1 files changed, 237 insertions, 0 deletions
diff --git a/libgo/go/runtime/internal/atomic/atomic.c b/libgo/go/runtime/internal/atomic/atomic.c
new file mode 100644
index 00000000000..3393fbef44e
--- /dev/null
+++ b/libgo/go/runtime/internal/atomic/atomic.c
@@ -0,0 +1,237 @@
+// 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.
+
+#include <stdint.h>
+
+#include "runtime.h"
+
+uint32_t Load (uint32_t *ptr)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Load")
+  __attribute__ ((no_split_stack));
+
+uint32_t
+Load (uint32_t *ptr)
+{
+  return __atomic_load_n (ptr, __ATOMIC_ACQUIRE);
+}
+
+void *Loadp (void *ptr)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Loadp")
+  __attribute__ ((no_split_stack));
+
+void *
+Loadp (void *ptr)
+{
+  return __atomic_load_n ((void **) ptr, __ATOMIC_ACQUIRE);
+}
+
+uint64_t Load64 (uint64_t *ptr)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Load64")
+  __attribute__ ((no_split_stack));
+
+uint64_t
+Load64 (uint64_t *ptr)
+{
+  return __atomic_load_n (ptr, __ATOMIC_ACQUIRE);
+}
+
+uintptr_t Loaduintptr (uintptr_t *ptr)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Loaduintptr")
+  __attribute__ ((no_split_stack));
+
+uintptr_t
+Loaduintptr (uintptr_t *ptr)
+{
+  return __atomic_load_n (ptr, __ATOMIC_ACQUIRE);
+}
+
+uintgo Loaduint (uintgo *ptr)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Loaduint")
+  __attribute__ ((no_split_stack));
+
+uintgo
+Loaduint (uintgo *ptr)
+{
+  return __atomic_load_n (ptr, __ATOMIC_ACQUIRE);
+}
+
+int64_t Loadint64 (int64_t *ptr)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Loadint64")
+  __attribute__ ((no_split_stack));
+
+int64_t
+Loadint64 (int64_t *ptr)
+{
+  return __atomic_load_n (ptr, __ATOMIC_ACQUIRE);
+}
+
+uint32_t Xadd (uint32_t *ptr, int32_t delta)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Xadd")
+  __attribute__ ((no_split_stack));
+
+uint32_t
+Xadd (uint32_t *ptr, int32_t delta)
+{
+  return __atomic_add_fetch (ptr, (uint32_t) delta, __ATOMIC_SEQ_CST);
+}
+
+uint64_t Xadd64 (uint64_t *ptr, int64_t delta)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Xadd64")
+  __attribute__ ((no_split_stack));
+
+uint64_t
+Xadd64 (uint64_t *ptr, int64_t delta)
+{
+  return __atomic_add_fetch (ptr, (uint64_t) delta, __ATOMIC_SEQ_CST);
+}
+
+uintptr_t Xadduintptr (uintptr_t *ptr, uintptr_t delta)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Xadduintptr")
+  __attribute__ ((no_split_stack));
+
+uintptr_t
+Xadduintptr (uintptr_t *ptr, uintptr_t delta)
+{
+  return __atomic_add_fetch (ptr, delta, __ATOMIC_SEQ_CST);
+}
+
+int64_t Xaddint64 (int64_t *ptr, int64_t delta)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Xaddint64")
+  __attribute__ ((no_split_stack));
+
+int64_t
+Xaddint64 (int64_t *ptr, int64_t delta)
+{
+  return __atomic_add_fetch (ptr, delta, __ATOMIC_SEQ_CST);
+}
+
+uint32_t Xchg (uint32_t *ptr, uint32_t new)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Xchg")
+  __attribute__ ((no_split_stack));
+
+uint32_t
+Xchg (uint32_t *ptr, uint32_t new)
+{
+  return __atomic_exchange_n (ptr, new, __ATOMIC_SEQ_CST);
+}
+
+uint64_t Xchg64 (uint64_t *ptr, uint64_t new)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Xchg64")
+  __attribute__ ((no_split_stack));
+
+uint64_t
+Xchg64 (uint64_t *ptr, uint64_t new)
+{
+  return __atomic_exchange_n (ptr, new, __ATOMIC_SEQ_CST);
+}
+
+uintptr_t Xchguintptr (uintptr_t *ptr, uintptr_t new)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Xchguintptr")
+  __attribute__ ((no_split_stack));
+
+uintptr_t
+Xchguintptr (uintptr_t *ptr, uintptr_t new)
+{
+  return __atomic_exchange_n (ptr, new, __ATOMIC_SEQ_CST);
+}
+
+void And8 (uint8_t *ptr, uint8_t val)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.And8")
+  __attribute__ ((no_split_stack));
+
+void
+And8 (uint8_t *ptr, uint8_t val)
+{
+  __atomic_and_fetch (ptr, val, __ATOMIC_SEQ_CST);
+}
+
+void Or8 (uint8_t *ptr, uint8_t val)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Or8")
+  __attribute__ ((no_split_stack));
+
+void
+Or8 (uint8_t *ptr, uint8_t val)
+{
+  __atomic_or_fetch (ptr, val, __ATOMIC_SEQ_CST);
+}
+
+_Bool Cas (uint32_t *ptr, uint32_t old, uint32_t new)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Cas")
+  __attribute__ ((no_split_stack));
+
+_Bool
+Cas (uint32_t *ptr, uint32_t old, uint32_t new)
+{
+  return __atomic_compare_exchange_n (ptr, &old, new, false, __ATOMIC_SEQ_CST, __ATOMIC_RELAXED);
+}
+
+_Bool Cas64 (uint64_t *ptr, uint64_t old, uint64_t new)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Cas64")
+  __attribute__ ((no_split_stack));
+
+_Bool
+Cas64 (uint64_t *ptr, uint64_t old, uint64_t new)
+{
+  return __atomic_compare_exchange_n (ptr, &old, new, false, __ATOMIC_SEQ_CST, __ATOMIC_RELAXED);
+}
+
+_Bool Casp1 (void **ptr, void *old, void *new)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Casp1")
+  __attribute__ ((no_split_stack));
+
+_Bool
+Casp1 (void **ptr, void *old, void *new)
+{
+  return __atomic_compare_exchange_n (ptr, &old, new, false, __ATOMIC_SEQ_CST, __ATOMIC_RELAXED);
+}
+
+_Bool Casuintptr (uintptr_t *ptr, uintptr_t old, uintptr_t new)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Casuintptr")
+  __attribute__ ((no_split_stack));
+
+_Bool
+Casuintptr (uintptr_t *ptr, uintptr_t old, uintptr_t new)
+{
+  return __atomic_compare_exchange_n (ptr, &old, new, false, __ATOMIC_SEQ_CST, __ATOMIC_RELAXED);
+}
+
+void Store (uint32_t *ptr, uint32_t val)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Store")
+  __attribute__ ((no_split_stack));
+
+void
+Store (uint32_t *ptr, uint32_t val)
+{
+  __atomic_store_n (ptr, val, __ATOMIC_SEQ_CST);
+}
+
+void Store64 (uint64_t *ptr, uint64_t val)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Store64")
+  __attribute__ ((no_split_stack));
+
+void
+Store64 (uint64_t *ptr, uint64_t val)
+{
+  __atomic_store_n (ptr, val, __ATOMIC_SEQ_CST);
+}
+
+void Storeuintptr (uintptr_t *ptr, uintptr_t val)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.Storeuintptr")
+  __attribute__ ((no_split_stack));
+
+void
+Storeuintptr (uintptr_t *ptr, uintptr_t val)
+{
+  __atomic_store_n (ptr, val, __ATOMIC_SEQ_CST);
+}
+
+void StorepNoWB (void *ptr, void *val)
+  __asm__ (GOSYM_PREFIX "runtime_internal_atomic.StorepNoWB")
+  __attribute__ ((no_split_stack));
+
+void
+StorepNoWB (void *ptr, void *val)
+{
+  __atomic_store_n ((void**) ptr, val, __ATOMIC_SEQ_CST);
+}