1 files changed, 0 insertions, 165 deletions
diff --git a/src/runtime/atomic_arm.go b/src/runtime/atomic_arm.go
deleted file mode 100644
index 0c53b102c1..0000000000
--- a/src/runtime/atomic_arm.go
+++ /dev/null
@@ -1,165 +0,0 @@
-// Copyright 2009 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 runtime
-
-import "unsafe"
-
-var locktab [57]struct {
-	l   mutex
-	pad [_CacheLineSize - unsafe.Sizeof(mutex{})]byte
-}
-
-func addrLock(addr *uint64) *mutex {
-	return &locktab[(uintptr(unsafe.Pointer(addr))>>3)%uintptr(len(locktab))].l
-}
-
-// Atomic add and return new value.
-//go:nosplit
-func xadd(val *uint32, delta int32) uint32 {
-	for {
-		oval := *val
-		nval := oval + uint32(delta)
-		if cas(val, oval, nval) {
-			return nval
-		}
-	}
-}
-
-//go:noescape
-//go:linkname xadduintptr runtime.xadd
-func xadduintptr(ptr *uintptr, delta uintptr) uintptr
-
-//go:nosplit
-func xchg(addr *uint32, v uint32) uint32 {
-	for {
-		old := *addr
-		if cas(addr, old, v) {
-			return old
-		}
-	}
-}
-
-//go:nosplit
-func xchguintptr(addr *uintptr, v uintptr) uintptr {
-	return uintptr(xchg((*uint32)(unsafe.Pointer(addr)), uint32(v)))
-}
-
-//go:nosplit
-func atomicload(addr *uint32) uint32 {
-	return xadd(addr, 0)
-}
-
-//go:nosplit
-func atomicloadp(addr unsafe.Pointer) unsafe.Pointer {
-	return unsafe.Pointer(uintptr(xadd((*uint32)(addr), 0)))
-}
-
-//go:nosplit
-func atomicstorep1(addr unsafe.Pointer, v unsafe.Pointer) {
-	for {
-		old := *(*unsafe.Pointer)(addr)
-		if casp1((*unsafe.Pointer)(addr), old, v) {
-			return
-		}
-	}
-}
-
-//go:nosplit
-func atomicstore(addr *uint32, v uint32) {
-	for {
-		old := *addr
-		if cas(addr, old, v) {
-			return
-		}
-	}
-}
-
-//go:nosplit
-func cas64(addr *uint64, old, new uint64) bool {
-	var ok bool
-	systemstack(func() {
-		lock(addrLock(addr))
-		if *addr == old {
-			*addr = new
-			ok = true
-		}
-		unlock(addrLock(addr))
-	})
-	return ok
-}
-
-//go:nosplit
-func xadd64(addr *uint64, delta int64) uint64 {
-	var r uint64
-	systemstack(func() {
-		lock(addrLock(addr))
-		r = *addr + uint64(delta)
-		*addr = r
-		unlock(addrLock(addr))
-	})
-	return r
-}
-
-//go:nosplit
-func xchg64(addr *uint64, v uint64) uint64 {
-	var r uint64
-	systemstack(func() {
-		lock(addrLock(addr))
-		r = *addr
-		*addr = v
-		unlock(addrLock(addr))
-	})
-	return r
-}
-
-//go:nosplit
-func atomicload64(addr *uint64) uint64 {
-	var r uint64
-	systemstack(func() {
-		lock(addrLock(addr))
-		r = *addr
-		unlock(addrLock(addr))
-	})
-	return r
-}
-
-//go:nosplit
-func atomicstore64(addr *uint64, v uint64) {
-	systemstack(func() {
-		lock(addrLock(addr))
-		*addr = v
-		unlock(addrLock(addr))
-	})
-}
-
-//go:nosplit
-func atomicor8(addr *uint8, v uint8) {
-	// Align down to 4 bytes and use 32-bit CAS.
-	uaddr := uintptr(unsafe.Pointer(addr))
-	addr32 := (*uint32)(unsafe.Pointer(uaddr &^ 3))
-	word := uint32(v) << ((uaddr & 3) * 8) // little endian
-	for {
-		old := *addr32
-		if cas(addr32, old, old|word) {
-			return
-		}
-	}
-}
-
-//go:nosplit
-func atomicand8(addr *uint8, v uint8) {
-	// Align down to 4 bytes and use 32-bit CAS.
-	uaddr := uintptr(unsafe.Pointer(addr))
-	addr32 := (*uint32)(unsafe.Pointer(uaddr &^ 3))
-	word := uint32(v) << ((uaddr & 3) * 8)    // little endian
-	mask := uint32(0xFF) << ((uaddr & 3) * 8) // little endian
-	word |= ^mask
-	for {
-		old := *addr32
-		if cas(addr32, old, old&word) {
-			return
-		}
-	}
-}