1 files changed, 123 insertions, 0 deletions
diff --git a/src/runtime/internal/atomic/atomic_s390x.go b/src/runtime/internal/atomic/atomic_s390x.go
new file mode 100644
index 0000000..9855bf0
--- /dev/null
+++ b/src/runtime/internal/atomic/atomic_s390x.go
@@ -0,0 +1,123 @@
+// 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.
+
+package atomic
+
+import "unsafe"
+
+// Export some functions via linkname to assembly in sync/atomic.
+//
+//go:linkname Load
+//go:linkname Loadp
+//go:linkname Load64
+
+//go:nosplit
+//go:noinline
+func Load(ptr *uint32) uint32 {
+	return *ptr
+}
+
+//go:nosplit
+//go:noinline
+func Loadp(ptr unsafe.Pointer) unsafe.Pointer {
+	return *(*unsafe.Pointer)(ptr)
+}
+
+//go:nosplit
+//go:noinline
+func Load8(ptr *uint8) uint8 {
+	return *ptr
+}
+
+//go:nosplit
+//go:noinline
+func Load64(ptr *uint64) uint64 {
+	return *ptr
+}
+
+//go:nosplit
+//go:noinline
+func LoadAcq(ptr *uint32) uint32 {
+	return *ptr
+}
+
+//go:nosplit
+//go:noinline
+func LoadAcq64(ptr *uint64) uint64 {
+	return *ptr
+}
+
+//go:nosplit
+//go:noinline
+func LoadAcquintptr(ptr *uintptr) uintptr {
+	return *ptr
+}
+
+//go:noescape
+func Store(ptr *uint32, val uint32)
+
+//go:noescape
+func Store8(ptr *uint8, val uint8)
+
+//go:noescape
+func Store64(ptr *uint64, val uint64)
+
+// NO go:noescape annotation; see atomic_pointer.go.
+func StorepNoWB(ptr unsafe.Pointer, val unsafe.Pointer)
+
+//go:nosplit
+//go:noinline
+func StoreRel(ptr *uint32, val uint32) {
+	*ptr = val
+}
+
+//go:nosplit
+//go:noinline
+func StoreRel64(ptr *uint64, val uint64) {
+	*ptr = val
+}
+
+//go:nosplit
+//go:noinline
+func StoreReluintptr(ptr *uintptr, val uintptr) {
+	*ptr = val
+}
+
+//go:noescape
+func And8(ptr *uint8, val uint8)
+
+//go:noescape
+func Or8(ptr *uint8, val uint8)
+
+// NOTE: Do not add atomicxor8 (XOR is not idempotent).
+
+//go:noescape
+func And(ptr *uint32, val uint32)
+
+//go:noescape
+func Or(ptr *uint32, val uint32)
+
+//go:noescape
+func Xadd(ptr *uint32, delta int32) uint32
+
+//go:noescape
+func Xadd64(ptr *uint64, delta int64) uint64
+
+//go:noescape
+func Xadduintptr(ptr *uintptr, delta uintptr) uintptr
+
+//go:noescape
+func Xchg(ptr *uint32, new uint32) uint32
+
+//go:noescape
+func Xchg64(ptr *uint64, new uint64) uint64
+
+//go:noescape
+func Xchguintptr(ptr *uintptr, new uintptr) uintptr
+
+//go:noescape
+func Cas64(ptr *uint64, old, new uint64) bool
+
+//go:noescape
+func CasRel(ptr *uint32, old, new uint32) bool