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Name	Size	Permission
asm_386.s	5.27 KB	-rw-r--r--
asm_amd64.s	3.89 KB	-rw-r--r--
asm_arm.s	5.22 KB	-rw-r--r--
asm_arm64.s	1.63 KB	-rw-r--r--
asm_mips64x.s	3.96 KB	-rw-r--r--
asm_mipsx.s	2.88 KB	-rw-r--r--
asm_ppc64x.s	4.48 KB	-rw-r--r--
asm_s390x.s	4.79 KB	-rw-r--r--
atomic_386.go	1.62 KB	-rw-r--r--
atomic_amd64.go	1.73 KB	-rw-r--r--
atomic_arm.go	4.31 KB	-rw-r--r--
atomic_arm64.go	1.38 KB	-rw-r--r--
atomic_arm64.s	3.21 KB	-rw-r--r--
atomic_mips64x.go	1.45 KB	-rw-r--r--
atomic_mips64x.s	1.06 KB	-rw-r--r--
atomic_mipsx.go	2.49 KB	-rw-r--r--
atomic_mipsx.s	482 B	-rw-r--r--
atomic_ppc64x.go	1.45 KB	-rw-r--r--
atomic_ppc64x.s	1.34 KB	-rw-r--r--
atomic_riscv64.go	1.37 KB	-rw-r--r--
atomic_riscv64.s	5.48 KB	-rw-r--r--
atomic_s390x.go	1.68 KB	-rw-r--r--
atomic_test.go	5.1 KB	-rw-r--r--
atomic_wasm.go	3.69 KB	-rw-r--r--
bench_test.go	1.78 KB	-rw-r--r--
stubs.go	795 B	-rw-r--r--
sys_linux_arm.s	3.14 KB	-rw-r--r--
sys_nonlinux_arm.s	1.34 KB	-rw-r--r--

Code Editor : atomic_mipsx.go

// Copyright 2016 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.

// +build mips mipsle

// Export some functions via linkname to assembly in sync/atomic.
//go:linkname Xadd64
//go:linkname Xchg64
//go:linkname Cas64
//go:linkname Load64
//go:linkname Store64

package atomic

import (
	"internal/cpu"
	"unsafe"
)

// TODO implement lock striping
var lock struct {
	state uint32
	pad   [cpu.CacheLinePadSize - 4]byte
}

//go:noescape
func spinLock(state *uint32)

//go:noescape
func spinUnlock(state *uint32)

//go:nosplit
func lockAndCheck(addr *uint64) {
	// ensure 8-byte alignment
	if uintptr(unsafe.Pointer(addr))&7 != 0 {
		addr = nil
	}
	// force dereference before taking lock
	_ = *addr

spinLock(&lock.state)
}

//go:nosplit
func unlock() {
	spinUnlock(&lock.state)
}

//go:nosplit
func unlockNoFence() {
	lock.state = 0
}

//go:nosplit
func Xadd64(addr *uint64, delta int64) (new uint64) {
	lockAndCheck(addr)

new = *addr + uint64(delta)
	*addr = new

unlock()
	return
}

//go:nosplit
func Xchg64(addr *uint64, new uint64) (old uint64) {
	lockAndCheck(addr)

old = *addr
	*addr = new

unlock()
	return
}

//go:nosplit
func Cas64(addr *uint64, old, new uint64) (swapped bool) {
	lockAndCheck(addr)

if (*addr) == old {
		*addr = new
		unlock()
		return true
	}

unlockNoFence()
	return false
}

//go:nosplit
func Load64(addr *uint64) (val uint64) {
	lockAndCheck(addr)

val = *addr

unlock()
	return
}

//go:nosplit
func Store64(addr *uint64, val uint64) {
	lockAndCheck(addr)

*addr = val

unlock()
	return
}

//go:noescape
func Xadd(ptr *uint32, delta int32) uint32

//go:noescape
func Xadduintptr(ptr *uintptr, delta uintptr) uintptr

//go:noescape
func Xchg(ptr *uint32, new uint32) uint32

//go:noescape
func Xchguintptr(ptr *uintptr, new uintptr) uintptr

//go:noescape
func Load(ptr *uint32) uint32

//go:noescape
func Load8(ptr *uint8) uint8

// NO go:noescape annotation; *ptr escapes if result escapes (#31525)
func Loadp(ptr unsafe.Pointer) unsafe.Pointer

//go:noescape
func LoadAcq(ptr *uint32) uint32

//go:noescape
func And8(ptr *uint8, val uint8)

//go:noescape
func Or8(ptr *uint8, val uint8)

//go:noescape
func Store(ptr *uint32, val uint32)

//go:noescape
func Store8(ptr *uint8, val uint8)

// NO go:noescape annotation; see atomic_pointer.go.
func StorepNoWB(ptr unsafe.Pointer, val unsafe.Pointer)

//go:noescape
func StoreRel(ptr *uint32, val uint32)

//go:noescape
func CasRel(addr *uint32, old, new uint32) bool

${this.title}

Code Editor : atomic_mipsx.go