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07ff596404
As a follow up to an earlier change[1] to add ARMv8+LSE instructions in
the compiler generated atomic intrinsics, make the same change in the
runtime library. Since not all ARMv8 systems support LSE instructions,
they are protected by a feature-flag branch.
[1]: golang.org/cl/234217 commit: ecc3f5112e
Change-Id: I0e2fb22e78d5eddb6547863667a8865946679a00
Reviewed-on: https://go-review.googlesource.com/c/go/+/310591
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Heschi Kreinick <heschi@google.com>
95 lines
1.8 KiB
Go
95 lines
1.8 KiB
Go
// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build arm64
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// +build arm64
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package atomic
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import (
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"unsafe"
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"internal/cpu"
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)
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const (
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offsetARM64HasATOMICS = unsafe.Offsetof(cpu.ARM64.HasATOMICS)
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)
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//go:noescape
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func Xadd(ptr *uint32, delta int32) uint32
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//go:noescape
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func Xadd64(ptr *uint64, delta int64) uint64
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//go:noescape
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func Xadduintptr(ptr *uintptr, delta uintptr) uintptr
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//go:noescape
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func Xchg(ptr *uint32, new uint32) uint32
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//go:noescape
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func Xchg64(ptr *uint64, new uint64) uint64
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//go:noescape
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func Xchguintptr(ptr *uintptr, new uintptr) uintptr
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//go:noescape
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func Load(ptr *uint32) uint32
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//go:noescape
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func Load8(ptr *uint8) uint8
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//go:noescape
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func Load64(ptr *uint64) uint64
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// NO go:noescape annotation; *ptr escapes if result escapes (#31525)
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func Loadp(ptr unsafe.Pointer) unsafe.Pointer
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//go:noescape
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func LoadAcq(addr *uint32) uint32
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//go:noescape
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func LoadAcq64(ptr *uint64) uint64
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//go:noescape
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func LoadAcquintptr(ptr *uintptr) uintptr
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//go:noescape
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func Or8(ptr *uint8, val uint8)
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//go:noescape
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func And8(ptr *uint8, val uint8)
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//go:noescape
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func And(ptr *uint32, val uint32)
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//go:noescape
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func Or(ptr *uint32, val uint32)
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//go:noescape
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func Cas64(ptr *uint64, old, new uint64) bool
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//go:noescape
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func CasRel(ptr *uint32, old, new uint32) bool
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//go:noescape
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func Store(ptr *uint32, val uint32)
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//go:noescape
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func Store8(ptr *uint8, val uint8)
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//go:noescape
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func Store64(ptr *uint64, val uint64)
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// NO go:noescape annotation; see atomic_pointer.go.
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func StorepNoWB(ptr unsafe.Pointer, val unsafe.Pointer)
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//go:noescape
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func StoreRel(ptr *uint32, val uint32)
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//go:noescape
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func StoreRel64(ptr *uint64, val uint64)
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//go:noescape
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func StoreReluintptr(ptr *uintptr, val uintptr)
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