dcodeIO/webassembly

_Noreturn void abort (void);

#define a_ctz_l a_ctz_l
static inline int a_ctz_l(unsigned long x)
{
    if (x == 0)
        return 32;
    int nTrailingZeros = 0;
    while(!(x&1))
    {
        ++nTrailingZeros;
        x >>= 1;
    }
    return nTrailingZeros;
}

#define a_ctz_64 a_ctz_64
static inline int a_ctz_64(uint64_t x)
{
    uint32_t lo = (uint32_t)x;
    if (lo == 0)
        return a_ctz_l((unsigned long)(x >> 32)) + 32;
    else
        return a_ctz_l((unsigned long)lo);
}

#define a_and_64 a_and_64
static inline void a_and_64(volatile uint64_t *p, uint64_t v)
{
    *p &= v;
}

#define a_or_64 a_or_64
static inline void a_or_64(volatile uint64_t *p, uint64_t v)
{
    *p |= v;
}

#define a_store_l a_store_l
static inline void a_store_l(volatile void *p, long x)
{
    *(long*)p = x;
}

#define a_or_l a_or_l
static inline void a_or_l(volatile void *p, long v)
{
    *(long*)p |= v;
}

#define a_cas_p a_cas_p
static inline void *a_cas_p(volatile void *p, void *t, void *s)
{
    if (*(long*)p == t)
        *(long*)p = s;
    return t;
}

#define a_cas_l a_cas_l
static inline long a_cas_l(volatile void *p, long t, long s)
{
    if (*(long*)p == t)
        *(long*)p = s;
    return t;
}

#define a_cas a_cas
static inline int a_cas(volatile int *p, int t, int s)
{
    if (*p == t)
        *p = s;
    return t;
}

#define a_or a_or
static inline void a_or(volatile void *p, int v)
{
    *(int*)p |= v;
}

#define a_and a_and
static inline void a_and(volatile void *p, int v)
{
    *(int*)p &= v;
}

#define a_inc a_inc
static inline void a_inc(volatile int *x)
{
    ++*x;
}

#define a_dec a_dec
static inline void a_dec(volatile int *x)
{
    --*x;
}

#define a_store a_store
static inline void a_store(volatile int *p, int x)
{
    *p = x;
}

#define a_swap a_swap
static inline int a_swap(volatile int *x, int v)
{
    int old;
    do old = *x;
    while (!__sync_bool_compare_and_swap(x, old, v));
    return old;
}

#define a_fetch_add a_fetch_add
static inline int a_fetch_add(volatile int *x, int v)
{
  return __sync_fetch_and_add(x, v);
}

#define a_spin a_spin
static inline void a_spin()
{
}

#define a_crash a_crash
static inline void a_crash()
{
  abort();
}