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/* atomic.c -- implement atomic routines for Go.
Copyright 2011 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"
int32_t SwapInt32 (int32_t *, int32_t)
__asm__ (GOSYM_PREFIX "sync_atomic.SwapInt32")
__attribute__ ((no_split_stack));
int32_t
SwapInt32 (int32_t *addr, int32_t new)
{
return __atomic_exchange_n (addr, new, __ATOMIC_SEQ_CST);
}
int64_t SwapInt64 (int64_t *, int64_t)
__asm__ (GOSYM_PREFIX "sync_atomic.SwapInt64")
__attribute__ ((no_split_stack));
int64_t
SwapInt64 (int64_t *addr, int64_t new)
{
if (((uintptr_t) addr & 7) != 0)
addr = NULL;
return __atomic_exchange_n (addr, new, __ATOMIC_SEQ_CST);
}
uint32_t SwapUint32 (uint32_t *, uint32_t)
__asm__ (GOSYM_PREFIX "sync_atomic.SwapUint32")
__attribute__ ((no_split_stack));
uint32_t
SwapUint32 (uint32_t *addr, uint32_t new)
{
return __atomic_exchange_n (addr, new, __ATOMIC_SEQ_CST);
}
uint64_t SwapUint64 (uint64_t *, uint64_t)
__asm__ (GOSYM_PREFIX "sync_atomic.SwapUint64")
__attribute__ ((no_split_stack));
uint64_t
SwapUint64 (uint64_t *addr, uint64_t new)
{
if (((uintptr_t) addr & 7) != 0)
addr = NULL;
return __atomic_exchange_n (addr, new, __ATOMIC_SEQ_CST);
}
uintptr_t SwapUintptr (uintptr_t *, uintptr_t)
__asm__ (GOSYM_PREFIX "sync_atomic.SwapUintptr")
__attribute__ ((no_split_stack));
uintptr_t
SwapUintptr (uintptr_t *addr, uintptr_t new)
{
return __atomic_exchange_n (addr, new, __ATOMIC_SEQ_CST);
}
void *SwapPointer (void **, void *)
__asm__ (GOSYM_PREFIX "sync_atomic.SwapPointer")
__attribute__ ((no_split_stack));
void *
SwapPointer (void **addr, void *new)
{
return __atomic_exchange_n (addr, new, __ATOMIC_SEQ_CST);
}
_Bool CompareAndSwapInt32 (int32_t *, int32_t, int32_t)
__asm__ (GOSYM_PREFIX "sync_atomic.CompareAndSwapInt32")
__attribute__ ((no_split_stack));
_Bool
CompareAndSwapInt32 (int32_t *val, int32_t old, int32_t new)
{
return __sync_bool_compare_and_swap (val, old, new);
}
_Bool CompareAndSwapInt64 (int64_t *, int64_t, int64_t)
__asm__ (GOSYM_PREFIX "sync_atomic.CompareAndSwapInt64")
__attribute__ ((no_split_stack));
_Bool
CompareAndSwapInt64 (int64_t *val, int64_t old, int64_t new)
{
if (((uintptr_t) val & 7) != 0)
val = NULL;
return __sync_bool_compare_and_swap (val, old, new);
}
_Bool CompareAndSwapUint32 (uint32_t *, uint32_t, uint32_t)
__asm__ (GOSYM_PREFIX "sync_atomic.CompareAndSwapUint32")
__attribute__ ((no_split_stack));
_Bool
CompareAndSwapUint32 (uint32_t *val, uint32_t old, uint32_t new)
{
return __sync_bool_compare_and_swap (val, old, new);
}
_Bool CompareAndSwapUint64 (uint64_t *, uint64_t, uint64_t)
__asm__ (GOSYM_PREFIX "sync_atomic.CompareAndSwapUint64")
__attribute__ ((no_split_stack));
_Bool
CompareAndSwapUint64 (uint64_t *val, uint64_t old, uint64_t new)
{
if (((uintptr_t) val & 7) != 0)
val = NULL;
return __sync_bool_compare_and_swap (val, old, new);
}
_Bool CompareAndSwapUintptr (uintptr_t *, uintptr_t, uintptr_t)
__asm__ (GOSYM_PREFIX "sync_atomic.CompareAndSwapUintptr")
__attribute__ ((no_split_stack));
_Bool
CompareAndSwapUintptr (uintptr_t *val, uintptr_t old, uintptr_t new)
{
return __sync_bool_compare_and_swap (val, old, new);
}
_Bool CompareAndSwapPointer (void **, void *, void *)
__asm__ (GOSYM_PREFIX "sync_atomic.CompareAndSwapPointer")
__attribute__ ((no_split_stack));
_Bool
CompareAndSwapPointer (void **val, void *old, void *new)
{
return __sync_bool_compare_and_swap (val, old, new);
}
int32_t AddInt32 (int32_t *, int32_t)
__asm__ (GOSYM_PREFIX "sync_atomic.AddInt32")
__attribute__ ((no_split_stack));
int32_t
AddInt32 (int32_t *val, int32_t delta)
{
return __sync_add_and_fetch (val, delta);
}
uint32_t AddUint32 (uint32_t *, uint32_t)
__asm__ (GOSYM_PREFIX "sync_atomic.AddUint32")
__attribute__ ((no_split_stack));
uint32_t
AddUint32 (uint32_t *val, uint32_t delta)
{
return __sync_add_and_fetch (val, delta);
}
int64_t AddInt64 (int64_t *, int64_t)
__asm__ (GOSYM_PREFIX "sync_atomic.AddInt64")
__attribute__ ((no_split_stack));
int64_t
AddInt64 (int64_t *val, int64_t delta)
{
if (((uintptr_t) val & 7) != 0)
val = NULL;
return __sync_add_and_fetch (val, delta);
}
uint64_t AddUint64 (uint64_t *, uint64_t)
__asm__ (GOSYM_PREFIX "sync_atomic.AddUint64")
__attribute__ ((no_split_stack));
uint64_t
AddUint64 (uint64_t *val, uint64_t delta)
{
if (((uintptr_t) val & 7) != 0)
val = NULL;
return __sync_add_and_fetch (val, delta);
}
uintptr_t AddUintptr (uintptr_t *, uintptr_t)
__asm__ (GOSYM_PREFIX "sync_atomic.AddUintptr")
__attribute__ ((no_split_stack));
uintptr_t
AddUintptr (uintptr_t *val, uintptr_t delta)
{
return __sync_add_and_fetch (val, delta);
}
int32_t LoadInt32 (int32_t *addr)
__asm__ (GOSYM_PREFIX "sync_atomic.LoadInt32")
__attribute__ ((no_split_stack));
int32_t
LoadInt32 (int32_t *addr)
{
int32_t v;
v = *addr;
while (! __sync_bool_compare_and_swap (addr, v, v))
v = *addr;
return v;
}
int64_t LoadInt64 (int64_t *addr)
__asm__ (GOSYM_PREFIX "sync_atomic.LoadInt64")
__attribute__ ((no_split_stack));
int64_t
LoadInt64 (int64_t *addr)
{
int64_t v;
if (((uintptr_t) addr & 7) != 0)
addr = NULL;
v = *addr;
while (! __sync_bool_compare_and_swap (addr, v, v))
v = *addr;
return v;
}
uint32_t LoadUint32 (uint32_t *addr)
__asm__ (GOSYM_PREFIX "sync_atomic.LoadUint32")
__attribute__ ((no_split_stack));
uint32_t
LoadUint32 (uint32_t *addr)
{
uint32_t v;
v = *addr;
while (! __sync_bool_compare_and_swap (addr, v, v))
v = *addr;
return v;
}
uint64_t LoadUint64 (uint64_t *addr)
__asm__ (GOSYM_PREFIX "sync_atomic.LoadUint64")
__attribute__ ((no_split_stack));
uint64_t
LoadUint64 (uint64_t *addr)
{
uint64_t v;
if (((uintptr_t) addr & 7) != 0)
addr = NULL;
v = *addr;
while (! __sync_bool_compare_and_swap (addr, v, v))
v = *addr;
return v;
}
uintptr_t LoadUintptr (uintptr_t *addr)
__asm__ (GOSYM_PREFIX "sync_atomic.LoadUintptr")
__attribute__ ((no_split_stack));
uintptr_t
LoadUintptr (uintptr_t *addr)
{
uintptr_t v;
v = *addr;
while (! __sync_bool_compare_and_swap (addr, v, v))
v = *addr;
return v;
}
void *LoadPointer (void **addr)
__asm__ (GOSYM_PREFIX "sync_atomic.LoadPointer")
__attribute__ ((no_split_stack));
void *
LoadPointer (void **addr)
{
void *v;
v = *addr;
while (! __sync_bool_compare_and_swap (addr, v, v))
v = *addr;
return v;
}
void StoreInt32 (int32_t *addr, int32_t val)
__asm__ (GOSYM_PREFIX "sync_atomic.StoreInt32")
__attribute__ ((no_split_stack));
void
StoreInt32 (int32_t *addr, int32_t val)
{
int32_t v;
v = *addr;
while (! __sync_bool_compare_and_swap (addr, v, val))
v = *addr;
}
void StoreInt64 (int64_t *addr, int64_t val)
__asm__ (GOSYM_PREFIX "sync_atomic.StoreInt64")
__attribute__ ((no_split_stack));
void
StoreInt64 (int64_t *addr, int64_t val)
{
int64_t v;
if (((uintptr_t) addr & 7) != 0)
addr = NULL;
v = *addr;
while (! __sync_bool_compare_and_swap (addr, v, val))
v = *addr;
}
void StoreUint32 (uint32_t *addr, uint32_t val)
__asm__ (GOSYM_PREFIX "sync_atomic.StoreUint32")
__attribute__ ((no_split_stack));
void
StoreUint32 (uint32_t *addr, uint32_t val)
{
uint32_t v;
v = *addr;
while (! __sync_bool_compare_and_swap (addr, v, val))
v = *addr;
}
void StoreUint64 (uint64_t *addr, uint64_t val)
__asm__ (GOSYM_PREFIX "sync_atomic.StoreUint64")
__attribute__ ((no_split_stack));
void
StoreUint64 (uint64_t *addr, uint64_t val)
{
uint64_t v;
if (((uintptr_t) addr & 7) != 0)
addr = NULL;
v = *addr;
while (! __sync_bool_compare_and_swap (addr, v, val))
v = *addr;
}
void StoreUintptr (uintptr_t *addr, uintptr_t val)
__asm__ (GOSYM_PREFIX "sync_atomic.StoreUintptr")
__attribute__ ((no_split_stack));
void
StoreUintptr (uintptr_t *addr, uintptr_t val)
{
uintptr_t v;
v = *addr;
while (! __sync_bool_compare_and_swap (addr, v, val))
v = *addr;
}
void StorePointer (void **addr, void *val)
__asm__ (GOSYM_PREFIX "sync_atomic.StorePointer")
__attribute__ ((no_split_stack));
void
StorePointer (void **addr, void *val)
{
void *v;
v = *addr;
while (! __sync_bool_compare_and_swap (addr, v, val))
v = *addr;
}
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