diff options
| author | Chris Robinson <[email protected]> | 2016-11-03 23:46:23 -0700 |
|---|---|---|
| committer | Chris Robinson <[email protected]> | 2016-11-03 23:47:50 -0700 |
| commit | 6a91d6a10ad90ec4923f94f36a428073d8cc4811 (patch) | |
| tree | b894ad5a19e37f27cce733986becd128dce0ee38 /include/atomic.h | |
| parent | 939d16d57c2e766828848ab6b10b5e943f2ba024 (diff) | |
Add support for 8-byte types on inline assembly ATOMIC_ADD/SUB
Diffstat (limited to 'include/atomic.h')
| -rw-r--r-- | include/atomic.h | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/include/atomic.h b/include/atomic.h index f3ee96b6..1dcf9ec5 100644 --- a/include/atomic.h +++ b/include/atomic.h @@ -86,14 +86,14 @@ enum almemory_order { /* Atomics using x86/x86-64 GCC inline assembly */ #elif defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) -#define WRAP_ADD(ret, dest, incr) __asm__ __volatile__( \ - "lock; xaddl %0,(%1)" \ +#define WRAP_ADD(S, ret, dest, incr) __asm__ __volatile__( \ + "lock; xadd"S" %0,(%1)" \ : "=r" (ret) \ : "r" (dest), "0" (incr) \ : "memory" \ ) -#define WRAP_SUB(ret, dest, decr) __asm__ __volatile__( \ - "lock; xaddl %0,(%1)" \ +#define WRAP_SUB(S, ret, dest, decr) __asm__ __volatile__( \ + "lock; xadd"S" %0,(%1)" \ : "=r" (ret) \ : "r" (dest), "0" (-(decr)) \ : "memory" \ @@ -137,14 +137,18 @@ enum almemory_order { (_val)->value = (_newval); \ } while(0) -#define ATOMIC_ADD(_val, _incr, ...) __extension__({ \ +#define ATOMIC_ADD(_val, _incr, ...) __extension__({ \ + static_assert(sizeof((_val)->value)==4 || sizeof((_val)->value)==8, "Unsupported size!"); \ __typeof((_val)->value) _r; \ - WRAP_ADD(_r, &(_val)->value, _incr); \ + if(sizeof((_val)->value) == 4) WRAP_ADD("l", _r, &(_val)->value, _incr); \ + else if(sizeof((_val)->value) == 8) WRAP_ADD("q", _r, &(_val)->value, _incr); \ _r; \ }) -#define ATOMIC_SUB(_val, _decr, ...) __extension__({ \ +#define ATOMIC_SUB(_val, _decr, ...) __extension__({ \ + static_assert(sizeof((_val)->value)==4 || sizeof((_val)->value)==8, "Unsupported size!"); \ __typeof((_val)->value) _r; \ - WRAP_SUB(_r, &(_val)->value, _decr); \ + if(sizeof((_val)->value) == 4) WRAP_SUB("l", _r, &(_val)->value, _decr); \ + else if(sizeof((_val)->value) == 8) WRAP_SUB("q", _r, &(_val)->value, _decr); \ _r; \ }) |