUint64(val, old, new) { + break + } + } + return +} + +func swapUint64(addr *uint64, new uint64) (old uint64) { + for { + old = *addr + if CompareAndSwapUint64(addr, old, new) { + break + } + } + return +} + +// Additional ARM-specific assembly routines. +// Declaration here to give assembly routines correct stack maps for arguments. +func armCompareAndSwapUint32(addr *uint32, old, new uint32) (swapped bool) +func armCompareAndSwapUint64(addr *uint64, old, new uint64) (swapped bool) +func generalCAS64(addr *uint64, old, new uint64) (swapped bool) +func armAddUint32(addr *uint32, delta uint32) (new uint32) +func armAddUint64(addr *uint64, delta uint64) (new uint64) +func armSwapUint32(addr *uint32, new uint32) (old uint32) +func armSwapUint64(addr *uint64, new uint64) (old uint64) +func armLoadUint64(addr *uint64) (val uint64) +func armStoreUint64(addr *uint64, val uint64) |