ObjFW  Diff

Annotate Patch Side-by-side Diff

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{
	__asm__ __volatile__ (
	    "0:\n\t"
	    "lwarx	%0, 0, %2\n\t"
	    "add	%0, %0, %1\n\t"
	    "stwcx.	%0, 0, %2\n\t"
	    "bne-	0b"
	    : "=&r"(i)
	    : "r"(i), "r"(p)
	    : "=&r" (i)
	    : "r" (i),
	      "r" (p)
	    : "cc", "memory"
	);

	return i;
}

static OF_INLINE int32_t
OFAtomicInt32Add(volatile int32_t *_Nonnull p, int32_t i)
{
	__asm__ __volatile__ (
	    "0:\n\t"
	    "lwarx	%0, 0, %2\n\t"
	    "add	%0, %0, %1\n\t"
	    "stwcx.	%0, 0, %2\n\t"
	    "bne-	0b"
	    : "=&r"(i)
	    : "r"(i), "r"(p)
	    : "=&r" (i)
	    : "r" (i),
	      "r" (p)
	    : "cc", "memory"
	);

	return i;
}

static OF_INLINE void *_Nullable
OFAtomicPointerAdd(void *volatile _Nullable *_Nonnull p, intptr_t i)
{
	__asm__ __volatile__ (
	    "0:\n\t"
	    "lwarx	%0, 0, %2\n\t"
	    "add	%0, %0, %1\n\t"
	    "stwcx.	%0, 0, %2\n\t"
	    "bne-	0b"
	    : "=&r"(i)
	    : "r"(i), "r"(p)
	    : "=&r" (i)
	    : "r" (i),
	      "r" (p)
	    : "cc", "memory"
	);

	return (void *)i;
}

static OF_INLINE int
OFAtomicIntSubtract(volatile int *_Nonnull p, int i)
{
	__asm__ __volatile__ (
	    "0:\n\t"
	    "lwarx	%0, 0, %2\n\t"
	    "sub	%0, %0, %1\n\t"
	    "stwcx.	%0, 0, %2\n\t"
	    "bne-	0b"
	    : "=&r"(i)
	    : "r"(i), "r"(p)
	    : "=&r" (i)
	    : "r" (i),
	      "r" (p)
	    : "cc", "memory"
	);

	return i;
}

static OF_INLINE int32_t
OFAtomicInt32Subtract(volatile int32_t *_Nonnull p, int32_t i)
{
	__asm__ __volatile__ (
	    "0:\n\t"
	    "lwarx	%0, 0, %2\n\t"
	    "sub	%0, %0, %1\n\t"
	    "stwcx.	%0, 0, %2\n\t"
	    "bne-	0b"
	    : "=&r"(i)
	    : "r"(i), "r"(p)
	    : "=&r" (i)
	    : "r" (i),
	      "r" (p)
	    : "cc", "memory"
	);

	return i;
}

static OF_INLINE void *_Nullable
OFAtomicPointerSubtract(void *volatile _Nullable *_Nonnull p, intptr_t i)
{
	__asm__ __volatile__ (
	    "0:\n\t"
	    "lwarx	%0, 0, %2\n\t"
	    "sub	%0, %0, %1\n\t"
	    "stwcx.	%0, 0, %2\n\t"
	    "bne-	0b"
	    : "=&r"(i)
	    : "r"(i), "r"(p)
	    : "=&r" (i)
	    : "r" (i),
	      "r" (p)
	    : "cc", "memory"
	);

	return (void *)i;
}

static OF_INLINE int
OFAtomicIntIncrease(volatile int *_Nonnull p)
{
	int i;

	__asm__ __volatile__ (
	    "0:\n\t"
	    "lwarx	%0, 0, %1\n\t"
	    "addi	%0, %0, 1\n\t"
	    "stwcx.	%0, 0, %1\n\t"
	    "bne-	0b"
	    : "=&r"(i)
	    : "r"(p)
	    : "=&r" (i)
	    : "r" (p)
	    : "cc", "memory"
	);

	return i;
}

static OF_INLINE int32_t
OFAtomicInt32Increase(volatile int32_t *_Nonnull p)
{
	int32_t i;

	__asm__ __volatile__ (
	    "0:\n\t"
	    "lwarx	%0, 0, %1\n\t"
	    "addi	%0, %0, 1\n\t"
	    "stwcx.	%0, 0, %1\n\t"
	    "bne-	0b"
	    : "=&r"(i)
	    : "r"(p)
	    : "=&r" (i)
	    : "r" (p)
	    : "cc", "memory"
	);

	return i;
}

static OF_INLINE int
OFAtomicIntDecrease(volatile int *_Nonnull p)
{
	int i;

	__asm__ __volatile__ (
	    "0:\n\t"
	    "lwarx	%0, 0, %1\n\t"
	    "subi	%0, %0, 1\n\t"
	    "stwcx.	%0, 0, %1\n\t"
	    "bne-	0b"
	    : "=&r"(i)
	    : "r"(p)
	    : "=&r" (i)
	    : "r" (p)
	    : "cc", "memory"
	);

	return i;
}

static OF_INLINE int32_t
OFAtomicInt32Decrease(volatile int32_t *_Nonnull p)
{
	int32_t i;

	__asm__ __volatile__ (
	    "0:\n\t"
	    "lwarx	%0, 0, %1\n\t"
	    "subi	%0, %0, 1\n\t"
	    "stwcx.	%0, 0, %1\n\t"
	    "bne-	0b"
	    : "=&r"(i)
	    : "r"(p)
	    : "=&r" (i)
	    : "r" (p)
	    : "cc", "memory"
	);

	return i;
}

static OF_INLINE unsigned int
OFAtomicIntOr(volatile unsigned int *_Nonnull p, unsigned int i)
{
	__asm__ __volatile__ (
	    "0:\n\t"
	    "lwarx	%0, 0, %2\n\t"
	    "or		%0, %0, %1\n\t"
	    "stwcx.	%0, 0, %2\n\t"
	    "bne-	0b"
	    : "=&r"(i)
	    : "r"(i), "r"(p)
	    : "=&r" (i)
	    : "r" (i),
	      "r" (p)
	    : "cc", "memory"
	);

	return i;
}

static OF_INLINE uint32_t
OFAtomicInt32Or(volatile uint32_t *_Nonnull p, uint32_t i)
{
	__asm__ __volatile__ (
	    "0:\n\t"
	    "lwarx	%0, 0, %2\n\t"
	    "or		%0, %0, %1\n\t"
	    "stwcx.	%0, 0, %2\n\t"
	    "bne-	0b"
	    : "=&r"(i)
	    : "r"(i), "r"(p)
	    : "=&r" (i)
	    : "r" (i),
	      "r" (p)
	    : "cc", "memory"
	);

	return i;
}

static OF_INLINE unsigned int
OFAtomicIntAnd(volatile unsigned int *_Nonnull p, unsigned int i)
{
	__asm__ __volatile__ (
	    "0:\n\t"
	    "lwarx	%0, 0, %2\n\t"
	    "and	%0, %0, %1\n\t"
	    "stwcx.	%0, 0, %2\n\t"
	    "bne-	0b"
	    : "=&r"(i)
	    : "r"(i), "r"(p)
	    : "=&r" (i)
	    : "r" (i),
	      "r" (p)
	    : "cc", "memory"
	);

	return i;
}

static OF_INLINE uint32_t
OFAtomicInt32And(volatile uint32_t *_Nonnull p, uint32_t i)
{
	__asm__ __volatile__ (
	    "0:\n\t"
	    "lwarx	%0, 0, %2\n\t"
	    "and	%0, %0, %1\n\t"
	    "stwcx.	%0, 0, %2\n\t"
	    "bne-	0b"
	    : "=&r"(i)
	    : "r"(i), "r"(p)
	    : "=&r" (i)
	    : "r" (i),
	      "r" (p)
	    : "cc", "memory"
	);

	return i;
}

static OF_INLINE unsigned int
OFAtomicIntXor(volatile unsigned int *_Nonnull p, unsigned int i)
{
	__asm__ __volatile__ (
	    "0:\n\t"
	    "lwarx	%0, 0, %2\n\t"
	    "xor	%0, %0, %1\n\t"
	    "stwcx.	%0, 0, %2\n\t"
	    "bne-	0b"
	    : "=&r"(i)
	    : "r"(i), "r"(p)
	    : "=&r" (i)
	    : "r" (i),
	      "r" (p)
	    : "cc", "memory"
	);

	return i;
}

static OF_INLINE uint32_t
OFAtomicInt32Xor(volatile uint32_t *_Nonnull p, uint32_t i)
{
	__asm__ __volatile__ (
	    "0:\n\t"
	    "lwarx	%0, 0, %2\n\t"
	    "xor	%0, %0, %1\n\t"
	    "stwcx.	%0, 0, %2\n\t"
	    "bne-	0b"
	    : "=&r"(i)
	    : "r"(i), "r"(p)
	    : "=&r" (i)
	    : "r" (i),
	      "r" (p)
	    : "cc", "memory"
	);

	return i;
}

static OF_INLINE bool
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	    "bne-	0b\n\t"
	    "li		%0, 1\n\t"
	    "b		2f\n\t"
	    "1:\n\t"
	    "stwcx.	%0, 0, %3\n\t"
	    "li		%0, 0\n\t"
	    "2:"
	    : "=&r"(r)
	    : "r"(o), "r"(n), "r"(p)
	    : "=&r" (r)
	    : "r" (o),
	      "r" (n),
	      "r" (p)
	    : "cc", "memory"
	);

	return r;
}

static OF_INLINE bool
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	    "bne-	0b\n\t"
	    "li		%0, 1\n\t"
	    "b		2f\n\t"
	    "1:\n\t"
	    "stwcx.	%0, 0, %3\n\t"
	    "li		%0, 0\n\t"
	    "2:"
	    : "=&r"(r)
	    : "r"(o), "r"(n), "r"(p)
	    : "=&r" (r)
	    : "r" (o),
	      "r" (n),
	      "r" (p)
	    : "cc", "memory"
	);

	return r;
}

static OF_INLINE bool
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	    "bne-	0b\n\t"
	    "li		%0, 1\n\t"
	    "b		2f\n\t"
	    "1:\n\t"
	    "stwcx.	%0, 0, %3\n\t"
	    "li		%0, 0\n\t"
	    "2:"
	    : "=&r"(r)
	    : "r"(o), "r"(n), "r"(p)
	    : "=&r" (r)
	    : "r" (o),
	      "r" (n),
	      "r" (p)
	    : "cc", "memory"
	);

	return r;
}

static OF_INLINE void
︙
Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
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