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static OF_INLINE int32_t
OFAtomicInt32Add(volatile int32_t *_Nonnull p, int32_t i)
{
__asm__ __volatile__ (
"lock\n\t"
"xadd{l} { %0, %2 | %2, %0 }\n\t"
"add{l} { %1, %0 | %0, %1 }"
: "+&r"(i)
: "r"(i), "m"(*p)
: "+&r" (i)
: "r" (i),
"m" (*p)
);
return i;
}
static OF_INLINE int
OFAtomicIntAdd(volatile int *_Nonnull p, int i)
{
if (sizeof(int) == 4)
return OFAtomicInt32Add(p, i);
#ifdef OF_AMD64
else if (sizeof(int) == 8)
__asm__ __volatile__ (
"lock\n\t"
"xadd{q} { %0, %2 | %2, %0 }\n\t"
"add{q} { %1, %0 | %0, %1 }"
: "+&r"(i)
: "r"(i), "m"(*p)
: "+&r" (i)
: "r" (i),
"m" (*p)
);
#endif
else
abort();
return i;
}
static OF_INLINE void *_Nullable
OFAtomicPointerAdd(void *volatile _Nullable *_Nonnull p, intptr_t i)
{
#if defined(OF_AMD64)
__asm__ __volatile__ (
"lock\n\t"
"xadd{q} { %0, %2 | %2, %0 }\n\t"
"add{q} { %1, %0 | %0, %1 }"
: "+&r"(i)
: "r"(i), "m"(*p)
: "+&r" (i)
: "r" (i),
"m" (*p)
);
return (void *)i;
#elif defined(OF_X86)
__asm__ __volatile__ (
"lock\n\t"
"xadd{l} { %0, %2 | %2, %0 }\n\t"
"add{l} { %1, %0 | %0, %1 }"
: "+&r"(i)
: "r"(i), "m"(*p)
: "+&r" (i)
: "r" (i),
"m" (*p)
);
return (void *)i;
#endif
}
static OF_INLINE int32_t
OFAtomicInt32Subtract(volatile int32_t *_Nonnull p, int32_t i)
{
__asm__ __volatile__ (
"neg{l} %0\n\t"
"lock\n\t"
"xadd{l} { %0, %2 | %2, %0 }\n\t"
"sub{l} { %1, %0 | %0, %1 }"
: "+&r"(i)
: "r"(i), "m"(*p)
: "+&r" (i)
: "r" (i),
"m" (*p)
);
return i;
}
static OF_INLINE int
OFAtomicIntSubtract(volatile int *_Nonnull p, int i)
{
if (sizeof(int) == 4)
return OFAtomicInt32Subtract(p, i);
#ifdef OF_AMD64
else if (sizeof(int) == 8)
__asm__ __volatile__ (
"neg{q} %0\n\t"
"lock\n\t"
"xadd{q} { %0, %2 | %2, %0 }\n\t"
"sub{q} { %1, %0 | %0, %1 }"
: "+&r"(i)
: "r"(i), "m"(*p)
: "+&r" (i)
: "r" (i),
"m" (*p)
);
#endif
else
abort();
return i;
}
static OF_INLINE void *_Nullable
OFAtomicPointerSubtract(void *volatile _Nullable *_Nonnull p, intptr_t i)
{
#if defined(OF_AMD64)
__asm__ __volatile__ (
"neg{q} %0\n\t"
"lock\n\t"
"xadd{q} { %0, %2 | %2, %0 }\n\t"
"sub{q} { %1, %0 | %0, %1 }"
: "+&r"(i)
: "r"(i), "m"(*p)
: "+&r" (i)
: "r" (i),
"m" (*p)
);
return (void *)i;
#elif defined(OF_X86)
__asm__ __volatile__ (
"neg{l} %0\n\t"
"lock\n\t"
"xadd{l} { %0, %2 | %2, %0 }\n\t"
"sub{l} { %1, %0 | %0, %1 }"
: "+&r"(i)
: "r"(i), "m"(*p)
: "+&r" (i)
: "r" (i),
"m" (*p)
);
return (void *)i;
#endif
}
static OF_INLINE int32_t
OFAtomicInt32Increase(volatile int32_t *_Nonnull p)
{
int32_t i;
__asm__ __volatile__ (
"xor{l} %0, %0\n\t"
"inc{l} %0\n\t"
"lock\n\t"
"xadd{l} { %0, %1 | %1, %0 }\n\t"
"inc{l} %0"
: "=&r"(i)
: "m"(*p)
: "=&r" (i)
: "m" (*p)
);
return i;
}
static OF_INLINE int
OFAtomicIntIncrease(volatile int *_Nonnull p)
{
int i;
if (sizeof(int) == 4)
return OFAtomicInt32Increase(p);
#ifdef OF_AMD64
else if (sizeof(int) == 8)
__asm__ __volatile__ (
"xor{q} %0, %0\n\t"
"inc{q} %0\n\t"
"lock\n\t"
"xadd{q} { %0, %1 | %1, %0 }\n\t"
"inc{q} %0"
: "=&r"(i)
: "m"(*p)
: "=&r" (i)
: "m" (*p)
);
#endif
else
abort();
return i;
}
static OF_INLINE int32_t
OFAtomicInt32Decrease(volatile int32_t *_Nonnull p)
{
int32_t i;
__asm__ __volatile__ (
"xor{l} %0, %0\n\t"
"dec{l} %0\n\t"
"lock\n\t"
"xadd{l} { %0, %1 | %1, %0 }\n\t"
"dec{l} %0"
: "=&r"(i)
: "m"(*p)
: "=&r" (i)
: "m" (*p)
);
return i;
}
static OF_INLINE int
OFAtomicIntDecrease(volatile int *_Nonnull p)
{
int i;
if (sizeof(int) == 4)
return OFAtomicInt32Decrease(p);
#ifdef OF_AMD64
else if (sizeof(int) == 8)
__asm__ __volatile__ (
"xor{q} %0, %0\n\t"
"dec{q} %0\n\t"
"lock\n\t"
"xadd{q} { %0, %1 | %1, %0 }\n\t"
"dec{q} %0"
: "=&r"(i)
: "m"(*p)
: "=&r" (i)
: "m" (*p)
);
#endif
else
abort();
return i;
}
static OF_INLINE uint32_t
OFAtomicInt32Or(volatile uint32_t *_Nonnull p, uint32_t i)
{
__asm__ __volatile__ (
"0:\n\t"
"mov{l} { %2, %0 | %0, %2 }\n\t"
"mov{l} { %0, %%eax | eax, %0 }\n\t"
"or{l} { %1, %0 | %0, %1 }\n\t"
"lock\n\t"
"cmpxchg{l} { %0, %2 | %2, %0 }\n\t"
"jne 0b"
: "=&r"(i)
: "r"(i), "m"(*p)
: "=&r" (i)
: "r" (i),
"m" (*p)
: "eax", "cc"
);
return i;
}
static OF_INLINE unsigned int
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"0:\n\t"
"mov{q} { %2, %0 | %0, %2 }\n\t"
"mov{q} { %0, %%rax | rax, %0 }\n\t"
"or{q} { %1, %0 | %0, %1 }\n\t"
"lock\n\t"
"cmpxchg{q} { %0, %2 | %2, %0 }\n\t"
"jne 0b"
: "=&r"(i)
: "r"(i), "m"(*p)
: "=&r" (i)
: "r" (i),
"m" (*p)
: "rax", "cc"
);
#endif
else
abort();
return i;
}
static OF_INLINE uint32_t
OFAtomicInt32And(volatile uint32_t *_Nonnull p, uint32_t i)
{
__asm__ __volatile__ (
"0:\n\t"
"mov{l} { %2, %0 | %0, %2 }\n\t"
"mov{l} { %0, %%eax | eax, %0 }\n\t"
"and{l} { %1, %0 | %0, %1 }\n\t"
"lock\n\t"
"cmpxchg{l} { %0, %2 | %2, %0 }\n\t"
"jne 0b"
: "=&r"(i)
: "r"(i), "m"(*p)
: "=&r" (i)
: "r" (i),
"m" (*p)
: "eax", "cc"
);
return i;
}
static OF_INLINE unsigned int
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"0:\n\t"
"mov{q} { %2, %0 | %0, %2 }\n\t"
"mov{q} { %0, %%rax | rax, %0 }\n\t"
"and{q} { %1, %0 | %0, %1 }\n\t"
"lock\n\t"
"cmpxchg{q} { %0, %2 | %2, %0 }\n\t"
"jne 0b"
: "=&r"(i)
: "r"(i), "m"(*p)
: "=&r" (i)
: "r" (i),
"m" (*p)
: "rax", "cc"
);
#endif
else
abort();
return i;
}
static OF_INLINE uint32_t
OFAtomicInt32Xor(volatile uint32_t *_Nonnull p, uint32_t i)
{
__asm__ __volatile__ (
"0:\n\t"
"mov{l} { %2, %0 | %0, %2 }\n\t"
"mov{l} { %0, %%eax | eax, %0 }\n\t"
"xor{l} { %1, %0 | %0, %1 }\n\t"
"lock\n\t"
"cmpxchg{l} { %0, %2 | %2, %0 }\n\t"
"jne 0b"
: "=&r"(i)
: "r"(i), "m"(*p)
: "=&r" (i)
: "r" (i),
"m" (*p)
: "eax", "cc"
);
return i;
}
static OF_INLINE unsigned int
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"0:\n\t"
"mov{q} { %2, %0 | %0, %2 }\n\t"
"mov{q} { %0, %%rax | rax, %0 }\n\t"
"xor{q} { %1, %0 | %0, %1 }\n\t"
"lock\n\t"
"cmpxchg{q} { %0, %2 | %2, %0 }\n\t"
"jne 0b"
: "=&r"(i)
: "r"(i), "m"(*p)
: "=&r" (i)
: "r" (i),
"m" (*p)
: "rax", "cc"
);
#endif
else
abort();
return i;
}
static OF_INLINE bool
OFAtomicInt32CompareAndSwap(volatile int32_t *_Nonnull p, int32_t o, int32_t n)
{
int r;
__asm__ __volatile__ (
"lock\n\t"
"cmpxchg{l} { %2, %3 | %3, %2 }\n\t"
"sete %b0\n\t"
"movz{bl|x} { %b0, %0 | %0, %b0 }"
: "=&d"(r), "+a"(o) /* use d instead of r to avoid a gcc bug */
: "r"(n), "m"(*p)
: "=&d" (r), /* use d instead of r to avoid a gcc bug */
"+a" (o)
: "r" (n),
"m" (*p)
: "cc"
);
return r;
}
static OF_INLINE bool
OFAtomicIntCompareAndSwap(volatile int *_Nonnull p, int o, int n)
{
int r;
__asm__ __volatile__ (
"lock\n\t"
"cmpxchg { %2, %3 | %3, %2 }\n\t"
"sete %b0\n\t"
"movz{bl|x} { %b0, %0 | %0, %b0 }"
: "=&d"(r), "+a"(o) /* use d instead of r to avoid a gcc bug */
: "r"(n), "m"(*p)
: "=&d" (r), /* use d instead of r to avoid a gcc bug */
"+a" (o)
: "r" (n),
"m" (*p)
: "cc"
);
return r;
}
static OF_INLINE bool
OFAtomicPointerCompareAndSwap(void *volatile _Nullable *_Nonnull p,
void *_Nullable o, void *_Nullable n)
{
int r;
__asm__ __volatile__ (
"lock\n\t"
"cmpxchg { %2, %3 | %3, %2 }\n\t"
"sete %b0\n\t"
"movz{bl|x} { %b0, %0 | %0, %b0 }"
: "=&d"(r), "+a"(o) /* use d instead of r to avoid a gcc bug */
: "r"(n), "m"(*p)
: "=&d" (r), /* use d instead of r to avoid a gcc bug */
"+a" (o)
: "r" (n),
"m" (*p)
: "cc"
);
return r;
}
static OF_INLINE void
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